64 lines
2.0 KiB
Bash
64 lines
2.0 KiB
Bash
#!/bin/sh
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#===============================================================================
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#
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# standby-actions
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#
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# Copyright (C) 2019 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: manage interfaces before suspending and after resuming from
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# suspend
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#
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#===============================================================================
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if [ "${1}" == "pre" ]; then
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# Stop NetworkManager before suspend
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systemctl stop NetworkManager
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# Suspend wireless interfaces
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if [ -d "/proc/device-tree/wireless" ]; then
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for i in $(sed -ne 's,^\(wlan[0-9]\)=.*,\1,g;T;p' /var/run/ifstate | sort -r); do
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ifdown "${i}" && RESUME_IFACES="${RESUME_IFACES:+${RESUME_IFACES} }${i}"
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done
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echo ${RESUME_IFACES} > /tmp/suspend_wlan_ifaces
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grep -qs '^wlan' /proc/modules && rmmod wlan
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fi
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# Suspend bluetooth interface
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if [ -d "/proc/device-tree/bluetooth" ]; then
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hciconfig hci0 2>&1 | grep -qs UP && touch /tmp/up_bt_on_resume
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systemctl stop bluetooth
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systemctl stop bluetooth-init
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fi
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elif [ "${1}" == "post" ]; then
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# Resume wireless interfaces
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if [ -d "/proc/device-tree/wireless" ]; then
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# Trigger wireless module loading event, and wait until the interface exists
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udevadm trigger --action=add --attr-match="modalias=pci:v0000168Cd0000003Esv*sd*bc*sc*i*"
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timeout -t 5 sh -c "while [ ! -d /sys/class/net/wlan0 ]; do sleep .2; done" 2>/dev/null
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# Bring up the interfaces that were brought down on suspend
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for i in $(cat /tmp/suspend_wlan_ifaces | tr ' ' '\n' | sort); do
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grep -qs "^${i}" /var/run/ifstate || ifup "${i}"
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done
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rm -f /tmp/suspend_wlan_ifaces
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fi
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# Resume NetworkManager after suspend
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systemctl start NetworkManager
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# Resume bluetooth interface
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if [ -d "/proc/device-tree/bluetooth" ]; then
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if [ -e "/tmp/up_bt_on_resume" ]; then
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systemctl start bluetooth
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rm -f /tmp/up_bt_on_resume
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fi
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fi
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fi
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