From: Ulrich Drepper <drepper@gmail.com>
To: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: Fw: sigwait() breaks when straced
Date: Mon, 1 Aug 2005 00:09:53 -0700 [thread overview]
Message-ID: <a36005b50508010009453fdfb7@mail.gmail.com> (raw)
In-Reply-To: <20050801000120.1D00F180EC0@magilla.sf.frob.com>
On 7/31/05, Roland McGrath <roland@redhat.com> wrote:
> However, there is in fact no bug here. The test program is just wrong.
> sigwait returns zero or an error number, as POSIX specifies.
No question, no error is detected incorrectly.
But sigwait is not a function specified with an EINTR error number.
As I said before, this does not mean that EINTR cannot be returned.
But it will create havoc among programs and it causes undefined
behavior wrt to SA_RESTART. I think it is best to not have any
function for which EINTR is not a defined error to fail this way.
This causes the least amount of surprises and unnecessary loops around
the userlevel call sites.
next prev parent reply other threads:[~2005-08-01 7:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20050730170049.6df9e39f.akpm@osdl.org>
2005-08-01 0:01 ` Fw: sigwait() breaks when straced Roland McGrath
2005-08-01 0:12 ` Dave Airlie
2005-08-01 16:25 ` Jesper Juhl
2005-08-01 19:20 ` Ulrich Drepper
2005-08-01 7:09 ` Ulrich Drepper [this message]
2005-08-01 7:57 ` Roland McGrath
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