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#!/bin/sh
# Copyright (C) 2006 OpenWrt.org
rom=$(awk '/squashfs/ {print $2}' /proc/mounts)
jffs=$(awk '/jffs2/ {print $2}' /proc/mounts)
dupe() { # <new_root> <old_root>
cd $1
echo -n "creating directories... "
{
cd $2
find . -xdev -type d
echo "./dev ./jffs ./mnt ./proc ./tmp ./sys"
# xdev skips mounted directories
cd $1
} | xargs mkdir -p
echo "done"
echo -n "setting up symlinks... "
for file in $(cd $2; find . -xdev -type f;); do
case "$file" in
./rom/note) ;; #nothing
./etc/config*|\
./etc/resolv.conf|\
./usr/lib/ipkg/info) cp -af $2/$file $file;;
*) ln -sf /rom/${file#./*} $file;;
esac
done
for file in $(cd $2; find . -xdev -type l;); do
cp -af $2/${file#./*} $file
done
echo "done"
}
pivot() { # <new_root> <old_root>
mount -o move /proc $1/proc && \
pivot_root $1 $1$2 && {
mount -o move $2/dev /dev
mount -o move $2/tmp /tmp
mount -o move $2/sys /sys
return 0
}
}
mountdp() { # <device> <mount_point> <ignored> <fs>
dev=$1; mnt=$2; shift 2; opt=$*
mount $dev $mnt $opt
dupe $mnt $rom
pivot $mnt /rom
}
ramoverlay() {
mkdir -p /tmp/root
mountdp /tmp/root /mnt -o bind
}
[ "${0##*/}" = "firstboot" ] && {
[ -z "$rom" ] && {
echo "You do not have a squashfs partition; aborting"
echo "(firstboot cannot be run on jffs2 based firmwares)"
exit 1
}
[ "$1" = "switch2jffs" ] && {
mtd erase OpenWrt
mount -o remount,ro none / # try to avoid fs changing while copying
mount -o bind / /mnt
mount /dev/mtdblock/4 /rom/jffs -t jffs2
echo -n "copying files ... "
cp -a /mnt/* /rom/jffs
umount /mnt
echo "done"
pivot /rom /mnt
mount -o move /mnt /tmp/root
pivot /jffs /rom
jffs2root --clean
exit 0
}
# script run manually
[ \! -z "$jffs" ] && {
echo "firstboot has already been run"
echo "jffs2 partition is mounted, only resetting files"
dupe $jffs $rom
exit 0
}
mtd erase OpenWrt
mountdp /dev/mtdblock/4 /jffs -t jffs2
}
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