From: David Miller <davem@davemloft.net>
To: netdev@vger.kernel.org
Subject: [PATCH 29/42] isdn: mISDN: socket: Fix set-but-unused variables.
Date: Sun, 17 Apr 2011 17:33:59 -0700 (PDT) [thread overview]
Message-ID: <20110417.173359.68128347.davem@davemloft.net> (raw)
The variable 'len' is set but unused in data_sock_getsockopt().
The code should use 'len' to validate that the user's socket option is
indeed the right size.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/isdn/mISDN/socket.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index 7446d8b..8e32522 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -457,6 +457,9 @@ static int data_sock_getsockopt(struct socket *sock, int level, int optname,
if (get_user(len, optlen))
return -EFAULT;
+ if (len != sizeof(char))
+ return -EINVAL;
+
switch (optname) {
case MISDN_TIME_STAMP:
if (_pms(sk)->cmask & MISDN_TIME_STAMP)
--
1.7.4.3
reply other threads:[~2011-04-18 0:34 UTC|newest]
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