1 /*
2 * Copyright (c) 2013, 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 jdk.testlibrary;
25
26 public class Platform {
27 private static final String osName = System.getProperty("os.name");
28 private static final String dataModel = System.getProperty("sun.arch.data.model");
29 private static final String vmVersion = System.getProperty("java.vm.version");
30 private static final String osArch = System.getProperty("os.arch");
31
32 public static boolean is32bit() {
33 return dataModel.equals("32");
34 }
35
36 public static boolean is64bit() {
37 return dataModel.equals("64");
38 }
39
40 public static boolean isSolaris() {
41 return isOs("sunos");
42 }
43
44 public static boolean isWindows() {
45 return isOs("win");
46 }
47
48 public static boolean isOSX() {
49 return isOs("mac");
50 }
51
52 public static boolean isLinux() {
53 return isOs("linux");
54 }
55
56 private static boolean isOs(String osname) {
57 return osName.toLowerCase().startsWith(osname.toLowerCase());
58 }
59
60 public static String getOsName() {
61 return osName;
62 }
63
64 public static boolean isDebugBuild() {
65 return vmVersion.toLowerCase().contains("debug");
66 }
67
68 public static String getVMVersion() {
69 return vmVersion;
70 }
71
72 // Returns true for sparc and sparcv9.
73 public static boolean isSparc() {
74 return isArch("sparc");
75 }
76
77 public static boolean isARM() {
78 return isArch("arm");
79 }
80
81 public static boolean isPPC() {
82 return isArch("ppc");
83 }
84
85 public static boolean isX86() {
86 // On Linux it's 'i386', Windows 'x86'
87 return (isArch("i386") || isArch("x86"));
88 }
89
90 public static boolean isX64() {
91 // On OSX it's 'x86_64' and on other (Linux, Windows and Solaris) platforms it's 'amd64'
92 return (isArch("amd64") || isArch("x86_64"));
93 }
94
95 private static boolean isArch(String archname) {
96 return osArch.toLowerCase().startsWith(archname.toLowerCase());
97 }
98
99 public static String getOsArch() {
100 return osArch;
101 }
102
103 }
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1 /*
2 * Copyright (c) 2013, 2017, 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 jdk.testlibrary;
25
26 import java.io.File;
27 import java.io.IOException;
28 import java.io.RandomAccessFile;
29 import java.util.regex.Pattern;
30
31 public class Platform {
32 public static final String vmName = System.getProperty("java.vm.name");
33 public static final String vmInfo = System.getProperty("java.vm.info");
34 private static final String osVersion = System.getProperty("os.version");
35 private static int osVersionMajor = -1;
36 private static int osVersionMinor = -1;
37 private static final String osName = System.getProperty("os.name");
38 private static final String dataModel = System.getProperty("sun.arch.data.model");
39 private static final String vmVersion = System.getProperty("java.vm.version");
40 private static final String jdkDebug = System.getProperty("jdk.debug");
41 private static final String osArch = System.getProperty("os.arch");
42 private static final String userName = System.getProperty("user.name");
43 private static final String compiler = System.getProperty("sun.management.compiler");
44
45 public static boolean isClient() {
46 return vmName.endsWith(" Client VM");
47 }
48
49 public static boolean isServer() {
50 return vmName.endsWith(" Server VM");
51 }
52
53 public static boolean isGraal() {
54 return vmName.endsWith(" Graal VM");
55 }
56
57 public static boolean isZero() {
58 return vmName.endsWith(" Zero VM");
59 }
60
61 public static boolean isMinimal() {
62 return vmName.endsWith(" Minimal VM");
63 }
64
65 public static boolean isEmbedded() {
66 return vmName.contains("Embedded");
67 }
68
69 public static boolean isEmulatedClient() {
70 return vmInfo.contains(" emulated-client");
71 }
72
73 public static boolean isTieredSupported() {
74 return compiler.contains("Tiered Compilers");
75 }
76
77 public static boolean isInt() {
78 return vmInfo.contains("interpreted");
79 }
80
81 public static boolean isMixed() {
82 return vmInfo.contains("mixed");
83 }
84
85 public static boolean isComp() {
86 return vmInfo.contains("compiled");
87 }
88
89 public static boolean is32bit() {
90 return dataModel.equals("32");
91 }
92
93 public static boolean is64bit() {
94 return dataModel.equals("64");
95 }
96
97 public static boolean isAix() {
98 return isOs("aix");
99 }
100
101 public static boolean isLinux() {
102 return isOs("linux");
103 }
104
105 public static boolean isOSX() {
106 return isOs("mac");
107 }
108
109 public static boolean isSolaris() {
110 return isOs("sunos");
111 }
112
113 public static boolean isWindows() {
114 return isOs("win");
115 }
116
117 private static boolean isOs(String osname) {
118 return osName.toLowerCase().startsWith(osname.toLowerCase());
119 }
120
121 public static String getOsName() {
122 return osName;
123 }
124
125 // Os version support.
126 private static void init_version() {
127 try {
128 final String[] tokens = osVersion.split("\\.");
129 if (tokens.length > 0) {
130 osVersionMajor = Integer.parseInt(tokens[0]);
131 if (tokens.length > 1) {
132 osVersionMinor = Integer.parseInt(tokens[1]);
133 }
134 }
135 } catch (NumberFormatException e) {
136 osVersionMajor = osVersionMinor = 0;
137 }
138 }
139
140 // Returns major version number from os.version system property.
141 // E.g. 5 on Solaris 10 and 3 on SLES 11.3 (for the linux kernel version).
142 public static int getOsVersionMajor() {
143 if (osVersionMajor == -1) init_version();
144 return osVersionMajor;
145 }
146
147 // Returns minor version number from os.version system property.
148 // E.g. 10 on Solaris 10 and 0 on SLES 11.3 (for the linux kernel version).
149 public static int getOsVersionMinor() {
150 if (osVersionMinor == -1) init_version();
151 return osVersionMinor;
152 }
153
154 public static boolean isDebugBuild() {
155 return (jdkDebug.toLowerCase().contains("debug"));
156 }
157
158 public static boolean isSlowDebugBuild() {
159 return (jdkDebug.toLowerCase().equals("slowdebug"));
160 }
161
162 public static boolean isFastDebugBuild() {
163 return (jdkDebug.toLowerCase().equals("fastdebug"));
164 }
165
166 public static String getVMVersion() {
167 return vmVersion;
168 }
169
170 public static boolean isAArch64() {
171 return isArch("aarch64");
172 }
173
174 public static boolean isARM() {
175 return isArch("arm.*");
176 }
177
178 public static boolean isPPC() {
179 return isArch("ppc.*");
180 }
181
182 // Returns true for IBM z System running linux.
183 public static boolean isS390x() {
184 return isArch("s390.*") || isArch("s/390.*") || isArch("zArch_64");
185 }
186
187 // Returns true for sparc and sparcv9.
188 public static boolean isSparc() {
189 return isArch("sparc.*");
190 }
191
192 public static boolean isX64() {
193 // On OSX it's 'x86_64' and on other (Linux, Windows and Solaris) platforms it's 'amd64'
194 return isArch("(amd64)|(x86_64)");
195 }
196
197 public static boolean isX86() {
198 // On Linux it's 'i386', Windows 'x86' without '_64' suffix.
199 return isArch("(i386)|(x86(?!_64))");
200 }
201
202 public static String getOsArch() {
203 return osArch;
204 }
205
206 /**
207 * Return a boolean for whether we expect to be able to attach
208 * the SA to our own processes on this system.
209 */
210 public static boolean shouldSAAttach() throws IOException {
211 if (isAix()) {
212 return false; // SA not implemented.
213 } else if (isLinux()) {
214 if (isS390x()) {
215 return false; // SA not implemented.
216 }
217 return canPtraceAttachLinux();
218 } else if (isOSX()) {
219 return canAttachOSX();
220 } else {
221 // Other platforms expected to work:
222 return true;
223 }
224 }
225
226 /**
227 * On Linux, first check the SELinux boolean "deny_ptrace" and return false
228 * as we expect to be denied if that is "1". Then expect permission to attach
229 * if we are root, so return true. Then return false for an expected denial
230 * if "ptrace_scope" is 1, and true otherwise.
231 */
232 private static boolean canPtraceAttachLinux() throws IOException {
233 // SELinux deny_ptrace:
234 File deny_ptrace = new File("/sys/fs/selinux/booleans/deny_ptrace");
235 if (deny_ptrace.exists()) {
236 try (RandomAccessFile file = new RandomAccessFile(deny_ptrace, "r")) {
237 if (file.readByte() != '0') {
238 return false;
239 }
240 }
241 }
242
243 // YAMA enhanced security ptrace_scope:
244 // 0 - a process can PTRACE_ATTACH to any other process running under the same uid
245 // 1 - restricted ptrace: a process must be a children of the inferior or user is root
246 // 2 - only processes with CAP_SYS_PTRACE may use ptrace or user is root
247 // 3 - no attach: no processes may use ptrace with PTRACE_ATTACH
248 File ptrace_scope = new File("/proc/sys/kernel/yama/ptrace_scope");
249 if (ptrace_scope.exists()) {
250 try (RandomAccessFile file = new RandomAccessFile(ptrace_scope, "r")) {
251 byte yama_scope = file.readByte();
252 if (yama_scope == '3') {
253 return false;
254 }
255
256 if (!userName.equals("root") && yama_scope != '0') {
257 return false;
258 }
259 }
260 }
261 // Otherwise expect to be permitted:
262 return true;
263 }
264
265 /**
266 * On OSX, expect permission to attach only if we are root.
267 */
268 private static boolean canAttachOSX() {
269 return userName.equals("root");
270 }
271
272 private static boolean isArch(String archnameRE) {
273 return Pattern.compile(archnameRE, Pattern.CASE_INSENSITIVE)
274 .matcher(osArch)
275 .matches();
276 }
277
278 /**
279 * Returns file extension of shared library, e.g. "so" on linux, "dll" on windows.
280 * @return file extension
281 */
282 public static String sharedLibraryExt() {
283 if (isWindows()) {
284 return "dll";
285 } else if (isOSX()) {
286 return "dylib";
287 } else {
288 return "so";
289 }
290 }
291
292 /*
293 * This should match the #if condition in ClassListParser::load_class_from_source().
294 */
295 public static boolean areCustomLoadersSupportedForCDS() {
296 boolean isLinux = Platform.isLinux();
297 boolean is64 = Platform.is64bit();
298 boolean isSolaris = Platform.isSolaris();
299 boolean isAix = Platform.isAix();
300
301 return (is64 && (isLinux || isSolaris || isAix));
302 }
303 }
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