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      1 #!/bin/sh
      2 #
      3 # CDDL HEADER START
      4 #
      5 # The contents of this file are subject to the terms of the
      6 # Common Development and Distribution License (the "License").
      7 # You may not use this file except in compliance with the License.
      8 #
      9 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10 # or http://www.opensolaris.org/os/licensing.
     11 # See the License for the specific language governing permissions
     12 # and limitations under the License.
     13 #
     14 # When distributing Covered Code, include this CDDL HEADER in each
     15 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16 # If applicable, add the following below this CDDL HEADER, with the
     17 # fields enclosed by brackets "[]" replaced with your own identifying
     18 # information: Portions Copyright [yyyy] [name of copyright owner]
     19 #
     20 # CDDL HEADER END
     21 #
     22 #
     23 # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24 # Use is subject to license terms.
     25 #
     26 
     27 PATH="/usr/bin:/usr/sbin:${PATH}"
     28 export PATH
     29 
     30 while read src dest
     31 do
     32 	if [ ! -f $dest ] ; then
     33 		cp $src $dest
     34 	else
     35 		# Carry on the CDDL header and comments stuff in $src
     36 		egrep '^#' $src > /tmp/i.$$
     37 
     38 		SRC_DEVS=`awk '/^\/dev/ { print $1 }' $src`
     39 		for src_dev in $SRC_DEVS; do
     40 			#
     41 			# If $dest contains an entry that has the same device
     42 			# as $src_dev, copy the entry in $dest.
     43 			# Otherwise, copy the new one in $src.
     44 			# This loop maintains the device order in $src.
     45 			#
     46 
     47 			file=$src
     48 			egrep "^$src_dev" $dest > /dev/null &&
     49 			    file=$dest
     50 
     51 			egrep "^$src_dev" $file >> /tmp/i.$$
     52 		done
     53 
     54 		DEST_DEVS=`awk '/^\/dev/ { print $1 }' $dest`
     55 		for dest_dev in $DEST_DEVS; do
     56 			#
     57 			# For entries that are not found in $src,
     58 			# append them to the target file.
     59 			#
     60 			egrep "^$dest_dev" /tmp/i.$$ > /dev/null ||
     61 			     egrep "^$dest_dev" $dest >> /tmp/i.$$
     62 		done	 
     63 
     64 		mv /tmp/i.$$ $dest
     65 	fi
     66 done
     67 
     68 exit 0
     69