static int getsockopt(struct socket *sock,
int lvl, int opt, char __user *ov, int __user *ol)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
int len;
u32 value;
int res;
if ((lvl == IPPROTO_TCP) && (sock->type == SOCK_STREAM))
return put_user(0, ol);
if (lvl != SOL_TIPC)
return -ENOPROTOOPT;
if ((res = get_user(len, ol)))
return res;
lock_sock(sk);
switch (opt) {
case TIPC_IMPORTANCE:
res = tipc_portimportance(tport->ref, &value);
break;
case TIPC_SRC_DROPPABLE:
res = tipc_portunreliable(tport->ref, &value);
break;
case TIPC_DEST_DROPPABLE:
res = tipc_portunreturnable(tport->ref, &value);
break;
case TIPC_CONN_TIMEOUT:
value = jiffies_to_msecs(tipc_sk(sk)->conn_timeout);
/* no need to set "res", since already 0 at this point */
break;
case TIPC_NODE_RECVQ_DEPTH:
value = (u32)atomic_read(&tipc_queue_size);
break;
case TIPC_SOCK_RECVQ_DEPTH:
value = skb_queue_len(&sk->sk_receive_queue);
break;
default:
res = -EINVAL;
}
release_sock(sk);
if (res) {
/* "get" failed */
}
else if (len < sizeof(value)) {
res = -EINVAL;
}
else if (copy_to_user(ov, &value, sizeof(value))) {
res = -EFAULT;
}
else {
res = put_user(sizeof(value), ol);
}
return res;
}
static int getsockopt(struct socket *sock,
int lvl, int opt, char __user *ov, int __user *ol)
{
struct tipc_sock *tsock = tipc_sk(sock->sk);
int len;
u32 value;
int res;
if ((lvl == IPPROTO_TCP) && (sock->type == SOCK_STREAM))
return put_user(0, ol);
if (lvl != SOL_TIPC)
return -ENOPROTOOPT;
if ((res = get_user(len, ol)))
return res;
if (down_interruptible(&tsock->sem))
return -ERESTARTSYS;
switch (opt) {
case TIPC_IMPORTANCE:
res = tipc_portimportance(tsock->p->ref, &value);
break;
case TIPC_SRC_DROPPABLE:
res = tipc_portunreliable(tsock->p->ref, &value);
break;
case TIPC_DEST_DROPPABLE:
res = tipc_portunreturnable(tsock->p->ref, &value);
break;
case TIPC_CONN_TIMEOUT:
value = (sock->sk->sk_rcvtimeo * 1000) / HZ;
break;
default:
res = -EINVAL;
}
if (res) {
/* "get" failed */
}
else if (len < sizeof(value)) {
res = -EINVAL;
}
else if ((res = copy_to_user(ov, &value, sizeof(value)))) {
/* couldn't return value */
}
else {
res = put_user(sizeof(value), ol);
}
up(&tsock->sem);
return res;
}
