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From: urban@cbnewsl.att.com (john.urban)
Newsgroups: comp.unix.questions
Subject: Re: Truncating an existing file (and lockf question)
Message-ID: <1991Apr25.152121.3539@cbnewsl.att.com>
Date: 25 Apr 91 15:21:21 GMT
References: <3172@dsacg3.dsac.dla.mil> <16836@chaph.usc.edu> <1991Apr25.144430.350@wrkgrp.COM>
Distribution: usa
Organization: AT&T Bell Laboratories
Lines: 29

In article <1991Apr25.144430.350@wrkgrp.COM> ets@wrkgrp.COM (Edward T Spire) writes:
>In article <16836@chaph.usc.edu> jeenglis@alcor.usc.edu (Joe English) writes:
>SCO/Unix.  W/ SCO/Unix, chsize() takes the same parms as
>ftruncate() and does the same thing...
>
>========================================================================

chsize is also available for UNIX System V/386 Release 3.2, and UNIX System V/386
Release 4.0.  Little example ...

$ cat C.c
#include <fcntl.h>
main()
{
	int a;
	a = open("/tmp/passwd", O_WRONLY);
	chsize (a, 20L);
	close (a);
}
$ cp /etc/passwd /tmp/passwd
$ cc -O C.c -o C -lx
$ ./C
$ ls -l /tmp/passwd
-r--r--r-- 1 install other  20 Apr 25 11:17 /tmp/passwd


Sincerely,

John Urban