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#!/bin/sh
# Copyright (C) 2006 OpenWrt.org
. /etc/functions.sh
. /etc/diag.sh
failsafe() {
lock /tmp/.failsafe
echo "0 1 2 3 4 5u*" > /proc/switch/eth0/vlan/0/ports
set_state failsafe
[ -x "/usr/sbin/nvram" ] && {
[ "$(nvram get boot_wait)" != "on" ] && {
nvram set boot_wait=on
nvram commit
}
}
netmsg 192.168.1.255 "Entering Failsafe!"
telnetd -l /bin/login <> /dev/null 2>&1
ash --login
}
export PATH=/bin:/sbin:/usr/bin:/usr/sbin
mount none /proc -t proc
size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
mount none /tmp -t tmpfs -o size=$size
if grep devfs /proc/filesystems > /dev/null; then
mount none /dev -t devfs
M0=/dev/pty/m0
M1=/dev/pty/m1
else
mount -t sysfs none /sys
mount -t tmpfs tmpfs /dev -o size=512K
mknod /dev/console c 5 1
mkdir /dev/shm
/sbin/hotplug2 --no-persistent --coldplug
M0=/dev/ptmx
M1=/dev/ptmx
fi
mkdir -p /dev/pts
mount none /dev/pts -t devpts
# the shell really doesn't like having stdin/out closed
# that's why we use /dev/pty/m0 and m1 as replacement
# for /dev/console if there's no serial console available
dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null || \
exec <$M0 >$M1 2>&0
insmod diag
set_state preinit
trap 'FAILSAFE=true' USR1
echo '/sbin/hotplug.failsafe' > /proc/sys/kernel/hotplug
ifname=eth0
# hardware specific overrides
case "$(cat /proc/diag/model)" in
"Linksys WAP54G V1") ifname=eth1;;
"ASUS WL-HDD") ifname=eth1;;
"ASUS WL-300g") ifname=eth1;;
"ASUS (unknown, BCM4702)") ifname=eth1;;
esac
insmod switch-core
insmod switch-robo || insmod switch-adm || rmmod switch-core
ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
[ -d /proc/switch/eth0 ] && {
echo 1 > /proc/switch/eth0/reset
# this would be easier if we blasted the message across all ports
# but we don't want packets leaking across interfaces
for port in $(seq 0 4); do {
echo "$port 5u*" > /proc/switch/eth0/vlan/0/ports
netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
}; done
} || netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
sleep 2
eval ${FAILSAFE:+failsafe}
lock -w /tmp/.failsafe
set_state preinit
echo /sbin/hotplug-call > /proc/sys/kernel/hotplug
ifconfig $ifname 0.0.0.0 down
mount_root
exec /sbin/init
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