58 lines
1.4 KiB
Bash
58 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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set -eu
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# Configure QEMU for graceful shutdown
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QEMU_MONPORT=7100
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QEMU_POWERDOWN_TIMEOUT=8
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_QEMU_PID=/run/qemu.pid
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_QEMU_SHUTDOWN_COUNTER=/run/qemu.counter
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rm -f "${_QEMU_PID}"
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rm -f "${_QEMU_SHUTDOWN_COUNTER}"
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_trap(){
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func="$1" ; shift
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for sig ; do
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trap "$func $sig" "$sig"
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done
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}
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_graceful_shutdown() {
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set +e
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[ ! -f "${_QEMU_PID}" ] && return
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[ -f "${_QEMU_SHUTDOWN_COUNTER}" ] && return
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echo && echo "Received $1 signal, shutting down..."
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echo 0 > "${_QEMU_SHUTDOWN_COUNTER}"
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# Send the shutdown (system_powerdown) command to the QMP monitor
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echo 'system_powerdown' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}" > /dev/null
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while [ "$(cat ${_QEMU_SHUTDOWN_COUNTER})" -lt "${QEMU_POWERDOWN_TIMEOUT}" ]; do
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# Increase the counter
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echo $(($(cat ${_QEMU_SHUTDOWN_COUNTER})+1)) > ${_QEMU_SHUTDOWN_COUNTER}
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# Try to connect to qemu
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if echo 'info version'| nc -q 1 -w 1 localhost "${QEMU_MONPORT}" > /dev/null; then
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sleep 1
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echo "Shutting down, waiting... ($(cat ${_QEMU_SHUTDOWN_COUNTER})/${QEMU_POWERDOWN_TIMEOUT})"
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fi
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done
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echo && echo "Quitting..."
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echo 'quit' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}" > /dev/null || true
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return
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}
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_trap _graceful_shutdown SIGTERM SIGHUP SIGINT SIGABRT SIGQUIT
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MON_OPTS="-monitor telnet:localhost:${QEMU_MONPORT},server,nowait,nodelay"
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