Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!zephyr.ens.tek.com!tektronix!percy!nosun!cvedc!gssc!gened
From: gened@gssc.UUCP (Gene Daniel)
Newsgroups: alt.sources
Subject: Re: elvis on a PC - Quick-C
Message-ID: <6315@gssc.UUCP>
Date: 31 Aug 90 08:01:59 GMT
References: <1990Aug28.211400.14555@cbnewsc.att.com> <24466@fmsrl7.UUCP> <6887@vax1.acs.udel.EDU>
Distribution: usa
Organization: Graphic Software Systems, Inc. Beaverton, Or.
Lines: 43

In article <6887@vax1.acs.udel.EDU> bruschke@vax1.udel.edu (Michiel Bruschke) writes:
>
>In article 2160 of alt.sources Marvin Kraska writes:
>
>>    However, I have noticed that on the PC, lost clusters are reported
>>by "chkdsk" on the drive that the temporary file is placed.  Sure
>>enough, the recovered file is elvis's temp.  I glanced at the tmp.c
>>code, and didn't see anything obvious. 
>
>I noticed exactly the same thing on my system. I compiled elvis
>using Quick-C. Elvis copies the tmp file to the new file, but
>then somehow improperly deletes the tmp files. It seems to do
>this with all tmp files it opens, cut buffers as well as regular
>tmp file. Will take a closer look at source to see if I can figure 
>it out (probably over weekend).
>
>So if you use elvis be sure to run chkdsk /f afterwards.
>
>Mike Bruschke

I also found this. I found it both with MSC and with Zortech so it wasn't
the compiler.  Some time back I discovered that deleting an open file
causes unallocated clusters. This is apparently the cause of the lost
clusters from Elvis.

I was able to fix it by placeing the following two lines just before 
the rename() call in the routine cutswitch() in the file cut.c:

		close(tmpfd);
		tmpfd = -1;

The only other access to this file is after it is renamed to a cut
buffer file and this is done through a dup'ed file descriptor. I have
sent this information to Steve Kirkendall, the author of Elvis, so 
the "official" patch should soon be on it's way. I have been using
Elvis with this fix and named cut buffers between files seem to be
working alright and no more unallocated clusters.

-- 
Gene Daniel			   | gened@gss.com
Graphic Software Systems, Inc.     |       or
P.O. Box 4900                      | ..!tektronix!sequent!gssc!gened
Beaverton, Oregon 97005-7161       |