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 #include "got_keyword.h"
65 
66 #ifndef nitems
67 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
68 #endif
69 
70 static volatile sig_atomic_t sigint_received;
71 static volatile sig_atomic_t sigpipe_received;
72 
73 static void
74 catch_sigint(int signo)
75 {
76 	sigint_received = 1;
77 }
78 
79 static void
80 catch_sigpipe(int signo)
81 {
82 	sigpipe_received = 1;
83 }
84 
85 
86 struct got_cmd {
87 	const char	*cmd_name;
88 	const struct got_error *(*cmd_main)(int, char *[]);
89 	void		(*cmd_usage)(void);
90 	const char	*cmd_alias;
91 };
92 
93 __dead static void	usage(int, int);
94 __dead static void	usage_import(void);
95 __dead static void	usage_clone(void);
96 __dead static void	usage_fetch(void);
97 __dead static void	usage_checkout(void);
98 __dead static void	usage_update(void);
99 __dead static void	usage_log(void);
100 __dead static void	usage_diff(void);
101 __dead static void	usage_blame(void);
102 __dead static void	usage_tree(void);
103 __dead static void	usage_status(void);
104 __dead static void	usage_ref(void);
105 __dead static void	usage_branch(void);
106 __dead static void	usage_tag(void);
107 __dead static void	usage_add(void);
108 __dead static void	usage_remove(void);
109 __dead static void	usage_patch(void);
110 __dead static void	usage_revert(void);
111 __dead static void	usage_commit(void);
112 __dead static void	usage_send(void);
113 __dead static void	usage_cherrypick(void);
114 __dead static void	usage_backout(void);
115 __dead static void	usage_rebase(void);
116 __dead static void	usage_histedit(void);
117 __dead static void	usage_integrate(void);
118 __dead static void	usage_merge(void);
119 __dead static void	usage_stage(void);
120 __dead static void	usage_unstage(void);
121 __dead static void	usage_cat(void);
122 __dead static void	usage_info(void);
123 
124 static const struct got_error*		cmd_import(int, char *[]);
125 static const struct got_error*		cmd_clone(int, char *[]);
126 static const struct got_error*		cmd_fetch(int, char *[]);
127 static const struct got_error*		cmd_checkout(int, char *[]);
128 static const struct got_error*		cmd_update(int, char *[]);
129 static const struct got_error*		cmd_log(int, char *[]);
130 static const struct got_error*		cmd_diff(int, char *[]);
131 static const struct got_error*		cmd_blame(int, char *[]);
132 static const struct got_error*		cmd_tree(int, char *[]);
133 static const struct got_error*		cmd_status(int, char *[]);
134 static const struct got_error*		cmd_ref(int, char *[]);
135 static const struct got_error*		cmd_branch(int, char *[]);
136 static const struct got_error*		cmd_tag(int, char *[]);
137 static const struct got_error*		cmd_add(int, char *[]);
138 static const struct got_error*		cmd_remove(int, char *[]);
139 static const struct got_error*		cmd_patch(int, char *[]);
140 static const struct got_error*		cmd_revert(int, char *[]);
141 static const struct got_error*		cmd_commit(int, char *[]);
142 static const struct got_error*		cmd_send(int, char *[]);
143 static const struct got_error*		cmd_cherrypick(int, char *[]);
144 static const struct got_error*		cmd_backout(int, char *[]);
145 static const struct got_error*		cmd_rebase(int, char *[]);
146 static const struct got_error*		cmd_histedit(int, char *[]);
147 static const struct got_error*		cmd_integrate(int, char *[]);
148 static const struct got_error*		cmd_merge(int, char *[]);
149 static const struct got_error*		cmd_stage(int, char *[]);
150 static const struct got_error*		cmd_unstage(int, char *[]);
151 static const struct got_error*		cmd_cat(int, char *[]);
152 static const struct got_error*		cmd_info(int, char *[]);
153 
154 static const struct got_cmd got_commands[] = {
155 	{ "import",	cmd_import,	usage_import,	"im" },
156 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
157 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
158 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
159 	{ "update",	cmd_update,	usage_update,	"up" },
160 	{ "log",	cmd_log,	usage_log,	"" },
161 	{ "diff",	cmd_diff,	usage_diff,	"di" },
162 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
163 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
164 	{ "status",	cmd_status,	usage_status,	"st" },
165 	{ "ref",	cmd_ref,	usage_ref,	"" },
166 	{ "branch",	cmd_branch,	usage_branch,	"br" },
167 	{ "tag",	cmd_tag,	usage_tag,	"" },
168 	{ "add",	cmd_add,	usage_add,	"" },
169 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
170 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
171 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
172 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
173 	{ "send",	cmd_send,	usage_send,	"se" },
174 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
175 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
176 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
177 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
178 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
179 	{ "merge",	cmd_merge,	usage_merge,	"mg" },
180 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
181 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
182 	{ "cat",	cmd_cat,	usage_cat,	"" },
183 	{ "info",	cmd_info,	usage_info,	"" },
184 };
185 
186 static void
187 list_commands(FILE *fp)
188 {
189 	size_t i;
190 
191 	fprintf(fp, "commands:");
192 	for (i = 0; i < nitems(got_commands); i++) {
193 		const struct got_cmd *cmd = &got_commands[i];
194 		fprintf(fp, " %s", cmd->cmd_name);
195 	}
196 	fputc('\n', fp);
197 }
198 
199 __dead static void
200 option_conflict(char a, char b)
201 {
202 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
203 }
204 
205 int
206 main(int argc, char *argv[])
207 {
208 	const struct got_cmd *cmd;
209 	size_t i;
210 	int ch;
211 	int hflag = 0, Vflag = 0;
212 	static const struct option longopts[] = {
213 	    { "version", no_argument, NULL, 'V' },
214 	    { NULL, 0, NULL, 0 }
215 	};
216 
217 	setlocale(LC_CTYPE, "");
218 
219 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
220 		switch (ch) {
221 		case 'h':
222 			hflag = 1;
223 			break;
224 		case 'V':
225 			Vflag = 1;
226 			break;
227 		default:
228 			usage(hflag, 1);
229 			/* NOTREACHED */
230 		}
231 	}
232 
233 	argc -= optind;
234 	argv += optind;
235 	optind = 1;
236 	optreset = 1;
237 
238 	if (Vflag) {
239 		got_version_print_str();
240 		return 0;
241 	}
242 
243 	if (argc <= 0)
244 		usage(hflag, hflag ? 0 : 1);
245 
246 	signal(SIGINT, catch_sigint);
247 	signal(SIGPIPE, catch_sigpipe);
248 
249 	for (i = 0; i < nitems(got_commands); i++) {
250 		const struct got_error *error;
251 
252 		cmd = &got_commands[i];
253 
254 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
255 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
256 			continue;
257 
258 		if (hflag)
259 			cmd->cmd_usage();
260 
261 		error = cmd->cmd_main(argc, argv);
262 		if (error && error->code != GOT_ERR_CANCELLED &&
263 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
264 		    !(sigpipe_received &&
265 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
266 		    !(sigint_received &&
267 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
268 			fflush(stdout);
269 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
270 			return 1;
271 		}
272 
273 		return 0;
274 	}
275 
276 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
277 	list_commands(stderr);
278 	return 1;
279 }
280 
281 __dead static void
282 usage(int hflag, int status)
283 {
284 	FILE *fp = (status == 0) ? stdout : stderr;
285 
286 	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
287 	    getprogname());
288 	if (hflag)
289 		list_commands(fp);
290 	exit(status);
291 }
292 
293 static const struct got_error *
294 get_editor(char **abspath)
295 {
296 	const struct got_error *err = NULL;
297 	const char *editor;
298 
299 	*abspath = NULL;
300 
301 	editor = getenv("VISUAL");
302 	if (editor == NULL)
303 		editor = getenv("EDITOR");
304 
305 	if (editor) {
306 		err = got_path_find_prog(abspath, editor);
307 		if (err)
308 			return err;
309 	}
310 
311 	if (*abspath == NULL) {
312 		*abspath = strdup("/usr/bin/vi");
313 		if (*abspath == NULL)
314 			return got_error_from_errno("strdup");
315 	}
316 
317 	return NULL;
318 }
319 
320 static const struct got_error *
321 apply_unveil(const char *repo_path, int repo_read_only,
322     const char *worktree_path)
323 {
324 	const struct got_error *err;
325 
326 #ifdef PROFILE
327 	if (unveil("gmon.out", "rwc") != 0)
328 		return got_error_from_errno2("unveil", "gmon.out");
329 #endif
330 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
331 		return got_error_from_errno2("unveil", repo_path);
332 
333 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
334 		return got_error_from_errno2("unveil", worktree_path);
335 
336 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
337 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
338 
339 	err = got_privsep_unveil_exec_helpers();
340 	if (err != NULL)
341 		return err;
342 
343 	if (unveil(NULL, NULL) != 0)
344 		return got_error_from_errno("unveil");
345 
346 	return NULL;
347 }
348 
349 __dead static void
350 usage_import(void)
351 {
352 	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
353 	    "[-r repository-path] directory\n", getprogname());
354 	exit(1);
355 }
356 
357 static int
358 spawn_editor(const char *editor, const char *file)
359 {
360 	pid_t pid;
361 	sig_t sighup, sigint, sigquit;
362 	int st = -1;
363 
364 	sighup = signal(SIGHUP, SIG_IGN);
365 	sigint = signal(SIGINT, SIG_IGN);
366 	sigquit = signal(SIGQUIT, SIG_IGN);
367 
368 	switch (pid = fork()) {
369 	case -1:
370 		goto doneediting;
371 	case 0:
372 		execl(editor, editor, file, (char *)NULL);
373 		_exit(127);
374 	}
375 
376 	while (waitpid(pid, &st, 0) == -1)
377 		if (errno != EINTR)
378 			break;
379 
380 doneediting:
381 	(void)signal(SIGHUP, sighup);
382 	(void)signal(SIGINT, sigint);
383 	(void)signal(SIGQUIT, sigquit);
384 
385 	if (!WIFEXITED(st)) {
386 		errno = EINTR;
387 		return -1;
388 	}
389 
390 	return WEXITSTATUS(st);
391 }
392 
393 static const struct got_error *
394 read_logmsg(char **logmsg, size_t *len, FILE *fp, size_t filesize)
395 {
396 	const struct got_error *err = NULL;
397 	char *line = NULL;
398 	size_t linesize = 0;
399 
400 	*logmsg = NULL;
401 	*len = 0;
402 
403 	if (fseeko(fp, 0L, SEEK_SET) == -1)
404 		return got_error_from_errno("fseeko");
405 
406 	*logmsg = malloc(filesize + 1);
407 	if (*logmsg == NULL)
408 		return got_error_from_errno("malloc");
409 	(*logmsg)[0] = '\0';
410 
411 	while (getline(&line, &linesize, fp) != -1) {
412 		if (line[0] == '#' || (*len == 0 && line[0] == '\n'))
413 			continue; /* remove comments and leading empty lines */
414 		*len = strlcat(*logmsg, line, filesize + 1);
415 		if (*len >= filesize + 1) {
416 			err = got_error(GOT_ERR_NO_SPACE);
417 			goto done;
418 		}
419 	}
420 	if (ferror(fp)) {
421 		err = got_ferror(fp, GOT_ERR_IO);
422 		goto done;
423 	}
424 
425 	while (*len > 0 && (*logmsg)[*len - 1] == '\n') {
426 		(*logmsg)[*len - 1] = '\0';
427 		(*len)--;
428 	}
429 done:
430 	free(line);
431 	if (err) {
432 		free(*logmsg);
433 		*logmsg = NULL;
434 		*len = 0;
435 	}
436 	return err;
437 }
438 
439 static const struct got_error *
440 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
441     const char *initial_content, size_t initial_content_len,
442     int require_modification)
443 {
444 	const struct got_error *err = NULL;
445 	struct stat st, st2;
446 	FILE *fp = NULL;
447 	size_t logmsg_len;
448 
449 	*logmsg = NULL;
450 
451 	if (stat(logmsg_path, &st) == -1)
452 		return got_error_from_errno2("stat", logmsg_path);
453 
454 	if (spawn_editor(editor, logmsg_path) == -1)
455 		return got_error_from_errno("failed spawning editor");
456 
457 	if (require_modification) {
458 		struct timespec timeout;
459 
460 		timeout.tv_sec = 0;
461 		timeout.tv_nsec = 1;
462 		nanosleep(&timeout,  NULL);
463 	}
464 
465 	if (stat(logmsg_path, &st2) == -1)
466 		return got_error_from_errno2("stat", logmsg_path);
467 
468 	if (require_modification && st.st_size == st2.st_size &&
469 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==))
470 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
471 		    "no changes made to commit message, aborting");
472 
473 	fp = fopen(logmsg_path, "re");
474 	if (fp == NULL) {
475 		err = got_error_from_errno("fopen");
476 		goto done;
477 	}
478 
479 	/* strip comments and leading/trailing newlines */
480 	err = read_logmsg(logmsg, &logmsg_len, fp, st2.st_size);
481 	if (err)
482 		goto done;
483 	if (logmsg_len == 0) {
484 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
485 		    "commit message cannot be empty, aborting");
486 		goto done;
487 	}
488 done:
489 	if (fp && fclose(fp) == EOF && err == NULL)
490 		err = got_error_from_errno("fclose");
491 	if (err) {
492 		free(*logmsg);
493 		*logmsg = NULL;
494 	}
495 	return err;
496 }
497 
498 static const struct got_error *
499 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
500     const char *path_dir, const char *branch_name)
501 {
502 	char *initial_content = NULL;
503 	const struct got_error *err = NULL;
504 	int initial_content_len;
505 	int fd = -1;
506 
507 	initial_content_len = asprintf(&initial_content,
508 	    "\n# %s to be imported to branch %s\n", path_dir,
509 	    branch_name);
510 	if (initial_content_len == -1)
511 		return got_error_from_errno("asprintf");
512 
513 	err = got_opentemp_named_fd(logmsg_path, &fd,
514 	    GOT_TMPDIR_STR "/got-importmsg", "");
515 	if (err)
516 		goto done;
517 
518 	if (write(fd, initial_content, initial_content_len) == -1) {
519 		err = got_error_from_errno2("write", *logmsg_path);
520 		goto done;
521 	}
522 	if (close(fd) == -1) {
523 		err = got_error_from_errno2("close", *logmsg_path);
524 		goto done;
525 	}
526 	fd = -1;
527 
528 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
529 	    initial_content_len, 1);
530 done:
531 	if (fd != -1 && close(fd) == -1 && err == NULL)
532 		err = got_error_from_errno2("close", *logmsg_path);
533 	free(initial_content);
534 	if (err) {
535 		free(*logmsg_path);
536 		*logmsg_path = NULL;
537 	}
538 	return err;
539 }
540 
541 static const struct got_error *
542 import_progress(void *arg, const char *path)
543 {
544 	printf("A  %s\n", path);
545 	return NULL;
546 }
547 
548 static const struct got_error *
549 valid_author(const char *author)
550 {
551 	const char *email = author;
552 
553 	/*
554 	 * Git' expects the author (or committer) to be in the form
555 	 * "name <email>", which are mostly free form (see the
556 	 * "committer" description in git-fast-import(1)).  We're only
557 	 * doing this to avoid git's object parser breaking on commits
558 	 * we create.
559 	 */
560 
561 	while (*author && *author != '\n' && *author != '<' && *author != '>')
562 		author++;
563 	if (author != email && *author == '<' && *(author - 1) != ' ')
564 		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
565 		    "between author name and email required", email);
566 	if (*author++ != '<')
567 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
568 	while (*author && *author != '\n' && *author != '<' && *author != '>')
569 		author++;
570 	if (strcmp(author, ">") != 0)
571 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
572 	return NULL;
573 }
574 
575 static const struct got_error *
576 get_author(char **author, struct got_repository *repo,
577     struct got_worktree *worktree)
578 {
579 	const struct got_error *err = NULL;
580 	const char *got_author = NULL, *name, *email;
581 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
582 
583 	*author = NULL;
584 
585 	if (worktree)
586 		worktree_conf = got_worktree_get_gotconfig(worktree);
587 	repo_conf = got_repo_get_gotconfig(repo);
588 
589 	/*
590 	 * Priority of potential author information sources, from most
591 	 * significant to least significant:
592 	 * 1) work tree's .got/got.conf file
593 	 * 2) repository's got.conf file
594 	 * 3) repository's git config file
595 	 * 4) environment variables
596 	 * 5) global git config files (in user's home directory or /etc)
597 	 */
598 
599 	if (worktree_conf)
600 		got_author = got_gotconfig_get_author(worktree_conf);
601 	if (got_author == NULL)
602 		got_author = got_gotconfig_get_author(repo_conf);
603 	if (got_author == NULL) {
604 		name = got_repo_get_gitconfig_author_name(repo);
605 		email = got_repo_get_gitconfig_author_email(repo);
606 		if (name && email) {
607 			if (asprintf(author, "%s <%s>", name, email) == -1)
608 				return got_error_from_errno("asprintf");
609 			return NULL;
610 		}
611 
612 		got_author = getenv("GOT_AUTHOR");
613 		if (got_author == NULL) {
614 			name = got_repo_get_global_gitconfig_author_name(repo);
615 			email = got_repo_get_global_gitconfig_author_email(
616 			    repo);
617 			if (name && email) {
618 				if (asprintf(author, "%s <%s>", name, email)
619 				    == -1)
620 					return got_error_from_errno("asprintf");
621 				return NULL;
622 			}
623 			/* TODO: Look up user in password database? */
624 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
625 		}
626 	}
627 
628 	*author = strdup(got_author);
629 	if (*author == NULL)
630 		return got_error_from_errno("strdup");
631 
632 	err = valid_author(*author);
633 	if (err) {
634 		free(*author);
635 		*author = NULL;
636 	}
637 	return err;
638 }
639 
640 static const struct got_error *
641 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
642     struct got_worktree *worktree)
643 {
644 	const char *got_allowed_signers = NULL;
645 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
646 
647 	*allowed_signers = NULL;
648 
649 	if (worktree)
650 		worktree_conf = got_worktree_get_gotconfig(worktree);
651 	repo_conf = got_repo_get_gotconfig(repo);
652 
653 	/*
654 	 * Priority of potential author information sources, from most
655 	 * significant to least significant:
656 	 * 1) work tree's .got/got.conf file
657 	 * 2) repository's got.conf file
658 	 */
659 
660 	if (worktree_conf)
661 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
662 		    worktree_conf);
663 	if (got_allowed_signers == NULL)
664 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
665 		    repo_conf);
666 
667 	if (got_allowed_signers) {
668 		*allowed_signers = strdup(got_allowed_signers);
669 		if (*allowed_signers == NULL)
670 			return got_error_from_errno("strdup");
671 	}
672 	return NULL;
673 }
674 
675 static const struct got_error *
676 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
677     struct got_worktree *worktree)
678 {
679 	const char *got_revoked_signers = NULL;
680 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
681 
682 	*revoked_signers = NULL;
683 
684 	if (worktree)
685 		worktree_conf = got_worktree_get_gotconfig(worktree);
686 	repo_conf = got_repo_get_gotconfig(repo);
687 
688 	/*
689 	 * Priority of potential author information sources, from most
690 	 * significant to least significant:
691 	 * 1) work tree's .got/got.conf file
692 	 * 2) repository's got.conf file
693 	 */
694 
695 	if (worktree_conf)
696 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
697 		    worktree_conf);
698 	if (got_revoked_signers == NULL)
699 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
700 		    repo_conf);
701 
702 	if (got_revoked_signers) {
703 		*revoked_signers = strdup(got_revoked_signers);
704 		if (*revoked_signers == NULL)
705 			return got_error_from_errno("strdup");
706 	}
707 	return NULL;
708 }
709 
710 static const char *
711 get_signer_id(struct got_repository *repo, struct got_worktree *worktree)
712 {
713 	const char *got_signer_id = NULL;
714 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
715 
716 	if (worktree)
717 		worktree_conf = got_worktree_get_gotconfig(worktree);
718 	repo_conf = got_repo_get_gotconfig(repo);
719 
720 	/*
721 	 * Priority of potential author information sources, from most
722 	 * significant to least significant:
723 	 * 1) work tree's .got/got.conf file
724 	 * 2) repository's got.conf file
725 	 */
726 
727 	if (worktree_conf)
728 		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
729 	if (got_signer_id == NULL)
730 		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
731 
732 	return got_signer_id;
733 }
734 
735 static const struct got_error *
736 get_gitconfig_path(char **gitconfig_path)
737 {
738 	const char *homedir = getenv("HOME");
739 
740 	*gitconfig_path = NULL;
741 	if (homedir) {
742 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
743 			return got_error_from_errno("asprintf");
744 
745 	}
746 	return NULL;
747 }
748 
749 static const struct got_error *
750 cmd_import(int argc, char *argv[])
751 {
752 	const struct got_error *error = NULL;
753 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
754 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
755 	const char *branch_name = NULL;
756 	char *id_str = NULL, *logmsg_path = NULL;
757 	char refname[PATH_MAX] = "refs/heads/";
758 	struct got_repository *repo = NULL;
759 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
760 	struct got_object_id *new_commit_id = NULL;
761 	int ch, n = 0;
762 	struct got_pathlist_head ignores;
763 	struct got_pathlist_entry *pe;
764 	int preserve_logmsg = 0;
765 	int *pack_fds = NULL;
766 
767 	TAILQ_INIT(&ignores);
768 
769 #ifndef PROFILE
770 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
771 	    "unveil",
772 	    NULL) == -1)
773 		err(1, "pledge");
774 #endif
775 
776 	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
777 		switch (ch) {
778 		case 'b':
779 			branch_name = optarg;
780 			break;
781 		case 'I':
782 			if (optarg[0] == '\0')
783 				break;
784 			error = got_pathlist_insert(&pe, &ignores, optarg,
785 			    NULL);
786 			if (error)
787 				goto done;
788 			break;
789 		case 'm':
790 			logmsg = strdup(optarg);
791 			if (logmsg == NULL) {
792 				error = got_error_from_errno("strdup");
793 				goto done;
794 			}
795 			break;
796 		case 'r':
797 			repo_path = realpath(optarg, NULL);
798 			if (repo_path == NULL) {
799 				error = got_error_from_errno2("realpath",
800 				    optarg);
801 				goto done;
802 			}
803 			break;
804 		default:
805 			usage_import();
806 			/* NOTREACHED */
807 		}
808 	}
809 
810 	argc -= optind;
811 	argv += optind;
812 
813 	if (argc != 1)
814 		usage_import();
815 
816 	if (repo_path == NULL) {
817 		repo_path = getcwd(NULL, 0);
818 		if (repo_path == NULL)
819 			return got_error_from_errno("getcwd");
820 	}
821 	got_path_strip_trailing_slashes(repo_path);
822 	error = get_gitconfig_path(&gitconfig_path);
823 	if (error)
824 		goto done;
825 	error = got_repo_pack_fds_open(&pack_fds);
826 	if (error != NULL)
827 		goto done;
828 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
829 	if (error)
830 		goto done;
831 
832 	error = get_author(&author, repo, NULL);
833 	if (error)
834 		return error;
835 
836 	/*
837 	 * Don't let the user create a branch name with a leading '-'.
838 	 * While technically a valid reference name, this case is usually
839 	 * an unintended typo.
840 	 */
841 	if (branch_name && branch_name[0] == '-')
842 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
843 
844 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
845 	if (error && error->code != GOT_ERR_NOT_REF)
846 		goto done;
847 
848 	if (branch_name)
849 		n = strlcat(refname, branch_name, sizeof(refname));
850 	else if (head_ref && got_ref_is_symbolic(head_ref))
851 		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
852 		    sizeof(refname));
853 	else
854 		n = strlcat(refname, "main", sizeof(refname));
855 	if (n >= sizeof(refname)) {
856 		error = got_error(GOT_ERR_NO_SPACE);
857 		goto done;
858 	}
859 
860 	error = got_ref_open(&branch_ref, repo, refname, 0);
861 	if (error) {
862 		if (error->code != GOT_ERR_NOT_REF)
863 			goto done;
864 	} else {
865 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
866 		    "import target branch already exists");
867 		goto done;
868 	}
869 
870 	path_dir = realpath(argv[0], NULL);
871 	if (path_dir == NULL) {
872 		error = got_error_from_errno2("realpath", argv[0]);
873 		goto done;
874 	}
875 	got_path_strip_trailing_slashes(path_dir);
876 
877 	/*
878 	 * unveil(2) traverses exec(2); if an editor is used we have
879 	 * to apply unveil after the log message has been written.
880 	 */
881 	if (logmsg == NULL || *logmsg == '\0') {
882 		error = get_editor(&editor);
883 		if (error)
884 			goto done;
885 		free(logmsg);
886 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
887 		    path_dir, refname);
888 		if (error) {
889 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
890 			    logmsg_path != NULL)
891 				preserve_logmsg = 1;
892 			goto done;
893 		}
894 	}
895 
896 	if (unveil(path_dir, "r") != 0) {
897 		error = got_error_from_errno2("unveil", path_dir);
898 		if (logmsg_path)
899 			preserve_logmsg = 1;
900 		goto done;
901 	}
902 
903 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
904 	if (error) {
905 		if (logmsg_path)
906 			preserve_logmsg = 1;
907 		goto done;
908 	}
909 
910 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
911 	    author, &ignores, repo, import_progress, NULL);
912 	if (error) {
913 		if (logmsg_path)
914 			preserve_logmsg = 1;
915 		goto done;
916 	}
917 
918 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
919 	if (error) {
920 		if (logmsg_path)
921 			preserve_logmsg = 1;
922 		goto done;
923 	}
924 
925 	error = got_ref_write(branch_ref, repo);
926 	if (error) {
927 		if (logmsg_path)
928 			preserve_logmsg = 1;
929 		goto done;
930 	}
931 
932 	error = got_object_id_str(&id_str, new_commit_id);
933 	if (error) {
934 		if (logmsg_path)
935 			preserve_logmsg = 1;
936 		goto done;
937 	}
938 
939 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
940 	if (error) {
941 		if (error->code != GOT_ERR_NOT_REF) {
942 			if (logmsg_path)
943 				preserve_logmsg = 1;
944 			goto done;
945 		}
946 
947 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
948 		    branch_ref);
949 		if (error) {
950 			if (logmsg_path)
951 				preserve_logmsg = 1;
952 			goto done;
953 		}
954 
955 		error = got_ref_write(head_ref, repo);
956 		if (error) {
957 			if (logmsg_path)
958 				preserve_logmsg = 1;
959 			goto done;
960 		}
961 	}
962 
963 	printf("Created branch %s with commit %s\n",
964 	    got_ref_get_name(branch_ref), id_str);
965 done:
966 	if (pack_fds) {
967 		const struct got_error *pack_err =
968 		    got_repo_pack_fds_close(pack_fds);
969 		if (error == NULL)
970 			error = pack_err;
971 	}
972 	if (repo) {
973 		const struct got_error *close_err = got_repo_close(repo);
974 		if (error == NULL)
975 			error = close_err;
976 	}
977 	if (preserve_logmsg) {
978 		fprintf(stderr, "%s: log message preserved in %s\n",
979 		    getprogname(), logmsg_path);
980 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
981 		error = got_error_from_errno2("unlink", logmsg_path);
982 	free(logmsg);
983 	free(logmsg_path);
984 	free(repo_path);
985 	free(editor);
986 	free(new_commit_id);
987 	free(id_str);
988 	free(author);
989 	free(gitconfig_path);
990 	if (branch_ref)
991 		got_ref_close(branch_ref);
992 	if (head_ref)
993 		got_ref_close(head_ref);
994 	return error;
995 }
996 
997 __dead static void
998 usage_clone(void)
999 {
1000 	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
1001 	    "repository-URL [directory]\n", getprogname());
1002 	exit(1);
1003 }
1004 
1005 struct got_fetch_progress_arg {
1006 	char last_scaled_size[FMT_SCALED_STRSIZE];
1007 	int last_p_indexed;
1008 	int last_p_resolved;
1009 	int verbosity;
1010 
1011 	struct got_repository *repo;
1012 
1013 	int create_configs;
1014 	int configs_created;
1015 	struct {
1016 		struct got_pathlist_head *symrefs;
1017 		struct got_pathlist_head *wanted_branches;
1018 		struct got_pathlist_head *wanted_refs;
1019 		const char *proto;
1020 		const char *host;
1021 		const char *port;
1022 		const char *remote_repo_path;
1023 		const char *git_url;
1024 		int fetch_all_branches;
1025 		int mirror_references;
1026 	} config_info;
1027 };
1028 
1029 /* XXX forward declaration */
1030 static const struct got_error *
1031 create_config_files(const char *proto, const char *host, const char *port,
1032     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1033     int mirror_references, struct got_pathlist_head *symrefs,
1034     struct got_pathlist_head *wanted_branches,
1035     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1036 
1037 static const struct got_error *
1038 fetch_progress(void *arg, const char *message, off_t packfile_size,
1039     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1040 {
1041 	const struct got_error *err = NULL;
1042 	struct got_fetch_progress_arg *a = arg;
1043 	char scaled_size[FMT_SCALED_STRSIZE];
1044 	int p_indexed, p_resolved;
1045 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1046 
1047 	/*
1048 	 * In order to allow a failed clone to be resumed with 'got fetch'
1049 	 * we try to create configuration files as soon as possible.
1050 	 * Once the server has sent information about its default branch
1051 	 * we have all required information.
1052 	 */
1053 	if (a->create_configs && !a->configs_created &&
1054 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1055 		err = create_config_files(a->config_info.proto,
1056 		    a->config_info.host, a->config_info.port,
1057 		    a->config_info.remote_repo_path,
1058 		    a->config_info.git_url,
1059 		    a->config_info.fetch_all_branches,
1060 		    a->config_info.mirror_references,
1061 		    a->config_info.symrefs,
1062 		    a->config_info.wanted_branches,
1063 		    a->config_info.wanted_refs, a->repo);
1064 		if (err)
1065 			return err;
1066 		a->configs_created = 1;
1067 	}
1068 
1069 	if (a->verbosity < 0)
1070 		return NULL;
1071 
1072 	if (message && message[0] != '\0') {
1073 		printf("\rserver: %s", message);
1074 		fflush(stdout);
1075 		return NULL;
1076 	}
1077 
1078 	if (packfile_size > 0 || nobj_indexed > 0) {
1079 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1080 		    (a->last_scaled_size[0] == '\0' ||
1081 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1082 			print_size = 1;
1083 			if (strlcpy(a->last_scaled_size, scaled_size,
1084 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1085 				return got_error(GOT_ERR_NO_SPACE);
1086 		}
1087 		if (nobj_indexed > 0) {
1088 			p_indexed = (nobj_indexed * 100) / nobj_total;
1089 			if (p_indexed != a->last_p_indexed) {
1090 				a->last_p_indexed = p_indexed;
1091 				print_indexed = 1;
1092 				print_size = 1;
1093 			}
1094 		}
1095 		if (nobj_resolved > 0) {
1096 			p_resolved = (nobj_resolved * 100) /
1097 			    (nobj_total - nobj_loose);
1098 			if (p_resolved != a->last_p_resolved) {
1099 				a->last_p_resolved = p_resolved;
1100 				print_resolved = 1;
1101 				print_indexed = 1;
1102 				print_size = 1;
1103 			}
1104 		}
1105 
1106 	}
1107 	if (print_size || print_indexed || print_resolved)
1108 		printf("\r");
1109 	if (print_size)
1110 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1111 	if (print_indexed)
1112 		printf("; indexing %d%%", p_indexed);
1113 	if (print_resolved)
1114 		printf("; resolving deltas %d%%", p_resolved);
1115 	if (print_size || print_indexed || print_resolved)
1116 		fflush(stdout);
1117 
1118 	return NULL;
1119 }
1120 
1121 static const struct got_error *
1122 create_symref(const char *refname, struct got_reference *target_ref,
1123     int verbosity, struct got_repository *repo)
1124 {
1125 	const struct got_error *err;
1126 	struct got_reference *head_symref;
1127 
1128 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1129 	if (err)
1130 		return err;
1131 
1132 	err = got_ref_write(head_symref, repo);
1133 	if (err == NULL && verbosity > 0) {
1134 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1135 		    got_ref_get_name(target_ref));
1136 	}
1137 	got_ref_close(head_symref);
1138 	return err;
1139 }
1140 
1141 static const struct got_error *
1142 list_remote_refs(struct got_pathlist_head *symrefs,
1143     struct got_pathlist_head *refs)
1144 {
1145 	const struct got_error *err;
1146 	struct got_pathlist_entry *pe;
1147 
1148 	TAILQ_FOREACH(pe, symrefs, entry) {
1149 		const char *refname = pe->path;
1150 		const char *targetref = pe->data;
1151 
1152 		printf("%s: %s\n", refname, targetref);
1153 	}
1154 
1155 	TAILQ_FOREACH(pe, refs, entry) {
1156 		const char *refname = pe->path;
1157 		struct got_object_id *id = pe->data;
1158 		char *id_str;
1159 
1160 		err = got_object_id_str(&id_str, id);
1161 		if (err)
1162 			return err;
1163 		printf("%s: %s\n", refname, id_str);
1164 		free(id_str);
1165 	}
1166 
1167 	return NULL;
1168 }
1169 
1170 static const struct got_error *
1171 create_ref(const char *refname, struct got_object_id *id,
1172     int verbosity, struct got_repository *repo)
1173 {
1174 	const struct got_error *err = NULL;
1175 	struct got_reference *ref;
1176 	char *id_str;
1177 
1178 	err = got_object_id_str(&id_str, id);
1179 	if (err)
1180 		return err;
1181 
1182 	err = got_ref_alloc(&ref, refname, id);
1183 	if (err)
1184 		goto done;
1185 
1186 	err = got_ref_write(ref, repo);
1187 	got_ref_close(ref);
1188 
1189 	if (err == NULL && verbosity >= 0)
1190 		printf("Created reference %s: %s\n", refname, id_str);
1191 done:
1192 	free(id_str);
1193 	return err;
1194 }
1195 
1196 static int
1197 match_wanted_ref(const char *refname, const char *wanted_ref)
1198 {
1199 	if (strncmp(refname, "refs/", 5) != 0)
1200 		return 0;
1201 	refname += 5;
1202 
1203 	/*
1204 	 * Prevent fetching of references that won't make any
1205 	 * sense outside of the remote repository's context.
1206 	 */
1207 	if (strncmp(refname, "got/", 4) == 0)
1208 		return 0;
1209 	if (strncmp(refname, "remotes/", 8) == 0)
1210 		return 0;
1211 
1212 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1213 		wanted_ref += 5;
1214 
1215 	/* Allow prefix match. */
1216 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1217 		return 1;
1218 
1219 	/* Allow exact match. */
1220 	return (strcmp(refname, wanted_ref) == 0);
1221 }
1222 
1223 static int
1224 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1225 {
1226 	struct got_pathlist_entry *pe;
1227 
1228 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1229 		if (match_wanted_ref(refname, pe->path))
1230 			return 1;
1231 	}
1232 
1233 	return 0;
1234 }
1235 
1236 static const struct got_error *
1237 create_wanted_ref(const char *refname, struct got_object_id *id,
1238     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1239 {
1240 	const struct got_error *err;
1241 	char *remote_refname;
1242 
1243 	if (strncmp("refs/", refname, 5) == 0)
1244 		refname += 5;
1245 
1246 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1247 	    remote_repo_name, refname) == -1)
1248 		return got_error_from_errno("asprintf");
1249 
1250 	err = create_ref(remote_refname, id, verbosity, repo);
1251 	free(remote_refname);
1252 	return err;
1253 }
1254 
1255 static const struct got_error *
1256 create_gotconfig(const char *proto, const char *host, const char *port,
1257     const char *remote_repo_path, const char *default_branch,
1258     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1259     struct got_pathlist_head *wanted_refs, int mirror_references,
1260     struct got_repository *repo)
1261 {
1262 	const struct got_error *err = NULL;
1263 	char *gotconfig_path = NULL;
1264 	char *gotconfig = NULL;
1265 	FILE *gotconfig_file = NULL;
1266 	const char *branchname = NULL;
1267 	char *branches = NULL, *refs = NULL;
1268 	ssize_t n;
1269 
1270 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1271 		struct got_pathlist_entry *pe;
1272 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1273 			char *s;
1274 			branchname = pe->path;
1275 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1276 				branchname += 11;
1277 			if (asprintf(&s, "%s\"%s\" ",
1278 			    branches ? branches : "", branchname) == -1) {
1279 				err = got_error_from_errno("asprintf");
1280 				goto done;
1281 			}
1282 			free(branches);
1283 			branches = s;
1284 		}
1285 	} else if (!fetch_all_branches && default_branch) {
1286 		branchname = default_branch;
1287 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1288 			branchname += 11;
1289 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1290 			err = got_error_from_errno("asprintf");
1291 			goto done;
1292 		}
1293 	}
1294 	if (!TAILQ_EMPTY(wanted_refs)) {
1295 		struct got_pathlist_entry *pe;
1296 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1297 			char *s;
1298 			const char *refname = pe->path;
1299 			if (strncmp(refname, "refs/", 5) == 0)
1300 				branchname += 5;
1301 			if (asprintf(&s, "%s\"%s\" ",
1302 			    refs ? refs : "", refname) == -1) {
1303 				err = got_error_from_errno("asprintf");
1304 				goto done;
1305 			}
1306 			free(refs);
1307 			refs = s;
1308 		}
1309 	}
1310 
1311 	/* Create got.conf(5). */
1312 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1313 	if (gotconfig_path == NULL) {
1314 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1315 		goto done;
1316 	}
1317 	gotconfig_file = fopen(gotconfig_path, "ae");
1318 	if (gotconfig_file == NULL) {
1319 		err = got_error_from_errno2("fopen", gotconfig_path);
1320 		goto done;
1321 	}
1322 	if (asprintf(&gotconfig,
1323 	    "remote \"%s\" {\n"
1324 	    "\tserver %s\n"
1325 	    "\tprotocol %s\n"
1326 	    "%s%s%s"
1327 	    "\trepository \"%s\"\n"
1328 	    "%s%s%s"
1329 	    "%s%s%s"
1330 	    "%s"
1331 	    "%s"
1332 	    "}\n",
1333 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1334 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1335 	    remote_repo_path, branches ? "\tbranch { " : "",
1336 	    branches ? branches : "", branches ? "}\n" : "",
1337 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
1338 	    mirror_references ? "\tmirror_references yes\n" : "",
1339 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1340 		err = got_error_from_errno("asprintf");
1341 		goto done;
1342 	}
1343 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1344 	if (n != strlen(gotconfig)) {
1345 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1346 		goto done;
1347 	}
1348 
1349 done:
1350 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1351 		err = got_error_from_errno2("fclose", gotconfig_path);
1352 	free(gotconfig_path);
1353 	free(branches);
1354 	return err;
1355 }
1356 
1357 static const struct got_error *
1358 create_gitconfig(const char *git_url, const char *default_branch,
1359     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1360     struct got_pathlist_head *wanted_refs, int mirror_references,
1361     struct got_repository *repo)
1362 {
1363 	const struct got_error *err = NULL;
1364 	char *gitconfig_path = NULL;
1365 	char *gitconfig = NULL;
1366 	FILE *gitconfig_file = NULL;
1367 	char *branches = NULL, *refs = NULL;
1368 	const char *branchname;
1369 	ssize_t n;
1370 
1371 	/* Create a config file Git can understand. */
1372 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1373 	if (gitconfig_path == NULL) {
1374 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1375 		goto done;
1376 	}
1377 	gitconfig_file = fopen(gitconfig_path, "ae");
1378 	if (gitconfig_file == NULL) {
1379 		err = got_error_from_errno2("fopen", gitconfig_path);
1380 		goto done;
1381 	}
1382 	if (fetch_all_branches) {
1383 		if (mirror_references) {
1384 			if (asprintf(&branches,
1385 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1386 				err = got_error_from_errno("asprintf");
1387 				goto done;
1388 			}
1389 		} else if (asprintf(&branches,
1390 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1391 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1392 			err = got_error_from_errno("asprintf");
1393 			goto done;
1394 		}
1395 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1396 		struct got_pathlist_entry *pe;
1397 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1398 			char *s;
1399 			branchname = pe->path;
1400 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1401 				branchname += 11;
1402 			if (mirror_references) {
1403 				if (asprintf(&s,
1404 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1405 				    branches ? branches : "",
1406 				    branchname, branchname) == -1) {
1407 					err = got_error_from_errno("asprintf");
1408 					goto done;
1409 				}
1410 			} else if (asprintf(&s,
1411 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1412 			    branches ? branches : "",
1413 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1414 			    branchname) == -1) {
1415 				err = got_error_from_errno("asprintf");
1416 				goto done;
1417 			}
1418 			free(branches);
1419 			branches = s;
1420 		}
1421 	} else {
1422 		/*
1423 		 * If the server specified a default branch, use just that one.
1424 		 * Otherwise fall back to fetching all branches on next fetch.
1425 		 */
1426 		if (default_branch) {
1427 			branchname = default_branch;
1428 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1429 				branchname += 11;
1430 		} else
1431 			branchname = "*"; /* fall back to all branches */
1432 		if (mirror_references) {
1433 			if (asprintf(&branches,
1434 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1435 			    branchname, branchname) == -1) {
1436 				err = got_error_from_errno("asprintf");
1437 				goto done;
1438 			}
1439 		} else if (asprintf(&branches,
1440 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1441 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1442 		    branchname) == -1) {
1443 			err = got_error_from_errno("asprintf");
1444 			goto done;
1445 		}
1446 	}
1447 	if (!TAILQ_EMPTY(wanted_refs)) {
1448 		struct got_pathlist_entry *pe;
1449 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1450 			char *s;
1451 			const char *refname = pe->path;
1452 			if (strncmp(refname, "refs/", 5) == 0)
1453 				refname += 5;
1454 			if (mirror_references) {
1455 				if (asprintf(&s,
1456 				    "%s\tfetch = refs/%s:refs/%s\n",
1457 				    refs ? refs : "", refname, refname) == -1) {
1458 					err = got_error_from_errno("asprintf");
1459 					goto done;
1460 				}
1461 			} else if (asprintf(&s,
1462 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1463 			    refs ? refs : "",
1464 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1465 			    refname) == -1) {
1466 				err = got_error_from_errno("asprintf");
1467 				goto done;
1468 			}
1469 			free(refs);
1470 			refs = s;
1471 		}
1472 	}
1473 
1474 	if (asprintf(&gitconfig,
1475 	    "[remote \"%s\"]\n"
1476 	    "\turl = %s\n"
1477 	    "%s"
1478 	    "%s"
1479 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1480 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1481 	    refs ? refs : "") == -1) {
1482 		err = got_error_from_errno("asprintf");
1483 		goto done;
1484 	}
1485 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1486 	if (n != strlen(gitconfig)) {
1487 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1488 		goto done;
1489 	}
1490 done:
1491 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1492 		err = got_error_from_errno2("fclose", gitconfig_path);
1493 	free(gitconfig_path);
1494 	free(branches);
1495 	return err;
1496 }
1497 
1498 static const struct got_error *
1499 create_config_files(const char *proto, const char *host, const char *port,
1500     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1501     int mirror_references, struct got_pathlist_head *symrefs,
1502     struct got_pathlist_head *wanted_branches,
1503     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1504 {
1505 	const struct got_error *err = NULL;
1506 	const char *default_branch = NULL;
1507 	struct got_pathlist_entry *pe;
1508 
1509 	/*
1510 	 * If we asked for a set of wanted branches then use the first
1511 	 * one of those.
1512 	 */
1513 	if (!TAILQ_EMPTY(wanted_branches)) {
1514 		pe = TAILQ_FIRST(wanted_branches);
1515 		default_branch = pe->path;
1516 	} else {
1517 		/* First HEAD ref listed by server is the default branch. */
1518 		TAILQ_FOREACH(pe, symrefs, entry) {
1519 			const char *refname = pe->path;
1520 			const char *target = pe->data;
1521 
1522 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1523 				continue;
1524 
1525 			default_branch = target;
1526 			break;
1527 		}
1528 	}
1529 
1530 	/* Create got.conf(5). */
1531 	err = create_gotconfig(proto, host, port, remote_repo_path,
1532 	    default_branch, fetch_all_branches, wanted_branches,
1533 	    wanted_refs, mirror_references, repo);
1534 	if (err)
1535 		return err;
1536 
1537 	/* Create a config file Git can understand. */
1538 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1539 	    wanted_branches, wanted_refs, mirror_references, repo);
1540 }
1541 
1542 static const struct got_error *
1543 cmd_clone(int argc, char *argv[])
1544 {
1545 	const struct got_error *error = NULL;
1546 	const char *uri, *dirname;
1547 	char *proto, *host, *port, *repo_name, *server_path;
1548 	char *default_destdir = NULL, *id_str = NULL;
1549 	const char *repo_path;
1550 	struct got_repository *repo = NULL;
1551 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1552 	struct got_pathlist_entry *pe;
1553 	struct got_object_id *pack_hash = NULL;
1554 	int ch, fetchfd = -1, fetchstatus;
1555 	pid_t fetchpid = -1;
1556 	struct got_fetch_progress_arg fpa;
1557 	char *git_url = NULL;
1558 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1559 	int bflag = 0, list_refs_only = 0;
1560 	int *pack_fds = NULL;
1561 
1562 	TAILQ_INIT(&refs);
1563 	TAILQ_INIT(&symrefs);
1564 	TAILQ_INIT(&wanted_branches);
1565 	TAILQ_INIT(&wanted_refs);
1566 
1567 	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
1568 		switch (ch) {
1569 		case 'a':
1570 			fetch_all_branches = 1;
1571 			break;
1572 		case 'b':
1573 			error = got_pathlist_append(&wanted_branches,
1574 			    optarg, NULL);
1575 			if (error)
1576 				return error;
1577 			bflag = 1;
1578 			break;
1579 		case 'l':
1580 			list_refs_only = 1;
1581 			break;
1582 		case 'm':
1583 			mirror_references = 1;
1584 			break;
1585 		case 'q':
1586 			verbosity = -1;
1587 			break;
1588 		case 'R':
1589 			error = got_pathlist_append(&wanted_refs,
1590 			    optarg, NULL);
1591 			if (error)
1592 				return error;
1593 			break;
1594 		case 'v':
1595 			if (verbosity < 0)
1596 				verbosity = 0;
1597 			else if (verbosity < 3)
1598 				verbosity++;
1599 			break;
1600 		default:
1601 			usage_clone();
1602 			break;
1603 		}
1604 	}
1605 	argc -= optind;
1606 	argv += optind;
1607 
1608 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1609 		option_conflict('a', 'b');
1610 	if (list_refs_only) {
1611 		if (!TAILQ_EMPTY(&wanted_branches))
1612 			option_conflict('l', 'b');
1613 		if (fetch_all_branches)
1614 			option_conflict('l', 'a');
1615 		if (mirror_references)
1616 			option_conflict('l', 'm');
1617 		if (!TAILQ_EMPTY(&wanted_refs))
1618 			option_conflict('l', 'R');
1619 	}
1620 
1621 	uri = argv[0];
1622 
1623 	if (argc == 1)
1624 		dirname = NULL;
1625 	else if (argc == 2)
1626 		dirname = argv[1];
1627 	else
1628 		usage_clone();
1629 
1630 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1631 	    &repo_name, uri);
1632 	if (error)
1633 		goto done;
1634 
1635 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1636 	    host, port ? ":" : "", port ? port : "",
1637 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1638 		error = got_error_from_errno("asprintf");
1639 		goto done;
1640 	}
1641 
1642 	if (strcmp(proto, "git") == 0) {
1643 #ifndef PROFILE
1644 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1645 		    "sendfd dns inet unveil", NULL) == -1)
1646 			err(1, "pledge");
1647 #endif
1648 	} else if (strcmp(proto, "git+ssh") == 0 ||
1649 	    strcmp(proto, "ssh") == 0) {
1650 #ifndef PROFILE
1651 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1652 		    "sendfd unveil", NULL) == -1)
1653 			err(1, "pledge");
1654 #endif
1655 	} else if (strcmp(proto, "http") == 0 ||
1656 	    strcmp(proto, "git+http") == 0) {
1657 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1658 		goto done;
1659 	} else {
1660 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1661 		goto done;
1662 	}
1663 	if (dirname == NULL) {
1664 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1665 			error = got_error_from_errno("asprintf");
1666 			goto done;
1667 		}
1668 		repo_path = default_destdir;
1669 	} else
1670 		repo_path = dirname;
1671 
1672 	if (!list_refs_only) {
1673 		error = got_path_mkdir(repo_path);
1674 		if (error &&
1675 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1676 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1677 			goto done;
1678 		if (!got_path_dir_is_empty(repo_path)) {
1679 			error = got_error_path(repo_path,
1680 			    GOT_ERR_DIR_NOT_EMPTY);
1681 			goto done;
1682 		}
1683 	}
1684 
1685 	error = got_dial_apply_unveil(proto);
1686 	if (error)
1687 		goto done;
1688 
1689 	error = apply_unveil(repo_path, 0, NULL);
1690 	if (error)
1691 		goto done;
1692 
1693 	if (verbosity >= 0)
1694 		printf("Connecting to %s\n", git_url);
1695 
1696 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1697 	    server_path, verbosity);
1698 	if (error)
1699 		goto done;
1700 
1701 	if (!list_refs_only) {
1702 		error = got_repo_init(repo_path, NULL);
1703 		if (error)
1704 			goto done;
1705 		error = got_repo_pack_fds_open(&pack_fds);
1706 		if (error != NULL)
1707 			goto done;
1708 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1709 		if (error)
1710 			goto done;
1711 	}
1712 
1713 	fpa.last_scaled_size[0] = '\0';
1714 	fpa.last_p_indexed = -1;
1715 	fpa.last_p_resolved = -1;
1716 	fpa.verbosity = verbosity;
1717 	fpa.create_configs = 1;
1718 	fpa.configs_created = 0;
1719 	fpa.repo = repo;
1720 	fpa.config_info.symrefs = &symrefs;
1721 	fpa.config_info.wanted_branches = &wanted_branches;
1722 	fpa.config_info.wanted_refs = &wanted_refs;
1723 	fpa.config_info.proto = proto;
1724 	fpa.config_info.host = host;
1725 	fpa.config_info.port = port;
1726 	fpa.config_info.remote_repo_path = server_path;
1727 	fpa.config_info.git_url = git_url;
1728 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1729 	fpa.config_info.mirror_references = mirror_references;
1730 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1731 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1732 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1733 	    list_refs_only, verbosity, fetchfd, repo, NULL, NULL, bflag,
1734 	    fetch_progress, &fpa);
1735 	if (error)
1736 		goto done;
1737 
1738 	if (list_refs_only) {
1739 		error = list_remote_refs(&symrefs, &refs);
1740 		goto done;
1741 	}
1742 
1743 	if (pack_hash == NULL) {
1744 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1745 		    "server sent an empty pack file");
1746 		goto done;
1747 	}
1748 	error = got_object_id_str(&id_str, pack_hash);
1749 	if (error)
1750 		goto done;
1751 	if (verbosity >= 0)
1752 		printf("\nFetched %s.pack\n", id_str);
1753 	free(id_str);
1754 
1755 	/* Set up references provided with the pack file. */
1756 	TAILQ_FOREACH(pe, &refs, entry) {
1757 		const char *refname = pe->path;
1758 		struct got_object_id *id = pe->data;
1759 		char *remote_refname;
1760 
1761 		if (is_wanted_ref(&wanted_refs, refname) &&
1762 		    !mirror_references) {
1763 			error = create_wanted_ref(refname, id,
1764 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1765 			    verbosity - 1, repo);
1766 			if (error)
1767 				goto done;
1768 			continue;
1769 		}
1770 
1771 		error = create_ref(refname, id, verbosity - 1, repo);
1772 		if (error)
1773 			goto done;
1774 
1775 		if (mirror_references)
1776 			continue;
1777 
1778 		if (strncmp("refs/heads/", refname, 11) != 0)
1779 			continue;
1780 
1781 		if (asprintf(&remote_refname,
1782 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1783 		    refname + 11) == -1) {
1784 			error = got_error_from_errno("asprintf");
1785 			goto done;
1786 		}
1787 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1788 		free(remote_refname);
1789 		if (error)
1790 			goto done;
1791 	}
1792 
1793 	/* Set the HEAD reference if the server provided one. */
1794 	TAILQ_FOREACH(pe, &symrefs, entry) {
1795 		struct got_reference *target_ref;
1796 		const char *refname = pe->path;
1797 		const char *target = pe->data;
1798 		char *remote_refname = NULL, *remote_target = NULL;
1799 
1800 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1801 			continue;
1802 
1803 		error = got_ref_open(&target_ref, repo, target, 0);
1804 		if (error) {
1805 			if (error->code == GOT_ERR_NOT_REF) {
1806 				error = NULL;
1807 				continue;
1808 			}
1809 			goto done;
1810 		}
1811 
1812 		error = create_symref(refname, target_ref, verbosity, repo);
1813 		got_ref_close(target_ref);
1814 		if (error)
1815 			goto done;
1816 
1817 		if (mirror_references)
1818 			continue;
1819 
1820 		if (strncmp("refs/heads/", target, 11) != 0)
1821 			continue;
1822 
1823 		if (asprintf(&remote_refname,
1824 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1825 		    refname) == -1) {
1826 			error = got_error_from_errno("asprintf");
1827 			goto done;
1828 		}
1829 		if (asprintf(&remote_target,
1830 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1831 		    target + 11) == -1) {
1832 			error = got_error_from_errno("asprintf");
1833 			free(remote_refname);
1834 			goto done;
1835 		}
1836 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1837 		if (error) {
1838 			free(remote_refname);
1839 			free(remote_target);
1840 			if (error->code == GOT_ERR_NOT_REF) {
1841 				error = NULL;
1842 				continue;
1843 			}
1844 			goto done;
1845 		}
1846 		error = create_symref(remote_refname, target_ref,
1847 		    verbosity - 1, repo);
1848 		free(remote_refname);
1849 		free(remote_target);
1850 		got_ref_close(target_ref);
1851 		if (error)
1852 			goto done;
1853 	}
1854 	if (pe == NULL) {
1855 		/*
1856 		 * We failed to set the HEAD reference. If we asked for
1857 		 * a set of wanted branches use the first of one of those
1858 		 * which could be fetched instead.
1859 		 */
1860 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1861 			const char *target = pe->path;
1862 			struct got_reference *target_ref;
1863 
1864 			error = got_ref_open(&target_ref, repo, target, 0);
1865 			if (error) {
1866 				if (error->code == GOT_ERR_NOT_REF) {
1867 					error = NULL;
1868 					continue;
1869 				}
1870 				goto done;
1871 			}
1872 
1873 			error = create_symref(GOT_REF_HEAD, target_ref,
1874 			    verbosity, repo);
1875 			got_ref_close(target_ref);
1876 			if (error)
1877 				goto done;
1878 			break;
1879 		}
1880 
1881 		if (!fpa.configs_created && pe != NULL) {
1882 			error = create_config_files(fpa.config_info.proto,
1883 			    fpa.config_info.host, fpa.config_info.port,
1884 			    fpa.config_info.remote_repo_path,
1885 			    fpa.config_info.git_url,
1886 			    fpa.config_info.fetch_all_branches,
1887 			    fpa.config_info.mirror_references,
1888 			    fpa.config_info.symrefs,
1889 			    fpa.config_info.wanted_branches,
1890 			    fpa.config_info.wanted_refs, fpa.repo);
1891 			if (error)
1892 				goto done;
1893 		}
1894 	}
1895 
1896 	if (verbosity >= 0)
1897 		printf("Created %s repository '%s'\n",
1898 		    mirror_references ? "mirrored" : "cloned", repo_path);
1899 done:
1900 	if (pack_fds) {
1901 		const struct got_error *pack_err =
1902 		    got_repo_pack_fds_close(pack_fds);
1903 		if (error == NULL)
1904 			error = pack_err;
1905 	}
1906 	if (fetchpid > 0) {
1907 		if (kill(fetchpid, SIGTERM) == -1)
1908 			error = got_error_from_errno("kill");
1909 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1910 			error = got_error_from_errno("waitpid");
1911 	}
1912 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1913 		error = got_error_from_errno("close");
1914 	if (repo) {
1915 		const struct got_error *close_err = got_repo_close(repo);
1916 		if (error == NULL)
1917 			error = close_err;
1918 	}
1919 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
1920 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
1921 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
1922 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
1923 	free(pack_hash);
1924 	free(proto);
1925 	free(host);
1926 	free(port);
1927 	free(server_path);
1928 	free(repo_name);
1929 	free(default_destdir);
1930 	free(git_url);
1931 	return error;
1932 }
1933 
1934 static const struct got_error *
1935 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1936     int replace_tags, int verbosity, struct got_repository *repo)
1937 {
1938 	const struct got_error *err = NULL;
1939 	char *new_id_str = NULL;
1940 	struct got_object_id *old_id = NULL;
1941 
1942 	err = got_object_id_str(&new_id_str, new_id);
1943 	if (err)
1944 		goto done;
1945 
1946 	if (!replace_tags &&
1947 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1948 		err = got_ref_resolve(&old_id, repo, ref);
1949 		if (err)
1950 			goto done;
1951 		if (got_object_id_cmp(old_id, new_id) == 0)
1952 			goto done;
1953 		if (verbosity >= 0) {
1954 			printf("Rejecting update of existing tag %s: %s\n",
1955 			    got_ref_get_name(ref), new_id_str);
1956 		}
1957 		goto done;
1958 	}
1959 
1960 	if (got_ref_is_symbolic(ref)) {
1961 		if (verbosity >= 0) {
1962 			printf("Replacing reference %s: %s\n",
1963 			    got_ref_get_name(ref),
1964 			    got_ref_get_symref_target(ref));
1965 		}
1966 		err = got_ref_change_symref_to_ref(ref, new_id);
1967 		if (err)
1968 			goto done;
1969 		err = got_ref_write(ref, repo);
1970 		if (err)
1971 			goto done;
1972 	} else {
1973 		err = got_ref_resolve(&old_id, repo, ref);
1974 		if (err)
1975 			goto done;
1976 		if (got_object_id_cmp(old_id, new_id) == 0)
1977 			goto done;
1978 
1979 		err = got_ref_change_ref(ref, new_id);
1980 		if (err)
1981 			goto done;
1982 		err = got_ref_write(ref, repo);
1983 		if (err)
1984 			goto done;
1985 	}
1986 
1987 	if (verbosity >= 0)
1988 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1989 		    new_id_str);
1990 done:
1991 	free(old_id);
1992 	free(new_id_str);
1993 	return err;
1994 }
1995 
1996 static const struct got_error *
1997 update_symref(const char *refname, struct got_reference *target_ref,
1998     int verbosity, struct got_repository *repo)
1999 {
2000 	const struct got_error *err = NULL, *unlock_err;
2001 	struct got_reference *symref;
2002 	int symref_is_locked = 0;
2003 
2004 	err = got_ref_open(&symref, repo, refname, 1);
2005 	if (err) {
2006 		if (err->code != GOT_ERR_NOT_REF)
2007 			return err;
2008 		err = got_ref_alloc_symref(&symref, refname, target_ref);
2009 		if (err)
2010 			goto done;
2011 
2012 		err = got_ref_write(symref, repo);
2013 		if (err)
2014 			goto done;
2015 
2016 		if (verbosity >= 0)
2017 			printf("Created reference %s: %s\n",
2018 			    got_ref_get_name(symref),
2019 			    got_ref_get_symref_target(symref));
2020 	} else {
2021 		symref_is_locked = 1;
2022 
2023 		if (strcmp(got_ref_get_symref_target(symref),
2024 		    got_ref_get_name(target_ref)) == 0)
2025 			goto done;
2026 
2027 		err = got_ref_change_symref(symref,
2028 		    got_ref_get_name(target_ref));
2029 		if (err)
2030 			goto done;
2031 
2032 		err = got_ref_write(symref, repo);
2033 		if (err)
2034 			goto done;
2035 
2036 		if (verbosity >= 0)
2037 			printf("Updated %s: %s\n", got_ref_get_name(symref),
2038 			    got_ref_get_symref_target(symref));
2039 
2040 	}
2041 done:
2042 	if (symref_is_locked) {
2043 		unlock_err = got_ref_unlock(symref);
2044 		if (unlock_err && err == NULL)
2045 			err = unlock_err;
2046 	}
2047 	got_ref_close(symref);
2048 	return err;
2049 }
2050 
2051 __dead static void
2052 usage_fetch(void)
2053 {
2054 	fprintf(stderr, "usage: %s fetch [-adlqtvX] [-b branch] "
2055 	    "[-R reference] [-r repository-path] [remote-repository]\n",
2056 	    getprogname());
2057 	exit(1);
2058 }
2059 
2060 static const struct got_error *
2061 delete_missing_ref(struct got_reference *ref,
2062     int verbosity, struct got_repository *repo)
2063 {
2064 	const struct got_error *err = NULL;
2065 	struct got_object_id *id = NULL;
2066 	char *id_str = NULL;
2067 
2068 	if (got_ref_is_symbolic(ref)) {
2069 		err = got_ref_delete(ref, repo);
2070 		if (err)
2071 			return err;
2072 		if (verbosity >= 0) {
2073 			printf("Deleted %s: %s\n",
2074 			    got_ref_get_name(ref),
2075 			    got_ref_get_symref_target(ref));
2076 		}
2077 	} else {
2078 		err = got_ref_resolve(&id, repo, ref);
2079 		if (err)
2080 			return err;
2081 		err = got_object_id_str(&id_str, id);
2082 		if (err)
2083 			goto done;
2084 
2085 		err = got_ref_delete(ref, repo);
2086 		if (err)
2087 			goto done;
2088 		if (verbosity >= 0) {
2089 			printf("Deleted %s: %s\n",
2090 			    got_ref_get_name(ref), id_str);
2091 		}
2092 	}
2093 done:
2094 	free(id);
2095 	free(id_str);
2096 	return err;
2097 }
2098 
2099 static const struct got_error *
2100 delete_missing_refs(struct got_pathlist_head *their_refs,
2101     struct got_pathlist_head *their_symrefs,
2102     const struct got_remote_repo *remote,
2103     int verbosity, struct got_repository *repo)
2104 {
2105 	const struct got_error *err = NULL, *unlock_err;
2106 	struct got_reflist_head my_refs;
2107 	struct got_reflist_entry *re;
2108 	struct got_pathlist_entry *pe;
2109 	char *remote_namespace = NULL;
2110 	char *local_refname = NULL;
2111 
2112 	TAILQ_INIT(&my_refs);
2113 
2114 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2115 	    == -1)
2116 		return got_error_from_errno("asprintf");
2117 
2118 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2119 	if (err)
2120 		goto done;
2121 
2122 	TAILQ_FOREACH(re, &my_refs, entry) {
2123 		const char *refname = got_ref_get_name(re->ref);
2124 		const char *their_refname;
2125 
2126 		if (remote->mirror_references) {
2127 			their_refname = refname;
2128 		} else {
2129 			if (strncmp(refname, remote_namespace,
2130 			    strlen(remote_namespace)) == 0) {
2131 				if (strcmp(refname + strlen(remote_namespace),
2132 				    GOT_REF_HEAD) == 0)
2133 					continue;
2134 				if (asprintf(&local_refname, "refs/heads/%s",
2135 				    refname + strlen(remote_namespace)) == -1) {
2136 					err = got_error_from_errno("asprintf");
2137 					goto done;
2138 				}
2139 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2140 				continue;
2141 
2142 			their_refname = local_refname;
2143 		}
2144 
2145 		TAILQ_FOREACH(pe, their_refs, entry) {
2146 			if (strcmp(their_refname, pe->path) == 0)
2147 				break;
2148 		}
2149 		if (pe != NULL)
2150 			continue;
2151 
2152 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2153 			if (strcmp(their_refname, pe->path) == 0)
2154 				break;
2155 		}
2156 		if (pe != NULL)
2157 			continue;
2158 
2159 		err = delete_missing_ref(re->ref, verbosity, repo);
2160 		if (err)
2161 			break;
2162 
2163 		if (local_refname) {
2164 			struct got_reference *ref;
2165 			err = got_ref_open(&ref, repo, local_refname, 1);
2166 			if (err) {
2167 				if (err->code != GOT_ERR_NOT_REF)
2168 					break;
2169 				free(local_refname);
2170 				local_refname = NULL;
2171 				continue;
2172 			}
2173 			err = delete_missing_ref(ref, verbosity, repo);
2174 			if (err)
2175 				break;
2176 			unlock_err = got_ref_unlock(ref);
2177 			got_ref_close(ref);
2178 			if (unlock_err && err == NULL) {
2179 				err = unlock_err;
2180 				break;
2181 			}
2182 
2183 			free(local_refname);
2184 			local_refname = NULL;
2185 		}
2186 	}
2187 done:
2188 	got_ref_list_free(&my_refs);
2189 	free(remote_namespace);
2190 	free(local_refname);
2191 	return err;
2192 }
2193 
2194 static const struct got_error *
2195 update_wanted_ref(const char *refname, struct got_object_id *id,
2196     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2197 {
2198 	const struct got_error *err, *unlock_err;
2199 	char *remote_refname;
2200 	struct got_reference *ref;
2201 
2202 	if (strncmp("refs/", refname, 5) == 0)
2203 		refname += 5;
2204 
2205 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2206 	    remote_repo_name, refname) == -1)
2207 		return got_error_from_errno("asprintf");
2208 
2209 	err = got_ref_open(&ref, repo, remote_refname, 1);
2210 	if (err) {
2211 		if (err->code != GOT_ERR_NOT_REF)
2212 			goto done;
2213 		err = create_ref(remote_refname, id, verbosity, repo);
2214 	} else {
2215 		err = update_ref(ref, id, 0, verbosity, repo);
2216 		unlock_err = got_ref_unlock(ref);
2217 		if (unlock_err && err == NULL)
2218 			err = unlock_err;
2219 		got_ref_close(ref);
2220 	}
2221 done:
2222 	free(remote_refname);
2223 	return err;
2224 }
2225 
2226 static const struct got_error *
2227 delete_ref(struct got_repository *repo, struct got_reference *ref)
2228 {
2229 	const struct got_error *err = NULL;
2230 	struct got_object_id *id = NULL;
2231 	char *id_str = NULL;
2232 	const char *target;
2233 
2234 	if (got_ref_is_symbolic(ref)) {
2235 		target = got_ref_get_symref_target(ref);
2236 	} else {
2237 		err = got_ref_resolve(&id, repo, ref);
2238 		if (err)
2239 			goto done;
2240 		err = got_object_id_str(&id_str, id);
2241 		if (err)
2242 			goto done;
2243 		target = id_str;
2244 	}
2245 
2246 	err = got_ref_delete(ref, repo);
2247 	if (err)
2248 		goto done;
2249 
2250 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2251 done:
2252 	free(id);
2253 	free(id_str);
2254 	return err;
2255 }
2256 
2257 static const struct got_error *
2258 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2259 {
2260 	const struct got_error *err = NULL;
2261 	struct got_reflist_head refs;
2262 	struct got_reflist_entry *re;
2263 	char *prefix;
2264 
2265 	TAILQ_INIT(&refs);
2266 
2267 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2268 		err = got_error_from_errno("asprintf");
2269 		goto done;
2270 	}
2271 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2272 	if (err)
2273 		goto done;
2274 
2275 	TAILQ_FOREACH(re, &refs, entry)
2276 		delete_ref(repo, re->ref);
2277 done:
2278 	got_ref_list_free(&refs);
2279 	return err;
2280 }
2281 
2282 static const struct got_error *
2283 cmd_fetch(int argc, char *argv[])
2284 {
2285 	const struct got_error *error = NULL, *unlock_err;
2286 	char *cwd = NULL, *repo_path = NULL;
2287 	const char *remote_name;
2288 	char *proto = NULL, *host = NULL, *port = NULL;
2289 	char *repo_name = NULL, *server_path = NULL;
2290 	const struct got_remote_repo *remotes, *remote = NULL;
2291 	int nremotes;
2292 	char *id_str = NULL;
2293 	struct got_repository *repo = NULL;
2294 	struct got_worktree *worktree = NULL;
2295 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2296 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2297 	struct got_pathlist_entry *pe;
2298 	struct got_reflist_head remote_refs;
2299 	struct got_reflist_entry *re;
2300 	struct got_object_id *pack_hash = NULL;
2301 	int i, ch, fetchfd = -1, fetchstatus;
2302 	pid_t fetchpid = -1;
2303 	struct got_fetch_progress_arg fpa;
2304 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2305 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2306 	int *pack_fds = NULL, have_bflag = 0;
2307 	const char *remote_head = NULL, *worktree_branch = NULL;
2308 
2309 	TAILQ_INIT(&refs);
2310 	TAILQ_INIT(&symrefs);
2311 	TAILQ_INIT(&remote_refs);
2312 	TAILQ_INIT(&wanted_branches);
2313 	TAILQ_INIT(&wanted_refs);
2314 
2315 	while ((ch = getopt(argc, argv, "ab:dlqR:r:tvX")) != -1) {
2316 		switch (ch) {
2317 		case 'a':
2318 			fetch_all_branches = 1;
2319 			break;
2320 		case 'b':
2321 			error = got_pathlist_append(&wanted_branches,
2322 			    optarg, NULL);
2323 			if (error)
2324 				return error;
2325 			have_bflag = 1;
2326 			break;
2327 		case 'd':
2328 			delete_refs = 1;
2329 			break;
2330 		case 'l':
2331 			list_refs_only = 1;
2332 			break;
2333 		case 'q':
2334 			verbosity = -1;
2335 			break;
2336 		case 'R':
2337 			error = got_pathlist_append(&wanted_refs,
2338 			    optarg, NULL);
2339 			if (error)
2340 				return error;
2341 			break;
2342 		case 'r':
2343 			repo_path = realpath(optarg, NULL);
2344 			if (repo_path == NULL)
2345 				return got_error_from_errno2("realpath",
2346 				    optarg);
2347 			got_path_strip_trailing_slashes(repo_path);
2348 			break;
2349 		case 't':
2350 			replace_tags = 1;
2351 			break;
2352 		case 'v':
2353 			if (verbosity < 0)
2354 				verbosity = 0;
2355 			else if (verbosity < 3)
2356 				verbosity++;
2357 			break;
2358 		case 'X':
2359 			delete_remote = 1;
2360 			break;
2361 		default:
2362 			usage_fetch();
2363 			break;
2364 		}
2365 	}
2366 	argc -= optind;
2367 	argv += optind;
2368 
2369 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2370 		option_conflict('a', 'b');
2371 	if (list_refs_only) {
2372 		if (!TAILQ_EMPTY(&wanted_branches))
2373 			option_conflict('l', 'b');
2374 		if (fetch_all_branches)
2375 			option_conflict('l', 'a');
2376 		if (delete_refs)
2377 			option_conflict('l', 'd');
2378 		if (delete_remote)
2379 			option_conflict('l', 'X');
2380 	}
2381 	if (delete_remote) {
2382 		if (fetch_all_branches)
2383 			option_conflict('X', 'a');
2384 		if (!TAILQ_EMPTY(&wanted_branches))
2385 			option_conflict('X', 'b');
2386 		if (delete_refs)
2387 			option_conflict('X', 'd');
2388 		if (replace_tags)
2389 			option_conflict('X', 't');
2390 		if (!TAILQ_EMPTY(&wanted_refs))
2391 			option_conflict('X', 'R');
2392 	}
2393 
2394 	if (argc == 0) {
2395 		if (delete_remote)
2396 			errx(1, "-X option requires a remote name");
2397 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2398 	} else if (argc == 1)
2399 		remote_name = argv[0];
2400 	else
2401 		usage_fetch();
2402 
2403 	cwd = getcwd(NULL, 0);
2404 	if (cwd == NULL) {
2405 		error = got_error_from_errno("getcwd");
2406 		goto done;
2407 	}
2408 
2409 	error = got_repo_pack_fds_open(&pack_fds);
2410 	if (error != NULL)
2411 		goto done;
2412 
2413 	if (repo_path == NULL) {
2414 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
2415 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2416 			goto done;
2417 		else
2418 			error = NULL;
2419 		if (worktree) {
2420 			repo_path =
2421 			    strdup(got_worktree_get_repo_path(worktree));
2422 			if (repo_path == NULL)
2423 				error = got_error_from_errno("strdup");
2424 			if (error)
2425 				goto done;
2426 		} else {
2427 			repo_path = strdup(cwd);
2428 			if (repo_path == NULL) {
2429 				error = got_error_from_errno("strdup");
2430 				goto done;
2431 			}
2432 		}
2433 	}
2434 
2435 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2436 	if (error)
2437 		goto done;
2438 
2439 	if (delete_remote) {
2440 		error = delete_refs_for_remote(repo, remote_name);
2441 		goto done; /* nothing else to do */
2442 	}
2443 
2444 	if (worktree) {
2445 		worktree_conf = got_worktree_get_gotconfig(worktree);
2446 		if (worktree_conf) {
2447 			got_gotconfig_get_remotes(&nremotes, &remotes,
2448 			    worktree_conf);
2449 			for (i = 0; i < nremotes; i++) {
2450 				if (strcmp(remotes[i].name, remote_name) == 0) {
2451 					remote = &remotes[i];
2452 					break;
2453 				}
2454 			}
2455 		}
2456 	}
2457 	if (remote == NULL) {
2458 		repo_conf = got_repo_get_gotconfig(repo);
2459 		if (repo_conf) {
2460 			got_gotconfig_get_remotes(&nremotes, &remotes,
2461 			    repo_conf);
2462 			for (i = 0; i < nremotes; i++) {
2463 				if (strcmp(remotes[i].name, remote_name) == 0) {
2464 					remote = &remotes[i];
2465 					break;
2466 				}
2467 			}
2468 		}
2469 	}
2470 	if (remote == NULL) {
2471 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2472 		for (i = 0; i < nremotes; i++) {
2473 			if (strcmp(remotes[i].name, remote_name) == 0) {
2474 				remote = &remotes[i];
2475 				break;
2476 			}
2477 		}
2478 	}
2479 	if (remote == NULL) {
2480 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2481 		goto done;
2482 	}
2483 
2484 	if (TAILQ_EMPTY(&wanted_branches)) {
2485 		if (!fetch_all_branches)
2486 			fetch_all_branches = remote->fetch_all_branches;
2487 		for (i = 0; i < remote->nfetch_branches; i++) {
2488 			error = got_pathlist_append(&wanted_branches,
2489 			    remote->fetch_branches[i], NULL);
2490 			if (error)
2491 				goto done;
2492 		}
2493 	}
2494 	if (TAILQ_EMPTY(&wanted_refs)) {
2495 		for (i = 0; i < remote->nfetch_refs; i++) {
2496 			error = got_pathlist_append(&wanted_refs,
2497 			    remote->fetch_refs[i], NULL);
2498 			if (error)
2499 				goto done;
2500 		}
2501 	}
2502 
2503 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2504 	    &repo_name, remote->fetch_url);
2505 	if (error)
2506 		goto done;
2507 
2508 	if (strcmp(proto, "git") == 0) {
2509 #ifndef PROFILE
2510 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2511 		    "sendfd dns inet unveil", NULL) == -1)
2512 			err(1, "pledge");
2513 #endif
2514 	} else if (strcmp(proto, "git+ssh") == 0 ||
2515 	    strcmp(proto, "ssh") == 0) {
2516 #ifndef PROFILE
2517 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2518 		    "sendfd unveil", NULL) == -1)
2519 			err(1, "pledge");
2520 #endif
2521 	} else if (strcmp(proto, "http") == 0 ||
2522 	    strcmp(proto, "git+http") == 0) {
2523 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2524 		goto done;
2525 	} else {
2526 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2527 		goto done;
2528 	}
2529 
2530 	error = got_dial_apply_unveil(proto);
2531 	if (error)
2532 		goto done;
2533 
2534 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2535 	if (error)
2536 		goto done;
2537 
2538 	if (verbosity >= 0) {
2539 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
2540 		    remote->name, proto, host,
2541 		    port ? ":" : "", port ? port : "",
2542 		    *server_path == '/' ? "" : "/", server_path);
2543 	}
2544 
2545 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2546 	    server_path, verbosity);
2547 	if (error)
2548 		goto done;
2549 
2550 	if (!have_bflag) {
2551 		/*
2552 		 * If set, get this remote's HEAD ref target so
2553 		 * if it has changed on the server we can fetch it.
2554 		 */
2555 		error = got_ref_list(&remote_refs, repo, "refs/remotes",
2556 		    got_ref_cmp_by_name, repo);
2557 		if (error)
2558 			goto done;
2559 
2560 		TAILQ_FOREACH(re, &remote_refs, entry) {
2561 			const char	*remote_refname, *remote_target;
2562 			size_t		 remote_name_len;
2563 
2564 			if (!got_ref_is_symbolic(re->ref))
2565 				continue;
2566 
2567 			remote_name_len = strlen(remote->name);
2568 			remote_refname = got_ref_get_name(re->ref);
2569 
2570 			/* we only want refs/remotes/$remote->name/HEAD */
2571 			if (strncmp(remote_refname + 13, remote->name,
2572 			    remote_name_len) != 0)
2573 				continue;
2574 
2575 			if (strcmp(remote_refname + remote_name_len + 14,
2576 			    GOT_REF_HEAD) != 0)
2577 				continue;
2578 
2579 			/*
2580 			 * Take the name itself because we already
2581 			 * only match with refs/heads/ in fetch_pack().
2582 			 */
2583 			remote_target = got_ref_get_symref_target(re->ref);
2584 			remote_head = remote_target + remote_name_len + 14;
2585 			break;
2586 		}
2587 
2588 		if (worktree) {
2589 			const char *refname;
2590 
2591 			refname = got_worktree_get_head_ref_name(worktree);
2592 			if (strncmp(refname, "refs/heads/", 11) == 0)
2593 				worktree_branch = refname;
2594 		}
2595 	}
2596 
2597 	fpa.last_scaled_size[0] = '\0';
2598 	fpa.last_p_indexed = -1;
2599 	fpa.last_p_resolved = -1;
2600 	fpa.verbosity = verbosity;
2601 	fpa.repo = repo;
2602 	fpa.create_configs = 0;
2603 	fpa.configs_created = 0;
2604 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2605 
2606 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2607 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2608 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2609 	    worktree_branch, remote_head, have_bflag, fetch_progress, &fpa);
2610 	if (error)
2611 		goto done;
2612 
2613 	if (list_refs_only) {
2614 		error = list_remote_refs(&symrefs, &refs);
2615 		goto done;
2616 	}
2617 
2618 	if (pack_hash == NULL) {
2619 		if (verbosity >= 0)
2620 			printf("Already up-to-date\n");
2621 	} else if (verbosity >= 0) {
2622 		error = got_object_id_str(&id_str, pack_hash);
2623 		if (error)
2624 			goto done;
2625 		printf("\nFetched %s.pack\n", id_str);
2626 		free(id_str);
2627 		id_str = NULL;
2628 	}
2629 
2630 	/* Update references provided with the pack file. */
2631 	TAILQ_FOREACH(pe, &refs, entry) {
2632 		const char *refname = pe->path;
2633 		struct got_object_id *id = pe->data;
2634 		struct got_reference *ref;
2635 		char *remote_refname;
2636 
2637 		if (is_wanted_ref(&wanted_refs, refname) &&
2638 		    !remote->mirror_references) {
2639 			error = update_wanted_ref(refname, id,
2640 			    remote->name, verbosity, repo);
2641 			if (error)
2642 				goto done;
2643 			continue;
2644 		}
2645 
2646 		if (remote->mirror_references ||
2647 		    strncmp("refs/tags/", refname, 10) == 0) {
2648 			error = got_ref_open(&ref, repo, refname, 1);
2649 			if (error) {
2650 				if (error->code != GOT_ERR_NOT_REF)
2651 					goto done;
2652 				error = create_ref(refname, id, verbosity,
2653 				    repo);
2654 				if (error)
2655 					goto done;
2656 			} else {
2657 				error = update_ref(ref, id, replace_tags,
2658 				    verbosity, repo);
2659 				unlock_err = got_ref_unlock(ref);
2660 				if (unlock_err && error == NULL)
2661 					error = unlock_err;
2662 				got_ref_close(ref);
2663 				if (error)
2664 					goto done;
2665 			}
2666 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2667 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2668 			    remote_name, refname + 11) == -1) {
2669 				error = got_error_from_errno("asprintf");
2670 				goto done;
2671 			}
2672 
2673 			error = got_ref_open(&ref, repo, remote_refname, 1);
2674 			if (error) {
2675 				if (error->code != GOT_ERR_NOT_REF)
2676 					goto done;
2677 				error = create_ref(remote_refname, id,
2678 				    verbosity, repo);
2679 				if (error)
2680 					goto done;
2681 			} else {
2682 				error = update_ref(ref, id, replace_tags,
2683 				    verbosity, repo);
2684 				unlock_err = got_ref_unlock(ref);
2685 				if (unlock_err && error == NULL)
2686 					error = unlock_err;
2687 				got_ref_close(ref);
2688 				if (error)
2689 					goto done;
2690 			}
2691 
2692 			/* Also create a local branch if none exists yet. */
2693 			error = got_ref_open(&ref, repo, refname, 1);
2694 			if (error) {
2695 				if (error->code != GOT_ERR_NOT_REF)
2696 					goto done;
2697 				error = create_ref(refname, id, verbosity,
2698 				    repo);
2699 				if (error)
2700 					goto done;
2701 			} else {
2702 				unlock_err = got_ref_unlock(ref);
2703 				if (unlock_err && error == NULL)
2704 					error = unlock_err;
2705 				got_ref_close(ref);
2706 			}
2707 		}
2708 	}
2709 	if (delete_refs) {
2710 		error = delete_missing_refs(&refs, &symrefs, remote,
2711 		    verbosity, repo);
2712 		if (error)
2713 			goto done;
2714 	}
2715 
2716 	if (!remote->mirror_references) {
2717 		/* Update remote HEAD reference if the server provided one. */
2718 		TAILQ_FOREACH(pe, &symrefs, entry) {
2719 			struct got_reference *target_ref;
2720 			const char *refname = pe->path;
2721 			const char *target = pe->data;
2722 			char *remote_refname = NULL, *remote_target = NULL;
2723 
2724 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2725 				continue;
2726 
2727 			if (strncmp("refs/heads/", target, 11) != 0)
2728 				continue;
2729 
2730 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2731 			    remote->name, refname) == -1) {
2732 				error = got_error_from_errno("asprintf");
2733 				goto done;
2734 			}
2735 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2736 			    remote->name, target + 11) == -1) {
2737 				error = got_error_from_errno("asprintf");
2738 				free(remote_refname);
2739 				goto done;
2740 			}
2741 
2742 			error = got_ref_open(&target_ref, repo, remote_target,
2743 			    0);
2744 			if (error) {
2745 				free(remote_refname);
2746 				free(remote_target);
2747 				if (error->code == GOT_ERR_NOT_REF) {
2748 					error = NULL;
2749 					continue;
2750 				}
2751 				goto done;
2752 			}
2753 			error = update_symref(remote_refname, target_ref,
2754 			    verbosity, repo);
2755 			free(remote_refname);
2756 			free(remote_target);
2757 			got_ref_close(target_ref);
2758 			if (error)
2759 				goto done;
2760 		}
2761 	}
2762 done:
2763 	if (fetchpid > 0) {
2764 		if (kill(fetchpid, SIGTERM) == -1)
2765 			error = got_error_from_errno("kill");
2766 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2767 			error = got_error_from_errno("waitpid");
2768 	}
2769 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2770 		error = got_error_from_errno("close");
2771 	if (repo) {
2772 		const struct got_error *close_err = got_repo_close(repo);
2773 		if (error == NULL)
2774 			error = close_err;
2775 	}
2776 	if (worktree)
2777 		got_worktree_close(worktree);
2778 	if (pack_fds) {
2779 		const struct got_error *pack_err =
2780 		    got_repo_pack_fds_close(pack_fds);
2781 		if (error == NULL)
2782 			error = pack_err;
2783 	}
2784 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
2785 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
2786 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
2787 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
2788 	got_ref_list_free(&remote_refs);
2789 	free(id_str);
2790 	free(cwd);
2791 	free(repo_path);
2792 	free(pack_hash);
2793 	free(proto);
2794 	free(host);
2795 	free(port);
2796 	free(server_path);
2797 	free(repo_name);
2798 	return error;
2799 }
2800 
2801 
2802 __dead static void
2803 usage_checkout(void)
2804 {
2805 	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
2806 	    "[-p path-prefix] repository-path [work-tree-path]\n",
2807 	    getprogname());
2808 	exit(1);
2809 }
2810 
2811 static void
2812 show_worktree_base_ref_warning(void)
2813 {
2814 	fprintf(stderr, "%s: warning: could not create a reference "
2815 	    "to the work tree's base commit; the commit could be "
2816 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2817 	    "repository writable and running 'got update' will prevent this\n",
2818 	    getprogname());
2819 }
2820 
2821 struct got_checkout_progress_arg {
2822 	const char *worktree_path;
2823 	int had_base_commit_ref_error;
2824 	int verbosity;
2825 };
2826 
2827 static const struct got_error *
2828 checkout_progress(void *arg, unsigned char status, const char *path)
2829 {
2830 	struct got_checkout_progress_arg *a = arg;
2831 
2832 	/* Base commit bump happens silently. */
2833 	if (status == GOT_STATUS_BUMP_BASE)
2834 		return NULL;
2835 
2836 	if (status == GOT_STATUS_BASE_REF_ERR) {
2837 		a->had_base_commit_ref_error = 1;
2838 		return NULL;
2839 	}
2840 
2841 	while (path[0] == '/')
2842 		path++;
2843 
2844 	if (a->verbosity >= 0)
2845 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2846 
2847 	return NULL;
2848 }
2849 
2850 static const struct got_error *
2851 check_cancelled(void *arg)
2852 {
2853 	if (sigint_received || sigpipe_received)
2854 		return got_error(GOT_ERR_CANCELLED);
2855 	return NULL;
2856 }
2857 
2858 static const struct got_error *
2859 check_linear_ancestry(struct got_object_id *commit_id,
2860     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2861     struct got_repository *repo)
2862 {
2863 	const struct got_error *err = NULL;
2864 	struct got_object_id *yca_id;
2865 
2866 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2867 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2868 	if (err)
2869 		return err;
2870 
2871 	if (yca_id == NULL)
2872 		return got_error(GOT_ERR_ANCESTRY);
2873 
2874 	/*
2875 	 * Require a straight line of history between the target commit
2876 	 * and the work tree's base commit.
2877 	 *
2878 	 * Non-linear situations such as this require a rebase:
2879 	 *
2880 	 * (commit) D       F (base_commit)
2881 	 *           \     /
2882 	 *            C   E
2883 	 *             \ /
2884 	 *              B (yca)
2885 	 *              |
2886 	 *              A
2887 	 *
2888 	 * 'got update' only handles linear cases:
2889 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2890 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2891 	 */
2892 	if (allow_forwards_in_time_only) {
2893 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2894 		return got_error(GOT_ERR_ANCESTRY);
2895 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2896 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2897 		return got_error(GOT_ERR_ANCESTRY);
2898 
2899 	free(yca_id);
2900 	return NULL;
2901 }
2902 
2903 static const struct got_error *
2904 check_same_branch(struct got_object_id *commit_id,
2905     struct got_reference *head_ref, struct got_repository *repo)
2906 {
2907 	const struct got_error *err = NULL;
2908 	struct got_commit_graph *graph = NULL;
2909 	struct got_object_id *head_commit_id = NULL;
2910 
2911 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2912 	if (err)
2913 		goto done;
2914 
2915 	if (got_object_id_cmp(head_commit_id, commit_id) == 0)
2916 		goto done;
2917 
2918 	err = got_commit_graph_open(&graph, "/", 1);
2919 	if (err)
2920 		goto done;
2921 
2922 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2923 	    check_cancelled, NULL);
2924 	if (err)
2925 		goto done;
2926 
2927 	for (;;) {
2928 		struct got_object_id id;
2929 
2930 		err = got_commit_graph_iter_next(&id, graph, repo,
2931 		    check_cancelled, NULL);
2932 		if (err) {
2933 			if (err->code == GOT_ERR_ITER_COMPLETED)
2934 				err = got_error(GOT_ERR_ANCESTRY);
2935 			break;
2936 		}
2937 
2938 		if (got_object_id_cmp(&id, commit_id) == 0)
2939 			break;
2940 	}
2941 done:
2942 	if (graph)
2943 		got_commit_graph_close(graph);
2944 	free(head_commit_id);
2945 	return err;
2946 }
2947 
2948 static const struct got_error *
2949 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2950 {
2951 	static char msg[512];
2952 	const char *branch_name;
2953 
2954 	if (got_ref_is_symbolic(ref))
2955 		branch_name = got_ref_get_symref_target(ref);
2956 	else
2957 		branch_name = got_ref_get_name(ref);
2958 
2959 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2960 		branch_name += 11;
2961 
2962 	snprintf(msg, sizeof(msg),
2963 	    "target commit is not contained in branch '%s'; "
2964 	    "the branch to use must be specified with -b; "
2965 	    "if necessary a new branch can be created for "
2966 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2967 	    branch_name, commit_id_str);
2968 
2969 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2970 }
2971 
2972 static const struct got_error *
2973 cmd_checkout(int argc, char *argv[])
2974 {
2975 	const struct got_error *error = NULL;
2976 	struct got_repository *repo = NULL;
2977 	struct got_reference *head_ref = NULL, *ref = NULL;
2978 	struct got_worktree *worktree = NULL;
2979 	char *repo_path = NULL;
2980 	char *worktree_path = NULL;
2981 	const char *path_prefix = "";
2982 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2983 	char *commit_id_str = NULL, *keyword_idstr = NULL;
2984 	struct got_object_id *commit_id = NULL;
2985 	char *cwd = NULL;
2986 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2987 	struct got_pathlist_head paths;
2988 	struct got_checkout_progress_arg cpa;
2989 	int *pack_fds = NULL;
2990 
2991 	TAILQ_INIT(&paths);
2992 
2993 #ifndef PROFILE
2994 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2995 	    "unveil", NULL) == -1)
2996 		err(1, "pledge");
2997 #endif
2998 
2999 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
3000 		switch (ch) {
3001 		case 'b':
3002 			branch_name = optarg;
3003 			break;
3004 		case 'c':
3005 			commit_id_str = strdup(optarg);
3006 			if (commit_id_str == NULL)
3007 				return got_error_from_errno("strdup");
3008 			break;
3009 		case 'E':
3010 			allow_nonempty = 1;
3011 			break;
3012 		case 'p':
3013 			path_prefix = optarg;
3014 			break;
3015 		case 'q':
3016 			verbosity = -1;
3017 			break;
3018 		default:
3019 			usage_checkout();
3020 			/* NOTREACHED */
3021 		}
3022 	}
3023 
3024 	argc -= optind;
3025 	argv += optind;
3026 
3027 	if (argc == 1) {
3028 		char *base, *dotgit;
3029 		const char *path;
3030 		repo_path = realpath(argv[0], NULL);
3031 		if (repo_path == NULL)
3032 			return got_error_from_errno2("realpath", argv[0]);
3033 		cwd = getcwd(NULL, 0);
3034 		if (cwd == NULL) {
3035 			error = got_error_from_errno("getcwd");
3036 			goto done;
3037 		}
3038 		if (path_prefix[0])
3039 			path = path_prefix;
3040 		else
3041 			path = repo_path;
3042 		error = got_path_basename(&base, path);
3043 		if (error)
3044 			goto done;
3045 		dotgit = strstr(base, ".git");
3046 		if (dotgit)
3047 			*dotgit = '\0';
3048 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
3049 			error = got_error_from_errno("asprintf");
3050 			free(base);
3051 			goto done;
3052 		}
3053 		free(base);
3054 	} else if (argc == 2) {
3055 		repo_path = realpath(argv[0], NULL);
3056 		if (repo_path == NULL) {
3057 			error = got_error_from_errno2("realpath", argv[0]);
3058 			goto done;
3059 		}
3060 		worktree_path = realpath(argv[1], NULL);
3061 		if (worktree_path == NULL) {
3062 			if (errno != ENOENT) {
3063 				error = got_error_from_errno2("realpath",
3064 				    argv[1]);
3065 				goto done;
3066 			}
3067 			worktree_path = strdup(argv[1]);
3068 			if (worktree_path == NULL) {
3069 				error = got_error_from_errno("strdup");
3070 				goto done;
3071 			}
3072 		}
3073 	} else
3074 		usage_checkout();
3075 
3076 	got_path_strip_trailing_slashes(repo_path);
3077 	got_path_strip_trailing_slashes(worktree_path);
3078 
3079 	error = got_repo_pack_fds_open(&pack_fds);
3080 	if (error != NULL)
3081 		goto done;
3082 
3083 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
3084 	if (error != NULL)
3085 		goto done;
3086 
3087 	/* Pre-create work tree path for unveil(2) */
3088 	error = got_path_mkdir(worktree_path);
3089 	if (error) {
3090 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
3091 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3092 			goto done;
3093 		if (!allow_nonempty &&
3094 		    !got_path_dir_is_empty(worktree_path)) {
3095 			error = got_error_path(worktree_path,
3096 			    GOT_ERR_DIR_NOT_EMPTY);
3097 			goto done;
3098 		}
3099 	}
3100 
3101 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
3102 	if (error)
3103 		goto done;
3104 
3105 	error = got_ref_open(&head_ref, repo, branch_name, 0);
3106 	if (error != NULL)
3107 		goto done;
3108 
3109 	error = got_worktree_init(worktree_path, head_ref, path_prefix,
3110 	    GOT_WORKTREE_GOT_DIR, repo);
3111 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3112 		goto done;
3113 
3114 	error = got_worktree_open(&worktree, worktree_path,
3115 	    GOT_WORKTREE_GOT_DIR);
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 
3136 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
3137 		    repo, worktree);
3138 		if (error != NULL)
3139 			goto done;
3140 		if (keyword_idstr != NULL) {
3141 			free(commit_id_str);
3142 			commit_id_str = keyword_idstr;
3143 		}
3144 
3145 		error = got_repo_match_object_id(&commit_id, NULL,
3146 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3147 		got_ref_list_free(&refs);
3148 		if (error)
3149 			goto done;
3150 		error = check_linear_ancestry(commit_id,
3151 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3152 		if (error != NULL) {
3153 			if (error->code == GOT_ERR_ANCESTRY) {
3154 				error = checkout_ancestry_error(
3155 				    head_ref, commit_id_str);
3156 			}
3157 			goto done;
3158 		}
3159 		error = check_same_branch(commit_id, head_ref, repo);
3160 		if (error) {
3161 			if (error->code == GOT_ERR_ANCESTRY) {
3162 				error = checkout_ancestry_error(
3163 				    head_ref, commit_id_str);
3164 			}
3165 			goto done;
3166 		}
3167 		error = got_worktree_set_base_commit_id(worktree, repo,
3168 		    commit_id);
3169 		if (error)
3170 			goto done;
3171 		/* Expand potentially abbreviated commit ID string. */
3172 		free(commit_id_str);
3173 		error = got_object_id_str(&commit_id_str, commit_id);
3174 		if (error)
3175 			goto done;
3176 	} else {
3177 		commit_id = got_object_id_dup(
3178 		    got_worktree_get_base_commit_id(worktree));
3179 		if (commit_id == NULL) {
3180 			error = got_error_from_errno("got_object_id_dup");
3181 			goto done;
3182 		}
3183 		error = got_object_id_str(&commit_id_str, commit_id);
3184 		if (error)
3185 			goto done;
3186 	}
3187 
3188 	error = got_pathlist_append(&paths, "", NULL);
3189 	if (error)
3190 		goto done;
3191 	cpa.worktree_path = worktree_path;
3192 	cpa.had_base_commit_ref_error = 0;
3193 	cpa.verbosity = verbosity;
3194 	error = got_worktree_checkout_files(worktree, &paths, repo,
3195 	    checkout_progress, &cpa, check_cancelled, NULL);
3196 	if (error != NULL)
3197 		goto done;
3198 
3199 	if (got_ref_is_symbolic(head_ref)) {
3200 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3201 		if (error)
3202 			goto done;
3203 		refname = got_ref_get_name(ref);
3204 	} else
3205 		refname = got_ref_get_name(head_ref);
3206 	printf("Checked out %s: %s\n", refname, commit_id_str);
3207 	printf("Now shut up and hack\n");
3208 	if (cpa.had_base_commit_ref_error)
3209 		show_worktree_base_ref_warning();
3210 done:
3211 	if (pack_fds) {
3212 		const struct got_error *pack_err =
3213 		    got_repo_pack_fds_close(pack_fds);
3214 		if (error == NULL)
3215 			error = pack_err;
3216 	}
3217 	if (head_ref)
3218 		got_ref_close(head_ref);
3219 	if (ref)
3220 		got_ref_close(ref);
3221 	if (repo) {
3222 		const struct got_error *close_err = got_repo_close(repo);
3223 		if (error == NULL)
3224 			error = close_err;
3225 	}
3226 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
3227 	free(commit_id_str);
3228 	free(commit_id);
3229 	free(repo_path);
3230 	free(worktree_path);
3231 	free(cwd);
3232 	return error;
3233 }
3234 
3235 struct got_update_progress_arg {
3236 	int did_something;
3237 	int conflicts;
3238 	int obstructed;
3239 	int not_updated;
3240 	int missing;
3241 	int not_deleted;
3242 	int unversioned;
3243 	int verbosity;
3244 };
3245 
3246 static void
3247 print_update_progress_stats(struct got_update_progress_arg *upa)
3248 {
3249 	if (!upa->did_something)
3250 		return;
3251 
3252 	if (upa->conflicts > 0)
3253 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3254 	if (upa->obstructed > 0)
3255 		printf("File paths obstructed by a non-regular file: %d\n",
3256 		    upa->obstructed);
3257 	if (upa->not_updated > 0)
3258 		printf("Files not updated because of existing merge "
3259 		    "conflicts: %d\n", upa->not_updated);
3260 }
3261 
3262 /*
3263  * The meaning of some status codes differs between merge-style operations and
3264  * update operations. For example, the ! status code means "file was missing"
3265  * if changes were merged into the work tree, and "missing file was restored"
3266  * if the work tree was updated. This function should be used by any operation
3267  * which merges changes into the work tree without updating the work tree.
3268  */
3269 static void
3270 print_merge_progress_stats(struct got_update_progress_arg *upa)
3271 {
3272 	if (!upa->did_something)
3273 		return;
3274 
3275 	if (upa->conflicts > 0)
3276 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3277 	if (upa->obstructed > 0)
3278 		printf("File paths obstructed by a non-regular file: %d\n",
3279 		    upa->obstructed);
3280 	if (upa->missing > 0)
3281 		printf("Files which had incoming changes but could not be "
3282 		    "found in the work tree: %d\n", upa->missing);
3283 	if (upa->not_deleted > 0)
3284 		printf("Files not deleted due to differences in deleted "
3285 		    "content: %d\n", upa->not_deleted);
3286 	if (upa->unversioned > 0)
3287 		printf("Files not merged because an unversioned file was "
3288 		    "found in the work tree: %d\n", upa->unversioned);
3289 }
3290 
3291 __dead static void
3292 usage_update(void)
3293 {
3294 	fprintf(stderr, "usage: %s update [-q] [-b branch] [-c commit] "
3295 	    "[path ...]\n", getprogname());
3296 	exit(1);
3297 }
3298 
3299 static const struct got_error *
3300 update_progress(void *arg, unsigned char status, const char *path)
3301 {
3302 	struct got_update_progress_arg *upa = arg;
3303 
3304 	if (status == GOT_STATUS_EXISTS ||
3305 	    status == GOT_STATUS_BASE_REF_ERR)
3306 		return NULL;
3307 
3308 	upa->did_something = 1;
3309 
3310 	/* Base commit bump happens silently. */
3311 	if (status == GOT_STATUS_BUMP_BASE)
3312 		return NULL;
3313 
3314 	if (status == GOT_STATUS_CONFLICT)
3315 		upa->conflicts++;
3316 	if (status == GOT_STATUS_OBSTRUCTED)
3317 		upa->obstructed++;
3318 	if (status == GOT_STATUS_CANNOT_UPDATE)
3319 		upa->not_updated++;
3320 	if (status == GOT_STATUS_MISSING)
3321 		upa->missing++;
3322 	if (status == GOT_STATUS_CANNOT_DELETE)
3323 		upa->not_deleted++;
3324 	if (status == GOT_STATUS_UNVERSIONED)
3325 		upa->unversioned++;
3326 
3327 	while (path[0] == '/')
3328 		path++;
3329 	if (upa->verbosity >= 0)
3330 		printf("%c  %s\n", status, path);
3331 
3332 	return NULL;
3333 }
3334 
3335 static const struct got_error *
3336 switch_head_ref(struct got_reference *head_ref,
3337     struct got_object_id *commit_id, struct got_worktree *worktree,
3338     struct got_repository *repo)
3339 {
3340 	const struct got_error *err = NULL;
3341 	char *base_id_str;
3342 	int ref_has_moved = 0;
3343 
3344 	/* Trivial case: switching between two different references. */
3345 	if (strcmp(got_ref_get_name(head_ref),
3346 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3347 		printf("Switching work tree from %s to %s\n",
3348 		    got_worktree_get_head_ref_name(worktree),
3349 		    got_ref_get_name(head_ref));
3350 		return got_worktree_set_head_ref(worktree, head_ref);
3351 	}
3352 
3353 	err = check_linear_ancestry(commit_id,
3354 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3355 	if (err) {
3356 		if (err->code != GOT_ERR_ANCESTRY)
3357 			return err;
3358 		ref_has_moved = 1;
3359 	}
3360 	if (!ref_has_moved)
3361 		return NULL;
3362 
3363 	/* Switching to a rebased branch with the same reference name. */
3364 	err = got_object_id_str(&base_id_str,
3365 	    got_worktree_get_base_commit_id(worktree));
3366 	if (err)
3367 		return err;
3368 	printf("Reference %s now points at a different branch\n",
3369 	    got_worktree_get_head_ref_name(worktree));
3370 	printf("Switching work tree from %s to %s\n", base_id_str,
3371 	    got_worktree_get_head_ref_name(worktree));
3372 	return NULL;
3373 }
3374 
3375 static const struct got_error *
3376 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3377 {
3378 	const struct got_error *err;
3379 	int in_progress;
3380 
3381 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3382 	if (err)
3383 		return err;
3384 	if (in_progress)
3385 		return got_error(GOT_ERR_REBASING);
3386 
3387 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3388 	if (err)
3389 		return err;
3390 	if (in_progress)
3391 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3392 
3393 	return NULL;
3394 }
3395 
3396 static const struct got_error *
3397 check_merge_in_progress(struct got_worktree *worktree,
3398     struct got_repository *repo)
3399 {
3400 	const struct got_error *err;
3401 	int in_progress;
3402 
3403 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3404 	if (err)
3405 		return err;
3406 	if (in_progress)
3407 		return got_error(GOT_ERR_MERGE_BUSY);
3408 
3409 	return NULL;
3410 }
3411 
3412 static const struct got_error *
3413 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3414     char *argv[], struct got_worktree *worktree)
3415 {
3416 	const struct got_error *err = NULL;
3417 	char *path;
3418 	struct got_pathlist_entry *new;
3419 	int i;
3420 
3421 	if (argc == 0) {
3422 		path = strdup("");
3423 		if (path == NULL)
3424 			return got_error_from_errno("strdup");
3425 		return got_pathlist_append(paths, path, NULL);
3426 	}
3427 
3428 	for (i = 0; i < argc; i++) {
3429 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3430 		if (err)
3431 			break;
3432 		err = got_pathlist_insert(&new, paths, path, NULL);
3433 		if (err || new == NULL /* duplicate */) {
3434 			free(path);
3435 			if (err)
3436 				break;
3437 		}
3438 	}
3439 
3440 	return err;
3441 }
3442 
3443 static const struct got_error *
3444 wrap_not_worktree_error(const struct got_error *orig_err,
3445     const char *cmdname, const char *path)
3446 {
3447 	const struct got_error *err;
3448 	struct got_repository *repo;
3449 	static char msg[512];
3450 	int *pack_fds = NULL;
3451 
3452 	err = got_repo_pack_fds_open(&pack_fds);
3453 	if (err)
3454 		return err;
3455 
3456 	err = got_repo_open(&repo, path, NULL, pack_fds);
3457 	if (err)
3458 		return orig_err;
3459 
3460 	snprintf(msg, sizeof(msg),
3461 	    "'got %s' needs a work tree in addition to a git repository\n"
3462 	    "Work trees can be checked out from this Git repository with "
3463 	    "'got checkout'.\n"
3464 	    "The got(1) manual page contains more information.", cmdname);
3465 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3466 	if (repo) {
3467 		const struct got_error *close_err = got_repo_close(repo);
3468 		if (err == NULL)
3469 			err = close_err;
3470 	}
3471 	if (pack_fds) {
3472 		const struct got_error *pack_err =
3473 		    got_repo_pack_fds_close(pack_fds);
3474 		if (err == NULL)
3475 			err = pack_err;
3476 	}
3477 	return err;
3478 }
3479 
3480 static const struct got_error *
3481 cmd_update(int argc, char *argv[])
3482 {
3483 	const struct got_error *error = NULL;
3484 	struct got_repository *repo = NULL;
3485 	struct got_worktree *worktree = NULL;
3486 	char *worktree_path = NULL;
3487 	struct got_object_id *commit_id = NULL;
3488 	char *commit_id_str = NULL;
3489 	const char *branch_name = NULL;
3490 	struct got_reference *head_ref = NULL;
3491 	struct got_pathlist_head paths;
3492 	struct got_pathlist_entry *pe;
3493 	int ch, verbosity = 0;
3494 	struct got_update_progress_arg upa;
3495 	int *pack_fds = NULL;
3496 
3497 	TAILQ_INIT(&paths);
3498 
3499 #ifndef PROFILE
3500 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3501 	    "unveil", NULL) == -1)
3502 		err(1, "pledge");
3503 #endif
3504 
3505 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3506 		switch (ch) {
3507 		case 'b':
3508 			branch_name = optarg;
3509 			break;
3510 		case 'c':
3511 			commit_id_str = strdup(optarg);
3512 			if (commit_id_str == NULL)
3513 				return got_error_from_errno("strdup");
3514 			break;
3515 		case 'q':
3516 			verbosity = -1;
3517 			break;
3518 		default:
3519 			usage_update();
3520 			/* NOTREACHED */
3521 		}
3522 	}
3523 
3524 	argc -= optind;
3525 	argv += optind;
3526 
3527 	worktree_path = getcwd(NULL, 0);
3528 	if (worktree_path == NULL) {
3529 		error = got_error_from_errno("getcwd");
3530 		goto done;
3531 	}
3532 
3533 	error = got_repo_pack_fds_open(&pack_fds);
3534 	if (error != NULL)
3535 		goto done;
3536 
3537 	error = got_worktree_open(&worktree, worktree_path,
3538 	    GOT_WORKTREE_GOT_DIR);
3539 	if (error) {
3540 		if (error->code == GOT_ERR_NOT_WORKTREE)
3541 			error = wrap_not_worktree_error(error, "update",
3542 			    worktree_path);
3543 		goto done;
3544 	}
3545 
3546 	error = check_rebase_or_histedit_in_progress(worktree);
3547 	if (error)
3548 		goto done;
3549 
3550 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3551 	    NULL, pack_fds);
3552 	if (error != NULL)
3553 		goto done;
3554 
3555 	error = apply_unveil(got_repo_get_path(repo), 0,
3556 	    got_worktree_get_root_path(worktree));
3557 	if (error)
3558 		goto done;
3559 
3560 	error = check_merge_in_progress(worktree, repo);
3561 	if (error)
3562 		goto done;
3563 
3564 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3565 	if (error)
3566 		goto done;
3567 
3568 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3569 	    got_worktree_get_head_ref_name(worktree), 0);
3570 	if (error != NULL)
3571 		goto done;
3572 	if (commit_id_str == NULL) {
3573 		error = got_ref_resolve(&commit_id, repo, head_ref);
3574 		if (error != NULL)
3575 			goto done;
3576 		error = got_object_id_str(&commit_id_str, commit_id);
3577 		if (error != NULL)
3578 			goto done;
3579 	} else {
3580 		struct got_reflist_head refs;
3581 		char *keyword_idstr = NULL;
3582 
3583 		TAILQ_INIT(&refs);
3584 
3585 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3586 		    NULL);
3587 		if (error)
3588 			goto done;
3589 
3590 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
3591 		    repo, worktree);
3592 		if (error != NULL)
3593 			goto done;
3594 		if (keyword_idstr != NULL) {
3595 			free(commit_id_str);
3596 			commit_id_str = keyword_idstr;
3597 		}
3598 
3599 		error = got_repo_match_object_id(&commit_id, NULL,
3600 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3601 		got_ref_list_free(&refs);
3602 		free(commit_id_str);
3603 		commit_id_str = NULL;
3604 		if (error)
3605 			goto done;
3606 		error = got_object_id_str(&commit_id_str, commit_id);
3607 		if (error)
3608 			goto done;
3609 	}
3610 
3611 	if (branch_name) {
3612 		struct got_object_id *head_commit_id;
3613 		TAILQ_FOREACH(pe, &paths, entry) {
3614 			if (pe->path_len == 0)
3615 				continue;
3616 			error = got_error_msg(GOT_ERR_BAD_PATH,
3617 			    "switching between branches requires that "
3618 			    "the entire work tree gets updated");
3619 			goto done;
3620 		}
3621 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3622 		if (error)
3623 			goto done;
3624 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3625 		    repo);
3626 		free(head_commit_id);
3627 		if (error != NULL)
3628 			goto done;
3629 		error = check_same_branch(commit_id, head_ref, repo);
3630 		if (error)
3631 			goto done;
3632 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3633 		if (error)
3634 			goto done;
3635 	} else {
3636 		error = check_linear_ancestry(commit_id,
3637 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3638 		if (error != NULL) {
3639 			if (error->code == GOT_ERR_ANCESTRY)
3640 				error = got_error(GOT_ERR_BRANCH_MOVED);
3641 			goto done;
3642 		}
3643 		error = check_same_branch(commit_id, head_ref, repo);
3644 		if (error)
3645 			goto done;
3646 	}
3647 
3648 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3649 	    commit_id) != 0) {
3650 		error = got_worktree_set_base_commit_id(worktree, repo,
3651 		    commit_id);
3652 		if (error)
3653 			goto done;
3654 	}
3655 
3656 	memset(&upa, 0, sizeof(upa));
3657 	upa.verbosity = verbosity;
3658 	error = got_worktree_checkout_files(worktree, &paths, repo,
3659 	    update_progress, &upa, check_cancelled, NULL);
3660 	if (error != NULL)
3661 		goto done;
3662 
3663 	if (upa.did_something) {
3664 		printf("Updated to %s: %s\n",
3665 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3666 	} else
3667 		printf("Already up-to-date\n");
3668 
3669 	print_update_progress_stats(&upa);
3670 done:
3671 	if (pack_fds) {
3672 		const struct got_error *pack_err =
3673 		    got_repo_pack_fds_close(pack_fds);
3674 		if (error == NULL)
3675 			error = pack_err;
3676 	}
3677 	if (repo) {
3678 		const struct got_error *close_err = got_repo_close(repo);
3679 		if (error == NULL)
3680 			error = close_err;
3681 	}
3682 	if (head_ref != NULL)
3683 		got_ref_close(head_ref);
3684 	free(worktree_path);
3685 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
3686 	free(commit_id);
3687 	free(commit_id_str);
3688 	return error;
3689 }
3690 
3691 static const struct got_error *
3692 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3693     const char *path, int diff_context, int ignore_whitespace,
3694     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3695     struct got_repository *repo, FILE *outfile)
3696 {
3697 	const struct got_error *err = NULL;
3698 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3699 	FILE *f1 = NULL, *f2 = NULL;
3700 	int fd1 = -1, fd2 = -1;
3701 
3702 	fd1 = got_opentempfd();
3703 	if (fd1 == -1)
3704 		return got_error_from_errno("got_opentempfd");
3705 	fd2 = got_opentempfd();
3706 	if (fd2 == -1) {
3707 		err = got_error_from_errno("got_opentempfd");
3708 		goto done;
3709 	}
3710 
3711 	if (blob_id1) {
3712 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3713 		    fd1);
3714 		if (err)
3715 			goto done;
3716 	}
3717 
3718 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3719 	if (err)
3720 		goto done;
3721 
3722 	f1 = got_opentemp();
3723 	if (f1 == NULL) {
3724 		err = got_error_from_errno("got_opentemp");
3725 		goto done;
3726 	}
3727 	f2 = got_opentemp();
3728 	if (f2 == NULL) {
3729 		err = got_error_from_errno("got_opentemp");
3730 		goto done;
3731 	}
3732 
3733 	while (path[0] == '/')
3734 		path++;
3735 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3736 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3737 	    force_text_diff, dsa, outfile);
3738 done:
3739 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3740 		err = got_error_from_errno("close");
3741 	if (blob1)
3742 		got_object_blob_close(blob1);
3743 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3744 		err = got_error_from_errno("close");
3745 	if (blob2)
3746 		got_object_blob_close(blob2);
3747 	if (f1 && fclose(f1) == EOF && err == NULL)
3748 		err = got_error_from_errno("fclose");
3749 	if (f2 && fclose(f2) == EOF && err == NULL)
3750 		err = got_error_from_errno("fclose");
3751 	return err;
3752 }
3753 
3754 static const struct got_error *
3755 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3756     const char *path, int diff_context, int ignore_whitespace,
3757     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3758     struct got_repository *repo, FILE *outfile)
3759 {
3760 	const struct got_error *err = NULL;
3761 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3762 	struct got_diff_blob_output_unidiff_arg arg;
3763 	FILE *f1 = NULL, *f2 = NULL;
3764 	int fd1 = -1, fd2 = -1;
3765 
3766 	if (tree_id1) {
3767 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3768 		if (err)
3769 			goto done;
3770 		fd1 = got_opentempfd();
3771 		if (fd1 == -1) {
3772 			err = got_error_from_errno("got_opentempfd");
3773 			goto done;
3774 		}
3775 	}
3776 
3777 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3778 	if (err)
3779 		goto done;
3780 
3781 	f1 = got_opentemp();
3782 	if (f1 == NULL) {
3783 		err = got_error_from_errno("got_opentemp");
3784 		goto done;
3785 	}
3786 
3787 	f2 = got_opentemp();
3788 	if (f2 == NULL) {
3789 		err = got_error_from_errno("got_opentemp");
3790 		goto done;
3791 	}
3792 	fd2 = got_opentempfd();
3793 	if (fd2 == -1) {
3794 		err = got_error_from_errno("got_opentempfd");
3795 		goto done;
3796 	}
3797 	arg.diff_context = diff_context;
3798 	arg.ignore_whitespace = ignore_whitespace;
3799 	arg.force_text_diff = force_text_diff;
3800 	arg.diffstat = dsa;
3801 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3802 	arg.outfile = outfile;
3803 	arg.lines = NULL;
3804 	arg.nlines = 0;
3805 	while (path[0] == '/')
3806 		path++;
3807 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3808 	    got_diff_blob_output_unidiff, &arg, 1);
3809 done:
3810 	if (tree1)
3811 		got_object_tree_close(tree1);
3812 	if (tree2)
3813 		got_object_tree_close(tree2);
3814 	if (f1 && fclose(f1) == EOF && err == NULL)
3815 		err = got_error_from_errno("fclose");
3816 	if (f2 && fclose(f2) == EOF && err == NULL)
3817 		err = got_error_from_errno("fclose");
3818 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3819 		err = got_error_from_errno("close");
3820 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3821 		err = got_error_from_errno("close");
3822 	return err;
3823 }
3824 
3825 static const struct got_error *
3826 get_changed_paths(struct got_pathlist_head *paths,
3827     struct got_commit_object *commit, struct got_repository *repo,
3828     struct got_diffstat_cb_arg *dsa)
3829 {
3830 	const struct got_error *err = NULL;
3831 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3832 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3833 	struct got_object_qid *qid;
3834 	got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
3835 	FILE *f1 = NULL, *f2 = NULL;
3836 	int fd1 = -1, fd2 = -1;
3837 
3838 	if (dsa) {
3839 		cb = got_diff_tree_compute_diffstat;
3840 
3841 		f1 = got_opentemp();
3842 		if (f1 == NULL) {
3843 			err = got_error_from_errno("got_opentemp");
3844 			goto done;
3845 		}
3846 		f2 = got_opentemp();
3847 		if (f2 == NULL) {
3848 			err = got_error_from_errno("got_opentemp");
3849 			goto done;
3850 		}
3851 		fd1 = got_opentempfd();
3852 		if (fd1 == -1) {
3853 			err = got_error_from_errno("got_opentempfd");
3854 			goto done;
3855 		}
3856 		fd2 = got_opentempfd();
3857 		if (fd2 == -1) {
3858 			err = got_error_from_errno("got_opentempfd");
3859 			goto done;
3860 		}
3861 	}
3862 
3863 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3864 	if (qid != NULL) {
3865 		struct got_commit_object *pcommit;
3866 		err = got_object_open_as_commit(&pcommit, repo,
3867 		    &qid->id);
3868 		if (err)
3869 			return err;
3870 
3871 		tree_id1 = got_object_id_dup(
3872 		    got_object_commit_get_tree_id(pcommit));
3873 		if (tree_id1 == NULL) {
3874 			got_object_commit_close(pcommit);
3875 			return got_error_from_errno("got_object_id_dup");
3876 		}
3877 		got_object_commit_close(pcommit);
3878 
3879 	}
3880 
3881 	if (tree_id1) {
3882 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3883 		if (err)
3884 			goto done;
3885 	}
3886 
3887 	tree_id2 = got_object_commit_get_tree_id(commit);
3888 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3889 	if (err)
3890 		goto done;
3891 
3892 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
3893 	    cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
3894 done:
3895 	if (tree1)
3896 		got_object_tree_close(tree1);
3897 	if (tree2)
3898 		got_object_tree_close(tree2);
3899 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3900 		err = got_error_from_errno("close");
3901 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3902 		err = got_error_from_errno("close");
3903 	if (f1 && fclose(f1) == EOF && err == NULL)
3904 		err = got_error_from_errno("fclose");
3905 	if (f2 && fclose(f2) == EOF && err == NULL)
3906 		err = got_error_from_errno("fclose");
3907 	free(tree_id1);
3908 	return err;
3909 }
3910 
3911 static const struct got_error *
3912 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3913     const char *path, int diff_context, struct got_diffstat_cb_arg *dsa,
3914     struct got_repository *repo, FILE *outfile)
3915 {
3916 	const struct got_error *err = NULL;
3917 	struct got_commit_object *pcommit = NULL;
3918 	char *id_str1 = NULL, *id_str2 = NULL;
3919 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3920 	struct got_object_qid *qid;
3921 
3922 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3923 	if (qid != NULL) {
3924 		err = got_object_open_as_commit(&pcommit, repo,
3925 		    &qid->id);
3926 		if (err)
3927 			return err;
3928 		err = got_object_id_str(&id_str1, &qid->id);
3929 		if (err)
3930 			goto done;
3931 	}
3932 
3933 	err = got_object_id_str(&id_str2, id);
3934 	if (err)
3935 		goto done;
3936 
3937 	if (path && path[0] != '\0') {
3938 		int obj_type;
3939 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3940 		if (err)
3941 			goto done;
3942 		if (pcommit) {
3943 			err = got_object_id_by_path(&obj_id1, repo,
3944 			    pcommit, path);
3945 			if (err) {
3946 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3947 					free(obj_id2);
3948 					goto done;
3949 				}
3950 			}
3951 		}
3952 		err = got_object_get_type(&obj_type, repo, obj_id2);
3953 		if (err) {
3954 			free(obj_id2);
3955 			goto done;
3956 		}
3957 		fprintf(outfile,
3958 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3959 		fprintf(outfile, "commit - %s\n",
3960 		    id_str1 ? id_str1 : "/dev/null");
3961 		fprintf(outfile, "commit + %s\n", id_str2);
3962 		switch (obj_type) {
3963 		case GOT_OBJ_TYPE_BLOB:
3964 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3965 			    0, 0, dsa, repo, outfile);
3966 			break;
3967 		case GOT_OBJ_TYPE_TREE:
3968 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3969 			    0, 0, dsa, repo, outfile);
3970 			break;
3971 		default:
3972 			err = got_error(GOT_ERR_OBJ_TYPE);
3973 			break;
3974 		}
3975 		free(obj_id1);
3976 		free(obj_id2);
3977 	} else {
3978 		obj_id2 = got_object_commit_get_tree_id(commit);
3979 		if (pcommit)
3980 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3981 		fprintf(outfile,
3982 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3983 		fprintf(outfile, "commit - %s\n",
3984 		    id_str1 ? id_str1 : "/dev/null");
3985 		fprintf(outfile, "commit + %s\n", id_str2);
3986 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3987 		    dsa, repo, outfile);
3988 	}
3989 done:
3990 	free(id_str1);
3991 	free(id_str2);
3992 	if (pcommit)
3993 		got_object_commit_close(pcommit);
3994 	return err;
3995 }
3996 
3997 static char *
3998 get_datestr(time_t *time, char *datebuf)
3999 {
4000 	struct tm mytm, *tm;
4001 	char *p, *s;
4002 
4003 	tm = gmtime_r(time, &mytm);
4004 	if (tm == NULL)
4005 		return NULL;
4006 	s = asctime_r(tm, datebuf);
4007 	if (s == NULL)
4008 		return NULL;
4009 	p = strchr(s, '\n');
4010 	if (p)
4011 		*p = '\0';
4012 	return s;
4013 }
4014 
4015 static const struct got_error *
4016 match_commit(int *have_match, struct got_object_id *id,
4017     struct got_commit_object *commit, regex_t *regex)
4018 {
4019 	const struct got_error *err = NULL;
4020 	regmatch_t regmatch;
4021 	char *id_str = NULL, *logmsg = NULL;
4022 
4023 	*have_match = 0;
4024 
4025 	err = got_object_id_str(&id_str, id);
4026 	if (err)
4027 		return err;
4028 
4029 	err = got_object_commit_get_logmsg(&logmsg, commit);
4030 	if (err)
4031 		goto done;
4032 
4033 	if (regexec(regex, got_object_commit_get_author(commit), 1,
4034 	    &regmatch, 0) == 0 ||
4035 	    regexec(regex, got_object_commit_get_committer(commit), 1,
4036 	    &regmatch, 0) == 0 ||
4037 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
4038 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
4039 		*have_match = 1;
4040 done:
4041 	free(id_str);
4042 	free(logmsg);
4043 	return err;
4044 }
4045 
4046 static void
4047 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
4048     regex_t *regex)
4049 {
4050 	regmatch_t regmatch;
4051 	struct got_pathlist_entry *pe;
4052 
4053 	*have_match = 0;
4054 
4055 	TAILQ_FOREACH(pe, changed_paths, entry) {
4056 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
4057 			*have_match = 1;
4058 			break;
4059 		}
4060 	}
4061 }
4062 
4063 static const struct got_error *
4064 match_patch(int *have_match, struct got_commit_object *commit,
4065     struct got_object_id *id, const char *path, int diff_context,
4066     struct got_repository *repo, regex_t *regex, FILE *f)
4067 {
4068 	const struct got_error *err = NULL;
4069 	char *line = NULL;
4070 	size_t linesize = 0;
4071 	regmatch_t regmatch;
4072 
4073 	*have_match = 0;
4074 
4075 	err = got_opentemp_truncate(f);
4076 	if (err)
4077 		return err;
4078 
4079 	err = print_patch(commit, id, path, diff_context, NULL, repo, f);
4080 	if (err)
4081 		goto done;
4082 
4083 	if (fseeko(f, 0L, SEEK_SET) == -1) {
4084 		err = got_error_from_errno("fseeko");
4085 		goto done;
4086 	}
4087 
4088 	while (getline(&line, &linesize, f) != -1) {
4089 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
4090 			*have_match = 1;
4091 			break;
4092 		}
4093 	}
4094 done:
4095 	free(line);
4096 	return err;
4097 }
4098 
4099 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
4100 
4101 static const struct got_error*
4102 build_refs_str(char **refs_str, struct got_reflist_head *refs,
4103     struct got_object_id *id, struct got_repository *repo,
4104     int local_only)
4105 {
4106 	static const struct got_error *err = NULL;
4107 	struct got_reflist_entry *re;
4108 	char *s;
4109 	const char *name;
4110 
4111 	*refs_str = NULL;
4112 
4113 	TAILQ_FOREACH(re, refs, entry) {
4114 		struct got_tag_object *tag = NULL;
4115 		struct got_object_id *ref_id;
4116 		int cmp;
4117 
4118 		name = got_ref_get_name(re->ref);
4119 		if (strcmp(name, GOT_REF_HEAD) == 0)
4120 			continue;
4121 		if (strncmp(name, "refs/", 5) == 0)
4122 			name += 5;
4123 		if (strncmp(name, "got/", 4) == 0)
4124 			continue;
4125 		if (strncmp(name, "heads/", 6) == 0)
4126 			name += 6;
4127 		if (strncmp(name, "remotes/", 8) == 0) {
4128 			if (local_only)
4129 				continue;
4130 			name += 8;
4131 			s = strstr(name, "/" GOT_REF_HEAD);
4132 			if (s != NULL && strcmp(s, "/" GOT_REF_HEAD) == 0)
4133 				continue;
4134 		}
4135 		err = got_ref_resolve(&ref_id, repo, re->ref);
4136 		if (err)
4137 			break;
4138 		if (strncmp(name, "tags/", 5) == 0) {
4139 			err = got_object_open_as_tag(&tag, repo, ref_id);
4140 			if (err) {
4141 				if (err->code != GOT_ERR_OBJ_TYPE) {
4142 					free(ref_id);
4143 					break;
4144 				}
4145 				/* Ref points at something other than a tag. */
4146 				err = NULL;
4147 				tag = NULL;
4148 			}
4149 		}
4150 		cmp = got_object_id_cmp(tag ?
4151 		    got_object_tag_get_object_id(tag) : ref_id, id);
4152 		free(ref_id);
4153 		if (tag)
4154 			got_object_tag_close(tag);
4155 		if (cmp != 0)
4156 			continue;
4157 		s = *refs_str;
4158 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
4159 		    s ? ", " : "", name) == -1) {
4160 			err = got_error_from_errno("asprintf");
4161 			free(s);
4162 			*refs_str = NULL;
4163 			break;
4164 		}
4165 		free(s);
4166 	}
4167 
4168 	return err;
4169 }
4170 
4171 static const struct got_error *
4172 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
4173     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
4174 {
4175 	const struct got_error *err = NULL;
4176 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
4177 	char *comma, *s, *nl;
4178 	struct got_reflist_head *refs;
4179 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
4180 	struct tm tm;
4181 	time_t committer_time;
4182 
4183 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4184 	if (refs) {
4185 		err = build_refs_str(&ref_str, refs, id, repo, 1);
4186 		if (err)
4187 			return err;
4188 
4189 		/* Display the first matching ref only. */
4190 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
4191 			*comma = '\0';
4192 	}
4193 
4194 	if (ref_str == NULL) {
4195 		err = got_object_id_str(&id_str, id);
4196 		if (err)
4197 			return err;
4198 	}
4199 
4200 	committer_time = got_object_commit_get_committer_time(commit);
4201 	if (gmtime_r(&committer_time, &tm) == NULL) {
4202 		err = got_error_from_errno("gmtime_r");
4203 		goto done;
4204 	}
4205 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
4206 		err = got_error(GOT_ERR_NO_SPACE);
4207 		goto done;
4208 	}
4209 
4210 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4211 	if (err)
4212 		goto done;
4213 
4214 	s = logmsg0;
4215 	while (isspace((unsigned char)s[0]))
4216 		s++;
4217 
4218 	nl = strchr(s, '\n');
4219 	if (nl) {
4220 		*nl = '\0';
4221 	}
4222 
4223 	if (ref_str)
4224 		printf("%s%-7s %s\n", datebuf, ref_str, s);
4225 	else
4226 		printf("%s%.7s %s\n", datebuf, id_str, s);
4227 
4228 	if (fflush(stdout) != 0 && err == NULL)
4229 		err = got_error_from_errno("fflush");
4230 done:
4231 	free(id_str);
4232 	free(ref_str);
4233 	free(logmsg0);
4234 	return err;
4235 }
4236 
4237 static const struct got_error *
4238 print_diffstat(struct got_diffstat_cb_arg *dsa, const char *header)
4239 {
4240 	struct got_pathlist_entry *pe;
4241 
4242 	if (header != NULL)
4243 		printf("%s\n", header);
4244 
4245 	TAILQ_FOREACH(pe, dsa->paths, entry) {
4246 		struct got_diff_changed_path *cp = pe->data;
4247 		int pad = dsa->max_path_len - pe->path_len + 1;
4248 
4249 		printf(" %c  %s%*c | %*d+ %*d-\n", cp->status, pe->path, pad,
4250 		    ' ', dsa->add_cols + 1, cp->add, dsa->rm_cols + 1, cp->rm);
4251 	}
4252 	printf("\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
4253 	    dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
4254 	    dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
4255 
4256 	if (fflush(stdout) != 0)
4257 		return got_error_from_errno("fflush");
4258 
4259 	return NULL;
4260 }
4261 
4262 static const struct got_error *
4263 printfile(FILE *f)
4264 {
4265 	char	buf[8192];
4266 	size_t	r;
4267 
4268 	if (fseeko(f, 0L, SEEK_SET) == -1)
4269 		return got_error_from_errno("fseek");
4270 
4271 	for (;;) {
4272 		r = fread(buf, 1, sizeof(buf), f);
4273 		if (r == 0) {
4274 			if (ferror(f))
4275 				return got_error_from_errno("fread");
4276 			if (feof(f))
4277 				break;
4278 		}
4279 		if (fwrite(buf, 1, r, stdout) != r)
4280 			return got_ferror(stdout, GOT_ERR_IO);
4281 	}
4282 
4283 	return NULL;
4284 }
4285 
4286 static const struct got_error *
4287 print_commit(struct got_commit_object *commit, struct got_object_id *id,
4288     struct got_repository *repo, const char *path,
4289     struct got_pathlist_head *changed_paths,
4290     struct got_diffstat_cb_arg *diffstat, int show_patch, int diff_context,
4291     struct got_reflist_object_id_map *refs_idmap, const char *custom_refs_str,
4292     const char *prefix)
4293 {
4294 	const struct got_error *err = NULL;
4295 	FILE *f = NULL;
4296 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
4297 	char datebuf[26];
4298 	time_t committer_time;
4299 	const char *author, *committer;
4300 	char *refs_str = NULL;
4301 
4302 	err = got_object_id_str(&id_str, id);
4303 	if (err)
4304 		return err;
4305 
4306 	if (custom_refs_str == NULL) {
4307 		struct got_reflist_head *refs;
4308 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4309 		if (refs) {
4310 			err = build_refs_str(&refs_str, refs, id, repo, 0);
4311 			if (err)
4312 				goto done;
4313 		}
4314 	}
4315 
4316 	printf(GOT_COMMIT_SEP_STR);
4317 	if (custom_refs_str)
4318 		printf("%s %s (%s)\n", prefix ? prefix : "commit", id_str,
4319 		    custom_refs_str);
4320 	else
4321 		printf("%s %s%s%s%s\n", prefix ? prefix : "commit", id_str,
4322 		    refs_str ? " (" : "", refs_str ? refs_str : "",
4323 		    refs_str ? ")" : "");
4324 	free(id_str);
4325 	id_str = NULL;
4326 	free(refs_str);
4327 	refs_str = NULL;
4328 	printf("from: %s\n", got_object_commit_get_author(commit));
4329 	author = got_object_commit_get_author(commit);
4330 	committer = got_object_commit_get_committer(commit);
4331 	if (strcmp(author, committer) != 0)
4332 		printf("via: %s\n", committer);
4333 	committer_time = got_object_commit_get_committer_time(commit);
4334 	datestr = get_datestr(&committer_time, datebuf);
4335 	if (datestr)
4336 		printf("date: %s UTC\n", datestr);
4337 	if (got_object_commit_get_nparents(commit) > 1) {
4338 		const struct got_object_id_queue *parent_ids;
4339 		struct got_object_qid *qid;
4340 		int n = 1;
4341 		parent_ids = got_object_commit_get_parent_ids(commit);
4342 		STAILQ_FOREACH(qid, parent_ids, entry) {
4343 			err = got_object_id_str(&id_str, &qid->id);
4344 			if (err)
4345 				goto done;
4346 			printf("parent %d: %s\n", n++, id_str);
4347 			free(id_str);
4348 			id_str = NULL;
4349 		}
4350 	}
4351 
4352 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4353 	if (err)
4354 		goto done;
4355 
4356 	logmsg = logmsg0;
4357 	do {
4358 		line = strsep(&logmsg, "\n");
4359 		if (line)
4360 			printf(" %s\n", line);
4361 	} while (line);
4362 	free(logmsg0);
4363 
4364 	if (changed_paths && diffstat == NULL) {
4365 		struct got_pathlist_entry *pe;
4366 
4367 		TAILQ_FOREACH(pe, changed_paths, entry) {
4368 			struct got_diff_changed_path *cp = pe->data;
4369 
4370 			printf(" %c  %s\n", cp->status, pe->path);
4371 		}
4372 		printf("\n");
4373 	}
4374 	if (show_patch) {
4375 		if (diffstat) {
4376 			f = got_opentemp();
4377 			if (f == NULL) {
4378 				err = got_error_from_errno("got_opentemp");
4379 				goto done;
4380 			}
4381 		}
4382 
4383 		err = print_patch(commit, id, path, diff_context, diffstat,
4384 		    repo, diffstat == NULL ? stdout : f);
4385 		if (err)
4386 			goto done;
4387 	}
4388 	if (diffstat) {
4389 		err = print_diffstat(diffstat, NULL);
4390 		if (err)
4391 			goto done;
4392 		if (show_patch) {
4393 			err = printfile(f);
4394 			if (err)
4395 				goto done;
4396 		}
4397 	}
4398 	if (show_patch)
4399 		printf("\n");
4400 
4401 	if (fflush(stdout) != 0 && err == NULL)
4402 		err = got_error_from_errno("fflush");
4403 done:
4404 	if (f && fclose(f) == EOF && err == NULL)
4405 		err = got_error_from_errno("fclose");
4406 	free(id_str);
4407 	free(refs_str);
4408 	return err;
4409 }
4410 
4411 static const struct got_error *
4412 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
4413     struct got_repository *repo, const char *path, int show_changed_paths,
4414     int show_diffstat, int show_patch, const char *search_pattern,
4415     int diff_context, int limit, int log_branches, int reverse_display_order,
4416     struct got_reflist_object_id_map *refs_idmap, int one_line,
4417     FILE *tmpfile)
4418 {
4419 	const struct got_error *err;
4420 	struct got_commit_graph *graph;
4421 	regex_t regex;
4422 	int have_match;
4423 	struct got_object_id_queue reversed_commits;
4424 	struct got_object_qid *qid;
4425 	struct got_commit_object *commit;
4426 	struct got_pathlist_head changed_paths;
4427 
4428 	STAILQ_INIT(&reversed_commits);
4429 	TAILQ_INIT(&changed_paths);
4430 
4431 	if (search_pattern && regcomp(&regex, search_pattern,
4432 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
4433 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
4434 
4435 	err = got_commit_graph_open(&graph, path, !log_branches);
4436 	if (err)
4437 		return err;
4438 	err = got_commit_graph_iter_start(graph, root_id, repo,
4439 	    check_cancelled, NULL);
4440 	if (err)
4441 		goto done;
4442 	for (;;) {
4443 		struct got_object_id id;
4444 		struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4445 		    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4446 
4447 		if (sigint_received || sigpipe_received)
4448 			break;
4449 
4450 		err = got_commit_graph_iter_next(&id, graph, repo,
4451 		    check_cancelled, NULL);
4452 		if (err) {
4453 			if (err->code == GOT_ERR_ITER_COMPLETED)
4454 				err = NULL;
4455 			break;
4456 		}
4457 
4458 		err = got_object_open_as_commit(&commit, repo, &id);
4459 		if (err)
4460 			break;
4461 
4462 		if ((show_changed_paths || (show_diffstat && !show_patch))
4463 		    && !reverse_display_order) {
4464 			err = get_changed_paths(&changed_paths, commit, repo,
4465 			    show_diffstat ? &dsa : NULL);
4466 			if (err)
4467 				break;
4468 		}
4469 
4470 		if (search_pattern) {
4471 			err = match_commit(&have_match, &id, commit, &regex);
4472 			if (err) {
4473 				got_object_commit_close(commit);
4474 				break;
4475 			}
4476 			if (have_match == 0 && show_changed_paths)
4477 				match_changed_paths(&have_match,
4478 				    &changed_paths, &regex);
4479 			if (have_match == 0 && show_patch) {
4480 				err = match_patch(&have_match, commit, &id,
4481 				    path, diff_context, repo, &regex, tmpfile);
4482 				if (err)
4483 					break;
4484 			}
4485 			if (have_match == 0) {
4486 				got_object_commit_close(commit);
4487 				got_pathlist_free(&changed_paths,
4488 				    GOT_PATHLIST_FREE_ALL);
4489 				continue;
4490 			}
4491 		}
4492 
4493 		if (reverse_display_order) {
4494 			err = got_object_qid_alloc(&qid, &id);
4495 			if (err)
4496 				break;
4497 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
4498 			got_object_commit_close(commit);
4499 		} else {
4500 			if (one_line)
4501 				err = print_commit_oneline(commit, &id,
4502 				    repo, refs_idmap);
4503 			else
4504 				err = print_commit(commit, &id, repo, path,
4505 				    (show_changed_paths || show_diffstat) ?
4506 				    &changed_paths : NULL,
4507 				    show_diffstat ? &dsa : NULL, show_patch,
4508 				    diff_context, refs_idmap, NULL, NULL);
4509 			got_object_commit_close(commit);
4510 			if (err)
4511 				break;
4512 		}
4513 		if ((limit && --limit == 0) ||
4514 		    (end_id && got_object_id_cmp(&id, end_id) == 0))
4515 			break;
4516 
4517 		got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4518 	}
4519 	if (reverse_display_order) {
4520 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4521 			struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4522 			    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4523 
4524 			err = got_object_open_as_commit(&commit, repo,
4525 			    &qid->id);
4526 			if (err)
4527 				break;
4528 			if (show_changed_paths ||
4529 			    (show_diffstat && !show_patch)) {
4530 				err = get_changed_paths(&changed_paths, commit,
4531 				    repo, show_diffstat ? &dsa : NULL);
4532 				if (err)
4533 					break;
4534 			}
4535 			if (one_line)
4536 				err = print_commit_oneline(commit, &qid->id,
4537 				    repo, refs_idmap);
4538 			else
4539 				err = print_commit(commit, &qid->id, repo, path,
4540 				    (show_changed_paths || show_diffstat) ?
4541 				    &changed_paths : NULL,
4542 				    show_diffstat ? &dsa : NULL, show_patch,
4543 				    diff_context, refs_idmap, NULL, NULL);
4544 			got_object_commit_close(commit);
4545 			if (err)
4546 				break;
4547 			got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4548 		}
4549 	}
4550 done:
4551 	while (!STAILQ_EMPTY(&reversed_commits)) {
4552 		qid = STAILQ_FIRST(&reversed_commits);
4553 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4554 		got_object_qid_free(qid);
4555 	}
4556 	got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4557 	if (search_pattern)
4558 		regfree(&regex);
4559 	got_commit_graph_close(graph);
4560 	return err;
4561 }
4562 
4563 __dead static void
4564 usage_log(void)
4565 {
4566 	fprintf(stderr, "usage: %s log [-bdPpRs] [-C number] [-c commit] "
4567 	    "[-l N] [-r repository-path] [-S search-pattern] [-x commit] "
4568 	    "[path]\n", getprogname());
4569 	exit(1);
4570 }
4571 
4572 static int
4573 get_default_log_limit(void)
4574 {
4575 	const char *got_default_log_limit;
4576 	long long n;
4577 	const char *errstr;
4578 
4579 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4580 	if (got_default_log_limit == NULL)
4581 		return 0;
4582 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4583 	if (errstr != NULL)
4584 		return 0;
4585 	return n;
4586 }
4587 
4588 static const struct got_error *
4589 cmd_log(int argc, char *argv[])
4590 {
4591 	const struct got_error *error;
4592 	struct got_repository *repo = NULL;
4593 	struct got_worktree *worktree = NULL;
4594 	struct got_object_id *start_id = NULL, *end_id = NULL;
4595 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4596 	const char *start_commit = NULL, *end_commit = NULL;
4597 	const char *search_pattern = NULL;
4598 	int diff_context = -1, ch;
4599 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4600 	int show_diffstat = 0, reverse_display_order = 0, one_line = 0;
4601 	const char *errstr;
4602 	struct got_reflist_head refs;
4603 	struct got_reflist_object_id_map *refs_idmap = NULL;
4604 	FILE *tmpfile = NULL;
4605 	int *pack_fds = NULL;
4606 
4607 	TAILQ_INIT(&refs);
4608 
4609 #ifndef PROFILE
4610 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4611 	    NULL)
4612 	    == -1)
4613 		err(1, "pledge");
4614 #endif
4615 
4616 	limit = get_default_log_limit();
4617 
4618 	while ((ch = getopt(argc, argv, "bC:c:dl:PpRr:S:sx:")) != -1) {
4619 		switch (ch) {
4620 		case 'b':
4621 			log_branches = 1;
4622 			break;
4623 		case 'C':
4624 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4625 			    &errstr);
4626 			if (errstr != NULL)
4627 				errx(1, "number of context lines is %s: %s",
4628 				    errstr, optarg);
4629 			break;
4630 		case 'c':
4631 			start_commit = optarg;
4632 			break;
4633 		case 'd':
4634 			show_diffstat = 1;
4635 			break;
4636 		case 'l':
4637 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4638 			if (errstr != NULL)
4639 				errx(1, "number of commits is %s: %s",
4640 				    errstr, optarg);
4641 			break;
4642 		case 'P':
4643 			show_changed_paths = 1;
4644 			break;
4645 		case 'p':
4646 			show_patch = 1;
4647 			break;
4648 		case 'R':
4649 			reverse_display_order = 1;
4650 			break;
4651 		case 'r':
4652 			repo_path = realpath(optarg, NULL);
4653 			if (repo_path == NULL)
4654 				return got_error_from_errno2("realpath",
4655 				    optarg);
4656 			got_path_strip_trailing_slashes(repo_path);
4657 			break;
4658 		case 'S':
4659 			search_pattern = optarg;
4660 			break;
4661 		case 's':
4662 			one_line = 1;
4663 			break;
4664 		case 'x':
4665 			end_commit = optarg;
4666 			break;
4667 		default:
4668 			usage_log();
4669 			/* NOTREACHED */
4670 		}
4671 	}
4672 
4673 	argc -= optind;
4674 	argv += optind;
4675 
4676 	if (diff_context == -1)
4677 		diff_context = 3;
4678 	else if (!show_patch)
4679 		errx(1, "-C requires -p");
4680 
4681 	if (one_line && (show_patch || show_changed_paths || show_diffstat))
4682 		errx(1, "cannot use -s with -d, -p or -P");
4683 
4684 	cwd = getcwd(NULL, 0);
4685 	if (cwd == NULL) {
4686 		error = got_error_from_errno("getcwd");
4687 		goto done;
4688 	}
4689 
4690 	error = got_repo_pack_fds_open(&pack_fds);
4691 	if (error != NULL)
4692 		goto done;
4693 
4694 	if (repo_path == NULL) {
4695 		error = got_worktree_open(&worktree, cwd,
4696 		    GOT_WORKTREE_GOT_DIR);
4697 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4698 			goto done;
4699 		error = NULL;
4700 	}
4701 
4702 	if (argc == 1) {
4703 		if (worktree) {
4704 			error = got_worktree_resolve_path(&path, worktree,
4705 			    argv[0]);
4706 			if (error)
4707 				goto done;
4708 		} else {
4709 			path = strdup(argv[0]);
4710 			if (path == NULL) {
4711 				error = got_error_from_errno("strdup");
4712 				goto done;
4713 			}
4714 		}
4715 	} else if (argc != 0)
4716 		usage_log();
4717 
4718 	if (repo_path == NULL) {
4719 		repo_path = worktree ?
4720 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4721 	}
4722 	if (repo_path == NULL) {
4723 		error = got_error_from_errno("strdup");
4724 		goto done;
4725 	}
4726 
4727 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4728 	if (error != NULL)
4729 		goto done;
4730 
4731 	error = apply_unveil(got_repo_get_path(repo), 1,
4732 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4733 	if (error)
4734 		goto done;
4735 
4736 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4737 	if (error)
4738 		goto done;
4739 
4740 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4741 	if (error)
4742 		goto done;
4743 
4744 	if (start_commit == NULL) {
4745 		struct got_reference *head_ref;
4746 		struct got_commit_object *commit = NULL;
4747 		error = got_ref_open(&head_ref, repo,
4748 		    worktree ? got_worktree_get_head_ref_name(worktree)
4749 		    : GOT_REF_HEAD, 0);
4750 		if (error != NULL)
4751 			goto done;
4752 		error = got_ref_resolve(&start_id, repo, head_ref);
4753 		got_ref_close(head_ref);
4754 		if (error != NULL)
4755 			goto done;
4756 		error = got_object_open_as_commit(&commit, repo,
4757 		    start_id);
4758 		if (error != NULL)
4759 			goto done;
4760 		got_object_commit_close(commit);
4761 	} else {
4762 		char *keyword_idstr = NULL;
4763 
4764 		error = got_keyword_to_idstr(&keyword_idstr, start_commit,
4765 		    repo, worktree);
4766 		if (error != NULL)
4767 			goto done;
4768 		if (keyword_idstr != NULL)
4769 			start_commit = keyword_idstr;
4770 
4771 		error = got_repo_match_object_id(&start_id, NULL,
4772 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4773 		free(keyword_idstr);
4774 		if (error != NULL)
4775 			goto done;
4776 	}
4777 	if (end_commit != NULL) {
4778 		error = got_repo_match_object_id(&end_id, NULL,
4779 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4780 		if (error != NULL)
4781 			goto done;
4782 	}
4783 
4784 	if (worktree) {
4785 		/*
4786 		 * If a path was specified on the command line it was resolved
4787 		 * to a path in the work tree above. Prepend the work tree's
4788 		 * path prefix to obtain the corresponding in-repository path.
4789 		 */
4790 		if (path) {
4791 			const char *prefix;
4792 			prefix = got_worktree_get_path_prefix(worktree);
4793 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4794 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4795 				error = got_error_from_errno("asprintf");
4796 				goto done;
4797 			}
4798 		}
4799 	} else
4800 		error = got_repo_map_path(&in_repo_path, repo,
4801 		    path ? path : "");
4802 	if (error != NULL)
4803 		goto done;
4804 	if (in_repo_path) {
4805 		free(path);
4806 		path = in_repo_path;
4807 	}
4808 
4809 	if (worktree) {
4810 		/* Release work tree lock. */
4811 		got_worktree_close(worktree);
4812 		worktree = NULL;
4813 	}
4814 
4815 	if (search_pattern && show_patch) {
4816 		tmpfile = got_opentemp();
4817 		if (tmpfile == NULL) {
4818 			error = got_error_from_errno("got_opentemp");
4819 			goto done;
4820 		}
4821 	}
4822 
4823 	error = print_commits(start_id, end_id, repo, path ? path : "",
4824 	    show_changed_paths, show_diffstat, show_patch, search_pattern,
4825 	    diff_context, limit, log_branches, reverse_display_order,
4826 	    refs_idmap, one_line, tmpfile);
4827 done:
4828 	free(path);
4829 	free(repo_path);
4830 	free(cwd);
4831 	free(start_id);
4832 	free(end_id);
4833 	if (worktree)
4834 		got_worktree_close(worktree);
4835 	if (repo) {
4836 		const struct got_error *close_err = got_repo_close(repo);
4837 		if (error == NULL)
4838 			error = close_err;
4839 	}
4840 	if (pack_fds) {
4841 		const struct got_error *pack_err =
4842 		    got_repo_pack_fds_close(pack_fds);
4843 		if (error == NULL)
4844 			error = pack_err;
4845 	}
4846 	if (refs_idmap)
4847 		got_reflist_object_id_map_free(refs_idmap);
4848 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4849 		error = got_error_from_errno("fclose");
4850 	got_ref_list_free(&refs);
4851 	return error;
4852 }
4853 
4854 __dead static void
4855 usage_diff(void)
4856 {
4857 	fprintf(stderr, "usage: %s diff [-adPsw] [-C number] [-c commit] "
4858 	    "[-r repository-path] [object1 object2 | path ...]\n",
4859 	    getprogname());
4860 	exit(1);
4861 }
4862 
4863 struct print_diff_arg {
4864 	struct got_repository *repo;
4865 	struct got_worktree *worktree;
4866 	struct got_diffstat_cb_arg *diffstat;
4867 	int diff_context;
4868 	const char *id_str;
4869 	int header_shown;
4870 	int diff_staged;
4871 	enum got_diff_algorithm diff_algo;
4872 	int ignore_whitespace;
4873 	int force_text_diff;
4874 	FILE *f1;
4875 	FILE *f2;
4876 	FILE *outfile;
4877 };
4878 
4879 /*
4880  * Create a file which contains the target path of a symlink so we can feed
4881  * it as content to the diff engine.
4882  */
4883 static const struct got_error *
4884 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4885     const char *abspath)
4886 {
4887 	const struct got_error *err = NULL;
4888 	char target_path[PATH_MAX];
4889 	ssize_t target_len, outlen;
4890 
4891 	*fd = -1;
4892 
4893 	if (dirfd != -1) {
4894 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4895 		if (target_len == -1)
4896 			return got_error_from_errno2("readlinkat", abspath);
4897 	} else {
4898 		target_len = readlink(abspath, target_path, PATH_MAX);
4899 		if (target_len == -1)
4900 			return got_error_from_errno2("readlink", abspath);
4901 	}
4902 
4903 	*fd = got_opentempfd();
4904 	if (*fd == -1)
4905 		return got_error_from_errno("got_opentempfd");
4906 
4907 	outlen = write(*fd, target_path, target_len);
4908 	if (outlen == -1) {
4909 		err = got_error_from_errno("got_opentempfd");
4910 		goto done;
4911 	}
4912 
4913 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4914 		err = got_error_from_errno2("lseek", abspath);
4915 		goto done;
4916 	}
4917 done:
4918 	if (err) {
4919 		close(*fd);
4920 		*fd = -1;
4921 	}
4922 	return err;
4923 }
4924 
4925 static const struct got_error *
4926 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4927     const char *path, struct got_object_id *blob_id,
4928     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4929     int dirfd, const char *de_name)
4930 {
4931 	struct print_diff_arg *a = arg;
4932 	const struct got_error *err = NULL;
4933 	struct got_blob_object *blob1 = NULL;
4934 	int fd = -1, fd1 = -1, fd2 = -1;
4935 	FILE *f2 = NULL;
4936 	char *abspath = NULL, *label1 = NULL;
4937 	struct stat sb;
4938 	off_t size1 = 0;
4939 	int f2_exists = 0;
4940 
4941 	memset(&sb, 0, sizeof(sb));
4942 
4943 	if (a->diff_staged) {
4944 		if (staged_status != GOT_STATUS_MODIFY &&
4945 		    staged_status != GOT_STATUS_ADD &&
4946 		    staged_status != GOT_STATUS_DELETE)
4947 			return NULL;
4948 	} else {
4949 		if (staged_status == GOT_STATUS_DELETE)
4950 			return NULL;
4951 		if (status == GOT_STATUS_NONEXISTENT)
4952 			return got_error_set_errno(ENOENT, path);
4953 		if (status != GOT_STATUS_MODIFY &&
4954 		    status != GOT_STATUS_ADD &&
4955 		    status != GOT_STATUS_DELETE &&
4956 		    status != GOT_STATUS_CONFLICT)
4957 			return NULL;
4958 	}
4959 
4960 	err = got_opentemp_truncate(a->f1);
4961 	if (err)
4962 		return got_error_from_errno("got_opentemp_truncate");
4963 	err = got_opentemp_truncate(a->f2);
4964 	if (err)
4965 		return got_error_from_errno("got_opentemp_truncate");
4966 
4967 	if (!a->header_shown) {
4968 		if (fprintf(a->outfile, "diff %s%s\n",
4969 		    a->diff_staged ? "-s " : "",
4970 		    got_worktree_get_root_path(a->worktree)) < 0) {
4971 			err = got_error_from_errno("fprintf");
4972 			goto done;
4973 		}
4974 		if (fprintf(a->outfile, "commit - %s\n", a->id_str) < 0) {
4975 			err = got_error_from_errno("fprintf");
4976 			goto done;
4977 		}
4978 		if (fprintf(a->outfile, "path + %s%s\n",
4979 		    got_worktree_get_root_path(a->worktree),
4980 		    a->diff_staged ? " (staged changes)" : "") < 0) {
4981 			err = got_error_from_errno("fprintf");
4982 			goto done;
4983 		}
4984 		a->header_shown = 1;
4985 	}
4986 
4987 	if (a->diff_staged) {
4988 		const char *label1 = NULL, *label2 = NULL;
4989 		switch (staged_status) {
4990 		case GOT_STATUS_MODIFY:
4991 			label1 = path;
4992 			label2 = path;
4993 			break;
4994 		case GOT_STATUS_ADD:
4995 			label2 = path;
4996 			break;
4997 		case GOT_STATUS_DELETE:
4998 			label1 = path;
4999 			break;
5000 		default:
5001 			return got_error(GOT_ERR_FILE_STATUS);
5002 		}
5003 		fd1 = got_opentempfd();
5004 		if (fd1 == -1) {
5005 			err = got_error_from_errno("got_opentempfd");
5006 			goto done;
5007 		}
5008 		fd2 = got_opentempfd();
5009 		if (fd2 == -1) {
5010 			err = got_error_from_errno("got_opentempfd");
5011 			goto done;
5012 		}
5013 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
5014 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
5015 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
5016 		    a->force_text_diff, a->diffstat, a->repo, a->outfile);
5017 		goto done;
5018 	}
5019 
5020 	fd1 = got_opentempfd();
5021 	if (fd1 == -1) {
5022 		err = got_error_from_errno("got_opentempfd");
5023 		goto done;
5024 	}
5025 
5026 	if (staged_status == GOT_STATUS_ADD ||
5027 	    staged_status == GOT_STATUS_MODIFY) {
5028 		char *id_str;
5029 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
5030 		    8192, fd1);
5031 		if (err)
5032 			goto done;
5033 		err = got_object_id_str(&id_str, staged_blob_id);
5034 		if (err)
5035 			goto done;
5036 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
5037 			err = got_error_from_errno("asprintf");
5038 			free(id_str);
5039 			goto done;
5040 		}
5041 		free(id_str);
5042 	} else if (status != GOT_STATUS_ADD) {
5043 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
5044 		    fd1);
5045 		if (err)
5046 			goto done;
5047 	}
5048 
5049 	if (status != GOT_STATUS_DELETE) {
5050 		if (asprintf(&abspath, "%s/%s",
5051 		    got_worktree_get_root_path(a->worktree), path) == -1) {
5052 			err = got_error_from_errno("asprintf");
5053 			goto done;
5054 		}
5055 
5056 		if (dirfd != -1) {
5057 			fd = openat(dirfd, de_name,
5058 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5059 			if (fd == -1) {
5060 				if (!got_err_open_nofollow_on_symlink()) {
5061 					err = got_error_from_errno2("openat",
5062 					    abspath);
5063 					goto done;
5064 				}
5065 				err = get_symlink_target_file(&fd, dirfd,
5066 				    de_name, abspath);
5067 				if (err)
5068 					goto done;
5069 			}
5070 		} else {
5071 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5072 			if (fd == -1) {
5073 				if (!got_err_open_nofollow_on_symlink()) {
5074 					err = got_error_from_errno2("open",
5075 					    abspath);
5076 					goto done;
5077 				}
5078 				err = get_symlink_target_file(&fd, dirfd,
5079 				    de_name, abspath);
5080 				if (err)
5081 					goto done;
5082 			}
5083 		}
5084 		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
5085 			err = got_error_from_errno2("fstatat", abspath);
5086 			goto done;
5087 		}
5088 		f2 = fdopen(fd, "r");
5089 		if (f2 == NULL) {
5090 			err = got_error_from_errno2("fdopen", abspath);
5091 			goto done;
5092 		}
5093 		fd = -1;
5094 		f2_exists = 1;
5095 	}
5096 
5097 	if (blob1) {
5098 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
5099 		    a->f1, blob1);
5100 		if (err)
5101 			goto done;
5102 	}
5103 
5104 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
5105 	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
5106 	    a->ignore_whitespace, a->force_text_diff, a->diffstat, a->outfile);
5107 done:
5108 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
5109 		err = got_error_from_errno("close");
5110 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
5111 		err = got_error_from_errno("close");
5112 	if (blob1)
5113 		got_object_blob_close(blob1);
5114 	if (fd != -1 && close(fd) == -1 && err == NULL)
5115 		err = got_error_from_errno("close");
5116 	if (f2 && fclose(f2) == EOF && err == NULL)
5117 		err = got_error_from_errno("fclose");
5118 	free(abspath);
5119 	return err;
5120 }
5121 
5122 static const struct got_error *
5123 cmd_diff(int argc, char *argv[])
5124 {
5125 	const struct got_error *error;
5126 	struct got_repository *repo = NULL;
5127 	struct got_worktree *worktree = NULL;
5128 	char *cwd = NULL, *repo_path = NULL;
5129 	const char *commit_args[2] = { NULL, NULL };
5130 	int ncommit_args = 0;
5131 	struct got_object_id *ids[2] = { NULL, NULL };
5132 	char *labels[2] = { NULL, NULL };
5133 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
5134 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
5135 	int force_text_diff = 0, force_path = 0, rflag = 0, show_diffstat = 0;
5136 	const char *errstr;
5137 	struct got_reflist_head refs;
5138 	struct got_pathlist_head diffstat_paths, paths;
5139 	FILE *f1 = NULL, *f2 = NULL, *outfile = NULL;
5140 	int fd1 = -1, fd2 = -1;
5141 	int *pack_fds = NULL;
5142 	struct got_diffstat_cb_arg dsa;
5143 
5144 	memset(&dsa, 0, sizeof(dsa));
5145 
5146 	TAILQ_INIT(&refs);
5147 	TAILQ_INIT(&paths);
5148 	TAILQ_INIT(&diffstat_paths);
5149 
5150 #ifndef PROFILE
5151 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5152 	    NULL) == -1)
5153 		err(1, "pledge");
5154 #endif
5155 
5156 	while ((ch = getopt(argc, argv, "aC:c:dPr:sw")) != -1) {
5157 		switch (ch) {
5158 		case 'a':
5159 			force_text_diff = 1;
5160 			break;
5161 		case 'C':
5162 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
5163 			    &errstr);
5164 			if (errstr != NULL)
5165 				errx(1, "number of context lines is %s: %s",
5166 				    errstr, optarg);
5167 			break;
5168 		case 'c':
5169 			if (ncommit_args >= 2)
5170 				errx(1, "too many -c options used");
5171 			commit_args[ncommit_args++] = optarg;
5172 			break;
5173 		case 'd':
5174 			show_diffstat = 1;
5175 			break;
5176 		case 'P':
5177 			force_path = 1;
5178 			break;
5179 		case 'r':
5180 			repo_path = realpath(optarg, NULL);
5181 			if (repo_path == NULL)
5182 				return got_error_from_errno2("realpath",
5183 				    optarg);
5184 			got_path_strip_trailing_slashes(repo_path);
5185 			rflag = 1;
5186 			break;
5187 		case 's':
5188 			diff_staged = 1;
5189 			break;
5190 		case 'w':
5191 			ignore_whitespace = 1;
5192 			break;
5193 		default:
5194 			usage_diff();
5195 			/* NOTREACHED */
5196 		}
5197 	}
5198 
5199 	argc -= optind;
5200 	argv += optind;
5201 
5202 	cwd = getcwd(NULL, 0);
5203 	if (cwd == NULL) {
5204 		error = got_error_from_errno("getcwd");
5205 		goto done;
5206 	}
5207 
5208 	error = got_repo_pack_fds_open(&pack_fds);
5209 	if (error != NULL)
5210 		goto done;
5211 
5212 	if (repo_path == NULL) {
5213 		error = got_worktree_open(&worktree, cwd,
5214 		    GOT_WORKTREE_GOT_DIR);
5215 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5216 			goto done;
5217 		else
5218 			error = NULL;
5219 		if (worktree) {
5220 			repo_path =
5221 			    strdup(got_worktree_get_repo_path(worktree));
5222 			if (repo_path == NULL) {
5223 				error = got_error_from_errno("strdup");
5224 				goto done;
5225 			}
5226 		} else {
5227 			repo_path = strdup(cwd);
5228 			if (repo_path == NULL) {
5229 				error = got_error_from_errno("strdup");
5230 				goto done;
5231 			}
5232 		}
5233 	}
5234 
5235 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5236 	free(repo_path);
5237 	if (error != NULL)
5238 		goto done;
5239 
5240 	if (show_diffstat) {
5241 		dsa.paths = &diffstat_paths;
5242 		dsa.force_text = force_text_diff;
5243 		dsa.ignore_ws = ignore_whitespace;
5244 		dsa.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5245 	}
5246 
5247 	if (rflag || worktree == NULL || ncommit_args > 0) {
5248 		if (force_path) {
5249 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5250 			    "-P option can only be used when diffing "
5251 			    "a work tree");
5252 			goto done;
5253 		}
5254 		if (diff_staged) {
5255 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5256 			    "-s option can only be used when diffing "
5257 			    "a work tree");
5258 			goto done;
5259 		}
5260 	}
5261 
5262 	error = apply_unveil(got_repo_get_path(repo), 1,
5263 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5264 	if (error)
5265 		goto done;
5266 
5267 	if ((!force_path && argc == 2) || ncommit_args > 0) {
5268 		int obj_type = (ncommit_args > 0 ?
5269 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
5270 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5271 		    NULL);
5272 		if (error)
5273 			goto done;
5274 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
5275 			const char	*arg;
5276 			char		*keyword_idstr = NULL;
5277 
5278 			if (ncommit_args > 0)
5279 				arg = commit_args[i];
5280 			else
5281 				arg = argv[i];
5282 
5283 			error = got_keyword_to_idstr(&keyword_idstr, arg,
5284 			    repo, worktree);
5285 			if (error != NULL)
5286 				goto done;
5287 			if (keyword_idstr != NULL)
5288 				arg = keyword_idstr;
5289 
5290 			error = got_repo_match_object_id(&ids[i], &labels[i],
5291 			    arg, obj_type, &refs, repo);
5292 			free(keyword_idstr);
5293 			if (error) {
5294 				if (error->code != GOT_ERR_NOT_REF &&
5295 				    error->code != GOT_ERR_NO_OBJ)
5296 					goto done;
5297 				if (ncommit_args > 0)
5298 					goto done;
5299 				error = NULL;
5300 				break;
5301 			}
5302 		}
5303 	}
5304 
5305 	f1 = got_opentemp();
5306 	if (f1 == NULL) {
5307 		error = got_error_from_errno("got_opentemp");
5308 		goto done;
5309 	}
5310 
5311 	f2 = got_opentemp();
5312 	if (f2 == NULL) {
5313 		error = got_error_from_errno("got_opentemp");
5314 		goto done;
5315 	}
5316 
5317 	outfile = got_opentemp();
5318 	if (outfile == NULL) {
5319 		error = got_error_from_errno("got_opentemp");
5320 		goto done;
5321 	}
5322 
5323 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
5324 		struct print_diff_arg arg;
5325 		char *id_str;
5326 
5327 		if (worktree == NULL) {
5328 			if (argc == 2 && ids[0] == NULL) {
5329 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
5330 				goto done;
5331 			} else if (argc == 2 && ids[1] == NULL) {
5332 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
5333 				goto done;
5334 			} else if (argc > 0) {
5335 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
5336 				    "%s", "specified paths cannot be resolved");
5337 				goto done;
5338 			} else {
5339 				error = got_error(GOT_ERR_NOT_WORKTREE);
5340 				goto done;
5341 			}
5342 		}
5343 
5344 		error = get_worktree_paths_from_argv(&paths, argc, argv,
5345 		    worktree);
5346 		if (error)
5347 			goto done;
5348 
5349 		error = got_object_id_str(&id_str,
5350 		    got_worktree_get_base_commit_id(worktree));
5351 		if (error)
5352 			goto done;
5353 		arg.repo = repo;
5354 		arg.worktree = worktree;
5355 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5356 		arg.diff_context = diff_context;
5357 		arg.id_str = id_str;
5358 		arg.header_shown = 0;
5359 		arg.diff_staged = diff_staged;
5360 		arg.ignore_whitespace = ignore_whitespace;
5361 		arg.force_text_diff = force_text_diff;
5362 		arg.diffstat = show_diffstat ? &dsa : NULL;
5363 		arg.f1 = f1;
5364 		arg.f2 = f2;
5365 		arg.outfile = outfile;
5366 
5367 		error = got_worktree_status(worktree, &paths, repo, 0,
5368 		    print_diff, &arg, check_cancelled, NULL);
5369 		free(id_str);
5370 		if (error)
5371 			goto done;
5372 
5373 		if (show_diffstat && dsa.nfiles > 0) {
5374 			char *header;
5375 
5376 			if (asprintf(&header, "diffstat %s%s",
5377 			    diff_staged ? "-s " : "",
5378 			    got_worktree_get_root_path(worktree)) == -1) {
5379 				error = got_error_from_errno("asprintf");
5380 				goto done;
5381 			}
5382 
5383 			error = print_diffstat(&dsa, header);
5384 			free(header);
5385 			if (error)
5386 				goto done;
5387 		}
5388 
5389 		error = printfile(outfile);
5390 		goto done;
5391 	}
5392 
5393 	if (ncommit_args == 1) {
5394 		struct got_commit_object *commit;
5395 		error = got_object_open_as_commit(&commit, repo, ids[0]);
5396 		if (error)
5397 			goto done;
5398 
5399 		labels[1] = labels[0];
5400 		ids[1] = ids[0];
5401 		if (got_object_commit_get_nparents(commit) > 0) {
5402 			const struct got_object_id_queue *pids;
5403 			struct got_object_qid *pid;
5404 			pids = got_object_commit_get_parent_ids(commit);
5405 			pid = STAILQ_FIRST(pids);
5406 			ids[0] = got_object_id_dup(&pid->id);
5407 			if (ids[0] == NULL) {
5408 				error = got_error_from_errno(
5409 				    "got_object_id_dup");
5410 				got_object_commit_close(commit);
5411 				goto done;
5412 			}
5413 			error = got_object_id_str(&labels[0], ids[0]);
5414 			if (error) {
5415 				got_object_commit_close(commit);
5416 				goto done;
5417 			}
5418 		} else {
5419 			ids[0] = NULL;
5420 			labels[0] = strdup("/dev/null");
5421 			if (labels[0] == NULL) {
5422 				error = got_error_from_errno("strdup");
5423 				got_object_commit_close(commit);
5424 				goto done;
5425 			}
5426 		}
5427 
5428 		got_object_commit_close(commit);
5429 	}
5430 
5431 	if (ncommit_args == 0 && argc > 2) {
5432 		error = got_error_msg(GOT_ERR_BAD_PATH,
5433 		    "path arguments cannot be used when diffing two objects");
5434 		goto done;
5435 	}
5436 
5437 	if (ids[0]) {
5438 		error = got_object_get_type(&type1, repo, ids[0]);
5439 		if (error)
5440 			goto done;
5441 	}
5442 
5443 	error = got_object_get_type(&type2, repo, ids[1]);
5444 	if (error)
5445 		goto done;
5446 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
5447 		error = got_error(GOT_ERR_OBJ_TYPE);
5448 		goto done;
5449 	}
5450 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
5451 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
5452 		    "path arguments cannot be used when diffing blobs");
5453 		goto done;
5454 	}
5455 
5456 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
5457 		char *in_repo_path;
5458 		struct got_pathlist_entry *new;
5459 		if (worktree) {
5460 			const char *prefix;
5461 			char *p;
5462 			error = got_worktree_resolve_path(&p, worktree,
5463 			    argv[i]);
5464 			if (error)
5465 				goto done;
5466 			prefix = got_worktree_get_path_prefix(worktree);
5467 			while (prefix[0] == '/')
5468 				prefix++;
5469 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
5470 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
5471 			    p) == -1) {
5472 				error = got_error_from_errno("asprintf");
5473 				free(p);
5474 				goto done;
5475 			}
5476 			free(p);
5477 		} else {
5478 			char *mapped_path, *s;
5479 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
5480 			if (error)
5481 				goto done;
5482 			s = mapped_path;
5483 			while (s[0] == '/')
5484 				s++;
5485 			in_repo_path = strdup(s);
5486 			if (in_repo_path == NULL) {
5487 				error = got_error_from_errno("asprintf");
5488 				free(mapped_path);
5489 				goto done;
5490 			}
5491 			free(mapped_path);
5492 
5493 		}
5494 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
5495 		if (error || new == NULL /* duplicate */)
5496 			free(in_repo_path);
5497 		if (error)
5498 			goto done;
5499 	}
5500 
5501 	if (worktree) {
5502 		/* Release work tree lock. */
5503 		got_worktree_close(worktree);
5504 		worktree = NULL;
5505 	}
5506 
5507 	fd1 = got_opentempfd();
5508 	if (fd1 == -1) {
5509 		error = got_error_from_errno("got_opentempfd");
5510 		goto done;
5511 	}
5512 
5513 	fd2 = got_opentempfd();
5514 	if (fd2 == -1) {
5515 		error = got_error_from_errno("got_opentempfd");
5516 		goto done;
5517 	}
5518 
5519 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
5520 	case GOT_OBJ_TYPE_BLOB:
5521 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
5522 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
5523 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5524 		    ignore_whitespace, force_text_diff,
5525 		    show_diffstat ? &dsa : NULL, repo, outfile);
5526 		break;
5527 	case GOT_OBJ_TYPE_TREE:
5528 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
5529 		    ids[0], ids[1], &paths, "", "",
5530 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5531 		    ignore_whitespace, force_text_diff,
5532 		    show_diffstat ? &dsa : NULL, repo, outfile);
5533 		break;
5534 	case GOT_OBJ_TYPE_COMMIT:
5535 		fprintf(outfile, "diff %s %s\n", labels[0], labels[1]);
5536 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
5537 		    fd1, fd2, ids[0], ids[1], &paths,
5538 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5539 		    ignore_whitespace, force_text_diff,
5540 		    show_diffstat ? &dsa : NULL, repo, outfile);
5541 		break;
5542 	default:
5543 		error = got_error(GOT_ERR_OBJ_TYPE);
5544 	}
5545 	if (error)
5546 		goto done;
5547 
5548 	if (show_diffstat && dsa.nfiles > 0) {
5549 		char *header = NULL;
5550 
5551 		if (asprintf(&header, "diffstat %s %s",
5552 		    labels[0], labels[1]) == -1) {
5553 			error = got_error_from_errno("asprintf");
5554 			goto done;
5555 		}
5556 
5557 		error = print_diffstat(&dsa, header);
5558 		free(header);
5559 		if (error)
5560 			goto done;
5561 	}
5562 
5563 	error = printfile(outfile);
5564 
5565 done:
5566 	free(labels[0]);
5567 	free(labels[1]);
5568 	free(ids[0]);
5569 	free(ids[1]);
5570 	if (worktree)
5571 		got_worktree_close(worktree);
5572 	if (repo) {
5573 		const struct got_error *close_err = got_repo_close(repo);
5574 		if (error == NULL)
5575 			error = close_err;
5576 	}
5577 	if (pack_fds) {
5578 		const struct got_error *pack_err =
5579 		    got_repo_pack_fds_close(pack_fds);
5580 		if (error == NULL)
5581 			error = pack_err;
5582 	}
5583 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
5584 	got_pathlist_free(&diffstat_paths, GOT_PATHLIST_FREE_ALL);
5585 	got_ref_list_free(&refs);
5586 	if (outfile && fclose(outfile) == EOF && error == NULL)
5587 		error = got_error_from_errno("fclose");
5588 	if (f1 && fclose(f1) == EOF && error == NULL)
5589 		error = got_error_from_errno("fclose");
5590 	if (f2 && fclose(f2) == EOF && error == NULL)
5591 		error = got_error_from_errno("fclose");
5592 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5593 		error = got_error_from_errno("close");
5594 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5595 		error = got_error_from_errno("close");
5596 	return error;
5597 }
5598 
5599 __dead static void
5600 usage_blame(void)
5601 {
5602 	fprintf(stderr,
5603 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
5604 	    getprogname());
5605 	exit(1);
5606 }
5607 
5608 struct blame_line {
5609 	int annotated;
5610 	char *id_str;
5611 	char *committer;
5612 	char datebuf[11]; /* YYYY-MM-DD + NUL */
5613 };
5614 
5615 struct blame_cb_args {
5616 	struct blame_line *lines;
5617 	int nlines;
5618 	int nlines_prec;
5619 	int lineno_cur;
5620 	off_t *line_offsets;
5621 	FILE *f;
5622 	struct got_repository *repo;
5623 };
5624 
5625 static const struct got_error *
5626 blame_cb(void *arg, int nlines, int lineno,
5627     struct got_commit_object *commit, struct got_object_id *id)
5628 {
5629 	const struct got_error *err = NULL;
5630 	struct blame_cb_args *a = arg;
5631 	struct blame_line *bline;
5632 	char *line = NULL;
5633 	size_t linesize = 0;
5634 	off_t offset;
5635 	struct tm tm;
5636 	time_t committer_time;
5637 
5638 	if (nlines != a->nlines ||
5639 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
5640 		return got_error(GOT_ERR_RANGE);
5641 
5642 	if (sigint_received)
5643 		return got_error(GOT_ERR_ITER_COMPLETED);
5644 
5645 	if (lineno == -1)
5646 		return NULL; /* no change in this commit */
5647 
5648 	/* Annotate this line. */
5649 	bline = &a->lines[lineno - 1];
5650 	if (bline->annotated)
5651 		return NULL;
5652 	err = got_object_id_str(&bline->id_str, id);
5653 	if (err)
5654 		return err;
5655 
5656 	bline->committer = strdup(got_object_commit_get_committer(commit));
5657 	if (bline->committer == NULL) {
5658 		err = got_error_from_errno("strdup");
5659 		goto done;
5660 	}
5661 
5662 	committer_time = got_object_commit_get_committer_time(commit);
5663 	if (gmtime_r(&committer_time, &tm) == NULL)
5664 		return got_error_from_errno("gmtime_r");
5665 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
5666 	    &tm) == 0) {
5667 		err = got_error(GOT_ERR_NO_SPACE);
5668 		goto done;
5669 	}
5670 	bline->annotated = 1;
5671 
5672 	/* Print lines annotated so far. */
5673 	bline = &a->lines[a->lineno_cur - 1];
5674 	if (!bline->annotated)
5675 		goto done;
5676 
5677 	offset = a->line_offsets[a->lineno_cur - 1];
5678 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5679 		err = got_error_from_errno("fseeko");
5680 		goto done;
5681 	}
5682 
5683 	while (a->lineno_cur <= a->nlines && bline->annotated) {
5684 		char *smallerthan, *at, *nl, *committer;
5685 		size_t len;
5686 
5687 		if (getline(&line, &linesize, a->f) == -1) {
5688 			if (ferror(a->f))
5689 				err = got_error_from_errno("getline");
5690 			break;
5691 		}
5692 
5693 		committer = bline->committer;
5694 		smallerthan = strchr(committer, '<');
5695 		if (smallerthan && smallerthan[1] != '\0')
5696 			committer = smallerthan + 1;
5697 		at = strchr(committer, '@');
5698 		if (at)
5699 			*at = '\0';
5700 		len = strlen(committer);
5701 		if (len >= 9)
5702 			committer[8] = '\0';
5703 
5704 		nl = strchr(line, '\n');
5705 		if (nl)
5706 			*nl = '\0';
5707 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5708 		    bline->id_str, bline->datebuf, committer, line);
5709 
5710 		a->lineno_cur++;
5711 		bline = &a->lines[a->lineno_cur - 1];
5712 	}
5713 done:
5714 	free(line);
5715 	return err;
5716 }
5717 
5718 static const struct got_error *
5719 cmd_blame(int argc, char *argv[])
5720 {
5721 	const struct got_error *error;
5722 	struct got_repository *repo = NULL;
5723 	struct got_worktree *worktree = NULL;
5724 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5725 	char *link_target = NULL;
5726 	struct got_object_id *obj_id = NULL;
5727 	struct got_object_id *commit_id = NULL;
5728 	struct got_commit_object *commit = NULL;
5729 	struct got_blob_object *blob = NULL;
5730 	char *commit_id_str = NULL, *keyword_idstr = NULL;
5731 	struct blame_cb_args bca;
5732 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5733 	off_t filesize;
5734 	int *pack_fds = NULL;
5735 	FILE *f1 = NULL, *f2 = NULL;
5736 
5737 	fd1 = got_opentempfd();
5738 	if (fd1 == -1)
5739 		return got_error_from_errno("got_opentempfd");
5740 
5741 	memset(&bca, 0, sizeof(bca));
5742 
5743 #ifndef PROFILE
5744 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5745 	    NULL) == -1)
5746 		err(1, "pledge");
5747 #endif
5748 
5749 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5750 		switch (ch) {
5751 		case 'c':
5752 			commit_id_str = optarg;
5753 			break;
5754 		case 'r':
5755 			repo_path = realpath(optarg, NULL);
5756 			if (repo_path == NULL)
5757 				return got_error_from_errno2("realpath",
5758 				    optarg);
5759 			got_path_strip_trailing_slashes(repo_path);
5760 			break;
5761 		default:
5762 			usage_blame();
5763 			/* NOTREACHED */
5764 		}
5765 	}
5766 
5767 	argc -= optind;
5768 	argv += optind;
5769 
5770 	if (argc == 1)
5771 		path = argv[0];
5772 	else
5773 		usage_blame();
5774 
5775 	cwd = getcwd(NULL, 0);
5776 	if (cwd == NULL) {
5777 		error = got_error_from_errno("getcwd");
5778 		goto done;
5779 	}
5780 
5781 	error = got_repo_pack_fds_open(&pack_fds);
5782 	if (error != NULL)
5783 		goto done;
5784 
5785 	if (repo_path == NULL) {
5786 		error = got_worktree_open(&worktree, cwd,
5787 		    GOT_WORKTREE_GOT_DIR);
5788 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5789 			goto done;
5790 		else
5791 			error = NULL;
5792 		if (worktree) {
5793 			repo_path =
5794 			    strdup(got_worktree_get_repo_path(worktree));
5795 			if (repo_path == NULL) {
5796 				error = got_error_from_errno("strdup");
5797 				if (error)
5798 					goto done;
5799 			}
5800 		} else {
5801 			repo_path = strdup(cwd);
5802 			if (repo_path == NULL) {
5803 				error = got_error_from_errno("strdup");
5804 				goto done;
5805 			}
5806 		}
5807 	}
5808 
5809 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5810 	if (error != NULL)
5811 		goto done;
5812 
5813 	if (worktree) {
5814 		const char *prefix = got_worktree_get_path_prefix(worktree);
5815 		char *p;
5816 
5817 		error = got_worktree_resolve_path(&p, worktree, path);
5818 		if (error)
5819 			goto done;
5820 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5821 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5822 		    p) == -1) {
5823 			error = got_error_from_errno("asprintf");
5824 			free(p);
5825 			goto done;
5826 		}
5827 		free(p);
5828 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5829 	} else {
5830 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5831 		if (error)
5832 			goto done;
5833 		error = got_repo_map_path(&in_repo_path, repo, path);
5834 	}
5835 	if (error)
5836 		goto done;
5837 
5838 	if (commit_id_str == NULL) {
5839 		struct got_reference *head_ref;
5840 		error = got_ref_open(&head_ref, repo, worktree ?
5841 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5842 		if (error != NULL)
5843 			goto done;
5844 		error = got_ref_resolve(&commit_id, repo, head_ref);
5845 		got_ref_close(head_ref);
5846 		if (error != NULL)
5847 			goto done;
5848 	} else {
5849 		struct got_reflist_head refs;
5850 
5851 		TAILQ_INIT(&refs);
5852 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5853 		    NULL);
5854 		if (error)
5855 			goto done;
5856 
5857 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
5858 		    repo, worktree);
5859 		if (error != NULL)
5860 			goto done;
5861 		if (keyword_idstr != NULL)
5862 			commit_id_str = keyword_idstr;
5863 
5864 		error = got_repo_match_object_id(&commit_id, NULL,
5865 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5866 		got_ref_list_free(&refs);
5867 		if (error)
5868 			goto done;
5869 	}
5870 
5871 	if (worktree) {
5872 		/* Release work tree lock. */
5873 		got_worktree_close(worktree);
5874 		worktree = NULL;
5875 	}
5876 
5877 	error = got_object_open_as_commit(&commit, repo, commit_id);
5878 	if (error)
5879 		goto done;
5880 
5881 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5882 	    commit, repo);
5883 	if (error)
5884 		goto done;
5885 
5886 	error = got_object_id_by_path(&obj_id, repo, commit,
5887 	    link_target ? link_target : in_repo_path);
5888 	if (error)
5889 		goto done;
5890 
5891 	error = got_object_get_type(&obj_type, repo, obj_id);
5892 	if (error)
5893 		goto done;
5894 
5895 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5896 		error = got_error_path(link_target ? link_target : in_repo_path,
5897 		    GOT_ERR_OBJ_TYPE);
5898 		goto done;
5899 	}
5900 
5901 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5902 	if (error)
5903 		goto done;
5904 	bca.f = got_opentemp();
5905 	if (bca.f == NULL) {
5906 		error = got_error_from_errno("got_opentemp");
5907 		goto done;
5908 	}
5909 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5910 	    &bca.line_offsets, bca.f, blob);
5911 	if (error || bca.nlines == 0)
5912 		goto done;
5913 
5914 	/* Don't include \n at EOF in the blame line count. */
5915 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5916 		bca.nlines--;
5917 
5918 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5919 	if (bca.lines == NULL) {
5920 		error = got_error_from_errno("calloc");
5921 		goto done;
5922 	}
5923 	bca.lineno_cur = 1;
5924 	bca.nlines_prec = 0;
5925 	i = bca.nlines;
5926 	while (i > 0) {
5927 		i /= 10;
5928 		bca.nlines_prec++;
5929 	}
5930 	bca.repo = repo;
5931 
5932 	fd2 = got_opentempfd();
5933 	if (fd2 == -1) {
5934 		error = got_error_from_errno("got_opentempfd");
5935 		goto done;
5936 	}
5937 	fd3 = got_opentempfd();
5938 	if (fd3 == -1) {
5939 		error = got_error_from_errno("got_opentempfd");
5940 		goto done;
5941 	}
5942 	f1 = got_opentemp();
5943 	if (f1 == NULL) {
5944 		error = got_error_from_errno("got_opentemp");
5945 		goto done;
5946 	}
5947 	f2 = got_opentemp();
5948 	if (f2 == NULL) {
5949 		error = got_error_from_errno("got_opentemp");
5950 		goto done;
5951 	}
5952 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5953 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5954 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5955 done:
5956 	free(keyword_idstr);
5957 	free(in_repo_path);
5958 	free(link_target);
5959 	free(repo_path);
5960 	free(cwd);
5961 	free(commit_id);
5962 	free(obj_id);
5963 	if (commit)
5964 		got_object_commit_close(commit);
5965 
5966 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5967 		error = got_error_from_errno("close");
5968 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5969 		error = got_error_from_errno("close");
5970 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5971 		error = got_error_from_errno("close");
5972 	if (f1 && fclose(f1) == EOF && error == NULL)
5973 		error = got_error_from_errno("fclose");
5974 	if (f2 && fclose(f2) == EOF && error == NULL)
5975 		error = got_error_from_errno("fclose");
5976 
5977 	if (blob)
5978 		got_object_blob_close(blob);
5979 	if (worktree)
5980 		got_worktree_close(worktree);
5981 	if (repo) {
5982 		const struct got_error *close_err = got_repo_close(repo);
5983 		if (error == NULL)
5984 			error = close_err;
5985 	}
5986 	if (pack_fds) {
5987 		const struct got_error *pack_err =
5988 		    got_repo_pack_fds_close(pack_fds);
5989 		if (error == NULL)
5990 			error = pack_err;
5991 	}
5992 	if (bca.lines) {
5993 		for (i = 0; i < bca.nlines; i++) {
5994 			struct blame_line *bline = &bca.lines[i];
5995 			free(bline->id_str);
5996 			free(bline->committer);
5997 		}
5998 		free(bca.lines);
5999 	}
6000 	free(bca.line_offsets);
6001 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
6002 		error = got_error_from_errno("fclose");
6003 	return error;
6004 }
6005 
6006 __dead static void
6007 usage_tree(void)
6008 {
6009 	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
6010 	    "[path]\n", getprogname());
6011 	exit(1);
6012 }
6013 
6014 static const struct got_error *
6015 print_entry(struct got_tree_entry *te, const char *id, const char *path,
6016     const char *root_path, struct got_repository *repo)
6017 {
6018 	const struct got_error *err = NULL;
6019 	int is_root_path = (strcmp(path, root_path) == 0);
6020 	const char *modestr = "";
6021 	mode_t mode = got_tree_entry_get_mode(te);
6022 	char *link_target = NULL;
6023 
6024 	path += strlen(root_path);
6025 	while (path[0] == '/')
6026 		path++;
6027 
6028 	if (got_object_tree_entry_is_submodule(te))
6029 		modestr = "$";
6030 	else if (S_ISLNK(mode)) {
6031 		int i;
6032 
6033 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
6034 		if (err)
6035 			return err;
6036 		for (i = 0; link_target[i] != '\0'; i++) {
6037 			if (!isprint((unsigned char)link_target[i]))
6038 				link_target[i] = '?';
6039 		}
6040 
6041 		modestr = "@";
6042 	}
6043 	else if (S_ISDIR(mode))
6044 		modestr = "/";
6045 	else if (mode & S_IXUSR)
6046 		modestr = "*";
6047 
6048 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
6049 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
6050 	    link_target ? " -> ": "", link_target ? link_target : "");
6051 
6052 	free(link_target);
6053 	return NULL;
6054 }
6055 
6056 static const struct got_error *
6057 print_tree(const char *path, struct got_commit_object *commit,
6058     int show_ids, int recurse, const char *root_path,
6059     struct got_repository *repo)
6060 {
6061 	const struct got_error *err = NULL;
6062 	struct got_object_id *tree_id = NULL;
6063 	struct got_tree_object *tree = NULL;
6064 	int nentries, i;
6065 
6066 	err = got_object_id_by_path(&tree_id, repo, commit, path);
6067 	if (err)
6068 		goto done;
6069 
6070 	err = got_object_open_as_tree(&tree, repo, tree_id);
6071 	if (err)
6072 		goto done;
6073 	nentries = got_object_tree_get_nentries(tree);
6074 	for (i = 0; i < nentries; i++) {
6075 		struct got_tree_entry *te;
6076 		char *id = NULL;
6077 
6078 		if (sigint_received || sigpipe_received)
6079 			break;
6080 
6081 		te = got_object_tree_get_entry(tree, i);
6082 		if (show_ids) {
6083 			char *id_str;
6084 			err = got_object_id_str(&id_str,
6085 			    got_tree_entry_get_id(te));
6086 			if (err)
6087 				goto done;
6088 			if (asprintf(&id, "%s ", id_str) == -1) {
6089 				err = got_error_from_errno("asprintf");
6090 				free(id_str);
6091 				goto done;
6092 			}
6093 			free(id_str);
6094 		}
6095 		err = print_entry(te, id, path, root_path, repo);
6096 		free(id);
6097 		if (err)
6098 			goto done;
6099 
6100 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
6101 			char *child_path;
6102 			if (asprintf(&child_path, "%s%s%s", path,
6103 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
6104 			    got_tree_entry_get_name(te)) == -1) {
6105 				err = got_error_from_errno("asprintf");
6106 				goto done;
6107 			}
6108 			err = print_tree(child_path, commit, show_ids, 1,
6109 			    root_path, repo);
6110 			free(child_path);
6111 			if (err)
6112 				goto done;
6113 		}
6114 	}
6115 done:
6116 	if (tree)
6117 		got_object_tree_close(tree);
6118 	free(tree_id);
6119 	return err;
6120 }
6121 
6122 static const struct got_error *
6123 cmd_tree(int argc, char *argv[])
6124 {
6125 	const struct got_error *error;
6126 	struct got_repository *repo = NULL;
6127 	struct got_worktree *worktree = NULL;
6128 	const char *path, *refname = NULL;
6129 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
6130 	struct got_object_id *commit_id = NULL;
6131 	struct got_commit_object *commit = NULL;
6132 	char *commit_id_str = NULL, *keyword_idstr = NULL;
6133 	int show_ids = 0, recurse = 0;
6134 	int ch;
6135 	int *pack_fds = NULL;
6136 
6137 #ifndef PROFILE
6138 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6139 	    NULL) == -1)
6140 		err(1, "pledge");
6141 #endif
6142 
6143 	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
6144 		switch (ch) {
6145 		case 'c':
6146 			commit_id_str = optarg;
6147 			break;
6148 		case 'i':
6149 			show_ids = 1;
6150 			break;
6151 		case 'R':
6152 			recurse = 1;
6153 			break;
6154 		case 'r':
6155 			repo_path = realpath(optarg, NULL);
6156 			if (repo_path == NULL)
6157 				return got_error_from_errno2("realpath",
6158 				    optarg);
6159 			got_path_strip_trailing_slashes(repo_path);
6160 			break;
6161 		default:
6162 			usage_tree();
6163 			/* NOTREACHED */
6164 		}
6165 	}
6166 
6167 	argc -= optind;
6168 	argv += optind;
6169 
6170 	if (argc == 1)
6171 		path = argv[0];
6172 	else if (argc > 1)
6173 		usage_tree();
6174 	else
6175 		path = NULL;
6176 
6177 	cwd = getcwd(NULL, 0);
6178 	if (cwd == NULL) {
6179 		error = got_error_from_errno("getcwd");
6180 		goto done;
6181 	}
6182 
6183 	error = got_repo_pack_fds_open(&pack_fds);
6184 	if (error != NULL)
6185 		goto done;
6186 
6187 	if (repo_path == NULL) {
6188 		error = got_worktree_open(&worktree, cwd,
6189 		    GOT_WORKTREE_GOT_DIR);
6190 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6191 			goto done;
6192 		else
6193 			error = NULL;
6194 		if (worktree) {
6195 			repo_path =
6196 			    strdup(got_worktree_get_repo_path(worktree));
6197 			if (repo_path == NULL)
6198 				error = got_error_from_errno("strdup");
6199 			if (error)
6200 				goto done;
6201 		} else {
6202 			repo_path = strdup(cwd);
6203 			if (repo_path == NULL) {
6204 				error = got_error_from_errno("strdup");
6205 				goto done;
6206 			}
6207 		}
6208 	}
6209 
6210 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6211 	if (error != NULL)
6212 		goto done;
6213 
6214 	if (worktree) {
6215 		const char *prefix = got_worktree_get_path_prefix(worktree);
6216 		char *p;
6217 
6218 		if (path == NULL || got_path_is_root_dir(path))
6219 			path = "";
6220 		error = got_worktree_resolve_path(&p, worktree, path);
6221 		if (error)
6222 			goto done;
6223 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
6224 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
6225 		    p) == -1) {
6226 			error = got_error_from_errno("asprintf");
6227 			free(p);
6228 			goto done;
6229 		}
6230 		free(p);
6231 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6232 		if (error)
6233 			goto done;
6234 	} else {
6235 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6236 		if (error)
6237 			goto done;
6238 		if (path == NULL)
6239 			path = "/";
6240 		error = got_repo_map_path(&in_repo_path, repo, path);
6241 		if (error != NULL)
6242 			goto done;
6243 	}
6244 
6245 	if (commit_id_str == NULL) {
6246 		struct got_reference *head_ref;
6247 		if (worktree)
6248 			refname = got_worktree_get_head_ref_name(worktree);
6249 		else
6250 			refname = GOT_REF_HEAD;
6251 		error = got_ref_open(&head_ref, repo, refname, 0);
6252 		if (error != NULL)
6253 			goto done;
6254 		error = got_ref_resolve(&commit_id, repo, head_ref);
6255 		got_ref_close(head_ref);
6256 		if (error != NULL)
6257 			goto done;
6258 	} else {
6259 		struct got_reflist_head refs;
6260 
6261 		TAILQ_INIT(&refs);
6262 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6263 		    NULL);
6264 		if (error)
6265 			goto done;
6266 
6267 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
6268 		    repo, worktree);
6269 		if (error != NULL)
6270 			goto done;
6271 		if (keyword_idstr != NULL)
6272 			commit_id_str = keyword_idstr;
6273 
6274 		error = got_repo_match_object_id(&commit_id, NULL,
6275 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6276 		got_ref_list_free(&refs);
6277 		if (error)
6278 			goto done;
6279 	}
6280 
6281 	if (worktree) {
6282 		/* Release work tree lock. */
6283 		got_worktree_close(worktree);
6284 		worktree = NULL;
6285 	}
6286 
6287 	error = got_object_open_as_commit(&commit, repo, commit_id);
6288 	if (error)
6289 		goto done;
6290 
6291 	error = print_tree(in_repo_path, commit, show_ids, recurse,
6292 	    in_repo_path, repo);
6293 done:
6294 	free(keyword_idstr);
6295 	free(in_repo_path);
6296 	free(repo_path);
6297 	free(cwd);
6298 	free(commit_id);
6299 	if (commit)
6300 		got_object_commit_close(commit);
6301 	if (worktree)
6302 		got_worktree_close(worktree);
6303 	if (repo) {
6304 		const struct got_error *close_err = got_repo_close(repo);
6305 		if (error == NULL)
6306 			error = close_err;
6307 	}
6308 	if (pack_fds) {
6309 		const struct got_error *pack_err =
6310 		    got_repo_pack_fds_close(pack_fds);
6311 		if (error == NULL)
6312 			error = pack_err;
6313 	}
6314 	return error;
6315 }
6316 
6317 __dead static void
6318 usage_status(void)
6319 {
6320 	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
6321 	    "[-s status-codes] [path ...]\n", getprogname());
6322 	exit(1);
6323 }
6324 
6325 struct got_status_arg {
6326 	char *status_codes;
6327 	int suppress;
6328 };
6329 
6330 static const struct got_error *
6331 print_status(void *arg, unsigned char status, unsigned char staged_status,
6332     const char *path, struct got_object_id *blob_id,
6333     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
6334     int dirfd, const char *de_name)
6335 {
6336 	struct got_status_arg *st = arg;
6337 
6338 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6339 		status = GOT_STATUS_NO_CHANGE;
6340 	if (st != NULL && st->status_codes) {
6341 		size_t ncodes = strlen(st->status_codes);
6342 		int i, j = 0;
6343 
6344 		for (i = 0; i < ncodes ; i++) {
6345 			if (st->suppress) {
6346 				if (status == st->status_codes[i] ||
6347 				    staged_status == st->status_codes[i]) {
6348 					j++;
6349 					continue;
6350 				}
6351 			} else {
6352 				if (status == st->status_codes[i] ||
6353 				    staged_status == st->status_codes[i])
6354 					break;
6355 			}
6356 		}
6357 
6358 		if (st->suppress && j == 0)
6359 			goto print;
6360 
6361 		if (i == ncodes)
6362 			return NULL;
6363 	}
6364 print:
6365 	printf("%c%c %s\n", status, staged_status, path);
6366 	return NULL;
6367 }
6368 
6369 static const struct got_error *
6370 cmd_status(int argc, char *argv[])
6371 {
6372 	const struct got_error *error = NULL;
6373 	struct got_repository *repo = NULL;
6374 	struct got_worktree *worktree = NULL;
6375 	struct got_status_arg st;
6376 	char *cwd = NULL;
6377 	struct got_pathlist_head paths;
6378 	int ch, i, no_ignores = 0;
6379 	int *pack_fds = NULL;
6380 
6381 	TAILQ_INIT(&paths);
6382 
6383 	memset(&st, 0, sizeof(st));
6384 	st.status_codes = NULL;
6385 	st.suppress = 0;
6386 
6387 #ifndef PROFILE
6388 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6389 	    NULL) == -1)
6390 		err(1, "pledge");
6391 #endif
6392 
6393 	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
6394 		switch (ch) {
6395 		case 'I':
6396 			no_ignores = 1;
6397 			break;
6398 		case 'S':
6399 			if (st.status_codes != NULL && st.suppress == 0)
6400 				option_conflict('S', 's');
6401 			st.suppress = 1;
6402 			/* fallthrough */
6403 		case 's':
6404 			for (i = 0; optarg[i] != '\0'; i++) {
6405 				switch (optarg[i]) {
6406 				case GOT_STATUS_MODIFY:
6407 				case GOT_STATUS_ADD:
6408 				case GOT_STATUS_DELETE:
6409 				case GOT_STATUS_CONFLICT:
6410 				case GOT_STATUS_MISSING:
6411 				case GOT_STATUS_OBSTRUCTED:
6412 				case GOT_STATUS_UNVERSIONED:
6413 				case GOT_STATUS_MODE_CHANGE:
6414 				case GOT_STATUS_NONEXISTENT:
6415 					break;
6416 				default:
6417 					errx(1, "invalid status code '%c'",
6418 					    optarg[i]);
6419 				}
6420 			}
6421 			if (ch == 's' && st.suppress)
6422 				option_conflict('s', 'S');
6423 			st.status_codes = optarg;
6424 			break;
6425 		default:
6426 			usage_status();
6427 			/* NOTREACHED */
6428 		}
6429 	}
6430 
6431 	argc -= optind;
6432 	argv += optind;
6433 
6434 	cwd = getcwd(NULL, 0);
6435 	if (cwd == NULL) {
6436 		error = got_error_from_errno("getcwd");
6437 		goto done;
6438 	}
6439 
6440 	error = got_repo_pack_fds_open(&pack_fds);
6441 	if (error != NULL)
6442 		goto done;
6443 
6444 	error = got_worktree_open(&worktree, cwd,
6445 	    GOT_WORKTREE_GOT_DIR);
6446 	if (error) {
6447 		if (error->code == GOT_ERR_NOT_WORKTREE)
6448 			error = wrap_not_worktree_error(error, "status", cwd);
6449 		goto done;
6450 	}
6451 
6452 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6453 	    NULL, pack_fds);
6454 	if (error != NULL)
6455 		goto done;
6456 
6457 	error = apply_unveil(got_repo_get_path(repo), 1,
6458 	    got_worktree_get_root_path(worktree));
6459 	if (error)
6460 		goto done;
6461 
6462 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6463 	if (error)
6464 		goto done;
6465 
6466 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
6467 	    print_status, &st, check_cancelled, NULL);
6468 done:
6469 	if (pack_fds) {
6470 		const struct got_error *pack_err =
6471 		    got_repo_pack_fds_close(pack_fds);
6472 		if (error == NULL)
6473 			error = pack_err;
6474 	}
6475 	if (repo) {
6476 		const struct got_error *close_err = got_repo_close(repo);
6477 		if (error == NULL)
6478 			error = close_err;
6479 	}
6480 
6481 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6482 	free(cwd);
6483 	return error;
6484 }
6485 
6486 __dead static void
6487 usage_ref(void)
6488 {
6489 	fprintf(stderr, "usage: %s ref [-dlt] [-c object] [-r repository-path] "
6490 	    "[-s reference] [name]\n", getprogname());
6491 	exit(1);
6492 }
6493 
6494 static const struct got_error *
6495 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
6496 {
6497 	static const struct got_error *err = NULL;
6498 	struct got_reflist_head refs;
6499 	struct got_reflist_entry *re;
6500 
6501 	TAILQ_INIT(&refs);
6502 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
6503 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6504 	    repo);
6505 	if (err)
6506 		return err;
6507 
6508 	TAILQ_FOREACH(re, &refs, entry) {
6509 		char *refstr;
6510 		refstr = got_ref_to_str(re->ref);
6511 		if (refstr == NULL) {
6512 			err = got_error_from_errno("got_ref_to_str");
6513 			break;
6514 		}
6515 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
6516 		free(refstr);
6517 	}
6518 
6519 	got_ref_list_free(&refs);
6520 	return err;
6521 }
6522 
6523 static const struct got_error *
6524 delete_ref_by_name(struct got_repository *repo, const char *refname)
6525 {
6526 	const struct got_error *err;
6527 	struct got_reference *ref;
6528 
6529 	err = got_ref_open(&ref, repo, refname, 0);
6530 	if (err)
6531 		return err;
6532 
6533 	err = delete_ref(repo, ref);
6534 	got_ref_close(ref);
6535 	return err;
6536 }
6537 
6538 static const struct got_error *
6539 add_ref(struct got_repository *repo, const char *refname, const char *target)
6540 {
6541 	const struct got_error *err = NULL;
6542 	struct got_object_id *id = NULL;
6543 	struct got_reference *ref = NULL;
6544 	struct got_reflist_head refs;
6545 
6546 	/*
6547 	 * Don't let the user create a reference name with a leading '-'.
6548 	 * While technically a valid reference name, this case is usually
6549 	 * an unintended typo.
6550 	 */
6551 	if (refname[0] == '-')
6552 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6553 
6554 	TAILQ_INIT(&refs);
6555 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6556 	if (err)
6557 		goto done;
6558 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
6559 	    &refs, repo);
6560 	got_ref_list_free(&refs);
6561 	if (err)
6562 		goto done;
6563 
6564 	err = got_ref_alloc(&ref, refname, id);
6565 	if (err)
6566 		goto done;
6567 
6568 	err = got_ref_write(ref, repo);
6569 done:
6570 	if (ref)
6571 		got_ref_close(ref);
6572 	free(id);
6573 	return err;
6574 }
6575 
6576 static const struct got_error *
6577 add_symref(struct got_repository *repo, const char *refname, const char *target)
6578 {
6579 	const struct got_error *err = NULL;
6580 	struct got_reference *ref = NULL;
6581 	struct got_reference *target_ref = NULL;
6582 
6583 	/*
6584 	 * Don't let the user create a reference name with a leading '-'.
6585 	 * While technically a valid reference name, this case is usually
6586 	 * an unintended typo.
6587 	 */
6588 	if (refname[0] == '-')
6589 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6590 
6591 	err = got_ref_open(&target_ref, repo, target, 0);
6592 	if (err)
6593 		return err;
6594 
6595 	err = got_ref_alloc_symref(&ref, refname, target_ref);
6596 	if (err)
6597 		goto done;
6598 
6599 	err = got_ref_write(ref, repo);
6600 done:
6601 	if (target_ref)
6602 		got_ref_close(target_ref);
6603 	if (ref)
6604 		got_ref_close(ref);
6605 	return err;
6606 }
6607 
6608 static const struct got_error *
6609 cmd_ref(int argc, char *argv[])
6610 {
6611 	const struct got_error *error = NULL;
6612 	struct got_repository *repo = NULL;
6613 	struct got_worktree *worktree = NULL;
6614 	char *cwd = NULL, *repo_path = NULL;
6615 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
6616 	const char *obj_arg = NULL, *symref_target= NULL;
6617 	char *refname = NULL, *keyword_idstr = NULL;
6618 	int *pack_fds = NULL;
6619 
6620 #ifndef PROFILE
6621 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6622 	    "sendfd unveil", NULL) == -1)
6623 		err(1, "pledge");
6624 #endif
6625 
6626 	while ((ch = getopt(argc, argv, "c:dlr:s:t")) != -1) {
6627 		switch (ch) {
6628 		case 'c':
6629 			obj_arg = optarg;
6630 			break;
6631 		case 'd':
6632 			do_delete = 1;
6633 			break;
6634 		case 'l':
6635 			do_list = 1;
6636 			break;
6637 		case 'r':
6638 			repo_path = realpath(optarg, NULL);
6639 			if (repo_path == NULL)
6640 				return got_error_from_errno2("realpath",
6641 				    optarg);
6642 			got_path_strip_trailing_slashes(repo_path);
6643 			break;
6644 		case 's':
6645 			symref_target = optarg;
6646 			break;
6647 		case 't':
6648 			sort_by_time = 1;
6649 			break;
6650 		default:
6651 			usage_ref();
6652 			/* NOTREACHED */
6653 		}
6654 	}
6655 
6656 	if (obj_arg && do_list)
6657 		option_conflict('c', 'l');
6658 	if (obj_arg && do_delete)
6659 		option_conflict('c', 'd');
6660 	if (obj_arg && symref_target)
6661 		option_conflict('c', 's');
6662 	if (symref_target && do_delete)
6663 		option_conflict('s', 'd');
6664 	if (symref_target && do_list)
6665 		option_conflict('s', 'l');
6666 	if (do_delete && do_list)
6667 		option_conflict('d', 'l');
6668 	if (sort_by_time && !do_list)
6669 		errx(1, "-t option requires -l option");
6670 
6671 	argc -= optind;
6672 	argv += optind;
6673 
6674 	if (do_list) {
6675 		if (argc != 0 && argc != 1)
6676 			usage_ref();
6677 		if (argc == 1) {
6678 			refname = strdup(argv[0]);
6679 			if (refname == NULL) {
6680 				error = got_error_from_errno("strdup");
6681 				goto done;
6682 			}
6683 		}
6684 	} else {
6685 		if (argc != 1)
6686 			usage_ref();
6687 		refname = strdup(argv[0]);
6688 		if (refname == NULL) {
6689 			error = got_error_from_errno("strdup");
6690 			goto done;
6691 		}
6692 	}
6693 
6694 	if (refname)
6695 		got_path_strip_trailing_slashes(refname);
6696 
6697 	cwd = getcwd(NULL, 0);
6698 	if (cwd == NULL) {
6699 		error = got_error_from_errno("getcwd");
6700 		goto done;
6701 	}
6702 
6703 	error = got_repo_pack_fds_open(&pack_fds);
6704 	if (error != NULL)
6705 		goto done;
6706 
6707 	if (repo_path == NULL) {
6708 		error = got_worktree_open(&worktree, cwd,
6709 		    GOT_WORKTREE_GOT_DIR);
6710 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6711 			goto done;
6712 		else
6713 			error = NULL;
6714 		if (worktree) {
6715 			repo_path =
6716 			    strdup(got_worktree_get_repo_path(worktree));
6717 			if (repo_path == NULL)
6718 				error = got_error_from_errno("strdup");
6719 			if (error)
6720 				goto done;
6721 		} else {
6722 			repo_path = strdup(cwd);
6723 			if (repo_path == NULL) {
6724 				error = got_error_from_errno("strdup");
6725 				goto done;
6726 			}
6727 		}
6728 	}
6729 
6730 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6731 	if (error != NULL)
6732 		goto done;
6733 
6734 #ifndef PROFILE
6735 	if (do_list) {
6736 		/* Remove "cpath" promise. */
6737 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6738 		    NULL) == -1)
6739 			err(1, "pledge");
6740 	}
6741 #endif
6742 
6743 	error = apply_unveil(got_repo_get_path(repo), do_list,
6744 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6745 	if (error)
6746 		goto done;
6747 
6748 	if (do_list)
6749 		error = list_refs(repo, refname, sort_by_time);
6750 	else if (do_delete)
6751 		error = delete_ref_by_name(repo, refname);
6752 	else if (symref_target)
6753 		error = add_symref(repo, refname, symref_target);
6754 	else {
6755 		if (obj_arg == NULL)
6756 			usage_ref();
6757 
6758 		error = got_keyword_to_idstr(&keyword_idstr, obj_arg,
6759 		    repo, worktree);
6760 		if (error != NULL)
6761 			goto done;
6762 		if (keyword_idstr != NULL)
6763 			obj_arg = keyword_idstr;
6764 
6765 		error = add_ref(repo, refname, obj_arg);
6766 	}
6767 done:
6768 	free(refname);
6769 	if (repo) {
6770 		const struct got_error *close_err = got_repo_close(repo);
6771 		if (error == NULL)
6772 			error = close_err;
6773 	}
6774 	if (worktree)
6775 		got_worktree_close(worktree);
6776 	if (pack_fds) {
6777 		const struct got_error *pack_err =
6778 		    got_repo_pack_fds_close(pack_fds);
6779 		if (error == NULL)
6780 			error = pack_err;
6781 	}
6782 	free(cwd);
6783 	free(repo_path);
6784 	free(keyword_idstr);
6785 	return error;
6786 }
6787 
6788 __dead static void
6789 usage_branch(void)
6790 {
6791 	fprintf(stderr, "usage: %s branch [-lnt] [-c commit] [-d name] "
6792 	    "[-r repository-path] [name]\n", getprogname());
6793 	exit(1);
6794 }
6795 
6796 static const struct got_error *
6797 list_branch(struct got_repository *repo, struct got_worktree *worktree,
6798     struct got_reference *ref)
6799 {
6800 	const struct got_error *err = NULL;
6801 	const char *refname;
6802 	char *refstr;
6803 	char marker = ' ';
6804 
6805 	refname = got_ref_get_name(ref);
6806 	if (worktree && strcmp(refname,
6807 	    got_worktree_get_head_ref_name(worktree)) == 0) {
6808 		err = got_worktree_get_state(&marker, repo, worktree,
6809 		    check_cancelled, NULL);
6810 		if (err != NULL)
6811 			return err;
6812 	}
6813 
6814 	if (strncmp(refname, "refs/heads/", 11) == 0)
6815 		refname += 11;
6816 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6817 		refname += 18;
6818 	if (strncmp(refname, "refs/remotes/", 13) == 0)
6819 		refname += 13;
6820 
6821 	refstr = got_ref_to_str(ref);
6822 	if (refstr == NULL)
6823 		return got_error_from_errno("got_ref_to_str");
6824 
6825 	printf("%c %s: %s\n", marker, refname, refstr);
6826 	free(refstr);
6827 	return NULL;
6828 }
6829 
6830 static const struct got_error *
6831 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
6832 {
6833 	const char *refname;
6834 
6835 	if (worktree == NULL)
6836 		return got_error(GOT_ERR_NOT_WORKTREE);
6837 
6838 	refname = got_worktree_get_head_ref_name(worktree);
6839 
6840 	if (strncmp(refname, "refs/heads/", 11) == 0)
6841 		refname += 11;
6842 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6843 		refname += 18;
6844 
6845 	printf("%s\n", refname);
6846 
6847 	return NULL;
6848 }
6849 
6850 static const struct got_error *
6851 list_branches(struct got_repository *repo, struct got_worktree *worktree,
6852     int sort_by_time)
6853 {
6854 	static const struct got_error *err = NULL;
6855 	struct got_reflist_head refs;
6856 	struct got_reflist_entry *re;
6857 	struct got_reference *temp_ref = NULL;
6858 	int rebase_in_progress, histedit_in_progress;
6859 
6860 	TAILQ_INIT(&refs);
6861 
6862 	if (worktree) {
6863 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
6864 		    worktree);
6865 		if (err)
6866 			return err;
6867 
6868 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
6869 		    worktree);
6870 		if (err)
6871 			return err;
6872 
6873 		if (rebase_in_progress || histedit_in_progress) {
6874 			err = got_ref_open(&temp_ref, repo,
6875 			    got_worktree_get_head_ref_name(worktree), 0);
6876 			if (err)
6877 				return err;
6878 			list_branch(repo, worktree, temp_ref);
6879 			got_ref_close(temp_ref);
6880 		}
6881 	}
6882 
6883 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
6884 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6885 	    repo);
6886 	if (err)
6887 		return err;
6888 
6889 	TAILQ_FOREACH(re, &refs, entry)
6890 		list_branch(repo, worktree, re->ref);
6891 
6892 	got_ref_list_free(&refs);
6893 
6894 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
6895 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6896 	    repo);
6897 	if (err)
6898 		return err;
6899 
6900 	TAILQ_FOREACH(re, &refs, entry)
6901 		list_branch(repo, worktree, re->ref);
6902 
6903 	got_ref_list_free(&refs);
6904 
6905 	return NULL;
6906 }
6907 
6908 static const struct got_error *
6909 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
6910     const char *branch_name)
6911 {
6912 	const struct got_error *err = NULL;
6913 	struct got_reference *ref = NULL;
6914 	char *refname, *remote_refname = NULL;
6915 
6916 	if (strncmp(branch_name, "refs/", 5) == 0)
6917 		branch_name += 5;
6918 	if (strncmp(branch_name, "heads/", 6) == 0)
6919 		branch_name += 6;
6920 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6921 		branch_name += 8;
6922 
6923 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6924 		return got_error_from_errno("asprintf");
6925 
6926 	if (asprintf(&remote_refname, "refs/remotes/%s",
6927 	    branch_name) == -1) {
6928 		err = got_error_from_errno("asprintf");
6929 		goto done;
6930 	}
6931 
6932 	err = got_ref_open(&ref, repo, refname, 0);
6933 	if (err) {
6934 		const struct got_error *err2;
6935 		if (err->code != GOT_ERR_NOT_REF)
6936 			goto done;
6937 		/*
6938 		 * Keep 'err' intact such that if neither branch exists
6939 		 * we report "refs/heads" rather than "refs/remotes" in
6940 		 * our error message.
6941 		 */
6942 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6943 		if (err2)
6944 			goto done;
6945 		err = NULL;
6946 	}
6947 
6948 	if (worktree &&
6949 	    strcmp(got_worktree_get_head_ref_name(worktree),
6950 	    got_ref_get_name(ref)) == 0) {
6951 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6952 		    "will not delete this work tree's current branch");
6953 		goto done;
6954 	}
6955 
6956 	err = delete_ref(repo, ref);
6957 done:
6958 	if (ref)
6959 		got_ref_close(ref);
6960 	free(refname);
6961 	free(remote_refname);
6962 	return err;
6963 }
6964 
6965 static const struct got_error *
6966 add_branch(struct got_repository *repo, const char *branch_name,
6967     struct got_object_id *base_commit_id)
6968 {
6969 	const struct got_error *err = NULL;
6970 	struct got_reference *ref = NULL;
6971 	char *refname = NULL;
6972 
6973 	/*
6974 	 * Don't let the user create a branch name with a leading '-'.
6975 	 * While technically a valid reference name, this case is usually
6976 	 * an unintended typo.
6977 	 */
6978 	if (branch_name[0] == '-')
6979 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6980 
6981 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6982 		branch_name += 11;
6983 
6984 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6985 		err = got_error_from_errno("asprintf");
6986 		goto done;
6987 	}
6988 
6989 	err = got_ref_open(&ref, repo, refname, 0);
6990 	if (err == NULL) {
6991 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6992 		goto done;
6993 	} else if (err->code != GOT_ERR_NOT_REF)
6994 		goto done;
6995 
6996 	err = got_ref_alloc(&ref, refname, base_commit_id);
6997 	if (err)
6998 		goto done;
6999 
7000 	err = got_ref_write(ref, repo);
7001 done:
7002 	if (ref)
7003 		got_ref_close(ref);
7004 	free(refname);
7005 	return err;
7006 }
7007 
7008 static const struct got_error *
7009 cmd_branch(int argc, char *argv[])
7010 {
7011 	const struct got_error *error = NULL;
7012 	struct got_repository *repo = NULL;
7013 	struct got_worktree *worktree = NULL;
7014 	char *cwd = NULL, *repo_path = NULL;
7015 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
7016 	const char *delref = NULL, *commit_id_arg = NULL;
7017 	struct got_reference *ref = NULL;
7018 	struct got_pathlist_head paths;
7019 	struct got_object_id *commit_id = NULL;
7020 	char *commit_id_str = NULL, *keyword_idstr = NULL;;
7021 	int *pack_fds = NULL;
7022 
7023 	TAILQ_INIT(&paths);
7024 
7025 #ifndef PROFILE
7026 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7027 	    "sendfd unveil", NULL) == -1)
7028 		err(1, "pledge");
7029 #endif
7030 
7031 	while ((ch = getopt(argc, argv, "c:d:lnr:t")) != -1) {
7032 		switch (ch) {
7033 		case 'c':
7034 			commit_id_arg = optarg;
7035 			break;
7036 		case 'd':
7037 			delref = optarg;
7038 			break;
7039 		case 'l':
7040 			do_list = 1;
7041 			break;
7042 		case 'n':
7043 			do_update = 0;
7044 			break;
7045 		case 'r':
7046 			repo_path = realpath(optarg, NULL);
7047 			if (repo_path == NULL)
7048 				return got_error_from_errno2("realpath",
7049 				    optarg);
7050 			got_path_strip_trailing_slashes(repo_path);
7051 			break;
7052 		case 't':
7053 			sort_by_time = 1;
7054 			break;
7055 		default:
7056 			usage_branch();
7057 			/* NOTREACHED */
7058 		}
7059 	}
7060 
7061 	if (do_list && delref)
7062 		option_conflict('l', 'd');
7063 	if (sort_by_time && !do_list)
7064 		errx(1, "-t option requires -l option");
7065 
7066 	argc -= optind;
7067 	argv += optind;
7068 
7069 	if (!do_list && !delref && argc == 0)
7070 		do_show = 1;
7071 
7072 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
7073 		errx(1, "-c option can only be used when creating a branch");
7074 
7075 	if (do_list || delref) {
7076 		if (argc > 0)
7077 			usage_branch();
7078 	} else if (!do_show && argc != 1)
7079 		usage_branch();
7080 
7081 	cwd = getcwd(NULL, 0);
7082 	if (cwd == NULL) {
7083 		error = got_error_from_errno("getcwd");
7084 		goto done;
7085 	}
7086 
7087 	error = got_repo_pack_fds_open(&pack_fds);
7088 	if (error != NULL)
7089 		goto done;
7090 
7091 	if (repo_path == NULL) {
7092 		error = got_worktree_open(&worktree, cwd,
7093 		    GOT_WORKTREE_GOT_DIR);
7094 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7095 			goto done;
7096 		else
7097 			error = NULL;
7098 		if (worktree) {
7099 			repo_path =
7100 			    strdup(got_worktree_get_repo_path(worktree));
7101 			if (repo_path == NULL)
7102 				error = got_error_from_errno("strdup");
7103 			if (error)
7104 				goto done;
7105 		} else {
7106 			repo_path = strdup(cwd);
7107 			if (repo_path == NULL) {
7108 				error = got_error_from_errno("strdup");
7109 				goto done;
7110 			}
7111 		}
7112 	}
7113 
7114 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7115 	if (error != NULL)
7116 		goto done;
7117 
7118 #ifndef PROFILE
7119 	if (do_list || do_show) {
7120 		/* Remove "cpath" promise. */
7121 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
7122 		    NULL) == -1)
7123 			err(1, "pledge");
7124 	}
7125 #endif
7126 
7127 	error = apply_unveil(got_repo_get_path(repo), do_list,
7128 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
7129 	if (error)
7130 		goto done;
7131 
7132 	if (do_show)
7133 		error = show_current_branch(repo, worktree);
7134 	else if (do_list)
7135 		error = list_branches(repo, worktree, sort_by_time);
7136 	else if (delref)
7137 		error = delete_branch(repo, worktree, delref);
7138 	else {
7139 		struct got_reflist_head refs;
7140 		TAILQ_INIT(&refs);
7141 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
7142 		    NULL);
7143 		if (error)
7144 			goto done;
7145 		if (commit_id_arg == NULL)
7146 			commit_id_arg = worktree ?
7147 			    got_worktree_get_head_ref_name(worktree) :
7148 			    GOT_REF_HEAD;
7149 		else {
7150 			error = got_keyword_to_idstr(&keyword_idstr,
7151 			    commit_id_arg, repo, worktree);
7152 			if (error != NULL)
7153 				goto done;
7154 			if (keyword_idstr != NULL)
7155 				commit_id_arg = keyword_idstr;
7156 		}
7157 		error = got_repo_match_object_id(&commit_id, NULL,
7158 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
7159 		got_ref_list_free(&refs);
7160 		if (error)
7161 			goto done;
7162 		error = add_branch(repo, argv[0], commit_id);
7163 		if (error)
7164 			goto done;
7165 		if (worktree && do_update) {
7166 			struct got_update_progress_arg upa;
7167 			char *branch_refname = NULL;
7168 
7169 			error = got_object_id_str(&commit_id_str, commit_id);
7170 			if (error)
7171 				goto done;
7172 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
7173 			    worktree);
7174 			if (error)
7175 				goto done;
7176 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
7177 			    == -1) {
7178 				error = got_error_from_errno("asprintf");
7179 				goto done;
7180 			}
7181 			error = got_ref_open(&ref, repo, branch_refname, 0);
7182 			free(branch_refname);
7183 			if (error)
7184 				goto done;
7185 			error = switch_head_ref(ref, commit_id, worktree,
7186 			    repo);
7187 			if (error)
7188 				goto done;
7189 			error = got_worktree_set_base_commit_id(worktree, repo,
7190 			    commit_id);
7191 			if (error)
7192 				goto done;
7193 			memset(&upa, 0, sizeof(upa));
7194 			error = got_worktree_checkout_files(worktree, &paths,
7195 			    repo, update_progress, &upa, check_cancelled,
7196 			    NULL);
7197 			if (error)
7198 				goto done;
7199 			if (upa.did_something) {
7200 				printf("Updated to %s: %s\n",
7201 				    got_worktree_get_head_ref_name(worktree),
7202 				    commit_id_str);
7203 			}
7204 			print_update_progress_stats(&upa);
7205 		}
7206 	}
7207 done:
7208 	free(keyword_idstr);
7209 	if (ref)
7210 		got_ref_close(ref);
7211 	if (repo) {
7212 		const struct got_error *close_err = got_repo_close(repo);
7213 		if (error == NULL)
7214 			error = close_err;
7215 	}
7216 	if (worktree)
7217 		got_worktree_close(worktree);
7218 	if (pack_fds) {
7219 		const struct got_error *pack_err =
7220 		    got_repo_pack_fds_close(pack_fds);
7221 		if (error == NULL)
7222 			error = pack_err;
7223 	}
7224 	free(cwd);
7225 	free(repo_path);
7226 	free(commit_id);
7227 	free(commit_id_str);
7228 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7229 	return error;
7230 }
7231 
7232 
7233 __dead static void
7234 usage_tag(void)
7235 {
7236 	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
7237 	    "[-r repository-path] [-s signer-id] name\n", getprogname());
7238 	exit(1);
7239 }
7240 
7241 #if 0
7242 static const struct got_error *
7243 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
7244 {
7245 	const struct got_error *err = NULL;
7246 	struct got_reflist_entry *re, *se, *new;
7247 	struct got_object_id *re_id, *se_id;
7248 	struct got_tag_object *re_tag, *se_tag;
7249 	time_t re_time, se_time;
7250 
7251 	STAILQ_FOREACH(re, tags, entry) {
7252 		se = STAILQ_FIRST(sorted);
7253 		if (se == NULL) {
7254 			err = got_reflist_entry_dup(&new, re);
7255 			if (err)
7256 				return err;
7257 			STAILQ_INSERT_HEAD(sorted, new, entry);
7258 			continue;
7259 		} else {
7260 			err = got_ref_resolve(&re_id, repo, re->ref);
7261 			if (err)
7262 				break;
7263 			err = got_object_open_as_tag(&re_tag, repo, re_id);
7264 			free(re_id);
7265 			if (err)
7266 				break;
7267 			re_time = got_object_tag_get_tagger_time(re_tag);
7268 			got_object_tag_close(re_tag);
7269 		}
7270 
7271 		while (se) {
7272 			err = got_ref_resolve(&se_id, repo, re->ref);
7273 			if (err)
7274 				break;
7275 			err = got_object_open_as_tag(&se_tag, repo, se_id);
7276 			free(se_id);
7277 			if (err)
7278 				break;
7279 			se_time = got_object_tag_get_tagger_time(se_tag);
7280 			got_object_tag_close(se_tag);
7281 
7282 			if (se_time > re_time) {
7283 				err = got_reflist_entry_dup(&new, re);
7284 				if (err)
7285 					return err;
7286 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
7287 				break;
7288 			}
7289 			se = STAILQ_NEXT(se, entry);
7290 			continue;
7291 		}
7292 	}
7293 done:
7294 	return err;
7295 }
7296 #endif
7297 
7298 static const struct got_error *
7299 get_tag_refname(char **refname, const char *tag_name)
7300 {
7301 	const struct got_error *err;
7302 
7303 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
7304 		*refname = strdup(tag_name);
7305 		if (*refname == NULL)
7306 			return got_error_from_errno("strdup");
7307 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
7308 		err = got_error_from_errno("asprintf");
7309 		*refname = NULL;
7310 		return err;
7311 	}
7312 
7313 	return NULL;
7314 }
7315 
7316 static const struct got_error *
7317 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
7318     const char *allowed_signers, const char *revoked_signers, int verbosity)
7319 {
7320 	static const struct got_error *err = NULL;
7321 	struct got_reflist_head refs;
7322 	struct got_reflist_entry *re;
7323 	char *wanted_refname = NULL;
7324 	int bad_sigs = 0;
7325 
7326 	TAILQ_INIT(&refs);
7327 
7328 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
7329 	if (err)
7330 		return err;
7331 
7332 	if (tag_name) {
7333 		struct got_reference *ref;
7334 		err = get_tag_refname(&wanted_refname, tag_name);
7335 		if (err)
7336 			goto done;
7337 		/* Wanted tag reference should exist. */
7338 		err = got_ref_open(&ref, repo, wanted_refname, 0);
7339 		if (err)
7340 			goto done;
7341 		got_ref_close(ref);
7342 	}
7343 
7344 	TAILQ_FOREACH(re, &refs, entry) {
7345 		const char *refname;
7346 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
7347 		char datebuf[26];
7348 		const char *tagger, *ssh_sig = NULL;
7349 		char *sig_msg = NULL;
7350 		time_t tagger_time;
7351 		struct got_object_id *id;
7352 		struct got_tag_object *tag;
7353 		struct got_commit_object *commit = NULL;
7354 
7355 		refname = got_ref_get_name(re->ref);
7356 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
7357 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
7358 			continue;
7359 		refname += 10;
7360 		refstr = got_ref_to_str(re->ref);
7361 		if (refstr == NULL) {
7362 			err = got_error_from_errno("got_ref_to_str");
7363 			break;
7364 		}
7365 
7366 		err = got_ref_resolve(&id, repo, re->ref);
7367 		if (err)
7368 			break;
7369 		err = got_object_open_as_tag(&tag, repo, id);
7370 		if (err) {
7371 			if (err->code != GOT_ERR_OBJ_TYPE) {
7372 				free(id);
7373 				break;
7374 			}
7375 			/* "lightweight" tag */
7376 			err = got_object_open_as_commit(&commit, repo, id);
7377 			if (err) {
7378 				free(id);
7379 				break;
7380 			}
7381 			tagger = got_object_commit_get_committer(commit);
7382 			tagger_time =
7383 			    got_object_commit_get_committer_time(commit);
7384 			err = got_object_id_str(&id_str, id);
7385 			free(id);
7386 			if (err)
7387 				break;
7388 		} else {
7389 			free(id);
7390 			tagger = got_object_tag_get_tagger(tag);
7391 			tagger_time = got_object_tag_get_tagger_time(tag);
7392 			err = got_object_id_str(&id_str,
7393 			    got_object_tag_get_object_id(tag));
7394 			if (err)
7395 				break;
7396 		}
7397 
7398 		if (tag && verify_tags) {
7399 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
7400 			    got_object_tag_get_message(tag));
7401 			if (ssh_sig && allowed_signers == NULL) {
7402 				err = got_error_msg(
7403 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
7404 				    "SSH signature verification requires "
7405 				        "setting allowed_signers in "
7406 				        "got.conf(5)");
7407 				break;
7408 			}
7409 		}
7410 
7411 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
7412 		free(refstr);
7413 		printf("from: %s\n", tagger);
7414 		datestr = get_datestr(&tagger_time, datebuf);
7415 		if (datestr)
7416 			printf("date: %s UTC\n", datestr);
7417 		if (commit)
7418 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
7419 		else {
7420 			switch (got_object_tag_get_object_type(tag)) {
7421 			case GOT_OBJ_TYPE_BLOB:
7422 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
7423 				    id_str);
7424 				break;
7425 			case GOT_OBJ_TYPE_TREE:
7426 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
7427 				    id_str);
7428 				break;
7429 			case GOT_OBJ_TYPE_COMMIT:
7430 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
7431 				    id_str);
7432 				break;
7433 			case GOT_OBJ_TYPE_TAG:
7434 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
7435 				    id_str);
7436 				break;
7437 			default:
7438 				break;
7439 			}
7440 		}
7441 		free(id_str);
7442 
7443 		if (ssh_sig) {
7444 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
7445 				allowed_signers, revoked_signers, verbosity);
7446 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
7447 				bad_sigs = 1;
7448 			else if (err)
7449 				break;
7450 			printf("signature: %s", sig_msg);
7451 			free(sig_msg);
7452 			sig_msg = NULL;
7453 		}
7454 
7455 		if (commit) {
7456 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
7457 			if (err)
7458 				break;
7459 			got_object_commit_close(commit);
7460 		} else {
7461 			tagmsg0 = strdup(got_object_tag_get_message(tag));
7462 			got_object_tag_close(tag);
7463 			if (tagmsg0 == NULL) {
7464 				err = got_error_from_errno("strdup");
7465 				break;
7466 			}
7467 		}
7468 
7469 		tagmsg = tagmsg0;
7470 		do {
7471 			line = strsep(&tagmsg, "\n");
7472 			if (line)
7473 				printf(" %s\n", line);
7474 		} while (line);
7475 		free(tagmsg0);
7476 	}
7477 done:
7478 	got_ref_list_free(&refs);
7479 	free(wanted_refname);
7480 
7481 	if (err == NULL && bad_sigs)
7482 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
7483 	return err;
7484 }
7485 
7486 static const struct got_error *
7487 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
7488     const char *tag_name, const char *repo_path)
7489 {
7490 	const struct got_error *err = NULL;
7491 	char *template = NULL, *initial_content = NULL;
7492 	char *editor = NULL;
7493 	int initial_content_len;
7494 	int fd = -1;
7495 
7496 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
7497 		err = got_error_from_errno("asprintf");
7498 		goto done;
7499 	}
7500 
7501 	initial_content_len = asprintf(&initial_content,
7502 	    "\n# tagging commit %s as %s\n",
7503 	    commit_id_str, tag_name);
7504 	if (initial_content_len == -1) {
7505 		err = got_error_from_errno("asprintf");
7506 		goto done;
7507 	}
7508 
7509 	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
7510 	if (err)
7511 		goto done;
7512 
7513 	if (write(fd, initial_content, initial_content_len) == -1) {
7514 		err = got_error_from_errno2("write", *tagmsg_path);
7515 		goto done;
7516 	}
7517 	if (close(fd) == -1) {
7518 		err = got_error_from_errno2("close", *tagmsg_path);
7519 		goto done;
7520 	}
7521 	fd = -1;
7522 
7523 	err = get_editor(&editor);
7524 	if (err)
7525 		goto done;
7526 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
7527 	    initial_content_len, 1);
7528 done:
7529 	free(initial_content);
7530 	free(template);
7531 	free(editor);
7532 
7533 	if (fd != -1 && close(fd) == -1 && err == NULL)
7534 		err = got_error_from_errno2("close", *tagmsg_path);
7535 
7536 	if (err) {
7537 		free(*tagmsg);
7538 		*tagmsg = NULL;
7539 	}
7540 	return err;
7541 }
7542 
7543 static const struct got_error *
7544 add_tag(struct got_repository *repo, const char *tagger,
7545     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
7546     const char *signer_id, int verbosity)
7547 {
7548 	const struct got_error *err = NULL;
7549 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
7550 	char *label = NULL, *commit_id_str = NULL;
7551 	struct got_reference *ref = NULL;
7552 	char *refname = NULL, *tagmsg = NULL;
7553 	char *tagmsg_path = NULL, *tag_id_str = NULL;
7554 	int preserve_tagmsg = 0;
7555 	struct got_reflist_head refs;
7556 
7557 	TAILQ_INIT(&refs);
7558 
7559 	/*
7560 	 * Don't let the user create a tag name with a leading '-'.
7561 	 * While technically a valid reference name, this case is usually
7562 	 * an unintended typo.
7563 	 */
7564 	if (tag_name[0] == '-')
7565 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
7566 
7567 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
7568 	if (err)
7569 		goto done;
7570 
7571 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
7572 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
7573 	if (err)
7574 		goto done;
7575 
7576 	err = got_object_id_str(&commit_id_str, commit_id);
7577 	if (err)
7578 		goto done;
7579 
7580 	err = get_tag_refname(&refname, tag_name);
7581 	if (err)
7582 		goto done;
7583 	if (strncmp("refs/tags/", tag_name, 10) == 0)
7584 		tag_name += 10;
7585 
7586 	err = got_ref_open(&ref, repo, refname, 0);
7587 	if (err == NULL) {
7588 		err = got_error(GOT_ERR_TAG_EXISTS);
7589 		goto done;
7590 	} else if (err->code != GOT_ERR_NOT_REF)
7591 		goto done;
7592 
7593 	if (tagmsg_arg == NULL) {
7594 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
7595 		    tag_name, got_repo_get_path(repo));
7596 		if (err) {
7597 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7598 			    tagmsg_path != NULL)
7599 				preserve_tagmsg = 1;
7600 			goto done;
7601 		}
7602 		/* Editor is done; we can now apply unveil(2) */
7603 		err = got_sigs_apply_unveil();
7604 		if (err)
7605 			goto done;
7606 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
7607 		if (err)
7608 			goto done;
7609 	}
7610 
7611 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
7612 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
7613 	    verbosity);
7614 	if (err) {
7615 		if (tagmsg_path)
7616 			preserve_tagmsg = 1;
7617 		goto done;
7618 	}
7619 
7620 	err = got_ref_alloc(&ref, refname, tag_id);
7621 	if (err) {
7622 		if (tagmsg_path)
7623 			preserve_tagmsg = 1;
7624 		goto done;
7625 	}
7626 
7627 	err = got_ref_write(ref, repo);
7628 	if (err) {
7629 		if (tagmsg_path)
7630 			preserve_tagmsg = 1;
7631 		goto done;
7632 	}
7633 
7634 	err = got_object_id_str(&tag_id_str, tag_id);
7635 	if (err) {
7636 		if (tagmsg_path)
7637 			preserve_tagmsg = 1;
7638 		goto done;
7639 	}
7640 	printf("Created tag %s\n", tag_id_str);
7641 done:
7642 	if (preserve_tagmsg) {
7643 		fprintf(stderr, "%s: tag message preserved in %s\n",
7644 		    getprogname(), tagmsg_path);
7645 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
7646 		err = got_error_from_errno2("unlink", tagmsg_path);
7647 	free(tag_id_str);
7648 	if (ref)
7649 		got_ref_close(ref);
7650 	free(commit_id);
7651 	free(commit_id_str);
7652 	free(refname);
7653 	free(tagmsg);
7654 	free(tagmsg_path);
7655 	got_ref_list_free(&refs);
7656 	return err;
7657 }
7658 
7659 static const struct got_error *
7660 cmd_tag(int argc, char *argv[])
7661 {
7662 	const struct got_error *error = NULL;
7663 	struct got_repository *repo = NULL;
7664 	struct got_worktree *worktree = NULL;
7665 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
7666 	char *gitconfig_path = NULL, *tagger = NULL, *keyword_idstr = NULL;
7667 	char *allowed_signers = NULL, *revoked_signers = NULL;
7668 	const char *signer_id = NULL;
7669 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
7670 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
7671 	int *pack_fds = NULL;
7672 
7673 #ifndef PROFILE
7674 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7675 	    "sendfd unveil", NULL) == -1)
7676 		err(1, "pledge");
7677 #endif
7678 
7679 	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
7680 		switch (ch) {
7681 		case 'c':
7682 			commit_id_arg = optarg;
7683 			break;
7684 		case 'l':
7685 			do_list = 1;
7686 			break;
7687 		case 'm':
7688 			tagmsg = optarg;
7689 			break;
7690 		case 'r':
7691 			repo_path = realpath(optarg, NULL);
7692 			if (repo_path == NULL) {
7693 				error = got_error_from_errno2("realpath",
7694 				    optarg);
7695 				goto done;
7696 			}
7697 			got_path_strip_trailing_slashes(repo_path);
7698 			break;
7699 		case 's':
7700 			signer_id = optarg;
7701 			break;
7702 		case 'V':
7703 			verify_tags = 1;
7704 			break;
7705 		case 'v':
7706 			if (verbosity < 0)
7707 				verbosity = 0;
7708 			else if (verbosity < 3)
7709 				verbosity++;
7710 			break;
7711 		default:
7712 			usage_tag();
7713 			/* NOTREACHED */
7714 		}
7715 	}
7716 
7717 	argc -= optind;
7718 	argv += optind;
7719 
7720 	if (do_list || verify_tags) {
7721 		if (commit_id_arg != NULL)
7722 			errx(1,
7723 			    "-c option can only be used when creating a tag");
7724 		if (tagmsg) {
7725 			if (do_list)
7726 				option_conflict('l', 'm');
7727 			else
7728 				option_conflict('V', 'm');
7729 		}
7730 		if (signer_id) {
7731 			if (do_list)
7732 				option_conflict('l', 's');
7733 			else
7734 				option_conflict('V', 's');
7735 		}
7736 		if (argc > 1)
7737 			usage_tag();
7738 	} else if (argc != 1)
7739 		usage_tag();
7740 
7741 	if (argc == 1)
7742 		tag_name = argv[0];
7743 
7744 	cwd = getcwd(NULL, 0);
7745 	if (cwd == NULL) {
7746 		error = got_error_from_errno("getcwd");
7747 		goto done;
7748 	}
7749 
7750 	error = got_repo_pack_fds_open(&pack_fds);
7751 	if (error != NULL)
7752 		goto done;
7753 
7754 	if (repo_path == NULL) {
7755 		error = got_worktree_open(&worktree, cwd,
7756 		    GOT_WORKTREE_GOT_DIR);
7757 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7758 			goto done;
7759 		else
7760 			error = NULL;
7761 		if (worktree) {
7762 			repo_path =
7763 			    strdup(got_worktree_get_repo_path(worktree));
7764 			if (repo_path == NULL)
7765 				error = got_error_from_errno("strdup");
7766 			if (error)
7767 				goto done;
7768 		} else {
7769 			repo_path = strdup(cwd);
7770 			if (repo_path == NULL) {
7771 				error = got_error_from_errno("strdup");
7772 				goto done;
7773 			}
7774 		}
7775 	}
7776 
7777 	if (do_list || verify_tags) {
7778 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7779 		if (error != NULL)
7780 			goto done;
7781 		error = get_allowed_signers(&allowed_signers, repo, worktree);
7782 		if (error)
7783 			goto done;
7784 		error = get_revoked_signers(&revoked_signers, repo, worktree);
7785 		if (error)
7786 			goto done;
7787 		if (worktree) {
7788 			/* Release work tree lock. */
7789 			got_worktree_close(worktree);
7790 			worktree = NULL;
7791 		}
7792 
7793 		/*
7794 		 * Remove "cpath" promise unless needed for signature tmpfile
7795 		 * creation.
7796 		 */
7797 		if (verify_tags)
7798 		 	got_sigs_apply_unveil();
7799 		else {
7800 #ifndef PROFILE
7801 			if (pledge("stdio rpath wpath flock proc exec sendfd "
7802 			    "unveil", NULL) == -1)
7803 				err(1, "pledge");
7804 #endif
7805 		}
7806 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
7807 		if (error)
7808 			goto done;
7809 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
7810 		    revoked_signers, verbosity);
7811 	} else {
7812 		error = get_gitconfig_path(&gitconfig_path);
7813 		if (error)
7814 			goto done;
7815 		error = got_repo_open(&repo, repo_path, gitconfig_path,
7816 		    pack_fds);
7817 		if (error != NULL)
7818 			goto done;
7819 
7820 		error = get_author(&tagger, repo, worktree);
7821 		if (error)
7822 			goto done;
7823 		if (signer_id == NULL)
7824 			signer_id = get_signer_id(repo, worktree);
7825 
7826 		if (tagmsg) {
7827 			if (signer_id) {
7828 				error = got_sigs_apply_unveil();
7829 				if (error)
7830 					goto done;
7831 			}
7832 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7833 			if (error)
7834 				goto done;
7835 		}
7836 
7837 		if (commit_id_arg == NULL) {
7838 			struct got_reference *head_ref;
7839 			struct got_object_id *commit_id;
7840 			error = got_ref_open(&head_ref, repo,
7841 			    worktree ? got_worktree_get_head_ref_name(worktree)
7842 			    : GOT_REF_HEAD, 0);
7843 			if (error)
7844 				goto done;
7845 			error = got_ref_resolve(&commit_id, repo, head_ref);
7846 			got_ref_close(head_ref);
7847 			if (error)
7848 				goto done;
7849 			error = got_object_id_str(&commit_id_str, commit_id);
7850 			free(commit_id);
7851 			if (error)
7852 				goto done;
7853 		} else {
7854 			error = got_keyword_to_idstr(&keyword_idstr,
7855 			    commit_id_arg, repo, worktree);
7856 			if (error != NULL)
7857 				goto done;
7858 			commit_id_str = keyword_idstr;
7859 		}
7860 
7861 		if (worktree) {
7862 			/* Release work tree lock. */
7863 			got_worktree_close(worktree);
7864 			worktree = NULL;
7865 		}
7866 
7867 		error = add_tag(repo, tagger, tag_name,
7868 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
7869 		    signer_id, verbosity);
7870 	}
7871 done:
7872 	if (repo) {
7873 		const struct got_error *close_err = got_repo_close(repo);
7874 		if (error == NULL)
7875 			error = close_err;
7876 	}
7877 	if (worktree)
7878 		got_worktree_close(worktree);
7879 	if (pack_fds) {
7880 		const struct got_error *pack_err =
7881 		    got_repo_pack_fds_close(pack_fds);
7882 		if (error == NULL)
7883 			error = pack_err;
7884 	}
7885 	free(cwd);
7886 	free(repo_path);
7887 	free(gitconfig_path);
7888 	free(commit_id_str);
7889 	free(tagger);
7890 	free(allowed_signers);
7891 	free(revoked_signers);
7892 	return error;
7893 }
7894 
7895 __dead static void
7896 usage_add(void)
7897 {
7898 	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
7899 	exit(1);
7900 }
7901 
7902 static const struct got_error *
7903 add_progress(void *arg, unsigned char status, const char *path)
7904 {
7905 	while (path[0] == '/')
7906 		path++;
7907 	printf("%c  %s\n", status, path);
7908 	return NULL;
7909 }
7910 
7911 static const struct got_error *
7912 cmd_add(int argc, char *argv[])
7913 {
7914 	const struct got_error *error = NULL;
7915 	struct got_repository *repo = NULL;
7916 	struct got_worktree *worktree = NULL;
7917 	char *cwd = NULL;
7918 	struct got_pathlist_head paths;
7919 	struct got_pathlist_entry *pe;
7920 	int ch, can_recurse = 0, no_ignores = 0;
7921 	int *pack_fds = NULL;
7922 
7923 	TAILQ_INIT(&paths);
7924 
7925 #ifndef PROFILE
7926 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7927 	    NULL) == -1)
7928 		err(1, "pledge");
7929 #endif
7930 
7931 	while ((ch = getopt(argc, argv, "IR")) != -1) {
7932 		switch (ch) {
7933 		case 'I':
7934 			no_ignores = 1;
7935 			break;
7936 		case 'R':
7937 			can_recurse = 1;
7938 			break;
7939 		default:
7940 			usage_add();
7941 			/* NOTREACHED */
7942 		}
7943 	}
7944 
7945 	argc -= optind;
7946 	argv += optind;
7947 
7948 	if (argc < 1)
7949 		usage_add();
7950 
7951 	cwd = getcwd(NULL, 0);
7952 	if (cwd == NULL) {
7953 		error = got_error_from_errno("getcwd");
7954 		goto done;
7955 	}
7956 
7957 	error = got_repo_pack_fds_open(&pack_fds);
7958 	if (error != NULL)
7959 		goto done;
7960 
7961 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
7962 	if (error) {
7963 		if (error->code == GOT_ERR_NOT_WORKTREE)
7964 			error = wrap_not_worktree_error(error, "add", cwd);
7965 		goto done;
7966 	}
7967 
7968 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7969 	    NULL, pack_fds);
7970 	if (error != NULL)
7971 		goto done;
7972 
7973 	error = apply_unveil(got_repo_get_path(repo), 1,
7974 	    got_worktree_get_root_path(worktree));
7975 	if (error)
7976 		goto done;
7977 
7978 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7979 	if (error)
7980 		goto done;
7981 
7982 	if (!can_recurse) {
7983 		char *ondisk_path;
7984 		struct stat sb;
7985 		TAILQ_FOREACH(pe, &paths, entry) {
7986 			if (asprintf(&ondisk_path, "%s/%s",
7987 			    got_worktree_get_root_path(worktree),
7988 			    pe->path) == -1) {
7989 				error = got_error_from_errno("asprintf");
7990 				goto done;
7991 			}
7992 			if (lstat(ondisk_path, &sb) == -1) {
7993 				if (errno == ENOENT) {
7994 					free(ondisk_path);
7995 					continue;
7996 				}
7997 				error = got_error_from_errno2("lstat",
7998 				    ondisk_path);
7999 				free(ondisk_path);
8000 				goto done;
8001 			}
8002 			free(ondisk_path);
8003 			if (S_ISDIR(sb.st_mode)) {
8004 				error = got_error_msg(GOT_ERR_BAD_PATH,
8005 				    "adding directories requires -R option");
8006 				goto done;
8007 			}
8008 		}
8009 	}
8010 
8011 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
8012 	    NULL, repo, no_ignores);
8013 done:
8014 	if (repo) {
8015 		const struct got_error *close_err = got_repo_close(repo);
8016 		if (error == NULL)
8017 			error = close_err;
8018 	}
8019 	if (worktree)
8020 		got_worktree_close(worktree);
8021 	if (pack_fds) {
8022 		const struct got_error *pack_err =
8023 		    got_repo_pack_fds_close(pack_fds);
8024 		if (error == NULL)
8025 			error = pack_err;
8026 	}
8027 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8028 	free(cwd);
8029 	return error;
8030 }
8031 
8032 __dead static void
8033 usage_remove(void)
8034 {
8035 	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
8036 	    getprogname());
8037 	exit(1);
8038 }
8039 
8040 static const struct got_error *
8041 print_remove_status(void *arg, unsigned char status,
8042     unsigned char staged_status, const char *path)
8043 {
8044 	while (path[0] == '/')
8045 		path++;
8046 	if (status == GOT_STATUS_NONEXISTENT)
8047 		return NULL;
8048 	if (status == staged_status && (status == GOT_STATUS_DELETE))
8049 		status = GOT_STATUS_NO_CHANGE;
8050 	printf("%c%c %s\n", status, staged_status, path);
8051 	return NULL;
8052 }
8053 
8054 static const struct got_error *
8055 cmd_remove(int argc, char *argv[])
8056 {
8057 	const struct got_error *error = NULL;
8058 	struct got_worktree *worktree = NULL;
8059 	struct got_repository *repo = NULL;
8060 	const char *status_codes = NULL;
8061 	char *cwd = NULL;
8062 	struct got_pathlist_head paths;
8063 	struct got_pathlist_entry *pe;
8064 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
8065 	int ignore_missing_paths = 0;
8066 	int *pack_fds = NULL;
8067 
8068 	TAILQ_INIT(&paths);
8069 
8070 #ifndef PROFILE
8071 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
8072 	    NULL) == -1)
8073 		err(1, "pledge");
8074 #endif
8075 
8076 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
8077 		switch (ch) {
8078 		case 'f':
8079 			delete_local_mods = 1;
8080 			ignore_missing_paths = 1;
8081 			break;
8082 		case 'k':
8083 			keep_on_disk = 1;
8084 			break;
8085 		case 'R':
8086 			can_recurse = 1;
8087 			break;
8088 		case 's':
8089 			for (i = 0; optarg[i] != '\0'; i++) {
8090 				switch (optarg[i]) {
8091 				case GOT_STATUS_MODIFY:
8092 					delete_local_mods = 1;
8093 					break;
8094 				case GOT_STATUS_MISSING:
8095 					ignore_missing_paths = 1;
8096 					break;
8097 				default:
8098 					errx(1, "invalid status code '%c'",
8099 					    optarg[i]);
8100 				}
8101 			}
8102 			status_codes = optarg;
8103 			break;
8104 		default:
8105 			usage_remove();
8106 			/* NOTREACHED */
8107 		}
8108 	}
8109 
8110 	argc -= optind;
8111 	argv += optind;
8112 
8113 	if (argc < 1)
8114 		usage_remove();
8115 
8116 	cwd = getcwd(NULL, 0);
8117 	if (cwd == NULL) {
8118 		error = got_error_from_errno("getcwd");
8119 		goto done;
8120 	}
8121 
8122 	error = got_repo_pack_fds_open(&pack_fds);
8123 	if (error != NULL)
8124 		goto done;
8125 
8126 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
8127 	if (error) {
8128 		if (error->code == GOT_ERR_NOT_WORKTREE)
8129 			error = wrap_not_worktree_error(error, "remove", cwd);
8130 		goto done;
8131 	}
8132 
8133 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8134 	    NULL, pack_fds);
8135 	if (error)
8136 		goto done;
8137 
8138 	error = apply_unveil(got_repo_get_path(repo), 1,
8139 	    got_worktree_get_root_path(worktree));
8140 	if (error)
8141 		goto done;
8142 
8143 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8144 	if (error)
8145 		goto done;
8146 
8147 	if (!can_recurse) {
8148 		char *ondisk_path;
8149 		struct stat sb;
8150 		TAILQ_FOREACH(pe, &paths, entry) {
8151 			if (asprintf(&ondisk_path, "%s/%s",
8152 			    got_worktree_get_root_path(worktree),
8153 			    pe->path) == -1) {
8154 				error = got_error_from_errno("asprintf");
8155 				goto done;
8156 			}
8157 			if (lstat(ondisk_path, &sb) == -1) {
8158 				if (errno == ENOENT) {
8159 					free(ondisk_path);
8160 					continue;
8161 				}
8162 				error = got_error_from_errno2("lstat",
8163 				    ondisk_path);
8164 				free(ondisk_path);
8165 				goto done;
8166 			}
8167 			free(ondisk_path);
8168 			if (S_ISDIR(sb.st_mode)) {
8169 				error = got_error_msg(GOT_ERR_BAD_PATH,
8170 				    "removing directories requires -R option");
8171 				goto done;
8172 			}
8173 		}
8174 	}
8175 
8176 	error = got_worktree_schedule_delete(worktree, &paths,
8177 	    delete_local_mods, status_codes, print_remove_status, NULL,
8178 	    repo, keep_on_disk, ignore_missing_paths);
8179 done:
8180 	if (repo) {
8181 		const struct got_error *close_err = got_repo_close(repo);
8182 		if (error == NULL)
8183 			error = close_err;
8184 	}
8185 	if (worktree)
8186 		got_worktree_close(worktree);
8187 	if (pack_fds) {
8188 		const struct got_error *pack_err =
8189 		    got_repo_pack_fds_close(pack_fds);
8190 		if (error == NULL)
8191 			error = pack_err;
8192 	}
8193 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8194 	free(cwd);
8195 	return error;
8196 }
8197 
8198 __dead static void
8199 usage_patch(void)
8200 {
8201 	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
8202 	    "[patchfile]\n", getprogname());
8203 	exit(1);
8204 }
8205 
8206 static const struct got_error *
8207 patch_from_stdin(int *patchfd)
8208 {
8209 	const struct got_error *err = NULL;
8210 	ssize_t r;
8211 	char buf[BUFSIZ];
8212 	sig_t sighup, sigint, sigquit;
8213 
8214 	*patchfd = got_opentempfd();
8215 	if (*patchfd == -1)
8216 		return got_error_from_errno("got_opentempfd");
8217 
8218 	sighup = signal(SIGHUP, SIG_DFL);
8219 	sigint = signal(SIGINT, SIG_DFL);
8220 	sigquit = signal(SIGQUIT, SIG_DFL);
8221 
8222 	for (;;) {
8223 		r = read(0, buf, sizeof(buf));
8224 		if (r == -1) {
8225 			err = got_error_from_errno("read");
8226 			break;
8227 		}
8228 		if (r == 0)
8229 			break;
8230 		if (write(*patchfd, buf, r) == -1) {
8231 			err = got_error_from_errno("write");
8232 			break;
8233 		}
8234 	}
8235 
8236 	signal(SIGHUP, sighup);
8237 	signal(SIGINT, sigint);
8238 	signal(SIGQUIT, sigquit);
8239 
8240 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
8241 		err = got_error_from_errno("lseek");
8242 
8243 	if (err != NULL) {
8244 		close(*patchfd);
8245 		*patchfd = -1;
8246 	}
8247 
8248 	return err;
8249 }
8250 
8251 struct got_patch_progress_arg {
8252 	int did_something;
8253 	int conflicts;
8254 	int rejects;
8255 };
8256 
8257 static const struct got_error *
8258 patch_progress(void *arg, const char *old, const char *new,
8259     unsigned char status, const struct got_error *error, int old_from,
8260     int old_lines, int new_from, int new_lines, int offset,
8261     int ws_mangled, const struct got_error *hunk_err)
8262 {
8263 	const char *path = new == NULL ? old : new;
8264 	struct got_patch_progress_arg *a = arg;
8265 
8266 	while (*path == '/')
8267 		path++;
8268 
8269 	if (status != GOT_STATUS_NO_CHANGE &&
8270 	    status != 0 /* per-hunk progress */) {
8271 		printf("%c  %s\n", status, path);
8272 		a->did_something = 1;
8273 	}
8274 
8275 	if (hunk_err == NULL) {
8276 		if (status == GOT_STATUS_CANNOT_UPDATE)
8277 			a->rejects++;
8278 		else if (status == GOT_STATUS_CONFLICT)
8279 			a->conflicts++;
8280 	}
8281 
8282 	if (error != NULL)
8283 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
8284 
8285 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
8286 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
8287 		    old_lines, new_from, new_lines);
8288 		if (hunk_err != NULL)
8289 			printf("%s\n", hunk_err->msg);
8290 		else if (offset != 0)
8291 			printf("applied with offset %d\n", offset);
8292 		else
8293 			printf("hunk contains mangled whitespace\n");
8294 	}
8295 
8296 	return NULL;
8297 }
8298 
8299 static void
8300 print_patch_progress_stats(struct got_patch_progress_arg *ppa)
8301 {
8302 	if (!ppa->did_something)
8303 		return;
8304 
8305 	if (ppa->conflicts > 0)
8306 		printf("Files with merge conflicts: %d\n", ppa->conflicts);
8307 
8308 	if (ppa->rejects > 0) {
8309 		printf("Files where patch failed to apply: %d\n",
8310 		    ppa->rejects);
8311 	}
8312 }
8313 
8314 static const struct got_error *
8315 cmd_patch(int argc, char *argv[])
8316 {
8317 	const struct got_error *error = NULL, *close_error = NULL;
8318 	struct got_worktree *worktree = NULL;
8319 	struct got_repository *repo = NULL;
8320 	struct got_reflist_head refs;
8321 	struct got_object_id *commit_id = NULL;
8322 	const char *commit_id_str = NULL;
8323 	struct stat sb;
8324 	const char *errstr;
8325 	char *cwd = NULL, *keyword_idstr = NULL;
8326 	int ch, nop = 0, strip = -1, reverse = 0;
8327 	int patchfd;
8328 	int *pack_fds = NULL;
8329 	struct got_patch_progress_arg ppa;
8330 
8331 	TAILQ_INIT(&refs);
8332 
8333 #ifndef PROFILE
8334 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
8335 	    "unveil", NULL) == -1)
8336 		err(1, "pledge");
8337 #endif
8338 
8339 	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
8340 		switch (ch) {
8341 		case 'c':
8342 			commit_id_str = optarg;
8343 			break;
8344 		case 'n':
8345 			nop = 1;
8346 			break;
8347 		case 'p':
8348 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
8349 			if (errstr != NULL)
8350 				errx(1, "pathname strip count is %s: %s",
8351 				     errstr, optarg);
8352 			break;
8353 		case 'R':
8354 			reverse = 1;
8355 			break;
8356 		default:
8357 			usage_patch();
8358 			/* NOTREACHED */
8359 		}
8360 	}
8361 
8362 	argc -= optind;
8363 	argv += optind;
8364 
8365 	if (argc == 0) {
8366 		error = patch_from_stdin(&patchfd);
8367 		if (error)
8368 			return error;
8369 	} else if (argc == 1) {
8370 		patchfd = open(argv[0], O_RDONLY);
8371 		if (patchfd == -1) {
8372 			error = got_error_from_errno2("open", argv[0]);
8373 			return error;
8374 		}
8375 		if (fstat(patchfd, &sb) == -1) {
8376 			error = got_error_from_errno2("fstat", argv[0]);
8377 			goto done;
8378 		}
8379 		if (!S_ISREG(sb.st_mode)) {
8380 			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
8381 			goto done;
8382 		}
8383 	} else
8384 		usage_patch();
8385 
8386 	if ((cwd = getcwd(NULL, 0)) == NULL) {
8387 		error = got_error_from_errno("getcwd");
8388 		goto done;
8389 	}
8390 
8391 	error = got_repo_pack_fds_open(&pack_fds);
8392 	if (error != NULL)
8393 		goto done;
8394 
8395 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
8396 	if (error != NULL)
8397 		goto done;
8398 
8399 	const char *repo_path = got_worktree_get_repo_path(worktree);
8400 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8401 	if (error != NULL)
8402 		goto done;
8403 
8404 	error = apply_unveil(got_repo_get_path(repo), 0,
8405 	    got_worktree_get_root_path(worktree));
8406 	if (error != NULL)
8407 		goto done;
8408 
8409 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8410 	if (error)
8411 		goto done;
8412 
8413 	if (commit_id_str != NULL) {
8414 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
8415 		    repo, worktree);
8416 		if (error != NULL)
8417 			goto done;
8418 
8419 		error = got_repo_match_object_id(&commit_id, NULL,
8420 		    keyword_idstr != NULL ? keyword_idstr : commit_id_str,
8421 		    GOT_OBJ_TYPE_COMMIT, &refs, repo);
8422 		if (error)
8423 			goto done;
8424 	}
8425 
8426 	memset(&ppa, 0, sizeof(ppa));
8427 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
8428 	    commit_id, patch_progress, &ppa, check_cancelled, NULL);
8429 	print_patch_progress_stats(&ppa);
8430 done:
8431 	got_ref_list_free(&refs);
8432 	free(keyword_idstr);
8433 	free(commit_id);
8434 	if (repo) {
8435 		close_error = got_repo_close(repo);
8436 		if (error == NULL)
8437 			error = close_error;
8438 	}
8439 	if (worktree != NULL) {
8440 		close_error = got_worktree_close(worktree);
8441 		if (error == NULL)
8442 			error = close_error;
8443 	}
8444 	if (pack_fds) {
8445 		const struct got_error *pack_err =
8446 		    got_repo_pack_fds_close(pack_fds);
8447 		if (error == NULL)
8448 			error = pack_err;
8449 	}
8450 	free(cwd);
8451 	return error;
8452 }
8453 
8454 __dead static void
8455 usage_revert(void)
8456 {
8457 	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
8458 	    getprogname());
8459 	exit(1);
8460 }
8461 
8462 static const struct got_error *
8463 revert_progress(void *arg, unsigned char status, const char *path)
8464 {
8465 	if (status == GOT_STATUS_UNVERSIONED)
8466 		return NULL;
8467 
8468 	while (path[0] == '/')
8469 		path++;
8470 	printf("%c  %s\n", status, path);
8471 	return NULL;
8472 }
8473 
8474 struct choose_patch_arg {
8475 	FILE *patch_script_file;
8476 	const char *action;
8477 };
8478 
8479 static const struct got_error *
8480 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
8481     int nchanges, const char *action)
8482 {
8483 	const struct got_error *err;
8484 	char *line = NULL;
8485 	size_t linesize = 0;
8486 	ssize_t linelen;
8487 
8488 	switch (status) {
8489 	case GOT_STATUS_ADD:
8490 		printf("A  %s\n%s this addition? [y/n] ", path, action);
8491 		break;
8492 	case GOT_STATUS_DELETE:
8493 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
8494 		break;
8495 	case GOT_STATUS_MODIFY:
8496 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
8497 			return got_error_from_errno("fseek");
8498 		printf(GOT_COMMIT_SEP_STR);
8499 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
8500 			printf("%s", line);
8501 		if (linelen == -1 && ferror(patch_file)) {
8502 			err = got_error_from_errno("getline");
8503 			free(line);
8504 			return err;
8505 		}
8506 		free(line);
8507 		printf(GOT_COMMIT_SEP_STR);
8508 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
8509 		    path, n, nchanges, action);
8510 		break;
8511 	default:
8512 		return got_error_path(path, GOT_ERR_FILE_STATUS);
8513 	}
8514 
8515 	fflush(stdout);
8516 	return NULL;
8517 }
8518 
8519 static const struct got_error *
8520 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
8521     FILE *patch_file, int n, int nchanges)
8522 {
8523 	const struct got_error *err = NULL;
8524 	char *line = NULL;
8525 	size_t linesize = 0;
8526 	ssize_t linelen;
8527 	int resp = ' ';
8528 	struct choose_patch_arg *a = arg;
8529 
8530 	*choice = GOT_PATCH_CHOICE_NONE;
8531 
8532 	if (a->patch_script_file) {
8533 		char *nl;
8534 		err = show_change(status, path, patch_file, n, nchanges,
8535 		    a->action);
8536 		if (err)
8537 			return err;
8538 		linelen = getline(&line, &linesize, a->patch_script_file);
8539 		if (linelen == -1) {
8540 			if (ferror(a->patch_script_file))
8541 				return got_error_from_errno("getline");
8542 			return NULL;
8543 		}
8544 		nl = strchr(line, '\n');
8545 		if (nl)
8546 			*nl = '\0';
8547 		if (strcmp(line, "y") == 0) {
8548 			*choice = GOT_PATCH_CHOICE_YES;
8549 			printf("y\n");
8550 		} else if (strcmp(line, "n") == 0) {
8551 			*choice = GOT_PATCH_CHOICE_NO;
8552 			printf("n\n");
8553 		} else if (strcmp(line, "q") == 0 &&
8554 		    status == GOT_STATUS_MODIFY) {
8555 			*choice = GOT_PATCH_CHOICE_QUIT;
8556 			printf("q\n");
8557 		} else
8558 			printf("invalid response '%s'\n", line);
8559 		free(line);
8560 		return NULL;
8561 	}
8562 
8563 	while (resp != 'y' && resp != 'n' && resp != 'q') {
8564 		err = show_change(status, path, patch_file, n, nchanges,
8565 		    a->action);
8566 		if (err)
8567 			return err;
8568 		resp = getchar();
8569 		if (resp == '\n')
8570 			resp = getchar();
8571 		if (status == GOT_STATUS_MODIFY) {
8572 			if (resp != 'y' && resp != 'n' && resp != 'q') {
8573 				printf("invalid response '%c'\n", resp);
8574 				resp = ' ';
8575 			}
8576 		} else if (resp != 'y' && resp != 'n') {
8577 				printf("invalid response '%c'\n", resp);
8578 				resp = ' ';
8579 		}
8580 	}
8581 
8582 	if (resp == 'y')
8583 		*choice = GOT_PATCH_CHOICE_YES;
8584 	else if (resp == 'n')
8585 		*choice = GOT_PATCH_CHOICE_NO;
8586 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
8587 		*choice = GOT_PATCH_CHOICE_QUIT;
8588 
8589 	return NULL;
8590 }
8591 
8592 struct wt_commitable_path_arg {
8593 	struct got_pathlist_head	*commit_paths;
8594 	int				*has_changes;
8595 };
8596 
8597 /*
8598  * Shortcut work tree status callback to determine if the set of paths scanned
8599  * has at least one versioned path that is being modified and, if not NULL, is
8600  * in the arg->commit_paths list.  Set arg and return GOT_ERR_FILE_MODIFIED as
8601  * soon as a path is passed with a status that satisfies this criteria.
8602  */
8603 static const struct got_error *
8604 worktree_has_commitable_path(void *arg, unsigned char status,
8605     unsigned char staged_status, const char *path,
8606     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
8607     struct got_object_id *commit_id, int dirfd, const char *de_name)
8608 {
8609 	struct wt_commitable_path_arg *a = arg;
8610 
8611 	if (status == staged_status && (status == GOT_STATUS_DELETE))
8612 		status = GOT_STATUS_NO_CHANGE;
8613 
8614 	if (!(status == GOT_STATUS_NO_CHANGE ||
8615 	    status == GOT_STATUS_UNVERSIONED) ||
8616 	    staged_status != GOT_STATUS_NO_CHANGE) {
8617 		if (a->commit_paths != NULL) {
8618 			struct got_pathlist_entry *pe;
8619 
8620 			TAILQ_FOREACH(pe, a->commit_paths, entry) {
8621 				if (strncmp(path, pe->path,
8622 				    pe->path_len) == 0) {
8623 					*a->has_changes = 1;
8624 					break;
8625 				}
8626 			}
8627 		} else
8628 			*a->has_changes = 1;
8629 
8630 		if (*a->has_changes)
8631 			return got_error(GOT_ERR_FILE_MODIFIED);
8632 	}
8633 
8634 	return NULL;
8635 }
8636 
8637 /*
8638  * Check that the changeset of the commit identified by id is
8639  * comprised of at least one modified path that is being committed.
8640  */
8641 static const struct got_error *
8642 commit_path_changed_in_worktree(struct wt_commitable_path_arg *wcpa,
8643     struct got_object_id *id, struct got_worktree *worktree,
8644     struct got_repository *repo)
8645 {
8646 	const struct got_error		*err;
8647 	struct got_pathlist_head	 paths;
8648 	struct got_commit_object	*commit = NULL, *pcommit = NULL;
8649 	struct got_tree_object		*tree = NULL, *ptree = NULL;
8650 	struct got_object_qid		*pid;
8651 
8652 	TAILQ_INIT(&paths);
8653 
8654 	err = got_object_open_as_commit(&commit, repo, id);
8655 	if (err)
8656 		goto done;
8657 
8658 	err = got_object_open_as_tree(&tree, repo,
8659 	    got_object_commit_get_tree_id(commit));
8660 	if (err)
8661 		goto done;
8662 
8663 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8664 	if (pid != NULL) {
8665 		err = got_object_open_as_commit(&pcommit, repo, &pid->id);
8666 		if (err)
8667 			goto done;
8668 
8669 		err = got_object_open_as_tree(&ptree, repo,
8670 		    got_object_commit_get_tree_id(pcommit));
8671 		if (err)
8672 			goto done;
8673 	}
8674 
8675 	err = got_diff_tree(ptree, tree, NULL, NULL, -1, -1, "", "", repo,
8676 	    got_diff_tree_collect_changed_paths, &paths, 0);
8677 	if (err)
8678 		goto done;
8679 
8680 	err = got_worktree_status(worktree, &paths, repo, 0,
8681 	    worktree_has_commitable_path, wcpa, check_cancelled, NULL);
8682 	if (err && err->code == GOT_ERR_FILE_MODIFIED) {
8683 		/*
8684 		 * At least one changed path in the referenced commit is
8685 		 * modified in the work tree, that's all we need to know!
8686 		 */
8687 		err = NULL;
8688 	}
8689 
8690 done:
8691 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
8692 	if (commit)
8693 		got_object_commit_close(commit);
8694 	if (pcommit)
8695 		got_object_commit_close(pcommit);
8696 	if (tree)
8697 		got_object_tree_close(tree);
8698 	if (ptree)
8699 		got_object_tree_close(ptree);
8700 	return err;
8701 }
8702 
8703 /*
8704  * Remove any "logmsg" reference comprised entirely of paths that have
8705  * been reverted in this work tree. If any path in the logmsg ref changeset
8706  * remains in a changed state in the worktree, do not remove the reference.
8707  */
8708 static const struct got_error *
8709 rm_logmsg_ref(struct got_worktree *worktree, struct got_repository *repo)
8710 {
8711 	const struct got_error		*err;
8712 	struct got_reflist_head		 refs;
8713 	struct got_reflist_entry	*re;
8714 	struct got_commit_object	*commit = NULL;
8715 	struct got_object_id		*commit_id = NULL;
8716 	struct wt_commitable_path_arg	 wcpa;
8717 	char				*uuidstr = NULL;
8718 
8719 	TAILQ_INIT(&refs);
8720 
8721 	err = got_worktree_get_uuid(&uuidstr, worktree);
8722 	if (err)
8723 		goto done;
8724 
8725 	err = got_ref_list(&refs, repo, "refs/got/worktree",
8726 	    got_ref_cmp_by_name, repo);
8727 	if (err)
8728 		goto done;
8729 
8730 	TAILQ_FOREACH(re, &refs, entry) {
8731 		const char	*refname;
8732 		int		 has_changes = 0;
8733 
8734 		refname = got_ref_get_name(re->ref);
8735 
8736 		if (!strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8737 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN))
8738 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
8739 		else if (!strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
8740 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN))
8741 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
8742 		else
8743 			continue;
8744 
8745 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
8746 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
8747 		else
8748 			continue;
8749 
8750 		err = got_repo_match_object_id(&commit_id, NULL, refname,
8751 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8752 		if (err)
8753 			goto done;
8754 
8755 		err = got_object_open_as_commit(&commit, repo, commit_id);
8756 		if (err)
8757 			goto done;
8758 
8759 		wcpa.commit_paths = NULL;
8760 		wcpa.has_changes = &has_changes;
8761 
8762 		err = commit_path_changed_in_worktree(&wcpa, commit_id,
8763 		    worktree, repo);
8764 		if (err)
8765 			goto done;
8766 
8767 		if (!has_changes) {
8768 			err = got_ref_delete(re->ref, repo);
8769 			if (err)
8770 				goto done;
8771 		}
8772 
8773 		got_object_commit_close(commit);
8774 		commit = NULL;
8775 		free(commit_id);
8776 		commit_id = NULL;
8777 	}
8778 
8779 done:
8780 	free(uuidstr);
8781 	free(commit_id);
8782 	got_ref_list_free(&refs);
8783 	if (commit)
8784 		got_object_commit_close(commit);
8785 	return err;
8786 }
8787 
8788 static const struct got_error *
8789 cmd_revert(int argc, char *argv[])
8790 {
8791 	const struct got_error *error = NULL;
8792 	struct got_worktree *worktree = NULL;
8793 	struct got_repository *repo = NULL;
8794 	char *cwd = NULL, *path = NULL;
8795 	struct got_pathlist_head paths;
8796 	struct got_pathlist_entry *pe;
8797 	int ch, can_recurse = 0, pflag = 0;
8798 	FILE *patch_script_file = NULL;
8799 	const char *patch_script_path = NULL;
8800 	struct choose_patch_arg cpa;
8801 	int *pack_fds = NULL;
8802 
8803 	TAILQ_INIT(&paths);
8804 
8805 #ifndef PROFILE
8806 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8807 	    "unveil", NULL) == -1)
8808 		err(1, "pledge");
8809 #endif
8810 
8811 	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
8812 		switch (ch) {
8813 		case 'F':
8814 			patch_script_path = optarg;
8815 			break;
8816 		case 'p':
8817 			pflag = 1;
8818 			break;
8819 		case 'R':
8820 			can_recurse = 1;
8821 			break;
8822 		default:
8823 			usage_revert();
8824 			/* NOTREACHED */
8825 		}
8826 	}
8827 
8828 	argc -= optind;
8829 	argv += optind;
8830 
8831 	if (argc < 1)
8832 		usage_revert();
8833 	if (patch_script_path && !pflag)
8834 		errx(1, "-F option can only be used together with -p option");
8835 
8836 	cwd = getcwd(NULL, 0);
8837 	if (cwd == NULL) {
8838 		error = got_error_from_errno("getcwd");
8839 		goto done;
8840 	}
8841 
8842 	error = got_repo_pack_fds_open(&pack_fds);
8843 	if (error != NULL)
8844 		goto done;
8845 
8846 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
8847 	if (error) {
8848 		if (error->code == GOT_ERR_NOT_WORKTREE)
8849 			error = wrap_not_worktree_error(error, "revert", cwd);
8850 		goto done;
8851 	}
8852 
8853 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8854 	    NULL, pack_fds);
8855 	if (error != NULL)
8856 		goto done;
8857 
8858 	if (patch_script_path) {
8859 		patch_script_file = fopen(patch_script_path, "re");
8860 		if (patch_script_file == NULL) {
8861 			error = got_error_from_errno2("fopen",
8862 			    patch_script_path);
8863 			goto done;
8864 		}
8865 	}
8866 
8867 	/*
8868 	 * XXX "c" perm needed on repo dir to delete merge references.
8869 	 */
8870 	error = apply_unveil(got_repo_get_path(repo), 0,
8871 	    got_worktree_get_root_path(worktree));
8872 	if (error)
8873 		goto done;
8874 
8875 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8876 	if (error)
8877 		goto done;
8878 
8879 	if (!can_recurse) {
8880 		char *ondisk_path;
8881 		struct stat sb;
8882 		TAILQ_FOREACH(pe, &paths, entry) {
8883 			if (asprintf(&ondisk_path, "%s/%s",
8884 			    got_worktree_get_root_path(worktree),
8885 			    pe->path) == -1) {
8886 				error = got_error_from_errno("asprintf");
8887 				goto done;
8888 			}
8889 			if (lstat(ondisk_path, &sb) == -1) {
8890 				if (errno == ENOENT) {
8891 					free(ondisk_path);
8892 					continue;
8893 				}
8894 				error = got_error_from_errno2("lstat",
8895 				    ondisk_path);
8896 				free(ondisk_path);
8897 				goto done;
8898 			}
8899 			free(ondisk_path);
8900 			if (S_ISDIR(sb.st_mode)) {
8901 				error = got_error_msg(GOT_ERR_BAD_PATH,
8902 				    "reverting directories requires -R option");
8903 				goto done;
8904 			}
8905 		}
8906 	}
8907 
8908 	cpa.patch_script_file = patch_script_file;
8909 	cpa.action = "revert";
8910 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
8911 	    pflag ? choose_patch : NULL, &cpa, repo);
8912 
8913 	error = rm_logmsg_ref(worktree, repo);
8914 done:
8915 	if (patch_script_file && fclose(patch_script_file) == EOF &&
8916 	    error == NULL)
8917 		error = got_error_from_errno2("fclose", patch_script_path);
8918 	if (repo) {
8919 		const struct got_error *close_err = got_repo_close(repo);
8920 		if (error == NULL)
8921 			error = close_err;
8922 	}
8923 	if (worktree)
8924 		got_worktree_close(worktree);
8925 	if (pack_fds) {
8926 		const struct got_error *pack_err =
8927 		    got_repo_pack_fds_close(pack_fds);
8928 		if (error == NULL)
8929 			error = pack_err;
8930 	}
8931 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8932 	free(path);
8933 	free(cwd);
8934 	return error;
8935 }
8936 
8937 __dead static void
8938 usage_commit(void)
8939 {
8940 	fprintf(stderr, "usage: %s commit [-CNnS] [-A author] [-F path] "
8941 	    "[-m message] [path ...]\n", getprogname());
8942 	exit(1);
8943 }
8944 
8945 struct collect_commit_logmsg_arg {
8946 	const char *cmdline_log;
8947 	const char *prepared_log;
8948 	const char *merged_log;
8949 	int non_interactive;
8950 	const char *editor;
8951 	const char *worktree_path;
8952 	const char *branch_name;
8953 	const char *repo_path;
8954 	char *logmsg_path;
8955 
8956 };
8957 
8958 static const struct got_error *
8959 read_prepared_logmsg(char **logmsg, const char *path)
8960 {
8961 	const struct got_error *err = NULL;
8962 	FILE *f = NULL;
8963 	struct stat sb;
8964 	size_t r;
8965 
8966 	*logmsg = NULL;
8967 	memset(&sb, 0, sizeof(sb));
8968 
8969 	f = fopen(path, "re");
8970 	if (f == NULL)
8971 		return got_error_from_errno2("fopen", path);
8972 
8973 	if (fstat(fileno(f), &sb) == -1) {
8974 		err = got_error_from_errno2("fstat", path);
8975 		goto done;
8976 	}
8977 	if (sb.st_size == 0) {
8978 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
8979 		goto done;
8980 	}
8981 
8982 	*logmsg = malloc(sb.st_size + 1);
8983 	if (*logmsg == NULL) {
8984 		err = got_error_from_errno("malloc");
8985 		goto done;
8986 	}
8987 
8988 	r = fread(*logmsg, 1, sb.st_size, f);
8989 	if (r != sb.st_size) {
8990 		if (ferror(f))
8991 			err = got_error_from_errno2("fread", path);
8992 		else
8993 			err = got_error(GOT_ERR_IO);
8994 		goto done;
8995 	}
8996 	(*logmsg)[sb.st_size] = '\0';
8997 done:
8998 	if (fclose(f) == EOF && err == NULL)
8999 		err = got_error_from_errno2("fclose", path);
9000 	if (err) {
9001 		free(*logmsg);
9002 		*logmsg = NULL;
9003 	}
9004 	return err;
9005 }
9006 
9007 static const struct got_error *
9008 collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
9009     const char *diff_path, char **logmsg, void *arg)
9010 {
9011 	char *initial_content = NULL;
9012 	struct got_pathlist_entry *pe;
9013 	const struct got_error *err = NULL;
9014 	char *template = NULL;
9015 	char *prepared_msg = NULL, *merged_msg = NULL;
9016 	struct collect_commit_logmsg_arg *a = arg;
9017 	int initial_content_len;
9018 	int fd = -1;
9019 	size_t len;
9020 
9021 	/* if a message was specified on the command line, just use it */
9022 	if (a->cmdline_log != NULL && *a->cmdline_log != '\0') {
9023 		len = strlen(a->cmdline_log) + 1;
9024 		*logmsg = malloc(len + 1);
9025 		if (*logmsg == NULL)
9026 			return got_error_from_errno("malloc");
9027 		strlcpy(*logmsg, a->cmdline_log, len);
9028 		return NULL;
9029 	} else if (a->prepared_log != NULL && a->non_interactive)
9030 		return read_prepared_logmsg(logmsg, a->prepared_log);
9031 
9032 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
9033 		return got_error_from_errno("asprintf");
9034 
9035 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
9036 	if (err)
9037 		goto done;
9038 
9039 	if (a->prepared_log) {
9040 		err = read_prepared_logmsg(&prepared_msg, a->prepared_log);
9041 		if (err)
9042 			goto done;
9043 	} else if (a->merged_log) {
9044 		err = read_prepared_logmsg(&merged_msg, a->merged_log);
9045 		if (err)
9046 			goto done;
9047 	}
9048 
9049 	initial_content_len = asprintf(&initial_content,
9050 	    "%s%s\n# changes to be committed on branch %s:\n",
9051 	    prepared_msg ? prepared_msg : "",
9052 	    merged_msg ? merged_msg : "", a->branch_name);
9053 	if (initial_content_len == -1) {
9054 		err = got_error_from_errno("asprintf");
9055 		goto done;
9056 	}
9057 
9058 	if (write(fd, initial_content, initial_content_len) == -1) {
9059 		err = got_error_from_errno2("write", a->logmsg_path);
9060 		goto done;
9061 	}
9062 
9063 	TAILQ_FOREACH(pe, commitable_paths, entry) {
9064 		struct got_commitable *ct = pe->data;
9065 		dprintf(fd, "#  %c  %s\n",
9066 		    got_commitable_get_status(ct),
9067 		    got_commitable_get_path(ct));
9068 	}
9069 
9070 	if (diff_path) {
9071 		dprintf(fd, "# detailed changes can be viewed in %s\n",
9072 		    diff_path);
9073 	}
9074 
9075 	if (close(fd) == -1) {
9076 		err = got_error_from_errno2("close", a->logmsg_path);
9077 		goto done;
9078 	}
9079 	fd = -1;
9080 
9081 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
9082 	    initial_content_len, a->prepared_log ? 0 : 1);
9083 done:
9084 	free(initial_content);
9085 	free(template);
9086 	free(prepared_msg);
9087 	free(merged_msg);
9088 
9089 	if (fd != -1 && close(fd) == -1 && err == NULL)
9090 		err = got_error_from_errno2("close", a->logmsg_path);
9091 
9092 	/* Editor is done; we can now apply unveil(2) */
9093 	if (err == NULL)
9094 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
9095 	if (err) {
9096 		free(*logmsg);
9097 		*logmsg = NULL;
9098 	}
9099 	return err;
9100 }
9101 
9102 static const struct got_error *
9103 cat_logmsg(FILE *f, struct got_commit_object *commit, const char *idstr,
9104     const char *type, int has_content)
9105 {
9106 	const struct got_error	*err = NULL;
9107 	char			*logmsg = NULL;
9108 
9109 	err = got_object_commit_get_logmsg(&logmsg, commit);
9110 	if (err)
9111 		return err;
9112 
9113 	if (fprintf(f, "%s# log message of %s commit %s:%s",
9114 	    has_content ? "\n" : "", type, idstr, logmsg) < 0)
9115 		err = got_ferror(f, GOT_ERR_IO);
9116 
9117 	free(logmsg);
9118 	return err;
9119 }
9120 
9121 /*
9122  * Lookup "logmsg" references of backed-out and cherrypicked commits
9123  * belonging to the current work tree. If found, and the worktree has
9124  * at least one modified file that was changed in the referenced commit,
9125  * add its log message to a new temporary file at *logmsg_path.
9126  * Add all refs found to matched_refs to be scheduled for removal on
9127  * successful commit.
9128  */
9129 static const struct got_error *
9130 lookup_logmsg_ref(char **logmsg_path, struct got_pathlist_head *paths,
9131     struct got_reflist_head *matched_refs, struct got_worktree *worktree,
9132     struct got_repository *repo)
9133 {
9134 	const struct got_error		*err;
9135 	struct got_commit_object	*commit = NULL;
9136 	struct got_object_id		*id = NULL;
9137 	struct got_reflist_head		 refs;
9138 	struct got_reflist_entry	*re, *re_match;
9139 	FILE				*f = NULL;
9140 	char				*uuidstr = NULL;
9141 	int				 added_logmsg = 0;
9142 
9143 	TAILQ_INIT(&refs);
9144 
9145 	*logmsg_path = NULL;
9146 
9147 	err = got_worktree_get_uuid(&uuidstr, worktree);
9148 	if (err)
9149 		goto done;
9150 
9151 	err = got_ref_list(&refs, repo, "refs/got/worktree",
9152 	    got_ref_cmp_by_name, repo);
9153 	if (err)
9154 		goto done;
9155 
9156 	TAILQ_FOREACH(re, &refs, entry) {
9157 		const char			*refname, *type;
9158 		struct wt_commitable_path_arg	 wcpa;
9159 		int				 add_logmsg = 0;
9160 
9161 		refname = got_ref_get_name(re->ref);
9162 
9163 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
9164 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
9165 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
9166 			type = "cherrypicked";
9167 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
9168 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
9169 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
9170 			type = "backed-out";
9171 		} else
9172 			continue;
9173 
9174 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
9175 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
9176 		else
9177 			continue;
9178 
9179 		err = got_repo_match_object_id(&id, NULL, refname,
9180 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9181 		if (err)
9182 			goto done;
9183 
9184 		err = got_object_open_as_commit(&commit, repo, id);
9185 		if (err)
9186 			goto done;
9187 
9188 		wcpa.commit_paths = paths;
9189 		wcpa.has_changes = &add_logmsg;
9190 
9191 		err = commit_path_changed_in_worktree(&wcpa, id,
9192 		    worktree, repo);
9193 		if (err)
9194 			goto done;
9195 
9196 		if (add_logmsg) {
9197 			if (f == NULL) {
9198 				err = got_opentemp_named(logmsg_path, &f,
9199 				    "got-commit-logmsg", "");
9200 				if (err)
9201 					goto done;
9202 			}
9203 			err = cat_logmsg(f, commit, refname, type,
9204 			    added_logmsg);
9205 			if (err)
9206 				goto done;
9207 			if (!added_logmsg)
9208 				++added_logmsg;
9209 
9210 			err = got_reflist_entry_dup(&re_match, re);
9211 			if (err)
9212 				goto done;
9213 			TAILQ_INSERT_HEAD(matched_refs, re_match, entry);
9214 		}
9215 
9216 		got_object_commit_close(commit);
9217 		commit = NULL;
9218 		free(id);
9219 		id = NULL;
9220 	}
9221 
9222 done:
9223 	free(id);
9224 	free(uuidstr);
9225 	got_ref_list_free(&refs);
9226 	if (commit)
9227 		got_object_commit_close(commit);
9228 	if (f && fclose(f) == EOF && err == NULL)
9229 		err = got_error_from_errno("fclose");
9230 	if (!added_logmsg) {
9231 		if (*logmsg_path && unlink(*logmsg_path) != 0 && err == NULL)
9232 			err = got_error_from_errno2("unlink", *logmsg_path);
9233 		*logmsg_path = NULL;
9234 	}
9235 	return err;
9236 }
9237 
9238 static const struct got_error *
9239 cmd_commit(int argc, char *argv[])
9240 {
9241 	const struct got_error *error = NULL;
9242 	struct got_worktree *worktree = NULL;
9243 	struct got_repository *repo = NULL;
9244 	char *cwd = NULL, *id_str = NULL;
9245 	struct got_object_id *id = NULL;
9246 	const char *logmsg = NULL;
9247 	char *prepared_logmsg = NULL, *merged_logmsg = NULL;
9248 	struct collect_commit_logmsg_arg cl_arg;
9249 	const char *author = NULL;
9250 	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
9251 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
9252 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
9253 	int show_diff = 1, commit_conflicts = 0;
9254 	struct got_pathlist_head paths;
9255 	struct got_reflist_head refs;
9256 	struct got_reflist_entry *re;
9257 	int *pack_fds = NULL;
9258 
9259 	TAILQ_INIT(&refs);
9260 	TAILQ_INIT(&paths);
9261 	cl_arg.logmsg_path = NULL;
9262 
9263 #ifndef PROFILE
9264 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9265 	    "unveil", NULL) == -1)
9266 		err(1, "pledge");
9267 #endif
9268 
9269 	while ((ch = getopt(argc, argv, "A:CF:m:NnS")) != -1) {
9270 		switch (ch) {
9271 		case 'A':
9272 			author = optarg;
9273 			error = valid_author(author);
9274 			if (error)
9275 				return error;
9276 			break;
9277 		case 'C':
9278 			commit_conflicts = 1;
9279 			break;
9280 		case 'F':
9281 			if (logmsg != NULL)
9282 				option_conflict('F', 'm');
9283 			prepared_logmsg = realpath(optarg, NULL);
9284 			if (prepared_logmsg == NULL)
9285 				return got_error_from_errno2("realpath",
9286 				    optarg);
9287 			break;
9288 		case 'm':
9289 			if (prepared_logmsg)
9290 				option_conflict('m', 'F');
9291 			logmsg = optarg;
9292 			break;
9293 		case 'N':
9294 			non_interactive = 1;
9295 			break;
9296 		case 'n':
9297 			show_diff = 0;
9298 			break;
9299 		case 'S':
9300 			allow_bad_symlinks = 1;
9301 			break;
9302 		default:
9303 			usage_commit();
9304 			/* NOTREACHED */
9305 		}
9306 	}
9307 
9308 	argc -= optind;
9309 	argv += optind;
9310 
9311 	cwd = getcwd(NULL, 0);
9312 	if (cwd == NULL) {
9313 		error = got_error_from_errno("getcwd");
9314 		goto done;
9315 	}
9316 
9317 	error = got_repo_pack_fds_open(&pack_fds);
9318 	if (error != NULL)
9319 		goto done;
9320 
9321 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
9322 	if (error) {
9323 		if (error->code == GOT_ERR_NOT_WORKTREE)
9324 			error = wrap_not_worktree_error(error, "commit", cwd);
9325 		goto done;
9326 	}
9327 
9328 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
9329 	if (error)
9330 		goto done;
9331 	if (rebase_in_progress) {
9332 		error = got_error(GOT_ERR_REBASING);
9333 		goto done;
9334 	}
9335 
9336 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
9337 	    worktree);
9338 	if (error)
9339 		goto done;
9340 
9341 	error = get_gitconfig_path(&gitconfig_path);
9342 	if (error)
9343 		goto done;
9344 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9345 	    gitconfig_path, pack_fds);
9346 	if (error != NULL)
9347 		goto done;
9348 
9349 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
9350 	if (error)
9351 		goto done;
9352 	if (merge_in_progress) {
9353 		error = got_error(GOT_ERR_MERGE_BUSY);
9354 		goto done;
9355 	}
9356 
9357 	error = get_author(&committer, repo, worktree);
9358 	if (error)
9359 		goto done;
9360 
9361 	if (author == NULL)
9362 		author = committer;
9363 
9364 	/*
9365 	 * unveil(2) traverses exec(2); if an editor is used we have
9366 	 * to apply unveil after the log message has been written.
9367 	 */
9368 	if (logmsg == NULL || strlen(logmsg) == 0)
9369 		error = get_editor(&editor);
9370 	else
9371 		error = apply_unveil(got_repo_get_path(repo), 0,
9372 		    got_worktree_get_root_path(worktree));
9373 	if (error)
9374 		goto done;
9375 
9376 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
9377 	if (error)
9378 		goto done;
9379 
9380 	if (prepared_logmsg == NULL) {
9381 		error = lookup_logmsg_ref(&merged_logmsg,
9382 		    argc > 0 ? &paths : NULL, &refs, worktree, repo);
9383 		if (error)
9384 			goto done;
9385 	}
9386 
9387 	cl_arg.editor = editor;
9388 	cl_arg.cmdline_log = logmsg;
9389 	cl_arg.prepared_log = prepared_logmsg;
9390 	cl_arg.merged_log = merged_logmsg;
9391 	cl_arg.non_interactive = non_interactive;
9392 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
9393 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
9394 	if (!histedit_in_progress) {
9395 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
9396 			error = got_error(GOT_ERR_COMMIT_BRANCH);
9397 			goto done;
9398 		}
9399 		cl_arg.branch_name += 11;
9400 	}
9401 	cl_arg.repo_path = got_repo_get_path(repo);
9402 	error = got_worktree_commit(&id, worktree, &paths, author, committer,
9403 	    allow_bad_symlinks, show_diff, commit_conflicts,
9404 	    collect_commit_logmsg, &cl_arg, print_status, NULL, repo);
9405 	if (error) {
9406 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
9407 		    cl_arg.logmsg_path != NULL)
9408 			preserve_logmsg = 1;
9409 		goto done;
9410 	}
9411 
9412 	error = got_object_id_str(&id_str, id);
9413 	if (error)
9414 		goto done;
9415 	printf("Created commit %s\n", id_str);
9416 
9417 	TAILQ_FOREACH(re, &refs, entry) {
9418 		error = got_ref_delete(re->ref, repo);
9419 		if (error)
9420 			goto done;
9421 	}
9422 
9423 done:
9424 	if (preserve_logmsg) {
9425 		fprintf(stderr, "%s: log message preserved in %s\n",
9426 		    getprogname(), cl_arg.logmsg_path);
9427 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
9428 	    error == NULL)
9429 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
9430 	free(cl_arg.logmsg_path);
9431 	if (merged_logmsg && unlink(merged_logmsg) == -1 && error == NULL)
9432 		error = got_error_from_errno2("unlink", merged_logmsg);
9433 	free(merged_logmsg);
9434 	if (repo) {
9435 		const struct got_error *close_err = got_repo_close(repo);
9436 		if (error == NULL)
9437 			error = close_err;
9438 	}
9439 	if (worktree)
9440 		got_worktree_close(worktree);
9441 	if (pack_fds) {
9442 		const struct got_error *pack_err =
9443 		    got_repo_pack_fds_close(pack_fds);
9444 		if (error == NULL)
9445 			error = pack_err;
9446 	}
9447 	got_ref_list_free(&refs);
9448 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
9449 	free(cwd);
9450 	free(id_str);
9451 	free(gitconfig_path);
9452 	free(editor);
9453 	free(committer);
9454 	free(prepared_logmsg);
9455 	return error;
9456 }
9457 
9458 __dead static void
9459 usage_send(void)
9460 {
9461 	fprintf(stderr, "usage: %s send [-afqTv] [-b branch] [-d branch] "
9462 	    "[-r repository-path] [-t tag] [remote-repository]\n",
9463 	    getprogname());
9464 	exit(1);
9465 }
9466 
9467 static void
9468 print_load_info(int print_colored, int print_found, int print_trees,
9469     int ncolored, int nfound, int ntrees)
9470 {
9471 	if (print_colored) {
9472 		printf("%d commit%s colored", ncolored,
9473 		    ncolored == 1 ? "" : "s");
9474 	}
9475 	if (print_found) {
9476 		printf("%s%d object%s found",
9477 		    ncolored > 0 ? "; " : "",
9478 		    nfound, nfound == 1 ? "" : "s");
9479 	}
9480 	if (print_trees) {
9481 		printf("; %d tree%s scanned", ntrees,
9482 		    ntrees == 1 ? "" : "s");
9483 	}
9484 }
9485 
9486 struct got_send_progress_arg {
9487 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
9488 	int verbosity;
9489 	int last_ncolored;
9490 	int last_nfound;
9491 	int last_ntrees;
9492 	int loading_done;
9493 	int last_ncommits;
9494 	int last_nobj_total;
9495 	int last_p_deltify;
9496 	int last_p_written;
9497 	int last_p_sent;
9498 	int printed_something;
9499 	int sent_something;
9500 	struct got_pathlist_head *delete_branches;
9501 };
9502 
9503 static const struct got_error *
9504 send_progress(void *arg, int ncolored, int nfound, int ntrees,
9505     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
9506     int nobj_written, off_t bytes_sent, const char *refname,
9507     const char *errmsg, int success)
9508 {
9509 	struct got_send_progress_arg *a = arg;
9510 	char scaled_packsize[FMT_SCALED_STRSIZE];
9511 	char scaled_sent[FMT_SCALED_STRSIZE];
9512 	int p_deltify = 0, p_written = 0, p_sent = 0;
9513 	int print_colored = 0, print_found = 0, print_trees = 0;
9514 	int print_searching = 0, print_total = 0;
9515 	int print_deltify = 0, print_written = 0, print_sent = 0;
9516 
9517 	if (a->verbosity < 0)
9518 		return NULL;
9519 
9520 	if (refname) {
9521 		const char *status = success ? "accepted" : "rejected";
9522 
9523 		if (success) {
9524 			struct got_pathlist_entry *pe;
9525 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
9526 				const char *branchname = pe->path;
9527 				if (got_path_cmp(branchname, refname,
9528 				    strlen(branchname), strlen(refname)) == 0) {
9529 					status = "deleted";
9530 					a->sent_something = 1;
9531 					break;
9532 				}
9533 			}
9534 		}
9535 
9536 		if (a->printed_something)
9537 			putchar('\n');
9538 		printf("Server has %s %s", status, refname);
9539 		if (errmsg)
9540 			printf(": %s", errmsg);
9541 		a->printed_something = 1;
9542 		return NULL;
9543 	}
9544 
9545 	if (a->last_ncolored != ncolored) {
9546 		print_colored = 1;
9547 		a->last_ncolored = ncolored;
9548 	}
9549 
9550 	if (a->last_nfound != nfound) {
9551 		print_colored = 1;
9552 		print_found = 1;
9553 		a->last_nfound = nfound;
9554 	}
9555 
9556 	if (a->last_ntrees != ntrees) {
9557 		print_colored = 1;
9558 		print_found = 1;
9559 		print_trees = 1;
9560 		a->last_ntrees = ntrees;
9561 	}
9562 
9563 	if ((print_colored || print_found || print_trees) &&
9564 	    !a->loading_done) {
9565 		printf("\r");
9566 		print_load_info(print_colored, print_found, print_trees,
9567 		    ncolored, nfound, ntrees);
9568 		a->printed_something = 1;
9569 		fflush(stdout);
9570 		return NULL;
9571 	} else if (!a->loading_done) {
9572 		printf("\r");
9573 		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
9574 		printf("\n");
9575 		a->loading_done = 1;
9576 	}
9577 
9578 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
9579 		return got_error_from_errno("fmt_scaled");
9580 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
9581 		return got_error_from_errno("fmt_scaled");
9582 
9583 	if (a->last_ncommits != ncommits) {
9584 		print_searching = 1;
9585 		a->last_ncommits = ncommits;
9586 	}
9587 
9588 	if (a->last_nobj_total != nobj_total) {
9589 		print_searching = 1;
9590 		print_total = 1;
9591 		a->last_nobj_total = nobj_total;
9592 	}
9593 
9594 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
9595 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
9596 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
9597 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
9598 			return got_error(GOT_ERR_NO_SPACE);
9599 	}
9600 
9601 	if (nobj_deltify > 0 || nobj_written > 0) {
9602 		if (nobj_deltify > 0) {
9603 			p_deltify = (nobj_deltify * 100) / nobj_total;
9604 			if (p_deltify != a->last_p_deltify) {
9605 				a->last_p_deltify = p_deltify;
9606 				print_searching = 1;
9607 				print_total = 1;
9608 				print_deltify = 1;
9609 			}
9610 		}
9611 		if (nobj_written > 0) {
9612 			p_written = (nobj_written * 100) / nobj_total;
9613 			if (p_written != a->last_p_written) {
9614 				a->last_p_written = p_written;
9615 				print_searching = 1;
9616 				print_total = 1;
9617 				print_deltify = 1;
9618 				print_written = 1;
9619 			}
9620 		}
9621 	}
9622 
9623 	if (bytes_sent > 0) {
9624 		p_sent = (bytes_sent * 100) / packfile_size;
9625 		if (p_sent != a->last_p_sent) {
9626 			a->last_p_sent = p_sent;
9627 			print_searching = 1;
9628 			print_total = 1;
9629 			print_deltify = 1;
9630 			print_written = 1;
9631 			print_sent = 1;
9632 		}
9633 		a->sent_something = 1;
9634 	}
9635 
9636 	if (print_searching || print_total || print_deltify || print_written ||
9637 	    print_sent)
9638 		printf("\r");
9639 	if (print_searching)
9640 		printf("packing %d reference%s", ncommits,
9641 		    ncommits == 1 ? "" : "s");
9642 	if (print_total)
9643 		printf("; %d object%s", nobj_total,
9644 		    nobj_total == 1 ? "" : "s");
9645 	if (print_deltify)
9646 		printf("; deltify: %d%%", p_deltify);
9647 	if (print_sent)
9648 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9649 		    scaled_packsize, p_sent);
9650 	else if (print_written)
9651 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9652 		    scaled_packsize, p_written);
9653 	if (print_searching || print_total || print_deltify ||
9654 	    print_written || print_sent) {
9655 		a->printed_something = 1;
9656 		fflush(stdout);
9657 	}
9658 	return NULL;
9659 }
9660 
9661 static const struct got_error *
9662 cmd_send(int argc, char *argv[])
9663 {
9664 	const struct got_error *error = NULL;
9665 	char *cwd = NULL, *repo_path = NULL;
9666 	const char *remote_name;
9667 	char *proto = NULL, *host = NULL, *port = NULL;
9668 	char *repo_name = NULL, *server_path = NULL;
9669 	const struct got_remote_repo *remotes, *remote = NULL;
9670 	int nremotes, nbranches = 0, ndelete_branches = 0;
9671 	struct got_repository *repo = NULL;
9672 	struct got_worktree *worktree = NULL;
9673 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
9674 	struct got_pathlist_head branches;
9675 	struct got_pathlist_head tags;
9676 	struct got_reflist_head all_branches;
9677 	struct got_reflist_head all_tags;
9678 	struct got_pathlist_head delete_args;
9679 	struct got_pathlist_head delete_branches;
9680 	struct got_reflist_entry *re;
9681 	struct got_pathlist_entry *pe;
9682 	int i, ch, sendfd = -1, sendstatus;
9683 	pid_t sendpid = -1;
9684 	struct got_send_progress_arg spa;
9685 	int verbosity = 0, overwrite_refs = 0;
9686 	int send_all_branches = 0, send_all_tags = 0;
9687 	struct got_reference *ref = NULL;
9688 	int *pack_fds = NULL;
9689 
9690 	TAILQ_INIT(&branches);
9691 	TAILQ_INIT(&tags);
9692 	TAILQ_INIT(&all_branches);
9693 	TAILQ_INIT(&all_tags);
9694 	TAILQ_INIT(&delete_args);
9695 	TAILQ_INIT(&delete_branches);
9696 
9697 	while ((ch = getopt(argc, argv, "ab:d:fqr:Tt:v")) != -1) {
9698 		switch (ch) {
9699 		case 'a':
9700 			send_all_branches = 1;
9701 			break;
9702 		case 'b':
9703 			error = got_pathlist_append(&branches, optarg, NULL);
9704 			if (error)
9705 				return error;
9706 			nbranches++;
9707 			break;
9708 		case 'd':
9709 			error = got_pathlist_append(&delete_args, optarg, NULL);
9710 			if (error)
9711 				return error;
9712 			break;
9713 		case 'f':
9714 			overwrite_refs = 1;
9715 			break;
9716 		case 'q':
9717 			verbosity = -1;
9718 			break;
9719 		case 'r':
9720 			repo_path = realpath(optarg, NULL);
9721 			if (repo_path == NULL)
9722 				return got_error_from_errno2("realpath",
9723 				    optarg);
9724 			got_path_strip_trailing_slashes(repo_path);
9725 			break;
9726 		case 'T':
9727 			send_all_tags = 1;
9728 			break;
9729 		case 't':
9730 			error = got_pathlist_append(&tags, optarg, NULL);
9731 			if (error)
9732 				return error;
9733 			break;
9734 		case 'v':
9735 			if (verbosity < 0)
9736 				verbosity = 0;
9737 			else if (verbosity < 3)
9738 				verbosity++;
9739 			break;
9740 		default:
9741 			usage_send();
9742 			/* NOTREACHED */
9743 		}
9744 	}
9745 	argc -= optind;
9746 	argv += optind;
9747 
9748 	if (send_all_branches && !TAILQ_EMPTY(&branches))
9749 		option_conflict('a', 'b');
9750 	if (send_all_tags && !TAILQ_EMPTY(&tags))
9751 		option_conflict('T', 't');
9752 
9753 
9754 	if (argc == 0)
9755 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
9756 	else if (argc == 1)
9757 		remote_name = argv[0];
9758 	else
9759 		usage_send();
9760 
9761 	cwd = getcwd(NULL, 0);
9762 	if (cwd == NULL) {
9763 		error = got_error_from_errno("getcwd");
9764 		goto done;
9765 	}
9766 
9767 	error = got_repo_pack_fds_open(&pack_fds);
9768 	if (error != NULL)
9769 		goto done;
9770 
9771 	if (repo_path == NULL) {
9772 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
9773 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
9774 			goto done;
9775 		else
9776 			error = NULL;
9777 		if (worktree) {
9778 			repo_path =
9779 			    strdup(got_worktree_get_repo_path(worktree));
9780 			if (repo_path == NULL)
9781 				error = got_error_from_errno("strdup");
9782 			if (error)
9783 				goto done;
9784 		} else {
9785 			repo_path = strdup(cwd);
9786 			if (repo_path == NULL) {
9787 				error = got_error_from_errno("strdup");
9788 				goto done;
9789 			}
9790 		}
9791 	}
9792 
9793 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
9794 	if (error)
9795 		goto done;
9796 
9797 	if (worktree) {
9798 		worktree_conf = got_worktree_get_gotconfig(worktree);
9799 		if (worktree_conf) {
9800 			got_gotconfig_get_remotes(&nremotes, &remotes,
9801 			    worktree_conf);
9802 			for (i = 0; i < nremotes; i++) {
9803 				if (strcmp(remotes[i].name, remote_name) == 0) {
9804 					remote = &remotes[i];
9805 					break;
9806 				}
9807 			}
9808 		}
9809 	}
9810 	if (remote == NULL) {
9811 		repo_conf = got_repo_get_gotconfig(repo);
9812 		if (repo_conf) {
9813 			got_gotconfig_get_remotes(&nremotes, &remotes,
9814 			    repo_conf);
9815 			for (i = 0; i < nremotes; i++) {
9816 				if (strcmp(remotes[i].name, remote_name) == 0) {
9817 					remote = &remotes[i];
9818 					break;
9819 				}
9820 			}
9821 		}
9822 	}
9823 	if (remote == NULL) {
9824 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
9825 		for (i = 0; i < nremotes; i++) {
9826 			if (strcmp(remotes[i].name, remote_name) == 0) {
9827 				remote = &remotes[i];
9828 				break;
9829 			}
9830 		}
9831 	}
9832 	if (remote == NULL) {
9833 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
9834 		goto done;
9835 	}
9836 
9837 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
9838 	    &repo_name, remote->send_url);
9839 	if (error)
9840 		goto done;
9841 
9842 	if (strcmp(proto, "git") == 0) {
9843 #ifndef PROFILE
9844 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9845 		    "sendfd dns inet unveil", NULL) == -1)
9846 			err(1, "pledge");
9847 #endif
9848 	} else if (strcmp(proto, "git+ssh") == 0 ||
9849 	    strcmp(proto, "ssh") == 0) {
9850 #ifndef PROFILE
9851 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9852 		    "sendfd unveil", NULL) == -1)
9853 			err(1, "pledge");
9854 #endif
9855 	} else if (strcmp(proto, "http") == 0 ||
9856 	    strcmp(proto, "git+http") == 0) {
9857 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
9858 		goto done;
9859 	} else {
9860 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
9861 		goto done;
9862 	}
9863 
9864 	error = got_dial_apply_unveil(proto);
9865 	if (error)
9866 		goto done;
9867 
9868 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
9869 	if (error)
9870 		goto done;
9871 
9872 	if (send_all_branches) {
9873 		error = got_ref_list(&all_branches, repo, "refs/heads",
9874 		    got_ref_cmp_by_name, NULL);
9875 		if (error)
9876 			goto done;
9877 		TAILQ_FOREACH(re, &all_branches, entry) {
9878 			const char *branchname = got_ref_get_name(re->ref);
9879 			error = got_pathlist_append(&branches,
9880 			    branchname, NULL);
9881 			if (error)
9882 				goto done;
9883 			nbranches++;
9884 		}
9885 	} else if (nbranches == 0) {
9886 		for (i = 0; i < remote->nsend_branches; i++) {
9887 			error = got_pathlist_append(&branches,
9888 			    remote->send_branches[i], NULL);
9889 			if (error)
9890 				goto done;
9891 		}
9892 	}
9893 
9894 	if (send_all_tags) {
9895 		error = got_ref_list(&all_tags, repo, "refs/tags",
9896 		    got_ref_cmp_by_name, NULL);
9897 		if (error)
9898 			goto done;
9899 		TAILQ_FOREACH(re, &all_tags, entry) {
9900 			const char *tagname = got_ref_get_name(re->ref);
9901 			error = got_pathlist_append(&tags,
9902 			    tagname, NULL);
9903 			if (error)
9904 				goto done;
9905 		}
9906 	}
9907 
9908 	/*
9909 	 * To prevent accidents only branches in refs/heads/ can be deleted
9910 	 * with 'got send -d'.
9911 	 * Deleting anything else requires local repository access or Git.
9912 	 */
9913 	TAILQ_FOREACH(pe, &delete_args, entry) {
9914 		const char *branchname = pe->path;
9915 		char *s;
9916 		struct got_pathlist_entry *new;
9917 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
9918 			s = strdup(branchname);
9919 			if (s == NULL) {
9920 				error = got_error_from_errno("strdup");
9921 				goto done;
9922 			}
9923 		} else {
9924 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
9925 				error = got_error_from_errno("asprintf");
9926 				goto done;
9927 			}
9928 		}
9929 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
9930 		if (error || new == NULL /* duplicate */)
9931 			free(s);
9932 		if (error)
9933 			goto done;
9934 		ndelete_branches++;
9935 	}
9936 
9937 	if (nbranches == 0 && ndelete_branches == 0) {
9938 		struct got_reference *head_ref;
9939 		if (worktree)
9940 			error = got_ref_open(&head_ref, repo,
9941 			    got_worktree_get_head_ref_name(worktree), 0);
9942 		else
9943 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
9944 		if (error)
9945 			goto done;
9946 		if (got_ref_is_symbolic(head_ref)) {
9947 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
9948 			got_ref_close(head_ref);
9949 			if (error)
9950 				goto done;
9951 		} else
9952 			ref = head_ref;
9953 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
9954 		    NULL);
9955 		if (error)
9956 			goto done;
9957 		nbranches++;
9958 	}
9959 
9960 	if (verbosity >= 0) {
9961 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
9962 		    remote->name, proto, host,
9963 		    port ? ":" : "", port ? port : "",
9964 		    *server_path == '/' ? "" : "/", server_path);
9965 	}
9966 
9967 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
9968 	    server_path, verbosity);
9969 	if (error)
9970 		goto done;
9971 
9972 	memset(&spa, 0, sizeof(spa));
9973 	spa.last_scaled_packsize[0] = '\0';
9974 	spa.last_p_deltify = -1;
9975 	spa.last_p_written = -1;
9976 	spa.verbosity = verbosity;
9977 	spa.delete_branches = &delete_branches;
9978 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
9979 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
9980 	    check_cancelled, NULL);
9981 	if (spa.printed_something)
9982 		putchar('\n');
9983 	if (error)
9984 		goto done;
9985 	if (!spa.sent_something && verbosity >= 0)
9986 		printf("Already up-to-date\n");
9987 done:
9988 	if (sendpid > 0) {
9989 		if (kill(sendpid, SIGTERM) == -1)
9990 			error = got_error_from_errno("kill");
9991 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
9992 			error = got_error_from_errno("waitpid");
9993 	}
9994 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
9995 		error = got_error_from_errno("close");
9996 	if (repo) {
9997 		const struct got_error *close_err = got_repo_close(repo);
9998 		if (error == NULL)
9999 			error = close_err;
10000 	}
10001 	if (worktree)
10002 		got_worktree_close(worktree);
10003 	if (pack_fds) {
10004 		const struct got_error *pack_err =
10005 		    got_repo_pack_fds_close(pack_fds);
10006 		if (error == NULL)
10007 			error = pack_err;
10008 	}
10009 	if (ref)
10010 		got_ref_close(ref);
10011 	got_pathlist_free(&branches, GOT_PATHLIST_FREE_NONE);
10012 	got_pathlist_free(&tags, GOT_PATHLIST_FREE_NONE);
10013 	got_ref_list_free(&all_branches);
10014 	got_ref_list_free(&all_tags);
10015 	got_pathlist_free(&delete_args, GOT_PATHLIST_FREE_NONE);
10016 	got_pathlist_free(&delete_branches, GOT_PATHLIST_FREE_PATH);
10017 	free(cwd);
10018 	free(repo_path);
10019 	free(proto);
10020 	free(host);
10021 	free(port);
10022 	free(server_path);
10023 	free(repo_name);
10024 	return error;
10025 }
10026 
10027 /*
10028  * Print and if delete is set delete all ref_prefix references.
10029  * If wanted_ref is not NULL, only print or delete this reference.
10030  */
10031 static const struct got_error *
10032 process_logmsg_refs(const char *ref_prefix, size_t prefix_len,
10033     const char *wanted_ref, int delete, struct got_worktree *worktree,
10034     struct got_repository *repo)
10035 {
10036 	const struct got_error			*err;
10037 	struct got_pathlist_head		 paths;
10038 	struct got_reflist_head			 refs;
10039 	struct got_reflist_entry		*re;
10040 	struct got_reflist_object_id_map	*refs_idmap = NULL;
10041 	struct got_commit_object		*commit = NULL;
10042 	struct got_object_id			*id = NULL;
10043 	const char				*header_prefix;
10044 	char					*uuidstr = NULL;
10045 	int					 found = 0;
10046 
10047 	TAILQ_INIT(&refs);
10048 	TAILQ_INIT(&paths);
10049 
10050 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, repo);
10051 	if (err)
10052 		goto done;
10053 
10054 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
10055 	if (err)
10056 		goto done;
10057 
10058 	if (worktree != NULL) {
10059 		err = got_worktree_get_uuid(&uuidstr, worktree);
10060 		if (err)
10061 			goto done;
10062 	}
10063 
10064 	if (wanted_ref) {
10065 		if (strncmp(wanted_ref, "refs/heads/", 11) == 0)
10066 			wanted_ref += 11;
10067 	}
10068 
10069 	if (strcmp(ref_prefix, GOT_WORKTREE_BACKOUT_REF_PREFIX) == 0)
10070 		header_prefix = "backout";
10071 	else
10072 		header_prefix = "cherrypick";
10073 
10074 	TAILQ_FOREACH(re, &refs, entry) {
10075 		const char *refname, *wt;
10076 
10077 		refname = got_ref_get_name(re->ref);
10078 
10079 		err = check_cancelled(NULL);
10080 		if (err)
10081 			goto done;
10082 
10083 		if (strncmp(refname, ref_prefix, prefix_len) == 0)
10084 			refname += prefix_len + 1;  /* skip '-' delimiter */
10085 		else
10086 			continue;
10087 
10088 		wt = refname;
10089 
10090 		if (worktree == NULL || strncmp(refname, uuidstr,
10091 		    GOT_WORKTREE_UUID_STRLEN) == 0)
10092 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
10093 		else
10094 			continue;
10095 
10096 		err = got_repo_match_object_id(&id, NULL, refname,
10097 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10098 		if (err)
10099 			goto done;
10100 
10101 		err = got_object_open_as_commit(&commit, repo, id);
10102 		if (err)
10103 			goto done;
10104 
10105 		if (wanted_ref)
10106 			found = strncmp(wanted_ref, refname,
10107 			    strlen(wanted_ref)) == 0;
10108 		if (wanted_ref && !found) {
10109 			struct got_reflist_head	*ci_refs;
10110 
10111 			ci_refs = got_reflist_object_id_map_lookup(refs_idmap,
10112 			    id);
10113 
10114 			if (ci_refs) {
10115 				char		*refs_str = NULL;
10116 				char const	*r = NULL;
10117 
10118 				err = build_refs_str(&refs_str, ci_refs, id,
10119 				    repo, 1);
10120 				if (err)
10121 					goto done;
10122 
10123 				r = refs_str;
10124 				while (r) {
10125 					if (strncmp(r, wanted_ref,
10126 					    strlen(wanted_ref)) == 0) {
10127 						found = 1;
10128 						break;
10129 					}
10130 					r = strchr(r, ' ');
10131 					if (r)
10132 						++r;
10133 				}
10134 				free(refs_str);
10135 			}
10136 		}
10137 
10138 		if (wanted_ref == NULL || found) {
10139 			if (delete) {
10140 				err = got_ref_delete(re->ref, repo);
10141 				if (err)
10142 					goto done;
10143 				printf("Deleted: ");
10144 				err = print_commit_oneline(commit, id, repo,
10145 				    refs_idmap);
10146 			} else {
10147 				/*
10148 				 * Print paths modified by commit to help
10149 				 * associate commits with worktree changes.
10150 				 */
10151 				err = get_changed_paths(&paths, commit,
10152 				    repo, NULL);
10153 				if (err)
10154 					goto done;
10155 
10156 				err = print_commit(commit, id, repo, NULL,
10157 				    &paths, NULL, 0, 0, refs_idmap, NULL,
10158 				    header_prefix);
10159 				got_pathlist_free(&paths,
10160 				    GOT_PATHLIST_FREE_ALL);
10161 
10162 				if (worktree == NULL)
10163 					printf("work tree: %.*s\n\n",
10164 					    GOT_WORKTREE_UUID_STRLEN, wt);
10165 			}
10166 			if (err || found)
10167 				goto done;
10168 		}
10169 
10170 		got_object_commit_close(commit);
10171 		commit = NULL;
10172 		free(id);
10173 		id = NULL;
10174 	}
10175 
10176 	if (wanted_ref != NULL && !found)
10177 		err = got_error_fmt(GOT_ERR_NOT_REF, "%s", wanted_ref);
10178 
10179 done:
10180 	free(id);
10181 	free(uuidstr);
10182 	got_ref_list_free(&refs);
10183 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
10184 	if (refs_idmap)
10185 		got_reflist_object_id_map_free(refs_idmap);
10186 	if (commit)
10187 		got_object_commit_close(commit);
10188 	return err;
10189 }
10190 
10191 /*
10192  * Create new temp "logmsg" ref of the backed-out or cherrypicked commit
10193  * identified by id for log messages to prepopulate the editor on commit.
10194  */
10195 static const struct got_error *
10196 logmsg_ref(struct got_object_id *id, const char *prefix,
10197     struct got_worktree *worktree, struct got_repository *repo)
10198 {
10199 	const struct got_error	*err = NULL;
10200 	char			*idstr, *ref = NULL, *refname = NULL;
10201 	int			 histedit_in_progress;
10202 	int			 rebase_in_progress, merge_in_progress;
10203 
10204 	/*
10205 	 * Silenty refuse to create merge reference if any histedit, merge,
10206 	 * or rebase operation is in progress.
10207 	 */
10208 	err = got_worktree_histedit_in_progress(&histedit_in_progress,
10209 	    worktree);
10210 	if (err)
10211 		return err;
10212 	if (histedit_in_progress)
10213 		return NULL;
10214 
10215 	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10216 	if (err)
10217 		return err;
10218 	if (rebase_in_progress)
10219 		return NULL;
10220 
10221 	err = got_worktree_merge_in_progress(&merge_in_progress, worktree,
10222 	    repo);
10223 	if (err)
10224 		return err;
10225 	if (merge_in_progress)
10226 		return NULL;
10227 
10228 	err = got_object_id_str(&idstr, id);
10229 	if (err)
10230 		return err;
10231 
10232 	err = got_worktree_get_logmsg_ref_name(&refname, worktree, prefix);
10233 	if (err)
10234 		goto done;
10235 
10236 	if (asprintf(&ref, "%s-%s", refname, idstr) == -1) {
10237 		err = got_error_from_errno("asprintf");
10238 		goto done;
10239 	}
10240 
10241 	err = create_ref(ref, got_worktree_get_base_commit_id(worktree),
10242 	    -1, repo);
10243 done:
10244 	free(ref);
10245 	free(idstr);
10246 	free(refname);
10247 	return err;
10248 }
10249 
10250 __dead static void
10251 usage_cherrypick(void)
10252 {
10253 	fprintf(stderr, "usage: %s cherrypick [-lX] [commit-id]\n",
10254 	    getprogname());
10255 	exit(1);
10256 }
10257 
10258 static const struct got_error *
10259 cmd_cherrypick(int argc, char *argv[])
10260 {
10261 	const struct got_error *error = NULL;
10262 	struct got_worktree *worktree = NULL;
10263 	struct got_repository *repo = NULL;
10264 	char *cwd = NULL, *commit_id_str = NULL, *keyword_idstr = NULL;
10265 	struct got_object_id *commit_id = NULL;
10266 	struct got_commit_object *commit = NULL;
10267 	struct got_object_qid *pid;
10268 	int ch, list_refs = 0, remove_refs = 0;
10269 	struct got_update_progress_arg upa;
10270 	int *pack_fds = NULL;
10271 
10272 #ifndef PROFILE
10273 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10274 	    "unveil", NULL) == -1)
10275 		err(1, "pledge");
10276 #endif
10277 
10278 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10279 		switch (ch) {
10280 		case 'l':
10281 			list_refs = 1;
10282 			break;
10283 		case 'X':
10284 			remove_refs = 1;
10285 			break;
10286 		default:
10287 			usage_cherrypick();
10288 			/* NOTREACHED */
10289 		}
10290 	}
10291 
10292 	argc -= optind;
10293 	argv += optind;
10294 
10295 	if (list_refs || remove_refs) {
10296 		if (argc != 0 && argc != 1)
10297 			usage_cherrypick();
10298 	} else if (argc != 1)
10299 		usage_cherrypick();
10300 	if (list_refs && remove_refs)
10301 		option_conflict('l', 'X');
10302 
10303 	cwd = getcwd(NULL, 0);
10304 	if (cwd == NULL) {
10305 		error = got_error_from_errno("getcwd");
10306 		goto done;
10307 	}
10308 
10309 	error = got_repo_pack_fds_open(&pack_fds);
10310 	if (error != NULL)
10311 		goto done;
10312 
10313 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
10314 	if (error) {
10315 		if (list_refs || remove_refs) {
10316 			if (error->code != GOT_ERR_NOT_WORKTREE)
10317 				goto done;
10318 		} else {
10319 			if (error->code == GOT_ERR_NOT_WORKTREE)
10320 				error = wrap_not_worktree_error(error,
10321 				    "cherrypick", cwd);
10322 			goto done;
10323 		}
10324 	}
10325 
10326 	error = got_repo_open(&repo,
10327 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10328 	    NULL, pack_fds);
10329 	if (error != NULL)
10330 		goto done;
10331 
10332 	error = apply_unveil(got_repo_get_path(repo), 0,
10333 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10334 	if (error)
10335 		goto done;
10336 
10337 	if (list_refs || remove_refs) {
10338 		error = process_logmsg_refs(GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
10339 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN,
10340 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10341 		goto done;
10342 	}
10343 
10344 	error = got_keyword_to_idstr(&keyword_idstr, argv[0], repo, worktree);
10345 	if (error != NULL)
10346 		goto done;
10347 
10348 	error = got_repo_match_object_id(&commit_id, NULL,
10349 	    keyword_idstr != NULL ? keyword_idstr : argv[0],
10350 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10351 	if (error)
10352 		goto done;
10353 	error = got_object_id_str(&commit_id_str, commit_id);
10354 	if (error)
10355 		goto done;
10356 
10357 	error = got_object_open_as_commit(&commit, repo, commit_id);
10358 	if (error)
10359 		goto done;
10360 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10361 	memset(&upa, 0, sizeof(upa));
10362 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
10363 	    commit_id, repo, update_progress, &upa, check_cancelled,
10364 	    NULL);
10365 	if (error != NULL)
10366 		goto done;
10367 
10368 	if (upa.did_something) {
10369 		error = logmsg_ref(commit_id,
10370 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX, worktree, repo);
10371 		if (error)
10372 			goto done;
10373 		printf("Merged commit %s\n", commit_id_str);
10374 	}
10375 	print_merge_progress_stats(&upa);
10376 done:
10377 	free(cwd);
10378 	free(keyword_idstr);
10379 	if (commit)
10380 		got_object_commit_close(commit);
10381 	free(commit_id_str);
10382 	if (worktree)
10383 		got_worktree_close(worktree);
10384 	if (repo) {
10385 		const struct got_error *close_err = got_repo_close(repo);
10386 		if (error == NULL)
10387 			error = close_err;
10388 	}
10389 	if (pack_fds) {
10390 		const struct got_error *pack_err =
10391 		    got_repo_pack_fds_close(pack_fds);
10392 		if (error == NULL)
10393 			error = pack_err;
10394 	}
10395 
10396 	return error;
10397 }
10398 
10399 __dead static void
10400 usage_backout(void)
10401 {
10402 	fprintf(stderr, "usage: %s backout [-lX] [commit-id]\n", getprogname());
10403 	exit(1);
10404 }
10405 
10406 static const struct got_error *
10407 cmd_backout(int argc, char *argv[])
10408 {
10409 	const struct got_error *error = NULL;
10410 	struct got_worktree *worktree = NULL;
10411 	struct got_repository *repo = NULL;
10412 	char *cwd = NULL, *commit_id_str = NULL, *keyword_idstr = NULL;
10413 	struct got_object_id *commit_id = NULL;
10414 	struct got_commit_object *commit = NULL;
10415 	struct got_object_qid *pid;
10416 	int ch, list_refs = 0, remove_refs = 0;
10417 	struct got_update_progress_arg upa;
10418 	int *pack_fds = NULL;
10419 
10420 #ifndef PROFILE
10421 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10422 	    "unveil", NULL) == -1)
10423 		err(1, "pledge");
10424 #endif
10425 
10426 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10427 		switch (ch) {
10428 		case 'l':
10429 			list_refs = 1;
10430 			break;
10431 		case 'X':
10432 			remove_refs = 1;
10433 			break;
10434 		default:
10435 			usage_backout();
10436 			/* NOTREACHED */
10437 		}
10438 	}
10439 
10440 	argc -= optind;
10441 	argv += optind;
10442 
10443 	if (list_refs || remove_refs) {
10444 		if (argc != 0 && argc != 1)
10445 			usage_backout();
10446 	} else if (argc != 1)
10447 		usage_backout();
10448 	if (list_refs && remove_refs)
10449 		option_conflict('l', 'X');
10450 
10451 	cwd = getcwd(NULL, 0);
10452 	if (cwd == NULL) {
10453 		error = got_error_from_errno("getcwd");
10454 		goto done;
10455 	}
10456 
10457 	error = got_repo_pack_fds_open(&pack_fds);
10458 	if (error != NULL)
10459 		goto done;
10460 
10461 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
10462 	if (error) {
10463 		if (list_refs || remove_refs) {
10464 			if (error->code != GOT_ERR_NOT_WORKTREE)
10465 				goto done;
10466 		} else {
10467 			if (error->code == GOT_ERR_NOT_WORKTREE)
10468 				error = wrap_not_worktree_error(error,
10469 				    "backout", cwd);
10470 			goto done;
10471 		}
10472 	}
10473 
10474 	error = got_repo_open(&repo,
10475 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10476 	    NULL, pack_fds);
10477 	if (error != NULL)
10478 		goto done;
10479 
10480 	error = apply_unveil(got_repo_get_path(repo), 0,
10481 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10482 	if (error)
10483 		goto done;
10484 
10485 	if (list_refs || remove_refs) {
10486 		error = process_logmsg_refs(GOT_WORKTREE_BACKOUT_REF_PREFIX,
10487 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN,
10488 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10489 		goto done;
10490 	}
10491 
10492 	error = got_keyword_to_idstr(&keyword_idstr, argv[0], repo, worktree);
10493 	if (error != NULL)
10494 		goto done;
10495 
10496 	error = got_repo_match_object_id(&commit_id, NULL,
10497 	    keyword_idstr != NULL ? keyword_idstr : argv[0],
10498 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10499 	if (error)
10500 		goto done;
10501 	error = got_object_id_str(&commit_id_str, commit_id);
10502 	if (error)
10503 		goto done;
10504 
10505 	error = got_object_open_as_commit(&commit, repo, commit_id);
10506 	if (error)
10507 		goto done;
10508 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10509 	if (pid == NULL) {
10510 		error = got_error(GOT_ERR_ROOT_COMMIT);
10511 		goto done;
10512 	}
10513 
10514 	memset(&upa, 0, sizeof(upa));
10515 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
10516 	    repo, update_progress, &upa, check_cancelled, NULL);
10517 	if (error != NULL)
10518 		goto done;
10519 
10520 	if (upa.did_something) {
10521 		error = logmsg_ref(commit_id, GOT_WORKTREE_BACKOUT_REF_PREFIX,
10522 		    worktree, repo);
10523 		if (error)
10524 			goto done;
10525 		printf("Backed out commit %s\n", commit_id_str);
10526 	}
10527 	print_merge_progress_stats(&upa);
10528 done:
10529 	free(cwd);
10530 	free(keyword_idstr);
10531 	if (commit)
10532 		got_object_commit_close(commit);
10533 	free(commit_id_str);
10534 	if (worktree)
10535 		got_worktree_close(worktree);
10536 	if (repo) {
10537 		const struct got_error *close_err = got_repo_close(repo);
10538 		if (error == NULL)
10539 			error = close_err;
10540 	}
10541 	if (pack_fds) {
10542 		const struct got_error *pack_err =
10543 		    got_repo_pack_fds_close(pack_fds);
10544 		if (error == NULL)
10545 			error = pack_err;
10546 	}
10547 	return error;
10548 }
10549 
10550 __dead static void
10551 usage_rebase(void)
10552 {
10553 	fprintf(stderr, "usage: %s rebase [-aCclX] [branch]\n", getprogname());
10554 	exit(1);
10555 }
10556 
10557 static void
10558 trim_logmsg(char *logmsg, int limit)
10559 {
10560 	char *nl;
10561 	size_t len;
10562 
10563 	len = strlen(logmsg);
10564 	if (len > limit)
10565 		len = limit;
10566 	logmsg[len] = '\0';
10567 	nl = strchr(logmsg, '\n');
10568 	if (nl)
10569 		*nl = '\0';
10570 }
10571 
10572 static const struct got_error *
10573 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
10574 {
10575 	const struct got_error *err;
10576 	char *logmsg0 = NULL;
10577 	const char *s;
10578 
10579 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10580 	if (err)
10581 		return err;
10582 
10583 	s = logmsg0;
10584 	while (isspace((unsigned char)s[0]))
10585 		s++;
10586 
10587 	*logmsg = strdup(s);
10588 	if (*logmsg == NULL) {
10589 		err = got_error_from_errno("strdup");
10590 		goto done;
10591 	}
10592 
10593 	trim_logmsg(*logmsg, limit);
10594 done:
10595 	free(logmsg0);
10596 	return err;
10597 }
10598 
10599 static const struct got_error *
10600 show_rebase_merge_conflict(struct got_object_id *id,
10601     struct got_repository *repo)
10602 {
10603 	const struct got_error *err;
10604 	struct got_commit_object *commit = NULL;
10605 	char *id_str = NULL, *logmsg = NULL;
10606 
10607 	err = got_object_open_as_commit(&commit, repo, id);
10608 	if (err)
10609 		return err;
10610 
10611 	err = got_object_id_str(&id_str, id);
10612 	if (err)
10613 		goto done;
10614 
10615 	id_str[12] = '\0';
10616 
10617 	err = get_short_logmsg(&logmsg, 42, commit);
10618 	if (err)
10619 		goto done;
10620 
10621 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
10622 done:
10623 	free(id_str);
10624 	got_object_commit_close(commit);
10625 	free(logmsg);
10626 	return err;
10627 }
10628 
10629 static const struct got_error *
10630 show_rebase_progress(struct got_commit_object *commit,
10631     struct got_object_id *old_id, struct got_object_id *new_id)
10632 {
10633 	const struct got_error *err;
10634 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
10635 
10636 	err = got_object_id_str(&old_id_str, old_id);
10637 	if (err)
10638 		goto done;
10639 
10640 	if (new_id) {
10641 		err = got_object_id_str(&new_id_str, new_id);
10642 		if (err)
10643 			goto done;
10644 	}
10645 
10646 	old_id_str[12] = '\0';
10647 	if (new_id_str)
10648 		new_id_str[12] = '\0';
10649 
10650 	err = get_short_logmsg(&logmsg, 42, commit);
10651 	if (err)
10652 		goto done;
10653 
10654 	printf("%s -> %s: %s\n", old_id_str,
10655 	    new_id_str ? new_id_str : "no-op change", logmsg);
10656 done:
10657 	free(old_id_str);
10658 	free(new_id_str);
10659 	free(logmsg);
10660 	return err;
10661 }
10662 
10663 static const struct got_error *
10664 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
10665     struct got_reference *branch, struct got_reference *tmp_branch,
10666     struct got_repository *repo, int create_backup)
10667 {
10668 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
10669 	return got_worktree_rebase_complete(worktree, fileindex,
10670 	    tmp_branch, branch, repo, create_backup);
10671 }
10672 
10673 static const struct got_error *
10674 rebase_commit(struct got_pathlist_head *merged_paths,
10675     struct got_worktree *worktree, struct got_fileindex *fileindex,
10676     struct got_reference *tmp_branch, const char *committer,
10677     struct got_object_id *commit_id, int allow_conflict,
10678     struct got_repository *repo)
10679 {
10680 	const struct got_error *error;
10681 	struct got_commit_object *commit;
10682 	struct got_object_id *new_commit_id;
10683 
10684 	error = got_object_open_as_commit(&commit, repo, commit_id);
10685 	if (error)
10686 		return error;
10687 
10688 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
10689 	    worktree, fileindex, tmp_branch, committer, commit, commit_id,
10690 	    allow_conflict, repo);
10691 	if (error) {
10692 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
10693 			goto done;
10694 		error = show_rebase_progress(commit, commit_id, NULL);
10695 	} else {
10696 		error = show_rebase_progress(commit, commit_id, new_commit_id);
10697 		free(new_commit_id);
10698 	}
10699 done:
10700 	got_object_commit_close(commit);
10701 	return error;
10702 }
10703 
10704 struct check_path_prefix_arg {
10705 	const char *path_prefix;
10706 	size_t len;
10707 	int errcode;
10708 };
10709 
10710 static const struct got_error *
10711 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
10712     struct got_blob_object *blob2, FILE *f1, FILE *f2,
10713     struct got_object_id *id1, struct got_object_id *id2,
10714     const char *path1, const char *path2,
10715     mode_t mode1, mode_t mode2, struct got_repository *repo)
10716 {
10717 	struct check_path_prefix_arg *a = arg;
10718 
10719 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
10720 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
10721 		return got_error(a->errcode);
10722 
10723 	return NULL;
10724 }
10725 
10726 static const struct got_error *
10727 check_path_prefix(struct got_object_id *parent_id,
10728     struct got_object_id *commit_id, const char *path_prefix,
10729     int errcode, struct got_repository *repo)
10730 {
10731 	const struct got_error *err;
10732 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
10733 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
10734 	struct check_path_prefix_arg cpp_arg;
10735 
10736 	if (got_path_is_root_dir(path_prefix))
10737 		return NULL;
10738 
10739 	err = got_object_open_as_commit(&commit, repo, commit_id);
10740 	if (err)
10741 		goto done;
10742 
10743 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
10744 	if (err)
10745 		goto done;
10746 
10747 	err = got_object_open_as_tree(&tree1, repo,
10748 	    got_object_commit_get_tree_id(parent_commit));
10749 	if (err)
10750 		goto done;
10751 
10752 	err = got_object_open_as_tree(&tree2, repo,
10753 	    got_object_commit_get_tree_id(commit));
10754 	if (err)
10755 		goto done;
10756 
10757 	cpp_arg.path_prefix = path_prefix;
10758 	while (cpp_arg.path_prefix[0] == '/')
10759 		cpp_arg.path_prefix++;
10760 	cpp_arg.len = strlen(cpp_arg.path_prefix);
10761 	cpp_arg.errcode = errcode;
10762 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
10763 	    check_path_prefix_in_diff, &cpp_arg, 0);
10764 done:
10765 	if (tree1)
10766 		got_object_tree_close(tree1);
10767 	if (tree2)
10768 		got_object_tree_close(tree2);
10769 	if (commit)
10770 		got_object_commit_close(commit);
10771 	if (parent_commit)
10772 		got_object_commit_close(parent_commit);
10773 	return err;
10774 }
10775 
10776 static const struct got_error *
10777 collect_commits(struct got_object_id_queue *commits,
10778     struct got_object_id *initial_commit_id,
10779     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
10780     const char *path_prefix, int path_prefix_errcode,
10781     struct got_repository *repo)
10782 {
10783 	const struct got_error *err = NULL;
10784 	struct got_commit_graph *graph = NULL;
10785 	struct got_object_id parent_id, commit_id;
10786 	struct got_object_qid *qid;
10787 
10788 	err = got_commit_graph_open(&graph, "/", 1);
10789 	if (err)
10790 		return err;
10791 
10792 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
10793 	    check_cancelled, NULL);
10794 	if (err)
10795 		goto done;
10796 
10797 	memcpy(&commit_id, initial_commit_id, sizeof(commit_id));
10798 	while (got_object_id_cmp(&commit_id, iter_stop_id) != 0) {
10799 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
10800 		    check_cancelled, NULL);
10801 		if (err) {
10802 			if (err->code == GOT_ERR_ITER_COMPLETED) {
10803 				err = got_error_msg(GOT_ERR_ANCESTRY,
10804 				    "ran out of commits to rebase before "
10805 				    "youngest common ancestor commit has "
10806 				    "been reached?!?");
10807 			}
10808 			goto done;
10809 		} else {
10810 			err = check_path_prefix(&parent_id, &commit_id,
10811 			    path_prefix, path_prefix_errcode, repo);
10812 			if (err)
10813 				goto done;
10814 
10815 			err = got_object_qid_alloc(&qid, &commit_id);
10816 			if (err)
10817 				goto done;
10818 			STAILQ_INSERT_HEAD(commits, qid, entry);
10819 
10820 			memcpy(&commit_id, &parent_id, sizeof(commit_id));
10821 		}
10822 	}
10823 done:
10824 	got_commit_graph_close(graph);
10825 	return err;
10826 }
10827 
10828 static const struct got_error *
10829 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
10830 {
10831 	const struct got_error *err = NULL;
10832 	time_t committer_time;
10833 	struct tm tm;
10834 	char datebuf[11]; /* YYYY-MM-DD + NUL */
10835 	char *author0 = NULL, *author, *smallerthan;
10836 	char *logmsg0 = NULL, *logmsg, *newline;
10837 
10838 	committer_time = got_object_commit_get_committer_time(commit);
10839 	if (gmtime_r(&committer_time, &tm) == NULL)
10840 		return got_error_from_errno("gmtime_r");
10841 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
10842 		return got_error(GOT_ERR_NO_SPACE);
10843 
10844 	author0 = strdup(got_object_commit_get_author(commit));
10845 	if (author0 == NULL)
10846 		return got_error_from_errno("strdup");
10847 	author = author0;
10848 	smallerthan = strchr(author, '<');
10849 	if (smallerthan && smallerthan[1] != '\0')
10850 		author = smallerthan + 1;
10851 	author[strcspn(author, "@>")] = '\0';
10852 
10853 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10854 	if (err)
10855 		goto done;
10856 	logmsg = logmsg0;
10857 	while (*logmsg == '\n')
10858 		logmsg++;
10859 	newline = strchr(logmsg, '\n');
10860 	if (newline)
10861 		*newline = '\0';
10862 
10863 	if (asprintf(brief_str, "%s %s  %s",
10864 	    datebuf, author, logmsg) == -1)
10865 		err = got_error_from_errno("asprintf");
10866 done:
10867 	free(author0);
10868 	free(logmsg0);
10869 	return err;
10870 }
10871 
10872 static const struct got_error *
10873 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
10874     struct got_repository *repo)
10875 {
10876 	const struct got_error *err;
10877 	char *id_str;
10878 
10879 	err = got_object_id_str(&id_str, id);
10880 	if (err)
10881 		return err;
10882 
10883 	err = got_ref_delete(ref, repo);
10884 	if (err)
10885 		goto done;
10886 
10887 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
10888 done:
10889 	free(id_str);
10890 	return err;
10891 }
10892 
10893 static const struct got_error *
10894 print_backup_ref(const char *branch_name, const char *new_id_str,
10895     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
10896     struct got_reflist_object_id_map *refs_idmap,
10897     struct got_repository *repo)
10898 {
10899 	const struct got_error *err = NULL;
10900 	struct got_reflist_head *refs;
10901 	char *refs_str = NULL;
10902 	struct got_object_id *new_commit_id = NULL;
10903 	struct got_commit_object *new_commit = NULL;
10904 	char *new_commit_brief_str = NULL;
10905 	struct got_object_id *yca_id = NULL;
10906 	struct got_commit_object *yca_commit = NULL;
10907 	char *yca_id_str = NULL, *yca_brief_str = NULL;
10908 	char *custom_refs_str;
10909 
10910 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
10911 		return got_error_from_errno("asprintf");
10912 
10913 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL, NULL,
10914 	    0, 0, refs_idmap, custom_refs_str, NULL);
10915 	if (err)
10916 		goto done;
10917 
10918 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
10919 	if (err)
10920 		goto done;
10921 
10922 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
10923 	if (refs) {
10924 		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
10925 		if (err)
10926 			goto done;
10927 	}
10928 
10929 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
10930 	if (err)
10931 		goto done;
10932 
10933 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
10934 	if (err)
10935 		goto done;
10936 
10937 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
10938 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
10939 	if (err)
10940 		goto done;
10941 
10942 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
10943 	    refs_str ? " (" : "", refs_str ? refs_str : "",
10944 	    refs_str ? ")" : "", new_commit_brief_str);
10945 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
10946 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
10947 		free(refs_str);
10948 		refs_str = NULL;
10949 
10950 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
10951 		if (err)
10952 			goto done;
10953 
10954 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
10955 		if (err)
10956 			goto done;
10957 
10958 		err = got_object_id_str(&yca_id_str, yca_id);
10959 		if (err)
10960 			goto done;
10961 
10962 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
10963 		if (refs) {
10964 			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
10965 			if (err)
10966 				goto done;
10967 		}
10968 		printf("history forked at %s%s%s%s\n %s\n",
10969 		    yca_id_str,
10970 		    refs_str ? " (" : "", refs_str ? refs_str : "",
10971 		    refs_str ? ")" : "", yca_brief_str);
10972 	}
10973 done:
10974 	free(custom_refs_str);
10975 	free(new_commit_id);
10976 	free(refs_str);
10977 	free(yca_id);
10978 	free(yca_id_str);
10979 	free(yca_brief_str);
10980 	if (new_commit)
10981 		got_object_commit_close(new_commit);
10982 	if (yca_commit)
10983 		got_object_commit_close(yca_commit);
10984 
10985 	return err;
10986 }
10987 
10988 static const struct got_error *
10989 worktree_has_logmsg_ref(const char *caller, struct got_worktree *worktree,
10990     struct got_repository *repo)
10991 {
10992 	const struct got_error		*err;
10993 	struct got_reflist_head		 refs;
10994 	struct got_reflist_entry	*re;
10995 	char				*uuidstr = NULL;
10996 	static char			 msg[160];
10997 
10998 	TAILQ_INIT(&refs);
10999 
11000 	err = got_worktree_get_uuid(&uuidstr, worktree);
11001 	if (err)
11002 		goto done;
11003 
11004 	err = got_ref_list(&refs, repo, "refs/got/worktree",
11005 	    got_ref_cmp_by_name, repo);
11006 	if (err)
11007 		goto done;
11008 
11009 	TAILQ_FOREACH(re, &refs, entry) {
11010 		const char *cmd, *refname, *type;
11011 
11012 		refname = got_ref_get_name(re->ref);
11013 
11014 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
11015 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
11016 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
11017 			cmd = "cherrypick";
11018 			type = "cherrypicked";
11019 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
11020 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
11021 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
11022 			cmd = "backout";
11023 			type = "backed-out";
11024 		} else
11025 			continue;
11026 
11027 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) != 0)
11028 			continue;
11029 
11030 		snprintf(msg, sizeof(msg),
11031 		    "work tree has references created by %s commits which "
11032 		    "must be removed with 'got %s -X' before running the %s "
11033 		    "command", type, cmd, caller);
11034 		err = got_error_msg(GOT_ERR_WORKTREE_META, msg);
11035 		goto done;
11036 	}
11037 
11038 done:
11039 	free(uuidstr);
11040 	got_ref_list_free(&refs);
11041 	return err;
11042 }
11043 
11044 static const struct got_error *
11045 process_backup_refs(const char *backup_ref_prefix,
11046     const char *wanted_branch_name,
11047     int delete, struct got_repository *repo)
11048 {
11049 	const struct got_error *err;
11050 	struct got_reflist_head refs, backup_refs;
11051 	struct got_reflist_entry *re;
11052 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
11053 	struct got_object_id *old_commit_id = NULL;
11054 	char *branch_name = NULL;
11055 	struct got_commit_object *old_commit = NULL;
11056 	struct got_reflist_object_id_map *refs_idmap = NULL;
11057 	int wanted_branch_found = 0;
11058 
11059 	TAILQ_INIT(&refs);
11060 	TAILQ_INIT(&backup_refs);
11061 
11062 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
11063 	if (err)
11064 		return err;
11065 
11066 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
11067 	if (err)
11068 		goto done;
11069 
11070 	if (wanted_branch_name) {
11071 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
11072 			wanted_branch_name += 11;
11073 	}
11074 
11075 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
11076 	    got_ref_cmp_by_commit_timestamp_descending, repo);
11077 	if (err)
11078 		goto done;
11079 
11080 	TAILQ_FOREACH(re, &backup_refs, entry) {
11081 		const char *refname = got_ref_get_name(re->ref);
11082 		char *slash;
11083 
11084 		err = check_cancelled(NULL);
11085 		if (err)
11086 			break;
11087 
11088 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
11089 		if (err)
11090 			break;
11091 
11092 		err = got_object_open_as_commit(&old_commit, repo,
11093 		    old_commit_id);
11094 		if (err)
11095 			break;
11096 
11097 		if (strncmp(backup_ref_prefix, refname,
11098 		    backup_ref_prefix_len) == 0)
11099 			refname += backup_ref_prefix_len;
11100 
11101 		while (refname[0] == '/')
11102 			refname++;
11103 
11104 		branch_name = strdup(refname);
11105 		if (branch_name == NULL) {
11106 			err = got_error_from_errno("strdup");
11107 			break;
11108 		}
11109 		slash = strrchr(branch_name, '/');
11110 		if (slash) {
11111 			*slash = '\0';
11112 			refname += strlen(branch_name) + 1;
11113 		}
11114 
11115 		if (wanted_branch_name == NULL ||
11116 		    strcmp(wanted_branch_name, branch_name) == 0) {
11117 			wanted_branch_found = 1;
11118 			if (delete) {
11119 				err = delete_backup_ref(re->ref,
11120 				    old_commit_id, repo);
11121 			} else {
11122 				err = print_backup_ref(branch_name, refname,
11123 				    old_commit_id, old_commit, refs_idmap,
11124 				    repo);
11125 			}
11126 			if (err)
11127 				break;
11128 		}
11129 
11130 		free(old_commit_id);
11131 		old_commit_id = NULL;
11132 		free(branch_name);
11133 		branch_name = NULL;
11134 		got_object_commit_close(old_commit);
11135 		old_commit = NULL;
11136 	}
11137 
11138 	if (wanted_branch_name && !wanted_branch_found) {
11139 		err = got_error_fmt(GOT_ERR_NOT_REF,
11140 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
11141 	}
11142 done:
11143 	if (refs_idmap)
11144 		got_reflist_object_id_map_free(refs_idmap);
11145 	got_ref_list_free(&refs);
11146 	got_ref_list_free(&backup_refs);
11147 	free(old_commit_id);
11148 	free(branch_name);
11149 	if (old_commit)
11150 		got_object_commit_close(old_commit);
11151 	return err;
11152 }
11153 
11154 static const struct got_error *
11155 abort_progress(void *arg, unsigned char status, const char *path)
11156 {
11157 	/*
11158 	 * Unversioned files should not clutter progress output when
11159 	 * an operation is aborted.
11160 	 */
11161 	if (status == GOT_STATUS_UNVERSIONED)
11162 		return NULL;
11163 
11164 	return update_progress(arg, status, path);
11165 }
11166 
11167 static const struct got_error *
11168 cmd_rebase(int argc, char *argv[])
11169 {
11170 	const struct got_error *error = NULL;
11171 	struct got_worktree *worktree = NULL;
11172 	struct got_repository *repo = NULL;
11173 	struct got_fileindex *fileindex = NULL;
11174 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
11175 	struct got_reference *branch = NULL;
11176 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
11177 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
11178 	struct got_object_id *resume_commit_id = NULL;
11179 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
11180 	struct got_object_id *head_commit_id = NULL;
11181 	struct got_reference *head_ref = NULL;
11182 	struct got_commit_object *commit = NULL;
11183 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
11184 	int histedit_in_progress = 0, merge_in_progress = 0;
11185 	int create_backup = 1, list_backups = 0, delete_backups = 0;
11186 	int allow_conflict = 0;
11187 	struct got_object_id_queue commits;
11188 	struct got_pathlist_head merged_paths;
11189 	const struct got_object_id_queue *parent_ids;
11190 	struct got_object_qid *qid, *pid;
11191 	struct got_update_progress_arg upa;
11192 	int *pack_fds = NULL;
11193 
11194 	STAILQ_INIT(&commits);
11195 	TAILQ_INIT(&merged_paths);
11196 	memset(&upa, 0, sizeof(upa));
11197 
11198 #ifndef PROFILE
11199 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11200 	    "unveil", NULL) == -1)
11201 		err(1, "pledge");
11202 #endif
11203 
11204 	while ((ch = getopt(argc, argv, "aCclX")) != -1) {
11205 		switch (ch) {
11206 		case 'a':
11207 			abort_rebase = 1;
11208 			break;
11209 		case 'C':
11210 			allow_conflict = 1;
11211 			break;
11212 		case 'c':
11213 			continue_rebase = 1;
11214 			break;
11215 		case 'l':
11216 			list_backups = 1;
11217 			break;
11218 		case 'X':
11219 			delete_backups = 1;
11220 			break;
11221 		default:
11222 			usage_rebase();
11223 			/* NOTREACHED */
11224 		}
11225 	}
11226 
11227 	argc -= optind;
11228 	argv += optind;
11229 
11230 	if (list_backups) {
11231 		if (abort_rebase)
11232 			option_conflict('l', 'a');
11233 		if (allow_conflict)
11234 			option_conflict('l', 'C');
11235 		if (continue_rebase)
11236 			option_conflict('l', 'c');
11237 		if (delete_backups)
11238 			option_conflict('l', 'X');
11239 		if (argc != 0 && argc != 1)
11240 			usage_rebase();
11241 	} else if (delete_backups) {
11242 		if (abort_rebase)
11243 			option_conflict('X', 'a');
11244 		if (allow_conflict)
11245 			option_conflict('X', 'C');
11246 		if (continue_rebase)
11247 			option_conflict('X', 'c');
11248 		if (list_backups)
11249 			option_conflict('l', 'X');
11250 		if (argc != 0 && argc != 1)
11251 			usage_rebase();
11252 	} else if (allow_conflict) {
11253 		if (abort_rebase)
11254 			option_conflict('C', 'a');
11255 		if (!continue_rebase)
11256 			errx(1, "-C option requires -c");
11257 	} else {
11258 		if (abort_rebase && continue_rebase)
11259 			usage_rebase();
11260 		else if (abort_rebase || continue_rebase) {
11261 			if (argc != 0)
11262 				usage_rebase();
11263 		} else if (argc != 1)
11264 			usage_rebase();
11265 	}
11266 
11267 	cwd = getcwd(NULL, 0);
11268 	if (cwd == NULL) {
11269 		error = got_error_from_errno("getcwd");
11270 		goto done;
11271 	}
11272 
11273 	error = got_repo_pack_fds_open(&pack_fds);
11274 	if (error != NULL)
11275 		goto done;
11276 
11277 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
11278 	if (error) {
11279 		if (list_backups || delete_backups) {
11280 			if (error->code != GOT_ERR_NOT_WORKTREE)
11281 				goto done;
11282 		} else {
11283 			if (error->code == GOT_ERR_NOT_WORKTREE)
11284 				error = wrap_not_worktree_error(error,
11285 				    "rebase", cwd);
11286 			goto done;
11287 		}
11288 	}
11289 
11290 	error = get_gitconfig_path(&gitconfig_path);
11291 	if (error)
11292 		goto done;
11293 	error = got_repo_open(&repo,
11294 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
11295 	    gitconfig_path, pack_fds);
11296 	if (error != NULL)
11297 		goto done;
11298 
11299 	if (worktree != NULL && !list_backups && !delete_backups) {
11300 		error = worktree_has_logmsg_ref("rebase", worktree, repo);
11301 		if (error)
11302 			goto done;
11303 	}
11304 
11305 	error = get_author(&committer, repo, worktree);
11306 	if (error && error->code != GOT_ERR_COMMIT_NO_AUTHOR)
11307 		goto done;
11308 
11309 	error = apply_unveil(got_repo_get_path(repo), 0,
11310 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
11311 	if (error)
11312 		goto done;
11313 
11314 	if (list_backups || delete_backups) {
11315 		error = process_backup_refs(
11316 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
11317 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
11318 		goto done; /* nothing else to do */
11319 	}
11320 
11321 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
11322 	    worktree);
11323 	if (error)
11324 		goto done;
11325 	if (histedit_in_progress) {
11326 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
11327 		goto done;
11328 	}
11329 
11330 	error = got_worktree_merge_in_progress(&merge_in_progress,
11331 	    worktree, repo);
11332 	if (error)
11333 		goto done;
11334 	if (merge_in_progress) {
11335 		error = got_error(GOT_ERR_MERGE_BUSY);
11336 		goto done;
11337 	}
11338 
11339 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
11340 	if (error)
11341 		goto done;
11342 
11343 	if (abort_rebase) {
11344 		if (!rebase_in_progress) {
11345 			error = got_error(GOT_ERR_NOT_REBASING);
11346 			goto done;
11347 		}
11348 		error = got_worktree_rebase_continue(&resume_commit_id,
11349 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11350 		    worktree, repo);
11351 		if (error)
11352 			goto done;
11353 		printf("Switching work tree to %s\n",
11354 		    got_ref_get_symref_target(new_base_branch));
11355 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
11356 		    new_base_branch, abort_progress, &upa);
11357 		if (error)
11358 			goto done;
11359 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
11360 		print_merge_progress_stats(&upa);
11361 		goto done; /* nothing else to do */
11362 	}
11363 
11364 	if (continue_rebase) {
11365 		if (!rebase_in_progress) {
11366 			error = got_error(GOT_ERR_NOT_REBASING);
11367 			goto done;
11368 		}
11369 		error = got_worktree_rebase_continue(&resume_commit_id,
11370 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11371 		    worktree, repo);
11372 		if (error)
11373 			goto done;
11374 
11375 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
11376 		    committer, resume_commit_id, allow_conflict, repo);
11377 		if (error)
11378 			goto done;
11379 
11380 		yca_id = got_object_id_dup(resume_commit_id);
11381 		if (yca_id == NULL) {
11382 			error = got_error_from_errno("got_object_id_dup");
11383 			goto done;
11384 		}
11385 	} else {
11386 		error = got_ref_open(&branch, repo, argv[0], 0);
11387 		if (error != NULL)
11388 			goto done;
11389 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
11390 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
11391 			    "will not rebase a branch which lives outside "
11392 			    "the \"refs/heads/\" reference namespace");
11393 			goto done;
11394 		}
11395 	}
11396 
11397 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
11398 	if (error)
11399 		goto done;
11400 
11401 	if (!continue_rebase) {
11402 		struct got_object_id *base_commit_id;
11403 
11404 		error = got_ref_open(&head_ref, repo,
11405 		    got_worktree_get_head_ref_name(worktree), 0);
11406 		if (error)
11407 			goto done;
11408 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
11409 		if (error)
11410 			goto done;
11411 		base_commit_id = got_worktree_get_base_commit_id(worktree);
11412 		if (got_object_id_cmp(base_commit_id, head_commit_id) != 0) {
11413 			error = got_error(GOT_ERR_REBASE_OUT_OF_DATE);
11414 			goto done;
11415 		}
11416 
11417 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
11418 		    base_commit_id, branch_head_commit_id, 1, repo,
11419 		    check_cancelled, NULL);
11420 		if (error) {
11421 			if (error->code == GOT_ERR_ANCESTRY) {
11422 				error = got_error_msg(GOT_ERR_ANCESTRY,
11423 				    "specified branch shares no common "
11424 				    "ancestry with work tree's branch");
11425 			}
11426 			goto done;
11427 		}
11428 
11429 		if (got_object_id_cmp(base_commit_id, yca_id) == 0) {
11430 			struct got_pathlist_head paths;
11431 			printf("%s is already based on %s\n",
11432 			    got_ref_get_name(branch),
11433 			    got_worktree_get_head_ref_name(worktree));
11434 			error = switch_head_ref(branch, branch_head_commit_id,
11435 			    worktree, repo);
11436 			if (error)
11437 				goto done;
11438 			error = got_worktree_set_base_commit_id(worktree, repo,
11439 			    branch_head_commit_id);
11440 			if (error)
11441 				goto done;
11442 			TAILQ_INIT(&paths);
11443 			error = got_pathlist_append(&paths, "", NULL);
11444 			if (error)
11445 				goto done;
11446 			error = got_worktree_checkout_files(worktree,
11447 			    &paths, repo, update_progress, &upa,
11448 			    check_cancelled, NULL);
11449 			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
11450 			if (error)
11451 				goto done;
11452 			if (upa.did_something) {
11453 				char *id_str;
11454 				error = got_object_id_str(&id_str,
11455 				    branch_head_commit_id);
11456 				if (error)
11457 					goto done;
11458 				printf("Updated to %s: %s\n",
11459 				    got_worktree_get_head_ref_name(worktree),
11460 				    id_str);
11461 				free(id_str);
11462 			} else
11463 				printf("Already up-to-date\n");
11464 			print_update_progress_stats(&upa);
11465 			goto done;
11466 		}
11467 	}
11468 
11469 	commit_id = branch_head_commit_id;
11470 	error = got_object_open_as_commit(&commit, repo, commit_id);
11471 	if (error)
11472 		goto done;
11473 
11474 	parent_ids = got_object_commit_get_parent_ids(commit);
11475 	pid = STAILQ_FIRST(parent_ids);
11476 	if (pid) {
11477 		error = collect_commits(&commits, commit_id, &pid->id,
11478 		    yca_id, got_worktree_get_path_prefix(worktree),
11479 		    GOT_ERR_REBASE_PATH, repo);
11480 		if (error)
11481 			goto done;
11482 	}
11483 
11484 	got_object_commit_close(commit);
11485 	commit = NULL;
11486 
11487 	if (!continue_rebase) {
11488 		error = got_worktree_rebase_prepare(&new_base_branch,
11489 		    &tmp_branch, &fileindex, worktree, branch, repo);
11490 		if (error)
11491 			goto done;
11492 	}
11493 
11494 	if (STAILQ_EMPTY(&commits)) {
11495 		if (continue_rebase) {
11496 			error = rebase_complete(worktree, fileindex,
11497 			    branch, tmp_branch, repo, create_backup);
11498 			goto done;
11499 		} else {
11500 			/* Fast-forward the reference of the branch. */
11501 			struct got_object_id *new_head_commit_id;
11502 			char *id_str;
11503 			error = got_ref_resolve(&new_head_commit_id, repo,
11504 			    new_base_branch);
11505 			if (error)
11506 				goto done;
11507 			error = got_object_id_str(&id_str, new_head_commit_id);
11508 			if (error)
11509 				goto done;
11510 			printf("Forwarding %s to commit %s\n",
11511 			    got_ref_get_name(branch), id_str);
11512 			free(id_str);
11513 			error = got_ref_change_ref(branch,
11514 			    new_head_commit_id);
11515 			if (error)
11516 				goto done;
11517 			/* No backup needed since objects did not change. */
11518 			create_backup = 0;
11519 		}
11520 	}
11521 
11522 	pid = NULL;
11523 	STAILQ_FOREACH(qid, &commits, entry) {
11524 
11525 		commit_id = &qid->id;
11526 		parent_id = pid ? &pid->id : yca_id;
11527 		pid = qid;
11528 
11529 		memset(&upa, 0, sizeof(upa));
11530 		error = got_worktree_rebase_merge_files(&merged_paths,
11531 		    worktree, fileindex, parent_id, commit_id, repo,
11532 		    update_progress, &upa, check_cancelled, NULL);
11533 		if (error)
11534 			goto done;
11535 
11536 		print_merge_progress_stats(&upa);
11537 		if (upa.conflicts > 0 || upa.missing > 0 ||
11538 		    upa.not_deleted > 0 || upa.unversioned > 0) {
11539 			if (upa.conflicts > 0) {
11540 				error = show_rebase_merge_conflict(&qid->id,
11541 				    repo);
11542 				if (error)
11543 					goto done;
11544 			}
11545 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11546 			break;
11547 		}
11548 
11549 		error = rebase_commit(&merged_paths, worktree, fileindex,
11550 		    tmp_branch, committer, commit_id, 0, repo);
11551 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11552 		if (error)
11553 			goto done;
11554 	}
11555 
11556 	if (upa.conflicts > 0 || upa.missing > 0 ||
11557 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11558 		error = got_worktree_rebase_postpone(worktree, fileindex);
11559 		if (error)
11560 			goto done;
11561 		if (upa.conflicts > 0 && upa.missing == 0 &&
11562 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11563 			error = got_error_msg(GOT_ERR_CONFLICTS,
11564 			    "conflicts must be resolved before rebasing "
11565 			    "can continue");
11566 		} else if (upa.conflicts > 0) {
11567 			error = got_error_msg(GOT_ERR_CONFLICTS,
11568 			    "conflicts must be resolved before rebasing "
11569 			    "can continue; changes destined for some "
11570 			    "files were not yet merged and should be "
11571 			    "merged manually if required before the "
11572 			    "rebase operation is continued");
11573 		} else {
11574 			error = got_error_msg(GOT_ERR_CONFLICTS,
11575 			    "changes destined for some files were not "
11576 			    "yet merged and should be merged manually "
11577 			    "if required before the rebase operation "
11578 			    "is continued");
11579 		}
11580 	} else
11581 		error = rebase_complete(worktree, fileindex, branch,
11582 		    tmp_branch, repo, create_backup);
11583 done:
11584 	free(cwd);
11585 	free(committer);
11586 	free(gitconfig_path);
11587 	got_object_id_queue_free(&commits);
11588 	free(branch_head_commit_id);
11589 	free(resume_commit_id);
11590 	free(head_commit_id);
11591 	free(yca_id);
11592 	if (commit)
11593 		got_object_commit_close(commit);
11594 	if (branch)
11595 		got_ref_close(branch);
11596 	if (new_base_branch)
11597 		got_ref_close(new_base_branch);
11598 	if (tmp_branch)
11599 		got_ref_close(tmp_branch);
11600 	if (head_ref)
11601 		got_ref_close(head_ref);
11602 	if (worktree)
11603 		got_worktree_close(worktree);
11604 	if (repo) {
11605 		const struct got_error *close_err = got_repo_close(repo);
11606 		if (error == NULL)
11607 			error = close_err;
11608 	}
11609 	if (pack_fds) {
11610 		const struct got_error *pack_err =
11611 		    got_repo_pack_fds_close(pack_fds);
11612 		if (error == NULL)
11613 			error = pack_err;
11614 	}
11615 	return error;
11616 }
11617 
11618 __dead static void
11619 usage_histedit(void)
11620 {
11621 	fprintf(stderr, "usage: %s histedit [-aCcdeflmX] [-F histedit-script] "
11622 	    "[branch]\n", getprogname());
11623 	exit(1);
11624 }
11625 
11626 #define GOT_HISTEDIT_PICK 'p'
11627 #define GOT_HISTEDIT_EDIT 'e'
11628 #define GOT_HISTEDIT_FOLD 'f'
11629 #define GOT_HISTEDIT_DROP 'd'
11630 #define GOT_HISTEDIT_MESG 'm'
11631 
11632 static const struct got_histedit_cmd {
11633 	unsigned char code;
11634 	const char *name;
11635 	const char *desc;
11636 } got_histedit_cmds[] = {
11637 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
11638 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
11639 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
11640 	    "be used" },
11641 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
11642 	{ GOT_HISTEDIT_MESG, "mesg",
11643 	    "single-line log message for commit above (open editor if empty)" },
11644 };
11645 
11646 struct got_histedit_list_entry {
11647 	TAILQ_ENTRY(got_histedit_list_entry) entry;
11648 	struct got_object_id *commit_id;
11649 	const struct got_histedit_cmd *cmd;
11650 	char *logmsg;
11651 };
11652 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
11653 
11654 static const struct got_error *
11655 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
11656     FILE *f, struct got_repository *repo)
11657 {
11658 	const struct got_error *err = NULL;
11659 	char *logmsg = NULL, *id_str = NULL;
11660 	struct got_commit_object *commit = NULL;
11661 	int n;
11662 
11663 	err = got_object_open_as_commit(&commit, repo, commit_id);
11664 	if (err)
11665 		goto done;
11666 
11667 	err = get_short_logmsg(&logmsg, 34, commit);
11668 	if (err)
11669 		goto done;
11670 
11671 	err = got_object_id_str(&id_str, commit_id);
11672 	if (err)
11673 		goto done;
11674 
11675 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
11676 	if (n < 0)
11677 		err = got_ferror(f, GOT_ERR_IO);
11678 done:
11679 	if (commit)
11680 		got_object_commit_close(commit);
11681 	free(id_str);
11682 	free(logmsg);
11683 	return err;
11684 }
11685 
11686 static const struct got_error *
11687 histedit_write_commit_list(struct got_object_id_queue *commits,
11688     FILE *f, int edit_logmsg_only, int fold_only, int drop_only,
11689     int edit_only, struct got_repository *repo)
11690 {
11691 	const struct got_error *err = NULL;
11692 	struct got_object_qid *qid;
11693 	const char *histedit_cmd = NULL;
11694 
11695 	if (STAILQ_EMPTY(commits))
11696 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
11697 
11698 	STAILQ_FOREACH(qid, commits, entry) {
11699 		histedit_cmd = got_histedit_cmds[0].name;
11700 		if (drop_only)
11701 			histedit_cmd = "drop";
11702 		else if (edit_only)
11703 			histedit_cmd = "edit";
11704 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
11705 			histedit_cmd = "fold";
11706 		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
11707 		if (err)
11708 			break;
11709 		if (edit_logmsg_only) {
11710 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
11711 			if (n < 0) {
11712 				err = got_ferror(f, GOT_ERR_IO);
11713 				break;
11714 			}
11715 		}
11716 	}
11717 
11718 	return err;
11719 }
11720 
11721 static const struct got_error *
11722 write_cmd_list(FILE *f, const char *branch_name,
11723     struct got_object_id_queue *commits)
11724 {
11725 	const struct got_error *err = NULL;
11726 	size_t i;
11727 	int n;
11728 	char *id_str;
11729 	struct got_object_qid *qid;
11730 
11731 	qid = STAILQ_FIRST(commits);
11732 	err = got_object_id_str(&id_str, &qid->id);
11733 	if (err)
11734 		return err;
11735 
11736 	n = fprintf(f,
11737 	    "# Editing the history of branch '%s' starting at\n"
11738 	    "# commit %s\n"
11739 	    "# Commits will be processed in order from top to "
11740 	    "bottom of this file.\n", branch_name, id_str);
11741 	if (n < 0) {
11742 		err = got_ferror(f, GOT_ERR_IO);
11743 		goto done;
11744 	}
11745 
11746 	n = fprintf(f, "# Available histedit commands:\n");
11747 	if (n < 0) {
11748 		err = got_ferror(f, GOT_ERR_IO);
11749 		goto done;
11750 	}
11751 
11752 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
11753 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
11754 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
11755 		    cmd->desc);
11756 		if (n < 0) {
11757 			err = got_ferror(f, GOT_ERR_IO);
11758 			break;
11759 		}
11760 	}
11761 done:
11762 	free(id_str);
11763 	return err;
11764 }
11765 
11766 static const struct got_error *
11767 histedit_syntax_error(int lineno)
11768 {
11769 	static char msg[42];
11770 	int ret;
11771 
11772 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
11773 	    lineno);
11774 	if (ret < 0 || (size_t)ret >= sizeof(msg))
11775 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
11776 
11777 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
11778 }
11779 
11780 static const struct got_error *
11781 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
11782     char *logmsg, struct got_repository *repo)
11783 {
11784 	const struct got_error *err;
11785 	struct got_commit_object *folded_commit = NULL;
11786 	char *id_str, *folded_logmsg = NULL;
11787 
11788 	err = got_object_id_str(&id_str, hle->commit_id);
11789 	if (err)
11790 		return err;
11791 
11792 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
11793 	if (err)
11794 		goto done;
11795 
11796 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
11797 	if (err)
11798 		goto done;
11799 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
11800 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
11801 	    folded_logmsg) == -1) {
11802 		err = got_error_from_errno("asprintf");
11803 	}
11804 done:
11805 	if (folded_commit)
11806 		got_object_commit_close(folded_commit);
11807 	free(id_str);
11808 	free(folded_logmsg);
11809 	return err;
11810 }
11811 
11812 static struct got_histedit_list_entry *
11813 get_folded_commits(struct got_histedit_list_entry *hle)
11814 {
11815 	struct got_histedit_list_entry *prev, *folded = NULL;
11816 
11817 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
11818 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
11819 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
11820 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
11821 			folded = prev;
11822 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
11823 	}
11824 
11825 	return folded;
11826 }
11827 
11828 static const struct got_error *
11829 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
11830     struct got_repository *repo)
11831 {
11832 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
11833 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
11834 	const struct got_error *err = NULL;
11835 	struct got_commit_object *commit = NULL;
11836 	int logmsg_len;
11837 	int fd = -1;
11838 	struct got_histedit_list_entry *folded = NULL;
11839 
11840 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
11841 	if (err)
11842 		return err;
11843 
11844 	folded = get_folded_commits(hle);
11845 	if (folded) {
11846 		while (folded != hle) {
11847 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
11848 				folded = TAILQ_NEXT(folded, entry);
11849 				continue;
11850 			}
11851 			err = append_folded_commit_msg(&new_msg, folded,
11852 			    logmsg, repo);
11853 			if (err)
11854 				goto done;
11855 			free(logmsg);
11856 			logmsg = new_msg;
11857 			folded = TAILQ_NEXT(folded, entry);
11858 		}
11859 	}
11860 
11861 	err = got_object_id_str(&id_str, hle->commit_id);
11862 	if (err)
11863 		goto done;
11864 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
11865 	if (err)
11866 		goto done;
11867 	logmsg_len = asprintf(&new_msg,
11868 	    "%s\n# original log message of commit %s: %s",
11869 	    logmsg ? logmsg : "", id_str, orig_logmsg);
11870 	if (logmsg_len == -1) {
11871 		err = got_error_from_errno("asprintf");
11872 		goto done;
11873 	}
11874 	free(logmsg);
11875 	logmsg = new_msg;
11876 
11877 	err = got_object_id_str(&id_str, hle->commit_id);
11878 	if (err)
11879 		goto done;
11880 
11881 	err = got_opentemp_named_fd(&logmsg_path, &fd,
11882 	    GOT_TMPDIR_STR "/got-logmsg", "");
11883 	if (err)
11884 		goto done;
11885 
11886 	if (write(fd, logmsg, logmsg_len) == -1) {
11887 		err = got_error_from_errno2("write", logmsg_path);
11888 		goto done;
11889 	}
11890 	if (close(fd) == -1) {
11891 		err = got_error_from_errno2("close", logmsg_path);
11892 		goto done;
11893 	}
11894 	fd = -1;
11895 
11896 	err = get_editor(&editor);
11897 	if (err)
11898 		goto done;
11899 
11900 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
11901 	    logmsg_len, 0);
11902 	if (err) {
11903 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
11904 			goto done;
11905 		err = NULL;
11906 		hle->logmsg = strdup(new_msg);
11907 		if (hle->logmsg == NULL)
11908 			err = got_error_from_errno("strdup");
11909 	}
11910 done:
11911 	if (fd != -1 && close(fd) == -1 && err == NULL)
11912 		err = got_error_from_errno2("close", logmsg_path);
11913 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
11914 		err = got_error_from_errno2("unlink", logmsg_path);
11915 	free(logmsg_path);
11916 	free(logmsg);
11917 	free(orig_logmsg);
11918 	free(editor);
11919 	if (commit)
11920 		got_object_commit_close(commit);
11921 	return err;
11922 }
11923 
11924 static const struct got_error *
11925 histedit_parse_list(struct got_histedit_list *histedit_cmds,
11926     FILE *f, struct got_repository *repo)
11927 {
11928 	const struct got_error *err = NULL;
11929 	char *line = NULL, *p, *end;
11930 	size_t i, linesize = 0;
11931 	ssize_t linelen;
11932 	int lineno = 0, lastcmd = -1;
11933 	const struct got_histedit_cmd *cmd;
11934 	struct got_object_id *commit_id = NULL;
11935 	struct got_histedit_list_entry *hle = NULL;
11936 
11937 	for (;;) {
11938 		linelen = getline(&line, &linesize, f);
11939 		if (linelen == -1) {
11940 			const struct got_error *getline_err;
11941 			if (feof(f))
11942 				break;
11943 			getline_err = got_error_from_errno("getline");
11944 			err = got_ferror(f, getline_err->code);
11945 			break;
11946 		}
11947 		lineno++;
11948 		p = line;
11949 		while (isspace((unsigned char)p[0]))
11950 			p++;
11951 		if (p[0] == '#' || p[0] == '\0')
11952 			continue;
11953 		cmd = NULL;
11954 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
11955 			cmd = &got_histedit_cmds[i];
11956 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
11957 			    isspace((unsigned char)p[strlen(cmd->name)])) {
11958 				p += strlen(cmd->name);
11959 				break;
11960 			}
11961 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
11962 				p++;
11963 				break;
11964 			}
11965 		}
11966 		if (i == nitems(got_histedit_cmds)) {
11967 			err = histedit_syntax_error(lineno);
11968 			break;
11969 		}
11970 		while (isspace((unsigned char)p[0]))
11971 			p++;
11972 		if (cmd->code == GOT_HISTEDIT_MESG) {
11973 			if (lastcmd != GOT_HISTEDIT_PICK &&
11974 			    lastcmd != GOT_HISTEDIT_EDIT) {
11975 				err = got_error(GOT_ERR_HISTEDIT_CMD);
11976 				break;
11977 			}
11978 			if (p[0] == '\0') {
11979 				err = histedit_edit_logmsg(hle, repo);
11980 				if (err)
11981 					break;
11982 			} else {
11983 				hle->logmsg = strdup(p);
11984 				if (hle->logmsg == NULL) {
11985 					err = got_error_from_errno("strdup");
11986 					break;
11987 				}
11988 			}
11989 			lastcmd = cmd->code;
11990 			continue;
11991 		} else {
11992 			end = p;
11993 			while (end[0] && !isspace((unsigned char)end[0]))
11994 				end++;
11995 			*end = '\0';
11996 
11997 			err = got_object_resolve_id_str(&commit_id, repo, p);
11998 			if (err) {
11999 				/* override error code */
12000 				err = histedit_syntax_error(lineno);
12001 				break;
12002 			}
12003 		}
12004 		hle = malloc(sizeof(*hle));
12005 		if (hle == NULL) {
12006 			err = got_error_from_errno("malloc");
12007 			break;
12008 		}
12009 		hle->cmd = cmd;
12010 		hle->commit_id = commit_id;
12011 		hle->logmsg = NULL;
12012 		commit_id = NULL;
12013 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
12014 		lastcmd = cmd->code;
12015 	}
12016 
12017 	free(line);
12018 	free(commit_id);
12019 	return err;
12020 }
12021 
12022 static const struct got_error *
12023 histedit_check_script(struct got_histedit_list *histedit_cmds,
12024     struct got_object_id_queue *commits, struct got_repository *repo)
12025 {
12026 	const struct got_error *err = NULL;
12027 	struct got_object_qid *qid;
12028 	struct got_histedit_list_entry *hle;
12029 	static char msg[92];
12030 	char *id_str;
12031 
12032 	if (TAILQ_EMPTY(histedit_cmds))
12033 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
12034 		    "histedit script contains no commands");
12035 	if (STAILQ_EMPTY(commits))
12036 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
12037 
12038 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
12039 		struct got_histedit_list_entry *hle2;
12040 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
12041 			if (hle == hle2)
12042 				continue;
12043 			if (got_object_id_cmp(hle->commit_id,
12044 			    hle2->commit_id) != 0)
12045 				continue;
12046 			err = got_object_id_str(&id_str, hle->commit_id);
12047 			if (err)
12048 				return err;
12049 			snprintf(msg, sizeof(msg), "commit %s is listed "
12050 			    "more than once in histedit script", id_str);
12051 			free(id_str);
12052 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
12053 		}
12054 	}
12055 
12056 	STAILQ_FOREACH(qid, commits, entry) {
12057 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
12058 			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
12059 				break;
12060 		}
12061 		if (hle == NULL) {
12062 			err = got_object_id_str(&id_str, &qid->id);
12063 			if (err)
12064 				return err;
12065 			snprintf(msg, sizeof(msg),
12066 			    "commit %s missing from histedit script", id_str);
12067 			free(id_str);
12068 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
12069 		}
12070 	}
12071 
12072 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
12073 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
12074 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
12075 		    "last commit in histedit script cannot be folded");
12076 
12077 	return NULL;
12078 }
12079 
12080 static const struct got_error *
12081 histedit_run_editor(struct got_histedit_list *histedit_cmds,
12082     const char *path, struct got_object_id_queue *commits,
12083     struct got_repository *repo)
12084 {
12085 	const struct got_error *err = NULL;
12086 	struct stat st, st2;
12087 	struct timespec timeout;
12088 	char *editor;
12089 	FILE *f = NULL;
12090 
12091 	err = get_editor(&editor);
12092 	if (err)
12093 		return err;
12094 
12095 	if (stat(path, &st) == -1) {
12096 		err = got_error_from_errno2("stat", path);
12097 		goto done;
12098 	}
12099 
12100 	if (spawn_editor(editor, path) == -1) {
12101 		err = got_error_from_errno("failed spawning editor");
12102 		goto done;
12103 	}
12104 
12105 	timeout.tv_sec = 0;
12106 	timeout.tv_nsec = 1;
12107 	nanosleep(&timeout,  NULL);
12108 
12109 	if (stat(path, &st2) == -1) {
12110 		err = got_error_from_errno2("stat", path);
12111 		goto done;
12112 	}
12113 
12114 	if (st.st_size == st2.st_size &&
12115 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==)) {
12116 		err = got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
12117                     "no changes made to histedit script, aborting");
12118 		goto done;
12119 	}
12120 
12121 	f = fopen(path, "re");
12122 	if (f == NULL) {
12123 		err = got_error_from_errno("fopen");
12124 		goto done;
12125 	}
12126 	err = histedit_parse_list(histedit_cmds, f, repo);
12127 	if (err)
12128 		goto done;
12129 
12130 	err = histedit_check_script(histedit_cmds, commits, repo);
12131 done:
12132 	if (f && fclose(f) == EOF && err == NULL)
12133 		err = got_error_from_errno("fclose");
12134 	free(editor);
12135 	return err;
12136 }
12137 
12138 static const struct got_error *
12139 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
12140     struct got_object_id_queue *, const char *, const char *,
12141     struct got_repository *);
12142 
12143 static const struct got_error *
12144 histedit_edit_script(struct got_histedit_list *histedit_cmds,
12145     struct got_object_id_queue *commits, const char *branch_name,
12146     int edit_logmsg_only, int fold_only, int drop_only, int edit_only,
12147     struct got_repository *repo)
12148 {
12149 	const struct got_error *err;
12150 	FILE *f = NULL;
12151 	char *path = NULL;
12152 
12153 	err = got_opentemp_named(&path, &f, "got-histedit", "");
12154 	if (err)
12155 		return err;
12156 
12157 	err = write_cmd_list(f, branch_name, commits);
12158 	if (err)
12159 		goto done;
12160 
12161 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
12162 	    fold_only, drop_only, edit_only, repo);
12163 	if (err)
12164 		goto done;
12165 
12166 	if (drop_only || edit_logmsg_only || fold_only || edit_only) {
12167 		rewind(f);
12168 		err = histedit_parse_list(histedit_cmds, f, repo);
12169 	} else {
12170 		if (fclose(f) == EOF) {
12171 			err = got_error_from_errno("fclose");
12172 			goto done;
12173 		}
12174 		f = NULL;
12175 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
12176 		if (err) {
12177 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12178 			    err->code != GOT_ERR_HISTEDIT_CMD)
12179 				goto done;
12180 			err = histedit_edit_list_retry(histedit_cmds, err,
12181 			    commits, path, branch_name, repo);
12182 		}
12183 	}
12184 done:
12185 	if (f && fclose(f) == EOF && err == NULL)
12186 		err = got_error_from_errno("fclose");
12187 	if (path && unlink(path) != 0 && err == NULL)
12188 		err = got_error_from_errno2("unlink", path);
12189 	free(path);
12190 	return err;
12191 }
12192 
12193 static const struct got_error *
12194 histedit_save_list(struct got_histedit_list *histedit_cmds,
12195     struct got_worktree *worktree, struct got_repository *repo)
12196 {
12197 	const struct got_error *err = NULL;
12198 	char *path = NULL;
12199 	FILE *f = NULL;
12200 	struct got_histedit_list_entry *hle;
12201 	struct got_commit_object *commit = NULL;
12202 
12203 	err = got_worktree_get_histedit_script_path(&path, worktree);
12204 	if (err)
12205 		return err;
12206 
12207 	f = fopen(path, "we");
12208 	if (f == NULL) {
12209 		err = got_error_from_errno2("fopen", path);
12210 		goto done;
12211 	}
12212 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
12213 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
12214 		    repo);
12215 		if (err)
12216 			break;
12217 
12218 		if (hle->logmsg) {
12219 			int n = fprintf(f, "%c %s\n",
12220 			    GOT_HISTEDIT_MESG, hle->logmsg);
12221 			if (n < 0) {
12222 				err = got_ferror(f, GOT_ERR_IO);
12223 				break;
12224 			}
12225 		}
12226 	}
12227 done:
12228 	if (f && fclose(f) == EOF && err == NULL)
12229 		err = got_error_from_errno("fclose");
12230 	free(path);
12231 	if (commit)
12232 		got_object_commit_close(commit);
12233 	return err;
12234 }
12235 
12236 static void
12237 histedit_free_list(struct got_histedit_list *histedit_cmds)
12238 {
12239 	struct got_histedit_list_entry *hle;
12240 
12241 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
12242 		TAILQ_REMOVE(histedit_cmds, hle, entry);
12243 		free(hle);
12244 	}
12245 }
12246 
12247 static const struct got_error *
12248 histedit_load_list(struct got_histedit_list *histedit_cmds,
12249     const char *path, struct got_repository *repo)
12250 {
12251 	const struct got_error *err = NULL;
12252 	FILE *f = NULL;
12253 
12254 	f = fopen(path, "re");
12255 	if (f == NULL) {
12256 		err = got_error_from_errno2("fopen", path);
12257 		goto done;
12258 	}
12259 
12260 	err = histedit_parse_list(histedit_cmds, f, repo);
12261 done:
12262 	if (f && fclose(f) == EOF && err == NULL)
12263 		err = got_error_from_errno("fclose");
12264 	return err;
12265 }
12266 
12267 static const struct got_error *
12268 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
12269     const struct got_error *edit_err, struct got_object_id_queue *commits,
12270     const char *path, const char *branch_name, struct got_repository *repo)
12271 {
12272 	const struct got_error *err = NULL, *prev_err = edit_err;
12273 	int resp = ' ';
12274 
12275 	while (resp != 'c' && resp != 'r' && resp != 'a') {
12276 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
12277 		    "or (a)bort: ", getprogname(), prev_err->msg);
12278 		resp = getchar();
12279 		if (resp == '\n')
12280 			resp = getchar();
12281 		if (resp == 'c') {
12282 			histedit_free_list(histedit_cmds);
12283 			err = histedit_run_editor(histedit_cmds, path, commits,
12284 			    repo);
12285 			if (err) {
12286 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12287 				    err->code != GOT_ERR_HISTEDIT_CMD)
12288 					break;
12289 				prev_err = err;
12290 				resp = ' ';
12291 				continue;
12292 			}
12293 			break;
12294 		} else if (resp == 'r') {
12295 			histedit_free_list(histedit_cmds);
12296 			err = histedit_edit_script(histedit_cmds,
12297 			    commits, branch_name, 0, 0, 0, 0, repo);
12298 			if (err) {
12299 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12300 				    err->code != GOT_ERR_HISTEDIT_CMD)
12301 					break;
12302 				prev_err = err;
12303 				resp = ' ';
12304 				continue;
12305 			}
12306 			break;
12307 		} else if (resp == 'a') {
12308 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
12309 			break;
12310 		} else
12311 			printf("invalid response '%c'\n", resp);
12312 	}
12313 
12314 	return err;
12315 }
12316 
12317 static const struct got_error *
12318 histedit_complete(struct got_worktree *worktree,
12319     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
12320     struct got_reference *branch, struct got_repository *repo)
12321 {
12322 	printf("Switching work tree to %s\n",
12323 	    got_ref_get_symref_target(branch));
12324 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
12325 	    branch, repo);
12326 }
12327 
12328 static const struct got_error *
12329 show_histedit_progress(struct got_commit_object *commit,
12330     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
12331 {
12332 	const struct got_error *err;
12333 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
12334 
12335 	err = got_object_id_str(&old_id_str, hle->commit_id);
12336 	if (err)
12337 		goto done;
12338 
12339 	if (new_id) {
12340 		err = got_object_id_str(&new_id_str, new_id);
12341 		if (err)
12342 			goto done;
12343 	}
12344 
12345 	old_id_str[12] = '\0';
12346 	if (new_id_str)
12347 		new_id_str[12] = '\0';
12348 
12349 	if (hle->logmsg) {
12350 		logmsg = strdup(hle->logmsg);
12351 		if (logmsg == NULL) {
12352 			err = got_error_from_errno("strdup");
12353 			goto done;
12354 		}
12355 		trim_logmsg(logmsg, 42);
12356 	} else {
12357 		err = get_short_logmsg(&logmsg, 42, commit);
12358 		if (err)
12359 			goto done;
12360 	}
12361 
12362 	switch (hle->cmd->code) {
12363 	case GOT_HISTEDIT_PICK:
12364 	case GOT_HISTEDIT_EDIT:
12365 		printf("%s -> %s: %s\n", old_id_str,
12366 		    new_id_str ? new_id_str : "no-op change", logmsg);
12367 		break;
12368 	case GOT_HISTEDIT_DROP:
12369 	case GOT_HISTEDIT_FOLD:
12370 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
12371 		    logmsg);
12372 		break;
12373 	default:
12374 		break;
12375 	}
12376 done:
12377 	free(old_id_str);
12378 	free(new_id_str);
12379 	return err;
12380 }
12381 
12382 static const struct got_error *
12383 histedit_commit(struct got_pathlist_head *merged_paths,
12384     struct got_worktree *worktree, struct got_fileindex *fileindex,
12385     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
12386     const char *committer, int allow_conflict, struct got_repository *repo)
12387 {
12388 	const struct got_error *err;
12389 	struct got_commit_object *commit;
12390 	struct got_object_id *new_commit_id;
12391 
12392 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
12393 	    && hle->logmsg == NULL) {
12394 		err = histedit_edit_logmsg(hle, repo);
12395 		if (err)
12396 			return err;
12397 	}
12398 
12399 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
12400 	if (err)
12401 		return err;
12402 
12403 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
12404 	    worktree, fileindex, tmp_branch, committer, commit, hle->commit_id,
12405 	    hle->logmsg, allow_conflict, repo);
12406 	if (err) {
12407 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
12408 			goto done;
12409 		err = show_histedit_progress(commit, hle, NULL);
12410 	} else {
12411 		err = show_histedit_progress(commit, hle, new_commit_id);
12412 		free(new_commit_id);
12413 	}
12414 done:
12415 	got_object_commit_close(commit);
12416 	return err;
12417 }
12418 
12419 static const struct got_error *
12420 histedit_skip_commit(struct got_histedit_list_entry *hle,
12421     struct got_worktree *worktree, struct got_repository *repo)
12422 {
12423 	const struct got_error *error;
12424 	struct got_commit_object *commit;
12425 
12426 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
12427 	    repo);
12428 	if (error)
12429 		return error;
12430 
12431 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
12432 	if (error)
12433 		return error;
12434 
12435 	error = show_histedit_progress(commit, hle, NULL);
12436 	got_object_commit_close(commit);
12437 	return error;
12438 }
12439 
12440 static const struct got_error *
12441 check_local_changes(void *arg, unsigned char status,
12442     unsigned char staged_status, const char *path,
12443     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
12444     struct got_object_id *commit_id, int dirfd, const char *de_name)
12445 {
12446 	int *have_local_changes = arg;
12447 
12448 	switch (status) {
12449 	case GOT_STATUS_ADD:
12450 	case GOT_STATUS_DELETE:
12451 	case GOT_STATUS_MODIFY:
12452 	case GOT_STATUS_CONFLICT:
12453 		*have_local_changes = 1;
12454 		return got_error(GOT_ERR_CANCELLED);
12455 	default:
12456 		break;
12457 	}
12458 
12459 	switch (staged_status) {
12460 	case GOT_STATUS_ADD:
12461 	case GOT_STATUS_DELETE:
12462 	case GOT_STATUS_MODIFY:
12463 		*have_local_changes = 1;
12464 		return got_error(GOT_ERR_CANCELLED);
12465 	default:
12466 		break;
12467 	}
12468 
12469 	return NULL;
12470 }
12471 
12472 static const struct got_error *
12473 cmd_histedit(int argc, char *argv[])
12474 {
12475 	const struct got_error *error = NULL;
12476 	struct got_worktree *worktree = NULL;
12477 	struct got_fileindex *fileindex = NULL;
12478 	struct got_repository *repo = NULL;
12479 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
12480 	struct got_reference *branch = NULL;
12481 	struct got_reference *tmp_branch = NULL;
12482 	struct got_object_id *resume_commit_id = NULL;
12483 	struct got_object_id *base_commit_id = NULL;
12484 	struct got_object_id *head_commit_id = NULL;
12485 	struct got_commit_object *commit = NULL;
12486 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
12487 	struct got_update_progress_arg upa;
12488 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
12489 	int drop_only = 0, edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
12490 	int allow_conflict = 0, list_backups = 0, delete_backups = 0;
12491 	const char *edit_script_path = NULL;
12492 	struct got_object_id_queue commits;
12493 	struct got_pathlist_head merged_paths;
12494 	const struct got_object_id_queue *parent_ids;
12495 	struct got_object_qid *pid;
12496 	struct got_histedit_list histedit_cmds;
12497 	struct got_histedit_list_entry *hle;
12498 	int *pack_fds = NULL;
12499 
12500 	STAILQ_INIT(&commits);
12501 	TAILQ_INIT(&histedit_cmds);
12502 	TAILQ_INIT(&merged_paths);
12503 	memset(&upa, 0, sizeof(upa));
12504 
12505 #ifndef PROFILE
12506 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12507 	    "unveil", NULL) == -1)
12508 		err(1, "pledge");
12509 #endif
12510 
12511 	while ((ch = getopt(argc, argv, "aCcdeF:flmX")) != -1) {
12512 		switch (ch) {
12513 		case 'a':
12514 			abort_edit = 1;
12515 			break;
12516 		case 'C':
12517 			allow_conflict = 1;
12518 			break;
12519 		case 'c':
12520 			continue_edit = 1;
12521 			break;
12522 		case 'd':
12523 			drop_only = 1;
12524 			break;
12525 		case 'e':
12526 			edit_only = 1;
12527 			break;
12528 		case 'F':
12529 			edit_script_path = optarg;
12530 			break;
12531 		case 'f':
12532 			fold_only = 1;
12533 			break;
12534 		case 'l':
12535 			list_backups = 1;
12536 			break;
12537 		case 'm':
12538 			edit_logmsg_only = 1;
12539 			break;
12540 		case 'X':
12541 			delete_backups = 1;
12542 			break;
12543 		default:
12544 			usage_histedit();
12545 			/* NOTREACHED */
12546 		}
12547 	}
12548 
12549 	argc -= optind;
12550 	argv += optind;
12551 
12552 	if (abort_edit && allow_conflict)
12553 		option_conflict('a', 'C');
12554 	if (abort_edit && continue_edit)
12555 		option_conflict('a', 'c');
12556 	if (edit_script_path && allow_conflict)
12557 		option_conflict('F', 'C');
12558 	if (edit_script_path && edit_logmsg_only)
12559 		option_conflict('F', 'm');
12560 	if (abort_edit && edit_logmsg_only)
12561 		option_conflict('a', 'm');
12562 	if (edit_logmsg_only && allow_conflict)
12563 		option_conflict('m', 'C');
12564 	if (continue_edit && edit_logmsg_only)
12565 		option_conflict('c', 'm');
12566 	if (abort_edit && fold_only)
12567 		option_conflict('a', 'f');
12568 	if (fold_only && allow_conflict)
12569 		option_conflict('f', 'C');
12570 	if (continue_edit && fold_only)
12571 		option_conflict('c', 'f');
12572 	if (fold_only && edit_logmsg_only)
12573 		option_conflict('f', 'm');
12574 	if (edit_script_path && fold_only)
12575 		option_conflict('F', 'f');
12576 	if (abort_edit && edit_only)
12577 		option_conflict('a', 'e');
12578 	if (continue_edit && edit_only)
12579 		option_conflict('c', 'e');
12580 	if (edit_only && edit_logmsg_only)
12581 		option_conflict('e', 'm');
12582 	if (edit_script_path && edit_only)
12583 		option_conflict('F', 'e');
12584 	if (fold_only && edit_only)
12585 		option_conflict('f', 'e');
12586 	if (drop_only && abort_edit)
12587 		option_conflict('d', 'a');
12588 	if (drop_only && allow_conflict)
12589 		option_conflict('d', 'C');
12590 	if (drop_only && continue_edit)
12591 		option_conflict('d', 'c');
12592 	if (drop_only && edit_logmsg_only)
12593 		option_conflict('d', 'm');
12594 	if (drop_only && edit_only)
12595 		option_conflict('d', 'e');
12596 	if (drop_only && edit_script_path)
12597 		option_conflict('d', 'F');
12598 	if (drop_only && fold_only)
12599 		option_conflict('d', 'f');
12600 	if (list_backups) {
12601 		if (abort_edit)
12602 			option_conflict('l', 'a');
12603 		if (allow_conflict)
12604 			option_conflict('l', 'C');
12605 		if (continue_edit)
12606 			option_conflict('l', 'c');
12607 		if (edit_script_path)
12608 			option_conflict('l', 'F');
12609 		if (edit_logmsg_only)
12610 			option_conflict('l', 'm');
12611 		if (drop_only)
12612 			option_conflict('l', 'd');
12613 		if (fold_only)
12614 			option_conflict('l', 'f');
12615 		if (edit_only)
12616 			option_conflict('l', 'e');
12617 		if (delete_backups)
12618 			option_conflict('l', 'X');
12619 		if (argc != 0 && argc != 1)
12620 			usage_histedit();
12621 	} else if (delete_backups) {
12622 		if (abort_edit)
12623 			option_conflict('X', 'a');
12624 		if (allow_conflict)
12625 			option_conflict('X', 'C');
12626 		if (continue_edit)
12627 			option_conflict('X', 'c');
12628 		if (drop_only)
12629 			option_conflict('X', 'd');
12630 		if (edit_script_path)
12631 			option_conflict('X', 'F');
12632 		if (edit_logmsg_only)
12633 			option_conflict('X', 'm');
12634 		if (fold_only)
12635 			option_conflict('X', 'f');
12636 		if (edit_only)
12637 			option_conflict('X', 'e');
12638 		if (list_backups)
12639 			option_conflict('X', 'l');
12640 		if (argc != 0 && argc != 1)
12641 			usage_histedit();
12642 	} else if (allow_conflict && !continue_edit)
12643 		errx(1, "-C option requires -c");
12644 	else if (argc != 0)
12645 		usage_histedit();
12646 
12647 	/*
12648 	 * This command cannot apply unveil(2) in all cases because the
12649 	 * user may choose to run an editor to edit the histedit script
12650 	 * and to edit individual commit log messages.
12651 	 * unveil(2) traverses exec(2); if an editor is used we have to
12652 	 * apply unveil after edit script and log messages have been written.
12653 	 * XXX TODO: Make use of unveil(2) where possible.
12654 	 */
12655 
12656 	cwd = getcwd(NULL, 0);
12657 	if (cwd == NULL) {
12658 		error = got_error_from_errno("getcwd");
12659 		goto done;
12660 	}
12661 
12662 	error = got_repo_pack_fds_open(&pack_fds);
12663 	if (error != NULL)
12664 		goto done;
12665 
12666 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
12667 	if (error) {
12668 		if (list_backups || delete_backups) {
12669 			if (error->code != GOT_ERR_NOT_WORKTREE)
12670 				goto done;
12671 		} else {
12672 			if (error->code == GOT_ERR_NOT_WORKTREE)
12673 				error = wrap_not_worktree_error(error,
12674 				    "histedit", cwd);
12675 			goto done;
12676 		}
12677 	}
12678 
12679 	if (list_backups || delete_backups) {
12680 		error = got_repo_open(&repo,
12681 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
12682 		    NULL, pack_fds);
12683 		if (error != NULL)
12684 			goto done;
12685 		error = apply_unveil(got_repo_get_path(repo), 0,
12686 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
12687 		if (error)
12688 			goto done;
12689 		error = process_backup_refs(
12690 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
12691 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
12692 		goto done; /* nothing else to do */
12693 	}
12694 
12695 	error = get_gitconfig_path(&gitconfig_path);
12696 	if (error)
12697 		goto done;
12698 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12699 	    gitconfig_path, pack_fds);
12700 	if (error != NULL)
12701 		goto done;
12702 
12703 	if (worktree != NULL && !list_backups && !delete_backups) {
12704 		error = worktree_has_logmsg_ref("histedit", worktree, repo);
12705 		if (error)
12706 			goto done;
12707 	}
12708 
12709 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
12710 	if (error)
12711 		goto done;
12712 	if (rebase_in_progress) {
12713 		error = got_error(GOT_ERR_REBASING);
12714 		goto done;
12715 	}
12716 
12717 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
12718 	    repo);
12719 	if (error)
12720 		goto done;
12721 	if (merge_in_progress) {
12722 		error = got_error(GOT_ERR_MERGE_BUSY);
12723 		goto done;
12724 	}
12725 
12726 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
12727 	if (error)
12728 		goto done;
12729 
12730 	if (edit_in_progress && edit_logmsg_only) {
12731 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12732 		    "histedit operation is in progress in this "
12733 		    "work tree and must be continued or aborted "
12734 		    "before the -m option can be used");
12735 		goto done;
12736 	}
12737 	if (edit_in_progress && drop_only) {
12738 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12739 		    "histedit operation is in progress in this "
12740 		    "work tree and must be continued or aborted "
12741 		    "before the -d option can be used");
12742 		goto done;
12743 	}
12744 	if (edit_in_progress && fold_only) {
12745 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12746 		    "histedit operation is in progress in this "
12747 		    "work tree and must be continued or aborted "
12748 		    "before the -f option can be used");
12749 		goto done;
12750 	}
12751 	if (edit_in_progress && edit_only) {
12752 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12753 		    "histedit operation is in progress in this "
12754 		    "work tree and must be continued or aborted "
12755 		    "before the -e option can be used");
12756 		goto done;
12757 	}
12758 
12759 	if (edit_in_progress && abort_edit) {
12760 		error = got_worktree_histedit_continue(&resume_commit_id,
12761 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12762 		    worktree, repo);
12763 		if (error)
12764 			goto done;
12765 		printf("Switching work tree to %s\n",
12766 		    got_ref_get_symref_target(branch));
12767 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
12768 		    branch, base_commit_id, abort_progress, &upa);
12769 		if (error)
12770 			goto done;
12771 		printf("Histedit of %s aborted\n",
12772 		    got_ref_get_symref_target(branch));
12773 		print_merge_progress_stats(&upa);
12774 		goto done; /* nothing else to do */
12775 	} else if (abort_edit) {
12776 		error = got_error(GOT_ERR_NOT_HISTEDIT);
12777 		goto done;
12778 	}
12779 
12780 	error = get_author(&committer, repo, worktree);
12781 	if (error)
12782 		goto done;
12783 
12784 	if (continue_edit) {
12785 		char *path;
12786 
12787 		if (!edit_in_progress) {
12788 			error = got_error(GOT_ERR_NOT_HISTEDIT);
12789 			goto done;
12790 		}
12791 
12792 		error = got_worktree_get_histedit_script_path(&path, worktree);
12793 		if (error)
12794 			goto done;
12795 
12796 		error = histedit_load_list(&histedit_cmds, path, repo);
12797 		free(path);
12798 		if (error)
12799 			goto done;
12800 
12801 		error = got_worktree_histedit_continue(&resume_commit_id,
12802 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12803 		    worktree, repo);
12804 		if (error)
12805 			goto done;
12806 
12807 		error = got_ref_resolve(&head_commit_id, repo, branch);
12808 		if (error)
12809 			goto done;
12810 
12811 		error = got_object_open_as_commit(&commit, repo,
12812 		    head_commit_id);
12813 		if (error)
12814 			goto done;
12815 		parent_ids = got_object_commit_get_parent_ids(commit);
12816 		pid = STAILQ_FIRST(parent_ids);
12817 		if (pid == NULL) {
12818 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12819 			goto done;
12820 		}
12821 		error = collect_commits(&commits, head_commit_id, &pid->id,
12822 		    base_commit_id, got_worktree_get_path_prefix(worktree),
12823 		    GOT_ERR_HISTEDIT_PATH, repo);
12824 		got_object_commit_close(commit);
12825 		commit = NULL;
12826 		if (error)
12827 			goto done;
12828 	} else {
12829 		if (edit_in_progress) {
12830 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
12831 			goto done;
12832 		}
12833 
12834 		error = got_ref_open(&branch, repo,
12835 		    got_worktree_get_head_ref_name(worktree), 0);
12836 		if (error != NULL)
12837 			goto done;
12838 
12839 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
12840 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
12841 			    "will not edit commit history of a branch outside "
12842 			    "the \"refs/heads/\" reference namespace");
12843 			goto done;
12844 		}
12845 
12846 		error = got_ref_resolve(&head_commit_id, repo, branch);
12847 		got_ref_close(branch);
12848 		branch = NULL;
12849 		if (error)
12850 			goto done;
12851 
12852 		error = got_object_open_as_commit(&commit, repo,
12853 		    head_commit_id);
12854 		if (error)
12855 			goto done;
12856 		parent_ids = got_object_commit_get_parent_ids(commit);
12857 		pid = STAILQ_FIRST(parent_ids);
12858 		if (pid == NULL) {
12859 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12860 			goto done;
12861 		}
12862 		error = collect_commits(&commits, head_commit_id, &pid->id,
12863 		    got_worktree_get_base_commit_id(worktree),
12864 		    got_worktree_get_path_prefix(worktree),
12865 		    GOT_ERR_HISTEDIT_PATH, repo);
12866 		got_object_commit_close(commit);
12867 		commit = NULL;
12868 		if (error)
12869 			goto done;
12870 
12871 		if (STAILQ_EMPTY(&commits)) {
12872 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12873 			goto done;
12874 		}
12875 
12876 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
12877 		    &base_commit_id, &fileindex, worktree, repo);
12878 		if (error)
12879 			goto done;
12880 
12881 		if (edit_script_path) {
12882 			error = histedit_load_list(&histedit_cmds,
12883 			    edit_script_path, repo);
12884 			if (error) {
12885 				got_worktree_histedit_abort(worktree, fileindex,
12886 				    repo, branch, base_commit_id,
12887 				    abort_progress, &upa);
12888 				print_merge_progress_stats(&upa);
12889 				goto done;
12890 			}
12891 		} else {
12892 			const char *branch_name;
12893 			branch_name = got_ref_get_symref_target(branch);
12894 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
12895 				branch_name += 11;
12896 			error = histedit_edit_script(&histedit_cmds, &commits,
12897 			    branch_name, edit_logmsg_only, fold_only,
12898 			    drop_only, edit_only, repo);
12899 			if (error) {
12900 				got_worktree_histedit_abort(worktree, fileindex,
12901 				    repo, branch, base_commit_id,
12902 				    abort_progress, &upa);
12903 				print_merge_progress_stats(&upa);
12904 				goto done;
12905 			}
12906 
12907 		}
12908 
12909 		error = histedit_save_list(&histedit_cmds, worktree,
12910 		    repo);
12911 		if (error) {
12912 			got_worktree_histedit_abort(worktree, fileindex,
12913 			    repo, branch, base_commit_id,
12914 			    abort_progress, &upa);
12915 			print_merge_progress_stats(&upa);
12916 			goto done;
12917 		}
12918 
12919 	}
12920 
12921 	error = histedit_check_script(&histedit_cmds, &commits, repo);
12922 	if (error)
12923 		goto done;
12924 
12925 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
12926 		if (resume_commit_id) {
12927 			if (got_object_id_cmp(hle->commit_id,
12928 			    resume_commit_id) != 0)
12929 				continue;
12930 
12931 			resume_commit_id = NULL;
12932 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
12933 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
12934 				error = histedit_skip_commit(hle, worktree,
12935 				    repo);
12936 				if (error)
12937 					goto done;
12938 			} else {
12939 				struct got_pathlist_head paths;
12940 				int have_changes = 0;
12941 
12942 				TAILQ_INIT(&paths);
12943 				error = got_pathlist_append(&paths, "", NULL);
12944 				if (error)
12945 					goto done;
12946 				error = got_worktree_status(worktree, &paths,
12947 				    repo, 0, check_local_changes, &have_changes,
12948 				    check_cancelled, NULL);
12949 				got_pathlist_free(&paths,
12950 				    GOT_PATHLIST_FREE_NONE);
12951 				if (error) {
12952 					if (error->code != GOT_ERR_CANCELLED)
12953 						goto done;
12954 					if (sigint_received || sigpipe_received)
12955 						goto done;
12956 				}
12957 				if (have_changes) {
12958 					error = histedit_commit(NULL, worktree,
12959 					    fileindex, tmp_branch, hle,
12960 					    committer, allow_conflict, repo);
12961 					if (error)
12962 						goto done;
12963 				} else {
12964 					error = got_object_open_as_commit(
12965 					    &commit, repo, hle->commit_id);
12966 					if (error)
12967 						goto done;
12968 					error = show_histedit_progress(commit,
12969 					    hle, NULL);
12970 					got_object_commit_close(commit);
12971 					commit = NULL;
12972 					if (error)
12973 						goto done;
12974 				}
12975 			}
12976 			continue;
12977 		}
12978 
12979 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
12980 			error = histedit_skip_commit(hle, worktree, repo);
12981 			if (error)
12982 				goto done;
12983 			continue;
12984 		}
12985 
12986 		error = got_object_open_as_commit(&commit, repo,
12987 		    hle->commit_id);
12988 		if (error)
12989 			goto done;
12990 		parent_ids = got_object_commit_get_parent_ids(commit);
12991 		pid = STAILQ_FIRST(parent_ids);
12992 
12993 		error = got_worktree_histedit_merge_files(&merged_paths,
12994 		    worktree, fileindex, &pid->id, hle->commit_id, repo,
12995 		    update_progress, &upa, check_cancelled, NULL);
12996 		if (error)
12997 			goto done;
12998 		got_object_commit_close(commit);
12999 		commit = NULL;
13000 
13001 		print_merge_progress_stats(&upa);
13002 		if (upa.conflicts > 0 || upa.missing > 0 ||
13003 		    upa.not_deleted > 0 || upa.unversioned > 0) {
13004 			if (upa.conflicts > 0) {
13005 				error = show_rebase_merge_conflict(
13006 				    hle->commit_id, repo);
13007 				if (error)
13008 					goto done;
13009 			}
13010 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
13011 			break;
13012 		}
13013 
13014 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
13015 			char *id_str;
13016 			error = got_object_id_str(&id_str, hle->commit_id);
13017 			if (error)
13018 				goto done;
13019 			printf("Stopping histedit for amending commit %s\n",
13020 			    id_str);
13021 			free(id_str);
13022 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
13023 			error = got_worktree_histedit_postpone(worktree,
13024 			    fileindex);
13025 			goto done;
13026 		}
13027 
13028 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
13029 			error = histedit_skip_commit(hle, worktree, repo);
13030 			if (error)
13031 				goto done;
13032 			continue;
13033 		}
13034 
13035 		error = histedit_commit(&merged_paths, worktree, fileindex,
13036 		    tmp_branch, hle, committer, allow_conflict, repo);
13037 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
13038 		if (error)
13039 			goto done;
13040 	}
13041 
13042 	if (upa.conflicts > 0 || upa.missing > 0 ||
13043 	    upa.not_deleted > 0 || upa.unversioned > 0) {
13044 		error = got_worktree_histedit_postpone(worktree, fileindex);
13045 		if (error)
13046 			goto done;
13047 		if (upa.conflicts > 0 && upa.missing == 0 &&
13048 		    upa.not_deleted == 0 && upa.unversioned == 0) {
13049 			error = got_error_msg(GOT_ERR_CONFLICTS,
13050 			    "conflicts must be resolved before histedit "
13051 			    "can continue");
13052 		} else if (upa.conflicts > 0) {
13053 			error = got_error_msg(GOT_ERR_CONFLICTS,
13054 			    "conflicts must be resolved before histedit "
13055 			    "can continue; changes destined for some "
13056 			    "files were not yet merged and should be "
13057 			    "merged manually if required before the "
13058 			    "histedit operation is continued");
13059 		} else {
13060 			error = got_error_msg(GOT_ERR_CONFLICTS,
13061 			    "changes destined for some files were not "
13062 			    "yet merged and should be merged manually "
13063 			    "if required before the histedit operation "
13064 			    "is continued");
13065 		}
13066 	} else
13067 		error = histedit_complete(worktree, fileindex, tmp_branch,
13068 		    branch, repo);
13069 done:
13070 	free(cwd);
13071 	free(committer);
13072 	free(gitconfig_path);
13073 	got_object_id_queue_free(&commits);
13074 	histedit_free_list(&histedit_cmds);
13075 	free(head_commit_id);
13076 	free(base_commit_id);
13077 	free(resume_commit_id);
13078 	if (commit)
13079 		got_object_commit_close(commit);
13080 	if (branch)
13081 		got_ref_close(branch);
13082 	if (tmp_branch)
13083 		got_ref_close(tmp_branch);
13084 	if (worktree)
13085 		got_worktree_close(worktree);
13086 	if (repo) {
13087 		const struct got_error *close_err = got_repo_close(repo);
13088 		if (error == NULL)
13089 			error = close_err;
13090 	}
13091 	if (pack_fds) {
13092 		const struct got_error *pack_err =
13093 		    got_repo_pack_fds_close(pack_fds);
13094 		if (error == NULL)
13095 			error = pack_err;
13096 	}
13097 	return error;
13098 }
13099 
13100 __dead static void
13101 usage_integrate(void)
13102 {
13103 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
13104 	exit(1);
13105 }
13106 
13107 static const struct got_error *
13108 cmd_integrate(int argc, char *argv[])
13109 {
13110 	const struct got_error *error = NULL;
13111 	struct got_repository *repo = NULL;
13112 	struct got_worktree *worktree = NULL;
13113 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
13114 	const char *branch_arg = NULL;
13115 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
13116 	struct got_fileindex *fileindex = NULL;
13117 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
13118 	int ch;
13119 	struct got_update_progress_arg upa;
13120 	int *pack_fds = NULL;
13121 
13122 #ifndef PROFILE
13123 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13124 	    "unveil", NULL) == -1)
13125 		err(1, "pledge");
13126 #endif
13127 
13128 	while ((ch = getopt(argc, argv, "")) != -1) {
13129 		switch (ch) {
13130 		default:
13131 			usage_integrate();
13132 			/* NOTREACHED */
13133 		}
13134 	}
13135 
13136 	argc -= optind;
13137 	argv += optind;
13138 
13139 	if (argc != 1)
13140 		usage_integrate();
13141 	branch_arg = argv[0];
13142 
13143 	cwd = getcwd(NULL, 0);
13144 	if (cwd == NULL) {
13145 		error = got_error_from_errno("getcwd");
13146 		goto done;
13147 	}
13148 
13149 	error = got_repo_pack_fds_open(&pack_fds);
13150 	if (error != NULL)
13151 		goto done;
13152 
13153 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
13154 	if (error) {
13155 		if (error->code == GOT_ERR_NOT_WORKTREE)
13156 			error = wrap_not_worktree_error(error, "integrate",
13157 			    cwd);
13158 		goto done;
13159 	}
13160 
13161 	error = check_rebase_or_histedit_in_progress(worktree);
13162 	if (error)
13163 		goto done;
13164 
13165 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13166 	    NULL, pack_fds);
13167 	if (error != NULL)
13168 		goto done;
13169 
13170 	error = apply_unveil(got_repo_get_path(repo), 0,
13171 	    got_worktree_get_root_path(worktree));
13172 	if (error)
13173 		goto done;
13174 
13175 	error = check_merge_in_progress(worktree, repo);
13176 	if (error)
13177 		goto done;
13178 
13179 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
13180 		error = got_error_from_errno("asprintf");
13181 		goto done;
13182 	}
13183 
13184 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
13185 	    &base_branch_ref, worktree, refname, repo);
13186 	if (error)
13187 		goto done;
13188 
13189 	refname = strdup(got_ref_get_name(branch_ref));
13190 	if (refname == NULL) {
13191 		error = got_error_from_errno("strdup");
13192 		got_worktree_integrate_abort(worktree, fileindex, repo,
13193 		    branch_ref, base_branch_ref);
13194 		goto done;
13195 	}
13196 	base_refname = strdup(got_ref_get_name(base_branch_ref));
13197 	if (base_refname == NULL) {
13198 		error = got_error_from_errno("strdup");
13199 		got_worktree_integrate_abort(worktree, fileindex, repo,
13200 		    branch_ref, base_branch_ref);
13201 		goto done;
13202 	}
13203 	if (strncmp(base_refname, "refs/heads/", 11) != 0) {
13204 		error = got_error(GOT_ERR_INTEGRATE_BRANCH);
13205 		got_worktree_integrate_abort(worktree, fileindex, repo,
13206 		    branch_ref, base_branch_ref);
13207 		goto done;
13208 	}
13209 
13210 	error = got_ref_resolve(&commit_id, repo, branch_ref);
13211 	if (error)
13212 		goto done;
13213 
13214 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
13215 	if (error)
13216 		goto done;
13217 
13218 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
13219 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
13220 		    "specified branch has already been integrated");
13221 		got_worktree_integrate_abort(worktree, fileindex, repo,
13222 		    branch_ref, base_branch_ref);
13223 		goto done;
13224 	}
13225 
13226 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
13227 	if (error) {
13228 		if (error->code == GOT_ERR_ANCESTRY)
13229 			error = got_error(GOT_ERR_REBASE_REQUIRED);
13230 		got_worktree_integrate_abort(worktree, fileindex, repo,
13231 		    branch_ref, base_branch_ref);
13232 		goto done;
13233 	}
13234 
13235 	memset(&upa, 0, sizeof(upa));
13236 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
13237 	    branch_ref, base_branch_ref, update_progress, &upa,
13238 	    check_cancelled, NULL);
13239 	if (error)
13240 		goto done;
13241 
13242 	printf("Integrated %s into %s\n", refname, base_refname);
13243 	print_update_progress_stats(&upa);
13244 done:
13245 	if (repo) {
13246 		const struct got_error *close_err = got_repo_close(repo);
13247 		if (error == NULL)
13248 			error = close_err;
13249 	}
13250 	if (worktree)
13251 		got_worktree_close(worktree);
13252 	if (pack_fds) {
13253 		const struct got_error *pack_err =
13254 		    got_repo_pack_fds_close(pack_fds);
13255 		if (error == NULL)
13256 			error = pack_err;
13257 	}
13258 	free(cwd);
13259 	free(base_commit_id);
13260 	free(commit_id);
13261 	free(refname);
13262 	free(base_refname);
13263 	return error;
13264 }
13265 
13266 __dead static void
13267 usage_merge(void)
13268 {
13269 	fprintf(stderr, "usage: %s merge [-aCcn] [branch]\n", getprogname());
13270 	exit(1);
13271 }
13272 
13273 static const struct got_error *
13274 cmd_merge(int argc, char *argv[])
13275 {
13276 	const struct got_error *error = NULL;
13277 	struct got_worktree *worktree = NULL;
13278 	struct got_repository *repo = NULL;
13279 	struct got_fileindex *fileindex = NULL;
13280 	char *cwd = NULL, *id_str = NULL, *author = NULL;
13281 	char *gitconfig_path = NULL;
13282 	struct got_reference *branch = NULL, *wt_branch = NULL;
13283 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
13284 	struct got_object_id *wt_branch_tip = NULL;
13285 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
13286 	int allow_conflict = 0, prefer_fast_forward = 1, interrupt_merge = 0;
13287 	struct got_update_progress_arg upa;
13288 	struct got_object_id *merge_commit_id = NULL;
13289 	char *branch_name = NULL;
13290 	int *pack_fds = NULL;
13291 
13292 	memset(&upa, 0, sizeof(upa));
13293 
13294 #ifndef PROFILE
13295 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13296 	    "unveil", NULL) == -1)
13297 		err(1, "pledge");
13298 #endif
13299 
13300 	while ((ch = getopt(argc, argv, "aCcMn")) != -1) {
13301 		switch (ch) {
13302 		case 'a':
13303 			abort_merge = 1;
13304 			break;
13305 		case 'C':
13306 			allow_conflict = 1;
13307 			break;
13308 		case 'c':
13309 			continue_merge = 1;
13310 			break;
13311 		case 'M':
13312 			prefer_fast_forward = 0;
13313 			break;
13314 		case 'n':
13315 			interrupt_merge = 1;
13316 			break;
13317 		default:
13318 			usage_merge();
13319 			/* NOTREACHED */
13320 		}
13321 	}
13322 
13323 	argc -= optind;
13324 	argv += optind;
13325 
13326 	if (abort_merge) {
13327 		if (continue_merge)
13328 			option_conflict('a', 'c');
13329 		if (!prefer_fast_forward)
13330 			option_conflict('a', 'M');
13331 		if (interrupt_merge)
13332 			option_conflict('a', 'n');
13333 	} else if (continue_merge) {
13334 		if (!prefer_fast_forward)
13335 			option_conflict('c', 'M');
13336 		if (interrupt_merge)
13337 			option_conflict('c', 'n');
13338 	}
13339 	if (allow_conflict) {
13340 		if (!continue_merge)
13341 			errx(1, "-C option requires -c");
13342 	}
13343 	if (abort_merge || continue_merge) {
13344 		if (argc != 0)
13345 			usage_merge();
13346 	} else if (argc != 1)
13347 		usage_merge();
13348 
13349 	cwd = getcwd(NULL, 0);
13350 	if (cwd == NULL) {
13351 		error = got_error_from_errno("getcwd");
13352 		goto done;
13353 	}
13354 
13355 	error = got_repo_pack_fds_open(&pack_fds);
13356 	if (error != NULL)
13357 		goto done;
13358 
13359 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
13360 	if (error) {
13361 		if (error->code == GOT_ERR_NOT_WORKTREE)
13362 			error = wrap_not_worktree_error(error,
13363 			    "merge", cwd);
13364 		goto done;
13365 	}
13366 
13367 	error = get_gitconfig_path(&gitconfig_path);
13368 	if (error)
13369 		goto done;
13370 	error = got_repo_open(&repo,
13371 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
13372 	    gitconfig_path, pack_fds);
13373 	if (error != NULL)
13374 		goto done;
13375 
13376 	if (worktree != NULL) {
13377 		error = worktree_has_logmsg_ref("merge", worktree, repo);
13378 		if (error)
13379 			goto done;
13380 	}
13381 
13382 	error = apply_unveil(got_repo_get_path(repo), 0,
13383 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
13384 	if (error)
13385 		goto done;
13386 
13387 	error = check_rebase_or_histedit_in_progress(worktree);
13388 	if (error)
13389 		goto done;
13390 
13391 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
13392 	    repo);
13393 	if (error)
13394 		goto done;
13395 
13396 	if (merge_in_progress && !(abort_merge || continue_merge)) {
13397 		error = got_error(GOT_ERR_MERGE_BUSY);
13398 		goto done;
13399 	}
13400 
13401 	if (!merge_in_progress && (abort_merge || continue_merge)) {
13402 		error = got_error(GOT_ERR_NOT_MERGING);
13403 		goto done;
13404 	}
13405 
13406 	if (abort_merge) {
13407 		error = got_worktree_merge_continue(&branch_name,
13408 		    &branch_tip, &fileindex, worktree, repo);
13409 		if (error)
13410 			goto done;
13411 		error = got_worktree_merge_abort(worktree, fileindex, repo,
13412 		    abort_progress, &upa);
13413 		if (error)
13414 			goto done;
13415 		printf("Merge of %s aborted\n", branch_name);
13416 		goto done; /* nothing else to do */
13417 	}
13418 
13419 	if (strncmp(got_worktree_get_head_ref_name(worktree),
13420 	    "refs/heads/", 11) != 0) {
13421 		error = got_error_fmt(GOT_ERR_COMMIT_BRANCH,
13422 		    "work tree's current branch %s is outside the "
13423 		    "\"refs/heads/\" reference namespace; "
13424 		    "update -b required",
13425 		    got_worktree_get_head_ref_name(worktree));
13426 		goto done;
13427 	}
13428 
13429 	error = get_author(&author, repo, worktree);
13430 	if (error)
13431 		goto done;
13432 
13433 	error = got_ref_open(&wt_branch, repo,
13434 	    got_worktree_get_head_ref_name(worktree), 0);
13435 	if (error)
13436 		goto done;
13437 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
13438 	if (error)
13439 		goto done;
13440 
13441 	if (continue_merge) {
13442 		struct got_object_id *base_commit_id;
13443 		base_commit_id = got_worktree_get_base_commit_id(worktree);
13444 		if (got_object_id_cmp(wt_branch_tip, base_commit_id) != 0) {
13445 			error = got_error(GOT_ERR_MERGE_COMMIT_OUT_OF_DATE);
13446 			goto done;
13447 		}
13448 		error = got_worktree_merge_continue(&branch_name,
13449 		    &branch_tip, &fileindex, worktree, repo);
13450 		if (error)
13451 			goto done;
13452 	} else {
13453 		error = got_ref_open(&branch, repo, argv[0], 0);
13454 		if (error != NULL)
13455 			goto done;
13456 		branch_name = strdup(got_ref_get_name(branch));
13457 		if (branch_name == NULL) {
13458 			error = got_error_from_errno("strdup");
13459 			goto done;
13460 		}
13461 		error = got_ref_resolve(&branch_tip, repo, branch);
13462 		if (error)
13463 			goto done;
13464 	}
13465 
13466 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
13467 	    wt_branch_tip, branch_tip, 0, repo,
13468 	    check_cancelled, NULL);
13469 	if (error && error->code != GOT_ERR_ANCESTRY)
13470 		goto done;
13471 
13472 	if (!continue_merge) {
13473 		error = check_path_prefix(wt_branch_tip, branch_tip,
13474 		    got_worktree_get_path_prefix(worktree),
13475 		    GOT_ERR_MERGE_PATH, repo);
13476 		if (error)
13477 			goto done;
13478 		error = got_worktree_merge_prepare(&fileindex, worktree, repo);
13479 		if (error)
13480 			goto done;
13481 		if (prefer_fast_forward && yca_id &&
13482 		    got_object_id_cmp(wt_branch_tip, yca_id) == 0) {
13483 			struct got_pathlist_head paths;
13484 			if (interrupt_merge) {
13485 				error = got_error_fmt(GOT_ERR_BAD_OPTION,
13486 				    "there are no changes to merge since %s "
13487 				    "is already based on %s; merge cannot be "
13488 				    "interrupted for amending; -n",
13489 				    branch_name, got_ref_get_name(wt_branch));
13490 				goto done;
13491 			}
13492 			printf("Forwarding %s to %s\n",
13493 				got_ref_get_name(wt_branch), branch_name);
13494 			error = got_ref_change_ref(wt_branch, branch_tip);
13495 			if (error)
13496 				goto done;
13497 			error = got_ref_write(wt_branch, repo);
13498 			if (error)
13499 				goto done;
13500 			error = got_worktree_set_base_commit_id(worktree, repo,
13501 			    branch_tip);
13502 			if (error)
13503 				goto done;
13504 			TAILQ_INIT(&paths);
13505 			error = got_pathlist_append(&paths, "", NULL);
13506 			if (error)
13507 				goto done;
13508 			error = got_worktree_checkout_files(worktree,
13509 			    &paths, repo, update_progress, &upa,
13510 			    check_cancelled, NULL);
13511 			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
13512 			if (error)
13513 				goto done;
13514 			if (upa.did_something) {
13515 				char *id_str;
13516 				error = got_object_id_str(&id_str, branch_tip);
13517 				if (error)
13518 					goto done;
13519 				printf("Updated to commit %s\n", id_str);
13520 				free(id_str);
13521 			} else
13522 				printf("Already up-to-date\n");
13523 			print_update_progress_stats(&upa);
13524 			goto done;
13525 		}
13526 		error = got_worktree_merge_write_refs(worktree, branch, repo);
13527 		if (error)
13528 			goto done;
13529 
13530 		error = got_worktree_merge_branch(worktree, fileindex,
13531 		    yca_id, branch_tip, repo, update_progress, &upa,
13532 		    check_cancelled, NULL);
13533 		if (error)
13534 			goto done;
13535 		print_merge_progress_stats(&upa);
13536 		if (!upa.did_something) {
13537 			error = got_worktree_merge_abort(worktree, fileindex,
13538 			    repo, abort_progress, &upa);
13539 			if (error)
13540 				goto done;
13541 			printf("Already up-to-date\n");
13542 			goto done;
13543 		}
13544 	}
13545 
13546 	if (interrupt_merge) {
13547 		error = got_worktree_merge_postpone(worktree, fileindex);
13548 		if (error)
13549 			goto done;
13550 		printf("Merge of %s interrupted on request\n", branch_name);
13551 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
13552 	    upa.not_deleted > 0 || upa.unversioned > 0) {
13553 		error = got_worktree_merge_postpone(worktree, fileindex);
13554 		if (error)
13555 			goto done;
13556 		if (upa.conflicts > 0 && upa.missing == 0 &&
13557 		    upa.not_deleted == 0 && upa.unversioned == 0) {
13558 			error = got_error_msg(GOT_ERR_CONFLICTS,
13559 			    "conflicts must be resolved before merging "
13560 			    "can continue");
13561 		} else if (upa.conflicts > 0) {
13562 			error = got_error_msg(GOT_ERR_CONFLICTS,
13563 			    "conflicts must be resolved before merging "
13564 			    "can continue; changes destined for some "
13565 			    "files were not yet merged and "
13566 			    "should be merged manually if required before the "
13567 			    "merge operation is continued");
13568 		} else {
13569 			error = got_error_msg(GOT_ERR_CONFLICTS,
13570 			    "changes destined for some "
13571 			    "files were not yet merged and should be "
13572 			    "merged manually if required before the "
13573 			    "merge operation is continued");
13574 		}
13575 		goto done;
13576 	} else {
13577 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
13578 		    fileindex, author, NULL, 1, branch_tip, branch_name,
13579 		    allow_conflict, repo, continue_merge ? print_status : NULL,
13580 		    NULL);
13581 		if (error)
13582 			goto done;
13583 		error = got_worktree_merge_complete(worktree, fileindex, repo);
13584 		if (error)
13585 			goto done;
13586 		error = got_object_id_str(&id_str, merge_commit_id);
13587 		if (error)
13588 			goto done;
13589 		printf("Merged %s into %s: %s\n", branch_name,
13590 		    got_worktree_get_head_ref_name(worktree),
13591 		    id_str);
13592 
13593 	}
13594 done:
13595 	free(gitconfig_path);
13596 	free(id_str);
13597 	free(merge_commit_id);
13598 	free(author);
13599 	free(branch_tip);
13600 	free(branch_name);
13601 	free(yca_id);
13602 	if (branch)
13603 		got_ref_close(branch);
13604 	if (wt_branch)
13605 		got_ref_close(wt_branch);
13606 	if (worktree)
13607 		got_worktree_close(worktree);
13608 	if (repo) {
13609 		const struct got_error *close_err = got_repo_close(repo);
13610 		if (error == NULL)
13611 			error = close_err;
13612 	}
13613 	if (pack_fds) {
13614 		const struct got_error *pack_err =
13615 		    got_repo_pack_fds_close(pack_fds);
13616 		if (error == NULL)
13617 			error = pack_err;
13618 	}
13619 	return error;
13620 }
13621 
13622 __dead static void
13623 usage_stage(void)
13624 {
13625 	fprintf(stderr, "usage: %s stage [-lpS] [-F response-script] "
13626 	    "[path ...]\n", getprogname());
13627 	exit(1);
13628 }
13629 
13630 static const struct got_error *
13631 print_stage(void *arg, unsigned char status, unsigned char staged_status,
13632     const char *path, struct got_object_id *blob_id,
13633     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
13634     int dirfd, const char *de_name)
13635 {
13636 	const struct got_error *err = NULL;
13637 	char *id_str = NULL;
13638 
13639 	if (staged_status != GOT_STATUS_ADD &&
13640 	    staged_status != GOT_STATUS_MODIFY &&
13641 	    staged_status != GOT_STATUS_DELETE)
13642 		return NULL;
13643 
13644 	if (staged_status == GOT_STATUS_ADD ||
13645 	    staged_status == GOT_STATUS_MODIFY)
13646 		err = got_object_id_str(&id_str, staged_blob_id);
13647 	else
13648 		err = got_object_id_str(&id_str, blob_id);
13649 	if (err)
13650 		return err;
13651 
13652 	printf("%s %c %s\n", id_str, staged_status, path);
13653 	free(id_str);
13654 	return NULL;
13655 }
13656 
13657 static const struct got_error *
13658 cmd_stage(int argc, char *argv[])
13659 {
13660 	const struct got_error *error = NULL;
13661 	struct got_repository *repo = NULL;
13662 	struct got_worktree *worktree = NULL;
13663 	char *cwd = NULL;
13664 	struct got_pathlist_head paths;
13665 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
13666 	FILE *patch_script_file = NULL;
13667 	const char *patch_script_path = NULL;
13668 	struct choose_patch_arg cpa;
13669 	int *pack_fds = NULL;
13670 
13671 	TAILQ_INIT(&paths);
13672 
13673 #ifndef PROFILE
13674 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13675 	    "unveil", NULL) == -1)
13676 		err(1, "pledge");
13677 #endif
13678 
13679 	while ((ch = getopt(argc, argv, "F:lpS")) != -1) {
13680 		switch (ch) {
13681 		case 'F':
13682 			patch_script_path = optarg;
13683 			break;
13684 		case 'l':
13685 			list_stage = 1;
13686 			break;
13687 		case 'p':
13688 			pflag = 1;
13689 			break;
13690 		case 'S':
13691 			allow_bad_symlinks = 1;
13692 			break;
13693 		default:
13694 			usage_stage();
13695 			/* NOTREACHED */
13696 		}
13697 	}
13698 
13699 	argc -= optind;
13700 	argv += optind;
13701 
13702 	if (list_stage && (pflag || patch_script_path))
13703 		errx(1, "-l option cannot be used with other options");
13704 	if (patch_script_path && !pflag)
13705 		errx(1, "-F option can only be used together with -p option");
13706 
13707 	cwd = getcwd(NULL, 0);
13708 	if (cwd == NULL) {
13709 		error = got_error_from_errno("getcwd");
13710 		goto done;
13711 	}
13712 
13713 	error = got_repo_pack_fds_open(&pack_fds);
13714 	if (error != NULL)
13715 		goto done;
13716 
13717 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
13718 	if (error) {
13719 		if (error->code == GOT_ERR_NOT_WORKTREE)
13720 			error = wrap_not_worktree_error(error, "stage", cwd);
13721 		goto done;
13722 	}
13723 
13724 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13725 	    NULL, pack_fds);
13726 	if (error != NULL)
13727 		goto done;
13728 
13729 	if (patch_script_path) {
13730 		patch_script_file = fopen(patch_script_path, "re");
13731 		if (patch_script_file == NULL) {
13732 			error = got_error_from_errno2("fopen",
13733 			    patch_script_path);
13734 			goto done;
13735 		}
13736 	}
13737 	error = apply_unveil(got_repo_get_path(repo), 0,
13738 	    got_worktree_get_root_path(worktree));
13739 	if (error)
13740 		goto done;
13741 
13742 	error = check_merge_in_progress(worktree, repo);
13743 	if (error)
13744 		goto done;
13745 
13746 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13747 	if (error)
13748 		goto done;
13749 
13750 	if (list_stage)
13751 		error = got_worktree_status(worktree, &paths, repo, 0,
13752 		    print_stage, NULL, check_cancelled, NULL);
13753 	else {
13754 		cpa.patch_script_file = patch_script_file;
13755 		cpa.action = "stage";
13756 		error = got_worktree_stage(worktree, &paths,
13757 		    pflag ? NULL : print_status, NULL,
13758 		    pflag ? choose_patch : NULL, &cpa,
13759 		    allow_bad_symlinks, repo);
13760 	}
13761 done:
13762 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13763 	    error == NULL)
13764 		error = got_error_from_errno2("fclose", patch_script_path);
13765 	if (repo) {
13766 		const struct got_error *close_err = got_repo_close(repo);
13767 		if (error == NULL)
13768 			error = close_err;
13769 	}
13770 	if (worktree)
13771 		got_worktree_close(worktree);
13772 	if (pack_fds) {
13773 		const struct got_error *pack_err =
13774 		    got_repo_pack_fds_close(pack_fds);
13775 		if (error == NULL)
13776 			error = pack_err;
13777 	}
13778 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13779 	free(cwd);
13780 	return error;
13781 }
13782 
13783 __dead static void
13784 usage_unstage(void)
13785 {
13786 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
13787 	    "[path ...]\n", getprogname());
13788 	exit(1);
13789 }
13790 
13791 
13792 static const struct got_error *
13793 cmd_unstage(int argc, char *argv[])
13794 {
13795 	const struct got_error *error = NULL;
13796 	struct got_repository *repo = NULL;
13797 	struct got_worktree *worktree = NULL;
13798 	char *cwd = NULL;
13799 	struct got_pathlist_head paths;
13800 	int ch, pflag = 0;
13801 	struct got_update_progress_arg upa;
13802 	FILE *patch_script_file = NULL;
13803 	const char *patch_script_path = NULL;
13804 	struct choose_patch_arg cpa;
13805 	int *pack_fds = NULL;
13806 
13807 	TAILQ_INIT(&paths);
13808 
13809 #ifndef PROFILE
13810 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13811 	    "unveil", NULL) == -1)
13812 		err(1, "pledge");
13813 #endif
13814 
13815 	while ((ch = getopt(argc, argv, "F:p")) != -1) {
13816 		switch (ch) {
13817 		case 'F':
13818 			patch_script_path = optarg;
13819 			break;
13820 		case 'p':
13821 			pflag = 1;
13822 			break;
13823 		default:
13824 			usage_unstage();
13825 			/* NOTREACHED */
13826 		}
13827 	}
13828 
13829 	argc -= optind;
13830 	argv += optind;
13831 
13832 	if (patch_script_path && !pflag)
13833 		errx(1, "-F option can only be used together with -p option");
13834 
13835 	cwd = getcwd(NULL, 0);
13836 	if (cwd == NULL) {
13837 		error = got_error_from_errno("getcwd");
13838 		goto done;
13839 	}
13840 
13841 	error = got_repo_pack_fds_open(&pack_fds);
13842 	if (error != NULL)
13843 		goto done;
13844 
13845 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
13846 	if (error) {
13847 		if (error->code == GOT_ERR_NOT_WORKTREE)
13848 			error = wrap_not_worktree_error(error, "unstage", cwd);
13849 		goto done;
13850 	}
13851 
13852 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13853 	    NULL, pack_fds);
13854 	if (error != NULL)
13855 		goto done;
13856 
13857 	if (patch_script_path) {
13858 		patch_script_file = fopen(patch_script_path, "re");
13859 		if (patch_script_file == NULL) {
13860 			error = got_error_from_errno2("fopen",
13861 			    patch_script_path);
13862 			goto done;
13863 		}
13864 	}
13865 
13866 	error = apply_unveil(got_repo_get_path(repo), 0,
13867 	    got_worktree_get_root_path(worktree));
13868 	if (error)
13869 		goto done;
13870 
13871 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13872 	if (error)
13873 		goto done;
13874 
13875 	cpa.patch_script_file = patch_script_file;
13876 	cpa.action = "unstage";
13877 	memset(&upa, 0, sizeof(upa));
13878 	error = got_worktree_unstage(worktree, &paths, update_progress,
13879 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
13880 	if (!error)
13881 		print_merge_progress_stats(&upa);
13882 done:
13883 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13884 	    error == NULL)
13885 		error = got_error_from_errno2("fclose", patch_script_path);
13886 	if (repo) {
13887 		const struct got_error *close_err = got_repo_close(repo);
13888 		if (error == NULL)
13889 			error = close_err;
13890 	}
13891 	if (worktree)
13892 		got_worktree_close(worktree);
13893 	if (pack_fds) {
13894 		const struct got_error *pack_err =
13895 		    got_repo_pack_fds_close(pack_fds);
13896 		if (error == NULL)
13897 			error = pack_err;
13898 	}
13899 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13900 	free(cwd);
13901 	return error;
13902 }
13903 
13904 __dead static void
13905 usage_cat(void)
13906 {
13907 	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
13908 	    "arg ...\n", getprogname());
13909 	exit(1);
13910 }
13911 
13912 static const struct got_error *
13913 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13914 {
13915 	const struct got_error *err;
13916 	struct got_blob_object *blob;
13917 	int fd = -1;
13918 
13919 	fd = got_opentempfd();
13920 	if (fd == -1)
13921 		return got_error_from_errno("got_opentempfd");
13922 
13923 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
13924 	if (err)
13925 		goto done;
13926 
13927 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
13928 done:
13929 	if (fd != -1 && close(fd) == -1 && err == NULL)
13930 		err = got_error_from_errno("close");
13931 	if (blob)
13932 		got_object_blob_close(blob);
13933 	return err;
13934 }
13935 
13936 static const struct got_error *
13937 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13938 {
13939 	const struct got_error *err;
13940 	struct got_tree_object *tree;
13941 	int nentries, i;
13942 
13943 	err = got_object_open_as_tree(&tree, repo, id);
13944 	if (err)
13945 		return err;
13946 
13947 	nentries = got_object_tree_get_nentries(tree);
13948 	for (i = 0; i < nentries; i++) {
13949 		struct got_tree_entry *te;
13950 		char *id_str;
13951 		if (sigint_received || sigpipe_received)
13952 			break;
13953 		te = got_object_tree_get_entry(tree, i);
13954 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
13955 		if (err)
13956 			break;
13957 		fprintf(outfile, "%s %.7o %s\n", id_str,
13958 		    got_tree_entry_get_mode(te),
13959 		    got_tree_entry_get_name(te));
13960 		free(id_str);
13961 	}
13962 
13963 	got_object_tree_close(tree);
13964 	return err;
13965 }
13966 
13967 static const struct got_error *
13968 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13969 {
13970 	const struct got_error *err;
13971 	struct got_commit_object *commit;
13972 	const struct got_object_id_queue *parent_ids;
13973 	struct got_object_qid *pid;
13974 	char *id_str = NULL;
13975 	const char *logmsg = NULL;
13976 	char gmtoff[6];
13977 
13978 	err = got_object_open_as_commit(&commit, repo, id);
13979 	if (err)
13980 		return err;
13981 
13982 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
13983 	if (err)
13984 		goto done;
13985 
13986 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
13987 	parent_ids = got_object_commit_get_parent_ids(commit);
13988 	fprintf(outfile, "numparents %d\n",
13989 	    got_object_commit_get_nparents(commit));
13990 	STAILQ_FOREACH(pid, parent_ids, entry) {
13991 		char *pid_str;
13992 		err = got_object_id_str(&pid_str, &pid->id);
13993 		if (err)
13994 			goto done;
13995 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
13996 		free(pid_str);
13997 	}
13998 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13999 	    got_object_commit_get_author_gmtoff(commit));
14000 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
14001 	    got_object_commit_get_author(commit),
14002 	    (long long)got_object_commit_get_author_time(commit),
14003 	    gmtoff);
14004 
14005 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
14006 	    got_object_commit_get_committer_gmtoff(commit));
14007 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
14008 	    got_object_commit_get_committer(commit),
14009 	    (long long)got_object_commit_get_committer_time(commit),
14010 	    gmtoff);
14011 
14012 	logmsg = got_object_commit_get_logmsg_raw(commit);
14013 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
14014 	fprintf(outfile, "%s", logmsg);
14015 done:
14016 	free(id_str);
14017 	got_object_commit_close(commit);
14018 	return err;
14019 }
14020 
14021 static const struct got_error *
14022 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
14023 {
14024 	const struct got_error *err;
14025 	struct got_tag_object *tag;
14026 	char *id_str = NULL;
14027 	const char *tagmsg = NULL;
14028 	char gmtoff[6];
14029 
14030 	err = got_object_open_as_tag(&tag, repo, id);
14031 	if (err)
14032 		return err;
14033 
14034 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
14035 	if (err)
14036 		goto done;
14037 
14038 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
14039 
14040 	switch (got_object_tag_get_object_type(tag)) {
14041 	case GOT_OBJ_TYPE_BLOB:
14042 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
14043 		    GOT_OBJ_LABEL_BLOB);
14044 		break;
14045 	case GOT_OBJ_TYPE_TREE:
14046 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
14047 		    GOT_OBJ_LABEL_TREE);
14048 		break;
14049 	case GOT_OBJ_TYPE_COMMIT:
14050 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
14051 		    GOT_OBJ_LABEL_COMMIT);
14052 		break;
14053 	case GOT_OBJ_TYPE_TAG:
14054 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
14055 		    GOT_OBJ_LABEL_TAG);
14056 		break;
14057 	default:
14058 		break;
14059 	}
14060 
14061 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
14062 	    got_object_tag_get_name(tag));
14063 
14064 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
14065 	    got_object_tag_get_tagger_gmtoff(tag));
14066 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
14067 	    got_object_tag_get_tagger(tag),
14068 	    (long long)got_object_tag_get_tagger_time(tag),
14069 	    gmtoff);
14070 
14071 	tagmsg = got_object_tag_get_message(tag);
14072 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
14073 	fprintf(outfile, "%s", tagmsg);
14074 done:
14075 	free(id_str);
14076 	got_object_tag_close(tag);
14077 	return err;
14078 }
14079 
14080 static const struct got_error *
14081 cmd_cat(int argc, char *argv[])
14082 {
14083 	const struct got_error *error;
14084 	struct got_repository *repo = NULL;
14085 	struct got_worktree *worktree = NULL;
14086 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
14087 	char *keyword_idstr = NULL;
14088 	const char *commit_id_str = NULL;
14089 	struct got_object_id *id = NULL, *commit_id = NULL;
14090 	struct got_commit_object *commit = NULL;
14091 	int ch, obj_type, i, force_path = 0;
14092 	struct got_reflist_head refs;
14093 	int *pack_fds = NULL;
14094 
14095 	TAILQ_INIT(&refs);
14096 
14097 #ifndef PROFILE
14098 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
14099 	    NULL) == -1)
14100 		err(1, "pledge");
14101 #endif
14102 
14103 	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
14104 		switch (ch) {
14105 		case 'c':
14106 			commit_id_str = optarg;
14107 			break;
14108 		case 'P':
14109 			force_path = 1;
14110 			break;
14111 		case 'r':
14112 			repo_path = realpath(optarg, NULL);
14113 			if (repo_path == NULL)
14114 				return got_error_from_errno2("realpath",
14115 				    optarg);
14116 			got_path_strip_trailing_slashes(repo_path);
14117 			break;
14118 		default:
14119 			usage_cat();
14120 			/* NOTREACHED */
14121 		}
14122 	}
14123 
14124 	argc -= optind;
14125 	argv += optind;
14126 
14127 	cwd = getcwd(NULL, 0);
14128 	if (cwd == NULL) {
14129 		error = got_error_from_errno("getcwd");
14130 		goto done;
14131 	}
14132 
14133 	error = got_repo_pack_fds_open(&pack_fds);
14134 	if (error != NULL)
14135 		goto done;
14136 
14137 	if (repo_path == NULL) {
14138 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
14139 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
14140 			goto done;
14141 		if (worktree) {
14142 			repo_path = strdup(
14143 			    got_worktree_get_repo_path(worktree));
14144 			if (repo_path == NULL) {
14145 				error = got_error_from_errno("strdup");
14146 				goto done;
14147 			}
14148 
14149 			if (commit_id_str == NULL) {
14150 				/* Release work tree lock. */
14151 				got_worktree_close(worktree);
14152 				worktree = NULL;
14153 			}
14154 		}
14155 	}
14156 
14157 	if (repo_path == NULL) {
14158 		repo_path = strdup(cwd);
14159 		if (repo_path == NULL)
14160 			return got_error_from_errno("strdup");
14161 	}
14162 
14163 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
14164 	free(repo_path);
14165 	if (error != NULL)
14166 		goto done;
14167 
14168 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
14169 	if (error)
14170 		goto done;
14171 
14172 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
14173 	if (error)
14174 		goto done;
14175 
14176 	if (commit_id_str != NULL) {
14177 		error = got_keyword_to_idstr(&keyword_idstr, commit_id_str,
14178 		    repo, worktree);
14179 		if (error != NULL)
14180 			goto done;
14181 		if (keyword_idstr != NULL)
14182 			commit_id_str = keyword_idstr;
14183 		if (worktree != NULL) {
14184 			got_worktree_close(worktree);
14185 			worktree = NULL;
14186 		}
14187 	} else
14188 		commit_id_str = GOT_REF_HEAD;
14189 	error = got_repo_match_object_id(&commit_id, NULL,
14190 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
14191 	if (error)
14192 		goto done;
14193 
14194 	error = got_object_open_as_commit(&commit, repo, commit_id);
14195 	if (error)
14196 		goto done;
14197 
14198 	for (i = 0; i < argc; i++) {
14199 		if (force_path) {
14200 			error = got_object_id_by_path(&id, repo, commit,
14201 			    argv[i]);
14202 			if (error)
14203 				break;
14204 		} else {
14205 			error = got_repo_match_object_id(&id, &label, argv[i],
14206 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
14207 			    repo);
14208 			if (error) {
14209 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
14210 				    error->code != GOT_ERR_NOT_REF)
14211 					break;
14212 				error = got_object_id_by_path(&id, repo,
14213 				    commit, argv[i]);
14214 				if (error)
14215 					break;
14216 			}
14217 		}
14218 
14219 		error = got_object_get_type(&obj_type, repo, id);
14220 		if (error)
14221 			break;
14222 
14223 		switch (obj_type) {
14224 		case GOT_OBJ_TYPE_BLOB:
14225 			error = cat_blob(id, repo, stdout);
14226 			break;
14227 		case GOT_OBJ_TYPE_TREE:
14228 			error = cat_tree(id, repo, stdout);
14229 			break;
14230 		case GOT_OBJ_TYPE_COMMIT:
14231 			error = cat_commit(id, repo, stdout);
14232 			break;
14233 		case GOT_OBJ_TYPE_TAG:
14234 			error = cat_tag(id, repo, stdout);
14235 			break;
14236 		default:
14237 			error = got_error(GOT_ERR_OBJ_TYPE);
14238 			break;
14239 		}
14240 		if (error)
14241 			break;
14242 		free(label);
14243 		label = NULL;
14244 		free(id);
14245 		id = NULL;
14246 	}
14247 done:
14248 	free(label);
14249 	free(id);
14250 	free(commit_id);
14251 	free(keyword_idstr);
14252 	if (commit)
14253 		got_object_commit_close(commit);
14254 	if (worktree)
14255 		got_worktree_close(worktree);
14256 	if (repo) {
14257 		const struct got_error *close_err = got_repo_close(repo);
14258 		if (error == NULL)
14259 			error = close_err;
14260 	}
14261 	if (pack_fds) {
14262 		const struct got_error *pack_err =
14263 		    got_repo_pack_fds_close(pack_fds);
14264 		if (error == NULL)
14265 			error = pack_err;
14266 	}
14267 
14268 	got_ref_list_free(&refs);
14269 	return error;
14270 }
14271 
14272 __dead static void
14273 usage_info(void)
14274 {
14275 	fprintf(stderr, "usage: %s info [path ...]\n",
14276 	    getprogname());
14277 	exit(1);
14278 }
14279 
14280 static const struct got_error *
14281 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
14282     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
14283     struct got_object_id *commit_id)
14284 {
14285 	const struct got_error *err = NULL;
14286 	char *id_str = NULL;
14287 	char datebuf[128];
14288 	struct tm mytm, *tm;
14289 	struct got_pathlist_head *paths = arg;
14290 	struct got_pathlist_entry *pe;
14291 
14292 	/*
14293 	 * Clear error indication from any of the path arguments which
14294 	 * would cause this file index entry to be displayed.
14295 	 */
14296 	TAILQ_FOREACH(pe, paths, entry) {
14297 		if (got_path_cmp(path, pe->path, strlen(path),
14298 		    pe->path_len) == 0 ||
14299 		    got_path_is_child(path, pe->path, pe->path_len))
14300 			pe->data = NULL; /* no error */
14301 	}
14302 
14303 	printf(GOT_COMMIT_SEP_STR);
14304 	if (S_ISLNK(mode))
14305 		printf("symlink: %s\n", path);
14306 	else if (S_ISREG(mode)) {
14307 		printf("file: %s\n", path);
14308 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
14309 	} else if (S_ISDIR(mode))
14310 		printf("directory: %s\n", path);
14311 	else
14312 		printf("something: %s\n", path);
14313 
14314 	tm = localtime_r(&mtime, &mytm);
14315 	if (tm == NULL)
14316 		return NULL;
14317 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
14318 		return got_error(GOT_ERR_NO_SPACE);
14319 	printf("timestamp: %s\n", datebuf);
14320 
14321 	if (blob_id) {
14322 		err = got_object_id_str(&id_str, blob_id);
14323 		if (err)
14324 			return err;
14325 		printf("based on blob: %s\n", id_str);
14326 		free(id_str);
14327 	}
14328 
14329 	if (staged_blob_id) {
14330 		err = got_object_id_str(&id_str, staged_blob_id);
14331 		if (err)
14332 			return err;
14333 		printf("based on staged blob: %s\n", id_str);
14334 		free(id_str);
14335 	}
14336 
14337 	if (commit_id) {
14338 		err = got_object_id_str(&id_str, commit_id);
14339 		if (err)
14340 			return err;
14341 		printf("based on commit: %s\n", id_str);
14342 		free(id_str);
14343 	}
14344 
14345 	return NULL;
14346 }
14347 
14348 static const struct got_error *
14349 cmd_info(int argc, char *argv[])
14350 {
14351 	const struct got_error *error = NULL;
14352 	struct got_worktree *worktree = NULL;
14353 	char *cwd = NULL, *id_str = NULL;
14354 	struct got_pathlist_head paths;
14355 	char *uuidstr = NULL;
14356 	int ch, show_files = 0;
14357 
14358 	TAILQ_INIT(&paths);
14359 
14360 #ifndef PROFILE
14361 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
14362 	    NULL) == -1)
14363 		err(1, "pledge");
14364 #endif
14365 
14366 	while ((ch = getopt(argc, argv, "")) != -1) {
14367 		switch (ch) {
14368 		default:
14369 			usage_info();
14370 			/* NOTREACHED */
14371 		}
14372 	}
14373 
14374 	argc -= optind;
14375 	argv += optind;
14376 
14377 	cwd = getcwd(NULL, 0);
14378 	if (cwd == NULL) {
14379 		error = got_error_from_errno("getcwd");
14380 		goto done;
14381 	}
14382 
14383 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_GOT_DIR);
14384 	if (error) {
14385 		if (error->code == GOT_ERR_NOT_WORKTREE)
14386 			error = wrap_not_worktree_error(error, "info", cwd);
14387 		goto done;
14388 	}
14389 
14390 #ifndef PROFILE
14391 	/* Remove "wpath cpath proc exec sendfd" promises. */
14392 	if (pledge("stdio rpath flock unveil", NULL) == -1)
14393 		err(1, "pledge");
14394 #endif
14395 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
14396 	if (error)
14397 		goto done;
14398 
14399 	if (argc >= 1) {
14400 		error = get_worktree_paths_from_argv(&paths, argc, argv,
14401 		    worktree);
14402 		if (error)
14403 			goto done;
14404 		show_files = 1;
14405 	}
14406 
14407 	error = got_object_id_str(&id_str,
14408 	    got_worktree_get_base_commit_id(worktree));
14409 	if (error)
14410 		goto done;
14411 
14412 	error = got_worktree_get_uuid(&uuidstr, worktree);
14413 	if (error)
14414 		goto done;
14415 
14416 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
14417 	printf("work tree base commit: %s\n", id_str);
14418 	printf("work tree path prefix: %s\n",
14419 	    got_worktree_get_path_prefix(worktree));
14420 	printf("work tree branch reference: %s\n",
14421 	    got_worktree_get_head_ref_name(worktree));
14422 	printf("work tree UUID: %s\n", uuidstr);
14423 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
14424 
14425 	if (show_files) {
14426 		struct got_pathlist_entry *pe;
14427 		TAILQ_FOREACH(pe, &paths, entry) {
14428 			if (pe->path_len == 0)
14429 				continue;
14430 			/*
14431 			 * Assume this path will fail. This will be corrected
14432 			 * in print_path_info() in case the path does suceeed.
14433 			 */
14434 			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
14435 		}
14436 		error = got_worktree_path_info(worktree, &paths,
14437 		    print_path_info, &paths, check_cancelled, NULL);
14438 		if (error)
14439 			goto done;
14440 		TAILQ_FOREACH(pe, &paths, entry) {
14441 			if (pe->data != NULL) {
14442 				const struct got_error *perr;
14443 
14444 				perr = pe->data;
14445 				error = got_error_fmt(perr->code, "%s",
14446 				    pe->path);
14447 				break;
14448 			}
14449 		}
14450 	}
14451 done:
14452 	if (worktree)
14453 		got_worktree_close(worktree);
14454 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
14455 	free(cwd);
14456 	free(id_str);
14457 	free(uuidstr);
14458 	return error;
14459 }