[GRUB PATCH 1/2] 20_linux_xen: Ignore xenpolicy and config files too

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

"file_is_not_sym" currently only checks for xen-syms.  Extend it to
disregard xenpolicy (XSM policy files) and files ending .config (which
are built by the Xen upstream build system in some configurations and
can therefore end up in /boot).

Rename the function accordingly, to "file_is_not_xen_garbage".

Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
 util/grub.d/20_linux_xen.in | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index 81e5f0d7e..30da49d66 100644
--- a/util/grub.d/20_linux_xen.in
+++ b/util/grub.d/20_linux_xen.in
@@ -181,10 +181,14 @@ if [ "x${linux_list}" = "x" ] ; then
     exit 0
 fi
 
-file_is_not_sym () {
+file_is_not_xen_garbage () {
     case "$1" in
        */xen-syms-*)
            return 1;;
+       */xenpolicy-*)
+           return 1;;
+       */*.config)
+           return 1;;
        *)
            return 0;;
     esac
@@ -192,7 +196,7 @@ file_is_not_sym () {
 
 xen_list=
 for i in /boot/xen*; do
-    if grub_file_is_not_garbage "$i" && file_is_not_sym "$i" ; then 
xen_list="$xen_list $i" ; fi
+    if grub_file_is_not_garbage "$i" && file_is_not_xen_garbage "$i" ; then 
xen_list="$xen_list $i" ; fi
 done
 prepare_boot_cache=
 boot_device_id=
-- 
2.20.1