From a6954d648bf6bb02ab5061f47392dd703a7261fc Mon Sep 17 00:00:00 2001
From: "kfraser@localhost.localdomain" <kfraser@localhost.localdomain>
Date: Wed, 11 Apr 2007 15:27:14 +0100
Subject: [PATCH] pygrub: Support GPT (GUID Partition Table) as used by EFI.
 Signed-off-by: Shinya Kuwamura <kuwa@jp.fujitsu.com> Signed-off-by: Tomohiro
 Takahashi <takatom@jp.fujitsu.com>

---
 tools/pygrub/src/pygrub | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/pygrub/src/pygrub b/tools/pygrub/src/pygrub
index 8f4e3473f7..99c2debd40 100644
--- a/tools/pygrub/src/pygrub
+++ b/tools/pygrub/src/pygrub
@@ -59,6 +59,13 @@ def get_active_partition(file):
         if struct.unpack("<c", buf[poff:poff+1]) == ('\x80',):
             return buf[poff:poff+16]
 
+        # type=0xee: GUID partition table
+        # XXX assume the first partition is active
+        if struct.unpack("<c", buf[poff+4:poff+5]) == ('\xee',):
+            os.lseek(fd, 0x400, 0)
+            buf = os.read(fd, 512)
+            return buf[24:40] # XXX buf[32:40]
+
     # if there's not a partition marked as active, fall back to
     # the first partition
     return buf[446:446+16]
-- 
2.30.2