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buildroot/buildroot-2016.08.1/package/eudev/S10udev 1.59 KB
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  #!/bin/sh
  #
  # udev	This is a minimal non-LSB version of a UDEV startup script.  It
  #	was derived by stripping down the udev-058 LSB version for use
  #	with buildroot on embedded hardware using Linux 2.6.34+ kernels.
  #
  #	You may need to customize this for your system's resource limits
  #	(including startup time!) and administration.  For example, if
  #	your early userspace has a custom initramfs or initrd you might
  #	need /dev much earlier; or without hotpluggable busses (like USB,
  #	PCMCIA, MMC/SD, and so on) your /dev might be static after boot.
  #
  #	This script assumes your system boots right into the eventual root
  #	filesystem, and that init runs this udev script before any programs
  #	needing more device nodes than the bare-bones set -- /dev/console,
  #	/dev/zero, /dev/null -- that's needed to boot and run this script.
  #
  
  # Check for missing binaries
  UDEV_BIN=/sbin/udevd
  test -x $UDEV_BIN || exit 5
  
  # Check for config file and read it
  UDEV_CONFIG=/etc/udev/udev.conf
  test -r $UDEV_CONFIG || exit 6
  . $UDEV_CONFIG
  
  case "$1" in
      start)
          printf "Populating ${udev_root:-/dev} using udev: "
          printf '\000\000\000\000' > /proc/sys/kernel/hotplug
          $UDEV_BIN -d || (echo "FAIL" && exit 1)
          udevadm trigger --type=subsystems --action=add
          udevadm trigger --type=devices --action=add
          udevadm settle --timeout=30 || echo "udevadm settle failed"
          echo "done"
          ;;
      stop)
          # Stop execution of events
          udevadm control --stop-exec-queue
          killall udevd
          ;;
      *)
          echo "Usage: $0 {start|stop}"
          exit 1
          ;;
  esac
  
  
  exit 0