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fetch.c: change s_update_ref to use a ref transaction

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Change s_update_ref to use a ref transaction for the ref update.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ronnie Sahlberg 2014-04-28 13:49:07 -07:00 committed by Junio C Hamano
parent 28e6a97e39
commit cd94f76572
1 changed files with 24 additions and 10 deletions
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34
builtin/fetch.c
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@ -404,23 +404,37 @@ static int s_update_ref(const char *action,
{
char msg[1024];
char *rla = getenv("GIT_REFLOG_ACTION");
static struct ref_lock *lock;
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
int ret, df_conflict = 0;
if (dry_run)
return 0;
if (!rla)
rla = default_rla.buf;
snprintf(msg, sizeof(msg), "%s: %s", rla, action);
lock = lock_any_ref_for_update(ref->name,
check_old ? ref->old_sha1 : NULL,
0, NULL);
if (!lock)
return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
STORE_REF_ERROR_OTHER;
if (write_ref_sha1(lock, ref->new_sha1, msg) < 0)
return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
STORE_REF_ERROR_OTHER;
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, ref->name, ref->new_sha1,
ref->old_sha1, 0, check_old, msg, &err))
goto fail;
ret = ref_transaction_commit(transaction, &err);
if (ret) {
df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
goto fail;
}
ref_transaction_free(transaction);
strbuf_release(&err);
return 0;
fail:
ref_transaction_free(transaction);
error("%s", err.buf);
strbuf_release(&err);
return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
: STORE_REF_ERROR_OTHER;
}
#define REFCOL_WIDTH 10