[PATCH] replace tdb database by simple lockless file database

[elogind.git] / etc / init.d / udev

diff --git a/etc/init.d/udev b/etc/init.d/udev
index c540057d21ae82b925ed0d56286bc8f354150304..8726090d44f5374d12ba40c9e0f3b4fe2e43406f 100644 (file)
--- a/etc/init.d/udev
+++ b/etc/init.d/udev
@@ -1,30 +1,22 @@
-#! /bin/bash
+#! /bin/sh
 #
-# random       init script to setup /udev
+# udev init script to setup /udev
 #
 # chkconfig: 2345 20 80
 # description: manage user-space device nodes in /udev
 
 . /etc/rc.d/init.d/functions
 
-udev_dir=/udev
+. /etc/udev/udev.conf
+
+prog=udev
 sysfs_dir=/sys
 bin=/sbin/udev
+udevd=/sbin/udevd
+udev_root=/udev
 
-case "$1" in
-  start)
-       if [ ! -d $udev_dir ]; then
-               mkdir $udev_dir
-       fi
-       if [ ! -d $sysfs_dir ]; then
-               exit 1
-       fi
-       # propogate /udev from /sys - we only need this while we do not
-       # have initramfs and an early user-space with which to do early
-       # device bring up
-       action "Creating initial udev device nodes: " /bin/true
-       export ACTION=add
-       # add block devices and their partitions
+run_udev () {
+       # handle block devices and their partitions
        for i in ${sysfs_dir}/block/*; do
                # add each drive
                export DEVPATH=${i#${sysfs_dir}}
@@ -49,21 +41,81 @@ case "$1" in
                        fi
                done
        done
+       return 0
+}
+
+make_extra_nodes () {
+       # there are a few things that sysfs does not export for us.
+       # these things go here (and remember to remove them in 
+       # remove_extra_nodes()
+       #
+       # Thanks to Gentoo for the initial list of these.
+       ln -snf /proc/self/fd $udev_root/fd
+       ln -snf /proc/self/fd/0 $udev_root/stdin
+       ln -snf /proc/self/fd/1 $udev_root/stdout
+       ln -snf /proc/self/fd/2 $udev_root/stderr
+       ln -snf /proc/kcore $udev_root/core
+       #ln -snf /proc/asound/oss/sndstat $udev_root/sndstat
+}
+
+remove_extra_nodes () {
+       # get rid of the extra nodes created in make_extra_nodes()
+       rm $udev_root/fd
+       rm $udev_root/stdin
+       rm $udev_root/stdout
+       rm $udev_root/stderr
+       rm $udev_root/core
+       #rm $udev_root/sndstat
+}
+
+case "$1" in
+  start)
+       # don't use udev if sysfs is not mounted.
+       if [ ! -d $sysfs_dir/block ]; then
+               exit 1
+       fi
+       if [ ! -d $udev_root ]; then
+               mkdir $udev_root
+       fi
+
+       # remove the database if it is there as we always want to start fresh
+       if [ -f $udev_root/.udevdb ]; then
+               rm -rf $udev_root/.udevdb
+       fi
+
+       # propogate /udev from /sys - we only need this while we do not
+       # have initramfs and an early user-space with which to do early
+       # device bring up
+       export ACTION=add
+       echo -n $"Creating initial udev device nodes:"
+       run_udev
+       make_extra_nodes
+
+       # We want to start udevd ourselves if it isn't already running.  This
+       # lets udevd run at a sane nice level...
+       $udevd &
+
+       success /bin/true
+       echo
+       touch /var/lock/subsys/udev
        ;;
   stop)
        # be careful
-       action "Removing udev device nodes: " /bin/true
-       if [ $udev_dir -a "$udev_dir" != "/" ]; then
-               # clear out /udev
-               rm -rf ${udev_dir}/*
-       fi
+       echo -n $"Removing udev device nodes: "
+       export ACTION=remove
+       run_udev 
+       remove_extra_nodes
+       success /bin/true
+       echo
+       rm -f /var/lock/subsys/udev
        ;;
   status)
-       if [ -d $udev_dir ]; then
-               echo "the udev device node directory exists"
-       else
-               echo "the udev device node directory does not exist"
+       if [ -f /var/lock/subsys/udev ]; then
+               echo $"$prog has run"
+               exit 0
        fi
+       echo $"$prog is stopped"
+       exit 3
        ;;
   restart)
        $0 stop