author | chegar |
Thu, 17 Oct 2019 20:54:25 +0100 | |
branch | datagramsocketimpl-branch |
changeset 58679 | 9c3209ff7550 |
parent 58678 | 9cf78a70fa4f |
parent 58144 | d003b3ef8b60 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, 2019, 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.io.File; |
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import java.io.IOException; |
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import java.io.RandomAccessFile; |
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import java.util.regex.Pattern; |
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import java.security.AccessController; |
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import java.security.PrivilegedAction; |
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import java.security.PrivilegedActionException; |
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import java.security.PrivilegedExceptionAction; |
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public class Platform { |
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public static final String vmName = privilegedGetProperty("java.vm.name"); |
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public static final String vmInfo = privilegedGetProperty("java.vm.info"); |
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private static final String osVersion = privilegedGetProperty("os.version"); |
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private static int osVersionMajor = -1; |
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private static int osVersionMinor = -1; |
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private static final String osName = privilegedGetProperty("os.name"); |
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private static final String dataModel = privilegedGetProperty("sun.arch.data.model"); |
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private static final String vmVersion = privilegedGetProperty("java.vm.version"); |
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private static final String jdkDebug = privilegedGetProperty("jdk.debug"); |
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private static final String osArch = privilegedGetProperty("os.arch"); |
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private static final String userName = privilegedGetProperty("user.name"); |
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private static final String compiler = privilegedGetProperty("sun.management.compiler"); |
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private static String privilegedGetProperty(String key) { |
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return AccessController.doPrivileged(( |
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PrivilegedAction<String>) () -> System.getProperty(key)); |
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} |
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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 isEmulatedClient() { |
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return vmInfo.contains(" emulated-client"); |
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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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|
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// Os version support. |
135 |
private static void init_version() { |
|
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String[] osVersionTokens = osVersion.split("\\."); |
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try { |
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if (osVersionTokens.length > 0) { |
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osVersionMajor = Integer.parseInt(osVersionTokens[0]); |
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if (osVersionTokens.length > 1) { |
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osVersionMinor = Integer.parseInt(osVersionTokens[1]); |
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} |
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} |
|
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} catch (NumberFormatException e) { |
|
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osVersionMajor = osVersionMinor = 0; |
|
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} |
|
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} |
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public static String getOsVersion() { |
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return osVersion; |
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} |
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// Returns major version number from os.version system property. |
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// E.g. 5 on Solaris 10 and 3 on SLES 11.3 (for the linux kernel version). |
|
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public static int getOsVersionMajor() { |
|
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if (osVersionMajor == -1) init_version(); |
|
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return osVersionMajor; |
|
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} |
|
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// Returns minor version number from os.version system property. |
|
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// E.g. 10 on Solaris 10 and 0 on SLES 11.3 (for the linux kernel version). |
|
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public static int getOsVersionMinor() { |
|
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if (osVersionMinor == -1) init_version(); |
|
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return osVersionMinor; |
|
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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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|
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public static boolean isSlowDebugBuild() { |
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return (jdkDebug.toLowerCase().equals("slowdebug")); |
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} |
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|
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public static boolean isFastDebugBuild() { |
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return (jdkDebug.toLowerCase().equals("fastdebug")); |
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} |
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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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|
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public static boolean isAArch64() { |
184 |
return isArch("aarch64"); |
|
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} |
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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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|
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public static boolean isPPC() { |
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return isArch("ppc.*"); |
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} |
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194 |
|
42508 | 195 |
// Returns true for IBM z System running linux. |
196 |
public static boolean isS390x() { |
|
197 |
return isArch("s390.*") || isArch("s/390.*") || isArch("zArch_64"); |
|
198 |
} |
|
199 |
||
200 |
// Returns true for sparc and sparcv9. |
|
201 |
public static boolean isSparc() { |
|
202 |
return isArch("sparc.*"); |
|
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} |
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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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209 |
|
42508 | 210 |
public static boolean isX86() { |
211 |
// On Linux it's 'i386', Windows 'x86' without '_64' suffix. |
|
212 |
return isArch("(i386)|(x86(?!_64))"); |
|
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} |
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|
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public static String getOsArch() { |
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return osArch; |
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217 |
} |
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|
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219 |
/** |
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* Return a boolean for whether SA and jhsdb are ported/available |
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* on this platform. |
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*/ |
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public static boolean hasSA() { |
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224 |
if (isAix()) { |
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return false; // SA not implemented. |
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226 |
} else if (isLinux()) { |
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if (isS390x() || isARM()) { |
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return false; // SA not implemented. |
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229 |
} |
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230 |
} |
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|
231 |
// Other platforms expected to work: |
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232 |
return true; |
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233 |
} |
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|
234 |
|
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235 |
/** |
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|
236 |
* Return a boolean for whether we expect to be able to attach |
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|
237 |
* the SA to our own processes on this system. This requires |
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|
238 |
* that SA is ported/available on this platform. |
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|
239 |
*/ |
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|
240 |
public static boolean shouldSAAttach() throws IOException { |
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|
241 |
if (!hasSA()) return false; |
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|
242 |
if (isLinux()) { |
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|
243 |
return canPtraceAttachLinux(); |
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|
244 |
} else if (isOSX()) { |
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245 |
return canAttachOSX(); |
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|
246 |
} else { |
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|
247 |
// Other platforms expected to work: |
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248 |
return true; |
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|
249 |
} |
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|
250 |
} |
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|
251 |
|
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|
252 |
/** |
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|
253 |
* On Linux, first check the SELinux boolean "deny_ptrace" and return false |
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|
254 |
* as we expect to be denied if that is "1". Then expect permission to attach |
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255 |
* if we are root, so return true. Then return false for an expected denial |
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|
256 |
* if "ptrace_scope" is 1, and true otherwise. |
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|
257 |
*/ |
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258 |
private static boolean canPtraceAttachLinux() throws IOException { |
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259 |
// SELinux deny_ptrace: |
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260 |
File deny_ptrace = new File("/sys/fs/selinux/booleans/deny_ptrace"); |
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|
261 |
if (deny_ptrace.exists()) { |
51637 | 262 |
try (RandomAccessFile file = AccessController.doPrivileged( |
263 |
(PrivilegedExceptionAction<RandomAccessFile>) () -> new RandomAccessFile(deny_ptrace, "r"))) { |
|
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|
264 |
if (file.readByte() != '0') { |
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|
265 |
return false; |
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|
266 |
} |
51637 | 267 |
} catch (PrivilegedActionException e) { |
268 |
IOException t = (IOException) e.getException(); |
|
269 |
throw t; |
|
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270 |
} |
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|
271 |
} |
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272 |
|
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|
273 |
// YAMA enhanced security ptrace_scope: |
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274 |
// 0 - a process can PTRACE_ATTACH to any other process running under the same uid |
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275 |
// 1 - restricted ptrace: a process must be a children of the inferior or user is root |
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276 |
// 2 - only processes with CAP_SYS_PTRACE may use ptrace or user is root |
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277 |
// 3 - no attach: no processes may use ptrace with PTRACE_ATTACH |
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File ptrace_scope = new File("/proc/sys/kernel/yama/ptrace_scope"); |
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279 |
if (ptrace_scope.exists()) { |
51637 | 280 |
try (RandomAccessFile file = AccessController.doPrivileged( |
281 |
(PrivilegedExceptionAction<RandomAccessFile>) () -> new RandomAccessFile(ptrace_scope, "r"))) { |
|
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282 |
byte yama_scope = file.readByte(); |
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|
283 |
if (yama_scope == '3') { |
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return false; |
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} |
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|
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if (!userName.equals("root") && yama_scope != '0') { |
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return false; |
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} |
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} catch (PrivilegedActionException e) { |
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IOException t = (IOException) e.getException(); |
|
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throw t; |
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} |
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} |
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// Otherwise expect to be permitted: |
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return true; |
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} |
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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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private static boolean canAttachOSX() { |
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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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|
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/** |
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* Returns file extension of shared library, e.g. "so" on linux, "dll" on windows. |
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* @return file extension |
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*/ |
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public static String sharedLibraryExt() { |
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if (isWindows()) { |
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return "dll"; |
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} else if (isOSX()) { |
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return "dylib"; |
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} else { |
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return "so"; |
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} |
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} |
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|
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326 |
/* |
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327 |
* Returns name of system variable containing paths to shared native libraries. |
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328 |
*/ |
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329 |
public static String sharedLibraryPathVariableName() { |
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|
330 |
if (isWindows()) { |
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331 |
return "PATH"; |
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|
332 |
} else if (isOSX()) { |
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|
333 |
return "DYLD_LIBRARY_PATH"; |
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|
334 |
} else if (isAix()) { |
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|
335 |
return "LIBPATH"; |
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|
336 |
} else { |
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|
337 |
return "LD_LIBRARY_PATH"; |
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|
338 |
} |
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|
339 |
} |
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|
340 |
|
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|
341 |
public static boolean isDefaultCDSArchiveSupported() { |
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|
342 |
return (is64bit() && |
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|
343 |
isServer() && |
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|
344 |
(isLinux() || |
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isOSX() || |
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isSolaris() || |
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|
347 |
isWindows()) && |
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|
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!isZero() && |
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!isMinimal() && |
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|
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!isAArch64() && |
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|
351 |
!isARM()); |
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|
352 |
} |
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|
353 |
|
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|
354 |
/* |
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|
355 |
* This should match the #if condition in ClassListParser::load_class_from_source(). |
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356 |
*/ |
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|
357 |
public static boolean areCustomLoadersSupportedForCDS() { |
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358 |
return (is64bit() && (isLinux() || isSolaris() || isOSX())); |
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|
359 |
} |
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} |