[PATCH 3/5] refs.c: make lock_packed_refs take an err argument

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Signed-off-by: Ronnie Sahlberg <sahlberg@xxxxxxxxxx>
---
 refs.c | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/refs.c b/refs.c
index 0aad8c8..cfe1292 100644
--- a/refs.c
+++ b/refs.c
@@ -2270,13 +2270,17 @@ static int write_packed_entry_fn(struct ref_entry *entry, void *cb_data)
 	return 0;
 }
 
-/* This should return a meaningful errno on failure */
-static int lock_packed_refs(int flags)
+static int lock_packed_refs(struct strbuf *err)
 {
 	struct packed_ref_cache *packed_ref_cache;
 
-	if (hold_lock_file_for_update(&packlock, git_path("packed-refs"), flags) < 0)
+	if (hold_lock_file_for_update(&packlock, git_path("packed-refs"),
+				      0) < 0) {
+		if (err)
+			unable_to_lock_message(git_path("packed-refs"),
+					       errno, err);
 		return -1;
+	}
 	/*
 	 * Get the current packed-refs while holding the lock.  If the
 	 * packed-refs file has been modified since we last read it,
@@ -2460,11 +2464,14 @@ static void prune_refs(struct ref_to_prune *r)
 int pack_refs(unsigned int flags)
 {
 	struct pack_refs_cb_data cbdata;
+	struct strbuf err = STRBUF_INIT;
 
 	memset(&cbdata, 0, sizeof(cbdata));
 	cbdata.flags = flags;
 
-	lock_packed_refs(LOCK_DIE_ON_ERROR);
+	if (lock_packed_refs(&err))
+		die("%s", err.buf);
+
 	cbdata.packed_refs = get_packed_refs(&ref_cache);
 
 	do_for_each_entry_in_dir(get_loose_refs(&ref_cache), 0,
@@ -3626,10 +3633,7 @@ int transaction_commit(struct ref_transaction *transaction,
 	}
 
 	/* Lock packed refs during commit */
-	if (lock_packed_refs(0)) {
-		if (err)
-			unable_to_lock_message(git_path("packed-refs"),
-					       errno, err);
+	if (lock_packed_refs(err)) {
 		ret = -1;
 		goto cleanup;
 	}
@@ -3684,10 +3688,7 @@ int transaction_commit(struct ref_transaction *transaction,
 			goto cleanup;
 		}
 		/* lock the packed refs again so no one can change it */
-		if (lock_packed_refs(0)) {
-			if (err)
-				unable_to_lock_message(git_path("packed-refs"),
-						       errno, err);
+		if (lock_packed_refs(err)) {
 			ret = -1;
 			goto cleanup;
 		}
-- 
2.0.1.523.g70700c9

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