aboutsummaryrefslogtreecommitdiff
path: root/init.d/hwclock.in
blob: d3e19f1509aa702dfa048d26485109759a62a8d8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
#!@SBINDIR@/openrc-run
# Copyright (c) 2007-2015 The OpenRC Authors.
# See the Authors file at the top-level directory of this distribution and
# https://github.com/OpenRC/openrc/blob/master/AUTHORS
#
# This file is part of OpenRC. It is subject to the license terms in
# the LICENSE file found in the top-level directory of this
# distribution and at https://github.com/OpenRC/openrc/blob/master/LICENSE
# This file may not be copied, modified, propagated, or distributed
# except according to the terms contained in the LICENSE file.

extra_commands="save show"

description="Sets the local clock to UTC or Local Time."
description_save="Saves the current time in the BIOS."
description_show="Displays the current time in the BIOS."

: ${clock_adjfile:=${CLOCK_ADJFILE}}
: ${clock_args:=${CLOCK_OPTS}}
: ${clock_systohc:=${CLOCK_SYSTOHC}}
: ${clock:=${CLOCK:-UTC}}
if [ "$clock" = "UTC" ]; then
	utc="UTC"
	utc_cmd="--utc"
else
	utc="Local Time"
	utc_cmd="--localtime"
fi

depend()
{
	provide clock
	if yesno $clock_adjfile; then
		use root
	else
		before *
	fi
	keyword -openvz -prefix -systemd-nspawn -uml -vserver -xenu -lxc
}

setupopts()
{
	case "$(uname -m)" in
		s390*)
			utc="s390"
			;;
		*)
			if [ -e /proc/devices ] && \
				grep -q " cobd$" /proc/devices
			then
				utc="coLinux"
			fi
			;;
	esac

	case "$utc" in
		UTC|Local" "Time);;
		*) unset utc_cmd;;
	esac
}

# hwclock doesn't always return non zero on error
_hwclock()
{
	local err="$(hwclock "$@" 2>&1 >/dev/null)"

	[ -z "$err" ] && return 0
	echo "${err}" >&2
	return 1
}

start()
{
	local retval=0 errstr=""
	setupopts

	if [ -z "$utc_cmd" ]; then
		ewarn "Not setting clock for $utc system"
		return 0
	fi

	ebegin "Setting system clock using the hardware clock [$utc]"
	if [ -e /proc/modules ]; then
		local rtc=
		for rtc in /dev/rtc /dev/rtc[0-9]*; do
			[ -e "$rtc" ] && break
		done
		if [ ! -e "${rtc}" ]; then
			modprobe -q rtc-cmos || modprobe -q rtc || modprobe -q genrtc
		fi
	fi

	# Always set the kernel's time zone.
	_hwclock --systz $utc_cmd $clock_args
	: $(( retval += $? ))

	if [ -e /etc/adjtime ] && yesno $clock_adjfile; then
		_hwclock --adjust $utc_cmd
		: $(( retval += $? ))
	fi

	if yesno ${clock_hctosys:-YES}; then
		_hwclock --hctosys $utc_cmd $clock_args
		: $(( retval += $? ))
	fi

	eend $retval "Failed to set the system clock"

	return 0
}

stop()
{
	# Don't tweak the hardware clock on LiveCD halt.
	[ -n "$CDBOOT" ] && return 0
	yesno ${clock_systohc:-YES} || return 0

	local retval=0 errstr=""
	setupopts

	[ -z "$utc_cmd" ] && return 0

	ebegin "Setting hardware clock using the system clock" "[$utc]"

	if ! yesno $clock_adjfile; then
		# Some implementations don't handle adjustments
		if LC_ALL=C hwclock --help 2>&1 | grep -q "\-\-noadjfile"; then
			utc_cmd="$utc_cmd --noadjfile"
		fi
	fi

	_hwclock --systohc $utc_cmd $clock_args
	retval=$?

	eend $retval "Failed to sync clocks"
}

save()
{
	clock_systohc=yes
	stop
}

show()
{
	setupopts
	hwclock --show "$utc_cmd" $clock_args
}