testcases/pounder21/src/libidecd.sh

   1 #!/bin/bash
   2
   3 # Library to find CD devices.
   4 #
   5 # Copyright (C) 2003-2006 IBM
   6 #
   7 # This program is free software; you can redistribute it and/or
   8 # modify it under the terms of the GNU General Public License as
   9 # published by the Free Software Foundation; either version 2 of the
  10 # License, or (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 # 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, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20 # 02111-1307, USA.
  21
  22
  23 # Create a list of potential devices.  Note that this may pick up some non-block
  24 # devices; it is assumed that they will be filtered out by find_discs_with_media.
  25 function find_disc_devices() {
  26         NUM_DEVICES=`/bin/ls $(egrep '(cdr|dvd)' /etc/fstab | awk -F " " '{print $1}') /dev/cdr* /dev/dvd* /dev/cdrom/* /dev/sr* 2> /dev/null | sort | uniq | wc -l`
  27         if [ $NUM_DEVICES -lt 1 ]; then
  28                 # No CDs at all?
  29                 echo NONE
  30         fi
  31         /bin/ls $(egrep '(cdr|dvd)' /etc/fstab | awk -F " " '{print $1}') /dev/cdr* /dev/dvd* /dev/cdrom/* /dev/sr* 2> /dev/null | sort | uniq
  32 }
  33
  34 # Try to find a disc with media in it.  Hopefully, $DEFAULT_MOUNT already exists.
  35 function find_discs_with_media() {
  36         # If the caller doesn't specify a DEFAULT_MOUNT point, specify one.
  37         if [ -z "$DEFAULT_MOUNT" ]; then
  38                 DEFAULT_MOUNT=/mnt
  39         fi
  40         POTENTIAL_DEVICES=`find_disc_devices`
  41         # Grab a list of all CD/DVD devices that we can find.
  42         for i in `echo "$POTENTIAL_DEVICES"`
  43         do
  44                 # Did we get nothing at all?
  45                 if [ "$i" == "NONE" ]; then
  46                         echo NONE 0
  47                         return
  48                 fi
  49
  50                 # Is this a link pointing to a device that's in the
  51                 # list of potential discs AND isn't in fstab?
  52                 # We want to avoid considering /dev entries that are symlinked
  53                 # elsewhere ... but we also assume that anything in fstab was
  54                 # put there for a reason and ought to be considered anyway.
  55                 if [ -L "$i" ]; then
  56                         IN_LIST=`echo "$POTENTIAL_DEVICES" | grep "$(readlink $i)" -c`
  57                         if [ $IN_LIST -gt 0 ]; then
  58                                 IN_FSTAB=`grep "^$i[    ]" /etc/fstab -c`
  59                                 if [ $IN_FSTAB -eq 0 ]; then
  60                                         continue;
  61                                 fi
  62                         fi
  63                 fi
  64
  65                 # Block device?
  66                 if [ -b "$i" ]; then
  67                         IN_FSTAB=`grep -c "^$i[         ]" /etc/fstab`
  68                         FSTAB_TYPE=`grep "^$i[  ]" /etc/fstab | awk -F " " '{print $3}'`
  69                         if [ $IN_FSTAB -gt 0 -a "$FSTAB_TYPE" != "subfs" ]; then
  70                                 # This device is listed in fstab and is NOT of
  71                                 # type "subfs" (SLES9 weirdness); try to mount it.
  72                                 mount "$i" > /dev/null 2> /dev/null
  73                                 RESULT=$?
  74
  75                                 if [ $RESULT -eq 0 ]; then
  76                                         # Mounted ok!
  77                                         umount "$i"
  78                                         echo "$i" 1
  79                                         continue
  80                                 fi
  81                         fi
  82
  83                         # Not in fstab, or the mount failed.
  84                         mount "$i" "$DEFAULT_MOUNT" -t auto > /dev/null 2> /dev/null
  85                         RESULT=$?
  86
  87                         if [ $RESULT -eq 0 ]; then
  88                                 # Mounted ok once we gave it options.
  89                                 umount "$i"
  90                                 echo "$i" 0
  91                                 continue
  92                         fi
  93                 fi
  94         done
  95 }