#!/usr/bin/ksh

#

# CDDL HEADER START

#

# The contents of this file are subject to the terms of the

# Common Development and Distribution License (the "License").

# You may not use this file except in compliance with the License.

#

# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

# or http://www.opensolaris.org/os/licensing.

# See the License for the specific language governing permissions

# and limitations under the License.

#

# When distributing Covered Code, include this CDDL HEADER in each

# file and include the License file at usr/src/OPENSOLARIS.LICENSE.

# If applicable, add the following below this CDDL HEADER, with the

# fields enclosed by brackets "[]" replaced with your own identifying

# information: Portions Copyright [yyyy] [name of copyright owner]

#

# CDDL HEADER END

#

# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.

# Use is subject to license terms.

#

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# Main

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# Strip a full x86/amd64 root archive into the machine-specific portion.

# 

# Args:

#   MASTER_DIR: Area already populated with complete root contents

#

#   BR_BUILD: Area where machine-specific archive is put together.

#

#   KERNEL_ARCH: Architecture for which this image should be configured

#

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# Verify argument count

if [ $# != 3 ] ; then

	print -u2 "$0: Requires 3 args: master root image, bootroot build area, kernel architecture"

	exit 1

fi

MASTER_DIR=$1

BR_BUILD=$2

KERNEL_ARCH=$3

# Define a few commands.

CD=cd		# Built into the shell

CPIO=/usr/bin/cpio

FIND=/usr/bin/find

GREP=/usr/xpg4/bin/grep

MKDIR=/usr/bin/mkdir

RM=/usr/bin/rm

XARGS=/usr/bin/xargs

if [ ! -d ${BR_BUILD} ] ; then

	${MKDIR} ${BR_BUILD}

fi

# Start by duplicating entire master tree into build tree

print "Duplicating ${MASTER_DIR} to ${BR_BUILD}"

${CD} ${MASTER_DIR}

${FIND} . | ${CPIO} -pmud ${BR_BUILD}

${CD} ${BR_BUILD}

# Basic idea here is that an x86 arch means we remove anything that's amd64

# from /kernel, /platform, and /lib.  Conversely, on amd64, we remove anything

# from /kernel and /platform that's not a .conf file or in an amd64 directory

if [ ${KERNEL_ARCH} == "x86" ]; then

	print "Stripping amd64 components"

	${FIND} kernel platform lib -name amd64 | ${XARGS} ${RM} -rf 

elif [ ${KERNEL_ARCH} == "amd64" ]; then

	print "Stripping i386 components"

	${FIND} kernel platform -type f -print | ${GREP} -v conf$ | 

	    ${GREP} -v /amd64/ | ${XARGS} ${RM} -f

else

	print -u2 "$0: ${KERNEL_ARCH} is not a supported architecture"

	exit 1

fi

exit 0