xen configuration preliminary support based on enhanced version of a kludge I use

diff --git a/conf/common.rmk b/conf/common.rmk
index beee25be93f2c11f0f602962138c41b95d47fcda..641a2c62adb217128921d173b9ca4e83b010450d 100644 (file)
--- a/conf/common.rmk
+++ b/conf/common.rmk
@@ -219,6 +219,9 @@ grub-mkconfig_SCRIPTS = 00_header 30_os-prober 40_custom
 ifneq (, $(host_kernel))
 grub-mkconfig_SCRIPTS += 10_$(host_kernel)
 endif
+ifeq (linux, $(host_kernel))
+grub-mkconfig_SCRIPTS += 20_linux_xen
+endif
 
 CLEANFILES += $(grub-mkconfig_SCRIPTS)
 

diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in
index 85212f8fc0b30efc53a9032e9b3bd272e7d6df7e..17b7f7e3804ee09d4798f6642f7fb66cbf6f35ad 100644 (file)
--- a/util/grub-mkconfig.in
+++ b/util/grub-mkconfig.in
@@ -239,6 +239,8 @@ export GRUB_DEFAULT \
   GRUB_DISTRIBUTOR \
   GRUB_CMDLINE_LINUX \
   GRUB_CMDLINE_LINUX_DEFAULT \
+  GRUB_CMDLINE_XEN \
+  GRUB_CMDLINE_XEN_DEFAULT \
   GRUB_CMDLINE_NETBSD \
   GRUB_CMDLINE_NETBSD_DEFAULT \
   GRUB_TERMINAL_INPUT \

diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
new file mode 100644 (file)
index 0000000..862f438
--- /dev/null
+++ b/util/grub.d/20_linux_xen.in
@@ -0,0 +1,139 @@
+#! /bin/sh -e
+
+# grub-mkconfig helper script.
+# Copyright (C) 2006,2007,2008,2009,2010  Free Software Foundation, Inc.
+#
+# GRUB is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# GRUB is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+bindir=@bindir@
+libdir=@libdir@
+. ${libdir}/grub/grub-mkconfig_lib
+
+export TEXTDOMAIN=@PACKAGE@
+export TEXTDOMAINDIR=@localedir@
+
+CLASS="--class gnu-linux --class gnu --class os --class xen"
+
+if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
+  OS=GNU/Linux
+else
+  OS="${GRUB_DISTRIBUTOR} GNU/Linux"
+  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/${GRUB_DEVICE_UUID}" ; then
+  LINUX_ROOT_DEVICE=${GRUB_DEVICE}
+else
+  LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
+fi
+
+linux_entry ()
+{
+  os="$1"
+  version="$2"
+  xen_version="$3"
+  recovery="$4"
+  args="$5"
+  xen_args="$6"
+  if ${recovery} ; then
+    title="$(gettext_quoted "%s, with Linux %s and XEN %s (recovery mode)")"
+  else
+    title="$(gettext_quoted "%s, with Linux %s and XEN %s")"
+  fi
+  printf "menuentry '${title}' ${CLASS} {\n" "${os}" "${version}" "${xen_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    '$(printf "$(gettext_quoted "Loading Linux %s ...")" ${version})'
+       multiboot       ${rel_xen_dirname}/${xen_basename} placeholder ${xen_args}
+       module  ${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
+EOF
+  if test -n "${initrd}" ; then
+    cat << EOF
+       echo    '$(gettext_quoted "Loading initial ramdisk ...")'
+       module  ${rel_dirname}/${initrd}
+EOF
+  fi
+  cat << EOF
+}
+EOF
+}
+
+linux_list=`for i in /boot/vmlinu[xz]-*jeremy* /vmlinu[xz]-*jeremy* ; do
+        if grub_file_is_not_garbage "$i" ; then echo -n "$i " ; fi
+      done`
+xen_list=`for i in /boot/xen*; do
+        if grub_file_is_not_garbage "$i" ; then echo -n "$i " ; fi
+      done`
+prepare_boot_cache=
+
+while [ "x${xen_list}" != "x" ] ; do
+    list="${linux_list}"
+    current_xen=`version_find_latest $xen_list`
+    xen_basename=`basename ${current_xen}`
+    xen_dirname=`dirname ${current_xen}`
+    rel_xen_dirname=`make_system_path_relative_to_its_root $xen_dirname`
+    xen_version=`echo $xen_basename | sed -e "s,.gz$,,g;s,^xen-,,g"`
+    while [ "x$list" != "x" ] ; do
+       linux=`version_find_latest $list`
+       echo "Found 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"`
+       alt_version=`echo $version | sed -e "s,\.old$,,g"`
+       linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"
+
+       initrd=
+       for i in "initrd.img-${version}" "initrd-${version}.img" \
+           "initrd-${version}" "initrd.img-${alt_version}" \
+           "initrd-${alt_version}.img" "initrd-${alt_version}"; do
+           if test -e "${dirname}/${i}" ; then
+               initrd="$i"
+               break
+           fi
+       done
+       if test -n "${initrd}" ; then
+           echo "Found 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=${GRUB_DEVICE}
+       fi
+
+       linux_entry "${OS}" "${version}" "${xen_version}" false \
+           "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}" "${GRUB_CMDLINE_XEN} ${GRUB_CMDLINE_XEN_DEFAULT}"
+       if [ "x${GRUB_DISABLE_LINUX_RECOVERY}" != "xtrue" ]; then
+           linux_entry "${OS}" "${version}" "${xen_version}" true \
+               "single ${GRUB_CMDLINE_LINUX}" "${GRUB_CMDLINE_XEN}"
+       fi
+
+       list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
+    done
+    xen_list=`echo $xen_list | tr ' ' '\n' | grep -vx $current_xen | tr '\n' ' '`
+done