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#!/usr/bin/env bash
#
# kvmx-supervise handles all registered kvmx instances in a system
#
# Copyright (C) 2017 Silvio Rhatto - rhatto at riseup.net
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation, either version 3 of the License,
# or any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Parameters
BASENAME="`basename $0`"
DIRNAME="`dirname $0`"
INSTANCES="`ls -1 /home/*/.config/kvmx/*`"
ACTION="$1"
# Load basic functions
export APP_BASE="`$DIRNAME/kvmx app_base`"
source $APP_BASE/lib/kvmx/functions || exit 1
# Calculate version
VERSION="`$APP_BASE/kvmx version`"
# Initialize
function __kvmx_supervise_initialize {
if [ "`whoami`" != "root" ]; then
echo "$BASENAME: needs root privileges"
exit 1
fi
}
# Display usage
function kvmx_supervise_usage {
echo "$BASENAME $VERSION - virtual machine supervisor"
echo ""
echo "usage: $BASENAME <action> [options]"
echo ""
echo "available actions:"
echo ""
grep "^function kvmx_supervise_" $0 | cut -d ' ' -f 2 | \
sed -e 's/kvmx_supervise_//' | sort | xargs -L 6 | column -t -c 6 | sed -e 's/^/\t/'
echo ""
#local list="`kvmx_supervise_list`"
#if [ ! -z "$list" ]; then
# echo "available virtual machines:"
# echo ""
# echo "$list" | sed -e 's/^/\t/'
# echo ""
#fi
exit 1
}
# Call
function kvmx_supervise_call {
local user="$1"
local vm="$2"
local params=($*)
shift 2
# Check parameters
if [ -z "$vm" ]; then
kvmx_supervise_usage
exit 1
fi
# Check for existing VM
if [ ! -e "/home/$user/.config/kvmx/$2" ]; then
kvmx_supervise_usage
exit 1
fi
# Operate only with VMs configured with supervise_manage=1
# Specify /bin/bash to avoid restricted shells like kvmx-shell
supervise_manage="`su $user -s /bin/bash -c "kvmx config $vm supervise_manage"`"
# Dispatch
if [ "$supervise_manage" == "1" ]; then
su $user -s /bin/bash -c "kvmx ${params[0]} $vm ${params[@]:1}"
fi
}
# Foreach
function kvmx_supervise_foreach {
local user
local vm
for instance in $INSTANCES; do
user="`echo $instance | cut -d / -f 3`"
vm="`basename $instance`"
kvmx_supervise_call $user $vm $*
done
}
# Status
function kvmx_supervise_status {
kvmx_supervise_foreach status
}
# Start
function kvmx_supervise_start {
kvmx_supervise_foreach start
}
# Stop
function kvmx_supervise_poweroff {
kvmx_supervise_foreach poweroff
}
# Restart
function kvmx_supervise_restart {
kvmx_supervise_foreach restart
}
# Dispatch
if type kvmx_supervise_$ACTION 2> /dev/null | grep -q "kvmx_supervise_$ACTION ()"; then
__kvmx_supervise_initialize $*
shift
kvmx_supervise_$ACTION $*
else
kvmx_supervise_usage
fi
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