Add new utility and init script swclock that sets the system time based on

the mtime of a file. It saves the shutdown time to this file also.
This is handy for systems without a working RTC chip.
Based on an idea by Michael A. Smith <michael@smith-li.com>.
Fixes Gentoo #272073.

init.d/.gitignore

@@ -34,6 +34,7 @@ rc-enabled
 rpcbind
 savecore
 swap-blk
+swclock
 syslogd
 termencoding
 ttys

init.d/Makefile

@@ -1,6 +1,6 @@
 DIR=	${INITDIR}
 SRCS=	bootmisc.in fsck.in hostname.in local.in localmount.in netmount.in \
-	network.in root.in savecache.in swap.in sysctl.in urandom.in
+	network.in root.in savecache.in swap.in swclock.in sysctl.in urandom.in
 BIN=	${OBJS}
 
 # Build our old net foo or not

init.d/savecache.in

@@ -22,7 +22,7 @@ start()
 		fi
 	fi
 	local save=
-	for x in deptree depconfig softlevel nettree rc.log; do
+	for x in deptree depconfig shutdowntime softlevel nettree rc.log; do
 		[ -e "$RC_SVCDIR/$x" ] && save="$save $RC_SVCDIR/$x"
 	done
 	if [ -n "$save" ]; then

init.d/swclock.in

@@ -0,0 +1,27 @@
+#!@PREFIX@/sbin/runscript
+# Copyright (c) 2009 Roy Marples <roy@marples.name>
+# All rights reserved. Released under the 2-clause BSD license.
+
+description="Sets the local clock to the mtime of a given file."
+
+depend()
+{
+	before *
+	keyword -openvz -prefix -uml -vserver -xenu
+}
+
+# swclock is an OpenRC built in
+
+start()
+{
+	ebegin "Setting the local clock based on last shutdown time"
+	swclock
+	eend $?
+}
+
+stop()
+{
+	ebegin "Saving the shutdown time"
+	swclock --save
+	eend $?
+}