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From: moss@cs.umass.edu (Eliot Moss)
Newsgroups: comp.unix.wizards
Subject: Re: Reserving Space on Disk
Message-ID: <MOSS.90Jul15190502@ibis.cs.umass.edu>
Date: 15 Jul 90 23:05:02 GMT
References: <563@hhb.UUCP> <1990Jul15.211608.26025@virtech.uucp>
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Organization: Dept of Comp and Info Sci, Univ of Mass (Amherst)
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In-reply-to: cpcahil@virtech.uucp's message of 15 Jul 90 21:16:08 GMT

I don't think tromping through 4 megabytes of newly allocated address space
will be much of a winner myself. I'd do something more along these lines
(error checking omitted):

char buf[ONE_K];
int i;

for (i = 0; i < FOUR_K; ++i)
  write (fd, buf, ONE_K);

You might want to tune the size of buf up larger than what I have, but still
somewhat "reasonable". Something between the size of a track and a cylinder on
the disk might work reasonably well, say 64K or 128K. Enjoy!		Eliot
--

		J. Eliot B. Moss, Assistant Professor
		Department of Computer and Information Science
		Lederle Graduate Research Center
		University of Massachusetts
		Amherst, MA  01003
		(413) 545-4206; Moss@cs.umass.edu