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Date: Mon, 24 Nov 2003 15:33:49 -0700 (MST)
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To: stefan@fafoe.narf.at
From: "M. Warner Losh" <imp@bsdimp.com>
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Subject: Re: [PATCH] libc_r bug: successful close(2) sets errno to ENOTTY
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In message: <20031124182322.GB621@wombat.fafoe.narf.at>
            Stefan Farfeleder <stefan@fafoe.narf.at> writes:
: On Mon, Nov 24, 2003 at 07:05:02PM +0100, boyd, rounin wrote:
: > From: "Jacques A. Vidrine" <nectar@FreeBSD.org>
: > > The application is broken.  You must only check errno if you get an
: > > error indication from the library call.
: > 
: > errno is only meaningful after a syscall error.
: 
: Wrong, counter-example: strtol().

errno is meaningful for syscalls after an error (the original
message).  The fact that other functions also dink with errno is not
relevant to that statement.

Warner