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Subject[RFC 0/3] seccomp trap to userspace
Date
Several months ago at Linux Plumber's, we had a discussion about adding a
feature to seccomp which would allow seccomp to trigger a notification for some
other process. Here's a draft of that feature.

Patch 1 contains the bulk of it, patches 2 & 3 offer an alternative way to
acquire the fd that receives notifications via ptrace (the method in patch 1
poses some problems). Other suggestions for how to acquire one of these fds
would be welcome.

Take a close look at the synchronization. I think I've got it right, but I
probably don't :)

Thanks!

Tycho Andersen (3):
seccomp: add a return code to trap to userspace
seccomp: hoist out filter resolving logic
seccomp: add a way to get a listener fd from ptrace

arch/Kconfig | 7 +
include/linux/seccomp.h | 14 +-
include/uapi/linux/ptrace.h | 1 +
include/uapi/linux/seccomp.h | 18 +-
kernel/ptrace.c | 4 +
kernel/seccomp.c | 467 ++++++++++++++++++++++++--
tools/testing/selftests/seccomp/seccomp_bpf.c | 180 +++++++++-
7 files changed, 653 insertions(+), 38 deletions(-)

--
2.14.1

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