1 /*
2  * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
3  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4  * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/queue.h>
20 #include <sys/time.h>
21 #include <sys/types.h>
22 #include <sys/stat.h>
23 #include <sys/wait.h>
24 
25 #include <err.h>
26 #include <errno.h>
27 #include <fcntl.h>
28 #include <limits.h>
29 #include <locale.h>
30 #include <ctype.h>
31 #include <sha1.h>
32 #include <sha2.h>
33 #include <signal.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <unistd.h>
38 #include <libgen.h>
39 #include <time.h>
40 #include <paths.h>
41 #include <regex.h>
42 #include <getopt.h>
43 #include <util.h>
44 
45 #include "got_version.h"
46 #include "got_error.h"
47 #include "got_object.h"
48 #include "got_reference.h"
49 #include "got_repository.h"
50 #include "got_path.h"
51 #include "got_cancel.h"
52 #include "got_worktree.h"
53 #include "got_diff.h"
54 #include "got_commit_graph.h"
55 #include "got_fetch.h"
56 #include "got_send.h"
57 #include "got_blame.h"
58 #include "got_privsep.h"
59 #include "got_opentemp.h"
60 #include "got_gotconfig.h"
61 #include "got_dial.h"
62 #include "got_patch.h"
63 #include "got_sigs.h"
64 #include "got_date.h"
65 #include "got_keyword.h"
66 
67 #ifndef nitems
68 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
69 #endif
70 
71 #ifndef GOT_DEFAULT_EDITOR
72 #define GOT_DEFAULT_EDITOR "/usr/bin/vi"
73 #endif
74 
75 static volatile sig_atomic_t sigint_received;
76 static volatile sig_atomic_t sigpipe_received;
77 
78 static void
79 catch_sigint(int signo)
80 {
81 	sigint_received = 1;
82 }
83 
84 static void
85 catch_sigpipe(int signo)
86 {
87 	sigpipe_received = 1;
88 }
89 
90 
91 struct got_cmd {
92 	const char	*cmd_name;
93 	const struct got_error *(*cmd_main)(int, char *[]);
94 	void		(*cmd_usage)(void);
95 	const char	*cmd_alias;
96 };
97 
98 __dead static void	usage(int, int);
99 __dead static void	usage_import(void);
100 __dead static void	usage_clone(void);
101 __dead static void	usage_fetch(void);
102 __dead static void	usage_checkout(void);
103 __dead static void	usage_update(void);
104 __dead static void	usage_log(void);
105 __dead static void	usage_diff(void);
106 __dead static void	usage_blame(void);
107 __dead static void	usage_tree(void);
108 __dead static void	usage_status(void);
109 __dead static void	usage_ref(void);
110 __dead static void	usage_branch(void);
111 __dead static void	usage_tag(void);
112 __dead static void	usage_add(void);
113 __dead static void	usage_remove(void);
114 __dead static void	usage_patch(void);
115 __dead static void	usage_revert(void);
116 __dead static void	usage_commit(void);
117 __dead static void	usage_send(void);
118 __dead static void	usage_cherrypick(void);
119 __dead static void	usage_backout(void);
120 __dead static void	usage_rebase(void);
121 __dead static void	usage_histedit(void);
122 __dead static void	usage_integrate(void);
123 __dead static void	usage_merge(void);
124 __dead static void	usage_stage(void);
125 __dead static void	usage_unstage(void);
126 __dead static void	usage_cat(void);
127 __dead static void	usage_info(void);
128 
129 static const struct got_error*		cmd_import(int, char *[]);
130 static const struct got_error*		cmd_clone(int, char *[]);
131 static const struct got_error*		cmd_fetch(int, char *[]);
132 static const struct got_error*		cmd_checkout(int, char *[]);
133 static const struct got_error*		cmd_update(int, char *[]);
134 static const struct got_error*		cmd_log(int, char *[]);
135 static const struct got_error*		cmd_diff(int, char *[]);
136 static const struct got_error*		cmd_blame(int, char *[]);
137 static const struct got_error*		cmd_tree(int, char *[]);
138 static const struct got_error*		cmd_status(int, char *[]);
139 static const struct got_error*		cmd_ref(int, char *[]);
140 static const struct got_error*		cmd_branch(int, char *[]);
141 static const struct got_error*		cmd_tag(int, char *[]);
142 static const struct got_error*		cmd_add(int, char *[]);
143 static const struct got_error*		cmd_remove(int, char *[]);
144 static const struct got_error*		cmd_patch(int, char *[]);
145 static const struct got_error*		cmd_revert(int, char *[]);
146 static const struct got_error*		cmd_commit(int, char *[]);
147 static const struct got_error*		cmd_send(int, char *[]);
148 static const struct got_error*		cmd_cherrypick(int, char *[]);
149 static const struct got_error*		cmd_backout(int, char *[]);
150 static const struct got_error*		cmd_rebase(int, char *[]);
151 static const struct got_error*		cmd_histedit(int, char *[]);
152 static const struct got_error*		cmd_integrate(int, char *[]);
153 static const struct got_error*		cmd_merge(int, char *[]);
154 static const struct got_error*		cmd_stage(int, char *[]);
155 static const struct got_error*		cmd_unstage(int, char *[]);
156 static const struct got_error*		cmd_cat(int, char *[]);
157 static const struct got_error*		cmd_info(int, char *[]);
158 
159 static const struct got_cmd got_commands[] = {
160 	{ "import",	cmd_import,	usage_import,	"im" },
161 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
162 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
163 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
164 	{ "update",	cmd_update,	usage_update,	"up" },
165 	{ "log",	cmd_log,	usage_log,	"" },
166 	{ "diff",	cmd_diff,	usage_diff,	"di" },
167 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
168 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
169 	{ "status",	cmd_status,	usage_status,	"st" },
170 	{ "ref",	cmd_ref,	usage_ref,	"" },
171 	{ "branch",	cmd_branch,	usage_branch,	"br" },
172 	{ "tag",	cmd_tag,	usage_tag,	"" },
173 	{ "add",	cmd_add,	usage_add,	"" },
174 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
175 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
176 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
177 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
178 	{ "send",	cmd_send,	usage_send,	"se" },
179 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
180 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
181 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
182 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
183 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
184 	{ "merge",	cmd_merge,	usage_merge,	"mg" },
185 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
186 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
187 	{ "cat",	cmd_cat,	usage_cat,	"" },
188 	{ "info",	cmd_info,	usage_info,	"" },
189 };
190 
191 static void
192 list_commands(FILE *fp)
193 {
194 	size_t i;
195 
196 	fprintf(fp, "commands:");
197 	for (i = 0; i < nitems(got_commands); i++) {
198 		const struct got_cmd *cmd = &got_commands[i];
199 		fprintf(fp, " %s", cmd->cmd_name);
200 	}
201 	fputc('\n', fp);
202 }
203 
204 __dead static void
205 option_conflict(char a, char b)
206 {
207 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
208 }
209 
210 int
211 main(int argc, char *argv[])
212 {
213 	const struct got_cmd *cmd;
214 	size_t i;
215 	int ch;
216 	int hflag = 0, Vflag = 0;
217 	static const struct option longopts[] = {
218 	    { "version", no_argument, NULL, 'V' },
219 	    { NULL, 0, NULL, 0 }
220 	};
221 
222 	setlocale(LC_CTYPE, "");
223 
224 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
225 		switch (ch) {
226 		case 'h':
227 			hflag = 1;
228 			break;
229 		case 'V':
230 			Vflag = 1;
231 			break;
232 		default:
233 			usage(hflag, 1);
234 			/* NOTREACHED */
235 		}
236 	}
237 
238 	argc -= optind;
239 	argv += optind;
240 	optind = 1;
241 	optreset = 1;
242 
243 	if (Vflag) {
244 		got_version_print_str();
245 		return 0;
246 	}
247 
248 	if (argc <= 0)
249 		usage(hflag, hflag ? 0 : 1);
250 
251 	signal(SIGINT, catch_sigint);
252 	signal(SIGPIPE, catch_sigpipe);
253 
254 	for (i = 0; i < nitems(got_commands); i++) {
255 		const struct got_error *error;
256 
257 		cmd = &got_commands[i];
258 
259 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
260 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
261 			continue;
262 
263 		if (hflag)
264 			cmd->cmd_usage();
265 
266 		error = cmd->cmd_main(argc, argv);
267 		if (error && error->code != GOT_ERR_CANCELLED &&
268 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
269 		    !(sigpipe_received &&
270 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
271 		    !(sigint_received &&
272 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
273 			fflush(stdout);
274 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
275 			return 1;
276 		}
277 
278 		return 0;
279 	}
280 
281 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
282 	list_commands(stderr);
283 	return 1;
284 }
285 
286 __dead static void
287 usage(int hflag, int status)
288 {
289 	FILE *fp = (status == 0) ? stdout : stderr;
290 
291 	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
292 	    getprogname());
293 	if (hflag)
294 		list_commands(fp);
295 	exit(status);
296 }
297 
298 static const struct got_error *
299 get_editor(char **abspath)
300 {
301 	const struct got_error *err = NULL;
302 	const char *editor;
303 
304 	*abspath = NULL;
305 
306 	editor = getenv("VISUAL");
307 	if (editor == NULL)
308 		editor = getenv("EDITOR");
309 
310 	if (editor) {
311 		err = got_path_find_prog(abspath, editor);
312 		if (err)
313 			return err;
314 	}
315 
316 	if (*abspath == NULL) {
317 		*abspath = strdup(GOT_DEFAULT_EDITOR);
318 		if (*abspath == NULL)
319 			return got_error_from_errno("strdup");
320 	}
321 
322 	return NULL;
323 }
324 
325 static const struct got_error *
326 apply_unveil(const char *repo_path, int repo_read_only,
327     const char *worktree_path)
328 {
329 	const struct got_error *err;
330 
331 #ifdef PROFILE
332 	if (unveil("gmon.out", "rwc") != 0)
333 		return got_error_from_errno2("unveil", "gmon.out");
334 #endif
335 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
336 		return got_error_from_errno2("unveil", repo_path);
337 
338 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
339 		return got_error_from_errno2("unveil", worktree_path);
340 
341 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
342 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
343 
344 	err = got_privsep_unveil_exec_helpers();
345 	if (err != NULL)
346 		return err;
347 
348 	if (unveil(NULL, NULL) != 0)
349 		return got_error_from_errno("unveil");
350 
351 	return NULL;
352 }
353 
354 __dead static void
355 usage_import(void)
356 {
357 	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
358 	    "[-r repository-path] directory\n", getprogname());
359 	exit(1);
360 }
361 
362 static int
363 spawn_editor(const char *editor, const char *file)
364 {
365 	pid_t pid;
366 	sig_t sighup, sigint, sigquit;
367 	int st = -1;
368 
369 	sighup = signal(SIGHUP, SIG_IGN);
370 	sigint = signal(SIGINT, SIG_IGN);
371 	sigquit = signal(SIGQUIT, SIG_IGN);
372 
373 	switch (pid = fork()) {
374 	case -1:
375 		goto doneediting;
376 	case 0:
377 		execl(editor, editor, file, (char *)NULL);
378 		_exit(127);
379 	}
380 
381 	while (waitpid(pid, &st, 0) == -1)
382 		if (errno != EINTR)
383 			break;
384 
385 doneediting:
386 	(void)signal(SIGHUP, sighup);
387 	(void)signal(SIGINT, sigint);
388 	(void)signal(SIGQUIT, sigquit);
389 
390 	if (!WIFEXITED(st)) {
391 		errno = EINTR;
392 		return -1;
393 	}
394 
395 	return WEXITSTATUS(st);
396 }
397 
398 static const struct got_error *
399 read_logmsg(char **logmsg, size_t *len, FILE *fp, size_t filesize)
400 {
401 	const struct got_error *err = NULL;
402 	char *line = NULL;
403 	size_t linesize = 0;
404 
405 	*logmsg = NULL;
406 	*len = 0;
407 
408 	if (fseeko(fp, 0L, SEEK_SET) == -1)
409 		return got_error_from_errno("fseeko");
410 
411 	*logmsg = malloc(filesize + 1);
412 	if (*logmsg == NULL)
413 		return got_error_from_errno("malloc");
414 	(*logmsg)[0] = '\0';
415 
416 	while (getline(&line, &linesize, fp) != -1) {
417 		if (line[0] == '#' || (*len == 0 && line[0] == '\n'))
418 			continue; /* remove comments and leading empty lines */
419 		*len = strlcat(*logmsg, line, filesize + 1);
420 		if (*len >= filesize + 1) {
421 			err = got_error(GOT_ERR_NO_SPACE);
422 			goto done;
423 		}
424 	}
425 	if (ferror(fp)) {
426 		err = got_ferror(fp, GOT_ERR_IO);
427 		goto done;
428 	}
429 
430 	while (*len > 0 && (*logmsg)[*len - 1] == '\n') {
431 		(*logmsg)[*len - 1] = '\0';
432 		(*len)--;
433 	}
434 done:
435 	free(line);
436 	if (err) {
437 		free(*logmsg);
438 		*logmsg = NULL;
439 		*len = 0;
440 	}
441 	return err;
442 }
443 
444 static const struct got_error *
445 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
446     const char *initial_content, size_t initial_content_len,
447     int require_modification)
448 {
449 	const struct got_error *err = NULL;
450 	struct stat st, st2;
451 	FILE *fp = NULL;
452 	size_t logmsg_len;
453 
454 	*logmsg = NULL;
455 
456 	if (stat(logmsg_path, &st) == -1)
457 		return got_error_from_errno2("stat", logmsg_path);
458 
459 	if (spawn_editor(editor, logmsg_path) == -1)
460 		return got_error_from_errno("failed spawning editor");
461 
462 	if (require_modification) {
463 		struct timespec timeout;
464 
465 		timeout.tv_sec = 0;
466 		timeout.tv_nsec = 1;
467 		nanosleep(&timeout,  NULL);
468 	}
469 
470 	if (stat(logmsg_path, &st2) == -1)
471 		return got_error_from_errno2("stat", logmsg_path);
472 
473 	if (require_modification && st.st_size == st2.st_size &&
474 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==))
475 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
476 		    "no changes made to commit message, aborting");
477 
478 	fp = fopen(logmsg_path, "re");
479 	if (fp == NULL) {
480 		err = got_error_from_errno("fopen");
481 		goto done;
482 	}
483 
484 	/* strip comments and leading/trailing newlines */
485 	err = read_logmsg(logmsg, &logmsg_len, fp, st2.st_size);
486 	if (err)
487 		goto done;
488 	if (logmsg_len == 0) {
489 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
490 		    "commit message cannot be empty, aborting");
491 		goto done;
492 	}
493 done:
494 	if (fp && fclose(fp) == EOF && err == NULL)
495 		err = got_error_from_errno("fclose");
496 	if (err) {
497 		free(*logmsg);
498 		*logmsg = NULL;
499 	}
500 	return err;
501 }
502 
503 static const struct got_error *
504 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
505     const char *path_dir, const char *branch_name)
506 {
507 	char *initial_content = NULL;
508 	const struct got_error *err = NULL;
509 	int initial_content_len;
510 	int fd = -1;
511 
512 	initial_content_len = asprintf(&initial_content,
513 	    "\n# %s to be imported to branch %s\n", path_dir,
514 	    branch_name);
515 	if (initial_content_len == -1)
516 		return got_error_from_errno("asprintf");
517 
518 	err = got_opentemp_named_fd(logmsg_path, &fd,
519 	    GOT_TMPDIR_STR "/got-importmsg", "");
520 	if (err)
521 		goto done;
522 
523 	if (write(fd, initial_content, initial_content_len) == -1) {
524 		err = got_error_from_errno2("write", *logmsg_path);
525 		goto done;
526 	}
527 	if (close(fd) == -1) {
528 		err = got_error_from_errno2("close", *logmsg_path);
529 		goto done;
530 	}
531 	fd = -1;
532 
533 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
534 	    initial_content_len, 1);
535 done:
536 	if (fd != -1 && close(fd) == -1 && err == NULL)
537 		err = got_error_from_errno2("close", *logmsg_path);
538 	free(initial_content);
539 	if (err) {
540 		free(*logmsg_path);
541 		*logmsg_path = NULL;
542 	}
543 	return err;
544 }
545 
546 static const struct got_error *
547 import_progress(void *arg, const char *path)
548 {
549 	printf("A  %s\n", path);
550 	return NULL;
551 }
552 
553 static const struct got_error *
554 valid_author(const char *author)
555 {
556 	const char *email = author;
557 
558 	/*
559 	 * Git' expects the author (or committer) to be in the form
560 	 * "name <email>", which are mostly free form (see the
561 	 * "committer" description in git-fast-import(1)).  We're only
562 	 * doing this to avoid git's object parser breaking on commits
563 	 * we create.
564 	 */
565 
566 	while (*author && *author != '\n' && *author != '<' && *author != '>')
567 		author++;
568 	if (author != email && *author == '<' && *(author - 1) != ' ')
569 		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
570 		    "between author name and email required", email);
571 	if (*author++ != '<')
572 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
573 	while (*author && *author != '\n' && *author != '<' && *author != '>')
574 		author++;
575 	if (strcmp(author, ">") != 0)
576 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
577 	return NULL;
578 }
579 
580 static const struct got_error *
581 get_author(char **author, struct got_repository *repo,
582     struct got_worktree *worktree)
583 {
584 	const struct got_error *err = NULL;
585 	const char *got_author = NULL, *name, *email;
586 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
587 
588 	*author = NULL;
589 
590 	if (worktree)
591 		worktree_conf = got_worktree_get_gotconfig(worktree);
592 	repo_conf = got_repo_get_gotconfig(repo);
593 
594 	/*
595 	 * Priority of potential author information sources, from most
596 	 * significant to least significant:
597 	 * 1) work tree's .got/got.conf file
598 	 * 2) repository's got.conf file
599 	 * 3) repository's git config file
600 	 * 4) environment variables
601 	 * 5) global git config files (in user's home directory or /etc)
602 	 */
603 
604 	if (worktree_conf)
605 		got_author = got_gotconfig_get_author(worktree_conf);
606 	if (got_author == NULL)
607 		got_author = got_gotconfig_get_author(repo_conf);
608 	if (got_author == NULL) {
609 		name = got_repo_get_gitconfig_author_name(repo);
610 		email = got_repo_get_gitconfig_author_email(repo);
611 		if (name && email) {
612 			if (asprintf(author, "%s <%s>", name, email) == -1)
613 				return got_error_from_errno("asprintf");
614 			return NULL;
615 		}
616 
617 		got_author = getenv("GOT_AUTHOR");
618 		if (got_author == NULL) {
619 			name = got_repo_get_global_gitconfig_author_name(repo);
620 			email = got_repo_get_global_gitconfig_author_email(
621 			    repo);
622 			if (name && email) {
623 				if (asprintf(author, "%s <%s>", name, email)
624 				    == -1)
625 					return got_error_from_errno("asprintf");
626 				return NULL;
627 			}
628 			/* TODO: Look up user in password database? */
629 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
630 		}
631 	}
632 
633 	*author = strdup(got_author);
634 	if (*author == NULL)
635 		return got_error_from_errno("strdup");
636 
637 	err = valid_author(*author);
638 	if (err) {
639 		free(*author);
640 		*author = NULL;
641 	}
642 	return err;
643 }
644 
645 static const struct got_error *
646 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
647     struct got_worktree *worktree)
648 {
649 	const char *got_allowed_signers = NULL;
650 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
651 
652 	*allowed_signers = NULL;
653 
654 	if (worktree)
655 		worktree_conf = got_worktree_get_gotconfig(worktree);
656 	repo_conf = got_repo_get_gotconfig(repo);
657 
658 	/*
659 	 * Priority of potential author information sources, from most
660 	 * significant to least significant:
661 	 * 1) work tree's .got/got.conf file
662 	 * 2) repository's got.conf file
663 	 */
664 
665 	if (worktree_conf)
666 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
667 		    worktree_conf);
668 	if (got_allowed_signers == NULL)
669 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
670 		    repo_conf);
671 
672 	if (got_allowed_signers) {
673 		*allowed_signers = strdup(got_allowed_signers);
674 		if (*allowed_signers == NULL)
675 			return got_error_from_errno("strdup");
676 	}
677 	return NULL;
678 }
679 
680 static const struct got_error *
681 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
682     struct got_worktree *worktree)
683 {
684 	const char *got_revoked_signers = NULL;
685 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
686 
687 	*revoked_signers = NULL;
688 
689 	if (worktree)
690 		worktree_conf = got_worktree_get_gotconfig(worktree);
691 	repo_conf = got_repo_get_gotconfig(repo);
692 
693 	/*
694 	 * Priority of potential author information sources, from most
695 	 * significant to least significant:
696 	 * 1) work tree's .got/got.conf file
697 	 * 2) repository's got.conf file
698 	 */
699 
700 	if (worktree_conf)
701 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
702 		    worktree_conf);
703 	if (got_revoked_signers == NULL)
704 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
705 		    repo_conf);
706 
707 	if (got_revoked_signers) {
708 		*revoked_signers = strdup(got_revoked_signers);
709 		if (*revoked_signers == NULL)
710 			return got_error_from_errno("strdup");
711 	}
712 	return NULL;
713 }
714 
715 static const char *
716 get_signer_id(struct got_repository *repo, struct got_worktree *worktree)
717 {
718 	const char *got_signer_id = NULL;
719 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
720 
721 	if (worktree)
722 		worktree_conf = got_worktree_get_gotconfig(worktree);
723 	repo_conf = got_repo_get_gotconfig(repo);
724 
725 	/*
726 	 * Priority of potential author information sources, from most
727 	 * significant to least significant:
728 	 * 1) work tree's .got/got.conf file
729 	 * 2) repository's got.conf file
730 	 */
731 
732 	if (worktree_conf)
733 		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
734 	if (got_signer_id == NULL)
735 		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
736 
737 	return got_signer_id;
738 }
739 
740 static const struct got_error *
741 get_gitconfig_path(char **gitconfig_path)
742 {
743 	const char *homedir = getenv("HOME");
744 
745 	*gitconfig_path = NULL;
746 	if (homedir) {
747 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
748 			return got_error_from_errno("asprintf");
749 
750 	}
751 	return NULL;
752 }
753 
754 static const struct got_error *
755 cmd_import(int argc, char *argv[])
756 {
757 	const struct got_error *error = NULL;
758 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
759 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
760 	const char *branch_name = NULL;
761 	char *id_str = NULL, *logmsg_path = NULL;
762 	char refname[PATH_MAX] = "refs/heads/";
763 	struct got_repository *repo = NULL;
764 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
765 	struct got_object_id *new_commit_id = NULL;
766 	int ch, n = 0;
767 	struct got_pathlist_head ignores;
768 	struct got_pathlist_entry *pe;
769 	int preserve_logmsg = 0;
770 	int *pack_fds = NULL;
771 
772 	TAILQ_INIT(&ignores);
773 
774 #ifndef PROFILE
775 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
776 	    "unveil",
777 	    NULL) == -1)
778 		err(1, "pledge");
779 #endif
780 
781 	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
782 		switch (ch) {
783 		case 'b':
784 			branch_name = optarg;
785 			break;
786 		case 'I':
787 			if (optarg[0] == '\0')
788 				break;
789 			error = got_pathlist_insert(&pe, &ignores, optarg,
790 			    NULL);
791 			if (error)
792 				goto done;
793 			break;
794 		case 'm':
795 			logmsg = strdup(optarg);
796 			if (logmsg == NULL) {
797 				error = got_error_from_errno("strdup");
798 				goto done;
799 			}
800 			break;
801 		case 'r':
802 			repo_path = realpath(optarg, NULL);
803 			if (repo_path == NULL) {
804 				error = got_error_from_errno2("realpath",
805 				    optarg);
806 				goto done;
807 			}
808 			break;
809 		default:
810 			usage_import();
811 			/* NOTREACHED */
812 		}
813 	}
814 
815 	argc -= optind;
816 	argv += optind;
817 
818 	if (argc != 1)
819 		usage_import();
820 
821 	if (repo_path == NULL) {
822 		repo_path = getcwd(NULL, 0);
823 		if (repo_path == NULL)
824 			return got_error_from_errno("getcwd");
825 	}
826 	got_path_strip_trailing_slashes(repo_path);
827 	error = get_gitconfig_path(&gitconfig_path);
828 	if (error)
829 		goto done;
830 	error = got_repo_pack_fds_open(&pack_fds);
831 	if (error != NULL)
832 		goto done;
833 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
834 	if (error)
835 		goto done;
836 
837 	path_dir = realpath(argv[0], NULL);
838 	if (path_dir == NULL) {
839 		error = got_error_from_errno2("realpath", argv[0]);
840 		goto done;
841 	}
842 	got_path_strip_trailing_slashes(path_dir);
843 
844 	error = get_editor(&editor);
845 	if (error)
846 		goto done;
847 
848 	if (unveil(path_dir, "r") != 0) {
849 		error = got_error_from_errno2("unveil", path_dir);
850 		goto done;
851 	}
852 	if (unveil(editor, "x") != 0) {
853 		error = got_error_from_errno2("unveil", editor);
854 		goto done;
855 	}
856 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
857 	if (error)
858 		goto done;
859 
860 	error = get_author(&author, repo, NULL);
861 	if (error)
862 		return error;
863 
864 	/*
865 	 * Don't let the user create a branch name with a leading '-'.
866 	 * While technically a valid reference name, this case is usually
867 	 * an unintended typo.
868 	 */
869 	if (branch_name && branch_name[0] == '-')
870 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
871 
872 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
873 	if (error && error->code != GOT_ERR_NOT_REF)
874 		goto done;
875 
876 	if (branch_name)
877 		n = strlcat(refname, branch_name, sizeof(refname));
878 	else if (head_ref && got_ref_is_symbolic(head_ref))
879 		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
880 		    sizeof(refname));
881 	else
882 		n = strlcat(refname, "main", sizeof(refname));
883 	if (n >= sizeof(refname)) {
884 		error = got_error(GOT_ERR_NO_SPACE);
885 		goto done;
886 	}
887 
888 	error = got_ref_open(&branch_ref, repo, refname, 0);
889 	if (error) {
890 		if (error->code != GOT_ERR_NOT_REF)
891 			goto done;
892 	} else {
893 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
894 		    "import target branch already exists");
895 		goto done;
896 	}
897 
898 	if (logmsg == NULL || *logmsg == '\0') {
899 		free(logmsg);
900 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
901 		    path_dir, refname);
902 		if (error) {
903 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
904 			    logmsg_path != NULL)
905 				preserve_logmsg = 1;
906 			goto done;
907 		}
908 	}
909 
910 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
911 	    author, &ignores, repo, import_progress, NULL);
912 	if (error) {
913 		if (logmsg_path)
914 			preserve_logmsg = 1;
915 		goto done;
916 	}
917 
918 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
919 	if (error) {
920 		if (logmsg_path)
921 			preserve_logmsg = 1;
922 		goto done;
923 	}
924 
925 	error = got_ref_write(branch_ref, repo);
926 	if (error) {
927 		if (logmsg_path)
928 			preserve_logmsg = 1;
929 		goto done;
930 	}
931 
932 	error = got_object_id_str(&id_str, new_commit_id);
933 	if (error) {
934 		if (logmsg_path)
935 			preserve_logmsg = 1;
936 		goto done;
937 	}
938 
939 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
940 	if (error) {
941 		if (error->code != GOT_ERR_NOT_REF) {
942 			if (logmsg_path)
943 				preserve_logmsg = 1;
944 			goto done;
945 		}
946 
947 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
948 		    branch_ref);
949 		if (error) {
950 			if (logmsg_path)
951 				preserve_logmsg = 1;
952 			goto done;
953 		}
954 
955 		error = got_ref_write(head_ref, repo);
956 		if (error) {
957 			if (logmsg_path)
958 				preserve_logmsg = 1;
959 			goto done;
960 		}
961 	}
962 
963 	printf("Created branch %s with commit %s\n",
964 	    got_ref_get_name(branch_ref), id_str);
965 done:
966 	if (pack_fds) {
967 		const struct got_error *pack_err =
968 		    got_repo_pack_fds_close(pack_fds);
969 		if (error == NULL)
970 			error = pack_err;
971 	}
972 	if (repo) {
973 		const struct got_error *close_err = got_repo_close(repo);
974 		if (error == NULL)
975 			error = close_err;
976 	}
977 	if (preserve_logmsg) {
978 		fprintf(stderr, "%s: log message preserved in %s\n",
979 		    getprogname(), logmsg_path);
980 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
981 		error = got_error_from_errno2("unlink", logmsg_path);
982 	free(logmsg);
983 	free(logmsg_path);
984 	free(repo_path);
985 	free(editor);
986 	free(new_commit_id);
987 	free(id_str);
988 	free(author);
989 	free(gitconfig_path);
990 	if (branch_ref)
991 		got_ref_close(branch_ref);
992 	if (head_ref)
993 		got_ref_close(head_ref);
994 	return error;
995 }
996 
997 __dead static void
998 usage_clone(void)
999 {
1000 	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
1001 	    "repository-URL [directory]\n", getprogname());
1002 	exit(1);
1003 }
1004 
1005 struct got_fetch_progress_arg {
1006 	char last_scaled_size[FMT_SCALED_STRSIZE];
1007 	int last_p_indexed;
1008 	int last_p_resolved;
1009 	int verbosity;
1010 
1011 	struct got_repository *repo;
1012 
1013 	int create_configs;
1014 	int configs_created;
1015 	struct {
1016 		struct got_pathlist_head *symrefs;
1017 		struct got_pathlist_head *wanted_branches;
1018 		struct got_pathlist_head *wanted_refs;
1019 		const char *proto;
1020 		const char *host;
1021 		const char *port;
1022 		const char *remote_repo_path;
1023 		const char *git_url;
1024 		int fetch_all_branches;
1025 		int mirror_references;
1026 	} config_info;
1027 };
1028 
1029 /* XXX forward declaration */
1030 static const struct got_error *
1031 create_config_files(const char *proto, const char *host, const char *port,
1032     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1033     int mirror_references, struct got_pathlist_head *symrefs,
1034     struct got_pathlist_head *wanted_branches,
1035     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1036 
1037 static const struct got_error *
1038 fetch_progress(void *arg, const char *message, off_t packfile_size,
1039     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1040 {
1041 	const struct got_error *err = NULL;
1042 	struct got_fetch_progress_arg *a = arg;
1043 	char scaled_size[FMT_SCALED_STRSIZE];
1044 	int p_indexed, p_resolved;
1045 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1046 
1047 	/*
1048 	 * In order to allow a failed clone to be resumed with 'got fetch'
1049 	 * we try to create configuration files as soon as possible.
1050 	 * Once the server has sent information about its default branch
1051 	 * we have all required information.
1052 	 */
1053 	if (a->create_configs && !a->configs_created &&
1054 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1055 		err = create_config_files(a->config_info.proto,
1056 		    a->config_info.host, a->config_info.port,
1057 		    a->config_info.remote_repo_path,
1058 		    a->config_info.git_url,
1059 		    a->config_info.fetch_all_branches,
1060 		    a->config_info.mirror_references,
1061 		    a->config_info.symrefs,
1062 		    a->config_info.wanted_branches,
1063 		    a->config_info.wanted_refs, a->repo);
1064 		if (err)
1065 			return err;
1066 		a->configs_created = 1;
1067 	}
1068 
1069 	if (a->verbosity < 0)
1070 		return NULL;
1071 
1072 	if (message && message[0] != '\0') {
1073 		printf("\rserver: %s", message);
1074 		fflush(stdout);
1075 		return NULL;
1076 	}
1077 
1078 	if (packfile_size > 0 || nobj_indexed > 0) {
1079 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1080 		    (a->last_scaled_size[0] == '\0' ||
1081 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1082 			print_size = 1;
1083 			if (strlcpy(a->last_scaled_size, scaled_size,
1084 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1085 				return got_error(GOT_ERR_NO_SPACE);
1086 		}
1087 		if (nobj_indexed > 0) {
1088 			p_indexed = (nobj_indexed * 100) / nobj_total;
1089 			if (p_indexed != a->last_p_indexed) {
1090 				a->last_p_indexed = p_indexed;
1091 				print_indexed = 1;
1092 				print_size = 1;
1093 			}
1094 		}
1095 		if (nobj_resolved > 0) {
1096 			p_resolved = (nobj_resolved * 100) /
1097 			    (nobj_total - nobj_loose);
1098 			if (p_resolved != a->last_p_resolved) {
1099 				a->last_p_resolved = p_resolved;
1100 				print_resolved = 1;
1101 				print_indexed = 1;
1102 				print_size = 1;
1103 			}
1104 		}
1105 
1106 	}
1107 	if (print_size || print_indexed || print_resolved)
1108 		printf("\r");
1109 	if (print_size)
1110 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1111 	if (print_indexed)
1112 		printf("; indexing %d%%", p_indexed);
1113 	if (print_resolved)
1114 		printf("; resolving deltas %d%%", p_resolved);
1115 	if (print_size || print_indexed || print_resolved)
1116 		fflush(stdout);
1117 
1118 	return NULL;
1119 }
1120 
1121 static const struct got_error *
1122 create_symref(const char *refname, struct got_reference *target_ref,
1123     int verbosity, struct got_repository *repo)
1124 {
1125 	const struct got_error *err;
1126 	struct got_reference *head_symref;
1127 
1128 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1129 	if (err)
1130 		return err;
1131 
1132 	err = got_ref_write(head_symref, repo);
1133 	if (err == NULL && verbosity > 0) {
1134 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1135 		    got_ref_get_name(target_ref));
1136 	}
1137 	got_ref_close(head_symref);
1138 	return err;
1139 }
1140 
1141 static const struct got_error *
1142 list_remote_refs(struct got_pathlist_head *symrefs,
1143     struct got_pathlist_head *refs)
1144 {
1145 	const struct got_error *err;
1146 	struct got_pathlist_entry *pe;
1147 
1148 	TAILQ_FOREACH(pe, symrefs, entry) {
1149 		const char *refname = pe->path;
1150 		const char *targetref = pe->data;
1151 
1152 		printf("%s: %s\n", refname, targetref);
1153 	}
1154 
1155 	TAILQ_FOREACH(pe, refs, entry) {
1156 		const char *refname = pe->path;
1157 		struct got_object_id *id = pe->data;
1158 		char *id_str;
1159 
1160 		err = got_object_id_str(&id_str, id);
1161 		if (err)
1162 			return err;
1163 		printf("%s: %s\n", refname, id_str);
1164 		free(id_str);
1165 	}
1166 
1167 	return NULL;
1168 }
1169 
1170 static const struct got_error *
1171 create_ref(const char *refname, struct got_object_id *id,
1172     int verbosity, struct got_repository *repo)
1173 {
1174 	const struct got_error *err = NULL;
1175 	struct got_reference *ref;
1176 	char *id_str;
1177 
1178 	err = got_object_id_str(&id_str, id);
1179 	if (err)
1180 		return err;
1181 
1182 	err = got_ref_alloc(&ref, refname, id);
1183 	if (err)
1184 		goto done;
1185 
1186 	err = got_ref_write(ref, repo);
1187 	got_ref_close(ref);
1188 
1189 	if (err == NULL && verbosity >= 0)
1190 		printf("Created reference %s: %s\n", refname, id_str);
1191 done:
1192 	free(id_str);
1193 	return err;
1194 }
1195 
1196 static int
1197 match_wanted_ref(const char *refname, const char *wanted_ref)
1198 {
1199 	if (strncmp(refname, "refs/", 5) != 0)
1200 		return 0;
1201 	refname += 5;
1202 
1203 	/*
1204 	 * Prevent fetching of references that won't make any
1205 	 * sense outside of the remote repository's context.
1206 	 */
1207 	if (strncmp(refname, "got/", 4) == 0)
1208 		return 0;
1209 	if (strncmp(refname, "remotes/", 8) == 0)
1210 		return 0;
1211 
1212 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1213 		wanted_ref += 5;
1214 
1215 	/* Allow prefix match. */
1216 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1217 		return 1;
1218 
1219 	/* Allow exact match. */
1220 	return (strcmp(refname, wanted_ref) == 0);
1221 }
1222 
1223 static int
1224 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1225 {
1226 	struct got_pathlist_entry *pe;
1227 
1228 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1229 		if (match_wanted_ref(refname, pe->path))
1230 			return 1;
1231 	}
1232 
1233 	return 0;
1234 }
1235 
1236 static const struct got_error *
1237 create_wanted_ref(const char *refname, struct got_object_id *id,
1238     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1239 {
1240 	const struct got_error *err;
1241 	char *remote_refname;
1242 
1243 	if (strncmp("refs/", refname, 5) == 0)
1244 		refname += 5;
1245 
1246 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1247 	    remote_repo_name, refname) == -1)
1248 		return got_error_from_errno("asprintf");
1249 
1250 	err = create_ref(remote_refname, id, verbosity, repo);
1251 	free(remote_refname);
1252 	return err;
1253 }
1254 
1255 static const struct got_error *
1256 create_gotconfig(const char *proto, const char *host, const char *port,
1257     const char *remote_repo_path, const char *default_branch,
1258     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1259     struct got_pathlist_head *wanted_refs, int mirror_references,
1260     struct got_repository *repo)
1261 {
1262 	const struct got_error *err = NULL;
1263 	char *gotconfig_path = NULL;
1264 	char *gotconfig = NULL;
1265 	FILE *gotconfig_file = NULL;
1266 	const char *branchname = NULL;
1267 	char *branches = NULL, *refs = NULL;
1268 	ssize_t n;
1269 
1270 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1271 		struct got_pathlist_entry *pe;
1272 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1273 			char *s;
1274 			branchname = pe->path;
1275 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1276 				branchname += 11;
1277 			if (asprintf(&s, "%s\"%s\" ",
1278 			    branches ? branches : "", branchname) == -1) {
1279 				err = got_error_from_errno("asprintf");
1280 				goto done;
1281 			}
1282 			free(branches);
1283 			branches = s;
1284 		}
1285 	} else if (!fetch_all_branches && default_branch) {
1286 		branchname = default_branch;
1287 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1288 			branchname += 11;
1289 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1290 			err = got_error_from_errno("asprintf");
1291 			goto done;
1292 		}
1293 	}
1294 	if (!TAILQ_EMPTY(wanted_refs)) {
1295 		struct got_pathlist_entry *pe;
1296 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1297 			char *s;
1298 			const char *refname = pe->path;
1299 			if (strncmp(refname, "refs/", 5) == 0)
1300 				branchname += 5;
1301 			if (asprintf(&s, "%s\"%s\" ",
1302 			    refs ? refs : "", refname) == -1) {
1303 				err = got_error_from_errno("asprintf");
1304 				goto done;
1305 			}
1306 			free(refs);
1307 			refs = s;
1308 		}
1309 	}
1310 
1311 	/* Create got.conf(5). */
1312 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1313 	if (gotconfig_path == NULL) {
1314 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1315 		goto done;
1316 	}
1317 	gotconfig_file = fopen(gotconfig_path, "ae");
1318 	if (gotconfig_file == NULL) {
1319 		err = got_error_from_errno2("fopen", gotconfig_path);
1320 		goto done;
1321 	}
1322 	if (asprintf(&gotconfig,
1323 	    "remote \"%s\" {\n"
1324 	    "\tserver %s\n"
1325 	    "\tprotocol %s\n"
1326 	    "%s%s%s"
1327 	    "\trepository \"%s\"\n"
1328 	    "%s%s%s"
1329 	    "%s%s%s"
1330 	    "%s"
1331 	    "%s"
1332 	    "}\n",
1333 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1334 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1335 	    remote_repo_path, branches ? "\tbranch { " : "",
1336 	    branches ? branches : "", branches ? "}\n" : "",
1337 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
1338 	    mirror_references ? "\tmirror_references yes\n" : "",
1339 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1340 		err = got_error_from_errno("asprintf");
1341 		goto done;
1342 	}
1343 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1344 	if (n != strlen(gotconfig)) {
1345 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1346 		goto done;
1347 	}
1348 
1349 done:
1350 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1351 		err = got_error_from_errno2("fclose", gotconfig_path);
1352 	free(gotconfig_path);
1353 	free(branches);
1354 	return err;
1355 }
1356 
1357 static const struct got_error *
1358 create_gitconfig(const char *git_url, const char *default_branch,
1359     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1360     struct got_pathlist_head *wanted_refs, int mirror_references,
1361     struct got_repository *repo)
1362 {
1363 	const struct got_error *err = NULL;
1364 	char *gitconfig_path = NULL;
1365 	char *gitconfig = NULL;
1366 	FILE *gitconfig_file = NULL;
1367 	char *branches = NULL, *refs = NULL;
1368 	const char *branchname;
1369 	ssize_t n;
1370 
1371 	/* Create a config file Git can understand. */
1372 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1373 	if (gitconfig_path == NULL) {
1374 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1375 		goto done;
1376 	}
1377 	gitconfig_file = fopen(gitconfig_path, "ae");
1378 	if (gitconfig_file == NULL) {
1379 		err = got_error_from_errno2("fopen", gitconfig_path);
1380 		goto done;
1381 	}
1382 	if (fetch_all_branches) {
1383 		if (mirror_references) {
1384 			if (asprintf(&branches,
1385 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1386 				err = got_error_from_errno("asprintf");
1387 				goto done;
1388 			}
1389 		} else if (asprintf(&branches,
1390 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1391 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1392 			err = got_error_from_errno("asprintf");
1393 			goto done;
1394 		}
1395 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1396 		struct got_pathlist_entry *pe;
1397 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1398 			char *s;
1399 			branchname = pe->path;
1400 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1401 				branchname += 11;
1402 			if (mirror_references) {
1403 				if (asprintf(&s,
1404 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1405 				    branches ? branches : "",
1406 				    branchname, branchname) == -1) {
1407 					err = got_error_from_errno("asprintf");
1408 					goto done;
1409 				}
1410 			} else if (asprintf(&s,
1411 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1412 			    branches ? branches : "",
1413 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1414 			    branchname) == -1) {
1415 				err = got_error_from_errno("asprintf");
1416 				goto done;
1417 			}
1418 			free(branches);
1419 			branches = s;
1420 		}
1421 	} else {
1422 		/*
1423 		 * If the server specified a default branch, use just that one.
1424 		 * Otherwise fall back to fetching all branches on next fetch.
1425 		 */
1426 		if (default_branch) {
1427 			branchname = default_branch;
1428 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1429 				branchname += 11;
1430 		} else
1431 			branchname = "*"; /* fall back to all branches */
1432 		if (mirror_references) {
1433 			if (asprintf(&branches,
1434 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1435 			    branchname, branchname) == -1) {
1436 				err = got_error_from_errno("asprintf");
1437 				goto done;
1438 			}
1439 		} else if (asprintf(&branches,
1440 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1441 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1442 		    branchname) == -1) {
1443 			err = got_error_from_errno("asprintf");
1444 			goto done;
1445 		}
1446 	}
1447 	if (!TAILQ_EMPTY(wanted_refs)) {
1448 		struct got_pathlist_entry *pe;
1449 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1450 			char *s;
1451 			const char *refname = pe->path;
1452 			if (strncmp(refname, "refs/", 5) == 0)
1453 				refname += 5;
1454 			if (mirror_references) {
1455 				if (asprintf(&s,
1456 				    "%s\tfetch = refs/%s:refs/%s\n",
1457 				    refs ? refs : "", refname, refname) == -1) {
1458 					err = got_error_from_errno("asprintf");
1459 					goto done;
1460 				}
1461 			} else if (asprintf(&s,
1462 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1463 			    refs ? refs : "",
1464 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1465 			    refname) == -1) {
1466 				err = got_error_from_errno("asprintf");
1467 				goto done;
1468 			}
1469 			free(refs);
1470 			refs = s;
1471 		}
1472 	}
1473 
1474 	if (asprintf(&gitconfig,
1475 	    "[remote \"%s\"]\n"
1476 	    "\turl = %s\n"
1477 	    "%s"
1478 	    "%s"
1479 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1480 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1481 	    refs ? refs : "") == -1) {
1482 		err = got_error_from_errno("asprintf");
1483 		goto done;
1484 	}
1485 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1486 	if (n != strlen(gitconfig)) {
1487 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1488 		goto done;
1489 	}
1490 done:
1491 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1492 		err = got_error_from_errno2("fclose", gitconfig_path);
1493 	free(gitconfig_path);
1494 	free(branches);
1495 	return err;
1496 }
1497 
1498 static const struct got_error *
1499 create_config_files(const char *proto, const char *host, const char *port,
1500     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1501     int mirror_references, struct got_pathlist_head *symrefs,
1502     struct got_pathlist_head *wanted_branches,
1503     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1504 {
1505 	const struct got_error *err = NULL;
1506 	const char *default_branch = NULL;
1507 	struct got_pathlist_entry *pe;
1508 
1509 	/*
1510 	 * If we asked for a set of wanted branches then use the first
1511 	 * one of those.
1512 	 */
1513 	if (!TAILQ_EMPTY(wanted_branches)) {
1514 		pe = TAILQ_FIRST(wanted_branches);
1515 		default_branch = pe->path;
1516 	} else {
1517 		/* First HEAD ref listed by server is the default branch. */
1518 		TAILQ_FOREACH(pe, symrefs, entry) {
1519 			const char *refname = pe->path;
1520 			const char *target = pe->data;
1521 
1522 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1523 				continue;
1524 
1525 			default_branch = target;
1526 			break;
1527 		}
1528 	}
1529 
1530 	/* Create got.conf(5). */
1531 	err = create_gotconfig(proto, host, port, remote_repo_path,
1532 	    default_branch, fetch_all_branches, wanted_branches,
1533 	    wanted_refs, mirror_references, repo);
1534 	if (err)
1535 		return err;
1536 
1537 	/* Create a config file Git can understand. */
1538 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1539 	    wanted_branches, wanted_refs, mirror_references, repo);
1540 }
1541 
1542 static const struct got_error *
1543 cmd_clone(int argc, char *argv[])
1544 {
1545 	const struct got_error *error = NULL;
1546 	const char *uri, *dirname;
1547 	char *proto, *host, *port, *repo_name, *server_path;
1548 	char *default_destdir = NULL, *id_str = NULL;
1549 	const char *repo_path;
1550 	struct got_repository *repo = NULL;
1551 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1552 	struct got_pathlist_entry *pe;
1553 	struct got_object_id *pack_hash = NULL;
1554 	int ch, fetchfd = -1, fetchstatus;
1555 	pid_t fetchpid = -1;
1556 	struct got_fetch_progress_arg fpa;
1557 	char *git_url = NULL;
1558 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1559 	int bflag = 0, list_refs_only = 0;
1560 	int *pack_fds = NULL;
1561 
1562 	TAILQ_INIT(&refs);
1563 	TAILQ_INIT(&symrefs);
1564 	TAILQ_INIT(&wanted_branches);
1565 	TAILQ_INIT(&wanted_refs);
1566 
1567 	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
1568 		switch (ch) {
1569 		case 'a':
1570 			fetch_all_branches = 1;
1571 			break;
1572 		case 'b':
1573 			error = got_pathlist_append(&wanted_branches,
1574 			    optarg, NULL);
1575 			if (error)
1576 				return error;
1577 			bflag = 1;
1578 			break;
1579 		case 'l':
1580 			list_refs_only = 1;
1581 			break;
1582 		case 'm':
1583 			mirror_references = 1;
1584 			break;
1585 		case 'q':
1586 			verbosity = -1;
1587 			break;
1588 		case 'R':
1589 			error = got_pathlist_append(&wanted_refs,
1590 			    optarg, NULL);
1591 			if (error)
1592 				return error;
1593 			break;
1594 		case 'v':
1595 			if (verbosity < 0)
1596 				verbosity = 0;
1597 			else if (verbosity < 3)
1598 				verbosity++;
1599 			break;
1600 		default:
1601 			usage_clone();
1602 			break;
1603 		}
1604 	}
1605 	argc -= optind;
1606 	argv += optind;
1607 
1608 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1609 		option_conflict('a', 'b');
1610 	if (list_refs_only) {
1611 		if (!TAILQ_EMPTY(&wanted_branches))
1612 			option_conflict('l', 'b');
1613 		if (fetch_all_branches)
1614 			option_conflict('l', 'a');
1615 		if (mirror_references)
1616 			option_conflict('l', 'm');
1617 		if (!TAILQ_EMPTY(&wanted_refs))
1618 			option_conflict('l', 'R');
1619 	}
1620 
1621 	uri = argv[0];
1622 
1623 	if (argc == 1)
1624 		dirname = NULL;
1625 	else if (argc == 2)
1626 		dirname = argv[1];
1627 	else
1628 		usage_clone();
1629 
1630 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1631 	    &repo_name, uri);
1632 	if (error)
1633 		goto done;
1634 
1635 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1636 	    host, port ? ":" : "", port ? port : "",
1637 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1638 		error = got_error_from_errno("asprintf");
1639 		goto done;
1640 	}
1641 
1642 	if (strcmp(proto, "git") == 0) {
1643 #ifndef PROFILE
1644 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1645 		    "sendfd dns inet unveil", NULL) == -1)
1646 			err(1, "pledge");
1647 #endif
1648 	} else if (strcmp(proto, "git+ssh") == 0 ||
1649 	    strcmp(proto, "ssh") == 0 ||
1650 	    strcmp(proto, "git+http") == 0 ||
1651 	    strcmp(proto, "http") == 0 ||
1652 	    strcmp(proto, "git+https") == 0 ||
1653 	    strcmp(proto, "https") == 0) {
1654 #ifndef PROFILE
1655 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1656 		    "sendfd unveil", NULL) == -1)
1657 			err(1, "pledge");
1658 #endif
1659 	} else {
1660 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1661 		goto done;
1662 	}
1663 	if (dirname == NULL) {
1664 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1665 			error = got_error_from_errno("asprintf");
1666 			goto done;
1667 		}
1668 		repo_path = default_destdir;
1669 	} else
1670 		repo_path = dirname;
1671 
1672 	if (!list_refs_only) {
1673 		error = got_path_mkdir(repo_path);
1674 		if (error &&
1675 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1676 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1677 			goto done;
1678 		if (!got_path_dir_is_empty(repo_path)) {
1679 			error = got_error_path(repo_path,
1680 			    GOT_ERR_DIR_NOT_EMPTY);
1681 			goto done;
1682 		}
1683 	}
1684 
1685 	error = got_dial_apply_unveil(proto);
1686 	if (error)
1687 		goto done;
1688 
1689 	error = apply_unveil(repo_path, 0, NULL);
1690 	if (error)
1691 		goto done;
1692 
1693 	if (verbosity >= 0)
1694 		printf("Connecting to %s\n", git_url);
1695 
1696 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1697 	    server_path, verbosity);
1698 	if (error)
1699 		goto done;
1700 
1701 #ifndef PROFILE
1702 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd",
1703 	     NULL) == -1)
1704 		err(1, "pledge");
1705 #endif
1706 	if (!list_refs_only) {
1707 		error = got_repo_init(repo_path, NULL);
1708 		if (error)
1709 			goto done;
1710 		error = got_repo_pack_fds_open(&pack_fds);
1711 		if (error != NULL)
1712 			goto done;
1713 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1714 		if (error)
1715 			goto done;
1716 	}
1717 
1718 	fpa.last_scaled_size[0] = '\0';
1719 	fpa.last_p_indexed = -1;
1720 	fpa.last_p_resolved = -1;
1721 	fpa.verbosity = verbosity;
1722 	fpa.create_configs = 1;
1723 	fpa.configs_created = 0;
1724 	fpa.repo = repo;
1725 	fpa.config_info.symrefs = &symrefs;
1726 	fpa.config_info.wanted_branches = &wanted_branches;
1727 	fpa.config_info.wanted_refs = &wanted_refs;
1728 	fpa.config_info.proto = proto;
1729 	fpa.config_info.host = host;
1730 	fpa.config_info.port = port;
1731 	fpa.config_info.remote_repo_path = server_path;
1732 	fpa.config_info.git_url = git_url;
1733 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1734 	fpa.config_info.mirror_references = mirror_references;
1735 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1736 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1737 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1738 	    list_refs_only, verbosity, fetchfd, repo, NULL, NULL, bflag,
1739 	    fetch_progress, &fpa);
1740 	if (error)
1741 		goto done;
1742 
1743 	if (list_refs_only) {
1744 		error = list_remote_refs(&symrefs, &refs);
1745 		goto done;
1746 	}
1747 
1748 	if (pack_hash == NULL) {
1749 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1750 		    "server sent an empty pack file");
1751 		goto done;
1752 	}
1753 	error = got_object_id_str(&id_str, pack_hash);
1754 	if (error)
1755 		goto done;
1756 	if (verbosity >= 0)
1757 		printf("\nFetched %s.pack\n", id_str);
1758 	free(id_str);
1759 
1760 	/* Set up references provided with the pack file. */
1761 	TAILQ_FOREACH(pe, &refs, entry) {
1762 		const char *refname = pe->path;
1763 		struct got_object_id *id = pe->data;
1764 		char *remote_refname;
1765 
1766 		if (is_wanted_ref(&wanted_refs, refname) &&
1767 		    !mirror_references) {
1768 			error = create_wanted_ref(refname, id,
1769 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1770 			    verbosity - 1, repo);
1771 			if (error)
1772 				goto done;
1773 			continue;
1774 		}
1775 
1776 		error = create_ref(refname, id, verbosity - 1, repo);
1777 		if (error)
1778 			goto done;
1779 
1780 		if (mirror_references)
1781 			continue;
1782 
1783 		if (strncmp("refs/heads/", refname, 11) != 0)
1784 			continue;
1785 
1786 		if (asprintf(&remote_refname,
1787 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1788 		    refname + 11) == -1) {
1789 			error = got_error_from_errno("asprintf");
1790 			goto done;
1791 		}
1792 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1793 		free(remote_refname);
1794 		if (error)
1795 			goto done;
1796 	}
1797 
1798 	/* Set the HEAD reference if the server provided one. */
1799 	TAILQ_FOREACH(pe, &symrefs, entry) {
1800 		struct got_reference *target_ref;
1801 		const char *refname = pe->path;
1802 		const char *target = pe->data;
1803 		char *remote_refname = NULL, *remote_target = NULL;
1804 
1805 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1806 			continue;
1807 
1808 		error = got_ref_open(&target_ref, repo, target, 0);
1809 		if (error) {
1810 			if (error->code == GOT_ERR_NOT_REF) {
1811 				error = NULL;
1812 				continue;
1813 			}
1814 			goto done;
1815 		}
1816 
1817 		error = create_symref(refname, target_ref, verbosity, repo);
1818 		got_ref_close(target_ref);
1819 		if (error)
1820 			goto done;
1821 
1822 		if (mirror_references)
1823 			continue;
1824 
1825 		if (strncmp("refs/heads/", target, 11) != 0)
1826 			continue;
1827 
1828 		if (asprintf(&remote_refname,
1829 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1830 		    refname) == -1) {
1831 			error = got_error_from_errno("asprintf");
1832 			goto done;
1833 		}
1834 		if (asprintf(&remote_target,
1835 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1836 		    target + 11) == -1) {
1837 			error = got_error_from_errno("asprintf");
1838 			free(remote_refname);
1839 			goto done;
1840 		}
1841 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1842 		if (error) {
1843 			free(remote_refname);
1844 			free(remote_target);
1845 			if (error->code == GOT_ERR_NOT_REF) {
1846 				error = NULL;
1847 				continue;
1848 			}
1849 			goto done;
1850 		}
1851 		error = create_symref(remote_refname, target_ref,
1852 		    verbosity - 1, repo);
1853 		free(remote_refname);
1854 		free(remote_target);
1855 		got_ref_close(target_ref);
1856 		if (error)
1857 			goto done;
1858 	}
1859 	if (pe == NULL) {
1860 		/*
1861 		 * We failed to set the HEAD reference. If we asked for
1862 		 * a set of wanted branches use the first of one of those
1863 		 * which could be fetched instead.
1864 		 */
1865 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1866 			const char *target = pe->path;
1867 			struct got_reference *target_ref;
1868 
1869 			error = got_ref_open(&target_ref, repo, target, 0);
1870 			if (error) {
1871 				if (error->code == GOT_ERR_NOT_REF) {
1872 					error = NULL;
1873 					continue;
1874 				}
1875 				goto done;
1876 			}
1877 
1878 			error = create_symref(GOT_REF_HEAD, target_ref,
1879 			    verbosity, repo);
1880 			got_ref_close(target_ref);
1881 			if (error)
1882 				goto done;
1883 			break;
1884 		}
1885 
1886 		if (!fpa.configs_created && pe != NULL) {
1887 			error = create_config_files(fpa.config_info.proto,
1888 			    fpa.config_info.host, fpa.config_info.port,
1889 			    fpa.config_info.remote_repo_path,
1890 			    fpa.config_info.git_url,
1891 			    fpa.config_info.fetch_all_branches,
1892 			    fpa.config_info.mirror_references,
1893 			    fpa.config_info.symrefs,
1894 			    fpa.config_info.wanted_branches,
1895 			    fpa.config_info.wanted_refs, fpa.repo);
1896 			if (error)
1897 				goto done;
1898 		}
1899 	}
1900 
1901 	if (verbosity >= 0)
1902 		printf("Created %s repository '%s'\n",
1903 		    mirror_references ? "mirrored" : "cloned", repo_path);
1904 done:
1905 	if (pack_fds) {
1906 		const struct got_error *pack_err =
1907 		    got_repo_pack_fds_close(pack_fds);
1908 		if (error == NULL)
1909 			error = pack_err;
1910 	}
1911 	if (fetchpid > 0) {
1912 		if (kill(fetchpid, SIGTERM) == -1)
1913 			error = got_error_from_errno("kill");
1914 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1915 			error = got_error_from_errno("waitpid");
1916 	}
1917 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1918 		error = got_error_from_errno("close");
1919 	if (repo) {
1920 		const struct got_error *close_err = got_repo_close(repo);
1921 		if (error == NULL)
1922 			error = close_err;
1923 	}
1924 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
1925 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
1926 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
1927 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
1928 	free(pack_hash);
1929 	free(proto);
1930 	free(host);
1931 	free(port);
1932 	free(server_path);
1933 	free(repo_name);
1934 	free(default_destdir);
1935 	free(git_url);
1936 	return error;
1937 }
1938 
1939 static const struct got_error *
1940 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1941     int replace_tags, int verbosity, struct got_repository *repo)
1942 {
1943 	const struct got_error *err = NULL;
1944 	char *new_id_str = NULL;
1945 	struct got_object_id *old_id = NULL;
1946 
1947 	err = got_object_id_str(&new_id_str, new_id);
1948 	if (err)
1949 		goto done;
1950 
1951 	if (!replace_tags &&
1952 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1953 		err = got_ref_resolve(&old_id, repo, ref);
1954 		if (err)
1955 			goto done;
1956 		if (got_object_id_cmp(old_id, new_id) == 0)
1957 			goto done;
1958 		if (verbosity >= 0) {
1959 			printf("Rejecting update of existing tag %s: %s\n",
1960 			    got_ref_get_name(ref), new_id_str);
1961 		}
1962 		goto done;
1963 	}
1964 
1965 	if (got_ref_is_symbolic(ref)) {
1966 		if (verbosity >= 0) {
1967 			printf("Replacing reference %s: %s\n",
1968 			    got_ref_get_name(ref),
1969 			    got_ref_get_symref_target(ref));
1970 		}
1971 		err = got_ref_change_symref_to_ref(ref, new_id);
1972 		if (err)
1973 			goto done;
1974 		err = got_ref_write(ref, repo);
1975 		if (err)
1976 			goto done;
1977 	} else {
1978 		err = got_ref_resolve(&old_id, repo, ref);
1979 		if (err)
1980 			goto done;
1981 		if (got_object_id_cmp(old_id, new_id) == 0)
1982 			goto done;
1983 
1984 		err = got_ref_change_ref(ref, new_id);
1985 		if (err)
1986 			goto done;
1987 		err = got_ref_write(ref, repo);
1988 		if (err)
1989 			goto done;
1990 	}
1991 
1992 	if (verbosity >= 0)
1993 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1994 		    new_id_str);
1995 done:
1996 	free(old_id);
1997 	free(new_id_str);
1998 	return err;
1999 }
2000 
2001 static const struct got_error *
2002 update_symref(const char *refname, struct got_reference *target_ref,
2003     int verbosity, struct got_repository *repo)
2004 {
2005 	const struct got_error *err = NULL, *unlock_err;
2006 	struct got_reference *symref;
2007 	int symref_is_locked = 0;
2008 
2009 	err = got_ref_open(&symref, repo, refname, 1);
2010 	if (err) {
2011 		if (err->code != GOT_ERR_NOT_REF)
2012 			return err;
2013 		err = got_ref_alloc_symref(&symref, refname, target_ref);
2014 		if (err)
2015 			goto done;
2016 
2017 		err = got_ref_write(symref, repo);
2018 		if (err)
2019 			goto done;
2020 
2021 		if (verbosity >= 0)
2022 			printf("Created reference %s: %s\n",
2023 			    got_ref_get_name(symref),
2024 			    got_ref_get_symref_target(symref));
2025 	} else {
2026 		symref_is_locked = 1;
2027 
2028 		if (strcmp(got_ref_get_symref_target(symref),
2029 		    got_ref_get_name(target_ref)) == 0)
2030 			goto done;
2031 
2032 		err = got_ref_change_symref(symref,
2033 		    got_ref_get_name(target_ref));
2034 		if (err)
2035 			goto done;
2036 
2037 		err = got_ref_write(symref, repo);
2038 		if (err)
2039 			goto done;
2040 
2041 		if (verbosity >= 0)
2042 			printf("Updated %s: %s\n", got_ref_get_name(symref),
2043 			    got_ref_get_symref_target(symref));
2044 
2045 	}
2046 done:
2047 	if (symref_is_locked) {
2048 		unlock_err = got_ref_unlock(symref);
2049 		if (unlock_err && err == NULL)
2050 			err = unlock_err;
2051 	}
2052 	got_ref_close(symref);
2053 	return err;
2054 }
2055 
2056 __dead static void
2057 usage_fetch(void)
2058 {
2059 	fprintf(stderr, "usage: %s fetch [-adlqtvX] [-b branch] "
2060 	    "[-R reference] [-r repository-path] [remote-repository]\n",
2061 	    getprogname());
2062 	exit(1);
2063 }
2064 
2065 static const struct got_error *
2066 delete_missing_ref(struct got_reference *ref,
2067     int verbosity, struct got_repository *repo)
2068 {
2069 	const struct got_error *err = NULL;
2070 	struct got_object_id *id = NULL;
2071 	char *id_str = NULL;
2072 
2073 	if (got_ref_is_symbolic(ref)) {
2074 		err = got_ref_delete(ref, repo);
2075 		if (err)
2076 			return err;
2077 		if (verbosity >= 0) {
2078 			printf("Deleted %s: %s\n",
2079 			    got_ref_get_name(ref),
2080 			    got_ref_get_symref_target(ref));
2081 		}
2082 	} else {
2083 		err = got_ref_resolve(&id, repo, ref);
2084 		if (err)
2085 			return err;
2086 		err = got_object_id_str(&id_str, id);
2087 		if (err)
2088 			goto done;
2089 
2090 		err = got_ref_delete(ref, repo);
2091 		if (err)
2092 			goto done;
2093 		if (verbosity >= 0) {
2094 			printf("Deleted %s: %s\n",
2095 			    got_ref_get_name(ref), id_str);
2096 		}
2097 	}
2098 done:
2099 	free(id);
2100 	free(id_str);
2101 	return err;
2102 }
2103 
2104 static const struct got_error *
2105 delete_missing_refs(struct got_pathlist_head *their_refs,
2106     struct got_pathlist_head *their_symrefs,
2107     const struct got_remote_repo *remote,
2108     int verbosity, struct got_repository *repo)
2109 {
2110 	const struct got_error *err = NULL, *unlock_err;
2111 	struct got_reflist_head my_refs;
2112 	struct got_reflist_entry *re;
2113 	struct got_pathlist_entry *pe;
2114 	char *remote_namespace = NULL;
2115 	char *local_refname = NULL;
2116 
2117 	TAILQ_INIT(&my_refs);
2118 
2119 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2120 	    == -1)
2121 		return got_error_from_errno("asprintf");
2122 
2123 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2124 	if (err)
2125 		goto done;
2126 
2127 	TAILQ_FOREACH(re, &my_refs, entry) {
2128 		const char *refname = got_ref_get_name(re->ref);
2129 		const char *their_refname;
2130 
2131 		if (remote->mirror_references) {
2132 			their_refname = refname;
2133 		} else {
2134 			if (strncmp(refname, remote_namespace,
2135 			    strlen(remote_namespace)) == 0) {
2136 				if (strcmp(refname + strlen(remote_namespace),
2137 				    GOT_REF_HEAD) == 0)
2138 					continue;
2139 				if (asprintf(&local_refname, "refs/heads/%s",
2140 				    refname + strlen(remote_namespace)) == -1) {
2141 					err = got_error_from_errno("asprintf");
2142 					goto done;
2143 				}
2144 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2145 				continue;
2146 
2147 			their_refname = local_refname;
2148 		}
2149 
2150 		TAILQ_FOREACH(pe, their_refs, entry) {
2151 			if (strcmp(their_refname, pe->path) == 0)
2152 				break;
2153 		}
2154 		if (pe != NULL)
2155 			continue;
2156 
2157 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2158 			if (strcmp(their_refname, pe->path) == 0)
2159 				break;
2160 		}
2161 		if (pe != NULL)
2162 			continue;
2163 
2164 		err = delete_missing_ref(re->ref, verbosity, repo);
2165 		if (err)
2166 			break;
2167 
2168 		if (local_refname) {
2169 			struct got_reference *ref;
2170 			err = got_ref_open(&ref, repo, local_refname, 1);
2171 			if (err) {
2172 				if (err->code != GOT_ERR_NOT_REF)
2173 					break;
2174 				free(local_refname);
2175 				local_refname = NULL;
2176 				continue;
2177 			}
2178 			err = delete_missing_ref(ref, verbosity, repo);
2179 			if (err)
2180 				break;
2181 			unlock_err = got_ref_unlock(ref);
2182 			got_ref_close(ref);
2183 			if (unlock_err && err == NULL) {
2184 				err = unlock_err;
2185 				break;
2186 			}
2187 
2188 			free(local_refname);
2189 			local_refname = NULL;
2190 		}
2191 	}
2192 done:
2193 	got_ref_list_free(&my_refs);
2194 	free(remote_namespace);
2195 	free(local_refname);
2196 	return err;
2197 }
2198 
2199 static const struct got_error *
2200 update_wanted_ref(const char *refname, struct got_object_id *id,
2201     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2202 {
2203 	const struct got_error *err, *unlock_err;
2204 	char *remote_refname;
2205 	struct got_reference *ref;
2206 
2207 	if (strncmp("refs/", refname, 5) == 0)
2208 		refname += 5;
2209 
2210 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2211 	    remote_repo_name, refname) == -1)
2212 		return got_error_from_errno("asprintf");
2213 
2214 	err = got_ref_open(&ref, repo, remote_refname, 1);
2215 	if (err) {
2216 		if (err->code != GOT_ERR_NOT_REF)
2217 			goto done;
2218 		err = create_ref(remote_refname, id, verbosity, repo);
2219 	} else {
2220 		err = update_ref(ref, id, 0, verbosity, repo);
2221 		unlock_err = got_ref_unlock(ref);
2222 		if (unlock_err && err == NULL)
2223 			err = unlock_err;
2224 		got_ref_close(ref);
2225 	}
2226 done:
2227 	free(remote_refname);
2228 	return err;
2229 }
2230 
2231 static const struct got_error *
2232 delete_ref(struct got_repository *repo, struct got_reference *ref)
2233 {
2234 	const struct got_error *err = NULL;
2235 	struct got_object_id *id = NULL;
2236 	char *id_str = NULL;
2237 	const char *target;
2238 
2239 	if (got_ref_is_symbolic(ref)) {
2240 		target = got_ref_get_symref_target(ref);
2241 	} else {
2242 		err = got_ref_resolve(&id, repo, ref);
2243 		if (err)
2244 			goto done;
2245 		err = got_object_id_str(&id_str, id);
2246 		if (err)
2247 			goto done;
2248 		target = id_str;
2249 	}
2250 
2251 	err = got_ref_delete(ref, repo);
2252 	if (err)
2253 		goto done;
2254 
2255 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2256 done:
2257 	free(id);
2258 	free(id_str);
2259 	return err;
2260 }
2261 
2262 static const struct got_error *
2263 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2264 {
2265 	const struct got_error *err = NULL;
2266 	struct got_reflist_head refs;
2267 	struct got_reflist_entry *re;
2268 	char *prefix;
2269 
2270 	TAILQ_INIT(&refs);
2271 
2272 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2273 		err = got_error_from_errno("asprintf");
2274 		goto done;
2275 	}
2276 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2277 	if (err)
2278 		goto done;
2279 
2280 	TAILQ_FOREACH(re, &refs, entry)
2281 		delete_ref(repo, re->ref);
2282 done:
2283 	got_ref_list_free(&refs);
2284 	return err;
2285 }
2286 
2287 static const struct got_error *
2288 cmd_fetch(int argc, char *argv[])
2289 {
2290 	const struct got_error *error = NULL, *unlock_err;
2291 	char *cwd = NULL, *repo_path = NULL;
2292 	const char *remote_name;
2293 	char *proto = NULL, *host = NULL, *port = NULL;
2294 	char *repo_name = NULL, *server_path = NULL;
2295 	const struct got_remote_repo *remotes;
2296 	struct got_remote_repo *remote = NULL;
2297 	int nremotes;
2298 	char *id_str = NULL;
2299 	struct got_repository *repo = NULL;
2300 	struct got_worktree *worktree = NULL;
2301 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2302 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2303 	char *head_refname = NULL;
2304 	struct got_pathlist_entry *pe;
2305 	struct got_reflist_head remote_refs;
2306 	struct got_reflist_entry *re;
2307 	struct got_object_id *pack_hash = NULL;
2308 	int i, ch, fetchfd = -1, fetchstatus;
2309 	pid_t fetchpid = -1;
2310 	struct got_fetch_progress_arg fpa;
2311 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2312 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2313 	int *pack_fds = NULL, have_bflag = 0;
2314 	const char *remote_head = NULL, *worktree_branch = NULL;
2315 
2316 	TAILQ_INIT(&refs);
2317 	TAILQ_INIT(&symrefs);
2318 	TAILQ_INIT(&remote_refs);
2319 	TAILQ_INIT(&wanted_branches);
2320 	TAILQ_INIT(&wanted_refs);
2321 
2322 	while ((ch = getopt(argc, argv, "ab:dlqR:r:tvX")) != -1) {
2323 		switch (ch) {
2324 		case 'a':
2325 			fetch_all_branches = 1;
2326 			break;
2327 		case 'b':
2328 			error = got_pathlist_append(&wanted_branches,
2329 			    optarg, NULL);
2330 			if (error)
2331 				return error;
2332 			have_bflag = 1;
2333 			break;
2334 		case 'd':
2335 			delete_refs = 1;
2336 			break;
2337 		case 'l':
2338 			list_refs_only = 1;
2339 			break;
2340 		case 'q':
2341 			verbosity = -1;
2342 			break;
2343 		case 'R':
2344 			error = got_pathlist_append(&wanted_refs,
2345 			    optarg, NULL);
2346 			if (error)
2347 				return error;
2348 			break;
2349 		case 'r':
2350 			repo_path = realpath(optarg, NULL);
2351 			if (repo_path == NULL)
2352 				return got_error_from_errno2("realpath",
2353 				    optarg);
2354 			got_path_strip_trailing_slashes(repo_path);
2355 			break;
2356 		case 't':
2357 			replace_tags = 1;
2358 			break;
2359 		case 'v':
2360 			if (verbosity < 0)
2361 				verbosity = 0;
2362 			else if (verbosity < 3)
2363 				verbosity++;
2364 			break;
2365 		case 'X':
2366 			delete_remote = 1;
2367 			break;
2368 		default:
2369 			usage_fetch();
2370 			break;
2371 		}
2372 	}
2373 	argc -= optind;
2374 	argv += optind;
2375 
2376 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2377 		option_conflict('a', 'b');
2378 	if (list_refs_only) {
2379 		if (!TAILQ_EMPTY(&wanted_branches))
2380 			option_conflict('l', 'b');
2381 		if (fetch_all_branches)
2382 			option_conflict('l', 'a');
2383 		if (delete_refs)
2384 			option_conflict('l', 'd');
2385 		if (delete_remote)
2386 			option_conflict('l', 'X');
2387 	}
2388 	if (delete_remote) {
2389 		if (fetch_all_branches)
2390 			option_conflict('X', 'a');
2391 		if (!TAILQ_EMPTY(&wanted_branches))
2392 			option_conflict('X', 'b');
2393 		if (delete_refs)
2394 			option_conflict('X', 'd');
2395 		if (replace_tags)
2396 			option_conflict('X', 't');
2397 		if (!TAILQ_EMPTY(&wanted_refs))
2398 			option_conflict('X', 'R');
2399 	}
2400 
2401 	if (argc == 0) {
2402 		if (delete_remote)
2403 			errx(1, "-X option requires a remote name");
2404 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2405 	} else if (argc == 1)
2406 		remote_name = argv[0];
2407 	else
2408 		usage_fetch();
2409 
2410 	cwd = getcwd(NULL, 0);
2411 	if (cwd == NULL) {
2412 		error = got_error_from_errno("getcwd");
2413 		goto done;
2414 	}
2415 
2416 	error = got_repo_pack_fds_open(&pack_fds);
2417 	if (error != NULL)
2418 		goto done;
2419 
2420 	if (repo_path == NULL) {
2421 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
2422 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2423 			goto done;
2424 		else
2425 			error = NULL;
2426 		if (worktree) {
2427 			repo_path =
2428 			    strdup(got_worktree_get_repo_path(worktree));
2429 			if (repo_path == NULL)
2430 				error = got_error_from_errno("strdup");
2431 			if (error)
2432 				goto done;
2433 		} else {
2434 			repo_path = strdup(cwd);
2435 			if (repo_path == NULL) {
2436 				error = got_error_from_errno("strdup");
2437 				goto done;
2438 			}
2439 		}
2440 	}
2441 
2442 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2443 	if (error)
2444 		goto done;
2445 
2446 	if (delete_remote) {
2447 		error = delete_refs_for_remote(repo, remote_name);
2448 		goto done; /* nothing else to do */
2449 	}
2450 
2451 	if (worktree) {
2452 		worktree_conf = got_worktree_get_gotconfig(worktree);
2453 		if (worktree_conf) {
2454 			got_gotconfig_get_remotes(&nremotes, &remotes,
2455 			    worktree_conf);
2456 			for (i = 0; i < nremotes; i++) {
2457 				if (strcmp(remotes[i].name, remote_name) == 0) {
2458 					error = got_repo_remote_repo_dup(&remote,
2459 					    &remotes[i]);
2460 					if (error)
2461 						goto done;
2462 					break;
2463 				}
2464 			}
2465 		}
2466 	}
2467 	if (remote == NULL) {
2468 		repo_conf = got_repo_get_gotconfig(repo);
2469 		if (repo_conf) {
2470 			got_gotconfig_get_remotes(&nremotes, &remotes,
2471 			    repo_conf);
2472 			for (i = 0; i < nremotes; i++) {
2473 				if (strcmp(remotes[i].name, remote_name) == 0) {
2474 					error = got_repo_remote_repo_dup(&remote,
2475 					    &remotes[i]);
2476 					if (error)
2477 						goto done;
2478 					break;
2479 				}
2480 			}
2481 		}
2482 	}
2483 	if (remote == NULL) {
2484 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2485 		for (i = 0; i < nremotes; i++) {
2486 			if (strcmp(remotes[i].name, remote_name) == 0) {
2487 				error = got_repo_remote_repo_dup(&remote,
2488 				    &remotes[i]);
2489 				if (error)
2490 					goto done;
2491 				break;
2492 			}
2493 		}
2494 	}
2495 	if (remote == NULL) {
2496 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2497 		goto done;
2498 	}
2499 
2500 	if (TAILQ_EMPTY(&wanted_branches)) {
2501 		if (!fetch_all_branches)
2502 			fetch_all_branches = remote->fetch_all_branches;
2503 		for (i = 0; i < remote->nfetch_branches; i++) {
2504 			error = got_pathlist_append(&wanted_branches,
2505 			    remote->fetch_branches[i], NULL);
2506 			if (error)
2507 				goto done;
2508 		}
2509 	}
2510 	if (TAILQ_EMPTY(&wanted_refs)) {
2511 		for (i = 0; i < remote->nfetch_refs; i++) {
2512 			error = got_pathlist_append(&wanted_refs,
2513 			    remote->fetch_refs[i], NULL);
2514 			if (error)
2515 				goto done;
2516 		}
2517 	}
2518 
2519 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2520 	    &repo_name, remote->fetch_url);
2521 	if (error)
2522 		goto done;
2523 
2524 	if (strcmp(proto, "git") == 0) {
2525 #ifndef PROFILE
2526 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2527 		    "sendfd dns inet unveil", NULL) == -1)
2528 			err(1, "pledge");
2529 #endif
2530 	} else if (strcmp(proto, "git+ssh") == 0 ||
2531 	    strcmp(proto, "ssh") == 0 ||
2532 	    strcmp(proto, "git+http") == 0 ||
2533 	    strcmp(proto, "http") == 0 ||
2534 	    strcmp(proto, "git+https") == 0 ||
2535 	    strcmp(proto, "https") == 0) {
2536 #ifndef PROFILE
2537 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2538 		    "sendfd unveil", NULL) == -1)
2539 			err(1, "pledge");
2540 #endif
2541 	} else {
2542 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2543 		goto done;
2544 	}
2545 
2546 	error = got_dial_apply_unveil(proto);
2547 	if (error)
2548 		goto done;
2549 
2550 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2551 	if (error)
2552 		goto done;
2553 
2554 	if (worktree) {
2555 		head_refname = strdup(got_worktree_get_head_ref_name(worktree));
2556 		if (head_refname == NULL) {
2557 			error = got_error_from_errno("strdup");
2558 			goto done;
2559 		}
2560 
2561 		/* Release work tree lock. */
2562 		got_worktree_close(worktree);
2563 		worktree = NULL;
2564 	}
2565 
2566 	if (verbosity >= 0) {
2567 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
2568 		    remote->name, proto, host,
2569 		    port ? ":" : "", port ? port : "",
2570 		    *server_path == '/' ? "" : "/", server_path);
2571 	}
2572 
2573 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2574 	    server_path, verbosity);
2575 	if (error)
2576 		goto done;
2577 #ifndef PROFILE
2578 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd",
2579 	     NULL) == -1)
2580 		err(1, "pledge");
2581 #endif
2582 	if (!have_bflag) {
2583 		/*
2584 		 * If set, get this remote's HEAD ref target so
2585 		 * if it has changed on the server we can fetch it.
2586 		 */
2587 		error = got_ref_list(&remote_refs, repo, "refs/remotes",
2588 		    got_ref_cmp_by_name, repo);
2589 		if (error)
2590 			goto done;
2591 
2592 		TAILQ_FOREACH(re, &remote_refs, entry) {
2593 			const char	*remote_refname, *remote_target;
2594 			size_t		 remote_name_len;
2595 
2596 			if (!got_ref_is_symbolic(re->ref))
2597 				continue;
2598 
2599 			remote_name_len = strlen(remote->name);
2600 			remote_refname = got_ref_get_name(re->ref);
2601 
2602 			/* we only want refs/remotes/$remote->name/HEAD */
2603 			if (strncmp(remote_refname + 13, remote->name,
2604 			    remote_name_len) != 0)
2605 				continue;
2606 
2607 			if (strcmp(remote_refname + remote_name_len + 14,
2608 			    GOT_REF_HEAD) != 0)
2609 				continue;
2610 
2611 			/*
2612 			 * Take the name itself because we already
2613 			 * only match with refs/heads/ in fetch_pack().
2614 			 */
2615 			remote_target = got_ref_get_symref_target(re->ref);
2616 			remote_head = remote_target + remote_name_len + 14;
2617 			break;
2618 		}
2619 
2620 		if (head_refname &&
2621 		    strncmp(head_refname, "refs/heads/", 11) == 0)
2622 			worktree_branch = head_refname;
2623 	}
2624 
2625 	fpa.last_scaled_size[0] = '\0';
2626 	fpa.last_p_indexed = -1;
2627 	fpa.last_p_resolved = -1;
2628 	fpa.verbosity = verbosity;
2629 	fpa.repo = repo;
2630 	fpa.create_configs = 0;
2631 	fpa.configs_created = 0;
2632 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2633 
2634 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2635 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2636 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2637 	    worktree_branch, remote_head, have_bflag, fetch_progress, &fpa);
2638 	if (error)
2639 		goto done;
2640 
2641 	if (list_refs_only) {
2642 		error = list_remote_refs(&symrefs, &refs);
2643 		goto done;
2644 	}
2645 
2646 	if (pack_hash == NULL) {
2647 		if (verbosity >= 0)
2648 			printf("Already up-to-date\n");
2649 	} else if (verbosity >= 0) {
2650 		error = got_object_id_str(&id_str, pack_hash);
2651 		if (error)
2652 			goto done;
2653 		printf("\nFetched %s.pack\n", id_str);
2654 		free(id_str);
2655 		id_str = NULL;
2656 	}
2657 
2658 	/* Update references provided with the pack file. */
2659 	TAILQ_FOREACH(pe, &refs, entry) {
2660 		const char *refname = pe->path;
2661 		struct got_object_id *id = pe->data;
2662 		struct got_reference *ref;
2663 		char *remote_refname;
2664 
2665 		if (is_wanted_ref(&wanted_refs, refname) &&
2666 		    !remote->mirror_references) {
2667 			error = update_wanted_ref(refname, id,
2668 			    remote->name, verbosity, repo);
2669 			if (error)
2670 				goto done;
2671 			continue;
2672 		}
2673 
2674 		if (remote->mirror_references ||
2675 		    strncmp("refs/tags/", refname, 10) == 0) {
2676 			error = got_ref_open(&ref, repo, refname, 1);
2677 			if (error) {
2678 				if (error->code != GOT_ERR_NOT_REF)
2679 					goto done;
2680 				error = create_ref(refname, id, verbosity,
2681 				    repo);
2682 				if (error)
2683 					goto done;
2684 			} else {
2685 				error = update_ref(ref, id, replace_tags,
2686 				    verbosity, repo);
2687 				unlock_err = got_ref_unlock(ref);
2688 				if (unlock_err && error == NULL)
2689 					error = unlock_err;
2690 				got_ref_close(ref);
2691 				if (error)
2692 					goto done;
2693 			}
2694 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2695 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2696 			    remote_name, refname + 11) == -1) {
2697 				error = got_error_from_errno("asprintf");
2698 				goto done;
2699 			}
2700 
2701 			error = got_ref_open(&ref, repo, remote_refname, 1);
2702 			if (error) {
2703 				if (error->code != GOT_ERR_NOT_REF)
2704 					goto done;
2705 				error = create_ref(remote_refname, id,
2706 				    verbosity, repo);
2707 				if (error)
2708 					goto done;
2709 			} else {
2710 				error = update_ref(ref, id, replace_tags,
2711 				    verbosity, repo);
2712 				unlock_err = got_ref_unlock(ref);
2713 				if (unlock_err && error == NULL)
2714 					error = unlock_err;
2715 				got_ref_close(ref);
2716 				if (error)
2717 					goto done;
2718 			}
2719 
2720 			/* Also create a local branch if none exists yet. */
2721 			error = got_ref_open(&ref, repo, refname, 1);
2722 			if (error) {
2723 				if (error->code != GOT_ERR_NOT_REF)
2724 					goto done;
2725 				error = create_ref(refname, id, verbosity,
2726 				    repo);
2727 				if (error)
2728 					goto done;
2729 			} else {
2730 				unlock_err = got_ref_unlock(ref);
2731 				if (unlock_err && error == NULL)
2732 					error = unlock_err;
2733 				got_ref_close(ref);
2734 			}
2735 		}
2736 	}
2737 	if (delete_refs) {
2738 		error = delete_missing_refs(&refs, &symrefs, remote,
2739 		    verbosity, repo);
2740 		if (error)
2741 			goto done;
2742 	}
2743 
2744 	if (!remote->mirror_references) {
2745 		/* Update remote HEAD reference if the server provided one. */
2746 		TAILQ_FOREACH(pe, &symrefs, entry) {
2747 			struct got_reference *target_ref;
2748 			const char *refname = pe->path;
2749 			const char *target = pe->data;
2750 			char *remote_refname = NULL, *remote_target = NULL;
2751 
2752 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2753 				continue;
2754 
2755 			if (strncmp("refs/heads/", target, 11) != 0)
2756 				continue;
2757 
2758 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2759 			    remote->name, refname) == -1) {
2760 				error = got_error_from_errno("asprintf");
2761 				goto done;
2762 			}
2763 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2764 			    remote->name, target + 11) == -1) {
2765 				error = got_error_from_errno("asprintf");
2766 				free(remote_refname);
2767 				goto done;
2768 			}
2769 
2770 			error = got_ref_open(&target_ref, repo, remote_target,
2771 			    0);
2772 			if (error) {
2773 				free(remote_refname);
2774 				free(remote_target);
2775 				if (error->code == GOT_ERR_NOT_REF) {
2776 					error = NULL;
2777 					continue;
2778 				}
2779 				goto done;
2780 			}
2781 			error = update_symref(remote_refname, target_ref,
2782 			    verbosity, repo);
2783 			free(remote_refname);
2784 			free(remote_target);
2785 			got_ref_close(target_ref);
2786 			if (error)
2787 				goto done;
2788 		}
2789 	}
2790 done:
2791 	if (fetchpid > 0) {
2792 		if (kill(fetchpid, SIGTERM) == -1)
2793 			error = got_error_from_errno("kill");
2794 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2795 			error = got_error_from_errno("waitpid");
2796 	}
2797 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2798 		error = got_error_from_errno("close");
2799 	if (repo) {
2800 		const struct got_error *close_err = got_repo_close(repo);
2801 		if (error == NULL)
2802 			error = close_err;
2803 	}
2804 	if (worktree)
2805 		got_worktree_close(worktree);
2806 	if (pack_fds) {
2807 		const struct got_error *pack_err =
2808 		    got_repo_pack_fds_close(pack_fds);
2809 		if (error == NULL)
2810 			error = pack_err;
2811 	}
2812 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
2813 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
2814 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
2815 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
2816 	got_ref_list_free(&remote_refs);
2817 	got_repo_free_remote_repo_data(remote);
2818 	free(remote);
2819 	free(head_refname);
2820 	free(id_str);
2821 	free(cwd);
2822 	free(repo_path);
2823 	free(pack_hash);
2824 	free(proto);
2825 	free(host);
2826 	free(port);
2827 	free(server_path);
2828 	free(repo_name);
2829 	return error;
2830 }
2831 
2832 
2833 __dead static void
2834 usage_checkout(void)
2835 {
2836 	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
2837 	    "[-p path-prefix] repository-path [work-tree-path]\n",
2838 	    getprogname());
2839 	exit(1);
2840 }
2841 
2842 static void
2843 show_worktree_base_ref_warning(void)
2844 {
2845 	fprintf(stderr, "%s: warning: could not create a reference "
2846 	    "to the work tree's base commit; the commit could be "
2847 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2848 	    "repository writable and running 'got update' will prevent this\n",
2849 	    getprogname());
2850 }
2851 
2852 struct got_checkout_progress_arg {
2853 	const char *worktree_path;
2854 	int had_base_commit_ref_error;
2855 	int verbosity;
2856 };
2857 
2858 static const struct got_error *
2859 checkout_progress(void *arg, unsigned char status, const char *path)
2860 {
2861 	struct got_checkout_progress_arg *a = arg;
2862 
2863 	/* Base commit bump happens silently. */
2864 	if (status == GOT_STATUS_BUMP_BASE)
2865 		return NULL;
2866 
2867 	if (status == GOT_STATUS_BASE_REF_ERR) {
2868 		a->had_base_commit_ref_error = 1;
2869 		return NULL;
2870 	}
2871 
2872 	while (path[0] == '/')
2873 		path++;
2874 
2875 	if (a->verbosity >= 0)
2876 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2877 
2878 	return NULL;
2879 }
2880 
2881 static const struct got_error *
2882 check_cancelled(void *arg)
2883 {
2884 	if (sigint_received || sigpipe_received)
2885 		return got_error(GOT_ERR_CANCELLED);
2886 	return NULL;
2887 }
2888 
2889 static const struct got_error *
2890 check_linear_ancestry(struct got_object_id *commit_id,
2891     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2892     struct got_repository *repo)
2893 {
2894 	const struct got_error *err = NULL;
2895 	struct got_object_id *yca_id;
2896 
2897 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2898 	    commit_id, base_commit_id, 1, 0, repo, check_cancelled, NULL);
2899 	if (err)
2900 		return err;
2901 
2902 	if (yca_id == NULL)
2903 		return got_error(GOT_ERR_ANCESTRY);
2904 
2905 	/*
2906 	 * Require a straight line of history between the target commit
2907 	 * and the work tree's base commit.
2908 	 *
2909 	 * Non-linear situations such as this require a rebase:
2910 	 *
2911 	 * (commit) D       F (base_commit)
2912 	 *           \     /
2913 	 *            C   E
2914 	 *             \ /
2915 	 *              B (yca)
2916 	 *              |
2917 	 *              A
2918 	 *
2919 	 * 'got update' only handles linear cases:
2920 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2921 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2922 	 */
2923 	if (allow_forwards_in_time_only) {
2924 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2925 		return got_error(GOT_ERR_ANCESTRY);
2926 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2927 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2928 		return got_error(GOT_ERR_ANCESTRY);
2929 
2930 	free(yca_id);
2931 	return NULL;
2932 }
2933 
2934 static const struct got_error *
2935 check_same_branch(struct got_object_id *commit_id,
2936     struct got_reference *head_ref, struct got_repository *repo)
2937 {
2938 	const struct got_error *err = NULL;
2939 	struct got_commit_graph *graph = NULL;
2940 	struct got_object_id *head_commit_id = NULL;
2941 
2942 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2943 	if (err)
2944 		goto done;
2945 
2946 	if (got_object_id_cmp(head_commit_id, commit_id) == 0)
2947 		goto done;
2948 
2949 	err = got_commit_graph_open(&graph, "/", 1);
2950 	if (err)
2951 		goto done;
2952 
2953 	err = got_commit_graph_bfsort(graph, head_commit_id, repo,
2954 	    check_cancelled, NULL);
2955 	if (err)
2956 		goto done;
2957 
2958 	for (;;) {
2959 		struct got_object_id id;
2960 
2961 		err = got_commit_graph_iter_next(&id, graph, repo,
2962 		    check_cancelled, NULL);
2963 		if (err) {
2964 			if (err->code == GOT_ERR_ITER_COMPLETED)
2965 				err = got_error(GOT_ERR_ANCESTRY);
2966 			break;
2967 		}
2968 
2969 		if (got_object_id_cmp(&id, commit_id) == 0)
2970 			break;
2971 	}
2972 done:
2973 	if (graph)
2974 		got_commit_graph_close(graph);
2975 	free(head_commit_id);
2976 	return err;
2977 }
2978 
2979 static const struct got_error *
2980 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2981 {
2982 	static char msg[512];
2983 	const char *branch_name;
2984 
2985 	if (got_ref_is_symbolic(ref))
2986 		branch_name = got_ref_get_symref_target(ref);
2987 	else
2988 		branch_name = got_ref_get_name(ref);
2989 
2990 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2991 		branch_name += 11;
2992 
2993 	snprintf(msg, sizeof(msg),
2994 	    "target commit is not contained in branch '%s'; "
2995 	    "the branch to use must be specified with -b; "
2996 	    "if necessary a new branch can be created for "
2997 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2998 	    branch_name, commit_id_str);
2999 
3000 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
3001 }
3002 
3003 static const struct got_error *
3004 cmd_checkout(int argc, char *argv[])
3005 {
3006 	const struct got_error *close_err, *error = NULL;
3007 	struct got_repository *repo = NULL;
3008 	struct got_reference *head_ref = NULL, *ref = NULL;
3009 	struct got_worktree *worktree = NULL;
3010 	char *repo_path = NULL;
3011 	char *worktree_path = NULL;
3012 	const char *path_prefix = "";
3013 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
3014 	char *commit_id_str = NULL, *keyword_idstr = NULL;
3015 	struct got_object_id *commit_id = NULL;
3016 	char *cwd = NULL;
3017 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
3018 	struct got_pathlist_head paths;
3019 	struct got_checkout_progress_arg cpa;
3020 	int *pack_fds = NULL;
3021 
3022 	TAILQ_INIT(&paths);
3023 
3024 #ifndef PROFILE
3025 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3026 	    "unveil", NULL) == -1)
3027 		err(1, "pledge");
3028 #endif
3029 
3030 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
3031 		switch (ch) {
3032 		case 'b':
3033 			branch_name = optarg;
3034 			break;
3035 		case 'c':
3036 			commit_id_str = strdup(optarg);
3037 			if (commit_id_str == NULL)
3038 				return got_error_from_errno("strdup");
3039 			break;
3040 		case 'E':
3041 			allow_nonempty = 1;
3042 			break;
3043 		case 'p':
3044 			path_prefix = optarg;
3045 			break;
3046 		case 'q':
3047 			verbosity = -1;
3048 			break;
3049 		default:
3050 			usage_checkout();
3051 			/* NOTREACHED */
3052 		}
3053 	}
3054 
3055 	argc -= optind;
3056 	argv += optind;
3057 
3058 	if (argc == 1) {
3059 		char *base, *dotgit;
3060 		const char *path;
3061 		repo_path = realpath(argv[0], NULL);
3062 		if (repo_path == NULL)
3063 			return got_error_from_errno2("realpath", argv[0]);
3064 		cwd = getcwd(NULL, 0);
3065 		if (cwd == NULL) {
3066 			error = got_error_from_errno("getcwd");
3067 			goto done;
3068 		}
3069 		if (path_prefix[0])
3070 			path = path_prefix;
3071 		else
3072 			path = repo_path;
3073 		error = got_path_basename(&base, path);
3074 		if (error)
3075 			goto done;
3076 		dotgit = strstr(base, ".git");
3077 		if (dotgit)
3078 			*dotgit = '\0';
3079 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
3080 			error = got_error_from_errno("asprintf");
3081 			free(base);
3082 			goto done;
3083 		}
3084 		free(base);
3085 	} else if (argc == 2) {
3086 		repo_path = realpath(argv[0], NULL);
3087 		if (repo_path == NULL) {
3088 			error = got_error_from_errno2("realpath", argv[0]);
3089 			goto done;
3090 		}
3091 		worktree_path = realpath(argv[1], NULL);
3092 		if (worktree_path == NULL) {
3093 			if (errno != ENOENT) {
3094 				error = got_error_from_errno2("realpath",
3095 				    argv[1]);
3096 				goto done;
3097 			}
3098 			worktree_path = strdup(argv[1]);
3099 			if (worktree_path == NULL) {
3100 				error = got_error_from_errno("strdup");
3101 				goto done;
3102 			}
3103 		}
3104 	} else
3105 		usage_checkout();
3106 
3107 	got_path_strip_trailing_slashes(repo_path);
3108 	got_path_strip_trailing_slashes(worktree_path);
3109 
3110 	if (got_path_is_child(worktree_path, repo_path, strlen(repo_path)) ||
3111 	    got_path_is_child(repo_path, worktree_path,
3112 	    strlen(worktree_path))) {
3113 		error = got_error_fmt(GOT_ERR_BAD_PATH,
3114 		    "work tree and repository paths may not overlap: %s",
3115 		    worktree_path);
3116 		goto done;
3117 	}
3118 
3119 	error = got_repo_pack_fds_open(&pack_fds);
3120 	if (error != NULL)
3121 		goto done;
3122 
3123 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
3124 	if (error != NULL)
3125 		goto done;
3126 
3127 	/* Pre-create work tree path for unveil(2) */
3128 	error = got_path_mkdir(worktree_path);
3129 	if (error) {
3130 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
3131 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3132 			goto done;
3133 		if (!allow_nonempty &&
3134 		    !got_path_dir_is_empty(worktree_path)) {
3135 			error = got_error_path(worktree_path,
3136 			    GOT_ERR_DIR_NOT_EMPTY);
3137 			goto done;
3138 		}
3139 	}
3140 
3141 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
3142 	if (error)
3143 		goto done;
3144 
3145 	error = got_ref_open(&head_ref, repo, branch_name, 0);
3146 	if (error != NULL)
3147 		goto done;
3148 
3149 	error = got_worktree_init(worktree_path, head_ref, path_prefix,
3150 	    GOT_WORKTREE_GOT_DIR, repo);
3151 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3152 		goto done;
3153 
3154 	error = got_worktree_open(&worktree, worktree_path,
3155 	    GOT_WORKTREE_GOT_DIR);
3156 	if (error != NULL)
3157 		goto done;
3158 
3159 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
3160 	    path_prefix);
3161 	if (error != NULL)
3162 		goto done;
3163 	if (!same_path_prefix) {
3164 		error = got_error(GOT_ERR_PATH_PREFIX);
3165 		goto done;
3166 	}
3167 
3168 	if (commit_id_str) {
3169 		struct got_reflist_head refs;
3170 		TAILQ_INIT(&refs);
3171 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3172 		    NULL);
3173 		if (error)
3174 			goto done;
3175 
3176 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
3177 		    repo, worktree);
3178 		if (error != NULL)
3179 			goto done;
3180 		if (keyword_idstr != NULL) {
3181 			free(commit_id_str);
3182 			commit_id_str = keyword_idstr;
3183 		}
3184 
3185 		error = got_repo_match_object_id(&commit_id, NULL,
3186 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3187 		got_ref_list_free(&refs);
3188 		if (error)
3189 			goto done;
3190 		error = check_linear_ancestry(commit_id,
3191 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3192 		if (error != NULL) {
3193 			if (error->code == GOT_ERR_ANCESTRY) {
3194 				error = checkout_ancestry_error(
3195 				    head_ref, commit_id_str);
3196 			}
3197 			goto done;
3198 		}
3199 		error = check_same_branch(commit_id, head_ref, repo);
3200 		if (error) {
3201 			if (error->code == GOT_ERR_ANCESTRY) {
3202 				error = checkout_ancestry_error(
3203 				    head_ref, commit_id_str);
3204 			}
3205 			goto done;
3206 		}
3207 		error = got_worktree_set_base_commit_id(worktree, repo,
3208 		    commit_id);
3209 		if (error)
3210 			goto done;
3211 		/* Expand potentially abbreviated commit ID string. */
3212 		free(commit_id_str);
3213 		error = got_object_id_str(&commit_id_str, commit_id);
3214 		if (error)
3215 			goto done;
3216 	} else {
3217 		commit_id = got_object_id_dup(
3218 		    got_worktree_get_base_commit_id(worktree));
3219 		if (commit_id == NULL) {
3220 			error = got_error_from_errno("got_object_id_dup");
3221 			goto done;
3222 		}
3223 		error = got_object_id_str(&commit_id_str, commit_id);
3224 		if (error)
3225 			goto done;
3226 	}
3227 
3228 	error = got_pathlist_append(&paths, "", NULL);
3229 	if (error)
3230 		goto done;
3231 	cpa.worktree_path = worktree_path;
3232 	cpa.had_base_commit_ref_error = 0;
3233 	cpa.verbosity = verbosity;
3234 	error = got_worktree_checkout_files(worktree, &paths, repo,
3235 	    checkout_progress, &cpa, check_cancelled, NULL);
3236 	if (error != NULL)
3237 		goto done;
3238 
3239 	if (got_ref_is_symbolic(head_ref)) {
3240 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3241 		if (error)
3242 			goto done;
3243 		refname = got_ref_get_name(ref);
3244 	} else
3245 		refname = got_ref_get_name(head_ref);
3246 	printf("Checked out %s: %s\n", refname, commit_id_str);
3247 	printf("Now shut up and hack\n");
3248 	if (cpa.had_base_commit_ref_error)
3249 		show_worktree_base_ref_warning();
3250 done:
3251 	if (pack_fds) {
3252 		const struct got_error *pack_err =
3253 		    got_repo_pack_fds_close(pack_fds);
3254 		if (error == NULL)
3255 			error = pack_err;
3256 	}
3257 	if (head_ref)
3258 		got_ref_close(head_ref);
3259 	if (ref)
3260 		got_ref_close(ref);
3261 	if (repo) {
3262 		close_err = got_repo_close(repo);
3263 		if (error == NULL)
3264 			error = close_err;
3265 	}
3266 	if (worktree != NULL) {
3267 		close_err = got_worktree_close(worktree);
3268 		if (error == NULL)
3269 			error = close_err;
3270 	}
3271 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
3272 	free(commit_id_str);
3273 	free(commit_id);
3274 	free(repo_path);
3275 	free(worktree_path);
3276 	free(cwd);
3277 	return error;
3278 }
3279 
3280 struct got_update_progress_arg {
3281 	int did_something;
3282 	int conflicts;
3283 	int obstructed;
3284 	int not_updated;
3285 	int missing;
3286 	int not_deleted;
3287 	int unversioned;
3288 	int verbosity;
3289 };
3290 
3291 static void
3292 print_update_progress_stats(struct got_update_progress_arg *upa)
3293 {
3294 	if (!upa->did_something)
3295 		return;
3296 
3297 	if (upa->conflicts > 0)
3298 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3299 	if (upa->obstructed > 0)
3300 		printf("File paths obstructed by a non-regular file: %d\n",
3301 		    upa->obstructed);
3302 	if (upa->not_updated > 0)
3303 		printf("Files not updated because of existing merge "
3304 		    "conflicts: %d\n", upa->not_updated);
3305 }
3306 
3307 /*
3308  * The meaning of some status codes differs between merge-style operations and
3309  * update operations. For example, the ! status code means "file was missing"
3310  * if changes were merged into the work tree, and "missing file was restored"
3311  * if the work tree was updated. This function should be used by any operation
3312  * which merges changes into the work tree without updating the work tree.
3313  */
3314 static void
3315 print_merge_progress_stats(struct got_update_progress_arg *upa)
3316 {
3317 	if (!upa->did_something)
3318 		return;
3319 
3320 	if (upa->conflicts > 0)
3321 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3322 	if (upa->obstructed > 0)
3323 		printf("File paths obstructed by a non-regular file: %d\n",
3324 		    upa->obstructed);
3325 	if (upa->missing > 0)
3326 		printf("Files which had incoming changes but could not be "
3327 		    "found in the work tree: %d\n", upa->missing);
3328 	if (upa->not_deleted > 0)
3329 		printf("Files not deleted due to differences in deleted "
3330 		    "content: %d\n", upa->not_deleted);
3331 	if (upa->unversioned > 0)
3332 		printf("Files not merged because an unversioned file was "
3333 		    "found in the work tree: %d\n", upa->unversioned);
3334 }
3335 
3336 __dead static void
3337 usage_update(void)
3338 {
3339 	fprintf(stderr, "usage: %s update [-q] [-b branch] [-c commit] "
3340 	    "[path ...]\n", getprogname());
3341 	exit(1);
3342 }
3343 
3344 static const struct got_error *
3345 update_progress(void *arg, unsigned char status, const char *path)
3346 {
3347 	struct got_update_progress_arg *upa = arg;
3348 
3349 	if (status == GOT_STATUS_EXISTS ||
3350 	    status == GOT_STATUS_BASE_REF_ERR)
3351 		return NULL;
3352 
3353 	upa->did_something = 1;
3354 
3355 	/* Base commit bump happens silently. */
3356 	if (status == GOT_STATUS_BUMP_BASE)
3357 		return NULL;
3358 
3359 	if (status == GOT_STATUS_CONFLICT)
3360 		upa->conflicts++;
3361 	if (status == GOT_STATUS_OBSTRUCTED)
3362 		upa->obstructed++;
3363 	if (status == GOT_STATUS_CANNOT_UPDATE)
3364 		upa->not_updated++;
3365 	if (status == GOT_STATUS_MISSING)
3366 		upa->missing++;
3367 	if (status == GOT_STATUS_CANNOT_DELETE)
3368 		upa->not_deleted++;
3369 	if (status == GOT_STATUS_UNVERSIONED)
3370 		upa->unversioned++;
3371 
3372 	while (path[0] == '/')
3373 		path++;
3374 	if (upa->verbosity >= 0)
3375 		printf("%c  %s\n", status, path);
3376 
3377 	return NULL;
3378 }
3379 
3380 static const struct got_error *
3381 switch_head_ref(struct got_reference *head_ref,
3382     struct got_object_id *commit_id, struct got_worktree *worktree,
3383     struct got_repository *repo)
3384 {
3385 	const struct got_error *err = NULL;
3386 	char *base_id_str;
3387 	int ref_has_moved = 0;
3388 
3389 	/* Trivial case: switching between two different references. */
3390 	if (strcmp(got_ref_get_name(head_ref),
3391 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3392 		printf("Switching work tree from %s to %s\n",
3393 		    got_worktree_get_head_ref_name(worktree),
3394 		    got_ref_get_name(head_ref));
3395 		return got_worktree_set_head_ref(worktree, head_ref);
3396 	}
3397 
3398 	err = check_linear_ancestry(commit_id,
3399 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3400 	if (err) {
3401 		if (err->code != GOT_ERR_ANCESTRY)
3402 			return err;
3403 		ref_has_moved = 1;
3404 	}
3405 	if (!ref_has_moved)
3406 		return NULL;
3407 
3408 	/* Switching to a rebased branch with the same reference name. */
3409 	err = got_object_id_str(&base_id_str,
3410 	    got_worktree_get_base_commit_id(worktree));
3411 	if (err)
3412 		return err;
3413 	printf("Reference %s now points at a different branch\n",
3414 	    got_worktree_get_head_ref_name(worktree));
3415 	printf("Switching work tree from %s to %s\n", base_id_str,
3416 	    got_worktree_get_head_ref_name(worktree));
3417 	return NULL;
3418 }
3419 
3420 static const struct got_error *
3421 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3422 {
3423 	const struct got_error *err;
3424 	int in_progress;
3425 
3426 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3427 	if (err)
3428 		return err;
3429 	if (in_progress)
3430 		return got_error(GOT_ERR_REBASING);
3431 
3432 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3433 	if (err)
3434 		return err;
3435 	if (in_progress)
3436 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3437 
3438 	return NULL;
3439 }
3440 
3441 static const struct got_error *
3442 check_merge_in_progress(struct got_worktree *worktree,
3443     struct got_repository *repo)
3444 {
3445 	const struct got_error *err;
3446 	int in_progress;
3447 
3448 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3449 	if (err)
3450 		return err;
3451 	if (in_progress)
3452 		return got_error(GOT_ERR_MERGE_BUSY);
3453 
3454 	return NULL;
3455 }
3456 
3457 static const struct got_error *
3458 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3459     char *argv[], struct got_worktree *worktree)
3460 {
3461 	const struct got_error *err = NULL;
3462 	char *path;
3463 	struct got_pathlist_entry *new;
3464 	int i;
3465 
3466 	if (argc == 0) {
3467 		path = strdup("");
3468 		if (path == NULL)
3469 			return got_error_from_errno("strdup");
3470 		return got_pathlist_append(paths, path, NULL);
3471 	}
3472 
3473 	for (i = 0; i < argc; i++) {
3474 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3475 		if (err)
3476 			break;
3477 		err = got_pathlist_insert(&new, paths, path, NULL);
3478 		if (err || new == NULL /* duplicate */) {
3479 			free(path);
3480 			if (err)
3481 				break;
3482 		}
3483 	}
3484 
3485 	return err;
3486 }
3487 
3488 static const struct got_error *
3489 wrap_not_worktree_error(const struct got_error *orig_err,
3490     const char *cmdname, const char *path)
3491 {
3492 	const struct got_error *err;
3493 	struct got_repository *repo;
3494 	static char msg[512];
3495 	int *pack_fds = NULL;
3496 
3497 	err = got_repo_pack_fds_open(&pack_fds);
3498 	if (err)
3499 		return err;
3500 
3501 	err = got_repo_open(&repo, path, NULL, pack_fds);
3502 	if (err)
3503 		return orig_err;
3504 
3505 	snprintf(msg, sizeof(msg),
3506 	    "'got %s' needs a work tree in addition to a git repository\n"
3507 	    "Work trees can be checked out from this Git repository with "
3508 	    "'got checkout'.\n"
3509 	    "The got(1) manual page contains more information.", cmdname);
3510 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3511 	if (repo) {
3512 		const struct got_error *close_err = got_repo_close(repo);
3513 		if (err == NULL)
3514 			err = close_err;
3515 	}
3516 	if (pack_fds) {
3517 		const struct got_error *pack_err =
3518 		    got_repo_pack_fds_close(pack_fds);
3519 		if (err == NULL)
3520 			err = pack_err;
3521 	}
3522 	return err;
3523 }
3524 
3525 static const struct got_error *
3526 cmd_update(int argc, char *argv[])
3527 {
3528 	const struct got_error *close_err, *error = NULL;
3529 	struct got_repository *repo = NULL;
3530 	struct got_worktree *worktree = NULL;
3531 	char *worktree_path = NULL;
3532 	struct got_object_id *commit_id = NULL;
3533 	char *commit_id_str = NULL;
3534 	const char *branch_name = NULL;
3535 	struct got_reference *head_ref = NULL;
3536 	struct got_pathlist_head paths;
3537 	struct got_pathlist_entry *pe;
3538 	int ch, verbosity = 0;
3539 	struct got_update_progress_arg upa;
3540 	int *pack_fds = NULL;
3541 
3542 	TAILQ_INIT(&paths);
3543 
3544 #ifndef PROFILE
3545 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3546 	    "unveil", NULL) == -1)
3547 		err(1, "pledge");
3548 #endif
3549 
3550 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3551 		switch (ch) {
3552 		case 'b':
3553 			branch_name = optarg;
3554 			break;
3555 		case 'c':
3556 			commit_id_str = strdup(optarg);
3557 			if (commit_id_str == NULL)
3558 				return got_error_from_errno("strdup");
3559 			break;
3560 		case 'q':
3561 			verbosity = -1;
3562 			break;
3563 		default:
3564 			usage_update();
3565 			/* NOTREACHED */
3566 		}
3567 	}
3568 
3569 	argc -= optind;
3570 	argv += optind;
3571 
3572 	worktree_path = getcwd(NULL, 0);
3573 	if (worktree_path == NULL) {
3574 		error = got_error_from_errno("getcwd");
3575 		goto done;
3576 	}
3577 
3578 	error = got_repo_pack_fds_open(&pack_fds);
3579 	if (error != NULL)
3580 		goto done;
3581 
3582 	error = got_worktree_open(&worktree, worktree_path,
3583 	    GOT_WORKTREE_GOT_DIR);
3584 	if (error) {
3585 		if (error->code == GOT_ERR_NOT_WORKTREE)
3586 			error = wrap_not_worktree_error(error, "update",
3587 			    worktree_path);
3588 		goto done;
3589 	}
3590 
3591 	error = check_rebase_or_histedit_in_progress(worktree);
3592 	if (error)
3593 		goto done;
3594 
3595 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3596 	    NULL, pack_fds);
3597 	if (error != NULL)
3598 		goto done;
3599 
3600 	error = apply_unveil(got_repo_get_path(repo), 0,
3601 	    got_worktree_get_root_path(worktree));
3602 	if (error)
3603 		goto done;
3604 
3605 	error = check_merge_in_progress(worktree, repo);
3606 	if (error)
3607 		goto done;
3608 
3609 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3610 	if (error)
3611 		goto done;
3612 
3613 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3614 	    got_worktree_get_head_ref_name(worktree), 0);
3615 	if (error != NULL)
3616 		goto done;
3617 	if (commit_id_str == NULL) {
3618 		error = got_ref_resolve(&commit_id, repo, head_ref);
3619 		if (error != NULL)
3620 			goto done;
3621 		error = got_object_id_str(&commit_id_str, commit_id);
3622 		if (error != NULL)
3623 			goto done;
3624 	} else {
3625 		struct got_reflist_head refs;
3626 		char *keyword_idstr = NULL;
3627 
3628 		TAILQ_INIT(&refs);
3629 
3630 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3631 		    NULL);
3632 		if (error)
3633 			goto done;
3634 
3635 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
3636 		    repo, worktree);
3637 		if (error != NULL)
3638 			goto done;
3639 		if (keyword_idstr != NULL) {
3640 			free(commit_id_str);
3641 			commit_id_str = keyword_idstr;
3642 		}
3643 
3644 		error = got_repo_match_object_id(&commit_id, NULL,
3645 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3646 		got_ref_list_free(&refs);
3647 		free(commit_id_str);
3648 		commit_id_str = NULL;
3649 		if (error)
3650 			goto done;
3651 		error = got_object_id_str(&commit_id_str, commit_id);
3652 		if (error)
3653 			goto done;
3654 	}
3655 
3656 	if (branch_name) {
3657 		struct got_object_id *head_commit_id;
3658 		TAILQ_FOREACH(pe, &paths, entry) {
3659 			if (pe->path_len == 0)
3660 				continue;
3661 			error = got_error_msg(GOT_ERR_BAD_PATH,
3662 			    "switching between branches requires that "
3663 			    "the entire work tree gets updated");
3664 			goto done;
3665 		}
3666 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3667 		if (error)
3668 			goto done;
3669 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3670 		    repo);
3671 		free(head_commit_id);
3672 		if (error != NULL)
3673 			goto done;
3674 		error = check_same_branch(commit_id, head_ref, repo);
3675 		if (error)
3676 			goto done;
3677 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3678 		if (error)
3679 			goto done;
3680 	} else {
3681 		error = check_linear_ancestry(commit_id,
3682 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3683 		if (error != NULL) {
3684 			if (error->code == GOT_ERR_ANCESTRY)
3685 				error = got_error(GOT_ERR_BRANCH_MOVED);
3686 			goto done;
3687 		}
3688 		error = check_same_branch(commit_id, head_ref, repo);
3689 		if (error)
3690 			goto done;
3691 	}
3692 
3693 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3694 	    commit_id) != 0) {
3695 		error = got_worktree_set_base_commit_id(worktree, repo,
3696 		    commit_id);
3697 		if (error)
3698 			goto done;
3699 	}
3700 
3701 	memset(&upa, 0, sizeof(upa));
3702 	upa.verbosity = verbosity;
3703 	error = got_worktree_checkout_files(worktree, &paths, repo,
3704 	    update_progress, &upa, check_cancelled, NULL);
3705 	if (error != NULL)
3706 		goto done;
3707 
3708 	if (upa.did_something) {
3709 		printf("Updated to %s: %s\n",
3710 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3711 	} else
3712 		printf("Already up-to-date\n");
3713 
3714 	print_update_progress_stats(&upa);
3715 done:
3716 	if (pack_fds) {
3717 		const struct got_error *pack_err =
3718 		    got_repo_pack_fds_close(pack_fds);
3719 		if (error == NULL)
3720 			error = pack_err;
3721 	}
3722 	if (repo) {
3723 		close_err = got_repo_close(repo);
3724 		if (error == NULL)
3725 			error = close_err;
3726 	}
3727 	if (worktree != NULL) {
3728 		close_err = got_worktree_close(worktree);
3729 		if (error == NULL)
3730 			error = close_err;
3731 	}
3732 	if (head_ref != NULL)
3733 		got_ref_close(head_ref);
3734 	free(worktree_path);
3735 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
3736 	free(commit_id);
3737 	free(commit_id_str);
3738 	return error;
3739 }
3740 
3741 static const struct got_error *
3742 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3743     const char *path, int diff_context, int ignore_whitespace,
3744     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3745     struct got_repository *repo, FILE *outfile)
3746 {
3747 	const struct got_error *err = NULL;
3748 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3749 	FILE *f1 = NULL, *f2 = NULL;
3750 	int fd1 = -1, fd2 = -1;
3751 
3752 	fd1 = got_opentempfd();
3753 	if (fd1 == -1)
3754 		return got_error_from_errno("got_opentempfd");
3755 	fd2 = got_opentempfd();
3756 	if (fd2 == -1) {
3757 		err = got_error_from_errno("got_opentempfd");
3758 		goto done;
3759 	}
3760 
3761 	if (blob_id1) {
3762 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3763 		    fd1);
3764 		if (err)
3765 			goto done;
3766 	}
3767 
3768 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3769 	if (err)
3770 		goto done;
3771 
3772 	f1 = got_opentemp();
3773 	if (f1 == NULL) {
3774 		err = got_error_from_errno("got_opentemp");
3775 		goto done;
3776 	}
3777 	f2 = got_opentemp();
3778 	if (f2 == NULL) {
3779 		err = got_error_from_errno("got_opentemp");
3780 		goto done;
3781 	}
3782 
3783 	while (path[0] == '/')
3784 		path++;
3785 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3786 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3787 	    force_text_diff, dsa, outfile);
3788 done:
3789 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3790 		err = got_error_from_errno("close");
3791 	if (blob1)
3792 		got_object_blob_close(blob1);
3793 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3794 		err = got_error_from_errno("close");
3795 	if (blob2)
3796 		got_object_blob_close(blob2);
3797 	if (f1 && fclose(f1) == EOF && err == NULL)
3798 		err = got_error_from_errno("fclose");
3799 	if (f2 && fclose(f2) == EOF && err == NULL)
3800 		err = got_error_from_errno("fclose");
3801 	return err;
3802 }
3803 
3804 static const struct got_error *
3805 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3806     const char *path, int diff_context, int ignore_whitespace,
3807     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3808     struct got_repository *repo, FILE *outfile)
3809 {
3810 	const struct got_error *err = NULL;
3811 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3812 	struct got_diff_blob_output_unidiff_arg arg;
3813 	FILE *f1 = NULL, *f2 = NULL;
3814 	int fd1 = -1, fd2 = -1;
3815 
3816 	if (tree_id1) {
3817 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3818 		if (err)
3819 			goto done;
3820 		fd1 = got_opentempfd();
3821 		if (fd1 == -1) {
3822 			err = got_error_from_errno("got_opentempfd");
3823 			goto done;
3824 		}
3825 	}
3826 
3827 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3828 	if (err)
3829 		goto done;
3830 
3831 	f1 = got_opentemp();
3832 	if (f1 == NULL) {
3833 		err = got_error_from_errno("got_opentemp");
3834 		goto done;
3835 	}
3836 
3837 	f2 = got_opentemp();
3838 	if (f2 == NULL) {
3839 		err = got_error_from_errno("got_opentemp");
3840 		goto done;
3841 	}
3842 	fd2 = got_opentempfd();
3843 	if (fd2 == -1) {
3844 		err = got_error_from_errno("got_opentempfd");
3845 		goto done;
3846 	}
3847 	arg.diff_context = diff_context;
3848 	arg.ignore_whitespace = ignore_whitespace;
3849 	arg.force_text_diff = force_text_diff;
3850 	arg.diffstat = dsa;
3851 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3852 	arg.outfile = outfile;
3853 	arg.lines = NULL;
3854 	arg.nlines = 0;
3855 	while (path[0] == '/')
3856 		path++;
3857 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3858 	    got_diff_blob_output_unidiff, &arg, 1);
3859 done:
3860 	if (tree1)
3861 		got_object_tree_close(tree1);
3862 	if (tree2)
3863 		got_object_tree_close(tree2);
3864 	if (f1 && fclose(f1) == EOF && err == NULL)
3865 		err = got_error_from_errno("fclose");
3866 	if (f2 && fclose(f2) == EOF && err == NULL)
3867 		err = got_error_from_errno("fclose");
3868 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3869 		err = got_error_from_errno("close");
3870 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3871 		err = got_error_from_errno("close");
3872 	return err;
3873 }
3874 
3875 static const struct got_error *
3876 get_changed_paths(struct got_pathlist_head *paths,
3877     struct got_commit_object *commit, struct got_repository *repo,
3878     struct got_diffstat_cb_arg *dsa)
3879 {
3880 	const struct got_error *err = NULL;
3881 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3882 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3883 	struct got_object_qid *qid;
3884 	got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
3885 	FILE *f1 = NULL, *f2 = NULL;
3886 	int fd1 = -1, fd2 = -1;
3887 
3888 	if (dsa) {
3889 		cb = got_diff_tree_compute_diffstat;
3890 
3891 		f1 = got_opentemp();
3892 		if (f1 == NULL) {
3893 			err = got_error_from_errno("got_opentemp");
3894 			goto done;
3895 		}
3896 		f2 = got_opentemp();
3897 		if (f2 == NULL) {
3898 			err = got_error_from_errno("got_opentemp");
3899 			goto done;
3900 		}
3901 		fd1 = got_opentempfd();
3902 		if (fd1 == -1) {
3903 			err = got_error_from_errno("got_opentempfd");
3904 			goto done;
3905 		}
3906 		fd2 = got_opentempfd();
3907 		if (fd2 == -1) {
3908 			err = got_error_from_errno("got_opentempfd");
3909 			goto done;
3910 		}
3911 	}
3912 
3913 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3914 	if (qid != NULL) {
3915 		struct got_commit_object *pcommit;
3916 		err = got_object_open_as_commit(&pcommit, repo,
3917 		    &qid->id);
3918 		if (err)
3919 			return err;
3920 
3921 		tree_id1 = got_object_id_dup(
3922 		    got_object_commit_get_tree_id(pcommit));
3923 		if (tree_id1 == NULL) {
3924 			got_object_commit_close(pcommit);
3925 			return got_error_from_errno("got_object_id_dup");
3926 		}
3927 		got_object_commit_close(pcommit);
3928 
3929 	}
3930 
3931 	if (tree_id1) {
3932 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3933 		if (err)
3934 			goto done;
3935 	}
3936 
3937 	tree_id2 = got_object_commit_get_tree_id(commit);
3938 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3939 	if (err)
3940 		goto done;
3941 
3942 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
3943 	    cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
3944 done:
3945 	if (tree1)
3946 		got_object_tree_close(tree1);
3947 	if (tree2)
3948 		got_object_tree_close(tree2);
3949 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3950 		err = got_error_from_errno("close");
3951 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3952 		err = got_error_from_errno("close");
3953 	if (f1 && fclose(f1) == EOF && err == NULL)
3954 		err = got_error_from_errno("fclose");
3955 	if (f2 && fclose(f2) == EOF && err == NULL)
3956 		err = got_error_from_errno("fclose");
3957 	free(tree_id1);
3958 	return err;
3959 }
3960 
3961 static const struct got_error *
3962 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3963     const char *path, int diff_context, struct got_diffstat_cb_arg *dsa,
3964     struct got_repository *repo, FILE *outfile)
3965 {
3966 	const struct got_error *err = NULL;
3967 	struct got_commit_object *pcommit = NULL;
3968 	char *id_str1 = NULL, *id_str2 = NULL;
3969 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3970 	struct got_object_qid *qid;
3971 
3972 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3973 	if (qid != NULL) {
3974 		err = got_object_open_as_commit(&pcommit, repo,
3975 		    &qid->id);
3976 		if (err)
3977 			return err;
3978 		err = got_object_id_str(&id_str1, &qid->id);
3979 		if (err)
3980 			goto done;
3981 	}
3982 
3983 	err = got_object_id_str(&id_str2, id);
3984 	if (err)
3985 		goto done;
3986 
3987 	if (path && path[0] != '\0') {
3988 		int obj_type;
3989 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3990 		if (err)
3991 			goto done;
3992 		if (pcommit) {
3993 			err = got_object_id_by_path(&obj_id1, repo,
3994 			    pcommit, path);
3995 			if (err) {
3996 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3997 					free(obj_id2);
3998 					goto done;
3999 				}
4000 			}
4001 		}
4002 		err = got_object_get_type(&obj_type, repo, obj_id2);
4003 		if (err) {
4004 			free(obj_id2);
4005 			goto done;
4006 		}
4007 		fprintf(outfile,
4008 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
4009 		fprintf(outfile, "commit - %s\n",
4010 		    id_str1 ? id_str1 : "/dev/null");
4011 		fprintf(outfile, "commit + %s\n", id_str2);
4012 		switch (obj_type) {
4013 		case GOT_OBJ_TYPE_BLOB:
4014 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
4015 			    0, 0, dsa, repo, outfile);
4016 			break;
4017 		case GOT_OBJ_TYPE_TREE:
4018 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
4019 			    0, 0, dsa, repo, outfile);
4020 			break;
4021 		default:
4022 			err = got_error(GOT_ERR_OBJ_TYPE);
4023 			break;
4024 		}
4025 		free(obj_id1);
4026 		free(obj_id2);
4027 	} else {
4028 		obj_id2 = got_object_commit_get_tree_id(commit);
4029 		if (pcommit)
4030 			obj_id1 = got_object_commit_get_tree_id(pcommit);
4031 		fprintf(outfile,
4032 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
4033 		fprintf(outfile, "commit - %s\n",
4034 		    id_str1 ? id_str1 : "/dev/null");
4035 		fprintf(outfile, "commit + %s\n", id_str2);
4036 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
4037 		    dsa, repo, outfile);
4038 	}
4039 done:
4040 	free(id_str1);
4041 	free(id_str2);
4042 	if (pcommit)
4043 		got_object_commit_close(pcommit);
4044 	return err;
4045 }
4046 
4047 static char *
4048 get_datestr(time_t *time, char *datebuf)
4049 {
4050 	struct tm mytm, *tm;
4051 	char *p, *s;
4052 
4053 	tm = gmtime_r(time, &mytm);
4054 	if (tm == NULL)
4055 		return NULL;
4056 	s = asctime_r(tm, datebuf);
4057 	if (s == NULL)
4058 		return NULL;
4059 	p = strchr(s, '\n');
4060 	if (p)
4061 		*p = '\0';
4062 	return s;
4063 }
4064 
4065 static const struct got_error *
4066 match_commit(int *have_match, struct got_object_id *id,
4067     struct got_commit_object *commit, regex_t *regex)
4068 {
4069 	const struct got_error *err = NULL;
4070 	regmatch_t regmatch;
4071 	char *id_str = NULL, *logmsg = NULL;
4072 
4073 	*have_match = 0;
4074 
4075 	err = got_object_id_str(&id_str, id);
4076 	if (err)
4077 		return err;
4078 
4079 	err = got_object_commit_get_logmsg(&logmsg, commit);
4080 	if (err)
4081 		goto done;
4082 
4083 	if (regexec(regex, got_object_commit_get_author(commit), 1,
4084 	    &regmatch, 0) == 0 ||
4085 	    regexec(regex, got_object_commit_get_committer(commit), 1,
4086 	    &regmatch, 0) == 0 ||
4087 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
4088 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
4089 		*have_match = 1;
4090 done:
4091 	free(id_str);
4092 	free(logmsg);
4093 	return err;
4094 }
4095 
4096 static void
4097 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
4098     regex_t *regex)
4099 {
4100 	regmatch_t regmatch;
4101 	struct got_pathlist_entry *pe;
4102 
4103 	*have_match = 0;
4104 
4105 	TAILQ_FOREACH(pe, changed_paths, entry) {
4106 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
4107 			*have_match = 1;
4108 			break;
4109 		}
4110 	}
4111 }
4112 
4113 static const struct got_error *
4114 match_patch(int *have_match, struct got_commit_object *commit,
4115     struct got_object_id *id, const char *path, int diff_context,
4116     struct got_repository *repo, regex_t *regex, FILE *f)
4117 {
4118 	const struct got_error *err = NULL;
4119 	char *line = NULL;
4120 	size_t linesize = 0;
4121 	regmatch_t regmatch;
4122 
4123 	*have_match = 0;
4124 
4125 	err = got_opentemp_truncate(f);
4126 	if (err)
4127 		return err;
4128 
4129 	err = print_patch(commit, id, path, diff_context, NULL, repo, f);
4130 	if (err)
4131 		goto done;
4132 
4133 	if (fseeko(f, 0L, SEEK_SET) == -1) {
4134 		err = got_error_from_errno("fseeko");
4135 		goto done;
4136 	}
4137 
4138 	while (getline(&line, &linesize, f) != -1) {
4139 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
4140 			*have_match = 1;
4141 			break;
4142 		}
4143 	}
4144 done:
4145 	free(line);
4146 	return err;
4147 }
4148 
4149 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
4150 
4151 static const struct got_error*
4152 build_refs_str(char **refs_str, struct got_reflist_head *refs,
4153     struct got_object_id *id, struct got_repository *repo,
4154     int local_only)
4155 {
4156 	static const struct got_error *err = NULL;
4157 	struct got_reflist_entry *re;
4158 	char *s;
4159 	const char *name;
4160 
4161 	*refs_str = NULL;
4162 
4163 	TAILQ_FOREACH(re, refs, entry) {
4164 		struct got_tag_object *tag = NULL;
4165 		struct got_object_id *ref_id;
4166 		int cmp;
4167 
4168 		name = got_ref_get_name(re->ref);
4169 		if (strcmp(name, GOT_REF_HEAD) == 0)
4170 			continue;
4171 		if (strncmp(name, "refs/", 5) == 0)
4172 			name += 5;
4173 		if (strncmp(name, "got/", 4) == 0)
4174 			continue;
4175 		if (strncmp(name, "heads/", 6) == 0)
4176 			name += 6;
4177 		if (strncmp(name, "remotes/", 8) == 0) {
4178 			if (local_only)
4179 				continue;
4180 			name += 8;
4181 			s = strstr(name, "/" GOT_REF_HEAD);
4182 			if (s != NULL && strcmp(s, "/" GOT_REF_HEAD) == 0)
4183 				continue;
4184 		}
4185 		err = got_ref_resolve(&ref_id, repo, re->ref);
4186 		if (err)
4187 			break;
4188 		if (strncmp(name, "tags/", 5) == 0) {
4189 			err = got_object_open_as_tag(&tag, repo, ref_id);
4190 			if (err) {
4191 				if (err->code != GOT_ERR_OBJ_TYPE) {
4192 					free(ref_id);
4193 					break;
4194 				}
4195 				/* Ref points at something other than a tag. */
4196 				err = NULL;
4197 				tag = NULL;
4198 			}
4199 		}
4200 		cmp = got_object_id_cmp(tag ?
4201 		    got_object_tag_get_object_id(tag) : ref_id, id);
4202 		free(ref_id);
4203 		if (tag)
4204 			got_object_tag_close(tag);
4205 		if (cmp != 0)
4206 			continue;
4207 		s = *refs_str;
4208 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
4209 		    s ? ", " : "", name) == -1) {
4210 			err = got_error_from_errno("asprintf");
4211 			free(s);
4212 			*refs_str = NULL;
4213 			break;
4214 		}
4215 		free(s);
4216 	}
4217 
4218 	return err;
4219 }
4220 
4221 static const struct got_error *
4222 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
4223     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
4224 {
4225 	const struct got_error *err = NULL;
4226 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
4227 	char *comma, *s, *nl;
4228 	struct got_reflist_head *refs;
4229 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
4230 	struct tm tm;
4231 	time_t committer_time;
4232 
4233 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4234 	if (refs) {
4235 		err = build_refs_str(&ref_str, refs, id, repo, 1);
4236 		if (err)
4237 			return err;
4238 
4239 		/* Display the first matching ref only. */
4240 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
4241 			*comma = '\0';
4242 	}
4243 
4244 	if (ref_str == NULL) {
4245 		err = got_object_id_str(&id_str, id);
4246 		if (err)
4247 			return err;
4248 	}
4249 
4250 	committer_time = got_object_commit_get_committer_time(commit);
4251 	if (gmtime_r(&committer_time, &tm) == NULL) {
4252 		err = got_error_from_errno("gmtime_r");
4253 		goto done;
4254 	}
4255 	if (strftime(datebuf, sizeof(datebuf), "%F ", &tm) == 0) {
4256 		err = got_error(GOT_ERR_NO_SPACE);
4257 		goto done;
4258 	}
4259 
4260 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4261 	if (err)
4262 		goto done;
4263 
4264 	s = logmsg0;
4265 	while (isspace((unsigned char)s[0]))
4266 		s++;
4267 
4268 	nl = strchr(s, '\n');
4269 	if (nl) {
4270 		*nl = '\0';
4271 	}
4272 
4273 	if (ref_str)
4274 		printf("%s%-7s %s\n", datebuf, ref_str, s);
4275 	else
4276 		printf("%s%.7s %s\n", datebuf, id_str, s);
4277 
4278 	if (fflush(stdout) != 0 && err == NULL)
4279 		err = got_error_from_errno("fflush");
4280 done:
4281 	free(id_str);
4282 	free(ref_str);
4283 	free(logmsg0);
4284 	return err;
4285 }
4286 
4287 static const struct got_error *
4288 print_diffstat(struct got_diffstat_cb_arg *dsa, const char *header)
4289 {
4290 	struct got_pathlist_entry *pe;
4291 
4292 	if (header != NULL)
4293 		printf("%s\n", header);
4294 
4295 	TAILQ_FOREACH(pe, dsa->paths, entry) {
4296 		struct got_diff_changed_path *cp = pe->data;
4297 		int pad = dsa->max_path_len - pe->path_len + 1;
4298 
4299 		printf(" %c  %s%*c | %*d+ %*d-\n", cp->status, pe->path, pad,
4300 		    ' ', dsa->add_cols + 1, cp->add, dsa->rm_cols + 1, cp->rm);
4301 	}
4302 	printf("\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
4303 	    dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
4304 	    dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
4305 
4306 	if (fflush(stdout) != 0)
4307 		return got_error_from_errno("fflush");
4308 
4309 	return NULL;
4310 }
4311 
4312 static const struct got_error *
4313 printfile(FILE *f)
4314 {
4315 	char	buf[8192];
4316 	size_t	r;
4317 
4318 	if (fseeko(f, 0L, SEEK_SET) == -1)
4319 		return got_error_from_errno("fseek");
4320 
4321 	for (;;) {
4322 		r = fread(buf, 1, sizeof(buf), f);
4323 		if (r == 0) {
4324 			if (ferror(f))
4325 				return got_error_from_errno("fread");
4326 			if (feof(f))
4327 				break;
4328 		}
4329 		if (fwrite(buf, 1, r, stdout) != r)
4330 			return got_ferror(stdout, GOT_ERR_IO);
4331 	}
4332 
4333 	return NULL;
4334 }
4335 
4336 static const struct got_error *
4337 print_commit(struct got_commit_object *commit, struct got_object_id *id,
4338     struct got_repository *repo, const char *path,
4339     struct got_pathlist_head *changed_paths,
4340     struct got_diffstat_cb_arg *diffstat, int show_patch, int diff_context,
4341     struct got_reflist_object_id_map *refs_idmap, const char *custom_refs_str,
4342     const char *prefix)
4343 {
4344 	const struct got_error *err = NULL;
4345 	FILE *f = NULL;
4346 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
4347 	char datebuf[26];
4348 	time_t committer_time;
4349 	const char *author, *committer;
4350 	char *refs_str = NULL;
4351 
4352 	err = got_object_id_str(&id_str, id);
4353 	if (err)
4354 		return err;
4355 
4356 	if (custom_refs_str == NULL) {
4357 		struct got_reflist_head *refs;
4358 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4359 		if (refs) {
4360 			err = build_refs_str(&refs_str, refs, id, repo, 0);
4361 			if (err)
4362 				goto done;
4363 		}
4364 	}
4365 
4366 	printf(GOT_COMMIT_SEP_STR);
4367 	if (custom_refs_str)
4368 		printf("%s %s (%s)\n", prefix ? prefix : "commit", id_str,
4369 		    custom_refs_str);
4370 	else
4371 		printf("%s %s%s%s%s\n", prefix ? prefix : "commit", id_str,
4372 		    refs_str ? " (" : "", refs_str ? refs_str : "",
4373 		    refs_str ? ")" : "");
4374 	free(id_str);
4375 	id_str = NULL;
4376 	free(refs_str);
4377 	refs_str = NULL;
4378 	printf("from: %s\n", got_object_commit_get_author(commit));
4379 	author = got_object_commit_get_author(commit);
4380 	committer = got_object_commit_get_committer(commit);
4381 	if (strcmp(author, committer) != 0)
4382 		printf("via: %s\n", committer);
4383 	committer_time = got_object_commit_get_committer_time(commit);
4384 	datestr = get_datestr(&committer_time, datebuf);
4385 	if (datestr)
4386 		printf("date: %s UTC\n", datestr);
4387 	if (got_object_commit_get_nparents(commit) > 1) {
4388 		const struct got_object_id_queue *parent_ids;
4389 		struct got_object_qid *qid;
4390 		int n = 1;
4391 		parent_ids = got_object_commit_get_parent_ids(commit);
4392 		STAILQ_FOREACH(qid, parent_ids, entry) {
4393 			err = got_object_id_str(&id_str, &qid->id);
4394 			if (err)
4395 				goto done;
4396 			printf("parent %d: %s\n", n++, id_str);
4397 			free(id_str);
4398 			id_str = NULL;
4399 		}
4400 	}
4401 
4402 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4403 	if (err)
4404 		goto done;
4405 
4406 	logmsg = logmsg0;
4407 	do {
4408 		line = strsep(&logmsg, "\n");
4409 		if (line)
4410 			printf(" %s\n", line);
4411 	} while (line);
4412 	free(logmsg0);
4413 
4414 	if (changed_paths && diffstat == NULL) {
4415 		struct got_pathlist_entry *pe;
4416 
4417 		TAILQ_FOREACH(pe, changed_paths, entry) {
4418 			struct got_diff_changed_path *cp = pe->data;
4419 
4420 			printf(" %c  %s\n", cp->status, pe->path);
4421 		}
4422 		printf("\n");
4423 	}
4424 	if (show_patch) {
4425 		if (diffstat) {
4426 			f = got_opentemp();
4427 			if (f == NULL) {
4428 				err = got_error_from_errno("got_opentemp");
4429 				goto done;
4430 			}
4431 		}
4432 
4433 		err = print_patch(commit, id, path, diff_context, diffstat,
4434 		    repo, diffstat == NULL ? stdout : f);
4435 		if (err)
4436 			goto done;
4437 	}
4438 	if (diffstat) {
4439 		err = print_diffstat(diffstat, NULL);
4440 		if (err)
4441 			goto done;
4442 		if (show_patch) {
4443 			err = printfile(f);
4444 			if (err)
4445 				goto done;
4446 		}
4447 	}
4448 	if (show_patch)
4449 		printf("\n");
4450 
4451 	if (fflush(stdout) != 0 && err == NULL)
4452 		err = got_error_from_errno("fflush");
4453 done:
4454 	if (f && fclose(f) == EOF && err == NULL)
4455 		err = got_error_from_errno("fclose");
4456 	free(id_str);
4457 	free(refs_str);
4458 	return err;
4459 }
4460 
4461 static const struct got_error *
4462 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
4463     struct got_repository *repo, const char *path, int show_changed_paths,
4464     int show_diffstat, int show_patch, const char *search_pattern,
4465     int diff_context, int limit, int log_branches, int reverse_display_order,
4466     struct got_reflist_object_id_map *refs_idmap, int one_line, int toposort,
4467     FILE *tmpfile)
4468 {
4469 	const struct got_error *err;
4470 	struct got_commit_graph *graph;
4471 	regex_t regex;
4472 	int have_match;
4473 	struct got_object_id_queue reversed_commits;
4474 	struct got_object_qid *qid;
4475 	struct got_commit_object *commit;
4476 	struct got_pathlist_head changed_paths;
4477 
4478 	STAILQ_INIT(&reversed_commits);
4479 	TAILQ_INIT(&changed_paths);
4480 
4481 	if (search_pattern && regcomp(&regex, search_pattern,
4482 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
4483 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
4484 
4485 	err = got_commit_graph_open(&graph, path, !log_branches);
4486 	if (err)
4487 		return err;
4488 	if (log_branches && toposort) {
4489 		err = got_commit_graph_toposort(graph, root_id, repo,
4490 		    check_cancelled, NULL);
4491 	} else {
4492 		err = got_commit_graph_bfsort(graph, root_id, repo,
4493 		    check_cancelled, NULL);
4494 	}
4495 	if (err)
4496 		goto done;
4497 	for (;;) {
4498 		struct got_object_id id;
4499 		struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4500 		    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4501 
4502 		if (sigint_received || sigpipe_received)
4503 			break;
4504 
4505 		err = got_commit_graph_iter_next(&id, graph, repo,
4506 		    check_cancelled, NULL);
4507 		if (err) {
4508 			if (err->code == GOT_ERR_ITER_COMPLETED)
4509 				err = NULL;
4510 			break;
4511 		}
4512 
4513 		err = got_object_open_as_commit(&commit, repo, &id);
4514 		if (err)
4515 			break;
4516 
4517 		if (((show_changed_paths && !show_diffstat) ||
4518 		    (show_diffstat && !show_patch))
4519 		    && !reverse_display_order) {
4520 			err = get_changed_paths(&changed_paths, commit, repo,
4521 			    show_diffstat ? &dsa : NULL);
4522 			if (err)
4523 				break;
4524 		}
4525 
4526 		if (search_pattern) {
4527 			err = match_commit(&have_match, &id, commit, &regex);
4528 			if (err) {
4529 				got_object_commit_close(commit);
4530 				break;
4531 			}
4532 			if (have_match == 0 && show_changed_paths)
4533 				match_changed_paths(&have_match,
4534 				    &changed_paths, &regex);
4535 			if (have_match == 0 && show_patch) {
4536 				err = match_patch(&have_match, commit, &id,
4537 				    path, diff_context, repo, &regex, tmpfile);
4538 				if (err)
4539 					break;
4540 			}
4541 			if (have_match == 0) {
4542 				got_object_commit_close(commit);
4543 				got_pathlist_free(&changed_paths,
4544 				    GOT_PATHLIST_FREE_ALL);
4545 				continue;
4546 			}
4547 		}
4548 
4549 		if (reverse_display_order) {
4550 			err = got_object_qid_alloc(&qid, &id);
4551 			if (err)
4552 				break;
4553 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
4554 			got_object_commit_close(commit);
4555 		} else {
4556 			if (one_line)
4557 				err = print_commit_oneline(commit, &id,
4558 				    repo, refs_idmap);
4559 			else
4560 				err = print_commit(commit, &id, repo, path,
4561 				    (show_changed_paths || show_diffstat) ?
4562 				    &changed_paths : NULL,
4563 				    show_diffstat ? &dsa : NULL, show_patch,
4564 				    diff_context, refs_idmap, NULL, NULL);
4565 			got_object_commit_close(commit);
4566 			if (err)
4567 				break;
4568 		}
4569 		if ((limit && --limit == 0) ||
4570 		    (end_id && got_object_id_cmp(&id, end_id) == 0))
4571 			break;
4572 
4573 		got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4574 	}
4575 	if (reverse_display_order) {
4576 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4577 			struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4578 			    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4579 
4580 			err = got_object_open_as_commit(&commit, repo,
4581 			    &qid->id);
4582 			if (err)
4583 				break;
4584 			if ((show_changed_paths && !show_diffstat) ||
4585 			    (show_diffstat && !show_patch)) {
4586 				err = get_changed_paths(&changed_paths, commit,
4587 				    repo, show_diffstat ? &dsa : NULL);
4588 				if (err)
4589 					break;
4590 			}
4591 			if (one_line)
4592 				err = print_commit_oneline(commit, &qid->id,
4593 				    repo, refs_idmap);
4594 			else
4595 				err = print_commit(commit, &qid->id, repo, path,
4596 				    (show_changed_paths || show_diffstat) ?
4597 				    &changed_paths : NULL,
4598 				    show_diffstat ? &dsa : NULL, show_patch,
4599 				    diff_context, refs_idmap, NULL, NULL);
4600 			got_object_commit_close(commit);
4601 			if (err)
4602 				break;
4603 			got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4604 		}
4605 	}
4606 done:
4607 	while (!STAILQ_EMPTY(&reversed_commits)) {
4608 		qid = STAILQ_FIRST(&reversed_commits);
4609 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4610 		got_object_qid_free(qid);
4611 	}
4612 	got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4613 	if (search_pattern)
4614 		regfree(&regex);
4615 	got_commit_graph_close(graph);
4616 	return err;
4617 }
4618 
4619 __dead static void
4620 usage_log(void)
4621 {
4622 	fprintf(stderr, "usage: %s log [-bdPpRst] [-C number] [-c commit] "
4623 	    "[-l N] [-r repository-path] [-S search-pattern] [-x commit] "
4624 	    "[path]\n", getprogname());
4625 	exit(1);
4626 }
4627 
4628 static int
4629 get_default_log_limit(void)
4630 {
4631 	const char *got_default_log_limit;
4632 	long long n;
4633 	const char *errstr;
4634 
4635 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4636 	if (got_default_log_limit == NULL)
4637 		return 0;
4638 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4639 	if (errstr != NULL)
4640 		return 0;
4641 	return n;
4642 }
4643 
4644 static const struct got_error *
4645 cmd_log(int argc, char *argv[])
4646 {
4647 	const struct got_error *error;
4648 	struct got_repository *repo = NULL;
4649 	struct got_worktree *worktree = NULL;
4650 	struct got_object_id *start_id = NULL, *end_id = NULL;
4651 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4652 	char *keyword_idstr = NULL;
4653 	const char *start_commit = NULL, *end_commit = NULL;
4654 	const char *search_pattern = NULL;
4655 	int diff_context = -1, ch;
4656 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4657 	int show_diffstat = 0, reverse_display_order = 0, one_line = 0;
4658 	int toposort = 0;
4659 	const char *errstr;
4660 	struct got_reflist_head refs;
4661 	struct got_reflist_object_id_map *refs_idmap = NULL;
4662 	FILE *tmpfile = NULL;
4663 	int *pack_fds = NULL;
4664 
4665 	TAILQ_INIT(&refs);
4666 
4667 #ifndef PROFILE
4668 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4669 	    NULL)
4670 	    == -1)
4671 		err(1, "pledge");
4672 #endif
4673 
4674 	limit = get_default_log_limit();
4675 
4676 	while ((ch = getopt(argc, argv, "bC:c:dl:PpRr:S:stx:")) != -1) {
4677 		switch (ch) {
4678 		case 'b':
4679 			log_branches = 1;
4680 			break;
4681 		case 'C':
4682 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4683 			    &errstr);
4684 			if (errstr != NULL)
4685 				errx(1, "number of context lines is %s: %s",
4686 				    errstr, optarg);
4687 			break;
4688 		case 'c':
4689 			start_commit = optarg;
4690 			break;
4691 		case 'd':
4692 			show_diffstat = 1;
4693 			break;
4694 		case 'l':
4695 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4696 			if (errstr != NULL)
4697 				errx(1, "number of commits is %s: %s",
4698 				    errstr, optarg);
4699 			break;
4700 		case 'P':
4701 			show_changed_paths = 1;
4702 			break;
4703 		case 'p':
4704 			show_patch = 1;
4705 			break;
4706 		case 'R':
4707 			reverse_display_order = 1;
4708 			break;
4709 		case 'r':
4710 			repo_path = realpath(optarg, NULL);
4711 			if (repo_path == NULL)
4712 				return got_error_from_errno2("realpath",
4713 				    optarg);
4714 			got_path_strip_trailing_slashes(repo_path);
4715 			break;
4716 		case 'S':
4717 			search_pattern = optarg;
4718 			break;
4719 		case 's':
4720 			one_line = 1;
4721 			break;
4722 		case 't':
4723 			toposort = 1;
4724 			break;
4725 		case 'x':
4726 			end_commit = optarg;
4727 			break;
4728 		default:
4729 			usage_log();
4730 			/* NOTREACHED */
4731 		}
4732 	}
4733 
4734 	argc -= optind;
4735 	argv += optind;
4736 
4737 	if (diff_context == -1)
4738 		diff_context = 3;
4739 	else if (!show_patch)
4740 		errx(1, "-C requires -p");
4741 
4742 	if (one_line && (show_patch || show_changed_paths || show_diffstat))
4743 		errx(1, "cannot use -s with -d, -p or -P");
4744 
4745 	cwd = getcwd(NULL, 0);
4746 	if (cwd == NULL) {
4747 		error = got_error_from_errno("getcwd");
4748 		goto done;
4749 	}
4750 
4751 	error = got_repo_pack_fds_open(&pack_fds);
4752 	if (error != NULL)
4753 		goto done;
4754 
4755 	if (repo_path == NULL) {
4756 		error = got_worktree_open(&worktree, cwd,
4757 		    GOT_WORKTREE_GOT_DIR);
4758 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4759 			goto done;
4760 		error = NULL;
4761 	}
4762 
4763 	if (argc == 1) {
4764 		if (worktree) {
4765 			error = got_worktree_resolve_path(&path, worktree,
4766 			    argv[0]);
4767 			if (error)
4768 				goto done;
4769 		} else {
4770 			path = strdup(argv[0]);
4771 			if (path == NULL) {
4772 				error = got_error_from_errno("strdup");
4773 				goto done;
4774 			}
4775 		}
4776 	} else if (argc != 0)
4777 		usage_log();
4778 
4779 	if (repo_path == NULL) {
4780 		repo_path = worktree ?
4781 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4782 	}
4783 	if (repo_path == NULL) {
4784 		error = got_error_from_errno("strdup");
4785 		goto done;
4786 	}
4787 
4788 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4789 	if (error != NULL)
4790 		goto done;
4791 
4792 	error = apply_unveil(got_repo_get_path(repo), 1,
4793 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4794 	if (error)
4795 		goto done;
4796 
4797 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4798 	if (error)
4799 		goto done;
4800 
4801 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4802 	if (error)
4803 		goto done;
4804 
4805 	if (start_commit == NULL) {
4806 		struct got_reference *head_ref;
4807 		struct got_commit_object *commit = NULL;
4808 		error = got_ref_open(&head_ref, repo,
4809 		    worktree ? got_worktree_get_head_ref_name(worktree)
4810 		    : GOT_REF_HEAD, 0);
4811 		if (error != NULL)
4812 			goto done;
4813 		error = got_ref_resolve(&start_id, repo, head_ref);
4814 		got_ref_close(head_ref);
4815 		if (error != NULL)
4816 			goto done;
4817 		error = got_object_open_as_commit(&commit, repo,
4818 		    start_id);
4819 		if (error != NULL)
4820 			goto done;
4821 		got_object_commit_close(commit);
4822 	} else {
4823 		error = got_keyword_to_idstr(&keyword_idstr, start_commit,
4824 		    repo, worktree);
4825 		if (error != NULL)
4826 			goto done;
4827 		if (keyword_idstr != NULL)
4828 			start_commit = keyword_idstr;
4829 
4830 		error = got_repo_match_object_id(&start_id, NULL,
4831 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4832 		if (error != NULL)
4833 			goto done;
4834 	}
4835 	if (end_commit != NULL) {
4836 		error = got_keyword_to_idstr(&keyword_idstr, end_commit,
4837 		    repo, worktree);
4838 		if (error != NULL)
4839 			goto done;
4840 		if (keyword_idstr != NULL)
4841 			end_commit = keyword_idstr;
4842 
4843 		error = got_repo_match_object_id(&end_id, NULL,
4844 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4845 		if (error != NULL)
4846 			goto done;
4847 	}
4848 
4849 	if (worktree) {
4850 		/*
4851 		 * If a path was specified on the command line it was resolved
4852 		 * to a path in the work tree above. Prepend the work tree's
4853 		 * path prefix to obtain the corresponding in-repository path.
4854 		 */
4855 		if (path) {
4856 			const char *prefix;
4857 			prefix = got_worktree_get_path_prefix(worktree);
4858 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4859 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4860 				error = got_error_from_errno("asprintf");
4861 				goto done;
4862 			}
4863 		}
4864 	} else
4865 		error = got_repo_map_path(&in_repo_path, repo,
4866 		    path ? path : "");
4867 	if (error != NULL)
4868 		goto done;
4869 	if (in_repo_path) {
4870 		free(path);
4871 		path = in_repo_path;
4872 	}
4873 
4874 	if (worktree) {
4875 		/* Release work tree lock. */
4876 		got_worktree_close(worktree);
4877 		worktree = NULL;
4878 	}
4879 
4880 	if (search_pattern && show_patch) {
4881 		tmpfile = got_opentemp();
4882 		if (tmpfile == NULL) {
4883 			error = got_error_from_errno("got_opentemp");
4884 			goto done;
4885 		}
4886 	}
4887 
4888 	error = print_commits(start_id, end_id, repo, path ? path : "",
4889 	    show_changed_paths, show_diffstat, show_patch, search_pattern,
4890 	    diff_context, limit, log_branches, reverse_display_order,
4891 	    refs_idmap, one_line, toposort, tmpfile);
4892 done:
4893 	free(path);
4894 	free(repo_path);
4895 	free(cwd);
4896 	free(start_id);
4897 	free(end_id);
4898 	free(keyword_idstr);
4899 	if (worktree)
4900 		got_worktree_close(worktree);
4901 	if (repo) {
4902 		const struct got_error *close_err = got_repo_close(repo);
4903 		if (error == NULL)
4904 			error = close_err;
4905 	}
4906 	if (pack_fds) {
4907 		const struct got_error *pack_err =
4908 		    got_repo_pack_fds_close(pack_fds);
4909 		if (error == NULL)
4910 			error = pack_err;
4911 	}
4912 	if (refs_idmap)
4913 		got_reflist_object_id_map_free(refs_idmap);
4914 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4915 		error = got_error_from_errno("fclose");
4916 	got_ref_list_free(&refs);
4917 	return error;
4918 }
4919 
4920 __dead static void
4921 usage_diff(void)
4922 {
4923 	fprintf(stderr, "usage: %s diff [-adPsw] [-C number] [-c commit] "
4924 	    "[-r repository-path] [object1 object2 | path ...]\n",
4925 	    getprogname());
4926 	exit(1);
4927 }
4928 
4929 struct print_diff_arg {
4930 	struct got_repository *repo;
4931 	struct got_worktree *worktree;
4932 	struct got_diffstat_cb_arg *diffstat;
4933 	int diff_context;
4934 	const char *id_str;
4935 	int header_shown;
4936 	int diff_staged;
4937 	enum got_diff_algorithm diff_algo;
4938 	int ignore_whitespace;
4939 	int force_text_diff;
4940 	FILE *f1;
4941 	FILE *f2;
4942 	FILE *outfile;
4943 };
4944 
4945 /*
4946  * Create a file which contains the target path of a symlink so we can feed
4947  * it as content to the diff engine.
4948  */
4949 static const struct got_error *
4950 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4951     const char *abspath)
4952 {
4953 	const struct got_error *err = NULL;
4954 	char target_path[PATH_MAX];
4955 	ssize_t target_len, outlen;
4956 
4957 	*fd = -1;
4958 
4959 	if (dirfd != -1) {
4960 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4961 		if (target_len == -1)
4962 			return got_error_from_errno2("readlinkat", abspath);
4963 	} else {
4964 		target_len = readlink(abspath, target_path, PATH_MAX);
4965 		if (target_len == -1)
4966 			return got_error_from_errno2("readlink", abspath);
4967 	}
4968 
4969 	*fd = got_opentempfd();
4970 	if (*fd == -1)
4971 		return got_error_from_errno("got_opentempfd");
4972 
4973 	outlen = write(*fd, target_path, target_len);
4974 	if (outlen == -1) {
4975 		err = got_error_from_errno("got_opentempfd");
4976 		goto done;
4977 	}
4978 
4979 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4980 		err = got_error_from_errno2("lseek", abspath);
4981 		goto done;
4982 	}
4983 done:
4984 	if (err) {
4985 		close(*fd);
4986 		*fd = -1;
4987 	}
4988 	return err;
4989 }
4990 
4991 static const struct got_error *
4992 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4993     const char *path, struct got_object_id *blob_id,
4994     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4995     int dirfd, const char *de_name)
4996 {
4997 	struct print_diff_arg *a = arg;
4998 	const struct got_error *err = NULL;
4999 	struct got_blob_object *blob1 = NULL;
5000 	int fd = -1, fd1 = -1, fd2 = -1;
5001 	FILE *f2 = NULL;
5002 	char *abspath = NULL, *label1 = NULL;
5003 	struct stat sb;
5004 	off_t size1 = 0;
5005 	int f2_exists = 0;
5006 
5007 	memset(&sb, 0, sizeof(sb));
5008 
5009 	if (a->diff_staged) {
5010 		if (staged_status != GOT_STATUS_MODIFY &&
5011 		    staged_status != GOT_STATUS_ADD &&
5012 		    staged_status != GOT_STATUS_DELETE)
5013 			return NULL;
5014 	} else {
5015 		if (staged_status == GOT_STATUS_DELETE)
5016 			return NULL;
5017 		if (status == GOT_STATUS_NONEXISTENT)
5018 			return got_error_set_errno(ENOENT, path);
5019 		if (status != GOT_STATUS_MODIFY &&
5020 		    status != GOT_STATUS_ADD &&
5021 		    status != GOT_STATUS_DELETE &&
5022 		    status != GOT_STATUS_CONFLICT)
5023 			return NULL;
5024 	}
5025 
5026 	err = got_opentemp_truncate(a->f1);
5027 	if (err)
5028 		return got_error_from_errno("got_opentemp_truncate");
5029 	err = got_opentemp_truncate(a->f2);
5030 	if (err)
5031 		return got_error_from_errno("got_opentemp_truncate");
5032 
5033 	if (!a->header_shown) {
5034 		if (fprintf(a->outfile, "diff %s%s\n",
5035 		    a->diff_staged ? "-s " : "",
5036 		    got_worktree_get_root_path(a->worktree)) < 0) {
5037 			err = got_error_from_errno("fprintf");
5038 			goto done;
5039 		}
5040 		if (fprintf(a->outfile, "commit - %s\n", a->id_str) < 0) {
5041 			err = got_error_from_errno("fprintf");
5042 			goto done;
5043 		}
5044 		if (fprintf(a->outfile, "path + %s%s\n",
5045 		    got_worktree_get_root_path(a->worktree),
5046 		    a->diff_staged ? " (staged changes)" : "") < 0) {
5047 			err = got_error_from_errno("fprintf");
5048 			goto done;
5049 		}
5050 		a->header_shown = 1;
5051 	}
5052 
5053 	if (a->diff_staged) {
5054 		const char *label1 = NULL, *label2 = NULL;
5055 		switch (staged_status) {
5056 		case GOT_STATUS_MODIFY:
5057 			label1 = path;
5058 			label2 = path;
5059 			break;
5060 		case GOT_STATUS_ADD:
5061 			label2 = path;
5062 			break;
5063 		case GOT_STATUS_DELETE:
5064 			label1 = path;
5065 			break;
5066 		default:
5067 			return got_error(GOT_ERR_FILE_STATUS);
5068 		}
5069 		fd1 = got_opentempfd();
5070 		if (fd1 == -1) {
5071 			err = got_error_from_errno("got_opentempfd");
5072 			goto done;
5073 		}
5074 		fd2 = got_opentempfd();
5075 		if (fd2 == -1) {
5076 			err = got_error_from_errno("got_opentempfd");
5077 			goto done;
5078 		}
5079 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
5080 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
5081 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
5082 		    a->force_text_diff, a->diffstat, a->repo, a->outfile);
5083 		goto done;
5084 	}
5085 
5086 	fd1 = got_opentempfd();
5087 	if (fd1 == -1) {
5088 		err = got_error_from_errno("got_opentempfd");
5089 		goto done;
5090 	}
5091 
5092 	if (staged_status == GOT_STATUS_ADD ||
5093 	    staged_status == GOT_STATUS_MODIFY) {
5094 		char *id_str;
5095 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
5096 		    8192, fd1);
5097 		if (err)
5098 			goto done;
5099 		err = got_object_id_str(&id_str, staged_blob_id);
5100 		if (err)
5101 			goto done;
5102 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
5103 			err = got_error_from_errno("asprintf");
5104 			free(id_str);
5105 			goto done;
5106 		}
5107 		free(id_str);
5108 	} else if (status != GOT_STATUS_ADD) {
5109 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
5110 		    fd1);
5111 		if (err)
5112 			goto done;
5113 	}
5114 
5115 	if (status != GOT_STATUS_DELETE) {
5116 		if (asprintf(&abspath, "%s/%s",
5117 		    got_worktree_get_root_path(a->worktree), path) == -1) {
5118 			err = got_error_from_errno("asprintf");
5119 			goto done;
5120 		}
5121 
5122 		if (dirfd != -1) {
5123 			fd = openat(dirfd, de_name,
5124 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5125 			if (fd == -1) {
5126 				if (!got_err_open_nofollow_on_symlink()) {
5127 					err = got_error_from_errno2("openat",
5128 					    abspath);
5129 					goto done;
5130 				}
5131 				err = get_symlink_target_file(&fd, dirfd,
5132 				    de_name, abspath);
5133 				if (err)
5134 					goto done;
5135 			}
5136 		} else {
5137 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5138 			if (fd == -1) {
5139 				if (!got_err_open_nofollow_on_symlink()) {
5140 					err = got_error_from_errno2("open",
5141 					    abspath);
5142 					goto done;
5143 				}
5144 				err = get_symlink_target_file(&fd, dirfd,
5145 				    de_name, abspath);
5146 				if (err)
5147 					goto done;
5148 			}
5149 		}
5150 		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
5151 			err = got_error_from_errno2("fstatat", abspath);
5152 			goto done;
5153 		}
5154 		f2 = fdopen(fd, "r");
5155 		if (f2 == NULL) {
5156 			err = got_error_from_errno2("fdopen", abspath);
5157 			goto done;
5158 		}
5159 		fd = -1;
5160 		f2_exists = 1;
5161 	}
5162 
5163 	if (blob1) {
5164 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
5165 		    a->f1, blob1);
5166 		if (err)
5167 			goto done;
5168 	}
5169 
5170 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
5171 	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
5172 	    a->ignore_whitespace, a->force_text_diff, a->diffstat, a->outfile);
5173 done:
5174 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
5175 		err = got_error_from_errno("close");
5176 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
5177 		err = got_error_from_errno("close");
5178 	if (blob1)
5179 		got_object_blob_close(blob1);
5180 	if (fd != -1 && close(fd) == -1 && err == NULL)
5181 		err = got_error_from_errno("close");
5182 	if (f2 && fclose(f2) == EOF && err == NULL)
5183 		err = got_error_from_errno("fclose");
5184 	free(abspath);
5185 	return err;
5186 }
5187 
5188 static const struct got_error *
5189 cmd_diff(int argc, char *argv[])
5190 {
5191 	const struct got_error *error;
5192 	struct got_repository *repo = NULL;
5193 	struct got_worktree *worktree = NULL;
5194 	char *cwd = NULL, *repo_path = NULL;
5195 	const char *commit_args[2] = { NULL, NULL };
5196 	int ncommit_args = 0;
5197 	struct got_object_id *ids[2] = { NULL, NULL };
5198 	char *labels[2] = { NULL, NULL };
5199 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
5200 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
5201 	int force_text_diff = 0, force_path = 0, rflag = 0, show_diffstat = 0;
5202 	const char *errstr;
5203 	struct got_reflist_head refs;
5204 	struct got_pathlist_head diffstat_paths, paths;
5205 	FILE *f1 = NULL, *f2 = NULL, *outfile = NULL;
5206 	int fd1 = -1, fd2 = -1;
5207 	int *pack_fds = NULL;
5208 	struct got_diffstat_cb_arg dsa;
5209 
5210 	memset(&dsa, 0, sizeof(dsa));
5211 
5212 	TAILQ_INIT(&refs);
5213 	TAILQ_INIT(&paths);
5214 	TAILQ_INIT(&diffstat_paths);
5215 
5216 #ifndef PROFILE
5217 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5218 	    NULL) == -1)
5219 		err(1, "pledge");
5220 #endif
5221 
5222 	while ((ch = getopt(argc, argv, "aC:c:dPr:sw")) != -1) {
5223 		switch (ch) {
5224 		case 'a':
5225 			force_text_diff = 1;
5226 			break;
5227 		case 'C':
5228 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
5229 			    &errstr);
5230 			if (errstr != NULL)
5231 				errx(1, "number of context lines is %s: %s",
5232 				    errstr, optarg);
5233 			break;
5234 		case 'c':
5235 			if (ncommit_args >= 2)
5236 				errx(1, "too many -c options used");
5237 			commit_args[ncommit_args++] = optarg;
5238 			break;
5239 		case 'd':
5240 			show_diffstat = 1;
5241 			break;
5242 		case 'P':
5243 			force_path = 1;
5244 			break;
5245 		case 'r':
5246 			repo_path = realpath(optarg, NULL);
5247 			if (repo_path == NULL)
5248 				return got_error_from_errno2("realpath",
5249 				    optarg);
5250 			got_path_strip_trailing_slashes(repo_path);
5251 			rflag = 1;
5252 			break;
5253 		case 's':
5254 			diff_staged = 1;
5255 			break;
5256 		case 'w':
5257 			ignore_whitespace = 1;
5258 			break;
5259 		default:
5260 			usage_diff();
5261 			/* NOTREACHED */
5262 		}
5263 	}
5264 
5265 	argc -= optind;
5266 	argv += optind;
5267 
5268 	cwd = getcwd(NULL, 0);
5269 	if (cwd == NULL) {
5270 		error = got_error_from_errno("getcwd");
5271 		goto done;
5272 	}
5273 
5274 	error = got_repo_pack_fds_open(&pack_fds);
5275 	if (error != NULL)
5276 		goto done;
5277 
5278 	if (repo_path == NULL) {
5279 		error = got_worktree_open(&worktree, cwd,
5280 		    GOT_WORKTREE_GOT_DIR);
5281 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5282 			goto done;
5283 		else
5284 			error = NULL;
5285 		if (worktree) {
5286 			repo_path =
5287 			    strdup(got_worktree_get_repo_path(worktree));
5288 			if (repo_path == NULL) {
5289 				error = got_error_from_errno("strdup");
5290 				goto done;
5291 			}
5292 		} else {
5293 			repo_path = strdup(cwd);
5294 			if (repo_path == NULL) {
5295 				error = got_error_from_errno("strdup");
5296 				goto done;
5297 			}
5298 		}
5299 	}
5300 
5301 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5302 	free(repo_path);
5303 	if (error != NULL)
5304 		goto done;
5305 
5306 	if (show_diffstat) {
5307 		dsa.paths = &diffstat_paths;
5308 		dsa.force_text = force_text_diff;
5309 		dsa.ignore_ws = ignore_whitespace;
5310 		dsa.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5311 	}
5312 
5313 	if (rflag || worktree == NULL || ncommit_args > 0) {
5314 		if (force_path) {
5315 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5316 			    "-P option can only be used when diffing "
5317 			    "a work tree");
5318 			goto done;
5319 		}
5320 		if (diff_staged) {
5321 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5322 			    "-s option can only be used when diffing "
5323 			    "a work tree");
5324 			goto done;
5325 		}
5326 	}
5327 
5328 	error = apply_unveil(got_repo_get_path(repo), 1,
5329 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5330 	if (error)
5331 		goto done;
5332 
5333 	if ((!force_path && argc == 2) || ncommit_args > 0) {
5334 		int obj_type = (ncommit_args > 0 ?
5335 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
5336 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5337 		    NULL);
5338 		if (error)
5339 			goto done;
5340 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
5341 			const char	*arg;
5342 			char		*keyword_idstr = NULL;
5343 
5344 			if (ncommit_args > 0)
5345 				arg = commit_args[i];
5346 			else
5347 				arg = argv[i];
5348 
5349 			error = got_keyword_to_idstr(&keyword_idstr, arg,
5350 			    repo, worktree);
5351 			if (error != NULL)
5352 				goto done;
5353 			if (keyword_idstr != NULL)
5354 				arg = keyword_idstr;
5355 
5356 			error = got_repo_match_object_id(&ids[i], &labels[i],
5357 			    arg, obj_type, &refs, repo);
5358 			free(keyword_idstr);
5359 			if (error) {
5360 				if (error->code != GOT_ERR_NOT_REF &&
5361 				    error->code != GOT_ERR_NO_OBJ)
5362 					goto done;
5363 				if (ncommit_args > 0)
5364 					goto done;
5365 				error = NULL;
5366 				break;
5367 			}
5368 		}
5369 	}
5370 
5371 	f1 = got_opentemp();
5372 	if (f1 == NULL) {
5373 		error = got_error_from_errno("got_opentemp");
5374 		goto done;
5375 	}
5376 
5377 	f2 = got_opentemp();
5378 	if (f2 == NULL) {
5379 		error = got_error_from_errno("got_opentemp");
5380 		goto done;
5381 	}
5382 
5383 	outfile = got_opentemp();
5384 	if (outfile == NULL) {
5385 		error = got_error_from_errno("got_opentemp");
5386 		goto done;
5387 	}
5388 
5389 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
5390 		struct print_diff_arg arg;
5391 		char *id_str;
5392 
5393 		if (worktree == NULL) {
5394 			if (argc == 2 && ids[0] == NULL) {
5395 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
5396 				goto done;
5397 			} else if (argc == 2 && ids[1] == NULL) {
5398 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
5399 				goto done;
5400 			} else if (argc > 0) {
5401 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
5402 				    "%s", "specified paths cannot be resolved");
5403 				goto done;
5404 			} else {
5405 				error = got_error(GOT_ERR_NOT_WORKTREE);
5406 				goto done;
5407 			}
5408 		}
5409 
5410 		error = get_worktree_paths_from_argv(&paths, argc, argv,
5411 		    worktree);
5412 		if (error)
5413 			goto done;
5414 
5415 		error = got_object_id_str(&id_str,
5416 		    got_worktree_get_base_commit_id(worktree));
5417 		if (error)
5418 			goto done;
5419 		arg.repo = repo;
5420 		arg.worktree = worktree;
5421 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5422 		arg.diff_context = diff_context;
5423 		arg.id_str = id_str;
5424 		arg.header_shown = 0;
5425 		arg.diff_staged = diff_staged;
5426 		arg.ignore_whitespace = ignore_whitespace;
5427 		arg.force_text_diff = force_text_diff;
5428 		arg.diffstat = show_diffstat ? &dsa : NULL;
5429 		arg.f1 = f1;
5430 		arg.f2 = f2;
5431 		arg.outfile = outfile;
5432 
5433 		error = got_worktree_status(worktree, &paths, repo, 0,
5434 		    print_diff, &arg, check_cancelled, NULL);
5435 		free(id_str);
5436 		if (error)
5437 			goto done;
5438 
5439 		if (show_diffstat && dsa.nfiles > 0) {
5440 			char *header;
5441 
5442 			if (asprintf(&header, "diffstat %s%s",
5443 			    diff_staged ? "-s " : "",
5444 			    got_worktree_get_root_path(worktree)) == -1) {
5445 				error = got_error_from_errno("asprintf");
5446 				goto done;
5447 			}
5448 
5449 			error = print_diffstat(&dsa, header);
5450 			free(header);
5451 			if (error)
5452 				goto done;
5453 		}
5454 
5455 		error = printfile(outfile);
5456 		goto done;
5457 	}
5458 
5459 	if (ncommit_args == 1) {
5460 		struct got_commit_object *commit;
5461 		error = got_object_open_as_commit(&commit, repo, ids[0]);
5462 		if (error)
5463 			goto done;
5464 
5465 		labels[1] = labels[0];
5466 		ids[1] = ids[0];
5467 		if (got_object_commit_get_nparents(commit) > 0) {
5468 			const struct got_object_id_queue *pids;
5469 			struct got_object_qid *pid;
5470 			pids = got_object_commit_get_parent_ids(commit);
5471 			pid = STAILQ_FIRST(pids);
5472 			ids[0] = got_object_id_dup(&pid->id);
5473 			if (ids[0] == NULL) {
5474 				error = got_error_from_errno(
5475 				    "got_object_id_dup");
5476 				got_object_commit_close(commit);
5477 				goto done;
5478 			}
5479 			error = got_object_id_str(&labels[0], ids[0]);
5480 			if (error) {
5481 				got_object_commit_close(commit);
5482 				goto done;
5483 			}
5484 		} else {
5485 			ids[0] = NULL;
5486 			labels[0] = strdup("/dev/null");
5487 			if (labels[0] == NULL) {
5488 				error = got_error_from_errno("strdup");
5489 				got_object_commit_close(commit);
5490 				goto done;
5491 			}
5492 		}
5493 
5494 		got_object_commit_close(commit);
5495 	}
5496 
5497 	if (ncommit_args == 0 && argc > 2) {
5498 		error = got_error_msg(GOT_ERR_BAD_PATH,
5499 		    "path arguments cannot be used when diffing two objects");
5500 		goto done;
5501 	}
5502 
5503 	if (ids[0]) {
5504 		error = got_object_get_type(&type1, repo, ids[0]);
5505 		if (error)
5506 			goto done;
5507 	}
5508 
5509 	error = got_object_get_type(&type2, repo, ids[1]);
5510 	if (error)
5511 		goto done;
5512 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
5513 		error = got_error(GOT_ERR_OBJ_TYPE);
5514 		goto done;
5515 	}
5516 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
5517 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
5518 		    "path arguments cannot be used when diffing blobs");
5519 		goto done;
5520 	}
5521 
5522 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
5523 		char *in_repo_path;
5524 		struct got_pathlist_entry *new;
5525 		if (worktree) {
5526 			const char *prefix;
5527 			char *p;
5528 			error = got_worktree_resolve_path(&p, worktree,
5529 			    argv[i]);
5530 			if (error)
5531 				goto done;
5532 			prefix = got_worktree_get_path_prefix(worktree);
5533 			while (prefix[0] == '/')
5534 				prefix++;
5535 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
5536 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
5537 			    p) == -1) {
5538 				error = got_error_from_errno("asprintf");
5539 				free(p);
5540 				goto done;
5541 			}
5542 			free(p);
5543 		} else {
5544 			char *mapped_path, *s;
5545 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
5546 			if (error)
5547 				goto done;
5548 			s = mapped_path;
5549 			while (s[0] == '/')
5550 				s++;
5551 			in_repo_path = strdup(s);
5552 			if (in_repo_path == NULL) {
5553 				error = got_error_from_errno("asprintf");
5554 				free(mapped_path);
5555 				goto done;
5556 			}
5557 			free(mapped_path);
5558 
5559 		}
5560 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
5561 		if (error || new == NULL /* duplicate */)
5562 			free(in_repo_path);
5563 		if (error)
5564 			goto done;
5565 	}
5566 
5567 	if (worktree) {
5568 		/* Release work tree lock. */
5569 		got_worktree_close(worktree);
5570 		worktree = NULL;
5571 	}
5572 
5573 	fd1 = got_opentempfd();
5574 	if (fd1 == -1) {
5575 		error = got_error_from_errno("got_opentempfd");
5576 		goto done;
5577 	}
5578 
5579 	fd2 = got_opentempfd();
5580 	if (fd2 == -1) {
5581 		error = got_error_from_errno("got_opentempfd");
5582 		goto done;
5583 	}
5584 
5585 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
5586 	case GOT_OBJ_TYPE_BLOB:
5587 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
5588 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
5589 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5590 		    ignore_whitespace, force_text_diff,
5591 		    show_diffstat ? &dsa : NULL, repo, outfile);
5592 		break;
5593 	case GOT_OBJ_TYPE_TREE:
5594 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
5595 		    ids[0], ids[1], &paths, "", "",
5596 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5597 		    ignore_whitespace, force_text_diff,
5598 		    show_diffstat ? &dsa : NULL, repo, outfile);
5599 		break;
5600 	case GOT_OBJ_TYPE_COMMIT:
5601 		fprintf(outfile, "diff %s %s\n", labels[0], labels[1]);
5602 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
5603 		    fd1, fd2, ids[0], ids[1], &paths,
5604 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5605 		    ignore_whitespace, force_text_diff,
5606 		    show_diffstat ? &dsa : NULL, repo, outfile);
5607 		break;
5608 	default:
5609 		error = got_error(GOT_ERR_OBJ_TYPE);
5610 	}
5611 	if (error)
5612 		goto done;
5613 
5614 	if (show_diffstat && dsa.nfiles > 0) {
5615 		char *header = NULL;
5616 
5617 		if (asprintf(&header, "diffstat %s %s",
5618 		    labels[0], labels[1]) == -1) {
5619 			error = got_error_from_errno("asprintf");
5620 			goto done;
5621 		}
5622 
5623 		error = print_diffstat(&dsa, header);
5624 		free(header);
5625 		if (error)
5626 			goto done;
5627 	}
5628 
5629 	error = printfile(outfile);
5630 
5631 done:
5632 	free(labels[0]);
5633 	free(labels[1]);
5634 	free(ids[0]);
5635 	free(ids[1]);
5636 	if (worktree)
5637 		got_worktree_close(worktree);
5638 	if (repo) {
5639 		const struct got_error *close_err = got_repo_close(repo);
5640 		if (error == NULL)
5641 			error = close_err;
5642 	}
5643 	if (pack_fds) {
5644 		const struct got_error *pack_err =
5645 		    got_repo_pack_fds_close(pack_fds);
5646 		if (error == NULL)
5647 			error = pack_err;
5648 	}
5649 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
5650 	got_pathlist_free(&diffstat_paths, GOT_PATHLIST_FREE_ALL);
5651 	got_ref_list_free(&refs);
5652 	if (outfile && fclose(outfile) == EOF && error == NULL)
5653 		error = got_error_from_errno("fclose");
5654 	if (f1 && fclose(f1) == EOF && error == NULL)
5655 		error = got_error_from_errno("fclose");
5656 	if (f2 && fclose(f2) == EOF && error == NULL)
5657 		error = got_error_from_errno("fclose");
5658 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5659 		error = got_error_from_errno("close");
5660 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5661 		error = got_error_from_errno("close");
5662 	return error;
5663 }
5664 
5665 __dead static void
5666 usage_blame(void)
5667 {
5668 	fprintf(stderr,
5669 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
5670 	    getprogname());
5671 	exit(1);
5672 }
5673 
5674 struct blame_line {
5675 	int annotated;
5676 	char *id_str;
5677 	char *committer;
5678 	char datebuf[11]; /* YYYY-MM-DD + NUL */
5679 };
5680 
5681 struct blame_cb_args {
5682 	struct blame_line *lines;
5683 	int nlines;
5684 	int nlines_prec;
5685 	int lineno_cur;
5686 	off_t *line_offsets;
5687 	FILE *f;
5688 	struct got_repository *repo;
5689 };
5690 
5691 static const struct got_error *
5692 blame_cb(void *arg, int nlines, int lineno,
5693     struct got_commit_object *commit, struct got_object_id *id)
5694 {
5695 	const struct got_error *err = NULL;
5696 	struct blame_cb_args *a = arg;
5697 	struct blame_line *bline;
5698 	char *line = NULL;
5699 	size_t linesize = 0;
5700 	off_t offset;
5701 	struct tm tm;
5702 	time_t committer_time;
5703 
5704 	if (nlines != a->nlines ||
5705 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
5706 		return got_error(GOT_ERR_RANGE);
5707 
5708 	if (sigint_received)
5709 		return got_error(GOT_ERR_ITER_COMPLETED);
5710 
5711 	if (lineno == -1)
5712 		return NULL; /* no change in this commit */
5713 
5714 	/* Annotate this line. */
5715 	bline = &a->lines[lineno - 1];
5716 	if (bline->annotated)
5717 		return NULL;
5718 	err = got_object_id_str(&bline->id_str, id);
5719 	if (err)
5720 		return err;
5721 
5722 	bline->committer = strdup(got_object_commit_get_committer(commit));
5723 	if (bline->committer == NULL) {
5724 		err = got_error_from_errno("strdup");
5725 		goto done;
5726 	}
5727 
5728 	committer_time = got_object_commit_get_committer_time(commit);
5729 	if (gmtime_r(&committer_time, &tm) == NULL)
5730 		return got_error_from_errno("gmtime_r");
5731 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%F", &tm) == 0) {
5732 		err = got_error(GOT_ERR_NO_SPACE);
5733 		goto done;
5734 	}
5735 	bline->annotated = 1;
5736 
5737 	/* Print lines annotated so far. */
5738 	bline = &a->lines[a->lineno_cur - 1];
5739 	if (!bline->annotated)
5740 		goto done;
5741 
5742 	offset = a->line_offsets[a->lineno_cur - 1];
5743 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5744 		err = got_error_from_errno("fseeko");
5745 		goto done;
5746 	}
5747 
5748 	while (a->lineno_cur <= a->nlines && bline->annotated) {
5749 		char *smallerthan, *at, *nl, *committer;
5750 		size_t len;
5751 
5752 		if (getline(&line, &linesize, a->f) == -1) {
5753 			if (ferror(a->f))
5754 				err = got_error_from_errno("getline");
5755 			break;
5756 		}
5757 
5758 		committer = bline->committer;
5759 		smallerthan = strchr(committer, '<');
5760 		if (smallerthan && smallerthan[1] != '\0')
5761 			committer = smallerthan + 1;
5762 		at = strchr(committer, '@');
5763 		if (at)
5764 			*at = '\0';
5765 		len = strlen(committer);
5766 		if (len >= 9)
5767 			committer[8] = '\0';
5768 
5769 		nl = strchr(line, '\n');
5770 		if (nl)
5771 			*nl = '\0';
5772 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5773 		    bline->id_str, bline->datebuf, committer, line);
5774 
5775 		a->lineno_cur++;
5776 		bline = &a->lines[a->lineno_cur - 1];
5777 	}
5778 done:
5779 	free(line);
5780 	return err;
5781 }
5782 
5783 static const struct got_error *
5784 cmd_blame(int argc, char *argv[])
5785 {
5786 	const struct got_error *error;
5787 	struct got_repository *repo = NULL;
5788 	struct got_worktree *worktree = NULL;
5789 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5790 	char *link_target = NULL;
5791 	struct got_object_id *obj_id = NULL;
5792 	struct got_object_id *commit_id = NULL;
5793 	struct got_commit_object *commit = NULL;
5794 	struct got_blob_object *blob = NULL;
5795 	char *commit_id_str = NULL, *keyword_idstr = NULL;
5796 	struct blame_cb_args bca;
5797 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5798 	off_t filesize;
5799 	int *pack_fds = NULL;
5800 	FILE *f1 = NULL, *f2 = NULL;
5801 
5802 	fd1 = got_opentempfd();
5803 	if (fd1 == -1)
5804 		return got_error_from_errno("got_opentempfd");
5805 
5806 	memset(&bca, 0, sizeof(bca));
5807 
5808 #ifndef PROFILE
5809 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5810 	    NULL) == -1)
5811 		err(1, "pledge");
5812 #endif
5813 
5814 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5815 		switch (ch) {
5816 		case 'c':
5817 			commit_id_str = optarg;
5818 			break;
5819 		case 'r':
5820 			repo_path = realpath(optarg, NULL);
5821 			if (repo_path == NULL)
5822 				return got_error_from_errno2("realpath",
5823 				    optarg);
5824 			got_path_strip_trailing_slashes(repo_path);
5825 			break;
5826 		default:
5827 			usage_blame();
5828 			/* NOTREACHED */
5829 		}
5830 	}
5831 
5832 	argc -= optind;
5833 	argv += optind;
5834 
5835 	if (argc == 1)
5836 		path = argv[0];
5837 	else
5838 		usage_blame();
5839 
5840 	cwd = getcwd(NULL, 0);
5841 	if (cwd == NULL) {
5842 		error = got_error_from_errno("getcwd");
5843 		goto done;
5844 	}
5845 
5846 	error = got_repo_pack_fds_open(&pack_fds);
5847 	if (error != NULL)
5848 		goto done;
5849 
5850 	if (repo_path == NULL) {
5851 		error = got_worktree_open(&worktree, cwd,
5852 		    GOT_WORKTREE_GOT_DIR);
5853 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5854 			goto done;
5855 		else
5856 			error = NULL;
5857 		if (worktree) {
5858 			repo_path =
5859 			    strdup(got_worktree_get_repo_path(worktree));
5860 			if (repo_path == NULL) {
5861 				error = got_error_from_errno("strdup");
5862 				if (error)
5863 					goto done;
5864 			}
5865 		} else {
5866 			repo_path = strdup(cwd);
5867 			if (repo_path == NULL) {
5868 				error = got_error_from_errno("strdup");
5869 				goto done;
5870 			}
5871 		}
5872 	}
5873 
5874 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5875 	if (error != NULL)
5876 		goto done;
5877 
5878 	if (worktree) {
5879 		const char *prefix = got_worktree_get_path_prefix(worktree);
5880 		char *p;
5881 
5882 		error = got_worktree_resolve_path(&p, worktree, path);
5883 		if (error)
5884 			goto done;
5885 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5886 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5887 		    p) == -1) {
5888 			error = got_error_from_errno("asprintf");
5889 			free(p);
5890 			goto done;
5891 		}
5892 		free(p);
5893 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5894 	} else {
5895 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5896 		if (error)
5897 			goto done;
5898 		error = got_repo_map_path(&in_repo_path, repo, path);
5899 	}
5900 	if (error)
5901 		goto done;
5902 
5903 	if (commit_id_str == NULL) {
5904 		struct got_reference *head_ref;
5905 		error = got_ref_open(&head_ref, repo, worktree ?
5906 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5907 		if (error != NULL)
5908 			goto done;
5909 		error = got_ref_resolve(&commit_id, repo, head_ref);
5910 		got_ref_close(head_ref);
5911 		if (error != NULL)
5912 			goto done;
5913 	} else {
5914 		struct got_reflist_head refs;
5915 
5916 		TAILQ_INIT(&refs);
5917 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5918 		    NULL);
5919 		if (error)
5920 			goto done;
5921 
5922 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
5923 		    repo, worktree);
5924 		if (error != NULL)
5925 			goto done;
5926 		if (keyword_idstr != NULL)
5927 			commit_id_str = keyword_idstr;
5928 
5929 		error = got_repo_match_object_id(&commit_id, NULL,
5930 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5931 		got_ref_list_free(&refs);
5932 		if (error)
5933 			goto done;
5934 	}
5935 
5936 	if (worktree) {
5937 		/* Release work tree lock. */
5938 		got_worktree_close(worktree);
5939 		worktree = NULL;
5940 	}
5941 
5942 	error = got_object_open_as_commit(&commit, repo, commit_id);
5943 	if (error)
5944 		goto done;
5945 
5946 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5947 	    commit, repo);
5948 	if (error)
5949 		goto done;
5950 
5951 	error = got_object_id_by_path(&obj_id, repo, commit,
5952 	    link_target ? link_target : in_repo_path);
5953 	if (error)
5954 		goto done;
5955 
5956 	error = got_object_get_type(&obj_type, repo, obj_id);
5957 	if (error)
5958 		goto done;
5959 
5960 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5961 		error = got_error_path(link_target ? link_target : in_repo_path,
5962 		    GOT_ERR_OBJ_TYPE);
5963 		goto done;
5964 	}
5965 
5966 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5967 	if (error)
5968 		goto done;
5969 	bca.f = got_opentemp();
5970 	if (bca.f == NULL) {
5971 		error = got_error_from_errno("got_opentemp");
5972 		goto done;
5973 	}
5974 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5975 	    &bca.line_offsets, bca.f, blob);
5976 	if (error || bca.nlines == 0)
5977 		goto done;
5978 
5979 	/* Don't include \n at EOF in the blame line count. */
5980 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5981 		bca.nlines--;
5982 
5983 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5984 	if (bca.lines == NULL) {
5985 		error = got_error_from_errno("calloc");
5986 		goto done;
5987 	}
5988 	bca.lineno_cur = 1;
5989 	bca.nlines_prec = 0;
5990 	i = bca.nlines;
5991 	while (i > 0) {
5992 		i /= 10;
5993 		bca.nlines_prec++;
5994 	}
5995 	bca.repo = repo;
5996 
5997 	fd2 = got_opentempfd();
5998 	if (fd2 == -1) {
5999 		error = got_error_from_errno("got_opentempfd");
6000 		goto done;
6001 	}
6002 	fd3 = got_opentempfd();
6003 	if (fd3 == -1) {
6004 		error = got_error_from_errno("got_opentempfd");
6005 		goto done;
6006 	}
6007 	f1 = got_opentemp();
6008 	if (f1 == NULL) {
6009 		error = got_error_from_errno("got_opentemp");
6010 		goto done;
6011 	}
6012 	f2 = got_opentemp();
6013 	if (f2 == NULL) {
6014 		error = got_error_from_errno("got_opentemp");
6015 		goto done;
6016 	}
6017 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
6018 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
6019 	    check_cancelled, NULL, fd2, fd3, f1, f2);
6020 done:
6021 	free(keyword_idstr);
6022 	free(in_repo_path);
6023 	free(link_target);
6024 	free(repo_path);
6025 	free(cwd);
6026 	free(commit_id);
6027 	free(obj_id);
6028 	if (commit)
6029 		got_object_commit_close(commit);
6030 
6031 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
6032 		error = got_error_from_errno("close");
6033 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
6034 		error = got_error_from_errno("close");
6035 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
6036 		error = got_error_from_errno("close");
6037 	if (f1 && fclose(f1) == EOF && error == NULL)
6038 		error = got_error_from_errno("fclose");
6039 	if (f2 && fclose(f2) == EOF && error == NULL)
6040 		error = got_error_from_errno("fclose");
6041 
6042 	if (blob)
6043 		got_object_blob_close(blob);
6044 	if (worktree)
6045 		got_worktree_close(worktree);
6046 	if (repo) {
6047 		const struct got_error *close_err = got_repo_close(repo);
6048 		if (error == NULL)
6049 			error = close_err;
6050 	}
6051 	if (pack_fds) {
6052 		const struct got_error *pack_err =
6053 		    got_repo_pack_fds_close(pack_fds);
6054 		if (error == NULL)
6055 			error = pack_err;
6056 	}
6057 	if (bca.lines) {
6058 		for (i = 0; i < bca.nlines; i++) {
6059 			struct blame_line *bline = &bca.lines[i];
6060 			free(bline->id_str);
6061 			free(bline->committer);
6062 		}
6063 		free(bca.lines);
6064 	}
6065 	free(bca.line_offsets);
6066 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
6067 		error = got_error_from_errno("fclose");
6068 	return error;
6069 }
6070 
6071 __dead static void
6072 usage_tree(void)
6073 {
6074 	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
6075 	    "[path]\n", getprogname());
6076 	exit(1);
6077 }
6078 
6079 static const struct got_error *
6080 print_entry(struct got_tree_entry *te, const char *id, const char *path,
6081     const char *root_path, struct got_repository *repo)
6082 {
6083 	const struct got_error *err = NULL;
6084 	int is_root_path = (strcmp(path, root_path) == 0);
6085 	const char *modestr = "";
6086 	mode_t mode = got_tree_entry_get_mode(te);
6087 	char *link_target = NULL;
6088 
6089 	path += strlen(root_path);
6090 	while (path[0] == '/')
6091 		path++;
6092 
6093 	if (got_object_tree_entry_is_submodule(te))
6094 		modestr = "$";
6095 	else if (S_ISLNK(mode)) {
6096 		int i;
6097 
6098 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
6099 		if (err)
6100 			return err;
6101 		for (i = 0; link_target[i] != '\0'; i++) {
6102 			if (!isprint((unsigned char)link_target[i]))
6103 				link_target[i] = '?';
6104 		}
6105 
6106 		modestr = "@";
6107 	}
6108 	else if (S_ISDIR(mode))
6109 		modestr = "/";
6110 	else if (mode & S_IXUSR)
6111 		modestr = "*";
6112 
6113 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
6114 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
6115 	    link_target ? " -> ": "", link_target ? link_target : "");
6116 
6117 	free(link_target);
6118 	return NULL;
6119 }
6120 
6121 static const struct got_error *
6122 print_tree(const char *path, struct got_commit_object *commit,
6123     int show_ids, int recurse, const char *root_path,
6124     struct got_repository *repo)
6125 {
6126 	const struct got_error *err = NULL;
6127 	struct got_object_id *tree_id = NULL;
6128 	struct got_tree_object *tree = NULL;
6129 	int nentries, i;
6130 
6131 	err = got_object_id_by_path(&tree_id, repo, commit, path);
6132 	if (err)
6133 		goto done;
6134 
6135 	err = got_object_open_as_tree(&tree, repo, tree_id);
6136 	if (err)
6137 		goto done;
6138 	nentries = got_object_tree_get_nentries(tree);
6139 	for (i = 0; i < nentries; i++) {
6140 		struct got_tree_entry *te;
6141 		char *id = NULL;
6142 
6143 		if (sigint_received || sigpipe_received)
6144 			break;
6145 
6146 		te = got_object_tree_get_entry(tree, i);
6147 		if (show_ids) {
6148 			char *id_str;
6149 			err = got_object_id_str(&id_str,
6150 			    got_tree_entry_get_id(te));
6151 			if (err)
6152 				goto done;
6153 			if (asprintf(&id, "%s ", id_str) == -1) {
6154 				err = got_error_from_errno("asprintf");
6155 				free(id_str);
6156 				goto done;
6157 			}
6158 			free(id_str);
6159 		}
6160 		err = print_entry(te, id, path, root_path, repo);
6161 		free(id);
6162 		if (err)
6163 			goto done;
6164 
6165 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
6166 			char *child_path;
6167 			if (asprintf(&child_path, "%s%s%s", path,
6168 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
6169 			    got_tree_entry_get_name(te)) == -1) {
6170 				err = got_error_from_errno("asprintf");
6171 				goto done;
6172 			}
6173 			err = print_tree(child_path, commit, show_ids, 1,
6174 			    root_path, repo);
6175 			free(child_path);
6176 			if (err)
6177 				goto done;
6178 		}
6179 	}
6180 done:
6181 	if (tree)
6182 		got_object_tree_close(tree);
6183 	free(tree_id);
6184 	return err;
6185 }
6186 
6187 static const struct got_error *
6188 cmd_tree(int argc, char *argv[])
6189 {
6190 	const struct got_error *error;
6191 	struct got_repository *repo = NULL;
6192 	struct got_worktree *worktree = NULL;
6193 	const char *path, *refname = NULL;
6194 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
6195 	struct got_object_id *commit_id = NULL;
6196 	struct got_commit_object *commit = NULL;
6197 	char *commit_id_str = NULL, *keyword_idstr = NULL;
6198 	int show_ids = 0, recurse = 0;
6199 	int ch;
6200 	int *pack_fds = NULL;
6201 
6202 #ifndef PROFILE
6203 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6204 	    NULL) == -1)
6205 		err(1, "pledge");
6206 #endif
6207 
6208 	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
6209 		switch (ch) {
6210 		case 'c':
6211 			commit_id_str = optarg;
6212 			break;
6213 		case 'i':
6214 			show_ids = 1;
6215 			break;
6216 		case 'R':
6217 			recurse = 1;
6218 			break;
6219 		case 'r':
6220 			repo_path = realpath(optarg, NULL);
6221 			if (repo_path == NULL)
6222 				return got_error_from_errno2("realpath",
6223 				    optarg);
6224 			got_path_strip_trailing_slashes(repo_path);
6225 			break;
6226 		default:
6227 			usage_tree();
6228 			/* NOTREACHED */
6229 		}
6230 	}
6231 
6232 	argc -= optind;
6233 	argv += optind;
6234 
6235 	if (argc == 1)
6236 		path = argv[0];
6237 	else if (argc > 1)
6238 		usage_tree();
6239 	else
6240 		path = NULL;
6241 
6242 	cwd = getcwd(NULL, 0);
6243 	if (cwd == NULL) {
6244 		error = got_error_from_errno("getcwd");
6245 		goto done;
6246 	}
6247 
6248 	error = got_repo_pack_fds_open(&pack_fds);
6249 	if (error != NULL)
6250 		goto done;
6251 
6252 	if (repo_path == NULL) {
6253 		error = got_worktree_open(&worktree, cwd,
6254 		    GOT_WORKTREE_GOT_DIR);
6255 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6256 			goto done;
6257 		else
6258 			error = NULL;
6259 		if (worktree) {
6260 			repo_path =
6261 			    strdup(got_worktree_get_repo_path(worktree));
6262 			if (repo_path == NULL)
6263 				error = got_error_from_errno("strdup");
6264 			if (error)
6265 				goto done;
6266 		} else {
6267 			repo_path = strdup(cwd);
6268 			if (repo_path == NULL) {
6269 				error = got_error_from_errno("strdup");
6270 				goto done;
6271 			}
6272 		}
6273 	}
6274 
6275 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6276 	if (error != NULL)
6277 		goto done;
6278 
6279 	if (worktree) {
6280 		const char *prefix = got_worktree_get_path_prefix(worktree);
6281 		char *p;
6282 
6283 		if (path == NULL || got_path_is_root_dir(path))
6284 			path = "";
6285 		error = got_worktree_resolve_path(&p, worktree, path);
6286 		if (error)
6287 			goto done;
6288 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
6289 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
6290 		    p) == -1) {
6291 			error = got_error_from_errno("asprintf");
6292 			free(p);
6293 			goto done;
6294 		}
6295 		free(p);
6296 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6297 		if (error)
6298 			goto done;
6299 	} else {
6300 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6301 		if (error)
6302 			goto done;
6303 		if (path == NULL)
6304 			path = "/";
6305 		error = got_repo_map_path(&in_repo_path, repo, path);
6306 		if (error != NULL)
6307 			goto done;
6308 	}
6309 
6310 	if (commit_id_str == NULL) {
6311 		struct got_reference *head_ref;
6312 		if (worktree)
6313 			refname = got_worktree_get_head_ref_name(worktree);
6314 		else
6315 			refname = GOT_REF_HEAD;
6316 		error = got_ref_open(&head_ref, repo, refname, 0);
6317 		if (error != NULL)
6318 			goto done;
6319 		error = got_ref_resolve(&commit_id, repo, head_ref);
6320 		got_ref_close(head_ref);
6321 		if (error != NULL)
6322 			goto done;
6323 	} else {
6324 		struct got_reflist_head refs;
6325 
6326 		TAILQ_INIT(&refs);
6327 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6328 		    NULL);
6329 		if (error)
6330 			goto done;
6331 
6332 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
6333 		    repo, worktree);
6334 		if (error != NULL)
6335 			goto done;
6336 		if (keyword_idstr != NULL)
6337 			commit_id_str = keyword_idstr;
6338 
6339 		error = got_repo_match_object_id(&commit_id, NULL,
6340 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6341 		got_ref_list_free(&refs);
6342 		if (error)
6343 			goto done;
6344 	}
6345 
6346 	if (worktree) {
6347 		/* Release work tree lock. */
6348 		got_worktree_close(worktree);
6349 		worktree = NULL;
6350 	}
6351 
6352 	error = got_object_open_as_commit(&commit, repo, commit_id);
6353 	if (error)
6354 		goto done;
6355 
6356 	error = print_tree(in_repo_path, commit, show_ids, recurse,
6357 	    in_repo_path, repo);
6358 done:
6359 	free(keyword_idstr);
6360 	free(in_repo_path);
6361 	free(repo_path);
6362 	free(cwd);
6363 	free(commit_id);
6364 	if (commit)
6365 		got_object_commit_close(commit);
6366 	if (worktree)
6367 		got_worktree_close(worktree);
6368 	if (repo) {
6369 		const struct got_error *close_err = got_repo_close(repo);
6370 		if (error == NULL)
6371 			error = close_err;
6372 	}
6373 	if (pack_fds) {
6374 		const struct got_error *pack_err =
6375 		    got_repo_pack_fds_close(pack_fds);
6376 		if (error == NULL)
6377 			error = pack_err;
6378 	}
6379 	return error;
6380 }
6381 
6382 __dead static void
6383 usage_status(void)
6384 {
6385 	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
6386 	    "[-s status-codes] [path ...]\n", getprogname());
6387 	exit(1);
6388 }
6389 
6390 struct got_status_arg {
6391 	char *status_codes;
6392 	int suppress;
6393 };
6394 
6395 static const struct got_error *
6396 print_status(void *arg, unsigned char status, unsigned char staged_status,
6397     const char *path, struct got_object_id *blob_id,
6398     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
6399     int dirfd, const char *de_name)
6400 {
6401 	struct got_status_arg *st = arg;
6402 
6403 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6404 		status = GOT_STATUS_NO_CHANGE;
6405 	if (st != NULL && st->status_codes) {
6406 		size_t ncodes = strlen(st->status_codes);
6407 		int i, j = 0;
6408 
6409 		for (i = 0; i < ncodes ; i++) {
6410 			if (st->suppress) {
6411 				if (status == st->status_codes[i] ||
6412 				    staged_status == st->status_codes[i]) {
6413 					j++;
6414 					continue;
6415 				}
6416 			} else {
6417 				if (status == st->status_codes[i] ||
6418 				    staged_status == st->status_codes[i])
6419 					break;
6420 			}
6421 		}
6422 
6423 		if (st->suppress && j == 0)
6424 			goto print;
6425 
6426 		if (i == ncodes)
6427 			return NULL;
6428 	}
6429 print:
6430 	printf("%c%c %s\n", status, staged_status, path);
6431 	return NULL;
6432 }
6433 
6434 static const struct got_error *
6435 show_operation_in_progress(struct got_worktree *worktree,
6436     struct got_repository *repo)
6437 {
6438 	const struct got_error *err;
6439 	char *new_base_branch_name = NULL;
6440 	char *branch_name = NULL;
6441 	int rebase_in_progress, histedit_in_progress, merge_in_progress;
6442 
6443 	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
6444 	if (err)
6445 		return err;
6446 	if (rebase_in_progress) {
6447 		err = got_worktree_rebase_info(&new_base_branch_name,
6448 		    &branch_name, worktree, repo);
6449 		if (err)
6450 			return err;
6451 		printf("Work tree is rebasing %s onto %s\n",
6452 		    branch_name, new_base_branch_name);
6453 	}
6454 
6455 	err = got_worktree_histedit_in_progress(&histedit_in_progress,
6456 	    worktree);
6457 	if (err)
6458 		return err;
6459 	if (histedit_in_progress) {
6460 		err = got_worktree_histedit_info(&branch_name, worktree, repo);
6461 		if (err)
6462 			return err;
6463 		printf("Work tree is editing the history of %s\n", branch_name);
6464 	}
6465 
6466 	err = got_worktree_merge_in_progress(&merge_in_progress,
6467 	    worktree, repo);
6468 	if (err)
6469 		return err;
6470 	if (merge_in_progress) {
6471 		err = got_worktree_merge_info(&branch_name, worktree,
6472 		    repo);
6473 		if (err)
6474 			return err;
6475 		printf("Work tree is merging %s into %s\n", branch_name,
6476 		    got_worktree_get_head_ref_name(worktree));
6477 	}
6478 
6479 	free(new_base_branch_name);
6480 	free(branch_name);
6481 	return NULL;
6482 }
6483 
6484 static const struct got_error *
6485 cmd_status(int argc, char *argv[])
6486 {
6487 	const struct got_error *close_err, *error = NULL;
6488 	struct got_repository *repo = NULL;
6489 	struct got_worktree *worktree = NULL;
6490 	struct got_status_arg st;
6491 	char *cwd = NULL;
6492 	struct got_pathlist_head paths;
6493 	int ch, i, no_ignores = 0;
6494 	int *pack_fds = NULL;
6495 
6496 	TAILQ_INIT(&paths);
6497 
6498 	memset(&st, 0, sizeof(st));
6499 	st.status_codes = NULL;
6500 	st.suppress = 0;
6501 
6502 #ifndef PROFILE
6503 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6504 	    NULL) == -1)
6505 		err(1, "pledge");
6506 #endif
6507 
6508 	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
6509 		switch (ch) {
6510 		case 'I':
6511 			no_ignores = 1;
6512 			break;
6513 		case 'S':
6514 			if (st.status_codes != NULL && st.suppress == 0)
6515 				option_conflict('S', 's');
6516 			st.suppress = 1;
6517 			/* fallthrough */
6518 		case 's':
6519 			for (i = 0; optarg[i] != '\0'; i++) {
6520 				switch (optarg[i]) {
6521 				case GOT_STATUS_MODIFY:
6522 				case GOT_STATUS_ADD:
6523 				case GOT_STATUS_DELETE:
6524 				case GOT_STATUS_CONFLICT:
6525 				case GOT_STATUS_MISSING:
6526 				case GOT_STATUS_OBSTRUCTED:
6527 				case GOT_STATUS_UNVERSIONED:
6528 				case GOT_STATUS_MODE_CHANGE:
6529 				case GOT_STATUS_NONEXISTENT:
6530 					break;
6531 				default:
6532 					errx(1, "invalid status code '%c'",
6533 					    optarg[i]);
6534 				}
6535 			}
6536 			if (ch == 's' && st.suppress)
6537 				option_conflict('s', 'S');
6538 			st.status_codes = optarg;
6539 			break;
6540 		default:
6541 			usage_status();
6542 			/* NOTREACHED */
6543 		}
6544 	}
6545 
6546 	argc -= optind;
6547 	argv += optind;
6548 
6549 	cwd = getcwd(NULL, 0);
6550 	if (cwd == NULL) {
6551 		error = got_error_from_errno("getcwd");
6552 		goto done;
6553 	}
6554 
6555 	error = got_repo_pack_fds_open(&pack_fds);
6556 	if (error != NULL)
6557 		goto done;
6558 
6559 	error = got_worktree_open(&worktree, cwd,
6560 	    GOT_WORKTREE_GOT_DIR);
6561 	if (error) {
6562 		if (error->code == GOT_ERR_NOT_WORKTREE)
6563 			error = wrap_not_worktree_error(error, "status", cwd);
6564 		goto done;
6565 	}
6566 
6567 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6568 	    NULL, pack_fds);
6569 	if (error != NULL)
6570 		goto done;
6571 
6572 	error = apply_unveil(got_repo_get_path(repo), 1,
6573 	    got_worktree_get_root_path(worktree));
6574 	if (error)
6575 		goto done;
6576 
6577 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6578 	if (error)
6579 		goto done;
6580 
6581 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
6582 	    print_status, &st, check_cancelled, NULL);
6583 	if (error)
6584 		goto done;
6585 
6586 	error = show_operation_in_progress(worktree, repo);
6587 done:
6588 	if (pack_fds) {
6589 		const struct got_error *pack_err =
6590 		    got_repo_pack_fds_close(pack_fds);
6591 		if (error == NULL)
6592 			error = pack_err;
6593 	}
6594 	if (repo) {
6595 		close_err = got_repo_close(repo);
6596 		if (error == NULL)
6597 			error = close_err;
6598 	}
6599 	if (worktree != NULL) {
6600 		close_err = got_worktree_close(worktree);
6601 		if (error == NULL)
6602 			error = close_err;
6603 	}
6604 
6605 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6606 	free(cwd);
6607 	return error;
6608 }
6609 
6610 __dead static void
6611 usage_ref(void)
6612 {
6613 	fprintf(stderr, "usage: %s ref [-dlt] [-c object] [-r repository-path] "
6614 	    "[-s reference] [name]\n", getprogname());
6615 	exit(1);
6616 }
6617 
6618 static const struct got_error *
6619 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
6620 {
6621 	static const struct got_error *err = NULL;
6622 	struct got_reflist_head refs;
6623 	struct got_reflist_entry *re;
6624 
6625 	TAILQ_INIT(&refs);
6626 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
6627 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6628 	    repo);
6629 	if (err)
6630 		return err;
6631 
6632 	TAILQ_FOREACH(re, &refs, entry) {
6633 		char *refstr;
6634 		refstr = got_ref_to_str(re->ref);
6635 		if (refstr == NULL) {
6636 			err = got_error_from_errno("got_ref_to_str");
6637 			break;
6638 		}
6639 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
6640 		free(refstr);
6641 	}
6642 
6643 	got_ref_list_free(&refs);
6644 	return err;
6645 }
6646 
6647 static const struct got_error *
6648 delete_ref_by_name(struct got_repository *repo, const char *refname)
6649 {
6650 	const struct got_error *err;
6651 	struct got_reference *ref;
6652 
6653 	err = got_ref_open(&ref, repo, refname, 0);
6654 	if (err)
6655 		return err;
6656 
6657 	err = delete_ref(repo, ref);
6658 	got_ref_close(ref);
6659 	return err;
6660 }
6661 
6662 static const struct got_error *
6663 add_ref(struct got_repository *repo, const char *refname, const char *target)
6664 {
6665 	const struct got_error *err = NULL;
6666 	struct got_object_id *id = NULL;
6667 	struct got_reference *ref = NULL;
6668 	struct got_reflist_head refs;
6669 
6670 	/*
6671 	 * Don't let the user create a reference name with a leading '-'.
6672 	 * While technically a valid reference name, this case is usually
6673 	 * an unintended typo.
6674 	 */
6675 	if (refname[0] == '-')
6676 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6677 
6678 	TAILQ_INIT(&refs);
6679 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6680 	if (err)
6681 		goto done;
6682 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
6683 	    &refs, repo);
6684 	got_ref_list_free(&refs);
6685 	if (err)
6686 		goto done;
6687 
6688 	err = got_ref_alloc(&ref, refname, id);
6689 	if (err)
6690 		goto done;
6691 
6692 	err = got_ref_write(ref, repo);
6693 done:
6694 	if (ref)
6695 		got_ref_close(ref);
6696 	free(id);
6697 	return err;
6698 }
6699 
6700 static const struct got_error *
6701 add_symref(struct got_repository *repo, const char *refname, const char *target)
6702 {
6703 	const struct got_error *err = NULL;
6704 	struct got_reference *ref = NULL;
6705 	struct got_reference *target_ref = NULL;
6706 
6707 	/*
6708 	 * Don't let the user create a reference name with a leading '-'.
6709 	 * While technically a valid reference name, this case is usually
6710 	 * an unintended typo.
6711 	 */
6712 	if (refname[0] == '-')
6713 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6714 
6715 	err = got_ref_open(&target_ref, repo, target, 0);
6716 	if (err)
6717 		return err;
6718 
6719 	err = got_ref_alloc_symref(&ref, refname, target_ref);
6720 	if (err)
6721 		goto done;
6722 
6723 	err = got_ref_write(ref, repo);
6724 done:
6725 	if (target_ref)
6726 		got_ref_close(target_ref);
6727 	if (ref)
6728 		got_ref_close(ref);
6729 	return err;
6730 }
6731 
6732 static const struct got_error *
6733 cmd_ref(int argc, char *argv[])
6734 {
6735 	const struct got_error *error = NULL;
6736 	struct got_repository *repo = NULL;
6737 	struct got_worktree *worktree = NULL;
6738 	char *cwd = NULL, *repo_path = NULL;
6739 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
6740 	const char *obj_arg = NULL, *symref_target= NULL;
6741 	char *refname = NULL, *keyword_idstr = NULL;
6742 	int *pack_fds = NULL;
6743 
6744 #ifndef PROFILE
6745 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6746 	    "sendfd unveil", NULL) == -1)
6747 		err(1, "pledge");
6748 #endif
6749 
6750 	while ((ch = getopt(argc, argv, "c:dlr:s:t")) != -1) {
6751 		switch (ch) {
6752 		case 'c':
6753 			obj_arg = optarg;
6754 			break;
6755 		case 'd':
6756 			do_delete = 1;
6757 			break;
6758 		case 'l':
6759 			do_list = 1;
6760 			break;
6761 		case 'r':
6762 			repo_path = realpath(optarg, NULL);
6763 			if (repo_path == NULL)
6764 				return got_error_from_errno2("realpath",
6765 				    optarg);
6766 			got_path_strip_trailing_slashes(repo_path);
6767 			break;
6768 		case 's':
6769 			symref_target = optarg;
6770 			break;
6771 		case 't':
6772 			sort_by_time = 1;
6773 			break;
6774 		default:
6775 			usage_ref();
6776 			/* NOTREACHED */
6777 		}
6778 	}
6779 
6780 	if (obj_arg && do_list)
6781 		option_conflict('c', 'l');
6782 	if (obj_arg && do_delete)
6783 		option_conflict('c', 'd');
6784 	if (obj_arg && symref_target)
6785 		option_conflict('c', 's');
6786 	if (symref_target && do_delete)
6787 		option_conflict('s', 'd');
6788 	if (symref_target && do_list)
6789 		option_conflict('s', 'l');
6790 	if (do_delete && do_list)
6791 		option_conflict('d', 'l');
6792 	if (sort_by_time && !do_list)
6793 		errx(1, "-t option requires -l option");
6794 
6795 	argc -= optind;
6796 	argv += optind;
6797 
6798 	if (do_list) {
6799 		if (argc != 0 && argc != 1)
6800 			usage_ref();
6801 		if (argc == 1) {
6802 			refname = strdup(argv[0]);
6803 			if (refname == NULL) {
6804 				error = got_error_from_errno("strdup");
6805 				goto done;
6806 			}
6807 		}
6808 	} else {
6809 		if (argc != 1)
6810 			usage_ref();
6811 		refname = strdup(argv[0]);
6812 		if (refname == NULL) {
6813 			error = got_error_from_errno("strdup");
6814 			goto done;
6815 		}
6816 	}
6817 
6818 	if (refname)
6819 		got_path_strip_trailing_slashes(refname);
6820 
6821 	cwd = getcwd(NULL, 0);
6822 	if (cwd == NULL) {
6823 		error = got_error_from_errno("getcwd");
6824 		goto done;
6825 	}
6826 
6827 	error = got_repo_pack_fds_open(&pack_fds);
6828 	if (error != NULL)
6829 		goto done;
6830 
6831 	if (repo_path == NULL) {
6832 		error = got_worktree_open(&worktree, cwd,
6833 		    GOT_WORKTREE_GOT_DIR);
6834 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6835 			goto done;
6836 		else
6837 			error = NULL;
6838 		if (worktree) {
6839 			repo_path =
6840 			    strdup(got_worktree_get_repo_path(worktree));
6841 			if (repo_path == NULL)
6842 				error = got_error_from_errno("strdup");
6843 			if (error)
6844 				goto done;
6845 		} else {
6846 			repo_path = strdup(cwd);
6847 			if (repo_path == NULL) {
6848 				error = got_error_from_errno("strdup");
6849 				goto done;
6850 			}
6851 		}
6852 	}
6853 
6854 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6855 	if (error != NULL)
6856 		goto done;
6857 
6858 #ifndef PROFILE
6859 	if (do_list) {
6860 		/* Remove "cpath" promise. */
6861 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6862 		    NULL) == -1)
6863 			err(1, "pledge");
6864 	}
6865 #endif
6866 
6867 	error = apply_unveil(got_repo_get_path(repo), do_list,
6868 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6869 	if (error)
6870 		goto done;
6871 
6872 	if (do_list)
6873 		error = list_refs(repo, refname, sort_by_time);
6874 	else if (do_delete)
6875 		error = delete_ref_by_name(repo, refname);
6876 	else if (symref_target)
6877 		error = add_symref(repo, refname, symref_target);
6878 	else {
6879 		if (obj_arg == NULL)
6880 			usage_ref();
6881 
6882 		error = got_keyword_to_idstr(&keyword_idstr, obj_arg,
6883 		    repo, worktree);
6884 		if (error != NULL)
6885 			goto done;
6886 		if (keyword_idstr != NULL)
6887 			obj_arg = keyword_idstr;
6888 
6889 		error = add_ref(repo, refname, obj_arg);
6890 	}
6891 done:
6892 	free(refname);
6893 	if (repo) {
6894 		const struct got_error *close_err = got_repo_close(repo);
6895 		if (error == NULL)
6896 			error = close_err;
6897 	}
6898 	if (worktree)
6899 		got_worktree_close(worktree);
6900 	if (pack_fds) {
6901 		const struct got_error *pack_err =
6902 		    got_repo_pack_fds_close(pack_fds);
6903 		if (error == NULL)
6904 			error = pack_err;
6905 	}
6906 	free(cwd);
6907 	free(repo_path);
6908 	free(keyword_idstr);
6909 	return error;
6910 }
6911 
6912 __dead static void
6913 usage_branch(void)
6914 {
6915 	fprintf(stderr, "usage: %s branch [-lnt] [-c commit] [-d name] "
6916 	    "[-r repository-path] [name]\n", getprogname());
6917 	exit(1);
6918 }
6919 
6920 static const struct got_error *
6921 list_branch(struct got_repository *repo, struct got_worktree *worktree,
6922     struct got_reference *ref)
6923 {
6924 	const struct got_error *err = NULL;
6925 	const char *refname;
6926 	char *refstr;
6927 	char marker = ' ';
6928 
6929 	refname = got_ref_get_name(ref);
6930 	if (worktree && strcmp(refname,
6931 	    got_worktree_get_head_ref_name(worktree)) == 0) {
6932 		err = got_worktree_get_state(&marker, repo, worktree,
6933 		    check_cancelled, NULL);
6934 		if (err != NULL)
6935 			return err;
6936 	}
6937 
6938 	if (strncmp(refname, "refs/heads/", 11) == 0)
6939 		refname += 11;
6940 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6941 		refname += 18;
6942 	if (strncmp(refname, "refs/remotes/", 13) == 0)
6943 		refname += 13;
6944 
6945 	refstr = got_ref_to_str(ref);
6946 	if (refstr == NULL)
6947 		return got_error_from_errno("got_ref_to_str");
6948 
6949 	printf("%c %s: %s\n", marker, refname, refstr);
6950 	free(refstr);
6951 	return NULL;
6952 }
6953 
6954 static const struct got_error *
6955 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
6956 {
6957 	const char *refname;
6958 
6959 	if (worktree == NULL)
6960 		return got_error(GOT_ERR_NOT_WORKTREE);
6961 
6962 	refname = got_worktree_get_head_ref_name(worktree);
6963 
6964 	if (strncmp(refname, "refs/heads/", 11) == 0)
6965 		refname += 11;
6966 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6967 		refname += 18;
6968 
6969 	printf("%s\n", refname);
6970 
6971 	return NULL;
6972 }
6973 
6974 static const struct got_error *
6975 list_branches(struct got_repository *repo, struct got_worktree *worktree,
6976     int sort_by_time)
6977 {
6978 	static const struct got_error *err = NULL;
6979 	struct got_reflist_head refs;
6980 	struct got_reflist_entry *re;
6981 	struct got_reference *temp_ref = NULL;
6982 	int rebase_in_progress, histedit_in_progress;
6983 
6984 	TAILQ_INIT(&refs);
6985 
6986 	if (worktree) {
6987 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
6988 		    worktree);
6989 		if (err)
6990 			return err;
6991 
6992 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
6993 		    worktree);
6994 		if (err)
6995 			return err;
6996 
6997 		if (rebase_in_progress || histedit_in_progress) {
6998 			err = got_ref_open(&temp_ref, repo,
6999 			    got_worktree_get_head_ref_name(worktree), 0);
7000 			if (err)
7001 				return err;
7002 			list_branch(repo, worktree, temp_ref);
7003 			got_ref_close(temp_ref);
7004 		}
7005 	}
7006 
7007 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
7008 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
7009 	    repo);
7010 	if (err)
7011 		return err;
7012 
7013 	TAILQ_FOREACH(re, &refs, entry)
7014 		list_branch(repo, worktree, re->ref);
7015 
7016 	got_ref_list_free(&refs);
7017 
7018 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
7019 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
7020 	    repo);
7021 	if (err)
7022 		return err;
7023 
7024 	TAILQ_FOREACH(re, &refs, entry)
7025 		list_branch(repo, worktree, re->ref);
7026 
7027 	got_ref_list_free(&refs);
7028 
7029 	return NULL;
7030 }
7031 
7032 static const struct got_error *
7033 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
7034     const char *branch_name)
7035 {
7036 	const struct got_error *err = NULL;
7037 	struct got_reference *ref = NULL;
7038 	char *refname, *remote_refname = NULL;
7039 
7040 	if (strncmp(branch_name, "refs/", 5) == 0)
7041 		branch_name += 5;
7042 	if (strncmp(branch_name, "heads/", 6) == 0)
7043 		branch_name += 6;
7044 	else if (strncmp(branch_name, "remotes/", 8) == 0)
7045 		branch_name += 8;
7046 
7047 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
7048 		return got_error_from_errno("asprintf");
7049 
7050 	if (asprintf(&remote_refname, "refs/remotes/%s",
7051 	    branch_name) == -1) {
7052 		err = got_error_from_errno("asprintf");
7053 		goto done;
7054 	}
7055 
7056 	err = got_ref_open(&ref, repo, refname, 0);
7057 	if (err) {
7058 		const struct got_error *err2;
7059 		if (err->code != GOT_ERR_NOT_REF)
7060 			goto done;
7061 		/*
7062 		 * Keep 'err' intact such that if neither branch exists
7063 		 * we report "refs/heads" rather than "refs/remotes" in
7064 		 * our error message.
7065 		 */
7066 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
7067 		if (err2)
7068 			goto done;
7069 		err = NULL;
7070 	}
7071 
7072 	if (worktree &&
7073 	    strcmp(got_worktree_get_head_ref_name(worktree),
7074 	    got_ref_get_name(ref)) == 0) {
7075 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
7076 		    "will not delete this work tree's current branch");
7077 		goto done;
7078 	}
7079 
7080 	err = delete_ref(repo, ref);
7081 done:
7082 	if (ref)
7083 		got_ref_close(ref);
7084 	free(refname);
7085 	free(remote_refname);
7086 	return err;
7087 }
7088 
7089 static const struct got_error *
7090 add_branch(struct got_repository *repo, const char *branch_name,
7091     struct got_object_id *base_commit_id)
7092 {
7093 	const struct got_error *err = NULL;
7094 	struct got_reference *ref = NULL;
7095 	char *refname = NULL;
7096 
7097 	/*
7098 	 * Don't let the user create a branch name with a leading '-'.
7099 	 * While technically a valid reference name, this case is usually
7100 	 * an unintended typo.
7101 	 */
7102 	if (branch_name[0] == '-')
7103 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
7104 
7105 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
7106 		branch_name += 11;
7107 
7108 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
7109 		err = got_error_from_errno("asprintf");
7110 		goto done;
7111 	}
7112 
7113 	err = got_ref_open(&ref, repo, refname, 0);
7114 	if (err == NULL) {
7115 		err = got_error(GOT_ERR_BRANCH_EXISTS);
7116 		goto done;
7117 	} else if (err->code != GOT_ERR_NOT_REF)
7118 		goto done;
7119 
7120 	err = got_ref_alloc(&ref, refname, base_commit_id);
7121 	if (err)
7122 		goto done;
7123 
7124 	err = got_ref_write(ref, repo);
7125 done:
7126 	if (ref)
7127 		got_ref_close(ref);
7128 	free(refname);
7129 	return err;
7130 }
7131 
7132 static const struct got_error *
7133 cmd_branch(int argc, char *argv[])
7134 {
7135 	const struct got_error *error = NULL;
7136 	struct got_repository *repo = NULL;
7137 	struct got_worktree *worktree = NULL;
7138 	char *cwd = NULL, *repo_path = NULL;
7139 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
7140 	const char *delref = NULL, *commit_id_arg = NULL;
7141 	struct got_reference *ref = NULL;
7142 	struct got_pathlist_head paths;
7143 	struct got_object_id *commit_id = NULL;
7144 	char *commit_id_str = NULL, *keyword_idstr = NULL;;
7145 	int *pack_fds = NULL;
7146 
7147 	TAILQ_INIT(&paths);
7148 
7149 #ifndef PROFILE
7150 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7151 	    "sendfd unveil", NULL) == -1)
7152 		err(1, "pledge");
7153 #endif
7154 
7155 	while ((ch = getopt(argc, argv, "c:d:lnr:t")) != -1) {
7156 		switch (ch) {
7157 		case 'c':
7158 			commit_id_arg = optarg;
7159 			break;
7160 		case 'd':
7161 			delref = optarg;
7162 			break;
7163 		case 'l':
7164 			do_list = 1;
7165 			break;
7166 		case 'n':
7167 			do_update = 0;
7168 			break;
7169 		case 'r':
7170 			repo_path = realpath(optarg, NULL);
7171 			if (repo_path == NULL)
7172 				return got_error_from_errno2("realpath",
7173 				    optarg);
7174 			got_path_strip_trailing_slashes(repo_path);
7175 			break;
7176 		case 't':
7177 			sort_by_time = 1;
7178 			break;
7179 		default:
7180 			usage_branch();
7181 			/* NOTREACHED */
7182 		}
7183 	}
7184 
7185 	if (do_list && delref)
7186 		option_conflict('l', 'd');
7187 	if (sort_by_time && !do_list)
7188 		errx(1, "-t option requires -l option");
7189 
7190 	argc -= optind;
7191 	argv += optind;
7192 
7193 	if (!do_list && !delref && argc == 0)
7194 		do_show = 1;
7195 
7196 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
7197 		errx(1, "-c option can only be used when creating a branch");
7198 
7199 	if (do_list || delref) {
7200 		if (argc > 0)
7201 			usage_branch();
7202 	} else if (!do_show && argc != 1)
7203 		usage_branch();
7204 
7205 	cwd = getcwd(NULL, 0);
7206 	if (cwd == NULL) {
7207 		error = got_error_from_errno("getcwd");
7208 		goto done;
7209 	}
7210 
7211 	error = got_repo_pack_fds_open(&pack_fds);
7212 	if (error != NULL)
7213 		goto done;
7214 
7215 	if (repo_path == NULL) {
7216 		error = got_worktree_open(&worktree, cwd,
7217 		    GOT_WORKTREE_GOT_DIR);
7218 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7219 			goto done;
7220 		else
7221 			error = NULL;
7222 		if (worktree) {
7223 			repo_path =
7224 			    strdup(got_worktree_get_repo_path(worktree));
7225 			if (repo_path == NULL)
7226 				error = got_error_from_errno("strdup");
7227 			if (error)
7228 				goto done;
7229 		} else {
7230 			repo_path = strdup(cwd);
7231 			if (repo_path == NULL) {
7232 				error = got_error_from_errno("strdup");
7233 				goto done;
7234 			}
7235 		}
7236 	}
7237 
7238 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7239 	if (error != NULL)
7240 		goto done;
7241 
7242 #ifndef PROFILE
7243 	if (do_list || do_show) {
7244 		/* Remove "cpath" promise. */
7245 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
7246 		    NULL) == -1)
7247 			err(1, "pledge");
7248 	}
7249 #endif
7250 
7251 	error = apply_unveil(got_repo_get_path(repo), do_list,
7252 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
7253 	if (error)
7254 		goto done;
7255 
7256 	if (do_show)
7257 		error = show_current_branch(repo, worktree);
7258 	else if (do_list)
7259 		error = list_branches(repo, worktree, sort_by_time);
7260 	else if (delref)
7261 		error = delete_branch(repo, worktree, delref);
7262 	else {
7263 		struct got_reflist_head refs;
7264 		TAILQ_INIT(&refs);
7265 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
7266 		    NULL);
7267 		if (error)
7268 			goto done;
7269 		if (commit_id_arg == NULL)
7270 			commit_id_arg = worktree ?
7271 			    got_worktree_get_head_ref_name(worktree) :
7272 			    GOT_REF_HEAD;
7273 		else {
7274 			error = got_keyword_to_idstr(&keyword_idstr,
7275 			    commit_id_arg, repo, worktree);
7276 			if (error != NULL)
7277 				goto done;
7278 			if (keyword_idstr != NULL)
7279 				commit_id_arg = keyword_idstr;
7280 		}
7281 		error = got_repo_match_object_id(&commit_id, NULL,
7282 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
7283 		got_ref_list_free(&refs);
7284 		if (error)
7285 			goto done;
7286 		error = add_branch(repo, argv[0], commit_id);
7287 		if (error)
7288 			goto done;
7289 		if (worktree && do_update) {
7290 			struct got_update_progress_arg upa;
7291 			char *branch_refname = NULL;
7292 
7293 			error = got_object_id_str(&commit_id_str, commit_id);
7294 			if (error)
7295 				goto done;
7296 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
7297 			    worktree);
7298 			if (error)
7299 				goto done;
7300 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
7301 			    == -1) {
7302 				error = got_error_from_errno("asprintf");
7303 				goto done;
7304 			}
7305 			error = got_ref_open(&ref, repo, branch_refname, 0);
7306 			free(branch_refname);
7307 			if (error)
7308 				goto done;
7309 			error = switch_head_ref(ref, commit_id, worktree,
7310 			    repo);
7311 			if (error)
7312 				goto done;
7313 			error = got_worktree_set_base_commit_id(worktree, repo,
7314 			    commit_id);
7315 			if (error)
7316 				goto done;
7317 			memset(&upa, 0, sizeof(upa));
7318 			error = got_worktree_checkout_files(worktree, &paths,
7319 			    repo, update_progress, &upa, check_cancelled,
7320 			    NULL);
7321 			if (error)
7322 				goto done;
7323 			if (upa.did_something) {
7324 				printf("Updated to %s: %s\n",
7325 				    got_worktree_get_head_ref_name(worktree),
7326 				    commit_id_str);
7327 			}
7328 			print_update_progress_stats(&upa);
7329 		}
7330 	}
7331 done:
7332 	free(keyword_idstr);
7333 	if (ref)
7334 		got_ref_close(ref);
7335 	if (repo) {
7336 		const struct got_error *close_err = got_repo_close(repo);
7337 		if (error == NULL)
7338 			error = close_err;
7339 	}
7340 	if (worktree)
7341 		got_worktree_close(worktree);
7342 	if (pack_fds) {
7343 		const struct got_error *pack_err =
7344 		    got_repo_pack_fds_close(pack_fds);
7345 		if (error == NULL)
7346 			error = pack_err;
7347 	}
7348 	free(cwd);
7349 	free(repo_path);
7350 	free(commit_id);
7351 	free(commit_id_str);
7352 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7353 	return error;
7354 }
7355 
7356 
7357 __dead static void
7358 usage_tag(void)
7359 {
7360 	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
7361 	    "[-r repository-path] [-s signer-id] name\n", getprogname());
7362 	exit(1);
7363 }
7364 
7365 #if 0
7366 static const struct got_error *
7367 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
7368 {
7369 	const struct got_error *err = NULL;
7370 	struct got_reflist_entry *re, *se, *new;
7371 	struct got_object_id *re_id, *se_id;
7372 	struct got_tag_object *re_tag, *se_tag;
7373 	time_t re_time, se_time;
7374 
7375 	STAILQ_FOREACH(re, tags, entry) {
7376 		se = STAILQ_FIRST(sorted);
7377 		if (se == NULL) {
7378 			err = got_reflist_entry_dup(&new, re);
7379 			if (err)
7380 				return err;
7381 			STAILQ_INSERT_HEAD(sorted, new, entry);
7382 			continue;
7383 		} else {
7384 			err = got_ref_resolve(&re_id, repo, re->ref);
7385 			if (err)
7386 				break;
7387 			err = got_object_open_as_tag(&re_tag, repo, re_id);
7388 			free(re_id);
7389 			if (err)
7390 				break;
7391 			re_time = got_object_tag_get_tagger_time(re_tag);
7392 			got_object_tag_close(re_tag);
7393 		}
7394 
7395 		while (se) {
7396 			err = got_ref_resolve(&se_id, repo, re->ref);
7397 			if (err)
7398 				break;
7399 			err = got_object_open_as_tag(&se_tag, repo, se_id);
7400 			free(se_id);
7401 			if (err)
7402 				break;
7403 			se_time = got_object_tag_get_tagger_time(se_tag);
7404 			got_object_tag_close(se_tag);
7405 
7406 			if (se_time > re_time) {
7407 				err = got_reflist_entry_dup(&new, re);
7408 				if (err)
7409 					return err;
7410 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
7411 				break;
7412 			}
7413 			se = STAILQ_NEXT(se, entry);
7414 			continue;
7415 		}
7416 	}
7417 done:
7418 	return err;
7419 }
7420 #endif
7421 
7422 static const struct got_error *
7423 get_tag_refname(char **refname, const char *tag_name)
7424 {
7425 	const struct got_error *err;
7426 
7427 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
7428 		*refname = strdup(tag_name);
7429 		if (*refname == NULL)
7430 			return got_error_from_errno("strdup");
7431 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
7432 		err = got_error_from_errno("asprintf");
7433 		*refname = NULL;
7434 		return err;
7435 	}
7436 
7437 	return NULL;
7438 }
7439 
7440 static const struct got_error *
7441 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
7442     const char *allowed_signers, const char *revoked_signers, int verbosity)
7443 {
7444 	static const struct got_error *err = NULL;
7445 	struct got_reflist_head refs;
7446 	struct got_reflist_entry *re;
7447 	char *wanted_refname = NULL;
7448 	int bad_sigs = 0;
7449 
7450 	TAILQ_INIT(&refs);
7451 
7452 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
7453 	if (err)
7454 		return err;
7455 
7456 	if (tag_name) {
7457 		struct got_reference *ref;
7458 		err = get_tag_refname(&wanted_refname, tag_name);
7459 		if (err)
7460 			goto done;
7461 		/* Wanted tag reference should exist. */
7462 		err = got_ref_open(&ref, repo, wanted_refname, 0);
7463 		if (err)
7464 			goto done;
7465 		got_ref_close(ref);
7466 	}
7467 
7468 	TAILQ_FOREACH(re, &refs, entry) {
7469 		const char *refname;
7470 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
7471 		char datebuf[26];
7472 		const char *tagger, *ssh_sig = NULL;
7473 		char *sig_msg = NULL;
7474 		time_t tagger_time;
7475 		struct got_object_id *id;
7476 		struct got_tag_object *tag;
7477 		struct got_commit_object *commit = NULL;
7478 
7479 		refname = got_ref_get_name(re->ref);
7480 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
7481 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
7482 			continue;
7483 		refname += 10;
7484 		refstr = got_ref_to_str(re->ref);
7485 		if (refstr == NULL) {
7486 			err = got_error_from_errno("got_ref_to_str");
7487 			break;
7488 		}
7489 
7490 		err = got_ref_resolve(&id, repo, re->ref);
7491 		if (err)
7492 			break;
7493 		err = got_object_open_as_tag(&tag, repo, id);
7494 		if (err) {
7495 			if (err->code != GOT_ERR_OBJ_TYPE) {
7496 				free(id);
7497 				break;
7498 			}
7499 			/* "lightweight" tag */
7500 			err = got_object_open_as_commit(&commit, repo, id);
7501 			if (err) {
7502 				free(id);
7503 				break;
7504 			}
7505 			tagger = got_object_commit_get_committer(commit);
7506 			tagger_time =
7507 			    got_object_commit_get_committer_time(commit);
7508 			err = got_object_id_str(&id_str, id);
7509 			free(id);
7510 			if (err)
7511 				break;
7512 		} else {
7513 			free(id);
7514 			tagger = got_object_tag_get_tagger(tag);
7515 			tagger_time = got_object_tag_get_tagger_time(tag);
7516 			err = got_object_id_str(&id_str,
7517 			    got_object_tag_get_object_id(tag));
7518 			if (err)
7519 				break;
7520 		}
7521 
7522 		if (tag && verify_tags) {
7523 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
7524 			    got_object_tag_get_message(tag));
7525 			if (ssh_sig && allowed_signers == NULL) {
7526 				err = got_error_msg(
7527 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
7528 				    "SSH signature verification requires "
7529 				        "setting allowed_signers in "
7530 				        "got.conf(5)");
7531 				break;
7532 			}
7533 		}
7534 
7535 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
7536 		free(refstr);
7537 		printf("from: %s\n", tagger);
7538 		datestr = get_datestr(&tagger_time, datebuf);
7539 		if (datestr)
7540 			printf("date: %s UTC\n", datestr);
7541 		if (commit)
7542 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
7543 		else {
7544 			switch (got_object_tag_get_object_type(tag)) {
7545 			case GOT_OBJ_TYPE_BLOB:
7546 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
7547 				    id_str);
7548 				break;
7549 			case GOT_OBJ_TYPE_TREE:
7550 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
7551 				    id_str);
7552 				break;
7553 			case GOT_OBJ_TYPE_COMMIT:
7554 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
7555 				    id_str);
7556 				break;
7557 			case GOT_OBJ_TYPE_TAG:
7558 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
7559 				    id_str);
7560 				break;
7561 			default:
7562 				break;
7563 			}
7564 		}
7565 		free(id_str);
7566 
7567 		if (ssh_sig) {
7568 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
7569 				allowed_signers, revoked_signers, verbosity);
7570 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
7571 				bad_sigs = 1;
7572 			else if (err)
7573 				break;
7574 			printf("signature: %s", sig_msg);
7575 			free(sig_msg);
7576 			sig_msg = NULL;
7577 		}
7578 
7579 		if (commit) {
7580 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
7581 			if (err)
7582 				break;
7583 			got_object_commit_close(commit);
7584 		} else {
7585 			tagmsg0 = strdup(got_object_tag_get_message(tag));
7586 			got_object_tag_close(tag);
7587 			if (tagmsg0 == NULL) {
7588 				err = got_error_from_errno("strdup");
7589 				break;
7590 			}
7591 		}
7592 
7593 		tagmsg = tagmsg0;
7594 		do {
7595 			line = strsep(&tagmsg, "\n");
7596 			if (line)
7597 				printf(" %s\n", line);
7598 		} while (line);
7599 		free(tagmsg0);
7600 	}
7601 done:
7602 	got_ref_list_free(&refs);
7603 	free(wanted_refname);
7604 
7605 	if (err == NULL && bad_sigs)
7606 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
7607 	return err;
7608 }
7609 
7610 static const struct got_error *
7611 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
7612     const char *tag_name, const char *editor, const char *repo_path)
7613 {
7614 	const struct got_error *err = NULL;
7615 	char *template = NULL, *initial_content = NULL;
7616 	int initial_content_len;
7617 	int fd = -1;
7618 
7619 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
7620 		err = got_error_from_errno("asprintf");
7621 		goto done;
7622 	}
7623 
7624 	initial_content_len = asprintf(&initial_content,
7625 	    "\n# tagging commit %s as %s\n",
7626 	    commit_id_str, tag_name);
7627 	if (initial_content_len == -1) {
7628 		err = got_error_from_errno("asprintf");
7629 		goto done;
7630 	}
7631 
7632 	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
7633 	if (err)
7634 		goto done;
7635 
7636 	if (write(fd, initial_content, initial_content_len) == -1) {
7637 		err = got_error_from_errno2("write", *tagmsg_path);
7638 		goto done;
7639 	}
7640 	if (close(fd) == -1) {
7641 		err = got_error_from_errno2("close", *tagmsg_path);
7642 		goto done;
7643 	}
7644 	fd = -1;
7645 
7646 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
7647 	    initial_content_len, 1);
7648 done:
7649 	free(initial_content);
7650 	free(template);
7651 
7652 	if (fd != -1 && close(fd) == -1 && err == NULL)
7653 		err = got_error_from_errno2("close", *tagmsg_path);
7654 
7655 	if (err) {
7656 		free(*tagmsg);
7657 		*tagmsg = NULL;
7658 	}
7659 	return err;
7660 }
7661 
7662 static const struct got_error *
7663 add_tag(struct got_repository *repo, const char *tagger,
7664     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
7665     const char *signer_id, const char *editor, int verbosity)
7666 {
7667 	const struct got_error *err = NULL;
7668 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
7669 	char *label = NULL, *commit_id_str = NULL;
7670 	struct got_reference *ref = NULL;
7671 	char *refname = NULL, *tagmsg = NULL;
7672 	char *tagmsg_path = NULL, *tag_id_str = NULL;
7673 	int preserve_tagmsg = 0;
7674 	struct got_reflist_head refs;
7675 
7676 	TAILQ_INIT(&refs);
7677 
7678 	/*
7679 	 * Don't let the user create a tag name with a leading '-'.
7680 	 * While technically a valid reference name, this case is usually
7681 	 * an unintended typo.
7682 	 */
7683 	if (tag_name[0] == '-')
7684 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
7685 
7686 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
7687 	if (err)
7688 		goto done;
7689 
7690 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
7691 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
7692 	if (err)
7693 		goto done;
7694 
7695 	err = got_object_id_str(&commit_id_str, commit_id);
7696 	if (err)
7697 		goto done;
7698 
7699 	err = get_tag_refname(&refname, tag_name);
7700 	if (err)
7701 		goto done;
7702 	if (strncmp("refs/tags/", tag_name, 10) == 0)
7703 		tag_name += 10;
7704 
7705 	err = got_ref_open(&ref, repo, refname, 0);
7706 	if (err == NULL) {
7707 		err = got_error(GOT_ERR_TAG_EXISTS);
7708 		goto done;
7709 	} else if (err->code != GOT_ERR_NOT_REF)
7710 		goto done;
7711 
7712 	if (tagmsg_arg == NULL) {
7713 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
7714 		    tag_name, editor, got_repo_get_path(repo));
7715 		if (err) {
7716 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7717 			    tagmsg_path != NULL)
7718 				preserve_tagmsg = 1;
7719 			goto done;
7720 		}
7721 	}
7722 
7723 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
7724 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
7725 	    verbosity);
7726 	if (err) {
7727 		if (tagmsg_path)
7728 			preserve_tagmsg = 1;
7729 		goto done;
7730 	}
7731 
7732 	err = got_ref_alloc(&ref, refname, tag_id);
7733 	if (err) {
7734 		if (tagmsg_path)
7735 			preserve_tagmsg = 1;
7736 		goto done;
7737 	}
7738 
7739 	err = got_ref_write(ref, repo);
7740 	if (err) {
7741 		if (tagmsg_path)
7742 			preserve_tagmsg = 1;
7743 		goto done;
7744 	}
7745 
7746 	err = got_object_id_str(&tag_id_str, tag_id);
7747 	if (err) {
7748 		if (tagmsg_path)
7749 			preserve_tagmsg = 1;
7750 		goto done;
7751 	}
7752 	printf("Created tag %s\n", tag_id_str);
7753 done:
7754 	if (preserve_tagmsg) {
7755 		fprintf(stderr, "%s: tag message preserved in %s\n",
7756 		    getprogname(), tagmsg_path);
7757 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
7758 		err = got_error_from_errno2("unlink", tagmsg_path);
7759 	free(tag_id_str);
7760 	if (ref)
7761 		got_ref_close(ref);
7762 	free(commit_id);
7763 	free(commit_id_str);
7764 	free(refname);
7765 	free(tagmsg);
7766 	free(tagmsg_path);
7767 	got_ref_list_free(&refs);
7768 	return err;
7769 }
7770 
7771 static const struct got_error *
7772 cmd_tag(int argc, char *argv[])
7773 {
7774 	const struct got_error *error = NULL;
7775 	struct got_repository *repo = NULL;
7776 	struct got_worktree *worktree = NULL;
7777 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
7778 	char *gitconfig_path = NULL, *tagger = NULL, *keyword_idstr = NULL;
7779 	char *allowed_signers = NULL, *revoked_signers = NULL, *editor = NULL;
7780 	const char *signer_id = NULL;
7781 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
7782 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
7783 	int *pack_fds = NULL;
7784 
7785 #ifndef PROFILE
7786 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7787 	    "sendfd unveil", NULL) == -1)
7788 		err(1, "pledge");
7789 #endif
7790 
7791 	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
7792 		switch (ch) {
7793 		case 'c':
7794 			commit_id_arg = optarg;
7795 			break;
7796 		case 'l':
7797 			do_list = 1;
7798 			break;
7799 		case 'm':
7800 			tagmsg = optarg;
7801 			break;
7802 		case 'r':
7803 			repo_path = realpath(optarg, NULL);
7804 			if (repo_path == NULL) {
7805 				error = got_error_from_errno2("realpath",
7806 				    optarg);
7807 				goto done;
7808 			}
7809 			got_path_strip_trailing_slashes(repo_path);
7810 			break;
7811 		case 's':
7812 			signer_id = optarg;
7813 			break;
7814 		case 'V':
7815 			verify_tags = 1;
7816 			break;
7817 		case 'v':
7818 			if (verbosity < 0)
7819 				verbosity = 0;
7820 			else if (verbosity < 3)
7821 				verbosity++;
7822 			break;
7823 		default:
7824 			usage_tag();
7825 			/* NOTREACHED */
7826 		}
7827 	}
7828 
7829 	argc -= optind;
7830 	argv += optind;
7831 
7832 	if (do_list || verify_tags) {
7833 		if (commit_id_arg != NULL)
7834 			errx(1,
7835 			    "-c option can only be used when creating a tag");
7836 		if (tagmsg) {
7837 			if (do_list)
7838 				option_conflict('l', 'm');
7839 			else
7840 				option_conflict('V', 'm');
7841 		}
7842 		if (signer_id) {
7843 			if (do_list)
7844 				option_conflict('l', 's');
7845 			else
7846 				option_conflict('V', 's');
7847 		}
7848 		if (argc > 1)
7849 			usage_tag();
7850 	} else if (argc != 1)
7851 		usage_tag();
7852 
7853 	if (argc == 1)
7854 		tag_name = argv[0];
7855 
7856 	cwd = getcwd(NULL, 0);
7857 	if (cwd == NULL) {
7858 		error = got_error_from_errno("getcwd");
7859 		goto done;
7860 	}
7861 
7862 	error = got_repo_pack_fds_open(&pack_fds);
7863 	if (error != NULL)
7864 		goto done;
7865 
7866 	if (repo_path == NULL) {
7867 		error = got_worktree_open(&worktree, cwd,
7868 		    GOT_WORKTREE_GOT_DIR);
7869 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7870 			goto done;
7871 		else
7872 			error = NULL;
7873 		if (worktree) {
7874 			repo_path =
7875 			    strdup(got_worktree_get_repo_path(worktree));
7876 			if (repo_path == NULL)
7877 				error = got_error_from_errno("strdup");
7878 			if (error)
7879 				goto done;
7880 		} else {
7881 			repo_path = strdup(cwd);
7882 			if (repo_path == NULL) {
7883 				error = got_error_from_errno("strdup");
7884 				goto done;
7885 			}
7886 		}
7887 	}
7888 
7889 	if (do_list || verify_tags) {
7890 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7891 		if (error != NULL)
7892 			goto done;
7893 		error = get_allowed_signers(&allowed_signers, repo, worktree);
7894 		if (error)
7895 			goto done;
7896 		error = get_revoked_signers(&revoked_signers, repo, worktree);
7897 		if (error)
7898 			goto done;
7899 		if (worktree) {
7900 			/* Release work tree lock. */
7901 			got_worktree_close(worktree);
7902 			worktree = NULL;
7903 		}
7904 
7905 		/*
7906 		 * Remove "cpath" promise unless needed for signature tmpfile
7907 		 * creation.
7908 		 */
7909 		if (verify_tags)
7910 		 	got_sigs_apply_unveil();
7911 		else {
7912 #ifndef PROFILE
7913 			if (pledge("stdio rpath wpath flock proc exec sendfd "
7914 			    "unveil", NULL) == -1)
7915 				err(1, "pledge");
7916 #endif
7917 		}
7918 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
7919 		if (error)
7920 			goto done;
7921 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
7922 		    revoked_signers, verbosity);
7923 	} else {
7924 		error = get_gitconfig_path(&gitconfig_path);
7925 		if (error)
7926 			goto done;
7927 		error = got_repo_open(&repo, repo_path, gitconfig_path,
7928 		    pack_fds);
7929 		if (error != NULL)
7930 			goto done;
7931 
7932 		error = get_author(&tagger, repo, worktree);
7933 		if (error)
7934 			goto done;
7935 		if (signer_id == NULL)
7936 			signer_id = get_signer_id(repo, worktree);
7937 
7938 		if (tagmsg == NULL) {
7939 			error = get_editor(&editor);
7940 			if (error)
7941 				goto done;
7942 			if (unveil(editor, "x") != 0) {
7943 				error = got_error_from_errno2("unveil", editor);
7944 				goto done;
7945 			}
7946 		}
7947 		if (signer_id) {
7948 			error = got_sigs_apply_unveil();
7949 			if (error)
7950 				goto done;
7951 		}
7952 		error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7953 		if (error)
7954 			goto done;
7955 
7956 		if (commit_id_arg == NULL) {
7957 			struct got_reference *head_ref;
7958 			struct got_object_id *commit_id;
7959 			error = got_ref_open(&head_ref, repo,
7960 			    worktree ? got_worktree_get_head_ref_name(worktree)
7961 			    : GOT_REF_HEAD, 0);
7962 			if (error)
7963 				goto done;
7964 			error = got_ref_resolve(&commit_id, repo, head_ref);
7965 			got_ref_close(head_ref);
7966 			if (error)
7967 				goto done;
7968 			error = got_object_id_str(&commit_id_str, commit_id);
7969 			free(commit_id);
7970 			if (error)
7971 				goto done;
7972 		} else {
7973 			error = got_keyword_to_idstr(&keyword_idstr,
7974 			    commit_id_arg, repo, worktree);
7975 			if (error != NULL)
7976 				goto done;
7977 			commit_id_str = keyword_idstr;
7978 		}
7979 
7980 		if (worktree) {
7981 			/* Release work tree lock. */
7982 			got_worktree_close(worktree);
7983 			worktree = NULL;
7984 		}
7985 
7986 		error = add_tag(repo, tagger, tag_name,
7987 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
7988 		    signer_id, editor, verbosity);
7989 	}
7990 done:
7991 	if (repo) {
7992 		const struct got_error *close_err = got_repo_close(repo);
7993 		if (error == NULL)
7994 			error = close_err;
7995 	}
7996 	if (worktree)
7997 		got_worktree_close(worktree);
7998 	if (pack_fds) {
7999 		const struct got_error *pack_err =
8000 		    got_repo_pack_fds_close(pack_fds);
8001 		if (error == NULL)
8002 			error = pack_err;
8003 	}
8004 	free(cwd);
8005 	free(editor);
8006 	free(repo_path);
8007 	free(gitconfig_path);
8008 	free(commit_id_str);
8009 	free(tagger);
8010 	free(allowed_signers);
8011 	free(revoked_signers);
8012 	return error;
8013 }
8014 
8015 __dead static void
8016 usage_add(void)
8017 {
8018 	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
8019 	exit(1);
8020 }
8021 
8022 static const struct got_error *
8023 add_progress(void *arg, unsigned char status, const char *path)
8024 {
8025 	while (path[0] == '/')
8026 		path++;
8027 	printf("%c  %s\n", status, path);
8028 	return NULL;
8029 }
8030 
8031 static const struct got_error *
8032 cmd_add(int argc, char *argv[])
8033 {
8034 	const struct got_error *error = NULL;
8035 	struct got_repository *repo = NULL;
8036 	struct got_worktree *worktree = NULL;
8037 	char *cwd = NULL;
8038 	struct got_pathlist_head paths;
8039 	struct got_pathlist_entry *pe;
8040 	int ch, can_recurse = 0, no_ignores = 0;
8041 	int *pack_fds = NULL;
8042 
8043 	TAILQ_INIT(&paths);
8044 
8045 #ifndef PROFILE
8046 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
8047 	    NULL) == -1)
8048 		err(1, "pledge");
8049 #endif
8050 
8051 	while ((ch = getopt(argc, argv, "IR")) != -1) {
8052 		switch (ch) {
8053 		case 'I':
8054 			no_ignores = 1;
8055 			break;
8056 		case 'R':
8057 			can_recurse = 1;
8058 			break;
8059 		default:
8060 			usage_add();
8061 			/* NOTREACHED */
8062 		}
8063 	}
8064 
8065 	argc -= optind;
8066 	argv += optind;
8067 
8068 	if (argc < 1)
8069 		usage_add();
8070 
8071 	cwd = getcwd(NULL, 0);
8072 	if (cwd == NULL) {
8073 		error = got_error_from_errno("getcwd");
8074 		goto done;
8075 	}
8076 
8077 	error = got_repo_pack_fds_open(&pack_fds);
8078 	if (error != NULL)
8079 		goto done;
8080 
8081 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
8082 	if (error) {
8083 		if (error->code == GOT_ERR_NOT_WORKTREE)
8084 			error = wrap_not_worktree_error(error, "add", cwd);
8085 		goto done;
8086 	}
8087 
8088 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8089 	    NULL, pack_fds);
8090 	if (error != NULL)
8091 		goto done;
8092 
8093 	error = apply_unveil(got_repo_get_path(repo), 1,
8094 	    got_worktree_get_root_path(worktree));
8095 	if (error)
8096 		goto done;
8097 
8098 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8099 	if (error)
8100 		goto done;
8101 
8102 	if (!can_recurse) {
8103 		char *ondisk_path;
8104 		struct stat sb;
8105 		TAILQ_FOREACH(pe, &paths, entry) {
8106 			if (asprintf(&ondisk_path, "%s/%s",
8107 			    got_worktree_get_root_path(worktree),
8108 			    pe->path) == -1) {
8109 				error = got_error_from_errno("asprintf");
8110 				goto done;
8111 			}
8112 			if (lstat(ondisk_path, &sb) == -1) {
8113 				if (errno == ENOENT) {
8114 					free(ondisk_path);
8115 					continue;
8116 				}
8117 				error = got_error_from_errno2("lstat",
8118 				    ondisk_path);
8119 				free(ondisk_path);
8120 				goto done;
8121 			}
8122 			free(ondisk_path);
8123 			if (S_ISDIR(sb.st_mode)) {
8124 				error = got_error_msg(GOT_ERR_BAD_PATH,
8125 				    "adding directories requires -R option");
8126 				goto done;
8127 			}
8128 		}
8129 	}
8130 
8131 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
8132 	    NULL, repo, no_ignores);
8133 done:
8134 	if (repo) {
8135 		const struct got_error *close_err = got_repo_close(repo);
8136 		if (error == NULL)
8137 			error = close_err;
8138 	}
8139 	if (worktree)
8140 		got_worktree_close(worktree);
8141 	if (pack_fds) {
8142 		const struct got_error *pack_err =
8143 		    got_repo_pack_fds_close(pack_fds);
8144 		if (error == NULL)
8145 			error = pack_err;
8146 	}
8147 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8148 	free(cwd);
8149 	return error;
8150 }
8151 
8152 __dead static void
8153 usage_remove(void)
8154 {
8155 	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
8156 	    getprogname());
8157 	exit(1);
8158 }
8159 
8160 static const struct got_error *
8161 print_remove_status(void *arg, unsigned char status,
8162     unsigned char staged_status, const char *path)
8163 {
8164 	while (path[0] == '/')
8165 		path++;
8166 	if (status == GOT_STATUS_NONEXISTENT)
8167 		return NULL;
8168 	if (status == staged_status && (status == GOT_STATUS_DELETE))
8169 		status = GOT_STATUS_NO_CHANGE;
8170 	printf("%c%c %s\n", status, staged_status, path);
8171 	return NULL;
8172 }
8173 
8174 static const struct got_error *
8175 cmd_remove(int argc, char *argv[])
8176 {
8177 	const struct got_error *error = NULL;
8178 	struct got_worktree *worktree = NULL;
8179 	struct got_repository *repo = NULL;
8180 	const char *status_codes = NULL;
8181 	char *cwd = NULL;
8182 	struct got_pathlist_head paths;
8183 	struct got_pathlist_entry *pe;
8184 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
8185 	int ignore_missing_paths = 0;
8186 	int *pack_fds = NULL;
8187 
8188 	TAILQ_INIT(&paths);
8189 
8190 #ifndef PROFILE
8191 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
8192 	    NULL) == -1)
8193 		err(1, "pledge");
8194 #endif
8195 
8196 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
8197 		switch (ch) {
8198 		case 'f':
8199 			delete_local_mods = 1;
8200 			ignore_missing_paths = 1;
8201 			break;
8202 		case 'k':
8203 			keep_on_disk = 1;
8204 			break;
8205 		case 'R':
8206 			can_recurse = 1;
8207 			break;
8208 		case 's':
8209 			for (i = 0; optarg[i] != '\0'; i++) {
8210 				switch (optarg[i]) {
8211 				case GOT_STATUS_MODIFY:
8212 					delete_local_mods = 1;
8213 					break;
8214 				case GOT_STATUS_MISSING:
8215 					ignore_missing_paths = 1;
8216 					break;
8217 				default:
8218 					errx(1, "invalid status code '%c'",
8219 					    optarg[i]);
8220 				}
8221 			}
8222 			status_codes = optarg;
8223 			break;
8224 		default:
8225 			usage_remove();
8226 			/* NOTREACHED */
8227 		}
8228 	}
8229 
8230 	argc -= optind;
8231 	argv += optind;
8232 
8233 	if (argc < 1)
8234 		usage_remove();
8235 
8236 	cwd = getcwd(NULL, 0);
8237 	if (cwd == NULL) {
8238 		error = got_error_from_errno("getcwd");
8239 		goto done;
8240 	}
8241 
8242 	error = got_repo_pack_fds_open(&pack_fds);
8243 	if (error != NULL)
8244 		goto done;
8245 
8246 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
8247 	if (error) {
8248 		if (error->code == GOT_ERR_NOT_WORKTREE)
8249 			error = wrap_not_worktree_error(error, "remove", cwd);
8250 		goto done;
8251 	}
8252 
8253 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8254 	    NULL, pack_fds);
8255 	if (error)
8256 		goto done;
8257 
8258 	error = apply_unveil(got_repo_get_path(repo), 1,
8259 	    got_worktree_get_root_path(worktree));
8260 	if (error)
8261 		goto done;
8262 
8263 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8264 	if (error)
8265 		goto done;
8266 
8267 	if (!can_recurse) {
8268 		char *ondisk_path;
8269 		struct stat sb;
8270 		TAILQ_FOREACH(pe, &paths, entry) {
8271 			if (asprintf(&ondisk_path, "%s/%s",
8272 			    got_worktree_get_root_path(worktree),
8273 			    pe->path) == -1) {
8274 				error = got_error_from_errno("asprintf");
8275 				goto done;
8276 			}
8277 			if (lstat(ondisk_path, &sb) == -1) {
8278 				if (errno == ENOENT) {
8279 					free(ondisk_path);
8280 					continue;
8281 				}
8282 				error = got_error_from_errno2("lstat",
8283 				    ondisk_path);
8284 				free(ondisk_path);
8285 				goto done;
8286 			}
8287 			free(ondisk_path);
8288 			if (S_ISDIR(sb.st_mode)) {
8289 				error = got_error_msg(GOT_ERR_BAD_PATH,
8290 				    "removing directories requires -R option");
8291 				goto done;
8292 			}
8293 		}
8294 	}
8295 
8296 	error = got_worktree_schedule_delete(worktree, &paths,
8297 	    delete_local_mods, status_codes, print_remove_status, NULL,
8298 	    repo, keep_on_disk, ignore_missing_paths);
8299 done:
8300 	if (repo) {
8301 		const struct got_error *close_err = got_repo_close(repo);
8302 		if (error == NULL)
8303 			error = close_err;
8304 	}
8305 	if (worktree)
8306 		got_worktree_close(worktree);
8307 	if (pack_fds) {
8308 		const struct got_error *pack_err =
8309 		    got_repo_pack_fds_close(pack_fds);
8310 		if (error == NULL)
8311 			error = pack_err;
8312 	}
8313 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8314 	free(cwd);
8315 	return error;
8316 }
8317 
8318 __dead static void
8319 usage_patch(void)
8320 {
8321 	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
8322 	    "[patchfile]\n", getprogname());
8323 	exit(1);
8324 }
8325 
8326 static const struct got_error *
8327 patch_from_stdin(int *patchfd)
8328 {
8329 	const struct got_error *err = NULL;
8330 	ssize_t r;
8331 	char buf[BUFSIZ];
8332 	sig_t sighup, sigint, sigquit;
8333 
8334 	*patchfd = got_opentempfd();
8335 	if (*patchfd == -1)
8336 		return got_error_from_errno("got_opentempfd");
8337 
8338 	sighup = signal(SIGHUP, SIG_DFL);
8339 	sigint = signal(SIGINT, SIG_DFL);
8340 	sigquit = signal(SIGQUIT, SIG_DFL);
8341 
8342 	for (;;) {
8343 		r = read(0, buf, sizeof(buf));
8344 		if (r == -1) {
8345 			err = got_error_from_errno("read");
8346 			break;
8347 		}
8348 		if (r == 0)
8349 			break;
8350 		if (write(*patchfd, buf, r) == -1) {
8351 			err = got_error_from_errno("write");
8352 			break;
8353 		}
8354 	}
8355 
8356 	signal(SIGHUP, sighup);
8357 	signal(SIGINT, sigint);
8358 	signal(SIGQUIT, sigquit);
8359 
8360 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
8361 		err = got_error_from_errno("lseek");
8362 
8363 	if (err != NULL) {
8364 		close(*patchfd);
8365 		*patchfd = -1;
8366 	}
8367 
8368 	return err;
8369 }
8370 
8371 struct got_patch_progress_arg {
8372 	int did_something;
8373 	int conflicts;
8374 	int rejects;
8375 };
8376 
8377 static const struct got_error *
8378 patch_progress(void *arg, const char *old, const char *new,
8379     unsigned char status, const struct got_error *error, int old_from,
8380     int old_lines, int new_from, int new_lines, int offset,
8381     int ws_mangled, const struct got_error *hunk_err)
8382 {
8383 	const char *path = new == NULL ? old : new;
8384 	struct got_patch_progress_arg *a = arg;
8385 
8386 	while (*path == '/')
8387 		path++;
8388 
8389 	if (status != GOT_STATUS_NO_CHANGE &&
8390 	    status != 0 /* per-hunk progress */) {
8391 		printf("%c  %s\n", status, path);
8392 		a->did_something = 1;
8393 	}
8394 
8395 	if (hunk_err == NULL) {
8396 		if (status == GOT_STATUS_CANNOT_UPDATE)
8397 			a->rejects++;
8398 		else if (status == GOT_STATUS_CONFLICT)
8399 			a->conflicts++;
8400 	}
8401 
8402 	if (error != NULL)
8403 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
8404 
8405 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
8406 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
8407 		    old_lines, new_from, new_lines);
8408 		if (hunk_err != NULL)
8409 			printf("%s\n", hunk_err->msg);
8410 		else if (offset != 0)
8411 			printf("applied with offset %d\n", offset);
8412 		else
8413 			printf("hunk contains mangled whitespace\n");
8414 	}
8415 
8416 	return NULL;
8417 }
8418 
8419 static void
8420 print_patch_progress_stats(struct got_patch_progress_arg *ppa)
8421 {
8422 	if (!ppa->did_something)
8423 		return;
8424 
8425 	if (ppa->conflicts > 0)
8426 		printf("Files with merge conflicts: %d\n", ppa->conflicts);
8427 
8428 	if (ppa->rejects > 0) {
8429 		printf("Files where patch failed to apply: %d\n",
8430 		    ppa->rejects);
8431 	}
8432 }
8433 
8434 static const struct got_error *
8435 cmd_patch(int argc, char *argv[])
8436 {
8437 	const struct got_error *error = NULL, *close_error = NULL;
8438 	struct got_worktree *worktree = NULL;
8439 	struct got_repository *repo = NULL;
8440 	struct got_reflist_head refs;
8441 	struct got_object_id *commit_id = NULL;
8442 	const char *commit_id_str = NULL;
8443 	struct stat sb;
8444 	const char *errstr;
8445 	char *cwd = NULL, *keyword_idstr = NULL;
8446 	int ch, nop = 0, strip = -1, reverse = 0;
8447 	int patchfd;
8448 	int *pack_fds = NULL;
8449 	struct got_patch_progress_arg ppa;
8450 
8451 	TAILQ_INIT(&refs);
8452 
8453 #ifndef PROFILE
8454 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
8455 	    "unveil", NULL) == -1)
8456 		err(1, "pledge");
8457 #endif
8458 
8459 	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
8460 		switch (ch) {
8461 		case 'c':
8462 			commit_id_str = optarg;
8463 			break;
8464 		case 'n':
8465 			nop = 1;
8466 			break;
8467 		case 'p':
8468 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
8469 			if (errstr != NULL)
8470 				errx(1, "pathname strip count is %s: %s",
8471 				     errstr, optarg);
8472 			break;
8473 		case 'R':
8474 			reverse = 1;
8475 			break;
8476 		default:
8477 			usage_patch();
8478 			/* NOTREACHED */
8479 		}
8480 	}
8481 
8482 	argc -= optind;
8483 	argv += optind;
8484 
8485 	if (argc == 0) {
8486 		error = patch_from_stdin(&patchfd);
8487 		if (error)
8488 			return error;
8489 	} else if (argc == 1) {
8490 		patchfd = open(argv[0], O_RDONLY);
8491 		if (patchfd == -1) {
8492 			error = got_error_from_errno2("open", argv[0]);
8493 			return error;
8494 		}
8495 		if (fstat(patchfd, &sb) == -1) {
8496 			error = got_error_from_errno2("fstat", argv[0]);
8497 			goto done;
8498 		}
8499 		if (!S_ISREG(sb.st_mode)) {
8500 			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
8501 			goto done;
8502 		}
8503 	} else
8504 		usage_patch();
8505 
8506 	if ((cwd = getcwd(NULL, 0)) == NULL) {
8507 		error = got_error_from_errno("getcwd");
8508 		goto done;
8509 	}
8510 
8511 	error = got_repo_pack_fds_open(&pack_fds);
8512 	if (error != NULL)
8513 		goto done;
8514 
8515 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
8516 	if (error != NULL)
8517 		goto done;
8518 
8519 	const char *repo_path = got_worktree_get_repo_path(worktree);
8520 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8521 	if (error != NULL)
8522 		goto done;
8523 
8524 	error = apply_unveil(got_repo_get_path(repo), 0,
8525 	    got_worktree_get_root_path(worktree));
8526 	if (error != NULL)
8527 		goto done;
8528 
8529 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8530 	if (error)
8531 		goto done;
8532 
8533 	if (commit_id_str != NULL) {
8534 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
8535 		    repo, worktree);
8536 		if (error != NULL)
8537 			goto done;
8538 
8539 		error = got_repo_match_object_id(&commit_id, NULL,
8540 		    keyword_idstr != NULL ? keyword_idstr : commit_id_str,
8541 		    GOT_OBJ_TYPE_COMMIT, &refs, repo);
8542 		if (error)
8543 			goto done;
8544 	}
8545 
8546 	memset(&ppa, 0, sizeof(ppa));
8547 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
8548 	    commit_id, patch_progress, &ppa, check_cancelled, NULL);
8549 	print_patch_progress_stats(&ppa);
8550 done:
8551 	got_ref_list_free(&refs);
8552 	free(keyword_idstr);
8553 	free(commit_id);
8554 	if (repo) {
8555 		close_error = got_repo_close(repo);
8556 		if (error == NULL)
8557 			error = close_error;
8558 	}
8559 	if (worktree != NULL) {
8560 		close_error = got_worktree_close(worktree);
8561 		if (error == NULL)
8562 			error = close_error;
8563 	}
8564 	if (pack_fds) {
8565 		const struct got_error *pack_err =
8566 		    got_repo_pack_fds_close(pack_fds);
8567 		if (error == NULL)
8568 			error = pack_err;
8569 	}
8570 	free(cwd);
8571 	return error;
8572 }
8573 
8574 __dead static void
8575 usage_revert(void)
8576 {
8577 	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
8578 	    getprogname());
8579 	exit(1);
8580 }
8581 
8582 static const struct got_error *
8583 revert_progress(void *arg, unsigned char status, const char *path)
8584 {
8585 	if (status == GOT_STATUS_UNVERSIONED)
8586 		return NULL;
8587 
8588 	while (path[0] == '/')
8589 		path++;
8590 	printf("%c  %s\n", status, path);
8591 	return NULL;
8592 }
8593 
8594 struct choose_patch_arg {
8595 	FILE *patch_script_file;
8596 	const char *action;
8597 };
8598 
8599 static const struct got_error *
8600 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
8601     int nchanges, const char *action)
8602 {
8603 	const struct got_error *err;
8604 	char *line = NULL;
8605 	size_t linesize = 0;
8606 	ssize_t linelen;
8607 
8608 	switch (status) {
8609 	case GOT_STATUS_ADD:
8610 		printf("A  %s\n%s this addition? [y/n] ", path, action);
8611 		break;
8612 	case GOT_STATUS_DELETE:
8613 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
8614 		break;
8615 	case GOT_STATUS_MODIFY:
8616 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
8617 			return got_error_from_errno("fseek");
8618 		printf(GOT_COMMIT_SEP_STR);
8619 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
8620 			printf("%s", line);
8621 		if (linelen == -1 && ferror(patch_file)) {
8622 			err = got_error_from_errno("getline");
8623 			free(line);
8624 			return err;
8625 		}
8626 		free(line);
8627 		printf(GOT_COMMIT_SEP_STR);
8628 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
8629 		    path, n, nchanges, action);
8630 		break;
8631 	default:
8632 		return got_error_path(path, GOT_ERR_FILE_STATUS);
8633 	}
8634 
8635 	fflush(stdout);
8636 	return NULL;
8637 }
8638 
8639 #define CHOOSE_PATCH_VALID_RESPONSES	"ynq"
8640 
8641 static const struct got_error *
8642 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
8643     FILE *patch_file, int n, int nchanges)
8644 {
8645 	const struct got_error *err = NULL;
8646 	char *nl, *line = NULL;
8647 	FILE *fp = stdin;
8648 	size_t linesize = 0;
8649 	ssize_t linelen;
8650 	int interactive = 1;
8651 	struct choose_patch_arg *a = arg;
8652 
8653 	*choice = GOT_PATCH_CHOICE_NONE;
8654 
8655 	if (a->patch_script_file) {
8656 		interactive = 0;
8657 		fp = a->patch_script_file;
8658 	}
8659 
8660 	for (;;) {
8661 		err = show_change(status, path, patch_file, n, nchanges,
8662 		    a->action);
8663 		if (err)
8664 			return err;
8665 
8666 		linelen = getline(&line, &linesize, fp);
8667 		if (linelen == -1) {
8668 			free(line);
8669 			if (ferror(fp))
8670 				return got_error_from_errno("getline");
8671 			if (feof(fp))
8672 				return got_error(GOT_ERR_EOF);
8673 			return NULL;
8674 		}
8675 
8676 		nl = strchr(line, '\n');
8677 		if (nl)
8678 			*nl = '\0';
8679 		if (strlen(line) != 1 ||
8680 		    !strchr(CHOOSE_PATCH_VALID_RESPONSES, line[0])) {
8681 			printf("invalid response '%s'\n", line);
8682 			if (interactive)
8683 				continue;
8684 		}
8685 
8686 		/* ADD and DELETE do not accept 'q' response currently. */
8687 		if (status != GOT_STATUS_MODIFY && line[0] == 'q') {
8688 			printf("invalid response '%s'\n", line);
8689 			continue;
8690 		}
8691 
8692 		break;
8693 	}
8694 
8695 	switch (line[0]) {
8696 	case 'y':
8697 		*choice = GOT_PATCH_CHOICE_YES;
8698 		break;
8699 	case 'n':
8700 		*choice = GOT_PATCH_CHOICE_NO;
8701 		break;
8702 	case 'q':
8703 		if (status == GOT_STATUS_MODIFY)
8704 			*choice = GOT_PATCH_CHOICE_QUIT;
8705 		break;
8706 	default:
8707 		printf("invalid response '%s'\n", line);
8708 		free(line);
8709 		return NULL;
8710 	}
8711 
8712 	if (!interactive)
8713 		printf("%c\n", line[0]);
8714 
8715 	free(line);
8716 	return NULL;
8717 }
8718 
8719 struct wt_commitable_path_arg {
8720 	struct got_pathlist_head	*commit_paths;
8721 	int				*has_changes;
8722 };
8723 
8724 /*
8725  * Shortcut work tree status callback to determine if the set of paths scanned
8726  * has at least one versioned path that is being modified and, if not NULL, is
8727  * in the arg->commit_paths list.  Set arg and return GOT_ERR_FILE_MODIFIED as
8728  * soon as a path is passed with a status that satisfies this criteria.
8729  */
8730 static const struct got_error *
8731 worktree_has_commitable_path(void *arg, unsigned char status,
8732     unsigned char staged_status, const char *path,
8733     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
8734     struct got_object_id *commit_id, int dirfd, const char *de_name)
8735 {
8736 	struct wt_commitable_path_arg *a = arg;
8737 
8738 	if (status == staged_status && (status == GOT_STATUS_DELETE))
8739 		status = GOT_STATUS_NO_CHANGE;
8740 
8741 	if (!(status == GOT_STATUS_NO_CHANGE ||
8742 	    status == GOT_STATUS_UNVERSIONED) ||
8743 	    staged_status != GOT_STATUS_NO_CHANGE) {
8744 		if (a->commit_paths != NULL) {
8745 			struct got_pathlist_entry *pe;
8746 
8747 			TAILQ_FOREACH(pe, a->commit_paths, entry) {
8748 				if (strncmp(path, pe->path,
8749 				    pe->path_len) == 0) {
8750 					*a->has_changes = 1;
8751 					break;
8752 				}
8753 			}
8754 		} else
8755 			*a->has_changes = 1;
8756 
8757 		if (*a->has_changes)
8758 			return got_error(GOT_ERR_FILE_MODIFIED);
8759 	}
8760 
8761 	return NULL;
8762 }
8763 
8764 /*
8765  * Check that the changeset of the commit identified by id is
8766  * comprised of at least one modified path that is being committed.
8767  */
8768 static const struct got_error *
8769 commit_path_changed_in_worktree(struct wt_commitable_path_arg *wcpa,
8770     struct got_object_id *id, struct got_worktree *worktree,
8771     struct got_repository *repo)
8772 {
8773 	const struct got_error		*err;
8774 	struct got_pathlist_head	 paths;
8775 	struct got_commit_object	*commit = NULL, *pcommit = NULL;
8776 	struct got_tree_object		*tree = NULL, *ptree = NULL;
8777 	struct got_object_qid		*pid;
8778 
8779 	TAILQ_INIT(&paths);
8780 
8781 	err = got_object_open_as_commit(&commit, repo, id);
8782 	if (err)
8783 		goto done;
8784 
8785 	err = got_object_open_as_tree(&tree, repo,
8786 	    got_object_commit_get_tree_id(commit));
8787 	if (err)
8788 		goto done;
8789 
8790 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8791 	if (pid != NULL) {
8792 		err = got_object_open_as_commit(&pcommit, repo, &pid->id);
8793 		if (err)
8794 			goto done;
8795 
8796 		err = got_object_open_as_tree(&ptree, repo,
8797 		    got_object_commit_get_tree_id(pcommit));
8798 		if (err)
8799 			goto done;
8800 	}
8801 
8802 	err = got_diff_tree(ptree, tree, NULL, NULL, -1, -1, "", "", repo,
8803 	    got_diff_tree_collect_changed_paths, &paths, 0);
8804 	if (err)
8805 		goto done;
8806 
8807 	err = got_worktree_status(worktree, &paths, repo, 0,
8808 	    worktree_has_commitable_path, wcpa, check_cancelled, NULL);
8809 	if (err && err->code == GOT_ERR_FILE_MODIFIED) {
8810 		/*
8811 		 * At least one changed path in the referenced commit is
8812 		 * modified in the work tree, that's all we need to know!
8813 		 */
8814 		err = NULL;
8815 	}
8816 
8817 done:
8818 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
8819 	if (commit)
8820 		got_object_commit_close(commit);
8821 	if (pcommit)
8822 		got_object_commit_close(pcommit);
8823 	if (tree)
8824 		got_object_tree_close(tree);
8825 	if (ptree)
8826 		got_object_tree_close(ptree);
8827 	return err;
8828 }
8829 
8830 /*
8831  * Remove any "logmsg" reference comprised entirely of paths that have
8832  * been reverted in this work tree. If any path in the logmsg ref changeset
8833  * remains in a changed state in the worktree, do not remove the reference.
8834  */
8835 static const struct got_error *
8836 rm_logmsg_ref(struct got_worktree *worktree, struct got_repository *repo)
8837 {
8838 	const struct got_error		*err;
8839 	struct got_reflist_head		 refs;
8840 	struct got_reflist_entry	*re;
8841 	struct got_commit_object	*commit = NULL;
8842 	struct got_object_id		*commit_id = NULL;
8843 	struct wt_commitable_path_arg	 wcpa;
8844 	char				*uuidstr = NULL;
8845 
8846 	TAILQ_INIT(&refs);
8847 
8848 	err = got_worktree_get_uuid(&uuidstr, worktree);
8849 	if (err)
8850 		goto done;
8851 
8852 	err = got_ref_list(&refs, repo, "refs/got/worktree",
8853 	    got_ref_cmp_by_name, repo);
8854 	if (err)
8855 		goto done;
8856 
8857 	TAILQ_FOREACH(re, &refs, entry) {
8858 		const char	*refname;
8859 		int		 has_changes = 0;
8860 
8861 		refname = got_ref_get_name(re->ref);
8862 
8863 		if (!strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8864 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN))
8865 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
8866 		else if (!strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
8867 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN))
8868 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
8869 		else
8870 			continue;
8871 
8872 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
8873 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
8874 		else
8875 			continue;
8876 
8877 		err = got_repo_match_object_id(&commit_id, NULL, refname,
8878 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8879 		if (err)
8880 			goto done;
8881 
8882 		err = got_object_open_as_commit(&commit, repo, commit_id);
8883 		if (err)
8884 			goto done;
8885 
8886 		wcpa.commit_paths = NULL;
8887 		wcpa.has_changes = &has_changes;
8888 
8889 		err = commit_path_changed_in_worktree(&wcpa, commit_id,
8890 		    worktree, repo);
8891 		if (err)
8892 			goto done;
8893 
8894 		if (!has_changes) {
8895 			err = got_ref_delete(re->ref, repo);
8896 			if (err)
8897 				goto done;
8898 		}
8899 
8900 		got_object_commit_close(commit);
8901 		commit = NULL;
8902 		free(commit_id);
8903 		commit_id = NULL;
8904 	}
8905 
8906 done:
8907 	free(uuidstr);
8908 	free(commit_id);
8909 	got_ref_list_free(&refs);
8910 	if (commit)
8911 		got_object_commit_close(commit);
8912 	return err;
8913 }
8914 
8915 static const struct got_error *
8916 cmd_revert(int argc, char *argv[])
8917 {
8918 	const struct got_error *error = NULL;
8919 	struct got_worktree *worktree = NULL;
8920 	struct got_repository *repo = NULL;
8921 	char *cwd = NULL, *path = NULL;
8922 	struct got_pathlist_head paths;
8923 	struct got_pathlist_entry *pe;
8924 	int ch, can_recurse = 0, pflag = 0;
8925 	FILE *patch_script_file = NULL;
8926 	const char *patch_script_path = NULL;
8927 	struct choose_patch_arg cpa;
8928 	int *pack_fds = NULL;
8929 
8930 	TAILQ_INIT(&paths);
8931 
8932 #ifndef PROFILE
8933 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8934 	    "unveil", NULL) == -1)
8935 		err(1, "pledge");
8936 #endif
8937 
8938 	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
8939 		switch (ch) {
8940 		case 'F':
8941 			patch_script_path = optarg;
8942 			break;
8943 		case 'p':
8944 			pflag = 1;
8945 			break;
8946 		case 'R':
8947 			can_recurse = 1;
8948 			break;
8949 		default:
8950 			usage_revert();
8951 			/* NOTREACHED */
8952 		}
8953 	}
8954 
8955 	argc -= optind;
8956 	argv += optind;
8957 
8958 	if (argc < 1)
8959 		usage_revert();
8960 	if (patch_script_path && !pflag)
8961 		errx(1, "-F option can only be used together with -p option");
8962 
8963 	cwd = getcwd(NULL, 0);
8964 	if (cwd == NULL) {
8965 		error = got_error_from_errno("getcwd");
8966 		goto done;
8967 	}
8968 
8969 	error = got_repo_pack_fds_open(&pack_fds);
8970 	if (error != NULL)
8971 		goto done;
8972 
8973 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
8974 	if (error) {
8975 		if (error->code == GOT_ERR_NOT_WORKTREE)
8976 			error = wrap_not_worktree_error(error, "revert", cwd);
8977 		goto done;
8978 	}
8979 
8980 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8981 	    NULL, pack_fds);
8982 	if (error != NULL)
8983 		goto done;
8984 
8985 	if (patch_script_path) {
8986 		patch_script_file = fopen(patch_script_path, "re");
8987 		if (patch_script_file == NULL) {
8988 			error = got_error_from_errno2("fopen",
8989 			    patch_script_path);
8990 			goto done;
8991 		}
8992 	}
8993 
8994 	/*
8995 	 * XXX "c" perm needed on repo dir to delete merge references.
8996 	 */
8997 	error = apply_unveil(got_repo_get_path(repo), 0,
8998 	    got_worktree_get_root_path(worktree));
8999 	if (error)
9000 		goto done;
9001 
9002 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
9003 	if (error)
9004 		goto done;
9005 
9006 	if (!can_recurse) {
9007 		char *ondisk_path;
9008 		struct stat sb;
9009 		TAILQ_FOREACH(pe, &paths, entry) {
9010 			if (asprintf(&ondisk_path, "%s/%s",
9011 			    got_worktree_get_root_path(worktree),
9012 			    pe->path) == -1) {
9013 				error = got_error_from_errno("asprintf");
9014 				goto done;
9015 			}
9016 			if (lstat(ondisk_path, &sb) == -1) {
9017 				if (errno == ENOENT) {
9018 					free(ondisk_path);
9019 					continue;
9020 				}
9021 				error = got_error_from_errno2("lstat",
9022 				    ondisk_path);
9023 				free(ondisk_path);
9024 				goto done;
9025 			}
9026 			free(ondisk_path);
9027 			if (S_ISDIR(sb.st_mode)) {
9028 				error = got_error_msg(GOT_ERR_BAD_PATH,
9029 				    "reverting directories requires -R option");
9030 				goto done;
9031 			}
9032 		}
9033 	}
9034 
9035 	cpa.patch_script_file = patch_script_file;
9036 	cpa.action = "revert";
9037 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
9038 	    pflag ? choose_patch : NULL, &cpa, repo);
9039 
9040 	error = rm_logmsg_ref(worktree, repo);
9041 done:
9042 	if (patch_script_file && fclose(patch_script_file) == EOF &&
9043 	    error == NULL)
9044 		error = got_error_from_errno2("fclose", patch_script_path);
9045 	if (repo) {
9046 		const struct got_error *close_err = got_repo_close(repo);
9047 		if (error == NULL)
9048 			error = close_err;
9049 	}
9050 	if (worktree)
9051 		got_worktree_close(worktree);
9052 	if (pack_fds) {
9053 		const struct got_error *pack_err =
9054 		    got_repo_pack_fds_close(pack_fds);
9055 		if (error == NULL)
9056 			error = pack_err;
9057 	}
9058 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
9059 	free(path);
9060 	free(cwd);
9061 	return error;
9062 }
9063 
9064 __dead static void
9065 usage_commit(void)
9066 {
9067 	fprintf(stderr, "usage: %s commit [-CNnS] [-A author] [-F path] "
9068 	    "[-m message] [path ...]\n", getprogname());
9069 	exit(1);
9070 }
9071 
9072 struct collect_commit_logmsg_arg {
9073 	const char *cmdline_log;
9074 	const char *prepared_log;
9075 	const char *merged_log;
9076 	int non_interactive;
9077 	const char *editor;
9078 	const char *worktree_path;
9079 	const char *branch_name;
9080 	const char *repo_path;
9081 	char *logmsg_path;
9082 
9083 };
9084 
9085 static const struct got_error *
9086 read_prepared_logmsg(char **logmsg, const char *path)
9087 {
9088 	const struct got_error *err = NULL;
9089 	FILE *f = NULL;
9090 	struct stat sb;
9091 	size_t r;
9092 
9093 	*logmsg = NULL;
9094 	memset(&sb, 0, sizeof(sb));
9095 
9096 	f = fopen(path, "re");
9097 	if (f == NULL)
9098 		return got_error_from_errno2("fopen", path);
9099 
9100 	if (fstat(fileno(f), &sb) == -1) {
9101 		err = got_error_from_errno2("fstat", path);
9102 		goto done;
9103 	}
9104 	if (sb.st_size == 0) {
9105 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
9106 		goto done;
9107 	}
9108 
9109 	*logmsg = malloc(sb.st_size + 1);
9110 	if (*logmsg == NULL) {
9111 		err = got_error_from_errno("malloc");
9112 		goto done;
9113 	}
9114 
9115 	r = fread(*logmsg, 1, sb.st_size, f);
9116 	if (r != sb.st_size) {
9117 		if (ferror(f))
9118 			err = got_error_from_errno2("fread", path);
9119 		else
9120 			err = got_error(GOT_ERR_IO);
9121 		goto done;
9122 	}
9123 	(*logmsg)[sb.st_size] = '\0';
9124 done:
9125 	if (fclose(f) == EOF && err == NULL)
9126 		err = got_error_from_errno2("fclose", path);
9127 	if (err) {
9128 		free(*logmsg);
9129 		*logmsg = NULL;
9130 	}
9131 	return err;
9132 }
9133 
9134 static const struct got_error *
9135 collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
9136     const char *diff_path, char **logmsg, void *arg)
9137 {
9138 	char *initial_content = NULL;
9139 	struct got_pathlist_entry *pe;
9140 	const struct got_error *err = NULL;
9141 	char *template = NULL;
9142 	char *prepared_msg = NULL, *merged_msg = NULL;
9143 	struct collect_commit_logmsg_arg *a = arg;
9144 	int initial_content_len;
9145 	int fd = -1;
9146 	size_t len;
9147 
9148 	/* if a message was specified on the command line, just use it */
9149 	if (a->cmdline_log != NULL && *a->cmdline_log != '\0') {
9150 		len = strlen(a->cmdline_log) + 1;
9151 		*logmsg = malloc(len + 1);
9152 		if (*logmsg == NULL)
9153 			return got_error_from_errno("malloc");
9154 		strlcpy(*logmsg, a->cmdline_log, len);
9155 		return NULL;
9156 	} else if (a->prepared_log != NULL && a->non_interactive)
9157 		return read_prepared_logmsg(logmsg, a->prepared_log);
9158 
9159 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
9160 		return got_error_from_errno("asprintf");
9161 
9162 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
9163 	if (err)
9164 		goto done;
9165 
9166 	if (a->prepared_log) {
9167 		err = read_prepared_logmsg(&prepared_msg, a->prepared_log);
9168 		if (err)
9169 			goto done;
9170 	} else if (a->merged_log) {
9171 		err = read_prepared_logmsg(&merged_msg, a->merged_log);
9172 		if (err)
9173 			goto done;
9174 	}
9175 
9176 	initial_content_len = asprintf(&initial_content,
9177 	    "%s%s\n# changes to be committed on branch %s:\n",
9178 	    prepared_msg ? prepared_msg : "",
9179 	    merged_msg ? merged_msg : "", a->branch_name);
9180 	if (initial_content_len == -1) {
9181 		err = got_error_from_errno("asprintf");
9182 		goto done;
9183 	}
9184 
9185 	if (write(fd, initial_content, initial_content_len) == -1) {
9186 		err = got_error_from_errno2("write", a->logmsg_path);
9187 		goto done;
9188 	}
9189 
9190 	TAILQ_FOREACH(pe, commitable_paths, entry) {
9191 		struct got_commitable *ct = pe->data;
9192 		dprintf(fd, "#  %c  %s\n",
9193 		    got_commitable_get_status(ct),
9194 		    got_commitable_get_path(ct));
9195 	}
9196 
9197 	if (diff_path) {
9198 		dprintf(fd, "# detailed changes can be viewed in %s\n",
9199 		    diff_path);
9200 	}
9201 
9202 	if (close(fd) == -1) {
9203 		err = got_error_from_errno2("close", a->logmsg_path);
9204 		goto done;
9205 	}
9206 	fd = -1;
9207 
9208 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
9209 	    initial_content_len, a->prepared_log ? 0 : 1);
9210 done:
9211 	free(initial_content);
9212 	free(template);
9213 	free(prepared_msg);
9214 	free(merged_msg);
9215 
9216 	if (fd != -1 && close(fd) == -1 && err == NULL)
9217 		err = got_error_from_errno2("close", a->logmsg_path);
9218 	if (err) {
9219 		free(*logmsg);
9220 		*logmsg = NULL;
9221 	}
9222 	return err;
9223 }
9224 
9225 static const struct got_error *
9226 cat_logmsg(FILE *f, struct got_commit_object *commit, const char *idstr,
9227     const char *type, int has_content)
9228 {
9229 	const struct got_error	*err = NULL;
9230 	char			*logmsg = NULL;
9231 
9232 	err = got_object_commit_get_logmsg(&logmsg, commit);
9233 	if (err)
9234 		return err;
9235 
9236 	if (fprintf(f, "%s# log message of %s commit %s:%s",
9237 	    has_content ? "\n" : "", type, idstr, logmsg) < 0)
9238 		err = got_ferror(f, GOT_ERR_IO);
9239 
9240 	free(logmsg);
9241 	return err;
9242 }
9243 
9244 /*
9245  * Lookup "logmsg" references of backed-out and cherrypicked commits
9246  * belonging to the current work tree. If found, and the worktree has
9247  * at least one modified file that was changed in the referenced commit,
9248  * add its log message to a new temporary file at *logmsg_path.
9249  * Add all refs found to matched_refs to be scheduled for removal on
9250  * successful commit.
9251  */
9252 static const struct got_error *
9253 lookup_logmsg_ref(char **logmsg_path, struct got_pathlist_head *paths,
9254     struct got_reflist_head *matched_refs, struct got_worktree *worktree,
9255     struct got_repository *repo)
9256 {
9257 	const struct got_error		*err;
9258 	struct got_commit_object	*commit = NULL;
9259 	struct got_object_id		*id = NULL;
9260 	struct got_reflist_head		 refs;
9261 	struct got_reflist_entry	*re, *re_match;
9262 	FILE				*f = NULL;
9263 	char				*uuidstr = NULL;
9264 	int				 added_logmsg = 0;
9265 
9266 	TAILQ_INIT(&refs);
9267 
9268 	*logmsg_path = NULL;
9269 
9270 	err = got_worktree_get_uuid(&uuidstr, worktree);
9271 	if (err)
9272 		goto done;
9273 
9274 	err = got_ref_list(&refs, repo, "refs/got/worktree",
9275 	    got_ref_cmp_by_name, repo);
9276 	if (err)
9277 		goto done;
9278 
9279 	TAILQ_FOREACH(re, &refs, entry) {
9280 		const char			*refname, *type;
9281 		struct wt_commitable_path_arg	 wcpa;
9282 		int				 add_logmsg = 0;
9283 
9284 		refname = got_ref_get_name(re->ref);
9285 
9286 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
9287 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
9288 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
9289 			type = "cherrypicked";
9290 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
9291 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
9292 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
9293 			type = "backed-out";
9294 		} else
9295 			continue;
9296 
9297 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
9298 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
9299 		else
9300 			continue;
9301 
9302 		err = got_repo_match_object_id(&id, NULL, refname,
9303 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9304 		if (err)
9305 			goto done;
9306 
9307 		err = got_object_open_as_commit(&commit, repo, id);
9308 		if (err)
9309 			goto done;
9310 
9311 		wcpa.commit_paths = paths;
9312 		wcpa.has_changes = &add_logmsg;
9313 
9314 		err = commit_path_changed_in_worktree(&wcpa, id,
9315 		    worktree, repo);
9316 		if (err)
9317 			goto done;
9318 
9319 		if (add_logmsg) {
9320 			if (f == NULL) {
9321 				err = got_opentemp_named(logmsg_path, &f,
9322 				    "got-commit-logmsg", "");
9323 				if (err)
9324 					goto done;
9325 			}
9326 			err = cat_logmsg(f, commit, refname, type,
9327 			    added_logmsg);
9328 			if (err)
9329 				goto done;
9330 			if (!added_logmsg)
9331 				++added_logmsg;
9332 
9333 			err = got_reflist_entry_dup(&re_match, re);
9334 			if (err)
9335 				goto done;
9336 			TAILQ_INSERT_HEAD(matched_refs, re_match, entry);
9337 		}
9338 
9339 		got_object_commit_close(commit);
9340 		commit = NULL;
9341 		free(id);
9342 		id = NULL;
9343 	}
9344 
9345 done:
9346 	free(id);
9347 	free(uuidstr);
9348 	got_ref_list_free(&refs);
9349 	if (commit)
9350 		got_object_commit_close(commit);
9351 	if (f && fclose(f) == EOF && err == NULL)
9352 		err = got_error_from_errno("fclose");
9353 	if (!added_logmsg) {
9354 		if (*logmsg_path && unlink(*logmsg_path) != 0 && err == NULL)
9355 			err = got_error_from_errno2("unlink", *logmsg_path);
9356 		*logmsg_path = NULL;
9357 	}
9358 	return err;
9359 }
9360 
9361 static const struct got_error *
9362 cmd_commit(int argc, char *argv[])
9363 {
9364 	const struct got_error *error = NULL;
9365 	struct got_worktree *worktree = NULL;
9366 	struct got_repository *repo = NULL;
9367 	char *cwd = NULL, *id_str = NULL;
9368 	struct got_object_id *id = NULL;
9369 	const char *logmsg = NULL;
9370 	char *prepared_logmsg = NULL, *merged_logmsg = NULL;
9371 	struct collect_commit_logmsg_arg cl_arg;
9372 	const char *author = NULL;
9373 	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
9374 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
9375 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
9376 	int show_diff = 1, commit_conflicts = 0;
9377 	struct got_pathlist_head paths;
9378 	struct got_reflist_head refs;
9379 	struct got_reflist_entry *re;
9380 	int *pack_fds = NULL;
9381 
9382 	TAILQ_INIT(&refs);
9383 	TAILQ_INIT(&paths);
9384 	cl_arg.logmsg_path = NULL;
9385 
9386 #ifndef PROFILE
9387 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9388 	    "unveil", NULL) == -1)
9389 		err(1, "pledge");
9390 #endif
9391 
9392 	while ((ch = getopt(argc, argv, "A:CF:m:NnS")) != -1) {
9393 		switch (ch) {
9394 		case 'A':
9395 			author = optarg;
9396 			error = valid_author(author);
9397 			if (error)
9398 				return error;
9399 			break;
9400 		case 'C':
9401 			commit_conflicts = 1;
9402 			break;
9403 		case 'F':
9404 			if (logmsg != NULL)
9405 				option_conflict('F', 'm');
9406 			prepared_logmsg = realpath(optarg, NULL);
9407 			if (prepared_logmsg == NULL)
9408 				return got_error_from_errno2("realpath",
9409 				    optarg);
9410 			break;
9411 		case 'm':
9412 			if (prepared_logmsg)
9413 				option_conflict('m', 'F');
9414 			logmsg = optarg;
9415 			break;
9416 		case 'N':
9417 			non_interactive = 1;
9418 			break;
9419 		case 'n':
9420 			show_diff = 0;
9421 			break;
9422 		case 'S':
9423 			allow_bad_symlinks = 1;
9424 			break;
9425 		default:
9426 			usage_commit();
9427 			/* NOTREACHED */
9428 		}
9429 	}
9430 
9431 	argc -= optind;
9432 	argv += optind;
9433 
9434 	cwd = getcwd(NULL, 0);
9435 	if (cwd == NULL) {
9436 		error = got_error_from_errno("getcwd");
9437 		goto done;
9438 	}
9439 
9440 	error = got_repo_pack_fds_open(&pack_fds);
9441 	if (error != NULL)
9442 		goto done;
9443 
9444 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
9445 	if (error) {
9446 		if (error->code == GOT_ERR_NOT_WORKTREE)
9447 			error = wrap_not_worktree_error(error, "commit", cwd);
9448 		goto done;
9449 	}
9450 
9451 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
9452 	if (error)
9453 		goto done;
9454 	if (rebase_in_progress) {
9455 		error = got_error(GOT_ERR_REBASING);
9456 		goto done;
9457 	}
9458 
9459 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
9460 	    worktree);
9461 	if (error)
9462 		goto done;
9463 
9464 	error = get_gitconfig_path(&gitconfig_path);
9465 	if (error)
9466 		goto done;
9467 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9468 	    gitconfig_path, pack_fds);
9469 	if (error != NULL)
9470 		goto done;
9471 
9472 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
9473 	if (error)
9474 		goto done;
9475 	if (merge_in_progress) {
9476 		error = got_error(GOT_ERR_MERGE_BUSY);
9477 		goto done;
9478 	}
9479 
9480 	error = get_author(&committer, repo, worktree);
9481 	if (error)
9482 		goto done;
9483 
9484 	if (author == NULL)
9485 		author = committer;
9486 
9487 	if (logmsg == NULL || strlen(logmsg) == 0) {
9488 		error = get_editor(&editor);
9489 		if (error)
9490 			goto done;
9491 		if (unveil(editor, "x") != 0) {
9492 			error = got_error_from_errno2("unveil", editor);
9493 			goto done;
9494 		}
9495 	}
9496 	if (prepared_logmsg) {
9497 		if (unveil(prepared_logmsg, "r") != 0) {
9498 			error = got_error_from_errno2("unveil",
9499 			    prepared_logmsg);
9500 			goto done;
9501 		}
9502 	}
9503 
9504 	error = apply_unveil(got_repo_get_path(repo), 0,
9505 	    got_worktree_get_root_path(worktree));
9506 	if (error)
9507 		goto done;
9508 
9509 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
9510 	if (error)
9511 		goto done;
9512 
9513 	if (prepared_logmsg == NULL) {
9514 		error = lookup_logmsg_ref(&merged_logmsg,
9515 		    argc > 0 ? &paths : NULL, &refs, worktree, repo);
9516 		if (error)
9517 			goto done;
9518 	}
9519 
9520 	cl_arg.editor = editor;
9521 	cl_arg.cmdline_log = logmsg;
9522 	cl_arg.prepared_log = prepared_logmsg;
9523 	cl_arg.merged_log = merged_logmsg;
9524 	cl_arg.non_interactive = non_interactive;
9525 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
9526 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
9527 	if (!histedit_in_progress) {
9528 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
9529 			error = got_error(GOT_ERR_COMMIT_BRANCH);
9530 			goto done;
9531 		}
9532 		cl_arg.branch_name += 11;
9533 	}
9534 	cl_arg.repo_path = got_repo_get_path(repo);
9535 	error = got_worktree_commit(&id, worktree, &paths, author, committer,
9536 	    allow_bad_symlinks, show_diff, commit_conflicts,
9537 	    collect_commit_logmsg, &cl_arg, print_status, NULL, repo);
9538 	if (error) {
9539 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
9540 		    cl_arg.logmsg_path != NULL)
9541 			preserve_logmsg = 1;
9542 		goto done;
9543 	}
9544 
9545 	error = got_object_id_str(&id_str, id);
9546 	if (error)
9547 		goto done;
9548 	printf("Created commit %s\n", id_str);
9549 
9550 	TAILQ_FOREACH(re, &refs, entry) {
9551 		error = got_ref_delete(re->ref, repo);
9552 		if (error)
9553 			goto done;
9554 	}
9555 
9556 done:
9557 	if (preserve_logmsg) {
9558 		fprintf(stderr, "%s: log message preserved in %s\n",
9559 		    getprogname(), cl_arg.logmsg_path);
9560 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
9561 	    error == NULL)
9562 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
9563 	free(cl_arg.logmsg_path);
9564 	if (merged_logmsg && unlink(merged_logmsg) == -1 && error == NULL)
9565 		error = got_error_from_errno2("unlink", merged_logmsg);
9566 	free(merged_logmsg);
9567 	if (repo) {
9568 		const struct got_error *close_err = got_repo_close(repo);
9569 		if (error == NULL)
9570 			error = close_err;
9571 	}
9572 	if (worktree)
9573 		got_worktree_close(worktree);
9574 	if (pack_fds) {
9575 		const struct got_error *pack_err =
9576 		    got_repo_pack_fds_close(pack_fds);
9577 		if (error == NULL)
9578 			error = pack_err;
9579 	}
9580 	got_ref_list_free(&refs);
9581 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
9582 	free(cwd);
9583 	free(id_str);
9584 	free(gitconfig_path);
9585 	free(editor);
9586 	free(committer);
9587 	free(prepared_logmsg);
9588 	return error;
9589 }
9590 
9591 __dead static void
9592 usage_send(void)
9593 {
9594 	fprintf(stderr, "usage: %s send [-afqTv] [-b branch] [-d branch] "
9595 	    "[-r repository-path] [-t tag] [remote-repository]\n",
9596 	    getprogname());
9597 	exit(1);
9598 }
9599 
9600 static void
9601 print_load_info(int print_colored, int print_found, int print_trees,
9602     int ncolored, int nfound, int ntrees)
9603 {
9604 	if (print_colored) {
9605 		printf("%d commit%s colored", ncolored,
9606 		    ncolored == 1 ? "" : "s");
9607 	}
9608 	if (print_found) {
9609 		printf("%s%d object%s found",
9610 		    ncolored > 0 ? "; " : "",
9611 		    nfound, nfound == 1 ? "" : "s");
9612 	}
9613 	if (print_trees) {
9614 		printf("; %d tree%s scanned", ntrees,
9615 		    ntrees == 1 ? "" : "s");
9616 	}
9617 }
9618 
9619 struct got_send_progress_arg {
9620 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
9621 	int verbosity;
9622 	int last_ncolored;
9623 	int last_nfound;
9624 	int last_ntrees;
9625 	int loading_done;
9626 	int last_ncommits;
9627 	int last_nobj_total;
9628 	int last_p_deltify;
9629 	int last_p_written;
9630 	int last_p_sent;
9631 	int printed_something;
9632 	int sent_something;
9633 	struct got_pathlist_head *delete_branches;
9634 };
9635 
9636 static const struct got_error *
9637 send_progress(void *arg, int ncolored, int nfound, int ntrees,
9638     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
9639     int nobj_written, off_t bytes_sent, const char *refname,
9640     const char *errmsg, int success)
9641 {
9642 	struct got_send_progress_arg *a = arg;
9643 	char scaled_packsize[FMT_SCALED_STRSIZE];
9644 	char scaled_sent[FMT_SCALED_STRSIZE];
9645 	int p_deltify = 0, p_written = 0, p_sent = 0;
9646 	int print_colored = 0, print_found = 0, print_trees = 0;
9647 	int print_searching = 0, print_total = 0;
9648 	int print_deltify = 0, print_written = 0, print_sent = 0;
9649 
9650 	if (a->verbosity < 0)
9651 		return NULL;
9652 
9653 	if (refname) {
9654 		const char *status = success ? "accepted" : "rejected";
9655 
9656 		if (success) {
9657 			struct got_pathlist_entry *pe;
9658 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
9659 				const char *branchname = pe->path;
9660 				if (got_path_cmp(branchname, refname,
9661 				    strlen(branchname), strlen(refname)) == 0) {
9662 					status = "deleted";
9663 					a->sent_something = 1;
9664 					break;
9665 				}
9666 			}
9667 		}
9668 
9669 		if (a->printed_something)
9670 			putchar('\n');
9671 		printf("Server has %s %s", status, refname);
9672 		if (errmsg)
9673 			printf(": %s", errmsg);
9674 		a->printed_something = 1;
9675 		return NULL;
9676 	}
9677 
9678 	if (a->last_ncolored != ncolored) {
9679 		print_colored = 1;
9680 		a->last_ncolored = ncolored;
9681 	}
9682 
9683 	if (a->last_nfound != nfound) {
9684 		print_colored = 1;
9685 		print_found = 1;
9686 		a->last_nfound = nfound;
9687 	}
9688 
9689 	if (a->last_ntrees != ntrees) {
9690 		print_colored = 1;
9691 		print_found = 1;
9692 		print_trees = 1;
9693 		a->last_ntrees = ntrees;
9694 	}
9695 
9696 	if ((print_colored || print_found || print_trees) &&
9697 	    !a->loading_done) {
9698 		printf("\r");
9699 		print_load_info(print_colored, print_found, print_trees,
9700 		    ncolored, nfound, ntrees);
9701 		a->printed_something = 1;
9702 		fflush(stdout);
9703 		return NULL;
9704 	} else if (!a->loading_done) {
9705 		printf("\r");
9706 		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
9707 		printf("\n");
9708 		a->loading_done = 1;
9709 	}
9710 
9711 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
9712 		return got_error_from_errno("fmt_scaled");
9713 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
9714 		return got_error_from_errno("fmt_scaled");
9715 
9716 	if (a->last_ncommits != ncommits) {
9717 		print_searching = 1;
9718 		a->last_ncommits = ncommits;
9719 	}
9720 
9721 	if (a->last_nobj_total != nobj_total) {
9722 		print_searching = 1;
9723 		print_total = 1;
9724 		a->last_nobj_total = nobj_total;
9725 	}
9726 
9727 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
9728 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
9729 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
9730 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
9731 			return got_error(GOT_ERR_NO_SPACE);
9732 	}
9733 
9734 	if (nobj_deltify > 0 || nobj_written > 0) {
9735 		if (nobj_deltify > 0) {
9736 			p_deltify = (nobj_deltify * 100) / nobj_total;
9737 			if (p_deltify != a->last_p_deltify) {
9738 				a->last_p_deltify = p_deltify;
9739 				print_searching = 1;
9740 				print_total = 1;
9741 				print_deltify = 1;
9742 			}
9743 		}
9744 		if (nobj_written > 0) {
9745 			p_written = (nobj_written * 100) / nobj_total;
9746 			if (p_written != a->last_p_written) {
9747 				a->last_p_written = p_written;
9748 				print_searching = 1;
9749 				print_total = 1;
9750 				print_deltify = 1;
9751 				print_written = 1;
9752 			}
9753 		}
9754 	}
9755 
9756 	if (bytes_sent > 0) {
9757 		p_sent = (bytes_sent * 100) / packfile_size;
9758 		if (p_sent != a->last_p_sent) {
9759 			a->last_p_sent = p_sent;
9760 			print_searching = 1;
9761 			print_total = 1;
9762 			print_deltify = 1;
9763 			print_written = 1;
9764 			print_sent = 1;
9765 		}
9766 		a->sent_something = 1;
9767 	}
9768 
9769 	if (print_searching || print_total || print_deltify || print_written ||
9770 	    print_sent)
9771 		printf("\r");
9772 	if (print_searching)
9773 		printf("packing %d reference%s", ncommits,
9774 		    ncommits == 1 ? "" : "s");
9775 	if (print_total)
9776 		printf("; %d object%s", nobj_total,
9777 		    nobj_total == 1 ? "" : "s");
9778 	if (print_deltify)
9779 		printf("; deltify: %d%%", p_deltify);
9780 	if (print_sent)
9781 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9782 		    scaled_packsize, p_sent);
9783 	else if (print_written)
9784 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9785 		    scaled_packsize, p_written);
9786 	if (print_searching || print_total || print_deltify ||
9787 	    print_written || print_sent) {
9788 		a->printed_something = 1;
9789 		fflush(stdout);
9790 	}
9791 	return NULL;
9792 }
9793 
9794 static const struct got_error *
9795 cmd_send(int argc, char *argv[])
9796 {
9797 	const struct got_error *error = NULL;
9798 	char *cwd = NULL, *repo_path = NULL;
9799 	const char *remote_name;
9800 	char *proto = NULL, *host = NULL, *port = NULL;
9801 	char *repo_name = NULL, *server_path = NULL;
9802 	const struct got_remote_repo *remotes;
9803 	struct got_remote_repo *remote = NULL;
9804 	int nremotes, nbranches = 0, ndelete_branches = 0;
9805 	struct got_repository *repo = NULL;
9806 	struct got_worktree *worktree = NULL;
9807 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
9808 	struct got_pathlist_head branches;
9809 	struct got_pathlist_head tags;
9810 	struct got_reflist_head all_branches;
9811 	struct got_reflist_head all_tags;
9812 	struct got_pathlist_head delete_args;
9813 	struct got_pathlist_head delete_branches;
9814 	struct got_reflist_entry *re;
9815 	struct got_pathlist_entry *pe;
9816 	int i, ch, sendfd = -1, sendstatus;
9817 	pid_t sendpid = -1;
9818 	struct got_send_progress_arg spa;
9819 	int verbosity = 0, overwrite_refs = 0;
9820 	int send_all_branches = 0, send_all_tags = 0;
9821 	struct got_reference *ref = NULL;
9822 	int *pack_fds = NULL;
9823 
9824 	TAILQ_INIT(&branches);
9825 	TAILQ_INIT(&tags);
9826 	TAILQ_INIT(&all_branches);
9827 	TAILQ_INIT(&all_tags);
9828 	TAILQ_INIT(&delete_args);
9829 	TAILQ_INIT(&delete_branches);
9830 
9831 	while ((ch = getopt(argc, argv, "ab:d:fqr:Tt:v")) != -1) {
9832 		switch (ch) {
9833 		case 'a':
9834 			send_all_branches = 1;
9835 			break;
9836 		case 'b':
9837 			error = got_pathlist_append(&branches, optarg, NULL);
9838 			if (error)
9839 				return error;
9840 			nbranches++;
9841 			break;
9842 		case 'd':
9843 			error = got_pathlist_append(&delete_args, optarg, NULL);
9844 			if (error)
9845 				return error;
9846 			break;
9847 		case 'f':
9848 			overwrite_refs = 1;
9849 			break;
9850 		case 'q':
9851 			verbosity = -1;
9852 			break;
9853 		case 'r':
9854 			repo_path = realpath(optarg, NULL);
9855 			if (repo_path == NULL)
9856 				return got_error_from_errno2("realpath",
9857 				    optarg);
9858 			got_path_strip_trailing_slashes(repo_path);
9859 			break;
9860 		case 'T':
9861 			send_all_tags = 1;
9862 			break;
9863 		case 't':
9864 			error = got_pathlist_append(&tags, optarg, NULL);
9865 			if (error)
9866 				return error;
9867 			break;
9868 		case 'v':
9869 			if (verbosity < 0)
9870 				verbosity = 0;
9871 			else if (verbosity < 3)
9872 				verbosity++;
9873 			break;
9874 		default:
9875 			usage_send();
9876 			/* NOTREACHED */
9877 		}
9878 	}
9879 	argc -= optind;
9880 	argv += optind;
9881 
9882 	if (send_all_branches && !TAILQ_EMPTY(&branches))
9883 		option_conflict('a', 'b');
9884 	if (send_all_tags && !TAILQ_EMPTY(&tags))
9885 		option_conflict('T', 't');
9886 
9887 
9888 	if (argc == 0)
9889 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
9890 	else if (argc == 1)
9891 		remote_name = argv[0];
9892 	else
9893 		usage_send();
9894 
9895 	cwd = getcwd(NULL, 0);
9896 	if (cwd == NULL) {
9897 		error = got_error_from_errno("getcwd");
9898 		goto done;
9899 	}
9900 
9901 	error = got_repo_pack_fds_open(&pack_fds);
9902 	if (error != NULL)
9903 		goto done;
9904 
9905 	if (repo_path == NULL) {
9906 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
9907 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
9908 			goto done;
9909 		else
9910 			error = NULL;
9911 		if (worktree) {
9912 			repo_path =
9913 			    strdup(got_worktree_get_repo_path(worktree));
9914 			if (repo_path == NULL)
9915 				error = got_error_from_errno("strdup");
9916 			if (error)
9917 				goto done;
9918 		} else {
9919 			repo_path = strdup(cwd);
9920 			if (repo_path == NULL) {
9921 				error = got_error_from_errno("strdup");
9922 				goto done;
9923 			}
9924 		}
9925 	}
9926 
9927 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
9928 	if (error)
9929 		goto done;
9930 
9931 	if (worktree) {
9932 		worktree_conf = got_worktree_get_gotconfig(worktree);
9933 		if (worktree_conf) {
9934 			got_gotconfig_get_remotes(&nremotes, &remotes,
9935 			    worktree_conf);
9936 			for (i = 0; i < nremotes; i++) {
9937 				if (strcmp(remotes[i].name, remote_name) == 0) {
9938 					error = got_repo_remote_repo_dup(&remote,
9939 					    &remotes[i]);
9940 					if (error)
9941 						goto done;
9942 					break;
9943 				}
9944 			}
9945 		}
9946 	}
9947 	if (remote == NULL) {
9948 		repo_conf = got_repo_get_gotconfig(repo);
9949 		if (repo_conf) {
9950 			got_gotconfig_get_remotes(&nremotes, &remotes,
9951 			    repo_conf);
9952 			for (i = 0; i < nremotes; i++) {
9953 				if (strcmp(remotes[i].name, remote_name) == 0) {
9954 					error = got_repo_remote_repo_dup(&remote,
9955 					    &remotes[i]);
9956 					if (error)
9957 						goto done;
9958 					break;
9959 				}
9960 			}
9961 		}
9962 	}
9963 	if (remote == NULL) {
9964 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
9965 		for (i = 0; i < nremotes; i++) {
9966 			if (strcmp(remotes[i].name, remote_name) == 0) {
9967 				error = got_repo_remote_repo_dup(&remote,
9968 				    &remotes[i]);
9969 				if (error)
9970 					goto done;
9971 				break;
9972 			}
9973 		}
9974 	}
9975 	if (remote == NULL) {
9976 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
9977 		goto done;
9978 	}
9979 
9980 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
9981 	    &repo_name, remote->send_url);
9982 	if (error)
9983 		goto done;
9984 
9985 	if (strcmp(proto, "git") == 0) {
9986 #ifndef PROFILE
9987 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9988 		    "sendfd dns inet unveil", NULL) == -1)
9989 			err(1, "pledge");
9990 #endif
9991 	} else if (strcmp(proto, "git+ssh") == 0 ||
9992 	    strcmp(proto, "ssh") == 0) {
9993 #ifndef PROFILE
9994 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9995 		    "sendfd unveil", NULL) == -1)
9996 			err(1, "pledge");
9997 #endif
9998 	} else if (strcmp(proto, "http") == 0 ||
9999 	    strcmp(proto, "git+http") == 0) {
10000 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
10001 		goto done;
10002 	} else {
10003 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
10004 		goto done;
10005 	}
10006 
10007 	error = got_dial_apply_unveil(proto);
10008 	if (error)
10009 		goto done;
10010 
10011 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
10012 	if (error)
10013 		goto done;
10014 
10015 	if (send_all_branches) {
10016 		error = got_ref_list(&all_branches, repo, "refs/heads",
10017 		    got_ref_cmp_by_name, NULL);
10018 		if (error)
10019 			goto done;
10020 		TAILQ_FOREACH(re, &all_branches, entry) {
10021 			const char *branchname = got_ref_get_name(re->ref);
10022 			error = got_pathlist_append(&branches,
10023 			    branchname, NULL);
10024 			if (error)
10025 				goto done;
10026 			nbranches++;
10027 		}
10028 	} else if (nbranches == 0) {
10029 		for (i = 0; i < remote->nsend_branches; i++) {
10030 			error = got_pathlist_append(&branches,
10031 			    remote->send_branches[i], NULL);
10032 			if (error)
10033 				goto done;
10034 		}
10035 	}
10036 
10037 	if (send_all_tags) {
10038 		error = got_ref_list(&all_tags, repo, "refs/tags",
10039 		    got_ref_cmp_by_name, NULL);
10040 		if (error)
10041 			goto done;
10042 		TAILQ_FOREACH(re, &all_tags, entry) {
10043 			const char *tagname = got_ref_get_name(re->ref);
10044 			error = got_pathlist_append(&tags,
10045 			    tagname, NULL);
10046 			if (error)
10047 				goto done;
10048 		}
10049 	}
10050 
10051 	/*
10052 	 * To prevent accidents only branches in refs/heads/ can be deleted
10053 	 * with 'got send -d'.
10054 	 * Deleting anything else requires local repository access or Git.
10055 	 */
10056 	TAILQ_FOREACH(pe, &delete_args, entry) {
10057 		const char *branchname = pe->path;
10058 		char *s;
10059 		struct got_pathlist_entry *new;
10060 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
10061 			s = strdup(branchname);
10062 			if (s == NULL) {
10063 				error = got_error_from_errno("strdup");
10064 				goto done;
10065 			}
10066 		} else {
10067 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
10068 				error = got_error_from_errno("asprintf");
10069 				goto done;
10070 			}
10071 		}
10072 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
10073 		if (error || new == NULL /* duplicate */)
10074 			free(s);
10075 		if (error)
10076 			goto done;
10077 		ndelete_branches++;
10078 	}
10079 
10080 	if (nbranches == 0 && ndelete_branches == 0) {
10081 		struct got_reference *head_ref;
10082 		if (worktree)
10083 			error = got_ref_open(&head_ref, repo,
10084 			    got_worktree_get_head_ref_name(worktree), 0);
10085 		else
10086 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
10087 		if (error)
10088 			goto done;
10089 		if (got_ref_is_symbolic(head_ref)) {
10090 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
10091 			got_ref_close(head_ref);
10092 			if (error)
10093 				goto done;
10094 		} else
10095 			ref = head_ref;
10096 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
10097 		    NULL);
10098 		if (error)
10099 			goto done;
10100 		nbranches++;
10101 	}
10102 
10103 	if (worktree) {
10104 		/* Release work tree lock. */
10105 		got_worktree_close(worktree);
10106 		worktree = NULL;
10107 	}
10108 
10109 	if (verbosity >= 0) {
10110 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
10111 		    remote->name, proto, host,
10112 		    port ? ":" : "", port ? port : "",
10113 		    *server_path == '/' ? "" : "/", server_path);
10114 	}
10115 
10116 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
10117 	    server_path, verbosity);
10118 	if (error)
10119 		goto done;
10120 
10121 	memset(&spa, 0, sizeof(spa));
10122 	spa.last_scaled_packsize[0] = '\0';
10123 	spa.last_p_deltify = -1;
10124 	spa.last_p_written = -1;
10125 	spa.verbosity = verbosity;
10126 	spa.delete_branches = &delete_branches;
10127 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
10128 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
10129 	    check_cancelled, NULL);
10130 	if (spa.printed_something)
10131 		putchar('\n');
10132 	if (error)
10133 		goto done;
10134 	if (!spa.sent_something && verbosity >= 0)
10135 		printf("Already up-to-date\n");
10136 done:
10137 	if (sendpid > 0) {
10138 		if (kill(sendpid, SIGTERM) == -1)
10139 			error = got_error_from_errno("kill");
10140 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
10141 			error = got_error_from_errno("waitpid");
10142 	}
10143 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
10144 		error = got_error_from_errno("close");
10145 	if (repo) {
10146 		const struct got_error *close_err = got_repo_close(repo);
10147 		if (error == NULL)
10148 			error = close_err;
10149 	}
10150 	if (worktree)
10151 		got_worktree_close(worktree);
10152 	if (pack_fds) {
10153 		const struct got_error *pack_err =
10154 		    got_repo_pack_fds_close(pack_fds);
10155 		if (error == NULL)
10156 			error = pack_err;
10157 	}
10158 	if (ref)
10159 		got_ref_close(ref);
10160 	got_repo_free_remote_repo_data(remote);
10161 	free(remote);
10162 	got_pathlist_free(&branches, GOT_PATHLIST_FREE_NONE);
10163 	got_pathlist_free(&tags, GOT_PATHLIST_FREE_NONE);
10164 	got_ref_list_free(&all_branches);
10165 	got_ref_list_free(&all_tags);
10166 	got_pathlist_free(&delete_args, GOT_PATHLIST_FREE_NONE);
10167 	got_pathlist_free(&delete_branches, GOT_PATHLIST_FREE_PATH);
10168 	free(cwd);
10169 	free(repo_path);
10170 	free(proto);
10171 	free(host);
10172 	free(port);
10173 	free(server_path);
10174 	free(repo_name);
10175 	return error;
10176 }
10177 
10178 /*
10179  * Print and if delete is set delete all ref_prefix references.
10180  * If wanted_ref is not NULL, only print or delete this reference.
10181  */
10182 static const struct got_error *
10183 process_logmsg_refs(const char *ref_prefix, size_t prefix_len,
10184     const char *wanted_ref, int delete, struct got_worktree *worktree,
10185     struct got_repository *repo)
10186 {
10187 	const struct got_error			*err;
10188 	struct got_pathlist_head		 paths;
10189 	struct got_reflist_head			 refs;
10190 	struct got_reflist_entry		*re;
10191 	struct got_reflist_object_id_map	*refs_idmap = NULL;
10192 	struct got_commit_object		*commit = NULL;
10193 	struct got_object_id			*id = NULL;
10194 	const char				*header_prefix;
10195 	char					*uuidstr = NULL;
10196 	int					 found = 0;
10197 
10198 	TAILQ_INIT(&refs);
10199 	TAILQ_INIT(&paths);
10200 
10201 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, repo);
10202 	if (err)
10203 		goto done;
10204 
10205 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
10206 	if (err)
10207 		goto done;
10208 
10209 	if (worktree != NULL) {
10210 		err = got_worktree_get_uuid(&uuidstr, worktree);
10211 		if (err)
10212 			goto done;
10213 	}
10214 
10215 	if (wanted_ref) {
10216 		if (strncmp(wanted_ref, "refs/heads/", 11) == 0)
10217 			wanted_ref += 11;
10218 	}
10219 
10220 	if (strcmp(ref_prefix, GOT_WORKTREE_BACKOUT_REF_PREFIX) == 0)
10221 		header_prefix = "backout";
10222 	else
10223 		header_prefix = "cherrypick";
10224 
10225 	TAILQ_FOREACH(re, &refs, entry) {
10226 		const char *refname, *wt;
10227 
10228 		refname = got_ref_get_name(re->ref);
10229 
10230 		err = check_cancelled(NULL);
10231 		if (err)
10232 			goto done;
10233 
10234 		if (strncmp(refname, ref_prefix, prefix_len) == 0)
10235 			refname += prefix_len + 1;  /* skip '-' delimiter */
10236 		else
10237 			continue;
10238 
10239 		wt = refname;
10240 
10241 		if (worktree == NULL || strncmp(refname, uuidstr,
10242 		    GOT_WORKTREE_UUID_STRLEN) == 0)
10243 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
10244 		else
10245 			continue;
10246 
10247 		err = got_repo_match_object_id(&id, NULL, refname,
10248 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10249 		if (err)
10250 			goto done;
10251 
10252 		err = got_object_open_as_commit(&commit, repo, id);
10253 		if (err)
10254 			goto done;
10255 
10256 		if (wanted_ref)
10257 			found = strncmp(wanted_ref, refname,
10258 			    strlen(wanted_ref)) == 0;
10259 		if (wanted_ref && !found) {
10260 			struct got_reflist_head	*ci_refs;
10261 
10262 			ci_refs = got_reflist_object_id_map_lookup(refs_idmap,
10263 			    id);
10264 
10265 			if (ci_refs) {
10266 				char		*refs_str = NULL;
10267 				char const	*r = NULL;
10268 
10269 				err = build_refs_str(&refs_str, ci_refs, id,
10270 				    repo, 1);
10271 				if (err)
10272 					goto done;
10273 
10274 				r = refs_str;
10275 				while (r) {
10276 					if (strncmp(r, wanted_ref,
10277 					    strlen(wanted_ref)) == 0) {
10278 						found = 1;
10279 						break;
10280 					}
10281 					r = strchr(r, ' ');
10282 					if (r)
10283 						++r;
10284 				}
10285 				free(refs_str);
10286 			}
10287 		}
10288 
10289 		if (wanted_ref == NULL || found) {
10290 			if (delete) {
10291 				err = got_ref_delete(re->ref, repo);
10292 				if (err)
10293 					goto done;
10294 				printf("Deleted: ");
10295 				err = print_commit_oneline(commit, id, repo,
10296 				    refs_idmap);
10297 			} else {
10298 				/*
10299 				 * Print paths modified by commit to help
10300 				 * associate commits with worktree changes.
10301 				 */
10302 				err = get_changed_paths(&paths, commit,
10303 				    repo, NULL);
10304 				if (err)
10305 					goto done;
10306 
10307 				err = print_commit(commit, id, repo, NULL,
10308 				    &paths, NULL, 0, 0, refs_idmap, NULL,
10309 				    header_prefix);
10310 				got_pathlist_free(&paths,
10311 				    GOT_PATHLIST_FREE_ALL);
10312 
10313 				if (worktree == NULL)
10314 					printf("work tree: %.*s\n\n",
10315 					    GOT_WORKTREE_UUID_STRLEN, wt);
10316 			}
10317 			if (err || found)
10318 				goto done;
10319 		}
10320 
10321 		got_object_commit_close(commit);
10322 		commit = NULL;
10323 		free(id);
10324 		id = NULL;
10325 	}
10326 
10327 	if (wanted_ref != NULL && !found)
10328 		err = got_error_fmt(GOT_ERR_NOT_REF, "%s", wanted_ref);
10329 
10330 done:
10331 	free(id);
10332 	free(uuidstr);
10333 	got_ref_list_free(&refs);
10334 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
10335 	if (refs_idmap)
10336 		got_reflist_object_id_map_free(refs_idmap);
10337 	if (commit)
10338 		got_object_commit_close(commit);
10339 	return err;
10340 }
10341 
10342 /*
10343  * Create new temp "logmsg" ref of the backed-out or cherrypicked commit
10344  * identified by id for log messages to prepopulate the editor on commit.
10345  */
10346 static const struct got_error *
10347 logmsg_ref(struct got_object_id *id, const char *prefix,
10348     struct got_worktree *worktree, struct got_repository *repo)
10349 {
10350 	const struct got_error	*err = NULL;
10351 	char			*idstr, *ref = NULL, *refname = NULL;
10352 	int			 histedit_in_progress;
10353 	int			 rebase_in_progress, merge_in_progress;
10354 
10355 	/*
10356 	 * Silenty refuse to create merge reference if any histedit, merge,
10357 	 * or rebase operation is in progress.
10358 	 */
10359 	err = got_worktree_histedit_in_progress(&histedit_in_progress,
10360 	    worktree);
10361 	if (err)
10362 		return err;
10363 	if (histedit_in_progress)
10364 		return NULL;
10365 
10366 	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10367 	if (err)
10368 		return err;
10369 	if (rebase_in_progress)
10370 		return NULL;
10371 
10372 	err = got_worktree_merge_in_progress(&merge_in_progress, worktree,
10373 	    repo);
10374 	if (err)
10375 		return err;
10376 	if (merge_in_progress)
10377 		return NULL;
10378 
10379 	err = got_object_id_str(&idstr, id);
10380 	if (err)
10381 		return err;
10382 
10383 	err = got_worktree_get_logmsg_ref_name(&refname, worktree, prefix);
10384 	if (err)
10385 		goto done;
10386 
10387 	if (asprintf(&ref, "%s-%s", refname, idstr) == -1) {
10388 		err = got_error_from_errno("asprintf");
10389 		goto done;
10390 	}
10391 
10392 	err = create_ref(ref, got_worktree_get_base_commit_id(worktree),
10393 	    -1, repo);
10394 done:
10395 	free(ref);
10396 	free(idstr);
10397 	free(refname);
10398 	return err;
10399 }
10400 
10401 __dead static void
10402 usage_cherrypick(void)
10403 {
10404 	fprintf(stderr, "usage: %s cherrypick [-lX] [commit-id]\n",
10405 	    getprogname());
10406 	exit(1);
10407 }
10408 
10409 static const struct got_error *
10410 cmd_cherrypick(int argc, char *argv[])
10411 {
10412 	const struct got_error *error = NULL;
10413 	struct got_worktree *worktree = NULL;
10414 	struct got_repository *repo = NULL;
10415 	char *cwd = NULL, *commit_id_str = NULL, *keyword_idstr = NULL;
10416 	struct got_object_id *commit_id = NULL;
10417 	struct got_commit_object *commit = NULL;
10418 	struct got_object_qid *pid;
10419 	int ch, list_refs = 0, remove_refs = 0;
10420 	struct got_update_progress_arg upa;
10421 	int *pack_fds = NULL;
10422 
10423 #ifndef PROFILE
10424 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10425 	    "unveil", NULL) == -1)
10426 		err(1, "pledge");
10427 #endif
10428 
10429 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10430 		switch (ch) {
10431 		case 'l':
10432 			list_refs = 1;
10433 			break;
10434 		case 'X':
10435 			remove_refs = 1;
10436 			break;
10437 		default:
10438 			usage_cherrypick();
10439 			/* NOTREACHED */
10440 		}
10441 	}
10442 
10443 	argc -= optind;
10444 	argv += optind;
10445 
10446 	if (list_refs || remove_refs) {
10447 		if (argc != 0 && argc != 1)
10448 			usage_cherrypick();
10449 	} else if (argc != 1)
10450 		usage_cherrypick();
10451 	if (list_refs && remove_refs)
10452 		option_conflict('l', 'X');
10453 
10454 	cwd = getcwd(NULL, 0);
10455 	if (cwd == NULL) {
10456 		error = got_error_from_errno("getcwd");
10457 		goto done;
10458 	}
10459 
10460 	error = got_repo_pack_fds_open(&pack_fds);
10461 	if (error != NULL)
10462 		goto done;
10463 
10464 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
10465 	if (error) {
10466 		if (list_refs || remove_refs) {
10467 			if (error->code != GOT_ERR_NOT_WORKTREE)
10468 				goto done;
10469 		} else {
10470 			if (error->code == GOT_ERR_NOT_WORKTREE)
10471 				error = wrap_not_worktree_error(error,
10472 				    "cherrypick", cwd);
10473 			goto done;
10474 		}
10475 	}
10476 
10477 	error = got_repo_open(&repo,
10478 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10479 	    NULL, pack_fds);
10480 	if (error != NULL)
10481 		goto done;
10482 
10483 	error = apply_unveil(got_repo_get_path(repo), 0,
10484 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10485 	if (error)
10486 		goto done;
10487 
10488 	if (list_refs || remove_refs) {
10489 		error = process_logmsg_refs(GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
10490 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN,
10491 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10492 		goto done;
10493 	}
10494 
10495 	error = got_keyword_to_idstr(&keyword_idstr, argv[0], repo, worktree);
10496 	if (error != NULL)
10497 		goto done;
10498 
10499 	error = got_repo_match_object_id(&commit_id, NULL,
10500 	    keyword_idstr != NULL ? keyword_idstr : argv[0],
10501 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10502 	if (error)
10503 		goto done;
10504 	error = got_object_id_str(&commit_id_str, commit_id);
10505 	if (error)
10506 		goto done;
10507 
10508 	error = got_object_open_as_commit(&commit, repo, commit_id);
10509 	if (error)
10510 		goto done;
10511 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10512 	memset(&upa, 0, sizeof(upa));
10513 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
10514 	    commit_id, repo, update_progress, &upa, check_cancelled,
10515 	    NULL);
10516 	if (error != NULL)
10517 		goto done;
10518 
10519 	if (upa.did_something) {
10520 		error = logmsg_ref(commit_id,
10521 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX, worktree, repo);
10522 		if (error)
10523 			goto done;
10524 		printf("Merged commit %s\n", commit_id_str);
10525 	}
10526 	print_merge_progress_stats(&upa);
10527 done:
10528 	free(cwd);
10529 	free(keyword_idstr);
10530 	if (commit)
10531 		got_object_commit_close(commit);
10532 	free(commit_id_str);
10533 	if (worktree)
10534 		got_worktree_close(worktree);
10535 	if (repo) {
10536 		const struct got_error *close_err = got_repo_close(repo);
10537 		if (error == NULL)
10538 			error = close_err;
10539 	}
10540 	if (pack_fds) {
10541 		const struct got_error *pack_err =
10542 		    got_repo_pack_fds_close(pack_fds);
10543 		if (error == NULL)
10544 			error = pack_err;
10545 	}
10546 
10547 	return error;
10548 }
10549 
10550 __dead static void
10551 usage_backout(void)
10552 {
10553 	fprintf(stderr, "usage: %s backout [-lX] [commit-id]\n", getprogname());
10554 	exit(1);
10555 }
10556 
10557 static const struct got_error *
10558 cmd_backout(int argc, char *argv[])
10559 {
10560 	const struct got_error *error = NULL;
10561 	struct got_worktree *worktree = NULL;
10562 	struct got_repository *repo = NULL;
10563 	char *cwd = NULL, *commit_id_str = NULL, *keyword_idstr = NULL;
10564 	struct got_object_id *commit_id = NULL;
10565 	struct got_commit_object *commit = NULL;
10566 	struct got_object_qid *pid;
10567 	int ch, list_refs = 0, remove_refs = 0;
10568 	struct got_update_progress_arg upa;
10569 	int *pack_fds = NULL;
10570 
10571 #ifndef PROFILE
10572 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10573 	    "unveil", NULL) == -1)
10574 		err(1, "pledge");
10575 #endif
10576 
10577 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10578 		switch (ch) {
10579 		case 'l':
10580 			list_refs = 1;
10581 			break;
10582 		case 'X':
10583 			remove_refs = 1;
10584 			break;
10585 		default:
10586 			usage_backout();
10587 			/* NOTREACHED */
10588 		}
10589 	}
10590 
10591 	argc -= optind;
10592 	argv += optind;
10593 
10594 	if (list_refs || remove_refs) {
10595 		if (argc != 0 && argc != 1)
10596 			usage_backout();
10597 	} else if (argc != 1)
10598 		usage_backout();
10599 	if (list_refs && remove_refs)
10600 		option_conflict('l', 'X');
10601 
10602 	cwd = getcwd(NULL, 0);
10603 	if (cwd == NULL) {
10604 		error = got_error_from_errno("getcwd");
10605 		goto done;
10606 	}
10607 
10608 	error = got_repo_pack_fds_open(&pack_fds);
10609 	if (error != NULL)
10610 		goto done;
10611 
10612 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
10613 	if (error) {
10614 		if (list_refs || remove_refs) {
10615 			if (error->code != GOT_ERR_NOT_WORKTREE)
10616 				goto done;
10617 		} else {
10618 			if (error->code == GOT_ERR_NOT_WORKTREE)
10619 				error = wrap_not_worktree_error(error,
10620 				    "backout", cwd);
10621 			goto done;
10622 		}
10623 	}
10624 
10625 	error = got_repo_open(&repo,
10626 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10627 	    NULL, pack_fds);
10628 	if (error != NULL)
10629 		goto done;
10630 
10631 	error = apply_unveil(got_repo_get_path(repo), 0,
10632 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10633 	if (error)
10634 		goto done;
10635 
10636 	if (list_refs || remove_refs) {
10637 		error = process_logmsg_refs(GOT_WORKTREE_BACKOUT_REF_PREFIX,
10638 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN,
10639 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10640 		goto done;
10641 	}
10642 
10643 	error = got_keyword_to_idstr(&keyword_idstr, argv[0], repo, worktree);
10644 	if (error != NULL)
10645 		goto done;
10646 
10647 	error = got_repo_match_object_id(&commit_id, NULL,
10648 	    keyword_idstr != NULL ? keyword_idstr : argv[0],
10649 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10650 	if (error)
10651 		goto done;
10652 	error = got_object_id_str(&commit_id_str, commit_id);
10653 	if (error)
10654 		goto done;
10655 
10656 	error = got_object_open_as_commit(&commit, repo, commit_id);
10657 	if (error)
10658 		goto done;
10659 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10660 	if (pid == NULL) {
10661 		error = got_error(GOT_ERR_ROOT_COMMIT);
10662 		goto done;
10663 	}
10664 
10665 	memset(&upa, 0, sizeof(upa));
10666 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
10667 	    repo, update_progress, &upa, check_cancelled, NULL);
10668 	if (error != NULL)
10669 		goto done;
10670 
10671 	if (upa.did_something) {
10672 		error = logmsg_ref(commit_id, GOT_WORKTREE_BACKOUT_REF_PREFIX,
10673 		    worktree, repo);
10674 		if (error)
10675 			goto done;
10676 		printf("Backed out commit %s\n", commit_id_str);
10677 	}
10678 	print_merge_progress_stats(&upa);
10679 done:
10680 	free(cwd);
10681 	free(keyword_idstr);
10682 	if (commit)
10683 		got_object_commit_close(commit);
10684 	free(commit_id_str);
10685 	if (worktree)
10686 		got_worktree_close(worktree);
10687 	if (repo) {
10688 		const struct got_error *close_err = got_repo_close(repo);
10689 		if (error == NULL)
10690 			error = close_err;
10691 	}
10692 	if (pack_fds) {
10693 		const struct got_error *pack_err =
10694 		    got_repo_pack_fds_close(pack_fds);
10695 		if (error == NULL)
10696 			error = pack_err;
10697 	}
10698 	return error;
10699 }
10700 
10701 __dead static void
10702 usage_rebase(void)
10703 {
10704 	fprintf(stderr, "usage: %s rebase [-aCclX] [branch]\n", getprogname());
10705 	exit(1);
10706 }
10707 
10708 static void
10709 trim_logmsg(char *logmsg, int limit)
10710 {
10711 	char *nl;
10712 	size_t len;
10713 
10714 	len = strlen(logmsg);
10715 	if (len > limit)
10716 		len = limit;
10717 	logmsg[len] = '\0';
10718 	nl = strchr(logmsg, '\n');
10719 	if (nl)
10720 		*nl = '\0';
10721 }
10722 
10723 static const struct got_error *
10724 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
10725 {
10726 	const struct got_error *err;
10727 	char *logmsg0 = NULL;
10728 	const char *s;
10729 
10730 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10731 	if (err)
10732 		return err;
10733 
10734 	s = logmsg0;
10735 	while (isspace((unsigned char)s[0]))
10736 		s++;
10737 
10738 	*logmsg = strdup(s);
10739 	if (*logmsg == NULL) {
10740 		err = got_error_from_errno("strdup");
10741 		goto done;
10742 	}
10743 
10744 	trim_logmsg(*logmsg, limit);
10745 done:
10746 	free(logmsg0);
10747 	return err;
10748 }
10749 
10750 static const struct got_error *
10751 show_rebase_merge_conflict(struct got_object_id *id,
10752     struct got_repository *repo)
10753 {
10754 	const struct got_error *err;
10755 	struct got_commit_object *commit = NULL;
10756 	char *id_str = NULL, *logmsg = NULL;
10757 
10758 	err = got_object_open_as_commit(&commit, repo, id);
10759 	if (err)
10760 		return err;
10761 
10762 	err = got_object_id_str(&id_str, id);
10763 	if (err)
10764 		goto done;
10765 
10766 	id_str[12] = '\0';
10767 
10768 	err = get_short_logmsg(&logmsg, 42, commit);
10769 	if (err)
10770 		goto done;
10771 
10772 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
10773 done:
10774 	free(id_str);
10775 	got_object_commit_close(commit);
10776 	free(logmsg);
10777 	return err;
10778 }
10779 
10780 static const struct got_error *
10781 show_rebase_progress(struct got_commit_object *commit,
10782     struct got_object_id *old_id, struct got_object_id *new_id)
10783 {
10784 	const struct got_error *err;
10785 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
10786 
10787 	err = got_object_id_str(&old_id_str, old_id);
10788 	if (err)
10789 		goto done;
10790 
10791 	if (new_id) {
10792 		err = got_object_id_str(&new_id_str, new_id);
10793 		if (err)
10794 			goto done;
10795 	}
10796 
10797 	old_id_str[12] = '\0';
10798 	if (new_id_str)
10799 		new_id_str[12] = '\0';
10800 
10801 	err = get_short_logmsg(&logmsg, 42, commit);
10802 	if (err)
10803 		goto done;
10804 
10805 	printf("%s -> %s: %s\n", old_id_str,
10806 	    new_id_str ? new_id_str : "no-op change", logmsg);
10807 done:
10808 	free(old_id_str);
10809 	free(new_id_str);
10810 	free(logmsg);
10811 	return err;
10812 }
10813 
10814 static const struct got_error *
10815 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
10816     struct got_reference *branch, struct got_reference *tmp_branch,
10817     struct got_repository *repo, int create_backup)
10818 {
10819 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
10820 	return got_worktree_rebase_complete(worktree, fileindex,
10821 	    tmp_branch, branch, repo, create_backup);
10822 }
10823 
10824 static const struct got_error *
10825 rebase_commit(struct got_pathlist_head *merged_paths,
10826     struct got_worktree *worktree, struct got_fileindex *fileindex,
10827     struct got_reference *tmp_branch, const char *committer,
10828     struct got_object_id *commit_id, int allow_conflict,
10829     struct got_repository *repo)
10830 {
10831 	const struct got_error *error;
10832 	struct got_commit_object *commit;
10833 	struct got_object_id *new_commit_id;
10834 
10835 	error = got_object_open_as_commit(&commit, repo, commit_id);
10836 	if (error)
10837 		return error;
10838 
10839 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
10840 	    worktree, fileindex, tmp_branch, committer, commit, commit_id,
10841 	    allow_conflict, repo);
10842 	if (error) {
10843 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
10844 			goto done;
10845 		error = show_rebase_progress(commit, commit_id, NULL);
10846 	} else {
10847 		error = show_rebase_progress(commit, commit_id, new_commit_id);
10848 		free(new_commit_id);
10849 	}
10850 done:
10851 	got_object_commit_close(commit);
10852 	return error;
10853 }
10854 
10855 struct check_path_prefix_arg {
10856 	const char *path_prefix;
10857 	size_t len;
10858 	int errcode;
10859 };
10860 
10861 static const struct got_error *
10862 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
10863     struct got_blob_object *blob2, FILE *f1, FILE *f2,
10864     struct got_object_id *id1, struct got_object_id *id2,
10865     const char *path1, const char *path2,
10866     mode_t mode1, mode_t mode2, struct got_repository *repo)
10867 {
10868 	struct check_path_prefix_arg *a = arg;
10869 
10870 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
10871 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
10872 		return got_error(a->errcode);
10873 
10874 	return NULL;
10875 }
10876 
10877 static const struct got_error *
10878 check_path_prefix(struct got_object_id *parent_id,
10879     struct got_object_id *commit_id, const char *path_prefix,
10880     int errcode, struct got_repository *repo)
10881 {
10882 	const struct got_error *err;
10883 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
10884 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
10885 	struct check_path_prefix_arg cpp_arg;
10886 
10887 	if (got_path_is_root_dir(path_prefix))
10888 		return NULL;
10889 
10890 	err = got_object_open_as_commit(&commit, repo, commit_id);
10891 	if (err)
10892 		goto done;
10893 
10894 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
10895 	if (err)
10896 		goto done;
10897 
10898 	err = got_object_open_as_tree(&tree1, repo,
10899 	    got_object_commit_get_tree_id(parent_commit));
10900 	if (err)
10901 		goto done;
10902 
10903 	err = got_object_open_as_tree(&tree2, repo,
10904 	    got_object_commit_get_tree_id(commit));
10905 	if (err)
10906 		goto done;
10907 
10908 	cpp_arg.path_prefix = path_prefix;
10909 	while (cpp_arg.path_prefix[0] == '/')
10910 		cpp_arg.path_prefix++;
10911 	cpp_arg.len = strlen(cpp_arg.path_prefix);
10912 	cpp_arg.errcode = errcode;
10913 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
10914 	    check_path_prefix_in_diff, &cpp_arg, 0);
10915 done:
10916 	if (tree1)
10917 		got_object_tree_close(tree1);
10918 	if (tree2)
10919 		got_object_tree_close(tree2);
10920 	if (commit)
10921 		got_object_commit_close(commit);
10922 	if (parent_commit)
10923 		got_object_commit_close(parent_commit);
10924 	return err;
10925 }
10926 
10927 static const struct got_error *
10928 collect_commits(struct got_object_id_queue *commits,
10929     struct got_object_id *initial_commit_id,
10930     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
10931     const char *path_prefix, int path_prefix_errcode,
10932     struct got_repository *repo)
10933 {
10934 	const struct got_error *err = NULL;
10935 	struct got_commit_graph *graph = NULL;
10936 	struct got_object_id parent_id, commit_id;
10937 	struct got_object_qid *qid;
10938 
10939 	err = got_commit_graph_open(&graph, "/", 1);
10940 	if (err)
10941 		return err;
10942 
10943 	err = got_commit_graph_bfsort(graph, iter_start_id, repo,
10944 	    check_cancelled, NULL);
10945 	if (err)
10946 		goto done;
10947 
10948 	memcpy(&commit_id, initial_commit_id, sizeof(commit_id));
10949 	while (got_object_id_cmp(&commit_id, iter_stop_id) != 0) {
10950 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
10951 		    check_cancelled, NULL);
10952 		if (err) {
10953 			if (err->code == GOT_ERR_ITER_COMPLETED) {
10954 				err = got_error_msg(GOT_ERR_ANCESTRY,
10955 				    "ran out of commits to rebase before "
10956 				    "youngest common ancestor commit has "
10957 				    "been reached?!?");
10958 			}
10959 			goto done;
10960 		} else {
10961 			err = check_path_prefix(&parent_id, &commit_id,
10962 			    path_prefix, path_prefix_errcode, repo);
10963 			if (err)
10964 				goto done;
10965 
10966 			err = got_object_qid_alloc(&qid, &commit_id);
10967 			if (err)
10968 				goto done;
10969 			STAILQ_INSERT_HEAD(commits, qid, entry);
10970 
10971 			memcpy(&commit_id, &parent_id, sizeof(commit_id));
10972 		}
10973 	}
10974 done:
10975 	got_commit_graph_close(graph);
10976 	return err;
10977 }
10978 
10979 static const struct got_error *
10980 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
10981 {
10982 	const struct got_error *err = NULL;
10983 	time_t committer_time;
10984 	struct tm tm;
10985 	char datebuf[11]; /* YYYY-MM-DD + NUL */
10986 	char *author0 = NULL, *author, *smallerthan;
10987 	char *logmsg0 = NULL, *logmsg, *newline;
10988 
10989 	committer_time = got_object_commit_get_committer_time(commit);
10990 	if (gmtime_r(&committer_time, &tm) == NULL)
10991 		return got_error_from_errno("gmtime_r");
10992 	if (strftime(datebuf, sizeof(datebuf), "%F", &tm) == 0)
10993 		return got_error(GOT_ERR_NO_SPACE);
10994 
10995 	author0 = strdup(got_object_commit_get_author(commit));
10996 	if (author0 == NULL)
10997 		return got_error_from_errno("strdup");
10998 	author = author0;
10999 	smallerthan = strchr(author, '<');
11000 	if (smallerthan && smallerthan[1] != '\0')
11001 		author = smallerthan + 1;
11002 	author[strcspn(author, "@>")] = '\0';
11003 
11004 	err = got_object_commit_get_logmsg(&logmsg0, commit);
11005 	if (err)
11006 		goto done;
11007 	logmsg = logmsg0;
11008 	while (*logmsg == '\n')
11009 		logmsg++;
11010 	newline = strchr(logmsg, '\n');
11011 	if (newline)
11012 		*newline = '\0';
11013 
11014 	if (asprintf(brief_str, "%s %s  %s",
11015 	    datebuf, author, logmsg) == -1)
11016 		err = got_error_from_errno("asprintf");
11017 done:
11018 	free(author0);
11019 	free(logmsg0);
11020 	return err;
11021 }
11022 
11023 static const struct got_error *
11024 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
11025     struct got_repository *repo)
11026 {
11027 	const struct got_error *err;
11028 	char *id_str;
11029 
11030 	err = got_object_id_str(&id_str, id);
11031 	if (err)
11032 		return err;
11033 
11034 	err = got_ref_delete(ref, repo);
11035 	if (err)
11036 		goto done;
11037 
11038 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
11039 done:
11040 	free(id_str);
11041 	return err;
11042 }
11043 
11044 static const struct got_error *
11045 print_backup_ref(const char *branch_name, const char *new_id_str,
11046     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
11047     struct got_reflist_object_id_map *refs_idmap,
11048     struct got_repository *repo)
11049 {
11050 	const struct got_error *err = NULL;
11051 	struct got_reflist_head *refs;
11052 	char *refs_str = NULL;
11053 	struct got_object_id *new_commit_id = NULL;
11054 	struct got_commit_object *new_commit = NULL;
11055 	char *new_commit_brief_str = NULL;
11056 	struct got_object_id *yca_id = NULL;
11057 	struct got_commit_object *yca_commit = NULL;
11058 	char *yca_id_str = NULL, *yca_brief_str = NULL;
11059 	char *custom_refs_str;
11060 
11061 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
11062 		return got_error_from_errno("asprintf");
11063 
11064 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL, NULL,
11065 	    0, 0, refs_idmap, custom_refs_str, NULL);
11066 	if (err)
11067 		goto done;
11068 
11069 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
11070 	if (err)
11071 		goto done;
11072 
11073 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
11074 	if (refs) {
11075 		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
11076 		if (err)
11077 			goto done;
11078 	}
11079 
11080 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
11081 	if (err)
11082 		goto done;
11083 
11084 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
11085 	if (err)
11086 		goto done;
11087 
11088 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
11089 	    old_commit_id, new_commit_id, 1, 0, repo, check_cancelled, NULL);
11090 	if (err)
11091 		goto done;
11092 
11093 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
11094 	    refs_str ? " (" : "", refs_str ? refs_str : "",
11095 	    refs_str ? ")" : "", new_commit_brief_str);
11096 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
11097 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
11098 		free(refs_str);
11099 		refs_str = NULL;
11100 
11101 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
11102 		if (err)
11103 			goto done;
11104 
11105 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
11106 		if (err)
11107 			goto done;
11108 
11109 		err = got_object_id_str(&yca_id_str, yca_id);
11110 		if (err)
11111 			goto done;
11112 
11113 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
11114 		if (refs) {
11115 			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
11116 			if (err)
11117 				goto done;
11118 		}
11119 		printf("history forked at %s%s%s%s\n %s\n",
11120 		    yca_id_str,
11121 		    refs_str ? " (" : "", refs_str ? refs_str : "",
11122 		    refs_str ? ")" : "", yca_brief_str);
11123 	}
11124 done:
11125 	free(custom_refs_str);
11126 	free(new_commit_id);
11127 	free(refs_str);
11128 	free(yca_id);
11129 	free(yca_id_str);
11130 	free(yca_brief_str);
11131 	if (new_commit)
11132 		got_object_commit_close(new_commit);
11133 	if (yca_commit)
11134 		got_object_commit_close(yca_commit);
11135 
11136 	return err;
11137 }
11138 
11139 static const struct got_error *
11140 worktree_has_logmsg_ref(const char *caller, struct got_worktree *worktree,
11141     struct got_repository *repo)
11142 {
11143 	const struct got_error		*err;
11144 	struct got_reflist_head		 refs;
11145 	struct got_reflist_entry	*re;
11146 	char				*uuidstr = NULL;
11147 	static char			 msg[160];
11148 
11149 	TAILQ_INIT(&refs);
11150 
11151 	err = got_worktree_get_uuid(&uuidstr, worktree);
11152 	if (err)
11153 		goto done;
11154 
11155 	err = got_ref_list(&refs, repo, "refs/got/worktree",
11156 	    got_ref_cmp_by_name, repo);
11157 	if (err)
11158 		goto done;
11159 
11160 	TAILQ_FOREACH(re, &refs, entry) {
11161 		const char *cmd, *refname, *type;
11162 
11163 		refname = got_ref_get_name(re->ref);
11164 
11165 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
11166 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
11167 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
11168 			cmd = "cherrypick";
11169 			type = "cherrypicked";
11170 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
11171 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
11172 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
11173 			cmd = "backout";
11174 			type = "backed-out";
11175 		} else
11176 			continue;
11177 
11178 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) != 0)
11179 			continue;
11180 
11181 		snprintf(msg, sizeof(msg),
11182 		    "work tree has references created by %s commits which "
11183 		    "must be removed with 'got %s -X' before running the %s "
11184 		    "command", type, cmd, caller);
11185 		err = got_error_msg(GOT_ERR_WORKTREE_META, msg);
11186 		goto done;
11187 	}
11188 
11189 done:
11190 	free(uuidstr);
11191 	got_ref_list_free(&refs);
11192 	return err;
11193 }
11194 
11195 static const struct got_error *
11196 process_backup_refs(const char *backup_ref_prefix,
11197     const char *wanted_branch_name,
11198     int delete, struct got_repository *repo)
11199 {
11200 	const struct got_error *err;
11201 	struct got_reflist_head refs, backup_refs;
11202 	struct got_reflist_entry *re;
11203 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
11204 	struct got_object_id *old_commit_id = NULL;
11205 	char *branch_name = NULL;
11206 	struct got_commit_object *old_commit = NULL;
11207 	struct got_reflist_object_id_map *refs_idmap = NULL;
11208 	int wanted_branch_found = 0;
11209 
11210 	TAILQ_INIT(&refs);
11211 	TAILQ_INIT(&backup_refs);
11212 
11213 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
11214 	if (err)
11215 		return err;
11216 
11217 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
11218 	if (err)
11219 		goto done;
11220 
11221 	if (wanted_branch_name) {
11222 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
11223 			wanted_branch_name += 11;
11224 	}
11225 
11226 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
11227 	    got_ref_cmp_by_commit_timestamp_descending, repo);
11228 	if (err)
11229 		goto done;
11230 
11231 	TAILQ_FOREACH(re, &backup_refs, entry) {
11232 		const char *refname = got_ref_get_name(re->ref);
11233 		char *slash;
11234 
11235 		err = check_cancelled(NULL);
11236 		if (err)
11237 			break;
11238 
11239 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
11240 		if (err)
11241 			break;
11242 
11243 		err = got_object_open_as_commit(&old_commit, repo,
11244 		    old_commit_id);
11245 		if (err)
11246 			break;
11247 
11248 		if (strncmp(backup_ref_prefix, refname,
11249 		    backup_ref_prefix_len) == 0)
11250 			refname += backup_ref_prefix_len;
11251 
11252 		while (refname[0] == '/')
11253 			refname++;
11254 
11255 		branch_name = strdup(refname);
11256 		if (branch_name == NULL) {
11257 			err = got_error_from_errno("strdup");
11258 			break;
11259 		}
11260 		slash = strrchr(branch_name, '/');
11261 		if (slash) {
11262 			*slash = '\0';
11263 			refname += strlen(branch_name) + 1;
11264 		}
11265 
11266 		if (wanted_branch_name == NULL ||
11267 		    strcmp(wanted_branch_name, branch_name) == 0) {
11268 			wanted_branch_found = 1;
11269 			if (delete) {
11270 				err = delete_backup_ref(re->ref,
11271 				    old_commit_id, repo);
11272 			} else {
11273 				err = print_backup_ref(branch_name, refname,
11274 				    old_commit_id, old_commit, refs_idmap,
11275 				    repo);
11276 			}
11277 			if (err)
11278 				break;
11279 		}
11280 
11281 		free(old_commit_id);
11282 		old_commit_id = NULL;
11283 		free(branch_name);
11284 		branch_name = NULL;
11285 		got_object_commit_close(old_commit);
11286 		old_commit = NULL;
11287 	}
11288 
11289 	if (wanted_branch_name && !wanted_branch_found) {
11290 		err = got_error_fmt(GOT_ERR_NOT_REF,
11291 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
11292 	}
11293 done:
11294 	if (refs_idmap)
11295 		got_reflist_object_id_map_free(refs_idmap);
11296 	got_ref_list_free(&refs);
11297 	got_ref_list_free(&backup_refs);
11298 	free(old_commit_id);
11299 	free(branch_name);
11300 	if (old_commit)
11301 		got_object_commit_close(old_commit);
11302 	return err;
11303 }
11304 
11305 static const struct got_error *
11306 abort_progress(void *arg, unsigned char status, const char *path)
11307 {
11308 	/*
11309 	 * Unversioned files should not clutter progress output when
11310 	 * an operation is aborted.
11311 	 */
11312 	if (status == GOT_STATUS_UNVERSIONED)
11313 		return NULL;
11314 
11315 	return update_progress(arg, status, path);
11316 }
11317 
11318 static const struct got_error *
11319 find_merge_commit_yca(struct got_object_id **new_yca_id,
11320     struct got_object_id *branch_head_commit_id,
11321     struct got_object_id *yca_id,
11322     struct got_object_id *base_commit_id,
11323     struct got_repository *repo)
11324 {
11325 	const struct got_error *err = NULL;
11326 	struct got_commit_graph *graph = NULL;
11327 	struct got_commit_object *commit = NULL;
11328 
11329 	*new_yca_id = NULL;
11330 
11331 	err = got_commit_graph_open(&graph, "/", 1);
11332 	if (err)
11333 		return err;
11334 
11335 	err = got_commit_graph_bfsort(graph, base_commit_id,
11336 	    repo, check_cancelled, NULL);
11337 	if (err)
11338 		goto done;
11339 
11340 	for (;;) {
11341 		struct got_object_id id;
11342 
11343 		err = got_commit_graph_iter_next(&id, graph, repo,
11344 		    check_cancelled, NULL);
11345 		if (err) {
11346 			if (err->code == GOT_ERR_ITER_COMPLETED)
11347 				err = NULL;
11348 			break;
11349 		}
11350 
11351 		err = got_object_open_as_commit(&commit, repo, &id);
11352 		if (err)
11353 			break;
11354 
11355 		if (got_object_commit_get_nparents(commit) > 1) {
11356 			/* Search for a better YCA using toposort. */
11357 			err = got_commit_graph_find_youngest_common_ancestor(
11358 			    new_yca_id, base_commit_id, branch_head_commit_id,
11359 			    0, 1, repo, check_cancelled, NULL);
11360 			break;
11361 		}
11362 
11363 		if (got_object_id_cmp(&id, yca_id) == 0)
11364 			break;
11365 		got_object_commit_close(commit);
11366 		commit = NULL;
11367 	}
11368 done:
11369 	got_commit_graph_close(graph);
11370 	if (commit)
11371 		got_object_commit_close(commit);
11372 	return err;
11373 }
11374 
11375 static const struct got_error *
11376 cmd_rebase(int argc, char *argv[])
11377 {
11378 	const struct got_error *error = NULL;
11379 	struct got_worktree *worktree = NULL;
11380 	struct got_repository *repo = NULL;
11381 	struct got_fileindex *fileindex = NULL;
11382 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
11383 	struct got_reference *branch = NULL;
11384 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
11385 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
11386 	struct got_object_id *resume_commit_id = NULL;
11387 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
11388 	struct got_object_id *head_commit_id = NULL;
11389 	struct got_reference *head_ref = NULL;
11390 	struct got_commit_object *commit = NULL;
11391 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
11392 	int histedit_in_progress = 0, merge_in_progress = 0;
11393 	int create_backup = 1, list_backups = 0, delete_backups = 0;
11394 	int allow_conflict = 0;
11395 	struct got_object_id_queue commits;
11396 	struct got_pathlist_head merged_paths;
11397 	const struct got_object_id_queue *parent_ids;
11398 	struct got_object_qid *qid, *pid;
11399 	struct got_update_progress_arg upa;
11400 	int *pack_fds = NULL;
11401 
11402 	STAILQ_INIT(&commits);
11403 	TAILQ_INIT(&merged_paths);
11404 	memset(&upa, 0, sizeof(upa));
11405 
11406 #ifndef PROFILE
11407 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11408 	    "unveil", NULL) == -1)
11409 		err(1, "pledge");
11410 #endif
11411 
11412 	while ((ch = getopt(argc, argv, "aCclX")) != -1) {
11413 		switch (ch) {
11414 		case 'a':
11415 			abort_rebase = 1;
11416 			break;
11417 		case 'C':
11418 			allow_conflict = 1;
11419 			break;
11420 		case 'c':
11421 			continue_rebase = 1;
11422 			break;
11423 		case 'l':
11424 			list_backups = 1;
11425 			break;
11426 		case 'X':
11427 			delete_backups = 1;
11428 			break;
11429 		default:
11430 			usage_rebase();
11431 			/* NOTREACHED */
11432 		}
11433 	}
11434 
11435 	argc -= optind;
11436 	argv += optind;
11437 
11438 	if (list_backups) {
11439 		if (abort_rebase)
11440 			option_conflict('l', 'a');
11441 		if (allow_conflict)
11442 			option_conflict('l', 'C');
11443 		if (continue_rebase)
11444 			option_conflict('l', 'c');
11445 		if (delete_backups)
11446 			option_conflict('l', 'X');
11447 		if (argc != 0 && argc != 1)
11448 			usage_rebase();
11449 	} else if (delete_backups) {
11450 		if (abort_rebase)
11451 			option_conflict('X', 'a');
11452 		if (allow_conflict)
11453 			option_conflict('X', 'C');
11454 		if (continue_rebase)
11455 			option_conflict('X', 'c');
11456 		if (list_backups)
11457 			option_conflict('l', 'X');
11458 		if (argc != 0 && argc != 1)
11459 			usage_rebase();
11460 	} else if (allow_conflict) {
11461 		if (abort_rebase)
11462 			option_conflict('C', 'a');
11463 		if (!continue_rebase)
11464 			errx(1, "-C option requires -c");
11465 	} else {
11466 		if (abort_rebase && continue_rebase)
11467 			usage_rebase();
11468 		else if (abort_rebase || continue_rebase) {
11469 			if (argc != 0)
11470 				usage_rebase();
11471 		} else if (argc != 1)
11472 			usage_rebase();
11473 	}
11474 
11475 	cwd = getcwd(NULL, 0);
11476 	if (cwd == NULL) {
11477 		error = got_error_from_errno("getcwd");
11478 		goto done;
11479 	}
11480 
11481 	error = got_repo_pack_fds_open(&pack_fds);
11482 	if (error != NULL)
11483 		goto done;
11484 
11485 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
11486 	if (error) {
11487 		if (list_backups || delete_backups) {
11488 			if (error->code != GOT_ERR_NOT_WORKTREE)
11489 				goto done;
11490 		} else {
11491 			if (error->code == GOT_ERR_NOT_WORKTREE)
11492 				error = wrap_not_worktree_error(error,
11493 				    "rebase", cwd);
11494 			goto done;
11495 		}
11496 	}
11497 
11498 	error = get_gitconfig_path(&gitconfig_path);
11499 	if (error)
11500 		goto done;
11501 	error = got_repo_open(&repo,
11502 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
11503 	    gitconfig_path, pack_fds);
11504 	if (error != NULL)
11505 		goto done;
11506 
11507 	if (worktree != NULL && !list_backups && !delete_backups) {
11508 		error = worktree_has_logmsg_ref("rebase", worktree, repo);
11509 		if (error)
11510 			goto done;
11511 	}
11512 
11513 	error = get_author(&committer, repo, worktree);
11514 	if (error && error->code != GOT_ERR_COMMIT_NO_AUTHOR)
11515 		goto done;
11516 
11517 	error = apply_unveil(got_repo_get_path(repo), 0,
11518 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
11519 	if (error)
11520 		goto done;
11521 
11522 	if (list_backups || delete_backups) {
11523 		error = process_backup_refs(
11524 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
11525 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
11526 		goto done; /* nothing else to do */
11527 	}
11528 
11529 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
11530 	    worktree);
11531 	if (error)
11532 		goto done;
11533 	if (histedit_in_progress) {
11534 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
11535 		goto done;
11536 	}
11537 
11538 	error = got_worktree_merge_in_progress(&merge_in_progress,
11539 	    worktree, repo);
11540 	if (error)
11541 		goto done;
11542 	if (merge_in_progress) {
11543 		error = got_error(GOT_ERR_MERGE_BUSY);
11544 		goto done;
11545 	}
11546 
11547 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
11548 	if (error)
11549 		goto done;
11550 
11551 	if (abort_rebase) {
11552 		if (!rebase_in_progress) {
11553 			error = got_error(GOT_ERR_NOT_REBASING);
11554 			goto done;
11555 		}
11556 		error = got_worktree_rebase_continue(&resume_commit_id,
11557 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11558 		    worktree, repo);
11559 		if (error)
11560 			goto done;
11561 		printf("Switching work tree to %s\n",
11562 		    got_ref_get_symref_target(new_base_branch));
11563 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
11564 		    new_base_branch, abort_progress, &upa);
11565 		if (error)
11566 			goto done;
11567 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
11568 		print_merge_progress_stats(&upa);
11569 		goto done; /* nothing else to do */
11570 	}
11571 
11572 	if (continue_rebase) {
11573 		if (!rebase_in_progress) {
11574 			error = got_error(GOT_ERR_NOT_REBASING);
11575 			goto done;
11576 		}
11577 		error = got_worktree_rebase_continue(&resume_commit_id,
11578 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11579 		    worktree, repo);
11580 		if (error)
11581 			goto done;
11582 
11583 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
11584 		    committer, resume_commit_id, allow_conflict, repo);
11585 		if (error)
11586 			goto done;
11587 
11588 		yca_id = got_object_id_dup(resume_commit_id);
11589 		if (yca_id == NULL) {
11590 			error = got_error_from_errno("got_object_id_dup");
11591 			goto done;
11592 		}
11593 	} else {
11594 		error = got_ref_open(&branch, repo, argv[0], 0);
11595 		if (error != NULL)
11596 			goto done;
11597 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
11598 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
11599 			    "will not rebase a branch which lives outside "
11600 			    "the \"refs/heads/\" reference namespace");
11601 			goto done;
11602 		}
11603 	}
11604 
11605 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
11606 	if (error)
11607 		goto done;
11608 
11609 	if (!continue_rebase) {
11610 		struct got_object_id *base_commit_id;
11611 
11612 		error = got_ref_open(&head_ref, repo,
11613 		    got_worktree_get_head_ref_name(worktree), 0);
11614 		if (error)
11615 			goto done;
11616 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
11617 		if (error)
11618 			goto done;
11619 		base_commit_id = got_worktree_get_base_commit_id(worktree);
11620 		if (got_object_id_cmp(base_commit_id, head_commit_id) != 0) {
11621 			error = got_error(GOT_ERR_REBASE_OUT_OF_DATE);
11622 			goto done;
11623 		}
11624 
11625 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
11626 		    base_commit_id, branch_head_commit_id, 1, 0,
11627 		    repo, check_cancelled, NULL);
11628 		if (error) {
11629 			if (error->code == GOT_ERR_ANCESTRY) {
11630 				error = got_error_msg(GOT_ERR_ANCESTRY,
11631 				    "specified branch shares no common "
11632 				    "ancestry with work tree's branch");
11633 			}
11634 			goto done;
11635 		}
11636 
11637 		/*
11638 		 * If a merge commit appears between the new base branch tip
11639 		 * and a YCA found via first-parent traversal then we might
11640 		 * find a better YCA using topologically sorted commits.
11641 		 */
11642 		if (got_object_id_cmp(base_commit_id, yca_id) != 0) {
11643 			struct got_object_id *better_yca_id;
11644 			error = find_merge_commit_yca(&better_yca_id,
11645 			    branch_head_commit_id, yca_id,
11646 			    base_commit_id, repo);
11647 			if (error)
11648 				goto done;
11649 			if (better_yca_id) {
11650 				free(yca_id);
11651 				yca_id = better_yca_id;
11652 			}
11653 		}
11654 
11655 		if (got_object_id_cmp(base_commit_id, yca_id) == 0) {
11656 			struct got_pathlist_head paths;
11657 			const char *branch_name = got_ref_get_name(branch);
11658 			const char *base =
11659 			    got_worktree_get_head_ref_name(worktree);
11660 
11661 			if (strcmp(branch_name, base) == 0) {
11662 				error = got_error_fmt(GOT_ERR_WRONG_BRANCH,
11663 				    "cannot rebase %s onto itself",
11664 				    branch_name);
11665 				goto done;
11666 			} else {
11667 				printf("%s is already based on %s\n",
11668 				    branch_name, base);
11669 			}
11670 			error = switch_head_ref(branch, branch_head_commit_id,
11671 			    worktree, repo);
11672 			if (error)
11673 				goto done;
11674 			error = got_worktree_set_base_commit_id(worktree, repo,
11675 			    branch_head_commit_id);
11676 			if (error)
11677 				goto done;
11678 			TAILQ_INIT(&paths);
11679 			error = got_pathlist_append(&paths, "", NULL);
11680 			if (error)
11681 				goto done;
11682 			error = got_worktree_checkout_files(worktree,
11683 			    &paths, repo, update_progress, &upa,
11684 			    check_cancelled, NULL);
11685 			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
11686 			if (error)
11687 				goto done;
11688 			if (upa.did_something) {
11689 				char *id_str;
11690 				error = got_object_id_str(&id_str,
11691 				    branch_head_commit_id);
11692 				if (error)
11693 					goto done;
11694 				printf("Updated to %s: %s\n",
11695 				    got_worktree_get_head_ref_name(worktree),
11696 				    id_str);
11697 				free(id_str);
11698 			} else
11699 				printf("Already up-to-date\n");
11700 			print_update_progress_stats(&upa);
11701 			goto done;
11702 		}
11703 	}
11704 
11705 	commit_id = branch_head_commit_id;
11706 	error = got_object_open_as_commit(&commit, repo, commit_id);
11707 	if (error)
11708 		goto done;
11709 
11710 	parent_ids = got_object_commit_get_parent_ids(commit);
11711 	pid = STAILQ_FIRST(parent_ids);
11712 	if (pid) {
11713 		error = collect_commits(&commits, commit_id, &pid->id,
11714 		    yca_id, got_worktree_get_path_prefix(worktree),
11715 		    GOT_ERR_REBASE_PATH, repo);
11716 		if (error)
11717 			goto done;
11718 	}
11719 
11720 	got_object_commit_close(commit);
11721 	commit = NULL;
11722 
11723 	if (!continue_rebase) {
11724 		error = got_worktree_rebase_prepare(&new_base_branch,
11725 		    &tmp_branch, &fileindex, worktree, branch, repo);
11726 		if (error)
11727 			goto done;
11728 	}
11729 
11730 	if (STAILQ_EMPTY(&commits)) {
11731 		if (continue_rebase) {
11732 			error = rebase_complete(worktree, fileindex,
11733 			    branch, tmp_branch, repo, create_backup);
11734 			goto done;
11735 		} else {
11736 			/* Fast-forward the reference of the branch. */
11737 			struct got_object_id *new_head_commit_id;
11738 			char *id_str;
11739 			error = got_ref_resolve(&new_head_commit_id, repo,
11740 			    new_base_branch);
11741 			if (error)
11742 				goto done;
11743 			error = got_object_id_str(&id_str, new_head_commit_id);
11744 			if (error)
11745 				goto done;
11746 			printf("Forwarding %s to commit %s\n",
11747 			    got_ref_get_name(branch), id_str);
11748 			free(id_str);
11749 			error = got_ref_change_ref(branch,
11750 			    new_head_commit_id);
11751 			if (error)
11752 				goto done;
11753 			/* No backup needed since objects did not change. */
11754 			create_backup = 0;
11755 		}
11756 	}
11757 
11758 	pid = NULL;
11759 	STAILQ_FOREACH(qid, &commits, entry) {
11760 
11761 		commit_id = &qid->id;
11762 		parent_id = pid ? &pid->id : yca_id;
11763 		pid = qid;
11764 
11765 		memset(&upa, 0, sizeof(upa));
11766 		error = got_worktree_rebase_merge_files(&merged_paths,
11767 		    worktree, fileindex, parent_id, commit_id, repo,
11768 		    update_progress, &upa, check_cancelled, NULL);
11769 		if (error)
11770 			goto done;
11771 
11772 		print_merge_progress_stats(&upa);
11773 		if (upa.conflicts > 0 || upa.missing > 0 ||
11774 		    upa.not_deleted > 0 || upa.unversioned > 0) {
11775 			if (upa.conflicts > 0) {
11776 				error = show_rebase_merge_conflict(&qid->id,
11777 				    repo);
11778 				if (error)
11779 					goto done;
11780 			}
11781 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11782 			break;
11783 		}
11784 
11785 		error = rebase_commit(&merged_paths, worktree, fileindex,
11786 		    tmp_branch, committer, commit_id, 0, repo);
11787 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11788 		if (error)
11789 			goto done;
11790 	}
11791 
11792 	if (upa.conflicts > 0 || upa.missing > 0 ||
11793 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11794 		error = got_worktree_rebase_postpone(worktree, fileindex);
11795 		if (error)
11796 			goto done;
11797 		if (upa.conflicts > 0 && upa.missing == 0 &&
11798 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11799 			error = got_error_msg(GOT_ERR_CONFLICTS,
11800 			    "conflicts must be resolved before rebasing "
11801 			    "can continue");
11802 		} else if (upa.conflicts > 0) {
11803 			error = got_error_msg(GOT_ERR_CONFLICTS,
11804 			    "conflicts must be resolved before rebasing "
11805 			    "can continue; changes destined for some "
11806 			    "files were not yet merged and should be "
11807 			    "merged manually if required before the "
11808 			    "rebase operation is continued");
11809 		} else {
11810 			error = got_error_msg(GOT_ERR_CONFLICTS,
11811 			    "changes destined for some files were not "
11812 			    "yet merged and should be merged manually "
11813 			    "if required before the rebase operation "
11814 			    "is continued");
11815 		}
11816 	} else
11817 		error = rebase_complete(worktree, fileindex, branch,
11818 		    tmp_branch, repo, create_backup);
11819 done:
11820 	free(cwd);
11821 	free(committer);
11822 	free(gitconfig_path);
11823 	got_object_id_queue_free(&commits);
11824 	free(branch_head_commit_id);
11825 	free(resume_commit_id);
11826 	free(head_commit_id);
11827 	free(yca_id);
11828 	if (commit)
11829 		got_object_commit_close(commit);
11830 	if (branch)
11831 		got_ref_close(branch);
11832 	if (new_base_branch)
11833 		got_ref_close(new_base_branch);
11834 	if (tmp_branch)
11835 		got_ref_close(tmp_branch);
11836 	if (head_ref)
11837 		got_ref_close(head_ref);
11838 	if (worktree)
11839 		got_worktree_close(worktree);
11840 	if (repo) {
11841 		const struct got_error *close_err = got_repo_close(repo);
11842 		if (error == NULL)
11843 			error = close_err;
11844 	}
11845 	if (pack_fds) {
11846 		const struct got_error *pack_err =
11847 		    got_repo_pack_fds_close(pack_fds);
11848 		if (error == NULL)
11849 			error = pack_err;
11850 	}
11851 	return error;
11852 }
11853 
11854 __dead static void
11855 usage_histedit(void)
11856 {
11857 	fprintf(stderr, "usage: %s histedit [-aCcdeflmX] [-F histedit-script] "
11858 	    "[branch]\n", getprogname());
11859 	exit(1);
11860 }
11861 
11862 #define GOT_HISTEDIT_PICK 'p'
11863 #define GOT_HISTEDIT_EDIT 'e'
11864 #define GOT_HISTEDIT_FOLD 'f'
11865 #define GOT_HISTEDIT_DROP 'd'
11866 #define GOT_HISTEDIT_MESG 'm'
11867 
11868 static const struct got_histedit_cmd {
11869 	unsigned char code;
11870 	const char *name;
11871 	const char *desc;
11872 } got_histedit_cmds[] = {
11873 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
11874 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
11875 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
11876 	    "be used" },
11877 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
11878 	{ GOT_HISTEDIT_MESG, "mesg", "open editor to edit the log message" },
11879 };
11880 
11881 struct got_histedit_list_entry {
11882 	TAILQ_ENTRY(got_histedit_list_entry) entry;
11883 	struct got_object_id *commit_id;
11884 	const struct got_histedit_cmd *cmd;
11885 	char *logmsg;
11886 };
11887 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
11888 
11889 static const struct got_error *
11890 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
11891     FILE *f, struct got_repository *repo)
11892 {
11893 	const struct got_error *err = NULL;
11894 	char *logmsg = NULL, *id_str = NULL;
11895 	struct got_commit_object *commit = NULL;
11896 	int n;
11897 
11898 	err = got_object_open_as_commit(&commit, repo, commit_id);
11899 	if (err)
11900 		goto done;
11901 
11902 	err = get_short_logmsg(&logmsg, 34, commit);
11903 	if (err)
11904 		goto done;
11905 
11906 	err = got_object_id_str(&id_str, commit_id);
11907 	if (err)
11908 		goto done;
11909 
11910 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
11911 	if (n < 0)
11912 		err = got_ferror(f, GOT_ERR_IO);
11913 done:
11914 	if (commit)
11915 		got_object_commit_close(commit);
11916 	free(id_str);
11917 	free(logmsg);
11918 	return err;
11919 }
11920 
11921 static const struct got_error *
11922 histedit_write_commit_list(struct got_object_id_queue *commits,
11923     FILE *f, int edit_logmsg_only, int fold_only, int drop_only,
11924     int edit_only, struct got_repository *repo)
11925 {
11926 	const struct got_error *err = NULL;
11927 	struct got_object_qid *qid;
11928 	const char *histedit_cmd = NULL;
11929 
11930 	if (STAILQ_EMPTY(commits))
11931 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
11932 
11933 	STAILQ_FOREACH(qid, commits, entry) {
11934 		histedit_cmd = got_histedit_cmds[0].name;
11935 		if (drop_only)
11936 			histedit_cmd = "drop";
11937 		else if (edit_only)
11938 			histedit_cmd = "edit";
11939 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
11940 			histedit_cmd = "fold";
11941 		else if (edit_logmsg_only)
11942 			histedit_cmd = "mesg";
11943 		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
11944 		if (err)
11945 			break;
11946 	}
11947 
11948 	return err;
11949 }
11950 
11951 static const struct got_error *
11952 write_cmd_list(FILE *f, const char *branch_name,
11953     struct got_object_id_queue *commits)
11954 {
11955 	const struct got_error *err = NULL;
11956 	size_t i;
11957 	int n;
11958 	char *id_str;
11959 	struct got_object_qid *qid;
11960 
11961 	qid = STAILQ_FIRST(commits);
11962 	err = got_object_id_str(&id_str, &qid->id);
11963 	if (err)
11964 		return err;
11965 
11966 	n = fprintf(f,
11967 	    "# Editing the history of branch '%s' starting at\n"
11968 	    "# commit %s\n"
11969 	    "# Commits will be processed in order from top to "
11970 	    "bottom of this file.\n", branch_name, id_str);
11971 	if (n < 0) {
11972 		err = got_ferror(f, GOT_ERR_IO);
11973 		goto done;
11974 	}
11975 
11976 	n = fprintf(f, "# Available histedit commands:\n");
11977 	if (n < 0) {
11978 		err = got_ferror(f, GOT_ERR_IO);
11979 		goto done;
11980 	}
11981 
11982 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
11983 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
11984 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
11985 		    cmd->desc);
11986 		if (n < 0) {
11987 			err = got_ferror(f, GOT_ERR_IO);
11988 			break;
11989 		}
11990 	}
11991 done:
11992 	free(id_str);
11993 	return err;
11994 }
11995 
11996 static const struct got_error *
11997 histedit_syntax_error(int lineno)
11998 {
11999 	static char msg[42];
12000 	int ret;
12001 
12002 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
12003 	    lineno);
12004 	if (ret < 0 || (size_t)ret >= sizeof(msg))
12005 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
12006 
12007 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
12008 }
12009 
12010 static const struct got_error *
12011 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
12012     char *logmsg, struct got_repository *repo)
12013 {
12014 	const struct got_error *err;
12015 	struct got_commit_object *folded_commit = NULL;
12016 	char *id_str, *folded_logmsg = NULL;
12017 
12018 	err = got_object_id_str(&id_str, hle->commit_id);
12019 	if (err)
12020 		return err;
12021 
12022 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
12023 	if (err)
12024 		goto done;
12025 
12026 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
12027 	if (err)
12028 		goto done;
12029 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
12030 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
12031 	    folded_logmsg) == -1) {
12032 		err = got_error_from_errno("asprintf");
12033 	}
12034 done:
12035 	if (folded_commit)
12036 		got_object_commit_close(folded_commit);
12037 	free(id_str);
12038 	free(folded_logmsg);
12039 	return err;
12040 }
12041 
12042 static struct got_histedit_list_entry *
12043 get_folded_commits(struct got_histedit_list_entry *hle)
12044 {
12045 	struct got_histedit_list_entry *prev, *folded = NULL;
12046 
12047 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
12048 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
12049 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
12050 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
12051 			folded = prev;
12052 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
12053 	}
12054 
12055 	return folded;
12056 }
12057 
12058 static const struct got_error *
12059 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
12060     const char *editor, struct got_repository *repo)
12061 {
12062 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
12063 	char *logmsg = NULL, *new_msg = NULL;
12064 	const struct got_error *err = NULL;
12065 	struct got_commit_object *commit = NULL;
12066 	int logmsg_len;
12067 	int fd = -1;
12068 	struct got_histedit_list_entry *folded = NULL;
12069 
12070 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
12071 	if (err)
12072 		return err;
12073 
12074 	folded = get_folded_commits(hle);
12075 	if (folded) {
12076 		while (folded != hle) {
12077 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
12078 				folded = TAILQ_NEXT(folded, entry);
12079 				continue;
12080 			}
12081 			err = append_folded_commit_msg(&new_msg, folded,
12082 			    logmsg, repo);
12083 			if (err)
12084 				goto done;
12085 			free(logmsg);
12086 			logmsg = new_msg;
12087 			folded = TAILQ_NEXT(folded, entry);
12088 		}
12089 	}
12090 
12091 	err = got_object_id_str(&id_str, hle->commit_id);
12092 	if (err)
12093 		goto done;
12094 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
12095 	if (err)
12096 		goto done;
12097 	logmsg_len = asprintf(&new_msg,
12098 	    "%s\n# original log message of commit %s: %s",
12099 	    logmsg ? logmsg : "", id_str, orig_logmsg);
12100 	if (logmsg_len == -1) {
12101 		err = got_error_from_errno("asprintf");
12102 		goto done;
12103 	}
12104 	free(logmsg);
12105 	logmsg = new_msg;
12106 
12107 	err = got_object_id_str(&id_str, hle->commit_id);
12108 	if (err)
12109 		goto done;
12110 
12111 	err = got_opentemp_named_fd(&logmsg_path, &fd,
12112 	    GOT_TMPDIR_STR "/got-logmsg", "");
12113 	if (err)
12114 		goto done;
12115 
12116 	if (write(fd, logmsg, logmsg_len) == -1) {
12117 		err = got_error_from_errno2("write", logmsg_path);
12118 		goto done;
12119 	}
12120 	if (close(fd) == -1) {
12121 		err = got_error_from_errno2("close", logmsg_path);
12122 		goto done;
12123 	}
12124 	fd = -1;
12125 
12126 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
12127 	    logmsg_len, 0);
12128 	if (err) {
12129 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
12130 			goto done;
12131 		err = NULL;
12132 		hle->logmsg = strdup(new_msg);
12133 		if (hle->logmsg == NULL)
12134 			err = got_error_from_errno("strdup");
12135 	}
12136 done:
12137 	if (fd != -1 && close(fd) == -1 && err == NULL)
12138 		err = got_error_from_errno2("close", logmsg_path);
12139 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
12140 		err = got_error_from_errno2("unlink", logmsg_path);
12141 	free(logmsg_path);
12142 	free(logmsg);
12143 	free(orig_logmsg);
12144 	if (commit)
12145 		got_object_commit_close(commit);
12146 	return err;
12147 }
12148 
12149 static const struct got_error *
12150 histedit_parse_list(struct got_histedit_list *histedit_cmds,
12151     FILE *f, struct got_repository *repo)
12152 {
12153 	const struct got_error *err = NULL;
12154 	char *line = NULL, *p, *end;
12155 	size_t i, linesize = 0;
12156 	ssize_t linelen;
12157 	int lineno = 0;
12158 	const struct got_histedit_cmd *cmd;
12159 	struct got_object_id *commit_id = NULL;
12160 	struct got_histedit_list_entry *hle = NULL;
12161 
12162 	for (;;) {
12163 		linelen = getline(&line, &linesize, f);
12164 		if (linelen == -1) {
12165 			const struct got_error *getline_err;
12166 			if (feof(f))
12167 				break;
12168 			getline_err = got_error_from_errno("getline");
12169 			err = got_ferror(f, getline_err->code);
12170 			break;
12171 		}
12172 		lineno++;
12173 		p = line;
12174 		while (isspace((unsigned char)p[0]))
12175 			p++;
12176 		if (p[0] == '#' || p[0] == '\0')
12177 			continue;
12178 		cmd = NULL;
12179 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
12180 			cmd = &got_histedit_cmds[i];
12181 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
12182 			    isspace((unsigned char)p[strlen(cmd->name)])) {
12183 				p += strlen(cmd->name);
12184 				break;
12185 			}
12186 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
12187 				p++;
12188 				break;
12189 			}
12190 		}
12191 		if (i == nitems(got_histedit_cmds)) {
12192 			err = histedit_syntax_error(lineno);
12193 			break;
12194 		}
12195 		while (isspace((unsigned char)p[0]))
12196 			p++;
12197 		end = p;
12198 		while (end[0] && !isspace((unsigned char)end[0]))
12199 			end++;
12200 		*end = '\0';
12201 		err = got_object_resolve_id_str(&commit_id, repo, p);
12202 		if (err) {
12203 			/* override error code */
12204 			err = histedit_syntax_error(lineno);
12205 			break;
12206 		}
12207 		hle = malloc(sizeof(*hle));
12208 		if (hle == NULL) {
12209 			err = got_error_from_errno("malloc");
12210 			break;
12211 		}
12212 		hle->cmd = cmd;
12213 		hle->commit_id = commit_id;
12214 		hle->logmsg = NULL;
12215 		commit_id = NULL;
12216 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
12217 	}
12218 
12219 	free(line);
12220 	free(commit_id);
12221 	return err;
12222 }
12223 
12224 static const struct got_error *
12225 histedit_check_script(struct got_histedit_list *histedit_cmds,
12226     struct got_object_id_queue *commits, struct got_repository *repo)
12227 {
12228 	const struct got_error *err = NULL;
12229 	struct got_object_qid *qid;
12230 	struct got_histedit_list_entry *hle;
12231 	static char msg[92];
12232 	char *id_str;
12233 
12234 	if (TAILQ_EMPTY(histedit_cmds))
12235 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
12236 		    "histedit script contains no commands");
12237 	if (STAILQ_EMPTY(commits))
12238 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
12239 
12240 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
12241 		struct got_histedit_list_entry *hle2;
12242 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
12243 			if (hle == hle2)
12244 				continue;
12245 			if (got_object_id_cmp(hle->commit_id,
12246 			    hle2->commit_id) != 0)
12247 				continue;
12248 			err = got_object_id_str(&id_str, hle->commit_id);
12249 			if (err)
12250 				return err;
12251 			snprintf(msg, sizeof(msg), "commit %s is listed "
12252 			    "more than once in histedit script", id_str);
12253 			free(id_str);
12254 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
12255 		}
12256 	}
12257 
12258 	STAILQ_FOREACH(qid, commits, entry) {
12259 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
12260 			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
12261 				break;
12262 		}
12263 		if (hle == NULL) {
12264 			err = got_object_id_str(&id_str, &qid->id);
12265 			if (err)
12266 				return err;
12267 			snprintf(msg, sizeof(msg),
12268 			    "commit %s missing from histedit script", id_str);
12269 			free(id_str);
12270 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
12271 		}
12272 	}
12273 
12274 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
12275 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
12276 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
12277 		    "last commit in histedit script cannot be folded");
12278 
12279 	return NULL;
12280 }
12281 
12282 static const struct got_error *
12283 histedit_run_editor(struct got_histedit_list *histedit_cmds,
12284     const char *editor, const char *path,
12285     struct got_object_id_queue *commits, struct got_repository *repo)
12286 {
12287 	const struct got_error *err = NULL;
12288 	struct stat st, st2;
12289 	struct timespec timeout;
12290 	FILE *f = NULL;
12291 
12292 	if (stat(path, &st) == -1) {
12293 		err = got_error_from_errno2("stat", path);
12294 		goto done;
12295 	}
12296 
12297 	if (spawn_editor(editor, path) == -1) {
12298 		err = got_error_from_errno("failed spawning editor");
12299 		goto done;
12300 	}
12301 
12302 	timeout.tv_sec = 0;
12303 	timeout.tv_nsec = 1;
12304 	nanosleep(&timeout,  NULL);
12305 
12306 	if (stat(path, &st2) == -1) {
12307 		err = got_error_from_errno2("stat", path);
12308 		goto done;
12309 	}
12310 
12311 	if (st.st_size == st2.st_size &&
12312 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==)) {
12313 		err = got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
12314                     "no changes made to histedit script, aborting");
12315 		goto done;
12316 	}
12317 
12318 	f = fopen(path, "re");
12319 	if (f == NULL) {
12320 		err = got_error_from_errno("fopen");
12321 		goto done;
12322 	}
12323 	err = histedit_parse_list(histedit_cmds, f, repo);
12324 	if (err)
12325 		goto done;
12326 
12327 	err = histedit_check_script(histedit_cmds, commits, repo);
12328 done:
12329 	if (f && fclose(f) == EOF && err == NULL)
12330 		err = got_error_from_errno("fclose");
12331 	return err;
12332 }
12333 
12334 static const struct got_error *
12335 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
12336     struct got_object_id_queue *, const char *, const char *, const char *,
12337     struct got_repository *);
12338 
12339 static const struct got_error *
12340 histedit_edit_script(struct got_histedit_list *histedit_cmds,
12341     struct got_object_id_queue *commits, const char *branch_name,
12342     int edit_logmsg_only, int fold_only, int drop_only, int edit_only,
12343     const char *editor, struct got_repository *repo)
12344 {
12345 	const struct got_error *err;
12346 	FILE *f = NULL;
12347 	char *path = NULL;
12348 
12349 	err = got_opentemp_named(&path, &f, "got-histedit", "");
12350 	if (err)
12351 		return err;
12352 
12353 	err = write_cmd_list(f, branch_name, commits);
12354 	if (err)
12355 		goto done;
12356 
12357 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
12358 	    fold_only, drop_only, edit_only, repo);
12359 	if (err)
12360 		goto done;
12361 
12362 	if (drop_only || edit_logmsg_only || fold_only || edit_only) {
12363 		rewind(f);
12364 		err = histedit_parse_list(histedit_cmds, f, repo);
12365 	} else {
12366 		if (fclose(f) == EOF) {
12367 			err = got_error_from_errno("fclose");
12368 			goto done;
12369 		}
12370 		f = NULL;
12371 		err = histedit_run_editor(histedit_cmds, editor, path,
12372 		    commits, repo);
12373 		if (err) {
12374 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12375 			    err->code != GOT_ERR_HISTEDIT_CMD)
12376 				goto done;
12377 			err = histedit_edit_list_retry(histedit_cmds, err,
12378 			    commits, editor, path, branch_name, repo);
12379 		}
12380 	}
12381 done:
12382 	if (f && fclose(f) == EOF && err == NULL)
12383 		err = got_error_from_errno("fclose");
12384 	if (path && unlink(path) != 0 && err == NULL)
12385 		err = got_error_from_errno2("unlink", path);
12386 	free(path);
12387 	return err;
12388 }
12389 
12390 static const struct got_error *
12391 histedit_save_list(struct got_histedit_list *histedit_cmds,
12392     struct got_worktree *worktree, struct got_repository *repo)
12393 {
12394 	const struct got_error *err = NULL;
12395 	char *path = NULL;
12396 	FILE *f = NULL;
12397 	struct got_histedit_list_entry *hle;
12398 
12399 	err = got_worktree_get_histedit_script_path(&path, worktree);
12400 	if (err)
12401 		return err;
12402 
12403 	f = fopen(path, "we");
12404 	if (f == NULL) {
12405 		err = got_error_from_errno2("fopen", path);
12406 		goto done;
12407 	}
12408 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
12409 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
12410 		    repo);
12411 		if (err)
12412 			break;
12413 	}
12414 done:
12415 	if (f && fclose(f) == EOF && err == NULL)
12416 		err = got_error_from_errno("fclose");
12417 	free(path);
12418 	return err;
12419 }
12420 
12421 static void
12422 histedit_free_list(struct got_histedit_list *histedit_cmds)
12423 {
12424 	struct got_histedit_list_entry *hle;
12425 
12426 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
12427 		TAILQ_REMOVE(histedit_cmds, hle, entry);
12428 		free(hle);
12429 	}
12430 }
12431 
12432 static const struct got_error *
12433 histedit_load_list(struct got_histedit_list *histedit_cmds,
12434     const char *path, struct got_repository *repo)
12435 {
12436 	const struct got_error *err = NULL;
12437 	FILE *f = NULL;
12438 
12439 	f = fopen(path, "re");
12440 	if (f == NULL) {
12441 		err = got_error_from_errno2("fopen", path);
12442 		goto done;
12443 	}
12444 
12445 	err = histedit_parse_list(histedit_cmds, f, repo);
12446 done:
12447 	if (f && fclose(f) == EOF && err == NULL)
12448 		err = got_error_from_errno("fclose");
12449 	return err;
12450 }
12451 
12452 static const struct got_error *
12453 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
12454     const struct got_error *edit_err, struct got_object_id_queue *commits,
12455     const char *editor, const char *path, const char *branch_name,
12456     struct got_repository *repo)
12457 {
12458 	const struct got_error *err = NULL, *prev_err = edit_err;
12459 	int resp = ' ';
12460 
12461 	while (resp != 'c' && resp != 'r' && resp != 'a') {
12462 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
12463 		    "or (a)bort: ", getprogname(), prev_err->msg);
12464 		resp = getchar();
12465 		if (resp == '\n')
12466 			resp = getchar();
12467 		if (resp == 'c') {
12468 			histedit_free_list(histedit_cmds);
12469 			err = histedit_run_editor(histedit_cmds, editor, path,
12470 			    commits, repo);
12471 			if (err) {
12472 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12473 				    err->code != GOT_ERR_HISTEDIT_CMD)
12474 					break;
12475 				prev_err = err;
12476 				resp = ' ';
12477 				continue;
12478 			}
12479 			break;
12480 		} else if (resp == 'r') {
12481 			histedit_free_list(histedit_cmds);
12482 			err = histedit_edit_script(histedit_cmds,
12483 			    commits, branch_name, 0, 0, 0, 0, editor, repo);
12484 			if (err) {
12485 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12486 				    err->code != GOT_ERR_HISTEDIT_CMD)
12487 					break;
12488 				prev_err = err;
12489 				resp = ' ';
12490 				continue;
12491 			}
12492 			break;
12493 		} else if (resp == 'a') {
12494 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
12495 			break;
12496 		} else
12497 			printf("invalid response '%c'\n", resp);
12498 	}
12499 
12500 	return err;
12501 }
12502 
12503 static const struct got_error *
12504 histedit_complete(struct got_worktree *worktree,
12505     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
12506     struct got_reference *branch, struct got_repository *repo)
12507 {
12508 	printf("Switching work tree to %s\n",
12509 	    got_ref_get_symref_target(branch));
12510 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
12511 	    branch, repo);
12512 }
12513 
12514 static const struct got_error *
12515 show_histedit_progress(struct got_commit_object *commit,
12516     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
12517 {
12518 	const struct got_error *err;
12519 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
12520 
12521 	err = got_object_id_str(&old_id_str, hle->commit_id);
12522 	if (err)
12523 		goto done;
12524 
12525 	if (new_id) {
12526 		err = got_object_id_str(&new_id_str, new_id);
12527 		if (err)
12528 			goto done;
12529 	}
12530 
12531 	old_id_str[12] = '\0';
12532 	if (new_id_str)
12533 		new_id_str[12] = '\0';
12534 
12535 	if (hle->logmsg) {
12536 		logmsg = strdup(hle->logmsg);
12537 		if (logmsg == NULL) {
12538 			err = got_error_from_errno("strdup");
12539 			goto done;
12540 		}
12541 		trim_logmsg(logmsg, 42);
12542 	} else {
12543 		err = get_short_logmsg(&logmsg, 42, commit);
12544 		if (err)
12545 			goto done;
12546 	}
12547 
12548 	switch (hle->cmd->code) {
12549 	case GOT_HISTEDIT_PICK:
12550 	case GOT_HISTEDIT_EDIT:
12551 	case GOT_HISTEDIT_MESG:
12552 		printf("%s -> %s: %s\n", old_id_str,
12553 		    new_id_str ? new_id_str : "no-op change", logmsg);
12554 		break;
12555 	case GOT_HISTEDIT_DROP:
12556 	case GOT_HISTEDIT_FOLD:
12557 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
12558 		    logmsg);
12559 		break;
12560 	default:
12561 		break;
12562 	}
12563 done:
12564 	free(old_id_str);
12565 	free(new_id_str);
12566 	return err;
12567 }
12568 
12569 static const struct got_error *
12570 histedit_commit(struct got_pathlist_head *merged_paths,
12571     struct got_worktree *worktree, struct got_fileindex *fileindex,
12572     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
12573     const char *committer, int allow_conflict, const char *editor,
12574     struct got_repository *repo)
12575 {
12576 	const struct got_error *err;
12577 	struct got_commit_object *commit;
12578 	struct got_object_id *new_commit_id;
12579 
12580 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
12581 	    && hle->logmsg == NULL) {
12582 		err = histedit_edit_logmsg(hle, editor, repo);
12583 		if (err)
12584 			return err;
12585 	}
12586 
12587 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
12588 	if (err)
12589 		return err;
12590 
12591 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
12592 	    worktree, fileindex, tmp_branch, committer, commit, hle->commit_id,
12593 	    hle->logmsg, allow_conflict, repo);
12594 	if (err) {
12595 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
12596 			goto done;
12597 		err = show_histedit_progress(commit, hle, NULL);
12598 	} else {
12599 		err = show_histedit_progress(commit, hle, new_commit_id);
12600 		free(new_commit_id);
12601 	}
12602 done:
12603 	got_object_commit_close(commit);
12604 	return err;
12605 }
12606 
12607 static const struct got_error *
12608 histedit_skip_commit(struct got_histedit_list_entry *hle,
12609     struct got_worktree *worktree, struct got_repository *repo)
12610 {
12611 	const struct got_error *error;
12612 	struct got_commit_object *commit;
12613 
12614 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
12615 	    repo);
12616 	if (error)
12617 		return error;
12618 
12619 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
12620 	if (error)
12621 		return error;
12622 
12623 	error = show_histedit_progress(commit, hle, NULL);
12624 	got_object_commit_close(commit);
12625 	return error;
12626 }
12627 
12628 static const struct got_error *
12629 check_local_changes(void *arg, unsigned char status,
12630     unsigned char staged_status, const char *path,
12631     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
12632     struct got_object_id *commit_id, int dirfd, const char *de_name)
12633 {
12634 	int *have_local_changes = arg;
12635 
12636 	switch (status) {
12637 	case GOT_STATUS_ADD:
12638 	case GOT_STATUS_DELETE:
12639 	case GOT_STATUS_MODIFY:
12640 	case GOT_STATUS_CONFLICT:
12641 		*have_local_changes = 1;
12642 		return got_error(GOT_ERR_CANCELLED);
12643 	default:
12644 		break;
12645 	}
12646 
12647 	switch (staged_status) {
12648 	case GOT_STATUS_ADD:
12649 	case GOT_STATUS_DELETE:
12650 	case GOT_STATUS_MODIFY:
12651 		*have_local_changes = 1;
12652 		return got_error(GOT_ERR_CANCELLED);
12653 	default:
12654 		break;
12655 	}
12656 
12657 	return NULL;
12658 }
12659 
12660 static const struct got_error *
12661 cmd_histedit(int argc, char *argv[])
12662 {
12663 	const struct got_error *error = NULL;
12664 	struct got_worktree *worktree = NULL;
12665 	struct got_fileindex *fileindex = NULL;
12666 	struct got_repository *repo = NULL;
12667 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
12668 	struct got_reference *branch = NULL;
12669 	struct got_reference *tmp_branch = NULL;
12670 	struct got_object_id *resume_commit_id = NULL;
12671 	struct got_object_id *base_commit_id = NULL;
12672 	struct got_object_id *head_commit_id = NULL;
12673 	struct got_commit_object *commit = NULL;
12674 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
12675 	struct got_update_progress_arg upa;
12676 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
12677 	int drop_only = 0, edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
12678 	int allow_conflict = 0, list_backups = 0, delete_backups = 0;
12679 	const char *edit_script_path = NULL;
12680 	char *editor = NULL;
12681 	struct got_object_id_queue commits;
12682 	struct got_pathlist_head merged_paths;
12683 	const struct got_object_id_queue *parent_ids;
12684 	struct got_object_qid *pid;
12685 	struct got_histedit_list histedit_cmds;
12686 	struct got_histedit_list_entry *hle;
12687 	int *pack_fds = NULL;
12688 
12689 	STAILQ_INIT(&commits);
12690 	TAILQ_INIT(&histedit_cmds);
12691 	TAILQ_INIT(&merged_paths);
12692 	memset(&upa, 0, sizeof(upa));
12693 
12694 #ifndef PROFILE
12695 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12696 	    "unveil", NULL) == -1)
12697 		err(1, "pledge");
12698 #endif
12699 
12700 	while ((ch = getopt(argc, argv, "aCcdeF:flmX")) != -1) {
12701 		switch (ch) {
12702 		case 'a':
12703 			abort_edit = 1;
12704 			break;
12705 		case 'C':
12706 			allow_conflict = 1;
12707 			break;
12708 		case 'c':
12709 			continue_edit = 1;
12710 			break;
12711 		case 'd':
12712 			drop_only = 1;
12713 			break;
12714 		case 'e':
12715 			edit_only = 1;
12716 			break;
12717 		case 'F':
12718 			edit_script_path = optarg;
12719 			break;
12720 		case 'f':
12721 			fold_only = 1;
12722 			break;
12723 		case 'l':
12724 			list_backups = 1;
12725 			break;
12726 		case 'm':
12727 			edit_logmsg_only = 1;
12728 			break;
12729 		case 'X':
12730 			delete_backups = 1;
12731 			break;
12732 		default:
12733 			usage_histedit();
12734 			/* NOTREACHED */
12735 		}
12736 	}
12737 
12738 	argc -= optind;
12739 	argv += optind;
12740 
12741 	if (abort_edit && allow_conflict)
12742 		option_conflict('a', 'C');
12743 	if (abort_edit && continue_edit)
12744 		option_conflict('a', 'c');
12745 	if (edit_script_path && allow_conflict)
12746 		option_conflict('F', 'C');
12747 	if (edit_script_path && edit_logmsg_only)
12748 		option_conflict('F', 'm');
12749 	if (abort_edit && edit_logmsg_only)
12750 		option_conflict('a', 'm');
12751 	if (edit_logmsg_only && allow_conflict)
12752 		option_conflict('m', 'C');
12753 	if (continue_edit && edit_logmsg_only)
12754 		option_conflict('c', 'm');
12755 	if (abort_edit && fold_only)
12756 		option_conflict('a', 'f');
12757 	if (fold_only && allow_conflict)
12758 		option_conflict('f', 'C');
12759 	if (continue_edit && fold_only)
12760 		option_conflict('c', 'f');
12761 	if (fold_only && edit_logmsg_only)
12762 		option_conflict('f', 'm');
12763 	if (edit_script_path && fold_only)
12764 		option_conflict('F', 'f');
12765 	if (abort_edit && edit_only)
12766 		option_conflict('a', 'e');
12767 	if (continue_edit && edit_only)
12768 		option_conflict('c', 'e');
12769 	if (edit_only && edit_logmsg_only)
12770 		option_conflict('e', 'm');
12771 	if (edit_script_path && edit_only)
12772 		option_conflict('F', 'e');
12773 	if (fold_only && edit_only)
12774 		option_conflict('f', 'e');
12775 	if (drop_only && abort_edit)
12776 		option_conflict('d', 'a');
12777 	if (drop_only && allow_conflict)
12778 		option_conflict('d', 'C');
12779 	if (drop_only && continue_edit)
12780 		option_conflict('d', 'c');
12781 	if (drop_only && edit_logmsg_only)
12782 		option_conflict('d', 'm');
12783 	if (drop_only && edit_only)
12784 		option_conflict('d', 'e');
12785 	if (drop_only && edit_script_path)
12786 		option_conflict('d', 'F');
12787 	if (drop_only && fold_only)
12788 		option_conflict('d', 'f');
12789 	if (list_backups) {
12790 		if (abort_edit)
12791 			option_conflict('l', 'a');
12792 		if (allow_conflict)
12793 			option_conflict('l', 'C');
12794 		if (continue_edit)
12795 			option_conflict('l', 'c');
12796 		if (edit_script_path)
12797 			option_conflict('l', 'F');
12798 		if (edit_logmsg_only)
12799 			option_conflict('l', 'm');
12800 		if (drop_only)
12801 			option_conflict('l', 'd');
12802 		if (fold_only)
12803 			option_conflict('l', 'f');
12804 		if (edit_only)
12805 			option_conflict('l', 'e');
12806 		if (delete_backups)
12807 			option_conflict('l', 'X');
12808 		if (argc != 0 && argc != 1)
12809 			usage_histedit();
12810 	} else if (delete_backups) {
12811 		if (abort_edit)
12812 			option_conflict('X', 'a');
12813 		if (allow_conflict)
12814 			option_conflict('X', 'C');
12815 		if (continue_edit)
12816 			option_conflict('X', 'c');
12817 		if (drop_only)
12818 			option_conflict('X', 'd');
12819 		if (edit_script_path)
12820 			option_conflict('X', 'F');
12821 		if (edit_logmsg_only)
12822 			option_conflict('X', 'm');
12823 		if (fold_only)
12824 			option_conflict('X', 'f');
12825 		if (edit_only)
12826 			option_conflict('X', 'e');
12827 		if (list_backups)
12828 			option_conflict('X', 'l');
12829 		if (argc != 0 && argc != 1)
12830 			usage_histedit();
12831 	} else if (allow_conflict && !continue_edit)
12832 		errx(1, "-C option requires -c");
12833 	else if (argc != 0)
12834 		usage_histedit();
12835 
12836 	cwd = getcwd(NULL, 0);
12837 	if (cwd == NULL) {
12838 		error = got_error_from_errno("getcwd");
12839 		goto done;
12840 	}
12841 
12842 	error = got_repo_pack_fds_open(&pack_fds);
12843 	if (error != NULL)
12844 		goto done;
12845 
12846 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
12847 	if (error) {
12848 		if (list_backups || delete_backups) {
12849 			if (error->code != GOT_ERR_NOT_WORKTREE)
12850 				goto done;
12851 		} else {
12852 			if (error->code == GOT_ERR_NOT_WORKTREE)
12853 				error = wrap_not_worktree_error(error,
12854 				    "histedit", cwd);
12855 			goto done;
12856 		}
12857 	}
12858 
12859 	if (list_backups || delete_backups) {
12860 		error = got_repo_open(&repo,
12861 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
12862 		    NULL, pack_fds);
12863 		if (error != NULL)
12864 			goto done;
12865 		error = apply_unveil(got_repo_get_path(repo), 0,
12866 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
12867 		if (error)
12868 			goto done;
12869 		error = process_backup_refs(
12870 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
12871 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
12872 		goto done; /* nothing else to do */
12873 	} else {
12874 		error = get_gitconfig_path(&gitconfig_path);
12875 		if (error)
12876 			goto done;
12877 		error = got_repo_open(&repo,
12878 		    got_worktree_get_repo_path(worktree), gitconfig_path,
12879 		    pack_fds);
12880 		if (error != NULL)
12881 			goto done;
12882 		error = get_editor(&editor);
12883 		if (error)
12884 			goto done;
12885 		if (unveil(editor, "x") != 0) {
12886 			error = got_error_from_errno2("unveil", editor);
12887 			goto done;
12888 		}
12889 		if (edit_script_path) {
12890 			if (unveil(edit_script_path, "r") != 0) {
12891 				error = got_error_from_errno2("unveil",
12892 				    edit_script_path);
12893 				goto done;
12894 			}
12895 		}
12896 		error = apply_unveil(got_repo_get_path(repo), 0,
12897 		    got_worktree_get_root_path(worktree));
12898 		if (error)
12899 			goto done;
12900 	}
12901 
12902 	if (worktree != NULL && !list_backups && !delete_backups) {
12903 		error = worktree_has_logmsg_ref("histedit", worktree, repo);
12904 		if (error)
12905 			goto done;
12906 	}
12907 
12908 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
12909 	if (error)
12910 		goto done;
12911 	if (rebase_in_progress) {
12912 		error = got_error(GOT_ERR_REBASING);
12913 		goto done;
12914 	}
12915 
12916 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
12917 	    repo);
12918 	if (error)
12919 		goto done;
12920 	if (merge_in_progress) {
12921 		error = got_error(GOT_ERR_MERGE_BUSY);
12922 		goto done;
12923 	}
12924 
12925 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
12926 	if (error)
12927 		goto done;
12928 
12929 	if (edit_in_progress && edit_logmsg_only) {
12930 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12931 		    "histedit operation is in progress in this "
12932 		    "work tree and must be continued or aborted "
12933 		    "before the -m option can be used");
12934 		goto done;
12935 	}
12936 	if (edit_in_progress && drop_only) {
12937 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12938 		    "histedit operation is in progress in this "
12939 		    "work tree and must be continued or aborted "
12940 		    "before the -d option can be used");
12941 		goto done;
12942 	}
12943 	if (edit_in_progress && fold_only) {
12944 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12945 		    "histedit operation is in progress in this "
12946 		    "work tree and must be continued or aborted "
12947 		    "before the -f option can be used");
12948 		goto done;
12949 	}
12950 	if (edit_in_progress && edit_only) {
12951 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12952 		    "histedit operation is in progress in this "
12953 		    "work tree and must be continued or aborted "
12954 		    "before the -e option can be used");
12955 		goto done;
12956 	}
12957 
12958 	if (edit_in_progress && abort_edit) {
12959 		error = got_worktree_histedit_continue(&resume_commit_id,
12960 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12961 		    worktree, repo);
12962 		if (error)
12963 			goto done;
12964 		printf("Switching work tree to %s\n",
12965 		    got_ref_get_symref_target(branch));
12966 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
12967 		    branch, base_commit_id, abort_progress, &upa);
12968 		if (error)
12969 			goto done;
12970 		printf("Histedit of %s aborted\n",
12971 		    got_ref_get_symref_target(branch));
12972 		print_merge_progress_stats(&upa);
12973 		goto done; /* nothing else to do */
12974 	} else if (abort_edit) {
12975 		error = got_error(GOT_ERR_NOT_HISTEDIT);
12976 		goto done;
12977 	}
12978 
12979 	error = get_author(&committer, repo, worktree);
12980 	if (error)
12981 		goto done;
12982 
12983 	if (continue_edit) {
12984 		char *path;
12985 
12986 		if (!edit_in_progress) {
12987 			error = got_error(GOT_ERR_NOT_HISTEDIT);
12988 			goto done;
12989 		}
12990 
12991 		error = got_worktree_get_histedit_script_path(&path, worktree);
12992 		if (error)
12993 			goto done;
12994 
12995 		error = histedit_load_list(&histedit_cmds, path, repo);
12996 		free(path);
12997 		if (error)
12998 			goto done;
12999 
13000 		error = got_worktree_histedit_continue(&resume_commit_id,
13001 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
13002 		    worktree, repo);
13003 		if (error)
13004 			goto done;
13005 
13006 		error = got_ref_resolve(&head_commit_id, repo, branch);
13007 		if (error)
13008 			goto done;
13009 
13010 		error = got_object_open_as_commit(&commit, repo,
13011 		    head_commit_id);
13012 		if (error)
13013 			goto done;
13014 		parent_ids = got_object_commit_get_parent_ids(commit);
13015 		pid = STAILQ_FIRST(parent_ids);
13016 		if (pid == NULL) {
13017 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
13018 			goto done;
13019 		}
13020 		error = collect_commits(&commits, head_commit_id, &pid->id,
13021 		    base_commit_id, got_worktree_get_path_prefix(worktree),
13022 		    GOT_ERR_HISTEDIT_PATH, repo);
13023 		got_object_commit_close(commit);
13024 		commit = NULL;
13025 		if (error)
13026 			goto done;
13027 	} else {
13028 		if (edit_in_progress) {
13029 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
13030 			goto done;
13031 		}
13032 
13033 		error = got_ref_open(&branch, repo,
13034 		    got_worktree_get_head_ref_name(worktree), 0);
13035 		if (error != NULL)
13036 			goto done;
13037 
13038 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
13039 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
13040 			    "will not edit commit history of a branch outside "
13041 			    "the \"refs/heads/\" reference namespace");
13042 			goto done;
13043 		}
13044 
13045 		error = got_ref_resolve(&head_commit_id, repo, branch);
13046 		got_ref_close(branch);
13047 		branch = NULL;
13048 		if (error)
13049 			goto done;
13050 
13051 		error = got_object_open_as_commit(&commit, repo,
13052 		    head_commit_id);
13053 		if (error)
13054 			goto done;
13055 		parent_ids = got_object_commit_get_parent_ids(commit);
13056 		pid = STAILQ_FIRST(parent_ids);
13057 		if (pid == NULL) {
13058 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
13059 			goto done;
13060 		}
13061 		error = collect_commits(&commits, head_commit_id, &pid->id,
13062 		    got_worktree_get_base_commit_id(worktree),
13063 		    got_worktree_get_path_prefix(worktree),
13064 		    GOT_ERR_HISTEDIT_PATH, repo);
13065 		got_object_commit_close(commit);
13066 		commit = NULL;
13067 		if (error)
13068 			goto done;
13069 
13070 		if (STAILQ_EMPTY(&commits)) {
13071 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
13072 			goto done;
13073 		}
13074 
13075 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
13076 		    &base_commit_id, &fileindex, worktree, repo);
13077 		if (error)
13078 			goto done;
13079 
13080 		if (edit_script_path) {
13081 			error = histedit_load_list(&histedit_cmds,
13082 			    edit_script_path, repo);
13083 			if (error) {
13084 				got_worktree_histedit_abort(worktree, fileindex,
13085 				    repo, branch, base_commit_id,
13086 				    abort_progress, &upa);
13087 				print_merge_progress_stats(&upa);
13088 				goto done;
13089 			}
13090 		} else {
13091 			const char *branch_name;
13092 			branch_name = got_ref_get_symref_target(branch);
13093 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
13094 				branch_name += 11;
13095 			error = histedit_edit_script(&histedit_cmds, &commits,
13096 			    branch_name, edit_logmsg_only, fold_only,
13097 			    drop_only, edit_only, editor, repo);
13098 			if (error) {
13099 				got_worktree_histedit_abort(worktree, fileindex,
13100 				    repo, branch, base_commit_id,
13101 				    abort_progress, &upa);
13102 				print_merge_progress_stats(&upa);
13103 				goto done;
13104 			}
13105 
13106 		}
13107 
13108 		error = histedit_save_list(&histedit_cmds, worktree,
13109 		    repo);
13110 		if (error) {
13111 			got_worktree_histedit_abort(worktree, fileindex,
13112 			    repo, branch, base_commit_id,
13113 			    abort_progress, &upa);
13114 			print_merge_progress_stats(&upa);
13115 			goto done;
13116 		}
13117 
13118 	}
13119 
13120 	error = histedit_check_script(&histedit_cmds, &commits, repo);
13121 	if (error)
13122 		goto done;
13123 
13124 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
13125 		if (resume_commit_id) {
13126 			if (got_object_id_cmp(hle->commit_id,
13127 			    resume_commit_id) != 0)
13128 				continue;
13129 
13130 			resume_commit_id = NULL;
13131 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
13132 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
13133 				error = histedit_skip_commit(hle, worktree,
13134 				    repo);
13135 				if (error)
13136 					goto done;
13137 			} else {
13138 				struct got_pathlist_head paths;
13139 				int have_changes = 0;
13140 
13141 				TAILQ_INIT(&paths);
13142 				error = got_pathlist_append(&paths, "", NULL);
13143 				if (error)
13144 					goto done;
13145 				error = got_worktree_status(worktree, &paths,
13146 				    repo, 0, check_local_changes, &have_changes,
13147 				    check_cancelled, NULL);
13148 				got_pathlist_free(&paths,
13149 				    GOT_PATHLIST_FREE_NONE);
13150 				if (error) {
13151 					if (error->code != GOT_ERR_CANCELLED)
13152 						goto done;
13153 					if (sigint_received || sigpipe_received)
13154 						goto done;
13155 				}
13156 				if (have_changes) {
13157 					error = histedit_commit(NULL, worktree,
13158 					    fileindex, tmp_branch, hle,
13159 					    committer, allow_conflict, editor,
13160 					    repo);
13161 					if (error)
13162 						goto done;
13163 				} else {
13164 					error = got_object_open_as_commit(
13165 					    &commit, repo, hle->commit_id);
13166 					if (error)
13167 						goto done;
13168 					error = show_histedit_progress(commit,
13169 					    hle, NULL);
13170 					got_object_commit_close(commit);
13171 					commit = NULL;
13172 					if (error)
13173 						goto done;
13174 				}
13175 			}
13176 			continue;
13177 		}
13178 
13179 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
13180 			error = histedit_skip_commit(hle, worktree, repo);
13181 			if (error)
13182 				goto done;
13183 			continue;
13184 		}
13185 		error = got_object_open_as_commit(&commit, repo,
13186 		    hle->commit_id);
13187 		if (error)
13188 			goto done;
13189 		parent_ids = got_object_commit_get_parent_ids(commit);
13190 		pid = STAILQ_FIRST(parent_ids);
13191 
13192 		error = got_worktree_histedit_merge_files(&merged_paths,
13193 		    worktree, fileindex, &pid->id, hle->commit_id, repo,
13194 		    update_progress, &upa, check_cancelled, NULL);
13195 		if (error)
13196 			goto done;
13197 		got_object_commit_close(commit);
13198 		commit = NULL;
13199 
13200 		print_merge_progress_stats(&upa);
13201 		if (upa.conflicts > 0 || upa.missing > 0 ||
13202 		    upa.not_deleted > 0 || upa.unversioned > 0) {
13203 			if (upa.conflicts > 0) {
13204 				error = show_rebase_merge_conflict(
13205 				    hle->commit_id, repo);
13206 				if (error)
13207 					goto done;
13208 			}
13209 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
13210 			break;
13211 		}
13212 
13213 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
13214 			char *id_str;
13215 			error = got_object_id_str(&id_str, hle->commit_id);
13216 			if (error)
13217 				goto done;
13218 			printf("Stopping histedit for amending commit %s\n",
13219 			    id_str);
13220 			free(id_str);
13221 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
13222 			error = got_worktree_histedit_postpone(worktree,
13223 			    fileindex);
13224 			goto done;
13225 		} else if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
13226 			error = histedit_skip_commit(hle, worktree, repo);
13227 			if (error)
13228 				goto done;
13229 			continue;
13230 		} else if (hle->cmd->code == GOT_HISTEDIT_MESG) {
13231 			error = histedit_edit_logmsg(hle, editor, repo);
13232 			if (error)
13233 				goto done;
13234 		}
13235 
13236 		error = histedit_commit(&merged_paths, worktree, fileindex,
13237 		    tmp_branch, hle, committer, allow_conflict, editor, repo);
13238 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
13239 		if (error)
13240 			goto done;
13241 	}
13242 
13243 	if (upa.conflicts > 0 || upa.missing > 0 ||
13244 	    upa.not_deleted > 0 || upa.unversioned > 0) {
13245 		error = got_worktree_histedit_postpone(worktree, fileindex);
13246 		if (error)
13247 			goto done;
13248 		if (upa.conflicts > 0 && upa.missing == 0 &&
13249 		    upa.not_deleted == 0 && upa.unversioned == 0) {
13250 			error = got_error_msg(GOT_ERR_CONFLICTS,
13251 			    "conflicts must be resolved before histedit "
13252 			    "can continue");
13253 		} else if (upa.conflicts > 0) {
13254 			error = got_error_msg(GOT_ERR_CONFLICTS,
13255 			    "conflicts must be resolved before histedit "
13256 			    "can continue; changes destined for some "
13257 			    "files were not yet merged and should be "
13258 			    "merged manually if required before the "
13259 			    "histedit operation is continued");
13260 		} else {
13261 			error = got_error_msg(GOT_ERR_CONFLICTS,
13262 			    "changes destined for some files were not "
13263 			    "yet merged and should be merged manually "
13264 			    "if required before the histedit operation "
13265 			    "is continued");
13266 		}
13267 	} else
13268 		error = histedit_complete(worktree, fileindex, tmp_branch,
13269 		    branch, repo);
13270 done:
13271 	free(cwd);
13272 	free(editor);
13273 	free(committer);
13274 	free(gitconfig_path);
13275 	got_object_id_queue_free(&commits);
13276 	histedit_free_list(&histedit_cmds);
13277 	free(head_commit_id);
13278 	free(base_commit_id);
13279 	free(resume_commit_id);
13280 	if (commit)
13281 		got_object_commit_close(commit);
13282 	if (branch)
13283 		got_ref_close(branch);
13284 	if (tmp_branch)
13285 		got_ref_close(tmp_branch);
13286 	if (worktree)
13287 		got_worktree_close(worktree);
13288 	if (repo) {
13289 		const struct got_error *close_err = got_repo_close(repo);
13290 		if (error == NULL)
13291 			error = close_err;
13292 	}
13293 	if (pack_fds) {
13294 		const struct got_error *pack_err =
13295 		    got_repo_pack_fds_close(pack_fds);
13296 		if (error == NULL)
13297 			error = pack_err;
13298 	}
13299 	return error;
13300 }
13301 
13302 __dead static void
13303 usage_integrate(void)
13304 {
13305 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
13306 	exit(1);
13307 }
13308 
13309 static const struct got_error *
13310 cmd_integrate(int argc, char *argv[])
13311 {
13312 	const struct got_error *error = NULL;
13313 	struct got_repository *repo = NULL;
13314 	struct got_worktree *worktree = NULL;
13315 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
13316 	const char *branch_arg = NULL;
13317 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
13318 	struct got_fileindex *fileindex = NULL;
13319 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
13320 	int ch;
13321 	struct got_update_progress_arg upa;
13322 	int *pack_fds = NULL;
13323 
13324 #ifndef PROFILE
13325 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13326 	    "unveil", NULL) == -1)
13327 		err(1, "pledge");
13328 #endif
13329 
13330 	while ((ch = getopt(argc, argv, "")) != -1) {
13331 		switch (ch) {
13332 		default:
13333 			usage_integrate();
13334 			/* NOTREACHED */
13335 		}
13336 	}
13337 
13338 	argc -= optind;
13339 	argv += optind;
13340 
13341 	if (argc != 1)
13342 		usage_integrate();
13343 	branch_arg = argv[0];
13344 
13345 	cwd = getcwd(NULL, 0);
13346 	if (cwd == NULL) {
13347 		error = got_error_from_errno("getcwd");
13348 		goto done;
13349 	}
13350 
13351 	error = got_repo_pack_fds_open(&pack_fds);
13352 	if (error != NULL)
13353 		goto done;
13354 
13355 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
13356 	if (error) {
13357 		if (error->code == GOT_ERR_NOT_WORKTREE)
13358 			error = wrap_not_worktree_error(error, "integrate",
13359 			    cwd);
13360 		goto done;
13361 	}
13362 
13363 	error = check_rebase_or_histedit_in_progress(worktree);
13364 	if (error)
13365 		goto done;
13366 
13367 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13368 	    NULL, pack_fds);
13369 	if (error != NULL)
13370 		goto done;
13371 
13372 	error = apply_unveil(got_repo_get_path(repo), 0,
13373 	    got_worktree_get_root_path(worktree));
13374 	if (error)
13375 		goto done;
13376 
13377 	error = check_merge_in_progress(worktree, repo);
13378 	if (error)
13379 		goto done;
13380 
13381 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
13382 		error = got_error_from_errno("asprintf");
13383 		goto done;
13384 	}
13385 
13386 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
13387 	    &base_branch_ref, worktree, refname, repo);
13388 	if (error)
13389 		goto done;
13390 
13391 	refname = strdup(got_ref_get_name(branch_ref));
13392 	if (refname == NULL) {
13393 		error = got_error_from_errno("strdup");
13394 		got_worktree_integrate_abort(worktree, fileindex, repo,
13395 		    branch_ref, base_branch_ref);
13396 		goto done;
13397 	}
13398 	base_refname = strdup(got_ref_get_name(base_branch_ref));
13399 	if (base_refname == NULL) {
13400 		error = got_error_from_errno("strdup");
13401 		got_worktree_integrate_abort(worktree, fileindex, repo,
13402 		    branch_ref, base_branch_ref);
13403 		goto done;
13404 	}
13405 	if (strncmp(base_refname, "refs/heads/", 11) != 0) {
13406 		error = got_error(GOT_ERR_INTEGRATE_BRANCH);
13407 		got_worktree_integrate_abort(worktree, fileindex, repo,
13408 		    branch_ref, base_branch_ref);
13409 		goto done;
13410 	}
13411 
13412 	error = got_ref_resolve(&commit_id, repo, branch_ref);
13413 	if (error)
13414 		goto done;
13415 
13416 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
13417 	if (error)
13418 		goto done;
13419 
13420 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
13421 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
13422 		    "specified branch has already been integrated");
13423 		got_worktree_integrate_abort(worktree, fileindex, repo,
13424 		    branch_ref, base_branch_ref);
13425 		goto done;
13426 	}
13427 
13428 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
13429 	if (error) {
13430 		if (error->code == GOT_ERR_ANCESTRY)
13431 			error = got_error(GOT_ERR_REBASE_REQUIRED);
13432 		got_worktree_integrate_abort(worktree, fileindex, repo,
13433 		    branch_ref, base_branch_ref);
13434 		goto done;
13435 	}
13436 
13437 	memset(&upa, 0, sizeof(upa));
13438 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
13439 	    branch_ref, base_branch_ref, update_progress, &upa,
13440 	    check_cancelled, NULL);
13441 	if (error)
13442 		goto done;
13443 
13444 	printf("Integrated %s into %s\n", refname, base_refname);
13445 	print_update_progress_stats(&upa);
13446 done:
13447 	if (repo) {
13448 		const struct got_error *close_err = got_repo_close(repo);
13449 		if (error == NULL)
13450 			error = close_err;
13451 	}
13452 	if (worktree)
13453 		got_worktree_close(worktree);
13454 	if (pack_fds) {
13455 		const struct got_error *pack_err =
13456 		    got_repo_pack_fds_close(pack_fds);
13457 		if (error == NULL)
13458 			error = pack_err;
13459 	}
13460 	free(cwd);
13461 	free(base_commit_id);
13462 	free(commit_id);
13463 	free(refname);
13464 	free(base_refname);
13465 	return error;
13466 }
13467 
13468 __dead static void
13469 usage_merge(void)
13470 {
13471 	fprintf(stderr, "usage: %s merge [-aCcn] [branch]\n", getprogname());
13472 	exit(1);
13473 }
13474 
13475 static const struct got_error *
13476 cmd_merge(int argc, char *argv[])
13477 {
13478 	const struct got_error *error = NULL;
13479 	struct got_worktree *worktree = NULL;
13480 	struct got_repository *repo = NULL;
13481 	struct got_fileindex *fileindex = NULL;
13482 	char *cwd = NULL, *id_str = NULL, *author = NULL;
13483 	char *gitconfig_path = NULL;
13484 	struct got_reference *branch = NULL, *wt_branch = NULL;
13485 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
13486 	struct got_object_id *wt_branch_tip = NULL;
13487 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
13488 	int allow_conflict = 0, prefer_fast_forward = 1, interrupt_merge = 0;
13489 	struct got_update_progress_arg upa;
13490 	struct got_object_id *merge_commit_id = NULL;
13491 	char *branch_name = NULL;
13492 	int *pack_fds = NULL;
13493 
13494 	memset(&upa, 0, sizeof(upa));
13495 
13496 #ifndef PROFILE
13497 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13498 	    "unveil", NULL) == -1)
13499 		err(1, "pledge");
13500 #endif
13501 
13502 	while ((ch = getopt(argc, argv, "aCcMn")) != -1) {
13503 		switch (ch) {
13504 		case 'a':
13505 			abort_merge = 1;
13506 			break;
13507 		case 'C':
13508 			allow_conflict = 1;
13509 			break;
13510 		case 'c':
13511 			continue_merge = 1;
13512 			break;
13513 		case 'M':
13514 			prefer_fast_forward = 0;
13515 			break;
13516 		case 'n':
13517 			interrupt_merge = 1;
13518 			break;
13519 		default:
13520 			usage_merge();
13521 			/* NOTREACHED */
13522 		}
13523 	}
13524 
13525 	argc -= optind;
13526 	argv += optind;
13527 
13528 	if (abort_merge) {
13529 		if (continue_merge)
13530 			option_conflict('a', 'c');
13531 		if (!prefer_fast_forward)
13532 			option_conflict('a', 'M');
13533 		if (interrupt_merge)
13534 			option_conflict('a', 'n');
13535 	} else if (continue_merge) {
13536 		if (!prefer_fast_forward)
13537 			option_conflict('c', 'M');
13538 		if (interrupt_merge)
13539 			option_conflict('c', 'n');
13540 	}
13541 	if (allow_conflict) {
13542 		if (!continue_merge)
13543 			errx(1, "-C option requires -c");
13544 	}
13545 	if (abort_merge || continue_merge) {
13546 		if (argc != 0)
13547 			usage_merge();
13548 	} else if (argc != 1)
13549 		usage_merge();
13550 
13551 	cwd = getcwd(NULL, 0);
13552 	if (cwd == NULL) {
13553 		error = got_error_from_errno("getcwd");
13554 		goto done;
13555 	}
13556 
13557 	error = got_repo_pack_fds_open(&pack_fds);
13558 	if (error != NULL)
13559 		goto done;
13560 
13561 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
13562 	if (error) {
13563 		if (error->code == GOT_ERR_NOT_WORKTREE)
13564 			error = wrap_not_worktree_error(error,
13565 			    "merge", cwd);
13566 		goto done;
13567 	}
13568 
13569 	error = get_gitconfig_path(&gitconfig_path);
13570 	if (error)
13571 		goto done;
13572 	error = got_repo_open(&repo,
13573 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
13574 	    gitconfig_path, pack_fds);
13575 	if (error != NULL)
13576 		goto done;
13577 
13578 	if (worktree != NULL) {
13579 		error = worktree_has_logmsg_ref("merge", worktree, repo);
13580 		if (error)
13581 			goto done;
13582 	}
13583 
13584 	error = apply_unveil(got_repo_get_path(repo), 0,
13585 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
13586 	if (error)
13587 		goto done;
13588 
13589 	error = check_rebase_or_histedit_in_progress(worktree);
13590 	if (error)
13591 		goto done;
13592 
13593 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
13594 	    repo);
13595 	if (error)
13596 		goto done;
13597 
13598 	if (merge_in_progress && !(abort_merge || continue_merge)) {
13599 		error = got_error(GOT_ERR_MERGE_BUSY);
13600 		goto done;
13601 	}
13602 
13603 	if (!merge_in_progress && (abort_merge || continue_merge)) {
13604 		error = got_error(GOT_ERR_NOT_MERGING);
13605 		goto done;
13606 	}
13607 
13608 	if (abort_merge) {
13609 		error = got_worktree_merge_continue(&branch_name,
13610 		    &branch_tip, &fileindex, worktree, repo);
13611 		if (error)
13612 			goto done;
13613 		error = got_worktree_merge_abort(worktree, fileindex, repo,
13614 		    abort_progress, &upa);
13615 		if (error)
13616 			goto done;
13617 		printf("Merge of %s aborted\n", branch_name);
13618 		goto done; /* nothing else to do */
13619 	}
13620 
13621 	if (strncmp(got_worktree_get_head_ref_name(worktree),
13622 	    "refs/heads/", 11) != 0) {
13623 		error = got_error_fmt(GOT_ERR_COMMIT_BRANCH,
13624 		    "work tree's current branch %s is outside the "
13625 		    "\"refs/heads/\" reference namespace; "
13626 		    "update -b required",
13627 		    got_worktree_get_head_ref_name(worktree));
13628 		goto done;
13629 	}
13630 
13631 	error = get_author(&author, repo, worktree);
13632 	if (error)
13633 		goto done;
13634 
13635 	error = got_ref_open(&wt_branch, repo,
13636 	    got_worktree_get_head_ref_name(worktree), 0);
13637 	if (error)
13638 		goto done;
13639 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
13640 	if (error)
13641 		goto done;
13642 
13643 	if (continue_merge) {
13644 		struct got_object_id *base_commit_id;
13645 		base_commit_id = got_worktree_get_base_commit_id(worktree);
13646 		if (got_object_id_cmp(wt_branch_tip, base_commit_id) != 0) {
13647 			error = got_error(GOT_ERR_MERGE_COMMIT_OUT_OF_DATE);
13648 			goto done;
13649 		}
13650 		error = got_worktree_merge_continue(&branch_name,
13651 		    &branch_tip, &fileindex, worktree, repo);
13652 		if (error)
13653 			goto done;
13654 	} else {
13655 		error = got_ref_open(&branch, repo, argv[0], 0);
13656 		if (error != NULL)
13657 			goto done;
13658 		branch_name = strdup(got_ref_get_name(branch));
13659 		if (branch_name == NULL) {
13660 			error = got_error_from_errno("strdup");
13661 			goto done;
13662 		}
13663 		error = got_ref_resolve(&branch_tip, repo, branch);
13664 		if (error)
13665 			goto done;
13666 	}
13667 
13668 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
13669 	    wt_branch_tip, branch_tip, 0, 0, repo,
13670 	    check_cancelled, NULL);
13671 	if (error && error->code != GOT_ERR_ANCESTRY)
13672 		goto done;
13673 
13674 	if (!continue_merge) {
13675 		error = check_path_prefix(wt_branch_tip, branch_tip,
13676 		    got_worktree_get_path_prefix(worktree),
13677 		    GOT_ERR_MERGE_PATH, repo);
13678 		if (error)
13679 			goto done;
13680 		error = got_worktree_merge_prepare(&fileindex, worktree, repo);
13681 		if (error)
13682 			goto done;
13683 		if (prefer_fast_forward && yca_id &&
13684 		    got_object_id_cmp(wt_branch_tip, yca_id) == 0) {
13685 			struct got_pathlist_head paths;
13686 			if (interrupt_merge) {
13687 				error = got_error_fmt(GOT_ERR_BAD_OPTION,
13688 				    "there are no changes to merge since %s "
13689 				    "is already based on %s; merge cannot be "
13690 				    "interrupted for amending; -n",
13691 				    branch_name, got_ref_get_name(wt_branch));
13692 				goto done;
13693 			}
13694 			printf("Forwarding %s to %s\n",
13695 				got_ref_get_name(wt_branch), branch_name);
13696 			error = got_ref_change_ref(wt_branch, branch_tip);
13697 			if (error)
13698 				goto done;
13699 			error = got_ref_write(wt_branch, repo);
13700 			if (error)
13701 				goto done;
13702 			error = got_worktree_set_base_commit_id(worktree, repo,
13703 			    branch_tip);
13704 			if (error)
13705 				goto done;
13706 			TAILQ_INIT(&paths);
13707 			error = got_pathlist_append(&paths, "", NULL);
13708 			if (error)
13709 				goto done;
13710 			error = got_worktree_checkout_files(worktree,
13711 			    &paths, repo, update_progress, &upa,
13712 			    check_cancelled, NULL);
13713 			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
13714 			if (error)
13715 				goto done;
13716 			if (upa.did_something) {
13717 				char *id_str;
13718 				error = got_object_id_str(&id_str, branch_tip);
13719 				if (error)
13720 					goto done;
13721 				printf("Updated to commit %s\n", id_str);
13722 				free(id_str);
13723 			} else
13724 				printf("Already up-to-date\n");
13725 			print_update_progress_stats(&upa);
13726 			goto done;
13727 		}
13728 		error = got_worktree_merge_write_refs(worktree, branch, repo);
13729 		if (error)
13730 			goto done;
13731 
13732 		error = got_worktree_merge_branch(worktree, fileindex,
13733 		    yca_id, branch_tip, repo, update_progress, &upa,
13734 		    check_cancelled, NULL);
13735 		if (error)
13736 			goto done;
13737 		print_merge_progress_stats(&upa);
13738 		if (!upa.did_something) {
13739 			error = got_worktree_merge_abort(worktree, fileindex,
13740 			    repo, abort_progress, &upa);
13741 			if (error)
13742 				goto done;
13743 			printf("Already up-to-date\n");
13744 			goto done;
13745 		}
13746 	}
13747 
13748 	if (interrupt_merge) {
13749 		error = got_worktree_merge_postpone(worktree, fileindex);
13750 		if (error)
13751 			goto done;
13752 		printf("Merge of %s interrupted on request\n", branch_name);
13753 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
13754 	    upa.not_deleted > 0 || upa.unversioned > 0) {
13755 		error = got_worktree_merge_postpone(worktree, fileindex);
13756 		if (error)
13757 			goto done;
13758 		if (upa.conflicts > 0 && upa.missing == 0 &&
13759 		    upa.not_deleted == 0 && upa.unversioned == 0) {
13760 			error = got_error_msg(GOT_ERR_CONFLICTS,
13761 			    "conflicts must be resolved before merging "
13762 			    "can continue");
13763 		} else if (upa.conflicts > 0) {
13764 			error = got_error_msg(GOT_ERR_CONFLICTS,
13765 			    "conflicts must be resolved before merging "
13766 			    "can continue; changes destined for some "
13767 			    "files were not yet merged and "
13768 			    "should be merged manually if required before the "
13769 			    "merge operation is continued");
13770 		} else {
13771 			error = got_error_msg(GOT_ERR_CONFLICTS,
13772 			    "changes destined for some "
13773 			    "files were not yet merged and should be "
13774 			    "merged manually if required before the "
13775 			    "merge operation is continued");
13776 		}
13777 		goto done;
13778 	} else {
13779 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
13780 		    fileindex, author, NULL, 1, branch_tip, branch_name,
13781 		    allow_conflict, repo, continue_merge ? print_status : NULL,
13782 		    NULL);
13783 		if (error)
13784 			goto done;
13785 		error = got_worktree_merge_complete(worktree, fileindex, repo);
13786 		if (error)
13787 			goto done;
13788 		error = got_object_id_str(&id_str, merge_commit_id);
13789 		if (error)
13790 			goto done;
13791 		printf("Merged %s into %s: %s\n", branch_name,
13792 		    got_worktree_get_head_ref_name(worktree),
13793 		    id_str);
13794 
13795 	}
13796 done:
13797 	free(gitconfig_path);
13798 	free(id_str);
13799 	free(merge_commit_id);
13800 	free(author);
13801 	free(branch_tip);
13802 	free(branch_name);
13803 	free(yca_id);
13804 	if (branch)
13805 		got_ref_close(branch);
13806 	if (wt_branch)
13807 		got_ref_close(wt_branch);
13808 	if (worktree)
13809 		got_worktree_close(worktree);
13810 	if (repo) {
13811 		const struct got_error *close_err = got_repo_close(repo);
13812 		if (error == NULL)
13813 			error = close_err;
13814 	}
13815 	if (pack_fds) {
13816 		const struct got_error *pack_err =
13817 		    got_repo_pack_fds_close(pack_fds);
13818 		if (error == NULL)
13819 			error = pack_err;
13820 	}
13821 	return error;
13822 }
13823 
13824 __dead static void
13825 usage_stage(void)
13826 {
13827 	fprintf(stderr, "usage: %s stage [-lpS] [-F response-script] "
13828 	    "[path ...]\n", getprogname());
13829 	exit(1);
13830 }
13831 
13832 static const struct got_error *
13833 print_stage(void *arg, unsigned char status, unsigned char staged_status,
13834     const char *path, struct got_object_id *blob_id,
13835     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
13836     int dirfd, const char *de_name)
13837 {
13838 	const struct got_error *err = NULL;
13839 	char *id_str = NULL;
13840 
13841 	if (staged_status != GOT_STATUS_ADD &&
13842 	    staged_status != GOT_STATUS_MODIFY &&
13843 	    staged_status != GOT_STATUS_DELETE)
13844 		return NULL;
13845 
13846 	if (staged_status == GOT_STATUS_ADD ||
13847 	    staged_status == GOT_STATUS_MODIFY)
13848 		err = got_object_id_str(&id_str, staged_blob_id);
13849 	else
13850 		err = got_object_id_str(&id_str, blob_id);
13851 	if (err)
13852 		return err;
13853 
13854 	printf("%s %c %s\n", id_str, staged_status, path);
13855 	free(id_str);
13856 	return NULL;
13857 }
13858 
13859 static const struct got_error *
13860 cmd_stage(int argc, char *argv[])
13861 {
13862 	const struct got_error *error = NULL;
13863 	struct got_repository *repo = NULL;
13864 	struct got_worktree *worktree = NULL;
13865 	char *cwd = NULL;
13866 	struct got_pathlist_head paths;
13867 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
13868 	FILE *patch_script_file = NULL;
13869 	const char *patch_script_path = NULL;
13870 	struct choose_patch_arg cpa;
13871 	int *pack_fds = NULL;
13872 
13873 	TAILQ_INIT(&paths);
13874 
13875 #ifndef PROFILE
13876 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13877 	    "unveil", NULL) == -1)
13878 		err(1, "pledge");
13879 #endif
13880 
13881 	while ((ch = getopt(argc, argv, "F:lpS")) != -1) {
13882 		switch (ch) {
13883 		case 'F':
13884 			patch_script_path = optarg;
13885 			break;
13886 		case 'l':
13887 			list_stage = 1;
13888 			break;
13889 		case 'p':
13890 			pflag = 1;
13891 			break;
13892 		case 'S':
13893 			allow_bad_symlinks = 1;
13894 			break;
13895 		default:
13896 			usage_stage();
13897 			/* NOTREACHED */
13898 		}
13899 	}
13900 
13901 	argc -= optind;
13902 	argv += optind;
13903 
13904 	if (list_stage && (pflag || patch_script_path))
13905 		errx(1, "-l option cannot be used with other options");
13906 	if (patch_script_path && !pflag)
13907 		errx(1, "-F option can only be used together with -p option");
13908 
13909 	cwd = getcwd(NULL, 0);
13910 	if (cwd == NULL) {
13911 		error = got_error_from_errno("getcwd");
13912 		goto done;
13913 	}
13914 
13915 	error = got_repo_pack_fds_open(&pack_fds);
13916 	if (error != NULL)
13917 		goto done;
13918 
13919 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
13920 	if (error) {
13921 		if (error->code == GOT_ERR_NOT_WORKTREE)
13922 			error = wrap_not_worktree_error(error, "stage", cwd);
13923 		goto done;
13924 	}
13925 
13926 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13927 	    NULL, pack_fds);
13928 	if (error != NULL)
13929 		goto done;
13930 
13931 	if (patch_script_path) {
13932 		patch_script_file = fopen(patch_script_path, "re");
13933 		if (patch_script_file == NULL) {
13934 			error = got_error_from_errno2("fopen",
13935 			    patch_script_path);
13936 			goto done;
13937 		}
13938 	}
13939 	error = apply_unveil(got_repo_get_path(repo), 0,
13940 	    got_worktree_get_root_path(worktree));
13941 	if (error)
13942 		goto done;
13943 
13944 	error = check_merge_in_progress(worktree, repo);
13945 	if (error)
13946 		goto done;
13947 
13948 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13949 	if (error)
13950 		goto done;
13951 
13952 	if (list_stage)
13953 		error = got_worktree_status(worktree, &paths, repo, 0,
13954 		    print_stage, NULL, check_cancelled, NULL);
13955 	else {
13956 		cpa.patch_script_file = patch_script_file;
13957 		cpa.action = "stage";
13958 		error = got_worktree_stage(worktree, &paths,
13959 		    pflag ? NULL : print_status, NULL,
13960 		    pflag ? choose_patch : NULL, &cpa,
13961 		    allow_bad_symlinks, repo);
13962 	}
13963 done:
13964 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13965 	    error == NULL)
13966 		error = got_error_from_errno2("fclose", patch_script_path);
13967 	if (repo) {
13968 		const struct got_error *close_err = got_repo_close(repo);
13969 		if (error == NULL)
13970 			error = close_err;
13971 	}
13972 	if (worktree)
13973 		got_worktree_close(worktree);
13974 	if (pack_fds) {
13975 		const struct got_error *pack_err =
13976 		    got_repo_pack_fds_close(pack_fds);
13977 		if (error == NULL)
13978 			error = pack_err;
13979 	}
13980 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13981 	free(cwd);
13982 	return error;
13983 }
13984 
13985 __dead static void
13986 usage_unstage(void)
13987 {
13988 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
13989 	    "[path ...]\n", getprogname());
13990 	exit(1);
13991 }
13992 
13993 
13994 static const struct got_error *
13995 cmd_unstage(int argc, char *argv[])
13996 {
13997 	const struct got_error *error = NULL;
13998 	struct got_repository *repo = NULL;
13999 	struct got_worktree *worktree = NULL;
14000 	char *cwd = NULL;
14001 	struct got_pathlist_head paths;
14002 	int ch, pflag = 0;
14003 	struct got_update_progress_arg upa;
14004 	FILE *patch_script_file = NULL;
14005 	const char *patch_script_path = NULL;
14006 	struct choose_patch_arg cpa;
14007 	int *pack_fds = NULL;
14008 
14009 	TAILQ_INIT(&paths);
14010 
14011 #ifndef PROFILE
14012 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
14013 	    "unveil", NULL) == -1)
14014 		err(1, "pledge");
14015 #endif
14016 
14017 	while ((ch = getopt(argc, argv, "F:p")) != -1) {
14018 		switch (ch) {
14019 		case 'F':
14020 			patch_script_path = optarg;
14021 			break;
14022 		case 'p':
14023 			pflag = 1;
14024 			break;
14025 		default:
14026 			usage_unstage();
14027 			/* NOTREACHED */
14028 		}
14029 	}
14030 
14031 	argc -= optind;
14032 	argv += optind;
14033 
14034 	if (patch_script_path && !pflag)
14035 		errx(1, "-F option can only be used together with -p option");
14036 
14037 	cwd = getcwd(NULL, 0);
14038 	if (cwd == NULL) {
14039 		error = got_error_from_errno("getcwd");
14040 		goto done;
14041 	}
14042 
14043 	error = got_repo_pack_fds_open(&pack_fds);
14044 	if (error != NULL)
14045 		goto done;
14046 
14047 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
14048 	if (error) {
14049 		if (error->code == GOT_ERR_NOT_WORKTREE)
14050 			error = wrap_not_worktree_error(error, "unstage", cwd);
14051 		goto done;
14052 	}
14053 
14054 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
14055 	    NULL, pack_fds);
14056 	if (error != NULL)
14057 		goto done;
14058 
14059 	if (patch_script_path) {
14060 		patch_script_file = fopen(patch_script_path, "re");
14061 		if (patch_script_file == NULL) {
14062 			error = got_error_from_errno2("fopen",
14063 			    patch_script_path);
14064 			goto done;
14065 		}
14066 	}
14067 
14068 	error = apply_unveil(got_repo_get_path(repo), 0,
14069 	    got_worktree_get_root_path(worktree));
14070 	if (error)
14071 		goto done;
14072 
14073 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
14074 	if (error)
14075 		goto done;
14076 
14077 	cpa.patch_script_file = patch_script_file;
14078 	cpa.action = "unstage";
14079 	memset(&upa, 0, sizeof(upa));
14080 	error = got_worktree_unstage(worktree, &paths, update_progress,
14081 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
14082 	if (!error)
14083 		print_merge_progress_stats(&upa);
14084 done:
14085 	if (patch_script_file && fclose(patch_script_file) == EOF &&
14086 	    error == NULL)
14087 		error = got_error_from_errno2("fclose", patch_script_path);
14088 	if (repo) {
14089 		const struct got_error *close_err = got_repo_close(repo);
14090 		if (error == NULL)
14091 			error = close_err;
14092 	}
14093 	if (worktree)
14094 		got_worktree_close(worktree);
14095 	if (pack_fds) {
14096 		const struct got_error *pack_err =
14097 		    got_repo_pack_fds_close(pack_fds);
14098 		if (error == NULL)
14099 			error = pack_err;
14100 	}
14101 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
14102 	free(cwd);
14103 	return error;
14104 }
14105 
14106 __dead static void
14107 usage_cat(void)
14108 {
14109 	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
14110 	    "arg ...\n", getprogname());
14111 	exit(1);
14112 }
14113 
14114 static const struct got_error *
14115 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
14116 {
14117 	const struct got_error *err;
14118 	struct got_blob_object *blob;
14119 	int fd = -1;
14120 
14121 	fd = got_opentempfd();
14122 	if (fd == -1)
14123 		return got_error_from_errno("got_opentempfd");
14124 
14125 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
14126 	if (err)
14127 		goto done;
14128 
14129 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
14130 done:
14131 	if (fd != -1 && close(fd) == -1 && err == NULL)
14132 		err = got_error_from_errno("close");
14133 	if (blob)
14134 		got_object_blob_close(blob);
14135 	return err;
14136 }
14137 
14138 static const struct got_error *
14139 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
14140 {
14141 	const struct got_error *err;
14142 	struct got_tree_object *tree;
14143 	int nentries, i;
14144 
14145 	err = got_object_open_as_tree(&tree, repo, id);
14146 	if (err)
14147 		return err;
14148 
14149 	nentries = got_object_tree_get_nentries(tree);
14150 	for (i = 0; i < nentries; i++) {
14151 		struct got_tree_entry *te;
14152 		char *id_str;
14153 		if (sigint_received || sigpipe_received)
14154 			break;
14155 		te = got_object_tree_get_entry(tree, i);
14156 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
14157 		if (err)
14158 			break;
14159 		fprintf(outfile, "%s %.7o %s\n", id_str,
14160 		    got_tree_entry_get_mode(te),
14161 		    got_tree_entry_get_name(te));
14162 		free(id_str);
14163 	}
14164 
14165 	got_object_tree_close(tree);
14166 	return err;
14167 }
14168 
14169 static const struct got_error *
14170 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
14171 {
14172 	const struct got_error *err;
14173 	struct got_commit_object *commit;
14174 	const struct got_object_id_queue *parent_ids;
14175 	struct got_object_qid *pid;
14176 	char *id_str = NULL;
14177 	const char *logmsg = NULL;
14178 	char gmtoff[6];
14179 
14180 	err = got_object_open_as_commit(&commit, repo, id);
14181 	if (err)
14182 		return err;
14183 
14184 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
14185 	if (err)
14186 		goto done;
14187 
14188 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
14189 	parent_ids = got_object_commit_get_parent_ids(commit);
14190 	fprintf(outfile, "numparents %d\n",
14191 	    got_object_commit_get_nparents(commit));
14192 	STAILQ_FOREACH(pid, parent_ids, entry) {
14193 		char *pid_str;
14194 		err = got_object_id_str(&pid_str, &pid->id);
14195 		if (err)
14196 			goto done;
14197 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
14198 		free(pid_str);
14199 	}
14200 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
14201 	    got_object_commit_get_author_gmtoff(commit));
14202 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
14203 	    got_object_commit_get_author(commit),
14204 	    (long long)got_object_commit_get_author_time(commit),
14205 	    gmtoff);
14206 
14207 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
14208 	    got_object_commit_get_committer_gmtoff(commit));
14209 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
14210 	    got_object_commit_get_committer(commit),
14211 	    (long long)got_object_commit_get_committer_time(commit),
14212 	    gmtoff);
14213 
14214 	logmsg = got_object_commit_get_logmsg_raw(commit);
14215 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
14216 	fprintf(outfile, "%s", logmsg);
14217 done:
14218 	free(id_str);
14219 	got_object_commit_close(commit);
14220 	return err;
14221 }
14222 
14223 static const struct got_error *
14224 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
14225 {
14226 	const struct got_error *err;
14227 	struct got_tag_object *tag;
14228 	char *id_str = NULL;
14229 	const char *tagmsg = NULL;
14230 	char gmtoff[6];
14231 
14232 	err = got_object_open_as_tag(&tag, repo, id);
14233 	if (err)
14234 		return err;
14235 
14236 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
14237 	if (err)
14238 		goto done;
14239 
14240 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
14241 
14242 	switch (got_object_tag_get_object_type(tag)) {
14243 	case GOT_OBJ_TYPE_BLOB:
14244 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
14245 		    GOT_OBJ_LABEL_BLOB);
14246 		break;
14247 	case GOT_OBJ_TYPE_TREE:
14248 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
14249 		    GOT_OBJ_LABEL_TREE);
14250 		break;
14251 	case GOT_OBJ_TYPE_COMMIT:
14252 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
14253 		    GOT_OBJ_LABEL_COMMIT);
14254 		break;
14255 	case GOT_OBJ_TYPE_TAG:
14256 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
14257 		    GOT_OBJ_LABEL_TAG);
14258 		break;
14259 	default:
14260 		break;
14261 	}
14262 
14263 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
14264 	    got_object_tag_get_name(tag));
14265 
14266 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
14267 	    got_object_tag_get_tagger_gmtoff(tag));
14268 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
14269 	    got_object_tag_get_tagger(tag),
14270 	    (long long)got_object_tag_get_tagger_time(tag),
14271 	    gmtoff);
14272 
14273 	tagmsg = got_object_tag_get_message(tag);
14274 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
14275 	fprintf(outfile, "%s", tagmsg);
14276 done:
14277 	free(id_str);
14278 	got_object_tag_close(tag);
14279 	return err;
14280 }
14281 
14282 static const struct got_error *
14283 cmd_cat(int argc, char *argv[])
14284 {
14285 	const struct got_error *error;
14286 	struct got_repository *repo = NULL;
14287 	struct got_worktree *worktree = NULL;
14288 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
14289 	char *keyword_idstr = NULL;
14290 	const char *commit_id_str = NULL;
14291 	struct got_object_id *id = NULL, *commit_id = NULL;
14292 	struct got_commit_object *commit = NULL;
14293 	int ch, obj_type, i, force_path = 0;
14294 	struct got_reflist_head refs;
14295 	int *pack_fds = NULL;
14296 
14297 	TAILQ_INIT(&refs);
14298 
14299 #ifndef PROFILE
14300 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
14301 	    NULL) == -1)
14302 		err(1, "pledge");
14303 #endif
14304 
14305 	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
14306 		switch (ch) {
14307 		case 'c':
14308 			commit_id_str = optarg;
14309 			break;
14310 		case 'P':
14311 			force_path = 1;
14312 			break;
14313 		case 'r':
14314 			repo_path = realpath(optarg, NULL);
14315 			if (repo_path == NULL)
14316 				return got_error_from_errno2("realpath",
14317 				    optarg);
14318 			got_path_strip_trailing_slashes(repo_path);
14319 			break;
14320 		default:
14321 			usage_cat();
14322 			/* NOTREACHED */
14323 		}
14324 	}
14325 
14326 	argc -= optind;
14327 	argv += optind;
14328 
14329 	cwd = getcwd(NULL, 0);
14330 	if (cwd == NULL) {
14331 		error = got_error_from_errno("getcwd");
14332 		goto done;
14333 	}
14334 
14335 	error = got_repo_pack_fds_open(&pack_fds);
14336 	if (error != NULL)
14337 		goto done;
14338 
14339 	if (repo_path == NULL) {
14340 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
14341 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
14342 			goto done;
14343 		if (worktree) {
14344 			repo_path = strdup(
14345 			    got_worktree_get_repo_path(worktree));
14346 			if (repo_path == NULL) {
14347 				error = got_error_from_errno("strdup");
14348 				goto done;
14349 			}
14350 
14351 			if (commit_id_str == NULL) {
14352 				/* Release work tree lock. */
14353 				got_worktree_close(worktree);
14354 				worktree = NULL;
14355 			}
14356 		}
14357 	}
14358 
14359 	if (repo_path == NULL) {
14360 		repo_path = strdup(cwd);
14361 		if (repo_path == NULL)
14362 			return got_error_from_errno("strdup");
14363 	}
14364 
14365 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
14366 	free(repo_path);
14367 	if (error != NULL)
14368 		goto done;
14369 
14370 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
14371 	if (error)
14372 		goto done;
14373 
14374 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
14375 	if (error)
14376 		goto done;
14377 
14378 	if (commit_id_str != NULL) {
14379 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
14380 		    repo, worktree);
14381 		if (error != NULL)
14382 			goto done;
14383 		if (keyword_idstr != NULL)
14384 			commit_id_str = keyword_idstr;
14385 		if (worktree != NULL) {
14386 			got_worktree_close(worktree);
14387 			worktree = NULL;
14388 		}
14389 	} else
14390 		commit_id_str = GOT_REF_HEAD;
14391 	error = got_repo_match_object_id(&commit_id, NULL,
14392 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
14393 	if (error)
14394 		goto done;
14395 
14396 	error = got_object_open_as_commit(&commit, repo, commit_id);
14397 	if (error)
14398 		goto done;
14399 
14400 	for (i = 0; i < argc; i++) {
14401 		if (force_path) {
14402 			error = got_object_id_by_path(&id, repo, commit,
14403 			    argv[i]);
14404 			if (error)
14405 				break;
14406 		} else {
14407 			error = got_repo_match_object_id(&id, &label, argv[i],
14408 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
14409 			    repo);
14410 			if (error) {
14411 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
14412 				    error->code != GOT_ERR_NOT_REF)
14413 					break;
14414 				error = got_object_id_by_path(&id, repo,
14415 				    commit, argv[i]);
14416 				if (error)
14417 					break;
14418 			}
14419 		}
14420 
14421 		error = got_object_get_type(&obj_type, repo, id);
14422 		if (error)
14423 			break;
14424 
14425 		switch (obj_type) {
14426 		case GOT_OBJ_TYPE_BLOB:
14427 			error = cat_blob(id, repo, stdout);
14428 			break;
14429 		case GOT_OBJ_TYPE_TREE:
14430 			error = cat_tree(id, repo, stdout);
14431 			break;
14432 		case GOT_OBJ_TYPE_COMMIT:
14433 			error = cat_commit(id, repo, stdout);
14434 			break;
14435 		case GOT_OBJ_TYPE_TAG:
14436 			error = cat_tag(id, repo, stdout);
14437 			break;
14438 		default:
14439 			error = got_error(GOT_ERR_OBJ_TYPE);
14440 			break;
14441 		}
14442 		if (error)
14443 			break;
14444 		free(label);
14445 		label = NULL;
14446 		free(id);
14447 		id = NULL;
14448 	}
14449 done:
14450 	free(label);
14451 	free(id);
14452 	free(commit_id);
14453 	free(keyword_idstr);
14454 	if (commit)
14455 		got_object_commit_close(commit);
14456 	if (worktree)
14457 		got_worktree_close(worktree);
14458 	if (repo) {
14459 		const struct got_error *close_err = got_repo_close(repo);
14460 		if (error == NULL)
14461 			error = close_err;
14462 	}
14463 	if (pack_fds) {
14464 		const struct got_error *pack_err =
14465 		    got_repo_pack_fds_close(pack_fds);
14466 		if (error == NULL)
14467 			error = pack_err;
14468 	}
14469 
14470 	got_ref_list_free(&refs);
14471 	return error;
14472 }
14473 
14474 __dead static void
14475 usage_info(void)
14476 {
14477 	fprintf(stderr, "usage: %s info [path ...]\n",
14478 	    getprogname());
14479 	exit(1);
14480 }
14481 
14482 static const struct got_error *
14483 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
14484     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
14485     struct got_object_id *commit_id)
14486 {
14487 	const struct got_error *err = NULL;
14488 	char *id_str = NULL;
14489 	char datebuf[128];
14490 	struct tm mytm, *tm;
14491 	struct got_pathlist_head *paths = arg;
14492 	struct got_pathlist_entry *pe;
14493 
14494 	/*
14495 	 * Clear error indication from any of the path arguments which
14496 	 * would cause this file index entry to be displayed.
14497 	 */
14498 	TAILQ_FOREACH(pe, paths, entry) {
14499 		if (got_path_cmp(path, pe->path, strlen(path),
14500 		    pe->path_len) == 0 ||
14501 		    got_path_is_child(path, pe->path, pe->path_len))
14502 			pe->data = NULL; /* no error */
14503 	}
14504 
14505 	printf(GOT_COMMIT_SEP_STR);
14506 	if (S_ISLNK(mode))
14507 		printf("symlink: %s\n", path);
14508 	else if (S_ISREG(mode)) {
14509 		printf("file: %s\n", path);
14510 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
14511 	} else if (S_ISDIR(mode))
14512 		printf("directory: %s\n", path);
14513 	else
14514 		printf("something: %s\n", path);
14515 
14516 	tm = localtime_r(&mtime, &mytm);
14517 	if (tm == NULL)
14518 		return NULL;
14519 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
14520 		return got_error(GOT_ERR_NO_SPACE);
14521 	printf("timestamp: %s\n", datebuf);
14522 
14523 	if (blob_id) {
14524 		err = got_object_id_str(&id_str, blob_id);
14525 		if (err)
14526 			return err;
14527 		printf("based on blob: %s\n", id_str);
14528 		free(id_str);
14529 	}
14530 
14531 	if (staged_blob_id) {
14532 		err = got_object_id_str(&id_str, staged_blob_id);
14533 		if (err)
14534 			return err;
14535 		printf("based on staged blob: %s\n", id_str);
14536 		free(id_str);
14537 	}
14538 
14539 	if (commit_id) {
14540 		err = got_object_id_str(&id_str, commit_id);
14541 		if (err)
14542 			return err;
14543 		printf("based on commit: %s\n", id_str);
14544 		free(id_str);
14545 	}
14546 
14547 	return NULL;
14548 }
14549 
14550 static const struct got_error *
14551 cmd_info(int argc, char *argv[])
14552 {
14553 	const struct got_error *error = NULL;
14554 	struct got_worktree *worktree = NULL;
14555 	char *cwd = NULL, *id_str = NULL;
14556 	struct got_pathlist_head paths;
14557 	char *uuidstr = NULL;
14558 	int ch, show_files = 0;
14559 
14560 	TAILQ_INIT(&paths);
14561 
14562 #ifndef PROFILE
14563 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
14564 	    NULL) == -1)
14565 		err(1, "pledge");
14566 #endif
14567 
14568 	while ((ch = getopt(argc, argv, "")) != -1) {
14569 		switch (ch) {
14570 		default:
14571 			usage_info();
14572 			/* NOTREACHED */
14573 		}
14574 	}
14575 
14576 	argc -= optind;
14577 	argv += optind;
14578 
14579 	cwd = getcwd(NULL, 0);
14580 	if (cwd == NULL) {
14581 		error = got_error_from_errno("getcwd");
14582 		goto done;
14583 	}
14584 
14585 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
14586 	if (error) {
14587 		if (error->code == GOT_ERR_NOT_WORKTREE)
14588 			error = wrap_not_worktree_error(error, "info", cwd);
14589 		goto done;
14590 	}
14591 
14592 #ifndef PROFILE
14593 	/* Remove "wpath cpath proc exec sendfd" promises. */
14594 	if (pledge("stdio rpath flock unveil", NULL) == -1)
14595 		err(1, "pledge");
14596 #endif
14597 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
14598 	if (error)
14599 		goto done;
14600 
14601 	if (argc >= 1) {
14602 		error = get_worktree_paths_from_argv(&paths, argc, argv,
14603 		    worktree);
14604 		if (error)
14605 			goto done;
14606 		show_files = 1;
14607 	}
14608 
14609 	error = got_object_id_str(&id_str,
14610 	    got_worktree_get_base_commit_id(worktree));
14611 	if (error)
14612 		goto done;
14613 
14614 	error = got_worktree_get_uuid(&uuidstr, worktree);
14615 	if (error)
14616 		goto done;
14617 
14618 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
14619 	printf("work tree base commit: %s\n", id_str);
14620 	printf("work tree path prefix: %s\n",
14621 	    got_worktree_get_path_prefix(worktree));
14622 	printf("work tree branch reference: %s\n",
14623 	    got_worktree_get_head_ref_name(worktree));
14624 	printf("work tree UUID: %s\n", uuidstr);
14625 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
14626 
14627 	if (show_files) {
14628 		struct got_pathlist_entry *pe;
14629 		TAILQ_FOREACH(pe, &paths, entry) {
14630 			if (pe->path_len == 0)
14631 				continue;
14632 			/*
14633 			 * Assume this path will fail. This will be corrected
14634 			 * in print_path_info() in case the path does suceeed.
14635 			 */
14636 			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
14637 		}
14638 		error = got_worktree_path_info(worktree, &paths,
14639 		    print_path_info, &paths, check_cancelled, NULL);
14640 		if (error)
14641 			goto done;
14642 		TAILQ_FOREACH(pe, &paths, entry) {
14643 			if (pe->data != NULL) {
14644 				const struct got_error *perr;
14645 
14646 				perr = pe->data;
14647 				error = got_error_fmt(perr->code, "%s",
14648 				    pe->path);
14649 				break;
14650 			}
14651 		}
14652 	}
14653 done:
14654 	if (worktree)
14655 		got_worktree_close(worktree);
14656 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
14657 	free(cwd);
14658 	free(id_str);
14659 	free(uuidstr);
14660 	return error;
14661 }