From patchwork Sun Jul 12 04:45:14 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: 11658015 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 448B960D for ; Sun, 12 Jul 2020 04:45:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 33B9820849 for ; Sun, 12 Jul 2020 04:45:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728048AbgGLEp2 (ORCPT ); Sun, 12 Jul 2020 00:45:28 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:55404 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725765AbgGLEp2 (ORCPT ); Sun, 12 Jul 2020 00:45:28 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: krisman) with ESMTPSA id C7A3527DF85 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 v3 0/2] Syscall user redirection Date: Sun, 12 Jul 2020 00:45:14 -0400 Message-Id: <20200712044516.2347844-1-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 the v3 of the syscall user redirection patch, applying the suggestions from Matthew and Kees. In particular, it modifies the ABI to allow passing a range of allowed addresses and introduces kselftests for the feature. RFC/v1: https://lkml.org/lkml/2020/7/8/96 v2: https://lkml.org/lkml/2020/7/9/17 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 | 1 + .../selftests/syscall_user_dispatch/Makefile | 5 + .../selftests/syscall_user_dispatch/config | 1 + .../syscall_user_dispatch.c | 259 ++++++++++++++++++ 19 files changed, 458 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