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Phonet: hook resource routing to userspace via ioctl()'s 

I wish we could use something cleaner, such as bind(). But that would
not work since resource subscription is orthogonal/in addition to the
normal object ID allocated via bind(). This is similar to multicasting
which also uses ioctl()'s.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rémi Denis-Courmont 2010-09-15 12:30:12 +00:00 committed by David S. Miller
parent 4e3d16ce5e
commit 7417fa83c1
3 changed files with 16 additions and 0 deletions
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2
include/linux/phonet.h
View File

@ -47,6 +47,8 @@
/* ioctls */
#define SIOCPNGETOBJECT (SIOCPROTOPRIVATE + 0)
#define SIOCPNADDRESOURCE (SIOCPROTOPRIVATE + 14)
#define SIOCPNDELRESOURCE (SIOCPROTOPRIVATE + 15)
/* Phonet protocol header */
struct phonethdr {

13
net/phonet/datagram.c
View File

@ -52,6 +52,19 @@ static int pn_ioctl(struct sock *sk, int cmd, unsigned long arg)
answ = skb ? skb->len : 0;
release_sock(sk);
return put_user(answ, (int __user *)arg);
case SIOCPNADDRESOURCE:
case SIOCPNDELRESOURCE: {
u32 res;
if (get_user(res, (u32 __user *)arg))
return -EFAULT;
if (res >= 256)
return -EINVAL;
if (cmd == SIOCPNADDRESOURCE)
return pn_sock_bind_res(sk, res);
else
return pn_sock_unbind_res(sk, res);
}
}
return -ENOIOCTLCMD;

1
net/phonet/socket.c
View File

@ -158,6 +158,7 @@ void pn_sock_unhash(struct sock *sk)
spin_lock_bh(&pnsocks.lock);
sk_del_node_init(sk);
spin_unlock_bh(&pnsocks.lock);
pn_sock_unbind_all_res(sk);
}
EXPORT_SYMBOL(pn_sock_unhash);