tdb2: add TDB_RDONLY flag, allow setting/unsetting it.

[ccan] / ccan / tdb2 / tdb2.h

diff --git a/ccan/tdb2/tdb2.h b/ccan/tdb2/tdb2.h
index 5643ef4f8a1e2aeae9736dc8a18fbe29380b7ca8..051d20a411d8e2d2e71675b05f000a33dff749ae 100644 (file)
--- a/ccan/tdb2/tdb2.h
+++ b/ccan/tdb2/tdb2.h
@@ -85,6 +85,7 @@ struct tdb_context *tdb_open(const char *name, int tdb_flags,
 #define TDB_NOSYNC   64 /* don't use synchronous transactions */
 #define TDB_SEQNUM   128 /* maintain a sequence number */
 #define TDB_ALLOW_NESTING   256 /* fake nested transactions */
+#define TDB_RDONLY   512 /* implied by O_RDONLY */
 
 /**
  * tdb_close - close and free a tdb.