diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2007-10-24 07:23:30 +0400 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-24 08:27:50 +0400 |
| commit | 6273172e1772bf5ce8697bcae145f0f2954fd159 (patch) | |
| tree | 2c521a8065621d641768d8fa52e6a073cd916929 | |
| parent | bada339ba24dee9e143bfb42e1dc61f146619846 (diff) | |
| download | linux-6273172e1772bf5ce8697bcae145f0f2954fd159.tar.xz | |
[DCCP]: Implement SIOCINQ/FIONREAD
Just like UDP.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Leandro Melo de Sales <leandroal@gmail.com>
Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -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 cc9bf1cb2646..d84973928033 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); |