Merge branch 'jn/web'

[git.git] / refs.c

diff --git a/refs.c b/refs.c
index 09a2c87fc23e4298bb3bcddc5c2cc649c3206a04..7fb3350789a407e36dc74418b79508e9bf916594 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -1455,3 +1455,30 @@ int for_each_reflog(each_ref_fn fn, void *cb_data)
 {
        return do_for_each_reflog("", fn, cb_data);
 }
+
+int update_ref(const char *action, const char *refname,
+               const unsigned char *sha1, const unsigned char *oldval,
+               int flags, enum action_on_err onerr)
+{
+       static struct ref_lock *lock;
+       lock = lock_any_ref_for_update(refname, oldval, flags);
+       if (!lock) {
+               const char *str = "Cannot lock the ref '%s'.";
+               switch (onerr) {
+               case MSG_ON_ERR: error(str, refname); break;
+               case DIE_ON_ERR: die(str, refname); break;
+               case QUIET_ON_ERR: break;
+               }
+               return 1;
+       }
+       if (write_ref_sha1(lock, sha1, action) < 0) {
+               const char *str = "Cannot update the ref '%s'.";
+               switch (onerr) {
+               case MSG_ON_ERR: error(str, refname); break;
+               case DIE_ON_ERR: die(str, refname); break;
+               case QUIET_ON_ERR: break;
+               }
+               return 1;
+       }
+       return 0;
+}