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From: "Ahmed S. Darwish" <darwish.07@gmail.com>
To: Casey Schaufler <casey@schaufler-ca.com>
Cc: LSM <linux-security-module@vger.kernel.org>,
	James Morris <jmorris@namei.org>,
	LKM <linux-kernel@vger.kernel.org>,
	SE Linux <selinux@tycho.nsa.gov>,
	John Johansen <john.johansen@canonical.com>,
	Kees Cook <keescook@chromium.org>,
	Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
	Paul Moore <paul@paul-moore.com>,
	Stephen Smalley <sds@tycho.nsa.gov>,
	"Schaufler, Casey" <casey.schaufler@intel.com>
Subject: Re: [PATCH 01/10] procfs: add smack subdir to attrs
Date: Tue, 11 Sep 2018 23:45:38 +0000
Message-ID: <20180911234538.GB12337@darwi-kernel> (raw)
In-Reply-To: <c43599b8-20f6-0cc6-28d7-abff4c0d0a0d@schaufler-ca.com>

On Tue, Sep 11, 2018 at 09:41:32AM -0700, Casey Schaufler wrote:
> Back in 2007 I made what turned out to be a rather serious
> mistake in the implementation of the Smack security module.
> The SELinux module used an interface in /proc to manipulate
> the security context on processes. Rather than use a similar
> interface, I used the same interface. The AppArmor team did
> likewise. Now /proc/.../attr/current will tell you the
> security "context" of the process, but it will be different
> depending on the security module you're using.
>
> This patch provides a subdirectory in /proc/.../attr for
> Smack. Smack user space can use the "current" file in
> this subdirectory and never have to worry about getting
> SELinux attributes by mistake. Programs that use the
> old interface will continue to work (or fail, as the case
> may be) as before.
>

Did downstream distributions already merge the stacking patches on
their own?

Got a little-bit confused after reading the log above; I already see
this in in Ubuntu 18.04.1 LTS, v4.15.0-33-generic:

    $ tree /proc/self/attr/
    /proc/self/attr/
    ├── apparmor
    │   ├── current
    │   ├── exec
    │   └── prev
    ├── current
    ├── display_lsm
    ├── exec
    ├── fscreate
    ├── keycreate
    ├── prev
    ├── selinux
    │   ├── current
    │   ├── exec
    │   ├── fscreate
    │   ├── keycreate
    │   ├── prev
    │   └── sockcreate
    ├── smack
    │   └── current
    └── sockcreate

Thanks,

--
Darwi
http://darwish.chasingpointers.com

  reply index

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-11 16:26 [PATCH v2 00/10] LSM: Module stacking in support of S.A.R.A and Landlock Casey Schaufler
2018-09-11 16:41 ` [PATCH 01/10] procfs: add smack subdir to attrs Casey Schaufler
2018-09-11 23:45   ` Ahmed S. Darwish [this message]
2018-09-12  0:01     ` Casey Schaufler
2018-09-12 22:57   ` Kees Cook
2018-09-11 16:41 ` [PATCH 02/10] Smack: Abstract use of cred security blob Casey Schaufler
2018-09-12 23:04   ` Kees Cook
2018-09-11 16:41 ` [PATCH 03/10] SELinux: " Casey Schaufler
2018-09-12 23:10   ` Kees Cook
2018-09-11 16:41 ` [PATCH 04/10] LSM: Infrastructure management of the " Casey Schaufler
2018-09-12 23:53   ` Kees Cook
2018-09-13 19:01     ` Casey Schaufler
2018-09-13 21:12       ` Kees Cook
2018-09-11 16:41 ` [PATCH 05/10] SELinux: Abstract use of file " Casey Schaufler
2018-09-12 23:54   ` Kees Cook
2018-09-11 16:42 ` [PATCH 06/10] LSM: Infrastructure management of the " Casey Schaufler
2018-09-13  0:00   ` Kees Cook
2018-09-11 16:42 ` [PATCH 07/10] SELinux: Abstract use of inode " Casey Schaufler
2018-09-13  0:23   ` Kees Cook
2018-09-11 16:42 ` [PATCH 08/10] Smack: " Casey Schaufler
2018-09-13  0:24   ` Kees Cook
2018-09-11 16:42 ` [PATCH 09/10] LSM: Infrastructure management of the inode security Casey Schaufler
2018-09-13  0:30   ` Kees Cook
2018-09-11 16:42 ` [PATCH 10/10] LSM: Blob sharing support for S.A.R.A and LandLock Casey Schaufler
2018-09-13  4:19   ` Kees Cook
2018-09-13 13:16     ` Paul Moore
2018-09-13 15:19       ` Kees Cook
2018-09-13 19:12         ` Paul Moore
2018-09-13 20:58           ` Jordan Glover
2018-09-13 21:50             ` Paul Moore
2018-09-13 22:04               ` Jordan Glover
2018-09-13 23:01               ` Casey Schaufler
2018-09-13 21:01           ` Kees Cook
2018-09-13 21:38             ` Paul Moore
2018-09-13 21:51               ` Kees Cook
2018-09-13 23:06                 ` Kees Cook
2018-09-13 23:32                   ` John Johansen
2018-09-13 23:51                     ` Kees Cook
2018-09-14  0:03                       ` Casey Schaufler
2018-09-14  0:06                         ` Kees Cook
2018-09-13 23:51                   ` Casey Schaufler
2018-09-13 23:57                     ` Kees Cook
2018-09-14  0:08                       ` Casey Schaufler
2018-09-14  0:19                         ` Kees Cook
2018-09-14 15:57                           ` Casey Schaufler
2018-09-14 20:05                             ` Kees Cook
2018-09-14 20:47                               ` Casey Schaufler
2018-09-14 18:18                         ` James Morris
2018-09-14 18:23                           ` John Johansen
2018-09-14  0:03                     ` Kees Cook
2018-09-14  2:42                 ` Paul Moore
2018-09-11 20:43 ` [PATCH v2 00/10] LSM: Module stacking in support of S.A.R.A and Landlock James Morris
2018-09-12 21:29 ` James Morris
2018-09-16 16:54   ` Salvatore Mesoraca
2018-09-16 17:25     ` Casey Schaufler
2018-09-16 17:45       ` Salvatore Mesoraca
2018-09-18  7:44   ` Mickaël Salaün
2018-09-18 15:23     ` Casey Schaufler

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