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SubjectRe: [PATCH v9 08/10] open: openat2(2) syscall
On Fri, Jul 19, 2019 at 05:12:18AM +0300, Dmitry V. Levin wrote:
> On Thu, Jul 18, 2019 at 11:29:50PM +0200, Arnd Bergmann wrote:
> [...]
> > 5. you get the same problem with seccomp and strace that
> > clone3() has -- these and others only track the register
> > arguments by default.
>
> Just for the record, this is definitely not the case for strace:
> it decodes arrays, structures, netlink messages, and so on by default.

There sure is value in trying to design syscalls that can be handled
nicely by seccomp but that shouldn't become a burden on designing
extensible syscalls.
I suggested a session for Ksummit where we can discuss if and how we can
make seccomp more compatible with pointer-args in syscalls.

Christian

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