50 lines
1.4 KiB
Bash
50 lines
1.4 KiB
Bash
#!/bin/sh
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#===============================================================================
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#
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# poweroff_safe
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#
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# Copyright (C) 2022 by Digi International Inc.
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 as published by
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# the Free Software Foundation.
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#
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#
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# !Description: safe power-off script
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#
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#===============================================================================
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scriptname="$(basename "$(readlink -f "${0}")")"
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pwroff_safe="$(find /sys/devices/ -name pwroff_safe 2>/dev/null)"
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# Default timeout 30s
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TOUT="30"
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UNLOCK_STR="CTRU"
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usage() {
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printf "\nInitiates a power-off on the system and programs the MCA"
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printf "\nto force an immediate power-off after a configured timeout."
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printf "\nThis assures the system will power off even if the"
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printf "\nsystem hangs during regular shut down process."
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printf "\nUsage: %s [OPTIONS]\n
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-t timeout value in seconds (30 seconds by default)
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-h Show this help
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\n" "${scriptname}"
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}
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while getopts "t:h" c; do
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case "${c}" in
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h) usage; exit;;
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t) TOUT=${OPTARG};;
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esac
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done
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if [ -f "${pwroff_safe}" ]; then
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# Configure the MCA to power off after ${TOUT} seconds
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echo "${UNLOCK_STR}${TOUT}" > "${pwroff_safe}"
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else
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printf "\nSafe power-off operation not supported. Proceeding with a regular power-off\n\n"
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exec poweroff
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fi
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