On Thu, Mar 15, 2018 at 4:09 PM, Christian Brauner <christian.brauner@xxxxxxxxxxxxx> wrote: > On Sun, Feb 04, 2018 at 11:49:43AM +0100, Tycho Andersen wrote: >> 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(-) > > Hey, > > So, I've been following the discussion silently in the background and I > see that it got sidetracked into seccomp + ebpf. While I can see that > there is value in adding epbf support to seccomp I'd really like to see > this decoupled from this patchset. Afaict, this patchset would just work > fine without the ebpf portion (but I might be just have missed the > point). So if possible I would like to see a second version of this with > the comments accounted for and - if possible - have this up for merging > independent of the ebpf patchset that's floating around. > The issue is that it might be (and, then again, might not be) nicer to to *synchronously* call out to the monitor in the filter. eBPF can do that very cleanly, whereas classic BPF can't. _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers
