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Upstream-Status: Backport
Signed-off-by: Kai Kang <kai.kang@windriver.com>
From bc360f8dbdf27bff07bb5db8d0ea9a7b10d8e3d1 Mon Sep 17 00:00:00 2001
From: Kai Kang <kai.kang@windriver.com>
Date: Fri, 20 Jun 2014 11:32:11 +0800
Subject: [PATCH 1/2] isohybrid: fix overflow on 32 bit system
When call isohybrid with option '-u', it overflows on a 32 bits host. It
seeks to 512 bytes before the end of the image to install gpt header. If
the size of image is larger than LONG_MAX, it overflows fseek() and
cause error:
isohybrid: image-x86-64-20140505110100.iso: seek error - 8: Invalid argument
Replace fseek with fseeko to fix this issue.
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---
utils/isohybrid.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/utils/isohybrid.c b/utils/isohybrid.c
index 410bb60..23fc6c0 100644
--- a/utils/isohybrid.c
+++ b/utils/isohybrid.c
@@ -1126,7 +1126,7 @@ main(int argc, char *argv[])
* end of the image
*/
- if (fseek(fp, (isostat.st_size + padding) - orig_gpt_size - 512,
+ if (fseeko(fp, (isostat.st_size + padding) - orig_gpt_size - 512,
SEEK_SET))
err(1, "%s: seek error - 8", argv[0]);
--
1.9.1
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