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Diffstat (limited to 'recipes/udev/udev-118/init')
| -rw-r--r-- | recipes/udev/udev-118/init | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/recipes/udev/udev-118/init b/recipes/udev/udev-118/init new file mode 100644 index 0000000000..e44c675f2f --- /dev/null +++ b/recipes/udev/udev-118/init @@ -0,0 +1,171 @@ +#!/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 +} + +# 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=$tmpfs_size,mode=0755 -t tmpfs udev /dev; then + umount /etc/udev + echo "udev requires tmpfs support, not started." + exit 1 + fi + + mkdir -p /dev/.static/dev + chmod 700 /dev/.static/ + # The mount options in busybox are non-standard... + if test -x /bin/mount.util-linux + then + /bin/mount.util-linux --move /etc/udev /dev/.static/dev + elif test -x /bin/busybox + then + busybox mount -n -o move /etc/udev /dev/.static/dev + else + echo "udev requires an identifiable mount command, not started." + umount /etc/udev + umount /dev + exit 1 + fi +} + +make_extra_nodes() { + [ -c /dev/null ] || mknod -m 666 /dev/null c 1 3 +# I hate this hack. -- Md + if [ "$(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[0134]|2.6.1[01234][!0-9]*) return 1 ;; + esac + return 0 +} + +# 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 +} + +############################################################################## + +PATH="/sbin:/bin:/usr/bin" + +[ -x /sbin/udevd ] || exit 0 + +# defaults +tmpfs_size="2M" + +. /etc/udev/udev.conf + +if ! supported_kernel; then + echo "udev requires a kernel >= 2.6.15, 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 +fi + +if [ ! -d /sys/class/ ]; then + echo "udev requires a mounted sysfs, 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. +case "$1" in + start) + unmount_devpts + mount_tmpfs + [ -d /proc/1 ] || mount -n /proc + + # /dev/null must be created before udevd is started + make_extra_nodes + + # It's all over netlink now + if [ -e /proc/sys/kernel/hotplug ]; then + echo "" > /proc/sys/kernel/hotplug + fi + + echo "Starting the hotplug events dispatcher" "udevd" + udevd --daemon + + echo "Synthesizing the initial hotplug events" + udevtrigger + udevsettle + ;; + + 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 + +exit 0 + |