diff options
Diffstat (limited to 'net/unix/diag.c')
| -rw-r--r-- | net/unix/diag.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/net/unix/diag.c b/net/unix/diag.c index 0e0fda786af..24c7a65d9cb 100644 --- a/net/unix/diag.c +++ b/net/unix/diag.c @@ -63,6 +63,41 @@ rtattr_failure: return -EMSGSIZE; } +static int sk_diag_dump_icons(struct sock *sk, struct sk_buff *nlskb) +{ + struct sk_buff *skb; + u32 *buf; + int i; + + if (sk->sk_state == TCP_LISTEN) { + spin_lock(&sk->sk_receive_queue.lock); + buf = UNIX_DIAG_PUT(nlskb, UNIX_DIAG_ICONS, sk->sk_receive_queue.qlen); + i = 0; + skb_queue_walk(&sk->sk_receive_queue, skb) { + struct sock *req, *peer; + + req = skb->sk; + /* + * The state lock is outer for the same sk's + * queue lock. With the other's queue locked it's + * OK to lock the state. + */ + unix_state_lock_nested(req); + peer = unix_sk(req)->peer; + if (peer) + buf[i++] = sock_i_ino(peer); + unix_state_unlock(req); + } + spin_unlock(&sk->sk_receive_queue.lock); + } + + return 0; + +rtattr_failure: + spin_unlock(&sk->sk_receive_queue.lock); + return -EMSGSIZE; +} + static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_req *req, u32 pid, u32 seq, u32 flags, int sk_ino) { @@ -93,6 +128,10 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_r sk_diag_dump_peer(sk, skb)) goto nlmsg_failure; + if ((req->udiag_show & UDIAG_SHOW_ICONS) && + sk_diag_dump_icons(sk, skb)) + goto nlmsg_failure; + nlh->nlmsg_len = skb_tail_pointer(skb) - b; return skb->len; |