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kaf24@firebug.cl.cam.ac.uk
3f37f70c65
In the external device migration script I am introducing a subtype (-subtype <subtype>) from which the script's name is formed. Also all unparsed parameters are passed to the called script. Signed-off-by: Stefan Berger <stefanb@us.ibm.com>
112 lines
2.9 KiB
Bash
112 lines
2.9 KiB
Bash
#!/bin/sh
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# Copyright (c) 2005 IBM Corporation
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of version 2.1 of the GNU Lesser General Public
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# License as published by the Free Software Foundation.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# This script is called by XenD for migration of external devices
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# It does not handle the migration of those devices itself, but
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# passes the requests on to further applications
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# It handles the low-level command line parsing and some of the
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# synchronization
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dir=$(dirname "$0")
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. "$dir/logging.sh"
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function ext_dev_migrate_usage() {
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cat <<EOF
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Pass the following command line parameters to the script:
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-step <n> : n-th migration step
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-host <host> : the destination host
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-domname <domain name> : name of the domain that is migrating
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-type <device type> : the type of device that is migrating
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-subtype <dev. subtype>: the subtype of the device
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-recover : indicates recovery request; an error
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occurred during migration
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-help : display this help screen
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EOF
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}
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# Parse the command line paramters. The following parameters must be
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# passed as the first ones in the sequence:
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# -step [required]
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# -host [required]
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# -domname [required]
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# -type [required]
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# -subtype [optional]
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# -recover [optional]
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# The remaining ones will be passed to the called function.
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function evaluate_params()
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{
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local step host domname typ recover filename func stype
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stype=""
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while [ 1 ]; do
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if [ "$1" == "-step" ]; then
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shift
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step=$1
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elif [ "$1" == "-host" ]; then
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shift
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host=$1
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elif [ "$1" == "-domname" ]; then
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shift
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domname=$1
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elif [ "$1" == "-type" ]; then
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shift
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typ=$1
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elif [ "$1" == "-subtype" ]; then
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shift
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stype="_$1"
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elif [ "$1" == "-recover" ]; then
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recover=1
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elif [ "$1" == "-help" ]; then
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ext_dev_migrate_usage
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exit
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else
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break
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fi
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shift
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done
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if [ "$step" == "" -o \
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"$host" == "" -o \
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"$typ" == "" -o \
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"$domname" == "" ]; then
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echo "Error: Parameter(s) missing (-step/-host/-type/-domname)"
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echo ""
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echo "$0 -help for usage."
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exit
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fi
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filename="$dir/$typ$stype-migration.sh"
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if [ ! -r $filename ]; then
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echo "Error: Could not find script '$filename'"
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return
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fi
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. "$filename"
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if [ "$recover" == "1" ]; then
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func="$typ"_recover
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eval $func $host $domname $step $*
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else
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func="$typ"_migration_step
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eval $func $host $domname $step $*
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fi
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}
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evaluate_params $*
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