Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/5/84; site edison.UUCP
Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!whuxl!whuxlm!akgua!mcnc!ncsu!uvacs!edison!jso
From: jso@edison.UUCP (John Owens)
Newsgroups: net.unix-wizards
Subject: Re: a question on open() and lseek()
Message-ID: <691@edison.UUCP>
Date: Fri, 18-Apr-86 15:51:34 EST
Article-I.D.: edison.691
Posted: Fri Apr 18 15:51:34 1986
Date-Received: Mon, 21-Apr-86 08:03:17 EST
References: <2594@brl-smoke.ARPA>
Organization: General Electric Company, Charlottesville, VA
Lines: 23

> 	The manual page for "open()" mentions that one of the flags one
> 	can specify with the call is O_APPEND.  [...]  Is
> 	there any reason to use the sequence:
> 		f = open( file, O_WRONLY );
> 		lseek( f, 0, L_XTND );
> 	instead of the single call:
> 		f = open( file, O_WRONLY | O_APPEND );
>
> 						Moises Lejter
> 						moi%brandeis@csnet-relay

Because many versions of UNIX do not support the O_APPEND flag; it's
a fairly recent innovation.  All versions since v7 (at least that I'm
aware of) should support the open/lseek method.


			   John Owens
	    edison!jso%virginia@CSNet-Relay.ARPA
General Electric Company		Phone:	(804) 978-5726
Factory Automation Products Division	Compuserve: 76317,2354
	       houxm!burl!icase!uvacs
...!{	       decvax!mcnc!ncsu!uvacs	}!edison!jso
		 gatech!allegra!uvacs