Ertuğrul Erata
107 lines
3.0 KiB
Bash
107 lines
3.0 KiB
Bash
#!/bin/sh
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#
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# Written by Gabriel Burt <gburt@novell.com>
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# Copyright 2008 Novell, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of version 2 of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# Use rtcwake to wake the computer from sleep or hibernate
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# as configured in /etc/pm/config.d/rtcwake.config
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. "${PM_FUNCTIONS}"
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rtcwake_cmd="/usr/sbin/rtcwake";
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command_exists $rtcwake_cmd || exit $NA
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rtcwake_config_file="/etc/pm/config.d/rtcwake.conf"
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function start_of_day {
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echo `date -d "$1" "+%D"`
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}
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function since_epoch {
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echo `date -d "$1" "+%s"`
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}
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function day_of_week {
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echo `date -d "$1" "+%u"`
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}
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function isAlarmDow {
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is=0
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for dow in $RTCWAKE_DAYS; do
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if test "x$dow" = "x$1"; then
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is=1;
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break;
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fi
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done
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echo $is
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}
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function set_alarm
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{
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# If USER_RTCWAKE_ALLOWED is yes and the user passed in a num_seconds_to_sleep variable, then
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# we will respect it (and ignore the system config)
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# Do require that the number of seconds is at least 30 though.
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if test "x$USER_RTCWAKE_ALLOWED" != "xno" && test "x$NUM_SECONDS_TO_SLEEP" != "x" && test $(($NUM_SECONDS_TO_SLEEP > 30)) == 1; then
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echo "Have NUM_SECONDS_TO_SLEEP: $NUM_SECONDS_TO_SLEEP";
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# Actually set/configure the rtcwake
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sh -c "$rtcwake_cmd -m on -s $NUM_SECONDS_TO_SLEEP &"
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elif test "x$1" = "xyes"; then
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echo "alarm enabled, configuring rtcwake...";
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echo "RTCWAKE time: $RTCWAKE_TIME";
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echo "RTCWAKE days: $RTCWAKE_DAYS";
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next_alarm=0
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now=$(since_epoch now);
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# The next alarm has to be at most 7 days from now
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for days_from_now in 0 1 2 3 4 5 6 7; do
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# Get the date N days from now
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alarm_day=$(start_of_day "$days_from_now day");
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# Check that this day is an alarm-enabled day of the week
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alarm_dow=$(day_of_week $alarm_day);
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is_alarm_dow=$(isAlarmDow $alarm_dow);
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if test "x$is_alarm_dow" = "x1"; then
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# Get the actual alarm time on that day
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alarm_time=$(since_epoch "$alarm_day $RTCWAKE_TIME");
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# Ensure the alarm time is more than 15 minutes from now
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# - otherwise we set the alarm for the next slot
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# 900 seconds = 15 minutes * 60 seconds/minute
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is_enough_in_future=$(($alarm_time - $now > 900));
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if test "x$is_enough_in_future" = "x1"; then
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next_alarm=$alarm_time
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break;
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fi
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fi
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done
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if test "x$next_alarm" != "x0"; then
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# Recalculate now to be as accurate as possible
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now=$(since_epoch now);
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seconds_from_now=$(($next_alarm - $now));
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echo "Will set alarm for $seconds_from_now seconds from now, at $alarm_day $RTCWAKE_TIME ($next_alarm)"
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# Actually set/configure the rtcwake
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sh -c "$rtcwake_cmd -m on -s $seconds_from_now &"
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else
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echo "No acceptable time found to set the rtcwake alarm. Review your configuration in $rtcwake_config_file"
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exit $NA
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fi
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else
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echo "rtcwake alarm not enabled in $rtcwake_config_file, doing nothing...";
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exit $NA
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fi
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}
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case "$1" in
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suspend) set_alarm $SUSPEND_RTCWAKE_ENABLED ;;
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hibernate) set_alarm $HIBERNATE_RTCWAKE_ENABLED ;;
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*) exit $NA ;;
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esac
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