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Date:	Wed, 5 Jun 2019 20:12:18 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	Petr =?utf-8?B?U2tvxI3DrWs=?= <pskocik AT gmail DOT com>
Cc:	cygwin AT cygwin DOT com
Subject:	Re: bind() behavior inconsistency with Linux and MacOS
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On Jun  5 15:06, Petr Sko=C4=8D=C3=ADk wrote:
> Hi.
>=20
> I don't know if this is technically a bug, but I've noticed that unlike
> on Linux or MacOS, I a cannot bind a unix domain socket in a child
> process and then listen on it in the parent.
>=20
> The bind succeeds but `listen()` in the parent then fails with EINVAL.
>=20
> (The reason I'd like to `bind` in a different process is so I could
> `chdir` to a different directory before `bind`ing and then conceptually
> back without having the `chdir` break file operations in different thread=
s.)
>=20
> Just wanted to let you guys know in case there was an easy fix.

There isn't.  The file information is not shared back into the parent
in the current state of file handling and the state info is important
in the AF_UNIX implementation.  That may change at one point, but that
requires that I get more time to hack on my new AF_UNIX code, which
looks pretty unlikely at the moment.


Corinna

--=20
Corinna Vinschen
Cygwin Maintainer

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