From:	alane AT wozzle DOT linet DOT org
Subject:	Truncating a file
To:	djgpp AT sun DOT soe DOT clarkson DOT edu
Date:	Thu, 29 Apr 1993 09:46:27 +0000 (EDT)

> I've been investigating the trucate bug I posted on earlier,
> and after looking through a description of the DOS system calls,
> came to the conclusion that the only way you can truncate a file
> is using FCB functions. Can anyone confirm that ?

Uh, well, yes I can confirm that your information is incorrect. I
_know_ this is gonna sound weird, BUT ...

void trunc(int fd, long where)
{
    fseek(fd,where,SEEK_SET);
    write(fd,(void*)0,0);
}
	
this little trick can make for interesting error conditions when
otherwise healthy programs decide to write zero bytes to a file
for some stupid reason :-)

-- 
J. Alan Eldridge (alane AT wozzle DOT linet DOT org)
                 (also on Fidonet: 1:272/38.473)

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