2 * The backend-independent part of the reference module.
11 #include "refs/refs-internal.h"
14 #include "submodule.h"
18 * List of all available backends
20 static struct ref_storage_be *refs_backends = &refs_be_files;
22 static struct ref_storage_be *find_ref_storage_backend(const char *name)
24 struct ref_storage_be *be;
25 for (be = refs_backends; be; be = be->next)
26 if (!strcmp(be->name, name))
31 int ref_storage_backend_exists(const char *name)
33 return find_ref_storage_backend(name) != NULL;
37 * How to handle various characters in refnames:
38 * 0: An acceptable character for refs
40 * 2: ., look for a preceding . to reject .. in refs
41 * 3: {, look for a preceding @ to reject @{ in refs
42 * 4: A bad character: ASCII control characters, and
43 * ":", "?", "[", "\", "^", "~", SP, or TAB
44 * 5: *, reject unless REFNAME_REFSPEC_PATTERN is set
46 static unsigned char refname_disposition[256] = {
47 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
48 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
49 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1,
50 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4,
51 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
52 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0,
53 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
54 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4
58 * Try to read one refname component from the front of refname.
59 * Return the length of the component found, or -1 if the component is
60 * not legal. It is legal if it is something reasonable to have under
61 * ".git/refs/"; We do not like it if:
63 * - any path component of it begins with ".", or
64 * - it has double dots "..", or
65 * - it has ASCII control characters, or
66 * - it has ":", "?", "[", "\", "^", "~", SP, or TAB anywhere, or
67 * - it has "*" anywhere unless REFNAME_REFSPEC_PATTERN is set, or
68 * - it ends with a "/", or
69 * - it ends with ".lock", or
70 * - it contains a "@{" portion
72 static int check_refname_component(const char *refname, int *flags)
77 for (cp = refname; ; cp++) {
79 unsigned char disp = refname_disposition[ch];
85 return -1; /* Refname contains "..". */
89 return -1; /* Refname contains "@{". */
94 if (!(*flags & REFNAME_REFSPEC_PATTERN))
95 return -1; /* refspec can't be a pattern */
98 * Unset the pattern flag so that we only accept
99 * a single asterisk for one side of refspec.
101 *flags &= ~ REFNAME_REFSPEC_PATTERN;
108 return 0; /* Component has zero length. */
109 if (refname[0] == '.')
110 return -1; /* Component starts with '.'. */
111 if (cp - refname >= LOCK_SUFFIX_LEN &&
112 !memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN))
113 return -1; /* Refname ends with ".lock". */
117 int check_refname_format(const char *refname, int flags)
119 int component_len, component_count = 0;
121 if (!strcmp(refname, "@"))
122 /* Refname is a single character '@'. */
126 /* We are at the start of a path component. */
127 component_len = check_refname_component(refname, &flags);
128 if (component_len <= 0)
132 if (refname[component_len] == '\0')
134 /* Skip to next component. */
135 refname += component_len + 1;
138 if (refname[component_len - 1] == '.')
139 return -1; /* Refname ends with '.'. */
140 if (!(flags & REFNAME_ALLOW_ONELEVEL) && component_count < 2)
141 return -1; /* Refname has only one component. */
145 int refname_is_safe(const char *refname)
149 if (skip_prefix(refname, "refs/", &rest)) {
152 size_t restlen = strlen(rest);
154 /* rest must not be empty, or start or end with "/" */
155 if (!restlen || *rest == '/' || rest[restlen - 1] == '/')
159 * Does the refname try to escape refs/?
160 * For example: refs/foo/../bar is safe but refs/foo/../../bar
163 buf = xmallocz(restlen);
164 result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest);
170 if (!isupper(*refname) && *refname != '_')
178 * Return true if refname, which has the specified oid and flags, can
179 * be resolved to an object in the database. If the referred-to object
180 * does not exist, emit a warning and return false.
182 int ref_resolves_to_object(const char *refname,
183 const struct object_id *oid,
186 if (flags & REF_ISBROKEN)
188 if (!has_sha1_file(oid->hash)) {
189 error("%s does not point to a valid object!", refname);
195 char *refs_resolve_refdup(struct ref_store *refs,
196 const char *refname, int resolve_flags,
197 struct object_id *oid, int *flags)
201 result = refs_resolve_ref_unsafe(refs, refname, resolve_flags,
203 return xstrdup_or_null(result);
206 char *resolve_refdup(const char *refname, int resolve_flags,
207 struct object_id *oid, int *flags)
209 return refs_resolve_refdup(get_main_ref_store(),
210 refname, resolve_flags,
214 /* The argument to filter_refs */
221 int refs_read_ref_full(struct ref_store *refs, const char *refname,
222 int resolve_flags, struct object_id *oid, int *flags)
224 if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, oid, flags))
229 int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags)
231 return refs_read_ref_full(get_main_ref_store(), refname,
232 resolve_flags, oid, flags);
235 int read_ref(const char *refname, struct object_id *oid)
237 return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL);
240 int ref_exists(const char *refname)
242 return !!resolve_ref_unsafe(refname, RESOLVE_REF_READING, NULL, NULL);
245 static int filter_refs(const char *refname, const struct object_id *oid,
246 int flags, void *data)
248 struct ref_filter *filter = (struct ref_filter *)data;
250 if (wildmatch(filter->pattern, refname, 0))
252 return filter->fn(refname, oid, flags, filter->cb_data);
255 enum peel_status peel_object(const struct object_id *name, struct object_id *oid)
257 struct object *o = lookup_unknown_object(name->hash);
259 if (o->type == OBJ_NONE) {
260 int type = sha1_object_info(name->hash, NULL);
261 if (type < 0 || !object_as_type(o, type, 0))
265 if (o->type != OBJ_TAG)
268 o = deref_tag_noverify(o);
272 oidcpy(oid, &o->oid);
276 struct warn_if_dangling_data {
279 const struct string_list *refnames;
283 static int warn_if_dangling_symref(const char *refname, const struct object_id *oid,
284 int flags, void *cb_data)
286 struct warn_if_dangling_data *d = cb_data;
287 const char *resolves_to;
289 if (!(flags & REF_ISSYMREF))
292 resolves_to = resolve_ref_unsafe(refname, 0, NULL, NULL);
295 ? strcmp(resolves_to, d->refname)
296 : !string_list_has_string(d->refnames, resolves_to))) {
300 fprintf(d->fp, d->msg_fmt, refname);
305 void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname)
307 struct warn_if_dangling_data data;
310 data.refname = refname;
311 data.refnames = NULL;
312 data.msg_fmt = msg_fmt;
313 for_each_rawref(warn_if_dangling_symref, &data);
316 void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames)
318 struct warn_if_dangling_data data;
322 data.refnames = refnames;
323 data.msg_fmt = msg_fmt;
324 for_each_rawref(warn_if_dangling_symref, &data);
327 int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
329 return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data);
332 int for_each_tag_ref(each_ref_fn fn, void *cb_data)
334 return refs_for_each_tag_ref(get_main_ref_store(), fn, cb_data);
337 int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
339 return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data);
342 int for_each_branch_ref(each_ref_fn fn, void *cb_data)
344 return refs_for_each_branch_ref(get_main_ref_store(), fn, cb_data);
347 int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
349 return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data);
352 int for_each_remote_ref(each_ref_fn fn, void *cb_data)
354 return refs_for_each_remote_ref(get_main_ref_store(), fn, cb_data);
357 int head_ref_namespaced(each_ref_fn fn, void *cb_data)
359 struct strbuf buf = STRBUF_INIT;
361 struct object_id oid;
364 strbuf_addf(&buf, "%sHEAD", get_git_namespace());
365 if (!read_ref_full(buf.buf, RESOLVE_REF_READING, &oid, &flag))
366 ret = fn(buf.buf, &oid, flag, cb_data);
367 strbuf_release(&buf);
372 int for_each_glob_ref_in(each_ref_fn fn, const char *pattern,
373 const char *prefix, void *cb_data)
375 struct strbuf real_pattern = STRBUF_INIT;
376 struct ref_filter filter;
379 if (!prefix && !starts_with(pattern, "refs/"))
380 strbuf_addstr(&real_pattern, "refs/");
382 strbuf_addstr(&real_pattern, prefix);
383 strbuf_addstr(&real_pattern, pattern);
385 if (!has_glob_specials(pattern)) {
386 /* Append implied '/' '*' if not present. */
387 strbuf_complete(&real_pattern, '/');
388 /* No need to check for '*', there is none. */
389 strbuf_addch(&real_pattern, '*');
392 filter.pattern = real_pattern.buf;
394 filter.cb_data = cb_data;
395 ret = for_each_ref(filter_refs, &filter);
397 strbuf_release(&real_pattern);
401 int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data)
403 return for_each_glob_ref_in(fn, pattern, NULL, cb_data);
406 const char *prettify_refname(const char *name)
408 if (skip_prefix(name, "refs/heads/", &name) ||
409 skip_prefix(name, "refs/tags/", &name) ||
410 skip_prefix(name, "refs/remotes/", &name))
415 static const char *ref_rev_parse_rules[] = {
421 "refs/remotes/%.*s/HEAD",
425 int refname_match(const char *abbrev_name, const char *full_name)
428 const int abbrev_name_len = strlen(abbrev_name);
430 for (p = ref_rev_parse_rules; *p; p++) {
431 if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) {
440 * *string and *len will only be substituted, and *string returned (for
441 * later free()ing) if the string passed in is a magic short-hand form
444 static char *substitute_branch_name(const char **string, int *len)
446 struct strbuf buf = STRBUF_INIT;
447 int ret = interpret_branch_name(*string, *len, &buf, 0);
451 *string = strbuf_detach(&buf, &size);
453 return (char *)*string;
459 int dwim_ref(const char *str, int len, struct object_id *oid, char **ref)
461 char *last_branch = substitute_branch_name(&str, &len);
462 int refs_found = expand_ref(str, len, oid, ref);
467 int expand_ref(const char *str, int len, struct object_id *oid, char **ref)
471 struct strbuf fullref = STRBUF_INIT;
474 for (p = ref_rev_parse_rules; *p; p++) {
475 struct object_id oid_from_ref;
476 struct object_id *this_result;
479 this_result = refs_found ? &oid_from_ref : oid;
480 strbuf_reset(&fullref);
481 strbuf_addf(&fullref, *p, len, str);
482 r = resolve_ref_unsafe(fullref.buf, RESOLVE_REF_READING,
487 if (!warn_ambiguous_refs)
489 } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) {
490 warning("ignoring dangling symref %s.", fullref.buf);
491 } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) {
492 warning("ignoring broken ref %s.", fullref.buf);
495 strbuf_release(&fullref);
499 int dwim_log(const char *str, int len, struct object_id *oid, char **log)
501 char *last_branch = substitute_branch_name(&str, &len);
504 struct strbuf path = STRBUF_INIT;
507 for (p = ref_rev_parse_rules; *p; p++) {
508 struct object_id hash;
509 const char *ref, *it;
512 strbuf_addf(&path, *p, len, str);
513 ref = resolve_ref_unsafe(path.buf, RESOLVE_REF_READING,
517 if (reflog_exists(path.buf))
519 else if (strcmp(ref, path.buf) && reflog_exists(ref))
527 if (!warn_ambiguous_refs)
530 strbuf_release(&path);
535 static int is_per_worktree_ref(const char *refname)
537 return !strcmp(refname, "HEAD") ||
538 starts_with(refname, "refs/bisect/");
541 static int is_pseudoref_syntax(const char *refname)
545 for (c = refname; *c; c++) {
546 if (!isupper(*c) && *c != '-' && *c != '_')
553 enum ref_type ref_type(const char *refname)
555 if (is_per_worktree_ref(refname))
556 return REF_TYPE_PER_WORKTREE;
557 if (is_pseudoref_syntax(refname))
558 return REF_TYPE_PSEUDOREF;
559 return REF_TYPE_NORMAL;
562 long get_files_ref_lock_timeout_ms(void)
564 static int configured = 0;
566 /* The default timeout is 100 ms: */
567 static int timeout_ms = 100;
570 git_config_get_int("core.filesreflocktimeout", &timeout_ms);
577 static int write_pseudoref(const char *pseudoref, const struct object_id *oid,
578 const struct object_id *old_oid, struct strbuf *err)
580 const char *filename;
582 static struct lock_file lock;
583 struct strbuf buf = STRBUF_INIT;
589 strbuf_addf(&buf, "%s\n", oid_to_hex(oid));
591 filename = git_path("%s", pseudoref);
592 fd = hold_lock_file_for_update_timeout(&lock, filename,
594 get_files_ref_lock_timeout_ms());
596 strbuf_addf(err, "could not open '%s' for writing: %s",
597 filename, strerror(errno));
602 struct object_id actual_old_oid;
604 if (read_ref(pseudoref, &actual_old_oid))
605 die("could not read ref '%s'", pseudoref);
606 if (oidcmp(&actual_old_oid, old_oid)) {
607 strbuf_addf(err, "unexpected sha1 when writing '%s'", pseudoref);
608 rollback_lock_file(&lock);
613 if (write_in_full(fd, buf.buf, buf.len) < 0) {
614 strbuf_addf(err, "could not write to '%s'", filename);
615 rollback_lock_file(&lock);
619 commit_lock_file(&lock);
622 strbuf_release(&buf);
626 static int delete_pseudoref(const char *pseudoref, const struct object_id *old_oid)
628 static struct lock_file lock;
629 const char *filename;
631 filename = git_path("%s", pseudoref);
633 if (old_oid && !is_null_oid(old_oid)) {
635 struct object_id actual_old_oid;
637 fd = hold_lock_file_for_update_timeout(
638 &lock, filename, LOCK_DIE_ON_ERROR,
639 get_files_ref_lock_timeout_ms());
641 die_errno(_("Could not open '%s' for writing"), filename);
642 if (read_ref(pseudoref, &actual_old_oid))
643 die("could not read ref '%s'", pseudoref);
644 if (oidcmp(&actual_old_oid, old_oid)) {
645 warning("Unexpected sha1 when deleting %s", pseudoref);
646 rollback_lock_file(&lock);
651 rollback_lock_file(&lock);
659 int refs_delete_ref(struct ref_store *refs, const char *msg,
661 const struct object_id *old_oid,
664 struct ref_transaction *transaction;
665 struct strbuf err = STRBUF_INIT;
667 if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
668 assert(refs == get_main_ref_store());
669 return delete_pseudoref(refname, old_oid);
672 transaction = ref_store_transaction_begin(refs, &err);
674 ref_transaction_delete(transaction, refname, old_oid,
676 ref_transaction_commit(transaction, &err)) {
677 error("%s", err.buf);
678 ref_transaction_free(transaction);
679 strbuf_release(&err);
682 ref_transaction_free(transaction);
683 strbuf_release(&err);
687 int delete_ref(const char *msg, const char *refname,
688 const struct object_id *old_oid, unsigned int flags)
690 return refs_delete_ref(get_main_ref_store(), msg, refname,
694 int copy_reflog_msg(char *buf, const char *msg)
701 while ((c = *msg++)) {
702 if (wasspace && isspace(c))
704 wasspace = isspace(c);
709 while (buf < cp && isspace(cp[-1]))
715 int should_autocreate_reflog(const char *refname)
717 switch (log_all_ref_updates) {
718 case LOG_REFS_ALWAYS:
720 case LOG_REFS_NORMAL:
721 return starts_with(refname, "refs/heads/") ||
722 starts_with(refname, "refs/remotes/") ||
723 starts_with(refname, "refs/notes/") ||
724 !strcmp(refname, "HEAD");
730 int is_branch(const char *refname)
732 return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/");
735 struct read_ref_at_cb {
740 struct object_id *oid;
743 struct object_id ooid;
744 struct object_id noid;
748 timestamp_t *cutoff_time;
753 static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid,
754 const char *email, timestamp_t timestamp, int tz,
755 const char *message, void *cb_data)
757 struct read_ref_at_cb *cb = cb_data;
761 cb->date = timestamp;
763 if (timestamp <= cb->at_time || cb->cnt == 0) {
765 *cb->msg = xstrdup(message);
767 *cb->cutoff_time = timestamp;
771 *cb->cutoff_cnt = cb->reccnt - 1;
773 * we have not yet updated cb->[n|o]sha1 so they still
774 * hold the values for the previous record.
776 if (!is_null_oid(&cb->ooid)) {
777 oidcpy(cb->oid, noid);
778 if (oidcmp(&cb->ooid, noid))
779 warning("Log for ref %s has gap after %s.",
780 cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822)));
782 else if (cb->date == cb->at_time)
783 oidcpy(cb->oid, noid);
784 else if (oidcmp(noid, cb->oid))
785 warning("Log for ref %s unexpectedly ended on %s.",
786 cb->refname, show_date(cb->date, cb->tz,
787 DATE_MODE(RFC2822)));
788 oidcpy(&cb->ooid, ooid);
789 oidcpy(&cb->noid, noid);
793 oidcpy(&cb->ooid, ooid);
794 oidcpy(&cb->noid, noid);
800 static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid,
801 const char *email, timestamp_t timestamp,
802 int tz, const char *message, void *cb_data)
804 struct read_ref_at_cb *cb = cb_data;
807 *cb->msg = xstrdup(message);
809 *cb->cutoff_time = timestamp;
813 *cb->cutoff_cnt = cb->reccnt;
814 oidcpy(cb->oid, ooid);
815 if (is_null_oid(cb->oid))
816 oidcpy(cb->oid, noid);
817 /* We just want the first entry */
821 int read_ref_at(const char *refname, unsigned int flags, timestamp_t at_time, int cnt,
822 struct object_id *oid, char **msg,
823 timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
825 struct read_ref_at_cb cb;
827 memset(&cb, 0, sizeof(cb));
828 cb.refname = refname;
829 cb.at_time = at_time;
832 cb.cutoff_time = cutoff_time;
833 cb.cutoff_tz = cutoff_tz;
834 cb.cutoff_cnt = cutoff_cnt;
837 for_each_reflog_ent_reverse(refname, read_ref_at_ent, &cb);
840 if (flags & GET_OID_QUIETLY)
843 die("Log for %s is empty.", refname);
848 for_each_reflog_ent(refname, read_ref_at_ent_oldest, &cb);
853 struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs,
856 struct ref_transaction *tr;
859 tr = xcalloc(1, sizeof(struct ref_transaction));
860 tr->ref_store = refs;
864 struct ref_transaction *ref_transaction_begin(struct strbuf *err)
866 return ref_store_transaction_begin(get_main_ref_store(), err);
869 void ref_transaction_free(struct ref_transaction *transaction)
876 switch (transaction->state) {
877 case REF_TRANSACTION_OPEN:
878 case REF_TRANSACTION_CLOSED:
881 case REF_TRANSACTION_PREPARED:
882 die("BUG: free called on a prepared reference transaction");
885 die("BUG: unexpected reference transaction state");
889 for (i = 0; i < transaction->nr; i++) {
890 free(transaction->updates[i]->msg);
891 free(transaction->updates[i]);
893 free(transaction->updates);
897 struct ref_update *ref_transaction_add_update(
898 struct ref_transaction *transaction,
899 const char *refname, unsigned int flags,
900 const struct object_id *new_oid,
901 const struct object_id *old_oid,
904 struct ref_update *update;
906 if (transaction->state != REF_TRANSACTION_OPEN)
907 die("BUG: update called for transaction that is not open");
909 if ((flags & REF_ISPRUNING) && !(flags & REF_NODEREF))
910 die("BUG: REF_ISPRUNING set without REF_NODEREF");
912 FLEX_ALLOC_STR(update, refname, refname);
913 ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc);
914 transaction->updates[transaction->nr++] = update;
916 update->flags = flags;
918 if (flags & REF_HAVE_NEW)
919 oidcpy(&update->new_oid, new_oid);
920 if (flags & REF_HAVE_OLD)
921 oidcpy(&update->old_oid, old_oid);
922 update->msg = xstrdup_or_null(msg);
926 int ref_transaction_update(struct ref_transaction *transaction,
928 const struct object_id *new_oid,
929 const struct object_id *old_oid,
930 unsigned int flags, const char *msg,
935 if ((new_oid && !is_null_oid(new_oid)) ?
936 check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) :
937 !refname_is_safe(refname)) {
938 strbuf_addf(err, "refusing to update ref with bad name '%s'",
943 flags &= REF_TRANSACTION_UPDATE_ALLOWED_FLAGS;
945 flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0);
947 ref_transaction_add_update(transaction, refname, flags,
948 new_oid, old_oid, msg);
952 int ref_transaction_create(struct ref_transaction *transaction,
954 const struct object_id *new_oid,
955 unsigned int flags, const char *msg,
958 if (!new_oid || is_null_oid(new_oid))
959 die("BUG: create called without valid new_oid");
960 return ref_transaction_update(transaction, refname, new_oid,
961 &null_oid, flags, msg, err);
964 int ref_transaction_delete(struct ref_transaction *transaction,
966 const struct object_id *old_oid,
967 unsigned int flags, const char *msg,
970 if (old_oid && is_null_oid(old_oid))
971 die("BUG: delete called with old_oid set to zeros");
972 return ref_transaction_update(transaction, refname,
977 int ref_transaction_verify(struct ref_transaction *transaction,
979 const struct object_id *old_oid,
984 die("BUG: verify called with old_oid set to NULL");
985 return ref_transaction_update(transaction, refname,
990 int refs_update_ref(struct ref_store *refs, const char *msg,
991 const char *refname, const struct object_id *new_oid,
992 const struct object_id *old_oid, unsigned int flags,
993 enum action_on_err onerr)
995 struct ref_transaction *t = NULL;
996 struct strbuf err = STRBUF_INIT;
999 if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
1000 assert(refs == get_main_ref_store());
1001 ret = write_pseudoref(refname, new_oid, old_oid, &err);
1003 t = ref_store_transaction_begin(refs, &err);
1005 ref_transaction_update(t, refname, new_oid, old_oid,
1006 flags, msg, &err) ||
1007 ref_transaction_commit(t, &err)) {
1009 ref_transaction_free(t);
1013 const char *str = "update_ref failed for ref '%s': %s";
1016 case UPDATE_REFS_MSG_ON_ERR:
1017 error(str, refname, err.buf);
1019 case UPDATE_REFS_DIE_ON_ERR:
1020 die(str, refname, err.buf);
1022 case UPDATE_REFS_QUIET_ON_ERR:
1025 strbuf_release(&err);
1028 strbuf_release(&err);
1030 ref_transaction_free(t);
1034 int update_ref(const char *msg, const char *refname,
1035 const struct object_id *new_oid,
1036 const struct object_id *old_oid,
1037 unsigned int flags, enum action_on_err onerr)
1039 return refs_update_ref(get_main_ref_store(), msg, refname, new_oid,
1040 old_oid, flags, onerr);
1043 char *shorten_unambiguous_ref(const char *refname, int strict)
1046 static char **scanf_fmts;
1047 static int nr_rules;
1049 struct strbuf resolved_buf = STRBUF_INIT;
1053 * Pre-generate scanf formats from ref_rev_parse_rules[].
1054 * Generate a format suitable for scanf from a
1055 * ref_rev_parse_rules rule by interpolating "%s" at the
1056 * location of the "%.*s".
1058 size_t total_len = 0;
1061 /* the rule list is NULL terminated, count them first */
1062 for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++)
1063 /* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */
1064 total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1;
1066 scanf_fmts = xmalloc(st_add(st_mult(sizeof(char *), nr_rules), total_len));
1069 for (i = 0; i < nr_rules; i++) {
1070 assert(offset < total_len);
1071 scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset;
1072 offset += snprintf(scanf_fmts[i], total_len - offset,
1073 ref_rev_parse_rules[i], 2, "%s") + 1;
1077 /* bail out if there are no rules */
1079 return xstrdup(refname);
1081 /* buffer for scanf result, at most refname must fit */
1082 short_name = xstrdup(refname);
1084 /* skip first rule, it will always match */
1085 for (i = nr_rules - 1; i > 0 ; --i) {
1087 int rules_to_fail = i;
1090 if (1 != sscanf(refname, scanf_fmts[i], short_name))
1093 short_name_len = strlen(short_name);
1096 * in strict mode, all (except the matched one) rules
1097 * must fail to resolve to a valid non-ambiguous ref
1100 rules_to_fail = nr_rules;
1103 * check if the short name resolves to a valid ref,
1104 * but use only rules prior to the matched one
1106 for (j = 0; j < rules_to_fail; j++) {
1107 const char *rule = ref_rev_parse_rules[j];
1109 /* skip matched rule */
1114 * the short name is ambiguous, if it resolves
1115 * (with this previous rule) to a valid ref
1116 * read_ref() returns 0 on success
1118 strbuf_reset(&resolved_buf);
1119 strbuf_addf(&resolved_buf, rule,
1120 short_name_len, short_name);
1121 if (ref_exists(resolved_buf.buf))
1126 * short name is non-ambiguous if all previous rules
1127 * haven't resolved to a valid ref
1129 if (j == rules_to_fail) {
1130 strbuf_release(&resolved_buf);
1135 strbuf_release(&resolved_buf);
1137 return xstrdup(refname);
1140 static struct string_list *hide_refs;
1142 int parse_hide_refs_config(const char *var, const char *value, const char *section)
1145 if (!strcmp("transfer.hiderefs", var) ||
1146 (!parse_config_key(var, section, NULL, NULL, &key) &&
1147 !strcmp(key, "hiderefs"))) {
1152 return config_error_nonbool(var);
1153 ref = xstrdup(value);
1155 while (len && ref[len - 1] == '/')
1158 hide_refs = xcalloc(1, sizeof(*hide_refs));
1159 hide_refs->strdup_strings = 1;
1161 string_list_append(hide_refs, ref);
1166 int ref_is_hidden(const char *refname, const char *refname_full)
1172 for (i = hide_refs->nr - 1; i >= 0; i--) {
1173 const char *match = hide_refs->items[i].string;
1174 const char *subject;
1178 if (*match == '!') {
1183 if (*match == '^') {
1184 subject = refname_full;
1190 /* refname can be NULL when namespaces are used. */
1192 skip_prefix(subject, match, &p) &&
1199 const char *find_descendant_ref(const char *dirname,
1200 const struct string_list *extras,
1201 const struct string_list *skip)
1209 * Look at the place where dirname would be inserted into
1210 * extras. If there is an entry at that position that starts
1211 * with dirname (remember, dirname includes the trailing
1212 * slash) and is not in skip, then we have a conflict.
1214 for (pos = string_list_find_insert_index(extras, dirname, 0);
1215 pos < extras->nr; pos++) {
1216 const char *extra_refname = extras->items[pos].string;
1218 if (!starts_with(extra_refname, dirname))
1221 if (!skip || !string_list_has_string(skip, extra_refname))
1222 return extra_refname;
1227 int refs_rename_ref_available(struct ref_store *refs,
1228 const char *old_refname,
1229 const char *new_refname)
1231 struct string_list skip = STRING_LIST_INIT_NODUP;
1232 struct strbuf err = STRBUF_INIT;
1235 string_list_insert(&skip, old_refname);
1236 ok = !refs_verify_refname_available(refs, new_refname,
1239 error("%s", err.buf);
1241 string_list_clear(&skip, 0);
1242 strbuf_release(&err);
1246 int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
1248 struct object_id oid;
1251 if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING,
1253 return fn("HEAD", &oid, flag, cb_data);
1258 int head_ref(each_ref_fn fn, void *cb_data)
1260 return refs_head_ref(get_main_ref_store(), fn, cb_data);
1263 struct ref_iterator *refs_ref_iterator_begin(
1264 struct ref_store *refs,
1265 const char *prefix, int trim, int flags)
1267 struct ref_iterator *iter;
1269 if (ref_paranoia < 0)
1270 ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0);
1272 flags |= DO_FOR_EACH_INCLUDE_BROKEN;
1274 iter = refs->be->iterator_begin(refs, prefix, flags);
1277 * `iterator_begin()` already takes care of prefix, but we
1278 * might need to do some trimming:
1281 iter = prefix_ref_iterator_begin(iter, "", trim);
1283 /* Sanity check for subclasses: */
1285 BUG("reference iterator is not ordered");
1291 * Call fn for each reference in the specified submodule for which the
1292 * refname begins with prefix. If trim is non-zero, then trim that
1293 * many characters off the beginning of each refname before passing
1294 * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to
1295 * include broken references in the iteration. If fn ever returns a
1296 * non-zero value, stop the iteration and return that value;
1297 * otherwise, return 0.
1299 static int do_for_each_ref(struct ref_store *refs, const char *prefix,
1300 each_ref_fn fn, int trim, int flags, void *cb_data)
1302 struct ref_iterator *iter;
1307 iter = refs_ref_iterator_begin(refs, prefix, trim, flags);
1309 return do_for_each_ref_iterator(iter, fn, cb_data);
1312 int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
1314 return do_for_each_ref(refs, "", fn, 0, 0, cb_data);
1317 int for_each_ref(each_ref_fn fn, void *cb_data)
1319 return refs_for_each_ref(get_main_ref_store(), fn, cb_data);
1322 int refs_for_each_ref_in(struct ref_store *refs, const char *prefix,
1323 each_ref_fn fn, void *cb_data)
1325 return do_for_each_ref(refs, prefix, fn, strlen(prefix), 0, cb_data);
1328 int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data)
1330 return refs_for_each_ref_in(get_main_ref_store(), prefix, fn, cb_data);
1333 int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken)
1335 unsigned int flag = 0;
1338 flag = DO_FOR_EACH_INCLUDE_BROKEN;
1339 return do_for_each_ref(get_main_ref_store(),
1340 prefix, fn, 0, flag, cb_data);
1343 int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix,
1344 each_ref_fn fn, void *cb_data,
1345 unsigned int broken)
1347 unsigned int flag = 0;
1350 flag = DO_FOR_EACH_INCLUDE_BROKEN;
1351 return do_for_each_ref(refs, prefix, fn, 0, flag, cb_data);
1354 int for_each_replace_ref(each_ref_fn fn, void *cb_data)
1356 return do_for_each_ref(get_main_ref_store(),
1357 git_replace_ref_base, fn,
1358 strlen(git_replace_ref_base),
1359 DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
1362 int for_each_namespaced_ref(each_ref_fn fn, void *cb_data)
1364 struct strbuf buf = STRBUF_INIT;
1366 strbuf_addf(&buf, "%srefs/", get_git_namespace());
1367 ret = do_for_each_ref(get_main_ref_store(),
1368 buf.buf, fn, 0, 0, cb_data);
1369 strbuf_release(&buf);
1373 int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
1375 return do_for_each_ref(refs, "", fn, 0,
1376 DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
1379 int for_each_rawref(each_ref_fn fn, void *cb_data)
1381 return refs_for_each_rawref(get_main_ref_store(), fn, cb_data);
1384 int refs_read_raw_ref(struct ref_store *ref_store,
1385 const char *refname, struct object_id *oid,
1386 struct strbuf *referent, unsigned int *type)
1388 return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, type);
1391 /* This function needs to return a meaningful errno on failure */
1392 const char *refs_resolve_ref_unsafe(struct ref_store *refs,
1393 const char *refname,
1395 struct object_id *oid, int *flags)
1397 static struct strbuf sb_refname = STRBUF_INIT;
1398 struct object_id unused_oid;
1405 flags = &unused_flags;
1409 if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
1410 if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
1411 !refname_is_safe(refname)) {
1417 * dwim_ref() uses REF_ISBROKEN to distinguish between
1418 * missing refs and refs that were present but invalid,
1419 * to complain about the latter to stderr.
1421 * We don't know whether the ref exists, so don't set
1424 *flags |= REF_BAD_NAME;
1427 for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) {
1428 unsigned int read_flags = 0;
1430 if (refs_read_raw_ref(refs, refname,
1431 oid, &sb_refname, &read_flags)) {
1432 *flags |= read_flags;
1434 /* In reading mode, refs must eventually resolve */
1435 if (resolve_flags & RESOLVE_REF_READING)
1439 * Otherwise a missing ref is OK. But the files backend
1440 * may show errors besides ENOENT if there are
1441 * similarly-named refs.
1443 if (errno != ENOENT &&
1449 if (*flags & REF_BAD_NAME)
1450 *flags |= REF_ISBROKEN;
1454 *flags |= read_flags;
1456 if (!(read_flags & REF_ISSYMREF)) {
1457 if (*flags & REF_BAD_NAME) {
1459 *flags |= REF_ISBROKEN;
1464 refname = sb_refname.buf;
1465 if (resolve_flags & RESOLVE_REF_NO_RECURSE) {
1469 if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
1470 if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
1471 !refname_is_safe(refname)) {
1476 *flags |= REF_ISBROKEN | REF_BAD_NAME;
1484 /* backend functions */
1485 int refs_init_db(struct strbuf *err)
1487 struct ref_store *refs = get_main_ref_store();
1489 return refs->be->init_db(refs, err);
1492 const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
1493 struct object_id *oid, int *flags)
1495 return refs_resolve_ref_unsafe(get_main_ref_store(), refname,
1496 resolve_flags, oid, flags);
1499 int resolve_gitlink_ref(const char *submodule, const char *refname,
1500 struct object_id *oid)
1502 struct ref_store *refs;
1505 refs = get_submodule_ref_store(submodule);
1510 if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) ||
1516 struct ref_store_hash_entry
1518 struct hashmap_entry ent; /* must be the first member! */
1520 struct ref_store *refs;
1522 /* NUL-terminated identifier of the ref store: */
1523 char name[FLEX_ARRAY];
1526 static int ref_store_hash_cmp(const void *unused_cmp_data,
1527 const void *entry, const void *entry_or_key,
1528 const void *keydata)
1530 const struct ref_store_hash_entry *e1 = entry, *e2 = entry_or_key;
1531 const char *name = keydata ? keydata : e2->name;
1533 return strcmp(e1->name, name);
1536 static struct ref_store_hash_entry *alloc_ref_store_hash_entry(
1537 const char *name, struct ref_store *refs)
1539 struct ref_store_hash_entry *entry;
1541 FLEX_ALLOC_STR(entry, name, name);
1542 hashmap_entry_init(entry, strhash(name));
1547 /* A pointer to the ref_store for the main repository: */
1548 static struct ref_store *main_ref_store;
1550 /* A hashmap of ref_stores, stored by submodule name: */
1551 static struct hashmap submodule_ref_stores;
1553 /* A hashmap of ref_stores, stored by worktree id: */
1554 static struct hashmap worktree_ref_stores;
1557 * Look up a ref store by name. If that ref_store hasn't been
1558 * registered yet, return NULL.
1560 static struct ref_store *lookup_ref_store_map(struct hashmap *map,
1563 struct ref_store_hash_entry *entry;
1565 if (!map->tablesize)
1566 /* It's initialized on demand in register_ref_store(). */
1569 entry = hashmap_get_from_hash(map, strhash(name), name);
1570 return entry ? entry->refs : NULL;
1574 * Create, record, and return a ref_store instance for the specified
1577 static struct ref_store *ref_store_init(const char *gitdir,
1580 const char *be_name = "files";
1581 struct ref_storage_be *be = find_ref_storage_backend(be_name);
1582 struct ref_store *refs;
1585 die("BUG: reference backend %s is unknown", be_name);
1587 refs = be->init(gitdir, flags);
1591 struct ref_store *get_main_ref_store(void)
1594 return main_ref_store;
1596 main_ref_store = ref_store_init(get_git_dir(), REF_STORE_ALL_CAPS);
1597 return main_ref_store;
1601 * Associate a ref store with a name. It is a fatal error to call this
1602 * function twice for the same name.
1604 static void register_ref_store_map(struct hashmap *map,
1606 struct ref_store *refs,
1609 if (!map->tablesize)
1610 hashmap_init(map, ref_store_hash_cmp, NULL, 0);
1612 if (hashmap_put(map, alloc_ref_store_hash_entry(name, refs)))
1613 die("BUG: %s ref_store '%s' initialized twice", type, name);
1616 struct ref_store *get_submodule_ref_store(const char *submodule)
1618 struct strbuf submodule_sb = STRBUF_INIT;
1619 struct ref_store *refs;
1620 char *to_free = NULL;
1626 len = strlen(submodule);
1627 while (len && is_dir_sep(submodule[len - 1]))
1633 /* We need to strip off one or more trailing slashes */
1634 submodule = to_free = xmemdupz(submodule, len);
1636 refs = lookup_ref_store_map(&submodule_ref_stores, submodule);
1640 strbuf_addstr(&submodule_sb, submodule);
1641 if (!is_nonbare_repository_dir(&submodule_sb))
1644 if (submodule_to_gitdir(&submodule_sb, submodule))
1647 /* assume that add_submodule_odb() has been called */
1648 refs = ref_store_init(submodule_sb.buf,
1649 REF_STORE_READ | REF_STORE_ODB);
1650 register_ref_store_map(&submodule_ref_stores, "submodule",
1654 strbuf_release(&submodule_sb);
1660 struct ref_store *get_worktree_ref_store(const struct worktree *wt)
1662 struct ref_store *refs;
1666 return get_main_ref_store();
1668 id = wt->id ? wt->id : "/";
1669 refs = lookup_ref_store_map(&worktree_ref_stores, id);
1674 refs = ref_store_init(git_common_path("worktrees/%s", wt->id),
1675 REF_STORE_ALL_CAPS);
1677 refs = ref_store_init(get_git_common_dir(),
1678 REF_STORE_ALL_CAPS);
1681 register_ref_store_map(&worktree_ref_stores, "worktree",
1686 void base_ref_store_init(struct ref_store *refs,
1687 const struct ref_storage_be *be)
1692 /* backend functions */
1693 int refs_pack_refs(struct ref_store *refs, unsigned int flags)
1695 return refs->be->pack_refs(refs, flags);
1698 int refs_peel_ref(struct ref_store *refs, const char *refname,
1699 struct object_id *oid)
1702 struct object_id base;
1704 if (current_ref_iter && current_ref_iter->refname == refname) {
1705 struct object_id peeled;
1707 if (ref_iterator_peel(current_ref_iter, &peeled))
1709 oidcpy(oid, &peeled);
1713 if (refs_read_ref_full(refs, refname,
1714 RESOLVE_REF_READING, &base, &flag))
1717 return peel_object(&base, oid);
1720 int peel_ref(const char *refname, struct object_id *oid)
1722 return refs_peel_ref(get_main_ref_store(), refname, oid);
1725 int refs_create_symref(struct ref_store *refs,
1726 const char *ref_target,
1727 const char *refs_heads_master,
1730 return refs->be->create_symref(refs, ref_target,
1735 int create_symref(const char *ref_target, const char *refs_heads_master,
1738 return refs_create_symref(get_main_ref_store(), ref_target,
1739 refs_heads_master, logmsg);
1742 int ref_update_reject_duplicates(struct string_list *refnames,
1745 size_t i, n = refnames->nr;
1749 for (i = 1; i < n; i++) {
1750 int cmp = strcmp(refnames->items[i - 1].string,
1751 refnames->items[i].string);
1755 "multiple updates for ref '%s' not allowed.",
1756 refnames->items[i].string);
1758 } else if (cmp > 0) {
1759 die("BUG: ref_update_reject_duplicates() received unsorted list");
1765 int ref_transaction_prepare(struct ref_transaction *transaction,
1768 struct ref_store *refs = transaction->ref_store;
1770 switch (transaction->state) {
1771 case REF_TRANSACTION_OPEN:
1774 case REF_TRANSACTION_PREPARED:
1775 die("BUG: prepare called twice on reference transaction");
1777 case REF_TRANSACTION_CLOSED:
1778 die("BUG: prepare called on a closed reference transaction");
1781 die("BUG: unexpected reference transaction state");
1785 if (getenv(GIT_QUARANTINE_ENVIRONMENT)) {
1787 _("ref updates forbidden inside quarantine environment"));
1791 return refs->be->transaction_prepare(refs, transaction, err);
1794 int ref_transaction_abort(struct ref_transaction *transaction,
1797 struct ref_store *refs = transaction->ref_store;
1800 switch (transaction->state) {
1801 case REF_TRANSACTION_OPEN:
1802 /* No need to abort explicitly. */
1804 case REF_TRANSACTION_PREPARED:
1805 ret = refs->be->transaction_abort(refs, transaction, err);
1807 case REF_TRANSACTION_CLOSED:
1808 die("BUG: abort called on a closed reference transaction");
1811 die("BUG: unexpected reference transaction state");
1815 ref_transaction_free(transaction);
1819 int ref_transaction_commit(struct ref_transaction *transaction,
1822 struct ref_store *refs = transaction->ref_store;
1825 switch (transaction->state) {
1826 case REF_TRANSACTION_OPEN:
1827 /* Need to prepare first. */
1828 ret = ref_transaction_prepare(transaction, err);
1832 case REF_TRANSACTION_PREPARED:
1833 /* Fall through to finish. */
1835 case REF_TRANSACTION_CLOSED:
1836 die("BUG: commit called on a closed reference transaction");
1839 die("BUG: unexpected reference transaction state");
1843 return refs->be->transaction_finish(refs, transaction, err);
1846 int refs_verify_refname_available(struct ref_store *refs,
1847 const char *refname,
1848 const struct string_list *extras,
1849 const struct string_list *skip,
1853 const char *extra_refname;
1854 struct strbuf dirname = STRBUF_INIT;
1855 struct strbuf referent = STRBUF_INIT;
1856 struct object_id oid;
1858 struct ref_iterator *iter;
1863 * For the sake of comments in this function, suppose that
1864 * refname is "refs/foo/bar".
1869 strbuf_grow(&dirname, strlen(refname) + 1);
1870 for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) {
1871 /* Expand dirname to the new prefix, not including the trailing slash: */
1872 strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len);
1875 * We are still at a leading dir of the refname (e.g.,
1876 * "refs/foo"; if there is a reference with that name,
1877 * it is a conflict, *unless* it is in skip.
1879 if (skip && string_list_has_string(skip, dirname.buf))
1882 if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, &type)) {
1883 strbuf_addf(err, "'%s' exists; cannot create '%s'",
1884 dirname.buf, refname);
1888 if (extras && string_list_has_string(extras, dirname.buf)) {
1889 strbuf_addf(err, "cannot process '%s' and '%s' at the same time",
1890 refname, dirname.buf);
1896 * We are at the leaf of our refname (e.g., "refs/foo/bar").
1897 * There is no point in searching for a reference with that
1898 * name, because a refname isn't considered to conflict with
1899 * itself. But we still need to check for references whose
1900 * names are in the "refs/foo/bar/" namespace, because they
1903 strbuf_addstr(&dirname, refname + dirname.len);
1904 strbuf_addch(&dirname, '/');
1906 iter = refs_ref_iterator_begin(refs, dirname.buf, 0,
1907 DO_FOR_EACH_INCLUDE_BROKEN);
1908 while ((ok = ref_iterator_advance(iter)) == ITER_OK) {
1910 string_list_has_string(skip, iter->refname))
1913 strbuf_addf(err, "'%s' exists; cannot create '%s'",
1914 iter->refname, refname);
1915 ref_iterator_abort(iter);
1919 if (ok != ITER_DONE)
1920 die("BUG: error while iterating over references");
1922 extra_refname = find_descendant_ref(dirname.buf, extras, skip);
1924 strbuf_addf(err, "cannot process '%s' and '%s' at the same time",
1925 refname, extra_refname);
1930 strbuf_release(&referent);
1931 strbuf_release(&dirname);
1935 int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data)
1937 struct ref_iterator *iter;
1939 iter = refs->be->reflog_iterator_begin(refs);
1941 return do_for_each_ref_iterator(iter, fn, cb_data);
1944 int for_each_reflog(each_ref_fn fn, void *cb_data)
1946 return refs_for_each_reflog(get_main_ref_store(), fn, cb_data);
1949 int refs_for_each_reflog_ent_reverse(struct ref_store *refs,
1950 const char *refname,
1951 each_reflog_ent_fn fn,
1954 return refs->be->for_each_reflog_ent_reverse(refs, refname,
1958 int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn,
1961 return refs_for_each_reflog_ent_reverse(get_main_ref_store(),
1962 refname, fn, cb_data);
1965 int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname,
1966 each_reflog_ent_fn fn, void *cb_data)
1968 return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data);
1971 int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn,
1974 return refs_for_each_reflog_ent(get_main_ref_store(), refname,
1978 int refs_reflog_exists(struct ref_store *refs, const char *refname)
1980 return refs->be->reflog_exists(refs, refname);
1983 int reflog_exists(const char *refname)
1985 return refs_reflog_exists(get_main_ref_store(), refname);
1988 int refs_create_reflog(struct ref_store *refs, const char *refname,
1989 int force_create, struct strbuf *err)
1991 return refs->be->create_reflog(refs, refname, force_create, err);
1994 int safe_create_reflog(const char *refname, int force_create,
1997 return refs_create_reflog(get_main_ref_store(), refname,
2001 int refs_delete_reflog(struct ref_store *refs, const char *refname)
2003 return refs->be->delete_reflog(refs, refname);
2006 int delete_reflog(const char *refname)
2008 return refs_delete_reflog(get_main_ref_store(), refname);
2011 int refs_reflog_expire(struct ref_store *refs,
2012 const char *refname, const struct object_id *oid,
2014 reflog_expiry_prepare_fn prepare_fn,
2015 reflog_expiry_should_prune_fn should_prune_fn,
2016 reflog_expiry_cleanup_fn cleanup_fn,
2017 void *policy_cb_data)
2019 return refs->be->reflog_expire(refs, refname, oid, flags,
2020 prepare_fn, should_prune_fn,
2021 cleanup_fn, policy_cb_data);
2024 int reflog_expire(const char *refname, const struct object_id *oid,
2026 reflog_expiry_prepare_fn prepare_fn,
2027 reflog_expiry_should_prune_fn should_prune_fn,
2028 reflog_expiry_cleanup_fn cleanup_fn,
2029 void *policy_cb_data)
2031 return refs_reflog_expire(get_main_ref_store(),
2032 refname, oid, flags,
2033 prepare_fn, should_prune_fn,
2034 cleanup_fn, policy_cb_data);
2037 int initial_ref_transaction_commit(struct ref_transaction *transaction,
2040 struct ref_store *refs = transaction->ref_store;
2042 return refs->be->initial_transaction_commit(refs, transaction, err);
2045 int refs_delete_refs(struct ref_store *refs, const char *msg,
2046 struct string_list *refnames, unsigned int flags)
2048 return refs->be->delete_refs(refs, msg, refnames, flags);
2051 int delete_refs(const char *msg, struct string_list *refnames,
2054 return refs_delete_refs(get_main_ref_store(), msg, refnames, flags);
2057 int refs_rename_ref(struct ref_store *refs, const char *oldref,
2058 const char *newref, const char *logmsg)
2060 return refs->be->rename_ref(refs, oldref, newref, logmsg);
2063 int rename_ref(const char *oldref, const char *newref, const char *logmsg)
2065 return refs_rename_ref(get_main_ref_store(), oldref, newref, logmsg);
2068 int refs_copy_existing_ref(struct ref_store *refs, const char *oldref,
2069 const char *newref, const char *logmsg)
2071 return refs->be->copy_ref(refs, oldref, newref, logmsg);
2074 int copy_existing_ref(const char *oldref, const char *newref, const char *logmsg)
2076 return refs_copy_existing_ref(get_main_ref_store(), oldref, newref, logmsg);