initscripts: save /etc/timestamp with seconds accuracy

Currently, /etc/timestamp is saved with minutes accuracy.  To increase
the accuracy, modify the save-rtc.sh and bootmisc.sh scripts to save and
read /etc/timestamp respectively with seconds accuracy.

(From OE-Core rev: 8fed53e4e72230c61f23cb36eda36c228aede1e0)

Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 4 insertions, 3 deletions

diff --git a/meta/recipes-core/initscripts/initscripts-1.0/bootmisc.sh b/meta/recipes-core/initscripts/initscripts-1.0/bootmisc.sh
index 5211824ade..ccc7f9f1f4 100755
--- a/meta/recipes-core/initscripts/initscripts-1.0/bootmisc.sh
+++ b/meta/recipes-core/initscripts/initscripts-1.0/bootmisc.sh
@@ -66,10 +66,11 @@ fi
 test -x /etc/init.d/hwclock.sh && /etc/init.d/hwclock.sh start
 if test -e /etc/timestamp
 then
-        SYSTEMDATE=`date -u +%4Y%2m%2d%2H%2M`
+        SYSTEMDATE=`date -u +%4Y%2m%2d%2H%2M%2S`
         read TIMESTAMP < /etc/timestamp
         if [ ${TIMESTAMP} -gt $SYSTEMDATE ]; then
-                date -u ${TIMESTAMP#????}${TIMESTAMP%????????}
+                # format the timestamp as date expects it (2m2d2H2M4Y.2S)
+                date -u ${TIMESTAMP:4:8}${TIMESTAMP:0:4}.${TIMESTAMP:(-2)}
                 test -x /etc/init.d/hwclock.sh && /etc/init.d/hwclock.sh stop
         fi
 fi
diff --git a/meta/recipes-core/initscripts/initscripts-1.0/save-rtc.sh b/meta/recipes-core/initscripts/initscripts-1.0/save-rtc.sh
index 1f804e2374..b038fc59d4 100644
--- a/meta/recipes-core/initscripts/initscripts-1.0/save-rtc.sh
+++ b/meta/recipes-core/initscripts/initscripts-1.0/save-rtc.sh
@@ -10,4 +10,4 @@
 ### END INIT INFO
 
 # Update the timestamp
-date -u +%4Y%2m%2d%2H%2M > /etc/timestamp
+date -u +%4Y%2m%2d%2H%2M%2S > /etc/timestamp