linux-kernel - Re: shared memory

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Message-ID: <20071216223014.GA13628@bit.office.eurotux.com>
Date:	Sun, 16 Dec 2007 22:30:14 +0000
From:	Luciano Rocha <luciano@...otux.com>
To:	Rafael Sisto <rafael.sisto@...il.com>
Cc:	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: shared memory

On Sun, Dec 16, 2007 at 05:01:17PM -0300, Rafael Sisto wrote:
> Thank you for the quick answer, but It's a college project, and I must
> share user level memory. I also must build my own system calls...
> But I can look what is already done and make something similar. Do you
> think shmget would do? Does it share user level memory?

Yes. They both do, but the Posix one is based on a ramfs or tmpfs on
/dev/shm and shared mmaps. I think analyzing the SysV version will be
better for your needs.

shmget: create the memory region
shmat: attach the memory region to this process.

-- 
Luciano Rocha <luciano@...otux.com>
Eurotux Informática, S.A. <http://www.eurotux.com/>

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