1 /*
2  * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
3  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4  * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/types.h>
20 #include <sys/stat.h>
21 #include <sys/wait.h>
22 
23 #include <err.h>
24 #include <errno.h>
25 #include <fcntl.h>
26 #include <limits.h>
27 #include <locale.h>
28 #include <ctype.h>
29 #include <signal.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <unistd.h>
34 #include <libgen.h>
35 #include <time.h>
36 #include <paths.h>
37 #include <regex.h>
38 #include <getopt.h>
39 
40 #include "got_compat.h"
41 
42 #include "got_version.h"
43 #include "got_error.h"
44 #include "got_object.h"
45 #include "got_reference.h"
46 #include "got_repository.h"
47 #include "got_path.h"
48 #include "got_cancel.h"
49 #include "got_worktree.h"
50 #include "got_diff.h"
51 #include "got_commit_graph.h"
52 #include "got_fetch.h"
53 #include "got_send.h"
54 #include "got_blame.h"
55 #include "got_privsep.h"
56 #include "got_opentemp.h"
57 #include "got_gotconfig.h"
58 #include "got_dial.h"
59 #include "got_patch.h"
60 #include "got_sigs.h"
61 #include "got_date.h"
62 
63 #ifndef nitems
64 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
65 #endif
66 
67 static volatile sig_atomic_t sigint_received;
68 static volatile sig_atomic_t sigpipe_received;
69 
70 static void
71 catch_sigint(int signo)
72 {
73 	sigint_received = 1;
74 }
75 
76 static void
77 catch_sigpipe(int signo)
78 {
79 	sigpipe_received = 1;
80 }
81 
82 
83 struct got_cmd {
84 	const char	*cmd_name;
85 	const struct got_error *(*cmd_main)(int, char *[]);
86 	void		(*cmd_usage)(void);
87 	const char	*cmd_alias;
88 };
89 
90 __dead static void	usage(int, int);
91 __dead static void	usage_init(void);
92 __dead static void	usage_import(void);
93 __dead static void	usage_clone(void);
94 __dead static void	usage_fetch(void);
95 __dead static void	usage_checkout(void);
96 __dead static void	usage_update(void);
97 __dead static void	usage_log(void);
98 __dead static void	usage_diff(void);
99 __dead static void	usage_blame(void);
100 __dead static void	usage_tree(void);
101 __dead static void	usage_status(void);
102 __dead static void	usage_ref(void);
103 __dead static void	usage_branch(void);
104 __dead static void	usage_tag(void);
105 __dead static void	usage_add(void);
106 __dead static void	usage_remove(void);
107 __dead static void	usage_patch(void);
108 __dead static void	usage_revert(void);
109 __dead static void	usage_commit(void);
110 __dead static void	usage_send(void);
111 __dead static void	usage_cherrypick(void);
112 __dead static void	usage_backout(void);
113 __dead static void	usage_rebase(void);
114 __dead static void	usage_histedit(void);
115 __dead static void	usage_integrate(void);
116 __dead static void	usage_merge(void);
117 __dead static void	usage_stage(void);
118 __dead static void	usage_unstage(void);
119 __dead static void	usage_cat(void);
120 __dead static void	usage_info(void);
121 
122 static const struct got_error*		cmd_init(int, char *[]);
123 static const struct got_error*		cmd_import(int, char *[]);
124 static const struct got_error*		cmd_clone(int, char *[]);
125 static const struct got_error*		cmd_fetch(int, char *[]);
126 static const struct got_error*		cmd_checkout(int, char *[]);
127 static const struct got_error*		cmd_update(int, char *[]);
128 static const struct got_error*		cmd_log(int, char *[]);
129 static const struct got_error*		cmd_diff(int, char *[]);
130 static const struct got_error*		cmd_blame(int, char *[]);
131 static const struct got_error*		cmd_tree(int, char *[]);
132 static const struct got_error*		cmd_status(int, char *[]);
133 static const struct got_error*		cmd_ref(int, char *[]);
134 static const struct got_error*		cmd_branch(int, char *[]);
135 static const struct got_error*		cmd_tag(int, char *[]);
136 static const struct got_error*		cmd_add(int, char *[]);
137 static const struct got_error*		cmd_remove(int, char *[]);
138 static const struct got_error*		cmd_patch(int, char *[]);
139 static const struct got_error*		cmd_revert(int, char *[]);
140 static const struct got_error*		cmd_commit(int, char *[]);
141 static const struct got_error*		cmd_send(int, char *[]);
142 static const struct got_error*		cmd_cherrypick(int, char *[]);
143 static const struct got_error*		cmd_backout(int, char *[]);
144 static const struct got_error*		cmd_rebase(int, char *[]);
145 static const struct got_error*		cmd_histedit(int, char *[]);
146 static const struct got_error*		cmd_integrate(int, char *[]);
147 static const struct got_error*		cmd_merge(int, char *[]);
148 static const struct got_error*		cmd_stage(int, char *[]);
149 static const struct got_error*		cmd_unstage(int, char *[]);
150 static const struct got_error*		cmd_cat(int, char *[]);
151 static const struct got_error*		cmd_info(int, char *[]);
152 
153 static const struct got_cmd got_commands[] = {
154 	{ "init",	cmd_init,	usage_init,	"" },
155 	{ "import",	cmd_import,	usage_import,	"im" },
156 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
157 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
158 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
159 	{ "update",	cmd_update,	usage_update,	"up" },
160 	{ "log",	cmd_log,	usage_log,	"" },
161 	{ "diff",	cmd_diff,	usage_diff,	"di" },
162 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
163 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
164 	{ "status",	cmd_status,	usage_status,	"st" },
165 	{ "ref",	cmd_ref,	usage_ref,	"" },
166 	{ "branch",	cmd_branch,	usage_branch,	"br" },
167 	{ "tag",	cmd_tag,	usage_tag,	"" },
168 	{ "add",	cmd_add,	usage_add,	"" },
169 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
170 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
171 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
172 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
173 	{ "send",	cmd_send,	usage_send,	"se" },
174 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
175 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
176 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
177 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
178 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
179 	{ "merge",	cmd_merge,	usage_merge,	"mg" },
180 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
181 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
182 	{ "cat",	cmd_cat,	usage_cat,	"" },
183 	{ "info",	cmd_info,	usage_info,	"" },
184 };
185 
186 static void
187 list_commands(FILE *fp)
188 {
189 	size_t i;
190 
191 	fprintf(fp, "commands:");
192 	for (i = 0; i < nitems(got_commands); i++) {
193 		const struct got_cmd *cmd = &got_commands[i];
194 		fprintf(fp, " %s", cmd->cmd_name);
195 	}
196 	fputc('\n', fp);
197 }
198 
199 __dead static void
200 option_conflict(char a, char b)
201 {
202 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
203 }
204 
205 int
206 main(int argc, char *argv[])
207 {
208 	const struct got_cmd *cmd;
209 	size_t i;
210 	int ch;
211 	int hflag = 0, Vflag = 0;
212 	static const struct option longopts[] = {
213 	    { "version", no_argument, NULL, 'V' },
214 	    { NULL, 0, NULL, 0 }
215 	};
216 
217 	setlocale(LC_CTYPE, "");
218 
219 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
220 		switch (ch) {
221 		case 'h':
222 			hflag = 1;
223 			break;
224 		case 'V':
225 			Vflag = 1;
226 			break;
227 		default:
228 			usage(hflag, 1);
229 			/* NOTREACHED */
230 		}
231 	}
232 
233 	argc -= optind;
234 	argv += optind;
235 	optind = 1;
236 	optreset = 1;
237 
238 	if (Vflag) {
239 		got_version_print_str();
240 		return 0;
241 	}
242 
243 	if (argc <= 0)
244 		usage(hflag, hflag ? 0 : 1);
245 
246 	signal(SIGINT, catch_sigint);
247 	signal(SIGPIPE, catch_sigpipe);
248 
249 	for (i = 0; i < nitems(got_commands); i++) {
250 		const struct got_error *error;
251 
252 		cmd = &got_commands[i];
253 
254 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
255 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
256 			continue;
257 
258 		if (hflag)
259 			cmd->cmd_usage();
260 
261 		error = cmd->cmd_main(argc, argv);
262 		if (error && error->code != GOT_ERR_CANCELLED &&
263 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
264 		    !(sigpipe_received &&
265 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
266 		    !(sigint_received &&
267 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
268 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
269 			return 1;
270 		}
271 
272 		return 0;
273 	}
274 
275 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
276 	list_commands(stderr);
277 	return 1;
278 }
279 
280 __dead static void
281 usage(int hflag, int status)
282 {
283 	FILE *fp = (status == 0) ? stdout : stderr;
284 
285 	fprintf(fp, "usage: %s [-h] [-V | --version] command [arg ...]\n",
286 	    getprogname());
287 	if (hflag)
288 		list_commands(fp);
289 	exit(status);
290 }
291 
292 static const struct got_error *
293 get_editor(char **abspath)
294 {
295 	const struct got_error *err = NULL;
296 	const char *editor;
297 
298 	*abspath = NULL;
299 
300 	editor = getenv("VISUAL");
301 	if (editor == NULL)
302 		editor = getenv("EDITOR");
303 
304 	if (editor) {
305 		err = got_path_find_prog(abspath, editor);
306 		if (err)
307 			return err;
308 	}
309 
310 	if (*abspath == NULL) {
311 		*abspath = strdup("/bin/ed");
312 		if (*abspath == NULL)
313 			return got_error_from_errno("strdup");
314 	}
315 
316 	return NULL;
317 }
318 
319 static const struct got_error *
320 apply_unveil(const char *repo_path, int repo_read_only,
321     const char *worktree_path)
322 {
323 	const struct got_error *err;
324 
325 #ifdef PROFILE
326 	if (unveil("gmon.out", "rwc") != 0)
327 		return got_error_from_errno2("unveil", "gmon.out");
328 #endif
329 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
330 		return got_error_from_errno2("unveil", repo_path);
331 
332 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
333 		return got_error_from_errno2("unveil", worktree_path);
334 
335 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
336 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
337 
338 	err = got_privsep_unveil_exec_helpers();
339 	if (err != NULL)
340 		return err;
341 
342 	if (unveil(NULL, NULL) != 0)
343 		return got_error_from_errno("unveil");
344 
345 	return NULL;
346 }
347 
348 __dead static void
349 usage_init(void)
350 {
351 	fprintf(stderr, "usage: %s init repository-path\n", getprogname());
352 	exit(1);
353 }
354 
355 static const struct got_error *
356 cmd_init(int argc, char *argv[])
357 {
358 	const struct got_error *error = NULL;
359 	char *repo_path = NULL;
360 	int ch;
361 
362 	while ((ch = getopt(argc, argv, "")) != -1) {
363 		switch (ch) {
364 		default:
365 			usage_init();
366 			/* NOTREACHED */
367 		}
368 	}
369 
370 	argc -= optind;
371 	argv += optind;
372 
373 #ifndef PROFILE
374 	if (pledge("stdio rpath wpath cpath unveil", NULL) == -1)
375 		err(1, "pledge");
376 #endif
377 	if (argc != 1)
378 		usage_init();
379 
380 	repo_path = strdup(argv[0]);
381 	if (repo_path == NULL)
382 		return got_error_from_errno("strdup");
383 
384 	got_path_strip_trailing_slashes(repo_path);
385 
386 	error = got_path_mkdir(repo_path);
387 	if (error &&
388 	    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
389 		goto done;
390 
391 	error = apply_unveil(repo_path, 0, NULL);
392 	if (error)
393 		goto done;
394 
395 	error = got_repo_init(repo_path);
396 done:
397 	free(repo_path);
398 	return error;
399 }
400 
401 __dead static void
402 usage_import(void)
403 {
404 	fprintf(stderr, "usage: %s import [-b branch] [-m message] "
405 	    "[-r repository-path] [-I pattern] path\n", getprogname());
406 	exit(1);
407 }
408 
409 static int
410 spawn_editor(const char *editor, const char *file)
411 {
412 	pid_t pid;
413 	sig_t sighup, sigint, sigquit;
414 	int st = -1;
415 
416 	sighup = signal(SIGHUP, SIG_IGN);
417 	sigint = signal(SIGINT, SIG_IGN);
418 	sigquit = signal(SIGQUIT, SIG_IGN);
419 
420 	switch (pid = fork()) {
421 	case -1:
422 		goto doneediting;
423 	case 0:
424 		execl(editor, editor, file, (char *)NULL);
425 		_exit(127);
426 	}
427 
428 	while (waitpid(pid, &st, 0) == -1)
429 		if (errno != EINTR)
430 			break;
431 
432 doneediting:
433 	(void)signal(SIGHUP, sighup);
434 	(void)signal(SIGINT, sigint);
435 	(void)signal(SIGQUIT, sigquit);
436 
437 	if (!WIFEXITED(st)) {
438 		errno = EINTR;
439 		return -1;
440 	}
441 
442 	return WEXITSTATUS(st);
443 }
444 
445 static const struct got_error *
446 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
447     const char *initial_content, size_t initial_content_len,
448     int require_modification)
449 {
450 	const struct got_error *err = NULL;
451 	char *line = NULL;
452 	size_t linesize = 0;
453 	ssize_t linelen;
454 	struct stat st, st2;
455 	FILE *fp = NULL;
456 	size_t len, logmsg_len;
457 	char *initial_content_stripped = NULL, *buf = NULL, *s;
458 
459 	*logmsg = NULL;
460 
461 	if (stat(logmsg_path, &st) == -1)
462 		return got_error_from_errno2("stat", logmsg_path);
463 
464 	if (spawn_editor(editor, logmsg_path) == -1)
465 		return got_error_from_errno("failed spawning editor");
466 
467 	if (stat(logmsg_path, &st2) == -1)
468 		return got_error_from_errno("stat");
469 
470 	if (require_modification &&
471 	    st.st_mtime == st2.st_mtime && st.st_size == st2.st_size)
472 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
473 		    "no changes made to commit message, aborting");
474 
475 	/*
476 	 * Set up a stripped version of the initial content without comments
477 	 * and blank lines. We need this in order to check if the message
478 	 * has in fact been edited.
479 	 */
480 	initial_content_stripped = malloc(initial_content_len + 1);
481 	if (initial_content_stripped == NULL)
482 		return got_error_from_errno("malloc");
483 	initial_content_stripped[0] = '\0';
484 
485 	buf = strdup(initial_content);
486 	if (buf == NULL) {
487 		err = got_error_from_errno("strdup");
488 		goto done;
489 	}
490 	s = buf;
491 	len = 0;
492 	while ((line = strsep(&s, "\n")) != NULL) {
493 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
494 			continue; /* remove comments and leading empty lines */
495 		len = strlcat(initial_content_stripped, line,
496 		    initial_content_len + 1);
497 		if (len >= initial_content_len + 1) {
498 			err = got_error(GOT_ERR_NO_SPACE);
499 			goto done;
500 		}
501 	}
502 	while (len > 0 && initial_content_stripped[len - 1] == '\n') {
503 		initial_content_stripped[len - 1] = '\0';
504 		len--;
505 	}
506 
507 	logmsg_len = st2.st_size;
508 	*logmsg = malloc(logmsg_len + 1);
509 	if (*logmsg == NULL)
510 		return got_error_from_errno("malloc");
511 	(*logmsg)[0] = '\0';
512 
513 	fp = fopen(logmsg_path, "re");
514 	if (fp == NULL) {
515 		err = got_error_from_errno("fopen");
516 		goto done;
517 	}
518 
519 	len = 0;
520 	while ((linelen = getline(&line, &linesize, fp)) != -1) {
521 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
522 			continue; /* remove comments and leading empty lines */
523 		len = strlcat(*logmsg, line, logmsg_len + 1);
524 		if (len >= logmsg_len + 1) {
525 			err = got_error(GOT_ERR_NO_SPACE);
526 			goto done;
527 		}
528 	}
529 	free(line);
530 	if (ferror(fp)) {
531 		err = got_ferror(fp, GOT_ERR_IO);
532 		goto done;
533 	}
534 	while (len > 0 && (*logmsg)[len - 1] == '\n') {
535 		(*logmsg)[len - 1] = '\0';
536 		len--;
537 	}
538 
539 	if (len == 0) {
540 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
541 		    "commit message cannot be empty, aborting");
542 		goto done;
543 	}
544 	if (require_modification &&
545 	    strcmp(*logmsg, initial_content_stripped) == 0)
546 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
547 		    "no changes made to commit message, aborting");
548 done:
549 	free(initial_content_stripped);
550 	free(buf);
551 	if (fp && fclose(fp) == EOF && err == NULL)
552 		err = got_error_from_errno("fclose");
553 	if (err) {
554 		free(*logmsg);
555 		*logmsg = NULL;
556 	}
557 	return err;
558 }
559 
560 static const struct got_error *
561 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
562     const char *path_dir, const char *branch_name)
563 {
564 	char *initial_content = NULL;
565 	const struct got_error *err = NULL;
566 	int initial_content_len;
567 	int fd = -1;
568 
569 	initial_content_len = asprintf(&initial_content,
570 	    "\n# %s to be imported to branch %s\n", path_dir,
571 	    branch_name);
572 	if (initial_content_len == -1)
573 		return got_error_from_errno("asprintf");
574 
575 	err = got_opentemp_named_fd(logmsg_path, &fd,
576 	    GOT_TMPDIR_STR "/got-importmsg");
577 	if (err)
578 		goto done;
579 
580 	if (write(fd, initial_content, initial_content_len) == -1) {
581 		err = got_error_from_errno2("write", *logmsg_path);
582 		goto done;
583 	}
584 
585 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
586 	    initial_content_len, 1);
587 done:
588 	if (fd != -1 && close(fd) == -1 && err == NULL)
589 		err = got_error_from_errno2("close", *logmsg_path);
590 	free(initial_content);
591 	if (err) {
592 		free(*logmsg_path);
593 		*logmsg_path = NULL;
594 	}
595 	return err;
596 }
597 
598 static const struct got_error *
599 import_progress(void *arg, const char *path)
600 {
601 	printf("A  %s\n", path);
602 	return NULL;
603 }
604 
605 static int
606 valid_author(const char *author)
607 {
608 	/*
609 	 * Really dumb email address check; we're only doing this to
610 	 * avoid git's object parser breaking on commits we create.
611 	 */
612 	while (*author && *author != '<')
613 		author++;
614 	if (*author != '<')
615 		return 0;
616 	while (*author && *author != '@')
617 		author++;
618 	if (*author != '@')
619 		return 0;
620 	while (*author && *author != '>')
621 		author++;
622 	return *author == '>';
623 }
624 
625 static const struct got_error *
626 get_author(char **author, struct got_repository *repo,
627     struct got_worktree *worktree)
628 {
629 	const struct got_error *err = NULL;
630 	const char *got_author = NULL, *name, *email;
631 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
632 
633 	*author = NULL;
634 
635 	if (worktree)
636 		worktree_conf = got_worktree_get_gotconfig(worktree);
637 	repo_conf = got_repo_get_gotconfig(repo);
638 
639 	/*
640 	 * Priority of potential author information sources, from most
641 	 * significant to least significant:
642 	 * 1) work tree's .got/got.conf file
643 	 * 2) repository's got.conf file
644 	 * 3) repository's git config file
645 	 * 4) environment variables
646 	 * 5) global git config files (in user's home directory or /etc)
647 	 */
648 
649 	if (worktree_conf)
650 		got_author = got_gotconfig_get_author(worktree_conf);
651 	if (got_author == NULL)
652 		got_author = got_gotconfig_get_author(repo_conf);
653 	if (got_author == NULL) {
654 		name = got_repo_get_gitconfig_author_name(repo);
655 		email = got_repo_get_gitconfig_author_email(repo);
656 		if (name && email) {
657 			if (asprintf(author, "%s <%s>", name, email) == -1)
658 				return got_error_from_errno("asprintf");
659 			return NULL;
660 		}
661 
662 		got_author = getenv("GOT_AUTHOR");
663 		if (got_author == NULL) {
664 			name = got_repo_get_global_gitconfig_author_name(repo);
665 			email = got_repo_get_global_gitconfig_author_email(
666 			    repo);
667 			if (name && email) {
668 				if (asprintf(author, "%s <%s>", name, email)
669 				    == -1)
670 					return got_error_from_errno("asprintf");
671 				return NULL;
672 			}
673 			/* TODO: Look up user in password database? */
674 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
675 		}
676 	}
677 
678 	*author = strdup(got_author);
679 	if (*author == NULL)
680 		return got_error_from_errno("strdup");
681 
682 	if (!valid_author(*author)) {
683 		err = got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", *author);
684 		free(*author);
685 		*author = NULL;
686 	}
687 	return err;
688 }
689 
690 static const struct got_error *
691 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
692     struct got_worktree *worktree)
693 {
694 	const char *got_allowed_signers = NULL;
695 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
696 
697 	*allowed_signers = NULL;
698 
699 	if (worktree)
700 		worktree_conf = got_worktree_get_gotconfig(worktree);
701 	repo_conf = got_repo_get_gotconfig(repo);
702 
703 	/*
704 	 * Priority of potential author information sources, from most
705 	 * significant to least significant:
706 	 * 1) work tree's .got/got.conf file
707 	 * 2) repository's got.conf file
708 	 */
709 
710 	if (worktree_conf)
711 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
712 		    worktree_conf);
713 	if (got_allowed_signers == NULL)
714 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
715 		    repo_conf);
716 
717 	if (got_allowed_signers) {
718 		*allowed_signers = strdup(got_allowed_signers);
719 		if (*allowed_signers == NULL)
720 			return got_error_from_errno("strdup");
721 	}
722 	return NULL;
723 }
724 
725 static const struct got_error *
726 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
727     struct got_worktree *worktree)
728 {
729 	const char *got_revoked_signers = NULL;
730 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
731 
732 	*revoked_signers = NULL;
733 
734 	if (worktree)
735 		worktree_conf = got_worktree_get_gotconfig(worktree);
736 	repo_conf = got_repo_get_gotconfig(repo);
737 
738 	/*
739 	 * Priority of potential author information sources, from most
740 	 * significant to least significant:
741 	 * 1) work tree's .got/got.conf file
742 	 * 2) repository's got.conf file
743 	 */
744 
745 	if (worktree_conf)
746 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
747 		    worktree_conf);
748 	if (got_revoked_signers == NULL)
749 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
750 		    repo_conf);
751 
752 	if (got_revoked_signers) {
753 		*revoked_signers = strdup(got_revoked_signers);
754 		if (*revoked_signers == NULL)
755 			return got_error_from_errno("strdup");
756 	}
757 	return NULL;
758 }
759 
760 static const struct got_error *
761 get_gitconfig_path(char **gitconfig_path)
762 {
763 	const char *homedir = getenv("HOME");
764 
765 	*gitconfig_path = NULL;
766 	if (homedir) {
767 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
768 			return got_error_from_errno("asprintf");
769 
770 	}
771 	return NULL;
772 }
773 
774 static const struct got_error *
775 cmd_import(int argc, char *argv[])
776 {
777 	const struct got_error *error = NULL;
778 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
779 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
780 	const char *branch_name = "main";
781 	char *refname = NULL, *id_str = NULL, *logmsg_path = NULL;
782 	struct got_repository *repo = NULL;
783 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
784 	struct got_object_id *new_commit_id = NULL;
785 	int ch;
786 	struct got_pathlist_head ignores;
787 	struct got_pathlist_entry *pe;
788 	int preserve_logmsg = 0;
789 	int *pack_fds = NULL;
790 
791 	TAILQ_INIT(&ignores);
792 
793 	while ((ch = getopt(argc, argv, "b:m:r:I:")) != -1) {
794 		switch (ch) {
795 		case 'b':
796 			branch_name = optarg;
797 			break;
798 		case 'm':
799 			logmsg = strdup(optarg);
800 			if (logmsg == NULL) {
801 				error = got_error_from_errno("strdup");
802 				goto done;
803 			}
804 			break;
805 		case 'r':
806 			repo_path = realpath(optarg, NULL);
807 			if (repo_path == NULL) {
808 				error = got_error_from_errno2("realpath",
809 				    optarg);
810 				goto done;
811 			}
812 			break;
813 		case 'I':
814 			if (optarg[0] == '\0')
815 				break;
816 			error = got_pathlist_insert(&pe, &ignores, optarg,
817 			    NULL);
818 			if (error)
819 				goto done;
820 			break;
821 		default:
822 			usage_import();
823 			/* NOTREACHED */
824 		}
825 	}
826 
827 	argc -= optind;
828 	argv += optind;
829 
830 #ifndef PROFILE
831 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
832 	    "unveil",
833 	    NULL) == -1)
834 		err(1, "pledge");
835 #endif
836 	if (argc != 1)
837 		usage_import();
838 
839 	if (repo_path == NULL) {
840 		repo_path = getcwd(NULL, 0);
841 		if (repo_path == NULL)
842 			return got_error_from_errno("getcwd");
843 	}
844 	got_path_strip_trailing_slashes(repo_path);
845 	error = get_gitconfig_path(&gitconfig_path);
846 	if (error)
847 		goto done;
848 	error = got_repo_pack_fds_open(&pack_fds);
849 	if (error != NULL)
850 		goto done;
851 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
852 	if (error)
853 		goto done;
854 
855 	error = get_author(&author, repo, NULL);
856 	if (error)
857 		return error;
858 
859 	/*
860 	 * Don't let the user create a branch name with a leading '-'.
861 	 * While technically a valid reference name, this case is usually
862 	 * an unintended typo.
863 	 */
864 	if (branch_name[0] == '-')
865 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
866 
867 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
868 		error = got_error_from_errno("asprintf");
869 		goto done;
870 	}
871 
872 	error = got_ref_open(&branch_ref, repo, refname, 0);
873 	if (error) {
874 		if (error->code != GOT_ERR_NOT_REF)
875 			goto done;
876 	} else {
877 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
878 		    "import target branch already exists");
879 		goto done;
880 	}
881 
882 	path_dir = realpath(argv[0], NULL);
883 	if (path_dir == NULL) {
884 		error = got_error_from_errno2("realpath", argv[0]);
885 		goto done;
886 	}
887 	got_path_strip_trailing_slashes(path_dir);
888 
889 	/*
890 	 * unveil(2) traverses exec(2); if an editor is used we have
891 	 * to apply unveil after the log message has been written.
892 	 */
893 	if (logmsg == NULL || strlen(logmsg) == 0) {
894 		error = get_editor(&editor);
895 		if (error)
896 			goto done;
897 		free(logmsg);
898 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
899 		    path_dir, refname);
900 		if (error) {
901 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
902 			    logmsg_path != NULL)
903 				preserve_logmsg = 1;
904 			goto done;
905 		}
906 	}
907 
908 	if (unveil(path_dir, "r") != 0) {
909 		error = got_error_from_errno2("unveil", path_dir);
910 		if (logmsg_path)
911 			preserve_logmsg = 1;
912 		goto done;
913 	}
914 
915 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
916 	if (error) {
917 		if (logmsg_path)
918 			preserve_logmsg = 1;
919 		goto done;
920 	}
921 
922 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
923 	    author, &ignores, repo, import_progress, NULL);
924 	if (error) {
925 		if (logmsg_path)
926 			preserve_logmsg = 1;
927 		goto done;
928 	}
929 
930 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
931 	if (error) {
932 		if (logmsg_path)
933 			preserve_logmsg = 1;
934 		goto done;
935 	}
936 
937 	error = got_ref_write(branch_ref, repo);
938 	if (error) {
939 		if (logmsg_path)
940 			preserve_logmsg = 1;
941 		goto done;
942 	}
943 
944 	error = got_object_id_str(&id_str, new_commit_id);
945 	if (error) {
946 		if (logmsg_path)
947 			preserve_logmsg = 1;
948 		goto done;
949 	}
950 
951 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
952 	if (error) {
953 		if (error->code != GOT_ERR_NOT_REF) {
954 			if (logmsg_path)
955 				preserve_logmsg = 1;
956 			goto done;
957 		}
958 
959 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
960 		    branch_ref);
961 		if (error) {
962 			if (logmsg_path)
963 				preserve_logmsg = 1;
964 			goto done;
965 		}
966 
967 		error = got_ref_write(head_ref, repo);
968 		if (error) {
969 			if (logmsg_path)
970 				preserve_logmsg = 1;
971 			goto done;
972 		}
973 	}
974 
975 	printf("Created branch %s with commit %s\n",
976 	    got_ref_get_name(branch_ref), id_str);
977 done:
978 	if (pack_fds) {
979 		const struct got_error *pack_err =
980 		    got_repo_pack_fds_close(pack_fds);
981 		if (error == NULL)
982 			error = pack_err;
983 	}
984 	if (preserve_logmsg) {
985 		fprintf(stderr, "%s: log message preserved in %s\n",
986 		    getprogname(), logmsg_path);
987 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
988 		error = got_error_from_errno2("unlink", logmsg_path);
989 	free(logmsg);
990 	free(logmsg_path);
991 	free(repo_path);
992 	free(editor);
993 	free(refname);
994 	free(new_commit_id);
995 	free(id_str);
996 	free(author);
997 	free(gitconfig_path);
998 	if (branch_ref)
999 		got_ref_close(branch_ref);
1000 	if (head_ref)
1001 		got_ref_close(head_ref);
1002 	return error;
1003 }
1004 
1005 __dead static void
1006 usage_clone(void)
1007 {
1008 	fprintf(stderr, "usage: %s clone [-a] [-b branch] [-l] [-m] [-q] [-v] "
1009 	    "[-R reference] repository-url [directory]\n", getprogname());
1010 	exit(1);
1011 }
1012 
1013 struct got_fetch_progress_arg {
1014 	char last_scaled_size[FMT_SCALED_STRSIZE];
1015 	int last_p_indexed;
1016 	int last_p_resolved;
1017 	int verbosity;
1018 
1019 	struct got_repository *repo;
1020 
1021 	int create_configs;
1022 	int configs_created;
1023 	struct {
1024 		struct got_pathlist_head *symrefs;
1025 		struct got_pathlist_head *wanted_branches;
1026 		struct got_pathlist_head *wanted_refs;
1027 		const char *proto;
1028 		const char *host;
1029 		const char *port;
1030 		const char *remote_repo_path;
1031 		const char *git_url;
1032 		int fetch_all_branches;
1033 		int mirror_references;
1034 	} config_info;
1035 };
1036 
1037 /* XXX forward declaration */
1038 static const struct got_error *
1039 create_config_files(const char *proto, const char *host, const char *port,
1040     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1041     int mirror_references, struct got_pathlist_head *symrefs,
1042     struct got_pathlist_head *wanted_branches,
1043     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1044 
1045 static const struct got_error *
1046 fetch_progress(void *arg, const char *message, off_t packfile_size,
1047     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1048 {
1049 	const struct got_error *err = NULL;
1050 	struct got_fetch_progress_arg *a = arg;
1051 	char scaled_size[FMT_SCALED_STRSIZE];
1052 	int p_indexed, p_resolved;
1053 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1054 
1055 	/*
1056 	 * In order to allow a failed clone to be resumed with 'got fetch'
1057 	 * we try to create configuration files as soon as possible.
1058 	 * Once the server has sent information about its default branch
1059 	 * we have all required information.
1060 	 */
1061 	if (a->create_configs && !a->configs_created &&
1062 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1063 		err = create_config_files(a->config_info.proto,
1064 		    a->config_info.host, a->config_info.port,
1065 		    a->config_info.remote_repo_path,
1066 		    a->config_info.git_url,
1067 		    a->config_info.fetch_all_branches,
1068 		    a->config_info.mirror_references,
1069 		    a->config_info.symrefs,
1070 		    a->config_info.wanted_branches,
1071 		    a->config_info.wanted_refs, a->repo);
1072 		if (err)
1073 			return err;
1074 		a->configs_created = 1;
1075 	}
1076 
1077 	if (a->verbosity < 0)
1078 		return NULL;
1079 
1080 	if (message && message[0] != '\0') {
1081 		printf("\rserver: %s", message);
1082 		fflush(stdout);
1083 		return NULL;
1084 	}
1085 
1086 	if (packfile_size > 0 || nobj_indexed > 0) {
1087 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1088 		    (a->last_scaled_size[0] == '\0' ||
1089 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1090 			print_size = 1;
1091 			if (strlcpy(a->last_scaled_size, scaled_size,
1092 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1093 				return got_error(GOT_ERR_NO_SPACE);
1094 		}
1095 		if (nobj_indexed > 0) {
1096 			p_indexed = (nobj_indexed * 100) / nobj_total;
1097 			if (p_indexed != a->last_p_indexed) {
1098 				a->last_p_indexed = p_indexed;
1099 				print_indexed = 1;
1100 				print_size = 1;
1101 			}
1102 		}
1103 		if (nobj_resolved > 0) {
1104 			p_resolved = (nobj_resolved * 100) /
1105 			    (nobj_total - nobj_loose);
1106 			if (p_resolved != a->last_p_resolved) {
1107 				a->last_p_resolved = p_resolved;
1108 				print_resolved = 1;
1109 				print_indexed = 1;
1110 				print_size = 1;
1111 			}
1112 		}
1113 
1114 	}
1115 	if (print_size || print_indexed || print_resolved)
1116 		printf("\r");
1117 	if (print_size)
1118 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1119 	if (print_indexed)
1120 		printf("; indexing %d%%", p_indexed);
1121 	if (print_resolved)
1122 		printf("; resolving deltas %d%%", p_resolved);
1123 	if (print_size || print_indexed || print_resolved)
1124 		fflush(stdout);
1125 
1126 	return NULL;
1127 }
1128 
1129 static const struct got_error *
1130 create_symref(const char *refname, struct got_reference *target_ref,
1131     int verbosity, struct got_repository *repo)
1132 {
1133 	const struct got_error *err;
1134 	struct got_reference *head_symref;
1135 
1136 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1137 	if (err)
1138 		return err;
1139 
1140 	err = got_ref_write(head_symref, repo);
1141 	if (err == NULL && verbosity > 0) {
1142 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1143 		    got_ref_get_name(target_ref));
1144 	}
1145 	got_ref_close(head_symref);
1146 	return err;
1147 }
1148 
1149 static const struct got_error *
1150 list_remote_refs(struct got_pathlist_head *symrefs,
1151     struct got_pathlist_head *refs)
1152 {
1153 	const struct got_error *err;
1154 	struct got_pathlist_entry *pe;
1155 
1156 	TAILQ_FOREACH(pe, symrefs, entry) {
1157 		const char *refname = pe->path;
1158 		const char *targetref = pe->data;
1159 
1160 		printf("%s: %s\n", refname, targetref);
1161 	}
1162 
1163 	TAILQ_FOREACH(pe, refs, entry) {
1164 		const char *refname = pe->path;
1165 		struct got_object_id *id = pe->data;
1166 		char *id_str;
1167 
1168 		err = got_object_id_str(&id_str, id);
1169 		if (err)
1170 			return err;
1171 		printf("%s: %s\n", refname, id_str);
1172 		free(id_str);
1173 	}
1174 
1175 	return NULL;
1176 }
1177 
1178 static const struct got_error *
1179 create_ref(const char *refname, struct got_object_id *id,
1180     int verbosity, struct got_repository *repo)
1181 {
1182 	const struct got_error *err = NULL;
1183 	struct got_reference *ref;
1184 	char *id_str;
1185 
1186 	err = got_object_id_str(&id_str, id);
1187 	if (err)
1188 		return err;
1189 
1190 	err = got_ref_alloc(&ref, refname, id);
1191 	if (err)
1192 		goto done;
1193 
1194 	err = got_ref_write(ref, repo);
1195 	got_ref_close(ref);
1196 
1197 	if (err == NULL && verbosity >= 0)
1198 		printf("Created reference %s: %s\n", refname, id_str);
1199 done:
1200 	free(id_str);
1201 	return err;
1202 }
1203 
1204 static int
1205 match_wanted_ref(const char *refname, const char *wanted_ref)
1206 {
1207 	if (strncmp(refname, "refs/", 5) != 0)
1208 		return 0;
1209 	refname += 5;
1210 
1211 	/*
1212 	 * Prevent fetching of references that won't make any
1213 	 * sense outside of the remote repository's context.
1214 	 */
1215 	if (strncmp(refname, "got/", 4) == 0)
1216 		return 0;
1217 	if (strncmp(refname, "remotes/", 8) == 0)
1218 		return 0;
1219 
1220 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1221 		wanted_ref += 5;
1222 
1223 	/* Allow prefix match. */
1224 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1225 		return 1;
1226 
1227 	/* Allow exact match. */
1228 	return (strcmp(refname, wanted_ref) == 0);
1229 }
1230 
1231 static int
1232 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1233 {
1234 	struct got_pathlist_entry *pe;
1235 
1236 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1237 		if (match_wanted_ref(refname, pe->path))
1238 			return 1;
1239 	}
1240 
1241 	return 0;
1242 }
1243 
1244 static const struct got_error *
1245 create_wanted_ref(const char *refname, struct got_object_id *id,
1246     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1247 {
1248 	const struct got_error *err;
1249 	char *remote_refname;
1250 
1251 	if (strncmp("refs/", refname, 5) == 0)
1252 		refname += 5;
1253 
1254 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1255 	    remote_repo_name, refname) == -1)
1256 		return got_error_from_errno("asprintf");
1257 
1258 	err = create_ref(remote_refname, id, verbosity, repo);
1259 	free(remote_refname);
1260 	return err;
1261 }
1262 
1263 static const struct got_error *
1264 create_gotconfig(const char *proto, const char *host, const char *port,
1265     const char *remote_repo_path, const char *default_branch,
1266     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1267     struct got_pathlist_head *wanted_refs, int mirror_references,
1268     struct got_repository *repo)
1269 {
1270 	const struct got_error *err = NULL;
1271 	char *gotconfig_path = NULL;
1272 	char *gotconfig = NULL;
1273 	FILE *gotconfig_file = NULL;
1274 	const char *branchname = NULL;
1275 	char *branches = NULL, *refs = NULL;
1276 	ssize_t n;
1277 
1278 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1279 		struct got_pathlist_entry *pe;
1280 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1281 			char *s;
1282 			branchname = pe->path;
1283 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1284 				branchname += 11;
1285 			if (asprintf(&s, "%s\"%s\" ",
1286 			    branches ? branches : "", branchname) == -1) {
1287 				err = got_error_from_errno("asprintf");
1288 				goto done;
1289 			}
1290 			free(branches);
1291 			branches = s;
1292 		}
1293 	} else if (!fetch_all_branches && default_branch) {
1294 		branchname = default_branch;
1295 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1296 			branchname += 11;
1297 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1298 			err = got_error_from_errno("asprintf");
1299 			goto done;
1300 		}
1301 	}
1302 	if (!TAILQ_EMPTY(wanted_refs)) {
1303 		struct got_pathlist_entry *pe;
1304 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1305 			char *s;
1306 			const char *refname = pe->path;
1307 			if (strncmp(refname, "refs/", 5) == 0)
1308 				branchname += 5;
1309 			if (asprintf(&s, "%s\"%s\" ",
1310 			    refs ? refs : "", refname) == -1) {
1311 				err = got_error_from_errno("asprintf");
1312 				goto done;
1313 			}
1314 			free(refs);
1315 			refs = s;
1316 		}
1317 	}
1318 
1319 	/* Create got.conf(5). */
1320 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1321 	if (gotconfig_path == NULL) {
1322 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1323 		goto done;
1324 	}
1325 	gotconfig_file = fopen(gotconfig_path, "ae");
1326 	if (gotconfig_file == NULL) {
1327 		err = got_error_from_errno2("fopen", gotconfig_path);
1328 		goto done;
1329 	}
1330 	if (asprintf(&gotconfig,
1331 	    "remote \"%s\" {\n"
1332 	    "\tserver %s\n"
1333 	    "\tprotocol %s\n"
1334 	    "%s%s%s"
1335 	    "\trepository \"%s\"\n"
1336 	    "%s%s%s"
1337 	    "%s%s%s"
1338 	    "%s"
1339 	    "%s"
1340 	    "}\n",
1341 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1342 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1343 	    remote_repo_path, branches ? "\tbranch { " : "",
1344 	    branches ? branches : "", branches ? "}\n" : "", 
1345 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "", 
1346 	    mirror_references ? "\tmirror_references yes\n" : "",
1347 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1348 		err = got_error_from_errno("asprintf");
1349 		goto done;
1350 	}
1351 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1352 	if (n != strlen(gotconfig)) {
1353 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1354 		goto done;
1355 	}
1356 
1357 done:
1358 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1359 		err = got_error_from_errno2("fclose", gotconfig_path);
1360 	free(gotconfig_path);
1361 	free(branches);
1362 	return err;
1363 }
1364 
1365 static const struct got_error *
1366 create_gitconfig(const char *git_url, const char *default_branch,
1367     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1368     struct got_pathlist_head *wanted_refs, int mirror_references,
1369     struct got_repository *repo)
1370 {
1371 	const struct got_error *err = NULL;
1372 	char *gitconfig_path = NULL;
1373 	char *gitconfig = NULL;
1374 	FILE *gitconfig_file = NULL;
1375 	char *branches = NULL, *refs = NULL;
1376 	const char *branchname;
1377 	ssize_t n;
1378 
1379 	/* Create a config file Git can understand. */
1380 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1381 	if (gitconfig_path == NULL) {
1382 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1383 		goto done;
1384 	}
1385 	gitconfig_file = fopen(gitconfig_path, "ae");
1386 	if (gitconfig_file == NULL) {
1387 		err = got_error_from_errno2("fopen", gitconfig_path);
1388 		goto done;
1389 	}
1390 	if (fetch_all_branches) {
1391 		if (mirror_references) {
1392 			if (asprintf(&branches,
1393 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1394 				err = got_error_from_errno("asprintf");
1395 				goto done;
1396 			}
1397 		} else if (asprintf(&branches,
1398 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1399 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1400 			err = got_error_from_errno("asprintf");
1401 			goto done;
1402 		}
1403 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1404 		struct got_pathlist_entry *pe;
1405 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1406 			char *s;
1407 			branchname = pe->path;
1408 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1409 				branchname += 11;
1410 			if (mirror_references) {
1411 				if (asprintf(&s,
1412 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1413 				    branches ? branches : "",
1414 				    branchname, branchname) == -1) {
1415 					err = got_error_from_errno("asprintf");
1416 					goto done;
1417 				}
1418 			} else if (asprintf(&s,
1419 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1420 			    branches ? branches : "",
1421 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1422 			    branchname) == -1) {
1423 				err = got_error_from_errno("asprintf");
1424 				goto done;
1425 			}
1426 			free(branches);
1427 			branches = s;
1428 		}
1429 	} else {
1430 		/*
1431 		 * If the server specified a default branch, use just that one.
1432 		 * Otherwise fall back to fetching all branches on next fetch.
1433 		 */
1434 		if (default_branch) {
1435 			branchname = default_branch;
1436 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1437 				branchname += 11;
1438 		} else
1439 			branchname = "*"; /* fall back to all branches */
1440 		if (mirror_references) {
1441 			if (asprintf(&branches,
1442 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1443 			    branchname, branchname) == -1) {
1444 				err = got_error_from_errno("asprintf");
1445 				goto done;
1446 			}
1447 		} else if (asprintf(&branches,
1448 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1449 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1450 		    branchname) == -1) {
1451 			err = got_error_from_errno("asprintf");
1452 			goto done;
1453 		}
1454 	}
1455 	if (!TAILQ_EMPTY(wanted_refs)) {
1456 		struct got_pathlist_entry *pe;
1457 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1458 			char *s;
1459 			const char *refname = pe->path;
1460 			if (strncmp(refname, "refs/", 5) == 0)
1461 				refname += 5;
1462 			if (mirror_references) {
1463 				if (asprintf(&s,
1464 				    "%s\tfetch = refs/%s:refs/%s\n",
1465 				    refs ? refs : "", refname, refname) == -1) {
1466 					err = got_error_from_errno("asprintf");
1467 					goto done;
1468 				}
1469 			} else if (asprintf(&s,
1470 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1471 			    refs ? refs : "",
1472 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1473 			    refname) == -1) {
1474 				err = got_error_from_errno("asprintf");
1475 				goto done;
1476 			}
1477 			free(refs);
1478 			refs = s;
1479 		}
1480 	}
1481 
1482 	if (asprintf(&gitconfig,
1483 	    "[remote \"%s\"]\n"
1484 	    "\turl = %s\n"
1485 	    "%s"
1486 	    "%s"
1487 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1488 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1489 	    refs ? refs : "") == -1) {
1490 		err = got_error_from_errno("asprintf");
1491 		goto done;
1492 	}
1493 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1494 	if (n != strlen(gitconfig)) {
1495 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1496 		goto done;
1497 	}
1498 done:
1499 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1500 		err = got_error_from_errno2("fclose", gitconfig_path);
1501 	free(gitconfig_path);
1502 	free(branches);
1503 	return err;
1504 }
1505 
1506 static const struct got_error *
1507 create_config_files(const char *proto, const char *host, const char *port,
1508     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1509     int mirror_references, struct got_pathlist_head *symrefs,
1510     struct got_pathlist_head *wanted_branches,
1511     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1512 {
1513 	const struct got_error *err = NULL;
1514 	const char *default_branch = NULL;
1515 	struct got_pathlist_entry *pe;
1516 
1517 	/*
1518 	 * If we asked for a set of wanted branches then use the first
1519 	 * one of those.
1520 	 */
1521 	if (!TAILQ_EMPTY(wanted_branches)) {
1522 		pe = TAILQ_FIRST(wanted_branches);
1523 		default_branch = pe->path;
1524 	} else {
1525 		/* First HEAD ref listed by server is the default branch. */
1526 		TAILQ_FOREACH(pe, symrefs, entry) {
1527 			const char *refname = pe->path;
1528 			const char *target = pe->data;
1529 
1530 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1531 				continue;
1532 
1533 			default_branch = target;
1534 			break;
1535 		}
1536 	}
1537 
1538 	/* Create got.conf(5). */
1539 	err = create_gotconfig(proto, host, port, remote_repo_path,
1540 	    default_branch, fetch_all_branches, wanted_branches,
1541 	    wanted_refs, mirror_references, repo);
1542 	if (err)
1543 		return err;
1544 
1545 	/* Create a config file Git can understand. */
1546 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1547 	    wanted_branches, wanted_refs, mirror_references, repo);
1548 }
1549 
1550 static const struct got_error *
1551 cmd_clone(int argc, char *argv[])
1552 {
1553 	const struct got_error *error = NULL;
1554 	const char *uri, *dirname;
1555 	char *proto, *host, *port, *repo_name, *server_path;
1556 	char *default_destdir = NULL, *id_str = NULL;
1557 	const char *repo_path;
1558 	struct got_repository *repo = NULL;
1559 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1560 	struct got_pathlist_entry *pe;
1561 	struct got_object_id *pack_hash = NULL;
1562 	int ch, fetchfd = -1, fetchstatus;
1563 	pid_t fetchpid = -1;
1564 	struct got_fetch_progress_arg fpa;
1565 	char *git_url = NULL;
1566 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1567 	int list_refs_only = 0;
1568 	int *pack_fds = NULL;
1569 
1570 	TAILQ_INIT(&refs);
1571 	TAILQ_INIT(&symrefs);
1572 	TAILQ_INIT(&wanted_branches);
1573 	TAILQ_INIT(&wanted_refs);
1574 
1575 	while ((ch = getopt(argc, argv, "ab:lmvqR:")) != -1) {
1576 		switch (ch) {
1577 		case 'a':
1578 			fetch_all_branches = 1;
1579 			break;
1580 		case 'b':
1581 			error = got_pathlist_append(&wanted_branches,
1582 			    optarg, NULL);
1583 			if (error)
1584 				return error;
1585 			break;
1586 		case 'l':
1587 			list_refs_only = 1;
1588 			break;
1589 		case 'm':
1590 			mirror_references = 1;
1591 			break;
1592 		case 'v':
1593 			if (verbosity < 0)
1594 				verbosity = 0;
1595 			else if (verbosity < 3)
1596 				verbosity++;
1597 			break;
1598 		case 'q':
1599 			verbosity = -1;
1600 			break;
1601 		case 'R':
1602 			error = got_pathlist_append(&wanted_refs,
1603 			    optarg, NULL);
1604 			if (error)
1605 				return error;
1606 			break;
1607 		default:
1608 			usage_clone();
1609 			break;
1610 		}
1611 	}
1612 	argc -= optind;
1613 	argv += optind;
1614 
1615 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1616 		option_conflict('a', 'b');
1617 	if (list_refs_only) {
1618 		if (!TAILQ_EMPTY(&wanted_branches))
1619 			option_conflict('l', 'b');
1620 		if (fetch_all_branches)
1621 			option_conflict('l', 'a');
1622 		if (mirror_references)
1623 			option_conflict('l', 'm');
1624 		if (!TAILQ_EMPTY(&wanted_refs))
1625 			option_conflict('l', 'R');
1626 	}
1627 
1628 	uri = argv[0];
1629 
1630 	if (argc == 1)
1631 		dirname = NULL;
1632 	else if (argc == 2)
1633 		dirname = argv[1];
1634 	else
1635 		usage_clone();
1636 
1637 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1638 	    &repo_name, uri);
1639 	if (error)
1640 		goto done;
1641 
1642 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1643 	    host, port ? ":" : "", port ? port : "",
1644 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1645 		error = got_error_from_errno("asprintf");
1646 		goto done;
1647 	}
1648 
1649 	if (strcmp(proto, "git") == 0) {
1650 #ifndef PROFILE
1651 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1652 		    "sendfd dns inet unveil", NULL) == -1)
1653 			err(1, "pledge");
1654 #endif
1655 	} else if (strcmp(proto, "git+ssh") == 0 ||
1656 	    strcmp(proto, "ssh") == 0) {
1657 #ifndef PROFILE
1658 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1659 		    "sendfd unveil", NULL) == -1)
1660 			err(1, "pledge");
1661 #endif
1662 	} else if (strcmp(proto, "http") == 0 ||
1663 	    strcmp(proto, "git+http") == 0) {
1664 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1665 		goto done;
1666 	} else {
1667 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1668 		goto done;
1669 	}
1670 	if (dirname == NULL) {
1671 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1672 			error = got_error_from_errno("asprintf");
1673 			goto done;
1674 		}
1675 		repo_path = default_destdir;
1676 	} else
1677 		repo_path = dirname;
1678 
1679 	if (!list_refs_only) {
1680 		error = got_path_mkdir(repo_path);
1681 		if (error &&
1682 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1683 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1684 			goto done;
1685 		if (!got_path_dir_is_empty(repo_path)) {
1686 			error = got_error_path(repo_path,
1687 			    GOT_ERR_DIR_NOT_EMPTY);
1688 			goto done;
1689 		}
1690 	}
1691 
1692 	error = got_dial_apply_unveil(proto);
1693 	if (error)
1694 		goto done;
1695 
1696 	error = apply_unveil(repo_path, 0, NULL);
1697 	if (error)
1698 		goto done;
1699 
1700 	if (verbosity >= 0)
1701 		printf("Connecting to %s%s%s\n", host,
1702 		    port ? ":" : "", port ? port : "");
1703 
1704 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1705 	    server_path, verbosity);
1706 	if (error)
1707 		goto done;
1708 
1709 	if (!list_refs_only) {
1710 		error = got_repo_init(repo_path);
1711 		if (error)
1712 			goto done;
1713 		error = got_repo_pack_fds_open(&pack_fds);
1714 		if (error != NULL)
1715 			goto done;
1716 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1717 		if (error)
1718 			goto done;
1719 	}
1720 
1721 	fpa.last_scaled_size[0] = '\0';
1722 	fpa.last_p_indexed = -1;
1723 	fpa.last_p_resolved = -1;
1724 	fpa.verbosity = verbosity;
1725 	fpa.create_configs = 1;
1726 	fpa.configs_created = 0;
1727 	fpa.repo = repo;
1728 	fpa.config_info.symrefs = &symrefs;
1729 	fpa.config_info.wanted_branches = &wanted_branches;
1730 	fpa.config_info.wanted_refs = &wanted_refs;
1731 	fpa.config_info.proto = proto;
1732 	fpa.config_info.host = host;
1733 	fpa.config_info.port = port;
1734 	fpa.config_info.remote_repo_path = server_path;
1735 	fpa.config_info.git_url = git_url;
1736 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1737 	fpa.config_info.mirror_references = mirror_references;
1738 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1739 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1740 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1741 	    list_refs_only, verbosity, fetchfd, repo,
1742 	    fetch_progress, &fpa);
1743 	if (error)
1744 		goto done;
1745 
1746 	if (list_refs_only) {
1747 		error = list_remote_refs(&symrefs, &refs);
1748 		goto done;
1749 	}
1750 
1751 	if (pack_hash == NULL) {
1752 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1753 		    "server sent an empty pack file");
1754 		goto done;
1755 	}
1756 	error = got_object_id_str(&id_str, pack_hash);
1757 	if (error)
1758 		goto done;
1759 	if (verbosity >= 0)
1760 		printf("\nFetched %s.pack\n", id_str);
1761 	free(id_str);
1762 
1763 	/* Set up references provided with the pack file. */
1764 	TAILQ_FOREACH(pe, &refs, entry) {
1765 		const char *refname = pe->path;
1766 		struct got_object_id *id = pe->data;
1767 		char *remote_refname;
1768 
1769 		if (is_wanted_ref(&wanted_refs, refname) &&
1770 		    !mirror_references) {
1771 			error = create_wanted_ref(refname, id,
1772 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1773 			    verbosity - 1, repo);
1774 			if (error)
1775 				goto done;
1776 			continue;
1777 		}
1778 
1779 		error = create_ref(refname, id, verbosity - 1, repo);
1780 		if (error)
1781 			goto done;
1782 
1783 		if (mirror_references)
1784 			continue;
1785 
1786 		if (strncmp("refs/heads/", refname, 11) != 0)
1787 			continue;
1788 
1789 		if (asprintf(&remote_refname,
1790 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1791 		    refname + 11) == -1) {
1792 			error = got_error_from_errno("asprintf");
1793 			goto done;
1794 		}
1795 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1796 		free(remote_refname);
1797 		if (error)
1798 			goto done;
1799 	}
1800 
1801 	/* Set the HEAD reference if the server provided one. */
1802 	TAILQ_FOREACH(pe, &symrefs, entry) {
1803 		struct got_reference *target_ref;
1804 		const char *refname = pe->path;
1805 		const char *target = pe->data;
1806 		char *remote_refname = NULL, *remote_target = NULL;
1807 
1808 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1809 			continue;
1810 
1811 		error = got_ref_open(&target_ref, repo, target, 0);
1812 		if (error) {
1813 			if (error->code == GOT_ERR_NOT_REF) {
1814 				error = NULL;
1815 				continue;
1816 			}
1817 			goto done;
1818 		}
1819 
1820 		error = create_symref(refname, target_ref, verbosity, repo);
1821 		got_ref_close(target_ref);
1822 		if (error)
1823 			goto done;
1824 
1825 		if (mirror_references)
1826 			continue;
1827 
1828 		if (strncmp("refs/heads/", target, 11) != 0)
1829 			continue;
1830 
1831 		if (asprintf(&remote_refname,
1832 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1833 		    refname) == -1) {
1834 			error = got_error_from_errno("asprintf");
1835 			goto done;
1836 		}
1837 		if (asprintf(&remote_target,
1838 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1839 		    target + 11) == -1) {
1840 			error = got_error_from_errno("asprintf");
1841 			free(remote_refname);
1842 			goto done;
1843 		}
1844 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1845 		if (error) {
1846 			free(remote_refname);
1847 			free(remote_target);
1848 			if (error->code == GOT_ERR_NOT_REF) {
1849 				error = NULL;
1850 				continue;
1851 			}
1852 			goto done;
1853 		}
1854 		error = create_symref(remote_refname, target_ref,
1855 		    verbosity - 1, repo);
1856 		free(remote_refname);
1857 		free(remote_target);
1858 		got_ref_close(target_ref);
1859 		if (error)
1860 			goto done;
1861 	}
1862 	if (pe == NULL) {
1863 		/*
1864 		 * We failed to set the HEAD reference. If we asked for
1865 		 * a set of wanted branches use the first of one of those
1866 		 * which could be fetched instead.
1867 		 */
1868 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1869 			const char *target = pe->path;
1870 			struct got_reference *target_ref;
1871 
1872 			error = got_ref_open(&target_ref, repo, target, 0);
1873 			if (error) {
1874 				if (error->code == GOT_ERR_NOT_REF) {
1875 					error = NULL;
1876 					continue;
1877 				}
1878 				goto done;
1879 			}
1880 
1881 			error = create_symref(GOT_REF_HEAD, target_ref,
1882 			    verbosity, repo);
1883 			got_ref_close(target_ref);
1884 			if (error)
1885 				goto done;
1886 			break;
1887 		}
1888 	}
1889 
1890 	if (verbosity >= 0)
1891 		printf("Created %s repository '%s'\n",
1892 		    mirror_references ? "mirrored" : "cloned", repo_path);
1893 done:
1894 	if (pack_fds) {
1895 		const struct got_error *pack_err =
1896 		    got_repo_pack_fds_close(pack_fds);
1897 		if (error == NULL)
1898 			error = pack_err;
1899 	}
1900 	if (fetchpid > 0) {
1901 		if (kill(fetchpid, SIGTERM) == -1)
1902 			error = got_error_from_errno("kill");
1903 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1904 			error = got_error_from_errno("waitpid");
1905 	}
1906 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1907 		error = got_error_from_errno("close");
1908 	if (repo) {
1909 		const struct got_error *close_err = got_repo_close(repo);
1910 		if (error == NULL)
1911 			error = close_err;
1912 	}
1913 	TAILQ_FOREACH(pe, &refs, entry) {
1914 		free((void *)pe->path);
1915 		free(pe->data);
1916 	}
1917 	got_pathlist_free(&refs);
1918 	TAILQ_FOREACH(pe, &symrefs, entry) {
1919 		free((void *)pe->path);
1920 		free(pe->data);
1921 	}
1922 	got_pathlist_free(&symrefs);
1923 	got_pathlist_free(&wanted_branches);
1924 	got_pathlist_free(&wanted_refs);
1925 	free(pack_hash);
1926 	free(proto);
1927 	free(host);
1928 	free(port);
1929 	free(server_path);
1930 	free(repo_name);
1931 	free(default_destdir);
1932 	free(git_url);
1933 	return error;
1934 }
1935 
1936 static const struct got_error *
1937 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1938     int replace_tags, int verbosity, struct got_repository *repo)
1939 {
1940 	const struct got_error *err = NULL;
1941 	char *new_id_str = NULL;
1942 	struct got_object_id *old_id = NULL;
1943 
1944 	err = got_object_id_str(&new_id_str, new_id);
1945 	if (err)
1946 		goto done;
1947 
1948 	if (!replace_tags &&
1949 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1950 		err = got_ref_resolve(&old_id, repo, ref);
1951 		if (err)
1952 			goto done;
1953 		if (got_object_id_cmp(old_id, new_id) == 0)
1954 			goto done;
1955 		if (verbosity >= 0) {
1956 			printf("Rejecting update of existing tag %s: %s\n",
1957 			    got_ref_get_name(ref), new_id_str);
1958 		}
1959 		goto done;
1960 	}
1961 
1962 	if (got_ref_is_symbolic(ref)) {
1963 		if (verbosity >= 0) {
1964 			printf("Replacing reference %s: %s\n",
1965 			    got_ref_get_name(ref),
1966 			    got_ref_get_symref_target(ref));
1967 		}
1968 		err = got_ref_change_symref_to_ref(ref, new_id);
1969 		if (err)
1970 			goto done;
1971 		err = got_ref_write(ref, repo);
1972 		if (err)
1973 			goto done;
1974 	} else {
1975 		err = got_ref_resolve(&old_id, repo, ref);
1976 		if (err)
1977 			goto done;
1978 		if (got_object_id_cmp(old_id, new_id) == 0)
1979 			goto done;
1980 
1981 		err = got_ref_change_ref(ref, new_id);
1982 		if (err)
1983 			goto done;
1984 		err = got_ref_write(ref, repo);
1985 		if (err)
1986 			goto done;
1987 	}
1988 
1989 	if (verbosity >= 0)
1990 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1991 		    new_id_str);
1992 done:
1993 	free(old_id);
1994 	free(new_id_str);
1995 	return err;
1996 }
1997 
1998 static const struct got_error *
1999 update_symref(const char *refname, struct got_reference *target_ref,
2000     int verbosity, struct got_repository *repo)
2001 {
2002 	const struct got_error *err = NULL, *unlock_err;
2003 	struct got_reference *symref;
2004 	int symref_is_locked = 0;
2005 
2006 	err = got_ref_open(&symref, repo, refname, 1);
2007 	if (err) {
2008 		if (err->code != GOT_ERR_NOT_REF)
2009 			return err;
2010 		err = got_ref_alloc_symref(&symref, refname, target_ref);
2011 		if (err)
2012 			goto done;
2013 
2014 		err = got_ref_write(symref, repo);
2015 		if (err)
2016 			goto done;
2017 
2018 		if (verbosity >= 0)
2019 			printf("Created reference %s: %s\n",
2020 			    got_ref_get_name(symref),
2021 			    got_ref_get_symref_target(symref));
2022 	} else {
2023 		symref_is_locked = 1;
2024 
2025 		if (strcmp(got_ref_get_symref_target(symref),
2026 		    got_ref_get_name(target_ref)) == 0)
2027 			goto done;
2028 
2029 		err = got_ref_change_symref(symref,
2030 		    got_ref_get_name(target_ref));
2031 		if (err)
2032 			goto done;
2033 
2034 		err = got_ref_write(symref, repo);
2035 		if (err)
2036 			goto done;
2037 
2038 		if (verbosity >= 0)
2039 			printf("Updated %s: %s\n", got_ref_get_name(symref),
2040 			    got_ref_get_symref_target(symref));
2041 
2042 	}
2043 done:
2044 	if (symref_is_locked) {
2045 		unlock_err = got_ref_unlock(symref);
2046 		if (unlock_err && err == NULL)
2047 			err = unlock_err;
2048 	}
2049 	got_ref_close(symref);
2050 	return err;
2051 }
2052 
2053 __dead static void
2054 usage_fetch(void)
2055 {
2056 	fprintf(stderr, "usage: %s fetch [-a] [-b branch] [-d] [-l] "
2057 	    "[-r repository-path] [-t] [-q] [-v] [-R reference] [-X] "
2058 	    "[remote-repository-name]\n",
2059 	    getprogname());
2060 	exit(1);
2061 }
2062 
2063 static const struct got_error *
2064 delete_missing_ref(struct got_reference *ref,
2065     int verbosity, struct got_repository *repo)
2066 {
2067 	const struct got_error *err = NULL;
2068 	struct got_object_id *id = NULL;
2069 	char *id_str = NULL;
2070 
2071 	if (got_ref_is_symbolic(ref)) {
2072 		err = got_ref_delete(ref, repo);
2073 		if (err)
2074 			return err;
2075 		if (verbosity >= 0) {
2076 			printf("Deleted %s: %s\n",
2077 			    got_ref_get_name(ref),
2078 			    got_ref_get_symref_target(ref));
2079 		}
2080 	} else {
2081 		err = got_ref_resolve(&id, repo, ref);
2082 		if (err)
2083 			return err;
2084 		err = got_object_id_str(&id_str, id);
2085 		if (err)
2086 			goto done;
2087 
2088 		err = got_ref_delete(ref, repo);
2089 		if (err)
2090 			goto done;
2091 		if (verbosity >= 0) {
2092 			printf("Deleted %s: %s\n",
2093 			    got_ref_get_name(ref), id_str);
2094 		}
2095 	}
2096 done:
2097 	free(id);
2098 	free(id_str);
2099 	return NULL;
2100 }
2101 
2102 static const struct got_error *
2103 delete_missing_refs(struct got_pathlist_head *their_refs,
2104     struct got_pathlist_head *their_symrefs,
2105     const struct got_remote_repo *remote,
2106     int verbosity, struct got_repository *repo)
2107 {
2108 	const struct got_error *err = NULL, *unlock_err;
2109 	struct got_reflist_head my_refs;
2110 	struct got_reflist_entry *re;
2111 	struct got_pathlist_entry *pe;
2112 	char *remote_namespace = NULL;
2113 	char *local_refname = NULL;
2114 
2115 	TAILQ_INIT(&my_refs);
2116 
2117 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2118 	    == -1)
2119 		return got_error_from_errno("asprintf");
2120 
2121 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2122 	if (err)
2123 		goto done;
2124 
2125 	TAILQ_FOREACH(re, &my_refs, entry) {
2126 		const char *refname = got_ref_get_name(re->ref);
2127 		const char *their_refname;
2128 
2129 		if (remote->mirror_references) {
2130 			their_refname = refname;
2131 		} else {
2132 			if (strncmp(refname, remote_namespace,
2133 			    strlen(remote_namespace)) == 0) {
2134 				if (strcmp(refname + strlen(remote_namespace),
2135 				    GOT_REF_HEAD) == 0)
2136 					continue;
2137 				if (asprintf(&local_refname, "refs/heads/%s",
2138 				    refname + strlen(remote_namespace)) == -1) {
2139 					err = got_error_from_errno("asprintf");
2140 					goto done;
2141 				}
2142 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2143 				continue;
2144 
2145 			their_refname = local_refname;
2146 		}
2147 	
2148 		TAILQ_FOREACH(pe, their_refs, entry) {
2149 			if (strcmp(their_refname, pe->path) == 0)
2150 				break;
2151 		}
2152 		if (pe != NULL)
2153 			continue;
2154 
2155 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2156 			if (strcmp(their_refname, pe->path) == 0)
2157 				break;
2158 		}
2159 		if (pe != NULL)
2160 			continue;
2161 
2162 		err = delete_missing_ref(re->ref, verbosity, repo);
2163 		if (err)
2164 			break;
2165 
2166 		if (local_refname) {
2167 			struct got_reference *ref;
2168 			err = got_ref_open(&ref, repo, local_refname, 1);
2169 			if (err) {
2170 				if (err->code != GOT_ERR_NOT_REF)
2171 					break;
2172 				free(local_refname);
2173 				local_refname = NULL;
2174 				continue;
2175 			}
2176 			err = delete_missing_ref(ref, verbosity, repo);
2177 			if (err)
2178 				break;
2179 			unlock_err = got_ref_unlock(ref);
2180 			got_ref_close(ref);
2181 			if (unlock_err && err == NULL) {
2182 				err = unlock_err;
2183 				break;
2184 			}
2185 
2186 			free(local_refname);
2187 			local_refname = NULL;
2188 		}
2189 	}
2190 done:
2191 	free(remote_namespace);
2192 	free(local_refname);
2193 	return err;
2194 }
2195 
2196 static const struct got_error *
2197 update_wanted_ref(const char *refname, struct got_object_id *id,
2198     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2199 {
2200 	const struct got_error *err, *unlock_err;
2201 	char *remote_refname;
2202 	struct got_reference *ref;
2203 
2204 	if (strncmp("refs/", refname, 5) == 0)
2205 		refname += 5;
2206 
2207 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2208 	    remote_repo_name, refname) == -1)
2209 		return got_error_from_errno("asprintf");
2210 
2211 	err = got_ref_open(&ref, repo, remote_refname, 1);
2212 	if (err) {
2213 		if (err->code != GOT_ERR_NOT_REF)
2214 			goto done;
2215 		err = create_ref(remote_refname, id, verbosity, repo);
2216 	} else {
2217 		err = update_ref(ref, id, 0, verbosity, repo);
2218 		unlock_err = got_ref_unlock(ref);
2219 		if (unlock_err && err == NULL)
2220 			err = unlock_err;
2221 		got_ref_close(ref);
2222 	}
2223 done:
2224 	free(remote_refname);
2225 	return err;
2226 }
2227 
2228 static const struct got_error *
2229 delete_ref(struct got_repository *repo, struct got_reference *ref)
2230 {
2231 	const struct got_error *err = NULL;
2232 	struct got_object_id *id = NULL;
2233 	char *id_str = NULL;
2234 	const char *target;
2235 
2236 	if (got_ref_is_symbolic(ref)) {
2237 		target = got_ref_get_symref_target(ref);
2238 	} else {
2239 		err = got_ref_resolve(&id, repo, ref);
2240 		if (err)
2241 			goto done;
2242 		err = got_object_id_str(&id_str, id);
2243 		if (err)
2244 			goto done;
2245 		target = id_str;
2246 	}
2247 
2248 	err = got_ref_delete(ref, repo);
2249 	if (err)
2250 		goto done;
2251 
2252 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2253 done:
2254 	free(id);
2255 	free(id_str);
2256 	return err;
2257 }
2258 
2259 static const struct got_error *
2260 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2261 {
2262 	const struct got_error *err = NULL;
2263 	struct got_reflist_head refs;
2264 	struct got_reflist_entry *re;
2265 	char *prefix;
2266 
2267 	TAILQ_INIT(&refs);
2268 
2269 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2270 		err = got_error_from_errno("asprintf");
2271 		goto done;
2272 	}
2273 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2274 	if (err)
2275 		goto done;
2276 
2277 	TAILQ_FOREACH(re, &refs, entry)
2278 		delete_ref(repo, re->ref);
2279 done:
2280 	got_ref_list_free(&refs);
2281 	return err;
2282 }
2283 
2284 static const struct got_error *
2285 cmd_fetch(int argc, char *argv[])
2286 {
2287 	const struct got_error *error = NULL, *unlock_err;
2288 	char *cwd = NULL, *repo_path = NULL;
2289 	const char *remote_name;
2290 	char *proto = NULL, *host = NULL, *port = NULL;
2291 	char *repo_name = NULL, *server_path = NULL;
2292 	const struct got_remote_repo *remotes, *remote = NULL;
2293 	int nremotes;
2294 	char *id_str = NULL;
2295 	struct got_repository *repo = NULL;
2296 	struct got_worktree *worktree = NULL;
2297 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2298 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2299 	struct got_pathlist_entry *pe;
2300 	struct got_object_id *pack_hash = NULL;
2301 	int i, ch, fetchfd = -1, fetchstatus;
2302 	pid_t fetchpid = -1;
2303 	struct got_fetch_progress_arg fpa;
2304 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2305 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2306 	int *pack_fds = NULL;
2307 
2308 	TAILQ_INIT(&refs);
2309 	TAILQ_INIT(&symrefs);
2310 	TAILQ_INIT(&wanted_branches);
2311 	TAILQ_INIT(&wanted_refs);
2312 
2313 	while ((ch = getopt(argc, argv, "ab:dlr:tvqR:X")) != -1) {
2314 		switch (ch) {
2315 		case 'a':
2316 			fetch_all_branches = 1;
2317 			break;
2318 		case 'b':
2319 			error = got_pathlist_append(&wanted_branches,
2320 			    optarg, NULL);
2321 			if (error)
2322 				return error;
2323 			break;
2324 		case 'd':
2325 			delete_refs = 1;
2326 			break;
2327 		case 'l':
2328 			list_refs_only = 1;
2329 			break;
2330 		case 'r':
2331 			repo_path = realpath(optarg, NULL);
2332 			if (repo_path == NULL)
2333 				return got_error_from_errno2("realpath",
2334 				    optarg);
2335 			got_path_strip_trailing_slashes(repo_path);
2336 			break;
2337 		case 't':
2338 			replace_tags = 1;
2339 			break;
2340 		case 'v':
2341 			if (verbosity < 0)
2342 				verbosity = 0;
2343 			else if (verbosity < 3)
2344 				verbosity++;
2345 			break;
2346 		case 'q':
2347 			verbosity = -1;
2348 			break;
2349 		case 'R':
2350 			error = got_pathlist_append(&wanted_refs,
2351 			    optarg, NULL);
2352 			if (error)
2353 				return error;
2354 			break;
2355 		case 'X':
2356 			delete_remote = 1;
2357 			break;
2358 		default:
2359 			usage_fetch();
2360 			break;
2361 		}
2362 	}
2363 	argc -= optind;
2364 	argv += optind;
2365 
2366 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2367 		option_conflict('a', 'b');
2368 	if (list_refs_only) {
2369 		if (!TAILQ_EMPTY(&wanted_branches))
2370 			option_conflict('l', 'b');
2371 		if (fetch_all_branches)
2372 			option_conflict('l', 'a');
2373 		if (delete_refs)
2374 			option_conflict('l', 'd');
2375 		if (delete_remote)
2376 			option_conflict('l', 'X');
2377 	}
2378 	if (delete_remote) {
2379 		if (fetch_all_branches)
2380 			option_conflict('X', 'a');
2381 		if (!TAILQ_EMPTY(&wanted_branches))
2382 			option_conflict('X', 'b');
2383 		if (delete_refs)
2384 			option_conflict('X', 'd');
2385 		if (replace_tags)
2386 			option_conflict('X', 't');
2387 		if (!TAILQ_EMPTY(&wanted_refs))
2388 			option_conflict('X', 'R');
2389 	}
2390 
2391 	if (argc == 0) {
2392 		if (delete_remote)
2393 			errx(1, "-X option requires a remote name");
2394 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2395 	} else if (argc == 1)
2396 		remote_name = argv[0];
2397 	else
2398 		usage_fetch();
2399 
2400 	cwd = getcwd(NULL, 0);
2401 	if (cwd == NULL) {
2402 		error = got_error_from_errno("getcwd");
2403 		goto done;
2404 	}
2405 
2406 	error = got_repo_pack_fds_open(&pack_fds);
2407 	if (error != NULL)
2408 		goto done;
2409 
2410 	if (repo_path == NULL) {
2411 		error = got_worktree_open(&worktree, cwd);
2412 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2413 			goto done;
2414 		else
2415 			error = NULL;
2416 		if (worktree) {
2417 			repo_path =
2418 			    strdup(got_worktree_get_repo_path(worktree));
2419 			if (repo_path == NULL)
2420 				error = got_error_from_errno("strdup");
2421 			if (error)
2422 				goto done;
2423 		} else {
2424 			repo_path = strdup(cwd);
2425 			if (repo_path == NULL) {
2426 				error = got_error_from_errno("strdup");
2427 				goto done;
2428 			}
2429 		}
2430 	}
2431 
2432 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2433 	if (error)
2434 		goto done;
2435 
2436 	if (delete_remote) {
2437 		error = delete_refs_for_remote(repo, remote_name);
2438 		goto done; /* nothing else to do */
2439 	}
2440 
2441 	if (worktree) {
2442 		worktree_conf = got_worktree_get_gotconfig(worktree);
2443 		if (worktree_conf) {
2444 			got_gotconfig_get_remotes(&nremotes, &remotes,
2445 			    worktree_conf);
2446 			for (i = 0; i < nremotes; i++) {
2447 				if (strcmp(remotes[i].name, remote_name) == 0) {
2448 					remote = &remotes[i];
2449 					break;
2450 				}
2451 			}
2452 		}
2453 	}
2454 	if (remote == NULL) {
2455 		repo_conf = got_repo_get_gotconfig(repo);
2456 		if (repo_conf) {
2457 			got_gotconfig_get_remotes(&nremotes, &remotes,
2458 			    repo_conf);
2459 			for (i = 0; i < nremotes; i++) {
2460 				if (strcmp(remotes[i].name, remote_name) == 0) {
2461 					remote = &remotes[i];
2462 					break;
2463 				}
2464 			}
2465 		}
2466 	}
2467 	if (remote == NULL) {
2468 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2469 		for (i = 0; i < nremotes; i++) {
2470 			if (strcmp(remotes[i].name, remote_name) == 0) {
2471 				remote = &remotes[i];
2472 				break;
2473 			}
2474 		}
2475 	}
2476 	if (remote == NULL) {
2477 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2478 		goto done;
2479 	}
2480 
2481 	if (TAILQ_EMPTY(&wanted_branches)) {
2482 		if (!fetch_all_branches)
2483 			fetch_all_branches = remote->fetch_all_branches;
2484 		for (i = 0; i < remote->nfetch_branches; i++) {
2485 			got_pathlist_append(&wanted_branches,
2486 			    remote->fetch_branches[i], NULL);
2487 		}
2488 	}
2489 	if (TAILQ_EMPTY(&wanted_refs)) {
2490 		for (i = 0; i < remote->nfetch_refs; i++) {
2491 			got_pathlist_append(&wanted_refs,
2492 			    remote->fetch_refs[i], NULL);
2493 		}
2494 	}
2495 
2496 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2497 	    &repo_name, remote->fetch_url);
2498 	if (error)
2499 		goto done;
2500 
2501 	if (strcmp(proto, "git") == 0) {
2502 #ifndef PROFILE
2503 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2504 		    "sendfd dns inet unveil", NULL) == -1)
2505 			err(1, "pledge");
2506 #endif
2507 	} else if (strcmp(proto, "git+ssh") == 0 ||
2508 	    strcmp(proto, "ssh") == 0) {
2509 #ifndef PROFILE
2510 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2511 		    "sendfd unveil", NULL) == -1)
2512 			err(1, "pledge");
2513 #endif
2514 	} else if (strcmp(proto, "http") == 0 ||
2515 	    strcmp(proto, "git+http") == 0) {
2516 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2517 		goto done;
2518 	} else {
2519 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2520 		goto done;
2521 	}
2522 
2523 	error = got_dial_apply_unveil(proto);
2524 	if (error)
2525 		goto done;
2526 
2527 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2528 	if (error)
2529 		goto done;
2530 
2531 	if (verbosity >= 0)
2532 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
2533 		    port ? ":" : "", port ? port : "");
2534 
2535 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2536 	    server_path, verbosity);
2537 	if (error)
2538 		goto done;
2539 
2540 	fpa.last_scaled_size[0] = '\0';
2541 	fpa.last_p_indexed = -1;
2542 	fpa.last_p_resolved = -1;
2543 	fpa.verbosity = verbosity;
2544 	fpa.repo = repo;
2545 	fpa.create_configs = 0;
2546 	fpa.configs_created = 0;
2547 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2548 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2549 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2550 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2551 	    fetch_progress, &fpa);
2552 	if (error)
2553 		goto done;
2554 
2555 	if (list_refs_only) {
2556 		error = list_remote_refs(&symrefs, &refs);
2557 		goto done;
2558 	}
2559 
2560 	if (pack_hash == NULL) {
2561 		if (verbosity >= 0)
2562 			printf("Already up-to-date\n");
2563 	} else if (verbosity >= 0) {
2564 		error = got_object_id_str(&id_str, pack_hash);
2565 		if (error)
2566 			goto done;
2567 		printf("\nFetched %s.pack\n", id_str);
2568 		free(id_str);
2569 		id_str = NULL;
2570 	}
2571 
2572 	/* Update references provided with the pack file. */
2573 	TAILQ_FOREACH(pe, &refs, entry) {
2574 		const char *refname = pe->path;
2575 		struct got_object_id *id = pe->data;
2576 		struct got_reference *ref;
2577 		char *remote_refname;
2578 
2579 		if (is_wanted_ref(&wanted_refs, refname) &&
2580 		    !remote->mirror_references) {
2581 			error = update_wanted_ref(refname, id,
2582 			    remote->name, verbosity, repo);
2583 			if (error)
2584 				goto done;
2585 			continue;
2586 		}
2587 
2588 		if (remote->mirror_references ||
2589 		    strncmp("refs/tags/", refname, 10) == 0) {
2590 			error = got_ref_open(&ref, repo, refname, 1);
2591 			if (error) {
2592 				if (error->code != GOT_ERR_NOT_REF)
2593 					goto done;
2594 				error = create_ref(refname, id, verbosity,
2595 				    repo);
2596 				if (error)
2597 					goto done;
2598 			} else {
2599 				error = update_ref(ref, id, replace_tags,
2600 				    verbosity, repo);
2601 				unlock_err = got_ref_unlock(ref);
2602 				if (unlock_err && error == NULL)
2603 					error = unlock_err;
2604 				got_ref_close(ref);
2605 				if (error)
2606 					goto done;
2607 			}
2608 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2609 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2610 			    remote_name, refname + 11) == -1) {
2611 				error = got_error_from_errno("asprintf");
2612 				goto done;
2613 			}
2614 
2615 			error = got_ref_open(&ref, repo, remote_refname, 1);
2616 			if (error) {
2617 				if (error->code != GOT_ERR_NOT_REF)
2618 					goto done;
2619 				error = create_ref(remote_refname, id, 
2620 				    verbosity, repo);
2621 				if (error)
2622 					goto done;
2623 			} else {
2624 				error = update_ref(ref, id, replace_tags,
2625 				    verbosity, repo);
2626 				unlock_err = got_ref_unlock(ref);
2627 				if (unlock_err && error == NULL)
2628 					error = unlock_err;
2629 				got_ref_close(ref);
2630 				if (error)
2631 					goto done;
2632 			}
2633 
2634 			/* Also create a local branch if none exists yet. */
2635 			error = got_ref_open(&ref, repo, refname, 1);
2636 			if (error) {
2637 				if (error->code != GOT_ERR_NOT_REF)
2638 					goto done;
2639 				error = create_ref(refname, id, verbosity,
2640 				    repo);
2641 				if (error)
2642 					goto done;
2643 			} else {
2644 				unlock_err = got_ref_unlock(ref);
2645 				if (unlock_err && error == NULL)
2646 					error = unlock_err;
2647 				got_ref_close(ref);
2648 			}
2649 		}
2650 	}
2651 	if (delete_refs) {
2652 		error = delete_missing_refs(&refs, &symrefs, remote,
2653 		    verbosity, repo);
2654 		if (error)
2655 			goto done;
2656 	}
2657 
2658 	if (!remote->mirror_references) {
2659 		/* Update remote HEAD reference if the server provided one. */
2660 		TAILQ_FOREACH(pe, &symrefs, entry) {
2661 			struct got_reference *target_ref;
2662 			const char *refname = pe->path;
2663 			const char *target = pe->data;
2664 			char *remote_refname = NULL, *remote_target = NULL;
2665 
2666 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2667 				continue;
2668 
2669 			if (strncmp("refs/heads/", target, 11) != 0)
2670 				continue;
2671 
2672 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2673 			    remote->name, refname) == -1) {
2674 				error = got_error_from_errno("asprintf");
2675 				goto done;
2676 			}
2677 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2678 			    remote->name, target + 11) == -1) {
2679 				error = got_error_from_errno("asprintf");
2680 				free(remote_refname);
2681 				goto done;
2682 			}
2683 
2684 			error = got_ref_open(&target_ref, repo, remote_target,
2685 			    0);
2686 			if (error) {
2687 				free(remote_refname);
2688 				free(remote_target);
2689 				if (error->code == GOT_ERR_NOT_REF) {
2690 					error = NULL;
2691 					continue;
2692 				}
2693 				goto done;
2694 			}
2695 			error = update_symref(remote_refname, target_ref,
2696 			    verbosity, repo);
2697 			free(remote_refname);
2698 			free(remote_target);
2699 			got_ref_close(target_ref);
2700 			if (error)
2701 				goto done;
2702 		}
2703 	}
2704 done:
2705 	if (fetchpid > 0) {
2706 		if (kill(fetchpid, SIGTERM) == -1)
2707 			error = got_error_from_errno("kill");
2708 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2709 			error = got_error_from_errno("waitpid");
2710 	}
2711 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2712 		error = got_error_from_errno("close");
2713 	if (repo) {
2714 		const struct got_error *close_err = got_repo_close(repo);
2715 		if (error == NULL)
2716 			error = close_err;
2717 	}
2718 	if (worktree)
2719 		got_worktree_close(worktree);
2720 	if (pack_fds) {
2721 		const struct got_error *pack_err =
2722 		    got_repo_pack_fds_close(pack_fds);
2723 		if (error == NULL)
2724 			error = pack_err;
2725 	}
2726 	TAILQ_FOREACH(pe, &refs, entry) {
2727 		free((void *)pe->path);
2728 		free(pe->data);
2729 	}
2730 	got_pathlist_free(&refs);
2731 	TAILQ_FOREACH(pe, &symrefs, entry) {
2732 		free((void *)pe->path);
2733 		free(pe->data);
2734 	}
2735 	got_pathlist_free(&symrefs);
2736 	got_pathlist_free(&wanted_branches);
2737 	got_pathlist_free(&wanted_refs);
2738 	free(id_str);
2739 	free(cwd);
2740 	free(repo_path);
2741 	free(pack_hash);
2742 	free(proto);
2743 	free(host);
2744 	free(port);
2745 	free(server_path);
2746 	free(repo_name);
2747 	return error;
2748 }
2749 
2750 
2751 __dead static void
2752 usage_checkout(void)
2753 {
2754 	fprintf(stderr, "usage: %s checkout [-E] [-b branch] [-c commit] "
2755 	    "[-p prefix] [-q] repository-path [worktree-path]\n",
2756 	    getprogname());
2757 	exit(1);
2758 }
2759 
2760 static void
2761 show_worktree_base_ref_warning(void)
2762 {
2763 	fprintf(stderr, "%s: warning: could not create a reference "
2764 	    "to the work tree's base commit; the commit could be "
2765 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2766 	    "repository writable and running 'got update' will prevent this\n",
2767 	    getprogname());
2768 }
2769 
2770 struct got_checkout_progress_arg {
2771 	const char *worktree_path;
2772 	int had_base_commit_ref_error;
2773 	int verbosity;
2774 };
2775 
2776 static const struct got_error *
2777 checkout_progress(void *arg, unsigned char status, const char *path)
2778 {
2779 	struct got_checkout_progress_arg *a = arg;
2780 
2781 	/* Base commit bump happens silently. */
2782 	if (status == GOT_STATUS_BUMP_BASE)
2783 		return NULL;
2784 
2785 	if (status == GOT_STATUS_BASE_REF_ERR) {
2786 		a->had_base_commit_ref_error = 1;
2787 		return NULL;
2788 	}
2789 
2790 	while (path[0] == '/')
2791 		path++;
2792 
2793 	if (a->verbosity >= 0)
2794 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2795 
2796 	return NULL;
2797 }
2798 
2799 static const struct got_error *
2800 check_cancelled(void *arg)
2801 {
2802 	if (sigint_received || sigpipe_received)
2803 		return got_error(GOT_ERR_CANCELLED);
2804 	return NULL;
2805 }
2806 
2807 static const struct got_error *
2808 check_linear_ancestry(struct got_object_id *commit_id,
2809     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2810     struct got_repository *repo)
2811 {
2812 	const struct got_error *err = NULL;
2813 	struct got_object_id *yca_id;
2814 
2815 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2816 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2817 	if (err)
2818 		return err;
2819 
2820 	if (yca_id == NULL)
2821 		return got_error(GOT_ERR_ANCESTRY);
2822 
2823 	/*
2824 	 * Require a straight line of history between the target commit
2825 	 * and the work tree's base commit.
2826 	 *
2827 	 * Non-linear situations such as this require a rebase:
2828 	 *
2829 	 * (commit) D       F (base_commit)
2830 	 *           \     /
2831 	 *            C   E
2832 	 *             \ /
2833 	 *              B (yca)
2834 	 *              |
2835 	 *              A
2836 	 *
2837 	 * 'got update' only handles linear cases:
2838 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2839 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2840 	 */
2841 	if (allow_forwards_in_time_only) {
2842 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2843 		return got_error(GOT_ERR_ANCESTRY);
2844 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2845 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2846 		return got_error(GOT_ERR_ANCESTRY);
2847 
2848 	free(yca_id);
2849 	return NULL;
2850 }
2851 
2852 static const struct got_error *
2853 check_same_branch(struct got_object_id *commit_id,
2854     struct got_reference *head_ref, struct got_object_id *yca_id,
2855     struct got_repository *repo)
2856 {
2857 	const struct got_error *err = NULL;
2858 	struct got_commit_graph *graph = NULL;
2859 	struct got_object_id *head_commit_id = NULL;
2860 	int is_same_branch = 0;
2861 
2862 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2863 	if (err)
2864 		goto done;
2865 
2866 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2867 		is_same_branch = 1;
2868 		goto done;
2869 	}
2870 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2871 		is_same_branch = 1;
2872 		goto done;
2873 	}
2874 
2875 	err = got_commit_graph_open(&graph, "/", 1);
2876 	if (err)
2877 		goto done;
2878 
2879 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2880 	    check_cancelled, NULL);
2881 	if (err)
2882 		goto done;
2883 
2884 	for (;;) {
2885 		struct got_object_id *id;
2886 		err = got_commit_graph_iter_next(&id, graph, repo,
2887 		    check_cancelled, NULL);
2888 		if (err) {
2889 			if (err->code == GOT_ERR_ITER_COMPLETED)
2890 				err = NULL;
2891 			break;
2892 		}
2893 
2894 		if (id) {
2895 			if (yca_id && got_object_id_cmp(id, yca_id) == 0)
2896 				break;
2897 			if (got_object_id_cmp(id, commit_id) == 0) {
2898 				is_same_branch = 1;
2899 				break;
2900 			}
2901 		}
2902 	}
2903 done:
2904 	if (graph)
2905 		got_commit_graph_close(graph);
2906 	free(head_commit_id);
2907 	if (!err && !is_same_branch)
2908 		err = got_error(GOT_ERR_ANCESTRY);
2909 	return err;
2910 }
2911 
2912 static const struct got_error *
2913 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2914 {
2915 	static char msg[512];
2916 	const char *branch_name;
2917 
2918 	if (got_ref_is_symbolic(ref))
2919 		branch_name = got_ref_get_symref_target(ref);
2920 	else
2921 		branch_name = got_ref_get_name(ref);
2922 
2923 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2924 		branch_name += 11;
2925 
2926 	snprintf(msg, sizeof(msg),
2927 	    "target commit is not contained in branch '%s'; "
2928 	    "the branch to use must be specified with -b; "
2929 	    "if necessary a new branch can be created for "
2930 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2931 	    branch_name, commit_id_str);
2932 
2933 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2934 }
2935 
2936 static const struct got_error *
2937 cmd_checkout(int argc, char *argv[])
2938 {
2939 	const struct got_error *error = NULL;
2940 	struct got_repository *repo = NULL;
2941 	struct got_reference *head_ref = NULL, *ref = NULL;
2942 	struct got_worktree *worktree = NULL;
2943 	char *repo_path = NULL;
2944 	char *worktree_path = NULL;
2945 	const char *path_prefix = "";
2946 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2947 	char *commit_id_str = NULL;
2948 	struct got_object_id *commit_id = NULL;
2949 	char *cwd = NULL;
2950 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2951 	struct got_pathlist_head paths;
2952 	struct got_checkout_progress_arg cpa;
2953 	int *pack_fds = NULL;
2954 
2955 	TAILQ_INIT(&paths);
2956 
2957 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
2958 		switch (ch) {
2959 		case 'b':
2960 			branch_name = optarg;
2961 			break;
2962 		case 'c':
2963 			commit_id_str = strdup(optarg);
2964 			if (commit_id_str == NULL)
2965 				return got_error_from_errno("strdup");
2966 			break;
2967 		case 'E':
2968 			allow_nonempty = 1;
2969 			break;
2970 		case 'p':
2971 			path_prefix = optarg;
2972 			break;
2973 		case 'q':
2974 			verbosity = -1;
2975 			break;
2976 		default:
2977 			usage_checkout();
2978 			/* NOTREACHED */
2979 		}
2980 	}
2981 
2982 	argc -= optind;
2983 	argv += optind;
2984 
2985 #ifndef PROFILE
2986 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2987 	    "unveil", NULL) == -1)
2988 		err(1, "pledge");
2989 #endif
2990 	if (argc == 1) {
2991 		char *base, *dotgit;
2992 		const char *path;
2993 		repo_path = realpath(argv[0], NULL);
2994 		if (repo_path == NULL)
2995 			return got_error_from_errno2("realpath", argv[0]);
2996 		cwd = getcwd(NULL, 0);
2997 		if (cwd == NULL) {
2998 			error = got_error_from_errno("getcwd");
2999 			goto done;
3000 		}
3001 		if (path_prefix[0])
3002 			path = path_prefix;
3003 		else
3004 			path = repo_path;
3005 		error = got_path_basename(&base, path);
3006 		if (error)
3007 			goto done;
3008 		dotgit = strstr(base, ".git");
3009 		if (dotgit)
3010 			*dotgit = '\0';
3011 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
3012 			error = got_error_from_errno("asprintf");
3013 			free(base);
3014 			goto done;
3015 		}
3016 		free(base);
3017 	} else if (argc == 2) {
3018 		repo_path = realpath(argv[0], NULL);
3019 		if (repo_path == NULL) {
3020 			error = got_error_from_errno2("realpath", argv[0]);
3021 			goto done;
3022 		}
3023 		worktree_path = realpath(argv[1], NULL);
3024 		if (worktree_path == NULL) {
3025 			if (errno != ENOENT) {
3026 				error = got_error_from_errno2("realpath",
3027 				    argv[1]);
3028 				goto done;
3029 			}
3030 			worktree_path = strdup(argv[1]);
3031 			if (worktree_path == NULL) {
3032 				error = got_error_from_errno("strdup");
3033 				goto done;
3034 			}
3035 		}
3036 	} else
3037 		usage_checkout();
3038 
3039 	got_path_strip_trailing_slashes(repo_path);
3040 	got_path_strip_trailing_slashes(worktree_path);
3041 
3042 	error = got_repo_pack_fds_open(&pack_fds);
3043 	if (error != NULL)
3044 		goto done;
3045 
3046 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
3047 	if (error != NULL)
3048 		goto done;
3049 
3050 	/* Pre-create work tree path for unveil(2) */
3051 	error = got_path_mkdir(worktree_path);
3052 	if (error) {
3053 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
3054 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3055 			goto done;
3056 		if (!allow_nonempty &&
3057 		    !got_path_dir_is_empty(worktree_path)) {
3058 			error = got_error_path(worktree_path,
3059 			    GOT_ERR_DIR_NOT_EMPTY);
3060 			goto done;
3061 		}
3062 	}
3063 
3064 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
3065 	if (error)
3066 		goto done;
3067 
3068 	error = got_ref_open(&head_ref, repo, branch_name, 0);
3069 	if (error != NULL)
3070 		goto done;
3071 
3072 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
3073 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3074 		goto done;
3075 
3076 	error = got_worktree_open(&worktree, worktree_path);
3077 	if (error != NULL)
3078 		goto done;
3079 
3080 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
3081 	    path_prefix);
3082 	if (error != NULL)
3083 		goto done;
3084 	if (!same_path_prefix) {
3085 		error = got_error(GOT_ERR_PATH_PREFIX);
3086 		goto done;
3087 	}
3088 
3089 	if (commit_id_str) {
3090 		struct got_reflist_head refs;
3091 		TAILQ_INIT(&refs);
3092 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3093 		    NULL);
3094 		if (error)
3095 			goto done;
3096 		error = got_repo_match_object_id(&commit_id, NULL,
3097 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3098 		got_ref_list_free(&refs);
3099 		if (error)
3100 			goto done;
3101 		error = check_linear_ancestry(commit_id,
3102 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3103 		if (error != NULL) {
3104 			if (error->code == GOT_ERR_ANCESTRY) {
3105 				error = checkout_ancestry_error(
3106 				    head_ref, commit_id_str);
3107 			}
3108 			goto done;
3109 		}
3110 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3111 		if (error) {
3112 			if (error->code == GOT_ERR_ANCESTRY) {
3113 				error = checkout_ancestry_error(
3114 				    head_ref, commit_id_str);
3115 			}
3116 			goto done;
3117 		}
3118 		error = got_worktree_set_base_commit_id(worktree, repo,
3119 		    commit_id);
3120 		if (error)
3121 			goto done;
3122 		/* Expand potentially abbreviated commit ID string. */
3123 		free(commit_id_str);
3124 		error = got_object_id_str(&commit_id_str, commit_id);
3125 		if (error)
3126 			goto done;
3127 	} else {
3128 		commit_id = got_object_id_dup(
3129 		    got_worktree_get_base_commit_id(worktree));
3130 		if (commit_id == NULL) {
3131 			error = got_error_from_errno("got_object_id_dup");
3132 			goto done;
3133 		}
3134 		error = got_object_id_str(&commit_id_str, commit_id);
3135 		if (error)
3136 			goto done;
3137 	}
3138 
3139 	error = got_pathlist_append(&paths, "", NULL);
3140 	if (error)
3141 		goto done;
3142 	cpa.worktree_path = worktree_path;
3143 	cpa.had_base_commit_ref_error = 0;
3144 	cpa.verbosity = verbosity;
3145 	error = got_worktree_checkout_files(worktree, &paths, repo,
3146 	    checkout_progress, &cpa, check_cancelled, NULL);
3147 	if (error != NULL)
3148 		goto done;
3149 
3150 	if (got_ref_is_symbolic(head_ref)) {
3151 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3152 		if (error)
3153 			goto done;
3154 		refname = got_ref_get_name(ref);
3155 	} else
3156 		refname = got_ref_get_name(head_ref);
3157 	printf("Checked out %s: %s\n", refname, commit_id_str);
3158 	printf("Now shut up and hack\n");
3159 	if (cpa.had_base_commit_ref_error)
3160 		show_worktree_base_ref_warning();
3161 done:
3162 	if (pack_fds) {
3163 		const struct got_error *pack_err =
3164 		    got_repo_pack_fds_close(pack_fds);
3165 		if (error == NULL)
3166 			error = pack_err;
3167 	}
3168 	if (head_ref)
3169 		got_ref_close(head_ref);
3170 	if (ref)
3171 		got_ref_close(ref);
3172 	got_pathlist_free(&paths);
3173 	free(commit_id_str);
3174 	free(commit_id);
3175 	free(repo_path);
3176 	free(worktree_path);
3177 	free(cwd);
3178 	return error;
3179 }
3180 
3181 struct got_update_progress_arg {
3182 	int did_something;
3183 	int conflicts;
3184 	int obstructed;
3185 	int not_updated;
3186 	int missing;
3187 	int not_deleted;
3188 	int unversioned;
3189 	int verbosity;
3190 };
3191 
3192 static void
3193 print_update_progress_stats(struct got_update_progress_arg *upa)
3194 {
3195 	if (!upa->did_something)
3196 		return;
3197 
3198 	if (upa->conflicts > 0)
3199 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3200 	if (upa->obstructed > 0)
3201 		printf("File paths obstructed by a non-regular file: %d\n",
3202 		    upa->obstructed);
3203 	if (upa->not_updated > 0)
3204 		printf("Files not updated because of existing merge "
3205 		    "conflicts: %d\n", upa->not_updated);
3206 }
3207 
3208 /*
3209  * The meaning of some status codes differs between merge-style operations and
3210  * update operations. For example, the ! status code means "file was missing"
3211  * if changes were merged into the work tree, and "missing file was restored"
3212  * if the work tree was updated. This function should be used by any operation
3213  * which merges changes into the work tree without updating the work tree.
3214  */
3215 static void
3216 print_merge_progress_stats(struct got_update_progress_arg *upa)
3217 {
3218 	if (!upa->did_something)
3219 		return;
3220 
3221 	if (upa->conflicts > 0)
3222 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3223 	if (upa->obstructed > 0)
3224 		printf("File paths obstructed by a non-regular file: %d\n",
3225 		    upa->obstructed);
3226 	if (upa->missing > 0)
3227 		printf("Files which had incoming changes but could not be "
3228 		    "found in the work tree: %d\n", upa->missing);
3229 	if (upa->not_deleted > 0)
3230 		printf("Files not deleted due to differences in deleted "
3231 		    "content: %d\n", upa->not_deleted);
3232 	if (upa->unversioned > 0)
3233 		printf("Files not merged because an unversioned file was "
3234 		    "found in the work tree: %d\n", upa->unversioned);
3235 }
3236 
3237 __dead static void
3238 usage_update(void)
3239 {
3240 	fprintf(stderr, "usage: %s update [-b branch] [-c commit] [-q] "
3241 	    "[path ...]\n",
3242 	    getprogname());
3243 	exit(1);
3244 }
3245 
3246 static const struct got_error *
3247 update_progress(void *arg, unsigned char status, const char *path)
3248 {
3249 	struct got_update_progress_arg *upa = arg;
3250 
3251 	if (status == GOT_STATUS_EXISTS ||
3252 	    status == GOT_STATUS_BASE_REF_ERR)
3253 		return NULL;
3254 
3255 	upa->did_something = 1;
3256 
3257 	/* Base commit bump happens silently. */
3258 	if (status == GOT_STATUS_BUMP_BASE)
3259 		return NULL;
3260 
3261 	if (status == GOT_STATUS_CONFLICT)
3262 		upa->conflicts++;
3263 	if (status == GOT_STATUS_OBSTRUCTED)
3264 		upa->obstructed++;
3265 	if (status == GOT_STATUS_CANNOT_UPDATE)
3266 		upa->not_updated++;
3267 	if (status == GOT_STATUS_MISSING)
3268 		upa->missing++;
3269 	if (status == GOT_STATUS_CANNOT_DELETE)
3270 		upa->not_deleted++;
3271 	if (status == GOT_STATUS_UNVERSIONED)
3272 		upa->unversioned++;
3273 
3274 	while (path[0] == '/')
3275 		path++;
3276 	if (upa->verbosity >= 0)
3277 		printf("%c  %s\n", status, path);
3278 
3279 	return NULL;
3280 }
3281 
3282 static const struct got_error *
3283 switch_head_ref(struct got_reference *head_ref,
3284     struct got_object_id *commit_id, struct got_worktree *worktree,
3285     struct got_repository *repo)
3286 {
3287 	const struct got_error *err = NULL;
3288 	char *base_id_str;
3289 	int ref_has_moved = 0;
3290 
3291 	/* Trivial case: switching between two different references. */
3292 	if (strcmp(got_ref_get_name(head_ref),
3293 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3294 		printf("Switching work tree from %s to %s\n",
3295 		    got_worktree_get_head_ref_name(worktree),
3296 		    got_ref_get_name(head_ref));
3297 		return got_worktree_set_head_ref(worktree, head_ref);
3298 	}
3299 
3300 	err = check_linear_ancestry(commit_id,
3301 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3302 	if (err) {
3303 		if (err->code != GOT_ERR_ANCESTRY)
3304 			return err;
3305 		ref_has_moved = 1;
3306 	}
3307 	if (!ref_has_moved)
3308 		return NULL;
3309 
3310 	/* Switching to a rebased branch with the same reference name. */
3311 	err = got_object_id_str(&base_id_str,
3312 	    got_worktree_get_base_commit_id(worktree));
3313 	if (err)
3314 		return err;
3315 	printf("Reference %s now points at a different branch\n",
3316 	    got_worktree_get_head_ref_name(worktree));
3317 	printf("Switching work tree from %s to %s\n", base_id_str,
3318 	    got_worktree_get_head_ref_name(worktree));
3319 	return NULL;
3320 }
3321 
3322 static const struct got_error *
3323 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3324 {
3325 	const struct got_error *err;
3326 	int in_progress;
3327 
3328 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3329 	if (err)
3330 		return err;
3331 	if (in_progress)
3332 		return got_error(GOT_ERR_REBASING);
3333 
3334 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3335 	if (err)
3336 		return err;
3337 	if (in_progress)
3338 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3339 
3340 	return NULL;
3341 }
3342 
3343 static const struct got_error *
3344 check_merge_in_progress(struct got_worktree *worktree,
3345     struct got_repository *repo)
3346 {
3347 	const struct got_error *err;
3348 	int in_progress;
3349 
3350 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3351 	if (err)
3352 		return err;
3353 	if (in_progress)
3354 		return got_error(GOT_ERR_MERGE_BUSY);
3355 
3356 	return NULL;
3357 }
3358 
3359 static const struct got_error *
3360 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3361     char *argv[], struct got_worktree *worktree)
3362 {
3363 	const struct got_error *err = NULL;
3364 	char *path;
3365 	struct got_pathlist_entry *new;
3366 	int i;
3367 
3368 	if (argc == 0) {
3369 		path = strdup("");
3370 		if (path == NULL)
3371 			return got_error_from_errno("strdup");
3372 		return got_pathlist_append(paths, path, NULL);
3373 	}
3374 
3375 	for (i = 0; i < argc; i++) {
3376 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3377 		if (err)
3378 			break;
3379 		err = got_pathlist_insert(&new, paths, path, NULL);
3380 		if (err || new == NULL /* duplicate */) {
3381 			free(path);
3382 			if (err)
3383 				break;
3384 		}
3385 	}
3386 
3387 	return err;
3388 }
3389 
3390 static const struct got_error *
3391 wrap_not_worktree_error(const struct got_error *orig_err,
3392     const char *cmdname, const char *path)
3393 {
3394 	const struct got_error *err;
3395 	struct got_repository *repo;
3396 	static char msg[512];
3397 	int *pack_fds = NULL;
3398 
3399 	err = got_repo_pack_fds_open(&pack_fds);
3400 	if (err)
3401 		return err;
3402 
3403 	err = got_repo_open(&repo, path, NULL, pack_fds);
3404 	if (err)
3405 		return orig_err;
3406 
3407 	snprintf(msg, sizeof(msg),
3408 	    "'got %s' needs a work tree in addition to a git repository\n"
3409 	    "Work trees can be checked out from this Git repository with "
3410 	    "'got checkout'.\n"
3411 	    "The got(1) manual page contains more information.", cmdname);
3412 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3413 	got_repo_close(repo);
3414 	if (pack_fds) {
3415 		const struct got_error *pack_err =
3416 		    got_repo_pack_fds_close(pack_fds);
3417 		if (err == NULL)
3418 			err = pack_err;
3419 	}
3420 	return err;
3421 }
3422 
3423 static const struct got_error *
3424 cmd_update(int argc, char *argv[])
3425 {
3426 	const struct got_error *error = NULL;
3427 	struct got_repository *repo = NULL;
3428 	struct got_worktree *worktree = NULL;
3429 	char *worktree_path = NULL;
3430 	struct got_object_id *commit_id = NULL;
3431 	char *commit_id_str = NULL;
3432 	const char *branch_name = NULL;
3433 	struct got_reference *head_ref = NULL;
3434 	struct got_pathlist_head paths;
3435 	struct got_pathlist_entry *pe;
3436 	int ch, verbosity = 0;
3437 	struct got_update_progress_arg upa;
3438 	int *pack_fds = NULL;
3439 
3440 	TAILQ_INIT(&paths);
3441 
3442 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3443 		switch (ch) {
3444 		case 'b':
3445 			branch_name = optarg;
3446 			break;
3447 		case 'c':
3448 			commit_id_str = strdup(optarg);
3449 			if (commit_id_str == NULL)
3450 				return got_error_from_errno("strdup");
3451 			break;
3452 		case 'q':
3453 			verbosity = -1;
3454 			break;
3455 		default:
3456 			usage_update();
3457 			/* NOTREACHED */
3458 		}
3459 	}
3460 
3461 	argc -= optind;
3462 	argv += optind;
3463 
3464 #ifndef PROFILE
3465 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3466 	    "unveil", NULL) == -1)
3467 		err(1, "pledge");
3468 #endif
3469 	worktree_path = getcwd(NULL, 0);
3470 	if (worktree_path == NULL) {
3471 		error = got_error_from_errno("getcwd");
3472 		goto done;
3473 	}
3474 
3475 	error = got_repo_pack_fds_open(&pack_fds);
3476 	if (error != NULL)
3477 		goto done;
3478 
3479 	error = got_worktree_open(&worktree, worktree_path);
3480 	if (error) {
3481 		if (error->code == GOT_ERR_NOT_WORKTREE)
3482 			error = wrap_not_worktree_error(error, "update",
3483 			    worktree_path);
3484 		goto done;
3485 	}
3486 
3487 	error = check_rebase_or_histedit_in_progress(worktree);
3488 	if (error)
3489 		goto done;
3490 
3491 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3492 	    NULL, pack_fds);
3493 	if (error != NULL)
3494 		goto done;
3495 
3496 	error = apply_unveil(got_repo_get_path(repo), 0,
3497 	    got_worktree_get_root_path(worktree));
3498 	if (error)
3499 		goto done;
3500 
3501 	error = check_merge_in_progress(worktree, repo);
3502 	if (error)
3503 		goto done;
3504 
3505 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3506 	if (error)
3507 		goto done;
3508 
3509 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3510 	    got_worktree_get_head_ref_name(worktree), 0);
3511 	if (error != NULL)
3512 		goto done;
3513 	if (commit_id_str == NULL) {
3514 		error = got_ref_resolve(&commit_id, repo, head_ref);
3515 		if (error != NULL)
3516 			goto done;
3517 		error = got_object_id_str(&commit_id_str, commit_id);
3518 		if (error != NULL)
3519 			goto done;
3520 	} else {
3521 		struct got_reflist_head refs;
3522 		TAILQ_INIT(&refs);
3523 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3524 		    NULL);
3525 		if (error)
3526 			goto done;
3527 		error = got_repo_match_object_id(&commit_id, NULL,
3528 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3529 		got_ref_list_free(&refs);
3530 		free(commit_id_str);
3531 		commit_id_str = NULL;
3532 		if (error)
3533 			goto done;
3534 		error = got_object_id_str(&commit_id_str, commit_id);
3535 		if (error)
3536 			goto done;
3537 	}
3538 
3539 	if (branch_name) {
3540 		struct got_object_id *head_commit_id;
3541 		TAILQ_FOREACH(pe, &paths, entry) {
3542 			if (pe->path_len == 0)
3543 				continue;
3544 			error = got_error_msg(GOT_ERR_BAD_PATH,
3545 			    "switching between branches requires that "
3546 			    "the entire work tree gets updated");
3547 			goto done;
3548 		}
3549 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3550 		if (error)
3551 			goto done;
3552 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3553 		    repo);
3554 		free(head_commit_id);
3555 		if (error != NULL)
3556 			goto done;
3557 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3558 		if (error)
3559 			goto done;
3560 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3561 		if (error)
3562 			goto done;
3563 	} else {
3564 		error = check_linear_ancestry(commit_id,
3565 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3566 		if (error != NULL) {
3567 			if (error->code == GOT_ERR_ANCESTRY)
3568 				error = got_error(GOT_ERR_BRANCH_MOVED);
3569 			goto done;
3570 		}
3571 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3572 		if (error)
3573 			goto done;
3574 	}
3575 
3576 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3577 	    commit_id) != 0) {
3578 		error = got_worktree_set_base_commit_id(worktree, repo,
3579 		    commit_id);
3580 		if (error)
3581 			goto done;
3582 	}
3583 
3584 	memset(&upa, 0, sizeof(upa));
3585 	upa.verbosity = verbosity;
3586 	error = got_worktree_checkout_files(worktree, &paths, repo,
3587 	    update_progress, &upa, check_cancelled, NULL);
3588 	if (error != NULL)
3589 		goto done;
3590 
3591 	if (upa.did_something) {
3592 		printf("Updated to %s: %s\n",
3593 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3594 	} else
3595 		printf("Already up-to-date\n");
3596 
3597 	print_update_progress_stats(&upa);
3598 done:
3599 	if (pack_fds) {
3600 		const struct got_error *pack_err =
3601 		    got_repo_pack_fds_close(pack_fds);
3602 		if (error == NULL)
3603 			error = pack_err;
3604 	}
3605 	free(worktree_path);
3606 	TAILQ_FOREACH(pe, &paths, entry)
3607 		free((char *)pe->path);
3608 	got_pathlist_free(&paths);
3609 	free(commit_id);
3610 	free(commit_id_str);
3611 	return error;
3612 }
3613 
3614 static const struct got_error *
3615 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3616     const char *path, int diff_context, int ignore_whitespace,
3617     int force_text_diff, struct got_repository *repo, FILE *outfile)
3618 {
3619 	const struct got_error *err = NULL;
3620 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3621 	FILE *f1 = NULL, *f2 = NULL;
3622 	int fd1 = -1, fd2 = -1;
3623 
3624 	fd1 = got_opentempfd();
3625 	if (fd1 == -1)
3626 		return got_error_from_errno("got_opentempfd");
3627 	fd2 = got_opentempfd();
3628 	if (fd2 == -1) {
3629 		err = got_error_from_errno("got_opentempfd");
3630 		goto done;
3631 	}
3632 
3633 	if (blob_id1) {
3634 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3635 		    fd1);
3636 		if (err)
3637 			goto done;
3638 	}
3639 
3640 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3641 	if (err)
3642 		goto done;
3643 
3644 	f1 = got_opentemp();
3645 	if (f1 == NULL) {
3646 		err = got_error_from_errno("got_opentemp");
3647 		goto done;
3648 	}
3649 	f2 = got_opentemp();
3650 	if (f2 == NULL) {
3651 		err = got_error_from_errno("got_opentemp");
3652 		goto done;
3653 	}
3654 
3655 	while (path[0] == '/')
3656 		path++;
3657 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3658 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3659 	    force_text_diff, outfile);
3660 done:
3661 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3662 		err = got_error_from_errno("close");
3663 	if (blob1)
3664 		got_object_blob_close(blob1);
3665 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3666 		err = got_error_from_errno("close");
3667 	got_object_blob_close(blob2);
3668 	if (f1 && fclose(f1) == EOF && err == NULL)
3669 		err = got_error_from_errno("fclose");
3670 	if (f2 && fclose(f2) == EOF && err == NULL)
3671 		err = got_error_from_errno("fclose");
3672 	return err;
3673 }
3674 
3675 static const struct got_error *
3676 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3677     const char *path, int diff_context, int ignore_whitespace,
3678     int force_text_diff, struct got_repository *repo, FILE *outfile)
3679 {
3680 	const struct got_error *err = NULL;
3681 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3682 	struct got_diff_blob_output_unidiff_arg arg;
3683 	FILE *f1 = NULL, *f2 = NULL;
3684 	int fd1 = -1, fd2 = -1;
3685 
3686 	if (tree_id1) {
3687 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3688 		if (err)
3689 			goto done;
3690 		fd1 = got_opentempfd();
3691 		if (fd1 == -1) {
3692 			err = got_error_from_errno("got_opentempfd");
3693 			goto done;
3694 		}
3695 	}
3696 
3697 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3698 	if (err)
3699 		goto done;
3700 
3701 	f1 = got_opentemp();
3702 	if (f1 == NULL) {
3703 		err = got_error_from_errno("got_opentemp");
3704 		goto done;
3705 	}
3706 
3707 	f2 = got_opentemp();
3708 	if (f2 == NULL) {
3709 		err = got_error_from_errno("got_opentemp");
3710 		goto done;
3711 	}
3712 	fd2 = got_opentempfd();
3713 	if (fd2 == -1) {
3714 		err = got_error_from_errno("got_opentempfd");
3715 		goto done;
3716 	}
3717 	arg.diff_context = diff_context;
3718 	arg.ignore_whitespace = ignore_whitespace;
3719 	arg.force_text_diff = force_text_diff;
3720 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3721 	arg.outfile = outfile;
3722 	arg.line_offsets = NULL;
3723 	arg.nlines = 0;
3724 	while (path[0] == '/')
3725 		path++;
3726 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3727 	    got_diff_blob_output_unidiff, &arg, 1);
3728 done:
3729 	if (tree1)
3730 		got_object_tree_close(tree1);
3731 	if (tree2)
3732 		got_object_tree_close(tree2);
3733 	if (f1 && fclose(f1) == EOF && err == NULL)
3734 		err = got_error_from_errno("fclose");
3735 	if (f2 && fclose(f2) == EOF && err == NULL)
3736 		err = got_error_from_errno("fclose");
3737 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3738 		err = got_error_from_errno("close");
3739 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3740 		err = got_error_from_errno("close");
3741 	return err;
3742 }
3743 
3744 static const struct got_error *
3745 get_changed_paths(struct got_pathlist_head *paths,
3746     struct got_commit_object *commit, struct got_repository *repo)
3747 {
3748 	const struct got_error *err = NULL;
3749 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3750 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3751 	struct got_object_qid *qid;
3752 
3753 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3754 	if (qid != NULL) {
3755 		struct got_commit_object *pcommit;
3756 		err = got_object_open_as_commit(&pcommit, repo,
3757 		    &qid->id);
3758 		if (err)
3759 			return err;
3760 
3761 		tree_id1 = got_object_id_dup(
3762 		    got_object_commit_get_tree_id(pcommit));
3763 		if (tree_id1 == NULL) {
3764 			got_object_commit_close(pcommit);
3765 			return got_error_from_errno("got_object_id_dup");
3766 		}
3767 		got_object_commit_close(pcommit);
3768 
3769 	}
3770 
3771 	if (tree_id1) {
3772 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3773 		if (err)
3774 			goto done;
3775 	}
3776 
3777 	tree_id2 = got_object_commit_get_tree_id(commit);
3778 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3779 	if (err)
3780 		goto done;
3781 
3782 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
3783 	    got_diff_tree_collect_changed_paths, paths, 0);
3784 done:
3785 	if (tree1)
3786 		got_object_tree_close(tree1);
3787 	if (tree2)
3788 		got_object_tree_close(tree2);
3789 	free(tree_id1);
3790 	return err;
3791 }
3792 
3793 static const struct got_error *
3794 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3795     const char *path, int diff_context, struct got_repository *repo,
3796     FILE *outfile)
3797 {
3798 	const struct got_error *err = NULL;
3799 	struct got_commit_object *pcommit = NULL;
3800 	char *id_str1 = NULL, *id_str2 = NULL;
3801 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3802 	struct got_object_qid *qid;
3803 
3804 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3805 	if (qid != NULL) {
3806 		err = got_object_open_as_commit(&pcommit, repo,
3807 		    &qid->id);
3808 		if (err)
3809 			return err;
3810 		err = got_object_id_str(&id_str1, &qid->id);
3811 		if (err)
3812 			goto done;
3813 	}
3814 
3815 	err = got_object_id_str(&id_str2, id);
3816 	if (err)
3817 		goto done;
3818 
3819 	if (path && path[0] != '\0') {
3820 		int obj_type;
3821 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3822 		if (err)
3823 			goto done;
3824 		if (pcommit) {
3825 			err = got_object_id_by_path(&obj_id1, repo,
3826 			    pcommit, path);
3827 			if (err) {
3828 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3829 					free(obj_id2);
3830 					goto done;
3831 				}
3832 			}
3833 		}
3834 		err = got_object_get_type(&obj_type, repo, obj_id2);
3835 		if (err) {
3836 			free(obj_id2);
3837 			goto done;
3838 		}
3839 		fprintf(outfile,
3840 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3841 		fprintf(outfile, "commit - %s\n",
3842 		    id_str1 ? id_str1 : "/dev/null");
3843 		fprintf(outfile, "commit + %s\n", id_str2);
3844 		switch (obj_type) {
3845 		case GOT_OBJ_TYPE_BLOB:
3846 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3847 			    0, 0, repo, outfile);
3848 			break;
3849 		case GOT_OBJ_TYPE_TREE:
3850 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3851 			    0, 0, repo, outfile);
3852 			break;
3853 		default:
3854 			err = got_error(GOT_ERR_OBJ_TYPE);
3855 			break;
3856 		}
3857 		free(obj_id1);
3858 		free(obj_id2);
3859 	} else {
3860 		obj_id2 = got_object_commit_get_tree_id(commit);
3861 		if (pcommit)
3862 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3863 		fprintf(outfile,
3864 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3865 		fprintf(outfile, "commit - %s\n",
3866 		    id_str1 ? id_str1 : "/dev/null");
3867 		fprintf(outfile, "commit + %s\n", id_str2);
3868 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3869 		    repo, outfile);
3870 	}
3871 done:
3872 	free(id_str1);
3873 	free(id_str2);
3874 	if (pcommit)
3875 		got_object_commit_close(pcommit);
3876 	return err;
3877 }
3878 
3879 static char *
3880 get_datestr(time_t *time, char *datebuf)
3881 {
3882 	struct tm mytm, *tm;
3883 	char *p, *s;
3884 
3885 	tm = gmtime_r(time, &mytm);
3886 	if (tm == NULL)
3887 		return NULL;
3888 	s = asctime_r(tm, datebuf);
3889 	if (s == NULL)
3890 		return NULL;
3891 	p = strchr(s, '\n');
3892 	if (p)
3893 		*p = '\0';
3894 	return s;
3895 }
3896 
3897 static const struct got_error *
3898 match_commit(int *have_match, struct got_object_id *id,
3899     struct got_commit_object *commit, regex_t *regex)
3900 {
3901 	const struct got_error *err = NULL;
3902 	regmatch_t regmatch;
3903 	char *id_str = NULL, *logmsg = NULL;
3904 
3905 	*have_match = 0;
3906 
3907 	err = got_object_id_str(&id_str, id);
3908 	if (err)
3909 		return err;
3910 
3911 	err = got_object_commit_get_logmsg(&logmsg, commit);
3912 	if (err)
3913 		goto done;
3914 
3915 	if (regexec(regex, got_object_commit_get_author(commit), 1,
3916 	    &regmatch, 0) == 0 ||
3917 	    regexec(regex, got_object_commit_get_committer(commit), 1,
3918 	    &regmatch, 0) == 0 ||
3919 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
3920 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3921 		*have_match = 1;
3922 done:
3923 	free(id_str);
3924 	free(logmsg);
3925 	return err;
3926 }
3927 
3928 static void
3929 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3930     regex_t *regex)
3931 {
3932 	regmatch_t regmatch;
3933 	struct got_pathlist_entry *pe;
3934 
3935 	*have_match = 0;
3936 
3937 	TAILQ_FOREACH(pe, changed_paths, entry) {
3938 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3939 			*have_match = 1;
3940 			break;
3941 		}
3942 	}
3943 }
3944 
3945 static const struct got_error *
3946 match_patch(int *have_match, struct got_commit_object *commit,
3947     struct got_object_id *id, const char *path, int diff_context,
3948     struct got_repository *repo, regex_t *regex, FILE *f)
3949 {
3950 	const struct got_error *err = NULL;
3951 	char *line = NULL;
3952 	size_t linesize = 0;
3953 	ssize_t linelen;
3954 	regmatch_t regmatch;
3955 
3956 	*have_match = 0;
3957 
3958 	err = got_opentemp_truncate(f);
3959 	if (err)
3960 		return err;
3961 
3962 	err = print_patch(commit, id, path, diff_context, repo, f);
3963 	if (err)
3964 		goto done;
3965 
3966 	if (fseeko(f, 0L, SEEK_SET) == -1) {
3967 		err = got_error_from_errno("fseeko");
3968 		goto done;
3969 	}
3970 
3971 	while ((linelen = getline(&line, &linesize, f)) != -1) {
3972 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
3973 			*have_match = 1;
3974 			break;
3975 		}
3976 	}
3977 done:
3978 	free(line);
3979 	return err;
3980 }
3981 
3982 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3983 
3984 static const struct got_error*
3985 build_refs_str(char **refs_str, struct got_reflist_head *refs,
3986     struct got_object_id *id, struct got_repository *repo,
3987     int local_only)
3988 {
3989 	static const struct got_error *err = NULL;
3990 	struct got_reflist_entry *re;
3991 	char *s;
3992 	const char *name;
3993 
3994 	*refs_str = NULL;
3995 
3996 	TAILQ_FOREACH(re, refs, entry) {
3997 		struct got_tag_object *tag = NULL;
3998 		struct got_object_id *ref_id;
3999 		int cmp;
4000 
4001 		name = got_ref_get_name(re->ref);
4002 		if (strcmp(name, GOT_REF_HEAD) == 0)
4003 			continue;
4004 		if (strncmp(name, "refs/", 5) == 0)
4005 			name += 5;
4006 		if (strncmp(name, "got/", 4) == 0)
4007 			continue;
4008 		if (strncmp(name, "heads/", 6) == 0)
4009 			name += 6;
4010 		if (strncmp(name, "remotes/", 8) == 0) {
4011 			if (local_only)
4012 				continue;
4013 			name += 8;
4014 			s = strstr(name, "/" GOT_REF_HEAD);
4015 			if (s != NULL && s[strlen(s)] == '\0')
4016 				continue;
4017 		}
4018 		err = got_ref_resolve(&ref_id, repo, re->ref);
4019 		if (err)
4020 			break;
4021 		if (strncmp(name, "tags/", 5) == 0) {
4022 			err = got_object_open_as_tag(&tag, repo, ref_id);
4023 			if (err) {
4024 				if (err->code != GOT_ERR_OBJ_TYPE) {
4025 					free(ref_id);
4026 					break;
4027 				}
4028 				/* Ref points at something other than a tag. */
4029 				err = NULL;
4030 				tag = NULL;
4031 			}
4032 		}
4033 		cmp = got_object_id_cmp(tag ?
4034 		    got_object_tag_get_object_id(tag) : ref_id, id);
4035 		free(ref_id);
4036 		if (tag)
4037 			got_object_tag_close(tag);
4038 		if (cmp != 0)
4039 			continue;
4040 		s = *refs_str;
4041 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
4042 		    s ? ", " : "", name) == -1) {
4043 			err = got_error_from_errno("asprintf");
4044 			free(s);
4045 			*refs_str = NULL;
4046 			break;
4047 		}
4048 		free(s);
4049 	}
4050 
4051 	return err;
4052 }
4053 
4054 static const struct got_error *
4055 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
4056     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
4057 {
4058 	const struct got_error *err = NULL;
4059 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
4060 	char *comma, *s, *nl;
4061 	struct got_reflist_head *refs;
4062 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
4063 	struct tm tm;
4064 	time_t committer_time;
4065 
4066 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4067 	if (refs) {
4068 		err = build_refs_str(&ref_str, refs, id, repo, 1);
4069 		if (err)
4070 			return err;
4071 
4072 		/* Display the first matching ref only. */
4073 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
4074 			*comma = '\0';
4075 	}
4076 
4077 	if (ref_str == NULL) {
4078 		err = got_object_id_str(&id_str, id);
4079 		if (err)
4080 			return err;
4081 	}
4082 
4083 	committer_time = got_object_commit_get_committer_time(commit);
4084 	if (gmtime_r(&committer_time, &tm) == NULL) {
4085 		err = got_error_from_errno("gmtime_r");
4086 		goto done;
4087 	}
4088 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
4089 		err = got_error(GOT_ERR_NO_SPACE);
4090 		goto done;
4091 	}
4092 
4093 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4094 	if (err)
4095 		goto done;
4096 
4097 	s = logmsg0;
4098 	while (isspace((unsigned char)s[0]))
4099 		s++;
4100 
4101 	nl = strchr(s, '\n');
4102 	if (nl) {
4103 		*nl = '\0';
4104 	}
4105 
4106 	if (ref_str)
4107 		printf("%s%-7s %s\n", datebuf, ref_str, s);
4108 	else
4109 		printf("%s%.7s %s\n", datebuf, id_str, s);
4110 
4111 	if (fflush(stdout) != 0 && err == NULL)
4112 		err = got_error_from_errno("fflush");
4113 done:
4114 	free(id_str);
4115 	free(ref_str);
4116 	free(logmsg0);
4117 	return err;
4118 }
4119 
4120 static const struct got_error *
4121 print_commit(struct got_commit_object *commit, struct got_object_id *id,
4122     struct got_repository *repo, const char *path,
4123     struct got_pathlist_head *changed_paths, int show_patch,
4124     int diff_context, struct got_reflist_object_id_map *refs_idmap,
4125     const char *custom_refs_str)
4126 {
4127 	const struct got_error *err = NULL;
4128 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
4129 	char datebuf[26];
4130 	time_t committer_time;
4131 	const char *author, *committer;
4132 	char *refs_str = NULL;
4133 
4134 	err = got_object_id_str(&id_str, id);
4135 	if (err)
4136 		return err;
4137 
4138 	if (custom_refs_str == NULL) {
4139 		struct got_reflist_head *refs;
4140 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4141 		if (refs) {
4142 			err = build_refs_str(&refs_str, refs, id, repo, 0);
4143 			if (err)
4144 				goto done;
4145 		}
4146 	}
4147 
4148 	printf(GOT_COMMIT_SEP_STR);
4149 	if (custom_refs_str)
4150 		printf("commit %s (%s)\n", id_str, custom_refs_str); 
4151 	else
4152 		printf("commit %s%s%s%s\n", id_str, refs_str ? " (" : "",
4153 		    refs_str ? refs_str : "", refs_str ? ")" : "");
4154 	free(id_str);
4155 	id_str = NULL;
4156 	free(refs_str);
4157 	refs_str = NULL;
4158 	printf("from: %s\n", got_object_commit_get_author(commit));
4159 	committer_time = got_object_commit_get_committer_time(commit);
4160 	datestr = get_datestr(&committer_time, datebuf);
4161 	if (datestr)
4162 		printf("date: %s UTC\n", datestr);
4163 	author = got_object_commit_get_author(commit);
4164 	committer = got_object_commit_get_committer(commit);
4165 	if (strcmp(author, committer) != 0)
4166 		printf("via: %s\n", committer);
4167 	if (got_object_commit_get_nparents(commit) > 1) {
4168 		const struct got_object_id_queue *parent_ids;
4169 		struct got_object_qid *qid;
4170 		int n = 1;
4171 		parent_ids = got_object_commit_get_parent_ids(commit);
4172 		STAILQ_FOREACH(qid, parent_ids, entry) {
4173 			err = got_object_id_str(&id_str, &qid->id);
4174 			if (err)
4175 				goto done;
4176 			printf("parent %d: %s\n", n++, id_str);
4177 			free(id_str);
4178 			id_str = NULL;
4179 		}
4180 	}
4181 
4182 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4183 	if (err)
4184 		goto done;
4185 
4186 	logmsg = logmsg0;
4187 	do {
4188 		line = strsep(&logmsg, "\n");
4189 		if (line)
4190 			printf(" %s\n", line);
4191 	} while (line);
4192 	free(logmsg0);
4193 
4194 	if (changed_paths) {
4195 		struct got_pathlist_entry *pe;
4196 		TAILQ_FOREACH(pe, changed_paths, entry) {
4197 			struct got_diff_changed_path *cp = pe->data;
4198 			printf(" %c  %s\n", cp->status, pe->path);
4199 		}
4200 		printf("\n");
4201 	}
4202 	if (show_patch) {
4203 		err = print_patch(commit, id, path, diff_context, repo, stdout);
4204 		if (err == 0)
4205 			printf("\n");
4206 	}
4207 
4208 	if (fflush(stdout) != 0 && err == NULL)
4209 		err = got_error_from_errno("fflush");
4210 done:
4211 	free(id_str);
4212 	free(refs_str);
4213 	return err;
4214 }
4215 
4216 static const struct got_error *
4217 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
4218     struct got_repository *repo, const char *path, int show_changed_paths,
4219     int show_patch, const char *search_pattern, int diff_context, int limit,
4220     int log_branches, int reverse_display_order,
4221     struct got_reflist_object_id_map *refs_idmap, int one_line,
4222     FILE *tmpfile)
4223 {
4224 	const struct got_error *err;
4225 	struct got_commit_graph *graph;
4226 	regex_t regex;
4227 	int have_match;
4228 	struct got_object_id_queue reversed_commits;
4229 	struct got_object_qid *qid;
4230 	struct got_commit_object *commit;
4231 	struct got_pathlist_head changed_paths;
4232 	struct got_pathlist_entry *pe;
4233 
4234 	STAILQ_INIT(&reversed_commits);
4235 	TAILQ_INIT(&changed_paths);
4236 
4237 	if (search_pattern && regcomp(&regex, search_pattern,
4238 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
4239 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
4240 
4241 	err = got_commit_graph_open(&graph, path, !log_branches);
4242 	if (err)
4243 		return err;
4244 	err = got_commit_graph_iter_start(graph, root_id, repo,
4245 	    check_cancelled, NULL);
4246 	if (err)
4247 		goto done;
4248 	for (;;) {
4249 		struct got_object_id *id;
4250 
4251 		if (sigint_received || sigpipe_received)
4252 			break;
4253 
4254 		err = got_commit_graph_iter_next(&id, graph, repo,
4255 		    check_cancelled, NULL);
4256 		if (err) {
4257 			if (err->code == GOT_ERR_ITER_COMPLETED)
4258 				err = NULL;
4259 			break;
4260 		}
4261 		if (id == NULL)
4262 			break;
4263 
4264 		err = got_object_open_as_commit(&commit, repo, id);
4265 		if (err)
4266 			break;
4267 
4268 		if (show_changed_paths && !reverse_display_order) {
4269 			err = get_changed_paths(&changed_paths, commit, repo);
4270 			if (err)
4271 				break;
4272 		}
4273 
4274 		if (search_pattern) {
4275 			err = match_commit(&have_match, id, commit, &regex);
4276 			if (err) {
4277 				got_object_commit_close(commit);
4278 				break;
4279 			}
4280 			if (have_match == 0 && show_changed_paths)
4281 				match_changed_paths(&have_match,
4282 				    &changed_paths, &regex);
4283 			if (have_match == 0 && show_patch) {
4284 				err = match_patch(&have_match, commit, id,
4285 				    path, diff_context, repo, &regex,
4286 				    tmpfile);
4287 				if (err)
4288 					break;
4289 			}
4290 			if (have_match == 0) {
4291 				got_object_commit_close(commit);
4292 				TAILQ_FOREACH(pe, &changed_paths, entry) {
4293 					free((char *)pe->path);
4294 					free(pe->data);
4295 				}
4296 				got_pathlist_free(&changed_paths);
4297 				continue;
4298 			}
4299 		}
4300 
4301 		if (reverse_display_order) {
4302 			err = got_object_qid_alloc(&qid, id);
4303 			if (err)
4304 				break;
4305 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
4306 			got_object_commit_close(commit);
4307 		} else {
4308 			if (one_line)
4309 				err = print_commit_oneline(commit, id,
4310 				    repo, refs_idmap);
4311 			else
4312 				err = print_commit(commit, id, repo, path,
4313 				    show_changed_paths ? &changed_paths : NULL,
4314 				    show_patch, diff_context, refs_idmap, NULL);
4315 			got_object_commit_close(commit);
4316 			if (err)
4317 				break;
4318 		}
4319 		if ((limit && --limit == 0) ||
4320 		    (end_id && got_object_id_cmp(id, end_id) == 0))
4321 			break;
4322 
4323 		TAILQ_FOREACH(pe, &changed_paths, entry) {
4324 			free((char *)pe->path);
4325 			free(pe->data);
4326 		}
4327 		got_pathlist_free(&changed_paths);
4328 	}
4329 	if (reverse_display_order) {
4330 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4331 			err = got_object_open_as_commit(&commit, repo,
4332 			    &qid->id);
4333 			if (err)
4334 				break;
4335 			if (show_changed_paths) {
4336 				err = get_changed_paths(&changed_paths,
4337 				    commit, repo);
4338 				if (err)
4339 					break;
4340 			}
4341 			if (one_line)
4342 				err = print_commit_oneline(commit, &qid->id,
4343 				    repo, refs_idmap);
4344 			else
4345 				err = print_commit(commit, &qid->id, repo, path,
4346 				    show_changed_paths ? &changed_paths : NULL,
4347 				    show_patch, diff_context, refs_idmap, NULL);
4348 			got_object_commit_close(commit);
4349 			if (err)
4350 				break;
4351 			TAILQ_FOREACH(pe, &changed_paths, entry) {
4352 				free((char *)pe->path);
4353 				free(pe->data);
4354 			}
4355 			got_pathlist_free(&changed_paths);
4356 		}
4357 	}
4358 done:
4359 	while (!STAILQ_EMPTY(&reversed_commits)) {
4360 		qid = STAILQ_FIRST(&reversed_commits);
4361 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4362 		got_object_qid_free(qid);
4363 	}
4364 	TAILQ_FOREACH(pe, &changed_paths, entry) {
4365 		free((char *)pe->path);
4366 		free(pe->data);
4367 	}
4368 	got_pathlist_free(&changed_paths);
4369 	if (search_pattern)
4370 		regfree(&regex);
4371 	got_commit_graph_close(graph);
4372 	return err;
4373 }
4374 
4375 __dead static void
4376 usage_log(void)
4377 {
4378 	fprintf(stderr, "usage: %s log [-b] [-p] [-P] [-s] [-c commit] "
4379 	    "[-C number] [ -l N ] [-x commit] [-S search-pattern] "
4380 	    "[-r repository-path] [-R] [path]\n", getprogname());
4381 	exit(1);
4382 }
4383 
4384 static int
4385 get_default_log_limit(void)
4386 {
4387 	const char *got_default_log_limit;
4388 	long long n;
4389 	const char *errstr;
4390 
4391 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4392 	if (got_default_log_limit == NULL)
4393 		return 0;
4394 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4395 	if (errstr != NULL)
4396 		return 0;
4397 	return n;
4398 }
4399 
4400 static const struct got_error *
4401 cmd_log(int argc, char *argv[])
4402 {
4403 	const struct got_error *error;
4404 	struct got_repository *repo = NULL;
4405 	struct got_worktree *worktree = NULL;
4406 	struct got_object_id *start_id = NULL, *end_id = NULL;
4407 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4408 	const char *start_commit = NULL, *end_commit = NULL;
4409 	const char *search_pattern = NULL;
4410 	int diff_context = -1, ch;
4411 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4412 	int reverse_display_order = 0, one_line = 0;
4413 	const char *errstr;
4414 	struct got_reflist_head refs;
4415 	struct got_reflist_object_id_map *refs_idmap = NULL;
4416 	FILE *tmpfile = NULL;
4417 	int *pack_fds = NULL;
4418 
4419 	TAILQ_INIT(&refs);
4420 
4421 #ifndef PROFILE
4422 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4423 	    NULL)
4424 	    == -1)
4425 		err(1, "pledge");
4426 #endif
4427 
4428 	limit = get_default_log_limit();
4429 
4430 	while ((ch = getopt(argc, argv, "bpPc:C:l:r:RsS:x:")) != -1) {
4431 		switch (ch) {
4432 		case 'p':
4433 			show_patch = 1;
4434 			break;
4435 		case 'P':
4436 			show_changed_paths = 1;
4437 			break;
4438 		case 'c':
4439 			start_commit = optarg;
4440 			break;
4441 		case 'C':
4442 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4443 			    &errstr);
4444 			if (errstr != NULL)
4445 				errx(1, "number of context lines is %s: %s",
4446 				    errstr, optarg);
4447 			break;
4448 		case 'l':
4449 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4450 			if (errstr != NULL)
4451 				errx(1, "number of commits is %s: %s",
4452 				    errstr, optarg);
4453 			break;
4454 		case 'b':
4455 			log_branches = 1;
4456 			break;
4457 		case 'r':
4458 			repo_path = realpath(optarg, NULL);
4459 			if (repo_path == NULL)
4460 				return got_error_from_errno2("realpath",
4461 				    optarg);
4462 			got_path_strip_trailing_slashes(repo_path);
4463 			break;
4464 		case 'R':
4465 			reverse_display_order = 1;
4466 			break;
4467 		case 's':
4468 			one_line = 1;
4469 			break;
4470 		case 'S':
4471 			search_pattern = optarg;
4472 			break;
4473 		case 'x':
4474 			end_commit = optarg;
4475 			break;
4476 		default:
4477 			usage_log();
4478 			/* NOTREACHED */
4479 		}
4480 	}
4481 
4482 	argc -= optind;
4483 	argv += optind;
4484 
4485 	if (diff_context == -1)
4486 		diff_context = 3;
4487 	else if (!show_patch)
4488 		errx(1, "-C requires -p");
4489 
4490 	if (one_line && (show_patch || show_changed_paths))
4491 		errx(1, "cannot use -s with -p or -P");
4492 
4493 	cwd = getcwd(NULL, 0);
4494 	if (cwd == NULL) {
4495 		error = got_error_from_errno("getcwd");
4496 		goto done;
4497 	}
4498 
4499 	error = got_repo_pack_fds_open(&pack_fds);
4500 	if (error != NULL)
4501 		goto done;
4502 
4503 	if (repo_path == NULL) {
4504 		error = got_worktree_open(&worktree, cwd);
4505 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4506 			goto done;
4507 		error = NULL;
4508 	}
4509 
4510 	if (argc == 1) {
4511 		if (worktree) {
4512 			error = got_worktree_resolve_path(&path, worktree,
4513 			    argv[0]);
4514 			if (error)
4515 				goto done;
4516 		} else {
4517 			path = strdup(argv[0]);
4518 			if (path == NULL) {
4519 				error = got_error_from_errno("strdup");
4520 				goto done;
4521 			}
4522 		}
4523 	} else if (argc != 0)
4524 		usage_log();
4525 
4526 	if (repo_path == NULL) {
4527 		repo_path = worktree ?
4528 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4529 	}
4530 	if (repo_path == NULL) {
4531 		error = got_error_from_errno("strdup");
4532 		goto done;
4533 	}
4534 
4535 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4536 	if (error != NULL)
4537 		goto done;
4538 
4539 	error = apply_unveil(got_repo_get_path(repo), 1,
4540 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4541 	if (error)
4542 		goto done;
4543 
4544 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4545 	if (error)
4546 		goto done;
4547 
4548 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4549 	if (error)
4550 		goto done;
4551 
4552 	if (start_commit == NULL) {
4553 		struct got_reference *head_ref;
4554 		struct got_commit_object *commit = NULL;
4555 		error = got_ref_open(&head_ref, repo,
4556 		    worktree ? got_worktree_get_head_ref_name(worktree)
4557 		    : GOT_REF_HEAD, 0);
4558 		if (error != NULL)
4559 			goto done;
4560 		error = got_ref_resolve(&start_id, repo, head_ref);
4561 		got_ref_close(head_ref);
4562 		if (error != NULL)
4563 			goto done;
4564 		error = got_object_open_as_commit(&commit, repo,
4565 		    start_id);
4566 		if (error != NULL)
4567 			goto done;
4568 		got_object_commit_close(commit);
4569 	} else {
4570 		error = got_repo_match_object_id(&start_id, NULL,
4571 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4572 		if (error != NULL)
4573 			goto done;
4574 	}
4575 	if (end_commit != NULL) {
4576 		error = got_repo_match_object_id(&end_id, NULL,
4577 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4578 		if (error != NULL)
4579 			goto done;
4580 	}
4581 
4582 	if (worktree) {
4583 		/*
4584 		 * If a path was specified on the command line it was resolved
4585 		 * to a path in the work tree above. Prepend the work tree's
4586 		 * path prefix to obtain the corresponding in-repository path.
4587 		 */
4588 		if (path) {
4589 			const char *prefix;
4590 			prefix = got_worktree_get_path_prefix(worktree);
4591 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4592 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4593 				error = got_error_from_errno("asprintf");
4594 				goto done;
4595 			}
4596 		}
4597 	} else
4598 		error = got_repo_map_path(&in_repo_path, repo,
4599 		    path ? path : "");
4600 	if (error != NULL)
4601 		goto done;
4602 	if (in_repo_path) {
4603 		free(path);
4604 		path = in_repo_path;
4605 	}
4606 
4607 	if (worktree) {
4608 		/* Release work tree lock. */
4609 		got_worktree_close(worktree);
4610 		worktree = NULL;
4611 	}
4612 
4613 	if (search_pattern && show_patch) {
4614 		tmpfile = got_opentemp();
4615 		if (tmpfile == NULL) {
4616 			error = got_error_from_errno("got_opentemp");
4617 			goto done;
4618 		}
4619 	}
4620 
4621 	error = print_commits(start_id, end_id, repo, path ? path : "",
4622 	    show_changed_paths, show_patch, search_pattern, diff_context,
4623 	    limit, log_branches, reverse_display_order, refs_idmap, one_line,
4624 	    tmpfile);
4625 done:
4626 	free(path);
4627 	free(repo_path);
4628 	free(cwd);
4629 	if (worktree)
4630 		got_worktree_close(worktree);
4631 	if (repo) {
4632 		const struct got_error *close_err = got_repo_close(repo);
4633 		if (error == NULL)
4634 			error = close_err;
4635 	}
4636 	if (pack_fds) {
4637 		const struct got_error *pack_err =
4638 		    got_repo_pack_fds_close(pack_fds);
4639 		if (error == NULL)
4640 			error = pack_err;
4641 	}
4642 	if (refs_idmap)
4643 		got_reflist_object_id_map_free(refs_idmap);
4644 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4645 		error = got_error_from_errno("fclose");
4646 	got_ref_list_free(&refs);
4647 	return error;
4648 }
4649 
4650 __dead static void
4651 usage_diff(void)
4652 {
4653 	fprintf(stderr, "usage: %s diff [-a] [-c commit] [-C number] "
4654 	    "[-r repository-path] [-s] [-w] [-P] "
4655 	    "[object1 object2 | path ...]\n", getprogname());
4656 	exit(1);
4657 }
4658 
4659 struct print_diff_arg {
4660 	struct got_repository *repo;
4661 	struct got_worktree *worktree;
4662 	int diff_context;
4663 	const char *id_str;
4664 	int header_shown;
4665 	int diff_staged;
4666 	enum got_diff_algorithm diff_algo;
4667 	int ignore_whitespace;
4668 	int force_text_diff;
4669 	FILE *f1;
4670 	FILE *f2;
4671 };
4672 
4673 /*
4674  * Create a file which contains the target path of a symlink so we can feed
4675  * it as content to the diff engine.
4676  */
4677 static const struct got_error *
4678 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4679     const char *abspath)
4680 {
4681 	const struct got_error *err = NULL;
4682 	char target_path[PATH_MAX];
4683 	ssize_t target_len, outlen;
4684 
4685 	*fd = -1;
4686 
4687 	if (dirfd != -1) {
4688 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4689 		if (target_len == -1)
4690 			return got_error_from_errno2("readlinkat", abspath);
4691 	} else {
4692 		target_len = readlink(abspath, target_path, PATH_MAX);
4693 		if (target_len == -1)
4694 			return got_error_from_errno2("readlink", abspath);
4695 	}
4696 
4697 	*fd = got_opentempfd();
4698 	if (*fd == -1)
4699 		return got_error_from_errno("got_opentempfd");
4700 
4701 	outlen = write(*fd, target_path, target_len);
4702 	if (outlen == -1) {
4703 		err = got_error_from_errno("got_opentempfd");
4704 		goto done;
4705 	}
4706 
4707 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4708 		err = got_error_from_errno2("lseek", abspath);
4709 		goto done;
4710 	}
4711 done:
4712 	if (err) {
4713 		close(*fd);
4714 		*fd = -1;
4715 	}
4716 	return err;
4717 }
4718 
4719 static const struct got_error *
4720 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4721     const char *path, struct got_object_id *blob_id,
4722     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4723     int dirfd, const char *de_name)
4724 {
4725 	struct print_diff_arg *a = arg;
4726 	const struct got_error *err = NULL;
4727 	struct got_blob_object *blob1 = NULL;
4728 	int fd = -1, fd1 = -1, fd2 = -1;
4729 	FILE *f2 = NULL;
4730 	char *abspath = NULL, *label1 = NULL;
4731 	struct stat sb;
4732 	off_t size1 = 0;
4733 	int f2_exists = 1;
4734 
4735 	if (a->diff_staged) {
4736 		if (staged_status != GOT_STATUS_MODIFY &&
4737 		    staged_status != GOT_STATUS_ADD &&
4738 		    staged_status != GOT_STATUS_DELETE)
4739 			return NULL;
4740 	} else {
4741 		if (staged_status == GOT_STATUS_DELETE)
4742 			return NULL;
4743 		if (status == GOT_STATUS_NONEXISTENT)
4744 			return got_error_set_errno(ENOENT, path);
4745 		if (status != GOT_STATUS_MODIFY &&
4746 		    status != GOT_STATUS_ADD &&
4747 		    status != GOT_STATUS_DELETE &&
4748 		    status != GOT_STATUS_CONFLICT)
4749 			return NULL;
4750 	}
4751 
4752 	err = got_opentemp_truncate(a->f1);
4753 	if (err)
4754 		return got_error_from_errno("got_opentemp_truncate");
4755 	err = got_opentemp_truncate(a->f2);
4756 	if (err)
4757 		return got_error_from_errno("got_opentemp_truncate");
4758 
4759 	if (!a->header_shown) {
4760 		printf("diff %s%s\n", a->diff_staged ? "-s " : "",
4761 		    got_worktree_get_root_path(a->worktree));
4762 		printf("commit - %s\n", a->id_str);
4763 		printf("path + %s%s\n",
4764 		    got_worktree_get_root_path(a->worktree),
4765 		    a->diff_staged ? " (staged changes)" : "");
4766 		a->header_shown = 1;
4767 	}
4768 
4769 	if (a->diff_staged) {
4770 		const char *label1 = NULL, *label2 = NULL;
4771 		switch (staged_status) {
4772 		case GOT_STATUS_MODIFY:
4773 			label1 = path;
4774 			label2 = path;
4775 			break;
4776 		case GOT_STATUS_ADD:
4777 			label2 = path;
4778 			break;
4779 		case GOT_STATUS_DELETE:
4780 			label1 = path;
4781 			break;
4782 		default:
4783 			return got_error(GOT_ERR_FILE_STATUS);
4784 		}
4785 		fd1 = got_opentempfd();
4786 		if (fd1 == -1) {
4787 			err = got_error_from_errno("got_opentempfd");
4788 			goto done;
4789 		}
4790 		fd2 = got_opentempfd();
4791 		if (fd2 == -1) {
4792 			err = got_error_from_errno("got_opentempfd");
4793 			goto done;
4794 		}
4795 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
4796 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
4797 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
4798 		    a->force_text_diff, a->repo, stdout);
4799 		goto done;
4800 	}
4801 
4802 	fd1 = got_opentempfd();
4803 	if (fd1 == -1) {
4804 		err = got_error_from_errno("got_opentempfd");
4805 		goto done;
4806 	}
4807 
4808 	if (staged_status == GOT_STATUS_ADD ||
4809 	    staged_status == GOT_STATUS_MODIFY) {
4810 		char *id_str;
4811 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4812 		    8192, fd1);
4813 		if (err)
4814 			goto done;
4815 		err = got_object_id_str(&id_str, staged_blob_id);
4816 		if (err)
4817 			goto done;
4818 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4819 			err = got_error_from_errno("asprintf");
4820 			free(id_str);
4821 			goto done;
4822 		}
4823 		free(id_str);
4824 	} else if (status != GOT_STATUS_ADD) {
4825 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
4826 		    fd1);
4827 		if (err)
4828 			goto done;
4829 	}
4830 
4831 	if (status != GOT_STATUS_DELETE) {
4832 		if (asprintf(&abspath, "%s/%s",
4833 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4834 			err = got_error_from_errno("asprintf");
4835 			goto done;
4836 		}
4837 
4838 		if (dirfd != -1) {
4839 			fd = openat(dirfd, de_name,
4840 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4841 			if (fd == -1) {
4842 				if (!got_err_open_nofollow_on_symlink()) {
4843 					err = got_error_from_errno2("openat",
4844 					    abspath);
4845 					goto done;
4846 				}
4847 				err = get_symlink_target_file(&fd, dirfd,
4848 				    de_name, abspath);
4849 				if (err)
4850 					goto done;
4851 			}
4852 		} else {
4853 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4854 			if (fd == -1) {
4855 				if (!got_err_open_nofollow_on_symlink()) {
4856 					err = got_error_from_errno2("open",
4857 					    abspath);
4858 					goto done;
4859 				}
4860 				err = get_symlink_target_file(&fd, dirfd,
4861 				    de_name, abspath);
4862 				if (err)
4863 					goto done;
4864 			}
4865 		}
4866 		if (fstat(fd, &sb) == -1) {
4867 			err = got_error_from_errno2("fstat", abspath);
4868 			goto done;
4869 		}
4870 		f2 = fdopen(fd, "r");
4871 		if (f2 == NULL) {
4872 			err = got_error_from_errno2("fdopen", abspath);
4873 			goto done;
4874 		}
4875 		fd = -1;
4876 	} else {
4877 		sb.st_size = 0;
4878 		f2_exists = 0;
4879 	}
4880 
4881 	if (blob1) {
4882 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
4883 		    a->f1, blob1);
4884 		if (err)
4885 			goto done;
4886 	}
4887 
4888 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
4889 	    f2_exists, sb.st_size, path, GOT_DIFF_ALGORITHM_PATIENCE,
4890 	    a->diff_context, a->ignore_whitespace, a->force_text_diff, stdout);
4891 done:
4892 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
4893 		err = got_error_from_errno("close");
4894 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
4895 		err = got_error_from_errno("close");
4896 	if (blob1)
4897 		got_object_blob_close(blob1);
4898 	if (fd != -1 && close(fd) == -1 && err == NULL)
4899 		err = got_error_from_errno("close");
4900 	if (f2 && fclose(f2) == EOF && err == NULL)
4901 		err = got_error_from_errno("fclose");
4902 	free(abspath);
4903 	return err;
4904 }
4905 
4906 static const struct got_error *
4907 cmd_diff(int argc, char *argv[])
4908 {
4909 	const struct got_error *error;
4910 	struct got_repository *repo = NULL;
4911 	struct got_worktree *worktree = NULL;
4912 	char *cwd = NULL, *repo_path = NULL;
4913 	const char *commit_args[2] = { NULL, NULL };
4914 	int ncommit_args = 0;
4915 	struct got_object_id *ids[2] = { NULL, NULL };
4916 	char *labels[2] = { NULL, NULL };
4917 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
4918 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
4919 	int force_text_diff = 0, force_path = 0, rflag = 0;
4920 	const char *errstr;
4921 	struct got_reflist_head refs;
4922 	struct got_pathlist_head paths;
4923 	struct got_pathlist_entry *pe;
4924 	FILE *f1 = NULL, *f2 = NULL;
4925 	int fd1 = -1, fd2 = -1;
4926 	int *pack_fds = NULL;
4927 
4928 	TAILQ_INIT(&refs);
4929 	TAILQ_INIT(&paths);
4930 
4931 #ifndef PROFILE
4932 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4933 	    NULL) == -1)
4934 		err(1, "pledge");
4935 #endif
4936 
4937 	while ((ch = getopt(argc, argv, "ac:C:r:swP")) != -1) {
4938 		switch (ch) {
4939 		case 'a':
4940 			force_text_diff = 1;
4941 			break;
4942 		case 'c':
4943 			if (ncommit_args >= 2)
4944 				errx(1, "too many -c options used");
4945 			commit_args[ncommit_args++] = optarg;
4946 			break;
4947 		case 'C':
4948 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4949 			    &errstr);
4950 			if (errstr != NULL)
4951 				errx(1, "number of context lines is %s: %s",
4952 				    errstr, optarg);
4953 			break;
4954 		case 'r':
4955 			repo_path = realpath(optarg, NULL);
4956 			if (repo_path == NULL)
4957 				return got_error_from_errno2("realpath",
4958 				    optarg);
4959 			got_path_strip_trailing_slashes(repo_path);
4960 			rflag = 1;
4961 			break;
4962 		case 's':
4963 			diff_staged = 1;
4964 			break;
4965 		case 'w':
4966 			ignore_whitespace = 1;
4967 			break;
4968 		case 'P':
4969 			force_path = 1;
4970 			break;
4971 		default:
4972 			usage_diff();
4973 			/* NOTREACHED */
4974 		}
4975 	}
4976 
4977 	argc -= optind;
4978 	argv += optind;
4979 
4980 	cwd = getcwd(NULL, 0);
4981 	if (cwd == NULL) {
4982 		error = got_error_from_errno("getcwd");
4983 		goto done;
4984 	}
4985 
4986 	error = got_repo_pack_fds_open(&pack_fds);
4987 	if (error != NULL)
4988 		goto done;
4989 
4990 	if (repo_path == NULL) {
4991 		error = got_worktree_open(&worktree, cwd);
4992 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4993 			goto done;
4994 		else
4995 			error = NULL;
4996 		if (worktree) {
4997 			repo_path =
4998 			    strdup(got_worktree_get_repo_path(worktree));
4999 			if (repo_path == NULL) {
5000 				error = got_error_from_errno("strdup");
5001 				goto done;
5002 			}
5003 		} else {
5004 			repo_path = strdup(cwd);
5005 			if (repo_path == NULL) {
5006 				error = got_error_from_errno("strdup");
5007 				goto done;
5008 			}
5009 		}
5010 	}
5011 
5012 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5013 	free(repo_path);
5014 	if (error != NULL)
5015 		goto done;
5016 
5017 	if (rflag || worktree == NULL || ncommit_args > 0) {
5018 		if (force_path) {
5019 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5020 			    "-P option can only be used when diffing "
5021 			    "a work tree");
5022 			goto done;
5023 		}
5024 		if (diff_staged) {
5025 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5026 			    "-s option can only be used when diffing "
5027 			    "a work tree");
5028 			goto done;
5029 		}
5030 	}
5031 
5032 	error = apply_unveil(got_repo_get_path(repo), 1,
5033 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5034 	if (error)
5035 		goto done;
5036 
5037 	if ((!force_path && argc == 2) || ncommit_args > 0) {
5038 		int obj_type = (ncommit_args > 0 ?
5039 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
5040 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5041 		    NULL);
5042 		if (error)
5043 			goto done;
5044 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
5045 			const char *arg;
5046 			if (ncommit_args > 0)
5047 				arg = commit_args[i];
5048 			else
5049 				arg = argv[i];
5050 			error = got_repo_match_object_id(&ids[i], &labels[i],
5051 			    arg, obj_type, &refs, repo);
5052 			if (error) {
5053 				if (error->code != GOT_ERR_NOT_REF &&
5054 				    error->code != GOT_ERR_NO_OBJ)
5055 					goto done;
5056 				if (ncommit_args > 0)
5057 					goto done;
5058 				error = NULL;
5059 				break;
5060 			}
5061 		}
5062 	}
5063 
5064 	f1 = got_opentemp();
5065 	if (f1 == NULL) {
5066 		error = got_error_from_errno("got_opentemp");
5067 		goto done;
5068 	}
5069 
5070 	f2 = got_opentemp();
5071 	if (f2 == NULL) {
5072 		error = got_error_from_errno("got_opentemp");
5073 		goto done;
5074 	}
5075 
5076 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
5077 		struct print_diff_arg arg;
5078 		char *id_str;
5079 
5080 		if (worktree == NULL) {
5081 			if (argc == 2 && ids[0] == NULL) {
5082 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
5083 				goto done;
5084 			} else if (argc == 2 && ids[1] == NULL) {
5085 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
5086 				goto done;
5087 			} else if (argc > 0) {
5088 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
5089 				    "%s", "specified paths cannot be resolved");
5090 				goto done;
5091 			} else {
5092 				error = got_error(GOT_ERR_NOT_WORKTREE);
5093 				goto done;
5094 			}
5095 		}
5096 
5097 		error = get_worktree_paths_from_argv(&paths, argc, argv,
5098 		    worktree);
5099 		if (error)
5100 			goto done;
5101 
5102 		error = got_object_id_str(&id_str,
5103 		    got_worktree_get_base_commit_id(worktree));
5104 		if (error)
5105 			goto done;
5106 		arg.repo = repo;
5107 		arg.worktree = worktree;
5108 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5109 		arg.diff_context = diff_context;
5110 		arg.id_str = id_str;
5111 		arg.header_shown = 0;
5112 		arg.diff_staged = diff_staged;
5113 		arg.ignore_whitespace = ignore_whitespace;
5114 		arg.force_text_diff = force_text_diff;
5115 		arg.f1 = f1;
5116 		arg.f2 = f2;
5117 
5118 		error = got_worktree_status(worktree, &paths, repo, 0,
5119 		    print_diff, &arg, check_cancelled, NULL);
5120 		free(id_str);
5121 		goto done;
5122 	}
5123 
5124 	if (ncommit_args == 1) {
5125 		struct got_commit_object *commit;
5126 		error = got_object_open_as_commit(&commit, repo, ids[0]);
5127 		if (error)
5128 			goto done;
5129 
5130 		labels[1] = labels[0];
5131 		ids[1] = ids[0];
5132 		if (got_object_commit_get_nparents(commit) > 0) {
5133 			const struct got_object_id_queue *pids;
5134 			struct got_object_qid *pid;
5135 			pids = got_object_commit_get_parent_ids(commit);
5136 			pid = STAILQ_FIRST(pids);
5137 			ids[0] = got_object_id_dup(&pid->id);
5138 			if (ids[0] == NULL) {
5139 				error = got_error_from_errno(
5140 				    "got_object_id_dup");
5141 				got_object_commit_close(commit);
5142 				goto done;
5143 			}
5144 			error = got_object_id_str(&labels[0], ids[0]);
5145 			if (error) {
5146 				got_object_commit_close(commit);
5147 				goto done;
5148 			}
5149 		} else {
5150 			ids[0] = NULL;
5151 			labels[0] = strdup("/dev/null");
5152 			if (labels[0] == NULL) {
5153 				error = got_error_from_errno("strdup");
5154 				got_object_commit_close(commit);
5155 				goto done;
5156 			}
5157 		}
5158 
5159 		got_object_commit_close(commit);
5160 	}
5161 
5162 	if (ncommit_args == 0 && argc > 2) {
5163 		error = got_error_msg(GOT_ERR_BAD_PATH,
5164 		    "path arguments cannot be used when diffing two objects");
5165 		goto done;
5166 	}
5167 
5168 	if (ids[0]) {
5169 		error = got_object_get_type(&type1, repo, ids[0]);
5170 		if (error)
5171 			goto done;
5172 	}
5173 
5174 	error = got_object_get_type(&type2, repo, ids[1]);
5175 	if (error)
5176 		goto done;
5177 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
5178 		error = got_error(GOT_ERR_OBJ_TYPE);
5179 		goto done;
5180 	}
5181 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 0) {
5182 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
5183 		    "path arguments cannot be used when diffing blobs");
5184 		goto done;
5185 	}
5186 
5187 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
5188 		char *in_repo_path;
5189 		struct got_pathlist_entry *new;
5190 		if (worktree) {
5191 			const char *prefix;
5192 			char *p;
5193 			error = got_worktree_resolve_path(&p, worktree,
5194 			    argv[i]);
5195 			if (error)
5196 				goto done;
5197 			prefix = got_worktree_get_path_prefix(worktree);
5198 			while (prefix[0] == '/')
5199 				prefix++;
5200 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
5201 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
5202 			    p) == -1) {
5203 				error = got_error_from_errno("asprintf");
5204 				free(p);
5205 				goto done;
5206 			}
5207 			free(p);
5208 		} else {
5209 			char *mapped_path, *s;
5210 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
5211 			if (error)
5212 				goto done;
5213 			s = mapped_path;
5214 			while (s[0] == '/')
5215 				s++;
5216 			in_repo_path = strdup(s);
5217 			if (in_repo_path == NULL) {
5218 				error = got_error_from_errno("asprintf");
5219 				free(mapped_path);
5220 				goto done;
5221 			}
5222 			free(mapped_path);
5223 
5224 		}
5225 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
5226 		if (error || new == NULL /* duplicate */)
5227 			free(in_repo_path);
5228 		if (error)
5229 			goto done;
5230 	}
5231 
5232 	if (worktree) {
5233 		/* Release work tree lock. */
5234 		got_worktree_close(worktree);
5235 		worktree = NULL;
5236 	}
5237 
5238 	fd1 = got_opentempfd();
5239 	if (fd1 == -1) {
5240 		error = got_error_from_errno("got_opentempfd");
5241 		goto done;
5242 	}
5243 
5244 	fd2 = got_opentempfd();
5245 	if (fd2 == -1) {
5246 		error = got_error_from_errno("got_opentempfd");
5247 		goto done;
5248 	}
5249 
5250 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
5251 	case GOT_OBJ_TYPE_BLOB:
5252 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
5253 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
5254 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5255 		    ignore_whitespace, force_text_diff, repo, stdout);
5256 		break;
5257 	case GOT_OBJ_TYPE_TREE:
5258 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
5259 		    ids[0], ids[1], &paths, "", "",
5260 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5261 		    ignore_whitespace, force_text_diff, repo, stdout);
5262 		break;
5263 	case GOT_OBJ_TYPE_COMMIT:
5264 		printf("diff %s %s\n", labels[0], labels[1]);
5265 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
5266 		    fd1, fd2, ids[0], ids[1], &paths,
5267 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5268 		    ignore_whitespace, force_text_diff, repo, stdout);
5269 		break;
5270 	default:
5271 		error = got_error(GOT_ERR_OBJ_TYPE);
5272 	}
5273 done:
5274 	free(labels[0]);
5275 	free(labels[1]);
5276 	free(ids[0]);
5277 	free(ids[1]);
5278 	if (worktree)
5279 		got_worktree_close(worktree);
5280 	if (repo) {
5281 		const struct got_error *close_err = got_repo_close(repo);
5282 		if (error == NULL)
5283 			error = close_err;
5284 	}
5285 	if (pack_fds) {
5286 		const struct got_error *pack_err =
5287 		    got_repo_pack_fds_close(pack_fds);
5288 		if (error == NULL)
5289 			error = pack_err;
5290 	}
5291 	TAILQ_FOREACH(pe, &paths, entry)
5292 		free((char *)pe->path);
5293 	got_pathlist_free(&paths);
5294 	got_ref_list_free(&refs);
5295 	if (f1 && fclose(f1) == EOF && error == NULL)
5296 		error = got_error_from_errno("fclose");
5297 	if (f2 && fclose(f2) == EOF && error == NULL)
5298 		error = got_error_from_errno("fclose");
5299 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5300 		error = got_error_from_errno("close");
5301 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5302 		error = got_error_from_errno("close");
5303 	return error;
5304 }
5305 
5306 __dead static void
5307 usage_blame(void)
5308 {
5309 	fprintf(stderr,
5310 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
5311 	    getprogname());
5312 	exit(1);
5313 }
5314 
5315 struct blame_line {
5316 	int annotated;
5317 	char *id_str;
5318 	char *committer;
5319 	char datebuf[11]; /* YYYY-MM-DD + NUL */
5320 };
5321 
5322 struct blame_cb_args {
5323 	struct blame_line *lines;
5324 	int nlines;
5325 	int nlines_prec;
5326 	int lineno_cur;
5327 	off_t *line_offsets;
5328 	FILE *f;
5329 	struct got_repository *repo;
5330 };
5331 
5332 static const struct got_error *
5333 blame_cb(void *arg, int nlines, int lineno,
5334     struct got_commit_object *commit, struct got_object_id *id)
5335 {
5336 	const struct got_error *err = NULL;
5337 	struct blame_cb_args *a = arg;
5338 	struct blame_line *bline;
5339 	char *line = NULL;
5340 	size_t linesize = 0;
5341 	off_t offset;
5342 	struct tm tm;
5343 	time_t committer_time;
5344 
5345 	if (nlines != a->nlines ||
5346 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
5347 		return got_error(GOT_ERR_RANGE);
5348 
5349 	if (sigint_received)
5350 		return got_error(GOT_ERR_ITER_COMPLETED);
5351 
5352 	if (lineno == -1)
5353 		return NULL; /* no change in this commit */
5354 
5355 	/* Annotate this line. */
5356 	bline = &a->lines[lineno - 1];
5357 	if (bline->annotated)
5358 		return NULL;
5359 	err = got_object_id_str(&bline->id_str, id);
5360 	if (err)
5361 		return err;
5362 
5363 	bline->committer = strdup(got_object_commit_get_committer(commit));
5364 	if (bline->committer == NULL) {
5365 		err = got_error_from_errno("strdup");
5366 		goto done;
5367 	}
5368 
5369 	committer_time = got_object_commit_get_committer_time(commit);
5370 	if (gmtime_r(&committer_time, &tm) == NULL)
5371 		return got_error_from_errno("gmtime_r");
5372 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
5373 	    &tm) == 0) {
5374 		err = got_error(GOT_ERR_NO_SPACE);
5375 		goto done;
5376 	}
5377 	bline->annotated = 1;
5378 
5379 	/* Print lines annotated so far. */
5380 	bline = &a->lines[a->lineno_cur - 1];
5381 	if (!bline->annotated)
5382 		goto done;
5383 
5384 	offset = a->line_offsets[a->lineno_cur - 1];
5385 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5386 		err = got_error_from_errno("fseeko");
5387 		goto done;
5388 	}
5389 
5390 	while (bline->annotated) {
5391 		char *smallerthan, *at, *nl, *committer;
5392 		size_t len;
5393 
5394 		if (getline(&line, &linesize, a->f) == -1) {
5395 			if (ferror(a->f))
5396 				err = got_error_from_errno("getline");
5397 			break;
5398 		}
5399 
5400 		committer = bline->committer;
5401 		smallerthan = strchr(committer, '<');
5402 		if (smallerthan && smallerthan[1] != '\0')
5403 			committer = smallerthan + 1;
5404 		at = strchr(committer, '@');
5405 		if (at)
5406 			*at = '\0';
5407 		len = strlen(committer);
5408 		if (len >= 9)
5409 			committer[8] = '\0';
5410 
5411 		nl = strchr(line, '\n');
5412 		if (nl)
5413 			*nl = '\0';
5414 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5415 		    bline->id_str, bline->datebuf, committer, line);
5416 
5417 		a->lineno_cur++;
5418 		bline = &a->lines[a->lineno_cur - 1];
5419 	}
5420 done:
5421 	free(line);
5422 	return err;
5423 }
5424 
5425 static const struct got_error *
5426 cmd_blame(int argc, char *argv[])
5427 {
5428 	const struct got_error *error;
5429 	struct got_repository *repo = NULL;
5430 	struct got_worktree *worktree = NULL;
5431 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5432 	char *link_target = NULL;
5433 	struct got_object_id *obj_id = NULL;
5434 	struct got_object_id *commit_id = NULL;
5435 	struct got_commit_object *commit = NULL;
5436 	struct got_blob_object *blob = NULL;
5437 	char *commit_id_str = NULL;
5438 	struct blame_cb_args bca;
5439 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5440 	off_t filesize;
5441 	int *pack_fds = NULL;
5442 	FILE *f1 = NULL, *f2 = NULL;
5443 
5444 	fd1 = got_opentempfd();
5445 	if (fd1 == -1)
5446 		return got_error_from_errno("got_opentempfd");
5447 
5448 	memset(&bca, 0, sizeof(bca));
5449 
5450 #ifndef PROFILE
5451 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5452 	    NULL) == -1)
5453 		err(1, "pledge");
5454 #endif
5455 
5456 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5457 		switch (ch) {
5458 		case 'c':
5459 			commit_id_str = optarg;
5460 			break;
5461 		case 'r':
5462 			repo_path = realpath(optarg, NULL);
5463 			if (repo_path == NULL)
5464 				return got_error_from_errno2("realpath",
5465 				    optarg);
5466 			got_path_strip_trailing_slashes(repo_path);
5467 			break;
5468 		default:
5469 			usage_blame();
5470 			/* NOTREACHED */
5471 		}
5472 	}
5473 
5474 	argc -= optind;
5475 	argv += optind;
5476 
5477 	if (argc == 1)
5478 		path = argv[0];
5479 	else
5480 		usage_blame();
5481 
5482 	cwd = getcwd(NULL, 0);
5483 	if (cwd == NULL) {
5484 		error = got_error_from_errno("getcwd");
5485 		goto done;
5486 	}
5487 
5488 	error = got_repo_pack_fds_open(&pack_fds);
5489 	if (error != NULL)
5490 		goto done;
5491 
5492 	if (repo_path == NULL) {
5493 		error = got_worktree_open(&worktree, cwd);
5494 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5495 			goto done;
5496 		else
5497 			error = NULL;
5498 		if (worktree) {
5499 			repo_path =
5500 			    strdup(got_worktree_get_repo_path(worktree));
5501 			if (repo_path == NULL) {
5502 				error = got_error_from_errno("strdup");
5503 				if (error)
5504 					goto done;
5505 			}
5506 		} else {
5507 			repo_path = strdup(cwd);
5508 			if (repo_path == NULL) {
5509 				error = got_error_from_errno("strdup");
5510 				goto done;
5511 			}
5512 		}
5513 	}
5514 
5515 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5516 	if (error != NULL)
5517 		goto done;
5518 
5519 	if (worktree) {
5520 		const char *prefix = got_worktree_get_path_prefix(worktree);
5521 		char *p;
5522 
5523 		error = got_worktree_resolve_path(&p, worktree, path);
5524 		if (error)
5525 			goto done;
5526 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5527 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5528 		    p) == -1) {
5529 			error = got_error_from_errno("asprintf");
5530 			free(p);
5531 			goto done;
5532 		}
5533 		free(p);
5534 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5535 	} else {
5536 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5537 		if (error)
5538 			goto done;
5539 		error = got_repo_map_path(&in_repo_path, repo, path);
5540 	}
5541 	if (error)
5542 		goto done;
5543 
5544 	if (commit_id_str == NULL) {
5545 		struct got_reference *head_ref;
5546 		error = got_ref_open(&head_ref, repo, worktree ?
5547 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5548 		if (error != NULL)
5549 			goto done;
5550 		error = got_ref_resolve(&commit_id, repo, head_ref);
5551 		got_ref_close(head_ref);
5552 		if (error != NULL)
5553 			goto done;
5554 	} else {
5555 		struct got_reflist_head refs;
5556 		TAILQ_INIT(&refs);
5557 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5558 		    NULL);
5559 		if (error)
5560 			goto done;
5561 		error = got_repo_match_object_id(&commit_id, NULL,
5562 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5563 		got_ref_list_free(&refs);
5564 		if (error)
5565 			goto done;
5566 	}
5567 
5568 	if (worktree) {
5569 		/* Release work tree lock. */
5570 		got_worktree_close(worktree);
5571 		worktree = NULL;
5572 	}
5573 
5574 	error = got_object_open_as_commit(&commit, repo, commit_id);
5575 	if (error)
5576 		goto done;
5577 
5578 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5579 	    commit, repo);
5580 	if (error)
5581 		goto done;
5582 
5583 	error = got_object_id_by_path(&obj_id, repo, commit,
5584 	    link_target ? link_target : in_repo_path);
5585 	if (error)
5586 		goto done;
5587 
5588 	error = got_object_get_type(&obj_type, repo, obj_id);
5589 	if (error)
5590 		goto done;
5591 
5592 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5593 		error = got_error_path(link_target ? link_target : in_repo_path,
5594 		    GOT_ERR_OBJ_TYPE);
5595 		goto done;
5596 	}
5597 
5598 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5599 	if (error)
5600 		goto done;
5601 	bca.f = got_opentemp();
5602 	if (bca.f == NULL) {
5603 		error = got_error_from_errno("got_opentemp");
5604 		goto done;
5605 	}
5606 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5607 	    &bca.line_offsets, bca.f, blob);
5608 	if (error || bca.nlines == 0)
5609 		goto done;
5610 
5611 	/* Don't include \n at EOF in the blame line count. */
5612 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5613 		bca.nlines--;
5614 
5615 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5616 	if (bca.lines == NULL) {
5617 		error = got_error_from_errno("calloc");
5618 		goto done;
5619 	}
5620 	bca.lineno_cur = 1;
5621 	bca.nlines_prec = 0;
5622 	i = bca.nlines;
5623 	while (i > 0) {
5624 		i /= 10;
5625 		bca.nlines_prec++;
5626 	}
5627 	bca.repo = repo;
5628 
5629 	fd2 = got_opentempfd();
5630 	if (fd2 == -1) {
5631 		error = got_error_from_errno("got_opentempfd");
5632 		goto done;
5633 	}
5634 	fd3 = got_opentempfd();
5635 	if (fd3 == -1) {
5636 		error = got_error_from_errno("got_opentempfd");
5637 		goto done;
5638 	}
5639 	f1 = got_opentemp();
5640 	if (f1 == NULL) {
5641 		error = got_error_from_errno("got_opentemp");
5642 		goto done;
5643 	}
5644 	f2 = got_opentemp();
5645 	if (f2 == NULL) {
5646 		error = got_error_from_errno("got_opentemp");
5647 		goto done;
5648 	}
5649 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5650 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5651 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5652 done:
5653 	free(in_repo_path);
5654 	free(link_target);
5655 	free(repo_path);
5656 	free(cwd);
5657 	free(commit_id);
5658 	free(obj_id);
5659 	if (commit)
5660 		got_object_commit_close(commit);
5661 
5662 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5663 		error = got_error_from_errno("close");
5664 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5665 		error = got_error_from_errno("close");
5666 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5667 		error = got_error_from_errno("close");
5668 	if (f1 && fclose(f1) == EOF && error == NULL)
5669 		error = got_error_from_errno("fclose");
5670 	if (f2 && fclose(f2) == EOF && error == NULL)
5671 		error = got_error_from_errno("fclose");
5672 
5673 	if (blob)
5674 		got_object_blob_close(blob);
5675 	if (worktree)
5676 		got_worktree_close(worktree);
5677 	if (repo) {
5678 		const struct got_error *close_err = got_repo_close(repo);
5679 		if (error == NULL)
5680 			error = close_err;
5681 	}
5682 	if (pack_fds) {
5683 		const struct got_error *pack_err =
5684 		    got_repo_pack_fds_close(pack_fds);
5685 		if (error == NULL)
5686 			error = pack_err;
5687 	}
5688 	if (bca.lines) {
5689 		for (i = 0; i < bca.nlines; i++) {
5690 			struct blame_line *bline = &bca.lines[i];
5691 			free(bline->id_str);
5692 			free(bline->committer);
5693 		}
5694 		free(bca.lines);
5695 	}
5696 	free(bca.line_offsets);
5697 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5698 		error = got_error_from_errno("fclose");
5699 	return error;
5700 }
5701 
5702 __dead static void
5703 usage_tree(void)
5704 {
5705 	fprintf(stderr,
5706 	    "usage: %s tree [-c commit] [-r repository-path] [-iR] [path]\n",
5707 	    getprogname());
5708 	exit(1);
5709 }
5710 
5711 static const struct got_error *
5712 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5713     const char *root_path, struct got_repository *repo)
5714 {
5715 	const struct got_error *err = NULL;
5716 	int is_root_path = (strcmp(path, root_path) == 0);
5717 	const char *modestr = "";
5718 	mode_t mode = got_tree_entry_get_mode(te);
5719 	char *link_target = NULL;
5720 
5721 	path += strlen(root_path);
5722 	while (path[0] == '/')
5723 		path++;
5724 
5725 	if (got_object_tree_entry_is_submodule(te))
5726 		modestr = "$";
5727 	else if (S_ISLNK(mode)) {
5728 		int i;
5729 
5730 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5731 		if (err)
5732 			return err;
5733 		for (i = 0; i < strlen(link_target); i++) {
5734 			if (!isprint((unsigned char)link_target[i]))
5735 				link_target[i] = '?';
5736 		}
5737 
5738 		modestr = "@";
5739 	}
5740 	else if (S_ISDIR(mode))
5741 		modestr = "/";
5742 	else if (mode & S_IXUSR)
5743 		modestr = "*";
5744 
5745 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5746 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5747 	    link_target ? " -> ": "", link_target ? link_target : "");
5748 
5749 	free(link_target);
5750 	return NULL;
5751 }
5752 
5753 static const struct got_error *
5754 print_tree(const char *path, struct got_commit_object *commit,
5755     int show_ids, int recurse, const char *root_path,
5756     struct got_repository *repo)
5757 {
5758 	const struct got_error *err = NULL;
5759 	struct got_object_id *tree_id = NULL;
5760 	struct got_tree_object *tree = NULL;
5761 	int nentries, i;
5762 
5763 	err = got_object_id_by_path(&tree_id, repo, commit, path);
5764 	if (err)
5765 		goto done;
5766 
5767 	err = got_object_open_as_tree(&tree, repo, tree_id);
5768 	if (err)
5769 		goto done;
5770 	nentries = got_object_tree_get_nentries(tree);
5771 	for (i = 0; i < nentries; i++) {
5772 		struct got_tree_entry *te;
5773 		char *id = NULL;
5774 
5775 		if (sigint_received || sigpipe_received)
5776 			break;
5777 
5778 		te = got_object_tree_get_entry(tree, i);
5779 		if (show_ids) {
5780 			char *id_str;
5781 			err = got_object_id_str(&id_str,
5782 			    got_tree_entry_get_id(te));
5783 			if (err)
5784 				goto done;
5785 			if (asprintf(&id, "%s ", id_str) == -1) {
5786 				err = got_error_from_errno("asprintf");
5787 				free(id_str);
5788 				goto done;
5789 			}
5790 			free(id_str);
5791 		}
5792 		err = print_entry(te, id, path, root_path, repo);
5793 		free(id);
5794 		if (err)
5795 			goto done;
5796 
5797 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
5798 			char *child_path;
5799 			if (asprintf(&child_path, "%s%s%s", path,
5800 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
5801 			    got_tree_entry_get_name(te)) == -1) {
5802 				err = got_error_from_errno("asprintf");
5803 				goto done;
5804 			}
5805 			err = print_tree(child_path, commit, show_ids, 1,
5806 			    root_path, repo);
5807 			free(child_path);
5808 			if (err)
5809 				goto done;
5810 		}
5811 	}
5812 done:
5813 	if (tree)
5814 		got_object_tree_close(tree);
5815 	free(tree_id);
5816 	return err;
5817 }
5818 
5819 static const struct got_error *
5820 cmd_tree(int argc, char *argv[])
5821 {
5822 	const struct got_error *error;
5823 	struct got_repository *repo = NULL;
5824 	struct got_worktree *worktree = NULL;
5825 	const char *path, *refname = NULL;
5826 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5827 	struct got_object_id *commit_id = NULL;
5828 	struct got_commit_object *commit = NULL;
5829 	char *commit_id_str = NULL;
5830 	int show_ids = 0, recurse = 0;
5831 	int ch;
5832 	int *pack_fds = NULL;
5833 
5834 #ifndef PROFILE
5835 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5836 	    NULL) == -1)
5837 		err(1, "pledge");
5838 #endif
5839 
5840 	while ((ch = getopt(argc, argv, "c:r:iR")) != -1) {
5841 		switch (ch) {
5842 		case 'c':
5843 			commit_id_str = optarg;
5844 			break;
5845 		case 'r':
5846 			repo_path = realpath(optarg, NULL);
5847 			if (repo_path == NULL)
5848 				return got_error_from_errno2("realpath",
5849 				    optarg);
5850 			got_path_strip_trailing_slashes(repo_path);
5851 			break;
5852 		case 'i':
5853 			show_ids = 1;
5854 			break;
5855 		case 'R':
5856 			recurse = 1;
5857 			break;
5858 		default:
5859 			usage_tree();
5860 			/* NOTREACHED */
5861 		}
5862 	}
5863 
5864 	argc -= optind;
5865 	argv += optind;
5866 
5867 	if (argc == 1)
5868 		path = argv[0];
5869 	else if (argc > 1)
5870 		usage_tree();
5871 	else
5872 		path = NULL;
5873 
5874 	cwd = getcwd(NULL, 0);
5875 	if (cwd == NULL) {
5876 		error = got_error_from_errno("getcwd");
5877 		goto done;
5878 	}
5879 
5880 	error = got_repo_pack_fds_open(&pack_fds);
5881 	if (error != NULL)
5882 		goto done;
5883 
5884 	if (repo_path == NULL) {
5885 		error = got_worktree_open(&worktree, cwd);
5886 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5887 			goto done;
5888 		else
5889 			error = NULL;
5890 		if (worktree) {
5891 			repo_path =
5892 			    strdup(got_worktree_get_repo_path(worktree));
5893 			if (repo_path == NULL)
5894 				error = got_error_from_errno("strdup");
5895 			if (error)
5896 				goto done;
5897 		} else {
5898 			repo_path = strdup(cwd);
5899 			if (repo_path == NULL) {
5900 				error = got_error_from_errno("strdup");
5901 				goto done;
5902 			}
5903 		}
5904 	}
5905 
5906 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5907 	if (error != NULL)
5908 		goto done;
5909 
5910 	if (worktree) {
5911 		const char *prefix = got_worktree_get_path_prefix(worktree);
5912 		char *p;
5913 
5914 		if (path == NULL)
5915 			path = "";
5916 		error = got_worktree_resolve_path(&p, worktree, path);
5917 		if (error)
5918 			goto done;
5919 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5920 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
5921 		    p) == -1) {
5922 			error = got_error_from_errno("asprintf");
5923 			free(p);
5924 			goto done;
5925 		}
5926 		free(p);
5927 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5928 		if (error)
5929 			goto done;
5930 	} else {
5931 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5932 		if (error)
5933 			goto done;
5934 		if (path == NULL)
5935 			path = "/";
5936 		error = got_repo_map_path(&in_repo_path, repo, path);
5937 		if (error != NULL)
5938 			goto done;
5939 	}
5940 
5941 	if (commit_id_str == NULL) {
5942 		struct got_reference *head_ref;
5943 		if (worktree)
5944 			refname = got_worktree_get_head_ref_name(worktree);
5945 		else
5946 			refname = GOT_REF_HEAD;
5947 		error = got_ref_open(&head_ref, repo, refname, 0);
5948 		if (error != NULL)
5949 			goto done;
5950 		error = got_ref_resolve(&commit_id, repo, head_ref);
5951 		got_ref_close(head_ref);
5952 		if (error != NULL)
5953 			goto done;
5954 	} else {
5955 		struct got_reflist_head refs;
5956 		TAILQ_INIT(&refs);
5957 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5958 		    NULL);
5959 		if (error)
5960 			goto done;
5961 		error = got_repo_match_object_id(&commit_id, NULL,
5962 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5963 		got_ref_list_free(&refs);
5964 		if (error)
5965 			goto done;
5966 	}
5967 
5968 	if (worktree) {
5969 		/* Release work tree lock. */
5970 		got_worktree_close(worktree);
5971 		worktree = NULL;
5972 	}
5973 
5974 	error = got_object_open_as_commit(&commit, repo, commit_id);
5975 	if (error)
5976 		goto done;
5977 
5978 	error = print_tree(in_repo_path, commit, show_ids, recurse,
5979 	    in_repo_path, repo);
5980 done:
5981 	free(in_repo_path);
5982 	free(repo_path);
5983 	free(cwd);
5984 	free(commit_id);
5985 	if (commit)
5986 		got_object_commit_close(commit);
5987 	if (worktree)
5988 		got_worktree_close(worktree);
5989 	if (repo) {
5990 		const struct got_error *close_err = got_repo_close(repo);
5991 		if (error == NULL)
5992 			error = close_err;
5993 	}
5994 	if (pack_fds) {
5995 		const struct got_error *pack_err =
5996 		    got_repo_pack_fds_close(pack_fds);
5997 		if (error == NULL)
5998 			error = pack_err;
5999 	}
6000 	return error;
6001 }
6002 
6003 __dead static void
6004 usage_status(void)
6005 {
6006 	fprintf(stderr, "usage: %s status [-I] [-s status-codes ] "
6007 	    "[-S status-codes] [path ...]\n", getprogname());
6008 	exit(1);
6009 }
6010 
6011 struct got_status_arg {
6012 	char *status_codes;
6013 	int suppress;
6014 };
6015 
6016 static const struct got_error *
6017 print_status(void *arg, unsigned char status, unsigned char staged_status,
6018     const char *path, struct got_object_id *blob_id,
6019     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
6020     int dirfd, const char *de_name)
6021 {
6022 	struct got_status_arg *st = arg;
6023 
6024 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6025 		status = GOT_STATUS_NO_CHANGE;
6026 	if (st != NULL && st->status_codes) {
6027 		size_t ncodes = strlen(st->status_codes);
6028 		int i, j = 0;
6029 
6030 		for (i = 0; i < ncodes ; i++) {
6031 			if (st->suppress) {
6032 				if (status == st->status_codes[i] ||
6033 				    staged_status == st->status_codes[i]) {
6034 					j++;
6035 					continue;
6036 				}
6037 			} else {
6038 				if (status == st->status_codes[i] ||
6039 				    staged_status == st->status_codes[i])
6040 					break;
6041 			}
6042 		}
6043 
6044 		if (st->suppress && j == 0)
6045 			goto print;
6046 
6047 		if (i == ncodes)
6048 			return NULL;
6049 	}
6050 print:
6051 	printf("%c%c %s\n", status, staged_status, path);
6052 	return NULL;
6053 }
6054 
6055 static const struct got_error *
6056 cmd_status(int argc, char *argv[])
6057 {
6058 	const struct got_error *error = NULL;
6059 	struct got_repository *repo = NULL;
6060 	struct got_worktree *worktree = NULL;
6061 	struct got_status_arg st;
6062 	char *cwd = NULL;
6063 	struct got_pathlist_head paths;
6064 	struct got_pathlist_entry *pe;
6065 	int ch, i, no_ignores = 0;
6066 	int *pack_fds = NULL;
6067 
6068 	TAILQ_INIT(&paths);
6069 
6070 	memset(&st, 0, sizeof(st));
6071 	st.status_codes = NULL;
6072 	st.suppress = 0;
6073 
6074 	while ((ch = getopt(argc, argv, "Is:S:")) != -1) {
6075 		switch (ch) {
6076 		case 'I':
6077 			no_ignores = 1;
6078 			break;
6079 		case 'S':
6080 			if (st.status_codes != NULL && st.suppress == 0)
6081 				option_conflict('S', 's');
6082 			st.suppress = 1;
6083 			/* fallthrough */
6084 		case 's':
6085 			for (i = 0; i < strlen(optarg); i++) {
6086 				switch (optarg[i]) {
6087 				case GOT_STATUS_MODIFY:
6088 				case GOT_STATUS_ADD:
6089 				case GOT_STATUS_DELETE:
6090 				case GOT_STATUS_CONFLICT:
6091 				case GOT_STATUS_MISSING:
6092 				case GOT_STATUS_OBSTRUCTED:
6093 				case GOT_STATUS_UNVERSIONED:
6094 				case GOT_STATUS_MODE_CHANGE:
6095 				case GOT_STATUS_NONEXISTENT:
6096 					break;
6097 				default:
6098 					errx(1, "invalid status code '%c'",
6099 					    optarg[i]);
6100 				}
6101 			}
6102 			if (ch == 's' && st.suppress)
6103 				option_conflict('s', 'S');
6104 			st.status_codes = optarg;
6105 			break;
6106 		default:
6107 			usage_status();
6108 			/* NOTREACHED */
6109 		}
6110 	}
6111 
6112 	argc -= optind;
6113 	argv += optind;
6114 
6115 #ifndef PROFILE
6116 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6117 	    NULL) == -1)
6118 		err(1, "pledge");
6119 #endif
6120 	cwd = getcwd(NULL, 0);
6121 	if (cwd == NULL) {
6122 		error = got_error_from_errno("getcwd");
6123 		goto done;
6124 	}
6125 
6126 	error = got_repo_pack_fds_open(&pack_fds);
6127 	if (error != NULL)
6128 		goto done;
6129 
6130 	error = got_worktree_open(&worktree, cwd);
6131 	if (error) {
6132 		if (error->code == GOT_ERR_NOT_WORKTREE)
6133 			error = wrap_not_worktree_error(error, "status", cwd);
6134 		goto done;
6135 	}
6136 
6137 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6138 	    NULL, pack_fds);
6139 	if (error != NULL)
6140 		goto done;
6141 
6142 	error = apply_unveil(got_repo_get_path(repo), 1,
6143 	    got_worktree_get_root_path(worktree));
6144 	if (error)
6145 		goto done;
6146 
6147 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6148 	if (error)
6149 		goto done;
6150 
6151 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
6152 	    print_status, &st, check_cancelled, NULL);
6153 done:
6154 	if (pack_fds) {
6155 		const struct got_error *pack_err =
6156 		    got_repo_pack_fds_close(pack_fds);
6157 		if (error == NULL)
6158 			error = pack_err;
6159 	}
6160 
6161 	TAILQ_FOREACH(pe, &paths, entry)
6162 		free((char *)pe->path);
6163 	got_pathlist_free(&paths);
6164 	free(cwd);
6165 	return error;
6166 }
6167 
6168 __dead static void
6169 usage_ref(void)
6170 {
6171 	fprintf(stderr,
6172 	    "usage: %s ref [-r repository] [-l] [-t] [-c object] "
6173 	        "[-s reference] [-d] [name]\n",
6174 	    getprogname());
6175 	exit(1);
6176 }
6177 
6178 static const struct got_error *
6179 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
6180 {
6181 	static const struct got_error *err = NULL;
6182 	struct got_reflist_head refs;
6183 	struct got_reflist_entry *re;
6184 
6185 	TAILQ_INIT(&refs);
6186 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
6187 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6188 	    repo);
6189 	if (err)
6190 		return err;
6191 
6192 	TAILQ_FOREACH(re, &refs, entry) {
6193 		char *refstr;
6194 		refstr = got_ref_to_str(re->ref);
6195 		if (refstr == NULL) {
6196 			err = got_error_from_errno("got_ref_to_str");
6197 			break;
6198 		}
6199 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
6200 		free(refstr);
6201 	}
6202 
6203 	got_ref_list_free(&refs);
6204 	return err;
6205 }
6206 
6207 static const struct got_error *
6208 delete_ref_by_name(struct got_repository *repo, const char *refname)
6209 {
6210 	const struct got_error *err;
6211 	struct got_reference *ref;
6212 
6213 	err = got_ref_open(&ref, repo, refname, 0);
6214 	if (err)
6215 		return err;
6216 
6217 	err = delete_ref(repo, ref);
6218 	got_ref_close(ref);
6219 	return err;
6220 }
6221 
6222 static const struct got_error *
6223 add_ref(struct got_repository *repo, const char *refname, const char *target)
6224 {
6225 	const struct got_error *err = NULL;
6226 	struct got_object_id *id = NULL;
6227 	struct got_reference *ref = NULL;
6228 	struct got_reflist_head refs;
6229 
6230 	/*
6231 	 * Don't let the user create a reference name with a leading '-'.
6232 	 * While technically a valid reference name, this case is usually
6233 	 * an unintended typo.
6234 	 */
6235 	if (refname[0] == '-')
6236 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6237 
6238 	TAILQ_INIT(&refs);
6239 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6240 	if (err)
6241 		goto done;
6242 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
6243 	    &refs, repo);
6244 	got_ref_list_free(&refs);
6245 	if (err)
6246 		goto done;
6247 
6248 	err = got_ref_alloc(&ref, refname, id);
6249 	if (err)
6250 		goto done;
6251 
6252 	err = got_ref_write(ref, repo);
6253 done:
6254 	if (ref)
6255 		got_ref_close(ref);
6256 	free(id);
6257 	return err;
6258 }
6259 
6260 static const struct got_error *
6261 add_symref(struct got_repository *repo, const char *refname, const char *target)
6262 {
6263 	const struct got_error *err = NULL;
6264 	struct got_reference *ref = NULL;
6265 	struct got_reference *target_ref = NULL;
6266 
6267 	/*
6268 	 * Don't let the user create a reference name with a leading '-'.
6269 	 * While technically a valid reference name, this case is usually
6270 	 * an unintended typo.
6271 	 */
6272 	if (refname[0] == '-')
6273 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6274 
6275 	err = got_ref_open(&target_ref, repo, target, 0);
6276 	if (err)
6277 		return err;
6278 
6279 	err = got_ref_alloc_symref(&ref, refname, target_ref);
6280 	if (err)
6281 		goto done;
6282 
6283 	err = got_ref_write(ref, repo);
6284 done:
6285 	if (target_ref)
6286 		got_ref_close(target_ref);
6287 	if (ref)
6288 		got_ref_close(ref);
6289 	return err;
6290 }
6291 
6292 static const struct got_error *
6293 cmd_ref(int argc, char *argv[])
6294 {
6295 	const struct got_error *error = NULL;
6296 	struct got_repository *repo = NULL;
6297 	struct got_worktree *worktree = NULL;
6298 	char *cwd = NULL, *repo_path = NULL;
6299 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
6300 	const char *obj_arg = NULL, *symref_target= NULL;
6301 	char *refname = NULL;
6302 	int *pack_fds = NULL;
6303 
6304 	while ((ch = getopt(argc, argv, "c:dr:ls:t")) != -1) {
6305 		switch (ch) {
6306 		case 'c':
6307 			obj_arg = optarg;
6308 			break;
6309 		case 'd':
6310 			do_delete = 1;
6311 			break;
6312 		case 'r':
6313 			repo_path = realpath(optarg, NULL);
6314 			if (repo_path == NULL)
6315 				return got_error_from_errno2("realpath",
6316 				    optarg);
6317 			got_path_strip_trailing_slashes(repo_path);
6318 			break;
6319 		case 'l':
6320 			do_list = 1;
6321 			break;
6322 		case 's':
6323 			symref_target = optarg;
6324 			break;
6325 		case 't':
6326 			sort_by_time = 1;
6327 			break;
6328 		default:
6329 			usage_ref();
6330 			/* NOTREACHED */
6331 		}
6332 	}
6333 
6334 	if (obj_arg && do_list)
6335 		option_conflict('c', 'l');
6336 	if (obj_arg && do_delete)
6337 		option_conflict('c', 'd');
6338 	if (obj_arg && symref_target)
6339 		option_conflict('c', 's');
6340 	if (symref_target && do_delete)
6341 		option_conflict('s', 'd');
6342 	if (symref_target && do_list)
6343 		option_conflict('s', 'l');
6344 	if (do_delete && do_list)
6345 		option_conflict('d', 'l');
6346 	if (sort_by_time && !do_list)
6347 		errx(1, "-t option requires -l option");
6348 
6349 	argc -= optind;
6350 	argv += optind;
6351 
6352 	if (do_list) {
6353 		if (argc != 0 && argc != 1)
6354 			usage_ref();
6355 		if (argc == 1) {
6356 			refname = strdup(argv[0]);
6357 			if (refname == NULL) {
6358 				error = got_error_from_errno("strdup");
6359 				goto done;
6360 			}
6361 		}
6362 	} else {
6363 		if (argc != 1)
6364 			usage_ref();
6365 		refname = strdup(argv[0]);
6366 		if (refname == NULL) {
6367 			error = got_error_from_errno("strdup");
6368 			goto done;
6369 		}
6370 	}
6371 
6372 	if (refname)
6373 		got_path_strip_trailing_slashes(refname);
6374 
6375 #ifndef PROFILE
6376 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6377 	    "sendfd unveil", NULL) == -1)
6378 		err(1, "pledge");
6379 #endif
6380 	cwd = getcwd(NULL, 0);
6381 	if (cwd == NULL) {
6382 		error = got_error_from_errno("getcwd");
6383 		goto done;
6384 	}
6385 
6386 	error = got_repo_pack_fds_open(&pack_fds);
6387 	if (error != NULL)
6388 		goto done;
6389 
6390 	if (repo_path == NULL) {
6391 		error = got_worktree_open(&worktree, cwd);
6392 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6393 			goto done;
6394 		else
6395 			error = NULL;
6396 		if (worktree) {
6397 			repo_path =
6398 			    strdup(got_worktree_get_repo_path(worktree));
6399 			if (repo_path == NULL)
6400 				error = got_error_from_errno("strdup");
6401 			if (error)
6402 				goto done;
6403 		} else {
6404 			repo_path = strdup(cwd);
6405 			if (repo_path == NULL) {
6406 				error = got_error_from_errno("strdup");
6407 				goto done;
6408 			}
6409 		}
6410 	}
6411 
6412 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6413 	if (error != NULL)
6414 		goto done;
6415 
6416 #ifndef PROFILE
6417 	if (do_list) {
6418 		/* Remove "cpath" promise. */
6419 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6420 		    NULL) == -1)
6421 			err(1, "pledge");
6422 	}
6423 #endif
6424 
6425 	error = apply_unveil(got_repo_get_path(repo), do_list,
6426 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6427 	if (error)
6428 		goto done;
6429 
6430 	if (do_list)
6431 		error = list_refs(repo, refname, sort_by_time);
6432 	else if (do_delete)
6433 		error = delete_ref_by_name(repo, refname);
6434 	else if (symref_target)
6435 		error = add_symref(repo, refname, symref_target);
6436 	else {
6437 		if (obj_arg == NULL)
6438 			usage_ref();
6439 		error = add_ref(repo, refname, obj_arg);
6440 	}
6441 done:
6442 	free(refname);
6443 	if (repo) {
6444 		const struct got_error *close_err = got_repo_close(repo);
6445 		if (error == NULL)
6446 			error = close_err;
6447 	}
6448 	if (worktree)
6449 		got_worktree_close(worktree);
6450 	if (pack_fds) {
6451 		const struct got_error *pack_err =
6452 		    got_repo_pack_fds_close(pack_fds);
6453 		if (error == NULL)
6454 			error = pack_err;
6455 	}
6456 	free(cwd);
6457 	free(repo_path);
6458 	return error;
6459 }
6460 
6461 __dead static void
6462 usage_branch(void)
6463 {
6464 	fprintf(stderr,
6465 	    "usage: %s branch [-c commit] [-d] [-r repository] [-l] [-t] "
6466 	        "[-n] [name]\n", getprogname());
6467 	exit(1);
6468 }
6469 
6470 static const struct got_error *
6471 list_branch(struct got_repository *repo, struct got_worktree *worktree,
6472     struct got_reference *ref)
6473 {
6474 	const struct got_error *err = NULL;
6475 	const char *refname, *marker = "  ";
6476 	char *refstr;
6477 
6478 	refname = got_ref_get_name(ref);
6479 	if (worktree && strcmp(refname,
6480 	    got_worktree_get_head_ref_name(worktree)) == 0) {
6481 		struct got_object_id *id = NULL;
6482 
6483 		err = got_ref_resolve(&id, repo, ref);
6484 		if (err)
6485 			return err;
6486 		if (got_object_id_cmp(id,
6487 		    got_worktree_get_base_commit_id(worktree)) == 0)
6488 			marker = "* ";
6489 		else
6490 			marker = "~ ";
6491 		free(id);
6492 	}
6493 
6494 	if (strncmp(refname, "refs/heads/", 11) == 0)
6495 		refname += 11;
6496 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6497 		refname += 18;
6498 	if (strncmp(refname, "refs/remotes/", 13) == 0)
6499 		refname += 13;
6500 
6501 	refstr = got_ref_to_str(ref);
6502 	if (refstr == NULL)
6503 		return got_error_from_errno("got_ref_to_str");
6504 
6505 	printf("%s%s: %s\n", marker, refname, refstr);
6506 	free(refstr);
6507 	return NULL;
6508 }
6509 
6510 static const struct got_error *
6511 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
6512 {
6513 	const char *refname;
6514 
6515 	if (worktree == NULL)
6516 		return got_error(GOT_ERR_NOT_WORKTREE);
6517 
6518 	refname = got_worktree_get_head_ref_name(worktree);
6519 
6520 	if (strncmp(refname, "refs/heads/", 11) == 0)
6521 		refname += 11;
6522 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6523 		refname += 18;
6524 
6525 	printf("%s\n", refname);
6526 
6527 	return NULL;
6528 }
6529 
6530 static const struct got_error *
6531 list_branches(struct got_repository *repo, struct got_worktree *worktree,
6532     int sort_by_time)
6533 {
6534 	static const struct got_error *err = NULL;
6535 	struct got_reflist_head refs;
6536 	struct got_reflist_entry *re;
6537 	struct got_reference *temp_ref = NULL;
6538 	int rebase_in_progress, histedit_in_progress;
6539 
6540 	TAILQ_INIT(&refs);
6541 
6542 	if (worktree) {
6543 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
6544 		    worktree);
6545 		if (err)
6546 			return err;
6547 
6548 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
6549 		    worktree);
6550 		if (err)
6551 			return err;
6552 
6553 		if (rebase_in_progress || histedit_in_progress) {
6554 			err = got_ref_open(&temp_ref, repo,
6555 			    got_worktree_get_head_ref_name(worktree), 0);
6556 			if (err)
6557 				return err;
6558 			list_branch(repo, worktree, temp_ref);
6559 			got_ref_close(temp_ref);
6560 		}
6561 	}
6562 
6563 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
6564 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6565 	    repo);
6566 	if (err)
6567 		return err;
6568 
6569 	TAILQ_FOREACH(re, &refs, entry)
6570 		list_branch(repo, worktree, re->ref);
6571 
6572 	got_ref_list_free(&refs);
6573 
6574 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
6575 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6576 	    repo);
6577 	if (err)
6578 		return err;
6579 
6580 	TAILQ_FOREACH(re, &refs, entry)
6581 		list_branch(repo, worktree, re->ref);
6582 
6583 	got_ref_list_free(&refs);
6584 
6585 	return NULL;
6586 }
6587 
6588 static const struct got_error *
6589 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
6590     const char *branch_name)
6591 {
6592 	const struct got_error *err = NULL;
6593 	struct got_reference *ref = NULL;
6594 	char *refname, *remote_refname = NULL;
6595 
6596 	if (strncmp(branch_name, "refs/", 5) == 0)
6597 		branch_name += 5;
6598 	if (strncmp(branch_name, "heads/", 6) == 0)
6599 		branch_name += 6;
6600 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6601 		branch_name += 8;
6602 
6603 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6604 		return got_error_from_errno("asprintf");
6605 
6606 	if (asprintf(&remote_refname, "refs/remotes/%s",
6607 	    branch_name) == -1) {
6608 		err = got_error_from_errno("asprintf");
6609 		goto done;
6610 	}
6611 
6612 	err = got_ref_open(&ref, repo, refname, 0);
6613 	if (err) {
6614 		const struct got_error *err2;
6615 		if (err->code != GOT_ERR_NOT_REF)
6616 			goto done;
6617 		/*
6618 		 * Keep 'err' intact such that if neither branch exists
6619 		 * we report "refs/heads" rather than "refs/remotes" in
6620 		 * our error message.
6621 		 */
6622 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6623 		if (err2)
6624 			goto done;
6625 		err = NULL;
6626 	}
6627 
6628 	if (worktree &&
6629 	    strcmp(got_worktree_get_head_ref_name(worktree),
6630 	    got_ref_get_name(ref)) == 0) {
6631 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6632 		    "will not delete this work tree's current branch");
6633 		goto done;
6634 	}
6635 
6636 	err = delete_ref(repo, ref);
6637 done:
6638 	if (ref)
6639 		got_ref_close(ref);
6640 	free(refname);
6641 	free(remote_refname);
6642 	return err;
6643 }
6644 
6645 static const struct got_error *
6646 add_branch(struct got_repository *repo, const char *branch_name,
6647     struct got_object_id *base_commit_id)
6648 {
6649 	const struct got_error *err = NULL;
6650 	struct got_reference *ref = NULL;
6651 	char *base_refname = NULL, *refname = NULL;
6652 
6653 	/*
6654 	 * Don't let the user create a branch name with a leading '-'.
6655 	 * While technically a valid reference name, this case is usually
6656 	 * an unintended typo.
6657 	 */
6658 	if (branch_name[0] == '-')
6659 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6660 
6661 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6662 		branch_name += 11;
6663 
6664 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6665 		err = got_error_from_errno("asprintf");
6666 		goto done;
6667 	}
6668 
6669 	err = got_ref_open(&ref, repo, refname, 0);
6670 	if (err == NULL) {
6671 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6672 		goto done;
6673 	} else if (err->code != GOT_ERR_NOT_REF)
6674 		goto done;
6675 
6676 	err = got_ref_alloc(&ref, refname, base_commit_id);
6677 	if (err)
6678 		goto done;
6679 
6680 	err = got_ref_write(ref, repo);
6681 done:
6682 	if (ref)
6683 		got_ref_close(ref);
6684 	free(base_refname);
6685 	free(refname);
6686 	return err;
6687 }
6688 
6689 static const struct got_error *
6690 cmd_branch(int argc, char *argv[])
6691 {
6692 	const struct got_error *error = NULL;
6693 	struct got_repository *repo = NULL;
6694 	struct got_worktree *worktree = NULL;
6695 	char *cwd = NULL, *repo_path = NULL;
6696 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
6697 	const char *delref = NULL, *commit_id_arg = NULL;
6698 	struct got_reference *ref = NULL;
6699 	struct got_pathlist_head paths;
6700 	struct got_pathlist_entry *pe;
6701 	struct got_object_id *commit_id = NULL;
6702 	char *commit_id_str = NULL;
6703 	int *pack_fds = NULL;
6704 
6705 	TAILQ_INIT(&paths);
6706 
6707 	while ((ch = getopt(argc, argv, "c:d:r:lnt")) != -1) {
6708 		switch (ch) {
6709 		case 'c':
6710 			commit_id_arg = optarg;
6711 			break;
6712 		case 'd':
6713 			delref = optarg;
6714 			break;
6715 		case 'r':
6716 			repo_path = realpath(optarg, NULL);
6717 			if (repo_path == NULL)
6718 				return got_error_from_errno2("realpath",
6719 				    optarg);
6720 			got_path_strip_trailing_slashes(repo_path);
6721 			break;
6722 		case 'l':
6723 			do_list = 1;
6724 			break;
6725 		case 'n':
6726 			do_update = 0;
6727 			break;
6728 		case 't':
6729 			sort_by_time = 1;
6730 			break;
6731 		default:
6732 			usage_branch();
6733 			/* NOTREACHED */
6734 		}
6735 	}
6736 
6737 	if (do_list && delref)
6738 		option_conflict('l', 'd');
6739 	if (sort_by_time && !do_list)
6740 		errx(1, "-t option requires -l option");
6741 
6742 	argc -= optind;
6743 	argv += optind;
6744 
6745 	if (!do_list && !delref && argc == 0)
6746 		do_show = 1;
6747 
6748 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
6749 		errx(1, "-c option can only be used when creating a branch");
6750 
6751 	if (do_list || delref) {
6752 		if (argc > 0)
6753 			usage_branch();
6754 	} else if (!do_show && argc != 1)
6755 		usage_branch();
6756 
6757 #ifndef PROFILE
6758 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6759 	    "sendfd unveil", NULL) == -1)
6760 		err(1, "pledge");
6761 #endif
6762 	cwd = getcwd(NULL, 0);
6763 	if (cwd == NULL) {
6764 		error = got_error_from_errno("getcwd");
6765 		goto done;
6766 	}
6767 
6768 	error = got_repo_pack_fds_open(&pack_fds);
6769 	if (error != NULL)
6770 		goto done;
6771 
6772 	if (repo_path == NULL) {
6773 		error = got_worktree_open(&worktree, cwd);
6774 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6775 			goto done;
6776 		else
6777 			error = NULL;
6778 		if (worktree) {
6779 			repo_path =
6780 			    strdup(got_worktree_get_repo_path(worktree));
6781 			if (repo_path == NULL)
6782 				error = got_error_from_errno("strdup");
6783 			if (error)
6784 				goto done;
6785 		} else {
6786 			repo_path = strdup(cwd);
6787 			if (repo_path == NULL) {
6788 				error = got_error_from_errno("strdup");
6789 				goto done;
6790 			}
6791 		}
6792 	}
6793 
6794 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6795 	if (error != NULL)
6796 		goto done;
6797 
6798 #ifndef PROFILE
6799 	if (do_list || do_show) {
6800 		/* Remove "cpath" promise. */
6801 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6802 		    NULL) == -1)
6803 			err(1, "pledge");
6804 	}
6805 #endif
6806 
6807 	error = apply_unveil(got_repo_get_path(repo), do_list,
6808 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6809 	if (error)
6810 		goto done;
6811 
6812 	if (do_show)
6813 		error = show_current_branch(repo, worktree);
6814 	else if (do_list)
6815 		error = list_branches(repo, worktree, sort_by_time);
6816 	else if (delref)
6817 		error = delete_branch(repo, worktree, delref);
6818 	else {
6819 		struct got_reflist_head refs;
6820 		TAILQ_INIT(&refs);
6821 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6822 		    NULL);
6823 		if (error)
6824 			goto done;
6825 		if (commit_id_arg == NULL)
6826 			commit_id_arg = worktree ?
6827 			    got_worktree_get_head_ref_name(worktree) :
6828 			    GOT_REF_HEAD;
6829 		error = got_repo_match_object_id(&commit_id, NULL,
6830 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6831 		got_ref_list_free(&refs);
6832 		if (error)
6833 			goto done;
6834 		error = add_branch(repo, argv[0], commit_id);
6835 		if (error)
6836 			goto done;
6837 		if (worktree && do_update) {
6838 			struct got_update_progress_arg upa;
6839 			char *branch_refname = NULL;
6840 
6841 			error = got_object_id_str(&commit_id_str, commit_id);
6842 			if (error)
6843 				goto done;
6844 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
6845 			    worktree);
6846 			if (error)
6847 				goto done;
6848 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
6849 			    == -1) {
6850 				error = got_error_from_errno("asprintf");
6851 				goto done;
6852 			}
6853 			error = got_ref_open(&ref, repo, branch_refname, 0);
6854 			free(branch_refname);
6855 			if (error)
6856 				goto done;
6857 			error = switch_head_ref(ref, commit_id, worktree,
6858 			    repo);
6859 			if (error)
6860 				goto done;
6861 			error = got_worktree_set_base_commit_id(worktree, repo,
6862 			    commit_id);
6863 			if (error)
6864 				goto done;
6865 			memset(&upa, 0, sizeof(upa));
6866 			error = got_worktree_checkout_files(worktree, &paths,
6867 			    repo, update_progress, &upa, check_cancelled,
6868 			    NULL);
6869 			if (error)
6870 				goto done;
6871 			if (upa.did_something) {
6872 				printf("Updated to %s: %s\n",
6873 				    got_worktree_get_head_ref_name(worktree),
6874 				    commit_id_str);
6875 			}
6876 			print_update_progress_stats(&upa);
6877 		}
6878 	}
6879 done:
6880 	if (ref)
6881 		got_ref_close(ref);
6882 	if (repo) {
6883 		const struct got_error *close_err = got_repo_close(repo);
6884 		if (error == NULL)
6885 			error = close_err;
6886 	}
6887 	if (worktree)
6888 		got_worktree_close(worktree);
6889 	if (pack_fds) {
6890 		const struct got_error *pack_err =
6891 		    got_repo_pack_fds_close(pack_fds);
6892 		if (error == NULL)
6893 			error = pack_err;
6894 	}
6895 	free(cwd);
6896 	free(repo_path);
6897 	free(commit_id);
6898 	free(commit_id_str);
6899 	TAILQ_FOREACH(pe, &paths, entry)
6900 		free((char *)pe->path);
6901 	got_pathlist_free(&paths);
6902 	return error;
6903 }
6904 
6905 
6906 __dead static void
6907 usage_tag(void)
6908 {
6909 	fprintf(stderr,
6910 	    "usage: %s tag [-c commit] [-r repository] [-l] "
6911 	        "[-m message] [-s signer-id] [-v] [-V] name\n",
6912 	        getprogname());
6913 	exit(1);
6914 }
6915 
6916 #if 0
6917 static const struct got_error *
6918 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
6919 {
6920 	const struct got_error *err = NULL;
6921 	struct got_reflist_entry *re, *se, *new;
6922 	struct got_object_id *re_id, *se_id;
6923 	struct got_tag_object *re_tag, *se_tag;
6924 	time_t re_time, se_time;
6925 
6926 	STAILQ_FOREACH(re, tags, entry) {
6927 		se = STAILQ_FIRST(sorted);
6928 		if (se == NULL) {
6929 			err = got_reflist_entry_dup(&new, re);
6930 			if (err)
6931 				return err;
6932 			STAILQ_INSERT_HEAD(sorted, new, entry);
6933 			continue;
6934 		} else {
6935 			err = got_ref_resolve(&re_id, repo, re->ref);
6936 			if (err)
6937 				break;
6938 			err = got_object_open_as_tag(&re_tag, repo, re_id);
6939 			free(re_id);
6940 			if (err)
6941 				break;
6942 			re_time = got_object_tag_get_tagger_time(re_tag);
6943 			got_object_tag_close(re_tag);
6944 		}
6945 
6946 		while (se) {
6947 			err = got_ref_resolve(&se_id, repo, re->ref);
6948 			if (err)
6949 				break;
6950 			err = got_object_open_as_tag(&se_tag, repo, se_id);
6951 			free(se_id);
6952 			if (err)
6953 				break;
6954 			se_time = got_object_tag_get_tagger_time(se_tag);
6955 			got_object_tag_close(se_tag);
6956 
6957 			if (se_time > re_time) {
6958 				err = got_reflist_entry_dup(&new, re);
6959 				if (err)
6960 					return err;
6961 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
6962 				break;
6963 			}
6964 			se = STAILQ_NEXT(se, entry);
6965 			continue;
6966 		}
6967 	}
6968 done:
6969 	return err;
6970 }
6971 #endif
6972 
6973 static const struct got_error *
6974 get_tag_refname(char **refname, const char *tag_name)
6975 {
6976 	const struct got_error *err;
6977 
6978 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
6979 		*refname = strdup(tag_name);
6980 		if (*refname == NULL)
6981 			return got_error_from_errno("strdup");
6982 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
6983 		err = got_error_from_errno("asprintf");
6984 		*refname = NULL;
6985 		return err;
6986 	}
6987 
6988 	return NULL;
6989 }
6990 
6991 static const struct got_error *
6992 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
6993     const char *allowed_signers, const char *revoked_signers, int verbosity)
6994 {
6995 	static const struct got_error *err = NULL;
6996 	struct got_reflist_head refs;
6997 	struct got_reflist_entry *re;
6998 	char *wanted_refname = NULL;
6999 	int bad_sigs = 0;
7000 
7001 	TAILQ_INIT(&refs);
7002 
7003 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
7004 	if (err)
7005 		return err;
7006 
7007 	if (tag_name) {
7008 		struct got_reference *ref;
7009 		err = get_tag_refname(&wanted_refname, tag_name);
7010 		if (err)
7011 			goto done;
7012 		/* Wanted tag reference should exist. */
7013 		err = got_ref_open(&ref, repo, wanted_refname, 0);
7014 		if (err)
7015 			goto done;
7016 		got_ref_close(ref);
7017 	}
7018 
7019 	TAILQ_FOREACH(re, &refs, entry) {
7020 		const char *refname;
7021 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
7022 		char datebuf[26];
7023 		const char *tagger, *ssh_sig = NULL;
7024 		char *sig_msg = NULL;
7025 		time_t tagger_time;
7026 		struct got_object_id *id;
7027 		struct got_tag_object *tag;
7028 		struct got_commit_object *commit = NULL;
7029 
7030 		refname = got_ref_get_name(re->ref);
7031 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
7032 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
7033 			continue;
7034 		refname += 10;
7035 		refstr = got_ref_to_str(re->ref);
7036 		if (refstr == NULL) {
7037 			err = got_error_from_errno("got_ref_to_str");
7038 			break;
7039 		}
7040 
7041 		err = got_ref_resolve(&id, repo, re->ref);
7042 		if (err)
7043 			break;
7044 		err = got_object_open_as_tag(&tag, repo, id);
7045 		if (err) {
7046 			if (err->code != GOT_ERR_OBJ_TYPE) {
7047 				free(id);
7048 				break;
7049 			}
7050 			/* "lightweight" tag */
7051 			err = got_object_open_as_commit(&commit, repo, id);
7052 			if (err) {
7053 				free(id);
7054 				break;
7055 			}
7056 			tagger = got_object_commit_get_committer(commit);
7057 			tagger_time =
7058 			    got_object_commit_get_committer_time(commit);
7059 			err = got_object_id_str(&id_str, id);
7060 			free(id);
7061 			if (err)
7062 				break;
7063 		} else {
7064 			free(id);
7065 			tagger = got_object_tag_get_tagger(tag);
7066 			tagger_time = got_object_tag_get_tagger_time(tag);
7067 			err = got_object_id_str(&id_str,
7068 			    got_object_tag_get_object_id(tag));
7069 			if (err)
7070 				break;
7071 		}
7072 
7073 		if (verify_tags) {
7074 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
7075 			    got_object_tag_get_message(tag));
7076 			if (ssh_sig && allowed_signers == NULL) {
7077 				err = got_error_msg(
7078 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
7079 				    "SSH signature verification requires "
7080 				        "setting allowed_signers in "
7081 				        "got.conf(5)");
7082 				break;
7083 			}
7084 		}
7085 
7086 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
7087 		free(refstr);
7088 		printf("from: %s\n", tagger);
7089 		datestr = get_datestr(&tagger_time, datebuf);
7090 		if (datestr)
7091 			printf("date: %s UTC\n", datestr);
7092 		if (commit)
7093 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
7094 		else {
7095 			switch (got_object_tag_get_object_type(tag)) {
7096 			case GOT_OBJ_TYPE_BLOB:
7097 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
7098 				    id_str);
7099 				break;
7100 			case GOT_OBJ_TYPE_TREE:
7101 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
7102 				    id_str);
7103 				break;
7104 			case GOT_OBJ_TYPE_COMMIT:
7105 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
7106 				    id_str);
7107 				break;
7108 			case GOT_OBJ_TYPE_TAG:
7109 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
7110 				    id_str);
7111 				break;
7112 			default:
7113 				break;
7114 			}
7115 		}
7116 		free(id_str);
7117 
7118 		if (ssh_sig) {
7119 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
7120 				allowed_signers, revoked_signers, verbosity);
7121 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
7122 				bad_sigs = 1;
7123 			else if (err)
7124 				break;
7125 			printf("signature: %s", sig_msg);
7126 			free(sig_msg);
7127 			sig_msg = NULL;
7128 		}
7129 
7130 		if (commit) {
7131 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
7132 			if (err)
7133 				break;
7134 			got_object_commit_close(commit);
7135 		} else {
7136 			tagmsg0 = strdup(got_object_tag_get_message(tag));
7137 			got_object_tag_close(tag);
7138 			if (tagmsg0 == NULL) {
7139 				err = got_error_from_errno("strdup");
7140 				break;
7141 			}
7142 		}
7143 
7144 		tagmsg = tagmsg0;
7145 		do {
7146 			line = strsep(&tagmsg, "\n");
7147 			if (line)
7148 				printf(" %s\n", line);
7149 		} while (line);
7150 		free(tagmsg0);
7151 	}
7152 done:
7153 	got_ref_list_free(&refs);
7154 	free(wanted_refname);
7155 
7156 	if (err == NULL && bad_sigs)
7157 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
7158 	return err;
7159 }
7160 
7161 static const struct got_error *
7162 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
7163     const char *tag_name, const char *repo_path)
7164 {
7165 	const struct got_error *err = NULL;
7166 	char *template = NULL, *initial_content = NULL;
7167 	char *editor = NULL;
7168 	int initial_content_len;
7169 	int fd = -1;
7170 
7171 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
7172 		err = got_error_from_errno("asprintf");
7173 		goto done;
7174 	}
7175 
7176 	initial_content_len = asprintf(&initial_content,
7177 	    "\n# tagging commit %s as %s\n",
7178 	    commit_id_str, tag_name);
7179 	if (initial_content_len == -1) {
7180 		err = got_error_from_errno("asprintf");
7181 		goto done;
7182 	}
7183 
7184 	err = got_opentemp_named_fd(tagmsg_path, &fd, template);
7185 	if (err)
7186 		goto done;
7187 
7188 	if (write(fd, initial_content, initial_content_len) == -1) {
7189 		err = got_error_from_errno2("write", *tagmsg_path);
7190 		goto done;
7191 	}
7192 
7193 	err = get_editor(&editor);
7194 	if (err)
7195 		goto done;
7196 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
7197 	    initial_content_len, 1);
7198 done:
7199 	free(initial_content);
7200 	free(template);
7201 	free(editor);
7202 
7203 	if (fd != -1 && close(fd) == -1 && err == NULL)
7204 		err = got_error_from_errno2("close", *tagmsg_path);
7205 
7206 	if (err) {
7207 		free(*tagmsg);
7208 		*tagmsg = NULL;
7209 	}
7210 	return err;
7211 }
7212 
7213 static const struct got_error *
7214 add_tag(struct got_repository *repo, const char *tagger,
7215     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
7216     const char *signer_id, int verbosity)
7217 {
7218 	const struct got_error *err = NULL;
7219 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
7220 	char *label = NULL, *commit_id_str = NULL;
7221 	struct got_reference *ref = NULL;
7222 	char *refname = NULL, *tagmsg = NULL;
7223 	char *tagmsg_path = NULL, *tag_id_str = NULL;
7224 	int preserve_tagmsg = 0;
7225 	struct got_reflist_head refs;
7226 
7227 	TAILQ_INIT(&refs);
7228 
7229 	/*
7230 	 * Don't let the user create a tag name with a leading '-'.
7231 	 * While technically a valid reference name, this case is usually
7232 	 * an unintended typo.
7233 	 */
7234 	if (tag_name[0] == '-')
7235 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
7236 
7237 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
7238 	if (err)
7239 		goto done;
7240 
7241 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
7242 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
7243 	if (err)
7244 		goto done;
7245 
7246 	err = got_object_id_str(&commit_id_str, commit_id);
7247 	if (err)
7248 		goto done;
7249 
7250 	err = get_tag_refname(&refname, tag_name);
7251 	if (err)
7252 		goto done;
7253 	if (strncmp("refs/tags/", tag_name, 10) == 0)
7254 		tag_name += 10;
7255 
7256 	err = got_ref_open(&ref, repo, refname, 0);
7257 	if (err == NULL) {
7258 		err = got_error(GOT_ERR_TAG_EXISTS);
7259 		goto done;
7260 	} else if (err->code != GOT_ERR_NOT_REF)
7261 		goto done;
7262 
7263 	if (tagmsg_arg == NULL) {
7264 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
7265 		    tag_name, got_repo_get_path(repo));
7266 		if (err) {
7267 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7268 			    tagmsg_path != NULL)
7269 				preserve_tagmsg = 1;
7270 			goto done;
7271 		}
7272 		/* Editor is done; we can now apply unveil(2) */
7273 		err = got_sigs_apply_unveil();
7274 		if (err)
7275 			goto done;
7276 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
7277 		if (err)
7278 			goto done;
7279 	}
7280 
7281 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
7282 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
7283 	    verbosity);
7284 	if (err) {
7285 		if (tagmsg_path)
7286 			preserve_tagmsg = 1;
7287 		goto done;
7288 	}
7289 
7290 	err = got_ref_alloc(&ref, refname, tag_id);
7291 	if (err) {
7292 		if (tagmsg_path)
7293 			preserve_tagmsg = 1;
7294 		goto done;
7295 	}
7296 
7297 	err = got_ref_write(ref, repo);
7298 	if (err) {
7299 		if (tagmsg_path)
7300 			preserve_tagmsg = 1;
7301 		goto done;
7302 	}
7303 
7304 	err = got_object_id_str(&tag_id_str, tag_id);
7305 	if (err) {
7306 		if (tagmsg_path)
7307 			preserve_tagmsg = 1;
7308 		goto done;
7309 	}
7310 	printf("Created tag %s\n", tag_id_str);
7311 done:
7312 	if (preserve_tagmsg) {
7313 		fprintf(stderr, "%s: tag message preserved in %s\n",
7314 		    getprogname(), tagmsg_path);
7315 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
7316 		err = got_error_from_errno2("unlink", tagmsg_path);
7317 	free(tag_id_str);
7318 	if (ref)
7319 		got_ref_close(ref);
7320 	free(commit_id);
7321 	free(commit_id_str);
7322 	free(refname);
7323 	free(tagmsg);
7324 	free(tagmsg_path);
7325 	got_ref_list_free(&refs);
7326 	return err;
7327 }
7328 
7329 static const struct got_error *
7330 cmd_tag(int argc, char *argv[])
7331 {
7332 	const struct got_error *error = NULL;
7333 	struct got_repository *repo = NULL;
7334 	struct got_worktree *worktree = NULL;
7335 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
7336 	char *gitconfig_path = NULL, *tagger = NULL;
7337 	char *allowed_signers = NULL, *revoked_signers = NULL;
7338 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
7339 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
7340 	const char *signer_id = NULL;
7341 	int *pack_fds = NULL;
7342 
7343 	while ((ch = getopt(argc, argv, "c:m:r:ls:Vv")) != -1) {
7344 		switch (ch) {
7345 		case 'c':
7346 			commit_id_arg = optarg;
7347 			break;
7348 		case 'm':
7349 			tagmsg = optarg;
7350 			break;
7351 		case 'r':
7352 			repo_path = realpath(optarg, NULL);
7353 			if (repo_path == NULL)
7354 				return got_error_from_errno2("realpath",
7355 				    optarg);
7356 			got_path_strip_trailing_slashes(repo_path);
7357 			break;
7358 		case 'l':
7359 			do_list = 1;
7360 			break;
7361 		case 's':
7362 			signer_id = optarg;
7363 			break;
7364 		case 'V':
7365 			verify_tags = 1;
7366 			break;
7367 		case 'v':
7368 			if (verbosity < 0)
7369 				verbosity = 0;
7370 			else if (verbosity < 3)
7371 				verbosity++;
7372 			break;
7373 		default:
7374 			usage_tag();
7375 			/* NOTREACHED */
7376 		}
7377 	}
7378 
7379 	argc -= optind;
7380 	argv += optind;
7381 
7382 	if (do_list || verify_tags) {
7383 		if (commit_id_arg != NULL)
7384 			errx(1,
7385 			    "-c option can only be used when creating a tag");
7386 		if (tagmsg) {
7387 			if (do_list)
7388 				option_conflict('l', 'm');
7389 			else
7390 				option_conflict('V', 'm');
7391 		}
7392 		if (signer_id) {
7393 			if (do_list)
7394 				option_conflict('l', 's');
7395 			else
7396 				option_conflict('V', 's');
7397 		}
7398 		if (argc > 1)
7399 			usage_tag();
7400 	} else if (argc != 1)
7401 		usage_tag();
7402 
7403 	if (argc == 1)
7404 		tag_name = argv[0];
7405 
7406 #ifndef PROFILE
7407 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7408 	    "sendfd unveil", NULL) == -1)
7409 		err(1, "pledge");
7410 #endif
7411 	cwd = getcwd(NULL, 0);
7412 	if (cwd == NULL) {
7413 		error = got_error_from_errno("getcwd");
7414 		goto done;
7415 	}
7416 
7417 	error = got_repo_pack_fds_open(&pack_fds);
7418 	if (error != NULL)
7419 		goto done;
7420 
7421 	if (repo_path == NULL) {
7422 		error = got_worktree_open(&worktree, cwd);
7423 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7424 			goto done;
7425 		else
7426 			error = NULL;
7427 		if (worktree) {
7428 			repo_path =
7429 			    strdup(got_worktree_get_repo_path(worktree));
7430 			if (repo_path == NULL)
7431 				error = got_error_from_errno("strdup");
7432 			if (error)
7433 				goto done;
7434 		} else {
7435 			repo_path = strdup(cwd);
7436 			if (repo_path == NULL) {
7437 				error = got_error_from_errno("strdup");
7438 				goto done;
7439 			}
7440 		}
7441 	}
7442 
7443 	if (do_list || verify_tags) {
7444 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7445 		if (error != NULL)
7446 			goto done;
7447 		error = get_allowed_signers(&allowed_signers, repo, worktree);
7448 		if (error)
7449 			goto done;
7450 		error = get_revoked_signers(&revoked_signers, repo, worktree);
7451 		if (error)
7452 			goto done;
7453 		if (worktree) {
7454 			/* Release work tree lock. */
7455 			got_worktree_close(worktree);
7456 			worktree = NULL;
7457 		}
7458 
7459 		/*
7460 		 * Remove "cpath" promise unless needed for signature tmpfile
7461 		 * creation.
7462 		 */
7463 		if (verify_tags)
7464 		 	got_sigs_apply_unveil();
7465 		else {
7466 #ifndef PROFILE
7467 			if (pledge("stdio rpath wpath flock proc exec sendfd "
7468 			    "unveil", NULL) == -1)
7469 				err(1, "pledge");
7470 #endif
7471 		}
7472 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
7473 		if (error)
7474 			goto done;
7475 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
7476 		    revoked_signers, verbosity);
7477 	} else {
7478 		error = get_gitconfig_path(&gitconfig_path);
7479 		if (error)
7480 			goto done;
7481 		error = got_repo_open(&repo, repo_path, gitconfig_path,
7482 		    pack_fds);
7483 		if (error != NULL)
7484 			goto done;
7485 
7486 		error = get_author(&tagger, repo, worktree);
7487 		if (error)
7488 			goto done;
7489 		if (worktree) {
7490 			/* Release work tree lock. */
7491 			got_worktree_close(worktree);
7492 			worktree = NULL;
7493 		}
7494 
7495 		if (tagmsg) {
7496 			if (signer_id) {
7497 				error = got_sigs_apply_unveil();
7498 				if (error)
7499 					goto done;
7500 			}
7501 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7502 			if (error)
7503 				goto done;
7504 		}
7505 
7506 		if (commit_id_arg == NULL) {
7507 			struct got_reference *head_ref;
7508 			struct got_object_id *commit_id;
7509 			error = got_ref_open(&head_ref, repo,
7510 			    worktree ? got_worktree_get_head_ref_name(worktree)
7511 			    : GOT_REF_HEAD, 0);
7512 			if (error)
7513 				goto done;
7514 			error = got_ref_resolve(&commit_id, repo, head_ref);
7515 			got_ref_close(head_ref);
7516 			if (error)
7517 				goto done;
7518 			error = got_object_id_str(&commit_id_str, commit_id);
7519 			free(commit_id);
7520 			if (error)
7521 				goto done;
7522 		}
7523 
7524 		error = add_tag(repo, tagger, tag_name,
7525 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
7526 		    signer_id, verbosity);
7527 	}
7528 done:
7529 	if (repo) {
7530 		const struct got_error *close_err = got_repo_close(repo);
7531 		if (error == NULL)
7532 			error = close_err;
7533 	}
7534 	if (worktree)
7535 		got_worktree_close(worktree);
7536 	if (pack_fds) {
7537 		const struct got_error *pack_err =
7538 		    got_repo_pack_fds_close(pack_fds);
7539 		if (error == NULL)
7540 			error = pack_err;
7541 	}
7542 	free(cwd);
7543 	free(repo_path);
7544 	free(gitconfig_path);
7545 	free(commit_id_str);
7546 	free(tagger);
7547 	free(allowed_signers);
7548 	free(revoked_signers);
7549 	return error;
7550 }
7551 
7552 __dead static void
7553 usage_add(void)
7554 {
7555 	fprintf(stderr, "usage: %s add [-R] [-I] path ...\n",
7556 	    getprogname());
7557 	exit(1);
7558 }
7559 
7560 static const struct got_error *
7561 add_progress(void *arg, unsigned char status, const char *path)
7562 {
7563 	while (path[0] == '/')
7564 		path++;
7565 	printf("%c  %s\n", status, path);
7566 	return NULL;
7567 }
7568 
7569 static const struct got_error *
7570 cmd_add(int argc, char *argv[])
7571 {
7572 	const struct got_error *error = NULL;
7573 	struct got_repository *repo = NULL;
7574 	struct got_worktree *worktree = NULL;
7575 	char *cwd = NULL;
7576 	struct got_pathlist_head paths;
7577 	struct got_pathlist_entry *pe;
7578 	int ch, can_recurse = 0, no_ignores = 0;
7579 	int *pack_fds = NULL;
7580 
7581 	TAILQ_INIT(&paths);
7582 
7583 	while ((ch = getopt(argc, argv, "IR")) != -1) {
7584 		switch (ch) {
7585 		case 'I':
7586 			no_ignores = 1;
7587 			break;
7588 		case 'R':
7589 			can_recurse = 1;
7590 			break;
7591 		default:
7592 			usage_add();
7593 			/* NOTREACHED */
7594 		}
7595 	}
7596 
7597 	argc -= optind;
7598 	argv += optind;
7599 
7600 #ifndef PROFILE
7601 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7602 	    NULL) == -1)
7603 		err(1, "pledge");
7604 #endif
7605 	if (argc < 1)
7606 		usage_add();
7607 
7608 	cwd = getcwd(NULL, 0);
7609 	if (cwd == NULL) {
7610 		error = got_error_from_errno("getcwd");
7611 		goto done;
7612 	}
7613 
7614 	error = got_repo_pack_fds_open(&pack_fds);
7615 	if (error != NULL)
7616 		goto done;
7617 
7618 	error = got_worktree_open(&worktree, cwd);
7619 	if (error) {
7620 		if (error->code == GOT_ERR_NOT_WORKTREE)
7621 			error = wrap_not_worktree_error(error, "add", cwd);
7622 		goto done;
7623 	}
7624 
7625 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7626 	    NULL, pack_fds);
7627 	if (error != NULL)
7628 		goto done;
7629 
7630 	error = apply_unveil(got_repo_get_path(repo), 1,
7631 	    got_worktree_get_root_path(worktree));
7632 	if (error)
7633 		goto done;
7634 
7635 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7636 	if (error)
7637 		goto done;
7638 
7639 	if (!can_recurse) {
7640 		char *ondisk_path;
7641 		struct stat sb;
7642 		TAILQ_FOREACH(pe, &paths, entry) {
7643 			if (asprintf(&ondisk_path, "%s/%s",
7644 			    got_worktree_get_root_path(worktree),
7645 			    pe->path) == -1) {
7646 				error = got_error_from_errno("asprintf");
7647 				goto done;
7648 			}
7649 			if (lstat(ondisk_path, &sb) == -1) {
7650 				if (errno == ENOENT) {
7651 					free(ondisk_path);
7652 					continue;
7653 				}
7654 				error = got_error_from_errno2("lstat",
7655 				    ondisk_path);
7656 				free(ondisk_path);
7657 				goto done;
7658 			}
7659 			free(ondisk_path);
7660 			if (S_ISDIR(sb.st_mode)) {
7661 				error = got_error_msg(GOT_ERR_BAD_PATH,
7662 				    "adding directories requires -R option");
7663 				goto done;
7664 			}
7665 		}
7666 	}
7667 
7668 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
7669 	    NULL, repo, no_ignores);
7670 done:
7671 	if (repo) {
7672 		const struct got_error *close_err = got_repo_close(repo);
7673 		if (error == NULL)
7674 			error = close_err;
7675 	}
7676 	if (worktree)
7677 		got_worktree_close(worktree);
7678 	if (pack_fds) {
7679 		const struct got_error *pack_err =
7680 		    got_repo_pack_fds_close(pack_fds);
7681 		if (error == NULL)
7682 			error = pack_err;
7683 	}
7684 	TAILQ_FOREACH(pe, &paths, entry)
7685 		free((char *)pe->path);
7686 	got_pathlist_free(&paths);
7687 	free(cwd);
7688 	return error;
7689 }
7690 
7691 __dead static void
7692 usage_remove(void)
7693 {
7694 	fprintf(stderr, "usage: %s remove [-f] [-k] [-R] [-s status-codes] "
7695 	    "path ...\n", getprogname());
7696 	exit(1);
7697 }
7698 
7699 static const struct got_error *
7700 print_remove_status(void *arg, unsigned char status,
7701     unsigned char staged_status, const char *path)
7702 {
7703 	while (path[0] == '/')
7704 		path++;
7705 	if (status == GOT_STATUS_NONEXISTENT)
7706 		return NULL;
7707 	if (status == staged_status && (status == GOT_STATUS_DELETE))
7708 		status = GOT_STATUS_NO_CHANGE;
7709 	printf("%c%c %s\n", status, staged_status, path);
7710 	return NULL;
7711 }
7712 
7713 static const struct got_error *
7714 cmd_remove(int argc, char *argv[])
7715 {
7716 	const struct got_error *error = NULL;
7717 	struct got_worktree *worktree = NULL;
7718 	struct got_repository *repo = NULL;
7719 	const char *status_codes = NULL;
7720 	char *cwd = NULL;
7721 	struct got_pathlist_head paths;
7722 	struct got_pathlist_entry *pe;
7723 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
7724 	int ignore_missing_paths = 0;
7725 	int *pack_fds = NULL;
7726 
7727 	TAILQ_INIT(&paths);
7728 
7729 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
7730 		switch (ch) {
7731 		case 'f':
7732 			delete_local_mods = 1;
7733 			ignore_missing_paths = 1;
7734 			break;
7735 		case 'k':
7736 			keep_on_disk = 1;
7737 			break;
7738 		case 'R':
7739 			can_recurse = 1;
7740 			break;
7741 		case 's':
7742 			for (i = 0; i < strlen(optarg); i++) {
7743 				switch (optarg[i]) {
7744 				case GOT_STATUS_MODIFY:
7745 					delete_local_mods = 1;
7746 					break;
7747 				case GOT_STATUS_MISSING:
7748 					ignore_missing_paths = 1;
7749 					break;
7750 				default:
7751 					errx(1, "invalid status code '%c'",
7752 					    optarg[i]);
7753 				}
7754 			}
7755 			status_codes = optarg;
7756 			break;
7757 		default:
7758 			usage_remove();
7759 			/* NOTREACHED */
7760 		}
7761 	}
7762 
7763 	argc -= optind;
7764 	argv += optind;
7765 
7766 #ifndef PROFILE
7767 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7768 	    NULL) == -1)
7769 		err(1, "pledge");
7770 #endif
7771 	if (argc < 1)
7772 		usage_remove();
7773 
7774 	cwd = getcwd(NULL, 0);
7775 	if (cwd == NULL) {
7776 		error = got_error_from_errno("getcwd");
7777 		goto done;
7778 	}
7779 
7780 	error = got_repo_pack_fds_open(&pack_fds);
7781 	if (error != NULL)
7782 		goto done;
7783 
7784 	error = got_worktree_open(&worktree, cwd);
7785 	if (error) {
7786 		if (error->code == GOT_ERR_NOT_WORKTREE)
7787 			error = wrap_not_worktree_error(error, "remove", cwd);
7788 		goto done;
7789 	}
7790 
7791 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7792 	    NULL, pack_fds);
7793 	if (error)
7794 		goto done;
7795 
7796 	error = apply_unveil(got_repo_get_path(repo), 1,
7797 	    got_worktree_get_root_path(worktree));
7798 	if (error)
7799 		goto done;
7800 
7801 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7802 	if (error)
7803 		goto done;
7804 
7805 	if (!can_recurse) {
7806 		char *ondisk_path;
7807 		struct stat sb;
7808 		TAILQ_FOREACH(pe, &paths, entry) {
7809 			if (asprintf(&ondisk_path, "%s/%s",
7810 			    got_worktree_get_root_path(worktree),
7811 			    pe->path) == -1) {
7812 				error = got_error_from_errno("asprintf");
7813 				goto done;
7814 			}
7815 			if (lstat(ondisk_path, &sb) == -1) {
7816 				if (errno == ENOENT) {
7817 					free(ondisk_path);
7818 					continue;
7819 				}
7820 				error = got_error_from_errno2("lstat",
7821 				    ondisk_path);
7822 				free(ondisk_path);
7823 				goto done;
7824 			}
7825 			free(ondisk_path);
7826 			if (S_ISDIR(sb.st_mode)) {
7827 				error = got_error_msg(GOT_ERR_BAD_PATH,
7828 				    "removing directories requires -R option");
7829 				goto done;
7830 			}
7831 		}
7832 	}
7833 
7834 	error = got_worktree_schedule_delete(worktree, &paths,
7835 	    delete_local_mods, status_codes, print_remove_status, NULL,
7836 	    repo, keep_on_disk, ignore_missing_paths);
7837 done:
7838 	if (repo) {
7839 		const struct got_error *close_err = got_repo_close(repo);
7840 		if (error == NULL)
7841 			error = close_err;
7842 	}
7843 	if (worktree)
7844 		got_worktree_close(worktree);
7845 	if (pack_fds) {
7846 		const struct got_error *pack_err =
7847 		    got_repo_pack_fds_close(pack_fds);
7848 		if (error == NULL)
7849 			error = pack_err;
7850 	}
7851 	TAILQ_FOREACH(pe, &paths, entry)
7852 		free((char *)pe->path);
7853 	got_pathlist_free(&paths);
7854 	free(cwd);
7855 	return error;
7856 }
7857 
7858 __dead static void
7859 usage_patch(void)
7860 {
7861 	fprintf(stderr, "usage: %s patch [-n] [-p strip-count] "
7862 	    "[-R] [patchfile]\n", getprogname());
7863 	exit(1);
7864 }
7865 
7866 static const struct got_error *
7867 patch_from_stdin(int *patchfd)
7868 {
7869 	const struct got_error *err = NULL;
7870 	ssize_t r;
7871 	char *path, buf[BUFSIZ];
7872 	sig_t sighup, sigint, sigquit;
7873 
7874 	err = got_opentemp_named_fd(&path, patchfd,
7875 	    GOT_TMPDIR_STR "/got-patch");
7876 	if (err)
7877 		return err;
7878 	unlink(path);
7879 	free(path);
7880 
7881 	sighup = signal(SIGHUP, SIG_DFL);
7882 	sigint = signal(SIGINT, SIG_DFL);
7883 	sigquit = signal(SIGQUIT, SIG_DFL);
7884 
7885 	for (;;) {
7886 		r = read(0, buf, sizeof(buf));
7887 		if (r == -1) {
7888 			err = got_error_from_errno("read");
7889 			break;
7890 		}
7891 		if (r == 0)
7892 			break;
7893 		if (write(*patchfd, buf, r) == -1) {
7894 			err = got_error_from_errno("write");
7895 			break;
7896 		}
7897 	}
7898 
7899 	signal(SIGHUP, sighup);
7900 	signal(SIGINT, sigint);
7901 	signal(SIGQUIT, sigquit);
7902 
7903 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
7904 		err = got_error_from_errno("lseek");
7905 
7906 	if (err != NULL) {
7907 		close(*patchfd);
7908 		*patchfd = -1;
7909 	}
7910 
7911 	return err;
7912 }
7913 
7914 static const struct got_error *
7915 patch_progress(void *arg, const char *old, const char *new,
7916     unsigned char status, const struct got_error *error, int old_from,
7917     int old_lines, int new_from, int new_lines, int offset,
7918     int ws_mangled, const struct got_error *hunk_err)
7919 {
7920 	const char *path = new == NULL ? old : new;
7921 
7922 	while (*path == '/')
7923 		path++;
7924 
7925 	if (status != 0)
7926 		printf("%c  %s\n", status, path);
7927 
7928 	if (error != NULL)
7929 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
7930 
7931 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
7932 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
7933 		    old_lines, new_from, new_lines);
7934 		if (hunk_err != NULL)
7935 			printf("%s\n", hunk_err->msg);
7936 		else if (offset != 0)
7937 			printf("applied with offset %d\n", offset);
7938 		else
7939 			printf("hunk contains mangled whitespace\n");
7940 	}
7941 
7942 	return NULL;
7943 }
7944 
7945 static const struct got_error *
7946 cmd_patch(int argc, char *argv[])
7947 {
7948 	const struct got_error *error = NULL, *close_error = NULL;
7949 	struct got_worktree *worktree = NULL;
7950 	struct got_repository *repo = NULL;
7951 	const char *errstr;
7952 	char *cwd = NULL;
7953 	int ch, nop = 0, strip = -1, reverse = 0;
7954 	int patchfd;
7955 	int *pack_fds = NULL;
7956 
7957 	while ((ch = getopt(argc, argv, "np:R")) != -1) {
7958 		switch (ch) {
7959 		case 'n':
7960 			nop = 1;
7961 			break;
7962 		case 'p':
7963 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
7964 			if (errstr != NULL)
7965 				errx(1, "pathname strip count is %s: %s",
7966 				     errstr, optarg);
7967 			break;
7968 		case 'R':
7969 			reverse = 1;
7970 			break;
7971 		default:
7972 			usage_patch();
7973 			/* NOTREACHED */
7974 		}
7975 	}
7976 
7977 	argc -= optind;
7978 	argv += optind;
7979 
7980 	if (argc == 0) {
7981 		error = patch_from_stdin(&patchfd);
7982 		if (error)
7983 			return error;
7984 	} else if (argc == 1) {
7985 		patchfd = open(argv[0], O_RDONLY);
7986 		if (patchfd == -1) {
7987 			error = got_error_from_errno2("open", argv[0]);
7988 			return error;
7989 		}
7990 	} else
7991 		usage_patch();
7992 
7993 	if ((cwd = getcwd(NULL, 0)) == NULL) {
7994 		error = got_error_from_errno("getcwd");
7995 		goto done;
7996 	}
7997 
7998 	error = got_repo_pack_fds_open(&pack_fds);
7999 	if (error != NULL)
8000 		goto done;
8001 
8002 	error = got_worktree_open(&worktree, cwd);
8003 	if (error != NULL)
8004 		goto done;
8005 
8006 	const char *repo_path = got_worktree_get_repo_path(worktree);
8007 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8008 	if (error != NULL)
8009 		goto done;
8010 
8011 	error = apply_unveil(got_repo_get_path(repo), 0,
8012 	    got_worktree_get_root_path(worktree));
8013 	if (error != NULL)
8014 		goto done;
8015 
8016 #ifndef PROFILE
8017 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock",
8018 	    NULL) == -1)
8019 		err(1, "pledge");
8020 #endif
8021 
8022 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
8023 	    &patch_progress, NULL, check_cancelled, NULL);
8024 
8025 done:
8026 	if (repo) {
8027 		close_error = got_repo_close(repo);
8028 		if (error == NULL)
8029 			error = close_error;
8030 	}
8031 	if (worktree != NULL) {
8032 		close_error = got_worktree_close(worktree);
8033 		if (error == NULL)
8034 			error = close_error;
8035 	}
8036 	if (pack_fds) {
8037 		const struct got_error *pack_err =
8038 		    got_repo_pack_fds_close(pack_fds);
8039 		if (error == NULL)
8040 			error = pack_err;
8041 	}
8042 	free(cwd);
8043 	return error;
8044 }
8045 
8046 __dead static void
8047 usage_revert(void)
8048 {
8049 	fprintf(stderr, "usage: %s revert [-p] [-F response-script] [-R] "
8050 	    "path ...\n", getprogname());
8051 	exit(1);
8052 }
8053 
8054 static const struct got_error *
8055 revert_progress(void *arg, unsigned char status, const char *path)
8056 {
8057 	if (status == GOT_STATUS_UNVERSIONED)
8058 		return NULL;
8059 
8060 	while (path[0] == '/')
8061 		path++;
8062 	printf("%c  %s\n", status, path);
8063 	return NULL;
8064 }
8065 
8066 struct choose_patch_arg {
8067 	FILE *patch_script_file;
8068 	const char *action;
8069 };
8070 
8071 static const struct got_error *
8072 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
8073     int nchanges, const char *action)
8074 {
8075 	const struct got_error *err;
8076 	char *line = NULL;
8077 	size_t linesize = 0;
8078 	ssize_t linelen;
8079 
8080 	switch (status) {
8081 	case GOT_STATUS_ADD:
8082 		printf("A  %s\n%s this addition? [y/n] ", path, action);
8083 		break;
8084 	case GOT_STATUS_DELETE:
8085 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
8086 		break;
8087 	case GOT_STATUS_MODIFY:
8088 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
8089 			return got_error_from_errno("fseek");
8090 		printf(GOT_COMMIT_SEP_STR);
8091 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
8092 			printf("%s", line);
8093 		if (linelen == -1 && ferror(patch_file)) {
8094 			err = got_error_from_errno("getline");
8095 			free(line);
8096 			return err;
8097 		}
8098 		free(line);
8099 		printf(GOT_COMMIT_SEP_STR);
8100 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
8101 		    path, n, nchanges, action);
8102 		break;
8103 	default:
8104 		return got_error_path(path, GOT_ERR_FILE_STATUS);
8105 	}
8106 
8107 	return NULL;
8108 }
8109 
8110 static const struct got_error *
8111 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
8112     FILE *patch_file, int n, int nchanges)
8113 {
8114 	const struct got_error *err = NULL;
8115 	char *line = NULL;
8116 	size_t linesize = 0;
8117 	ssize_t linelen;
8118 	int resp = ' ';
8119 	struct choose_patch_arg *a = arg;
8120 
8121 	*choice = GOT_PATCH_CHOICE_NONE;
8122 
8123 	if (a->patch_script_file) {
8124 		char *nl;
8125 		err = show_change(status, path, patch_file, n, nchanges,
8126 		    a->action);
8127 		if (err)
8128 			return err;
8129 		linelen = getline(&line, &linesize, a->patch_script_file);
8130 		if (linelen == -1) {
8131 			if (ferror(a->patch_script_file))
8132 				return got_error_from_errno("getline");
8133 			return NULL;
8134 		}
8135 		nl = strchr(line, '\n');
8136 		if (nl)
8137 			*nl = '\0';
8138 		if (strcmp(line, "y") == 0) {
8139 			*choice = GOT_PATCH_CHOICE_YES;
8140 			printf("y\n");
8141 		} else if (strcmp(line, "n") == 0) {
8142 			*choice = GOT_PATCH_CHOICE_NO;
8143 			printf("n\n");
8144 		} else if (strcmp(line, "q") == 0 &&
8145 		    status == GOT_STATUS_MODIFY) {
8146 			*choice = GOT_PATCH_CHOICE_QUIT;
8147 			printf("q\n");
8148 		} else
8149 			printf("invalid response '%s'\n", line);
8150 		free(line);
8151 		return NULL;
8152 	}
8153 
8154 	while (resp != 'y' && resp != 'n' && resp != 'q') {
8155 		err = show_change(status, path, patch_file, n, nchanges,
8156 		    a->action);
8157 		if (err)
8158 			return err;
8159 		resp = getchar();
8160 		if (resp == '\n')
8161 			resp = getchar();
8162 		if (status == GOT_STATUS_MODIFY) {
8163 			if (resp != 'y' && resp != 'n' && resp != 'q') {
8164 				printf("invalid response '%c'\n", resp);
8165 				resp = ' ';
8166 			}
8167 		} else if (resp != 'y' && resp != 'n') {
8168 				printf("invalid response '%c'\n", resp);
8169 				resp = ' ';
8170 		}
8171 	}
8172 
8173 	if (resp == 'y')
8174 		*choice = GOT_PATCH_CHOICE_YES;
8175 	else if (resp == 'n')
8176 		*choice = GOT_PATCH_CHOICE_NO;
8177 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
8178 		*choice = GOT_PATCH_CHOICE_QUIT;
8179 
8180 	return NULL;
8181 }
8182 
8183 static const struct got_error *
8184 cmd_revert(int argc, char *argv[])
8185 {
8186 	const struct got_error *error = NULL;
8187 	struct got_worktree *worktree = NULL;
8188 	struct got_repository *repo = NULL;
8189 	char *cwd = NULL, *path = NULL;
8190 	struct got_pathlist_head paths;
8191 	struct got_pathlist_entry *pe;
8192 	int ch, can_recurse = 0, pflag = 0;
8193 	FILE *patch_script_file = NULL;
8194 	const char *patch_script_path = NULL;
8195 	struct choose_patch_arg cpa;
8196 	int *pack_fds = NULL;
8197 
8198 	TAILQ_INIT(&paths);
8199 
8200 	while ((ch = getopt(argc, argv, "pF:R")) != -1) {
8201 		switch (ch) {
8202 		case 'p':
8203 			pflag = 1;
8204 			break;
8205 		case 'F':
8206 			patch_script_path = optarg;
8207 			break;
8208 		case 'R':
8209 			can_recurse = 1;
8210 			break;
8211 		default:
8212 			usage_revert();
8213 			/* NOTREACHED */
8214 		}
8215 	}
8216 
8217 	argc -= optind;
8218 	argv += optind;
8219 
8220 #ifndef PROFILE
8221 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8222 	    "unveil", NULL) == -1)
8223 		err(1, "pledge");
8224 #endif
8225 	if (argc < 1)
8226 		usage_revert();
8227 	if (patch_script_path && !pflag)
8228 		errx(1, "-F option can only be used together with -p option");
8229 
8230 	cwd = getcwd(NULL, 0);
8231 	if (cwd == NULL) {
8232 		error = got_error_from_errno("getcwd");
8233 		goto done;
8234 	}
8235 
8236 	error = got_repo_pack_fds_open(&pack_fds);
8237 	if (error != NULL)
8238 		goto done;
8239 
8240 	error = got_worktree_open(&worktree, cwd);
8241 	if (error) {
8242 		if (error->code == GOT_ERR_NOT_WORKTREE)
8243 			error = wrap_not_worktree_error(error, "revert", cwd);
8244 		goto done;
8245 	}
8246 
8247 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8248 	    NULL, pack_fds);
8249 	if (error != NULL)
8250 		goto done;
8251 
8252 	if (patch_script_path) {
8253 		patch_script_file = fopen(patch_script_path, "re");
8254 		if (patch_script_file == NULL) {
8255 			error = got_error_from_errno2("fopen",
8256 			    patch_script_path);
8257 			goto done;
8258 		}
8259 	}
8260 	error = apply_unveil(got_repo_get_path(repo), 1,
8261 	    got_worktree_get_root_path(worktree));
8262 	if (error)
8263 		goto done;
8264 
8265 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8266 	if (error)
8267 		goto done;
8268 
8269 	if (!can_recurse) {
8270 		char *ondisk_path;
8271 		struct stat sb;
8272 		TAILQ_FOREACH(pe, &paths, entry) {
8273 			if (asprintf(&ondisk_path, "%s/%s",
8274 			    got_worktree_get_root_path(worktree),
8275 			    pe->path) == -1) {
8276 				error = got_error_from_errno("asprintf");
8277 				goto done;
8278 			}
8279 			if (lstat(ondisk_path, &sb) == -1) {
8280 				if (errno == ENOENT) {
8281 					free(ondisk_path);
8282 					continue;
8283 				}
8284 				error = got_error_from_errno2("lstat",
8285 				    ondisk_path);
8286 				free(ondisk_path);
8287 				goto done;
8288 			}
8289 			free(ondisk_path);
8290 			if (S_ISDIR(sb.st_mode)) {
8291 				error = got_error_msg(GOT_ERR_BAD_PATH,
8292 				    "reverting directories requires -R option");
8293 				goto done;
8294 			}
8295 		}
8296 	}
8297 
8298 	cpa.patch_script_file = patch_script_file;
8299 	cpa.action = "revert";
8300 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
8301 	    pflag ? choose_patch : NULL, &cpa, repo);
8302 done:
8303 	if (patch_script_file && fclose(patch_script_file) == EOF &&
8304 	    error == NULL)
8305 		error = got_error_from_errno2("fclose", patch_script_path);
8306 	if (repo) {
8307 		const struct got_error *close_err = got_repo_close(repo);
8308 		if (error == NULL)
8309 			error = close_err;
8310 	}
8311 	if (worktree)
8312 		got_worktree_close(worktree);
8313 	if (pack_fds) {
8314 		const struct got_error *pack_err =
8315 		    got_repo_pack_fds_close(pack_fds);
8316 		if (error == NULL)
8317 			error = pack_err;
8318 	}
8319 	free(path);
8320 	free(cwd);
8321 	return error;
8322 }
8323 
8324 __dead static void
8325 usage_commit(void)
8326 {
8327 	fprintf(stderr, "usage: %s commit [-F path] [-m msg] [-N] [-S] "
8328 	    "[path ...]\n", getprogname());
8329 	exit(1);
8330 }
8331 
8332 struct collect_commit_logmsg_arg {
8333 	const char *cmdline_log;
8334 	const char *prepared_log;
8335 	int non_interactive;
8336 	const char *editor;
8337 	const char *worktree_path;
8338 	const char *branch_name;
8339 	const char *repo_path;
8340 	char *logmsg_path;
8341 
8342 };
8343 
8344 static const struct got_error *
8345 read_prepared_logmsg(char **logmsg, const char *path)
8346 {
8347 	const struct got_error *err = NULL;
8348 	FILE *f = NULL;
8349 	struct stat sb;
8350 	size_t r;
8351 
8352 	*logmsg = NULL;
8353 	memset(&sb, 0, sizeof(sb));
8354 
8355 	f = fopen(path, "re");
8356 	if (f == NULL)
8357 		return got_error_from_errno2("fopen", path);
8358 
8359 	if (fstat(fileno(f), &sb) == -1) {
8360 		err = got_error_from_errno2("fstat", path);
8361 		goto done;
8362 	}
8363 	if (sb.st_size == 0) {
8364 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
8365 		goto done;
8366 	}
8367 
8368 	*logmsg = malloc(sb.st_size + 1);
8369 	if (*logmsg == NULL) {
8370 		err = got_error_from_errno("malloc");
8371 		goto done;
8372 	}
8373 
8374 	r = fread(*logmsg, 1, sb.st_size, f);
8375 	if (r != sb.st_size) {
8376 		if (ferror(f))
8377 			err = got_error_from_errno2("fread", path);
8378 		else
8379 			err = got_error(GOT_ERR_IO);
8380 		goto done;
8381 	}
8382 	(*logmsg)[sb.st_size] = '\0';
8383 done:
8384 	if (fclose(f) == EOF && err == NULL)
8385 		err = got_error_from_errno2("fclose", path);
8386 	if (err) {
8387 		free(*logmsg);
8388 		*logmsg = NULL;
8389 	}
8390 	return err;
8391 	
8392 }
8393 
8394 static const struct got_error *
8395 collect_commit_logmsg(struct got_pathlist_head *commitable_paths, char **logmsg,
8396     void *arg)
8397 {
8398 	char *initial_content = NULL;
8399 	struct got_pathlist_entry *pe;
8400 	const struct got_error *err = NULL;
8401 	char *template = NULL;
8402 	struct collect_commit_logmsg_arg *a = arg;
8403 	int initial_content_len;
8404 	int fd = -1;
8405 	size_t len;
8406 
8407 	/* if a message was specified on the command line, just use it */
8408 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
8409 		len = strlen(a->cmdline_log) + 1;
8410 		*logmsg = malloc(len + 1);
8411 		if (*logmsg == NULL)
8412 			return got_error_from_errno("malloc");
8413 		strlcpy(*logmsg, a->cmdline_log, len);
8414 		return NULL;
8415 	} else if (a->prepared_log != NULL && a->non_interactive)
8416 		return read_prepared_logmsg(logmsg, a->prepared_log);
8417 
8418 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
8419 		return got_error_from_errno("asprintf");
8420 
8421 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template);
8422 	if (err)
8423 		goto done;
8424 
8425 	if (a->prepared_log) {
8426 		char *msg;
8427 		err = read_prepared_logmsg(&msg, a->prepared_log);
8428 		if (err)
8429 			goto done;
8430 		if (write(fd, msg, strlen(msg)) == -1) {
8431 			err = got_error_from_errno2("write", a->logmsg_path);
8432 			free(msg);
8433 			goto done;
8434 		}
8435 		free(msg);
8436 	}
8437 
8438 	initial_content_len = asprintf(&initial_content,
8439 	    "\n# changes to be committed on branch %s:\n",
8440 	    a->branch_name);
8441 	if (initial_content_len == -1) {
8442 		err = got_error_from_errno("asprintf");
8443 		goto done;
8444 	}
8445 
8446 	if (write(fd, initial_content, initial_content_len) == -1) {
8447 		err = got_error_from_errno2("write", a->logmsg_path);
8448 		goto done;
8449 	}
8450 
8451 	TAILQ_FOREACH(pe, commitable_paths, entry) {
8452 		struct got_commitable *ct = pe->data;
8453 		dprintf(fd, "#  %c  %s\n",
8454 		    got_commitable_get_status(ct),
8455 		    got_commitable_get_path(ct));
8456 	}
8457 
8458 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
8459 	    initial_content_len, a->prepared_log ? 0 : 1);
8460 done:
8461 	free(initial_content);
8462 	free(template);
8463 
8464 	if (fd != -1 && close(fd) == -1 && err == NULL)
8465 		err = got_error_from_errno2("close", a->logmsg_path);
8466 
8467 	/* Editor is done; we can now apply unveil(2) */
8468 	if (err == NULL)
8469 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
8470 	if (err) {
8471 		free(*logmsg);
8472 		*logmsg = NULL;
8473 	}
8474 	return err;
8475 }
8476 
8477 static const struct got_error *
8478 cmd_commit(int argc, char *argv[])
8479 {
8480 	const struct got_error *error = NULL;
8481 	struct got_worktree *worktree = NULL;
8482 	struct got_repository *repo = NULL;
8483 	char *cwd = NULL, *id_str = NULL;
8484 	struct got_object_id *id = NULL;
8485 	const char *logmsg = NULL;
8486 	char *prepared_logmsg = NULL;
8487 	struct collect_commit_logmsg_arg cl_arg;
8488 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
8489 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
8490 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
8491 	struct got_pathlist_head paths;
8492 	int *pack_fds = NULL;
8493 
8494 	TAILQ_INIT(&paths);
8495 	cl_arg.logmsg_path = NULL;
8496 
8497 	while ((ch = getopt(argc, argv, "F:m:NS")) != -1) {
8498 		switch (ch) {
8499 		case 'F':
8500 			if (logmsg != NULL)
8501 				option_conflict('F', 'm');
8502 			prepared_logmsg = realpath(optarg, NULL);
8503 			if (prepared_logmsg == NULL)
8504 				return got_error_from_errno2("realpath",
8505 				    optarg);
8506 			break;
8507 		case 'm':
8508 			if (prepared_logmsg)
8509 				option_conflict('m', 'F');
8510 			logmsg = optarg;
8511 			break;
8512 		case 'N':
8513 			non_interactive = 1;
8514 			break;
8515 		case 'S':
8516 			allow_bad_symlinks = 1;
8517 			break;
8518 		default:
8519 			usage_commit();
8520 			/* NOTREACHED */
8521 		}
8522 	}
8523 
8524 	argc -= optind;
8525 	argv += optind;
8526 
8527 #ifndef PROFILE
8528 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8529 	    "unveil", NULL) == -1)
8530 		err(1, "pledge");
8531 #endif
8532 	cwd = getcwd(NULL, 0);
8533 	if (cwd == NULL) {
8534 		error = got_error_from_errno("getcwd");
8535 		goto done;
8536 	}
8537 
8538 	error = got_repo_pack_fds_open(&pack_fds);
8539 	if (error != NULL)
8540 		goto done;
8541 
8542 	error = got_worktree_open(&worktree, cwd);
8543 	if (error) {
8544 		if (error->code == GOT_ERR_NOT_WORKTREE)
8545 			error = wrap_not_worktree_error(error, "commit", cwd);
8546 		goto done;
8547 	}
8548 
8549 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
8550 	if (error)
8551 		goto done;
8552 	if (rebase_in_progress) {
8553 		error = got_error(GOT_ERR_REBASING);
8554 		goto done;
8555 	}
8556 
8557 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
8558 	    worktree);
8559 	if (error)
8560 		goto done;
8561 
8562 	error = get_gitconfig_path(&gitconfig_path);
8563 	if (error)
8564 		goto done;
8565 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8566 	    gitconfig_path, pack_fds);
8567 	if (error != NULL)
8568 		goto done;
8569 
8570 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
8571 	if (error)
8572 		goto done;
8573 	if (merge_in_progress) {
8574 		error = got_error(GOT_ERR_MERGE_BUSY);
8575 		goto done;
8576 	}
8577 
8578 	error = get_author(&author, repo, worktree);
8579 	if (error)
8580 		return error;
8581 
8582 	/*
8583 	 * unveil(2) traverses exec(2); if an editor is used we have
8584 	 * to apply unveil after the log message has been written.
8585 	 */
8586 	if (logmsg == NULL || strlen(logmsg) == 0)
8587 		error = get_editor(&editor);
8588 	else
8589 		error = apply_unveil(got_repo_get_path(repo), 0,
8590 		    got_worktree_get_root_path(worktree));
8591 	if (error)
8592 		goto done;
8593 
8594 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8595 	if (error)
8596 		goto done;
8597 
8598 	cl_arg.editor = editor;
8599 	cl_arg.cmdline_log = logmsg;
8600 	cl_arg.prepared_log = prepared_logmsg;
8601 	cl_arg.non_interactive = non_interactive;
8602 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
8603 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
8604 	if (!histedit_in_progress) {
8605 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
8606 			error = got_error(GOT_ERR_COMMIT_BRANCH);
8607 			goto done;
8608 		}
8609 		cl_arg.branch_name += 11;
8610 	}
8611 	cl_arg.repo_path = got_repo_get_path(repo);
8612 	error = got_worktree_commit(&id, worktree, &paths, author, NULL,
8613 	    allow_bad_symlinks, collect_commit_logmsg, &cl_arg,
8614 	    print_status, NULL, repo);
8615 	if (error) {
8616 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
8617 		    cl_arg.logmsg_path != NULL)
8618 			preserve_logmsg = 1;
8619 		goto done;
8620 	}
8621 
8622 	error = got_object_id_str(&id_str, id);
8623 	if (error)
8624 		goto done;
8625 	printf("Created commit %s\n", id_str);
8626 done:
8627 	if (preserve_logmsg) {
8628 		fprintf(stderr, "%s: log message preserved in %s\n",
8629 		    getprogname(), cl_arg.logmsg_path);
8630 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
8631 	    error == NULL)
8632 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
8633 	free(cl_arg.logmsg_path);
8634 	if (repo) {
8635 		const struct got_error *close_err = got_repo_close(repo);
8636 		if (error == NULL)
8637 			error = close_err;
8638 	}
8639 	if (worktree)
8640 		got_worktree_close(worktree);
8641 	if (pack_fds) {
8642 		const struct got_error *pack_err =
8643 		    got_repo_pack_fds_close(pack_fds);
8644 		if (error == NULL)
8645 			error = pack_err;
8646 	}
8647 	free(cwd);
8648 	free(id_str);
8649 	free(gitconfig_path);
8650 	free(editor);
8651 	free(author);
8652 	free(prepared_logmsg);
8653 	return error;
8654 }
8655 
8656 __dead static void
8657 usage_send(void)
8658 {
8659 	fprintf(stderr, "usage: %s send [-a] [-b branch] [-d branch] [-f] "
8660 	    "[-r repository-path] [-t tag] [-T] [-q] [-v] "
8661 	    "[remote-repository]\n", getprogname());
8662 	exit(1);
8663 }
8664 
8665 static void
8666 print_load_info(int print_colored, int print_found, int print_trees,
8667     int ncolored, int nfound, int ntrees)
8668 {
8669 	if (print_colored) {
8670 		printf("%d commit%s colored", ncolored,
8671 		    ncolored == 1 ? "" : "s");
8672 	}
8673 	if (print_found) {
8674 		printf("%s%d object%s found",
8675 		    ncolored > 0 ? "; " : "",
8676 		    nfound, nfound == 1 ? "" : "s");
8677 	}
8678 	if (print_trees) {
8679 		printf("; %d tree%s scanned", ntrees,
8680 		    ntrees == 1 ? "" : "s");
8681 	}
8682 }
8683 
8684 struct got_send_progress_arg {
8685 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
8686 	int verbosity;
8687 	int last_ncolored;
8688 	int last_nfound;
8689 	int last_ntrees;
8690 	int loading_done;
8691 	int last_ncommits;
8692 	int last_nobj_total;
8693 	int last_p_deltify;
8694 	int last_p_written;
8695 	int last_p_sent;
8696 	int printed_something;
8697 	int sent_something;
8698 	struct got_pathlist_head *delete_branches;
8699 };
8700 
8701 static const struct got_error *
8702 send_progress(void *arg, int ncolored, int nfound, int ntrees,
8703     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
8704     int nobj_written, off_t bytes_sent, const char *refname, int success)
8705 {
8706 	struct got_send_progress_arg *a = arg;
8707 	char scaled_packsize[FMT_SCALED_STRSIZE];
8708 	char scaled_sent[FMT_SCALED_STRSIZE];
8709 	int p_deltify = 0, p_written = 0, p_sent = 0;
8710 	int print_colored = 0, print_found = 0, print_trees = 0;
8711 	int print_searching = 0, print_total = 0;
8712 	int print_deltify = 0, print_written = 0, print_sent = 0;
8713 
8714 	if (a->verbosity < 0)
8715 		return NULL;
8716 
8717 	if (refname) {
8718 		const char *status = success ? "accepted" : "rejected";
8719 
8720 		if (success) {
8721 			struct got_pathlist_entry *pe;
8722 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
8723 				const char *branchname = pe->path;
8724 				if (got_path_cmp(branchname, refname,
8725 				    strlen(branchname), strlen(refname)) == 0) {
8726 					status = "deleted";
8727 					a->sent_something = 1;
8728 					break;
8729 				}
8730 			}
8731 		}
8732 
8733 		if (a->printed_something)
8734 			putchar('\n');
8735 		printf("Server has %s %s", status, refname);
8736 		a->printed_something = 1;
8737 		return NULL;
8738 	}
8739 
8740 	if (a->last_ncolored != ncolored) {
8741 		print_colored = 1;
8742 		a->last_ncolored = ncolored;
8743 	}
8744 
8745 	if (a->last_nfound != nfound) {
8746 		print_colored = 1;
8747 		print_found = 1;
8748 		a->last_nfound = nfound;
8749 	}
8750 
8751 	if (a->last_ntrees != ntrees) {
8752 		print_colored = 1;
8753 		print_found = 1;
8754 		print_trees = 1;
8755 		a->last_ntrees = ntrees;
8756 	}
8757 
8758 	if ((print_colored || print_found || print_trees) &&
8759 	    !a->loading_done) {
8760 		printf("\r");
8761 		print_load_info(print_colored, print_found, print_trees,
8762 		    ncolored, nfound, ntrees);
8763 		a->printed_something = 1;
8764 		fflush(stdout);
8765 		return NULL;
8766 	} else if (!a->loading_done) {
8767 		printf("\r");
8768 		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
8769 		printf("\n");
8770 		a->loading_done = 1;
8771 	}
8772 
8773 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
8774 		return got_error_from_errno("fmt_scaled");
8775 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
8776 		return got_error_from_errno("fmt_scaled");
8777 
8778 	if (a->last_ncommits != ncommits) {
8779 		print_searching = 1;
8780 		a->last_ncommits = ncommits;
8781 	}
8782 
8783 	if (a->last_nobj_total != nobj_total) {
8784 		print_searching = 1;
8785 		print_total = 1;
8786 		a->last_nobj_total = nobj_total;
8787 	}
8788 
8789 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
8790 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
8791 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
8792 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
8793 			return got_error(GOT_ERR_NO_SPACE);
8794 	}
8795 
8796 	if (nobj_deltify > 0 || nobj_written > 0) {
8797 		if (nobj_deltify > 0) {
8798 			p_deltify = (nobj_deltify * 100) / nobj_total;
8799 			if (p_deltify != a->last_p_deltify) {
8800 				a->last_p_deltify = p_deltify;
8801 				print_searching = 1;
8802 				print_total = 1;
8803 				print_deltify = 1;
8804 			}
8805 		}
8806 		if (nobj_written > 0) {
8807 			p_written = (nobj_written * 100) / nobj_total;
8808 			if (p_written != a->last_p_written) {
8809 				a->last_p_written = p_written;
8810 				print_searching = 1;
8811 				print_total = 1;
8812 				print_deltify = 1;
8813 				print_written = 1;
8814 			}
8815 		}
8816 	}
8817 
8818 	if (bytes_sent > 0) {
8819 		p_sent = (bytes_sent * 100) / packfile_size;
8820 		if (p_sent != a->last_p_sent) {
8821 			a->last_p_sent = p_sent;
8822 			print_searching = 1;
8823 			print_total = 1;
8824 			print_deltify = 1;
8825 			print_written = 1;
8826 			print_sent = 1;
8827 		}
8828 		a->sent_something = 1;
8829 	}
8830 
8831 	if (print_searching || print_total || print_deltify || print_written ||
8832 	    print_sent)
8833 		printf("\r");
8834 	if (print_searching)
8835 		printf("packing %d reference%s", ncommits,
8836 		    ncommits == 1 ? "" : "s");
8837 	if (print_total)
8838 		printf("; %d object%s", nobj_total,
8839 		    nobj_total == 1 ? "" : "s");
8840 	if (print_deltify)
8841 		printf("; deltify: %d%%", p_deltify);
8842 	if (print_sent)
8843 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
8844 		    scaled_packsize, p_sent);
8845 	else if (print_written)
8846 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
8847 		    scaled_packsize, p_written);
8848 	if (print_searching || print_total || print_deltify ||
8849 	    print_written || print_sent) {
8850 		a->printed_something = 1;
8851 		fflush(stdout);
8852 	}
8853 	return NULL;
8854 }
8855 
8856 static const struct got_error *
8857 cmd_send(int argc, char *argv[])
8858 {
8859 	const struct got_error *error = NULL;
8860 	char *cwd = NULL, *repo_path = NULL;
8861 	const char *remote_name;
8862 	char *proto = NULL, *host = NULL, *port = NULL;
8863 	char *repo_name = NULL, *server_path = NULL;
8864 	const struct got_remote_repo *remotes, *remote = NULL;
8865 	int nremotes, nbranches = 0, ntags = 0, ndelete_branches = 0;
8866 	struct got_repository *repo = NULL;
8867 	struct got_worktree *worktree = NULL;
8868 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
8869 	struct got_pathlist_head branches;
8870 	struct got_pathlist_head tags;
8871 	struct got_reflist_head all_branches;
8872 	struct got_reflist_head all_tags;
8873 	struct got_pathlist_head delete_args;
8874 	struct got_pathlist_head delete_branches;
8875 	struct got_reflist_entry *re;
8876 	struct got_pathlist_entry *pe;
8877 	int i, ch, sendfd = -1, sendstatus;
8878 	pid_t sendpid = -1;
8879 	struct got_send_progress_arg spa;
8880 	int verbosity = 0, overwrite_refs = 0;
8881 	int send_all_branches = 0, send_all_tags = 0;
8882 	struct got_reference *ref = NULL;
8883 	int *pack_fds = NULL;
8884 
8885 	TAILQ_INIT(&branches);
8886 	TAILQ_INIT(&tags);
8887 	TAILQ_INIT(&all_branches);
8888 	TAILQ_INIT(&all_tags);
8889 	TAILQ_INIT(&delete_args);
8890 	TAILQ_INIT(&delete_branches);
8891 
8892 	while ((ch = getopt(argc, argv, "ab:d:fr:t:Tvq")) != -1) {
8893 		switch (ch) {
8894 		case 'a':
8895 			send_all_branches = 1;
8896 			break;
8897 		case 'b':
8898 			error = got_pathlist_append(&branches, optarg, NULL);
8899 			if (error)
8900 				return error;
8901 			nbranches++;
8902 			break;
8903 		case 'd':
8904 			error = got_pathlist_append(&delete_args, optarg, NULL);
8905 			if (error)
8906 				return error;
8907 			break;
8908 		case 'f':
8909 			overwrite_refs = 1;
8910 			break;
8911 		case 'r':
8912 			repo_path = realpath(optarg, NULL);
8913 			if (repo_path == NULL)
8914 				return got_error_from_errno2("realpath",
8915 				    optarg);
8916 			got_path_strip_trailing_slashes(repo_path);
8917 			break;
8918 		case 't':
8919 			error = got_pathlist_append(&tags, optarg, NULL);
8920 			if (error)
8921 				return error;
8922 			ntags++;
8923 			break;
8924 		case 'T':
8925 			send_all_tags = 1;
8926 			break;
8927 		case 'v':
8928 			if (verbosity < 0)
8929 				verbosity = 0;
8930 			else if (verbosity < 3)
8931 				verbosity++;
8932 			break;
8933 		case 'q':
8934 			verbosity = -1;
8935 			break;
8936 		default:
8937 			usage_send();
8938 			/* NOTREACHED */
8939 		}
8940 	}
8941 	argc -= optind;
8942 	argv += optind;
8943 
8944 	if (send_all_branches && !TAILQ_EMPTY(&branches))
8945 		option_conflict('a', 'b');
8946 	if (send_all_tags && !TAILQ_EMPTY(&tags))
8947 		option_conflict('T', 't');
8948 
8949 
8950 	if (argc == 0)
8951 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
8952 	else if (argc == 1)
8953 		remote_name = argv[0];
8954 	else
8955 		usage_send();
8956 
8957 	cwd = getcwd(NULL, 0);
8958 	if (cwd == NULL) {
8959 		error = got_error_from_errno("getcwd");
8960 		goto done;
8961 	}
8962 
8963 	error = got_repo_pack_fds_open(&pack_fds);
8964 	if (error != NULL)
8965 		goto done;
8966 
8967 	if (repo_path == NULL) {
8968 		error = got_worktree_open(&worktree, cwd);
8969 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
8970 			goto done;
8971 		else
8972 			error = NULL;
8973 		if (worktree) {
8974 			repo_path =
8975 			    strdup(got_worktree_get_repo_path(worktree));
8976 			if (repo_path == NULL)
8977 				error = got_error_from_errno("strdup");
8978 			if (error)
8979 				goto done;
8980 		} else {
8981 			repo_path = strdup(cwd);
8982 			if (repo_path == NULL) {
8983 				error = got_error_from_errno("strdup");
8984 				goto done;
8985 			}
8986 		}
8987 	}
8988 
8989 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8990 	if (error)
8991 		goto done;
8992 
8993 	if (worktree) {
8994 		worktree_conf = got_worktree_get_gotconfig(worktree);
8995 		if (worktree_conf) {
8996 			got_gotconfig_get_remotes(&nremotes, &remotes,
8997 			    worktree_conf);
8998 			for (i = 0; i < nremotes; i++) {
8999 				if (strcmp(remotes[i].name, remote_name) == 0) {
9000 					remote = &remotes[i];
9001 					break;
9002 				}
9003 			}
9004 		}
9005 	}
9006 	if (remote == NULL) {
9007 		repo_conf = got_repo_get_gotconfig(repo);
9008 		if (repo_conf) {
9009 			got_gotconfig_get_remotes(&nremotes, &remotes,
9010 			    repo_conf);
9011 			for (i = 0; i < nremotes; i++) {
9012 				if (strcmp(remotes[i].name, remote_name) == 0) {
9013 					remote = &remotes[i];
9014 					break;
9015 				}
9016 			}
9017 		}
9018 	}
9019 	if (remote == NULL) {
9020 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
9021 		for (i = 0; i < nremotes; i++) {
9022 			if (strcmp(remotes[i].name, remote_name) == 0) {
9023 				remote = &remotes[i];
9024 				break;
9025 			}
9026 		}
9027 	}
9028 	if (remote == NULL) {
9029 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
9030 		goto done;
9031 	}
9032 
9033 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
9034 	    &repo_name, remote->send_url);
9035 	if (error)
9036 		goto done;
9037 
9038 	if (strcmp(proto, "git") == 0) {
9039 #ifndef PROFILE
9040 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9041 		    "sendfd dns inet unveil", NULL) == -1)
9042 			err(1, "pledge");
9043 #endif
9044 	} else if (strcmp(proto, "git+ssh") == 0 ||
9045 	    strcmp(proto, "ssh") == 0) {
9046 #ifndef PROFILE
9047 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9048 		    "sendfd unveil", NULL) == -1)
9049 			err(1, "pledge");
9050 #endif
9051 	} else if (strcmp(proto, "http") == 0 ||
9052 	    strcmp(proto, "git+http") == 0) {
9053 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
9054 		goto done;
9055 	} else {
9056 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
9057 		goto done;
9058 	}
9059 
9060 	error = got_dial_apply_unveil(proto);
9061 	if (error)
9062 		goto done;
9063 
9064 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
9065 	if (error)
9066 		goto done;
9067 
9068 	if (send_all_branches) {
9069 		error = got_ref_list(&all_branches, repo, "refs/heads",
9070 		    got_ref_cmp_by_name, NULL);
9071 		if (error)
9072 			goto done;
9073 		TAILQ_FOREACH(re, &all_branches, entry) {
9074 			const char *branchname = got_ref_get_name(re->ref);
9075 			error = got_pathlist_append(&branches,
9076 			    branchname, NULL);
9077 			if (error)
9078 				goto done;
9079 			nbranches++;
9080 		}
9081 	} else if (nbranches == 0) {
9082 		for (i = 0; i < remote->nsend_branches; i++) {
9083 			got_pathlist_append(&branches,
9084 			    remote->send_branches[i], NULL);
9085 		}
9086 	}
9087 
9088 	if (send_all_tags) {
9089 		error = got_ref_list(&all_tags, repo, "refs/tags",
9090 		    got_ref_cmp_by_name, NULL);
9091 		if (error)
9092 			goto done;
9093 		TAILQ_FOREACH(re, &all_tags, entry) {
9094 			const char *tagname = got_ref_get_name(re->ref);
9095 			error = got_pathlist_append(&tags,
9096 			    tagname, NULL);
9097 			if (error)
9098 				goto done;
9099 			ntags++;
9100 		}
9101 	}
9102 
9103 	/*
9104 	 * To prevent accidents only branches in refs/heads/ can be deleted
9105 	 * with 'got send -d'.
9106 	 * Deleting anything else requires local repository access or Git.
9107 	 */
9108 	TAILQ_FOREACH(pe, &delete_args, entry) {
9109 		const char *branchname = pe->path;
9110 		char *s;
9111 		struct got_pathlist_entry *new;
9112 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
9113 			s = strdup(branchname);
9114 			if (s == NULL) {
9115 				error = got_error_from_errno("strdup");
9116 				goto done;
9117 			}
9118 		} else {
9119 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
9120 				error = got_error_from_errno("asprintf");
9121 				goto done;
9122 			}
9123 		}
9124 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
9125 		if (error || new == NULL /* duplicate */)
9126 			free(s);
9127 		if (error)
9128 			goto done;
9129 		ndelete_branches++;
9130 	}
9131 
9132 	if (nbranches == 0 && ndelete_branches == 0) {
9133 		struct got_reference *head_ref;
9134 		if (worktree)
9135 			error = got_ref_open(&head_ref, repo,
9136 			    got_worktree_get_head_ref_name(worktree), 0);
9137 		else
9138 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
9139 		if (error)
9140 			goto done;
9141 		if (got_ref_is_symbolic(head_ref)) {
9142 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
9143 			got_ref_close(head_ref);
9144 			if (error)
9145 				goto done;
9146 		} else
9147 			ref = head_ref;
9148 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
9149 		    NULL);
9150 		if (error)
9151 			goto done;
9152 		nbranches++;
9153 	}
9154 
9155 	if (verbosity >= 0)
9156 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
9157 		    port ? ":" : "", port ? port : "");
9158 
9159 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
9160 	    server_path, verbosity);
9161 	if (error)
9162 		goto done;
9163 
9164 	memset(&spa, 0, sizeof(spa));
9165 	spa.last_scaled_packsize[0] = '\0';
9166 	spa.last_p_deltify = -1;
9167 	spa.last_p_written = -1;
9168 	spa.verbosity = verbosity;
9169 	spa.delete_branches = &delete_branches;
9170 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
9171 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
9172 	    check_cancelled, NULL);
9173 	if (spa.printed_something)
9174 		putchar('\n');
9175 	if (error)
9176 		goto done;
9177 	if (!spa.sent_something && verbosity >= 0)
9178 		printf("Already up-to-date\n");
9179 done:
9180 	if (sendpid > 0) {
9181 		if (kill(sendpid, SIGTERM) == -1)
9182 			error = got_error_from_errno("kill");
9183 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
9184 			error = got_error_from_errno("waitpid");
9185 	}
9186 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
9187 		error = got_error_from_errno("close");
9188 	if (repo) {
9189 		const struct got_error *close_err = got_repo_close(repo);
9190 		if (error == NULL)
9191 			error = close_err;
9192 	}
9193 	if (worktree)
9194 		got_worktree_close(worktree);
9195 	if (pack_fds) {
9196 		const struct got_error *pack_err =
9197 		    got_repo_pack_fds_close(pack_fds);
9198 		if (error == NULL)
9199 			error = pack_err;
9200 	}
9201 	if (ref)
9202 		got_ref_close(ref);
9203 	got_pathlist_free(&branches);
9204 	got_pathlist_free(&tags);
9205 	got_ref_list_free(&all_branches);
9206 	got_ref_list_free(&all_tags);
9207 	got_pathlist_free(&delete_args);
9208 	TAILQ_FOREACH(pe, &delete_branches, entry)
9209 		free((char *)pe->path);
9210 	got_pathlist_free(&delete_branches);
9211 	free(cwd);
9212 	free(repo_path);
9213 	free(proto);
9214 	free(host);
9215 	free(port);
9216 	free(server_path);
9217 	free(repo_name);
9218 	return error;
9219 }
9220 
9221 __dead static void
9222 usage_cherrypick(void)
9223 {
9224 	fprintf(stderr, "usage: %s cherrypick commit-id\n", getprogname());
9225 	exit(1);
9226 }
9227 
9228 static const struct got_error *
9229 cmd_cherrypick(int argc, char *argv[])
9230 {
9231 	const struct got_error *error = NULL;
9232 	struct got_worktree *worktree = NULL;
9233 	struct got_repository *repo = NULL;
9234 	char *cwd = NULL, *commit_id_str = NULL;
9235 	struct got_object_id *commit_id = NULL;
9236 	struct got_commit_object *commit = NULL;
9237 	struct got_object_qid *pid;
9238 	int ch;
9239 	struct got_update_progress_arg upa;
9240 	int *pack_fds = NULL;
9241 
9242 	while ((ch = getopt(argc, argv, "")) != -1) {
9243 		switch (ch) {
9244 		default:
9245 			usage_cherrypick();
9246 			/* NOTREACHED */
9247 		}
9248 	}
9249 
9250 	argc -= optind;
9251 	argv += optind;
9252 
9253 #ifndef PROFILE
9254 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9255 	    "unveil", NULL) == -1)
9256 		err(1, "pledge");
9257 #endif
9258 	if (argc != 1)
9259 		usage_cherrypick();
9260 
9261 	cwd = getcwd(NULL, 0);
9262 	if (cwd == NULL) {
9263 		error = got_error_from_errno("getcwd");
9264 		goto done;
9265 	}
9266 
9267 	error = got_repo_pack_fds_open(&pack_fds);
9268 	if (error != NULL)
9269 		goto done;
9270 
9271 	error = got_worktree_open(&worktree, cwd);
9272 	if (error) {
9273 		if (error->code == GOT_ERR_NOT_WORKTREE)
9274 			error = wrap_not_worktree_error(error, "cherrypick",
9275 			    cwd);
9276 		goto done;
9277 	}
9278 
9279 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9280 	    NULL, pack_fds);
9281 	if (error != NULL)
9282 		goto done;
9283 
9284 	error = apply_unveil(got_repo_get_path(repo), 0,
9285 	    got_worktree_get_root_path(worktree));
9286 	if (error)
9287 		goto done;
9288 
9289 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
9290 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9291 	if (error)
9292 		goto done;
9293 	error = got_object_id_str(&commit_id_str, commit_id);
9294 	if (error)
9295 		goto done;
9296 
9297 	error = got_object_open_as_commit(&commit, repo, commit_id);
9298 	if (error)
9299 		goto done;
9300 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
9301 	memset(&upa, 0, sizeof(upa));
9302 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
9303 	    commit_id, repo, update_progress, &upa, check_cancelled,
9304 	    NULL);
9305 	if (error != NULL)
9306 		goto done;
9307 
9308 	if (upa.did_something)
9309 		printf("Merged commit %s\n", commit_id_str);
9310 	print_merge_progress_stats(&upa);
9311 done:
9312 	if (commit)
9313 		got_object_commit_close(commit);
9314 	free(commit_id_str);
9315 	if (worktree)
9316 		got_worktree_close(worktree);
9317 	if (repo) {
9318 		const struct got_error *close_err = got_repo_close(repo);
9319 		if (error == NULL)
9320 			error = close_err;
9321 	}
9322 	if (pack_fds) {
9323 		const struct got_error *pack_err =
9324 		    got_repo_pack_fds_close(pack_fds);
9325 		if (error == NULL)
9326 			error = pack_err;
9327 	}
9328 
9329 	return error;
9330 }
9331 
9332 __dead static void
9333 usage_backout(void)
9334 {
9335 	fprintf(stderr, "usage: %s backout commit-id\n", getprogname());
9336 	exit(1);
9337 }
9338 
9339 static const struct got_error *
9340 cmd_backout(int argc, char *argv[])
9341 {
9342 	const struct got_error *error = NULL;
9343 	struct got_worktree *worktree = NULL;
9344 	struct got_repository *repo = NULL;
9345 	char *cwd = NULL, *commit_id_str = NULL;
9346 	struct got_object_id *commit_id = NULL;
9347 	struct got_commit_object *commit = NULL;
9348 	struct got_object_qid *pid;
9349 	int ch;
9350 	struct got_update_progress_arg upa;
9351 	int *pack_fds = NULL;
9352 
9353 	while ((ch = getopt(argc, argv, "")) != -1) {
9354 		switch (ch) {
9355 		default:
9356 			usage_backout();
9357 			/* NOTREACHED */
9358 		}
9359 	}
9360 
9361 	argc -= optind;
9362 	argv += optind;
9363 
9364 #ifndef PROFILE
9365 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9366 	    "unveil", NULL) == -1)
9367 		err(1, "pledge");
9368 #endif
9369 	if (argc != 1)
9370 		usage_backout();
9371 
9372 	cwd = getcwd(NULL, 0);
9373 	if (cwd == NULL) {
9374 		error = got_error_from_errno("getcwd");
9375 		goto done;
9376 	}
9377 
9378 	error = got_repo_pack_fds_open(&pack_fds);
9379 	if (error != NULL)
9380 		goto done;
9381 
9382 	error = got_worktree_open(&worktree, cwd);
9383 	if (error) {
9384 		if (error->code == GOT_ERR_NOT_WORKTREE)
9385 			error = wrap_not_worktree_error(error, "backout", cwd);
9386 		goto done;
9387 	}
9388 
9389 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9390 	    NULL, pack_fds);
9391 	if (error != NULL)
9392 		goto done;
9393 
9394 	error = apply_unveil(got_repo_get_path(repo), 0,
9395 	    got_worktree_get_root_path(worktree));
9396 	if (error)
9397 		goto done;
9398 
9399 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
9400 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9401 	if (error)
9402 		goto done;
9403 	error = got_object_id_str(&commit_id_str, commit_id);
9404 	if (error)
9405 		goto done;
9406 
9407 	error = got_object_open_as_commit(&commit, repo, commit_id);
9408 	if (error)
9409 		goto done;
9410 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
9411 	if (pid == NULL) {
9412 		error = got_error(GOT_ERR_ROOT_COMMIT);
9413 		goto done;
9414 	}
9415 
9416 	memset(&upa, 0, sizeof(upa));
9417 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
9418 	    repo, update_progress, &upa, check_cancelled, NULL);
9419 	if (error != NULL)
9420 		goto done;
9421 
9422 	if (upa.did_something)
9423 		printf("Backed out commit %s\n", commit_id_str);
9424 	print_merge_progress_stats(&upa);
9425 done:
9426 	if (commit)
9427 		got_object_commit_close(commit);
9428 	free(commit_id_str);
9429 	if (worktree)
9430 		got_worktree_close(worktree);
9431 	if (repo) {
9432 		const struct got_error *close_err = got_repo_close(repo);
9433 		if (error == NULL)
9434 			error = close_err;
9435 	}
9436 	if (pack_fds) {
9437 		const struct got_error *pack_err =
9438 		    got_repo_pack_fds_close(pack_fds);
9439 		if (error == NULL)
9440 			error = pack_err;
9441 	}
9442 	return error;
9443 }
9444 
9445 __dead static void
9446 usage_rebase(void)
9447 {
9448 	fprintf(stderr, "usage: %s rebase [-a] [-c] [-l] [-X] [branch]\n",
9449 	    getprogname());
9450 	exit(1);
9451 }
9452 
9453 static void
9454 trim_logmsg(char *logmsg, int limit)
9455 {
9456 	char *nl;
9457 	size_t len;
9458 
9459 	len = strlen(logmsg);
9460 	if (len > limit)
9461 		len = limit;
9462 	logmsg[len] = '\0';
9463 	nl = strchr(logmsg, '\n');
9464 	if (nl)
9465 		*nl = '\0';
9466 }
9467 
9468 static const struct got_error *
9469 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
9470 {
9471 	const struct got_error *err;
9472 	char *logmsg0 = NULL;
9473 	const char *s;
9474 
9475 	err = got_object_commit_get_logmsg(&logmsg0, commit);
9476 	if (err)
9477 		return err;
9478 
9479 	s = logmsg0;
9480 	while (isspace((unsigned char)s[0]))
9481 		s++;
9482 
9483 	*logmsg = strdup(s);
9484 	if (*logmsg == NULL) {
9485 		err = got_error_from_errno("strdup");
9486 		goto done;
9487 	}
9488 
9489 	trim_logmsg(*logmsg, limit);
9490 done:
9491 	free(logmsg0);
9492 	return err;
9493 }
9494 
9495 static const struct got_error *
9496 show_rebase_merge_conflict(struct got_object_id *id,
9497     struct got_repository *repo)
9498 {
9499 	const struct got_error *err;
9500 	struct got_commit_object *commit = NULL;
9501 	char *id_str = NULL, *logmsg = NULL;
9502 
9503 	err = got_object_open_as_commit(&commit, repo, id);
9504 	if (err)
9505 		return err;
9506 
9507 	err = got_object_id_str(&id_str, id);
9508 	if (err)
9509 		goto done;
9510 
9511 	id_str[12] = '\0';
9512 
9513 	err = get_short_logmsg(&logmsg, 42, commit);
9514 	if (err)
9515 		goto done;
9516 
9517 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
9518 done:
9519 	free(id_str);
9520 	got_object_commit_close(commit);
9521 	free(logmsg);
9522 	return err;
9523 }
9524 
9525 static const struct got_error *
9526 show_rebase_progress(struct got_commit_object *commit,
9527     struct got_object_id *old_id, struct got_object_id *new_id)
9528 {
9529 	const struct got_error *err;
9530 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
9531 
9532 	err = got_object_id_str(&old_id_str, old_id);
9533 	if (err)
9534 		goto done;
9535 
9536 	if (new_id) {
9537 		err = got_object_id_str(&new_id_str, new_id);
9538 		if (err)
9539 			goto done;
9540 	}
9541 
9542 	old_id_str[12] = '\0';
9543 	if (new_id_str)
9544 		new_id_str[12] = '\0';
9545 
9546 	err = get_short_logmsg(&logmsg, 42, commit);
9547 	if (err)
9548 		goto done;
9549 
9550 	printf("%s -> %s: %s\n", old_id_str,
9551 	    new_id_str ? new_id_str : "no-op change", logmsg);
9552 done:
9553 	free(old_id_str);
9554 	free(new_id_str);
9555 	free(logmsg);
9556 	return err;
9557 }
9558 
9559 static const struct got_error *
9560 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
9561     struct got_reference *branch, struct got_reference *new_base_branch,
9562     struct got_reference *tmp_branch, struct got_repository *repo,
9563     int create_backup)
9564 {
9565 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
9566 	return got_worktree_rebase_complete(worktree, fileindex,
9567 	    new_base_branch, tmp_branch, branch, repo, create_backup);
9568 }
9569 
9570 static const struct got_error *
9571 rebase_commit(struct got_pathlist_head *merged_paths,
9572     struct got_worktree *worktree, struct got_fileindex *fileindex,
9573     struct got_reference *tmp_branch,
9574     struct got_object_id *commit_id, struct got_repository *repo)
9575 {
9576 	const struct got_error *error;
9577 	struct got_commit_object *commit;
9578 	struct got_object_id *new_commit_id;
9579 
9580 	error = got_object_open_as_commit(&commit, repo, commit_id);
9581 	if (error)
9582 		return error;
9583 
9584 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
9585 	    worktree, fileindex, tmp_branch, commit, commit_id, repo);
9586 	if (error) {
9587 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
9588 			goto done;
9589 		error = show_rebase_progress(commit, commit_id, NULL);
9590 	} else {
9591 		error = show_rebase_progress(commit, commit_id, new_commit_id);
9592 		free(new_commit_id);
9593 	}
9594 done:
9595 	got_object_commit_close(commit);
9596 	return error;
9597 }
9598 
9599 struct check_path_prefix_arg {
9600 	const char *path_prefix;
9601 	size_t len;
9602 	int errcode;
9603 };
9604 
9605 static const struct got_error *
9606 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
9607     struct got_blob_object *blob2, FILE *f1, FILE *f2,
9608     struct got_object_id *id1, struct got_object_id *id2,
9609     const char *path1, const char *path2,
9610     mode_t mode1, mode_t mode2, struct got_repository *repo)
9611 {
9612 	struct check_path_prefix_arg *a = arg;
9613 
9614 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
9615 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
9616 		return got_error(a->errcode);
9617 
9618 	return NULL;
9619 }
9620 
9621 static const struct got_error *
9622 check_path_prefix(struct got_object_id *parent_id,
9623     struct got_object_id *commit_id, const char *path_prefix,
9624     int errcode, struct got_repository *repo)
9625 {
9626 	const struct got_error *err;
9627 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
9628 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
9629 	struct check_path_prefix_arg cpp_arg;
9630 
9631 	if (got_path_is_root_dir(path_prefix))
9632 		return NULL;
9633 
9634 	err = got_object_open_as_commit(&commit, repo, commit_id);
9635 	if (err)
9636 		goto done;
9637 
9638 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
9639 	if (err)
9640 		goto done;
9641 
9642 	err = got_object_open_as_tree(&tree1, repo,
9643 	    got_object_commit_get_tree_id(parent_commit));
9644 	if (err)
9645 		goto done;
9646 
9647 	err = got_object_open_as_tree(&tree2, repo,
9648 	    got_object_commit_get_tree_id(commit));
9649 	if (err)
9650 		goto done;
9651 
9652 	cpp_arg.path_prefix = path_prefix;
9653 	while (cpp_arg.path_prefix[0] == '/')
9654 		cpp_arg.path_prefix++;
9655 	cpp_arg.len = strlen(cpp_arg.path_prefix);
9656 	cpp_arg.errcode = errcode;
9657 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
9658 	    check_path_prefix_in_diff, &cpp_arg, 0);
9659 done:
9660 	if (tree1)
9661 		got_object_tree_close(tree1);
9662 	if (tree2)
9663 		got_object_tree_close(tree2);
9664 	if (commit)
9665 		got_object_commit_close(commit);
9666 	if (parent_commit)
9667 		got_object_commit_close(parent_commit);
9668 	return err;
9669 }
9670 
9671 static const struct got_error *
9672 collect_commits(struct got_object_id_queue *commits,
9673     struct got_object_id *initial_commit_id,
9674     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
9675     const char *path_prefix, int path_prefix_errcode,
9676     struct got_repository *repo)
9677 {
9678 	const struct got_error *err = NULL;
9679 	struct got_commit_graph *graph = NULL;
9680 	struct got_object_id *parent_id = NULL;
9681 	struct got_object_qid *qid;
9682         struct got_object_id *commit_id = initial_commit_id;
9683 
9684 	err = got_commit_graph_open(&graph, "/", 1);
9685 	if (err)
9686 		return err;
9687 
9688 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
9689 	    check_cancelled, NULL);
9690 	if (err)
9691 		goto done;
9692 	while (got_object_id_cmp(commit_id, iter_stop_id) != 0) {
9693 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
9694 		    check_cancelled, NULL);
9695 		if (err) {
9696 			if (err->code == GOT_ERR_ITER_COMPLETED) {
9697 				err = got_error_msg(GOT_ERR_ANCESTRY,
9698 				    "ran out of commits to rebase before "
9699 				    "youngest common ancestor commit has "
9700 				    "been reached?!?");
9701 			}
9702 			goto done;
9703 		} else {
9704 			err = check_path_prefix(parent_id, commit_id,
9705 			    path_prefix, path_prefix_errcode, repo);
9706 			if (err)
9707 				goto done;
9708 
9709 			err = got_object_qid_alloc(&qid, commit_id);
9710 			if (err)
9711 				goto done;
9712 			STAILQ_INSERT_HEAD(commits, qid, entry);
9713 			commit_id = parent_id;
9714 		}
9715 	}
9716 done:
9717 	got_commit_graph_close(graph);
9718 	return err;
9719 }
9720 
9721 static const struct got_error *
9722 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
9723 {
9724 	const struct got_error *err = NULL;
9725 	time_t committer_time;
9726 	struct tm tm;
9727 	char datebuf[11]; /* YYYY-MM-DD + NUL */
9728 	char *author0 = NULL, *author, *smallerthan;
9729 	char *logmsg0 = NULL, *logmsg, *newline;
9730 
9731 	committer_time = got_object_commit_get_committer_time(commit);
9732 	if (gmtime_r(&committer_time, &tm) == NULL)
9733 		return got_error_from_errno("gmtime_r");
9734 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
9735 		return got_error(GOT_ERR_NO_SPACE);
9736 
9737 	author0 = strdup(got_object_commit_get_author(commit));
9738 	if (author0 == NULL)
9739 		return got_error_from_errno("strdup");
9740 	author = author0;
9741 	smallerthan = strchr(author, '<');
9742 	if (smallerthan && smallerthan[1] != '\0')
9743 		author = smallerthan + 1;
9744 	author[strcspn(author, "@>")] = '\0';
9745 
9746 	err = got_object_commit_get_logmsg(&logmsg0, commit);
9747 	if (err)
9748 		goto done;
9749 	logmsg = logmsg0;
9750 	while (*logmsg == '\n')
9751 		logmsg++;
9752 	newline = strchr(logmsg, '\n');
9753 	if (newline)
9754 		*newline = '\0';
9755 
9756 	if (asprintf(brief_str, "%s %s  %s",
9757 	    datebuf, author, logmsg) == -1)
9758 		err = got_error_from_errno("asprintf");
9759 done:
9760 	free(author0);
9761 	free(logmsg0);
9762 	return err;
9763 }
9764 
9765 static const struct got_error *
9766 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
9767     struct got_repository *repo)
9768 {
9769 	const struct got_error *err;
9770 	char *id_str;
9771 
9772 	err = got_object_id_str(&id_str, id);
9773 	if (err)
9774 		return err;
9775 
9776 	err = got_ref_delete(ref, repo);
9777 	if (err)
9778 		goto done;
9779 
9780 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
9781 done:
9782 	free(id_str);
9783 	return err;
9784 }
9785 
9786 static const struct got_error *
9787 print_backup_ref(const char *branch_name, const char *new_id_str,
9788     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
9789     struct got_reflist_object_id_map *refs_idmap,
9790     struct got_repository *repo)
9791 {
9792 	const struct got_error *err = NULL;
9793 	struct got_reflist_head *refs;
9794 	char *refs_str = NULL;
9795 	struct got_object_id *new_commit_id = NULL;
9796 	struct got_commit_object *new_commit = NULL;
9797 	char *new_commit_brief_str = NULL;
9798 	struct got_object_id *yca_id = NULL;
9799 	struct got_commit_object *yca_commit = NULL;
9800 	char *yca_id_str = NULL, *yca_brief_str = NULL;
9801 	char *custom_refs_str;
9802 
9803 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
9804 		return got_error_from_errno("asprintf");
9805 
9806 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL,
9807 	    0, 0, refs_idmap, custom_refs_str);
9808 	if (err)
9809 		goto done;
9810 
9811 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
9812 	if (err)
9813 		goto done;
9814 
9815 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
9816 	if (refs) {
9817 		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
9818 		if (err)
9819 			goto done;
9820 	}
9821 
9822 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
9823 	if (err)
9824 		goto done;
9825 
9826 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
9827 	if (err)
9828 		goto done;
9829 
9830 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
9831 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
9832 	if (err)
9833 		goto done;
9834 
9835 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
9836 	    refs_str ? " (" : "", refs_str ? refs_str : "",
9837 	    refs_str ? ")" : "", new_commit_brief_str);
9838 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
9839 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
9840 		free(refs_str);
9841 		refs_str = NULL;
9842 
9843 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
9844 		if (err)
9845 			goto done;
9846 
9847 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
9848 		if (err)
9849 			goto done;
9850 
9851 		err = got_object_id_str(&yca_id_str, yca_id);
9852 		if (err)
9853 			goto done;
9854 
9855 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
9856 		if (refs) {
9857 			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
9858 			if (err)
9859 				goto done;
9860 		}
9861 		printf("history forked at %s%s%s%s\n %s\n",
9862 		    yca_id_str,
9863 		    refs_str ? " (" : "", refs_str ? refs_str : "",
9864 		    refs_str ? ")" : "", yca_brief_str);
9865 	}
9866 done:
9867 	free(custom_refs_str);
9868 	free(new_commit_id);
9869 	free(refs_str);
9870 	free(yca_id);
9871 	free(yca_id_str);
9872 	free(yca_brief_str);
9873 	if (new_commit)
9874 		got_object_commit_close(new_commit);
9875 	if (yca_commit)
9876 		got_object_commit_close(yca_commit);
9877 
9878 	return NULL;
9879 }
9880 
9881 static const struct got_error *
9882 process_backup_refs(const char *backup_ref_prefix,
9883     const char *wanted_branch_name,
9884     int delete, struct got_repository *repo)
9885 {
9886 	const struct got_error *err;
9887 	struct got_reflist_head refs, backup_refs;
9888 	struct got_reflist_entry *re;
9889 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
9890 	struct got_object_id *old_commit_id = NULL;
9891 	char *branch_name = NULL;
9892 	struct got_commit_object *old_commit = NULL;
9893 	struct got_reflist_object_id_map *refs_idmap = NULL;
9894 	int wanted_branch_found = 0;
9895 
9896 	TAILQ_INIT(&refs);
9897 	TAILQ_INIT(&backup_refs);
9898 
9899 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
9900 	if (err)
9901 		return err;
9902 
9903 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
9904 	if (err)
9905 		goto done;
9906 
9907 	if (wanted_branch_name) {
9908 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
9909 			wanted_branch_name += 11;
9910 	}
9911 
9912 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
9913 	    got_ref_cmp_by_commit_timestamp_descending, repo);
9914 	if (err)
9915 		goto done;
9916 
9917 	TAILQ_FOREACH(re, &backup_refs, entry) {
9918 		const char *refname = got_ref_get_name(re->ref);
9919 		char *slash;
9920 
9921 		err = check_cancelled(NULL);
9922 		if (err)
9923 			break;
9924 
9925 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
9926 		if (err)
9927 			break;
9928 
9929 		err = got_object_open_as_commit(&old_commit, repo,
9930 		    old_commit_id);
9931 		if (err)
9932 			break;
9933 
9934 		if (strncmp(backup_ref_prefix, refname,
9935 		    backup_ref_prefix_len) == 0)
9936 			refname += backup_ref_prefix_len;
9937 
9938 		while (refname[0] == '/')
9939 			refname++;
9940 
9941 		branch_name = strdup(refname);
9942 		if (branch_name == NULL) {
9943 			err = got_error_from_errno("strdup");
9944 			break;
9945 		}
9946 		slash = strrchr(branch_name, '/');
9947 		if (slash) {
9948 			*slash = '\0';
9949 			refname += strlen(branch_name) + 1;
9950 		}
9951 
9952 		if (wanted_branch_name == NULL ||
9953 		    strcmp(wanted_branch_name, branch_name) == 0) {
9954 			wanted_branch_found = 1;
9955 			if (delete) {
9956 				err = delete_backup_ref(re->ref,
9957 				    old_commit_id, repo);
9958 			} else {
9959 				err = print_backup_ref(branch_name, refname,
9960 				    old_commit_id, old_commit, refs_idmap,
9961 				    repo);
9962 			}
9963 			if (err)
9964 				break;
9965 		}
9966 
9967 		free(old_commit_id);
9968 		old_commit_id = NULL;
9969 		free(branch_name);
9970 		branch_name = NULL;
9971 		got_object_commit_close(old_commit);
9972 		old_commit = NULL;
9973 	}
9974 
9975 	if (wanted_branch_name && !wanted_branch_found) {
9976 		err = got_error_fmt(GOT_ERR_NOT_REF,
9977 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
9978 	}
9979 done:
9980 	if (refs_idmap)
9981 		got_reflist_object_id_map_free(refs_idmap);
9982 	got_ref_list_free(&refs);
9983 	got_ref_list_free(&backup_refs);
9984 	free(old_commit_id);
9985 	free(branch_name);
9986 	if (old_commit)
9987 		got_object_commit_close(old_commit);
9988 	return err;
9989 }
9990 
9991 static const struct got_error *
9992 abort_progress(void *arg, unsigned char status, const char *path)
9993 {
9994 	/*
9995 	 * Unversioned files should not clutter progress output when
9996 	 * an operation is aborted.
9997 	 */
9998 	if (status == GOT_STATUS_UNVERSIONED)
9999 		return NULL;
10000 
10001 	return update_progress(arg, status, path);
10002 }
10003 
10004 static const struct got_error *
10005 cmd_rebase(int argc, char *argv[])
10006 {
10007 	const struct got_error *error = NULL;
10008 	struct got_worktree *worktree = NULL;
10009 	struct got_repository *repo = NULL;
10010 	struct got_fileindex *fileindex = NULL;
10011 	char *cwd = NULL;
10012 	struct got_reference *branch = NULL;
10013 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
10014 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
10015 	struct got_object_id *resume_commit_id = NULL;
10016 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
10017 	struct got_commit_object *commit = NULL;
10018 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
10019 	int histedit_in_progress = 0, merge_in_progress = 0;
10020 	int create_backup = 1, list_backups = 0, delete_backups = 0;
10021 	struct got_object_id_queue commits;
10022 	struct got_pathlist_head merged_paths;
10023 	const struct got_object_id_queue *parent_ids;
10024 	struct got_object_qid *qid, *pid;
10025 	struct got_update_progress_arg upa;
10026 	int *pack_fds = NULL;
10027 
10028 	STAILQ_INIT(&commits);
10029 	TAILQ_INIT(&merged_paths);
10030 	memset(&upa, 0, sizeof(upa));
10031 
10032 	while ((ch = getopt(argc, argv, "aclX")) != -1) {
10033 		switch (ch) {
10034 		case 'a':
10035 			abort_rebase = 1;
10036 			break;
10037 		case 'c':
10038 			continue_rebase = 1;
10039 			break;
10040 		case 'l':
10041 			list_backups = 1;
10042 			break;
10043 		case 'X':
10044 			delete_backups = 1;
10045 			break;
10046 		default:
10047 			usage_rebase();
10048 			/* NOTREACHED */
10049 		}
10050 	}
10051 
10052 	argc -= optind;
10053 	argv += optind;
10054 
10055 #ifndef PROFILE
10056 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10057 	    "unveil", NULL) == -1)
10058 		err(1, "pledge");
10059 #endif
10060 	if (list_backups) {
10061 		if (abort_rebase)
10062 			option_conflict('l', 'a');
10063 		if (continue_rebase)
10064 			option_conflict('l', 'c');
10065 		if (delete_backups)
10066 			option_conflict('l', 'X');
10067 		if (argc != 0 && argc != 1)
10068 			usage_rebase();
10069 	} else if (delete_backups) {
10070 		if (abort_rebase)
10071 			option_conflict('X', 'a');
10072 		if (continue_rebase)
10073 			option_conflict('X', 'c');
10074 		if (list_backups)
10075 			option_conflict('l', 'X');
10076 		if (argc != 0 && argc != 1)
10077 			usage_rebase();
10078 	} else {
10079 		if (abort_rebase && continue_rebase)
10080 			usage_rebase();
10081 		else if (abort_rebase || continue_rebase) {
10082 			if (argc != 0)
10083 				usage_rebase();
10084 		} else if (argc != 1)
10085 			usage_rebase();
10086 	}
10087 
10088 	cwd = getcwd(NULL, 0);
10089 	if (cwd == NULL) {
10090 		error = got_error_from_errno("getcwd");
10091 		goto done;
10092 	}
10093 
10094 	error = got_repo_pack_fds_open(&pack_fds);
10095 	if (error != NULL)
10096 		goto done;
10097 
10098 	error = got_worktree_open(&worktree, cwd);
10099 	if (error) {
10100 		if (list_backups || delete_backups) {
10101 			if (error->code != GOT_ERR_NOT_WORKTREE)
10102 				goto done;
10103 		} else {
10104 			if (error->code == GOT_ERR_NOT_WORKTREE)
10105 				error = wrap_not_worktree_error(error,
10106 				    "rebase", cwd);
10107 			goto done;
10108 		}
10109 	}
10110 
10111 	error = got_repo_open(&repo,
10112 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL,
10113 	    pack_fds);
10114 	if (error != NULL)
10115 		goto done;
10116 
10117 	error = apply_unveil(got_repo_get_path(repo), 0,
10118 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10119 	if (error)
10120 		goto done;
10121 
10122 	if (list_backups || delete_backups) {
10123 		error = process_backup_refs(
10124 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
10125 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
10126 		goto done; /* nothing else to do */
10127 	}
10128 
10129 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
10130 	    worktree);
10131 	if (error)
10132 		goto done;
10133 	if (histedit_in_progress) {
10134 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
10135 		goto done;
10136 	}
10137 
10138 	error = got_worktree_merge_in_progress(&merge_in_progress,
10139 	    worktree, repo);
10140 	if (error)
10141 		goto done;
10142 	if (merge_in_progress) {
10143 		error = got_error(GOT_ERR_MERGE_BUSY);
10144 		goto done;
10145 	}
10146 
10147 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10148 	if (error)
10149 		goto done;
10150 
10151 	if (abort_rebase) {
10152 		if (!rebase_in_progress) {
10153 			error = got_error(GOT_ERR_NOT_REBASING);
10154 			goto done;
10155 		}
10156 		error = got_worktree_rebase_continue(&resume_commit_id,
10157 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
10158 		    worktree, repo);
10159 		if (error)
10160 			goto done;
10161 		printf("Switching work tree to %s\n",
10162 		    got_ref_get_symref_target(new_base_branch));
10163 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
10164 		    new_base_branch, abort_progress, &upa);
10165 		if (error)
10166 			goto done;
10167 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
10168 		print_merge_progress_stats(&upa);
10169 		goto done; /* nothing else to do */
10170 	}
10171 
10172 	if (continue_rebase) {
10173 		if (!rebase_in_progress) {
10174 			error = got_error(GOT_ERR_NOT_REBASING);
10175 			goto done;
10176 		}
10177 		error = got_worktree_rebase_continue(&resume_commit_id,
10178 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
10179 		    worktree, repo);
10180 		if (error)
10181 			goto done;
10182 
10183 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
10184 		    resume_commit_id, repo);
10185 		if (error)
10186 			goto done;
10187 
10188 		yca_id = got_object_id_dup(resume_commit_id);
10189 		if (yca_id == NULL) {
10190 			error = got_error_from_errno("got_object_id_dup");
10191 			goto done;
10192 		}
10193 	} else {
10194 		error = got_ref_open(&branch, repo, argv[0], 0);
10195 		if (error != NULL)
10196 			goto done;
10197 	}
10198 
10199 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
10200 	if (error)
10201 		goto done;
10202 
10203 	if (!continue_rebase) {
10204 		struct got_object_id *base_commit_id;
10205 
10206 		base_commit_id = got_worktree_get_base_commit_id(worktree);
10207 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
10208 		    base_commit_id, branch_head_commit_id, 1, repo,
10209 		    check_cancelled, NULL);
10210 		if (error)
10211 			goto done;
10212 		if (yca_id == NULL) {
10213 			error = got_error_msg(GOT_ERR_ANCESTRY,
10214 			    "specified branch shares no common ancestry "
10215 			    "with work tree's branch");
10216 			goto done;
10217 		}
10218 
10219 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
10220 		if (error) {
10221 			if (error->code != GOT_ERR_ANCESTRY)
10222 				goto done;
10223 			error = NULL;
10224 		} else {
10225 			struct got_pathlist_head paths;
10226 			printf("%s is already based on %s\n",
10227 			    got_ref_get_name(branch),
10228 			    got_worktree_get_head_ref_name(worktree));
10229 			error = switch_head_ref(branch, branch_head_commit_id,
10230 			    worktree, repo);
10231 			if (error)
10232 				goto done;
10233 			error = got_worktree_set_base_commit_id(worktree, repo,
10234 			    branch_head_commit_id);
10235 			if (error)
10236 				goto done;
10237 			TAILQ_INIT(&paths);
10238 			error = got_pathlist_append(&paths, "", NULL);
10239 			if (error)
10240 				goto done;
10241 			error = got_worktree_checkout_files(worktree,
10242 			    &paths, repo, update_progress, &upa,
10243 			    check_cancelled, NULL);
10244 			got_pathlist_free(&paths);
10245 			if (error)
10246 				goto done;
10247 			if (upa.did_something) {
10248 				char *id_str;
10249 				error = got_object_id_str(&id_str,
10250 				    branch_head_commit_id);
10251 				if (error)
10252 					goto done;
10253 				printf("Updated to %s: %s\n",
10254 				    got_worktree_get_head_ref_name(worktree),
10255 				    id_str);
10256 				free(id_str);
10257 			} else
10258 				printf("Already up-to-date\n");
10259 			print_update_progress_stats(&upa);
10260 			goto done;
10261 		}
10262 	}
10263 
10264 	commit_id = branch_head_commit_id;
10265 	error = got_object_open_as_commit(&commit, repo, commit_id);
10266 	if (error)
10267 		goto done;
10268 
10269 	parent_ids = got_object_commit_get_parent_ids(commit);
10270 	pid = STAILQ_FIRST(parent_ids);
10271 	if (pid == NULL) {
10272 		error = got_error(GOT_ERR_EMPTY_REBASE);
10273 		goto done;
10274 	}
10275 	error = collect_commits(&commits, commit_id, &pid->id,
10276 	    yca_id, got_worktree_get_path_prefix(worktree),
10277 	    GOT_ERR_REBASE_PATH, repo);
10278 	got_object_commit_close(commit);
10279 	commit = NULL;
10280 	if (error)
10281 		goto done;
10282 
10283 	if (!continue_rebase) {
10284 		error = got_worktree_rebase_prepare(&new_base_branch,
10285 		    &tmp_branch, &fileindex, worktree, branch, repo);
10286 		if (error)
10287 			goto done;
10288 	}
10289 
10290 	if (STAILQ_EMPTY(&commits)) {
10291 		if (continue_rebase) {
10292 			error = rebase_complete(worktree, fileindex,
10293 			    branch, new_base_branch, tmp_branch, repo,
10294 			    create_backup);
10295 			goto done;
10296 		} else {
10297 			/* Fast-forward the reference of the branch. */
10298 			struct got_object_id *new_head_commit_id;
10299 			char *id_str;
10300 			error = got_ref_resolve(&new_head_commit_id, repo,
10301 			    new_base_branch);
10302 			if (error)
10303 				goto done;
10304 			error = got_object_id_str(&id_str, new_head_commit_id);
10305 			printf("Forwarding %s to commit %s\n",
10306 			    got_ref_get_name(branch), id_str);
10307 			free(id_str);
10308 			error = got_ref_change_ref(branch,
10309 			    new_head_commit_id);
10310 			if (error)
10311 				goto done;
10312 			/* No backup needed since objects did not change. */
10313 			create_backup = 0;
10314 		}
10315 	}
10316 
10317 	pid = NULL;
10318 	STAILQ_FOREACH(qid, &commits, entry) {
10319 
10320 		commit_id = &qid->id;
10321 		parent_id = pid ? &pid->id : yca_id;
10322 		pid = qid;
10323 
10324 		memset(&upa, 0, sizeof(upa));
10325 		error = got_worktree_rebase_merge_files(&merged_paths,
10326 		    worktree, fileindex, parent_id, commit_id, repo,
10327 		    update_progress, &upa, check_cancelled, NULL);
10328 		if (error)
10329 			goto done;
10330 
10331 		print_merge_progress_stats(&upa);
10332 		if (upa.conflicts > 0 || upa.missing > 0 ||
10333 		    upa.not_deleted > 0 || upa.unversioned > 0) {
10334 			if (upa.conflicts > 0) {
10335 				error = show_rebase_merge_conflict(&qid->id,
10336 				    repo);
10337 				if (error)
10338 					goto done;
10339 			}
10340 			got_worktree_rebase_pathlist_free(&merged_paths);
10341 			break;
10342 		}
10343 
10344 		error = rebase_commit(&merged_paths, worktree, fileindex,
10345 		    tmp_branch, commit_id, repo);
10346 		got_worktree_rebase_pathlist_free(&merged_paths);
10347 		if (error)
10348 			goto done;
10349 	}
10350 
10351 	if (upa.conflicts > 0 || upa.missing > 0 ||
10352 	    upa.not_deleted > 0 || upa.unversioned > 0) {
10353 		error = got_worktree_rebase_postpone(worktree, fileindex);
10354 		if (error)
10355 			goto done;
10356 		if (upa.conflicts > 0 && upa.missing == 0 &&
10357 		    upa.not_deleted == 0 && upa.unversioned == 0) {
10358 			error = got_error_msg(GOT_ERR_CONFLICTS,
10359 			    "conflicts must be resolved before rebasing "
10360 			    "can continue");
10361 		} else if (upa.conflicts > 0) {
10362 			error = got_error_msg(GOT_ERR_CONFLICTS,
10363 			    "conflicts must be resolved before rebasing "
10364 			    "can continue; changes destined for some "
10365 			    "files were not yet merged and should be "
10366 			    "merged manually if required before the "
10367 			    "rebase operation is continued");
10368 		} else {
10369 			error = got_error_msg(GOT_ERR_CONFLICTS,
10370 			    "changes destined for some files were not "
10371 			    "yet merged and should be merged manually "
10372 			    "if required before the rebase operation "
10373 			    "is continued");
10374 		}
10375 	} else
10376 		error = rebase_complete(worktree, fileindex, branch,
10377 		    new_base_branch, tmp_branch, repo, create_backup);
10378 done:
10379 	got_object_id_queue_free(&commits);
10380 	free(branch_head_commit_id);
10381 	free(resume_commit_id);
10382 	free(yca_id);
10383 	if (commit)
10384 		got_object_commit_close(commit);
10385 	if (branch)
10386 		got_ref_close(branch);
10387 	if (new_base_branch)
10388 		got_ref_close(new_base_branch);
10389 	if (tmp_branch)
10390 		got_ref_close(tmp_branch);
10391 	if (worktree)
10392 		got_worktree_close(worktree);
10393 	if (repo) {
10394 		const struct got_error *close_err = got_repo_close(repo);
10395 		if (error == NULL)
10396 			error = close_err;
10397 	}
10398 	if (pack_fds) {
10399 		const struct got_error *pack_err =
10400 		    got_repo_pack_fds_close(pack_fds);
10401 		if (error == NULL)
10402 			error = pack_err;
10403 	}
10404 	return error;
10405 }
10406 
10407 __dead static void
10408 usage_histedit(void)
10409 {
10410 	fprintf(stderr, "usage: %s histedit [-a] [-c] [-e] [-f] "
10411 	    "[-F histedit-script] [-m] [-l] [-X] [branch]\n",
10412 	    getprogname());
10413 	exit(1);
10414 }
10415 
10416 #define GOT_HISTEDIT_PICK 'p'
10417 #define GOT_HISTEDIT_EDIT 'e'
10418 #define GOT_HISTEDIT_FOLD 'f'
10419 #define GOT_HISTEDIT_DROP 'd'
10420 #define GOT_HISTEDIT_MESG 'm'
10421 
10422 static const struct got_histedit_cmd {
10423 	unsigned char code;
10424 	const char *name;
10425 	const char *desc;
10426 } got_histedit_cmds[] = {
10427 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
10428 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
10429 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
10430 	    "be used" },
10431 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
10432 	{ GOT_HISTEDIT_MESG, "mesg",
10433 	    "single-line log message for commit above (open editor if empty)" },
10434 };
10435 
10436 struct got_histedit_list_entry {
10437 	TAILQ_ENTRY(got_histedit_list_entry) entry;
10438 	struct got_object_id *commit_id;
10439 	const struct got_histedit_cmd *cmd;
10440 	char *logmsg;
10441 };
10442 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
10443 
10444 static const struct got_error *
10445 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
10446     FILE *f, struct got_repository *repo)
10447 {
10448 	const struct got_error *err = NULL;
10449 	char *logmsg = NULL, *id_str = NULL;
10450 	struct got_commit_object *commit = NULL;
10451 	int n;
10452 
10453 	err = got_object_open_as_commit(&commit, repo, commit_id);
10454 	if (err)
10455 		goto done;
10456 
10457 	err = get_short_logmsg(&logmsg, 34, commit);
10458 	if (err)
10459 		goto done;
10460 
10461 	err = got_object_id_str(&id_str, commit_id);
10462 	if (err)
10463 		goto done;
10464 
10465 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
10466 	if (n < 0)
10467 		err = got_ferror(f, GOT_ERR_IO);
10468 done:
10469 	if (commit)
10470 		got_object_commit_close(commit);
10471 	free(id_str);
10472 	free(logmsg);
10473 	return err;
10474 }
10475 
10476 static const struct got_error *
10477 histedit_write_commit_list(struct got_object_id_queue *commits,
10478     FILE *f, int edit_logmsg_only, int fold_only, int edit_only,
10479     struct got_repository *repo)
10480 {
10481 	const struct got_error *err = NULL;
10482 	struct got_object_qid *qid;
10483 	const char *histedit_cmd = NULL;
10484 
10485 	if (STAILQ_EMPTY(commits))
10486 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
10487 
10488 	STAILQ_FOREACH(qid, commits, entry) {
10489 		histedit_cmd = got_histedit_cmds[0].name;
10490 		if (edit_only)
10491 			histedit_cmd = "edit";
10492 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
10493 			histedit_cmd = "fold";
10494 		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
10495 		if (err)
10496 			break;
10497 		if (edit_logmsg_only) {
10498 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
10499 			if (n < 0) {
10500 				err = got_ferror(f, GOT_ERR_IO);
10501 				break;
10502 			}
10503 		}
10504 	}
10505 
10506 	return err;
10507 }
10508 
10509 static const struct got_error *
10510 write_cmd_list(FILE *f, const char *branch_name,
10511     struct got_object_id_queue *commits)
10512 {
10513 	const struct got_error *err = NULL;
10514 	size_t i;
10515 	int n;
10516 	char *id_str;
10517 	struct got_object_qid *qid;
10518 
10519 	qid = STAILQ_FIRST(commits);
10520 	err = got_object_id_str(&id_str, &qid->id);
10521 	if (err)
10522 		return err;
10523 
10524 	n = fprintf(f,
10525 	    "# Editing the history of branch '%s' starting at\n"
10526 	    "# commit %s\n"
10527 	    "# Commits will be processed in order from top to "
10528 	    "bottom of this file.\n", branch_name, id_str);
10529 	if (n < 0) {
10530 		err = got_ferror(f, GOT_ERR_IO);
10531 		goto done;
10532 	}
10533 
10534 	n = fprintf(f, "# Available histedit commands:\n");
10535 	if (n < 0) {
10536 		err = got_ferror(f, GOT_ERR_IO);
10537 		goto done;
10538 	}
10539 
10540 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
10541 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
10542 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
10543 		    cmd->desc);
10544 		if (n < 0) {
10545 			err = got_ferror(f, GOT_ERR_IO);
10546 			break;
10547 		}
10548 	}
10549 done:
10550 	free(id_str);
10551 	return err;
10552 }
10553 
10554 static const struct got_error *
10555 histedit_syntax_error(int lineno)
10556 {
10557 	static char msg[42];
10558 	int ret;
10559 
10560 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
10561 	    lineno);
10562 	if (ret == -1 || ret >= sizeof(msg))
10563 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
10564 
10565 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
10566 }
10567 
10568 static const struct got_error *
10569 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
10570     char *logmsg, struct got_repository *repo)
10571 {
10572 	const struct got_error *err;
10573 	struct got_commit_object *folded_commit = NULL;
10574 	char *id_str, *folded_logmsg = NULL;
10575 
10576 	err = got_object_id_str(&id_str, hle->commit_id);
10577 	if (err)
10578 		return err;
10579 
10580 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
10581 	if (err)
10582 		goto done;
10583 
10584 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
10585 	if (err)
10586 		goto done;
10587 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
10588 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
10589 	    folded_logmsg) == -1) {
10590 		err = got_error_from_errno("asprintf");
10591 	}
10592 done:
10593 	if (folded_commit)
10594 		got_object_commit_close(folded_commit);
10595 	free(id_str);
10596 	free(folded_logmsg);
10597 	return err;
10598 }
10599 
10600 static struct got_histedit_list_entry *
10601 get_folded_commits(struct got_histedit_list_entry *hle)
10602 {
10603 	struct got_histedit_list_entry *prev, *folded = NULL;
10604 
10605 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
10606 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
10607 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
10608 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
10609 			folded = prev;
10610 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
10611 	}
10612 
10613 	return folded;
10614 }
10615 
10616 static const struct got_error *
10617 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
10618     struct got_repository *repo)
10619 {
10620 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
10621 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
10622 	const struct got_error *err = NULL;
10623 	struct got_commit_object *commit = NULL;
10624 	int logmsg_len;
10625 	int fd;
10626 	struct got_histedit_list_entry *folded = NULL;
10627 
10628 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
10629 	if (err)
10630 		return err;
10631 
10632 	folded = get_folded_commits(hle);
10633 	if (folded) {
10634 		while (folded != hle) {
10635 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
10636 				folded = TAILQ_NEXT(folded, entry);
10637 				continue;
10638 			}
10639 			err = append_folded_commit_msg(&new_msg, folded,
10640 			    logmsg, repo);
10641 			if (err)
10642 				goto done;
10643 			free(logmsg);
10644 			logmsg = new_msg;
10645 			folded = TAILQ_NEXT(folded, entry);
10646 		}
10647 	}
10648 
10649 	err = got_object_id_str(&id_str, hle->commit_id);
10650 	if (err)
10651 		goto done;
10652 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
10653 	if (err)
10654 		goto done;
10655 	logmsg_len = asprintf(&new_msg,
10656 	    "%s\n# original log message of commit %s: %s",
10657 	    logmsg ? logmsg : "", id_str, orig_logmsg);
10658 	if (logmsg_len == -1) {
10659 		err = got_error_from_errno("asprintf");
10660 		goto done;
10661 	}
10662 	free(logmsg);
10663 	logmsg = new_msg;
10664 
10665 	err = got_object_id_str(&id_str, hle->commit_id);
10666 	if (err)
10667 		goto done;
10668 
10669 	err = got_opentemp_named_fd(&logmsg_path, &fd,
10670 	    GOT_TMPDIR_STR "/got-logmsg");
10671 	if (err)
10672 		goto done;
10673 
10674 	write(fd, logmsg, logmsg_len);
10675 	close(fd);
10676 
10677 	err = get_editor(&editor);
10678 	if (err)
10679 		goto done;
10680 
10681 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
10682 	    logmsg_len, 0);
10683 	if (err) {
10684 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
10685 			goto done;
10686 		err = NULL;
10687 		hle->logmsg = strdup(new_msg);
10688 		if (hle->logmsg == NULL)
10689 			err = got_error_from_errno("strdup");
10690 	}
10691 done:
10692 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
10693 		err = got_error_from_errno2("unlink", logmsg_path);
10694 	free(logmsg_path);
10695 	free(logmsg);
10696 	free(orig_logmsg);
10697 	free(editor);
10698 	if (commit)
10699 		got_object_commit_close(commit);
10700 	return err;
10701 }
10702 
10703 static const struct got_error *
10704 histedit_parse_list(struct got_histedit_list *histedit_cmds,
10705     FILE *f, struct got_repository *repo)
10706 {
10707 	const struct got_error *err = NULL;
10708 	char *line = NULL, *p, *end;
10709 	size_t i, size;
10710 	ssize_t len;
10711 	int lineno = 0;
10712 	const struct got_histedit_cmd *cmd;
10713 	struct got_object_id *commit_id = NULL;
10714 	struct got_histedit_list_entry *hle = NULL;
10715 
10716 	for (;;) {
10717 		len = getline(&line, &size, f);
10718 		if (len == -1) {
10719 			const struct got_error *getline_err;
10720 			if (feof(f))
10721 				break;
10722 			getline_err = got_error_from_errno("getline");
10723 			err = got_ferror(f, getline_err->code);
10724 			break;
10725 		}
10726 		lineno++;
10727 		p = line;
10728 		while (isspace((unsigned char)p[0]))
10729 			p++;
10730 		if (p[0] == '#' || p[0] == '\0') {
10731 			free(line);
10732 			line = NULL;
10733 			continue;
10734 		}
10735 		cmd = NULL;
10736 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
10737 			cmd = &got_histedit_cmds[i];
10738 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
10739 			    isspace((unsigned char)p[strlen(cmd->name)])) {
10740 				p += strlen(cmd->name);
10741 				break;
10742 			}
10743 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
10744 				p++;
10745 				break;
10746 			}
10747 		}
10748 		if (i == nitems(got_histedit_cmds)) {
10749 			err = histedit_syntax_error(lineno);
10750 			break;
10751 		}
10752 		while (isspace((unsigned char)p[0]))
10753 			p++;
10754 		if (cmd->code == GOT_HISTEDIT_MESG) {
10755 			if (hle == NULL || hle->logmsg != NULL) {
10756 				err = got_error(GOT_ERR_HISTEDIT_CMD);
10757 				break;
10758 			}
10759 			if (p[0] == '\0') {
10760 				err = histedit_edit_logmsg(hle, repo);
10761 				if (err)
10762 					break;
10763 			} else {
10764 				hle->logmsg = strdup(p);
10765 				if (hle->logmsg == NULL) {
10766 					err = got_error_from_errno("strdup");
10767 					break;
10768 				}
10769 			}
10770 			free(line);
10771 			line = NULL;
10772 			continue;
10773 		} else {
10774 			end = p;
10775 			while (end[0] && !isspace((unsigned char)end[0]))
10776 				end++;
10777 			*end = '\0';
10778 
10779 			err = got_object_resolve_id_str(&commit_id, repo, p);
10780 			if (err) {
10781 				/* override error code */
10782 				err = histedit_syntax_error(lineno);
10783 				break;
10784 			}
10785 		}
10786 		hle = malloc(sizeof(*hle));
10787 		if (hle == NULL) {
10788 			err = got_error_from_errno("malloc");
10789 			break;
10790 		}
10791 		hle->cmd = cmd;
10792 		hle->commit_id = commit_id;
10793 		hle->logmsg = NULL;
10794 		commit_id = NULL;
10795 		free(line);
10796 		line = NULL;
10797 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
10798 	}
10799 
10800 	free(line);
10801 	free(commit_id);
10802 	return err;
10803 }
10804 
10805 static const struct got_error *
10806 histedit_check_script(struct got_histedit_list *histedit_cmds,
10807     struct got_object_id_queue *commits, struct got_repository *repo)
10808 {
10809 	const struct got_error *err = NULL;
10810 	struct got_object_qid *qid;
10811 	struct got_histedit_list_entry *hle;
10812 	static char msg[92];
10813 	char *id_str;
10814 
10815 	if (TAILQ_EMPTY(histedit_cmds))
10816 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
10817 		    "histedit script contains no commands");
10818 	if (STAILQ_EMPTY(commits))
10819 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
10820 
10821 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
10822 		struct got_histedit_list_entry *hle2;
10823 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
10824 			if (hle == hle2)
10825 				continue;
10826 			if (got_object_id_cmp(hle->commit_id,
10827 			    hle2->commit_id) != 0)
10828 				continue;
10829 			err = got_object_id_str(&id_str, hle->commit_id);
10830 			if (err)
10831 				return err;
10832 			snprintf(msg, sizeof(msg), "commit %s is listed "
10833 			    "more than once in histedit script", id_str);
10834 			free(id_str);
10835 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
10836 		}
10837 	}
10838 
10839 	STAILQ_FOREACH(qid, commits, entry) {
10840 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
10841 			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
10842 				break;
10843 		}
10844 		if (hle == NULL) {
10845 			err = got_object_id_str(&id_str, &qid->id);
10846 			if (err)
10847 				return err;
10848 			snprintf(msg, sizeof(msg),
10849 			    "commit %s missing from histedit script", id_str);
10850 			free(id_str);
10851 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
10852 		}
10853 	}
10854 
10855 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
10856 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
10857 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
10858 		    "last commit in histedit script cannot be folded");
10859 
10860 	return NULL;
10861 }
10862 
10863 static const struct got_error *
10864 histedit_run_editor(struct got_histedit_list *histedit_cmds,
10865     const char *path, struct got_object_id_queue *commits,
10866     struct got_repository *repo)
10867 {
10868 	const struct got_error *err = NULL;
10869 	char *editor;
10870 	FILE *f = NULL;
10871 
10872 	err = get_editor(&editor);
10873 	if (err)
10874 		return err;
10875 
10876 	if (spawn_editor(editor, path) == -1) {
10877 		err = got_error_from_errno("failed spawning editor");
10878 		goto done;
10879 	}
10880 
10881 	f = fopen(path, "re");
10882 	if (f == NULL) {
10883 		err = got_error_from_errno("fopen");
10884 		goto done;
10885 	}
10886 	err = histedit_parse_list(histedit_cmds, f, repo);
10887 	if (err)
10888 		goto done;
10889 
10890 	err = histedit_check_script(histedit_cmds, commits, repo);
10891 done:
10892 	if (f && fclose(f) == EOF && err == NULL)
10893 		err = got_error_from_errno("fclose");
10894 	free(editor);
10895 	return err;
10896 }
10897 
10898 static const struct got_error *
10899 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
10900     struct got_object_id_queue *, const char *, const char *,
10901     struct got_repository *);
10902 
10903 static const struct got_error *
10904 histedit_edit_script(struct got_histedit_list *histedit_cmds,
10905     struct got_object_id_queue *commits, const char *branch_name,
10906     int edit_logmsg_only, int fold_only, int edit_only,
10907     struct got_repository *repo)
10908 {
10909 	const struct got_error *err;
10910 	FILE *f = NULL;
10911 	char *path = NULL;
10912 
10913 	err = got_opentemp_named(&path, &f, "got-histedit");
10914 	if (err)
10915 		return err;
10916 
10917 	err = write_cmd_list(f, branch_name, commits);
10918 	if (err)
10919 		goto done;
10920 
10921 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
10922 	    fold_only, edit_only, repo);
10923 	if (err)
10924 		goto done;
10925 
10926 	if (edit_logmsg_only || fold_only || edit_only) {
10927 		rewind(f);
10928 		err = histedit_parse_list(histedit_cmds, f, repo);
10929 	} else {
10930 		if (fclose(f) == EOF) {
10931 			err = got_error_from_errno("fclose");
10932 			goto done;
10933 		}
10934 		f = NULL;
10935 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
10936 		if (err) {
10937 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
10938 			    err->code != GOT_ERR_HISTEDIT_CMD)
10939 				goto done;
10940 			err = histedit_edit_list_retry(histedit_cmds, err,
10941 			    commits, path, branch_name, repo);
10942 		}
10943 	}
10944 done:
10945 	if (f && fclose(f) == EOF && err == NULL)
10946 		err = got_error_from_errno("fclose");
10947 	if (path && unlink(path) != 0 && err == NULL)
10948 		err = got_error_from_errno2("unlink", path);
10949 	free(path);
10950 	return err;
10951 }
10952 
10953 static const struct got_error *
10954 histedit_save_list(struct got_histedit_list *histedit_cmds,
10955     struct got_worktree *worktree, struct got_repository *repo)
10956 {
10957 	const struct got_error *err = NULL;
10958 	char *path = NULL;
10959 	FILE *f = NULL;
10960 	struct got_histedit_list_entry *hle;
10961 	struct got_commit_object *commit = NULL;
10962 
10963 	err = got_worktree_get_histedit_script_path(&path, worktree);
10964 	if (err)
10965 		return err;
10966 
10967 	f = fopen(path, "we");
10968 	if (f == NULL) {
10969 		err = got_error_from_errno2("fopen", path);
10970 		goto done;
10971 	}
10972 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
10973 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
10974 		    repo);
10975 		if (err)
10976 			break;
10977 
10978 		if (hle->logmsg) {
10979 			int n = fprintf(f, "%c %s\n",
10980 			    GOT_HISTEDIT_MESG, hle->logmsg);
10981 			if (n < 0) {
10982 				err = got_ferror(f, GOT_ERR_IO);
10983 				break;
10984 			}
10985 		}
10986 	}
10987 done:
10988 	if (f && fclose(f) == EOF && err == NULL)
10989 		err = got_error_from_errno("fclose");
10990 	free(path);
10991 	if (commit)
10992 		got_object_commit_close(commit);
10993 	return err;
10994 }
10995 
10996 static void
10997 histedit_free_list(struct got_histedit_list *histedit_cmds)
10998 {
10999 	struct got_histedit_list_entry *hle;
11000 
11001 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
11002 		TAILQ_REMOVE(histedit_cmds, hle, entry);
11003 		free(hle);
11004 	}
11005 }
11006 
11007 static const struct got_error *
11008 histedit_load_list(struct got_histedit_list *histedit_cmds,
11009     const char *path, struct got_repository *repo)
11010 {
11011 	const struct got_error *err = NULL;
11012 	FILE *f = NULL;
11013 
11014 	f = fopen(path, "re");
11015 	if (f == NULL) {
11016 		err = got_error_from_errno2("fopen", path);
11017 		goto done;
11018 	}
11019 
11020 	err = histedit_parse_list(histedit_cmds, f, repo);
11021 done:
11022 	if (f && fclose(f) == EOF && err == NULL)
11023 		err = got_error_from_errno("fclose");
11024 	return err;
11025 }
11026 
11027 static const struct got_error *
11028 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
11029     const struct got_error *edit_err, struct got_object_id_queue *commits,
11030     const char *path, const char *branch_name, struct got_repository *repo)
11031 {
11032 	const struct got_error *err = NULL, *prev_err = edit_err;
11033 	int resp = ' ';
11034 
11035 	while (resp != 'c' && resp != 'r' && resp != 'a') {
11036 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
11037 		    "or (a)bort: ", getprogname(), prev_err->msg);
11038 		resp = getchar();
11039 		if (resp == '\n')
11040 			resp = getchar();
11041 		if (resp == 'c') {
11042 			histedit_free_list(histedit_cmds);
11043 			err = histedit_run_editor(histedit_cmds, path, commits,
11044 			    repo);
11045 			if (err) {
11046 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
11047 				    err->code != GOT_ERR_HISTEDIT_CMD)
11048 					break;
11049 				prev_err = err;
11050 				resp = ' ';
11051 				continue;
11052 			}
11053 			break;
11054 		} else if (resp == 'r') {
11055 			histedit_free_list(histedit_cmds);
11056 			err = histedit_edit_script(histedit_cmds,
11057 			    commits, branch_name, 0, 0, 0, repo);
11058 			if (err) {
11059 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
11060 				    err->code != GOT_ERR_HISTEDIT_CMD)
11061 					break;
11062 				prev_err = err;
11063 				resp = ' ';
11064 				continue;
11065 			}
11066 			break;
11067 		} else if (resp == 'a') {
11068 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
11069 			break;
11070 		} else
11071 			printf("invalid response '%c'\n", resp);
11072 	}
11073 
11074 	return err;
11075 }
11076 
11077 static const struct got_error *
11078 histedit_complete(struct got_worktree *worktree,
11079     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
11080     struct got_reference *branch, struct got_repository *repo)
11081 {
11082 	printf("Switching work tree to %s\n",
11083 	    got_ref_get_symref_target(branch));
11084 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
11085 	    branch, repo);
11086 }
11087 
11088 static const struct got_error *
11089 show_histedit_progress(struct got_commit_object *commit,
11090     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
11091 {
11092 	const struct got_error *err;
11093 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
11094 
11095 	err = got_object_id_str(&old_id_str, hle->commit_id);
11096 	if (err)
11097 		goto done;
11098 
11099 	if (new_id) {
11100 		err = got_object_id_str(&new_id_str, new_id);
11101 		if (err)
11102 			goto done;
11103 	}
11104 
11105 	old_id_str[12] = '\0';
11106 	if (new_id_str)
11107 		new_id_str[12] = '\0';
11108 
11109 	if (hle->logmsg) {
11110 		logmsg = strdup(hle->logmsg);
11111 		if (logmsg == NULL) {
11112 			err = got_error_from_errno("strdup");
11113 			goto done;
11114 		}
11115 		trim_logmsg(logmsg, 42);
11116 	} else {
11117 		err = get_short_logmsg(&logmsg, 42, commit);
11118 		if (err)
11119 			goto done;
11120 	}
11121 
11122 	switch (hle->cmd->code) {
11123 	case GOT_HISTEDIT_PICK:
11124 	case GOT_HISTEDIT_EDIT:
11125 		printf("%s -> %s: %s\n", old_id_str,
11126 		    new_id_str ? new_id_str : "no-op change", logmsg);
11127 		break;
11128 	case GOT_HISTEDIT_DROP:
11129 	case GOT_HISTEDIT_FOLD:
11130 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
11131 		    logmsg);
11132 		break;
11133 	default:
11134 		break;
11135 	}
11136 done:
11137 	free(old_id_str);
11138 	free(new_id_str);
11139 	return err;
11140 }
11141 
11142 static const struct got_error *
11143 histedit_commit(struct got_pathlist_head *merged_paths,
11144     struct got_worktree *worktree, struct got_fileindex *fileindex,
11145     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
11146     struct got_repository *repo)
11147 {
11148 	const struct got_error *err;
11149 	struct got_commit_object *commit;
11150 	struct got_object_id *new_commit_id;
11151 
11152 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
11153 	    && hle->logmsg == NULL) {
11154 		err = histedit_edit_logmsg(hle, repo);
11155 		if (err)
11156 			return err;
11157 	}
11158 
11159 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
11160 	if (err)
11161 		return err;
11162 
11163 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
11164 	    worktree, fileindex, tmp_branch, commit, hle->commit_id,
11165 	    hle->logmsg, repo);
11166 	if (err) {
11167 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
11168 			goto done;
11169 		err = show_histedit_progress(commit, hle, NULL);
11170 	} else {
11171 		err = show_histedit_progress(commit, hle, new_commit_id);
11172 		free(new_commit_id);
11173 	}
11174 done:
11175 	got_object_commit_close(commit);
11176 	return err;
11177 }
11178 
11179 static const struct got_error *
11180 histedit_skip_commit(struct got_histedit_list_entry *hle,
11181     struct got_worktree *worktree, struct got_repository *repo)
11182 {
11183 	const struct got_error *error;
11184 	struct got_commit_object *commit;
11185 
11186 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
11187 	    repo);
11188 	if (error)
11189 		return error;
11190 
11191 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
11192 	if (error)
11193 		return error;
11194 
11195 	error = show_histedit_progress(commit, hle, NULL);
11196 	got_object_commit_close(commit);
11197 	return error;
11198 }
11199 
11200 static const struct got_error *
11201 check_local_changes(void *arg, unsigned char status,
11202     unsigned char staged_status, const char *path,
11203     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
11204     struct got_object_id *commit_id, int dirfd, const char *de_name)
11205 {
11206 	int *have_local_changes = arg;
11207 
11208 	switch (status) {
11209 	case GOT_STATUS_ADD:
11210 	case GOT_STATUS_DELETE:
11211 	case GOT_STATUS_MODIFY:
11212 	case GOT_STATUS_CONFLICT:
11213 		*have_local_changes = 1;
11214 		return got_error(GOT_ERR_CANCELLED);
11215 	default:
11216 		break;
11217 	}
11218 
11219 	switch (staged_status) {
11220 	case GOT_STATUS_ADD:
11221 	case GOT_STATUS_DELETE:
11222 	case GOT_STATUS_MODIFY:
11223 		*have_local_changes = 1;
11224 		return got_error(GOT_ERR_CANCELLED);
11225 	default:
11226 		break;
11227 	}
11228 
11229 	return NULL;
11230 }
11231 
11232 static const struct got_error *
11233 cmd_histedit(int argc, char *argv[])
11234 {
11235 	const struct got_error *error = NULL;
11236 	struct got_worktree *worktree = NULL;
11237 	struct got_fileindex *fileindex = NULL;
11238 	struct got_repository *repo = NULL;
11239 	char *cwd = NULL;
11240 	struct got_reference *branch = NULL;
11241 	struct got_reference *tmp_branch = NULL;
11242 	struct got_object_id *resume_commit_id = NULL;
11243 	struct got_object_id *base_commit_id = NULL;
11244 	struct got_object_id *head_commit_id = NULL;
11245 	struct got_commit_object *commit = NULL;
11246 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
11247 	struct got_update_progress_arg upa;
11248 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
11249 	int edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
11250 	int list_backups = 0, delete_backups = 0;
11251 	const char *edit_script_path = NULL;
11252 	struct got_object_id_queue commits;
11253 	struct got_pathlist_head merged_paths;
11254 	const struct got_object_id_queue *parent_ids;
11255 	struct got_object_qid *pid;
11256 	struct got_histedit_list histedit_cmds;
11257 	struct got_histedit_list_entry *hle;
11258 	int *pack_fds = NULL;
11259 
11260 	STAILQ_INIT(&commits);
11261 	TAILQ_INIT(&histedit_cmds);
11262 	TAILQ_INIT(&merged_paths);
11263 	memset(&upa, 0, sizeof(upa));
11264 
11265 	while ((ch = getopt(argc, argv, "acefF:mlX")) != -1) {
11266 		switch (ch) {
11267 		case 'a':
11268 			abort_edit = 1;
11269 			break;
11270 		case 'c':
11271 			continue_edit = 1;
11272 			break;
11273 		case 'e':
11274 			edit_only = 1;
11275 			break;
11276 		case 'f':
11277 			fold_only = 1;
11278 			break;
11279 		case 'F':
11280 			edit_script_path = optarg;
11281 			break;
11282 		case 'm':
11283 			edit_logmsg_only = 1;
11284 			break;
11285 		case 'l':
11286 			list_backups = 1;
11287 			break;
11288 		case 'X':
11289 			delete_backups = 1;
11290 			break;
11291 		default:
11292 			usage_histedit();
11293 			/* NOTREACHED */
11294 		}
11295 	}
11296 
11297 	argc -= optind;
11298 	argv += optind;
11299 
11300 #ifndef PROFILE
11301 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11302 	    "unveil", NULL) == -1)
11303 		err(1, "pledge");
11304 #endif
11305 	if (abort_edit && continue_edit)
11306 		option_conflict('a', 'c');
11307 	if (edit_script_path && edit_logmsg_only)
11308 		option_conflict('F', 'm');
11309 	if (abort_edit && edit_logmsg_only)
11310 		option_conflict('a', 'm');
11311 	if (continue_edit && edit_logmsg_only)
11312 		option_conflict('c', 'm');
11313 	if (abort_edit && fold_only)
11314 		option_conflict('a', 'f');
11315 	if (continue_edit && fold_only)
11316 		option_conflict('c', 'f');
11317 	if (fold_only && edit_logmsg_only)
11318 		option_conflict('f', 'm');
11319 	if (edit_script_path && fold_only)
11320 		option_conflict('F', 'f');
11321 	if (abort_edit && edit_only)
11322 		option_conflict('a', 'e');
11323 	if (continue_edit && edit_only)
11324 		option_conflict('c', 'e');
11325 	if (edit_only && edit_logmsg_only)
11326 		option_conflict('e', 'm');
11327 	if (edit_script_path && edit_only)
11328 		option_conflict('F', 'e');
11329 	if (list_backups) {
11330 		if (abort_edit)
11331 			option_conflict('l', 'a');
11332 		if (continue_edit)
11333 			option_conflict('l', 'c');
11334 		if (edit_script_path)
11335 			option_conflict('l', 'F');
11336 		if (edit_logmsg_only)
11337 			option_conflict('l', 'm');
11338 		if (fold_only)
11339 			option_conflict('l', 'f');
11340 		if (edit_only)
11341 			option_conflict('l', 'e');
11342 		if (delete_backups)
11343 			option_conflict('l', 'X');
11344 		if (argc != 0 && argc != 1)
11345 			usage_histedit();
11346 	} else if (delete_backups) {
11347 		if (abort_edit)
11348 			option_conflict('X', 'a');
11349 		if (continue_edit)
11350 			option_conflict('X', 'c');
11351 		if (edit_script_path)
11352 			option_conflict('X', 'F');
11353 		if (edit_logmsg_only)
11354 			option_conflict('X', 'm');
11355 		if (fold_only)
11356 			option_conflict('X', 'f');
11357 		if (edit_only)
11358 			option_conflict('X', 'e');
11359 		if (list_backups)
11360 			option_conflict('X', 'l');
11361 		if (argc != 0 && argc != 1)
11362 			usage_histedit();
11363 	} else if (argc != 0)
11364 		usage_histedit();
11365 
11366 	/*
11367 	 * This command cannot apply unveil(2) in all cases because the
11368 	 * user may choose to run an editor to edit the histedit script
11369 	 * and to edit individual commit log messages.
11370 	 * unveil(2) traverses exec(2); if an editor is used we have to
11371 	 * apply unveil after edit script and log messages have been written.
11372 	 * XXX TODO: Make use of unveil(2) where possible.
11373 	 */
11374 
11375 	cwd = getcwd(NULL, 0);
11376 	if (cwd == NULL) {
11377 		error = got_error_from_errno("getcwd");
11378 		goto done;
11379 	}
11380 
11381 	error = got_repo_pack_fds_open(&pack_fds);
11382 	if (error != NULL)
11383 		goto done;
11384 
11385 	error = got_worktree_open(&worktree, cwd);
11386 	if (error) {
11387 		if (list_backups || delete_backups) {
11388 			if (error->code != GOT_ERR_NOT_WORKTREE)
11389 				goto done;
11390 		} else {
11391 			if (error->code == GOT_ERR_NOT_WORKTREE)
11392 				error = wrap_not_worktree_error(error,
11393 				    "histedit", cwd);
11394 			goto done;
11395 		}
11396 	}
11397 
11398 	if (list_backups || delete_backups) {
11399 		error = got_repo_open(&repo,
11400 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
11401 		    NULL, pack_fds);
11402 		if (error != NULL)
11403 			goto done;
11404 		error = apply_unveil(got_repo_get_path(repo), 0,
11405 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
11406 		if (error)
11407 			goto done;
11408 		error = process_backup_refs(
11409 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
11410 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
11411 		goto done; /* nothing else to do */
11412 	}
11413 
11414 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11415 	    NULL, pack_fds);
11416 	if (error != NULL)
11417 		goto done;
11418 
11419 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
11420 	if (error)
11421 		goto done;
11422 	if (rebase_in_progress) {
11423 		error = got_error(GOT_ERR_REBASING);
11424 		goto done;
11425 	}
11426 
11427 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
11428 	    repo);
11429 	if (error)
11430 		goto done;
11431 	if (merge_in_progress) {
11432 		error = got_error(GOT_ERR_MERGE_BUSY);
11433 		goto done;
11434 	}
11435 
11436 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
11437 	if (error)
11438 		goto done;
11439 
11440 	if (edit_in_progress && edit_logmsg_only) {
11441 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11442 		    "histedit operation is in progress in this "
11443 		    "work tree and must be continued or aborted "
11444 		    "before the -m option can be used");
11445 		goto done;
11446 	}
11447 	if (edit_in_progress && fold_only) {
11448 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11449 		    "histedit operation is in progress in this "
11450 		    "work tree and must be continued or aborted "
11451 		    "before the -f option can be used");
11452 		goto done;
11453 	}
11454 	if (edit_in_progress && edit_only) {
11455 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11456 		    "histedit operation is in progress in this "
11457 		    "work tree and must be continued or aborted "
11458 		    "before the -e option can be used");
11459 		goto done;
11460 	}
11461 
11462 	if (edit_in_progress && abort_edit) {
11463 		error = got_worktree_histedit_continue(&resume_commit_id,
11464 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
11465 		    worktree, repo);
11466 		if (error)
11467 			goto done;
11468 		printf("Switching work tree to %s\n",
11469 		    got_ref_get_symref_target(branch));
11470 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
11471 		    branch, base_commit_id, abort_progress, &upa);
11472 		if (error)
11473 			goto done;
11474 		printf("Histedit of %s aborted\n",
11475 		    got_ref_get_symref_target(branch));
11476 		print_merge_progress_stats(&upa);
11477 		goto done; /* nothing else to do */
11478 	} else if (abort_edit) {
11479 		error = got_error(GOT_ERR_NOT_HISTEDIT);
11480 		goto done;
11481 	}
11482 
11483 	if (continue_edit) {
11484 		char *path;
11485 
11486 		if (!edit_in_progress) {
11487 			error = got_error(GOT_ERR_NOT_HISTEDIT);
11488 			goto done;
11489 		}
11490 
11491 		error = got_worktree_get_histedit_script_path(&path, worktree);
11492 		if (error)
11493 			goto done;
11494 
11495 		error = histedit_load_list(&histedit_cmds, path, repo);
11496 		free(path);
11497 		if (error)
11498 			goto done;
11499 
11500 		error = got_worktree_histedit_continue(&resume_commit_id,
11501 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
11502 		    worktree, repo);
11503 		if (error)
11504 			goto done;
11505 
11506 		error = got_ref_resolve(&head_commit_id, repo, branch);
11507 		if (error)
11508 			goto done;
11509 
11510 		error = got_object_open_as_commit(&commit, repo,
11511 		    head_commit_id);
11512 		if (error)
11513 			goto done;
11514 		parent_ids = got_object_commit_get_parent_ids(commit);
11515 		pid = STAILQ_FIRST(parent_ids);
11516 		if (pid == NULL) {
11517 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11518 			goto done;
11519 		}
11520 		error = collect_commits(&commits, head_commit_id, &pid->id,
11521 		    base_commit_id, got_worktree_get_path_prefix(worktree),
11522 		    GOT_ERR_HISTEDIT_PATH, repo);
11523 		got_object_commit_close(commit);
11524 		commit = NULL;
11525 		if (error)
11526 			goto done;
11527 	} else {
11528 		if (edit_in_progress) {
11529 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
11530 			goto done;
11531 		}
11532 
11533 		error = got_ref_open(&branch, repo,
11534 		    got_worktree_get_head_ref_name(worktree), 0);
11535 		if (error != NULL)
11536 			goto done;
11537 
11538 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
11539 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
11540 			    "will not edit commit history of a branch outside "
11541 			    "the \"refs/heads/\" reference namespace");
11542 			goto done;
11543 		}
11544 
11545 		error = got_ref_resolve(&head_commit_id, repo, branch);
11546 		got_ref_close(branch);
11547 		branch = NULL;
11548 		if (error)
11549 			goto done;
11550 
11551 		error = got_object_open_as_commit(&commit, repo,
11552 		    head_commit_id);
11553 		if (error)
11554 			goto done;
11555 		parent_ids = got_object_commit_get_parent_ids(commit);
11556 		pid = STAILQ_FIRST(parent_ids);
11557 		if (pid == NULL) {
11558 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11559 			goto done;
11560 		}
11561 		error = collect_commits(&commits, head_commit_id, &pid->id,
11562 		    got_worktree_get_base_commit_id(worktree),
11563 		    got_worktree_get_path_prefix(worktree),
11564 		    GOT_ERR_HISTEDIT_PATH, repo);
11565 		got_object_commit_close(commit);
11566 		commit = NULL;
11567 		if (error)
11568 			goto done;
11569 
11570 		if (STAILQ_EMPTY(&commits)) {
11571 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11572 			goto done;
11573 		}
11574 
11575 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
11576 		    &base_commit_id, &fileindex, worktree, repo);
11577 		if (error)
11578 			goto done;
11579 
11580 		if (edit_script_path) {
11581 			error = histedit_load_list(&histedit_cmds,
11582 			    edit_script_path, repo);
11583 			if (error) {
11584 				got_worktree_histedit_abort(worktree, fileindex,
11585 				    repo, branch, base_commit_id,
11586 				    abort_progress, &upa);
11587 				print_merge_progress_stats(&upa);
11588 				goto done;
11589 			}
11590 		} else {
11591 			const char *branch_name;
11592 			branch_name = got_ref_get_symref_target(branch);
11593 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
11594 				branch_name += 11;
11595 			error = histedit_edit_script(&histedit_cmds, &commits,
11596 			    branch_name, edit_logmsg_only, fold_only,
11597 			    edit_only, repo);
11598 			if (error) {
11599 				got_worktree_histedit_abort(worktree, fileindex,
11600 				    repo, branch, base_commit_id,
11601 				    abort_progress, &upa);
11602 				print_merge_progress_stats(&upa);
11603 				goto done;
11604 			}
11605 
11606 		}
11607 
11608 		error = histedit_save_list(&histedit_cmds, worktree,
11609 		    repo);
11610 		if (error) {
11611 			got_worktree_histedit_abort(worktree, fileindex,
11612 			    repo, branch, base_commit_id,
11613 			    abort_progress, &upa);
11614 			print_merge_progress_stats(&upa);
11615 			goto done;
11616 		}
11617 
11618 	}
11619 
11620 	error = histedit_check_script(&histedit_cmds, &commits, repo);
11621 	if (error)
11622 		goto done;
11623 
11624 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
11625 		if (resume_commit_id) {
11626 			if (got_object_id_cmp(hle->commit_id,
11627 			    resume_commit_id) != 0)
11628 				continue;
11629 
11630 			resume_commit_id = NULL;
11631 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
11632 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
11633 				error = histedit_skip_commit(hle, worktree,
11634 				    repo);
11635 				if (error)
11636 					goto done;
11637 			} else {
11638 				struct got_pathlist_head paths;
11639 				int have_changes = 0;
11640 
11641 				TAILQ_INIT(&paths);
11642 				error = got_pathlist_append(&paths, "", NULL);
11643 				if (error)
11644 					goto done;
11645 				error = got_worktree_status(worktree, &paths,
11646 				    repo, 0, check_local_changes, &have_changes,
11647 				    check_cancelled, NULL);
11648 				got_pathlist_free(&paths);
11649 				if (error) {
11650 					if (error->code != GOT_ERR_CANCELLED)
11651 						goto done;
11652 					if (sigint_received || sigpipe_received)
11653 						goto done;
11654 				}
11655 				if (have_changes) {
11656 					error = histedit_commit(NULL, worktree,
11657 					    fileindex, tmp_branch, hle, repo);
11658 					if (error)
11659 						goto done;
11660 				} else {
11661 					error = got_object_open_as_commit(
11662 					    &commit, repo, hle->commit_id);
11663 					if (error)
11664 						goto done;
11665 					error = show_histedit_progress(commit,
11666 					    hle, NULL);
11667 					got_object_commit_close(commit);
11668 					commit = NULL;
11669 					if (error)
11670 						goto done;
11671 				}
11672 			}
11673 			continue;
11674 		}
11675 
11676 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
11677 			error = histedit_skip_commit(hle, worktree, repo);
11678 			if (error)
11679 				goto done;
11680 			continue;
11681 		}
11682 
11683 		error = got_object_open_as_commit(&commit, repo,
11684 		    hle->commit_id);
11685 		if (error)
11686 			goto done;
11687 		parent_ids = got_object_commit_get_parent_ids(commit);
11688 		pid = STAILQ_FIRST(parent_ids);
11689 
11690 		error = got_worktree_histedit_merge_files(&merged_paths,
11691 		    worktree, fileindex, &pid->id, hle->commit_id, repo,
11692 		    update_progress, &upa, check_cancelled, NULL);
11693 		if (error)
11694 			goto done;
11695 		got_object_commit_close(commit);
11696 		commit = NULL;
11697 
11698 		print_merge_progress_stats(&upa);
11699 		if (upa.conflicts > 0 || upa.missing > 0 ||
11700 		    upa.not_deleted > 0 || upa.unversioned > 0) {
11701 			if (upa.conflicts > 0) {
11702 				error = show_rebase_merge_conflict(
11703 				    hle->commit_id, repo);
11704 				if (error)
11705 					goto done;
11706 			}
11707 			got_worktree_rebase_pathlist_free(&merged_paths);
11708 			break;
11709 		}
11710 
11711 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
11712 			char *id_str;
11713 			error = got_object_id_str(&id_str, hle->commit_id);
11714 			if (error)
11715 				goto done;
11716 			printf("Stopping histedit for amending commit %s\n",
11717 			    id_str);
11718 			free(id_str);
11719 			got_worktree_rebase_pathlist_free(&merged_paths);
11720 			error = got_worktree_histedit_postpone(worktree,
11721 			    fileindex);
11722 			goto done;
11723 		}
11724 
11725 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
11726 			error = histedit_skip_commit(hle, worktree, repo);
11727 			if (error)
11728 				goto done;
11729 			continue;
11730 		}
11731 
11732 		error = histedit_commit(&merged_paths, worktree, fileindex,
11733 		    tmp_branch, hle, repo);
11734 		got_worktree_rebase_pathlist_free(&merged_paths);
11735 		if (error)
11736 			goto done;
11737 	}
11738 
11739 	if (upa.conflicts > 0 || upa.missing > 0 ||
11740 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11741 		error = got_worktree_histedit_postpone(worktree, fileindex);
11742 		if (error)
11743 			goto done;
11744 		if (upa.conflicts > 0 && upa.missing == 0 &&
11745 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11746 			error = got_error_msg(GOT_ERR_CONFLICTS,
11747 			    "conflicts must be resolved before histedit "
11748 			    "can continue");
11749 		} else if (upa.conflicts > 0) {
11750 			error = got_error_msg(GOT_ERR_CONFLICTS,
11751 			    "conflicts must be resolved before histedit "
11752 			    "can continue; changes destined for some "
11753 			    "files were not yet merged and should be "
11754 			    "merged manually if required before the "
11755 			    "histedit operation is continued");
11756 		} else {
11757 			error = got_error_msg(GOT_ERR_CONFLICTS,
11758 			    "changes destined for some files were not "
11759 			    "yet merged and should be merged manually "
11760 			    "if required before the histedit operation "
11761 			    "is continued");
11762 		}
11763 	} else
11764 		error = histedit_complete(worktree, fileindex, tmp_branch,
11765 		    branch, repo);
11766 done:
11767 	got_object_id_queue_free(&commits);
11768 	histedit_free_list(&histedit_cmds);
11769 	free(head_commit_id);
11770 	free(base_commit_id);
11771 	free(resume_commit_id);
11772 	if (commit)
11773 		got_object_commit_close(commit);
11774 	if (branch)
11775 		got_ref_close(branch);
11776 	if (tmp_branch)
11777 		got_ref_close(tmp_branch);
11778 	if (worktree)
11779 		got_worktree_close(worktree);
11780 	if (repo) {
11781 		const struct got_error *close_err = got_repo_close(repo);
11782 		if (error == NULL)
11783 			error = close_err;
11784 	}
11785 	if (pack_fds) {
11786 		const struct got_error *pack_err =
11787 		    got_repo_pack_fds_close(pack_fds);
11788 		if (error == NULL)
11789 			error = pack_err;
11790 	}
11791 	return error;
11792 }
11793 
11794 __dead static void
11795 usage_integrate(void)
11796 {
11797 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
11798 	exit(1);
11799 }
11800 
11801 static const struct got_error *
11802 cmd_integrate(int argc, char *argv[])
11803 {
11804 	const struct got_error *error = NULL;
11805 	struct got_repository *repo = NULL;
11806 	struct got_worktree *worktree = NULL;
11807 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
11808 	const char *branch_arg = NULL;
11809 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
11810 	struct got_fileindex *fileindex = NULL;
11811 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
11812 	int ch;
11813 	struct got_update_progress_arg upa;
11814 	int *pack_fds = NULL;
11815 
11816 	while ((ch = getopt(argc, argv, "")) != -1) {
11817 		switch (ch) {
11818 		default:
11819 			usage_integrate();
11820 			/* NOTREACHED */
11821 		}
11822 	}
11823 
11824 	argc -= optind;
11825 	argv += optind;
11826 
11827 	if (argc != 1)
11828 		usage_integrate();
11829 	branch_arg = argv[0];
11830 #ifndef PROFILE
11831 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11832 	    "unveil", NULL) == -1)
11833 		err(1, "pledge");
11834 #endif
11835 	cwd = getcwd(NULL, 0);
11836 	if (cwd == NULL) {
11837 		error = got_error_from_errno("getcwd");
11838 		goto done;
11839 	}
11840 
11841 	error = got_repo_pack_fds_open(&pack_fds);
11842 	if (error != NULL)
11843 		goto done;
11844 
11845 	error = got_worktree_open(&worktree, cwd);
11846 	if (error) {
11847 		if (error->code == GOT_ERR_NOT_WORKTREE)
11848 			error = wrap_not_worktree_error(error, "integrate",
11849 			    cwd);
11850 		goto done;
11851 	}
11852 
11853 	error = check_rebase_or_histedit_in_progress(worktree);
11854 	if (error)
11855 		goto done;
11856 
11857 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11858 	    NULL, pack_fds);
11859 	if (error != NULL)
11860 		goto done;
11861 
11862 	error = apply_unveil(got_repo_get_path(repo), 0,
11863 	    got_worktree_get_root_path(worktree));
11864 	if (error)
11865 		goto done;
11866 
11867 	error = check_merge_in_progress(worktree, repo);
11868 	if (error)
11869 		goto done;
11870 
11871 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
11872 		error = got_error_from_errno("asprintf");
11873 		goto done;
11874 	}
11875 
11876 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
11877 	    &base_branch_ref, worktree, refname, repo);
11878 	if (error)
11879 		goto done;
11880 
11881 	refname = strdup(got_ref_get_name(branch_ref));
11882 	if (refname == NULL) {
11883 		error = got_error_from_errno("strdup");
11884 		got_worktree_integrate_abort(worktree, fileindex, repo,
11885 		    branch_ref, base_branch_ref);
11886 		goto done;
11887 	}
11888 	base_refname = strdup(got_ref_get_name(base_branch_ref));
11889 	if (base_refname == NULL) {
11890 		error = got_error_from_errno("strdup");
11891 		got_worktree_integrate_abort(worktree, fileindex, repo,
11892 		    branch_ref, base_branch_ref);
11893 		goto done;
11894 	}
11895 
11896 	error = got_ref_resolve(&commit_id, repo, branch_ref);
11897 	if (error)
11898 		goto done;
11899 
11900 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
11901 	if (error)
11902 		goto done;
11903 
11904 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
11905 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
11906 		    "specified branch has already been integrated");
11907 		got_worktree_integrate_abort(worktree, fileindex, repo,
11908 		    branch_ref, base_branch_ref);
11909 		goto done;
11910 	}
11911 
11912 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
11913 	if (error) {
11914 		if (error->code == GOT_ERR_ANCESTRY)
11915 			error = got_error(GOT_ERR_REBASE_REQUIRED);
11916 		got_worktree_integrate_abort(worktree, fileindex, repo,
11917 		    branch_ref, base_branch_ref);
11918 		goto done;
11919 	}
11920 
11921 	memset(&upa, 0, sizeof(upa));
11922 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
11923 	    branch_ref, base_branch_ref, update_progress, &upa,
11924 	    check_cancelled, NULL);
11925 	if (error)
11926 		goto done;
11927 
11928 	printf("Integrated %s into %s\n", refname, base_refname);
11929 	print_update_progress_stats(&upa);
11930 done:
11931 	if (repo) {
11932 		const struct got_error *close_err = got_repo_close(repo);
11933 		if (error == NULL)
11934 			error = close_err;
11935 	}
11936 	if (worktree)
11937 		got_worktree_close(worktree);
11938 	if (pack_fds) {
11939 		const struct got_error *pack_err =
11940 		    got_repo_pack_fds_close(pack_fds);
11941 		if (error == NULL)
11942 			error = pack_err;
11943 	}
11944 	free(cwd);
11945 	free(base_commit_id);
11946 	free(commit_id);
11947 	free(refname);
11948 	free(base_refname);
11949 	return error;
11950 }
11951 
11952 __dead static void
11953 usage_merge(void)
11954 {
11955 	fprintf(stderr, "usage: %s merge [-a] [-c] [-n] [branch]\n",
11956 	    getprogname());
11957 	exit(1);
11958 }
11959 
11960 static const struct got_error *
11961 cmd_merge(int argc, char *argv[])
11962 {
11963 	const struct got_error *error = NULL;
11964 	struct got_worktree *worktree = NULL;
11965 	struct got_repository *repo = NULL;
11966 	struct got_fileindex *fileindex = NULL;
11967 	char *cwd = NULL, *id_str = NULL, *author = NULL;
11968 	struct got_reference *branch = NULL, *wt_branch = NULL;
11969 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
11970 	struct got_object_id *wt_branch_tip = NULL;
11971 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
11972 	int interrupt_merge = 0;
11973 	struct got_update_progress_arg upa;
11974 	struct got_object_id *merge_commit_id = NULL;
11975 	char *branch_name = NULL;
11976 	int *pack_fds = NULL;
11977 
11978 	memset(&upa, 0, sizeof(upa));
11979 
11980 	while ((ch = getopt(argc, argv, "acn")) != -1) {
11981 		switch (ch) {
11982 		case 'a':
11983 			abort_merge = 1;
11984 			break;
11985 		case 'c':
11986 			continue_merge = 1;
11987 			break;
11988 		case 'n':
11989 			interrupt_merge = 1;
11990 			break;
11991 		default:
11992 			usage_rebase();
11993 			/* NOTREACHED */
11994 		}
11995 	}
11996 
11997 	argc -= optind;
11998 	argv += optind;
11999 
12000 #ifndef PROFILE
12001 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12002 	    "unveil", NULL) == -1)
12003 		err(1, "pledge");
12004 #endif
12005 
12006 	if (abort_merge && continue_merge)
12007 		option_conflict('a', 'c');
12008 	if (abort_merge || continue_merge) {
12009 		if (argc != 0)
12010 			usage_merge();
12011 	} else if (argc != 1)
12012 		usage_merge();
12013 
12014 	cwd = getcwd(NULL, 0);
12015 	if (cwd == NULL) {
12016 		error = got_error_from_errno("getcwd");
12017 		goto done;
12018 	}
12019 
12020 	error = got_repo_pack_fds_open(&pack_fds);
12021 	if (error != NULL)
12022 		goto done;
12023 
12024 	error = got_worktree_open(&worktree, cwd);
12025 	if (error) {
12026 		if (error->code == GOT_ERR_NOT_WORKTREE)
12027 			error = wrap_not_worktree_error(error,
12028 			    "merge", cwd);
12029 		goto done;
12030 	}
12031 
12032 	error = got_repo_open(&repo,
12033 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL,
12034 	    pack_fds);
12035 	if (error != NULL)
12036 		goto done;
12037 
12038 	error = apply_unveil(got_repo_get_path(repo), 0,
12039 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
12040 	if (error)
12041 		goto done;
12042 
12043 	error = check_rebase_or_histedit_in_progress(worktree);
12044 	if (error)
12045 		goto done;
12046 
12047 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
12048 	    repo);
12049 	if (error)
12050 		goto done;
12051 
12052 	if (abort_merge) {
12053 		if (!merge_in_progress) {
12054 			error = got_error(GOT_ERR_NOT_MERGING);
12055 			goto done;
12056 		}
12057 		error = got_worktree_merge_continue(&branch_name,
12058 		    &branch_tip, &fileindex, worktree, repo);
12059 		if (error)
12060 			goto done;
12061 		error = got_worktree_merge_abort(worktree, fileindex, repo,
12062 		    abort_progress, &upa);
12063 		if (error)
12064 			goto done;
12065 		printf("Merge of %s aborted\n", branch_name);
12066 		goto done; /* nothing else to do */
12067 	}
12068 
12069 	error = get_author(&author, repo, worktree);
12070 	if (error)
12071 		goto done;
12072 
12073 	if (continue_merge) {
12074 		if (!merge_in_progress) {
12075 			error = got_error(GOT_ERR_NOT_MERGING);
12076 			goto done;
12077 		}
12078 		error = got_worktree_merge_continue(&branch_name,
12079 		    &branch_tip, &fileindex, worktree, repo);
12080 		if (error)
12081 			goto done;
12082 	} else {
12083 		error = got_ref_open(&branch, repo, argv[0], 0);
12084 		if (error != NULL)
12085 			goto done;
12086 		branch_name = strdup(got_ref_get_name(branch));
12087 		if (branch_name == NULL) {
12088 			error = got_error_from_errno("strdup");
12089 			goto done;
12090 		}
12091 		error = got_ref_resolve(&branch_tip, repo, branch);
12092 		if (error)
12093 			goto done;
12094 	}
12095 
12096 	error = got_ref_open(&wt_branch, repo,
12097 	    got_worktree_get_head_ref_name(worktree), 0);
12098 	if (error)
12099 		goto done;
12100 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
12101 	if (error)
12102 		goto done;
12103 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
12104 	    wt_branch_tip, branch_tip, 0, repo,
12105 	    check_cancelled, NULL);
12106 	if (error && error->code != GOT_ERR_ANCESTRY)
12107 		goto done;
12108 
12109 	if (!continue_merge) {
12110 		error = check_path_prefix(wt_branch_tip, branch_tip,
12111 		    got_worktree_get_path_prefix(worktree),
12112 		    GOT_ERR_MERGE_PATH, repo);
12113 		if (error)
12114 			goto done;
12115 		if (yca_id) {
12116 			error = check_same_branch(wt_branch_tip, branch,
12117 			    yca_id, repo);
12118 			if (error) {
12119 				if (error->code != GOT_ERR_ANCESTRY)
12120 					goto done;
12121 				error = NULL;
12122 			} else {
12123 				static char msg[512];
12124 				snprintf(msg, sizeof(msg),
12125 				    "cannot create a merge commit because "
12126 				    "%s is based on %s; %s can be integrated "
12127 				    "with 'got integrate' instead", branch_name,
12128 				    got_worktree_get_head_ref_name(worktree),
12129 				    branch_name);
12130 				error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
12131 				goto done;
12132 			}
12133 		}
12134 		error = got_worktree_merge_prepare(&fileindex, worktree,
12135 		    branch, repo);
12136 		if (error)
12137 			goto done;
12138 
12139 		error = got_worktree_merge_branch(worktree, fileindex,
12140 		    yca_id, branch_tip, repo, update_progress, &upa,
12141 		    check_cancelled, NULL);
12142 		if (error)
12143 			goto done;
12144 		print_merge_progress_stats(&upa);
12145 		if (!upa.did_something) {
12146 			error = got_worktree_merge_abort(worktree, fileindex,
12147 			    repo, abort_progress, &upa);
12148 			if (error)
12149 				goto done;
12150 			printf("Already up-to-date\n");
12151 			goto done;
12152 		}
12153 	}
12154 
12155 	if (interrupt_merge) {
12156 		error = got_worktree_merge_postpone(worktree, fileindex);
12157 		if (error)
12158 			goto done;
12159 		printf("Merge of %s interrupted on request\n", branch_name);
12160 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
12161 	    upa.not_deleted > 0 || upa.unversioned > 0) {
12162 		error = got_worktree_merge_postpone(worktree, fileindex);
12163 		if (error)
12164 			goto done;
12165 		if (upa.conflicts > 0 && upa.missing == 0 &&
12166 		    upa.not_deleted == 0 && upa.unversioned == 0) {
12167 			error = got_error_msg(GOT_ERR_CONFLICTS,
12168 			    "conflicts must be resolved before merging "
12169 			    "can continue");
12170 		} else if (upa.conflicts > 0) {
12171 			error = got_error_msg(GOT_ERR_CONFLICTS,
12172 			    "conflicts must be resolved before merging "
12173 			    "can continue; changes destined for some "
12174 			    "files were not yet merged and "
12175 			    "should be merged manually if required before the "
12176 			    "merge operation is continued");
12177 		} else {
12178 			error = got_error_msg(GOT_ERR_CONFLICTS,
12179 			    "changes destined for some "
12180 			    "files were not yet merged and should be "
12181 			    "merged manually if required before the "
12182 			    "merge operation is continued");
12183 		}
12184 		goto done;
12185 	} else {
12186 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
12187 		    fileindex, author, NULL, 1, branch_tip, branch_name,
12188 		    repo, continue_merge ? print_status : NULL, NULL);
12189 		if (error)
12190 			goto done;
12191 		error = got_worktree_merge_complete(worktree, fileindex, repo);
12192 		if (error)
12193 			goto done;
12194 		error = got_object_id_str(&id_str, merge_commit_id);
12195 		if (error)
12196 			goto done;
12197 		printf("Merged %s into %s: %s\n", branch_name,
12198 		    got_worktree_get_head_ref_name(worktree),
12199 		    id_str);
12200 
12201 	}
12202 done:
12203 	free(id_str);
12204 	free(merge_commit_id);
12205 	free(author);
12206 	free(branch_tip);
12207 	free(branch_name);
12208 	free(yca_id);
12209 	if (branch)
12210 		got_ref_close(branch);
12211 	if (wt_branch)
12212 		got_ref_close(wt_branch);
12213 	if (worktree)
12214 		got_worktree_close(worktree);
12215 	if (repo) {
12216 		const struct got_error *close_err = got_repo_close(repo);
12217 		if (error == NULL)
12218 			error = close_err;
12219 	}
12220 	if (pack_fds) {
12221 		const struct got_error *pack_err =
12222 		    got_repo_pack_fds_close(pack_fds);
12223 		if (error == NULL)
12224 			error = pack_err;
12225 	}
12226 	return error;
12227 }
12228 
12229 __dead static void
12230 usage_stage(void)
12231 {
12232 	fprintf(stderr, "usage: %s stage [-l] | [-p] [-F response-script] "
12233 	    "[-S] [file-path ...]\n",
12234 	    getprogname());
12235 	exit(1);
12236 }
12237 
12238 static const struct got_error *
12239 print_stage(void *arg, unsigned char status, unsigned char staged_status,
12240     const char *path, struct got_object_id *blob_id,
12241     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
12242     int dirfd, const char *de_name)
12243 {
12244 	const struct got_error *err = NULL;
12245 	char *id_str = NULL;
12246 
12247 	if (staged_status != GOT_STATUS_ADD &&
12248 	    staged_status != GOT_STATUS_MODIFY &&
12249 	    staged_status != GOT_STATUS_DELETE)
12250 		return NULL;
12251 
12252 	if (staged_status == GOT_STATUS_ADD ||
12253 	    staged_status == GOT_STATUS_MODIFY)
12254 		err = got_object_id_str(&id_str, staged_blob_id);
12255 	else
12256 		err = got_object_id_str(&id_str, blob_id);
12257 	if (err)
12258 		return err;
12259 
12260 	printf("%s %c %s\n", id_str, staged_status, path);
12261 	free(id_str);
12262 	return NULL;
12263 }
12264 
12265 static const struct got_error *
12266 cmd_stage(int argc, char *argv[])
12267 {
12268 	const struct got_error *error = NULL;
12269 	struct got_repository *repo = NULL;
12270 	struct got_worktree *worktree = NULL;
12271 	char *cwd = NULL;
12272 	struct got_pathlist_head paths;
12273 	struct got_pathlist_entry *pe;
12274 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
12275 	FILE *patch_script_file = NULL;
12276 	const char *patch_script_path = NULL;
12277 	struct choose_patch_arg cpa;
12278 	int *pack_fds = NULL;
12279 
12280 	TAILQ_INIT(&paths);
12281 
12282 	while ((ch = getopt(argc, argv, "lpF:S")) != -1) {
12283 		switch (ch) {
12284 		case 'l':
12285 			list_stage = 1;
12286 			break;
12287 		case 'p':
12288 			pflag = 1;
12289 			break;
12290 		case 'F':
12291 			patch_script_path = optarg;
12292 			break;
12293 		case 'S':
12294 			allow_bad_symlinks = 1;
12295 			break;
12296 		default:
12297 			usage_stage();
12298 			/* NOTREACHED */
12299 		}
12300 	}
12301 
12302 	argc -= optind;
12303 	argv += optind;
12304 
12305 #ifndef PROFILE
12306 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12307 	    "unveil", NULL) == -1)
12308 		err(1, "pledge");
12309 #endif
12310 	if (list_stage && (pflag || patch_script_path))
12311 		errx(1, "-l option cannot be used with other options");
12312 	if (patch_script_path && !pflag)
12313 		errx(1, "-F option can only be used together with -p option");
12314 
12315 	cwd = getcwd(NULL, 0);
12316 	if (cwd == NULL) {
12317 		error = got_error_from_errno("getcwd");
12318 		goto done;
12319 	}
12320 
12321 	error = got_repo_pack_fds_open(&pack_fds);
12322 	if (error != NULL)
12323 		goto done;
12324 
12325 	error = got_worktree_open(&worktree, cwd);
12326 	if (error) {
12327 		if (error->code == GOT_ERR_NOT_WORKTREE)
12328 			error = wrap_not_worktree_error(error, "stage", cwd);
12329 		goto done;
12330 	}
12331 
12332 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12333 	    NULL, pack_fds);
12334 	if (error != NULL)
12335 		goto done;
12336 
12337 	if (patch_script_path) {
12338 		patch_script_file = fopen(patch_script_path, "re");
12339 		if (patch_script_file == NULL) {
12340 			error = got_error_from_errno2("fopen",
12341 			    patch_script_path);
12342 			goto done;
12343 		}
12344 	}
12345 	error = apply_unveil(got_repo_get_path(repo), 0,
12346 	    got_worktree_get_root_path(worktree));
12347 	if (error)
12348 		goto done;
12349 
12350 	error = check_merge_in_progress(worktree, repo);
12351 	if (error)
12352 		goto done;
12353 
12354 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
12355 	if (error)
12356 		goto done;
12357 
12358 	if (list_stage)
12359 		error = got_worktree_status(worktree, &paths, repo, 0,
12360 		    print_stage, NULL, check_cancelled, NULL);
12361 	else {
12362 		cpa.patch_script_file = patch_script_file;
12363 		cpa.action = "stage";
12364 		error = got_worktree_stage(worktree, &paths,
12365 		    pflag ? NULL : print_status, NULL,
12366 		    pflag ? choose_patch : NULL, &cpa,
12367 		    allow_bad_symlinks, repo);
12368 	}
12369 done:
12370 	if (patch_script_file && fclose(patch_script_file) == EOF &&
12371 	    error == NULL)
12372 		error = got_error_from_errno2("fclose", patch_script_path);
12373 	if (repo) {
12374 		const struct got_error *close_err = got_repo_close(repo);
12375 		if (error == NULL)
12376 			error = close_err;
12377 	}
12378 	if (worktree)
12379 		got_worktree_close(worktree);
12380 	if (pack_fds) {
12381 		const struct got_error *pack_err =
12382 		    got_repo_pack_fds_close(pack_fds);
12383 		if (error == NULL)
12384 			error = pack_err;
12385 	}
12386 	TAILQ_FOREACH(pe, &paths, entry)
12387 		free((char *)pe->path);
12388 	got_pathlist_free(&paths);
12389 	free(cwd);
12390 	return error;
12391 }
12392 
12393 __dead static void
12394 usage_unstage(void)
12395 {
12396 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
12397 	    "[file-path ...]\n",
12398 	    getprogname());
12399 	exit(1);
12400 }
12401 
12402 
12403 static const struct got_error *
12404 cmd_unstage(int argc, char *argv[])
12405 {
12406 	const struct got_error *error = NULL;
12407 	struct got_repository *repo = NULL;
12408 	struct got_worktree *worktree = NULL;
12409 	char *cwd = NULL;
12410 	struct got_pathlist_head paths;
12411 	struct got_pathlist_entry *pe;
12412 	int ch, pflag = 0;
12413 	struct got_update_progress_arg upa;
12414 	FILE *patch_script_file = NULL;
12415 	const char *patch_script_path = NULL;
12416 	struct choose_patch_arg cpa;
12417 	int *pack_fds = NULL;
12418 
12419 	TAILQ_INIT(&paths);
12420 
12421 	while ((ch = getopt(argc, argv, "pF:")) != -1) {
12422 		switch (ch) {
12423 		case 'p':
12424 			pflag = 1;
12425 			break;
12426 		case 'F':
12427 			patch_script_path = optarg;
12428 			break;
12429 		default:
12430 			usage_unstage();
12431 			/* NOTREACHED */
12432 		}
12433 	}
12434 
12435 	argc -= optind;
12436 	argv += optind;
12437 
12438 #ifndef PROFILE
12439 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12440 	    "unveil", NULL) == -1)
12441 		err(1, "pledge");
12442 #endif
12443 	if (patch_script_path && !pflag)
12444 		errx(1, "-F option can only be used together with -p option");
12445 
12446 	cwd = getcwd(NULL, 0);
12447 	if (cwd == NULL) {
12448 		error = got_error_from_errno("getcwd");
12449 		goto done;
12450 	}
12451 
12452 	error = got_repo_pack_fds_open(&pack_fds);
12453 	if (error != NULL)
12454 		goto done;
12455 
12456 	error = got_worktree_open(&worktree, cwd);
12457 	if (error) {
12458 		if (error->code == GOT_ERR_NOT_WORKTREE)
12459 			error = wrap_not_worktree_error(error, "unstage", cwd);
12460 		goto done;
12461 	}
12462 
12463 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12464 	    NULL, pack_fds);
12465 	if (error != NULL)
12466 		goto done;
12467 
12468 	if (patch_script_path) {
12469 		patch_script_file = fopen(patch_script_path, "re");
12470 		if (patch_script_file == NULL) {
12471 			error = got_error_from_errno2("fopen",
12472 			    patch_script_path);
12473 			goto done;
12474 		}
12475 	}
12476 
12477 	error = apply_unveil(got_repo_get_path(repo), 0,
12478 	    got_worktree_get_root_path(worktree));
12479 	if (error)
12480 		goto done;
12481 
12482 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
12483 	if (error)
12484 		goto done;
12485 
12486 	cpa.patch_script_file = patch_script_file;
12487 	cpa.action = "unstage";
12488 	memset(&upa, 0, sizeof(upa));
12489 	error = got_worktree_unstage(worktree, &paths, update_progress,
12490 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
12491 	if (!error)
12492 		print_merge_progress_stats(&upa);
12493 done:
12494 	if (patch_script_file && fclose(patch_script_file) == EOF &&
12495 	    error == NULL)
12496 		error = got_error_from_errno2("fclose", patch_script_path);
12497 	if (repo) {
12498 		const struct got_error *close_err = got_repo_close(repo);
12499 		if (error == NULL)
12500 			error = close_err;
12501 	}
12502 	if (worktree)
12503 		got_worktree_close(worktree);
12504 	if (pack_fds) {
12505 		const struct got_error *pack_err =
12506 		    got_repo_pack_fds_close(pack_fds);
12507 		if (error == NULL)
12508 			error = pack_err;
12509 	}
12510 	TAILQ_FOREACH(pe, &paths, entry)
12511 		free((char *)pe->path);
12512 	got_pathlist_free(&paths);
12513 	free(cwd);
12514 	return error;
12515 }
12516 
12517 __dead static void
12518 usage_cat(void)
12519 {
12520 	fprintf(stderr, "usage: %s cat [-r repository ] [ -c commit ] [ -P ] "
12521 	    "arg1 [arg2 ...]\n", getprogname());
12522 	exit(1);
12523 }
12524 
12525 static const struct got_error *
12526 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12527 {
12528 	const struct got_error *err;
12529 	struct got_blob_object *blob;
12530 	int fd = -1;
12531 
12532 	fd = got_opentempfd();
12533 	if (fd == -1)
12534 		return got_error_from_errno("got_opentempfd");
12535 
12536 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
12537 	if (err)
12538 		goto done;
12539 
12540 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
12541 done:
12542 	if (fd != -1 && close(fd) == -1 && err == NULL)
12543 		err = got_error_from_errno("close");
12544 	if (blob)
12545 		got_object_blob_close(blob);
12546 	return err;
12547 }
12548 
12549 static const struct got_error *
12550 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12551 {
12552 	const struct got_error *err;
12553 	struct got_tree_object *tree;
12554 	int nentries, i;
12555 
12556 	err = got_object_open_as_tree(&tree, repo, id);
12557 	if (err)
12558 		return err;
12559 
12560 	nentries = got_object_tree_get_nentries(tree);
12561 	for (i = 0; i < nentries; i++) {
12562 		struct got_tree_entry *te;
12563 		char *id_str;
12564 		if (sigint_received || sigpipe_received)
12565 			break;
12566 		te = got_object_tree_get_entry(tree, i);
12567 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
12568 		if (err)
12569 			break;
12570 		fprintf(outfile, "%s %.7o %s\n", id_str,
12571 		    got_tree_entry_get_mode(te),
12572 		    got_tree_entry_get_name(te));
12573 		free(id_str);
12574 	}
12575 
12576 	got_object_tree_close(tree);
12577 	return err;
12578 }
12579 
12580 static const struct got_error *
12581 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12582 {
12583 	const struct got_error *err;
12584 	struct got_commit_object *commit;
12585 	const struct got_object_id_queue *parent_ids;
12586 	struct got_object_qid *pid;
12587 	char *id_str = NULL;
12588 	const char *logmsg = NULL;
12589 	char gmtoff[6];
12590 
12591 	err = got_object_open_as_commit(&commit, repo, id);
12592 	if (err)
12593 		return err;
12594 
12595 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
12596 	if (err)
12597 		goto done;
12598 
12599 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
12600 	parent_ids = got_object_commit_get_parent_ids(commit);
12601 	fprintf(outfile, "numparents %d\n",
12602 	    got_object_commit_get_nparents(commit));
12603 	STAILQ_FOREACH(pid, parent_ids, entry) {
12604 		char *pid_str;
12605 		err = got_object_id_str(&pid_str, &pid->id);
12606 		if (err)
12607 			goto done;
12608 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
12609 		free(pid_str);
12610 	}
12611 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12612 	    got_object_commit_get_author_gmtoff(commit));
12613 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
12614 	    got_object_commit_get_author(commit),
12615 	    (long long)got_object_commit_get_author_time(commit),
12616 	    gmtoff);
12617 
12618 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12619 	    got_object_commit_get_committer_gmtoff(commit));
12620 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
12621 	    got_object_commit_get_author(commit),
12622 	    (long long)got_object_commit_get_committer_time(commit),
12623 	    gmtoff);
12624 
12625 	logmsg = got_object_commit_get_logmsg_raw(commit);
12626 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
12627 	fprintf(outfile, "%s", logmsg);
12628 done:
12629 	free(id_str);
12630 	got_object_commit_close(commit);
12631 	return err;
12632 }
12633 
12634 static const struct got_error *
12635 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12636 {
12637 	const struct got_error *err;
12638 	struct got_tag_object *tag;
12639 	char *id_str = NULL;
12640 	const char *tagmsg = NULL;
12641 	char gmtoff[6];
12642 
12643 	err = got_object_open_as_tag(&tag, repo, id);
12644 	if (err)
12645 		return err;
12646 
12647 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
12648 	if (err)
12649 		goto done;
12650 
12651 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
12652 
12653 	switch (got_object_tag_get_object_type(tag)) {
12654 	case GOT_OBJ_TYPE_BLOB:
12655 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12656 		    GOT_OBJ_LABEL_BLOB);
12657 		break;
12658 	case GOT_OBJ_TYPE_TREE:
12659 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12660 		    GOT_OBJ_LABEL_TREE);
12661 		break;
12662 	case GOT_OBJ_TYPE_COMMIT:
12663 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12664 		    GOT_OBJ_LABEL_COMMIT);
12665 		break;
12666 	case GOT_OBJ_TYPE_TAG:
12667 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12668 		    GOT_OBJ_LABEL_TAG);
12669 		break;
12670 	default:
12671 		break;
12672 	}
12673 
12674 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
12675 	    got_object_tag_get_name(tag));
12676 
12677 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12678 	    got_object_tag_get_tagger_gmtoff(tag));
12679 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
12680 	    got_object_tag_get_tagger(tag),
12681 	    (long long)got_object_tag_get_tagger_time(tag),
12682 	    gmtoff);
12683 
12684 	tagmsg = got_object_tag_get_message(tag);
12685 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
12686 	fprintf(outfile, "%s", tagmsg);
12687 done:
12688 	free(id_str);
12689 	got_object_tag_close(tag);
12690 	return err;
12691 }
12692 
12693 static const struct got_error *
12694 cmd_cat(int argc, char *argv[])
12695 {
12696 	const struct got_error *error;
12697 	struct got_repository *repo = NULL;
12698 	struct got_worktree *worktree = NULL;
12699 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
12700 	const char *commit_id_str = NULL;
12701 	struct got_object_id *id = NULL, *commit_id = NULL;
12702 	struct got_commit_object *commit = NULL;
12703 	int ch, obj_type, i, force_path = 0;
12704 	struct got_reflist_head refs;
12705 	int *pack_fds = NULL;
12706 
12707 	TAILQ_INIT(&refs);
12708 
12709 #ifndef PROFILE
12710 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
12711 	    NULL) == -1)
12712 		err(1, "pledge");
12713 #endif
12714 
12715 	while ((ch = getopt(argc, argv, "c:r:P")) != -1) {
12716 		switch (ch) {
12717 		case 'c':
12718 			commit_id_str = optarg;
12719 			break;
12720 		case 'r':
12721 			repo_path = realpath(optarg, NULL);
12722 			if (repo_path == NULL)
12723 				return got_error_from_errno2("realpath",
12724 				    optarg);
12725 			got_path_strip_trailing_slashes(repo_path);
12726 			break;
12727 		case 'P':
12728 			force_path = 1;
12729 			break;
12730 		default:
12731 			usage_cat();
12732 			/* NOTREACHED */
12733 		}
12734 	}
12735 
12736 	argc -= optind;
12737 	argv += optind;
12738 
12739 	cwd = getcwd(NULL, 0);
12740 	if (cwd == NULL) {
12741 		error = got_error_from_errno("getcwd");
12742 		goto done;
12743 	}
12744 
12745 	error = got_repo_pack_fds_open(&pack_fds);
12746 	if (error != NULL)
12747 		goto done;
12748 
12749 	if (repo_path == NULL) {
12750 		error = got_worktree_open(&worktree, cwd);
12751 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
12752 			goto done;
12753 		if (worktree) {
12754 			repo_path = strdup(
12755 			    got_worktree_get_repo_path(worktree));
12756 			if (repo_path == NULL) {
12757 				error = got_error_from_errno("strdup");
12758 				goto done;
12759 			}
12760 
12761 			/* Release work tree lock. */
12762 			got_worktree_close(worktree);
12763 			worktree = NULL;
12764 		}
12765 	}
12766 
12767 	if (repo_path == NULL) {
12768 		repo_path = strdup(cwd);
12769 		if (repo_path == NULL)
12770 			return got_error_from_errno("strdup");
12771 	}
12772 
12773 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
12774 	free(repo_path);
12775 	if (error != NULL)
12776 		goto done;
12777 
12778 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
12779 	if (error)
12780 		goto done;
12781 
12782 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
12783 	if (error)
12784 		goto done;
12785 
12786 	if (commit_id_str == NULL)
12787 		commit_id_str = GOT_REF_HEAD;
12788 	error = got_repo_match_object_id(&commit_id, NULL,
12789 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
12790 	if (error)
12791 		goto done;
12792 
12793 	error = got_object_open_as_commit(&commit, repo, commit_id);
12794 	if (error)
12795 		goto done;
12796 
12797 	for (i = 0; i < argc; i++) {
12798 		if (force_path) {
12799 			error = got_object_id_by_path(&id, repo, commit,
12800 			    argv[i]);
12801 			if (error)
12802 				break;
12803 		} else {
12804 			error = got_repo_match_object_id(&id, &label, argv[i],
12805 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
12806 			    repo);
12807 			if (error) {
12808 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
12809 				    error->code != GOT_ERR_NOT_REF)
12810 					break;
12811 				error = got_object_id_by_path(&id, repo,
12812 				    commit, argv[i]);
12813 				if (error)
12814 					break;
12815 			}
12816 		}
12817 
12818 		error = got_object_get_type(&obj_type, repo, id);
12819 		if (error)
12820 			break;
12821 
12822 		switch (obj_type) {
12823 		case GOT_OBJ_TYPE_BLOB:
12824 			error = cat_blob(id, repo, stdout);
12825 			break;
12826 		case GOT_OBJ_TYPE_TREE:
12827 			error = cat_tree(id, repo, stdout);
12828 			break;
12829 		case GOT_OBJ_TYPE_COMMIT:
12830 			error = cat_commit(id, repo, stdout);
12831 			break;
12832 		case GOT_OBJ_TYPE_TAG:
12833 			error = cat_tag(id, repo, stdout);
12834 			break;
12835 		default:
12836 			error = got_error(GOT_ERR_OBJ_TYPE);
12837 			break;
12838 		}
12839 		if (error)
12840 			break;
12841 		free(label);
12842 		label = NULL;
12843 		free(id);
12844 		id = NULL;
12845 	}
12846 done:
12847 	free(label);
12848 	free(id);
12849 	free(commit_id);
12850 	if (commit)
12851 		got_object_commit_close(commit);
12852 	if (worktree)
12853 		got_worktree_close(worktree);
12854 	if (repo) {
12855 		const struct got_error *close_err = got_repo_close(repo);
12856 		if (error == NULL)
12857 			error = close_err;
12858 	}
12859 	if (pack_fds) {
12860 		const struct got_error *pack_err =
12861 		    got_repo_pack_fds_close(pack_fds);
12862 		if (error == NULL)
12863 			error = pack_err;
12864 	}
12865 
12866 	got_ref_list_free(&refs);
12867 	return error;
12868 }
12869 
12870 __dead static void
12871 usage_info(void)
12872 {
12873 	fprintf(stderr, "usage: %s info [path ...]\n",
12874 	    getprogname());
12875 	exit(1);
12876 }
12877 
12878 static const struct got_error *
12879 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
12880     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
12881     struct got_object_id *commit_id)
12882 {
12883 	const struct got_error *err = NULL;
12884 	char *id_str = NULL;
12885 	char datebuf[128];
12886 	struct tm mytm, *tm;
12887 	struct got_pathlist_head *paths = arg;
12888 	struct got_pathlist_entry *pe;
12889 
12890 	/*
12891 	 * Clear error indication from any of the path arguments which
12892 	 * would cause this file index entry to be displayed.
12893 	 */
12894 	TAILQ_FOREACH(pe, paths, entry) {
12895 		if (got_path_cmp(path, pe->path, strlen(path),
12896 		    pe->path_len) == 0 ||
12897 		    got_path_is_child(path, pe->path, pe->path_len))
12898 			pe->data = NULL; /* no error */
12899 	}
12900 
12901 	printf(GOT_COMMIT_SEP_STR);
12902 	if (S_ISLNK(mode))
12903 		printf("symlink: %s\n", path);
12904 	else if (S_ISREG(mode)) {
12905 		printf("file: %s\n", path);
12906 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
12907 	} else if (S_ISDIR(mode))
12908 		printf("directory: %s\n", path);
12909 	else
12910 		printf("something: %s\n", path);
12911 
12912 	tm = localtime_r(&mtime, &mytm);
12913 	if (tm == NULL)
12914 		return NULL;
12915 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
12916 		return got_error(GOT_ERR_NO_SPACE);
12917 	printf("timestamp: %s\n", datebuf);
12918 
12919 	if (blob_id) {
12920 		err = got_object_id_str(&id_str, blob_id);
12921 		if (err)
12922 			return err;
12923 		printf("based on blob: %s\n", id_str);
12924 		free(id_str);
12925 	}
12926 
12927 	if (staged_blob_id) {
12928 		err = got_object_id_str(&id_str, staged_blob_id);
12929 		if (err)
12930 			return err;
12931 		printf("based on staged blob: %s\n", id_str);
12932 		free(id_str);
12933 	}
12934 
12935 	if (commit_id) {
12936 		err = got_object_id_str(&id_str, commit_id);
12937 		if (err)
12938 			return err;
12939 		printf("based on commit: %s\n", id_str);
12940 		free(id_str);
12941 	}
12942 
12943 	return NULL;
12944 }
12945 
12946 static const struct got_error *
12947 cmd_info(int argc, char *argv[])
12948 {
12949 	const struct got_error *error = NULL;
12950 	struct got_worktree *worktree = NULL;
12951 	char *cwd = NULL, *id_str = NULL;
12952 	struct got_pathlist_head paths;
12953 	struct got_pathlist_entry *pe;
12954 	char *uuidstr = NULL;
12955 	int ch, show_files = 0;
12956 	int *pack_fds = NULL;
12957 
12958 	TAILQ_INIT(&paths);
12959 
12960 	while ((ch = getopt(argc, argv, "")) != -1) {
12961 		switch (ch) {
12962 		default:
12963 			usage_info();
12964 			/* NOTREACHED */
12965 		}
12966 	}
12967 
12968 	argc -= optind;
12969 	argv += optind;
12970 
12971 #ifndef PROFILE
12972 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
12973 	    NULL) == -1)
12974 		err(1, "pledge");
12975 #endif
12976 	cwd = getcwd(NULL, 0);
12977 	if (cwd == NULL) {
12978 		error = got_error_from_errno("getcwd");
12979 		goto done;
12980 	}
12981 
12982 	error = got_repo_pack_fds_open(&pack_fds);
12983 	if (error != NULL)
12984 		goto done;
12985 
12986 	error = got_worktree_open(&worktree, cwd);
12987 	if (error) {
12988 		if (error->code == GOT_ERR_NOT_WORKTREE)
12989 			error = wrap_not_worktree_error(error, "info", cwd);
12990 		goto done;
12991 	}
12992 
12993 #ifndef PROFILE
12994 	/* Remove "cpath" promise. */
12995 	if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
12996 	    NULL) == -1)
12997 		err(1, "pledge");
12998 #endif
12999 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
13000 	if (error)
13001 		goto done;
13002 
13003 	if (argc >= 1) {
13004 		error = get_worktree_paths_from_argv(&paths, argc, argv,
13005 		    worktree);
13006 		if (error)
13007 			goto done;
13008 		show_files = 1;
13009 	}
13010 
13011 	error = got_object_id_str(&id_str,
13012 	    got_worktree_get_base_commit_id(worktree));
13013 	if (error)
13014 		goto done;
13015 
13016 	error = got_worktree_get_uuid(&uuidstr, worktree);
13017 	if (error)
13018 		goto done;
13019 
13020 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
13021 	printf("work tree base commit: %s\n", id_str);
13022 	printf("work tree path prefix: %s\n",
13023 	    got_worktree_get_path_prefix(worktree));
13024 	printf("work tree branch reference: %s\n",
13025 	    got_worktree_get_head_ref_name(worktree));
13026 	printf("work tree UUID: %s\n", uuidstr);
13027 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
13028 
13029 	if (show_files) {
13030 		struct got_pathlist_entry *pe;
13031 		TAILQ_FOREACH(pe, &paths, entry) {
13032 			if (pe->path_len == 0)
13033 				continue;
13034 			/*
13035 			 * Assume this path will fail. This will be corrected
13036 			 * in print_path_info() in case the path does suceeed.
13037 			 */
13038 			pe->data = (void *)got_error_path(pe->path,
13039 			    GOT_ERR_BAD_PATH);
13040 		}
13041 		error = got_worktree_path_info(worktree, &paths,
13042 		    print_path_info, &paths, check_cancelled, NULL);
13043 		if (error)
13044 			goto done;
13045 		TAILQ_FOREACH(pe, &paths, entry) {
13046 			if (pe->data != NULL) {
13047 				error = pe->data; /* bad path */
13048 				break;
13049 			}
13050 		}
13051 	}
13052 done:
13053 	if (pack_fds) {
13054 		const struct got_error *pack_err =
13055 		    got_repo_pack_fds_close(pack_fds);
13056 		if (error == NULL)
13057 			error = pack_err;
13058 	}
13059 	TAILQ_FOREACH(pe, &paths, entry)
13060 		free((char *)pe->path);
13061 	got_pathlist_free(&paths);
13062 	free(cwd);
13063 	free(id_str);
13064 	free(uuidstr);
13065 	return error;
13066 }