linux-kernel - Re: [PATCH V4] binder: ipc namespace support for android binder

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Message-Id: <20181115143349.44e1942213b61a4818bcbf02@linux-foundation.org>
Date:   Thu, 15 Nov 2018 14:33:49 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     chouryzhou (周威) 
        <chouryzhou@...cent.com>
Cc:     "tkjos@...gle.com" <tkjos@...gle.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "arve@...roid.com" <arve@...roid.com>,
        "tkjos@...roid.com" <tkjos@...roid.com>,
        "dave@...olabs.net" <dave@...olabs.net>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V4] binder: ipc namespace support for android binder

On Mon, 12 Nov 2018 09:37:51 +0000 chouryzhou(周威) <chouryzhou@...cent.com> wrote:

> Currently android's binder is not isolated by ipc namespace. Since binder 
> is a form of IPC and therefore should be tied to ipc namespace. With this 
> patch, we can run multiple instances of  android container on one host.
> 
> This patch move "binder_procs" and "binder_context" into ipc_namespace,
> driver will find the context from it when opening. For debugfs, binder_proc
> is namespace-aware, but not for binder dead nodes, binder_stats and 
> binder_transaction_log_entry (we added ipc inum to trace it).
> 
> ...
>
>  drivers/android/binder.c      | 133 ++++++++++++++++++++++++++++++++----------
>  include/linux/ipc_namespace.h |  15 +++++
>  ipc/namespace.c               |  10 +++-
>  3 files changed, 125 insertions(+), 33 deletions(-)

Well, it's mainly an android patch so I suggest this be taken via the
android tree.

Acked-by: Andrew Morton <akpm@...ux-foundation.org>