1 /*
2  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <sys/types.h>
18 #include <sys/queue.h>
19 #include <sys/tree.h>
20 #include <sys/uio.h>
21 #include <sys/socket.h>
22 #include <sys/stat.h>
23 #include <sys/mman.h>
24 #include <sys/resource.h>
25 
26 #include <ctype.h>
27 #include <endian.h>
28 #include <fcntl.h>
29 #include <fnmatch.h>
30 #include <limits.h>
31 #include <dirent.h>
32 #include <stdlib.h>
33 #include <stdio.h>
34 #include <sha1.h>
35 #include <string.h>
36 #include <time.h>
37 #include <unistd.h>
38 #include <zlib.h>
39 #include <errno.h>
40 #include <libgen.h>
41 #include <stdint.h>
42 #include <imsg.h>
43 #include <uuid.h>
44 
45 #include "bloom.h"
46 
47 #include "got_error.h"
48 #include "got_reference.h"
49 #include "got_repository.h"
50 #include "got_path.h"
51 #include "got_cancel.h"
52 #include "got_object.h"
53 
54 #include "got_lib_delta.h"
55 #include "got_lib_inflate.h"
56 #include "got_lib_object.h"
57 #include "got_lib_object_parse.h"
58 #include "got_lib_object_create.h"
59 #include "got_lib_pack.h"
60 #include "got_lib_privsep.h"
61 #include "got_lib_sha1.h"
62 #include "got_lib_object_cache.h"
63 #include "got_lib_repository.h"
64 #include "got_lib_gotconfig.h"
65 
66 #ifndef nitems
67 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
68 #endif
69 
70 RB_PROTOTYPE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
71     got_packidx_bloom_filter_cmp);
72 
73 const char *
74 got_repo_get_path(struct got_repository *repo)
75 {
76 	return repo->path;
77 }
78 
79 const char *
80 got_repo_get_path_git_dir(struct got_repository *repo)
81 {
82 	return repo->path_git_dir;
83 }
84 
85 int
86 got_repo_get_fd(struct got_repository *repo)
87 {
88 	return repo->gitdir_fd;
89 }
90 
91 const char *
92 got_repo_get_gitconfig_author_name(struct got_repository *repo)
93 {
94 	return repo->gitconfig_author_name;
95 }
96 
97 const char *
98 got_repo_get_gitconfig_author_email(struct got_repository *repo)
99 {
100 	return repo->gitconfig_author_email;
101 }
102 
103 const char *
104 got_repo_get_global_gitconfig_author_name(struct got_repository *repo)
105 {
106 	return repo->global_gitconfig_author_name;
107 }
108 
109 const char *
110 got_repo_get_global_gitconfig_author_email(struct got_repository *repo)
111 {
112 	return repo->global_gitconfig_author_email;
113 }
114 
115 const char *
116 got_repo_get_gitconfig_owner(struct got_repository *repo)
117 {
118 	return repo->gitconfig_owner;
119 }
120 
121 void
122 got_repo_get_gitconfig_extensions(char ***extensions, int *nextensions,
123     struct got_repository *repo)
124 {
125 	*extensions = repo->extensions;
126 	*nextensions = repo->nextensions;
127 }
128 
129 int
130 got_repo_is_bare(struct got_repository *repo)
131 {
132 	return (strcmp(repo->path, repo->path_git_dir) == 0);
133 }
134 
135 static char *
136 get_path_git_child(struct got_repository *repo, const char *basename)
137 {
138 	char *path_child;
139 
140 	if (asprintf(&path_child, "%s/%s", repo->path_git_dir,
141 	    basename) == -1)
142 		return NULL;
143 
144 	return path_child;
145 }
146 
147 char *
148 got_repo_get_path_objects(struct got_repository *repo)
149 {
150 	return get_path_git_child(repo, GOT_OBJECTS_DIR);
151 }
152 
153 char *
154 got_repo_get_path_objects_pack(struct got_repository *repo)
155 {
156 	return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR);
157 }
158 
159 char *
160 got_repo_get_path_refs(struct got_repository *repo)
161 {
162 	return get_path_git_child(repo, GOT_REFS_DIR);
163 }
164 
165 char *
166 got_repo_get_path_packed_refs(struct got_repository *repo)
167 {
168 	return get_path_git_child(repo, GOT_PACKED_REFS_FILE);
169 }
170 
171 static char *
172 get_path_head(struct got_repository *repo)
173 {
174 	return get_path_git_child(repo, GOT_HEAD_FILE);
175 }
176 
177 char *
178 got_repo_get_path_gitconfig(struct got_repository *repo)
179 {
180 	return get_path_git_child(repo, GOT_GITCONFIG);
181 }
182 
183 char *
184 got_repo_get_path_gotconfig(struct got_repository *repo)
185 {
186 	return get_path_git_child(repo, GOT_GOTCONFIG_FILENAME);
187 }
188 
189 const struct got_gotconfig *
190 got_repo_get_gotconfig(struct got_repository *repo)
191 {
192 	return repo->gotconfig;
193 }
194 
195 void
196 got_repo_get_gitconfig_remotes(int *nremotes,
197     const struct got_remote_repo **remotes, struct got_repository *repo)
198 {
199 	*nremotes = repo->ngitconfig_remotes;
200 	*remotes = repo->gitconfig_remotes;
201 }
202 
203 static int
204 is_git_repo(struct got_repository *repo)
205 {
206 	const char *path_git = got_repo_get_path_git_dir(repo);
207 	char *path_objects = got_repo_get_path_objects(repo);
208 	char *path_refs = got_repo_get_path_refs(repo);
209 	char *path_head = get_path_head(repo);
210 	int ret = 0;
211 	struct stat sb;
212 	struct got_reference *head_ref;
213 
214 	if (lstat(path_git, &sb) == -1)
215 		goto done;
216 	if (!S_ISDIR(sb.st_mode))
217 		goto done;
218 
219 	if (lstat(path_objects, &sb) == -1)
220 		goto done;
221 	if (!S_ISDIR(sb.st_mode))
222 		goto done;
223 
224 	if (lstat(path_refs, &sb) == -1)
225 		goto done;
226 	if (!S_ISDIR(sb.st_mode))
227 		goto done;
228 
229 	if (lstat(path_head, &sb) == -1)
230 		goto done;
231 	if (!S_ISREG(sb.st_mode))
232 		goto done;
233 
234 	/* Check if the HEAD reference can be opened. */
235 	if (got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0) != NULL)
236 		goto done;
237 	got_ref_close(head_ref);
238 
239 	ret = 1;
240 done:
241 	free(path_objects);
242 	free(path_refs);
243 	free(path_head);
244 	return ret;
245 
246 }
247 
248 const struct got_error *
249 got_repo_cache_object(struct got_repository *repo, struct got_object_id *id,
250     struct got_object *obj)
251 {
252 #ifndef GOT_NO_OBJ_CACHE
253 	const struct got_error *err = NULL;
254 	err = got_object_cache_add(&repo->objcache, id, obj);
255 	if (err) {
256 		if (err->code == GOT_ERR_OBJ_EXISTS ||
257 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
258 			err = NULL;
259 		return err;
260 	}
261 	obj->refcnt++;
262 #endif
263 	return NULL;
264 }
265 
266 struct got_object *
267 got_repo_get_cached_object(struct got_repository *repo,
268     struct got_object_id *id)
269 {
270 	return (struct got_object *)got_object_cache_get(&repo->objcache, id);
271 }
272 
273 const struct got_error *
274 got_repo_cache_tree(struct got_repository *repo, struct got_object_id *id,
275     struct got_tree_object *tree)
276 {
277 #ifndef GOT_NO_OBJ_CACHE
278 	const struct got_error *err = NULL;
279 	err = got_object_cache_add(&repo->treecache, id, tree);
280 	if (err) {
281 		if (err->code == GOT_ERR_OBJ_EXISTS ||
282 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
283 			err = NULL;
284 		return err;
285 	}
286 	tree->refcnt++;
287 #endif
288 	return NULL;
289 }
290 
291 struct got_tree_object *
292 got_repo_get_cached_tree(struct got_repository *repo,
293     struct got_object_id *id)
294 {
295 	return (struct got_tree_object *)got_object_cache_get(
296 	    &repo->treecache, id);
297 }
298 
299 const struct got_error *
300 got_repo_cache_commit(struct got_repository *repo, struct got_object_id *id,
301     struct got_commit_object *commit)
302 {
303 #ifndef GOT_NO_OBJ_CACHE
304 	const struct got_error *err = NULL;
305 	err = got_object_cache_add(&repo->commitcache, id, commit);
306 	if (err) {
307 		if (err->code == GOT_ERR_OBJ_EXISTS ||
308 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
309 			err = NULL;
310 		return err;
311 	}
312 	commit->refcnt++;
313 #endif
314 	return NULL;
315 }
316 
317 struct got_commit_object *
318 got_repo_get_cached_commit(struct got_repository *repo,
319     struct got_object_id *id)
320 {
321 	return (struct got_commit_object *)got_object_cache_get(
322 	    &repo->commitcache, id);
323 }
324 
325 const struct got_error *
326 got_repo_cache_tag(struct got_repository *repo, struct got_object_id *id,
327     struct got_tag_object *tag)
328 {
329 #ifndef GOT_NO_OBJ_CACHE
330 	const struct got_error *err = NULL;
331 	err = got_object_cache_add(&repo->tagcache, id, tag);
332 	if (err) {
333 		if (err->code == GOT_ERR_OBJ_EXISTS ||
334 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
335 			err = NULL;
336 		return err;
337 	}
338 	tag->refcnt++;
339 #endif
340 	return NULL;
341 }
342 
343 struct got_tag_object *
344 got_repo_get_cached_tag(struct got_repository *repo, struct got_object_id *id)
345 {
346 	return (struct got_tag_object *)got_object_cache_get(
347 	    &repo->tagcache, id);
348 }
349 
350 const struct got_error *
351 got_repo_cache_raw_object(struct got_repository *repo, struct got_object_id *id,
352     struct got_raw_object *raw)
353 {
354 #ifndef GOT_NO_OBJ_CACHE
355 	const struct got_error *err = NULL;
356 	err = got_object_cache_add(&repo->rawcache, id, raw);
357 	if (err) {
358 		if (err->code == GOT_ERR_OBJ_EXISTS ||
359 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
360 			err = NULL;
361 		return err;
362 	}
363 	raw->refcnt++;
364 #endif
365 	return NULL;
366 }
367 
368 
369 struct got_raw_object *
370 got_repo_get_cached_raw_object(struct got_repository *repo,
371     struct got_object_id *id)
372 {
373 	return (struct got_raw_object *)got_object_cache_get(&repo->rawcache, id);
374 }
375 
376 
377 static const struct got_error *
378 open_repo(struct got_repository *repo, const char *path)
379 {
380 	const struct got_error *err = NULL;
381 
382 	repo->gitdir_fd = -1;
383 
384 	/* bare git repository? */
385 	repo->path_git_dir = strdup(path);
386 	if (repo->path_git_dir == NULL)
387 		return got_error_from_errno("strdup");
388 	if (is_git_repo(repo)) {
389 		repo->path = strdup(repo->path_git_dir);
390 		if (repo->path == NULL) {
391 			err = got_error_from_errno("strdup");
392 			goto done;
393 		}
394 		repo->gitdir_fd = open(repo->path_git_dir,
395 		    O_DIRECTORY | O_CLOEXEC);
396 		if (repo->gitdir_fd == -1) {
397 			err = got_error_from_errno2("open",
398 			    repo->path_git_dir);
399 			goto done;
400 		}
401 		return NULL;
402 	}
403 
404 	/* git repository with working tree? */
405 	free(repo->path_git_dir);
406 	repo->path_git_dir = NULL;
407 	if (asprintf(&repo->path_git_dir, "%s/%s", path, GOT_GIT_DIR) == -1) {
408 		err = got_error_from_errno("asprintf");
409 		goto done;
410 	}
411 	if (is_git_repo(repo)) {
412 		repo->path = strdup(path);
413 		if (repo->path == NULL) {
414 			err = got_error_from_errno("strdup");
415 			goto done;
416 		}
417 		repo->gitdir_fd = open(repo->path_git_dir,
418 		    O_DIRECTORY | O_CLOEXEC);
419 		if (repo->gitdir_fd == -1) {
420 			err = got_error_from_errno2("open",
421 			    repo->path_git_dir);
422 			goto done;
423 		}
424 		return NULL;
425 	}
426 
427 	err = got_error(GOT_ERR_NOT_GIT_REPO);
428 done:
429 	if (err) {
430 		free(repo->path);
431 		repo->path = NULL;
432 		free(repo->path_git_dir);
433 		repo->path_git_dir = NULL;
434 		if (repo->gitdir_fd != -1)
435 			close(repo->gitdir_fd);
436 		repo->gitdir_fd = -1;
437 
438 	}
439 	return err;
440 }
441 
442 static const struct got_error *
443 parse_gitconfig_file(int *gitconfig_repository_format_version,
444     char **gitconfig_author_name, char **gitconfig_author_email,
445     struct got_remote_repo **remotes, int *nremotes,
446     char **gitconfig_owner, char ***extensions, int *nextensions,
447     const char *gitconfig_path)
448 {
449 	const struct got_error *err = NULL, *child_err = NULL;
450 	int fd = -1;
451 	int imsg_fds[2] = { -1, -1 };
452 	pid_t pid;
453 	struct imsgbuf *ibuf;
454 
455 	*gitconfig_repository_format_version = 0;
456 	if (extensions)
457 		*extensions = NULL;
458 	if (nextensions)
459 		*nextensions = 0;
460 	*gitconfig_author_name = NULL;
461 	*gitconfig_author_email = NULL;
462 	if (remotes)
463 		*remotes = NULL;
464 	if (nremotes)
465 		*nremotes = 0;
466 	if (gitconfig_owner)
467 		*gitconfig_owner = NULL;
468 
469 	fd = open(gitconfig_path, O_RDONLY | O_CLOEXEC);
470 	if (fd == -1) {
471 		if (errno == ENOENT)
472 			return NULL;
473 		return got_error_from_errno2("open", gitconfig_path);
474 	}
475 
476 	ibuf = calloc(1, sizeof(*ibuf));
477 	if (ibuf == NULL) {
478 		err = got_error_from_errno("calloc");
479 		goto done;
480 	}
481 
482 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
483 		err = got_error_from_errno("socketpair");
484 		goto done;
485 	}
486 
487 	pid = fork();
488 	if (pid == -1) {
489 		err = got_error_from_errno("fork");
490 		goto done;
491 	} else if (pid == 0) {
492 		got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_GITCONFIG,
493 		    gitconfig_path);
494 		/* not reached */
495 	}
496 
497 	if (close(imsg_fds[1]) == -1) {
498 		err = got_error_from_errno("close");
499 		goto done;
500 	}
501 	imsg_fds[1] = -1;
502 	imsg_init(ibuf, imsg_fds[0]);
503 
504 	err = got_privsep_send_gitconfig_parse_req(ibuf, fd);
505 	if (err)
506 		goto done;
507 	fd = -1;
508 
509 	err = got_privsep_send_gitconfig_repository_format_version_req(ibuf);
510 	if (err)
511 		goto done;
512 
513 	err = got_privsep_recv_gitconfig_int(
514 	    gitconfig_repository_format_version, ibuf);
515 	if (err)
516 		goto done;
517 
518 	if (extensions && nextensions) {
519 		err = got_privsep_send_gitconfig_repository_extensions_req(
520 		    ibuf);
521 		if (err)
522 			goto done;
523 		err = got_privsep_recv_gitconfig_int(nextensions, ibuf);
524 		if (err)
525 			goto done;
526 		if (*nextensions > 0) {
527 			int i;
528 			*extensions = calloc(*nextensions, sizeof(char *));
529 			if (*extensions == NULL) {
530 				err = got_error_from_errno("calloc");
531 				goto done;
532 			}
533 			for (i = 0; i < *nextensions; i++) {
534 				char *ext;
535 				err = got_privsep_recv_gitconfig_str(&ext,
536 				    ibuf);
537 				if (err)
538 					goto done;
539 				(*extensions)[i] = ext;
540 			}
541 		}
542 	}
543 
544 	err = got_privsep_send_gitconfig_author_name_req(ibuf);
545 	if (err)
546 		goto done;
547 
548 	err = got_privsep_recv_gitconfig_str(gitconfig_author_name, ibuf);
549 	if (err)
550 		goto done;
551 
552 	err = got_privsep_send_gitconfig_author_email_req(ibuf);
553 	if (err)
554 		goto done;
555 
556 	err = got_privsep_recv_gitconfig_str(gitconfig_author_email, ibuf);
557 	if (err)
558 		goto done;
559 
560 	if (remotes && nremotes) {
561 		err = got_privsep_send_gitconfig_remotes_req(ibuf);
562 		if (err)
563 			goto done;
564 
565 		err = got_privsep_recv_gitconfig_remotes(remotes,
566 		    nremotes, ibuf);
567 		if (err)
568 			goto done;
569 	}
570 
571 	if (gitconfig_owner) {
572 		err = got_privsep_send_gitconfig_owner_req(ibuf);
573 		if (err)
574 			goto done;
575 		err = got_privsep_recv_gitconfig_str(gitconfig_owner, ibuf);
576 		if (err)
577 			goto done;
578 	}
579 
580 	err = got_privsep_send_stop(imsg_fds[0]);
581 	child_err = got_privsep_wait_for_child(pid);
582 	if (child_err && err == NULL)
583 		err = child_err;
584 done:
585 	if (imsg_fds[0] != -1 && close(imsg_fds[0]) == -1 && err == NULL)
586 		err = got_error_from_errno("close");
587 	if (imsg_fds[1] != -1 && close(imsg_fds[1]) == -1 && err == NULL)
588 		err = got_error_from_errno("close");
589 	if (fd != -1 && close(fd) == -1 && err == NULL)
590 		err = got_error_from_errno2("close", gitconfig_path);
591 	free(ibuf);
592 	return err;
593 }
594 
595 static const struct got_error *
596 read_gitconfig(struct got_repository *repo, const char *global_gitconfig_path)
597 {
598 	const struct got_error *err = NULL;
599 	char *repo_gitconfig_path = NULL;
600 
601 	if (global_gitconfig_path) {
602 		/* Read settings from ~/.gitconfig. */
603 		int dummy_repo_version;
604 		err = parse_gitconfig_file(&dummy_repo_version,
605 		    &repo->global_gitconfig_author_name,
606 		    &repo->global_gitconfig_author_email,
607 		    NULL, NULL, NULL, NULL, NULL, global_gitconfig_path);
608 		if (err)
609 			return err;
610 	}
611 
612 	/* Read repository's .git/config file. */
613 	repo_gitconfig_path = got_repo_get_path_gitconfig(repo);
614 	if (repo_gitconfig_path == NULL)
615 		return got_error_from_errno("got_repo_get_path_gitconfig");
616 
617 	err = parse_gitconfig_file(&repo->gitconfig_repository_format_version,
618 	    &repo->gitconfig_author_name, &repo->gitconfig_author_email,
619 	    &repo->gitconfig_remotes, &repo->ngitconfig_remotes,
620 	    &repo->gitconfig_owner, &repo->extensions, &repo->nextensions,
621 	    repo_gitconfig_path);
622 	if (err)
623 		goto done;
624 done:
625 	free(repo_gitconfig_path);
626 	return err;
627 }
628 
629 static const struct got_error *
630 read_gotconfig(struct got_repository *repo)
631 {
632 	const struct got_error *err = NULL;
633 	char *gotconfig_path;
634 
635 	gotconfig_path = got_repo_get_path_gotconfig(repo);
636 	if (gotconfig_path == NULL)
637 		return got_error_from_errno("got_repo_get_path_gotconfig");
638 
639 	err = got_gotconfig_read(&repo->gotconfig, gotconfig_path);
640 	free(gotconfig_path);
641 	return err;
642 }
643 
644 /* Supported repository format extensions. */
645 static const char *const repo_extensions[] = {
646 	"noop",			/* Got supports repository format version 1. */
647 	"preciousObjects",	/* Supported by gotadmin cleanup. */
648 	"worktreeConfig",	/* Got does not care about Git work trees. */
649 };
650 
651 const struct got_error *
652 got_repo_open(struct got_repository **repop, const char *path,
653     const char *global_gitconfig_path)
654 {
655 	struct got_repository *repo = NULL;
656 	const struct got_error *err = NULL;
657 	char *repo_path = NULL;
658 	size_t i;
659 	struct rlimit rl;
660 
661 	*repop = NULL;
662 
663 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
664 		return got_error_from_errno("getrlimit");
665 
666 	repo = calloc(1, sizeof(*repo));
667 	if (repo == NULL)
668 		return got_error_from_errno("calloc");
669 
670 	RB_INIT(&repo->packidx_bloom_filters);
671 	TAILQ_INIT(&repo->packidx_paths);
672 
673 	for (i = 0; i < nitems(repo->privsep_children); i++) {
674 		memset(&repo->privsep_children[i], 0,
675 		    sizeof(repo->privsep_children[0]));
676 		repo->privsep_children[i].imsg_fd = -1;
677 	}
678 
679 	err = got_object_cache_init(&repo->objcache,
680 	    GOT_OBJECT_CACHE_TYPE_OBJ);
681 	if (err)
682 		goto done;
683 	err = got_object_cache_init(&repo->treecache,
684 	    GOT_OBJECT_CACHE_TYPE_TREE);
685 	if (err)
686 		goto done;
687 	err = got_object_cache_init(&repo->commitcache,
688 	    GOT_OBJECT_CACHE_TYPE_COMMIT);
689 	if (err)
690 		goto done;
691 	err = got_object_cache_init(&repo->tagcache,
692 	    GOT_OBJECT_CACHE_TYPE_TAG);
693 	if (err)
694 		goto done;
695 	err = got_object_cache_init(&repo->rawcache,
696 	    GOT_OBJECT_CACHE_TYPE_RAW);
697 	if (err)
698 		goto done;
699 
700 	repo->pack_cache_size = GOT_PACK_CACHE_SIZE;
701 	if (repo->pack_cache_size > rl.rlim_cur / 8)
702 		repo->pack_cache_size = rl.rlim_cur / 8;
703 
704 	repo_path = realpath(path, NULL);
705 	if (repo_path == NULL) {
706 		err = got_error_from_errno2("realpath", path);
707 		goto done;
708 	}
709 
710 	for (;;) {
711 		char *parent_path;
712 
713 		err = open_repo(repo, repo_path);
714 		if (err == NULL)
715 			break;
716 		if (err->code != GOT_ERR_NOT_GIT_REPO)
717 			goto done;
718 		if (repo_path[0] == '/' && repo_path[1] == '\0') {
719 			err = got_error(GOT_ERR_NOT_GIT_REPO);
720 			goto done;
721 		}
722 		err = got_path_dirname(&parent_path, repo_path);
723 		if (err)
724 			goto done;
725 		free(repo_path);
726 		repo_path = parent_path;
727 	}
728 
729 	err = read_gotconfig(repo);
730 	if (err)
731 		goto done;
732 
733 	err = read_gitconfig(repo, global_gitconfig_path);
734 	if (err)
735 		goto done;
736 	if (repo->gitconfig_repository_format_version != 0)
737 		err = got_error_path(path, GOT_ERR_GIT_REPO_FORMAT);
738 	for (i = 0; i < repo->nextensions; i++) {
739 		char *ext = repo->extensions[i];
740 		int j, supported = 0;
741 		for (j = 0; j < nitems(repo_extensions); j++) {
742 			if (strcmp(ext, repo_extensions[j]) == 0) {
743 				supported = 1;
744 				break;
745 			}
746 		}
747 		if (!supported) {
748 			err = got_error_path(ext, GOT_ERR_GIT_REPO_EXT);
749 			goto done;
750 		}
751 	}
752 
753 	err = got_repo_list_packidx(&repo->packidx_paths, repo);
754 done:
755 	if (err)
756 		got_repo_close(repo);
757 	else
758 		*repop = repo;
759 	free(repo_path);
760 	return err;
761 }
762 
763 const struct got_error *
764 got_repo_close(struct got_repository *repo)
765 {
766 	const struct got_error *err = NULL, *child_err;
767 	struct got_packidx_bloom_filter *bf;
768 	struct got_pathlist_entry *pe;
769 	size_t i;
770 
771 	for (i = 0; i < repo->pack_cache_size; i++) {
772 		if (repo->packidx_cache[i] == NULL)
773 			break;
774 		got_packidx_close(repo->packidx_cache[i]);
775 	}
776 
777 	while ((bf = RB_MIN(got_packidx_bloom_filter_tree,
778 	    &repo->packidx_bloom_filters))) {
779 		RB_REMOVE(got_packidx_bloom_filter_tree,
780 		    &repo->packidx_bloom_filters, bf);
781 		free(bf->bloom);
782 		free(bf);
783 	}
784 
785 	for (i = 0; i < repo->pack_cache_size; i++) {
786 		if (repo->packs[i].path_packfile == NULL)
787 			break;
788 		got_pack_close(&repo->packs[i]);
789 	}
790 
791 	free(repo->path);
792 	free(repo->path_git_dir);
793 
794 	got_object_cache_close(&repo->objcache);
795 	got_object_cache_close(&repo->treecache);
796 	got_object_cache_close(&repo->commitcache);
797 	got_object_cache_close(&repo->tagcache);
798 	got_object_cache_close(&repo->rawcache);
799 
800 	for (i = 0; i < nitems(repo->privsep_children); i++) {
801 		if (repo->privsep_children[i].imsg_fd == -1)
802 			continue;
803 		imsg_clear(repo->privsep_children[i].ibuf);
804 		free(repo->privsep_children[i].ibuf);
805 		err = got_privsep_send_stop(repo->privsep_children[i].imsg_fd);
806 		child_err = got_privsep_wait_for_child(
807 		    repo->privsep_children[i].pid);
808 		if (child_err && err == NULL)
809 			err = child_err;
810 		if (close(repo->privsep_children[i].imsg_fd) == -1 &&
811 		    err == NULL)
812 			err = got_error_from_errno("close");
813 	}
814 
815 	if (repo->gitdir_fd != -1 && close(repo->gitdir_fd) == -1 &&
816 	    err == NULL)
817 		err = got_error_from_errno("close");
818 
819 	if (repo->gotconfig)
820 		got_gotconfig_free(repo->gotconfig);
821 	free(repo->gitconfig_author_name);
822 	free(repo->gitconfig_author_email);
823 	for (i = 0; i < repo->ngitconfig_remotes; i++)
824 		got_repo_free_remote_repo_data(&repo->gitconfig_remotes[i]);
825 	free(repo->gitconfig_remotes);
826 	for (i = 0; i < repo->nextensions; i++)
827 		free(repo->extensions[i]);
828 	free(repo->extensions);
829 
830 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry)
831 		free((void *)pe->path);
832 	got_pathlist_free(&repo->packidx_paths);
833 	free(repo);
834 
835 	return err;
836 }
837 
838 void
839 got_repo_free_remote_repo_data(struct got_remote_repo *repo)
840 {
841 	int i;
842 
843 	free(repo->name);
844 	repo->name = NULL;
845 	free(repo->fetch_url);
846 	repo->fetch_url = NULL;
847 	free(repo->send_url);
848 	repo->send_url = NULL;
849 	for (i = 0; i < repo->nfetch_branches; i++)
850 		free(repo->fetch_branches[i]);
851 	free(repo->fetch_branches);
852 	repo->fetch_branches = NULL;
853 	repo->nfetch_branches = 0;
854 	for (i = 0; i < repo->nsend_branches; i++)
855 		free(repo->send_branches[i]);
856 	free(repo->send_branches);
857 	repo->send_branches = NULL;
858 	repo->nsend_branches = 0;
859 }
860 
861 const struct got_error *
862 got_repo_map_path(char **in_repo_path, struct got_repository *repo,
863     const char *input_path)
864 {
865 	const struct got_error *err = NULL;
866 	const char *repo_abspath = NULL;
867 	size_t repolen, len;
868 	char *canonpath, *path = NULL;
869 
870 	*in_repo_path = NULL;
871 
872 	canonpath = strdup(input_path);
873 	if (canonpath == NULL) {
874 		err = got_error_from_errno("strdup");
875 		goto done;
876 	}
877 	err = got_canonpath(input_path, canonpath, strlen(canonpath) + 1);
878 	if (err)
879 		goto done;
880 
881 	repo_abspath = got_repo_get_path(repo);
882 
883 	if (canonpath[0] == '\0') {
884 		path = strdup(canonpath);
885 		if (path == NULL) {
886 			err = got_error_from_errno("strdup");
887 			goto done;
888 		}
889 	} else {
890 		path = realpath(canonpath, NULL);
891 		if (path == NULL) {
892 			if (errno != ENOENT) {
893 				err = got_error_from_errno2("realpath",
894 				    canonpath);
895 				goto done;
896 			}
897 			/*
898 			 * Path is not on disk.
899 			 * Assume it is already relative to repository root.
900 			 */
901 			path = strdup(canonpath);
902 			if (path == NULL) {
903 				err = got_error_from_errno("strdup");
904 				goto done;
905 			}
906 		}
907 
908 		repolen = strlen(repo_abspath);
909 		len = strlen(path);
910 
911 
912 		if (strcmp(path, repo_abspath) == 0) {
913 			free(path);
914 			path = strdup("");
915 			if (path == NULL) {
916 				err = got_error_from_errno("strdup");
917 				goto done;
918 			}
919 		} else if (len > repolen &&
920 		    got_path_is_child(path, repo_abspath, repolen)) {
921 			/* Matched an on-disk path inside repository. */
922 			if (got_repo_is_bare(repo)) {
923 				/*
924 				 * Matched an on-disk path inside repository
925 				 * database. Treat input as repository-relative.
926 				 */
927 				free(path);
928 				path = canonpath;
929 				canonpath = NULL;
930 			} else {
931 				char *child;
932 				/* Strip common prefix with repository path. */
933 				err = got_path_skip_common_ancestor(&child,
934 				    repo_abspath, path);
935 				if (err)
936 					goto done;
937 				free(path);
938 				path = child;
939 			}
940 		} else {
941 			/*
942 			 * Matched unrelated on-disk path.
943 			 * Treat input as repository-relative.
944 			 */
945 			free(path);
946 			path = canonpath;
947 			canonpath = NULL;
948 		}
949 	}
950 
951 	/* Make in-repository path absolute */
952 	if (path[0] != '/') {
953 		char *abspath;
954 		if (asprintf(&abspath, "/%s", path) == -1) {
955 			err = got_error_from_errno("asprintf");
956 			goto done;
957 		}
958 		free(path);
959 		path = abspath;
960 	}
961 
962 done:
963 	free(canonpath);
964 	if (err)
965 		free(path);
966 	else
967 		*in_repo_path = path;
968 	return err;
969 }
970 
971 static const struct got_error *
972 cache_packidx(struct got_repository *repo, struct got_packidx *packidx,
973     const char *path_packidx)
974 {
975 	const struct got_error *err = NULL;
976 	size_t i;
977 
978 	for (i = 0; i < repo->pack_cache_size; i++) {
979 		if (repo->packidx_cache[i] == NULL)
980 			break;
981 		if (strcmp(repo->packidx_cache[i]->path_packidx,
982 		    path_packidx) == 0) {
983 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
984 		}
985 	}
986 	if (i == repo->pack_cache_size) {
987 		i = repo->pack_cache_size - 1;
988 		err = got_packidx_close(repo->packidx_cache[i]);
989 		if (err)
990 			return err;
991 	}
992 
993 	repo->packidx_cache[i] = packidx;
994 
995 	return NULL;
996 }
997 
998 int
999 got_repo_is_packidx_filename(const char *name, size_t len)
1000 {
1001 	if (len != GOT_PACKIDX_NAMELEN)
1002 		return 0;
1003 
1004 	if (strncmp(name, GOT_PACK_PREFIX, strlen(GOT_PACK_PREFIX)) != 0)
1005 		return 0;
1006 
1007 	if (strcmp(name + strlen(GOT_PACK_PREFIX) +
1008 	    SHA1_DIGEST_STRING_LENGTH - 1, GOT_PACKIDX_SUFFIX) != 0)
1009 		return 0;
1010 
1011 	return 1;
1012 }
1013 
1014 static struct got_packidx_bloom_filter *
1015 get_packidx_bloom_filter(struct got_repository *repo,
1016     const char *path, size_t path_len)
1017 {
1018 	struct got_packidx_bloom_filter key;
1019 
1020 	if (strlcpy(key.path, path, sizeof(key.path)) >= sizeof(key.path))
1021 		return NULL; /* XXX */
1022 	key.path_len = path_len;
1023 
1024 	return RB_FIND(got_packidx_bloom_filter_tree,
1025 	    &repo->packidx_bloom_filters, &key);
1026 }
1027 
1028 int
1029 got_repo_check_packidx_bloom_filter(struct got_repository *repo,
1030     const char *path_packidx, struct got_object_id *id)
1031 {
1032 	struct got_packidx_bloom_filter *bf;
1033 
1034 	bf = get_packidx_bloom_filter(repo, path_packidx, strlen(path_packidx));
1035 	if (bf)
1036 		return bloom_check(bf->bloom, id->sha1, sizeof(id->sha1));
1037 
1038 	/* No bloom filter means this pack index must be searched. */
1039 	return 1;
1040 }
1041 
1042 static const struct got_error *
1043 add_packidx_bloom_filter(struct got_repository *repo,
1044     struct got_packidx *packidx, const char *path_packidx)
1045 {
1046 	int i, nobjects = be32toh(packidx->hdr.fanout_table[0xff]);
1047 	struct got_packidx_bloom_filter *bf;
1048 	size_t len;
1049 
1050 	/*
1051 	 * Don't use bloom filters for very large pack index files.
1052 	 * Large pack files will contain a relatively large fraction
1053 	 * of our objects so we will likely need to visit them anyway.
1054 	 * The more objects a pack file contains the higher the probability
1055 	 * of a false-positive match from the bloom filter. And reading
1056 	 * all object IDs from a large pack index file can be expensive.
1057 	 */
1058 	if (nobjects > 100000) /* cut-off at about 2MB, at 20 bytes per ID */
1059 		return NULL;
1060 
1061 	/* Do we already have a filter for this pack index? */
1062 	if (get_packidx_bloom_filter(repo, path_packidx,
1063 	    strlen(path_packidx)) != NULL)
1064 		return NULL;
1065 
1066 	bf = calloc(1, sizeof(*bf));
1067 	if (bf == NULL)
1068 		return got_error_from_errno("calloc");
1069 	bf->bloom = calloc(1, sizeof(*bf->bloom));
1070 	if (bf->bloom == NULL) {
1071 		free(bf);
1072 		return got_error_from_errno("calloc");
1073 	}
1074 	
1075 	len = strlcpy(bf->path, path_packidx, sizeof(bf->path));
1076 	if (len >= sizeof(bf->path)) {
1077 		free(bf->bloom);
1078 		free(bf);
1079 		return got_error(GOT_ERR_NO_SPACE);
1080 	}
1081 	bf->path_len = len;
1082 
1083 	/* Minimum size supported by our bloom filter is 1000 entries. */
1084 	bloom_init(bf->bloom, nobjects < 1000 ? 1000 : nobjects, 0.1);
1085 	for (i = 0; i < nobjects; i++) {
1086 		struct got_packidx_object_id *id;
1087 		id = &packidx->hdr.sorted_ids[i];
1088 		bloom_add(bf->bloom, id->sha1, sizeof(id->sha1));
1089 	}
1090 
1091 	RB_INSERT(got_packidx_bloom_filter_tree,
1092 	    &repo->packidx_bloom_filters, bf);
1093 	return NULL;
1094 }
1095 
1096 const struct got_error *
1097 got_repo_search_packidx(struct got_packidx **packidx, int *idx,
1098     struct got_repository *repo, struct got_object_id *id)
1099 {
1100 	const struct got_error *err;
1101 	struct got_pathlist_entry *pe;
1102 	size_t i;
1103 
1104 	/* Search pack index cache. */
1105 	for (i = 0; i < repo->pack_cache_size; i++) {
1106 		if (repo->packidx_cache[i] == NULL)
1107 			break;
1108 		if (!got_repo_check_packidx_bloom_filter(repo,
1109 		    repo->packidx_cache[i]->path_packidx, id))
1110 			continue; /* object will not be found in this index */
1111 		*idx = got_packidx_get_object_idx(repo->packidx_cache[i], id);
1112 		if (*idx != -1) {
1113 			*packidx = repo->packidx_cache[i];
1114 			/*
1115 			 * Move this cache entry to the front. Repeatedly
1116 			 * searching a wrong pack index can be expensive.
1117 			 */
1118 			if (i > 0) {
1119 				memmove(&repo->packidx_cache[1],
1120 				    &repo->packidx_cache[0],
1121 				    i * sizeof(repo->packidx_cache[0]));
1122 				repo->packidx_cache[0] = *packidx;
1123 			}
1124 			return NULL;
1125 		}
1126 	}
1127 	/* No luck. Search the filesystem. */
1128 
1129 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
1130 		const char *path_packidx = pe->path;
1131 		int is_cached = 0;
1132 
1133 		if (!got_repo_check_packidx_bloom_filter(repo,
1134 		    pe->path, id))
1135 			continue; /* object will not be found in this index */
1136 
1137 		for (i = 0; i < repo->pack_cache_size; i++) {
1138 			if (repo->packidx_cache[i] == NULL)
1139 				break;
1140 			if (strcmp(repo->packidx_cache[i]->path_packidx,
1141 			    path_packidx) == 0) {
1142 				is_cached = 1;
1143 				break;
1144 			}
1145 		}
1146 		if (is_cached)
1147 			continue; /* already searched */
1148 
1149 		err = got_packidx_open(packidx, got_repo_get_fd(repo),
1150 		    path_packidx, 0);
1151 		if (err)
1152 			goto done;
1153 
1154 		err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1155 		if (err)
1156 			goto done;
1157 
1158 		err = cache_packidx(repo, *packidx, path_packidx);
1159 		if (err)
1160 			goto done;
1161 
1162 		*idx = got_packidx_get_object_idx(*packidx, id);
1163 		if (*idx != -1) {
1164 			err = NULL; /* found the object */
1165 			goto done;
1166 		}
1167 	}
1168 
1169 	err = got_error_no_obj(id);
1170 done:
1171 	return err;
1172 }
1173 
1174 const struct got_error *
1175 got_repo_list_packidx(struct got_pathlist_head *packidx_paths,
1176     struct got_repository *repo)
1177 {
1178 	const struct got_error *err = NULL;
1179 	DIR *packdir = NULL;
1180 	struct dirent *dent;
1181 	char *path_packidx = NULL;
1182 	int packdir_fd;
1183 
1184 	packdir_fd = openat(got_repo_get_fd(repo),
1185 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY | O_CLOEXEC);
1186 	if (packdir_fd == -1) {
1187 		return got_error_from_errno_fmt("openat: %s/%s",
1188 		    got_repo_get_path_git_dir(repo),
1189 		    GOT_OBJECTS_PACK_DIR);
1190 	}
1191 
1192 	packdir = fdopendir(packdir_fd);
1193 	if (packdir == NULL) {
1194 		err = got_error_from_errno("fdopendir");
1195 		goto done;
1196 	}
1197 
1198 	while ((dent = readdir(packdir)) != NULL) {
1199 		if (!got_repo_is_packidx_filename(dent->d_name, dent->d_namlen))
1200 			continue;
1201 
1202 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1203 		    dent->d_name) == -1) {
1204 			err = got_error_from_errno("asprintf");
1205 			path_packidx = NULL;
1206 			break;
1207 		}
1208 
1209 		err = got_pathlist_append(packidx_paths, path_packidx, NULL);
1210 		if (err)
1211 			break;
1212 	}
1213 done:
1214 	if (err)
1215 		free(path_packidx);
1216 	if (packdir && closedir(packdir) != 0 && err == NULL)
1217 		err = got_error_from_errno("closedir");
1218 	return err;
1219 }
1220 
1221 const struct got_error *
1222 got_repo_get_packidx(struct got_packidx **packidx, const char *path_packidx,
1223     struct got_repository *repo)
1224 {
1225 	const struct got_error *err;
1226 	size_t i;
1227 
1228 	*packidx = NULL;
1229 
1230 	/* Search pack index cache. */
1231 	for (i = 0; i < repo->pack_cache_size; i++) {
1232 		if (repo->packidx_cache[i] == NULL)
1233 			break;
1234 		if (strcmp(repo->packidx_cache[i]->path_packidx,
1235 		    path_packidx) == 0) {
1236 			*packidx = repo->packidx_cache[i];
1237 			return NULL;
1238 		}
1239 	}
1240 	/* No luck. Search the filesystem. */
1241 
1242 	err = got_packidx_open(packidx, got_repo_get_fd(repo),
1243 	    path_packidx, 0);
1244 	if (err)
1245 		return err;
1246 
1247 	err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1248 	if (err)
1249 		goto done;
1250 
1251 	err = cache_packidx(repo, *packidx, path_packidx);
1252 done:
1253 	if (err) {
1254 		got_packidx_close(*packidx);
1255 		*packidx = NULL;
1256 	}
1257 	return err;
1258 }
1259 
1260 static const struct got_error *
1261 read_packfile_hdr(int fd, struct got_packidx *packidx)
1262 {
1263 	const struct got_error *err = NULL;
1264 	uint32_t totobj = be32toh(packidx->hdr.fanout_table[0xff]);
1265 	struct got_packfile_hdr hdr;
1266 	ssize_t n;
1267 
1268 	n = read(fd, &hdr, sizeof(hdr));
1269 	if (n < 0)
1270 		return got_error_from_errno("read");
1271 	if (n != sizeof(hdr))
1272 		return got_error(GOT_ERR_BAD_PACKFILE);
1273 
1274 	if (be32toh(hdr.signature) != GOT_PACKFILE_SIGNATURE ||
1275 	    be32toh(hdr.version) != GOT_PACKFILE_VERSION ||
1276 	    be32toh(hdr.nobjects) != totobj)
1277 		err = got_error(GOT_ERR_BAD_PACKFILE);
1278 
1279 	return err;
1280 }
1281 
1282 static const struct got_error *
1283 open_packfile(int *fd, struct got_repository *repo,
1284     const char *relpath, struct got_packidx *packidx)
1285 {
1286 	const struct got_error *err = NULL;
1287 
1288 	*fd = openat(got_repo_get_fd(repo), relpath,
1289 	    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
1290 	if (*fd == -1)
1291 		return got_error_from_errno_fmt("openat: %s/%s",
1292 		    got_repo_get_path_git_dir(repo), relpath);
1293 
1294 	if (packidx) {
1295 		err = read_packfile_hdr(*fd, packidx);
1296 		if (err) {
1297 			close(*fd);
1298 			*fd = -1;
1299 		}
1300 	}
1301 
1302 	return err;
1303 }
1304 
1305 const struct got_error *
1306 got_repo_cache_pack(struct got_pack **packp, struct got_repository *repo,
1307     const char *path_packfile, struct got_packidx *packidx)
1308 {
1309 	const struct got_error *err = NULL;
1310 	struct got_pack *pack = NULL;
1311 	struct stat sb;
1312 	size_t i;
1313 
1314 	if (packp)
1315 		*packp = NULL;
1316 
1317 	for (i = 0; i < repo->pack_cache_size; i++) {
1318 		pack = &repo->packs[i];
1319 		if (pack->path_packfile == NULL)
1320 			break;
1321 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1322 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
1323 	}
1324 
1325 	if (i == repo->pack_cache_size) {
1326 		err = got_pack_close(&repo->packs[i - 1]);
1327 		if (err)
1328 			return err;
1329 		memmove(&repo->packs[1], &repo->packs[0],
1330 		    sizeof(repo->packs) - sizeof(repo->packs[0]));
1331 		i = 0;
1332 	}
1333 
1334 	pack = &repo->packs[i];
1335 
1336 	pack->path_packfile = strdup(path_packfile);
1337 	if (pack->path_packfile == NULL) {
1338 		err = got_error_from_errno("strdup");
1339 		goto done;
1340 	}
1341 
1342 	err = open_packfile(&pack->fd, repo, path_packfile, packidx);
1343 	if (err)
1344 		goto done;
1345 
1346 	if (fstat(pack->fd, &sb) != 0) {
1347 		err = got_error_from_errno("fstat");
1348 		goto done;
1349 	}
1350 	pack->filesize = sb.st_size;
1351 
1352 	pack->privsep_child = NULL;
1353 
1354 #ifndef GOT_PACK_NO_MMAP
1355 	pack->map = mmap(NULL, pack->filesize, PROT_READ, MAP_PRIVATE,
1356 	    pack->fd, 0);
1357 	if (pack->map == MAP_FAILED) {
1358 		if (errno != ENOMEM) {
1359 			err = got_error_from_errno("mmap");
1360 			goto done;
1361 		}
1362 		pack->map = NULL; /* fall back to read(2) */
1363 	}
1364 #endif
1365 done:
1366 	if (err) {
1367 		if (pack) {
1368 			free(pack->path_packfile);
1369 			memset(pack, 0, sizeof(*pack));
1370 		}
1371 	} else if (packp)
1372 		*packp = pack;
1373 	return err;
1374 }
1375 
1376 struct got_pack *
1377 got_repo_get_cached_pack(struct got_repository *repo, const char *path_packfile)
1378 {
1379 	struct got_pack *pack = NULL;
1380 	size_t i;
1381 
1382 	for (i = 0; i < repo->pack_cache_size; i++) {
1383 		pack = &repo->packs[i];
1384 		if (pack->path_packfile == NULL)
1385 			break;
1386 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1387 			return pack;
1388 	}
1389 
1390 	return NULL;
1391 }
1392 
1393 const struct got_error *
1394 got_repo_init(const char *repo_path)
1395 {
1396 	const struct got_error *err = NULL;
1397 	const char *dirnames[] = {
1398 		GOT_OBJECTS_DIR,
1399 		GOT_OBJECTS_PACK_DIR,
1400 		GOT_REFS_DIR,
1401 	};
1402 	const char *description_str = "Unnamed repository; "
1403 	    "edit this file 'description' to name the repository.";
1404 	const char *headref_str = "ref: refs/heads/main";
1405 	const char *gitconfig_str = "[core]\n"
1406 	    "\trepositoryformatversion = 0\n"
1407 	    "\tfilemode = true\n"
1408 	    "\tbare = true\n";
1409 	char *path;
1410 	size_t i;
1411 
1412 	if (!got_path_dir_is_empty(repo_path))
1413 		return got_error(GOT_ERR_DIR_NOT_EMPTY);
1414 
1415 	for (i = 0; i < nitems(dirnames); i++) {
1416 		if (asprintf(&path, "%s/%s", repo_path, dirnames[i]) == -1) {
1417 			return got_error_from_errno("asprintf");
1418 		}
1419 		err = got_path_mkdir(path);
1420 		free(path);
1421 		if (err)
1422 			return err;
1423 	}
1424 
1425 	if (asprintf(&path, "%s/%s", repo_path, "description") == -1)
1426 		return got_error_from_errno("asprintf");
1427 	err = got_path_create_file(path, description_str);
1428 	free(path);
1429 	if (err)
1430 		return err;
1431 
1432 	if (asprintf(&path, "%s/%s", repo_path, GOT_HEAD_FILE) == -1)
1433 		return got_error_from_errno("asprintf");
1434 	err = got_path_create_file(path, headref_str);
1435 	free(path);
1436 	if (err)
1437 		return err;
1438 
1439 	if (asprintf(&path, "%s/%s", repo_path, "config") == -1)
1440 		return got_error_from_errno("asprintf");
1441 	err = got_path_create_file(path, gitconfig_str);
1442 	free(path);
1443 	if (err)
1444 		return err;
1445 
1446 	return NULL;
1447 }
1448 
1449 static const struct got_error *
1450 match_packed_object(struct got_object_id **unique_id,
1451     struct got_repository *repo, const char *id_str_prefix, int obj_type)
1452 {
1453 	const struct got_error *err = NULL;
1454 	struct got_object_id_queue matched_ids;
1455 	struct got_pathlist_entry *pe;
1456 
1457 	STAILQ_INIT(&matched_ids);
1458 
1459 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
1460 		const char *path_packidx = pe->path;
1461 		struct got_packidx *packidx;
1462 		struct got_object_qid *qid;
1463 
1464 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1465 		    path_packidx, 0);
1466 		if (err)
1467 			break;
1468 
1469 		err = got_packidx_match_id_str_prefix(&matched_ids,
1470 		    packidx, id_str_prefix);
1471 		if (err) {
1472 			got_packidx_close(packidx);
1473 			break;
1474 		}
1475 		err = got_packidx_close(packidx);
1476 		if (err)
1477 			break;
1478 
1479 		STAILQ_FOREACH(qid, &matched_ids, entry) {
1480 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1481 				int matched_type;
1482 				err = got_object_get_type(&matched_type, repo,
1483 				    qid->id);
1484 				if (err)
1485 					goto done;
1486 				if (matched_type != obj_type)
1487 					continue;
1488 			}
1489 			if (*unique_id == NULL) {
1490 				*unique_id = got_object_id_dup(qid->id);
1491 				if (*unique_id == NULL) {
1492 					err = got_error_from_errno("malloc");
1493 					goto done;
1494 				}
1495 			} else {
1496 				if (got_object_id_cmp(*unique_id, qid->id) == 0)
1497 					continue; /* packed multiple times */
1498 				err = got_error(GOT_ERR_AMBIGUOUS_ID);
1499 				goto done;
1500 			}
1501 		}
1502 	}
1503 done:
1504 	got_object_id_queue_free(&matched_ids);
1505 	if (err) {
1506 		free(*unique_id);
1507 		*unique_id = NULL;
1508 	}
1509 	return err;
1510 }
1511 
1512 static const struct got_error *
1513 match_loose_object(struct got_object_id **unique_id, const char *path_objects,
1514     const char *object_dir, const char *id_str_prefix, int obj_type,
1515     struct got_repository *repo)
1516 {
1517 	const struct got_error *err = NULL;
1518 	char *path;
1519 	DIR *dir = NULL;
1520 	struct dirent *dent;
1521 	struct got_object_id id;
1522 
1523 	if (asprintf(&path, "%s/%s", path_objects, object_dir) == -1) {
1524 		err = got_error_from_errno("asprintf");
1525 		goto done;
1526 	}
1527 
1528 	dir = opendir(path);
1529 	if (dir == NULL) {
1530 		if (errno == ENOENT) {
1531 			err = NULL;
1532 			goto done;
1533 		}
1534 		err = got_error_from_errno2("opendir", path);
1535 		goto done;
1536 	}
1537 	while ((dent = readdir(dir)) != NULL) {
1538 		char *id_str;
1539 		int cmp;
1540 
1541 		if (strcmp(dent->d_name, ".") == 0 ||
1542 		    strcmp(dent->d_name, "..") == 0)
1543 			continue;
1544 
1545 		if (asprintf(&id_str, "%s%s", object_dir, dent->d_name) == -1) {
1546 			err = got_error_from_errno("asprintf");
1547 			goto done;
1548 		}
1549 
1550 		if (!got_parse_sha1_digest(id.sha1, id_str))
1551 			continue;
1552 
1553 		/*
1554 		 * Directory entries do not necessarily appear in
1555 		 * sorted order, so we must iterate over all of them.
1556 		 */
1557 		cmp = strncmp(id_str, id_str_prefix, strlen(id_str_prefix));
1558 		if (cmp != 0) {
1559 			free(id_str);
1560 			continue;
1561 		}
1562 
1563 		if (*unique_id == NULL) {
1564 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1565 				int matched_type;
1566 				err = got_object_get_type(&matched_type, repo,
1567 				    &id);
1568 				if (err)
1569 					goto done;
1570 				if (matched_type != obj_type)
1571 					continue;
1572 			}
1573 			*unique_id = got_object_id_dup(&id);
1574 			if (*unique_id == NULL) {
1575 				err = got_error_from_errno("got_object_id_dup");
1576 				free(id_str);
1577 				goto done;
1578 			}
1579 		} else {
1580 			if (got_object_id_cmp(*unique_id, &id) == 0)
1581 				continue; /* both packed and loose */
1582 			err = got_error(GOT_ERR_AMBIGUOUS_ID);
1583 			free(id_str);
1584 			goto done;
1585 		}
1586 	}
1587 done:
1588 	if (dir && closedir(dir) != 0 && err == NULL)
1589 		err = got_error_from_errno("closedir");
1590 	if (err) {
1591 		free(*unique_id);
1592 		*unique_id = NULL;
1593 	}
1594 	free(path);
1595 	return err;
1596 }
1597 
1598 const struct got_error *
1599 got_repo_match_object_id_prefix(struct got_object_id **id,
1600     const char *id_str_prefix, int obj_type, struct got_repository *repo)
1601 {
1602 	const struct got_error *err = NULL;
1603 	char *path_objects = got_repo_get_path_objects(repo);
1604 	char *object_dir = NULL;
1605 	size_t len;
1606 	int i;
1607 
1608 	*id = NULL;
1609 
1610 	len = strlen(id_str_prefix);
1611 	if (len > SHA1_DIGEST_STRING_LENGTH - 1)
1612 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1613 
1614 	for (i = 0; i < len; i++) {
1615 		if (isxdigit((unsigned char)id_str_prefix[i]))
1616 			continue;
1617 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1618 	}
1619 
1620 	if (len >= 2) {
1621 		err = match_packed_object(id, repo, id_str_prefix, obj_type);
1622 		if (err)
1623 			goto done;
1624 		object_dir = strndup(id_str_prefix, 2);
1625 		if (object_dir == NULL) {
1626 			err = got_error_from_errno("strdup");
1627 			goto done;
1628 		}
1629 		err = match_loose_object(id, path_objects, object_dir,
1630 		    id_str_prefix, obj_type, repo);
1631 	} else if (len == 1) {
1632 		int i;
1633 		for (i = 0; i < 0xf; i++) {
1634 			if (asprintf(&object_dir, "%s%.1x", id_str_prefix, i)
1635 			    == -1) {
1636 				err = got_error_from_errno("asprintf");
1637 				goto done;
1638 			}
1639 			err = match_packed_object(id, repo, object_dir,
1640 			    obj_type);
1641 			if (err)
1642 				goto done;
1643 			err = match_loose_object(id, path_objects, object_dir,
1644 			    id_str_prefix, obj_type, repo);
1645 			if (err)
1646 				goto done;
1647 		}
1648 	} else {
1649 		err = got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1650 		goto done;
1651 	}
1652 done:
1653 	free(object_dir);
1654 	if (err) {
1655 		free(*id);
1656 		*id = NULL;
1657 	} else if (*id == NULL) {
1658 		switch (obj_type) {
1659 		case GOT_OBJ_TYPE_BLOB:
1660 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1661 			    GOT_OBJ_LABEL_BLOB, id_str_prefix);
1662 			break;
1663 		case GOT_OBJ_TYPE_TREE:
1664 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1665 			    GOT_OBJ_LABEL_TREE, id_str_prefix);
1666 			break;
1667 		case GOT_OBJ_TYPE_COMMIT:
1668 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1669 			    GOT_OBJ_LABEL_COMMIT, id_str_prefix);
1670 			break;
1671 		case GOT_OBJ_TYPE_TAG:
1672 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1673 			    GOT_OBJ_LABEL_TAG, id_str_prefix);
1674 			break;
1675 		default:
1676 			err = got_error_path(id_str_prefix, GOT_ERR_NO_OBJ);
1677 			break;
1678 		}
1679 	}
1680 
1681 	return err;
1682 }
1683 
1684 const struct got_error *
1685 got_repo_match_object_id(struct got_object_id **id, char **label,
1686     const char *id_str, int obj_type, struct got_reflist_head *refs,
1687     struct got_repository *repo)
1688 {
1689 	const struct got_error *err;
1690 	struct got_tag_object *tag;
1691 	struct got_reference *ref = NULL;
1692 
1693 	*id = NULL;
1694 	if (label)
1695 		*label = NULL;
1696 
1697 	if (refs) {
1698 		err = got_repo_object_match_tag(&tag, id_str, obj_type,
1699 		    refs, repo);
1700 		if (err == NULL) {
1701 			*id = got_object_id_dup(
1702 			    got_object_tag_get_object_id(tag));
1703 			if (*id == NULL)
1704 				err = got_error_from_errno("got_object_id_dup");
1705 			else if (label && asprintf(label, "refs/tags/%s",
1706 			    got_object_tag_get_name(tag)) == -1) {
1707 				err = got_error_from_errno("asprintf");
1708 				free(*id);
1709 				*id = NULL;
1710 			}
1711 			got_object_tag_close(tag);
1712 			return err;
1713 		} else if (err->code != GOT_ERR_OBJ_TYPE &&
1714 		    err->code != GOT_ERR_NO_OBJ)
1715 			return err;
1716 	}
1717 
1718 	err = got_ref_open(&ref, repo, id_str, 0);
1719 	if (err == NULL) {
1720 		err = got_ref_resolve(id, repo, ref);
1721 		if (err)
1722 			goto done;
1723 		if (label) {
1724 			*label = strdup(got_ref_get_name(ref));
1725 			if (*label == NULL) {
1726 				err = got_error_from_errno("strdup");
1727 				goto done;
1728 			}
1729 		}
1730 	} else {
1731 		if (err->code != GOT_ERR_NOT_REF &&
1732 		    err->code != GOT_ERR_BAD_REF_NAME)
1733 			goto done;
1734 		err = got_repo_match_object_id_prefix(id, id_str,
1735 		    obj_type, repo);
1736 		if (err) {
1737 			if (err->code == GOT_ERR_BAD_OBJ_ID_STR)
1738 				err = got_error_not_ref(id_str);
1739 			goto done;
1740 		}
1741 		if (label) {
1742 			err = got_object_id_str(label, *id);
1743 			if (*label == NULL) {
1744 				err = got_error_from_errno("strdup");
1745 				goto done;
1746 			}
1747 		}
1748 	}
1749 done:
1750 	if (ref)
1751 		got_ref_close(ref);
1752 	return err;
1753 }
1754 
1755 const struct got_error *
1756 got_repo_object_match_tag(struct got_tag_object **tag, const char *name,
1757     int obj_type, struct got_reflist_head *refs, struct got_repository *repo)
1758 {
1759 	const struct got_error *err = NULL;
1760 	struct got_reflist_entry *re;
1761 	struct got_object_id *tag_id;
1762 	int name_is_absolute = (strncmp(name, "refs/", 5) == 0);
1763 
1764 	*tag = NULL;
1765 
1766 	TAILQ_FOREACH(re, refs, entry) {
1767 		const char *refname;
1768 		refname = got_ref_get_name(re->ref);
1769 		if (got_ref_is_symbolic(re->ref))
1770 			continue;
1771 		if (strncmp(refname, "refs/tags/", 10) != 0)
1772 			continue;
1773 		if (!name_is_absolute)
1774 			refname += strlen("refs/tags/");
1775 		if (strcmp(refname, name) != 0)
1776 			continue;
1777 		err = got_ref_resolve(&tag_id, repo, re->ref);
1778 		if (err)
1779 			break;
1780 		err = got_object_open_as_tag(tag, repo, tag_id);
1781 		free(tag_id);
1782 		if (err)
1783 			break;
1784 		if (obj_type == GOT_OBJ_TYPE_ANY ||
1785 		    got_object_tag_get_object_type(*tag) == obj_type)
1786 			break;
1787 		got_object_tag_close(*tag);
1788 		*tag = NULL;
1789 	}
1790 
1791 	if (err == NULL && *tag == NULL)
1792 		err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1793 		    GOT_OBJ_LABEL_TAG, name);
1794 	return err;
1795 }
1796 
1797 static const struct got_error *
1798 alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
1799     const char *name, mode_t mode, struct got_object_id *blob_id)
1800 {
1801 	const struct got_error *err = NULL;
1802 
1803 	 *new_te = NULL;
1804 
1805 	*new_te = calloc(1, sizeof(**new_te));
1806 	if (*new_te == NULL)
1807 		return got_error_from_errno("calloc");
1808 
1809 	if (strlcpy((*new_te)->name, name, sizeof((*new_te)->name)) >=
1810 	    sizeof((*new_te)->name)) {
1811 		err = got_error(GOT_ERR_NO_SPACE);
1812 		goto done;
1813 	}
1814 
1815 	if (S_ISLNK(mode)) {
1816 		(*new_te)->mode = S_IFLNK;
1817 	} else {
1818 		(*new_te)->mode = S_IFREG;
1819 		(*new_te)->mode |= (mode & (S_IRWXU | S_IRWXG | S_IRWXO));
1820 	}
1821 	memcpy(&(*new_te)->id, blob_id, sizeof((*new_te)->id));
1822 done:
1823 	if (err && *new_te) {
1824 		free(*new_te);
1825 		*new_te = NULL;
1826 	}
1827 	return err;
1828 }
1829 
1830 static const struct got_error *
1831 import_file(struct got_tree_entry **new_te, struct dirent *de,
1832     const char *path, struct got_repository *repo)
1833 {
1834 	const struct got_error *err;
1835 	struct got_object_id *blob_id = NULL;
1836 	char *filepath;
1837 	struct stat sb;
1838 
1839 	if (asprintf(&filepath, "%s%s%s", path,
1840 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1841 		return got_error_from_errno("asprintf");
1842 
1843 	if (lstat(filepath, &sb) != 0) {
1844 		err = got_error_from_errno2("lstat", path);
1845 		goto done;
1846 	}
1847 
1848 	err = got_object_blob_create(&blob_id, filepath, repo);
1849 	if (err)
1850 		goto done;
1851 
1852 	err = alloc_added_blob_tree_entry(new_te, de->d_name, sb.st_mode,
1853 	    blob_id);
1854 done:
1855 	free(filepath);
1856 	if (err)
1857 		free(blob_id);
1858 	return err;
1859 }
1860 
1861 static const struct got_error *
1862 insert_tree_entry(struct got_tree_entry *new_te,
1863     struct got_pathlist_head *paths)
1864 {
1865 	const struct got_error *err = NULL;
1866 	struct got_pathlist_entry *new_pe;
1867 
1868 	err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
1869 	if (err)
1870 		return err;
1871 	if (new_pe == NULL)
1872 		return got_error(GOT_ERR_TREE_DUP_ENTRY);
1873 	return NULL;
1874 }
1875 
1876 static const struct got_error *write_tree(struct got_object_id **,
1877     const char *, struct got_pathlist_head *, struct got_repository *,
1878     got_repo_import_cb progress_cb, void *progress_arg);
1879 
1880 static const struct got_error *
1881 import_subdir(struct got_tree_entry **new_te, struct dirent *de,
1882     const char *path, struct got_pathlist_head *ignores,
1883     struct got_repository *repo,
1884     got_repo_import_cb progress_cb, void *progress_arg)
1885 {
1886 	const struct got_error *err;
1887 	struct got_object_id *id = NULL;
1888 	char *subdirpath;
1889 
1890 	if (asprintf(&subdirpath, "%s%s%s", path,
1891 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1892 		return got_error_from_errno("asprintf");
1893 
1894 	(*new_te) = calloc(1, sizeof(**new_te));
1895 	if (*new_te == NULL)
1896 		return got_error_from_errno("calloc");
1897 	(*new_te)->mode = S_IFDIR;
1898 	if (strlcpy((*new_te)->name, de->d_name, sizeof((*new_te)->name)) >=
1899 	    sizeof((*new_te)->name)) {
1900 		err = got_error(GOT_ERR_NO_SPACE);
1901 		goto done;
1902 	}
1903 	err = write_tree(&id, subdirpath, ignores,  repo,
1904 	    progress_cb, progress_arg);
1905 	if (err)
1906 		goto done;
1907 	memcpy(&(*new_te)->id, id, sizeof((*new_te)->id));
1908 	
1909 done:
1910 	free(id);
1911 	free(subdirpath);
1912 	if (err) {
1913 		free(*new_te);
1914 		*new_te = NULL;
1915 	}
1916 	return err;
1917 }
1918 
1919 static const struct got_error *
1920 write_tree(struct got_object_id **new_tree_id, const char *path_dir,
1921     struct got_pathlist_head *ignores, struct got_repository *repo,
1922     got_repo_import_cb progress_cb, void *progress_arg)
1923 {
1924 	const struct got_error *err = NULL;
1925 	DIR *dir;
1926 	struct dirent *de;
1927 	int nentries;
1928 	struct got_tree_entry *new_te = NULL;
1929 	struct got_pathlist_head paths;
1930 	struct got_pathlist_entry *pe;
1931 
1932 	*new_tree_id = NULL;
1933 
1934 	TAILQ_INIT(&paths);
1935 
1936 	dir = opendir(path_dir);
1937 	if (dir == NULL) {
1938 		err = got_error_from_errno2("opendir", path_dir);
1939 		goto done;
1940 	}
1941 
1942 	nentries = 0;
1943 	while ((de = readdir(dir)) != NULL) {
1944 		int ignore = 0;
1945 		int type;
1946 
1947 		if (strcmp(de->d_name, ".") == 0 ||
1948 		    strcmp(de->d_name, "..") == 0)
1949 			continue;
1950 
1951 		TAILQ_FOREACH(pe, ignores, entry) {
1952 			if (fnmatch(pe->path, de->d_name, 0) == 0) {
1953 				ignore = 1;
1954 				break;
1955 			}
1956 		}
1957 		if (ignore)
1958 			continue;
1959 
1960 		err = got_path_dirent_type(&type, path_dir, de);
1961 		if (err)
1962 			goto done;
1963 
1964 		if (type == DT_DIR) {
1965 			err = import_subdir(&new_te, de, path_dir,
1966 			    ignores, repo, progress_cb, progress_arg);
1967 			if (err) {
1968 				if (err->code != GOT_ERR_NO_TREE_ENTRY)
1969 					goto done;
1970 				err = NULL;
1971 				continue;
1972 			}
1973 		} else if (type == DT_REG || type == DT_LNK) {
1974 			err = import_file(&new_te, de, path_dir, repo);
1975 			if (err)
1976 				goto done;
1977 		} else
1978 			continue;
1979 
1980 		err = insert_tree_entry(new_te, &paths);
1981 		if (err)
1982 			goto done;
1983 		nentries++;
1984 	}
1985 
1986 	if (TAILQ_EMPTY(&paths)) {
1987 		err = got_error_msg(GOT_ERR_NO_TREE_ENTRY,
1988 		    "cannot create tree without any entries");
1989 		goto done;
1990 	}
1991 
1992 	TAILQ_FOREACH(pe, &paths, entry) {
1993 		struct got_tree_entry *te = pe->data;
1994 		char *path;
1995 		if (!S_ISREG(te->mode) && !S_ISLNK(te->mode))
1996 			continue;
1997 		if (asprintf(&path, "%s/%s", path_dir, pe->path) == -1) {
1998 			err = got_error_from_errno("asprintf");
1999 			goto done;
2000 		}
2001 		err = (*progress_cb)(progress_arg, path);
2002 		free(path);
2003 		if (err)
2004 			goto done;
2005 	}
2006 
2007 	err = got_object_tree_create(new_tree_id, &paths, nentries, repo);
2008 done:
2009 	if (dir)
2010 		closedir(dir);
2011 	got_pathlist_free(&paths);
2012 	return err;
2013 }
2014 
2015 const struct got_error *
2016 got_repo_import(struct got_object_id **new_commit_id, const char *path_dir,
2017     const char *logmsg, const char *author, struct got_pathlist_head *ignores,
2018     struct got_repository *repo, got_repo_import_cb progress_cb,
2019     void *progress_arg)
2020 {
2021 	const struct got_error *err;
2022 	struct got_object_id *new_tree_id;
2023 
2024 	err = write_tree(&new_tree_id, path_dir, ignores, repo,
2025 	    progress_cb, progress_arg);
2026 	if (err)
2027 		return err;
2028 
2029 	err = got_object_commit_create(new_commit_id, new_tree_id, NULL, 0,
2030 	    author, time(NULL), author, time(NULL), logmsg, repo);
2031 	free(new_tree_id);
2032 	return err;
2033 }
2034 
2035 const struct got_error *
2036 got_repo_get_loose_object_info(int *nobjects, off_t *ondisk_size,
2037     struct got_repository *repo)
2038 {
2039 	const struct got_error *err = NULL;
2040 	char *path_objects = NULL, *path = NULL;
2041 	DIR *dir = NULL;
2042 	struct got_object_id id;
2043 	int i;
2044 
2045 	*nobjects = 0;
2046 	*ondisk_size = 0;
2047 
2048 	path_objects = got_repo_get_path_objects(repo);
2049 	if (path_objects == NULL)
2050 		return got_error_from_errno("got_repo_get_path_objects");
2051 
2052 	for (i = 0; i <= 0xff; i++) {
2053 		struct dirent *dent;
2054 
2055 		if (asprintf(&path, "%s/%.2x", path_objects, i) == -1) {
2056 			err = got_error_from_errno("asprintf");
2057 			break;
2058 		}
2059 
2060 		dir = opendir(path);
2061 		if (dir == NULL) {
2062 			if (errno == ENOENT) {
2063 				err = NULL;
2064 				continue;
2065 			}
2066 			err = got_error_from_errno2("opendir", path);
2067 			break;
2068 		}
2069 
2070 		while ((dent = readdir(dir)) != NULL) {
2071 			char *id_str;
2072 			int fd;
2073 			struct stat sb;
2074 
2075 			if (strcmp(dent->d_name, ".") == 0 ||
2076 			    strcmp(dent->d_name, "..") == 0)
2077 				continue;
2078 
2079 			if (asprintf(&id_str, "%.2x%s", i, dent->d_name) == -1) {
2080 				err = got_error_from_errno("asprintf");
2081 				goto done;
2082 			}
2083 
2084 			if (!got_parse_sha1_digest(id.sha1, id_str)) {
2085 				free(id_str);
2086 				continue;
2087 			}
2088 			free(id_str);
2089 
2090 			err = got_object_open_loose_fd(&fd, &id, repo);
2091 			if (err)
2092 				goto done;
2093 
2094 			if (fstat(fd, &sb) == -1) {
2095 				err = got_error_from_errno("fstat");
2096 				close(fd);
2097 				goto done;
2098 			}
2099 			(*nobjects)++;
2100 			(*ondisk_size) += sb.st_size;
2101 
2102 			if (close(fd) == -1) {
2103 				err = got_error_from_errno("close");
2104 				goto done;
2105 			}
2106 		}
2107 
2108 		if (closedir(dir) != 0) {
2109 			err = got_error_from_errno("closedir");
2110 			goto done;
2111 		}
2112 		dir = NULL;
2113 
2114 		free(path);
2115 		path = NULL;
2116 	}
2117 done:
2118 	if (dir && closedir(dir) != 0 && err == NULL)
2119 		err = got_error_from_errno("closedir");
2120 
2121 	if (err) {
2122 		*nobjects = 0;
2123 		*ondisk_size = 0;
2124 	}
2125 	free(path_objects);
2126 	free(path);
2127 	return err;
2128 }
2129 
2130 const struct got_error *
2131 got_repo_get_packfile_info(int *npackfiles, int *nobjects,
2132     off_t *total_packsize, struct got_repository *repo)
2133 {
2134 	const struct got_error *err = NULL;
2135 	DIR *packdir = NULL;
2136 	struct dirent *dent;
2137 	struct got_packidx *packidx = NULL;
2138 	char *path_packidx;
2139 	char *path_packfile;
2140 	int packdir_fd;
2141 	struct stat sb;
2142 
2143 	*npackfiles = 0;
2144 	*nobjects = 0;
2145 	*total_packsize = 0;
2146 
2147 	packdir_fd = openat(got_repo_get_fd(repo),
2148 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
2149 	if (packdir_fd == -1) {
2150 		return got_error_from_errno_fmt("openat: %s/%s",
2151 		    got_repo_get_path_git_dir(repo),
2152 		    GOT_OBJECTS_PACK_DIR);
2153 	}
2154 
2155 	packdir = fdopendir(packdir_fd);
2156 	if (packdir == NULL) {
2157 		err = got_error_from_errno("fdopendir");
2158 		goto done;
2159 	}
2160 
2161 	while ((dent = readdir(packdir)) != NULL) {
2162 		if (!got_repo_is_packidx_filename(dent->d_name, dent->d_namlen))
2163 			continue;
2164 
2165 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
2166 		    dent->d_name) == -1) {
2167 			err = got_error_from_errno("asprintf");
2168 			goto done;
2169 		}
2170 
2171 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
2172 		    path_packidx, 0);
2173 		free(path_packidx);
2174 		if (err)
2175 			goto done;
2176 
2177 		if (fstat(packidx->fd, &sb) == -1)
2178 			goto done;
2179 		*total_packsize += sb.st_size;
2180 
2181 		err = got_packidx_get_packfile_path(&path_packfile,
2182 		    packidx->path_packidx);
2183 		if (err)
2184 			goto done;
2185 
2186 		if (fstatat(got_repo_get_fd(repo), path_packfile, &sb,
2187 		    0) == -1) {
2188 			free(path_packfile);
2189 			goto done;
2190 		}
2191 		free(path_packfile);
2192 		*total_packsize += sb.st_size;
2193 
2194 		*nobjects += be32toh(packidx->hdr.fanout_table[0xff]);
2195 
2196 		(*npackfiles)++;
2197 
2198 		got_packidx_close(packidx);
2199 		packidx = NULL;
2200 	}
2201 done:
2202 	if (packidx)
2203 		got_packidx_close(packidx);
2204 	if (packdir && closedir(packdir) != 0 && err == NULL)
2205 		err = got_error_from_errno("closedir");
2206 	if (err) {
2207 		*npackfiles = 0;
2208 		*nobjects = 0;
2209 		*total_packsize = 0;
2210 	}
2211 	return err;
2212 }
2213 
2214 RB_GENERATE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
2215     got_packidx_bloom_filter_cmp);