Re: [PATCH v2 13/14] daemon: use select() instead of poll()

From: Erik Faye-Lund <kusmabite@googlemail.com>
Date: Jan 16, 2010, 10:59 UTC
Message-ID: <40aa078e1001160259h7f82b702u405a2bed515cfd81@mail.gmail.com>
In-Reply-To: <201001161144.55263.j6t@kdbg.org>

On Sat, Jan 16, 2010 at 11:44 AM, Johannes Sixt <j6t@kdbg.org> wrote:

Show 13 quoted lines

> On Samstag, 16. Januar 2010, Erik Faye-Lund wrote:
>> On Sat, Jan 16, 2010 at 9:08 AM, Johannes Sixt <j6t@kdbg.org> wrote:
>> > Wouldn't it be possible to call getsockopt(), and if it returns ENOTSOCK
>> > (WSAENOTSOCK), then it is a pipe?
>>
>> I read reports that this didn't work in Wine. Not that I care that
>> much about Wine.
>
> What does it mean that "it does not work"? Is it that it does not return
> ENOTSOCK, so that we mistake pipes as sockets?
>
> -- Hannes
>

Yes, according to the gnulib sources[1], getsockopt returns 0 for pipes.

[1]: http://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=blob;f=lib/poll.c;h=90d99d92dca5d7ce2f31097e4b8fc06a83aae245;hb=HEAD#l80

-- 
Erik "kusma" Faye-Lund