Messages in this thread |  | | From | KP Singh <> | Date | Mon, 30 Dec 2019 16:04:24 +0100 | Subject | Re: [PATCH bpf-next v1 00/13] MAC and Audit policy using eBPF (KRSI) |
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On 23-Dec 22:51, Andrii Nakryiko wrote: > On Fri, Dec 20, 2019 at 7:42 AM KP Singh <kpsingh@chromium.org> wrote: > > > > From: KP Singh <kpsingh@google.com> > > > > This patch series is a continuation of the KRSI RFC > > (https://lore.kernel.org/bpf/20190910115527.5235-1-kpsingh@chromium.org/) > > > > [...] > > > # Usage Examples > > > > A simple example and some documentation is included in the patchset. > > > > In order to better illustrate the capabilities of the framework some > > more advanced prototype code has also been published separately: > > > > * Logging execution events (including environment variables and arguments): > > https://github.com/sinkap/linux-krsi/blob/patch/v1/examples/samples/bpf/lsm_audit_env.c > > * Detecting deletion of running executables: > > https://github.com/sinkap/linux-krsi/blob/patch/v1/examples/samples/bpf/lsm_detect_exec_unlink.c > > * Detection of writes to /proc/<pid>/mem: > > https://github.com/sinkap/linux-krsi/blob/patch/v1/examples/samples/bpf/lsm_audit_env.c > > Are you planning on submitting these examples for inclusion into > samples/bpf or selftests/bpf? It would be great to have more examples > and we can review and suggest nicer ways to go about writing them > (e.g., BPF skeleton and global data Alexei mentioned earlier).
Eventually, yes and in selftest/bpf.
But these examples depend on using security blobs and some non-atomic calls in the BPF helpers which are not handled as a part of the initial patch-set.
Once we have the initial framework finalized, I will update the examples and the helpers they are based on and send these separate patch-sets on the list for review.
- KP
> > > > > We have updated Google's internal telemetry infrastructure and have > > started deploying this LSM on our Linux Workstations. This gives us more > > confidence in the real-world applications of such a system. > > > > KP Singh (13): > > bpf: Refactor BPF_EVENT context macros to its own header. > > bpf: lsm: Add a skeleton and config options > > bpf: lsm: Introduce types for eBPF based LSM > > bpf: lsm: Allow btf_id based attachment for LSM hooks > > tools/libbpf: Add support in libbpf for BPF_PROG_TYPE_LSM > > bpf: lsm: Init Hooks and create files in securityfs > > bpf: lsm: Implement attach, detach and execution. > > bpf: lsm: Show attached program names in hook read handler. > > bpf: lsm: Add a helper function bpf_lsm_event_output > > bpf: lsm: Handle attachment of the same program > > tools/libbpf: Add bpf_program__attach_lsm > > bpf: lsm: Add selftests for BPF_PROG_TYPE_LSM > > bpf: lsm: Add Documentation > > > > [...]
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