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Implemented API for guest communication

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This allows to send the shutdown command from the host to the guest
This commit is contained in:
Kroese
2023-04-11 20:29:09 +02:00
parent 5761ad9b44
commit 1a10105f93
3 changed files with 114 additions and 15 deletions
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37
power.sh
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@@ -4,7 +4,7 @@ set -eu
# Configure QEMU for graceful shutdown
QEMU_MONPORT=7100
QEMU_POWERDOWN_TIMEOUT=30
QEMU_POWERDOWN_TIMEOUT=50
_QEMU_PID=/run/qemu.pid
_QEMU_SHUTDOWN_COUNTER=/run/qemu.counter
@@ -22,22 +22,31 @@ _graceful_shutdown(){
local QEMU_POWERDOWN_TIMEOUT="${QEMU_POWERDOWN_TIMEOUT:-120}"
set +e
echo "Received $1 signal.."
echo "Received $1 signal, shutting down..."
echo 0 > "${_QEMU_SHUTDOWN_COUNTER}"
FILE="${IMG}/agent.ver"
[ ! -f "$FILE" ] && echo "1" > "$FILE"
AGENT_VERSION=$(cat "${FILE}")
# Don't send the powerdown signal because Synology ignores it
# Don't send the powerdown signal because vDSM ignores ACPI signals
# echo 'system_powerdown' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}">/dev/null
if ((AGENT_VERSION < 2)); then
echo "Please update the agent to allow gracefull shutdowns..."
pkill -f qemu-system-x86_64
else
# Send a NMI interrupt which will be detected by the agent
echo 'nmi' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}">/dev/null
# Send shutdown command to guest agent tools instead via serial port
RESPONSE=$(curl -s -m 2 -S http://127.0.0.1:2210/write?command=6 2>&1)
if [[ ! "${RESPONSE}" =~ "\"success\"" ]] ; then
echo "Could not send shutdown command to guest, error: $RESPONSE"
FILE="${IMG}/agent.ver"
[ ! -f "$FILE" ] && echo "1" > "$FILE"
AGENT_VERSION=$(cat "${FILE}")
if ((AGENT_VERSION < 2)); then
echo "Please update the agent to allow gracefull shutdowns..."
pkill -f qemu-system-x86_64
else
# Send a NMI interrupt which will be detected by the kernel
echo 'nmi' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}">/dev/null
fi
fi
while [ "$(cat ${_QEMU_SHUTDOWN_COUNTER})" -lt "${QEMU_POWERDOWN_TIMEOUT}" ]; do
@@ -54,7 +63,7 @@ _graceful_shutdown(){
fi
done
echo "Killing VM.."
echo "Quitting..."
echo 'quit' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}">/dev/null || true
return