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Commit 6273172e authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo Committed by David S. Miller
Browse files

[DCCP]: Implement SIOCINQ/FIONREAD 



Just like UDP.

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarLeandro Melo de Sales <leandroal@gmail.com>
Signed-off-by: default avatarIan McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bada339b

net/dccp/proto.c

+31 −2
Original line number Diff line number Diff line
@@ -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);