[Xen-changelog] [xen-unstable] Fix pygrub handling non-default entry

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Miroslav Rezanina <mrezanin@xxxxxxxxxx>
# Date 1358430787 0
# Node ID 414e6d1c9680614e283d48dbe9d91452de8c27b6
# Parent  7359c3122c5d935476ee494706db5249c8df6abc
Fix pygrub handling non-default entry

If we pass 0 as pygrub --entry argument (i.e. we want to boot first item), 
default value is used instead. This is dueto wrong check for range of allowed 
values of index - 0 is index of first item.

Signed-off-by: Miroslav Rezanina <mrezanin@xxxxxxxxxx>
Acked-by: Matt Wilson <msw@xxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Committed-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---


diff -r 7359c3122c5d -r 414e6d1c9680 tools/pygrub/src/pygrub
--- a/tools/pygrub/src/pygrub   Thu Jan 17 13:53:03 2013 +0000
+++ b/tools/pygrub/src/pygrub   Thu Jan 17 13:53:07 2013 +0000
@@ -613,7 +613,7 @@ def run_grub(file, entry, fs, cfg_args):
     # set the entry to boot as requested
     if entry is not None:
         idx = get_entry_idx(g.cf, entry)
-        if idx is not None and idx > 0 and idx < len(g.cf.images):
+        if idx is not None and idx >= 0 and idx < len(g.cf.images):
            sel = idx
 
     if sel == -1:

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