tdb: introduce tdb_chainlock_read_nonblock(), a nonblock variant of tdb_chainlock_read()

[samba.git] / lib / tdb / common / lock.c

diff --git a/lib/tdb/common/lock.c b/lib/tdb/common/lock.c
index 6644c4034e05c13d602fe0c54c13afa4b3f08e4e..195dbb5daf265c8d8f997a3ccdd81fe7b642945c 100644 (file)
--- a/lib/tdb/common/lock.c
+++ b/lib/tdb/common/lock.c
@@ -858,6 +858,13 @@ _PUBLIC_ int tdb_chainunlock_read(struct tdb_context *tdb, TDB_DATA key)
        return tdb_unlock(tdb, BUCKET(tdb->hash_fn(&key)), F_RDLCK);
 }
 
+_PUBLIC_ int tdb_chainlock_read_nonblock(struct tdb_context *tdb, TDB_DATA key)
+{
+       int ret = tdb_lock_nonblock(tdb, BUCKET(tdb->hash_fn(&key)), F_RDLCK);
+       tdb_trace_1rec_ret(tdb, "tdb_chainlock_read_nonblock", key, ret);
+       return ret;
+}
+
 /* record lock stops delete underneath */
 int tdb_lock_record(struct tdb_context *tdb, tdb_off_t off)
 {