[buildd-tools-devel] Bug#650978: schroot: mount: exec mount_nullfs not found: No such file or directory

[Steven Chamberlain]

On 12/02/12 20:52, Robert Millan wrote:
> I recently applied this patch in mount to support /usr/sbin helpers:
> 
> http://anonscm.debian.org/viewvc/glibc-bsd/trunk/freebsd-utils/debian/patches/044_mount_exec.diff?revision=4047&view=markup
> 
> could you try rebuilding freebsd-utils without it?

Hi,

I tested that /lib/freebsd/mount (for which /bin/mount is wrapper
script) does accept a user-specified PATH when looking for a helper to
execute.  But fortunately it is not setuid (at least on my own Squeeze
installation).

If anyone allows the use of sudo for /bin/mount, that should reset the
environment to something sane, so they should not be at risk.


> If this patch is the problem, we could use execvP() instead (like upstream did).

I see that upstream previously searched /sbin then /usr/sbin, before
rewriting it to use execvP with _PATH_SYSPATH which is
"/rescue:/sbin:/usr/sbin".

Regards,
-- 
Steven Chamberlain
steven at pyro.eu.org