netdev - [PATCH 30/72] netfilter: unregister nf hooks, matches and targets in the reverse order

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1287674399-31455-31-git-send-email-kaber@trash.net>
Date:	Thu, 21 Oct 2010 17:19:17 +0200
From:	kaber@...sh.net
To:	davem@...emloft.net
Cc:	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 30/72] netfilter: unregister nf hooks, matches and targets in the reverse order

From: Changli Gao <xiaosuo@...il.com>

Since we register nf hooks, matches and targets in order, we'd better
unregister them in the reverse order.

Signed-off-by: Changli Gao <xiaosuo@...il.com>
Signed-off-by: Patrick McHardy <kaber@...sh.net>
---
 net/netfilter/core.c     |    6 ++----
 net/netfilter/x_tables.c |   12 ++++--------
 2 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 78b505d..8f014f2 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -105,10 +105,8 @@ EXPORT_SYMBOL(nf_register_hooks);
 
 void nf_unregister_hooks(struct nf_hook_ops *reg, unsigned int n)
 {
-	unsigned int i;
-
-	for (i = 0; i < n; i++)
-		nf_unregister_hook(&reg[i]);
+	while (n-- > 0)
+		nf_unregister_hook(&reg[n]);
 }
 EXPORT_SYMBOL(nf_unregister_hooks);
 
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index e34622f..8046350 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -116,10 +116,8 @@ EXPORT_SYMBOL(xt_register_targets);
 void
 xt_unregister_targets(struct xt_target *target, unsigned int n)
 {
-	unsigned int i;
-
-	for (i = 0; i < n; i++)
-		xt_unregister_target(&target[i]);
+	while (n-- > 0)
+		xt_unregister_target(&target[n]);
 }
 EXPORT_SYMBOL(xt_unregister_targets);
 
@@ -174,10 +172,8 @@ EXPORT_SYMBOL(xt_register_matches);
 void
 xt_unregister_matches(struct xt_match *match, unsigned int n)
 {
-	unsigned int i;
-
-	for (i = 0; i < n; i++)
-		xt_unregister_match(&match[i]);
+	while (n-- > 0)
+		xt_unregister_match(&match[n]);
 }
 EXPORT_SYMBOL(xt_unregister_matches);
 
-- 
1.7.1

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html