target/linux/brcm-2.4/base-files/default/sbin/mount_root

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3 . /etc/functions.sh
   4
   5 is_dirty() {
   6         mtdpart="$(find_mtd_part linux)"
   7         grep Broadcom /proc/cpuinfo >&- || return 1
   8         OFFSET="$(($(hexdump -v $mtdpart -s 20 -n 2 -e '"%d"')-1))"
   9         return $(hexdump -v $mtdpart -s $OFFSET -n 1 -e '"%d"')
  10 }
  11
  12 if grep devfs /proc/filesystems > /dev/null; then
  13         mount none /dev -t devfs
  14 else
  15         mount -t sysfs none /sys
  16         mount -t tmpfs tmpfs /dev -o size=512K
  17         mknod /dev/console c 5 1
  18         mkdir /dev/shm
  19         /sbin/mdev -s
  20 fi
  21 mkdir -p /dev/pts
  22 mount none /dev/pts -t devpts
  23
  24 if [ "$1" != "failsafe" ]; then
  25         mtd unlock linux
  26         mount | grep jffs2 >&-
  27         if [ $? = 0 ] ; then
  28                 mount -o remount,rw /dev/root /
  29         else
  30                 . /bin/firstboot
  31                 is_dirty
  32                 [ $? != 0 ] && {
  33                         echo "switching to jffs2"
  34                         mount $(find_mtd_part OpenWrt) /jffs -t jffs2
  35                         fopivot /jffs /rom
  36                 } || {
  37                         echo "jffs2 not ready yet; using ramdisk"
  38                         ramoverlay
  39                 }
  40         fi
  41 fi
  42
  43 grep sysfs /proc/filesystems >/dev/null && mount -t sysfs none /sys 2>&-