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 "got_compat.h"
20 
21 #include <sys/queue.h>
22 #include <sys/time.h>
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <sys/wait.h>
26 
27 #include <err.h>
28 #include <errno.h>
29 #include <fcntl.h>
30 #include <limits.h>
31 #include <locale.h>
32 #include <ctype.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 
44 #include "got_version.h"
45 #include "got_error.h"
46 #include "got_object.h"
47 #include "got_reference.h"
48 #include "got_repository.h"
49 #include "got_path.h"
50 #include "got_cancel.h"
51 #include "got_worktree.h"
52 #include "got_diff.h"
53 #include "got_commit_graph.h"
54 #include "got_fetch.h"
55 #include "got_send.h"
56 #include "got_blame.h"
57 #include "got_privsep.h"
58 #include "got_opentemp.h"
59 #include "got_gotconfig.h"
60 #include "got_dial.h"
61 #include "got_patch.h"
62 #include "got_sigs.h"
63 #include "got_date.h"
64 
65 #ifndef nitems
66 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
67 #endif
68 
69 static volatile sig_atomic_t sigint_received;
70 static volatile sig_atomic_t sigpipe_received;
71 
72 static void
73 catch_sigint(int signo)
74 {
75 	sigint_received = 1;
76 }
77 
78 static void
79 catch_sigpipe(int signo)
80 {
81 	sigpipe_received = 1;
82 }
83 
84 
85 struct got_cmd {
86 	const char	*cmd_name;
87 	const struct got_error *(*cmd_main)(int, char *[]);
88 	void		(*cmd_usage)(void);
89 	const char	*cmd_alias;
90 };
91 
92 __dead static void	usage(int, int);
93 __dead static void	usage_import(void);
94 __dead static void	usage_clone(void);
95 __dead static void	usage_fetch(void);
96 __dead static void	usage_checkout(void);
97 __dead static void	usage_update(void);
98 __dead static void	usage_log(void);
99 __dead static void	usage_diff(void);
100 __dead static void	usage_blame(void);
101 __dead static void	usage_tree(void);
102 __dead static void	usage_status(void);
103 __dead static void	usage_ref(void);
104 __dead static void	usage_branch(void);
105 __dead static void	usage_tag(void);
106 __dead static void	usage_add(void);
107 __dead static void	usage_remove(void);
108 __dead static void	usage_patch(void);
109 __dead static void	usage_revert(void);
110 __dead static void	usage_commit(void);
111 __dead static void	usage_send(void);
112 __dead static void	usage_cherrypick(void);
113 __dead static void	usage_backout(void);
114 __dead static void	usage_rebase(void);
115 __dead static void	usage_histedit(void);
116 __dead static void	usage_integrate(void);
117 __dead static void	usage_merge(void);
118 __dead static void	usage_stage(void);
119 __dead static void	usage_unstage(void);
120 __dead static void	usage_cat(void);
121 __dead static void	usage_info(void);
122 
123 static const struct got_error*		cmd_import(int, char *[]);
124 static const struct got_error*		cmd_clone(int, char *[]);
125 static const struct got_error*		cmd_fetch(int, char *[]);
126 static const struct got_error*		cmd_checkout(int, char *[]);
127 static const struct got_error*		cmd_update(int, char *[]);
128 static const struct got_error*		cmd_log(int, char *[]);
129 static const struct got_error*		cmd_diff(int, char *[]);
130 static const struct got_error*		cmd_blame(int, char *[]);
131 static const struct got_error*		cmd_tree(int, char *[]);
132 static const struct got_error*		cmd_status(int, char *[]);
133 static const struct got_error*		cmd_ref(int, char *[]);
134 static const struct got_error*		cmd_branch(int, char *[]);
135 static const struct got_error*		cmd_tag(int, char *[]);
136 static const struct got_error*		cmd_add(int, char *[]);
137 static const struct got_error*		cmd_remove(int, char *[]);
138 static const struct got_error*		cmd_patch(int, char *[]);
139 static const struct got_error*		cmd_revert(int, char *[]);
140 static const struct got_error*		cmd_commit(int, char *[]);
141 static const struct got_error*		cmd_send(int, char *[]);
142 static const struct got_error*		cmd_cherrypick(int, char *[]);
143 static const struct got_error*		cmd_backout(int, char *[]);
144 static const struct got_error*		cmd_rebase(int, char *[]);
145 static const struct got_error*		cmd_histedit(int, char *[]);
146 static const struct got_error*		cmd_integrate(int, char *[]);
147 static const struct got_error*		cmd_merge(int, char *[]);
148 static const struct got_error*		cmd_stage(int, char *[]);
149 static const struct got_error*		cmd_unstage(int, char *[]);
150 static const struct got_error*		cmd_cat(int, char *[]);
151 static const struct got_error*		cmd_info(int, char *[]);
152 
153 static const struct got_cmd got_commands[] = {
154 	{ "import",	cmd_import,	usage_import,	"im" },
155 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
156 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
157 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
158 	{ "update",	cmd_update,	usage_update,	"up" },
159 	{ "log",	cmd_log,	usage_log,	"" },
160 	{ "diff",	cmd_diff,	usage_diff,	"di" },
161 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
162 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
163 	{ "status",	cmd_status,	usage_status,	"st" },
164 	{ "ref",	cmd_ref,	usage_ref,	"" },
165 	{ "branch",	cmd_branch,	usage_branch,	"br" },
166 	{ "tag",	cmd_tag,	usage_tag,	"" },
167 	{ "add",	cmd_add,	usage_add,	"" },
168 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
169 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
170 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
171 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
172 	{ "send",	cmd_send,	usage_send,	"se" },
173 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
174 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
175 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
176 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
177 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
178 	{ "merge",	cmd_merge,	usage_merge,	"mg" },
179 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
180 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
181 	{ "cat",	cmd_cat,	usage_cat,	"" },
182 	{ "info",	cmd_info,	usage_info,	"" },
183 };
184 
185 static void
186 list_commands(FILE *fp)
187 {
188 	size_t i;
189 
190 	fprintf(fp, "commands:");
191 	for (i = 0; i < nitems(got_commands); i++) {
192 		const struct got_cmd *cmd = &got_commands[i];
193 		fprintf(fp, " %s", cmd->cmd_name);
194 	}
195 	fputc('\n', fp);
196 }
197 
198 __dead static void
199 option_conflict(char a, char b)
200 {
201 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
202 }
203 
204 int
205 main(int argc, char *argv[])
206 {
207 	const struct got_cmd *cmd;
208 	size_t i;
209 	int ch;
210 	int hflag = 0, Vflag = 0;
211 	static const struct option longopts[] = {
212 	    { "version", no_argument, NULL, 'V' },
213 	    { NULL, 0, NULL, 0 }
214 	};
215 
216 	setlocale(LC_CTYPE, "");
217 
218 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
219 		switch (ch) {
220 		case 'h':
221 			hflag = 1;
222 			break;
223 		case 'V':
224 			Vflag = 1;
225 			break;
226 		default:
227 			usage(hflag, 1);
228 			/* NOTREACHED */
229 		}
230 	}
231 
232 	argc -= optind;
233 	argv += optind;
234 	optind = 1;
235 	optreset = 1;
236 
237 	if (Vflag) {
238 		got_version_print_str();
239 		return 0;
240 	}
241 
242 	if (argc <= 0)
243 		usage(hflag, hflag ? 0 : 1);
244 
245 	signal(SIGINT, catch_sigint);
246 	signal(SIGPIPE, catch_sigpipe);
247 
248 	for (i = 0; i < nitems(got_commands); i++) {
249 		const struct got_error *error;
250 
251 		cmd = &got_commands[i];
252 
253 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
254 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
255 			continue;
256 
257 		if (hflag)
258 			cmd->cmd_usage();
259 
260 		error = cmd->cmd_main(argc, argv);
261 		if (error && error->code != GOT_ERR_CANCELLED &&
262 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
263 		    !(sigpipe_received &&
264 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
265 		    !(sigint_received &&
266 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
267 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
268 			return 1;
269 		}
270 
271 		return 0;
272 	}
273 
274 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
275 	list_commands(stderr);
276 	return 1;
277 }
278 
279 __dead static void
280 usage(int hflag, int status)
281 {
282 	FILE *fp = (status == 0) ? stdout : stderr;
283 
284 	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
285 	    getprogname());
286 	if (hflag)
287 		list_commands(fp);
288 	exit(status);
289 }
290 
291 static const struct got_error *
292 get_editor(char **abspath)
293 {
294 	const struct got_error *err = NULL;
295 	const char *editor;
296 
297 	*abspath = NULL;
298 
299 	editor = getenv("VISUAL");
300 	if (editor == NULL)
301 		editor = getenv("EDITOR");
302 
303 	if (editor) {
304 		err = got_path_find_prog(abspath, editor);
305 		if (err)
306 			return err;
307 	}
308 
309 	if (*abspath == NULL) {
310 		*abspath = strdup("/usr/bin/vi");
311 		if (*abspath == NULL)
312 			return got_error_from_errno("strdup");
313 	}
314 
315 	return NULL;
316 }
317 
318 static const struct got_error *
319 apply_unveil(const char *repo_path, int repo_read_only,
320     const char *worktree_path)
321 {
322 	const struct got_error *err;
323 
324 #ifdef PROFILE
325 	if (unveil("gmon.out", "rwc") != 0)
326 		return got_error_from_errno2("unveil", "gmon.out");
327 #endif
328 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
329 		return got_error_from_errno2("unveil", repo_path);
330 
331 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
332 		return got_error_from_errno2("unveil", worktree_path);
333 
334 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
335 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
336 
337 	err = got_privsep_unveil_exec_helpers();
338 	if (err != NULL)
339 		return err;
340 
341 	if (unveil(NULL, NULL) != 0)
342 		return got_error_from_errno("unveil");
343 
344 	return NULL;
345 }
346 
347 __dead static void
348 usage_import(void)
349 {
350 	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
351 	    "[-r repository-path] directory\n", getprogname());
352 	exit(1);
353 }
354 
355 static int
356 spawn_editor(const char *editor, const char *file)
357 {
358 	pid_t pid;
359 	sig_t sighup, sigint, sigquit;
360 	int st = -1;
361 
362 	sighup = signal(SIGHUP, SIG_IGN);
363 	sigint = signal(SIGINT, SIG_IGN);
364 	sigquit = signal(SIGQUIT, SIG_IGN);
365 
366 	switch (pid = fork()) {
367 	case -1:
368 		goto doneediting;
369 	case 0:
370 		execl(editor, editor, file, (char *)NULL);
371 		_exit(127);
372 	}
373 
374 	while (waitpid(pid, &st, 0) == -1)
375 		if (errno != EINTR)
376 			break;
377 
378 doneediting:
379 	(void)signal(SIGHUP, sighup);
380 	(void)signal(SIGINT, sigint);
381 	(void)signal(SIGQUIT, sigquit);
382 
383 	if (!WIFEXITED(st)) {
384 		errno = EINTR;
385 		return -1;
386 	}
387 
388 	return WEXITSTATUS(st);
389 }
390 
391 static const struct got_error *
392 read_logmsg(char **logmsg, size_t *len, FILE *fp, size_t filesize)
393 {
394 	const struct got_error *err = NULL;
395 	char *line = NULL;
396 	size_t linesize = 0;
397 
398 	*logmsg = NULL;
399 	*len = 0;
400 
401 	if (fseeko(fp, 0L, SEEK_SET) == -1)
402 		return got_error_from_errno("fseeko");
403 
404 	*logmsg = malloc(filesize + 1);
405 	if (*logmsg == NULL)
406 		return got_error_from_errno("malloc");
407 	(*logmsg)[0] = '\0';
408 
409 	while (getline(&line, &linesize, fp) != -1) {
410 		if (line[0] == '#' || (*len == 0 && line[0] == '\n'))
411 			continue; /* remove comments and leading empty lines */
412 		*len = strlcat(*logmsg, line, filesize + 1);
413 		if (*len >= filesize + 1) {
414 			err = got_error(GOT_ERR_NO_SPACE);
415 			goto done;
416 		}
417 	}
418 	if (ferror(fp)) {
419 		err = got_ferror(fp, GOT_ERR_IO);
420 		goto done;
421 	}
422 
423 	while (*len > 0 && (*logmsg)[*len - 1] == '\n') {
424 		(*logmsg)[*len - 1] = '\0';
425 		(*len)--;
426 	}
427 done:
428 	free(line);
429 	if (err) {
430 		free(*logmsg);
431 		*logmsg = NULL;
432 		*len = 0;
433 	}
434 	return err;
435 }
436 
437 static const struct got_error *
438 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
439     const char *initial_content, size_t initial_content_len,
440     int require_modification)
441 {
442 	const struct got_error *err = NULL;
443 	struct stat st, st2;
444 	FILE *fp = NULL;
445 	size_t logmsg_len;
446 
447 	*logmsg = NULL;
448 
449 	if (stat(logmsg_path, &st) == -1)
450 		return got_error_from_errno2("stat", logmsg_path);
451 
452 	if (spawn_editor(editor, logmsg_path) == -1)
453 		return got_error_from_errno("failed spawning editor");
454 
455 	if (require_modification) {
456 		struct timespec timeout;
457 
458 		timeout.tv_sec = 0;
459 		timeout.tv_nsec = 1;
460 		nanosleep(&timeout,  NULL);
461 	}
462 
463 	if (stat(logmsg_path, &st2) == -1)
464 		return got_error_from_errno("stat");
465 
466 	if (require_modification && st.st_size == st2.st_size &&
467 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==))
468 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
469 		    "no changes made to commit message, aborting");
470 
471 	fp = fopen(logmsg_path, "re");
472 	if (fp == NULL) {
473 		err = got_error_from_errno("fopen");
474 		goto done;
475 	}
476 
477 	/* strip comments and leading/trailing newlines */
478 	err = read_logmsg(logmsg, &logmsg_len, fp, st2.st_size);
479 	if (err)
480 		goto done;
481 	if (logmsg_len == 0) {
482 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
483 		    "commit message cannot be empty, aborting");
484 		goto done;
485 	}
486 done:
487 	if (fp && fclose(fp) == EOF && err == NULL)
488 		err = got_error_from_errno("fclose");
489 	if (err) {
490 		free(*logmsg);
491 		*logmsg = NULL;
492 	}
493 	return err;
494 }
495 
496 static const struct got_error *
497 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
498     const char *path_dir, const char *branch_name)
499 {
500 	char *initial_content = NULL;
501 	const struct got_error *err = NULL;
502 	int initial_content_len;
503 	int fd = -1;
504 
505 	initial_content_len = asprintf(&initial_content,
506 	    "\n# %s to be imported to branch %s\n", path_dir,
507 	    branch_name);
508 	if (initial_content_len == -1)
509 		return got_error_from_errno("asprintf");
510 
511 	err = got_opentemp_named_fd(logmsg_path, &fd,
512 	    GOT_TMPDIR_STR "/got-importmsg", "");
513 	if (err)
514 		goto done;
515 
516 	if (write(fd, initial_content, initial_content_len) == -1) {
517 		err = got_error_from_errno2("write", *logmsg_path);
518 		goto done;
519 	}
520 
521 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
522 	    initial_content_len, 1);
523 done:
524 	if (fd != -1 && close(fd) == -1 && err == NULL)
525 		err = got_error_from_errno2("close", *logmsg_path);
526 	free(initial_content);
527 	if (err) {
528 		free(*logmsg_path);
529 		*logmsg_path = NULL;
530 	}
531 	return err;
532 }
533 
534 static const struct got_error *
535 import_progress(void *arg, const char *path)
536 {
537 	printf("A  %s\n", path);
538 	return NULL;
539 }
540 
541 static const struct got_error *
542 valid_author(const char *author)
543 {
544 	const char *email = author;
545 
546 	/*
547 	 * Git' expects the author (or committer) to be in the form
548 	 * "name <email>", which are mostly free form (see the
549 	 * "committer" description in git-fast-import(1)).  We're only
550 	 * doing this to avoid git's object parser breaking on commits
551 	 * we create.
552 	 */
553 
554 	while (*author && *author != '\n' && *author != '<' && *author != '>')
555 		author++;
556 	if (author != email && *author == '<' && *(author - 1) != ' ')
557 		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
558 		    "between author name and email required", email);
559 	if (*author++ != '<')
560 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
561 	while (*author && *author != '\n' && *author != '<' && *author != '>')
562 		author++;
563 	if (strcmp(author, ">") != 0)
564 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
565 	return NULL;
566 }
567 
568 static const struct got_error *
569 get_author(char **author, struct got_repository *repo,
570     struct got_worktree *worktree)
571 {
572 	const struct got_error *err = NULL;
573 	const char *got_author = NULL, *name, *email;
574 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
575 
576 	*author = NULL;
577 
578 	if (worktree)
579 		worktree_conf = got_worktree_get_gotconfig(worktree);
580 	repo_conf = got_repo_get_gotconfig(repo);
581 
582 	/*
583 	 * Priority of potential author information sources, from most
584 	 * significant to least significant:
585 	 * 1) work tree's .got/got.conf file
586 	 * 2) repository's got.conf file
587 	 * 3) repository's git config file
588 	 * 4) environment variables
589 	 * 5) global git config files (in user's home directory or /etc)
590 	 */
591 
592 	if (worktree_conf)
593 		got_author = got_gotconfig_get_author(worktree_conf);
594 	if (got_author == NULL)
595 		got_author = got_gotconfig_get_author(repo_conf);
596 	if (got_author == NULL) {
597 		name = got_repo_get_gitconfig_author_name(repo);
598 		email = got_repo_get_gitconfig_author_email(repo);
599 		if (name && email) {
600 			if (asprintf(author, "%s <%s>", name, email) == -1)
601 				return got_error_from_errno("asprintf");
602 			return NULL;
603 		}
604 
605 		got_author = getenv("GOT_AUTHOR");
606 		if (got_author == NULL) {
607 			name = got_repo_get_global_gitconfig_author_name(repo);
608 			email = got_repo_get_global_gitconfig_author_email(
609 			    repo);
610 			if (name && email) {
611 				if (asprintf(author, "%s <%s>", name, email)
612 				    == -1)
613 					return got_error_from_errno("asprintf");
614 				return NULL;
615 			}
616 			/* TODO: Look up user in password database? */
617 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
618 		}
619 	}
620 
621 	*author = strdup(got_author);
622 	if (*author == NULL)
623 		return got_error_from_errno("strdup");
624 
625 	err = valid_author(*author);
626 	if (err) {
627 		free(*author);
628 		*author = NULL;
629 	}
630 	return err;
631 }
632 
633 static const struct got_error *
634 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
635     struct got_worktree *worktree)
636 {
637 	const char *got_allowed_signers = NULL;
638 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
639 
640 	*allowed_signers = NULL;
641 
642 	if (worktree)
643 		worktree_conf = got_worktree_get_gotconfig(worktree);
644 	repo_conf = got_repo_get_gotconfig(repo);
645 
646 	/*
647 	 * Priority of potential author information sources, from most
648 	 * significant to least significant:
649 	 * 1) work tree's .got/got.conf file
650 	 * 2) repository's got.conf file
651 	 */
652 
653 	if (worktree_conf)
654 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
655 		    worktree_conf);
656 	if (got_allowed_signers == NULL)
657 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
658 		    repo_conf);
659 
660 	if (got_allowed_signers) {
661 		*allowed_signers = strdup(got_allowed_signers);
662 		if (*allowed_signers == NULL)
663 			return got_error_from_errno("strdup");
664 	}
665 	return NULL;
666 }
667 
668 static const struct got_error *
669 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
670     struct got_worktree *worktree)
671 {
672 	const char *got_revoked_signers = NULL;
673 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
674 
675 	*revoked_signers = NULL;
676 
677 	if (worktree)
678 		worktree_conf = got_worktree_get_gotconfig(worktree);
679 	repo_conf = got_repo_get_gotconfig(repo);
680 
681 	/*
682 	 * Priority of potential author information sources, from most
683 	 * significant to least significant:
684 	 * 1) work tree's .got/got.conf file
685 	 * 2) repository's got.conf file
686 	 */
687 
688 	if (worktree_conf)
689 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
690 		    worktree_conf);
691 	if (got_revoked_signers == NULL)
692 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
693 		    repo_conf);
694 
695 	if (got_revoked_signers) {
696 		*revoked_signers = strdup(got_revoked_signers);
697 		if (*revoked_signers == NULL)
698 			return got_error_from_errno("strdup");
699 	}
700 	return NULL;
701 }
702 
703 static const char *
704 get_signer_id(struct got_repository *repo, struct got_worktree *worktree)
705 {
706 	const char *got_signer_id = NULL;
707 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
708 
709 	if (worktree)
710 		worktree_conf = got_worktree_get_gotconfig(worktree);
711 	repo_conf = got_repo_get_gotconfig(repo);
712 
713 	/*
714 	 * Priority of potential author information sources, from most
715 	 * significant to least significant:
716 	 * 1) work tree's .got/got.conf file
717 	 * 2) repository's got.conf file
718 	 */
719 
720 	if (worktree_conf)
721 		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
722 	if (got_signer_id == NULL)
723 		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
724 
725 	return got_signer_id;
726 }
727 
728 static const struct got_error *
729 get_gitconfig_path(char **gitconfig_path)
730 {
731 	const char *homedir = getenv("HOME");
732 
733 	*gitconfig_path = NULL;
734 	if (homedir) {
735 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
736 			return got_error_from_errno("asprintf");
737 
738 	}
739 	return NULL;
740 }
741 
742 static const struct got_error *
743 cmd_import(int argc, char *argv[])
744 {
745 	const struct got_error *error = NULL;
746 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
747 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
748 	const char *branch_name = NULL;
749 	char *id_str = NULL, *logmsg_path = NULL;
750 	char refname[PATH_MAX] = "refs/heads/";
751 	struct got_repository *repo = NULL;
752 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
753 	struct got_object_id *new_commit_id = NULL;
754 	int ch, n = 0;
755 	struct got_pathlist_head ignores;
756 	struct got_pathlist_entry *pe;
757 	int preserve_logmsg = 0;
758 	int *pack_fds = NULL;
759 
760 	TAILQ_INIT(&ignores);
761 
762 #ifndef PROFILE
763 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
764 	    "unveil",
765 	    NULL) == -1)
766 		err(1, "pledge");
767 #endif
768 
769 	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
770 		switch (ch) {
771 		case 'b':
772 			branch_name = optarg;
773 			break;
774 		case 'I':
775 			if (optarg[0] == '\0')
776 				break;
777 			error = got_pathlist_insert(&pe, &ignores, optarg,
778 			    NULL);
779 			if (error)
780 				goto done;
781 			break;
782 		case 'm':
783 			logmsg = strdup(optarg);
784 			if (logmsg == NULL) {
785 				error = got_error_from_errno("strdup");
786 				goto done;
787 			}
788 			break;
789 		case 'r':
790 			repo_path = realpath(optarg, NULL);
791 			if (repo_path == NULL) {
792 				error = got_error_from_errno2("realpath",
793 				    optarg);
794 				goto done;
795 			}
796 			break;
797 		default:
798 			usage_import();
799 			/* NOTREACHED */
800 		}
801 	}
802 
803 	argc -= optind;
804 	argv += optind;
805 
806 	if (argc != 1)
807 		usage_import();
808 
809 	if (repo_path == NULL) {
810 		repo_path = getcwd(NULL, 0);
811 		if (repo_path == NULL)
812 			return got_error_from_errno("getcwd");
813 	}
814 	got_path_strip_trailing_slashes(repo_path);
815 	error = get_gitconfig_path(&gitconfig_path);
816 	if (error)
817 		goto done;
818 	error = got_repo_pack_fds_open(&pack_fds);
819 	if (error != NULL)
820 		goto done;
821 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
822 	if (error)
823 		goto done;
824 
825 	error = get_author(&author, repo, NULL);
826 	if (error)
827 		return error;
828 
829 	/*
830 	 * Don't let the user create a branch name with a leading '-'.
831 	 * While technically a valid reference name, this case is usually
832 	 * an unintended typo.
833 	 */
834 	if (branch_name && branch_name[0] == '-')
835 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
836 
837 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
838 	if (error && error->code != GOT_ERR_NOT_REF)
839 		goto done;
840 
841 	if (branch_name)
842 		n = strlcat(refname, branch_name, sizeof(refname));
843 	else if (head_ref && got_ref_is_symbolic(head_ref))
844 		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
845 		    sizeof(refname));
846 	else
847 		n = strlcat(refname, "main", sizeof(refname));
848 	if (n >= sizeof(refname)) {
849 		error = got_error(GOT_ERR_NO_SPACE);
850 		goto done;
851 	}
852 
853 	error = got_ref_open(&branch_ref, repo, refname, 0);
854 	if (error) {
855 		if (error->code != GOT_ERR_NOT_REF)
856 			goto done;
857 	} else {
858 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
859 		    "import target branch already exists");
860 		goto done;
861 	}
862 
863 	path_dir = realpath(argv[0], NULL);
864 	if (path_dir == NULL) {
865 		error = got_error_from_errno2("realpath", argv[0]);
866 		goto done;
867 	}
868 	got_path_strip_trailing_slashes(path_dir);
869 
870 	/*
871 	 * unveil(2) traverses exec(2); if an editor is used we have
872 	 * to apply unveil after the log message has been written.
873 	 */
874 	if (logmsg == NULL || strlen(logmsg) == 0) {
875 		error = get_editor(&editor);
876 		if (error)
877 			goto done;
878 		free(logmsg);
879 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
880 		    path_dir, refname);
881 		if (error) {
882 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
883 			    logmsg_path != NULL)
884 				preserve_logmsg = 1;
885 			goto done;
886 		}
887 	}
888 
889 	if (unveil(path_dir, "r") != 0) {
890 		error = got_error_from_errno2("unveil", path_dir);
891 		if (logmsg_path)
892 			preserve_logmsg = 1;
893 		goto done;
894 	}
895 
896 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
897 	if (error) {
898 		if (logmsg_path)
899 			preserve_logmsg = 1;
900 		goto done;
901 	}
902 
903 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
904 	    author, &ignores, repo, import_progress, NULL);
905 	if (error) {
906 		if (logmsg_path)
907 			preserve_logmsg = 1;
908 		goto done;
909 	}
910 
911 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
912 	if (error) {
913 		if (logmsg_path)
914 			preserve_logmsg = 1;
915 		goto done;
916 	}
917 
918 	error = got_ref_write(branch_ref, repo);
919 	if (error) {
920 		if (logmsg_path)
921 			preserve_logmsg = 1;
922 		goto done;
923 	}
924 
925 	error = got_object_id_str(&id_str, new_commit_id);
926 	if (error) {
927 		if (logmsg_path)
928 			preserve_logmsg = 1;
929 		goto done;
930 	}
931 
932 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
933 	if (error) {
934 		if (error->code != GOT_ERR_NOT_REF) {
935 			if (logmsg_path)
936 				preserve_logmsg = 1;
937 			goto done;
938 		}
939 
940 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
941 		    branch_ref);
942 		if (error) {
943 			if (logmsg_path)
944 				preserve_logmsg = 1;
945 			goto done;
946 		}
947 
948 		error = got_ref_write(head_ref, repo);
949 		if (error) {
950 			if (logmsg_path)
951 				preserve_logmsg = 1;
952 			goto done;
953 		}
954 	}
955 
956 	printf("Created branch %s with commit %s\n",
957 	    got_ref_get_name(branch_ref), id_str);
958 done:
959 	if (pack_fds) {
960 		const struct got_error *pack_err =
961 		    got_repo_pack_fds_close(pack_fds);
962 		if (error == NULL)
963 			error = pack_err;
964 	}
965 	if (preserve_logmsg) {
966 		fprintf(stderr, "%s: log message preserved in %s\n",
967 		    getprogname(), logmsg_path);
968 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
969 		error = got_error_from_errno2("unlink", logmsg_path);
970 	free(logmsg);
971 	free(logmsg_path);
972 	free(repo_path);
973 	free(editor);
974 	free(new_commit_id);
975 	free(id_str);
976 	free(author);
977 	free(gitconfig_path);
978 	if (branch_ref)
979 		got_ref_close(branch_ref);
980 	if (head_ref)
981 		got_ref_close(head_ref);
982 	return error;
983 }
984 
985 __dead static void
986 usage_clone(void)
987 {
988 	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
989 	    "repository-URL [directory]\n", getprogname());
990 	exit(1);
991 }
992 
993 struct got_fetch_progress_arg {
994 	char last_scaled_size[FMT_SCALED_STRSIZE];
995 	int last_p_indexed;
996 	int last_p_resolved;
997 	int verbosity;
998 
999 	struct got_repository *repo;
1000 
1001 	int create_configs;
1002 	int configs_created;
1003 	struct {
1004 		struct got_pathlist_head *symrefs;
1005 		struct got_pathlist_head *wanted_branches;
1006 		struct got_pathlist_head *wanted_refs;
1007 		const char *proto;
1008 		const char *host;
1009 		const char *port;
1010 		const char *remote_repo_path;
1011 		const char *git_url;
1012 		int fetch_all_branches;
1013 		int mirror_references;
1014 	} config_info;
1015 };
1016 
1017 /* XXX forward declaration */
1018 static const struct got_error *
1019 create_config_files(const char *proto, const char *host, const char *port,
1020     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1021     int mirror_references, struct got_pathlist_head *symrefs,
1022     struct got_pathlist_head *wanted_branches,
1023     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1024 
1025 static const struct got_error *
1026 fetch_progress(void *arg, const char *message, off_t packfile_size,
1027     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1028 {
1029 	const struct got_error *err = NULL;
1030 	struct got_fetch_progress_arg *a = arg;
1031 	char scaled_size[FMT_SCALED_STRSIZE];
1032 	int p_indexed, p_resolved;
1033 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1034 
1035 	/*
1036 	 * In order to allow a failed clone to be resumed with 'got fetch'
1037 	 * we try to create configuration files as soon as possible.
1038 	 * Once the server has sent information about its default branch
1039 	 * we have all required information.
1040 	 */
1041 	if (a->create_configs && !a->configs_created &&
1042 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1043 		err = create_config_files(a->config_info.proto,
1044 		    a->config_info.host, a->config_info.port,
1045 		    a->config_info.remote_repo_path,
1046 		    a->config_info.git_url,
1047 		    a->config_info.fetch_all_branches,
1048 		    a->config_info.mirror_references,
1049 		    a->config_info.symrefs,
1050 		    a->config_info.wanted_branches,
1051 		    a->config_info.wanted_refs, a->repo);
1052 		if (err)
1053 			return err;
1054 		a->configs_created = 1;
1055 	}
1056 
1057 	if (a->verbosity < 0)
1058 		return NULL;
1059 
1060 	if (message && message[0] != '\0') {
1061 		printf("\rserver: %s", message);
1062 		fflush(stdout);
1063 		return NULL;
1064 	}
1065 
1066 	if (packfile_size > 0 || nobj_indexed > 0) {
1067 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1068 		    (a->last_scaled_size[0] == '\0' ||
1069 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1070 			print_size = 1;
1071 			if (strlcpy(a->last_scaled_size, scaled_size,
1072 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1073 				return got_error(GOT_ERR_NO_SPACE);
1074 		}
1075 		if (nobj_indexed > 0) {
1076 			p_indexed = (nobj_indexed * 100) / nobj_total;
1077 			if (p_indexed != a->last_p_indexed) {
1078 				a->last_p_indexed = p_indexed;
1079 				print_indexed = 1;
1080 				print_size = 1;
1081 			}
1082 		}
1083 		if (nobj_resolved > 0) {
1084 			p_resolved = (nobj_resolved * 100) /
1085 			    (nobj_total - nobj_loose);
1086 			if (p_resolved != a->last_p_resolved) {
1087 				a->last_p_resolved = p_resolved;
1088 				print_resolved = 1;
1089 				print_indexed = 1;
1090 				print_size = 1;
1091 			}
1092 		}
1093 
1094 	}
1095 	if (print_size || print_indexed || print_resolved)
1096 		printf("\r");
1097 	if (print_size)
1098 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1099 	if (print_indexed)
1100 		printf("; indexing %d%%", p_indexed);
1101 	if (print_resolved)
1102 		printf("; resolving deltas %d%%", p_resolved);
1103 	if (print_size || print_indexed || print_resolved)
1104 		fflush(stdout);
1105 
1106 	return NULL;
1107 }
1108 
1109 static const struct got_error *
1110 create_symref(const char *refname, struct got_reference *target_ref,
1111     int verbosity, struct got_repository *repo)
1112 {
1113 	const struct got_error *err;
1114 	struct got_reference *head_symref;
1115 
1116 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1117 	if (err)
1118 		return err;
1119 
1120 	err = got_ref_write(head_symref, repo);
1121 	if (err == NULL && verbosity > 0) {
1122 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1123 		    got_ref_get_name(target_ref));
1124 	}
1125 	got_ref_close(head_symref);
1126 	return err;
1127 }
1128 
1129 static const struct got_error *
1130 list_remote_refs(struct got_pathlist_head *symrefs,
1131     struct got_pathlist_head *refs)
1132 {
1133 	const struct got_error *err;
1134 	struct got_pathlist_entry *pe;
1135 
1136 	TAILQ_FOREACH(pe, symrefs, entry) {
1137 		const char *refname = pe->path;
1138 		const char *targetref = pe->data;
1139 
1140 		printf("%s: %s\n", refname, targetref);
1141 	}
1142 
1143 	TAILQ_FOREACH(pe, refs, entry) {
1144 		const char *refname = pe->path;
1145 		struct got_object_id *id = pe->data;
1146 		char *id_str;
1147 
1148 		err = got_object_id_str(&id_str, id);
1149 		if (err)
1150 			return err;
1151 		printf("%s: %s\n", refname, id_str);
1152 		free(id_str);
1153 	}
1154 
1155 	return NULL;
1156 }
1157 
1158 static const struct got_error *
1159 create_ref(const char *refname, struct got_object_id *id,
1160     int verbosity, struct got_repository *repo)
1161 {
1162 	const struct got_error *err = NULL;
1163 	struct got_reference *ref;
1164 	char *id_str;
1165 
1166 	err = got_object_id_str(&id_str, id);
1167 	if (err)
1168 		return err;
1169 
1170 	err = got_ref_alloc(&ref, refname, id);
1171 	if (err)
1172 		goto done;
1173 
1174 	err = got_ref_write(ref, repo);
1175 	got_ref_close(ref);
1176 
1177 	if (err == NULL && verbosity >= 0)
1178 		printf("Created reference %s: %s\n", refname, id_str);
1179 done:
1180 	free(id_str);
1181 	return err;
1182 }
1183 
1184 static int
1185 match_wanted_ref(const char *refname, const char *wanted_ref)
1186 {
1187 	if (strncmp(refname, "refs/", 5) != 0)
1188 		return 0;
1189 	refname += 5;
1190 
1191 	/*
1192 	 * Prevent fetching of references that won't make any
1193 	 * sense outside of the remote repository's context.
1194 	 */
1195 	if (strncmp(refname, "got/", 4) == 0)
1196 		return 0;
1197 	if (strncmp(refname, "remotes/", 8) == 0)
1198 		return 0;
1199 
1200 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1201 		wanted_ref += 5;
1202 
1203 	/* Allow prefix match. */
1204 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1205 		return 1;
1206 
1207 	/* Allow exact match. */
1208 	return (strcmp(refname, wanted_ref) == 0);
1209 }
1210 
1211 static int
1212 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1213 {
1214 	struct got_pathlist_entry *pe;
1215 
1216 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1217 		if (match_wanted_ref(refname, pe->path))
1218 			return 1;
1219 	}
1220 
1221 	return 0;
1222 }
1223 
1224 static const struct got_error *
1225 create_wanted_ref(const char *refname, struct got_object_id *id,
1226     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1227 {
1228 	const struct got_error *err;
1229 	char *remote_refname;
1230 
1231 	if (strncmp("refs/", refname, 5) == 0)
1232 		refname += 5;
1233 
1234 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1235 	    remote_repo_name, refname) == -1)
1236 		return got_error_from_errno("asprintf");
1237 
1238 	err = create_ref(remote_refname, id, verbosity, repo);
1239 	free(remote_refname);
1240 	return err;
1241 }
1242 
1243 static const struct got_error *
1244 create_gotconfig(const char *proto, const char *host, const char *port,
1245     const char *remote_repo_path, const char *default_branch,
1246     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1247     struct got_pathlist_head *wanted_refs, int mirror_references,
1248     struct got_repository *repo)
1249 {
1250 	const struct got_error *err = NULL;
1251 	char *gotconfig_path = NULL;
1252 	char *gotconfig = NULL;
1253 	FILE *gotconfig_file = NULL;
1254 	const char *branchname = NULL;
1255 	char *branches = NULL, *refs = NULL;
1256 	ssize_t n;
1257 
1258 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1259 		struct got_pathlist_entry *pe;
1260 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1261 			char *s;
1262 			branchname = pe->path;
1263 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1264 				branchname += 11;
1265 			if (asprintf(&s, "%s\"%s\" ",
1266 			    branches ? branches : "", branchname) == -1) {
1267 				err = got_error_from_errno("asprintf");
1268 				goto done;
1269 			}
1270 			free(branches);
1271 			branches = s;
1272 		}
1273 	} else if (!fetch_all_branches && default_branch) {
1274 		branchname = default_branch;
1275 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1276 			branchname += 11;
1277 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1278 			err = got_error_from_errno("asprintf");
1279 			goto done;
1280 		}
1281 	}
1282 	if (!TAILQ_EMPTY(wanted_refs)) {
1283 		struct got_pathlist_entry *pe;
1284 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1285 			char *s;
1286 			const char *refname = pe->path;
1287 			if (strncmp(refname, "refs/", 5) == 0)
1288 				branchname += 5;
1289 			if (asprintf(&s, "%s\"%s\" ",
1290 			    refs ? refs : "", refname) == -1) {
1291 				err = got_error_from_errno("asprintf");
1292 				goto done;
1293 			}
1294 			free(refs);
1295 			refs = s;
1296 		}
1297 	}
1298 
1299 	/* Create got.conf(5). */
1300 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1301 	if (gotconfig_path == NULL) {
1302 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1303 		goto done;
1304 	}
1305 	gotconfig_file = fopen(gotconfig_path, "ae");
1306 	if (gotconfig_file == NULL) {
1307 		err = got_error_from_errno2("fopen", gotconfig_path);
1308 		goto done;
1309 	}
1310 	if (asprintf(&gotconfig,
1311 	    "remote \"%s\" {\n"
1312 	    "\tserver %s\n"
1313 	    "\tprotocol %s\n"
1314 	    "%s%s%s"
1315 	    "\trepository \"%s\"\n"
1316 	    "%s%s%s"
1317 	    "%s%s%s"
1318 	    "%s"
1319 	    "%s"
1320 	    "}\n",
1321 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1322 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1323 	    remote_repo_path, branches ? "\tbranch { " : "",
1324 	    branches ? branches : "", branches ? "}\n" : "",
1325 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
1326 	    mirror_references ? "\tmirror_references yes\n" : "",
1327 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1328 		err = got_error_from_errno("asprintf");
1329 		goto done;
1330 	}
1331 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1332 	if (n != strlen(gotconfig)) {
1333 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1334 		goto done;
1335 	}
1336 
1337 done:
1338 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1339 		err = got_error_from_errno2("fclose", gotconfig_path);
1340 	free(gotconfig_path);
1341 	free(branches);
1342 	return err;
1343 }
1344 
1345 static const struct got_error *
1346 create_gitconfig(const char *git_url, const char *default_branch,
1347     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1348     struct got_pathlist_head *wanted_refs, int mirror_references,
1349     struct got_repository *repo)
1350 {
1351 	const struct got_error *err = NULL;
1352 	char *gitconfig_path = NULL;
1353 	char *gitconfig = NULL;
1354 	FILE *gitconfig_file = NULL;
1355 	char *branches = NULL, *refs = NULL;
1356 	const char *branchname;
1357 	ssize_t n;
1358 
1359 	/* Create a config file Git can understand. */
1360 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1361 	if (gitconfig_path == NULL) {
1362 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1363 		goto done;
1364 	}
1365 	gitconfig_file = fopen(gitconfig_path, "ae");
1366 	if (gitconfig_file == NULL) {
1367 		err = got_error_from_errno2("fopen", gitconfig_path);
1368 		goto done;
1369 	}
1370 	if (fetch_all_branches) {
1371 		if (mirror_references) {
1372 			if (asprintf(&branches,
1373 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1374 				err = got_error_from_errno("asprintf");
1375 				goto done;
1376 			}
1377 		} else if (asprintf(&branches,
1378 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1379 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1380 			err = got_error_from_errno("asprintf");
1381 			goto done;
1382 		}
1383 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1384 		struct got_pathlist_entry *pe;
1385 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1386 			char *s;
1387 			branchname = pe->path;
1388 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1389 				branchname += 11;
1390 			if (mirror_references) {
1391 				if (asprintf(&s,
1392 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1393 				    branches ? branches : "",
1394 				    branchname, branchname) == -1) {
1395 					err = got_error_from_errno("asprintf");
1396 					goto done;
1397 				}
1398 			} else if (asprintf(&s,
1399 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1400 			    branches ? branches : "",
1401 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1402 			    branchname) == -1) {
1403 				err = got_error_from_errno("asprintf");
1404 				goto done;
1405 			}
1406 			free(branches);
1407 			branches = s;
1408 		}
1409 	} else {
1410 		/*
1411 		 * If the server specified a default branch, use just that one.
1412 		 * Otherwise fall back to fetching all branches on next fetch.
1413 		 */
1414 		if (default_branch) {
1415 			branchname = default_branch;
1416 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1417 				branchname += 11;
1418 		} else
1419 			branchname = "*"; /* fall back to all branches */
1420 		if (mirror_references) {
1421 			if (asprintf(&branches,
1422 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1423 			    branchname, branchname) == -1) {
1424 				err = got_error_from_errno("asprintf");
1425 				goto done;
1426 			}
1427 		} else if (asprintf(&branches,
1428 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1429 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1430 		    branchname) == -1) {
1431 			err = got_error_from_errno("asprintf");
1432 			goto done;
1433 		}
1434 	}
1435 	if (!TAILQ_EMPTY(wanted_refs)) {
1436 		struct got_pathlist_entry *pe;
1437 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1438 			char *s;
1439 			const char *refname = pe->path;
1440 			if (strncmp(refname, "refs/", 5) == 0)
1441 				refname += 5;
1442 			if (mirror_references) {
1443 				if (asprintf(&s,
1444 				    "%s\tfetch = refs/%s:refs/%s\n",
1445 				    refs ? refs : "", refname, refname) == -1) {
1446 					err = got_error_from_errno("asprintf");
1447 					goto done;
1448 				}
1449 			} else if (asprintf(&s,
1450 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1451 			    refs ? refs : "",
1452 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1453 			    refname) == -1) {
1454 				err = got_error_from_errno("asprintf");
1455 				goto done;
1456 			}
1457 			free(refs);
1458 			refs = s;
1459 		}
1460 	}
1461 
1462 	if (asprintf(&gitconfig,
1463 	    "[remote \"%s\"]\n"
1464 	    "\turl = %s\n"
1465 	    "%s"
1466 	    "%s"
1467 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1468 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1469 	    refs ? refs : "") == -1) {
1470 		err = got_error_from_errno("asprintf");
1471 		goto done;
1472 	}
1473 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1474 	if (n != strlen(gitconfig)) {
1475 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1476 		goto done;
1477 	}
1478 done:
1479 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1480 		err = got_error_from_errno2("fclose", gitconfig_path);
1481 	free(gitconfig_path);
1482 	free(branches);
1483 	return err;
1484 }
1485 
1486 static const struct got_error *
1487 create_config_files(const char *proto, const char *host, const char *port,
1488     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1489     int mirror_references, struct got_pathlist_head *symrefs,
1490     struct got_pathlist_head *wanted_branches,
1491     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1492 {
1493 	const struct got_error *err = NULL;
1494 	const char *default_branch = NULL;
1495 	struct got_pathlist_entry *pe;
1496 
1497 	/*
1498 	 * If we asked for a set of wanted branches then use the first
1499 	 * one of those.
1500 	 */
1501 	if (!TAILQ_EMPTY(wanted_branches)) {
1502 		pe = TAILQ_FIRST(wanted_branches);
1503 		default_branch = pe->path;
1504 	} else {
1505 		/* First HEAD ref listed by server is the default branch. */
1506 		TAILQ_FOREACH(pe, symrefs, entry) {
1507 			const char *refname = pe->path;
1508 			const char *target = pe->data;
1509 
1510 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1511 				continue;
1512 
1513 			default_branch = target;
1514 			break;
1515 		}
1516 	}
1517 
1518 	/* Create got.conf(5). */
1519 	err = create_gotconfig(proto, host, port, remote_repo_path,
1520 	    default_branch, fetch_all_branches, wanted_branches,
1521 	    wanted_refs, mirror_references, repo);
1522 	if (err)
1523 		return err;
1524 
1525 	/* Create a config file Git can understand. */
1526 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1527 	    wanted_branches, wanted_refs, mirror_references, repo);
1528 }
1529 
1530 static const struct got_error *
1531 cmd_clone(int argc, char *argv[])
1532 {
1533 	const struct got_error *error = NULL;
1534 	const char *uri, *dirname;
1535 	char *proto, *host, *port, *repo_name, *server_path;
1536 	char *default_destdir = NULL, *id_str = NULL;
1537 	const char *repo_path;
1538 	struct got_repository *repo = NULL;
1539 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1540 	struct got_pathlist_entry *pe;
1541 	struct got_object_id *pack_hash = NULL;
1542 	int ch, fetchfd = -1, fetchstatus;
1543 	pid_t fetchpid = -1;
1544 	struct got_fetch_progress_arg fpa;
1545 	char *git_url = NULL;
1546 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1547 	int bflag = 0, list_refs_only = 0;
1548 	int *pack_fds = NULL;
1549 
1550 	TAILQ_INIT(&refs);
1551 	TAILQ_INIT(&symrefs);
1552 	TAILQ_INIT(&wanted_branches);
1553 	TAILQ_INIT(&wanted_refs);
1554 
1555 	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
1556 		switch (ch) {
1557 		case 'a':
1558 			fetch_all_branches = 1;
1559 			break;
1560 		case 'b':
1561 			error = got_pathlist_append(&wanted_branches,
1562 			    optarg, NULL);
1563 			if (error)
1564 				return error;
1565 			bflag = 1;
1566 			break;
1567 		case 'l':
1568 			list_refs_only = 1;
1569 			break;
1570 		case 'm':
1571 			mirror_references = 1;
1572 			break;
1573 		case 'q':
1574 			verbosity = -1;
1575 			break;
1576 		case 'R':
1577 			error = got_pathlist_append(&wanted_refs,
1578 			    optarg, NULL);
1579 			if (error)
1580 				return error;
1581 			break;
1582 		case 'v':
1583 			if (verbosity < 0)
1584 				verbosity = 0;
1585 			else if (verbosity < 3)
1586 				verbosity++;
1587 			break;
1588 		default:
1589 			usage_clone();
1590 			break;
1591 		}
1592 	}
1593 	argc -= optind;
1594 	argv += optind;
1595 
1596 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1597 		option_conflict('a', 'b');
1598 	if (list_refs_only) {
1599 		if (!TAILQ_EMPTY(&wanted_branches))
1600 			option_conflict('l', 'b');
1601 		if (fetch_all_branches)
1602 			option_conflict('l', 'a');
1603 		if (mirror_references)
1604 			option_conflict('l', 'm');
1605 		if (!TAILQ_EMPTY(&wanted_refs))
1606 			option_conflict('l', 'R');
1607 	}
1608 
1609 	uri = argv[0];
1610 
1611 	if (argc == 1)
1612 		dirname = NULL;
1613 	else if (argc == 2)
1614 		dirname = argv[1];
1615 	else
1616 		usage_clone();
1617 
1618 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1619 	    &repo_name, uri);
1620 	if (error)
1621 		goto done;
1622 
1623 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1624 	    host, port ? ":" : "", port ? port : "",
1625 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1626 		error = got_error_from_errno("asprintf");
1627 		goto done;
1628 	}
1629 
1630 	if (strcmp(proto, "git") == 0) {
1631 #ifndef PROFILE
1632 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1633 		    "sendfd dns inet unveil", NULL) == -1)
1634 			err(1, "pledge");
1635 #endif
1636 	} else if (strcmp(proto, "git+ssh") == 0 ||
1637 	    strcmp(proto, "ssh") == 0) {
1638 #ifndef PROFILE
1639 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1640 		    "sendfd unveil", NULL) == -1)
1641 			err(1, "pledge");
1642 #endif
1643 	} else if (strcmp(proto, "http") == 0 ||
1644 	    strcmp(proto, "git+http") == 0) {
1645 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1646 		goto done;
1647 	} else {
1648 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1649 		goto done;
1650 	}
1651 	if (dirname == NULL) {
1652 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1653 			error = got_error_from_errno("asprintf");
1654 			goto done;
1655 		}
1656 		repo_path = default_destdir;
1657 	} else
1658 		repo_path = dirname;
1659 
1660 	if (!list_refs_only) {
1661 		error = got_path_mkdir(repo_path);
1662 		if (error &&
1663 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1664 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1665 			goto done;
1666 		if (!got_path_dir_is_empty(repo_path)) {
1667 			error = got_error_path(repo_path,
1668 			    GOT_ERR_DIR_NOT_EMPTY);
1669 			goto done;
1670 		}
1671 	}
1672 
1673 	error = got_dial_apply_unveil(proto);
1674 	if (error)
1675 		goto done;
1676 
1677 	error = apply_unveil(repo_path, 0, NULL);
1678 	if (error)
1679 		goto done;
1680 
1681 	if (verbosity >= 0)
1682 		printf("Connecting to %s\n", git_url);
1683 
1684 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1685 	    server_path, verbosity);
1686 	if (error)
1687 		goto done;
1688 
1689 	if (!list_refs_only) {
1690 		error = got_repo_init(repo_path, NULL);
1691 		if (error)
1692 			goto done;
1693 		error = got_repo_pack_fds_open(&pack_fds);
1694 		if (error != NULL)
1695 			goto done;
1696 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1697 		if (error)
1698 			goto done;
1699 	}
1700 
1701 	fpa.last_scaled_size[0] = '\0';
1702 	fpa.last_p_indexed = -1;
1703 	fpa.last_p_resolved = -1;
1704 	fpa.verbosity = verbosity;
1705 	fpa.create_configs = 1;
1706 	fpa.configs_created = 0;
1707 	fpa.repo = repo;
1708 	fpa.config_info.symrefs = &symrefs;
1709 	fpa.config_info.wanted_branches = &wanted_branches;
1710 	fpa.config_info.wanted_refs = &wanted_refs;
1711 	fpa.config_info.proto = proto;
1712 	fpa.config_info.host = host;
1713 	fpa.config_info.port = port;
1714 	fpa.config_info.remote_repo_path = server_path;
1715 	fpa.config_info.git_url = git_url;
1716 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1717 	fpa.config_info.mirror_references = mirror_references;
1718 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1719 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1720 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1721 	    list_refs_only, verbosity, fetchfd, repo, NULL, NULL, bflag,
1722 	    fetch_progress, &fpa);
1723 	if (error)
1724 		goto done;
1725 
1726 	if (list_refs_only) {
1727 		error = list_remote_refs(&symrefs, &refs);
1728 		goto done;
1729 	}
1730 
1731 	if (pack_hash == NULL) {
1732 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1733 		    "server sent an empty pack file");
1734 		goto done;
1735 	}
1736 	error = got_object_id_str(&id_str, pack_hash);
1737 	if (error)
1738 		goto done;
1739 	if (verbosity >= 0)
1740 		printf("\nFetched %s.pack\n", id_str);
1741 	free(id_str);
1742 
1743 	/* Set up references provided with the pack file. */
1744 	TAILQ_FOREACH(pe, &refs, entry) {
1745 		const char *refname = pe->path;
1746 		struct got_object_id *id = pe->data;
1747 		char *remote_refname;
1748 
1749 		if (is_wanted_ref(&wanted_refs, refname) &&
1750 		    !mirror_references) {
1751 			error = create_wanted_ref(refname, id,
1752 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1753 			    verbosity - 1, repo);
1754 			if (error)
1755 				goto done;
1756 			continue;
1757 		}
1758 
1759 		error = create_ref(refname, id, verbosity - 1, repo);
1760 		if (error)
1761 			goto done;
1762 
1763 		if (mirror_references)
1764 			continue;
1765 
1766 		if (strncmp("refs/heads/", refname, 11) != 0)
1767 			continue;
1768 
1769 		if (asprintf(&remote_refname,
1770 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1771 		    refname + 11) == -1) {
1772 			error = got_error_from_errno("asprintf");
1773 			goto done;
1774 		}
1775 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1776 		free(remote_refname);
1777 		if (error)
1778 			goto done;
1779 	}
1780 
1781 	/* Set the HEAD reference if the server provided one. */
1782 	TAILQ_FOREACH(pe, &symrefs, entry) {
1783 		struct got_reference *target_ref;
1784 		const char *refname = pe->path;
1785 		const char *target = pe->data;
1786 		char *remote_refname = NULL, *remote_target = NULL;
1787 
1788 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1789 			continue;
1790 
1791 		error = got_ref_open(&target_ref, repo, target, 0);
1792 		if (error) {
1793 			if (error->code == GOT_ERR_NOT_REF) {
1794 				error = NULL;
1795 				continue;
1796 			}
1797 			goto done;
1798 		}
1799 
1800 		error = create_symref(refname, target_ref, verbosity, repo);
1801 		got_ref_close(target_ref);
1802 		if (error)
1803 			goto done;
1804 
1805 		if (mirror_references)
1806 			continue;
1807 
1808 		if (strncmp("refs/heads/", target, 11) != 0)
1809 			continue;
1810 
1811 		if (asprintf(&remote_refname,
1812 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1813 		    refname) == -1) {
1814 			error = got_error_from_errno("asprintf");
1815 			goto done;
1816 		}
1817 		if (asprintf(&remote_target,
1818 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1819 		    target + 11) == -1) {
1820 			error = got_error_from_errno("asprintf");
1821 			free(remote_refname);
1822 			goto done;
1823 		}
1824 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1825 		if (error) {
1826 			free(remote_refname);
1827 			free(remote_target);
1828 			if (error->code == GOT_ERR_NOT_REF) {
1829 				error = NULL;
1830 				continue;
1831 			}
1832 			goto done;
1833 		}
1834 		error = create_symref(remote_refname, target_ref,
1835 		    verbosity - 1, repo);
1836 		free(remote_refname);
1837 		free(remote_target);
1838 		got_ref_close(target_ref);
1839 		if (error)
1840 			goto done;
1841 	}
1842 	if (pe == NULL) {
1843 		/*
1844 		 * We failed to set the HEAD reference. If we asked for
1845 		 * a set of wanted branches use the first of one of those
1846 		 * which could be fetched instead.
1847 		 */
1848 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1849 			const char *target = pe->path;
1850 			struct got_reference *target_ref;
1851 
1852 			error = got_ref_open(&target_ref, repo, target, 0);
1853 			if (error) {
1854 				if (error->code == GOT_ERR_NOT_REF) {
1855 					error = NULL;
1856 					continue;
1857 				}
1858 				goto done;
1859 			}
1860 
1861 			error = create_symref(GOT_REF_HEAD, target_ref,
1862 			    verbosity, repo);
1863 			got_ref_close(target_ref);
1864 			if (error)
1865 				goto done;
1866 			break;
1867 		}
1868 
1869 		if (!fpa.configs_created && pe != NULL) {
1870 			error = create_config_files(fpa.config_info.proto,
1871 			    fpa.config_info.host, fpa.config_info.port,
1872 			    fpa.config_info.remote_repo_path,
1873 			    fpa.config_info.git_url,
1874 			    fpa.config_info.fetch_all_branches,
1875 			    fpa.config_info.mirror_references,
1876 			    fpa.config_info.symrefs,
1877 			    fpa.config_info.wanted_branches,
1878 			    fpa.config_info.wanted_refs, fpa.repo);
1879 			if (error)
1880 				goto done;
1881 		}
1882 	}
1883 
1884 	if (verbosity >= 0)
1885 		printf("Created %s repository '%s'\n",
1886 		    mirror_references ? "mirrored" : "cloned", repo_path);
1887 done:
1888 	if (pack_fds) {
1889 		const struct got_error *pack_err =
1890 		    got_repo_pack_fds_close(pack_fds);
1891 		if (error == NULL)
1892 			error = pack_err;
1893 	}
1894 	if (fetchpid > 0) {
1895 		if (kill(fetchpid, SIGTERM) == -1)
1896 			error = got_error_from_errno("kill");
1897 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1898 			error = got_error_from_errno("waitpid");
1899 	}
1900 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1901 		error = got_error_from_errno("close");
1902 	if (repo) {
1903 		const struct got_error *close_err = got_repo_close(repo);
1904 		if (error == NULL)
1905 			error = close_err;
1906 	}
1907 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
1908 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
1909 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
1910 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
1911 	free(pack_hash);
1912 	free(proto);
1913 	free(host);
1914 	free(port);
1915 	free(server_path);
1916 	free(repo_name);
1917 	free(default_destdir);
1918 	free(git_url);
1919 	return error;
1920 }
1921 
1922 static const struct got_error *
1923 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1924     int replace_tags, int verbosity, struct got_repository *repo)
1925 {
1926 	const struct got_error *err = NULL;
1927 	char *new_id_str = NULL;
1928 	struct got_object_id *old_id = NULL;
1929 
1930 	err = got_object_id_str(&new_id_str, new_id);
1931 	if (err)
1932 		goto done;
1933 
1934 	if (!replace_tags &&
1935 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1936 		err = got_ref_resolve(&old_id, repo, ref);
1937 		if (err)
1938 			goto done;
1939 		if (got_object_id_cmp(old_id, new_id) == 0)
1940 			goto done;
1941 		if (verbosity >= 0) {
1942 			printf("Rejecting update of existing tag %s: %s\n",
1943 			    got_ref_get_name(ref), new_id_str);
1944 		}
1945 		goto done;
1946 	}
1947 
1948 	if (got_ref_is_symbolic(ref)) {
1949 		if (verbosity >= 0) {
1950 			printf("Replacing reference %s: %s\n",
1951 			    got_ref_get_name(ref),
1952 			    got_ref_get_symref_target(ref));
1953 		}
1954 		err = got_ref_change_symref_to_ref(ref, new_id);
1955 		if (err)
1956 			goto done;
1957 		err = got_ref_write(ref, repo);
1958 		if (err)
1959 			goto done;
1960 	} else {
1961 		err = got_ref_resolve(&old_id, repo, ref);
1962 		if (err)
1963 			goto done;
1964 		if (got_object_id_cmp(old_id, new_id) == 0)
1965 			goto done;
1966 
1967 		err = got_ref_change_ref(ref, new_id);
1968 		if (err)
1969 			goto done;
1970 		err = got_ref_write(ref, repo);
1971 		if (err)
1972 			goto done;
1973 	}
1974 
1975 	if (verbosity >= 0)
1976 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1977 		    new_id_str);
1978 done:
1979 	free(old_id);
1980 	free(new_id_str);
1981 	return err;
1982 }
1983 
1984 static const struct got_error *
1985 update_symref(const char *refname, struct got_reference *target_ref,
1986     int verbosity, struct got_repository *repo)
1987 {
1988 	const struct got_error *err = NULL, *unlock_err;
1989 	struct got_reference *symref;
1990 	int symref_is_locked = 0;
1991 
1992 	err = got_ref_open(&symref, repo, refname, 1);
1993 	if (err) {
1994 		if (err->code != GOT_ERR_NOT_REF)
1995 			return err;
1996 		err = got_ref_alloc_symref(&symref, refname, target_ref);
1997 		if (err)
1998 			goto done;
1999 
2000 		err = got_ref_write(symref, repo);
2001 		if (err)
2002 			goto done;
2003 
2004 		if (verbosity >= 0)
2005 			printf("Created reference %s: %s\n",
2006 			    got_ref_get_name(symref),
2007 			    got_ref_get_symref_target(symref));
2008 	} else {
2009 		symref_is_locked = 1;
2010 
2011 		if (strcmp(got_ref_get_symref_target(symref),
2012 		    got_ref_get_name(target_ref)) == 0)
2013 			goto done;
2014 
2015 		err = got_ref_change_symref(symref,
2016 		    got_ref_get_name(target_ref));
2017 		if (err)
2018 			goto done;
2019 
2020 		err = got_ref_write(symref, repo);
2021 		if (err)
2022 			goto done;
2023 
2024 		if (verbosity >= 0)
2025 			printf("Updated %s: %s\n", got_ref_get_name(symref),
2026 			    got_ref_get_symref_target(symref));
2027 
2028 	}
2029 done:
2030 	if (symref_is_locked) {
2031 		unlock_err = got_ref_unlock(symref);
2032 		if (unlock_err && err == NULL)
2033 			err = unlock_err;
2034 	}
2035 	got_ref_close(symref);
2036 	return err;
2037 }
2038 
2039 __dead static void
2040 usage_fetch(void)
2041 {
2042 	fprintf(stderr, "usage: %s fetch [-adlqtvX] [-b branch] "
2043 	    "[-R reference] [-r repository-path] [remote-repository]\n",
2044 	    getprogname());
2045 	exit(1);
2046 }
2047 
2048 static const struct got_error *
2049 delete_missing_ref(struct got_reference *ref,
2050     int verbosity, struct got_repository *repo)
2051 {
2052 	const struct got_error *err = NULL;
2053 	struct got_object_id *id = NULL;
2054 	char *id_str = NULL;
2055 
2056 	if (got_ref_is_symbolic(ref)) {
2057 		err = got_ref_delete(ref, repo);
2058 		if (err)
2059 			return err;
2060 		if (verbosity >= 0) {
2061 			printf("Deleted %s: %s\n",
2062 			    got_ref_get_name(ref),
2063 			    got_ref_get_symref_target(ref));
2064 		}
2065 	} else {
2066 		err = got_ref_resolve(&id, repo, ref);
2067 		if (err)
2068 			return err;
2069 		err = got_object_id_str(&id_str, id);
2070 		if (err)
2071 			goto done;
2072 
2073 		err = got_ref_delete(ref, repo);
2074 		if (err)
2075 			goto done;
2076 		if (verbosity >= 0) {
2077 			printf("Deleted %s: %s\n",
2078 			    got_ref_get_name(ref), id_str);
2079 		}
2080 	}
2081 done:
2082 	free(id);
2083 	free(id_str);
2084 	return err;
2085 }
2086 
2087 static const struct got_error *
2088 delete_missing_refs(struct got_pathlist_head *their_refs,
2089     struct got_pathlist_head *their_symrefs,
2090     const struct got_remote_repo *remote,
2091     int verbosity, struct got_repository *repo)
2092 {
2093 	const struct got_error *err = NULL, *unlock_err;
2094 	struct got_reflist_head my_refs;
2095 	struct got_reflist_entry *re;
2096 	struct got_pathlist_entry *pe;
2097 	char *remote_namespace = NULL;
2098 	char *local_refname = NULL;
2099 
2100 	TAILQ_INIT(&my_refs);
2101 
2102 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2103 	    == -1)
2104 		return got_error_from_errno("asprintf");
2105 
2106 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2107 	if (err)
2108 		goto done;
2109 
2110 	TAILQ_FOREACH(re, &my_refs, entry) {
2111 		const char *refname = got_ref_get_name(re->ref);
2112 		const char *their_refname;
2113 
2114 		if (remote->mirror_references) {
2115 			their_refname = refname;
2116 		} else {
2117 			if (strncmp(refname, remote_namespace,
2118 			    strlen(remote_namespace)) == 0) {
2119 				if (strcmp(refname + strlen(remote_namespace),
2120 				    GOT_REF_HEAD) == 0)
2121 					continue;
2122 				if (asprintf(&local_refname, "refs/heads/%s",
2123 				    refname + strlen(remote_namespace)) == -1) {
2124 					err = got_error_from_errno("asprintf");
2125 					goto done;
2126 				}
2127 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2128 				continue;
2129 
2130 			their_refname = local_refname;
2131 		}
2132 
2133 		TAILQ_FOREACH(pe, their_refs, entry) {
2134 			if (strcmp(their_refname, pe->path) == 0)
2135 				break;
2136 		}
2137 		if (pe != NULL)
2138 			continue;
2139 
2140 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2141 			if (strcmp(their_refname, pe->path) == 0)
2142 				break;
2143 		}
2144 		if (pe != NULL)
2145 			continue;
2146 
2147 		err = delete_missing_ref(re->ref, verbosity, repo);
2148 		if (err)
2149 			break;
2150 
2151 		if (local_refname) {
2152 			struct got_reference *ref;
2153 			err = got_ref_open(&ref, repo, local_refname, 1);
2154 			if (err) {
2155 				if (err->code != GOT_ERR_NOT_REF)
2156 					break;
2157 				free(local_refname);
2158 				local_refname = NULL;
2159 				continue;
2160 			}
2161 			err = delete_missing_ref(ref, verbosity, repo);
2162 			if (err)
2163 				break;
2164 			unlock_err = got_ref_unlock(ref);
2165 			got_ref_close(ref);
2166 			if (unlock_err && err == NULL) {
2167 				err = unlock_err;
2168 				break;
2169 			}
2170 
2171 			free(local_refname);
2172 			local_refname = NULL;
2173 		}
2174 	}
2175 done:
2176 	got_ref_list_free(&my_refs);
2177 	free(remote_namespace);
2178 	free(local_refname);
2179 	return err;
2180 }
2181 
2182 static const struct got_error *
2183 update_wanted_ref(const char *refname, struct got_object_id *id,
2184     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2185 {
2186 	const struct got_error *err, *unlock_err;
2187 	char *remote_refname;
2188 	struct got_reference *ref;
2189 
2190 	if (strncmp("refs/", refname, 5) == 0)
2191 		refname += 5;
2192 
2193 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2194 	    remote_repo_name, refname) == -1)
2195 		return got_error_from_errno("asprintf");
2196 
2197 	err = got_ref_open(&ref, repo, remote_refname, 1);
2198 	if (err) {
2199 		if (err->code != GOT_ERR_NOT_REF)
2200 			goto done;
2201 		err = create_ref(remote_refname, id, verbosity, repo);
2202 	} else {
2203 		err = update_ref(ref, id, 0, verbosity, repo);
2204 		unlock_err = got_ref_unlock(ref);
2205 		if (unlock_err && err == NULL)
2206 			err = unlock_err;
2207 		got_ref_close(ref);
2208 	}
2209 done:
2210 	free(remote_refname);
2211 	return err;
2212 }
2213 
2214 static const struct got_error *
2215 delete_ref(struct got_repository *repo, struct got_reference *ref)
2216 {
2217 	const struct got_error *err = NULL;
2218 	struct got_object_id *id = NULL;
2219 	char *id_str = NULL;
2220 	const char *target;
2221 
2222 	if (got_ref_is_symbolic(ref)) {
2223 		target = got_ref_get_symref_target(ref);
2224 	} else {
2225 		err = got_ref_resolve(&id, repo, ref);
2226 		if (err)
2227 			goto done;
2228 		err = got_object_id_str(&id_str, id);
2229 		if (err)
2230 			goto done;
2231 		target = id_str;
2232 	}
2233 
2234 	err = got_ref_delete(ref, repo);
2235 	if (err)
2236 		goto done;
2237 
2238 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2239 done:
2240 	free(id);
2241 	free(id_str);
2242 	return err;
2243 }
2244 
2245 static const struct got_error *
2246 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2247 {
2248 	const struct got_error *err = NULL;
2249 	struct got_reflist_head refs;
2250 	struct got_reflist_entry *re;
2251 	char *prefix;
2252 
2253 	TAILQ_INIT(&refs);
2254 
2255 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2256 		err = got_error_from_errno("asprintf");
2257 		goto done;
2258 	}
2259 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2260 	if (err)
2261 		goto done;
2262 
2263 	TAILQ_FOREACH(re, &refs, entry)
2264 		delete_ref(repo, re->ref);
2265 done:
2266 	got_ref_list_free(&refs);
2267 	return err;
2268 }
2269 
2270 static const struct got_error *
2271 cmd_fetch(int argc, char *argv[])
2272 {
2273 	const struct got_error *error = NULL, *unlock_err;
2274 	char *cwd = NULL, *repo_path = NULL;
2275 	const char *remote_name;
2276 	char *proto = NULL, *host = NULL, *port = NULL;
2277 	char *repo_name = NULL, *server_path = NULL;
2278 	const struct got_remote_repo *remotes, *remote = NULL;
2279 	int nremotes;
2280 	char *id_str = NULL;
2281 	struct got_repository *repo = NULL;
2282 	struct got_worktree *worktree = NULL;
2283 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2284 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2285 	struct got_pathlist_entry *pe;
2286 	struct got_reflist_head remote_refs;
2287 	struct got_reflist_entry *re;
2288 	struct got_object_id *pack_hash = NULL;
2289 	int i, ch, fetchfd = -1, fetchstatus;
2290 	pid_t fetchpid = -1;
2291 	struct got_fetch_progress_arg fpa;
2292 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2293 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2294 	int *pack_fds = NULL, have_bflag = 0;
2295 	const char *remote_head = NULL, *worktree_branch = NULL;
2296 
2297 	TAILQ_INIT(&refs);
2298 	TAILQ_INIT(&symrefs);
2299 	TAILQ_INIT(&remote_refs);
2300 	TAILQ_INIT(&wanted_branches);
2301 	TAILQ_INIT(&wanted_refs);
2302 
2303 	while ((ch = getopt(argc, argv, "ab:dlqR:r:tvX")) != -1) {
2304 		switch (ch) {
2305 		case 'a':
2306 			fetch_all_branches = 1;
2307 			break;
2308 		case 'b':
2309 			error = got_pathlist_append(&wanted_branches,
2310 			    optarg, NULL);
2311 			if (error)
2312 				return error;
2313 			have_bflag = 1;
2314 			break;
2315 		case 'd':
2316 			delete_refs = 1;
2317 			break;
2318 		case 'l':
2319 			list_refs_only = 1;
2320 			break;
2321 		case 'q':
2322 			verbosity = -1;
2323 			break;
2324 		case 'R':
2325 			error = got_pathlist_append(&wanted_refs,
2326 			    optarg, NULL);
2327 			if (error)
2328 				return error;
2329 			break;
2330 		case 'r':
2331 			repo_path = realpath(optarg, NULL);
2332 			if (repo_path == NULL)
2333 				return got_error_from_errno2("realpath",
2334 				    optarg);
2335 			got_path_strip_trailing_slashes(repo_path);
2336 			break;
2337 		case 't':
2338 			replace_tags = 1;
2339 			break;
2340 		case 'v':
2341 			if (verbosity < 0)
2342 				verbosity = 0;
2343 			else if (verbosity < 3)
2344 				verbosity++;
2345 			break;
2346 		case 'X':
2347 			delete_remote = 1;
2348 			break;
2349 		default:
2350 			usage_fetch();
2351 			break;
2352 		}
2353 	}
2354 	argc -= optind;
2355 	argv += optind;
2356 
2357 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2358 		option_conflict('a', 'b');
2359 	if (list_refs_only) {
2360 		if (!TAILQ_EMPTY(&wanted_branches))
2361 			option_conflict('l', 'b');
2362 		if (fetch_all_branches)
2363 			option_conflict('l', 'a');
2364 		if (delete_refs)
2365 			option_conflict('l', 'd');
2366 		if (delete_remote)
2367 			option_conflict('l', 'X');
2368 	}
2369 	if (delete_remote) {
2370 		if (fetch_all_branches)
2371 			option_conflict('X', 'a');
2372 		if (!TAILQ_EMPTY(&wanted_branches))
2373 			option_conflict('X', 'b');
2374 		if (delete_refs)
2375 			option_conflict('X', 'd');
2376 		if (replace_tags)
2377 			option_conflict('X', 't');
2378 		if (!TAILQ_EMPTY(&wanted_refs))
2379 			option_conflict('X', 'R');
2380 	}
2381 
2382 	if (argc == 0) {
2383 		if (delete_remote)
2384 			errx(1, "-X option requires a remote name");
2385 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2386 	} else if (argc == 1)
2387 		remote_name = argv[0];
2388 	else
2389 		usage_fetch();
2390 
2391 	cwd = getcwd(NULL, 0);
2392 	if (cwd == NULL) {
2393 		error = got_error_from_errno("getcwd");
2394 		goto done;
2395 	}
2396 
2397 	error = got_repo_pack_fds_open(&pack_fds);
2398 	if (error != NULL)
2399 		goto done;
2400 
2401 	if (repo_path == NULL) {
2402 		error = got_worktree_open(&worktree, cwd);
2403 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2404 			goto done;
2405 		else
2406 			error = NULL;
2407 		if (worktree) {
2408 			repo_path =
2409 			    strdup(got_worktree_get_repo_path(worktree));
2410 			if (repo_path == NULL)
2411 				error = got_error_from_errno("strdup");
2412 			if (error)
2413 				goto done;
2414 		} else {
2415 			repo_path = strdup(cwd);
2416 			if (repo_path == NULL) {
2417 				error = got_error_from_errno("strdup");
2418 				goto done;
2419 			}
2420 		}
2421 	}
2422 
2423 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2424 	if (error)
2425 		goto done;
2426 
2427 	if (delete_remote) {
2428 		error = delete_refs_for_remote(repo, remote_name);
2429 		goto done; /* nothing else to do */
2430 	}
2431 
2432 	if (worktree) {
2433 		worktree_conf = got_worktree_get_gotconfig(worktree);
2434 		if (worktree_conf) {
2435 			got_gotconfig_get_remotes(&nremotes, &remotes,
2436 			    worktree_conf);
2437 			for (i = 0; i < nremotes; i++) {
2438 				if (strcmp(remotes[i].name, remote_name) == 0) {
2439 					remote = &remotes[i];
2440 					break;
2441 				}
2442 			}
2443 		}
2444 	}
2445 	if (remote == NULL) {
2446 		repo_conf = got_repo_get_gotconfig(repo);
2447 		if (repo_conf) {
2448 			got_gotconfig_get_remotes(&nremotes, &remotes,
2449 			    repo_conf);
2450 			for (i = 0; i < nremotes; i++) {
2451 				if (strcmp(remotes[i].name, remote_name) == 0) {
2452 					remote = &remotes[i];
2453 					break;
2454 				}
2455 			}
2456 		}
2457 	}
2458 	if (remote == NULL) {
2459 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2460 		for (i = 0; i < nremotes; i++) {
2461 			if (strcmp(remotes[i].name, remote_name) == 0) {
2462 				remote = &remotes[i];
2463 				break;
2464 			}
2465 		}
2466 	}
2467 	if (remote == NULL) {
2468 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2469 		goto done;
2470 	}
2471 
2472 	if (TAILQ_EMPTY(&wanted_branches)) {
2473 		if (!fetch_all_branches)
2474 			fetch_all_branches = remote->fetch_all_branches;
2475 		for (i = 0; i < remote->nfetch_branches; i++) {
2476 			error = got_pathlist_append(&wanted_branches,
2477 			    remote->fetch_branches[i], NULL);
2478 			if (error)
2479 				goto done;
2480 		}
2481 	}
2482 	if (TAILQ_EMPTY(&wanted_refs)) {
2483 		for (i = 0; i < remote->nfetch_refs; i++) {
2484 			error = got_pathlist_append(&wanted_refs,
2485 			    remote->fetch_refs[i], NULL);
2486 			if (error)
2487 				goto done;
2488 		}
2489 	}
2490 
2491 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2492 	    &repo_name, remote->fetch_url);
2493 	if (error)
2494 		goto done;
2495 
2496 	if (strcmp(proto, "git") == 0) {
2497 #ifndef PROFILE
2498 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2499 		    "sendfd dns inet unveil", NULL) == -1)
2500 			err(1, "pledge");
2501 #endif
2502 	} else if (strcmp(proto, "git+ssh") == 0 ||
2503 	    strcmp(proto, "ssh") == 0) {
2504 #ifndef PROFILE
2505 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2506 		    "sendfd unveil", NULL) == -1)
2507 			err(1, "pledge");
2508 #endif
2509 	} else if (strcmp(proto, "http") == 0 ||
2510 	    strcmp(proto, "git+http") == 0) {
2511 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2512 		goto done;
2513 	} else {
2514 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2515 		goto done;
2516 	}
2517 
2518 	error = got_dial_apply_unveil(proto);
2519 	if (error)
2520 		goto done;
2521 
2522 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2523 	if (error)
2524 		goto done;
2525 
2526 	if (verbosity >= 0) {
2527 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
2528 		    remote->name, proto, host,
2529 		    port ? ":" : "", port ? port : "",
2530 		    *server_path == '/' ? "" : "/", server_path);
2531 	}
2532 
2533 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2534 	    server_path, verbosity);
2535 	if (error)
2536 		goto done;
2537 
2538 	if (!have_bflag) {
2539 		/*
2540 		 * If set, get this remote's HEAD ref target so
2541 		 * if it has changed on the server we can fetch it.
2542 		 */
2543 		error = got_ref_list(&remote_refs, repo, "refs/remotes",
2544 		    got_ref_cmp_by_name, repo);
2545 		if (error)
2546 			goto done;
2547 
2548 		TAILQ_FOREACH(re, &remote_refs, entry) {
2549 			const char	*remote_refname, *remote_target;
2550 			size_t		 remote_name_len;
2551 
2552 			if (!got_ref_is_symbolic(re->ref))
2553 				continue;
2554 
2555 			remote_name_len = strlen(remote->name);
2556 			remote_refname = got_ref_get_name(re->ref);
2557 
2558 			/* we only want refs/remotes/$remote->name/HEAD */
2559 			if (strncmp(remote_refname + 13, remote->name,
2560 			    remote_name_len) != 0)
2561 				continue;
2562 
2563 			if (strcmp(remote_refname + remote_name_len + 14,
2564 			    GOT_REF_HEAD) != 0)
2565 				continue;
2566 
2567 			/*
2568 			 * Take the name itself because we already
2569 			 * only match with refs/heads/ in fetch_pack().
2570 			 */
2571 			remote_target = got_ref_get_symref_target(re->ref);
2572 			remote_head = remote_target + remote_name_len + 14;
2573 			break;
2574 		}
2575 
2576 		if (worktree) {
2577 			const char *refname;
2578 
2579 			refname = got_worktree_get_head_ref_name(worktree);
2580 			if (strncmp(refname, "refs/heads/", 11) == 0)
2581 				worktree_branch = refname;
2582 		}
2583 	}
2584 
2585 	fpa.last_scaled_size[0] = '\0';
2586 	fpa.last_p_indexed = -1;
2587 	fpa.last_p_resolved = -1;
2588 	fpa.verbosity = verbosity;
2589 	fpa.repo = repo;
2590 	fpa.create_configs = 0;
2591 	fpa.configs_created = 0;
2592 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2593 
2594 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2595 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2596 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2597 	    worktree_branch, remote_head, have_bflag, fetch_progress, &fpa);
2598 	if (error)
2599 		goto done;
2600 
2601 	if (list_refs_only) {
2602 		error = list_remote_refs(&symrefs, &refs);
2603 		goto done;
2604 	}
2605 
2606 	if (pack_hash == NULL) {
2607 		if (verbosity >= 0)
2608 			printf("Already up-to-date\n");
2609 	} else if (verbosity >= 0) {
2610 		error = got_object_id_str(&id_str, pack_hash);
2611 		if (error)
2612 			goto done;
2613 		printf("\nFetched %s.pack\n", id_str);
2614 		free(id_str);
2615 		id_str = NULL;
2616 	}
2617 
2618 	/* Update references provided with the pack file. */
2619 	TAILQ_FOREACH(pe, &refs, entry) {
2620 		const char *refname = pe->path;
2621 		struct got_object_id *id = pe->data;
2622 		struct got_reference *ref;
2623 		char *remote_refname;
2624 
2625 		if (is_wanted_ref(&wanted_refs, refname) &&
2626 		    !remote->mirror_references) {
2627 			error = update_wanted_ref(refname, id,
2628 			    remote->name, verbosity, repo);
2629 			if (error)
2630 				goto done;
2631 			continue;
2632 		}
2633 
2634 		if (remote->mirror_references ||
2635 		    strncmp("refs/tags/", refname, 10) == 0) {
2636 			error = got_ref_open(&ref, repo, refname, 1);
2637 			if (error) {
2638 				if (error->code != GOT_ERR_NOT_REF)
2639 					goto done;
2640 				error = create_ref(refname, id, verbosity,
2641 				    repo);
2642 				if (error)
2643 					goto done;
2644 			} else {
2645 				error = update_ref(ref, id, replace_tags,
2646 				    verbosity, repo);
2647 				unlock_err = got_ref_unlock(ref);
2648 				if (unlock_err && error == NULL)
2649 					error = unlock_err;
2650 				got_ref_close(ref);
2651 				if (error)
2652 					goto done;
2653 			}
2654 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2655 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2656 			    remote_name, refname + 11) == -1) {
2657 				error = got_error_from_errno("asprintf");
2658 				goto done;
2659 			}
2660 
2661 			error = got_ref_open(&ref, repo, remote_refname, 1);
2662 			if (error) {
2663 				if (error->code != GOT_ERR_NOT_REF)
2664 					goto done;
2665 				error = create_ref(remote_refname, id,
2666 				    verbosity, repo);
2667 				if (error)
2668 					goto done;
2669 			} else {
2670 				error = update_ref(ref, id, replace_tags,
2671 				    verbosity, repo);
2672 				unlock_err = got_ref_unlock(ref);
2673 				if (unlock_err && error == NULL)
2674 					error = unlock_err;
2675 				got_ref_close(ref);
2676 				if (error)
2677 					goto done;
2678 			}
2679 
2680 			/* Also create a local branch if none exists yet. */
2681 			error = got_ref_open(&ref, repo, refname, 1);
2682 			if (error) {
2683 				if (error->code != GOT_ERR_NOT_REF)
2684 					goto done;
2685 				error = create_ref(refname, id, verbosity,
2686 				    repo);
2687 				if (error)
2688 					goto done;
2689 			} else {
2690 				unlock_err = got_ref_unlock(ref);
2691 				if (unlock_err && error == NULL)
2692 					error = unlock_err;
2693 				got_ref_close(ref);
2694 			}
2695 		}
2696 	}
2697 	if (delete_refs) {
2698 		error = delete_missing_refs(&refs, &symrefs, remote,
2699 		    verbosity, repo);
2700 		if (error)
2701 			goto done;
2702 	}
2703 
2704 	if (!remote->mirror_references) {
2705 		/* Update remote HEAD reference if the server provided one. */
2706 		TAILQ_FOREACH(pe, &symrefs, entry) {
2707 			struct got_reference *target_ref;
2708 			const char *refname = pe->path;
2709 			const char *target = pe->data;
2710 			char *remote_refname = NULL, *remote_target = NULL;
2711 
2712 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2713 				continue;
2714 
2715 			if (strncmp("refs/heads/", target, 11) != 0)
2716 				continue;
2717 
2718 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2719 			    remote->name, refname) == -1) {
2720 				error = got_error_from_errno("asprintf");
2721 				goto done;
2722 			}
2723 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2724 			    remote->name, target + 11) == -1) {
2725 				error = got_error_from_errno("asprintf");
2726 				free(remote_refname);
2727 				goto done;
2728 			}
2729 
2730 			error = got_ref_open(&target_ref, repo, remote_target,
2731 			    0);
2732 			if (error) {
2733 				free(remote_refname);
2734 				free(remote_target);
2735 				if (error->code == GOT_ERR_NOT_REF) {
2736 					error = NULL;
2737 					continue;
2738 				}
2739 				goto done;
2740 			}
2741 			error = update_symref(remote_refname, target_ref,
2742 			    verbosity, repo);
2743 			free(remote_refname);
2744 			free(remote_target);
2745 			got_ref_close(target_ref);
2746 			if (error)
2747 				goto done;
2748 		}
2749 	}
2750 done:
2751 	if (fetchpid > 0) {
2752 		if (kill(fetchpid, SIGTERM) == -1)
2753 			error = got_error_from_errno("kill");
2754 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2755 			error = got_error_from_errno("waitpid");
2756 	}
2757 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2758 		error = got_error_from_errno("close");
2759 	if (repo) {
2760 		const struct got_error *close_err = got_repo_close(repo);
2761 		if (error == NULL)
2762 			error = close_err;
2763 	}
2764 	if (worktree)
2765 		got_worktree_close(worktree);
2766 	if (pack_fds) {
2767 		const struct got_error *pack_err =
2768 		    got_repo_pack_fds_close(pack_fds);
2769 		if (error == NULL)
2770 			error = pack_err;
2771 	}
2772 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
2773 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
2774 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
2775 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
2776 	got_ref_list_free(&remote_refs);
2777 	free(id_str);
2778 	free(cwd);
2779 	free(repo_path);
2780 	free(pack_hash);
2781 	free(proto);
2782 	free(host);
2783 	free(port);
2784 	free(server_path);
2785 	free(repo_name);
2786 	return error;
2787 }
2788 
2789 
2790 __dead static void
2791 usage_checkout(void)
2792 {
2793 	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
2794 	    "[-p path-prefix] repository-path [work-tree-path]\n",
2795 	    getprogname());
2796 	exit(1);
2797 }
2798 
2799 static void
2800 show_worktree_base_ref_warning(void)
2801 {
2802 	fprintf(stderr, "%s: warning: could not create a reference "
2803 	    "to the work tree's base commit; the commit could be "
2804 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2805 	    "repository writable and running 'got update' will prevent this\n",
2806 	    getprogname());
2807 }
2808 
2809 struct got_checkout_progress_arg {
2810 	const char *worktree_path;
2811 	int had_base_commit_ref_error;
2812 	int verbosity;
2813 };
2814 
2815 static const struct got_error *
2816 checkout_progress(void *arg, unsigned char status, const char *path)
2817 {
2818 	struct got_checkout_progress_arg *a = arg;
2819 
2820 	/* Base commit bump happens silently. */
2821 	if (status == GOT_STATUS_BUMP_BASE)
2822 		return NULL;
2823 
2824 	if (status == GOT_STATUS_BASE_REF_ERR) {
2825 		a->had_base_commit_ref_error = 1;
2826 		return NULL;
2827 	}
2828 
2829 	while (path[0] == '/')
2830 		path++;
2831 
2832 	if (a->verbosity >= 0)
2833 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2834 
2835 	return NULL;
2836 }
2837 
2838 static const struct got_error *
2839 check_cancelled(void *arg)
2840 {
2841 	if (sigint_received || sigpipe_received)
2842 		return got_error(GOT_ERR_CANCELLED);
2843 	return NULL;
2844 }
2845 
2846 static const struct got_error *
2847 check_linear_ancestry(struct got_object_id *commit_id,
2848     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2849     struct got_repository *repo)
2850 {
2851 	const struct got_error *err = NULL;
2852 	struct got_object_id *yca_id;
2853 
2854 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2855 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2856 	if (err)
2857 		return err;
2858 
2859 	if (yca_id == NULL)
2860 		return got_error(GOT_ERR_ANCESTRY);
2861 
2862 	/*
2863 	 * Require a straight line of history between the target commit
2864 	 * and the work tree's base commit.
2865 	 *
2866 	 * Non-linear situations such as this require a rebase:
2867 	 *
2868 	 * (commit) D       F (base_commit)
2869 	 *           \     /
2870 	 *            C   E
2871 	 *             \ /
2872 	 *              B (yca)
2873 	 *              |
2874 	 *              A
2875 	 *
2876 	 * 'got update' only handles linear cases:
2877 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2878 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2879 	 */
2880 	if (allow_forwards_in_time_only) {
2881 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2882 		return got_error(GOT_ERR_ANCESTRY);
2883 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2884 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2885 		return got_error(GOT_ERR_ANCESTRY);
2886 
2887 	free(yca_id);
2888 	return NULL;
2889 }
2890 
2891 static const struct got_error *
2892 check_same_branch(struct got_object_id *commit_id,
2893     struct got_reference *head_ref, struct got_object_id *yca_id,
2894     struct got_repository *repo)
2895 {
2896 	const struct got_error *err = NULL;
2897 	struct got_commit_graph *graph = NULL;
2898 	struct got_object_id *head_commit_id = NULL;
2899 	int is_same_branch = 0;
2900 
2901 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2902 	if (err)
2903 		goto done;
2904 
2905 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2906 		is_same_branch = 1;
2907 		goto done;
2908 	}
2909 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2910 		is_same_branch = 1;
2911 		goto done;
2912 	}
2913 
2914 	err = got_commit_graph_open(&graph, "/", 1);
2915 	if (err)
2916 		goto done;
2917 
2918 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2919 	    check_cancelled, NULL);
2920 	if (err)
2921 		goto done;
2922 
2923 	for (;;) {
2924 		struct got_object_id id;
2925 
2926 		err = got_commit_graph_iter_next(&id, graph, repo,
2927 		    check_cancelled, NULL);
2928 		if (err) {
2929 			if (err->code == GOT_ERR_ITER_COMPLETED)
2930 				err = NULL;
2931 			break;
2932 		}
2933 
2934 		if (yca_id && got_object_id_cmp(&id, yca_id) == 0)
2935 			break;
2936 		if (got_object_id_cmp(&id, commit_id) == 0) {
2937 			is_same_branch = 1;
2938 			break;
2939 		}
2940 	}
2941 done:
2942 	if (graph)
2943 		got_commit_graph_close(graph);
2944 	free(head_commit_id);
2945 	if (!err && !is_same_branch)
2946 		err = got_error(GOT_ERR_ANCESTRY);
2947 	return err;
2948 }
2949 
2950 static const struct got_error *
2951 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2952 {
2953 	static char msg[512];
2954 	const char *branch_name;
2955 
2956 	if (got_ref_is_symbolic(ref))
2957 		branch_name = got_ref_get_symref_target(ref);
2958 	else
2959 		branch_name = got_ref_get_name(ref);
2960 
2961 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2962 		branch_name += 11;
2963 
2964 	snprintf(msg, sizeof(msg),
2965 	    "target commit is not contained in branch '%s'; "
2966 	    "the branch to use must be specified with -b; "
2967 	    "if necessary a new branch can be created for "
2968 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2969 	    branch_name, commit_id_str);
2970 
2971 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2972 }
2973 
2974 static const struct got_error *
2975 cmd_checkout(int argc, char *argv[])
2976 {
2977 	const struct got_error *error = NULL;
2978 	struct got_repository *repo = NULL;
2979 	struct got_reference *head_ref = NULL, *ref = NULL;
2980 	struct got_worktree *worktree = NULL;
2981 	char *repo_path = NULL;
2982 	char *worktree_path = NULL;
2983 	const char *path_prefix = "";
2984 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2985 	char *commit_id_str = NULL;
2986 	struct got_object_id *commit_id = NULL;
2987 	char *cwd = NULL;
2988 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2989 	struct got_pathlist_head paths;
2990 	struct got_checkout_progress_arg cpa;
2991 	int *pack_fds = NULL;
2992 
2993 	TAILQ_INIT(&paths);
2994 
2995 #ifndef PROFILE
2996 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2997 	    "unveil", NULL) == -1)
2998 		err(1, "pledge");
2999 #endif
3000 
3001 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
3002 		switch (ch) {
3003 		case 'b':
3004 			branch_name = optarg;
3005 			break;
3006 		case 'c':
3007 			commit_id_str = strdup(optarg);
3008 			if (commit_id_str == NULL)
3009 				return got_error_from_errno("strdup");
3010 			break;
3011 		case 'E':
3012 			allow_nonempty = 1;
3013 			break;
3014 		case 'p':
3015 			path_prefix = optarg;
3016 			break;
3017 		case 'q':
3018 			verbosity = -1;
3019 			break;
3020 		default:
3021 			usage_checkout();
3022 			/* NOTREACHED */
3023 		}
3024 	}
3025 
3026 	argc -= optind;
3027 	argv += optind;
3028 
3029 	if (argc == 1) {
3030 		char *base, *dotgit;
3031 		const char *path;
3032 		repo_path = realpath(argv[0], NULL);
3033 		if (repo_path == NULL)
3034 			return got_error_from_errno2("realpath", argv[0]);
3035 		cwd = getcwd(NULL, 0);
3036 		if (cwd == NULL) {
3037 			error = got_error_from_errno("getcwd");
3038 			goto done;
3039 		}
3040 		if (path_prefix[0])
3041 			path = path_prefix;
3042 		else
3043 			path = repo_path;
3044 		error = got_path_basename(&base, path);
3045 		if (error)
3046 			goto done;
3047 		dotgit = strstr(base, ".git");
3048 		if (dotgit)
3049 			*dotgit = '\0';
3050 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
3051 			error = got_error_from_errno("asprintf");
3052 			free(base);
3053 			goto done;
3054 		}
3055 		free(base);
3056 	} else if (argc == 2) {
3057 		repo_path = realpath(argv[0], NULL);
3058 		if (repo_path == NULL) {
3059 			error = got_error_from_errno2("realpath", argv[0]);
3060 			goto done;
3061 		}
3062 		worktree_path = realpath(argv[1], NULL);
3063 		if (worktree_path == NULL) {
3064 			if (errno != ENOENT) {
3065 				error = got_error_from_errno2("realpath",
3066 				    argv[1]);
3067 				goto done;
3068 			}
3069 			worktree_path = strdup(argv[1]);
3070 			if (worktree_path == NULL) {
3071 				error = got_error_from_errno("strdup");
3072 				goto done;
3073 			}
3074 		}
3075 	} else
3076 		usage_checkout();
3077 
3078 	got_path_strip_trailing_slashes(repo_path);
3079 	got_path_strip_trailing_slashes(worktree_path);
3080 
3081 	error = got_repo_pack_fds_open(&pack_fds);
3082 	if (error != NULL)
3083 		goto done;
3084 
3085 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
3086 	if (error != NULL)
3087 		goto done;
3088 
3089 	/* Pre-create work tree path for unveil(2) */
3090 	error = got_path_mkdir(worktree_path);
3091 	if (error) {
3092 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
3093 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3094 			goto done;
3095 		if (!allow_nonempty &&
3096 		    !got_path_dir_is_empty(worktree_path)) {
3097 			error = got_error_path(worktree_path,
3098 			    GOT_ERR_DIR_NOT_EMPTY);
3099 			goto done;
3100 		}
3101 	}
3102 
3103 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
3104 	if (error)
3105 		goto done;
3106 
3107 	error = got_ref_open(&head_ref, repo, branch_name, 0);
3108 	if (error != NULL)
3109 		goto done;
3110 
3111 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
3112 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3113 		goto done;
3114 
3115 	error = got_worktree_open(&worktree, worktree_path);
3116 	if (error != NULL)
3117 		goto done;
3118 
3119 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
3120 	    path_prefix);
3121 	if (error != NULL)
3122 		goto done;
3123 	if (!same_path_prefix) {
3124 		error = got_error(GOT_ERR_PATH_PREFIX);
3125 		goto done;
3126 	}
3127 
3128 	if (commit_id_str) {
3129 		struct got_reflist_head refs;
3130 		TAILQ_INIT(&refs);
3131 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3132 		    NULL);
3133 		if (error)
3134 			goto done;
3135 		error = got_repo_match_object_id(&commit_id, NULL,
3136 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3137 		got_ref_list_free(&refs);
3138 		if (error)
3139 			goto done;
3140 		error = check_linear_ancestry(commit_id,
3141 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3142 		if (error != NULL) {
3143 			if (error->code == GOT_ERR_ANCESTRY) {
3144 				error = checkout_ancestry_error(
3145 				    head_ref, commit_id_str);
3146 			}
3147 			goto done;
3148 		}
3149 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3150 		if (error) {
3151 			if (error->code == GOT_ERR_ANCESTRY) {
3152 				error = checkout_ancestry_error(
3153 				    head_ref, commit_id_str);
3154 			}
3155 			goto done;
3156 		}
3157 		error = got_worktree_set_base_commit_id(worktree, repo,
3158 		    commit_id);
3159 		if (error)
3160 			goto done;
3161 		/* Expand potentially abbreviated commit ID string. */
3162 		free(commit_id_str);
3163 		error = got_object_id_str(&commit_id_str, commit_id);
3164 		if (error)
3165 			goto done;
3166 	} else {
3167 		commit_id = got_object_id_dup(
3168 		    got_worktree_get_base_commit_id(worktree));
3169 		if (commit_id == NULL) {
3170 			error = got_error_from_errno("got_object_id_dup");
3171 			goto done;
3172 		}
3173 		error = got_object_id_str(&commit_id_str, commit_id);
3174 		if (error)
3175 			goto done;
3176 	}
3177 
3178 	error = got_pathlist_append(&paths, "", NULL);
3179 	if (error)
3180 		goto done;
3181 	cpa.worktree_path = worktree_path;
3182 	cpa.had_base_commit_ref_error = 0;
3183 	cpa.verbosity = verbosity;
3184 	error = got_worktree_checkout_files(worktree, &paths, repo,
3185 	    checkout_progress, &cpa, check_cancelled, NULL);
3186 	if (error != NULL)
3187 		goto done;
3188 
3189 	if (got_ref_is_symbolic(head_ref)) {
3190 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3191 		if (error)
3192 			goto done;
3193 		refname = got_ref_get_name(ref);
3194 	} else
3195 		refname = got_ref_get_name(head_ref);
3196 	printf("Checked out %s: %s\n", refname, commit_id_str);
3197 	printf("Now shut up and hack\n");
3198 	if (cpa.had_base_commit_ref_error)
3199 		show_worktree_base_ref_warning();
3200 done:
3201 	if (pack_fds) {
3202 		const struct got_error *pack_err =
3203 		    got_repo_pack_fds_close(pack_fds);
3204 		if (error == NULL)
3205 			error = pack_err;
3206 	}
3207 	if (head_ref)
3208 		got_ref_close(head_ref);
3209 	if (ref)
3210 		got_ref_close(ref);
3211 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
3212 	free(commit_id_str);
3213 	free(commit_id);
3214 	free(repo_path);
3215 	free(worktree_path);
3216 	free(cwd);
3217 	return error;
3218 }
3219 
3220 struct got_update_progress_arg {
3221 	int did_something;
3222 	int conflicts;
3223 	int obstructed;
3224 	int not_updated;
3225 	int missing;
3226 	int not_deleted;
3227 	int unversioned;
3228 	int verbosity;
3229 };
3230 
3231 static void
3232 print_update_progress_stats(struct got_update_progress_arg *upa)
3233 {
3234 	if (!upa->did_something)
3235 		return;
3236 
3237 	if (upa->conflicts > 0)
3238 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3239 	if (upa->obstructed > 0)
3240 		printf("File paths obstructed by a non-regular file: %d\n",
3241 		    upa->obstructed);
3242 	if (upa->not_updated > 0)
3243 		printf("Files not updated because of existing merge "
3244 		    "conflicts: %d\n", upa->not_updated);
3245 }
3246 
3247 /*
3248  * The meaning of some status codes differs between merge-style operations and
3249  * update operations. For example, the ! status code means "file was missing"
3250  * if changes were merged into the work tree, and "missing file was restored"
3251  * if the work tree was updated. This function should be used by any operation
3252  * which merges changes into the work tree without updating the work tree.
3253  */
3254 static void
3255 print_merge_progress_stats(struct got_update_progress_arg *upa)
3256 {
3257 	if (!upa->did_something)
3258 		return;
3259 
3260 	if (upa->conflicts > 0)
3261 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3262 	if (upa->obstructed > 0)
3263 		printf("File paths obstructed by a non-regular file: %d\n",
3264 		    upa->obstructed);
3265 	if (upa->missing > 0)
3266 		printf("Files which had incoming changes but could not be "
3267 		    "found in the work tree: %d\n", upa->missing);
3268 	if (upa->not_deleted > 0)
3269 		printf("Files not deleted due to differences in deleted "
3270 		    "content: %d\n", upa->not_deleted);
3271 	if (upa->unversioned > 0)
3272 		printf("Files not merged because an unversioned file was "
3273 		    "found in the work tree: %d\n", upa->unversioned);
3274 }
3275 
3276 __dead static void
3277 usage_update(void)
3278 {
3279 	fprintf(stderr, "usage: %s update [-q] [-b branch] [-c commit] "
3280 	    "[path ...]\n", getprogname());
3281 	exit(1);
3282 }
3283 
3284 static const struct got_error *
3285 update_progress(void *arg, unsigned char status, const char *path)
3286 {
3287 	struct got_update_progress_arg *upa = arg;
3288 
3289 	if (status == GOT_STATUS_EXISTS ||
3290 	    status == GOT_STATUS_BASE_REF_ERR)
3291 		return NULL;
3292 
3293 	upa->did_something = 1;
3294 
3295 	/* Base commit bump happens silently. */
3296 	if (status == GOT_STATUS_BUMP_BASE)
3297 		return NULL;
3298 
3299 	if (status == GOT_STATUS_CONFLICT)
3300 		upa->conflicts++;
3301 	if (status == GOT_STATUS_OBSTRUCTED)
3302 		upa->obstructed++;
3303 	if (status == GOT_STATUS_CANNOT_UPDATE)
3304 		upa->not_updated++;
3305 	if (status == GOT_STATUS_MISSING)
3306 		upa->missing++;
3307 	if (status == GOT_STATUS_CANNOT_DELETE)
3308 		upa->not_deleted++;
3309 	if (status == GOT_STATUS_UNVERSIONED)
3310 		upa->unversioned++;
3311 
3312 	while (path[0] == '/')
3313 		path++;
3314 	if (upa->verbosity >= 0)
3315 		printf("%c  %s\n", status, path);
3316 
3317 	return NULL;
3318 }
3319 
3320 static const struct got_error *
3321 switch_head_ref(struct got_reference *head_ref,
3322     struct got_object_id *commit_id, struct got_worktree *worktree,
3323     struct got_repository *repo)
3324 {
3325 	const struct got_error *err = NULL;
3326 	char *base_id_str;
3327 	int ref_has_moved = 0;
3328 
3329 	/* Trivial case: switching between two different references. */
3330 	if (strcmp(got_ref_get_name(head_ref),
3331 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3332 		printf("Switching work tree from %s to %s\n",
3333 		    got_worktree_get_head_ref_name(worktree),
3334 		    got_ref_get_name(head_ref));
3335 		return got_worktree_set_head_ref(worktree, head_ref);
3336 	}
3337 
3338 	err = check_linear_ancestry(commit_id,
3339 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3340 	if (err) {
3341 		if (err->code != GOT_ERR_ANCESTRY)
3342 			return err;
3343 		ref_has_moved = 1;
3344 	}
3345 	if (!ref_has_moved)
3346 		return NULL;
3347 
3348 	/* Switching to a rebased branch with the same reference name. */
3349 	err = got_object_id_str(&base_id_str,
3350 	    got_worktree_get_base_commit_id(worktree));
3351 	if (err)
3352 		return err;
3353 	printf("Reference %s now points at a different branch\n",
3354 	    got_worktree_get_head_ref_name(worktree));
3355 	printf("Switching work tree from %s to %s\n", base_id_str,
3356 	    got_worktree_get_head_ref_name(worktree));
3357 	return NULL;
3358 }
3359 
3360 static const struct got_error *
3361 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3362 {
3363 	const struct got_error *err;
3364 	int in_progress;
3365 
3366 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3367 	if (err)
3368 		return err;
3369 	if (in_progress)
3370 		return got_error(GOT_ERR_REBASING);
3371 
3372 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3373 	if (err)
3374 		return err;
3375 	if (in_progress)
3376 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3377 
3378 	return NULL;
3379 }
3380 
3381 static const struct got_error *
3382 check_merge_in_progress(struct got_worktree *worktree,
3383     struct got_repository *repo)
3384 {
3385 	const struct got_error *err;
3386 	int in_progress;
3387 
3388 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3389 	if (err)
3390 		return err;
3391 	if (in_progress)
3392 		return got_error(GOT_ERR_MERGE_BUSY);
3393 
3394 	return NULL;
3395 }
3396 
3397 static const struct got_error *
3398 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3399     char *argv[], struct got_worktree *worktree)
3400 {
3401 	const struct got_error *err = NULL;
3402 	char *path;
3403 	struct got_pathlist_entry *new;
3404 	int i;
3405 
3406 	if (argc == 0) {
3407 		path = strdup("");
3408 		if (path == NULL)
3409 			return got_error_from_errno("strdup");
3410 		return got_pathlist_append(paths, path, NULL);
3411 	}
3412 
3413 	for (i = 0; i < argc; i++) {
3414 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3415 		if (err)
3416 			break;
3417 		err = got_pathlist_insert(&new, paths, path, NULL);
3418 		if (err || new == NULL /* duplicate */) {
3419 			free(path);
3420 			if (err)
3421 				break;
3422 		}
3423 	}
3424 
3425 	return err;
3426 }
3427 
3428 static const struct got_error *
3429 wrap_not_worktree_error(const struct got_error *orig_err,
3430     const char *cmdname, const char *path)
3431 {
3432 	const struct got_error *err;
3433 	struct got_repository *repo;
3434 	static char msg[512];
3435 	int *pack_fds = NULL;
3436 
3437 	err = got_repo_pack_fds_open(&pack_fds);
3438 	if (err)
3439 		return err;
3440 
3441 	err = got_repo_open(&repo, path, NULL, pack_fds);
3442 	if (err)
3443 		return orig_err;
3444 
3445 	snprintf(msg, sizeof(msg),
3446 	    "'got %s' needs a work tree in addition to a git repository\n"
3447 	    "Work trees can be checked out from this Git repository with "
3448 	    "'got checkout'.\n"
3449 	    "The got(1) manual page contains more information.", cmdname);
3450 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3451 	got_repo_close(repo);
3452 	if (pack_fds) {
3453 		const struct got_error *pack_err =
3454 		    got_repo_pack_fds_close(pack_fds);
3455 		if (err == NULL)
3456 			err = pack_err;
3457 	}
3458 	return err;
3459 }
3460 
3461 static const struct got_error *
3462 cmd_update(int argc, char *argv[])
3463 {
3464 	const struct got_error *error = NULL;
3465 	struct got_repository *repo = NULL;
3466 	struct got_worktree *worktree = NULL;
3467 	char *worktree_path = NULL;
3468 	struct got_object_id *commit_id = NULL;
3469 	char *commit_id_str = NULL;
3470 	const char *branch_name = NULL;
3471 	struct got_reference *head_ref = NULL;
3472 	struct got_pathlist_head paths;
3473 	struct got_pathlist_entry *pe;
3474 	int ch, verbosity = 0;
3475 	struct got_update_progress_arg upa;
3476 	int *pack_fds = NULL;
3477 
3478 	TAILQ_INIT(&paths);
3479 
3480 #ifndef PROFILE
3481 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3482 	    "unveil", NULL) == -1)
3483 		err(1, "pledge");
3484 #endif
3485 
3486 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3487 		switch (ch) {
3488 		case 'b':
3489 			branch_name = optarg;
3490 			break;
3491 		case 'c':
3492 			commit_id_str = strdup(optarg);
3493 			if (commit_id_str == NULL)
3494 				return got_error_from_errno("strdup");
3495 			break;
3496 		case 'q':
3497 			verbosity = -1;
3498 			break;
3499 		default:
3500 			usage_update();
3501 			/* NOTREACHED */
3502 		}
3503 	}
3504 
3505 	argc -= optind;
3506 	argv += optind;
3507 
3508 	worktree_path = getcwd(NULL, 0);
3509 	if (worktree_path == NULL) {
3510 		error = got_error_from_errno("getcwd");
3511 		goto done;
3512 	}
3513 
3514 	error = got_repo_pack_fds_open(&pack_fds);
3515 	if (error != NULL)
3516 		goto done;
3517 
3518 	error = got_worktree_open(&worktree, worktree_path);
3519 	if (error) {
3520 		if (error->code == GOT_ERR_NOT_WORKTREE)
3521 			error = wrap_not_worktree_error(error, "update",
3522 			    worktree_path);
3523 		goto done;
3524 	}
3525 
3526 	error = check_rebase_or_histedit_in_progress(worktree);
3527 	if (error)
3528 		goto done;
3529 
3530 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3531 	    NULL, pack_fds);
3532 	if (error != NULL)
3533 		goto done;
3534 
3535 	error = apply_unveil(got_repo_get_path(repo), 0,
3536 	    got_worktree_get_root_path(worktree));
3537 	if (error)
3538 		goto done;
3539 
3540 	error = check_merge_in_progress(worktree, repo);
3541 	if (error)
3542 		goto done;
3543 
3544 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3545 	if (error)
3546 		goto done;
3547 
3548 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3549 	    got_worktree_get_head_ref_name(worktree), 0);
3550 	if (error != NULL)
3551 		goto done;
3552 	if (commit_id_str == NULL) {
3553 		error = got_ref_resolve(&commit_id, repo, head_ref);
3554 		if (error != NULL)
3555 			goto done;
3556 		error = got_object_id_str(&commit_id_str, commit_id);
3557 		if (error != NULL)
3558 			goto done;
3559 	} else {
3560 		struct got_reflist_head refs;
3561 		TAILQ_INIT(&refs);
3562 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3563 		    NULL);
3564 		if (error)
3565 			goto done;
3566 		error = got_repo_match_object_id(&commit_id, NULL,
3567 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3568 		got_ref_list_free(&refs);
3569 		free(commit_id_str);
3570 		commit_id_str = NULL;
3571 		if (error)
3572 			goto done;
3573 		error = got_object_id_str(&commit_id_str, commit_id);
3574 		if (error)
3575 			goto done;
3576 	}
3577 
3578 	if (branch_name) {
3579 		struct got_object_id *head_commit_id;
3580 		TAILQ_FOREACH(pe, &paths, entry) {
3581 			if (pe->path_len == 0)
3582 				continue;
3583 			error = got_error_msg(GOT_ERR_BAD_PATH,
3584 			    "switching between branches requires that "
3585 			    "the entire work tree gets updated");
3586 			goto done;
3587 		}
3588 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3589 		if (error)
3590 			goto done;
3591 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3592 		    repo);
3593 		free(head_commit_id);
3594 		if (error != NULL)
3595 			goto done;
3596 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3597 		if (error)
3598 			goto done;
3599 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3600 		if (error)
3601 			goto done;
3602 	} else {
3603 		error = check_linear_ancestry(commit_id,
3604 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3605 		if (error != NULL) {
3606 			if (error->code == GOT_ERR_ANCESTRY)
3607 				error = got_error(GOT_ERR_BRANCH_MOVED);
3608 			goto done;
3609 		}
3610 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3611 		if (error)
3612 			goto done;
3613 	}
3614 
3615 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3616 	    commit_id) != 0) {
3617 		error = got_worktree_set_base_commit_id(worktree, repo,
3618 		    commit_id);
3619 		if (error)
3620 			goto done;
3621 	}
3622 
3623 	memset(&upa, 0, sizeof(upa));
3624 	upa.verbosity = verbosity;
3625 	error = got_worktree_checkout_files(worktree, &paths, repo,
3626 	    update_progress, &upa, check_cancelled, NULL);
3627 	if (error != NULL)
3628 		goto done;
3629 
3630 	if (upa.did_something) {
3631 		printf("Updated to %s: %s\n",
3632 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3633 	} else
3634 		printf("Already up-to-date\n");
3635 
3636 	print_update_progress_stats(&upa);
3637 done:
3638 	if (pack_fds) {
3639 		const struct got_error *pack_err =
3640 		    got_repo_pack_fds_close(pack_fds);
3641 		if (error == NULL)
3642 			error = pack_err;
3643 	}
3644 	free(worktree_path);
3645 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
3646 	free(commit_id);
3647 	free(commit_id_str);
3648 	return error;
3649 }
3650 
3651 static const struct got_error *
3652 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3653     const char *path, int diff_context, int ignore_whitespace,
3654     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3655     struct got_repository *repo, FILE *outfile)
3656 {
3657 	const struct got_error *err = NULL;
3658 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3659 	FILE *f1 = NULL, *f2 = NULL;
3660 	int fd1 = -1, fd2 = -1;
3661 
3662 	fd1 = got_opentempfd();
3663 	if (fd1 == -1)
3664 		return got_error_from_errno("got_opentempfd");
3665 	fd2 = got_opentempfd();
3666 	if (fd2 == -1) {
3667 		err = got_error_from_errno("got_opentempfd");
3668 		goto done;
3669 	}
3670 
3671 	if (blob_id1) {
3672 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3673 		    fd1);
3674 		if (err)
3675 			goto done;
3676 	}
3677 
3678 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3679 	if (err)
3680 		goto done;
3681 
3682 	f1 = got_opentemp();
3683 	if (f1 == NULL) {
3684 		err = got_error_from_errno("got_opentemp");
3685 		goto done;
3686 	}
3687 	f2 = got_opentemp();
3688 	if (f2 == NULL) {
3689 		err = got_error_from_errno("got_opentemp");
3690 		goto done;
3691 	}
3692 
3693 	while (path[0] == '/')
3694 		path++;
3695 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3696 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3697 	    force_text_diff, dsa, outfile);
3698 done:
3699 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3700 		err = got_error_from_errno("close");
3701 	if (blob1)
3702 		got_object_blob_close(blob1);
3703 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3704 		err = got_error_from_errno("close");
3705 	got_object_blob_close(blob2);
3706 	if (f1 && fclose(f1) == EOF && err == NULL)
3707 		err = got_error_from_errno("fclose");
3708 	if (f2 && fclose(f2) == EOF && err == NULL)
3709 		err = got_error_from_errno("fclose");
3710 	return err;
3711 }
3712 
3713 static const struct got_error *
3714 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3715     const char *path, int diff_context, int ignore_whitespace,
3716     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3717     struct got_repository *repo, FILE *outfile)
3718 {
3719 	const struct got_error *err = NULL;
3720 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3721 	struct got_diff_blob_output_unidiff_arg arg;
3722 	FILE *f1 = NULL, *f2 = NULL;
3723 	int fd1 = -1, fd2 = -1;
3724 
3725 	if (tree_id1) {
3726 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3727 		if (err)
3728 			goto done;
3729 		fd1 = got_opentempfd();
3730 		if (fd1 == -1) {
3731 			err = got_error_from_errno("got_opentempfd");
3732 			goto done;
3733 		}
3734 	}
3735 
3736 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3737 	if (err)
3738 		goto done;
3739 
3740 	f1 = got_opentemp();
3741 	if (f1 == NULL) {
3742 		err = got_error_from_errno("got_opentemp");
3743 		goto done;
3744 	}
3745 
3746 	f2 = got_opentemp();
3747 	if (f2 == NULL) {
3748 		err = got_error_from_errno("got_opentemp");
3749 		goto done;
3750 	}
3751 	fd2 = got_opentempfd();
3752 	if (fd2 == -1) {
3753 		err = got_error_from_errno("got_opentempfd");
3754 		goto done;
3755 	}
3756 	arg.diff_context = diff_context;
3757 	arg.ignore_whitespace = ignore_whitespace;
3758 	arg.force_text_diff = force_text_diff;
3759 	arg.diffstat = dsa;
3760 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3761 	arg.outfile = outfile;
3762 	arg.lines = NULL;
3763 	arg.nlines = 0;
3764 	while (path[0] == '/')
3765 		path++;
3766 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3767 	    got_diff_blob_output_unidiff, &arg, 1);
3768 done:
3769 	if (tree1)
3770 		got_object_tree_close(tree1);
3771 	if (tree2)
3772 		got_object_tree_close(tree2);
3773 	if (f1 && fclose(f1) == EOF && err == NULL)
3774 		err = got_error_from_errno("fclose");
3775 	if (f2 && fclose(f2) == EOF && err == NULL)
3776 		err = got_error_from_errno("fclose");
3777 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3778 		err = got_error_from_errno("close");
3779 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3780 		err = got_error_from_errno("close");
3781 	return err;
3782 }
3783 
3784 static const struct got_error *
3785 get_changed_paths(struct got_pathlist_head *paths,
3786     struct got_commit_object *commit, struct got_repository *repo,
3787     struct got_diffstat_cb_arg *dsa)
3788 {
3789 	const struct got_error *err = NULL;
3790 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3791 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3792 	struct got_object_qid *qid;
3793 	got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
3794 	FILE *f1 = NULL, *f2 = NULL;
3795 	int fd1 = -1, fd2 = -1;
3796 
3797 	if (dsa) {
3798 		cb = got_diff_tree_compute_diffstat;
3799 
3800 		f1 = got_opentemp();
3801 		if (f1 == NULL) {
3802 			err = got_error_from_errno("got_opentemp");
3803 			goto done;
3804 		}
3805 		f2 = got_opentemp();
3806 		if (f2 == NULL) {
3807 			err = got_error_from_errno("got_opentemp");
3808 			goto done;
3809 		}
3810 		fd1 = got_opentempfd();
3811 		if (fd1 == -1) {
3812 			err = got_error_from_errno("got_opentempfd");
3813 			goto done;
3814 		}
3815 		fd2 = got_opentempfd();
3816 		if (fd2 == -1) {
3817 			err = got_error_from_errno("got_opentempfd");
3818 			goto done;
3819 		}
3820 	}
3821 
3822 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3823 	if (qid != NULL) {
3824 		struct got_commit_object *pcommit;
3825 		err = got_object_open_as_commit(&pcommit, repo,
3826 		    &qid->id);
3827 		if (err)
3828 			return err;
3829 
3830 		tree_id1 = got_object_id_dup(
3831 		    got_object_commit_get_tree_id(pcommit));
3832 		if (tree_id1 == NULL) {
3833 			got_object_commit_close(pcommit);
3834 			return got_error_from_errno("got_object_id_dup");
3835 		}
3836 		got_object_commit_close(pcommit);
3837 
3838 	}
3839 
3840 	if (tree_id1) {
3841 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3842 		if (err)
3843 			goto done;
3844 	}
3845 
3846 	tree_id2 = got_object_commit_get_tree_id(commit);
3847 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3848 	if (err)
3849 		goto done;
3850 
3851 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
3852 	    cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
3853 done:
3854 	if (tree1)
3855 		got_object_tree_close(tree1);
3856 	if (tree2)
3857 		got_object_tree_close(tree2);
3858 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3859 		err = got_error_from_errno("close");
3860 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3861 		err = got_error_from_errno("close");
3862 	if (f1 && fclose(f1) == EOF && err == NULL)
3863 		err = got_error_from_errno("fclose");
3864 	if (f2 && fclose(f2) == EOF && err == NULL)
3865 		err = got_error_from_errno("fclose");
3866 	free(tree_id1);
3867 	return err;
3868 }
3869 
3870 static const struct got_error *
3871 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3872     const char *path, int diff_context, struct got_diffstat_cb_arg *dsa,
3873     struct got_repository *repo, FILE *outfile)
3874 {
3875 	const struct got_error *err = NULL;
3876 	struct got_commit_object *pcommit = NULL;
3877 	char *id_str1 = NULL, *id_str2 = NULL;
3878 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3879 	struct got_object_qid *qid;
3880 
3881 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3882 	if (qid != NULL) {
3883 		err = got_object_open_as_commit(&pcommit, repo,
3884 		    &qid->id);
3885 		if (err)
3886 			return err;
3887 		err = got_object_id_str(&id_str1, &qid->id);
3888 		if (err)
3889 			goto done;
3890 	}
3891 
3892 	err = got_object_id_str(&id_str2, id);
3893 	if (err)
3894 		goto done;
3895 
3896 	if (path && path[0] != '\0') {
3897 		int obj_type;
3898 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3899 		if (err)
3900 			goto done;
3901 		if (pcommit) {
3902 			err = got_object_id_by_path(&obj_id1, repo,
3903 			    pcommit, path);
3904 			if (err) {
3905 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3906 					free(obj_id2);
3907 					goto done;
3908 				}
3909 			}
3910 		}
3911 		err = got_object_get_type(&obj_type, repo, obj_id2);
3912 		if (err) {
3913 			free(obj_id2);
3914 			goto done;
3915 		}
3916 		fprintf(outfile,
3917 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3918 		fprintf(outfile, "commit - %s\n",
3919 		    id_str1 ? id_str1 : "/dev/null");
3920 		fprintf(outfile, "commit + %s\n", id_str2);
3921 		switch (obj_type) {
3922 		case GOT_OBJ_TYPE_BLOB:
3923 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3924 			    0, 0, dsa, repo, outfile);
3925 			break;
3926 		case GOT_OBJ_TYPE_TREE:
3927 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3928 			    0, 0, dsa, repo, outfile);
3929 			break;
3930 		default:
3931 			err = got_error(GOT_ERR_OBJ_TYPE);
3932 			break;
3933 		}
3934 		free(obj_id1);
3935 		free(obj_id2);
3936 	} else {
3937 		obj_id2 = got_object_commit_get_tree_id(commit);
3938 		if (pcommit)
3939 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3940 		fprintf(outfile,
3941 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3942 		fprintf(outfile, "commit - %s\n",
3943 		    id_str1 ? id_str1 : "/dev/null");
3944 		fprintf(outfile, "commit + %s\n", id_str2);
3945 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3946 		    dsa, repo, outfile);
3947 	}
3948 done:
3949 	free(id_str1);
3950 	free(id_str2);
3951 	if (pcommit)
3952 		got_object_commit_close(pcommit);
3953 	return err;
3954 }
3955 
3956 static char *
3957 get_datestr(time_t *time, char *datebuf)
3958 {
3959 	struct tm mytm, *tm;
3960 	char *p, *s;
3961 
3962 	tm = gmtime_r(time, &mytm);
3963 	if (tm == NULL)
3964 		return NULL;
3965 	s = asctime_r(tm, datebuf);
3966 	if (s == NULL)
3967 		return NULL;
3968 	p = strchr(s, '\n');
3969 	if (p)
3970 		*p = '\0';
3971 	return s;
3972 }
3973 
3974 static const struct got_error *
3975 match_commit(int *have_match, struct got_object_id *id,
3976     struct got_commit_object *commit, regex_t *regex)
3977 {
3978 	const struct got_error *err = NULL;
3979 	regmatch_t regmatch;
3980 	char *id_str = NULL, *logmsg = NULL;
3981 
3982 	*have_match = 0;
3983 
3984 	err = got_object_id_str(&id_str, id);
3985 	if (err)
3986 		return err;
3987 
3988 	err = got_object_commit_get_logmsg(&logmsg, commit);
3989 	if (err)
3990 		goto done;
3991 
3992 	if (regexec(regex, got_object_commit_get_author(commit), 1,
3993 	    &regmatch, 0) == 0 ||
3994 	    regexec(regex, got_object_commit_get_committer(commit), 1,
3995 	    &regmatch, 0) == 0 ||
3996 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
3997 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3998 		*have_match = 1;
3999 done:
4000 	free(id_str);
4001 	free(logmsg);
4002 	return err;
4003 }
4004 
4005 static void
4006 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
4007     regex_t *regex)
4008 {
4009 	regmatch_t regmatch;
4010 	struct got_pathlist_entry *pe;
4011 
4012 	*have_match = 0;
4013 
4014 	TAILQ_FOREACH(pe, changed_paths, entry) {
4015 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
4016 			*have_match = 1;
4017 			break;
4018 		}
4019 	}
4020 }
4021 
4022 static const struct got_error *
4023 match_patch(int *have_match, struct got_commit_object *commit,
4024     struct got_object_id *id, const char *path, int diff_context,
4025     struct got_repository *repo, regex_t *regex, FILE *f)
4026 {
4027 	const struct got_error *err = NULL;
4028 	char *line = NULL;
4029 	size_t linesize = 0;
4030 	regmatch_t regmatch;
4031 
4032 	*have_match = 0;
4033 
4034 	err = got_opentemp_truncate(f);
4035 	if (err)
4036 		return err;
4037 
4038 	err = print_patch(commit, id, path, diff_context, NULL, repo, f);
4039 	if (err)
4040 		goto done;
4041 
4042 	if (fseeko(f, 0L, SEEK_SET) == -1) {
4043 		err = got_error_from_errno("fseeko");
4044 		goto done;
4045 	}
4046 
4047 	while (getline(&line, &linesize, f) != -1) {
4048 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
4049 			*have_match = 1;
4050 			break;
4051 		}
4052 	}
4053 done:
4054 	free(line);
4055 	return err;
4056 }
4057 
4058 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
4059 
4060 static const struct got_error*
4061 build_refs_str(char **refs_str, struct got_reflist_head *refs,
4062     struct got_object_id *id, struct got_repository *repo,
4063     int local_only)
4064 {
4065 	static const struct got_error *err = NULL;
4066 	struct got_reflist_entry *re;
4067 	char *s;
4068 	const char *name;
4069 
4070 	*refs_str = NULL;
4071 
4072 	TAILQ_FOREACH(re, refs, entry) {
4073 		struct got_tag_object *tag = NULL;
4074 		struct got_object_id *ref_id;
4075 		int cmp;
4076 
4077 		name = got_ref_get_name(re->ref);
4078 		if (strcmp(name, GOT_REF_HEAD) == 0)
4079 			continue;
4080 		if (strncmp(name, "refs/", 5) == 0)
4081 			name += 5;
4082 		if (strncmp(name, "got/", 4) == 0)
4083 			continue;
4084 		if (strncmp(name, "heads/", 6) == 0)
4085 			name += 6;
4086 		if (strncmp(name, "remotes/", 8) == 0) {
4087 			if (local_only)
4088 				continue;
4089 			name += 8;
4090 			s = strstr(name, "/" GOT_REF_HEAD);
4091 			if (s != NULL && s[strlen(s)] == '\0')
4092 				continue;
4093 		}
4094 		err = got_ref_resolve(&ref_id, repo, re->ref);
4095 		if (err)
4096 			break;
4097 		if (strncmp(name, "tags/", 5) == 0) {
4098 			err = got_object_open_as_tag(&tag, repo, ref_id);
4099 			if (err) {
4100 				if (err->code != GOT_ERR_OBJ_TYPE) {
4101 					free(ref_id);
4102 					break;
4103 				}
4104 				/* Ref points at something other than a tag. */
4105 				err = NULL;
4106 				tag = NULL;
4107 			}
4108 		}
4109 		cmp = got_object_id_cmp(tag ?
4110 		    got_object_tag_get_object_id(tag) : ref_id, id);
4111 		free(ref_id);
4112 		if (tag)
4113 			got_object_tag_close(tag);
4114 		if (cmp != 0)
4115 			continue;
4116 		s = *refs_str;
4117 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
4118 		    s ? ", " : "", name) == -1) {
4119 			err = got_error_from_errno("asprintf");
4120 			free(s);
4121 			*refs_str = NULL;
4122 			break;
4123 		}
4124 		free(s);
4125 	}
4126 
4127 	return err;
4128 }
4129 
4130 static const struct got_error *
4131 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
4132     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
4133 {
4134 	const struct got_error *err = NULL;
4135 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
4136 	char *comma, *s, *nl;
4137 	struct got_reflist_head *refs;
4138 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
4139 	struct tm tm;
4140 	time_t committer_time;
4141 
4142 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4143 	if (refs) {
4144 		err = build_refs_str(&ref_str, refs, id, repo, 1);
4145 		if (err)
4146 			return err;
4147 
4148 		/* Display the first matching ref only. */
4149 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
4150 			*comma = '\0';
4151 	}
4152 
4153 	if (ref_str == NULL) {
4154 		err = got_object_id_str(&id_str, id);
4155 		if (err)
4156 			return err;
4157 	}
4158 
4159 	committer_time = got_object_commit_get_committer_time(commit);
4160 	if (gmtime_r(&committer_time, &tm) == NULL) {
4161 		err = got_error_from_errno("gmtime_r");
4162 		goto done;
4163 	}
4164 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
4165 		err = got_error(GOT_ERR_NO_SPACE);
4166 		goto done;
4167 	}
4168 
4169 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4170 	if (err)
4171 		goto done;
4172 
4173 	s = logmsg0;
4174 	while (isspace((unsigned char)s[0]))
4175 		s++;
4176 
4177 	nl = strchr(s, '\n');
4178 	if (nl) {
4179 		*nl = '\0';
4180 	}
4181 
4182 	if (ref_str)
4183 		printf("%s%-7s %s\n", datebuf, ref_str, s);
4184 	else
4185 		printf("%s%.7s %s\n", datebuf, id_str, s);
4186 
4187 	if (fflush(stdout) != 0 && err == NULL)
4188 		err = got_error_from_errno("fflush");
4189 done:
4190 	free(id_str);
4191 	free(ref_str);
4192 	free(logmsg0);
4193 	return err;
4194 }
4195 
4196 static const struct got_error *
4197 print_diffstat(struct got_diffstat_cb_arg *dsa, const char *header)
4198 {
4199 	struct got_pathlist_entry *pe;
4200 
4201 	if (header != NULL)
4202 		printf("%s\n", header);
4203 
4204 	TAILQ_FOREACH(pe, dsa->paths, entry) {
4205 		struct got_diff_changed_path *cp = pe->data;
4206 		int pad = dsa->max_path_len - pe->path_len + 1;
4207 
4208 		printf(" %c  %s%*c | %*d+ %*d-\n", cp->status, pe->path, pad,
4209 		    ' ', dsa->add_cols + 1, cp->add, dsa->rm_cols + 1, cp->rm);
4210 	}
4211 	printf("\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
4212 	    dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
4213 	    dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
4214 
4215 	if (fflush(stdout) != 0)
4216 		return got_error_from_errno("fflush");
4217 
4218 	return NULL;
4219 }
4220 
4221 static const struct got_error *
4222 printfile(FILE *f)
4223 {
4224 	char	buf[8192];
4225 	size_t	r;
4226 
4227 	if (fseeko(f, 0L, SEEK_SET) == -1)
4228 		return got_error_from_errno("fseek");
4229 
4230 	for (;;) {
4231 		r = fread(buf, 1, sizeof(buf), f);
4232 		if (r == 0) {
4233 			if (ferror(f))
4234 				return got_error_from_errno("fread");
4235 			if (feof(f))
4236 				break;
4237 		}
4238 		if (fwrite(buf, 1, r, stdout) != r)
4239 			return got_ferror(stdout, GOT_ERR_IO);
4240 	}
4241 
4242 	return NULL;
4243 }
4244 
4245 static const struct got_error *
4246 print_commit(struct got_commit_object *commit, struct got_object_id *id,
4247     struct got_repository *repo, const char *path,
4248     struct got_pathlist_head *changed_paths,
4249     struct got_diffstat_cb_arg *diffstat, int show_patch, int diff_context,
4250     struct got_reflist_object_id_map *refs_idmap, const char *custom_refs_str,
4251     const char *prefix)
4252 {
4253 	const struct got_error *err = NULL;
4254 	FILE *f = NULL;
4255 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
4256 	char datebuf[26];
4257 	time_t committer_time;
4258 	const char *author, *committer;
4259 	char *refs_str = NULL;
4260 
4261 	err = got_object_id_str(&id_str, id);
4262 	if (err)
4263 		return err;
4264 
4265 	if (custom_refs_str == NULL) {
4266 		struct got_reflist_head *refs;
4267 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4268 		if (refs) {
4269 			err = build_refs_str(&refs_str, refs, id, repo, 0);
4270 			if (err)
4271 				goto done;
4272 		}
4273 	}
4274 
4275 	printf(GOT_COMMIT_SEP_STR);
4276 	if (custom_refs_str)
4277 		printf("%s %s (%s)\n", prefix ? prefix : "commit", id_str,
4278 		    custom_refs_str);
4279 	else
4280 		printf("%s %s%s%s%s\n", prefix ? prefix : "commit", id_str,
4281 		    refs_str ? " (" : "", refs_str ? refs_str : "",
4282 		    refs_str ? ")" : "");
4283 	free(id_str);
4284 	id_str = NULL;
4285 	free(refs_str);
4286 	refs_str = NULL;
4287 	printf("from: %s\n", got_object_commit_get_author(commit));
4288 	author = got_object_commit_get_author(commit);
4289 	committer = got_object_commit_get_committer(commit);
4290 	if (strcmp(author, committer) != 0)
4291 		printf("via: %s\n", committer);
4292 	committer_time = got_object_commit_get_committer_time(commit);
4293 	datestr = get_datestr(&committer_time, datebuf);
4294 	if (datestr)
4295 		printf("date: %s UTC\n", datestr);
4296 	if (got_object_commit_get_nparents(commit) > 1) {
4297 		const struct got_object_id_queue *parent_ids;
4298 		struct got_object_qid *qid;
4299 		int n = 1;
4300 		parent_ids = got_object_commit_get_parent_ids(commit);
4301 		STAILQ_FOREACH(qid, parent_ids, entry) {
4302 			err = got_object_id_str(&id_str, &qid->id);
4303 			if (err)
4304 				goto done;
4305 			printf("parent %d: %s\n", n++, id_str);
4306 			free(id_str);
4307 			id_str = NULL;
4308 		}
4309 	}
4310 
4311 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4312 	if (err)
4313 		goto done;
4314 
4315 	logmsg = logmsg0;
4316 	do {
4317 		line = strsep(&logmsg, "\n");
4318 		if (line)
4319 			printf(" %s\n", line);
4320 	} while (line);
4321 	free(logmsg0);
4322 
4323 	if (changed_paths && diffstat == NULL) {
4324 		struct got_pathlist_entry *pe;
4325 
4326 		TAILQ_FOREACH(pe, changed_paths, entry) {
4327 			struct got_diff_changed_path *cp = pe->data;
4328 
4329 			printf(" %c  %s\n", cp->status, pe->path);
4330 		}
4331 		printf("\n");
4332 	}
4333 	if (show_patch) {
4334 		if (diffstat) {
4335 			f = got_opentemp();
4336 			if (f == NULL) {
4337 				err = got_error_from_errno("got_opentemp");
4338 				goto done;
4339 			}
4340 		}
4341 
4342 		err = print_patch(commit, id, path, diff_context, diffstat,
4343 		    repo, diffstat == NULL ? stdout : f);
4344 		if (err)
4345 			goto done;
4346 	}
4347 	if (diffstat) {
4348 		err = print_diffstat(diffstat, NULL);
4349 		if (err)
4350 			goto done;
4351 		if (show_patch) {
4352 			err = printfile(f);
4353 			if (err)
4354 				goto done;
4355 		}
4356 	}
4357 	if (show_patch)
4358 		printf("\n");
4359 
4360 	if (fflush(stdout) != 0 && err == NULL)
4361 		err = got_error_from_errno("fflush");
4362 done:
4363 	if (f && fclose(f) == EOF && err == NULL)
4364 		err = got_error_from_errno("fclose");
4365 	free(id_str);
4366 	free(refs_str);
4367 	return err;
4368 }
4369 
4370 static const struct got_error *
4371 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
4372     struct got_repository *repo, const char *path, int show_changed_paths,
4373     int show_diffstat, int show_patch, const char *search_pattern,
4374     int diff_context, int limit, int log_branches, int reverse_display_order,
4375     struct got_reflist_object_id_map *refs_idmap, int one_line,
4376     FILE *tmpfile)
4377 {
4378 	const struct got_error *err;
4379 	struct got_commit_graph *graph;
4380 	regex_t regex;
4381 	int have_match;
4382 	struct got_object_id_queue reversed_commits;
4383 	struct got_object_qid *qid;
4384 	struct got_commit_object *commit;
4385 	struct got_pathlist_head changed_paths;
4386 
4387 	STAILQ_INIT(&reversed_commits);
4388 	TAILQ_INIT(&changed_paths);
4389 
4390 	if (search_pattern && regcomp(&regex, search_pattern,
4391 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
4392 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
4393 
4394 	err = got_commit_graph_open(&graph, path, !log_branches);
4395 	if (err)
4396 		return err;
4397 	err = got_commit_graph_iter_start(graph, root_id, repo,
4398 	    check_cancelled, NULL);
4399 	if (err)
4400 		goto done;
4401 	for (;;) {
4402 		struct got_object_id id;
4403 		struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4404 		    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4405 
4406 		if (sigint_received || sigpipe_received)
4407 			break;
4408 
4409 		err = got_commit_graph_iter_next(&id, graph, repo,
4410 		    check_cancelled, NULL);
4411 		if (err) {
4412 			if (err->code == GOT_ERR_ITER_COMPLETED)
4413 				err = NULL;
4414 			break;
4415 		}
4416 
4417 		err = got_object_open_as_commit(&commit, repo, &id);
4418 		if (err)
4419 			break;
4420 
4421 		if ((show_changed_paths || (show_diffstat && !show_patch))
4422 		    && !reverse_display_order) {
4423 			err = get_changed_paths(&changed_paths, commit, repo,
4424 			    show_diffstat ? &dsa : NULL);
4425 			if (err)
4426 				break;
4427 		}
4428 
4429 		if (search_pattern) {
4430 			err = match_commit(&have_match, &id, commit, &regex);
4431 			if (err) {
4432 				got_object_commit_close(commit);
4433 				break;
4434 			}
4435 			if (have_match == 0 && show_changed_paths)
4436 				match_changed_paths(&have_match,
4437 				    &changed_paths, &regex);
4438 			if (have_match == 0 && show_patch) {
4439 				err = match_patch(&have_match, commit, &id,
4440 				    path, diff_context, repo, &regex, tmpfile);
4441 				if (err)
4442 					break;
4443 			}
4444 			if (have_match == 0) {
4445 				got_object_commit_close(commit);
4446 				got_pathlist_free(&changed_paths,
4447 				    GOT_PATHLIST_FREE_ALL);
4448 				continue;
4449 			}
4450 		}
4451 
4452 		if (reverse_display_order) {
4453 			err = got_object_qid_alloc(&qid, &id);
4454 			if (err)
4455 				break;
4456 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
4457 			got_object_commit_close(commit);
4458 		} else {
4459 			if (one_line)
4460 				err = print_commit_oneline(commit, &id,
4461 				    repo, refs_idmap);
4462 			else
4463 				err = print_commit(commit, &id, repo, path,
4464 				    (show_changed_paths || show_diffstat) ?
4465 				    &changed_paths : NULL,
4466 				    show_diffstat ? &dsa : NULL, show_patch,
4467 				    diff_context, refs_idmap, NULL, NULL);
4468 			got_object_commit_close(commit);
4469 			if (err)
4470 				break;
4471 		}
4472 		if ((limit && --limit == 0) ||
4473 		    (end_id && got_object_id_cmp(&id, end_id) == 0))
4474 			break;
4475 
4476 		got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4477 	}
4478 	if (reverse_display_order) {
4479 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4480 			struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4481 			    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4482 
4483 			err = got_object_open_as_commit(&commit, repo,
4484 			    &qid->id);
4485 			if (err)
4486 				break;
4487 			if (show_changed_paths ||
4488 			    (show_diffstat && !show_patch)) {
4489 				err = get_changed_paths(&changed_paths, commit,
4490 				    repo, show_diffstat ? &dsa : NULL);
4491 				if (err)
4492 					break;
4493 			}
4494 			if (one_line)
4495 				err = print_commit_oneline(commit, &qid->id,
4496 				    repo, refs_idmap);
4497 			else
4498 				err = print_commit(commit, &qid->id, repo, path,
4499 				    (show_changed_paths || show_diffstat) ?
4500 				    &changed_paths : NULL,
4501 				    show_diffstat ? &dsa : NULL, show_patch,
4502 				    diff_context, refs_idmap, NULL, NULL);
4503 			got_object_commit_close(commit);
4504 			if (err)
4505 				break;
4506 			got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4507 		}
4508 	}
4509 done:
4510 	while (!STAILQ_EMPTY(&reversed_commits)) {
4511 		qid = STAILQ_FIRST(&reversed_commits);
4512 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4513 		got_object_qid_free(qid);
4514 	}
4515 	got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4516 	if (search_pattern)
4517 		regfree(&regex);
4518 	got_commit_graph_close(graph);
4519 	return err;
4520 }
4521 
4522 __dead static void
4523 usage_log(void)
4524 {
4525 	fprintf(stderr, "usage: %s log [-bdPpRs] [-C number] [-c commit] "
4526 	    "[-l N] [-r repository-path] [-S search-pattern] [-x commit] "
4527 	    "[path]\n", getprogname());
4528 	exit(1);
4529 }
4530 
4531 static int
4532 get_default_log_limit(void)
4533 {
4534 	const char *got_default_log_limit;
4535 	long long n;
4536 	const char *errstr;
4537 
4538 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4539 	if (got_default_log_limit == NULL)
4540 		return 0;
4541 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4542 	if (errstr != NULL)
4543 		return 0;
4544 	return n;
4545 }
4546 
4547 static const struct got_error *
4548 cmd_log(int argc, char *argv[])
4549 {
4550 	const struct got_error *error;
4551 	struct got_repository *repo = NULL;
4552 	struct got_worktree *worktree = NULL;
4553 	struct got_object_id *start_id = NULL, *end_id = NULL;
4554 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4555 	const char *start_commit = NULL, *end_commit = NULL;
4556 	const char *search_pattern = NULL;
4557 	int diff_context = -1, ch;
4558 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4559 	int show_diffstat = 0, reverse_display_order = 0, one_line = 0;
4560 	const char *errstr;
4561 	struct got_reflist_head refs;
4562 	struct got_reflist_object_id_map *refs_idmap = NULL;
4563 	FILE *tmpfile = NULL;
4564 	int *pack_fds = NULL;
4565 
4566 	TAILQ_INIT(&refs);
4567 
4568 #ifndef PROFILE
4569 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4570 	    NULL)
4571 	    == -1)
4572 		err(1, "pledge");
4573 #endif
4574 
4575 	limit = get_default_log_limit();
4576 
4577 	while ((ch = getopt(argc, argv, "bC:c:dl:PpRr:S:sx:")) != -1) {
4578 		switch (ch) {
4579 		case 'b':
4580 			log_branches = 1;
4581 			break;
4582 		case 'C':
4583 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4584 			    &errstr);
4585 			if (errstr != NULL)
4586 				errx(1, "number of context lines is %s: %s",
4587 				    errstr, optarg);
4588 			break;
4589 		case 'c':
4590 			start_commit = optarg;
4591 			break;
4592 		case 'd':
4593 			show_diffstat = 1;
4594 			break;
4595 		case 'l':
4596 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4597 			if (errstr != NULL)
4598 				errx(1, "number of commits is %s: %s",
4599 				    errstr, optarg);
4600 			break;
4601 		case 'P':
4602 			show_changed_paths = 1;
4603 			break;
4604 		case 'p':
4605 			show_patch = 1;
4606 			break;
4607 		case 'R':
4608 			reverse_display_order = 1;
4609 			break;
4610 		case 'r':
4611 			repo_path = realpath(optarg, NULL);
4612 			if (repo_path == NULL)
4613 				return got_error_from_errno2("realpath",
4614 				    optarg);
4615 			got_path_strip_trailing_slashes(repo_path);
4616 			break;
4617 		case 'S':
4618 			search_pattern = optarg;
4619 			break;
4620 		case 's':
4621 			one_line = 1;
4622 			break;
4623 		case 'x':
4624 			end_commit = optarg;
4625 			break;
4626 		default:
4627 			usage_log();
4628 			/* NOTREACHED */
4629 		}
4630 	}
4631 
4632 	argc -= optind;
4633 	argv += optind;
4634 
4635 	if (diff_context == -1)
4636 		diff_context = 3;
4637 	else if (!show_patch)
4638 		errx(1, "-C requires -p");
4639 
4640 	if (one_line && (show_patch || show_changed_paths || show_diffstat))
4641 		errx(1, "cannot use -s with -d, -p or -P");
4642 
4643 	cwd = getcwd(NULL, 0);
4644 	if (cwd == NULL) {
4645 		error = got_error_from_errno("getcwd");
4646 		goto done;
4647 	}
4648 
4649 	error = got_repo_pack_fds_open(&pack_fds);
4650 	if (error != NULL)
4651 		goto done;
4652 
4653 	if (repo_path == NULL) {
4654 		error = got_worktree_open(&worktree, cwd);
4655 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4656 			goto done;
4657 		error = NULL;
4658 	}
4659 
4660 	if (argc == 1) {
4661 		if (worktree) {
4662 			error = got_worktree_resolve_path(&path, worktree,
4663 			    argv[0]);
4664 			if (error)
4665 				goto done;
4666 		} else {
4667 			path = strdup(argv[0]);
4668 			if (path == NULL) {
4669 				error = got_error_from_errno("strdup");
4670 				goto done;
4671 			}
4672 		}
4673 	} else if (argc != 0)
4674 		usage_log();
4675 
4676 	if (repo_path == NULL) {
4677 		repo_path = worktree ?
4678 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4679 	}
4680 	if (repo_path == NULL) {
4681 		error = got_error_from_errno("strdup");
4682 		goto done;
4683 	}
4684 
4685 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4686 	if (error != NULL)
4687 		goto done;
4688 
4689 	error = apply_unveil(got_repo_get_path(repo), 1,
4690 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4691 	if (error)
4692 		goto done;
4693 
4694 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4695 	if (error)
4696 		goto done;
4697 
4698 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4699 	if (error)
4700 		goto done;
4701 
4702 	if (start_commit == NULL) {
4703 		struct got_reference *head_ref;
4704 		struct got_commit_object *commit = NULL;
4705 		error = got_ref_open(&head_ref, repo,
4706 		    worktree ? got_worktree_get_head_ref_name(worktree)
4707 		    : GOT_REF_HEAD, 0);
4708 		if (error != NULL)
4709 			goto done;
4710 		error = got_ref_resolve(&start_id, repo, head_ref);
4711 		got_ref_close(head_ref);
4712 		if (error != NULL)
4713 			goto done;
4714 		error = got_object_open_as_commit(&commit, repo,
4715 		    start_id);
4716 		if (error != NULL)
4717 			goto done;
4718 		got_object_commit_close(commit);
4719 	} else {
4720 		error = got_repo_match_object_id(&start_id, NULL,
4721 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4722 		if (error != NULL)
4723 			goto done;
4724 	}
4725 	if (end_commit != NULL) {
4726 		error = got_repo_match_object_id(&end_id, NULL,
4727 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4728 		if (error != NULL)
4729 			goto done;
4730 	}
4731 
4732 	if (worktree) {
4733 		/*
4734 		 * If a path was specified on the command line it was resolved
4735 		 * to a path in the work tree above. Prepend the work tree's
4736 		 * path prefix to obtain the corresponding in-repository path.
4737 		 */
4738 		if (path) {
4739 			const char *prefix;
4740 			prefix = got_worktree_get_path_prefix(worktree);
4741 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4742 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4743 				error = got_error_from_errno("asprintf");
4744 				goto done;
4745 			}
4746 		}
4747 	} else
4748 		error = got_repo_map_path(&in_repo_path, repo,
4749 		    path ? path : "");
4750 	if (error != NULL)
4751 		goto done;
4752 	if (in_repo_path) {
4753 		free(path);
4754 		path = in_repo_path;
4755 	}
4756 
4757 	if (worktree) {
4758 		/* Release work tree lock. */
4759 		got_worktree_close(worktree);
4760 		worktree = NULL;
4761 	}
4762 
4763 	if (search_pattern && show_patch) {
4764 		tmpfile = got_opentemp();
4765 		if (tmpfile == NULL) {
4766 			error = got_error_from_errno("got_opentemp");
4767 			goto done;
4768 		}
4769 	}
4770 
4771 	error = print_commits(start_id, end_id, repo, path ? path : "",
4772 	    show_changed_paths, show_diffstat, show_patch, search_pattern,
4773 	    diff_context, limit, log_branches, reverse_display_order,
4774 	    refs_idmap, one_line, tmpfile);
4775 done:
4776 	free(path);
4777 	free(repo_path);
4778 	free(cwd);
4779 	if (worktree)
4780 		got_worktree_close(worktree);
4781 	if (repo) {
4782 		const struct got_error *close_err = got_repo_close(repo);
4783 		if (error == NULL)
4784 			error = close_err;
4785 	}
4786 	if (pack_fds) {
4787 		const struct got_error *pack_err =
4788 		    got_repo_pack_fds_close(pack_fds);
4789 		if (error == NULL)
4790 			error = pack_err;
4791 	}
4792 	if (refs_idmap)
4793 		got_reflist_object_id_map_free(refs_idmap);
4794 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4795 		error = got_error_from_errno("fclose");
4796 	got_ref_list_free(&refs);
4797 	return error;
4798 }
4799 
4800 __dead static void
4801 usage_diff(void)
4802 {
4803 	fprintf(stderr, "usage: %s diff [-adPsw] [-C number] [-c commit] "
4804 	    "[-r repository-path] [object1 object2 | path ...]\n",
4805 	    getprogname());
4806 	exit(1);
4807 }
4808 
4809 struct print_diff_arg {
4810 	struct got_repository *repo;
4811 	struct got_worktree *worktree;
4812 	struct got_diffstat_cb_arg *diffstat;
4813 	int diff_context;
4814 	const char *id_str;
4815 	int header_shown;
4816 	int diff_staged;
4817 	enum got_diff_algorithm diff_algo;
4818 	int ignore_whitespace;
4819 	int force_text_diff;
4820 	FILE *f1;
4821 	FILE *f2;
4822 	FILE *outfile;
4823 };
4824 
4825 /*
4826  * Create a file which contains the target path of a symlink so we can feed
4827  * it as content to the diff engine.
4828  */
4829 static const struct got_error *
4830 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4831     const char *abspath)
4832 {
4833 	const struct got_error *err = NULL;
4834 	char target_path[PATH_MAX];
4835 	ssize_t target_len, outlen;
4836 
4837 	*fd = -1;
4838 
4839 	if (dirfd != -1) {
4840 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4841 		if (target_len == -1)
4842 			return got_error_from_errno2("readlinkat", abspath);
4843 	} else {
4844 		target_len = readlink(abspath, target_path, PATH_MAX);
4845 		if (target_len == -1)
4846 			return got_error_from_errno2("readlink", abspath);
4847 	}
4848 
4849 	*fd = got_opentempfd();
4850 	if (*fd == -1)
4851 		return got_error_from_errno("got_opentempfd");
4852 
4853 	outlen = write(*fd, target_path, target_len);
4854 	if (outlen == -1) {
4855 		err = got_error_from_errno("got_opentempfd");
4856 		goto done;
4857 	}
4858 
4859 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4860 		err = got_error_from_errno2("lseek", abspath);
4861 		goto done;
4862 	}
4863 done:
4864 	if (err) {
4865 		close(*fd);
4866 		*fd = -1;
4867 	}
4868 	return err;
4869 }
4870 
4871 static const struct got_error *
4872 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4873     const char *path, struct got_object_id *blob_id,
4874     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4875     int dirfd, const char *de_name)
4876 {
4877 	struct print_diff_arg *a = arg;
4878 	const struct got_error *err = NULL;
4879 	struct got_blob_object *blob1 = NULL;
4880 	int fd = -1, fd1 = -1, fd2 = -1;
4881 	FILE *f2 = NULL;
4882 	char *abspath = NULL, *label1 = NULL;
4883 	struct stat sb;
4884 	off_t size1 = 0;
4885 	int f2_exists = 0;
4886 
4887 	memset(&sb, 0, sizeof(sb));
4888 
4889 	if (a->diff_staged) {
4890 		if (staged_status != GOT_STATUS_MODIFY &&
4891 		    staged_status != GOT_STATUS_ADD &&
4892 		    staged_status != GOT_STATUS_DELETE)
4893 			return NULL;
4894 	} else {
4895 		if (staged_status == GOT_STATUS_DELETE)
4896 			return NULL;
4897 		if (status == GOT_STATUS_NONEXISTENT)
4898 			return got_error_set_errno(ENOENT, path);
4899 		if (status != GOT_STATUS_MODIFY &&
4900 		    status != GOT_STATUS_ADD &&
4901 		    status != GOT_STATUS_DELETE &&
4902 		    status != GOT_STATUS_CONFLICT)
4903 			return NULL;
4904 	}
4905 
4906 	err = got_opentemp_truncate(a->f1);
4907 	if (err)
4908 		return got_error_from_errno("got_opentemp_truncate");
4909 	err = got_opentemp_truncate(a->f2);
4910 	if (err)
4911 		return got_error_from_errno("got_opentemp_truncate");
4912 
4913 	if (!a->header_shown) {
4914 		if (fprintf(a->outfile, "diff %s%s\n",
4915 		    a->diff_staged ? "-s " : "",
4916 		    got_worktree_get_root_path(a->worktree)) < 0) {
4917 			err = got_error_from_errno("fprintf");
4918 			goto done;
4919 		}
4920 		if (fprintf(a->outfile, "commit - %s\n", a->id_str) < 0) {
4921 			err = got_error_from_errno("fprintf");
4922 			goto done;
4923 		}
4924 		if (fprintf(a->outfile, "path + %s%s\n",
4925 		    got_worktree_get_root_path(a->worktree),
4926 		    a->diff_staged ? " (staged changes)" : "") < 0) {
4927 			err = got_error_from_errno("fprintf");
4928 			goto done;
4929 		}
4930 		a->header_shown = 1;
4931 	}
4932 
4933 	if (a->diff_staged) {
4934 		const char *label1 = NULL, *label2 = NULL;
4935 		switch (staged_status) {
4936 		case GOT_STATUS_MODIFY:
4937 			label1 = path;
4938 			label2 = path;
4939 			break;
4940 		case GOT_STATUS_ADD:
4941 			label2 = path;
4942 			break;
4943 		case GOT_STATUS_DELETE:
4944 			label1 = path;
4945 			break;
4946 		default:
4947 			return got_error(GOT_ERR_FILE_STATUS);
4948 		}
4949 		fd1 = got_opentempfd();
4950 		if (fd1 == -1) {
4951 			err = got_error_from_errno("got_opentempfd");
4952 			goto done;
4953 		}
4954 		fd2 = got_opentempfd();
4955 		if (fd2 == -1) {
4956 			err = got_error_from_errno("got_opentempfd");
4957 			goto done;
4958 		}
4959 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
4960 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
4961 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
4962 		    a->force_text_diff, a->diffstat, a->repo, a->outfile);
4963 		goto done;
4964 	}
4965 
4966 	fd1 = got_opentempfd();
4967 	if (fd1 == -1) {
4968 		err = got_error_from_errno("got_opentempfd");
4969 		goto done;
4970 	}
4971 
4972 	if (staged_status == GOT_STATUS_ADD ||
4973 	    staged_status == GOT_STATUS_MODIFY) {
4974 		char *id_str;
4975 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4976 		    8192, fd1);
4977 		if (err)
4978 			goto done;
4979 		err = got_object_id_str(&id_str, staged_blob_id);
4980 		if (err)
4981 			goto done;
4982 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4983 			err = got_error_from_errno("asprintf");
4984 			free(id_str);
4985 			goto done;
4986 		}
4987 		free(id_str);
4988 	} else if (status != GOT_STATUS_ADD) {
4989 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
4990 		    fd1);
4991 		if (err)
4992 			goto done;
4993 	}
4994 
4995 	if (status != GOT_STATUS_DELETE) {
4996 		if (asprintf(&abspath, "%s/%s",
4997 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4998 			err = got_error_from_errno("asprintf");
4999 			goto done;
5000 		}
5001 
5002 		if (dirfd != -1) {
5003 			fd = openat(dirfd, de_name,
5004 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5005 			if (fd == -1) {
5006 				if (!got_err_open_nofollow_on_symlink()) {
5007 					err = got_error_from_errno2("openat",
5008 					    abspath);
5009 					goto done;
5010 				}
5011 				err = get_symlink_target_file(&fd, dirfd,
5012 				    de_name, abspath);
5013 				if (err)
5014 					goto done;
5015 			}
5016 		} else {
5017 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5018 			if (fd == -1) {
5019 				if (!got_err_open_nofollow_on_symlink()) {
5020 					err = got_error_from_errno2("open",
5021 					    abspath);
5022 					goto done;
5023 				}
5024 				err = get_symlink_target_file(&fd, dirfd,
5025 				    de_name, abspath);
5026 				if (err)
5027 					goto done;
5028 			}
5029 		}
5030 		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
5031 			err = got_error_from_errno2("fstatat", abspath);
5032 			goto done;
5033 		}
5034 		f2 = fdopen(fd, "r");
5035 		if (f2 == NULL) {
5036 			err = got_error_from_errno2("fdopen", abspath);
5037 			goto done;
5038 		}
5039 		fd = -1;
5040 		f2_exists = 1;
5041 	}
5042 
5043 	if (blob1) {
5044 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
5045 		    a->f1, blob1);
5046 		if (err)
5047 			goto done;
5048 	}
5049 
5050 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
5051 	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
5052 	    a->ignore_whitespace, a->force_text_diff, a->diffstat, a->outfile);
5053 done:
5054 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
5055 		err = got_error_from_errno("close");
5056 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
5057 		err = got_error_from_errno("close");
5058 	if (blob1)
5059 		got_object_blob_close(blob1);
5060 	if (fd != -1 && close(fd) == -1 && err == NULL)
5061 		err = got_error_from_errno("close");
5062 	if (f2 && fclose(f2) == EOF && err == NULL)
5063 		err = got_error_from_errno("fclose");
5064 	free(abspath);
5065 	return err;
5066 }
5067 
5068 static const struct got_error *
5069 cmd_diff(int argc, char *argv[])
5070 {
5071 	const struct got_error *error;
5072 	struct got_repository *repo = NULL;
5073 	struct got_worktree *worktree = NULL;
5074 	char *cwd = NULL, *repo_path = NULL;
5075 	const char *commit_args[2] = { NULL, NULL };
5076 	int ncommit_args = 0;
5077 	struct got_object_id *ids[2] = { NULL, NULL };
5078 	char *labels[2] = { NULL, NULL };
5079 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
5080 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
5081 	int force_text_diff = 0, force_path = 0, rflag = 0, show_diffstat = 0;
5082 	const char *errstr;
5083 	struct got_reflist_head refs;
5084 	struct got_pathlist_head diffstat_paths, paths;
5085 	FILE *f1 = NULL, *f2 = NULL, *outfile = NULL;
5086 	int fd1 = -1, fd2 = -1;
5087 	int *pack_fds = NULL;
5088 	struct got_diffstat_cb_arg dsa;
5089 
5090 	memset(&dsa, 0, sizeof(dsa));
5091 
5092 	TAILQ_INIT(&refs);
5093 	TAILQ_INIT(&paths);
5094 	TAILQ_INIT(&diffstat_paths);
5095 
5096 #ifndef PROFILE
5097 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5098 	    NULL) == -1)
5099 		err(1, "pledge");
5100 #endif
5101 
5102 	while ((ch = getopt(argc, argv, "aC:c:dPr:sw")) != -1) {
5103 		switch (ch) {
5104 		case 'a':
5105 			force_text_diff = 1;
5106 			break;
5107 		case 'C':
5108 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
5109 			    &errstr);
5110 			if (errstr != NULL)
5111 				errx(1, "number of context lines is %s: %s",
5112 				    errstr, optarg);
5113 			break;
5114 		case 'c':
5115 			if (ncommit_args >= 2)
5116 				errx(1, "too many -c options used");
5117 			commit_args[ncommit_args++] = optarg;
5118 			break;
5119 		case 'd':
5120 			show_diffstat = 1;
5121 			break;
5122 		case 'P':
5123 			force_path = 1;
5124 			break;
5125 		case 'r':
5126 			repo_path = realpath(optarg, NULL);
5127 			if (repo_path == NULL)
5128 				return got_error_from_errno2("realpath",
5129 				    optarg);
5130 			got_path_strip_trailing_slashes(repo_path);
5131 			rflag = 1;
5132 			break;
5133 		case 's':
5134 			diff_staged = 1;
5135 			break;
5136 		case 'w':
5137 			ignore_whitespace = 1;
5138 			break;
5139 		default:
5140 			usage_diff();
5141 			/* NOTREACHED */
5142 		}
5143 	}
5144 
5145 	argc -= optind;
5146 	argv += optind;
5147 
5148 	cwd = getcwd(NULL, 0);
5149 	if (cwd == NULL) {
5150 		error = got_error_from_errno("getcwd");
5151 		goto done;
5152 	}
5153 
5154 	error = got_repo_pack_fds_open(&pack_fds);
5155 	if (error != NULL)
5156 		goto done;
5157 
5158 	if (repo_path == NULL) {
5159 		error = got_worktree_open(&worktree, cwd);
5160 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5161 			goto done;
5162 		else
5163 			error = NULL;
5164 		if (worktree) {
5165 			repo_path =
5166 			    strdup(got_worktree_get_repo_path(worktree));
5167 			if (repo_path == NULL) {
5168 				error = got_error_from_errno("strdup");
5169 				goto done;
5170 			}
5171 		} else {
5172 			repo_path = strdup(cwd);
5173 			if (repo_path == NULL) {
5174 				error = got_error_from_errno("strdup");
5175 				goto done;
5176 			}
5177 		}
5178 	}
5179 
5180 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5181 	free(repo_path);
5182 	if (error != NULL)
5183 		goto done;
5184 
5185 	if (show_diffstat) {
5186 		dsa.paths = &diffstat_paths;
5187 		dsa.force_text = force_text_diff;
5188 		dsa.ignore_ws = ignore_whitespace;
5189 		dsa.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5190 	}
5191 
5192 	if (rflag || worktree == NULL || ncommit_args > 0) {
5193 		if (force_path) {
5194 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5195 			    "-P option can only be used when diffing "
5196 			    "a work tree");
5197 			goto done;
5198 		}
5199 		if (diff_staged) {
5200 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5201 			    "-s option can only be used when diffing "
5202 			    "a work tree");
5203 			goto done;
5204 		}
5205 	}
5206 
5207 	error = apply_unveil(got_repo_get_path(repo), 1,
5208 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5209 	if (error)
5210 		goto done;
5211 
5212 	if ((!force_path && argc == 2) || ncommit_args > 0) {
5213 		int obj_type = (ncommit_args > 0 ?
5214 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
5215 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5216 		    NULL);
5217 		if (error)
5218 			goto done;
5219 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
5220 			const char *arg;
5221 			if (ncommit_args > 0)
5222 				arg = commit_args[i];
5223 			else
5224 				arg = argv[i];
5225 			error = got_repo_match_object_id(&ids[i], &labels[i],
5226 			    arg, obj_type, &refs, repo);
5227 			if (error) {
5228 				if (error->code != GOT_ERR_NOT_REF &&
5229 				    error->code != GOT_ERR_NO_OBJ)
5230 					goto done;
5231 				if (ncommit_args > 0)
5232 					goto done;
5233 				error = NULL;
5234 				break;
5235 			}
5236 		}
5237 	}
5238 
5239 	f1 = got_opentemp();
5240 	if (f1 == NULL) {
5241 		error = got_error_from_errno("got_opentemp");
5242 		goto done;
5243 	}
5244 
5245 	f2 = got_opentemp();
5246 	if (f2 == NULL) {
5247 		error = got_error_from_errno("got_opentemp");
5248 		goto done;
5249 	}
5250 
5251 	outfile = got_opentemp();
5252 	if (outfile == NULL) {
5253 		error = got_error_from_errno("got_opentemp");
5254 		goto done;
5255 	}
5256 
5257 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
5258 		struct print_diff_arg arg;
5259 		char *id_str;
5260 
5261 		if (worktree == NULL) {
5262 			if (argc == 2 && ids[0] == NULL) {
5263 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
5264 				goto done;
5265 			} else if (argc == 2 && ids[1] == NULL) {
5266 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
5267 				goto done;
5268 			} else if (argc > 0) {
5269 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
5270 				    "%s", "specified paths cannot be resolved");
5271 				goto done;
5272 			} else {
5273 				error = got_error(GOT_ERR_NOT_WORKTREE);
5274 				goto done;
5275 			}
5276 		}
5277 
5278 		error = get_worktree_paths_from_argv(&paths, argc, argv,
5279 		    worktree);
5280 		if (error)
5281 			goto done;
5282 
5283 		error = got_object_id_str(&id_str,
5284 		    got_worktree_get_base_commit_id(worktree));
5285 		if (error)
5286 			goto done;
5287 		arg.repo = repo;
5288 		arg.worktree = worktree;
5289 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5290 		arg.diff_context = diff_context;
5291 		arg.id_str = id_str;
5292 		arg.header_shown = 0;
5293 		arg.diff_staged = diff_staged;
5294 		arg.ignore_whitespace = ignore_whitespace;
5295 		arg.force_text_diff = force_text_diff;
5296 		arg.diffstat = show_diffstat ? &dsa : NULL;
5297 		arg.f1 = f1;
5298 		arg.f2 = f2;
5299 		arg.outfile = outfile;
5300 
5301 		error = got_worktree_status(worktree, &paths, repo, 0,
5302 		    print_diff, &arg, check_cancelled, NULL);
5303 		free(id_str);
5304 		if (error)
5305 			goto done;
5306 
5307 		if (show_diffstat && dsa.nfiles > 0) {
5308 			char *header;
5309 
5310 			if (asprintf(&header, "diffstat %s%s",
5311 			    diff_staged ? "-s " : "",
5312 			    got_worktree_get_root_path(worktree)) == -1) {
5313 				error = got_error_from_errno("asprintf");
5314 				goto done;
5315 			}
5316 
5317 			error = print_diffstat(&dsa, header);
5318 			free(header);
5319 			if (error)
5320 				goto done;
5321 		}
5322 
5323 		error = printfile(outfile);
5324 		goto done;
5325 	}
5326 
5327 	if (ncommit_args == 1) {
5328 		struct got_commit_object *commit;
5329 		error = got_object_open_as_commit(&commit, repo, ids[0]);
5330 		if (error)
5331 			goto done;
5332 
5333 		labels[1] = labels[0];
5334 		ids[1] = ids[0];
5335 		if (got_object_commit_get_nparents(commit) > 0) {
5336 			const struct got_object_id_queue *pids;
5337 			struct got_object_qid *pid;
5338 			pids = got_object_commit_get_parent_ids(commit);
5339 			pid = STAILQ_FIRST(pids);
5340 			ids[0] = got_object_id_dup(&pid->id);
5341 			if (ids[0] == NULL) {
5342 				error = got_error_from_errno(
5343 				    "got_object_id_dup");
5344 				got_object_commit_close(commit);
5345 				goto done;
5346 			}
5347 			error = got_object_id_str(&labels[0], ids[0]);
5348 			if (error) {
5349 				got_object_commit_close(commit);
5350 				goto done;
5351 			}
5352 		} else {
5353 			ids[0] = NULL;
5354 			labels[0] = strdup("/dev/null");
5355 			if (labels[0] == NULL) {
5356 				error = got_error_from_errno("strdup");
5357 				got_object_commit_close(commit);
5358 				goto done;
5359 			}
5360 		}
5361 
5362 		got_object_commit_close(commit);
5363 	}
5364 
5365 	if (ncommit_args == 0 && argc > 2) {
5366 		error = got_error_msg(GOT_ERR_BAD_PATH,
5367 		    "path arguments cannot be used when diffing two objects");
5368 		goto done;
5369 	}
5370 
5371 	if (ids[0]) {
5372 		error = got_object_get_type(&type1, repo, ids[0]);
5373 		if (error)
5374 			goto done;
5375 	}
5376 
5377 	error = got_object_get_type(&type2, repo, ids[1]);
5378 	if (error)
5379 		goto done;
5380 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
5381 		error = got_error(GOT_ERR_OBJ_TYPE);
5382 		goto done;
5383 	}
5384 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
5385 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
5386 		    "path arguments cannot be used when diffing blobs");
5387 		goto done;
5388 	}
5389 
5390 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
5391 		char *in_repo_path;
5392 		struct got_pathlist_entry *new;
5393 		if (worktree) {
5394 			const char *prefix;
5395 			char *p;
5396 			error = got_worktree_resolve_path(&p, worktree,
5397 			    argv[i]);
5398 			if (error)
5399 				goto done;
5400 			prefix = got_worktree_get_path_prefix(worktree);
5401 			while (prefix[0] == '/')
5402 				prefix++;
5403 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
5404 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
5405 			    p) == -1) {
5406 				error = got_error_from_errno("asprintf");
5407 				free(p);
5408 				goto done;
5409 			}
5410 			free(p);
5411 		} else {
5412 			char *mapped_path, *s;
5413 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
5414 			if (error)
5415 				goto done;
5416 			s = mapped_path;
5417 			while (s[0] == '/')
5418 				s++;
5419 			in_repo_path = strdup(s);
5420 			if (in_repo_path == NULL) {
5421 				error = got_error_from_errno("asprintf");
5422 				free(mapped_path);
5423 				goto done;
5424 			}
5425 			free(mapped_path);
5426 
5427 		}
5428 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
5429 		if (error || new == NULL /* duplicate */)
5430 			free(in_repo_path);
5431 		if (error)
5432 			goto done;
5433 	}
5434 
5435 	if (worktree) {
5436 		/* Release work tree lock. */
5437 		got_worktree_close(worktree);
5438 		worktree = NULL;
5439 	}
5440 
5441 	fd1 = got_opentempfd();
5442 	if (fd1 == -1) {
5443 		error = got_error_from_errno("got_opentempfd");
5444 		goto done;
5445 	}
5446 
5447 	fd2 = got_opentempfd();
5448 	if (fd2 == -1) {
5449 		error = got_error_from_errno("got_opentempfd");
5450 		goto done;
5451 	}
5452 
5453 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
5454 	case GOT_OBJ_TYPE_BLOB:
5455 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
5456 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
5457 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5458 		    ignore_whitespace, force_text_diff,
5459 		    show_diffstat ? &dsa : NULL, repo, outfile);
5460 		break;
5461 	case GOT_OBJ_TYPE_TREE:
5462 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
5463 		    ids[0], ids[1], &paths, "", "",
5464 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5465 		    ignore_whitespace, force_text_diff,
5466 		    show_diffstat ? &dsa : NULL, repo, outfile);
5467 		break;
5468 	case GOT_OBJ_TYPE_COMMIT:
5469 		fprintf(outfile, "diff %s %s\n", labels[0], labels[1]);
5470 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
5471 		    fd1, fd2, ids[0], ids[1], &paths,
5472 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5473 		    ignore_whitespace, force_text_diff,
5474 		    show_diffstat ? &dsa : NULL, repo, outfile);
5475 		break;
5476 	default:
5477 		error = got_error(GOT_ERR_OBJ_TYPE);
5478 	}
5479 	if (error)
5480 		goto done;
5481 
5482 	if (show_diffstat && dsa.nfiles > 0) {
5483 		char *header = NULL;
5484 
5485 		if (asprintf(&header, "diffstat %s %s",
5486 		    labels[0], labels[1]) == -1) {
5487 			error = got_error_from_errno("asprintf");
5488 			goto done;
5489 		}
5490 
5491 		error = print_diffstat(&dsa, header);
5492 		free(header);
5493 		if (error)
5494 			goto done;
5495 	}
5496 
5497 	error = printfile(outfile);
5498 
5499 done:
5500 	free(labels[0]);
5501 	free(labels[1]);
5502 	free(ids[0]);
5503 	free(ids[1]);
5504 	if (worktree)
5505 		got_worktree_close(worktree);
5506 	if (repo) {
5507 		const struct got_error *close_err = got_repo_close(repo);
5508 		if (error == NULL)
5509 			error = close_err;
5510 	}
5511 	if (pack_fds) {
5512 		const struct got_error *pack_err =
5513 		    got_repo_pack_fds_close(pack_fds);
5514 		if (error == NULL)
5515 			error = pack_err;
5516 	}
5517 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
5518 	got_pathlist_free(&diffstat_paths, GOT_PATHLIST_FREE_ALL);
5519 	got_ref_list_free(&refs);
5520 	if (outfile && fclose(outfile) == EOF && error == NULL)
5521 		error = got_error_from_errno("fclose");
5522 	if (f1 && fclose(f1) == EOF && error == NULL)
5523 		error = got_error_from_errno("fclose");
5524 	if (f2 && fclose(f2) == EOF && error == NULL)
5525 		error = got_error_from_errno("fclose");
5526 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5527 		error = got_error_from_errno("close");
5528 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5529 		error = got_error_from_errno("close");
5530 	return error;
5531 }
5532 
5533 __dead static void
5534 usage_blame(void)
5535 {
5536 	fprintf(stderr,
5537 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
5538 	    getprogname());
5539 	exit(1);
5540 }
5541 
5542 struct blame_line {
5543 	int annotated;
5544 	char *id_str;
5545 	char *committer;
5546 	char datebuf[11]; /* YYYY-MM-DD + NUL */
5547 };
5548 
5549 struct blame_cb_args {
5550 	struct blame_line *lines;
5551 	int nlines;
5552 	int nlines_prec;
5553 	int lineno_cur;
5554 	off_t *line_offsets;
5555 	FILE *f;
5556 	struct got_repository *repo;
5557 };
5558 
5559 static const struct got_error *
5560 blame_cb(void *arg, int nlines, int lineno,
5561     struct got_commit_object *commit, struct got_object_id *id)
5562 {
5563 	const struct got_error *err = NULL;
5564 	struct blame_cb_args *a = arg;
5565 	struct blame_line *bline;
5566 	char *line = NULL;
5567 	size_t linesize = 0;
5568 	off_t offset;
5569 	struct tm tm;
5570 	time_t committer_time;
5571 
5572 	if (nlines != a->nlines ||
5573 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
5574 		return got_error(GOT_ERR_RANGE);
5575 
5576 	if (sigint_received)
5577 		return got_error(GOT_ERR_ITER_COMPLETED);
5578 
5579 	if (lineno == -1)
5580 		return NULL; /* no change in this commit */
5581 
5582 	/* Annotate this line. */
5583 	bline = &a->lines[lineno - 1];
5584 	if (bline->annotated)
5585 		return NULL;
5586 	err = got_object_id_str(&bline->id_str, id);
5587 	if (err)
5588 		return err;
5589 
5590 	bline->committer = strdup(got_object_commit_get_committer(commit));
5591 	if (bline->committer == NULL) {
5592 		err = got_error_from_errno("strdup");
5593 		goto done;
5594 	}
5595 
5596 	committer_time = got_object_commit_get_committer_time(commit);
5597 	if (gmtime_r(&committer_time, &tm) == NULL)
5598 		return got_error_from_errno("gmtime_r");
5599 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
5600 	    &tm) == 0) {
5601 		err = got_error(GOT_ERR_NO_SPACE);
5602 		goto done;
5603 	}
5604 	bline->annotated = 1;
5605 
5606 	/* Print lines annotated so far. */
5607 	bline = &a->lines[a->lineno_cur - 1];
5608 	if (!bline->annotated)
5609 		goto done;
5610 
5611 	offset = a->line_offsets[a->lineno_cur - 1];
5612 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5613 		err = got_error_from_errno("fseeko");
5614 		goto done;
5615 	}
5616 
5617 	while (a->lineno_cur <= a->nlines && bline->annotated) {
5618 		char *smallerthan, *at, *nl, *committer;
5619 		size_t len;
5620 
5621 		if (getline(&line, &linesize, a->f) == -1) {
5622 			if (ferror(a->f))
5623 				err = got_error_from_errno("getline");
5624 			break;
5625 		}
5626 
5627 		committer = bline->committer;
5628 		smallerthan = strchr(committer, '<');
5629 		if (smallerthan && smallerthan[1] != '\0')
5630 			committer = smallerthan + 1;
5631 		at = strchr(committer, '@');
5632 		if (at)
5633 			*at = '\0';
5634 		len = strlen(committer);
5635 		if (len >= 9)
5636 			committer[8] = '\0';
5637 
5638 		nl = strchr(line, '\n');
5639 		if (nl)
5640 			*nl = '\0';
5641 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5642 		    bline->id_str, bline->datebuf, committer, line);
5643 
5644 		a->lineno_cur++;
5645 		bline = &a->lines[a->lineno_cur - 1];
5646 	}
5647 done:
5648 	free(line);
5649 	return err;
5650 }
5651 
5652 static const struct got_error *
5653 cmd_blame(int argc, char *argv[])
5654 {
5655 	const struct got_error *error;
5656 	struct got_repository *repo = NULL;
5657 	struct got_worktree *worktree = NULL;
5658 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5659 	char *link_target = NULL;
5660 	struct got_object_id *obj_id = NULL;
5661 	struct got_object_id *commit_id = NULL;
5662 	struct got_commit_object *commit = NULL;
5663 	struct got_blob_object *blob = NULL;
5664 	char *commit_id_str = NULL;
5665 	struct blame_cb_args bca;
5666 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5667 	off_t filesize;
5668 	int *pack_fds = NULL;
5669 	FILE *f1 = NULL, *f2 = NULL;
5670 
5671 	fd1 = got_opentempfd();
5672 	if (fd1 == -1)
5673 		return got_error_from_errno("got_opentempfd");
5674 
5675 	memset(&bca, 0, sizeof(bca));
5676 
5677 #ifndef PROFILE
5678 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5679 	    NULL) == -1)
5680 		err(1, "pledge");
5681 #endif
5682 
5683 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5684 		switch (ch) {
5685 		case 'c':
5686 			commit_id_str = optarg;
5687 			break;
5688 		case 'r':
5689 			repo_path = realpath(optarg, NULL);
5690 			if (repo_path == NULL)
5691 				return got_error_from_errno2("realpath",
5692 				    optarg);
5693 			got_path_strip_trailing_slashes(repo_path);
5694 			break;
5695 		default:
5696 			usage_blame();
5697 			/* NOTREACHED */
5698 		}
5699 	}
5700 
5701 	argc -= optind;
5702 	argv += optind;
5703 
5704 	if (argc == 1)
5705 		path = argv[0];
5706 	else
5707 		usage_blame();
5708 
5709 	cwd = getcwd(NULL, 0);
5710 	if (cwd == NULL) {
5711 		error = got_error_from_errno("getcwd");
5712 		goto done;
5713 	}
5714 
5715 	error = got_repo_pack_fds_open(&pack_fds);
5716 	if (error != NULL)
5717 		goto done;
5718 
5719 	if (repo_path == NULL) {
5720 		error = got_worktree_open(&worktree, cwd);
5721 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5722 			goto done;
5723 		else
5724 			error = NULL;
5725 		if (worktree) {
5726 			repo_path =
5727 			    strdup(got_worktree_get_repo_path(worktree));
5728 			if (repo_path == NULL) {
5729 				error = got_error_from_errno("strdup");
5730 				if (error)
5731 					goto done;
5732 			}
5733 		} else {
5734 			repo_path = strdup(cwd);
5735 			if (repo_path == NULL) {
5736 				error = got_error_from_errno("strdup");
5737 				goto done;
5738 			}
5739 		}
5740 	}
5741 
5742 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5743 	if (error != NULL)
5744 		goto done;
5745 
5746 	if (worktree) {
5747 		const char *prefix = got_worktree_get_path_prefix(worktree);
5748 		char *p;
5749 
5750 		error = got_worktree_resolve_path(&p, worktree, path);
5751 		if (error)
5752 			goto done;
5753 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5754 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5755 		    p) == -1) {
5756 			error = got_error_from_errno("asprintf");
5757 			free(p);
5758 			goto done;
5759 		}
5760 		free(p);
5761 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5762 	} else {
5763 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5764 		if (error)
5765 			goto done;
5766 		error = got_repo_map_path(&in_repo_path, repo, path);
5767 	}
5768 	if (error)
5769 		goto done;
5770 
5771 	if (commit_id_str == NULL) {
5772 		struct got_reference *head_ref;
5773 		error = got_ref_open(&head_ref, repo, worktree ?
5774 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5775 		if (error != NULL)
5776 			goto done;
5777 		error = got_ref_resolve(&commit_id, repo, head_ref);
5778 		got_ref_close(head_ref);
5779 		if (error != NULL)
5780 			goto done;
5781 	} else {
5782 		struct got_reflist_head refs;
5783 		TAILQ_INIT(&refs);
5784 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5785 		    NULL);
5786 		if (error)
5787 			goto done;
5788 		error = got_repo_match_object_id(&commit_id, NULL,
5789 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5790 		got_ref_list_free(&refs);
5791 		if (error)
5792 			goto done;
5793 	}
5794 
5795 	if (worktree) {
5796 		/* Release work tree lock. */
5797 		got_worktree_close(worktree);
5798 		worktree = NULL;
5799 	}
5800 
5801 	error = got_object_open_as_commit(&commit, repo, commit_id);
5802 	if (error)
5803 		goto done;
5804 
5805 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5806 	    commit, repo);
5807 	if (error)
5808 		goto done;
5809 
5810 	error = got_object_id_by_path(&obj_id, repo, commit,
5811 	    link_target ? link_target : in_repo_path);
5812 	if (error)
5813 		goto done;
5814 
5815 	error = got_object_get_type(&obj_type, repo, obj_id);
5816 	if (error)
5817 		goto done;
5818 
5819 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5820 		error = got_error_path(link_target ? link_target : in_repo_path,
5821 		    GOT_ERR_OBJ_TYPE);
5822 		goto done;
5823 	}
5824 
5825 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5826 	if (error)
5827 		goto done;
5828 	bca.f = got_opentemp();
5829 	if (bca.f == NULL) {
5830 		error = got_error_from_errno("got_opentemp");
5831 		goto done;
5832 	}
5833 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5834 	    &bca.line_offsets, bca.f, blob);
5835 	if (error || bca.nlines == 0)
5836 		goto done;
5837 
5838 	/* Don't include \n at EOF in the blame line count. */
5839 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5840 		bca.nlines--;
5841 
5842 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5843 	if (bca.lines == NULL) {
5844 		error = got_error_from_errno("calloc");
5845 		goto done;
5846 	}
5847 	bca.lineno_cur = 1;
5848 	bca.nlines_prec = 0;
5849 	i = bca.nlines;
5850 	while (i > 0) {
5851 		i /= 10;
5852 		bca.nlines_prec++;
5853 	}
5854 	bca.repo = repo;
5855 
5856 	fd2 = got_opentempfd();
5857 	if (fd2 == -1) {
5858 		error = got_error_from_errno("got_opentempfd");
5859 		goto done;
5860 	}
5861 	fd3 = got_opentempfd();
5862 	if (fd3 == -1) {
5863 		error = got_error_from_errno("got_opentempfd");
5864 		goto done;
5865 	}
5866 	f1 = got_opentemp();
5867 	if (f1 == NULL) {
5868 		error = got_error_from_errno("got_opentemp");
5869 		goto done;
5870 	}
5871 	f2 = got_opentemp();
5872 	if (f2 == NULL) {
5873 		error = got_error_from_errno("got_opentemp");
5874 		goto done;
5875 	}
5876 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5877 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5878 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5879 done:
5880 	free(in_repo_path);
5881 	free(link_target);
5882 	free(repo_path);
5883 	free(cwd);
5884 	free(commit_id);
5885 	free(obj_id);
5886 	if (commit)
5887 		got_object_commit_close(commit);
5888 
5889 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5890 		error = got_error_from_errno("close");
5891 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5892 		error = got_error_from_errno("close");
5893 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5894 		error = got_error_from_errno("close");
5895 	if (f1 && fclose(f1) == EOF && error == NULL)
5896 		error = got_error_from_errno("fclose");
5897 	if (f2 && fclose(f2) == EOF && error == NULL)
5898 		error = got_error_from_errno("fclose");
5899 
5900 	if (blob)
5901 		got_object_blob_close(blob);
5902 	if (worktree)
5903 		got_worktree_close(worktree);
5904 	if (repo) {
5905 		const struct got_error *close_err = got_repo_close(repo);
5906 		if (error == NULL)
5907 			error = close_err;
5908 	}
5909 	if (pack_fds) {
5910 		const struct got_error *pack_err =
5911 		    got_repo_pack_fds_close(pack_fds);
5912 		if (error == NULL)
5913 			error = pack_err;
5914 	}
5915 	if (bca.lines) {
5916 		for (i = 0; i < bca.nlines; i++) {
5917 			struct blame_line *bline = &bca.lines[i];
5918 			free(bline->id_str);
5919 			free(bline->committer);
5920 		}
5921 		free(bca.lines);
5922 	}
5923 	free(bca.line_offsets);
5924 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5925 		error = got_error_from_errno("fclose");
5926 	return error;
5927 }
5928 
5929 __dead static void
5930 usage_tree(void)
5931 {
5932 	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
5933 	    "[path]\n", getprogname());
5934 	exit(1);
5935 }
5936 
5937 static const struct got_error *
5938 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5939     const char *root_path, struct got_repository *repo)
5940 {
5941 	const struct got_error *err = NULL;
5942 	int is_root_path = (strcmp(path, root_path) == 0);
5943 	const char *modestr = "";
5944 	mode_t mode = got_tree_entry_get_mode(te);
5945 	char *link_target = NULL;
5946 
5947 	path += strlen(root_path);
5948 	while (path[0] == '/')
5949 		path++;
5950 
5951 	if (got_object_tree_entry_is_submodule(te))
5952 		modestr = "$";
5953 	else if (S_ISLNK(mode)) {
5954 		int i;
5955 
5956 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5957 		if (err)
5958 			return err;
5959 		for (i = 0; i < strlen(link_target); i++) {
5960 			if (!isprint((unsigned char)link_target[i]))
5961 				link_target[i] = '?';
5962 		}
5963 
5964 		modestr = "@";
5965 	}
5966 	else if (S_ISDIR(mode))
5967 		modestr = "/";
5968 	else if (mode & S_IXUSR)
5969 		modestr = "*";
5970 
5971 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5972 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5973 	    link_target ? " -> ": "", link_target ? link_target : "");
5974 
5975 	free(link_target);
5976 	return NULL;
5977 }
5978 
5979 static const struct got_error *
5980 print_tree(const char *path, struct got_commit_object *commit,
5981     int show_ids, int recurse, const char *root_path,
5982     struct got_repository *repo)
5983 {
5984 	const struct got_error *err = NULL;
5985 	struct got_object_id *tree_id = NULL;
5986 	struct got_tree_object *tree = NULL;
5987 	int nentries, i;
5988 
5989 	err = got_object_id_by_path(&tree_id, repo, commit, path);
5990 	if (err)
5991 		goto done;
5992 
5993 	err = got_object_open_as_tree(&tree, repo, tree_id);
5994 	if (err)
5995 		goto done;
5996 	nentries = got_object_tree_get_nentries(tree);
5997 	for (i = 0; i < nentries; i++) {
5998 		struct got_tree_entry *te;
5999 		char *id = NULL;
6000 
6001 		if (sigint_received || sigpipe_received)
6002 			break;
6003 
6004 		te = got_object_tree_get_entry(tree, i);
6005 		if (show_ids) {
6006 			char *id_str;
6007 			err = got_object_id_str(&id_str,
6008 			    got_tree_entry_get_id(te));
6009 			if (err)
6010 				goto done;
6011 			if (asprintf(&id, "%s ", id_str) == -1) {
6012 				err = got_error_from_errno("asprintf");
6013 				free(id_str);
6014 				goto done;
6015 			}
6016 			free(id_str);
6017 		}
6018 		err = print_entry(te, id, path, root_path, repo);
6019 		free(id);
6020 		if (err)
6021 			goto done;
6022 
6023 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
6024 			char *child_path;
6025 			if (asprintf(&child_path, "%s%s%s", path,
6026 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
6027 			    got_tree_entry_get_name(te)) == -1) {
6028 				err = got_error_from_errno("asprintf");
6029 				goto done;
6030 			}
6031 			err = print_tree(child_path, commit, show_ids, 1,
6032 			    root_path, repo);
6033 			free(child_path);
6034 			if (err)
6035 				goto done;
6036 		}
6037 	}
6038 done:
6039 	if (tree)
6040 		got_object_tree_close(tree);
6041 	free(tree_id);
6042 	return err;
6043 }
6044 
6045 static const struct got_error *
6046 cmd_tree(int argc, char *argv[])
6047 {
6048 	const struct got_error *error;
6049 	struct got_repository *repo = NULL;
6050 	struct got_worktree *worktree = NULL;
6051 	const char *path, *refname = NULL;
6052 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
6053 	struct got_object_id *commit_id = NULL;
6054 	struct got_commit_object *commit = NULL;
6055 	char *commit_id_str = NULL;
6056 	int show_ids = 0, recurse = 0;
6057 	int ch;
6058 	int *pack_fds = NULL;
6059 
6060 #ifndef PROFILE
6061 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6062 	    NULL) == -1)
6063 		err(1, "pledge");
6064 #endif
6065 
6066 	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
6067 		switch (ch) {
6068 		case 'c':
6069 			commit_id_str = optarg;
6070 			break;
6071 		case 'i':
6072 			show_ids = 1;
6073 			break;
6074 		case 'R':
6075 			recurse = 1;
6076 			break;
6077 		case 'r':
6078 			repo_path = realpath(optarg, NULL);
6079 			if (repo_path == NULL)
6080 				return got_error_from_errno2("realpath",
6081 				    optarg);
6082 			got_path_strip_trailing_slashes(repo_path);
6083 			break;
6084 		default:
6085 			usage_tree();
6086 			/* NOTREACHED */
6087 		}
6088 	}
6089 
6090 	argc -= optind;
6091 	argv += optind;
6092 
6093 	if (argc == 1)
6094 		path = argv[0];
6095 	else if (argc > 1)
6096 		usage_tree();
6097 	else
6098 		path = NULL;
6099 
6100 	cwd = getcwd(NULL, 0);
6101 	if (cwd == NULL) {
6102 		error = got_error_from_errno("getcwd");
6103 		goto done;
6104 	}
6105 
6106 	error = got_repo_pack_fds_open(&pack_fds);
6107 	if (error != NULL)
6108 		goto done;
6109 
6110 	if (repo_path == NULL) {
6111 		error = got_worktree_open(&worktree, cwd);
6112 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6113 			goto done;
6114 		else
6115 			error = NULL;
6116 		if (worktree) {
6117 			repo_path =
6118 			    strdup(got_worktree_get_repo_path(worktree));
6119 			if (repo_path == NULL)
6120 				error = got_error_from_errno("strdup");
6121 			if (error)
6122 				goto done;
6123 		} else {
6124 			repo_path = strdup(cwd);
6125 			if (repo_path == NULL) {
6126 				error = got_error_from_errno("strdup");
6127 				goto done;
6128 			}
6129 		}
6130 	}
6131 
6132 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6133 	if (error != NULL)
6134 		goto done;
6135 
6136 	if (worktree) {
6137 		const char *prefix = got_worktree_get_path_prefix(worktree);
6138 		char *p;
6139 
6140 		if (path == NULL)
6141 			path = "";
6142 		error = got_worktree_resolve_path(&p, worktree, path);
6143 		if (error)
6144 			goto done;
6145 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
6146 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
6147 		    p) == -1) {
6148 			error = got_error_from_errno("asprintf");
6149 			free(p);
6150 			goto done;
6151 		}
6152 		free(p);
6153 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6154 		if (error)
6155 			goto done;
6156 	} else {
6157 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6158 		if (error)
6159 			goto done;
6160 		if (path == NULL)
6161 			path = "/";
6162 		error = got_repo_map_path(&in_repo_path, repo, path);
6163 		if (error != NULL)
6164 			goto done;
6165 	}
6166 
6167 	if (commit_id_str == NULL) {
6168 		struct got_reference *head_ref;
6169 		if (worktree)
6170 			refname = got_worktree_get_head_ref_name(worktree);
6171 		else
6172 			refname = GOT_REF_HEAD;
6173 		error = got_ref_open(&head_ref, repo, refname, 0);
6174 		if (error != NULL)
6175 			goto done;
6176 		error = got_ref_resolve(&commit_id, repo, head_ref);
6177 		got_ref_close(head_ref);
6178 		if (error != NULL)
6179 			goto done;
6180 	} else {
6181 		struct got_reflist_head refs;
6182 		TAILQ_INIT(&refs);
6183 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6184 		    NULL);
6185 		if (error)
6186 			goto done;
6187 		error = got_repo_match_object_id(&commit_id, NULL,
6188 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6189 		got_ref_list_free(&refs);
6190 		if (error)
6191 			goto done;
6192 	}
6193 
6194 	if (worktree) {
6195 		/* Release work tree lock. */
6196 		got_worktree_close(worktree);
6197 		worktree = NULL;
6198 	}
6199 
6200 	error = got_object_open_as_commit(&commit, repo, commit_id);
6201 	if (error)
6202 		goto done;
6203 
6204 	error = print_tree(in_repo_path, commit, show_ids, recurse,
6205 	    in_repo_path, repo);
6206 done:
6207 	free(in_repo_path);
6208 	free(repo_path);
6209 	free(cwd);
6210 	free(commit_id);
6211 	if (commit)
6212 		got_object_commit_close(commit);
6213 	if (worktree)
6214 		got_worktree_close(worktree);
6215 	if (repo) {
6216 		const struct got_error *close_err = got_repo_close(repo);
6217 		if (error == NULL)
6218 			error = close_err;
6219 	}
6220 	if (pack_fds) {
6221 		const struct got_error *pack_err =
6222 		    got_repo_pack_fds_close(pack_fds);
6223 		if (error == NULL)
6224 			error = pack_err;
6225 	}
6226 	return error;
6227 }
6228 
6229 __dead static void
6230 usage_status(void)
6231 {
6232 	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
6233 	    "[-s status-codes] [path ...]\n", getprogname());
6234 	exit(1);
6235 }
6236 
6237 struct got_status_arg {
6238 	char *status_codes;
6239 	int suppress;
6240 };
6241 
6242 static const struct got_error *
6243 print_status(void *arg, unsigned char status, unsigned char staged_status,
6244     const char *path, struct got_object_id *blob_id,
6245     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
6246     int dirfd, const char *de_name)
6247 {
6248 	struct got_status_arg *st = arg;
6249 
6250 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6251 		status = GOT_STATUS_NO_CHANGE;
6252 	if (st != NULL && st->status_codes) {
6253 		size_t ncodes = strlen(st->status_codes);
6254 		int i, j = 0;
6255 
6256 		for (i = 0; i < ncodes ; i++) {
6257 			if (st->suppress) {
6258 				if (status == st->status_codes[i] ||
6259 				    staged_status == st->status_codes[i]) {
6260 					j++;
6261 					continue;
6262 				}
6263 			} else {
6264 				if (status == st->status_codes[i] ||
6265 				    staged_status == st->status_codes[i])
6266 					break;
6267 			}
6268 		}
6269 
6270 		if (st->suppress && j == 0)
6271 			goto print;
6272 
6273 		if (i == ncodes)
6274 			return NULL;
6275 	}
6276 print:
6277 	printf("%c%c %s\n", status, staged_status, path);
6278 	return NULL;
6279 }
6280 
6281 static const struct got_error *
6282 cmd_status(int argc, char *argv[])
6283 {
6284 	const struct got_error *error = NULL;
6285 	struct got_repository *repo = NULL;
6286 	struct got_worktree *worktree = NULL;
6287 	struct got_status_arg st;
6288 	char *cwd = NULL;
6289 	struct got_pathlist_head paths;
6290 	int ch, i, no_ignores = 0;
6291 	int *pack_fds = NULL;
6292 
6293 	TAILQ_INIT(&paths);
6294 
6295 	memset(&st, 0, sizeof(st));
6296 	st.status_codes = NULL;
6297 	st.suppress = 0;
6298 
6299 #ifndef PROFILE
6300 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6301 	    NULL) == -1)
6302 		err(1, "pledge");
6303 #endif
6304 
6305 	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
6306 		switch (ch) {
6307 		case 'I':
6308 			no_ignores = 1;
6309 			break;
6310 		case 'S':
6311 			if (st.status_codes != NULL && st.suppress == 0)
6312 				option_conflict('S', 's');
6313 			st.suppress = 1;
6314 			/* fallthrough */
6315 		case 's':
6316 			for (i = 0; i < strlen(optarg); i++) {
6317 				switch (optarg[i]) {
6318 				case GOT_STATUS_MODIFY:
6319 				case GOT_STATUS_ADD:
6320 				case GOT_STATUS_DELETE:
6321 				case GOT_STATUS_CONFLICT:
6322 				case GOT_STATUS_MISSING:
6323 				case GOT_STATUS_OBSTRUCTED:
6324 				case GOT_STATUS_UNVERSIONED:
6325 				case GOT_STATUS_MODE_CHANGE:
6326 				case GOT_STATUS_NONEXISTENT:
6327 					break;
6328 				default:
6329 					errx(1, "invalid status code '%c'",
6330 					    optarg[i]);
6331 				}
6332 			}
6333 			if (ch == 's' && st.suppress)
6334 				option_conflict('s', 'S');
6335 			st.status_codes = optarg;
6336 			break;
6337 		default:
6338 			usage_status();
6339 			/* NOTREACHED */
6340 		}
6341 	}
6342 
6343 	argc -= optind;
6344 	argv += optind;
6345 
6346 	cwd = getcwd(NULL, 0);
6347 	if (cwd == NULL) {
6348 		error = got_error_from_errno("getcwd");
6349 		goto done;
6350 	}
6351 
6352 	error = got_repo_pack_fds_open(&pack_fds);
6353 	if (error != NULL)
6354 		goto done;
6355 
6356 	error = got_worktree_open(&worktree, cwd);
6357 	if (error) {
6358 		if (error->code == GOT_ERR_NOT_WORKTREE)
6359 			error = wrap_not_worktree_error(error, "status", cwd);
6360 		goto done;
6361 	}
6362 
6363 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6364 	    NULL, pack_fds);
6365 	if (error != NULL)
6366 		goto done;
6367 
6368 	error = apply_unveil(got_repo_get_path(repo), 1,
6369 	    got_worktree_get_root_path(worktree));
6370 	if (error)
6371 		goto done;
6372 
6373 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6374 	if (error)
6375 		goto done;
6376 
6377 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
6378 	    print_status, &st, check_cancelled, NULL);
6379 done:
6380 	if (pack_fds) {
6381 		const struct got_error *pack_err =
6382 		    got_repo_pack_fds_close(pack_fds);
6383 		if (error == NULL)
6384 			error = pack_err;
6385 	}
6386 
6387 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6388 	free(cwd);
6389 	return error;
6390 }
6391 
6392 __dead static void
6393 usage_ref(void)
6394 {
6395 	fprintf(stderr, "usage: %s ref [-dlt] [-c object] [-r repository-path] "
6396 	    "[-s reference] [name]\n", getprogname());
6397 	exit(1);
6398 }
6399 
6400 static const struct got_error *
6401 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
6402 {
6403 	static const struct got_error *err = NULL;
6404 	struct got_reflist_head refs;
6405 	struct got_reflist_entry *re;
6406 
6407 	TAILQ_INIT(&refs);
6408 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
6409 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6410 	    repo);
6411 	if (err)
6412 		return err;
6413 
6414 	TAILQ_FOREACH(re, &refs, entry) {
6415 		char *refstr;
6416 		refstr = got_ref_to_str(re->ref);
6417 		if (refstr == NULL) {
6418 			err = got_error_from_errno("got_ref_to_str");
6419 			break;
6420 		}
6421 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
6422 		free(refstr);
6423 	}
6424 
6425 	got_ref_list_free(&refs);
6426 	return err;
6427 }
6428 
6429 static const struct got_error *
6430 delete_ref_by_name(struct got_repository *repo, const char *refname)
6431 {
6432 	const struct got_error *err;
6433 	struct got_reference *ref;
6434 
6435 	err = got_ref_open(&ref, repo, refname, 0);
6436 	if (err)
6437 		return err;
6438 
6439 	err = delete_ref(repo, ref);
6440 	got_ref_close(ref);
6441 	return err;
6442 }
6443 
6444 static const struct got_error *
6445 add_ref(struct got_repository *repo, const char *refname, const char *target)
6446 {
6447 	const struct got_error *err = NULL;
6448 	struct got_object_id *id = NULL;
6449 	struct got_reference *ref = NULL;
6450 	struct got_reflist_head refs;
6451 
6452 	/*
6453 	 * Don't let the user create a reference name with a leading '-'.
6454 	 * While technically a valid reference name, this case is usually
6455 	 * an unintended typo.
6456 	 */
6457 	if (refname[0] == '-')
6458 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6459 
6460 	TAILQ_INIT(&refs);
6461 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6462 	if (err)
6463 		goto done;
6464 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
6465 	    &refs, repo);
6466 	got_ref_list_free(&refs);
6467 	if (err)
6468 		goto done;
6469 
6470 	err = got_ref_alloc(&ref, refname, id);
6471 	if (err)
6472 		goto done;
6473 
6474 	err = got_ref_write(ref, repo);
6475 done:
6476 	if (ref)
6477 		got_ref_close(ref);
6478 	free(id);
6479 	return err;
6480 }
6481 
6482 static const struct got_error *
6483 add_symref(struct got_repository *repo, const char *refname, const char *target)
6484 {
6485 	const struct got_error *err = NULL;
6486 	struct got_reference *ref = NULL;
6487 	struct got_reference *target_ref = NULL;
6488 
6489 	/*
6490 	 * Don't let the user create a reference name with a leading '-'.
6491 	 * While technically a valid reference name, this case is usually
6492 	 * an unintended typo.
6493 	 */
6494 	if (refname[0] == '-')
6495 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6496 
6497 	err = got_ref_open(&target_ref, repo, target, 0);
6498 	if (err)
6499 		return err;
6500 
6501 	err = got_ref_alloc_symref(&ref, refname, target_ref);
6502 	if (err)
6503 		goto done;
6504 
6505 	err = got_ref_write(ref, repo);
6506 done:
6507 	if (target_ref)
6508 		got_ref_close(target_ref);
6509 	if (ref)
6510 		got_ref_close(ref);
6511 	return err;
6512 }
6513 
6514 static const struct got_error *
6515 cmd_ref(int argc, char *argv[])
6516 {
6517 	const struct got_error *error = NULL;
6518 	struct got_repository *repo = NULL;
6519 	struct got_worktree *worktree = NULL;
6520 	char *cwd = NULL, *repo_path = NULL;
6521 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
6522 	const char *obj_arg = NULL, *symref_target= NULL;
6523 	char *refname = NULL;
6524 	int *pack_fds = NULL;
6525 
6526 #ifndef PROFILE
6527 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6528 	    "sendfd unveil", NULL) == -1)
6529 		err(1, "pledge");
6530 #endif
6531 
6532 	while ((ch = getopt(argc, argv, "c:dlr:s:t")) != -1) {
6533 		switch (ch) {
6534 		case 'c':
6535 			obj_arg = optarg;
6536 			break;
6537 		case 'd':
6538 			do_delete = 1;
6539 			break;
6540 		case 'l':
6541 			do_list = 1;
6542 			break;
6543 		case 'r':
6544 			repo_path = realpath(optarg, NULL);
6545 			if (repo_path == NULL)
6546 				return got_error_from_errno2("realpath",
6547 				    optarg);
6548 			got_path_strip_trailing_slashes(repo_path);
6549 			break;
6550 		case 's':
6551 			symref_target = optarg;
6552 			break;
6553 		case 't':
6554 			sort_by_time = 1;
6555 			break;
6556 		default:
6557 			usage_ref();
6558 			/* NOTREACHED */
6559 		}
6560 	}
6561 
6562 	if (obj_arg && do_list)
6563 		option_conflict('c', 'l');
6564 	if (obj_arg && do_delete)
6565 		option_conflict('c', 'd');
6566 	if (obj_arg && symref_target)
6567 		option_conflict('c', 's');
6568 	if (symref_target && do_delete)
6569 		option_conflict('s', 'd');
6570 	if (symref_target && do_list)
6571 		option_conflict('s', 'l');
6572 	if (do_delete && do_list)
6573 		option_conflict('d', 'l');
6574 	if (sort_by_time && !do_list)
6575 		errx(1, "-t option requires -l option");
6576 
6577 	argc -= optind;
6578 	argv += optind;
6579 
6580 	if (do_list) {
6581 		if (argc != 0 && argc != 1)
6582 			usage_ref();
6583 		if (argc == 1) {
6584 			refname = strdup(argv[0]);
6585 			if (refname == NULL) {
6586 				error = got_error_from_errno("strdup");
6587 				goto done;
6588 			}
6589 		}
6590 	} else {
6591 		if (argc != 1)
6592 			usage_ref();
6593 		refname = strdup(argv[0]);
6594 		if (refname == NULL) {
6595 			error = got_error_from_errno("strdup");
6596 			goto done;
6597 		}
6598 	}
6599 
6600 	if (refname)
6601 		got_path_strip_trailing_slashes(refname);
6602 
6603 	cwd = getcwd(NULL, 0);
6604 	if (cwd == NULL) {
6605 		error = got_error_from_errno("getcwd");
6606 		goto done;
6607 	}
6608 
6609 	error = got_repo_pack_fds_open(&pack_fds);
6610 	if (error != NULL)
6611 		goto done;
6612 
6613 	if (repo_path == NULL) {
6614 		error = got_worktree_open(&worktree, cwd);
6615 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6616 			goto done;
6617 		else
6618 			error = NULL;
6619 		if (worktree) {
6620 			repo_path =
6621 			    strdup(got_worktree_get_repo_path(worktree));
6622 			if (repo_path == NULL)
6623 				error = got_error_from_errno("strdup");
6624 			if (error)
6625 				goto done;
6626 		} else {
6627 			repo_path = strdup(cwd);
6628 			if (repo_path == NULL) {
6629 				error = got_error_from_errno("strdup");
6630 				goto done;
6631 			}
6632 		}
6633 	}
6634 
6635 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6636 	if (error != NULL)
6637 		goto done;
6638 
6639 #ifndef PROFILE
6640 	if (do_list) {
6641 		/* Remove "cpath" promise. */
6642 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6643 		    NULL) == -1)
6644 			err(1, "pledge");
6645 	}
6646 #endif
6647 
6648 	error = apply_unveil(got_repo_get_path(repo), do_list,
6649 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6650 	if (error)
6651 		goto done;
6652 
6653 	if (do_list)
6654 		error = list_refs(repo, refname, sort_by_time);
6655 	else if (do_delete)
6656 		error = delete_ref_by_name(repo, refname);
6657 	else if (symref_target)
6658 		error = add_symref(repo, refname, symref_target);
6659 	else {
6660 		if (obj_arg == NULL)
6661 			usage_ref();
6662 		error = add_ref(repo, refname, obj_arg);
6663 	}
6664 done:
6665 	free(refname);
6666 	if (repo) {
6667 		const struct got_error *close_err = got_repo_close(repo);
6668 		if (error == NULL)
6669 			error = close_err;
6670 	}
6671 	if (worktree)
6672 		got_worktree_close(worktree);
6673 	if (pack_fds) {
6674 		const struct got_error *pack_err =
6675 		    got_repo_pack_fds_close(pack_fds);
6676 		if (error == NULL)
6677 			error = pack_err;
6678 	}
6679 	free(cwd);
6680 	free(repo_path);
6681 	return error;
6682 }
6683 
6684 __dead static void
6685 usage_branch(void)
6686 {
6687 	fprintf(stderr, "usage: %s branch [-lnt] [-c commit] [-d name] "
6688 	    "[-r repository-path] [name]\n", getprogname());
6689 	exit(1);
6690 }
6691 
6692 static const struct got_error *
6693 list_branch(struct got_repository *repo, struct got_worktree *worktree,
6694     struct got_reference *ref)
6695 {
6696 	const struct got_error *err = NULL;
6697 	const char *refname, *marker = "  ";
6698 	char *refstr;
6699 
6700 	refname = got_ref_get_name(ref);
6701 	if (worktree && strcmp(refname,
6702 	    got_worktree_get_head_ref_name(worktree)) == 0) {
6703 		struct got_object_id *id = NULL;
6704 
6705 		err = got_ref_resolve(&id, repo, ref);
6706 		if (err)
6707 			return err;
6708 		if (got_object_id_cmp(id,
6709 		    got_worktree_get_base_commit_id(worktree)) == 0)
6710 			marker = "* ";
6711 		else
6712 			marker = "~ ";
6713 		free(id);
6714 	}
6715 
6716 	if (strncmp(refname, "refs/heads/", 11) == 0)
6717 		refname += 11;
6718 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6719 		refname += 18;
6720 	if (strncmp(refname, "refs/remotes/", 13) == 0)
6721 		refname += 13;
6722 
6723 	refstr = got_ref_to_str(ref);
6724 	if (refstr == NULL)
6725 		return got_error_from_errno("got_ref_to_str");
6726 
6727 	printf("%s%s: %s\n", marker, refname, refstr);
6728 	free(refstr);
6729 	return NULL;
6730 }
6731 
6732 static const struct got_error *
6733 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
6734 {
6735 	const char *refname;
6736 
6737 	if (worktree == NULL)
6738 		return got_error(GOT_ERR_NOT_WORKTREE);
6739 
6740 	refname = got_worktree_get_head_ref_name(worktree);
6741 
6742 	if (strncmp(refname, "refs/heads/", 11) == 0)
6743 		refname += 11;
6744 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6745 		refname += 18;
6746 
6747 	printf("%s\n", refname);
6748 
6749 	return NULL;
6750 }
6751 
6752 static const struct got_error *
6753 list_branches(struct got_repository *repo, struct got_worktree *worktree,
6754     int sort_by_time)
6755 {
6756 	static const struct got_error *err = NULL;
6757 	struct got_reflist_head refs;
6758 	struct got_reflist_entry *re;
6759 	struct got_reference *temp_ref = NULL;
6760 	int rebase_in_progress, histedit_in_progress;
6761 
6762 	TAILQ_INIT(&refs);
6763 
6764 	if (worktree) {
6765 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
6766 		    worktree);
6767 		if (err)
6768 			return err;
6769 
6770 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
6771 		    worktree);
6772 		if (err)
6773 			return err;
6774 
6775 		if (rebase_in_progress || histedit_in_progress) {
6776 			err = got_ref_open(&temp_ref, repo,
6777 			    got_worktree_get_head_ref_name(worktree), 0);
6778 			if (err)
6779 				return err;
6780 			list_branch(repo, worktree, temp_ref);
6781 			got_ref_close(temp_ref);
6782 		}
6783 	}
6784 
6785 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
6786 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6787 	    repo);
6788 	if (err)
6789 		return err;
6790 
6791 	TAILQ_FOREACH(re, &refs, entry)
6792 		list_branch(repo, worktree, re->ref);
6793 
6794 	got_ref_list_free(&refs);
6795 
6796 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
6797 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6798 	    repo);
6799 	if (err)
6800 		return err;
6801 
6802 	TAILQ_FOREACH(re, &refs, entry)
6803 		list_branch(repo, worktree, re->ref);
6804 
6805 	got_ref_list_free(&refs);
6806 
6807 	return NULL;
6808 }
6809 
6810 static const struct got_error *
6811 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
6812     const char *branch_name)
6813 {
6814 	const struct got_error *err = NULL;
6815 	struct got_reference *ref = NULL;
6816 	char *refname, *remote_refname = NULL;
6817 
6818 	if (strncmp(branch_name, "refs/", 5) == 0)
6819 		branch_name += 5;
6820 	if (strncmp(branch_name, "heads/", 6) == 0)
6821 		branch_name += 6;
6822 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6823 		branch_name += 8;
6824 
6825 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6826 		return got_error_from_errno("asprintf");
6827 
6828 	if (asprintf(&remote_refname, "refs/remotes/%s",
6829 	    branch_name) == -1) {
6830 		err = got_error_from_errno("asprintf");
6831 		goto done;
6832 	}
6833 
6834 	err = got_ref_open(&ref, repo, refname, 0);
6835 	if (err) {
6836 		const struct got_error *err2;
6837 		if (err->code != GOT_ERR_NOT_REF)
6838 			goto done;
6839 		/*
6840 		 * Keep 'err' intact such that if neither branch exists
6841 		 * we report "refs/heads" rather than "refs/remotes" in
6842 		 * our error message.
6843 		 */
6844 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6845 		if (err2)
6846 			goto done;
6847 		err = NULL;
6848 	}
6849 
6850 	if (worktree &&
6851 	    strcmp(got_worktree_get_head_ref_name(worktree),
6852 	    got_ref_get_name(ref)) == 0) {
6853 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6854 		    "will not delete this work tree's current branch");
6855 		goto done;
6856 	}
6857 
6858 	err = delete_ref(repo, ref);
6859 done:
6860 	if (ref)
6861 		got_ref_close(ref);
6862 	free(refname);
6863 	free(remote_refname);
6864 	return err;
6865 }
6866 
6867 static const struct got_error *
6868 add_branch(struct got_repository *repo, const char *branch_name,
6869     struct got_object_id *base_commit_id)
6870 {
6871 	const struct got_error *err = NULL;
6872 	struct got_reference *ref = NULL;
6873 	char *refname = NULL;
6874 
6875 	/*
6876 	 * Don't let the user create a branch name with a leading '-'.
6877 	 * While technically a valid reference name, this case is usually
6878 	 * an unintended typo.
6879 	 */
6880 	if (branch_name[0] == '-')
6881 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6882 
6883 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6884 		branch_name += 11;
6885 
6886 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6887 		err = got_error_from_errno("asprintf");
6888 		goto done;
6889 	}
6890 
6891 	err = got_ref_open(&ref, repo, refname, 0);
6892 	if (err == NULL) {
6893 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6894 		goto done;
6895 	} else if (err->code != GOT_ERR_NOT_REF)
6896 		goto done;
6897 
6898 	err = got_ref_alloc(&ref, refname, base_commit_id);
6899 	if (err)
6900 		goto done;
6901 
6902 	err = got_ref_write(ref, repo);
6903 done:
6904 	if (ref)
6905 		got_ref_close(ref);
6906 	free(refname);
6907 	return err;
6908 }
6909 
6910 static const struct got_error *
6911 cmd_branch(int argc, char *argv[])
6912 {
6913 	const struct got_error *error = NULL;
6914 	struct got_repository *repo = NULL;
6915 	struct got_worktree *worktree = NULL;
6916 	char *cwd = NULL, *repo_path = NULL;
6917 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
6918 	const char *delref = NULL, *commit_id_arg = NULL;
6919 	struct got_reference *ref = NULL;
6920 	struct got_pathlist_head paths;
6921 	struct got_object_id *commit_id = NULL;
6922 	char *commit_id_str = NULL;
6923 	int *pack_fds = NULL;
6924 
6925 	TAILQ_INIT(&paths);
6926 
6927 #ifndef PROFILE
6928 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6929 	    "sendfd unveil", NULL) == -1)
6930 		err(1, "pledge");
6931 #endif
6932 
6933 	while ((ch = getopt(argc, argv, "c:d:lnr:t")) != -1) {
6934 		switch (ch) {
6935 		case 'c':
6936 			commit_id_arg = optarg;
6937 			break;
6938 		case 'd':
6939 			delref = optarg;
6940 			break;
6941 		case 'l':
6942 			do_list = 1;
6943 			break;
6944 		case 'n':
6945 			do_update = 0;
6946 			break;
6947 		case 'r':
6948 			repo_path = realpath(optarg, NULL);
6949 			if (repo_path == NULL)
6950 				return got_error_from_errno2("realpath",
6951 				    optarg);
6952 			got_path_strip_trailing_slashes(repo_path);
6953 			break;
6954 		case 't':
6955 			sort_by_time = 1;
6956 			break;
6957 		default:
6958 			usage_branch();
6959 			/* NOTREACHED */
6960 		}
6961 	}
6962 
6963 	if (do_list && delref)
6964 		option_conflict('l', 'd');
6965 	if (sort_by_time && !do_list)
6966 		errx(1, "-t option requires -l option");
6967 
6968 	argc -= optind;
6969 	argv += optind;
6970 
6971 	if (!do_list && !delref && argc == 0)
6972 		do_show = 1;
6973 
6974 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
6975 		errx(1, "-c option can only be used when creating a branch");
6976 
6977 	if (do_list || delref) {
6978 		if (argc > 0)
6979 			usage_branch();
6980 	} else if (!do_show && argc != 1)
6981 		usage_branch();
6982 
6983 	cwd = getcwd(NULL, 0);
6984 	if (cwd == NULL) {
6985 		error = got_error_from_errno("getcwd");
6986 		goto done;
6987 	}
6988 
6989 	error = got_repo_pack_fds_open(&pack_fds);
6990 	if (error != NULL)
6991 		goto done;
6992 
6993 	if (repo_path == NULL) {
6994 		error = got_worktree_open(&worktree, cwd);
6995 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6996 			goto done;
6997 		else
6998 			error = NULL;
6999 		if (worktree) {
7000 			repo_path =
7001 			    strdup(got_worktree_get_repo_path(worktree));
7002 			if (repo_path == NULL)
7003 				error = got_error_from_errno("strdup");
7004 			if (error)
7005 				goto done;
7006 		} else {
7007 			repo_path = strdup(cwd);
7008 			if (repo_path == NULL) {
7009 				error = got_error_from_errno("strdup");
7010 				goto done;
7011 			}
7012 		}
7013 	}
7014 
7015 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7016 	if (error != NULL)
7017 		goto done;
7018 
7019 #ifndef PROFILE
7020 	if (do_list || do_show) {
7021 		/* Remove "cpath" promise. */
7022 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
7023 		    NULL) == -1)
7024 			err(1, "pledge");
7025 	}
7026 #endif
7027 
7028 	error = apply_unveil(got_repo_get_path(repo), do_list,
7029 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
7030 	if (error)
7031 		goto done;
7032 
7033 	if (do_show)
7034 		error = show_current_branch(repo, worktree);
7035 	else if (do_list)
7036 		error = list_branches(repo, worktree, sort_by_time);
7037 	else if (delref)
7038 		error = delete_branch(repo, worktree, delref);
7039 	else {
7040 		struct got_reflist_head refs;
7041 		TAILQ_INIT(&refs);
7042 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
7043 		    NULL);
7044 		if (error)
7045 			goto done;
7046 		if (commit_id_arg == NULL)
7047 			commit_id_arg = worktree ?
7048 			    got_worktree_get_head_ref_name(worktree) :
7049 			    GOT_REF_HEAD;
7050 		error = got_repo_match_object_id(&commit_id, NULL,
7051 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
7052 		got_ref_list_free(&refs);
7053 		if (error)
7054 			goto done;
7055 		error = add_branch(repo, argv[0], commit_id);
7056 		if (error)
7057 			goto done;
7058 		if (worktree && do_update) {
7059 			struct got_update_progress_arg upa;
7060 			char *branch_refname = NULL;
7061 
7062 			error = got_object_id_str(&commit_id_str, commit_id);
7063 			if (error)
7064 				goto done;
7065 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
7066 			    worktree);
7067 			if (error)
7068 				goto done;
7069 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
7070 			    == -1) {
7071 				error = got_error_from_errno("asprintf");
7072 				goto done;
7073 			}
7074 			error = got_ref_open(&ref, repo, branch_refname, 0);
7075 			free(branch_refname);
7076 			if (error)
7077 				goto done;
7078 			error = switch_head_ref(ref, commit_id, worktree,
7079 			    repo);
7080 			if (error)
7081 				goto done;
7082 			error = got_worktree_set_base_commit_id(worktree, repo,
7083 			    commit_id);
7084 			if (error)
7085 				goto done;
7086 			memset(&upa, 0, sizeof(upa));
7087 			error = got_worktree_checkout_files(worktree, &paths,
7088 			    repo, update_progress, &upa, check_cancelled,
7089 			    NULL);
7090 			if (error)
7091 				goto done;
7092 			if (upa.did_something) {
7093 				printf("Updated to %s: %s\n",
7094 				    got_worktree_get_head_ref_name(worktree),
7095 				    commit_id_str);
7096 			}
7097 			print_update_progress_stats(&upa);
7098 		}
7099 	}
7100 done:
7101 	if (ref)
7102 		got_ref_close(ref);
7103 	if (repo) {
7104 		const struct got_error *close_err = got_repo_close(repo);
7105 		if (error == NULL)
7106 			error = close_err;
7107 	}
7108 	if (worktree)
7109 		got_worktree_close(worktree);
7110 	if (pack_fds) {
7111 		const struct got_error *pack_err =
7112 		    got_repo_pack_fds_close(pack_fds);
7113 		if (error == NULL)
7114 			error = pack_err;
7115 	}
7116 	free(cwd);
7117 	free(repo_path);
7118 	free(commit_id);
7119 	free(commit_id_str);
7120 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7121 	return error;
7122 }
7123 
7124 
7125 __dead static void
7126 usage_tag(void)
7127 {
7128 	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
7129 	    "[-r repository-path] [-s signer-id] name\n", getprogname());
7130 	exit(1);
7131 }
7132 
7133 #if 0
7134 static const struct got_error *
7135 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
7136 {
7137 	const struct got_error *err = NULL;
7138 	struct got_reflist_entry *re, *se, *new;
7139 	struct got_object_id *re_id, *se_id;
7140 	struct got_tag_object *re_tag, *se_tag;
7141 	time_t re_time, se_time;
7142 
7143 	STAILQ_FOREACH(re, tags, entry) {
7144 		se = STAILQ_FIRST(sorted);
7145 		if (se == NULL) {
7146 			err = got_reflist_entry_dup(&new, re);
7147 			if (err)
7148 				return err;
7149 			STAILQ_INSERT_HEAD(sorted, new, entry);
7150 			continue;
7151 		} else {
7152 			err = got_ref_resolve(&re_id, repo, re->ref);
7153 			if (err)
7154 				break;
7155 			err = got_object_open_as_tag(&re_tag, repo, re_id);
7156 			free(re_id);
7157 			if (err)
7158 				break;
7159 			re_time = got_object_tag_get_tagger_time(re_tag);
7160 			got_object_tag_close(re_tag);
7161 		}
7162 
7163 		while (se) {
7164 			err = got_ref_resolve(&se_id, repo, re->ref);
7165 			if (err)
7166 				break;
7167 			err = got_object_open_as_tag(&se_tag, repo, se_id);
7168 			free(se_id);
7169 			if (err)
7170 				break;
7171 			se_time = got_object_tag_get_tagger_time(se_tag);
7172 			got_object_tag_close(se_tag);
7173 
7174 			if (se_time > re_time) {
7175 				err = got_reflist_entry_dup(&new, re);
7176 				if (err)
7177 					return err;
7178 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
7179 				break;
7180 			}
7181 			se = STAILQ_NEXT(se, entry);
7182 			continue;
7183 		}
7184 	}
7185 done:
7186 	return err;
7187 }
7188 #endif
7189 
7190 static const struct got_error *
7191 get_tag_refname(char **refname, const char *tag_name)
7192 {
7193 	const struct got_error *err;
7194 
7195 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
7196 		*refname = strdup(tag_name);
7197 		if (*refname == NULL)
7198 			return got_error_from_errno("strdup");
7199 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
7200 		err = got_error_from_errno("asprintf");
7201 		*refname = NULL;
7202 		return err;
7203 	}
7204 
7205 	return NULL;
7206 }
7207 
7208 static const struct got_error *
7209 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
7210     const char *allowed_signers, const char *revoked_signers, int verbosity)
7211 {
7212 	static const struct got_error *err = NULL;
7213 	struct got_reflist_head refs;
7214 	struct got_reflist_entry *re;
7215 	char *wanted_refname = NULL;
7216 	int bad_sigs = 0;
7217 
7218 	TAILQ_INIT(&refs);
7219 
7220 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
7221 	if (err)
7222 		return err;
7223 
7224 	if (tag_name) {
7225 		struct got_reference *ref;
7226 		err = get_tag_refname(&wanted_refname, tag_name);
7227 		if (err)
7228 			goto done;
7229 		/* Wanted tag reference should exist. */
7230 		err = got_ref_open(&ref, repo, wanted_refname, 0);
7231 		if (err)
7232 			goto done;
7233 		got_ref_close(ref);
7234 	}
7235 
7236 	TAILQ_FOREACH(re, &refs, entry) {
7237 		const char *refname;
7238 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
7239 		char datebuf[26];
7240 		const char *tagger, *ssh_sig = NULL;
7241 		char *sig_msg = NULL;
7242 		time_t tagger_time;
7243 		struct got_object_id *id;
7244 		struct got_tag_object *tag;
7245 		struct got_commit_object *commit = NULL;
7246 
7247 		refname = got_ref_get_name(re->ref);
7248 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
7249 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
7250 			continue;
7251 		refname += 10;
7252 		refstr = got_ref_to_str(re->ref);
7253 		if (refstr == NULL) {
7254 			err = got_error_from_errno("got_ref_to_str");
7255 			break;
7256 		}
7257 
7258 		err = got_ref_resolve(&id, repo, re->ref);
7259 		if (err)
7260 			break;
7261 		err = got_object_open_as_tag(&tag, repo, id);
7262 		if (err) {
7263 			if (err->code != GOT_ERR_OBJ_TYPE) {
7264 				free(id);
7265 				break;
7266 			}
7267 			/* "lightweight" tag */
7268 			err = got_object_open_as_commit(&commit, repo, id);
7269 			if (err) {
7270 				free(id);
7271 				break;
7272 			}
7273 			tagger = got_object_commit_get_committer(commit);
7274 			tagger_time =
7275 			    got_object_commit_get_committer_time(commit);
7276 			err = got_object_id_str(&id_str, id);
7277 			free(id);
7278 			if (err)
7279 				break;
7280 		} else {
7281 			free(id);
7282 			tagger = got_object_tag_get_tagger(tag);
7283 			tagger_time = got_object_tag_get_tagger_time(tag);
7284 			err = got_object_id_str(&id_str,
7285 			    got_object_tag_get_object_id(tag));
7286 			if (err)
7287 				break;
7288 		}
7289 
7290 		if (tag && verify_tags) {
7291 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
7292 			    got_object_tag_get_message(tag));
7293 			if (ssh_sig && allowed_signers == NULL) {
7294 				err = got_error_msg(
7295 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
7296 				    "SSH signature verification requires "
7297 				        "setting allowed_signers in "
7298 				        "got.conf(5)");
7299 				break;
7300 			}
7301 		}
7302 
7303 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
7304 		free(refstr);
7305 		printf("from: %s\n", tagger);
7306 		datestr = get_datestr(&tagger_time, datebuf);
7307 		if (datestr)
7308 			printf("date: %s UTC\n", datestr);
7309 		if (commit)
7310 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
7311 		else {
7312 			switch (got_object_tag_get_object_type(tag)) {
7313 			case GOT_OBJ_TYPE_BLOB:
7314 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
7315 				    id_str);
7316 				break;
7317 			case GOT_OBJ_TYPE_TREE:
7318 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
7319 				    id_str);
7320 				break;
7321 			case GOT_OBJ_TYPE_COMMIT:
7322 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
7323 				    id_str);
7324 				break;
7325 			case GOT_OBJ_TYPE_TAG:
7326 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
7327 				    id_str);
7328 				break;
7329 			default:
7330 				break;
7331 			}
7332 		}
7333 		free(id_str);
7334 
7335 		if (ssh_sig) {
7336 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
7337 				allowed_signers, revoked_signers, verbosity);
7338 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
7339 				bad_sigs = 1;
7340 			else if (err)
7341 				break;
7342 			printf("signature: %s", sig_msg);
7343 			free(sig_msg);
7344 			sig_msg = NULL;
7345 		}
7346 
7347 		if (commit) {
7348 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
7349 			if (err)
7350 				break;
7351 			got_object_commit_close(commit);
7352 		} else {
7353 			tagmsg0 = strdup(got_object_tag_get_message(tag));
7354 			got_object_tag_close(tag);
7355 			if (tagmsg0 == NULL) {
7356 				err = got_error_from_errno("strdup");
7357 				break;
7358 			}
7359 		}
7360 
7361 		tagmsg = tagmsg0;
7362 		do {
7363 			line = strsep(&tagmsg, "\n");
7364 			if (line)
7365 				printf(" %s\n", line);
7366 		} while (line);
7367 		free(tagmsg0);
7368 	}
7369 done:
7370 	got_ref_list_free(&refs);
7371 	free(wanted_refname);
7372 
7373 	if (err == NULL && bad_sigs)
7374 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
7375 	return err;
7376 }
7377 
7378 static const struct got_error *
7379 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
7380     const char *tag_name, const char *repo_path)
7381 {
7382 	const struct got_error *err = NULL;
7383 	char *template = NULL, *initial_content = NULL;
7384 	char *editor = NULL;
7385 	int initial_content_len;
7386 	int fd = -1;
7387 
7388 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
7389 		err = got_error_from_errno("asprintf");
7390 		goto done;
7391 	}
7392 
7393 	initial_content_len = asprintf(&initial_content,
7394 	    "\n# tagging commit %s as %s\n",
7395 	    commit_id_str, tag_name);
7396 	if (initial_content_len == -1) {
7397 		err = got_error_from_errno("asprintf");
7398 		goto done;
7399 	}
7400 
7401 	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
7402 	if (err)
7403 		goto done;
7404 
7405 	if (write(fd, initial_content, initial_content_len) == -1) {
7406 		err = got_error_from_errno2("write", *tagmsg_path);
7407 		goto done;
7408 	}
7409 
7410 	err = get_editor(&editor);
7411 	if (err)
7412 		goto done;
7413 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
7414 	    initial_content_len, 1);
7415 done:
7416 	free(initial_content);
7417 	free(template);
7418 	free(editor);
7419 
7420 	if (fd != -1 && close(fd) == -1 && err == NULL)
7421 		err = got_error_from_errno2("close", *tagmsg_path);
7422 
7423 	if (err) {
7424 		free(*tagmsg);
7425 		*tagmsg = NULL;
7426 	}
7427 	return err;
7428 }
7429 
7430 static const struct got_error *
7431 add_tag(struct got_repository *repo, const char *tagger,
7432     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
7433     const char *signer_id, int verbosity)
7434 {
7435 	const struct got_error *err = NULL;
7436 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
7437 	char *label = NULL, *commit_id_str = NULL;
7438 	struct got_reference *ref = NULL;
7439 	char *refname = NULL, *tagmsg = NULL;
7440 	char *tagmsg_path = NULL, *tag_id_str = NULL;
7441 	int preserve_tagmsg = 0;
7442 	struct got_reflist_head refs;
7443 
7444 	TAILQ_INIT(&refs);
7445 
7446 	/*
7447 	 * Don't let the user create a tag name with a leading '-'.
7448 	 * While technically a valid reference name, this case is usually
7449 	 * an unintended typo.
7450 	 */
7451 	if (tag_name[0] == '-')
7452 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
7453 
7454 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
7455 	if (err)
7456 		goto done;
7457 
7458 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
7459 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
7460 	if (err)
7461 		goto done;
7462 
7463 	err = got_object_id_str(&commit_id_str, commit_id);
7464 	if (err)
7465 		goto done;
7466 
7467 	err = get_tag_refname(&refname, tag_name);
7468 	if (err)
7469 		goto done;
7470 	if (strncmp("refs/tags/", tag_name, 10) == 0)
7471 		tag_name += 10;
7472 
7473 	err = got_ref_open(&ref, repo, refname, 0);
7474 	if (err == NULL) {
7475 		err = got_error(GOT_ERR_TAG_EXISTS);
7476 		goto done;
7477 	} else if (err->code != GOT_ERR_NOT_REF)
7478 		goto done;
7479 
7480 	if (tagmsg_arg == NULL) {
7481 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
7482 		    tag_name, got_repo_get_path(repo));
7483 		if (err) {
7484 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7485 			    tagmsg_path != NULL)
7486 				preserve_tagmsg = 1;
7487 			goto done;
7488 		}
7489 		/* Editor is done; we can now apply unveil(2) */
7490 		err = got_sigs_apply_unveil();
7491 		if (err)
7492 			goto done;
7493 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
7494 		if (err)
7495 			goto done;
7496 	}
7497 
7498 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
7499 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
7500 	    verbosity);
7501 	if (err) {
7502 		if (tagmsg_path)
7503 			preserve_tagmsg = 1;
7504 		goto done;
7505 	}
7506 
7507 	err = got_ref_alloc(&ref, refname, tag_id);
7508 	if (err) {
7509 		if (tagmsg_path)
7510 			preserve_tagmsg = 1;
7511 		goto done;
7512 	}
7513 
7514 	err = got_ref_write(ref, repo);
7515 	if (err) {
7516 		if (tagmsg_path)
7517 			preserve_tagmsg = 1;
7518 		goto done;
7519 	}
7520 
7521 	err = got_object_id_str(&tag_id_str, tag_id);
7522 	if (err) {
7523 		if (tagmsg_path)
7524 			preserve_tagmsg = 1;
7525 		goto done;
7526 	}
7527 	printf("Created tag %s\n", tag_id_str);
7528 done:
7529 	if (preserve_tagmsg) {
7530 		fprintf(stderr, "%s: tag message preserved in %s\n",
7531 		    getprogname(), tagmsg_path);
7532 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
7533 		err = got_error_from_errno2("unlink", tagmsg_path);
7534 	free(tag_id_str);
7535 	if (ref)
7536 		got_ref_close(ref);
7537 	free(commit_id);
7538 	free(commit_id_str);
7539 	free(refname);
7540 	free(tagmsg);
7541 	free(tagmsg_path);
7542 	got_ref_list_free(&refs);
7543 	return err;
7544 }
7545 
7546 static const struct got_error *
7547 cmd_tag(int argc, char *argv[])
7548 {
7549 	const struct got_error *error = NULL;
7550 	struct got_repository *repo = NULL;
7551 	struct got_worktree *worktree = NULL;
7552 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
7553 	char *gitconfig_path = NULL, *tagger = NULL;
7554 	char *allowed_signers = NULL, *revoked_signers = NULL;
7555 	const char *signer_id = NULL;
7556 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
7557 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
7558 	int *pack_fds = NULL;
7559 
7560 #ifndef PROFILE
7561 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7562 	    "sendfd unveil", NULL) == -1)
7563 		err(1, "pledge");
7564 #endif
7565 
7566 	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
7567 		switch (ch) {
7568 		case 'c':
7569 			commit_id_arg = optarg;
7570 			break;
7571 		case 'l':
7572 			do_list = 1;
7573 			break;
7574 		case 'm':
7575 			tagmsg = optarg;
7576 			break;
7577 		case 'r':
7578 			repo_path = realpath(optarg, NULL);
7579 			if (repo_path == NULL) {
7580 				error = got_error_from_errno2("realpath",
7581 				    optarg);
7582 				goto done;
7583 			}
7584 			got_path_strip_trailing_slashes(repo_path);
7585 			break;
7586 		case 's':
7587 			signer_id = optarg;
7588 			break;
7589 		case 'V':
7590 			verify_tags = 1;
7591 			break;
7592 		case 'v':
7593 			if (verbosity < 0)
7594 				verbosity = 0;
7595 			else if (verbosity < 3)
7596 				verbosity++;
7597 			break;
7598 		default:
7599 			usage_tag();
7600 			/* NOTREACHED */
7601 		}
7602 	}
7603 
7604 	argc -= optind;
7605 	argv += optind;
7606 
7607 	if (do_list || verify_tags) {
7608 		if (commit_id_arg != NULL)
7609 			errx(1,
7610 			    "-c option can only be used when creating a tag");
7611 		if (tagmsg) {
7612 			if (do_list)
7613 				option_conflict('l', 'm');
7614 			else
7615 				option_conflict('V', 'm');
7616 		}
7617 		if (signer_id) {
7618 			if (do_list)
7619 				option_conflict('l', 's');
7620 			else
7621 				option_conflict('V', 's');
7622 		}
7623 		if (argc > 1)
7624 			usage_tag();
7625 	} else if (argc != 1)
7626 		usage_tag();
7627 
7628 	if (argc == 1)
7629 		tag_name = argv[0];
7630 
7631 	cwd = getcwd(NULL, 0);
7632 	if (cwd == NULL) {
7633 		error = got_error_from_errno("getcwd");
7634 		goto done;
7635 	}
7636 
7637 	error = got_repo_pack_fds_open(&pack_fds);
7638 	if (error != NULL)
7639 		goto done;
7640 
7641 	if (repo_path == NULL) {
7642 		error = got_worktree_open(&worktree, cwd);
7643 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7644 			goto done;
7645 		else
7646 			error = NULL;
7647 		if (worktree) {
7648 			repo_path =
7649 			    strdup(got_worktree_get_repo_path(worktree));
7650 			if (repo_path == NULL)
7651 				error = got_error_from_errno("strdup");
7652 			if (error)
7653 				goto done;
7654 		} else {
7655 			repo_path = strdup(cwd);
7656 			if (repo_path == NULL) {
7657 				error = got_error_from_errno("strdup");
7658 				goto done;
7659 			}
7660 		}
7661 	}
7662 
7663 	if (do_list || verify_tags) {
7664 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7665 		if (error != NULL)
7666 			goto done;
7667 		error = get_allowed_signers(&allowed_signers, repo, worktree);
7668 		if (error)
7669 			goto done;
7670 		error = get_revoked_signers(&revoked_signers, repo, worktree);
7671 		if (error)
7672 			goto done;
7673 		if (worktree) {
7674 			/* Release work tree lock. */
7675 			got_worktree_close(worktree);
7676 			worktree = NULL;
7677 		}
7678 
7679 		/*
7680 		 * Remove "cpath" promise unless needed for signature tmpfile
7681 		 * creation.
7682 		 */
7683 		if (verify_tags)
7684 		 	got_sigs_apply_unveil();
7685 		else {
7686 #ifndef PROFILE
7687 			if (pledge("stdio rpath wpath flock proc exec sendfd "
7688 			    "unveil", NULL) == -1)
7689 				err(1, "pledge");
7690 #endif
7691 		}
7692 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
7693 		if (error)
7694 			goto done;
7695 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
7696 		    revoked_signers, verbosity);
7697 	} else {
7698 		error = get_gitconfig_path(&gitconfig_path);
7699 		if (error)
7700 			goto done;
7701 		error = got_repo_open(&repo, repo_path, gitconfig_path,
7702 		    pack_fds);
7703 		if (error != NULL)
7704 			goto done;
7705 
7706 		error = get_author(&tagger, repo, worktree);
7707 		if (error)
7708 			goto done;
7709 		if (signer_id == NULL)
7710 			signer_id = get_signer_id(repo, worktree);
7711 
7712 		if (tagmsg) {
7713 			if (signer_id) {
7714 				error = got_sigs_apply_unveil();
7715 				if (error)
7716 					goto done;
7717 			}
7718 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7719 			if (error)
7720 				goto done;
7721 		}
7722 
7723 		if (commit_id_arg == NULL) {
7724 			struct got_reference *head_ref;
7725 			struct got_object_id *commit_id;
7726 			error = got_ref_open(&head_ref, repo,
7727 			    worktree ? got_worktree_get_head_ref_name(worktree)
7728 			    : GOT_REF_HEAD, 0);
7729 			if (error)
7730 				goto done;
7731 			error = got_ref_resolve(&commit_id, repo, head_ref);
7732 			got_ref_close(head_ref);
7733 			if (error)
7734 				goto done;
7735 			error = got_object_id_str(&commit_id_str, commit_id);
7736 			free(commit_id);
7737 			if (error)
7738 				goto done;
7739 		}
7740 
7741 		if (worktree) {
7742 			/* Release work tree lock. */
7743 			got_worktree_close(worktree);
7744 			worktree = NULL;
7745 		}
7746 
7747 		error = add_tag(repo, tagger, tag_name,
7748 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
7749 		    signer_id, verbosity);
7750 	}
7751 done:
7752 	if (repo) {
7753 		const struct got_error *close_err = got_repo_close(repo);
7754 		if (error == NULL)
7755 			error = close_err;
7756 	}
7757 	if (worktree)
7758 		got_worktree_close(worktree);
7759 	if (pack_fds) {
7760 		const struct got_error *pack_err =
7761 		    got_repo_pack_fds_close(pack_fds);
7762 		if (error == NULL)
7763 			error = pack_err;
7764 	}
7765 	free(cwd);
7766 	free(repo_path);
7767 	free(gitconfig_path);
7768 	free(commit_id_str);
7769 	free(tagger);
7770 	free(allowed_signers);
7771 	free(revoked_signers);
7772 	return error;
7773 }
7774 
7775 __dead static void
7776 usage_add(void)
7777 {
7778 	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
7779 	exit(1);
7780 }
7781 
7782 static const struct got_error *
7783 add_progress(void *arg, unsigned char status, const char *path)
7784 {
7785 	while (path[0] == '/')
7786 		path++;
7787 	printf("%c  %s\n", status, path);
7788 	return NULL;
7789 }
7790 
7791 static const struct got_error *
7792 cmd_add(int argc, char *argv[])
7793 {
7794 	const struct got_error *error = NULL;
7795 	struct got_repository *repo = NULL;
7796 	struct got_worktree *worktree = NULL;
7797 	char *cwd = NULL;
7798 	struct got_pathlist_head paths;
7799 	struct got_pathlist_entry *pe;
7800 	int ch, can_recurse = 0, no_ignores = 0;
7801 	int *pack_fds = NULL;
7802 
7803 	TAILQ_INIT(&paths);
7804 
7805 #ifndef PROFILE
7806 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7807 	    NULL) == -1)
7808 		err(1, "pledge");
7809 #endif
7810 
7811 	while ((ch = getopt(argc, argv, "IR")) != -1) {
7812 		switch (ch) {
7813 		case 'I':
7814 			no_ignores = 1;
7815 			break;
7816 		case 'R':
7817 			can_recurse = 1;
7818 			break;
7819 		default:
7820 			usage_add();
7821 			/* NOTREACHED */
7822 		}
7823 	}
7824 
7825 	argc -= optind;
7826 	argv += optind;
7827 
7828 	if (argc < 1)
7829 		usage_add();
7830 
7831 	cwd = getcwd(NULL, 0);
7832 	if (cwd == NULL) {
7833 		error = got_error_from_errno("getcwd");
7834 		goto done;
7835 	}
7836 
7837 	error = got_repo_pack_fds_open(&pack_fds);
7838 	if (error != NULL)
7839 		goto done;
7840 
7841 	error = got_worktree_open(&worktree, cwd);
7842 	if (error) {
7843 		if (error->code == GOT_ERR_NOT_WORKTREE)
7844 			error = wrap_not_worktree_error(error, "add", cwd);
7845 		goto done;
7846 	}
7847 
7848 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7849 	    NULL, pack_fds);
7850 	if (error != NULL)
7851 		goto done;
7852 
7853 	error = apply_unveil(got_repo_get_path(repo), 1,
7854 	    got_worktree_get_root_path(worktree));
7855 	if (error)
7856 		goto done;
7857 
7858 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7859 	if (error)
7860 		goto done;
7861 
7862 	if (!can_recurse) {
7863 		char *ondisk_path;
7864 		struct stat sb;
7865 		TAILQ_FOREACH(pe, &paths, entry) {
7866 			if (asprintf(&ondisk_path, "%s/%s",
7867 			    got_worktree_get_root_path(worktree),
7868 			    pe->path) == -1) {
7869 				error = got_error_from_errno("asprintf");
7870 				goto done;
7871 			}
7872 			if (lstat(ondisk_path, &sb) == -1) {
7873 				if (errno == ENOENT) {
7874 					free(ondisk_path);
7875 					continue;
7876 				}
7877 				error = got_error_from_errno2("lstat",
7878 				    ondisk_path);
7879 				free(ondisk_path);
7880 				goto done;
7881 			}
7882 			free(ondisk_path);
7883 			if (S_ISDIR(sb.st_mode)) {
7884 				error = got_error_msg(GOT_ERR_BAD_PATH,
7885 				    "adding directories requires -R option");
7886 				goto done;
7887 			}
7888 		}
7889 	}
7890 
7891 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
7892 	    NULL, repo, no_ignores);
7893 done:
7894 	if (repo) {
7895 		const struct got_error *close_err = got_repo_close(repo);
7896 		if (error == NULL)
7897 			error = close_err;
7898 	}
7899 	if (worktree)
7900 		got_worktree_close(worktree);
7901 	if (pack_fds) {
7902 		const struct got_error *pack_err =
7903 		    got_repo_pack_fds_close(pack_fds);
7904 		if (error == NULL)
7905 			error = pack_err;
7906 	}
7907 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7908 	free(cwd);
7909 	return error;
7910 }
7911 
7912 __dead static void
7913 usage_remove(void)
7914 {
7915 	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
7916 	    getprogname());
7917 	exit(1);
7918 }
7919 
7920 static const struct got_error *
7921 print_remove_status(void *arg, unsigned char status,
7922     unsigned char staged_status, const char *path)
7923 {
7924 	while (path[0] == '/')
7925 		path++;
7926 	if (status == GOT_STATUS_NONEXISTENT)
7927 		return NULL;
7928 	if (status == staged_status && (status == GOT_STATUS_DELETE))
7929 		status = GOT_STATUS_NO_CHANGE;
7930 	printf("%c%c %s\n", status, staged_status, path);
7931 	return NULL;
7932 }
7933 
7934 static const struct got_error *
7935 cmd_remove(int argc, char *argv[])
7936 {
7937 	const struct got_error *error = NULL;
7938 	struct got_worktree *worktree = NULL;
7939 	struct got_repository *repo = NULL;
7940 	const char *status_codes = NULL;
7941 	char *cwd = NULL;
7942 	struct got_pathlist_head paths;
7943 	struct got_pathlist_entry *pe;
7944 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
7945 	int ignore_missing_paths = 0;
7946 	int *pack_fds = NULL;
7947 
7948 	TAILQ_INIT(&paths);
7949 
7950 #ifndef PROFILE
7951 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7952 	    NULL) == -1)
7953 		err(1, "pledge");
7954 #endif
7955 
7956 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
7957 		switch (ch) {
7958 		case 'f':
7959 			delete_local_mods = 1;
7960 			ignore_missing_paths = 1;
7961 			break;
7962 		case 'k':
7963 			keep_on_disk = 1;
7964 			break;
7965 		case 'R':
7966 			can_recurse = 1;
7967 			break;
7968 		case 's':
7969 			for (i = 0; i < strlen(optarg); i++) {
7970 				switch (optarg[i]) {
7971 				case GOT_STATUS_MODIFY:
7972 					delete_local_mods = 1;
7973 					break;
7974 				case GOT_STATUS_MISSING:
7975 					ignore_missing_paths = 1;
7976 					break;
7977 				default:
7978 					errx(1, "invalid status code '%c'",
7979 					    optarg[i]);
7980 				}
7981 			}
7982 			status_codes = optarg;
7983 			break;
7984 		default:
7985 			usage_remove();
7986 			/* NOTREACHED */
7987 		}
7988 	}
7989 
7990 	argc -= optind;
7991 	argv += optind;
7992 
7993 	if (argc < 1)
7994 		usage_remove();
7995 
7996 	cwd = getcwd(NULL, 0);
7997 	if (cwd == NULL) {
7998 		error = got_error_from_errno("getcwd");
7999 		goto done;
8000 	}
8001 
8002 	error = got_repo_pack_fds_open(&pack_fds);
8003 	if (error != NULL)
8004 		goto done;
8005 
8006 	error = got_worktree_open(&worktree, cwd);
8007 	if (error) {
8008 		if (error->code == GOT_ERR_NOT_WORKTREE)
8009 			error = wrap_not_worktree_error(error, "remove", cwd);
8010 		goto done;
8011 	}
8012 
8013 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8014 	    NULL, pack_fds);
8015 	if (error)
8016 		goto done;
8017 
8018 	error = apply_unveil(got_repo_get_path(repo), 1,
8019 	    got_worktree_get_root_path(worktree));
8020 	if (error)
8021 		goto done;
8022 
8023 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8024 	if (error)
8025 		goto done;
8026 
8027 	if (!can_recurse) {
8028 		char *ondisk_path;
8029 		struct stat sb;
8030 		TAILQ_FOREACH(pe, &paths, entry) {
8031 			if (asprintf(&ondisk_path, "%s/%s",
8032 			    got_worktree_get_root_path(worktree),
8033 			    pe->path) == -1) {
8034 				error = got_error_from_errno("asprintf");
8035 				goto done;
8036 			}
8037 			if (lstat(ondisk_path, &sb) == -1) {
8038 				if (errno == ENOENT) {
8039 					free(ondisk_path);
8040 					continue;
8041 				}
8042 				error = got_error_from_errno2("lstat",
8043 				    ondisk_path);
8044 				free(ondisk_path);
8045 				goto done;
8046 			}
8047 			free(ondisk_path);
8048 			if (S_ISDIR(sb.st_mode)) {
8049 				error = got_error_msg(GOT_ERR_BAD_PATH,
8050 				    "removing directories requires -R option");
8051 				goto done;
8052 			}
8053 		}
8054 	}
8055 
8056 	error = got_worktree_schedule_delete(worktree, &paths,
8057 	    delete_local_mods, status_codes, print_remove_status, NULL,
8058 	    repo, keep_on_disk, ignore_missing_paths);
8059 done:
8060 	if (repo) {
8061 		const struct got_error *close_err = got_repo_close(repo);
8062 		if (error == NULL)
8063 			error = close_err;
8064 	}
8065 	if (worktree)
8066 		got_worktree_close(worktree);
8067 	if (pack_fds) {
8068 		const struct got_error *pack_err =
8069 		    got_repo_pack_fds_close(pack_fds);
8070 		if (error == NULL)
8071 			error = pack_err;
8072 	}
8073 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8074 	free(cwd);
8075 	return error;
8076 }
8077 
8078 __dead static void
8079 usage_patch(void)
8080 {
8081 	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
8082 	    "[patchfile]\n", getprogname());
8083 	exit(1);
8084 }
8085 
8086 static const struct got_error *
8087 patch_from_stdin(int *patchfd)
8088 {
8089 	const struct got_error *err = NULL;
8090 	ssize_t r;
8091 	char buf[BUFSIZ];
8092 	sig_t sighup, sigint, sigquit;
8093 
8094 	*patchfd = got_opentempfd();
8095 	if (*patchfd == -1)
8096 		return got_error_from_errno("got_opentempfd");
8097 
8098 	sighup = signal(SIGHUP, SIG_DFL);
8099 	sigint = signal(SIGINT, SIG_DFL);
8100 	sigquit = signal(SIGQUIT, SIG_DFL);
8101 
8102 	for (;;) {
8103 		r = read(0, buf, sizeof(buf));
8104 		if (r == -1) {
8105 			err = got_error_from_errno("read");
8106 			break;
8107 		}
8108 		if (r == 0)
8109 			break;
8110 		if (write(*patchfd, buf, r) == -1) {
8111 			err = got_error_from_errno("write");
8112 			break;
8113 		}
8114 	}
8115 
8116 	signal(SIGHUP, sighup);
8117 	signal(SIGINT, sigint);
8118 	signal(SIGQUIT, sigquit);
8119 
8120 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
8121 		err = got_error_from_errno("lseek");
8122 
8123 	if (err != NULL) {
8124 		close(*patchfd);
8125 		*patchfd = -1;
8126 	}
8127 
8128 	return err;
8129 }
8130 
8131 static const struct got_error *
8132 patch_progress(void *arg, const char *old, const char *new,
8133     unsigned char status, const struct got_error *error, int old_from,
8134     int old_lines, int new_from, int new_lines, int offset,
8135     int ws_mangled, const struct got_error *hunk_err)
8136 {
8137 	const char *path = new == NULL ? old : new;
8138 
8139 	while (*path == '/')
8140 		path++;
8141 
8142 	if (status != 0)
8143 		printf("%c  %s\n", status, path);
8144 
8145 	if (error != NULL)
8146 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
8147 
8148 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
8149 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
8150 		    old_lines, new_from, new_lines);
8151 		if (hunk_err != NULL)
8152 			printf("%s\n", hunk_err->msg);
8153 		else if (offset != 0)
8154 			printf("applied with offset %d\n", offset);
8155 		else
8156 			printf("hunk contains mangled whitespace\n");
8157 	}
8158 
8159 	return NULL;
8160 }
8161 
8162 static const struct got_error *
8163 cmd_patch(int argc, char *argv[])
8164 {
8165 	const struct got_error *error = NULL, *close_error = NULL;
8166 	struct got_worktree *worktree = NULL;
8167 	struct got_repository *repo = NULL;
8168 	struct got_reflist_head refs;
8169 	struct got_object_id *commit_id = NULL;
8170 	const char *commit_id_str = NULL;
8171 	struct stat sb;
8172 	const char *errstr;
8173 	char *cwd = NULL;
8174 	int ch, nop = 0, strip = -1, reverse = 0;
8175 	int patchfd;
8176 	int *pack_fds = NULL;
8177 
8178 	TAILQ_INIT(&refs);
8179 
8180 #ifndef PROFILE
8181 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
8182 	    "unveil", NULL) == -1)
8183 		err(1, "pledge");
8184 #endif
8185 
8186 	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
8187 		switch (ch) {
8188 		case 'c':
8189 			commit_id_str = optarg;
8190 			break;
8191 		case 'n':
8192 			nop = 1;
8193 			break;
8194 		case 'p':
8195 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
8196 			if (errstr != NULL)
8197 				errx(1, "pathname strip count is %s: %s",
8198 				     errstr, optarg);
8199 			break;
8200 		case 'R':
8201 			reverse = 1;
8202 			break;
8203 		default:
8204 			usage_patch();
8205 			/* NOTREACHED */
8206 		}
8207 	}
8208 
8209 	argc -= optind;
8210 	argv += optind;
8211 
8212 	if (argc == 0) {
8213 		error = patch_from_stdin(&patchfd);
8214 		if (error)
8215 			return error;
8216 	} else if (argc == 1) {
8217 		patchfd = open(argv[0], O_RDONLY);
8218 		if (patchfd == -1) {
8219 			error = got_error_from_errno2("open", argv[0]);
8220 			return error;
8221 		}
8222 		if (fstat(patchfd, &sb) == -1) {
8223 			error = got_error_from_errno2("fstat", argv[0]);
8224 			goto done;
8225 		}
8226 		if (!S_ISREG(sb.st_mode)) {
8227 			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
8228 			goto done;
8229 		}
8230 	} else
8231 		usage_patch();
8232 
8233 	if ((cwd = getcwd(NULL, 0)) == NULL) {
8234 		error = got_error_from_errno("getcwd");
8235 		goto done;
8236 	}
8237 
8238 	error = got_repo_pack_fds_open(&pack_fds);
8239 	if (error != NULL)
8240 		goto done;
8241 
8242 	error = got_worktree_open(&worktree, cwd);
8243 	if (error != NULL)
8244 		goto done;
8245 
8246 	const char *repo_path = got_worktree_get_repo_path(worktree);
8247 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8248 	if (error != NULL)
8249 		goto done;
8250 
8251 	error = apply_unveil(got_repo_get_path(repo), 0,
8252 	    got_worktree_get_root_path(worktree));
8253 	if (error != NULL)
8254 		goto done;
8255 
8256 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8257 	if (error)
8258 		goto done;
8259 
8260 	if (commit_id_str != NULL) {
8261 		error = got_repo_match_object_id(&commit_id, NULL,
8262 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
8263 		if (error)
8264 			goto done;
8265 	}
8266 
8267 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
8268 	    commit_id, &patch_progress, NULL, check_cancelled, NULL);
8269 
8270 done:
8271 	got_ref_list_free(&refs);
8272 	free(commit_id);
8273 	if (repo) {
8274 		close_error = got_repo_close(repo);
8275 		if (error == NULL)
8276 			error = close_error;
8277 	}
8278 	if (worktree != NULL) {
8279 		close_error = got_worktree_close(worktree);
8280 		if (error == NULL)
8281 			error = close_error;
8282 	}
8283 	if (pack_fds) {
8284 		const struct got_error *pack_err =
8285 		    got_repo_pack_fds_close(pack_fds);
8286 		if (error == NULL)
8287 			error = pack_err;
8288 	}
8289 	free(cwd);
8290 	return error;
8291 }
8292 
8293 __dead static void
8294 usage_revert(void)
8295 {
8296 	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
8297 	    getprogname());
8298 	exit(1);
8299 }
8300 
8301 static const struct got_error *
8302 revert_progress(void *arg, unsigned char status, const char *path)
8303 {
8304 	if (status == GOT_STATUS_UNVERSIONED)
8305 		return NULL;
8306 
8307 	while (path[0] == '/')
8308 		path++;
8309 	printf("%c  %s\n", status, path);
8310 	return NULL;
8311 }
8312 
8313 struct choose_patch_arg {
8314 	FILE *patch_script_file;
8315 	const char *action;
8316 };
8317 
8318 static const struct got_error *
8319 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
8320     int nchanges, const char *action)
8321 {
8322 	const struct got_error *err;
8323 	char *line = NULL;
8324 	size_t linesize = 0;
8325 	ssize_t linelen;
8326 
8327 	switch (status) {
8328 	case GOT_STATUS_ADD:
8329 		printf("A  %s\n%s this addition? [y/n] ", path, action);
8330 		break;
8331 	case GOT_STATUS_DELETE:
8332 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
8333 		break;
8334 	case GOT_STATUS_MODIFY:
8335 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
8336 			return got_error_from_errno("fseek");
8337 		printf(GOT_COMMIT_SEP_STR);
8338 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
8339 			printf("%s", line);
8340 		if (linelen == -1 && ferror(patch_file)) {
8341 			err = got_error_from_errno("getline");
8342 			free(line);
8343 			return err;
8344 		}
8345 		free(line);
8346 		printf(GOT_COMMIT_SEP_STR);
8347 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
8348 		    path, n, nchanges, action);
8349 		break;
8350 	default:
8351 		return got_error_path(path, GOT_ERR_FILE_STATUS);
8352 	}
8353 
8354 	fflush(stdout);
8355 	return NULL;
8356 }
8357 
8358 static const struct got_error *
8359 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
8360     FILE *patch_file, int n, int nchanges)
8361 {
8362 	const struct got_error *err = NULL;
8363 	char *line = NULL;
8364 	size_t linesize = 0;
8365 	ssize_t linelen;
8366 	int resp = ' ';
8367 	struct choose_patch_arg *a = arg;
8368 
8369 	*choice = GOT_PATCH_CHOICE_NONE;
8370 
8371 	if (a->patch_script_file) {
8372 		char *nl;
8373 		err = show_change(status, path, patch_file, n, nchanges,
8374 		    a->action);
8375 		if (err)
8376 			return err;
8377 		linelen = getline(&line, &linesize, a->patch_script_file);
8378 		if (linelen == -1) {
8379 			if (ferror(a->patch_script_file))
8380 				return got_error_from_errno("getline");
8381 			return NULL;
8382 		}
8383 		nl = strchr(line, '\n');
8384 		if (nl)
8385 			*nl = '\0';
8386 		if (strcmp(line, "y") == 0) {
8387 			*choice = GOT_PATCH_CHOICE_YES;
8388 			printf("y\n");
8389 		} else if (strcmp(line, "n") == 0) {
8390 			*choice = GOT_PATCH_CHOICE_NO;
8391 			printf("n\n");
8392 		} else if (strcmp(line, "q") == 0 &&
8393 		    status == GOT_STATUS_MODIFY) {
8394 			*choice = GOT_PATCH_CHOICE_QUIT;
8395 			printf("q\n");
8396 		} else
8397 			printf("invalid response '%s'\n", line);
8398 		free(line);
8399 		return NULL;
8400 	}
8401 
8402 	while (resp != 'y' && resp != 'n' && resp != 'q') {
8403 		err = show_change(status, path, patch_file, n, nchanges,
8404 		    a->action);
8405 		if (err)
8406 			return err;
8407 		resp = getchar();
8408 		if (resp == '\n')
8409 			resp = getchar();
8410 		if (status == GOT_STATUS_MODIFY) {
8411 			if (resp != 'y' && resp != 'n' && resp != 'q') {
8412 				printf("invalid response '%c'\n", resp);
8413 				resp = ' ';
8414 			}
8415 		} else if (resp != 'y' && resp != 'n') {
8416 				printf("invalid response '%c'\n", resp);
8417 				resp = ' ';
8418 		}
8419 	}
8420 
8421 	if (resp == 'y')
8422 		*choice = GOT_PATCH_CHOICE_YES;
8423 	else if (resp == 'n')
8424 		*choice = GOT_PATCH_CHOICE_NO;
8425 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
8426 		*choice = GOT_PATCH_CHOICE_QUIT;
8427 
8428 	return NULL;
8429 }
8430 
8431 struct wt_commitable_path_arg {
8432 	struct got_pathlist_head	*commit_paths;
8433 	int				*has_changes;
8434 };
8435 
8436 /*
8437  * Shortcut work tree status callback to determine if the set of paths scanned
8438  * has at least one versioned path that is being modified and, if not NULL, is
8439  * in the arg->commit_paths list.  Set arg and return GOT_ERR_FILE_MODIFIED as
8440  * soon as a path is passed with a status that satisfies this criteria.
8441  */
8442 static const struct got_error *
8443 worktree_has_commitable_path(void *arg, unsigned char status,
8444     unsigned char staged_status, const char *path,
8445     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
8446     struct got_object_id *commit_id, int dirfd, const char *de_name)
8447 {
8448 	struct wt_commitable_path_arg *a = arg;
8449 
8450 	if (status == staged_status && (status == GOT_STATUS_DELETE))
8451 		status = GOT_STATUS_NO_CHANGE;
8452 
8453 	if (!(status == GOT_STATUS_NO_CHANGE ||
8454 	    status == GOT_STATUS_UNVERSIONED) ||
8455 	    staged_status != GOT_STATUS_NO_CHANGE) {
8456 		if (a->commit_paths != NULL) {
8457 			struct got_pathlist_entry *pe;
8458 
8459 			TAILQ_FOREACH(pe, a->commit_paths, entry) {
8460 				if (strncmp(path, pe->path,
8461 				    pe->path_len) == 0) {
8462 					*a->has_changes = 1;
8463 					break;
8464 				}
8465 			}
8466 		} else
8467 			*a->has_changes = 1;
8468 
8469 		if (*a->has_changes)
8470 			return got_error(GOT_ERR_FILE_MODIFIED);
8471 	}
8472 
8473 	return NULL;
8474 }
8475 
8476 /*
8477  * Check that the changeset of the commit identified by id is
8478  * comprised of at least one modified path that is being committed.
8479  */
8480 static const struct got_error *
8481 commit_path_changed_in_worktree(struct wt_commitable_path_arg *wcpa,
8482     struct got_object_id *id, struct got_worktree *worktree,
8483     struct got_repository *repo)
8484 {
8485 	const struct got_error		*err;
8486 	struct got_pathlist_head	 paths;
8487 	struct got_commit_object	*commit = NULL, *pcommit = NULL;
8488 	struct got_tree_object		*tree = NULL, *ptree = NULL;
8489 	struct got_object_qid		*pid;
8490 
8491 	TAILQ_INIT(&paths);
8492 
8493 	err = got_object_open_as_commit(&commit, repo, id);
8494 	if (err)
8495 		goto done;
8496 
8497 	err = got_object_open_as_tree(&tree, repo,
8498 	    got_object_commit_get_tree_id(commit));
8499 	if (err)
8500 		goto done;
8501 
8502 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8503 	if (pid != NULL) {
8504 		err = got_object_open_as_commit(&pcommit, repo, &pid->id);
8505 		if (err)
8506 			goto done;
8507 
8508 		err = got_object_open_as_tree(&ptree, repo,
8509 		    got_object_commit_get_tree_id(pcommit));
8510 		if (err)
8511 			goto done;
8512 	}
8513 
8514 	err = got_diff_tree(ptree, tree, NULL, NULL, -1, -1, "", "", repo,
8515 	    got_diff_tree_collect_changed_paths, &paths, 0);
8516 	if (err)
8517 		goto done;
8518 
8519 	err = got_worktree_status(worktree, &paths, repo, 0,
8520 	    worktree_has_commitable_path, wcpa, check_cancelled, NULL);
8521 	if (err && err->code == GOT_ERR_FILE_MODIFIED) {
8522 		/*
8523 		 * At least one changed path in the referenced commit is
8524 		 * modified in the work tree, that's all we need to know!
8525 		 */
8526 		err = NULL;
8527 	}
8528 
8529 done:
8530 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
8531 	if (commit)
8532 		got_object_commit_close(commit);
8533 	if (pcommit)
8534 		got_object_commit_close(pcommit);
8535 	if (tree)
8536 		got_object_tree_close(tree);
8537 	if (ptree)
8538 		got_object_tree_close(ptree);
8539 	return err;
8540 }
8541 
8542 /*
8543  * Remove any "logmsg" reference comprised entirely of paths that have
8544  * been reverted in this work tree. If any path in the logmsg ref changeset
8545  * remains in a changed state in the worktree, do not remove the reference.
8546  */
8547 static const struct got_error *
8548 rm_logmsg_ref(struct got_worktree *worktree, struct got_repository *repo)
8549 {
8550 	const struct got_error		*err;
8551 	struct got_reflist_head		 refs;
8552 	struct got_reflist_entry	*re;
8553 	struct got_commit_object	*commit = NULL;
8554 	struct got_object_id		*commit_id = NULL;
8555 	struct wt_commitable_path_arg	 wcpa;
8556 	char				*uuidstr = NULL;
8557 
8558 	TAILQ_INIT(&refs);
8559 
8560 	err = got_worktree_get_uuid(&uuidstr, worktree);
8561 	if (err)
8562 		goto done;
8563 
8564 	err = got_ref_list(&refs, repo, "refs/got/worktree",
8565 	    got_ref_cmp_by_name, repo);
8566 	if (err)
8567 		goto done;
8568 
8569 	TAILQ_FOREACH(re, &refs, entry) {
8570 		const char	*refname;
8571 		int		 has_changes = 0;
8572 
8573 		refname = got_ref_get_name(re->ref);
8574 
8575 		if (!strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8576 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN))
8577 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
8578 		else if (!strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
8579 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN))
8580 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
8581 		else
8582 			continue;
8583 
8584 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
8585 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
8586 		else
8587 			continue;
8588 
8589 		err = got_repo_match_object_id(&commit_id, NULL, refname,
8590 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8591 		if (err)
8592 			goto done;
8593 
8594 		err = got_object_open_as_commit(&commit, repo, commit_id);
8595 		if (err)
8596 			goto done;
8597 
8598 		wcpa.commit_paths = NULL;
8599 		wcpa.has_changes = &has_changes;
8600 
8601 		err = commit_path_changed_in_worktree(&wcpa, commit_id,
8602 		    worktree, repo);
8603 		if (err)
8604 			goto done;
8605 
8606 		if (!has_changes) {
8607 			err = got_ref_delete(re->ref, repo);
8608 			if (err)
8609 				goto done;
8610 		}
8611 
8612 		got_object_commit_close(commit);
8613 		commit = NULL;
8614 		free(commit_id);
8615 		commit_id = NULL;
8616 	}
8617 
8618 done:
8619 	free(uuidstr);
8620 	free(commit_id);
8621 	got_ref_list_free(&refs);
8622 	if (commit)
8623 		got_object_commit_close(commit);
8624 	return err;
8625 }
8626 
8627 static const struct got_error *
8628 cmd_revert(int argc, char *argv[])
8629 {
8630 	const struct got_error *error = NULL;
8631 	struct got_worktree *worktree = NULL;
8632 	struct got_repository *repo = NULL;
8633 	char *cwd = NULL, *path = NULL;
8634 	struct got_pathlist_head paths;
8635 	struct got_pathlist_entry *pe;
8636 	int ch, can_recurse = 0, pflag = 0;
8637 	FILE *patch_script_file = NULL;
8638 	const char *patch_script_path = NULL;
8639 	struct choose_patch_arg cpa;
8640 	int *pack_fds = NULL;
8641 
8642 	TAILQ_INIT(&paths);
8643 
8644 #ifndef PROFILE
8645 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8646 	    "unveil", NULL) == -1)
8647 		err(1, "pledge");
8648 #endif
8649 
8650 	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
8651 		switch (ch) {
8652 		case 'F':
8653 			patch_script_path = optarg;
8654 			break;
8655 		case 'p':
8656 			pflag = 1;
8657 			break;
8658 		case 'R':
8659 			can_recurse = 1;
8660 			break;
8661 		default:
8662 			usage_revert();
8663 			/* NOTREACHED */
8664 		}
8665 	}
8666 
8667 	argc -= optind;
8668 	argv += optind;
8669 
8670 	if (argc < 1)
8671 		usage_revert();
8672 	if (patch_script_path && !pflag)
8673 		errx(1, "-F option can only be used together with -p option");
8674 
8675 	cwd = getcwd(NULL, 0);
8676 	if (cwd == NULL) {
8677 		error = got_error_from_errno("getcwd");
8678 		goto done;
8679 	}
8680 
8681 	error = got_repo_pack_fds_open(&pack_fds);
8682 	if (error != NULL)
8683 		goto done;
8684 
8685 	error = got_worktree_open(&worktree, cwd);
8686 	if (error) {
8687 		if (error->code == GOT_ERR_NOT_WORKTREE)
8688 			error = wrap_not_worktree_error(error, "revert", cwd);
8689 		goto done;
8690 	}
8691 
8692 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8693 	    NULL, pack_fds);
8694 	if (error != NULL)
8695 		goto done;
8696 
8697 	if (patch_script_path) {
8698 		patch_script_file = fopen(patch_script_path, "re");
8699 		if (patch_script_file == NULL) {
8700 			error = got_error_from_errno2("fopen",
8701 			    patch_script_path);
8702 			goto done;
8703 		}
8704 	}
8705 
8706 	/*
8707 	 * XXX "c" perm needed on repo dir to delete merge references.
8708 	 */
8709 	error = apply_unveil(got_repo_get_path(repo), 0,
8710 	    got_worktree_get_root_path(worktree));
8711 	if (error)
8712 		goto done;
8713 
8714 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8715 	if (error)
8716 		goto done;
8717 
8718 	if (!can_recurse) {
8719 		char *ondisk_path;
8720 		struct stat sb;
8721 		TAILQ_FOREACH(pe, &paths, entry) {
8722 			if (asprintf(&ondisk_path, "%s/%s",
8723 			    got_worktree_get_root_path(worktree),
8724 			    pe->path) == -1) {
8725 				error = got_error_from_errno("asprintf");
8726 				goto done;
8727 			}
8728 			if (lstat(ondisk_path, &sb) == -1) {
8729 				if (errno == ENOENT) {
8730 					free(ondisk_path);
8731 					continue;
8732 				}
8733 				error = got_error_from_errno2("lstat",
8734 				    ondisk_path);
8735 				free(ondisk_path);
8736 				goto done;
8737 			}
8738 			free(ondisk_path);
8739 			if (S_ISDIR(sb.st_mode)) {
8740 				error = got_error_msg(GOT_ERR_BAD_PATH,
8741 				    "reverting directories requires -R option");
8742 				goto done;
8743 			}
8744 		}
8745 	}
8746 
8747 	cpa.patch_script_file = patch_script_file;
8748 	cpa.action = "revert";
8749 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
8750 	    pflag ? choose_patch : NULL, &cpa, repo);
8751 
8752 	error = rm_logmsg_ref(worktree, repo);
8753 done:
8754 	if (patch_script_file && fclose(patch_script_file) == EOF &&
8755 	    error == NULL)
8756 		error = got_error_from_errno2("fclose", patch_script_path);
8757 	if (repo) {
8758 		const struct got_error *close_err = got_repo_close(repo);
8759 		if (error == NULL)
8760 			error = close_err;
8761 	}
8762 	if (worktree)
8763 		got_worktree_close(worktree);
8764 	if (pack_fds) {
8765 		const struct got_error *pack_err =
8766 		    got_repo_pack_fds_close(pack_fds);
8767 		if (error == NULL)
8768 			error = pack_err;
8769 	}
8770 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8771 	free(path);
8772 	free(cwd);
8773 	return error;
8774 }
8775 
8776 __dead static void
8777 usage_commit(void)
8778 {
8779 	fprintf(stderr, "usage: %s commit [-CNnS] [-A author] [-F path] "
8780 	    "[-m message] [path ...]\n", getprogname());
8781 	exit(1);
8782 }
8783 
8784 struct collect_commit_logmsg_arg {
8785 	const char *cmdline_log;
8786 	const char *prepared_log;
8787 	const char *merged_log;
8788 	int non_interactive;
8789 	const char *editor;
8790 	const char *worktree_path;
8791 	const char *branch_name;
8792 	const char *repo_path;
8793 	char *logmsg_path;
8794 
8795 };
8796 
8797 static const struct got_error *
8798 read_prepared_logmsg(char **logmsg, const char *path)
8799 {
8800 	const struct got_error *err = NULL;
8801 	FILE *f = NULL;
8802 	struct stat sb;
8803 	size_t r;
8804 
8805 	*logmsg = NULL;
8806 	memset(&sb, 0, sizeof(sb));
8807 
8808 	f = fopen(path, "re");
8809 	if (f == NULL)
8810 		return got_error_from_errno2("fopen", path);
8811 
8812 	if (fstat(fileno(f), &sb) == -1) {
8813 		err = got_error_from_errno2("fstat", path);
8814 		goto done;
8815 	}
8816 	if (sb.st_size == 0) {
8817 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
8818 		goto done;
8819 	}
8820 
8821 	*logmsg = malloc(sb.st_size + 1);
8822 	if (*logmsg == NULL) {
8823 		err = got_error_from_errno("malloc");
8824 		goto done;
8825 	}
8826 
8827 	r = fread(*logmsg, 1, sb.st_size, f);
8828 	if (r != sb.st_size) {
8829 		if (ferror(f))
8830 			err = got_error_from_errno2("fread", path);
8831 		else
8832 			err = got_error(GOT_ERR_IO);
8833 		goto done;
8834 	}
8835 	(*logmsg)[sb.st_size] = '\0';
8836 done:
8837 	if (fclose(f) == EOF && err == NULL)
8838 		err = got_error_from_errno2("fclose", path);
8839 	if (err) {
8840 		free(*logmsg);
8841 		*logmsg = NULL;
8842 	}
8843 	return err;
8844 }
8845 
8846 static const struct got_error *
8847 collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
8848     const char *diff_path, char **logmsg, void *arg)
8849 {
8850 	char *initial_content = NULL;
8851 	struct got_pathlist_entry *pe;
8852 	const struct got_error *err = NULL;
8853 	char *template = NULL;
8854 	char *prepared_msg = NULL, *merged_msg = NULL;
8855 	struct collect_commit_logmsg_arg *a = arg;
8856 	int initial_content_len;
8857 	int fd = -1;
8858 	size_t len;
8859 
8860 	/* if a message was specified on the command line, just use it */
8861 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
8862 		len = strlen(a->cmdline_log) + 1;
8863 		*logmsg = malloc(len + 1);
8864 		if (*logmsg == NULL)
8865 			return got_error_from_errno("malloc");
8866 		strlcpy(*logmsg, a->cmdline_log, len);
8867 		return NULL;
8868 	} else if (a->prepared_log != NULL && a->non_interactive)
8869 		return read_prepared_logmsg(logmsg, a->prepared_log);
8870 
8871 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
8872 		return got_error_from_errno("asprintf");
8873 
8874 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
8875 	if (err)
8876 		goto done;
8877 
8878 	if (a->prepared_log) {
8879 		err = read_prepared_logmsg(&prepared_msg, a->prepared_log);
8880 		if (err)
8881 			goto done;
8882 	} else if (a->merged_log) {
8883 		err = read_prepared_logmsg(&merged_msg, a->merged_log);
8884 		if (err)
8885 			goto done;
8886 	}
8887 
8888 	initial_content_len = asprintf(&initial_content,
8889 	    "%s%s\n# changes to be committed on branch %s:\n",
8890 	    prepared_msg ? prepared_msg : "",
8891 	    merged_msg ? merged_msg : "", a->branch_name);
8892 	if (initial_content_len == -1) {
8893 		err = got_error_from_errno("asprintf");
8894 		goto done;
8895 	}
8896 
8897 	if (write(fd, initial_content, initial_content_len) == -1) {
8898 		err = got_error_from_errno2("write", a->logmsg_path);
8899 		goto done;
8900 	}
8901 
8902 	TAILQ_FOREACH(pe, commitable_paths, entry) {
8903 		struct got_commitable *ct = pe->data;
8904 		dprintf(fd, "#  %c  %s\n",
8905 		    got_commitable_get_status(ct),
8906 		    got_commitable_get_path(ct));
8907 	}
8908 
8909 	if (diff_path) {
8910 		dprintf(fd, "# detailed changes can be viewed in %s\n",
8911 		    diff_path);
8912 	}
8913 
8914 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
8915 	    initial_content_len, a->prepared_log ? 0 : 1);
8916 done:
8917 	free(initial_content);
8918 	free(template);
8919 	free(prepared_msg);
8920 	free(merged_msg);
8921 
8922 	if (fd != -1 && close(fd) == -1 && err == NULL)
8923 		err = got_error_from_errno2("close", a->logmsg_path);
8924 
8925 	/* Editor is done; we can now apply unveil(2) */
8926 	if (err == NULL)
8927 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
8928 	if (err) {
8929 		free(*logmsg);
8930 		*logmsg = NULL;
8931 	}
8932 	return err;
8933 }
8934 
8935 static const struct got_error *
8936 cat_logmsg(FILE *f, struct got_commit_object *commit, const char *idstr,
8937     const char *type, int has_content)
8938 {
8939 	const struct got_error	*err = NULL;
8940 	char			*logmsg = NULL;
8941 
8942 	err = got_object_commit_get_logmsg(&logmsg, commit);
8943 	if (err)
8944 		return err;
8945 
8946 	if (fprintf(f, "%s# log message of %s commit %s:%s",
8947 	    has_content ? "\n" : "", type, idstr, logmsg) < 0)
8948 		err = got_ferror(f, GOT_ERR_IO);
8949 
8950 	free(logmsg);
8951 	return err;
8952 }
8953 
8954 /*
8955  * Lookup "logmsg" references of backed-out and cherrypicked commits
8956  * belonging to the current work tree. If found, and the worktree has
8957  * at least one modified file that was changed in the referenced commit,
8958  * add its log message to a new temporary file at *logmsg_path.
8959  * Add all refs found to matched_refs to be scheduled for removal on
8960  * successful commit.
8961  */
8962 static const struct got_error *
8963 lookup_logmsg_ref(char **logmsg_path, struct got_pathlist_head *paths,
8964     struct got_reflist_head *matched_refs, struct got_worktree *worktree,
8965     struct got_repository *repo)
8966 {
8967 	const struct got_error		*err;
8968 	struct got_commit_object	*commit = NULL;
8969 	struct got_object_id		*id = NULL;
8970 	struct got_reflist_head		 refs;
8971 	struct got_reflist_entry	*re, *re_match;
8972 	FILE				*f = NULL;
8973 	char				*uuidstr = NULL;
8974 	int				 added_logmsg = 0;
8975 
8976 	TAILQ_INIT(&refs);
8977 
8978 	*logmsg_path = NULL;
8979 
8980 	err = got_worktree_get_uuid(&uuidstr, worktree);
8981 	if (err)
8982 		goto done;
8983 
8984 	err = got_ref_list(&refs, repo, "refs/got/worktree",
8985 	    got_ref_cmp_by_name, repo);
8986 	if (err)
8987 		goto done;
8988 
8989 	TAILQ_FOREACH(re, &refs, entry) {
8990 		const char			*refname, *type;
8991 		struct wt_commitable_path_arg	 wcpa;
8992 		int				 add_logmsg = 0;
8993 
8994 		refname = got_ref_get_name(re->ref);
8995 
8996 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8997 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
8998 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
8999 			type = "cherrypicked";
9000 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
9001 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
9002 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
9003 			type = "backed-out";
9004 		} else
9005 			continue;
9006 
9007 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
9008 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
9009 		else
9010 			continue;
9011 
9012 		err = got_repo_match_object_id(&id, NULL, refname,
9013 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9014 		if (err)
9015 			goto done;
9016 
9017 		err = got_object_open_as_commit(&commit, repo, id);
9018 		if (err)
9019 			goto done;
9020 
9021 		wcpa.commit_paths = paths;
9022 		wcpa.has_changes = &add_logmsg;
9023 
9024 		err = commit_path_changed_in_worktree(&wcpa, id,
9025 		    worktree, repo);
9026 		if (err)
9027 			goto done;
9028 
9029 		if (add_logmsg) {
9030 			if (f == NULL) {
9031 				err = got_opentemp_named(logmsg_path, &f,
9032 				    "got-commit-logmsg", "");
9033 				if (err)
9034 					goto done;
9035 			}
9036 			err = cat_logmsg(f, commit, refname, type,
9037 			    added_logmsg);
9038 			if (err)
9039 				goto done;
9040 			if (!added_logmsg)
9041 				++added_logmsg;
9042 
9043 			err = got_reflist_entry_dup(&re_match, re);
9044 			if (err)
9045 				goto done;
9046 			TAILQ_INSERT_HEAD(matched_refs, re_match, entry);
9047 		}
9048 
9049 		got_object_commit_close(commit);
9050 		commit = NULL;
9051 		free(id);
9052 		id = NULL;
9053 	}
9054 
9055 done:
9056 	free(id);
9057 	free(uuidstr);
9058 	got_ref_list_free(&refs);
9059 	if (commit)
9060 		got_object_commit_close(commit);
9061 	if (f && fclose(f) == EOF && err == NULL)
9062 		err = got_error_from_errno("fclose");
9063 	if (!added_logmsg) {
9064 		if (*logmsg_path && unlink(*logmsg_path) != 0 && err == NULL)
9065 			err = got_error_from_errno2("unlink", *logmsg_path);
9066 		*logmsg_path = NULL;
9067 	}
9068 	return err;
9069 }
9070 
9071 static const struct got_error *
9072 cmd_commit(int argc, char *argv[])
9073 {
9074 	const struct got_error *error = NULL;
9075 	struct got_worktree *worktree = NULL;
9076 	struct got_repository *repo = NULL;
9077 	char *cwd = NULL, *id_str = NULL;
9078 	struct got_object_id *id = NULL;
9079 	const char *logmsg = NULL;
9080 	char *prepared_logmsg = NULL, *merged_logmsg = NULL;
9081 	struct collect_commit_logmsg_arg cl_arg;
9082 	const char *author = NULL;
9083 	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
9084 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
9085 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
9086 	int show_diff = 1, commit_conflicts = 0;
9087 	struct got_pathlist_head paths;
9088 	struct got_reflist_head refs;
9089 	struct got_reflist_entry *re;
9090 	int *pack_fds = NULL;
9091 
9092 	TAILQ_INIT(&refs);
9093 	TAILQ_INIT(&paths);
9094 	cl_arg.logmsg_path = NULL;
9095 
9096 #ifndef PROFILE
9097 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9098 	    "unveil", NULL) == -1)
9099 		err(1, "pledge");
9100 #endif
9101 
9102 	while ((ch = getopt(argc, argv, "A:CF:m:NnS")) != -1) {
9103 		switch (ch) {
9104 		case 'A':
9105 			author = optarg;
9106 			error = valid_author(author);
9107 			if (error)
9108 				return error;
9109 			break;
9110 		case 'C':
9111 			commit_conflicts = 1;
9112 			break;
9113 		case 'F':
9114 			if (logmsg != NULL)
9115 				option_conflict('F', 'm');
9116 			prepared_logmsg = realpath(optarg, NULL);
9117 			if (prepared_logmsg == NULL)
9118 				return got_error_from_errno2("realpath",
9119 				    optarg);
9120 			break;
9121 		case 'm':
9122 			if (prepared_logmsg)
9123 				option_conflict('m', 'F');
9124 			logmsg = optarg;
9125 			break;
9126 		case 'N':
9127 			non_interactive = 1;
9128 			break;
9129 		case 'n':
9130 			show_diff = 0;
9131 			break;
9132 		case 'S':
9133 			allow_bad_symlinks = 1;
9134 			break;
9135 		default:
9136 			usage_commit();
9137 			/* NOTREACHED */
9138 		}
9139 	}
9140 
9141 	argc -= optind;
9142 	argv += optind;
9143 
9144 	cwd = getcwd(NULL, 0);
9145 	if (cwd == NULL) {
9146 		error = got_error_from_errno("getcwd");
9147 		goto done;
9148 	}
9149 
9150 	error = got_repo_pack_fds_open(&pack_fds);
9151 	if (error != NULL)
9152 		goto done;
9153 
9154 	error = got_worktree_open(&worktree, cwd);
9155 	if (error) {
9156 		if (error->code == GOT_ERR_NOT_WORKTREE)
9157 			error = wrap_not_worktree_error(error, "commit", cwd);
9158 		goto done;
9159 	}
9160 
9161 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
9162 	if (error)
9163 		goto done;
9164 	if (rebase_in_progress) {
9165 		error = got_error(GOT_ERR_REBASING);
9166 		goto done;
9167 	}
9168 
9169 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
9170 	    worktree);
9171 	if (error)
9172 		goto done;
9173 
9174 	error = get_gitconfig_path(&gitconfig_path);
9175 	if (error)
9176 		goto done;
9177 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9178 	    gitconfig_path, pack_fds);
9179 	if (error != NULL)
9180 		goto done;
9181 
9182 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
9183 	if (error)
9184 		goto done;
9185 	if (merge_in_progress) {
9186 		error = got_error(GOT_ERR_MERGE_BUSY);
9187 		goto done;
9188 	}
9189 
9190 	error = get_author(&committer, repo, worktree);
9191 	if (error)
9192 		goto done;
9193 
9194 	if (author == NULL)
9195 		author = committer;
9196 
9197 	/*
9198 	 * unveil(2) traverses exec(2); if an editor is used we have
9199 	 * to apply unveil after the log message has been written.
9200 	 */
9201 	if (logmsg == NULL || strlen(logmsg) == 0)
9202 		error = get_editor(&editor);
9203 	else
9204 		error = apply_unveil(got_repo_get_path(repo), 0,
9205 		    got_worktree_get_root_path(worktree));
9206 	if (error)
9207 		goto done;
9208 
9209 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
9210 	if (error)
9211 		goto done;
9212 
9213 	if (prepared_logmsg == NULL) {
9214 		error = lookup_logmsg_ref(&merged_logmsg,
9215 		    argc > 0 ? &paths : NULL, &refs, worktree, repo);
9216 		if (error)
9217 			goto done;
9218 	}
9219 
9220 	cl_arg.editor = editor;
9221 	cl_arg.cmdline_log = logmsg;
9222 	cl_arg.prepared_log = prepared_logmsg;
9223 	cl_arg.merged_log = merged_logmsg;
9224 	cl_arg.non_interactive = non_interactive;
9225 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
9226 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
9227 	if (!histedit_in_progress) {
9228 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
9229 			error = got_error(GOT_ERR_COMMIT_BRANCH);
9230 			goto done;
9231 		}
9232 		cl_arg.branch_name += 11;
9233 	}
9234 	cl_arg.repo_path = got_repo_get_path(repo);
9235 	error = got_worktree_commit(&id, worktree, &paths, author, committer,
9236 	    allow_bad_symlinks, show_diff, commit_conflicts,
9237 	    collect_commit_logmsg, &cl_arg, print_status, NULL, repo);
9238 	if (error) {
9239 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
9240 		    cl_arg.logmsg_path != NULL)
9241 			preserve_logmsg = 1;
9242 		goto done;
9243 	}
9244 
9245 	error = got_object_id_str(&id_str, id);
9246 	if (error)
9247 		goto done;
9248 	printf("Created commit %s\n", id_str);
9249 
9250 	TAILQ_FOREACH(re, &refs, entry) {
9251 		error = got_ref_delete(re->ref, repo);
9252 		if (error)
9253 			goto done;
9254 	}
9255 
9256 done:
9257 	if (preserve_logmsg) {
9258 		fprintf(stderr, "%s: log message preserved in %s\n",
9259 		    getprogname(), cl_arg.logmsg_path);
9260 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
9261 	    error == NULL)
9262 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
9263 	free(cl_arg.logmsg_path);
9264 	if (merged_logmsg && unlink(merged_logmsg) == -1 && error == NULL)
9265 		error = got_error_from_errno2("unlink", merged_logmsg);
9266 	free(merged_logmsg);
9267 	if (repo) {
9268 		const struct got_error *close_err = got_repo_close(repo);
9269 		if (error == NULL)
9270 			error = close_err;
9271 	}
9272 	if (worktree)
9273 		got_worktree_close(worktree);
9274 	if (pack_fds) {
9275 		const struct got_error *pack_err =
9276 		    got_repo_pack_fds_close(pack_fds);
9277 		if (error == NULL)
9278 			error = pack_err;
9279 	}
9280 	got_ref_list_free(&refs);
9281 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
9282 	free(cwd);
9283 	free(id_str);
9284 	free(gitconfig_path);
9285 	free(editor);
9286 	free(committer);
9287 	free(prepared_logmsg);
9288 	return error;
9289 }
9290 
9291 __dead static void
9292 usage_send(void)
9293 {
9294 	fprintf(stderr, "usage: %s send [-afqTv] [-b branch] [-d branch] "
9295 	    "[-r repository-path] [-t tag] [remote-repository]\n",
9296 	    getprogname());
9297 	exit(1);
9298 }
9299 
9300 static void
9301 print_load_info(int print_colored, int print_found, int print_trees,
9302     int ncolored, int nfound, int ntrees)
9303 {
9304 	if (print_colored) {
9305 		printf("%d commit%s colored", ncolored,
9306 		    ncolored == 1 ? "" : "s");
9307 	}
9308 	if (print_found) {
9309 		printf("%s%d object%s found",
9310 		    ncolored > 0 ? "; " : "",
9311 		    nfound, nfound == 1 ? "" : "s");
9312 	}
9313 	if (print_trees) {
9314 		printf("; %d tree%s scanned", ntrees,
9315 		    ntrees == 1 ? "" : "s");
9316 	}
9317 }
9318 
9319 struct got_send_progress_arg {
9320 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
9321 	int verbosity;
9322 	int last_ncolored;
9323 	int last_nfound;
9324 	int last_ntrees;
9325 	int loading_done;
9326 	int last_ncommits;
9327 	int last_nobj_total;
9328 	int last_p_deltify;
9329 	int last_p_written;
9330 	int last_p_sent;
9331 	int printed_something;
9332 	int sent_something;
9333 	struct got_pathlist_head *delete_branches;
9334 };
9335 
9336 static const struct got_error *
9337 send_progress(void *arg, int ncolored, int nfound, int ntrees,
9338     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
9339     int nobj_written, off_t bytes_sent, const char *refname,
9340     const char *errmsg, int success)
9341 {
9342 	struct got_send_progress_arg *a = arg;
9343 	char scaled_packsize[FMT_SCALED_STRSIZE];
9344 	char scaled_sent[FMT_SCALED_STRSIZE];
9345 	int p_deltify = 0, p_written = 0, p_sent = 0;
9346 	int print_colored = 0, print_found = 0, print_trees = 0;
9347 	int print_searching = 0, print_total = 0;
9348 	int print_deltify = 0, print_written = 0, print_sent = 0;
9349 
9350 	if (a->verbosity < 0)
9351 		return NULL;
9352 
9353 	if (refname) {
9354 		const char *status = success ? "accepted" : "rejected";
9355 
9356 		if (success) {
9357 			struct got_pathlist_entry *pe;
9358 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
9359 				const char *branchname = pe->path;
9360 				if (got_path_cmp(branchname, refname,
9361 				    strlen(branchname), strlen(refname)) == 0) {
9362 					status = "deleted";
9363 					a->sent_something = 1;
9364 					break;
9365 				}
9366 			}
9367 		}
9368 
9369 		if (a->printed_something)
9370 			putchar('\n');
9371 		printf("Server has %s %s", status, refname);
9372 		if (errmsg)
9373 			printf(": %s", errmsg);
9374 		a->printed_something = 1;
9375 		return NULL;
9376 	}
9377 
9378 	if (a->last_ncolored != ncolored) {
9379 		print_colored = 1;
9380 		a->last_ncolored = ncolored;
9381 	}
9382 
9383 	if (a->last_nfound != nfound) {
9384 		print_colored = 1;
9385 		print_found = 1;
9386 		a->last_nfound = nfound;
9387 	}
9388 
9389 	if (a->last_ntrees != ntrees) {
9390 		print_colored = 1;
9391 		print_found = 1;
9392 		print_trees = 1;
9393 		a->last_ntrees = ntrees;
9394 	}
9395 
9396 	if ((print_colored || print_found || print_trees) &&
9397 	    !a->loading_done) {
9398 		printf("\r");
9399 		print_load_info(print_colored, print_found, print_trees,
9400 		    ncolored, nfound, ntrees);
9401 		a->printed_something = 1;
9402 		fflush(stdout);
9403 		return NULL;
9404 	} else if (!a->loading_done) {
9405 		printf("\r");
9406 		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
9407 		printf("\n");
9408 		a->loading_done = 1;
9409 	}
9410 
9411 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
9412 		return got_error_from_errno("fmt_scaled");
9413 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
9414 		return got_error_from_errno("fmt_scaled");
9415 
9416 	if (a->last_ncommits != ncommits) {
9417 		print_searching = 1;
9418 		a->last_ncommits = ncommits;
9419 	}
9420 
9421 	if (a->last_nobj_total != nobj_total) {
9422 		print_searching = 1;
9423 		print_total = 1;
9424 		a->last_nobj_total = nobj_total;
9425 	}
9426 
9427 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
9428 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
9429 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
9430 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
9431 			return got_error(GOT_ERR_NO_SPACE);
9432 	}
9433 
9434 	if (nobj_deltify > 0 || nobj_written > 0) {
9435 		if (nobj_deltify > 0) {
9436 			p_deltify = (nobj_deltify * 100) / nobj_total;
9437 			if (p_deltify != a->last_p_deltify) {
9438 				a->last_p_deltify = p_deltify;
9439 				print_searching = 1;
9440 				print_total = 1;
9441 				print_deltify = 1;
9442 			}
9443 		}
9444 		if (nobj_written > 0) {
9445 			p_written = (nobj_written * 100) / nobj_total;
9446 			if (p_written != a->last_p_written) {
9447 				a->last_p_written = p_written;
9448 				print_searching = 1;
9449 				print_total = 1;
9450 				print_deltify = 1;
9451 				print_written = 1;
9452 			}
9453 		}
9454 	}
9455 
9456 	if (bytes_sent > 0) {
9457 		p_sent = (bytes_sent * 100) / packfile_size;
9458 		if (p_sent != a->last_p_sent) {
9459 			a->last_p_sent = p_sent;
9460 			print_searching = 1;
9461 			print_total = 1;
9462 			print_deltify = 1;
9463 			print_written = 1;
9464 			print_sent = 1;
9465 		}
9466 		a->sent_something = 1;
9467 	}
9468 
9469 	if (print_searching || print_total || print_deltify || print_written ||
9470 	    print_sent)
9471 		printf("\r");
9472 	if (print_searching)
9473 		printf("packing %d reference%s", ncommits,
9474 		    ncommits == 1 ? "" : "s");
9475 	if (print_total)
9476 		printf("; %d object%s", nobj_total,
9477 		    nobj_total == 1 ? "" : "s");
9478 	if (print_deltify)
9479 		printf("; deltify: %d%%", p_deltify);
9480 	if (print_sent)
9481 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9482 		    scaled_packsize, p_sent);
9483 	else if (print_written)
9484 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9485 		    scaled_packsize, p_written);
9486 	if (print_searching || print_total || print_deltify ||
9487 	    print_written || print_sent) {
9488 		a->printed_something = 1;
9489 		fflush(stdout);
9490 	}
9491 	return NULL;
9492 }
9493 
9494 static const struct got_error *
9495 cmd_send(int argc, char *argv[])
9496 {
9497 	const struct got_error *error = NULL;
9498 	char *cwd = NULL, *repo_path = NULL;
9499 	const char *remote_name;
9500 	char *proto = NULL, *host = NULL, *port = NULL;
9501 	char *repo_name = NULL, *server_path = NULL;
9502 	const struct got_remote_repo *remotes, *remote = NULL;
9503 	int nremotes, nbranches = 0, ndelete_branches = 0;
9504 	struct got_repository *repo = NULL;
9505 	struct got_worktree *worktree = NULL;
9506 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
9507 	struct got_pathlist_head branches;
9508 	struct got_pathlist_head tags;
9509 	struct got_reflist_head all_branches;
9510 	struct got_reflist_head all_tags;
9511 	struct got_pathlist_head delete_args;
9512 	struct got_pathlist_head delete_branches;
9513 	struct got_reflist_entry *re;
9514 	struct got_pathlist_entry *pe;
9515 	int i, ch, sendfd = -1, sendstatus;
9516 	pid_t sendpid = -1;
9517 	struct got_send_progress_arg spa;
9518 	int verbosity = 0, overwrite_refs = 0;
9519 	int send_all_branches = 0, send_all_tags = 0;
9520 	struct got_reference *ref = NULL;
9521 	int *pack_fds = NULL;
9522 
9523 	TAILQ_INIT(&branches);
9524 	TAILQ_INIT(&tags);
9525 	TAILQ_INIT(&all_branches);
9526 	TAILQ_INIT(&all_tags);
9527 	TAILQ_INIT(&delete_args);
9528 	TAILQ_INIT(&delete_branches);
9529 
9530 	while ((ch = getopt(argc, argv, "ab:d:fqr:Tt:v")) != -1) {
9531 		switch (ch) {
9532 		case 'a':
9533 			send_all_branches = 1;
9534 			break;
9535 		case 'b':
9536 			error = got_pathlist_append(&branches, optarg, NULL);
9537 			if (error)
9538 				return error;
9539 			nbranches++;
9540 			break;
9541 		case 'd':
9542 			error = got_pathlist_append(&delete_args, optarg, NULL);
9543 			if (error)
9544 				return error;
9545 			break;
9546 		case 'f':
9547 			overwrite_refs = 1;
9548 			break;
9549 		case 'q':
9550 			verbosity = -1;
9551 			break;
9552 		case 'r':
9553 			repo_path = realpath(optarg, NULL);
9554 			if (repo_path == NULL)
9555 				return got_error_from_errno2("realpath",
9556 				    optarg);
9557 			got_path_strip_trailing_slashes(repo_path);
9558 			break;
9559 		case 'T':
9560 			send_all_tags = 1;
9561 			break;
9562 		case 't':
9563 			error = got_pathlist_append(&tags, optarg, NULL);
9564 			if (error)
9565 				return error;
9566 			break;
9567 		case 'v':
9568 			if (verbosity < 0)
9569 				verbosity = 0;
9570 			else if (verbosity < 3)
9571 				verbosity++;
9572 			break;
9573 		default:
9574 			usage_send();
9575 			/* NOTREACHED */
9576 		}
9577 	}
9578 	argc -= optind;
9579 	argv += optind;
9580 
9581 	if (send_all_branches && !TAILQ_EMPTY(&branches))
9582 		option_conflict('a', 'b');
9583 	if (send_all_tags && !TAILQ_EMPTY(&tags))
9584 		option_conflict('T', 't');
9585 
9586 
9587 	if (argc == 0)
9588 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
9589 	else if (argc == 1)
9590 		remote_name = argv[0];
9591 	else
9592 		usage_send();
9593 
9594 	cwd = getcwd(NULL, 0);
9595 	if (cwd == NULL) {
9596 		error = got_error_from_errno("getcwd");
9597 		goto done;
9598 	}
9599 
9600 	error = got_repo_pack_fds_open(&pack_fds);
9601 	if (error != NULL)
9602 		goto done;
9603 
9604 	if (repo_path == NULL) {
9605 		error = got_worktree_open(&worktree, cwd);
9606 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
9607 			goto done;
9608 		else
9609 			error = NULL;
9610 		if (worktree) {
9611 			repo_path =
9612 			    strdup(got_worktree_get_repo_path(worktree));
9613 			if (repo_path == NULL)
9614 				error = got_error_from_errno("strdup");
9615 			if (error)
9616 				goto done;
9617 		} else {
9618 			repo_path = strdup(cwd);
9619 			if (repo_path == NULL) {
9620 				error = got_error_from_errno("strdup");
9621 				goto done;
9622 			}
9623 		}
9624 	}
9625 
9626 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
9627 	if (error)
9628 		goto done;
9629 
9630 	if (worktree) {
9631 		worktree_conf = got_worktree_get_gotconfig(worktree);
9632 		if (worktree_conf) {
9633 			got_gotconfig_get_remotes(&nremotes, &remotes,
9634 			    worktree_conf);
9635 			for (i = 0; i < nremotes; i++) {
9636 				if (strcmp(remotes[i].name, remote_name) == 0) {
9637 					remote = &remotes[i];
9638 					break;
9639 				}
9640 			}
9641 		}
9642 	}
9643 	if (remote == NULL) {
9644 		repo_conf = got_repo_get_gotconfig(repo);
9645 		if (repo_conf) {
9646 			got_gotconfig_get_remotes(&nremotes, &remotes,
9647 			    repo_conf);
9648 			for (i = 0; i < nremotes; i++) {
9649 				if (strcmp(remotes[i].name, remote_name) == 0) {
9650 					remote = &remotes[i];
9651 					break;
9652 				}
9653 			}
9654 		}
9655 	}
9656 	if (remote == NULL) {
9657 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
9658 		for (i = 0; i < nremotes; i++) {
9659 			if (strcmp(remotes[i].name, remote_name) == 0) {
9660 				remote = &remotes[i];
9661 				break;
9662 			}
9663 		}
9664 	}
9665 	if (remote == NULL) {
9666 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
9667 		goto done;
9668 	}
9669 
9670 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
9671 	    &repo_name, remote->send_url);
9672 	if (error)
9673 		goto done;
9674 
9675 	if (strcmp(proto, "git") == 0) {
9676 #ifndef PROFILE
9677 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9678 		    "sendfd dns inet unveil", NULL) == -1)
9679 			err(1, "pledge");
9680 #endif
9681 	} else if (strcmp(proto, "git+ssh") == 0 ||
9682 	    strcmp(proto, "ssh") == 0) {
9683 #ifndef PROFILE
9684 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9685 		    "sendfd unveil", NULL) == -1)
9686 			err(1, "pledge");
9687 #endif
9688 	} else if (strcmp(proto, "http") == 0 ||
9689 	    strcmp(proto, "git+http") == 0) {
9690 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
9691 		goto done;
9692 	} else {
9693 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
9694 		goto done;
9695 	}
9696 
9697 	error = got_dial_apply_unveil(proto);
9698 	if (error)
9699 		goto done;
9700 
9701 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
9702 	if (error)
9703 		goto done;
9704 
9705 	if (send_all_branches) {
9706 		error = got_ref_list(&all_branches, repo, "refs/heads",
9707 		    got_ref_cmp_by_name, NULL);
9708 		if (error)
9709 			goto done;
9710 		TAILQ_FOREACH(re, &all_branches, entry) {
9711 			const char *branchname = got_ref_get_name(re->ref);
9712 			error = got_pathlist_append(&branches,
9713 			    branchname, NULL);
9714 			if (error)
9715 				goto done;
9716 			nbranches++;
9717 		}
9718 	} else if (nbranches == 0) {
9719 		for (i = 0; i < remote->nsend_branches; i++) {
9720 			error = got_pathlist_append(&branches,
9721 			    remote->send_branches[i], NULL);
9722 			if (error)
9723 				goto done;
9724 		}
9725 	}
9726 
9727 	if (send_all_tags) {
9728 		error = got_ref_list(&all_tags, repo, "refs/tags",
9729 		    got_ref_cmp_by_name, NULL);
9730 		if (error)
9731 			goto done;
9732 		TAILQ_FOREACH(re, &all_tags, entry) {
9733 			const char *tagname = got_ref_get_name(re->ref);
9734 			error = got_pathlist_append(&tags,
9735 			    tagname, NULL);
9736 			if (error)
9737 				goto done;
9738 		}
9739 	}
9740 
9741 	/*
9742 	 * To prevent accidents only branches in refs/heads/ can be deleted
9743 	 * with 'got send -d'.
9744 	 * Deleting anything else requires local repository access or Git.
9745 	 */
9746 	TAILQ_FOREACH(pe, &delete_args, entry) {
9747 		const char *branchname = pe->path;
9748 		char *s;
9749 		struct got_pathlist_entry *new;
9750 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
9751 			s = strdup(branchname);
9752 			if (s == NULL) {
9753 				error = got_error_from_errno("strdup");
9754 				goto done;
9755 			}
9756 		} else {
9757 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
9758 				error = got_error_from_errno("asprintf");
9759 				goto done;
9760 			}
9761 		}
9762 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
9763 		if (error || new == NULL /* duplicate */)
9764 			free(s);
9765 		if (error)
9766 			goto done;
9767 		ndelete_branches++;
9768 	}
9769 
9770 	if (nbranches == 0 && ndelete_branches == 0) {
9771 		struct got_reference *head_ref;
9772 		if (worktree)
9773 			error = got_ref_open(&head_ref, repo,
9774 			    got_worktree_get_head_ref_name(worktree), 0);
9775 		else
9776 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
9777 		if (error)
9778 			goto done;
9779 		if (got_ref_is_symbolic(head_ref)) {
9780 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
9781 			got_ref_close(head_ref);
9782 			if (error)
9783 				goto done;
9784 		} else
9785 			ref = head_ref;
9786 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
9787 		    NULL);
9788 		if (error)
9789 			goto done;
9790 		nbranches++;
9791 	}
9792 
9793 	if (verbosity >= 0) {
9794 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
9795 		    remote->name, proto, host,
9796 		    port ? ":" : "", port ? port : "",
9797 		    *server_path == '/' ? "" : "/", server_path);
9798 	}
9799 
9800 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
9801 	    server_path, verbosity);
9802 	if (error)
9803 		goto done;
9804 
9805 	memset(&spa, 0, sizeof(spa));
9806 	spa.last_scaled_packsize[0] = '\0';
9807 	spa.last_p_deltify = -1;
9808 	spa.last_p_written = -1;
9809 	spa.verbosity = verbosity;
9810 	spa.delete_branches = &delete_branches;
9811 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
9812 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
9813 	    check_cancelled, NULL);
9814 	if (spa.printed_something)
9815 		putchar('\n');
9816 	if (error)
9817 		goto done;
9818 	if (!spa.sent_something && verbosity >= 0)
9819 		printf("Already up-to-date\n");
9820 done:
9821 	if (sendpid > 0) {
9822 		if (kill(sendpid, SIGTERM) == -1)
9823 			error = got_error_from_errno("kill");
9824 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
9825 			error = got_error_from_errno("waitpid");
9826 	}
9827 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
9828 		error = got_error_from_errno("close");
9829 	if (repo) {
9830 		const struct got_error *close_err = got_repo_close(repo);
9831 		if (error == NULL)
9832 			error = close_err;
9833 	}
9834 	if (worktree)
9835 		got_worktree_close(worktree);
9836 	if (pack_fds) {
9837 		const struct got_error *pack_err =
9838 		    got_repo_pack_fds_close(pack_fds);
9839 		if (error == NULL)
9840 			error = pack_err;
9841 	}
9842 	if (ref)
9843 		got_ref_close(ref);
9844 	got_pathlist_free(&branches, GOT_PATHLIST_FREE_NONE);
9845 	got_pathlist_free(&tags, GOT_PATHLIST_FREE_NONE);
9846 	got_ref_list_free(&all_branches);
9847 	got_ref_list_free(&all_tags);
9848 	got_pathlist_free(&delete_args, GOT_PATHLIST_FREE_NONE);
9849 	got_pathlist_free(&delete_branches, GOT_PATHLIST_FREE_PATH);
9850 	free(cwd);
9851 	free(repo_path);
9852 	free(proto);
9853 	free(host);
9854 	free(port);
9855 	free(server_path);
9856 	free(repo_name);
9857 	return error;
9858 }
9859 
9860 /*
9861  * Print and if delete is set delete all ref_prefix references.
9862  * If wanted_ref is not NULL, only print or delete this reference.
9863  */
9864 static const struct got_error *
9865 process_logmsg_refs(const char *ref_prefix, size_t prefix_len,
9866     const char *wanted_ref, int delete, struct got_worktree *worktree,
9867     struct got_repository *repo)
9868 {
9869 	const struct got_error			*err;
9870 	struct got_pathlist_head		 paths;
9871 	struct got_reflist_head			 refs;
9872 	struct got_reflist_entry		*re;
9873 	struct got_reflist_object_id_map	*refs_idmap = NULL;
9874 	struct got_commit_object		*commit = NULL;
9875 	struct got_object_id			*id = NULL;
9876 	const char				*header_prefix;
9877 	char					*uuidstr = NULL;
9878 	int					 found = 0;
9879 
9880 	TAILQ_INIT(&refs);
9881 	TAILQ_INIT(&paths);
9882 
9883 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, repo);
9884 	if (err)
9885 		goto done;
9886 
9887 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
9888 	if (err)
9889 		goto done;
9890 
9891 	if (worktree != NULL) {
9892 		err = got_worktree_get_uuid(&uuidstr, worktree);
9893 		if (err)
9894 			goto done;
9895 	}
9896 
9897 	if (wanted_ref) {
9898 		if (strncmp(wanted_ref, "refs/heads/", 11) == 0)
9899 			wanted_ref += 11;
9900 	}
9901 
9902 	if (strcmp(ref_prefix, GOT_WORKTREE_BACKOUT_REF_PREFIX) == 0)
9903 		header_prefix = "backout";
9904 	else
9905 		header_prefix = "cherrypick";
9906 
9907 	TAILQ_FOREACH(re, &refs, entry) {
9908 		const char *refname, *wt;
9909 
9910 		refname = got_ref_get_name(re->ref);
9911 
9912 		err = check_cancelled(NULL);
9913 		if (err)
9914 			goto done;
9915 
9916 		if (strncmp(refname, ref_prefix, prefix_len) == 0)
9917 			refname += prefix_len + 1;  /* skip '-' delimiter */
9918 		else
9919 			continue;
9920 
9921 		wt = refname;
9922 
9923 		if (worktree == NULL || strncmp(refname, uuidstr,
9924 		    GOT_WORKTREE_UUID_STRLEN) == 0)
9925 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
9926 		else
9927 			continue;
9928 
9929 		err = got_repo_match_object_id(&id, NULL, refname,
9930 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9931 		if (err)
9932 			goto done;
9933 
9934 		err = got_object_open_as_commit(&commit, repo, id);
9935 		if (err)
9936 			goto done;
9937 
9938 		if (wanted_ref)
9939 			found = strncmp(wanted_ref, refname,
9940 			    strlen(wanted_ref)) == 0;
9941 		if (wanted_ref && !found) {
9942 			struct got_reflist_head	*ci_refs;
9943 
9944 			ci_refs = got_reflist_object_id_map_lookup(refs_idmap,
9945 			    id);
9946 
9947 			if (ci_refs) {
9948 				char		*refs_str = NULL;
9949 				char const	*r = NULL;
9950 
9951 				err = build_refs_str(&refs_str, ci_refs, id,
9952 				    repo, 1);
9953 				if (err)
9954 					goto done;
9955 
9956 				r = refs_str;
9957 				while (r) {
9958 					if (strncmp(r, wanted_ref,
9959 					    strlen(wanted_ref)) == 0) {
9960 						found = 1;
9961 						break;
9962 					}
9963 					r = strchr(r, ' ');
9964 					if (r)
9965 						++r;
9966 				}
9967 				free(refs_str);
9968 			}
9969 		}
9970 
9971 		if (wanted_ref == NULL || found) {
9972 			if (delete) {
9973 				err = got_ref_delete(re->ref, repo);
9974 				if (err)
9975 					goto done;
9976 				printf("Deleted: ");
9977 				err = print_commit_oneline(commit, id, repo,
9978 				    refs_idmap);
9979 			} else {
9980 				/*
9981 				 * Print paths modified by commit to help
9982 				 * associate commits with worktree changes.
9983 				 */
9984 				err = get_changed_paths(&paths, commit,
9985 				    repo, NULL);
9986 				if (err)
9987 					goto done;
9988 
9989 				err = print_commit(commit, id, repo, NULL,
9990 				    &paths, NULL, 0, 0, refs_idmap, NULL,
9991 				    header_prefix);
9992 				got_pathlist_free(&paths,
9993 				    GOT_PATHLIST_FREE_ALL);
9994 
9995 				if (worktree == NULL)
9996 					printf("work tree: %.*s\n\n",
9997 					    GOT_WORKTREE_UUID_STRLEN, wt);
9998 			}
9999 			if (err || found)
10000 				goto done;
10001 		}
10002 
10003 		got_object_commit_close(commit);
10004 		commit = NULL;
10005 		free(id);
10006 		id = NULL;
10007 	}
10008 
10009 	if (wanted_ref != NULL && !found)
10010 		err = got_error_fmt(GOT_ERR_NOT_REF, "%s", wanted_ref);
10011 
10012 done:
10013 	free(id);
10014 	free(uuidstr);
10015 	got_ref_list_free(&refs);
10016 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
10017 	if (refs_idmap)
10018 		got_reflist_object_id_map_free(refs_idmap);
10019 	if (commit)
10020 		got_object_commit_close(commit);
10021 	return err;
10022 }
10023 
10024 /*
10025  * Create new temp "logmsg" ref of the backed-out or cherrypicked commit
10026  * identified by id for log messages to prepopulate the editor on commit.
10027  */
10028 static const struct got_error *
10029 logmsg_ref(struct got_object_id *id, const char *prefix,
10030     struct got_worktree *worktree, struct got_repository *repo)
10031 {
10032 	const struct got_error	*err = NULL;
10033 	char			*idstr, *ref = NULL, *refname = NULL;
10034 	int			 histedit_in_progress;
10035 	int			 rebase_in_progress, merge_in_progress;
10036 
10037 	/*
10038 	 * Silenty refuse to create merge reference if any histedit, merge,
10039 	 * or rebase operation is in progress.
10040 	 */
10041 	err = got_worktree_histedit_in_progress(&histedit_in_progress,
10042 	    worktree);
10043 	if (err)
10044 		return err;
10045 	if (histedit_in_progress)
10046 		return NULL;
10047 
10048 	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10049 	if (err)
10050 		return err;
10051 	if (rebase_in_progress)
10052 		return NULL;
10053 
10054 	err = got_worktree_merge_in_progress(&merge_in_progress, worktree,
10055 	    repo);
10056 	if (err)
10057 		return err;
10058 	if (merge_in_progress)
10059 		return NULL;
10060 
10061 	err = got_object_id_str(&idstr, id);
10062 	if (err)
10063 		return err;
10064 
10065 	err = got_worktree_get_logmsg_ref_name(&refname, worktree, prefix);
10066 	if (err)
10067 		goto done;
10068 
10069 	if (asprintf(&ref, "%s-%s", refname, idstr) == -1) {
10070 		err = got_error_from_errno("asprintf");
10071 		goto done;
10072 	}
10073 
10074 	err = create_ref(ref, got_worktree_get_base_commit_id(worktree),
10075 	    -1, repo);
10076 done:
10077 	free(ref);
10078 	free(idstr);
10079 	free(refname);
10080 	return err;
10081 }
10082 
10083 __dead static void
10084 usage_cherrypick(void)
10085 {
10086 	fprintf(stderr, "usage: %s cherrypick [-lX] [commit-id]\n",
10087 	    getprogname());
10088 	exit(1);
10089 }
10090 
10091 static const struct got_error *
10092 cmd_cherrypick(int argc, char *argv[])
10093 {
10094 	const struct got_error *error = NULL;
10095 	struct got_worktree *worktree = NULL;
10096 	struct got_repository *repo = NULL;
10097 	char *cwd = NULL, *commit_id_str = NULL;
10098 	struct got_object_id *commit_id = NULL;
10099 	struct got_commit_object *commit = NULL;
10100 	struct got_object_qid *pid;
10101 	int ch, list_refs = 0, remove_refs = 0;
10102 	struct got_update_progress_arg upa;
10103 	int *pack_fds = NULL;
10104 
10105 #ifndef PROFILE
10106 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10107 	    "unveil", NULL) == -1)
10108 		err(1, "pledge");
10109 #endif
10110 
10111 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10112 		switch (ch) {
10113 		case 'l':
10114 			list_refs = 1;
10115 			break;
10116 		case 'X':
10117 			remove_refs = 1;
10118 			break;
10119 		default:
10120 			usage_cherrypick();
10121 			/* NOTREACHED */
10122 		}
10123 	}
10124 
10125 	argc -= optind;
10126 	argv += optind;
10127 
10128 	if (list_refs || remove_refs) {
10129 		if (argc != 0 && argc != 1)
10130 			usage_cherrypick();
10131 	} else if (argc != 1)
10132 		usage_cherrypick();
10133 	if (list_refs && remove_refs)
10134 		option_conflict('l', 'X');
10135 
10136 	cwd = getcwd(NULL, 0);
10137 	if (cwd == NULL) {
10138 		error = got_error_from_errno("getcwd");
10139 		goto done;
10140 	}
10141 
10142 	error = got_repo_pack_fds_open(&pack_fds);
10143 	if (error != NULL)
10144 		goto done;
10145 
10146 	error = got_worktree_open(&worktree, cwd);
10147 	if (error) {
10148 		if (list_refs || remove_refs) {
10149 			if (error->code != GOT_ERR_NOT_WORKTREE)
10150 				goto done;
10151 		} else {
10152 			if (error->code == GOT_ERR_NOT_WORKTREE)
10153 				error = wrap_not_worktree_error(error,
10154 				    "cherrypick", cwd);
10155 			goto done;
10156 		}
10157 	}
10158 
10159 	error = got_repo_open(&repo,
10160 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10161 	    NULL, pack_fds);
10162 	if (error != NULL)
10163 		goto done;
10164 
10165 	error = apply_unveil(got_repo_get_path(repo), 0,
10166 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10167 	if (error)
10168 		goto done;
10169 
10170 	if (list_refs || remove_refs) {
10171 		error = process_logmsg_refs(GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
10172 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN,
10173 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10174 		goto done;
10175 	}
10176 
10177 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
10178 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10179 	if (error)
10180 		goto done;
10181 	error = got_object_id_str(&commit_id_str, commit_id);
10182 	if (error)
10183 		goto done;
10184 
10185 	error = got_object_open_as_commit(&commit, repo, commit_id);
10186 	if (error)
10187 		goto done;
10188 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10189 	memset(&upa, 0, sizeof(upa));
10190 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
10191 	    commit_id, repo, update_progress, &upa, check_cancelled,
10192 	    NULL);
10193 	if (error != NULL)
10194 		goto done;
10195 
10196 	if (upa.did_something) {
10197 		error = logmsg_ref(commit_id,
10198 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX, worktree, repo);
10199 		if (error)
10200 			goto done;
10201 		printf("Merged commit %s\n", commit_id_str);
10202 	}
10203 	print_merge_progress_stats(&upa);
10204 done:
10205 	free(cwd);
10206 	if (commit)
10207 		got_object_commit_close(commit);
10208 	free(commit_id_str);
10209 	if (worktree)
10210 		got_worktree_close(worktree);
10211 	if (repo) {
10212 		const struct got_error *close_err = got_repo_close(repo);
10213 		if (error == NULL)
10214 			error = close_err;
10215 	}
10216 	if (pack_fds) {
10217 		const struct got_error *pack_err =
10218 		    got_repo_pack_fds_close(pack_fds);
10219 		if (error == NULL)
10220 			error = pack_err;
10221 	}
10222 
10223 	return error;
10224 }
10225 
10226 __dead static void
10227 usage_backout(void)
10228 {
10229 	fprintf(stderr, "usage: %s backout [-lX] [commit-id]\n", getprogname());
10230 	exit(1);
10231 }
10232 
10233 static const struct got_error *
10234 cmd_backout(int argc, char *argv[])
10235 {
10236 	const struct got_error *error = NULL;
10237 	struct got_worktree *worktree = NULL;
10238 	struct got_repository *repo = NULL;
10239 	char *cwd = NULL, *commit_id_str = NULL;
10240 	struct got_object_id *commit_id = NULL;
10241 	struct got_commit_object *commit = NULL;
10242 	struct got_object_qid *pid;
10243 	int ch, list_refs = 0, remove_refs = 0;
10244 	struct got_update_progress_arg upa;
10245 	int *pack_fds = NULL;
10246 
10247 #ifndef PROFILE
10248 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10249 	    "unveil", NULL) == -1)
10250 		err(1, "pledge");
10251 #endif
10252 
10253 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10254 		switch (ch) {
10255 		case 'l':
10256 			list_refs = 1;
10257 			break;
10258 		case 'X':
10259 			remove_refs = 1;
10260 			break;
10261 		default:
10262 			usage_backout();
10263 			/* NOTREACHED */
10264 		}
10265 	}
10266 
10267 	argc -= optind;
10268 	argv += optind;
10269 
10270 	if (list_refs || remove_refs) {
10271 		if (argc != 0 && argc != 1)
10272 			usage_backout();
10273 	} else if (argc != 1)
10274 		usage_backout();
10275 	if (list_refs && remove_refs)
10276 		option_conflict('l', 'X');
10277 
10278 	cwd = getcwd(NULL, 0);
10279 	if (cwd == NULL) {
10280 		error = got_error_from_errno("getcwd");
10281 		goto done;
10282 	}
10283 
10284 	error = got_repo_pack_fds_open(&pack_fds);
10285 	if (error != NULL)
10286 		goto done;
10287 
10288 	error = got_worktree_open(&worktree, cwd);
10289 	if (error) {
10290 		if (list_refs || remove_refs) {
10291 			if (error->code != GOT_ERR_NOT_WORKTREE)
10292 				goto done;
10293 		} else {
10294 			if (error->code == GOT_ERR_NOT_WORKTREE)
10295 				error = wrap_not_worktree_error(error,
10296 				    "backout", cwd);
10297 			goto done;
10298 		}
10299 	}
10300 
10301 	error = got_repo_open(&repo,
10302 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10303 	    NULL, pack_fds);
10304 	if (error != NULL)
10305 		goto done;
10306 
10307 	error = apply_unveil(got_repo_get_path(repo), 0,
10308 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10309 	if (error)
10310 		goto done;
10311 
10312 	if (list_refs || remove_refs) {
10313 		error = process_logmsg_refs(GOT_WORKTREE_BACKOUT_REF_PREFIX,
10314 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN,
10315 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10316 		goto done;
10317 	}
10318 
10319 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
10320 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10321 	if (error)
10322 		goto done;
10323 	error = got_object_id_str(&commit_id_str, commit_id);
10324 	if (error)
10325 		goto done;
10326 
10327 	error = got_object_open_as_commit(&commit, repo, commit_id);
10328 	if (error)
10329 		goto done;
10330 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10331 	if (pid == NULL) {
10332 		error = got_error(GOT_ERR_ROOT_COMMIT);
10333 		goto done;
10334 	}
10335 
10336 	memset(&upa, 0, sizeof(upa));
10337 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
10338 	    repo, update_progress, &upa, check_cancelled, NULL);
10339 	if (error != NULL)
10340 		goto done;
10341 
10342 	if (upa.did_something) {
10343 		error = logmsg_ref(commit_id, GOT_WORKTREE_BACKOUT_REF_PREFIX,
10344 		    worktree, repo);
10345 		if (error)
10346 			goto done;
10347 		printf("Backed out commit %s\n", commit_id_str);
10348 	}
10349 	print_merge_progress_stats(&upa);
10350 done:
10351 	free(cwd);
10352 	if (commit)
10353 		got_object_commit_close(commit);
10354 	free(commit_id_str);
10355 	if (worktree)
10356 		got_worktree_close(worktree);
10357 	if (repo) {
10358 		const struct got_error *close_err = got_repo_close(repo);
10359 		if (error == NULL)
10360 			error = close_err;
10361 	}
10362 	if (pack_fds) {
10363 		const struct got_error *pack_err =
10364 		    got_repo_pack_fds_close(pack_fds);
10365 		if (error == NULL)
10366 			error = pack_err;
10367 	}
10368 	return error;
10369 }
10370 
10371 __dead static void
10372 usage_rebase(void)
10373 {
10374 	fprintf(stderr, "usage: %s rebase [-aCclX] [branch]\n", getprogname());
10375 	exit(1);
10376 }
10377 
10378 static void
10379 trim_logmsg(char *logmsg, int limit)
10380 {
10381 	char *nl;
10382 	size_t len;
10383 
10384 	len = strlen(logmsg);
10385 	if (len > limit)
10386 		len = limit;
10387 	logmsg[len] = '\0';
10388 	nl = strchr(logmsg, '\n');
10389 	if (nl)
10390 		*nl = '\0';
10391 }
10392 
10393 static const struct got_error *
10394 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
10395 {
10396 	const struct got_error *err;
10397 	char *logmsg0 = NULL;
10398 	const char *s;
10399 
10400 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10401 	if (err)
10402 		return err;
10403 
10404 	s = logmsg0;
10405 	while (isspace((unsigned char)s[0]))
10406 		s++;
10407 
10408 	*logmsg = strdup(s);
10409 	if (*logmsg == NULL) {
10410 		err = got_error_from_errno("strdup");
10411 		goto done;
10412 	}
10413 
10414 	trim_logmsg(*logmsg, limit);
10415 done:
10416 	free(logmsg0);
10417 	return err;
10418 }
10419 
10420 static const struct got_error *
10421 show_rebase_merge_conflict(struct got_object_id *id,
10422     struct got_repository *repo)
10423 {
10424 	const struct got_error *err;
10425 	struct got_commit_object *commit = NULL;
10426 	char *id_str = NULL, *logmsg = NULL;
10427 
10428 	err = got_object_open_as_commit(&commit, repo, id);
10429 	if (err)
10430 		return err;
10431 
10432 	err = got_object_id_str(&id_str, id);
10433 	if (err)
10434 		goto done;
10435 
10436 	id_str[12] = '\0';
10437 
10438 	err = get_short_logmsg(&logmsg, 42, commit);
10439 	if (err)
10440 		goto done;
10441 
10442 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
10443 done:
10444 	free(id_str);
10445 	got_object_commit_close(commit);
10446 	free(logmsg);
10447 	return err;
10448 }
10449 
10450 static const struct got_error *
10451 show_rebase_progress(struct got_commit_object *commit,
10452     struct got_object_id *old_id, struct got_object_id *new_id)
10453 {
10454 	const struct got_error *err;
10455 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
10456 
10457 	err = got_object_id_str(&old_id_str, old_id);
10458 	if (err)
10459 		goto done;
10460 
10461 	if (new_id) {
10462 		err = got_object_id_str(&new_id_str, new_id);
10463 		if (err)
10464 			goto done;
10465 	}
10466 
10467 	old_id_str[12] = '\0';
10468 	if (new_id_str)
10469 		new_id_str[12] = '\0';
10470 
10471 	err = get_short_logmsg(&logmsg, 42, commit);
10472 	if (err)
10473 		goto done;
10474 
10475 	printf("%s -> %s: %s\n", old_id_str,
10476 	    new_id_str ? new_id_str : "no-op change", logmsg);
10477 done:
10478 	free(old_id_str);
10479 	free(new_id_str);
10480 	free(logmsg);
10481 	return err;
10482 }
10483 
10484 static const struct got_error *
10485 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
10486     struct got_reference *branch, struct got_reference *tmp_branch,
10487     struct got_repository *repo, int create_backup)
10488 {
10489 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
10490 	return got_worktree_rebase_complete(worktree, fileindex,
10491 	    tmp_branch, branch, repo, create_backup);
10492 }
10493 
10494 static const struct got_error *
10495 rebase_commit(struct got_pathlist_head *merged_paths,
10496     struct got_worktree *worktree, struct got_fileindex *fileindex,
10497     struct got_reference *tmp_branch, const char *committer,
10498     struct got_object_id *commit_id, int allow_conflict,
10499     struct got_repository *repo)
10500 {
10501 	const struct got_error *error;
10502 	struct got_commit_object *commit;
10503 	struct got_object_id *new_commit_id;
10504 
10505 	error = got_object_open_as_commit(&commit, repo, commit_id);
10506 	if (error)
10507 		return error;
10508 
10509 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
10510 	    worktree, fileindex, tmp_branch, committer, commit, commit_id,
10511 	    allow_conflict, repo);
10512 	if (error) {
10513 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
10514 			goto done;
10515 		error = show_rebase_progress(commit, commit_id, NULL);
10516 	} else {
10517 		error = show_rebase_progress(commit, commit_id, new_commit_id);
10518 		free(new_commit_id);
10519 	}
10520 done:
10521 	got_object_commit_close(commit);
10522 	return error;
10523 }
10524 
10525 struct check_path_prefix_arg {
10526 	const char *path_prefix;
10527 	size_t len;
10528 	int errcode;
10529 };
10530 
10531 static const struct got_error *
10532 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
10533     struct got_blob_object *blob2, FILE *f1, FILE *f2,
10534     struct got_object_id *id1, struct got_object_id *id2,
10535     const char *path1, const char *path2,
10536     mode_t mode1, mode_t mode2, struct got_repository *repo)
10537 {
10538 	struct check_path_prefix_arg *a = arg;
10539 
10540 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
10541 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
10542 		return got_error(a->errcode);
10543 
10544 	return NULL;
10545 }
10546 
10547 static const struct got_error *
10548 check_path_prefix(struct got_object_id *parent_id,
10549     struct got_object_id *commit_id, const char *path_prefix,
10550     int errcode, struct got_repository *repo)
10551 {
10552 	const struct got_error *err;
10553 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
10554 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
10555 	struct check_path_prefix_arg cpp_arg;
10556 
10557 	if (got_path_is_root_dir(path_prefix))
10558 		return NULL;
10559 
10560 	err = got_object_open_as_commit(&commit, repo, commit_id);
10561 	if (err)
10562 		goto done;
10563 
10564 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
10565 	if (err)
10566 		goto done;
10567 
10568 	err = got_object_open_as_tree(&tree1, repo,
10569 	    got_object_commit_get_tree_id(parent_commit));
10570 	if (err)
10571 		goto done;
10572 
10573 	err = got_object_open_as_tree(&tree2, repo,
10574 	    got_object_commit_get_tree_id(commit));
10575 	if (err)
10576 		goto done;
10577 
10578 	cpp_arg.path_prefix = path_prefix;
10579 	while (cpp_arg.path_prefix[0] == '/')
10580 		cpp_arg.path_prefix++;
10581 	cpp_arg.len = strlen(cpp_arg.path_prefix);
10582 	cpp_arg.errcode = errcode;
10583 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
10584 	    check_path_prefix_in_diff, &cpp_arg, 0);
10585 done:
10586 	if (tree1)
10587 		got_object_tree_close(tree1);
10588 	if (tree2)
10589 		got_object_tree_close(tree2);
10590 	if (commit)
10591 		got_object_commit_close(commit);
10592 	if (parent_commit)
10593 		got_object_commit_close(parent_commit);
10594 	return err;
10595 }
10596 
10597 static const struct got_error *
10598 collect_commits(struct got_object_id_queue *commits,
10599     struct got_object_id *initial_commit_id,
10600     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
10601     const char *path_prefix, int path_prefix_errcode,
10602     struct got_repository *repo)
10603 {
10604 	const struct got_error *err = NULL;
10605 	struct got_commit_graph *graph = NULL;
10606 	struct got_object_id parent_id, commit_id;
10607 	struct got_object_qid *qid;
10608 
10609 	err = got_commit_graph_open(&graph, "/", 1);
10610 	if (err)
10611 		return err;
10612 
10613 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
10614 	    check_cancelled, NULL);
10615 	if (err)
10616 		goto done;
10617 
10618 	memcpy(&commit_id, initial_commit_id, sizeof(commit_id));
10619 	while (got_object_id_cmp(&commit_id, iter_stop_id) != 0) {
10620 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
10621 		    check_cancelled, NULL);
10622 		if (err) {
10623 			if (err->code == GOT_ERR_ITER_COMPLETED) {
10624 				err = got_error_msg(GOT_ERR_ANCESTRY,
10625 				    "ran out of commits to rebase before "
10626 				    "youngest common ancestor commit has "
10627 				    "been reached?!?");
10628 			}
10629 			goto done;
10630 		} else {
10631 			err = check_path_prefix(&parent_id, &commit_id,
10632 			    path_prefix, path_prefix_errcode, repo);
10633 			if (err)
10634 				goto done;
10635 
10636 			err = got_object_qid_alloc(&qid, &commit_id);
10637 			if (err)
10638 				goto done;
10639 			STAILQ_INSERT_HEAD(commits, qid, entry);
10640 
10641 			memcpy(&commit_id, &parent_id, sizeof(commit_id));
10642 		}
10643 	}
10644 done:
10645 	got_commit_graph_close(graph);
10646 	return err;
10647 }
10648 
10649 static const struct got_error *
10650 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
10651 {
10652 	const struct got_error *err = NULL;
10653 	time_t committer_time;
10654 	struct tm tm;
10655 	char datebuf[11]; /* YYYY-MM-DD + NUL */
10656 	char *author0 = NULL, *author, *smallerthan;
10657 	char *logmsg0 = NULL, *logmsg, *newline;
10658 
10659 	committer_time = got_object_commit_get_committer_time(commit);
10660 	if (gmtime_r(&committer_time, &tm) == NULL)
10661 		return got_error_from_errno("gmtime_r");
10662 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
10663 		return got_error(GOT_ERR_NO_SPACE);
10664 
10665 	author0 = strdup(got_object_commit_get_author(commit));
10666 	if (author0 == NULL)
10667 		return got_error_from_errno("strdup");
10668 	author = author0;
10669 	smallerthan = strchr(author, '<');
10670 	if (smallerthan && smallerthan[1] != '\0')
10671 		author = smallerthan + 1;
10672 	author[strcspn(author, "@>")] = '\0';
10673 
10674 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10675 	if (err)
10676 		goto done;
10677 	logmsg = logmsg0;
10678 	while (*logmsg == '\n')
10679 		logmsg++;
10680 	newline = strchr(logmsg, '\n');
10681 	if (newline)
10682 		*newline = '\0';
10683 
10684 	if (asprintf(brief_str, "%s %s  %s",
10685 	    datebuf, author, logmsg) == -1)
10686 		err = got_error_from_errno("asprintf");
10687 done:
10688 	free(author0);
10689 	free(logmsg0);
10690 	return err;
10691 }
10692 
10693 static const struct got_error *
10694 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
10695     struct got_repository *repo)
10696 {
10697 	const struct got_error *err;
10698 	char *id_str;
10699 
10700 	err = got_object_id_str(&id_str, id);
10701 	if (err)
10702 		return err;
10703 
10704 	err = got_ref_delete(ref, repo);
10705 	if (err)
10706 		goto done;
10707 
10708 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
10709 done:
10710 	free(id_str);
10711 	return err;
10712 }
10713 
10714 static const struct got_error *
10715 print_backup_ref(const char *branch_name, const char *new_id_str,
10716     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
10717     struct got_reflist_object_id_map *refs_idmap,
10718     struct got_repository *repo)
10719 {
10720 	const struct got_error *err = NULL;
10721 	struct got_reflist_head *refs;
10722 	char *refs_str = NULL;
10723 	struct got_object_id *new_commit_id = NULL;
10724 	struct got_commit_object *new_commit = NULL;
10725 	char *new_commit_brief_str = NULL;
10726 	struct got_object_id *yca_id = NULL;
10727 	struct got_commit_object *yca_commit = NULL;
10728 	char *yca_id_str = NULL, *yca_brief_str = NULL;
10729 	char *custom_refs_str;
10730 
10731 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
10732 		return got_error_from_errno("asprintf");
10733 
10734 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL, NULL,
10735 	    0, 0, refs_idmap, custom_refs_str, NULL);
10736 	if (err)
10737 		goto done;
10738 
10739 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
10740 	if (err)
10741 		goto done;
10742 
10743 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
10744 	if (refs) {
10745 		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
10746 		if (err)
10747 			goto done;
10748 	}
10749 
10750 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
10751 	if (err)
10752 		goto done;
10753 
10754 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
10755 	if (err)
10756 		goto done;
10757 
10758 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
10759 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
10760 	if (err)
10761 		goto done;
10762 
10763 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
10764 	    refs_str ? " (" : "", refs_str ? refs_str : "",
10765 	    refs_str ? ")" : "", new_commit_brief_str);
10766 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
10767 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
10768 		free(refs_str);
10769 		refs_str = NULL;
10770 
10771 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
10772 		if (err)
10773 			goto done;
10774 
10775 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
10776 		if (err)
10777 			goto done;
10778 
10779 		err = got_object_id_str(&yca_id_str, yca_id);
10780 		if (err)
10781 			goto done;
10782 
10783 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
10784 		if (refs) {
10785 			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
10786 			if (err)
10787 				goto done;
10788 		}
10789 		printf("history forked at %s%s%s%s\n %s\n",
10790 		    yca_id_str,
10791 		    refs_str ? " (" : "", refs_str ? refs_str : "",
10792 		    refs_str ? ")" : "", yca_brief_str);
10793 	}
10794 done:
10795 	free(custom_refs_str);
10796 	free(new_commit_id);
10797 	free(refs_str);
10798 	free(yca_id);
10799 	free(yca_id_str);
10800 	free(yca_brief_str);
10801 	if (new_commit)
10802 		got_object_commit_close(new_commit);
10803 	if (yca_commit)
10804 		got_object_commit_close(yca_commit);
10805 
10806 	return err;
10807 }
10808 
10809 static const struct got_error *
10810 worktree_has_logmsg_ref(const char *caller, struct got_worktree *worktree,
10811     struct got_repository *repo)
10812 {
10813 	const struct got_error		*err;
10814 	struct got_reflist_head		 refs;
10815 	struct got_reflist_entry	*re;
10816 	char				*uuidstr = NULL;
10817 	static char			 msg[160];
10818 
10819 	TAILQ_INIT(&refs);
10820 
10821 	err = got_worktree_get_uuid(&uuidstr, worktree);
10822 	if (err)
10823 		goto done;
10824 
10825 	err = got_ref_list(&refs, repo, "refs/got/worktree",
10826 	    got_ref_cmp_by_name, repo);
10827 	if (err)
10828 		goto done;
10829 
10830 	TAILQ_FOREACH(re, &refs, entry) {
10831 		const char *cmd, *refname, *type;
10832 
10833 		refname = got_ref_get_name(re->ref);
10834 
10835 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
10836 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
10837 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
10838 			cmd = "cherrypick";
10839 			type = "cherrypicked";
10840 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
10841 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
10842 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
10843 			cmd = "backout";
10844 			type = "backed-out";
10845 		} else
10846 			continue;
10847 
10848 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) != 0)
10849 			continue;
10850 
10851 		snprintf(msg, sizeof(msg),
10852 		    "work tree has references created by %s commits which "
10853 		    "must be removed with 'got %s -X' before running the %s "
10854 		    "command", type, cmd, caller);
10855 		err = got_error_msg(GOT_ERR_WORKTREE_META, msg);
10856 		goto done;
10857 	}
10858 
10859 done:
10860 	free(uuidstr);
10861 	got_ref_list_free(&refs);
10862 	return err;
10863 }
10864 
10865 static const struct got_error *
10866 process_backup_refs(const char *backup_ref_prefix,
10867     const char *wanted_branch_name,
10868     int delete, struct got_repository *repo)
10869 {
10870 	const struct got_error *err;
10871 	struct got_reflist_head refs, backup_refs;
10872 	struct got_reflist_entry *re;
10873 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
10874 	struct got_object_id *old_commit_id = NULL;
10875 	char *branch_name = NULL;
10876 	struct got_commit_object *old_commit = NULL;
10877 	struct got_reflist_object_id_map *refs_idmap = NULL;
10878 	int wanted_branch_found = 0;
10879 
10880 	TAILQ_INIT(&refs);
10881 	TAILQ_INIT(&backup_refs);
10882 
10883 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
10884 	if (err)
10885 		return err;
10886 
10887 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
10888 	if (err)
10889 		goto done;
10890 
10891 	if (wanted_branch_name) {
10892 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
10893 			wanted_branch_name += 11;
10894 	}
10895 
10896 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
10897 	    got_ref_cmp_by_commit_timestamp_descending, repo);
10898 	if (err)
10899 		goto done;
10900 
10901 	TAILQ_FOREACH(re, &backup_refs, entry) {
10902 		const char *refname = got_ref_get_name(re->ref);
10903 		char *slash;
10904 
10905 		err = check_cancelled(NULL);
10906 		if (err)
10907 			break;
10908 
10909 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
10910 		if (err)
10911 			break;
10912 
10913 		err = got_object_open_as_commit(&old_commit, repo,
10914 		    old_commit_id);
10915 		if (err)
10916 			break;
10917 
10918 		if (strncmp(backup_ref_prefix, refname,
10919 		    backup_ref_prefix_len) == 0)
10920 			refname += backup_ref_prefix_len;
10921 
10922 		while (refname[0] == '/')
10923 			refname++;
10924 
10925 		branch_name = strdup(refname);
10926 		if (branch_name == NULL) {
10927 			err = got_error_from_errno("strdup");
10928 			break;
10929 		}
10930 		slash = strrchr(branch_name, '/');
10931 		if (slash) {
10932 			*slash = '\0';
10933 			refname += strlen(branch_name) + 1;
10934 		}
10935 
10936 		if (wanted_branch_name == NULL ||
10937 		    strcmp(wanted_branch_name, branch_name) == 0) {
10938 			wanted_branch_found = 1;
10939 			if (delete) {
10940 				err = delete_backup_ref(re->ref,
10941 				    old_commit_id, repo);
10942 			} else {
10943 				err = print_backup_ref(branch_name, refname,
10944 				    old_commit_id, old_commit, refs_idmap,
10945 				    repo);
10946 			}
10947 			if (err)
10948 				break;
10949 		}
10950 
10951 		free(old_commit_id);
10952 		old_commit_id = NULL;
10953 		free(branch_name);
10954 		branch_name = NULL;
10955 		got_object_commit_close(old_commit);
10956 		old_commit = NULL;
10957 	}
10958 
10959 	if (wanted_branch_name && !wanted_branch_found) {
10960 		err = got_error_fmt(GOT_ERR_NOT_REF,
10961 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
10962 	}
10963 done:
10964 	if (refs_idmap)
10965 		got_reflist_object_id_map_free(refs_idmap);
10966 	got_ref_list_free(&refs);
10967 	got_ref_list_free(&backup_refs);
10968 	free(old_commit_id);
10969 	free(branch_name);
10970 	if (old_commit)
10971 		got_object_commit_close(old_commit);
10972 	return err;
10973 }
10974 
10975 static const struct got_error *
10976 abort_progress(void *arg, unsigned char status, const char *path)
10977 {
10978 	/*
10979 	 * Unversioned files should not clutter progress output when
10980 	 * an operation is aborted.
10981 	 */
10982 	if (status == GOT_STATUS_UNVERSIONED)
10983 		return NULL;
10984 
10985 	return update_progress(arg, status, path);
10986 }
10987 
10988 static const struct got_error *
10989 cmd_rebase(int argc, char *argv[])
10990 {
10991 	const struct got_error *error = NULL;
10992 	struct got_worktree *worktree = NULL;
10993 	struct got_repository *repo = NULL;
10994 	struct got_fileindex *fileindex = NULL;
10995 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
10996 	struct got_reference *branch = NULL;
10997 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
10998 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
10999 	struct got_object_id *resume_commit_id = NULL;
11000 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
11001 	struct got_object_id *head_commit_id = NULL;
11002 	struct got_reference *head_ref = NULL;
11003 	struct got_commit_object *commit = NULL;
11004 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
11005 	int histedit_in_progress = 0, merge_in_progress = 0;
11006 	int create_backup = 1, list_backups = 0, delete_backups = 0;
11007 	int allow_conflict = 0;
11008 	struct got_object_id_queue commits;
11009 	struct got_pathlist_head merged_paths;
11010 	const struct got_object_id_queue *parent_ids;
11011 	struct got_object_qid *qid, *pid;
11012 	struct got_update_progress_arg upa;
11013 	int *pack_fds = NULL;
11014 
11015 	STAILQ_INIT(&commits);
11016 	TAILQ_INIT(&merged_paths);
11017 	memset(&upa, 0, sizeof(upa));
11018 
11019 #ifndef PROFILE
11020 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11021 	    "unveil", NULL) == -1)
11022 		err(1, "pledge");
11023 #endif
11024 
11025 	while ((ch = getopt(argc, argv, "aCclX")) != -1) {
11026 		switch (ch) {
11027 		case 'a':
11028 			abort_rebase = 1;
11029 			break;
11030 		case 'C':
11031 			allow_conflict = 1;
11032 			break;
11033 		case 'c':
11034 			continue_rebase = 1;
11035 			break;
11036 		case 'l':
11037 			list_backups = 1;
11038 			break;
11039 		case 'X':
11040 			delete_backups = 1;
11041 			break;
11042 		default:
11043 			usage_rebase();
11044 			/* NOTREACHED */
11045 		}
11046 	}
11047 
11048 	argc -= optind;
11049 	argv += optind;
11050 
11051 	if (list_backups) {
11052 		if (abort_rebase)
11053 			option_conflict('l', 'a');
11054 		if (allow_conflict)
11055 			option_conflict('l', 'C');
11056 		if (continue_rebase)
11057 			option_conflict('l', 'c');
11058 		if (delete_backups)
11059 			option_conflict('l', 'X');
11060 		if (argc != 0 && argc != 1)
11061 			usage_rebase();
11062 	} else if (delete_backups) {
11063 		if (abort_rebase)
11064 			option_conflict('X', 'a');
11065 		if (allow_conflict)
11066 			option_conflict('X', 'C');
11067 		if (continue_rebase)
11068 			option_conflict('X', 'c');
11069 		if (list_backups)
11070 			option_conflict('l', 'X');
11071 		if (argc != 0 && argc != 1)
11072 			usage_rebase();
11073 	} else if (allow_conflict) {
11074 		if (abort_rebase)
11075 			option_conflict('C', 'a');
11076 		if (!continue_rebase)
11077 			errx(1, "-C option requires -c");
11078 	} else {
11079 		if (abort_rebase && continue_rebase)
11080 			usage_rebase();
11081 		else if (abort_rebase || continue_rebase) {
11082 			if (argc != 0)
11083 				usage_rebase();
11084 		} else if (argc != 1)
11085 			usage_rebase();
11086 	}
11087 
11088 	cwd = getcwd(NULL, 0);
11089 	if (cwd == NULL) {
11090 		error = got_error_from_errno("getcwd");
11091 		goto done;
11092 	}
11093 
11094 	error = got_repo_pack_fds_open(&pack_fds);
11095 	if (error != NULL)
11096 		goto done;
11097 
11098 	error = got_worktree_open(&worktree, cwd);
11099 	if (error) {
11100 		if (list_backups || delete_backups) {
11101 			if (error->code != GOT_ERR_NOT_WORKTREE)
11102 				goto done;
11103 		} else {
11104 			if (error->code == GOT_ERR_NOT_WORKTREE)
11105 				error = wrap_not_worktree_error(error,
11106 				    "rebase", cwd);
11107 			goto done;
11108 		}
11109 	}
11110 
11111 	error = get_gitconfig_path(&gitconfig_path);
11112 	if (error)
11113 		goto done;
11114 	error = got_repo_open(&repo,
11115 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
11116 	    gitconfig_path, pack_fds);
11117 	if (error != NULL)
11118 		goto done;
11119 
11120 	if (worktree != NULL && !list_backups && !delete_backups) {
11121 		error = worktree_has_logmsg_ref("rebase", worktree, repo);
11122 		if (error)
11123 			goto done;
11124 	}
11125 
11126 	error = get_author(&committer, repo, worktree);
11127 	if (error && error->code != GOT_ERR_COMMIT_NO_AUTHOR)
11128 		goto done;
11129 
11130 	error = apply_unveil(got_repo_get_path(repo), 0,
11131 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
11132 	if (error)
11133 		goto done;
11134 
11135 	if (list_backups || delete_backups) {
11136 		error = process_backup_refs(
11137 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
11138 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
11139 		goto done; /* nothing else to do */
11140 	}
11141 
11142 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
11143 	    worktree);
11144 	if (error)
11145 		goto done;
11146 	if (histedit_in_progress) {
11147 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
11148 		goto done;
11149 	}
11150 
11151 	error = got_worktree_merge_in_progress(&merge_in_progress,
11152 	    worktree, repo);
11153 	if (error)
11154 		goto done;
11155 	if (merge_in_progress) {
11156 		error = got_error(GOT_ERR_MERGE_BUSY);
11157 		goto done;
11158 	}
11159 
11160 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
11161 	if (error)
11162 		goto done;
11163 
11164 	if (abort_rebase) {
11165 		if (!rebase_in_progress) {
11166 			error = got_error(GOT_ERR_NOT_REBASING);
11167 			goto done;
11168 		}
11169 		error = got_worktree_rebase_continue(&resume_commit_id,
11170 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11171 		    worktree, repo);
11172 		if (error)
11173 			goto done;
11174 		printf("Switching work tree to %s\n",
11175 		    got_ref_get_symref_target(new_base_branch));
11176 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
11177 		    new_base_branch, abort_progress, &upa);
11178 		if (error)
11179 			goto done;
11180 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
11181 		print_merge_progress_stats(&upa);
11182 		goto done; /* nothing else to do */
11183 	}
11184 
11185 	if (continue_rebase) {
11186 		if (!rebase_in_progress) {
11187 			error = got_error(GOT_ERR_NOT_REBASING);
11188 			goto done;
11189 		}
11190 		error = got_worktree_rebase_continue(&resume_commit_id,
11191 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11192 		    worktree, repo);
11193 		if (error)
11194 			goto done;
11195 
11196 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
11197 		    committer, resume_commit_id, allow_conflict, repo);
11198 		if (error)
11199 			goto done;
11200 
11201 		yca_id = got_object_id_dup(resume_commit_id);
11202 		if (yca_id == NULL) {
11203 			error = got_error_from_errno("got_object_id_dup");
11204 			goto done;
11205 		}
11206 	} else {
11207 		error = got_ref_open(&branch, repo, argv[0], 0);
11208 		if (error != NULL)
11209 			goto done;
11210 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
11211 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
11212 			    "will not rebase a branch which lives outside "
11213 			    "the \"refs/heads/\" reference namespace");
11214 			goto done;
11215 		}
11216 	}
11217 
11218 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
11219 	if (error)
11220 		goto done;
11221 
11222 	if (!continue_rebase) {
11223 		struct got_object_id *base_commit_id;
11224 
11225 		error = got_ref_open(&head_ref, repo,
11226 		    got_worktree_get_head_ref_name(worktree), 0);
11227 		if (error)
11228 			goto done;
11229 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
11230 		if (error)
11231 			goto done;
11232 		base_commit_id = got_worktree_get_base_commit_id(worktree);
11233 		if (got_object_id_cmp(base_commit_id, head_commit_id) != 0) {
11234 			error = got_error(GOT_ERR_REBASE_OUT_OF_DATE);
11235 			goto done;
11236 		}
11237 
11238 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
11239 		    base_commit_id, branch_head_commit_id, 1, repo,
11240 		    check_cancelled, NULL);
11241 		if (error) {
11242 			if (error->code == GOT_ERR_ANCESTRY) {
11243 				error = got_error_msg(GOT_ERR_ANCESTRY,
11244 				    "specified branch shares no common "
11245 				    "ancestry with work tree's branch");
11246 			}
11247 			goto done;
11248 		}
11249 
11250 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
11251 		if (error) {
11252 			if (error->code != GOT_ERR_ANCESTRY)
11253 				goto done;
11254 			error = NULL;
11255 		} else {
11256 			struct got_pathlist_head paths;
11257 			printf("%s is already based on %s\n",
11258 			    got_ref_get_name(branch),
11259 			    got_worktree_get_head_ref_name(worktree));
11260 			error = switch_head_ref(branch, branch_head_commit_id,
11261 			    worktree, repo);
11262 			if (error)
11263 				goto done;
11264 			error = got_worktree_set_base_commit_id(worktree, repo,
11265 			    branch_head_commit_id);
11266 			if (error)
11267 				goto done;
11268 			TAILQ_INIT(&paths);
11269 			error = got_pathlist_append(&paths, "", NULL);
11270 			if (error)
11271 				goto done;
11272 			error = got_worktree_checkout_files(worktree,
11273 			    &paths, repo, update_progress, &upa,
11274 			    check_cancelled, NULL);
11275 			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
11276 			if (error)
11277 				goto done;
11278 			if (upa.did_something) {
11279 				char *id_str;
11280 				error = got_object_id_str(&id_str,
11281 				    branch_head_commit_id);
11282 				if (error)
11283 					goto done;
11284 				printf("Updated to %s: %s\n",
11285 				    got_worktree_get_head_ref_name(worktree),
11286 				    id_str);
11287 				free(id_str);
11288 			} else
11289 				printf("Already up-to-date\n");
11290 			print_update_progress_stats(&upa);
11291 			goto done;
11292 		}
11293 	}
11294 
11295 	commit_id = branch_head_commit_id;
11296 	error = got_object_open_as_commit(&commit, repo, commit_id);
11297 	if (error)
11298 		goto done;
11299 
11300 	parent_ids = got_object_commit_get_parent_ids(commit);
11301 	pid = STAILQ_FIRST(parent_ids);
11302 	if (pid) {
11303 		error = collect_commits(&commits, commit_id, &pid->id,
11304 		    yca_id, got_worktree_get_path_prefix(worktree),
11305 		    GOT_ERR_REBASE_PATH, repo);
11306 		if (error)
11307 			goto done;
11308 	}
11309 
11310 	got_object_commit_close(commit);
11311 	commit = NULL;
11312 
11313 	if (!continue_rebase) {
11314 		error = got_worktree_rebase_prepare(&new_base_branch,
11315 		    &tmp_branch, &fileindex, worktree, branch, repo);
11316 		if (error)
11317 			goto done;
11318 	}
11319 
11320 	if (STAILQ_EMPTY(&commits)) {
11321 		if (continue_rebase) {
11322 			error = rebase_complete(worktree, fileindex,
11323 			    branch, tmp_branch, repo, create_backup);
11324 			goto done;
11325 		} else {
11326 			/* Fast-forward the reference of the branch. */
11327 			struct got_object_id *new_head_commit_id;
11328 			char *id_str;
11329 			error = got_ref_resolve(&new_head_commit_id, repo,
11330 			    new_base_branch);
11331 			if (error)
11332 				goto done;
11333 			error = got_object_id_str(&id_str, new_head_commit_id);
11334 			if (error)
11335 				goto done;
11336 			printf("Forwarding %s to commit %s\n",
11337 			    got_ref_get_name(branch), id_str);
11338 			free(id_str);
11339 			error = got_ref_change_ref(branch,
11340 			    new_head_commit_id);
11341 			if (error)
11342 				goto done;
11343 			/* No backup needed since objects did not change. */
11344 			create_backup = 0;
11345 		}
11346 	}
11347 
11348 	pid = NULL;
11349 	STAILQ_FOREACH(qid, &commits, entry) {
11350 
11351 		commit_id = &qid->id;
11352 		parent_id = pid ? &pid->id : yca_id;
11353 		pid = qid;
11354 
11355 		memset(&upa, 0, sizeof(upa));
11356 		error = got_worktree_rebase_merge_files(&merged_paths,
11357 		    worktree, fileindex, parent_id, commit_id, repo,
11358 		    update_progress, &upa, check_cancelled, NULL);
11359 		if (error)
11360 			goto done;
11361 
11362 		print_merge_progress_stats(&upa);
11363 		if (upa.conflicts > 0 || upa.missing > 0 ||
11364 		    upa.not_deleted > 0 || upa.unversioned > 0) {
11365 			if (upa.conflicts > 0) {
11366 				error = show_rebase_merge_conflict(&qid->id,
11367 				    repo);
11368 				if (error)
11369 					goto done;
11370 			}
11371 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11372 			break;
11373 		}
11374 
11375 		error = rebase_commit(&merged_paths, worktree, fileindex,
11376 		    tmp_branch, committer, commit_id, 0, repo);
11377 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11378 		if (error)
11379 			goto done;
11380 	}
11381 
11382 	if (upa.conflicts > 0 || upa.missing > 0 ||
11383 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11384 		error = got_worktree_rebase_postpone(worktree, fileindex);
11385 		if (error)
11386 			goto done;
11387 		if (upa.conflicts > 0 && upa.missing == 0 &&
11388 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11389 			error = got_error_msg(GOT_ERR_CONFLICTS,
11390 			    "conflicts must be resolved before rebasing "
11391 			    "can continue");
11392 		} else if (upa.conflicts > 0) {
11393 			error = got_error_msg(GOT_ERR_CONFLICTS,
11394 			    "conflicts must be resolved before rebasing "
11395 			    "can continue; changes destined for some "
11396 			    "files were not yet merged and should be "
11397 			    "merged manually if required before the "
11398 			    "rebase operation is continued");
11399 		} else {
11400 			error = got_error_msg(GOT_ERR_CONFLICTS,
11401 			    "changes destined for some files were not "
11402 			    "yet merged and should be merged manually "
11403 			    "if required before the rebase operation "
11404 			    "is continued");
11405 		}
11406 	} else
11407 		error = rebase_complete(worktree, fileindex, branch,
11408 		    tmp_branch, repo, create_backup);
11409 done:
11410 	free(cwd);
11411 	free(committer);
11412 	free(gitconfig_path);
11413 	got_object_id_queue_free(&commits);
11414 	free(branch_head_commit_id);
11415 	free(resume_commit_id);
11416 	free(head_commit_id);
11417 	free(yca_id);
11418 	if (commit)
11419 		got_object_commit_close(commit);
11420 	if (branch)
11421 		got_ref_close(branch);
11422 	if (new_base_branch)
11423 		got_ref_close(new_base_branch);
11424 	if (tmp_branch)
11425 		got_ref_close(tmp_branch);
11426 	if (head_ref)
11427 		got_ref_close(head_ref);
11428 	if (worktree)
11429 		got_worktree_close(worktree);
11430 	if (repo) {
11431 		const struct got_error *close_err = got_repo_close(repo);
11432 		if (error == NULL)
11433 			error = close_err;
11434 	}
11435 	if (pack_fds) {
11436 		const struct got_error *pack_err =
11437 		    got_repo_pack_fds_close(pack_fds);
11438 		if (error == NULL)
11439 			error = pack_err;
11440 	}
11441 	return error;
11442 }
11443 
11444 __dead static void
11445 usage_histedit(void)
11446 {
11447 	fprintf(stderr, "usage: %s histedit [-aCcdeflmX] [-F histedit-script] "
11448 	    "[branch]\n", getprogname());
11449 	exit(1);
11450 }
11451 
11452 #define GOT_HISTEDIT_PICK 'p'
11453 #define GOT_HISTEDIT_EDIT 'e'
11454 #define GOT_HISTEDIT_FOLD 'f'
11455 #define GOT_HISTEDIT_DROP 'd'
11456 #define GOT_HISTEDIT_MESG 'm'
11457 
11458 static const struct got_histedit_cmd {
11459 	unsigned char code;
11460 	const char *name;
11461 	const char *desc;
11462 } got_histedit_cmds[] = {
11463 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
11464 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
11465 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
11466 	    "be used" },
11467 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
11468 	{ GOT_HISTEDIT_MESG, "mesg",
11469 	    "single-line log message for commit above (open editor if empty)" },
11470 };
11471 
11472 struct got_histedit_list_entry {
11473 	TAILQ_ENTRY(got_histedit_list_entry) entry;
11474 	struct got_object_id *commit_id;
11475 	const struct got_histedit_cmd *cmd;
11476 	char *logmsg;
11477 };
11478 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
11479 
11480 static const struct got_error *
11481 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
11482     FILE *f, struct got_repository *repo)
11483 {
11484 	const struct got_error *err = NULL;
11485 	char *logmsg = NULL, *id_str = NULL;
11486 	struct got_commit_object *commit = NULL;
11487 	int n;
11488 
11489 	err = got_object_open_as_commit(&commit, repo, commit_id);
11490 	if (err)
11491 		goto done;
11492 
11493 	err = get_short_logmsg(&logmsg, 34, commit);
11494 	if (err)
11495 		goto done;
11496 
11497 	err = got_object_id_str(&id_str, commit_id);
11498 	if (err)
11499 		goto done;
11500 
11501 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
11502 	if (n < 0)
11503 		err = got_ferror(f, GOT_ERR_IO);
11504 done:
11505 	if (commit)
11506 		got_object_commit_close(commit);
11507 	free(id_str);
11508 	free(logmsg);
11509 	return err;
11510 }
11511 
11512 static const struct got_error *
11513 histedit_write_commit_list(struct got_object_id_queue *commits,
11514     FILE *f, int edit_logmsg_only, int fold_only, int drop_only,
11515     int edit_only, struct got_repository *repo)
11516 {
11517 	const struct got_error *err = NULL;
11518 	struct got_object_qid *qid;
11519 	const char *histedit_cmd = NULL;
11520 
11521 	if (STAILQ_EMPTY(commits))
11522 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
11523 
11524 	STAILQ_FOREACH(qid, commits, entry) {
11525 		histedit_cmd = got_histedit_cmds[0].name;
11526 		if (drop_only)
11527 			histedit_cmd = "drop";
11528 		else if (edit_only)
11529 			histedit_cmd = "edit";
11530 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
11531 			histedit_cmd = "fold";
11532 		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
11533 		if (err)
11534 			break;
11535 		if (edit_logmsg_only) {
11536 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
11537 			if (n < 0) {
11538 				err = got_ferror(f, GOT_ERR_IO);
11539 				break;
11540 			}
11541 		}
11542 	}
11543 
11544 	return err;
11545 }
11546 
11547 static const struct got_error *
11548 write_cmd_list(FILE *f, const char *branch_name,
11549     struct got_object_id_queue *commits)
11550 {
11551 	const struct got_error *err = NULL;
11552 	size_t i;
11553 	int n;
11554 	char *id_str;
11555 	struct got_object_qid *qid;
11556 
11557 	qid = STAILQ_FIRST(commits);
11558 	err = got_object_id_str(&id_str, &qid->id);
11559 	if (err)
11560 		return err;
11561 
11562 	n = fprintf(f,
11563 	    "# Editing the history of branch '%s' starting at\n"
11564 	    "# commit %s\n"
11565 	    "# Commits will be processed in order from top to "
11566 	    "bottom of this file.\n", branch_name, id_str);
11567 	if (n < 0) {
11568 		err = got_ferror(f, GOT_ERR_IO);
11569 		goto done;
11570 	}
11571 
11572 	n = fprintf(f, "# Available histedit commands:\n");
11573 	if (n < 0) {
11574 		err = got_ferror(f, GOT_ERR_IO);
11575 		goto done;
11576 	}
11577 
11578 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
11579 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
11580 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
11581 		    cmd->desc);
11582 		if (n < 0) {
11583 			err = got_ferror(f, GOT_ERR_IO);
11584 			break;
11585 		}
11586 	}
11587 done:
11588 	free(id_str);
11589 	return err;
11590 }
11591 
11592 static const struct got_error *
11593 histedit_syntax_error(int lineno)
11594 {
11595 	static char msg[42];
11596 	int ret;
11597 
11598 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
11599 	    lineno);
11600 	if (ret < 0 || (size_t)ret >= sizeof(msg))
11601 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
11602 
11603 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
11604 }
11605 
11606 static const struct got_error *
11607 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
11608     char *logmsg, struct got_repository *repo)
11609 {
11610 	const struct got_error *err;
11611 	struct got_commit_object *folded_commit = NULL;
11612 	char *id_str, *folded_logmsg = NULL;
11613 
11614 	err = got_object_id_str(&id_str, hle->commit_id);
11615 	if (err)
11616 		return err;
11617 
11618 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
11619 	if (err)
11620 		goto done;
11621 
11622 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
11623 	if (err)
11624 		goto done;
11625 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
11626 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
11627 	    folded_logmsg) == -1) {
11628 		err = got_error_from_errno("asprintf");
11629 	}
11630 done:
11631 	if (folded_commit)
11632 		got_object_commit_close(folded_commit);
11633 	free(id_str);
11634 	free(folded_logmsg);
11635 	return err;
11636 }
11637 
11638 static struct got_histedit_list_entry *
11639 get_folded_commits(struct got_histedit_list_entry *hle)
11640 {
11641 	struct got_histedit_list_entry *prev, *folded = NULL;
11642 
11643 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
11644 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
11645 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
11646 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
11647 			folded = prev;
11648 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
11649 	}
11650 
11651 	return folded;
11652 }
11653 
11654 static const struct got_error *
11655 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
11656     struct got_repository *repo)
11657 {
11658 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
11659 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
11660 	const struct got_error *err = NULL;
11661 	struct got_commit_object *commit = NULL;
11662 	int logmsg_len;
11663 	int fd;
11664 	struct got_histedit_list_entry *folded = NULL;
11665 
11666 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
11667 	if (err)
11668 		return err;
11669 
11670 	folded = get_folded_commits(hle);
11671 	if (folded) {
11672 		while (folded != hle) {
11673 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
11674 				folded = TAILQ_NEXT(folded, entry);
11675 				continue;
11676 			}
11677 			err = append_folded_commit_msg(&new_msg, folded,
11678 			    logmsg, repo);
11679 			if (err)
11680 				goto done;
11681 			free(logmsg);
11682 			logmsg = new_msg;
11683 			folded = TAILQ_NEXT(folded, entry);
11684 		}
11685 	}
11686 
11687 	err = got_object_id_str(&id_str, hle->commit_id);
11688 	if (err)
11689 		goto done;
11690 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
11691 	if (err)
11692 		goto done;
11693 	logmsg_len = asprintf(&new_msg,
11694 	    "%s\n# original log message of commit %s: %s",
11695 	    logmsg ? logmsg : "", id_str, orig_logmsg);
11696 	if (logmsg_len == -1) {
11697 		err = got_error_from_errno("asprintf");
11698 		goto done;
11699 	}
11700 	free(logmsg);
11701 	logmsg = new_msg;
11702 
11703 	err = got_object_id_str(&id_str, hle->commit_id);
11704 	if (err)
11705 		goto done;
11706 
11707 	err = got_opentemp_named_fd(&logmsg_path, &fd,
11708 	    GOT_TMPDIR_STR "/got-logmsg", "");
11709 	if (err)
11710 		goto done;
11711 
11712 	write(fd, logmsg, logmsg_len);
11713 	close(fd);
11714 
11715 	err = get_editor(&editor);
11716 	if (err)
11717 		goto done;
11718 
11719 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
11720 	    logmsg_len, 0);
11721 	if (err) {
11722 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
11723 			goto done;
11724 		err = NULL;
11725 		hle->logmsg = strdup(new_msg);
11726 		if (hle->logmsg == NULL)
11727 			err = got_error_from_errno("strdup");
11728 	}
11729 done:
11730 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
11731 		err = got_error_from_errno2("unlink", logmsg_path);
11732 	free(logmsg_path);
11733 	free(logmsg);
11734 	free(orig_logmsg);
11735 	free(editor);
11736 	if (commit)
11737 		got_object_commit_close(commit);
11738 	return err;
11739 }
11740 
11741 static const struct got_error *
11742 histedit_parse_list(struct got_histedit_list *histedit_cmds,
11743     FILE *f, struct got_repository *repo)
11744 {
11745 	const struct got_error *err = NULL;
11746 	char *line = NULL, *p, *end;
11747 	size_t i, linesize = 0;
11748 	ssize_t linelen;
11749 	int lineno = 0, lastcmd = -1;
11750 	const struct got_histedit_cmd *cmd;
11751 	struct got_object_id *commit_id = NULL;
11752 	struct got_histedit_list_entry *hle = NULL;
11753 
11754 	for (;;) {
11755 		linelen = getline(&line, &linesize, f);
11756 		if (linelen == -1) {
11757 			const struct got_error *getline_err;
11758 			if (feof(f))
11759 				break;
11760 			getline_err = got_error_from_errno("getline");
11761 			err = got_ferror(f, getline_err->code);
11762 			break;
11763 		}
11764 		lineno++;
11765 		p = line;
11766 		while (isspace((unsigned char)p[0]))
11767 			p++;
11768 		if (p[0] == '#' || p[0] == '\0')
11769 			continue;
11770 		cmd = NULL;
11771 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
11772 			cmd = &got_histedit_cmds[i];
11773 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
11774 			    isspace((unsigned char)p[strlen(cmd->name)])) {
11775 				p += strlen(cmd->name);
11776 				break;
11777 			}
11778 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
11779 				p++;
11780 				break;
11781 			}
11782 		}
11783 		if (i == nitems(got_histedit_cmds)) {
11784 			err = histedit_syntax_error(lineno);
11785 			break;
11786 		}
11787 		while (isspace((unsigned char)p[0]))
11788 			p++;
11789 		if (cmd->code == GOT_HISTEDIT_MESG) {
11790 			if (lastcmd != GOT_HISTEDIT_PICK &&
11791 			    lastcmd != GOT_HISTEDIT_EDIT) {
11792 				err = got_error(GOT_ERR_HISTEDIT_CMD);
11793 				break;
11794 			}
11795 			if (p[0] == '\0') {
11796 				err = histedit_edit_logmsg(hle, repo);
11797 				if (err)
11798 					break;
11799 			} else {
11800 				hle->logmsg = strdup(p);
11801 				if (hle->logmsg == NULL) {
11802 					err = got_error_from_errno("strdup");
11803 					break;
11804 				}
11805 			}
11806 			lastcmd = cmd->code;
11807 			continue;
11808 		} else {
11809 			end = p;
11810 			while (end[0] && !isspace((unsigned char)end[0]))
11811 				end++;
11812 			*end = '\0';
11813 
11814 			err = got_object_resolve_id_str(&commit_id, repo, p);
11815 			if (err) {
11816 				/* override error code */
11817 				err = histedit_syntax_error(lineno);
11818 				break;
11819 			}
11820 		}
11821 		hle = malloc(sizeof(*hle));
11822 		if (hle == NULL) {
11823 			err = got_error_from_errno("malloc");
11824 			break;
11825 		}
11826 		hle->cmd = cmd;
11827 		hle->commit_id = commit_id;
11828 		hle->logmsg = NULL;
11829 		commit_id = NULL;
11830 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
11831 		lastcmd = cmd->code;
11832 	}
11833 
11834 	free(line);
11835 	free(commit_id);
11836 	return err;
11837 }
11838 
11839 static const struct got_error *
11840 histedit_check_script(struct got_histedit_list *histedit_cmds,
11841     struct got_object_id_queue *commits, struct got_repository *repo)
11842 {
11843 	const struct got_error *err = NULL;
11844 	struct got_object_qid *qid;
11845 	struct got_histedit_list_entry *hle;
11846 	static char msg[92];
11847 	char *id_str;
11848 
11849 	if (TAILQ_EMPTY(histedit_cmds))
11850 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
11851 		    "histedit script contains no commands");
11852 	if (STAILQ_EMPTY(commits))
11853 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
11854 
11855 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
11856 		struct got_histedit_list_entry *hle2;
11857 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
11858 			if (hle == hle2)
11859 				continue;
11860 			if (got_object_id_cmp(hle->commit_id,
11861 			    hle2->commit_id) != 0)
11862 				continue;
11863 			err = got_object_id_str(&id_str, hle->commit_id);
11864 			if (err)
11865 				return err;
11866 			snprintf(msg, sizeof(msg), "commit %s is listed "
11867 			    "more than once in histedit script", id_str);
11868 			free(id_str);
11869 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
11870 		}
11871 	}
11872 
11873 	STAILQ_FOREACH(qid, commits, entry) {
11874 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
11875 			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
11876 				break;
11877 		}
11878 		if (hle == NULL) {
11879 			err = got_object_id_str(&id_str, &qid->id);
11880 			if (err)
11881 				return err;
11882 			snprintf(msg, sizeof(msg),
11883 			    "commit %s missing from histedit script", id_str);
11884 			free(id_str);
11885 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
11886 		}
11887 	}
11888 
11889 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
11890 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
11891 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
11892 		    "last commit in histedit script cannot be folded");
11893 
11894 	return NULL;
11895 }
11896 
11897 static const struct got_error *
11898 histedit_run_editor(struct got_histedit_list *histedit_cmds,
11899     const char *path, struct got_object_id_queue *commits,
11900     struct got_repository *repo)
11901 {
11902 	const struct got_error *err = NULL;
11903 	char *editor;
11904 	FILE *f = NULL;
11905 
11906 	err = get_editor(&editor);
11907 	if (err)
11908 		return err;
11909 
11910 	if (spawn_editor(editor, path) == -1) {
11911 		err = got_error_from_errno("failed spawning editor");
11912 		goto done;
11913 	}
11914 
11915 	f = fopen(path, "re");
11916 	if (f == NULL) {
11917 		err = got_error_from_errno("fopen");
11918 		goto done;
11919 	}
11920 	err = histedit_parse_list(histedit_cmds, f, repo);
11921 	if (err)
11922 		goto done;
11923 
11924 	err = histedit_check_script(histedit_cmds, commits, repo);
11925 done:
11926 	if (f && fclose(f) == EOF && err == NULL)
11927 		err = got_error_from_errno("fclose");
11928 	free(editor);
11929 	return err;
11930 }
11931 
11932 static const struct got_error *
11933 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
11934     struct got_object_id_queue *, const char *, const char *,
11935     struct got_repository *);
11936 
11937 static const struct got_error *
11938 histedit_edit_script(struct got_histedit_list *histedit_cmds,
11939     struct got_object_id_queue *commits, const char *branch_name,
11940     int edit_logmsg_only, int fold_only, int drop_only, int edit_only,
11941     struct got_repository *repo)
11942 {
11943 	const struct got_error *err;
11944 	FILE *f = NULL;
11945 	char *path = NULL;
11946 
11947 	err = got_opentemp_named(&path, &f, "got-histedit", "");
11948 	if (err)
11949 		return err;
11950 
11951 	err = write_cmd_list(f, branch_name, commits);
11952 	if (err)
11953 		goto done;
11954 
11955 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
11956 	    fold_only, drop_only, edit_only, repo);
11957 	if (err)
11958 		goto done;
11959 
11960 	if (drop_only || edit_logmsg_only || fold_only || edit_only) {
11961 		rewind(f);
11962 		err = histedit_parse_list(histedit_cmds, f, repo);
11963 	} else {
11964 		if (fclose(f) == EOF) {
11965 			err = got_error_from_errno("fclose");
11966 			goto done;
11967 		}
11968 		f = NULL;
11969 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
11970 		if (err) {
11971 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
11972 			    err->code != GOT_ERR_HISTEDIT_CMD)
11973 				goto done;
11974 			err = histedit_edit_list_retry(histedit_cmds, err,
11975 			    commits, path, branch_name, repo);
11976 		}
11977 	}
11978 done:
11979 	if (f && fclose(f) == EOF && err == NULL)
11980 		err = got_error_from_errno("fclose");
11981 	if (path && unlink(path) != 0 && err == NULL)
11982 		err = got_error_from_errno2("unlink", path);
11983 	free(path);
11984 	return err;
11985 }
11986 
11987 static const struct got_error *
11988 histedit_save_list(struct got_histedit_list *histedit_cmds,
11989     struct got_worktree *worktree, struct got_repository *repo)
11990 {
11991 	const struct got_error *err = NULL;
11992 	char *path = NULL;
11993 	FILE *f = NULL;
11994 	struct got_histedit_list_entry *hle;
11995 	struct got_commit_object *commit = NULL;
11996 
11997 	err = got_worktree_get_histedit_script_path(&path, worktree);
11998 	if (err)
11999 		return err;
12000 
12001 	f = fopen(path, "we");
12002 	if (f == NULL) {
12003 		err = got_error_from_errno2("fopen", path);
12004 		goto done;
12005 	}
12006 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
12007 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
12008 		    repo);
12009 		if (err)
12010 			break;
12011 
12012 		if (hle->logmsg) {
12013 			int n = fprintf(f, "%c %s\n",
12014 			    GOT_HISTEDIT_MESG, hle->logmsg);
12015 			if (n < 0) {
12016 				err = got_ferror(f, GOT_ERR_IO);
12017 				break;
12018 			}
12019 		}
12020 	}
12021 done:
12022 	if (f && fclose(f) == EOF && err == NULL)
12023 		err = got_error_from_errno("fclose");
12024 	free(path);
12025 	if (commit)
12026 		got_object_commit_close(commit);
12027 	return err;
12028 }
12029 
12030 static void
12031 histedit_free_list(struct got_histedit_list *histedit_cmds)
12032 {
12033 	struct got_histedit_list_entry *hle;
12034 
12035 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
12036 		TAILQ_REMOVE(histedit_cmds, hle, entry);
12037 		free(hle);
12038 	}
12039 }
12040 
12041 static const struct got_error *
12042 histedit_load_list(struct got_histedit_list *histedit_cmds,
12043     const char *path, struct got_repository *repo)
12044 {
12045 	const struct got_error *err = NULL;
12046 	FILE *f = NULL;
12047 
12048 	f = fopen(path, "re");
12049 	if (f == NULL) {
12050 		err = got_error_from_errno2("fopen", path);
12051 		goto done;
12052 	}
12053 
12054 	err = histedit_parse_list(histedit_cmds, f, repo);
12055 done:
12056 	if (f && fclose(f) == EOF && err == NULL)
12057 		err = got_error_from_errno("fclose");
12058 	return err;
12059 }
12060 
12061 static const struct got_error *
12062 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
12063     const struct got_error *edit_err, struct got_object_id_queue *commits,
12064     const char *path, const char *branch_name, struct got_repository *repo)
12065 {
12066 	const struct got_error *err = NULL, *prev_err = edit_err;
12067 	int resp = ' ';
12068 
12069 	while (resp != 'c' && resp != 'r' && resp != 'a') {
12070 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
12071 		    "or (a)bort: ", getprogname(), prev_err->msg);
12072 		resp = getchar();
12073 		if (resp == '\n')
12074 			resp = getchar();
12075 		if (resp == 'c') {
12076 			histedit_free_list(histedit_cmds);
12077 			err = histedit_run_editor(histedit_cmds, path, commits,
12078 			    repo);
12079 			if (err) {
12080 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12081 				    err->code != GOT_ERR_HISTEDIT_CMD)
12082 					break;
12083 				prev_err = err;
12084 				resp = ' ';
12085 				continue;
12086 			}
12087 			break;
12088 		} else if (resp == 'r') {
12089 			histedit_free_list(histedit_cmds);
12090 			err = histedit_edit_script(histedit_cmds,
12091 			    commits, branch_name, 0, 0, 0, 0, repo);
12092 			if (err) {
12093 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12094 				    err->code != GOT_ERR_HISTEDIT_CMD)
12095 					break;
12096 				prev_err = err;
12097 				resp = ' ';
12098 				continue;
12099 			}
12100 			break;
12101 		} else if (resp == 'a') {
12102 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
12103 			break;
12104 		} else
12105 			printf("invalid response '%c'\n", resp);
12106 	}
12107 
12108 	return err;
12109 }
12110 
12111 static const struct got_error *
12112 histedit_complete(struct got_worktree *worktree,
12113     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
12114     struct got_reference *branch, struct got_repository *repo)
12115 {
12116 	printf("Switching work tree to %s\n",
12117 	    got_ref_get_symref_target(branch));
12118 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
12119 	    branch, repo);
12120 }
12121 
12122 static const struct got_error *
12123 show_histedit_progress(struct got_commit_object *commit,
12124     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
12125 {
12126 	const struct got_error *err;
12127 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
12128 
12129 	err = got_object_id_str(&old_id_str, hle->commit_id);
12130 	if (err)
12131 		goto done;
12132 
12133 	if (new_id) {
12134 		err = got_object_id_str(&new_id_str, new_id);
12135 		if (err)
12136 			goto done;
12137 	}
12138 
12139 	old_id_str[12] = '\0';
12140 	if (new_id_str)
12141 		new_id_str[12] = '\0';
12142 
12143 	if (hle->logmsg) {
12144 		logmsg = strdup(hle->logmsg);
12145 		if (logmsg == NULL) {
12146 			err = got_error_from_errno("strdup");
12147 			goto done;
12148 		}
12149 		trim_logmsg(logmsg, 42);
12150 	} else {
12151 		err = get_short_logmsg(&logmsg, 42, commit);
12152 		if (err)
12153 			goto done;
12154 	}
12155 
12156 	switch (hle->cmd->code) {
12157 	case GOT_HISTEDIT_PICK:
12158 	case GOT_HISTEDIT_EDIT:
12159 		printf("%s -> %s: %s\n", old_id_str,
12160 		    new_id_str ? new_id_str : "no-op change", logmsg);
12161 		break;
12162 	case GOT_HISTEDIT_DROP:
12163 	case GOT_HISTEDIT_FOLD:
12164 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
12165 		    logmsg);
12166 		break;
12167 	default:
12168 		break;
12169 	}
12170 done:
12171 	free(old_id_str);
12172 	free(new_id_str);
12173 	return err;
12174 }
12175 
12176 static const struct got_error *
12177 histedit_commit(struct got_pathlist_head *merged_paths,
12178     struct got_worktree *worktree, struct got_fileindex *fileindex,
12179     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
12180     const char *committer, int allow_conflict, struct got_repository *repo)
12181 {
12182 	const struct got_error *err;
12183 	struct got_commit_object *commit;
12184 	struct got_object_id *new_commit_id;
12185 
12186 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
12187 	    && hle->logmsg == NULL) {
12188 		err = histedit_edit_logmsg(hle, repo);
12189 		if (err)
12190 			return err;
12191 	}
12192 
12193 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
12194 	if (err)
12195 		return err;
12196 
12197 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
12198 	    worktree, fileindex, tmp_branch, committer, commit, hle->commit_id,
12199 	    hle->logmsg, allow_conflict, repo);
12200 	if (err) {
12201 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
12202 			goto done;
12203 		err = show_histedit_progress(commit, hle, NULL);
12204 	} else {
12205 		err = show_histedit_progress(commit, hle, new_commit_id);
12206 		free(new_commit_id);
12207 	}
12208 done:
12209 	got_object_commit_close(commit);
12210 	return err;
12211 }
12212 
12213 static const struct got_error *
12214 histedit_skip_commit(struct got_histedit_list_entry *hle,
12215     struct got_worktree *worktree, struct got_repository *repo)
12216 {
12217 	const struct got_error *error;
12218 	struct got_commit_object *commit;
12219 
12220 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
12221 	    repo);
12222 	if (error)
12223 		return error;
12224 
12225 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
12226 	if (error)
12227 		return error;
12228 
12229 	error = show_histedit_progress(commit, hle, NULL);
12230 	got_object_commit_close(commit);
12231 	return error;
12232 }
12233 
12234 static const struct got_error *
12235 check_local_changes(void *arg, unsigned char status,
12236     unsigned char staged_status, const char *path,
12237     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
12238     struct got_object_id *commit_id, int dirfd, const char *de_name)
12239 {
12240 	int *have_local_changes = arg;
12241 
12242 	switch (status) {
12243 	case GOT_STATUS_ADD:
12244 	case GOT_STATUS_DELETE:
12245 	case GOT_STATUS_MODIFY:
12246 	case GOT_STATUS_CONFLICT:
12247 		*have_local_changes = 1;
12248 		return got_error(GOT_ERR_CANCELLED);
12249 	default:
12250 		break;
12251 	}
12252 
12253 	switch (staged_status) {
12254 	case GOT_STATUS_ADD:
12255 	case GOT_STATUS_DELETE:
12256 	case GOT_STATUS_MODIFY:
12257 		*have_local_changes = 1;
12258 		return got_error(GOT_ERR_CANCELLED);
12259 	default:
12260 		break;
12261 	}
12262 
12263 	return NULL;
12264 }
12265 
12266 static const struct got_error *
12267 cmd_histedit(int argc, char *argv[])
12268 {
12269 	const struct got_error *error = NULL;
12270 	struct got_worktree *worktree = NULL;
12271 	struct got_fileindex *fileindex = NULL;
12272 	struct got_repository *repo = NULL;
12273 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
12274 	struct got_reference *branch = NULL;
12275 	struct got_reference *tmp_branch = NULL;
12276 	struct got_object_id *resume_commit_id = NULL;
12277 	struct got_object_id *base_commit_id = NULL;
12278 	struct got_object_id *head_commit_id = NULL;
12279 	struct got_commit_object *commit = NULL;
12280 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
12281 	struct got_update_progress_arg upa;
12282 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
12283 	int drop_only = 0, edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
12284 	int allow_conflict = 0, list_backups = 0, delete_backups = 0;
12285 	const char *edit_script_path = NULL;
12286 	struct got_object_id_queue commits;
12287 	struct got_pathlist_head merged_paths;
12288 	const struct got_object_id_queue *parent_ids;
12289 	struct got_object_qid *pid;
12290 	struct got_histedit_list histedit_cmds;
12291 	struct got_histedit_list_entry *hle;
12292 	int *pack_fds = NULL;
12293 
12294 	STAILQ_INIT(&commits);
12295 	TAILQ_INIT(&histedit_cmds);
12296 	TAILQ_INIT(&merged_paths);
12297 	memset(&upa, 0, sizeof(upa));
12298 
12299 #ifndef PROFILE
12300 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12301 	    "unveil", NULL) == -1)
12302 		err(1, "pledge");
12303 #endif
12304 
12305 	while ((ch = getopt(argc, argv, "aCcdeF:flmX")) != -1) {
12306 		switch (ch) {
12307 		case 'a':
12308 			abort_edit = 1;
12309 			break;
12310 		case 'C':
12311 			allow_conflict = 1;
12312 			break;
12313 		case 'c':
12314 			continue_edit = 1;
12315 			break;
12316 		case 'd':
12317 			drop_only = 1;
12318 			break;
12319 		case 'e':
12320 			edit_only = 1;
12321 			break;
12322 		case 'F':
12323 			edit_script_path = optarg;
12324 			break;
12325 		case 'f':
12326 			fold_only = 1;
12327 			break;
12328 		case 'l':
12329 			list_backups = 1;
12330 			break;
12331 		case 'm':
12332 			edit_logmsg_only = 1;
12333 			break;
12334 		case 'X':
12335 			delete_backups = 1;
12336 			break;
12337 		default:
12338 			usage_histedit();
12339 			/* NOTREACHED */
12340 		}
12341 	}
12342 
12343 	argc -= optind;
12344 	argv += optind;
12345 
12346 	if (abort_edit && allow_conflict)
12347 		option_conflict('a', 'C');
12348 	if (abort_edit && continue_edit)
12349 		option_conflict('a', 'c');
12350 	if (edit_script_path && allow_conflict)
12351 		option_conflict('F', 'C');
12352 	if (edit_script_path && edit_logmsg_only)
12353 		option_conflict('F', 'm');
12354 	if (abort_edit && edit_logmsg_only)
12355 		option_conflict('a', 'm');
12356 	if (edit_logmsg_only && allow_conflict)
12357 		option_conflict('m', 'C');
12358 	if (continue_edit && edit_logmsg_only)
12359 		option_conflict('c', 'm');
12360 	if (abort_edit && fold_only)
12361 		option_conflict('a', 'f');
12362 	if (fold_only && allow_conflict)
12363 		option_conflict('f', 'C');
12364 	if (continue_edit && fold_only)
12365 		option_conflict('c', 'f');
12366 	if (fold_only && edit_logmsg_only)
12367 		option_conflict('f', 'm');
12368 	if (edit_script_path && fold_only)
12369 		option_conflict('F', 'f');
12370 	if (abort_edit && edit_only)
12371 		option_conflict('a', 'e');
12372 	if (continue_edit && edit_only)
12373 		option_conflict('c', 'e');
12374 	if (edit_only && edit_logmsg_only)
12375 		option_conflict('e', 'm');
12376 	if (edit_script_path && edit_only)
12377 		option_conflict('F', 'e');
12378 	if (fold_only && edit_only)
12379 		option_conflict('f', 'e');
12380 	if (drop_only && abort_edit)
12381 		option_conflict('d', 'a');
12382 	if (drop_only && allow_conflict)
12383 		option_conflict('d', 'C');
12384 	if (drop_only && continue_edit)
12385 		option_conflict('d', 'c');
12386 	if (drop_only && edit_logmsg_only)
12387 		option_conflict('d', 'm');
12388 	if (drop_only && edit_only)
12389 		option_conflict('d', 'e');
12390 	if (drop_only && edit_script_path)
12391 		option_conflict('d', 'F');
12392 	if (drop_only && fold_only)
12393 		option_conflict('d', 'f');
12394 	if (list_backups) {
12395 		if (abort_edit)
12396 			option_conflict('l', 'a');
12397 		if (allow_conflict)
12398 			option_conflict('l', 'C');
12399 		if (continue_edit)
12400 			option_conflict('l', 'c');
12401 		if (edit_script_path)
12402 			option_conflict('l', 'F');
12403 		if (edit_logmsg_only)
12404 			option_conflict('l', 'm');
12405 		if (drop_only)
12406 			option_conflict('l', 'd');
12407 		if (fold_only)
12408 			option_conflict('l', 'f');
12409 		if (edit_only)
12410 			option_conflict('l', 'e');
12411 		if (delete_backups)
12412 			option_conflict('l', 'X');
12413 		if (argc != 0 && argc != 1)
12414 			usage_histedit();
12415 	} else if (delete_backups) {
12416 		if (abort_edit)
12417 			option_conflict('X', 'a');
12418 		if (allow_conflict)
12419 			option_conflict('X', 'C');
12420 		if (continue_edit)
12421 			option_conflict('X', 'c');
12422 		if (drop_only)
12423 			option_conflict('X', 'd');
12424 		if (edit_script_path)
12425 			option_conflict('X', 'F');
12426 		if (edit_logmsg_only)
12427 			option_conflict('X', 'm');
12428 		if (fold_only)
12429 			option_conflict('X', 'f');
12430 		if (edit_only)
12431 			option_conflict('X', 'e');
12432 		if (list_backups)
12433 			option_conflict('X', 'l');
12434 		if (argc != 0 && argc != 1)
12435 			usage_histedit();
12436 	} else if (allow_conflict && !continue_edit)
12437 		errx(1, "-C option requires -c");
12438 	else if (argc != 0)
12439 		usage_histedit();
12440 
12441 	/*
12442 	 * This command cannot apply unveil(2) in all cases because the
12443 	 * user may choose to run an editor to edit the histedit script
12444 	 * and to edit individual commit log messages.
12445 	 * unveil(2) traverses exec(2); if an editor is used we have to
12446 	 * apply unveil after edit script and log messages have been written.
12447 	 * XXX TODO: Make use of unveil(2) where possible.
12448 	 */
12449 
12450 	cwd = getcwd(NULL, 0);
12451 	if (cwd == NULL) {
12452 		error = got_error_from_errno("getcwd");
12453 		goto done;
12454 	}
12455 
12456 	error = got_repo_pack_fds_open(&pack_fds);
12457 	if (error != NULL)
12458 		goto done;
12459 
12460 	error = got_worktree_open(&worktree, cwd);
12461 	if (error) {
12462 		if (list_backups || delete_backups) {
12463 			if (error->code != GOT_ERR_NOT_WORKTREE)
12464 				goto done;
12465 		} else {
12466 			if (error->code == GOT_ERR_NOT_WORKTREE)
12467 				error = wrap_not_worktree_error(error,
12468 				    "histedit", cwd);
12469 			goto done;
12470 		}
12471 	}
12472 
12473 	if (list_backups || delete_backups) {
12474 		error = got_repo_open(&repo,
12475 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
12476 		    NULL, pack_fds);
12477 		if (error != NULL)
12478 			goto done;
12479 		error = apply_unveil(got_repo_get_path(repo), 0,
12480 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
12481 		if (error)
12482 			goto done;
12483 		error = process_backup_refs(
12484 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
12485 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
12486 		goto done; /* nothing else to do */
12487 	}
12488 
12489 	error = get_gitconfig_path(&gitconfig_path);
12490 	if (error)
12491 		goto done;
12492 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12493 	    gitconfig_path, pack_fds);
12494 	if (error != NULL)
12495 		goto done;
12496 
12497 	if (worktree != NULL && !list_backups && !delete_backups) {
12498 		error = worktree_has_logmsg_ref("histedit", worktree, repo);
12499 		if (error)
12500 			goto done;
12501 	}
12502 
12503 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
12504 	if (error)
12505 		goto done;
12506 	if (rebase_in_progress) {
12507 		error = got_error(GOT_ERR_REBASING);
12508 		goto done;
12509 	}
12510 
12511 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
12512 	    repo);
12513 	if (error)
12514 		goto done;
12515 	if (merge_in_progress) {
12516 		error = got_error(GOT_ERR_MERGE_BUSY);
12517 		goto done;
12518 	}
12519 
12520 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
12521 	if (error)
12522 		goto done;
12523 
12524 	if (edit_in_progress && edit_logmsg_only) {
12525 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12526 		    "histedit operation is in progress in this "
12527 		    "work tree and must be continued or aborted "
12528 		    "before the -m option can be used");
12529 		goto done;
12530 	}
12531 	if (edit_in_progress && drop_only) {
12532 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12533 		    "histedit operation is in progress in this "
12534 		    "work tree and must be continued or aborted "
12535 		    "before the -d option can be used");
12536 		goto done;
12537 	}
12538 	if (edit_in_progress && fold_only) {
12539 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12540 		    "histedit operation is in progress in this "
12541 		    "work tree and must be continued or aborted "
12542 		    "before the -f option can be used");
12543 		goto done;
12544 	}
12545 	if (edit_in_progress && edit_only) {
12546 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12547 		    "histedit operation is in progress in this "
12548 		    "work tree and must be continued or aborted "
12549 		    "before the -e option can be used");
12550 		goto done;
12551 	}
12552 
12553 	if (edit_in_progress && abort_edit) {
12554 		error = got_worktree_histedit_continue(&resume_commit_id,
12555 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12556 		    worktree, repo);
12557 		if (error)
12558 			goto done;
12559 		printf("Switching work tree to %s\n",
12560 		    got_ref_get_symref_target(branch));
12561 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
12562 		    branch, base_commit_id, abort_progress, &upa);
12563 		if (error)
12564 			goto done;
12565 		printf("Histedit of %s aborted\n",
12566 		    got_ref_get_symref_target(branch));
12567 		print_merge_progress_stats(&upa);
12568 		goto done; /* nothing else to do */
12569 	} else if (abort_edit) {
12570 		error = got_error(GOT_ERR_NOT_HISTEDIT);
12571 		goto done;
12572 	}
12573 
12574 	error = get_author(&committer, repo, worktree);
12575 	if (error)
12576 		goto done;
12577 
12578 	if (continue_edit) {
12579 		char *path;
12580 
12581 		if (!edit_in_progress) {
12582 			error = got_error(GOT_ERR_NOT_HISTEDIT);
12583 			goto done;
12584 		}
12585 
12586 		error = got_worktree_get_histedit_script_path(&path, worktree);
12587 		if (error)
12588 			goto done;
12589 
12590 		error = histedit_load_list(&histedit_cmds, path, repo);
12591 		free(path);
12592 		if (error)
12593 			goto done;
12594 
12595 		error = got_worktree_histedit_continue(&resume_commit_id,
12596 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12597 		    worktree, repo);
12598 		if (error)
12599 			goto done;
12600 
12601 		error = got_ref_resolve(&head_commit_id, repo, branch);
12602 		if (error)
12603 			goto done;
12604 
12605 		error = got_object_open_as_commit(&commit, repo,
12606 		    head_commit_id);
12607 		if (error)
12608 			goto done;
12609 		parent_ids = got_object_commit_get_parent_ids(commit);
12610 		pid = STAILQ_FIRST(parent_ids);
12611 		if (pid == NULL) {
12612 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12613 			goto done;
12614 		}
12615 		error = collect_commits(&commits, head_commit_id, &pid->id,
12616 		    base_commit_id, got_worktree_get_path_prefix(worktree),
12617 		    GOT_ERR_HISTEDIT_PATH, repo);
12618 		got_object_commit_close(commit);
12619 		commit = NULL;
12620 		if (error)
12621 			goto done;
12622 	} else {
12623 		if (edit_in_progress) {
12624 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
12625 			goto done;
12626 		}
12627 
12628 		error = got_ref_open(&branch, repo,
12629 		    got_worktree_get_head_ref_name(worktree), 0);
12630 		if (error != NULL)
12631 			goto done;
12632 
12633 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
12634 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
12635 			    "will not edit commit history of a branch outside "
12636 			    "the \"refs/heads/\" reference namespace");
12637 			goto done;
12638 		}
12639 
12640 		error = got_ref_resolve(&head_commit_id, repo, branch);
12641 		got_ref_close(branch);
12642 		branch = NULL;
12643 		if (error)
12644 			goto done;
12645 
12646 		error = got_object_open_as_commit(&commit, repo,
12647 		    head_commit_id);
12648 		if (error)
12649 			goto done;
12650 		parent_ids = got_object_commit_get_parent_ids(commit);
12651 		pid = STAILQ_FIRST(parent_ids);
12652 		if (pid == NULL) {
12653 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12654 			goto done;
12655 		}
12656 		error = collect_commits(&commits, head_commit_id, &pid->id,
12657 		    got_worktree_get_base_commit_id(worktree),
12658 		    got_worktree_get_path_prefix(worktree),
12659 		    GOT_ERR_HISTEDIT_PATH, repo);
12660 		got_object_commit_close(commit);
12661 		commit = NULL;
12662 		if (error)
12663 			goto done;
12664 
12665 		if (STAILQ_EMPTY(&commits)) {
12666 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12667 			goto done;
12668 		}
12669 
12670 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
12671 		    &base_commit_id, &fileindex, worktree, repo);
12672 		if (error)
12673 			goto done;
12674 
12675 		if (edit_script_path) {
12676 			error = histedit_load_list(&histedit_cmds,
12677 			    edit_script_path, repo);
12678 			if (error) {
12679 				got_worktree_histedit_abort(worktree, fileindex,
12680 				    repo, branch, base_commit_id,
12681 				    abort_progress, &upa);
12682 				print_merge_progress_stats(&upa);
12683 				goto done;
12684 			}
12685 		} else {
12686 			const char *branch_name;
12687 			branch_name = got_ref_get_symref_target(branch);
12688 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
12689 				branch_name += 11;
12690 			error = histedit_edit_script(&histedit_cmds, &commits,
12691 			    branch_name, edit_logmsg_only, fold_only,
12692 			    drop_only, edit_only, repo);
12693 			if (error) {
12694 				got_worktree_histedit_abort(worktree, fileindex,
12695 				    repo, branch, base_commit_id,
12696 				    abort_progress, &upa);
12697 				print_merge_progress_stats(&upa);
12698 				goto done;
12699 			}
12700 
12701 		}
12702 
12703 		error = histedit_save_list(&histedit_cmds, worktree,
12704 		    repo);
12705 		if (error) {
12706 			got_worktree_histedit_abort(worktree, fileindex,
12707 			    repo, branch, base_commit_id,
12708 			    abort_progress, &upa);
12709 			print_merge_progress_stats(&upa);
12710 			goto done;
12711 		}
12712 
12713 	}
12714 
12715 	error = histedit_check_script(&histedit_cmds, &commits, repo);
12716 	if (error)
12717 		goto done;
12718 
12719 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
12720 		if (resume_commit_id) {
12721 			if (got_object_id_cmp(hle->commit_id,
12722 			    resume_commit_id) != 0)
12723 				continue;
12724 
12725 			resume_commit_id = NULL;
12726 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
12727 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
12728 				error = histedit_skip_commit(hle, worktree,
12729 				    repo);
12730 				if (error)
12731 					goto done;
12732 			} else {
12733 				struct got_pathlist_head paths;
12734 				int have_changes = 0;
12735 
12736 				TAILQ_INIT(&paths);
12737 				error = got_pathlist_append(&paths, "", NULL);
12738 				if (error)
12739 					goto done;
12740 				error = got_worktree_status(worktree, &paths,
12741 				    repo, 0, check_local_changes, &have_changes,
12742 				    check_cancelled, NULL);
12743 				got_pathlist_free(&paths,
12744 				    GOT_PATHLIST_FREE_NONE);
12745 				if (error) {
12746 					if (error->code != GOT_ERR_CANCELLED)
12747 						goto done;
12748 					if (sigint_received || sigpipe_received)
12749 						goto done;
12750 				}
12751 				if (have_changes) {
12752 					error = histedit_commit(NULL, worktree,
12753 					    fileindex, tmp_branch, hle,
12754 					    committer, allow_conflict, repo);
12755 					if (error)
12756 						goto done;
12757 				} else {
12758 					error = got_object_open_as_commit(
12759 					    &commit, repo, hle->commit_id);
12760 					if (error)
12761 						goto done;
12762 					error = show_histedit_progress(commit,
12763 					    hle, NULL);
12764 					got_object_commit_close(commit);
12765 					commit = NULL;
12766 					if (error)
12767 						goto done;
12768 				}
12769 			}
12770 			continue;
12771 		}
12772 
12773 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
12774 			error = histedit_skip_commit(hle, worktree, repo);
12775 			if (error)
12776 				goto done;
12777 			continue;
12778 		}
12779 
12780 		error = got_object_open_as_commit(&commit, repo,
12781 		    hle->commit_id);
12782 		if (error)
12783 			goto done;
12784 		parent_ids = got_object_commit_get_parent_ids(commit);
12785 		pid = STAILQ_FIRST(parent_ids);
12786 
12787 		error = got_worktree_histedit_merge_files(&merged_paths,
12788 		    worktree, fileindex, &pid->id, hle->commit_id, repo,
12789 		    update_progress, &upa, check_cancelled, NULL);
12790 		if (error)
12791 			goto done;
12792 		got_object_commit_close(commit);
12793 		commit = NULL;
12794 
12795 		print_merge_progress_stats(&upa);
12796 		if (upa.conflicts > 0 || upa.missing > 0 ||
12797 		    upa.not_deleted > 0 || upa.unversioned > 0) {
12798 			if (upa.conflicts > 0) {
12799 				error = show_rebase_merge_conflict(
12800 				    hle->commit_id, repo);
12801 				if (error)
12802 					goto done;
12803 			}
12804 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12805 			break;
12806 		}
12807 
12808 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
12809 			char *id_str;
12810 			error = got_object_id_str(&id_str, hle->commit_id);
12811 			if (error)
12812 				goto done;
12813 			printf("Stopping histedit for amending commit %s\n",
12814 			    id_str);
12815 			free(id_str);
12816 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12817 			error = got_worktree_histedit_postpone(worktree,
12818 			    fileindex);
12819 			goto done;
12820 		}
12821 
12822 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
12823 			error = histedit_skip_commit(hle, worktree, repo);
12824 			if (error)
12825 				goto done;
12826 			continue;
12827 		}
12828 
12829 		error = histedit_commit(&merged_paths, worktree, fileindex,
12830 		    tmp_branch, hle, committer, allow_conflict, repo);
12831 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12832 		if (error)
12833 			goto done;
12834 	}
12835 
12836 	if (upa.conflicts > 0 || upa.missing > 0 ||
12837 	    upa.not_deleted > 0 || upa.unversioned > 0) {
12838 		error = got_worktree_histedit_postpone(worktree, fileindex);
12839 		if (error)
12840 			goto done;
12841 		if (upa.conflicts > 0 && upa.missing == 0 &&
12842 		    upa.not_deleted == 0 && upa.unversioned == 0) {
12843 			error = got_error_msg(GOT_ERR_CONFLICTS,
12844 			    "conflicts must be resolved before histedit "
12845 			    "can continue");
12846 		} else if (upa.conflicts > 0) {
12847 			error = got_error_msg(GOT_ERR_CONFLICTS,
12848 			    "conflicts must be resolved before histedit "
12849 			    "can continue; changes destined for some "
12850 			    "files were not yet merged and should be "
12851 			    "merged manually if required before the "
12852 			    "histedit operation is continued");
12853 		} else {
12854 			error = got_error_msg(GOT_ERR_CONFLICTS,
12855 			    "changes destined for some files were not "
12856 			    "yet merged and should be merged manually "
12857 			    "if required before the histedit operation "
12858 			    "is continued");
12859 		}
12860 	} else
12861 		error = histedit_complete(worktree, fileindex, tmp_branch,
12862 		    branch, repo);
12863 done:
12864 	free(cwd);
12865 	free(committer);
12866 	free(gitconfig_path);
12867 	got_object_id_queue_free(&commits);
12868 	histedit_free_list(&histedit_cmds);
12869 	free(head_commit_id);
12870 	free(base_commit_id);
12871 	free(resume_commit_id);
12872 	if (commit)
12873 		got_object_commit_close(commit);
12874 	if (branch)
12875 		got_ref_close(branch);
12876 	if (tmp_branch)
12877 		got_ref_close(tmp_branch);
12878 	if (worktree)
12879 		got_worktree_close(worktree);
12880 	if (repo) {
12881 		const struct got_error *close_err = got_repo_close(repo);
12882 		if (error == NULL)
12883 			error = close_err;
12884 	}
12885 	if (pack_fds) {
12886 		const struct got_error *pack_err =
12887 		    got_repo_pack_fds_close(pack_fds);
12888 		if (error == NULL)
12889 			error = pack_err;
12890 	}
12891 	return error;
12892 }
12893 
12894 __dead static void
12895 usage_integrate(void)
12896 {
12897 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
12898 	exit(1);
12899 }
12900 
12901 static const struct got_error *
12902 cmd_integrate(int argc, char *argv[])
12903 {
12904 	const struct got_error *error = NULL;
12905 	struct got_repository *repo = NULL;
12906 	struct got_worktree *worktree = NULL;
12907 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
12908 	const char *branch_arg = NULL;
12909 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
12910 	struct got_fileindex *fileindex = NULL;
12911 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
12912 	int ch;
12913 	struct got_update_progress_arg upa;
12914 	int *pack_fds = NULL;
12915 
12916 #ifndef PROFILE
12917 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12918 	    "unveil", NULL) == -1)
12919 		err(1, "pledge");
12920 #endif
12921 
12922 	while ((ch = getopt(argc, argv, "")) != -1) {
12923 		switch (ch) {
12924 		default:
12925 			usage_integrate();
12926 			/* NOTREACHED */
12927 		}
12928 	}
12929 
12930 	argc -= optind;
12931 	argv += optind;
12932 
12933 	if (argc != 1)
12934 		usage_integrate();
12935 	branch_arg = argv[0];
12936 
12937 	cwd = getcwd(NULL, 0);
12938 	if (cwd == NULL) {
12939 		error = got_error_from_errno("getcwd");
12940 		goto done;
12941 	}
12942 
12943 	error = got_repo_pack_fds_open(&pack_fds);
12944 	if (error != NULL)
12945 		goto done;
12946 
12947 	error = got_worktree_open(&worktree, cwd);
12948 	if (error) {
12949 		if (error->code == GOT_ERR_NOT_WORKTREE)
12950 			error = wrap_not_worktree_error(error, "integrate",
12951 			    cwd);
12952 		goto done;
12953 	}
12954 
12955 	error = check_rebase_or_histedit_in_progress(worktree);
12956 	if (error)
12957 		goto done;
12958 
12959 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12960 	    NULL, pack_fds);
12961 	if (error != NULL)
12962 		goto done;
12963 
12964 	error = apply_unveil(got_repo_get_path(repo), 0,
12965 	    got_worktree_get_root_path(worktree));
12966 	if (error)
12967 		goto done;
12968 
12969 	error = check_merge_in_progress(worktree, repo);
12970 	if (error)
12971 		goto done;
12972 
12973 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
12974 		error = got_error_from_errno("asprintf");
12975 		goto done;
12976 	}
12977 
12978 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
12979 	    &base_branch_ref, worktree, refname, repo);
12980 	if (error)
12981 		goto done;
12982 
12983 	refname = strdup(got_ref_get_name(branch_ref));
12984 	if (refname == NULL) {
12985 		error = got_error_from_errno("strdup");
12986 		got_worktree_integrate_abort(worktree, fileindex, repo,
12987 		    branch_ref, base_branch_ref);
12988 		goto done;
12989 	}
12990 	base_refname = strdup(got_ref_get_name(base_branch_ref));
12991 	if (base_refname == NULL) {
12992 		error = got_error_from_errno("strdup");
12993 		got_worktree_integrate_abort(worktree, fileindex, repo,
12994 		    branch_ref, base_branch_ref);
12995 		goto done;
12996 	}
12997 	if (strncmp(base_refname, "refs/heads/", 11) != 0) {
12998 		error = got_error(GOT_ERR_INTEGRATE_BRANCH);
12999 		got_worktree_integrate_abort(worktree, fileindex, repo,
13000 		    branch_ref, base_branch_ref);
13001 		goto done;
13002 	}
13003 
13004 	error = got_ref_resolve(&commit_id, repo, branch_ref);
13005 	if (error)
13006 		goto done;
13007 
13008 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
13009 	if (error)
13010 		goto done;
13011 
13012 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
13013 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
13014 		    "specified branch has already been integrated");
13015 		got_worktree_integrate_abort(worktree, fileindex, repo,
13016 		    branch_ref, base_branch_ref);
13017 		goto done;
13018 	}
13019 
13020 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
13021 	if (error) {
13022 		if (error->code == GOT_ERR_ANCESTRY)
13023 			error = got_error(GOT_ERR_REBASE_REQUIRED);
13024 		got_worktree_integrate_abort(worktree, fileindex, repo,
13025 		    branch_ref, base_branch_ref);
13026 		goto done;
13027 	}
13028 
13029 	memset(&upa, 0, sizeof(upa));
13030 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
13031 	    branch_ref, base_branch_ref, update_progress, &upa,
13032 	    check_cancelled, NULL);
13033 	if (error)
13034 		goto done;
13035 
13036 	printf("Integrated %s into %s\n", refname, base_refname);
13037 	print_update_progress_stats(&upa);
13038 done:
13039 	if (repo) {
13040 		const struct got_error *close_err = got_repo_close(repo);
13041 		if (error == NULL)
13042 			error = close_err;
13043 	}
13044 	if (worktree)
13045 		got_worktree_close(worktree);
13046 	if (pack_fds) {
13047 		const struct got_error *pack_err =
13048 		    got_repo_pack_fds_close(pack_fds);
13049 		if (error == NULL)
13050 			error = pack_err;
13051 	}
13052 	free(cwd);
13053 	free(base_commit_id);
13054 	free(commit_id);
13055 	free(refname);
13056 	free(base_refname);
13057 	return error;
13058 }
13059 
13060 __dead static void
13061 usage_merge(void)
13062 {
13063 	fprintf(stderr, "usage: %s merge [-aCcn] [branch]\n", getprogname());
13064 	exit(1);
13065 }
13066 
13067 static const struct got_error *
13068 cmd_merge(int argc, char *argv[])
13069 {
13070 	const struct got_error *error = NULL;
13071 	struct got_worktree *worktree = NULL;
13072 	struct got_repository *repo = NULL;
13073 	struct got_fileindex *fileindex = NULL;
13074 	char *cwd = NULL, *id_str = NULL, *author = NULL;
13075 	char *gitconfig_path = NULL;
13076 	struct got_reference *branch = NULL, *wt_branch = NULL;
13077 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
13078 	struct got_object_id *wt_branch_tip = NULL;
13079 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
13080 	int allow_conflict = 0, interrupt_merge = 0;
13081 	struct got_update_progress_arg upa;
13082 	struct got_object_id *merge_commit_id = NULL;
13083 	char *branch_name = NULL;
13084 	int *pack_fds = NULL;
13085 
13086 	memset(&upa, 0, sizeof(upa));
13087 
13088 #ifndef PROFILE
13089 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13090 	    "unveil", NULL) == -1)
13091 		err(1, "pledge");
13092 #endif
13093 
13094 	while ((ch = getopt(argc, argv, "aCcn")) != -1) {
13095 		switch (ch) {
13096 		case 'a':
13097 			abort_merge = 1;
13098 			break;
13099 		case 'C':
13100 			allow_conflict = 1;
13101 		case 'c':
13102 			continue_merge = 1;
13103 			break;
13104 		case 'n':
13105 			interrupt_merge = 1;
13106 			break;
13107 		default:
13108 			usage_merge();
13109 			/* NOTREACHED */
13110 		}
13111 	}
13112 
13113 	argc -= optind;
13114 	argv += optind;
13115 
13116 	if (allow_conflict) {
13117 		if (abort_merge)
13118 			option_conflict('a', 'C');
13119 		if (!continue_merge)
13120 			errx(1, "-C option requires -c");
13121 	}
13122 	if (abort_merge && continue_merge)
13123 		option_conflict('a', 'c');
13124 	if (abort_merge || continue_merge) {
13125 		if (argc != 0)
13126 			usage_merge();
13127 	} else if (argc != 1)
13128 		usage_merge();
13129 
13130 	cwd = getcwd(NULL, 0);
13131 	if (cwd == NULL) {
13132 		error = got_error_from_errno("getcwd");
13133 		goto done;
13134 	}
13135 
13136 	error = got_repo_pack_fds_open(&pack_fds);
13137 	if (error != NULL)
13138 		goto done;
13139 
13140 	error = got_worktree_open(&worktree, cwd);
13141 	if (error) {
13142 		if (error->code == GOT_ERR_NOT_WORKTREE)
13143 			error = wrap_not_worktree_error(error,
13144 			    "merge", cwd);
13145 		goto done;
13146 	}
13147 
13148 	error = get_gitconfig_path(&gitconfig_path);
13149 	if (error)
13150 		goto done;
13151 	error = got_repo_open(&repo,
13152 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
13153 	    gitconfig_path, pack_fds);
13154 	if (error != NULL)
13155 		goto done;
13156 
13157 	if (worktree != NULL) {
13158 		error = worktree_has_logmsg_ref("merge", worktree, repo);
13159 		if (error)
13160 			goto done;
13161 	}
13162 
13163 	error = apply_unveil(got_repo_get_path(repo), 0,
13164 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
13165 	if (error)
13166 		goto done;
13167 
13168 	error = check_rebase_or_histedit_in_progress(worktree);
13169 	if (error)
13170 		goto done;
13171 
13172 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
13173 	    repo);
13174 	if (error)
13175 		goto done;
13176 
13177 	if (abort_merge) {
13178 		if (!merge_in_progress) {
13179 			error = got_error(GOT_ERR_NOT_MERGING);
13180 			goto done;
13181 		}
13182 		error = got_worktree_merge_continue(&branch_name,
13183 		    &branch_tip, &fileindex, worktree, repo);
13184 		if (error)
13185 			goto done;
13186 		error = got_worktree_merge_abort(worktree, fileindex, repo,
13187 		    abort_progress, &upa);
13188 		if (error)
13189 			goto done;
13190 		printf("Merge of %s aborted\n", branch_name);
13191 		goto done; /* nothing else to do */
13192 	}
13193 
13194 	error = get_author(&author, repo, worktree);
13195 	if (error)
13196 		goto done;
13197 
13198 	if (continue_merge) {
13199 		if (!merge_in_progress) {
13200 			error = got_error(GOT_ERR_NOT_MERGING);
13201 			goto done;
13202 		}
13203 		error = got_worktree_merge_continue(&branch_name,
13204 		    &branch_tip, &fileindex, worktree, repo);
13205 		if (error)
13206 			goto done;
13207 	} else {
13208 		error = got_ref_open(&branch, repo, argv[0], 0);
13209 		if (error != NULL)
13210 			goto done;
13211 		branch_name = strdup(got_ref_get_name(branch));
13212 		if (branch_name == NULL) {
13213 			error = got_error_from_errno("strdup");
13214 			goto done;
13215 		}
13216 		error = got_ref_resolve(&branch_tip, repo, branch);
13217 		if (error)
13218 			goto done;
13219 	}
13220 
13221 	error = got_ref_open(&wt_branch, repo,
13222 	    got_worktree_get_head_ref_name(worktree), 0);
13223 	if (error)
13224 		goto done;
13225 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
13226 	if (error)
13227 		goto done;
13228 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
13229 	    wt_branch_tip, branch_tip, 0, repo,
13230 	    check_cancelled, NULL);
13231 	if (error && error->code != GOT_ERR_ANCESTRY)
13232 		goto done;
13233 
13234 	if (!continue_merge) {
13235 		error = check_path_prefix(wt_branch_tip, branch_tip,
13236 		    got_worktree_get_path_prefix(worktree),
13237 		    GOT_ERR_MERGE_PATH, repo);
13238 		if (error)
13239 			goto done;
13240 		if (yca_id) {
13241 			error = check_same_branch(wt_branch_tip, branch,
13242 			    yca_id, repo);
13243 			if (error) {
13244 				if (error->code != GOT_ERR_ANCESTRY)
13245 					goto done;
13246 				error = NULL;
13247 			} else {
13248 				static char msg[512];
13249 				snprintf(msg, sizeof(msg),
13250 				    "cannot create a merge commit because "
13251 				    "%s is based on %s; %s can be integrated "
13252 				    "with 'got integrate' instead", branch_name,
13253 				    got_worktree_get_head_ref_name(worktree),
13254 				    branch_name);
13255 				error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
13256 				goto done;
13257 			}
13258 		}
13259 		error = got_worktree_merge_prepare(&fileindex, worktree,
13260 		    branch, repo);
13261 		if (error)
13262 			goto done;
13263 
13264 		error = got_worktree_merge_branch(worktree, fileindex,
13265 		    yca_id, branch_tip, repo, update_progress, &upa,
13266 		    check_cancelled, NULL);
13267 		if (error)
13268 			goto done;
13269 		print_merge_progress_stats(&upa);
13270 		if (!upa.did_something) {
13271 			error = got_worktree_merge_abort(worktree, fileindex,
13272 			    repo, abort_progress, &upa);
13273 			if (error)
13274 				goto done;
13275 			printf("Already up-to-date\n");
13276 			goto done;
13277 		}
13278 	}
13279 
13280 	if (interrupt_merge) {
13281 		error = got_worktree_merge_postpone(worktree, fileindex);
13282 		if (error)
13283 			goto done;
13284 		printf("Merge of %s interrupted on request\n", branch_name);
13285 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
13286 	    upa.not_deleted > 0 || upa.unversioned > 0) {
13287 		error = got_worktree_merge_postpone(worktree, fileindex);
13288 		if (error)
13289 			goto done;
13290 		if (upa.conflicts > 0 && upa.missing == 0 &&
13291 		    upa.not_deleted == 0 && upa.unversioned == 0) {
13292 			error = got_error_msg(GOT_ERR_CONFLICTS,
13293 			    "conflicts must be resolved before merging "
13294 			    "can continue");
13295 		} else if (upa.conflicts > 0) {
13296 			error = got_error_msg(GOT_ERR_CONFLICTS,
13297 			    "conflicts must be resolved before merging "
13298 			    "can continue; changes destined for some "
13299 			    "files were not yet merged and "
13300 			    "should be merged manually if required before the "
13301 			    "merge operation is continued");
13302 		} else {
13303 			error = got_error_msg(GOT_ERR_CONFLICTS,
13304 			    "changes destined for some "
13305 			    "files were not yet merged and should be "
13306 			    "merged manually if required before the "
13307 			    "merge operation is continued");
13308 		}
13309 		goto done;
13310 	} else {
13311 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
13312 		    fileindex, author, NULL, 1, branch_tip, branch_name,
13313 		    allow_conflict, repo, continue_merge ? print_status : NULL,
13314 		    NULL);
13315 		if (error)
13316 			goto done;
13317 		error = got_worktree_merge_complete(worktree, fileindex, repo);
13318 		if (error)
13319 			goto done;
13320 		error = got_object_id_str(&id_str, merge_commit_id);
13321 		if (error)
13322 			goto done;
13323 		printf("Merged %s into %s: %s\n", branch_name,
13324 		    got_worktree_get_head_ref_name(worktree),
13325 		    id_str);
13326 
13327 	}
13328 done:
13329 	free(gitconfig_path);
13330 	free(id_str);
13331 	free(merge_commit_id);
13332 	free(author);
13333 	free(branch_tip);
13334 	free(branch_name);
13335 	free(yca_id);
13336 	if (branch)
13337 		got_ref_close(branch);
13338 	if (wt_branch)
13339 		got_ref_close(wt_branch);
13340 	if (worktree)
13341 		got_worktree_close(worktree);
13342 	if (repo) {
13343 		const struct got_error *close_err = got_repo_close(repo);
13344 		if (error == NULL)
13345 			error = close_err;
13346 	}
13347 	if (pack_fds) {
13348 		const struct got_error *pack_err =
13349 		    got_repo_pack_fds_close(pack_fds);
13350 		if (error == NULL)
13351 			error = pack_err;
13352 	}
13353 	return error;
13354 }
13355 
13356 __dead static void
13357 usage_stage(void)
13358 {
13359 	fprintf(stderr, "usage: %s stage [-lpS] [-F response-script] "
13360 	    "[path ...]\n", getprogname());
13361 	exit(1);
13362 }
13363 
13364 static const struct got_error *
13365 print_stage(void *arg, unsigned char status, unsigned char staged_status,
13366     const char *path, struct got_object_id *blob_id,
13367     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
13368     int dirfd, const char *de_name)
13369 {
13370 	const struct got_error *err = NULL;
13371 	char *id_str = NULL;
13372 
13373 	if (staged_status != GOT_STATUS_ADD &&
13374 	    staged_status != GOT_STATUS_MODIFY &&
13375 	    staged_status != GOT_STATUS_DELETE)
13376 		return NULL;
13377 
13378 	if (staged_status == GOT_STATUS_ADD ||
13379 	    staged_status == GOT_STATUS_MODIFY)
13380 		err = got_object_id_str(&id_str, staged_blob_id);
13381 	else
13382 		err = got_object_id_str(&id_str, blob_id);
13383 	if (err)
13384 		return err;
13385 
13386 	printf("%s %c %s\n", id_str, staged_status, path);
13387 	free(id_str);
13388 	return NULL;
13389 }
13390 
13391 static const struct got_error *
13392 cmd_stage(int argc, char *argv[])
13393 {
13394 	const struct got_error *error = NULL;
13395 	struct got_repository *repo = NULL;
13396 	struct got_worktree *worktree = NULL;
13397 	char *cwd = NULL;
13398 	struct got_pathlist_head paths;
13399 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
13400 	FILE *patch_script_file = NULL;
13401 	const char *patch_script_path = NULL;
13402 	struct choose_patch_arg cpa;
13403 	int *pack_fds = NULL;
13404 
13405 	TAILQ_INIT(&paths);
13406 
13407 #ifndef PROFILE
13408 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13409 	    "unveil", NULL) == -1)
13410 		err(1, "pledge");
13411 #endif
13412 
13413 	while ((ch = getopt(argc, argv, "F:lpS")) != -1) {
13414 		switch (ch) {
13415 		case 'F':
13416 			patch_script_path = optarg;
13417 			break;
13418 		case 'l':
13419 			list_stage = 1;
13420 			break;
13421 		case 'p':
13422 			pflag = 1;
13423 			break;
13424 		case 'S':
13425 			allow_bad_symlinks = 1;
13426 			break;
13427 		default:
13428 			usage_stage();
13429 			/* NOTREACHED */
13430 		}
13431 	}
13432 
13433 	argc -= optind;
13434 	argv += optind;
13435 
13436 	if (list_stage && (pflag || patch_script_path))
13437 		errx(1, "-l option cannot be used with other options");
13438 	if (patch_script_path && !pflag)
13439 		errx(1, "-F option can only be used together with -p option");
13440 
13441 	cwd = getcwd(NULL, 0);
13442 	if (cwd == NULL) {
13443 		error = got_error_from_errno("getcwd");
13444 		goto done;
13445 	}
13446 
13447 	error = got_repo_pack_fds_open(&pack_fds);
13448 	if (error != NULL)
13449 		goto done;
13450 
13451 	error = got_worktree_open(&worktree, cwd);
13452 	if (error) {
13453 		if (error->code == GOT_ERR_NOT_WORKTREE)
13454 			error = wrap_not_worktree_error(error, "stage", cwd);
13455 		goto done;
13456 	}
13457 
13458 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13459 	    NULL, pack_fds);
13460 	if (error != NULL)
13461 		goto done;
13462 
13463 	if (patch_script_path) {
13464 		patch_script_file = fopen(patch_script_path, "re");
13465 		if (patch_script_file == NULL) {
13466 			error = got_error_from_errno2("fopen",
13467 			    patch_script_path);
13468 			goto done;
13469 		}
13470 	}
13471 	error = apply_unveil(got_repo_get_path(repo), 0,
13472 	    got_worktree_get_root_path(worktree));
13473 	if (error)
13474 		goto done;
13475 
13476 	error = check_merge_in_progress(worktree, repo);
13477 	if (error)
13478 		goto done;
13479 
13480 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13481 	if (error)
13482 		goto done;
13483 
13484 	if (list_stage)
13485 		error = got_worktree_status(worktree, &paths, repo, 0,
13486 		    print_stage, NULL, check_cancelled, NULL);
13487 	else {
13488 		cpa.patch_script_file = patch_script_file;
13489 		cpa.action = "stage";
13490 		error = got_worktree_stage(worktree, &paths,
13491 		    pflag ? NULL : print_status, NULL,
13492 		    pflag ? choose_patch : NULL, &cpa,
13493 		    allow_bad_symlinks, repo);
13494 	}
13495 done:
13496 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13497 	    error == NULL)
13498 		error = got_error_from_errno2("fclose", patch_script_path);
13499 	if (repo) {
13500 		const struct got_error *close_err = got_repo_close(repo);
13501 		if (error == NULL)
13502 			error = close_err;
13503 	}
13504 	if (worktree)
13505 		got_worktree_close(worktree);
13506 	if (pack_fds) {
13507 		const struct got_error *pack_err =
13508 		    got_repo_pack_fds_close(pack_fds);
13509 		if (error == NULL)
13510 			error = pack_err;
13511 	}
13512 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13513 	free(cwd);
13514 	return error;
13515 }
13516 
13517 __dead static void
13518 usage_unstage(void)
13519 {
13520 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
13521 	    "[path ...]\n", getprogname());
13522 	exit(1);
13523 }
13524 
13525 
13526 static const struct got_error *
13527 cmd_unstage(int argc, char *argv[])
13528 {
13529 	const struct got_error *error = NULL;
13530 	struct got_repository *repo = NULL;
13531 	struct got_worktree *worktree = NULL;
13532 	char *cwd = NULL;
13533 	struct got_pathlist_head paths;
13534 	int ch, pflag = 0;
13535 	struct got_update_progress_arg upa;
13536 	FILE *patch_script_file = NULL;
13537 	const char *patch_script_path = NULL;
13538 	struct choose_patch_arg cpa;
13539 	int *pack_fds = NULL;
13540 
13541 	TAILQ_INIT(&paths);
13542 
13543 #ifndef PROFILE
13544 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13545 	    "unveil", NULL) == -1)
13546 		err(1, "pledge");
13547 #endif
13548 
13549 	while ((ch = getopt(argc, argv, "F:p")) != -1) {
13550 		switch (ch) {
13551 		case 'F':
13552 			patch_script_path = optarg;
13553 			break;
13554 		case 'p':
13555 			pflag = 1;
13556 			break;
13557 		default:
13558 			usage_unstage();
13559 			/* NOTREACHED */
13560 		}
13561 	}
13562 
13563 	argc -= optind;
13564 	argv += optind;
13565 
13566 	if (patch_script_path && !pflag)
13567 		errx(1, "-F option can only be used together with -p option");
13568 
13569 	cwd = getcwd(NULL, 0);
13570 	if (cwd == NULL) {
13571 		error = got_error_from_errno("getcwd");
13572 		goto done;
13573 	}
13574 
13575 	error = got_repo_pack_fds_open(&pack_fds);
13576 	if (error != NULL)
13577 		goto done;
13578 
13579 	error = got_worktree_open(&worktree, cwd);
13580 	if (error) {
13581 		if (error->code == GOT_ERR_NOT_WORKTREE)
13582 			error = wrap_not_worktree_error(error, "unstage", cwd);
13583 		goto done;
13584 	}
13585 
13586 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13587 	    NULL, pack_fds);
13588 	if (error != NULL)
13589 		goto done;
13590 
13591 	if (patch_script_path) {
13592 		patch_script_file = fopen(patch_script_path, "re");
13593 		if (patch_script_file == NULL) {
13594 			error = got_error_from_errno2("fopen",
13595 			    patch_script_path);
13596 			goto done;
13597 		}
13598 	}
13599 
13600 	error = apply_unveil(got_repo_get_path(repo), 0,
13601 	    got_worktree_get_root_path(worktree));
13602 	if (error)
13603 		goto done;
13604 
13605 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13606 	if (error)
13607 		goto done;
13608 
13609 	cpa.patch_script_file = patch_script_file;
13610 	cpa.action = "unstage";
13611 	memset(&upa, 0, sizeof(upa));
13612 	error = got_worktree_unstage(worktree, &paths, update_progress,
13613 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
13614 	if (!error)
13615 		print_merge_progress_stats(&upa);
13616 done:
13617 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13618 	    error == NULL)
13619 		error = got_error_from_errno2("fclose", patch_script_path);
13620 	if (repo) {
13621 		const struct got_error *close_err = got_repo_close(repo);
13622 		if (error == NULL)
13623 			error = close_err;
13624 	}
13625 	if (worktree)
13626 		got_worktree_close(worktree);
13627 	if (pack_fds) {
13628 		const struct got_error *pack_err =
13629 		    got_repo_pack_fds_close(pack_fds);
13630 		if (error == NULL)
13631 			error = pack_err;
13632 	}
13633 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13634 	free(cwd);
13635 	return error;
13636 }
13637 
13638 __dead static void
13639 usage_cat(void)
13640 {
13641 	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
13642 	    "arg ...\n", getprogname());
13643 	exit(1);
13644 }
13645 
13646 static const struct got_error *
13647 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13648 {
13649 	const struct got_error *err;
13650 	struct got_blob_object *blob;
13651 	int fd = -1;
13652 
13653 	fd = got_opentempfd();
13654 	if (fd == -1)
13655 		return got_error_from_errno("got_opentempfd");
13656 
13657 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
13658 	if (err)
13659 		goto done;
13660 
13661 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
13662 done:
13663 	if (fd != -1 && close(fd) == -1 && err == NULL)
13664 		err = got_error_from_errno("close");
13665 	if (blob)
13666 		got_object_blob_close(blob);
13667 	return err;
13668 }
13669 
13670 static const struct got_error *
13671 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13672 {
13673 	const struct got_error *err;
13674 	struct got_tree_object *tree;
13675 	int nentries, i;
13676 
13677 	err = got_object_open_as_tree(&tree, repo, id);
13678 	if (err)
13679 		return err;
13680 
13681 	nentries = got_object_tree_get_nentries(tree);
13682 	for (i = 0; i < nentries; i++) {
13683 		struct got_tree_entry *te;
13684 		char *id_str;
13685 		if (sigint_received || sigpipe_received)
13686 			break;
13687 		te = got_object_tree_get_entry(tree, i);
13688 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
13689 		if (err)
13690 			break;
13691 		fprintf(outfile, "%s %.7o %s\n", id_str,
13692 		    got_tree_entry_get_mode(te),
13693 		    got_tree_entry_get_name(te));
13694 		free(id_str);
13695 	}
13696 
13697 	got_object_tree_close(tree);
13698 	return err;
13699 }
13700 
13701 static const struct got_error *
13702 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13703 {
13704 	const struct got_error *err;
13705 	struct got_commit_object *commit;
13706 	const struct got_object_id_queue *parent_ids;
13707 	struct got_object_qid *pid;
13708 	char *id_str = NULL;
13709 	const char *logmsg = NULL;
13710 	char gmtoff[6];
13711 
13712 	err = got_object_open_as_commit(&commit, repo, id);
13713 	if (err)
13714 		return err;
13715 
13716 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
13717 	if (err)
13718 		goto done;
13719 
13720 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
13721 	parent_ids = got_object_commit_get_parent_ids(commit);
13722 	fprintf(outfile, "numparents %d\n",
13723 	    got_object_commit_get_nparents(commit));
13724 	STAILQ_FOREACH(pid, parent_ids, entry) {
13725 		char *pid_str;
13726 		err = got_object_id_str(&pid_str, &pid->id);
13727 		if (err)
13728 			goto done;
13729 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
13730 		free(pid_str);
13731 	}
13732 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13733 	    got_object_commit_get_author_gmtoff(commit));
13734 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
13735 	    got_object_commit_get_author(commit),
13736 	    (long long)got_object_commit_get_author_time(commit),
13737 	    gmtoff);
13738 
13739 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13740 	    got_object_commit_get_committer_gmtoff(commit));
13741 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
13742 	    got_object_commit_get_committer(commit),
13743 	    (long long)got_object_commit_get_committer_time(commit),
13744 	    gmtoff);
13745 
13746 	logmsg = got_object_commit_get_logmsg_raw(commit);
13747 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
13748 	fprintf(outfile, "%s", logmsg);
13749 done:
13750 	free(id_str);
13751 	got_object_commit_close(commit);
13752 	return err;
13753 }
13754 
13755 static const struct got_error *
13756 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13757 {
13758 	const struct got_error *err;
13759 	struct got_tag_object *tag;
13760 	char *id_str = NULL;
13761 	const char *tagmsg = NULL;
13762 	char gmtoff[6];
13763 
13764 	err = got_object_open_as_tag(&tag, repo, id);
13765 	if (err)
13766 		return err;
13767 
13768 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
13769 	if (err)
13770 		goto done;
13771 
13772 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
13773 
13774 	switch (got_object_tag_get_object_type(tag)) {
13775 	case GOT_OBJ_TYPE_BLOB:
13776 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13777 		    GOT_OBJ_LABEL_BLOB);
13778 		break;
13779 	case GOT_OBJ_TYPE_TREE:
13780 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13781 		    GOT_OBJ_LABEL_TREE);
13782 		break;
13783 	case GOT_OBJ_TYPE_COMMIT:
13784 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13785 		    GOT_OBJ_LABEL_COMMIT);
13786 		break;
13787 	case GOT_OBJ_TYPE_TAG:
13788 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13789 		    GOT_OBJ_LABEL_TAG);
13790 		break;
13791 	default:
13792 		break;
13793 	}
13794 
13795 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
13796 	    got_object_tag_get_name(tag));
13797 
13798 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13799 	    got_object_tag_get_tagger_gmtoff(tag));
13800 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
13801 	    got_object_tag_get_tagger(tag),
13802 	    (long long)got_object_tag_get_tagger_time(tag),
13803 	    gmtoff);
13804 
13805 	tagmsg = got_object_tag_get_message(tag);
13806 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
13807 	fprintf(outfile, "%s", tagmsg);
13808 done:
13809 	free(id_str);
13810 	got_object_tag_close(tag);
13811 	return err;
13812 }
13813 
13814 static const struct got_error *
13815 cmd_cat(int argc, char *argv[])
13816 {
13817 	const struct got_error *error;
13818 	struct got_repository *repo = NULL;
13819 	struct got_worktree *worktree = NULL;
13820 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
13821 	const char *commit_id_str = NULL;
13822 	struct got_object_id *id = NULL, *commit_id = NULL;
13823 	struct got_commit_object *commit = NULL;
13824 	int ch, obj_type, i, force_path = 0;
13825 	struct got_reflist_head refs;
13826 	int *pack_fds = NULL;
13827 
13828 	TAILQ_INIT(&refs);
13829 
13830 #ifndef PROFILE
13831 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
13832 	    NULL) == -1)
13833 		err(1, "pledge");
13834 #endif
13835 
13836 	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
13837 		switch (ch) {
13838 		case 'c':
13839 			commit_id_str = optarg;
13840 			break;
13841 		case 'P':
13842 			force_path = 1;
13843 			break;
13844 		case 'r':
13845 			repo_path = realpath(optarg, NULL);
13846 			if (repo_path == NULL)
13847 				return got_error_from_errno2("realpath",
13848 				    optarg);
13849 			got_path_strip_trailing_slashes(repo_path);
13850 			break;
13851 		default:
13852 			usage_cat();
13853 			/* NOTREACHED */
13854 		}
13855 	}
13856 
13857 	argc -= optind;
13858 	argv += optind;
13859 
13860 	cwd = getcwd(NULL, 0);
13861 	if (cwd == NULL) {
13862 		error = got_error_from_errno("getcwd");
13863 		goto done;
13864 	}
13865 
13866 	error = got_repo_pack_fds_open(&pack_fds);
13867 	if (error != NULL)
13868 		goto done;
13869 
13870 	if (repo_path == NULL) {
13871 		error = got_worktree_open(&worktree, cwd);
13872 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
13873 			goto done;
13874 		if (worktree) {
13875 			repo_path = strdup(
13876 			    got_worktree_get_repo_path(worktree));
13877 			if (repo_path == NULL) {
13878 				error = got_error_from_errno("strdup");
13879 				goto done;
13880 			}
13881 
13882 			/* Release work tree lock. */
13883 			got_worktree_close(worktree);
13884 			worktree = NULL;
13885 		}
13886 	}
13887 
13888 	if (repo_path == NULL) {
13889 		repo_path = strdup(cwd);
13890 		if (repo_path == NULL)
13891 			return got_error_from_errno("strdup");
13892 	}
13893 
13894 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
13895 	free(repo_path);
13896 	if (error != NULL)
13897 		goto done;
13898 
13899 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
13900 	if (error)
13901 		goto done;
13902 
13903 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
13904 	if (error)
13905 		goto done;
13906 
13907 	if (commit_id_str == NULL)
13908 		commit_id_str = GOT_REF_HEAD;
13909 	error = got_repo_match_object_id(&commit_id, NULL,
13910 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
13911 	if (error)
13912 		goto done;
13913 
13914 	error = got_object_open_as_commit(&commit, repo, commit_id);
13915 	if (error)
13916 		goto done;
13917 
13918 	for (i = 0; i < argc; i++) {
13919 		if (force_path) {
13920 			error = got_object_id_by_path(&id, repo, commit,
13921 			    argv[i]);
13922 			if (error)
13923 				break;
13924 		} else {
13925 			error = got_repo_match_object_id(&id, &label, argv[i],
13926 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
13927 			    repo);
13928 			if (error) {
13929 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
13930 				    error->code != GOT_ERR_NOT_REF)
13931 					break;
13932 				error = got_object_id_by_path(&id, repo,
13933 				    commit, argv[i]);
13934 				if (error)
13935 					break;
13936 			}
13937 		}
13938 
13939 		error = got_object_get_type(&obj_type, repo, id);
13940 		if (error)
13941 			break;
13942 
13943 		switch (obj_type) {
13944 		case GOT_OBJ_TYPE_BLOB:
13945 			error = cat_blob(id, repo, stdout);
13946 			break;
13947 		case GOT_OBJ_TYPE_TREE:
13948 			error = cat_tree(id, repo, stdout);
13949 			break;
13950 		case GOT_OBJ_TYPE_COMMIT:
13951 			error = cat_commit(id, repo, stdout);
13952 			break;
13953 		case GOT_OBJ_TYPE_TAG:
13954 			error = cat_tag(id, repo, stdout);
13955 			break;
13956 		default:
13957 			error = got_error(GOT_ERR_OBJ_TYPE);
13958 			break;
13959 		}
13960 		if (error)
13961 			break;
13962 		free(label);
13963 		label = NULL;
13964 		free(id);
13965 		id = NULL;
13966 	}
13967 done:
13968 	free(label);
13969 	free(id);
13970 	free(commit_id);
13971 	if (commit)
13972 		got_object_commit_close(commit);
13973 	if (worktree)
13974 		got_worktree_close(worktree);
13975 	if (repo) {
13976 		const struct got_error *close_err = got_repo_close(repo);
13977 		if (error == NULL)
13978 			error = close_err;
13979 	}
13980 	if (pack_fds) {
13981 		const struct got_error *pack_err =
13982 		    got_repo_pack_fds_close(pack_fds);
13983 		if (error == NULL)
13984 			error = pack_err;
13985 	}
13986 
13987 	got_ref_list_free(&refs);
13988 	return error;
13989 }
13990 
13991 __dead static void
13992 usage_info(void)
13993 {
13994 	fprintf(stderr, "usage: %s info [path ...]\n",
13995 	    getprogname());
13996 	exit(1);
13997 }
13998 
13999 static const struct got_error *
14000 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
14001     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
14002     struct got_object_id *commit_id)
14003 {
14004 	const struct got_error *err = NULL;
14005 	char *id_str = NULL;
14006 	char datebuf[128];
14007 	struct tm mytm, *tm;
14008 	struct got_pathlist_head *paths = arg;
14009 	struct got_pathlist_entry *pe;
14010 
14011 	/*
14012 	 * Clear error indication from any of the path arguments which
14013 	 * would cause this file index entry to be displayed.
14014 	 */
14015 	TAILQ_FOREACH(pe, paths, entry) {
14016 		if (got_path_cmp(path, pe->path, strlen(path),
14017 		    pe->path_len) == 0 ||
14018 		    got_path_is_child(path, pe->path, pe->path_len))
14019 			pe->data = NULL; /* no error */
14020 	}
14021 
14022 	printf(GOT_COMMIT_SEP_STR);
14023 	if (S_ISLNK(mode))
14024 		printf("symlink: %s\n", path);
14025 	else if (S_ISREG(mode)) {
14026 		printf("file: %s\n", path);
14027 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
14028 	} else if (S_ISDIR(mode))
14029 		printf("directory: %s\n", path);
14030 	else
14031 		printf("something: %s\n", path);
14032 
14033 	tm = localtime_r(&mtime, &mytm);
14034 	if (tm == NULL)
14035 		return NULL;
14036 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
14037 		return got_error(GOT_ERR_NO_SPACE);
14038 	printf("timestamp: %s\n", datebuf);
14039 
14040 	if (blob_id) {
14041 		err = got_object_id_str(&id_str, blob_id);
14042 		if (err)
14043 			return err;
14044 		printf("based on blob: %s\n", id_str);
14045 		free(id_str);
14046 	}
14047 
14048 	if (staged_blob_id) {
14049 		err = got_object_id_str(&id_str, staged_blob_id);
14050 		if (err)
14051 			return err;
14052 		printf("based on staged blob: %s\n", id_str);
14053 		free(id_str);
14054 	}
14055 
14056 	if (commit_id) {
14057 		err = got_object_id_str(&id_str, commit_id);
14058 		if (err)
14059 			return err;
14060 		printf("based on commit: %s\n", id_str);
14061 		free(id_str);
14062 	}
14063 
14064 	return NULL;
14065 }
14066 
14067 static const struct got_error *
14068 cmd_info(int argc, char *argv[])
14069 {
14070 	const struct got_error *error = NULL;
14071 	struct got_worktree *worktree = NULL;
14072 	char *cwd = NULL, *id_str = NULL;
14073 	struct got_pathlist_head paths;
14074 	char *uuidstr = NULL;
14075 	int ch, show_files = 0;
14076 
14077 	TAILQ_INIT(&paths);
14078 
14079 #ifndef PROFILE
14080 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
14081 	    NULL) == -1)
14082 		err(1, "pledge");
14083 #endif
14084 
14085 	while ((ch = getopt(argc, argv, "")) != -1) {
14086 		switch (ch) {
14087 		default:
14088 			usage_info();
14089 			/* NOTREACHED */
14090 		}
14091 	}
14092 
14093 	argc -= optind;
14094 	argv += optind;
14095 
14096 	cwd = getcwd(NULL, 0);
14097 	if (cwd == NULL) {
14098 		error = got_error_from_errno("getcwd");
14099 		goto done;
14100 	}
14101 
14102 	error = got_worktree_open(&worktree, cwd);
14103 	if (error) {
14104 		if (error->code == GOT_ERR_NOT_WORKTREE)
14105 			error = wrap_not_worktree_error(error, "info", cwd);
14106 		goto done;
14107 	}
14108 
14109 #ifndef PROFILE
14110 	/* Remove "wpath cpath proc exec sendfd" promises. */
14111 	if (pledge("stdio rpath flock unveil", NULL) == -1)
14112 		err(1, "pledge");
14113 #endif
14114 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
14115 	if (error)
14116 		goto done;
14117 
14118 	if (argc >= 1) {
14119 		error = get_worktree_paths_from_argv(&paths, argc, argv,
14120 		    worktree);
14121 		if (error)
14122 			goto done;
14123 		show_files = 1;
14124 	}
14125 
14126 	error = got_object_id_str(&id_str,
14127 	    got_worktree_get_base_commit_id(worktree));
14128 	if (error)
14129 		goto done;
14130 
14131 	error = got_worktree_get_uuid(&uuidstr, worktree);
14132 	if (error)
14133 		goto done;
14134 
14135 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
14136 	printf("work tree base commit: %s\n", id_str);
14137 	printf("work tree path prefix: %s\n",
14138 	    got_worktree_get_path_prefix(worktree));
14139 	printf("work tree branch reference: %s\n",
14140 	    got_worktree_get_head_ref_name(worktree));
14141 	printf("work tree UUID: %s\n", uuidstr);
14142 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
14143 
14144 	if (show_files) {
14145 		struct got_pathlist_entry *pe;
14146 		TAILQ_FOREACH(pe, &paths, entry) {
14147 			if (pe->path_len == 0)
14148 				continue;
14149 			/*
14150 			 * Assume this path will fail. This will be corrected
14151 			 * in print_path_info() in case the path does suceeed.
14152 			 */
14153 			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
14154 		}
14155 		error = got_worktree_path_info(worktree, &paths,
14156 		    print_path_info, &paths, check_cancelled, NULL);
14157 		if (error)
14158 			goto done;
14159 		TAILQ_FOREACH(pe, &paths, entry) {
14160 			if (pe->data != NULL) {
14161 				const struct got_error *perr;
14162 
14163 				perr = pe->data;
14164 				error = got_error_fmt(perr->code, "%s",
14165 				    pe->path);
14166 				break;
14167 			}
14168 		}
14169 	}
14170 done:
14171 	if (worktree)
14172 		got_worktree_close(worktree);
14173 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
14174 	free(cwd);
14175 	free(id_str);
14176 	free(uuidstr);
14177 	return error;
14178 }