2 * Copyright (c) 2018 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/queue.h>
27 #include "got_error.h"
28 #include "got_reference.h"
29 #include "got_repository.h"
30 #include "got_worktree.h"
31 #include "got_object.h"
33 #include "got_lib_path.h"
34 #include "got_lib_delta.h"
35 #include "got_lib_zbuf.h"
36 #include "got_lib_object.h"
37 #include "got_lib_pack.h"
38 #include "got_lib_repository.h"
39 #include "got_lib_worktree.h"
40 #include "got_lib_object_idset.h"
43 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
46 #define GOT_GIT_DIR ".git"
48 /* Mandatory files and directories inside the git directory. */
49 #define GOT_OBJECTS_DIR "objects"
50 #define GOT_REFS_DIR "refs"
51 #define GOT_HEAD_FILE "HEAD"
53 /* Other files and directories inside the git directory. */
54 #define GOT_FETCH_HEAD_FILE "FETCH_HEAD"
55 #define GOT_ORIG_HEAD_FILE "ORIG_HEAD"
56 #define GOT_OBJECTS_PACK_DIR "objects/pack"
59 got_repo_get_path(struct got_repository *repo)
61 return strdup(repo->path);
65 got_repo_get_path_git_dir(struct got_repository *repo)
67 return strdup(repo->path_git_dir);
71 get_path_git_child(struct got_repository *repo, const char *basename)
75 if (asprintf(&path_child, "%s/%s", repo->path_git_dir,
83 got_repo_get_path_objects(struct got_repository *repo)
85 return get_path_git_child(repo, GOT_OBJECTS_DIR);
89 got_repo_get_path_objects_pack(struct got_repository *repo)
91 return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR);
95 got_repo_get_path_refs(struct got_repository *repo)
97 return get_path_git_child(repo, GOT_REFS_DIR);
101 get_path_head(struct got_repository *repo)
103 return get_path_git_child(repo, GOT_HEAD_FILE);
107 is_git_repo(struct got_repository *repo)
109 char *path_git = got_repo_get_path_git_dir(repo);
110 char *path_objects = got_repo_get_path_objects(repo);
111 char *path_refs = got_repo_get_path_refs(repo);
112 char *path_head = get_path_head(repo);
115 struct got_reference *head_ref;
117 if (lstat(path_git, &sb) == -1)
119 if (!S_ISDIR(sb.st_mode))
122 if (lstat(path_objects, &sb) == -1)
124 if (!S_ISDIR(sb.st_mode))
127 if (lstat(path_refs, &sb) == -1)
129 if (!S_ISDIR(sb.st_mode))
132 if (lstat(path_head, &sb) == -1)
134 if (!S_ISREG(sb.st_mode))
137 /* Check if the HEAD reference can be opened. */
138 if (got_ref_open(&head_ref, repo, GOT_REF_HEAD) != NULL)
140 got_ref_close(head_ref);
152 const struct got_error *
153 got_repo_cache_object(struct got_repository *repo, struct got_object_id *id,
154 struct got_object *obj)
156 const struct got_error *err = NULL;
157 struct got_object_cache_entry *ce;
159 if (repo->objcache.ncached >= GOT_OBJECT_CACHE_SIZE) {
160 err = got_object_idset_remove_random((void **)&ce,
164 got_object_close(ce->obj);
166 repo->objcache.ncached--;
169 ce = calloc(1, sizeof(*ce));
171 return got_error_from_errno();
172 memcpy(&ce->id, id, sizeof(ce->id));
174 err = got_object_idset_add(NULL, repo->objcache.set, id, ce);
176 if (err->code == GOT_ERR_OBJ_EXISTS) {
182 repo->objcache.ncached++;
189 got_repo_get_cached_object(struct got_repository *repo,
190 struct got_object_id *id)
192 struct got_object_cache_entry *ce;
194 ce = got_object_idset_get(repo->objcache.set, id);
196 repo->objcache.cache_hit++;
199 repo->objcache.cache_miss++;
203 const struct got_error *
204 got_repo_open(struct got_repository **ret, const char *path)
206 struct got_repository *repo = NULL;
207 const struct got_error *err = NULL;
210 if (got_path_is_absolute(path))
211 abspath = strdup(path);
213 abspath = got_path_get_absolute(path);
215 return got_error(GOT_ERR_BAD_PATH);
217 repo = calloc(1, sizeof(*repo));
219 err = got_error_from_errno();
223 repo->objcache.set = got_object_idset_alloc();
224 if (repo->objcache.set == NULL) {
225 err = got_error_from_errno();
229 repo->path = got_path_normalize(abspath);
230 if (repo->path == NULL) {
231 err = got_error(GOT_ERR_BAD_PATH);
235 repo->path_git_dir = strdup(repo->path);
236 if (repo->path_git_dir == NULL) {
237 err = got_error_from_errno();
240 if (!is_git_repo(repo)) {
241 free(repo->path_git_dir);
242 if (asprintf(&repo->path_git_dir, "%s/%s", repo->path,
243 GOT_GIT_DIR) == -1) {
244 err = got_error_from_errno();
247 if (!is_git_repo(repo)) {
248 struct got_worktree *worktree;
249 if (got_worktree_open(&worktree, repo->path) == NULL) {
250 free(repo->path_git_dir);
252 strdup(worktree->repo_path);
253 if (repo->path_git_dir == NULL) {
254 err = got_error_from_errno();
257 if (!is_git_repo(repo)) {
258 free(repo->path_git_dir);
259 if (asprintf(&repo->path_git_dir,
260 "%s/%s", worktree->repo_path,
261 GOT_GIT_DIR) == -1) {
262 err = got_error_from_errno();
266 got_worktree_close(worktree);
269 if (!is_git_repo(repo)) {
270 err = got_error(GOT_ERR_NOT_GIT_REPO);
278 got_repo_close(repo);
284 got_repo_close(struct got_repository *repo)
288 for (i = 0; i < nitems(repo->packidx_cache); i++) {
289 if (repo->packidx_cache[i] == NULL)
291 got_packidx_close(repo->packidx_cache[i]);
294 for (i = 0; i < nitems(repo->packs); i++) {
295 if (repo->packs[i].path_packfile == NULL)
297 got_pack_close(&repo->packs[i]);
301 free(repo->path_git_dir);
302 if (repo->objcache.set)
303 got_object_idset_free(repo->objcache.set);