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From: deborah@microunity.com (Deborah Gronke Bennett)
Subject: Re: Simple BSD code acting funny in FreeBSD (correctly in Linux)
Message-ID: <DD2CyK.A1x@microunity.com>
Sender: usenet@microunity.com (news id)
Organization: MicroUnity Systems Engineering, Inc.
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References: <DD06CB.It1@midway.uchicago.edu> <807927921.19978@pencotts.demon.co.uk>
Date: Wed, 9 Aug 1995 21:56:44 GMT
Lines: 29
Andrew Gordon <andrew.gordon@net-tel.co.uk> writes:
>The problem is that FreeBSD allows files larger than 4Gb, hence that
>sbuf.st_size is not a long but a quad (64-bit) integer. Your "%7d" format is
>only using up the first 32 bits and so the rest of the arguments get out of
>step.
>Your printf should look more like:
> printf("%7qd %.12s ", sbuf.st_size, ctime(&sbuf.st_mtime)+4);
> ^^
>Presumably linux still has the 32-bit file size limit and so your program works
>OK there.
I had a similar problem when I ported rdist 6.1.0 to FreeBSD.
For any varargs functions (like *printf) you have to decide whether
to stick to 4GB file sizes (in which case you cast the target (st_size)
to int or long), or use the perhaps not-portable %q option to
printf. I chose to cast the target sizes instead.
(For anyone interested in the rdist changes for FreeBSD,
they are available at ftp://ftp.dataplex.net/pub/FreeBSD/contrib/rdist
for the time being. I have submitted them to usc as well.)
--
Deborah Gronke Bennett (WD5HJH) kernel and device drivers engineer
deborah@microunity.com (408)-734-8100
MicroUnity Systems Eng., 255 Caspian Drive, Sunnyvale, CA 94089-1015 USA
"Pick yourself up, dust yourself off, start all over again" Ginger Rogers in "Swingtime"