Change the sanity check on save to use the release date

[fake-hwclock.git] / fake-hwclock

diff --git a/fake-hwclock b/fake-hwclock
index 5c34775..a8e72fa 100755 (executable)
--- a/fake-hwclock
+++ b/fake-hwclock
@@ -6,7 +6,7 @@
 # NTP is still recommended on these machines to get to real time sync
 # once more of the system is up and running.
 #
-# Copyright 2012 Steve McIntyre <93sam@debian.org>
+# Copyright 2012-2016 Steve McIntyre <93sam@debian.org>
 #
 # License: GPLv2, see COPYING
 
@@ -14,6 +14,11 @@ if [ "$FILE"x = ""x ] ; then
     FILE=/etc/fake-hwclock.data
 fi
 
+# Midnight on the day of this release, used as a sanity check when
+# saving
+HWCLOCK_EPOCH="2016-04-15 00:00:00"
+HWCLOCK_EPOCH_SEC="1460678400"
+
 COMMAND=$1
 if [ "$COMMAND"x = ""x ] ; then
     COMMAND="save"
@@ -27,15 +32,14 @@ fi
 case $COMMAND in
     save)
         if [ -e $FILE ] ; then
-            SAVED="$(cat $FILE)"
-            SAVED_SEC=$(date -u -d "$SAVED" '+%s')
             NOW_SEC=$(date -u '+%s')
-            if $FORCE || [ $NOW_SEC -ge $SAVED_SEC ] ; then
+            if $FORCE || [ $NOW_SEC -ge $HWCLOCK_EPOCH_SEC ] ; then
                 date -u '+%Y-%m-%d %H:%M:%S' > $FILE
             else
+               echo "Time travel detected!"
+                echo "fake-hwclock release date is in the future: $HWCLOCK_EPOCH"
                 echo "Current system time: $(date -u '+%Y-%m-%d %H:%M:%S')"
-                echo "fake-hwclock saved clock information is in the future: $SAVED"
-                echo "To force the saved system clock backwards anyway, use \"force\""
+                echo "To force the saved system clock backwards in time anyway, use \"force\""
             fi
         else
             date -u '+%Y-%m-%d %H:%M:%S' > $FILE