Michael Walle
c09ee07b2c
Add a new initscript to save the date and time to the hardware clock on shutdown. Signed-off-by: Michael Walle <michael@walle.cc> [Arnout: - package as hwclock-initscript instead of buildroot-initscripts; - mention in help text that it isn't needed at boot; - rewrite initscript according to our usual pattern; - fix shellcheck errors. ] Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>
40 lines
605 B
Bash
40 lines
605 B
Bash
#! /bin/sh
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#
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# hwclock This writes the system time to the RTC on shutdown
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#
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RTC_DEVICE=rtc0
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DAEMON=hwclock
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# shellcheck source=/dev/null
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[ -r "/etc/default/$DAEMON" ] && . "/etc/default/$DAEMON"
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# Quietly do nothing if /dev/rtc0 does not exist
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[ -c /dev/$RTC_DEVICE ] || exit 0
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start(){
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: # Nothing to do on startup
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}
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stop(){
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printf "Saving the system clock to /dev/%s\n" "${RTC_DEVICE}"
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/sbin/$DAEMON -f "/dev/${RTC_DEVICE}" -w
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}
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case "$1" in
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start)
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start
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;;
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stop)
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stop
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;;
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restart|reload)
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stop
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start
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;;
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*)
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echo "Usage: $0 {start|stop|restart|reload}"
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exit 1
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;;
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esac
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