netdev - [PATCH net-next 26/28] tipc: Simplify prohibition of listen and accept for connectionless sockets

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Sat, 17 Sep 2011 23:32:22 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, allan.stephens@...driver.com,
	ying.xue@...driver.com,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [PATCH net-next 26/28] tipc: Simplify prohibition of listen and accept for connectionless sockets

From: Ying Xue <ying.xue@...driver.com>

Modifies the proto_ops structure used by TIPC DGRAM and RDM sockets
so that calls to listen() and accept() are handled by existing kernel
"unsupported operation" routines, and eliminates the related checks
in the listen and accept routines used by SEQPACKET and STREAM sockets
that are no longer needed.

Signed-off-by: Ying Xue <ying.xue@...driver.com>
Signed-off-by: Allan Stephens <allan.stephens@...driver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 net/tipc/socket.c |   12 +++---------
 1 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 2f90beb..9440a3d 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1483,9 +1483,7 @@ static int listen(struct socket *sock, int len)
 
 	lock_sock(sk);
 
-	if (sock->state == SS_READY)
-		res = -EOPNOTSUPP;
-	else if (sock->state != SS_UNCONNECTED)
+	if (sock->state != SS_UNCONNECTED)
 		res = -EINVAL;
 	else {
 		sock->state = SS_LISTENING;
@@ -1513,10 +1511,6 @@ static int accept(struct socket *sock, struct socket *new_sock, int flags)
 
 	lock_sock(sk);
 
-	if (sock->state == SS_READY) {
-		res = -EOPNOTSUPP;
-		goto exit;
-	}
 	if (sock->state != SS_LISTENING) {
 		res = -EINVAL;
 		goto exit;
@@ -1793,11 +1787,11 @@ static const struct proto_ops msg_ops = {
 	.bind		= bind,
 	.connect	= connect,
 	.socketpair	= sock_no_socketpair,
-	.accept		= accept,
+	.accept		= sock_no_accept,
 	.getname	= get_name,
 	.poll		= poll,
 	.ioctl		= sock_no_ioctl,
-	.listen		= listen,
+	.listen		= sock_no_listen,
 	.shutdown	= shutdown,
 	.setsockopt	= setsockopt,
 	.getsockopt	= getsockopt,
-- 
1.7.4.4

--
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