diff options
| -rw-r--r-- | net/dccp/proto.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/net/dccp/proto.c b/net/dccp/proto.c index cc9bf1cb264..d8497392803 100644 --- a/net/dccp/proto.c +++ b/net/dccp/proto.c @@ -26,6 +26,7 @@ #include <net/sock.h> #include <net/xfrm.h> +#include <asm/ioctls.h> #include <asm/semaphore.h> #include <linux/spinlock.h> #include <linux/timer.h> @@ -378,8 +379,36 @@ EXPORT_SYMBOL_GPL(dccp_poll); int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg) { - dccp_pr_debug("entry\n"); - return -ENOIOCTLCMD; + int rc = -ENOTCONN; + + lock_sock(sk); + + if (sk->sk_state == DCCP_LISTEN) + goto out; + + switch (cmd) { + case SIOCINQ: { + struct sk_buff *skb; + unsigned long amount = 0; + + skb = skb_peek(&sk->sk_receive_queue); + if (skb != NULL) { + /* + * We will only return the amount of this packet since + * that is all that will be read. + */ + amount = skb->len; + } + rc = put_user(amount, (int __user *)arg); + } + break; + default: + rc = -ENOIOCTLCMD; + break; + } +out: + release_sock(sk); + return rc; } EXPORT_SYMBOL_GPL(dccp_ioctl); |