diff options
| author | David S. Miller <davem@davemloft.net> | 2011-04-17 16:48:53 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-04-17 16:48:53 -0700 |
| commit | 81b424d9e2ef815b2035d4c2be0bc41dddbebc06 (patch) | |
| tree | 7b2b1b0cc42a43b6fffac0b1e208c04e3574bfc8 /drivers/isdn/mISDN | |
| parent | 07f46f80f4ca4ddb700ff40a19876ba1b3242917 (diff) | |
isdn: mISDN: socket: Fix set-but-unused variables.
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>
Diffstat (limited to 'drivers/isdn/mISDN')
| -rw-r--r-- | 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 7446d8b4282..8e325227b4c 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) |