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

[Robert Millan]

El 12 de febrer de 2012 21:19, Steven Chamberlain <steven at pyro.eu.org>
ha escrit:
> 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.

Wouldn't it be better to fix the bug instead?

>> 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".

If someone can confirm this fixes the problem, I could cherry-pick the
execvP() fix from upstream, but that requires importing the whole
execvP() implementation so I'd rather be sure it's what we need.

Could someone please check if 044_mount_exec.diff is the culprit?

-- 
Robert Millan