kern/147226: read(fd, buffer, len) returns -1 immediately,
if len >=2147483648
Garrett Cooper
yanefbsd at gmail.com
Mon May 31 23:10:04 UTC 2010
The following reply was made to PR kern/147226; it has been noted by GNATS.
From: Garrett Cooper <yanefbsd at gmail.com>
To: Bruce Cran <bruce at cran.org.uk>
Cc: bug-followup at freebsd.org
Subject: Re: kern/147226: read(fd, buffer, len) returns -1 immediately, if len
>=2147483648
Date: Mon, 31 May 2010 16:06:38 -0700
On Mon, May 31, 2010 at 8:30 AM, Bruce Cran <bruce at cran.org.uk> wrote:
> The following reply was made to PR kern/147226; it has been noted by GNAT=
S.
>
> From: Bruce Cran <bruce at cran.org.uk>
> To: bug-followup at FreeBSD.org, eugene.kharitonov at gmail.com
> Cc:
> Subject: Re: kern/147226: read(fd, buffer, len) returns -1 immediately, =
=A0if
> =A0len >=3D2147483648
> Date: Mon, 31 May 2010 16:21:05 +0100
>
> =A0This actually looks like a 64-bit bug.
> =A0http://opengroup.org/onlinepubs/007908775/xsh/read.html says that up t=
o
> =A0SSIZE_MAX bytes must be accepted, whereas FreeBSD only accepts up to
> =A0INT_MAX bytes.
The point being that SSIZE_MAX is INT_MAX on 32-bit archs and LONG_MAX
on 64-bit archs.
Cheers,
-Garrett
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