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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 #ident	"%Z%%M%	%I%	%E% SMI"
     24 #
     25 # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     26 # Use is subject to license terms.
     27 #
     28 
     29 PATH="/usr/bin:/usr/sbin:${PATH}"
     30 export PATH
     31 
     32 while read src dest
     33 do
     34 	if [ ! -f $dest ] ; then
     35 		cp $src $dest
     36 	else
     37 		# This updates the header information.  Note that there's a
     38 		# long-standing bug that was introduced by the fix for CR
     39 		# 1094626.  All systems that have been upgraded at least once
     40 		# since 1993 are missing the "nobody" entry.  There's no good
     41 		# way to know, though, whether a missing entry is due to that
     42 		# bug or due to intentional configuration, so we don't
     43 		# correct it here.  We just don't make it worse.
     44 		#
     45 		# From the source file, take everything before the "nobody"
     46 		# line.  If there's no "nobody" line, take the whole thing.
     47 		# From the destination, take everything after the initial
     48 		# comment block.  The "netname" comment is the end of the
     49 		# traditional comment block, so start after there if present
     50 		# (keeping the user's added comments, if any), or with the
     51 		# first non-comment line.
     52 		tmpfile=/tmp/policyconf.$$
     53 		(
     54 			cat $src
     55 			echo SWITCH
     56 			cat $dest
     57 		) | nawk '
     58 			/^nobody / && state == 0 { state=1 }
     59 			/^SWITCH$/ { state=2; next }
     60 			/^[^#]/ && state == 2 { state=3 }
     61 			/^# netname	/ && state == 2 { state=3; next }
     62 			state == 0 || state == 3 { print $0 }
     63 		' > $tmpfile
     64 		cmp -s $tmpfile $dest || cp $tmpfile $dest
     65 		rm -f $tmpfile
     66 	fi
     67 done
     68 
     69 exit 0
     70