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From: steven@luke.UUCP (Steven List)
Newsgroups: net.unix-wizards
Subject: Re: truncating a file opened via open()
Message-ID: <217@luke.UUCP>
Date: Thu, 13-Jun-85 15:30:08 EDT
Article-I.D.: luke.217
Posted: Thu Jun 13 15:30:08 1985
Date-Received: Mon, 17-Jun-85 08:23:43 EDT
References: <340@cmu-cs-edu1.ARPA> <786@turtlevax.UUCP>
Reply-To: steven@luke.UUCP (Steven List)
Organization: Uncle Bene's Farm
Lines: 18

In article <786@turtlevax.UUCP> ken@turtlevax.UUCP (Ken Turkowski) writes:
>In article <340@cmu-cs-edu1.ARPA> hua@cmu-cs-edu1.ARPA (Ernest Hua) writes:
>>Does anyone have any idea how to truncate a file at the current point in
>>writing if it is opened by open()?
>
>size = lseek(fd, 0L, 1);	/* tell(fd) */
>ftruncate(fd, size);		/* int fd, size; */
>
>It's yet another undocumented feature on 4.2.

OK, how about System III?  That's my problem.  Someone out there posted
a program that uses ftruncate, and we don't have it.  Solutions are
welcome!
-- 
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