linux-kernel - Re: [PATCH 4/6] xfs: use memdup

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] [day] [month] [year] [list]

Message-ID: <49DD44B5.9040702@cn.fujitsu.com>
Date:	Thu, 09 Apr 2009 08:43:33 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Roland Dreier <rdreier@...co.com>
CC:	Christoph Hellwig <hch@...radead.org>, felixb@....com,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, xfs@....sgi.com
Subject: Re: [PATCH 4/6] xfs: use memdup_user()

Roland Dreier wrote:
>  > wouldn't NULL be a better error return for this kind of interface,
>  > matching kmalloc?
> 
> I guess returning an error code from memdup_user() lets callers
> distinguish between ENOMEM and EFAULT.  Not sure if that's important or
> not but there probably are at least some sites that care.
> 

Right, and this API is simlilar to strndup_user().
--
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/