package/base-files/default/sbin/mount_root

   1 #!/bin/sh
   2 . /etc/nvram.sh
   3 is_clean() {
   4         grep Broadcom /proc/cpuinfo 2>&- >&- || return 0
   5         OFFSET="$((0x$(dd if=/dev/mtdblock/1 bs=1 skip=$((0x14)) count=2 2>&- | hexdump | grep 0000000 | cut -d ' ' -f 2) - 1))"
   6         dd if=/dev/mtdblock/1 bs=1 skip=$OFFSET count=1 2>&- | hexdump -v | grep ' 0000' > /dev/null && return 255 || return 0
   7 }
   8
   9 if [ "$1" != "failsafe" ]; then
  10         mount | grep jffs2 >&-
  11         if [ $? = 0 ] ; then
  12                 if [ $(cat /proc/mtd | wc -l) = 6 ]; then
  13                         echo 5 > /proc/sys/diag
  14                         mtd unlock linux
  15                         mtd erase OpenWrt
  16                         jffs2root --move
  17                 else
  18                         mtd unlock rootfs
  19                         mount -o remount,rw /dev/root /
  20                 fi
  21         else
  22                 if [ -z "$(nvram get no_root_swap)" ]; then
  23                         is_clean || {
  24                                 mtd erase OpenWrt
  25                                 jffs2root --clean
  26                         }
  27                         mtd unlock OpenWrt
  28                         mount -t jffs2 /dev/mtdblock/4 /jffs
  29                         pivot_root /jffs /jffs/rom
  30                         mount none /proc -t proc
  31                         mount none /dev -t devfs
  32                         umount /rom/proc rom/dev >&-
  33                 fi
  34         fi
  35 fi
  36 mount none /tmp -t tmpfs -o nosuid,nodev,mode=1777,size=50%
  37 mkdir -p /dev/pts
  38 mount none /dev/pts -t devpts