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From: freedman@mips2.cr.bull.com (Jerome Freedman)
Newsgroups: comp.unix.questions
Subject: uses of mmap
Message-ID: <1990Sep4.123135.10479@mips2.cr.bull.com>
Date: 4 Sep 90 12:31:35 GMT
Organization: Bull HN Information Systems Inc.
Lines: 17


  I have been looking at mmap (for work I did last year it
would have been GREAT - i think). I am not sure I understand
how it is used - I am looking at the man page (MIPS RiscOs).

"mmap maps pages of memory from the memory device associated
with file fd into the address space of the calling process.."

 Now , If I want to mmap a file it looks as though I have to
open the device on which the file resides to get the fd 
mentioned in the man pages and somehow get the offset of
the file I want to map - is this a correct interpretation
it all seems murky. Can some one post me an example of code
using mmap?


                              Jerry Freedman,Jr