linux-kernel - [PATCH v9 0/4] seccomp trap to userspace

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Message-Id: <20181203032827.27978-1-tycho@tycho.ws>
Date:   Sun,  2 Dec 2018 20:28:23 -0700
From:   Tycho Andersen <tycho@...ho.ws>
To:     Kees Cook <keescook@...omium.org>
Cc:     Andy Lutomirski <luto@...capital.net>,
        Oleg Nesterov <oleg@...hat.com>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        "Serge E . Hallyn" <serge@...lyn.com>,
        Christian Brauner <christian@...uner.io>,
        Tyler Hicks <tyhicks@...onical.com>,
        Akihiro Suda <suda.akihiro@....ntt.co.jp>,
        Aleksa Sarai <asarai@...e.de>, Jann Horn <jannh@...gle.com>,
        linux-kernel@...r.kernel.org,
        containers@...ts.linux-foundation.org, linux-api@...r.kernel.org,
        Tycho Andersen <tycho@...ho.ws>
Subject: [PATCH v9 0/4] seccomp trap to userspace

Hi all,

Here's a v9 of the seccomp trap to userspace series. Major changes are:

* drop the whole SIGNALED flag thing. This was confusing to a number of
  people, and Oleg pointed out that it makes it fairly easy to get a
  task into an uninterruptible sleep. Now, replies to a task with a
  signal will just get ENOENT, indicating that something happened to the
  other end.
* refactor the tests so that each test tests only one thing :)
* several other minor bug fixes

Cheers,

Tycho

Link to v8: https://lore.kernel.org/lkml/20181029224031.29809-1-tycho@tycho.ws/T/#u

Tycho Andersen (4):
  seccomp: hoist struct seccomp_data recalculation higher
  seccomp: switch system call argument type to void *
  seccomp: add a return code to trap to userspace
  samples: add an example of seccomp user trap

 Documentation/ioctl/ioctl-number.txt          |   1 +
 .../userspace-api/seccomp_filter.rst          |  84 ++++
 include/linux/seccomp.h                       |   9 +-
 include/uapi/linux/seccomp.h                  |  40 +-
 kernel/seccomp.c                              | 468 +++++++++++++++++-
 samples/seccomp/.gitignore                    |   1 +
 samples/seccomp/Makefile                      |   7 +-
 samples/seccomp/user-trap.c                   | 375 ++++++++++++++
 tools/testing/selftests/seccomp/seccomp_bpf.c | 447 ++++++++++++++++-
 9 files changed, 1410 insertions(+), 22 deletions(-)
 create mode 100644 samples/seccomp/user-trap.c

-- 
2.19.1