1 /*
2 * Copyright (c) 2013, 2018, 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
28 import com.oracle.java.testlibrary.Utils;
29
30 public class Platform {
31 private static final String osName = System.getProperty("os.name");
32 private static final String dataModel = System.getProperty("sun.arch.data.model");
33 private static final String vmVersion = System.getProperty("java.vm.version");
34 private static final String osArch = System.getProperty("os.arch");
35 public static final String vmName = System.getProperty("java.vm.name");
36 private static final String userName = System.getProperty("user.name");
37
38 public static boolean isClient() {
39 return vmName.endsWith(" Client VM");
40 }
41
42 public static boolean isServer() {
43 return vmName.endsWith(" Server VM");
44 }
45
46 public static boolean isGraal() {
47 return vmName.endsWith(" Graal VM");
48 }
49
50 public static boolean isMinimal() {
51 return vmName.endsWith(" Minimal VM");
52 }
53
54 public static boolean isEmbedded() {
55 return vmName.contains("Embedded");
56 }
57
58 public static boolean is32bit() {
59 return dataModel.equals("32");
60 }
61
62 public static boolean is64bit() {
63 return dataModel.equals("64");
64 }
65
66 public static boolean isAix() {
67 return isOs("aix");
68 }
69
70 public static boolean isLinux() {
71 return isOs("linux");
72 }
73
74 public static boolean isOSX() {
75 return isOs("mac");
76 }
77
78 public static boolean isSolaris() {
79 return isOs("sunos");
80 }
81
82 public static boolean isWindows() {
83 return isOs("win");
84 }
85
86 private static boolean isOs(String osname) {
87 return osName.toLowerCase().startsWith(osname.toLowerCase());
88 }
89
90 public static String getOsName() {
91 return osName;
92 }
93
94 public static boolean isDebugBuild() {
95 return vmVersion.toLowerCase().contains("debug");
96 }
97
98 public static String getVMVersion() {
99 return vmVersion;
100 }
101
102 // Returns true for sparc and sparcv9.
103 public static boolean isSparc() {
104 return isArch("sparc.*");
105 }
106
107 public static boolean isARM() {
108 return isArch("arm.*");
109 }
110
111 public static boolean isPPC() {
112 return isArch("ppc.*");
113 }
114
115 public static boolean isX86() {
116 // On Linux it's 'i386', Windows 'x86' without '_64' suffix.
117 return isArch("(i386)|(x86(?!_64))");
118 }
119
120 public static boolean isX64() {
121 // On OSX it's 'x86_64' and on other (Linux, Windows and Solaris) platforms it's 'amd64'
122 return isArch("(amd64)|(x86_64)");
123 }
124
125 public static boolean isAArch64() {
126 return isArch("aarch64");
127 }
128
129 private static boolean isArch(String archnameRE) {
130 return Pattern.compile(archnameRE, Pattern.CASE_INSENSITIVE)
131 .matcher(osArch)
132 .matches();
133 }
134
135 public static String getOsArch() {
136 return osArch;
137 }
138
139 /**
140 * Return a boolean for whether we expect to be able to attach
141 * the SA to our own processes on this system.
142 */
143 public static boolean shouldSAAttach() throws Exception {
144
145 if (isAix()) {
146 return false; // SA not implemented.
147 } else if (isLinux()) {
148 return canPtraceAttachLinux();
149 } else if (isOSX()) {
150 return canAttachOSX();
151 } else {
152 // Other platforms expected to work:
153 return true;
154 }
155 }
156
157 /**
158 * On Linux, first check the SELinux boolean "deny_ptrace" and return false
159 * as we expect to be denied if that is "1". Then expect permission to attach
160 * if we are root, so return true. Then return false for an expected denial
161 * if "ptrace_scope" is 1, and true otherwise.
162 */
163 public static boolean canPtraceAttachLinux() throws Exception {
164
165 // SELinux deny_ptrace:
166 String deny_ptrace = Utils.fileAsString("/sys/fs/selinux/booleans/deny_ptrace");
167 if (deny_ptrace != null && deny_ptrace.contains("1")) {
168 // ptrace will be denied:
169 return false;
170 }
171
172 if (userName.equals("root")) {
173 return true;
174 }
175
176 // ptrace_scope:
177 String ptrace_scope = Utils.fileAsString("/proc/sys/kernel/yama/ptrace_scope");
178 if (ptrace_scope != null && ptrace_scope.contains("1")) {
179 // ptrace will be denied:
180 return false;
181 }
182
183 // Otherwise expect to be permitted:
184 return true;
185 }
186
187 /**
188 * On OSX, expect permission to attach only if we are root.
189 */
190 public static boolean canAttachOSX() throws Exception {
191 return userName.equals("root");
192 }
193 }