1 files changed, 119 insertions, 0 deletions
diff --git a/patches/bin/rescan-scsi-bus b/patches/bin/rescan-scsi-bus
new file mode 100644
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+#!/bin/sh
+# Skript to rescan SCSI bus, using the
+# scsi add-single-device mechanism
+# (w) 98/03/19 Kurt Garloff <kurt@garloff.de> (c) GNU GPL
+
+# This script is useful for automatically scanning for new
+# USB and IEEE1394 devices which will not show up automatically
+# if they use a LUN (logical unit number) other than 0.
+# To search all LUNS for new devices to enable, run like this:
+#
+# rescan-scsi-bus -l
+
+found=0
+rmvd=0
+
+# Return hosts. /proc/scsi/HOSTADAPTER/? must exist
+findhosts() {
+  hosts=
+  for name in /proc/scsi/*/?; do
+    name=${name#/proc/scsi/}
+    if test ! $name = scsi ; then
+      hosts="$hosts ${name#*/}"
+      echo "Host adapter ${name#*/} (${name%/*}) found."
+    fi
+  done
+}
+
+# Test if SCSI device $host $channen $id $lun exists
+# Outputs description from /proc/scsi/scsi, returns new
+testexist() {
+  grepstr="scsi$host Channel: 0$channel Id: 0*$id Lun: 0$lun"
+  new=`cat /proc/scsi/scsi | grep -e "$grepstr"`
+  if test ! -z "$new" ; then
+    cat /proc/scsi/scsi | grep -e "$grepstr"
+    cat /proc/scsi/scsi | grep -A2 -e "$grepstr" | tail -n 2
+  fi
+}
+
+# Perform search (scan $host)
+dosearch() {
+  for channel in $channelsearch; do
+    for id in $idsearch; do
+      for lun in $lunsearch; do
+        new=
+	devnr="$host $channel $id $lun"
+	echo "Scanning for device $devnr ..."
+	printf "OLD: "
+	testexist
+	if test ! -z "$remove" -a ! -z "$new" ; then
+	  echo "scsi remove-single-device $devnr" > /proc/scsi/scsi
+	  echo "scsi add-single-device $devnr" > /proc/scsi/scsi
+	  printf "\r\x1b[A\x1b[A\x1b[AOLD: "
+	  testexist
+	  if test -z "$new"; then
+            printf "\rDEL: \r\n\n\n\n"
+            rmvd=$(($rmvd+1))
+          fi
+	fi
+	if test -z "$new" ; then
+	  printf "\rNEW: "
+	  echo "scsi add-single-device $devnr" > /proc/scsi/scsi
+	  testexist
+	  if test -z "$new"; then
+            printf "\r\x1b[A"
+          else
+            found=$(($found+1))
+          fi
+	fi
+      done
+    done
+  done
+}
+	  
+  
+# main
+if test @$1 = @--help -o @$1 = @-h ; then
+  echo "Usage: rescan-scsi-bus.sh [-l] [-w] [-c] [host [host ...]]"
+  echo " -l activates scanning for LUNs 0 .. 7 [default: 0]"
+  echo " -w enables scanning for device IDs 0 .. 15 [def.: 0 .. 7]"
+  echo " -r enables removing of devices        [default: disabled]"
+  echo " -c enables scanning of channels 0 1   [default: 0]"
+  echo " If hosts are given, only these are scanned [default: all]"
+  exit 0
+fi
+
+# defaults
+lunsearch="0"
+idsearch="0 1 2 3 4 5 6 7"
+channelsearch="0"
+remove=""
+
+# Scan options
+opt="$1"
+while test ! -z "$opt" -a -z "${opt##-*}"; do
+  opt=${opt#-}
+  case "$opt" in
+    l) lunsearch="0 1 2 3 4 5 6 7" ;;
+    w) idsearch="0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" ;;
+    c) channelsearch="0 1" ;;
+    r) remove=1 ;;
+    *) echo "Unknown option -$opt !" ;;
+  esac
+  shift
+  opt="$1"
+done    
+
+# Hosts given ?
+if test @$1 = @; then
+  findhosts
+else
+  hosts=$*
+fi
+
+for host in $hosts; do
+  dosearch
+done
+echo "$found new device(s) found.               "
+echo "$rmvd device(s) removed.                 "
+