Re: Undoing chroot?

[Paul Menage]

In article <[e-mail]>,
you write:
>
>So how do you reverse a CHROOT?
>

Assuming your process doesn't drop its root privileges, before you do
the initial chroot() you could do:

old_root = open("/", O_RDONLY);

Then later do

fchdir(oldroot);
chroot(".");

But the cleaner and more portable solution is probably to have a child
process executing inside the chroot, and have its parent eject the CD
when the child exists.

Paul