#!/bin/bash -e
# **build_usb_boot.sh**
# Create a syslinux boot environment
#
# build_usb_boot.sh destdev
#
# Assumes syslinux is installed
# Needs to run as root
DEST_DIR=${1:-/tmp/syslinux-boot}
PXEDIR=${PXEDIR:-/opt/ramstack/pxe}
PROGDIR=`dirname $0`
# Clean up any resources that may be in use
cleanup() {
set +o errexit
# Mop up temporary files
if [ -n "$DEST_DEV" ]; then
umount $DEST_DIR
rmdir $DEST_DIR
fi
if [ -n "$MNTDIR" -a -d "$MNTDIR" ]; then
umount $MNTDIR
rmdir $MNTDIR
fi
# Kill ourselves to signal any calling process
trap 2; kill -2 $$
}
trap cleanup SIGHUP SIGINT SIGTERM SIGQUIT EXIT
# Keep track of the current directory
TOOLS_DIR=$(cd $(dirname "$0") && pwd)
TOP_DIR=`cd $TOOLS_DIR/..; pwd`
if [ -b $DEST_DIR ]; then
# We have a block device, install syslinux and mount it
DEST_DEV=$DEST_DIR
DEST_DIR=`mktemp -d --tmpdir mntXXXXXX`
mount $DEST_DEV $DEST_DIR
if [ ! -d $DEST_DIR/syslinux ]; then
mkdir -p $DEST_DIR/syslinux
fi
# Install syslinux on the device
syslinux --install --directory syslinux $DEST_DEV
else
# We have a directory (for sanity checking output)
DEST_DEV=""
if [ ! -d $DEST_DIR/syslinux ]; then
mkdir -p $DEST_DIR/syslinux
fi
fi
# Get some more stuff from syslinux
for i in memdisk menu.c32; do
cp -pu /usr/lib/syslinux/$i $DEST_DIR/syslinux
done
CFG=$DEST_DIR/syslinux/syslinux.cfg
cat >$CFG <