1 /*
2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 package com.oracle.java.testlibrary;
25
26 import java.util.regex.Pattern;
27 import com.oracle.java.testlibrary.Utils;
28
29 public class Platform {
30 private static final String osName = System.getProperty("os.name");
31 private static final String dataModel = System.getProperty("sun.arch.data.model");
32 private static final String vmVersion = System.getProperty("java.vm.version");
33 private static final String javaVersion = System.getProperty("java.version");
34 private static final String osArch = System.getProperty("os.arch");
35 private static final String vmName = System.getProperty("java.vm.name");
36 private static final String userName = System.getProperty("user.name");
37 private static final String compiler = System.getProperty("sun.management.compiler");
38
39 public static boolean isClient() {
40 return vmName.endsWith(" Client VM");
41 }
42
43 public static boolean isServer() {
44 return vmName.endsWith(" Server VM");
45 }
46
47 public static boolean isGraal() {
48 return vmName.endsWith(" Graal VM");
49 }
50
51 public static boolean isMinimal() {
52 return vmName.endsWith(" Minimal VM");
53 }
54
55 public static boolean isEmbedded() {
56 return vmName.contains("Embedded");
57 }
58
59 public static boolean isTieredSupported() {
60 return compiler.contains("Tiered Compilers");
61 }
62
63 public static boolean is32bit() {
64 return dataModel.equals("32");
65 }
66
67 public static boolean is64bit() {
68 return dataModel.equals("64");
69 }
70
71 public static boolean isAix() {
72 return isOs("aix");
73 }
74
75 public static boolean isLinux() {
76 return isOs("linux");
77 }
78
79 public static boolean isOSX() {
80 return isOs("mac");
81 }
82
83 public static boolean isSolaris() {
84 return isOs("sunos");
85 }
86
87 public static boolean isWindows() {
88 return isOs("win");
89 }
90
91 private static boolean isOs(String osname) {
92 return osName.toLowerCase().startsWith(osname.toLowerCase());
93 }
94
95 public static String getOsName() {
96 return osName;
97 }
98
99 public static boolean isDebugBuild() {
100 return (vmVersion.toLowerCase().contains("debug") ||
101 javaVersion.toLowerCase().contains("debug"));
102 }
103
104 public static String getVMVersion() {
105 return vmVersion;
106 }
107
108 // Returns true for sparc and sparcv9.
109 public static boolean isSparc() {
110 return isArch("sparc.*");
111 }
112
113 public static boolean isARM() {
114 return isArch("arm.*");
115 }
116
117 public static boolean isPPC() {
118 return isArch("ppc.*");
119 }
120
121 public static boolean isX86() {
122 // On Linux it's 'i386', Windows 'x86' without '_64' suffix.
123 return isArch("(i386)|(x86(?!_64))");
124 }
125
126 public static boolean isX64() {
127 // On OSX it's 'x86_64' and on other (Linux, Windows and Solaris) platforms it's 'amd64'
128 return isArch("(amd64)|(x86_64)");
129 }
130
131 private static boolean isArch(String archnameRE) {
132 return Pattern.compile(archnameRE, Pattern.CASE_INSENSITIVE)
133 .matcher(osArch)
134 .matches();
135 }
136
137 public static String getOsArch() {
138 return osArch;
139 }
140
141 /**
142 * Return a boolean for whether we expect to be able to attach
143 * the SA to our own processes on this system.
144 */
145 public static boolean shouldSAAttach() throws Exception {
146
147 if (isAix()) {
148 return false; // SA not implemented.
149 } else if (isLinux()) {
150 return canPtraceAttachLinux();
151 } else if (isOSX()) {
152 return canAttachOSX();
153 } else {
154 // Other platforms expected to work:
155 return true;
156 }
157 }
158
159 /**
160 * On Linux, first check the SELinux boolean "deny_ptrace" and return false
161 * as we expect to be denied if that is "1". Then expect permission to attach
162 * if we are root, so return true. Then return false for an expected denial
163 * if "ptrace_scope" is 1, and true otherwise.
164 */
165 public static boolean canPtraceAttachLinux() throws Exception {
166
167 // SELinux deny_ptrace:
168 String deny_ptrace = Utils.fileAsString("/sys/fs/selinux/booleans/deny_ptrace");
169 if (deny_ptrace != null && deny_ptrace.contains("1")) {
170 // ptrace will be denied:
171 return false;
172 }
173
174 if (userName.equals("root")) {
175 return true;
176 }
177
178 // ptrace_scope:
179 String ptrace_scope = Utils.fileAsString("/proc/sys/kernel/yama/ptrace_scope");
180 if (ptrace_scope != null && ptrace_scope.contains("1")) {
181 // ptrace will be denied:
182 return false;
183 }
184
185 // Otherwise expect to be permitted:
186 return true;
187 }
188
189 /**
190 * On OSX, expect permission to attach only if we are root.
191 */
192 public static boolean canAttachOSX() throws Exception {
193 return userName.equals("root");
194 }
195 }