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Commit | Line | Data |
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f8adbec9 NTND |
1 | /* |
2 | * not really _using_ the compat macros, just make sure the_index | |
3 | * declaration matches the definition in this file. | |
4 | */ | |
5 | #define USE_THE_INDEX_COMPATIBILITY_MACROS | |
359efeff BW |
6 | #include "cache.h" |
7 | #include "repository.h" | |
90c62155 | 8 | #include "object-store.h" |
3b256228 | 9 | #include "config.h" |
99bf115c | 10 | #include "object.h" |
3a95f31d | 11 | #include "lockfile.h" |
fd3cb050 | 12 | #include "remote.h" |
bf12fcdf | 13 | #include "submodule-config.h" |
3964fc2a | 14 | #include "sparse-index.h" |
ef7dc2e9 | 15 | #include "promisor-remote.h" |
359efeff BW |
16 | |
17 | /* The main repository */ | |
b2f0ecee NTND |
18 | static struct repository the_repo; |
19 | struct repository *the_repository; | |
f8adbec9 | 20 | struct index_state the_index; |
b2f0ecee NTND |
21 | |
22 | void initialize_the_repository(void) | |
23 | { | |
24 | the_repository = &the_repo; | |
25 | ||
26 | the_repo.index = &the_index; | |
90c62155 | 27 | the_repo.objects = raw_object_store_new(); |
fd3cb050 | 28 | the_repo.remote_state = remote_state_new(); |
99bf115c SB |
29 | the_repo.parsed_objects = parsed_object_pool_new(); |
30 | ||
b2f0ecee NTND |
31 | repo_set_hash_algo(&the_repo, GIT_HASH_SHA1); |
32 | } | |
359efeff | 33 | |
357a03eb NTND |
34 | static void expand_base_dir(char **out, const char *in, |
35 | const char *base_dir, const char *def_in) | |
36 | { | |
37 | free(*out); | |
38 | if (in) | |
39 | *out = xstrdup(in); | |
40 | else | |
41 | *out = xstrfmt("%s/%s", base_dir, def_in); | |
42 | } | |
43 | ||
44 | static void repo_set_commondir(struct repository *repo, | |
45 | const char *commondir) | |
359efeff BW |
46 | { |
47 | struct strbuf sb = STRBUF_INIT; | |
48 | ||
f9b7573f | 49 | free(repo->commondir); |
357a03eb NTND |
50 | |
51 | if (commondir) { | |
52 | repo->different_commondir = 1; | |
53 | repo->commondir = xstrdup(commondir); | |
54 | return; | |
55 | } | |
56 | ||
57 | repo->different_commondir = get_common_dir_noenv(&sb, repo->gitdir); | |
359efeff | 58 | repo->commondir = strbuf_detach(&sb, NULL); |
359efeff BW |
59 | } |
60 | ||
357a03eb NTND |
61 | void repo_set_gitdir(struct repository *repo, |
62 | const char *root, | |
63 | const struct set_gitdir_args *o) | |
359efeff | 64 | { |
357a03eb NTND |
65 | const char *gitfile = read_gitfile(root); |
66 | /* | |
67 | * repo->gitdir is saved because the caller could pass "root" | |
68 | * that also points to repo->gitdir. We want to keep it alive | |
69 | * until after xstrdup(root). Then we can free it. | |
70 | */ | |
1fb2b636 | 71 | char *old_gitdir = repo->gitdir; |
359efeff | 72 | |
357a03eb | 73 | repo->gitdir = xstrdup(gitfile ? gitfile : root); |
1fb2b636 | 74 | free(old_gitdir); |
357a03eb NTND |
75 | |
76 | repo_set_commondir(repo, o->commondir); | |
f0eaf638 JK |
77 | |
78 | if (!repo->objects->odb) { | |
ca56dadb | 79 | CALLOC_ARRAY(repo->objects->odb, 1); |
f0eaf638 JK |
80 | repo->objects->odb_tail = &repo->objects->odb->next; |
81 | } | |
82 | expand_base_dir(&repo->objects->odb->path, o->object_dir, | |
357a03eb | 83 | repo->commondir, "objects"); |
f0eaf638 | 84 | |
ecd81dfc NS |
85 | repo->objects->odb->disable_ref_updates = o->disable_ref_updates; |
86 | ||
90c62155 SB |
87 | free(repo->objects->alternate_db); |
88 | repo->objects->alternate_db = xstrdup_or_null(o->alternate_db); | |
357a03eb NTND |
89 | expand_base_dir(&repo->graft_file, o->graft_file, |
90 | repo->commondir, "info/grafts"); | |
91 | expand_base_dir(&repo->index_file, o->index_file, | |
92 | repo->gitdir, "index"); | |
359efeff BW |
93 | } |
94 | ||
78a67668 | 95 | void repo_set_hash_algo(struct repository *repo, int hash_algo) |
96 | { | |
97 | repo->hash_algo = &hash_algos[hash_algo]; | |
98 | } | |
99 | ||
359efeff BW |
100 | /* |
101 | * Attempt to resolve and set the provided 'gitdir' for repository 'repo'. | |
102 | * Return 0 upon success and a non-zero value upon failure. | |
103 | */ | |
104 | static int repo_init_gitdir(struct repository *repo, const char *gitdir) | |
105 | { | |
106 | int ret = 0; | |
107 | int error = 0; | |
108 | char *abspath = NULL; | |
109 | const char *resolved_gitdir; | |
357a03eb | 110 | struct set_gitdir_args args = { NULL }; |
359efeff BW |
111 | |
112 | abspath = real_pathdup(gitdir, 0); | |
113 | if (!abspath) { | |
114 | ret = -1; | |
115 | goto out; | |
116 | } | |
117 | ||
118 | /* 'gitdir' must reference the gitdir directly */ | |
119 | resolved_gitdir = resolve_gitdir_gently(abspath, &error); | |
120 | if (!resolved_gitdir) { | |
121 | ret = -1; | |
122 | goto out; | |
123 | } | |
124 | ||
357a03eb | 125 | repo_set_gitdir(repo, resolved_gitdir, &args); |
359efeff BW |
126 | |
127 | out: | |
128 | free(abspath); | |
129 | return ret; | |
130 | } | |
131 | ||
132 | void repo_set_worktree(struct repository *repo, const char *path) | |
133 | { | |
134 | repo->worktree = real_pathdup(path, 1); | |
ee4512ed JH |
135 | |
136 | trace2_def_repo(repo); | |
359efeff BW |
137 | } |
138 | ||
139 | static int read_and_verify_repository_format(struct repository_format *format, | |
140 | const char *commondir) | |
141 | { | |
142 | int ret = 0; | |
143 | struct strbuf sb = STRBUF_INIT; | |
144 | ||
145 | strbuf_addf(&sb, "%s/config", commondir); | |
146 | read_repository_format(format, sb.buf); | |
147 | strbuf_reset(&sb); | |
148 | ||
149 | if (verify_repository_format(format, &sb) < 0) { | |
150 | warning("%s", sb.buf); | |
151 | ret = -1; | |
152 | } | |
153 | ||
154 | strbuf_release(&sb); | |
155 | return ret; | |
156 | } | |
157 | ||
158 | /* | |
159 | * Initialize 'repo' based on the provided 'gitdir'. | |
160 | * Return 0 upon success and a non-zero value upon failure. | |
161 | */ | |
da62f786 SB |
162 | int repo_init(struct repository *repo, |
163 | const char *gitdir, | |
164 | const char *worktree) | |
359efeff | 165 | { |
e8805af1 | 166 | struct repository_format format = REPOSITORY_FORMAT_INIT; |
359efeff BW |
167 | memset(repo, 0, sizeof(*repo)); |
168 | ||
90c62155 | 169 | repo->objects = raw_object_store_new(); |
99bf115c | 170 | repo->parsed_objects = parsed_object_pool_new(); |
fd3cb050 | 171 | repo->remote_state = remote_state_new(); |
90c62155 | 172 | |
359efeff BW |
173 | if (repo_init_gitdir(repo, gitdir)) |
174 | goto error; | |
175 | ||
176 | if (read_and_verify_repository_format(&format, repo->commondir)) | |
177 | goto error; | |
178 | ||
78a67668 | 179 | repo_set_hash_algo(repo, format.hash_algo); |
180 | ||
ebaf3bcf JT |
181 | /* take ownership of format.partial_clone */ |
182 | repo->repository_format_partial_clone = format.partial_clone; | |
183 | format.partial_clone = NULL; | |
184 | ||
359efeff BW |
185 | if (worktree) |
186 | repo_set_worktree(repo, worktree); | |
187 | ||
e8805af1 | 188 | clear_repository_format(&format); |
359efeff BW |
189 | return 0; |
190 | ||
191 | error: | |
192 | repo_clear(repo); | |
193 | return -1; | |
194 | } | |
195 | ||
d5498e08 | 196 | int repo_submodule_init(struct repository *subrepo, |
96dc883b | 197 | struct repository *superproject, |
8eb8dcf9 JT |
198 | const char *path, |
199 | const struct object_id *treeish_name) | |
96dc883b | 200 | { |
96dc883b BW |
201 | struct strbuf gitdir = STRBUF_INIT; |
202 | struct strbuf worktree = STRBUF_INIT; | |
203 | int ret = 0; | |
204 | ||
8eb8dcf9 JT |
205 | strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", path); |
206 | strbuf_repo_worktree_path(&worktree, superproject, "%s", path); | |
96dc883b | 207 | |
d5498e08 | 208 | if (repo_init(subrepo, gitdir.buf, worktree.buf)) { |
96dc883b | 209 | /* |
15beaaa3 | 210 | * If initialization fails then it may be due to the submodule |
96dc883b | 211 | * not being populated in the superproject's worktree. Instead |
15beaaa3 | 212 | * we can try to initialize the submodule by finding it's gitdir |
96dc883b BW |
213 | * in the superproject's 'modules' directory. In this case the |
214 | * submodule would not have a worktree. | |
215 | */ | |
8eb8dcf9 JT |
216 | const struct submodule *sub = |
217 | submodule_from_path(superproject, treeish_name, path); | |
218 | if (!sub) { | |
219 | ret = -1; | |
220 | goto out; | |
221 | } | |
222 | ||
96dc883b | 223 | strbuf_reset(&gitdir); |
ce125d43 | 224 | submodule_name_to_gitdir(&gitdir, superproject, sub->name); |
96dc883b | 225 | |
d5498e08 | 226 | if (repo_init(subrepo, gitdir.buf, NULL)) { |
96dc883b BW |
227 | ret = -1; |
228 | goto out; | |
229 | } | |
230 | } | |
231 | ||
d5498e08 SB |
232 | subrepo->submodule_prefix = xstrfmt("%s%s/", |
233 | superproject->submodule_prefix ? | |
234 | superproject->submodule_prefix : | |
8eb8dcf9 | 235 | "", path); |
96dc883b BW |
236 | |
237 | out: | |
238 | strbuf_release(&gitdir); | |
239 | strbuf_release(&worktree); | |
240 | return ret; | |
241 | } | |
242 | ||
359efeff BW |
243 | void repo_clear(struct repository *repo) |
244 | { | |
90dd04aa RS |
245 | FREE_AND_NULL(repo->gitdir); |
246 | FREE_AND_NULL(repo->commondir); | |
90dd04aa RS |
247 | FREE_AND_NULL(repo->graft_file); |
248 | FREE_AND_NULL(repo->index_file); | |
249 | FREE_AND_NULL(repo->worktree); | |
250 | FREE_AND_NULL(repo->submodule_prefix); | |
3b256228 | 251 | |
90c62155 SB |
252 | raw_object_store_clear(repo->objects); |
253 | FREE_AND_NULL(repo->objects); | |
254 | ||
99bf115c SB |
255 | parsed_object_pool_clear(repo->parsed_objects); |
256 | FREE_AND_NULL(repo->parsed_objects); | |
257 | ||
3b256228 BW |
258 | if (repo->config) { |
259 | git_configset_clear(repo->config); | |
90dd04aa | 260 | FREE_AND_NULL(repo->config); |
3b256228 | 261 | } |
639e30b5 | 262 | |
bf12fcdf BW |
263 | if (repo->submodule_cache) { |
264 | submodule_cache_free(repo->submodule_cache); | |
265 | repo->submodule_cache = NULL; | |
266 | } | |
267 | ||
639e30b5 BW |
268 | if (repo->index) { |
269 | discard_index(repo->index); | |
74373b5f NTND |
270 | if (repo->index != &the_index) |
271 | FREE_AND_NULL(repo->index); | |
639e30b5 | 272 | } |
ef7dc2e9 JT |
273 | |
274 | if (repo->promisor_remote_config) { | |
275 | promisor_remote_clear(repo->promisor_remote_config); | |
276 | FREE_AND_NULL(repo->promisor_remote_config); | |
277 | } | |
fd3cb050 GC |
278 | |
279 | if (repo->remote_state) { | |
280 | remote_state_clear(repo->remote_state); | |
281 | FREE_AND_NULL(repo->remote_state); | |
282 | } | |
639e30b5 BW |
283 | } |
284 | ||
285 | int repo_read_index(struct repository *repo) | |
286 | { | |
3964fc2a DS |
287 | int res; |
288 | ||
639e30b5 | 289 | if (!repo->index) |
ca56dadb | 290 | CALLOC_ARRAY(repo->index, 1); |
639e30b5 | 291 | |
1fd9ae51 DS |
292 | /* Complete the double-reference */ |
293 | if (!repo->index->repo) | |
294 | repo->index->repo = repo; | |
295 | else if (repo->index->repo != repo) | |
296 | BUG("repo's index should point back at itself"); | |
297 | ||
3964fc2a DS |
298 | res = read_index_from(repo->index, repo->index_file, repo->gitdir); |
299 | ||
300 | prepare_repo_settings(repo); | |
301 | if (repo->settings.command_requires_full_index) | |
302 | ensure_full_index(repo->index); | |
303 | ||
304 | return res; | |
359efeff | 305 | } |
3a95f31d NTND |
306 | |
307 | int repo_hold_locked_index(struct repository *repo, | |
308 | struct lock_file *lf, | |
309 | int flags) | |
310 | { | |
311 | if (!repo->index_file) | |
312 | BUG("the repo hasn't been setup"); | |
313 | return hold_lock_file_for_update(lf, repo->index_file, flags); | |
314 | } |