linux-kernel - Re: Questions about mmap

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Message-ID: <3fedcc3b0810071009v68e5811ev11e9d512c58d371f@mail.gmail.com>
Date:	Tue, 7 Oct 2008 14:09:18 -0300
From:	"Thiago Lacerda" <thiagotbl@...il.com>
To:	"Stefan Richter" <stefanr@...6.in-berlin.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Questions about mmap

Thank you people.

When I try to dereference those pointers in user space I get a segfault :(

On Tue, Oct 7, 2008 at 1:06 PM, Stefan Richter
<stefanr@...6.in-berlin.de> wrote:
> Thiago Lacerda wrote:
>> I'm trying to do like this:
>>
>> //Code of the char device
>> unsigned int **test;
>> static int device_mmap(struct file *filp, struct vm_area_struct *vma) {
> [...]
>> could you tell me what am I doing wrong?
>
> I can't; I never implemented a mmap file operation myself.
> --
> Stefan Richter
> -=====-==--- =-=- --===
> http://arcgraph.de/sr/
>



-- 
Thiago de Barros Lacerda
Computer Science Undergraduate Student - CIn/UFPE - 2004.2
Researcher/Software Developer - GPRT - Networking and
Telecommunications Research Group
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