git-cvsserver: detect/diagnose write failure, etc.

[git.git] / builtin-update-ref.c

diff --git a/builtin-update-ref.c b/builtin-update-ref.c
index b34e5987dd256e0b7d9fae46fe89f66dd18ad91f..feac2ed12d22dcd23db5823cd32a0f9f1c1c974a 100644 (file)
--- a/builtin-update-ref.c
+++ b/builtin-update-ref.c
@@ -3,17 +3,17 @@
 #include "builtin.h"
 
 static const char git_update_ref_usage[] =
-"git-update-ref [-m <reason>] (-d <refname> <value> | <refname> <value> [<oldval>])";
+"git-update-ref [-m <reason>] (-d <refname> <value> | [--no-deref] <refname> <value> [<oldval>])";
 
 int cmd_update_ref(int argc, const char **argv, const char *prefix)
 {
        const char *refname=NULL, *value=NULL, *oldval=NULL, *msg=NULL;
        struct ref_lock *lock;
        unsigned char sha1[20], oldsha1[20];
-       int i, delete;
+       int i, delete, ref_flags;
 
        delete = 0;
-       setup_ident();
+       ref_flags = 0;
        git_config(git_default_config);
 
        for (i = 1; i < argc; i++) {
@@ -31,6 +31,10 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
                        delete = 1;
                        continue;
                }
+               if (!strcmp("--no-deref", argv[i])) {
+                       ref_flags |= REF_NODEREF;
+                       continue;
+               }
                if (!refname) {
                        refname = argv[i];
                        continue;
@@ -60,12 +64,10 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
        if (oldval && *oldval && get_sha1(oldval, oldsha1))
                die("%s: not a valid old SHA1", oldval);
 
-       lock = lock_any_ref_for_update(refname, oldval ? oldsha1 : NULL);
+       lock = lock_any_ref_for_update(refname, oldval ? oldsha1 : NULL, ref_flags);
        if (!lock)
-               return 1;
+               die("%s: cannot lock the ref", refname);
        if (write_ref_sha1(lock, sha1, msg) < 0)
-               return 1;
-
-       /* write_ref_sha1 always unlocks the ref, no need to do it explicitly */
+               die("%s: cannot update the ref", refname);
        return 0;
 }