net: Make extern and export get_net_ns()

Kirill Tkhai · davem330 · commit d8d211a2a0c3 · 2018-02-15T15:34:42.000-05:00
This function will be used to obtain net of tun device.

Signed-off-by: Kirill Tkhai &lt;ktkhai@virtuozzo.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/include/linux/socket.h b/include/linux/socket.h
@@ -353,4 +353,6 @@ extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen
 			  unsigned int flags, struct timespec *timeout);
 extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
 			  unsigned int vlen, unsigned int flags);
+
+extern struct ns_common *get_net_ns(struct ns_common *ns);
 #endif /* _LINUX_SOCKET_H */
diff --git a/net/socket.c b/net/socket.c
@@ -990,10 +990,11 @@ static long sock_do_ioctl(struct net *net, struct socket *sock,
  *	what to do with it - that's up to the protocol still.
  */
 
-static struct ns_common *get_net_ns(struct ns_common *ns)
+struct ns_common *get_net_ns(struct ns_common *ns)
 {
 	return &get_net(container_of(ns, struct net, ns))->ns;
 }
+EXPORT_SYMBOL_GPL(get_net_ns);
 
 static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 {

Original file line number	Diff line number	Diff line change
`@@ -990,10 +990,11 @@ static long sock_do_ioctl(struct net net, struct socket sock,`
`990`	`990`	`* what to do with it - that's up to the protocol still.`
`991`	`991`	`*/`
`992`	`992`
`993`		`-static struct ns_common get_net_ns(struct ns_common ns)`
	`993`	`+struct ns_common get_net_ns(struct ns_common ns)`
`994`	`994`	`{`
`995`	`995`	`return &get_net(container_of(ns, struct net, ns))->ns;`
`996`	`996`	`}`
	`997`	`+EXPORT_SYMBOL_GPL(get_net_ns);`
`997`	`998`
`998`	`999`	`static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)`
`999`	`1000`	`{`