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From: Tejun Heo <tj@kernel.org>
To: Ondrej Mosnacek <omosnace@redhat.com>
Cc: selinux@vger.kernel.org, Paul Moore <paul@paul-moore.com>,
	Stephen Smalley <sds@tycho.nsa.gov>,
	linux-security-module@vger.kernel.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-fsdevel@vger.kernel.org, cgroups@vger.kernel.org
Subject: Re: [PATCH 0/3] Allow initializing the kernfs node's secctx based on its parent
Date: Fri, 11 Jan 2019 12:50:53 -0800	[thread overview]
Message-ID: <20190111205053.GV2509588@devbig004.ftw2.facebook.com> (raw)
In-Reply-To: <20190109091028.24485-1-omosnace@redhat.com>

Hello,

On Wed, Jan 09, 2019 at 10:10:25AM +0100, Ondrej Mosnacek wrote:
> The main motivation for this change is that the userspace users of cgroupfs
> (which is built on kernfs) expect the usual security context inheritance
> to work under SELinux (see [1] and [2]). This functionality is required for
> better confinement of containers under SELinux.

Can you please go into details on what the expected use cases are like
for cgroupfs?  It shows up as a filesystem but isn't a real one and
has its own permission scheme for delegation and stuff.  If sysfs
hasn't needed selinux support, I'm having a bit of difficulty seeing
why cgroupfs would.

Thanks.

-- 
tejun

  parent reply	other threads:[~2019-01-11 20:52 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-09  9:10 [PATCH 0/3] Allow initializing the kernfs node's secctx based on its parent Ondrej Mosnacek
2019-01-09  9:10 ` [PATCH 1/3] LSM: Add new hook for generic node initialization Ondrej Mosnacek
2019-01-09 14:35   ` Stephen Smalley
2019-01-09 16:06     ` Ondrej Mosnacek
2019-01-09  9:10 ` [PATCH 2/3] selinux: Implement the object_init_security hook Ondrej Mosnacek
2019-01-09 14:40   ` Stephen Smalley
2019-01-11  1:58     ` Paul Moore
2019-01-09  9:10 ` [PATCH 3/3] kernfs: Initialize security of newly created nodes Ondrej Mosnacek
2019-01-09 15:44   ` Stephen Smalley
2019-01-11  2:08     ` Paul Moore
2019-01-11 20:50 ` Tejun Heo [this message]
2019-01-14  9:14   ` [PATCH 0/3] Allow initializing the kernfs node's secctx based on its parent Ondrej Mosnacek
2019-01-14  9:29     ` Ondrej Mosnacek
     [not found]       ` <64977013-e2a5-809d-7a3f-bffbda9276aa@redhat.com>
2019-01-17 16:15         ` Tejun Heo
2019-01-17 16:39           ` Stephen Smalley
2019-01-17 20:30             ` Daniel Walsh
2019-01-17 20:35           ` Daniel Walsh
2019-01-14 15:50     ` Tejun Heo
2019-01-15 14:36   ` Stephen Smalley

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