[3954] in arla-drinkers
Re: xfs behaviour on OpenBSD
daemon@ATHENA.MIT.EDU (=?iso-8859-1?q?Love_H=F6rnquist_=C)
Thu Jun 15 08:31:00 2006
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To: Kristaps Johnson <kristaps@gradient-enterprises.com>
Subject: Re: xfs behaviour on OpenBSD
References: <Pine.LNX.4.64.0606150720530.5425@cycle0.hinterlands.net>
From: =?iso-8859-1?q?Love_H=F6rnquist_=C5strand?= <lha@kth.se>
Date: Thu, 15 Jun 2006 08:30:39 -0400
In-Reply-To: <Pine.LNX.4.64.0606150720530.5425@cycle0.hinterlands.net>
(Kristaps
Johnson's message of "Thu, 15 Jun 2006 07:29:53 -0400 (EDT)")
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Kristaps Johnson <kristaps@gradient-enterprises.com> writes:
> Hello everybody. I wonder if somebody can shed some light on strange
> behahiour (or sloppy thinking on my part).
>
> If I mount_xfs on OpenBSD (3.9), and run two versions of a programme, one
> that read(2)s and one that fread(3)s, the read returns end-of-file while
> the fread returns correct values.
nnpfs dev will only return untruncted messages, you need to pass in a
larger buffer.
fread behavies diffrently because its buffered in libc, ktrace and you'll
see that the read(2) is larger then 1 byte.
Love
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