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From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
To: Alex Dubov <alex.dubov@gmail.com>
Cc: linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk,
	corbet@lwn.net, richardcochran@gmail.com
Subject: Re: syscall: introduce sendfd() syscall (v.2)
Date: Fri, 5 Dec 2014 13:22:50 +0000	[thread overview]
Message-ID: <20141205132250.6f2f9ec1@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <1417597255-32530-1-git-send-email-oakad@yahoo.com>


> 2.a. If task A has sufficient capabilities to send signals to task B, then
> task A is already in position to do anything it wants with task B, including
> killing it outright.

Not entirely true.

- We have securirty models like SELinux
- We have namespaces and being able to send an fd between namespaces is
  not quite as flexible as you would make it

I suspect therefore it needs security hooks but otherwise looks more sane
than the current AF_UNIX approach.


  parent reply	other threads:[~2014-12-05 13:23 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-03  9:00 syscall: introduce sendfd() syscall (v.2) Alex Dubov
2014-12-03  9:00 ` [PATCH] " Alex Dubov
     [not found]   ` <CAE2SPAa3FZz6MH41UB-CmruFw0kCTq=KS5MkNXMaiEidpSGkSg@mail.gmail.com>
2014-12-06  3:55     ` Alex Dubov
2014-12-05 13:22 ` One Thousand Gnomes [this message]
2014-12-06  4:13   ` Alex Dubov
2014-12-07  9:55   ` Pavel Machek

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