kernels/xe-guest-utilities

1 files changed, 123 insertions, 0 deletions

diff --git a/kernels/xen/09_xen b/kernels/xen/09_xen
new file mode 100755
index 000000000..094b7f427
--- /dev/null
+++ b/kernels/xen/09_xen
@@ -0,0 +1,123 @@
+#! /bin/sh -e
+
+if [ -f /usr/lib/grub/grub-mkconfig_lib ]; then
+  . /usr/lib/grub/grub-mkconfig_lib
+else
+  # no grub file, so we notify and exit gracefully
+  echo "Cannot find grub config file, exiting." >&2
+  exit 0
+fi
+
+XEN_HYPERVISOR_CMDLINE=
+XEN_LINUX_CMDLINE="console=tty0"
+[ -r /etc/xen/grub.conf ] && . /etc/xen/grub.conf
+
+CLASS="--class gnu-linux --class gnu --class os"
+
+if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
+  OS=GNU/Linux
+else
+  OS="${GRUB_DISTRIBUTOR}"
+  CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr '[A-Z]' '[a-z]' | cut -d' ' -f1) ${CLASS}"
+fi
+
+# loop-AES arranges things so that /dev/loop/X can be our root device, but
+# the initrds that Linux uses don't like that.
+case ${GRUB_DEVICE} in
+  /dev/loop/*|/dev/loop[0-9])
+    GRUB_DEVICE=`losetup ${GRUB_DEVICE} | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
+  ;;
+esac
+
+if [ "x${GRUB_DEVICE_UUID}" = "x" ] || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
+    || ! test -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" \
+    || [ "`grub-probe -t abstraction --device ${GRUB_DEVICE} | sed -e 's,.*\(lvm\).*,\1,'`" = "lvm"  ] ; then
+  LINUX_ROOT_DEVICE=${GRUB_DEVICE}
+else
+  LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
+fi
+
+xen_entry ()
+{
+  os="$1"
+  xen_version="$2"
+  version="$3"
+  xen_args="$4"
+  args="$5"
+  printf "menuentry 'Xen %s / %s, with Linux %s' --class xen ${CLASS} {\n" "${xen_version}" "${os}" "${version}"
+  save_default_entry | sed -e "s/^/\t/"
+
+  if [ -z "${prepare_boot_cache}" ]; then
+    prepare_boot_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/\t/")"
+  fi
+  printf '%s\n' "${prepare_boot_cache}"
+  cat << EOF
+       echo    '$(printf "Loading Xen %s ..." ${xen_version})'
+       multiboot       ${rel_dirname}/${xen_basename} ${rel_dirname}/${xen_basename} ${xen_args}
+       echo    $(printf "$(gettext "Loading Linux %s ...")" ${version})
+       module  ${rel_dirname}/${basename} ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro ${args}
+EOF
+  if test -n "${initrd}" ; then
+    cat << EOF
+       echo    "Loading initial ramdisk ..."
+       module  ${rel_dirname}/${initrd}
+EOF
+  fi
+  cat << EOF
+}
+EOF
+}
+
+xen_list=`for i in /boot/xen-*.gz /xen-*.gz ; do
+       if grub_file_is_not_garbage "$i" ; then echo -n "$i "; fi
+done`
+prepare_boot_cache=
+
+while [ "x$xen_list" != "x" ] ; do
+  xen=`version_find_latest $xen_list`
+  echo "Found Xen hypervisor image: $xen" >&2
+  xen_basename=`basename $xen`
+  xen_dirname=`dirname $xen`
+  rel_xen_dirname=`make_system_path_relative_to_its_root $xen_dirname`
+  xen_version=`echo $xen_basename | sed -e "s,^[^0-9]*-,,g" | sed -e "s,.gz,,g"`
+  alt_xen_version=`echo $xen_version | sed -e "s,\.old$,,g"`
+
+  xen_configfiles=`grep -l 'CONFIG_XEN_PRIVILEGED_GUEST=y' /boot/config-*`
+
+  list="/boot/vmlinuz-linux-libre";
+
+  while [ "x$list" != "x" ] ; do
+    linux=`version_find_latest $list`
+    echo -e "\tFound linux image: $linux" >&2
+    basename=`basename $linux`
+    dirname=`dirname $linux`
+    rel_dirname=`make_system_path_relative_to_its_root $dirname`
+    version=`echo $basename | sed -e "s,^[^0-9]*-,,g"`
+    base_init=`echo $basename | sed -e "s,vmlinuz,initramfs,g"`
+    alt_version="${base_init}-fallback"
+    linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"
+    initrd=
+
+    for i in "${base_init}.img"; do
+       if test -e "${dirname}/${i}" ; then
+         initrd="$i"
+         break
+       fi
+    done
+    if test -n "${initrd}" ; then
+      echo -e "\tFound initrd image: ${dirname}/${initrd}" >&2
+    else
+      # "UUID=" magic is parsed by initrds.  Since there's no initrd, it can't work here.
+      linux_root_device_thisversion=${GRUB_DEVICE}
+    fi
+
+    xen_entry "${OS}" "${xen_version}" "${version}" \
+        "${XEN_HYPERVISOR_CMDLINE}" \
+       "${XEN_LINUX_CMDLINE}"
+
+    list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
+  done
+
+  xen_list=`echo $xen_list | tr ' ' '\n' | grep -vx $xen | tr '\n' ' '`
+done
+