From: Andrei Vagin <ava...@openvz.org> Date: Wed, 1 Feb 2017 11:00:45 -0800
> This ioctl opens a file to which a socket is bound and > returns a file descriptor. The caller has to have CAP_NET_ADMIN > in the socket network namespace. > > Currently it is impossible to get a path and a mount point > for a socket file. socket_diag reports address, device ID and inode > number for unix sockets. An address can contain a relative path or > a file may be moved somewhere. And these properties say nothing about > a mount namespace and a mount point of a socket file. > > With the introduced ioctl, we can get a path by reading > /proc/self/fd/X and get mnt_id from /proc/self/fdinfo/X. > > In CRIU we are going to use this ioctl to dump and restore unix socket. > > Here is an example how it can be used: ... > Signed-off-by: Andrei Vagin <ava...@openvz.org> This looks fine to me, applied, thanks.
