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[Xen-devel] [OSSTEST Nested PATCH v10 1/9] Parsing grub which has 'submenu' primitive



From a hvm kernel build from Linux stable Kernel tree,
the auto generated grub2 menu will have 'submenu' primitive, upon the
'menuentry' items. Xen boot entries will be grouped into a submenu. This
patch adds capability to support such grub formats.

Signed-off-by: longtao.pang <longtaox.pang@xxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 Osstest/Debian.pm |   13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/Osstest/Debian.pm b/Osstest/Debian.pm
index 4476af5..3a1a515 100644
--- a/Osstest/Debian.pm
+++ b/Osstest/Debian.pm
@@ -407,10 +407,18 @@ sub setupboot_grub2 ($$$$) {
     
         my $count= 0;
         my $entry;
+        my $submenu;
         while (<$f>) {
             next if m/^\s*\#/ || !m/\S/;
             if (m/^\s*\}\s*$/) {
-                die unless $entry;
+                die unless $entry || $submenu;
+                if(!defined $entry && defined $submenu){
+                    logm("Met end of a submenu starting from ".
+                        "$submenu->{StartLine}. ".
+                        "Our want kern is $want_kernver");
+                    $submenu=undef;
+                    next;
+                }
                 my (@missing) =
                     grep { !defined $entry->{$_} } 
                        (defined $xenhopt
@@ -441,6 +449,9 @@ sub setupboot_grub2 ($$$$) {
                 $entry= { Title => $1, StartLine => $., Number => $count };
                 $count++;
             }
+            if (m/^submenu\s+[\'\"](.*)[\'\"].*\{\s*$/) {
+                $submenu={ StartLine =>$.};
+            }
             if (m/^\s*multiboot\s*\/(xen\-[0-9][-+.0-9a-z]*\S+)/) {
                 die unless $entry;
                 $entry->{Hv}= $1;
-- 
1.7.10.4


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