From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6546C77B6C for ; Tue, 28 Mar 2023 16:49:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232365AbjC1QtT (ORCPT ); Tue, 28 Mar 2023 12:49:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231488AbjC1QtE (ORCPT ); Tue, 28 Mar 2023 12:49:04 -0400 Received: from mail-qv1-xf43.google.com (mail-qv1-xf43.google.com [IPv6:2607:f8b0:4864:20::f43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27FC81025E; Tue, 28 Mar 2023 09:48:53 -0700 (PDT) Received: by mail-qv1-xf43.google.com with SMTP id t13so9659139qvn.2; Tue, 28 Mar 2023 09:48:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1680022132; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=CnyFffHnLQxEq4pI3SmE7M+GX7tfHqiqsW+FaERKQAw=; b=RaKG8k6OeBGdCwGbGkcS5OdQ5Cj/kY+pdn3gBmSfyUp8HeMawcyvlbGBWnTppDfvZz GmX8etflZqQb4L8i3UEqexXuYsbLZplcLZ8E+ISBJ/h6t3yK3EweuA+Zt3Dy3KD0a5Yj LD5y0tTVXAV3YczVBy2aPWipmyyfGVijFIwmspeBriqBW+rA/JeU5IOvocBmNhEnSJ5l eak3i0yPm3bVYdSJY7vz51ftZ8QHeCoMCsVh+LbyXhyQDoliQ1Kz2Af22b1kPfhFujz1 HpTCy2iLHKOnOuzJAmf7dokVvN4GWLIRLZA4+RXz/BXEncyTkPufEVUEXBtXQFugfpW1 Ocmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680022132; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=CnyFffHnLQxEq4pI3SmE7M+GX7tfHqiqsW+FaERKQAw=; b=UQ9wubVc7i8MNmIoW5hv4PLKFGqoyqinTN7JOWck8jUN3OrJJg2c/hrMZXd8sFeVRY 0AUR2rXhAo3e8hRojfBiGD0gAvt7zPcB4QIDnjG+MV5a6jPp5B+uEYAqDnb/ChsiFDxf QjbpkNxWbBFIk8cHj4otSEi51mG5z9cGdFu/fpEPc+06e3/qXrGHVV6U4pmB3/Ju7Zob mKJp84eoKKQSObTnmEZuLaZlo+leZMAxOF0v6EKEkRHJfKoEg/+x9ut/+BbAVTW1olB5 zpbtHQqWu3PY2pemvuxp7K5sYyiXI1pu3tXxVx3Ex9YCshijRTuZBTXNsG91j7UfEybL 25Qg== X-Gm-Message-State: AAQBX9eDkTjaY8DwHhmlgL5KSEAdoPdMo22erI02O5TPlKRExKRBFCBU txzKElwqZPiRteuFnygTaEFmX4+SRAL6r6M= X-Google-Smtp-Source: AKy350bh93G4jWcDXuFkkqPn+yZVTQZ/GR41fvaXejwO1Lo7MWUwye7UgpDItK5Z99XCNLKCdfE3Pg== X-Received: by 2002:a05:6214:c29:b0:574:1822:a1bb with SMTP id a9-20020a0562140c2900b005741822a1bbmr26203438qvd.44.1680022132166; Tue, 28 Mar 2023 09:48:52 -0700 (PDT) Received: from fedora.mshome.net (pool-173-79-56-208.washdc.fios.verizon.net. [173.79.56.208]) by smtp.gmail.com with ESMTPSA id qh16-20020a0562144c1000b005dd8b93457bsm3938206qvb.19.2023.03.28.09.48.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Mar 2023 09:48:52 -0700 (PDT) From: Gregory Price X-Google-Original-From: Gregory Price To: linux-kernel@vger.kernel.org Cc: linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org, oleg@redhat.com, avagin@gmail.com, peterz@infradead.org, luto@kernel.org, krisman@collabora.com, tglx@linutronix.de, corbet@lwn.net, shuah@kernel.org, catalin.marinas@arm.com, arnd@arndb.de, will@kernel.org, mark.rutland@arm.com, tongtiangen@huawei.com, robin.murphy@arm.com, Gregory Price Subject: [PATCH v14 4/4] selftest,ptrace: Add selftest for syscall user dispatch config api Date: Tue, 28 Mar 2023 12:48:13 -0400 Message-Id: <20230328164811.2451-5-gregory.price@memverge.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230328164811.2451-1-gregory.price@memverge.com> References: <20230328164811.2451-1-gregory.price@memverge.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Validate that the following new ptrace requests work as expected * PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG - returns the contents of task->syscall_dispatch if enabled * PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG - sets the contents of task->syscall_dispatch Signed-off-by: Gregory Price --- tools/testing/selftests/ptrace/.gitignore | 1 + tools/testing/selftests/ptrace/Makefile | 2 +- tools/testing/selftests/ptrace/get_set_sud.c | 72 ++++++++++++++++++++ 3 files changed, 74 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/ptrace/get_set_sud.c diff --git a/tools/testing/selftests/ptrace/.gitignore b/tools/testing/selftests/ptrace/.gitignore index 792318aaa30c..b7dde152e75a 100644 --- a/tools/testing/selftests/ptrace/.gitignore +++ b/tools/testing/selftests/ptrace/.gitignore @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only get_syscall_info +get_set_sud peeksiginfo vmaccess diff --git a/tools/testing/selftests/ptrace/Makefile b/tools/testing/selftests/ptrace/Makefile index 2f1f532c39db..33a36b73bcb9 100644 --- a/tools/testing/selftests/ptrace/Makefile +++ b/tools/testing/selftests/ptrace/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only CFLAGS += -std=c99 -pthread -iquote../../../../include/uapi -Wall -TEST_GEN_PROGS := get_syscall_info peeksiginfo vmaccess +TEST_GEN_PROGS := get_syscall_info peeksiginfo vmaccess get_set_sud include ../lib.mk diff --git a/tools/testing/selftests/ptrace/get_set_sud.c b/tools/testing/selftests/ptrace/get_set_sud.c new file mode 100644 index 000000000000..5297b10d25c3 --- /dev/null +++ b/tools/testing/selftests/ptrace/get_set_sud.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include "../kselftest_harness.h" +#include +#include +#include +#include +#include +#include + +#include "linux/ptrace.h" + +static int sys_ptrace(int request, pid_t pid, void *addr, void *data) +{ + return syscall(SYS_ptrace, request, pid, addr, data); +} + +TEST(get_set_sud) +{ + struct ptrace_sud_config config; + pid_t child; + int ret = 0; + int status; + + child = fork(); + ASSERT_GE(child, 0); + if (child == 0) { + ASSERT_EQ(0, sys_ptrace(PTRACE_TRACEME, 0, 0, 0)) { + TH_LOG("PTRACE_TRACEME: %m"); + } + kill(getpid(), SIGSTOP); + _exit(1); + } + + waitpid(child, &status, 0); + + memset(&config, 0xff, sizeof(config)); + config.mode = PR_SYS_DISPATCH_ON; + + ret = sys_ptrace(PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG, child, + (void *)sizeof(config), &config); + + ASSERT_EQ(ret, 0); + ASSERT_EQ(config.mode, PR_SYS_DISPATCH_OFF); + ASSERT_EQ(config.selector, 0); + ASSERT_EQ(config.offset, 0); + ASSERT_EQ(config.len, 0); + + config.mode = PR_SYS_DISPATCH_ON; + config.selector = 0; + config.offset = 0x400000; + config.len = 0x1000; + + ret = sys_ptrace(PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG, child, + (void *)sizeof(config), &config); + + ASSERT_EQ(ret, 0); + + memset(&config, 1, sizeof(config)); + ret = sys_ptrace(PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG, child, + (void *)sizeof(config), &config); + + ASSERT_EQ(ret, 0); + ASSERT_EQ(config.mode, PR_SYS_DISPATCH_ON); + ASSERT_EQ(config.selector, 0); + ASSERT_EQ(config.offset, 0x400000); + ASSERT_EQ(config.len, 0x1000); + + kill(child, SIGKILL); +} + +TEST_HARNESS_MAIN -- 2.39.1