From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754023AbaGVJPk (ORCPT ); Tue, 22 Jul 2014 05:15:40 -0400 Received: from mail-pa0-f51.google.com ([209.85.220.51]:47633 "EHLO mail-pa0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753124AbaGVJPj (ORCPT ); Tue, 22 Jul 2014 05:15:39 -0400 From: AKASHI Takahiro To: wad@chromium.org, catalin.marinas@arm.com, will.deacon@arm.com, keescook@chromium.org Cc: dsaxena@linaro.org, linux-arm-kernel@lists.infradead.org, linaro-kernel@lists.linaro.org, linux-kernel@vger.kernel.org, AKASHI Takahiro Subject: [PATCH v5 0/3] arm64: Add seccomp support Date: Tue, 22 Jul 2014 18:14:56 +0900 Message-Id: <1406020499-5537-1-git-send-email-takahiro.akashi@linaro.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (Please apply this patch after my audit patch in order to avoid some conflict on arm64/Kconfig.) This patch enables secure computing (system call filtering) on arm64. System calls can be allowed or denied by loaded bpf-style rules. Architecture specific part is to run secure_computing() on syscall entry and check the result. See [3/3] Prerequisites are: * "arm64: Add audit support" patch This code is tested on ARMv8 fast model using * libseccomp v2.1.1 with modifications for arm64 and verified by its "live" tests, 20, 21 and 24. * modified version of Kees' seccomp test for 'changing/skipping a syscall' behavior Changes v4 -> v5: * rebased to v3.16-rc * add patch [1/3] to allow ptrace to change a system call (please note that this patch should be applied even without seccomp.) Changes v3 -> v4: * removed the following patch and moved it to "arm64: prerequisites for audit and ftrace" patchset since it is required for audit and ftrace in case of !COMPAT, too. "arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h" Changes v2 -> v3: * removed unnecessary 'type cast' operations [2/3] * check for a return value (-1) of secure_computing() explicitly [2/3] * aligned with the patch, "arm64: split syscall_trace() into separate functions for enter/exit" [2/3] * changed default of CONFIG_SECCOMP to n [2/3] Changes v1 -> v2: * added generic seccomp.h for arm64 to utilize it [1,2/3] * changed syscall_trace() to return more meaningful value (-EPERM) on seccomp failure case [2/3] * aligned with the change in "arm64: make a single hook to syscall_trace() for all syscall features" v2 [2/3] * removed is_compat_task() definition from compat.h [3/3] AKASHI Takahiro (3): arm64: ptrace: reload a syscall number after ptrace operations asm-generic: Add generic seccomp.h for secure computing mode 1 arm64: Add seccomp support arch/arm64/Kconfig | 14 ++++++++++++++ arch/arm64/include/asm/seccomp.h | 25 +++++++++++++++++++++++++ arch/arm64/include/asm/unistd.h | 3 +++ arch/arm64/kernel/entry.S | 2 ++ arch/arm64/kernel/ptrace.c | 18 ++++++++++++++++++ include/asm-generic/seccomp.h | 28 ++++++++++++++++++++++++++++ 6 files changed, 90 insertions(+) create mode 100644 arch/arm64/include/asm/seccomp.h create mode 100644 include/asm-generic/seccomp.h -- 1.7.9.5