etc/rc.d/mdconfig2

   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 # $FreeBSD$
  28 #
  29
  30 # PROVIDE: mdconfig2
  31 # REQUIRE: mountcritremote
  32 # BEFORE: SERVERS
  33
  34 . /etc/rc.subr
  35
  36 name="mdconfig2"
  37 stop_cmd="mdconfig2_stop"
  38 start_cmd="mdconfig2_start"
  39 start_precmd='[ -n "${_mdconfig2_list}" ]'
  40 required_modules="geom_md:g_md"
  41
  42 is_readonly()
  43 {
  44         local _mp _ret
  45
  46         _mp=$1
  47         _ret=`mount | while read _line; do
  48                 case ${_line} in
  49                 *" ${_mp} "*read-only*)
  50                         echo "yes"
  51                         ;;
  52
  53                 *)
  54                         ;;
  55                 esac;
  56         done`
  57
  58         if [ -n "${_ret}" ]; then
  59                 return 0
  60         else
  61                 return 1
  62         fi
  63 }
  64
  65 init_variables()
  66 {
  67         local _i
  68
  69         _fs=""
  70         _mp=""
  71         _mounted="no"
  72         _dev="/dev/${_md}"
  73         eval _config=\$mdconfig_${_md}
  74         eval _owner=\$mdconfig_${_md}_owner
  75         eval _perms=\$mdconfig_${_md}_perms
  76         eval _files=\$mdconfig_${_md}_files
  77         eval _populate=\$mdconfig_${_md}_cmd
  78
  79         _type=${_config##*-t\ }
  80         _type=${_type%%\ *}
  81         if [ -z "${_type}" ]; then
  82                 err 1 "You need to specify \"-t <type>\" in mdconfig_${_md}"
  83         fi
  84
  85         if [ "${_type}" = "vnode" ]; then
  86                 _file=${_config##*-f\ }
  87                 _file=${_file%%\ *}
  88                 if [ -z "${_file}" ]; then
  89                         err 2 "You need to specify \"-f <file>\" in mdconfig_${_md} for vnode devices"
  90                 fi
  91
  92                 if [ "${_file}" != "${_file%.uzip}" ]; then
  93                         _dev="/dev/${_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
 110 mdconfig2_start()
 111 {
 112         local _md _fs _mp _mounted _dev _config _type _file _owner _perms _files _populate _fsck_cmd _i
 113
 114         for _md in ${_mdconfig2_list}; do
 115                 init_variables ${_md}
 116                 if [ ! -r ${_file} ]; then
 117                         err 3 "${_file} doesn't exist"
 118                         continue
 119                 fi
 120                 # First pass: create md(4) vnode devices from files stored on
 121                 # non-root partition. Swap and malloc md(4) devices have already
 122                 # been created.
 123                 if [ "${_type}" = "vnode" -a "${_fs}" != "/" ]; then
 124                         if [ "${_file}" != "${_file%.uzip}" ]; then
 125                                 load_kld -m g_uzip geom_uzip || return 3
 126                         fi
 127                         if is_readonly ${_fs}; then
 128                                 warn "${_fs} is mounted read-only, skipping ${_md}."
 129                                 continue
 130                         fi
 131                         if mdconfig -l -u ${_md} >/dev/null 2>&1; then
 132                                 err 3 "${_md} already exists"
 133                         fi
 134                         echo "Creating ${_md} device (${_type})."
 135                         if ! mdconfig -a ${_config} -u ${_md}; then
 136                                 echo "Creating ${_md} device failed, moving on."
 137                                 continue
 138                         fi
 139                         # Skip fsck for uzip devices.
 140                         if [ "${_file}" != "${_file%.uzip}" ]; then
 141                                 _fsck_cmd=":"
 142                         elif checkyesno background_fsck; then
 143                                 _fsck_cmd="fsck -F"
 144                         else
 145                                 _fsck_cmd="fsck"
 146                         fi
 147                         if ! eval ${_fsck_cmd} -p ${_dev} >/dev/null; then
 148                                 echo "Fsck failed on ${_dev}, not mounting the filesystem."
 149                                 continue
 150                         fi
 151                         if mount -d ${_dev} >/dev/null 2>&1; then
 152                                 echo "Mounting ${_dev}."
 153                                 mount ${_dev}
 154                         fi
 155                 fi
 156
 157                 for _i in `df ${_dev} 2>/dev/null`; do _mp=${_i}; done
 158                 if [ ! -z "${_mp}" -a "${_mp}" = "${_mp%%%}" ]; then
 159                         _mounted="yes"
 160                 fi
 161
 162                 if checkyesno _mounted; then
 163                         # Second pass: change permissions and ownership.
 164                         [ -z "${_owner}" ] || chown -f ${_owner} ${_dev} ${_mp}
 165                         [ -z "${_perms}" ] || chmod -f ${_perms} ${_dev} ${_mp}
 166
 167                         # Third pass: populate with foreign files.
 168                         if [ -n "${_files}" -o -n "${_populate}" ]; then
 169                                 echo "Populating ${_dev}."
 170                         fi
 171                         if [ -n "${_files}" ]; then
 172                                 cp -Rp ${_files} ${_mp}
 173                         fi
 174                         if [ -n "${_populate}" ]; then
 175                                 eval ${_populate}
 176                         fi
 177                 fi
 178         done
 179 }
 180
 181 mdconfig2_stop()
 182 {
 183         local _md _fs _mp _mounted _dev _config _type _file _owner _perms _files _populate
 184
 185         for _md in ${_mdconfig2_list}; do
 186                 init_variables ${_md}
 187                 if [ "${_type}" = "vnode" ]; then
 188                         for i in `df ${_dev} 2>/dev/null`; do _mp=$i; done
 189                         if [ ! -r "${_file}" -o "${_fs}" = "/" ]; then
 190                                 continue
 191                         fi
 192                         if [ -z "${_mp}" -o "${_mp}" != "${_mp%%%}" ]; then
 193                                 echo "Device ${_dev} isn't mounted."
 194                         else
 195                                 echo "Umounting ${_dev}."
 196                                 umount ${_dev}
 197                         fi
 198                         if mdconfig -l -u ${_md} >/dev/null 2>&1; then
 199                                 echo "Destroying ${_md}."
 200                                 mdconfig -d -u ${_md}
 201                         fi
 202                 fi
 203         done
 204 }
 205
 206 _mdconfig2_cmd="$1"
 207 if [ $# -gt 0 ]; then
 208         shift
 209 fi
 210 [ -n "$*" ] && _mdconfig2_list="$*"
 211
 212 load_rc_config $name
 213
 214 _mdconfig2_unit=0
 215 if [ -z "${_mdconfig2_list}" ]; then
 216         while :; do
 217                 eval _mdconfig2_config=\$mdconfig_md${_mdconfig2_unit}
 218                 if [ -z "${_mdconfig2_config}" ]; then
 219                         break
 220                 else
 221                         _mdconfig2_list="${_mdconfig2_list}${_mdconfig2_list:+ }md${_mdconfig2_unit}"
 222                         _mdconfig2_unit=$((${_mdconfig2_unit} + 1))
 223                 fi
 224         done
 225 fi
 226
 227 run_rc_command "${_mdconfig2_cmd}"