Re: Recv() to a mmap'ed file?

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From
Alfred Perlstein <bright@mu.org>
Date
12 Mar 2002 13:49:00
Subject
Re: Recv() to a mmap'ed file?
Message-ID
20020312214851.GK92565@elvis.mu.org

In reply to
References to

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* Farooq Mela <fmela0@sm.socccd.cc.ca.us> [020312 13:01] wrote:
>
> Rather than the usual recv() to a fixed size buffer, write() to the
> file descriptor, loop, etc. However when I try to do this recv gives
> me back an EFAULT (bad address). Is there a limitation of the
> architecture which does not allows us to recv() to an mmap'ed area of
> a file, or is it just something which hasn't been implemented?

You may not extend a file using mmap(2), you must use ftuncate(2)
or write(2).

-Alfred

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