tags/udev-185-r4/udev.rc

#!/bin/bash
# $Header: /root/magellan-cvs/src/udev/udev.rc,v 1.2 2010-08-18 00:57:31 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
	rc_print "  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
	rc_print "  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
	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 function
start_devicemanager()
{
	# check if /dev/console exists outside tmpfs
	[ -c /dev/console ] ; need_redirect=$?

	# create a ramdisk for populating udev
	if [[ -z $(grep '[[:space:]]/dev[[:space:]]' /proc/mounts | cut -d ' ' -f2) ]]
	then
		rc_print "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} dev /dev -o exec,nosuid,mode=0755,size=10M
		evaluate_retval
	fi

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

	# other needed device nodes with udev
	seed_dev

	if [ -e /proc/sys/kernel/hotplug ]
	then
		rc_print "  Using netlink for hotplug events ..."
		echo "" > /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 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
	rc_print "  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()
{
	rc_print "Stopping udevd daemon ..."
	start-stop-daemon --stop --exec /sbin/udevd
	evaluate_retval
}
1	niro	1058	#!/bin/bash
2	niro	1087	# $Header: /root/magellan-cvs/src/udev/udev.rc,v 1.2 2010-08-18 00:57:31 niro Exp $
3	niro	1058
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	niro	1289	rc_print " Populating /dev with existing devices through uevents ..."
34	niro	1058	if [[ ${RC_COLDPLUG} = yes ]]
35			then
36			/sbin/udevadm trigger
37			else
38			# do not run any init-scripts
39			/sbin/udevadm control --env do_not_run_plug_service=1
40
41			# only create device nodes
42			/sbin/udevadm trigger --attr-match=dev
43
44			# run persistent-net stuff
45			/sbin/udevadm trigger --subsystem-match=net
46			fi
47			evaluate_retval
48
49			# loop until everything is finished
50	niro	1289	rc_print " Letting udev process events ..."
51	niro	1058	/sbin/udevadm settle --timeout=60
52			evaluate_retval
53
54			# unset this variable
55			/sbin/udevadm control --env do_not_run_plug_service=
56
57			rm -f /dev/.udev_populate
58			return 0
59			}
60
61			seed_dev()
62			{
63			# seed /dev with some things that we know we need
64	niro	1289	rc_print " Seeding /dev with needed nodes ..."
65	niro	1058	(
66			[ ! -c /dev/console ] && mknod /dev/console c 5 1
67			[ ! -c /dev/tty1 ] && mknod /dev/tty1 c 4 1
68			[ ! -c /dev/null ] && mknod /dev/null c 1 3
69
70			# create kmsg too, so udev can add its start-message to dmesg
71			[ -c /dev/kmsg ] \|\| mknod -m 660 /dev/kmsg c 1 11
72
73			# copy over any persistant things
74			if [[ -d /lib/udev/devices ]]
75			then
76			cp -RPp /lib/udev/devices/* /dev 2>/dev/null
77			fi
78
79			# not provided by sysfs but needed
80			ln -snf /proc/self/fd /dev/fd
81			ln -snf fd/0 /dev/stdin
82			ln -snf fd/1 /dev/stdout
83			ln -snf fd/2 /dev/stderr
84			[[ -e /proc/kcore ]] && ln -snf /proc/kcore /dev/core
85
86			# create problematic directories
87			mkdir -p /dev/pts /dev/shm
88			)
89			evaluate_retval
90			}
91
92			# main function
93			start_devicemanager()
94			{
95			# check if /dev/console exists outside tmpfs
96			[ -c /dev/console ] ; need_redirect=$?
97
98			# create a ramdisk for populating udev
99	niro	1725	if [[ -z $(grep '[[:space:]]/dev[[:space:]]' /proc/mounts \| cut -d ' ' -f2) ]]
100			then
101			rc_print "Mounting udev at /dev ..."
102			# many video drivers needed exec access
103			fstype=ramfs
104			# tmpfs was suggested by Greg Kroah-Hartman
105			kernel_supports_fs tmpfs && fstype=tmpfs
106			# mount devtmpfs if supported
107			kernel_supports_fs devtmpfs && fstype=devtmpfs
108			mount -n -t ${fstype} dev /dev -o exec,nosuid,mode=0755,size=10M
109			evaluate_retval
110			fi
111	niro	1058
112			# if a device tarball exists load it and if it is activated
113	niro	1289	rc_print "Configurating system to use udev ..."
114	niro	1058	if [[ ${RC_DEVICE_TARBALL} = yes ]]
115			then
116	niro	1289	rc_print " Populating /dev with saved device nodes ..."
117	niro	1058	tar -jxpf /lib/udev/state/devices.tar.bz2 -C /dev
118			evaluate_retval
119			fi
120
121	niro	1724	# other needed device nodes with udev
122	niro	1058	seed_dev
123
124			if [ -e /proc/sys/kernel/hotplug ]
125			then
126	niro	1289	rc_print " Using netlink for hotplug events ..."
127	niro	1058	echo "" > /proc/sys/kernel/hotplug
128			evaluate_retval
129			else
130	niro	1289	rc_print ${COLYELLOW}" Kernel was not compiled with hotplug support !"
131	niro	1058	print_status failure
132			fi
133
134			# load unix domain sockets if built as module
135			if [ -e /proc/modules ]
136			then
137			modprobe -q unix 2>/dev/null
138			fi
139
140	niro	1289	rc_print " Starting udevd daemon ..."
141	niro	1058	if [ ${need_redirect} -eq 1 ]
142			then
143			# we need to open fds 0 1 2
144			start-stop-daemon --start --exec /sbin/udevd -- --daemon </dev/console >/dev/console 2>/dev/console
145			else
146			start-stop-daemon --start --exec /sbin/udevd -- --daemon
147			fi
148			evaluate_retval
149
150			# write root_link rule
151			/lib/udev/write_root_link_rule
152			# populate udev device nodes
153			populate_udev
154
155			# create nodes that udev can't
156	niro	1289	rc_print " Finializing udev configuration ..."
157	niro	1058	[[ -x /sbin/dmsetup ]] && /sbin/dmsetup mknodes &>/dev/null
158			[[ -x /sbin/lvm ]] && /sbin/lvm vgscan -P --mknodes --ignorelockingfailure &>/dev/null
159			[[ -x /sbin/evms_activate ]] && /sbin/evms_activate -q &>/dev/null
160			print_status success
161
162			# same thing as /dev/.devfsd
163			touch /dev/.udev
164			}
165
166			stop_devicemanager()
167			{
168	niro	1289	rc_print "Stopping udevd daemon ..."
169	niro	1058	start-stop-daemon --stop --exec /sbin/udevd
170			evaluate_retval
171			}