Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=55b333253d5bcafbe187b50474e40789301c53c6
Commit: 55b333253d5bcafbe187b50474e40789301c53c6
Parent: d114f399b4da6fa7f9da3bbf1fb841370c11e788
Author: Pavel Emelyanov <[EMAIL PROTECTED]>
AuthorDate: Wed Oct 17 21:21:26 2007 -0700
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Wed Oct 17 21:21:26 2007 -0700
[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 <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
include/linux/filter.h | 1 +
net/core/filter.c | 16 ++++++++++++++++
net/core/sock.c | 12 +-----------
3 files changed, 18 insertions(+), 11 deletions(-)
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 91b2e3b..ddfa037 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -146,6 +146,7 @@ struct sock;
extern unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter
*filter, int flen);
extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk);
+extern int sk_detach_filter(struct sock *sk);
extern int sk_chk_filter(struct sock_filter *filter, int flen);
#endif /* __KERNEL__ */
diff --git a/net/core/filter.c b/net/core/filter.c
index bd903aa..fd60758 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 d45ecdc..0710138 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:
-
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