From: "Thiago Lacerda" <thiagotbl@gmail.com>
To: "Stefan Richter" <stefanr@s5r6.in-berlin.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Questions about mmap
Date: Tue, 7 Oct 2008 14:09:18 -0300 [thread overview]
Message-ID: <3fedcc3b0810071009v68e5811ev11e9d512c58d371f@mail.gmail.com> (raw)
In-Reply-To: <48EB8912.7070407@s5r6.in-berlin.de>
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@s5r6.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
next prev parent reply other threads:[~2008-10-07 17:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3fedcc3b0810050621y3f44417ag605ee75dd0389100@mail.gmail.com>
2008-10-05 13:24 ` Thiago Lacerda
2008-10-05 14:01 ` Stefan Richter
[not found] ` <3fedcc3b0810070638u60681b6do8a7e94c4919f4a40@mail.gmail.com>
2008-10-07 13:40 ` Thiago Lacerda
2008-10-07 16:02 ` Nick Piggin
2008-10-07 16:06 ` Stefan Richter
2008-10-07 17:09 ` Thiago Lacerda [this message]
2008-10-08 4:45 ` Nick Piggin
2008-10-07 20:43 ` linux-os (Dick Johnson)
2008-10-07 20:56 ` Chris Friesen
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