target/linux/ar7-2.4/base-files/default/bin/firstboot

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3
   4 rom=$(awk '/squashfs/ {print $2}' /proc/mounts)
   5 jffs=$(awk '/jffs2/ {print $2}' /proc/mounts)
   6
   7 dupe() { # <new_root> <old_root>
   8         cd $1
   9         echo -n "creating directories... "
  10         {
  11                 cd $2
  12                 find . -xdev -type d
  13                 echo "./dev ./jffs ./mnt ./proc ./tmp ./sys"
  14                 # xdev skips mounted directories
  15                 cd $1
  16         } | xargs mkdir -p
  17         echo "done"
  18
  19         echo -n "setting up symlinks... "
  20         for file in $(cd $2; find . -xdev -type f;); do
  21                 case "$file" in
  22                 ./rom/note) ;; #nothing
  23                 ./etc/config*|\
  24                 ./etc/resolv.conf|\
  25                 ./usr/lib/ipkg/info) cp -af $2/$file $file;;
  26                 *) ln -sf /rom/${file#./*} $file;;
  27                 esac
  28         done
  29         for file in $(cd $2; find . -xdev -type l;); do
  30                 cp -af $2/${file#./*} $file
  31         done
  32         echo "done"
  33 }
  34
  35 pivot() { # <new_root> <old_root>
  36         mount -o move /proc $1/proc && \
  37         pivot_root $1 $1$2 && {
  38                 mount -o move $2/dev /dev
  39                 mount -o move $2/tmp /tmp
  40                 mount -o move $2/sys /sys
  41                 return 0
  42         }
  43 }
  44
  45 mountdp() { # <device> <mount_point> <ignored> <fs>
  46         dev=$1; mnt=$2; shift 2; opt=$*
  47         mount $dev $mnt $opt
  48         dupe $mnt $rom
  49         pivot $mnt /rom
  50 }
  51
  52 ramoverlay() {
  53         mkdir -p /tmp/root
  54         mountdp /tmp/root /mnt -o bind
  55 }
  56
  57 [ "${0##*/}" = "firstboot" ] && {
  58         [ -z "$rom" ] && {
  59                 echo "You do not have a squashfs partition; aborting"
  60                 echo "(firstboot cannot be run on jffs2 based firmwares)"
  61                 exit 1
  62         }
  63
  64         [ "$1" = "switch2jffs" ] && {
  65                 mtd erase OpenWrt
  66                 mount -o remount,ro none / # try to avoid fs changing while copying
  67                 mount -o bind / /mnt
  68                 mount /dev/mtdblock/4 /rom/jffs -t jffs2
  69                 echo -n "copying files ... "
  70                 cp -a /mnt/* /rom/jffs
  71                 umount /mnt
  72                 echo "done"
  73                 pivot /rom /mnt
  74                 mount -o move /mnt /tmp/root
  75                 pivot /jffs /rom
  76                 exit 0
  77         }
  78
  79         # script run manually
  80         [ \! -z "$jffs" ] && {
  81                 echo "firstboot has already been run"
  82                 echo "jffs2 partition is mounted, only resetting files"
  83                 dupe $jffs $rom
  84                 exit 0
  85         }
  86
  87         mtd erase OpenWrt
  88         mountdp /dev/mtdblock/4 /jffs -t jffs2
  89 }