From: Brian Gerst <bgerst@quark.didntduck.org>
To: Timo Benk <t_benk@web.de>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: allocate memory in userspace
Date: Tue, 02 Jul 2002 08:19:30 -0400 [thread overview]
Message-ID: <3D219A52.1060008@quark.didntduck.org> (raw)
In-Reply-To: <20020701172659.GA4431@toshiba>
Timo Benk wrote:
> Hi,
>
> I am a kernel newbie and i am writing a module. I
> need to allocate some memory in userspace because
> i want to access syscalls like open(), lstat() etc.
> I need to call these methods in the kernel, and in
> my special case there is no other way, but i
> do not want to reimplement all the syscalls.
What are you trying to do with this module? If you are needing to use
syscalls like open(), you are probably trying to do something that is
forbidden in kernel space. For example, trying to read a configuration
file.
Recommended reading:
http://www.linux.org.uk/~ajh/ols2002_proceedings.pdf.gz
The chapter named "How NOT to write kernel drivers", especially sections
7 and 8.
--
Brian Gerst
next prev parent reply other threads:[~2002-07-02 12:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-01 17:26 Timo Benk
2002-07-01 17:49 ` Erik Andersen
2002-07-02 8:37 ` William Lee Irwin III
2002-07-02 8:44 ` William Lee Irwin III
2002-07-02 9:00 ` Erik Andersen
2002-07-01 18:39 ` Calin A. Culianu
2002-07-02 7:51 ` allocate memory in userspace (Answer) Timo Benk
2002-07-02 10:24 ` Timo Benk
2002-07-02 12:19 ` Brian Gerst [this message]
[not found] <20020701172659.GA4431@toshiba.suse.lists.linux.kernel>
2002-07-02 9:30 ` allocate memory in userspace Andi Kleen
2002-07-02 10:21 ` Timo Benk
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