[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v2 08/22] nbd/client: Drop pointless buf variabl
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH v2 08/22] nbd/client: Drop pointless buf variable |
Date: |
Sat, 5 Jan 2019 07:54:18 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 |
On 12/15/18 7:53 AM, Eric Blake wrote:
> There's no need to read into a temporary buffer (oversized
> since commit 7d3123e1) followed by a byteswap into a uint64_t
> to check for a magic number via memcmp(), when the code
> immediately below demonstrates reading into the uint64_t then
> byteswapping in place and checking for a magic number via
> integer math. What's more, having a different error message
> when the server's first reply byte is 0 is unusual - it's no
> different from any other wrong magic number, and we already
> detected short reads. That whole strlen() issue has been
> present and useless since commit 1d45f8b5 in 2010; perhaps it
> was leftover debugging (since the correct magic number happens
> to be ASCII)? Make the error messages more consistent and
> detailed while touching things.
>
> Signed-off-by: Eric Blake <address@hidden>
> Reviewed-by: Richard W.M. Jones <address@hidden>
> Reviewed-by: Vladimir Sementsov-Ogievskiy <address@hidden>
I'm queuing 1, 2, 5, 6, and 8 for my next NBD pull request, and will
respin the rest of the series to incorporate review comments.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
signature.asc
Description: OpenPGP digital signature
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- Re: [Qemu-devel] [PATCH v2 08/22] nbd/client: Drop pointless buf variable,
Eric Blake <=