5 # script to initialize /dev by using udev.
7 # Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
9 # Released under the GPL v2 only.
11 # This needs to be run at the earliest possible point in the boot
14 # Based on the udev init.d script
16 # Thanks go out to the Gentoo developers for proving
17 # that this is possible to do.
19 # Yes, it's very verbose, feel free to turn off all of the echo calls,
20 # they were there to make me feel better that everything was working
21 # properly during development...
23 # default value, if no config present.
28 # don't use udev if sysfs is not mounted.
29 [ -d $sysfs_dir/class ] || exit 1
30 [ -r /proc/mounts ] || exit 1
31 [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
33 . /etc/rc.d/init.d/functions
40 grep '^[^#]' /etc/udev/links.conf | \
41 while read type name arg1; do
42 [ "$type" -a "$name" -a ! -e "$udev_root/$name" -a ! -L "/dev/$name" ] ||continue
44 L) ln -s $arg1 $udev_root/$name ;;
45 D) mkdir -p $udev_root/$name ;;
46 M) mknod -m 600 /dev/$name $arg1 ;;
47 *) echo "links.conf: unparseable line ($type $name $arg1)" ;;
50 [ -d /lib/udev/devices ] && cp -a /lib/udev/devices/* /dev/ >/dev/null 2>&1 || :
51 [ -d /lib64/udev/devices ] && cp -a /lib64/udev/devices/* /dev/ >/dev/null 2>&1 || :
55 if [ -x /sbin/pidof ]; then
56 pid=$(/sbin/pidof -x udevd)
57 [ -n "$pid" ] && kill $pid
61 set_hotplug_handler() {
62 echo "" > /proc/sys/kernel/hotplug
71 # mount the devtmpfs on $udev_root, if not already done
72 awk "\$2 == \"$udev_root\" && \$3 == \"devtmpfs\" { exit 1 }" /proc/mounts && {
74 if grep -qF "none $udev_root/pts " /proc/mounts; then
75 PTSDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX)
76 mount --move $udev_root/pts "$PTSDIR"
79 if grep -qF "none $udev_root/shm " /proc/mounts; then
80 SHMDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX)
81 mount --move $udev_root/shm "$SHMDIR"
84 mount -n -o mode=0755 -t devtmpfs devtmpfs "$udev_root"
85 mkdir -m 0755 $udev_root/pts
86 mkdir -m 0755 $udev_root/shm
87 if [ -n "$PTSDIR" ]; then
88 mount --move "$PTSDIR" $udev_root/pts
91 if [ -n "$SHMDIR" ]; then
92 mount --move "$SHMDIR" $udev_root/shm
99 kill_udevd > "$udev_root/null" 2>&1
109 if [ -f "/sys/class/tty/console/uevent" ]; then
110 # Setting default hotplug handler
114 # retrigger all events
115 # Udev finds it's own way of making this dir
116 # and making it by hand makes udevsettle
118 #mkdir -p /dev/.udev/queue
122 # wait for the events to finish
126 echo "Kernel too old for this udev version"
130 [ $ret -eq 0 ] && ok || fail