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 unsigned char *sha1, 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 unsigned char *sha1, 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, unsigned char *sha1, int *flags)
224 if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, sha1, flags))
229 int read_ref_full(const char *refname, int resolve_flags, unsigned char *sha1, int *flags)
231 return refs_read_ref_full(get_main_ref_store(), refname,
232 resolve_flags, sha1, flags);
235 int read_ref(const char *refname, unsigned char *sha1)
237 return read_ref_full(refname, RESOLVE_REF_READING, sha1, NULL);
240 int ref_exists(const char *refname)
242 unsigned char sha1[20];
243 return !!resolve_ref_unsafe(refname, RESOLVE_REF_READING, sha1, NULL);
246 static int filter_refs(const char *refname, const struct object_id *oid,
247 int flags, void *data)
249 struct ref_filter *filter = (struct ref_filter *)data;
251 if (wildmatch(filter->pattern, refname, 0))
253 return filter->fn(refname, oid, flags, filter->cb_data);
256 enum peel_status peel_object(const unsigned char *name, unsigned char *sha1)
258 struct object *o = lookup_unknown_object(name);
260 if (o->type == OBJ_NONE) {
261 int type = sha1_object_info(name, NULL);
262 if (type < 0 || !object_as_type(o, type, 0))
266 if (o->type != OBJ_TAG)
269 o = deref_tag_noverify(o);
273 hashcpy(sha1, o->oid.hash);
277 struct warn_if_dangling_data {
280 const struct string_list *refnames;
284 static int warn_if_dangling_symref(const char *refname, const struct object_id *oid,
285 int flags, void *cb_data)
287 struct warn_if_dangling_data *d = cb_data;
288 const char *resolves_to;
289 struct object_id junk;
291 if (!(flags & REF_ISSYMREF))
294 resolves_to = resolve_ref_unsafe(refname, 0, junk.hash, NULL);
297 ? strcmp(resolves_to, d->refname)
298 : !string_list_has_string(d->refnames, resolves_to))) {
302 fprintf(d->fp, d->msg_fmt, refname);
307 void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname)
309 struct warn_if_dangling_data data;
312 data.refname = refname;
313 data.refnames = NULL;
314 data.msg_fmt = msg_fmt;
315 for_each_rawref(warn_if_dangling_symref, &data);
318 void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames)
320 struct warn_if_dangling_data data;
324 data.refnames = refnames;
325 data.msg_fmt = msg_fmt;
326 for_each_rawref(warn_if_dangling_symref, &data);
329 int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
331 return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data);
334 int for_each_tag_ref(each_ref_fn fn, void *cb_data)
336 return refs_for_each_tag_ref(get_main_ref_store(), fn, cb_data);
339 int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
341 return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data);
344 int for_each_branch_ref(each_ref_fn fn, void *cb_data)
346 return refs_for_each_branch_ref(get_main_ref_store(), fn, cb_data);
349 int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
351 return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data);
354 int for_each_remote_ref(each_ref_fn fn, void *cb_data)
356 return refs_for_each_remote_ref(get_main_ref_store(), fn, cb_data);
359 int head_ref_namespaced(each_ref_fn fn, void *cb_data)
361 struct strbuf buf = STRBUF_INIT;
363 struct object_id oid;
366 strbuf_addf(&buf, "%sHEAD", get_git_namespace());
367 if (!read_ref_full(buf.buf, RESOLVE_REF_READING, oid.hash, &flag))
368 ret = fn(buf.buf, &oid, flag, cb_data);
369 strbuf_release(&buf);
374 int for_each_glob_ref_in(each_ref_fn fn, const char *pattern,
375 const char *prefix, void *cb_data)
377 struct strbuf real_pattern = STRBUF_INIT;
378 struct ref_filter filter;
381 if (!prefix && !starts_with(pattern, "refs/"))
382 strbuf_addstr(&real_pattern, "refs/");
384 strbuf_addstr(&real_pattern, prefix);
385 strbuf_addstr(&real_pattern, pattern);
387 if (!has_glob_specials(pattern)) {
388 /* Append implied '/' '*' if not present. */
389 strbuf_complete(&real_pattern, '/');
390 /* No need to check for '*', there is none. */
391 strbuf_addch(&real_pattern, '*');
394 filter.pattern = real_pattern.buf;
396 filter.cb_data = cb_data;
397 ret = for_each_ref(filter_refs, &filter);
399 strbuf_release(&real_pattern);
403 int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data)
405 return for_each_glob_ref_in(fn, pattern, NULL, cb_data);
408 const char *prettify_refname(const char *name)
410 if (skip_prefix(name, "refs/heads/", &name) ||
411 skip_prefix(name, "refs/tags/", &name) ||
412 skip_prefix(name, "refs/remotes/", &name))
417 static const char *ref_rev_parse_rules[] = {
423 "refs/remotes/%.*s/HEAD",
427 int refname_match(const char *abbrev_name, const char *full_name)
430 const int abbrev_name_len = strlen(abbrev_name);
432 for (p = ref_rev_parse_rules; *p; p++) {
433 if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) {
442 * *string and *len will only be substituted, and *string returned (for
443 * later free()ing) if the string passed in is a magic short-hand form
446 static char *substitute_branch_name(const char **string, int *len)
448 struct strbuf buf = STRBUF_INIT;
449 int ret = interpret_branch_name(*string, *len, &buf, 0);
453 *string = strbuf_detach(&buf, &size);
455 return (char *)*string;
461 int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref)
463 char *last_branch = substitute_branch_name(&str, &len);
464 int refs_found = expand_ref(str, len, sha1, ref);
469 int expand_ref(const char *str, int len, unsigned char *sha1, char **ref)
473 struct strbuf fullref = STRBUF_INIT;
476 for (p = ref_rev_parse_rules; *p; p++) {
477 unsigned char sha1_from_ref[20];
478 unsigned char *this_result;
481 this_result = refs_found ? sha1_from_ref : sha1;
482 strbuf_reset(&fullref);
483 strbuf_addf(&fullref, *p, len, str);
484 r = resolve_ref_unsafe(fullref.buf, RESOLVE_REF_READING,
489 if (!warn_ambiguous_refs)
491 } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) {
492 warning("ignoring dangling symref %s.", fullref.buf);
493 } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) {
494 warning("ignoring broken ref %s.", fullref.buf);
497 strbuf_release(&fullref);
501 int dwim_log(const char *str, int len, unsigned char *sha1, char **log)
503 char *last_branch = substitute_branch_name(&str, &len);
506 struct strbuf path = STRBUF_INIT;
509 for (p = ref_rev_parse_rules; *p; p++) {
510 unsigned char hash[20];
511 const char *ref, *it;
514 strbuf_addf(&path, *p, len, str);
515 ref = resolve_ref_unsafe(path.buf, RESOLVE_REF_READING,
519 if (reflog_exists(path.buf))
521 else if (strcmp(ref, path.buf) && reflog_exists(ref))
529 if (!warn_ambiguous_refs)
532 strbuf_release(&path);
537 static int is_per_worktree_ref(const char *refname)
539 return !strcmp(refname, "HEAD") ||
540 starts_with(refname, "refs/bisect/");
543 static int is_pseudoref_syntax(const char *refname)
547 for (c = refname; *c; c++) {
548 if (!isupper(*c) && *c != '-' && *c != '_')
555 enum ref_type ref_type(const char *refname)
557 if (is_per_worktree_ref(refname))
558 return REF_TYPE_PER_WORKTREE;
559 if (is_pseudoref_syntax(refname))
560 return REF_TYPE_PSEUDOREF;
561 return REF_TYPE_NORMAL;
564 long get_files_ref_lock_timeout_ms(void)
566 static int configured = 0;
568 /* The default timeout is 100 ms: */
569 static int timeout_ms = 100;
572 git_config_get_int("core.filesreflocktimeout", &timeout_ms);
579 static int write_pseudoref(const char *pseudoref, const unsigned char *sha1,
580 const unsigned char *old_sha1, struct strbuf *err)
582 const char *filename;
584 static struct lock_file lock;
585 struct strbuf buf = STRBUF_INIT;
588 strbuf_addf(&buf, "%s\n", sha1_to_hex(sha1));
590 filename = git_path("%s", pseudoref);
591 fd = hold_lock_file_for_update_timeout(&lock, filename,
593 get_files_ref_lock_timeout_ms());
595 strbuf_addf(err, "could not open '%s' for writing: %s",
596 filename, strerror(errno));
601 unsigned char actual_old_sha1[20];
603 if (read_ref(pseudoref, actual_old_sha1))
604 die("could not read ref '%s'", pseudoref);
605 if (hashcmp(actual_old_sha1, old_sha1)) {
606 strbuf_addf(err, "unexpected sha1 when writing '%s'", pseudoref);
607 rollback_lock_file(&lock);
612 if (write_in_full(fd, buf.buf, buf.len) < 0) {
613 strbuf_addf(err, "could not write to '%s'", filename);
614 rollback_lock_file(&lock);
618 commit_lock_file(&lock);
621 strbuf_release(&buf);
625 static int delete_pseudoref(const char *pseudoref, const unsigned char *old_sha1)
627 static struct lock_file lock;
628 const char *filename;
630 filename = git_path("%s", pseudoref);
632 if (old_sha1 && !is_null_sha1(old_sha1)) {
634 unsigned char actual_old_sha1[20];
636 fd = hold_lock_file_for_update_timeout(
637 &lock, filename, LOCK_DIE_ON_ERROR,
638 get_files_ref_lock_timeout_ms());
640 die_errno(_("Could not open '%s' for writing"), filename);
641 if (read_ref(pseudoref, actual_old_sha1))
642 die("could not read ref '%s'", pseudoref);
643 if (hashcmp(actual_old_sha1, old_sha1)) {
644 warning("Unexpected sha1 when deleting %s", pseudoref);
645 rollback_lock_file(&lock);
650 rollback_lock_file(&lock);
658 int refs_delete_ref(struct ref_store *refs, const char *msg,
660 const unsigned char *old_sha1,
663 struct ref_transaction *transaction;
664 struct strbuf err = STRBUF_INIT;
666 if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
667 assert(refs == get_main_ref_store());
668 return delete_pseudoref(refname, old_sha1);
671 transaction = ref_store_transaction_begin(refs, &err);
673 ref_transaction_delete(transaction, refname, old_sha1,
675 ref_transaction_commit(transaction, &err)) {
676 error("%s", err.buf);
677 ref_transaction_free(transaction);
678 strbuf_release(&err);
681 ref_transaction_free(transaction);
682 strbuf_release(&err);
686 int delete_ref(const char *msg, const char *refname,
687 const unsigned char *old_sha1, unsigned int flags)
689 return refs_delete_ref(get_main_ref_store(), msg, refname,
693 int copy_reflog_msg(char *buf, const char *msg)
700 while ((c = *msg++)) {
701 if (wasspace && isspace(c))
703 wasspace = isspace(c);
708 while (buf < cp && isspace(cp[-1]))
714 int should_autocreate_reflog(const char *refname)
716 switch (log_all_ref_updates) {
717 case LOG_REFS_ALWAYS:
719 case LOG_REFS_NORMAL:
720 return starts_with(refname, "refs/heads/") ||
721 starts_with(refname, "refs/remotes/") ||
722 starts_with(refname, "refs/notes/") ||
723 !strcmp(refname, "HEAD");
729 int is_branch(const char *refname)
731 return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/");
734 struct read_ref_at_cb {
742 unsigned char osha1[20];
743 unsigned char nsha1[20];
747 timestamp_t *cutoff_time;
752 static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid,
753 const char *email, timestamp_t timestamp, int tz,
754 const char *message, void *cb_data)
756 struct read_ref_at_cb *cb = cb_data;
760 cb->date = timestamp;
762 if (timestamp <= cb->at_time || cb->cnt == 0) {
764 *cb->msg = xstrdup(message);
766 *cb->cutoff_time = timestamp;
770 *cb->cutoff_cnt = cb->reccnt - 1;
772 * we have not yet updated cb->[n|o]sha1 so they still
773 * hold the values for the previous record.
775 if (!is_null_sha1(cb->osha1)) {
776 hashcpy(cb->sha1, noid->hash);
777 if (hashcmp(cb->osha1, noid->hash))
778 warning("Log for ref %s has gap after %s.",
779 cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822)));
781 else if (cb->date == cb->at_time)
782 hashcpy(cb->sha1, noid->hash);
783 else if (hashcmp(noid->hash, cb->sha1))
784 warning("Log for ref %s unexpectedly ended on %s.",
785 cb->refname, show_date(cb->date, cb->tz,
786 DATE_MODE(RFC2822)));
787 hashcpy(cb->osha1, ooid->hash);
788 hashcpy(cb->nsha1, noid->hash);
792 hashcpy(cb->osha1, ooid->hash);
793 hashcpy(cb->nsha1, noid->hash);
799 static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid,
800 const char *email, timestamp_t timestamp,
801 int tz, const char *message, void *cb_data)
803 struct read_ref_at_cb *cb = cb_data;
806 *cb->msg = xstrdup(message);
808 *cb->cutoff_time = timestamp;
812 *cb->cutoff_cnt = cb->reccnt;
813 hashcpy(cb->sha1, ooid->hash);
814 if (is_null_sha1(cb->sha1))
815 hashcpy(cb->sha1, noid->hash);
816 /* We just want the first entry */
820 int read_ref_at(const char *refname, unsigned int flags, timestamp_t at_time, int cnt,
821 unsigned char *sha1, char **msg,
822 timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
824 struct read_ref_at_cb cb;
826 memset(&cb, 0, sizeof(cb));
827 cb.refname = refname;
828 cb.at_time = at_time;
831 cb.cutoff_time = cutoff_time;
832 cb.cutoff_tz = cutoff_tz;
833 cb.cutoff_cnt = cutoff_cnt;
836 for_each_reflog_ent_reverse(refname, read_ref_at_ent, &cb);
839 if (flags & GET_OID_QUIETLY)
842 die("Log for %s is empty.", refname);
847 for_each_reflog_ent(refname, read_ref_at_ent_oldest, &cb);
852 struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs,
855 struct ref_transaction *tr;
858 tr = xcalloc(1, sizeof(struct ref_transaction));
859 tr->ref_store = refs;
863 struct ref_transaction *ref_transaction_begin(struct strbuf *err)
865 return ref_store_transaction_begin(get_main_ref_store(), err);
868 void ref_transaction_free(struct ref_transaction *transaction)
875 switch (transaction->state) {
876 case REF_TRANSACTION_OPEN:
877 case REF_TRANSACTION_CLOSED:
880 case REF_TRANSACTION_PREPARED:
881 die("BUG: free called on a prepared reference transaction");
884 die("BUG: unexpected reference transaction state");
888 for (i = 0; i < transaction->nr; i++) {
889 free(transaction->updates[i]->msg);
890 free(transaction->updates[i]);
892 free(transaction->updates);
896 struct ref_update *ref_transaction_add_update(
897 struct ref_transaction *transaction,
898 const char *refname, unsigned int flags,
899 const unsigned char *new_sha1,
900 const unsigned char *old_sha1,
903 struct ref_update *update;
905 if (transaction->state != REF_TRANSACTION_OPEN)
906 die("BUG: update called for transaction that is not open");
908 if ((flags & REF_ISPRUNING) && !(flags & REF_NODEREF))
909 die("BUG: REF_ISPRUNING set without REF_NODEREF");
911 FLEX_ALLOC_STR(update, refname, refname);
912 ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc);
913 transaction->updates[transaction->nr++] = update;
915 update->flags = flags;
917 if (flags & REF_HAVE_NEW)
918 hashcpy(update->new_oid.hash, new_sha1);
919 if (flags & REF_HAVE_OLD)
920 hashcpy(update->old_oid.hash, old_sha1);
921 update->msg = xstrdup_or_null(msg);
925 int ref_transaction_update(struct ref_transaction *transaction,
927 const unsigned char *new_sha1,
928 const unsigned char *old_sha1,
929 unsigned int flags, const char *msg,
934 if ((new_sha1 && !is_null_sha1(new_sha1)) ?
935 check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) :
936 !refname_is_safe(refname)) {
937 strbuf_addf(err, "refusing to update ref with bad name '%s'",
942 flags |= (new_sha1 ? REF_HAVE_NEW : 0) | (old_sha1 ? REF_HAVE_OLD : 0);
944 ref_transaction_add_update(transaction, refname, flags,
945 new_sha1, old_sha1, msg);
949 int ref_transaction_create(struct ref_transaction *transaction,
951 const unsigned char *new_sha1,
952 unsigned int flags, const char *msg,
955 if (!new_sha1 || is_null_sha1(new_sha1))
956 die("BUG: create called without valid new_sha1");
957 return ref_transaction_update(transaction, refname, new_sha1,
958 null_sha1, flags, msg, err);
961 int ref_transaction_delete(struct ref_transaction *transaction,
963 const unsigned char *old_sha1,
964 unsigned int flags, const char *msg,
967 if (old_sha1 && is_null_sha1(old_sha1))
968 die("BUG: delete called with old_sha1 set to zeros");
969 return ref_transaction_update(transaction, refname,
974 int ref_transaction_verify(struct ref_transaction *transaction,
976 const unsigned char *old_sha1,
981 die("BUG: verify called with old_sha1 set to NULL");
982 return ref_transaction_update(transaction, refname,
987 int update_ref_oid(const char *msg, const char *refname,
988 const struct object_id *new_oid, const struct object_id *old_oid,
989 unsigned int flags, enum action_on_err onerr)
991 return update_ref(msg, refname, new_oid ? new_oid->hash : NULL,
992 old_oid ? old_oid->hash : NULL, flags, onerr);
995 int refs_update_ref(struct ref_store *refs, const char *msg,
996 const char *refname, const unsigned char *new_sha1,
997 const unsigned char *old_sha1, unsigned int flags,
998 enum action_on_err onerr)
1000 struct ref_transaction *t = NULL;
1001 struct strbuf err = STRBUF_INIT;
1004 if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
1005 assert(refs == get_main_ref_store());
1006 ret = write_pseudoref(refname, new_sha1, old_sha1, &err);
1008 t = ref_store_transaction_begin(refs, &err);
1010 ref_transaction_update(t, refname, new_sha1, old_sha1,
1011 flags, msg, &err) ||
1012 ref_transaction_commit(t, &err)) {
1014 ref_transaction_free(t);
1018 const char *str = "update_ref failed for ref '%s': %s";
1021 case UPDATE_REFS_MSG_ON_ERR:
1022 error(str, refname, err.buf);
1024 case UPDATE_REFS_DIE_ON_ERR:
1025 die(str, refname, err.buf);
1027 case UPDATE_REFS_QUIET_ON_ERR:
1030 strbuf_release(&err);
1033 strbuf_release(&err);
1035 ref_transaction_free(t);
1039 int update_ref(const char *msg, const char *refname,
1040 const unsigned char *new_sha1,
1041 const unsigned char *old_sha1,
1042 unsigned int flags, enum action_on_err onerr)
1044 return refs_update_ref(get_main_ref_store(), msg, refname, new_sha1,
1045 old_sha1, flags, onerr);
1048 char *shorten_unambiguous_ref(const char *refname, int strict)
1051 static char **scanf_fmts;
1052 static int nr_rules;
1054 struct strbuf resolved_buf = STRBUF_INIT;
1058 * Pre-generate scanf formats from ref_rev_parse_rules[].
1059 * Generate a format suitable for scanf from a
1060 * ref_rev_parse_rules rule by interpolating "%s" at the
1061 * location of the "%.*s".
1063 size_t total_len = 0;
1066 /* the rule list is NULL terminated, count them first */
1067 for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++)
1068 /* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */
1069 total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1;
1071 scanf_fmts = xmalloc(st_add(st_mult(sizeof(char *), nr_rules), total_len));
1074 for (i = 0; i < nr_rules; i++) {
1075 assert(offset < total_len);
1076 scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset;
1077 offset += snprintf(scanf_fmts[i], total_len - offset,
1078 ref_rev_parse_rules[i], 2, "%s") + 1;
1082 /* bail out if there are no rules */
1084 return xstrdup(refname);
1086 /* buffer for scanf result, at most refname must fit */
1087 short_name = xstrdup(refname);
1089 /* skip first rule, it will always match */
1090 for (i = nr_rules - 1; i > 0 ; --i) {
1092 int rules_to_fail = i;
1095 if (1 != sscanf(refname, scanf_fmts[i], short_name))
1098 short_name_len = strlen(short_name);
1101 * in strict mode, all (except the matched one) rules
1102 * must fail to resolve to a valid non-ambiguous ref
1105 rules_to_fail = nr_rules;
1108 * check if the short name resolves to a valid ref,
1109 * but use only rules prior to the matched one
1111 for (j = 0; j < rules_to_fail; j++) {
1112 const char *rule = ref_rev_parse_rules[j];
1114 /* skip matched rule */
1119 * the short name is ambiguous, if it resolves
1120 * (with this previous rule) to a valid ref
1121 * read_ref() returns 0 on success
1123 strbuf_reset(&resolved_buf);
1124 strbuf_addf(&resolved_buf, rule,
1125 short_name_len, short_name);
1126 if (ref_exists(resolved_buf.buf))
1131 * short name is non-ambiguous if all previous rules
1132 * haven't resolved to a valid ref
1134 if (j == rules_to_fail) {
1135 strbuf_release(&resolved_buf);
1140 strbuf_release(&resolved_buf);
1142 return xstrdup(refname);
1145 static struct string_list *hide_refs;
1147 int parse_hide_refs_config(const char *var, const char *value, const char *section)
1150 if (!strcmp("transfer.hiderefs", var) ||
1151 (!parse_config_key(var, section, NULL, NULL, &key) &&
1152 !strcmp(key, "hiderefs"))) {
1157 return config_error_nonbool(var);
1158 ref = xstrdup(value);
1160 while (len && ref[len - 1] == '/')
1163 hide_refs = xcalloc(1, sizeof(*hide_refs));
1164 hide_refs->strdup_strings = 1;
1166 string_list_append(hide_refs, ref);
1171 int ref_is_hidden(const char *refname, const char *refname_full)
1177 for (i = hide_refs->nr - 1; i >= 0; i--) {
1178 const char *match = hide_refs->items[i].string;
1179 const char *subject;
1183 if (*match == '!') {
1188 if (*match == '^') {
1189 subject = refname_full;
1195 /* refname can be NULL when namespaces are used. */
1197 skip_prefix(subject, match, &p) &&
1204 const char *find_descendant_ref(const char *dirname,
1205 const struct string_list *extras,
1206 const struct string_list *skip)
1214 * Look at the place where dirname would be inserted into
1215 * extras. If there is an entry at that position that starts
1216 * with dirname (remember, dirname includes the trailing
1217 * slash) and is not in skip, then we have a conflict.
1219 for (pos = string_list_find_insert_index(extras, dirname, 0);
1220 pos < extras->nr; pos++) {
1221 const char *extra_refname = extras->items[pos].string;
1223 if (!starts_with(extra_refname, dirname))
1226 if (!skip || !string_list_has_string(skip, extra_refname))
1227 return extra_refname;
1232 int refs_rename_ref_available(struct ref_store *refs,
1233 const char *old_refname,
1234 const char *new_refname)
1236 struct string_list skip = STRING_LIST_INIT_NODUP;
1237 struct strbuf err = STRBUF_INIT;
1240 string_list_insert(&skip, old_refname);
1241 ok = !refs_verify_refname_available(refs, new_refname,
1244 error("%s", err.buf);
1246 string_list_clear(&skip, 0);
1247 strbuf_release(&err);
1251 int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
1253 struct object_id oid;
1256 if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING,
1258 return fn("HEAD", &oid, flag, cb_data);
1263 int head_ref(each_ref_fn fn, void *cb_data)
1265 return refs_head_ref(get_main_ref_store(), fn, cb_data);
1268 struct ref_iterator *refs_ref_iterator_begin(
1269 struct ref_store *refs,
1270 const char *prefix, int trim, int flags)
1272 struct ref_iterator *iter;
1274 if (ref_paranoia < 0)
1275 ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0);
1277 flags |= DO_FOR_EACH_INCLUDE_BROKEN;
1279 iter = refs->be->iterator_begin(refs, prefix, flags);
1282 * `iterator_begin()` already takes care of prefix, but we
1283 * might need to do some trimming:
1286 iter = prefix_ref_iterator_begin(iter, "", trim);
1292 * Call fn for each reference in the specified submodule for which the
1293 * refname begins with prefix. If trim is non-zero, then trim that
1294 * many characters off the beginning of each refname before passing
1295 * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to
1296 * include broken references in the iteration. If fn ever returns a
1297 * non-zero value, stop the iteration and return that value;
1298 * otherwise, return 0.
1300 static int do_for_each_ref(struct ref_store *refs, const char *prefix,
1301 each_ref_fn fn, int trim, int flags, void *cb_data)
1303 struct ref_iterator *iter;
1308 iter = refs_ref_iterator_begin(refs, prefix, trim, flags);
1310 return do_for_each_ref_iterator(iter, fn, cb_data);
1313 int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
1315 return do_for_each_ref(refs, "", fn, 0, 0, cb_data);
1318 int for_each_ref(each_ref_fn fn, void *cb_data)
1320 return refs_for_each_ref(get_main_ref_store(), fn, cb_data);
1323 int refs_for_each_ref_in(struct ref_store *refs, const char *prefix,
1324 each_ref_fn fn, void *cb_data)
1326 return do_for_each_ref(refs, prefix, fn, strlen(prefix), 0, cb_data);
1329 int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data)
1331 return refs_for_each_ref_in(get_main_ref_store(), prefix, fn, cb_data);
1334 int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken)
1336 unsigned int flag = 0;
1339 flag = DO_FOR_EACH_INCLUDE_BROKEN;
1340 return do_for_each_ref(get_main_ref_store(),
1341 prefix, fn, 0, flag, cb_data);
1344 int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix,
1345 each_ref_fn fn, void *cb_data,
1346 unsigned int broken)
1348 unsigned int flag = 0;
1351 flag = DO_FOR_EACH_INCLUDE_BROKEN;
1352 return do_for_each_ref(refs, prefix, fn, 0, flag, cb_data);
1355 int for_each_replace_ref(each_ref_fn fn, void *cb_data)
1357 return do_for_each_ref(get_main_ref_store(),
1358 git_replace_ref_base, fn,
1359 strlen(git_replace_ref_base),
1360 DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
1363 int for_each_namespaced_ref(each_ref_fn fn, void *cb_data)
1365 struct strbuf buf = STRBUF_INIT;
1367 strbuf_addf(&buf, "%srefs/", get_git_namespace());
1368 ret = do_for_each_ref(get_main_ref_store(),
1369 buf.buf, fn, 0, 0, cb_data);
1370 strbuf_release(&buf);
1374 int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
1376 return do_for_each_ref(refs, "", fn, 0,
1377 DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
1380 int for_each_rawref(each_ref_fn fn, void *cb_data)
1382 return refs_for_each_rawref(get_main_ref_store(), fn, cb_data);
1385 int refs_read_raw_ref(struct ref_store *ref_store,
1386 const char *refname, unsigned char *sha1,
1387 struct strbuf *referent, unsigned int *type)
1389 return ref_store->be->read_raw_ref(ref_store, refname, sha1, referent, type);
1392 /* This function needs to return a meaningful errno on failure */
1393 const char *refs_resolve_ref_unsafe(struct ref_store *refs,
1394 const char *refname,
1396 unsigned char *sha1, int *flags)
1398 static struct strbuf sb_refname = STRBUF_INIT;
1403 flags = &unused_flags;
1407 if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
1408 if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
1409 !refname_is_safe(refname)) {
1415 * dwim_ref() uses REF_ISBROKEN to distinguish between
1416 * missing refs and refs that were present but invalid,
1417 * to complain about the latter to stderr.
1419 * We don't know whether the ref exists, so don't set
1422 *flags |= REF_BAD_NAME;
1425 for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) {
1426 unsigned int read_flags = 0;
1428 if (refs_read_raw_ref(refs, refname,
1429 sha1, &sb_refname, &read_flags)) {
1430 *flags |= read_flags;
1431 if (errno != ENOENT || (resolve_flags & RESOLVE_REF_READING))
1434 if (*flags & REF_BAD_NAME)
1435 *flags |= REF_ISBROKEN;
1439 *flags |= read_flags;
1441 if (!(read_flags & REF_ISSYMREF)) {
1442 if (*flags & REF_BAD_NAME) {
1444 *flags |= REF_ISBROKEN;
1449 refname = sb_refname.buf;
1450 if (resolve_flags & RESOLVE_REF_NO_RECURSE) {
1454 if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
1455 if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
1456 !refname_is_safe(refname)) {
1461 *flags |= REF_ISBROKEN | REF_BAD_NAME;
1469 /* backend functions */
1470 int refs_init_db(struct strbuf *err)
1472 struct ref_store *refs = get_main_ref_store();
1474 return refs->be->init_db(refs, err);
1477 const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
1478 unsigned char *sha1, int *flags)
1480 return refs_resolve_ref_unsafe(get_main_ref_store(), refname,
1481 resolve_flags, sha1, flags);
1484 int resolve_gitlink_ref(const char *submodule, const char *refname,
1485 unsigned char *sha1)
1487 struct ref_store *refs;
1490 refs = get_submodule_ref_store(submodule);
1495 if (!refs_resolve_ref_unsafe(refs, refname, 0, sha1, &flags) ||
1501 struct ref_store_hash_entry
1503 struct hashmap_entry ent; /* must be the first member! */
1505 struct ref_store *refs;
1507 /* NUL-terminated identifier of the ref store: */
1508 char name[FLEX_ARRAY];
1511 static int ref_store_hash_cmp(const void *unused_cmp_data,
1512 const void *entry, const void *entry_or_key,
1513 const void *keydata)
1515 const struct ref_store_hash_entry *e1 = entry, *e2 = entry_or_key;
1516 const char *name = keydata ? keydata : e2->name;
1518 return strcmp(e1->name, name);
1521 static struct ref_store_hash_entry *alloc_ref_store_hash_entry(
1522 const char *name, struct ref_store *refs)
1524 struct ref_store_hash_entry *entry;
1526 FLEX_ALLOC_STR(entry, name, name);
1527 hashmap_entry_init(entry, strhash(name));
1532 /* A pointer to the ref_store for the main repository: */
1533 static struct ref_store *main_ref_store;
1535 /* A hashmap of ref_stores, stored by submodule name: */
1536 static struct hashmap submodule_ref_stores;
1538 /* A hashmap of ref_stores, stored by worktree id: */
1539 static struct hashmap worktree_ref_stores;
1542 * Look up a ref store by name. If that ref_store hasn't been
1543 * registered yet, return NULL.
1545 static struct ref_store *lookup_ref_store_map(struct hashmap *map,
1548 struct ref_store_hash_entry *entry;
1550 if (!map->tablesize)
1551 /* It's initialized on demand in register_ref_store(). */
1554 entry = hashmap_get_from_hash(map, strhash(name), name);
1555 return entry ? entry->refs : NULL;
1559 * Create, record, and return a ref_store instance for the specified
1562 static struct ref_store *ref_store_init(const char *gitdir,
1565 const char *be_name = "files";
1566 struct ref_storage_be *be = find_ref_storage_backend(be_name);
1567 struct ref_store *refs;
1570 die("BUG: reference backend %s is unknown", be_name);
1572 refs = be->init(gitdir, flags);
1576 struct ref_store *get_main_ref_store(void)
1579 return main_ref_store;
1581 main_ref_store = ref_store_init(get_git_dir(), REF_STORE_ALL_CAPS);
1582 return main_ref_store;
1586 * Associate a ref store with a name. It is a fatal error to call this
1587 * function twice for the same name.
1589 static void register_ref_store_map(struct hashmap *map,
1591 struct ref_store *refs,
1594 if (!map->tablesize)
1595 hashmap_init(map, ref_store_hash_cmp, NULL, 0);
1597 if (hashmap_put(map, alloc_ref_store_hash_entry(name, refs)))
1598 die("BUG: %s ref_store '%s' initialized twice", type, name);
1601 struct ref_store *get_submodule_ref_store(const char *submodule)
1603 struct strbuf submodule_sb = STRBUF_INIT;
1604 struct ref_store *refs;
1605 char *to_free = NULL;
1611 len = strlen(submodule);
1612 while (len && is_dir_sep(submodule[len - 1]))
1618 /* We need to strip off one or more trailing slashes */
1619 submodule = to_free = xmemdupz(submodule, len);
1621 refs = lookup_ref_store_map(&submodule_ref_stores, submodule);
1625 strbuf_addstr(&submodule_sb, submodule);
1626 if (!is_nonbare_repository_dir(&submodule_sb))
1629 if (submodule_to_gitdir(&submodule_sb, submodule))
1632 /* assume that add_submodule_odb() has been called */
1633 refs = ref_store_init(submodule_sb.buf,
1634 REF_STORE_READ | REF_STORE_ODB);
1635 register_ref_store_map(&submodule_ref_stores, "submodule",
1639 strbuf_release(&submodule_sb);
1645 struct ref_store *get_worktree_ref_store(const struct worktree *wt)
1647 struct ref_store *refs;
1651 return get_main_ref_store();
1653 id = wt->id ? wt->id : "/";
1654 refs = lookup_ref_store_map(&worktree_ref_stores, id);
1659 refs = ref_store_init(git_common_path("worktrees/%s", wt->id),
1660 REF_STORE_ALL_CAPS);
1662 refs = ref_store_init(get_git_common_dir(),
1663 REF_STORE_ALL_CAPS);
1666 register_ref_store_map(&worktree_ref_stores, "worktree",
1671 void base_ref_store_init(struct ref_store *refs,
1672 const struct ref_storage_be *be)
1677 /* backend functions */
1678 int refs_pack_refs(struct ref_store *refs, unsigned int flags)
1680 return refs->be->pack_refs(refs, flags);
1683 int refs_peel_ref(struct ref_store *refs, const char *refname,
1684 unsigned char *sha1)
1686 return refs->be->peel_ref(refs, refname, sha1);
1689 int peel_ref(const char *refname, unsigned char *sha1)
1691 return refs_peel_ref(get_main_ref_store(), refname, sha1);
1694 int refs_create_symref(struct ref_store *refs,
1695 const char *ref_target,
1696 const char *refs_heads_master,
1699 return refs->be->create_symref(refs, ref_target,
1704 int create_symref(const char *ref_target, const char *refs_heads_master,
1707 return refs_create_symref(get_main_ref_store(), ref_target,
1708 refs_heads_master, logmsg);
1711 int ref_update_reject_duplicates(struct string_list *refnames,
1714 size_t i, n = refnames->nr;
1718 for (i = 1; i < n; i++) {
1719 int cmp = strcmp(refnames->items[i - 1].string,
1720 refnames->items[i].string);
1724 "multiple updates for ref '%s' not allowed.",
1725 refnames->items[i].string);
1727 } else if (cmp > 0) {
1728 die("BUG: ref_update_reject_duplicates() received unsorted list");
1734 int ref_transaction_prepare(struct ref_transaction *transaction,
1737 struct ref_store *refs = transaction->ref_store;
1739 switch (transaction->state) {
1740 case REF_TRANSACTION_OPEN:
1743 case REF_TRANSACTION_PREPARED:
1744 die("BUG: prepare called twice on reference transaction");
1746 case REF_TRANSACTION_CLOSED:
1747 die("BUG: prepare called on a closed reference transaction");
1750 die("BUG: unexpected reference transaction state");
1754 if (getenv(GIT_QUARANTINE_ENVIRONMENT)) {
1756 _("ref updates forbidden inside quarantine environment"));
1760 return refs->be->transaction_prepare(refs, transaction, err);
1763 int ref_transaction_abort(struct ref_transaction *transaction,
1766 struct ref_store *refs = transaction->ref_store;
1769 switch (transaction->state) {
1770 case REF_TRANSACTION_OPEN:
1771 /* No need to abort explicitly. */
1773 case REF_TRANSACTION_PREPARED:
1774 ret = refs->be->transaction_abort(refs, transaction, err);
1776 case REF_TRANSACTION_CLOSED:
1777 die("BUG: abort called on a closed reference transaction");
1780 die("BUG: unexpected reference transaction state");
1784 ref_transaction_free(transaction);
1788 int ref_transaction_commit(struct ref_transaction *transaction,
1791 struct ref_store *refs = transaction->ref_store;
1794 switch (transaction->state) {
1795 case REF_TRANSACTION_OPEN:
1796 /* Need to prepare first. */
1797 ret = ref_transaction_prepare(transaction, err);
1801 case REF_TRANSACTION_PREPARED:
1802 /* Fall through to finish. */
1804 case REF_TRANSACTION_CLOSED:
1805 die("BUG: commit called on a closed reference transaction");
1808 die("BUG: unexpected reference transaction state");
1812 return refs->be->transaction_finish(refs, transaction, err);
1815 int refs_verify_refname_available(struct ref_store *refs,
1816 const char *refname,
1817 const struct string_list *extras,
1818 const struct string_list *skip,
1822 const char *extra_refname;
1823 struct strbuf dirname = STRBUF_INIT;
1824 struct strbuf referent = STRBUF_INIT;
1825 struct object_id oid;
1827 struct ref_iterator *iter;
1832 * For the sake of comments in this function, suppose that
1833 * refname is "refs/foo/bar".
1838 strbuf_grow(&dirname, strlen(refname) + 1);
1839 for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) {
1840 /* Expand dirname to the new prefix, not including the trailing slash: */
1841 strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len);
1844 * We are still at a leading dir of the refname (e.g.,
1845 * "refs/foo"; if there is a reference with that name,
1846 * it is a conflict, *unless* it is in skip.
1848 if (skip && string_list_has_string(skip, dirname.buf))
1851 if (!refs_read_raw_ref(refs, dirname.buf, oid.hash, &referent, &type)) {
1852 strbuf_addf(err, "'%s' exists; cannot create '%s'",
1853 dirname.buf, refname);
1857 if (extras && string_list_has_string(extras, dirname.buf)) {
1858 strbuf_addf(err, "cannot process '%s' and '%s' at the same time",
1859 refname, dirname.buf);
1865 * We are at the leaf of our refname (e.g., "refs/foo/bar").
1866 * There is no point in searching for a reference with that
1867 * name, because a refname isn't considered to conflict with
1868 * itself. But we still need to check for references whose
1869 * names are in the "refs/foo/bar/" namespace, because they
1872 strbuf_addstr(&dirname, refname + dirname.len);
1873 strbuf_addch(&dirname, '/');
1875 iter = refs_ref_iterator_begin(refs, dirname.buf, 0,
1876 DO_FOR_EACH_INCLUDE_BROKEN);
1877 while ((ok = ref_iterator_advance(iter)) == ITER_OK) {
1879 string_list_has_string(skip, iter->refname))
1882 strbuf_addf(err, "'%s' exists; cannot create '%s'",
1883 iter->refname, refname);
1884 ref_iterator_abort(iter);
1888 if (ok != ITER_DONE)
1889 die("BUG: error while iterating over references");
1891 extra_refname = find_descendant_ref(dirname.buf, extras, skip);
1893 strbuf_addf(err, "cannot process '%s' and '%s' at the same time",
1894 refname, extra_refname);
1899 strbuf_release(&referent);
1900 strbuf_release(&dirname);
1904 int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data)
1906 struct ref_iterator *iter;
1908 iter = refs->be->reflog_iterator_begin(refs);
1910 return do_for_each_ref_iterator(iter, fn, cb_data);
1913 int for_each_reflog(each_ref_fn fn, void *cb_data)
1915 return refs_for_each_reflog(get_main_ref_store(), fn, cb_data);
1918 int refs_for_each_reflog_ent_reverse(struct ref_store *refs,
1919 const char *refname,
1920 each_reflog_ent_fn fn,
1923 return refs->be->for_each_reflog_ent_reverse(refs, refname,
1927 int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn,
1930 return refs_for_each_reflog_ent_reverse(get_main_ref_store(),
1931 refname, fn, cb_data);
1934 int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname,
1935 each_reflog_ent_fn fn, void *cb_data)
1937 return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data);
1940 int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn,
1943 return refs_for_each_reflog_ent(get_main_ref_store(), refname,
1947 int refs_reflog_exists(struct ref_store *refs, const char *refname)
1949 return refs->be->reflog_exists(refs, refname);
1952 int reflog_exists(const char *refname)
1954 return refs_reflog_exists(get_main_ref_store(), refname);
1957 int refs_create_reflog(struct ref_store *refs, const char *refname,
1958 int force_create, struct strbuf *err)
1960 return refs->be->create_reflog(refs, refname, force_create, err);
1963 int safe_create_reflog(const char *refname, int force_create,
1966 return refs_create_reflog(get_main_ref_store(), refname,
1970 int refs_delete_reflog(struct ref_store *refs, const char *refname)
1972 return refs->be->delete_reflog(refs, refname);
1975 int delete_reflog(const char *refname)
1977 return refs_delete_reflog(get_main_ref_store(), refname);
1980 int refs_reflog_expire(struct ref_store *refs,
1981 const char *refname, const unsigned char *sha1,
1983 reflog_expiry_prepare_fn prepare_fn,
1984 reflog_expiry_should_prune_fn should_prune_fn,
1985 reflog_expiry_cleanup_fn cleanup_fn,
1986 void *policy_cb_data)
1988 return refs->be->reflog_expire(refs, refname, sha1, flags,
1989 prepare_fn, should_prune_fn,
1990 cleanup_fn, policy_cb_data);
1993 int reflog_expire(const char *refname, const unsigned char *sha1,
1995 reflog_expiry_prepare_fn prepare_fn,
1996 reflog_expiry_should_prune_fn should_prune_fn,
1997 reflog_expiry_cleanup_fn cleanup_fn,
1998 void *policy_cb_data)
2000 return refs_reflog_expire(get_main_ref_store(),
2001 refname, sha1, flags,
2002 prepare_fn, should_prune_fn,
2003 cleanup_fn, policy_cb_data);
2006 int initial_ref_transaction_commit(struct ref_transaction *transaction,
2009 struct ref_store *refs = transaction->ref_store;
2011 return refs->be->initial_transaction_commit(refs, transaction, err);
2014 int refs_delete_refs(struct ref_store *refs, const char *msg,
2015 struct string_list *refnames, unsigned int flags)
2017 return refs->be->delete_refs(refs, msg, refnames, flags);
2020 int delete_refs(const char *msg, struct string_list *refnames,
2023 return refs_delete_refs(get_main_ref_store(), msg, refnames, flags);
2026 int refs_rename_ref(struct ref_store *refs, const char *oldref,
2027 const char *newref, const char *logmsg)
2029 return refs->be->rename_ref(refs, oldref, newref, logmsg);
2032 int rename_ref(const char *oldref, const char *newref, const char *logmsg)
2034 return refs_rename_ref(get_main_ref_store(), oldref, newref, logmsg);