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Date: Tue, 21 Jan 2014 12:21:50 -0600
From: Brooks Davis <brooks@freebsd.org>
To: "KAMADA Ken'ichi" <kamada@nanohz.org>
Subject: Re: Capsicum and sendto(2)
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On Tue, Jan 21, 2014 at 10:45:11PM +0900, KAMADA Ken'ichi wrote:
> Hi,
>=20
> What is the intended behavior of sendto() with non-NULL destination
> when the capability mode is enabled?
>=20
> If the capability mode is *not* enabled, it is checked against
> CAP_CONNECT in kern_sendit() @ uipc_syscall.c.
> This matches the explanation in the rights(4) manual page.
>=20
> However, if the capability mode is enabled, it is always
> rejected in sendit().  Is this intended?

Yes, this is intended.  In capabilty mode all access to namespaces is=20
restricted including the IP address namespace.  You must either connect
your sockets before entereing capabilty mode or use casper to provide
connected sockets.

-- Brooks

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