trunk/udev/udev.rc

#!/bin/bash
# $Header: /root/magellan-cvs/src/udev/udev.rc,v 1.1 2010-07-14 13:15:13 niro Exp $

udev_version()
{
	local version=0

	if [[ -x /sbin/udev ]]
	then
		version=$(/sbin/udev -V)
		# We need it without a leading '0', else bash do the wrong thing
		version=${version##0}
		# Older udev's will print nothing
		[[ -z ${version} ]] && version=0
	elif [[ -x /sbin/udevd ]]
	then
		version=$(/sbin/udevd --version)
		version=${version##0}
		[[ -z ${version} ]] && version=0
	fi

	echo "${version}"
}

populate_udev()
{
	local opts

	# tell modprobe.sh to be verbose to $CONSOLE
	echo CONSOLE=${CONSOLE} > /dev/.udev_populate

	# populate /dev with devices already found by the kernel
	echo -e ${COLOREDSTAR}"  Populating /dev with existing devices through uevents ..."
	if [[ ${RC_COLDPLUG} = yes ]]
	then
		/sbin/udevadm trigger
	else
		# do not run any init-scripts
		/sbin/udevadm control --env do_not_run_plug_service=1

		# only create device nodes
		/sbin/udevadm trigger --attr-match=dev

		# run persistent-net stuff
		/sbin/udevadm trigger --subsystem-match=net
	fi
	evaluate_retval

	# loop until everything is finished
	echo -e ${COLOREDSTAR}"  Letting udev process events ..."
	/sbin/udevadm settle --timeout=60
	evaluate_retval

	# unset this variable
	/sbin/udevadm control --env do_not_run_plug_service=

	rm -f /dev/.udev_populate
	return 0
}

seed_dev()
{
	# seed /dev with some things that we know we need
	echo -e ${COLOREDSTAR}"  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 function
start_devicemanager()
{
	# check if /dev/console exists outside tmpfs
	[ -c /dev/console ] ; need_redirect=$?

	# create a ramdisk for populating udev
	echo -e ${COLOREDSTAR}"Mounting udev 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} udev /dev -o exec,nosuid,mode=0755,size=10M
	evaluate_retval

	# if a device tarball exists load it and if it is activated
	echo -e ${COLOREDSTAR}"Configurating system to use udev ..."
	if [[ ${RC_DEVICE_TARBALL} = yes ]]
	then
		echo -e ${COLOREDSTAR}"  Populating /dev with saved device nodes ..."
		tar -jxpf /lib/udev/state/devices.tar.bz2 -C /dev
		evaluate_retval
	fi

	# other eeded device nodes with udev
	seed_dev

	if [ -e /proc/sys/kernel/hotplug ]
	then
		echo -e ${COLOREDSTAR}"  Using netlink for hotplug events ..."
		echo "" > /proc/sys/kernel/hotplug
		evaluate_retval
	else
		echo -e ${COLOREDSTAR}${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

	echo -e ${COLOREDSTAR}"  Starting udevd daemon ..."
	if [ ${need_redirect} -eq 1 ]
	then
		# we need to open fds 0 1 2
		start-stop-daemon --start --exec /sbin/udevd -- --daemon </dev/console >/dev/console 2>/dev/console
	else
		start-stop-daemon --start --exec /sbin/udevd -- --daemon
	fi
	evaluate_retval

	# write root_link rule
	/lib/udev/write_root_link_rule
	# populate udev device nodes
	populate_udev

	# create nodes that udev can't
	echo -e ${COLOREDSTAR}"  Finializing udev configuration ..."
	[[ -x /sbin/dmsetup ]] && /sbin/dmsetup mknodes &>/dev/null
	[[ -x /sbin/lvm ]] && /sbin/lvm vgscan -P --mknodes --ignorelockingfailure &>/dev/null
	[[ -x /sbin/evms_activate ]] && /sbin/evms_activate -q &>/dev/null
	print_status success

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

stop_devicemanager()
{
	echo -e ${COLOREDSTAR}"  Stopping udevd daemon ..."
	start-stop-daemon --stop --exec /sbin/udevd
	evaluate_retval
}
1	niro	1058	#!/bin/bash
2			# $Header: /root/magellan-cvs/src/udev/udev.rc,v 1.1 2010-07-14 13:15:13 niro Exp $
3
4			udev_version()
5			{
6			local version=0
7
8			if [[ -x /sbin/udev ]]
9			then
10			version=$(/sbin/udev -V)
11			# We need it without a leading '0', else bash do the wrong thing
12			version=${version##0}
13			# Older udev's will print nothing
14			[[ -z ${version} ]] && version=0
15			elif [[ -x /sbin/udevd ]]
16			then
17			version=$(/sbin/udevd --version)
18			version=${version##0}
19			[[ -z ${version} ]] && version=0
20			fi
21
22			echo "${version}"
23			}
24
25			populate_udev()
26			{
27			local opts
28
29			# tell modprobe.sh to be verbose to $CONSOLE
30			echo CONSOLE=${CONSOLE} > /dev/.udev_populate
31
32			# populate /dev with devices already found by the kernel
33			echo -e ${COLOREDSTAR}" Populating /dev with existing devices through uevents ..."
34			if [[ ${RC_COLDPLUG} = yes ]]
35			then
36			/sbin/udevadm trigger
37			else
38			# do not run any init-scripts
39			/sbin/udevadm control --env do_not_run_plug_service=1
40
41			# only create device nodes
42			/sbin/udevadm trigger --attr-match=dev
43
44			# run persistent-net stuff
45			/sbin/udevadm trigger --subsystem-match=net
46			fi
47			evaluate_retval
48
49			# loop until everything is finished
50			echo -e ${COLOREDSTAR}" Letting udev process events ..."
51			/sbin/udevadm settle --timeout=60
52			evaluate_retval
53
54			# unset this variable
55			/sbin/udevadm control --env do_not_run_plug_service=
56
57			rm -f /dev/.udev_populate
58			return 0
59			}
60
61			seed_dev()
62			{
63			# seed /dev with some things that we know we need
64			echo -e ${COLOREDSTAR}" Seeding /dev with needed nodes ..."
65			(
66			[ ! -c /dev/console ] && mknod /dev/console c 5 1
67			[ ! -c /dev/tty1 ] && mknod /dev/tty1 c 4 1
68			[ ! -c /dev/null ] && mknod /dev/null c 1 3
69
70			# create kmsg too, so udev can add its start-message to dmesg
71			[ -c /dev/kmsg ] \|\| mknod -m 660 /dev/kmsg c 1 11
72
73			# copy over any persistant things
74			if [[ -d /lib/udev/devices ]]
75			then
76			cp -RPp /lib/udev/devices/* /dev 2>/dev/null
77			fi
78
79			# not provided by sysfs but needed
80			ln -snf /proc/self/fd /dev/fd
81			ln -snf fd/0 /dev/stdin
82			ln -snf fd/1 /dev/stdout
83			ln -snf fd/2 /dev/stderr
84			[[ -e /proc/kcore ]] && ln -snf /proc/kcore /dev/core
85
86			# create problematic directories
87			mkdir -p /dev/pts /dev/shm
88			)
89			evaluate_retval
90			}
91
92			# main function
93			start_devicemanager()
94			{
95			# check if /dev/console exists outside tmpfs
96			[ -c /dev/console ] ; need_redirect=$?
97
98			# create a ramdisk for populating udev
99			echo -e ${COLOREDSTAR}"Mounting udev at /dev ..."
100			# many video drivers needed exec access
101			fstype=ramfs
102			# tmpfs was suggested by Greg Kroah-Hartman
103			kernel_supports_fs tmpfs && fstype=tmpfs
104			# mount devtmpfs if supported
105			kernel_supports_fs devtmpfs && fstype=devtmpfs
106			mount -n -t ${fstype} udev /dev -o exec,nosuid,mode=0755,size=10M
107			evaluate_retval
108
109			# if a device tarball exists load it and if it is activated
110			echo -e ${COLOREDSTAR}"Configurating system to use udev ..."
111			if [[ ${RC_DEVICE_TARBALL} = yes ]]
112			then
113			echo -e ${COLOREDSTAR}" Populating /dev with saved device nodes ..."
114			tar -jxpf /lib/udev/state/devices.tar.bz2 -C /dev
115			evaluate_retval
116			fi
117
118			# other eeded device nodes with udev
119			seed_dev
120
121			if [ -e /proc/sys/kernel/hotplug ]
122			then
123			echo -e ${COLOREDSTAR}" Using netlink for hotplug events ..."
124			echo "" > /proc/sys/kernel/hotplug
125			evaluate_retval
126			else
127			echo -e ${COLOREDSTAR}${COLYELLOW}" Kernel was not compiled with hotplug support !"
128			print_status failure
129			fi
130
131			# load unix domain sockets if built as module
132			if [ -e /proc/modules ]
133			then
134			modprobe -q unix 2>/dev/null
135			fi
136
137			echo -e ${COLOREDSTAR}" Starting udevd daemon ..."
138			if [ ${need_redirect} -eq 1 ]
139			then
140			# we need to open fds 0 1 2
141			start-stop-daemon --start --exec /sbin/udevd -- --daemon </dev/console >/dev/console 2>/dev/console
142			else
143			start-stop-daemon --start --exec /sbin/udevd -- --daemon
144			fi
145			evaluate_retval
146
147			# write root_link rule
148			/lib/udev/write_root_link_rule
149			# populate udev device nodes
150			populate_udev
151
152			# create nodes that udev can't
153			echo -e ${COLOREDSTAR}" Finializing udev configuration ..."
154			[[ -x /sbin/dmsetup ]] && /sbin/dmsetup mknodes &>/dev/null
155			[[ -x /sbin/lvm ]] && /sbin/lvm vgscan -P --mknodes --ignorelockingfailure &>/dev/null
156			[[ -x /sbin/evms_activate ]] && /sbin/evms_activate -q &>/dev/null
157			print_status success
158
159			# same thing as /dev/.devfsd
160			touch /dev/.udev
161			}
162
163			stop_devicemanager()
164			{
165			echo -e ${COLOREDSTAR}" Stopping udevd daemon ..."
166			start-stop-daemon --stop --exec /sbin/udevd
167			evaluate_retval
168			}