[PATCH v2] templates/linux_xen: Fix XSM entries generation

[Anthony PERARD]

It turns out that setting $xen_version in linux_entry_xsm() override
$xen_version in the loop over $reverse_sorted_xen_list. This means
that only one entry per Xen version is going to enable XSM, but all
further entries are going to have "(XSM enabled)" in their titles
without enabling XSM.

When a "xenpolicy-$xen_version" file was found for the current
$xen_version, it would overwrite $xen_version to add "(XSM enabled)"
to the menu entry title. Once updated, the next call to
linux_entry_xsm() would also have this modified $xen_version and would
look for the file "xenpolicy-*(XSM enabled)" and fail.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---

Notes:
    v2:
    - fix commit message.

 util/grub.d/20_linux_xen.in | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index e46b757da..94dd8be13 100644
--- a/util/grub.d/20_linux_xen.in
+++ b/util/grub.d/20_linux_xen.in
@@ -98,7 +98,7 @@ linux_entry_xsm ()
 {
   os="$1"
   version="$2"
-  xen_version="$3"
+  entry_xen_version="$3"
   type="$4"
   args="$5"
   xen_args="$6"
@@ -107,25 +107,25 @@ linux_entry_xsm ()
   # corresponding policy file.
   xenpolicy=
   if ${xsm} ; then
-      xenpolicy="xenpolicy-$xen_version"
+      xenpolicy="xenpolicy-$entry_xen_version"
       if test ! -e "${xen_dirname}/${xenpolicy}" ; then
          return
       fi
       xen_args="$xen_args flask=enforcing"
-      xen_version="$(gettext_printf "%s (XSM enabled)" "$xen_version")"
-      # xen_version is used for messages only; actual file is xen_basename
+      entry_xen_version="$(gettext_printf "%s (XSM enabled)" 
"$entry_xen_version")"
+      # entry_xen_version is used for messages only; actual file is 
xen_basename
   fi
   if [ -z "$boot_device_id" ]; then
       boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
   fi
   if [ x$type != xsimple ] ; then
       if [ x$type = xrecovery ] ; then
-         title="$(gettext_printf "%s, with Xen %s and Linux %s (recovery 
mode)" "${os}" "${xen_version}" "${version}")"
+         title="$(gettext_printf "%s, with Xen %s and Linux %s (recovery 
mode)" "${os}" "${entry_xen_version}" "${version}")"
       else
-         title="$(gettext_printf "%s, with Xen %s and Linux %s" "${os}" 
"${xen_version}" "${version}")"
+         title="$(gettext_printf "%s, with Xen %s and Linux %s" "${os}" 
"${entry_xen_version}" "${version}")"
       fi
       replacement_title="$(echo "Advanced options for ${OS}" | sed 
's,>,>>,g')>$(echo "$title" | sed 's,>,>>,g')"
-      if [ x"Xen ${xen_version}>$title" = x"$GRUB_ACTUAL_DEFAULT" ]; then
+      if [ x"Xen ${entry_xen_version}>$title" = x"$GRUB_ACTUAL_DEFAULT" ]; then
          quoted="$(echo "$GRUB_ACTUAL_DEFAULT" | grub_quote)"
          title_correction_code="${title_correction_code}if [ \"x\$default\" = 
'$quoted' ]; then default='$(echo "$replacement_title" | grub_quote)'; fi;"
          grub_warn "$(gettext_printf "Please don't use old title \`%s' for 
GRUB_DEFAULT, use \`%s' (for versions before 2.00) or \`%s' (for 2.00 or 
later)" "$GRUB_ACTUAL_DEFAULT" "$replacement_title" 
"gnulinux-advanced-$boot_device_id>gnulinux-$version-$type-$boot_device_id")"
@@ -143,7 +143,7 @@ linux_entry_xsm ()
     prepare_boot_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | 
grub_add_tab)"
   fi
   printf '%s\n' "${prepare_boot_cache}" | sed "s/^/$submenu_indentation/"
-  xmessage="$(gettext_printf "Loading Xen %s ..." ${xen_version})"
+  xmessage="$(gettext_printf "Loading Xen %s ..." ${entry_xen_version})"
   lmessage="$(gettext_printf "Loading Linux %s ..." ${version})"
   sed "s/^/$submenu_indentation/" << EOF
        echo    '$(echo "$xmessage" | grub_quote)'
-- 
Anthony PERARD