Imported Upstream version 2.6.0

[debian/amanda] / changer-src / chg-null.sh

diff --git a/changer-src/chg-null.sh b/changer-src/chg-null.sh
new file mode 100644 (file)
index 0000000..2f9a90c
--- /dev/null
+++ b/changer-src/chg-null.sh
@@ -0,0 +1,101 @@
+#!@SHELL@ 
+#
+# Exit Status:
+# 0 Alles Ok
+# 1 Illegal Request
+# 2 Fatal Error
+#
+
+# try to hit all the possibilities here
+prefix="@prefix@"
+exec_prefix="@exec_prefix@"
+sbindir="@sbindir@"
+amlibexecdir="@amlibexecdir@"
+. "${amlibexecdir}/amanda-sh-lib.sh"
+
+debugdir=@AMANDA_DBGDIR@
+
+# add sbin and ucb dirs
+PATH="$PATH:/usr/sbin:/sbin:/usr/ucb"
+export PATH
+
+if [ -d "$debugdir" ]
+then
+       logfile=$debugdir/changer.debug
+else
+       logfile=/dev/null
+fi
+exec 2> $logfile
+set -x
+
+USE_VERSION_SUFFIXES="@USE_VERSION_SUFFIXES@"
+if test "$USE_VERSION_SUFFIXES" = "yes"; then
+       SUF="-@VERSION@"
+else
+       SUF=
+fi
+
+myname=$0
+
+EGREP='@EGREP@'
+
+firstslot=1
+totalslots=200
+
+changerfile=`amgetconf$SUF changerfile`
+
+tapedev="null:/dev/xxx$$"
+
+cleanfile=$changerfile-clean
+accessfile=$changerfile-access
+slotfile=$changerfile-slot
+[ ! -f $cleanfile ] && echo 0 > $cleanfile
+[ ! -f $accessfile ] && echo 0 > $accessfile
+[ ! -f $slotfile ] && echo $firstslot > $slotfile
+cleancount=`cat $cleanfile`
+accesscount=`cat $accessfile`
+slot=`cat $slotfile`
+
+rc=0
+
+case x$1 in
+
+x-slot) 
+
+    #
+    # handle special slots...
+    #
+    case "$2" in
+    current)   newslot=$slot           ; load=true;;
+    next)      newslot=`expr $slot + 1`; load=true;;
+    advance)   newslot=`expr $slot + 1`; load=false;;
+    prev)      newslot=`expr $slot - 1`; load=true;;
+    first)     newslot=0               ; load=true;;
+    last)      newslot=-1              ; load=true;;
+    *)         newslot=$2              ; load=true;;
+    esac
+
+    if [ 0 -gt $newslot ]
+    then
+       newslot=`expr $totalslots - 1`
+    fi
+
+    if [ $totalslots -le  $newslot ]
+    then
+       newslot=0
+    fi
+    echo $newslot > $changerfile-slot
+    slot=$newslot
+    echo $slot $tapedev
+    ;;
+
+x-info)
+    echo $slot $totalslots 1
+    ;;
+
+x-eject)
+    echo $slot $tapedev
+    ;;
+esac
+
+exit $rc