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From: jap@convex.cl.msu.edu (Joe Porkka)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: How do you truncate a file?
Message-ID: <1991May6.145512.24786@msuinfo.cl.msu.edu>
Date: 6 May 91 14:55:12 GMT
References: <1991May5.063352.6627@csusac.csus.edu> <dillon.7305@overload.Berkeley.CA.US>
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dillon@overload.Berkeley.CA.US (Matthew Dillon) writes:

>In article <1991May5.063352.6627@csusac.csus.edu> cilibrar@athena.ecs.csus.edu (Rudi Cilibrasi) writes:
>>Suppose that I have a 100-byte file, and I want to get rid of the last
>>ten bytes.  Is there any way to do this other than freading in the

>    Under 2.0 there is a filesystem call, SetFileSize(), that will
>    truncate or extend a file as requested.  Under 1.3 you have to
>    rewrite the file.


The 1.3 FastFileSystem does support the truncate file packet, but
there is no dos.library call for it.

So if you are using 1.3FFS you can send a truncate packet to the
filesystem directly. Check "pickpacket" (on a fish disk I think)
for examples of how to send dos poackets.