135 lines
4.0 KiB
Bash
135 lines
4.0 KiB
Bash
#! /bin/sh -e
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if [ -f /usr/lib/grub/grub-mkconfig_lib ]; then
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. /usr/lib/grub/grub-mkconfig_lib
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else
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# no grub file, so we notify and exit gracefully
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echo "Cannot find grub config file, exiting." >&2
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exit 0
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fi
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XEN_HYPERVISOR_CMDLINE="dom0_mem=512M"
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XEN_LINUX_CMDLINE="console=tty0"
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if [ -f /etc/default/grub ]; then
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. /etc/default/grub
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fi
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CLASS="--class gnu-linux --class gnu --class os"
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if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
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OS=GNU/Linux
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else
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OS="${GRUB_DISTRIBUTOR} GNU/Linux"
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CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr '[A-Z]' '[a-z]' | cut -d' ' -f1) ${CLASS}"
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fi
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# loop-AES arranges things so that /dev/loop/X can be our root device, but
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# the initrds that Linux uses don't like that.
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case ${GRUB_DEVICE} in
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/dev/loop/*|/dev/loop[0-9])
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GRUB_DEVICE=`losetup ${GRUB_DEVICE} | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
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;;
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esac
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if [ "x${GRUB_DEVICE_UUID}" = "x" ] || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
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|| ! test -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" \
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|| [ "`grub-probe -t abstraction --device ${GRUB_DEVICE} | sed -e 's,.*\(lvm\).*,\1,'`" = "lvm" ] ; then
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LINUX_ROOT_DEVICE=${GRUB_DEVICE}
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else
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LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
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fi
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xen_entry ()
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{
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os="$1"
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xen_version="$2"
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version="$3"
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xen_args="$4"
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args="$5"
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recovery="$6"
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printf "menuentry '%s Xen %s, with Linux %s%s' --class xen ${CLASS} {\n" \
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"${os}" "${xen_version}" "${version}" "${recovery}"
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save_default_entry | sed -e "s/^/\t/"
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if [ -z "${prepare_boot_cache}" ]; then
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prepare_boot_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/\t/")"
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fi
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printf '%s\n' "${prepare_boot_cache}"
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cat << EOF
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echo '$(printf "Loading Xen hypervisor %s ..." ${xen_version})'
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multiboot ${rel_dirname}/${xen_basename} ${xen_args}
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echo $(printf "$(gettext "Loading Linux %s kernel ...")" ${version})
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module ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro ${args}
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EOF
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if test -n "${initrd}" ; then
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cat << EOF
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echo "Loading initial ramdisk ..."
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module ${rel_dirname}/${initrd}
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EOF
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fi
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cat << EOF
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}
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EOF
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}
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xen_list=`for i in /boot/xen-*.gz; do
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if grub_file_is_not_garbage "$i" && ! test -h "$i"; then echo -n "$i "; fi
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done`
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prepare_boot_cache=
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while [ "x$xen_list" != "x" ] ; do
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xen=`version_find_latest $xen_list`
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echo "Found Xen hypervisor image: $xen" >&2
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xen_basename=`basename $xen`
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xen_dirname=`dirname $xen`
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rel_xen_dirname=`make_system_path_relative_to_its_root $xen_dirname`
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xen_version=`echo $xen_basename | sed -e "s,^[^0-9]*-,,g" | sed -e "s,.gz,,g"`
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alt_xen_version=`echo $xen_version | sed -e "s,\.old$,,g"`
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xen_configfiles=`grep -l 'CONFIG_XEN_PRIVILEGED_GUEST=y' /boot/config-*`
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for i in $xen_configfiles ; do
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i=`echo $i | sed -e "s,/boot/config-,/boot/vmlinuz-,g"`;
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if grub_file_is_not_garbage "$i"; then
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list="$list $i";
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fi
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done
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while [ "x$list" != "x" ] ; do
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linux=`version_find_latest $list`
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echo "Found linux image: $linux" >&2
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basename=`basename $linux`
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dirname=`dirname $linux`
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rel_dirname=`make_system_path_relative_to_its_root $dirname`
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version=`echo $basename | sed -e "s,^[^0-9]*-,,g"`
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linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"
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initrd=
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for i in "initrd.img-${version}"; do
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if test -e "${dirname}/${i}" ; then
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initrd="$i"
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break
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fi
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done
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if test -n "${initrd}" ; then
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echo "Found initrd image: ${dirname}/${initrd}" >&2
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else
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# "UUID=" magic is parsed by initrds. Since there's no initrd, it can't work here.
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linux_root_device_thisversion=${GRUB_DEVICE}
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fi
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xen_entry "${OS}" "${xen_version}" "${version}" \
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"${XEN_HYPERVISOR_CMDLINE}" "${GRUB_CMDLINE_LINUX_DEFAULT}"
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if [ "x${GRUB_DISABLE_LINUX_RECOVERY}" != "xtrue" ]; then
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xen_entry "${OS}" "${xen_version}" "${version}" \
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"${XEN_HYPERVISOR_CMDLINE}" "single ${GRUB_CMDLINE_LINUX_DEFAULT}" \
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" (recovery mode)"
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fi
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list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
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done
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xen_list=`echo $xen_list | tr ' ' '\n' | grep -vx $xen | tr '\n' ' '`
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done
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