diskimage-builder/elements/iso/cleanup.d/100-build-iso
Ramakrishnan G 8c9ee78ab5 iso element to use 'search --label' for grub
Current iso element uses 'search --file' to find the
grub root.  This is a wrong approach as it may find
some other partition containing /vmlinuz. Instead modify
it to search for grub root by the label of ISO image.

Closes-Bug: 1384826
Change-Id: Id4217be3420597bed2f80a96788928259ec91582
2014-10-23 23:04:17 +05:30

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#!/bin/bash
#
# Copyright 2014 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
set -eux
set -o pipefail
function build_efiboot_img() {
cat > "$TMP_BUILD_DIR/grub-embedded.cfg" << END_CONFIG
search --set=root --label VMEDIA_BOOT_ISO
set prefix=(\$root)/EFI/BOOT/
END_CONFIG
grub-mkimage --format=x86_64-efi --output=$TMP_BUILD_DIR/bootx64.efi \
--config=$TMP_BUILD_DIR/grub-embedded.cfg --compression=xz \
--prefix=/EFI/BOOT part_gpt part_msdos fat ext2 hfs hfsplus \
iso9660 udf ufs1 ufs2 zfs chain linux boot appleldr ahci \
configfile normal regexp minicmd reboot halt search \
search_fs_file search_fs_uuid search_label gfxterm gfxmenu \
efi_gop efi_uga all_video loadbios gzio echo true probe \
loadenv bitmap_scale font cat help ls png jpeg tga test \
at_keyboard usb_keyboard
# Create a FAT formatted image that contains bootx64.efi in the /EFI/BOOT
# directory. This is used to bootstrap GRUB from the ISO image.
dd if=/dev/zero of=$TMP_BUILD_DIR/efiboot.img bs=1K count=1440
mkdosfs -F 12 $TMP_BUILD_DIR/efiboot.img
# Create a temporary mount point:
MOUNTPOINT=$TMP_BUILD_DIR/tmpmount
mkdir $MOUNTPOINT
sudo mount -o loop $TMP_BUILD_DIR/efiboot.img $MOUNTPOINT
sudo mkdir -p $MOUNTPOINT/EFI/BOOT
sudo cp $TMP_BUILD_DIR/bootx64.efi $MOUNTPOINT/EFI/BOOT
sudo umount $MOUNTPOINT
rmdir $MOUNTPOINT
cp $TMP_BUILD_DIR/efiboot.img $TMP_IMAGE_DIR/isolinux
}
function build_iso() {
KERNEL=$1
INITRD=$2
KERNEL_CMDLINE_ARGS=$3
OUTPUT_FILENAME=$4
SCRIPTNAME=$(basename $0)
SCRIPTDIR=$(dirname $0)
MKISOFS="/usr/bin/mkisofs"
EFI_BOOT_DIR="EFI/BOOT"
# Create a temporary build directory for holiding the contents of iso
TMP_IMAGE_DIR="$TMP_BUILD_DIR/image"
echo "Creating temporary directory $TMP_IMAGE_DIR"
mkdir -p "$TMP_IMAGE_DIR"
# Copy isolinux bin to the isolinux directory
mkdir -p "$TMP_IMAGE_DIR/isolinux"
echo "Copying isolinux.bin"
# TODO(rameshg87): Something similar to pkg-map can be used here.
# But pkg-map doesn't work for cleanup scripts right now.
if [ $DISTRO_NAME = "fedora" ]; then
ISOLINUX_BIN=/usr/share/syslinux/isolinux.bin
else
ISOLINUX_BIN=/usr/lib/syslinux/isolinux.bin
fi
cp $ISOLINUX_BIN "$TMP_IMAGE_DIR/isolinux"
# Copy initrd, kernel
echo "Copying kernel to $TMP_IMAGE_DIR/vmlinuz"
cp $KERNEL "$TMP_IMAGE_DIR/vmlinuz"
echo "Copying initrd to $TMP_IMAGE_DIR/initrd"
cp $INITRD "$TMP_IMAGE_DIR/initrd"
# Generate isolinux.cfg for default booting
echo "Generating isolinux.cfg"
cat > "$TMP_IMAGE_DIR/isolinux/isolinux.cfg" << END_CONFIG
DEFAULT install
LABEL install
menu label "Install image"
kernel /vmlinuz
append initrd=/initrd $KERNEL_CMDLINE_ARGS --
TIMEOUT 5
PROMPT 0
END_CONFIG
echo "Creating EFI/BOOT directory"
mkdir -p "$TMP_IMAGE_DIR/$EFI_BOOT_DIR"
# Generate grub.cfg for default booting
echo "Generating grub.cfg"
cat > "$TMP_IMAGE_DIR/$EFI_BOOT_DIR/grub.cfg" << END_CONFIG
set default="0"
set timeout="5"
set hidden_timeout_quiet=false
menuentry "install" {
linux /vmlinuz $KERNEL_CMDLINE_ARGS --
initrd /initrd
}
END_CONFIG
DIB_UEFI_ISO_BUILD_EFIBOOT=${DIB_UEFI_ISO_BUILD_EFIBOOT:-}
if [ -n "$DIB_UEFI_ISO_BUILD_EFIBOOT" ]; then
build_efiboot_img
else
cp $SCRIPTDIR/efiboot.img $TMP_IMAGE_DIR/isolinux
fi
# Create the ISO
echo "Generating the ISO"
$MKISOFS -r -V "VMEDIA_BOOT_ISO" -cache-inodes -J -l \
-b isolinux/isolinux.bin -no-emul-boot \
-boot-load-size 4 -boot-info-table \
-eltorito-alt-boot -e isolinux/efiboot.img \
-no-emul-boot -o $OUTPUT_FILENAME $TMP_IMAGE_DIR
}
IMAGE_NAME=${IMAGE_NAME:-'image'}
if echo $IMAGE_ELEMENT | grep -q '\bramdisk\b'; then
EMITTED_KERNEL=$IMAGE_NAME.kernel
EMITTED_RAMDISK=$IMAGE_NAME.initramfs
EMITTED_KERNEL_CMDLINE_ARGS="boot_method=vmedia"
EMITTED_ISO_FILENAME=$IMAGE_NAME.iso
elif echo $IMAGE_ELEMENT | grep -q '\bbaremetal\b'; then
EMITTED_KERNEL=${IMAGE_NAME}.vmlinuz
EMITTED_RAMDISK=${IMAGE_NAME}.initrd
EMITTED_KERNEL_CMDLINE_ARGS="root=UUID=$DIB_IMAGE_ROOT_FS_UUID"
DIB_BOOT_ISO_KERNEL_CMDLINE_ARGS=${DIB_BOOT_ISO_KERNEL_CMDLINE_ARGS:-}
if [ -n "$DIB_BOOT_ISO_KERNEL_CMDLINE_ARGS" ]; then
EMITTED_KERNEL_CMDLINE_ARGS="$EMITTED_KERNEL_CMDLINE_ARGS $DIB_BOOT_ISO_KERNEL_CMDLINE_ARGS"
fi
export EMITTED_ISO_FILENAME="$IMAGE_NAME-boot.iso"
else
echo "Cannot find the kernel/ramdisk to build the iso image. "
echo "Please use 'iso' element with either 'baremetal' or 'ramdisk' elements"
fi
build_iso "$EMITTED_KERNEL" "$EMITTED_RAMDISK" "$EMITTED_KERNEL_CMDLINE_ARGS" \
"$EMITTED_ISO_FILENAME"