[PATCH v2] tools: ensure zeroed padding in external FIT images

[Tom Rini]

On Fri, Aug 25, 2023 at 10:10:14AM +0200, Roman Azarenko wrote:

> Padding the header of an external FIT image is achieved by truncating
> the existing temporary FIT file to match the required alignment before
> appending image data. Reusing an existing file this way means that the
> padding will likely contain a portion of the original data not
> overwritten by the new header.
> 
> Zero out any data past the end of the new header, and stop at either
> the end of the desired padding, or the end of the old FIT file,
> whichever comes first.
> 
> Fixes: 7946a814a319 ("Revert "mkimage: fit: Do not tail-pad fitImage with external data"")
> Signed-off-by: Roman Azarenko <roman.azarenko at iopsys.eu>
> Reviewed-by: Simon Glass <sjg at chromium.org>

Applied to u-boot/master, thanks!

-- 
Tom
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