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#!/bin/sh
# Copyright 2019, 2023 Patrick J. Volkerding, Sebeka, Minnesota, USA
# 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.
cd $(dirname $0) ; CWD=$(pwd)
# This script repacks initrd.gz and usbboot.img from an existing tree in
# $TMP/build-slackware-installer/package-slackware-installer/*-installer-filesystem
# to allow making some changes to the installer files and then testing them.
INSTALLERVERSION=${INSTALLERVERSION:-"15.0"}
EFIBOOT=${EFIBOOT:-1}
TMP=${TMP:-/tmp}
# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
case "$(uname -m)" in
i?86) ARCH=i686
SLACKROOT=${SLACKROOT:-/root/slackware-current}
OUTPUT=${OUTPUT:-$TMP/output-ia32-$(basename $(uname -r))}
;;
x86_64) ARCH=x86_64
SLACKROOT=${SLACKROOT:-/root/slackware64-current}
OUTPUT=${OUTPUT:-$TMP/output-x86_64-$(uname -r)}
;;
arm*) readelf /usr/bin/file -A | grep -E -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl
SLACKROOT=${SLACKROOT:-/root/slackware-current}
OUTPUT=${OUTPUT:-$TMP/output-arm-$(uname -r)}
;;
# Unless $ARCH is already set, use uname -m for all other archs:
*) ARCH=$(uname -m)
SLACKROOT=${SLACKROOT:-/root/slackware-current}
OUTPUT=${OUTPUT:-$TMP/output-$(uname -m)-$(uname -r)}
;;
esac
export ARCH
fi
NUMJOBS=${NUMJOBS:-" -j7 "}
mkdir -p $OUTPUT
( cd $TMP/build-slackware-installer/package-slackware-installer/*-installer-filesystem
# CREATE INITRD.GZ:
# Determine the size of the installer:
echo " Installer size (uncompressed): $( du -sh . )"
find . | cpio -o -H newc | xz -9fv -C crc32 > $OUTPUT/initrd.img
echo " New installer image is ${OUTPUT}/initrd.img"
# CREATE USBBOOT.IMG:
# Like initrd.img, the usbboot.img will be created in the current directory
echo "--- Creating an image for the USB boot disk ---"
# Calculate sizes:
let USBIMG=$( LC_ALL=C du -ck ${OUTPUT}/initrd*.img | grep total | cut -f1 )
for KERN in ${SLACKROOT}/kernels/*.?/*zImage ; do
let USBIMG=USBIMG+$( LC_ALL=C du -sk $KERN | cut -f1 )
done
let USBIMG=USBIMG+777 # Add just that little extra...
if [ $EFIBOOT -eq 1 ]; then
# A bit more extra space since elilo will be added...
let USBIMG=USBIMG+256
fi
# Generate a pxelinux.cfg/default file (used for usbboot.img too)
cat ${SLACKROOT}/isolinux/isolinux.cfg \
| sed -e "s#/kernels/#kernels/#" > ${OUTPUT}/pxelinux.cfg_default
# Create a DOS formatted image file
if $(which mkfs.msdos 1>/dev/null 2>&1) ; then
MKDOS=mkfs.msdos
else
MKDOS=mkdosfs
fi
rm -f ${OUTPUT}/usbboot.img
${MKDOS} -n USBSLACK -F 16 -C ${OUTPUT}/usbboot.img $USBIMG || exit 1
file ${OUTPUT}/usbboot.img
# Copy all relevant files into the image.
rm -rf ${OUTPUT}/usbmount
mkdir -p -m700 ${OUTPUT}/usbmount
mount -o loop,rw ${OUTPUT}/usbboot.img ${OUTPUT}/usbmount
echo "--- Copying data to the USB boot disk image: ---"
cp $SLACKROOT/isolinux/setpkg ${OUTPUT}/usbmount/
cp $SLACKROOT/isolinux/{f*.txt,message.txt} ${OUTPUT}/usbmount/
cp ${OUTPUT}/initrd*.img ${OUTPUT}/usbmount/
cat ${OUTPUT}/pxelinux.cfg_default |sed -e 's# kernels/# #g' -e 's#/.zImage##' \
-e 's#/memtest##' \
> ${OUTPUT}/usbmount/syslinux.cfg
# Add EFI support:
if [ $EFIBOOT -eq 1 ]; then
cp -a ${SLACKROOT}/source/installer/sources/efi.${ARCH}/* ${OUTPUT}/usbmount
# Make sure the Slackware and kernel version in message.txt are up to date:
cat ${SLACKROOT}/source/installer/sources/efi.${ARCH}/EFI/BOOT/message.txt | sed "s/version.*/version ${INSTALLERVERSION} \(Linux kernel $(uname -r | cut -f 1 -d -)\)\!/g" > ${OUTPUT}/usbmount/EFI/BOOT/message.txt
fi
# Older syslinux can not cope with subdirectories - let's just be safe:
echo "--- Making the usbboot image bootable: ---"
(
cd $SLACKROOT/kernels/
for dir in `find -type d -name "*.?" -maxdepth 1` ; do
cp $dir/*zImage ${OUTPUT}/usbmount/$dir
done
cp $SLACKROOT/kernels/memtest/memtest ${OUTPUT}/usbmount/memtest
)
sync
# Stamp the file with the syslinux bootloader:
# > Do "vi ~/.mtoolsrc" to add "mtools_skip_check=1",
# > if the next command gives an error:
umount ${OUTPUT}/usbmount
syslinux ${OUTPUT}/usbboot.img
# Clean up:
rm -rf ${OUTPUT}/usbmount
)
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