Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!haven!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.bugs.sys5
Subject: Re: AT&T system V fdopen mode checking
Message-ID: <11723@smoke.BRL.MIL>
Date: 2 Dec 89 00:59:46 GMT
References: <713@mbf.UUCP>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 10

In article <713@mbf.UUCP> hae@mbf.UUCP (Hae Hirdler) writes:
-The man page on the fdopen states that "the type of the stream must 
-agree with the mode of the open file."

I believe by "mode" they mean "file access permissions".

-For example, fd= open(filename, O_RDONLY); fptr= fdopen(filename, "w")
-will return a NON_NULL fptr value instead of NULL.  

O_RDONLY has nothing to do with the file.  It is just a parameter to open().