tdb: add Bob Jenkins lookup3 hash as helper hash.

[ccan] / ccan / tdb / open.c

diff --git a/ccan/tdb/open.c b/ccan/tdb/open.c
index aa32a45eda3957aa04e8c9444a9ba2bd749b1207..95f8f4c940116fa8f64eec4a7cd57ba9c72644b0 100644 (file)
--- a/ccan/tdb/open.c
+++ b/ccan/tdb/open.c
@@ -30,20 +30,6 @@
 /* all contexts, to ensure no double-opens (fcntl locks don't nest!) */
 static struct tdb_context *tdbs = NULL;
 
-
-/* This is based on the hash algorithm from gdbm */
-static unsigned int default_tdb_hash(TDB_DATA *key)
-{
-       uint32_t value; /* Used to compute the hash value.  */
-       uint32_t   i;   /* Used to cycle through random values. */
-
-       /* Set the initial value from the key size. */
-       for (value = 0x238F13AF * key->dsize, i=0; i < key->dsize; i++)
-               value = (value + (key->dptr[i] << (i*5 % 24)));
-
-       return (1103515243 * value + 12345);  
-}
-
 /* We use two hashes to double-check they're using the right hash function. */
 void tdb_header_hash(struct tdb_context *tdb,
                     uint32_t *magic1_hash, uint32_t *magic2_hash)
@@ -206,7 +192,7 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
                tdb->hash_fn = hash_fn;
                hash_alg = "user defined";
        } else {
-               tdb->hash_fn = default_tdb_hash;
+               tdb->hash_fn = tdb_old_hash;
                hash_alg = "default";
        }