From 848a66d6b8a4fc51b218e80e1c71fe06e85f56ee Mon Sep 17 00:00:00 2001
From: LaMont Jones <lamont@debian.org>
Date: Fri, 21 Sep 2007 14:01:04 -0600
Subject: [PATCH] hwclock: Reintroduce hwclockfirst.sh on Debian machines. 
 Closes: #443487

If /etc/localtime is a readable file, then set the time in hwclockfirst.sh
before mounting the root partition.  Many thanks to Ted T'so for the details
(found in the bug report.)
---
 debian/hwclock.sh          | 64 ++++++++++++++++++++++++--------------
 debian/rules               |  7 ++++-
 debian/util-linux.postinst |  3 ++
 3 files changed, 49 insertions(+), 25 deletions(-)

diff --git a/debian/hwclock.sh b/debian/hwclock.sh
index 69f45f94..241ec027 100644
--- a/debian/hwclock.sh
+++ b/debian/hwclock.sh
@@ -12,7 +12,7 @@
 #		 - Added comments to alert users of hwclock issues
 #		   and discourage tampering without proper doc reading.
 
-# WARNING:	Please read /usr/share/doc/util-linux/README.Debian.hwclock.gz
+# WARNING:	Please read /usr/share/doc/util-linux/README.Debian.hwclock
 #		or /usr/share/doc/util-linux/README.Debian.hwclock
 #		before changing this file. You risk serious clock
 #		misbehaviour otherwise.
@@ -25,6 +25,8 @@
 # Default-Stop:      0 6
 ### END INIT INFO
 
+FIRST=no	# debian/rules sets this to 'yes' when creating hwclockfirst.sh
+
 # Set this to any options you might need to give to hwclock, such
 # as machine hardware clock type for Alphas.
 HWCLOCKPARS=
@@ -41,6 +43,12 @@ hwclocksh()
     case "$UTC" in
        no|"")	GMT="--localtime"
 		UTC=""
+		if [ "X$FIRST" = "Xyes" ] && [ ! -r /etc/localtime ]; then
+		    if [ -z "$TZ" ]; then
+			log_action_msg "System clock was not updated at this time"
+			return 1
+		    fi
+		fi
 		;;
        yes)	GMT="--utc"
 		UTC="--utc"
@@ -56,32 +64,40 @@ hwclocksh()
 
     case "$1" in
 	start)
-	    if [ ! -f /etc/adjtime ] && [ ! -e /etc/adjtime ]; then
+	    if [ -w /etc ] && [ ! -f /etc/adjtime ] && [ ! -e /etc/adjtime ]; then
 		echo "0.0 0 0.0" > /etc/adjtime
 	    fi
 
-	    # Uncomment the hwclock --adjust line below if you want
-	    # hwclock to try to correct systematic drift errors in the
-	    # Hardware Clock.
-	    #
-	    # WARNING: If you uncomment this option, you must either make
-	    # sure *nothing* changes the Hardware Clock other than
-	    # hwclock --systohc, or you must delete /etc/adjtime
-	    # every time someone else modifies the Hardware Clock.
-	    #
-	    # Common "vilains" are: ntp, MS Windows, the BIOS Setup
-	    # program.
-	    #
-	    # WARNING: You must remember to invalidate (delete)
-	    # /etc/adjtime if you ever need to set the system clock
-	    # to a very different value and hwclock --adjust is being
-	    # used.
-	    #
-	    # Please read /usr/share/doc/util-linux/README.Debian.hwclock.gz
-	    # before enablig hwclock --adjust.
+	    if [ ! -w /etc/adjtime ]; then
+		NOADJ="--noadjfile"
+	    else
+	    	NOADJ=""
+	    fi
 
-	    #hwclock --adjust $GMT $BADYEAR
-	    :
+	    if [ "$FIRST" != yes ]; then
+		# Uncomment the hwclock --adjust line below if you want
+		# hwclock to try to correct systematic drift errors in the
+		# Hardware Clock.
+		#
+		# WARNING: If you uncomment this option, you must either make
+		# sure *nothing* changes the Hardware Clock other than
+		# hwclock --systohc, or you must delete /etc/adjtime
+		# every time someone else modifies the Hardware Clock.
+		#
+		# Common "vilains" are: ntp, MS Windows, the BIOS Setup
+		# program.
+		#
+		# WARNING: You must remember to invalidate (delete)
+		# /etc/adjtime if you ever need to set the system clock
+		# to a very different value and hwclock --adjust is being
+		# used.
+		#
+		# Please read /usr/share/doc/util-linux/README.Debian.hwclock
+		# before enablig hwclock --adjust.
+
+		#hwclock --adjust $GMT $BADYEAR
+		:
+	    fi
 
 	    if [ "$HWCLOCKACCESS" != no ]; then
 		log_action_msg "Setting the system clock."
@@ -89,7 +105,7 @@ hwclocksh()
 		# Copies Hardware Clock time to System Clock using the correct
 		# timezone for hardware clocks in local time, and sets kernel
 		# timezone. DO NOT REMOVE.
-		/sbin/hwclock --hctosys $GMT $HWCLOCKPARS $BADYEAR
+		/sbin/hwclock --hctosys $GMT $HWCLOCKPARS $BADYEAR $NOADJ
 
 		#	Announce the local time.
 		verbose_log_action_msg "System Clock set to: `date $UTC`"
diff --git a/debian/rules b/debian/rules
index c542fc54..a18a1663 100755
--- a/debian/rules
+++ b/debian/rules
@@ -101,7 +101,12 @@ endif
 	if [ -f debian/util-linux/sbin/hwclock ] ; then \
 	    install -m 755 debian/hwclock.sh debian/util-linux/etc/init.d/hwclock.sh; \
 	fi
-ifneq ($(DISTRO),Debian)
+ifeq ($(DISTRO),Debian)
+	if [ -f debian/util-linux/sbin/hwclock ] ; then \
+	    install -m 755 debian/hwclock.sh debian/util-linux/etc/init.d/hwclockfirst.sh; \
+	    sed -i '/^FIRST=/s/no/yes/' debian/util-linux/etc/init.d/hwclockfirst.sh; \
+	fi
+else
 	if [ -f debian/util-linux/sbin/hwclock ] ; then \
 	    install -m 755 debian/hwclock.udev debian/util-linux/lib/udev/set_hwclock && \
 	    install -m 644 debian/hwclock.rules debian/util-linux/etc/udev/rules.d/85-hwclock.rules; \
diff --git a/debian/util-linux.postinst b/debian/util-linux.postinst
index 7886e9ae..c12421e3 100644
--- a/debian/util-linux.postinst
+++ b/debian/util-linux.postinst
@@ -28,6 +28,9 @@ if [ "$(uname -s)" = "Linux" ]; then
         update-rc.d -f hwclock.sh remove 2>/dev/null > /dev/null
         update-rc.d hwclock.sh start 11 S . stop 25 0 6 . > /dev/null
         update-rc.d -f hwclockfirst.sh remove 2>/dev/null > /dev/null
+	if [ -f /etc/init.d/hwclockfirst.sh ]; then
+	  update-rc.d hwclockfirst.sh start 8 S . > /dev/null
+	fi
     fi
 fi
 
-- 
2.39.5