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  * Copyright (C) 2023 Josh Rickmar <jrick@zettaport.com>
6  *
7  * Permission to use, copy, modify, and distribute this software for any
8  * purpose with or without fee is hereby granted, provided that the above
9  * copyright notice and this permission notice appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 #include <sys/queue.h>
21 #include <sys/time.h>
22 #include <sys/types.h>
23 #include <sys/stat.h>
24 #include <sys/wait.h>
25 
26 #include <err.h>
27 #include <errno.h>
28 #include <fcntl.h>
29 #include <limits.h>
30 #include <locale.h>
31 #include <ctype.h>
32 #include <sha1.h>
33 #include <sha2.h>
34 #include <signal.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <unistd.h>
39 #include <libgen.h>
40 #include <time.h>
41 #include <paths.h>
42 #include <regex.h>
43 #include <getopt.h>
44 #include <util.h>
45 
46 #include "got_version.h"
47 #include "got_error.h"
48 #include "got_object.h"
49 #include "got_reference.h"
50 #include "got_repository.h"
51 #include "got_path.h"
52 #include "got_cancel.h"
53 #include "got_worktree.h"
54 #include "got_worktree_cvg.h"
55 #include "got_diff.h"
56 #include "got_commit_graph.h"
57 #include "got_fetch.h"
58 #include "got_send.h"
59 #include "got_blame.h"
60 #include "got_privsep.h"
61 #include "got_opentemp.h"
62 #include "got_gotconfig.h"
63 #include "got_dial.h"
64 #include "got_patch.h"
65 #include "got_sigs.h"
66 #include "got_date.h"
67 
68 #ifndef nitems
69 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
70 #endif
71 
72 #ifndef GOT_DEFAULT_EDITOR
73 #define GOT_DEFAULT_EDITOR "/usr/bin/vi"
74 #endif
75 
76 static volatile sig_atomic_t sigint_received;
77 static volatile sig_atomic_t sigpipe_received;
78 
79 static void
80 catch_sigint(int signo)
81 {
82 	sigint_received = 1;
83 }
84 
85 static void
86 catch_sigpipe(int signo)
87 {
88 	sigpipe_received = 1;
89 }
90 
91 
92 struct got_cmd {
93 	const char	*cmd_name;
94 	const struct got_error *(*cmd_main)(int, char *[]);
95 	void		(*cmd_usage)(void);
96 	const char	*cmd_alias;
97 };
98 
99 __dead static void	usage(int, int);
100 __dead static void	usage_import(void);
101 __dead static void	usage_clone(void);
102 __dead static void	usage_checkout(void);
103 __dead static void	usage_update(void);
104 __dead static void	usage_log(void);
105 __dead static void	usage_diff(void);
106 __dead static void	usage_blame(void);
107 __dead static void	usage_tree(void);
108 __dead static void	usage_status(void);
109 __dead static void	usage_tag(void);
110 __dead static void	usage_add(void);
111 __dead static void	usage_remove(void);
112 __dead static void	usage_patch(void);
113 __dead static void	usage_revert(void);
114 __dead static void	usage_commit(void);
115 __dead static void	usage_cherrypick(void);
116 __dead static void	usage_backout(void);
117 __dead static void	usage_cat(void);
118 __dead static void	usage_info(void);
119 
120 static const struct got_error*		cmd_import(int, char *[]);
121 static const struct got_error*		cmd_clone(int, char *[]);
122 static const struct got_error*		cmd_checkout(int, char *[]);
123 static const struct got_error*		cmd_update(int, char *[]);
124 static const struct got_error*		cmd_log(int, char *[]);
125 static const struct got_error*		cmd_diff(int, char *[]);
126 static const struct got_error*		cmd_blame(int, char *[]);
127 static const struct got_error*		cmd_tree(int, char *[]);
128 static const struct got_error*		cmd_status(int, char *[]);
129 static const struct got_error*		cmd_tag(int, char *[]);
130 static const struct got_error*		cmd_add(int, char *[]);
131 static const struct got_error*		cmd_remove(int, char *[]);
132 static const struct got_error*		cmd_patch(int, char *[]);
133 static const struct got_error*		cmd_revert(int, char *[]);
134 static const struct got_error*		cmd_commit(int, char *[]);
135 static const struct got_error*		cmd_cherrypick(int, char *[]);
136 static const struct got_error*		cmd_backout(int, char *[]);
137 static const struct got_error*		cmd_cat(int, char *[]);
138 static const struct got_error*		cmd_info(int, char *[]);
139 
140 static const struct got_cmd got_commands[] = {
141 	{ "import",	cmd_import,	usage_import,	"im" },
142 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
143 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
144 	{ "update",	cmd_update,	usage_update,	"up" },
145 	{ "log",	cmd_log,	usage_log,	"" },
146 	{ "diff",	cmd_diff,	usage_diff,	"di" },
147 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
148 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
149 	{ "status",	cmd_status,	usage_status,	"st" },
150 	{ "tag",	cmd_tag,	usage_tag,	"" },
151 	{ "add",	cmd_add,	usage_add,	"" },
152 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
153 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
154 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
155 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
156 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
157 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
158 	{ "cat",	cmd_cat,	usage_cat,	"" },
159 	{ "info",	cmd_info,	usage_info,	"" },
160 };
161 
162 static void
163 list_commands(FILE *fp)
164 {
165 	size_t i;
166 
167 	fprintf(fp, "commands:");
168 	for (i = 0; i < nitems(got_commands); i++) {
169 		const struct got_cmd *cmd = &got_commands[i];
170 		fprintf(fp, " %s", cmd->cmd_name);
171 	}
172 	fputc('\n', fp);
173 }
174 
175 __dead static void
176 option_conflict(char a, char b)
177 {
178 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
179 }
180 
181 int
182 main(int argc, char *argv[])
183 {
184 	const struct got_cmd *cmd;
185 	size_t i;
186 	int ch;
187 	int hflag = 0, Vflag = 0;
188 	static const struct option longopts[] = {
189 	    { "version", no_argument, NULL, 'V' },
190 	    { NULL, 0, NULL, 0 }
191 	};
192 
193 	setlocale(LC_CTYPE, "");
194 
195 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
196 		switch (ch) {
197 		case 'h':
198 			hflag = 1;
199 			break;
200 		case 'V':
201 			Vflag = 1;
202 			break;
203 		default:
204 			usage(hflag, 1);
205 			/* NOTREACHED */
206 		}
207 	}
208 
209 	argc -= optind;
210 	argv += optind;
211 	optind = 1;
212 	optreset = 1;
213 
214 	if (Vflag) {
215 		got_version_print_str();
216 		return 0;
217 	}
218 
219 	if (argc <= 0)
220 		usage(hflag, hflag ? 0 : 1);
221 
222 	signal(SIGINT, catch_sigint);
223 	signal(SIGPIPE, catch_sigpipe);
224 
225 	for (i = 0; i < nitems(got_commands); i++) {
226 		const struct got_error *error;
227 
228 		cmd = &got_commands[i];
229 
230 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
231 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
232 			continue;
233 
234 		if (hflag)
235 			cmd->cmd_usage();
236 
237 		error = cmd->cmd_main(argc, argv);
238 		if (error && error->code != GOT_ERR_CANCELLED &&
239 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
240 		    !(sigpipe_received &&
241 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
242 		    !(sigint_received &&
243 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
244 			fflush(stdout);
245 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
246 			return 1;
247 		}
248 
249 		return 0;
250 	}
251 
252 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
253 	list_commands(stderr);
254 	return 1;
255 }
256 
257 __dead static void
258 usage(int hflag, int status)
259 {
260 	FILE *fp = (status == 0) ? stdout : stderr;
261 
262 	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
263 	    getprogname());
264 	if (hflag)
265 		list_commands(fp);
266 	exit(status);
267 }
268 
269 static const struct got_error *
270 get_editor(char **abspath)
271 {
272 	const struct got_error *err = NULL;
273 	const char *editor;
274 
275 	*abspath = NULL;
276 
277 	editor = getenv("VISUAL");
278 	if (editor == NULL)
279 		editor = getenv("EDITOR");
280 
281 	if (editor) {
282 		err = got_path_find_prog(abspath, editor);
283 		if (err)
284 			return err;
285 	}
286 
287 	if (*abspath == NULL) {
288 		*abspath = strdup(GOT_DEFAULT_EDITOR);
289 		if (*abspath == NULL)
290 			return got_error_from_errno("strdup");
291 	}
292 
293 	return NULL;
294 }
295 
296 static const struct got_error *
297 apply_unveil(const char *repo_path, int repo_read_only,
298     const char *worktree_path)
299 {
300 	const struct got_error *err;
301 
302 #ifdef PROFILE
303 	if (unveil("gmon.out", "rwc") != 0)
304 		return got_error_from_errno2("unveil", "gmon.out");
305 #endif
306 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
307 		return got_error_from_errno2("unveil", repo_path);
308 
309 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
310 		return got_error_from_errno2("unveil", worktree_path);
311 
312 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
313 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
314 
315 	err = got_privsep_unveil_exec_helpers();
316 	if (err != NULL)
317 		return err;
318 
319 	if (unveil(NULL, NULL) != 0)
320 		return got_error_from_errno("unveil");
321 
322 	return NULL;
323 }
324 
325 __dead static void
326 usage_import(void)
327 {
328 	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
329 	    "[-r repository-path] directory\n", getprogname());
330 	exit(1);
331 }
332 
333 static int
334 spawn_editor(const char *editor, const char *file)
335 {
336 	pid_t pid;
337 	sig_t sighup, sigint, sigquit;
338 	int st = -1;
339 
340 	sighup = signal(SIGHUP, SIG_IGN);
341 	sigint = signal(SIGINT, SIG_IGN);
342 	sigquit = signal(SIGQUIT, SIG_IGN);
343 
344 	switch (pid = fork()) {
345 	case -1:
346 		goto doneediting;
347 	case 0:
348 		execl(editor, editor, file, (char *)NULL);
349 		_exit(127);
350 	}
351 
352 	while (waitpid(pid, &st, 0) == -1)
353 		if (errno != EINTR)
354 			break;
355 
356 doneediting:
357 	(void)signal(SIGHUP, sighup);
358 	(void)signal(SIGINT, sigint);
359 	(void)signal(SIGQUIT, sigquit);
360 
361 	if (!WIFEXITED(st)) {
362 		errno = EINTR;
363 		return -1;
364 	}
365 
366 	return WEXITSTATUS(st);
367 }
368 
369 static const struct got_error *
370 read_logmsg(char **logmsg, size_t *len, FILE *fp, size_t filesize)
371 {
372 	const struct got_error *err = NULL;
373 	char *line = NULL;
374 	size_t linesize = 0;
375 
376 	*logmsg = NULL;
377 	*len = 0;
378 
379 	if (fseeko(fp, 0L, SEEK_SET) == -1)
380 		return got_error_from_errno("fseeko");
381 
382 	*logmsg = malloc(filesize + 1);
383 	if (*logmsg == NULL)
384 		return got_error_from_errno("malloc");
385 	(*logmsg)[0] = '\0';
386 
387 	while (getline(&line, &linesize, fp) != -1) {
388 		if (line[0] == '#' || (*len == 0 && line[0] == '\n'))
389 			continue; /* remove comments and leading empty lines */
390 		*len = strlcat(*logmsg, line, filesize + 1);
391 		if (*len >= filesize + 1) {
392 			err = got_error(GOT_ERR_NO_SPACE);
393 			goto done;
394 		}
395 	}
396 	if (ferror(fp)) {
397 		err = got_ferror(fp, GOT_ERR_IO);
398 		goto done;
399 	}
400 
401 	while (*len > 0 && (*logmsg)[*len - 1] == '\n') {
402 		(*logmsg)[*len - 1] = '\0';
403 		(*len)--;
404 	}
405 done:
406 	free(line);
407 	if (err) {
408 		free(*logmsg);
409 		*logmsg = NULL;
410 		*len = 0;
411 	}
412 	return err;
413 }
414 
415 static const struct got_error *
416 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
417     const char *initial_content, size_t initial_content_len,
418     int require_modification)
419 {
420 	const struct got_error *err = NULL;
421 	struct stat st, st2;
422 	FILE *fp = NULL;
423 	size_t logmsg_len;
424 
425 	*logmsg = NULL;
426 
427 	if (stat(logmsg_path, &st) == -1)
428 		return got_error_from_errno2("stat", logmsg_path);
429 
430 	if (spawn_editor(editor, logmsg_path) == -1)
431 		return got_error_from_errno("failed spawning editor");
432 
433 	if (require_modification) {
434 		struct timespec timeout;
435 
436 		timeout.tv_sec = 0;
437 		timeout.tv_nsec = 1;
438 		nanosleep(&timeout,  NULL);
439 	}
440 
441 	if (stat(logmsg_path, &st2) == -1)
442 		return got_error_from_errno2("stat", logmsg_path);
443 
444 	if (require_modification && st.st_size == st2.st_size &&
445 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==))
446 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
447 		    "no changes made to commit message, aborting");
448 
449 	fp = fopen(logmsg_path, "re");
450 	if (fp == NULL) {
451 		err = got_error_from_errno("fopen");
452 		goto done;
453 	}
454 
455 	/* strip comments and leading/trailing newlines */
456 	err = read_logmsg(logmsg, &logmsg_len, fp, st2.st_size);
457 	if (err)
458 		goto done;
459 	if (logmsg_len == 0) {
460 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
461 		    "commit message cannot be empty, aborting");
462 		goto done;
463 	}
464 done:
465 	if (fp && fclose(fp) == EOF && err == NULL)
466 		err = got_error_from_errno("fclose");
467 	if (err) {
468 		free(*logmsg);
469 		*logmsg = NULL;
470 	}
471 	return err;
472 }
473 
474 static const struct got_error *
475 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
476     const char *path_dir, const char *branch_name)
477 {
478 	char *initial_content = NULL;
479 	const struct got_error *err = NULL;
480 	int initial_content_len;
481 	int fd = -1;
482 
483 	initial_content_len = asprintf(&initial_content,
484 	    "\n# %s to be imported to branch %s\n", path_dir,
485 	    branch_name);
486 	if (initial_content_len == -1)
487 		return got_error_from_errno("asprintf");
488 
489 	err = got_opentemp_named_fd(logmsg_path, &fd,
490 	    GOT_TMPDIR_STR "/got-importmsg", "");
491 	if (err)
492 		goto done;
493 
494 	if (write(fd, initial_content, initial_content_len) == -1) {
495 		err = got_error_from_errno2("write", *logmsg_path);
496 		goto done;
497 	}
498 	if (close(fd) == -1) {
499 		err = got_error_from_errno2("close", *logmsg_path);
500 		goto done;
501 	}
502 	fd = -1;
503 
504 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
505 	    initial_content_len, 1);
506 done:
507 	if (fd != -1 && close(fd) == -1 && err == NULL)
508 		err = got_error_from_errno2("close", *logmsg_path);
509 	free(initial_content);
510 	if (err) {
511 		free(*logmsg_path);
512 		*logmsg_path = NULL;
513 	}
514 	return err;
515 }
516 
517 static const struct got_error *
518 import_progress(void *arg, const char *path)
519 {
520 	printf("A  %s\n", path);
521 	return NULL;
522 }
523 
524 static const struct got_error *
525 valid_author(const char *author)
526 {
527 	const char *email = author;
528 
529 	/*
530 	 * Git' expects the author (or committer) to be in the form
531 	 * "name <email>", which are mostly free form (see the
532 	 * "committer" description in git-fast-import(1)).  We're only
533 	 * doing this to avoid git's object parser breaking on commits
534 	 * we create.
535 	 */
536 
537 	while (*author && *author != '\n' && *author != '<' && *author != '>')
538 		author++;
539 	if (author != email && *author == '<' && *(author - 1) != ' ')
540 		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
541 		    "between author name and email required", email);
542 	if (*author++ != '<')
543 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
544 	while (*author && *author != '\n' && *author != '<' && *author != '>')
545 		author++;
546 	if (strcmp(author, ">") != 0)
547 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
548 	return NULL;
549 }
550 
551 static const struct got_error *
552 get_author(char **author, struct got_repository *repo,
553     struct got_worktree *worktree)
554 {
555 	const struct got_error *err = NULL;
556 	const char *got_author = NULL, *name, *email;
557 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
558 
559 	*author = NULL;
560 
561 	if (worktree)
562 		worktree_conf = got_worktree_get_gotconfig(worktree);
563 	repo_conf = got_repo_get_gotconfig(repo);
564 
565 	/*
566 	 * Priority of potential author information sources, from most
567 	 * significant to least significant:
568 	 * 1) work tree's .got/got.conf file
569 	 * 2) repository's got.conf file
570 	 * 3) repository's git config file
571 	 * 4) environment variables
572 	 * 5) global git config files (in user's home directory or /etc)
573 	 */
574 
575 	if (worktree_conf)
576 		got_author = got_gotconfig_get_author(worktree_conf);
577 	if (got_author == NULL)
578 		got_author = got_gotconfig_get_author(repo_conf);
579 	if (got_author == NULL) {
580 		name = got_repo_get_gitconfig_author_name(repo);
581 		email = got_repo_get_gitconfig_author_email(repo);
582 		if (name && email) {
583 			if (asprintf(author, "%s <%s>", name, email) == -1)
584 				return got_error_from_errno("asprintf");
585 			return NULL;
586 		}
587 
588 		got_author = getenv("GOT_AUTHOR");
589 		if (got_author == NULL) {
590 			name = got_repo_get_global_gitconfig_author_name(repo);
591 			email = got_repo_get_global_gitconfig_author_email(
592 			    repo);
593 			if (name && email) {
594 				if (asprintf(author, "%s <%s>", name, email)
595 				    == -1)
596 					return got_error_from_errno("asprintf");
597 				return NULL;
598 			}
599 			/* TODO: Look up user in password database? */
600 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
601 		}
602 	}
603 
604 	*author = strdup(got_author);
605 	if (*author == NULL)
606 		return got_error_from_errno("strdup");
607 
608 	err = valid_author(*author);
609 	if (err) {
610 		free(*author);
611 		*author = NULL;
612 	}
613 	return err;
614 }
615 
616 static const struct got_error *
617 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
618     struct got_worktree *worktree)
619 {
620 	const char *got_allowed_signers = NULL;
621 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
622 
623 	*allowed_signers = NULL;
624 
625 	if (worktree)
626 		worktree_conf = got_worktree_get_gotconfig(worktree);
627 	repo_conf = got_repo_get_gotconfig(repo);
628 
629 	/*
630 	 * Priority of potential author information sources, from most
631 	 * significant to least significant:
632 	 * 1) work tree's .got/got.conf file
633 	 * 2) repository's got.conf file
634 	 */
635 
636 	if (worktree_conf)
637 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
638 		    worktree_conf);
639 	if (got_allowed_signers == NULL)
640 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
641 		    repo_conf);
642 
643 	if (got_allowed_signers) {
644 		*allowed_signers = strdup(got_allowed_signers);
645 		if (*allowed_signers == NULL)
646 			return got_error_from_errno("strdup");
647 	}
648 	return NULL;
649 }
650 
651 static const struct got_error *
652 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
653     struct got_worktree *worktree)
654 {
655 	const char *got_revoked_signers = NULL;
656 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
657 
658 	*revoked_signers = NULL;
659 
660 	if (worktree)
661 		worktree_conf = got_worktree_get_gotconfig(worktree);
662 	repo_conf = got_repo_get_gotconfig(repo);
663 
664 	/*
665 	 * Priority of potential author information sources, from most
666 	 * significant to least significant:
667 	 * 1) work tree's .got/got.conf file
668 	 * 2) repository's got.conf file
669 	 */
670 
671 	if (worktree_conf)
672 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
673 		    worktree_conf);
674 	if (got_revoked_signers == NULL)
675 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
676 		    repo_conf);
677 
678 	if (got_revoked_signers) {
679 		*revoked_signers = strdup(got_revoked_signers);
680 		if (*revoked_signers == NULL)
681 			return got_error_from_errno("strdup");
682 	}
683 	return NULL;
684 }
685 
686 static const char *
687 get_signer_id(struct got_repository *repo, struct got_worktree *worktree)
688 {
689 	const char *got_signer_id = NULL;
690 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
691 
692 	if (worktree)
693 		worktree_conf = got_worktree_get_gotconfig(worktree);
694 	repo_conf = got_repo_get_gotconfig(repo);
695 
696 	/*
697 	 * Priority of potential author information sources, from most
698 	 * significant to least significant:
699 	 * 1) work tree's .got/got.conf file
700 	 * 2) repository's got.conf file
701 	 */
702 
703 	if (worktree_conf)
704 		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
705 	if (got_signer_id == NULL)
706 		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
707 
708 	return got_signer_id;
709 }
710 
711 static const struct got_error *
712 get_gitconfig_path(char **gitconfig_path)
713 {
714 	const char *homedir = getenv("HOME");
715 
716 	*gitconfig_path = NULL;
717 	if (homedir) {
718 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
719 			return got_error_from_errno("asprintf");
720 
721 	}
722 	return NULL;
723 }
724 
725 static const struct got_error *
726 cmd_import(int argc, char *argv[])
727 {
728 	const struct got_error *error = NULL;
729 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
730 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
731 	const char *branch_name = NULL;
732 	char *id_str = NULL, *logmsg_path = NULL;
733 	char refname[PATH_MAX] = "refs/heads/";
734 	struct got_repository *repo = NULL;
735 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
736 	struct got_object_id *new_commit_id = NULL;
737 	int ch, n = 0;
738 	struct got_pathlist_head ignores;
739 	struct got_pathlist_entry *pe;
740 	int preserve_logmsg = 0;
741 	int *pack_fds = NULL;
742 
743 	TAILQ_INIT(&ignores);
744 
745 #ifndef PROFILE
746 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
747 	    "unveil",
748 	    NULL) == -1)
749 		err(1, "pledge");
750 #endif
751 
752 	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
753 		switch (ch) {
754 		case 'b':
755 			branch_name = optarg;
756 			break;
757 		case 'I':
758 			if (optarg[0] == '\0')
759 				break;
760 			error = got_pathlist_insert(&pe, &ignores, optarg,
761 			    NULL);
762 			if (error)
763 				goto done;
764 			break;
765 		case 'm':
766 			logmsg = strdup(optarg);
767 			if (logmsg == NULL) {
768 				error = got_error_from_errno("strdup");
769 				goto done;
770 			}
771 			break;
772 		case 'r':
773 			repo_path = realpath(optarg, NULL);
774 			if (repo_path == NULL) {
775 				error = got_error_from_errno2("realpath",
776 				    optarg);
777 				goto done;
778 			}
779 			break;
780 		default:
781 			usage_import();
782 			/* NOTREACHED */
783 		}
784 	}
785 
786 	argc -= optind;
787 	argv += optind;
788 
789 	if (argc != 1)
790 		usage_import();
791 
792 	if (repo_path == NULL) {
793 		repo_path = getcwd(NULL, 0);
794 		if (repo_path == NULL)
795 			return got_error_from_errno("getcwd");
796 	}
797 	got_path_strip_trailing_slashes(repo_path);
798 	error = get_gitconfig_path(&gitconfig_path);
799 	if (error)
800 		goto done;
801 	error = got_repo_pack_fds_open(&pack_fds);
802 	if (error != NULL)
803 		goto done;
804 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
805 	if (error)
806 		goto done;
807 
808 	error = get_author(&author, repo, NULL);
809 	if (error)
810 		return error;
811 
812 	/*
813 	 * Don't let the user create a branch name with a leading '-'.
814 	 * While technically a valid reference name, this case is usually
815 	 * an unintended typo.
816 	 */
817 	if (branch_name && branch_name[0] == '-')
818 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
819 
820 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
821 	if (error && error->code != GOT_ERR_NOT_REF)
822 		goto done;
823 
824 	if (branch_name)
825 		n = strlcat(refname, branch_name, sizeof(refname));
826 	else if (head_ref && got_ref_is_symbolic(head_ref))
827 		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
828 		    sizeof(refname));
829 	else
830 		n = strlcat(refname, "main", sizeof(refname));
831 	if (n >= sizeof(refname)) {
832 		error = got_error(GOT_ERR_NO_SPACE);
833 		goto done;
834 	}
835 
836 	error = got_ref_open(&branch_ref, repo, refname, 0);
837 	if (error) {
838 		if (error->code != GOT_ERR_NOT_REF)
839 			goto done;
840 	} else {
841 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
842 		    "import target branch already exists");
843 		goto done;
844 	}
845 
846 	path_dir = realpath(argv[0], NULL);
847 	if (path_dir == NULL) {
848 		error = got_error_from_errno2("realpath", argv[0]);
849 		goto done;
850 	}
851 	got_path_strip_trailing_slashes(path_dir);
852 
853 	/*
854 	 * unveil(2) traverses exec(2); if an editor is used we have
855 	 * to apply unveil after the log message has been written.
856 	 */
857 	if (logmsg == NULL || *logmsg == '\0') {
858 		error = get_editor(&editor);
859 		if (error)
860 			goto done;
861 		free(logmsg);
862 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
863 		    path_dir, refname);
864 		if (error) {
865 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
866 			    logmsg_path != NULL)
867 				preserve_logmsg = 1;
868 			goto done;
869 		}
870 	}
871 
872 	if (unveil(path_dir, "r") != 0) {
873 		error = got_error_from_errno2("unveil", path_dir);
874 		if (logmsg_path)
875 			preserve_logmsg = 1;
876 		goto done;
877 	}
878 
879 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
880 	if (error) {
881 		if (logmsg_path)
882 			preserve_logmsg = 1;
883 		goto done;
884 	}
885 
886 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
887 	    author, &ignores, repo, import_progress, NULL);
888 	if (error) {
889 		if (logmsg_path)
890 			preserve_logmsg = 1;
891 		goto done;
892 	}
893 
894 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
895 	if (error) {
896 		if (logmsg_path)
897 			preserve_logmsg = 1;
898 		goto done;
899 	}
900 
901 	error = got_ref_write(branch_ref, repo);
902 	if (error) {
903 		if (logmsg_path)
904 			preserve_logmsg = 1;
905 		goto done;
906 	}
907 
908 	error = got_object_id_str(&id_str, new_commit_id);
909 	if (error) {
910 		if (logmsg_path)
911 			preserve_logmsg = 1;
912 		goto done;
913 	}
914 
915 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
916 	if (error) {
917 		if (error->code != GOT_ERR_NOT_REF) {
918 			if (logmsg_path)
919 				preserve_logmsg = 1;
920 			goto done;
921 		}
922 
923 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
924 		    branch_ref);
925 		if (error) {
926 			if (logmsg_path)
927 				preserve_logmsg = 1;
928 			goto done;
929 		}
930 
931 		error = got_ref_write(head_ref, repo);
932 		if (error) {
933 			if (logmsg_path)
934 				preserve_logmsg = 1;
935 			goto done;
936 		}
937 	}
938 
939 	printf("Created branch %s with commit %s\n",
940 	    got_ref_get_name(branch_ref), id_str);
941 done:
942 	if (pack_fds) {
943 		const struct got_error *pack_err =
944 		    got_repo_pack_fds_close(pack_fds);
945 		if (error == NULL)
946 			error = pack_err;
947 	}
948 	if (repo) {
949 		const struct got_error *close_err = got_repo_close(repo);
950 		if (error == NULL)
951 			error = close_err;
952 	}
953 	if (preserve_logmsg) {
954 		fprintf(stderr, "%s: log message preserved in %s\n",
955 		    getprogname(), logmsg_path);
956 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
957 		error = got_error_from_errno2("unlink", logmsg_path);
958 	free(logmsg);
959 	free(logmsg_path);
960 	free(repo_path);
961 	free(editor);
962 	free(new_commit_id);
963 	free(id_str);
964 	free(author);
965 	free(gitconfig_path);
966 	if (branch_ref)
967 		got_ref_close(branch_ref);
968 	if (head_ref)
969 		got_ref_close(head_ref);
970 	return error;
971 }
972 
973 __dead static void
974 usage_clone(void)
975 {
976 	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
977 	    "repository-URL [directory]\n", getprogname());
978 	exit(1);
979 }
980 
981 struct got_fetch_progress_arg {
982 	char last_scaled_size[FMT_SCALED_STRSIZE];
983 	int last_p_indexed;
984 	int last_p_resolved;
985 	int verbosity;
986 
987 	struct got_repository *repo;
988 
989 	int create_configs;
990 	int configs_created;
991 	struct {
992 		struct got_pathlist_head *symrefs;
993 		struct got_pathlist_head *wanted_branches;
994 		struct got_pathlist_head *wanted_refs;
995 		const char *proto;
996 		const char *host;
997 		const char *port;
998 		const char *remote_repo_path;
999 		const char *git_url;
1000 		int fetch_all_branches;
1001 		int mirror_references;
1002 	} config_info;
1003 };
1004 
1005 /* XXX forward declaration */
1006 static const struct got_error *
1007 create_config_files(const char *proto, const char *host, const char *port,
1008     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1009     int mirror_references, struct got_pathlist_head *symrefs,
1010     struct got_pathlist_head *wanted_branches,
1011     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1012 
1013 static const struct got_error *
1014 fetch_progress(void *arg, const char *message, off_t packfile_size,
1015     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1016 {
1017 	const struct got_error *err = NULL;
1018 	struct got_fetch_progress_arg *a = arg;
1019 	char scaled_size[FMT_SCALED_STRSIZE];
1020 	int p_indexed, p_resolved;
1021 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1022 
1023 	/*
1024 	 * In order to allow a failed clone to be resumed with 'got fetch'
1025 	 * we try to create configuration files as soon as possible.
1026 	 * Once the server has sent information about its default branch
1027 	 * we have all required information.
1028 	 */
1029 	if (a->create_configs && !a->configs_created &&
1030 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1031 		err = create_config_files(a->config_info.proto,
1032 		    a->config_info.host, a->config_info.port,
1033 		    a->config_info.remote_repo_path,
1034 		    a->config_info.git_url,
1035 		    a->config_info.fetch_all_branches,
1036 		    a->config_info.mirror_references,
1037 		    a->config_info.symrefs,
1038 		    a->config_info.wanted_branches,
1039 		    a->config_info.wanted_refs, a->repo);
1040 		if (err)
1041 			return err;
1042 		a->configs_created = 1;
1043 	}
1044 
1045 	if (a->verbosity < 0)
1046 		return NULL;
1047 
1048 	if (message && message[0] != '\0') {
1049 		printf("\rserver: %s", message);
1050 		fflush(stdout);
1051 		return NULL;
1052 	}
1053 
1054 	if (packfile_size > 0 || nobj_indexed > 0) {
1055 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1056 		    (a->last_scaled_size[0] == '\0' ||
1057 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1058 			print_size = 1;
1059 			if (strlcpy(a->last_scaled_size, scaled_size,
1060 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1061 				return got_error(GOT_ERR_NO_SPACE);
1062 		}
1063 		if (nobj_indexed > 0) {
1064 			p_indexed = (nobj_indexed * 100) / nobj_total;
1065 			if (p_indexed != a->last_p_indexed) {
1066 				a->last_p_indexed = p_indexed;
1067 				print_indexed = 1;
1068 				print_size = 1;
1069 			}
1070 		}
1071 		if (nobj_resolved > 0) {
1072 			p_resolved = (nobj_resolved * 100) /
1073 			    (nobj_total - nobj_loose);
1074 			if (p_resolved != a->last_p_resolved) {
1075 				a->last_p_resolved = p_resolved;
1076 				print_resolved = 1;
1077 				print_indexed = 1;
1078 				print_size = 1;
1079 			}
1080 		}
1081 
1082 	}
1083 	if (print_size || print_indexed || print_resolved)
1084 		printf("\r");
1085 	if (print_size)
1086 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1087 	if (print_indexed)
1088 		printf("; indexing %d%%", p_indexed);
1089 	if (print_resolved)
1090 		printf("; resolving deltas %d%%", p_resolved);
1091 	if (print_size || print_indexed || print_resolved)
1092 		fflush(stdout);
1093 
1094 	return NULL;
1095 }
1096 
1097 static const struct got_error *
1098 create_symref(const char *refname, struct got_reference *target_ref,
1099     int verbosity, struct got_repository *repo)
1100 {
1101 	const struct got_error *err;
1102 	struct got_reference *head_symref;
1103 
1104 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1105 	if (err)
1106 		return err;
1107 
1108 	err = got_ref_write(head_symref, repo);
1109 	if (err == NULL && verbosity > 0) {
1110 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1111 		    got_ref_get_name(target_ref));
1112 	}
1113 	got_ref_close(head_symref);
1114 	return err;
1115 }
1116 
1117 static const struct got_error *
1118 list_remote_refs(struct got_pathlist_head *symrefs,
1119     struct got_pathlist_head *refs)
1120 {
1121 	const struct got_error *err;
1122 	struct got_pathlist_entry *pe;
1123 
1124 	TAILQ_FOREACH(pe, symrefs, entry) {
1125 		const char *refname = pe->path;
1126 		const char *targetref = pe->data;
1127 
1128 		printf("%s: %s\n", refname, targetref);
1129 	}
1130 
1131 	TAILQ_FOREACH(pe, refs, entry) {
1132 		const char *refname = pe->path;
1133 		struct got_object_id *id = pe->data;
1134 		char *id_str;
1135 
1136 		err = got_object_id_str(&id_str, id);
1137 		if (err)
1138 			return err;
1139 		printf("%s: %s\n", refname, id_str);
1140 		free(id_str);
1141 	}
1142 
1143 	return NULL;
1144 }
1145 
1146 static const struct got_error *
1147 create_ref(const char *refname, struct got_object_id *id,
1148     int verbosity, struct got_repository *repo)
1149 {
1150 	const struct got_error *err = NULL;
1151 	struct got_reference *ref;
1152 	char *id_str;
1153 
1154 	err = got_object_id_str(&id_str, id);
1155 	if (err)
1156 		return err;
1157 
1158 	err = got_ref_alloc(&ref, refname, id);
1159 	if (err)
1160 		goto done;
1161 
1162 	err = got_ref_write(ref, repo);
1163 	got_ref_close(ref);
1164 
1165 	if (err == NULL && verbosity >= 0)
1166 		printf("Created reference %s: %s\n", refname, id_str);
1167 done:
1168 	free(id_str);
1169 	return err;
1170 }
1171 
1172 static int
1173 match_wanted_ref(const char *refname, const char *wanted_ref)
1174 {
1175 	if (strncmp(refname, "refs/", 5) != 0)
1176 		return 0;
1177 	refname += 5;
1178 
1179 	/*
1180 	 * Prevent fetching of references that won't make any
1181 	 * sense outside of the remote repository's context.
1182 	 */
1183 	if (strncmp(refname, "got/", 4) == 0)
1184 		return 0;
1185 	if (strncmp(refname, "remotes/", 8) == 0)
1186 		return 0;
1187 
1188 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1189 		wanted_ref += 5;
1190 
1191 	/* Allow prefix match. */
1192 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1193 		return 1;
1194 
1195 	/* Allow exact match. */
1196 	return (strcmp(refname, wanted_ref) == 0);
1197 }
1198 
1199 static int
1200 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1201 {
1202 	struct got_pathlist_entry *pe;
1203 
1204 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1205 		if (match_wanted_ref(refname, pe->path))
1206 			return 1;
1207 	}
1208 
1209 	return 0;
1210 }
1211 
1212 static const struct got_error *
1213 create_wanted_ref(const char *refname, struct got_object_id *id,
1214     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1215 {
1216 	const struct got_error *err;
1217 	char *remote_refname;
1218 
1219 	if (strncmp("refs/", refname, 5) == 0)
1220 		refname += 5;
1221 
1222 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1223 	    remote_repo_name, refname) == -1)
1224 		return got_error_from_errno("asprintf");
1225 
1226 	err = create_ref(remote_refname, id, verbosity, repo);
1227 	free(remote_refname);
1228 	return err;
1229 }
1230 
1231 static const struct got_error *
1232 create_gotconfig(const char *proto, const char *host, const char *port,
1233     const char *remote_repo_path, const char *default_branch,
1234     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1235     struct got_pathlist_head *wanted_refs, int mirror_references,
1236     struct got_repository *repo)
1237 {
1238 	const struct got_error *err = NULL;
1239 	char *gotconfig_path = NULL;
1240 	char *gotconfig = NULL;
1241 	FILE *gotconfig_file = NULL;
1242 	const char *branchname = NULL;
1243 	char *branches = NULL, *refs = NULL;
1244 	ssize_t n;
1245 
1246 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1247 		struct got_pathlist_entry *pe;
1248 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1249 			char *s;
1250 			branchname = pe->path;
1251 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1252 				branchname += 11;
1253 			if (asprintf(&s, "%s\"%s\" ",
1254 			    branches ? branches : "", branchname) == -1) {
1255 				err = got_error_from_errno("asprintf");
1256 				goto done;
1257 			}
1258 			free(branches);
1259 			branches = s;
1260 		}
1261 	} else if (!fetch_all_branches && default_branch) {
1262 		branchname = default_branch;
1263 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1264 			branchname += 11;
1265 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1266 			err = got_error_from_errno("asprintf");
1267 			goto done;
1268 		}
1269 	}
1270 	if (!TAILQ_EMPTY(wanted_refs)) {
1271 		struct got_pathlist_entry *pe;
1272 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1273 			char *s;
1274 			const char *refname = pe->path;
1275 			if (strncmp(refname, "refs/", 5) == 0)
1276 				branchname += 5;
1277 			if (asprintf(&s, "%s\"%s\" ",
1278 			    refs ? refs : "", refname) == -1) {
1279 				err = got_error_from_errno("asprintf");
1280 				goto done;
1281 			}
1282 			free(refs);
1283 			refs = s;
1284 		}
1285 	}
1286 
1287 	/* Create got.conf(5). */
1288 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1289 	if (gotconfig_path == NULL) {
1290 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1291 		goto done;
1292 	}
1293 	gotconfig_file = fopen(gotconfig_path, "ae");
1294 	if (gotconfig_file == NULL) {
1295 		err = got_error_from_errno2("fopen", gotconfig_path);
1296 		goto done;
1297 	}
1298 	if (asprintf(&gotconfig,
1299 	    "remote \"%s\" {\n"
1300 	    "\tserver %s\n"
1301 	    "\tprotocol %s\n"
1302 	    "%s%s%s"
1303 	    "\trepository \"%s\"\n"
1304 	    "%s%s%s"
1305 	    "%s%s%s"
1306 	    "%s"
1307 	    "%s"
1308 	    "}\n",
1309 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1310 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1311 	    remote_repo_path, branches ? "\tbranch { " : "",
1312 	    branches ? branches : "", branches ? "}\n" : "",
1313 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
1314 	    mirror_references ? "\tmirror_references yes\n" : "",
1315 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1316 		err = got_error_from_errno("asprintf");
1317 		goto done;
1318 	}
1319 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1320 	if (n != strlen(gotconfig)) {
1321 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1322 		goto done;
1323 	}
1324 
1325 done:
1326 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1327 		err = got_error_from_errno2("fclose", gotconfig_path);
1328 	free(gotconfig_path);
1329 	free(branches);
1330 	return err;
1331 }
1332 
1333 static const struct got_error *
1334 create_gitconfig(const char *git_url, const char *default_branch,
1335     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1336     struct got_pathlist_head *wanted_refs, int mirror_references,
1337     struct got_repository *repo)
1338 {
1339 	const struct got_error *err = NULL;
1340 	char *gitconfig_path = NULL;
1341 	char *gitconfig = NULL;
1342 	FILE *gitconfig_file = NULL;
1343 	char *branches = NULL, *refs = NULL;
1344 	const char *branchname;
1345 	ssize_t n;
1346 
1347 	/* Create a config file Git can understand. */
1348 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1349 	if (gitconfig_path == NULL) {
1350 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1351 		goto done;
1352 	}
1353 	gitconfig_file = fopen(gitconfig_path, "ae");
1354 	if (gitconfig_file == NULL) {
1355 		err = got_error_from_errno2("fopen", gitconfig_path);
1356 		goto done;
1357 	}
1358 	if (fetch_all_branches) {
1359 		if (mirror_references) {
1360 			if (asprintf(&branches,
1361 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1362 				err = got_error_from_errno("asprintf");
1363 				goto done;
1364 			}
1365 		} else if (asprintf(&branches,
1366 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1367 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1368 			err = got_error_from_errno("asprintf");
1369 			goto done;
1370 		}
1371 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1372 		struct got_pathlist_entry *pe;
1373 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1374 			char *s;
1375 			branchname = pe->path;
1376 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1377 				branchname += 11;
1378 			if (mirror_references) {
1379 				if (asprintf(&s,
1380 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1381 				    branches ? branches : "",
1382 				    branchname, branchname) == -1) {
1383 					err = got_error_from_errno("asprintf");
1384 					goto done;
1385 				}
1386 			} else if (asprintf(&s,
1387 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1388 			    branches ? branches : "",
1389 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1390 			    branchname) == -1) {
1391 				err = got_error_from_errno("asprintf");
1392 				goto done;
1393 			}
1394 			free(branches);
1395 			branches = s;
1396 		}
1397 	} else {
1398 		/*
1399 		 * If the server specified a default branch, use just that one.
1400 		 * Otherwise fall back to fetching all branches on next fetch.
1401 		 */
1402 		if (default_branch) {
1403 			branchname = default_branch;
1404 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1405 				branchname += 11;
1406 		} else
1407 			branchname = "*"; /* fall back to all branches */
1408 		if (mirror_references) {
1409 			if (asprintf(&branches,
1410 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1411 			    branchname, branchname) == -1) {
1412 				err = got_error_from_errno("asprintf");
1413 				goto done;
1414 			}
1415 		} else if (asprintf(&branches,
1416 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1417 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1418 		    branchname) == -1) {
1419 			err = got_error_from_errno("asprintf");
1420 			goto done;
1421 		}
1422 	}
1423 	if (!TAILQ_EMPTY(wanted_refs)) {
1424 		struct got_pathlist_entry *pe;
1425 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1426 			char *s;
1427 			const char *refname = pe->path;
1428 			if (strncmp(refname, "refs/", 5) == 0)
1429 				refname += 5;
1430 			if (mirror_references) {
1431 				if (asprintf(&s,
1432 				    "%s\tfetch = refs/%s:refs/%s\n",
1433 				    refs ? refs : "", refname, refname) == -1) {
1434 					err = got_error_from_errno("asprintf");
1435 					goto done;
1436 				}
1437 			} else if (asprintf(&s,
1438 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1439 			    refs ? refs : "",
1440 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1441 			    refname) == -1) {
1442 				err = got_error_from_errno("asprintf");
1443 				goto done;
1444 			}
1445 			free(refs);
1446 			refs = s;
1447 		}
1448 	}
1449 
1450 	if (asprintf(&gitconfig,
1451 	    "[remote \"%s\"]\n"
1452 	    "\turl = %s\n"
1453 	    "%s"
1454 	    "%s"
1455 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1456 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1457 	    refs ? refs : "") == -1) {
1458 		err = got_error_from_errno("asprintf");
1459 		goto done;
1460 	}
1461 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1462 	if (n != strlen(gitconfig)) {
1463 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1464 		goto done;
1465 	}
1466 done:
1467 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1468 		err = got_error_from_errno2("fclose", gitconfig_path);
1469 	free(gitconfig_path);
1470 	free(branches);
1471 	return err;
1472 }
1473 
1474 static const struct got_error *
1475 create_config_files(const char *proto, const char *host, const char *port,
1476     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1477     int mirror_references, struct got_pathlist_head *symrefs,
1478     struct got_pathlist_head *wanted_branches,
1479     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1480 {
1481 	const struct got_error *err = NULL;
1482 	const char *default_branch = NULL;
1483 	struct got_pathlist_entry *pe;
1484 
1485 	/*
1486 	 * If we asked for a set of wanted branches then use the first
1487 	 * one of those.
1488 	 */
1489 	if (!TAILQ_EMPTY(wanted_branches)) {
1490 		pe = TAILQ_FIRST(wanted_branches);
1491 		default_branch = pe->path;
1492 	} else {
1493 		/* First HEAD ref listed by server is the default branch. */
1494 		TAILQ_FOREACH(pe, symrefs, entry) {
1495 			const char *refname = pe->path;
1496 			const char *target = pe->data;
1497 
1498 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1499 				continue;
1500 
1501 			default_branch = target;
1502 			break;
1503 		}
1504 	}
1505 
1506 	/* Create got.conf(5). */
1507 	err = create_gotconfig(proto, host, port, remote_repo_path,
1508 	    default_branch, fetch_all_branches, wanted_branches,
1509 	    wanted_refs, mirror_references, repo);
1510 	if (err)
1511 		return err;
1512 
1513 	/* Create a config file Git can understand. */
1514 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1515 	    wanted_branches, wanted_refs, mirror_references, repo);
1516 }
1517 
1518 static const struct got_error *
1519 cmd_clone(int argc, char *argv[])
1520 {
1521 	const struct got_error *error = NULL;
1522 	const char *uri, *dirname;
1523 	char *proto, *host, *port, *repo_name, *server_path;
1524 	char *default_destdir = NULL, *id_str = NULL;
1525 	const char *repo_path;
1526 	struct got_repository *repo = NULL;
1527 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1528 	struct got_pathlist_entry *pe;
1529 	struct got_object_id *pack_hash = NULL;
1530 	int ch, fetchfd = -1, fetchstatus;
1531 	pid_t fetchpid = -1;
1532 	struct got_fetch_progress_arg fpa;
1533 	char *git_url = NULL;
1534 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1535 	int bflag = 0, list_refs_only = 0;
1536 	int *pack_fds = NULL;
1537 
1538 	TAILQ_INIT(&refs);
1539 	TAILQ_INIT(&symrefs);
1540 	TAILQ_INIT(&wanted_branches);
1541 	TAILQ_INIT(&wanted_refs);
1542 
1543 	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
1544 		switch (ch) {
1545 		case 'a':
1546 			fetch_all_branches = 1;
1547 			break;
1548 		case 'b':
1549 			error = got_pathlist_append(&wanted_branches,
1550 			    optarg, NULL);
1551 			if (error)
1552 				return error;
1553 			bflag = 1;
1554 			break;
1555 		case 'l':
1556 			list_refs_only = 1;
1557 			break;
1558 		case 'm':
1559 			mirror_references = 1;
1560 			break;
1561 		case 'q':
1562 			verbosity = -1;
1563 			break;
1564 		case 'R':
1565 			error = got_pathlist_append(&wanted_refs,
1566 			    optarg, NULL);
1567 			if (error)
1568 				return error;
1569 			break;
1570 		case 'v':
1571 			if (verbosity < 0)
1572 				verbosity = 0;
1573 			else if (verbosity < 3)
1574 				verbosity++;
1575 			break;
1576 		default:
1577 			usage_clone();
1578 			break;
1579 		}
1580 	}
1581 	argc -= optind;
1582 	argv += optind;
1583 
1584 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1585 		option_conflict('a', 'b');
1586 	if (list_refs_only) {
1587 		if (!TAILQ_EMPTY(&wanted_branches))
1588 			option_conflict('l', 'b');
1589 		if (fetch_all_branches)
1590 			option_conflict('l', 'a');
1591 		if (mirror_references)
1592 			option_conflict('l', 'm');
1593 		if (!TAILQ_EMPTY(&wanted_refs))
1594 			option_conflict('l', 'R');
1595 	}
1596 
1597 	uri = argv[0];
1598 
1599 	if (argc == 1)
1600 		dirname = NULL;
1601 	else if (argc == 2)
1602 		dirname = argv[1];
1603 	else
1604 		usage_clone();
1605 
1606 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1607 	    &repo_name, uri);
1608 	if (error)
1609 		goto done;
1610 
1611 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1612 	    host, port ? ":" : "", port ? port : "",
1613 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1614 		error = got_error_from_errno("asprintf");
1615 		goto done;
1616 	}
1617 
1618 	if (strcmp(proto, "git") == 0) {
1619 #ifndef PROFILE
1620 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1621 		    "sendfd dns inet unveil", NULL) == -1)
1622 			err(1, "pledge");
1623 #endif
1624 	} else if (strcmp(proto, "git+ssh") == 0 ||
1625 	    strcmp(proto, "ssh") == 0) {
1626 #ifndef PROFILE
1627 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1628 		    "sendfd unveil", NULL) == -1)
1629 			err(1, "pledge");
1630 #endif
1631 	} else if (strcmp(proto, "http") == 0 ||
1632 	    strcmp(proto, "git+http") == 0) {
1633 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1634 		goto done;
1635 	} else {
1636 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1637 		goto done;
1638 	}
1639 	if (dirname == NULL) {
1640 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1641 			error = got_error_from_errno("asprintf");
1642 			goto done;
1643 		}
1644 		repo_path = default_destdir;
1645 	} else
1646 		repo_path = dirname;
1647 
1648 	if (!list_refs_only) {
1649 		error = got_path_mkdir(repo_path);
1650 		if (error &&
1651 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1652 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1653 			goto done;
1654 		if (!got_path_dir_is_empty(repo_path)) {
1655 			error = got_error_path(repo_path,
1656 			    GOT_ERR_DIR_NOT_EMPTY);
1657 			goto done;
1658 		}
1659 	}
1660 
1661 	error = got_dial_apply_unveil(proto);
1662 	if (error)
1663 		goto done;
1664 
1665 	error = apply_unveil(repo_path, 0, NULL);
1666 	if (error)
1667 		goto done;
1668 
1669 	if (verbosity >= 0)
1670 		printf("Connecting to %s\n", git_url);
1671 
1672 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1673 	    server_path, verbosity);
1674 	if (error)
1675 		goto done;
1676 
1677 	if (!list_refs_only) {
1678 		error = got_repo_init(repo_path, NULL);
1679 		if (error)
1680 			goto done;
1681 		error = got_repo_pack_fds_open(&pack_fds);
1682 		if (error != NULL)
1683 			goto done;
1684 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1685 		if (error)
1686 			goto done;
1687 	}
1688 
1689 	fpa.last_scaled_size[0] = '\0';
1690 	fpa.last_p_indexed = -1;
1691 	fpa.last_p_resolved = -1;
1692 	fpa.verbosity = verbosity;
1693 	fpa.create_configs = 1;
1694 	fpa.configs_created = 0;
1695 	fpa.repo = repo;
1696 	fpa.config_info.symrefs = &symrefs;
1697 	fpa.config_info.wanted_branches = &wanted_branches;
1698 	fpa.config_info.wanted_refs = &wanted_refs;
1699 	fpa.config_info.proto = proto;
1700 	fpa.config_info.host = host;
1701 	fpa.config_info.port = port;
1702 	fpa.config_info.remote_repo_path = server_path;
1703 	fpa.config_info.git_url = git_url;
1704 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1705 	fpa.config_info.mirror_references = mirror_references;
1706 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1707 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1708 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1709 	    list_refs_only, verbosity, fetchfd, repo, NULL, NULL, bflag,
1710 	    fetch_progress, &fpa);
1711 	if (error)
1712 		goto done;
1713 
1714 	if (list_refs_only) {
1715 		error = list_remote_refs(&symrefs, &refs);
1716 		goto done;
1717 	}
1718 
1719 	if (pack_hash == NULL) {
1720 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1721 		    "server sent an empty pack file");
1722 		goto done;
1723 	}
1724 	error = got_object_id_str(&id_str, pack_hash);
1725 	if (error)
1726 		goto done;
1727 	if (verbosity >= 0)
1728 		printf("\nFetched %s.pack\n", id_str);
1729 	free(id_str);
1730 
1731 	/* Set up references provided with the pack file. */
1732 	TAILQ_FOREACH(pe, &refs, entry) {
1733 		const char *refname = pe->path;
1734 		struct got_object_id *id = pe->data;
1735 		char *remote_refname;
1736 
1737 		if (is_wanted_ref(&wanted_refs, refname) &&
1738 		    !mirror_references) {
1739 			error = create_wanted_ref(refname, id,
1740 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1741 			    verbosity - 1, repo);
1742 			if (error)
1743 				goto done;
1744 			continue;
1745 		}
1746 
1747 		error = create_ref(refname, id, verbosity - 1, repo);
1748 		if (error)
1749 			goto done;
1750 
1751 		if (mirror_references)
1752 			continue;
1753 
1754 		if (strncmp("refs/heads/", refname, 11) != 0)
1755 			continue;
1756 
1757 		if (asprintf(&remote_refname,
1758 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1759 		    refname + 11) == -1) {
1760 			error = got_error_from_errno("asprintf");
1761 			goto done;
1762 		}
1763 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1764 		free(remote_refname);
1765 		if (error)
1766 			goto done;
1767 	}
1768 
1769 	/* Set the HEAD reference if the server provided one. */
1770 	TAILQ_FOREACH(pe, &symrefs, entry) {
1771 		struct got_reference *target_ref;
1772 		const char *refname = pe->path;
1773 		const char *target = pe->data;
1774 		char *remote_refname = NULL, *remote_target = NULL;
1775 
1776 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1777 			continue;
1778 
1779 		error = got_ref_open(&target_ref, repo, target, 0);
1780 		if (error) {
1781 			if (error->code == GOT_ERR_NOT_REF) {
1782 				error = NULL;
1783 				continue;
1784 			}
1785 			goto done;
1786 		}
1787 
1788 		error = create_symref(refname, target_ref, verbosity, repo);
1789 		got_ref_close(target_ref);
1790 		if (error)
1791 			goto done;
1792 
1793 		if (mirror_references)
1794 			continue;
1795 
1796 		if (strncmp("refs/heads/", target, 11) != 0)
1797 			continue;
1798 
1799 		if (asprintf(&remote_refname,
1800 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1801 		    refname) == -1) {
1802 			error = got_error_from_errno("asprintf");
1803 			goto done;
1804 		}
1805 		if (asprintf(&remote_target,
1806 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1807 		    target + 11) == -1) {
1808 			error = got_error_from_errno("asprintf");
1809 			free(remote_refname);
1810 			goto done;
1811 		}
1812 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1813 		if (error) {
1814 			free(remote_refname);
1815 			free(remote_target);
1816 			if (error->code == GOT_ERR_NOT_REF) {
1817 				error = NULL;
1818 				continue;
1819 			}
1820 			goto done;
1821 		}
1822 		error = create_symref(remote_refname, target_ref,
1823 		    verbosity - 1, repo);
1824 		free(remote_refname);
1825 		free(remote_target);
1826 		got_ref_close(target_ref);
1827 		if (error)
1828 			goto done;
1829 	}
1830 	if (pe == NULL) {
1831 		/*
1832 		 * We failed to set the HEAD reference. If we asked for
1833 		 * a set of wanted branches use the first of one of those
1834 		 * which could be fetched instead.
1835 		 */
1836 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1837 			const char *target = pe->path;
1838 			struct got_reference *target_ref;
1839 
1840 			error = got_ref_open(&target_ref, repo, target, 0);
1841 			if (error) {
1842 				if (error->code == GOT_ERR_NOT_REF) {
1843 					error = NULL;
1844 					continue;
1845 				}
1846 				goto done;
1847 			}
1848 
1849 			error = create_symref(GOT_REF_HEAD, target_ref,
1850 			    verbosity, repo);
1851 			got_ref_close(target_ref);
1852 			if (error)
1853 				goto done;
1854 			break;
1855 		}
1856 
1857 		if (!fpa.configs_created && pe != NULL) {
1858 			error = create_config_files(fpa.config_info.proto,
1859 			    fpa.config_info.host, fpa.config_info.port,
1860 			    fpa.config_info.remote_repo_path,
1861 			    fpa.config_info.git_url,
1862 			    fpa.config_info.fetch_all_branches,
1863 			    fpa.config_info.mirror_references,
1864 			    fpa.config_info.symrefs,
1865 			    fpa.config_info.wanted_branches,
1866 			    fpa.config_info.wanted_refs, fpa.repo);
1867 			if (error)
1868 				goto done;
1869 		}
1870 	}
1871 
1872 	if (verbosity >= 0)
1873 		printf("Created %s repository '%s'\n",
1874 		    mirror_references ? "mirrored" : "cloned", repo_path);
1875 done:
1876 	if (pack_fds) {
1877 		const struct got_error *pack_err =
1878 		    got_repo_pack_fds_close(pack_fds);
1879 		if (error == NULL)
1880 			error = pack_err;
1881 	}
1882 	if (fetchpid > 0) {
1883 		if (kill(fetchpid, SIGTERM) == -1)
1884 			error = got_error_from_errno("kill");
1885 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1886 			error = got_error_from_errno("waitpid");
1887 	}
1888 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1889 		error = got_error_from_errno("close");
1890 	if (repo) {
1891 		const struct got_error *close_err = got_repo_close(repo);
1892 		if (error == NULL)
1893 			error = close_err;
1894 	}
1895 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
1896 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
1897 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
1898 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
1899 	free(pack_hash);
1900 	free(proto);
1901 	free(host);
1902 	free(port);
1903 	free(server_path);
1904 	free(repo_name);
1905 	free(default_destdir);
1906 	free(git_url);
1907 	return error;
1908 }
1909 
1910 static const struct got_error *
1911 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1912     int replace_tags, int verbosity, struct got_repository *repo)
1913 {
1914 	const struct got_error *err = NULL;
1915 	char *new_id_str = NULL;
1916 	struct got_object_id *old_id = NULL;
1917 
1918 	err = got_object_id_str(&new_id_str, new_id);
1919 	if (err)
1920 		goto done;
1921 
1922 	if (!replace_tags &&
1923 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1924 		err = got_ref_resolve(&old_id, repo, ref);
1925 		if (err)
1926 			goto done;
1927 		if (got_object_id_cmp(old_id, new_id) == 0)
1928 			goto done;
1929 		if (verbosity >= 0) {
1930 			printf("Rejecting update of existing tag %s: %s\n",
1931 			    got_ref_get_name(ref), new_id_str);
1932 		}
1933 		goto done;
1934 	}
1935 
1936 	if (got_ref_is_symbolic(ref)) {
1937 		if (verbosity >= 0) {
1938 			printf("Replacing reference %s: %s\n",
1939 			    got_ref_get_name(ref),
1940 			    got_ref_get_symref_target(ref));
1941 		}
1942 		err = got_ref_change_symref_to_ref(ref, new_id);
1943 		if (err)
1944 			goto done;
1945 		err = got_ref_write(ref, repo);
1946 		if (err)
1947 			goto done;
1948 	} else {
1949 		err = got_ref_resolve(&old_id, repo, ref);
1950 		if (err)
1951 			goto done;
1952 		if (got_object_id_cmp(old_id, new_id) == 0)
1953 			goto done;
1954 
1955 		err = got_ref_change_ref(ref, new_id);
1956 		if (err)
1957 			goto done;
1958 		err = got_ref_write(ref, repo);
1959 		if (err)
1960 			goto done;
1961 	}
1962 
1963 	if (verbosity >= 0)
1964 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1965 		    new_id_str);
1966 done:
1967 	free(old_id);
1968 	free(new_id_str);
1969 	return err;
1970 }
1971 
1972 static const struct got_error *
1973 update_wanted_ref(const char *refname, struct got_object_id *id,
1974     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1975 {
1976 	const struct got_error *err, *unlock_err;
1977 	char *remote_refname;
1978 	struct got_reference *ref;
1979 
1980 	if (strncmp("refs/", refname, 5) == 0)
1981 		refname += 5;
1982 
1983 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1984 	    remote_repo_name, refname) == -1)
1985 		return got_error_from_errno("asprintf");
1986 
1987 	err = got_ref_open(&ref, repo, remote_refname, 1);
1988 	if (err) {
1989 		if (err->code != GOT_ERR_NOT_REF)
1990 			goto done;
1991 		err = create_ref(remote_refname, id, verbosity, repo);
1992 	} else {
1993 		err = update_ref(ref, id, 0, verbosity, repo);
1994 		unlock_err = got_ref_unlock(ref);
1995 		if (unlock_err && err == NULL)
1996 			err = unlock_err;
1997 		got_ref_close(ref);
1998 	}
1999 done:
2000 	free(remote_refname);
2001 	return err;
2002 }
2003 
2004 __dead static void
2005 usage_checkout(void)
2006 {
2007 	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
2008 	    "[-p path-prefix] repository-path [work-tree-path]\n",
2009 	    getprogname());
2010 	exit(1);
2011 }
2012 
2013 static void
2014 show_worktree_base_ref_warning(void)
2015 {
2016 	fprintf(stderr, "%s: warning: could not create a reference "
2017 	    "to the work tree's base commit; the commit could be "
2018 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2019 	    "repository writable and running 'got update' will prevent this\n",
2020 	    getprogname());
2021 }
2022 
2023 struct got_checkout_progress_arg {
2024 	const char *worktree_path;
2025 	int had_base_commit_ref_error;
2026 	int verbosity;
2027 };
2028 
2029 static const struct got_error *
2030 checkout_progress(void *arg, unsigned char status, const char *path)
2031 {
2032 	struct got_checkout_progress_arg *a = arg;
2033 
2034 	/* Base commit bump happens silently. */
2035 	if (status == GOT_STATUS_BUMP_BASE)
2036 		return NULL;
2037 
2038 	if (status == GOT_STATUS_BASE_REF_ERR) {
2039 		a->had_base_commit_ref_error = 1;
2040 		return NULL;
2041 	}
2042 
2043 	while (path[0] == '/')
2044 		path++;
2045 
2046 	if (a->verbosity >= 0)
2047 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2048 
2049 	return NULL;
2050 }
2051 
2052 static const struct got_error *
2053 check_cancelled(void *arg)
2054 {
2055 	if (sigint_received || sigpipe_received)
2056 		return got_error(GOT_ERR_CANCELLED);
2057 	return NULL;
2058 }
2059 
2060 static const struct got_error *
2061 check_linear_ancestry(struct got_object_id *commit_id,
2062     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2063     struct got_repository *repo)
2064 {
2065 	const struct got_error *err = NULL;
2066 	struct got_object_id *yca_id;
2067 
2068 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2069 	    commit_id, base_commit_id, 1, 0, repo, check_cancelled, NULL);
2070 	if (err)
2071 		return err;
2072 
2073 	if (yca_id == NULL)
2074 		return got_error(GOT_ERR_ANCESTRY);
2075 
2076 	/*
2077 	 * Require a straight line of history between the target commit
2078 	 * and the work tree's base commit.
2079 	 *
2080 	 * Non-linear situations such as this require a rebase:
2081 	 *
2082 	 * (commit) D       F (base_commit)
2083 	 *           \     /
2084 	 *            C   E
2085 	 *             \ /
2086 	 *              B (yca)
2087 	 *              |
2088 	 *              A
2089 	 *
2090 	 * 'got update' only handles linear cases:
2091 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2092 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2093 	 */
2094 	if (allow_forwards_in_time_only) {
2095 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2096 		return got_error(GOT_ERR_ANCESTRY);
2097 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2098 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2099 		return got_error(GOT_ERR_ANCESTRY);
2100 
2101 	free(yca_id);
2102 	return NULL;
2103 }
2104 
2105 static const struct got_error *
2106 check_same_branch(struct got_object_id *commit_id,
2107     struct got_reference *head_ref, struct got_repository *repo)
2108 {
2109 	const struct got_error *err = NULL;
2110 	struct got_commit_graph *graph = NULL;
2111 	struct got_object_id *head_commit_id = NULL;
2112 
2113 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2114 	if (err)
2115 		goto done;
2116 
2117 	if (got_object_id_cmp(head_commit_id, commit_id) == 0)
2118 		goto done;
2119 
2120 	err = got_commit_graph_open(&graph, "/", 1);
2121 	if (err)
2122 		goto done;
2123 
2124 	err = got_commit_graph_bfsort(graph, head_commit_id, repo,
2125 	    check_cancelled, NULL);
2126 	if (err)
2127 		goto done;
2128 
2129 	for (;;) {
2130 		struct got_object_id id;
2131 
2132 		err = got_commit_graph_iter_next(&id, graph, repo,
2133 		    check_cancelled, NULL);
2134 		if (err) {
2135 			if (err->code == GOT_ERR_ITER_COMPLETED)
2136 				err = got_error(GOT_ERR_ANCESTRY);
2137 			break;
2138 		}
2139 
2140 		if (got_object_id_cmp(&id, commit_id) == 0)
2141 			break;
2142 	}
2143 done:
2144 	if (graph)
2145 		got_commit_graph_close(graph);
2146 	free(head_commit_id);
2147 	return err;
2148 }
2149 
2150 static const struct got_error *
2151 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2152 {
2153 	static char msg[512];
2154 	const char *branch_name;
2155 
2156 	if (got_ref_is_symbolic(ref))
2157 		branch_name = got_ref_get_symref_target(ref);
2158 	else
2159 		branch_name = got_ref_get_name(ref);
2160 
2161 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2162 		branch_name += 11;
2163 
2164 	snprintf(msg, sizeof(msg),
2165 	    "target commit is not contained in branch '%s'; "
2166 	    "the branch to use must be specified with -b; "
2167 	    "if necessary a new branch can be created for "
2168 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2169 	    branch_name, commit_id_str);
2170 
2171 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2172 }
2173 
2174 static const struct got_error *
2175 cmd_checkout(int argc, char *argv[])
2176 {
2177 	const struct got_error *error = NULL;
2178 	struct got_repository *repo = NULL;
2179 	struct got_reference *head_ref = NULL, *ref = NULL;
2180 	struct got_worktree *worktree = NULL;
2181 	char *repo_path = NULL;
2182 	char *worktree_path = NULL;
2183 	const char *path_prefix = "";
2184 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2185 	char *commit_id_str = NULL;
2186 	struct got_object_id *commit_id = NULL;
2187 	char *cwd = NULL;
2188 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2189 	struct got_pathlist_head paths;
2190 	struct got_checkout_progress_arg cpa;
2191 	int *pack_fds = NULL;
2192 
2193 	TAILQ_INIT(&paths);
2194 
2195 #ifndef PROFILE
2196 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2197 	    "unveil", NULL) == -1)
2198 		err(1, "pledge");
2199 #endif
2200 
2201 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
2202 		switch (ch) {
2203 		case 'b':
2204 			branch_name = optarg;
2205 			break;
2206 		case 'c':
2207 			commit_id_str = strdup(optarg);
2208 			if (commit_id_str == NULL)
2209 				return got_error_from_errno("strdup");
2210 			break;
2211 		case 'E':
2212 			allow_nonempty = 1;
2213 			break;
2214 		case 'p':
2215 			path_prefix = optarg;
2216 			break;
2217 		case 'q':
2218 			verbosity = -1;
2219 			break;
2220 		default:
2221 			usage_checkout();
2222 			/* NOTREACHED */
2223 		}
2224 	}
2225 
2226 	argc -= optind;
2227 	argv += optind;
2228 
2229 	if (argc == 1) {
2230 		char *base, *dotgit;
2231 		const char *path;
2232 		repo_path = realpath(argv[0], NULL);
2233 		if (repo_path == NULL)
2234 			return got_error_from_errno2("realpath", argv[0]);
2235 		cwd = getcwd(NULL, 0);
2236 		if (cwd == NULL) {
2237 			error = got_error_from_errno("getcwd");
2238 			goto done;
2239 		}
2240 		if (path_prefix[0])
2241 			path = path_prefix;
2242 		else
2243 			path = repo_path;
2244 		error = got_path_basename(&base, path);
2245 		if (error)
2246 			goto done;
2247 		dotgit = strstr(base, ".git");
2248 		if (dotgit)
2249 			*dotgit = '\0';
2250 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
2251 			error = got_error_from_errno("asprintf");
2252 			free(base);
2253 			goto done;
2254 		}
2255 		free(base);
2256 	} else if (argc == 2) {
2257 		repo_path = realpath(argv[0], NULL);
2258 		if (repo_path == NULL) {
2259 			error = got_error_from_errno2("realpath", argv[0]);
2260 			goto done;
2261 		}
2262 		worktree_path = realpath(argv[1], NULL);
2263 		if (worktree_path == NULL) {
2264 			if (errno != ENOENT) {
2265 				error = got_error_from_errno2("realpath",
2266 				    argv[1]);
2267 				goto done;
2268 			}
2269 			worktree_path = strdup(argv[1]);
2270 			if (worktree_path == NULL) {
2271 				error = got_error_from_errno("strdup");
2272 				goto done;
2273 			}
2274 		}
2275 	} else
2276 		usage_checkout();
2277 
2278 	got_path_strip_trailing_slashes(repo_path);
2279 	got_path_strip_trailing_slashes(worktree_path);
2280 
2281 	error = got_repo_pack_fds_open(&pack_fds);
2282 	if (error != NULL)
2283 		goto done;
2284 
2285 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2286 	if (error != NULL)
2287 		goto done;
2288 
2289 	/* Pre-create work tree path for unveil(2) */
2290 	error = got_path_mkdir(worktree_path);
2291 	if (error) {
2292 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
2293 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2294 			goto done;
2295 		if (!allow_nonempty &&
2296 		    !got_path_dir_is_empty(worktree_path)) {
2297 			error = got_error_path(worktree_path,
2298 			    GOT_ERR_DIR_NOT_EMPTY);
2299 			goto done;
2300 		}
2301 	}
2302 
2303 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
2304 	if (error)
2305 		goto done;
2306 
2307 	error = got_ref_open(&head_ref, repo, branch_name, 0);
2308 	if (error != NULL)
2309 		goto done;
2310 
2311 	error = got_worktree_init(worktree_path, head_ref, path_prefix,
2312 	    GOT_WORKTREE_CVG_DIR, repo);
2313 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2314 		goto done;
2315 
2316 	error = got_worktree_open(&worktree, worktree_path, GOT_WORKTREE_CVG_DIR);
2317 	if (error != NULL)
2318 		goto done;
2319 
2320 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
2321 	    path_prefix);
2322 	if (error != NULL)
2323 		goto done;
2324 	if (!same_path_prefix) {
2325 		error = got_error(GOT_ERR_PATH_PREFIX);
2326 		goto done;
2327 	}
2328 
2329 	if (commit_id_str) {
2330 		struct got_reflist_head refs;
2331 		TAILQ_INIT(&refs);
2332 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
2333 		    NULL);
2334 		if (error)
2335 			goto done;
2336 		error = got_repo_match_object_id(&commit_id, NULL,
2337 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
2338 		got_ref_list_free(&refs);
2339 		if (error)
2340 			goto done;
2341 		error = check_linear_ancestry(commit_id,
2342 		    got_worktree_get_base_commit_id(worktree), 0, repo);
2343 		if (error != NULL) {
2344 			if (error->code == GOT_ERR_ANCESTRY) {
2345 				error = checkout_ancestry_error(
2346 				    head_ref, commit_id_str);
2347 			}
2348 			goto done;
2349 		}
2350 		error = check_same_branch(commit_id, head_ref, repo);
2351 		if (error) {
2352 			if (error->code == GOT_ERR_ANCESTRY) {
2353 				error = checkout_ancestry_error(
2354 				    head_ref, commit_id_str);
2355 			}
2356 			goto done;
2357 		}
2358 		error = got_worktree_set_base_commit_id(worktree, repo,
2359 		    commit_id);
2360 		if (error)
2361 			goto done;
2362 		/* Expand potentially abbreviated commit ID string. */
2363 		free(commit_id_str);
2364 		error = got_object_id_str(&commit_id_str, commit_id);
2365 		if (error)
2366 			goto done;
2367 	} else {
2368 		commit_id = got_object_id_dup(
2369 		    got_worktree_get_base_commit_id(worktree));
2370 		if (commit_id == NULL) {
2371 			error = got_error_from_errno("got_object_id_dup");
2372 			goto done;
2373 		}
2374 		error = got_object_id_str(&commit_id_str, commit_id);
2375 		if (error)
2376 			goto done;
2377 	}
2378 
2379 	error = got_pathlist_append(&paths, "", NULL);
2380 	if (error)
2381 		goto done;
2382 	cpa.worktree_path = worktree_path;
2383 	cpa.had_base_commit_ref_error = 0;
2384 	cpa.verbosity = verbosity;
2385 	error = got_worktree_checkout_files(worktree, &paths, repo,
2386 	    checkout_progress, &cpa, check_cancelled, NULL);
2387 	if (error != NULL)
2388 		goto done;
2389 
2390 	if (got_ref_is_symbolic(head_ref)) {
2391 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
2392 		if (error)
2393 			goto done;
2394 		refname = got_ref_get_name(ref);
2395 	} else
2396 		refname = got_ref_get_name(head_ref);
2397 	printf("Checked out %s: %s\n", refname, commit_id_str);
2398 	printf("Now shut up and hack\n");
2399 	if (cpa.had_base_commit_ref_error)
2400 		show_worktree_base_ref_warning();
2401 done:
2402 	if (pack_fds) {
2403 		const struct got_error *pack_err =
2404 		    got_repo_pack_fds_close(pack_fds);
2405 		if (error == NULL)
2406 			error = pack_err;
2407 	}
2408 	if (head_ref)
2409 		got_ref_close(head_ref);
2410 	if (ref)
2411 		got_ref_close(ref);
2412 	if (repo) {
2413 		const struct got_error *close_err = got_repo_close(repo);
2414 		if (error == NULL)
2415 			error = close_err;
2416 	}
2417 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
2418 	free(commit_id_str);
2419 	free(commit_id);
2420 	free(repo_path);
2421 	free(worktree_path);
2422 	free(cwd);
2423 	return error;
2424 }
2425 
2426 struct got_update_progress_arg {
2427 	int did_something;
2428 	int conflicts;
2429 	int obstructed;
2430 	int not_updated;
2431 	int missing;
2432 	int not_deleted;
2433 	int unversioned;
2434 	int verbosity;
2435 };
2436 
2437 static void
2438 print_update_progress_stats(struct got_update_progress_arg *upa)
2439 {
2440 	if (!upa->did_something)
2441 		return;
2442 
2443 	if (upa->conflicts > 0)
2444 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
2445 	if (upa->obstructed > 0)
2446 		printf("File paths obstructed by a non-regular file: %d\n",
2447 		    upa->obstructed);
2448 	if (upa->not_updated > 0)
2449 		printf("Files not updated because of existing merge "
2450 		    "conflicts: %d\n", upa->not_updated);
2451 }
2452 
2453 /*
2454  * The meaning of some status codes differs between merge-style operations and
2455  * update operations. For example, the ! status code means "file was missing"
2456  * if changes were merged into the work tree, and "missing file was restored"
2457  * if the work tree was updated. This function should be used by any operation
2458  * which merges changes into the work tree without updating the work tree.
2459  */
2460 static void
2461 print_merge_progress_stats(struct got_update_progress_arg *upa)
2462 {
2463 	if (!upa->did_something)
2464 		return;
2465 
2466 	if (upa->conflicts > 0)
2467 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
2468 	if (upa->obstructed > 0)
2469 		printf("File paths obstructed by a non-regular file: %d\n",
2470 		    upa->obstructed);
2471 	if (upa->missing > 0)
2472 		printf("Files which had incoming changes but could not be "
2473 		    "found in the work tree: %d\n", upa->missing);
2474 	if (upa->not_deleted > 0)
2475 		printf("Files not deleted due to differences in deleted "
2476 		    "content: %d\n", upa->not_deleted);
2477 	if (upa->unversioned > 0)
2478 		printf("Files not merged because an unversioned file was "
2479 		    "found in the work tree: %d\n", upa->unversioned);
2480 }
2481 
2482 __dead static void
2483 usage_update(void)
2484 {
2485 	fprintf(stderr, "usage: %s update [-qtvX] [-c commit] [-r remote] "
2486 	    "[path ...]\n", getprogname());
2487 	exit(1);
2488 }
2489 
2490 static const struct got_error *
2491 update_progress(void *arg, unsigned char status, const char *path)
2492 {
2493 	struct got_update_progress_arg *upa = arg;
2494 
2495 	if (status == GOT_STATUS_EXISTS ||
2496 	    status == GOT_STATUS_BASE_REF_ERR)
2497 		return NULL;
2498 
2499 	upa->did_something = 1;
2500 
2501 	/* Base commit bump happens silently. */
2502 	if (status == GOT_STATUS_BUMP_BASE)
2503 		return NULL;
2504 
2505 	if (status == GOT_STATUS_CONFLICT)
2506 		upa->conflicts++;
2507 	if (status == GOT_STATUS_OBSTRUCTED)
2508 		upa->obstructed++;
2509 	if (status == GOT_STATUS_CANNOT_UPDATE)
2510 		upa->not_updated++;
2511 	if (status == GOT_STATUS_MISSING)
2512 		upa->missing++;
2513 	if (status == GOT_STATUS_CANNOT_DELETE)
2514 		upa->not_deleted++;
2515 	if (status == GOT_STATUS_UNVERSIONED)
2516 		upa->unversioned++;
2517 
2518 	while (path[0] == '/')
2519 		path++;
2520 	if (upa->verbosity >= 0)
2521 		printf("%c  %s\n", status, path);
2522 
2523 	return NULL;
2524 }
2525 
2526 static const struct got_error *
2527 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
2528 {
2529 	const struct got_error *err;
2530 	int in_progress;
2531 
2532 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
2533 	if (err)
2534 		return err;
2535 	if (in_progress)
2536 		return got_error(GOT_ERR_REBASING);
2537 
2538 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
2539 	if (err)
2540 		return err;
2541 	if (in_progress)
2542 		return got_error(GOT_ERR_HISTEDIT_BUSY);
2543 
2544 	return NULL;
2545 }
2546 
2547 static const struct got_error *
2548 check_merge_in_progress(struct got_worktree *worktree,
2549     struct got_repository *repo)
2550 {
2551 	const struct got_error *err;
2552 	int in_progress;
2553 
2554 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
2555 	if (err)
2556 		return err;
2557 	if (in_progress)
2558 		return got_error(GOT_ERR_MERGE_BUSY);
2559 
2560 	return NULL;
2561 }
2562 
2563 static const struct got_error *
2564 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
2565     char *argv[], struct got_worktree *worktree)
2566 {
2567 	const struct got_error *err = NULL;
2568 	char *path;
2569 	struct got_pathlist_entry *new;
2570 	int i;
2571 
2572 	if (argc == 0) {
2573 		path = strdup("");
2574 		if (path == NULL)
2575 			return got_error_from_errno("strdup");
2576 		return got_pathlist_append(paths, path, NULL);
2577 	}
2578 
2579 	for (i = 0; i < argc; i++) {
2580 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
2581 		if (err)
2582 			break;
2583 		err = got_pathlist_insert(&new, paths, path, NULL);
2584 		if (err || new == NULL /* duplicate */) {
2585 			free(path);
2586 			if (err)
2587 				break;
2588 		}
2589 	}
2590 
2591 	return err;
2592 }
2593 
2594 static const struct got_error *
2595 wrap_not_worktree_error(const struct got_error *orig_err,
2596     const char *cmdname, const char *path)
2597 {
2598 	const struct got_error *err;
2599 	struct got_repository *repo;
2600 	static char msg[512];
2601 	int *pack_fds = NULL;
2602 
2603 	err = got_repo_pack_fds_open(&pack_fds);
2604 	if (err)
2605 		return err;
2606 
2607 	err = got_repo_open(&repo, path, NULL, pack_fds);
2608 	if (err)
2609 		return orig_err;
2610 
2611 	snprintf(msg, sizeof(msg),
2612 	    "'got %s' needs a work tree in addition to a git repository\n"
2613 	    "Work trees can be checked out from this Git repository with "
2614 	    "'got checkout'.\n"
2615 	    "The got(1) manual page contains more information.", cmdname);
2616 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
2617 	if (repo) {
2618 		const struct got_error *close_err = got_repo_close(repo);
2619 		if (err == NULL)
2620 			err = close_err;
2621 	}
2622 	if (pack_fds) {
2623 		const struct got_error *pack_err =
2624 		    got_repo_pack_fds_close(pack_fds);
2625 		if (err == NULL)
2626 			err = pack_err;
2627 	}
2628 	return err;
2629 }
2630 
2631 static const struct got_error *
2632 cmd_update(int argc, char *argv[])
2633 {
2634 	const struct got_error *error = NULL, *unlock_err;
2635 	char *worktree_path = NULL;
2636 	const char *repo_path = NULL;
2637 	const char *remote_name = NULL;
2638 	char *proto = NULL, *host = NULL, *port = NULL;
2639 	char *repo_name = NULL, *server_path = NULL;
2640 	const struct got_remote_repo *remotes, *remote = NULL;
2641 	int nremotes;
2642 	char *id_str = NULL;
2643 	struct got_repository *repo = NULL;
2644 	struct got_worktree *worktree = NULL;
2645 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2646 	struct got_pathlist_head paths, refs, symrefs;
2647 	struct got_pathlist_head wanted_branches, wanted_refs;
2648 	struct got_pathlist_entry *pe;
2649 	struct got_reflist_head remote_refs;
2650 	struct got_reflist_entry *re;
2651 	struct got_object_id *pack_hash = NULL;
2652 	int i, ch, fetchfd = -1, fetchstatus;
2653 	pid_t fetchpid = -1;
2654 	struct got_fetch_progress_arg fpa;
2655 	struct got_update_progress_arg upa;
2656 	int verbosity = 0;
2657 	int delete_remote = 0;
2658 	int replace_tags = 0;
2659 	int *pack_fds = NULL;
2660 	const char *remote_head = NULL, *worktree_branch = NULL;
2661 	struct got_object_id *commit_id = NULL;
2662 	char *commit_id_str = NULL;
2663 	const char *refname;
2664 	struct got_reference *head_ref = NULL;
2665 
2666 	TAILQ_INIT(&paths);
2667 	TAILQ_INIT(&refs);
2668 	TAILQ_INIT(&symrefs);
2669 	TAILQ_INIT(&remote_refs);
2670 	TAILQ_INIT(&wanted_branches);
2671 	TAILQ_INIT(&wanted_refs);
2672 
2673 	while ((ch = getopt(argc, argv, "c:qr:vX")) != -1) {
2674 		switch (ch) {
2675 		case 'c':
2676 			commit_id_str = strdup(optarg);
2677 			if (commit_id_str == NULL)
2678 				return got_error_from_errno("strdup");
2679 			break;
2680 		case 't':
2681 			replace_tags = 1;
2682 			break;
2683 		case 'q':
2684 			verbosity = -1;
2685 			break;
2686 		case 'r':
2687 			remote_name = optarg;
2688 			break;
2689 		case 'v':
2690 			if (verbosity < 0)
2691 				verbosity = 0;
2692 			else if (verbosity < 3)
2693 				verbosity++;
2694 			break;
2695 		case 'X':
2696 			delete_remote = 1;
2697 			break;
2698 		default:
2699 			usage_update();
2700 			break;
2701 		}
2702 	}
2703 	argc -= optind;
2704 	argv += optind;
2705 
2706 	if (delete_remote) {
2707 		if (replace_tags)
2708 			option_conflict('X', 't');
2709 		if (remote_name == NULL)
2710 			errx(1, "-X option requires a remote name");
2711 	}
2712 	if (remote_name == NULL)
2713 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2714 
2715 	worktree_path = getcwd(NULL, 0);
2716 	if (worktree_path == NULL) {
2717 		error = got_error_from_errno("getcwd");
2718 		goto done;
2719 	}
2720 	error = got_worktree_open(&worktree, worktree_path, GOT_WORKTREE_CVG_DIR);
2721 	if (error) {
2722 		if (error->code == GOT_ERR_NOT_WORKTREE)
2723 			error = wrap_not_worktree_error(error, "update",
2724 			    worktree_path);
2725 		goto done;
2726 	}
2727 	repo_path = got_worktree_get_repo_path(worktree);
2728 
2729 	error = got_repo_pack_fds_open(&pack_fds);
2730 	if (error != NULL)
2731 		goto done;
2732 
2733 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2734 	if (error)
2735 		goto done;
2736 
2737 	error = check_rebase_or_histedit_in_progress(worktree);
2738 	if (error)
2739 		goto done;
2740 	error = check_merge_in_progress(worktree, repo);
2741 	if (error)
2742 		goto done;
2743 
2744 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
2745 	if (error)
2746 		goto done;
2747 
2748 	worktree_conf = got_worktree_get_gotconfig(worktree);
2749 	if (worktree_conf) {
2750 		got_gotconfig_get_remotes(&nremotes, &remotes,
2751 		    worktree_conf);
2752 		for (i = 0; i < nremotes; i++) {
2753 			if (strcmp(remotes[i].name, remote_name) == 0) {
2754 				remote = &remotes[i];
2755 				break;
2756 			}
2757 		}
2758 	}
2759 
2760 	if (remote == NULL) {
2761 		repo_conf = got_repo_get_gotconfig(repo);
2762 		if (repo_conf) {
2763 			got_gotconfig_get_remotes(&nremotes, &remotes,
2764 			    repo_conf);
2765 			for (i = 0; i < nremotes; i++) {
2766 				if (strcmp(remotes[i].name, remote_name) == 0) {
2767 					remote = &remotes[i];
2768 					break;
2769 				}
2770 			}
2771 		}
2772 	}
2773 	if (remote == NULL) {
2774 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2775 		for (i = 0; i < nremotes; i++) {
2776 			if (strcmp(remotes[i].name, remote_name) == 0) {
2777 				remote = &remotes[i];
2778 				break;
2779 			}
2780 		}
2781 	}
2782 	if (remote == NULL) {
2783 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2784 		goto done;
2785 	}
2786 
2787 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2788 	    &repo_name, remote->fetch_url);
2789 	if (error)
2790 		goto done;
2791 
2792 	if (strcmp(proto, "git") == 0) {
2793 #ifndef PROFILE
2794 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2795 		    "sendfd dns inet unveil", NULL) == -1)
2796 			err(1, "pledge");
2797 #endif
2798 	} else if (strcmp(proto, "git+ssh") == 0 ||
2799 	    strcmp(proto, "ssh") == 0) {
2800 #ifndef PROFILE
2801 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2802 		    "sendfd unveil", NULL) == -1)
2803 			err(1, "pledge");
2804 #endif
2805 	} else if (strcmp(proto, "http") == 0 ||
2806 	    strcmp(proto, "git+http") == 0) {
2807 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2808 		goto done;
2809 	} else {
2810 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2811 		goto done;
2812 	}
2813 
2814 	error = got_dial_apply_unveil(proto);
2815 	if (error)
2816 		goto done;
2817 
2818 	error = apply_unveil(got_repo_get_path(repo), 0,
2819 	    got_worktree_get_root_path(worktree));
2820 	if (error)
2821 		goto done;
2822 
2823 	if (verbosity >= 0) {
2824 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
2825 		    remote->name, proto, host,
2826 		    port ? ":" : "", port ? port : "",
2827 		    *server_path == '/' ? "" : "/", server_path);
2828 	}
2829 
2830 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2831 	    server_path, verbosity);
2832 	if (error)
2833 		goto done;
2834 
2835 	/*
2836 	 * If set, get this remote's HEAD ref target so
2837 	 * if it has changed on the server we can fetch it.
2838 	 */
2839 	error = got_ref_list(&remote_refs, repo, "refs/remotes",
2840 	    got_ref_cmp_by_name, repo);
2841 	if (error)
2842 		goto done;
2843 
2844 	TAILQ_FOREACH(re, &remote_refs, entry) {
2845 		const char	*remote_refname, *remote_target;
2846 		size_t		 remote_name_len;
2847 
2848 		if (!got_ref_is_symbolic(re->ref))
2849 			continue;
2850 
2851 		remote_name_len = strlen(remote->name);
2852 		remote_refname = got_ref_get_name(re->ref);
2853 
2854 		/* we only want refs/remotes/$remote->name/HEAD */
2855 		if (strncmp(remote_refname + 13, remote->name,
2856 		    remote_name_len) != 0)
2857 			continue;
2858 
2859 		if (strcmp(remote_refname + remote_name_len + 14,
2860 		    GOT_REF_HEAD) != 0)
2861 			continue;
2862 
2863 		/*
2864 		 * Take the name itself because we already
2865 		 * only match with refs/heads/ in fetch_pack().
2866 		 */
2867 		remote_target = got_ref_get_symref_target(re->ref);
2868 		remote_head = remote_target + remote_name_len + 14;
2869 		break;
2870 	}
2871 
2872 	refname = got_worktree_get_head_ref_name(worktree);
2873 	if (strncmp(refname, "refs/heads/", 11) == 0)
2874 		worktree_branch = refname;
2875 
2876 	fpa.last_scaled_size[0] = '\0';
2877 	fpa.last_p_indexed = -1;
2878 	fpa.last_p_resolved = -1;
2879 	fpa.verbosity = verbosity;
2880 	fpa.repo = repo;
2881 	fpa.create_configs = 0;
2882 	fpa.configs_created = 0;
2883 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2884 
2885 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2886 	    remote->mirror_references, 0, &wanted_branches, &wanted_refs,
2887 	    0, verbosity, fetchfd, repo, worktree_branch, remote_head,
2888 	    0, fetch_progress, &fpa);
2889 	if (error)
2890 		goto done;
2891 
2892 	if (pack_hash != NULL && verbosity >= 0) {
2893 		error = got_object_id_str(&id_str, pack_hash);
2894 		if (error)
2895 			goto done;
2896 		printf("\nFetched %s.pack\n", id_str);
2897 		free(id_str);
2898 		id_str = NULL;
2899 	}
2900 
2901 	/* Update references provided with the pack file. */
2902 	TAILQ_FOREACH(pe, &refs, entry) {
2903 		const char *refname = pe->path;
2904 		struct got_object_id *id = pe->data;
2905 		struct got_reference *ref;
2906 
2907 		if (is_wanted_ref(&wanted_refs, refname)) {
2908 			error = update_wanted_ref(refname, id,
2909 			    remote->name, verbosity, repo);
2910 			if (error)
2911 				goto done;
2912 			continue;
2913 		}
2914 
2915 		error = got_ref_open(&ref, repo, refname, 1);
2916 		if (error) {
2917 			if (error->code != GOT_ERR_NOT_REF)
2918 				goto done;
2919 			error = create_ref(refname, id, verbosity,
2920 			    repo);
2921 			if (error)
2922 				goto done;
2923 		} else {
2924 			error = update_ref(ref, id, replace_tags,
2925 			    verbosity-1, repo);
2926 			unlock_err = got_ref_unlock(ref);
2927 			if (unlock_err && error == NULL)
2928 				error = unlock_err;
2929 			got_ref_close(ref);
2930 			if (error)
2931 				goto done;
2932 		}
2933 	}
2934 
2935 	/* Update worktree */
2936 	error = got_ref_open(&head_ref, repo,
2937 	    got_worktree_get_head_ref_name(worktree), 0);
2938 	if (error != NULL)
2939 		goto done;
2940 	if (commit_id_str == NULL) {
2941 		error = got_ref_resolve(&commit_id, repo, head_ref);
2942 		if (error != NULL)
2943 			goto done;
2944 		error = got_object_id_str(&commit_id_str, commit_id);
2945 		if (error != NULL)
2946 			goto done;
2947 	} else {
2948 		struct got_reflist_head refs;
2949 		TAILQ_INIT(&refs);
2950 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
2951 		    NULL);
2952 		if (error)
2953 			goto done;
2954 		error = got_repo_match_object_id(&commit_id, NULL,
2955 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
2956 		got_ref_list_free(&refs);
2957 		free(commit_id_str);
2958 		commit_id_str = NULL;
2959 		if (error)
2960 			goto done;
2961 		error = got_object_id_str(&commit_id_str, commit_id);
2962 		if (error)
2963 			goto done;
2964 	}
2965 
2966 
2967 	error = check_linear_ancestry(commit_id,
2968 	    got_worktree_get_base_commit_id(worktree), 0, repo);
2969 	if (error != NULL) {
2970 		if (error->code == GOT_ERR_ANCESTRY)
2971 			error = got_error(GOT_ERR_BRANCH_MOVED);
2972 		goto done;
2973 	}
2974 	error = check_same_branch(commit_id, head_ref, repo);
2975 	if (error)
2976 		goto done;
2977 
2978 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
2979 	    commit_id) != 0) {
2980 		error = got_worktree_set_base_commit_id(worktree, repo,
2981 		    commit_id);
2982 		if (error)
2983 			goto done;
2984 	}
2985 
2986 	memset(&upa, 0, sizeof(upa));
2987 	upa.verbosity = verbosity;
2988 	error = got_worktree_checkout_files(worktree, &paths, repo,
2989 	    update_progress, &upa, check_cancelled, NULL);
2990 	if (error != NULL)
2991 		goto done;
2992 
2993 	if (upa.did_something) {
2994 		printf("Updated to %s: %s\n",
2995 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
2996 	} else
2997 		printf("Already up-to-date\n");
2998 
2999 	print_update_progress_stats(&upa);
3000 done:
3001 	if (fetchpid > 0) {
3002 		if (kill(fetchpid, SIGTERM) == -1)
3003 			error = got_error_from_errno("kill");
3004 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
3005 			error = got_error_from_errno("waitpid");
3006 	}
3007 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
3008 		error = got_error_from_errno("close");
3009 	if (repo) {
3010 		const struct got_error *close_err = got_repo_close(repo);
3011 		if (error == NULL)
3012 			error = close_err;
3013 	}
3014 	if (worktree)
3015 		got_worktree_close(worktree);
3016 	if (pack_fds) {
3017 		const struct got_error *pack_err =
3018 		    got_repo_pack_fds_close(pack_fds);
3019 		if (error == NULL)
3020 			error = pack_err;
3021 	}
3022 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
3023 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
3024 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
3025 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
3026 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
3027 	got_ref_list_free(&remote_refs);
3028 	free(id_str);
3029 	free(worktree_path);
3030 	free(pack_hash);
3031 	free(proto);
3032 	free(host);
3033 	free(port);
3034 	free(server_path);
3035 	free(repo_name);
3036 	free(commit_id);
3037 	free(commit_id_str);
3038 	return error;
3039 }
3040 
3041 static const struct got_error *
3042 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3043     const char *path, int diff_context, int ignore_whitespace,
3044     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3045     struct got_repository *repo, FILE *outfile)
3046 {
3047 	const struct got_error *err = NULL;
3048 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3049 	FILE *f1 = NULL, *f2 = NULL;
3050 	int fd1 = -1, fd2 = -1;
3051 
3052 	fd1 = got_opentempfd();
3053 	if (fd1 == -1)
3054 		return got_error_from_errno("got_opentempfd");
3055 	fd2 = got_opentempfd();
3056 	if (fd2 == -1) {
3057 		err = got_error_from_errno("got_opentempfd");
3058 		goto done;
3059 	}
3060 
3061 	if (blob_id1) {
3062 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3063 		    fd1);
3064 		if (err)
3065 			goto done;
3066 	}
3067 
3068 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3069 	if (err)
3070 		goto done;
3071 
3072 	f1 = got_opentemp();
3073 	if (f1 == NULL) {
3074 		err = got_error_from_errno("got_opentemp");
3075 		goto done;
3076 	}
3077 	f2 = got_opentemp();
3078 	if (f2 == NULL) {
3079 		err = got_error_from_errno("got_opentemp");
3080 		goto done;
3081 	}
3082 
3083 	while (path[0] == '/')
3084 		path++;
3085 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3086 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3087 	    force_text_diff, dsa, outfile);
3088 done:
3089 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3090 		err = got_error_from_errno("close");
3091 	if (blob1)
3092 		got_object_blob_close(blob1);
3093 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3094 		err = got_error_from_errno("close");
3095 	if (blob2)
3096 		got_object_blob_close(blob2);
3097 	if (f1 && fclose(f1) == EOF && err == NULL)
3098 		err = got_error_from_errno("fclose");
3099 	if (f2 && fclose(f2) == EOF && err == NULL)
3100 		err = got_error_from_errno("fclose");
3101 	return err;
3102 }
3103 
3104 static const struct got_error *
3105 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3106     const char *path, int diff_context, int ignore_whitespace,
3107     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3108     struct got_repository *repo, FILE *outfile)
3109 {
3110 	const struct got_error *err = NULL;
3111 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3112 	struct got_diff_blob_output_unidiff_arg arg;
3113 	FILE *f1 = NULL, *f2 = NULL;
3114 	int fd1 = -1, fd2 = -1;
3115 
3116 	if (tree_id1) {
3117 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3118 		if (err)
3119 			goto done;
3120 		fd1 = got_opentempfd();
3121 		if (fd1 == -1) {
3122 			err = got_error_from_errno("got_opentempfd");
3123 			goto done;
3124 		}
3125 	}
3126 
3127 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3128 	if (err)
3129 		goto done;
3130 
3131 	f1 = got_opentemp();
3132 	if (f1 == NULL) {
3133 		err = got_error_from_errno("got_opentemp");
3134 		goto done;
3135 	}
3136 
3137 	f2 = got_opentemp();
3138 	if (f2 == NULL) {
3139 		err = got_error_from_errno("got_opentemp");
3140 		goto done;
3141 	}
3142 	fd2 = got_opentempfd();
3143 	if (fd2 == -1) {
3144 		err = got_error_from_errno("got_opentempfd");
3145 		goto done;
3146 	}
3147 	arg.diff_context = diff_context;
3148 	arg.ignore_whitespace = ignore_whitespace;
3149 	arg.force_text_diff = force_text_diff;
3150 	arg.diffstat = dsa;
3151 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3152 	arg.outfile = outfile;
3153 	arg.lines = NULL;
3154 	arg.nlines = 0;
3155 	while (path[0] == '/')
3156 		path++;
3157 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3158 	    got_diff_blob_output_unidiff, &arg, 1);
3159 done:
3160 	if (tree1)
3161 		got_object_tree_close(tree1);
3162 	if (tree2)
3163 		got_object_tree_close(tree2);
3164 	if (f1 && fclose(f1) == EOF && err == NULL)
3165 		err = got_error_from_errno("fclose");
3166 	if (f2 && fclose(f2) == EOF && err == NULL)
3167 		err = got_error_from_errno("fclose");
3168 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3169 		err = got_error_from_errno("close");
3170 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3171 		err = got_error_from_errno("close");
3172 	return err;
3173 }
3174 
3175 static const struct got_error *
3176 get_changed_paths(struct got_pathlist_head *paths,
3177     struct got_commit_object *commit, struct got_repository *repo,
3178     struct got_diffstat_cb_arg *dsa)
3179 {
3180 	const struct got_error *err = NULL;
3181 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3182 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3183 	struct got_object_qid *qid;
3184 	got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
3185 	FILE *f1 = NULL, *f2 = NULL;
3186 	int fd1 = -1, fd2 = -1;
3187 
3188 	if (dsa) {
3189 		cb = got_diff_tree_compute_diffstat;
3190 
3191 		f1 = got_opentemp();
3192 		if (f1 == NULL) {
3193 			err = got_error_from_errno("got_opentemp");
3194 			goto done;
3195 		}
3196 		f2 = got_opentemp();
3197 		if (f2 == NULL) {
3198 			err = got_error_from_errno("got_opentemp");
3199 			goto done;
3200 		}
3201 		fd1 = got_opentempfd();
3202 		if (fd1 == -1) {
3203 			err = got_error_from_errno("got_opentempfd");
3204 			goto done;
3205 		}
3206 		fd2 = got_opentempfd();
3207 		if (fd2 == -1) {
3208 			err = got_error_from_errno("got_opentempfd");
3209 			goto done;
3210 		}
3211 	}
3212 
3213 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3214 	if (qid != NULL) {
3215 		struct got_commit_object *pcommit;
3216 		err = got_object_open_as_commit(&pcommit, repo,
3217 		    &qid->id);
3218 		if (err)
3219 			return err;
3220 
3221 		tree_id1 = got_object_id_dup(
3222 		    got_object_commit_get_tree_id(pcommit));
3223 		if (tree_id1 == NULL) {
3224 			got_object_commit_close(pcommit);
3225 			return got_error_from_errno("got_object_id_dup");
3226 		}
3227 		got_object_commit_close(pcommit);
3228 
3229 	}
3230 
3231 	if (tree_id1) {
3232 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3233 		if (err)
3234 			goto done;
3235 	}
3236 
3237 	tree_id2 = got_object_commit_get_tree_id(commit);
3238 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3239 	if (err)
3240 		goto done;
3241 
3242 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
3243 	    cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
3244 done:
3245 	if (tree1)
3246 		got_object_tree_close(tree1);
3247 	if (tree2)
3248 		got_object_tree_close(tree2);
3249 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3250 		err = got_error_from_errno("close");
3251 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3252 		err = got_error_from_errno("close");
3253 	if (f1 && fclose(f1) == EOF && err == NULL)
3254 		err = got_error_from_errno("fclose");
3255 	if (f2 && fclose(f2) == EOF && err == NULL)
3256 		err = got_error_from_errno("fclose");
3257 	free(tree_id1);
3258 	return err;
3259 }
3260 
3261 static const struct got_error *
3262 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3263     const char *path, int diff_context, struct got_diffstat_cb_arg *dsa,
3264     struct got_repository *repo, FILE *outfile)
3265 {
3266 	const struct got_error *err = NULL;
3267 	struct got_commit_object *pcommit = NULL;
3268 	char *id_str1 = NULL, *id_str2 = NULL;
3269 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3270 	struct got_object_qid *qid;
3271 
3272 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3273 	if (qid != NULL) {
3274 		err = got_object_open_as_commit(&pcommit, repo,
3275 		    &qid->id);
3276 		if (err)
3277 			return err;
3278 		err = got_object_id_str(&id_str1, &qid->id);
3279 		if (err)
3280 			goto done;
3281 	}
3282 
3283 	err = got_object_id_str(&id_str2, id);
3284 	if (err)
3285 		goto done;
3286 
3287 	if (path && path[0] != '\0') {
3288 		int obj_type;
3289 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3290 		if (err)
3291 			goto done;
3292 		if (pcommit) {
3293 			err = got_object_id_by_path(&obj_id1, repo,
3294 			    pcommit, path);
3295 			if (err) {
3296 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3297 					free(obj_id2);
3298 					goto done;
3299 				}
3300 			}
3301 		}
3302 		err = got_object_get_type(&obj_type, repo, obj_id2);
3303 		if (err) {
3304 			free(obj_id2);
3305 			goto done;
3306 		}
3307 		fprintf(outfile,
3308 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3309 		fprintf(outfile, "commit - %s\n",
3310 		    id_str1 ? id_str1 : "/dev/null");
3311 		fprintf(outfile, "commit + %s\n", id_str2);
3312 		switch (obj_type) {
3313 		case GOT_OBJ_TYPE_BLOB:
3314 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3315 			    0, 0, dsa, repo, outfile);
3316 			break;
3317 		case GOT_OBJ_TYPE_TREE:
3318 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3319 			    0, 0, dsa, repo, outfile);
3320 			break;
3321 		default:
3322 			err = got_error(GOT_ERR_OBJ_TYPE);
3323 			break;
3324 		}
3325 		free(obj_id1);
3326 		free(obj_id2);
3327 	} else {
3328 		obj_id2 = got_object_commit_get_tree_id(commit);
3329 		if (pcommit)
3330 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3331 		fprintf(outfile,
3332 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3333 		fprintf(outfile, "commit - %s\n",
3334 		    id_str1 ? id_str1 : "/dev/null");
3335 		fprintf(outfile, "commit + %s\n", id_str2);
3336 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3337 		    dsa, repo, outfile);
3338 	}
3339 done:
3340 	free(id_str1);
3341 	free(id_str2);
3342 	if (pcommit)
3343 		got_object_commit_close(pcommit);
3344 	return err;
3345 }
3346 
3347 static char *
3348 get_datestr(time_t *time, char *datebuf)
3349 {
3350 	struct tm mytm, *tm;
3351 	char *p, *s;
3352 
3353 	tm = gmtime_r(time, &mytm);
3354 	if (tm == NULL)
3355 		return NULL;
3356 	s = asctime_r(tm, datebuf);
3357 	if (s == NULL)
3358 		return NULL;
3359 	p = strchr(s, '\n');
3360 	if (p)
3361 		*p = '\0';
3362 	return s;
3363 }
3364 
3365 static const struct got_error *
3366 match_commit(int *have_match, struct got_object_id *id,
3367     struct got_commit_object *commit, regex_t *regex)
3368 {
3369 	const struct got_error *err = NULL;
3370 	regmatch_t regmatch;
3371 	char *id_str = NULL, *logmsg = NULL;
3372 
3373 	*have_match = 0;
3374 
3375 	err = got_object_id_str(&id_str, id);
3376 	if (err)
3377 		return err;
3378 
3379 	err = got_object_commit_get_logmsg(&logmsg, commit);
3380 	if (err)
3381 		goto done;
3382 
3383 	if (regexec(regex, got_object_commit_get_author(commit), 1,
3384 	    &regmatch, 0) == 0 ||
3385 	    regexec(regex, got_object_commit_get_committer(commit), 1,
3386 	    &regmatch, 0) == 0 ||
3387 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
3388 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3389 		*have_match = 1;
3390 done:
3391 	free(id_str);
3392 	free(logmsg);
3393 	return err;
3394 }
3395 
3396 static void
3397 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3398     regex_t *regex)
3399 {
3400 	regmatch_t regmatch;
3401 	struct got_pathlist_entry *pe;
3402 
3403 	*have_match = 0;
3404 
3405 	TAILQ_FOREACH(pe, changed_paths, entry) {
3406 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3407 			*have_match = 1;
3408 			break;
3409 		}
3410 	}
3411 }
3412 
3413 static const struct got_error *
3414 match_patch(int *have_match, struct got_commit_object *commit,
3415     struct got_object_id *id, const char *path, int diff_context,
3416     struct got_repository *repo, regex_t *regex, FILE *f)
3417 {
3418 	const struct got_error *err = NULL;
3419 	char *line = NULL;
3420 	size_t linesize = 0;
3421 	regmatch_t regmatch;
3422 
3423 	*have_match = 0;
3424 
3425 	err = got_opentemp_truncate(f);
3426 	if (err)
3427 		return err;
3428 
3429 	err = print_patch(commit, id, path, diff_context, NULL, repo, f);
3430 	if (err)
3431 		goto done;
3432 
3433 	if (fseeko(f, 0L, SEEK_SET) == -1) {
3434 		err = got_error_from_errno("fseeko");
3435 		goto done;
3436 	}
3437 
3438 	while (getline(&line, &linesize, f) != -1) {
3439 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
3440 			*have_match = 1;
3441 			break;
3442 		}
3443 	}
3444 done:
3445 	free(line);
3446 	return err;
3447 }
3448 
3449 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3450 
3451 static const struct got_error*
3452 build_refs_str(char **refs_str, struct got_reflist_head *refs,
3453     struct got_object_id *id, struct got_repository *repo,
3454     int local_only)
3455 {
3456 	static const struct got_error *err = NULL;
3457 	struct got_reflist_entry *re;
3458 	char *s;
3459 	const char *name;
3460 
3461 	*refs_str = NULL;
3462 
3463 	TAILQ_FOREACH(re, refs, entry) {
3464 		struct got_tag_object *tag = NULL;
3465 		struct got_object_id *ref_id;
3466 		int cmp;
3467 
3468 		name = got_ref_get_name(re->ref);
3469 		if (strcmp(name, GOT_REF_HEAD) == 0)
3470 			continue;
3471 		if (strncmp(name, "refs/", 5) == 0)
3472 			name += 5;
3473 		if (strncmp(name, "got/", 4) == 0)
3474 			continue;
3475 		if (strncmp(name, "heads/", 6) == 0)
3476 			name += 6;
3477 		if (strncmp(name, "remotes/", 8) == 0) {
3478 			if (local_only)
3479 				continue;
3480 			name += 8;
3481 			s = strstr(name, "/" GOT_REF_HEAD);
3482 			if (s != NULL && strcmp(s, "/" GOT_REF_HEAD) == 0)
3483 				continue;
3484 		}
3485 		err = got_ref_resolve(&ref_id, repo, re->ref);
3486 		if (err)
3487 			break;
3488 		if (strncmp(name, "tags/", 5) == 0) {
3489 			err = got_object_open_as_tag(&tag, repo, ref_id);
3490 			if (err) {
3491 				if (err->code != GOT_ERR_OBJ_TYPE) {
3492 					free(ref_id);
3493 					break;
3494 				}
3495 				/* Ref points at something other than a tag. */
3496 				err = NULL;
3497 				tag = NULL;
3498 			}
3499 		}
3500 		cmp = got_object_id_cmp(tag ?
3501 		    got_object_tag_get_object_id(tag) : ref_id, id);
3502 		free(ref_id);
3503 		if (tag)
3504 			got_object_tag_close(tag);
3505 		if (cmp != 0)
3506 			continue;
3507 		s = *refs_str;
3508 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
3509 		    s ? ", " : "", name) == -1) {
3510 			err = got_error_from_errno("asprintf");
3511 			free(s);
3512 			*refs_str = NULL;
3513 			break;
3514 		}
3515 		free(s);
3516 	}
3517 
3518 	return err;
3519 }
3520 
3521 static const struct got_error *
3522 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
3523     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
3524 {
3525 	const struct got_error *err = NULL;
3526 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
3527 	char *comma, *s, *nl;
3528 	struct got_reflist_head *refs;
3529 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
3530 	struct tm tm;
3531 	time_t committer_time;
3532 
3533 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
3534 	if (refs) {
3535 		err = build_refs_str(&ref_str, refs, id, repo, 1);
3536 		if (err)
3537 			return err;
3538 
3539 		/* Display the first matching ref only. */
3540 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
3541 			*comma = '\0';
3542 	}
3543 
3544 	if (ref_str == NULL) {
3545 		err = got_object_id_str(&id_str, id);
3546 		if (err)
3547 			return err;
3548 	}
3549 
3550 	committer_time = got_object_commit_get_committer_time(commit);
3551 	if (gmtime_r(&committer_time, &tm) == NULL) {
3552 		err = got_error_from_errno("gmtime_r");
3553 		goto done;
3554 	}
3555 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
3556 		err = got_error(GOT_ERR_NO_SPACE);
3557 		goto done;
3558 	}
3559 
3560 	err = got_object_commit_get_logmsg(&logmsg0, commit);
3561 	if (err)
3562 		goto done;
3563 
3564 	s = logmsg0;
3565 	while (isspace((unsigned char)s[0]))
3566 		s++;
3567 
3568 	nl = strchr(s, '\n');
3569 	if (nl) {
3570 		*nl = '\0';
3571 	}
3572 
3573 	if (ref_str)
3574 		printf("%s%-7s %s\n", datebuf, ref_str, s);
3575 	else
3576 		printf("%s%.7s %s\n", datebuf, id_str, s);
3577 
3578 	if (fflush(stdout) != 0 && err == NULL)
3579 		err = got_error_from_errno("fflush");
3580 done:
3581 	free(id_str);
3582 	free(ref_str);
3583 	free(logmsg0);
3584 	return err;
3585 }
3586 
3587 static const struct got_error *
3588 print_diffstat(struct got_diffstat_cb_arg *dsa, const char *header)
3589 {
3590 	struct got_pathlist_entry *pe;
3591 
3592 	if (header != NULL)
3593 		printf("%s\n", header);
3594 
3595 	TAILQ_FOREACH(pe, dsa->paths, entry) {
3596 		struct got_diff_changed_path *cp = pe->data;
3597 		int pad = dsa->max_path_len - pe->path_len + 1;
3598 
3599 		printf(" %c  %s%*c | %*d+ %*d-\n", cp->status, pe->path, pad,
3600 		    ' ', dsa->add_cols + 1, cp->add, dsa->rm_cols + 1, cp->rm);
3601 	}
3602 	printf("\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
3603 	    dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
3604 	    dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
3605 
3606 	if (fflush(stdout) != 0)
3607 		return got_error_from_errno("fflush");
3608 
3609 	return NULL;
3610 }
3611 
3612 static const struct got_error *
3613 printfile(FILE *f)
3614 {
3615 	char	buf[8192];
3616 	size_t	r;
3617 
3618 	if (fseeko(f, 0L, SEEK_SET) == -1)
3619 		return got_error_from_errno("fseek");
3620 
3621 	for (;;) {
3622 		r = fread(buf, 1, sizeof(buf), f);
3623 		if (r == 0) {
3624 			if (ferror(f))
3625 				return got_error_from_errno("fread");
3626 			if (feof(f))
3627 				break;
3628 		}
3629 		if (fwrite(buf, 1, r, stdout) != r)
3630 			return got_ferror(stdout, GOT_ERR_IO);
3631 	}
3632 
3633 	return NULL;
3634 }
3635 
3636 static const struct got_error *
3637 print_commit(struct got_commit_object *commit, struct got_object_id *id,
3638     struct got_repository *repo, const char *path,
3639     struct got_pathlist_head *changed_paths,
3640     struct got_diffstat_cb_arg *diffstat, int show_patch, int diff_context,
3641     struct got_reflist_object_id_map *refs_idmap, const char *custom_refs_str,
3642     const char *prefix)
3643 {
3644 	const struct got_error *err = NULL;
3645 	FILE *f = NULL;
3646 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
3647 	char datebuf[26];
3648 	time_t committer_time;
3649 	const char *author, *committer;
3650 	char *refs_str = NULL;
3651 
3652 	err = got_object_id_str(&id_str, id);
3653 	if (err)
3654 		return err;
3655 
3656 	if (custom_refs_str == NULL) {
3657 		struct got_reflist_head *refs;
3658 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
3659 		if (refs) {
3660 			err = build_refs_str(&refs_str, refs, id, repo, 0);
3661 			if (err)
3662 				goto done;
3663 		}
3664 	}
3665 
3666 	printf(GOT_COMMIT_SEP_STR);
3667 	if (custom_refs_str)
3668 		printf("%s %s (%s)\n", prefix ? prefix : "commit", id_str,
3669 		    custom_refs_str);
3670 	else
3671 		printf("%s %s%s%s%s\n", prefix ? prefix : "commit", id_str,
3672 		    refs_str ? " (" : "", refs_str ? refs_str : "",
3673 		    refs_str ? ")" : "");
3674 	free(id_str);
3675 	id_str = NULL;
3676 	free(refs_str);
3677 	refs_str = NULL;
3678 	printf("from: %s\n", got_object_commit_get_author(commit));
3679 	author = got_object_commit_get_author(commit);
3680 	committer = got_object_commit_get_committer(commit);
3681 	if (strcmp(author, committer) != 0)
3682 		printf("via: %s\n", committer);
3683 	committer_time = got_object_commit_get_committer_time(commit);
3684 	datestr = get_datestr(&committer_time, datebuf);
3685 	if (datestr)
3686 		printf("date: %s UTC\n", datestr);
3687 	if (got_object_commit_get_nparents(commit) > 1) {
3688 		const struct got_object_id_queue *parent_ids;
3689 		struct got_object_qid *qid;
3690 		int n = 1;
3691 		parent_ids = got_object_commit_get_parent_ids(commit);
3692 		STAILQ_FOREACH(qid, parent_ids, entry) {
3693 			err = got_object_id_str(&id_str, &qid->id);
3694 			if (err)
3695 				goto done;
3696 			printf("parent %d: %s\n", n++, id_str);
3697 			free(id_str);
3698 			id_str = NULL;
3699 		}
3700 	}
3701 
3702 	err = got_object_commit_get_logmsg(&logmsg0, commit);
3703 	if (err)
3704 		goto done;
3705 
3706 	logmsg = logmsg0;
3707 	do {
3708 		line = strsep(&logmsg, "\n");
3709 		if (line)
3710 			printf(" %s\n", line);
3711 	} while (line);
3712 	free(logmsg0);
3713 
3714 	if (changed_paths && diffstat == NULL) {
3715 		struct got_pathlist_entry *pe;
3716 
3717 		TAILQ_FOREACH(pe, changed_paths, entry) {
3718 			struct got_diff_changed_path *cp = pe->data;
3719 
3720 			printf(" %c  %s\n", cp->status, pe->path);
3721 		}
3722 		printf("\n");
3723 	}
3724 	if (show_patch) {
3725 		if (diffstat) {
3726 			f = got_opentemp();
3727 			if (f == NULL) {
3728 				err = got_error_from_errno("got_opentemp");
3729 				goto done;
3730 			}
3731 		}
3732 
3733 		err = print_patch(commit, id, path, diff_context, diffstat,
3734 		    repo, diffstat == NULL ? stdout : f);
3735 		if (err)
3736 			goto done;
3737 	}
3738 	if (diffstat) {
3739 		err = print_diffstat(diffstat, NULL);
3740 		if (err)
3741 			goto done;
3742 		if (show_patch) {
3743 			err = printfile(f);
3744 			if (err)
3745 				goto done;
3746 		}
3747 	}
3748 	if (show_patch)
3749 		printf("\n");
3750 
3751 	if (fflush(stdout) != 0 && err == NULL)
3752 		err = got_error_from_errno("fflush");
3753 done:
3754 	if (f && fclose(f) == EOF && err == NULL)
3755 		err = got_error_from_errno("fclose");
3756 	free(id_str);
3757 	free(refs_str);
3758 	return err;
3759 }
3760 
3761 static const struct got_error *
3762 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
3763     struct got_repository *repo, const char *path, int show_changed_paths,
3764     int show_diffstat, int show_patch, const char *search_pattern,
3765     int diff_context, int limit, int log_branches, int reverse_display_order,
3766     struct got_reflist_object_id_map *refs_idmap, int one_line,
3767     FILE *tmpfile)
3768 {
3769 	const struct got_error *err;
3770 	struct got_commit_graph *graph;
3771 	regex_t regex;
3772 	int have_match;
3773 	struct got_object_id_queue reversed_commits;
3774 	struct got_object_qid *qid;
3775 	struct got_commit_object *commit;
3776 	struct got_pathlist_head changed_paths;
3777 
3778 	STAILQ_INIT(&reversed_commits);
3779 	TAILQ_INIT(&changed_paths);
3780 
3781 	if (search_pattern && regcomp(&regex, search_pattern,
3782 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
3783 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
3784 
3785 	err = got_commit_graph_open(&graph, path, !log_branches);
3786 	if (err)
3787 		return err;
3788 	err = got_commit_graph_bfsort(graph, root_id, repo,
3789 	    check_cancelled, NULL);
3790 	if (err)
3791 		goto done;
3792 	for (;;) {
3793 		struct got_object_id id;
3794 		struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
3795 		    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
3796 
3797 		if (sigint_received || sigpipe_received)
3798 			break;
3799 
3800 		err = got_commit_graph_iter_next(&id, graph, repo,
3801 		    check_cancelled, NULL);
3802 		if (err) {
3803 			if (err->code == GOT_ERR_ITER_COMPLETED)
3804 				err = NULL;
3805 			break;
3806 		}
3807 
3808 		err = got_object_open_as_commit(&commit, repo, &id);
3809 		if (err)
3810 			break;
3811 
3812 		if ((show_changed_paths || (show_diffstat && !show_patch))
3813 		    && !reverse_display_order) {
3814 			err = get_changed_paths(&changed_paths, commit, repo,
3815 			    show_diffstat ? &dsa : NULL);
3816 			if (err)
3817 				break;
3818 		}
3819 
3820 		if (search_pattern) {
3821 			err = match_commit(&have_match, &id, commit, &regex);
3822 			if (err) {
3823 				got_object_commit_close(commit);
3824 				break;
3825 			}
3826 			if (have_match == 0 && show_changed_paths)
3827 				match_changed_paths(&have_match,
3828 				    &changed_paths, &regex);
3829 			if (have_match == 0 && show_patch) {
3830 				err = match_patch(&have_match, commit, &id,
3831 				    path, diff_context, repo, &regex, tmpfile);
3832 				if (err)
3833 					break;
3834 			}
3835 			if (have_match == 0) {
3836 				got_object_commit_close(commit);
3837 				got_pathlist_free(&changed_paths,
3838 				    GOT_PATHLIST_FREE_ALL);
3839 				continue;
3840 			}
3841 		}
3842 
3843 		if (reverse_display_order) {
3844 			err = got_object_qid_alloc(&qid, &id);
3845 			if (err)
3846 				break;
3847 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
3848 			got_object_commit_close(commit);
3849 		} else {
3850 			if (one_line)
3851 				err = print_commit_oneline(commit, &id,
3852 				    repo, refs_idmap);
3853 			else
3854 				err = print_commit(commit, &id, repo, path,
3855 				    (show_changed_paths || show_diffstat) ?
3856 				    &changed_paths : NULL,
3857 				    show_diffstat ? &dsa : NULL, show_patch,
3858 				    diff_context, refs_idmap, NULL, NULL);
3859 			got_object_commit_close(commit);
3860 			if (err)
3861 				break;
3862 		}
3863 		if ((limit && --limit == 0) ||
3864 		    (end_id && got_object_id_cmp(&id, end_id) == 0))
3865 			break;
3866 
3867 		got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
3868 	}
3869 	if (reverse_display_order) {
3870 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
3871 			struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
3872 			    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
3873 
3874 			err = got_object_open_as_commit(&commit, repo,
3875 			    &qid->id);
3876 			if (err)
3877 				break;
3878 			if (show_changed_paths ||
3879 			    (show_diffstat && !show_patch)) {
3880 				err = get_changed_paths(&changed_paths, commit,
3881 				    repo, show_diffstat ? &dsa : NULL);
3882 				if (err)
3883 					break;
3884 			}
3885 			if (one_line)
3886 				err = print_commit_oneline(commit, &qid->id,
3887 				    repo, refs_idmap);
3888 			else
3889 				err = print_commit(commit, &qid->id, repo, path,
3890 				    (show_changed_paths || show_diffstat) ?
3891 				    &changed_paths : NULL,
3892 				    show_diffstat ? &dsa : NULL, show_patch,
3893 				    diff_context, refs_idmap, NULL, NULL);
3894 			got_object_commit_close(commit);
3895 			if (err)
3896 				break;
3897 			got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
3898 		}
3899 	}
3900 done:
3901 	while (!STAILQ_EMPTY(&reversed_commits)) {
3902 		qid = STAILQ_FIRST(&reversed_commits);
3903 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
3904 		got_object_qid_free(qid);
3905 	}
3906 	got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
3907 	if (search_pattern)
3908 		regfree(&regex);
3909 	got_commit_graph_close(graph);
3910 	return err;
3911 }
3912 
3913 __dead static void
3914 usage_log(void)
3915 {
3916 	fprintf(stderr, "usage: %s log [-bdPpRs] [-C number] [-c commit] "
3917 	    "[-l N] [-r repository-path] [-S search-pattern] [-x commit] "
3918 	    "[path]\n", getprogname());
3919 	exit(1);
3920 }
3921 
3922 static int
3923 get_default_log_limit(void)
3924 {
3925 	const char *got_default_log_limit;
3926 	long long n;
3927 	const char *errstr;
3928 
3929 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
3930 	if (got_default_log_limit == NULL)
3931 		return 0;
3932 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
3933 	if (errstr != NULL)
3934 		return 0;
3935 	return n;
3936 }
3937 
3938 static const struct got_error *
3939 cmd_log(int argc, char *argv[])
3940 {
3941 	const struct got_error *error;
3942 	struct got_repository *repo = NULL;
3943 	struct got_worktree *worktree = NULL;
3944 	struct got_object_id *start_id = NULL, *end_id = NULL;
3945 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
3946 	const char *start_commit = NULL, *end_commit = NULL;
3947 	const char *search_pattern = NULL;
3948 	int diff_context = -1, ch;
3949 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
3950 	int show_diffstat = 0, reverse_display_order = 0, one_line = 0;
3951 	const char *errstr;
3952 	struct got_reflist_head refs;
3953 	struct got_reflist_object_id_map *refs_idmap = NULL;
3954 	FILE *tmpfile = NULL;
3955 	int *pack_fds = NULL;
3956 
3957 	TAILQ_INIT(&refs);
3958 
3959 #ifndef PROFILE
3960 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
3961 	    NULL)
3962 	    == -1)
3963 		err(1, "pledge");
3964 #endif
3965 
3966 	limit = get_default_log_limit();
3967 
3968 	while ((ch = getopt(argc, argv, "bC:c:dl:PpRr:S:sx:")) != -1) {
3969 		switch (ch) {
3970 		case 'b':
3971 			log_branches = 1;
3972 			break;
3973 		case 'C':
3974 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
3975 			    &errstr);
3976 			if (errstr != NULL)
3977 				errx(1, "number of context lines is %s: %s",
3978 				    errstr, optarg);
3979 			break;
3980 		case 'c':
3981 			start_commit = optarg;
3982 			break;
3983 		case 'd':
3984 			show_diffstat = 1;
3985 			break;
3986 		case 'l':
3987 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
3988 			if (errstr != NULL)
3989 				errx(1, "number of commits is %s: %s",
3990 				    errstr, optarg);
3991 			break;
3992 		case 'P':
3993 			show_changed_paths = 1;
3994 			break;
3995 		case 'p':
3996 			show_patch = 1;
3997 			break;
3998 		case 'R':
3999 			reverse_display_order = 1;
4000 			break;
4001 		case 'r':
4002 			repo_path = realpath(optarg, NULL);
4003 			if (repo_path == NULL)
4004 				return got_error_from_errno2("realpath",
4005 				    optarg);
4006 			got_path_strip_trailing_slashes(repo_path);
4007 			break;
4008 		case 'S':
4009 			search_pattern = optarg;
4010 			break;
4011 		case 's':
4012 			one_line = 1;
4013 			break;
4014 		case 'x':
4015 			end_commit = optarg;
4016 			break;
4017 		default:
4018 			usage_log();
4019 			/* NOTREACHED */
4020 		}
4021 	}
4022 
4023 	argc -= optind;
4024 	argv += optind;
4025 
4026 	if (diff_context == -1)
4027 		diff_context = 3;
4028 	else if (!show_patch)
4029 		errx(1, "-C requires -p");
4030 
4031 	if (one_line && (show_patch || show_changed_paths || show_diffstat))
4032 		errx(1, "cannot use -s with -d, -p or -P");
4033 
4034 	cwd = getcwd(NULL, 0);
4035 	if (cwd == NULL) {
4036 		error = got_error_from_errno("getcwd");
4037 		goto done;
4038 	}
4039 
4040 	error = got_repo_pack_fds_open(&pack_fds);
4041 	if (error != NULL)
4042 		goto done;
4043 
4044 	if (repo_path == NULL) {
4045 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
4046 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4047 			goto done;
4048 		error = NULL;
4049 	}
4050 
4051 	if (argc == 1) {
4052 		if (worktree) {
4053 			error = got_worktree_resolve_path(&path, worktree,
4054 			    argv[0]);
4055 			if (error)
4056 				goto done;
4057 		} else {
4058 			path = strdup(argv[0]);
4059 			if (path == NULL) {
4060 				error = got_error_from_errno("strdup");
4061 				goto done;
4062 			}
4063 		}
4064 	} else if (argc != 0)
4065 		usage_log();
4066 
4067 	if (repo_path == NULL) {
4068 		repo_path = worktree ?
4069 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4070 	}
4071 	if (repo_path == NULL) {
4072 		error = got_error_from_errno("strdup");
4073 		goto done;
4074 	}
4075 
4076 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4077 	if (error != NULL)
4078 		goto done;
4079 
4080 	error = apply_unveil(got_repo_get_path(repo), 1,
4081 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4082 	if (error)
4083 		goto done;
4084 
4085 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4086 	if (error)
4087 		goto done;
4088 
4089 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4090 	if (error)
4091 		goto done;
4092 
4093 	if (start_commit == NULL) {
4094 		struct got_reference *head_ref;
4095 		struct got_commit_object *commit = NULL;
4096 		error = got_ref_open(&head_ref, repo,
4097 		    worktree ? got_worktree_get_head_ref_name(worktree)
4098 		    : GOT_REF_HEAD, 0);
4099 		if (error != NULL)
4100 			goto done;
4101 		error = got_ref_resolve(&start_id, repo, head_ref);
4102 		got_ref_close(head_ref);
4103 		if (error != NULL)
4104 			goto done;
4105 		error = got_object_open_as_commit(&commit, repo,
4106 		    start_id);
4107 		if (error != NULL)
4108 			goto done;
4109 		got_object_commit_close(commit);
4110 	} else {
4111 		error = got_repo_match_object_id(&start_id, NULL,
4112 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4113 		if (error != NULL)
4114 			goto done;
4115 	}
4116 	if (end_commit != NULL) {
4117 		error = got_repo_match_object_id(&end_id, NULL,
4118 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4119 		if (error != NULL)
4120 			goto done;
4121 	}
4122 
4123 	if (worktree) {
4124 		/*
4125 		 * If a path was specified on the command line it was resolved
4126 		 * to a path in the work tree above. Prepend the work tree's
4127 		 * path prefix to obtain the corresponding in-repository path.
4128 		 */
4129 		if (path) {
4130 			const char *prefix;
4131 			prefix = got_worktree_get_path_prefix(worktree);
4132 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4133 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4134 				error = got_error_from_errno("asprintf");
4135 				goto done;
4136 			}
4137 		}
4138 	} else
4139 		error = got_repo_map_path(&in_repo_path, repo,
4140 		    path ? path : "");
4141 	if (error != NULL)
4142 		goto done;
4143 	if (in_repo_path) {
4144 		free(path);
4145 		path = in_repo_path;
4146 	}
4147 
4148 	if (worktree) {
4149 		/* Release work tree lock. */
4150 		got_worktree_close(worktree);
4151 		worktree = NULL;
4152 	}
4153 
4154 	if (search_pattern && show_patch) {
4155 		tmpfile = got_opentemp();
4156 		if (tmpfile == NULL) {
4157 			error = got_error_from_errno("got_opentemp");
4158 			goto done;
4159 		}
4160 	}
4161 
4162 	error = print_commits(start_id, end_id, repo, path ? path : "",
4163 	    show_changed_paths, show_diffstat, show_patch, search_pattern,
4164 	    diff_context, limit, log_branches, reverse_display_order,
4165 	    refs_idmap, one_line, tmpfile);
4166 done:
4167 	free(path);
4168 	free(repo_path);
4169 	free(cwd);
4170 	free(start_id);
4171 	free(end_id);
4172 	if (worktree)
4173 		got_worktree_close(worktree);
4174 	if (repo) {
4175 		const struct got_error *close_err = got_repo_close(repo);
4176 		if (error == NULL)
4177 			error = close_err;
4178 	}
4179 	if (pack_fds) {
4180 		const struct got_error *pack_err =
4181 		    got_repo_pack_fds_close(pack_fds);
4182 		if (error == NULL)
4183 			error = pack_err;
4184 	}
4185 	if (refs_idmap)
4186 		got_reflist_object_id_map_free(refs_idmap);
4187 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4188 		error = got_error_from_errno("fclose");
4189 	got_ref_list_free(&refs);
4190 	return error;
4191 }
4192 
4193 __dead static void
4194 usage_diff(void)
4195 {
4196 	fprintf(stderr, "usage: %s diff [-adPsw] [-C number] [-c commit] "
4197 	    "[-r repository-path] [object1 object2 | path ...]\n",
4198 	    getprogname());
4199 	exit(1);
4200 }
4201 
4202 struct print_diff_arg {
4203 	struct got_repository *repo;
4204 	struct got_worktree *worktree;
4205 	struct got_diffstat_cb_arg *diffstat;
4206 	int diff_context;
4207 	const char *id_str;
4208 	int header_shown;
4209 	int diff_staged;
4210 	enum got_diff_algorithm diff_algo;
4211 	int ignore_whitespace;
4212 	int force_text_diff;
4213 	FILE *f1;
4214 	FILE *f2;
4215 	FILE *outfile;
4216 };
4217 
4218 /*
4219  * Create a file which contains the target path of a symlink so we can feed
4220  * it as content to the diff engine.
4221  */
4222 static const struct got_error *
4223 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4224     const char *abspath)
4225 {
4226 	const struct got_error *err = NULL;
4227 	char target_path[PATH_MAX];
4228 	ssize_t target_len, outlen;
4229 
4230 	*fd = -1;
4231 
4232 	if (dirfd != -1) {
4233 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4234 		if (target_len == -1)
4235 			return got_error_from_errno2("readlinkat", abspath);
4236 	} else {
4237 		target_len = readlink(abspath, target_path, PATH_MAX);
4238 		if (target_len == -1)
4239 			return got_error_from_errno2("readlink", abspath);
4240 	}
4241 
4242 	*fd = got_opentempfd();
4243 	if (*fd == -1)
4244 		return got_error_from_errno("got_opentempfd");
4245 
4246 	outlen = write(*fd, target_path, target_len);
4247 	if (outlen == -1) {
4248 		err = got_error_from_errno("got_opentempfd");
4249 		goto done;
4250 	}
4251 
4252 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4253 		err = got_error_from_errno2("lseek", abspath);
4254 		goto done;
4255 	}
4256 done:
4257 	if (err) {
4258 		close(*fd);
4259 		*fd = -1;
4260 	}
4261 	return err;
4262 }
4263 
4264 static const struct got_error *
4265 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4266     const char *path, struct got_object_id *blob_id,
4267     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4268     int dirfd, const char *de_name)
4269 {
4270 	struct print_diff_arg *a = arg;
4271 	const struct got_error *err = NULL;
4272 	struct got_blob_object *blob1 = NULL;
4273 	int fd = -1, fd1 = -1, fd2 = -1;
4274 	FILE *f2 = NULL;
4275 	char *abspath = NULL, *label1 = NULL;
4276 	struct stat sb;
4277 	off_t size1 = 0;
4278 	int f2_exists = 0;
4279 
4280 	memset(&sb, 0, sizeof(sb));
4281 
4282 	if (a->diff_staged) {
4283 		if (staged_status != GOT_STATUS_MODIFY &&
4284 		    staged_status != GOT_STATUS_ADD &&
4285 		    staged_status != GOT_STATUS_DELETE)
4286 			return NULL;
4287 	} else {
4288 		if (staged_status == GOT_STATUS_DELETE)
4289 			return NULL;
4290 		if (status == GOT_STATUS_NONEXISTENT)
4291 			return got_error_set_errno(ENOENT, path);
4292 		if (status != GOT_STATUS_MODIFY &&
4293 		    status != GOT_STATUS_ADD &&
4294 		    status != GOT_STATUS_DELETE &&
4295 		    status != GOT_STATUS_CONFLICT)
4296 			return NULL;
4297 	}
4298 
4299 	err = got_opentemp_truncate(a->f1);
4300 	if (err)
4301 		return got_error_from_errno("got_opentemp_truncate");
4302 	err = got_opentemp_truncate(a->f2);
4303 	if (err)
4304 		return got_error_from_errno("got_opentemp_truncate");
4305 
4306 	if (!a->header_shown) {
4307 		if (fprintf(a->outfile, "diff %s%s\n",
4308 		    a->diff_staged ? "-s " : "",
4309 		    got_worktree_get_root_path(a->worktree)) < 0) {
4310 			err = got_error_from_errno("fprintf");
4311 			goto done;
4312 		}
4313 		if (fprintf(a->outfile, "commit - %s\n", a->id_str) < 0) {
4314 			err = got_error_from_errno("fprintf");
4315 			goto done;
4316 		}
4317 		if (fprintf(a->outfile, "path + %s%s\n",
4318 		    got_worktree_get_root_path(a->worktree),
4319 		    a->diff_staged ? " (staged changes)" : "") < 0) {
4320 			err = got_error_from_errno("fprintf");
4321 			goto done;
4322 		}
4323 		a->header_shown = 1;
4324 	}
4325 
4326 	if (a->diff_staged) {
4327 		const char *label1 = NULL, *label2 = NULL;
4328 		switch (staged_status) {
4329 		case GOT_STATUS_MODIFY:
4330 			label1 = path;
4331 			label2 = path;
4332 			break;
4333 		case GOT_STATUS_ADD:
4334 			label2 = path;
4335 			break;
4336 		case GOT_STATUS_DELETE:
4337 			label1 = path;
4338 			break;
4339 		default:
4340 			return got_error(GOT_ERR_FILE_STATUS);
4341 		}
4342 		fd1 = got_opentempfd();
4343 		if (fd1 == -1) {
4344 			err = got_error_from_errno("got_opentempfd");
4345 			goto done;
4346 		}
4347 		fd2 = got_opentempfd();
4348 		if (fd2 == -1) {
4349 			err = got_error_from_errno("got_opentempfd");
4350 			goto done;
4351 		}
4352 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
4353 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
4354 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
4355 		    a->force_text_diff, a->diffstat, a->repo, a->outfile);
4356 		goto done;
4357 	}
4358 
4359 	fd1 = got_opentempfd();
4360 	if (fd1 == -1) {
4361 		err = got_error_from_errno("got_opentempfd");
4362 		goto done;
4363 	}
4364 
4365 	if (staged_status == GOT_STATUS_ADD ||
4366 	    staged_status == GOT_STATUS_MODIFY) {
4367 		char *id_str;
4368 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4369 		    8192, fd1);
4370 		if (err)
4371 			goto done;
4372 		err = got_object_id_str(&id_str, staged_blob_id);
4373 		if (err)
4374 			goto done;
4375 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4376 			err = got_error_from_errno("asprintf");
4377 			free(id_str);
4378 			goto done;
4379 		}
4380 		free(id_str);
4381 	} else if (status != GOT_STATUS_ADD) {
4382 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
4383 		    fd1);
4384 		if (err)
4385 			goto done;
4386 	}
4387 
4388 	if (status != GOT_STATUS_DELETE) {
4389 		if (asprintf(&abspath, "%s/%s",
4390 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4391 			err = got_error_from_errno("asprintf");
4392 			goto done;
4393 		}
4394 
4395 		if (dirfd != -1) {
4396 			fd = openat(dirfd, de_name,
4397 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4398 			if (fd == -1) {
4399 				if (!got_err_open_nofollow_on_symlink()) {
4400 					err = got_error_from_errno2("openat",
4401 					    abspath);
4402 					goto done;
4403 				}
4404 				err = get_symlink_target_file(&fd, dirfd,
4405 				    de_name, abspath);
4406 				if (err)
4407 					goto done;
4408 			}
4409 		} else {
4410 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4411 			if (fd == -1) {
4412 				if (!got_err_open_nofollow_on_symlink()) {
4413 					err = got_error_from_errno2("open",
4414 					    abspath);
4415 					goto done;
4416 				}
4417 				err = get_symlink_target_file(&fd, dirfd,
4418 				    de_name, abspath);
4419 				if (err)
4420 					goto done;
4421 			}
4422 		}
4423 		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
4424 			err = got_error_from_errno2("fstatat", abspath);
4425 			goto done;
4426 		}
4427 		f2 = fdopen(fd, "r");
4428 		if (f2 == NULL) {
4429 			err = got_error_from_errno2("fdopen", abspath);
4430 			goto done;
4431 		}
4432 		fd = -1;
4433 		f2_exists = 1;
4434 	}
4435 
4436 	if (blob1) {
4437 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
4438 		    a->f1, blob1);
4439 		if (err)
4440 			goto done;
4441 	}
4442 
4443 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
4444 	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
4445 	    a->ignore_whitespace, a->force_text_diff, a->diffstat, a->outfile);
4446 done:
4447 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
4448 		err = got_error_from_errno("close");
4449 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
4450 		err = got_error_from_errno("close");
4451 	if (blob1)
4452 		got_object_blob_close(blob1);
4453 	if (fd != -1 && close(fd) == -1 && err == NULL)
4454 		err = got_error_from_errno("close");
4455 	if (f2 && fclose(f2) == EOF && err == NULL)
4456 		err = got_error_from_errno("fclose");
4457 	free(abspath);
4458 	return err;
4459 }
4460 
4461 static const struct got_error *
4462 cmd_diff(int argc, char *argv[])
4463 {
4464 	const struct got_error *error;
4465 	struct got_repository *repo = NULL;
4466 	struct got_worktree *worktree = NULL;
4467 	char *cwd = NULL, *repo_path = NULL;
4468 	const char *commit_args[2] = { NULL, NULL };
4469 	int ncommit_args = 0;
4470 	struct got_object_id *ids[2] = { NULL, NULL };
4471 	char *labels[2] = { NULL, NULL };
4472 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
4473 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
4474 	int force_text_diff = 0, force_path = 0, rflag = 0, show_diffstat = 0;
4475 	const char *errstr;
4476 	struct got_reflist_head refs;
4477 	struct got_pathlist_head diffstat_paths, paths;
4478 	FILE *f1 = NULL, *f2 = NULL, *outfile = NULL;
4479 	int fd1 = -1, fd2 = -1;
4480 	int *pack_fds = NULL;
4481 	struct got_diffstat_cb_arg dsa;
4482 
4483 	memset(&dsa, 0, sizeof(dsa));
4484 
4485 	TAILQ_INIT(&refs);
4486 	TAILQ_INIT(&paths);
4487 	TAILQ_INIT(&diffstat_paths);
4488 
4489 #ifndef PROFILE
4490 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4491 	    NULL) == -1)
4492 		err(1, "pledge");
4493 #endif
4494 
4495 	while ((ch = getopt(argc, argv, "aC:c:dPr:sw")) != -1) {
4496 		switch (ch) {
4497 		case 'a':
4498 			force_text_diff = 1;
4499 			break;
4500 		case 'C':
4501 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4502 			    &errstr);
4503 			if (errstr != NULL)
4504 				errx(1, "number of context lines is %s: %s",
4505 				    errstr, optarg);
4506 			break;
4507 		case 'c':
4508 			if (ncommit_args >= 2)
4509 				errx(1, "too many -c options used");
4510 			commit_args[ncommit_args++] = optarg;
4511 			break;
4512 		case 'd':
4513 			show_diffstat = 1;
4514 			break;
4515 		case 'P':
4516 			force_path = 1;
4517 			break;
4518 		case 'r':
4519 			repo_path = realpath(optarg, NULL);
4520 			if (repo_path == NULL)
4521 				return got_error_from_errno2("realpath",
4522 				    optarg);
4523 			got_path_strip_trailing_slashes(repo_path);
4524 			rflag = 1;
4525 			break;
4526 		case 's':
4527 			diff_staged = 1;
4528 			break;
4529 		case 'w':
4530 			ignore_whitespace = 1;
4531 			break;
4532 		default:
4533 			usage_diff();
4534 			/* NOTREACHED */
4535 		}
4536 	}
4537 
4538 	argc -= optind;
4539 	argv += optind;
4540 
4541 	cwd = getcwd(NULL, 0);
4542 	if (cwd == NULL) {
4543 		error = got_error_from_errno("getcwd");
4544 		goto done;
4545 	}
4546 
4547 	error = got_repo_pack_fds_open(&pack_fds);
4548 	if (error != NULL)
4549 		goto done;
4550 
4551 	if (repo_path == NULL) {
4552 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
4553 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4554 			goto done;
4555 		else
4556 			error = NULL;
4557 		if (worktree) {
4558 			repo_path =
4559 			    strdup(got_worktree_get_repo_path(worktree));
4560 			if (repo_path == NULL) {
4561 				error = got_error_from_errno("strdup");
4562 				goto done;
4563 			}
4564 		} else {
4565 			repo_path = strdup(cwd);
4566 			if (repo_path == NULL) {
4567 				error = got_error_from_errno("strdup");
4568 				goto done;
4569 			}
4570 		}
4571 	}
4572 
4573 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4574 	free(repo_path);
4575 	if (error != NULL)
4576 		goto done;
4577 
4578 	if (show_diffstat) {
4579 		dsa.paths = &diffstat_paths;
4580 		dsa.force_text = force_text_diff;
4581 		dsa.ignore_ws = ignore_whitespace;
4582 		dsa.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
4583 	}
4584 
4585 	if (rflag || worktree == NULL || ncommit_args > 0) {
4586 		if (force_path) {
4587 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4588 			    "-P option can only be used when diffing "
4589 			    "a work tree");
4590 			goto done;
4591 		}
4592 		if (diff_staged) {
4593 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4594 			    "-s option can only be used when diffing "
4595 			    "a work tree");
4596 			goto done;
4597 		}
4598 	}
4599 
4600 	error = apply_unveil(got_repo_get_path(repo), 1,
4601 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4602 	if (error)
4603 		goto done;
4604 
4605 	if ((!force_path && argc == 2) || ncommit_args > 0) {
4606 		int obj_type = (ncommit_args > 0 ?
4607 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
4608 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
4609 		    NULL);
4610 		if (error)
4611 			goto done;
4612 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
4613 			const char *arg;
4614 			if (ncommit_args > 0)
4615 				arg = commit_args[i];
4616 			else
4617 				arg = argv[i];
4618 			error = got_repo_match_object_id(&ids[i], &labels[i],
4619 			    arg, obj_type, &refs, repo);
4620 			if (error) {
4621 				if (error->code != GOT_ERR_NOT_REF &&
4622 				    error->code != GOT_ERR_NO_OBJ)
4623 					goto done;
4624 				if (ncommit_args > 0)
4625 					goto done;
4626 				error = NULL;
4627 				break;
4628 			}
4629 		}
4630 	}
4631 
4632 	f1 = got_opentemp();
4633 	if (f1 == NULL) {
4634 		error = got_error_from_errno("got_opentemp");
4635 		goto done;
4636 	}
4637 
4638 	f2 = got_opentemp();
4639 	if (f2 == NULL) {
4640 		error = got_error_from_errno("got_opentemp");
4641 		goto done;
4642 	}
4643 
4644 	outfile = got_opentemp();
4645 	if (outfile == NULL) {
4646 		error = got_error_from_errno("got_opentemp");
4647 		goto done;
4648 	}
4649 
4650 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
4651 		struct print_diff_arg arg;
4652 		char *id_str;
4653 
4654 		if (worktree == NULL) {
4655 			if (argc == 2 && ids[0] == NULL) {
4656 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
4657 				goto done;
4658 			} else if (argc == 2 && ids[1] == NULL) {
4659 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
4660 				goto done;
4661 			} else if (argc > 0) {
4662 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
4663 				    "%s", "specified paths cannot be resolved");
4664 				goto done;
4665 			} else {
4666 				error = got_error(GOT_ERR_NOT_WORKTREE);
4667 				goto done;
4668 			}
4669 		}
4670 
4671 		error = get_worktree_paths_from_argv(&paths, argc, argv,
4672 		    worktree);
4673 		if (error)
4674 			goto done;
4675 
4676 		error = got_object_id_str(&id_str,
4677 		    got_worktree_get_base_commit_id(worktree));
4678 		if (error)
4679 			goto done;
4680 		arg.repo = repo;
4681 		arg.worktree = worktree;
4682 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
4683 		arg.diff_context = diff_context;
4684 		arg.id_str = id_str;
4685 		arg.header_shown = 0;
4686 		arg.diff_staged = diff_staged;
4687 		arg.ignore_whitespace = ignore_whitespace;
4688 		arg.force_text_diff = force_text_diff;
4689 		arg.diffstat = show_diffstat ? &dsa : NULL;
4690 		arg.f1 = f1;
4691 		arg.f2 = f2;
4692 		arg.outfile = outfile;
4693 
4694 		error = got_worktree_status(worktree, &paths, repo, 0,
4695 		    print_diff, &arg, check_cancelled, NULL);
4696 		free(id_str);
4697 		if (error)
4698 			goto done;
4699 
4700 		if (show_diffstat && dsa.nfiles > 0) {
4701 			char *header;
4702 
4703 			if (asprintf(&header, "diffstat %s%s",
4704 			    diff_staged ? "-s " : "",
4705 			    got_worktree_get_root_path(worktree)) == -1) {
4706 				error = got_error_from_errno("asprintf");
4707 				goto done;
4708 			}
4709 
4710 			error = print_diffstat(&dsa, header);
4711 			free(header);
4712 			if (error)
4713 				goto done;
4714 		}
4715 
4716 		error = printfile(outfile);
4717 		goto done;
4718 	}
4719 
4720 	if (ncommit_args == 1) {
4721 		struct got_commit_object *commit;
4722 		error = got_object_open_as_commit(&commit, repo, ids[0]);
4723 		if (error)
4724 			goto done;
4725 
4726 		labels[1] = labels[0];
4727 		ids[1] = ids[0];
4728 		if (got_object_commit_get_nparents(commit) > 0) {
4729 			const struct got_object_id_queue *pids;
4730 			struct got_object_qid *pid;
4731 			pids = got_object_commit_get_parent_ids(commit);
4732 			pid = STAILQ_FIRST(pids);
4733 			ids[0] = got_object_id_dup(&pid->id);
4734 			if (ids[0] == NULL) {
4735 				error = got_error_from_errno(
4736 				    "got_object_id_dup");
4737 				got_object_commit_close(commit);
4738 				goto done;
4739 			}
4740 			error = got_object_id_str(&labels[0], ids[0]);
4741 			if (error) {
4742 				got_object_commit_close(commit);
4743 				goto done;
4744 			}
4745 		} else {
4746 			ids[0] = NULL;
4747 			labels[0] = strdup("/dev/null");
4748 			if (labels[0] == NULL) {
4749 				error = got_error_from_errno("strdup");
4750 				got_object_commit_close(commit);
4751 				goto done;
4752 			}
4753 		}
4754 
4755 		got_object_commit_close(commit);
4756 	}
4757 
4758 	if (ncommit_args == 0 && argc > 2) {
4759 		error = got_error_msg(GOT_ERR_BAD_PATH,
4760 		    "path arguments cannot be used when diffing two objects");
4761 		goto done;
4762 	}
4763 
4764 	if (ids[0]) {
4765 		error = got_object_get_type(&type1, repo, ids[0]);
4766 		if (error)
4767 			goto done;
4768 	}
4769 
4770 	error = got_object_get_type(&type2, repo, ids[1]);
4771 	if (error)
4772 		goto done;
4773 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
4774 		error = got_error(GOT_ERR_OBJ_TYPE);
4775 		goto done;
4776 	}
4777 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
4778 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
4779 		    "path arguments cannot be used when diffing blobs");
4780 		goto done;
4781 	}
4782 
4783 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
4784 		char *in_repo_path;
4785 		struct got_pathlist_entry *new;
4786 		if (worktree) {
4787 			const char *prefix;
4788 			char *p;
4789 			error = got_worktree_resolve_path(&p, worktree,
4790 			    argv[i]);
4791 			if (error)
4792 				goto done;
4793 			prefix = got_worktree_get_path_prefix(worktree);
4794 			while (prefix[0] == '/')
4795 				prefix++;
4796 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4797 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
4798 			    p) == -1) {
4799 				error = got_error_from_errno("asprintf");
4800 				free(p);
4801 				goto done;
4802 			}
4803 			free(p);
4804 		} else {
4805 			char *mapped_path, *s;
4806 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
4807 			if (error)
4808 				goto done;
4809 			s = mapped_path;
4810 			while (s[0] == '/')
4811 				s++;
4812 			in_repo_path = strdup(s);
4813 			if (in_repo_path == NULL) {
4814 				error = got_error_from_errno("asprintf");
4815 				free(mapped_path);
4816 				goto done;
4817 			}
4818 			free(mapped_path);
4819 
4820 		}
4821 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
4822 		if (error || new == NULL /* duplicate */)
4823 			free(in_repo_path);
4824 		if (error)
4825 			goto done;
4826 	}
4827 
4828 	if (worktree) {
4829 		/* Release work tree lock. */
4830 		got_worktree_close(worktree);
4831 		worktree = NULL;
4832 	}
4833 
4834 	fd1 = got_opentempfd();
4835 	if (fd1 == -1) {
4836 		error = got_error_from_errno("got_opentempfd");
4837 		goto done;
4838 	}
4839 
4840 	fd2 = got_opentempfd();
4841 	if (fd2 == -1) {
4842 		error = got_error_from_errno("got_opentempfd");
4843 		goto done;
4844 	}
4845 
4846 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
4847 	case GOT_OBJ_TYPE_BLOB:
4848 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
4849 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
4850 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
4851 		    ignore_whitespace, force_text_diff,
4852 		    show_diffstat ? &dsa : NULL, repo, outfile);
4853 		break;
4854 	case GOT_OBJ_TYPE_TREE:
4855 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
4856 		    ids[0], ids[1], &paths, "", "",
4857 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
4858 		    ignore_whitespace, force_text_diff,
4859 		    show_diffstat ? &dsa : NULL, repo, outfile);
4860 		break;
4861 	case GOT_OBJ_TYPE_COMMIT:
4862 		fprintf(outfile, "diff %s %s\n", labels[0], labels[1]);
4863 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
4864 		    fd1, fd2, ids[0], ids[1], &paths,
4865 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
4866 		    ignore_whitespace, force_text_diff,
4867 		    show_diffstat ? &dsa : NULL, repo, outfile);
4868 		break;
4869 	default:
4870 		error = got_error(GOT_ERR_OBJ_TYPE);
4871 	}
4872 	if (error)
4873 		goto done;
4874 
4875 	if (show_diffstat && dsa.nfiles > 0) {
4876 		char *header = NULL;
4877 
4878 		if (asprintf(&header, "diffstat %s %s",
4879 		    labels[0], labels[1]) == -1) {
4880 			error = got_error_from_errno("asprintf");
4881 			goto done;
4882 		}
4883 
4884 		error = print_diffstat(&dsa, header);
4885 		free(header);
4886 		if (error)
4887 			goto done;
4888 	}
4889 
4890 	error = printfile(outfile);
4891 
4892 done:
4893 	free(labels[0]);
4894 	free(labels[1]);
4895 	free(ids[0]);
4896 	free(ids[1]);
4897 	if (worktree)
4898 		got_worktree_close(worktree);
4899 	if (repo) {
4900 		const struct got_error *close_err = got_repo_close(repo);
4901 		if (error == NULL)
4902 			error = close_err;
4903 	}
4904 	if (pack_fds) {
4905 		const struct got_error *pack_err =
4906 		    got_repo_pack_fds_close(pack_fds);
4907 		if (error == NULL)
4908 			error = pack_err;
4909 	}
4910 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
4911 	got_pathlist_free(&diffstat_paths, GOT_PATHLIST_FREE_ALL);
4912 	got_ref_list_free(&refs);
4913 	if (outfile && fclose(outfile) == EOF && error == NULL)
4914 		error = got_error_from_errno("fclose");
4915 	if (f1 && fclose(f1) == EOF && error == NULL)
4916 		error = got_error_from_errno("fclose");
4917 	if (f2 && fclose(f2) == EOF && error == NULL)
4918 		error = got_error_from_errno("fclose");
4919 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
4920 		error = got_error_from_errno("close");
4921 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
4922 		error = got_error_from_errno("close");
4923 	return error;
4924 }
4925 
4926 __dead static void
4927 usage_blame(void)
4928 {
4929 	fprintf(stderr,
4930 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
4931 	    getprogname());
4932 	exit(1);
4933 }
4934 
4935 struct blame_line {
4936 	int annotated;
4937 	char *id_str;
4938 	char *committer;
4939 	char datebuf[11]; /* YYYY-MM-DD + NUL */
4940 };
4941 
4942 struct blame_cb_args {
4943 	struct blame_line *lines;
4944 	int nlines;
4945 	int nlines_prec;
4946 	int lineno_cur;
4947 	off_t *line_offsets;
4948 	FILE *f;
4949 	struct got_repository *repo;
4950 };
4951 
4952 static const struct got_error *
4953 blame_cb(void *arg, int nlines, int lineno,
4954     struct got_commit_object *commit, struct got_object_id *id)
4955 {
4956 	const struct got_error *err = NULL;
4957 	struct blame_cb_args *a = arg;
4958 	struct blame_line *bline;
4959 	char *line = NULL;
4960 	size_t linesize = 0;
4961 	off_t offset;
4962 	struct tm tm;
4963 	time_t committer_time;
4964 
4965 	if (nlines != a->nlines ||
4966 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
4967 		return got_error(GOT_ERR_RANGE);
4968 
4969 	if (sigint_received)
4970 		return got_error(GOT_ERR_ITER_COMPLETED);
4971 
4972 	if (lineno == -1)
4973 		return NULL; /* no change in this commit */
4974 
4975 	/* Annotate this line. */
4976 	bline = &a->lines[lineno - 1];
4977 	if (bline->annotated)
4978 		return NULL;
4979 	err = got_object_id_str(&bline->id_str, id);
4980 	if (err)
4981 		return err;
4982 
4983 	bline->committer = strdup(got_object_commit_get_committer(commit));
4984 	if (bline->committer == NULL) {
4985 		err = got_error_from_errno("strdup");
4986 		goto done;
4987 	}
4988 
4989 	committer_time = got_object_commit_get_committer_time(commit);
4990 	if (gmtime_r(&committer_time, &tm) == NULL)
4991 		return got_error_from_errno("gmtime_r");
4992 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
4993 	    &tm) == 0) {
4994 		err = got_error(GOT_ERR_NO_SPACE);
4995 		goto done;
4996 	}
4997 	bline->annotated = 1;
4998 
4999 	/* Print lines annotated so far. */
5000 	bline = &a->lines[a->lineno_cur - 1];
5001 	if (!bline->annotated)
5002 		goto done;
5003 
5004 	offset = a->line_offsets[a->lineno_cur - 1];
5005 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5006 		err = got_error_from_errno("fseeko");
5007 		goto done;
5008 	}
5009 
5010 	while (a->lineno_cur <= a->nlines && bline->annotated) {
5011 		char *smallerthan, *at, *nl, *committer;
5012 		size_t len;
5013 
5014 		if (getline(&line, &linesize, a->f) == -1) {
5015 			if (ferror(a->f))
5016 				err = got_error_from_errno("getline");
5017 			break;
5018 		}
5019 
5020 		committer = bline->committer;
5021 		smallerthan = strchr(committer, '<');
5022 		if (smallerthan && smallerthan[1] != '\0')
5023 			committer = smallerthan + 1;
5024 		at = strchr(committer, '@');
5025 		if (at)
5026 			*at = '\0';
5027 		len = strlen(committer);
5028 		if (len >= 9)
5029 			committer[8] = '\0';
5030 
5031 		nl = strchr(line, '\n');
5032 		if (nl)
5033 			*nl = '\0';
5034 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5035 		    bline->id_str, bline->datebuf, committer, line);
5036 
5037 		a->lineno_cur++;
5038 		bline = &a->lines[a->lineno_cur - 1];
5039 	}
5040 done:
5041 	free(line);
5042 	return err;
5043 }
5044 
5045 static const struct got_error *
5046 cmd_blame(int argc, char *argv[])
5047 {
5048 	const struct got_error *error;
5049 	struct got_repository *repo = NULL;
5050 	struct got_worktree *worktree = NULL;
5051 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5052 	char *link_target = NULL;
5053 	struct got_object_id *obj_id = NULL;
5054 	struct got_object_id *commit_id = NULL;
5055 	struct got_commit_object *commit = NULL;
5056 	struct got_blob_object *blob = NULL;
5057 	char *commit_id_str = NULL;
5058 	struct blame_cb_args bca;
5059 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5060 	off_t filesize;
5061 	int *pack_fds = NULL;
5062 	FILE *f1 = NULL, *f2 = NULL;
5063 
5064 	fd1 = got_opentempfd();
5065 	if (fd1 == -1)
5066 		return got_error_from_errno("got_opentempfd");
5067 
5068 	memset(&bca, 0, sizeof(bca));
5069 
5070 #ifndef PROFILE
5071 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5072 	    NULL) == -1)
5073 		err(1, "pledge");
5074 #endif
5075 
5076 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5077 		switch (ch) {
5078 		case 'c':
5079 			commit_id_str = optarg;
5080 			break;
5081 		case 'r':
5082 			repo_path = realpath(optarg, NULL);
5083 			if (repo_path == NULL)
5084 				return got_error_from_errno2("realpath",
5085 				    optarg);
5086 			got_path_strip_trailing_slashes(repo_path);
5087 			break;
5088 		default:
5089 			usage_blame();
5090 			/* NOTREACHED */
5091 		}
5092 	}
5093 
5094 	argc -= optind;
5095 	argv += optind;
5096 
5097 	if (argc == 1)
5098 		path = argv[0];
5099 	else
5100 		usage_blame();
5101 
5102 	cwd = getcwd(NULL, 0);
5103 	if (cwd == NULL) {
5104 		error = got_error_from_errno("getcwd");
5105 		goto done;
5106 	}
5107 
5108 	error = got_repo_pack_fds_open(&pack_fds);
5109 	if (error != NULL)
5110 		goto done;
5111 
5112 	if (repo_path == NULL) {
5113 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
5114 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5115 			goto done;
5116 		else
5117 			error = NULL;
5118 		if (worktree) {
5119 			repo_path =
5120 			    strdup(got_worktree_get_repo_path(worktree));
5121 			if (repo_path == NULL) {
5122 				error = got_error_from_errno("strdup");
5123 				if (error)
5124 					goto done;
5125 			}
5126 		} else {
5127 			repo_path = strdup(cwd);
5128 			if (repo_path == NULL) {
5129 				error = got_error_from_errno("strdup");
5130 				goto done;
5131 			}
5132 		}
5133 	}
5134 
5135 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5136 	if (error != NULL)
5137 		goto done;
5138 
5139 	if (worktree) {
5140 		const char *prefix = got_worktree_get_path_prefix(worktree);
5141 		char *p;
5142 
5143 		error = got_worktree_resolve_path(&p, worktree, path);
5144 		if (error)
5145 			goto done;
5146 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5147 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5148 		    p) == -1) {
5149 			error = got_error_from_errno("asprintf");
5150 			free(p);
5151 			goto done;
5152 		}
5153 		free(p);
5154 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5155 	} else {
5156 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5157 		if (error)
5158 			goto done;
5159 		error = got_repo_map_path(&in_repo_path, repo, path);
5160 	}
5161 	if (error)
5162 		goto done;
5163 
5164 	if (commit_id_str == NULL) {
5165 		struct got_reference *head_ref;
5166 		error = got_ref_open(&head_ref, repo, worktree ?
5167 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5168 		if (error != NULL)
5169 			goto done;
5170 		error = got_ref_resolve(&commit_id, repo, head_ref);
5171 		got_ref_close(head_ref);
5172 		if (error != NULL)
5173 			goto done;
5174 	} else {
5175 		struct got_reflist_head refs;
5176 		TAILQ_INIT(&refs);
5177 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5178 		    NULL);
5179 		if (error)
5180 			goto done;
5181 		error = got_repo_match_object_id(&commit_id, NULL,
5182 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5183 		got_ref_list_free(&refs);
5184 		if (error)
5185 			goto done;
5186 	}
5187 
5188 	if (worktree) {
5189 		/* Release work tree lock. */
5190 		got_worktree_close(worktree);
5191 		worktree = NULL;
5192 	}
5193 
5194 	error = got_object_open_as_commit(&commit, repo, commit_id);
5195 	if (error)
5196 		goto done;
5197 
5198 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5199 	    commit, repo);
5200 	if (error)
5201 		goto done;
5202 
5203 	error = got_object_id_by_path(&obj_id, repo, commit,
5204 	    link_target ? link_target : in_repo_path);
5205 	if (error)
5206 		goto done;
5207 
5208 	error = got_object_get_type(&obj_type, repo, obj_id);
5209 	if (error)
5210 		goto done;
5211 
5212 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5213 		error = got_error_path(link_target ? link_target : in_repo_path,
5214 		    GOT_ERR_OBJ_TYPE);
5215 		goto done;
5216 	}
5217 
5218 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5219 	if (error)
5220 		goto done;
5221 	bca.f = got_opentemp();
5222 	if (bca.f == NULL) {
5223 		error = got_error_from_errno("got_opentemp");
5224 		goto done;
5225 	}
5226 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5227 	    &bca.line_offsets, bca.f, blob);
5228 	if (error || bca.nlines == 0)
5229 		goto done;
5230 
5231 	/* Don't include \n at EOF in the blame line count. */
5232 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5233 		bca.nlines--;
5234 
5235 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5236 	if (bca.lines == NULL) {
5237 		error = got_error_from_errno("calloc");
5238 		goto done;
5239 	}
5240 	bca.lineno_cur = 1;
5241 	bca.nlines_prec = 0;
5242 	i = bca.nlines;
5243 	while (i > 0) {
5244 		i /= 10;
5245 		bca.nlines_prec++;
5246 	}
5247 	bca.repo = repo;
5248 
5249 	fd2 = got_opentempfd();
5250 	if (fd2 == -1) {
5251 		error = got_error_from_errno("got_opentempfd");
5252 		goto done;
5253 	}
5254 	fd3 = got_opentempfd();
5255 	if (fd3 == -1) {
5256 		error = got_error_from_errno("got_opentempfd");
5257 		goto done;
5258 	}
5259 	f1 = got_opentemp();
5260 	if (f1 == NULL) {
5261 		error = got_error_from_errno("got_opentemp");
5262 		goto done;
5263 	}
5264 	f2 = got_opentemp();
5265 	if (f2 == NULL) {
5266 		error = got_error_from_errno("got_opentemp");
5267 		goto done;
5268 	}
5269 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5270 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5271 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5272 done:
5273 	free(in_repo_path);
5274 	free(link_target);
5275 	free(repo_path);
5276 	free(cwd);
5277 	free(commit_id);
5278 	free(obj_id);
5279 	if (commit)
5280 		got_object_commit_close(commit);
5281 
5282 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5283 		error = got_error_from_errno("close");
5284 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5285 		error = got_error_from_errno("close");
5286 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5287 		error = got_error_from_errno("close");
5288 	if (f1 && fclose(f1) == EOF && error == NULL)
5289 		error = got_error_from_errno("fclose");
5290 	if (f2 && fclose(f2) == EOF && error == NULL)
5291 		error = got_error_from_errno("fclose");
5292 
5293 	if (blob)
5294 		got_object_blob_close(blob);
5295 	if (worktree)
5296 		got_worktree_close(worktree);
5297 	if (repo) {
5298 		const struct got_error *close_err = got_repo_close(repo);
5299 		if (error == NULL)
5300 			error = close_err;
5301 	}
5302 	if (pack_fds) {
5303 		const struct got_error *pack_err =
5304 		    got_repo_pack_fds_close(pack_fds);
5305 		if (error == NULL)
5306 			error = pack_err;
5307 	}
5308 	if (bca.lines) {
5309 		for (i = 0; i < bca.nlines; i++) {
5310 			struct blame_line *bline = &bca.lines[i];
5311 			free(bline->id_str);
5312 			free(bline->committer);
5313 		}
5314 		free(bca.lines);
5315 	}
5316 	free(bca.line_offsets);
5317 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5318 		error = got_error_from_errno("fclose");
5319 	return error;
5320 }
5321 
5322 __dead static void
5323 usage_tree(void)
5324 {
5325 	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
5326 	    "[path]\n", getprogname());
5327 	exit(1);
5328 }
5329 
5330 static const struct got_error *
5331 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5332     const char *root_path, struct got_repository *repo)
5333 {
5334 	const struct got_error *err = NULL;
5335 	int is_root_path = (strcmp(path, root_path) == 0);
5336 	const char *modestr = "";
5337 	mode_t mode = got_tree_entry_get_mode(te);
5338 	char *link_target = NULL;
5339 
5340 	path += strlen(root_path);
5341 	while (path[0] == '/')
5342 		path++;
5343 
5344 	if (got_object_tree_entry_is_submodule(te))
5345 		modestr = "$";
5346 	else if (S_ISLNK(mode)) {
5347 		int i;
5348 
5349 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5350 		if (err)
5351 			return err;
5352 		for (i = 0; link_target[i] != '\0'; i++) {
5353 			if (!isprint((unsigned char)link_target[i]))
5354 				link_target[i] = '?';
5355 		}
5356 
5357 		modestr = "@";
5358 	}
5359 	else if (S_ISDIR(mode))
5360 		modestr = "/";
5361 	else if (mode & S_IXUSR)
5362 		modestr = "*";
5363 
5364 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5365 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5366 	    link_target ? " -> ": "", link_target ? link_target : "");
5367 
5368 	free(link_target);
5369 	return NULL;
5370 }
5371 
5372 static const struct got_error *
5373 print_tree(const char *path, struct got_commit_object *commit,
5374     int show_ids, int recurse, const char *root_path,
5375     struct got_repository *repo)
5376 {
5377 	const struct got_error *err = NULL;
5378 	struct got_object_id *tree_id = NULL;
5379 	struct got_tree_object *tree = NULL;
5380 	int nentries, i;
5381 
5382 	err = got_object_id_by_path(&tree_id, repo, commit, path);
5383 	if (err)
5384 		goto done;
5385 
5386 	err = got_object_open_as_tree(&tree, repo, tree_id);
5387 	if (err)
5388 		goto done;
5389 	nentries = got_object_tree_get_nentries(tree);
5390 	for (i = 0; i < nentries; i++) {
5391 		struct got_tree_entry *te;
5392 		char *id = NULL;
5393 
5394 		if (sigint_received || sigpipe_received)
5395 			break;
5396 
5397 		te = got_object_tree_get_entry(tree, i);
5398 		if (show_ids) {
5399 			char *id_str;
5400 			err = got_object_id_str(&id_str,
5401 			    got_tree_entry_get_id(te));
5402 			if (err)
5403 				goto done;
5404 			if (asprintf(&id, "%s ", id_str) == -1) {
5405 				err = got_error_from_errno("asprintf");
5406 				free(id_str);
5407 				goto done;
5408 			}
5409 			free(id_str);
5410 		}
5411 		err = print_entry(te, id, path, root_path, repo);
5412 		free(id);
5413 		if (err)
5414 			goto done;
5415 
5416 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
5417 			char *child_path;
5418 			if (asprintf(&child_path, "%s%s%s", path,
5419 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
5420 			    got_tree_entry_get_name(te)) == -1) {
5421 				err = got_error_from_errno("asprintf");
5422 				goto done;
5423 			}
5424 			err = print_tree(child_path, commit, show_ids, 1,
5425 			    root_path, repo);
5426 			free(child_path);
5427 			if (err)
5428 				goto done;
5429 		}
5430 	}
5431 done:
5432 	if (tree)
5433 		got_object_tree_close(tree);
5434 	free(tree_id);
5435 	return err;
5436 }
5437 
5438 static const struct got_error *
5439 cmd_tree(int argc, char *argv[])
5440 {
5441 	const struct got_error *error;
5442 	struct got_repository *repo = NULL;
5443 	struct got_worktree *worktree = NULL;
5444 	const char *path, *refname = NULL;
5445 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5446 	struct got_object_id *commit_id = NULL;
5447 	struct got_commit_object *commit = NULL;
5448 	char *commit_id_str = NULL;
5449 	int show_ids = 0, recurse = 0;
5450 	int ch;
5451 	int *pack_fds = NULL;
5452 
5453 #ifndef PROFILE
5454 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5455 	    NULL) == -1)
5456 		err(1, "pledge");
5457 #endif
5458 
5459 	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
5460 		switch (ch) {
5461 		case 'c':
5462 			commit_id_str = optarg;
5463 			break;
5464 		case 'i':
5465 			show_ids = 1;
5466 			break;
5467 		case 'R':
5468 			recurse = 1;
5469 			break;
5470 		case 'r':
5471 			repo_path = realpath(optarg, NULL);
5472 			if (repo_path == NULL)
5473 				return got_error_from_errno2("realpath",
5474 				    optarg);
5475 			got_path_strip_trailing_slashes(repo_path);
5476 			break;
5477 		default:
5478 			usage_tree();
5479 			/* NOTREACHED */
5480 		}
5481 	}
5482 
5483 	argc -= optind;
5484 	argv += optind;
5485 
5486 	if (argc == 1)
5487 		path = argv[0];
5488 	else if (argc > 1)
5489 		usage_tree();
5490 	else
5491 		path = NULL;
5492 
5493 	cwd = getcwd(NULL, 0);
5494 	if (cwd == NULL) {
5495 		error = got_error_from_errno("getcwd");
5496 		goto done;
5497 	}
5498 
5499 	error = got_repo_pack_fds_open(&pack_fds);
5500 	if (error != NULL)
5501 		goto done;
5502 
5503 	if (repo_path == NULL) {
5504 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
5505 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5506 			goto done;
5507 		else
5508 			error = NULL;
5509 		if (worktree) {
5510 			repo_path =
5511 			    strdup(got_worktree_get_repo_path(worktree));
5512 			if (repo_path == NULL)
5513 				error = got_error_from_errno("strdup");
5514 			if (error)
5515 				goto done;
5516 		} else {
5517 			repo_path = strdup(cwd);
5518 			if (repo_path == NULL) {
5519 				error = got_error_from_errno("strdup");
5520 				goto done;
5521 			}
5522 		}
5523 	}
5524 
5525 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5526 	if (error != NULL)
5527 		goto done;
5528 
5529 	if (worktree) {
5530 		const char *prefix = got_worktree_get_path_prefix(worktree);
5531 		char *p;
5532 
5533 		if (path == NULL || got_path_is_root_dir(path))
5534 			path = "";
5535 		error = got_worktree_resolve_path(&p, worktree, path);
5536 		if (error)
5537 			goto done;
5538 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5539 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
5540 		    p) == -1) {
5541 			error = got_error_from_errno("asprintf");
5542 			free(p);
5543 			goto done;
5544 		}
5545 		free(p);
5546 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5547 		if (error)
5548 			goto done;
5549 	} else {
5550 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5551 		if (error)
5552 			goto done;
5553 		if (path == NULL)
5554 			path = "/";
5555 		error = got_repo_map_path(&in_repo_path, repo, path);
5556 		if (error != NULL)
5557 			goto done;
5558 	}
5559 
5560 	if (commit_id_str == NULL) {
5561 		struct got_reference *head_ref;
5562 		if (worktree)
5563 			refname = got_worktree_get_head_ref_name(worktree);
5564 		else
5565 			refname = GOT_REF_HEAD;
5566 		error = got_ref_open(&head_ref, repo, refname, 0);
5567 		if (error != NULL)
5568 			goto done;
5569 		error = got_ref_resolve(&commit_id, repo, head_ref);
5570 		got_ref_close(head_ref);
5571 		if (error != NULL)
5572 			goto done;
5573 	} else {
5574 		struct got_reflist_head refs;
5575 		TAILQ_INIT(&refs);
5576 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5577 		    NULL);
5578 		if (error)
5579 			goto done;
5580 		error = got_repo_match_object_id(&commit_id, NULL,
5581 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5582 		got_ref_list_free(&refs);
5583 		if (error)
5584 			goto done;
5585 	}
5586 
5587 	if (worktree) {
5588 		/* Release work tree lock. */
5589 		got_worktree_close(worktree);
5590 		worktree = NULL;
5591 	}
5592 
5593 	error = got_object_open_as_commit(&commit, repo, commit_id);
5594 	if (error)
5595 		goto done;
5596 
5597 	error = print_tree(in_repo_path, commit, show_ids, recurse,
5598 	    in_repo_path, repo);
5599 done:
5600 	free(in_repo_path);
5601 	free(repo_path);
5602 	free(cwd);
5603 	free(commit_id);
5604 	if (commit)
5605 		got_object_commit_close(commit);
5606 	if (worktree)
5607 		got_worktree_close(worktree);
5608 	if (repo) {
5609 		const struct got_error *close_err = got_repo_close(repo);
5610 		if (error == NULL)
5611 			error = close_err;
5612 	}
5613 	if (pack_fds) {
5614 		const struct got_error *pack_err =
5615 		    got_repo_pack_fds_close(pack_fds);
5616 		if (error == NULL)
5617 			error = pack_err;
5618 	}
5619 	return error;
5620 }
5621 
5622 __dead static void
5623 usage_status(void)
5624 {
5625 	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
5626 	    "[-s status-codes] [path ...]\n", getprogname());
5627 	exit(1);
5628 }
5629 
5630 struct got_status_arg {
5631 	char *status_codes;
5632 	int suppress;
5633 };
5634 
5635 static const struct got_error *
5636 print_status(void *arg, unsigned char status, unsigned char staged_status,
5637     const char *path, struct got_object_id *blob_id,
5638     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
5639     int dirfd, const char *de_name)
5640 {
5641 	struct got_status_arg *st = arg;
5642 
5643 	if (status == staged_status && (status == GOT_STATUS_DELETE))
5644 		status = GOT_STATUS_NO_CHANGE;
5645 	if (st != NULL && st->status_codes) {
5646 		size_t ncodes = strlen(st->status_codes);
5647 		int i, j = 0;
5648 
5649 		for (i = 0; i < ncodes ; i++) {
5650 			if (st->suppress) {
5651 				if (status == st->status_codes[i] ||
5652 				    staged_status == st->status_codes[i]) {
5653 					j++;
5654 					continue;
5655 				}
5656 			} else {
5657 				if (status == st->status_codes[i] ||
5658 				    staged_status == st->status_codes[i])
5659 					break;
5660 			}
5661 		}
5662 
5663 		if (st->suppress && j == 0)
5664 			goto print;
5665 
5666 		if (i == ncodes)
5667 			return NULL;
5668 	}
5669 print:
5670 	printf("%c%c %s\n", status, staged_status, path);
5671 	return NULL;
5672 }
5673 
5674 static const struct got_error *
5675 cmd_status(int argc, char *argv[])
5676 {
5677 	const struct got_error *error = NULL;
5678 	struct got_repository *repo = NULL;
5679 	struct got_worktree *worktree = NULL;
5680 	struct got_status_arg st;
5681 	char *cwd = NULL;
5682 	struct got_pathlist_head paths;
5683 	int ch, i, no_ignores = 0;
5684 	int *pack_fds = NULL;
5685 
5686 	TAILQ_INIT(&paths);
5687 
5688 	memset(&st, 0, sizeof(st));
5689 	st.status_codes = NULL;
5690 	st.suppress = 0;
5691 
5692 #ifndef PROFILE
5693 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5694 	    NULL) == -1)
5695 		err(1, "pledge");
5696 #endif
5697 
5698 	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
5699 		switch (ch) {
5700 		case 'I':
5701 			no_ignores = 1;
5702 			break;
5703 		case 'S':
5704 			if (st.status_codes != NULL && st.suppress == 0)
5705 				option_conflict('S', 's');
5706 			st.suppress = 1;
5707 			/* fallthrough */
5708 		case 's':
5709 			for (i = 0; optarg[i] != '\0'; i++) {
5710 				switch (optarg[i]) {
5711 				case GOT_STATUS_MODIFY:
5712 				case GOT_STATUS_ADD:
5713 				case GOT_STATUS_DELETE:
5714 				case GOT_STATUS_CONFLICT:
5715 				case GOT_STATUS_MISSING:
5716 				case GOT_STATUS_OBSTRUCTED:
5717 				case GOT_STATUS_UNVERSIONED:
5718 				case GOT_STATUS_MODE_CHANGE:
5719 				case GOT_STATUS_NONEXISTENT:
5720 					break;
5721 				default:
5722 					errx(1, "invalid status code '%c'",
5723 					    optarg[i]);
5724 				}
5725 			}
5726 			if (ch == 's' && st.suppress)
5727 				option_conflict('s', 'S');
5728 			st.status_codes = optarg;
5729 			break;
5730 		default:
5731 			usage_status();
5732 			/* NOTREACHED */
5733 		}
5734 	}
5735 
5736 	argc -= optind;
5737 	argv += optind;
5738 
5739 	cwd = getcwd(NULL, 0);
5740 	if (cwd == NULL) {
5741 		error = got_error_from_errno("getcwd");
5742 		goto done;
5743 	}
5744 
5745 	error = got_repo_pack_fds_open(&pack_fds);
5746 	if (error != NULL)
5747 		goto done;
5748 
5749 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
5750 	if (error) {
5751 		if (error->code == GOT_ERR_NOT_WORKTREE)
5752 			error = wrap_not_worktree_error(error, "status", cwd);
5753 		goto done;
5754 	}
5755 
5756 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
5757 	    NULL, pack_fds);
5758 	if (error != NULL)
5759 		goto done;
5760 
5761 	error = apply_unveil(got_repo_get_path(repo), 1,
5762 	    got_worktree_get_root_path(worktree));
5763 	if (error)
5764 		goto done;
5765 
5766 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
5767 	if (error)
5768 		goto done;
5769 
5770 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
5771 	    print_status, &st, check_cancelled, NULL);
5772 done:
5773 	if (pack_fds) {
5774 		const struct got_error *pack_err =
5775 		    got_repo_pack_fds_close(pack_fds);
5776 		if (error == NULL)
5777 			error = pack_err;
5778 	}
5779 	if (repo) {
5780 		const struct got_error *close_err = got_repo_close(repo);
5781 		if (error == NULL)
5782 			error = close_err;
5783 	}
5784 
5785 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
5786 	free(cwd);
5787 	return error;
5788 }
5789 
5790 __dead static void
5791 usage_tag(void)
5792 {
5793 	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
5794 	    "[-r repository-path] [-s signer-id] name\n", getprogname());
5795 	exit(1);
5796 }
5797 
5798 #if 0
5799 static const struct got_error *
5800 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
5801 {
5802 	const struct got_error *err = NULL;
5803 	struct got_reflist_entry *re, *se, *new;
5804 	struct got_object_id *re_id, *se_id;
5805 	struct got_tag_object *re_tag, *se_tag;
5806 	time_t re_time, se_time;
5807 
5808 	STAILQ_FOREACH(re, tags, entry) {
5809 		se = STAILQ_FIRST(sorted);
5810 		if (se == NULL) {
5811 			err = got_reflist_entry_dup(&new, re);
5812 			if (err)
5813 				return err;
5814 			STAILQ_INSERT_HEAD(sorted, new, entry);
5815 			continue;
5816 		} else {
5817 			err = got_ref_resolve(&re_id, repo, re->ref);
5818 			if (err)
5819 				break;
5820 			err = got_object_open_as_tag(&re_tag, repo, re_id);
5821 			free(re_id);
5822 			if (err)
5823 				break;
5824 			re_time = got_object_tag_get_tagger_time(re_tag);
5825 			got_object_tag_close(re_tag);
5826 		}
5827 
5828 		while (se) {
5829 			err = got_ref_resolve(&se_id, repo, re->ref);
5830 			if (err)
5831 				break;
5832 			err = got_object_open_as_tag(&se_tag, repo, se_id);
5833 			free(se_id);
5834 			if (err)
5835 				break;
5836 			se_time = got_object_tag_get_tagger_time(se_tag);
5837 			got_object_tag_close(se_tag);
5838 
5839 			if (se_time > re_time) {
5840 				err = got_reflist_entry_dup(&new, re);
5841 				if (err)
5842 					return err;
5843 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
5844 				break;
5845 			}
5846 			se = STAILQ_NEXT(se, entry);
5847 			continue;
5848 		}
5849 	}
5850 done:
5851 	return err;
5852 }
5853 #endif
5854 
5855 static const struct got_error *
5856 get_tag_refname(char **refname, const char *tag_name)
5857 {
5858 	const struct got_error *err;
5859 
5860 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
5861 		*refname = strdup(tag_name);
5862 		if (*refname == NULL)
5863 			return got_error_from_errno("strdup");
5864 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
5865 		err = got_error_from_errno("asprintf");
5866 		*refname = NULL;
5867 		return err;
5868 	}
5869 
5870 	return NULL;
5871 }
5872 
5873 static const struct got_error *
5874 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
5875     const char *allowed_signers, const char *revoked_signers, int verbosity)
5876 {
5877 	static const struct got_error *err = NULL;
5878 	struct got_reflist_head refs;
5879 	struct got_reflist_entry *re;
5880 	char *wanted_refname = NULL;
5881 	int bad_sigs = 0;
5882 
5883 	TAILQ_INIT(&refs);
5884 
5885 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
5886 	if (err)
5887 		return err;
5888 
5889 	if (tag_name) {
5890 		struct got_reference *ref;
5891 		err = get_tag_refname(&wanted_refname, tag_name);
5892 		if (err)
5893 			goto done;
5894 		/* Wanted tag reference should exist. */
5895 		err = got_ref_open(&ref, repo, wanted_refname, 0);
5896 		if (err)
5897 			goto done;
5898 		got_ref_close(ref);
5899 	}
5900 
5901 	TAILQ_FOREACH(re, &refs, entry) {
5902 		const char *refname;
5903 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
5904 		char datebuf[26];
5905 		const char *tagger, *ssh_sig = NULL;
5906 		char *sig_msg = NULL;
5907 		time_t tagger_time;
5908 		struct got_object_id *id;
5909 		struct got_tag_object *tag;
5910 		struct got_commit_object *commit = NULL;
5911 
5912 		refname = got_ref_get_name(re->ref);
5913 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
5914 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
5915 			continue;
5916 		refname += 10;
5917 		refstr = got_ref_to_str(re->ref);
5918 		if (refstr == NULL) {
5919 			err = got_error_from_errno("got_ref_to_str");
5920 			break;
5921 		}
5922 
5923 		err = got_ref_resolve(&id, repo, re->ref);
5924 		if (err)
5925 			break;
5926 		err = got_object_open_as_tag(&tag, repo, id);
5927 		if (err) {
5928 			if (err->code != GOT_ERR_OBJ_TYPE) {
5929 				free(id);
5930 				break;
5931 			}
5932 			/* "lightweight" tag */
5933 			err = got_object_open_as_commit(&commit, repo, id);
5934 			if (err) {
5935 				free(id);
5936 				break;
5937 			}
5938 			tagger = got_object_commit_get_committer(commit);
5939 			tagger_time =
5940 			    got_object_commit_get_committer_time(commit);
5941 			err = got_object_id_str(&id_str, id);
5942 			free(id);
5943 			if (err)
5944 				break;
5945 		} else {
5946 			free(id);
5947 			tagger = got_object_tag_get_tagger(tag);
5948 			tagger_time = got_object_tag_get_tagger_time(tag);
5949 			err = got_object_id_str(&id_str,
5950 			    got_object_tag_get_object_id(tag));
5951 			if (err)
5952 				break;
5953 		}
5954 
5955 		if (tag && verify_tags) {
5956 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
5957 			    got_object_tag_get_message(tag));
5958 			if (ssh_sig && allowed_signers == NULL) {
5959 				err = got_error_msg(
5960 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
5961 				    "SSH signature verification requires "
5962 				        "setting allowed_signers in "
5963 				        "got.conf(5)");
5964 				break;
5965 			}
5966 		}
5967 
5968 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
5969 		free(refstr);
5970 		printf("from: %s\n", tagger);
5971 		datestr = get_datestr(&tagger_time, datebuf);
5972 		if (datestr)
5973 			printf("date: %s UTC\n", datestr);
5974 		if (commit)
5975 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
5976 		else {
5977 			switch (got_object_tag_get_object_type(tag)) {
5978 			case GOT_OBJ_TYPE_BLOB:
5979 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
5980 				    id_str);
5981 				break;
5982 			case GOT_OBJ_TYPE_TREE:
5983 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
5984 				    id_str);
5985 				break;
5986 			case GOT_OBJ_TYPE_COMMIT:
5987 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
5988 				    id_str);
5989 				break;
5990 			case GOT_OBJ_TYPE_TAG:
5991 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
5992 				    id_str);
5993 				break;
5994 			default:
5995 				break;
5996 			}
5997 		}
5998 		free(id_str);
5999 
6000 		if (ssh_sig) {
6001 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
6002 				allowed_signers, revoked_signers, verbosity);
6003 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
6004 				bad_sigs = 1;
6005 			else if (err)
6006 				break;
6007 			printf("signature: %s", sig_msg);
6008 			free(sig_msg);
6009 			sig_msg = NULL;
6010 		}
6011 
6012 		if (commit) {
6013 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
6014 			if (err)
6015 				break;
6016 			got_object_commit_close(commit);
6017 		} else {
6018 			tagmsg0 = strdup(got_object_tag_get_message(tag));
6019 			got_object_tag_close(tag);
6020 			if (tagmsg0 == NULL) {
6021 				err = got_error_from_errno("strdup");
6022 				break;
6023 			}
6024 		}
6025 
6026 		tagmsg = tagmsg0;
6027 		do {
6028 			line = strsep(&tagmsg, "\n");
6029 			if (line)
6030 				printf(" %s\n", line);
6031 		} while (line);
6032 		free(tagmsg0);
6033 	}
6034 done:
6035 	got_ref_list_free(&refs);
6036 	free(wanted_refname);
6037 
6038 	if (err == NULL && bad_sigs)
6039 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
6040 	return err;
6041 }
6042 
6043 static const struct got_error *
6044 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
6045     const char *tag_name, const char *repo_path)
6046 {
6047 	const struct got_error *err = NULL;
6048 	char *template = NULL, *initial_content = NULL;
6049 	char *editor = NULL;
6050 	int initial_content_len;
6051 	int fd = -1;
6052 
6053 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
6054 		err = got_error_from_errno("asprintf");
6055 		goto done;
6056 	}
6057 
6058 	initial_content_len = asprintf(&initial_content,
6059 	    "\n# tagging commit %s as %s\n",
6060 	    commit_id_str, tag_name);
6061 	if (initial_content_len == -1) {
6062 		err = got_error_from_errno("asprintf");
6063 		goto done;
6064 	}
6065 
6066 	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
6067 	if (err)
6068 		goto done;
6069 
6070 	if (write(fd, initial_content, initial_content_len) == -1) {
6071 		err = got_error_from_errno2("write", *tagmsg_path);
6072 		goto done;
6073 	}
6074 	if (close(fd) == -1) {
6075 		err = got_error_from_errno2("close", *tagmsg_path);
6076 		goto done;
6077 	}
6078 	fd = -1;
6079 
6080 	err = get_editor(&editor);
6081 	if (err)
6082 		goto done;
6083 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
6084 	    initial_content_len, 1);
6085 done:
6086 	free(initial_content);
6087 	free(template);
6088 	free(editor);
6089 
6090 	if (fd != -1 && close(fd) == -1 && err == NULL)
6091 		err = got_error_from_errno2("close", *tagmsg_path);
6092 
6093 	if (err) {
6094 		free(*tagmsg);
6095 		*tagmsg = NULL;
6096 	}
6097 	return err;
6098 }
6099 
6100 static const struct got_error *
6101 add_tag(struct got_repository *repo, const char *tagger,
6102     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
6103     const char *signer_id, int verbosity)
6104 {
6105 	const struct got_error *err = NULL;
6106 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
6107 	char *label = NULL, *commit_id_str = NULL;
6108 	struct got_reference *ref = NULL;
6109 	char *refname = NULL, *tagmsg = NULL;
6110 	char *tagmsg_path = NULL, *tag_id_str = NULL;
6111 	int preserve_tagmsg = 0;
6112 	struct got_reflist_head refs;
6113 
6114 	TAILQ_INIT(&refs);
6115 
6116 	/*
6117 	 * Don't let the user create a tag name with a leading '-'.
6118 	 * While technically a valid reference name, this case is usually
6119 	 * an unintended typo.
6120 	 */
6121 	if (tag_name[0] == '-')
6122 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
6123 
6124 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6125 	if (err)
6126 		goto done;
6127 
6128 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
6129 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
6130 	if (err)
6131 		goto done;
6132 
6133 	err = got_object_id_str(&commit_id_str, commit_id);
6134 	if (err)
6135 		goto done;
6136 
6137 	err = get_tag_refname(&refname, tag_name);
6138 	if (err)
6139 		goto done;
6140 	if (strncmp("refs/tags/", tag_name, 10) == 0)
6141 		tag_name += 10;
6142 
6143 	err = got_ref_open(&ref, repo, refname, 0);
6144 	if (err == NULL) {
6145 		err = got_error(GOT_ERR_TAG_EXISTS);
6146 		goto done;
6147 	} else if (err->code != GOT_ERR_NOT_REF)
6148 		goto done;
6149 
6150 	if (tagmsg_arg == NULL) {
6151 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
6152 		    tag_name, got_repo_get_path(repo));
6153 		if (err) {
6154 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
6155 			    tagmsg_path != NULL)
6156 				preserve_tagmsg = 1;
6157 			goto done;
6158 		}
6159 		/* Editor is done; we can now apply unveil(2) */
6160 		err = got_sigs_apply_unveil();
6161 		if (err)
6162 			goto done;
6163 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
6164 		if (err)
6165 			goto done;
6166 	}
6167 
6168 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
6169 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
6170 	    verbosity);
6171 	if (err) {
6172 		if (tagmsg_path)
6173 			preserve_tagmsg = 1;
6174 		goto done;
6175 	}
6176 
6177 	err = got_ref_alloc(&ref, refname, tag_id);
6178 	if (err) {
6179 		if (tagmsg_path)
6180 			preserve_tagmsg = 1;
6181 		goto done;
6182 	}
6183 
6184 	err = got_ref_write(ref, repo);
6185 	if (err) {
6186 		if (tagmsg_path)
6187 			preserve_tagmsg = 1;
6188 		goto done;
6189 	}
6190 
6191 	err = got_object_id_str(&tag_id_str, tag_id);
6192 	if (err) {
6193 		if (tagmsg_path)
6194 			preserve_tagmsg = 1;
6195 		goto done;
6196 	}
6197 	printf("Created tag %s\n", tag_id_str);
6198 done:
6199 	if (preserve_tagmsg) {
6200 		fprintf(stderr, "%s: tag message preserved in %s\n",
6201 		    getprogname(), tagmsg_path);
6202 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
6203 		err = got_error_from_errno2("unlink", tagmsg_path);
6204 	free(tag_id_str);
6205 	if (ref)
6206 		got_ref_close(ref);
6207 	free(commit_id);
6208 	free(commit_id_str);
6209 	free(refname);
6210 	free(tagmsg);
6211 	free(tagmsg_path);
6212 	got_ref_list_free(&refs);
6213 	return err;
6214 }
6215 
6216 static const struct got_error *
6217 cmd_tag(int argc, char *argv[])
6218 {
6219 	const struct got_error *error = NULL;
6220 	struct got_repository *repo = NULL;
6221 	struct got_worktree *worktree = NULL;
6222 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
6223 	char *gitconfig_path = NULL, *tagger = NULL;
6224 	char *allowed_signers = NULL, *revoked_signers = NULL;
6225 	const char *signer_id = NULL;
6226 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
6227 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
6228 	int *pack_fds = NULL;
6229 
6230 #ifndef PROFILE
6231 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6232 	    "sendfd unveil", NULL) == -1)
6233 		err(1, "pledge");
6234 #endif
6235 
6236 	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
6237 		switch (ch) {
6238 		case 'c':
6239 			commit_id_arg = optarg;
6240 			break;
6241 		case 'l':
6242 			do_list = 1;
6243 			break;
6244 		case 'm':
6245 			tagmsg = optarg;
6246 			break;
6247 		case 'r':
6248 			repo_path = realpath(optarg, NULL);
6249 			if (repo_path == NULL) {
6250 				error = got_error_from_errno2("realpath",
6251 				    optarg);
6252 				goto done;
6253 			}
6254 			got_path_strip_trailing_slashes(repo_path);
6255 			break;
6256 		case 's':
6257 			signer_id = optarg;
6258 			break;
6259 		case 'V':
6260 			verify_tags = 1;
6261 			break;
6262 		case 'v':
6263 			if (verbosity < 0)
6264 				verbosity = 0;
6265 			else if (verbosity < 3)
6266 				verbosity++;
6267 			break;
6268 		default:
6269 			usage_tag();
6270 			/* NOTREACHED */
6271 		}
6272 	}
6273 
6274 	argc -= optind;
6275 	argv += optind;
6276 
6277 	if (do_list || verify_tags) {
6278 		if (commit_id_arg != NULL)
6279 			errx(1,
6280 			    "-c option can only be used when creating a tag");
6281 		if (tagmsg) {
6282 			if (do_list)
6283 				option_conflict('l', 'm');
6284 			else
6285 				option_conflict('V', 'm');
6286 		}
6287 		if (signer_id) {
6288 			if (do_list)
6289 				option_conflict('l', 's');
6290 			else
6291 				option_conflict('V', 's');
6292 		}
6293 		if (argc > 1)
6294 			usage_tag();
6295 	} else if (argc != 1)
6296 		usage_tag();
6297 
6298 	if (argc == 1)
6299 		tag_name = argv[0];
6300 
6301 	cwd = getcwd(NULL, 0);
6302 	if (cwd == NULL) {
6303 		error = got_error_from_errno("getcwd");
6304 		goto done;
6305 	}
6306 
6307 	error = got_repo_pack_fds_open(&pack_fds);
6308 	if (error != NULL)
6309 		goto done;
6310 
6311 	if (repo_path == NULL) {
6312 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
6313 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6314 			goto done;
6315 		else
6316 			error = NULL;
6317 		if (worktree) {
6318 			repo_path =
6319 			    strdup(got_worktree_get_repo_path(worktree));
6320 			if (repo_path == NULL)
6321 				error = got_error_from_errno("strdup");
6322 			if (error)
6323 				goto done;
6324 		} else {
6325 			repo_path = strdup(cwd);
6326 			if (repo_path == NULL) {
6327 				error = got_error_from_errno("strdup");
6328 				goto done;
6329 			}
6330 		}
6331 	}
6332 
6333 	if (do_list || verify_tags) {
6334 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6335 		if (error != NULL)
6336 			goto done;
6337 		error = get_allowed_signers(&allowed_signers, repo, worktree);
6338 		if (error)
6339 			goto done;
6340 		error = get_revoked_signers(&revoked_signers, repo, worktree);
6341 		if (error)
6342 			goto done;
6343 		if (worktree) {
6344 			/* Release work tree lock. */
6345 			got_worktree_close(worktree);
6346 			worktree = NULL;
6347 		}
6348 
6349 		/*
6350 		 * Remove "cpath" promise unless needed for signature tmpfile
6351 		 * creation.
6352 		 */
6353 		if (verify_tags)
6354 		 	got_sigs_apply_unveil();
6355 		else {
6356 #ifndef PROFILE
6357 			if (pledge("stdio rpath wpath flock proc exec sendfd "
6358 			    "unveil", NULL) == -1)
6359 				err(1, "pledge");
6360 #endif
6361 		}
6362 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6363 		if (error)
6364 			goto done;
6365 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
6366 		    revoked_signers, verbosity);
6367 	} else {
6368 		error = get_gitconfig_path(&gitconfig_path);
6369 		if (error)
6370 			goto done;
6371 		error = got_repo_open(&repo, repo_path, gitconfig_path,
6372 		    pack_fds);
6373 		if (error != NULL)
6374 			goto done;
6375 
6376 		error = get_author(&tagger, repo, worktree);
6377 		if (error)
6378 			goto done;
6379 		if (signer_id == NULL)
6380 			signer_id = get_signer_id(repo, worktree);
6381 
6382 		if (tagmsg) {
6383 			if (signer_id) {
6384 				error = got_sigs_apply_unveil();
6385 				if (error)
6386 					goto done;
6387 			}
6388 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
6389 			if (error)
6390 				goto done;
6391 		}
6392 
6393 		if (commit_id_arg == NULL) {
6394 			struct got_reference *head_ref;
6395 			struct got_object_id *commit_id;
6396 			error = got_ref_open(&head_ref, repo,
6397 			    worktree ? got_worktree_get_head_ref_name(worktree)
6398 			    : GOT_REF_HEAD, 0);
6399 			if (error)
6400 				goto done;
6401 			error = got_ref_resolve(&commit_id, repo, head_ref);
6402 			got_ref_close(head_ref);
6403 			if (error)
6404 				goto done;
6405 			error = got_object_id_str(&commit_id_str, commit_id);
6406 			free(commit_id);
6407 			if (error)
6408 				goto done;
6409 		}
6410 
6411 		if (worktree) {
6412 			/* Release work tree lock. */
6413 			got_worktree_close(worktree);
6414 			worktree = NULL;
6415 		}
6416 
6417 		error = add_tag(repo, tagger, tag_name,
6418 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
6419 		    signer_id, verbosity);
6420 	}
6421 done:
6422 	if (repo) {
6423 		const struct got_error *close_err = got_repo_close(repo);
6424 		if (error == NULL)
6425 			error = close_err;
6426 	}
6427 	if (worktree)
6428 		got_worktree_close(worktree);
6429 	if (pack_fds) {
6430 		const struct got_error *pack_err =
6431 		    got_repo_pack_fds_close(pack_fds);
6432 		if (error == NULL)
6433 			error = pack_err;
6434 	}
6435 	free(cwd);
6436 	free(repo_path);
6437 	free(gitconfig_path);
6438 	free(commit_id_str);
6439 	free(tagger);
6440 	free(allowed_signers);
6441 	free(revoked_signers);
6442 	return error;
6443 }
6444 
6445 __dead static void
6446 usage_add(void)
6447 {
6448 	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
6449 	exit(1);
6450 }
6451 
6452 static const struct got_error *
6453 add_progress(void *arg, unsigned char status, const char *path)
6454 {
6455 	while (path[0] == '/')
6456 		path++;
6457 	printf("%c  %s\n", status, path);
6458 	return NULL;
6459 }
6460 
6461 static const struct got_error *
6462 cmd_add(int argc, char *argv[])
6463 {
6464 	const struct got_error *error = NULL;
6465 	struct got_repository *repo = NULL;
6466 	struct got_worktree *worktree = NULL;
6467 	char *cwd = NULL;
6468 	struct got_pathlist_head paths;
6469 	struct got_pathlist_entry *pe;
6470 	int ch, can_recurse = 0, no_ignores = 0;
6471 	int *pack_fds = NULL;
6472 
6473 	TAILQ_INIT(&paths);
6474 
6475 #ifndef PROFILE
6476 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6477 	    NULL) == -1)
6478 		err(1, "pledge");
6479 #endif
6480 
6481 	while ((ch = getopt(argc, argv, "IR")) != -1) {
6482 		switch (ch) {
6483 		case 'I':
6484 			no_ignores = 1;
6485 			break;
6486 		case 'R':
6487 			can_recurse = 1;
6488 			break;
6489 		default:
6490 			usage_add();
6491 			/* NOTREACHED */
6492 		}
6493 	}
6494 
6495 	argc -= optind;
6496 	argv += optind;
6497 
6498 	if (argc < 1)
6499 		usage_add();
6500 
6501 	cwd = getcwd(NULL, 0);
6502 	if (cwd == NULL) {
6503 		error = got_error_from_errno("getcwd");
6504 		goto done;
6505 	}
6506 
6507 	error = got_repo_pack_fds_open(&pack_fds);
6508 	if (error != NULL)
6509 		goto done;
6510 
6511 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
6512 	if (error) {
6513 		if (error->code == GOT_ERR_NOT_WORKTREE)
6514 			error = wrap_not_worktree_error(error, "add", cwd);
6515 		goto done;
6516 	}
6517 
6518 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6519 	    NULL, pack_fds);
6520 	if (error != NULL)
6521 		goto done;
6522 
6523 	error = apply_unveil(got_repo_get_path(repo), 1,
6524 	    got_worktree_get_root_path(worktree));
6525 	if (error)
6526 		goto done;
6527 
6528 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6529 	if (error)
6530 		goto done;
6531 
6532 	if (!can_recurse) {
6533 		char *ondisk_path;
6534 		struct stat sb;
6535 		TAILQ_FOREACH(pe, &paths, entry) {
6536 			if (asprintf(&ondisk_path, "%s/%s",
6537 			    got_worktree_get_root_path(worktree),
6538 			    pe->path) == -1) {
6539 				error = got_error_from_errno("asprintf");
6540 				goto done;
6541 			}
6542 			if (lstat(ondisk_path, &sb) == -1) {
6543 				if (errno == ENOENT) {
6544 					free(ondisk_path);
6545 					continue;
6546 				}
6547 				error = got_error_from_errno2("lstat",
6548 				    ondisk_path);
6549 				free(ondisk_path);
6550 				goto done;
6551 			}
6552 			free(ondisk_path);
6553 			if (S_ISDIR(sb.st_mode)) {
6554 				error = got_error_msg(GOT_ERR_BAD_PATH,
6555 				    "adding directories requires -R option");
6556 				goto done;
6557 			}
6558 		}
6559 	}
6560 
6561 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
6562 	    NULL, repo, no_ignores);
6563 done:
6564 	if (repo) {
6565 		const struct got_error *close_err = got_repo_close(repo);
6566 		if (error == NULL)
6567 			error = close_err;
6568 	}
6569 	if (worktree)
6570 		got_worktree_close(worktree);
6571 	if (pack_fds) {
6572 		const struct got_error *pack_err =
6573 		    got_repo_pack_fds_close(pack_fds);
6574 		if (error == NULL)
6575 			error = pack_err;
6576 	}
6577 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6578 	free(cwd);
6579 	return error;
6580 }
6581 
6582 __dead static void
6583 usage_remove(void)
6584 {
6585 	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
6586 	    getprogname());
6587 	exit(1);
6588 }
6589 
6590 static const struct got_error *
6591 print_remove_status(void *arg, unsigned char status,
6592     unsigned char staged_status, const char *path)
6593 {
6594 	while (path[0] == '/')
6595 		path++;
6596 	if (status == GOT_STATUS_NONEXISTENT)
6597 		return NULL;
6598 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6599 		status = GOT_STATUS_NO_CHANGE;
6600 	printf("%c%c %s\n", status, staged_status, path);
6601 	return NULL;
6602 }
6603 
6604 static const struct got_error *
6605 cmd_remove(int argc, char *argv[])
6606 {
6607 	const struct got_error *error = NULL;
6608 	struct got_worktree *worktree = NULL;
6609 	struct got_repository *repo = NULL;
6610 	const char *status_codes = NULL;
6611 	char *cwd = NULL;
6612 	struct got_pathlist_head paths;
6613 	struct got_pathlist_entry *pe;
6614 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
6615 	int ignore_missing_paths = 0;
6616 	int *pack_fds = NULL;
6617 
6618 	TAILQ_INIT(&paths);
6619 
6620 #ifndef PROFILE
6621 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6622 	    NULL) == -1)
6623 		err(1, "pledge");
6624 #endif
6625 
6626 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
6627 		switch (ch) {
6628 		case 'f':
6629 			delete_local_mods = 1;
6630 			ignore_missing_paths = 1;
6631 			break;
6632 		case 'k':
6633 			keep_on_disk = 1;
6634 			break;
6635 		case 'R':
6636 			can_recurse = 1;
6637 			break;
6638 		case 's':
6639 			for (i = 0; optarg[i] != '\0'; i++) {
6640 				switch (optarg[i]) {
6641 				case GOT_STATUS_MODIFY:
6642 					delete_local_mods = 1;
6643 					break;
6644 				case GOT_STATUS_MISSING:
6645 					ignore_missing_paths = 1;
6646 					break;
6647 				default:
6648 					errx(1, "invalid status code '%c'",
6649 					    optarg[i]);
6650 				}
6651 			}
6652 			status_codes = optarg;
6653 			break;
6654 		default:
6655 			usage_remove();
6656 			/* NOTREACHED */
6657 		}
6658 	}
6659 
6660 	argc -= optind;
6661 	argv += optind;
6662 
6663 	if (argc < 1)
6664 		usage_remove();
6665 
6666 	cwd = getcwd(NULL, 0);
6667 	if (cwd == NULL) {
6668 		error = got_error_from_errno("getcwd");
6669 		goto done;
6670 	}
6671 
6672 	error = got_repo_pack_fds_open(&pack_fds);
6673 	if (error != NULL)
6674 		goto done;
6675 
6676 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
6677 	if (error) {
6678 		if (error->code == GOT_ERR_NOT_WORKTREE)
6679 			error = wrap_not_worktree_error(error, "remove", cwd);
6680 		goto done;
6681 	}
6682 
6683 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6684 	    NULL, pack_fds);
6685 	if (error)
6686 		goto done;
6687 
6688 	error = apply_unveil(got_repo_get_path(repo), 1,
6689 	    got_worktree_get_root_path(worktree));
6690 	if (error)
6691 		goto done;
6692 
6693 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6694 	if (error)
6695 		goto done;
6696 
6697 	if (!can_recurse) {
6698 		char *ondisk_path;
6699 		struct stat sb;
6700 		TAILQ_FOREACH(pe, &paths, entry) {
6701 			if (asprintf(&ondisk_path, "%s/%s",
6702 			    got_worktree_get_root_path(worktree),
6703 			    pe->path) == -1) {
6704 				error = got_error_from_errno("asprintf");
6705 				goto done;
6706 			}
6707 			if (lstat(ondisk_path, &sb) == -1) {
6708 				if (errno == ENOENT) {
6709 					free(ondisk_path);
6710 					continue;
6711 				}
6712 				error = got_error_from_errno2("lstat",
6713 				    ondisk_path);
6714 				free(ondisk_path);
6715 				goto done;
6716 			}
6717 			free(ondisk_path);
6718 			if (S_ISDIR(sb.st_mode)) {
6719 				error = got_error_msg(GOT_ERR_BAD_PATH,
6720 				    "removing directories requires -R option");
6721 				goto done;
6722 			}
6723 		}
6724 	}
6725 
6726 	error = got_worktree_schedule_delete(worktree, &paths,
6727 	    delete_local_mods, status_codes, print_remove_status, NULL,
6728 	    repo, keep_on_disk, ignore_missing_paths);
6729 done:
6730 	if (repo) {
6731 		const struct got_error *close_err = got_repo_close(repo);
6732 		if (error == NULL)
6733 			error = close_err;
6734 	}
6735 	if (worktree)
6736 		got_worktree_close(worktree);
6737 	if (pack_fds) {
6738 		const struct got_error *pack_err =
6739 		    got_repo_pack_fds_close(pack_fds);
6740 		if (error == NULL)
6741 			error = pack_err;
6742 	}
6743 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6744 	free(cwd);
6745 	return error;
6746 }
6747 
6748 __dead static void
6749 usage_patch(void)
6750 {
6751 	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
6752 	    "[patchfile]\n", getprogname());
6753 	exit(1);
6754 }
6755 
6756 static const struct got_error *
6757 patch_from_stdin(int *patchfd)
6758 {
6759 	const struct got_error *err = NULL;
6760 	ssize_t r;
6761 	char buf[BUFSIZ];
6762 	sig_t sighup, sigint, sigquit;
6763 
6764 	*patchfd = got_opentempfd();
6765 	if (*patchfd == -1)
6766 		return got_error_from_errno("got_opentempfd");
6767 
6768 	sighup = signal(SIGHUP, SIG_DFL);
6769 	sigint = signal(SIGINT, SIG_DFL);
6770 	sigquit = signal(SIGQUIT, SIG_DFL);
6771 
6772 	for (;;) {
6773 		r = read(0, buf, sizeof(buf));
6774 		if (r == -1) {
6775 			err = got_error_from_errno("read");
6776 			break;
6777 		}
6778 		if (r == 0)
6779 			break;
6780 		if (write(*patchfd, buf, r) == -1) {
6781 			err = got_error_from_errno("write");
6782 			break;
6783 		}
6784 	}
6785 
6786 	signal(SIGHUP, sighup);
6787 	signal(SIGINT, sigint);
6788 	signal(SIGQUIT, sigquit);
6789 
6790 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
6791 		err = got_error_from_errno("lseek");
6792 
6793 	if (err != NULL) {
6794 		close(*patchfd);
6795 		*patchfd = -1;
6796 	}
6797 
6798 	return err;
6799 }
6800 
6801 struct got_patch_progress_arg {
6802 	int did_something;
6803 	int conflicts;
6804 	int rejects;
6805 };
6806 
6807 static const struct got_error *
6808 patch_progress(void *arg, const char *old, const char *new,
6809     unsigned char status, const struct got_error *error, int old_from,
6810     int old_lines, int new_from, int new_lines, int offset,
6811     int ws_mangled, const struct got_error *hunk_err)
6812 {
6813 	const char *path = new == NULL ? old : new;
6814 	struct got_patch_progress_arg *a = arg;
6815 
6816 	while (*path == '/')
6817 		path++;
6818 
6819 	if (status != GOT_STATUS_NO_CHANGE &&
6820 	    status != 0 /* per-hunk progress */) {
6821 		printf("%c  %s\n", status, path);
6822 		a->did_something = 1;
6823 	}
6824 
6825 	if (hunk_err == NULL) {
6826 		if (status == GOT_STATUS_CANNOT_UPDATE)
6827 			a->rejects++;
6828 		else if (status == GOT_STATUS_CONFLICT)
6829 			a->conflicts++;
6830 	}
6831 
6832 	if (error != NULL)
6833 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
6834 
6835 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
6836 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
6837 		    old_lines, new_from, new_lines);
6838 		if (hunk_err != NULL)
6839 			printf("%s\n", hunk_err->msg);
6840 		else if (offset != 0)
6841 			printf("applied with offset %d\n", offset);
6842 		else
6843 			printf("hunk contains mangled whitespace\n");
6844 	}
6845 
6846 	return NULL;
6847 }
6848 
6849 static void
6850 print_patch_progress_stats(struct got_patch_progress_arg *ppa)
6851 {
6852 	if (!ppa->did_something)
6853 		return;
6854 
6855 	if (ppa->conflicts > 0)
6856 		printf("Files with merge conflicts: %d\n", ppa->conflicts);
6857 
6858 	if (ppa->rejects > 0) {
6859 		printf("Files where patch failed to apply: %d\n",
6860 		    ppa->rejects);
6861 	}
6862 }
6863 
6864 static const struct got_error *
6865 cmd_patch(int argc, char *argv[])
6866 {
6867 	const struct got_error *error = NULL, *close_error = NULL;
6868 	struct got_worktree *worktree = NULL;
6869 	struct got_repository *repo = NULL;
6870 	struct got_reflist_head refs;
6871 	struct got_object_id *commit_id = NULL;
6872 	const char *commit_id_str = NULL;
6873 	struct stat sb;
6874 	const char *errstr;
6875 	char *cwd = NULL;
6876 	int ch, nop = 0, strip = -1, reverse = 0;
6877 	int patchfd;
6878 	int *pack_fds = NULL;
6879 	struct got_patch_progress_arg ppa;
6880 
6881 	TAILQ_INIT(&refs);
6882 
6883 #ifndef PROFILE
6884 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
6885 	    "unveil", NULL) == -1)
6886 		err(1, "pledge");
6887 #endif
6888 
6889 	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
6890 		switch (ch) {
6891 		case 'c':
6892 			commit_id_str = optarg;
6893 			break;
6894 		case 'n':
6895 			nop = 1;
6896 			break;
6897 		case 'p':
6898 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
6899 			if (errstr != NULL)
6900 				errx(1, "pathname strip count is %s: %s",
6901 				     errstr, optarg);
6902 			break;
6903 		case 'R':
6904 			reverse = 1;
6905 			break;
6906 		default:
6907 			usage_patch();
6908 			/* NOTREACHED */
6909 		}
6910 	}
6911 
6912 	argc -= optind;
6913 	argv += optind;
6914 
6915 	if (argc == 0) {
6916 		error = patch_from_stdin(&patchfd);
6917 		if (error)
6918 			return error;
6919 	} else if (argc == 1) {
6920 		patchfd = open(argv[0], O_RDONLY);
6921 		if (patchfd == -1) {
6922 			error = got_error_from_errno2("open", argv[0]);
6923 			return error;
6924 		}
6925 		if (fstat(patchfd, &sb) == -1) {
6926 			error = got_error_from_errno2("fstat", argv[0]);
6927 			goto done;
6928 		}
6929 		if (!S_ISREG(sb.st_mode)) {
6930 			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
6931 			goto done;
6932 		}
6933 	} else
6934 		usage_patch();
6935 
6936 	if ((cwd = getcwd(NULL, 0)) == NULL) {
6937 		error = got_error_from_errno("getcwd");
6938 		goto done;
6939 	}
6940 
6941 	error = got_repo_pack_fds_open(&pack_fds);
6942 	if (error != NULL)
6943 		goto done;
6944 
6945 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
6946 	if (error != NULL)
6947 		goto done;
6948 
6949 	const char *repo_path = got_worktree_get_repo_path(worktree);
6950 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6951 	if (error != NULL)
6952 		goto done;
6953 
6954 	error = apply_unveil(got_repo_get_path(repo), 0,
6955 	    got_worktree_get_root_path(worktree));
6956 	if (error != NULL)
6957 		goto done;
6958 
6959 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6960 	if (error)
6961 		goto done;
6962 
6963 	if (commit_id_str != NULL) {
6964 		error = got_repo_match_object_id(&commit_id, NULL,
6965 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6966 		if (error)
6967 			goto done;
6968 	}
6969 
6970 	memset(&ppa, 0, sizeof(ppa));
6971 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
6972 	    commit_id, patch_progress, &ppa, check_cancelled, NULL);
6973 	print_patch_progress_stats(&ppa);
6974 done:
6975 	got_ref_list_free(&refs);
6976 	free(commit_id);
6977 	if (repo) {
6978 		close_error = got_repo_close(repo);
6979 		if (error == NULL)
6980 			error = close_error;
6981 	}
6982 	if (worktree != NULL) {
6983 		close_error = got_worktree_close(worktree);
6984 		if (error == NULL)
6985 			error = close_error;
6986 	}
6987 	if (pack_fds) {
6988 		const struct got_error *pack_err =
6989 		    got_repo_pack_fds_close(pack_fds);
6990 		if (error == NULL)
6991 			error = pack_err;
6992 	}
6993 	free(cwd);
6994 	return error;
6995 }
6996 
6997 __dead static void
6998 usage_revert(void)
6999 {
7000 	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
7001 	    getprogname());
7002 	exit(1);
7003 }
7004 
7005 static const struct got_error *
7006 revert_progress(void *arg, unsigned char status, const char *path)
7007 {
7008 	if (status == GOT_STATUS_UNVERSIONED)
7009 		return NULL;
7010 
7011 	while (path[0] == '/')
7012 		path++;
7013 	printf("%c  %s\n", status, path);
7014 	return NULL;
7015 }
7016 
7017 struct choose_patch_arg {
7018 	FILE *patch_script_file;
7019 	const char *action;
7020 };
7021 
7022 static const struct got_error *
7023 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
7024     int nchanges, const char *action)
7025 {
7026 	const struct got_error *err;
7027 	char *line = NULL;
7028 	size_t linesize = 0;
7029 	ssize_t linelen;
7030 
7031 	switch (status) {
7032 	case GOT_STATUS_ADD:
7033 		printf("A  %s\n%s this addition? [y/n] ", path, action);
7034 		break;
7035 	case GOT_STATUS_DELETE:
7036 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
7037 		break;
7038 	case GOT_STATUS_MODIFY:
7039 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
7040 			return got_error_from_errno("fseek");
7041 		printf(GOT_COMMIT_SEP_STR);
7042 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
7043 			printf("%s", line);
7044 		if (linelen == -1 && ferror(patch_file)) {
7045 			err = got_error_from_errno("getline");
7046 			free(line);
7047 			return err;
7048 		}
7049 		free(line);
7050 		printf(GOT_COMMIT_SEP_STR);
7051 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
7052 		    path, n, nchanges, action);
7053 		break;
7054 	default:
7055 		return got_error_path(path, GOT_ERR_FILE_STATUS);
7056 	}
7057 
7058 	fflush(stdout);
7059 	return NULL;
7060 }
7061 
7062 static const struct got_error *
7063 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
7064     FILE *patch_file, int n, int nchanges)
7065 {
7066 	const struct got_error *err = NULL;
7067 	char *line = NULL;
7068 	size_t linesize = 0;
7069 	ssize_t linelen;
7070 	int resp = ' ';
7071 	struct choose_patch_arg *a = arg;
7072 
7073 	*choice = GOT_PATCH_CHOICE_NONE;
7074 
7075 	if (a->patch_script_file) {
7076 		char *nl;
7077 		err = show_change(status, path, patch_file, n, nchanges,
7078 		    a->action);
7079 		if (err)
7080 			return err;
7081 		linelen = getline(&line, &linesize, a->patch_script_file);
7082 		if (linelen == -1) {
7083 			if (ferror(a->patch_script_file))
7084 				return got_error_from_errno("getline");
7085 			return NULL;
7086 		}
7087 		nl = strchr(line, '\n');
7088 		if (nl)
7089 			*nl = '\0';
7090 		if (strcmp(line, "y") == 0) {
7091 			*choice = GOT_PATCH_CHOICE_YES;
7092 			printf("y\n");
7093 		} else if (strcmp(line, "n") == 0) {
7094 			*choice = GOT_PATCH_CHOICE_NO;
7095 			printf("n\n");
7096 		} else if (strcmp(line, "q") == 0 &&
7097 		    status == GOT_STATUS_MODIFY) {
7098 			*choice = GOT_PATCH_CHOICE_QUIT;
7099 			printf("q\n");
7100 		} else
7101 			printf("invalid response '%s'\n", line);
7102 		free(line);
7103 		return NULL;
7104 	}
7105 
7106 	while (resp != 'y' && resp != 'n' && resp != 'q') {
7107 		err = show_change(status, path, patch_file, n, nchanges,
7108 		    a->action);
7109 		if (err)
7110 			return err;
7111 		resp = getchar();
7112 		if (resp == '\n')
7113 			resp = getchar();
7114 		if (status == GOT_STATUS_MODIFY) {
7115 			if (resp != 'y' && resp != 'n' && resp != 'q') {
7116 				printf("invalid response '%c'\n", resp);
7117 				resp = ' ';
7118 			}
7119 		} else if (resp != 'y' && resp != 'n') {
7120 				printf("invalid response '%c'\n", resp);
7121 				resp = ' ';
7122 		}
7123 	}
7124 
7125 	if (resp == 'y')
7126 		*choice = GOT_PATCH_CHOICE_YES;
7127 	else if (resp == 'n')
7128 		*choice = GOT_PATCH_CHOICE_NO;
7129 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
7130 		*choice = GOT_PATCH_CHOICE_QUIT;
7131 
7132 	return NULL;
7133 }
7134 
7135 struct wt_commitable_path_arg {
7136 	struct got_pathlist_head	*commit_paths;
7137 	int				*has_changes;
7138 };
7139 
7140 /*
7141  * Shortcut work tree status callback to determine if the set of paths scanned
7142  * has at least one versioned path that is being modified and, if not NULL, is
7143  * in the arg->commit_paths list.  Set arg and return GOT_ERR_FILE_MODIFIED as
7144  * soon as a path is passed with a status that satisfies this criteria.
7145  */
7146 static const struct got_error *
7147 worktree_has_commitable_path(void *arg, unsigned char status,
7148     unsigned char staged_status, const char *path,
7149     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
7150     struct got_object_id *commit_id, int dirfd, const char *de_name)
7151 {
7152 	struct wt_commitable_path_arg *a = arg;
7153 
7154 	if (status == staged_status && (status == GOT_STATUS_DELETE))
7155 		status = GOT_STATUS_NO_CHANGE;
7156 
7157 	if (!(status == GOT_STATUS_NO_CHANGE ||
7158 	    status == GOT_STATUS_UNVERSIONED) ||
7159 	    staged_status != GOT_STATUS_NO_CHANGE) {
7160 		if (a->commit_paths != NULL) {
7161 			struct got_pathlist_entry *pe;
7162 
7163 			TAILQ_FOREACH(pe, a->commit_paths, entry) {
7164 				if (strncmp(path, pe->path,
7165 				    pe->path_len) == 0) {
7166 					*a->has_changes = 1;
7167 					break;
7168 				}
7169 			}
7170 		} else
7171 			*a->has_changes = 1;
7172 
7173 		if (*a->has_changes)
7174 			return got_error(GOT_ERR_FILE_MODIFIED);
7175 	}
7176 
7177 	return NULL;
7178 }
7179 
7180 /*
7181  * Check that the changeset of the commit identified by id is
7182  * comprised of at least one modified path that is being committed.
7183  */
7184 static const struct got_error *
7185 commit_path_changed_in_worktree(struct wt_commitable_path_arg *wcpa,
7186     struct got_object_id *id, struct got_worktree *worktree,
7187     struct got_repository *repo)
7188 {
7189 	const struct got_error		*err;
7190 	struct got_pathlist_head	 paths;
7191 	struct got_commit_object	*commit = NULL, *pcommit = NULL;
7192 	struct got_tree_object		*tree = NULL, *ptree = NULL;
7193 	struct got_object_qid		*pid;
7194 
7195 	TAILQ_INIT(&paths);
7196 
7197 	err = got_object_open_as_commit(&commit, repo, id);
7198 	if (err)
7199 		goto done;
7200 
7201 	err = got_object_open_as_tree(&tree, repo,
7202 	    got_object_commit_get_tree_id(commit));
7203 	if (err)
7204 		goto done;
7205 
7206 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
7207 	if (pid != NULL) {
7208 		err = got_object_open_as_commit(&pcommit, repo, &pid->id);
7209 		if (err)
7210 			goto done;
7211 
7212 		err = got_object_open_as_tree(&ptree, repo,
7213 		    got_object_commit_get_tree_id(pcommit));
7214 		if (err)
7215 			goto done;
7216 	}
7217 
7218 	err = got_diff_tree(ptree, tree, NULL, NULL, -1, -1, "", "", repo,
7219 	    got_diff_tree_collect_changed_paths, &paths, 0);
7220 	if (err)
7221 		goto done;
7222 
7223 	err = got_worktree_status(worktree, &paths, repo, 0,
7224 	    worktree_has_commitable_path, wcpa, check_cancelled, NULL);
7225 	if (err && err->code == GOT_ERR_FILE_MODIFIED) {
7226 		/*
7227 		 * At least one changed path in the referenced commit is
7228 		 * modified in the work tree, that's all we need to know!
7229 		 */
7230 		err = NULL;
7231 	}
7232 
7233 done:
7234 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
7235 	if (commit)
7236 		got_object_commit_close(commit);
7237 	if (pcommit)
7238 		got_object_commit_close(pcommit);
7239 	if (tree)
7240 		got_object_tree_close(tree);
7241 	if (ptree)
7242 		got_object_tree_close(ptree);
7243 	return err;
7244 }
7245 
7246 /*
7247  * Remove any "logmsg" reference comprised entirely of paths that have
7248  * been reverted in this work tree. If any path in the logmsg ref changeset
7249  * remains in a changed state in the worktree, do not remove the reference.
7250  */
7251 static const struct got_error *
7252 rm_logmsg_ref(struct got_worktree *worktree, struct got_repository *repo)
7253 {
7254 	const struct got_error		*err;
7255 	struct got_reflist_head		 refs;
7256 	struct got_reflist_entry	*re;
7257 	struct got_commit_object	*commit = NULL;
7258 	struct got_object_id		*commit_id = NULL;
7259 	struct wt_commitable_path_arg	 wcpa;
7260 	char				*uuidstr = NULL;
7261 
7262 	TAILQ_INIT(&refs);
7263 
7264 	err = got_worktree_get_uuid(&uuidstr, worktree);
7265 	if (err)
7266 		goto done;
7267 
7268 	err = got_ref_list(&refs, repo, "refs/got/worktree",
7269 	    got_ref_cmp_by_name, repo);
7270 	if (err)
7271 		goto done;
7272 
7273 	TAILQ_FOREACH(re, &refs, entry) {
7274 		const char	*refname;
7275 		int		 has_changes = 0;
7276 
7277 		refname = got_ref_get_name(re->ref);
7278 
7279 		if (!strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
7280 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN))
7281 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
7282 		else if (!strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
7283 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN))
7284 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
7285 		else
7286 			continue;
7287 
7288 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
7289 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
7290 		else
7291 			continue;
7292 
7293 		err = got_repo_match_object_id(&commit_id, NULL, refname,
7294 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
7295 		if (err)
7296 			goto done;
7297 
7298 		err = got_object_open_as_commit(&commit, repo, commit_id);
7299 		if (err)
7300 			goto done;
7301 
7302 		wcpa.commit_paths = NULL;
7303 		wcpa.has_changes = &has_changes;
7304 
7305 		err = commit_path_changed_in_worktree(&wcpa, commit_id,
7306 		    worktree, repo);
7307 		if (err)
7308 			goto done;
7309 
7310 		if (!has_changes) {
7311 			err = got_ref_delete(re->ref, repo);
7312 			if (err)
7313 				goto done;
7314 		}
7315 
7316 		got_object_commit_close(commit);
7317 		commit = NULL;
7318 		free(commit_id);
7319 		commit_id = NULL;
7320 	}
7321 
7322 done:
7323 	free(uuidstr);
7324 	free(commit_id);
7325 	got_ref_list_free(&refs);
7326 	if (commit)
7327 		got_object_commit_close(commit);
7328 	return err;
7329 }
7330 
7331 static const struct got_error *
7332 cmd_revert(int argc, char *argv[])
7333 {
7334 	const struct got_error *error = NULL;
7335 	struct got_worktree *worktree = NULL;
7336 	struct got_repository *repo = NULL;
7337 	char *cwd = NULL, *path = NULL;
7338 	struct got_pathlist_head paths;
7339 	struct got_pathlist_entry *pe;
7340 	int ch, can_recurse = 0, pflag = 0;
7341 	FILE *patch_script_file = NULL;
7342 	const char *patch_script_path = NULL;
7343 	struct choose_patch_arg cpa;
7344 	int *pack_fds = NULL;
7345 
7346 	TAILQ_INIT(&paths);
7347 
7348 #ifndef PROFILE
7349 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7350 	    "unveil", NULL) == -1)
7351 		err(1, "pledge");
7352 #endif
7353 
7354 	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
7355 		switch (ch) {
7356 		case 'F':
7357 			patch_script_path = optarg;
7358 			break;
7359 		case 'p':
7360 			pflag = 1;
7361 			break;
7362 		case 'R':
7363 			can_recurse = 1;
7364 			break;
7365 		default:
7366 			usage_revert();
7367 			/* NOTREACHED */
7368 		}
7369 	}
7370 
7371 	argc -= optind;
7372 	argv += optind;
7373 
7374 	if (argc < 1)
7375 		usage_revert();
7376 	if (patch_script_path && !pflag)
7377 		errx(1, "-F option can only be used together with -p option");
7378 
7379 	cwd = getcwd(NULL, 0);
7380 	if (cwd == NULL) {
7381 		error = got_error_from_errno("getcwd");
7382 		goto done;
7383 	}
7384 
7385 	error = got_repo_pack_fds_open(&pack_fds);
7386 	if (error != NULL)
7387 		goto done;
7388 
7389 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
7390 	if (error) {
7391 		if (error->code == GOT_ERR_NOT_WORKTREE)
7392 			error = wrap_not_worktree_error(error, "revert", cwd);
7393 		goto done;
7394 	}
7395 
7396 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7397 	    NULL, pack_fds);
7398 	if (error != NULL)
7399 		goto done;
7400 
7401 	if (patch_script_path) {
7402 		patch_script_file = fopen(patch_script_path, "re");
7403 		if (patch_script_file == NULL) {
7404 			error = got_error_from_errno2("fopen",
7405 			    patch_script_path);
7406 			goto done;
7407 		}
7408 	}
7409 
7410 	/*
7411 	 * XXX "c" perm needed on repo dir to delete merge references.
7412 	 */
7413 	error = apply_unveil(got_repo_get_path(repo), 0,
7414 	    got_worktree_get_root_path(worktree));
7415 	if (error)
7416 		goto done;
7417 
7418 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7419 	if (error)
7420 		goto done;
7421 
7422 	if (!can_recurse) {
7423 		char *ondisk_path;
7424 		struct stat sb;
7425 		TAILQ_FOREACH(pe, &paths, entry) {
7426 			if (asprintf(&ondisk_path, "%s/%s",
7427 			    got_worktree_get_root_path(worktree),
7428 			    pe->path) == -1) {
7429 				error = got_error_from_errno("asprintf");
7430 				goto done;
7431 			}
7432 			if (lstat(ondisk_path, &sb) == -1) {
7433 				if (errno == ENOENT) {
7434 					free(ondisk_path);
7435 					continue;
7436 				}
7437 				error = got_error_from_errno2("lstat",
7438 				    ondisk_path);
7439 				free(ondisk_path);
7440 				goto done;
7441 			}
7442 			free(ondisk_path);
7443 			if (S_ISDIR(sb.st_mode)) {
7444 				error = got_error_msg(GOT_ERR_BAD_PATH,
7445 				    "reverting directories requires -R option");
7446 				goto done;
7447 			}
7448 		}
7449 	}
7450 
7451 	cpa.patch_script_file = patch_script_file;
7452 	cpa.action = "revert";
7453 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
7454 	    pflag ? choose_patch : NULL, &cpa, repo);
7455 
7456 	error = rm_logmsg_ref(worktree, repo);
7457 done:
7458 	if (patch_script_file && fclose(patch_script_file) == EOF &&
7459 	    error == NULL)
7460 		error = got_error_from_errno2("fclose", patch_script_path);
7461 	if (repo) {
7462 		const struct got_error *close_err = got_repo_close(repo);
7463 		if (error == NULL)
7464 			error = close_err;
7465 	}
7466 	if (worktree)
7467 		got_worktree_close(worktree);
7468 	if (pack_fds) {
7469 		const struct got_error *pack_err =
7470 		    got_repo_pack_fds_close(pack_fds);
7471 		if (error == NULL)
7472 			error = pack_err;
7473 	}
7474 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7475 	free(path);
7476 	free(cwd);
7477 	return error;
7478 }
7479 
7480 __dead static void
7481 usage_commit(void)
7482 {
7483 	fprintf(stderr, "usage: %s commit [-CNnS] [-A author] [-F path] "
7484 	    "[-m message] [path ...]\n", getprogname());
7485 	exit(1);
7486 }
7487 
7488 struct collect_commit_logmsg_arg {
7489 	const char *cmdline_log;
7490 	const char *prepared_log;
7491 	const char *merged_log;
7492 	int non_interactive;
7493 	const char *editor;
7494 	const char *worktree_path;
7495 	const char *repo_path;
7496 	const char *dial_proto;
7497 	char *logmsg_path;
7498 };
7499 
7500 static const struct got_error *
7501 read_prepared_logmsg(char **logmsg, const char *path)
7502 {
7503 	const struct got_error *err = NULL;
7504 	FILE *f = NULL;
7505 	struct stat sb;
7506 	size_t r;
7507 
7508 	*logmsg = NULL;
7509 	memset(&sb, 0, sizeof(sb));
7510 
7511 	f = fopen(path, "re");
7512 	if (f == NULL)
7513 		return got_error_from_errno2("fopen", path);
7514 
7515 	if (fstat(fileno(f), &sb) == -1) {
7516 		err = got_error_from_errno2("fstat", path);
7517 		goto done;
7518 	}
7519 	if (sb.st_size == 0) {
7520 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
7521 		goto done;
7522 	}
7523 
7524 	*logmsg = malloc(sb.st_size + 1);
7525 	if (*logmsg == NULL) {
7526 		err = got_error_from_errno("malloc");
7527 		goto done;
7528 	}
7529 
7530 	r = fread(*logmsg, 1, sb.st_size, f);
7531 	if (r != sb.st_size) {
7532 		if (ferror(f))
7533 			err = got_error_from_errno2("fread", path);
7534 		else
7535 			err = got_error(GOT_ERR_IO);
7536 		goto done;
7537 	}
7538 	(*logmsg)[sb.st_size] = '\0';
7539 done:
7540 	if (fclose(f) == EOF && err == NULL)
7541 		err = got_error_from_errno2("fclose", path);
7542 	if (err) {
7543 		free(*logmsg);
7544 		*logmsg = NULL;
7545 	}
7546 	return err;
7547 }
7548 
7549 static const struct got_error *
7550 collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
7551     const char *diff_path, char **logmsg, void *arg)
7552 {
7553 	char *initial_content = NULL;
7554 	struct got_pathlist_entry *pe;
7555 	const struct got_error *err = NULL;
7556 	char *template = NULL;
7557 	char *prepared_msg = NULL, *merged_msg = NULL;
7558 	struct collect_commit_logmsg_arg *a = arg;
7559 	int initial_content_len;
7560 	int fd = -1;
7561 	size_t len;
7562 
7563 	/* if a message was specified on the command line, just use it */
7564 	if (a->cmdline_log != NULL && *a->cmdline_log != '\0') {
7565 		len = strlen(a->cmdline_log) + 1;
7566 		*logmsg = malloc(len + 1);
7567 		if (*logmsg == NULL)
7568 			return got_error_from_errno("malloc");
7569 		strlcpy(*logmsg, a->cmdline_log, len);
7570 		return NULL;
7571 	} else if (a->prepared_log != NULL && a->non_interactive)
7572 		return read_prepared_logmsg(logmsg, a->prepared_log);
7573 
7574 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
7575 		return got_error_from_errno("asprintf");
7576 
7577 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
7578 	if (err)
7579 		goto done;
7580 
7581 	if (a->prepared_log) {
7582 		err = read_prepared_logmsg(&prepared_msg, a->prepared_log);
7583 		if (err)
7584 			goto done;
7585 	} else if (a->merged_log) {
7586 		err = read_prepared_logmsg(&merged_msg, a->merged_log);
7587 		if (err)
7588 			goto done;
7589 	}
7590 
7591 	initial_content_len = asprintf(&initial_content,
7592 	    "%s%s\n# changes to be committed:\n",
7593 	    prepared_msg ? prepared_msg : "",
7594 	    merged_msg ? merged_msg : "");
7595 	if (initial_content_len == -1) {
7596 		err = got_error_from_errno("asprintf");
7597 		goto done;
7598 	}
7599 
7600 	if (write(fd, initial_content, initial_content_len) == -1) {
7601 		err = got_error_from_errno2("write", a->logmsg_path);
7602 		goto done;
7603 	}
7604 
7605 	TAILQ_FOREACH(pe, commitable_paths, entry) {
7606 		struct got_commitable *ct = pe->data;
7607 		dprintf(fd, "#  %c  %s\n",
7608 		    got_commitable_get_status(ct),
7609 		    got_commitable_get_path(ct));
7610 	}
7611 
7612 	if (diff_path) {
7613 		dprintf(fd, "# detailed changes can be viewed in %s\n",
7614 		    diff_path);
7615 	}
7616 
7617 	if (close(fd) == -1) {
7618 		err = got_error_from_errno2("close", a->logmsg_path);
7619 		goto done;
7620 	}
7621 	fd = -1;
7622 
7623 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
7624 	    initial_content_len, a->prepared_log ? 0 : 1);
7625 done:
7626 	free(initial_content);
7627 	free(template);
7628 	free(prepared_msg);
7629 	free(merged_msg);
7630 
7631 	if (fd != -1 && close(fd) == -1 && err == NULL)
7632 		err = got_error_from_errno2("close", a->logmsg_path);
7633 
7634 	/* Editor is done; we can now apply unveil(2) */
7635 	if (err == NULL)
7636 		err = got_dial_apply_unveil(a->dial_proto);
7637 	if (err == NULL)
7638 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
7639 	if (err) {
7640 		free(*logmsg);
7641 		*logmsg = NULL;
7642 	}
7643 	return err;
7644 }
7645 
7646 static const struct got_error *
7647 cat_logmsg(FILE *f, struct got_commit_object *commit, const char *idstr,
7648     const char *type, int has_content)
7649 {
7650 	const struct got_error	*err = NULL;
7651 	char			*logmsg = NULL;
7652 
7653 	err = got_object_commit_get_logmsg(&logmsg, commit);
7654 	if (err)
7655 		return err;
7656 
7657 	if (fprintf(f, "%s# log message of %s commit %s:%s",
7658 	    has_content ? "\n" : "", type, idstr, logmsg) < 0)
7659 		err = got_ferror(f, GOT_ERR_IO);
7660 
7661 	free(logmsg);
7662 	return err;
7663 }
7664 
7665 /*
7666  * Lookup "logmsg" references of backed-out and cherrypicked commits
7667  * belonging to the current work tree. If found, and the worktree has
7668  * at least one modified file that was changed in the referenced commit,
7669  * add its log message to a new temporary file at *logmsg_path.
7670  * Add all refs found to matched_refs to be scheduled for removal on
7671  * successful commit.
7672  */
7673 static const struct got_error *
7674 lookup_logmsg_ref(char **logmsg_path, struct got_pathlist_head *paths,
7675     struct got_reflist_head *matched_refs, struct got_worktree *worktree,
7676     struct got_repository *repo)
7677 {
7678 	const struct got_error		*err;
7679 	struct got_commit_object	*commit = NULL;
7680 	struct got_object_id		*id = NULL;
7681 	struct got_reflist_head		 refs;
7682 	struct got_reflist_entry	*re, *re_match;
7683 	FILE				*f = NULL;
7684 	char				*uuidstr = NULL;
7685 	int				 added_logmsg = 0;
7686 
7687 	TAILQ_INIT(&refs);
7688 
7689 	*logmsg_path = NULL;
7690 
7691 	err = got_worktree_get_uuid(&uuidstr, worktree);
7692 	if (err)
7693 		goto done;
7694 
7695 	err = got_ref_list(&refs, repo, "refs/got/worktree",
7696 	    got_ref_cmp_by_name, repo);
7697 	if (err)
7698 		goto done;
7699 
7700 	TAILQ_FOREACH(re, &refs, entry) {
7701 		const char			*refname, *type;
7702 		struct wt_commitable_path_arg	 wcpa;
7703 		int				 add_logmsg = 0;
7704 
7705 		refname = got_ref_get_name(re->ref);
7706 
7707 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
7708 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
7709 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
7710 			type = "cherrypicked";
7711 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
7712 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
7713 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
7714 			type = "backed-out";
7715 		} else
7716 			continue;
7717 
7718 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
7719 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
7720 		else
7721 			continue;
7722 
7723 		err = got_repo_match_object_id(&id, NULL, refname,
7724 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
7725 		if (err)
7726 			goto done;
7727 
7728 		err = got_object_open_as_commit(&commit, repo, id);
7729 		if (err)
7730 			goto done;
7731 
7732 		wcpa.commit_paths = paths;
7733 		wcpa.has_changes = &add_logmsg;
7734 
7735 		err = commit_path_changed_in_worktree(&wcpa, id,
7736 		    worktree, repo);
7737 		if (err)
7738 			goto done;
7739 
7740 		if (add_logmsg) {
7741 			if (f == NULL) {
7742 				err = got_opentemp_named(logmsg_path, &f,
7743 				    "got-commit-logmsg", "");
7744 				if (err)
7745 					goto done;
7746 			}
7747 			err = cat_logmsg(f, commit, refname, type,
7748 			    added_logmsg);
7749 			if (err)
7750 				goto done;
7751 			if (!added_logmsg)
7752 				++added_logmsg;
7753 
7754 			err = got_reflist_entry_dup(&re_match, re);
7755 			if (err)
7756 				goto done;
7757 			TAILQ_INSERT_HEAD(matched_refs, re_match, entry);
7758 		}
7759 
7760 		got_object_commit_close(commit);
7761 		commit = NULL;
7762 		free(id);
7763 		id = NULL;
7764 	}
7765 
7766 done:
7767 	free(id);
7768 	free(uuidstr);
7769 	got_ref_list_free(&refs);
7770 	if (commit)
7771 		got_object_commit_close(commit);
7772 	if (f && fclose(f) == EOF && err == NULL)
7773 		err = got_error_from_errno("fclose");
7774 	if (!added_logmsg) {
7775 		if (*logmsg_path && unlink(*logmsg_path) != 0 && err == NULL)
7776 			err = got_error_from_errno2("unlink", *logmsg_path);
7777 		*logmsg_path = NULL;
7778 	}
7779 	return err;
7780 }
7781 
7782 static const struct got_error *
7783 cmd_commit(int argc, char *argv[])
7784 {
7785 	const struct got_error *error = NULL;
7786 	struct got_worktree *worktree = NULL;
7787 	struct got_repository *repo = NULL;
7788 	char *cwd = NULL, *id_str = NULL;
7789 	struct got_object_id *id = NULL;
7790 	const char *logmsg = NULL;
7791 	char *prepared_logmsg = NULL, *merged_logmsg = NULL;
7792 	struct collect_commit_logmsg_arg cl_arg;
7793 	const char *author = NULL;
7794 	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
7795 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
7796 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
7797 	int show_diff = 1, commit_conflicts = 0;
7798 	struct got_pathlist_head paths;
7799 	struct got_reflist_head refs;
7800 	struct got_reflist_entry *re;
7801 	int *pack_fds = NULL;
7802 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
7803 	const struct got_remote_repo *remotes, *remote = NULL;
7804 	int nremotes;
7805 	char *proto = NULL, *host = NULL, *port = NULL;
7806 	char *repo_name = NULL, *server_path = NULL;
7807 	const char *remote_name;
7808 	int verbosity = 0;
7809 	int i;
7810 
7811 	TAILQ_INIT(&refs);
7812 	TAILQ_INIT(&paths);
7813 	cl_arg.logmsg_path = NULL;
7814 
7815 #ifndef PROFILE
7816 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7817 	    "unveil", NULL) == -1)
7818 		err(1, "pledge");
7819 #endif
7820 
7821 	while ((ch = getopt(argc, argv, "A:CF:m:NnS")) != -1) {
7822 		switch (ch) {
7823 		case 'A':
7824 			author = optarg;
7825 			error = valid_author(author);
7826 			if (error)
7827 				return error;
7828 			break;
7829 		case 'C':
7830 			commit_conflicts = 1;
7831 			break;
7832 		case 'F':
7833 			if (logmsg != NULL)
7834 				option_conflict('F', 'm');
7835 			prepared_logmsg = realpath(optarg, NULL);
7836 			if (prepared_logmsg == NULL)
7837 				return got_error_from_errno2("realpath",
7838 				    optarg);
7839 			break;
7840 		case 'm':
7841 			if (prepared_logmsg)
7842 				option_conflict('m', 'F');
7843 			logmsg = optarg;
7844 			break;
7845 		case 'N':
7846 			non_interactive = 1;
7847 			break;
7848 		case 'n':
7849 			show_diff = 0;
7850 			break;
7851 		case 'S':
7852 			allow_bad_symlinks = 1;
7853 			break;
7854 		default:
7855 			usage_commit();
7856 			/* NOTREACHED */
7857 		}
7858 	}
7859 
7860 	argc -= optind;
7861 	argv += optind;
7862 
7863 	cwd = getcwd(NULL, 0);
7864 	if (cwd == NULL) {
7865 		error = got_error_from_errno("getcwd");
7866 		goto done;
7867 	}
7868 
7869 	error = got_repo_pack_fds_open(&pack_fds);
7870 	if (error != NULL)
7871 		goto done;
7872 
7873 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
7874 	if (error) {
7875 		if (error->code == GOT_ERR_NOT_WORKTREE)
7876 			error = wrap_not_worktree_error(error, "commit", cwd);
7877 		goto done;
7878 	}
7879 
7880 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
7881 	if (error)
7882 		goto done;
7883 	if (rebase_in_progress) {
7884 		error = got_error(GOT_ERR_REBASING);
7885 		goto done;
7886 	}
7887 
7888 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
7889 	    worktree);
7890 	if (error)
7891 		goto done;
7892 
7893 	error = get_gitconfig_path(&gitconfig_path);
7894 	if (error)
7895 		goto done;
7896 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7897 	    gitconfig_path, pack_fds);
7898 	if (error != NULL)
7899 		goto done;
7900 
7901 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
7902 	if (error)
7903 		goto done;
7904 	if (merge_in_progress) {
7905 		error = got_error(GOT_ERR_MERGE_BUSY);
7906 		goto done;
7907 	}
7908 
7909 	error = get_author(&committer, repo, worktree);
7910 	if (error)
7911 		goto done;
7912 
7913 	if (author == NULL)
7914 		author = committer;
7915 
7916 	remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
7917 	worktree_conf = got_worktree_get_gotconfig(worktree);
7918 	if (worktree_conf) {
7919 		got_gotconfig_get_remotes(&nremotes, &remotes,
7920 		    worktree_conf);
7921 		for (i = 0; i < nremotes; i++) {
7922 			if (strcmp(remotes[i].name, remote_name) == 0) {
7923 				remote = &remotes[i];
7924 				break;
7925 			}
7926 		}
7927 	}
7928 	if (remote == NULL) {
7929 		repo_conf = got_repo_get_gotconfig(repo);
7930 		if (repo_conf) {
7931 			got_gotconfig_get_remotes(&nremotes, &remotes,
7932 			    repo_conf);
7933 			for (i = 0; i < nremotes; i++) {
7934 				if (strcmp(remotes[i].name, remote_name) == 0) {
7935 					remote = &remotes[i];
7936 					break;
7937 				}
7938 			}
7939 		}
7940 	}
7941 	if (remote == NULL) {
7942 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
7943 		for (i = 0; i < nremotes; i++) {
7944 			if (strcmp(remotes[i].name, remote_name) == 0) {
7945 				remote = &remotes[i];
7946 				break;
7947 			}
7948 		}
7949 	}
7950 	if (remote == NULL) {
7951 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
7952 		goto done;
7953 	}
7954 
7955 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
7956 	    &repo_name, remote->fetch_url);
7957 	if (error)
7958 		goto done;
7959 
7960 	if (strcmp(proto, "git") == 0) {
7961 #ifndef PROFILE
7962 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7963 		    "sendfd dns inet unveil", NULL) == -1)
7964 			err(1, "pledge");
7965 #endif
7966 	} else if (strcmp(proto, "git+ssh") == 0 ||
7967 	    strcmp(proto, "ssh") == 0) {
7968 #ifndef PROFILE
7969 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7970 		    "sendfd unveil", NULL) == -1)
7971 			err(1, "pledge");
7972 #endif
7973 	} else if (strcmp(proto, "http") == 0 ||
7974 	    strcmp(proto, "git+http") == 0) {
7975 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
7976 		goto done;
7977 	} else {
7978 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
7979 		goto done;
7980 	}
7981 
7982 
7983 	/*if (verbosity >= 0) {
7984 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
7985 		    remote->name, proto, host,
7986 		    port ? ":" : "", port ? port : "",
7987 		    *server_path == '/' ? "" : "/", server_path);
7988 	}*/
7989 
7990 	/*
7991 	 * unveil(2) traverses exec(2); if an editor is used we have
7992 	 * to apply unveil after the log message has been written during
7993 	 * the callback.
7994 	 */
7995 	if (logmsg == NULL || strlen(logmsg) == 0)
7996 		error = get_editor(&editor);
7997 	else {
7998 		error = got_dial_apply_unveil(proto);
7999 		if (error)
8000 			goto done;
8001 		error = apply_unveil(got_repo_get_path(repo), 0,
8002 		    got_worktree_get_root_path(worktree));
8003 	}
8004 	if (error)
8005 		goto done;
8006 
8007 	if (prepared_logmsg == NULL) {
8008 		error = lookup_logmsg_ref(&merged_logmsg,
8009 		    argc > 0 ? &paths : NULL, &refs, worktree, repo);
8010 		if (error)
8011 			goto done;
8012 	}
8013 
8014 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8015 	if (error)
8016 		goto done;
8017 
8018 	cl_arg.editor = editor;
8019 	cl_arg.cmdline_log = logmsg;
8020 	cl_arg.prepared_log = prepared_logmsg;
8021 	cl_arg.merged_log = merged_logmsg;
8022 	cl_arg.non_interactive = non_interactive;
8023 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
8024 	cl_arg.repo_path = got_repo_get_path(repo);
8025 	cl_arg.dial_proto = proto;
8026 	error = got_worktree_cvg_commit(&id, worktree, &paths, author,
8027 	    committer, allow_bad_symlinks, show_diff, commit_conflicts,
8028 	    collect_commit_logmsg, &cl_arg, print_status, NULL, proto, host,
8029 	    port, server_path, verbosity, remote, check_cancelled, repo);
8030 	if (error) {
8031 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
8032 		    cl_arg.logmsg_path != NULL)
8033 			preserve_logmsg = 1;
8034 		goto done;
8035 	}
8036 
8037 	error = got_object_id_str(&id_str, id);
8038 	if (error)
8039 		goto done;
8040 	printf("Created commit %s\n", id_str);
8041 
8042 	TAILQ_FOREACH(re, &refs, entry) {
8043 		error = got_ref_delete(re->ref, repo);
8044 		if (error)
8045 			goto done;
8046 	}
8047 
8048 done:
8049 	if (preserve_logmsg) {
8050 		fprintf(stderr, "%s: log message preserved in %s\n",
8051 		    getprogname(), cl_arg.logmsg_path);
8052 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
8053 	    error == NULL)
8054 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
8055 	free(cl_arg.logmsg_path);
8056 	if (merged_logmsg && unlink(merged_logmsg) == -1 && error == NULL)
8057 		error = got_error_from_errno2("unlink", merged_logmsg);
8058 	free(merged_logmsg);
8059 	if (repo) {
8060 		const struct got_error *close_err = got_repo_close(repo);
8061 		if (error == NULL)
8062 			error = close_err;
8063 	}
8064 	if (worktree)
8065 		got_worktree_close(worktree);
8066 	if (pack_fds) {
8067 		const struct got_error *pack_err =
8068 		    got_repo_pack_fds_close(pack_fds);
8069 		if (error == NULL)
8070 			error = pack_err;
8071 	}
8072 	got_ref_list_free(&refs);
8073 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8074 	free(cwd);
8075 	free(id_str);
8076 	free(gitconfig_path);
8077 	free(editor);
8078 	free(committer);
8079 	free(prepared_logmsg);
8080 	return error;
8081 }
8082 
8083 /*
8084  * Print and if delete is set delete all ref_prefix references.
8085  * If wanted_ref is not NULL, only print or delete this reference.
8086  */
8087 static const struct got_error *
8088 process_logmsg_refs(const char *ref_prefix, size_t prefix_len,
8089     const char *wanted_ref, int delete, struct got_worktree *worktree,
8090     struct got_repository *repo)
8091 {
8092 	const struct got_error			*err;
8093 	struct got_pathlist_head		 paths;
8094 	struct got_reflist_head			 refs;
8095 	struct got_reflist_entry		*re;
8096 	struct got_reflist_object_id_map	*refs_idmap = NULL;
8097 	struct got_commit_object		*commit = NULL;
8098 	struct got_object_id			*id = NULL;
8099 	const char				*header_prefix;
8100 	char					*uuidstr = NULL;
8101 	int					 found = 0;
8102 
8103 	TAILQ_INIT(&refs);
8104 	TAILQ_INIT(&paths);
8105 
8106 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, repo);
8107 	if (err)
8108 		goto done;
8109 
8110 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
8111 	if (err)
8112 		goto done;
8113 
8114 	if (worktree != NULL) {
8115 		err = got_worktree_get_uuid(&uuidstr, worktree);
8116 		if (err)
8117 			goto done;
8118 	}
8119 
8120 	if (wanted_ref) {
8121 		if (strncmp(wanted_ref, "refs/heads/", 11) == 0)
8122 			wanted_ref += 11;
8123 	}
8124 
8125 	if (strcmp(ref_prefix, GOT_WORKTREE_BACKOUT_REF_PREFIX) == 0)
8126 		header_prefix = "backout";
8127 	else
8128 		header_prefix = "cherrypick";
8129 
8130 	TAILQ_FOREACH(re, &refs, entry) {
8131 		const char *refname, *wt;
8132 
8133 		refname = got_ref_get_name(re->ref);
8134 
8135 		err = check_cancelled(NULL);
8136 		if (err)
8137 			goto done;
8138 
8139 		if (strncmp(refname, ref_prefix, prefix_len) == 0)
8140 			refname += prefix_len + 1;  /* skip '-' delimiter */
8141 		else
8142 			continue;
8143 
8144 		wt = refname;
8145 
8146 		if (worktree == NULL || strncmp(refname, uuidstr,
8147 		    GOT_WORKTREE_UUID_STRLEN) == 0)
8148 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
8149 		else
8150 			continue;
8151 
8152 		err = got_repo_match_object_id(&id, NULL, refname,
8153 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8154 		if (err)
8155 			goto done;
8156 
8157 		err = got_object_open_as_commit(&commit, repo, id);
8158 		if (err)
8159 			goto done;
8160 
8161 		if (wanted_ref)
8162 			found = strncmp(wanted_ref, refname,
8163 			    strlen(wanted_ref)) == 0;
8164 		if (wanted_ref && !found) {
8165 			struct got_reflist_head	*ci_refs;
8166 
8167 			ci_refs = got_reflist_object_id_map_lookup(refs_idmap,
8168 			    id);
8169 
8170 			if (ci_refs) {
8171 				char		*refs_str = NULL;
8172 				char const	*r = NULL;
8173 
8174 				err = build_refs_str(&refs_str, ci_refs, id,
8175 				    repo, 1);
8176 				if (err)
8177 					goto done;
8178 
8179 				r = refs_str;
8180 				while (r) {
8181 					if (strncmp(r, wanted_ref,
8182 					    strlen(wanted_ref)) == 0) {
8183 						found = 1;
8184 						break;
8185 					}
8186 					r = strchr(r, ' ');
8187 					if (r)
8188 						++r;
8189 				}
8190 				free(refs_str);
8191 			}
8192 		}
8193 
8194 		if (wanted_ref == NULL || found) {
8195 			if (delete) {
8196 				err = got_ref_delete(re->ref, repo);
8197 				if (err)
8198 					goto done;
8199 				printf("Deleted: ");
8200 				err = print_commit_oneline(commit, id, repo,
8201 				    refs_idmap);
8202 			} else {
8203 				/*
8204 				 * Print paths modified by commit to help
8205 				 * associate commits with worktree changes.
8206 				 */
8207 				err = get_changed_paths(&paths, commit,
8208 				    repo, NULL);
8209 				if (err)
8210 					goto done;
8211 
8212 				err = print_commit(commit, id, repo, NULL,
8213 				    &paths, NULL, 0, 0, refs_idmap, NULL,
8214 				    header_prefix);
8215 				got_pathlist_free(&paths,
8216 				    GOT_PATHLIST_FREE_ALL);
8217 
8218 				if (worktree == NULL)
8219 					printf("work tree: %.*s\n\n",
8220 					    GOT_WORKTREE_UUID_STRLEN, wt);
8221 			}
8222 			if (err || found)
8223 				goto done;
8224 		}
8225 
8226 		got_object_commit_close(commit);
8227 		commit = NULL;
8228 		free(id);
8229 		id = NULL;
8230 	}
8231 
8232 	if (wanted_ref != NULL && !found)
8233 		err = got_error_fmt(GOT_ERR_NOT_REF, "%s", wanted_ref);
8234 
8235 done:
8236 	free(id);
8237 	free(uuidstr);
8238 	got_ref_list_free(&refs);
8239 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
8240 	if (refs_idmap)
8241 		got_reflist_object_id_map_free(refs_idmap);
8242 	if (commit)
8243 		got_object_commit_close(commit);
8244 	return err;
8245 }
8246 
8247 /*
8248  * Create new temp "logmsg" ref of the backed-out or cherrypicked commit
8249  * identified by id for log messages to prepopulate the editor on commit.
8250  */
8251 static const struct got_error *
8252 logmsg_ref(struct got_object_id *id, const char *prefix,
8253     struct got_worktree *worktree, struct got_repository *repo)
8254 {
8255 	const struct got_error	*err = NULL;
8256 	char			*idstr, *ref = NULL, *refname = NULL;
8257 	int			 histedit_in_progress;
8258 	int			 rebase_in_progress, merge_in_progress;
8259 
8260 	/*
8261 	 * Silenty refuse to create merge reference if any histedit, merge,
8262 	 * or rebase operation is in progress.
8263 	 */
8264 	err = got_worktree_histedit_in_progress(&histedit_in_progress,
8265 	    worktree);
8266 	if (err)
8267 		return err;
8268 	if (histedit_in_progress)
8269 		return NULL;
8270 
8271 	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
8272 	if (err)
8273 		return err;
8274 	if (rebase_in_progress)
8275 		return NULL;
8276 
8277 	err = got_worktree_merge_in_progress(&merge_in_progress, worktree,
8278 	    repo);
8279 	if (err)
8280 		return err;
8281 	if (merge_in_progress)
8282 		return NULL;
8283 
8284 	err = got_object_id_str(&idstr, id);
8285 	if (err)
8286 		return err;
8287 
8288 	err = got_worktree_get_logmsg_ref_name(&refname, worktree, prefix);
8289 	if (err)
8290 		goto done;
8291 
8292 	if (asprintf(&ref, "%s-%s", refname, idstr) == -1) {
8293 		err = got_error_from_errno("asprintf");
8294 		goto done;
8295 	}
8296 
8297 	err = create_ref(ref, got_worktree_get_base_commit_id(worktree),
8298 	    -1, repo);
8299 done:
8300 	free(ref);
8301 	free(idstr);
8302 	free(refname);
8303 	return err;
8304 }
8305 
8306 __dead static void
8307 usage_cherrypick(void)
8308 {
8309 	fprintf(stderr, "usage: %s cherrypick [-lX] [commit-id]\n",
8310 	    getprogname());
8311 	exit(1);
8312 }
8313 
8314 static const struct got_error *
8315 cmd_cherrypick(int argc, char *argv[])
8316 {
8317 	const struct got_error *error = NULL;
8318 	struct got_worktree *worktree = NULL;
8319 	struct got_repository *repo = NULL;
8320 	char *cwd = NULL, *commit_id_str = NULL;
8321 	struct got_object_id *commit_id = NULL;
8322 	struct got_commit_object *commit = NULL;
8323 	struct got_object_qid *pid;
8324 	int ch, list_refs = 0, remove_refs = 0;
8325 	struct got_update_progress_arg upa;
8326 	int *pack_fds = NULL;
8327 
8328 #ifndef PROFILE
8329 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8330 	    "unveil", NULL) == -1)
8331 		err(1, "pledge");
8332 #endif
8333 
8334 	while ((ch = getopt(argc, argv, "lX")) != -1) {
8335 		switch (ch) {
8336 		case 'l':
8337 			list_refs = 1;
8338 			break;
8339 		case 'X':
8340 			remove_refs = 1;
8341 			break;
8342 		default:
8343 			usage_cherrypick();
8344 			/* NOTREACHED */
8345 		}
8346 	}
8347 
8348 	argc -= optind;
8349 	argv += optind;
8350 
8351 	if (list_refs || remove_refs) {
8352 		if (argc != 0 && argc != 1)
8353 			usage_cherrypick();
8354 	} else if (argc != 1)
8355 		usage_cherrypick();
8356 	if (list_refs && remove_refs)
8357 		option_conflict('l', 'X');
8358 
8359 	cwd = getcwd(NULL, 0);
8360 	if (cwd == NULL) {
8361 		error = got_error_from_errno("getcwd");
8362 		goto done;
8363 	}
8364 
8365 	error = got_repo_pack_fds_open(&pack_fds);
8366 	if (error != NULL)
8367 		goto done;
8368 
8369 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
8370 	if (error) {
8371 		if (list_refs || remove_refs) {
8372 			if (error->code != GOT_ERR_NOT_WORKTREE)
8373 				goto done;
8374 		} else {
8375 			if (error->code == GOT_ERR_NOT_WORKTREE)
8376 				error = wrap_not_worktree_error(error,
8377 				    "cherrypick", cwd);
8378 			goto done;
8379 		}
8380 	}
8381 
8382 	error = got_repo_open(&repo,
8383 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
8384 	    NULL, pack_fds);
8385 	if (error != NULL)
8386 		goto done;
8387 
8388 	error = apply_unveil(got_repo_get_path(repo), 0,
8389 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
8390 	if (error)
8391 		goto done;
8392 
8393 	if (list_refs || remove_refs) {
8394 		error = process_logmsg_refs(GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8395 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN,
8396 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
8397 		goto done;
8398 	}
8399 
8400 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
8401 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8402 	if (error)
8403 		goto done;
8404 	error = got_object_id_str(&commit_id_str, commit_id);
8405 	if (error)
8406 		goto done;
8407 
8408 	error = got_object_open_as_commit(&commit, repo, commit_id);
8409 	if (error)
8410 		goto done;
8411 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8412 	memset(&upa, 0, sizeof(upa));
8413 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
8414 	    commit_id, repo, update_progress, &upa, check_cancelled,
8415 	    NULL);
8416 	if (error != NULL)
8417 		goto done;
8418 
8419 	if (upa.did_something) {
8420 		error = logmsg_ref(commit_id,
8421 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX, worktree, repo);
8422 		if (error)
8423 			goto done;
8424 		printf("Merged commit %s\n", commit_id_str);
8425 	}
8426 	print_merge_progress_stats(&upa);
8427 done:
8428 	free(cwd);
8429 	if (commit)
8430 		got_object_commit_close(commit);
8431 	free(commit_id_str);
8432 	if (worktree)
8433 		got_worktree_close(worktree);
8434 	if (repo) {
8435 		const struct got_error *close_err = got_repo_close(repo);
8436 		if (error == NULL)
8437 			error = close_err;
8438 	}
8439 	if (pack_fds) {
8440 		const struct got_error *pack_err =
8441 		    got_repo_pack_fds_close(pack_fds);
8442 		if (error == NULL)
8443 			error = pack_err;
8444 	}
8445 
8446 	return error;
8447 }
8448 
8449 __dead static void
8450 usage_backout(void)
8451 {
8452 	fprintf(stderr, "usage: %s backout [-lX] [commit-id]\n", getprogname());
8453 	exit(1);
8454 }
8455 
8456 static const struct got_error *
8457 cmd_backout(int argc, char *argv[])
8458 {
8459 	const struct got_error *error = NULL;
8460 	struct got_worktree *worktree = NULL;
8461 	struct got_repository *repo = NULL;
8462 	char *cwd = NULL, *commit_id_str = NULL;
8463 	struct got_object_id *commit_id = NULL;
8464 	struct got_commit_object *commit = NULL;
8465 	struct got_object_qid *pid;
8466 	int ch, list_refs = 0, remove_refs = 0;
8467 	struct got_update_progress_arg upa;
8468 	int *pack_fds = NULL;
8469 
8470 #ifndef PROFILE
8471 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8472 	    "unveil", NULL) == -1)
8473 		err(1, "pledge");
8474 #endif
8475 
8476 	while ((ch = getopt(argc, argv, "lX")) != -1) {
8477 		switch (ch) {
8478 		case 'l':
8479 			list_refs = 1;
8480 			break;
8481 		case 'X':
8482 			remove_refs = 1;
8483 			break;
8484 		default:
8485 			usage_backout();
8486 			/* NOTREACHED */
8487 		}
8488 	}
8489 
8490 	argc -= optind;
8491 	argv += optind;
8492 
8493 	if (list_refs || remove_refs) {
8494 		if (argc != 0 && argc != 1)
8495 			usage_backout();
8496 	} else if (argc != 1)
8497 		usage_backout();
8498 	if (list_refs && remove_refs)
8499 		option_conflict('l', 'X');
8500 
8501 	cwd = getcwd(NULL, 0);
8502 	if (cwd == NULL) {
8503 		error = got_error_from_errno("getcwd");
8504 		goto done;
8505 	}
8506 
8507 	error = got_repo_pack_fds_open(&pack_fds);
8508 	if (error != NULL)
8509 		goto done;
8510 
8511 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
8512 	if (error) {
8513 		if (list_refs || remove_refs) {
8514 			if (error->code != GOT_ERR_NOT_WORKTREE)
8515 				goto done;
8516 		} else {
8517 			if (error->code == GOT_ERR_NOT_WORKTREE)
8518 				error = wrap_not_worktree_error(error,
8519 				    "backout", cwd);
8520 			goto done;
8521 		}
8522 	}
8523 
8524 	error = got_repo_open(&repo,
8525 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
8526 	    NULL, pack_fds);
8527 	if (error != NULL)
8528 		goto done;
8529 
8530 	error = apply_unveil(got_repo_get_path(repo), 0,
8531 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
8532 	if (error)
8533 		goto done;
8534 
8535 	if (list_refs || remove_refs) {
8536 		error = process_logmsg_refs(GOT_WORKTREE_BACKOUT_REF_PREFIX,
8537 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN,
8538 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
8539 		goto done;
8540 	}
8541 
8542 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
8543 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8544 	if (error)
8545 		goto done;
8546 	error = got_object_id_str(&commit_id_str, commit_id);
8547 	if (error)
8548 		goto done;
8549 
8550 	error = got_object_open_as_commit(&commit, repo, commit_id);
8551 	if (error)
8552 		goto done;
8553 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8554 	if (pid == NULL) {
8555 		error = got_error(GOT_ERR_ROOT_COMMIT);
8556 		goto done;
8557 	}
8558 
8559 	memset(&upa, 0, sizeof(upa));
8560 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
8561 	    repo, update_progress, &upa, check_cancelled, NULL);
8562 	if (error != NULL)
8563 		goto done;
8564 
8565 	if (upa.did_something) {
8566 		error = logmsg_ref(commit_id, GOT_WORKTREE_BACKOUT_REF_PREFIX,
8567 		    worktree, repo);
8568 		if (error)
8569 			goto done;
8570 		printf("Backed out commit %s\n", commit_id_str);
8571 	}
8572 	print_merge_progress_stats(&upa);
8573 done:
8574 	free(cwd);
8575 	if (commit)
8576 		got_object_commit_close(commit);
8577 	free(commit_id_str);
8578 	if (worktree)
8579 		got_worktree_close(worktree);
8580 	if (repo) {
8581 		const struct got_error *close_err = got_repo_close(repo);
8582 		if (error == NULL)
8583 			error = close_err;
8584 	}
8585 	if (pack_fds) {
8586 		const struct got_error *pack_err =
8587 		    got_repo_pack_fds_close(pack_fds);
8588 		if (error == NULL)
8589 			error = pack_err;
8590 	}
8591 	return error;
8592 }
8593 
8594 __dead static void
8595 usage_cat(void)
8596 {
8597 	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
8598 	    "arg ...\n", getprogname());
8599 	exit(1);
8600 }
8601 
8602 static const struct got_error *
8603 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
8604 {
8605 	const struct got_error *err;
8606 	struct got_blob_object *blob;
8607 	int fd = -1;
8608 
8609 	fd = got_opentempfd();
8610 	if (fd == -1)
8611 		return got_error_from_errno("got_opentempfd");
8612 
8613 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
8614 	if (err)
8615 		goto done;
8616 
8617 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
8618 done:
8619 	if (fd != -1 && close(fd) == -1 && err == NULL)
8620 		err = got_error_from_errno("close");
8621 	if (blob)
8622 		got_object_blob_close(blob);
8623 	return err;
8624 }
8625 
8626 static const struct got_error *
8627 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
8628 {
8629 	const struct got_error *err;
8630 	struct got_tree_object *tree;
8631 	int nentries, i;
8632 
8633 	err = got_object_open_as_tree(&tree, repo, id);
8634 	if (err)
8635 		return err;
8636 
8637 	nentries = got_object_tree_get_nentries(tree);
8638 	for (i = 0; i < nentries; i++) {
8639 		struct got_tree_entry *te;
8640 		char *id_str;
8641 		if (sigint_received || sigpipe_received)
8642 			break;
8643 		te = got_object_tree_get_entry(tree, i);
8644 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
8645 		if (err)
8646 			break;
8647 		fprintf(outfile, "%s %.7o %s\n", id_str,
8648 		    got_tree_entry_get_mode(te),
8649 		    got_tree_entry_get_name(te));
8650 		free(id_str);
8651 	}
8652 
8653 	got_object_tree_close(tree);
8654 	return err;
8655 }
8656 
8657 static const struct got_error *
8658 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
8659 {
8660 	const struct got_error *err;
8661 	struct got_commit_object *commit;
8662 	const struct got_object_id_queue *parent_ids;
8663 	struct got_object_qid *pid;
8664 	char *id_str = NULL;
8665 	const char *logmsg = NULL;
8666 	char gmtoff[6];
8667 
8668 	err = got_object_open_as_commit(&commit, repo, id);
8669 	if (err)
8670 		return err;
8671 
8672 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
8673 	if (err)
8674 		goto done;
8675 
8676 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
8677 	parent_ids = got_object_commit_get_parent_ids(commit);
8678 	fprintf(outfile, "numparents %d\n",
8679 	    got_object_commit_get_nparents(commit));
8680 	STAILQ_FOREACH(pid, parent_ids, entry) {
8681 		char *pid_str;
8682 		err = got_object_id_str(&pid_str, &pid->id);
8683 		if (err)
8684 			goto done;
8685 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
8686 		free(pid_str);
8687 	}
8688 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
8689 	    got_object_commit_get_author_gmtoff(commit));
8690 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
8691 	    got_object_commit_get_author(commit),
8692 	    (long long)got_object_commit_get_author_time(commit),
8693 	    gmtoff);
8694 
8695 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
8696 	    got_object_commit_get_committer_gmtoff(commit));
8697 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
8698 	    got_object_commit_get_committer(commit),
8699 	    (long long)got_object_commit_get_committer_time(commit),
8700 	    gmtoff);
8701 
8702 	logmsg = got_object_commit_get_logmsg_raw(commit);
8703 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
8704 	fprintf(outfile, "%s", logmsg);
8705 done:
8706 	free(id_str);
8707 	got_object_commit_close(commit);
8708 	return err;
8709 }
8710 
8711 static const struct got_error *
8712 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
8713 {
8714 	const struct got_error *err;
8715 	struct got_tag_object *tag;
8716 	char *id_str = NULL;
8717 	const char *tagmsg = NULL;
8718 	char gmtoff[6];
8719 
8720 	err = got_object_open_as_tag(&tag, repo, id);
8721 	if (err)
8722 		return err;
8723 
8724 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
8725 	if (err)
8726 		goto done;
8727 
8728 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
8729 
8730 	switch (got_object_tag_get_object_type(tag)) {
8731 	case GOT_OBJ_TYPE_BLOB:
8732 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
8733 		    GOT_OBJ_LABEL_BLOB);
8734 		break;
8735 	case GOT_OBJ_TYPE_TREE:
8736 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
8737 		    GOT_OBJ_LABEL_TREE);
8738 		break;
8739 	case GOT_OBJ_TYPE_COMMIT:
8740 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
8741 		    GOT_OBJ_LABEL_COMMIT);
8742 		break;
8743 	case GOT_OBJ_TYPE_TAG:
8744 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
8745 		    GOT_OBJ_LABEL_TAG);
8746 		break;
8747 	default:
8748 		break;
8749 	}
8750 
8751 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
8752 	    got_object_tag_get_name(tag));
8753 
8754 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
8755 	    got_object_tag_get_tagger_gmtoff(tag));
8756 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
8757 	    got_object_tag_get_tagger(tag),
8758 	    (long long)got_object_tag_get_tagger_time(tag),
8759 	    gmtoff);
8760 
8761 	tagmsg = got_object_tag_get_message(tag);
8762 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
8763 	fprintf(outfile, "%s", tagmsg);
8764 done:
8765 	free(id_str);
8766 	got_object_tag_close(tag);
8767 	return err;
8768 }
8769 
8770 static const struct got_error *
8771 cmd_cat(int argc, char *argv[])
8772 {
8773 	const struct got_error *error;
8774 	struct got_repository *repo = NULL;
8775 	struct got_worktree *worktree = NULL;
8776 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
8777 	const char *commit_id_str = NULL;
8778 	struct got_object_id *id = NULL, *commit_id = NULL;
8779 	struct got_commit_object *commit = NULL;
8780 	int ch, obj_type, i, force_path = 0;
8781 	struct got_reflist_head refs;
8782 	int *pack_fds = NULL;
8783 
8784 	TAILQ_INIT(&refs);
8785 
8786 #ifndef PROFILE
8787 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
8788 	    NULL) == -1)
8789 		err(1, "pledge");
8790 #endif
8791 
8792 	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
8793 		switch (ch) {
8794 		case 'c':
8795 			commit_id_str = optarg;
8796 			break;
8797 		case 'P':
8798 			force_path = 1;
8799 			break;
8800 		case 'r':
8801 			repo_path = realpath(optarg, NULL);
8802 			if (repo_path == NULL)
8803 				return got_error_from_errno2("realpath",
8804 				    optarg);
8805 			got_path_strip_trailing_slashes(repo_path);
8806 			break;
8807 		default:
8808 			usage_cat();
8809 			/* NOTREACHED */
8810 		}
8811 	}
8812 
8813 	argc -= optind;
8814 	argv += optind;
8815 
8816 	cwd = getcwd(NULL, 0);
8817 	if (cwd == NULL) {
8818 		error = got_error_from_errno("getcwd");
8819 		goto done;
8820 	}
8821 
8822 	error = got_repo_pack_fds_open(&pack_fds);
8823 	if (error != NULL)
8824 		goto done;
8825 
8826 	if (repo_path == NULL) {
8827 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
8828 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
8829 			goto done;
8830 		if (worktree) {
8831 			repo_path = strdup(
8832 			    got_worktree_get_repo_path(worktree));
8833 			if (repo_path == NULL) {
8834 				error = got_error_from_errno("strdup");
8835 				goto done;
8836 			}
8837 
8838 			/* Release work tree lock. */
8839 			got_worktree_close(worktree);
8840 			worktree = NULL;
8841 		}
8842 	}
8843 
8844 	if (repo_path == NULL) {
8845 		repo_path = strdup(cwd);
8846 		if (repo_path == NULL)
8847 			return got_error_from_errno("strdup");
8848 	}
8849 
8850 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8851 	free(repo_path);
8852 	if (error != NULL)
8853 		goto done;
8854 
8855 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
8856 	if (error)
8857 		goto done;
8858 
8859 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8860 	if (error)
8861 		goto done;
8862 
8863 	if (commit_id_str == NULL)
8864 		commit_id_str = GOT_REF_HEAD;
8865 	error = got_repo_match_object_id(&commit_id, NULL,
8866 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
8867 	if (error)
8868 		goto done;
8869 
8870 	error = got_object_open_as_commit(&commit, repo, commit_id);
8871 	if (error)
8872 		goto done;
8873 
8874 	for (i = 0; i < argc; i++) {
8875 		if (force_path) {
8876 			error = got_object_id_by_path(&id, repo, commit,
8877 			    argv[i]);
8878 			if (error)
8879 				break;
8880 		} else {
8881 			error = got_repo_match_object_id(&id, &label, argv[i],
8882 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
8883 			    repo);
8884 			if (error) {
8885 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
8886 				    error->code != GOT_ERR_NOT_REF)
8887 					break;
8888 				error = got_object_id_by_path(&id, repo,
8889 				    commit, argv[i]);
8890 				if (error)
8891 					break;
8892 			}
8893 		}
8894 
8895 		error = got_object_get_type(&obj_type, repo, id);
8896 		if (error)
8897 			break;
8898 
8899 		switch (obj_type) {
8900 		case GOT_OBJ_TYPE_BLOB:
8901 			error = cat_blob(id, repo, stdout);
8902 			break;
8903 		case GOT_OBJ_TYPE_TREE:
8904 			error = cat_tree(id, repo, stdout);
8905 			break;
8906 		case GOT_OBJ_TYPE_COMMIT:
8907 			error = cat_commit(id, repo, stdout);
8908 			break;
8909 		case GOT_OBJ_TYPE_TAG:
8910 			error = cat_tag(id, repo, stdout);
8911 			break;
8912 		default:
8913 			error = got_error(GOT_ERR_OBJ_TYPE);
8914 			break;
8915 		}
8916 		if (error)
8917 			break;
8918 		free(label);
8919 		label = NULL;
8920 		free(id);
8921 		id = NULL;
8922 	}
8923 done:
8924 	free(label);
8925 	free(id);
8926 	free(commit_id);
8927 	if (commit)
8928 		got_object_commit_close(commit);
8929 	if (worktree)
8930 		got_worktree_close(worktree);
8931 	if (repo) {
8932 		const struct got_error *close_err = got_repo_close(repo);
8933 		if (error == NULL)
8934 			error = close_err;
8935 	}
8936 	if (pack_fds) {
8937 		const struct got_error *pack_err =
8938 		    got_repo_pack_fds_close(pack_fds);
8939 		if (error == NULL)
8940 			error = pack_err;
8941 	}
8942 
8943 	got_ref_list_free(&refs);
8944 	return error;
8945 }
8946 
8947 __dead static void
8948 usage_info(void)
8949 {
8950 	fprintf(stderr, "usage: %s info [path ...]\n",
8951 	    getprogname());
8952 	exit(1);
8953 }
8954 
8955 static const struct got_error *
8956 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
8957     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
8958     struct got_object_id *commit_id)
8959 {
8960 	const struct got_error *err = NULL;
8961 	char *id_str = NULL;
8962 	char datebuf[128];
8963 	struct tm mytm, *tm;
8964 	struct got_pathlist_head *paths = arg;
8965 	struct got_pathlist_entry *pe;
8966 
8967 	/*
8968 	 * Clear error indication from any of the path arguments which
8969 	 * would cause this file index entry to be displayed.
8970 	 */
8971 	TAILQ_FOREACH(pe, paths, entry) {
8972 		if (got_path_cmp(path, pe->path, strlen(path),
8973 		    pe->path_len) == 0 ||
8974 		    got_path_is_child(path, pe->path, pe->path_len))
8975 			pe->data = NULL; /* no error */
8976 	}
8977 
8978 	printf(GOT_COMMIT_SEP_STR);
8979 	if (S_ISLNK(mode))
8980 		printf("symlink: %s\n", path);
8981 	else if (S_ISREG(mode)) {
8982 		printf("file: %s\n", path);
8983 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
8984 	} else if (S_ISDIR(mode))
8985 		printf("directory: %s\n", path);
8986 	else
8987 		printf("something: %s\n", path);
8988 
8989 	tm = localtime_r(&mtime, &mytm);
8990 	if (tm == NULL)
8991 		return NULL;
8992 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
8993 		return got_error(GOT_ERR_NO_SPACE);
8994 	printf("timestamp: %s\n", datebuf);
8995 
8996 	if (blob_id) {
8997 		err = got_object_id_str(&id_str, blob_id);
8998 		if (err)
8999 			return err;
9000 		printf("based on blob: %s\n", id_str);
9001 		free(id_str);
9002 	}
9003 
9004 	if (staged_blob_id) {
9005 		err = got_object_id_str(&id_str, staged_blob_id);
9006 		if (err)
9007 			return err;
9008 		printf("based on staged blob: %s\n", id_str);
9009 		free(id_str);
9010 	}
9011 
9012 	if (commit_id) {
9013 		err = got_object_id_str(&id_str, commit_id);
9014 		if (err)
9015 			return err;
9016 		printf("based on commit: %s\n", id_str);
9017 		free(id_str);
9018 	}
9019 
9020 	return NULL;
9021 }
9022 
9023 static const struct got_error *
9024 cmd_info(int argc, char *argv[])
9025 {
9026 	const struct got_error *error = NULL;
9027 	struct got_worktree *worktree = NULL;
9028 	char *cwd = NULL, *id_str = NULL;
9029 	struct got_pathlist_head paths;
9030 	char *uuidstr = NULL;
9031 	int ch, show_files = 0;
9032 
9033 	TAILQ_INIT(&paths);
9034 
9035 #ifndef PROFILE
9036 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
9037 	    NULL) == -1)
9038 		err(1, "pledge");
9039 #endif
9040 
9041 	while ((ch = getopt(argc, argv, "")) != -1) {
9042 		switch (ch) {
9043 		default:
9044 			usage_info();
9045 			/* NOTREACHED */
9046 		}
9047 	}
9048 
9049 	argc -= optind;
9050 	argv += optind;
9051 
9052 	cwd = getcwd(NULL, 0);
9053 	if (cwd == NULL) {
9054 		error = got_error_from_errno("getcwd");
9055 		goto done;
9056 	}
9057 
9058 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
9059 	if (error) {
9060 		if (error->code == GOT_ERR_NOT_WORKTREE)
9061 			error = wrap_not_worktree_error(error, "info", cwd);
9062 		goto done;
9063 	}
9064 
9065 #ifndef PROFILE
9066 	/* Remove "wpath cpath proc exec sendfd" promises. */
9067 	if (pledge("stdio rpath flock unveil", NULL) == -1)
9068 		err(1, "pledge");
9069 #endif
9070 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
9071 	if (error)
9072 		goto done;
9073 
9074 	if (argc >= 1) {
9075 		error = get_worktree_paths_from_argv(&paths, argc, argv,
9076 		    worktree);
9077 		if (error)
9078 			goto done;
9079 		show_files = 1;
9080 	}
9081 
9082 	error = got_object_id_str(&id_str,
9083 	    got_worktree_get_base_commit_id(worktree));
9084 	if (error)
9085 		goto done;
9086 
9087 	error = got_worktree_get_uuid(&uuidstr, worktree);
9088 	if (error)
9089 		goto done;
9090 
9091 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
9092 	printf("work tree base commit: %s\n", id_str);
9093 	printf("work tree path prefix: %s\n",
9094 	    got_worktree_get_path_prefix(worktree));
9095 	printf("work tree branch reference: %s\n",
9096 	    got_worktree_get_head_ref_name(worktree));
9097 	printf("work tree UUID: %s\n", uuidstr);
9098 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
9099 
9100 	if (show_files) {
9101 		struct got_pathlist_entry *pe;
9102 		TAILQ_FOREACH(pe, &paths, entry) {
9103 			if (pe->path_len == 0)
9104 				continue;
9105 			/*
9106 			 * Assume this path will fail. This will be corrected
9107 			 * in print_path_info() in case the path does suceeed.
9108 			 */
9109 			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
9110 		}
9111 		error = got_worktree_path_info(worktree, &paths,
9112 		    print_path_info, &paths, check_cancelled, NULL);
9113 		if (error)
9114 			goto done;
9115 		TAILQ_FOREACH(pe, &paths, entry) {
9116 			if (pe->data != NULL) {
9117 				const struct got_error *perr;
9118 
9119 				perr = pe->data;
9120 				error = got_error_fmt(perr->code, "%s",
9121 				    pe->path);
9122 				break;
9123 			}
9124 		}
9125 	}
9126 done:
9127 	if (worktree)
9128 		got_worktree_close(worktree);
9129 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
9130 	free(cwd);
9131 	free(id_str);
9132 	free(uuidstr);
9133 	return error;
9134 }