xref: /src/distrib/vax/cdroms/installcd/etc.rc

# $NetBSD: etc.rc,v 1.4 2020/02/26 16:00:48 riastradh Exp $
#
# Copyright (c) 1997 Perry E. Metzger
# Copyright (c) 1994 Christopher G. Demetriou
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#          This product includes software developed for the
#          NetBSD Project.  See http://www.NetBSD.org/ for
#          information about NetBSD.
# 4. The name of the author may not be used to endorse or promote products
#    derived from this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# 
# <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>

PATH=/sbin:/bin:/usr/bin:/usr/sbin:/
export PATH

lowmemfail()
{
	cat << "EOM"
This machine seems to not have enough memory for this install method.
Please refer to the installation documentation on how to create and
boot a custom kernel and how to install with that.

Please use the 'halt' command to stop the machine.
EOM
	exec sh
}

# if /dev has not been populated by init, it may be a stock "MAKEDEV all"
# variant without "opty" - in which case we need to mount a ptyfs
if [ ! -r /dev/ttypf ]; then
	if mount | grep '^ptyfs on /dev/pts' >/dev/null 2>&1; then
		# do not mount it again
	else
		mount -t ptyfs ptyfs /dev/pts
	fi
fi

# mount a few tempfs to allow modifications over the CD contents
mount -t tmpfs tmpfs /tmp || lowmemfail
mount -t tmpfs tmpfs /var || lowmemfail
mount -t tmpfs -o union tmpfs /etc || lowmemfail

# prepare important directories in the tmpfses, so dhcpcd and vi will work
mkdir -p /var/run /var/db /var/tmp

# create a gettytab to autologin and run sysinst (etc/gettytab is a symlink
# to /tmp/gettytab)
echo "# Autostart sysinst" > /tmp/gettytab
echo -n "sysinst:al=root:lo=/install.sh:im=:sp#" >> /tmp/gettytab
stty speed >> /tmp/gettytab

# done, move on to multiuser mode
exit 0