From: Tom Rini <trini@konsulko.com>
To: u-boot@lists.denx.de
Subject: [PATCH] Fix squashfs failing to load sparse files
Date: Wed, 20 Jan 2021 16:46:44 -0500 [thread overview]
Message-ID: <20210120214644.GD9782@bill-the-cat> (raw)
In-Reply-To: <d1ee56b7-0e73-145d-6b8f-d208d0557938@snapit.group>
On Mon, Nov 23, 2020 at 03:40:03PM +1300, Campbell Suter wrote:
> SquashFS supports sprase blocks in files - that is, if a given block is
> composed only of zeros, it's not written to the output file to save
> space and it's on-disk length field is set to zero to indicate that.
>
> Previously the squashfs driver did not recognise that, and would attempt
> to read and decompress a zero-sized block, which obviously failed.
>
> The following command may be used to create a file for testing:
>
> cat <(dd if=/dev/urandom of=/dev/stdout bs=1M count=1) \
> <(dd if=/dev/zero of=/dev/stdout bs=1M count=1) \
> <(dd if=/dev/urandom of=/dev/stdout bs=1k count=200) >test_file
>
> Signed-off-by: Campbell Suter <campbell@snapit.group>
Applied to u-boot/master, thanks!
--
Tom
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prev parent reply other threads:[~2021-01-20 21:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-23 2:40 [PATCH] Fix squashfs failing to load sparse files Campbell Suter
2021-01-20 21:46 ` Tom Rini [this message]
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