[PATCH 1/2] fs/exec: Explicitly unshare fs_struct on exec

[David Laight]

From: Andy Lutomirski
> Sent: 14 October 2022 04:18
...
> But seriously, this makes no sense at all.  It should not be possible to exec a program and then,
> without ptrace, change its cwd out from under it.  Do we really need to preserve this behavior?

it maybe ok if the exec'ed program also 'bought-in' to the
fact that its cwd and open files might get changed.
But imagine someone doing it to a login shell!

	David

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