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#!/bin/sh
# Copyright (C) 2006 OpenWrt.org
export PATH=/bin:/sbin:/usr/bin:/usr/sbin
mount none /proc -t proc
mount none /dev -t devfs
# the root mount point can come from the kernel command line
# or it can be overridden in the preinit.arch file
[ -f /etc/preinit.arch ] && . /etc/preinit.arch
# if we have no root parameter, just go to running from ramfs
[ -z $rootfs ] && {
export NOMOUNT="No Root"
exec /sbin/init
}
#if we have a failsafe boot selected, dont bother
#trying to find or wait for a root mount point
[ -z "$FAILSAFE" ] || {
exec /bin/busybox init
}
# Load the modules we have in initramfs, this should
# make the media accessible, but, it may take some time
. /etc/functions.sh
load_modules /etc/modules /etc/modules.d/*
#wait 10 seconds for the disc to show up
#usb stick typically takes 4 to 6 seconds
#till it's readable
#it's quite possible the disc never shows up
#if we netbooted this kernel
COUNTER=0
while [ $COUNTER -lt 10 ]; do
sleep 1
[ -e $rootfs ] && let COUNTER=10;
let COUNTER=COUNTER+1
done
[ -e $rootfs ] || {
export FAILSAFE="NoDisc"
exec /bin/busybox init
}
# now we'll try mount it, again with a timeout
# This will fail if the inserted stick is formatted
# in a manner we dont understand
COUNTER=0
while [ $COUNTER -lt 10 ]; do
sleep 1
mount $rootfs /mnt
[ $? -eq "0" ] && let COUNTER=100;
let COUNTER=COUNTER+1
done
[ $? -ne "0" ] && {
export FAILSAFE="MountFail"
exec /bin/busybox init
}
#It mounted, lets look for a postinit file, again, give it time
#I've seen this take 6 seconds to actually complete
COUNTER=0
while [ $COUNTER -lt 10 ]; do
sleep 1
[ -e /mnt/postinit ] && let COUNTER=10;
let COUNTER=COUNTER+1
done
[ -e /mnt/postinit ] || {
export FAILSAFE="No postinit"
exec /bin/busybox init
}
unset rootfs
mount -o move /proc /mnt/proc
mount -o move /dev /mnt/dev
mount -o move /tmp /mnt/tmp
mount -o move /sys /mnt/sys
exec switch_root -c /dev/console /mnt /postinit
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