X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftdb2%2Ftraverse.c;h=71a889e5de472a76cae1f1e7769e343f53d36ea7;hp=5217f63b80b9b68a463c0f85174f59b362ba0070;hb=a97da100b00206544c7a68593b64a49f2b854f7e;hpb=b21004624683be5bf1d8f75e3b5be4e9618049ee

diff --git a/ccan/tdb2/traverse.c b/ccan/tdb2/traverse.c
index 5217f63b..71a889e5 100644
--- a/ccan/tdb2/traverse.c
+++ b/ccan/tdb2/traverse.c
@@ -18,7 +18,10 @@
 #include "private.h"
 #include <ccan/likely/likely.h>
 
-int64_t tdb_traverse(struct tdb_context *tdb, tdb_traverse_func fn, void *p)
+int64_t tdb_traverse_(struct tdb_context *tdb,
+		      int (*fn)(struct tdb_context *,
+				TDB_DATA, TDB_DATA, void *),
+		      void *p)
 {
 	enum TDB_ERROR ecode;
 	struct traverse_info tinfo;
@@ -68,3 +71,27 @@ enum TDB_ERROR tdb_nextkey(struct tdb_context *tdb, struct tdb_data *key)
 
 	return next_in_hash(tdb, &tinfo, key, NULL);
 }
+
+static int wipe_one(struct tdb_context *tdb,
+		    TDB_DATA key, TDB_DATA data, enum TDB_ERROR *ecode)
+{
+	*ecode = tdb_delete(tdb, key);
+	return (*ecode != TDB_SUCCESS);
+}
+
+enum TDB_ERROR tdb_wipe_all(struct tdb_context *tdb)
+{
+	enum TDB_ERROR ecode;
+	int64_t count;
+
+	ecode = tdb_allrecord_lock(tdb, F_WRLCK, TDB_LOCK_WAIT, false);
+	if (ecode != TDB_SUCCESS)
+		return ecode;
+
+	/* FIXME: Be smarter. */
+	count = tdb_traverse(tdb, wipe_one, &ecode);
+	if (count < 0)
+		ecode = count;
+	tdb_allrecord_unlock(tdb, F_WRLCK);
+	return ecode;
+}