refs: lock symref that is to be deleted, not its target

When delete_ref is called on a symref then it locks its target and then
either deletes the target or the symref, depending on whether the flag
REF_NODEREF was set in the parameter delopt.

Instead, simply pass the flag to lock_ref_sha1_basic, which will then
either lock the target or the symref, and delete the locked ref.

This reimplements part of eca35a25 (Fix git branch -m for symrefs.).

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs.c b/refs.c
index da74a2b29a20a2c94fef61641e35980007c1ab95..9d1685bcba4ca0381dd9d0990a97046b56324aed 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -1753,26 +1753,18 @@ int delete_ref(const char *refname, const unsigned char *sha1, int delopt)
        struct ref_lock *lock;
        int err, i = 0, ret = 0, flag = 0;
 
-       lock = lock_ref_sha1_basic(refname, sha1, 0, &flag);
+       lock = lock_ref_sha1_basic(refname, sha1, delopt, &flag);
        if (!lock)
                return 1;
        if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {
                /* loose */
-               const char *path;
-
-               if (!(delopt & REF_NODEREF)) {
-                       i = strlen(lock->lk->filename) - 5; /* .lock */
-                       lock->lk->filename[i] = 0;
-                       path = lock->lk->filename;
-               } else {
-                       path = git_path("%s", refname);
-               }
-               err = unlink_or_warn(path);
+               i = strlen(lock->lk->filename) - 5; /* .lock */
+               lock->lk->filename[i] = 0;
+               err = unlink_or_warn(lock->lk->filename);
                if (err && errno != ENOENT)
                        ret = 1;
 
-               if (!(delopt & REF_NODEREF))
-                       lock->lk->filename[i] = '.';
+               lock->lk->filename[i] = '.';
        }
        /* removing the loose one could have resurrected an earlier
         * packed one.  Also, if it was not loose we need to repack