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authorKai Kang <kai.kang@windriver.com>2014-06-20 11:32:11 +0800
committerH. Peter Anvin <hpa@zytor.com>2014-06-19 20:50:57 -0700
commitbc360f8dbdf27bff07bb5db8d0ea9a7b10d8e3d1 (patch)
treeba14eb831d003b38bc8fb20243f216b90757c3dd /utils
parent7798fdc99fc5f16a8a1f3f94bb2428908634d5a6 (diff)
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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>
Diffstat (limited to 'utils')
-rw-r--r--utils/isohybrid.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/utils/isohybrid.c b/utils/isohybrid.c
index 410bb606..23fc6c0b 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]);