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                 if [ $(cat /proc/mtd | wc -l) = 6 ]; then
  13                         mtd erase OpenWrt
  14                         jffs2root --move
  15                 else
  16                         mount -o remount,rw /dev/root /
  17                 fi
  18         else
  19                 is_dirty
  20                 if [ $? = 0 ]; then
  21                         firstboot ramoverlay >&- 2>&-
  22                 else
  23                         mount /dev/mtdblock/4 /jffs
  24                         pivot_root /jffs /jffs/rom
  25                         mount none /proc -t proc
  26                         umount /rom/proc
  27                         mount -o move /rom/dev /dev
  28                 fi
  29         fi
  30 fi
  31
  32 mount none /tmp -t tmpfs -o nosuid,nodev,mode=1777,size=50%
  33 mkdir -p /dev/pts
  34 mount none /dev/pts -t devpts
  35 mount -t sysfs none /sys 2>&-