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 echo "Scanning for possible destination drives"
  22
  23 function _mount() {
  24         local what=${1}
  25
  26         # Don't mount if the device does not exist.
  27         [ -e "${what}" ] || return 1
  28
  29         mount ${what} /harddisk 2>/dev/null
  30 }
  31
  32 function _umount() {
  33         umount -l /harddisk 2>/dev/null
  34 }
  35
  36 function check_source_drive() {
  37         local device="/dev/${1}"
  38
  39         local ret=1
  40         local dev
  41         for dev in ${device} ${device}1; do
  42                 # Mount the device (if possible).
  43                 _mount ${dev} || continue
  44
  45                 if [ -n "$(ls /harddisk/ipfire-*.tlz 2>/dev/null)" ]; then
  46                         ret=0
  47                 fi
  48
  49                 _umount
  50
  51                 # Stop if the device has been detected as a source drive.
  52                 [ "${ret}" = "0" ] && break
  53         done
  54
  55         return ${ret}
  56 }
  57
  58 for path in /sys/block/*; do
  59         device=$(basename ${path})
  60
  61         # Skip devices which cannot be used.
  62         case "${device}" in
  63                 # Virtual devices.
  64                 loop*|ram*)
  65                         continue
  66                         ;;
  67                 # Floppy.
  68                 fd*)
  69                         continue
  70                         ;;
  71         esac
  72
  73         # Guess if this could be a raid device.
  74         for dev in ${device} ${device}p1; do
  75                 if [ -e "/dev/${dev}" ]; then
  76                         device=${dev}
  77                         break
  78                 fi
  79         done
  80
  81         echo "Checking ${device}"
  82         if check_source_drive ${device}; then
  83                 echo "  is source drive - skipping"
  84                 continue
  85         fi
  86
  87         # Found it.
  88         echo "  OK, this is it..."
  89         echo -n "${device}" > /tmp/dest_device
  90
  91         # Exit code table:
  92         #  1: sda
  93         #  2: RAID
  94         # 10: nothing found
  95         case "${device}" in
  96                 *p1)
  97                         exit 2
  98                         ;;
  99                 *)
 100                         exit 1
 101                         ;;
 102         esac
 103 done
 104
 105 # Nothing found.
 106 exit 10