trunk/busybox/mdev.rc

#!/bin/sh
# $Header: /root/magellan-cvs/src/busybox/mdev.rc,v 1.1 2010-08-22 16:43:06 niro Exp $

seed_dev()
{
	# seed /dev with some things that we know we need
	rc_print "  Seeding /dev with needed nodes ..."
	(
		[ ! -c /dev/console ] && mknod /dev/console c 5 1
		[ ! -c /dev/tty1 ] && mknod /dev/tty1 c 4 1
		[ ! -c /dev/null ] && mknod /dev/null c 1 3

		# create kmsg too, so udev can add its start-message to dmesg
		[ -c /dev/kmsg ] || mknod -m 660 /dev/kmsg c 1 11

		# copy over any persistant things
		if [[ -d /lib/udev/devices ]]
		then
			cp -RPp /lib/udev/devices/* /dev 2>/dev/null
		fi

		# not provided by sysfs but needed
		ln -snf /proc/self/fd /dev/fd
		ln -snf fd/0 /dev/stdin
		ln -snf fd/1 /dev/stdout
		ln -snf fd/2 /dev/stderr
		[[ -e /proc/kcore ]] && ln -snf /proc/kcore /dev/core

		# create problematic directories
		mkdir -p /dev/pts /dev/shm
	)
	evaluate_retval
}

# main functions
start_devicemanager()
{
	# create a ramdisk for populating mdev
	rc_print "Mounting mdev at /dev ..."
	# many video drivers needed exec access
	fstype=ramfs
	# tmpfs was suggested by Greg Kroah-Hartman
	kernel_supports_fs tmpfs && fstype=tmpfs
	# mount devtmpfs if supported
	kernel_supports_fs devtmpfs && fstype=devtmpfs
	mount -n -t ${fstype} mdev /dev -o exec,nosuid,mode=0755,size=1024
	evaluate_retval

	# other eeded device nodes with udev
	seed_dev

	if [ -e /proc/sys/kernel/hotplug ]
	then
		rc_print "  Using mdev for hotplug events ..."
		echo "/sbin/mdev" > /proc/sys/kernel/hotplug
		evaluate_retval
	else
		rc_print ${COLYELLOW}"  Kernel was not compiled with hotplug support !"
		print_status failure
	fi

	# load unix domain sockets if built as module
	if [ -e /proc/modules ]
	then
		modprobe -q unix 2>/dev/null
	fi

	rc_print "  Starting mdev ..."
	/sbin/mdev -s
	evaluate_retval

	# same thing as /dev/.devfsd
	touch /dev/.mdev
}

stop_devicemanager()
{
	return 0
}
1	niro	1113	#!/bin/sh
2			# $Header: /root/magellan-cvs/src/busybox/mdev.rc,v 1.1 2010-08-22 16:43:06 niro Exp $
3
4			seed_dev()
5			{
6			# seed /dev with some things that we know we need
7			rc_print " Seeding /dev with needed nodes ..."
8			(
9			[ ! -c /dev/console ] && mknod /dev/console c 5 1
10			[ ! -c /dev/tty1 ] && mknod /dev/tty1 c 4 1
11			[ ! -c /dev/null ] && mknod /dev/null c 1 3
12
13			# create kmsg too, so udev can add its start-message to dmesg
14			[ -c /dev/kmsg ] \|\| mknod -m 660 /dev/kmsg c 1 11
15
16			# copy over any persistant things
17			if [[ -d /lib/udev/devices ]]
18			then
19			cp -RPp /lib/udev/devices/* /dev 2>/dev/null
20			fi
21
22			# not provided by sysfs but needed
23			ln -snf /proc/self/fd /dev/fd
24			ln -snf fd/0 /dev/stdin
25			ln -snf fd/1 /dev/stdout
26			ln -snf fd/2 /dev/stderr
27			[[ -e /proc/kcore ]] && ln -snf /proc/kcore /dev/core
28
29			# create problematic directories
30			mkdir -p /dev/pts /dev/shm
31			)
32			evaluate_retval
33			}
34
35			# main functions
36			start_devicemanager()
37			{
38			# create a ramdisk for populating mdev
39			rc_print "Mounting mdev at /dev ..."
40			# many video drivers needed exec access
41			fstype=ramfs
42			# tmpfs was suggested by Greg Kroah-Hartman
43			kernel_supports_fs tmpfs && fstype=tmpfs
44			# mount devtmpfs if supported
45			kernel_supports_fs devtmpfs && fstype=devtmpfs
46			mount -n -t ${fstype} mdev /dev -o exec,nosuid,mode=0755,size=1024
47			evaluate_retval
48
49			# other eeded device nodes with udev
50			seed_dev
51
52			if [ -e /proc/sys/kernel/hotplug ]
53			then
54			rc_print " Using mdev for hotplug events ..."
55			echo "/sbin/mdev" > /proc/sys/kernel/hotplug
56			evaluate_retval
57			else
58			rc_print ${COLYELLOW}" Kernel was not compiled with hotplug support !"
59			print_status failure
60			fi
61
62			# load unix domain sockets if built as module
63			if [ -e /proc/modules ]
64			then
65			modprobe -q unix 2>/dev/null
66			fi
67
68			rc_print " Starting mdev ..."
69			/sbin/mdev -s
70			evaluate_retval
71
72			# same thing as /dev/.devfsd
73			touch /dev/.mdev
74			}
75
76			stop_devicemanager()
77			{
78			return 0
79			}