Re: blockdev.c: getsize(): signed args, error checking

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On Fri, Oct 19, 2007 at 01:39:38PM +0200, Stefan Krah wrote:
> in getsize() the BLKGETSIZE and BLKGETSIZE64 ioctls are called
> with signed args, see the patch below.

 Ah.. I've already fixed this bug in other place in blockdev
 (--getsize, --getsize64).

 I see same signed args in fdisk/disksize.c :-( We need to cleanup this
 code, remove all getsize() versions and create libs/blkdevsize.c
 (see TODO).

> Since the EFBIG change in getsize() sz might contain garbage, so there
> should be additional error checks, something like (yes, this is ugly):

 I think you needn't extra check, you can zeroize "sz" when the first
 ioctl() returns an error.


    Karel

-- 
 Karel Zak  <kzak@xxxxxxxxxx>
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