src/initscripts/init.d/udev

   1 #!/bin/sh
   2 ########################################################################
   3 # Begin $rc_base/init.d/udev
   4 #
   5 # Description : Udev cold-plugging script
   6 #
   7 # Authors     : Zack Winkles, Alexander E. Patrakov
   8 #
   9 # Version     : 00.02
  10 #
  11 # Notes       :
  12 #
  13 ########################################################################
  14
  15 . /etc/sysconfig/rc
  16 . ${rc_functions}
  17
  18 case "${1}" in
  19         start)
  20                 boot_mesg "Populating /dev with device nodes..."
  21                 if ! grep -q '[[:space:]]sysfs' /proc/mounts; then
  22                         echo_failure
  23                         boot_mesg -n "FAILURE:\n\nUnable to create" ${FAILURE}
  24                         boot_mesg -n " devices without a SysFS filesystem"
  25                         boot_mesg -n "\n\nAfter you press Enter, this system"
  26                         boot_mesg -n " will be halted and powered off."
  27                         boot_mesg -n "\n\nPress Enter to continue..." ${INFO}
  28                         boot_mesg "" ${NORMAL}
  29                         read ENTER
  30                         /etc/rc.d/init.d/halt stop
  31                 fi
  32                 if ! grep -q '[[:space:]]/dev' /proc/mounts; then
  33                         echo_failure
  34                         boot_mesg -n "FAILURE:\n\nKernel has no devtmpfs/mount" ${FAILURE}
  35                         boot_mesg -n " support but this is needed for udev."
  36                         boot_mesg -n "\n\nAfter you press Enter, this system"
  37                         boot_mesg -n " will be halted and powered off."
  38                         boot_mesg -n "\n\nPress Enter to continue..." ${INFO}
  39                         boot_mesg "" ${NORMAL}
  40                         read ENTER
  41                         /etc/rc.d/init.d/halt stop
  42                 fi
  43
  44                 # Udev handles uevents itself, so we don't need to have
  45                 # the kernel call out to any binary in response to them
  46                 echo > /proc/sys/kernel/hotplug
  47
  48                 # Copy static device nodes to /dev
  49                 cp -a /lib/udev/devices/* /dev
  50
  51                 # Start the udev daemon to continually watch for, and act on,
  52                 # uevents
  53                 /sbin/udevd --daemon
  54
  55                 # Now traverse /sys in order to "coldplug" devices that have
  56                 # already been discovered
  57                 /bin/udevadm trigger
  58
  59                 # Now wait for udevd to process the uevents we triggered
  60                 /bin/udevadm settle
  61                 evaluate_retval
  62
  63                 ;;
  64
  65         *)
  66                 echo "Usage ${0} {start}"
  67                 exit 1
  68                 ;;
  69 esac
  70
  71 # End $rc_base/init.d/udev