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 com.oracle.java.testlibrary.Utils;
27
28 public class Platform {
29 private static final String osName = System.getProperty("os.name");
30 private static final String dataModel = System.getProperty("sun.arch.data.model");
31 private static final String vmVersion = System.getProperty("java.vm.version");
32 private static final String osArch = System.getProperty("os.arch");
33 private static final String vmName = System.getProperty("java.vm.name");
34 private static final String userName = System.getProperty("user.name");
35
36 public static boolean isClient() {
37 return vmName.endsWith(" Client VM");
38 }
39
40 public static boolean isServer() {
41 return vmName.endsWith(" Server VM");
42 }
43
44 public static boolean isGraal() {
45 return vmName.endsWith(" Graal VM");
46 }
47
48 public static boolean isMinimal() {
49 return vmName.endsWith(" Minimal VM");
50 }
51
52 public static boolean isEmbedded() {
53 return vmName.contains("Embedded");
54 }
55
56 public static boolean is32bit() {
57 return dataModel.equals("32");
58 }
59
60 public static boolean is64bit() {
61 return dataModel.equals("64");
62 }
63
64 public static boolean isAix() {
65 return isOs("aix");
66 }
67
68 public static boolean isLinux() {
69 return isOs("linux");
70 }
71
72 public static boolean isOSX() {
73 return isOs("mac");
74 }
75
76 public static boolean isSolaris() {
77 return isOs("sunos");
78 }
79
80 public static boolean isWindows() {
81 return isOs("win");
82 }
83
84 private static boolean isOs(String osname) {
85 return osName.toLowerCase().startsWith(osname.toLowerCase());
86 }
87
88 public static String getOsName() {
89 return osName;
90 }
91
92 public static boolean isDebugBuild() {
93 return vmVersion.toLowerCase().contains("debug");
94 }
95
96 public static String getVMVersion() {
97 return vmVersion;
98 }
99
100 // Returns true for sparc and sparcv9.
101 public static boolean isSparc() {
102 return isArch("sparc");
103 }
104
105 public static boolean isARM() {
106 return isArch("arm");
107 }
108
109 public static boolean isPPC() {
110 return isArch("ppc");
111 }
112
113 public static boolean isX86() {
114 // On Linux it's 'i386', Windows 'x86'
115 return (isArch("i386") || isArch("x86"));
116 }
117
118 public static boolean isX64() {
119 // On OSX it's 'x86_64' and on other (Linux, Windows and Solaris) platforms it's 'amd64'
120 return (isArch("amd64") || isArch("x86_64"));
121 }
122
123 private static boolean isArch(String archname) {
124 return osArch.toLowerCase().startsWith(archname.toLowerCase());
125 }
126
127 public static String getOsArch() {
128 return osArch;
129 }
130
131 /**
132 * Return a boolean for whether we expect to be able to attach
133 * the SA to our own processes on this system.
134 */
135 public static boolean shouldSAAttach() throws Exception {
136
137 if (isAix()) {
138 return false; // SA not implemented.
139 } else if (isLinux()) {
140 return canPtraceAttachLinux();
141 } else if (isOSX()) {
142 return canAttachOSX();
143 } else {
144 // Other platforms expected to work:
145 return true;
146 }
147 }
148
149 /**
150 * On Linux, first check the SELinux boolean "deny_ptrace" and return false
151 * as we expect to be denied if that is "1". Then expect permission to attach
152 * if we are root, so return true. Then return false for an expected denial
153 * if "ptrace_scope" is 1, and true otherwise.
154 */
155 public static boolean canPtraceAttachLinux() throws Exception {
156
157 // SELinux deny_ptrace:
158 String deny_ptrace = Utils.fileAsString("/sys/fs/selinux/booleans/deny_ptrace");
159 if (deny_ptrace != null && deny_ptrace.contains("1")) {
160 // ptrace will be denied:
161 return false;
162 }
163
164 if (userName.equals("root")) {
165 return true;
166 }
167
168 // ptrace_scope:
169 String ptrace_scope = Utils.fileAsString("/proc/sys/kernel/yama/ptrace_scope");
170 if (ptrace_scope != null && ptrace_scope.contains("1")) {
171 // ptrace will be denied:
172 return false;
173 }
174
175 // Otherwise expect to be permitted:
176 return true;
177 }
178
179 /**
180 * On OSX, expect permission to attach only if we are root.
181 */
182 public static boolean canAttachOSX() throws Exception {
183 return userName.equals("root");
184 }
185 }