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