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-rw-r--r--net/dccp/proto.c52
1 files changed, 48 insertions, 4 deletions
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index f4da656..18a0e69 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -205,23 +205,67 @@ int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg)
int dccp_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen)
{
- dccp_pr_debug("entry\n");
+ struct dccp_sock *dp;
+ int err;
+ int val;
if (level != SOL_DCCP)
return ip_setsockopt(sk, level, optname, optval, optlen);
- return -EOPNOTSUPP;
+ if (optlen < sizeof(int))
+ return -EINVAL;
+
+ if (get_user(val, (int __user *)optval))
+ return -EFAULT;
+
+ lock_sock(sk);
+
+ dp = dccp_sk(sk);
+ err = 0;
+
+ switch (optname) {
+ case DCCP_SOCKOPT_PACKET_SIZE:
+ dp->dccps_packet_size = val;
+ break;
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
}
int dccp_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
- dccp_pr_debug("entry\n");
+ struct dccp_sock *dp;
+ int val, len;
if (level != SOL_DCCP)
return ip_getsockopt(sk, level, optname, optval, optlen);
- return -EOPNOTSUPP;
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ len = min_t(unsigned int, len, sizeof(int));
+ if (len < 0)
+ return -EINVAL;
+
+ dp = dccp_sk(sk);
+
+ switch (optname) {
+ case DCCP_SOCKOPT_PACKET_SIZE:
+ val = dp->dccps_packet_size;
+ break;
+ default:
+ return -ENOPROTOOPT;
+ }
+
+ if (put_user(len, optlen) || copy_to_user(optval, &val, len))
+ return -EFAULT;
+
+ return 0;
}
int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
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