195 lines
6.5 KiB
Bash
Executable File
195 lines
6.5 KiB
Bash
Executable File
#!/bin/bash
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# Configure grub. Note that the various conditionals here are to handle
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# different distributions gracefully.
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if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
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set -x
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fi
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set -eu
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set -o pipefail
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PART_DEV=$IMAGE_BLOCK_DEVICE
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BOOT_DEV=$IMAGE_BLOCK_DEVICE_WITHOUT_PART
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function install_extlinux {
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install-packages -m bootloader extlinux
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echo "Installing Extlinux..."
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# Find and install mbr.bin
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for MBR in /usr/share/syslinux/mbr.bin /usr/lib/syslinux/mbr.bin \
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/usr/lib/extlinux/mbr.bin /usr/lib/EXTLINUX/mbr.bin ; do
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if [ -f $MBR ]; then
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break
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fi
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done
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if [ ! -f $MBR ]; then
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echo "mbr.bin (from EXT/SYSLINUX) not found."
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exit 1
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fi
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dd if=$MBR of=$BOOT_DEV
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# Find any pre-created extlinux install directory
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for EXTDIR in /boot/extlinux /boot/syslinux ; do
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if [ -d $EXTDIR ] ; then
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break
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fi
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done
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if [ ! -d $EXTDIR ] ; then
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# No install directory found so default to /boot/syslinux
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EXTDIR=/boot/syslinux
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mkdir -p $EXTDIR
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fi
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# Finally install extlinux
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extlinux --install $EXTDIR
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}
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function install_grub2 {
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# Check for offline installation of grub
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if [ -f "/tmp/grub/install" ] ; then
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source /tmp/grub/install
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elif [[ "$ARCH" =~ "ppc" ]]; then
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install-packages grub-ieee1275
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else
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install-packages -m bootloader grub-pc
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fi
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# XXX: grub-probe on the nbd0/loop0 device returns nothing - workaround, manually
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# specify modules. https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1073731
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GRUBNAME=$(which grub-install) || echo "trying grub2-install"
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if [ -z "$GRUBNAME" ]; then
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GRUBNAME=$(which grub2-install)
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fi
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# If no GRUB2 is found, fallback to extlinux
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if [ -z "$GRUBNAME" ] || [ $($GRUBNAME --version | grep "0.97" | wc -l) -ne 0 ]; then
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echo "No GRUB2 found. Fallback to Extlinux..."
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install_extlinux
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exit 0
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fi
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echo "Installing GRUB2..."
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# We need --force so grub does not fail due to being installed on the
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# root partition of a block device.
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GRUB_OPTS=${GRUB_OPTS:-"--force"}
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# XXX: This is buggy:
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# - --target=i386-pc is invalid for non-i386/amd64 architectures
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# - and for UEFI too.
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# GRUB_OPTS="$GRUB_OPTS --target=i386-pc"
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if [[ ! $GRUB_OPTS == *--target* ]] && [[ $($GRUBNAME --version) =~ ' 2.' ]]; then
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# /sys/ comes from the host machine. If the host machine is using EFI
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# but the image being built doesn't have EFI boot-images installed we
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# should set the --target to use a BIOS-based boot-image.
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#
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# * --target tells grub what's the target platform
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# * the boot images are placed in /usr/lib/grub/<cpu>-<platform>
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# * i386-pc is used for BIOS-based machines
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# http://www.gnu.org/software/grub/manual/grub.html#Installation
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#
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if [ -d /sys/firmware/efi ]; then
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if [ ! -d /usr/lib/grub/*-efi ]; then
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case $ARCH in
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"x86_64"|"amd64")
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GRUB_OPTS="$GRUB_OPTS --target=i386-pc"
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;;
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"i386")
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target=i386-pc
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if [ -e /proc/device-tree ]; then
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for x in /proc/device-tree/*; do
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if [ -e "$x" ]; then
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target="i386-ieee1275"
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fi
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done
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fi
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GRUB_OPTS="$GRUB_OPTS --target=$target"
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;;
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esac
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fi
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fi
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fi
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if [[ "$ARCH" =~ "ppc" ]] ; then
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$GRUBNAME --modules="part_msdos" $GRUB_OPTS $BOOT_DEV --no-nvram
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else
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$GRUBNAME --modules="biosdisk part_msdos" $GRUB_OPTS $BOOT_DEV
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fi
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# This might be better factored out into a per-distro 'install-bootblock'
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# helper.
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if [ -d /boot/grub2 ]; then
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GRUB_CFG=/boot/grub2/grub.cfg
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elif [ -d /boot/grub ]; then
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GRUB_CFG=/boot/grub/grub.cfg
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fi
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# Override the root device to the default label, and disable uuid
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# lookup.
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echo "GRUB_DEVICE=LABEL=${DIB_ROOT_LABEL}" >> /etc/default/grub
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echo 'GRUB_DISABLE_LINUX_UUID=true' >> /etc/default/grub
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echo "GRUB_TIMEOUT=${DIB_GRUB_TIMEOUT:-5}" >>/etc/default/grub
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echo 'GRUB_TERMINAL="serial console"' >>/etc/default/grub
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echo 'GRUB_GFXPAYLOAD_LINUX=text' >>/etc/default/grub
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echo 'GRUB_CMDLINE_LINUX_DEFAULT="console=tty0 console=ttyS0,115200 no_timer_check"' >>/etc/default/grub
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echo 'GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"' >>/etc/default/grub
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if which grub2-mkconfig >/dev/null; then
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GRUB_MKCONFIG="grub2-mkconfig -o $GRUB_CFG"
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else
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GRUB_MKCONFIG="grub-mkconfig -o $GRUB_CFG"
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fi
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DISTRO_NAME=${DISTRO_NAME:-}
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case $DISTRO_NAME in
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'ubuntu'|'debian')
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sed -i -e "s/\(^GRUB_CMDLINE_LINUX.*\)\"$/\1 ${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"/" /etc/default/grub
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GRUB_MKCONFIG=update-grub
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;;
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'fedora'|'centos7'|'centos')
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echo "GRUB_CMDLINE_LINUX=\"${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"" >>/etc/default/grub
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;;
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'opensuse')
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sed -i -e "s/\(^GRUB_CMDLINE_LINUX.*\)\"$/\1 ${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"/" /etc/default/grub
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;;
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esac
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# os-prober leaks /dev/sda into config file in dual-boot host
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# Disable grub-os-prober to avoid the issue while running
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# grub-mkconfig
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# Setting a flag to track whether the entry is already there in grub config
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PROBER_DISABLED=
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if ! grep -qe "^\s*GRUB_DISABLE_OS_PROBER=true" /etc/default/grub; then
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PROBER_DISABLED=true
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echo 'GRUB_DISABLE_OS_PROBER=true' >> /etc/default/grub
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fi
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$GRUB_MKCONFIG
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# Remove the fix to disable os_prober
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if [ -n "$PROBER_DISABLED" ]; then
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sed -i '$d' /etc/default/grub
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fi
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# grub-mkconfig generates a config with the device in it,
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# This shouldn't be needed, but old code has bugs
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DIB_RELEASE=${DIB_RELEASE:-}
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if [ "$DIB_RELEASE" = 'wheezy' ]; then
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sed -i "s%search --no.*%%" $GRUB_CFG
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sed -i "s%set root=.*%set root=(hd0,1)%" $GRUB_CFG
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fi
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# Fix efi specific instructions in grub config file
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if [ -d /sys/firmware/efi ]; then
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sed -i 's%\(initrd\|linux\)efi /boot%\1 /boot%g' $GRUB_CFG
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fi
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}
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DIB_EXTLINUX=${DIB_EXTLINUX:-0}
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if [ "$DIB_EXTLINUX" != "0" ]; then
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install_extlinux
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else
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install_grub2
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fi
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