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 	imsg_clear(ibuf);
581 	err = got_privsep_send_stop(imsg_fds[0]);
582 	child_err = got_privsep_wait_for_child(pid);
583 	if (child_err && err == NULL)
584 		err = child_err;
585 done:
586 	if (imsg_fds[0] != -1 && close(imsg_fds[0]) == -1 && err == NULL)
587 		err = got_error_from_errno("close");
588 	if (imsg_fds[1] != -1 && close(imsg_fds[1]) == -1 && err == NULL)
589 		err = got_error_from_errno("close");
590 	if (fd != -1 && close(fd) == -1 && err == NULL)
591 		err = got_error_from_errno2("close", gitconfig_path);
592 	free(ibuf);
593 	return err;
594 }
595 
596 static const struct got_error *
597 read_gitconfig(struct got_repository *repo, const char *global_gitconfig_path)
598 {
599 	const struct got_error *err = NULL;
600 	char *repo_gitconfig_path = NULL;
601 
602 	if (global_gitconfig_path) {
603 		/* Read settings from ~/.gitconfig. */
604 		int dummy_repo_version;
605 		err = parse_gitconfig_file(&dummy_repo_version,
606 		    &repo->global_gitconfig_author_name,
607 		    &repo->global_gitconfig_author_email,
608 		    NULL, NULL, NULL, NULL, NULL, global_gitconfig_path);
609 		if (err)
610 			return err;
611 	}
612 
613 	/* Read repository's .git/config file. */
614 	repo_gitconfig_path = got_repo_get_path_gitconfig(repo);
615 	if (repo_gitconfig_path == NULL)
616 		return got_error_from_errno("got_repo_get_path_gitconfig");
617 
618 	err = parse_gitconfig_file(&repo->gitconfig_repository_format_version,
619 	    &repo->gitconfig_author_name, &repo->gitconfig_author_email,
620 	    &repo->gitconfig_remotes, &repo->ngitconfig_remotes,
621 	    &repo->gitconfig_owner, &repo->extensions, &repo->nextensions,
622 	    repo_gitconfig_path);
623 	if (err)
624 		goto done;
625 done:
626 	free(repo_gitconfig_path);
627 	return err;
628 }
629 
630 static const struct got_error *
631 read_gotconfig(struct got_repository *repo)
632 {
633 	const struct got_error *err = NULL;
634 	char *gotconfig_path;
635 
636 	gotconfig_path = got_repo_get_path_gotconfig(repo);
637 	if (gotconfig_path == NULL)
638 		return got_error_from_errno("got_repo_get_path_gotconfig");
639 
640 	err = got_gotconfig_read(&repo->gotconfig, gotconfig_path);
641 	free(gotconfig_path);
642 	return err;
643 }
644 
645 /* Supported repository format extensions. */
646 static const char *repo_extensions[] = {
647 	"noop",			/* Got supports repository format version 1. */
648 	"preciousObjects",	/* Supported by gotadmin cleanup. */
649 	"worktreeConfig",	/* Got does not care about Git work trees. */
650 };
651 
652 const struct got_error *
653 got_repo_open(struct got_repository **repop, const char *path,
654     const char *global_gitconfig_path)
655 {
656 	struct got_repository *repo = NULL;
657 	const struct got_error *err = NULL;
658 	char *repo_path = NULL;
659 	size_t i;
660 	struct rlimit rl;
661 
662 	*repop = NULL;
663 
664 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
665 		return got_error_from_errno("getrlimit");
666 
667 	repo = calloc(1, sizeof(*repo));
668 	if (repo == NULL) {
669 		err = got_error_from_errno("calloc");
670 		goto done;
671 	}
672 
673 	RB_INIT(&repo->packidx_bloom_filters);
674 
675 	for (i = 0; i < nitems(repo->privsep_children); i++) {
676 		memset(&repo->privsep_children[i], 0,
677 		    sizeof(repo->privsep_children[0]));
678 		repo->privsep_children[i].imsg_fd = -1;
679 	}
680 
681 	err = got_object_cache_init(&repo->objcache,
682 	    GOT_OBJECT_CACHE_TYPE_OBJ);
683 	if (err)
684 		goto done;
685 	err = got_object_cache_init(&repo->treecache,
686 	    GOT_OBJECT_CACHE_TYPE_TREE);
687 	if (err)
688 		goto done;
689 	err = got_object_cache_init(&repo->commitcache,
690 	    GOT_OBJECT_CACHE_TYPE_COMMIT);
691 	if (err)
692 		goto done;
693 	err = got_object_cache_init(&repo->tagcache,
694 	    GOT_OBJECT_CACHE_TYPE_TAG);
695 	if (err)
696 		goto done;
697 	err = got_object_cache_init(&repo->rawcache,
698 	    GOT_OBJECT_CACHE_TYPE_RAW);
699 	if (err)
700 		goto done;
701 
702 	repo->pack_cache_size = GOT_PACK_CACHE_SIZE;
703 	if (repo->pack_cache_size > rl.rlim_cur / 8)
704 		repo->pack_cache_size = rl.rlim_cur / 8;
705 
706 	repo_path = realpath(path, NULL);
707 	if (repo_path == NULL) {
708 		err = got_error_from_errno2("realpath", path);
709 		goto done;
710 	}
711 
712 	for (;;) {
713 		char *parent_path;
714 
715 		err = open_repo(repo, repo_path);
716 		if (err == NULL)
717 			break;
718 		if (err->code != GOT_ERR_NOT_GIT_REPO)
719 			goto done;
720 		if (repo_path[0] == '/' && repo_path[1] == '\0') {
721 			err = got_error(GOT_ERR_NOT_GIT_REPO);
722 			goto done;
723 		}
724 		err = got_path_dirname(&parent_path, repo_path);
725 		if (err)
726 			goto done;
727 		free(repo_path);
728 		repo_path = parent_path;
729 	}
730 
731 	err = read_gotconfig(repo);
732 	if (err)
733 		goto done;
734 
735 	err = read_gitconfig(repo, global_gitconfig_path);
736 	if (err)
737 		goto done;
738 	if (repo->gitconfig_repository_format_version != 0)
739 		err = got_error_path(path, GOT_ERR_GIT_REPO_FORMAT);
740 	for (i = 0; i < repo->nextensions; i++) {
741 		char *ext = repo->extensions[i];
742 		int j, supported = 0;
743 		for (j = 0; j < nitems(repo_extensions); j++) {
744 			if (strcmp(ext, repo_extensions[j]) == 0) {
745 				supported = 1;
746 				break;
747 			}
748 		}
749 		if (!supported) {
750 			err = got_error_path(ext, GOT_ERR_GIT_REPO_EXT);
751 			goto done;
752 		}
753 	}
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 	size_t i;
769 
770 	for (i = 0; i < repo->pack_cache_size; i++) {
771 		if (repo->packidx_cache[i] == NULL)
772 			break;
773 		got_packidx_close(repo->packidx_cache[i]);
774 	}
775 
776 	while ((bf = RB_MIN(got_packidx_bloom_filter_tree,
777 	    &repo->packidx_bloom_filters))) {
778 		RB_REMOVE(got_packidx_bloom_filter_tree,
779 		    &repo->packidx_bloom_filters, bf);
780 		free(bf->bloom);
781 		free(bf);
782 	}
783 
784 	for (i = 0; i < repo->pack_cache_size; i++) {
785 		if (repo->packs[i].path_packfile == NULL)
786 			break;
787 		got_pack_close(&repo->packs[i]);
788 	}
789 
790 	free(repo->path);
791 	free(repo->path_git_dir);
792 
793 	got_object_cache_close(&repo->objcache);
794 	got_object_cache_close(&repo->treecache);
795 	got_object_cache_close(&repo->commitcache);
796 	got_object_cache_close(&repo->tagcache);
797 	got_object_cache_close(&repo->rawcache);
798 
799 	for (i = 0; i < nitems(repo->privsep_children); i++) {
800 		if (repo->privsep_children[i].imsg_fd == -1)
801 			continue;
802 		imsg_clear(repo->privsep_children[i].ibuf);
803 		free(repo->privsep_children[i].ibuf);
804 		err = got_privsep_send_stop(repo->privsep_children[i].imsg_fd);
805 		child_err = got_privsep_wait_for_child(
806 		    repo->privsep_children[i].pid);
807 		if (child_err && err == NULL)
808 			err = child_err;
809 		if (close(repo->privsep_children[i].imsg_fd) == -1 &&
810 		    err == NULL)
811 			err = got_error_from_errno("close");
812 	}
813 
814 	if (repo->gitdir_fd != -1 && close(repo->gitdir_fd) == -1 &&
815 	    err == NULL)
816 		err = got_error_from_errno("close");
817 
818 	if (repo->gotconfig)
819 		got_gotconfig_free(repo->gotconfig);
820 	free(repo->gitconfig_author_name);
821 	free(repo->gitconfig_author_email);
822 	for (i = 0; i < repo->ngitconfig_remotes; i++)
823 		got_repo_free_remote_repo_data(&repo->gitconfig_remotes[i]);
824 	free(repo->gitconfig_remotes);
825 	for (i = 0; i < repo->nextensions; i++)
826 		free(repo->extensions[i]);
827 	free(repo->extensions);
828 	free(repo);
829 
830 	return err;
831 }
832 
833 void
834 got_repo_free_remote_repo_data(struct got_remote_repo *repo)
835 {
836 	int i;
837 
838 	free(repo->name);
839 	repo->name = NULL;
840 	free(repo->fetch_url);
841 	repo->fetch_url = NULL;
842 	free(repo->send_url);
843 	repo->send_url = NULL;
844 	for (i = 0; i < repo->nfetch_branches; i++)
845 		free(repo->fetch_branches[i]);
846 	free(repo->fetch_branches);
847 	repo->fetch_branches = NULL;
848 	repo->nfetch_branches = 0;
849 	for (i = 0; i < repo->nsend_branches; i++)
850 		free(repo->send_branches[i]);
851 	free(repo->send_branches);
852 	repo->send_branches = NULL;
853 	repo->nsend_branches = 0;
854 }
855 
856 const struct got_error *
857 got_repo_map_path(char **in_repo_path, struct got_repository *repo,
858     const char *input_path)
859 {
860 	const struct got_error *err = NULL;
861 	const char *repo_abspath = NULL;
862 	size_t repolen, len;
863 	char *canonpath, *path = NULL;
864 
865 	*in_repo_path = NULL;
866 
867 	canonpath = strdup(input_path);
868 	if (canonpath == NULL) {
869 		err = got_error_from_errno("strdup");
870 		goto done;
871 	}
872 	err = got_canonpath(input_path, canonpath, strlen(canonpath) + 1);
873 	if (err)
874 		goto done;
875 
876 	repo_abspath = got_repo_get_path(repo);
877 
878 	if (canonpath[0] == '\0') {
879 		path = strdup(canonpath);
880 		if (path == NULL) {
881 			err = got_error_from_errno("strdup");
882 			goto done;
883 		}
884 	} else {
885 		path = realpath(canonpath, NULL);
886 		if (path == NULL) {
887 			if (errno != ENOENT) {
888 				err = got_error_from_errno2("realpath",
889 				    canonpath);
890 				goto done;
891 			}
892 			/*
893 			 * Path is not on disk.
894 			 * Assume it is already relative to repository root.
895 			 */
896 			path = strdup(canonpath);
897 			if (path == NULL) {
898 				err = got_error_from_errno("strdup");
899 				goto done;
900 			}
901 		}
902 
903 		repolen = strlen(repo_abspath);
904 		len = strlen(path);
905 
906 
907 		if (strcmp(path, repo_abspath) == 0) {
908 			free(path);
909 			path = strdup("");
910 			if (path == NULL) {
911 				err = got_error_from_errno("strdup");
912 				goto done;
913 			}
914 		} else if (len > repolen &&
915 		    got_path_is_child(path, repo_abspath, repolen)) {
916 			/* Matched an on-disk path inside repository. */
917 			if (got_repo_is_bare(repo)) {
918 				/*
919 				 * Matched an on-disk path inside repository
920 				 * database. Treat input as repository-relative.
921 				 */
922 				free(path);
923 				path = canonpath;
924 				canonpath = NULL;
925 			} else {
926 				char *child;
927 				/* Strip common prefix with repository path. */
928 				err = got_path_skip_common_ancestor(&child,
929 				    repo_abspath, path);
930 				if (err)
931 					goto done;
932 				free(path);
933 				path = child;
934 			}
935 		} else {
936 			/*
937 			 * Matched unrelated on-disk path.
938 			 * Treat input as repository-relative.
939 			 */
940 			free(path);
941 			path = canonpath;
942 			canonpath = NULL;
943 		}
944 	}
945 
946 	/* Make in-repository path absolute */
947 	if (path[0] != '/') {
948 		char *abspath;
949 		if (asprintf(&abspath, "/%s", path) == -1) {
950 			err = got_error_from_errno("asprintf");
951 			goto done;
952 		}
953 		free(path);
954 		path = abspath;
955 	}
956 
957 done:
958 	free(canonpath);
959 	if (err)
960 		free(path);
961 	else
962 		*in_repo_path = path;
963 	return err;
964 }
965 
966 static const struct got_error *
967 cache_packidx(struct got_repository *repo, struct got_packidx *packidx,
968     const char *path_packidx)
969 {
970 	const struct got_error *err = NULL;
971 	size_t i;
972 
973 	for (i = 0; i < repo->pack_cache_size; i++) {
974 		if (repo->packidx_cache[i] == NULL)
975 			break;
976 		if (strcmp(repo->packidx_cache[i]->path_packidx,
977 		    path_packidx) == 0) {
978 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
979 		}
980 	}
981 	if (i == repo->pack_cache_size) {
982 		i = repo->pack_cache_size - 1;
983 		err = got_packidx_close(repo->packidx_cache[i]);
984 		if (err)
985 			return err;
986 	}
987 
988 	repo->packidx_cache[i] = packidx;
989 
990 	return NULL;
991 }
992 
993 int
994 got_repo_is_packidx_filename(const char *name, size_t len)
995 {
996 	if (len != GOT_PACKIDX_NAMELEN)
997 		return 0;
998 
999 	if (strncmp(name, GOT_PACK_PREFIX, strlen(GOT_PACK_PREFIX)) != 0)
1000 		return 0;
1001 
1002 	if (strcmp(name + strlen(GOT_PACK_PREFIX) +
1003 	    SHA1_DIGEST_STRING_LENGTH - 1, GOT_PACKIDX_SUFFIX) != 0)
1004 		return 0;
1005 
1006 	return 1;
1007 }
1008 
1009 static struct got_packidx_bloom_filter *
1010 get_packidx_bloom_filter(struct got_repository *repo,
1011     const char *path, size_t path_len)
1012 {
1013 	struct got_packidx_bloom_filter key;
1014 
1015 	if (strlcpy(key.path, path, sizeof(key.path)) >= sizeof(key.path))
1016 		return NULL; /* XXX */
1017 	key.path_len = path_len;
1018 
1019 	return RB_FIND(got_packidx_bloom_filter_tree,
1020 	    &repo->packidx_bloom_filters, &key);
1021 }
1022 
1023 static int
1024 check_packidx_bloom_filter(struct got_repository *repo,
1025     const char *path_packidx, struct got_object_id *id)
1026 {
1027 	struct got_packidx_bloom_filter *bf;
1028 
1029 	bf = get_packidx_bloom_filter(repo, path_packidx, strlen(path_packidx));
1030 	if (bf)
1031 		return bloom_check(bf->bloom, id->sha1, sizeof(id->sha1));
1032 
1033 	/* No bloom filter means this pack index must be searched. */
1034 	return 1;
1035 }
1036 
1037 static const struct got_error *
1038 add_packidx_bloom_filter(struct got_repository *repo,
1039     struct got_packidx *packidx, const char *path_packidx)
1040 {
1041 	int i, nobjects = be32toh(packidx->hdr.fanout_table[0xff]);
1042 	struct got_packidx_bloom_filter *bf;
1043 	size_t len;
1044 
1045 	/*
1046 	 * Don't use bloom filters for very large pack index files.
1047 	 * Large pack files will contain a relatively large fraction
1048 	 * of our objects so we will likely need to visit them anyway.
1049 	 * The more objects a pack file contains the higher the probability
1050 	 * of a false-positive match from the bloom filter. And reading
1051 	 * all object IDs from a large pack index file can be expensive.
1052 	 */
1053 	if (nobjects > 100000) /* cut-off at about 2MB, at 20 bytes per ID */
1054 		return NULL;
1055 
1056 	/* Do we already have a filter for this pack index? */
1057 	if (get_packidx_bloom_filter(repo, path_packidx,
1058 	    strlen(path_packidx)) != NULL)
1059 		return NULL;
1060 
1061 	bf = calloc(1, sizeof(*bf));
1062 	if (bf == NULL)
1063 		return got_error_from_errno("calloc");
1064 	bf->bloom = calloc(1, sizeof(*bf->bloom));
1065 	if (bf->bloom == NULL) {
1066 		free(bf);
1067 		return got_error_from_errno("calloc");
1068 	}
1069 	
1070 	len = strlcpy(bf->path, path_packidx, sizeof(bf->path));
1071 	if (len >= sizeof(bf->path)) {
1072 		free(bf->bloom);
1073 		free(bf);
1074 		return got_error(GOT_ERR_NO_SPACE);
1075 	}
1076 	bf->path_len = len;
1077 
1078 	/* Minimum size supported by our bloom filter is 1000 entries. */
1079 	bloom_init(bf->bloom, nobjects < 1000 ? 1000 : nobjects, 0.1);
1080 	for (i = 0; i < nobjects; i++) {
1081 		struct got_packidx_object_id *id;
1082 		id = &packidx->hdr.sorted_ids[i];
1083 		bloom_add(bf->bloom, id->sha1, sizeof(id->sha1));
1084 	}
1085 
1086 	RB_INSERT(got_packidx_bloom_filter_tree,
1087 	    &repo->packidx_bloom_filters, bf);
1088 	return NULL;
1089 }
1090 
1091 const struct got_error *
1092 got_repo_search_packidx(struct got_packidx **packidx, int *idx,
1093     struct got_repository *repo, struct got_object_id *id)
1094 {
1095 	const struct got_error *err;
1096 	DIR *packdir = NULL;
1097 	struct dirent *dent;
1098 	char *path_packidx;
1099 	size_t i;
1100 	int packdir_fd;
1101 
1102 	/* Search pack index cache. */
1103 	for (i = 0; i < repo->pack_cache_size; i++) {
1104 		if (repo->packidx_cache[i] == NULL)
1105 			break;
1106 		if (!check_packidx_bloom_filter(repo,
1107 		    repo->packidx_cache[i]->path_packidx, id))
1108 			continue; /* object will not be found in this index */
1109 		*idx = got_packidx_get_object_idx(repo->packidx_cache[i], id);
1110 		if (*idx != -1) {
1111 			*packidx = repo->packidx_cache[i];
1112 			/*
1113 			 * Move this cache entry to the front. Repeatedly
1114 			 * searching a wrong pack index can be expensive.
1115 			 */
1116 			if (i > 0) {
1117 				memmove(&repo->packidx_cache[1],
1118 				    &repo->packidx_cache[0],
1119 				    i * sizeof(repo->packidx_cache[0]));
1120 				repo->packidx_cache[0] = *packidx;
1121 			}
1122 			return NULL;
1123 		}
1124 	}
1125 	/* No luck. Search the filesystem. */
1126 
1127 	packdir_fd = openat(got_repo_get_fd(repo),
1128 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
1129 	if (packdir_fd == -1) {
1130 		if (errno == ENOENT)
1131 			err = got_error_no_obj(id);
1132 		else
1133 			err = got_error_from_errno_fmt("openat: %s/%s",
1134 			    got_repo_get_path_git_dir(repo),
1135 			    GOT_OBJECTS_PACK_DIR);
1136 		goto done;
1137 	}
1138 
1139 	packdir = fdopendir(packdir_fd);
1140 	if (packdir == NULL) {
1141 		err = got_error_from_errno("fdopendir");
1142 		goto done;
1143 	}
1144 
1145 	while ((dent = readdir(packdir)) != NULL) {
1146 		int is_cached = 0;
1147 
1148 		if (!got_repo_is_packidx_filename(dent->d_name, dent->d_namlen))
1149 			continue;
1150 
1151 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1152 		    dent->d_name) == -1) {
1153 			err = got_error_from_errno("asprintf");
1154 			goto done;
1155 		}
1156 
1157 		if (!check_packidx_bloom_filter(repo, path_packidx, id)) {
1158 			free(path_packidx);
1159 			continue; /* object will not be found in this index */
1160 		}
1161 
1162 		for (i = 0; i < repo->pack_cache_size; i++) {
1163 			if (repo->packidx_cache[i] == NULL)
1164 				break;
1165 			if (strcmp(repo->packidx_cache[i]->path_packidx,
1166 			    path_packidx) == 0) {
1167 				is_cached = 1;
1168 				break;
1169 			}
1170 		}
1171 		if (is_cached) {
1172 			free(path_packidx);
1173 			continue; /* already searched */
1174 		}
1175 
1176 		err = got_packidx_open(packidx, got_repo_get_fd(repo),
1177 		    path_packidx, 0);
1178 		if (err) {
1179 			free(path_packidx);
1180 			goto done;
1181 		}
1182 
1183 		err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1184 		if (err) {
1185 			free(path_packidx);
1186 			goto done;
1187 		}
1188 
1189 		err = cache_packidx(repo, *packidx, path_packidx);
1190 		free(path_packidx);
1191 		if (err)
1192 			goto done;
1193 
1194 		*idx = got_packidx_get_object_idx(*packidx, id);
1195 		if (*idx != -1) {
1196 			err = NULL; /* found the object */
1197 			goto done;
1198 		}
1199 	}
1200 
1201 	err = got_error_no_obj(id);
1202 done:
1203 	if (packdir && closedir(packdir) != 0 && err == NULL)
1204 		err = got_error_from_errno("closedir");
1205 	return err;
1206 }
1207 
1208 static const struct got_error *
1209 read_packfile_hdr(int fd, struct got_packidx *packidx)
1210 {
1211 	const struct got_error *err = NULL;
1212 	uint32_t totobj = be32toh(packidx->hdr.fanout_table[0xff]);
1213 	struct got_packfile_hdr hdr;
1214 	ssize_t n;
1215 
1216 	n = read(fd, &hdr, sizeof(hdr));
1217 	if (n < 0)
1218 		return got_error_from_errno("read");
1219 	if (n != sizeof(hdr))
1220 		return got_error(GOT_ERR_BAD_PACKFILE);
1221 
1222 	if (be32toh(hdr.signature) != GOT_PACKFILE_SIGNATURE ||
1223 	    be32toh(hdr.version) != GOT_PACKFILE_VERSION ||
1224 	    be32toh(hdr.nobjects) != totobj)
1225 		err = got_error(GOT_ERR_BAD_PACKFILE);
1226 
1227 	return err;
1228 }
1229 
1230 static const struct got_error *
1231 open_packfile(int *fd, struct got_repository *repo,
1232     const char *relpath, struct got_packidx *packidx)
1233 {
1234 	const struct got_error *err = NULL;
1235 
1236 	*fd = openat(got_repo_get_fd(repo), relpath, O_RDONLY | O_NOFOLLOW);
1237 	if (*fd == -1)
1238 		return got_error_from_errno_fmt("openat: %s/%s",
1239 		    got_repo_get_path_git_dir(repo), relpath);
1240 
1241 	if (packidx) {
1242 		err = read_packfile_hdr(*fd, packidx);
1243 		if (err) {
1244 			close(*fd);
1245 			*fd = -1;
1246 		}
1247 	}
1248 
1249 	return err;
1250 }
1251 
1252 const struct got_error *
1253 got_repo_cache_pack(struct got_pack **packp, struct got_repository *repo,
1254     const char *path_packfile, struct got_packidx *packidx)
1255 {
1256 	const struct got_error *err = NULL;
1257 	struct got_pack *pack = NULL;
1258 	struct stat sb;
1259 	size_t i;
1260 
1261 	if (packp)
1262 		*packp = NULL;
1263 
1264 	for (i = 0; i < repo->pack_cache_size; i++) {
1265 		pack = &repo->packs[i];
1266 		if (pack->path_packfile == NULL)
1267 			break;
1268 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1269 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
1270 	}
1271 
1272 	if (i == repo->pack_cache_size) {
1273 		err = got_pack_close(&repo->packs[i - 1]);
1274 		if (err)
1275 			return err;
1276 		memmove(&repo->packs[1], &repo->packs[0],
1277 		    sizeof(repo->packs) - sizeof(repo->packs[0]));
1278 		i = 0;
1279 	}
1280 
1281 	pack = &repo->packs[i];
1282 
1283 	pack->path_packfile = strdup(path_packfile);
1284 	if (pack->path_packfile == NULL) {
1285 		err = got_error_from_errno("strdup");
1286 		goto done;
1287 	}
1288 
1289 	err = open_packfile(&pack->fd, repo, path_packfile, packidx);
1290 	if (err)
1291 		goto done;
1292 
1293 	if (fstat(pack->fd, &sb) != 0) {
1294 		err = got_error_from_errno("fstat");
1295 		goto done;
1296 	}
1297 	pack->filesize = sb.st_size;
1298 
1299 	pack->privsep_child = NULL;
1300 
1301 #ifndef GOT_PACK_NO_MMAP
1302 	pack->map = mmap(NULL, pack->filesize, PROT_READ, MAP_PRIVATE,
1303 	    pack->fd, 0);
1304 	if (pack->map == MAP_FAILED) {
1305 		if (errno != ENOMEM) {
1306 			err = got_error_from_errno("mmap");
1307 			goto done;
1308 		}
1309 		pack->map = NULL; /* fall back to read(2) */
1310 	}
1311 #endif
1312 done:
1313 	if (err) {
1314 		if (pack) {
1315 			free(pack->path_packfile);
1316 			memset(pack, 0, sizeof(*pack));
1317 		}
1318 	} else if (packp)
1319 		*packp = pack;
1320 	return err;
1321 }
1322 
1323 struct got_pack *
1324 got_repo_get_cached_pack(struct got_repository *repo, const char *path_packfile)
1325 {
1326 	struct got_pack *pack = NULL;
1327 	size_t i;
1328 
1329 	for (i = 0; i < repo->pack_cache_size; i++) {
1330 		pack = &repo->packs[i];
1331 		if (pack->path_packfile == NULL)
1332 			break;
1333 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1334 			return pack;
1335 	}
1336 
1337 	return NULL;
1338 }
1339 
1340 const struct got_error *
1341 got_repo_init(const char *repo_path)
1342 {
1343 	const struct got_error *err = NULL;
1344 	const char *dirnames[] = {
1345 		GOT_OBJECTS_DIR,
1346 		GOT_OBJECTS_PACK_DIR,
1347 		GOT_REFS_DIR,
1348 	};
1349 	const char *description_str = "Unnamed repository; "
1350 	    "edit this file 'description' to name the repository.";
1351 	const char *headref_str = "ref: refs/heads/main";
1352 	const char *gitconfig_str = "[core]\n"
1353 	    "\trepositoryformatversion = 0\n"
1354 	    "\tfilemode = true\n"
1355 	    "\tbare = true\n";
1356 	char *path;
1357 	size_t i;
1358 
1359 	if (!got_path_dir_is_empty(repo_path))
1360 		return got_error(GOT_ERR_DIR_NOT_EMPTY);
1361 
1362 	for (i = 0; i < nitems(dirnames); i++) {
1363 		if (asprintf(&path, "%s/%s", repo_path, dirnames[i]) == -1) {
1364 			return got_error_from_errno("asprintf");
1365 		}
1366 		err = got_path_mkdir(path);
1367 		free(path);
1368 		if (err)
1369 			return err;
1370 	}
1371 
1372 	if (asprintf(&path, "%s/%s", repo_path, "description") == -1)
1373 		return got_error_from_errno("asprintf");
1374 	err = got_path_create_file(path, description_str);
1375 	free(path);
1376 	if (err)
1377 		return err;
1378 
1379 	if (asprintf(&path, "%s/%s", repo_path, GOT_HEAD_FILE) == -1)
1380 		return got_error_from_errno("asprintf");
1381 	err = got_path_create_file(path, headref_str);
1382 	free(path);
1383 	if (err)
1384 		return err;
1385 
1386 	if (asprintf(&path, "%s/%s", repo_path, "config") == -1)
1387 		return got_error_from_errno("asprintf");
1388 	err = got_path_create_file(path, gitconfig_str);
1389 	free(path);
1390 	if (err)
1391 		return err;
1392 
1393 	return NULL;
1394 }
1395 
1396 static const struct got_error *
1397 match_packed_object(struct got_object_id **unique_id,
1398     struct got_repository *repo, const char *id_str_prefix, int obj_type)
1399 {
1400 	const struct got_error *err = NULL;
1401 	DIR *packdir = NULL;
1402 	struct dirent *dent;
1403 	char *path_packidx;
1404 	struct got_object_id_queue matched_ids;
1405 	int packdir_fd;
1406 
1407 	STAILQ_INIT(&matched_ids);
1408 
1409 	packdir_fd = openat(got_repo_get_fd(repo),
1410 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
1411 	if (packdir_fd == -1) {
1412 		if (errno != ENOENT)
1413 			err = got_error_from_errno2("openat", GOT_OBJECTS_PACK_DIR);
1414 		goto done;
1415 	}
1416 
1417 	packdir = fdopendir(packdir_fd);
1418 	if (packdir == NULL) {
1419 		err = got_error_from_errno("fdopendir");
1420 		goto done;
1421 	}
1422 
1423 	while ((dent = readdir(packdir)) != NULL) {
1424 		struct got_packidx *packidx;
1425 		struct got_object_qid *qid;
1426 
1427 		if (!got_repo_is_packidx_filename(dent->d_name, dent->d_namlen))
1428 			continue;
1429 
1430 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1431 		    dent->d_name) == -1) {
1432 			err = got_error_from_errno("strdup");
1433 			break;
1434 		}
1435 
1436 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1437 		    path_packidx, 0);
1438 		free(path_packidx);
1439 		if (err)
1440 			break;
1441 
1442 		err = got_packidx_match_id_str_prefix(&matched_ids,
1443 		    packidx, id_str_prefix);
1444 		if (err) {
1445 			got_packidx_close(packidx);
1446 			break;
1447 		}
1448 		err = got_packidx_close(packidx);
1449 		if (err)
1450 			break;
1451 
1452 		STAILQ_FOREACH(qid, &matched_ids, entry) {
1453 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1454 				int matched_type;
1455 				err = got_object_get_type(&matched_type, repo,
1456 				    qid->id);
1457 				if (err)
1458 					goto done;
1459 				if (matched_type != obj_type)
1460 					continue;
1461 			}
1462 			if (*unique_id == NULL) {
1463 				*unique_id = got_object_id_dup(qid->id);
1464 				if (*unique_id == NULL) {
1465 					err = got_error_from_errno("malloc");
1466 					goto done;
1467 				}
1468 			} else {
1469 				if (got_object_id_cmp(*unique_id, qid->id) == 0)
1470 					continue; /* packed multiple times */
1471 				err = got_error(GOT_ERR_AMBIGUOUS_ID);
1472 				goto done;
1473 			}
1474 		}
1475 	}
1476 done:
1477 	got_object_id_queue_free(&matched_ids);
1478 	if (packdir && closedir(packdir) != 0 && err == NULL)
1479 		err = got_error_from_errno("closedir");
1480 	if (err) {
1481 		free(*unique_id);
1482 		*unique_id = NULL;
1483 	}
1484 	return err;
1485 }
1486 
1487 static const struct got_error *
1488 match_loose_object(struct got_object_id **unique_id, const char *path_objects,
1489     const char *object_dir, const char *id_str_prefix, int obj_type,
1490     struct got_repository *repo)
1491 {
1492 	const struct got_error *err = NULL;
1493 	char *path;
1494 	DIR *dir = NULL;
1495 	struct dirent *dent;
1496 	struct got_object_id id;
1497 
1498 	if (asprintf(&path, "%s/%s", path_objects, object_dir) == -1) {
1499 		err = got_error_from_errno("asprintf");
1500 		goto done;
1501 	}
1502 
1503 	dir = opendir(path);
1504 	if (dir == NULL) {
1505 		if (errno == ENOENT) {
1506 			err = NULL;
1507 			goto done;
1508 		}
1509 		err = got_error_from_errno2("opendir", path);
1510 		goto done;
1511 	}
1512 	while ((dent = readdir(dir)) != NULL) {
1513 		char *id_str;
1514 		int cmp;
1515 
1516 		if (strcmp(dent->d_name, ".") == 0 ||
1517 		    strcmp(dent->d_name, "..") == 0)
1518 			continue;
1519 
1520 		if (asprintf(&id_str, "%s%s", object_dir, dent->d_name) == -1) {
1521 			err = got_error_from_errno("asprintf");
1522 			goto done;
1523 		}
1524 
1525 		if (!got_parse_sha1_digest(id.sha1, id_str))
1526 			continue;
1527 
1528 		/*
1529 		 * Directory entries do not necessarily appear in
1530 		 * sorted order, so we must iterate over all of them.
1531 		 */
1532 		cmp = strncmp(id_str, id_str_prefix, strlen(id_str_prefix));
1533 		if (cmp != 0) {
1534 			free(id_str);
1535 			continue;
1536 		}
1537 
1538 		if (*unique_id == NULL) {
1539 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1540 				int matched_type;
1541 				err = got_object_get_type(&matched_type, repo,
1542 				    &id);
1543 				if (err)
1544 					goto done;
1545 				if (matched_type != obj_type)
1546 					continue;
1547 			}
1548 			*unique_id = got_object_id_dup(&id);
1549 			if (*unique_id == NULL) {
1550 				err = got_error_from_errno("got_object_id_dup");
1551 				free(id_str);
1552 				goto done;
1553 			}
1554 		} else {
1555 			if (got_object_id_cmp(*unique_id, &id) == 0)
1556 				continue; /* both packed and loose */
1557 			err = got_error(GOT_ERR_AMBIGUOUS_ID);
1558 			free(id_str);
1559 			goto done;
1560 		}
1561 	}
1562 done:
1563 	if (dir && closedir(dir) != 0 && err == NULL)
1564 		err = got_error_from_errno("closedir");
1565 	if (err) {
1566 		free(*unique_id);
1567 		*unique_id = NULL;
1568 	}
1569 	free(path);
1570 	return err;
1571 }
1572 
1573 const struct got_error *
1574 got_repo_match_object_id_prefix(struct got_object_id **id,
1575     const char *id_str_prefix, int obj_type, struct got_repository *repo)
1576 {
1577 	const struct got_error *err = NULL;
1578 	char *path_objects = got_repo_get_path_objects(repo);
1579 	char *object_dir = NULL;
1580 	size_t len;
1581 	int i;
1582 
1583 	*id = NULL;
1584 
1585 	for (i = 0; i < strlen(id_str_prefix); i++) {
1586 		if (isxdigit((unsigned char)id_str_prefix[i]))
1587 			continue;
1588 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1589 	}
1590 
1591 	len = strlen(id_str_prefix);
1592 	if (len >= 2) {
1593 		err = match_packed_object(id, repo, id_str_prefix, obj_type);
1594 		if (err)
1595 			goto done;
1596 		object_dir = strndup(id_str_prefix, 2);
1597 		if (object_dir == NULL) {
1598 			err = got_error_from_errno("strdup");
1599 			goto done;
1600 		}
1601 		err = match_loose_object(id, path_objects, object_dir,
1602 		    id_str_prefix, obj_type, repo);
1603 	} else if (len == 1) {
1604 		int i;
1605 		for (i = 0; i < 0xf; i++) {
1606 			if (asprintf(&object_dir, "%s%.1x", id_str_prefix, i)
1607 			    == -1) {
1608 				err = got_error_from_errno("asprintf");
1609 				goto done;
1610 			}
1611 			err = match_packed_object(id, repo, object_dir,
1612 			    obj_type);
1613 			if (err)
1614 				goto done;
1615 			err = match_loose_object(id, path_objects, object_dir,
1616 			    id_str_prefix, obj_type, repo);
1617 			if (err)
1618 				goto done;
1619 		}
1620 	} else {
1621 		err = got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1622 		goto done;
1623 	}
1624 done:
1625 	free(object_dir);
1626 	if (err) {
1627 		free(*id);
1628 		*id = NULL;
1629 	} else if (*id == NULL) {
1630 		switch (obj_type) {
1631 		case GOT_OBJ_TYPE_BLOB:
1632 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1633 			    GOT_OBJ_LABEL_BLOB, id_str_prefix);
1634 			break;
1635 		case GOT_OBJ_TYPE_TREE:
1636 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1637 			    GOT_OBJ_LABEL_TREE, id_str_prefix);
1638 			break;
1639 		case GOT_OBJ_TYPE_COMMIT:
1640 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1641 			    GOT_OBJ_LABEL_COMMIT, id_str_prefix);
1642 			break;
1643 		case GOT_OBJ_TYPE_TAG:
1644 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1645 			    GOT_OBJ_LABEL_TAG, id_str_prefix);
1646 			break;
1647 		default:
1648 			err = got_error_path(id_str_prefix, GOT_ERR_NO_OBJ);
1649 			break;
1650 		}
1651 	}
1652 
1653 	return err;
1654 }
1655 
1656 const struct got_error *
1657 got_repo_match_object_id(struct got_object_id **id, char **label,
1658     const char *id_str, int obj_type, struct got_reflist_head *refs,
1659     struct got_repository *repo)
1660 {
1661 	const struct got_error *err;
1662 	struct got_tag_object *tag;
1663 	struct got_reference *ref = NULL;
1664 
1665 	*id = NULL;
1666 	if (label)
1667 		*label = NULL;
1668 
1669 	if (refs) {
1670 		err = got_repo_object_match_tag(&tag, id_str, obj_type,
1671 		    refs, repo);
1672 		if (err == NULL) {
1673 			*id = got_object_id_dup(
1674 			    got_object_tag_get_object_id(tag));
1675 			if (*id == NULL)
1676 				err = got_error_from_errno("got_object_id_dup");
1677 			else if (label && asprintf(label, "refs/tags/%s",
1678 			    got_object_tag_get_name(tag)) == -1) {
1679 				err = got_error_from_errno("asprintf");
1680 				free(*id);
1681 				*id = NULL;
1682 			}
1683 			got_object_tag_close(tag);
1684 			return err;
1685 		} else if (err->code != GOT_ERR_OBJ_TYPE &&
1686 		    err->code != GOT_ERR_NO_OBJ)
1687 			return err;
1688 	}
1689 
1690 	err = got_repo_match_object_id_prefix(id, id_str, obj_type, repo);
1691 	if (err) {
1692 		if (err->code != GOT_ERR_BAD_OBJ_ID_STR)
1693 			return err;
1694 		err = got_ref_open(&ref, repo, id_str, 0);
1695 		if (err != NULL)
1696 			goto done;
1697 		if (label) {
1698 			*label = strdup(got_ref_get_name(ref));
1699 			if (*label == NULL) {
1700 				err = got_error_from_errno("strdup");
1701 				goto done;
1702 			}
1703 		}
1704 		err = got_ref_resolve(id, repo, ref);
1705 	} else if (label) {
1706 		err = got_object_id_str(label, *id);
1707 		if (*label == NULL) {
1708 			err = got_error_from_errno("strdup");
1709 			goto done;
1710 		}
1711 	}
1712 done:
1713 	if (ref)
1714 		got_ref_close(ref);
1715 	return err;
1716 }
1717 
1718 const struct got_error *
1719 got_repo_object_match_tag(struct got_tag_object **tag, const char *name,
1720     int obj_type, struct got_reflist_head *refs, struct got_repository *repo)
1721 {
1722 	const struct got_error *err = NULL;
1723 	struct got_reflist_entry *re;
1724 	struct got_object_id *tag_id;
1725 	int name_is_absolute = (strncmp(name, "refs/", 5) == 0);
1726 
1727 	*tag = NULL;
1728 
1729 	TAILQ_FOREACH(re, refs, entry) {
1730 		const char *refname;
1731 		refname = got_ref_get_name(re->ref);
1732 		if (got_ref_is_symbolic(re->ref))
1733 			continue;
1734 		if (strncmp(refname, "refs/tags/", 10) != 0)
1735 			continue;
1736 		if (!name_is_absolute)
1737 			refname += strlen("refs/tags/");
1738 		if (strcmp(refname, name) != 0)
1739 			continue;
1740 		err = got_ref_resolve(&tag_id, repo, re->ref);
1741 		if (err)
1742 			break;
1743 		err = got_object_open_as_tag(tag, repo, tag_id);
1744 		free(tag_id);
1745 		if (err)
1746 			break;
1747 		if (obj_type == GOT_OBJ_TYPE_ANY ||
1748 		    got_object_tag_get_object_type(*tag) == obj_type)
1749 			break;
1750 		got_object_tag_close(*tag);
1751 		*tag = NULL;
1752 	}
1753 
1754 	if (err == NULL && *tag == NULL)
1755 		err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1756 		    GOT_OBJ_LABEL_TAG, name);
1757 	return err;
1758 }
1759 
1760 static const struct got_error *
1761 alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
1762     const char *name, mode_t mode, struct got_object_id *blob_id)
1763 {
1764 	const struct got_error *err = NULL;
1765 
1766 	 *new_te = NULL;
1767 
1768 	*new_te = calloc(1, sizeof(**new_te));
1769 	if (*new_te == NULL)
1770 		return got_error_from_errno("calloc");
1771 
1772 	if (strlcpy((*new_te)->name, name, sizeof((*new_te)->name)) >=
1773 	    sizeof((*new_te)->name)) {
1774 		err = got_error(GOT_ERR_NO_SPACE);
1775 		goto done;
1776 	}
1777 
1778 	if (S_ISLNK(mode)) {
1779 		(*new_te)->mode = S_IFLNK;
1780 	} else {
1781 		(*new_te)->mode = S_IFREG;
1782 		(*new_te)->mode |= (mode & (S_IRWXU | S_IRWXG | S_IRWXO));
1783 	}
1784 	memcpy(&(*new_te)->id, blob_id, sizeof((*new_te)->id));
1785 done:
1786 	if (err && *new_te) {
1787 		free(*new_te);
1788 		*new_te = NULL;
1789 	}
1790 	return err;
1791 }
1792 
1793 static const struct got_error *
1794 import_file(struct got_tree_entry **new_te, struct dirent *de,
1795     const char *path, struct got_repository *repo)
1796 {
1797 	const struct got_error *err;
1798 	struct got_object_id *blob_id = NULL;
1799 	char *filepath;
1800 	struct stat sb;
1801 
1802 	if (asprintf(&filepath, "%s%s%s", path,
1803 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1804 		return got_error_from_errno("asprintf");
1805 
1806 	if (lstat(filepath, &sb) != 0) {
1807 		err = got_error_from_errno2("lstat", path);
1808 		goto done;
1809 	}
1810 
1811 	err = got_object_blob_create(&blob_id, filepath, repo);
1812 	if (err)
1813 		goto done;
1814 
1815 	err = alloc_added_blob_tree_entry(new_te, de->d_name, sb.st_mode,
1816 	    blob_id);
1817 done:
1818 	free(filepath);
1819 	if (err)
1820 		free(blob_id);
1821 	return err;
1822 }
1823 
1824 static const struct got_error *
1825 insert_tree_entry(struct got_tree_entry *new_te,
1826     struct got_pathlist_head *paths)
1827 {
1828 	const struct got_error *err = NULL;
1829 	struct got_pathlist_entry *new_pe;
1830 
1831 	err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
1832 	if (err)
1833 		return err;
1834 	if (new_pe == NULL)
1835 		return got_error(GOT_ERR_TREE_DUP_ENTRY);
1836 	return NULL;
1837 }
1838 
1839 static const struct got_error *write_tree(struct got_object_id **,
1840     const char *, struct got_pathlist_head *, struct got_repository *,
1841     got_repo_import_cb progress_cb, void *progress_arg);
1842 
1843 static const struct got_error *
1844 import_subdir(struct got_tree_entry **new_te, struct dirent *de,
1845     const char *path, struct got_pathlist_head *ignores,
1846     struct got_repository *repo,
1847     got_repo_import_cb progress_cb, void *progress_arg)
1848 {
1849 	const struct got_error *err;
1850 	struct got_object_id *id = NULL;
1851 	char *subdirpath;
1852 
1853 	if (asprintf(&subdirpath, "%s%s%s", path,
1854 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1855 		return got_error_from_errno("asprintf");
1856 
1857 	(*new_te) = calloc(1, sizeof(**new_te));
1858 	if (*new_te == NULL)
1859 		return got_error_from_errno("calloc");
1860 	(*new_te)->mode = S_IFDIR;
1861 	if (strlcpy((*new_te)->name, de->d_name, sizeof((*new_te)->name)) >=
1862 	    sizeof((*new_te)->name)) {
1863 		err = got_error(GOT_ERR_NO_SPACE);
1864 		goto done;
1865 	}
1866 	err = write_tree(&id, subdirpath, ignores,  repo,
1867 	    progress_cb, progress_arg);
1868 	if (err)
1869 		goto done;
1870 	memcpy(&(*new_te)->id, id, sizeof((*new_te)->id));
1871 	
1872 done:
1873 	free(id);
1874 	free(subdirpath);
1875 	if (err) {
1876 		free(*new_te);
1877 		*new_te = NULL;
1878 	}
1879 	return err;
1880 }
1881 
1882 static const struct got_error *
1883 write_tree(struct got_object_id **new_tree_id, const char *path_dir,
1884     struct got_pathlist_head *ignores, struct got_repository *repo,
1885     got_repo_import_cb progress_cb, void *progress_arg)
1886 {
1887 	const struct got_error *err = NULL;
1888 	DIR *dir;
1889 	struct dirent *de;
1890 	int nentries;
1891 	struct got_tree_entry *new_te = NULL;
1892 	struct got_pathlist_head paths;
1893 	struct got_pathlist_entry *pe;
1894 
1895 	*new_tree_id = NULL;
1896 
1897 	TAILQ_INIT(&paths);
1898 
1899 	dir = opendir(path_dir);
1900 	if (dir == NULL) {
1901 		err = got_error_from_errno2("opendir", path_dir);
1902 		goto done;
1903 	}
1904 
1905 	nentries = 0;
1906 	while ((de = readdir(dir)) != NULL) {
1907 		int ignore = 0;
1908 		int type;
1909 
1910 		if (strcmp(de->d_name, ".") == 0 ||
1911 		    strcmp(de->d_name, "..") == 0)
1912 			continue;
1913 
1914 		TAILQ_FOREACH(pe, ignores, entry) {
1915 			if (fnmatch(pe->path, de->d_name, 0) == 0) {
1916 				ignore = 1;
1917 				break;
1918 			}
1919 		}
1920 		if (ignore)
1921 			continue;
1922 
1923 		err = got_path_dirent_type(&type, path_dir, de);
1924 		if (err)
1925 			goto done;
1926 
1927 		if (type == DT_DIR) {
1928 			err = import_subdir(&new_te, de, path_dir,
1929 			    ignores, repo, progress_cb, progress_arg);
1930 			if (err) {
1931 				if (err->code != GOT_ERR_NO_TREE_ENTRY)
1932 					goto done;
1933 				err = NULL;
1934 				continue;
1935 			}
1936 		} else if (type == DT_REG || type == DT_LNK) {
1937 			err = import_file(&new_te, de, path_dir, repo);
1938 			if (err)
1939 				goto done;
1940 		} else
1941 			continue;
1942 
1943 		err = insert_tree_entry(new_te, &paths);
1944 		if (err)
1945 			goto done;
1946 		nentries++;
1947 	}
1948 
1949 	if (TAILQ_EMPTY(&paths)) {
1950 		err = got_error_msg(GOT_ERR_NO_TREE_ENTRY,
1951 		    "cannot create tree without any entries");
1952 		goto done;
1953 	}
1954 
1955 	TAILQ_FOREACH(pe, &paths, entry) {
1956 		struct got_tree_entry *te = pe->data;
1957 		char *path;
1958 		if (!S_ISREG(te->mode) && !S_ISLNK(te->mode))
1959 			continue;
1960 		if (asprintf(&path, "%s/%s", path_dir, pe->path) == -1) {
1961 			err = got_error_from_errno("asprintf");
1962 			goto done;
1963 		}
1964 		err = (*progress_cb)(progress_arg, path);
1965 		free(path);
1966 		if (err)
1967 			goto done;
1968 	}
1969 
1970 	err = got_object_tree_create(new_tree_id, &paths, nentries, repo);
1971 done:
1972 	if (dir)
1973 		closedir(dir);
1974 	got_pathlist_free(&paths);
1975 	return err;
1976 }
1977 
1978 const struct got_error *
1979 got_repo_import(struct got_object_id **new_commit_id, const char *path_dir,
1980     const char *logmsg, const char *author, struct got_pathlist_head *ignores,
1981     struct got_repository *repo, got_repo_import_cb progress_cb,
1982     void *progress_arg)
1983 {
1984 	const struct got_error *err;
1985 	struct got_object_id *new_tree_id;
1986 
1987 	err = write_tree(&new_tree_id, path_dir, ignores, repo,
1988 	    progress_cb, progress_arg);
1989 	if (err)
1990 		return err;
1991 
1992 	err = got_object_commit_create(new_commit_id, new_tree_id, NULL, 0,
1993 	    author, time(NULL), author, time(NULL), logmsg, repo);
1994 	free(new_tree_id);
1995 	return err;
1996 }
1997 
1998 const struct got_error *
1999 got_repo_get_loose_object_info(int *nobjects, off_t *ondisk_size,
2000     struct got_repository *repo)
2001 {
2002 	const struct got_error *err = NULL;
2003 	char *path_objects = NULL, *path = NULL;
2004 	DIR *dir = NULL;
2005 	struct got_object_id id;
2006 	int i;
2007 
2008 	*nobjects = 0;
2009 	*ondisk_size = 0;
2010 
2011 	path_objects = got_repo_get_path_objects(repo);
2012 	if (path_objects == NULL)
2013 		return got_error_from_errno("got_repo_get_path_objects");
2014 
2015 	for (i = 0; i <= 0xff; i++) {
2016 		struct dirent *dent;
2017 
2018 		if (asprintf(&path, "%s/%.2x", path_objects, i) == -1) {
2019 			err = got_error_from_errno("asprintf");
2020 			break;
2021 		}
2022 
2023 		dir = opendir(path);
2024 		if (dir == NULL) {
2025 			if (errno == ENOENT) {
2026 				err = NULL;
2027 				continue;
2028 			}
2029 			err = got_error_from_errno2("opendir", path);
2030 			break;
2031 		}
2032 
2033 		while ((dent = readdir(dir)) != NULL) {
2034 			char *id_str;
2035 			int fd;
2036 			struct stat sb;
2037 
2038 			if (strcmp(dent->d_name, ".") == 0 ||
2039 			    strcmp(dent->d_name, "..") == 0)
2040 				continue;
2041 
2042 			if (asprintf(&id_str, "%.2x%s", i, dent->d_name) == -1) {
2043 				err = got_error_from_errno("asprintf");
2044 				goto done;
2045 			}
2046 
2047 			if (!got_parse_sha1_digest(id.sha1, id_str)) {
2048 				free(id_str);
2049 				continue;
2050 			}
2051 			free(id_str);
2052 
2053 			err = got_object_open_loose_fd(&fd, &id, repo);
2054 			if (err)
2055 				goto done;
2056 
2057 			if (fstat(fd, &sb) == -1) {
2058 				err = got_error_from_errno("fstat");
2059 				close(fd);
2060 				goto done;
2061 			}
2062 			(*nobjects)++;
2063 			(*ondisk_size) += sb.st_size;
2064 
2065 			if (close(fd) == -1) {
2066 				err = got_error_from_errno("close");
2067 				goto done;
2068 			}
2069 		}
2070 
2071 		if (closedir(dir) != 0) {
2072 			err = got_error_from_errno("closedir");
2073 			goto done;
2074 		}
2075 		dir = NULL;
2076 
2077 		free(path);
2078 		path = NULL;
2079 	}
2080 done:
2081 	if (dir && closedir(dir) != 0 && err == NULL)
2082 		err = got_error_from_errno("closedir");
2083 
2084 	if (err) {
2085 		*nobjects = 0;
2086 		*ondisk_size = 0;
2087 	}
2088 	free(path_objects);
2089 	free(path);
2090 	return err;
2091 }
2092 
2093 const struct got_error *
2094 got_repo_get_packfile_info(int *npackfiles, int *nobjects,
2095     off_t *total_packsize, struct got_repository *repo)
2096 {
2097 	const struct got_error *err = NULL;
2098 	DIR *packdir = NULL;
2099 	struct dirent *dent;
2100 	struct got_packidx *packidx = NULL;
2101 	char *path_packidx;
2102 	char *path_packfile;
2103 	int packdir_fd;
2104 	struct stat sb;
2105 
2106 	*npackfiles = 0;
2107 	*nobjects = 0;
2108 	*total_packsize = 0;
2109 
2110 	packdir_fd = openat(got_repo_get_fd(repo),
2111 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
2112 	if (packdir_fd == -1) {
2113 		return got_error_from_errno_fmt("openat: %s/%s",
2114 		    got_repo_get_path_git_dir(repo),
2115 		    GOT_OBJECTS_PACK_DIR);
2116 	}
2117 
2118 	packdir = fdopendir(packdir_fd);
2119 	if (packdir == NULL) {
2120 		err = got_error_from_errno("fdopendir");
2121 		goto done;
2122 	}
2123 
2124 	while ((dent = readdir(packdir)) != NULL) {
2125 		if (!got_repo_is_packidx_filename(dent->d_name, dent->d_namlen))
2126 			continue;
2127 
2128 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
2129 		    dent->d_name) == -1) {
2130 			err = got_error_from_errno("asprintf");
2131 			goto done;
2132 		}
2133 
2134 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
2135 		    path_packidx, 0);
2136 		free(path_packidx);
2137 		if (err)
2138 			goto done;
2139 
2140 		if (fstat(packidx->fd, &sb) == -1)
2141 			goto done;
2142 		*total_packsize += sb.st_size;
2143 
2144 		err = got_packidx_get_packfile_path(&path_packfile,
2145 		    packidx->path_packidx);
2146 		if (err)
2147 			goto done;
2148 
2149 		if (fstatat(got_repo_get_fd(repo), path_packfile, &sb,
2150 		    0) == -1) {
2151 			free(path_packfile);
2152 			goto done;
2153 		}
2154 		free(path_packfile);
2155 		*total_packsize += sb.st_size;
2156 
2157 		*nobjects += be32toh(packidx->hdr.fanout_table[0xff]);
2158 
2159 		(*npackfiles)++;
2160 
2161 		got_packidx_close(packidx);
2162 		packidx = NULL;
2163 	}
2164 done:
2165 	if (packidx)
2166 		got_packidx_close(packidx);
2167 	if (packdir && closedir(packdir) != 0 && err == NULL)
2168 		err = got_error_from_errno("closedir");
2169 	if (err) {
2170 		*npackfiles = 0;
2171 		*nobjects = 0;
2172 		*total_packsize = 0;
2173 	}
2174 	return err;
2175 }
2176 
2177 RB_GENERATE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
2178     got_packidx_bloom_filter_cmp);