Thread (45 messages) 45 messages, 7 authors, 2019-07-19

Re: [PATCH v9 08/10] open: openat2(2) syscall

From: Christian Brauner <christian@brauner.io>
Date: 2019-07-19 10:29:57
Also in: linux-alpha, linux-api, linux-arch, linux-arm-kernel, linux-fsdevel, linux-kselftest, linux-mips, linux-s390, linux-sh, lkml, sparclinux

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:
[...]
quoted
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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