return get_ref_dir(refs->loose);
}
-#define MAXREFLEN (1024)
-
-/*
- * Called by resolve_gitlink_ref_recursive() after it failed to read
- * from the loose refs in refs. Find <refname> in the packed-refs file
- * for the submodule.
- */
-static int resolve_gitlink_packed_ref(struct files_ref_store *refs,
- const char *refname, unsigned char *sha1)
-{
- struct ref_entry *ref;
- struct ref_dir *dir = get_packed_refs(refs);
-
- ref = find_ref(dir, refname);
- if (ref == NULL)
- return -1;
-
- hashcpy(sha1, ref->u.value.oid.hash);
- return 0;
-}
-
-static int resolve_gitlink_ref_recursive(struct files_ref_store *refs,
- const char *refname, unsigned char *sha1,
- int recursion)
-{
- int fd, len;
- char buffer[128], *p;
- char *path;
-
- if (recursion > SYMREF_MAXDEPTH || strlen(refname) > MAXREFLEN)
- return -1;
- path = *refs->base.submodule
- ? git_pathdup_submodule(refs->base.submodule, "%s", refname)
- : git_pathdup("%s", refname);
- fd = open(path, O_RDONLY);
- free(path);
- if (fd < 0)
- return resolve_gitlink_packed_ref(refs, refname, sha1);
-
- len = read(fd, buffer, sizeof(buffer)-1);
- close(fd);
- if (len < 0)
- return -1;
- while (len && isspace(buffer[len-1]))
- len--;
- buffer[len] = 0;
-
- /* Was it a detached head or an old-fashioned symlink? */
- if (!get_sha1_hex(buffer, sha1))
- return 0;
-
- /* Symref? */
- if (strncmp(buffer, "ref:", 4))
- return -1;
- p = buffer + 4;
- while (isspace(*p))
- p++;
-
- return resolve_gitlink_ref_recursive(refs, p, sha1, recursion+1);
-}
-
-int resolve_gitlink_ref(const char *path, const char *refname, unsigned char *sha1)
-{
- int len = strlen(path);
- struct strbuf submodule = STRBUF_INIT;
- struct files_ref_store *refs;
-
- while (len && path[len-1] == '/')
- len--;
- if (!len)
- return -1;
-
- strbuf_add(&submodule, path, len);
- refs = get_files_ref_store(submodule.buf, "resolve_gitlink_ref");
- if (!refs) {
- strbuf_release(&submodule);
- return -1;
- }
- strbuf_release(&submodule);
-
- return resolve_gitlink_ref_recursive(refs, refname, sha1, 0);
-}
-
/*
* Return the ref_entry for the given refname from the packed
* references. If it does not exist, return NULL.
*/
-static struct ref_entry *get_packed_ref(const char *refname)
+static struct ref_entry *get_packed_ref(struct files_ref_store *refs,
+ const char *refname)
{
- struct files_ref_store *refs =
- get_files_ref_store(NULL, "get_packed_ref");
-
return find_ref(get_packed_refs(refs), refname);
}
/*
* A loose ref file doesn't exist; check for a packed ref.
*/
-static int resolve_missing_loose_ref(const char *refname,
- unsigned char *sha1,
- unsigned int *flags)
+static int resolve_packed_ref(struct files_ref_store *refs,
+ const char *refname,
+ unsigned char *sha1, unsigned int *flags)
{
struct ref_entry *entry;
* The loose reference file does not exist; check for a packed
* reference.
*/
- entry = get_packed_ref(refname);
+ entry = get_packed_ref(refs, refname);
if (entry) {
hashcpy(sha1, entry->u.value.oid.hash);
*flags |= REF_ISPACKED;
return -1;
}
-int read_raw_ref(const char *refname, unsigned char *sha1,
- struct strbuf *referent, unsigned int *type)
+static int files_read_raw_ref(struct ref_store *ref_store,
+ const char *refname, unsigned char *sha1,
+ struct strbuf *referent, unsigned int *type)
{
+ struct files_ref_store *refs =
+ files_downcast(ref_store, 1, "read_raw_ref");
struct strbuf sb_contents = STRBUF_INIT;
struct strbuf sb_path = STRBUF_INIT;
const char *path;
*type = 0;
strbuf_reset(&sb_path);
- strbuf_git_path(&sb_path, "%s", refname);
+
+ if (*refs->base.submodule)
+ strbuf_git_path_submodule(&sb_path, refs->base.submodule, "%s", refname);
+ else
+ strbuf_git_path(&sb_path, "%s", refname);
+
path = sb_path.buf;
stat_ref:
if (lstat(path, &st) < 0) {
if (errno != ENOENT)
goto out;
- if (resolve_missing_loose_ref(refname, sha1, type)) {
+ if (resolve_packed_ref(refs, refname, sha1, type)) {
errno = ENOENT;
goto out;
}
* ref is supposed to be, there could still be a
* packed ref:
*/
- if (resolve_missing_loose_ref(refname, sha1, type)) {
+ if (resolve_packed_ref(refs, refname, sha1, type)) {
errno = EISDIR;
goto out;
}
* avoided, namely if we were successfully able to read the ref
* - Generate informative error messages in the case of failure
*/
-static int lock_raw_ref(const char *refname, int mustexist,
+static int lock_raw_ref(struct files_ref_store *refs,
+ const char *refname, int mustexist,
const struct string_list *extras,
const struct string_list *skip,
struct ref_lock **lock_p,
unsigned int *type,
struct strbuf *err)
{
- struct files_ref_store *refs =
- get_files_ref_store(NULL, "lock_raw_ref");
struct ref_lock *lock;
struct strbuf ref_file = STRBUF_INIT;
int attempts_remaining = 3;
int ret = TRANSACTION_GENERIC_ERROR;
assert(err);
+ assert_main_repository(&refs->base, "lock_raw_ref");
+
*type = 0;
/* First lock the file so it can't change out from under us. */
* fear that its value will change.
*/
- if (read_raw_ref(refname, lock->old_oid.hash, referent, type)) {
+ if (files_read_raw_ref(&refs->base, refname,
+ lock->old_oid.hash, referent, type)) {
if (errno == ENOENT) {
if (mustexist) {
/* Garden variety missing reference. */
return status;
}
-int peel_ref(const char *refname, unsigned char *sha1)
+static int files_peel_ref(struct ref_store *ref_store,
+ const char *refname, unsigned char *sha1)
{
+ struct files_ref_store *refs = files_downcast(ref_store, 0, "peel_ref");
int flag;
unsigned char base[20];
* have REF_KNOWS_PEELED.
*/
if (flag & REF_ISPACKED) {
- struct ref_entry *r = get_packed_ref(refname);
+ struct ref_entry *r = get_packed_ref(refs, refname);
if (r) {
if (peel_entry(r, 0))
return -1;
* Locks a ref returning the lock on success and NULL on failure.
* On failure errno is set to something meaningful.
*/
-static struct ref_lock *lock_ref_sha1_basic(const char *refname,
+static struct ref_lock *lock_ref_sha1_basic(struct files_ref_store *refs,
+ const char *refname,
const unsigned char *old_sha1,
const struct string_list *extras,
const struct string_list *skip,
unsigned int flags, int *type,
struct strbuf *err)
{
- struct files_ref_store *refs =
- get_files_ref_store(NULL, "lock_ref_sha1_basic");
struct strbuf ref_file = STRBUF_INIT;
struct ref_lock *lock;
int last_errno = 0;
int attempts_remaining = 3;
int resolved;
+ assert_main_repository(&refs->base, "lock_ref_sha1_basic");
assert(err);
lock = xcalloc(1, sizeof(struct ref_lock));
* hold_lock_file_for_update(). Return 0 on success. On errors, set
* errno appropriately and return a nonzero value.
*/
-static int lock_packed_refs(int flags)
+static int lock_packed_refs(struct files_ref_store *refs, int flags)
{
- struct files_ref_store *refs =
- get_files_ref_store(NULL, "lock_packed_refs");
static int timeout_configured = 0;
static int timeout_value = 1000;
struct packed_ref_cache *packed_ref_cache;
+ assert_main_repository(&refs->base, "lock_packed_refs");
+
if (!timeout_configured) {
git_config_get_int("core.packedrefstimeout", &timeout_value);
timeout_configured = 1;
* lock_packed_refs()). Return zero on success. On errors, set errno
* and return a nonzero value
*/
-static int commit_packed_refs(void)
+static int commit_packed_refs(struct files_ref_store *refs)
{
- struct files_ref_store *refs =
- get_files_ref_store(NULL, "commit_packed_refs");
struct packed_ref_cache *packed_ref_cache =
get_packed_ref_cache(refs);
int error = 0;
int save_errno = 0;
FILE *out;
+ assert_main_repository(&refs->base, "commit_packed_refs");
+
if (!packed_ref_cache->lock)
die("internal error: packed-refs not locked");
* in-memory packed reference cache. (The packed-refs file will be
* read anew if it is needed again after this function is called.)
*/
-static void rollback_packed_refs(void)
+static void rollback_packed_refs(struct files_ref_store *refs)
{
- struct files_ref_store *refs =
- get_files_ref_store(NULL, "rollback_packed_refs");
struct packed_ref_cache *packed_ref_cache =
get_packed_ref_cache(refs);
+ assert_main_repository(&refs->base, "rollback_packed_refs");
+
if (!packed_ref_cache->lock)
die("internal error: packed-refs not locked");
rollback_lock_file(packed_ref_cache->lock);
}
}
-int pack_refs(unsigned int flags)
+static int files_pack_refs(struct ref_store *ref_store, unsigned int flags)
{
struct files_ref_store *refs =
- get_files_ref_store(NULL, "pack_refs");
+ files_downcast(ref_store, 0, "pack_refs");
struct pack_refs_cb_data cbdata;
memset(&cbdata, 0, sizeof(cbdata));
cbdata.flags = flags;
- lock_packed_refs(LOCK_DIE_ON_ERROR);
+ lock_packed_refs(refs, LOCK_DIE_ON_ERROR);
cbdata.packed_refs = get_packed_refs(refs);
do_for_each_entry_in_dir(get_loose_refs(refs), 0,
pack_if_possible_fn, &cbdata);
- if (commit_packed_refs())
+ if (commit_packed_refs(refs))
die_errno("unable to overwrite old ref-pack file");
prune_refs(cbdata.ref_to_prune);
*
* The refs in 'refnames' needn't be sorted. `err` must not be NULL.
*/
-static int repack_without_refs(struct string_list *refnames, struct strbuf *err)
+static int repack_without_refs(struct files_ref_store *refs,
+ struct string_list *refnames, struct strbuf *err)
{
- struct files_ref_store *refs =
- get_files_ref_store(NULL, "repack_without_refs");
struct ref_dir *packed;
struct string_list_item *refname;
int ret, needs_repacking = 0, removed = 0;
+ assert_main_repository(&refs->base, "repack_without_refs");
assert(err);
/* Look for a packed ref */
for_each_string_list_item(refname, refnames) {
- if (get_packed_ref(refname->string)) {
+ if (get_packed_ref(refs, refname->string)) {
needs_repacking = 1;
break;
}
if (!needs_repacking)
return 0; /* no refname exists in packed refs */
- if (lock_packed_refs(0)) {
+ if (lock_packed_refs(refs, 0)) {
unable_to_lock_message(git_path("packed-refs"), errno, err);
return -1;
}
* All packed entries disappeared while we were
* acquiring the lock.
*/
- rollback_packed_refs();
+ rollback_packed_refs(refs);
return 0;
}
/* Write what remains */
- ret = commit_packed_refs();
+ ret = commit_packed_refs(refs);
if (ret)
strbuf_addf(err, "unable to overwrite old ref-pack file: %s",
strerror(errno));
int delete_refs(struct string_list *refnames, unsigned int flags)
{
+ struct files_ref_store *refs =
+ get_files_ref_store(NULL, "delete_refs");
struct strbuf err = STRBUF_INIT;
int i, result = 0;
if (!refnames->nr)
return 0;
- result = repack_without_refs(refnames, &err);
+ result = repack_without_refs(refs, refnames, &err);
if (result) {
/*
* If we failed to rewrite the packed-refs file, then
return ret;
}
-int verify_refname_available(const char *newname,
- const struct string_list *extras,
- const struct string_list *skip,
- struct strbuf *err)
+static int files_verify_refname_available(struct ref_store *ref_store,
+ const char *newname,
+ const struct string_list *extras,
+ const struct string_list *skip,
+ struct strbuf *err)
{
struct files_ref_store *refs =
- get_files_ref_store(NULL, "verify_refname_available");
+ files_downcast(ref_store, 1, "verify_refname_available");
struct ref_dir *packed_refs = get_packed_refs(refs);
struct ref_dir *loose_refs = get_loose_refs(refs);
static int write_ref_to_lockfile(struct ref_lock *lock,
const unsigned char *sha1, struct strbuf *err);
-static int commit_ref_update(struct ref_lock *lock,
+static int commit_ref_update(struct files_ref_store *refs,
+ struct ref_lock *lock,
const unsigned char *sha1, const char *logmsg,
struct strbuf *err);
int rename_ref(const char *oldrefname, const char *newrefname, const char *logmsg)
{
+ struct files_ref_store *refs = get_files_ref_store(NULL, "rename_ref");
unsigned char sha1[20], orig_sha1[20];
int flag = 0, logmoved = 0;
struct ref_lock *lock;
logmoved = log;
- lock = lock_ref_sha1_basic(newrefname, NULL, NULL, NULL, REF_NODEREF,
- NULL, &err);
+ lock = lock_ref_sha1_basic(refs, newrefname, NULL, NULL, NULL,
+ REF_NODEREF, NULL, &err);
if (!lock) {
error("unable to rename '%s' to '%s': %s", oldrefname, newrefname, err.buf);
strbuf_release(&err);
hashcpy(lock->old_oid.hash, orig_sha1);
if (write_ref_to_lockfile(lock, orig_sha1, &err) ||
- commit_ref_update(lock, orig_sha1, logmsg, &err)) {
+ commit_ref_update(refs, lock, orig_sha1, logmsg, &err)) {
error("unable to write current sha1 into %s: %s", newrefname, err.buf);
strbuf_release(&err);
goto rollback;
return 0;
rollback:
- lock = lock_ref_sha1_basic(oldrefname, NULL, NULL, NULL, REF_NODEREF,
- NULL, &err);
+ lock = lock_ref_sha1_basic(refs, oldrefname, NULL, NULL, NULL,
+ REF_NODEREF, NULL, &err);
if (!lock) {
error("unable to lock %s for rollback: %s", oldrefname, err.buf);
strbuf_release(&err);
flag = log_all_ref_updates;
log_all_ref_updates = 0;
if (write_ref_to_lockfile(lock, orig_sha1, &err) ||
- commit_ref_update(lock, orig_sha1, NULL, &err)) {
+ commit_ref_update(refs, lock, orig_sha1, NULL, &err)) {
error("unable to write current sha1 into %s: %s", oldrefname, err.buf);
strbuf_release(&err);
}
* to the loose reference lockfile. Also update the reflogs if
* necessary, using the specified lockmsg (which can be NULL).
*/
-static int commit_ref_update(struct ref_lock *lock,
+static int commit_ref_update(struct files_ref_store *refs,
+ struct ref_lock *lock,
const unsigned char *sha1, const char *logmsg,
struct strbuf *err)
{
- struct files_ref_store *refs =
- get_files_ref_store(NULL, "commit_ref_update");
+ assert_main_repository(&refs->base, "commit_ref_update");
clear_loose_ref_cache(refs);
if (log_ref_write(lock->ref_name, lock->old_oid.hash, sha1, logmsg, 0, err)) {
return 0;
}
-int create_symref(const char *refname, const char *target, const char *logmsg)
+static int files_create_symref(struct ref_store *ref_store,
+ const char *refname, const char *target,
+ const char *logmsg)
{
+ struct files_ref_store *refs =
+ files_downcast(ref_store, 0, "create_symref");
struct strbuf err = STRBUF_INIT;
struct ref_lock *lock;
int ret;
- lock = lock_ref_sha1_basic(refname, NULL, NULL, NULL, REF_NODEREF, NULL,
+ lock = lock_ref_sha1_basic(refs, refname, NULL,
+ NULL, NULL, REF_NODEREF, NULL,
&err);
if (!lock) {
error("%s", err.buf);
* Note that the new update will itself be subject to splitting when
* the iteration gets to it.
*/
-static int split_symref_update(struct ref_update *update,
+static int split_symref_update(struct files_ref_store *refs,
+ struct ref_update *update,
const char *referent,
struct ref_transaction *transaction,
struct string_list *affected_refnames,
* - If it is an update of head_ref, add a corresponding REF_LOG_ONLY
* update of HEAD.
*/
-static int lock_ref_for_update(struct ref_update *update,
+static int lock_ref_for_update(struct files_ref_store *refs,
+ struct ref_update *update,
struct ref_transaction *transaction,
const char *head_ref,
struct string_list *affected_refnames,
int ret;
struct ref_lock *lock;
+ assert_main_repository(&refs->base, "lock_ref_for_update");
+
if ((update->flags & REF_HAVE_NEW) && is_null_sha1(update->new_sha1))
update->flags |= REF_DELETING;
return ret;
}
- ret = lock_raw_ref(update->refname, mustexist,
+ ret = lock_raw_ref(refs, update->refname, mustexist,
affected_refnames, NULL,
&update->lock, &referent,
&update->type, err);
* of processing the split-off update, so we
* don't have to do it here.
*/
- ret = split_symref_update(update, referent.buf, transaction,
+ ret = split_symref_update(refs, update,
+ referent.buf, transaction,
affected_refnames, err);
if (ret)
return ret;
return 0;
}
-int ref_transaction_commit(struct ref_transaction *transaction,
- struct strbuf *err)
+static int files_transaction_commit(struct ref_store *ref_store,
+ struct ref_transaction *transaction,
+ struct strbuf *err)
{
struct files_ref_store *refs =
- get_files_ref_store(NULL, "ref_transaction_commit");
+ files_downcast(ref_store, 0, "ref_transaction_commit");
int ret = 0, i;
struct string_list refs_to_delete = STRING_LIST_INIT_NODUP;
struct string_list_item *ref_to_delete;
for (i = 0; i < transaction->nr; i++) {
struct ref_update *update = transaction->updates[i];
- ret = lock_ref_for_update(update, transaction, head_ref,
- &affected_refnames, err);
+ ret = lock_ref_for_update(refs, update, transaction,
+ head_ref, &affected_refnames, err);
if (ret)
goto cleanup;
}
}
}
- if (repack_without_refs(&refs_to_delete, err)) {
+ if (repack_without_refs(refs, &refs_to_delete, err)) {
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
}
}
- if (lock_packed_refs(0)) {
+ if (lock_packed_refs(refs, 0)) {
strbuf_addf(err, "unable to lock packed-refs file: %s",
strerror(errno));
ret = TRANSACTION_GENERIC_ERROR;
add_packed_ref(refs, update->refname, update->new_sha1);
}
- if (commit_packed_refs()) {
+ if (commit_packed_refs(refs)) {
strbuf_addf(err, "unable to commit packed-refs file: %s",
strerror(errno));
ret = TRANSACTION_GENERIC_ERROR;
reflog_expiry_cleanup_fn cleanup_fn,
void *policy_cb_data)
{
+ struct files_ref_store *refs =
+ get_files_ref_store(NULL, "reflog_expire");
static struct lock_file reflog_lock;
struct expire_reflog_cb cb;
struct ref_lock *lock;
* reference itself, plus we might need to update the
* reference if --updateref was specified:
*/
- lock = lock_ref_sha1_basic(refname, sha1, NULL, NULL, REF_NODEREF,
+ lock = lock_ref_sha1_basic(refs, refname, sha1,
+ NULL, NULL, REF_NODEREF,
&type, &err);
if (!lock) {
error("cannot lock ref '%s': %s", refname, err.buf);
struct ref_storage_be refs_be_files = {
NULL,
"files",
- files_ref_store_create
+ files_ref_store_create,
+ files_transaction_commit,
+
+ files_pack_refs,
+ files_peel_ref,
+ files_create_symref,
+
+ files_read_raw_ref,
+ files_verify_refname_available
};