meta-tizen-common-base/recipes-core/systemd/systemd/init

   1 #!/bin/sh
   2
   3 ### BEGIN INIT INFO
   4 # Provides:          udev
   5 # Required-Start:    mountvirtfs
   6 # Required-Stop:
   7 # Default-Start:     S
   8 # Default-Stop:
   9 # Short-Description: Start udevd, populate /dev and load drivers.
  10 ### END INIT INFO
  11
  12 . /etc/init.d/functions
  13
  14 export TZ=/etc/localtime
  15
  16 [ -d /sys/class ] || exit 1
  17 [ -r /proc/mounts ] || exit 1
  18 [ -x @UDEVD@ ] || exit 1
  19 [ -f /etc/default/udev-cache ] && . /etc/default/udev-cache
  20 [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
  21
  22 readfile () {
  23    filename=$1
  24    READDATA=""
  25    if [ -r $filename ]; then
  26        while read line; do
  27            READDATA="$READDATA$line"
  28        done < $filename
  29    fi
  30 }
  31
  32 case "$1" in
  33   start)
  34     export ACTION=add
  35     # propagate /dev from /sys
  36     echo "Starting udev"
  37
  38     # mount the devtmpfs on /dev, if not already done
  39     LANG=C awk '$2 == "/dev" && ($3 == "devtmpfs") { exit 1 }' /proc/mounts && {
  40             mount -n -o mode=0755 -t devtmpfs none "/dev"
  41     }
  42     [ -e /dev/pts ] || mkdir -m 0755 /dev/pts
  43     [ -e /dev/shm ] || mkdir -m 1777 /dev/shm
  44     mount -a -t tmpfs 2>/dev/null
  45
  46     # cache handling
  47     if [ "$DEVCACHE" != "" ]; then
  48             readfile /proc/version
  49             VERSION="$READDATA"
  50             readfile /proc/cmdline
  51             CMDLINE="$READDATA"
  52             readfile /proc/devices
  53             DEVICES="$READDATA"
  54             readfile /proc/atags
  55             ATAGS="$READDATA"
  56
  57             if [ -e $DEVCACHE ]; then
  58                     readfile /etc/udev/cache.data
  59                     if [ "$READDATA" = "$VERSION$CMDLINE$DEVICES$ATAGS" ]; then
  60                             (cd /; tar xf $DEVCACHE > /dev/null 2>&1)
  61                             not_first_boot=1
  62                             [ "$VERBOSE" != "no" ] && echo "udev: using cache file $DEVCACHE"
  63                             [ -e /dev/shm/udev.cache ] && rm -f /dev/shm/udev.cache
  64                     else
  65                             echo "$VERSION$CMDLINE$DEVICES$ATAGS" > /dev/shm/udev.cache
  66                     fi
  67             else
  68                     echo "$VERSION$CMDLINE$DEVICES$ATAGS" > /dev/shm/udev.cache
  69             fi
  70     fi
  71
  72     # make_extra_nodes
  73     killproc systemd-udevd > "/dev/null" 2>&1
  74
  75     # trigger the sorted events
  76     echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug
  77     @UDEVD@ -d
  78
  79     udevadm control --env=STARTUP=1
  80     if [ "$not_first_boot" != "" ];then
  81             udevadm trigger --action=add --subsystem-nomatch=tty --subsystem-nomatch=mem --subsystem-nomatch=vc --subsystem-nomatch=vtconsole --subsystem-nomatch=misc --subsystem-nomatch=dcon --subsystem-nomatch=pci_bus  --subsystem-nomatch=graphics        --subsystem-nomatch=backlight --subsystem-nomatch=video4linux  --subsystem-nomatch=platform
  82             (udevadm settle --timeout=3; udevadm control --env=STARTUP=)&
  83     else
  84             udevadm trigger --action=add
  85             udevadm settle
  86     fi
  87     ;;
  88   stop)
  89     echo "Stopping udevd"
  90     start-stop-daemon --stop --name systemd-udevd --quiet
  91     ;;
  92   restart)
  93     $0 stop
  94     sleep 1
  95     $0 start
  96     ;;
  97   status)
  98     status systemd-udevd
  99     ;;
 100   *)
 101     echo "Usage: $0 {start|stop|status|restart}"
 102     exit 1
 103 esac
 104 exit 0