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net: Make extern and export get_net_ns()

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This function will be used to obtain net of tun device.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kirill Tkhai 2018-02-14 16:39:56 +03:00 committed by David S. Miller
parent bdc8587ad7
commit d8d211a2a0
2 changed files with 4 additions and 1 deletions
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2
include/linux/socket.h
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@ -353,4 +353,6 @@ extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen
unsigned int flags, struct timespec *timeout); unsigned int flags, struct timespec *timeout);
extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
unsigned int vlen, unsigned int flags); unsigned int vlen, unsigned int flags);
extern struct ns_common *get_net_ns(struct ns_common *ns);
#endif /* _LINUX_SOCKET_H */ #endif /* _LINUX_SOCKET_H */

3
net/socket.c
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@ -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. * 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; 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) static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{ {