[PATCH] fix HOWTO-udev_for_dev for udevdir

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

diff --git a/etc/init.d/udev b/etc/init.d/udev
index 69c1bab74eb7a0feade3d21859393bb2e49fb611..cd9074de091315a66c1b1cc65a883a66d66ef6c2 100644 (file)
--- a/etc/init.d/udev
+++ b/etc/init.d/udev
@@ -1,6 +1,6 @@
 #! /bin/bash
 #
-# random       init script to setup /udev
+# udev init script to setup /udev
 #
 # chkconfig: 2345 20 80
 # description: manage user-space device nodes in /udev
@@ -12,6 +12,8 @@
 prog=udev
 sysfs_dir=/sys
 bin=/sbin/udev
+udevd=/sbin/udevd
+udev_root=/udev
 
 run_udev () {
        # handle block devices and their partitions
@@ -42,9 +44,34 @@ run_udev () {
        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)
-       if [ ! -d $sysfs_dir ]; then
+       # don't use udev if sysfs is not mounted.
+       if [ ! -d $sysfs_dir/block ]; then
                exit 1
        fi
        if [ ! -d $udev_root ]; then
@@ -61,7 +88,13 @@ case "$1" in
        # device bring up
        export ACTION=add
        echo -n $"Creating initial udev device nodes:"
-       run_udev 
+       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
@@ -71,6 +104,7 @@ case "$1" in
        echo -n $"Removing udev device nodes: "
        export ACTION=remove
        run_udev 
+       remove_extra_nodes
        success /bin/true
        echo
        rm -f /var/lock/subsys/udev