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authorPavel Emelyanov <xemul@openvz.org>2007-10-17 21:21:26 -0700
committerDavid S. Miller <davem@davemloft.net>2007-10-17 21:21:26 -0700
commit55b333253d5bcafbe187b50474e40789301c53c6 (patch)
treedbea170b01196473c95d3d558bfce00bc17187fe /net/core
parentd114f399b4da6fa7f9da3bbf1fb841370c11e788 (diff)
[NET]: Introduce the sk_detach_filter() call
Filter is attached in a separate function, so do the same for filter detaching. This also removes one variable sock_setsockopt(). Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/filter.c16
-rw-r--r--net/core/sock.c12
2 files changed, 17 insertions, 11 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index bd903aaf7aa..fd607581ab5 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -433,5 +433,21 @@ int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
return err;
}
+int sk_detach_filter(struct sock *sk)
+{
+ int ret = -ENOENT;
+ struct sk_filter *filter;
+
+ rcu_read_lock_bh();
+ filter = rcu_dereference(sk->sk_filter);
+ if (filter) {
+ rcu_assign_pointer(sk->sk_filter, NULL);
+ sk_filter_release(sk, filter);
+ ret = 0;
+ }
+ rcu_read_unlock_bh();
+ return ret;
+}
+
EXPORT_SYMBOL(sk_chk_filter);
EXPORT_SYMBOL(sk_run_filter);
diff --git a/net/core/sock.c b/net/core/sock.c
index d45ecdccc6a..07101381b8b 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -428,7 +428,6 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
char __user *optval, int optlen)
{
struct sock *sk=sock->sk;
- struct sk_filter *filter;
int val;
int valbool;
struct linger ling;
@@ -652,16 +651,7 @@ set_rcvbuf:
break;
case SO_DETACH_FILTER:
- rcu_read_lock_bh();
- filter = rcu_dereference(sk->sk_filter);
- if (filter) {
- rcu_assign_pointer(sk->sk_filter, NULL);
- sk_filter_release(sk, filter);
- rcu_read_unlock_bh();
- break;
- }
- rcu_read_unlock_bh();
- ret = -ENONET;
+ ret = sk_detach_filter(sk);
break;
case SO_PASSSEC: