#!/bin/sh
# Copyright (C) 2006 OpenWrt.org
export PATH=/bin:/sbin:/usr/bin:/usr/sbin
-export HOME=/tmp
+. /etc/diag.sh
+
+failsafe_ip() {
+ ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
+}
+
+failsafe() {
+ [ -n "$ifname" ] && grep "$ifname" /proc/net/dev >/dev/null && {
+ failsafe_ip
+ netmsg 192.168.1.255 "Entering Failsafe!"
+ telnetd -l /bin/login <> /dev/null 2>&1
+ }
+ lock /tmp/.failsafe
+ ash --login
+}
+
+mount proc /proc -t proc
+mount sysfs /sys -t sysfs
+
+size=$(awk '/MemTotal:/ {l=5242880;mt=($2*1024);print((s=mt/2)<l)?mt-l:s}' /proc/meminfo)
+mount tmpfs /tmp -t tmpfs -o size=$size,nosuid,nodev,mode=1777
+
+if grep devfs /proc/filesystems > /dev/null; then
+ mount devfs /dev -t devfs
+ M0=/dev/pty/m0
+ M1=/dev/pty/m1
+ HOTPLUG=/sbin/hotplug-call
+
+elif [ -x /sbin/hotplug2 ]; then
+ mount -t tmpfs tmpfs /dev -o size=512K
+ mknod /dev/console c 5 1
+ if [ -n "$INITRAMFS" ]; then
+ /sbin/hotplug2 --coldplug --no-persistent --max_children 1 &
+ else
+ /sbin/hotplug2 --coldplug --set-rules-file /etc/hotplug2-init.rules
+ /sbin/hotplug2 --no-coldplug --persistent --set-rules-file /etc/hotplug2-init.rules &
+ fi
+ M0=/dev/ptmx
+ M1=/dev/ptmx
+ HOTPLUG=
+
+elif [ -x /sbin/udevd ]; then
+ mount -n -t tmpfs -o mode=0755 udev /dev
+ /sbin/udevd --daemon
+ /sbin/udevtrigger
+ /sbin/udevsettle
+ M0=/dev/pty/ptmx
+ M1=/dev/pty/ptmx
+ HOTPLUG=
+fi
+
+mkdir -p /dev/pts /dev/shm
+mount devpts /dev/pts -t devpts
+
+# the shell really doesn't like having stdin/out closed
+# that's why we use /dev/pty/m0 and m1 as replacement
+# for /dev/console if there's no serial console available
+dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && {
+ M0=/dev/console
+ M1=/dev/console
+}
+
+exec <$M0 >$M1 2>&0
+
+echo "- preinit -"
+trap 'FAILSAFE=true' USR1
[ -e /etc/preinit.arch ] && . /etc/preinit.arch
-mount_root ${FAILSAFE:+failsafe}
-exec /sbin/init
+set_state preinit
+echo "$HOTPLUG" > /proc/sys/kernel/hotplug
+eval ${FAILSAFE:+failsafe}
+lock -w /tmp/.failsafe
+
+if [ -z "$INITRAMFS" ]; then
+ mount_root
+ [ -f /sysupgrade.tgz ] && {
+ echo "- config restore -"
+ cd /
+ mv sysupgrade.tgz /tmp
+ tar xzf /tmp/sysupgrade.tgz
+ rm -f /tmp/sysupgrade.tgz
+ sync
+ }
+
+ echo "- init -"
+
+ killall hotplug2
+ exec /sbin/init
+fi