--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/lib/jdk/test/lib/Platform.java Fri Aug 19 10:09:25 2016 -0400
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.test.lib;
+
+import java.util.regex.Pattern;
+
+public class Platform {
+ public static final String vmName = System.getProperty("java.vm.name");
+ public static final String vmInfo = System.getProperty("java.vm.info");
+ private static final String osName = System.getProperty("os.name");
+ private static final String dataModel = System.getProperty("sun.arch.data.model");
+ private static final String vmVersion = System.getProperty("java.vm.version");
+ private static final String jdkDebug = System.getProperty("jdk.debug");
+ private static final String osArch = System.getProperty("os.arch");
+ private static final String userName = System.getProperty("user.name");
+ private static final String compiler = System.getProperty("sun.management.compiler");
+
+ public static boolean isClient() {
+ return vmName.endsWith(" Client VM");
+ }
+
+ public static boolean isServer() {
+ return vmName.endsWith(" Server VM");
+ }
+
+ public static boolean isGraal() {
+ return vmName.endsWith(" Graal VM");
+ }
+
+ public static boolean isZero() {
+ return vmName.endsWith(" Zero VM");
+ }
+
+ public static boolean isMinimal() {
+ return vmName.endsWith(" Minimal VM");
+ }
+
+ public static boolean isEmbedded() {
+ return vmName.contains("Embedded");
+ }
+
+ public static boolean isTieredSupported() {
+ return compiler.contains("Tiered Compilers");
+ }
+
+ public static boolean isInt() {
+ return vmInfo.contains("interpreted");
+ }
+
+ public static boolean isMixed() {
+ return vmInfo.contains("mixed");
+ }
+
+ public static boolean isComp() {
+ return vmInfo.contains("compiled");
+ }
+
+ public static boolean is32bit() {
+ return dataModel.equals("32");
+ }
+
+ public static boolean is64bit() {
+ return dataModel.equals("64");
+ }
+
+ public static boolean isAix() {
+ return isOs("aix");
+ }
+
+ public static boolean isLinux() {
+ return isOs("linux");
+ }
+
+ public static boolean isOSX() {
+ return isOs("mac");
+ }
+
+ public static boolean isSolaris() {
+ return isOs("sunos");
+ }
+
+ public static boolean isWindows() {
+ return isOs("win");
+ }
+
+ private static boolean isOs(String osname) {
+ return osName.toLowerCase().startsWith(osname.toLowerCase());
+ }
+
+ public static String getOsName() {
+ return osName;
+ }
+
+ public static boolean isDebugBuild() {
+ return (jdkDebug.toLowerCase().contains("debug"));
+ }
+
+ public static String getVMVersion() {
+ return vmVersion;
+ }
+
+ // Returns true for sparc and sparcv9.
+ public static boolean isSparc() {
+ return isArch("sparc.*");
+ }
+
+ public static boolean isARM() {
+ return isArch("arm.*");
+ }
+
+ public static boolean isPPC() {
+ return isArch("ppc.*");
+ }
+
+ public static boolean isX86() {
+ // On Linux it's 'i386', Windows 'x86' without '_64' suffix.
+ return isArch("(i386)|(x86(?!_64))");
+ }
+
+ public static boolean isX64() {
+ // On OSX it's 'x86_64' and on other (Linux, Windows and Solaris) platforms it's 'amd64'
+ return isArch("(amd64)|(x86_64)");
+ }
+
+ public static boolean isAArch64() {
+ return isArch("aarch64");
+ }
+
+ public static String getOsArch() {
+ return osArch;
+ }
+
+ /**
+ * Return a boolean for whether we expect to be able to attach
+ * the SA to our own processes on this system.
+ */
+ public static boolean shouldSAAttach() throws Exception {
+
+ if (isAix()) {
+ return false; // SA not implemented.
+ } else if (isLinux()) {
+ return canPtraceAttachLinux();
+ } else if (isOSX()) {
+ return canAttachOSX();
+ } else {
+ // Other platforms expected to work:
+ return true;
+ }
+ }
+
+ /**
+ * On Linux, first check the SELinux boolean "deny_ptrace" and return false
+ * as we expect to be denied if that is "1". Then expect permission to attach
+ * if we are root, so return true. Then return false for an expected denial
+ * if "ptrace_scope" is 1, and true otherwise.
+ */
+ public static boolean canPtraceAttachLinux() throws Exception {
+
+ // SELinux deny_ptrace:
+ String deny_ptrace = Utils.fileAsString("/sys/fs/selinux/booleans/deny_ptrace");
+ if (deny_ptrace != null && deny_ptrace.contains("1")) {
+ // ptrace will be denied:
+ return false;
+ }
+
+ // YAMA enhanced security ptrace_scope:
+ // 0 - a process can PTRACE_ATTACH to any other process running under the same uid
+ // 1 - restricted ptrace: a process must be a children of the inferior or user is root
+ // 2 - only processes with CAP_SYS_PTRACE may use ptrace or user is root
+ // 3 - no attach: no processes may use ptrace with PTRACE_ATTACH
+ String ptrace_scope = Utils.fileAsString("/proc/sys/kernel/yama/ptrace_scope");
+ if (ptrace_scope != null) {
+ if (ptrace_scope.startsWith("3")) {
+ return false;
+ }
+ if (!userName.equals("root") && !ptrace_scope.startsWith("0")) {
+ // ptrace will be denied:
+ return false;
+ }
+ }
+ // Otherwise expect to be permitted:
+ return true;
+ }
+
+ /**
+ * On OSX, expect permission to attach only if we are root.
+ */
+ public static boolean canAttachOSX() throws Exception {
+ return userName.equals("root");
+ }
+
+ private static boolean isArch(String archnameRE) {
+ return Pattern.compile(archnameRE, Pattern.CASE_INSENSITIVE)
+ .matcher(osArch)
+ .matches();
+ }
+}