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

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From
Farooq Mela <fmela0@sm.socccd.cc.ca.us>
Date
12 Mar 2002 21:56:31
Subject
Re: Recv() to a mmap'ed file?
Message-ID
3C8EEA50.C3E17315@sm.socccd.cc.ca.us


[ Hide this part ]
Alfred Perlstein wrote:
>
> * 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

I am aware of this, this is why I stated:

> /* file_fd points to a regular file which is filled with SIZE nul
> bytes */

The file is already the required size.

--
Farooq <Farooq@WhatTheFuck.Com>

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