config/extrahd/extrahd.pl

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2023 IPFire Team  <info@ipfire.org>                           #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 log() {
  23         local message="${@}"
  24
  25         logger -t "extrahd" "${message}"
  26 }
  27
  28 extrahd_mount() {
  29         local _mountpoint="${1}"
  30
  31         local device
  32         local filesystem
  33         local mountpoint
  34         local rest
  35         local failed=0
  36
  37         while IFS=';' read -r device filesystem mountpoint rest; do
  38                 # Filter by mountpoint if set
  39                 if [ -n "${_mountpoint}" ] && [ "${mountpoint}" != "${_mountpoint}" ]; then
  40                         continue
  41                 fi
  42
  43                 # Check that the mountpoint starts with a slash
  44                 if [ "${mountpoint:0:1}" != "/" ]; then
  45                         log "Skipping invalid mountpoint: ${mountpoint}"
  46                         continue
  47                 fi
  48
  49                 # Skip mounting if something is already mounted at the mountpoint
  50                 if mountpoint "${mountpoint}" &>/dev/null; then
  51                         continue
  52                 fi
  53
  54                 # Ensure the mountpoint exists
  55                 mkdir --parents --mode=777 "${mountpoint}" &>/dev/null
  56
  57                 if mount --types "${filesystem}" "${device}" "${mountpoint}"; then
  58                         log "Successfully mounted ${device} to ${mountpoint}"
  59                 else
  60                         log "Could not mount ${device} to ${mountpoint}: $?"
  61                         failed=1
  62                 fi
  63         done < /var/ipfire/extrahd/devices
  64
  65         return ${failed}
  66 }
  67
  68 extrahd_umount() {
  69         local _mountpoint="${1}"
  70
  71         local device
  72         local filesystem
  73         local mountpoint
  74         local rest
  75         local failed=0
  76
  77         while IFS=';' read -r device filesystem mountpoint rest; do
  78                 # Filter by mountpoint if set
  79                 if [ -n "${_mountpoint}" ] && [ "${mountpoint}" != "${_mountpoint}" ]; then
  80                         continue
  81                 fi
  82
  83                 # Do not try to umount if nothing is mounted
  84                 if ! mountpoint "${mountpoint}" &>/dev/null; then
  85                         continue
  86                 fi
  87
  88                 # Umount and try lazy umount if failed
  89                 if umount --quiet --recursive "${mountpoint}" || \
  90                                 umount --quiet --recursive --lazy "${mountpoint}"; then
  91                         log "Successfully umounted ${device} from ${mountpoint}"
  92                 else
  93                         log "Could not umount ${device} from ${mountpoint}: $?"
  94                         failed=1
  95                 fi
  96         done < /var/ipfire/extrahd/devices
  97 }
  98
  99 main() {
 100         local command="${1}"
 101         shift
 102
 103         local rc=0
 104
 105         case "${command}" in
 106                 mount)
 107                         extrahd_mount "${@}" || rc="${?}"
 108                         ;;
 109                 umount)
 110                         extrahd_umount "${@}" || rc="${rc}"
 111                         ;;
 112                 scanhd)
 113                         exec /usr/local/bin/scanhd "${@}"
 114                         ;;
 115
 116                 # No command
 117                 "")
 118                         echo "${0}: No command given" >&2
 119                         rc=2
 120                         ;;
 121
 122                 # Unknown command
 123                 *)
 124                         echo "${0}: Unsupported command: ${command}" >&2
 125                         rc=2
 126                         ;;
 127         esac
 128
 129         return ${rc}
 130 }
 131
 132 # Call main()
 133 main "${@}" || exit ${?}