Function for updating refs.

A function intended to be called from builtins updating refs
by locking them before write, specially those that came from
scripts using "git update-ref".

[jc: with minor fixups]

Signed-off-by: Carlos Rica <jasampler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 8 insertions, 13 deletions

diff --git a/builtin-fetch--tool.c b/builtin-fetch--tool.c
index e2f8ede9a..24c7e6f7d 100644
--- a/builtin-fetch--tool.c
+++ b/builtin-fetch--tool.c
@@ -31,24 +31,19 @@ static void show_new(enum object_type type, unsigned char *sha1_new)
 		find_unique_abbrev(sha1_new, DEFAULT_ABBREV));
 }
 
-static int update_ref(const char *action,
+static int update_ref_env(const char *action,
 		      const char *refname,
 		      unsigned char *sha1,
 		      unsigned char *oldval)
 {
 	char msg[1024];
 	char *rla = getenv("GIT_REFLOG_ACTION");
-	static struct ref_lock *lock;
 
 	if (!rla)
 		rla = "(reflog update)";
-	snprintf(msg, sizeof(msg), "%s: %s", rla, action);
-	lock = lock_any_ref_for_update(refname, oldval, 0);
-	if (!lock)
-		return 1;
-	if (write_ref_sha1(lock, sha1, msg) < 0)
-		return 1;
-	return 0;
+	if (snprintf(msg, sizeof(msg), "%s: %s", rla, action) >= sizeof(msg))
+		warning("reflog message too long: %.*s...", 50, msg);
+	return update_ref(msg, refname, sha1, oldval, 0, QUIET_ON_ERR);
 }
 
 static int update_local_ref(const char *name,
@@ -88,7 +83,7 @@ static int update_local_ref(const char *name,
 		fprintf(stderr, "* %s: storing %s\n",
 			name, note);
 		show_new(type, sha1_new);
-		return update_ref(msg, name, sha1_new, NULL);
+		return update_ref_env(msg, name, sha1_new, NULL);
 	}
 
 	if (!hashcmp(sha1_old, sha1_new)) {
@@ -102,7 +97,7 @@ static int update_local_ref(const char *name,
 	if (!strncmp(name, "refs/tags/", 10)) {
 		fprintf(stderr, "* %s: updating with %s\n", name, note);
 		show_new(type, sha1_new);
-		return update_ref("updating tag", name, sha1_new, NULL);
+		return update_ref_env("updating tag", name, sha1_new, NULL);
 	}
 
 	current = lookup_commit_reference(sha1_old);
@@ -117,7 +112,7 @@ static int update_local_ref(const char *name,
 		fprintf(stderr, "* %s: fast forward to %s\n",
 			name, note);
 		fprintf(stderr, "  old..new: %s..%s\n", oldh, newh);
-		return update_ref("fast forward", name, sha1_new, sha1_old);
+		return update_ref_env("fast forward", name, sha1_new, sha1_old);
 	}
 	if (!force) {
 		fprintf(stderr,
@@ -131,7 +126,7 @@ static int update_local_ref(const char *name,
 		"* %s: forcing update to non-fast forward %s\n",
 		name, note);
 	fprintf(stderr, "  old...new: %s...%s\n", oldh, newh);
-	return update_ref("forced-update", name, sha1_new, sha1_old);
+	return update_ref_env("forced-update", name, sha1_new, sha1_old);
 }
 
 static int append_fetch_head(FILE *fp,