#
#ident	"@(#)preinstall	1.2	93/04/12 SMI"
#
# Copyright (c) 1993 by Sun Microsystems, Inc.
#
#	Patch $PATID with version $PATVER or greater is required
#	to support this patch and must be installated prior to
#	installation of this patch.  This preinstall script enforces
#	this requirement.
#
PATID=101945
PATVER=05

#
#	There may be multiple SUNWcar packages installed (SUNWcar, SUNWcar.1,
#	and so on).  We must inspect each of them.
#
INFO="$BASEDIR/var/sadm/pkg/SUNW*/pkginfo"

complain(){
	echo "This patch may not be installed without first installing"
	echo "version $PATVER or greater of patch $PATID."
}

#	Look for the patch ID in either SUNW_PATCHID or
#	SUNW_OBSOLETES (one at a time since they have
#	different content).
#
if egrep -s "SUNW_PATCHID.*$PATID" $INFO
then
	#
	#	Some version of the patch we depend on has
	#	been installed.  Extract the patch version
	#	number and see whether it's large enough.
	#
	for patch in `egrep "SUNW_PATCHID.*$PATID" $INFO |
		cut -d= -f2 | sort -u`
	do
		ver=`echo $patch | sed -e "s/.*$PATID-\([0-9]*\).*/\1/"`
		if [ $ver -ge $PATVER ]
		then
			exit 0
		fi
	done
	#
	#	Installed version of the patch is too small
	#	to contain
	#
	complain
	exit 1
else
	#
	#	The patch version number is not guaranteed to
	#	be present in the SUNW_OBSOLETES entry.  Look
	#	only for the patch ID itself.
	#
	if egrep -s "SUNW_OBSOLETES.*$PATID" $INFO
	then
		#
		#	Patch has been obsoleted.  Its changes,
		#	including the one we care about, must
		#	have been subsumed in the new patch.
		#
		exit 0
	else
		#
		#	No patch obsoleting the one we depend
		#	on has been installed.
		#
		complain
		exit 1
	fi
fi
exit 0
