openwrt/package/base-files/default/sbin/mount_root

   1 #!/bin/sh
   2 is_dirty() {
   3         grep Broadcom /proc/cpuinfo >&- || return 1
   4         OFFSET="$(($(hexdump -v /dev/mtdblock/1 -s 20 -n 2 -e '"%d"')-1))"
   5         return $(hexdump -v /dev/mtdblock/1 -s $OFFSET -n 1 -e '"%d"')
   6 }
   7
   8 if [ "$1" != "failsafe" -a "$(nvram get no_root_swap)" != 1 ]; then
   9         mtd unlock linux
  10         mount | grep jffs2 >&-
  11         if [ $? = 0 ] ; then
  12                 grep "mini_fo" /proc/filesystems >&- ||
  13                 mount -o remount,rw /dev/root /
  14         else
  15                 . /bin/firstboot
  16                 is_dirty
  17                 [ $? != 0 ] && {
  18                         echo "switching to jffs2"
  19                         mount /dev/mtdblock/4 /jffs -t jffs2
  20                         fopivot /jffs /rom
  21                 } || {
  22                         echo "jffs2 not ready yet; using ramdisk"
  23                         ramoverlay
  24                 }
  25         fi
  26 fi
  27
  28 mount none /tmp -t tmpfs -o remount,nosuid,nodev,mode=1777
  29 mkdir -p /dev/pts
  30 mount none /dev/pts -t devpts 2>&-
  31 mount -t sysfs none /sys 2>&-