git.oblomov.eu Git - git/blob - builtin/fetch.c

   1 /*
   2  * "git fetch"
   3  */
   4 #include "cache.h"
   5 #include "refs.h"
   6 #include "commit.h"
   7 #include "builtin.h"
   8 #include "string-list.h"
   9 #include "remote.h"
  10 #include "transport.h"
  11 #include "run-command.h"
  12 #include "parse-options.h"
  13 #include "sigchain.h"
  14 #include "submodule-config.h"
  15 #include "submodule.h"
  16 #include "connected.h"
  17 #include "argv-array.h"
  18
  19 static const char * const builtin_fetch_usage[] = {
  20         N_("git fetch [<options>] [<repository> [<refspec>...]]"),
  21         N_("git fetch [<options>] <group>"),
  22         N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
  23         N_("git fetch --all [<options>]"),
  24         NULL
  25 };
  26
  27 enum {
  28         TAGS_UNSET = 0,
  29         TAGS_DEFAULT = 1,
  30         TAGS_SET = 2
  31 };
  32
  33 static int fetch_prune_config = -1; /* unspecified */
  34 static int prune = -1; /* unspecified */
  35 #define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
  36
  37 static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity;
  38 static int progress = -1, recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
  39 static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
  40 static int max_children = 1;
  41 static const char *depth;
  42 static const char *deepen_since;
  43 static const char *upload_pack;
  44 static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
  45 static struct strbuf default_rla = STRBUF_INIT;
  46 static struct transport *gtransport;
  47 static struct transport *gsecondary;
  48 static const char *submodule_prefix = "";
  49 static const char *recurse_submodules_default;
  50 static int shown_url = 0;
  51 static int refmap_alloc, refmap_nr;
  52 static const char **refmap_array;
  53
  54 static int option_parse_recurse_submodules(const struct option *opt,
  55                                    const char *arg, int unset)
  56 {
  57         if (unset) {
  58                 recurse_submodules = RECURSE_SUBMODULES_OFF;
  59         } else {
  60                 if (arg)
  61                         recurse_submodules = parse_fetch_recurse_submodules_arg(opt->long_name, arg);
  62                 else
  63                         recurse_submodules = RECURSE_SUBMODULES_ON;
  64         }
  65         return 0;
  66 }
  67
  68 static int git_fetch_config(const char *k, const char *v, void *cb)
  69 {
  70         if (!strcmp(k, "fetch.prune")) {
  71                 fetch_prune_config = git_config_bool(k, v);
  72                 return 0;
  73         }
  74         return git_default_config(k, v, cb);
  75 }
  76
  77 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
  78 {
  79         ALLOC_GROW(refmap_array, refmap_nr + 1, refmap_alloc);
  80
  81         /*
  82          * "git fetch --refmap='' origin foo"
  83          * can be used to tell the command not to store anywhere
  84          */
  85         if (*arg)
  86                 refmap_array[refmap_nr++] = arg;
  87         return 0;
  88 }
  89
  90 static struct option builtin_fetch_options[] = {
  91         OPT__VERBOSITY(&verbosity),
  92         OPT_BOOL(0, "all", &all,
  93                  N_("fetch from all remotes")),
  94         OPT_BOOL('a', "append", &append,
  95                  N_("append to .git/FETCH_HEAD instead of overwriting")),
  96         OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
  97                    N_("path to upload pack on remote end")),
  98         OPT__FORCE(&force, N_("force overwrite of local branch")),
  99         OPT_BOOL('m', "multiple", &multiple,
 100                  N_("fetch from multiple remotes")),
 101         OPT_SET_INT('t', "tags", &tags,
 102                     N_("fetch all tags and associated objects"), TAGS_SET),
 103         OPT_SET_INT('n', NULL, &tags,
 104                     N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
 105         OPT_INTEGER('j', "jobs", &max_children,
 106                     N_("number of submodules fetched in parallel")),
 107         OPT_BOOL('p', "prune", &prune,
 108                  N_("prune remote-tracking branches no longer on remote")),
 109         { OPTION_CALLBACK, 0, "recurse-submodules", NULL, N_("on-demand"),
 110                     N_("control recursive fetching of submodules"),
 111                     PARSE_OPT_OPTARG, option_parse_recurse_submodules },
 112         OPT_BOOL(0, "dry-run", &dry_run,
 113                  N_("dry run")),
 114         OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
 115         OPT_BOOL('u', "update-head-ok", &update_head_ok,
 116                     N_("allow updating of HEAD ref")),
 117         OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
 118         OPT_STRING(0, "depth", &depth, N_("depth"),
 119                    N_("deepen history of shallow clone")),
 120         OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
 121                    N_("deepen history of shallow repository based on time")),
 122         OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
 123                         N_("deepen history of shallow clone by excluding rev")),
 124         { OPTION_SET_INT, 0, "unshallow", &unshallow, NULL,
 125                    N_("convert to a complete repository"),
 126                    PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1 },
 127         { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
 128                    N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
 129         { OPTION_STRING, 0, "recurse-submodules-default",
 130                    &recurse_submodules_default, NULL,
 131                    N_("default mode for recursion"), PARSE_OPT_HIDDEN },
 132         OPT_BOOL(0, "update-shallow", &update_shallow,
 133                  N_("accept refs that update .git/shallow")),
 134         { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
 135           N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
 136         OPT_END()
 137 };
 138
 139 static void unlock_pack(void)
 140 {
 141         if (gtransport)
 142                 transport_unlock_pack(gtransport);
 143         if (gsecondary)
 144                 transport_unlock_pack(gsecondary);
 145 }
 146
 147 static void unlock_pack_on_signal(int signo)
 148 {
 149         unlock_pack();
 150         sigchain_pop(signo);
 151         raise(signo);
 152 }
 153
 154 static void add_merge_config(struct ref **head,
 155                            const struct ref *remote_refs,
 156                            struct branch *branch,
 157                            struct ref ***tail)
 158 {
 159         int i;
 160
 161         for (i = 0; i < branch->merge_nr; i++) {
 162                 struct ref *rm, **old_tail = *tail;
 163                 struct refspec refspec;
 164
 165                 for (rm = *head; rm; rm = rm->next) {
 166                         if (branch_merge_matches(branch, i, rm->name)) {
 167                                 rm->fetch_head_status = FETCH_HEAD_MERGE;
 168                                 break;
 169                         }
 170                 }
 171                 if (rm)
 172                         continue;
 173
 174                 /*
 175                  * Not fetched to a remote-tracking branch?  We need to fetch
 176                  * it anyway to allow this branch's "branch.$name.merge"
 177                  * to be honored by 'git pull', but we do not have to
 178                  * fail if branch.$name.merge is misconfigured to point
 179                  * at a nonexisting branch.  If we were indeed called by
 180                  * 'git pull', it will notice the misconfiguration because
 181                  * there is no entry in the resulting FETCH_HEAD marked
 182                  * for merging.
 183                  */
 184                 memset(&refspec, 0, sizeof(refspec));
 185                 refspec.src = branch->merge[i]->src;
 186                 get_fetch_map(remote_refs, &refspec, tail, 1);
 187                 for (rm = *old_tail; rm; rm = rm->next)
 188                         rm->fetch_head_status = FETCH_HEAD_MERGE;
 189         }
 190 }
 191
 192 static int add_existing(const char *refname, const struct object_id *oid,
 193                         int flag, void *cbdata)
 194 {
 195         struct string_list *list = (struct string_list *)cbdata;
 196         struct string_list_item *item = string_list_insert(list, refname);
 197         struct object_id *old_oid = xmalloc(sizeof(*old_oid));
 198
 199         oidcpy(old_oid, oid);
 200         item->util = old_oid;
 201         return 0;
 202 }
 203
 204 static int will_fetch(struct ref **head, const unsigned char *sha1)
 205 {
 206         struct ref *rm = *head;
 207         while (rm) {
 208                 if (!hashcmp(rm->old_oid.hash, sha1))
 209                         return 1;
 210                 rm = rm->next;
 211         }
 212         return 0;
 213 }
 214
 215 static void find_non_local_tags(struct transport *transport,
 216                         struct ref **head,
 217                         struct ref ***tail)
 218 {
 219         struct string_list existing_refs = STRING_LIST_INIT_DUP;
 220         struct string_list remote_refs = STRING_LIST_INIT_NODUP;
 221         const struct ref *ref;
 222         struct string_list_item *item = NULL;
 223
 224         for_each_ref(add_existing, &existing_refs);
 225         for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) {
 226                 if (!starts_with(ref->name, "refs/tags/"))
 227                         continue;
 228
 229                 /*
 230                  * The peeled ref always follows the matching base
 231                  * ref, so if we see a peeled ref that we don't want
 232                  * to fetch then we can mark the ref entry in the list
 233                  * as one to ignore by setting util to NULL.
 234                  */
 235                 if (ends_with(ref->name, "^{}")) {
 236                         if (item && !has_object_file(&ref->old_oid) &&
 237                             !will_fetch(head, ref->old_oid.hash) &&
 238                             !has_sha1_file(item->util) &&
 239                             !will_fetch(head, item->util))
 240                                 item->util = NULL;
 241                         item = NULL;
 242                         continue;
 243                 }
 244
 245                 /*
 246                  * If item is non-NULL here, then we previously saw a
 247                  * ref not followed by a peeled reference, so we need
 248                  * to check if it is a lightweight tag that we want to
 249                  * fetch.
 250                  */
 251                 if (item && !has_sha1_file(item->util) &&
 252                     !will_fetch(head, item->util))
 253                         item->util = NULL;
 254
 255                 item = NULL;
 256
 257                 /* skip duplicates and refs that we already have */
 258                 if (string_list_has_string(&remote_refs, ref->name) ||
 259                     string_list_has_string(&existing_refs, ref->name))
 260                         continue;
 261
 262                 item = string_list_insert(&remote_refs, ref->name);
 263                 item->util = (void *)&ref->old_oid;
 264         }
 265         string_list_clear(&existing_refs, 1);
 266
 267         /*
 268          * We may have a final lightweight tag that needs to be
 269          * checked to see if it needs fetching.
 270          */
 271         if (item && !has_sha1_file(item->util) &&
 272             !will_fetch(head, item->util))
 273                 item->util = NULL;
 274
 275         /*
 276          * For all the tags in the remote_refs string list,
 277          * add them to the list of refs to be fetched
 278          */
 279         for_each_string_list_item(item, &remote_refs) {
 280                 /* Unless we have already decided to ignore this item... */
 281                 if (item->util)
 282                 {
 283                         struct ref *rm = alloc_ref(item->string);
 284                         rm->peer_ref = alloc_ref(item->string);
 285                         oidcpy(&rm->old_oid, item->util);
 286                         **tail = rm;
 287                         *tail = &rm->next;
 288                 }
 289         }
 290
 291         string_list_clear(&remote_refs, 0);
 292 }
 293
 294 static struct ref *get_ref_map(struct transport *transport,
 295                                struct refspec *refspecs, int refspec_count,
 296                                int tags, int *autotags)
 297 {
 298         int i;
 299         struct ref *rm;
 300         struct ref *ref_map = NULL;
 301         struct ref **tail = &ref_map;
 302
 303         /* opportunistically-updated references: */
 304         struct ref *orefs = NULL, **oref_tail = &orefs;
 305
 306         const struct ref *remote_refs = transport_get_remote_refs(transport);
 307
 308         if (refspec_count) {
 309                 struct refspec *fetch_refspec;
 310                 int fetch_refspec_nr;
 311
 312                 for (i = 0; i < refspec_count; i++) {
 313                         get_fetch_map(remote_refs, &refspecs[i], &tail, 0);
 314                         if (refspecs[i].dst && refspecs[i].dst[0])
 315                                 *autotags = 1;
 316                 }
 317                 /* Merge everything on the command line (but not --tags) */
 318                 for (rm = ref_map; rm; rm = rm->next)
 319                         rm->fetch_head_status = FETCH_HEAD_MERGE;
 320
 321                 /*
 322                  * For any refs that we happen to be fetching via
 323                  * command-line arguments, the destination ref might
 324                  * have been missing or have been different than the
 325                  * remote-tracking ref that would be derived from the
 326                  * configured refspec.  In these cases, we want to
 327                  * take the opportunity to update their configured
 328                  * remote-tracking reference.  However, we do not want
 329                  * to mention these entries in FETCH_HEAD at all, as
 330                  * they would simply be duplicates of existing
 331                  * entries, so we set them FETCH_HEAD_IGNORE below.
 332                  *
 333                  * We compute these entries now, based only on the
 334                  * refspecs specified on the command line.  But we add
 335                  * them to the list following the refspecs resulting
 336                  * from the tags option so that one of the latter,
 337                  * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
 338                  * by ref_remove_duplicates() in favor of one of these
 339                  * opportunistic entries with FETCH_HEAD_IGNORE.
 340                  */
 341                 if (refmap_array) {
 342                         fetch_refspec = parse_fetch_refspec(refmap_nr, refmap_array);
 343                         fetch_refspec_nr = refmap_nr;
 344                 } else {
 345                         fetch_refspec = transport->remote->fetch;
 346                         fetch_refspec_nr = transport->remote->fetch_refspec_nr;
 347                 }
 348
 349                 for (i = 0; i < fetch_refspec_nr; i++)
 350                         get_fetch_map(ref_map, &fetch_refspec[i], &oref_tail, 1);
 351
 352                 if (tags == TAGS_SET)
 353                         get_fetch_map(remote_refs, tag_refspec, &tail, 0);
 354         } else if (refmap_array) {
 355                 die("--refmap option is only meaningful with command-line refspec(s).");
 356         } else {
 357                 /* Use the defaults */
 358                 struct remote *remote = transport->remote;
 359                 struct branch *branch = branch_get(NULL);
 360                 int has_merge = branch_has_merge_config(branch);
 361                 if (remote &&
 362                     (remote->fetch_refspec_nr ||
 363                      /* Note: has_merge implies non-NULL branch->remote_name */
 364                      (has_merge && !strcmp(branch->remote_name, remote->name)))) {
 365                         for (i = 0; i < remote->fetch_refspec_nr; i++) {
 366                                 get_fetch_map(remote_refs, &remote->fetch[i], &tail, 0);
 367                                 if (remote->fetch[i].dst &&
 368                                     remote->fetch[i].dst[0])
 369                                         *autotags = 1;
 370                                 if (!i && !has_merge && ref_map &&
 371                                     !remote->fetch[0].pattern)
 372                                         ref_map->fetch_head_status = FETCH_HEAD_MERGE;
 373                         }
 374                         /*
 375                          * if the remote we're fetching from is the same
 376                          * as given in branch.<name>.remote, we add the
 377                          * ref given in branch.<name>.merge, too.
 378                          *
 379                          * Note: has_merge implies non-NULL branch->remote_name
 380                          */
 381                         if (has_merge &&
 382                             !strcmp(branch->remote_name, remote->name))
 383                                 add_merge_config(&ref_map, remote_refs, branch, &tail);
 384                 } else {
 385                         ref_map = get_remote_ref(remote_refs, "HEAD");
 386                         if (!ref_map)
 387                                 die(_("Couldn't find remote ref HEAD"));
 388                         ref_map->fetch_head_status = FETCH_HEAD_MERGE;
 389                         tail = &ref_map->next;
 390                 }
 391         }
 392
 393         if (tags == TAGS_SET)
 394                 /* also fetch all tags */
 395                 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
 396         else if (tags == TAGS_DEFAULT && *autotags)
 397                 find_non_local_tags(transport, &ref_map, &tail);
 398
 399         /* Now append any refs to be updated opportunistically: */
 400         *tail = orefs;
 401         for (rm = orefs; rm; rm = rm->next) {
 402                 rm->fetch_head_status = FETCH_HEAD_IGNORE;
 403                 tail = &rm->next;
 404         }
 405
 406         return ref_remove_duplicates(ref_map);
 407 }
 408
 409 #define STORE_REF_ERROR_OTHER 1
 410 #define STORE_REF_ERROR_DF_CONFLICT 2
 411
 412 static int s_update_ref(const char *action,
 413                         struct ref *ref,
 414                         int check_old)
 415 {
 416         char msg[1024];
 417         char *rla = getenv("GIT_REFLOG_ACTION");
 418         struct ref_transaction *transaction;
 419         struct strbuf err = STRBUF_INIT;
 420         int ret, df_conflict = 0;
 421
 422         if (dry_run)
 423                 return 0;
 424         if (!rla)
 425                 rla = default_rla.buf;
 426         snprintf(msg, sizeof(msg), "%s: %s", rla, action);
 427
 428         transaction = ref_transaction_begin(&err);
 429         if (!transaction ||
 430             ref_transaction_update(transaction, ref->name,
 431                                    ref->new_oid.hash,
 432                                    check_old ? ref->old_oid.hash : NULL,
 433                                    0, msg, &err))
 434                 goto fail;
 435
 436         ret = ref_transaction_commit(transaction, &err);
 437         if (ret) {
 438                 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
 439                 goto fail;
 440         }
 441
 442         ref_transaction_free(transaction);
 443         strbuf_release(&err);
 444         return 0;
 445 fail:
 446         ref_transaction_free(transaction);
 447         error("%s", err.buf);
 448         strbuf_release(&err);
 449         return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
 450                            : STORE_REF_ERROR_OTHER;
 451 }
 452
 453 #define REFCOL_WIDTH  10
 454
 455 static int update_local_ref(struct ref *ref,
 456                             const char *remote,
 457                             const struct ref *remote_ref,
 458                             struct strbuf *display)
 459 {
 460         struct commit *current = NULL, *updated;
 461         enum object_type type;
 462         struct branch *current_branch = branch_get(NULL);
 463         const char *pretty_ref = prettify_refname(ref->name);
 464
 465         type = sha1_object_info(ref->new_oid.hash, NULL);
 466         if (type < 0)
 467                 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
 468
 469         if (!oidcmp(&ref->old_oid, &ref->new_oid)) {
 470                 if (verbosity > 0)
 471                         strbuf_addf(display, "= %-*s %-*s -> %s",
 472                                     TRANSPORT_SUMMARY(_("[up to date]")),
 473                                     REFCOL_WIDTH, remote, pretty_ref);
 474                 return 0;
 475         }
 476
 477         if (current_branch &&
 478             !strcmp(ref->name, current_branch->name) &&
 479             !(update_head_ok || is_bare_repository()) &&
 480             !is_null_oid(&ref->old_oid)) {
 481                 /*
 482                  * If this is the head, and it's not okay to update
 483                  * the head, and the old value of the head isn't empty...
 484                  */
 485                 strbuf_addf(display,
 486                             _("! %-*s %-*s -> %s  (can't fetch in current branch)"),
 487                             TRANSPORT_SUMMARY(_("[rejected]")),
 488                             REFCOL_WIDTH, remote, pretty_ref);
 489                 return 1;
 490         }
 491
 492         if (!is_null_oid(&ref->old_oid) &&
 493             starts_with(ref->name, "refs/tags/")) {
 494                 int r;
 495                 r = s_update_ref("updating tag", ref, 0);
 496                 strbuf_addf(display, "%c %-*s %-*s -> %s%s",
 497                             r ? '!' : '-',
 498                             TRANSPORT_SUMMARY(_("[tag update]")),
 499                             REFCOL_WIDTH, remote, pretty_ref,
 500                             r ? _("  (unable to update local ref)") : "");
 501                 return r;
 502         }
 503
 504         current = lookup_commit_reference_gently(ref->old_oid.hash, 1);
 505         updated = lookup_commit_reference_gently(ref->new_oid.hash, 1);
 506         if (!current || !updated) {
 507                 const char *msg;
 508                 const char *what;
 509                 int r;
 510                 /*
 511                  * Nicely describe the new ref we're fetching.
 512                  * Base this on the remote's ref name, as it's
 513                  * more likely to follow a standard layout.
 514                  */
 515                 const char *name = remote_ref ? remote_ref->name : "";
 516                 if (starts_with(name, "refs/tags/")) {
 517                         msg = "storing tag";
 518                         what = _("[new tag]");
 519                 } else if (starts_with(name, "refs/heads/")) {
 520                         msg = "storing head";
 521                         what = _("[new branch]");
 522                 } else {
 523                         msg = "storing ref";
 524                         what = _("[new ref]");
 525                 }
 526
 527                 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
 528                     (recurse_submodules != RECURSE_SUBMODULES_ON))
 529                         check_for_new_submodule_commits(ref->new_oid.hash);
 530                 r = s_update_ref(msg, ref, 0);
 531                 strbuf_addf(display, "%c %-*s %-*s -> %s%s",
 532                             r ? '!' : '*',
 533                             TRANSPORT_SUMMARY(what),
 534                             REFCOL_WIDTH, remote, pretty_ref,
 535                             r ? _("  (unable to update local ref)") : "");
 536                 return r;
 537         }
 538
 539         if (in_merge_bases(current, updated)) {
 540                 struct strbuf quickref = STRBUF_INIT;
 541                 int r;
 542                 strbuf_add_unique_abbrev(&quickref, current->object.oid.hash, DEFAULT_ABBREV);
 543                 strbuf_addstr(&quickref, "..");
 544                 strbuf_add_unique_abbrev(&quickref, ref->new_oid.hash, DEFAULT_ABBREV);
 545                 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
 546                     (recurse_submodules != RECURSE_SUBMODULES_ON))
 547                         check_for_new_submodule_commits(ref->new_oid.hash);
 548                 r = s_update_ref("fast-forward", ref, 1);
 549                 strbuf_addf(display, "%c %-*s %-*s -> %s%s",
 550                             r ? '!' : ' ',
 551                             TRANSPORT_SUMMARY_WIDTH, quickref.buf,
 552                             REFCOL_WIDTH, remote, pretty_ref,
 553                             r ? _("  (unable to update local ref)") : "");
 554                 strbuf_release(&quickref);
 555                 return r;
 556         } else if (force || ref->force) {
 557                 struct strbuf quickref = STRBUF_INIT;
 558                 int r;
 559                 strbuf_add_unique_abbrev(&quickref, current->object.oid.hash, DEFAULT_ABBREV);
 560                 strbuf_addstr(&quickref, "...");
 561                 strbuf_add_unique_abbrev(&quickref, ref->new_oid.hash, DEFAULT_ABBREV);
 562                 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
 563                     (recurse_submodules != RECURSE_SUBMODULES_ON))
 564                         check_for_new_submodule_commits(ref->new_oid.hash);
 565                 r = s_update_ref("forced-update", ref, 1);
 566                 strbuf_addf(display, "%c %-*s %-*s -> %s  (%s)",
 567                             r ? '!' : '+',
 568                             TRANSPORT_SUMMARY_WIDTH, quickref.buf,
 569                             REFCOL_WIDTH, remote, pretty_ref,
 570                             r ? _("unable to update local ref") : _("forced update"));
 571                 strbuf_release(&quickref);
 572                 return r;
 573         } else {
 574                 strbuf_addf(display, "! %-*s %-*s -> %s  %s",
 575                             TRANSPORT_SUMMARY(_("[rejected]")),
 576                             REFCOL_WIDTH, remote, pretty_ref,
 577                             _("(non-fast-forward)"));
 578                 return 1;
 579         }
 580 }
 581
 582 static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
 583 {
 584         struct ref **rm = cb_data;
 585         struct ref *ref = *rm;
 586
 587         while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
 588                 ref = ref->next;
 589         if (!ref)
 590                 return -1; /* end of the list */
 591         *rm = ref->next;
 592         hashcpy(sha1, ref->old_oid.hash);
 593         return 0;
 594 }
 595
 596 static int store_updated_refs(const char *raw_url, const char *remote_name,
 597                 struct ref *ref_map)
 598 {
 599         FILE *fp;
 600         struct commit *commit;
 601         int url_len, i, rc = 0;
 602         struct strbuf note = STRBUF_INIT;
 603         const char *what, *kind;
 604         struct ref *rm;
 605         char *url;
 606         const char *filename = dry_run ? "/dev/null" : git_path_fetch_head();
 607         int want_status;
 608
 609         fp = fopen(filename, "a");
 610         if (!fp)
 611                 return error(_("cannot open %s: %s\n"), filename, strerror(errno));
 612
 613         if (raw_url)
 614                 url = transport_anonymize_url(raw_url);
 615         else
 616                 url = xstrdup("foreign");
 617
 618         rm = ref_map;
 619         if (check_everything_connected(iterate_ref_map, 0, &rm)) {
 620                 rc = error(_("%s did not send all necessary objects\n"), url);
 621                 goto abort;
 622         }
 623
 624         /*
 625          * We do a pass for each fetch_head_status type in their enum order, so
 626          * merged entries are written before not-for-merge. That lets readers
 627          * use FETCH_HEAD as a refname to refer to the ref to be merged.
 628          */
 629         for (want_status = FETCH_HEAD_MERGE;
 630              want_status <= FETCH_HEAD_IGNORE;
 631              want_status++) {
 632                 for (rm = ref_map; rm; rm = rm->next) {
 633                         struct ref *ref = NULL;
 634                         const char *merge_status_marker = "";
 635
 636                         if (rm->status == REF_STATUS_REJECT_SHALLOW) {
 637                                 if (want_status == FETCH_HEAD_MERGE)
 638                                         warning(_("reject %s because shallow roots are not allowed to be updated"),
 639                                                 rm->peer_ref ? rm->peer_ref->name : rm->name);
 640                                 continue;
 641                         }
 642
 643                         commit = lookup_commit_reference_gently(rm->old_oid.hash, 1);
 644                         if (!commit)
 645                                 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
 646
 647                         if (rm->fetch_head_status != want_status)
 648                                 continue;
 649
 650                         if (rm->peer_ref) {
 651                                 ref = alloc_ref(rm->peer_ref->name);
 652                                 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
 653                                 oidcpy(&ref->new_oid, &rm->old_oid);
 654                                 ref->force = rm->peer_ref->force;
 655                         }
 656
 657
 658                         if (!strcmp(rm->name, "HEAD")) {
 659                                 kind = "";
 660                                 what = "";
 661                         }
 662                         else if (starts_with(rm->name, "refs/heads/")) {
 663                                 kind = "branch";
 664                                 what = rm->name + 11;
 665                         }
 666                         else if (starts_with(rm->name, "refs/tags/")) {
 667                                 kind = "tag";
 668                                 what = rm->name + 10;
 669                         }
 670                         else if (starts_with(rm->name, "refs/remotes/")) {
 671                                 kind = "remote-tracking branch";
 672                                 what = rm->name + 13;
 673                         }
 674                         else {
 675                                 kind = "";
 676                                 what = rm->name;
 677                         }
 678
 679                         url_len = strlen(url);
 680                         for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
 681                                 ;
 682                         url_len = i + 1;
 683                         if (4 < i && !strncmp(".git", url + i - 3, 4))
 684                                 url_len = i - 3;
 685
 686                         strbuf_reset(&note);
 687                         if (*what) {
 688                                 if (*kind)
 689                                         strbuf_addf(&note, "%s ", kind);
 690                                 strbuf_addf(&note, "'%s' of ", what);
 691                         }
 692                         switch (rm->fetch_head_status) {
 693                         case FETCH_HEAD_NOT_FOR_MERGE:
 694                                 merge_status_marker = "not-for-merge";
 695                                 /* fall-through */
 696                         case FETCH_HEAD_MERGE:
 697                                 fprintf(fp, "%s\t%s\t%s",
 698                                         oid_to_hex(&rm->old_oid),
 699                                         merge_status_marker,
 700                                         note.buf);
 701                                 for (i = 0; i < url_len; ++i)
 702                                         if ('\n' == url[i])
 703                                                 fputs("\\n", fp);
 704                                         else
 705                                                 fputc(url[i], fp);
 706                                 fputc('\n', fp);
 707                                 break;
 708                         default:
 709                                 /* do not write anything to FETCH_HEAD */
 710                                 break;
 711                         }
 712
 713                         strbuf_reset(&note);
 714                         if (ref) {
 715                                 rc |= update_local_ref(ref, what, rm, &note);
 716                                 free(ref);
 717                         } else
 718                                 strbuf_addf(&note, "* %-*s %-*s -> FETCH_HEAD",
 719                                             TRANSPORT_SUMMARY_WIDTH,
 720                                             *kind ? kind : "branch",
 721                                             REFCOL_WIDTH,
 722                                             *what ? what : "HEAD");
 723                         if (note.len) {
 724                                 if (verbosity >= 0 && !shown_url) {
 725                                         fprintf(stderr, _("From %.*s\n"),
 726                                                         url_len, url);
 727                                         shown_url = 1;
 728                                 }
 729                                 if (verbosity >= 0)
 730                                         fprintf(stderr, " %s\n", note.buf);
 731                         }
 732                 }
 733         }
 734
 735         if (rc & STORE_REF_ERROR_DF_CONFLICT)
 736                 error(_("some local refs could not be updated; try running\n"
 737                       " 'git remote prune %s' to remove any old, conflicting "
 738                       "branches"), remote_name);
 739
 740  abort:
 741         strbuf_release(&note);
 742         free(url);
 743         fclose(fp);
 744         return rc;
 745 }
 746
 747 /*
 748  * We would want to bypass the object transfer altogether if
 749  * everything we are going to fetch already exists and is connected
 750  * locally.
 751  */
 752 static int quickfetch(struct ref *ref_map)
 753 {
 754         struct ref *rm = ref_map;
 755
 756         /*
 757          * If we are deepening a shallow clone we already have these
 758          * objects reachable.  Running rev-list here will return with
 759          * a good (0) exit status and we'll bypass the fetch that we
 760          * really need to perform.  Claiming failure now will ensure
 761          * we perform the network exchange to deepen our history.
 762          */
 763         if (deepen)
 764                 return -1;
 765         return check_everything_connected(iterate_ref_map, 1, &rm);
 766 }
 767
 768 static int fetch_refs(struct transport *transport, struct ref *ref_map)
 769 {
 770         int ret = quickfetch(ref_map);
 771         if (ret)
 772                 ret = transport_fetch_refs(transport, ref_map);
 773         if (!ret)
 774                 ret |= store_updated_refs(transport->url,
 775                                 transport->remote->name,
 776                                 ref_map);
 777         transport_unlock_pack(transport);
 778         return ret;
 779 }
 780
 781 static int prune_refs(struct refspec *refs, int ref_count, struct ref *ref_map,
 782                 const char *raw_url)
 783 {
 784         int url_len, i, result = 0;
 785         struct ref *ref, *stale_refs = get_stale_heads(refs, ref_count, ref_map);
 786         char *url;
 787         const char *dangling_msg = dry_run
 788                 ? _("   (%s will become dangling)")
 789                 : _("   (%s has become dangling)");
 790
 791         if (raw_url)
 792                 url = transport_anonymize_url(raw_url);
 793         else
 794                 url = xstrdup("foreign");
 795
 796         url_len = strlen(url);
 797         for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
 798                 ;
 799
 800         url_len = i + 1;
 801         if (4 < i && !strncmp(".git", url + i - 3, 4))
 802                 url_len = i - 3;
 803
 804         if (!dry_run) {
 805                 struct string_list refnames = STRING_LIST_INIT_NODUP;
 806
 807                 for (ref = stale_refs; ref; ref = ref->next)
 808                         string_list_append(&refnames, ref->name);
 809
 810                 result = delete_refs(&refnames);
 811                 string_list_clear(&refnames, 0);
 812         }
 813
 814         if (verbosity >= 0) {
 815                 for (ref = stale_refs; ref; ref = ref->next) {
 816                         if (!shown_url) {
 817                                 fprintf(stderr, _("From %.*s\n"), url_len, url);
 818                                 shown_url = 1;
 819                         }
 820                         fprintf(stderr, " x %-*s %-*s -> %s\n",
 821                                 TRANSPORT_SUMMARY(_("[deleted]")),
 822                                 REFCOL_WIDTH, _("(none)"), prettify_refname(ref->name));
 823                         warn_dangling_symref(stderr, dangling_msg, ref->name);
 824                 }
 825         }
 826
 827         free(url);
 828         free_refs(stale_refs);
 829         return result;
 830 }
 831
 832 static void check_not_current_branch(struct ref *ref_map)
 833 {
 834         struct branch *current_branch = branch_get(NULL);
 835
 836         if (is_bare_repository() || !current_branch)
 837                 return;
 838
 839         for (; ref_map; ref_map = ref_map->next)
 840                 if (ref_map->peer_ref && !strcmp(current_branch->refname,
 841                                         ref_map->peer_ref->name))
 842                         die(_("Refusing to fetch into current branch %s "
 843                             "of non-bare repository"), current_branch->refname);
 844 }
 845
 846 static int truncate_fetch_head(void)
 847 {
 848         const char *filename = git_path_fetch_head();
 849         FILE *fp = fopen_for_writing(filename);
 850
 851         if (!fp)
 852                 return error(_("cannot open %s: %s\n"), filename, strerror(errno));
 853         fclose(fp);
 854         return 0;
 855 }
 856
 857 static void set_option(struct transport *transport, const char *name, const char *value)
 858 {
 859         int r = transport_set_option(transport, name, value);
 860         if (r < 0)
 861                 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
 862                     name, value, transport->url);
 863         if (r > 0)
 864                 warning(_("Option \"%s\" is ignored for %s\n"),
 865                         name, transport->url);
 866 }
 867
 868 static struct transport *prepare_transport(struct remote *remote, int deepen)
 869 {
 870         struct transport *transport;
 871         transport = transport_get(remote, NULL);
 872         transport_set_verbosity(transport, verbosity, progress);
 873         if (upload_pack)
 874                 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
 875         if (keep)
 876                 set_option(transport, TRANS_OPT_KEEP, "yes");
 877         if (depth)
 878                 set_option(transport, TRANS_OPT_DEPTH, depth);
 879         if (deepen && deepen_since)
 880                 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
 881         if (deepen && deepen_not.nr)
 882                 set_option(transport, TRANS_OPT_DEEPEN_NOT,
 883                            (const char *)&deepen_not);
 884         if (update_shallow)
 885                 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
 886         return transport;
 887 }
 888
 889 static void backfill_tags(struct transport *transport, struct ref *ref_map)
 890 {
 891         int cannot_reuse;
 892
 893         /*
 894          * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
 895          * when remote helper is used (setting it to an empty string
 896          * is not unsetting). We could extend the remote helper
 897          * protocol for that, but for now, just force a new connection
 898          * without deepen-since. Similar story for deepen-not.
 899          */
 900         cannot_reuse = transport->cannot_reuse ||
 901                 deepen_since || deepen_not.nr;
 902         if (cannot_reuse) {
 903                 gsecondary = prepare_transport(transport->remote, 0);
 904                 transport = gsecondary;
 905         }
 906
 907         transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
 908         transport_set_option(transport, TRANS_OPT_DEPTH, "0");
 909         fetch_refs(transport, ref_map);
 910
 911         if (gsecondary) {
 912                 transport_disconnect(gsecondary);
 913                 gsecondary = NULL;
 914         }
 915 }
 916
 917 static int do_fetch(struct transport *transport,
 918                     struct refspec *refs, int ref_count)
 919 {
 920         struct string_list existing_refs = STRING_LIST_INIT_DUP;
 921         struct ref *ref_map;
 922         struct ref *rm;
 923         int autotags = (transport->remote->fetch_tags == 1);
 924         int retcode = 0;
 925
 926         for_each_ref(add_existing, &existing_refs);
 927
 928         if (tags == TAGS_DEFAULT) {
 929                 if (transport->remote->fetch_tags == 2)
 930                         tags = TAGS_SET;
 931                 if (transport->remote->fetch_tags == -1)
 932                         tags = TAGS_UNSET;
 933         }
 934
 935         if (!transport->get_refs_list || !transport->fetch)
 936                 die(_("Don't know how to fetch from %s"), transport->url);
 937
 938         /* if not appending, truncate FETCH_HEAD */
 939         if (!append && !dry_run) {
 940                 retcode = truncate_fetch_head();
 941                 if (retcode)
 942                         goto cleanup;
 943         }
 944
 945         ref_map = get_ref_map(transport, refs, ref_count, tags, &autotags);
 946         if (!update_head_ok)
 947                 check_not_current_branch(ref_map);
 948
 949         for (rm = ref_map; rm; rm = rm->next) {
 950                 if (rm->peer_ref) {
 951                         struct string_list_item *peer_item =
 952                                 string_list_lookup(&existing_refs,
 953                                                    rm->peer_ref->name);
 954                         if (peer_item) {
 955                                 struct object_id *old_oid = peer_item->util;
 956                                 oidcpy(&rm->peer_ref->old_oid, old_oid);
 957                         }
 958                 }
 959         }
 960
 961         if (tags == TAGS_DEFAULT && autotags)
 962                 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
 963         if (prune) {
 964                 /*
 965                  * We only prune based on refspecs specified
 966                  * explicitly (via command line or configuration); we
 967                  * don't care whether --tags was specified.
 968                  */
 969                 if (ref_count) {
 970                         prune_refs(refs, ref_count, ref_map, transport->url);
 971                 } else {
 972                         prune_refs(transport->remote->fetch,
 973                                    transport->remote->fetch_refspec_nr,
 974                                    ref_map,
 975                                    transport->url);
 976                 }
 977         }
 978         if (fetch_refs(transport, ref_map)) {
 979                 free_refs(ref_map);
 980                 retcode = 1;
 981                 goto cleanup;
 982         }
 983         free_refs(ref_map);
 984
 985         /* if neither --no-tags nor --tags was specified, do automated tag
 986          * following ... */
 987         if (tags == TAGS_DEFAULT && autotags) {
 988                 struct ref **tail = &ref_map;
 989                 ref_map = NULL;
 990                 find_non_local_tags(transport, &ref_map, &tail);
 991                 if (ref_map)
 992                         backfill_tags(transport, ref_map);
 993                 free_refs(ref_map);
 994         }
 995
 996  cleanup:
 997         string_list_clear(&existing_refs, 1);
 998         return retcode;
 999 }
1000
1001 static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1002 {
1003         struct string_list *list = priv;
1004         if (!remote->skip_default_update)
1005                 string_list_append(list, remote->name);
1006         return 0;
1007 }
1008
1009 struct remote_group_data {
1010         const char *name;
1011         struct string_list *list;
1012 };
1013
1014 static int get_remote_group(const char *key, const char *value, void *priv)
1015 {
1016         struct remote_group_data *g = priv;
1017
1018         if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1019                 /* split list by white space */
1020                 while (*value) {
1021                         size_t wordlen = strcspn(value, " \t\n");
1022
1023                         if (wordlen >= 1)
1024                                 string_list_append(g->list,
1025                                                    xstrndup(value, wordlen));
1026                         value += wordlen + (value[wordlen] != '\0');
1027                 }
1028         }
1029
1030         return 0;
1031 }
1032
1033 static int add_remote_or_group(const char *name, struct string_list *list)
1034 {
1035         int prev_nr = list->nr;
1036         struct remote_group_data g;
1037         g.name = name; g.list = list;
1038
1039         git_config(get_remote_group, &g);
1040         if (list->nr == prev_nr) {
1041                 struct remote *remote;
1042                 if (!remote_is_configured(name))
1043                         return 0;
1044                 remote = remote_get(name);
1045                 string_list_append(list, remote->name);
1046         }
1047         return 1;
1048 }
1049
1050 static void add_options_to_argv(struct argv_array *argv)
1051 {
1052         if (dry_run)
1053                 argv_array_push(argv, "--dry-run");
1054         if (prune != -1)
1055                 argv_array_push(argv, prune ? "--prune" : "--no-prune");
1056         if (update_head_ok)
1057                 argv_array_push(argv, "--update-head-ok");
1058         if (force)
1059                 argv_array_push(argv, "--force");
1060         if (keep)
1061                 argv_array_push(argv, "--keep");
1062         if (recurse_submodules == RECURSE_SUBMODULES_ON)
1063                 argv_array_push(argv, "--recurse-submodules");
1064         else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1065                 argv_array_push(argv, "--recurse-submodules=on-demand");
1066         if (tags == TAGS_SET)
1067                 argv_array_push(argv, "--tags");
1068         else if (tags == TAGS_UNSET)
1069                 argv_array_push(argv, "--no-tags");
1070         if (verbosity >= 2)
1071                 argv_array_push(argv, "-v");
1072         if (verbosity >= 1)
1073                 argv_array_push(argv, "-v");
1074         else if (verbosity < 0)
1075                 argv_array_push(argv, "-q");
1076
1077 }
1078
1079 static int fetch_multiple(struct string_list *list)
1080 {
1081         int i, result = 0;
1082         struct argv_array argv = ARGV_ARRAY_INIT;
1083
1084         if (!append && !dry_run) {
1085                 int errcode = truncate_fetch_head();
1086                 if (errcode)
1087                         return errcode;
1088         }
1089
1090         argv_array_pushl(&argv, "fetch", "--append", NULL);
1091         add_options_to_argv(&argv);
1092
1093         for (i = 0; i < list->nr; i++) {
1094                 const char *name = list->items[i].string;
1095                 argv_array_push(&argv, name);
1096                 if (verbosity >= 0)
1097                         printf(_("Fetching %s\n"), name);
1098                 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
1099                         error(_("Could not fetch %s"), name);
1100                         result = 1;
1101                 }
1102                 argv_array_pop(&argv);
1103         }
1104
1105         argv_array_clear(&argv);
1106         return result;
1107 }
1108
1109 static int fetch_one(struct remote *remote, int argc, const char **argv)
1110 {
1111         static const char **refs = NULL;
1112         struct refspec *refspec;
1113         int ref_nr = 0;
1114         int exit_code;
1115
1116         if (!remote)
1117                 die(_("No remote repository specified.  Please, specify either a URL or a\n"
1118                     "remote name from which new revisions should be fetched."));
1119
1120         gtransport = prepare_transport(remote, 1);
1121
1122         if (prune < 0) {
1123                 /* no command line request */
1124                 if (0 <= gtransport->remote->prune)
1125                         prune = gtransport->remote->prune;
1126                 else if (0 <= fetch_prune_config)
1127                         prune = fetch_prune_config;
1128                 else
1129                         prune = PRUNE_BY_DEFAULT;
1130         }
1131
1132         if (argc > 0) {
1133                 int j = 0;
1134                 int i;
1135                 refs = xcalloc(argc + 1, sizeof(const char *));
1136                 for (i = 0; i < argc; i++) {
1137                         if (!strcmp(argv[i], "tag")) {
1138                                 i++;
1139                                 if (i >= argc)
1140                                         die(_("You need to specify a tag name."));
1141                                 refs[j++] = xstrfmt("refs/tags/%s:refs/tags/%s",
1142                                                     argv[i], argv[i]);
1143                         } else
1144                                 refs[j++] = argv[i];
1145                 }
1146                 refs[j] = NULL;
1147                 ref_nr = j;
1148         }
1149
1150         sigchain_push_common(unlock_pack_on_signal);
1151         atexit(unlock_pack);
1152         refspec = parse_fetch_refspec(ref_nr, refs);
1153         exit_code = do_fetch(gtransport, refspec, ref_nr);
1154         free_refspec(ref_nr, refspec);
1155         transport_disconnect(gtransport);
1156         gtransport = NULL;
1157         return exit_code;
1158 }
1159
1160 int cmd_fetch(int argc, const char **argv, const char *prefix)
1161 {
1162         int i;
1163         struct string_list list = STRING_LIST_INIT_NODUP;
1164         struct remote *remote;
1165         int result = 0;
1166         struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
1167
1168         packet_trace_identity("fetch");
1169
1170         /* Record the command line for the reflog */
1171         strbuf_addstr(&default_rla, "fetch");
1172         for (i = 1; i < argc; i++)
1173                 strbuf_addf(&default_rla, " %s", argv[i]);
1174
1175         git_config(git_fetch_config, NULL);
1176
1177         argc = parse_options(argc, argv, prefix,
1178                              builtin_fetch_options, builtin_fetch_usage, 0);
1179
1180         if (unshallow) {
1181                 if (depth)
1182                         die(_("--depth and --unshallow cannot be used together"));
1183                 else if (!is_repository_shallow())
1184                         die(_("--unshallow on a complete repository does not make sense"));
1185                 else
1186                         depth = xstrfmt("%d", INFINITE_DEPTH);
1187         }
1188
1189         /* no need to be strict, transport_set_option() will validate it again */
1190         if (depth && atoi(depth) < 1)
1191                 die(_("depth %s is not a positive number"), depth);
1192         if (depth || deepen_since || deepen_not.nr)
1193                 deepen = 1;
1194
1195         if (recurse_submodules != RECURSE_SUBMODULES_OFF) {
1196                 if (recurse_submodules_default) {
1197                         int arg = parse_fetch_recurse_submodules_arg("--recurse-submodules-default", recurse_submodules_default);
1198                         set_config_fetch_recurse_submodules(arg);
1199                 }
1200                 gitmodules_config();
1201                 git_config(submodule_config, NULL);
1202         }
1203
1204         if (all) {
1205                 if (argc == 1)
1206                         die(_("fetch --all does not take a repository argument"));
1207                 else if (argc > 1)
1208                         die(_("fetch --all does not make sense with refspecs"));
1209                 (void) for_each_remote(get_one_remote_for_fetch, &list);
1210                 result = fetch_multiple(&list);
1211         } else if (argc == 0) {
1212                 /* No arguments -- use default remote */
1213                 remote = remote_get(NULL);
1214                 result = fetch_one(remote, argc, argv);
1215         } else if (multiple) {
1216                 /* All arguments are assumed to be remotes or groups */
1217                 for (i = 0; i < argc; i++)
1218                         if (!add_remote_or_group(argv[i], &list))
1219                                 die(_("No such remote or remote group: %s"), argv[i]);
1220                 result = fetch_multiple(&list);
1221         } else {
1222                 /* Single remote or group */
1223                 (void) add_remote_or_group(argv[0], &list);
1224                 if (list.nr > 1) {
1225                         /* More than one remote */
1226                         if (argc > 1)
1227                                 die(_("Fetching a group and specifying refspecs does not make sense"));
1228                         result = fetch_multiple(&list);
1229                 } else {
1230                         /* Zero or one remotes */
1231                         remote = remote_get(argv[0]);
1232                         result = fetch_one(remote, argc-1, argv+1);
1233                 }
1234         }
1235
1236         if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1237                 struct argv_array options = ARGV_ARRAY_INIT;
1238
1239                 add_options_to_argv(&options);
1240                 result = fetch_populated_submodules(&options,
1241                                                     submodule_prefix,
1242                                                     recurse_submodules,
1243                                                     verbosity < 0,
1244                                                     max_children);
1245                 argv_array_clear(&options);
1246         }
1247
1248         /* All names were strdup()ed or strndup()ed */
1249         list.strdup_strings = 1;
1250         string_list_clear(&list, 0);
1251
1252         close_all_packs();
1253
1254         argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
1255         if (verbosity < 0)
1256                 argv_array_push(&argv_gc_auto, "--quiet");
1257         run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1258         argv_array_clear(&argv_gc_auto);
1259
1260         return result;
1261 }