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Date: Fri, 8 Mar 2019 18:14:12 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
Cc: cygwin AT cygwin DOT com
Subject: Re: Logging-in using ssh elevates the user privilege.
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On Mar  9 01:21, Takashi Yano wrote:
> On Fri, 8 Mar 2019 16:56:35 +0100 Corinna Vinschen wrote:
> > > Does this affect to listen() as well?
> >=20
> > No, listen isn't affected.
>=20
> The cause is failure of setsockopt().
> setsockopt() before accept() failed with EALREADY.
>=20
> I looked into fhandler_sock_local.cc.
>=20
> In fhandler_socket_local::af_local_set_no_getpeereid(),
> connect_state() is checked if it is 'unconnected', however,
> it is 'listener' after listen() is called. So it failed.

Yeah, right.  I misunderstood your question, sorry.


Corinna

--=20
Corinna Vinschen
Cygwin Maintainer

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