tdb: TDB_INCOMPATIBLE_HASH, to allow safe changing of default hash.

[ccan] / ccan / tdb / tdb.h

diff --git a/ccan/tdb/tdb.h b/ccan/tdb/tdb.h
index 7fa9517038469e38569c738421746d717ab674fb..020cf050b803cd02db67d7d34aaa7cd8e042da33 100644 (file)
--- a/ccan/tdb/tdb.h
+++ b/ccan/tdb/tdb.h
@@ -57,6 +57,7 @@ extern "C" {
 #define TDB_VOLATILE   256 /* Activate the per-hashchain freelist, default 5 */
 #define TDB_ALLOW_NESTING 512 /* Allow transactions to nest */
 #define TDB_DISALLOW_NESTING 1024 /* Disallow transactions to nest */
+#define TDB_INCOMPATIBLE_HASH 2048 /* Better hashing: can't be opened by older tdb versions. */
 
 /* error codes */
 enum TDB_ERROR {TDB_SUCCESS=0, TDB_ERR_CORRUPT, TDB_ERR_IO, TDB_ERR_LOCK, 
@@ -132,7 +133,6 @@ int tdb_lockall_read_nonblock(struct tdb_context *tdb);
 int tdb_unlockall_read(struct tdb_context *tdb);
 int tdb_lockall_mark(struct tdb_context *tdb);
 int tdb_lockall_unmark(struct tdb_context *tdb);
-int tdb_lockall_gradual(struct tdb_context *tdb);
 const char *tdb_name(struct tdb_context *tdb);
 int tdb_fd(struct tdb_context *tdb);
 tdb_log_func tdb_log_fn(struct tdb_context *tdb);
@@ -150,6 +150,7 @@ void tdb_add_flags(struct tdb_context *tdb, unsigned flag);
 void tdb_remove_flags(struct tdb_context *tdb, unsigned flag);
 void tdb_enable_seqnum(struct tdb_context *tdb);
 void tdb_increment_seqnum_nonblock(struct tdb_context *tdb);
+unsigned int tdb_jenkins_hash(TDB_DATA *key);
 int tdb_check(struct tdb_context *tdb,
              int (*check)(TDB_DATA key, TDB_DATA data, void *private),
              void *private);