Date: Thu, 15 Feb 2001 22:41:55 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: rafael AT geninfor DOT com
Message-Id: <1438-Thu15Feb2001224154+0200-eliz@is.elta.co.il>
X-Mailer: Emacs 20.6 (via feedmail 8.3.emacs20_6 I) and Blat ver 1.8.6
CC: djgpp AT delorie DOT com
In-reply-to: <3a8bc878@filemon.telecable.es> (rafael@geninfor.com)
Subject: Re: reading a currently writting file
References:  <3a8bc878 AT filemon DOT telecable DOT es>
Reply-To: djgpp AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: djgpp AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

> From: "Rafael Garcia" <rafael AT geninfor DOT com>
> Newsgroups: comp.os.msdos.djgpp
> Date: Thu, 15 Feb 2001 13:14:18 +0100
> 
> I have a program that write some information about its work in a LOG file.
> When it ends execution I can open it to know what was happening.
> 
> But it would be nice if I could read it meanwhile running. If I try to open
> the file for reading from another Windows DOS box, fopen() fails.

You should be able to specify appropriate file-sharing flags using the
`__djgpp_share_flags' variable, which is documented in the library
reference.  `fopen' pays attention to this variable when it calls the
OS function to open the file.