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authorDenis V. Lunev <den@openvz.org>2008-02-29 11:18:32 -0800
committerDavid S. Miller <davem@davemloft.net>2008-02-29 11:18:32 -0800
commitedf0208702007ec1f6a36756fdd005f771a4cf17 (patch)
treef323141ddde44db532d984ea7bf769a05220aa0c /net/core/sock.c
parent9dfbec1fb2bedff6b118504055cd9f0485edba45 (diff)
downloadlinux-2.6.38-lt-ux500-edf0208702007ec1f6a36756fdd005f771a4cf17.tar.gz
[NET]: Make netlink_kernel_release publically available as sk_release_kernel.
This staff will be needed for non-netlink kernel sockets, which should also not pin a namespace like tcp_socket and icmp_socket. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/sock.c')
-rw-r--r--net/core/sock.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 09cb3a74de7..c71b645a78f 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -987,6 +987,24 @@ void sk_free(struct sock *sk)
sk_prot_free(sk->sk_prot_creator, sk);
}
+/*
+ * Last sock_put should drop referrence to sk->sk_net. It has already
+ * been dropped in sk_change_net. Taking referrence to stopping namespace
+ * is not an option.
+ * Take referrence to a socket to remove it from hash _alive_ and after that
+ * destroy it in the context of init_net.
+ */
+void sk_release_kernel(struct sock *sk)
+{
+ if (sk == NULL || sk->sk_socket == NULL)
+ return;
+
+ sock_hold(sk);
+ sock_release(sk->sk_socket);
+ sk->sk_net = get_net(&init_net);
+ sock_put(sk);
+}
+
struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
{
struct sock *newsk;