From 89b93a44d1ce24ec208ee244f7e5b1689fc6ff1a Mon Sep 17 00:00:00 2001
From: Pavel Březina <pbrezina@redhat.com>
Date: Thu, 11 Oct 2012 10:37:38 +0200
Subject: nss_cmd_retpwent(): do not go into infinite loop if n < 0

https://fedorahosted.org/sssd/ticket/1551
---
 src/responder/nss/nsssrv_cmd.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/responder/nss/nsssrv_cmd.c')

diff --git a/src/responder/nss/nsssrv_cmd.c b/src/responder/nss/nsssrv_cmd.c
index 370c3d29..26a34736 100644
--- a/src/responder/nss/nsssrv_cmd.c
+++ b/src/responder/nss/nsssrv_cmd.c
@@ -1618,6 +1618,14 @@ static int nss_cmd_retpwent(struct cli_ctx *cctx, int num)
 
         if (!n) break;
 
+        if (n < 0) {
+            DEBUG(SSSDBG_CRIT_FAILURE, ("BUG: Negative difference"
+                  "[%d - %d = %d]\n", pdom->res->count, cctx->pwent_cur, n));
+            DEBUG(SSSDBG_CRIT_FAILURE, ("Domain: %d (total %d)\n",
+                                        cctx->pwent_dom_idx, pctx->num));
+            break;
+        }
+
         if (n > num) n = num;
 
         msgs = &(pdom->res->msgs[cctx->pwent_cur]);
-- 
cgit