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
  40 is_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
  63 init_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: ${_populate}"
 108 }
 109
 110 mdconfig2_start()
 111 {
 112         local _md _fs _mp _mounted _dev _config _type _file _owner _perms _files _populate _fsck_cmd _i
 113
 114         # If there are no devices return before loading geom_md.ko.
 115         if [ -z "${_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
 185 mdconfig2_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"
 211 if [ $# -gt 0 ]; then
 212         shift
 213 fi
 214 [ -n "$*" ] && _mdconfig2_list="$*"
 215
 216 load_rc_config $name
 217
 218 _mdconfig2_unit=0
 219 if [ -z "${_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${_mdconfig2_unit}"
 226                         _mdconfig2_unit=$((${_mdconfig2_unit} + 1))
 227                 fi
 228         done
 229 fi
 230
 231 run_rc_command "${_mdconfig2_cmd}"