tags/udev-162-r2/write_root_link_rule.sh

#!/bin/sh
# $Header: /root/magellan-cvs/src/udev/write_root_link_rule.sh,v 1.2 2008-12-22 20:30:09 niro Exp $
#
# This script should run before doing udevtrigger at boot.
# It will create a rule matching the device directory / is on, and
# creating /dev/root symlink pointing on its device node.
#
# This is especially useful for hal looking at /proc/mounts containing
# a line listing /dev/root as device:
#   /dev/root / reiserfs rw 0 0
# 
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation version 2 of the License.
#
# (c) 2007-2008 Matthias Schwarzott <zzam@gentoo.org>

eval $(udevadm info --export --export-prefix="ROOT_" --device-id-of-file=/)

[ $? = 0 ] || exit 0
[ "$ROOT_MAJOR" = 0 ] && exit 0

DIR=/dev/.udev/rules.d
[ -d "$DIR" ] || mkdir -p "$DIR"
RULES=$DIR/10-root-link.rules

echo "# Created by /lib/udev/write_root_link_rule" > "${RULES}"
echo "# This rule should create /dev/root as link to real root device." >> "${RULES}"
echo "SUBSYSTEM==\"block\", ENV{MAJOR}==\"$ROOT_MAJOR\", ENV{MINOR}==\"$ROOT_MINOR\", SYMLINK+=\"root\"" >> "${RULES}"
1	niro	516	#!/bin/sh
2	niro	716	# $Header: /root/magellan-cvs/src/udev/write_root_link_rule.sh,v 1.2 2008-12-22 20:30:09 niro Exp $
3	niro	516	#
4			# This script should run before doing udevtrigger at boot.
5			# It will create a rule matching the device directory / is on, and
6			# creating /dev/root symlink pointing on its device node.
7			#
8			# This is especially useful for hal looking at /proc/mounts containing
9			# a line listing /dev/root as device:
10			# /dev/root / reiserfs rw 0 0
11			#
12			# This program is free software; you can redistribute it and/or modify it
13			# under the terms of the GNU General Public License as published by the
14			# Free Software Foundation version 2 of the License.
15			#
16	niro	716	# (c) 2007-2008 Matthias Schwarzott <zzam@gentoo.org>
17	niro	516
18	niro	716	eval $(udevadm info --export --export-prefix="ROOT_" --device-id-of-file=/)
19	niro	516
20	niro	716	[ $? = 0 ] \|\| exit 0
21			[ "$ROOT_MAJOR" = 0 ] && exit 0
22	niro	516
23	niro	716	DIR=/dev/.udev/rules.d
24			[ -d "$DIR" ] \|\| mkdir -p "$DIR"
25			RULES=$DIR/10-root-link.rules
26
27			echo "# Created by /lib/udev/write_root_link_rule" > "${RULES}"
28			echo "# This rule should create /dev/root as link to real root device." >> "${RULES}"
29			echo "SUBSYSTEM==\"block\", ENV{MAJOR}==\"$ROOT_MAJOR\", ENV{MINOR}==\"$ROOT_MINOR\", SYMLINK+=\"root\"" >> "${RULES}"