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re: kern/45700: /chroot/proc/mounts exposes out-of-chroot pathnames
The following reply was made to PR kern/45700; it has been noted by GNATS.
From: matthew green <mrg%eterna.com.au@localhost>
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
Subject: re: kern/45700: /chroot/proc/mounts exposes out-of-chroot pathnames
Date: Fri, 09 Dec 2011 20:00:18 +1100
> Machine: i386
> If I'm chrooted in /chroot, and I mount procfs on /proc (in the
> chroot), then /proc/mounts exposes pathnames from outside the
> # chroot /chroot
> # mount -t procfs procfs /proc
> # cat /proc/mounts
> Yes, please! It's not clear what the right behaviour is, but
> perhaps a hack similar to ptyfs's would be appropriate here.
df(1) gets this right. hopefully we can use what ever it does
to fix this one...
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