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To: M C Wong <mcw@hpato.aus.hp.com>
Cc: questions@freebsd.org
Subject: Re: conditionally optional parameter in C function declartion 
In-Reply-To: Your message of "Tue, 03 Sep 1996 08:38:59 PDT."
             <199609030039.AA027771143@hpcsos.col.hp.com> 
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Date: Tue, 3 Sep 1996 08:00:11 PDT
From: "Marty Leisner" <leisner@sdsp.mc.xerox.com>
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> Hi,
>     Maybe I am being paranoia, but different systems have
> different declaration for open(2):
> 
> eg on HPUX:
> #include <fcntl.h>
> 
> int open( const char *path, int oflag, ...  /* mode_t mode */);
> 
> eg on FreeBSD:
> int open(const char *path, int flags, mode_t mode)
> 
> Which is more POSIX than another ?
> 
>

Neither...this is a problem (we can't specify "optional parameters", but
varargs parameters).

Maybe the best way is to use creat for three arg open, and 
open for two arg open...(don't give open a third arg).


-- 
marty
leisner@sdsp.mc.xerox.com  
Member of the League for Programming Freedom