openwrt/target/default/target_skeleton/etc/preinit

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