author | ctornqvi |
Fri, 19 Aug 2016 10:09:25 -0400 | |
changeset 40614 | b5d80754b40e |
parent 39949 | test/lib/share/classes/jdk/test/lib/Platform.java@ca77d07755bc |
child 41041 | 9004ed3bcbd8 |
child 41264 | 28502a6422d6 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package jdk.test.lib; |
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import java.util.regex.Pattern; |
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public class Platform { |
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public static final String vmName = System.getProperty("java.vm.name"); |
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public static final String vmInfo = System.getProperty("java.vm.info"); |
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private static final String osName = System.getProperty("os.name"); |
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private static final String dataModel = System.getProperty("sun.arch.data.model"); |
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private static final String vmVersion = System.getProperty("java.vm.version"); |
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private static final String jdkDebug = System.getProperty("jdk.debug"); |
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private static final String osArch = System.getProperty("os.arch"); |
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private static final String userName = System.getProperty("user.name"); |
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private static final String compiler = System.getProperty("sun.management.compiler"); |
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public static boolean isClient() { |
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return vmName.endsWith(" Client VM"); |
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} |
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public static boolean isServer() { |
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return vmName.endsWith(" Server VM"); |
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} |
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public static boolean isGraal() { |
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return vmName.endsWith(" Graal VM"); |
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} |
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public static boolean isZero() { |
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return vmName.endsWith(" Zero VM"); |
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} |
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public static boolean isMinimal() { |
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return vmName.endsWith(" Minimal VM"); |
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} |
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public static boolean isEmbedded() { |
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return vmName.contains("Embedded"); |
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} |
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public static boolean isTieredSupported() { |
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return compiler.contains("Tiered Compilers"); |
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} |
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public static boolean isInt() { |
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return vmInfo.contains("interpreted"); |
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} |
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public static boolean isMixed() { |
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return vmInfo.contains("mixed"); |
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} |
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public static boolean isComp() { |
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return vmInfo.contains("compiled"); |
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} |
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public static boolean is32bit() { |
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return dataModel.equals("32"); |
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} |
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public static boolean is64bit() { |
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return dataModel.equals("64"); |
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} |
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public static boolean isAix() { |
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return isOs("aix"); |
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} |
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public static boolean isLinux() { |
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return isOs("linux"); |
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} |
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public static boolean isOSX() { |
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return isOs("mac"); |
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} |
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public static boolean isSolaris() { |
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return isOs("sunos"); |
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} |
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public static boolean isWindows() { |
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return isOs("win"); |
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} |
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private static boolean isOs(String osname) { |
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return osName.toLowerCase().startsWith(osname.toLowerCase()); |
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} |
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public static String getOsName() { |
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return osName; |
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} |
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public static boolean isDebugBuild() { |
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return (jdkDebug.toLowerCase().contains("debug")); |
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} |
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public static String getVMVersion() { |
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return vmVersion; |
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} |
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// Returns true for sparc and sparcv9. |
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public static boolean isSparc() { |
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return isArch("sparc.*"); |
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} |
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public static boolean isARM() { |
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return isArch("arm.*"); |
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} |
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public static boolean isPPC() { |
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return isArch("ppc.*"); |
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} |
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public static boolean isX86() { |
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// On Linux it's 'i386', Windows 'x86' without '_64' suffix. |
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return isArch("(i386)|(x86(?!_64))"); |
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} |
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public static boolean isX64() { |
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// On OSX it's 'x86_64' and on other (Linux, Windows and Solaris) platforms it's 'amd64' |
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return isArch("(amd64)|(x86_64)"); |
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} |
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public static boolean isAArch64() { |
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return isArch("aarch64"); |
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} |
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public static String getOsArch() { |
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return osArch; |
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} |
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/** |
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* Return a boolean for whether we expect to be able to attach |
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* the SA to our own processes on this system. |
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*/ |
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public static boolean shouldSAAttach() throws Exception { |
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|
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if (isAix()) { |
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return false; // SA not implemented. |
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} else if (isLinux()) { |
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return canPtraceAttachLinux(); |
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} else if (isOSX()) { |
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return canAttachOSX(); |
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} else { |
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// Other platforms expected to work: |
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return true; |
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} |
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} |
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|
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/** |
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* On Linux, first check the SELinux boolean "deny_ptrace" and return false |
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* as we expect to be denied if that is "1". Then expect permission to attach |
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* if we are root, so return true. Then return false for an expected denial |
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* if "ptrace_scope" is 1, and true otherwise. |
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*/ |
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public static boolean canPtraceAttachLinux() throws Exception { |
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|
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// SELinux deny_ptrace: |
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String deny_ptrace = Utils.fileAsString("/sys/fs/selinux/booleans/deny_ptrace"); |
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if (deny_ptrace != null && deny_ptrace.contains("1")) { |
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// ptrace will be denied: |
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return false; |
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} |
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|
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// YAMA enhanced security ptrace_scope: |
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// 0 - a process can PTRACE_ATTACH to any other process running under the same uid |
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// 1 - restricted ptrace: a process must be a children of the inferior or user is root |
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// 2 - only processes with CAP_SYS_PTRACE may use ptrace or user is root |
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// 3 - no attach: no processes may use ptrace with PTRACE_ATTACH |
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String ptrace_scope = Utils.fileAsString("/proc/sys/kernel/yama/ptrace_scope"); |
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if (ptrace_scope != null) { |
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if (ptrace_scope.startsWith("3")) { |
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return false; |
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} |
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if (!userName.equals("root") && !ptrace_scope.startsWith("0")) { |
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// ptrace will be denied: |
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return false; |
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200 |
} |
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} |
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// Otherwise expect to be permitted: |
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return true; |
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204 |
} |
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|
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/** |
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* On OSX, expect permission to attach only if we are root. |
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*/ |
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public static boolean canAttachOSX() throws Exception { |
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return userName.equals("root"); |
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} |
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|
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private static boolean isArch(String archnameRE) { |
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return Pattern.compile(archnameRE, Pattern.CASE_INSENSITIVE) |
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.matcher(osArch) |
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.matches(); |
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} |
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} |