Date: Mon, 10 May 2004 18:42:17 +0400 (MSD) From: Dmitry Morozovsky <marck@rinet.ru> To: Tim Robbins <tjr@freebsd.org> Cc: Volker Stolz <vs@freebsd.org> Subject: Re: nullfs-autopsy after crash Message-ID: <20040510183607.V60519@woozle.rinet.ru> In-Reply-To: <20040510092015.GA29281@cat.robbins.dropbear.id.au> References: <20040510070010.GA587@i2.informatik.rwth-aachen.de> <20040510092015.GA29281@cat.robbins.dropbear.id.au>
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On Mon, 10 May 2004, Tim Robbins wrote:
TR> > /bin on /usr/tmp/jail/bin (null, local, read-only)
TR> > /sbin on /usr/tmp/jail/sbin (null, local, read-only)
TR> > /etc on /usr/tmp/jail/etc (null, local, read-only)
TR> > /dev on /usr/tmp/jail/dev (null, local, read-only)
TR> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TR>
TR> Accessing special (non-directory, non-regular) files through nullfs
TR> is known to cause panics. You'll need to create a dev directory
TR> for each jail and populate it with makedev.
... and it seems appropriate for me to do this via mfs like
JDIR=/ar/J/j224
mount_mfs -s 256 -i 768 -o nosuid swap ${JDIR}/dev > /dev/null 2>&1
# XXX mfs use 1777 mode so clean this up
chmod 755 ${JDIR}/dev
rm -rf ${JDIR}/dev/ >/dev/null 2>&1
cd ${JDIR}/dev
sh /dev/MAKEDEV std pty0
rm mem kmem pci io klog console
ln -sf null mem
ln -sf null kmem
ln -sf null console
Sincerely,
D.Marck [DM5020, MCK-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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