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