In the preceding commit the last caller that passed a non-NULL OID was
changed to pass NULL to lock_ref_oid_basic(). As noted in preceding
commits use of this API has been going away (we should use ref
transactions, or lock_raw_ref()), so we're unlikely to gain new
callers that want to pass the "oid".
So let's remove it, doing so means we can remove the "mustexist"
condition, and therefore anything except the "flags =
RESOLVE_REF_NO_RECURSE" case.
Furthermore, since the verify_lock() function we called did most of
its work when the "oid" was passed (as "old_oid") we can inline the
trivial part of it that remains in its only remaining caller. Without
a NULL "oid" passed it was equivalent to calling refs_read_ref_full()
followed by oidclr().
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
refs/files-backend.c | 70 +++++++++-----------------------------------
1 file changed, 14 insertions(+), 56 deletions(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index a4adac46443..4f2d907597a 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -852,42 +852,6 @@ static struct ref_iterator *files_ref_iterator_begin(
return ref_iterator;
}
-/*
- * Verify that the reference locked by lock has the value old_oid
- * (unless it is NULL). Fail if the reference doesn't exist and
- * mustexist is set. Return 0 on success. On error, write an error
- * message to err, set errno, and return a negative value.
- */
-static int verify_lock(struct ref_store *ref_store, struct ref_lock *lock,
- const struct object_id *old_oid, int mustexist,
- struct strbuf *err)
-{
- assert(err);
-
- if (refs_read_ref_full(ref_store, lock->ref_name,
- mustexist ? RESOLVE_REF_READING : 0,
- &lock->old_oid, NULL)) {
- if (old_oid) {
- int save_errno = errno;
- strbuf_addf(err, "can't verify ref '%s'", lock->ref_name);
- errno = save_errno;
- return -1;
- } else {
- oidclr(&lock->old_oid);
- return 0;
- }
- }
- if (old_oid && !oideq(&lock->old_oid, old_oid)) {
- strbuf_addf(err, "ref '%s' is at %s but expected %s",
- lock->ref_name,
- oid_to_hex(&lock->old_oid),
- oid_to_hex(old_oid));
- errno = EBUSY;
- return -1;
- }
- return 0;
-}
-
static int remove_empty_directories(struct strbuf *path)
{
/*
@@ -912,15 +876,12 @@ static int create_reflock(const char *path, void *cb)
* On failure errno is set to something meaningful.
*/
static struct ref_lock *lock_ref_oid_basic(struct files_ref_store *refs,
- const char *refname,
- const struct object_id *old_oid,
- int *type, struct strbuf *err)
+ const char *refname, int *type,
+ struct strbuf *err)
{
struct strbuf ref_file = STRBUF_INIT;
struct ref_lock *lock;
int last_errno = 0;
- int mustexist = (old_oid && !is_null_oid(old_oid));
- int resolve_flags = RESOLVE_REF_NO_RECURSE;
int resolved;
files_assert_main_repository(refs, "lock_ref_oid_basic");
@@ -928,12 +889,9 @@ static struct ref_lock *lock_ref_oid_basic(struct files_ref_store *refs,
CALLOC_ARRAY(lock, 1);
- if (mustexist)
- resolve_flags |= RESOLVE_REF_READING;
-
files_ref_path(refs, &ref_file, refname);
- resolved = !!refs_resolve_ref_unsafe(&refs->base,
- refname, resolve_flags,
+ resolved = !!refs_resolve_ref_unsafe(&refs->base, refname,
+ RESOLVE_REF_NO_RECURSE,
&lock->old_oid, type);
if (!resolved && errno == EISDIR) {
/*
@@ -951,8 +909,8 @@ static struct ref_lock *lock_ref_oid_basic(struct files_ref_store *refs,
refname);
goto error_return;
}
- resolved = !!refs_resolve_ref_unsafe(&refs->base,
- refname, resolve_flags,
+ resolved = !!refs_resolve_ref_unsafe(&refs->base, refname,
+ RESOLVE_REF_NO_RECURSE,
&lock->old_oid, type);
}
if (!resolved) {
@@ -987,10 +945,10 @@ static struct ref_lock *lock_ref_oid_basic(struct files_ref_store *refs,
goto error_return;
}
- if (verify_lock(&refs->base, lock, old_oid, mustexist, err)) {
- last_errno = errno;
- goto error_return;
- }
+ if (refs_read_ref_full(&refs->base, lock->ref_name,
+ 0,
+ &lock->old_oid, NULL))
+ oidclr(&lock->old_oid);
goto out;
error_return:
@@ -1409,7 +1367,7 @@ static int files_copy_or_rename_ref(struct ref_store *ref_store,
logmoved = log;
- lock = lock_ref_oid_basic(refs, newrefname, NULL, NULL, &err);
+ lock = lock_ref_oid_basic(refs, newrefname, NULL, &err);
if (!lock) {
if (copy)
error("unable to copy '%s' to '%s': %s", oldrefname, newrefname, err.buf);
@@ -1431,7 +1389,7 @@ static int files_copy_or_rename_ref(struct ref_store *ref_store,
goto out;
rollback:
- lock = lock_ref_oid_basic(refs, oldrefname, NULL, NULL, &err);
+ lock = lock_ref_oid_basic(refs, oldrefname, NULL, &err);
if (!lock) {
error("unable to lock %s for rollback: %s", oldrefname, err.buf);
strbuf_release(&err);
@@ -1838,7 +1796,7 @@ static int files_create_symref(struct ref_store *ref_store,
struct ref_lock *lock;
int ret;
- lock = lock_ref_oid_basic(refs, refname, NULL, NULL, &err);
+ lock = lock_ref_oid_basic(refs, refname, NULL, &err);
if (!lock) {
error("%s", err.buf);
strbuf_release(&err);
@@ -3056,7 +3014,7 @@ static int files_reflog_expire(struct ref_store *ref_store,
* reference itself, plus we might need to update the
* reference if --updateref was specified:
*/
- lock = lock_ref_oid_basic(refs, refname, NULL, &type, &err);
+ lock = lock_ref_oid_basic(refs, refname, &type, &err);
if (!lock) {
error("cannot lock ref '%s': %s", refname, err.buf);
strbuf_release(&err);
--
2.33.0.662.g438caf9576d
