struct object_id peeled;
};
-struct ref_cache;
+struct files_ref_store;
/*
* Information used (along with the information in ref_entry) to
*/
int sorted;
- /* A pointer to the ref_cache that contains this ref_dir. */
- struct ref_cache *ref_cache;
+ /* A pointer to the files_ref_store that contains this ref_dir. */
+ struct files_ref_store *ref_store;
struct ref_entry **entries;
};
static void read_loose_refs(const char *dirname, struct ref_dir *dir);
static int search_ref_dir(struct ref_dir *dir, const char *refname, size_t len);
-static struct ref_entry *create_dir_entry(struct ref_cache *ref_cache,
+static struct ref_entry *create_dir_entry(struct files_ref_store *ref_store,
const char *dirname, size_t len,
int incomplete);
static void add_entry_to_dir(struct ref_dir *dir, struct ref_entry *entry);
int pos = search_ref_dir(dir, "refs/bisect/", 12);
if (pos < 0) {
struct ref_entry *child_entry;
- child_entry = create_dir_entry(dir->ref_cache,
+ child_entry = create_dir_entry(dir->ref_store,
"refs/bisect/",
12, 1);
add_entry_to_dir(dir, child_entry);
* dirname is the name of the directory with a trailing slash (e.g.,
* "refs/heads/") or "" for the top-level directory.
*/
-static struct ref_entry *create_dir_entry(struct ref_cache *ref_cache,
+static struct ref_entry *create_dir_entry(struct files_ref_store *ref_store,
const char *dirname, size_t len,
int incomplete)
{
struct ref_entry *direntry;
FLEX_ALLOC_MEM(direntry, name, dirname, len);
- direntry->u.subdir.ref_cache = ref_cache;
+ direntry->u.subdir.ref_store = ref_store;
direntry->flag = REF_DIR | (incomplete ? REF_INCOMPLETE : 0);
return direntry;
}
* therefore, create an empty record for it but mark
* the record complete.
*/
- entry = create_dir_entry(dir->ref_cache, subdirname, len, 0);
+ entry = create_dir_entry(dir->ref_store, subdirname, len, 0);
add_entry_to_dir(dir, entry);
} else {
entry = dir->entries[entry_index];
if (dir->sorted == dir->nr)
return;
- qsort(dir->entries, dir->nr, sizeof(*dir->entries), ref_entry_cmp);
+ QSORT(dir->entries, dir->nr, ref_entry_cmp);
/* Remove any duplicates: */
for (i = 0, j = 0; j < dir->nr; j++) {
/*
* Count of references to the data structure in this instance,
- * including the pointer from ref_cache::packed if any. The
- * data will not be freed as long as the reference count is
- * nonzero.
+ * including the pointer from files_ref_store::packed if any.
+ * The data will not be freed as long as the reference count
+ * is nonzero.
*/
unsigned int referrers;
* Future: need to be in "struct repository"
* when doing a full libification.
*/
-static struct ref_cache {
- struct ref_cache *next;
+struct files_ref_store {
+ struct ref_store base;
struct ref_entry *loose;
struct packed_ref_cache *packed;
- /*
- * The submodule name, or "" for the main repo. We allocate
- * length 1 rather than FLEX_ARRAY so that the main ref_cache
- * is initialized correctly.
- */
- char name[1];
-} ref_cache, *submodule_ref_caches;
+};
/* Lock used for the main packed-refs file: */
static struct lock_file packlock;
}
}
-static void clear_packed_ref_cache(struct ref_cache *refs)
+static void clear_packed_ref_cache(struct files_ref_store *refs)
{
if (refs->packed) {
struct packed_ref_cache *packed_refs = refs->packed;
}
}
-static void clear_loose_ref_cache(struct ref_cache *refs)
+static void clear_loose_ref_cache(struct files_ref_store *refs)
{
if (refs->loose) {
free_ref_entry(refs->loose);
* Create a new submodule ref cache and add it to the internal
* set of caches.
*/
-static struct ref_cache *create_ref_cache(const char *submodule)
+static struct ref_store *files_ref_store_create(const char *submodule)
{
- struct ref_cache *refs;
- if (!submodule)
- submodule = "";
- FLEX_ALLOC_STR(refs, name, submodule);
- refs->next = submodule_ref_caches;
- submodule_ref_caches = refs;
- return refs;
-}
+ struct files_ref_store *refs = xcalloc(1, sizeof(*refs));
+ struct ref_store *ref_store = (struct ref_store *)refs;
-static struct ref_cache *lookup_ref_cache(const char *submodule)
-{
- struct ref_cache *refs;
-
- if (!submodule || !*submodule)
- return &ref_cache;
+ base_ref_store_init(ref_store, &refs_be_files, submodule);
- for (refs = submodule_ref_caches; refs; refs = refs->next)
- if (!strcmp(submodule, refs->name))
- return refs;
- return NULL;
+ return ref_store;
}
/*
- * Return a pointer to a ref_cache for the specified submodule. For
- * the main repository, use submodule==NULL; such a call cannot fail.
- * For a submodule, the submodule must exist and be a nonbare
- * repository, otherwise return NULL.
- *
- * The returned structure will be allocated and initialized but not
- * necessarily populated; it should not be freed.
+ * Downcast ref_store to files_ref_store. Die if ref_store is not a
+ * files_ref_store. If submodule_allowed is not true, then also die if
+ * files_ref_store is for a submodule (i.e., not for the main
+ * repository). caller is used in any necessary error messages.
*/
-static struct ref_cache *get_ref_cache(const char *submodule)
+static struct files_ref_store *files_downcast(
+ struct ref_store *ref_store, int submodule_allowed,
+ const char *caller)
{
- struct ref_cache *refs = lookup_ref_cache(submodule);
+ if (ref_store->be != &refs_be_files)
+ die("BUG: ref_store is type \"%s\" not \"files\" in %s",
+ ref_store->be->name, caller);
- if (!refs) {
- struct strbuf submodule_sb = STRBUF_INIT;
+ if (!submodule_allowed)
+ assert_main_repository(ref_store, caller);
- strbuf_addstr(&submodule_sb, submodule);
- if (is_nonbare_repository_dir(&submodule_sb))
- refs = create_ref_cache(submodule);
- strbuf_release(&submodule_sb);
- }
-
- return refs;
+ return (struct files_ref_store *)ref_store;
}
/* The length of a peeled reference line in packed-refs, including EOL: */
}
/*
- * Get the packed_ref_cache for the specified ref_cache, creating it
- * if necessary.
+ * Get the packed_ref_cache for the specified files_ref_store,
+ * creating it if necessary.
*/
-static struct packed_ref_cache *get_packed_ref_cache(struct ref_cache *refs)
+static struct packed_ref_cache *get_packed_ref_cache(struct files_ref_store *refs)
{
char *packed_refs_file;
- if (*refs->name)
- packed_refs_file = git_pathdup_submodule(refs->name, "packed-refs");
+ if (*refs->base.submodule)
+ packed_refs_file = git_pathdup_submodule(refs->base.submodule,
+ "packed-refs");
else
packed_refs_file = git_pathdup("packed-refs");
return get_ref_dir(packed_ref_cache->root);
}
-static struct ref_dir *get_packed_refs(struct ref_cache *refs)
+static struct ref_dir *get_packed_refs(struct files_ref_store *refs)
{
return get_packed_ref_dir(get_packed_ref_cache(refs));
}
* lock_packed_refs()). To actually write the packed-refs file, call
* commit_packed_refs().
*/
-static void add_packed_ref(const char *refname, const unsigned char *sha1)
+static void add_packed_ref(struct files_ref_store *refs,
+ const char *refname, const unsigned char *sha1)
{
- struct packed_ref_cache *packed_ref_cache =
- get_packed_ref_cache(&ref_cache);
+ struct packed_ref_cache *packed_ref_cache = get_packed_ref_cache(refs);
if (!packed_ref_cache->lock)
die("internal error: packed refs not locked");
*/
static void read_loose_refs(const char *dirname, struct ref_dir *dir)
{
- struct ref_cache *refs = dir->ref_cache;
+ struct files_ref_store *refs = dir->ref_store;
DIR *d;
struct dirent *de;
int dirnamelen = strlen(dirname);
struct strbuf refname;
struct strbuf path = STRBUF_INIT;
size_t path_baselen;
+ int err = 0;
- if (*refs->name)
- strbuf_git_path_submodule(&path, refs->name, "%s", dirname);
+ if (*refs->base.submodule)
+ err = strbuf_git_path_submodule(&path, refs->base.submodule, "%s", dirname);
else
strbuf_git_path(&path, "%s", dirname);
path_baselen = path.len;
+ if (err) {
+ strbuf_release(&path);
+ return;
+ }
+
d = opendir(path.buf);
if (!d) {
strbuf_release(&path);
} else {
int read_ok;
- if (*refs->name) {
+ if (*refs->base.submodule) {
hashclr(sha1);
flag = 0;
- read_ok = !resolve_gitlink_ref(refs->name,
+ read_ok = !resolve_gitlink_ref(refs->base.submodule,
refname.buf, sha1);
} else {
read_ok = !read_ref_full(refname.buf,
closedir(d);
}
-static struct ref_dir *get_loose_refs(struct ref_cache *refs)
+static struct ref_dir *get_loose_refs(struct files_ref_store *refs)
{
if (!refs->loose) {
/*
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 ref_cache refs. Find <refname> in the
- * packed-refs file for the submodule.
- */
-static int resolve_gitlink_packed_ref(struct ref_cache *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 ref_cache *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->name
- ? git_pathdup_submodule(refs->name, "%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), retval;
- struct strbuf submodule = STRBUF_INIT;
- struct ref_cache *refs;
-
- while (len && path[len-1] == '/')
- len--;
- if (!len)
- return -1;
-
- strbuf_add(&submodule, path, len);
- refs = get_ref_cache(submodule.buf);
- if (!refs) {
- strbuf_release(&submodule);
- return -1;
- }
- strbuf_release(&submodule);
-
- retval = resolve_gitlink_ref_recursive(refs, refname, sha1, 0);
- return retval;
-}
-
/*
* 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)
{
- return find_ref(get_packed_refs(&ref_cache), refname);
+ 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,
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. */
REMOVE_DIR_EMPTY_ONLY)) {
if (verify_refname_available_dir(
refname, extras, skip,
- get_loose_refs(&ref_cache),
+ get_loose_refs(refs),
err)) {
/*
* The error message set by
*/
if (verify_refname_available_dir(
refname, extras, skip,
- get_packed_refs(&ref_cache),
+ get_packed_refs(refs),
err)) {
goto error_return;
}
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;
int ok;
while ((ok = ref_iterator_advance(iter->iter0)) == ITER_OK) {
+ if (iter->flags & DO_FOR_EACH_PER_WORKTREE_ONLY &&
+ ref_type(iter->iter0->refname) != REF_TYPE_PER_WORKTREE)
+ continue;
+
if (!(iter->flags & DO_FOR_EACH_INCLUDE_BROKEN) &&
!ref_resolves_to_object(iter->iter0->refname,
iter->iter0->oid,
files_ref_iterator_abort
};
-struct ref_iterator *files_ref_iterator_begin(
- const char *submodule,
+static struct ref_iterator *files_ref_iterator_begin(
+ struct ref_store *ref_store,
const char *prefix, unsigned int flags)
{
- struct ref_cache *refs = get_ref_cache(submodule);
+ struct files_ref_store *refs =
+ files_downcast(ref_store, 1, "ref_iterator_begin");
struct ref_dir *loose_dir, *packed_dir;
struct ref_iterator *loose_iter, *packed_iter;
struct files_ref_iterator *iter;
return remove_dir_recursively(path, REMOVE_DIR_EMPTY_ONLY);
}
+static int create_reflock(const char *path, void *cb)
+{
+ struct lock_file *lk = cb;
+
+ return hold_lock_file_for_update(lk, path, LOCK_NO_DEREF) < 0 ? -1 : 0;
+}
+
/*
* 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,
struct strbuf ref_file = STRBUF_INIT;
struct ref_lock *lock;
int last_errno = 0;
- int lflags = LOCK_NO_DEREF;
int mustexist = (old_sha1 && !is_null_sha1(old_sha1));
int resolve_flags = RESOLVE_REF_NO_RECURSE;
- int attempts_remaining = 3;
int resolved;
+ assert_main_repository(&refs->base, "lock_ref_sha1_basic");
assert(err);
lock = xcalloc(1, sizeof(struct ref_lock));
*/
if (remove_empty_directories(&ref_file)) {
last_errno = errno;
- if (!verify_refname_available_dir(refname, extras, skip,
- get_loose_refs(&ref_cache), err))
+ if (!verify_refname_available_dir(
+ refname, extras, skip,
+ get_loose_refs(refs), err))
strbuf_addf(err, "there are still refs under '%s'",
refname);
goto error_return;
if (!resolved) {
last_errno = errno;
if (last_errno != ENOTDIR ||
- !verify_refname_available_dir(refname, extras, skip,
- get_loose_refs(&ref_cache), err))
+ !verify_refname_available_dir(
+ refname, extras, skip,
+ get_loose_refs(refs), err))
strbuf_addf(err, "unable to resolve reference '%s': %s",
refname, strerror(last_errno));
*/
if (is_null_oid(&lock->old_oid) &&
verify_refname_available_dir(refname, extras, skip,
- get_packed_refs(&ref_cache), err)) {
+ get_packed_refs(refs),
+ err)) {
last_errno = ENOTDIR;
goto error_return;
}
lock->ref_name = xstrdup(refname);
- retry:
- switch (safe_create_leading_directories_const(ref_file.buf)) {
- case SCLD_OK:
- break; /* success */
- case SCLD_VANISHED:
- if (--attempts_remaining > 0)
- goto retry;
- /* fall through */
- default:
+ if (raceproof_create_file(ref_file.buf, create_reflock, lock->lk)) {
last_errno = errno;
- strbuf_addf(err, "unable to create directory for '%s'",
- ref_file.buf);
+ unable_to_lock_message(ref_file.buf, errno, err);
goto error_return;
}
- if (hold_lock_file_for_update(lock->lk, ref_file.buf, lflags) < 0) {
- last_errno = errno;
- if (errno == ENOENT && --attempts_remaining > 0)
- /*
- * Maybe somebody just deleted one of the
- * directories leading to ref_file. Try
- * again:
- */
- goto retry;
- else {
- unable_to_lock_message(ref_file.buf, errno, err);
- goto error_return;
- }
- }
if (verify_lock(lock, old_sha1, mustexist, err)) {
last_errno = errno;
goto error_return;
* 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)
{
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;
* this will automatically invalidate the cache and re-read
* the packed-refs file.
*/
- packed_ref_cache = get_packed_ref_cache(&ref_cache);
+ packed_ref_cache = get_packed_ref_cache(refs);
packed_ref_cache->lock = &packlock;
/* Increment the reference count to prevent it from being freed: */
acquire_packed_ref_cache(packed_ref_cache);
* 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 packed_ref_cache *packed_ref_cache =
- get_packed_ref_cache(&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 packed_ref_cache *packed_ref_cache =
- get_packed_ref_cache(&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);
packed_ref_cache->lock = NULL;
release_packed_ref_cache(packed_ref_cache);
- clear_packed_ref_cache(&ref_cache);
+ clear_packed_ref_cache(refs);
}
struct ref_to_prune {
/*
* Remove empty parents, but spare refs/ and immediate subdirs.
- * Note: munges *name.
*/
-static void try_remove_empty_parents(char *name)
+static void try_remove_empty_parents(const char *refname)
{
+ struct strbuf buf = STRBUF_INIT;
char *p, *q;
int i;
- p = name;
+
+ strbuf_addstr(&buf, refname);
+ p = buf.buf;
for (i = 0; i < 2; i++) { /* refs/{heads,tags,...}/ */
while (*p && *p != '/')
p++;
while (*p == '/')
p++;
}
- for (q = p; *q; q++)
- ;
+ q = buf.buf + buf.len;
while (1) {
while (q > p && *q != '/')
q--;
q--;
if (q == p)
break;
- *q = '\0';
- if (rmdir(git_path("%s", name)))
+ strbuf_setlen(&buf, q - buf.buf);
+ if (rmdir(git_path("%s", buf.buf)))
break;
}
+ strbuf_release(&buf);
}
/* make sure nobody touched the ref, and unlink */
}
}
-int pack_refs(unsigned int flags)
+static int files_pack_refs(struct ref_store *ref_store, unsigned int flags)
{
+ struct files_ref_store *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);
- cbdata.packed_refs = get_packed_refs(&ref_cache);
+ lock_packed_refs(refs, LOCK_DIE_ON_ERROR);
+ cbdata.packed_refs = get_packed_refs(refs);
- do_for_each_entry_in_dir(get_loose_refs(&ref_cache), 0,
+ 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 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;
}
- packed = get_packed_refs(&ref_cache);
+ packed = get_packed_refs(refs);
/* Remove refnames from the cache */
for_each_string_list_item(refname, refnames)
* 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));
return ret;
}
-static int delete_ref_loose(struct ref_lock *lock, int flag, struct strbuf *err)
-{
- assert(err);
-
- if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {
- /*
- * loose. The loose file name is the same as the
- * lockfile name, minus ".lock":
- */
- char *loose_filename = get_locked_file_path(lock->lk);
- int res = unlink_or_msg(loose_filename, err);
- free(loose_filename);
- if (res)
- return 1;
- }
- return 0;
-}
-
-int delete_refs(struct string_list *refnames, unsigned int flags)
+static int files_delete_refs(struct ref_store *ref_store,
+ struct string_list *refnames, unsigned int flags)
{
+ struct files_ref_store *refs =
+ files_downcast(ref_store, 0, "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
*/
#define TMP_RENAMED_LOG "logs/refs/.tmp-renamed-log"
-static int rename_tmp_log(const char *newrefname)
+static int rename_tmp_log_callback(const char *path, void *cb)
{
- int attempts_remaining = 4;
- struct strbuf path = STRBUF_INIT;
- int ret = -1;
+ int *true_errno = cb;
- retry:
- strbuf_reset(&path);
- strbuf_git_path(&path, "logs/%s", newrefname);
- switch (safe_create_leading_directories_const(path.buf)) {
- case SCLD_OK:
- break; /* success */
- case SCLD_VANISHED:
- if (--attempts_remaining > 0)
- goto retry;
- /* fall through */
- default:
- error("unable to create directory for %s", newrefname);
- goto out;
+ if (rename(git_path(TMP_RENAMED_LOG), path)) {
+ /*
+ * rename(a, b) when b is an existing directory ought
+ * to result in ISDIR, but Solaris 5.8 gives ENOTDIR.
+ * Sheesh. Record the true errno for error reporting,
+ * but report EISDIR to raceproof_create_file() so
+ * that it knows to retry.
+ */
+ *true_errno = errno;
+ if (errno == ENOTDIR)
+ errno = EISDIR;
+ return -1;
+ } else {
+ return 0;
}
+}
- if (rename(git_path(TMP_RENAMED_LOG), path.buf)) {
- if ((errno==EISDIR || errno==ENOTDIR) && --attempts_remaining > 0) {
- /*
- * rename(a, b) when b is an existing
- * directory ought to result in ISDIR, but
- * Solaris 5.8 gives ENOTDIR. Sheesh.
- */
- if (remove_empty_directories(&path)) {
- error("Directory not empty: logs/%s", newrefname);
- goto out;
- }
- goto retry;
- } else if (errno == ENOENT && --attempts_remaining > 0) {
- /*
- * Maybe another process just deleted one of
- * the directories in the path to newrefname.
- * Try again from the beginning.
- */
- goto retry;
- } else {
- error("unable to move logfile "TMP_RENAMED_LOG" to logs/%s: %s",
- newrefname, strerror(errno));
- goto out;
- }
+static int rename_tmp_log(const char *newrefname)
+{
+ char *path = git_pathdup("logs/%s", newrefname);
+ int ret, true_errno;
+
+ ret = raceproof_create_file(path, rename_tmp_log_callback, &true_errno);
+ if (ret) {
+ if (errno == EISDIR)
+ error("directory not empty: %s", path);
+ else
+ error("unable to move logfile %s to %s: %s",
+ git_path(TMP_RENAMED_LOG), path,
+ strerror(true_errno));
}
- ret = 0;
-out:
- strbuf_release(&path);
+
+ free(path);
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 ref_dir *packed_refs = get_packed_refs(&ref_cache);
- struct ref_dir *loose_refs = get_loose_refs(&ref_cache);
+ struct files_ref_store *refs =
+ 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);
if (verify_refname_available_dir(newname, extras, skip,
packed_refs, err) ||
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)
+static int files_rename_ref(struct ref_store *ref_store,
+ const char *oldrefname, const char *newrefname,
+ const char *logmsg)
{
+ struct files_ref_store *refs =
+ files_downcast(ref_store, 0, "rename_ref");
unsigned char sha1[20], orig_sha1[20];
int flag = 0, logmoved = 0;
struct ref_lock *lock;
if (!read_ref_full(newrefname, RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
sha1, NULL) &&
delete_ref(newrefname, NULL, REF_NODEREF)) {
- if (errno==EISDIR) {
+ if (errno == EISDIR) {
struct strbuf path = STRBUF_INIT;
int result;
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);
}
return 0;
}
+static int open_or_create_logfile(const char *path, void *cb)
+{
+ int *fd = cb;
+
+ *fd = open(path, O_APPEND | O_WRONLY | O_CREAT, 0666);
+ return (*fd < 0) ? -1 : 0;
+}
+
/*
- * Create a reflog for a ref. If force_create = 0, the reflog will
- * only be created for certain refs (those for which
- * should_autocreate_reflog returns non-zero. Otherwise, create it
- * regardless of the ref name. Fill in *err and return -1 on failure.
+ * Create a reflog for a ref. If force_create = 0, only create the
+ * reflog for certain refs (those for which should_autocreate_reflog
+ * returns non-zero). Otherwise, create it regardless of the reference
+ * name. If the logfile already existed or was created, return 0 and
+ * set *logfd to the file descriptor opened for appending to the file.
+ * If no logfile exists and we decided not to create one, return 0 and
+ * set *logfd to -1. On failure, fill in *err, set *logfd to -1, and
+ * return -1.
*/
-static int log_ref_setup(const char *refname, struct strbuf *logfile, struct strbuf *err, int force_create)
+static int log_ref_setup(const char *refname, int force_create,
+ int *logfd, struct strbuf *err)
{
- int logfd, oflags = O_APPEND | O_WRONLY;
+ char *logfile = git_pathdup("logs/%s", refname);
- strbuf_git_path(logfile, "logs/%s", refname);
if (force_create || should_autocreate_reflog(refname)) {
- if (safe_create_leading_directories(logfile->buf) < 0) {
- strbuf_addf(err, "unable to create directory for '%s': "
- "%s", logfile->buf, strerror(errno));
- return -1;
- }
- oflags |= O_CREAT;
- }
-
- logfd = open(logfile->buf, oflags, 0666);
- if (logfd < 0) {
- if (!(oflags & O_CREAT) && (errno == ENOENT || errno == EISDIR))
- return 0;
+ if (raceproof_create_file(logfile, open_or_create_logfile, logfd)) {
+ if (errno == ENOENT)
+ strbuf_addf(err, "unable to create directory for '%s': "
+ "%s", logfile, strerror(errno));
+ else if (errno == EISDIR)
+ strbuf_addf(err, "there are still logs under '%s'",
+ logfile);
+ else
+ strbuf_addf(err, "unable to append to '%s': %s",
+ logfile, strerror(errno));
- if (errno == EISDIR) {
- if (remove_empty_directories(logfile)) {
- strbuf_addf(err, "there are still logs under "
- "'%s'", logfile->buf);
- return -1;
- }
- logfd = open(logfile->buf, oflags, 0666);
+ goto error;
}
-
- if (logfd < 0) {
- strbuf_addf(err, "unable to append to '%s': %s",
- logfile->buf, strerror(errno));
- return -1;
+ } else {
+ *logfd = open(logfile, O_APPEND | O_WRONLY, 0666);
+ if (*logfd < 0) {
+ if (errno == ENOENT || errno == EISDIR) {
+ /*
+ * The logfile doesn't already exist,
+ * but that is not an error; it only
+ * means that we won't write log
+ * entries to it.
+ */
+ ;
+ } else {
+ strbuf_addf(err, "unable to append to '%s': %s",
+ logfile, strerror(errno));
+ goto error;
+ }
}
}
- adjust_shared_perm(logfile->buf);
- close(logfd);
+ if (*logfd >= 0)
+ adjust_shared_perm(logfile);
+
+ free(logfile);
return 0;
-}
+error:
+ free(logfile);
+ return -1;
+}
-int safe_create_reflog(const char *refname, int force_create, struct strbuf *err)
+static int files_create_reflog(struct ref_store *ref_store,
+ const char *refname, int force_create,
+ struct strbuf *err)
{
- int ret;
- struct strbuf sb = STRBUF_INIT;
+ int fd;
- ret = log_ref_setup(refname, &sb, err, force_create);
- strbuf_release(&sb);
- return ret;
+ /* Check validity (but we don't need the result): */
+ files_downcast(ref_store, 0, "create_reflog");
+
+ if (log_ref_setup(refname, force_create, &fd, err))
+ return -1;
+
+ if (fd >= 0)
+ close(fd);
+
+ return 0;
}
static int log_ref_write_fd(int fd, const unsigned char *old_sha1,
return 0;
}
-static int log_ref_write_1(const char *refname, const unsigned char *old_sha1,
- const unsigned char *new_sha1, const char *msg,
- struct strbuf *logfile, int flags,
- struct strbuf *err)
+int files_log_ref_write(const char *refname, const unsigned char *old_sha1,
+ const unsigned char *new_sha1, const char *msg,
+ int flags, struct strbuf *err)
{
- int logfd, result, oflags = O_APPEND | O_WRONLY;
+ int logfd, result;
if (log_all_ref_updates < 0)
log_all_ref_updates = !is_bare_repository();
- result = log_ref_setup(refname, logfile, err, flags & REF_FORCE_CREATE_REFLOG);
+ result = log_ref_setup(refname, flags & REF_FORCE_CREATE_REFLOG,
+ &logfd, err);
if (result)
return result;
- logfd = open(logfile->buf, oflags);
if (logfd < 0)
return 0;
result = log_ref_write_fd(logfd, old_sha1, new_sha1,
git_committer_info(0), msg);
if (result) {
- strbuf_addf(err, "unable to append to '%s': %s", logfile->buf,
- strerror(errno));
+ int save_errno = errno;
+
+ strbuf_addf(err, "unable to append to '%s': %s",
+ git_path("logs/%s", refname), strerror(save_errno));
close(logfd);
return -1;
}
if (close(logfd)) {
- strbuf_addf(err, "unable to append to '%s': %s", logfile->buf,
- strerror(errno));
+ int save_errno = errno;
+
+ strbuf_addf(err, "unable to append to '%s': %s",
+ git_path("logs/%s", refname), strerror(save_errno));
return -1;
}
return 0;
}
-static int log_ref_write(const char *refname, const unsigned char *old_sha1,
- const unsigned char *new_sha1, const char *msg,
- int flags, struct strbuf *err)
-{
- return files_log_ref_write(refname, old_sha1, new_sha1, msg, flags,
- err);
-}
-
-int files_log_ref_write(const char *refname, const unsigned char *old_sha1,
- const unsigned char *new_sha1, const char *msg,
- int flags, struct strbuf *err)
-{
- struct strbuf sb = STRBUF_INIT;
- int ret = log_ref_write_1(refname, old_sha1, new_sha1, msg, &sb, flags,
- err);
- strbuf_release(&sb);
- return ret;
-}
-
/*
* Write sha1 into the open lockfile, then close the lockfile. On
* errors, rollback the lockfile, fill in *err and
* 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)
{
- clear_loose_ref_cache(&ref_cache);
- if (log_ref_write(lock->ref_name, lock->old_oid.hash, sha1, logmsg, 0, err)) {
+ assert_main_repository(&refs->base, "commit_ref_update");
+
+ clear_loose_ref_cache(refs);
+ if (files_log_ref_write(lock->ref_name, lock->old_oid.hash, sha1,
+ logmsg, 0, err)) {
char *old_msg = strbuf_detach(err, NULL);
strbuf_addf(err, "cannot update the ref '%s': %s",
lock->ref_name, old_msg);
if (head_ref && (head_flag & REF_ISSYMREF) &&
!strcmp(head_ref, lock->ref_name)) {
struct strbuf log_err = STRBUF_INIT;
- if (log_ref_write("HEAD", lock->old_oid.hash, sha1,
+ if (files_log_ref_write("HEAD", lock->old_oid.hash, sha1,
logmsg, 0, &log_err)) {
error("%s", log_err.buf);
strbuf_release(&log_err);
struct strbuf err = STRBUF_INIT;
unsigned char new_sha1[20];
if (logmsg && !read_ref(target, new_sha1) &&
- log_ref_write(refname, lock->old_oid.hash, new_sha1, logmsg, 0, &err)) {
+ files_log_ref_write(refname, lock->old_oid.hash, new_sha1,
+ logmsg, 0, &err)) {
error("%s", err.buf);
strbuf_release(&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);
return ret;
}
-int reflog_exists(const char *refname)
+static int files_reflog_exists(struct ref_store *ref_store,
+ const char *refname)
{
struct stat st;
+ /* Check validity (but we don't need the result): */
+ files_downcast(ref_store, 0, "reflog_exists");
+
return !lstat(git_path("logs/%s", refname), &st) &&
S_ISREG(st.st_mode);
}
-int delete_reflog(const char *refname)
+static int files_delete_reflog(struct ref_store *ref_store,
+ const char *refname)
{
+ /* Check validity (but we don't need the result): */
+ files_downcast(ref_store, 0, "delete_reflog");
+
return remove_path(git_path("logs/%s", refname));
}
return scan;
}
-int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, void *cb_data)
+static int files_for_each_reflog_ent_reverse(struct ref_store *ref_store,
+ const char *refname,
+ each_reflog_ent_fn fn,
+ void *cb_data)
{
struct strbuf sb = STRBUF_INIT;
FILE *logfp;
long pos;
int ret = 0, at_tail = 1;
+ /* Check validity (but we don't need the result): */
+ files_downcast(ref_store, 0, "for_each_reflog_ent_reverse");
+
logfp = fopen(git_path("logs/%s", refname), "r");
if (!logfp)
return -1;
return ret;
}
-int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, void *cb_data)
+static int files_for_each_reflog_ent(struct ref_store *ref_store,
+ const char *refname,
+ each_reflog_ent_fn fn, void *cb_data)
{
FILE *logfp;
struct strbuf sb = STRBUF_INIT;
int ret = 0;
+ /* Check validity (but we don't need the result): */
+ files_downcast(ref_store, 0, "for_each_reflog_ent");
+
logfp = fopen(git_path("logs/%s", refname), "r");
if (!logfp)
return -1;
files_reflog_iterator_abort
};
-struct ref_iterator *files_reflog_iterator_begin(void)
+static struct ref_iterator *files_reflog_iterator_begin(struct ref_store *ref_store)
{
struct files_reflog_iterator *iter = xcalloc(1, sizeof(*iter));
struct ref_iterator *ref_iterator = &iter->base;
+ /* Check validity (but we don't need the result): */
+ files_downcast(ref_store, 0, "reflog_iterator_begin");
+
base_ref_iterator_init(ref_iterator, &files_reflog_iterator_vtable);
iter->dir_iterator = dir_iterator_begin(git_path("logs"));
return ref_iterator;
}
-int for_each_reflog(each_ref_fn fn, void *cb_data)
-{
- return do_for_each_ref_iterator(files_reflog_iterator_begin(),
- fn, cb_data);
-}
-
static int ref_update_reject_duplicates(struct string_list *refnames,
struct strbuf *err)
{
* 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,
+ &lock, &referent,
&update->type, err);
-
if (ret) {
char *reason;
return ret;
}
- lock = update->lock;
+ update->backend_data = lock;
if (update->type & REF_ISSYMREF) {
if (update->flags & REF_NODEREF) {
* 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;
for (parent_update = update->parent_update;
parent_update;
parent_update = parent_update->parent_update) {
- oidcpy(&parent_update->lock->old_oid, &lock->old_oid);
+ struct ref_lock *parent_lock = parent_update->backend_data;
+ oidcpy(&parent_lock->old_oid, &lock->old_oid);
}
}
* The lock was freed upon failure of
* write_ref_to_lockfile():
*/
- update->lock = NULL;
+ update->backend_data = NULL;
strbuf_addf(err,
"cannot update ref '%s': %s",
update->refname, write_err);
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 =
+ 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;
}
/* Perform updates first so live commits remain referenced */
for (i = 0; i < transaction->nr; i++) {
struct ref_update *update = transaction->updates[i];
- struct ref_lock *lock = update->lock;
+ struct ref_lock *lock = update->backend_data;
if (update->flags & REF_NEEDS_COMMIT ||
update->flags & REF_LOG_ONLY) {
- if (log_ref_write(lock->ref_name, lock->old_oid.hash,
- update->new_sha1,
- update->msg, update->flags, err)) {
+ if (files_log_ref_write(lock->ref_name,
+ lock->old_oid.hash,
+ update->new_sha1,
+ update->msg, update->flags,
+ err)) {
char *old_msg = strbuf_detach(err, NULL);
strbuf_addf(err, "cannot update the ref '%s': %s",
lock->ref_name, old_msg);
free(old_msg);
unlock_ref(lock);
- update->lock = NULL;
+ update->backend_data = NULL;
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
}
if (update->flags & REF_NEEDS_COMMIT) {
- clear_loose_ref_cache(&ref_cache);
+ clear_loose_ref_cache(refs);
if (commit_ref(lock)) {
strbuf_addf(err, "couldn't set '%s'", lock->ref_name);
unlock_ref(lock);
- update->lock = NULL;
+ update->backend_data = NULL;
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
/* Perform deletes now that updates are safely completed */
for (i = 0; i < transaction->nr; i++) {
struct ref_update *update = transaction->updates[i];
+ struct ref_lock *lock = update->backend_data;
if (update->flags & REF_DELETING &&
!(update->flags & REF_LOG_ONLY)) {
- if (delete_ref_loose(update->lock, update->type, err)) {
- ret = TRANSACTION_GENERIC_ERROR;
- goto cleanup;
+ if (!(update->type & REF_ISPACKED) ||
+ update->type & REF_ISSYMREF) {
+ /* It is a loose reference. */
+ if (unlink_or_msg(git_path("%s", lock->ref_name), err)) {
+ ret = TRANSACTION_GENERIC_ERROR;
+ goto cleanup;
+ }
}
if (!(update->flags & REF_ISPRUNING))
string_list_append(&refs_to_delete,
- update->lock->ref_name);
+ lock->ref_name);
}
}
- if (repack_without_refs(&refs_to_delete, err)) {
+ if (repack_without_refs(refs, &refs_to_delete, err)) {
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
for_each_string_list_item(ref_to_delete, &refs_to_delete)
unlink_or_warn(git_path("logs/%s", ref_to_delete->string));
- clear_loose_ref_cache(&ref_cache);
+ clear_loose_ref_cache(refs);
cleanup:
transaction->state = REF_TRANSACTION_CLOSED;
for (i = 0; i < transaction->nr; i++)
- if (transaction->updates[i]->lock)
- unlock_ref(transaction->updates[i]->lock);
+ if (transaction->updates[i]->backend_data)
+ unlock_ref(transaction->updates[i]->backend_data);
string_list_clear(&refs_to_delete, 0);
free(head_ref);
string_list_clear(&affected_refnames, 0);
return string_list_has_string(affected_refnames, refname);
}
-int initial_ref_transaction_commit(struct ref_transaction *transaction,
- struct strbuf *err)
+static int files_initial_transaction_commit(struct ref_store *ref_store,
+ struct ref_transaction *transaction,
+ struct strbuf *err)
{
+ struct files_ref_store *refs =
+ files_downcast(ref_store, 0, "initial_ref_transaction_commit");
int ret = 0, i;
struct string_list affected_refnames = STRING_LIST_INIT_NODUP;
}
}
- 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;
if ((update->flags & REF_HAVE_NEW) &&
!is_null_sha1(update->new_sha1))
- add_packed_ref(update->refname, update->new_sha1);
+ 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;
return 0;
}
-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)
+static int files_reflog_expire(struct ref_store *ref_store,
+ 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)
{
+ struct files_ref_store *refs =
+ files_downcast(ref_store, 0, "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);
unlock_ref(lock);
return -1;
}
+
+static int files_init_db(struct ref_store *ref_store, struct strbuf *err)
+{
+ /* Check validity (but we don't need the result): */
+ files_downcast(ref_store, 0, "init_db");
+
+ /*
+ * Create .git/refs/{heads,tags}
+ */
+ safe_create_dir(git_path("refs/heads"), 1);
+ safe_create_dir(git_path("refs/tags"), 1);
+ if (get_shared_repository()) {
+ adjust_shared_perm(git_path("refs/heads"));
+ adjust_shared_perm(git_path("refs/tags"));
+ }
+ return 0;
+}
+
+struct ref_storage_be refs_be_files = {
+ NULL,
+ "files",
+ files_ref_store_create,
+ files_init_db,
+ files_transaction_commit,
+ files_initial_transaction_commit,
+
+ files_pack_refs,
+ files_peel_ref,
+ files_create_symref,
+ files_delete_refs,
+ files_rename_ref,
+
+ files_ref_iterator_begin,
+ files_read_raw_ref,
+ files_verify_refname_available,
+
+ files_reflog_iterator_begin,
+ files_for_each_reflog_ent,
+ files_for_each_reflog_ent_reverse,
+ files_reflog_exists,
+ files_create_reflog,
+ files_delete_reflog,
+ files_reflog_expire
+};