2 #include "repository.h"
4 #include "submodule-config.h"
7 #include "object-store.h"
8 #include "parse-options.h"
11 * submodule cache lookup structure
12 * There is one shared set of 'struct submodule' entries which can be
13 * looked up by their sha1 blob id of the .gitmodules file and either
14 * using path or name as key.
15 * for_path stores submodule entries with path as key
16 * for_name stores submodule entries with name as key
18 struct submodule_cache {
19 struct hashmap for_path;
20 struct hashmap for_name;
21 unsigned initialized:1;
22 unsigned gitmodules_read:1;
26 * thin wrapper struct needed to insert 'struct submodule' entries to
29 struct submodule_entry {
30 struct hashmap_entry ent;
31 struct submodule *config;
39 static int config_path_cmp(const void *unused_cmp_data,
41 const void *entry_or_key,
42 const void *unused_keydata)
44 const struct submodule_entry *a = entry;
45 const struct submodule_entry *b = entry_or_key;
47 return strcmp(a->config->path, b->config->path) ||
48 oidcmp(&a->config->gitmodules_oid, &b->config->gitmodules_oid);
51 static int config_name_cmp(const void *unused_cmp_data,
53 const void *entry_or_key,
54 const void *unused_keydata)
56 const struct submodule_entry *a = entry;
57 const struct submodule_entry *b = entry_or_key;
59 return strcmp(a->config->name, b->config->name) ||
60 oidcmp(&a->config->gitmodules_oid, &b->config->gitmodules_oid);
63 static struct submodule_cache *submodule_cache_alloc(void)
65 return xcalloc(1, sizeof(struct submodule_cache));
68 static void submodule_cache_init(struct submodule_cache *cache)
70 hashmap_init(&cache->for_path, config_path_cmp, NULL, 0);
71 hashmap_init(&cache->for_name, config_name_cmp, NULL, 0);
72 cache->initialized = 1;
75 static void free_one_config(struct submodule_entry *entry)
77 free((void *) entry->config->path);
78 free((void *) entry->config->name);
79 free((void *) entry->config->branch);
80 free((void *) entry->config->update_strategy.command);
84 static void submodule_cache_clear(struct submodule_cache *cache)
86 struct hashmap_iter iter;
87 struct submodule_entry *entry;
89 if (!cache->initialized)
93 * We iterate over the name hash here to be symmetric with the
94 * allocation of struct submodule entries. Each is allocated by
95 * their .gitmodules blob sha1 and submodule name.
97 hashmap_iter_init(&cache->for_name, &iter);
98 while ((entry = hashmap_iter_next(&iter)))
99 free_one_config(entry);
101 hashmap_free(&cache->for_path, 1);
102 hashmap_free(&cache->for_name, 1);
103 cache->initialized = 0;
104 cache->gitmodules_read = 0;
107 void submodule_cache_free(struct submodule_cache *cache)
109 submodule_cache_clear(cache);
113 static unsigned int hash_oid_string(const struct object_id *oid,
116 return memhash(oid->hash, the_hash_algo->rawsz) + strhash(string);
119 static void cache_put_path(struct submodule_cache *cache,
120 struct submodule *submodule)
122 unsigned int hash = hash_oid_string(&submodule->gitmodules_oid,
124 struct submodule_entry *e = xmalloc(sizeof(*e));
125 hashmap_entry_init(e, hash);
126 e->config = submodule;
127 hashmap_put(&cache->for_path, e);
130 static void cache_remove_path(struct submodule_cache *cache,
131 struct submodule *submodule)
133 unsigned int hash = hash_oid_string(&submodule->gitmodules_oid,
135 struct submodule_entry e;
136 struct submodule_entry *removed;
137 hashmap_entry_init(&e, hash);
138 e.config = submodule;
139 removed = hashmap_remove(&cache->for_path, &e, NULL);
143 static void cache_add(struct submodule_cache *cache,
144 struct submodule *submodule)
146 unsigned int hash = hash_oid_string(&submodule->gitmodules_oid,
148 struct submodule_entry *e = xmalloc(sizeof(*e));
149 hashmap_entry_init(e, hash);
150 e->config = submodule;
151 hashmap_add(&cache->for_name, e);
154 static const struct submodule *cache_lookup_path(struct submodule_cache *cache,
155 const struct object_id *gitmodules_oid, const char *path)
157 struct submodule_entry *entry;
158 unsigned int hash = hash_oid_string(gitmodules_oid, path);
159 struct submodule_entry key;
160 struct submodule key_config;
162 oidcpy(&key_config.gitmodules_oid, gitmodules_oid);
163 key_config.path = path;
165 hashmap_entry_init(&key, hash);
166 key.config = &key_config;
168 entry = hashmap_get(&cache->for_path, &key, NULL);
170 return entry->config;
174 static struct submodule *cache_lookup_name(struct submodule_cache *cache,
175 const struct object_id *gitmodules_oid, const char *name)
177 struct submodule_entry *entry;
178 unsigned int hash = hash_oid_string(gitmodules_oid, name);
179 struct submodule_entry key;
180 struct submodule key_config;
182 oidcpy(&key_config.gitmodules_oid, gitmodules_oid);
183 key_config.name = name;
185 hashmap_entry_init(&key, hash);
186 key.config = &key_config;
188 entry = hashmap_get(&cache->for_name, &key, NULL);
190 return entry->config;
194 int check_submodule_name(const char *name)
196 /* Disallow empty names */
201 * Look for '..' as a path component. Check both '/' and '\\' as
202 * separators rather than is_dir_sep(), because we want the name rules
203 * to be consistent across platforms.
205 goto in_component; /* always start inside component */
208 if (c == '/' || c == '\\') {
210 if (name[0] == '.' && name[1] == '.' &&
211 (!name[2] || name[2] == '/' || name[2] == '\\'))
219 static int name_and_item_from_var(const char *var, struct strbuf *name,
222 const char *subsection, *key;
223 int subsection_len, parse;
224 parse = parse_config_key(var, "submodule", &subsection,
225 &subsection_len, &key);
226 if (parse < 0 || !subsection)
229 strbuf_add(name, subsection, subsection_len);
230 if (check_submodule_name(name->buf) < 0) {
231 warning(_("ignoring suspicious submodule name: %s"), name->buf);
232 strbuf_release(name);
236 strbuf_addstr(item, key);
241 static struct submodule *lookup_or_create_by_name(struct submodule_cache *cache,
242 const struct object_id *gitmodules_oid, const char *name)
244 struct submodule *submodule;
245 struct strbuf name_buf = STRBUF_INIT;
247 submodule = cache_lookup_name(cache, gitmodules_oid, name);
251 submodule = xmalloc(sizeof(*submodule));
253 strbuf_addstr(&name_buf, name);
254 submodule->name = strbuf_detach(&name_buf, NULL);
256 submodule->path = NULL;
257 submodule->url = NULL;
258 submodule->update_strategy.type = SM_UPDATE_UNSPECIFIED;
259 submodule->update_strategy.command = NULL;
260 submodule->fetch_recurse = RECURSE_SUBMODULES_NONE;
261 submodule->ignore = NULL;
262 submodule->branch = NULL;
263 submodule->recommend_shallow = -1;
265 oidcpy(&submodule->gitmodules_oid, gitmodules_oid);
267 cache_add(cache, submodule);
272 static int parse_fetch_recurse(const char *opt, const char *arg,
275 switch (git_parse_maybe_bool(arg)) {
277 return RECURSE_SUBMODULES_ON;
279 return RECURSE_SUBMODULES_OFF;
281 if (!strcmp(arg, "on-demand"))
282 return RECURSE_SUBMODULES_ON_DEMAND;
285 die("bad %s argument: %s", opt, arg);
287 return RECURSE_SUBMODULES_ERROR;
291 int parse_submodule_fetchjobs(const char *var, const char *value)
293 int fetchjobs = git_config_int(var, value);
295 die(_("negative values not allowed for submodule.fetchjobs"));
299 int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg)
301 return parse_fetch_recurse(opt, arg, 1);
304 int option_fetch_parse_recurse_submodules(const struct option *opt,
305 const char *arg, int unset)
315 *v = RECURSE_SUBMODULES_OFF;
318 *v = parse_fetch_recurse_submodules_arg(opt->long_name, arg);
320 *v = RECURSE_SUBMODULES_ON;
325 static int parse_update_recurse(const char *opt, const char *arg,
328 switch (git_parse_maybe_bool(arg)) {
330 return RECURSE_SUBMODULES_ON;
332 return RECURSE_SUBMODULES_OFF;
335 die("bad %s argument: %s", opt, arg);
336 return RECURSE_SUBMODULES_ERROR;
340 int parse_update_recurse_submodules_arg(const char *opt, const char *arg)
342 return parse_update_recurse(opt, arg, 1);
345 static int parse_push_recurse(const char *opt, const char *arg,
348 switch (git_parse_maybe_bool(arg)) {
350 /* There's no simple "on" value when pushing */
352 die("bad %s argument: %s", opt, arg);
354 return RECURSE_SUBMODULES_ERROR;
356 return RECURSE_SUBMODULES_OFF;
358 if (!strcmp(arg, "on-demand"))
359 return RECURSE_SUBMODULES_ON_DEMAND;
360 else if (!strcmp(arg, "check"))
361 return RECURSE_SUBMODULES_CHECK;
362 else if (!strcmp(arg, "only"))
363 return RECURSE_SUBMODULES_ONLY;
364 else if (die_on_error)
365 die("bad %s argument: %s", opt, arg);
367 return RECURSE_SUBMODULES_ERROR;
371 int parse_push_recurse_submodules_arg(const char *opt, const char *arg)
373 return parse_push_recurse(opt, arg, 1);
376 static void warn_multiple_config(const struct object_id *treeish_name,
377 const char *name, const char *option)
379 const char *commit_string = "WORKTREE";
381 commit_string = oid_to_hex(treeish_name);
382 warning("%s:.gitmodules, multiple configurations found for "
383 "'submodule.%s.%s'. Skipping second one!",
384 commit_string, name, option);
387 struct parse_config_parameter {
388 struct submodule_cache *cache;
389 const struct object_id *treeish_name;
390 const struct object_id *gitmodules_oid;
394 static int parse_config(const char *var, const char *value, void *data)
396 struct parse_config_parameter *me = data;
397 struct submodule *submodule;
398 struct strbuf name = STRBUF_INIT, item = STRBUF_INIT;
401 /* this also ensures that we only parse submodule entries */
402 if (!name_and_item_from_var(var, &name, &item))
405 submodule = lookup_or_create_by_name(me->cache,
409 if (!strcmp(item.buf, "path")) {
411 ret = config_error_nonbool(var);
412 else if (!me->overwrite && submodule->path)
413 warn_multiple_config(me->treeish_name, submodule->name,
417 cache_remove_path(me->cache, submodule);
418 free((void *) submodule->path);
419 submodule->path = xstrdup(value);
420 cache_put_path(me->cache, submodule);
422 } else if (!strcmp(item.buf, "fetchrecursesubmodules")) {
423 /* when parsing worktree configurations we can die early */
424 int die_on_error = is_null_oid(me->gitmodules_oid);
425 if (!me->overwrite &&
426 submodule->fetch_recurse != RECURSE_SUBMODULES_NONE)
427 warn_multiple_config(me->treeish_name, submodule->name,
428 "fetchrecursesubmodules");
430 submodule->fetch_recurse = parse_fetch_recurse(
433 } else if (!strcmp(item.buf, "ignore")) {
435 ret = config_error_nonbool(var);
436 else if (!me->overwrite && submodule->ignore)
437 warn_multiple_config(me->treeish_name, submodule->name,
439 else if (strcmp(value, "untracked") &&
440 strcmp(value, "dirty") &&
441 strcmp(value, "all") &&
442 strcmp(value, "none"))
443 warning("Invalid parameter '%s' for config option "
444 "'submodule.%s.ignore'", value, name.buf);
446 free((void *) submodule->ignore);
447 submodule->ignore = xstrdup(value);
449 } else if (!strcmp(item.buf, "url")) {
451 ret = config_error_nonbool(var);
452 } else if (!me->overwrite && submodule->url) {
453 warn_multiple_config(me->treeish_name, submodule->name,
456 free((void *) submodule->url);
457 submodule->url = xstrdup(value);
459 } else if (!strcmp(item.buf, "update")) {
461 ret = config_error_nonbool(var);
462 else if (!me->overwrite &&
463 submodule->update_strategy.type != SM_UPDATE_UNSPECIFIED)
464 warn_multiple_config(me->treeish_name, submodule->name,
466 else if (parse_submodule_update_strategy(value,
467 &submodule->update_strategy) < 0)
468 die(_("invalid value for %s"), var);
469 } else if (!strcmp(item.buf, "shallow")) {
470 if (!me->overwrite && submodule->recommend_shallow != -1)
471 warn_multiple_config(me->treeish_name, submodule->name,
474 submodule->recommend_shallow =
475 git_config_bool(var, value);
476 } else if (!strcmp(item.buf, "branch")) {
477 if (!me->overwrite && submodule->branch)
478 warn_multiple_config(me->treeish_name, submodule->name,
481 free((void *)submodule->branch);
482 submodule->branch = xstrdup(value);
486 strbuf_release(&name);
487 strbuf_release(&item);
492 static int gitmodule_oid_from_commit(const struct object_id *treeish_name,
493 struct object_id *gitmodules_oid,
498 if (is_null_oid(treeish_name)) {
499 oidclr(gitmodules_oid);
503 strbuf_addf(rev, "%s:.gitmodules", oid_to_hex(treeish_name));
504 if (get_oid(rev->buf, gitmodules_oid) >= 0)
510 /* This does a lookup of a submodule configuration by name or by path
511 * (key) with on-demand reading of the appropriate .gitmodules from
514 static const struct submodule *config_from(struct submodule_cache *cache,
515 const struct object_id *treeish_name, const char *key,
516 enum lookup_type lookup_type)
518 struct strbuf rev = STRBUF_INIT;
519 unsigned long config_size;
521 struct object_id oid;
522 enum object_type type;
523 const struct submodule *submodule = NULL;
524 struct parse_config_parameter parameter;
527 * If any parameter except the cache is a NULL pointer just
528 * return the first submodule. Can be used to check whether
529 * there are any submodules parsed.
531 if (!treeish_name || !key) {
532 struct hashmap_iter iter;
533 struct submodule_entry *entry;
535 entry = hashmap_iter_first(&cache->for_name, &iter);
538 return entry->config;
541 if (!gitmodule_oid_from_commit(treeish_name, &oid, &rev))
544 switch (lookup_type) {
546 submodule = cache_lookup_name(cache, &oid, key);
549 submodule = cache_lookup_path(cache, &oid, key);
555 config = read_object_file(&oid, &type, &config_size);
556 if (!config || type != OBJ_BLOB)
559 /* fill the submodule config into the cache */
560 parameter.cache = cache;
561 parameter.treeish_name = treeish_name;
562 parameter.gitmodules_oid = &oid;
563 parameter.overwrite = 0;
564 git_config_from_mem(parse_config, CONFIG_ORIGIN_SUBMODULE_BLOB, rev.buf,
565 config, config_size, ¶meter);
566 strbuf_release(&rev);
569 switch (lookup_type) {
571 return cache_lookup_name(cache, &oid, key);
573 return cache_lookup_path(cache, &oid, key);
579 strbuf_release(&rev);
584 static void submodule_cache_check_init(struct repository *repo)
586 if (repo->submodule_cache && repo->submodule_cache->initialized)
589 if (!repo->submodule_cache)
590 repo->submodule_cache = submodule_cache_alloc();
592 submodule_cache_init(repo->submodule_cache);
595 static int gitmodules_cb(const char *var, const char *value, void *data)
597 struct repository *repo = data;
598 struct parse_config_parameter parameter;
600 parameter.cache = repo->submodule_cache;
601 parameter.treeish_name = NULL;
602 parameter.gitmodules_oid = &null_oid;
603 parameter.overwrite = 1;
605 return parse_config(var, value, ¶meter);
608 void repo_read_gitmodules(struct repository *repo)
610 submodule_cache_check_init(repo);
612 if (repo->worktree) {
615 if (repo_read_index(repo) < 0)
618 gitmodules = repo_worktree_path(repo, GITMODULES_FILE);
620 if (!is_gitmodules_unmerged(repo->index))
621 git_config_from_file(gitmodules_cb, gitmodules, repo);
626 repo->submodule_cache->gitmodules_read = 1;
629 void gitmodules_config_oid(const struct object_id *commit_oid)
631 struct strbuf rev = STRBUF_INIT;
632 struct object_id oid;
634 submodule_cache_check_init(the_repository);
636 if (gitmodule_oid_from_commit(commit_oid, &oid, &rev)) {
637 git_config_from_blob_oid(gitmodules_cb, rev.buf,
638 &oid, the_repository);
640 strbuf_release(&rev);
642 the_repository->submodule_cache->gitmodules_read = 1;
645 static void gitmodules_read_check(struct repository *repo)
647 submodule_cache_check_init(repo);
649 /* read the repo's .gitmodules file if it hasn't been already */
650 if (!repo->submodule_cache->gitmodules_read)
651 repo_read_gitmodules(repo);
654 const struct submodule *submodule_from_name(struct repository *r,
655 const struct object_id *treeish_name,
658 gitmodules_read_check(r);
659 return config_from(r->submodule_cache, treeish_name, name, lookup_name);
662 const struct submodule *submodule_from_path(struct repository *r,
663 const struct object_id *treeish_name,
666 gitmodules_read_check(r);
667 return config_from(r->submodule_cache, treeish_name, path, lookup_path);
670 void submodule_free(struct repository *r)
672 if (r->submodule_cache)
673 submodule_cache_clear(r->submodule_cache);