udev: Add start/stop/status/restart support to init script
[ CQID: WIND00388860 ] Add the ability to use "stop", "start", "restart" and "status" with the udev initscript. (From OE-Core rev: bc6193824ec3eb1f3c590a93ccb79c8588b74412) Signed-off-by: Jesse Zhang <sen.zhang@windriver.com> Signed-off-by: Mark Hatle <mark.hatle@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Jesse Zhang
Richard Purdie
parent
2e913bc62a
commit
a38e4d91cf
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@ -9,6 +9,8 @@
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# Short-Description: Start udevd, populate /dev and load drivers.
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### END INIT INFO
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. /etc/init.d/functions
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export TZ=/etc/localtime
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[ -d /sys/class ] || exit 1
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@ -27,60 +29,73 @@ readfile () {
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fi
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}
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kill_udevd() {
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pid=`pidof -x udevd`
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[ -n "$pid" ] && kill $pid
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}
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case "$1" in
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start)
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export ACTION=add
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# propagate /dev from /sys
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echo "Starting udev"
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export ACTION=add
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# propagate /dev from /sys
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echo "Starting udev"
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# mount the tmpfs on /dev, if not already done
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LANG=C awk '$2 == "/dev" && ($3 == "tmpfs" || $3 == "devtmpfs") { exit 1 }' /proc/mounts && {
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mount -n -o mode=0755 -t tmpfs none "/dev"
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}
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[ -e /dev/pts ] || mkdir -m 0755 /dev/pts
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[ -e /dev/shm ] || mkdir -m 1777 /dev/shm
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mount -a -t tmpfs 2>/dev/null
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mkdir -p /var/volatile/run
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# mount the tmpfs on /dev, if not already done
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LANG=C awk '$2 == "/dev" && ($3 == "tmpfs" || $3 == "devtmpfs") { exit 1 }' /proc/mounts && {
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mount -n -o mode=0755 -t tmpfs none "/dev"
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}
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[ -e /dev/pts ] || mkdir -m 0755 /dev/pts
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[ -e /dev/shm ] || mkdir -m 1777 /dev/shm
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mount -a -t tmpfs 2>/dev/null
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mkdir -p /var/volatile/run
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# cache handling
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if [ "$DEVCACHE" != "" ]; then
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readfile /proc/version
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VERSION="$READDATA"
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readfile /proc/cmdline
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CMDLINE="$READDATA"
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readfile /proc/devices
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DEVICES="$READDATA"
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readfile /proc/atags
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ATAGS="$READDATA"
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# cache handling
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if [ "$DEVCACHE" != "" ]; then
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readfile /proc/version
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VERSION="$READDATA"
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readfile /proc/cmdline
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CMDLINE="$READDATA"
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readfile /proc/devices
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DEVICES="$READDATA"
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readfile /proc/atags
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ATAGS="$READDATA"
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if [ -e $DEVCACHE ]; then
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readfile /etc/udev/cache.data
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if [ "$READDATA" = "$VERSION$CMDLINE$DEVICES$ATAGS" ]; then
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(cd /; tar xf $DEVCACHE > /dev/null 2>&1)
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not_first_boot=1
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fi
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if [ -e $DEVCACHE ]; then
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readfile /etc/udev/cache.data
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if [ "$READDATA" = "$VERSION$CMDLINE$DEVICES$ATAGS" ]; then
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(cd /; tar xf $DEVCACHE > /dev/null 2>&1)
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not_first_boot=1
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fi
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echo "$VERSION$CMDLINE$DEVICES$ATAGS" > /dev/shm/udev.cache
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fi
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fi
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echo "$VERSION$CMDLINE$DEVICES$ATAGS" > /dev/shm/udev.cache
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fi
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fi
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# make_extra_nodes
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killproc udevd > "/dev/null" 2>&1
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# make_extra_nodes
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kill_udevd > "/dev/null" 2>&1
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# trigger the sorted events
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echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug
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/lib/udev/udevd -d
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/usr/bin/udevadm control --env=STARTUP=1
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if [ "$not_first_boot" != "" ];then
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/usr/bin/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
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(/usr/bin/udevadm settle --timeout=3; /usr/bin/udevadm control --env=STARTUP=)&
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else
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/usr/bin/udevadm trigger --action=add
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/usr/bin/udevadm settle
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fi
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# trigger the sorted events
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echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug
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/lib/udev/udevd -d
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/usr/sbin/udevadm control --env=STARTUP=1
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if [ "$not_first_boot" != "" ];then
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/usr/sbin/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
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(/usr/sbin/udevadm settle --timeout=3; /sbin/udevadm control --env=STARTUP=)&
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else
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/usr/sbin/udevadm trigger --action=add
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/usr/sbin/udevadm settle
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fi
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;;
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stop)
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echo "Stopping udevd"
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start-stop-daemon --stop --name udevd --quiet
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;;
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restart)
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$0 stop
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sleep 1
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$0 start
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;;
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status)
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status udevd
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;;
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*)
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echo "Usage: $0 {start|stop|status|restart}"
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exit 1
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esac
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exit 0
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@ -1,6 +1,6 @@
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include udev.inc
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PR = "r4"
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PR = "r5"
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# module-init-tools from kmod_git will provide libkmod runtime
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DEPENDS += "module-init-tools"
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