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authorAndrey Vagin <avagin@openvz.org>2016-10-24 18:29:13 -0700
committerDavid S. Miller <davem@davemloft.net>2016-10-31 10:56:36 -0400
commitc62cce2caee558e18aa05c01c2fd3b40f07174f2 (patch)
treef652d443eb8394c24772bcee4cf15f3a1a6586f1 /fs/nsfs.c
parent2a43ca0aa9084c41aaa1006fbf22155b2e94babf (diff)
downloadlinux-c62cce2caee558e18aa05c01c2fd3b40f07174f2.tar.bz2
net: add an ioctl to get a socket network namespace
Each socket operates in a network namespace where it has been created, so if we want to dump and restore a socket, we have to know its network namespace. We have a socket_diag to get information about sockets, it doesn't report sockets which are not bound or connected. This patch introduces a new socket ioctl, which is called SIOCGSKNS and used to get a file descriptor for a socket network namespace. A task must have CAP_NET_ADMIN in a target network namespace to use this ioctl. Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrei Vagin <avagin@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/nsfs.c')
-rw-r--r--fs/nsfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nsfs.c b/fs/nsfs.c
index 8718af895eab..8c9fb29c6673 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -118,7 +118,7 @@ again:
return ret;
}
-static int open_related_ns(struct ns_common *ns,
+int open_related_ns(struct ns_common *ns,
struct ns_common *(*get_ns)(struct ns_common *ns))
{
struct path path = {};