From: Jonathan Liu <net147@gmail.com>
To: openembedded-core@lists.openembedded.org
Subject: [PATCH] boot-directdisk: ensure generated MBR disk signature is non-zero
Date: Fri, 27 Sep 2013 11:30:10 +1000 [thread overview]
Message-ID: <1380245410-11696-1-git-send-email-net147@gmail.com> (raw)
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@gmail.com>
---
meta/classes/boot-directdisk.bbclass | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/meta/classes/boot-directdisk.bbclass b/meta/classes/boot-directdisk.bbclass
index 4b9d7bd..8641e85 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
--
1.8.4
reply other threads:[~2013-09-27 1:33 UTC|newest]
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