-#!/bin/sh -e
-### BEGIN INIT INFO
-# Provides: udev
-# Required-Start: mountvirtfs
-# Required-Stop:
-# Default-Start: S
-# Default-Stop:
-# Short-Description: Start udevd, populate /dev and load drivers.
-### END INIT INFO
-
-# we need to unmount /dev/pts/ and remount it later over the tmpfs
-unmount_devpts() {
- if mountpoint -q /dev/pts/; then
- umount -l /dev/pts/
- fi
-
- if mountpoint -q /dev/shm/; then
- umount -l /dev/shm/
- fi
+export TZ=/etc/localtime
+
+[ -d /sys/class ] || exit 1
+[ -r /proc/mounts ] || exit 1
+[ -x /sbin/udevd ] || exit 1
+[ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
+
+kill_udevd() {
+ if [ -x /sbin/pidof ]; then
+ pid=`/sbin/pidof -x udevd`
+ [ -n "$pid" ] && kill $pid
+ fi
}
-# mount a tmpfs over /dev, if somebody did not already do it
-mount_tmpfs() {
- if grep -E -q "^[^[:space:]]+ /dev tmpfs" /proc/mounts; then
- return
- fi
-
- # /dev/.static/dev/ is used by MAKEDEV to access the real /dev/ directory.
- # /etc/udev/ is recycled as a temporary mount point because it's the only
- # directory which is guaranteed to be available.
- mount -n -o bind /dev /etc/udev
-
- if ! mount -n -o size=$tmpfs_size,mode=0755 -t tmpfs tmpfs /dev; then
- umount /etc/udev
- echo "udev requires tmpfs support, not started."
- exit 1
- fi
-
- mkdir -p /dev/.static/dev
- chmod 700 /dev/.static/
- # The mount options in busybox are non-standard...
- if test -x /bin/mount.util-linux
- then
- /bin/mount.util-linux --move /etc/udev /dev/.static/dev
- elif test -x /bin/busybox
- then
- busybox mount -n -o move /etc/udev /dev/.static/dev
- else
- echo "udev requires an identifiable mount command, not started."
- umount /etc/udev
- umount /dev
- exit 1
- fi
-}
-
-# I hate this hack. -- Md
-make_extra_nodes() {
- if [ "$(echo /lib/udev/devices/*)" != "/lib/udev/devices/*" ]; then
- cp -a /lib/udev/devices/* /dev/
- fi
-
- [ -e /etc/udev/links.conf ] || return 0
- grep '^[^#]' /etc/udev/links.conf | \
- while read type name arg1; do
- [ "$type" -a "$name" -a ! -e "/dev/$name" -a ! -L "/dev/$name" ] ||continue
- case "$type" in
- L) ln -s $arg1 /dev/$name ;;
- D) mkdir -p /dev/$name ;;
- M) mknod -m 600 /dev/$name $arg1 ;;
- *) echo "links.conf: unparseable line ($type $name $arg1)" ;;
- esac
- done
-}
-
-supported_kernel() {
- case "$(uname -r)" in
- 2.[012345].*|2.6.[0-9]|2.6.[0-9][!0-9]*) return 1 ;;
- 2.6.1[01]|2.6.1[01][!0-9]*) return 1 ;;
- esac
- return 0
-}
+export ACTION=add
+# propagate /dev from /sys
+echo -n "Starting udev"
-set_hotplug_handler() {
- case "$(uname -r)" in
- 2.6.1[0-4]|2.6.1[0-4][!0-9]*) HANDLER='/sbin/udevsend' ;;
- esac
- echo $HANDLER > /proc/sys/kernel/hotplug
+# mount the tmpfs on /dev, if not already done
+LANG=C awk "\$2 == \"/dev\" && \$4 == \"tmpfs\" { exit 1 }" /proc/mounts && {
+ mount -n -o mode=0755 -t tmpfs none "/dev"
+ mkdir -m 0755 /dev/pts
+ mkdir -m 0755 /dev/shm
}
-# shell version of /usr/bin/tty
-my_tty() {
- [ -x /bin/readlink ] || return 0
- [ -e /proc/self/fd/0 ] || return 0
- readlink --silent /proc/self/fd/0 || true
-}
-
-warn_if_interactive() {
- if [ "$RUNLEVEL" = "S" -a "$PREVLEVEL" = "N" ]; then
- return
- fi
-
- TTY=$(my_tty)
- if [ -z "$TTY" -o "$TTY" = "/dev/console" ]; then
- return
- fi
-
- printf "\n\n\nIt has been detected that the command\n\n\t$0 $*\n\n"
- printf "has been run from an interactive shell.\n"
- printf "It will probably not do what you expect, so this script will wait\n"
- printf "60 seconds before continuing. Press ^C to stop it.\n"
- printf "RUNNING THIS COMMAND IS HIGHLY DISCOURAGED!\n\n\n\n"
- sleep 60
-}
-
-##############################################################################
-
-PATH="/sbin:/bin:/usr/bin"
-
-[ -x /sbin/udevd ] || exit 0
-
-# defaults
-tmpfs_size="10M"
-udev_root="/dev"
-udevd_timeout=30
-
-. /etc/udev/udev.conf
-
-if ! supported_kernel; then
- echo "udev requires a kernel >= 2.6.12, not started."
- exit 1
-fi
-
-if [ ! -e /proc/filesystems ]; then
- echo "udev requires a mounted procfs, not started."
- exit 1
-fi
-
-if ! grep -q '[[:space:]]tmpfs$' /proc/filesystems; then
- echo "udev requires tmpfs support, not started."
- exit 1
+if [ -e /etc/dev.tar ]; then
+ (cd /; tar xf /etc/dev.tar)
+ not_first_boot=1
fi
-if [ ! -d /sys/class/ ]; then
- echo "udev requires a mounted sysfs, not started."
- exit 1
-fi
-
-if [ ! -e /proc/sys/kernel/hotplug ]; then
- echo "udev requires hotplug support, not started."
- exit 1
-fi
-
-##############################################################################
-
-# When modifying this script, do not forget that between the time that
-# the new /dev has been mounted and udevsynthesize has been run there will be
-# no /dev/null. This also means that you cannot use the "&" shell command.
+# make_extra_nodes
+kill_udevd > "/dev/null" 2>&1
-case "$1" in
- start)
- if [ -e "$udev_root/.udev/" ]; then
- if mountpoint -q /dev/; then
- TMPFS_MOUNTED=1
- else
- echo ".udev/ already exists on the static $udev_root!"
- fi
- else
- warn_if_interactive
- fi
+ # trigger the sorted events
+ echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug
+ /sbin/udevd -d
- echo "Starting the hotplug events dispatcher" "udevd"
- udevd --daemon
-
- set_hotplug_handler
-
- if [ -z "$TMPFS_MOUNTED" ]; then
- unmount_devpts
- mount_tmpfs
- [ -d /proc/1 ] || mount -n /proc
- fi
-
- # if this directory is not present /dev will not be updated by udev
- mkdir -p /dev/.udev/ /dev/.udev/db/ /dev/.udev/queue/ /dev/.udevdb/
- # /dev/null must be created before udevd is started
- make_extra_nodes
-
- echo "Synthesizing the initial hotplug events"
- udevtrigger
-
- # wait for the udevd childs to finish
- echo "Waiting for /dev to be fully populated"
- while [ -d /dev/.udev/queue/ ]; do
- sleep 1
- udevd_timeout=$(($udevd_timeout - 1))
- if [ $udevd_timeout -eq 0 ]; then
- # ps axf
- break
- fi
- done
- if [ $udevd_timeout -eq 0 ]; then
- echo 'timeout'
- fi
- ;;
-
- stop)
- echo "Stopping the hotplug events dispatcher" "udevd"
- start-stop-daemon --stop --name udevd --quiet
- ;;
-
- restart|force-reload)
- echo "Stopping the hotplug events dispatcher" "udevd"
- if start-stop-daemon --stop --name udevd --quiet ; then
- exit 1
- fi
-
- echo "Starting the hotplug events dispatcher" "udevd"
- udevd --daemon
- ;;
-
- *)
- echo "Usage: /etc/init.d/udev {start|stop|restart|force-reload}"
- exit 1
- ;;
-esac
+ /sbin/udevcontrol env STARTUP=1
+ if [ "$not_first_boot" != "" ];then
+ /sbin/udevtrigger --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
+ (/sbin/udevsettle --timeout=3; /sbin/udevcontrol env STARTUP=)&
+ else
+ /sbin/udevtrigger
+ /sbin/udevsettle
+ (cd /; tar cf /etc/dev.tar /dev)
+ fi
+echo
exit 0
-
