submodule-config.c

   1 #include "cache.h"
   2 #include "dir.h"
   3 #include "repository.h"
   4 #include "config.h"
   5 #include "submodule-config.h"
   6 #include "submodule.h"
   7 #include "strbuf.h"
   8 #include "object-store.h"
   9 #include "parse-options.h"
  10
  11 /*
  12  * submodule cache lookup structure
  13  * There is one shared set of 'struct submodule' entries which can be
  14  * looked up by their sha1 blob id of the .gitmodules file and either
  15  * using path or name as key.
  16  * for_path stores submodule entries with path as key
  17  * for_name stores submodule entries with name as key
  18  */
  19 struct submodule_cache {
  20         struct hashmap for_path;
  21         struct hashmap for_name;
  22         unsigned initialized:1;
  23         unsigned gitmodules_read:1;
  24 };
  25
  26 /*
  27  * thin wrapper struct needed to insert 'struct submodule' entries to
  28  * the hashmap
  29  */
  30 struct submodule_entry {
  31         struct hashmap_entry ent;
  32         struct submodule *config;
  33 };
  34
  35 enum lookup_type {
  36         lookup_name,
  37         lookup_path
  38 };
  39
  40 static int config_path_cmp(const void *unused_cmp_data,
  41                            const void *entry,
  42                            const void *entry_or_key,
  43                            const void *unused_keydata)
  44 {
  45         const struct submodule_entry *a = entry;
  46         const struct submodule_entry *b = entry_or_key;
  47
  48         return strcmp(a->config->path, b->config->path) ||
  49                !oideq(&a->config->gitmodules_oid, &b->config->gitmodules_oid);
  50 }
  51
  52 static int config_name_cmp(const void *unused_cmp_data,
  53                            const void *entry,
  54                            const void *entry_or_key,
  55                            const void *unused_keydata)
  56 {
  57         const struct submodule_entry *a = entry;
  58         const struct submodule_entry *b = entry_or_key;
  59
  60         return strcmp(a->config->name, b->config->name) ||
  61                !oideq(&a->config->gitmodules_oid, &b->config->gitmodules_oid);
  62 }
  63
  64 static struct submodule_cache *submodule_cache_alloc(void)
  65 {
  66         return xcalloc(1, sizeof(struct submodule_cache));
  67 }
  68
  69 static void submodule_cache_init(struct submodule_cache *cache)
  70 {
  71         hashmap_init(&cache->for_path, config_path_cmp, NULL, 0);
  72         hashmap_init(&cache->for_name, config_name_cmp, NULL, 0);
  73         cache->initialized = 1;
  74 }
  75
  76 static void free_one_config(struct submodule_entry *entry)
  77 {
  78         free((void *) entry->config->path);
  79         free((void *) entry->config->name);
  80         free((void *) entry->config->branch);
  81         free((void *) entry->config->update_strategy.command);
  82         free(entry->config);
  83 }
  84
  85 static void submodule_cache_clear(struct submodule_cache *cache)
  86 {
  87         struct hashmap_iter iter;
  88         struct submodule_entry *entry;
  89
  90         if (!cache->initialized)
  91                 return;
  92
  93         /*
  94          * We iterate over the name hash here to be symmetric with the
  95          * allocation of struct submodule entries. Each is allocated by
  96          * their .gitmodules blob sha1 and submodule name.
  97          */
  98         hashmap_iter_init(&cache->for_name, &iter);
  99         while ((entry = hashmap_iter_next(&iter)))
 100                 free_one_config(entry);
 101
 102         hashmap_free(&cache->for_path, 1);
 103         hashmap_free(&cache->for_name, 1);
 104         cache->initialized = 0;
 105         cache->gitmodules_read = 0;
 106 }
 107
 108 void submodule_cache_free(struct submodule_cache *cache)
 109 {
 110         submodule_cache_clear(cache);
 111         free(cache);
 112 }
 113
 114 static unsigned int hash_oid_string(const struct object_id *oid,
 115                                     const char *string)
 116 {
 117         return memhash(oid->hash, the_hash_algo->rawsz) + strhash(string);
 118 }
 119
 120 static void cache_put_path(struct submodule_cache *cache,
 121                            struct submodule *submodule)
 122 {
 123         unsigned int hash = hash_oid_string(&submodule->gitmodules_oid,
 124                                             submodule->path);
 125         struct submodule_entry *e = xmalloc(sizeof(*e));
 126         hashmap_entry_init(&e->ent, hash);
 127         e->config = submodule;
 128         hashmap_put(&cache->for_path, &e->ent);
 129 }
 130
 131 static void cache_remove_path(struct submodule_cache *cache,
 132                               struct submodule *submodule)
 133 {
 134         unsigned int hash = hash_oid_string(&submodule->gitmodules_oid,
 135                                             submodule->path);
 136         struct submodule_entry e;
 137         struct submodule_entry *removed;
 138         hashmap_entry_init(&e.ent, hash);
 139         e.config = submodule;
 140         removed = hashmap_remove(&cache->for_path, &e.ent, NULL);
 141         free(removed);
 142 }
 143
 144 static void cache_add(struct submodule_cache *cache,
 145                       struct submodule *submodule)
 146 {
 147         unsigned int hash = hash_oid_string(&submodule->gitmodules_oid,
 148                                             submodule->name);
 149         struct submodule_entry *e = xmalloc(sizeof(*e));
 150         hashmap_entry_init(&e->ent, hash);
 151         e->config = submodule;
 152         hashmap_add(&cache->for_name, &e->ent);
 153 }
 154
 155 static const struct submodule *cache_lookup_path(struct submodule_cache *cache,
 156                 const struct object_id *gitmodules_oid, const char *path)
 157 {
 158         struct submodule_entry *entry;
 159         unsigned int hash = hash_oid_string(gitmodules_oid, path);
 160         struct submodule_entry key;
 161         struct submodule key_config;
 162
 163         oidcpy(&key_config.gitmodules_oid, gitmodules_oid);
 164         key_config.path = path;
 165
 166         hashmap_entry_init(&key.ent, hash);
 167         key.config = &key_config;
 168
 169         entry = hashmap_get_entry(&cache->for_path, &key, NULL,
 170                                 struct submodule_entry, ent);
 171         if (entry)
 172                 return entry->config;
 173         return NULL;
 174 }
 175
 176 static struct submodule *cache_lookup_name(struct submodule_cache *cache,
 177                 const struct object_id *gitmodules_oid, const char *name)
 178 {
 179         struct submodule_entry *entry;
 180         unsigned int hash = hash_oid_string(gitmodules_oid, name);
 181         struct submodule_entry key;
 182         struct submodule key_config;
 183
 184         oidcpy(&key_config.gitmodules_oid, gitmodules_oid);
 185         key_config.name = name;
 186
 187         hashmap_entry_init(&key.ent, hash);
 188         key.config = &key_config;
 189
 190         entry = hashmap_get_entry(&cache->for_name, &key, NULL,
 191                                 struct submodule_entry, ent);
 192         if (entry)
 193                 return entry->config;
 194         return NULL;
 195 }
 196
 197 int check_submodule_name(const char *name)
 198 {
 199         /* Disallow empty names */
 200         if (!*name)
 201                 return -1;
 202
 203         /*
 204          * Look for '..' as a path component. Check both '/' and '\\' as
 205          * separators rather than is_dir_sep(), because we want the name rules
 206          * to be consistent across platforms.
 207          */
 208         goto in_component; /* always start inside component */
 209         while (*name) {
 210                 char c = *name++;
 211                 if (c == '/' || c == '\\') {
 212 in_component:
 213                         if (name[0] == '.' && name[1] == '.' &&
 214                             (!name[2] || name[2] == '/' || name[2] == '\\'))
 215                                 return -1;
 216                 }
 217         }
 218
 219         return 0;
 220 }
 221
 222 static int name_and_item_from_var(const char *var, struct strbuf *name,
 223                                   struct strbuf *item)
 224 {
 225         const char *subsection, *key;
 226         int subsection_len, parse;
 227         parse = parse_config_key(var, "submodule", &subsection,
 228                         &subsection_len, &key);
 229         if (parse < 0 || !subsection)
 230                 return 0;
 231
 232         strbuf_add(name, subsection, subsection_len);
 233         if (check_submodule_name(name->buf) < 0) {
 234                 warning(_("ignoring suspicious submodule name: %s"), name->buf);
 235                 strbuf_release(name);
 236                 return 0;
 237         }
 238
 239         strbuf_addstr(item, key);
 240
 241         return 1;
 242 }
 243
 244 static struct submodule *lookup_or_create_by_name(struct submodule_cache *cache,
 245                 const struct object_id *gitmodules_oid, const char *name)
 246 {
 247         struct submodule *submodule;
 248         struct strbuf name_buf = STRBUF_INIT;
 249
 250         submodule = cache_lookup_name(cache, gitmodules_oid, name);
 251         if (submodule)
 252                 return submodule;
 253
 254         submodule = xmalloc(sizeof(*submodule));
 255
 256         strbuf_addstr(&name_buf, name);
 257         submodule->name = strbuf_detach(&name_buf, NULL);
 258
 259         submodule->path = NULL;
 260         submodule->url = NULL;
 261         submodule->update_strategy.type = SM_UPDATE_UNSPECIFIED;
 262         submodule->update_strategy.command = NULL;
 263         submodule->fetch_recurse = RECURSE_SUBMODULES_NONE;
 264         submodule->ignore = NULL;
 265         submodule->branch = NULL;
 266         submodule->recommend_shallow = -1;
 267
 268         oidcpy(&submodule->gitmodules_oid, gitmodules_oid);
 269
 270         cache_add(cache, submodule);
 271
 272         return submodule;
 273 }
 274
 275 static int parse_fetch_recurse(const char *opt, const char *arg,
 276                                int die_on_error)
 277 {
 278         switch (git_parse_maybe_bool(arg)) {
 279         case 1:
 280                 return RECURSE_SUBMODULES_ON;
 281         case 0:
 282                 return RECURSE_SUBMODULES_OFF;
 283         default:
 284                 if (!strcmp(arg, "on-demand"))
 285                         return RECURSE_SUBMODULES_ON_DEMAND;
 286                 /*
 287                  * Please update $__git_fetch_recurse_submodules in
 288                  * git-completion.bash when you add new options.
 289                  */
 290                 if (die_on_error)
 291                         die("bad %s argument: %s", opt, arg);
 292                 else
 293                         return RECURSE_SUBMODULES_ERROR;
 294         }
 295 }
 296
 297 int parse_submodule_fetchjobs(const char *var, const char *value)
 298 {
 299         int fetchjobs = git_config_int(var, value);
 300         if (fetchjobs < 0)
 301                 die(_("negative values not allowed for submodule.fetchjobs"));
 302         return fetchjobs;
 303 }
 304
 305 int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg)
 306 {
 307         return parse_fetch_recurse(opt, arg, 1);
 308 }
 309
 310 int option_fetch_parse_recurse_submodules(const struct option *opt,
 311                                           const char *arg, int unset)
 312 {
 313         int *v;
 314
 315         if (!opt->value)
 316                 return -1;
 317
 318         v = opt->value;
 319
 320         if (unset) {
 321                 *v = RECURSE_SUBMODULES_OFF;
 322         } else {
 323                 if (arg)
 324                         *v = parse_fetch_recurse_submodules_arg(opt->long_name, arg);
 325                 else
 326                         *v = RECURSE_SUBMODULES_ON;
 327         }
 328         return 0;
 329 }
 330
 331 static int parse_update_recurse(const char *opt, const char *arg,
 332                                 int die_on_error)
 333 {
 334         switch (git_parse_maybe_bool(arg)) {
 335         case 1:
 336                 return RECURSE_SUBMODULES_ON;
 337         case 0:
 338                 return RECURSE_SUBMODULES_OFF;
 339         default:
 340                 if (die_on_error)
 341                         die("bad %s argument: %s", opt, arg);
 342                 return RECURSE_SUBMODULES_ERROR;
 343         }
 344 }
 345
 346 int parse_update_recurse_submodules_arg(const char *opt, const char *arg)
 347 {
 348         return parse_update_recurse(opt, arg, 1);
 349 }
 350
 351 static int parse_push_recurse(const char *opt, const char *arg,
 352                                int die_on_error)
 353 {
 354         switch (git_parse_maybe_bool(arg)) {
 355         case 1:
 356                 /* There's no simple "on" value when pushing */
 357                 if (die_on_error)
 358                         die("bad %s argument: %s", opt, arg);
 359                 else
 360                         return RECURSE_SUBMODULES_ERROR;
 361         case 0:
 362                 return RECURSE_SUBMODULES_OFF;
 363         default:
 364                 if (!strcmp(arg, "on-demand"))
 365                         return RECURSE_SUBMODULES_ON_DEMAND;
 366                 else if (!strcmp(arg, "check"))
 367                         return RECURSE_SUBMODULES_CHECK;
 368                 else if (!strcmp(arg, "only"))
 369                         return RECURSE_SUBMODULES_ONLY;
 370                 /*
 371                  * Please update $__git_push_recurse_submodules in
 372                  * git-completion.bash when you add new modes.
 373                  */
 374                 else if (die_on_error)
 375                         die("bad %s argument: %s", opt, arg);
 376                 else
 377                         return RECURSE_SUBMODULES_ERROR;
 378         }
 379 }
 380
 381 int parse_push_recurse_submodules_arg(const char *opt, const char *arg)
 382 {
 383         return parse_push_recurse(opt, arg, 1);
 384 }
 385
 386 static void warn_multiple_config(const struct object_id *treeish_name,
 387                                  const char *name, const char *option)
 388 {
 389         const char *commit_string = "WORKTREE";
 390         if (treeish_name)
 391                 commit_string = oid_to_hex(treeish_name);
 392         warning("%s:.gitmodules, multiple configurations found for "
 393                         "'submodule.%s.%s'. Skipping second one!",
 394                         commit_string, name, option);
 395 }
 396
 397 static void warn_command_line_option(const char *var, const char *value)
 398 {
 399         warning(_("ignoring '%s' which may be interpreted as"
 400                   " a command-line option: %s"), var, value);
 401 }
 402
 403 struct parse_config_parameter {
 404         struct submodule_cache *cache;
 405         const struct object_id *treeish_name;
 406         const struct object_id *gitmodules_oid;
 407         int overwrite;
 408 };
 409
 410 static int parse_config(const char *var, const char *value, void *data)
 411 {
 412         struct parse_config_parameter *me = data;
 413         struct submodule *submodule;
 414         struct strbuf name = STRBUF_INIT, item = STRBUF_INIT;
 415         int ret = 0;
 416
 417         /* this also ensures that we only parse submodule entries */
 418         if (!name_and_item_from_var(var, &name, &item))
 419                 return 0;
 420
 421         submodule = lookup_or_create_by_name(me->cache,
 422                                              me->gitmodules_oid,
 423                                              name.buf);
 424
 425         if (!strcmp(item.buf, "path")) {
 426                 if (!value)
 427                         ret = config_error_nonbool(var);
 428                 else if (looks_like_command_line_option(value))
 429                         warn_command_line_option(var, value);
 430                 else if (!me->overwrite && submodule->path)
 431                         warn_multiple_config(me->treeish_name, submodule->name,
 432                                         "path");
 433                 else {
 434                         if (submodule->path)
 435                                 cache_remove_path(me->cache, submodule);
 436                         free((void *) submodule->path);
 437                         submodule->path = xstrdup(value);
 438                         cache_put_path(me->cache, submodule);
 439                 }
 440         } else if (!strcmp(item.buf, "fetchrecursesubmodules")) {
 441                 /* when parsing worktree configurations we can die early */
 442                 int die_on_error = is_null_oid(me->gitmodules_oid);
 443                 if (!me->overwrite &&
 444                     submodule->fetch_recurse != RECURSE_SUBMODULES_NONE)
 445                         warn_multiple_config(me->treeish_name, submodule->name,
 446                                         "fetchrecursesubmodules");
 447                 else
 448                         submodule->fetch_recurse = parse_fetch_recurse(
 449                                                                 var, value,
 450                                                                 die_on_error);
 451         } else if (!strcmp(item.buf, "ignore")) {
 452                 if (!value)
 453                         ret = config_error_nonbool(var);
 454                 else if (!me->overwrite && submodule->ignore)
 455                         warn_multiple_config(me->treeish_name, submodule->name,
 456                                         "ignore");
 457                 else if (strcmp(value, "untracked") &&
 458                          strcmp(value, "dirty") &&
 459                          strcmp(value, "all") &&
 460                          strcmp(value, "none"))
 461                         warning("Invalid parameter '%s' for config option "
 462                                         "'submodule.%s.ignore'", value, name.buf);
 463                 else {
 464                         free((void *) submodule->ignore);
 465                         submodule->ignore = xstrdup(value);
 466                 }
 467         } else if (!strcmp(item.buf, "url")) {
 468                 if (!value) {
 469                         ret = config_error_nonbool(var);
 470                 } else if (looks_like_command_line_option(value)) {
 471                         warn_command_line_option(var, value);
 472                 } else if (!me->overwrite && submodule->url) {
 473                         warn_multiple_config(me->treeish_name, submodule->name,
 474                                         "url");
 475                 } else {
 476                         free((void *) submodule->url);
 477                         submodule->url = xstrdup(value);
 478                 }
 479         } else if (!strcmp(item.buf, "update")) {
 480                 if (!value)
 481                         ret = config_error_nonbool(var);
 482                 else if (!me->overwrite &&
 483                          submodule->update_strategy.type != SM_UPDATE_UNSPECIFIED)
 484                         warn_multiple_config(me->treeish_name, submodule->name,
 485                                              "update");
 486                 else if (parse_submodule_update_strategy(value,
 487                          &submodule->update_strategy) < 0)
 488                                 die(_("invalid value for %s"), var);
 489         } else if (!strcmp(item.buf, "shallow")) {
 490                 if (!me->overwrite && submodule->recommend_shallow != -1)
 491                         warn_multiple_config(me->treeish_name, submodule->name,
 492                                              "shallow");
 493                 else
 494                         submodule->recommend_shallow =
 495                                 git_config_bool(var, value);
 496         } else if (!strcmp(item.buf, "branch")) {
 497                 if (!me->overwrite && submodule->branch)
 498                         warn_multiple_config(me->treeish_name, submodule->name,
 499                                              "branch");
 500                 else {
 501                         free((void *)submodule->branch);
 502                         submodule->branch = xstrdup(value);
 503                 }
 504         }
 505
 506         strbuf_release(&name);
 507         strbuf_release(&item);
 508
 509         return ret;
 510 }
 511
 512 static int gitmodule_oid_from_commit(const struct object_id *treeish_name,
 513                                      struct object_id *gitmodules_oid,
 514                                      struct strbuf *rev)
 515 {
 516         int ret = 0;
 517
 518         if (is_null_oid(treeish_name)) {
 519                 oidclr(gitmodules_oid);
 520                 return 1;
 521         }
 522
 523         strbuf_addf(rev, "%s:.gitmodules", oid_to_hex(treeish_name));
 524         if (get_oid(rev->buf, gitmodules_oid) >= 0)
 525                 ret = 1;
 526
 527         return ret;
 528 }
 529
 530 /* This does a lookup of a submodule configuration by name or by path
 531  * (key) with on-demand reading of the appropriate .gitmodules from
 532  * revisions.
 533  */
 534 static const struct submodule *config_from(struct submodule_cache *cache,
 535                 const struct object_id *treeish_name, const char *key,
 536                 enum lookup_type lookup_type)
 537 {
 538         struct strbuf rev = STRBUF_INIT;
 539         unsigned long config_size;
 540         char *config = NULL;
 541         struct object_id oid;
 542         enum object_type type;
 543         const struct submodule *submodule = NULL;
 544         struct parse_config_parameter parameter;
 545
 546         /*
 547          * If any parameter except the cache is a NULL pointer just
 548          * return the first submodule. Can be used to check whether
 549          * there are any submodules parsed.
 550          */
 551         if (!treeish_name || !key) {
 552                 struct hashmap_iter iter;
 553                 struct submodule_entry *entry;
 554
 555                 entry = hashmap_iter_first(&cache->for_name, &iter);
 556                 if (!entry)
 557                         return NULL;
 558                 return entry->config;
 559         }
 560
 561         if (!gitmodule_oid_from_commit(treeish_name, &oid, &rev))
 562                 goto out;
 563
 564         switch (lookup_type) {
 565         case lookup_name:
 566                 submodule = cache_lookup_name(cache, &oid, key);
 567                 break;
 568         case lookup_path:
 569                 submodule = cache_lookup_path(cache, &oid, key);
 570                 break;
 571         }
 572         if (submodule)
 573                 goto out;
 574
 575         config = read_object_file(&oid, &type, &config_size);
 576         if (!config || type != OBJ_BLOB)
 577                 goto out;
 578
 579         /* fill the submodule config into the cache */
 580         parameter.cache = cache;
 581         parameter.treeish_name = treeish_name;
 582         parameter.gitmodules_oid = &oid;
 583         parameter.overwrite = 0;
 584         git_config_from_mem(parse_config, CONFIG_ORIGIN_SUBMODULE_BLOB, rev.buf,
 585                         config, config_size, &parameter, NULL);
 586         strbuf_release(&rev);
 587         free(config);
 588
 589         switch (lookup_type) {
 590         case lookup_name:
 591                 return cache_lookup_name(cache, &oid, key);
 592         case lookup_path:
 593                 return cache_lookup_path(cache, &oid, key);
 594         default:
 595                 return NULL;
 596         }
 597
 598 out:
 599         strbuf_release(&rev);
 600         free(config);
 601         return submodule;
 602 }
 603
 604 static void submodule_cache_check_init(struct repository *repo)
 605 {
 606         if (repo->submodule_cache && repo->submodule_cache->initialized)
 607                 return;
 608
 609         if (!repo->submodule_cache)
 610                 repo->submodule_cache = submodule_cache_alloc();
 611
 612         submodule_cache_init(repo->submodule_cache);
 613 }
 614
 615 /*
 616  * Note: This function is private for a reason, the '.gitmodules' file should
 617  * not be used as as a mechanism to retrieve arbitrary configuration stored in
 618  * the repository.
 619  *
 620  * Runs the provided config function on the '.gitmodules' file found in the
 621  * working directory.
 622  */
 623 static void config_from_gitmodules(config_fn_t fn, struct repository *repo, void *data)
 624 {
 625         if (repo->worktree) {
 626                 struct git_config_source config_source = { 0 };
 627                 const struct config_options opts = { 0 };
 628                 struct object_id oid;
 629                 char *file;
 630                 char *oidstr = NULL;
 631
 632                 file = repo_worktree_path(repo, GITMODULES_FILE);
 633                 if (file_exists(file)) {
 634                         config_source.file = file;
 635                 } else if (repo_get_oid(repo, GITMODULES_INDEX, &oid) >= 0 ||
 636                            repo_get_oid(repo, GITMODULES_HEAD, &oid) >= 0) {
 637                         config_source.blob = oidstr = xstrdup(oid_to_hex(&oid));
 638                         if (repo != the_repository)
 639                                 add_to_alternates_memory(repo->objects->odb->path);
 640                 } else {
 641                         goto out;
 642                 }
 643
 644                 config_with_options(fn, data, &config_source, &opts);
 645
 646 out:
 647                 free(oidstr);
 648                 free(file);
 649         }
 650 }
 651
 652 static int gitmodules_cb(const char *var, const char *value, void *data)
 653 {
 654         struct repository *repo = data;
 655         struct parse_config_parameter parameter;
 656
 657         parameter.cache = repo->submodule_cache;
 658         parameter.treeish_name = NULL;
 659         parameter.gitmodules_oid = &null_oid;
 660         parameter.overwrite = 1;
 661
 662         return parse_config(var, value, &parameter);
 663 }
 664
 665 void repo_read_gitmodules(struct repository *repo)
 666 {
 667         submodule_cache_check_init(repo);
 668
 669         if (repo_read_index(repo) < 0)
 670                 return;
 671
 672         if (!is_gitmodules_unmerged(repo->index))
 673                 config_from_gitmodules(gitmodules_cb, repo, repo);
 674
 675         repo->submodule_cache->gitmodules_read = 1;
 676 }
 677
 678 void gitmodules_config_oid(const struct object_id *commit_oid)
 679 {
 680         struct strbuf rev = STRBUF_INIT;
 681         struct object_id oid;
 682
 683         submodule_cache_check_init(the_repository);
 684
 685         if (gitmodule_oid_from_commit(commit_oid, &oid, &rev)) {
 686                 git_config_from_blob_oid(gitmodules_cb, rev.buf,
 687                                          &oid, the_repository);
 688         }
 689         strbuf_release(&rev);
 690
 691         the_repository->submodule_cache->gitmodules_read = 1;
 692 }
 693
 694 static void gitmodules_read_check(struct repository *repo)
 695 {
 696         submodule_cache_check_init(repo);
 697
 698         /* read the repo's .gitmodules file if it hasn't been already */
 699         if (!repo->submodule_cache->gitmodules_read)
 700                 repo_read_gitmodules(repo);
 701 }
 702
 703 const struct submodule *submodule_from_name(struct repository *r,
 704                                             const struct object_id *treeish_name,
 705                 const char *name)
 706 {
 707         gitmodules_read_check(r);
 708         return config_from(r->submodule_cache, treeish_name, name, lookup_name);
 709 }
 710
 711 const struct submodule *submodule_from_path(struct repository *r,
 712                                             const struct object_id *treeish_name,
 713                 const char *path)
 714 {
 715         gitmodules_read_check(r);
 716         return config_from(r->submodule_cache, treeish_name, path, lookup_path);
 717 }
 718
 719 void submodule_free(struct repository *r)
 720 {
 721         if (r->submodule_cache)
 722                 submodule_cache_clear(r->submodule_cache);
 723 }
 724
 725 static int config_print_callback(const char *var, const char *value, void *cb_data)
 726 {
 727         char *wanted_key = cb_data;
 728
 729         if (!strcmp(wanted_key, var))
 730                 printf("%s\n", value);
 731
 732         return 0;
 733 }
 734
 735 int print_config_from_gitmodules(struct repository *repo, const char *key)
 736 {
 737         int ret;
 738         char *store_key;
 739
 740         ret = git_config_parse_key(key, &store_key, NULL);
 741         if (ret < 0)
 742                 return CONFIG_INVALID_KEY;
 743
 744         config_from_gitmodules(config_print_callback, repo, store_key);
 745
 746         free(store_key);
 747         return 0;
 748 }
 749
 750 int config_set_in_gitmodules_file_gently(const char *key, const char *value)
 751 {
 752         int ret;
 753
 754         ret = git_config_set_in_file_gently(GITMODULES_FILE, key, value);
 755         if (ret < 0)
 756                 /* Maybe the user already did that, don't error out here */
 757                 warning(_("Could not update .gitmodules entry %s"), key);
 758
 759         return ret;
 760 }
 761
 762 struct fetch_config {
 763         int *max_children;
 764         int *recurse_submodules;
 765 };
 766
 767 static int gitmodules_fetch_config(const char *var, const char *value, void *cb)
 768 {
 769         struct fetch_config *config = cb;
 770         if (!strcmp(var, "submodule.fetchjobs")) {
 771                 *(config->max_children) = parse_submodule_fetchjobs(var, value);
 772                 return 0;
 773         } else if (!strcmp(var, "fetch.recursesubmodules")) {
 774                 *(config->recurse_submodules) = parse_fetch_recurse_submodules_arg(var, value);
 775                 return 0;
 776         }
 777
 778         return 0;
 779 }
 780
 781 void fetch_config_from_gitmodules(int *max_children, int *recurse_submodules)
 782 {
 783         struct fetch_config config = {
 784                 .max_children = max_children,
 785                 .recurse_submodules = recurse_submodules
 786         };
 787         config_from_gitmodules(gitmodules_fetch_config, the_repository, &config);
 788 }
 789
 790 static int gitmodules_update_clone_config(const char *var, const char *value,
 791                                           void *cb)
 792 {
 793         int *max_jobs = cb;
 794         if (!strcmp(var, "submodule.fetchjobs"))
 795                 *max_jobs = parse_submodule_fetchjobs(var, value);
 796         return 0;
 797 }
 798
 799 void update_clone_config_from_gitmodules(int *max_jobs)
 800 {
 801         config_from_gitmodules(gitmodules_update_clone_config, the_repository, &max_jobs);
 802 }