1 /*
2  * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
3  * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #include <sys/queue.h>
19 #include <sys/limits.h>
20 #include <sys/types.h>
21 #include <sys/stat.h>
22 
23 #include <err.h>
24 #include <errno.h>
25 #include <locale.h>
26 #include <signal.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <unistd.h>
31 #include <libgen.h>
32 #include <time.h>
33 
34 #include "got_error.h"
35 #include "got_object.h"
36 #include "got_reference.h"
37 #include "got_repository.h"
38 #include "got_worktree.h"
39 #include "got_diff.h"
40 #include "got_commit_graph.h"
41 #include "got_blame.h"
42 #include "got_privsep.h"
43 
44 #ifndef nitems
45 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
46 #endif
47 
48 static volatile sig_atomic_t sigint_received;
49 static volatile sig_atomic_t sigpipe_received;
50 
51 static void
52 catch_sigint(int signo)
53 {
54 	sigint_received = 1;
55 }
56 
57 static void
58 catch_sigpipe(int signo)
59 {
60 	sigpipe_received = 1;
61 }
62 
63 
64 struct cmd {
65 	const char	 *cmd_name;
66 	const struct got_error *(*cmd_main)(int, char *[]);
67 	void		(*cmd_usage)(void);
68 	const char	 *cmd_descr;
69 };
70 
71 __dead static void	usage(void);
72 __dead static void	usage_checkout(void);
73 __dead static void	usage_update(void);
74 __dead static void	usage_log(void);
75 __dead static void	usage_diff(void);
76 __dead static void	usage_blame(void);
77 __dead static void	usage_tree(void);
78 __dead static void	usage_status(void);
79 __dead static void	usage_ref(void);
80 __dead static void	usage_add(void);
81 __dead static void	usage_rm(void);
82 
83 static const struct got_error*		cmd_checkout(int, char *[]);
84 static const struct got_error*		cmd_update(int, char *[]);
85 static const struct got_error*		cmd_log(int, char *[]);
86 static const struct got_error*		cmd_diff(int, char *[]);
87 static const struct got_error*		cmd_blame(int, char *[]);
88 static const struct got_error*		cmd_tree(int, char *[]);
89 static const struct got_error*		cmd_status(int, char *[]);
90 static const struct got_error*		cmd_ref(int, char *[]);
91 static const struct got_error*		cmd_add(int, char *[]);
92 static const struct got_error*		cmd_rm(int, char *[]);
93 
94 static struct cmd got_commands[] = {
95 	{ "checkout",	cmd_checkout,	usage_checkout,
96 	    "check out a new work tree from a repository" },
97 	{ "update",	cmd_update,	usage_update,
98 	    "update a work tree to a different commit" },
99 	{ "log",	cmd_log,	usage_log,
100 	    "show repository history" },
101 	{ "diff",	cmd_diff,	usage_diff,
102 	    "compare files and directories" },
103 	{ "blame",	cmd_blame,	usage_blame,
104 	    "show when lines in a file were changed" },
105 	{ "tree",	cmd_tree,	usage_tree,
106 	    "list files and directories in repository" },
107 	{ "status",	cmd_status,	usage_status,
108 	    "show modification status of files" },
109 	{ "ref",	cmd_ref,	usage_ref,
110 	    "manage references in repository" },
111 	{ "add",	cmd_add,	usage_add,
112 	    "add a new file to version control" },
113 	{ "rm",		cmd_rm,		usage_rm,
114 	    "remove a versioned file" },
115 };
116 
117 int
118 main(int argc, char *argv[])
119 {
120 	struct cmd *cmd;
121 	unsigned int i;
122 	int ch;
123 	int hflag = 0;
124 
125 	setlocale(LC_CTYPE, "");
126 
127 	while ((ch = getopt(argc, argv, "h")) != -1) {
128 		switch (ch) {
129 		case 'h':
130 			hflag = 1;
131 			break;
132 		default:
133 			usage();
134 			/* NOTREACHED */
135 		}
136 	}
137 
138 	argc -= optind;
139 	argv += optind;
140 	optind = 0;
141 
142 	if (argc <= 0)
143 		usage();
144 
145 	signal(SIGINT, catch_sigint);
146 	signal(SIGPIPE, catch_sigpipe);
147 
148 	for (i = 0; i < nitems(got_commands); i++) {
149 		const struct got_error *error;
150 
151 		cmd = &got_commands[i];
152 
153 		if (strncmp(cmd->cmd_name, argv[0], strlen(argv[0])))
154 			continue;
155 
156 		if (hflag)
157 			got_commands[i].cmd_usage();
158 
159 		error = got_commands[i].cmd_main(argc, argv);
160 		if (error && !(sigint_received || sigpipe_received)) {
161 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
162 			return 1;
163 		}
164 
165 		return 0;
166 	}
167 
168 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
169 	return 1;
170 }
171 
172 __dead static void
173 usage(void)
174 {
175 	int i;
176 
177 	fprintf(stderr, "usage: %s [-h] command [arg ...]\n\n"
178 	    "Available commands:\n", getprogname());
179 	for (i = 0; i < nitems(got_commands); i++) {
180 		struct cmd *cmd = &got_commands[i];
181 		fprintf(stderr, "    %s: %s\n", cmd->cmd_name, cmd->cmd_descr);
182 	}
183 	exit(1);
184 }
185 
186 static const struct got_error *
187 apply_unveil(const char *repo_path, int repo_read_only,
188     const char *worktree_path)
189 {
190 	const struct got_error *error;
191 
192 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
193 		return got_error_from_errno();
194 
195 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
196 		return got_error_from_errno();
197 
198 	if (unveil("/tmp", "rwc") != 0)
199 		return got_error_from_errno();
200 
201 	error = got_privsep_unveil_exec_helpers();
202 	if (error != NULL)
203 		return error;
204 
205 	if (unveil(NULL, NULL) != 0)
206 		return got_error_from_errno();
207 
208 	return NULL;
209 }
210 
211 __dead static void
212 usage_checkout(void)
213 {
214 	fprintf(stderr, "usage: %s checkout [-p prefix] repository-path "
215 	    "[worktree-path]\n", getprogname());
216 	exit(1);
217 }
218 
219 static void
220 checkout_progress(void *arg, unsigned char status, const char *path)
221 {
222 	char *worktree_path = arg;
223 
224 	while (path[0] == '/')
225 		path++;
226 
227 	printf("%c  %s/%s\n", status, worktree_path, path);
228 }
229 
230 static const struct got_error *
231 check_cancelled(void *arg)
232 {
233 	if (sigint_received || sigpipe_received)
234 		return got_error(GOT_ERR_CANCELLED);
235 	return NULL;
236 }
237 
238 static const struct got_error *
239 check_ancestry(struct got_worktree *worktree, struct got_object_id *commit_id,
240     struct got_repository *repo)
241 {
242 	const struct got_error *err;
243 	struct got_reference *head_ref = NULL;
244 	struct got_object_id *head_commit_id = NULL;
245 	struct got_commit_graph *graph = NULL;
246 
247 	head_ref = got_worktree_get_head_ref(worktree);
248 	if (head_ref == NULL)
249 		return got_error_from_errno();
250 
251 	/* TODO: Check the reflog. The head ref may have been rebased. */
252 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
253 	if (err)
254 		goto done;
255 
256 	err = got_commit_graph_open(&graph, head_commit_id, "/", 1, repo);
257 	if (err)
258 		goto done;
259 
260 	err = got_commit_graph_iter_start(graph, head_commit_id, repo);
261 	if (err)
262 		goto done;
263 	while (1) {
264 		struct got_object_id *id;
265 
266 		if (sigint_received || sigpipe_received)
267 			break;
268 
269 		err = got_commit_graph_iter_next(&id, graph);
270 		if (err) {
271 			if (err->code == GOT_ERR_ITER_COMPLETED) {
272 				err = got_error(GOT_ERR_ANCESTRY);
273 				break;
274 			}
275 			if (err->code != GOT_ERR_ITER_NEED_MORE)
276 				break;
277 			err = got_commit_graph_fetch_commits(graph, 1, repo);
278 			if (err)
279 				break;
280 			else
281 				continue;
282 		}
283 		if (id == NULL)
284 			break;
285 		if (got_object_id_cmp(id, commit_id) == 0)
286 			break;
287 	}
288 done:
289 	if (head_ref)
290 		got_ref_close(head_ref);
291 	if (graph)
292 		got_commit_graph_close(graph);
293 	return err;
294 }
295 
296 
297 static const struct got_error *
298 cmd_checkout(int argc, char *argv[])
299 {
300 	const struct got_error *error = NULL;
301 	struct got_repository *repo = NULL;
302 	struct got_reference *head_ref = NULL;
303 	struct got_worktree *worktree = NULL;
304 	char *repo_path = NULL;
305 	char *worktree_path = NULL;
306 	const char *path_prefix = "";
307 	char *commit_id_str = NULL;
308 	int ch, same_path_prefix;
309 
310 	while ((ch = getopt(argc, argv, "c:p:")) != -1) {
311 		switch (ch) {
312 		case 'c':
313 			commit_id_str = strdup(optarg);
314 			if (commit_id_str == NULL)
315 				return got_error_from_errno();
316 			break;
317 		case 'p':
318 			path_prefix = optarg;
319 			break;
320 		default:
321 			usage_checkout();
322 			/* NOTREACHED */
323 		}
324 	}
325 
326 	argc -= optind;
327 	argv += optind;
328 
329 #ifndef PROFILE
330 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
331 	    "unveil", NULL) == -1)
332 		err(1, "pledge");
333 #endif
334 	if (argc == 1) {
335 		char *cwd, *base, *dotgit;
336 		repo_path = realpath(argv[0], NULL);
337 		if (repo_path == NULL)
338 			return got_error_from_errno();
339 		cwd = getcwd(NULL, 0);
340 		if (cwd == NULL) {
341 			error = got_error_from_errno();
342 			goto done;
343 		}
344 		if (path_prefix[0])
345 			base = basename(path_prefix);
346 		else
347 			base = basename(repo_path);
348 		if (base == NULL) {
349 			error = got_error_from_errno();
350 			goto done;
351 		}
352 		dotgit = strstr(base, ".git");
353 		if (dotgit)
354 			*dotgit = '\0';
355 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
356 			error = got_error_from_errno();
357 			free(cwd);
358 			goto done;
359 		}
360 		free(cwd);
361 	} else if (argc == 2) {
362 		repo_path = realpath(argv[0], NULL);
363 		if (repo_path == NULL) {
364 			error = got_error_from_errno();
365 			goto done;
366 		}
367 		worktree_path = realpath(argv[1], NULL);
368 		if (worktree_path == NULL) {
369 			error = got_error_from_errno();
370 			goto done;
371 		}
372 	} else
373 		usage_checkout();
374 
375 	error = apply_unveil(repo_path, 0, worktree_path);
376 	if (error)
377 		goto done;
378 
379 	error = got_repo_open(&repo, repo_path);
380 	if (error != NULL)
381 		goto done;
382 
383 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
384 	if (error != NULL)
385 		goto done;
386 
387 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
388 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
389 		goto done;
390 
391 	error = got_worktree_open(&worktree, worktree_path);
392 	if (error != NULL)
393 		goto done;
394 
395 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
396 	    path_prefix);
397 	if (error != NULL)
398 		goto done;
399 	if (!same_path_prefix) {
400 		error = got_error(GOT_ERR_PATH_PREFIX);
401 		goto done;
402 	}
403 
404 	if (commit_id_str) {
405 		struct got_object_id *commit_id;
406 		error = got_object_resolve_id_str(&commit_id, repo,
407 		    commit_id_str);
408 		if (error != NULL)
409 			goto done;
410 		error = check_ancestry(worktree, commit_id, repo);
411 		if (error != NULL) {
412 			free(commit_id);
413 			goto done;
414 		}
415 		error = got_worktree_set_base_commit_id(worktree, repo,
416 		    commit_id);
417 		free(commit_id);
418 		if (error)
419 			goto done;
420 	}
421 
422 	error = got_worktree_checkout_files(worktree, repo,
423 	    checkout_progress, worktree_path, check_cancelled, NULL);
424 	if (error != NULL)
425 		goto done;
426 
427 	printf("Now shut up and hack\n");
428 
429 done:
430 	free(commit_id_str);
431 	free(repo_path);
432 	free(worktree_path);
433 	return error;
434 }
435 
436 __dead static void
437 usage_update(void)
438 {
439 	fprintf(stderr, "usage: %s update [-c commit] [worktree-path]\n",
440 	    getprogname());
441 	exit(1);
442 }
443 
444 static void
445 update_progress(void *arg, unsigned char status, const char *path)
446 {
447 	int *did_something = arg;
448 
449 	if (status == GOT_STATUS_EXISTS)
450 		return;
451 
452 	*did_something = 1;
453 	while (path[0] == '/')
454 		path++;
455 	printf("%c  %s\n", status, path);
456 }
457 
458 static const struct got_error *
459 cmd_update(int argc, char *argv[])
460 {
461 	const struct got_error *error = NULL;
462 	struct got_repository *repo = NULL;
463 	struct got_worktree *worktree = NULL;
464 	char *worktree_path = NULL;
465 	struct got_object_id *commit_id = NULL;
466 	char *commit_id_str = NULL;
467 	int ch, did_something = 0;
468 
469 	while ((ch = getopt(argc, argv, "c:")) != -1) {
470 		switch (ch) {
471 		case 'c':
472 			commit_id_str = strdup(optarg);
473 			if (commit_id_str == NULL)
474 				return got_error_from_errno();
475 			break;
476 		default:
477 			usage_update();
478 			/* NOTREACHED */
479 		}
480 	}
481 
482 	argc -= optind;
483 	argv += optind;
484 
485 #ifndef PROFILE
486 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
487 	    "unveil", NULL) == -1)
488 		err(1, "pledge");
489 #endif
490 	if (argc == 0) {
491 		worktree_path = getcwd(NULL, 0);
492 		if (worktree_path == NULL) {
493 			error = got_error_from_errno();
494 			goto done;
495 		}
496 	} else if (argc == 1) {
497 		worktree_path = realpath(argv[0], NULL);
498 		if (worktree_path == NULL) {
499 			error = got_error_from_errno();
500 			goto done;
501 		}
502 	} else
503 		usage_update();
504 
505 	error = got_worktree_open(&worktree, worktree_path);
506 	if (error != NULL)
507 		goto done;
508 
509 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree));
510 	if (error != NULL)
511 		goto done;
512 
513 	error = apply_unveil(got_repo_get_path(repo), 0,
514 	    got_worktree_get_root_path(worktree));
515 	if (error)
516 		goto done;
517 
518 	if (commit_id_str == NULL) {
519 		struct got_reference *head_ref;
520 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
521 		if (error != NULL)
522 			goto done;
523 		error = got_ref_resolve(&commit_id, repo, head_ref);
524 		if (error != NULL)
525 			goto done;
526 		error = got_object_id_str(&commit_id_str, commit_id);
527 		if (error != NULL)
528 			goto done;
529 	} else {
530 		error = got_object_resolve_id_str(&commit_id, repo,
531 		    commit_id_str);
532 		if (error != NULL)
533 			goto done;
534 	}
535 
536 	error = check_ancestry(worktree, commit_id, repo);
537 	if (error != NULL)
538 		goto done;
539 
540 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
541 	    commit_id) != 0) {
542 		error = got_worktree_set_base_commit_id(worktree, repo,
543 		    commit_id);
544 		if (error)
545 			goto done;
546 	}
547 
548 	error = got_worktree_checkout_files(worktree, repo,
549 	    update_progress, &did_something, check_cancelled, NULL);
550 	if (error != NULL)
551 		goto done;
552 
553 	if (did_something)
554 		printf("Updated to commit %s\n", commit_id_str);
555 	else
556 		printf("Already up-to-date\n");
557 done:
558 	free(worktree_path);
559 	free(commit_id);
560 	free(commit_id_str);
561 	return error;
562 }
563 
564 static const struct got_error *
565 print_patch(struct got_commit_object *commit, struct got_object_id *id,
566     int diff_context, struct got_repository *repo)
567 {
568 	const struct got_error *err = NULL;
569 	struct got_tree_object *tree1 = NULL, *tree2;
570 	struct got_object_qid *qid;
571 	char *id_str1 = NULL, *id_str2;
572 
573 	err = got_object_open_as_tree(&tree2, repo,
574 	    got_object_commit_get_tree_id(commit));
575 	if (err)
576 		return err;
577 
578 	qid = SIMPLEQ_FIRST(got_object_commit_get_parent_ids(commit));
579 	if (qid != NULL) {
580 		struct got_commit_object *pcommit;
581 
582 		err = got_object_open_as_commit(&pcommit, repo, qid->id);
583 		if (err)
584 			return err;
585 
586 		err = got_object_open_as_tree(&tree1, repo,
587 		    got_object_commit_get_tree_id(pcommit));
588 		got_object_commit_close(pcommit);
589 		if (err)
590 			return err;
591 
592 		err = got_object_id_str(&id_str1, qid->id);
593 		if (err)
594 			return err;
595 	}
596 
597 	err = got_object_id_str(&id_str2, id);
598 	if (err)
599 		goto done;
600 
601 	printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
602 	err = got_diff_tree(tree1, tree2, "", "", diff_context, repo, stdout);
603 done:
604 	if (tree1)
605 		got_object_tree_close(tree1);
606 	got_object_tree_close(tree2);
607 	free(id_str1);
608 	free(id_str2);
609 	return err;
610 }
611 
612 static char *
613 get_datestr(time_t *time, char *datebuf)
614 {
615 	char *p, *s = ctime_r(time, datebuf);
616 	p = strchr(s, '\n');
617 	if (p)
618 		*p = '\0';
619 	return s;
620 }
621 
622 static const struct got_error *
623 print_commit(struct got_commit_object *commit, struct got_object_id *id,
624     struct got_repository *repo, int show_patch, int diff_context,
625     struct got_reflist_head *refs)
626 {
627 	const struct got_error *err = NULL;
628 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
629 	char datebuf[26];
630 	time_t committer_time;
631 	const char *author, *committer;
632 	char *refs_str = NULL;
633 	struct got_reflist_entry *re;
634 
635 	SIMPLEQ_FOREACH(re, refs, entry) {
636 		char *s;
637 		const char *name;
638 		if (got_object_id_cmp(re->id, id) != 0)
639 			continue;
640 		name = got_ref_get_name(re->ref);
641 		if (strcmp(name, GOT_REF_HEAD) == 0)
642 			continue;
643 		if (strncmp(name, "refs/", 5) == 0)
644 			name += 5;
645 		if (strncmp(name, "got/", 4) == 0)
646 			continue;
647 		if (strncmp(name, "heads/", 6) == 0)
648 			name += 6;
649 		if (strncmp(name, "remotes/", 8) == 0)
650 			name += 8;
651 		s = refs_str;
652 		if (asprintf(&refs_str, "%s%s%s", s ? s : "", s ? ", " : "",
653 		    name) == -1) {
654 			err = got_error_from_errno();
655 			free(s);
656 			break;
657 		}
658 		free(s);
659 	}
660 	err = got_object_id_str(&id_str, id);
661 	if (err)
662 		return err;
663 
664 	printf("-----------------------------------------------\n");
665 	printf("commit %s%s%s%s\n", id_str, refs_str ? " (" : "",
666 	    refs_str ? refs_str : "", refs_str ? ")" : "");
667 	free(id_str);
668 	id_str = NULL;
669 	free(refs_str);
670 	refs_str = NULL;
671 	printf("from: %s\n", got_object_commit_get_author(commit));
672 	committer_time = got_object_commit_get_committer_time(commit);
673 	datestr = get_datestr(&committer_time, datebuf);
674 	printf("date: %s UTC\n", datestr);
675 	author = got_object_commit_get_author(commit);
676 	committer = got_object_commit_get_committer(commit);
677 	if (strcmp(author, committer) != 0)
678 		printf("via: %s\n", committer);
679 	if (got_object_commit_get_nparents(commit) > 1) {
680 		const struct got_object_id_queue *parent_ids;
681 		struct got_object_qid *qid;
682 		int n = 1;
683 		parent_ids = got_object_commit_get_parent_ids(commit);
684 		SIMPLEQ_FOREACH(qid, parent_ids, entry) {
685 			err = got_object_id_str(&id_str, qid->id);
686 			if (err)
687 				return err;
688 			printf("parent %d: %s\n", n++, id_str);
689 			free(id_str);
690 		}
691 	}
692 
693 	logmsg0 = strdup(got_object_commit_get_logmsg(commit));
694 	if (logmsg0 == NULL)
695 		return got_error_from_errno();
696 
697 	logmsg = logmsg0;
698 	do {
699 		line = strsep(&logmsg, "\n");
700 		if (line)
701 			printf(" %s\n", line);
702 	} while (line);
703 	free(logmsg0);
704 
705 	if (show_patch) {
706 		err = print_patch(commit, id, diff_context, repo);
707 		if (err == 0)
708 			printf("\n");
709 	}
710 
711 	if (fflush(stdout) != 0 && err == NULL)
712 		err = got_error_from_errno();
713 	return err;
714 }
715 
716 static const struct got_error *
717 print_commits(struct got_object_id *root_id, struct got_repository *repo,
718     char *path, int show_patch, int diff_context, int limit,
719     int first_parent_traversal, struct got_reflist_head *refs)
720 {
721 	const struct got_error *err;
722 	struct got_commit_graph *graph;
723 
724 	err = got_commit_graph_open(&graph, root_id, path,
725 	    first_parent_traversal, repo);
726 	if (err)
727 		return err;
728 	err = got_commit_graph_iter_start(graph, root_id, repo);
729 	if (err)
730 		goto done;
731 	while (1) {
732 		struct got_commit_object *commit;
733 		struct got_object_id *id;
734 
735 		if (sigint_received || sigpipe_received)
736 			break;
737 
738 		err = got_commit_graph_iter_next(&id, graph);
739 		if (err) {
740 			if (err->code == GOT_ERR_ITER_COMPLETED) {
741 				err = NULL;
742 				break;
743 			}
744 			if (err->code != GOT_ERR_ITER_NEED_MORE)
745 				break;
746 			err = got_commit_graph_fetch_commits(graph, 1, repo);
747 			if (err)
748 				break;
749 			else
750 				continue;
751 		}
752 		if (id == NULL)
753 			break;
754 
755 		err = got_object_open_as_commit(&commit, repo, id);
756 		if (err)
757 			break;
758 		err = print_commit(commit, id, repo, show_patch, diff_context,
759 		    refs);
760 		got_object_commit_close(commit);
761 		if (err || (limit && --limit == 0))
762 			break;
763 	}
764 done:
765 	got_commit_graph_close(graph);
766 	return err;
767 }
768 
769 __dead static void
770 usage_log(void)
771 {
772 	fprintf(stderr, "usage: %s log [-c commit] [-C number] [-f] [ -l N ] [-p] "
773 	    "[-r repository-path] [path]\n", getprogname());
774 	exit(1);
775 }
776 
777 static const struct got_error *
778 cmd_log(int argc, char *argv[])
779 {
780 	const struct got_error *error;
781 	struct got_repository *repo = NULL;
782 	struct got_worktree *worktree = NULL;
783 	struct got_commit_object *commit = NULL;
784 	struct got_object_id *id = NULL;
785 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
786 	char *start_commit = NULL;
787 	int diff_context = 3, ch;
788 	int show_patch = 0, limit = 0, first_parent_traversal = 0;
789 	const char *errstr;
790 	struct got_reflist_head refs;
791 
792 	SIMPLEQ_INIT(&refs);
793 
794 #ifndef PROFILE
795 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
796 	    NULL)
797 	    == -1)
798 		err(1, "pledge");
799 #endif
800 
801 	while ((ch = getopt(argc, argv, "pc:C:l:fr:")) != -1) {
802 		switch (ch) {
803 		case 'p':
804 			show_patch = 1;
805 			break;
806 		case 'c':
807 			start_commit = optarg;
808 			break;
809 		case 'C':
810 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
811 			    &errstr);
812 			if (errstr != NULL)
813 				err(1, "-C option %s", errstr);
814 			break;
815 		case 'l':
816 			limit = strtonum(optarg, 1, INT_MAX, &errstr);
817 			if (errstr != NULL)
818 				err(1, "-l option %s", errstr);
819 			break;
820 		case 'f':
821 			first_parent_traversal = 1;
822 			break;
823 		case 'r':
824 			repo_path = realpath(optarg, NULL);
825 			if (repo_path == NULL)
826 				err(1, "-r option");
827 			break;
828 		default:
829 			usage_log();
830 			/* NOTREACHED */
831 		}
832 	}
833 
834 	argc -= optind;
835 	argv += optind;
836 
837 	cwd = getcwd(NULL, 0);
838 	if (cwd == NULL) {
839 		error = got_error_from_errno();
840 		goto done;
841 	}
842 
843 	error = got_worktree_open(&worktree, cwd);
844 	if (error && error->code != GOT_ERR_NOT_WORKTREE)
845 		goto done;
846 	error = NULL;
847 
848 	if (argc == 0) {
849 		path = strdup("");
850 		if (path == NULL) {
851 			error = got_error_from_errno();
852 			goto done;
853 		}
854 	} else if (argc == 1) {
855 		if (worktree) {
856 			error = got_worktree_resolve_path(&path, worktree,
857 			    argv[0]);
858 			if (error)
859 				goto done;
860 		} else {
861 			path = strdup(argv[0]);
862 			if (path == NULL) {
863 				error = got_error_from_errno();
864 				goto done;
865 			}
866 		}
867 	} else
868 		usage_log();
869 
870 	repo_path = worktree ?
871 	    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
872 	if (repo_path == NULL) {
873 		error = got_error_from_errno();
874 		goto done;
875 	}
876 
877 	error = apply_unveil(repo_path, 1,
878 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
879 	if (error)
880 		goto done;
881 
882 	error = got_repo_open(&repo, repo_path);
883 	if (error != NULL)
884 		goto done;
885 
886 	if (start_commit == NULL) {
887 		struct got_reference *head_ref;
888 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
889 		if (error != NULL)
890 			return error;
891 		error = got_ref_resolve(&id, repo, head_ref);
892 		got_ref_close(head_ref);
893 		if (error != NULL)
894 			return error;
895 		error = got_object_open_as_commit(&commit, repo, id);
896 	} else {
897 		struct got_reference *ref;
898 		error = got_ref_open(&ref, repo, start_commit);
899 		if (error == NULL) {
900 			int obj_type;
901 			error = got_ref_resolve(&id, repo, ref);
902 			got_ref_close(ref);
903 			if (error != NULL)
904 				goto done;
905 			error = got_object_get_type(&obj_type, repo, id);
906 			if (error != NULL)
907 				goto done;
908 			if (obj_type == GOT_OBJ_TYPE_TAG) {
909 				struct got_tag_object *tag;
910 				error = got_object_open_as_tag(&tag, repo, id);
911 				if (error != NULL)
912 					goto done;
913 				if (got_object_tag_get_object_type(tag) !=
914 				    GOT_OBJ_TYPE_COMMIT) {
915 					got_object_tag_close(tag);
916 					error = got_error(GOT_ERR_OBJ_TYPE);
917 					goto done;
918 				}
919 				free(id);
920 				id = got_object_id_dup(
921 				    got_object_tag_get_object_id(tag));
922 				if (id == NULL)
923 					error = got_error_from_errno();
924 				got_object_tag_close(tag);
925 				if (error)
926 					goto done;
927 			} else if (obj_type != GOT_OBJ_TYPE_COMMIT) {
928 				error = got_error(GOT_ERR_OBJ_TYPE);
929 				goto done;
930 			}
931 			error = got_object_open_as_commit(&commit, repo, id);
932 			if (error != NULL)
933 				goto done;
934 		}
935 		if (commit == NULL) {
936 			error = got_object_resolve_id_str(&id, repo,
937 			    start_commit);
938 			if (error != NULL)
939 				return error;
940 		}
941 	}
942 	if (error != NULL)
943 		goto done;
944 
945 	error = got_repo_map_path(&in_repo_path, repo, path, 1);
946 	if (error != NULL)
947 		goto done;
948 	if (in_repo_path) {
949 		free(path);
950 		path = in_repo_path;
951 	}
952 
953 	error = got_ref_list(&refs, repo);
954 	if (error)
955 		goto done;
956 
957 	error = print_commits(id, repo, path, show_patch,
958 	    diff_context, limit, first_parent_traversal, &refs);
959 done:
960 	free(path);
961 	free(repo_path);
962 	free(cwd);
963 	free(id);
964 	if (worktree)
965 		got_worktree_close(worktree);
966 	if (repo) {
967 		const struct got_error *repo_error;
968 		repo_error = got_repo_close(repo);
969 		if (error == NULL)
970 			error = repo_error;
971 	}
972 	got_ref_list_free(&refs);
973 	return error;
974 }
975 
976 __dead static void
977 usage_diff(void)
978 {
979 	fprintf(stderr, "usage: %s diff [-C number] [-r repository-path] "
980 	    "[object1 object2 | path]\n", getprogname());
981 	exit(1);
982 }
983 
984 struct print_diff_arg {
985 	struct got_repository *repo;
986 	struct got_worktree *worktree;
987 	int diff_context;
988 	const char *id_str;
989 	int header_shown;
990 };
991 
992 static const struct got_error *
993 print_diff(void *arg, unsigned char status, const char *path,
994     struct got_object_id *id)
995 {
996 	struct print_diff_arg *a = arg;
997 	const struct got_error *err = NULL;
998 	struct got_blob_object *blob1 = NULL;
999 	FILE *f2 = NULL;
1000 	char *abspath = NULL;
1001 	struct stat sb;
1002 
1003 	if (status != GOT_STATUS_MODIFY && status != GOT_STATUS_ADD &&
1004 	    status != GOT_STATUS_DELETE)
1005 		return NULL;
1006 
1007 	if (!a->header_shown) {
1008 		printf("diff %s %s\n", a->id_str,
1009 		    got_worktree_get_root_path(a->worktree));
1010 		a->header_shown = 1;
1011 	}
1012 
1013 	if (status == GOT_STATUS_MODIFY || status == GOT_STATUS_DELETE) {
1014 		err = got_object_open_as_blob(&blob1, a->repo, id, 8192);
1015 		if (err)
1016 			goto done;
1017 
1018 	}
1019 
1020 	if (status == GOT_STATUS_MODIFY || status == GOT_STATUS_ADD) {
1021 		if (asprintf(&abspath, "%s/%s",
1022 		    got_worktree_get_root_path(a->worktree), path) == -1) {
1023 			err = got_error_from_errno();
1024 			goto done;
1025 		}
1026 
1027 		f2 = fopen(abspath, "r");
1028 		if (f2 == NULL) {
1029 			err = got_error_from_errno();
1030 			goto done;
1031 		}
1032 		if (lstat(abspath, &sb) == -1) {
1033 			err = got_error_from_errno();
1034 			goto done;
1035 		}
1036 	} else
1037 		sb.st_size = 0;
1038 
1039 	err = got_diff_blob_file(blob1, f2, sb.st_size, path, a->diff_context,
1040 	    stdout);
1041 done:
1042 	if (blob1)
1043 		got_object_blob_close(blob1);
1044 	if (f2 && fclose(f2) != 0 && err == NULL)
1045 		err = got_error_from_errno();
1046 	free(abspath);
1047 	return err;
1048 }
1049 
1050 static const struct got_error *
1051 cmd_diff(int argc, char *argv[])
1052 {
1053 	const struct got_error *error;
1054 	struct got_repository *repo = NULL;
1055 	struct got_worktree *worktree = NULL;
1056 	char *cwd = NULL, *repo_path = NULL;
1057 	struct got_object_id *id1 = NULL, *id2 = NULL;
1058 	char *id_str1 = NULL, *id_str2 = NULL;
1059 	int type1, type2;
1060 	int diff_context = 3, ch;
1061 	const char *errstr;
1062 	char *path = NULL;
1063 
1064 #ifndef PROFILE
1065 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
1066 	    NULL) == -1)
1067 		err(1, "pledge");
1068 #endif
1069 
1070 	while ((ch = getopt(argc, argv, "C:r:")) != -1) {
1071 		switch (ch) {
1072 		case 'C':
1073 			diff_context = strtonum(optarg, 1, INT_MAX, &errstr);
1074 			if (errstr != NULL)
1075 				err(1, "-C option %s", errstr);
1076 			break;
1077 		case 'r':
1078 			repo_path = realpath(optarg, NULL);
1079 			if (repo_path == NULL)
1080 				err(1, "-r option");
1081 			break;
1082 		default:
1083 			usage_diff();
1084 			/* NOTREACHED */
1085 		}
1086 	}
1087 
1088 	argc -= optind;
1089 	argv += optind;
1090 
1091 	cwd = getcwd(NULL, 0);
1092 	if (cwd == NULL) {
1093 		error = got_error_from_errno();
1094 		goto done;
1095 	}
1096 	error = got_worktree_open(&worktree, cwd);
1097 	if (error && error->code != GOT_ERR_NOT_WORKTREE)
1098 		goto done;
1099 	if (argc <= 1) {
1100 		if (worktree == NULL) {
1101 			error = got_error(GOT_ERR_NOT_WORKTREE);
1102 			goto done;
1103 		}
1104 		if (repo_path)
1105 			errx(1,
1106 			    "-r option can't be used when diffing a work tree");
1107 		repo_path = strdup(got_worktree_get_repo_path(worktree));
1108 		if (repo_path == NULL) {
1109 			error = got_error_from_errno();
1110 			goto done;
1111 		}
1112 		if (argc == 1) {
1113 			error = got_worktree_resolve_path(&path, worktree,
1114 			    argv[0]);
1115 			if (error)
1116 				goto done;
1117 		} else {
1118 			path = strdup("");
1119 			if (path == NULL) {
1120 				error = got_error_from_errno();
1121 				goto done;
1122 			}
1123 		}
1124 	} else if (argc == 2) {
1125 		id_str1 = argv[0];
1126 		id_str2 = argv[1];
1127 	} else
1128 		usage_diff();
1129 
1130 	if (repo_path == NULL) {
1131 		repo_path = getcwd(NULL, 0);
1132 		if (repo_path == NULL)
1133 			return got_error_from_errno();
1134 	}
1135 
1136 	error = apply_unveil(repo_path, 1,
1137 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
1138 	if (error)
1139 		goto done;
1140 
1141 	error = got_repo_open(&repo, repo_path);
1142 	free(repo_path);
1143 	if (error != NULL)
1144 		goto done;
1145 
1146 	if (worktree) {
1147 		struct print_diff_arg arg;
1148 		char *id_str;
1149 		error = got_object_id_str(&id_str,
1150 		    got_worktree_get_base_commit_id(worktree));
1151 		if (error)
1152 			goto done;
1153 		arg.repo = repo;
1154 		arg.worktree = worktree;
1155 		arg.diff_context = diff_context;
1156 		arg.id_str = id_str;
1157 		arg.header_shown = 0;
1158 
1159 		error = got_worktree_status(worktree, path, repo, print_diff,
1160 		    &arg, check_cancelled, NULL);
1161 		free(id_str);
1162 		goto done;
1163 	}
1164 
1165 	error = got_object_resolve_id_str(&id1, repo, id_str1);
1166 	if (error)
1167 		goto done;
1168 
1169 	error = got_object_resolve_id_str(&id2, repo, id_str2);
1170 	if (error)
1171 		goto done;
1172 
1173 	error = got_object_get_type(&type1, repo, id1);
1174 	if (error)
1175 		goto done;
1176 
1177 	error = got_object_get_type(&type2, repo, id2);
1178 	if (error)
1179 		goto done;
1180 
1181 	if (type1 != type2) {
1182 		error = got_error(GOT_ERR_OBJ_TYPE);
1183 		goto done;
1184 	}
1185 
1186 	switch (type1) {
1187 	case GOT_OBJ_TYPE_BLOB:
1188 		error = got_diff_objects_as_blobs(id1, id2, NULL, NULL,
1189 		    diff_context, repo, stdout);
1190 		break;
1191 	case GOT_OBJ_TYPE_TREE:
1192 		error = got_diff_objects_as_trees(id1, id2, "", "",
1193 		    diff_context, repo, stdout);
1194 		break;
1195 	case GOT_OBJ_TYPE_COMMIT:
1196 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null",
1197 		    id_str2);
1198 		error = got_diff_objects_as_commits(id1, id2, diff_context,
1199 		    repo, stdout);
1200 		break;
1201 	default:
1202 		error = got_error(GOT_ERR_OBJ_TYPE);
1203 	}
1204 
1205 done:
1206 	free(id1);
1207 	free(id2);
1208 	free(path);
1209 	if (worktree)
1210 		got_worktree_close(worktree);
1211 	if (repo) {
1212 		const struct got_error *repo_error;
1213 		repo_error = got_repo_close(repo);
1214 		if (error == NULL)
1215 			error = repo_error;
1216 	}
1217 	return error;
1218 }
1219 
1220 __dead static void
1221 usage_blame(void)
1222 {
1223 	fprintf(stderr,
1224 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
1225 	    getprogname());
1226 	exit(1);
1227 }
1228 
1229 static const struct got_error *
1230 cmd_blame(int argc, char *argv[])
1231 {
1232 	const struct got_error *error;
1233 	struct got_repository *repo = NULL;
1234 	struct got_worktree *worktree = NULL;
1235 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
1236 	struct got_object_id *commit_id = NULL;
1237 	char *commit_id_str = NULL;
1238 	int ch;
1239 
1240 #ifndef PROFILE
1241 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
1242 	    NULL) == -1)
1243 		err(1, "pledge");
1244 #endif
1245 
1246 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
1247 		switch (ch) {
1248 		case 'c':
1249 			commit_id_str = optarg;
1250 			break;
1251 		case 'r':
1252 			repo_path = realpath(optarg, NULL);
1253 			if (repo_path == NULL)
1254 				err(1, "-r option");
1255 			break;
1256 		default:
1257 			usage_blame();
1258 			/* NOTREACHED */
1259 		}
1260 	}
1261 
1262 	argc -= optind;
1263 	argv += optind;
1264 
1265 	if (argc == 1)
1266 		path = argv[0];
1267 	else
1268 		usage_blame();
1269 
1270 	cwd = getcwd(NULL, 0);
1271 	if (cwd == NULL) {
1272 		error = got_error_from_errno();
1273 		goto done;
1274 	}
1275 	if (repo_path == NULL) {
1276 		error = got_worktree_open(&worktree, cwd);
1277 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
1278 			goto done;
1279 		else
1280 			error = NULL;
1281 		if (worktree) {
1282 			repo_path =
1283 			    strdup(got_worktree_get_repo_path(worktree));
1284 			if (repo_path == NULL)
1285 				error = got_error_from_errno();
1286 			if (error)
1287 				goto done;
1288 		} else {
1289 			repo_path = strdup(cwd);
1290 			if (repo_path == NULL) {
1291 				error = got_error_from_errno();
1292 				goto done;
1293 			}
1294 		}
1295 	}
1296 
1297 	error = apply_unveil(repo_path, 1, NULL);
1298 	if (error)
1299 		goto done;
1300 
1301 	error = got_repo_open(&repo, repo_path);
1302 	if (error != NULL)
1303 		goto done;
1304 
1305 	if (worktree) {
1306 		const char *prefix = got_worktree_get_path_prefix(worktree);
1307 		char *p, *worktree_subdir = cwd +
1308 		    strlen(got_worktree_get_root_path(worktree));
1309 		if (asprintf(&p, "%s%s%s%s%s",
1310 		    prefix, (strcmp(prefix, "/") != 0) ? "/" : "",
1311 		    worktree_subdir, worktree_subdir[0] ? "/" : "",
1312 		    path) == -1) {
1313 			error = got_error_from_errno();
1314 			goto done;
1315 		}
1316 		error = got_repo_map_path(&in_repo_path, repo, p, 0);
1317 		free(p);
1318 	} else {
1319 		error = got_repo_map_path(&in_repo_path, repo, path, 1);
1320 	}
1321 	if (error)
1322 		goto done;
1323 
1324 	if (commit_id_str == NULL) {
1325 		struct got_reference *head_ref;
1326 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
1327 		if (error != NULL)
1328 			goto done;
1329 		error = got_ref_resolve(&commit_id, repo, head_ref);
1330 		got_ref_close(head_ref);
1331 		if (error != NULL)
1332 			goto done;
1333 	} else {
1334 		error = got_object_resolve_id_str(&commit_id, repo,
1335 		    commit_id_str);
1336 		if (error != NULL)
1337 			goto done;
1338 	}
1339 
1340 	error = got_blame(in_repo_path, commit_id, repo, stdout);
1341 done:
1342 	free(in_repo_path);
1343 	free(repo_path);
1344 	free(cwd);
1345 	free(commit_id);
1346 	if (worktree)
1347 		got_worktree_close(worktree);
1348 	if (repo) {
1349 		const struct got_error *repo_error;
1350 		repo_error = got_repo_close(repo);
1351 		if (error == NULL)
1352 			error = repo_error;
1353 	}
1354 	return error;
1355 }
1356 
1357 __dead static void
1358 usage_tree(void)
1359 {
1360 	fprintf(stderr,
1361 	    "usage: %s tree [-c commit] [-r repository-path] [-iR] path\n",
1362 	    getprogname());
1363 	exit(1);
1364 }
1365 
1366 static void
1367 print_entry(struct got_tree_entry *te, const char *id, const char *path,
1368     const char *root_path)
1369 {
1370 	int is_root_path = (strcmp(path, root_path) == 0);
1371 
1372 	path += strlen(root_path);
1373 	while (path[0] == '/')
1374 		path++;
1375 
1376 	printf("%s%s%s%s%s\n", id ? id : "", path,
1377 	    is_root_path ? "" : "/", te->name,
1378 	    S_ISDIR(te->mode) ? "/" : ((te->mode & S_IXUSR) ? "*" : ""));
1379 }
1380 
1381 static const struct got_error *
1382 print_tree(const char *path, struct got_object_id *commit_id,
1383     int show_ids, int recurse, const char *root_path,
1384     struct got_repository *repo)
1385 {
1386 	const struct got_error *err = NULL;
1387 	struct got_object_id *tree_id = NULL;
1388 	struct got_tree_object *tree = NULL;
1389 	const struct got_tree_entries *entries;
1390 	struct got_tree_entry *te;
1391 
1392 	err = got_object_id_by_path(&tree_id, repo, commit_id, path);
1393 	if (err)
1394 		goto done;
1395 
1396 	err = got_object_open_as_tree(&tree, repo, tree_id);
1397 	if (err)
1398 		goto done;
1399 	entries = got_object_tree_get_entries(tree);
1400 	te = SIMPLEQ_FIRST(&entries->head);
1401 	while (te) {
1402 		char *id = NULL;
1403 
1404 		if (sigint_received || sigpipe_received)
1405 			break;
1406 
1407 		if (show_ids) {
1408 			char *id_str;
1409 			err = got_object_id_str(&id_str, te->id);
1410 			if (err)
1411 				goto done;
1412 			if (asprintf(&id, "%s ", id_str) == -1) {
1413 				err = got_error_from_errno();
1414 				free(id_str);
1415 				goto done;
1416 			}
1417 			free(id_str);
1418 		}
1419 		print_entry(te, id, path, root_path);
1420 		free(id);
1421 
1422 		if (recurse && S_ISDIR(te->mode)) {
1423 			char *child_path;
1424 			if (asprintf(&child_path, "%s%s%s", path,
1425 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
1426 			    te->name) == -1) {
1427 				err = got_error_from_errno();
1428 				goto done;
1429 			}
1430 			err = print_tree(child_path, commit_id, show_ids, 1,
1431 			    root_path, repo);
1432 			free(child_path);
1433 			if (err)
1434 				goto done;
1435 		}
1436 
1437 		te = SIMPLEQ_NEXT(te, entry);
1438 	}
1439 done:
1440 	if (tree)
1441 		got_object_tree_close(tree);
1442 	free(tree_id);
1443 	return err;
1444 }
1445 
1446 static const struct got_error *
1447 cmd_tree(int argc, char *argv[])
1448 {
1449 	const struct got_error *error;
1450 	struct got_repository *repo = NULL;
1451 	struct got_worktree *worktree = NULL;
1452 	const char *path;
1453 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
1454 	struct got_object_id *commit_id = NULL;
1455 	char *commit_id_str = NULL;
1456 	int show_ids = 0, recurse = 0;
1457 	int ch;
1458 
1459 #ifndef PROFILE
1460 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
1461 	    NULL) == -1)
1462 		err(1, "pledge");
1463 #endif
1464 
1465 	while ((ch = getopt(argc, argv, "c:r:iR")) != -1) {
1466 		switch (ch) {
1467 		case 'c':
1468 			commit_id_str = optarg;
1469 			break;
1470 		case 'r':
1471 			repo_path = realpath(optarg, NULL);
1472 			if (repo_path == NULL)
1473 				err(1, "-r option");
1474 			break;
1475 		case 'i':
1476 			show_ids = 1;
1477 			break;
1478 		case 'R':
1479 			recurse = 1;
1480 			break;
1481 		default:
1482 			usage_tree();
1483 			/* NOTREACHED */
1484 		}
1485 	}
1486 
1487 	argc -= optind;
1488 	argv += optind;
1489 
1490 	if (argc == 1)
1491 		path = argv[0];
1492 	else if (argc > 1)
1493 		usage_tree();
1494 	else
1495 		path = NULL;
1496 
1497 	cwd = getcwd(NULL, 0);
1498 	if (cwd == NULL) {
1499 		error = got_error_from_errno();
1500 		goto done;
1501 	}
1502 	if (repo_path == NULL) {
1503 		error = got_worktree_open(&worktree, cwd);
1504 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
1505 			goto done;
1506 		else
1507 			error = NULL;
1508 		if (worktree) {
1509 			repo_path =
1510 			    strdup(got_worktree_get_repo_path(worktree));
1511 			if (repo_path == NULL)
1512 				error = got_error_from_errno();
1513 			if (error)
1514 				goto done;
1515 		} else {
1516 			repo_path = strdup(cwd);
1517 			if (repo_path == NULL) {
1518 				error = got_error_from_errno();
1519 				goto done;
1520 			}
1521 		}
1522 	}
1523 
1524 	error = apply_unveil(repo_path, 1, NULL);
1525 	if (error)
1526 		goto done;
1527 
1528 	error = got_repo_open(&repo, repo_path);
1529 	if (error != NULL)
1530 		goto done;
1531 
1532 	if (path == NULL) {
1533 		if (worktree) {
1534 			char *p, *worktree_subdir = cwd +
1535 			    strlen(got_worktree_get_root_path(worktree));
1536 			if (asprintf(&p, "%s/%s",
1537 			    got_worktree_get_path_prefix(worktree),
1538 			    worktree_subdir) == -1) {
1539 				error = got_error_from_errno();
1540 				goto done;
1541 			}
1542 			error = got_repo_map_path(&in_repo_path, repo, p, 1);
1543 			free(p);
1544 			if (error)
1545 				goto done;
1546 		} else
1547 			path = "/";
1548 	}
1549 	if (in_repo_path == NULL) {
1550 		error = got_repo_map_path(&in_repo_path, repo, path, 1);
1551 		if (error != NULL)
1552 			goto done;
1553 	}
1554 
1555 	if (commit_id_str == NULL) {
1556 		struct got_reference *head_ref;
1557 		error = got_ref_open(&head_ref, repo, GOT_REF_HEAD);
1558 		if (error != NULL)
1559 			goto done;
1560 		error = got_ref_resolve(&commit_id, repo, head_ref);
1561 		got_ref_close(head_ref);
1562 		if (error != NULL)
1563 			goto done;
1564 	} else {
1565 		error = got_object_resolve_id_str(&commit_id, repo,
1566 		    commit_id_str);
1567 		if (error != NULL)
1568 			goto done;
1569 	}
1570 
1571 	error = print_tree(in_repo_path, commit_id, show_ids, recurse,
1572 	    in_repo_path, repo);
1573 done:
1574 	free(in_repo_path);
1575 	free(repo_path);
1576 	free(cwd);
1577 	free(commit_id);
1578 	if (worktree)
1579 		got_worktree_close(worktree);
1580 	if (repo) {
1581 		const struct got_error *repo_error;
1582 		repo_error = got_repo_close(repo);
1583 		if (error == NULL)
1584 			error = repo_error;
1585 	}
1586 	return error;
1587 }
1588 
1589 __dead static void
1590 usage_status(void)
1591 {
1592 	fprintf(stderr, "usage: %s status [path]\n", getprogname());
1593 	exit(1);
1594 }
1595 
1596 static const struct got_error *
1597 print_status(void *arg, unsigned char status, const char *path,
1598     struct got_object_id *id)
1599 {
1600 	printf("%c  %s\n", status, path);
1601 	return NULL;
1602 }
1603 
1604 static const struct got_error *
1605 cmd_status(int argc, char *argv[])
1606 {
1607 	const struct got_error *error = NULL;
1608 	struct got_repository *repo = NULL;
1609 	struct got_worktree *worktree = NULL;
1610 	char *cwd = NULL, *path = NULL;
1611 	int ch;
1612 
1613 	while ((ch = getopt(argc, argv, "")) != -1) {
1614 		switch (ch) {
1615 		default:
1616 			usage_status();
1617 			/* NOTREACHED */
1618 		}
1619 	}
1620 
1621 	argc -= optind;
1622 	argv += optind;
1623 
1624 #ifndef PROFILE
1625 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
1626 	    NULL) == -1)
1627 		err(1, "pledge");
1628 #endif
1629 	cwd = getcwd(NULL, 0);
1630 	if (cwd == NULL) {
1631 		error = got_error_from_errno();
1632 		goto done;
1633 	}
1634 
1635 	error = got_worktree_open(&worktree, cwd);
1636 	if (error != NULL)
1637 		goto done;
1638 
1639 	if (argc == 0) {
1640 		path = strdup("");
1641 		if (path == NULL) {
1642 			error = got_error_from_errno();
1643 			goto done;
1644 		}
1645 	} else if (argc == 1) {
1646 		error = got_worktree_resolve_path(&path, worktree, argv[0]);
1647 		if (error)
1648 			goto done;
1649 	} else
1650 		usage_status();
1651 
1652 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree));
1653 	if (error != NULL)
1654 		goto done;
1655 
1656 	error = apply_unveil(got_repo_get_path(repo), 1,
1657 	    got_worktree_get_root_path(worktree));
1658 	if (error)
1659 		goto done;
1660 
1661 	error = got_worktree_status(worktree, path, repo, print_status, NULL,
1662 	    check_cancelled, NULL);
1663 done:
1664 	free(cwd);
1665 	free(path);
1666 	return error;
1667 }
1668 
1669 __dead static void
1670 usage_ref(void)
1671 {
1672 	fprintf(stderr,
1673 	    "usage: %s ref [-r repository] -l | -d name | name object\n",
1674 	    getprogname());
1675 	exit(1);
1676 }
1677 
1678 static const struct got_error *
1679 list_refs(struct got_repository *repo)
1680 {
1681 	static const struct got_error *err = NULL;
1682 	struct got_reflist_head refs;
1683 	struct got_reflist_entry *re;
1684 
1685 	SIMPLEQ_INIT(&refs);
1686 	err = got_ref_list(&refs, repo);
1687 	if (err)
1688 		return err;
1689 
1690 	SIMPLEQ_FOREACH(re, &refs, entry) {
1691 		char *refstr;
1692 		refstr = got_ref_to_str(re->ref);
1693 		if (refstr == NULL)
1694 			return got_error_from_errno();
1695 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
1696 		free(refstr);
1697 	}
1698 
1699 	got_ref_list_free(&refs);
1700 	return NULL;
1701 }
1702 
1703 static const struct got_error *
1704 delete_ref(struct got_repository *repo, const char *refname)
1705 {
1706 	const struct got_error *err = NULL;
1707 	struct got_reference *ref;
1708 
1709 	err = got_ref_open(&ref, repo, refname);
1710 	if (err)
1711 		return err;
1712 
1713 	err = got_ref_delete(ref, repo);
1714 	got_ref_close(ref);
1715 	return err;
1716 }
1717 
1718 static const struct got_error *
1719 add_ref(struct got_repository *repo, const char *refname, const char *id_str)
1720 {
1721 	const struct got_error *err = NULL;
1722 	struct got_object_id *id;
1723 	struct got_reference *ref = NULL;
1724 
1725 	err = got_object_resolve_id_str(&id, repo, id_str);
1726 	if (err)
1727 		return err;
1728 
1729 	err = got_ref_alloc(&ref, refname, id);
1730 	if (err)
1731 		goto done;
1732 
1733 	err = got_ref_write(ref, repo);
1734 done:
1735 	if (ref)
1736 		got_ref_close(ref);
1737 	free(id);
1738 	return err;
1739 }
1740 
1741 static const struct got_error *
1742 cmd_ref(int argc, char *argv[])
1743 {
1744 	const struct got_error *error = NULL;
1745 	struct got_repository *repo = NULL;
1746 	struct got_worktree *worktree = NULL;
1747 	char *cwd = NULL, *repo_path = NULL;
1748 	int ch, do_list = 0;
1749 	const char *delref = NULL;
1750 
1751 	/* TODO: Add -s option for adding symbolic references. */
1752 	while ((ch = getopt(argc, argv, "d:r:l")) != -1) {
1753 		switch (ch) {
1754 		case 'd':
1755 			delref = optarg;
1756 			break;
1757 		case 'r':
1758 			repo_path = realpath(optarg, NULL);
1759 			if (repo_path == NULL)
1760 				err(1, "-r option");
1761 			break;
1762 		case 'l':
1763 			do_list = 1;
1764 			break;
1765 		default:
1766 			usage_ref();
1767 			/* NOTREACHED */
1768 		}
1769 	}
1770 
1771 	if (do_list && delref)
1772 		errx(1, "-l and -d options are mutually exclusive\n");
1773 
1774 	argc -= optind;
1775 	argv += optind;
1776 
1777 	if (do_list || delref) {
1778 		if (argc > 0)
1779 			usage_ref();
1780 	} else if (argc != 2)
1781 		usage_ref();
1782 
1783 #ifndef PROFILE
1784 	if (do_list) {
1785 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
1786 		    NULL) == -1)
1787 			err(1, "pledge");
1788 	} else {
1789 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1790 		    "sendfd unveil", NULL) == -1)
1791 			err(1, "pledge");
1792 	}
1793 #endif
1794 	cwd = getcwd(NULL, 0);
1795 	if (cwd == NULL) {
1796 		error = got_error_from_errno();
1797 		goto done;
1798 	}
1799 
1800 	if (repo_path == NULL) {
1801 		error = got_worktree_open(&worktree, cwd);
1802 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
1803 			goto done;
1804 		else
1805 			error = NULL;
1806 		if (worktree) {
1807 			repo_path =
1808 			    strdup(got_worktree_get_repo_path(worktree));
1809 			if (repo_path == NULL)
1810 				error = got_error_from_errno();
1811 			if (error)
1812 				goto done;
1813 		} else {
1814 			repo_path = strdup(cwd);
1815 			if (repo_path == NULL) {
1816 				error = got_error_from_errno();
1817 				goto done;
1818 			}
1819 		}
1820 	}
1821 
1822 	error = apply_unveil(repo_path, do_list,
1823 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
1824 	if (error)
1825 		goto done;
1826 
1827 	error = got_repo_open(&repo, repo_path);
1828 	if (error != NULL)
1829 		goto done;
1830 
1831 	if (do_list)
1832 		error = list_refs(repo);
1833 	else if (delref)
1834 		error = delete_ref(repo, delref);
1835 	else
1836 		error = add_ref(repo, argv[0], argv[1]);
1837 done:
1838 	if (repo)
1839 		got_repo_close(repo);
1840 	if (worktree)
1841 		got_worktree_close(worktree);
1842 	free(cwd);
1843 	free(repo_path);
1844 	return error;
1845 }
1846 
1847 __dead static void
1848 usage_add(void)
1849 {
1850 	fprintf(stderr, "usage: %s add file-path\n", getprogname());
1851 	exit(1);
1852 }
1853 
1854 static const struct got_error *
1855 cmd_add(int argc, char *argv[])
1856 {
1857 	const struct got_error *error = NULL;
1858 	struct got_worktree *worktree = NULL;
1859 	char *cwd = NULL, *path = NULL, *relpath = NULL;
1860 	int ch;
1861 
1862 	while ((ch = getopt(argc, argv, "")) != -1) {
1863 		switch (ch) {
1864 		default:
1865 			usage_add();
1866 			/* NOTREACHED */
1867 		}
1868 	}
1869 
1870 	argc -= optind;
1871 	argv += optind;
1872 
1873 	if (argc != 1)
1874 		usage_add();
1875 
1876 	path = realpath(argv[0], NULL);
1877 	if (path == NULL) {
1878 		error = got_error_from_errno();
1879 		goto done;
1880 	}
1881 
1882 	cwd = getcwd(NULL, 0);
1883 	if (cwd == NULL) {
1884 		error = got_error_from_errno();
1885 		goto done;
1886 	}
1887 	error = got_worktree_open(&worktree, cwd);
1888 	if (error)
1889 		goto done;
1890 
1891 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
1892 	if (error)
1893 		goto done;
1894 
1895 	error = got_worktree_schedule_add(&relpath, worktree, path);
1896 	if (error)
1897 		goto done;
1898 	printf("%c  %s\n", GOT_STATUS_ADD, relpath);
1899 done:
1900 	if (worktree)
1901 		got_worktree_close(worktree);
1902 	free(path);
1903 	free(relpath);
1904 	free(cwd);
1905 	return error;
1906 }
1907 
1908 __dead static void
1909 usage_rm(void)
1910 {
1911 	fprintf(stderr, "usage: %s rm [-f] file-path\n", getprogname());
1912 	exit(1);
1913 }
1914 
1915 static const struct got_error *
1916 cmd_rm(int argc, char *argv[])
1917 {
1918 	const struct got_error *error = NULL;
1919 	struct got_worktree *worktree = NULL;
1920 	struct got_repository *repo = NULL;
1921 	char *cwd = NULL, *path = NULL;
1922 	int ch, delete_local_mods = 0;
1923 
1924 	while ((ch = getopt(argc, argv, "f")) != -1) {
1925 		switch (ch) {
1926 		case 'f':
1927 			delete_local_mods = 1;
1928 			break;
1929 		default:
1930 			usage_add();
1931 			/* NOTREACHED */
1932 		}
1933 	}
1934 
1935 	argc -= optind;
1936 	argv += optind;
1937 
1938 	if (argc != 1)
1939 		usage_rm();
1940 
1941 	path = realpath(argv[0], NULL);
1942 	if (path == NULL) {
1943 		error = got_error_from_errno();
1944 		goto done;
1945 	}
1946 
1947 	cwd = getcwd(NULL, 0);
1948 	if (cwd == NULL) {
1949 		error = got_error_from_errno();
1950 		goto done;
1951 	}
1952 	error = got_worktree_open(&worktree, cwd);
1953 	if (error)
1954 		goto done;
1955 
1956 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree));
1957 	if (error != NULL)
1958 		goto done;
1959 
1960 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
1961 	if (error)
1962 		goto done;
1963 
1964 	error = got_worktree_schedule_delete(worktree, path, delete_local_mods,
1965 	    print_status, NULL, repo);
1966 	if (error)
1967 		goto done;
1968 done:
1969 	if (repo)
1970 		got_repo_close(repo);
1971 	if (worktree)
1972 		got_worktree_close(worktree);
1973 	free(path);
1974 	free(cwd);
1975 	return error;
1976 }