Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!gem.mps.ohio-state.edu!mips!rogerk
From: rogerk@mips.COM (Roger B.A. Klorese)
Newsgroups: comp.sys.mips
Subject: Re: Use of mmap()
Message-ID: <32198@servitude.mips.COM>
Date: 27 Nov 89 16:19:20 GMT
References: <48700@bbn.COM>
Reply-To: rogerk@mips.COM (Roger B.A. Klorese)
Organization: MIPS Computer Systems, Sunnyvale, CA
Lines: 13

In article <48700@bbn.COM> ajc@bbn.com (Anthony J. Courtemanche) writes:
>mmap() seems like what I want, but I do not know what to pass
>as the file descriptor argument that is associated with the kernel
>memory that I want to map into the user's address space.  If anyone
>knows how to make a "file descriptor associated with a memory device"
>(words taken from the mmap() man page), please let me know.

It's the fd on which the user has opened /dev/your-device.
-- 
ROGER B.A. KLORESE      MIPS Computer Systems, Inc.      phone: +1 408 720-2939
928 E. Arques Ave.  Sunnyvale, CA  94086                        rogerk@mips.COM
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"I want to live where it's always Saturday."  -- Guadalcanal Diary