target/linux/brcm-2.4/base-files/default/sbin/mount_root

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3 . /etc/functions.sh
   4
   5 is_dirty() {
   6         mtdpart="$(find_mtd_part linux)"
   7         grep Broadcom /proc/cpuinfo >&- || return 1
   8         OFFSET="$(($(hexdump -v $mtdpart -s 20 -n 2 -e '"%d"')-1))"
   9         return $(hexdump -v $mtdpart -s $OFFSET -n 1 -e '"%d"')
  10 }
  11
  12 if [ "$1" != "failsafe" ]; then
  13         mtd unlock linux
  14         mount | grep jffs2 >&-
  15         if [ $? = 0 ] ; then
  16                 mount -o remount,rw /dev/root /
  17         else
  18                 . /bin/firstboot
  19                 is_dirty
  20                 [ $? != 0 ] && {
  21                         echo "switching to jffs2"
  22                         mount $(find_mtd_part OpenWrt) /jffs -t jffs2
  23                         fopivot /jffs /rom
  24                 } || {
  25                         echo "jffs2 not ready yet; using ramdisk"
  26                         ramoverlay
  27                 }
  28         fi
  29 fi