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	#!/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	}