linux-kernel - Re: [PATCH 1/4] drivers/net/enic: decrement sizeof size in strncmp

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID:  <4AFBDE02.20806@web.de>
Date:	Thu, 12 Nov 2009 11:05:54 +0100
From:	Jörg-Volker Peetz <jvpeetz@....de>
To:	linux-kernel@...r.kernel.org
Cc:	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject:  Re: [PATCH 1/4] drivers/net/enic: decrement sizeof size in strncmp

Julia Lawall wrote:
<snip>
> strncmp(foo, abc, 
> - sizeof(abc)
> + sizeof(abc)-1
>  )
<snip>
> -	if (strncmp(fw_info->hw_version, "A1", sizeof("A1")) == 0)
> +	if (strncmp(fw_info->hw_version, "A1", sizeof("A1") - 1) == 0)
>  		*hw_ver = VNIC_DEV_HW_VER_A1;
> -	else if (strncmp(fw_info->hw_version, "A2", sizeof("A2")) == 0)
> +	else if (strncmp(fw_info->hw_version, "A2", sizeof("A2") - 1) == 0)
<snip>
Why not use strlen(abc) instead of sizeof(abc) - 1 ?
-- 
Regards,
Jörg-Volker.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/