src/install+setup/install/mountdest.sh

   1 ###############################################################################
   2 #                                                                             #
   3 # IPFire.org - A linux based firewall                                         #
   4 # Copyright (C) 2007-2012  IPFire Team  <info@ipfire.org>                     #
   5 #                                                                             #
   6 # This program is free software: you can redistribute it and/or modify        #
   7 # it under the terms of the GNU General Public License as published by        #
   8 # the Free Software Foundation, either version 3 of the License, or           #
   9 # (at your option) any later version.                                         #
  10 #                                                                             #
  11 # This program is distributed in the hope that it will be useful,             #
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  14 # GNU General Public License for more details.                                #
  15 #                                                                             #
  16 # You should have received a copy of the GNU General Public License           #
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  18 #                                                                             #
  19 ###############################################################################
  20
  21 # Set histchars to an empty string so we are able to replace an
  22 # exclamation mark.
  23 histchars=
  24
  25 echo "Scanning for possible destination drives"
  26
  27 function _mount() {
  28         local what=${1}
  29
  30         # Don't mount if the device does not exist.
  31         [ -e "${what}" ] || return 1
  32
  33         mount ${what} /harddisk 2>/dev/null
  34 }
  35
  36 function _umount() {
  37         umount -l /harddisk 2>/dev/null
  38 }
  39
  40 function check_source_drive() {
  41         local device="/dev/${1}"
  42
  43         local ret=1
  44         local dev
  45         for dev in ${device} ${device}1; do
  46                 # Mount the device (if possible).
  47                 _mount ${dev} || continue
  48
  49                 if [ -n "$(ls /harddisk/ipfire-*.tlz 2>/dev/null)" ]; then
  50                         ret=0
  51                 fi
  52
  53                 _umount
  54
  55                 # Stop if the device has been detected as a source drive.
  56                 [ "${ret}" = "0" ] && break
  57         done
  58
  59         return ${ret}
  60 }
  61
  62 for path in /sys/block/*; do
  63         device=$(basename ${path})
  64
  65         # Skip devices which cannot be used.
  66         case "${device}" in
  67                 # Virtual devices.
  68                 loop*|ram*)
  69                         continue
  70                         ;;
  71                 # Floppy.
  72                 fd*)
  73                         continue
  74                         ;;
  75                 # Cd/Tape.
  76                 sr*)
  77                         continue
  78                         ;;
  79         esac
  80
  81         # Replace any exclamation marks (e.g. cciss!c0d0).
  82         device_=${device//!/\/}
  83
  84         # Guess if this could be a raid device.
  85         for dev in ${device_} ${device_}p1; do
  86                 if [ -e "/dev/${dev}" ]; then
  87                         device=${dev}
  88                         break
  89                 fi
  90         done
  91
  92         echo "Checking ${device_}"
  93         if check_source_drive ${device_}; then
  94                 echo "  is source drive - skipping"
  95                 continue
  96         fi
  97
  98         device_size=$(cat /sys/block/${device}/size)
  99         if [ "${device_size}" = "0" ]; then
 100                 echo "  is empty - skipping"
 101                 continue
 102         fi
 103
 104         # Found it.
 105         echo "  OK, this is it..."
 106         echo -n "${device_}" > /tmp/dest_device
 107
 108         # Disk size to GiB.
 109         device_size=$(( ${device_size} / 2097152 ))
 110
 111         # Build string with drive details
 112         device_str="/dev/${device_} - ${device_size} GiB -"
 113         device_str="${device_str} $(cat /sys/block/${device}/device/vendor)"
 114         device_str="${device_str} $(cat /sys/block/${device}/device/model)"
 115
 116         # Remove all whitespace.
 117         device_str=$(echo ${device_str})
 118
 119         echo -n "${device_str}" > /tmp/dest_device_info
 120
 121         # Exit code table:
 122         #  1: sda
 123         #  2: RAID
 124         # 10: nothing found
 125         case "${device_}" in
 126                 *p1|*c0d0)
 127                         exit 2
 128                         ;;
 129                 *)
 130                         exit 1
 131                         ;;
 132         esac
 133 done
 134
 135 # Nothing found.
 136 exit 10