2 * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
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.
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.
17 #include <sys/types.h>
18 #include <sys/queue.h>
20 #include <sys/socket.h>
43 #include "got_error.h"
44 #include "got_reference.h"
45 #include "got_repository.h"
47 #include "got_cancel.h"
48 #include "got_worktree.h"
49 #include "got_object.h"
51 #include "got_lib_delta.h"
52 #include "got_lib_inflate.h"
53 #include "got_lib_object.h"
54 #include "got_lib_object_parse.h"
55 #include "got_lib_object_create.h"
56 #include "got_lib_pack.h"
57 #include "got_lib_privsep.h"
58 #include "got_lib_worktree.h"
59 #include "got_lib_sha1.h"
60 #include "got_lib_object_cache.h"
61 #include "got_lib_repository.h"
62 #include "got_lib_gotconfig.h"
65 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
69 got_repo_get_path(struct got_repository *repo)
75 got_repo_get_path_git_dir(struct got_repository *repo)
77 return repo->path_git_dir;
81 got_repo_get_fd(struct got_repository *repo)
83 return repo->gitdir_fd;
87 got_repo_get_gitconfig_author_name(struct got_repository *repo)
89 return repo->gitconfig_author_name;
93 got_repo_get_gitconfig_author_email(struct got_repository *repo)
95 return repo->gitconfig_author_email;
99 got_repo_get_global_gitconfig_author_name(struct got_repository *repo)
101 return repo->global_gitconfig_author_name;
105 got_repo_get_global_gitconfig_author_email(struct got_repository *repo)
107 return repo->global_gitconfig_author_email;
111 got_repo_get_gitconfig_owner(struct got_repository *repo)
113 return repo->gitconfig_owner;
117 got_repo_is_bare(struct got_repository *repo)
119 return (strcmp(repo->path, repo->path_git_dir) == 0);
123 get_path_git_child(struct got_repository *repo, const char *basename)
127 if (asprintf(&path_child, "%s/%s", repo->path_git_dir,
135 got_repo_get_path_objects(struct got_repository *repo)
137 return get_path_git_child(repo, GOT_OBJECTS_DIR);
141 got_repo_get_path_objects_pack(struct got_repository *repo)
143 return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR);
147 got_repo_get_path_refs(struct got_repository *repo)
149 return get_path_git_child(repo, GOT_REFS_DIR);
153 got_repo_get_path_packed_refs(struct got_repository *repo)
155 return get_path_git_child(repo, GOT_PACKED_REFS_FILE);
159 get_path_head(struct got_repository *repo)
161 return get_path_git_child(repo, GOT_HEAD_FILE);
165 got_repo_get_path_gitconfig(struct got_repository *repo)
167 return get_path_git_child(repo, GOT_GITCONFIG);
171 got_repo_get_path_gotconfig(struct got_repository *repo)
173 return get_path_git_child(repo, GOT_GOTCONFIG_FILENAME);
176 const struct got_gotconfig *
177 got_repo_get_gotconfig(struct got_repository *repo)
179 return repo->gotconfig;
183 got_repo_get_gitconfig_remotes(int *nremotes,
184 const struct got_remote_repo **remotes, struct got_repository *repo)
186 *nremotes = repo->ngitconfig_remotes;
187 *remotes = repo->gitconfig_remotes;
191 is_git_repo(struct got_repository *repo)
193 const char *path_git = got_repo_get_path_git_dir(repo);
194 char *path_objects = got_repo_get_path_objects(repo);
195 char *path_refs = got_repo_get_path_refs(repo);
196 char *path_head = get_path_head(repo);
199 struct got_reference *head_ref;
201 if (lstat(path_git, &sb) == -1)
203 if (!S_ISDIR(sb.st_mode))
206 if (lstat(path_objects, &sb) == -1)
208 if (!S_ISDIR(sb.st_mode))
211 if (lstat(path_refs, &sb) == -1)
213 if (!S_ISDIR(sb.st_mode))
216 if (lstat(path_head, &sb) == -1)
218 if (!S_ISREG(sb.st_mode))
221 /* Check if the HEAD reference can be opened. */
222 if (got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0) != NULL)
224 got_ref_close(head_ref);
235 const struct got_error *
236 got_repo_cache_object(struct got_repository *repo, struct got_object_id *id,
237 struct got_object *obj)
239 #ifndef GOT_NO_OBJ_CACHE
240 const struct got_error *err = NULL;
241 err = got_object_cache_add(&repo->objcache, id, obj);
243 if (err->code == GOT_ERR_OBJ_EXISTS ||
244 err->code == GOT_ERR_OBJ_TOO_LARGE)
254 got_repo_get_cached_object(struct got_repository *repo,
255 struct got_object_id *id)
257 return (struct got_object *)got_object_cache_get(&repo->objcache, id);
260 const struct got_error *
261 got_repo_cache_tree(struct got_repository *repo, struct got_object_id *id,
262 struct got_tree_object *tree)
264 #ifndef GOT_NO_OBJ_CACHE
265 const struct got_error *err = NULL;
266 err = got_object_cache_add(&repo->treecache, id, tree);
268 if (err->code == GOT_ERR_OBJ_EXISTS ||
269 err->code == GOT_ERR_OBJ_TOO_LARGE)
278 struct got_tree_object *
279 got_repo_get_cached_tree(struct got_repository *repo,
280 struct got_object_id *id)
282 return (struct got_tree_object *)got_object_cache_get(
283 &repo->treecache, id);
286 const struct got_error *
287 got_repo_cache_commit(struct got_repository *repo, struct got_object_id *id,
288 struct got_commit_object *commit)
290 #ifndef GOT_NO_OBJ_CACHE
291 const struct got_error *err = NULL;
292 err = got_object_cache_add(&repo->commitcache, id, commit);
294 if (err->code == GOT_ERR_OBJ_EXISTS ||
295 err->code == GOT_ERR_OBJ_TOO_LARGE)
304 struct got_commit_object *
305 got_repo_get_cached_commit(struct got_repository *repo,
306 struct got_object_id *id)
308 return (struct got_commit_object *)got_object_cache_get(
309 &repo->commitcache, id);
312 const struct got_error *
313 got_repo_cache_tag(struct got_repository *repo, struct got_object_id *id,
314 struct got_tag_object *tag)
316 #ifndef GOT_NO_OBJ_CACHE
317 const struct got_error *err = NULL;
318 err = got_object_cache_add(&repo->tagcache, id, tag);
320 if (err->code == GOT_ERR_OBJ_EXISTS ||
321 err->code == GOT_ERR_OBJ_TOO_LARGE)
330 struct got_tag_object *
331 got_repo_get_cached_tag(struct got_repository *repo, struct got_object_id *id)
333 return (struct got_tag_object *)got_object_cache_get(
334 &repo->tagcache, id);
337 const struct got_error *
338 open_repo(struct got_repository *repo, const char *path)
340 const struct got_error *err = NULL;
342 repo->gitdir_fd = -1;
344 /* bare git repository? */
345 repo->path_git_dir = strdup(path);
346 if (repo->path_git_dir == NULL)
347 return got_error_from_errno("strdup");
348 if (is_git_repo(repo)) {
349 repo->path = strdup(repo->path_git_dir);
350 if (repo->path == NULL) {
351 err = got_error_from_errno("strdup");
354 repo->gitdir_fd = open(repo->path_git_dir, O_DIRECTORY);
355 if (repo->gitdir_fd == -1) {
356 err = got_error_from_errno2("open",
363 /* git repository with working tree? */
364 free(repo->path_git_dir);
365 repo->path_git_dir = NULL;
366 if (asprintf(&repo->path_git_dir, "%s/%s", path, GOT_GIT_DIR) == -1) {
367 err = got_error_from_errno("asprintf");
370 if (is_git_repo(repo)) {
371 repo->path = strdup(path);
372 if (repo->path == NULL) {
373 err = got_error_from_errno("strdup");
376 repo->gitdir_fd = open(repo->path_git_dir, O_DIRECTORY);
377 if (repo->gitdir_fd == -1) {
378 err = got_error_from_errno2("open",
385 err = got_error(GOT_ERR_NOT_GIT_REPO);
390 free(repo->path_git_dir);
391 repo->path_git_dir = NULL;
392 if (repo->gitdir_fd != -1)
393 close(repo->gitdir_fd);
394 repo->gitdir_fd = -1;
400 static const struct got_error *
401 parse_gitconfig_file(int *gitconfig_repository_format_version,
402 char **gitconfig_author_name, char **gitconfig_author_email,
403 struct got_remote_repo **remotes, int *nremotes,
404 char **gitconfig_owner, char ***extensions, int *nextensions,
405 const char *gitconfig_path)
407 const struct got_error *err = NULL, *child_err = NULL;
409 int imsg_fds[2] = { -1, -1 };
411 struct imsgbuf *ibuf;
413 *gitconfig_repository_format_version = 0;
418 *gitconfig_author_name = NULL;
419 *gitconfig_author_email = NULL;
425 *gitconfig_owner = NULL;
427 fd = open(gitconfig_path, O_RDONLY);
431 return got_error_from_errno2("open", gitconfig_path);
434 ibuf = calloc(1, sizeof(*ibuf));
436 err = got_error_from_errno("calloc");
440 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
441 err = got_error_from_errno("socketpair");
447 err = got_error_from_errno("fork");
449 } else if (pid == 0) {
450 got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_GITCONFIG,
455 if (close(imsg_fds[1]) == -1) {
456 err = got_error_from_errno("close");
460 imsg_init(ibuf, imsg_fds[0]);
462 err = got_privsep_send_gitconfig_parse_req(ibuf, fd);
467 err = got_privsep_send_gitconfig_repository_format_version_req(ibuf);
471 err = got_privsep_recv_gitconfig_int(
472 gitconfig_repository_format_version, ibuf);
476 if (extensions && nextensions) {
477 err = got_privsep_send_gitconfig_repository_extensions_req(
481 err = got_privsep_recv_gitconfig_int(nextensions, ibuf);
484 if (*nextensions > 0) {
486 *extensions = calloc(*nextensions, sizeof(char *));
487 if (*extensions == NULL) {
488 err = got_error_from_errno("calloc");
491 for (i = 0; i < *nextensions; i++) {
493 err = got_privsep_recv_gitconfig_str(&ext,
497 (*extensions)[i] = ext;
502 err = got_privsep_send_gitconfig_author_name_req(ibuf);
506 err = got_privsep_recv_gitconfig_str(gitconfig_author_name, ibuf);
510 err = got_privsep_send_gitconfig_author_email_req(ibuf);
514 err = got_privsep_recv_gitconfig_str(gitconfig_author_email, ibuf);
518 if (remotes && nremotes) {
519 err = got_privsep_send_gitconfig_remotes_req(ibuf);
523 err = got_privsep_recv_gitconfig_remotes(remotes,
529 if (gitconfig_owner) {
530 err = got_privsep_send_gitconfig_owner_req(ibuf);
533 err = got_privsep_recv_gitconfig_str(gitconfig_owner, ibuf);
539 err = got_privsep_send_stop(imsg_fds[0]);
540 child_err = got_privsep_wait_for_child(pid);
541 if (child_err && err == NULL)
544 if (imsg_fds[0] != -1 && close(imsg_fds[0]) == -1 && err == NULL)
545 err = got_error_from_errno("close");
546 if (imsg_fds[1] != -1 && close(imsg_fds[1]) == -1 && err == NULL)
547 err = got_error_from_errno("close");
548 if (fd != -1 && close(fd) == -1 && err == NULL)
549 err = got_error_from_errno2("close", gitconfig_path);
554 static const struct got_error *
555 read_gitconfig(struct got_repository *repo, const char *global_gitconfig_path)
557 const struct got_error *err = NULL;
558 char *repo_gitconfig_path = NULL;
560 if (global_gitconfig_path) {
561 /* Read settings from ~/.gitconfig. */
562 int dummy_repo_version;
563 err = parse_gitconfig_file(&dummy_repo_version,
564 &repo->global_gitconfig_author_name,
565 &repo->global_gitconfig_author_email,
566 NULL, NULL, NULL, NULL, NULL, global_gitconfig_path);
571 /* Read repository's .git/config file. */
572 repo_gitconfig_path = got_repo_get_path_gitconfig(repo);
573 if (repo_gitconfig_path == NULL)
574 return got_error_from_errno("got_repo_get_path_gitconfig");
576 err = parse_gitconfig_file(&repo->gitconfig_repository_format_version,
577 &repo->gitconfig_author_name, &repo->gitconfig_author_email,
578 &repo->gitconfig_remotes, &repo->ngitconfig_remotes,
579 &repo->gitconfig_owner, &repo->extensions, &repo->nextensions,
580 repo_gitconfig_path);
584 free(repo_gitconfig_path);
588 static const struct got_error *
589 read_gotconfig(struct got_repository *repo)
591 const struct got_error *err = NULL;
592 char *gotconfig_path;
594 gotconfig_path = got_repo_get_path_gotconfig(repo);
595 if (gotconfig_path == NULL)
596 return got_error_from_errno("got_repo_get_path_gotconfig");
598 err = got_gotconfig_read(&repo->gotconfig, gotconfig_path);
599 free(gotconfig_path);
603 /* Supported repository format extensions. */
604 static const char *repo_extensions[] = {
605 "noop", /* Got supports repository format version 1. */
606 "preciousObjects", /* Got has no garbage collection yet. */
607 "worktreeConfig", /* Got does not care about Git work trees. */
610 const struct got_error *
611 got_repo_open(struct got_repository **repop, const char *path,
612 const char *global_gitconfig_path)
614 struct got_repository *repo = NULL;
615 const struct got_error *err = NULL;
616 char *repo_path = NULL;
621 repo = calloc(1, sizeof(*repo));
623 err = got_error_from_errno("calloc");
627 for (i = 0; i < nitems(repo->privsep_children); i++) {
628 memset(&repo->privsep_children[i], 0,
629 sizeof(repo->privsep_children[0]));
630 repo->privsep_children[i].imsg_fd = -1;
633 err = got_object_cache_init(&repo->objcache,
634 GOT_OBJECT_CACHE_TYPE_OBJ);
637 err = got_object_cache_init(&repo->treecache,
638 GOT_OBJECT_CACHE_TYPE_TREE);
641 err = got_object_cache_init(&repo->commitcache,
642 GOT_OBJECT_CACHE_TYPE_COMMIT);
645 err = got_object_cache_init(&repo->tagcache,
646 GOT_OBJECT_CACHE_TYPE_TAG);
650 repo_path = realpath(path, NULL);
651 if (repo_path == NULL) {
652 err = got_error_from_errno2("realpath", path);
659 err = open_repo(repo, repo_path);
662 if (err->code != GOT_ERR_NOT_GIT_REPO)
664 if (repo_path[0] == '/' && repo_path[1] == '\0') {
665 err = got_error(GOT_ERR_NOT_GIT_REPO);
668 err = got_path_dirname(&parent_path, repo_path);
672 repo_path = parent_path;
675 err = read_gotconfig(repo);
679 err = read_gitconfig(repo, global_gitconfig_path);
682 if (repo->gitconfig_repository_format_version != 0)
683 err = got_error_path(path, GOT_ERR_GIT_REPO_FORMAT);
684 for (i = 0; i < repo->nextensions; i++) {
685 char *ext = repo->extensions[i];
686 int j, supported = 0;
687 for (j = 0; j < nitems(repo_extensions); j++) {
688 if (strcmp(ext, repo_extensions[j]) == 0) {
694 err = got_error_path(ext, GOT_ERR_GIT_REPO_EXT);
700 got_repo_close(repo);
707 const struct got_error *
708 got_repo_close(struct got_repository *repo)
710 const struct got_error *err = NULL, *child_err;
713 for (i = 0; i < nitems(repo->packidx_cache); i++) {
714 if (repo->packidx_cache[i] == NULL)
716 got_packidx_close(repo->packidx_cache[i]);
719 for (i = 0; i < nitems(repo->packs); i++) {
720 if (repo->packs[i].path_packfile == NULL)
722 got_pack_close(&repo->packs[i]);
726 free(repo->path_git_dir);
728 got_object_cache_close(&repo->objcache);
729 got_object_cache_close(&repo->treecache);
730 got_object_cache_close(&repo->commitcache);
731 got_object_cache_close(&repo->tagcache);
733 for (i = 0; i < nitems(repo->privsep_children); i++) {
734 if (repo->privsep_children[i].imsg_fd == -1)
736 imsg_clear(repo->privsep_children[i].ibuf);
737 free(repo->privsep_children[i].ibuf);
738 err = got_privsep_send_stop(repo->privsep_children[i].imsg_fd);
739 child_err = got_privsep_wait_for_child(
740 repo->privsep_children[i].pid);
741 if (child_err && err == NULL)
743 if (close(repo->privsep_children[i].imsg_fd) != 0 &&
745 err = got_error_from_errno("close");
749 got_gotconfig_free(repo->gotconfig);
750 free(repo->gitconfig_author_name);
751 free(repo->gitconfig_author_email);
752 for (i = 0; i < repo->ngitconfig_remotes; i++)
753 got_repo_free_remote_repo_data(&repo->gitconfig_remotes[i]);
754 free(repo->gitconfig_remotes);
755 for (i = 0; i < repo->nextensions; i++)
756 free(repo->extensions[i]);
757 free(repo->extensions);
764 got_repo_free_remote_repo_data(struct got_remote_repo *repo)
772 for (i = 0; i < repo->nbranches; i++)
773 free(repo->branches[i]);
774 free(repo->branches);
775 repo->branches = NULL;
779 const struct got_error *
780 got_repo_map_path(char **in_repo_path, struct got_repository *repo,
781 const char *input_path)
783 const struct got_error *err = NULL;
784 const char *repo_abspath = NULL;
786 char *canonpath, *path = NULL;
788 *in_repo_path = NULL;
790 canonpath = strdup(input_path);
791 if (canonpath == NULL) {
792 err = got_error_from_errno("strdup");
795 err = got_canonpath(input_path, canonpath, strlen(canonpath) + 1);
799 repo_abspath = got_repo_get_path(repo);
801 if (canonpath[0] == '\0') {
802 path = strdup(canonpath);
804 err = got_error_from_errno("strdup");
808 path = realpath(canonpath, NULL);
810 if (errno != ENOENT) {
811 err = got_error_from_errno2("realpath",
816 * Path is not on disk.
817 * Assume it is already relative to repository root.
819 path = strdup(canonpath);
821 err = got_error_from_errno("strdup");
826 repolen = strlen(repo_abspath);
830 if (strcmp(path, repo_abspath) == 0) {
834 err = got_error_from_errno("strdup");
837 } else if (len > repolen &&
838 got_path_is_child(path, repo_abspath, repolen)) {
839 /* Matched an on-disk path inside repository. */
840 if (got_repo_is_bare(repo)) {
842 * Matched an on-disk path inside repository
843 * database. Treat input as repository-relative.
850 /* Strip common prefix with repository path. */
851 err = got_path_skip_common_ancestor(&child,
860 * Matched unrelated on-disk path.
861 * Treat input as repository-relative.
869 /* Make in-repository path absolute */
870 if (path[0] != '/') {
872 if (asprintf(&abspath, "/%s", path) == -1) {
873 err = got_error_from_errno("asprintf");
885 *in_repo_path = path;
889 static const struct got_error *
890 cache_packidx(struct got_repository *repo, struct got_packidx *packidx,
891 const char *path_packidx)
893 const struct got_error *err = NULL;
896 for (i = 0; i < nitems(repo->packidx_cache); i++) {
897 if (repo->packidx_cache[i] == NULL)
899 if (strcmp(repo->packidx_cache[i]->path_packidx,
900 path_packidx) == 0) {
901 return got_error(GOT_ERR_CACHE_DUP_ENTRY);
904 if (i == nitems(repo->packidx_cache)) {
905 err = got_packidx_close(repo->packidx_cache[i - 1]);
911 * Insert the new pack index at the front so it will
912 * be searched first in the future.
914 memmove(&repo->packidx_cache[1], &repo->packidx_cache[0],
915 sizeof(repo->packidx_cache) -
916 sizeof(repo->packidx_cache[0]));
917 repo->packidx_cache[0] = packidx;
923 is_packidx_filename(const char *name, size_t len)
925 if (len != GOT_PACKIDX_NAMELEN)
928 if (strncmp(name, GOT_PACK_PREFIX, strlen(GOT_PACK_PREFIX)) != 0)
931 if (strcmp(name + strlen(GOT_PACK_PREFIX) +
932 SHA1_DIGEST_STRING_LENGTH - 1, GOT_PACKIDX_SUFFIX) != 0)
938 const struct got_error *
939 got_repo_search_packidx(struct got_packidx **packidx, int *idx,
940 struct got_repository *repo, struct got_object_id *id)
942 const struct got_error *err;
949 /* Search pack index cache. */
950 for (i = 0; i < nitems(repo->packidx_cache); i++) {
951 if (repo->packidx_cache[i] == NULL)
953 *idx = got_packidx_get_object_idx(repo->packidx_cache[i], id);
955 *packidx = repo->packidx_cache[i];
957 * Move this cache entry to the front. Repeatedly
958 * searching a wrong pack index can be expensive.
961 struct got_packidx *p;
962 p = repo->packidx_cache[0];
963 repo->packidx_cache[0] = *packidx;
964 repo->packidx_cache[i] = p;
969 /* No luck. Search the filesystem. */
971 packdir_fd = openat(got_repo_get_fd(repo),
972 GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
973 if (packdir_fd == -1) {
975 err = got_error_no_obj(id);
977 err = got_error_from_errno_fmt("openat: %s/%s",
978 got_repo_get_path_git_dir(repo),
979 GOT_OBJECTS_PACK_DIR);
983 packdir = fdopendir(packdir_fd);
984 if (packdir == NULL) {
985 err = got_error_from_errno("fdopendir");
989 while ((dent = readdir(packdir)) != NULL) {
992 if (!is_packidx_filename(dent->d_name, dent->d_namlen))
995 if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
996 dent->d_name) == -1) {
997 err = got_error_from_errno("asprintf");
1001 for (i = 0; i < nitems(repo->packidx_cache); i++) {
1002 if (repo->packidx_cache[i] == NULL)
1004 if (strcmp(repo->packidx_cache[i]->path_packidx,
1005 path_packidx) == 0) {
1012 continue; /* already searched */
1015 err = got_packidx_open(packidx, got_repo_get_fd(repo),
1022 err = cache_packidx(repo, *packidx, path_packidx);
1027 *idx = got_packidx_get_object_idx(*packidx, id);
1029 err = NULL; /* found the object */
1034 err = got_error_no_obj(id);
1036 if (packdir && closedir(packdir) != 0 && err == NULL)
1037 err = got_error_from_errno("closedir");
1041 static const struct got_error *
1042 read_packfile_hdr(int fd, struct got_packidx *packidx)
1044 const struct got_error *err = NULL;
1045 uint32_t totobj = be32toh(packidx->hdr.fanout_table[0xff]);
1046 struct got_packfile_hdr hdr;
1049 n = read(fd, &hdr, sizeof(hdr));
1051 return got_error_from_errno("read");
1052 if (n != sizeof(hdr))
1053 return got_error(GOT_ERR_BAD_PACKFILE);
1055 if (be32toh(hdr.signature) != GOT_PACKFILE_SIGNATURE ||
1056 be32toh(hdr.version) != GOT_PACKFILE_VERSION ||
1057 be32toh(hdr.nobjects) != totobj)
1058 err = got_error(GOT_ERR_BAD_PACKFILE);
1063 static const struct got_error *
1064 open_packfile(int *fd, struct got_repository *repo,
1065 const char *relpath, struct got_packidx *packidx)
1067 const struct got_error *err = NULL;
1069 *fd = openat(got_repo_get_fd(repo), relpath, O_RDONLY | O_NOFOLLOW);
1071 return got_error_from_errno_fmt("openat: %s/%s",
1072 got_repo_get_path_git_dir(repo), relpath);
1075 err = read_packfile_hdr(*fd, packidx);
1085 const struct got_error *
1086 got_repo_cache_pack(struct got_pack **packp, struct got_repository *repo,
1087 const char *path_packfile, struct got_packidx *packidx)
1089 const struct got_error *err = NULL;
1090 struct got_pack *pack = NULL;
1097 for (i = 0; i < nitems(repo->packs); i++) {
1098 pack = &repo->packs[i];
1099 if (pack->path_packfile == NULL)
1101 if (strcmp(pack->path_packfile, path_packfile) == 0)
1102 return got_error(GOT_ERR_CACHE_DUP_ENTRY);
1105 if (i == nitems(repo->packs) - 1) {
1106 err = got_pack_close(&repo->packs[i - 1]);
1109 memmove(&repo->packs[1], &repo->packs[0],
1110 sizeof(repo->packs) - sizeof(repo->packs[0]));
1114 pack = &repo->packs[i];
1116 pack->path_packfile = strdup(path_packfile);
1117 if (pack->path_packfile == NULL) {
1118 err = got_error_from_errno("strdup");
1122 err = open_packfile(&pack->fd, repo, path_packfile, packidx);
1126 if (fstat(pack->fd, &sb) != 0) {
1127 err = got_error_from_errno("fstat");
1130 pack->filesize = sb.st_size;
1132 pack->privsep_child = NULL;
1134 #ifndef GOT_PACK_NO_MMAP
1135 pack->map = mmap(NULL, pack->filesize, PROT_READ, MAP_PRIVATE,
1137 if (pack->map == MAP_FAILED) {
1138 if (errno != ENOMEM) {
1139 err = got_error_from_errno("mmap");
1142 pack->map = NULL; /* fall back to read(2) */
1148 free(pack->path_packfile);
1149 memset(pack, 0, sizeof(*pack));
1157 got_repo_get_cached_pack(struct got_repository *repo, const char *path_packfile)
1159 struct got_pack *pack = NULL;
1162 for (i = 0; i < nitems(repo->packs); i++) {
1163 pack = &repo->packs[i];
1164 if (pack->path_packfile == NULL)
1166 if (strcmp(pack->path_packfile, path_packfile) == 0)
1173 const struct got_error *
1174 got_repo_init(const char *repo_path)
1176 const struct got_error *err = NULL;
1177 const char *dirnames[] = {
1179 GOT_OBJECTS_PACK_DIR,
1182 const char *description_str = "Unnamed repository; "
1183 "edit this file 'description' to name the repository.";
1184 const char *headref_str = "ref: refs/heads/main";
1185 const char *gitconfig_str = "[core]\n"
1186 "\trepositoryformatversion = 0\n"
1187 "\tfilemode = true\n"
1192 if (!got_path_dir_is_empty(repo_path))
1193 return got_error(GOT_ERR_DIR_NOT_EMPTY);
1195 for (i = 0; i < nitems(dirnames); i++) {
1196 if (asprintf(&path, "%s/%s", repo_path, dirnames[i]) == -1) {
1197 return got_error_from_errno("asprintf");
1199 err = got_path_mkdir(path);
1205 if (asprintf(&path, "%s/%s", repo_path, "description") == -1)
1206 return got_error_from_errno("asprintf");
1207 err = got_path_create_file(path, description_str);
1212 if (asprintf(&path, "%s/%s", repo_path, GOT_HEAD_FILE) == -1)
1213 return got_error_from_errno("asprintf");
1214 err = got_path_create_file(path, headref_str);
1219 if (asprintf(&path, "%s/%s", repo_path, "config") == -1)
1220 return got_error_from_errno("asprintf");
1221 err = got_path_create_file(path, gitconfig_str);
1229 static const struct got_error *
1230 match_packed_object(struct got_object_id **unique_id,
1231 struct got_repository *repo, const char *id_str_prefix, int obj_type)
1233 const struct got_error *err = NULL;
1234 DIR *packdir = NULL;
1235 struct dirent *dent;
1237 struct got_object_id_queue matched_ids;
1240 SIMPLEQ_INIT(&matched_ids);
1242 packdir_fd = openat(got_repo_get_fd(repo),
1243 GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
1244 if (packdir_fd == -1) {
1245 if (errno != ENOENT)
1246 err = got_error_from_errno2("openat", GOT_OBJECTS_PACK_DIR);
1250 packdir = fdopendir(packdir_fd);
1251 if (packdir == NULL) {
1252 err = got_error_from_errno("fdopendir");
1256 while ((dent = readdir(packdir)) != NULL) {
1257 struct got_packidx *packidx;
1258 struct got_object_qid *qid;
1260 if (!is_packidx_filename(dent->d_name, dent->d_namlen))
1263 if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1264 dent->d_name) == -1) {
1265 err = got_error_from_errno("strdup");
1269 err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1275 err = got_packidx_match_id_str_prefix(&matched_ids,
1276 packidx, id_str_prefix);
1278 got_packidx_close(packidx);
1281 err = got_packidx_close(packidx);
1285 SIMPLEQ_FOREACH(qid, &matched_ids, entry) {
1286 if (obj_type != GOT_OBJ_TYPE_ANY) {
1288 err = got_object_get_type(&matched_type, repo,
1292 if (matched_type != obj_type)
1295 if (*unique_id == NULL) {
1296 *unique_id = got_object_id_dup(qid->id);
1297 if (*unique_id == NULL) {
1298 err = got_error_from_errno("malloc");
1302 if (got_object_id_cmp(*unique_id, qid->id) == 0)
1303 continue; /* packed multiple times */
1304 err = got_error(GOT_ERR_AMBIGUOUS_ID);
1310 got_object_id_queue_free(&matched_ids);
1311 if (packdir && closedir(packdir) != 0 && err == NULL)
1312 err = got_error_from_errno("closedir");
1320 static const struct got_error *
1321 match_loose_object(struct got_object_id **unique_id, const char *path_objects,
1322 const char *object_dir, const char *id_str_prefix, int obj_type,
1323 struct got_repository *repo)
1325 const struct got_error *err = NULL;
1328 struct dirent *dent;
1329 struct got_object_id id;
1331 if (asprintf(&path, "%s/%s", path_objects, object_dir) == -1) {
1332 err = got_error_from_errno("asprintf");
1336 dir = opendir(path);
1338 if (errno == ENOENT) {
1342 err = got_error_from_errno2("opendir", path);
1345 while ((dent = readdir(dir)) != NULL) {
1349 if (strcmp(dent->d_name, ".") == 0 ||
1350 strcmp(dent->d_name, "..") == 0)
1353 if (asprintf(&id_str, "%s%s", object_dir, dent->d_name) == -1) {
1354 err = got_error_from_errno("asprintf");
1358 if (!got_parse_sha1_digest(id.sha1, id_str))
1362 * Directory entries do not necessarily appear in
1363 * sorted order, so we must iterate over all of them.
1365 cmp = strncmp(id_str, id_str_prefix, strlen(id_str_prefix));
1371 if (*unique_id == NULL) {
1372 if (obj_type != GOT_OBJ_TYPE_ANY) {
1374 err = got_object_get_type(&matched_type, repo,
1378 if (matched_type != obj_type)
1381 *unique_id = got_object_id_dup(&id);
1382 if (*unique_id == NULL) {
1383 err = got_error_from_errno("got_object_id_dup");
1388 if (got_object_id_cmp(*unique_id, &id) == 0)
1389 continue; /* both packed and loose */
1390 err = got_error(GOT_ERR_AMBIGUOUS_ID);
1396 if (dir && closedir(dir) != 0 && err == NULL)
1397 err = got_error_from_errno("closedir");
1406 const struct got_error *
1407 got_repo_match_object_id_prefix(struct got_object_id **id,
1408 const char *id_str_prefix, int obj_type, struct got_repository *repo)
1410 const struct got_error *err = NULL;
1411 char *path_objects = got_repo_get_path_objects(repo);
1412 char *object_dir = NULL;
1418 for (i = 0; i < strlen(id_str_prefix); i++) {
1419 if (isxdigit((unsigned char)id_str_prefix[i]))
1421 return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1424 len = strlen(id_str_prefix);
1426 err = match_packed_object(id, repo, id_str_prefix, obj_type);
1429 object_dir = strndup(id_str_prefix, 2);
1430 if (object_dir == NULL) {
1431 err = got_error_from_errno("strdup");
1434 err = match_loose_object(id, path_objects, object_dir,
1435 id_str_prefix, obj_type, repo);
1436 } else if (len == 1) {
1438 for (i = 0; i < 0xf; i++) {
1439 if (asprintf(&object_dir, "%s%.1x", id_str_prefix, i)
1441 err = got_error_from_errno("asprintf");
1444 err = match_packed_object(id, repo, object_dir,
1448 err = match_loose_object(id, path_objects, object_dir,
1449 id_str_prefix, obj_type, repo);
1454 err = got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1462 } else if (*id == NULL)
1463 err = got_error_path(id_str_prefix, GOT_ERR_NO_OBJ);
1468 const struct got_error *
1469 got_repo_match_object_id(struct got_object_id **id, char **label,
1470 const char *id_str, int obj_type, int resolve_tags,
1471 struct got_repository *repo)
1473 const struct got_error *err;
1474 struct got_tag_object *tag;
1475 struct got_reference *ref = NULL;
1482 err = got_repo_object_match_tag(&tag, id_str, GOT_OBJ_TYPE_ANY,
1485 *id = got_object_id_dup(
1486 got_object_tag_get_object_id(tag));
1488 err = got_error_from_errno("got_object_id_dup");
1489 else if (label && asprintf(label, "refs/tags/%s",
1490 got_object_tag_get_name(tag)) == -1) {
1491 err = got_error_from_errno("asprintf");
1495 got_object_tag_close(tag);
1497 } else if (err->code != GOT_ERR_OBJ_TYPE &&
1498 err->code != GOT_ERR_NO_OBJ)
1502 err = got_repo_match_object_id_prefix(id, id_str, obj_type, repo);
1504 if (err->code != GOT_ERR_BAD_OBJ_ID_STR)
1506 err = got_ref_open(&ref, repo, id_str, 0);
1510 *label = strdup(got_ref_get_name(ref));
1511 if (*label == NULL) {
1512 err = got_error_from_errno("strdup");
1516 err = got_ref_resolve(id, repo, ref);
1518 err = got_object_id_str(label, *id);
1519 if (*label == NULL) {
1520 err = got_error_from_errno("strdup");
1530 const struct got_error *
1531 got_repo_object_match_tag(struct got_tag_object **tag, const char *name,
1532 int obj_type, struct got_repository *repo)
1534 const struct got_error *err;
1535 struct got_reflist_head refs;
1536 struct got_reflist_entry *re;
1537 struct got_object_id *tag_id;
1538 int name_is_absolute = (strncmp(name, "refs/", 5) == 0);
1540 SIMPLEQ_INIT(&refs);
1543 err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_by_name, NULL);
1547 SIMPLEQ_FOREACH(re, &refs, entry) {
1548 const char *refname;
1549 refname = got_ref_get_name(re->ref);
1550 if (got_ref_is_symbolic(re->ref))
1552 if (!name_is_absolute)
1553 refname += strlen("refs/tags/");
1554 if (strcmp(refname, name) != 0)
1556 err = got_ref_resolve(&tag_id, repo, re->ref);
1559 err = got_object_open_as_tag(tag, repo, tag_id);
1563 if (obj_type == GOT_OBJ_TYPE_ANY ||
1564 got_object_tag_get_object_type(*tag) == obj_type)
1566 got_object_tag_close(*tag);
1570 got_ref_list_free(&refs);
1571 if (err == NULL && *tag == NULL)
1572 err = got_error_path(name, GOT_ERR_NO_OBJ);
1576 static const struct got_error *
1577 alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
1578 const char *name, mode_t mode, struct got_object_id *blob_id)
1580 const struct got_error *err = NULL;
1584 *new_te = calloc(1, sizeof(**new_te));
1585 if (*new_te == NULL)
1586 return got_error_from_errno("calloc");
1588 if (strlcpy((*new_te)->name, name, sizeof((*new_te)->name)) >=
1589 sizeof((*new_te)->name)) {
1590 err = got_error(GOT_ERR_NO_SPACE);
1594 if (S_ISLNK(mode)) {
1595 (*new_te)->mode = S_IFLNK;
1597 (*new_te)->mode = S_IFREG;
1598 (*new_te)->mode |= (mode & (S_IRWXU | S_IRWXG | S_IRWXO));
1600 memcpy(&(*new_te)->id, blob_id, sizeof((*new_te)->id));
1602 if (err && *new_te) {
1609 static const struct got_error *
1610 import_file(struct got_tree_entry **new_te, struct dirent *de,
1611 const char *path, struct got_repository *repo)
1613 const struct got_error *err;
1614 struct got_object_id *blob_id = NULL;
1618 if (asprintf(&filepath, "%s%s%s", path,
1619 path[0] == '\0' ? "" : "/", de->d_name) == -1)
1620 return got_error_from_errno("asprintf");
1622 if (lstat(filepath, &sb) != 0) {
1623 err = got_error_from_errno2("lstat", path);
1627 err = got_object_blob_create(&blob_id, filepath, repo);
1631 err = alloc_added_blob_tree_entry(new_te, de->d_name, sb.st_mode,
1640 static const struct got_error *
1641 insert_tree_entry(struct got_tree_entry *new_te,
1642 struct got_pathlist_head *paths)
1644 const struct got_error *err = NULL;
1645 struct got_pathlist_entry *new_pe;
1647 err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
1651 return got_error(GOT_ERR_TREE_DUP_ENTRY);
1655 static const struct got_error *write_tree(struct got_object_id **,
1656 const char *, struct got_pathlist_head *, struct got_repository *,
1657 got_repo_import_cb progress_cb, void *progress_arg);
1659 static const struct got_error *
1660 import_subdir(struct got_tree_entry **new_te, struct dirent *de,
1661 const char *path, struct got_pathlist_head *ignores,
1662 struct got_repository *repo,
1663 got_repo_import_cb progress_cb, void *progress_arg)
1665 const struct got_error *err;
1666 struct got_object_id *id = NULL;
1669 if (asprintf(&subdirpath, "%s%s%s", path,
1670 path[0] == '\0' ? "" : "/", de->d_name) == -1)
1671 return got_error_from_errno("asprintf");
1673 (*new_te) = calloc(1, sizeof(**new_te));
1674 if (*new_te == NULL)
1675 return got_error_from_errno("calloc");
1676 (*new_te)->mode = S_IFDIR;
1677 if (strlcpy((*new_te)->name, de->d_name, sizeof((*new_te)->name)) >=
1678 sizeof((*new_te)->name)) {
1679 err = got_error(GOT_ERR_NO_SPACE);
1682 err = write_tree(&id, subdirpath, ignores, repo,
1683 progress_cb, progress_arg);
1686 memcpy(&(*new_te)->id, id, sizeof((*new_te)->id));
1698 static const struct got_error *
1699 write_tree(struct got_object_id **new_tree_id, const char *path_dir,
1700 struct got_pathlist_head *ignores, struct got_repository *repo,
1701 got_repo_import_cb progress_cb, void *progress_arg)
1703 const struct got_error *err = NULL;
1707 struct got_tree_entry *new_te = NULL;
1708 struct got_pathlist_head paths;
1709 struct got_pathlist_entry *pe;
1711 *new_tree_id = NULL;
1715 dir = opendir(path_dir);
1717 err = got_error_from_errno2("opendir", path_dir);
1722 while ((de = readdir(dir)) != NULL) {
1726 if (strcmp(de->d_name, ".") == 0 ||
1727 strcmp(de->d_name, "..") == 0)
1730 TAILQ_FOREACH(pe, ignores, entry) {
1731 if (fnmatch(pe->path, de->d_name, 0) == 0) {
1739 err = got_path_dirent_type(&type, path_dir, de);
1743 if (type == DT_DIR) {
1744 err = import_subdir(&new_te, de, path_dir,
1745 ignores, repo, progress_cb, progress_arg);
1747 if (err->code != GOT_ERR_NO_TREE_ENTRY)
1752 } else if (type == DT_REG || type == DT_LNK) {
1753 err = import_file(&new_te, de, path_dir, repo);
1759 err = insert_tree_entry(new_te, &paths);
1765 if (TAILQ_EMPTY(&paths)) {
1766 err = got_error_msg(GOT_ERR_NO_TREE_ENTRY,
1767 "cannot create tree without any entries");
1771 TAILQ_FOREACH(pe, &paths, entry) {
1772 struct got_tree_entry *te = pe->data;
1774 if (!S_ISREG(te->mode) && !S_ISLNK(te->mode))
1776 if (asprintf(&path, "%s/%s", path_dir, pe->path) == -1) {
1777 err = got_error_from_errno("asprintf");
1780 err = (*progress_cb)(progress_arg, path);
1786 err = got_object_tree_create(new_tree_id, &paths, nentries, repo);
1790 got_pathlist_free(&paths);
1794 const struct got_error *
1795 got_repo_import(struct got_object_id **new_commit_id, const char *path_dir,
1796 const char *logmsg, const char *author, struct got_pathlist_head *ignores,
1797 struct got_repository *repo, got_repo_import_cb progress_cb,
1800 const struct got_error *err;
1801 struct got_object_id *new_tree_id;
1803 err = write_tree(&new_tree_id, path_dir, ignores, repo,
1804 progress_cb, progress_arg);
1808 err = got_object_commit_create(new_commit_id, new_tree_id, NULL, 0,
1809 author, time(NULL), author, time(NULL), logmsg, repo);