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Commit c336d148 authored by Eric W. Biederman's avatar Eric W. Biederman
Browse files

userns: Implement sk_user_ns 



Add a helper sk_user_ns to make it easy to find the user namespace
of the process that opened a socket.

Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Acked-by: default avatarSerge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
parent 3fbc2905

include/net/sock.h

+9 −0
Original line number Diff line number Diff line
@@ -604,6 +604,15 @@ static inline void sk_add_bind_node(struct sock *sk, 
#define sk_for_each_bound(__sk, node, list) \

	hlist_for_each_entry(__sk, node, list, sk_bind_node)



static inline struct user_namespace *sk_user_ns(struct sock *sk)

{

	/* Careful only use this in a context where these parameters

	 * can not change and must all be valid, such as recvmsg from

	 * userspace.

	 */

	return sk->sk_socket->file->f_cred->user_ns;

}



/* Sock flags */

enum sock_flags {

	SOCK_DEAD,