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