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refs API: remove refs_read_ref_full() wrapper 

Remove the refs_read_ref_full() wrapper in favor of migrating various
refs.c API users to the underlying refs_werrres_ref_unsafe() function.

A careful reading of these callers shows that the callers of this
function did not care about "errno", by moving away from the
refs_resolve_ref_unsafe() wrapper we can be sure that nothing relies
on it anymore.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason 2021-10-16 11:39:14 +02:00 committed by Junio C Hamano
parent 52106430dc
commit 76887df014
4 changed files with 37 additions and 32 deletions
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22
refs.c
View File

@ -290,18 +290,15 @@ struct ref_filter {
void *cb_data;
};
int refs_read_ref_full(struct ref_store *refs, const char *refname,
int resolve_flags, struct object_id *oid, int *flags)
{
if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, oid, flags))
return 0;
return -1;
}
int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags)
{
return refs_read_ref_full(get_main_ref_store(the_repository), refname,
resolve_flags, oid, flags);
int ignore_errno;
struct ref_store *refs = get_main_ref_store(the_repository);
if (refs_werrres_ref_unsafe(refs, refname, resolve_flags,
oid, flags, &ignore_errno))
return 0;
return -1;
}
int read_ref(const char *refname, struct object_id *oid)
@ -1376,9 +1373,10 @@ int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
{
struct object_id oid;
int flag;
int ignore_errno;
if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING,
&oid, &flag))
if (refs_werrres_ref_unsafe(refs, "HEAD", RESOLVE_REF_READING,
&oid, &flag, &ignore_errno))
return fn("HEAD", &oid, flag, cb_data);
return 0;

2
refs.h
View File

@ -89,8 +89,6 @@ char *refs_resolve_refdup(struct ref_store *refs,
char *resolve_refdup(const char *refname, int resolve_flags,
struct object_id *oid, int *flags);
int refs_read_ref_full(struct ref_store *refs, const char *refname,
int resolve_flags, struct object_id *oid, int *flags);
int read_ref_full(const char *refname, int resolve_flags,
struct object_id *oid, int *flags);
int read_ref(const char *refname, struct object_id *oid);

36
refs/files-backend.c
View File

@ -1006,6 +1006,7 @@ static struct ref_lock *lock_ref_oid_basic(struct files_ref_store *refs,
{
struct strbuf ref_file = STRBUF_INIT;
struct ref_lock *lock;
int ignore_errno;
files_assert_main_repository(refs, "lock_ref_oid_basic");
assert(err);
@ -1032,9 +1033,8 @@ static struct ref_lock *lock_ref_oid_basic(struct files_ref_store *refs,
goto error_return;
}
if (refs_read_ref_full(&refs->base, lock->ref_name,
0,
&lock->old_oid, NULL))
if (!refs_werrres_ref_unsafe(&refs->base, lock->ref_name, 0,
&lock->old_oid, NULL, &ignore_errno))
oidclr(&lock->old_oid);
goto out;
@ -1397,6 +1397,7 @@ static int files_copy_or_rename_ref(struct ref_store *ref_store,
struct strbuf tmp_renamed_log = STRBUF_INIT;
int log, ret;
struct strbuf err = STRBUF_INIT;
int ignore_errno;
files_reflog_path(refs, &sb_oldref, oldrefname);
files_reflog_path(refs, &sb_newref, newrefname);
@ -1454,9 +1455,9 @@ static int files_copy_or_rename_ref(struct ref_store *ref_store,
* the safety anyway; we want to delete the reference whatever
* its current value.
*/
if (!copy && !refs_read_ref_full(&refs->base, newrefname,
RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
NULL, NULL) &&
if (!copy && refs_werrres_ref_unsafe(&refs->base, newrefname,
RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
NULL, NULL, &ignore_errno) &&
refs_delete_ref(&refs->base, NULL, newrefname,
NULL, REF_NO_DEREF)) {
if (errno == EISDIR) {
@ -1868,9 +1869,12 @@ static void update_symref_reflog(struct files_ref_store *refs,
{
struct strbuf err = STRBUF_INIT;
struct object_id new_oid;
int ignore_errno;
if (logmsg &&
!refs_read_ref_full(&refs->base, target,
RESOLVE_REF_READING, &new_oid, NULL) &&
refs_werrres_ref_unsafe(&refs->base, target,
RESOLVE_REF_READING, &new_oid, NULL,
&ignore_errno) &&
files_log_ref_write(refs, refname, &lock->old_oid,
&new_oid, logmsg, 0, &err)) {
error("%s", err.buf);
@ -2144,6 +2148,7 @@ static int files_reflog_iterator_advance(struct ref_iterator *ref_iterator)
(struct files_reflog_iterator *)ref_iterator;
struct dir_iterator *diter = iter->dir_iterator;
int ok;
int ignore_errno;
while ((ok = dir_iterator_advance(diter)) == ITER_OK) {
int flags;
@ -2155,9 +2160,10 @@ static int files_reflog_iterator_advance(struct ref_iterator *ref_iterator)
if (ends_with(diter->basename, ".lock"))
continue;
if (refs_read_ref_full(iter->ref_store,
diter->relative_path, 0,
&iter->oid, &flags)) {
if (!refs_werrres_ref_unsafe(iter->ref_store,
diter->relative_path, 0,
&iter->oid, &flags,
&ignore_errno)) {
error("bad ref for %s", diter->path.buf);
continue;
}
@ -2501,9 +2507,11 @@ static int lock_ref_for_update(struct files_ref_store *refs,
* the transaction, so we have to read it here
* to record and possibly check old_oid:
*/
if (refs_read_ref_full(&refs->base,
referent.buf, 0,
&lock->old_oid, NULL)) {
int ignore_errno;
if (!refs_werrres_ref_unsafe(&refs->base,
referent.buf, 0,
&lock->old_oid, NULL,
&ignore_errno)) {
if (update->flags & REF_HAVE_OLD) {
strbuf_addf(err, "cannot lock ref '%s': "
"error reading reference",

9
worktree.c
View File

@ -563,16 +563,17 @@ int other_head_refs(each_ref_fn fn, void *cb_data)
struct worktree *wt = *p;
struct object_id oid;
int flag;
int ignore_errno;
if (wt->is_current)
continue;
strbuf_reset(&refname);
strbuf_worktree_ref(wt, &refname, "HEAD");
if (!refs_read_ref_full(get_main_ref_store(the_repository),
refname.buf,
RESOLVE_REF_READING,
&oid, &flag))
if (refs_werrres_ref_unsafe(get_main_ref_store(the_repository),
refname.buf,
RESOLVE_REF_READING,
&oid, &flag, &ignore_errno))
ret = fn(refname.buf, &oid, flag, cb_data);
if (ret)
break;