openwrt/target/default/target_skeleton/etc/preinit

   1 #!/bin/sh
   2 mount none /proc -t proc
   3 mount none /tmp -t ramfs
   4 insmod diag
   5 echo 0x01 > /proc/sys/diag
   6 sleep 1
   7 if [ $(cat /proc/sys/reset) = 1 ] ; then
   8   export FAILSAFE=true
   9   while :; do { echo $(((X=(X+1)%8)%2)) > /proc/sys/diag; sleep $((X==0)); } done &
  10 else
  11   mount | grep jffs2 >&-
  12   if [ $? = 0 ] && [ $(cat /proc/mtd | wc -l) = 6 ] ; then
  13     jffs2root --move && reboot
  14   else
  15     mtd unlock mtd4
  16     mount -t jffs2 /dev/mtdblock/4 /jffs
  17     pivot_root /jffs /jffs/rom
  18     mount none /dev -t devfs
  19     mount none /proc -t proc
  20     umount rom/proc
  21   fi
  22 fi
  23 exec /sbin/init