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118 lines
2.6 KiB
Bash
118 lines
2.6 KiB
Bash
#!/bin/bash -e
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# build_pxe_env.sh - Create a PXE boot environment
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#
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# build_pxe_env.sh destdir
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#
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# Requires Ubuntu Oneiric
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#
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# Only needs to run as root if the destdir permissions require it
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dpkg -l syslinux || apt-get install -y syslinux
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DEST_DIR=${1:-/tmp}/tftpboot
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PXEDIR=${PXEDIR:-/opt/ramstack/pxe}
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PROGDIR=`dirname $0`
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# Clean up any resources that may be in use
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cleanup() {
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set +o errexit
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# Mop up temporary files
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if [ -n "$MNTDIR" -a -d "$MNTDIR" ]; then
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umount $MNTDIR
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rmdir $MNTDIR
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fi
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# Kill ourselves to signal any calling process
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trap 2; kill -2 $$
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}
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trap cleanup SIGHUP SIGINT SIGTERM SIGQUIT EXIT
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# Keep track of the current directory
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TOOLS_DIR=$(cd $(dirname "$0") && pwd)
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TOP_DIR=`cd $TOOLS_DIR/..; pwd`
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mkdir -p $DEST_DIR/pxelinux.cfg
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cd $DEST_DIR
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for i in memdisk menu.c32 pxelinux.0; do
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cp -pu /usr/lib/syslinux/$i $DEST_DIR
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done
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CFG=$DEST_DIR/pxelinux.cfg/default
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cat >$CFG <<EOF
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default menu.c32
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prompt 0
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timeout 0
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MENU TITLE devstack PXE Boot Menu
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EOF
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# Setup devstack boot
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mkdir -p $DEST_DIR/ubuntu
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if [ ! -d $PXEDIR ]; then
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mkdir -p $PXEDIR
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fi
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# Get image into place
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if [ ! -r $PXEDIR/stack-initrd.img ]; then
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cd $TOP_DIR
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$PROGDIR/build_ramdisk.sh $PXEDIR/stack-initrd.img
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fi
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if [ ! -r $PXEDIR/stack-initrd.gz ]; then
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gzip -1 -c $PXEDIR/stack-initrd.img >$PXEDIR/stack-initrd.gz
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fi
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cp -pu $PXEDIR/stack-initrd.gz $DEST_DIR/ubuntu
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if [ ! -r $PXEDIR/vmlinuz-*-generic ]; then
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MNTDIR=`mktemp -d --tmpdir mntXXXXXXXX`
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mount -t ext4 -o loop $PXEDIR/stack-initrd.img $MNTDIR
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if [ ! -r $MNTDIR/boot/vmlinuz-*-generic ]; then
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echo "No kernel found"
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umount $MNTDIR
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rmdir $MNTDIR
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exit 1
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else
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cp -pu $MNTDIR/boot/vmlinuz-*-generic $PXEDIR
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fi
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umount $MNTDIR
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rmdir $MNTDIR
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fi
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# Get generic kernel version
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KNAME=`basename $PXEDIR/vmlinuz-*-generic`
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KVER=${KNAME#vmlinuz-}
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cp -pu $PXEDIR/vmlinuz-$KVER $DEST_DIR/ubuntu
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cat >>$CFG <<EOF
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LABEL devstack
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MENU LABEL ^devstack
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MENU DEFAULT
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KERNEL ubuntu/vmlinuz-$KVER
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APPEND initrd=ubuntu/stack-initrd.gz ramdisk_size=2109600 root=/dev/ram0
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EOF
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# Get Ubuntu
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if [ -d $PXEDIR -a -r $PXEDIR/natty-base-initrd.gz ]; then
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cp -pu $PXEDIR/natty-base-initrd.gz $DEST_DIR/ubuntu
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cat >>$CFG <<EOF
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LABEL ubuntu
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MENU LABEL ^Ubuntu Natty
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KERNEL ubuntu/vmlinuz-$KVER
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APPEND initrd=ubuntu/natty-base-initrd.gz ramdisk_size=419600 root=/dev/ram0
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EOF
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fi
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# Local disk boot
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cat >>$CFG <<EOF
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LABEL local
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MENU LABEL ^Local disk
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LOCALBOOT 0
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EOF
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trap cleanup SIGHUP SIGINT SIGTERM SIGQUIT EXIT
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