From: "Richard B. Johnson" <root@chaos.analogic.com>
To: prasanna panchamukhi <pprasanna_2000@yahoo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Magic numner of /dev/mem
Date: Tue, 8 Apr 2003 09:58:09 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.53.0304080952100.23087@chaos> (raw)
In-Reply-To: <20030408133514.12649.qmail@web21404.mail.yahoo.com>
On Tue, 8 Apr 2003, prasanna panchamukhi wrote:
> Hi,
>
> I have a few questions on /dev/mem
>
> 1.Is the magic no of /dev/mem is static or dynamic for
> a specific architecture.
> 2.If it is static/Dynamic why?
> 3. How it is determined?
> 3.Where do we use it?
>
> Thanks in advance...
>
> Regards
> Prasanna S P.
/dev/mem is not a "file" so it doesn't have a magic number. It
is a device that creates a "window" into all the mapped memory
pages in the system.
If you were to read /dev/mem (just do `strings /dev/mem` from
the root account), you will read the contents of physical memory.
Cheers,
Dick Johnson
Penguin : Linux version 2.4.20 on an i686 machine (797.90 BogoMips).
Why is the government concerned about the lunatic fringe? Think about it.
prev parent reply other threads:[~2003-04-08 13:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-08 13:35 prasanna panchamukhi
2003-04-08 13:58 ` Richard B. Johnson [this message]
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