packaging/scan_scsi.linux

   1 #!/bin/bash
   2 #
   3 # show generic devices for CDROM SCSI devices
   4 #
   5 # needs a mounted /proc filesystem, printf, echo and grep
   6 #
   7 # when invoked with a number, the n-th cdrom SCSI address is
   8 # printed.
   9 #
  10 # example: 'scan_scsi.linux 2' will print the SCSI settings for
  11 #          the second cdrom device, namely '0,4,0' in my
  12 #          system.
  13 #
  14 # BUGS: limited to 9 devices
  15 #
  16
  17 NUMBER=0
  18 LETTER=a
  19 while read ID; do
  20         if [ ".${ID%%' '}" = ".Attached devices:" ]; then
  21                 continue;
  22         fi
  23         read ignore;
  24         read ignore type ignore;
  25         echo $ID '  ' $type ' -> ' /dev/sg$NUMBER
  26         #echo $ID '  ' $type ' -> ' /dev/sg$NUMBER or /dev/sg$LETTER
  27         NUMBER=$(($NUMBER + 1))
  28 #done <test_scanscsi | grep "WORM\|CD-ROM" |
  29 done </proc/scsi/scsi | grep "WORM\|CD-ROM" | \
  30 (DRIVES=1
  31 while read CD_DRIVE; do
  32         if test $# -ne 0; then
  33                 if test $DRIVES -eq $1; then
  34                         CD_DRIVE=${CD_DRIVE#Host: scsi}
  35                         SCSIHOST=${CD_DRIVE%% *}
  36                         CHANNEL=${CD_DRIVE#*Channel: }
  37                         CHANNEL=${CHANNEL%% *}
  38                         SCSIID=${CD_DRIVE#*Id: }
  39                         SCSIID=${SCSIID%% *}
  40                         SCSILUN=${CD_DRIVE#*Lun: }
  41                         SCSILUN=${SCSILUN%% *}
  42                         #CD_DRIVE=${CD_DRIVE% or /dev/*}
  43                         echo ${CHANNEL},${SCSIID},${SCSILUN}
  44                         break;
  45                 fi
  46         else
  47                         echo ${CD_DRIVE}
  48         fi
  49         DRIVES=$(($DRIVES + 1))
  50 done)