[oe-commits] Jonathan Liu : boot-directdisk: ensure generated MBR disk signature is non-zero

[git at git.openembedded.org]

Module: openembedded-core.git
Branch: master
Commit: b6cafb1fcd6c168f8f4a4d2d5c74f3b425f156f3
URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=b6cafb1fcd6c168f8f4a4d2d5c74f3b425f156f3

Author: Jonathan Liu <net147 at gmail.com>
Date:   Fri Sep 27 01:30:10 2013 +0000

boot-directdisk: ensure generated MBR disk signature is non-zero

A zero MBR disk signature is generally seen as no signature and
another partitioning program might install a new signature.

Signed-off-by: Jonathan Liu <net147 at gmail.com>
Signed-off-by: Saul Wold <sgw at linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>

---

 meta/classes/boot-directdisk.bbclass |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/meta/classes/boot-directdisk.bbclass b/meta/classes/boot-directdisk.bbclass
index c58c6f0..0f64b44 100644
--- a/meta/classes/boot-directdisk.bbclass
+++ b/meta/classes/boot-directdisk.bbclass
@@ -148,7 +148,11 @@ python do_bootdirectdisk() {
 def generate_disk_signature():
     import uuid
 
-    return str(uuid.uuid4())[:8]
+    while True:
+        signature = str(uuid.uuid4())[:8]
+
+        if signature != '00000000':
+            return signature
 
 def validate_disk_signature(d):
     import re