mdconfig2 revision 160669 
1#!/bin/sh
2#
3# Copyright (c) 2006  The FreeBSD Project
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27# $FreeBSD: head/etc/rc.d/mdconfig2 160669 2006-07-25 17:19:00Z pjd $
28#
29
30# PROVIDE: mdconfig2
31# REQUIRE: mountcritremote
32# BEFORE: SERVERS
33
34. /etc/rc.subr
35
36name="mdconfig2"
37stop_cmd="mdconfig2_stop"
38start_cmd="mdconfig2_start"
39
40is_readonly()
41{
42	local _mp _ret
43
44	_mp=$1
45	_ret=`mount | while read _line; do
46		case ${_line} in
47		*" ${_mp} "*read-only*)
48			echo "yes"
49			;;
50		
51		*)
52			;;
53		esac;
54	done`
55
56	if [ -n "${_ret}" ]; then
57		return 0
58	else
59		return 1
60	fi
61}
62
63init_variables()
64{
65	local _i
66
67	_fs=""
68	_mp=""
69	_mounted="no"
70	_dev="/dev/${_md}"
71	eval _config=\$mdconfig_${_md}
72	eval _owner=\$mdconfig_${_md}_owner
73	eval _perms=\$mdconfig_${_md}_perms
74	eval _files=\$mdconfig_${_md}_files
75	eval _populate=\$mdconfig_${_md}_cmd
76
77	_type=${_config##*-t\ }
78	_type=${_type%%\ *}
79	if [ -z "${_type}" ]; then
80		err 1 "You need to specify \"-t <type>\" in mdconfig_${_md}"
81	fi
82
83	if [ "${_type}" = "vnode" ]; then
84		_file=${_config##*-f\ }
85		_file=${_file%%\ *}
86		if [ -z "${_file}" ]; then
87			err 2 "You need to specify \"-f <file>\" in mdconfig_${_md} for vnode devices"
88		fi
89
90		if [ "${_file}" != "${_file%.uzip}" ]; then
91			# Load geom_uzip kernel module if needed
92			kldstat -q -m g_uzip || kldload geom_uzip || err 1 "geom_uzip failed to load."
93			_dev="/dev/${_md}.uzip"
94		fi
95		for _i in `df ${_file} 2>/dev/null`; do _fs=${_i}; done
96	fi
97
98	# Debugging help.
99	debug "${_md} config: ${_config}"
100	debug "${_md} type: ${_type}"
101	debug "${_md} dev: ${_dev}"
102	debug "${_md} file: ${_file}"
103	debug "${_md} fs: ${_fs}"
104	debug "${_md} owner: ${_owner}"
105	debug "${_md} perms: ${_perms}"
106	debug "${_md} files: ${_files}"
107	debug "${_md} populate cmd: ${_populate}"
108}
109
110mdconfig2_start()
111{
112	local _md _fs _mp _mounted _dev _config _type _file _owner _perms _files _populate _fsck_cmd _i
113
114	# If there are no devices return before loading geom_md.ko.
115	if [ -z "${_mdconfig2_list}" ]; then
116		return
117	fi
118
119	kldstat -q -m g_md || kldload geom_md || err 1 "geom_md failed to load."
120
121	for _md in ${_mdconfig2_list}; do
122		init_variables ${_md}
123		if [ ! -r ${_file} ]; then
124			err 3 "${_file} doesn't exist"
125			continue
126		fi
127		# First pass: create md(4) vnode devices from files stored on
128		# non-root partition. Swap and malloc md(4) devices have already
129		# been created.
130		if [ "${_type}" = "vnode" -a "${_fs}" != "/" ]; then
131			if is_readonly ${_fs}; then
132				warn "${_fs} is mounted read-only, skipping ${_md}."
133				continue
134			fi
135			if mdconfig -l -u ${_md} >/dev/null 2>&1; then
136				err 3 "${_md} already exists"
137			fi
138			echo "Creating ${_md} device (${_type})."
139			if ! mdconfig -a ${_config} -u ${_md}; then
140				echo "Creating ${_md} device failed, moving on."
141				continue
142			fi
143			# Skip fsck for uzip devices.
144			if [ "${_file}" != "${_file%.uzip}" ]; then
145				_fsck_cmd=":"
146			elif checkyesno background_fsck; then
147				_fsck_cmd="fsck -F"
148			else
149				_fsck_cmd="fsck"
150			fi
151			if ! eval ${_fsck_cmd} -p ${_dev} >/dev/null; then
152				echo "Fsck failed on ${_dev}, not mounting the filesystem."
153				continue
154			fi
155			if mount -d ${_dev} >/dev/null 2>&1; then
156				echo "Mounting ${_dev}."
157				mount ${_dev}
158			fi
159		fi
160
161		for _i in `df ${_dev} 2>/dev/null`; do _mp=${_i}; done
162		if [ ! -z "${_mp}" -a "${_mp}" = "${_mp%%%}" ]; then
163			_mounted="yes"
164		fi
165
166		if checkyesno _mounted; then
167			# Second pass: change permissions and ownership.
168			[ -z "${_owner}" ] || chown -f ${_owner} ${_dev} ${_mp}
169			[ -z "${_perms}" ] || chmod -f ${_perms} ${_dev} ${_mp}
170
171			# Third pass: populate with foreign files.
172			if [ -n "${_files}" -o -n "${_populate}" ]; then
173				echo "Populating ${_dev}."
174			fi
175			if [ -n "${_files}" ]; then
176				cp -Rp ${_files} ${_mp}
177			fi
178			if [ -n "${_populate}" ]; then
179				eval ${_populate}
180			fi
181		fi
182	done
183}
184
185mdconfig2_stop()
186{
187	local _md _fs _mp _mounted _dev _config _type _file _owner _perms _files _populate
188
189	for _md in ${_mdconfig2_list}; do
190		init_variables ${_md}
191		if [ "${_type}" = "vnode" ]; then
192			for i in `df ${_dev} 2>/dev/null`; do _mp=$i; done
193			if [ ! -r "${_file}" -o "${_fs}" = "/" ]; then
194				continue
195			fi
196			if [ -z "${_mp}" -o "${_mp}" != "${_mp%%%}" ]; then
197				echo "Device ${_dev} isn't mounted."
198			else
199				echo "Umounting ${_dev}."
200				umount ${_dev}
201			fi
202			if mdconfig -l -u ${_md} >/dev/null 2>&1; then
203				echo "Destroying ${_md}."
204				mdconfig -d -u ${_md}
205			fi
206		fi
207	done
208}
209
210_mdconfig2_cmd="$1"
211if [ $# -gt 0 ]; then
212        shift
213fi
214[ -n "$*" ] && _mdconfig2_list="$*"
215
216load_rc_config $name
217
218_mdconfig2_unit=0
219if [ -z "${_mdconfig2_list}" ]; then
220	while :; do
221		eval _mdconfig2_config=\$mdconfig_md${_mdconfig2_unit}
222		if [ -z "${_mdconfig2_config}" ]; then
223			break
224		else
225			_mdconfig2_list="${_mdconfig2_list}${_mdconfig2_list:+ }md${_mdconfig2_unit}"
226			_mdconfig2_unit=$((${_mdconfig2_unit} + 1))
227		fi
228	done
229fi
230	
231run_rc_command "${_mdconfig2_cmd}"
232