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|
#!/bin/sh -e
PATH="/usr/sbin:/usr/bin:/sbin:/bin"
UDEVSTART=/sbin/udevstart
# default maximum size of the /dev ramfs
ramfs_size="1M"
[ -x $UDEVSTART ] || exit 0
. /etc/udev/udev.conf
case "$(uname -r)" in
2.[012345].*)
echo "udev requires a kernel >= 2.6, not started."
exit 0
;;
esac
if ! grep -q '[[:space:]]ramfs$' /proc/filesystems; then
echo "udev requires ramfs support, not started."
exit 0
fi
if [ ! -e /proc/sys/kernel/hotplug ]; then
echo "udev requires hotplug support, not started."
exit 0
fi
##############################################################################
# we need to unmount /dev/pts/ and remount it later over the ramfs
unmount_devpts() {
if mountpoint -q /dev/pts/; then
umount -l /dev/pts/
fi
if mountpoint -q /dev/shm/; then
umount -l /dev/shm/
fi
}
# mount a ramfs over /dev, if somebody did not already do it
mount_ramfs() {
if grep -E -q "^[^[:space:]]+ /dev ramfs" /proc/mounts; then
return 0
fi
# /.dev is used by /sbin/MAKEDEV to access the real /dev directory.
# if you don't like this, remove /.dev/.
[ -d /.dev ] && mount --bind /dev /.dev
echo -n "Mounting a ramfs over /dev..."
mount -n -o size=$ramfs_size,mode=0755 -t ramfs none /dev
echo "done."
}
# I hate this hack. -- Md
make_extra_nodes() {
if [ -f /etc/udev/links.conf ]; then
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/$name
;;
M)
mknod --mode=600 /dev/$name $arg1
;;
*)
echo "unparseable line ($type $name $arg1)"
;;
esac
done
fi
}
##############################################################################
if [ "$udev_root" != "/dev/" ]; then
echo "WARNING: udev_root != /dev/"
case "$1" in
start)
if [ -e "$udev_root/.udev.tdb" ]; then
if mountpoint -q /dev/; then
echo "FATAL: udev is already active on $udev_root."
exit 1
else
echo "WARNING: .udev.tdb already exists on the old $udev_root!"
fi
fi
mount -n -o size=$ramfs_size,mode=0755 -t ramfs none $udev_root
echo -n "Creating initial device nodes..."
$UDEVSTART
echo "done."
;;
stop)
start-stop-daemon -K -x /sbin/udevd
echo -n "Unmounting $udev_root..."
# unmounting with -l should never fail
if umount -l $udev_root; then
echo "done."
else
echo "failed."
fi
;;
restart|force-reload)
$0 stop
$0 start
;;
*)
echo "Usage: /etc/init.d/udev {start|stop|restart|force-reload}"
exit 1
;;
esac
exit 0
fi # udev_root != /dev/
##############################################################################
# When modifying this script, do not forget that between the time that
# the new /dev has been mounted and udevstart has been run there will be
# no /dev/null. This also means that you cannot use the "&" shell command.
case "$1" in
start)
if [ -e "$udev_root/.udev.tdb" ]; then
if mountpoint -q /dev/; then
echo "FATAL: udev is already active on $udev_root."
exit 1
else
echo "WARNING: .udev.tdb already exists on the old $udev_root!"
fi
fi
unmount_devpts
mount_ramfs
ACTION=add
echo -n "Creating initial device nodes..."
$UDEVSTART
make_extra_nodes
echo "done."
# /etc/init.d/mountvirtfs start
;;
stop)
start-stop-daemon -K -x /sbin/udevd
unmount_devpts
echo -n "Unmounting /dev..."
# unmounting with -l should never fail
if umount -l /dev; then
echo "done."
umount -l /.dev || true
# /etc/init.d/mountvirtfs start
else
echo "failed."
fi
;;
restart|force-reload)
start-stop-daemon -K -x /sbin/udevd
echo -n "Recreating device nodes..."
ACTION=add
$UDEVSTART
make_extra_nodes
echo "done."
;;
*)
echo "Usage: /etc/init.d/udev {start|stop|restart|force-reload}"
exit 1
;;
esac
exit 0
|
