fetch-pack: support negotiation tip whitelist
[git/raj.git] / builtin / fetch.c
blob49ab6ac0643b9ceff51e8eca806612f310f79c5c
1 /*
2 * "git fetch"
3 */
4 #include "cache.h"
5 #include "config.h"
6 #include "repository.h"
7 #include "refs.h"
8 #include "refspec.h"
9 #include "commit.h"
10 #include "builtin.h"
11 #include "string-list.h"
12 #include "remote.h"
13 #include "transport.h"
14 #include "run-command.h"
15 #include "parse-options.h"
16 #include "sigchain.h"
17 #include "submodule-config.h"
18 #include "submodule.h"
19 #include "connected.h"
20 #include "argv-array.h"
21 #include "utf8.h"
22 #include "packfile.h"
23 #include "list-objects-filter-options.h"
25 static const char * const builtin_fetch_usage[] = {
26 N_("git fetch [<options>] [<repository> [<refspec>...]]"),
27 N_("git fetch [<options>] <group>"),
28 N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
29 N_("git fetch --all [<options>]"),
30 NULL
33 enum {
34 TAGS_UNSET = 0,
35 TAGS_DEFAULT = 1,
36 TAGS_SET = 2
39 static int fetch_prune_config = -1; /* unspecified */
40 static int prune = -1; /* unspecified */
41 #define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
43 static int fetch_prune_tags_config = -1; /* unspecified */
44 static int prune_tags = -1; /* unspecified */
45 #define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
47 static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity, deepen_relative;
48 static int progress = -1;
49 static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
50 static int max_children = 1;
51 static enum transport_family family;
52 static const char *depth;
53 static const char *deepen_since;
54 static const char *upload_pack;
55 static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
56 static struct strbuf default_rla = STRBUF_INIT;
57 static struct transport *gtransport;
58 static struct transport *gsecondary;
59 static const char *submodule_prefix = "";
60 static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
61 static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
62 static int shown_url = 0;
63 static struct refspec refmap = REFSPEC_INIT_FETCH;
64 static struct list_objects_filter_options filter_options;
65 static struct string_list server_options = STRING_LIST_INIT_DUP;
66 static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
68 static int git_fetch_config(const char *k, const char *v, void *cb)
70 if (!strcmp(k, "fetch.prune")) {
71 fetch_prune_config = git_config_bool(k, v);
72 return 0;
75 if (!strcmp(k, "fetch.prunetags")) {
76 fetch_prune_tags_config = git_config_bool(k, v);
77 return 0;
80 if (!strcmp(k, "submodule.recurse")) {
81 int r = git_config_bool(k, v) ?
82 RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
83 recurse_submodules = r;
86 if (!strcmp(k, "submodule.fetchjobs")) {
87 max_children = parse_submodule_fetchjobs(k, v);
88 return 0;
89 } else if (!strcmp(k, "fetch.recursesubmodules")) {
90 recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
91 return 0;
94 return git_default_config(k, v, cb);
97 static int gitmodules_fetch_config(const char *var, const char *value, void *cb)
99 if (!strcmp(var, "submodule.fetchjobs")) {
100 max_children = parse_submodule_fetchjobs(var, value);
101 return 0;
102 } else if (!strcmp(var, "fetch.recursesubmodules")) {
103 recurse_submodules = parse_fetch_recurse_submodules_arg(var, value);
104 return 0;
107 return 0;
110 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
113 * "git fetch --refmap='' origin foo"
114 * can be used to tell the command not to store anywhere
116 refspec_append(&refmap, arg);
118 return 0;
121 static struct option builtin_fetch_options[] = {
122 OPT__VERBOSITY(&verbosity),
123 OPT_BOOL(0, "all", &all,
124 N_("fetch from all remotes")),
125 OPT_BOOL('a', "append", &append,
126 N_("append to .git/FETCH_HEAD instead of overwriting")),
127 OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
128 N_("path to upload pack on remote end")),
129 OPT__FORCE(&force, N_("force overwrite of local branch"), 0),
130 OPT_BOOL('m', "multiple", &multiple,
131 N_("fetch from multiple remotes")),
132 OPT_SET_INT('t', "tags", &tags,
133 N_("fetch all tags and associated objects"), TAGS_SET),
134 OPT_SET_INT('n', NULL, &tags,
135 N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
136 OPT_INTEGER('j', "jobs", &max_children,
137 N_("number of submodules fetched in parallel")),
138 OPT_BOOL('p', "prune", &prune,
139 N_("prune remote-tracking branches no longer on remote")),
140 OPT_BOOL('P', "prune-tags", &prune_tags,
141 N_("prune local tags no longer on remote and clobber changed tags")),
142 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
143 N_("control recursive fetching of submodules"),
144 PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
145 OPT_BOOL(0, "dry-run", &dry_run,
146 N_("dry run")),
147 OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
148 OPT_BOOL('u', "update-head-ok", &update_head_ok,
149 N_("allow updating of HEAD ref")),
150 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
151 OPT_STRING(0, "depth", &depth, N_("depth"),
152 N_("deepen history of shallow clone")),
153 OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
154 N_("deepen history of shallow repository based on time")),
155 OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
156 N_("deepen history of shallow clone, excluding rev")),
157 OPT_INTEGER(0, "deepen", &deepen_relative,
158 N_("deepen history of shallow clone")),
159 OPT_SET_INT_F(0, "unshallow", &unshallow,
160 N_("convert to a complete repository"),
161 1, PARSE_OPT_NONEG),
162 { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
163 N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
164 { OPTION_CALLBACK, 0, "recurse-submodules-default",
165 &recurse_submodules_default, N_("on-demand"),
166 N_("default for recursive fetching of submodules "
167 "(lower priority than config files)"),
168 PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules },
169 OPT_BOOL(0, "update-shallow", &update_shallow,
170 N_("accept refs that update .git/shallow")),
171 { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
172 N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
173 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
174 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
175 TRANSPORT_FAMILY_IPV4),
176 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
177 TRANSPORT_FAMILY_IPV6),
178 OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
179 N_("report that we have only objects reachable from this object")),
180 OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
181 OPT_END()
184 static void unlock_pack(void)
186 if (gtransport)
187 transport_unlock_pack(gtransport);
188 if (gsecondary)
189 transport_unlock_pack(gsecondary);
192 static void unlock_pack_on_signal(int signo)
194 unlock_pack();
195 sigchain_pop(signo);
196 raise(signo);
199 static void add_merge_config(struct ref **head,
200 const struct ref *remote_refs,
201 struct branch *branch,
202 struct ref ***tail)
204 int i;
206 for (i = 0; i < branch->merge_nr; i++) {
207 struct ref *rm, **old_tail = *tail;
208 struct refspec_item refspec;
210 for (rm = *head; rm; rm = rm->next) {
211 if (branch_merge_matches(branch, i, rm->name)) {
212 rm->fetch_head_status = FETCH_HEAD_MERGE;
213 break;
216 if (rm)
217 continue;
220 * Not fetched to a remote-tracking branch? We need to fetch
221 * it anyway to allow this branch's "branch.$name.merge"
222 * to be honored by 'git pull', but we do not have to
223 * fail if branch.$name.merge is misconfigured to point
224 * at a nonexisting branch. If we were indeed called by
225 * 'git pull', it will notice the misconfiguration because
226 * there is no entry in the resulting FETCH_HEAD marked
227 * for merging.
229 memset(&refspec, 0, sizeof(refspec));
230 refspec.src = branch->merge[i]->src;
231 get_fetch_map(remote_refs, &refspec, tail, 1);
232 for (rm = *old_tail; rm; rm = rm->next)
233 rm->fetch_head_status = FETCH_HEAD_MERGE;
237 static int add_existing(const char *refname, const struct object_id *oid,
238 int flag, void *cbdata)
240 struct string_list *list = (struct string_list *)cbdata;
241 struct string_list_item *item = string_list_insert(list, refname);
242 struct object_id *old_oid = xmalloc(sizeof(*old_oid));
244 oidcpy(old_oid, oid);
245 item->util = old_oid;
246 return 0;
249 static int will_fetch(struct ref **head, const unsigned char *sha1)
251 struct ref *rm = *head;
252 while (rm) {
253 if (!hashcmp(rm->old_oid.hash, sha1))
254 return 1;
255 rm = rm->next;
257 return 0;
260 static void find_non_local_tags(struct transport *transport,
261 struct ref **head,
262 struct ref ***tail)
264 struct string_list existing_refs = STRING_LIST_INIT_DUP;
265 struct string_list remote_refs = STRING_LIST_INIT_NODUP;
266 const struct ref *ref;
267 struct string_list_item *item = NULL;
269 for_each_ref(add_existing, &existing_refs);
270 for (ref = transport_get_remote_refs(transport, NULL); ref; ref = ref->next) {
271 if (!starts_with(ref->name, "refs/tags/"))
272 continue;
275 * The peeled ref always follows the matching base
276 * ref, so if we see a peeled ref that we don't want
277 * to fetch then we can mark the ref entry in the list
278 * as one to ignore by setting util to NULL.
280 if (ends_with(ref->name, "^{}")) {
281 if (item &&
282 !has_object_file_with_flags(&ref->old_oid,
283 OBJECT_INFO_QUICK) &&
284 !will_fetch(head, ref->old_oid.hash) &&
285 !has_sha1_file_with_flags(item->util,
286 OBJECT_INFO_QUICK) &&
287 !will_fetch(head, item->util))
288 item->util = NULL;
289 item = NULL;
290 continue;
294 * If item is non-NULL here, then we previously saw a
295 * ref not followed by a peeled reference, so we need
296 * to check if it is a lightweight tag that we want to
297 * fetch.
299 if (item &&
300 !has_sha1_file_with_flags(item->util, OBJECT_INFO_QUICK) &&
301 !will_fetch(head, item->util))
302 item->util = NULL;
304 item = NULL;
306 /* skip duplicates and refs that we already have */
307 if (string_list_has_string(&remote_refs, ref->name) ||
308 string_list_has_string(&existing_refs, ref->name))
309 continue;
311 item = string_list_insert(&remote_refs, ref->name);
312 item->util = (void *)&ref->old_oid;
314 string_list_clear(&existing_refs, 1);
317 * We may have a final lightweight tag that needs to be
318 * checked to see if it needs fetching.
320 if (item &&
321 !has_sha1_file_with_flags(item->util, OBJECT_INFO_QUICK) &&
322 !will_fetch(head, item->util))
323 item->util = NULL;
326 * For all the tags in the remote_refs string list,
327 * add them to the list of refs to be fetched
329 for_each_string_list_item(item, &remote_refs) {
330 /* Unless we have already decided to ignore this item... */
331 if (item->util)
333 struct ref *rm = alloc_ref(item->string);
334 rm->peer_ref = alloc_ref(item->string);
335 oidcpy(&rm->old_oid, item->util);
336 **tail = rm;
337 *tail = &rm->next;
341 string_list_clear(&remote_refs, 0);
344 static struct ref *get_ref_map(struct transport *transport,
345 struct refspec *rs,
346 int tags, int *autotags)
348 int i;
349 struct ref *rm;
350 struct ref *ref_map = NULL;
351 struct ref **tail = &ref_map;
352 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
354 /* opportunistically-updated references: */
355 struct ref *orefs = NULL, **oref_tail = &orefs;
357 const struct ref *remote_refs;
359 if (rs->nr)
360 refspec_ref_prefixes(rs, &ref_prefixes);
361 else if (transport->remote && transport->remote->fetch.nr)
362 refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
364 if (ref_prefixes.argc &&
365 (tags == TAGS_SET || (tags == TAGS_DEFAULT && !rs->nr))) {
366 argv_array_push(&ref_prefixes, "refs/tags/");
369 remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
371 argv_array_clear(&ref_prefixes);
373 if (rs->nr) {
374 struct refspec *fetch_refspec;
376 for (i = 0; i < rs->nr; i++) {
377 get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
378 if (rs->items[i].dst && rs->items[i].dst[0])
379 *autotags = 1;
381 /* Merge everything on the command line (but not --tags) */
382 for (rm = ref_map; rm; rm = rm->next)
383 rm->fetch_head_status = FETCH_HEAD_MERGE;
386 * For any refs that we happen to be fetching via
387 * command-line arguments, the destination ref might
388 * have been missing or have been different than the
389 * remote-tracking ref that would be derived from the
390 * configured refspec. In these cases, we want to
391 * take the opportunity to update their configured
392 * remote-tracking reference. However, we do not want
393 * to mention these entries in FETCH_HEAD at all, as
394 * they would simply be duplicates of existing
395 * entries, so we set them FETCH_HEAD_IGNORE below.
397 * We compute these entries now, based only on the
398 * refspecs specified on the command line. But we add
399 * them to the list following the refspecs resulting
400 * from the tags option so that one of the latter,
401 * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
402 * by ref_remove_duplicates() in favor of one of these
403 * opportunistic entries with FETCH_HEAD_IGNORE.
405 if (refmap.nr)
406 fetch_refspec = &refmap;
407 else
408 fetch_refspec = &transport->remote->fetch;
410 for (i = 0; i < fetch_refspec->nr; i++)
411 get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
412 } else if (refmap.nr) {
413 die("--refmap option is only meaningful with command-line refspec(s).");
414 } else {
415 /* Use the defaults */
416 struct remote *remote = transport->remote;
417 struct branch *branch = branch_get(NULL);
418 int has_merge = branch_has_merge_config(branch);
419 if (remote &&
420 (remote->fetch.nr ||
421 /* Note: has_merge implies non-NULL branch->remote_name */
422 (has_merge && !strcmp(branch->remote_name, remote->name)))) {
423 for (i = 0; i < remote->fetch.nr; i++) {
424 get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
425 if (remote->fetch.items[i].dst &&
426 remote->fetch.items[i].dst[0])
427 *autotags = 1;
428 if (!i && !has_merge && ref_map &&
429 !remote->fetch.items[0].pattern)
430 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
433 * if the remote we're fetching from is the same
434 * as given in branch.<name>.remote, we add the
435 * ref given in branch.<name>.merge, too.
437 * Note: has_merge implies non-NULL branch->remote_name
439 if (has_merge &&
440 !strcmp(branch->remote_name, remote->name))
441 add_merge_config(&ref_map, remote_refs, branch, &tail);
442 } else {
443 ref_map = get_remote_ref(remote_refs, "HEAD");
444 if (!ref_map)
445 die(_("Couldn't find remote ref HEAD"));
446 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
447 tail = &ref_map->next;
451 if (tags == TAGS_SET)
452 /* also fetch all tags */
453 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
454 else if (tags == TAGS_DEFAULT && *autotags)
455 find_non_local_tags(transport, &ref_map, &tail);
457 /* Now append any refs to be updated opportunistically: */
458 *tail = orefs;
459 for (rm = orefs; rm; rm = rm->next) {
460 rm->fetch_head_status = FETCH_HEAD_IGNORE;
461 tail = &rm->next;
464 return ref_remove_duplicates(ref_map);
467 #define STORE_REF_ERROR_OTHER 1
468 #define STORE_REF_ERROR_DF_CONFLICT 2
470 static int s_update_ref(const char *action,
471 struct ref *ref,
472 int check_old)
474 char *msg;
475 char *rla = getenv("GIT_REFLOG_ACTION");
476 struct ref_transaction *transaction;
477 struct strbuf err = STRBUF_INIT;
478 int ret, df_conflict = 0;
480 if (dry_run)
481 return 0;
482 if (!rla)
483 rla = default_rla.buf;
484 msg = xstrfmt("%s: %s", rla, action);
486 transaction = ref_transaction_begin(&err);
487 if (!transaction ||
488 ref_transaction_update(transaction, ref->name,
489 &ref->new_oid,
490 check_old ? &ref->old_oid : NULL,
491 0, msg, &err))
492 goto fail;
494 ret = ref_transaction_commit(transaction, &err);
495 if (ret) {
496 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
497 goto fail;
500 ref_transaction_free(transaction);
501 strbuf_release(&err);
502 free(msg);
503 return 0;
504 fail:
505 ref_transaction_free(transaction);
506 error("%s", err.buf);
507 strbuf_release(&err);
508 free(msg);
509 return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
510 : STORE_REF_ERROR_OTHER;
513 static int refcol_width = 10;
514 static int compact_format;
516 static void adjust_refcol_width(const struct ref *ref)
518 int max, rlen, llen, len;
520 /* uptodate lines are only shown on high verbosity level */
521 if (!verbosity && !oidcmp(&ref->peer_ref->old_oid, &ref->old_oid))
522 return;
524 max = term_columns();
525 rlen = utf8_strwidth(prettify_refname(ref->name));
527 llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
530 * rough estimation to see if the output line is too long and
531 * should not be counted (we can't do precise calculation
532 * anyway because we don't know if the error explanation part
533 * will be printed in update_local_ref)
535 if (compact_format) {
536 llen = 0;
537 max = max * 2 / 3;
539 len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
540 if (len >= max)
541 return;
544 * Not precise calculation for compact mode because '*' can
545 * appear on the left hand side of '->' and shrink the column
546 * back.
548 if (refcol_width < rlen)
549 refcol_width = rlen;
552 static void prepare_format_display(struct ref *ref_map)
554 struct ref *rm;
555 const char *format = "full";
557 git_config_get_string_const("fetch.output", &format);
558 if (!strcasecmp(format, "full"))
559 compact_format = 0;
560 else if (!strcasecmp(format, "compact"))
561 compact_format = 1;
562 else
563 die(_("configuration fetch.output contains invalid value %s"),
564 format);
566 for (rm = ref_map; rm; rm = rm->next) {
567 if (rm->status == REF_STATUS_REJECT_SHALLOW ||
568 !rm->peer_ref ||
569 !strcmp(rm->name, "HEAD"))
570 continue;
572 adjust_refcol_width(rm);
576 static void print_remote_to_local(struct strbuf *display,
577 const char *remote, const char *local)
579 strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
582 static int find_and_replace(struct strbuf *haystack,
583 const char *needle,
584 const char *placeholder)
586 const char *p = strstr(haystack->buf, needle);
587 int plen, nlen;
589 if (!p)
590 return 0;
592 if (p > haystack->buf && p[-1] != '/')
593 return 0;
595 plen = strlen(p);
596 nlen = strlen(needle);
597 if (plen > nlen && p[nlen] != '/')
598 return 0;
600 strbuf_splice(haystack, p - haystack->buf, nlen,
601 placeholder, strlen(placeholder));
602 return 1;
605 static void print_compact(struct strbuf *display,
606 const char *remote, const char *local)
608 struct strbuf r = STRBUF_INIT;
609 struct strbuf l = STRBUF_INIT;
611 if (!strcmp(remote, local)) {
612 strbuf_addf(display, "%-*s -> *", refcol_width, remote);
613 return;
616 strbuf_addstr(&r, remote);
617 strbuf_addstr(&l, local);
619 if (!find_and_replace(&r, local, "*"))
620 find_and_replace(&l, remote, "*");
621 print_remote_to_local(display, r.buf, l.buf);
623 strbuf_release(&r);
624 strbuf_release(&l);
627 static void format_display(struct strbuf *display, char code,
628 const char *summary, const char *error,
629 const char *remote, const char *local,
630 int summary_width)
632 int width = (summary_width + strlen(summary) - gettext_width(summary));
634 strbuf_addf(display, "%c %-*s ", code, width, summary);
635 if (!compact_format)
636 print_remote_to_local(display, remote, local);
637 else
638 print_compact(display, remote, local);
639 if (error)
640 strbuf_addf(display, " (%s)", error);
643 static int update_local_ref(struct ref *ref,
644 const char *remote,
645 const struct ref *remote_ref,
646 struct strbuf *display,
647 int summary_width)
649 struct commit *current = NULL, *updated;
650 enum object_type type;
651 struct branch *current_branch = branch_get(NULL);
652 const char *pretty_ref = prettify_refname(ref->name);
654 type = oid_object_info(the_repository, &ref->new_oid, NULL);
655 if (type < 0)
656 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
658 if (!oidcmp(&ref->old_oid, &ref->new_oid)) {
659 if (verbosity > 0)
660 format_display(display, '=', _("[up to date]"), NULL,
661 remote, pretty_ref, summary_width);
662 return 0;
665 if (current_branch &&
666 !strcmp(ref->name, current_branch->name) &&
667 !(update_head_ok || is_bare_repository()) &&
668 !is_null_oid(&ref->old_oid)) {
670 * If this is the head, and it's not okay to update
671 * the head, and the old value of the head isn't empty...
673 format_display(display, '!', _("[rejected]"),
674 _("can't fetch in current branch"),
675 remote, pretty_ref, summary_width);
676 return 1;
679 if (!is_null_oid(&ref->old_oid) &&
680 starts_with(ref->name, "refs/tags/")) {
681 int r;
682 r = s_update_ref("updating tag", ref, 0);
683 format_display(display, r ? '!' : 't', _("[tag update]"),
684 r ? _("unable to update local ref") : NULL,
685 remote, pretty_ref, summary_width);
686 return r;
689 current = lookup_commit_reference_gently(&ref->old_oid, 1);
690 updated = lookup_commit_reference_gently(&ref->new_oid, 1);
691 if (!current || !updated) {
692 const char *msg;
693 const char *what;
694 int r;
696 * Nicely describe the new ref we're fetching.
697 * Base this on the remote's ref name, as it's
698 * more likely to follow a standard layout.
700 const char *name = remote_ref ? remote_ref->name : "";
701 if (starts_with(name, "refs/tags/")) {
702 msg = "storing tag";
703 what = _("[new tag]");
704 } else if (starts_with(name, "refs/heads/")) {
705 msg = "storing head";
706 what = _("[new branch]");
707 } else {
708 msg = "storing ref";
709 what = _("[new ref]");
712 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
713 (recurse_submodules != RECURSE_SUBMODULES_ON))
714 check_for_new_submodule_commits(&ref->new_oid);
715 r = s_update_ref(msg, ref, 0);
716 format_display(display, r ? '!' : '*', what,
717 r ? _("unable to update local ref") : NULL,
718 remote, pretty_ref, summary_width);
719 return r;
722 if (in_merge_bases(current, updated)) {
723 struct strbuf quickref = STRBUF_INIT;
724 int r;
725 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
726 strbuf_addstr(&quickref, "..");
727 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
728 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
729 (recurse_submodules != RECURSE_SUBMODULES_ON))
730 check_for_new_submodule_commits(&ref->new_oid);
731 r = s_update_ref("fast-forward", ref, 1);
732 format_display(display, r ? '!' : ' ', quickref.buf,
733 r ? _("unable to update local ref") : NULL,
734 remote, pretty_ref, summary_width);
735 strbuf_release(&quickref);
736 return r;
737 } else if (force || ref->force) {
738 struct strbuf quickref = STRBUF_INIT;
739 int r;
740 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
741 strbuf_addstr(&quickref, "...");
742 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
743 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
744 (recurse_submodules != RECURSE_SUBMODULES_ON))
745 check_for_new_submodule_commits(&ref->new_oid);
746 r = s_update_ref("forced-update", ref, 1);
747 format_display(display, r ? '!' : '+', quickref.buf,
748 r ? _("unable to update local ref") : _("forced update"),
749 remote, pretty_ref, summary_width);
750 strbuf_release(&quickref);
751 return r;
752 } else {
753 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
754 remote, pretty_ref, summary_width);
755 return 1;
759 static int iterate_ref_map(void *cb_data, struct object_id *oid)
761 struct ref **rm = cb_data;
762 struct ref *ref = *rm;
764 while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
765 ref = ref->next;
766 if (!ref)
767 return -1; /* end of the list */
768 *rm = ref->next;
769 oidcpy(oid, &ref->old_oid);
770 return 0;
773 static int store_updated_refs(const char *raw_url, const char *remote_name,
774 struct ref *ref_map)
776 FILE *fp;
777 struct commit *commit;
778 int url_len, i, rc = 0;
779 struct strbuf note = STRBUF_INIT;
780 const char *what, *kind;
781 struct ref *rm;
782 char *url;
783 const char *filename = dry_run ? "/dev/null" : git_path_fetch_head();
784 int want_status;
785 int summary_width = transport_summary_width(ref_map);
787 fp = fopen(filename, "a");
788 if (!fp)
789 return error_errno(_("cannot open %s"), filename);
791 if (raw_url)
792 url = transport_anonymize_url(raw_url);
793 else
794 url = xstrdup("foreign");
796 rm = ref_map;
797 if (check_connected(iterate_ref_map, &rm, NULL)) {
798 rc = error(_("%s did not send all necessary objects\n"), url);
799 goto abort;
802 prepare_format_display(ref_map);
805 * We do a pass for each fetch_head_status type in their enum order, so
806 * merged entries are written before not-for-merge. That lets readers
807 * use FETCH_HEAD as a refname to refer to the ref to be merged.
809 for (want_status = FETCH_HEAD_MERGE;
810 want_status <= FETCH_HEAD_IGNORE;
811 want_status++) {
812 for (rm = ref_map; rm; rm = rm->next) {
813 struct ref *ref = NULL;
814 const char *merge_status_marker = "";
816 if (rm->status == REF_STATUS_REJECT_SHALLOW) {
817 if (want_status == FETCH_HEAD_MERGE)
818 warning(_("reject %s because shallow roots are not allowed to be updated"),
819 rm->peer_ref ? rm->peer_ref->name : rm->name);
820 continue;
823 commit = lookup_commit_reference_gently(&rm->old_oid,
825 if (!commit)
826 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
828 if (rm->fetch_head_status != want_status)
829 continue;
831 if (rm->peer_ref) {
832 ref = alloc_ref(rm->peer_ref->name);
833 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
834 oidcpy(&ref->new_oid, &rm->old_oid);
835 ref->force = rm->peer_ref->force;
839 if (!strcmp(rm->name, "HEAD")) {
840 kind = "";
841 what = "";
843 else if (starts_with(rm->name, "refs/heads/")) {
844 kind = "branch";
845 what = rm->name + 11;
847 else if (starts_with(rm->name, "refs/tags/")) {
848 kind = "tag";
849 what = rm->name + 10;
851 else if (starts_with(rm->name, "refs/remotes/")) {
852 kind = "remote-tracking branch";
853 what = rm->name + 13;
855 else {
856 kind = "";
857 what = rm->name;
860 url_len = strlen(url);
861 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
863 url_len = i + 1;
864 if (4 < i && !strncmp(".git", url + i - 3, 4))
865 url_len = i - 3;
867 strbuf_reset(&note);
868 if (*what) {
869 if (*kind)
870 strbuf_addf(&note, "%s ", kind);
871 strbuf_addf(&note, "'%s' of ", what);
873 switch (rm->fetch_head_status) {
874 case FETCH_HEAD_NOT_FOR_MERGE:
875 merge_status_marker = "not-for-merge";
876 /* fall-through */
877 case FETCH_HEAD_MERGE:
878 fprintf(fp, "%s\t%s\t%s",
879 oid_to_hex(&rm->old_oid),
880 merge_status_marker,
881 note.buf);
882 for (i = 0; i < url_len; ++i)
883 if ('\n' == url[i])
884 fputs("\\n", fp);
885 else
886 fputc(url[i], fp);
887 fputc('\n', fp);
888 break;
889 default:
890 /* do not write anything to FETCH_HEAD */
891 break;
894 strbuf_reset(&note);
895 if (ref) {
896 rc |= update_local_ref(ref, what, rm, &note,
897 summary_width);
898 free(ref);
899 } else
900 format_display(&note, '*',
901 *kind ? kind : "branch", NULL,
902 *what ? what : "HEAD",
903 "FETCH_HEAD", summary_width);
904 if (note.len) {
905 if (verbosity >= 0 && !shown_url) {
906 fprintf(stderr, _("From %.*s\n"),
907 url_len, url);
908 shown_url = 1;
910 if (verbosity >= 0)
911 fprintf(stderr, " %s\n", note.buf);
916 if (rc & STORE_REF_ERROR_DF_CONFLICT)
917 error(_("some local refs could not be updated; try running\n"
918 " 'git remote prune %s' to remove any old, conflicting "
919 "branches"), remote_name);
921 abort:
922 strbuf_release(&note);
923 free(url);
924 fclose(fp);
925 return rc;
929 * We would want to bypass the object transfer altogether if
930 * everything we are going to fetch already exists and is connected
931 * locally.
933 static int quickfetch(struct ref *ref_map)
935 struct ref *rm = ref_map;
936 struct check_connected_options opt = CHECK_CONNECTED_INIT;
939 * If we are deepening a shallow clone we already have these
940 * objects reachable. Running rev-list here will return with
941 * a good (0) exit status and we'll bypass the fetch that we
942 * really need to perform. Claiming failure now will ensure
943 * we perform the network exchange to deepen our history.
945 if (deepen)
946 return -1;
947 opt.quiet = 1;
948 return check_connected(iterate_ref_map, &rm, &opt);
951 static int fetch_refs(struct transport *transport, struct ref *ref_map)
953 int ret = quickfetch(ref_map);
954 if (ret)
955 ret = transport_fetch_refs(transport, ref_map);
956 if (!ret)
957 ret |= store_updated_refs(transport->url,
958 transport->remote->name,
959 ref_map);
960 transport_unlock_pack(transport);
961 return ret;
964 static int prune_refs(struct refspec *rs, struct ref *ref_map,
965 const char *raw_url)
967 int url_len, i, result = 0;
968 struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
969 char *url;
970 int summary_width = transport_summary_width(stale_refs);
971 const char *dangling_msg = dry_run
972 ? _(" (%s will become dangling)")
973 : _(" (%s has become dangling)");
975 if (raw_url)
976 url = transport_anonymize_url(raw_url);
977 else
978 url = xstrdup("foreign");
980 url_len = strlen(url);
981 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
984 url_len = i + 1;
985 if (4 < i && !strncmp(".git", url + i - 3, 4))
986 url_len = i - 3;
988 if (!dry_run) {
989 struct string_list refnames = STRING_LIST_INIT_NODUP;
991 for (ref = stale_refs; ref; ref = ref->next)
992 string_list_append(&refnames, ref->name);
994 result = delete_refs("fetch: prune", &refnames, 0);
995 string_list_clear(&refnames, 0);
998 if (verbosity >= 0) {
999 for (ref = stale_refs; ref; ref = ref->next) {
1000 struct strbuf sb = STRBUF_INIT;
1001 if (!shown_url) {
1002 fprintf(stderr, _("From %.*s\n"), url_len, url);
1003 shown_url = 1;
1005 format_display(&sb, '-', _("[deleted]"), NULL,
1006 _("(none)"), prettify_refname(ref->name),
1007 summary_width);
1008 fprintf(stderr, " %s\n",sb.buf);
1009 strbuf_release(&sb);
1010 warn_dangling_symref(stderr, dangling_msg, ref->name);
1014 free(url);
1015 free_refs(stale_refs);
1016 return result;
1019 static void check_not_current_branch(struct ref *ref_map)
1021 struct branch *current_branch = branch_get(NULL);
1023 if (is_bare_repository() || !current_branch)
1024 return;
1026 for (; ref_map; ref_map = ref_map->next)
1027 if (ref_map->peer_ref && !strcmp(current_branch->refname,
1028 ref_map->peer_ref->name))
1029 die(_("Refusing to fetch into current branch %s "
1030 "of non-bare repository"), current_branch->refname);
1033 static int truncate_fetch_head(void)
1035 const char *filename = git_path_fetch_head();
1036 FILE *fp = fopen_for_writing(filename);
1038 if (!fp)
1039 return error_errno(_("cannot open %s"), filename);
1040 fclose(fp);
1041 return 0;
1044 static void set_option(struct transport *transport, const char *name, const char *value)
1046 int r = transport_set_option(transport, name, value);
1047 if (r < 0)
1048 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
1049 name, value, transport->url);
1050 if (r > 0)
1051 warning(_("Option \"%s\" is ignored for %s\n"),
1052 name, transport->url);
1056 static int add_oid(const char *refname, const struct object_id *oid, int flags,
1057 void *cb_data)
1059 struct oid_array *oids = cb_data;
1061 oid_array_append(oids, oid);
1062 return 0;
1065 static void add_negotiation_tips(struct git_transport_options *smart_options)
1067 struct oid_array *oids = xcalloc(1, sizeof(*oids));
1068 int i;
1070 for (i = 0; i < negotiation_tip.nr; i++) {
1071 const char *s = negotiation_tip.items[i].string;
1072 int old_nr;
1073 if (!has_glob_specials(s)) {
1074 struct object_id oid;
1075 if (get_oid(s, &oid))
1076 die("%s is not a valid object", s);
1077 oid_array_append(oids, &oid);
1078 continue;
1080 old_nr = oids->nr;
1081 for_each_glob_ref(add_oid, s, oids);
1082 if (old_nr == oids->nr)
1083 warning("Ignoring --negotiation-tip=%s because it does not match any refs",
1086 smart_options->negotiation_tips = oids;
1089 static struct transport *prepare_transport(struct remote *remote, int deepen)
1091 struct transport *transport;
1092 transport = transport_get(remote, NULL);
1093 transport_set_verbosity(transport, verbosity, progress);
1094 transport->family = family;
1095 if (upload_pack)
1096 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
1097 if (keep)
1098 set_option(transport, TRANS_OPT_KEEP, "yes");
1099 if (depth)
1100 set_option(transport, TRANS_OPT_DEPTH, depth);
1101 if (deepen && deepen_since)
1102 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
1103 if (deepen && deepen_not.nr)
1104 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1105 (const char *)&deepen_not);
1106 if (deepen_relative)
1107 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
1108 if (update_shallow)
1109 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
1110 if (filter_options.choice) {
1111 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
1112 filter_options.filter_spec);
1113 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1115 if (negotiation_tip.nr) {
1116 if (transport->smart_options)
1117 add_negotiation_tips(transport->smart_options);
1118 else
1119 warning("Ignoring --negotiation-tip because the protocol does not support it.");
1121 return transport;
1124 static void backfill_tags(struct transport *transport, struct ref *ref_map)
1126 int cannot_reuse;
1129 * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
1130 * when remote helper is used (setting it to an empty string
1131 * is not unsetting). We could extend the remote helper
1132 * protocol for that, but for now, just force a new connection
1133 * without deepen-since. Similar story for deepen-not.
1135 cannot_reuse = transport->cannot_reuse ||
1136 deepen_since || deepen_not.nr;
1137 if (cannot_reuse) {
1138 gsecondary = prepare_transport(transport->remote, 0);
1139 transport = gsecondary;
1142 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1143 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
1144 transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
1145 fetch_refs(transport, ref_map);
1147 if (gsecondary) {
1148 transport_disconnect(gsecondary);
1149 gsecondary = NULL;
1153 static int do_fetch(struct transport *transport,
1154 struct refspec *rs)
1156 struct string_list existing_refs = STRING_LIST_INIT_DUP;
1157 struct ref *ref_map;
1158 struct ref *rm;
1159 int autotags = (transport->remote->fetch_tags == 1);
1160 int retcode = 0;
1162 for_each_ref(add_existing, &existing_refs);
1164 if (tags == TAGS_DEFAULT) {
1165 if (transport->remote->fetch_tags == 2)
1166 tags = TAGS_SET;
1167 if (transport->remote->fetch_tags == -1)
1168 tags = TAGS_UNSET;
1171 /* if not appending, truncate FETCH_HEAD */
1172 if (!append && !dry_run) {
1173 retcode = truncate_fetch_head();
1174 if (retcode)
1175 goto cleanup;
1178 ref_map = get_ref_map(transport, rs, tags, &autotags);
1179 if (!update_head_ok)
1180 check_not_current_branch(ref_map);
1182 for (rm = ref_map; rm; rm = rm->next) {
1183 if (rm->peer_ref) {
1184 struct string_list_item *peer_item =
1185 string_list_lookup(&existing_refs,
1186 rm->peer_ref->name);
1187 if (peer_item) {
1188 struct object_id *old_oid = peer_item->util;
1189 oidcpy(&rm->peer_ref->old_oid, old_oid);
1194 if (tags == TAGS_DEFAULT && autotags)
1195 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1196 if (prune) {
1198 * We only prune based on refspecs specified
1199 * explicitly (via command line or configuration); we
1200 * don't care whether --tags was specified.
1202 if (rs->nr) {
1203 prune_refs(rs, ref_map, transport->url);
1204 } else {
1205 prune_refs(&transport->remote->fetch,
1206 ref_map,
1207 transport->url);
1210 if (fetch_refs(transport, ref_map)) {
1211 free_refs(ref_map);
1212 retcode = 1;
1213 goto cleanup;
1215 free_refs(ref_map);
1217 /* if neither --no-tags nor --tags was specified, do automated tag
1218 * following ... */
1219 if (tags == TAGS_DEFAULT && autotags) {
1220 struct ref **tail = &ref_map;
1221 ref_map = NULL;
1222 find_non_local_tags(transport, &ref_map, &tail);
1223 if (ref_map)
1224 backfill_tags(transport, ref_map);
1225 free_refs(ref_map);
1228 cleanup:
1229 string_list_clear(&existing_refs, 1);
1230 return retcode;
1233 static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1235 struct string_list *list = priv;
1236 if (!remote->skip_default_update)
1237 string_list_append(list, remote->name);
1238 return 0;
1241 struct remote_group_data {
1242 const char *name;
1243 struct string_list *list;
1246 static int get_remote_group(const char *key, const char *value, void *priv)
1248 struct remote_group_data *g = priv;
1250 if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1251 /* split list by white space */
1252 while (*value) {
1253 size_t wordlen = strcspn(value, " \t\n");
1255 if (wordlen >= 1)
1256 string_list_append_nodup(g->list,
1257 xstrndup(value, wordlen));
1258 value += wordlen + (value[wordlen] != '\0');
1262 return 0;
1265 static int add_remote_or_group(const char *name, struct string_list *list)
1267 int prev_nr = list->nr;
1268 struct remote_group_data g;
1269 g.name = name; g.list = list;
1271 git_config(get_remote_group, &g);
1272 if (list->nr == prev_nr) {
1273 struct remote *remote = remote_get(name);
1274 if (!remote_is_configured(remote, 0))
1275 return 0;
1276 string_list_append(list, remote->name);
1278 return 1;
1281 static void add_options_to_argv(struct argv_array *argv)
1283 if (dry_run)
1284 argv_array_push(argv, "--dry-run");
1285 if (prune != -1)
1286 argv_array_push(argv, prune ? "--prune" : "--no-prune");
1287 if (prune_tags != -1)
1288 argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
1289 if (update_head_ok)
1290 argv_array_push(argv, "--update-head-ok");
1291 if (force)
1292 argv_array_push(argv, "--force");
1293 if (keep)
1294 argv_array_push(argv, "--keep");
1295 if (recurse_submodules == RECURSE_SUBMODULES_ON)
1296 argv_array_push(argv, "--recurse-submodules");
1297 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1298 argv_array_push(argv, "--recurse-submodules=on-demand");
1299 if (tags == TAGS_SET)
1300 argv_array_push(argv, "--tags");
1301 else if (tags == TAGS_UNSET)
1302 argv_array_push(argv, "--no-tags");
1303 if (verbosity >= 2)
1304 argv_array_push(argv, "-v");
1305 if (verbosity >= 1)
1306 argv_array_push(argv, "-v");
1307 else if (verbosity < 0)
1308 argv_array_push(argv, "-q");
1312 static int fetch_multiple(struct string_list *list)
1314 int i, result = 0;
1315 struct argv_array argv = ARGV_ARRAY_INIT;
1317 if (!append && !dry_run) {
1318 int errcode = truncate_fetch_head();
1319 if (errcode)
1320 return errcode;
1323 argv_array_pushl(&argv, "fetch", "--append", NULL);
1324 add_options_to_argv(&argv);
1326 for (i = 0; i < list->nr; i++) {
1327 const char *name = list->items[i].string;
1328 argv_array_push(&argv, name);
1329 if (verbosity >= 0)
1330 printf(_("Fetching %s\n"), name);
1331 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
1332 error(_("Could not fetch %s"), name);
1333 result = 1;
1335 argv_array_pop(&argv);
1338 argv_array_clear(&argv);
1339 return result;
1343 * Fetching from the promisor remote should use the given filter-spec
1344 * or inherit the default filter-spec from the config.
1346 static inline void fetch_one_setup_partial(struct remote *remote)
1349 * Explicit --no-filter argument overrides everything, regardless
1350 * of any prior partial clones and fetches.
1352 if (filter_options.no_filter)
1353 return;
1356 * If no prior partial clone/fetch and the current fetch DID NOT
1357 * request a partial-fetch, do a normal fetch.
1359 if (!repository_format_partial_clone && !filter_options.choice)
1360 return;
1363 * If this is the FIRST partial-fetch request, we enable partial
1364 * on this repo and remember the given filter-spec as the default
1365 * for subsequent fetches to this remote.
1367 if (!repository_format_partial_clone && filter_options.choice) {
1368 partial_clone_register(remote->name, &filter_options);
1369 return;
1373 * We are currently limited to only ONE promisor remote and only
1374 * allow partial-fetches from the promisor remote.
1376 if (strcmp(remote->name, repository_format_partial_clone)) {
1377 if (filter_options.choice)
1378 die(_("--filter can only be used with the remote configured in core.partialClone"));
1379 return;
1383 * Do a partial-fetch from the promisor remote using either the
1384 * explicitly given filter-spec or inherit the filter-spec from
1385 * the config.
1387 if (!filter_options.choice)
1388 partial_clone_get_default_filter_spec(&filter_options);
1389 return;
1392 static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
1394 struct refspec rs = REFSPEC_INIT_FETCH;
1395 int i;
1396 int exit_code;
1397 int maybe_prune_tags;
1398 int remote_via_config = remote_is_configured(remote, 0);
1400 if (!remote)
1401 die(_("No remote repository specified. Please, specify either a URL or a\n"
1402 "remote name from which new revisions should be fetched."));
1404 gtransport = prepare_transport(remote, 1);
1406 if (prune < 0) {
1407 /* no command line request */
1408 if (0 <= remote->prune)
1409 prune = remote->prune;
1410 else if (0 <= fetch_prune_config)
1411 prune = fetch_prune_config;
1412 else
1413 prune = PRUNE_BY_DEFAULT;
1416 if (prune_tags < 0) {
1417 /* no command line request */
1418 if (0 <= remote->prune_tags)
1419 prune_tags = remote->prune_tags;
1420 else if (0 <= fetch_prune_tags_config)
1421 prune_tags = fetch_prune_tags_config;
1422 else
1423 prune_tags = PRUNE_TAGS_BY_DEFAULT;
1426 maybe_prune_tags = prune_tags_ok && prune_tags;
1427 if (maybe_prune_tags && remote_via_config)
1428 refspec_append(&remote->fetch, TAG_REFSPEC);
1430 if (maybe_prune_tags && (argc || !remote_via_config))
1431 refspec_append(&rs, TAG_REFSPEC);
1433 for (i = 0; i < argc; i++) {
1434 if (!strcmp(argv[i], "tag")) {
1435 char *tag;
1436 i++;
1437 if (i >= argc)
1438 die(_("You need to specify a tag name."));
1440 tag = xstrfmt("refs/tags/%s:refs/tags/%s",
1441 argv[i], argv[i]);
1442 refspec_append(&rs, tag);
1443 free(tag);
1444 } else {
1445 refspec_append(&rs, argv[i]);
1449 if (server_options.nr)
1450 gtransport->server_options = &server_options;
1452 sigchain_push_common(unlock_pack_on_signal);
1453 atexit(unlock_pack);
1454 exit_code = do_fetch(gtransport, &rs);
1455 refspec_clear(&rs);
1456 transport_disconnect(gtransport);
1457 gtransport = NULL;
1458 return exit_code;
1461 int cmd_fetch(int argc, const char **argv, const char *prefix)
1463 int i;
1464 struct string_list list = STRING_LIST_INIT_DUP;
1465 struct remote *remote = NULL;
1466 int result = 0;
1467 int prune_tags_ok = 1;
1468 struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
1470 packet_trace_identity("fetch");
1472 fetch_if_missing = 0;
1474 /* Record the command line for the reflog */
1475 strbuf_addstr(&default_rla, "fetch");
1476 for (i = 1; i < argc; i++)
1477 strbuf_addf(&default_rla, " %s", argv[i]);
1479 config_from_gitmodules(gitmodules_fetch_config, NULL);
1480 git_config(git_fetch_config, NULL);
1482 argc = parse_options(argc, argv, prefix,
1483 builtin_fetch_options, builtin_fetch_usage, 0);
1485 if (deepen_relative) {
1486 if (deepen_relative < 0)
1487 die(_("Negative depth in --deepen is not supported"));
1488 if (depth)
1489 die(_("--deepen and --depth are mutually exclusive"));
1490 depth = xstrfmt("%d", deepen_relative);
1492 if (unshallow) {
1493 if (depth)
1494 die(_("--depth and --unshallow cannot be used together"));
1495 else if (!is_repository_shallow())
1496 die(_("--unshallow on a complete repository does not make sense"));
1497 else
1498 depth = xstrfmt("%d", INFINITE_DEPTH);
1501 /* no need to be strict, transport_set_option() will validate it again */
1502 if (depth && atoi(depth) < 1)
1503 die(_("depth %s is not a positive number"), depth);
1504 if (depth || deepen_since || deepen_not.nr)
1505 deepen = 1;
1507 if (filter_options.choice && !repository_format_partial_clone)
1508 die("--filter can only be used when extensions.partialClone is set");
1510 if (all) {
1511 if (argc == 1)
1512 die(_("fetch --all does not take a repository argument"));
1513 else if (argc > 1)
1514 die(_("fetch --all does not make sense with refspecs"));
1515 (void) for_each_remote(get_one_remote_for_fetch, &list);
1516 } else if (argc == 0) {
1517 /* No arguments -- use default remote */
1518 remote = remote_get(NULL);
1519 } else if (multiple) {
1520 /* All arguments are assumed to be remotes or groups */
1521 for (i = 0; i < argc; i++)
1522 if (!add_remote_or_group(argv[i], &list))
1523 die(_("No such remote or remote group: %s"), argv[i]);
1524 } else {
1525 /* Single remote or group */
1526 (void) add_remote_or_group(argv[0], &list);
1527 if (list.nr > 1) {
1528 /* More than one remote */
1529 if (argc > 1)
1530 die(_("Fetching a group and specifying refspecs does not make sense"));
1531 } else {
1532 /* Zero or one remotes */
1533 remote = remote_get(argv[0]);
1534 prune_tags_ok = (argc == 1);
1535 argc--;
1536 argv++;
1540 if (remote) {
1541 if (filter_options.choice || repository_format_partial_clone)
1542 fetch_one_setup_partial(remote);
1543 result = fetch_one(remote, argc, argv, prune_tags_ok);
1544 } else {
1545 if (filter_options.choice)
1546 die(_("--filter can only be used with the remote configured in core.partialClone"));
1547 /* TODO should this also die if we have a previous partial-clone? */
1548 result = fetch_multiple(&list);
1551 if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1552 struct argv_array options = ARGV_ARRAY_INIT;
1554 add_options_to_argv(&options);
1555 result = fetch_populated_submodules(the_repository,
1556 &options,
1557 submodule_prefix,
1558 recurse_submodules,
1559 recurse_submodules_default,
1560 verbosity < 0,
1561 max_children);
1562 argv_array_clear(&options);
1565 string_list_clear(&list, 0);
1567 close_all_packs(the_repository->objects);
1569 argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
1570 if (verbosity < 0)
1571 argv_array_push(&argv_gc_auto, "--quiet");
1572 run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1573 argv_array_clear(&argv_gc_auto);
1575 return result;