From patchwork Thu Jul 16 19:31:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gabriel Krisman Bertazi X-Patchwork-Id: 11668347 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E83891392 for ; Thu, 16 Jul 2020 19:31:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D624F207CB for ; Thu, 16 Jul 2020 19:31:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729506AbgGPTbx (ORCPT ); Thu, 16 Jul 2020 15:31:53 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:48958 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729376AbgGPTbx (ORCPT ); Thu, 16 Jul 2020 15:31:53 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: krisman) with ESMTPSA id 750E12A5A2D From: Gabriel Krisman Bertazi To: tglx@linutronix.de Cc: linux-kernel@vger.kernel.org, kernel@collabora.com, willy@infradead.org, luto@kernel.org, gofmanp@gmail.com, keescook@chromium.org, linux-kselftest@vger.kernel.org, shuah@kernel.org, Gabriel Krisman Bertazi Subject: [PATCH v4 0/2] Syscall User Redirection Date: Thu, 16 Jul 2020 15:31:39 -0400 Message-Id: <20200716193141.4068476-1-krisman@collabora.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Hi, This is v4 of Syscall User Redirection. The implementation itself is not modified from v3, it only applies the latest round of reviews to the selftests. __NR_syscalls is not really exported in header files other than asm-generic for every architecture, so it felt safer to optionally expose it with a fallback to a high value. Also, I didn't expose tests for PR_GET as that is not currently implemented. If possible, I'd have it supported by a future patchset, since it is not immediately necessary to support this feature. Finally, one question: Which tree would this go through? Gabriel Krisman Bertazi (2): kernel: Implement selective syscall userspace redirection selftests: Add kselftest for syscall user dispatch arch/Kconfig | 20 ++ arch/x86/Kconfig | 1 + arch/x86/entry/common.c | 5 + arch/x86/include/asm/thread_info.h | 4 +- arch/x86/kernel/signal_compat.c | 2 +- fs/exec.c | 2 + include/linux/sched.h | 3 + include/linux/syscall_user_dispatch.h | 50 ++++ include/uapi/asm-generic/siginfo.h | 3 +- include/uapi/linux/prctl.h | 5 + kernel/Makefile | 1 + kernel/fork.c | 1 + kernel/sys.c | 5 + kernel/syscall_user_dispatch.c | 92 +++++++ tools/testing/selftests/Makefile | 1 + .../syscall_user_dispatch/.gitignore | 2 + .../selftests/syscall_user_dispatch/Makefile | 9 + .../selftests/syscall_user_dispatch/config | 1 + .../syscall_user_dispatch.c | 256 ++++++++++++++++++ 19 files changed, 460 insertions(+), 3 deletions(-) create mode 100644 include/linux/syscall_user_dispatch.h create mode 100644 kernel/syscall_user_dispatch.c create mode 100644 tools/testing/selftests/syscall_user_dispatch/.gitignore create mode 100644 tools/testing/selftests/syscall_user_dispatch/Makefile create mode 100644 tools/testing/selftests/syscall_user_dispatch/config create mode 100644 tools/testing/selftests/syscall_user_dispatch/syscall_user_dispatch.c