RE: [PATCH RFC 0/1] mount: universally disallow mounting over symlinks

David Laight
2020-01-02T08:58:15Z

From: Aleksa Sarai
> Sent: 30 December 2019 08:32
...
> I'm not sure I agree -- as I mentioned in my other mail, re-opening
> through /proc/self/fd/$n works *very* well and has for a long time (in
> fact, both LXC and runc depend on this working).

I thought it was marginally broken because it is followed as a symlink?
On, for example, NetBSD /proc/<n>/fd/<n> is a real reference to the
filesystem inode and can be used to link the file back into the filesystem
if all the directory entries have been removed.

David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)