On Wednesday 14 February 2007 14:57, Andreas Gruenbacher wrote:
> [1] Always make disconnected paths relative:
>
> From all these choices, I actually like [1] best, together with hiding
> unreachable mount points in /proc/$pid/mounts and /proc/$pid/mountstats:
> there is no real point in pretending that unreachable paths are reachable;
> whichever process uses these paths is just as much in error when trying
> from the pwd as when trying from the chroot.

So here is how this could be implemented. See the lengthy explanations in the 
patch headers, too.

d_path-lazy-unmounts.diff

	- Now fails sys_getcwd() with -ENOENT in case the path computed
	  doesn't lead to the chroot.
	- No longer reports empty paths, but report '.' in that case
	  instead.
	- Incorporates Neil's other minor feedback.

no-unreachable-paths.diff

	Hide unreachable mount points in /proc/mounts and /proc/$PID/mountstats.
	In particular, this includes the rootfs mount for all processes that
	are not chroot()ed in that mount.

Andreas