Re: ioctl CAP_LINUX_IMMUTABLE is checked in the wrong namespace

Theodore Ts'o
2014-04-30T00:32:49Z

On Wed, Apr 30, 2014 at 12:16:41AM +0000, Serge Hallyn wrote:
> I forget the details, but there was another case where I wanted to
> have the userns which 'owns' the whole fs available. I guess we'd
> have to check against that instead of using inode_capable.

Yes, that sounds right.

And *please* tell me that that under no circumstances can anyone other
than root@init_user_ns is allowed to use mknod....

- Ted