From f7decc6b2316e7c24ef39966f2defc441814f11b Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Thu, 24 Feb 2005 01:07:09 +0000
Subject: r5532: Patch to detect infinite loops when traversing a tdb from
 "Shlomi Yaakobovich" <Shlomi@exanet.com> Jeremy. (This used to be commit
 f997c28bb8ca253dca943a578a617b3c20ccfa5e)

---
 source3/tdb/tdb.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'source3')

diff --git a/source3/tdb/tdb.c b/source3/tdb/tdb.c
index 45895d2ec7..b3d596f442 100644
--- a/source3/tdb/tdb.c
+++ b/source3/tdb/tdb.c
@@ -1272,6 +1272,13 @@ static int tdb_next_lock(TDB_CONTEXT *tdb, struct tdb_traverse_lock *tlock,
 					goto fail;
 				return tlock->off;
 			}
+
+			/* Detect infinite loops. From "Shlomi Yaakobovich" <Shlomi@exanet.com>. */
+			if (tlock->off == rec->next) {
+				TDB_LOG((tdb, 0, "tdb_next_lock: loop detected.\n"));
+				goto fail;
+			}
+
 			/* Try to clean dead ones from old traverses */
 			current = tlock->off;
 			tlock->off = rec->next;
-- 
cgit