From 05212658baef695448a22f43250c1268fe3310e3 Mon Sep 17 00:00:00 2001
From: Volker Lendecke <vl@samba.org>
Date: Thu, 25 Oct 2018 15:59:48 +0200
Subject: [PATCH] tdb: Do early RDONLY error check for tdb_delete

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
---
 lib/tdb/common/tdb.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/tdb/common/tdb.c b/lib/tdb/common/tdb.c
index 4e433c89e1e..2a6d8977002 100644
--- a/lib/tdb/common/tdb.c
+++ b/lib/tdb/common/tdb.c
@@ -463,6 +463,11 @@ static int tdb_delete_hash(struct tdb_context *tdb, TDB_DATA key, uint32_t hash)
 	struct tdb_record rec;
 	int ret;
 
+	if (tdb->read_only || tdb->traverse_read) {
+		tdb->ecode = TDB_ERR_RDONLY;
+		return -1;
+	}
+
 	rec_ptr = tdb_find_lock_hash(tdb, key, hash, F_WRLCK, &rec);
 	if (rec_ptr == 0) {
 		return -1;