#!/bin/sh

# Slackware SlackBuild script
# ===========================
# By:        Thales A. Tsailas <ttsailas@enforcingit.com>
# For:       iSCSI target
# Descr:     Provides an open source professional iSCSI target solution for Linux
# URL:       http://iscsitarget.sourceforge.net/
#
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM=iscsitarget
VERSION=0.4.17
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

KERNEL=${KERNEL:-$(uname -r)}

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  SRCARCH=x86	# Needed for the kernel module building
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  SRCARCH=x86	# Needed for the kernel module building
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  SRCARCH=x86	# Needed for the kernel module building
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $TMP/$PRGNAM-$VERSION
chown -R root:root .
chmod -R a-s,u+w,go+r-w .

# Patch the source to fix compiling issue with 2.6.29 kernels 
patch -p0 < $CWD/iscsitarget-0.4.17-2.6.29.patch

# Allow use of our SLKCFLAGS for the non-kernel parts
patch -p1 < $CWD/iscsitarget-0.4.17-add_OPTS_cflags.patch

make \
  OPTS="$SLKCFLAGS" \
  MANDIR=/usr/man \
  DOCDIR=/usr/doc/$PRGNAM-$VERSION \
  KSRC=/lib/modules/$KERNEL/build \
  SRCARCH=$SRCARCH
make install \
  MANDIR=/usr/man \
  DOCDIR=/usr/doc/$PRGNAM-$VERSION \
  KSRC=/lib/modules/$KERNEL/build \
  DISTDIR=$PKG

# Rename init script and don't clobber existing config files on upgrade
mv $PKG/etc/rc.d/iscsi-target $PKG/etc/rc.d/rc.iscsi-target.new
mv $PKG/etc/initiators.deny $PKG/etc/initiators.deny.new
mv $PKG/etc/initiators.allow $PKG/etc/initiators.allow.new
mv $PKG/etc/ietd.conf $PKG/etc/ietd.conf.new

# Add the build script to the docs
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# Remove some cruft that shouldn't be in the package 
rm -f $PKG/lib/modules/$KERNEL/modules*

( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | \
    xargs strip --strip-unneeded 2> /dev/null || true
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | \
    xargs strip --strip-unneeded 2> /dev/null
)

( cd $PKG/usr/man || exit 1
  find . -type f -exec gzip -9 {} \;
  for i in $(find . -type l) ; do ln -s $(readlink $i).gz $i.gz ; rm $i ; done
)

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
sed "s%@KERNEL@%$KERNEL%" $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}