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58 lines
1.7 KiB
Bash
58 lines
1.7 KiB
Bash
#!/bin/sh
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### BEGIN INIT INFO
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# Provides: hwclock
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# Required-Start:
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# Required-Stop: mountdevsubfs
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# Should-Stop: umountfs
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# Default-Start: S
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# Default-Stop: 0 6
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# Short-Description: Save system clock to hardware on shutdown.
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### END INIT INFO
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# Note: this init script and related code is only useful if you
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# run a sysvinit system, without NTP synchronization.
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if [ -e /run/systemd/system ] ; then
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exit 0
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fi
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unset TZ
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hwclocksh()
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{
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HCTOSYS_DEVICE=rtc0
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[ ! -x /sbin/hwclock ] && return 0
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[ ! -r /etc/default/rcS ] || . /etc/default/rcS
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[ ! -r /etc/default/hwclock ] || . /etc/default/hwclock
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. /lib/lsb/init-functions
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verbose_log_action_msg() { [ "$VERBOSE" = no ] || log_action_msg "$@"; }
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case "$1" in
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start)
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# start is handled by /usr/lib/udev/rules.d/85-hwclock.rules.
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return 0
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;;
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stop|restart|reload|force-reload)
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# Updates the Hardware Clock with the System Clock time.
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# This will *override* any changes made to the Hardware Clock,
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# for example by the Linux kernel when NTP is in use.
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log_action_msg "Saving the system clock to /dev/$HCTOSYS_DEVICE"
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if /sbin/hwclock --rtc=/dev/$HCTOSYS_DEVICE --systohc; then
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verbose_log_action_msg "Hardware Clock updated to `date`"
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fi
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;;
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show)
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/sbin/hwclock --rtc=/dev/$HCTOSYS_DEVICE --show
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;;
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*)
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log_success_msg "Usage: hwclock.sh {stop|reload|force-reload|show}"
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log_success_msg " stop and reload set hardware (RTC) clock from kernel (system) clock"
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return 1
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;;
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esac
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}
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hwclocksh "$@"
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