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test/lib/testlibrary/jdk/testlibrary/Platform.java

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rev 13428 : jfr backport

*** 1,7 **** /* ! * Copyright (c) 2013, 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. --- 1,7 ---- /* ! * Copyright (c) 2013, 2017, 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.
*** 21,103 **** * questions. */ package jdk.testlibrary; public class Platform { 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 osArch = System.getProperty("os.arch"); public static boolean is32bit() { return dataModel.equals("32"); } public static boolean is64bit() { return dataModel.equals("64"); } ! public static boolean isSolaris() { ! return isOs("sunos"); } ! public static boolean isWindows() { ! return isOs("win"); } public static boolean isOSX() { return isOs("mac"); } ! public static boolean isLinux() { ! return isOs("linux"); } private static boolean isOs(String osname) { return osName.toLowerCase().startsWith(osname.toLowerCase()); } public static String getOsName() { return osName; } public static boolean isDebugBuild() { ! return vmVersion.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' ! return (isArch("i386") || isArch("x86")); } public static boolean isX64() { // On OSX it's 'x86_64' and on other (Linux, Windows and Solaris) platforms it's 'amd64' ! return (isArch("amd64") || isArch("x86_64")); } ! private static boolean isArch(String archname) { ! return osArch.toLowerCase().startsWith(archname.toLowerCase()); } public static String getOsArch() { return osArch; } } --- 21,303 ---- * questions. */ package jdk.testlibrary; + import java.io.File; + import java.io.IOException; + import java.io.RandomAccessFile; + 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 osVersion = System.getProperty("os.version"); + private static int osVersionMajor = -1; + private static int osVersionMinor = -1; 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 isEmulatedClient() { + return vmInfo.contains(" emulated-client"); + } + + 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; } + // Os version support. + private static void init_version() { + try { + final String[] tokens = osVersion.split("\\."); + if (tokens.length > 0) { + osVersionMajor = Integer.parseInt(tokens[0]); + if (tokens.length > 1) { + osVersionMinor = Integer.parseInt(tokens[1]); + } + } + } catch (NumberFormatException e) { + osVersionMajor = osVersionMinor = 0; + } + } + + // Returns major version number from os.version system property. + // E.g. 5 on Solaris 10 and 3 on SLES 11.3 (for the linux kernel version). + public static int getOsVersionMajor() { + if (osVersionMajor == -1) init_version(); + return osVersionMajor; + } + + // Returns minor version number from os.version system property. + // E.g. 10 on Solaris 10 and 0 on SLES 11.3 (for the linux kernel version). + public static int getOsVersionMinor() { + if (osVersionMinor == -1) init_version(); + return osVersionMinor; + } + public static boolean isDebugBuild() { ! return (jdkDebug.toLowerCase().contains("debug")); ! } ! ! public static boolean isSlowDebugBuild() { ! return (jdkDebug.toLowerCase().equals("slowdebug")); ! } ! ! public static boolean isFastDebugBuild() { ! return (jdkDebug.toLowerCase().equals("fastdebug")); } public static String getVMVersion() { return vmVersion; } ! public static boolean isAArch64() { ! return isArch("aarch64"); } public static boolean isARM() { ! return isArch("arm.*"); } public static boolean isPPC() { ! return isArch("ppc.*"); } ! // Returns true for IBM z System running linux. ! public static boolean isS390x() { ! return isArch("s390.*") || isArch("s/390.*") || isArch("zArch_64"); ! } ! ! // Returns true for sparc and sparcv9. ! public static boolean isSparc() { ! return isArch("sparc.*"); } 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 isX86() { ! // On Linux it's 'i386', Windows 'x86' without '_64' suffix. ! return isArch("(i386)|(x86(?!_64))"); } 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 IOException { + if (isAix()) { + return false; // SA not implemented. + } else if (isLinux()) { + if (isS390x()) { + return false; // SA not implemented. + } + 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. + */ + private static boolean canPtraceAttachLinux() throws IOException { + // SELinux deny_ptrace: + File deny_ptrace = new File("/sys/fs/selinux/booleans/deny_ptrace"); + if (deny_ptrace.exists()) { + try (RandomAccessFile file = new RandomAccessFile(deny_ptrace, "r")) { + if (file.readByte() != '0') { + 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 + File ptrace_scope = new File("/proc/sys/kernel/yama/ptrace_scope"); + if (ptrace_scope.exists()) { + try (RandomAccessFile file = new RandomAccessFile(ptrace_scope, "r")) { + byte yama_scope = file.readByte(); + if (yama_scope == '3') { + return false; + } + + if (!userName.equals("root") && yama_scope != '0') { + return false; + } + } + } + // Otherwise expect to be permitted: + return true; + } + + /** + * On OSX, expect permission to attach only if we are root. + */ + private static boolean canAttachOSX() { + return userName.equals("root"); + } + + private static boolean isArch(String archnameRE) { + return Pattern.compile(archnameRE, Pattern.CASE_INSENSITIVE) + .matcher(osArch) + .matches(); + } + + /** + * Returns file extension of shared library, e.g. "so" on linux, "dll" on windows. + * @return file extension + */ + public static String sharedLibraryExt() { + if (isWindows()) { + return "dll"; + } else if (isOSX()) { + return "dylib"; + } else { + return "so"; + } + } + + /* + * This should match the #if condition in ClassListParser::load_class_from_source(). + */ + public static boolean areCustomLoadersSupportedForCDS() { + boolean isLinux = Platform.isLinux(); + boolean is64 = Platform.is64bit(); + boolean isSolaris = Platform.isSolaris(); + boolean isAix = Platform.isAix(); + + return (is64 && (isLinux || isSolaris || isAix)); + } }
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