Allow users to configure stuff in /dev once again by re-doing the devfs

script to read /etc/devfs.conf, and take appropriate actions based on
what it finds there.

The (commented out) examples in the new devfs.conf file are taken in
part from the old rc.devfs script.

etc/devfs.conf

@@ -0,0 +1,47 @@
+
+#  Copyright (c) 2003 The FreeBSD Project
+#  All rights reserved.
+# 
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions
+#  are met:
+#  1. Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#  2. Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+# 
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+#  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+#  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+#  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+#  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+#  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+#  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+#  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+#  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+#  SUCH DAMAGE.
+# 
+#  $FreeBSD$
+
+# These are examples of how to configure devices using /etc/rc.d/devfs.
+# The first parameter is always the action to take, the second is always the
+# existing device created by devfs, and the last is what you want to change.
+# The name of the action is only significant to the first unique character.
+#
+# Examples:
+
+# Historically X depended on this, but version 4.3.0 doesn't seem to anymore
+#link	ttyv0	vga
+
+# Commonly used by many ports
+#link	acd0	cdrom
+
+# Allow a user in the wheel group to query the smb0 device
+#perm	smb0	0660
+
+# Allow members of group operator to cat things to the speaker
+#own	speaker	root:operator
+#perm	speaker	0660
+

etc/rc.d/devfs

@@ -11,18 +11,31 @@
 . /etc/rc.subr
 
 name="devfs"
+start_cmd='read_devfs_conf'
+stop_cmd=':'
+
+read_devfs_conf()
+{
+	if [ -r /etc/devfs.conf ]; then
+		cd /dev
+		while read action device parameter; do
+			case "${action}" in
+			l*)	if [ -c ${device} -a ! -e ${parameter} ]; then
+					ln -fs ${device} ${parameter}
+				fi
+				;;
+			o*)	if [ -c ${device} ]; then
+					chown ${parameter} ${device}
+				fi
+				;;
+			p*)	if [ -c ${device} ]; then
+					chmod ${parameter} ${device}
+				fi
+				;;
+			esac
+		done < /etc/devfs.conf
+	fi
+}
 
 load_rc_config $name
-
-# Setup DEVFS, ie permissions, links etc.
-#
-if [ -c /dev/ttyv0 -a ! -e /dev/vga ];then
-	ln -fs /dev/ttyv0 /dev/vga
-fi
-
-# XXX - in case the user has a customized /etc/rc.devfs we need to keep
-#	pulling it in until we have a better way of doing this in rc.d.
-#
-if [ -r /etc/rc.devfs ]; then
-	sh /etc/rc.devfs
-fi
+run_rc_command "$1"