On Thu, Jul 14, 2011 at 01:21:54PM +0200, Adam Borowski wrote: > On Thu, Jul 14, 2011 at 12:15:40PM +0100, Roger Leigh wrote: > > On Thu, Jul 14, 2011 at 01:01:20PM +0200, Adam Borowski wrote: > > > On Thu, Jul 14, 2011 at 11:57:29AM +0100, Roger Leigh wrote: > > > > What is the return value of ischroot in the vserver (when run as > > > > root)? > > > > > > 2 (failure to detect) > > > > Does /proc (/proc/1/root) exist inside the vserver? Is /proc > > available during normal vserver operation? > > It exists, but is unreadable, even to root: > > [~]# ls -al /proc/1/root > ls: cannot read symbolic link /proc/1/root: Permission denied > lrwxrwxrwx 1 root root 0 Jul 14 10:57 /proc/1/root
Is /proc/self/vinfo readable? We were using the following logic
prior to the use of ischroot. Does it work correctly for you?
if [ -e /proc/self/vinfo ]; then
# If XID: 0 is found, we're a vserver
# host, *not* a guest, hence return
# false
if grep '^XID:[[:space:]]*0$' /proc/self/vinfo 2>&1 >/dev/null; then
return 1
fi
fi
If it does, we'll need to put this logic into ischroot I think.
Thanks,
Roger
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