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refs/files-backend: convert static functions to object_id 

Convert several static functions to take pointers to struct object_id.
Change the relevant parameters to write_packed_entry to be const, as we
don't modify them.  Rename lock_ref_sha1_basic to lock_ref_oid_basic to
reflect its new argument.  Update the docstring for verify lock to
account for the new parameter name, and note additionally that the
old_oid may be NULL.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson 2017-10-15 22:07:12 +00:00 committed by Junio C Hamano
parent 99afe91a6c
commit 4f01e5080c
1 changed files with 28 additions and 28 deletions
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56
refs/files-backend.c
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@ -770,13 +770,13 @@ static struct ref_iterator *files_ref_iterator_begin(
}
/*
* Verify that the reference locked by lock has the value old_sha1.
* 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.
* 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 unsigned char *old_sha1, int mustexist,
const struct object_id *old_oid, int mustexist,
struct strbuf *err)
{
assert(err);
@ -784,7 +784,7 @@ static int verify_lock(struct ref_store *ref_store, struct ref_lock *lock,
if (refs_read_ref_full(ref_store, lock->ref_name,
mustexist ? RESOLVE_REF_READING : 0,
&lock->old_oid, NULL)) {
if (old_sha1) {
if (old_oid) {
int save_errno = errno;
strbuf_addf(err, "can't verify ref '%s'", lock->ref_name);
errno = save_errno;
@ -794,11 +794,11 @@ static int verify_lock(struct ref_store *ref_store, struct ref_lock *lock,
return 0;
}
}
if (old_sha1 && hashcmp(lock->old_oid.hash, old_sha1)) {
if (old_oid && oidcmp(&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),
sha1_to_hex(old_sha1));
oid_to_hex(old_oid));
errno = EBUSY;
return -1;
}
@ -828,22 +828,22 @@ static int create_reflock(const char *path, void *cb)
* 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(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)
static struct ref_lock *lock_ref_oid_basic(struct files_ref_store *refs,
const char *refname,
const struct object_id *old_oid,
const struct string_list *extras,
const struct string_list *skip,
unsigned int flags, int *type,
struct strbuf *err)
{
struct strbuf ref_file = STRBUF_INIT;
struct ref_lock *lock;
int last_errno = 0;
int mustexist = (old_sha1 && !is_null_sha1(old_sha1));
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_sha1_basic");
files_assert_main_repository(refs, "lock_ref_oid_basic");
assert(err);
lock = xcalloc(1, sizeof(struct ref_lock));
@ -909,7 +909,7 @@ static struct ref_lock *lock_ref_sha1_basic(struct files_ref_store *refs,
goto error_return;
}
if (verify_lock(&refs->base, lock, old_sha1, mustexist, err)) {
if (verify_lock(&refs->base, lock, old_oid, mustexist, err)) {
last_errno = errno;
goto error_return;
}
@ -1324,8 +1324,8 @@ static int files_copy_or_rename_ref(struct ref_store *ref_store,
logmoved = log;
lock = lock_ref_sha1_basic(refs, newrefname, NULL, NULL, NULL,
REF_NODEREF, NULL, &err);
lock = lock_ref_oid_basic(refs, newrefname, NULL, NULL, NULL,
REF_NODEREF, NULL, &err);
if (!lock) {
if (copy)
error("unable to copy '%s' to '%s': %s", oldrefname, newrefname, err.buf);
@ -1347,8 +1347,8 @@ static int files_copy_or_rename_ref(struct ref_store *ref_store,
goto out;
rollback:
lock = lock_ref_sha1_basic(refs, oldrefname, NULL, NULL, NULL,
REF_NODEREF, NULL, &err);
lock = lock_ref_oid_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);
@ -1763,9 +1763,9 @@ static int files_create_symref(struct ref_store *ref_store,
struct ref_lock *lock;
int ret;
lock = lock_ref_sha1_basic(refs, refname, NULL,
NULL, NULL, REF_NODEREF, NULL,
&err);
lock = lock_ref_oid_basic(refs, refname, NULL,
NULL, NULL, REF_NODEREF, NULL,
&err);
if (!lock) {
error("%s", err.buf);
strbuf_release(&err);
@ -2937,9 +2937,9 @@ 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_sha1_basic(refs, refname, oid->hash,
NULL, NULL, REF_NODEREF,
&type, &err);
lock = lock_ref_oid_basic(refs, refname, oid,
NULL, NULL, REF_NODEREF,
&type, &err);
if (!lock) {
error("cannot lock ref '%s': %s", refname, err.buf);
strbuf_release(&err);