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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" |
359efeff BW |
13 | |
14 | /* The main repository */ | |
b2f0ecee NTND |
15 | static struct repository the_repo; |
16 | struct repository *the_repository; | |
f8adbec9 | 17 | struct index_state the_index; |
b2f0ecee NTND |
18 | |
19 | void initialize_the_repository(void) | |
20 | { | |
21 | the_repository = &the_repo; | |
22 | ||
23 | the_repo.index = &the_index; | |
90c62155 | 24 | the_repo.objects = raw_object_store_new(); |
99bf115c SB |
25 | the_repo.parsed_objects = parsed_object_pool_new(); |
26 | ||
b2f0ecee NTND |
27 | repo_set_hash_algo(&the_repo, GIT_HASH_SHA1); |
28 | } | |
359efeff | 29 | |
357a03eb NTND |
30 | static void expand_base_dir(char **out, const char *in, |
31 | const char *base_dir, const char *def_in) | |
32 | { | |
33 | free(*out); | |
34 | if (in) | |
35 | *out = xstrdup(in); | |
36 | else | |
37 | *out = xstrfmt("%s/%s", base_dir, def_in); | |
38 | } | |
39 | ||
40 | static void repo_set_commondir(struct repository *repo, | |
41 | const char *commondir) | |
359efeff BW |
42 | { |
43 | struct strbuf sb = STRBUF_INIT; | |
44 | ||
f9b7573f | 45 | free(repo->commondir); |
357a03eb NTND |
46 | |
47 | if (commondir) { | |
48 | repo->different_commondir = 1; | |
49 | repo->commondir = xstrdup(commondir); | |
50 | return; | |
51 | } | |
52 | ||
53 | repo->different_commondir = get_common_dir_noenv(&sb, repo->gitdir); | |
359efeff | 54 | repo->commondir = strbuf_detach(&sb, NULL); |
359efeff BW |
55 | } |
56 | ||
357a03eb NTND |
57 | void repo_set_gitdir(struct repository *repo, |
58 | const char *root, | |
59 | const struct set_gitdir_args *o) | |
359efeff | 60 | { |
357a03eb NTND |
61 | const char *gitfile = read_gitfile(root); |
62 | /* | |
63 | * repo->gitdir is saved because the caller could pass "root" | |
64 | * that also points to repo->gitdir. We want to keep it alive | |
65 | * until after xstrdup(root). Then we can free it. | |
66 | */ | |
1fb2b636 | 67 | char *old_gitdir = repo->gitdir; |
359efeff | 68 | |
357a03eb | 69 | repo->gitdir = xstrdup(gitfile ? gitfile : root); |
1fb2b636 | 70 | free(old_gitdir); |
357a03eb NTND |
71 | |
72 | repo_set_commondir(repo, o->commondir); | |
f0eaf638 JK |
73 | |
74 | if (!repo->objects->odb) { | |
75 | repo->objects->odb = xcalloc(1, sizeof(*repo->objects->odb)); | |
76 | repo->objects->odb_tail = &repo->objects->odb->next; | |
77 | } | |
78 | expand_base_dir(&repo->objects->odb->path, o->object_dir, | |
357a03eb | 79 | repo->commondir, "objects"); |
f0eaf638 | 80 | |
90c62155 SB |
81 | free(repo->objects->alternate_db); |
82 | repo->objects->alternate_db = xstrdup_or_null(o->alternate_db); | |
357a03eb NTND |
83 | expand_base_dir(&repo->graft_file, o->graft_file, |
84 | repo->commondir, "info/grafts"); | |
85 | expand_base_dir(&repo->index_file, o->index_file, | |
86 | repo->gitdir, "index"); | |
359efeff BW |
87 | } |
88 | ||
78a67668 | 89 | void repo_set_hash_algo(struct repository *repo, int hash_algo) |
90 | { | |
91 | repo->hash_algo = &hash_algos[hash_algo]; | |
94127599 | 92 | #ifndef ENABLE_SHA256 |
93 | if (hash_algo != GIT_HASH_SHA1) | |
94 | die(_("The hash algorithm %s is not supported in this build."), repo->hash_algo->name); | |
95 | #endif | |
78a67668 | 96 | } |
97 | ||
359efeff BW |
98 | /* |
99 | * Attempt to resolve and set the provided 'gitdir' for repository 'repo'. | |
100 | * Return 0 upon success and a non-zero value upon failure. | |
101 | */ | |
102 | static int repo_init_gitdir(struct repository *repo, const char *gitdir) | |
103 | { | |
104 | int ret = 0; | |
105 | int error = 0; | |
106 | char *abspath = NULL; | |
107 | const char *resolved_gitdir; | |
357a03eb | 108 | struct set_gitdir_args args = { NULL }; |
359efeff BW |
109 | |
110 | abspath = real_pathdup(gitdir, 0); | |
111 | if (!abspath) { | |
112 | ret = -1; | |
113 | goto out; | |
114 | } | |
115 | ||
116 | /* 'gitdir' must reference the gitdir directly */ | |
117 | resolved_gitdir = resolve_gitdir_gently(abspath, &error); | |
118 | if (!resolved_gitdir) { | |
119 | ret = -1; | |
120 | goto out; | |
121 | } | |
122 | ||
357a03eb | 123 | repo_set_gitdir(repo, resolved_gitdir, &args); |
359efeff BW |
124 | |
125 | out: | |
126 | free(abspath); | |
127 | return ret; | |
128 | } | |
129 | ||
130 | void repo_set_worktree(struct repository *repo, const char *path) | |
131 | { | |
132 | repo->worktree = real_pathdup(path, 1); | |
ee4512ed JH |
133 | |
134 | trace2_def_repo(repo); | |
359efeff BW |
135 | } |
136 | ||
137 | static int read_and_verify_repository_format(struct repository_format *format, | |
138 | const char *commondir) | |
139 | { | |
140 | int ret = 0; | |
141 | struct strbuf sb = STRBUF_INIT; | |
142 | ||
143 | strbuf_addf(&sb, "%s/config", commondir); | |
144 | read_repository_format(format, sb.buf); | |
145 | strbuf_reset(&sb); | |
146 | ||
147 | if (verify_repository_format(format, &sb) < 0) { | |
148 | warning("%s", sb.buf); | |
149 | ret = -1; | |
150 | } | |
151 | ||
152 | strbuf_release(&sb); | |
153 | return ret; | |
154 | } | |
155 | ||
156 | /* | |
157 | * Initialize 'repo' based on the provided 'gitdir'. | |
158 | * Return 0 upon success and a non-zero value upon failure. | |
159 | */ | |
da62f786 SB |
160 | int repo_init(struct repository *repo, |
161 | const char *gitdir, | |
162 | const char *worktree) | |
359efeff | 163 | { |
e8805af1 | 164 | struct repository_format format = REPOSITORY_FORMAT_INIT; |
359efeff BW |
165 | memset(repo, 0, sizeof(*repo)); |
166 | ||
90c62155 | 167 | repo->objects = raw_object_store_new(); |
99bf115c | 168 | repo->parsed_objects = parsed_object_pool_new(); |
90c62155 | 169 | |
359efeff BW |
170 | if (repo_init_gitdir(repo, gitdir)) |
171 | goto error; | |
172 | ||
173 | if (read_and_verify_repository_format(&format, repo->commondir)) | |
174 | goto error; | |
175 | ||
78a67668 | 176 | repo_set_hash_algo(repo, format.hash_algo); |
177 | ||
359efeff BW |
178 | if (worktree) |
179 | repo_set_worktree(repo, worktree); | |
180 | ||
e8805af1 | 181 | clear_repository_format(&format); |
359efeff BW |
182 | return 0; |
183 | ||
184 | error: | |
185 | repo_clear(repo); | |
186 | return -1; | |
187 | } | |
188 | ||
d5498e08 | 189 | int repo_submodule_init(struct repository *subrepo, |
96dc883b | 190 | struct repository *superproject, |
d5498e08 | 191 | const struct submodule *sub) |
96dc883b | 192 | { |
96dc883b BW |
193 | struct strbuf gitdir = STRBUF_INIT; |
194 | struct strbuf worktree = STRBUF_INIT; | |
195 | int ret = 0; | |
196 | ||
96dc883b BW |
197 | if (!sub) { |
198 | ret = -1; | |
199 | goto out; | |
200 | } | |
201 | ||
d5498e08 SB |
202 | strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", sub->path); |
203 | strbuf_repo_worktree_path(&worktree, superproject, "%s", sub->path); | |
96dc883b | 204 | |
d5498e08 | 205 | if (repo_init(subrepo, gitdir.buf, worktree.buf)) { |
96dc883b | 206 | /* |
15beaaa3 | 207 | * If initialization fails then it may be due to the submodule |
96dc883b | 208 | * not being populated in the superproject's worktree. Instead |
15beaaa3 | 209 | * we can try to initialize the submodule by finding it's gitdir |
96dc883b BW |
210 | * in the superproject's 'modules' directory. In this case the |
211 | * submodule would not have a worktree. | |
212 | */ | |
213 | strbuf_reset(&gitdir); | |
214 | strbuf_repo_git_path(&gitdir, superproject, | |
215 | "modules/%s", sub->name); | |
216 | ||
d5498e08 | 217 | if (repo_init(subrepo, gitdir.buf, NULL)) { |
96dc883b BW |
218 | ret = -1; |
219 | goto out; | |
220 | } | |
221 | } | |
222 | ||
d5498e08 SB |
223 | subrepo->submodule_prefix = xstrfmt("%s%s/", |
224 | superproject->submodule_prefix ? | |
225 | superproject->submodule_prefix : | |
226 | "", sub->path); | |
96dc883b BW |
227 | |
228 | out: | |
229 | strbuf_release(&gitdir); | |
230 | strbuf_release(&worktree); | |
231 | return ret; | |
232 | } | |
233 | ||
359efeff BW |
234 | void repo_clear(struct repository *repo) |
235 | { | |
90dd04aa RS |
236 | FREE_AND_NULL(repo->gitdir); |
237 | FREE_AND_NULL(repo->commondir); | |
90dd04aa RS |
238 | FREE_AND_NULL(repo->graft_file); |
239 | FREE_AND_NULL(repo->index_file); | |
240 | FREE_AND_NULL(repo->worktree); | |
241 | FREE_AND_NULL(repo->submodule_prefix); | |
3b256228 | 242 | |
90c62155 SB |
243 | raw_object_store_clear(repo->objects); |
244 | FREE_AND_NULL(repo->objects); | |
245 | ||
99bf115c SB |
246 | parsed_object_pool_clear(repo->parsed_objects); |
247 | FREE_AND_NULL(repo->parsed_objects); | |
248 | ||
3b256228 BW |
249 | if (repo->config) { |
250 | git_configset_clear(repo->config); | |
90dd04aa | 251 | FREE_AND_NULL(repo->config); |
3b256228 | 252 | } |
639e30b5 | 253 | |
bf12fcdf BW |
254 | if (repo->submodule_cache) { |
255 | submodule_cache_free(repo->submodule_cache); | |
256 | repo->submodule_cache = NULL; | |
257 | } | |
258 | ||
639e30b5 BW |
259 | if (repo->index) { |
260 | discard_index(repo->index); | |
74373b5f NTND |
261 | if (repo->index != &the_index) |
262 | FREE_AND_NULL(repo->index); | |
639e30b5 BW |
263 | } |
264 | } | |
265 | ||
266 | int repo_read_index(struct repository *repo) | |
267 | { | |
268 | if (!repo->index) | |
269 | repo->index = xcalloc(1, sizeof(*repo->index)); | |
639e30b5 | 270 | |
a125a223 | 271 | return read_index_from(repo->index, repo->index_file, repo->gitdir); |
359efeff | 272 | } |
3a95f31d NTND |
273 | |
274 | int repo_hold_locked_index(struct repository *repo, | |
275 | struct lock_file *lf, | |
276 | int flags) | |
277 | { | |
278 | if (!repo->index_file) | |
279 | BUG("the repo hasn't been setup"); | |
280 | return hold_lock_file_for_update(lf, repo->index_file, flags); | |
281 | } |