[PATCH v3 2/2] tzdata: Simplify code removing not used cases

[Otavio Salvador <otavio@ossystems.com.br>]

We shouldn't have an use-case where we'd use 'FUBAR' timezone so
instead of adding postinst handling for this use case we handle it at
install time and keep the Universal as fallback if user did something
wrong.

This also ensure the /etc/localtime file is kept as a symbolic link.
This will make timezone not available when /usr is in separated
partition (and not mounted) however the applications ought to fallback
to GMT timezone in this case and when /usr is made availble timezone
will work fine.

Change-Id: I9a4f05db7a0bdc06511deb5693d1d16569d2fc63
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
---
 meta/recipes-extended/tzdata/tzdata_2012d.bb |   36 ++++++-------------------
 1 files changed, 9 insertions(+), 27 deletions(-)

diff --git a/meta/recipes-extended/tzdata/tzdata_2012d.bb b/meta/recipes-extended/tzdata/tzdata_2012d.bb
index 9ec6715..4811072 100644
--- a/meta/recipes-extended/tzdata/tzdata_2012d.bb
+++ b/meta/recipes-extended/tzdata/tzdata_2012d.bb
@@ -47,48 +47,30 @@ do_install () {
         cp -pP "${S}/iso3166.tab" ${D}${datadir}/zoneinfo
 
         # Install default timezone
-        install -d ${D}${sysconfdir}
-        echo ${DEFAULT_TIMEZONE} > ${D}${sysconfdir}/timezone
-        ln -s ${datadir}/zoneinfo/${DEFAULT_TIMEZONE} ${D}${sysconfdir}/localtime
+        if [ -e ${D}${datadir}/zoneinfo/${DEFAULT_TIMEZONE} ]; then
+            install -d ${D}${sysconfdir}
+            echo ${DEFAULT_TIMEZONE} > ${D}${sysconfdir}/timezone
+            ln -s ${datadir}/zoneinfo/${DEFAULT_TIMEZONE} ${D}${sysconfdir}/localtime
+        else
+            bberror "DEFAULT_TIMEZONE is set to an invalid value."
+            exit 1
+        fi
 
         chown -R root:root ${D}
 }
 
 pkg_postinst_${PN} () {
-
-# code taken from Gentoo's tzdata ebuild
-
 	etc_lt="$D${sysconfdir}/localtime"
 	src="$D${sysconfdir}/timezone"
 
 	if [ -e ${src} ] ; then
 		tz=$(sed -e 's:#.*::' -e 's:[[:space:]]*::g' -e '/^$/d' "${src}")
-	else
-		tz="FUBAR"
 	fi
 	
 	if [ -z ${tz} ] ; then
 		return 0
 	fi
 	
-	if [ ${tz} = "FUBAR" ] ; then
-		echo "You do not have TIMEZONE set in ${src}."
-
-		if [ ! -e ${etc_lt} ] ; then
-			# if /etc/localtime is a symlink somewhere, assume they
-			# know what they're doing and they're managing it themselves
-			if [ ! -L ${etc_lt} ] ; then
-				cp -f "$D${datadir}/zoneinfo/Universal" "${etc_lt}"
-				echo "Setting ${etc_lt} to Universal."
-			else
-				echo "Assuming your ${etc_lt} symlink is what you want; skipping update."
-			fi
-		else
-			echo "Skipping auto-update of ${etc_lt}."
-		fi
-		return 0
-	fi
-
 	if [ ! -e "$D${datadir}/zoneinfo/${tz}" ] ; then
 		echo "You have an invalid TIMEZONE setting in ${src}"
 		echo "Your ${etc_lt} has been reset to Universal; enjoy!"
@@ -97,7 +79,7 @@ pkg_postinst_${PN} () {
 		if [ -L ${etc_lt} ] ; then
 			rm -f "${etc_lt}"
 		fi
-		cp -f "$D${datadir}/zoneinfo/${tz}" "${etc_lt}"
+		ln -s "${datadir}/zoneinfo/${tz}" "${etc_lt}"
 	fi
 }
 
-- 
1.7.2.5