package/block-extroot/files/extmount.sh

   1 #!/bin/sh
   2 # Copyright 2010 Vertical Communications
   3
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6
   7 determine_root_device() {
   8         root_device="$(mount | grep ' / ' | cut -f1 -d\  | grep -v rootfs )"
   9 }
  10
  11 set_jffs_mp() {
  12         jffs="$(awk '/jffs2/ {print $2}' /proc/mounts)"
  13 }
  14
  15 er_load_modules() {
  16         mkdir -p /tmp/extroot_modules/modules.d
  17         mkdir -p /tmp/extroot_modules/modules
  18         ln -sf /etc/modules.d/* /tmp/overlay/etc/modules.d/* /tmp/extroot_modules/modules.d
  19         ln -sf /lib/modules/*/* /tmp/overlay/lib/modules/*/* /tmp/extroot_modules/modules
  20         local modules="$(grep -l '# May be required for rootfs' /tmp/extroot_modules/modules.d/* 2>/dev/null)"
  21         cd /tmp/extroot_modules/modules && [ -n "$modules" ] && {
  22                 cat $modules | sed -e 's/^\([^#].*\)/insmod \.\/\1.ko/'| sh 2>&- || :
  23         }
  24         rm -rf /tmp/extroot_modules
  25 }
  26
  27 pivot_rom() { # <new_root> <old_root>
  28         mount -o move /proc $1/proc && \
  29         pivot_root $1 $1$2 && {
  30                 mount -o move $2/dev /dev
  31                 mount -o move $2/tmp /tmp
  32                 mount -o move $2/sys /sys 2>&-
  33                 return 0
  34         }
  35 }
  36