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 "object-store.h"
10#include "commit.h"
11#include "builtin.h"
12#include "string-list.h"
13#include "remote.h"
14#include "transport.h"
15#include "run-command.h"
16#include "parse-options.h"
17#include "sigchain.h"
18#include "submodule-config.h"
19#include "submodule.h"
20#include "connected.h"
21#include "argv-array.h"
22#include "utf8.h"
23#include "packfile.h"
24#include "list-objects-filter-options.h"
25#include "commit-reach.h"
26static const char * const builtin_fetch_usage[] = {
28 N_("git fetch [<options>] [<repository> [<refspec>...]]"),
29 N_("git fetch [<options>] <group>"),
30 N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
31 N_("git fetch --all [<options>]"),
32 NULL
33};
34enum {
36 TAGS_UNSET = 0,
37 TAGS_DEFAULT = 1,
38 TAGS_SET = 2
39};
40static int fetch_prune_config = -1; /* unspecified */
42static int prune = -1; /* unspecified */
43#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
44static int fetch_prune_tags_config = -1; /* unspecified */
46static int prune_tags = -1; /* unspecified */
47#define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
48static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity, deepen_relative;
50static int progress = -1;
51static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
52static int max_children = 1;
53static enum transport_family family;
54static const char *depth;
55static const char *deepen_since;
56static const char *upload_pack;
57static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
58static struct strbuf default_rla = STRBUF_INIT;
59static struct transport *gtransport;
60static struct transport *gsecondary;
61static const char *submodule_prefix = "";
62static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
63static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
64static int shown_url = 0;
65static struct refspec refmap = REFSPEC_INIT_FETCH;
66static struct list_objects_filter_options filter_options;
67static struct string_list server_options = STRING_LIST_INIT_DUP;
68static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
69static int git_fetch_config(const char *k, const char *v, void *cb)
71{
72 if (!strcmp(k, "fetch.prune")) {
73 fetch_prune_config = git_config_bool(k, v);
74 return 0;
75 }
76 if (!strcmp(k, "fetch.prunetags")) {
78 fetch_prune_tags_config = git_config_bool(k, v);
79 return 0;
80 }
81 if (!strcmp(k, "submodule.recurse")) {
83 int r = git_config_bool(k, v) ?
84 RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
85 recurse_submodules = r;
86 }
87 if (!strcmp(k, "submodule.fetchjobs")) {
89 max_children = parse_submodule_fetchjobs(k, v);
90 return 0;
91 } else if (!strcmp(k, "fetch.recursesubmodules")) {
92 recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
93 return 0;
94 }
95 return git_default_config(k, v, cb);
97}
98static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
100{
101 /*
102 * "git fetch --refmap='' origin foo"
103 * can be used to tell the command not to store anywhere
104 */
105 refspec_append(&refmap, arg);
106 return 0;
108}
109static struct option builtin_fetch_options[] = {
111 OPT__VERBOSITY(&verbosity),
112 OPT_BOOL(0, "all", &all,
113 N_("fetch from all remotes")),
114 OPT_BOOL('a', "append", &append,
115 N_("append to .git/FETCH_HEAD instead of overwriting")),
116 OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
117 N_("path to upload pack on remote end")),
118 OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
119 OPT_BOOL('m', "multiple", &multiple,
120 N_("fetch from multiple remotes")),
121 OPT_SET_INT('t', "tags", &tags,
122 N_("fetch all tags and associated objects"), TAGS_SET),
123 OPT_SET_INT('n', NULL, &tags,
124 N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
125 OPT_INTEGER('j', "jobs", &max_children,
126 N_("number of submodules fetched in parallel")),
127 OPT_BOOL('p', "prune", &prune,
128 N_("prune remote-tracking branches no longer on remote")),
129 OPT_BOOL('P', "prune-tags", &prune_tags,
130 N_("prune local tags no longer on remote and clobber changed tags")),
131 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
132 N_("control recursive fetching of submodules"),
133 PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
134 OPT_BOOL(0, "dry-run", &dry_run,
135 N_("dry run")),
136 OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
137 OPT_BOOL('u', "update-head-ok", &update_head_ok,
138 N_("allow updating of HEAD ref")),
139 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
140 OPT_STRING(0, "depth", &depth, N_("depth"),
141 N_("deepen history of shallow clone")),
142 OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
143 N_("deepen history of shallow repository based on time")),
144 OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
145 N_("deepen history of shallow clone, excluding rev")),
146 OPT_INTEGER(0, "deepen", &deepen_relative,
147 N_("deepen history of shallow clone")),
148 OPT_SET_INT_F(0, "unshallow", &unshallow,
149 N_("convert to a complete repository"),
150 1, PARSE_OPT_NONEG),
151 { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
152 N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
153 { OPTION_CALLBACK, 0, "recurse-submodules-default",
154 &recurse_submodules_default, N_("on-demand"),
155 N_("default for recursive fetching of submodules "
156 "(lower priority than config files)"),
157 PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules },
158 OPT_BOOL(0, "update-shallow", &update_shallow,
159 N_("accept refs that update .git/shallow")),
160 { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
161 N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
162 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
163 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
164 TRANSPORT_FAMILY_IPV4),
165 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
166 TRANSPORT_FAMILY_IPV6),
167 OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
168 N_("report that we have only objects reachable from this object")),
169 OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
170 OPT_END()
171};
172static void unlock_pack(void)
174{
175 if (gtransport)
176 transport_unlock_pack(gtransport);
177 if (gsecondary)
178 transport_unlock_pack(gsecondary);
179}
180static void unlock_pack_on_signal(int signo)
182{
183 unlock_pack();
184 sigchain_pop(signo);
185 raise(signo);
186}
187static void add_merge_config(struct ref **head,
189 const struct ref *remote_refs,
190 struct branch *branch,
191 struct ref ***tail)
192{
193 int i;
194 for (i = 0; i < branch->merge_nr; i++) {
196 struct ref *rm, **old_tail = *tail;
197 struct refspec_item refspec;
198 for (rm = *head; rm; rm = rm->next) {
200 if (branch_merge_matches(branch, i, rm->name)) {
201 rm->fetch_head_status = FETCH_HEAD_MERGE;
202 break;
203 }
204 }
205 if (rm)
206 continue;
207 /*
209 * Not fetched to a remote-tracking branch? We need to fetch
210 * it anyway to allow this branch's "branch.$name.merge"
211 * to be honored by 'git pull', but we do not have to
212 * fail if branch.$name.merge is misconfigured to point
213 * at a nonexisting branch. If we were indeed called by
214 * 'git pull', it will notice the misconfiguration because
215 * there is no entry in the resulting FETCH_HEAD marked
216 * for merging.
217 */
218 memset(&refspec, 0, sizeof(refspec));
219 refspec.src = branch->merge[i]->src;
220 get_fetch_map(remote_refs, &refspec, tail, 1);
221 for (rm = *old_tail; rm; rm = rm->next)
222 rm->fetch_head_status = FETCH_HEAD_MERGE;
223 }
224}
225static int add_existing(const char *refname, const struct object_id *oid,
227 int flag, void *cbdata)
228{
229 struct string_list *list = (struct string_list *)cbdata;
230 struct string_list_item *item = string_list_insert(list, refname);
231 struct object_id *old_oid = xmalloc(sizeof(*old_oid));
232 oidcpy(old_oid, oid);
234 item->util = old_oid;
235 return 0;
236}
237static int will_fetch(struct ref **head, const unsigned char *sha1)
239{
240 struct ref *rm = *head;
241 while (rm) {
242 if (hasheq(rm->old_oid.hash, sha1))
243 return 1;
244 rm = rm->next;
245 }
246 return 0;
247}
248static void find_non_local_tags(const struct ref *refs,
250 struct ref **head,
251 struct ref ***tail)
252{
253 struct string_list existing_refs = STRING_LIST_INIT_DUP;
254 struct string_list remote_refs = STRING_LIST_INIT_NODUP;
255 const struct ref *ref;
256 struct string_list_item *item = NULL;
257 for_each_ref(add_existing, &existing_refs);
259 for (ref = refs; ref; ref = ref->next) {
260 if (!starts_with(ref->name, "refs/tags/"))
261 continue;
262 /*
264 * The peeled ref always follows the matching base
265 * ref, so if we see a peeled ref that we don't want
266 * to fetch then we can mark the ref entry in the list
267 * as one to ignore by setting util to NULL.
268 */
269 if (ends_with(ref->name, "^{}")) {
270 if (item &&
271 !has_object_file_with_flags(&ref->old_oid,
272 OBJECT_INFO_QUICK) &&
273 !will_fetch(head, ref->old_oid.hash) &&
274 !has_sha1_file_with_flags(item->util,
275 OBJECT_INFO_QUICK) &&
276 !will_fetch(head, item->util))
277 item->util = NULL;
278 item = NULL;
279 continue;
280 }
281 /*
283 * If item is non-NULL here, then we previously saw a
284 * ref not followed by a peeled reference, so we need
285 * to check if it is a lightweight tag that we want to
286 * fetch.
287 */
288 if (item &&
289 !has_sha1_file_with_flags(item->util, OBJECT_INFO_QUICK) &&
290 !will_fetch(head, item->util))
291 item->util = NULL;
292 item = NULL;
294 /* skip duplicates and refs that we already have */
296 if (string_list_has_string(&remote_refs, ref->name) ||
297 string_list_has_string(&existing_refs, ref->name))
298 continue;
299 item = string_list_insert(&remote_refs, ref->name);
301 item->util = (void *)&ref->old_oid;
302 }
303 string_list_clear(&existing_refs, 1);
304 /*
306 * We may have a final lightweight tag that needs to be
307 * checked to see if it needs fetching.
308 */
309 if (item &&
310 !has_sha1_file_with_flags(item->util, OBJECT_INFO_QUICK) &&
311 !will_fetch(head, item->util))
312 item->util = NULL;
313 /*
315 * For all the tags in the remote_refs string list,
316 * add them to the list of refs to be fetched
317 */
318 for_each_string_list_item(item, &remote_refs) {
319 /* Unless we have already decided to ignore this item... */
320 if (item->util)
321 {
322 struct ref *rm = alloc_ref(item->string);
323 rm->peer_ref = alloc_ref(item->string);
324 oidcpy(&rm->old_oid, item->util);
325 **tail = rm;
326 *tail = &rm->next;
327 }
328 }
329 string_list_clear(&remote_refs, 0);
331}
332static struct ref *get_ref_map(struct remote *remote,
334 const struct ref *remote_refs,
335 struct refspec *rs,
336 int tags, int *autotags)
337{
338 int i;
339 struct ref *rm;
340 struct ref *ref_map = NULL;
341 struct ref **tail = &ref_map;
342 /* opportunistically-updated references: */
344 struct ref *orefs = NULL, **oref_tail = &orefs;
345 struct string_list existing_refs = STRING_LIST_INIT_DUP;
347 if (rs->nr) {
349 struct refspec *fetch_refspec;
350 for (i = 0; i < rs->nr; i++) {
352 get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
353 if (rs->items[i].dst && rs->items[i].dst[0])
354 *autotags = 1;
355 }
356 /* Merge everything on the command line (but not --tags) */
357 for (rm = ref_map; rm; rm = rm->next)
358 rm->fetch_head_status = FETCH_HEAD_MERGE;
359 /*
361 * For any refs that we happen to be fetching via
362 * command-line arguments, the destination ref might
363 * have been missing or have been different than the
364 * remote-tracking ref that would be derived from the
365 * configured refspec. In these cases, we want to
366 * take the opportunity to update their configured
367 * remote-tracking reference. However, we do not want
368 * to mention these entries in FETCH_HEAD at all, as
369 * they would simply be duplicates of existing
370 * entries, so we set them FETCH_HEAD_IGNORE below.
371 *
372 * We compute these entries now, based only on the
373 * refspecs specified on the command line. But we add
374 * them to the list following the refspecs resulting
375 * from the tags option so that one of the latter,
376 * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
377 * by ref_remove_duplicates() in favor of one of these
378 * opportunistic entries with FETCH_HEAD_IGNORE.
379 */
380 if (refmap.nr)
381 fetch_refspec = &refmap;
382 else
383 fetch_refspec = &remote->fetch;
384 for (i = 0; i < fetch_refspec->nr; i++)
386 get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
387 } else if (refmap.nr) {
388 die("--refmap option is only meaningful with command-line refspec(s).");
389 } else {
390 /* Use the defaults */
391 struct branch *branch = branch_get(NULL);
392 int has_merge = branch_has_merge_config(branch);
393 if (remote &&
394 (remote->fetch.nr ||
395 /* Note: has_merge implies non-NULL branch->remote_name */
396 (has_merge && !strcmp(branch->remote_name, remote->name)))) {
397 for (i = 0; i < remote->fetch.nr; i++) {
398 get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
399 if (remote->fetch.items[i].dst &&
400 remote->fetch.items[i].dst[0])
401 *autotags = 1;
402 if (!i && !has_merge && ref_map &&
403 !remote->fetch.items[0].pattern)
404 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
405 }
406 /*
407 * if the remote we're fetching from is the same
408 * as given in branch.<name>.remote, we add the
409 * ref given in branch.<name>.merge, too.
410 *
411 * Note: has_merge implies non-NULL branch->remote_name
412 */
413 if (has_merge &&
414 !strcmp(branch->remote_name, remote->name))
415 add_merge_config(&ref_map, remote_refs, branch, &tail);
416 } else {
417 ref_map = get_remote_ref(remote_refs, "HEAD");
418 if (!ref_map)
419 die(_("Couldn't find remote ref HEAD"));
420 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
421 tail = &ref_map->next;
422 }
423 }
424 if (tags == TAGS_SET)
426 /* also fetch all tags */
427 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
428 else if (tags == TAGS_DEFAULT && *autotags)
429 find_non_local_tags(remote_refs, &ref_map, &tail);
430 /* Now append any refs to be updated opportunistically: */
432 *tail = orefs;
433 for (rm = orefs; rm; rm = rm->next) {
434 rm->fetch_head_status = FETCH_HEAD_IGNORE;
435 tail = &rm->next;
436 }
437 ref_map = ref_remove_duplicates(ref_map);
439 for_each_ref(add_existing, &existing_refs);
441 for (rm = ref_map; rm; rm = rm->next) {
442 if (rm->peer_ref) {
443 struct string_list_item *peer_item =
444 string_list_lookup(&existing_refs,
445 rm->peer_ref->name);
446 if (peer_item) {
447 struct object_id *old_oid = peer_item->util;
448 oidcpy(&rm->peer_ref->old_oid, old_oid);
449 }
450 }
451 }
452 string_list_clear(&existing_refs, 1);
453 return ref_map;
455}
456#define STORE_REF_ERROR_OTHER 1
458#define STORE_REF_ERROR_DF_CONFLICT 2
459static int s_update_ref(const char *action,
461 struct ref *ref,
462 int check_old)
463{
464 char *msg;
465 char *rla = getenv("GIT_REFLOG_ACTION");
466 struct ref_transaction *transaction;
467 struct strbuf err = STRBUF_INIT;
468 int ret, df_conflict = 0;
469 if (dry_run)
471 return 0;
472 if (!rla)
473 rla = default_rla.buf;
474 msg = xstrfmt("%s: %s", rla, action);
475 transaction = ref_transaction_begin(&err);
477 if (!transaction ||
478 ref_transaction_update(transaction, ref->name,
479 &ref->new_oid,
480 check_old ? &ref->old_oid : NULL,
481 0, msg, &err))
482 goto fail;
483 ret = ref_transaction_commit(transaction, &err);
485 if (ret) {
486 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
487 goto fail;
488 }
489 ref_transaction_free(transaction);
491 strbuf_release(&err);
492 free(msg);
493 return 0;
494fail:
495 ref_transaction_free(transaction);
496 error("%s", err.buf);
497 strbuf_release(&err);
498 free(msg);
499 return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
500 : STORE_REF_ERROR_OTHER;
501}
502static int refcol_width = 10;
504static int compact_format;
505static void adjust_refcol_width(const struct ref *ref)
507{
508 int max, rlen, llen, len;
509 /* uptodate lines are only shown on high verbosity level */
511 if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
512 return;
513 max = term_columns();
515 rlen = utf8_strwidth(prettify_refname(ref->name));
516 llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
518 /*
520 * rough estimation to see if the output line is too long and
521 * should not be counted (we can't do precise calculation
522 * anyway because we don't know if the error explanation part
523 * will be printed in update_local_ref)
524 */
525 if (compact_format) {
526 llen = 0;
527 max = max * 2 / 3;
528 }
529 len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
530 if (len >= max)
531 return;
532 /*
534 * Not precise calculation for compact mode because '*' can
535 * appear on the left hand side of '->' and shrink the column
536 * back.
537 */
538 if (refcol_width < rlen)
539 refcol_width = rlen;
540}
541static void prepare_format_display(struct ref *ref_map)
543{
544 struct ref *rm;
545 const char *format = "full";
546 git_config_get_string_const("fetch.output", &format);
548 if (!strcasecmp(format, "full"))
549 compact_format = 0;
550 else if (!strcasecmp(format, "compact"))
551 compact_format = 1;
552 else
553 die(_("configuration fetch.output contains invalid value %s"),
554 format);
555 for (rm = ref_map; rm; rm = rm->next) {
557 if (rm->status == REF_STATUS_REJECT_SHALLOW ||
558 !rm->peer_ref ||
559 !strcmp(rm->name, "HEAD"))
560 continue;
561 adjust_refcol_width(rm);
563 }
564}
565static void print_remote_to_local(struct strbuf *display,
567 const char *remote, const char *local)
568{
569 strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
570}
571static int find_and_replace(struct strbuf *haystack,
573 const char *needle,
574 const char *placeholder)
575{
576 const char *p = strstr(haystack->buf, needle);
577 int plen, nlen;
578 if (!p)
580 return 0;
581 if (p > haystack->buf && p[-1] != '/')
583 return 0;
584 plen = strlen(p);
586 nlen = strlen(needle);
587 if (plen > nlen && p[nlen] != '/')
588 return 0;
589 strbuf_splice(haystack, p - haystack->buf, nlen,
591 placeholder, strlen(placeholder));
592 return 1;
593}
594static void print_compact(struct strbuf *display,
596 const char *remote, const char *local)
597{
598 struct strbuf r = STRBUF_INIT;
599 struct strbuf l = STRBUF_INIT;
600 if (!strcmp(remote, local)) {
602 strbuf_addf(display, "%-*s -> *", refcol_width, remote);
603 return;
604 }
605 strbuf_addstr(&r, remote);
607 strbuf_addstr(&l, local);
608 if (!find_and_replace(&r, local, "*"))
610 find_and_replace(&l, remote, "*");
611 print_remote_to_local(display, r.buf, l.buf);
612 strbuf_release(&r);
614 strbuf_release(&l);
615}
616static void format_display(struct strbuf *display, char code,
618 const char *summary, const char *error,
619 const char *remote, const char *local,
620 int summary_width)
621{
622 int width = (summary_width + strlen(summary) - gettext_width(summary));
623 strbuf_addf(display, "%c %-*s ", code, width, summary);
625 if (!compact_format)
626 print_remote_to_local(display, remote, local);
627 else
628 print_compact(display, remote, local);
629 if (error)
630 strbuf_addf(display, " (%s)", error);
631}
632static int update_local_ref(struct ref *ref,
634 const char *remote,
635 const struct ref *remote_ref,
636 struct strbuf *display,
637 int summary_width)
638{
639 struct commit *current = NULL, *updated;
640 enum object_type type;
641 struct branch *current_branch = branch_get(NULL);
642 const char *pretty_ref = prettify_refname(ref->name);
643 type = oid_object_info(the_repository, &ref->new_oid, NULL);
645 if (type < 0)
646 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
647 if (oideq(&ref->old_oid, &ref->new_oid)) {
649 if (verbosity > 0)
650 format_display(display, '=', _("[up to date]"), NULL,
651 remote, pretty_ref, summary_width);
652 return 0;
653 }
654 if (current_branch &&
656 !strcmp(ref->name, current_branch->name) &&
657 !(update_head_ok || is_bare_repository()) &&
658 !is_null_oid(&ref->old_oid)) {
659 /*
660 * If this is the head, and it's not okay to update
661 * the head, and the old value of the head isn't empty...
662 */
663 format_display(display, '!', _("[rejected]"),
664 _("can't fetch in current branch"),
665 remote, pretty_ref, summary_width);
666 return 1;
667 }
668 if (!is_null_oid(&ref->old_oid) &&
670 starts_with(ref->name, "refs/tags/")) {
671 if (force || ref->force) {
672 int r;
673 r = s_update_ref("updating tag", ref, 0);
674 format_display(display, r ? '!' : 't', _("[tag update]"),
675 r ? _("unable to update local ref") : NULL,
676 remote, pretty_ref, summary_width);
677 return r;
678 } else {
679 format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
680 remote, pretty_ref, summary_width);
681 return 1;
682 }
683 }
684 current = lookup_commit_reference_gently(the_repository,
686 &ref->old_oid, 1);
687 updated = lookup_commit_reference_gently(the_repository,
688 &ref->new_oid, 1);
689 if (!current || !updated) {
690 const char *msg;
691 const char *what;
692 int r;
693 /*
694 * Nicely describe the new ref we're fetching.
695 * Base this on the remote's ref name, as it's
696 * more likely to follow a standard layout.
697 */
698 const char *name = remote_ref ? remote_ref->name : "";
699 if (starts_with(name, "refs/tags/")) {
700 msg = "storing tag";
701 what = _("[new tag]");
702 } else if (starts_with(name, "refs/heads/")) {
703 msg = "storing head";
704 what = _("[new branch]");
705 } else {
706 msg = "storing ref";
707 what = _("[new ref]");
708 }
709 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
711 (recurse_submodules != RECURSE_SUBMODULES_ON))
712 check_for_new_submodule_commits(&ref->new_oid);
713 r = s_update_ref(msg, ref, 0);
714 format_display(display, r ? '!' : '*', what,
715 r ? _("unable to update local ref") : NULL,
716 remote, pretty_ref, summary_width);
717 return r;
718 }
719 if (in_merge_bases(current, updated)) {
721 struct strbuf quickref = STRBUF_INIT;
722 int r;
723 strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
724 strbuf_addstr(&quickref, "..");
725 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
726 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
727 (recurse_submodules != RECURSE_SUBMODULES_ON))
728 check_for_new_submodule_commits(&ref->new_oid);
729 r = s_update_ref("fast-forward", ref, 1);
730 format_display(display, r ? '!' : ' ', quickref.buf,
731 r ? _("unable to update local ref") : NULL,
732 remote, pretty_ref, summary_width);
733 strbuf_release(&quickref);
734 return r;
735 } else if (force || ref->force) {
736 struct strbuf quickref = STRBUF_INIT;
737 int r;
738 strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
739 strbuf_addstr(&quickref, "...");
740 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
741 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
742 (recurse_submodules != RECURSE_SUBMODULES_ON))
743 check_for_new_submodule_commits(&ref->new_oid);
744 r = s_update_ref("forced-update", ref, 1);
745 format_display(display, r ? '!' : '+', quickref.buf,
746 r ? _("unable to update local ref") : _("forced update"),
747 remote, pretty_ref, summary_width);
748 strbuf_release(&quickref);
749 return r;
750 } else {
751 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
752 remote, pretty_ref, summary_width);
753 return 1;
754 }
755}
756static int iterate_ref_map(void *cb_data, struct object_id *oid)
758{
759 struct ref **rm = cb_data;
760 struct ref *ref = *rm;
761 while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
763 ref = ref->next;
764 if (!ref)
765 return -1; /* end of the list */
766 *rm = ref->next;
767 oidcpy(oid, &ref->old_oid);
768 return 0;
769}
770static int store_updated_refs(const char *raw_url, const char *remote_name,
772 int connectivity_checked, struct ref *ref_map)
773{
774 FILE *fp;
775 struct commit *commit;
776 int url_len, i, rc = 0;
777 struct strbuf note = STRBUF_INIT;
778 const char *what, *kind;
779 struct ref *rm;
780 char *url;
781 const char *filename = dry_run ? "/dev/null" : git_path_fetch_head(the_repository);
782 int want_status;
783 int summary_width = transport_summary_width(ref_map);
784 fp = fopen(filename, "a");
786 if (!fp)
787 return error_errno(_("cannot open %s"), filename);
788 if (raw_url)
790 url = transport_anonymize_url(raw_url);
791 else
792 url = xstrdup("foreign");
793 if (!connectivity_checked) {
795 rm = ref_map;
796 if (check_connected(iterate_ref_map, &rm, NULL)) {
797 rc = error(_("%s did not send all necessary objects\n"), url);
798 goto abort;
799 }
800 }
801 prepare_format_display(ref_map);
803 /*
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.
808 */
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 = "";
815 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;
821 }
822 commit = lookup_commit_reference_gently(the_repository,
824 &rm->old_oid,
825 1);
826 if (!commit)
827 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
828 if (rm->fetch_head_status != want_status)
830 continue;
831 if (rm->peer_ref) {
833 ref = alloc_ref(rm->peer_ref->name);
834 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
835 oidcpy(&ref->new_oid, &rm->old_oid);
836 ref->force = rm->peer_ref->force;
837 }
838 if (!strcmp(rm->name, "HEAD")) {
841 kind = "";
842 what = "";
843 }
844 else if (starts_with(rm->name, "refs/heads/")) {
845 kind = "branch";
846 what = rm->name + 11;
847 }
848 else if (starts_with(rm->name, "refs/tags/")) {
849 kind = "tag";
850 what = rm->name + 10;
851 }
852 else if (starts_with(rm->name, "refs/remotes/")) {
853 kind = "remote-tracking branch";
854 what = rm->name + 13;
855 }
856 else {
857 kind = "";
858 what = rm->name;
859 }
860 url_len = strlen(url);
862 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
863 ;
864 url_len = i + 1;
865 if (4 < i && !strncmp(".git", url + i - 3, 4))
866 url_len = i - 3;
867 strbuf_reset(¬e);
869 if (*what) {
870 if (*kind)
871 strbuf_addf(¬e, "%s ", kind);
872 strbuf_addf(¬e, "'%s' of ", what);
873 }
874 switch (rm->fetch_head_status) {
875 case FETCH_HEAD_NOT_FOR_MERGE:
876 merge_status_marker = "not-for-merge";
877 /* fall-through */
878 case FETCH_HEAD_MERGE:
879 fprintf(fp, "%s\t%s\t%s",
880 oid_to_hex(&rm->old_oid),
881 merge_status_marker,
882 note.buf);
883 for (i = 0; i < url_len; ++i)
884 if ('\n' == url[i])
885 fputs("\\n", fp);
886 else
887 fputc(url[i], fp);
888 fputc('\n', fp);
889 break;
890 default:
891 /* do not write anything to FETCH_HEAD */
892 break;
893 }
894 strbuf_reset(¬e);
896 if (ref) {
897 rc |= update_local_ref(ref, what, rm, ¬e,
898 summary_width);
899 free(ref);
900 } else
901 format_display(¬e, '*',
902 *kind ? kind : "branch", NULL,
903 *what ? what : "HEAD",
904 "FETCH_HEAD", summary_width);
905 if (note.len) {
906 if (verbosity >= 0 && !shown_url) {
907 fprintf(stderr, _("From %.*s\n"),
908 url_len, url);
909 shown_url = 1;
910 }
911 if (verbosity >= 0)
912 fprintf(stderr, " %s\n", note.buf);
913 }
914 }
915 }
916 if (rc & STORE_REF_ERROR_DF_CONFLICT)
918 error(_("some local refs could not be updated; try running\n"
919 " 'git remote prune %s' to remove any old, conflicting "
920 "branches"), remote_name);
921 abort:
923 strbuf_release(¬e);
924 free(url);
925 fclose(fp);
926 return rc;
927}
928/*
930 * We would want to bypass the object transfer altogether if
931 * everything we are going to fetch already exists and is connected
932 * locally.
933 */
934static int check_exist_and_connected(struct ref *ref_map)
935{
936 struct ref *rm = ref_map;
937 struct check_connected_options opt = CHECK_CONNECTED_INIT;
938 struct ref *r;
939 /*
941 * If we are deepening a shallow clone we already have these
942 * objects reachable. Running rev-list here will return with
943 * a good (0) exit status and we'll bypass the fetch that we
944 * really need to perform. Claiming failure now will ensure
945 * we perform the network exchange to deepen our history.
946 */
947 if (deepen)
948 return -1;
949 /*
951 * check_connected() allows objects to merely be promised, but
952 * we need all direct targets to exist.
953 */
954 for (r = rm; r; r = r->next) {
955 if (!has_object_file(&r->old_oid))
956 return -1;
957 }
958 opt.quiet = 1;
960 return check_connected(iterate_ref_map, &rm, &opt);
961}
962static int fetch_refs(struct transport *transport, struct ref *ref_map)
964{
965 int ret = check_exist_and_connected(ref_map);
966 if (ret)
967 ret = transport_fetch_refs(transport, ref_map);
968 if (!ret)
969 /*
970 * Keep the new pack's ".keep" file around to allow the caller
971 * time to update refs to reference the new objects.
972 */
973 return 0;
974 transport_unlock_pack(transport);
975 return ret;
976}
977/* Update local refs based on the ref values fetched from a remote */
979static int consume_refs(struct transport *transport, struct ref *ref_map)
980{
981 int connectivity_checked = transport->smart_options
982 ? transport->smart_options->connectivity_checked : 0;
983 int ret = store_updated_refs(transport->url,
984 transport->remote->name,
985 connectivity_checked,
986 ref_map);
987 transport_unlock_pack(transport);
988 return ret;
989}
990static int prune_refs(struct refspec *rs, struct ref *ref_map,
992 const char *raw_url)
993{
994 int url_len, i, result = 0;
995 struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
996 char *url;
997 int summary_width = transport_summary_width(stale_refs);
998 const char *dangling_msg = dry_run
999 ? _(" (%s will become dangling)")
1000 : _(" (%s has become dangling)");
1001 if (raw_url)
1003 url = transport_anonymize_url(raw_url);
1004 else
1005 url = xstrdup("foreign");
1006 url_len = strlen(url);
1008 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
1009 ;
1010 url_len = i + 1;
1012 if (4 < i && !strncmp(".git", url + i - 3, 4))
1013 url_len = i - 3;
1014 if (!dry_run) {
1016 struct string_list refnames = STRING_LIST_INIT_NODUP;
1017 for (ref = stale_refs; ref; ref = ref->next)
1019 string_list_append(&refnames, ref->name);
1020 result = delete_refs("fetch: prune", &refnames, 0);
1022 string_list_clear(&refnames, 0);
1023 }
1024 if (verbosity >= 0) {
1026 for (ref = stale_refs; ref; ref = ref->next) {
1027 struct strbuf sb = STRBUF_INIT;
1028 if (!shown_url) {
1029 fprintf(stderr, _("From %.*s\n"), url_len, url);
1030 shown_url = 1;
1031 }
1032 format_display(&sb, '-', _("[deleted]"), NULL,
1033 _("(none)"), prettify_refname(ref->name),
1034 summary_width);
1035 fprintf(stderr, " %s\n",sb.buf);
1036 strbuf_release(&sb);
1037 warn_dangling_symref(stderr, dangling_msg, ref->name);
1038 }
1039 }
1040 free(url);
1042 free_refs(stale_refs);
1043 return result;
1044}
1045static void check_not_current_branch(struct ref *ref_map)
1047{
1048 struct branch *current_branch = branch_get(NULL);
1049 if (is_bare_repository() || !current_branch)
1051 return;
1052 for (; ref_map; ref_map = ref_map->next)
1054 if (ref_map->peer_ref && !strcmp(current_branch->refname,
1055 ref_map->peer_ref->name))
1056 die(_("Refusing to fetch into current branch %s "
1057 "of non-bare repository"), current_branch->refname);
1058}
1059static int truncate_fetch_head(void)
1061{
1062 const char *filename = git_path_fetch_head(the_repository);
1063 FILE *fp = fopen_for_writing(filename);
1064 if (!fp)
1066 return error_errno(_("cannot open %s"), filename);
1067 fclose(fp);
1068 return 0;
1069}
1070static void set_option(struct transport *transport, const char *name, const char *value)
1072{
1073 int r = transport_set_option(transport, name, value);
1074 if (r < 0)
1075 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
1076 name, value, transport->url);
1077 if (r > 0)
1078 warning(_("Option \"%s\" is ignored for %s\n"),
1079 name, transport->url);
1080}
1081static int add_oid(const char *refname, const struct object_id *oid, int flags,
1084 void *cb_data)
1085{
1086 struct oid_array *oids = cb_data;
1087 oid_array_append(oids, oid);
1089 return 0;
1090}
1091static void add_negotiation_tips(struct git_transport_options *smart_options)
1093{
1094 struct oid_array *oids = xcalloc(1, sizeof(*oids));
1095 int i;
1096 for (i = 0; i < negotiation_tip.nr; i++) {
1098 const char *s = negotiation_tip.items[i].string;
1099 int old_nr;
1100 if (!has_glob_specials(s)) {
1101 struct object_id oid;
1102 if (get_oid(s, &oid))
1103 die("%s is not a valid object", s);
1104 oid_array_append(oids, &oid);
1105 continue;
1106 }
1107 old_nr = oids->nr;
1108 for_each_glob_ref(add_oid, s, oids);
1109 if (old_nr == oids->nr)
1110 warning("Ignoring --negotiation-tip=%s because it does not match any refs",
1111 s);
1112 }
1113 smart_options->negotiation_tips = oids;
1114}
1115static struct transport *prepare_transport(struct remote *remote, int deepen)
1117{
1118 struct transport *transport;
1119 transport = transport_get(remote, NULL);
1120 transport_set_verbosity(transport, verbosity, progress);
1121 transport->family = family;
1122 if (upload_pack)
1123 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
1124 if (keep)
1125 set_option(transport, TRANS_OPT_KEEP, "yes");
1126 if (depth)
1127 set_option(transport, TRANS_OPT_DEPTH, depth);
1128 if (deepen && deepen_since)
1129 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
1130 if (deepen && deepen_not.nr)
1131 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1132 (const char *)&deepen_not);
1133 if (deepen_relative)
1134 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
1135 if (update_shallow)
1136 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
1137 if (filter_options.choice) {
1138 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
1139 filter_options.filter_spec);
1140 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1141 }
1142 if (negotiation_tip.nr) {
1143 if (transport->smart_options)
1144 add_negotiation_tips(transport->smart_options);
1145 else
1146 warning("Ignoring --negotiation-tip because the protocol does not support it.");
1147 }
1148 return transport;
1149}
1150static void backfill_tags(struct transport *transport, struct ref *ref_map)
1152{
1153 int cannot_reuse;
1154 /*
1156 * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
1157 * when remote helper is used (setting it to an empty string
1158 * is not unsetting). We could extend the remote helper
1159 * protocol for that, but for now, just force a new connection
1160 * without deepen-since. Similar story for deepen-not.
1161 */
1162 cannot_reuse = transport->cannot_reuse ||
1163 deepen_since || deepen_not.nr;
1164 if (cannot_reuse) {
1165 gsecondary = prepare_transport(transport->remote, 0);
1166 transport = gsecondary;
1167 }
1168 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1170 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
1171 transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
1172 if (!fetch_refs(transport, ref_map))
1173 consume_refs(transport, ref_map);
1174 if (gsecondary) {
1176 transport_disconnect(gsecondary);
1177 gsecondary = NULL;
1178 }
1179}
1180static int do_fetch(struct transport *transport,
1182 struct refspec *rs)
1183{
1184 struct ref *ref_map;
1185 int autotags = (transport->remote->fetch_tags == 1);
1186 int retcode = 0;
1187 const struct ref *remote_refs;
1188 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
1189 int must_list_refs = 1;
1190 if (tags == TAGS_DEFAULT) {
1192 if (transport->remote->fetch_tags == 2)
1193 tags = TAGS_SET;
1194 if (transport->remote->fetch_tags == -1)
1195 tags = TAGS_UNSET;
1196 }
1197 /* if not appending, truncate FETCH_HEAD */
1199 if (!append && !dry_run) {
1200 retcode = truncate_fetch_head();
1201 if (retcode)
1202 goto cleanup;
1203 }
1204 if (rs->nr) {
1206 int i;
1207 refspec_ref_prefixes(rs, &ref_prefixes);
1209 /*
1211 * We can avoid listing refs if all of them are exact
1212 * OIDs
1213 */
1214 must_list_refs = 0;
1215 for (i = 0; i < rs->nr; i++) {
1216 if (!rs->items[i].exact_sha1) {
1217 must_list_refs = 1;
1218 break;
1219 }
1220 }
1221 } else if (transport->remote && transport->remote->fetch.nr)
1222 refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
1223 if (tags == TAGS_SET || tags == TAGS_DEFAULT) {
1225 must_list_refs = 1;
1226 if (ref_prefixes.argc)
1227 argv_array_push(&ref_prefixes, "refs/tags/");
1228 }
1229 if (must_list_refs)
1231 remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
1232 else
1233 remote_refs = NULL;
1234 argv_array_clear(&ref_prefixes);
1236 ref_map = get_ref_map(transport->remote, remote_refs, rs,
1238 tags, &autotags);
1239 if (!update_head_ok)
1240 check_not_current_branch(ref_map);
1241 if (tags == TAGS_DEFAULT && autotags)
1243 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1244 if (prune) {
1245 /*
1246 * We only prune based on refspecs specified
1247 * explicitly (via command line or configuration); we
1248 * don't care whether --tags was specified.
1249 */
1250 if (rs->nr) {
1251 prune_refs(rs, ref_map, transport->url);
1252 } else {
1253 prune_refs(&transport->remote->fetch,
1254 ref_map,
1255 transport->url);
1256 }
1257 }
1258 if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) {
1259 free_refs(ref_map);
1260 retcode = 1;
1261 goto cleanup;
1262 }
1263 free_refs(ref_map);
1264 /* if neither --no-tags nor --tags was specified, do automated tag
1266 * following ... */
1267 if (tags == TAGS_DEFAULT && autotags) {
1268 struct ref **tail = &ref_map;
1269 ref_map = NULL;
1270 find_non_local_tags(remote_refs, &ref_map, &tail);
1271 if (ref_map)
1272 backfill_tags(transport, ref_map);
1273 free_refs(ref_map);
1274 }
1275 cleanup:
1277 return retcode;
1278}
1279static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1281{
1282 struct string_list *list = priv;
1283 if (!remote->skip_default_update)
1284 string_list_append(list, remote->name);
1285 return 0;
1286}
1287struct remote_group_data {
1289 const char *name;
1290 struct string_list *list;
1291};
1292static int get_remote_group(const char *key, const char *value, void *priv)
1294{
1295 struct remote_group_data *g = priv;
1296 if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1298 /* split list by white space */
1299 while (*value) {
1300 size_t wordlen = strcspn(value, " \t\n");
1301 if (wordlen >= 1)
1303 string_list_append_nodup(g->list,
1304 xstrndup(value, wordlen));
1305 value += wordlen + (value[wordlen] != '\0');
1306 }
1307 }
1308 return 0;
1310}
1311static int add_remote_or_group(const char *name, struct string_list *list)
1313{
1314 int prev_nr = list->nr;
1315 struct remote_group_data g;
1316 g.name = name; g.list = list;
1317 git_config(get_remote_group, &g);
1319 if (list->nr == prev_nr) {
1320 struct remote *remote = remote_get(name);
1321 if (!remote_is_configured(remote, 0))
1322 return 0;
1323 string_list_append(list, remote->name);
1324 }
1325 return 1;
1326}
1327static void add_options_to_argv(struct argv_array *argv)
1329{
1330 if (dry_run)
1331 argv_array_push(argv, "--dry-run");
1332 if (prune != -1)
1333 argv_array_push(argv, prune ? "--prune" : "--no-prune");
1334 if (prune_tags != -1)
1335 argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
1336 if (update_head_ok)
1337 argv_array_push(argv, "--update-head-ok");
1338 if (force)
1339 argv_array_push(argv, "--force");
1340 if (keep)
1341 argv_array_push(argv, "--keep");
1342 if (recurse_submodules == RECURSE_SUBMODULES_ON)
1343 argv_array_push(argv, "--recurse-submodules");
1344 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1345 argv_array_push(argv, "--recurse-submodules=on-demand");
1346 if (tags == TAGS_SET)
1347 argv_array_push(argv, "--tags");
1348 else if (tags == TAGS_UNSET)
1349 argv_array_push(argv, "--no-tags");
1350 if (verbosity >= 2)
1351 argv_array_push(argv, "-v");
1352 if (verbosity >= 1)
1353 argv_array_push(argv, "-v");
1354 else if (verbosity < 0)
1355 argv_array_push(argv, "-q");
1356}
1358static int fetch_multiple(struct string_list *list)
1360{
1361 int i, result = 0;
1362 struct argv_array argv = ARGV_ARRAY_INIT;
1363 if (!append && !dry_run) {
1365 int errcode = truncate_fetch_head();
1366 if (errcode)
1367 return errcode;
1368 }
1369 argv_array_pushl(&argv, "fetch", "--append", NULL);
1371 add_options_to_argv(&argv);
1372 for (i = 0; i < list->nr; i++) {
1374 const char *name = list->items[i].string;
1375 argv_array_push(&argv, name);
1376 if (verbosity >= 0)
1377 printf(_("Fetching %s\n"), name);
1378 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
1379 error(_("Could not fetch %s"), name);
1380 result = 1;
1381 }
1382 argv_array_pop(&argv);
1383 }
1384 argv_array_clear(&argv);
1386 return result;
1387}
1388/*
1390 * Fetching from the promisor remote should use the given filter-spec
1391 * or inherit the default filter-spec from the config.
1392 */
1393static inline void fetch_one_setup_partial(struct remote *remote)
1394{
1395 /*
1396 * Explicit --no-filter argument overrides everything, regardless
1397 * of any prior partial clones and fetches.
1398 */
1399 if (filter_options.no_filter)
1400 return;
1401 /*
1403 * If no prior partial clone/fetch and the current fetch DID NOT
1404 * request a partial-fetch, do a normal fetch.
1405 */
1406 if (!repository_format_partial_clone && !filter_options.choice)
1407 return;
1408 /*
1410 * If this is the FIRST partial-fetch request, we enable partial
1411 * on this repo and remember the given filter-spec as the default
1412 * for subsequent fetches to this remote.
1413 */
1414 if (!repository_format_partial_clone && filter_options.choice) {
1415 partial_clone_register(remote->name, &filter_options);
1416 return;
1417 }
1418 /*
1420 * We are currently limited to only ONE promisor remote and only
1421 * allow partial-fetches from the promisor remote.
1422 */
1423 if (strcmp(remote->name, repository_format_partial_clone)) {
1424 if (filter_options.choice)
1425 die(_("--filter can only be used with the remote configured in core.partialClone"));
1426 return;
1427 }
1428 /*
1430 * Do a partial-fetch from the promisor remote using either the
1431 * explicitly given filter-spec or inherit the filter-spec from
1432 * the config.
1433 */
1434 if (!filter_options.choice)
1435 partial_clone_get_default_filter_spec(&filter_options);
1436 return;
1437}
1438static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
1440{
1441 struct refspec rs = REFSPEC_INIT_FETCH;
1442 int i;
1443 int exit_code;
1444 int maybe_prune_tags;
1445 int remote_via_config = remote_is_configured(remote, 0);
1446 if (!remote)
1448 die(_("No remote repository specified. Please, specify either a URL or a\n"
1449 "remote name from which new revisions should be fetched."));
1450 gtransport = prepare_transport(remote, 1);
1452 if (prune < 0) {
1454 /* no command line request */
1455 if (0 <= remote->prune)
1456 prune = remote->prune;
1457 else if (0 <= fetch_prune_config)
1458 prune = fetch_prune_config;
1459 else
1460 prune = PRUNE_BY_DEFAULT;
1461 }
1462 if (prune_tags < 0) {
1464 /* no command line request */
1465 if (0 <= remote->prune_tags)
1466 prune_tags = remote->prune_tags;
1467 else if (0 <= fetch_prune_tags_config)
1468 prune_tags = fetch_prune_tags_config;
1469 else
1470 prune_tags = PRUNE_TAGS_BY_DEFAULT;
1471 }
1472 maybe_prune_tags = prune_tags_ok && prune_tags;
1474 if (maybe_prune_tags && remote_via_config)
1475 refspec_append(&remote->fetch, TAG_REFSPEC);
1476 if (maybe_prune_tags && (argc || !remote_via_config))
1478 refspec_append(&rs, TAG_REFSPEC);
1479 for (i = 0; i < argc; i++) {
1481 if (!strcmp(argv[i], "tag")) {
1482 char *tag;
1483 i++;
1484 if (i >= argc)
1485 die(_("You need to specify a tag name."));
1486 tag = xstrfmt("refs/tags/%s:refs/tags/%s",
1488 argv[i], argv[i]);
1489 refspec_append(&rs, tag);
1490 free(tag);
1491 } else {
1492 refspec_append(&rs, argv[i]);
1493 }
1494 }
1495 if (server_options.nr)
1497 gtransport->server_options = &server_options;
1498 sigchain_push_common(unlock_pack_on_signal);
1500 atexit(unlock_pack);
1501 exit_code = do_fetch(gtransport, &rs);
1502 refspec_clear(&rs);
1503 transport_disconnect(gtransport);
1504 gtransport = NULL;
1505 return exit_code;
1506}
1507int cmd_fetch(int argc, const char **argv, const char *prefix)
1509{
1510 int i;
1511 struct string_list list = STRING_LIST_INIT_DUP;
1512 struct remote *remote = NULL;
1513 int result = 0;
1514 int prune_tags_ok = 1;
1515 struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
1516 packet_trace_identity("fetch");
1518 fetch_if_missing = 0;
1520 /* Record the command line for the reflog */
1522 strbuf_addstr(&default_rla, "fetch");
1523 for (i = 1; i < argc; i++)
1524 strbuf_addf(&default_rla, " %s", argv[i]);
1525 fetch_config_from_gitmodules(&max_children, &recurse_submodules);
1527 git_config(git_fetch_config, NULL);
1528 argc = parse_options(argc, argv, prefix,
1530 builtin_fetch_options, builtin_fetch_usage, 0);
1531 if (deepen_relative) {
1533 if (deepen_relative < 0)
1534 die(_("Negative depth in --deepen is not supported"));
1535 if (depth)
1536 die(_("--deepen and --depth are mutually exclusive"));
1537 depth = xstrfmt("%d", deepen_relative);
1538 }
1539 if (unshallow) {
1540 if (depth)
1541 die(_("--depth and --unshallow cannot be used together"));
1542 else if (!is_repository_shallow(the_repository))
1543 die(_("--unshallow on a complete repository does not make sense"));
1544 else
1545 depth = xstrfmt("%d", INFINITE_DEPTH);
1546 }
1547 /* no need to be strict, transport_set_option() will validate it again */
1549 if (depth && atoi(depth) < 1)
1550 die(_("depth %s is not a positive number"), depth);
1551 if (depth || deepen_since || deepen_not.nr)
1552 deepen = 1;
1553 if (filter_options.choice && !repository_format_partial_clone)
1555 die("--filter can only be used when extensions.partialClone is set");
1556 if (all) {
1558 if (argc == 1)
1559 die(_("fetch --all does not take a repository argument"));
1560 else if (argc > 1)
1561 die(_("fetch --all does not make sense with refspecs"));
1562 (void) for_each_remote(get_one_remote_for_fetch, &list);
1563 } else if (argc == 0) {
1564 /* No arguments -- use default remote */
1565 remote = remote_get(NULL);
1566 } else if (multiple) {
1567 /* All arguments are assumed to be remotes or groups */
1568 for (i = 0; i < argc; i++)
1569 if (!add_remote_or_group(argv[i], &list))
1570 die(_("No such remote or remote group: %s"), argv[i]);
1571 } else {
1572 /* Single remote or group */
1573 (void) add_remote_or_group(argv[0], &list);
1574 if (list.nr > 1) {
1575 /* More than one remote */
1576 if (argc > 1)
1577 die(_("Fetching a group and specifying refspecs does not make sense"));
1578 } else {
1579 /* Zero or one remotes */
1580 remote = remote_get(argv[0]);
1581 prune_tags_ok = (argc == 1);
1582 argc--;
1583 argv++;
1584 }
1585 }
1586 if (remote) {
1588 if (filter_options.choice || repository_format_partial_clone)
1589 fetch_one_setup_partial(remote);
1590 result = fetch_one(remote, argc, argv, prune_tags_ok);
1591 } else {
1592 if (filter_options.choice)
1593 die(_("--filter can only be used with the remote configured in core.partialClone"));
1594 /* TODO should this also die if we have a previous partial-clone? */
1595 result = fetch_multiple(&list);
1596 }
1597 if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1599 struct argv_array options = ARGV_ARRAY_INIT;
1600 add_options_to_argv(&options);
1602 result = fetch_populated_submodules(the_repository,
1603 &options,
1604 submodule_prefix,
1605 recurse_submodules,
1606 recurse_submodules_default,
1607 verbosity < 0,
1608 max_children);
1609 argv_array_clear(&options);
1610 }
1611 string_list_clear(&list, 0);
1613 close_all_packs(the_repository->objects);
1615 argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
1617 if (verbosity < 0)
1618 argv_array_push(&argv_gc_auto, "--quiet");
1619 run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1620 argv_array_clear(&argv_gc_auto);
1621 return result;
1623}