From: Alex Riesen <alexander.riesen@synopsys.COM>
To: Patrick Mochel <mochel@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.5.86+: sizes of almost all files in sysfs are 4k?
Date: Tue, 13 May 2003 19:05:36 +0200 [thread overview]
Message-ID: <20030513170536.GA4580@Synopsys.COM> (raw)
In-Reply-To: <Pine.LNX.4.44.0305130954390.9816-100000@cherise>
Patrick Mochel, Tue, May 13, 2003 18:58:34 +0200:
> > If the size is not simple/possible to calculate, maybe using 0
> > would be an option for the cases where the size doesn't carry
> > any information (like in procfs)?
>
> It was 0 before, which works fine for cat(1). By hardcoding the size, some
> bugs are exposed, since the size is reset for some reason when you try to
> open the file for writing, even if open(2) returns an error.
>
> Ideally, we should be calculating the size, and using that. However, that
> would involve keeping type information about the file around, which we
> don't currently do. Research/patches in this area would be greatly
> appreciated.
we could also pretend the files are sparse, and return zero-filled data.
Though, i fear, this will also confuse something.
-alex
prev parent reply other threads:[~2003-05-13 16:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-23 8:27 2.5.86+: sizes of almost all files in sysfs are 4k? Alex Riesen
2003-05-13 16:58 ` Patrick Mochel
2003-05-13 17:05 ` Alex Riesen [this message]
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