*/
#include "cache.h"
+#include "config.h"
+#include "hashmap.h"
#include "lockfile.h"
+#include "iterator.h"
#include "refs.h"
#include "refs/refs-internal.h"
#include "object.h"
#include "tag.h"
+#include "submodule.h"
+#include "worktree.h"
+
+/*
+ * List of all available backends
+ */
+static struct ref_storage_be *refs_backends = &refs_be_files;
+
+static struct ref_storage_be *find_ref_storage_backend(const char *name)
+{
+ struct ref_storage_be *be;
+ for (be = refs_backends; be; be = be->next)
+ if (!strcmp(be->name, name))
+ return be;
+ return NULL;
+}
+
+int ref_storage_backend_exists(const char *name)
+{
+ return find_ref_storage_backend(name) != NULL;
+}
/*
* How to handle various characters in refnames:
return 1;
}
+char *refs_resolve_refdup(struct ref_store *refs,
+ const char *refname, int resolve_flags,
+ unsigned char *sha1, int *flags)
+{
+ const char *result;
+
+ result = refs_resolve_ref_unsafe(refs, refname, resolve_flags,
+ sha1, flags);
+ return xstrdup_or_null(result);
+}
+
char *resolve_refdup(const char *refname, int resolve_flags,
unsigned char *sha1, int *flags)
{
- return xstrdup_or_null(resolve_ref_unsafe(refname, resolve_flags,
- sha1, flags));
+ return refs_resolve_refdup(get_main_ref_store(),
+ refname, resolve_flags,
+ sha1, flags);
}
/* The argument to filter_refs */
void *cb_data;
};
-int read_ref_full(const char *refname, int resolve_flags, unsigned char *sha1, int *flags)
+int refs_read_ref_full(struct ref_store *refs, const char *refname,
+ int resolve_flags, unsigned char *sha1, int *flags)
{
- if (resolve_ref_unsafe(refname, resolve_flags, sha1, flags))
+ if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, sha1, flags))
return 0;
return -1;
}
+int read_ref_full(const char *refname, int resolve_flags, unsigned char *sha1, int *flags)
+{
+ return refs_read_ref_full(get_main_ref_store(), refname,
+ resolve_flags, sha1, flags);
+}
+
int read_ref(const char *refname, unsigned char *sha1)
{
return read_ref_full(refname, RESOLVE_REF_READING, sha1, NULL);
{
struct ref_filter *filter = (struct ref_filter *)data;
- if (wildmatch(filter->pattern, refname, 0, NULL))
+ if (wildmatch(filter->pattern, refname, 0))
return 0;
return filter->fn(refname, oid, flags, filter->cb_data);
}
for_each_rawref(warn_if_dangling_symref, &data);
}
+int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
+{
+ return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data);
+}
+
int for_each_tag_ref(each_ref_fn fn, void *cb_data)
{
- return for_each_ref_in("refs/tags/", fn, cb_data);
+ return refs_for_each_tag_ref(get_main_ref_store(), fn, cb_data);
}
int for_each_tag_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
{
- return for_each_ref_in_submodule(submodule, "refs/tags/", fn, cb_data);
+ return refs_for_each_tag_ref(get_submodule_ref_store(submodule),
+ fn, cb_data);
+}
+
+int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
+{
+ return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data);
}
int for_each_branch_ref(each_ref_fn fn, void *cb_data)
{
- return for_each_ref_in("refs/heads/", fn, cb_data);
+ return refs_for_each_branch_ref(get_main_ref_store(), fn, cb_data);
}
int for_each_branch_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
{
- return for_each_ref_in_submodule(submodule, "refs/heads/", fn, cb_data);
+ return refs_for_each_branch_ref(get_submodule_ref_store(submodule),
+ fn, cb_data);
+}
+
+int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
+{
+ return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data);
}
int for_each_remote_ref(each_ref_fn fn, void *cb_data)
{
- return for_each_ref_in("refs/remotes/", fn, cb_data);
+ return refs_for_each_remote_ref(get_main_ref_store(), fn, cb_data);
}
int for_each_remote_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
{
- return for_each_ref_in_submodule(submodule, "refs/remotes/", fn, cb_data);
+ return refs_for_each_remote_ref(get_submodule_ref_store(submodule),
+ fn, cb_data);
}
int head_ref_namespaced(each_ref_fn fn, void *cb_data)
const char *prettify_refname(const char *name)
{
- return name + (
- starts_with(name, "refs/heads/") ? 11 :
- starts_with(name, "refs/tags/") ? 10 :
- starts_with(name, "refs/remotes/") ? 13 :
- 0);
+ if (skip_prefix(name, "refs/heads/", &name) ||
+ skip_prefix(name, "refs/tags/", &name) ||
+ skip_prefix(name, "refs/remotes/", &name))
+ ; /* nothing */
+ return name;
}
static const char *ref_rev_parse_rules[] = {
static char *substitute_branch_name(const char **string, int *len)
{
struct strbuf buf = STRBUF_INIT;
- int ret = interpret_branch_name(*string, *len, &buf);
+ int ret = interpret_branch_name(*string, *len, &buf, 0);
if (ret == *len) {
size_t size;
int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref)
{
char *last_branch = substitute_branch_name(&str, &len);
+ int refs_found = expand_ref(str, len, sha1, ref);
+ free(last_branch);
+ return refs_found;
+}
+
+int expand_ref(const char *str, int len, unsigned char *sha1, char **ref)
+{
const char **p, *r;
int refs_found = 0;
+ struct strbuf fullref = STRBUF_INIT;
*ref = NULL;
for (p = ref_rev_parse_rules; *p; p++) {
- char fullref[PATH_MAX];
unsigned char sha1_from_ref[20];
unsigned char *this_result;
int flag;
this_result = refs_found ? sha1_from_ref : sha1;
- mksnpath(fullref, sizeof(fullref), *p, len, str);
- r = resolve_ref_unsafe(fullref, RESOLVE_REF_READING,
+ strbuf_reset(&fullref);
+ strbuf_addf(&fullref, *p, len, str);
+ r = resolve_ref_unsafe(fullref.buf, RESOLVE_REF_READING,
this_result, &flag);
if (r) {
if (!refs_found++)
*ref = xstrdup(r);
if (!warn_ambiguous_refs)
break;
- } else if ((flag & REF_ISSYMREF) && strcmp(fullref, "HEAD")) {
- warning("ignoring dangling symref %s.", fullref);
- } else if ((flag & REF_ISBROKEN) && strchr(fullref, '/')) {
- warning("ignoring broken ref %s.", fullref);
+ } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) {
+ warning("ignoring dangling symref %s.", fullref.buf);
+ } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) {
+ warning("ignoring broken ref %s.", fullref.buf);
}
}
- free(last_branch);
+ strbuf_release(&fullref);
return refs_found;
}
char *last_branch = substitute_branch_name(&str, &len);
const char **p;
int logs_found = 0;
+ struct strbuf path = STRBUF_INIT;
*log = NULL;
for (p = ref_rev_parse_rules; *p; p++) {
unsigned char hash[20];
- char path[PATH_MAX];
const char *ref, *it;
- mksnpath(path, sizeof(path), *p, len, str);
- ref = resolve_ref_unsafe(path, RESOLVE_REF_READING,
+ strbuf_reset(&path);
+ strbuf_addf(&path, *p, len, str);
+ ref = resolve_ref_unsafe(path.buf, RESOLVE_REF_READING,
hash, NULL);
if (!ref)
continue;
- if (reflog_exists(path))
- it = path;
- else if (strcmp(ref, path) && reflog_exists(ref))
+ if (reflog_exists(path.buf))
+ it = path.buf;
+ else if (strcmp(ref, path.buf) && reflog_exists(ref))
it = ref;
else
continue;
if (!warn_ambiguous_refs)
break;
}
+ strbuf_release(&path);
free(last_branch);
return logs_found;
}
}
}
- if (write_in_full(fd, buf.buf, buf.len) != buf.len) {
+ if (write_in_full(fd, buf.buf, buf.len) < 0) {
strbuf_addf(err, "could not write to '%s'", filename);
rollback_lock_file(&lock);
goto done;
return 0;
}
-int delete_ref(const char *refname, const unsigned char *old_sha1,
- unsigned int flags)
+int refs_delete_ref(struct ref_store *refs, const char *msg,
+ const char *refname,
+ const unsigned char *old_sha1,
+ unsigned int flags)
{
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
- if (ref_type(refname) == REF_TYPE_PSEUDOREF)
+ if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
+ assert(refs == get_main_ref_store());
return delete_pseudoref(refname, old_sha1);
+ }
- transaction = ref_transaction_begin(&err);
+ transaction = ref_store_transaction_begin(refs, &err);
if (!transaction ||
ref_transaction_delete(transaction, refname, old_sha1,
- flags, NULL, &err) ||
+ flags, msg, &err) ||
ref_transaction_commit(transaction, &err)) {
error("%s", err.buf);
ref_transaction_free(transaction);
return 0;
}
+int delete_ref(const char *msg, const char *refname,
+ const unsigned char *old_sha1, unsigned int flags)
+{
+ return refs_delete_ref(get_main_ref_store(), msg, refname,
+ old_sha1, flags);
+}
+
int copy_reflog_msg(char *buf, const char *msg)
{
char *cp = buf;
int should_autocreate_reflog(const char *refname)
{
- if (!log_all_ref_updates)
+ switch (log_all_ref_updates) {
+ case LOG_REFS_ALWAYS:
+ return 1;
+ case LOG_REFS_NORMAL:
+ return starts_with(refname, "refs/heads/") ||
+ starts_with(refname, "refs/remotes/") ||
+ starts_with(refname, "refs/notes/") ||
+ !strcmp(refname, "HEAD");
+ default:
return 0;
- return starts_with(refname, "refs/heads/") ||
- starts_with(refname, "refs/remotes/") ||
- starts_with(refname, "refs/notes/") ||
- !strcmp(refname, "HEAD");
+ }
}
int is_branch(const char *refname)
struct read_ref_at_cb {
const char *refname;
- unsigned long at_time;
+ timestamp_t at_time;
int cnt;
int reccnt;
unsigned char *sha1;
unsigned char osha1[20];
unsigned char nsha1[20];
int tz;
- unsigned long date;
+ timestamp_t date;
char **msg;
- unsigned long *cutoff_time;
+ timestamp_t *cutoff_time;
int *cutoff_tz;
int *cutoff_cnt;
};
-static int read_ref_at_ent(unsigned char *osha1, unsigned char *nsha1,
- const char *email, unsigned long timestamp, int tz,
+static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid,
+ const char *email, timestamp_t timestamp, int tz,
const char *message, void *cb_data)
{
struct read_ref_at_cb *cb = cb_data;
* hold the values for the previous record.
*/
if (!is_null_sha1(cb->osha1)) {
- hashcpy(cb->sha1, nsha1);
- if (hashcmp(cb->osha1, nsha1))
+ hashcpy(cb->sha1, noid->hash);
+ if (hashcmp(cb->osha1, noid->hash))
warning("Log for ref %s has gap after %s.",
cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822)));
}
else if (cb->date == cb->at_time)
- hashcpy(cb->sha1, nsha1);
- else if (hashcmp(nsha1, cb->sha1))
+ hashcpy(cb->sha1, noid->hash);
+ else if (hashcmp(noid->hash, cb->sha1))
warning("Log for ref %s unexpectedly ended on %s.",
cb->refname, show_date(cb->date, cb->tz,
DATE_MODE(RFC2822)));
- hashcpy(cb->osha1, osha1);
- hashcpy(cb->nsha1, nsha1);
+ hashcpy(cb->osha1, ooid->hash);
+ hashcpy(cb->nsha1, noid->hash);
cb->found_it = 1;
return 1;
}
- hashcpy(cb->osha1, osha1);
- hashcpy(cb->nsha1, nsha1);
+ hashcpy(cb->osha1, ooid->hash);
+ hashcpy(cb->nsha1, noid->hash);
if (cb->cnt > 0)
cb->cnt--;
return 0;
}
-static int read_ref_at_ent_oldest(unsigned char *osha1, unsigned char *nsha1,
- const char *email, unsigned long timestamp,
+static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid,
+ const char *email, timestamp_t timestamp,
int tz, const char *message, void *cb_data)
{
struct read_ref_at_cb *cb = cb_data;
*cb->cutoff_tz = tz;
if (cb->cutoff_cnt)
*cb->cutoff_cnt = cb->reccnt;
- hashcpy(cb->sha1, osha1);
+ hashcpy(cb->sha1, ooid->hash);
if (is_null_sha1(cb->sha1))
- hashcpy(cb->sha1, nsha1);
+ hashcpy(cb->sha1, noid->hash);
/* We just want the first entry */
return 1;
}
-int read_ref_at(const char *refname, unsigned int flags, unsigned long at_time, int cnt,
+int read_ref_at(const char *refname, unsigned int flags, timestamp_t at_time, int cnt,
unsigned char *sha1, char **msg,
- unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
+ timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
{
struct read_ref_at_cb cb;
return 1;
}
-struct ref_transaction *ref_transaction_begin(struct strbuf *err)
+struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs,
+ struct strbuf *err)
{
+ struct ref_transaction *tr;
assert(err);
- return xcalloc(1, sizeof(struct ref_transaction));
+ tr = xcalloc(1, sizeof(struct ref_transaction));
+ tr->ref_store = refs;
+ return tr;
+}
+
+struct ref_transaction *ref_transaction_begin(struct strbuf *err)
+{
+ return ref_store_transaction_begin(get_main_ref_store(), err);
}
void ref_transaction_free(struct ref_transaction *transaction)
{
- int i;
+ size_t i;
if (!transaction)
return;
+ switch (transaction->state) {
+ case REF_TRANSACTION_OPEN:
+ case REF_TRANSACTION_CLOSED:
+ /* OK */
+ break;
+ case REF_TRANSACTION_PREPARED:
+ die("BUG: free called on a prepared reference transaction");
+ break;
+ default:
+ die("BUG: unexpected reference transaction state");
+ break;
+ }
+
for (i = 0; i < transaction->nr; i++) {
free(transaction->updates[i]->msg);
free(transaction->updates[i]);
update->flags = flags;
if (flags & REF_HAVE_NEW)
- hashcpy(update->new_sha1, new_sha1);
+ hashcpy(update->new_oid.hash, new_sha1);
if (flags & REF_HAVE_OLD)
- hashcpy(update->old_sha1, old_sha1);
+ hashcpy(update->old_oid.hash, old_sha1);
update->msg = xstrdup_or_null(msg);
return update;
}
return -1;
}
+ flags &= REF_TRANSACTION_UPDATE_ALLOWED_FLAGS;
+
flags |= (new_sha1 ? REF_HAVE_NEW : 0) | (old_sha1 ? REF_HAVE_OLD : 0);
ref_transaction_add_update(transaction, refname, flags,
flags, NULL, err);
}
-int update_ref(const char *msg, const char *refname,
- const unsigned char *new_sha1, const unsigned char *old_sha1,
+int update_ref_oid(const char *msg, const char *refname,
+ const struct object_id *new_oid, const struct object_id *old_oid,
unsigned int flags, enum action_on_err onerr)
+{
+ return update_ref(msg, refname, new_oid ? new_oid->hash : NULL,
+ old_oid ? old_oid->hash : NULL, flags, onerr);
+}
+
+int refs_update_ref(struct ref_store *refs, const char *msg,
+ const char *refname, const unsigned char *new_sha1,
+ const unsigned char *old_sha1, unsigned int flags,
+ enum action_on_err onerr)
{
struct ref_transaction *t = NULL;
struct strbuf err = STRBUF_INIT;
int ret = 0;
if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
+ assert(refs == get_main_ref_store());
ret = write_pseudoref(refname, new_sha1, old_sha1, &err);
} else {
- t = ref_transaction_begin(&err);
+ t = ref_store_transaction_begin(refs, &err);
if (!t ||
ref_transaction_update(t, refname, new_sha1, old_sha1,
flags, msg, &err) ||
return 0;
}
+int update_ref(const char *msg, const char *refname,
+ const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ unsigned int flags, enum action_on_err onerr)
+{
+ return refs_update_ref(get_main_ref_store(), msg, refname, new_sha1,
+ old_sha1, flags, onerr);
+}
+
char *shorten_unambiguous_ref(const char *refname, int strict)
{
int i;
static char **scanf_fmts;
static int nr_rules;
char *short_name;
+ struct strbuf resolved_buf = STRBUF_INIT;
if (!nr_rules) {
/*
*/
for (j = 0; j < rules_to_fail; j++) {
const char *rule = ref_rev_parse_rules[j];
- char refname[PATH_MAX];
/* skip matched rule */
if (i == j)
* (with this previous rule) to a valid ref
* read_ref() returns 0 on success
*/
- mksnpath(refname, sizeof(refname),
- rule, short_name_len, short_name);
- if (ref_exists(refname))
+ strbuf_reset(&resolved_buf);
+ strbuf_addf(&resolved_buf, rule,
+ short_name_len, short_name);
+ if (ref_exists(resolved_buf.buf))
break;
}
* short name is non-ambiguous if all previous rules
* haven't resolved to a valid ref
*/
- if (j == rules_to_fail)
+ if (j == rules_to_fail) {
+ strbuf_release(&resolved_buf);
return short_name;
+ }
}
+ strbuf_release(&resolved_buf);
free(short_name);
return xstrdup(refname);
}
int parse_hide_refs_config(const char *var, const char *value, const char *section)
{
+ const char *key;
if (!strcmp("transfer.hiderefs", var) ||
- /* NEEDSWORK: use parse_config_key() once both are merged */
- (starts_with(var, section) && var[strlen(section)] == '.' &&
- !strcmp(var + strlen(section), ".hiderefs"))) {
+ (!parse_config_key(var, section, NULL, NULL, &key) &&
+ !strcmp(key, "hiderefs"))) {
char *ref;
int len;
const char *match = hide_refs->items[i].string;
const char *subject;
int neg = 0;
- int len;
+ const char *p;
if (*match == '!') {
neg = 1;
}
/* refname can be NULL when namespaces are used. */
- if (!subject || !starts_with(subject, match))
- continue;
- len = strlen(match);
- if (!subject[len] || subject[len] == '/')
+ if (subject &&
+ skip_prefix(subject, match, &p) &&
+ (!*p || *p == '/'))
return !neg;
}
return 0;
return NULL;
}
-int rename_ref_available(const char *oldname, const char *newname)
+int refs_rename_ref_available(struct ref_store *refs,
+ const char *old_refname,
+ const char *new_refname)
{
struct string_list skip = STRING_LIST_INIT_NODUP;
struct strbuf err = STRBUF_INIT;
- int ret;
+ int ok;
- string_list_insert(&skip, oldname);
- ret = !verify_refname_available(newname, NULL, &skip, &err);
- if (!ret)
+ string_list_insert(&skip, old_refname);
+ ok = !refs_verify_refname_available(refs, new_refname,
+ NULL, &skip, &err);
+ if (!ok)
error("%s", err.buf);
string_list_clear(&skip, 0);
strbuf_release(&err);
- return ret;
+ return ok;
}
int head_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
return head_ref_submodule(NULL, fn, cb_data);
}
+struct ref_iterator *refs_ref_iterator_begin(
+ struct ref_store *refs,
+ const char *prefix, int trim, int flags)
+{
+ struct ref_iterator *iter;
+
+ if (ref_paranoia < 0)
+ ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0);
+ if (ref_paranoia)
+ flags |= DO_FOR_EACH_INCLUDE_BROKEN;
+
+ iter = refs->be->iterator_begin(refs, prefix, flags);
+
+ /*
+ * `iterator_begin()` already takes care of prefix, but we
+ * might need to do some trimming:
+ */
+ if (trim)
+ iter = prefix_ref_iterator_begin(iter, "", trim);
+
+ return iter;
+}
+
/*
* Call fn for each reference in the specified submodule for which the
* refname begins with prefix. If trim is non-zero, then trim that
* non-zero value, stop the iteration and return that value;
* otherwise, return 0.
*/
-static int do_for_each_ref(const char *submodule, const char *prefix,
+static int do_for_each_ref(struct ref_store *refs, const char *prefix,
each_ref_fn fn, int trim, int flags, void *cb_data)
{
struct ref_iterator *iter;
- iter = files_ref_iterator_begin(submodule, prefix, flags);
- iter = prefix_ref_iterator_begin(iter, prefix, trim);
+ if (!refs)
+ return 0;
+
+ iter = refs_ref_iterator_begin(refs, prefix, trim, flags);
return do_for_each_ref_iterator(iter, fn, cb_data);
}
+int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref(refs, "", fn, 0, 0, cb_data);
+}
+
int for_each_ref(each_ref_fn fn, void *cb_data)
{
- return do_for_each_ref(NULL, "", fn, 0, 0, cb_data);
+ return refs_for_each_ref(get_main_ref_store(), fn, cb_data);
}
int for_each_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
{
- return do_for_each_ref(submodule, "", fn, 0, 0, cb_data);
+ return refs_for_each_ref(get_submodule_ref_store(submodule), fn, cb_data);
+}
+
+int refs_for_each_ref_in(struct ref_store *refs, const char *prefix,
+ each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref(refs, prefix, fn, strlen(prefix), 0, cb_data);
}
int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data)
{
- return do_for_each_ref(NULL, prefix, fn, strlen(prefix), 0, cb_data);
+ return refs_for_each_ref_in(get_main_ref_store(), prefix, fn, cb_data);
}
int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken)
if (broken)
flag = DO_FOR_EACH_INCLUDE_BROKEN;
- return do_for_each_ref(NULL, prefix, fn, 0, flag, cb_data);
+ return do_for_each_ref(get_main_ref_store(),
+ prefix, fn, 0, flag, cb_data);
}
int for_each_ref_in_submodule(const char *submodule, const char *prefix,
- each_ref_fn fn, void *cb_data)
+ each_ref_fn fn, void *cb_data)
{
- return do_for_each_ref(submodule, prefix, fn, strlen(prefix), 0, cb_data);
+ return refs_for_each_ref_in(get_submodule_ref_store(submodule),
+ prefix, fn, cb_data);
+}
+
+int for_each_fullref_in_submodule(const char *submodule, const char *prefix,
+ each_ref_fn fn, void *cb_data,
+ unsigned int broken)
+{
+ unsigned int flag = 0;
+
+ if (broken)
+ flag = DO_FOR_EACH_INCLUDE_BROKEN;
+ return do_for_each_ref(get_submodule_ref_store(submodule),
+ prefix, fn, 0, flag, cb_data);
}
int for_each_replace_ref(each_ref_fn fn, void *cb_data)
{
- return do_for_each_ref(NULL, git_replace_ref_base, fn,
- strlen(git_replace_ref_base), 0, cb_data);
+ return do_for_each_ref(get_main_ref_store(),
+ git_replace_ref_base, fn,
+ strlen(git_replace_ref_base),
+ 0, cb_data);
}
int for_each_namespaced_ref(each_ref_fn fn, void *cb_data)
struct strbuf buf = STRBUF_INIT;
int ret;
strbuf_addf(&buf, "%srefs/", get_git_namespace());
- ret = do_for_each_ref(NULL, buf.buf, fn, 0, 0, cb_data);
+ ret = do_for_each_ref(get_main_ref_store(),
+ buf.buf, fn, 0, 0, cb_data);
strbuf_release(&buf);
return ret;
}
-int for_each_rawref(each_ref_fn fn, void *cb_data)
+int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
{
- return do_for_each_ref(NULL, "", fn, 0,
+ return do_for_each_ref(refs, "", fn, 0,
DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
}
+int for_each_rawref(each_ref_fn fn, void *cb_data)
+{
+ return refs_for_each_rawref(get_main_ref_store(), fn, cb_data);
+}
+
+int refs_read_raw_ref(struct ref_store *ref_store,
+ const char *refname, unsigned char *sha1,
+ struct strbuf *referent, unsigned int *type)
+{
+ return ref_store->be->read_raw_ref(ref_store, refname, sha1, referent, type);
+}
+
/* This function needs to return a meaningful errno on failure */
-const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
- unsigned char *sha1, int *flags)
+const char *refs_resolve_ref_unsafe(struct ref_store *refs,
+ const char *refname,
+ int resolve_flags,
+ unsigned char *sha1, int *flags)
{
static struct strbuf sb_refname = STRBUF_INIT;
int unused_flags;
for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) {
unsigned int read_flags = 0;
- if (read_raw_ref(refname, sha1, &sb_refname, &read_flags)) {
+ if (refs_read_raw_ref(refs, refname,
+ sha1, &sb_refname, &read_flags)) {
*flags |= read_flags;
if (errno != ENOENT || (resolve_flags & RESOLVE_REF_READING))
return NULL;
errno = ELOOP;
return NULL;
}
+
+/* backend functions */
+int refs_init_db(struct strbuf *err)
+{
+ struct ref_store *refs = get_main_ref_store();
+
+ return refs->be->init_db(refs, err);
+}
+
+const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
+ unsigned char *sha1, int *flags)
+{
+ return refs_resolve_ref_unsafe(get_main_ref_store(), refname,
+ resolve_flags, sha1, flags);
+}
+
+int resolve_gitlink_ref(const char *submodule, const char *refname,
+ unsigned char *sha1)
+{
+ size_t len = strlen(submodule);
+ struct ref_store *refs;
+ int flags;
+
+ while (len && submodule[len - 1] == '/')
+ len--;
+
+ if (!len)
+ return -1;
+
+ if (submodule[len]) {
+ /* We need to strip off one or more trailing slashes */
+ char *stripped = xmemdupz(submodule, len);
+
+ refs = get_submodule_ref_store(stripped);
+ free(stripped);
+ } else {
+ refs = get_submodule_ref_store(submodule);
+ }
+
+ if (!refs)
+ return -1;
+
+ if (!refs_resolve_ref_unsafe(refs, refname, 0, sha1, &flags) ||
+ is_null_sha1(sha1))
+ return -1;
+ return 0;
+}
+
+struct ref_store_hash_entry
+{
+ struct hashmap_entry ent; /* must be the first member! */
+
+ struct ref_store *refs;
+
+ /* NUL-terminated identifier of the ref store: */
+ char name[FLEX_ARRAY];
+};
+
+static int ref_store_hash_cmp(const void *unused_cmp_data,
+ const void *entry, const void *entry_or_key,
+ const void *keydata)
+{
+ const struct ref_store_hash_entry *e1 = entry, *e2 = entry_or_key;
+ const char *name = keydata ? keydata : e2->name;
+
+ return strcmp(e1->name, name);
+}
+
+static struct ref_store_hash_entry *alloc_ref_store_hash_entry(
+ const char *name, struct ref_store *refs)
+{
+ struct ref_store_hash_entry *entry;
+
+ FLEX_ALLOC_STR(entry, name, name);
+ hashmap_entry_init(entry, strhash(name));
+ entry->refs = refs;
+ return entry;
+}
+
+/* A pointer to the ref_store for the main repository: */
+static struct ref_store *main_ref_store;
+
+/* A hashmap of ref_stores, stored by submodule name: */
+static struct hashmap submodule_ref_stores;
+
+/* A hashmap of ref_stores, stored by worktree id: */
+static struct hashmap worktree_ref_stores;
+
+/*
+ * Look up a ref store by name. If that ref_store hasn't been
+ * registered yet, return NULL.
+ */
+static struct ref_store *lookup_ref_store_map(struct hashmap *map,
+ const char *name)
+{
+ struct ref_store_hash_entry *entry;
+
+ if (!map->tablesize)
+ /* It's initialized on demand in register_ref_store(). */
+ return NULL;
+
+ entry = hashmap_get_from_hash(map, strhash(name), name);
+ return entry ? entry->refs : NULL;
+}
+
+/*
+ * Create, record, and return a ref_store instance for the specified
+ * gitdir.
+ */
+static struct ref_store *ref_store_init(const char *gitdir,
+ unsigned int flags)
+{
+ const char *be_name = "files";
+ struct ref_storage_be *be = find_ref_storage_backend(be_name);
+ struct ref_store *refs;
+
+ if (!be)
+ die("BUG: reference backend %s is unknown", be_name);
+
+ refs = be->init(gitdir, flags);
+ return refs;
+}
+
+struct ref_store *get_main_ref_store(void)
+{
+ if (main_ref_store)
+ return main_ref_store;
+
+ main_ref_store = ref_store_init(get_git_dir(), REF_STORE_ALL_CAPS);
+ return main_ref_store;
+}
+
+/*
+ * Associate a ref store with a name. It is a fatal error to call this
+ * function twice for the same name.
+ */
+static void register_ref_store_map(struct hashmap *map,
+ const char *type,
+ struct ref_store *refs,
+ const char *name)
+{
+ if (!map->tablesize)
+ hashmap_init(map, ref_store_hash_cmp, NULL, 0);
+
+ if (hashmap_put(map, alloc_ref_store_hash_entry(name, refs)))
+ die("BUG: %s ref_store '%s' initialized twice", type, name);
+}
+
+struct ref_store *get_submodule_ref_store(const char *submodule)
+{
+ struct strbuf submodule_sb = STRBUF_INIT;
+ struct ref_store *refs;
+ int ret;
+
+ if (!submodule || !*submodule) {
+ /*
+ * FIXME: This case is ideally not allowed. But that
+ * can't happen until we clean up all the callers.
+ */
+ return get_main_ref_store();
+ }
+
+ refs = lookup_ref_store_map(&submodule_ref_stores, submodule);
+ if (refs)
+ return refs;
+
+ strbuf_addstr(&submodule_sb, submodule);
+ ret = is_nonbare_repository_dir(&submodule_sb);
+ strbuf_release(&submodule_sb);
+ if (!ret)
+ return NULL;
+
+ ret = submodule_to_gitdir(&submodule_sb, submodule);
+ if (ret) {
+ strbuf_release(&submodule_sb);
+ return NULL;
+ }
+
+ /* assume that add_submodule_odb() has been called */
+ refs = ref_store_init(submodule_sb.buf,
+ REF_STORE_READ | REF_STORE_ODB);
+ register_ref_store_map(&submodule_ref_stores, "submodule",
+ refs, submodule);
+
+ strbuf_release(&submodule_sb);
+ return refs;
+}
+
+struct ref_store *get_worktree_ref_store(const struct worktree *wt)
+{
+ struct ref_store *refs;
+ const char *id;
+
+ if (wt->is_current)
+ return get_main_ref_store();
+
+ id = wt->id ? wt->id : "/";
+ refs = lookup_ref_store_map(&worktree_ref_stores, id);
+ if (refs)
+ return refs;
+
+ if (wt->id)
+ refs = ref_store_init(git_common_path("worktrees/%s", wt->id),
+ REF_STORE_ALL_CAPS);
+ else
+ refs = ref_store_init(get_git_common_dir(),
+ REF_STORE_ALL_CAPS);
+
+ if (refs)
+ register_ref_store_map(&worktree_ref_stores, "worktree",
+ refs, id);
+ return refs;
+}
+
+void base_ref_store_init(struct ref_store *refs,
+ const struct ref_storage_be *be)
+{
+ refs->be = be;
+}
+
+/* backend functions */
+int refs_pack_refs(struct ref_store *refs, unsigned int flags)
+{
+ return refs->be->pack_refs(refs, flags);
+}
+
+int refs_peel_ref(struct ref_store *refs, const char *refname,
+ unsigned char *sha1)
+{
+ return refs->be->peel_ref(refs, refname, sha1);
+}
+
+int peel_ref(const char *refname, unsigned char *sha1)
+{
+ return refs_peel_ref(get_main_ref_store(), refname, sha1);
+}
+
+int refs_create_symref(struct ref_store *refs,
+ const char *ref_target,
+ const char *refs_heads_master,
+ const char *logmsg)
+{
+ return refs->be->create_symref(refs, ref_target,
+ refs_heads_master,
+ logmsg);
+}
+
+int create_symref(const char *ref_target, const char *refs_heads_master,
+ const char *logmsg)
+{
+ return refs_create_symref(get_main_ref_store(), ref_target,
+ refs_heads_master, logmsg);
+}
+
+int ref_update_reject_duplicates(struct string_list *refnames,
+ struct strbuf *err)
+{
+ size_t i, n = refnames->nr;
+
+ assert(err);
+
+ for (i = 1; i < n; i++) {
+ int cmp = strcmp(refnames->items[i - 1].string,
+ refnames->items[i].string);
+
+ if (!cmp) {
+ strbuf_addf(err,
+ "multiple updates for ref '%s' not allowed.",
+ refnames->items[i].string);
+ return 1;
+ } else if (cmp > 0) {
+ die("BUG: ref_update_reject_duplicates() received unsorted list");
+ }
+ }
+ return 0;
+}
+
+int ref_transaction_prepare(struct ref_transaction *transaction,
+ struct strbuf *err)
+{
+ struct ref_store *refs = transaction->ref_store;
+
+ switch (transaction->state) {
+ case REF_TRANSACTION_OPEN:
+ /* Good. */
+ break;
+ case REF_TRANSACTION_PREPARED:
+ die("BUG: prepare called twice on reference transaction");
+ break;
+ case REF_TRANSACTION_CLOSED:
+ die("BUG: prepare called on a closed reference transaction");
+ break;
+ default:
+ die("BUG: unexpected reference transaction state");
+ break;
+ }
+
+ if (getenv(GIT_QUARANTINE_ENVIRONMENT)) {
+ strbuf_addstr(err,
+ _("ref updates forbidden inside quarantine environment"));
+ return -1;
+ }
+
+ return refs->be->transaction_prepare(refs, transaction, err);
+}
+
+int ref_transaction_abort(struct ref_transaction *transaction,
+ struct strbuf *err)
+{
+ struct ref_store *refs = transaction->ref_store;
+ int ret = 0;
+
+ switch (transaction->state) {
+ case REF_TRANSACTION_OPEN:
+ /* No need to abort explicitly. */
+ break;
+ case REF_TRANSACTION_PREPARED:
+ ret = refs->be->transaction_abort(refs, transaction, err);
+ break;
+ case REF_TRANSACTION_CLOSED:
+ die("BUG: abort called on a closed reference transaction");
+ break;
+ default:
+ die("BUG: unexpected reference transaction state");
+ break;
+ }
+
+ ref_transaction_free(transaction);
+ return ret;
+}
+
+int ref_transaction_commit(struct ref_transaction *transaction,
+ struct strbuf *err)
+{
+ struct ref_store *refs = transaction->ref_store;
+ int ret;
+
+ switch (transaction->state) {
+ case REF_TRANSACTION_OPEN:
+ /* Need to prepare first. */
+ ret = ref_transaction_prepare(transaction, err);
+ if (ret)
+ return ret;
+ break;
+ case REF_TRANSACTION_PREPARED:
+ /* Fall through to finish. */
+ break;
+ case REF_TRANSACTION_CLOSED:
+ die("BUG: commit called on a closed reference transaction");
+ break;
+ default:
+ die("BUG: unexpected reference transaction state");
+ break;
+ }
+
+ return refs->be->transaction_finish(refs, transaction, err);
+}
+
+int refs_verify_refname_available(struct ref_store *refs,
+ const char *refname,
+ const struct string_list *extras,
+ const struct string_list *skip,
+ struct strbuf *err)
+{
+ const char *slash;
+ const char *extra_refname;
+ struct strbuf dirname = STRBUF_INIT;
+ struct strbuf referent = STRBUF_INIT;
+ struct object_id oid;
+ unsigned int type;
+ struct ref_iterator *iter;
+ int ok;
+ int ret = -1;
+
+ /*
+ * For the sake of comments in this function, suppose that
+ * refname is "refs/foo/bar".
+ */
+
+ assert(err);
+
+ strbuf_grow(&dirname, strlen(refname) + 1);
+ for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) {
+ /* Expand dirname to the new prefix, not including the trailing slash: */
+ strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len);
+
+ /*
+ * We are still at a leading dir of the refname (e.g.,
+ * "refs/foo"; if there is a reference with that name,
+ * it is a conflict, *unless* it is in skip.
+ */
+ if (skip && string_list_has_string(skip, dirname.buf))
+ continue;
+
+ if (!refs_read_raw_ref(refs, dirname.buf, oid.hash, &referent, &type)) {
+ strbuf_addf(err, "'%s' exists; cannot create '%s'",
+ dirname.buf, refname);
+ goto cleanup;
+ }
+
+ if (extras && string_list_has_string(extras, dirname.buf)) {
+ strbuf_addf(err, "cannot process '%s' and '%s' at the same time",
+ refname, dirname.buf);
+ goto cleanup;
+ }
+ }
+
+ /*
+ * We are at the leaf of our refname (e.g., "refs/foo/bar").
+ * There is no point in searching for a reference with that
+ * name, because a refname isn't considered to conflict with
+ * itself. But we still need to check for references whose
+ * names are in the "refs/foo/bar/" namespace, because they
+ * *do* conflict.
+ */
+ strbuf_addstr(&dirname, refname + dirname.len);
+ strbuf_addch(&dirname, '/');
+
+ iter = refs_ref_iterator_begin(refs, dirname.buf, 0,
+ DO_FOR_EACH_INCLUDE_BROKEN);
+ while ((ok = ref_iterator_advance(iter)) == ITER_OK) {
+ if (skip &&
+ string_list_has_string(skip, iter->refname))
+ continue;
+
+ strbuf_addf(err, "'%s' exists; cannot create '%s'",
+ iter->refname, refname);
+ ref_iterator_abort(iter);
+ goto cleanup;
+ }
+
+ if (ok != ITER_DONE)
+ die("BUG: error while iterating over references");
+
+ extra_refname = find_descendant_ref(dirname.buf, extras, skip);
+ if (extra_refname)
+ strbuf_addf(err, "cannot process '%s' and '%s' at the same time",
+ refname, extra_refname);
+ else
+ ret = 0;
+
+cleanup:
+ strbuf_release(&referent);
+ strbuf_release(&dirname);
+ return ret;
+}
+
+int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data)
+{
+ struct ref_iterator *iter;
+
+ iter = refs->be->reflog_iterator_begin(refs);
+
+ return do_for_each_ref_iterator(iter, fn, cb_data);
+}
+
+int for_each_reflog(each_ref_fn fn, void *cb_data)
+{
+ return refs_for_each_reflog(get_main_ref_store(), fn, cb_data);
+}
+
+int refs_for_each_reflog_ent_reverse(struct ref_store *refs,
+ const char *refname,
+ each_reflog_ent_fn fn,
+ void *cb_data)
+{
+ return refs->be->for_each_reflog_ent_reverse(refs, refname,
+ fn, cb_data);
+}
+
+int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn,
+ void *cb_data)
+{
+ return refs_for_each_reflog_ent_reverse(get_main_ref_store(),
+ refname, fn, cb_data);
+}
+
+int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname,
+ each_reflog_ent_fn fn, void *cb_data)
+{
+ return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data);
+}
+
+int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn,
+ void *cb_data)
+{
+ return refs_for_each_reflog_ent(get_main_ref_store(), refname,
+ fn, cb_data);
+}
+
+int refs_reflog_exists(struct ref_store *refs, const char *refname)
+{
+ return refs->be->reflog_exists(refs, refname);
+}
+
+int reflog_exists(const char *refname)
+{
+ return refs_reflog_exists(get_main_ref_store(), refname);
+}
+
+int refs_create_reflog(struct ref_store *refs, const char *refname,
+ int force_create, struct strbuf *err)
+{
+ return refs->be->create_reflog(refs, refname, force_create, err);
+}
+
+int safe_create_reflog(const char *refname, int force_create,
+ struct strbuf *err)
+{
+ return refs_create_reflog(get_main_ref_store(), refname,
+ force_create, err);
+}
+
+int refs_delete_reflog(struct ref_store *refs, const char *refname)
+{
+ return refs->be->delete_reflog(refs, refname);
+}
+
+int delete_reflog(const char *refname)
+{
+ return refs_delete_reflog(get_main_ref_store(), refname);
+}
+
+int refs_reflog_expire(struct ref_store *refs,
+ const char *refname, const unsigned char *sha1,
+ unsigned int flags,
+ reflog_expiry_prepare_fn prepare_fn,
+ reflog_expiry_should_prune_fn should_prune_fn,
+ reflog_expiry_cleanup_fn cleanup_fn,
+ void *policy_cb_data)
+{
+ return refs->be->reflog_expire(refs, refname, sha1, flags,
+ prepare_fn, should_prune_fn,
+ cleanup_fn, policy_cb_data);
+}
+
+int reflog_expire(const char *refname, const unsigned char *sha1,
+ unsigned int flags,
+ reflog_expiry_prepare_fn prepare_fn,
+ reflog_expiry_should_prune_fn should_prune_fn,
+ reflog_expiry_cleanup_fn cleanup_fn,
+ void *policy_cb_data)
+{
+ return refs_reflog_expire(get_main_ref_store(),
+ refname, sha1, flags,
+ prepare_fn, should_prune_fn,
+ cleanup_fn, policy_cb_data);
+}
+
+int initial_ref_transaction_commit(struct ref_transaction *transaction,
+ struct strbuf *err)
+{
+ struct ref_store *refs = transaction->ref_store;
+
+ return refs->be->initial_transaction_commit(refs, transaction, err);
+}
+
+int refs_delete_refs(struct ref_store *refs, const char *msg,
+ struct string_list *refnames, unsigned int flags)
+{
+ return refs->be->delete_refs(refs, msg, refnames, flags);
+}
+
+int delete_refs(const char *msg, struct string_list *refnames,
+ unsigned int flags)
+{
+ return refs_delete_refs(get_main_ref_store(), msg, refnames, flags);
+}
+
+int refs_rename_ref(struct ref_store *refs, const char *oldref,
+ const char *newref, const char *logmsg)
+{
+ return refs->be->rename_ref(refs, oldref, newref, logmsg);
+}
+
+int rename_ref(const char *oldref, const char *newref, const char *logmsg)
+{
+ return refs_rename_ref(get_main_ref_store(), oldref, newref, logmsg);
+}
projects / thirdparty / git.git / blobdiff