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/*
* Copyright (c) 2013, 2015, 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 com.oracle.java.testlibrary;
import java.util.regex.Pattern;
import com.oracle.java.testlibrary.Utils;
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");
private static final String vmName = System.getProperty("java.vm.name");
private static final String userName = System.getProperty("user.name");
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 isMinimal() {
return vmName.endsWith(" Minimal VM");
}
public static boolean isEmbedded() {
return vmName.contains("Embedded");
}
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 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' 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");
}
private static boolean isArch(String archnameRE) {
return Pattern.compile(archnameRE, Pattern.CASE_INSENSITIVE)
.matcher(osArch)
.matches();
}
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;
}
if (userName.equals("root")) {
return true;
}
// ptrace_scope:
String ptrace_scope = Utils.fileAsString("/proc/sys/kernel/yama/ptrace_scope");
if (ptrace_scope != null && ptrace_scope.contains("1")) {
// 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");
}
}
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