package/base-files/files/lib/preinit/20_device_fs_mount

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3 # Copyright (C) 2010 Vertical Communications
   4
   5 do_move_devtmpfs() {
   6     local mnt="$(grep devtmpfs /proc/mounts)"
   7           mnt="${mnt#* }"; mnt="${mnt%% *}"
   8
   9     [ "$mnt" = "/dev" ] || mount -o move "$mnt" /dev
  10 }
  11
  12 do_mount_devfs() {
  13     mount devfs /dev -t devfs
  14 }
  15
  16 do_mount_hotplug() {
  17     mount -t tmpfs tmpfs /dev -o size=512K
  18 }
  19
  20 do_mount_udev() {
  21     mount -n -t tmpfs -o mode=0755 udev /dev
  22 }
  23
  24 choose_device_fs() {
  25     if grep -q devtmpfs /proc/mounts; then
  26         do_move_devtmpfs
  27     elif grep -q devfs /proc/filesystems; then
  28         do_mount_devfs
  29     elif [ -x /sbin/hotplug2 ]; then
  30         do_mount_hotplug
  31     elif [ -x /sbin/udevd ]; then
  32         do_mount_udev
  33     fi
  34 }
  35
  36 boot_hook_add preinit_essential choose_device_fs
  37