[PATCH v9 0/4] seccomp trap to userspace

[Tycho Andersen]

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@xxxxxxxx/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