1 /*
2 * Copyright (c) 1995, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /*
27 * Shared source for 'java' command line tool.
28 *
29 * If JAVA_ARGS is defined, then acts as a launcher for applications. For
30 * instance, the JDK command line tools such as javac and javadoc (see
31 * makefiles for more details) are built with this program. Any arguments
32 * prefixed with '-J' will be passed directly to the 'java' command.
33 */
34
35 /*
36 * One job of the launcher is to remove command line options which the
37 * vm does not understand and will not process. These options include
38 * options which select which style of vm is run (e.g. -client and
39 * -server) as well as options which select the data model to use.
40 * Additionally, for tools which invoke an underlying vm "-J-foo"
41 * options are turned into "-foo" options to the vm. This option
42 * filtering is handled in a number of places in the launcher, some of
43 * it in machine-dependent code. In this file, the function
44 * CheckJvmType removes vm style options and TranslateApplicationArgs
45 * removes "-J" prefixes. The CreateExecutionEnvironment function processes
46 * and removes -d<n> options. On unix, there is a possibility that the running
47 * data model may not match to the desired data model, in this case an exec is
48 * required to start the desired model. If the data models match, then
49 * ParseArguments will remove the -d<n> flags. If the data models do not match
50 * the CreateExecutionEnviroment will remove the -d<n> flags.
51 */
52
53
54 #include "java.h"
55
56 /*
57 * A NOTE TO DEVELOPERS: For performance reasons it is important that
58 * the program image remain relatively small until after SelectVersion
59 * CreateExecutionEnvironment have finished their possibly recursive
60 * processing. Watch everything, but resist all temptations to use Java
61 * interfaces.
62 */
63
64 /* we always print to stderr */
65 #define USE_STDERR JNI_TRUE
66
67 static jboolean printVersion = JNI_FALSE; /* print and exit */
68 static jboolean showVersion = JNI_FALSE; /* print but continue */
69 static jboolean printUsage = JNI_FALSE; /* print and exit*/
70 static jboolean printXUsage = JNI_FALSE; /* print and exit*/
71 static jboolean dryRun = JNI_FALSE; /* initialize VM and exit */
72 static char *showSettings = NULL; /* print but continue */
73 static char *listModules = NULL;
74
75 static const char *_program_name;
76 static const char *_launcher_name;
77 static jboolean _is_java_args = JNI_FALSE;
78 static jboolean _have_classpath = JNI_FALSE;
79 static const char *_fVersion;
80 static jboolean _wc_enabled = JNI_FALSE;
81 static jint _ergo_policy = DEFAULT_POLICY;
82
83 /*
84 * Entries for splash screen environment variables.
85 * putenv is performed in SelectVersion. We need
86 * them in memory until UnsetEnv, so they are made static
87 * global instead of auto local.
88 */
89 static char* splash_file_entry = NULL;
90 static char* splash_jar_entry = NULL;
91
92 /*
93 * List of VM options to be specified when the VM is created.
94 */
95 static JavaVMOption *options;
96 static int numOptions, maxOptions;
97
98 /*
99 * Prototypes for functions internal to launcher.
100 */
101 static void SetClassPath(const char *s);
102 static void SetMainModule(const char *s);
103 static void SelectVersion(int argc, char **argv, char **main_class);
104 static void SetJvmEnvironment(int argc, char **argv);
105 static jboolean ParseArguments(int *pargc, char ***pargv,
106 int *pmode, char **pwhat,
107 int *pret, const char *jrepath);
108 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv,
109 InvocationFunctions *ifn);
110 static jstring NewPlatformString(JNIEnv *env, char *s);
111 static jclass LoadMainClass(JNIEnv *env, int mode, char *name);
112 static jclass GetApplicationClass(JNIEnv *env);
113
114 static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv);
115 static jboolean AddApplicationOptions(int cpathc, const char **cpathv);
116 static void SetApplicationClassPath(const char**);
117
118 static void PrintJavaVersion(JNIEnv *env, jboolean extraLF);
119 static void PrintUsage(JNIEnv* env, jboolean doXUsage);
120 static void ShowSettings(JNIEnv* env, char *optString);
121 static void ListModules(JNIEnv* env, char *optString);
122
123 static void SetPaths(int argc, char **argv);
124
125 static void DumpState();
126 static jboolean RemovableOption(char *option);
127
128 enum OptionKind {
129 LAUNCHER_OPTION = 0,
130 LAUNCHER_OPTION_WITH_ARGUMENT,
131 LAUNCHER_MAIN_OPTION,
132 VM_LONG_OPTION,
133 VM_LONG_OPTION_WITH_ARGUMENT,
134 VM_OPTION
135 };
136
137 static int GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue);
138 static jboolean IsOptionWithArgument(int argc, char **argv);
139
140 /* Maximum supported entries from jvm.cfg. */
141 #define INIT_MAX_KNOWN_VMS 10
142
143 /* Values for vmdesc.flag */
144 enum vmdesc_flag {
145 VM_UNKNOWN = -1,
146 VM_KNOWN,
147 VM_ALIASED_TO,
148 VM_WARN,
149 VM_ERROR,
150 VM_IF_SERVER_CLASS,
151 VM_IGNORE
152 };
153
154 struct vmdesc {
155 char *name;
156 int flag;
157 char *alias;
158 char *server_class;
159 };
160 static struct vmdesc *knownVMs = NULL;
161 static int knownVMsCount = 0;
162 static int knownVMsLimit = 0;
163
164 static void GrowKnownVMs(int minimum);
165 static int KnownVMIndex(const char* name);
166 static void FreeKnownVMs();
167 static jboolean IsWildCardEnabled();
168
169 /*
170 * This reports error. VM will not be created and no usage is printed.
171 */
172 #define REPORT_ERROR(AC_ok, AC_failure_message, AC_questionable_arg) \
173 do { \
174 if (!AC_ok) { \
175 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
176 printUsage = JNI_FALSE; \
177 *pret = 1; \
178 return JNI_FALSE; \
179 } \
180 } while (JNI_FALSE)
181
182 #define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \
183 do { \
184 if (AC_arg_count < 1) { \
185 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
186 printUsage = JNI_TRUE; \
187 *pret = 1; \
188 return JNI_TRUE; \
189 } \
190 } while (JNI_FALSE)
191
192 /*
193 * Running Java code in primordial thread caused many problems. We will
194 * create a new thread to invoke JVM. See 6316197 for more information.
195 */
196 static jlong threadStackSize = 0; /* stack size of the new thread */
197 static jlong maxHeapSize = 0; /* max heap size */
198 static jlong initialHeapSize = 0; /* inital heap size */
199
200 /*
201 * A minimum -Xss stack size suitable for all platforms.
202 */
203 #ifndef STACK_SIZE_MINIMUM
204 #define STACK_SIZE_MINIMUM (32 * KB)
205 #endif
206
207 /*
208 * Entry point.
209 */
210 int
211 JLI_Launch(int argc, char ** argv, /* main argc, argc */
212 int jargc, const char** jargv, /* java args */
213 int appclassc, const char** appclassv, /* app classpath */
214 const char* fullversion, /* full version defined */
215 const char* dotversion, /* UNUSED dot version defined */
216 const char* pname, /* program name */
217 const char* lname, /* launcher name */
218 jboolean javaargs, /* JAVA_ARGS */
219 jboolean cpwildcard, /* classpath wildcard*/
220 jboolean javaw, /* windows-only javaw */
221 jint ergo /* ergonomics class policy */
222 )
223 {
224 int mode = LM_UNKNOWN;
225 char *what = NULL;
226 char *main_class = NULL;
227 int ret;
228 InvocationFunctions ifn;
229 jlong start, end;
230 char jvmpath[MAXPATHLEN];
231 char jrepath[MAXPATHLEN];
232 char jvmcfg[MAXPATHLEN];
233
234 _fVersion = fullversion;
235 _launcher_name = lname;
236 _program_name = pname;
237 _is_java_args = javaargs;
238 _wc_enabled = cpwildcard;
239 _ergo_policy = ergo;
240
241 InitLauncher(javaw);
242 DumpState();
243 if (JLI_IsTraceLauncher()) {
244 int i;
245 printf("Command line args:\n");
246 for (i = 0; i < argc ; i++) {
247 printf("argv[%d] = %s\n", i, argv[i]);
248 }
249 AddOption("-Dsun.java.launcher.diag=true", NULL);
250 }
251
252 /*
253 * SelectVersion() has several responsibilities:
254 *
255 * 1) Disallow specification of another JRE. With 1.9, another
256 * version of the JRE cannot be invoked.
257 * 2) Allow for a JRE version to invoke JDK 1.9 or later. Since
258 * all mJRE directives have been stripped from the request but
259 * the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been
260 * invoked from the command line.
261 */
262 SelectVersion(argc, argv, &main_class);
263
264 CreateExecutionEnvironment(&argc, &argv,
265 jrepath, sizeof(jrepath),
266 jvmpath, sizeof(jvmpath),
267 jvmcfg, sizeof(jvmcfg));
268
269 if (!IsJavaArgs()) {
270 SetJvmEnvironment(argc,argv);
271 }
272
273 ifn.CreateJavaVM = 0;
274 ifn.GetDefaultJavaVMInitArgs = 0;
275
276 if (JLI_IsTraceLauncher()) {
277 start = CounterGet();
278 }
279
280 if (!LoadJavaVM(jvmpath, &ifn)) {
281 return(6);
282 }
283
284 if (JLI_IsTraceLauncher()) {
285 end = CounterGet();
286 }
287
288 JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n",
289 (long)(jint)Counter2Micros(end-start));
290
291 ++argv;
292 --argc;
293
294 if (IsJavaArgs()) {
295 /* Preprocess wrapper arguments */
296 TranslateApplicationArgs(jargc, jargv, &argc, &argv);
297 if (!AddApplicationOptions(appclassc, appclassv)) {
298 return(1);
299 }
300 } else {
301 /* Set default CLASSPATH */
302 char* cpath = getenv("CLASSPATH");
303 if (cpath != NULL) {
304 SetClassPath(cpath);
305 }
306 }
307
308 /* Parse command line options; if the return value of
309 * ParseArguments is false, the program should exit.
310 */
311 if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath))
312 {
313 return(ret);
314 }
315
316 /* Override class path if -jar flag was specified */
317 if (mode == LM_JAR) {
318 SetClassPath(what); /* Override class path */
319 }
320
321 /* set the -Dsun.java.command pseudo property */
322 SetJavaCommandLineProp(what, argc, argv);
323
324 /* Set the -Dsun.java.launcher pseudo property */
325 SetJavaLauncherProp();
326
327 /* set the -Dsun.java.launcher.* platform properties */
328 SetJavaLauncherPlatformProps();
329
330 return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret);
331 }
332 /*
333 * Always detach the main thread so that it appears to have ended when
334 * the application's main method exits. This will invoke the
335 * uncaught exception handler machinery if main threw an
336 * exception. An uncaught exception handler cannot change the
337 * launcher's return code except by calling System.exit.
338 *
339 * Wait for all non-daemon threads to end, then destroy the VM.
340 * This will actually create a trivial new Java waiter thread
341 * named "DestroyJavaVM", but this will be seen as a different
342 * thread from the one that executed main, even though they are
343 * the same C thread. This allows mainThread.join() and
344 * mainThread.isAlive() to work as expected.
345 */
346 #define LEAVE() \
347 do { \
348 if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \
349 JLI_ReportErrorMessage(JVM_ERROR2); \
350 ret = 1; \
351 } \
352 if (JNI_TRUE) { \
353 (*vm)->DestroyJavaVM(vm); \
354 return ret; \
355 } \
356 } while (JNI_FALSE)
357
358 #define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \
359 do { \
360 if ((*env)->ExceptionOccurred(env)) { \
361 JLI_ReportExceptionDescription(env); \
362 LEAVE(); \
363 } \
364 if ((CENL_exception) == NULL) { \
365 JLI_ReportErrorMessage(JNI_ERROR); \
366 LEAVE(); \
367 } \
368 } while (JNI_FALSE)
369
370 #define CHECK_EXCEPTION_LEAVE(CEL_return_value) \
371 do { \
372 if ((*env)->ExceptionOccurred(env)) { \
373 JLI_ReportExceptionDescription(env); \
374 ret = (CEL_return_value); \
375 LEAVE(); \
376 } \
377 } while (JNI_FALSE)
378
379
380 int JNICALL
381 JavaMain(void * _args)
382 {
383 JavaMainArgs *args = (JavaMainArgs *)_args;
384 int argc = args->argc;
385 char **argv = args->argv;
386 int mode = args->mode;
387 char *what = args->what;
388 InvocationFunctions ifn = args->ifn;
389
390 JavaVM *vm = 0;
391 JNIEnv *env = 0;
392 jclass mainClass = NULL;
393 jclass appClass = NULL; // actual application class being launched
394 jmethodID mainID;
395 jobjectArray mainArgs;
396 int ret = 0;
397 jlong start, end;
398
399 RegisterThread();
400
401 /* Initialize the virtual machine */
402 start = CounterGet();
403 if (!InitializeJVM(&vm, &env, &ifn)) {
404 JLI_ReportErrorMessage(JVM_ERROR1);
405 exit(1);
406 }
407
408 if (showSettings != NULL) {
409 ShowSettings(env, showSettings);
410 CHECK_EXCEPTION_LEAVE(1);
411 }
412
413 if (listModules != NULL) {
414 ListModules(env, listModules);
415 CHECK_EXCEPTION_LEAVE(1);
416 LEAVE();
417 }
418
419 if (printVersion || showVersion) {
420 PrintJavaVersion(env, showVersion);
421 CHECK_EXCEPTION_LEAVE(0);
422 if (printVersion) {
423 LEAVE();
424 }
425 }
426
427 /* If the user specified neither a class name nor a JAR file */
428 if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) {
429 PrintUsage(env, printXUsage);
430 CHECK_EXCEPTION_LEAVE(1);
431 LEAVE();
432 }
433
434 FreeKnownVMs(); /* after last possible PrintUsage() */
435
436 if (JLI_IsTraceLauncher()) {
437 end = CounterGet();
438 JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n",
439 (long)(jint)Counter2Micros(end-start));
440 }
441
442 /* At this stage, argc/argv have the application's arguments */
443 if (JLI_IsTraceLauncher()){
444 int i;
445 printf("%s is '%s'\n", launchModeNames[mode], what);
446 printf("App's argc is %d\n", argc);
447 for (i=0; i < argc; i++) {
448 printf(" argv[%2d] = '%s'\n", i, argv[i]);
449 }
450 }
451
452 ret = 1;
453
454 /*
455 * Get the application's main class. It also checks if the main
456 * method exists.
457 *
458 * See bugid 5030265. The Main-Class name has already been parsed
459 * from the manifest, but not parsed properly for UTF-8 support.
460 * Hence the code here ignores the value previously extracted and
461 * uses the pre-existing code to reextract the value. This is
462 * possibly an end of release cycle expedient. However, it has
463 * also been discovered that passing some character sets through
464 * the environment has "strange" behavior on some variants of
465 * Windows. Hence, maybe the manifest parsing code local to the
466 * launcher should never be enhanced.
467 *
468 * Hence, future work should either:
469 * 1) Correct the local parsing code and verify that the
470 * Main-Class attribute gets properly passed through
471 * all environments,
472 * 2) Remove the vestages of maintaining main_class through
473 * the environment (and remove these comments).
474 *
475 * This method also correctly handles launching existing JavaFX
476 * applications that may or may not have a Main-Class manifest entry.
477 */
478 mainClass = LoadMainClass(env, mode, what);
479 CHECK_EXCEPTION_NULL_LEAVE(mainClass);
480 /*
481 * In some cases when launching an application that needs a helper, e.g., a
482 * JavaFX application with no main method, the mainClass will not be the
483 * applications own main class but rather a helper class. To keep things
484 * consistent in the UI we need to track and report the application main class.
485 */
486 appClass = GetApplicationClass(env);
487 NULL_CHECK_RETURN_VALUE(appClass, -1);
488
489 /* Build platform specific argument array */
490 mainArgs = CreateApplicationArgs(env, argv, argc);
491 CHECK_EXCEPTION_NULL_LEAVE(mainArgs);
492
493 if (dryRun) {
494 ret = 0;
495 LEAVE();
496 }
497
498 /*
499 * PostJVMInit uses the class name as the application name for GUI purposes,
500 * for example, on OSX this sets the application name in the menu bar for
501 * both SWT and JavaFX. So we'll pass the actual application class here
502 * instead of mainClass as that may be a launcher or helper class instead
503 * of the application class.
504 */
505 PostJVMInit(env, appClass, vm);
506 CHECK_EXCEPTION_LEAVE(1);
507
508 /*
509 * The LoadMainClass not only loads the main class, it will also ensure
510 * that the main method's signature is correct, therefore further checking
511 * is not required. The main method is invoked here so that extraneous java
512 * stacks are not in the application stack trace.
513 */
514 mainID = (*env)->GetStaticMethodID(env, mainClass, "main",
515 "([Ljava/lang/String;)V");
516 CHECK_EXCEPTION_NULL_LEAVE(mainID);
517
518 /* Invoke main method. */
519 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs);
520
521 /*
522 * The launcher's exit code (in the absence of calls to
523 * System.exit) will be non-zero if main threw an exception.
524 */
525 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1;
526
527 LEAVE();
528 }
529
530 /*
531 * Test if the given name is one of the class path options.
532 */
533 static jboolean
534 IsClassPathOption(const char* name) {
535 return JLI_StrCmp(name, "-classpath") == 0 ||
536 JLI_StrCmp(name, "-cp") == 0 ||
537 JLI_StrCmp(name, "--class-path") == 0;
538 }
539
540 /*
541 * Test if the given name is a launcher option taking the main entry point.
542 */
543 static jboolean
544 IsLauncherMainOption(const char* name) {
545 return JLI_StrCmp(name, "--module") == 0 ||
546 JLI_StrCmp(name, "-m") == 0;
547 }
548
549 /*
550 * Test if the given name is a white-space launcher option.
551 */
552 static jboolean
553 IsLauncherOption(const char* name) {
554 return IsClassPathOption(name) ||
555 IsLauncherMainOption(name) ||
556 JLI_StrCmp(name, "--list-modules") == 0;
557 }
558
559 #ifndef OLD_MODULE_OPTIONS
560 /*
561 * Old module options for transition
562 */
563 static jboolean
564 IsOldModuleOption(const char* name) {
565 return JLI_StrCmp(name, "-modulepath") == 0 ||
566 JLI_StrCmp(name, "-mp") == 0 ||
567 JLI_StrCmp(name, "-upgrademodulepath") == 0 ||
568 JLI_StrCmp(name, "-addmods") == 0 ||
569 JLI_StrCmp(name, "-limitmods") == 0;
570 }
571 #endif
572
573 /*
574 * Test if the given name is a module-system white-space option that
575 * will be passed to the VM with its corresponding long-form option
576 * name and "=" delimiter.
577 */
578 static jboolean
579 IsModuleOption(const char* name) {
580 return JLI_StrCmp(name, "--module-path") == 0 ||
581 JLI_StrCmp(name, "-p") == 0 ||
582 JLI_StrCmp(name, "--upgrade-module-path") == 0 ||
583 JLI_StrCmp(name, "--add-modules") == 0 ||
584 JLI_StrCmp(name, "--limit-modules") == 0 ||
585 JLI_StrCmp(name, "--add-exports") == 0 ||
586 JLI_StrCmp(name, "--add-reads") == 0 ||
587 JLI_StrCmp(name, "--patch-module") == 0 ||
588 IsOldModuleOption(name);
589 }
590
591 /*
592 * Test if the given name has a white space option.
593 */
594 jboolean
595 IsWhiteSpaceOption(const char* name) {
596 return IsModuleOption(name) ||
597 IsLauncherOption(name);
598 }
599
600 /*
601 * Checks the command line options to find which JVM type was
602 * specified. If no command line option was given for the JVM type,
603 * the default type is used. The environment variable
604 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
605 * checked as ways of specifying which JVM type to invoke.
606 */
607 char *
608 CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
609 int i, argi;
610 int argc;
611 char **newArgv;
612 int newArgvIdx = 0;
613 int isVMType;
614 int jvmidx = -1;
615 char *jvmtype = getenv("JDK_ALTERNATE_VM");
616
617 argc = *pargc;
618
619 /* To make things simpler we always copy the argv array */
620 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *));
621
622 /* The program name is always present */
623 newArgv[newArgvIdx++] = (*argv)[0];
624
625 for (argi = 1; argi < argc; argi++) {
626 char *arg = (*argv)[argi];
627 isVMType = 0;
628
629 if (IsJavaArgs()) {
630 if (arg[0] != '-') {
631 newArgv[newArgvIdx++] = arg;
632 continue;
633 }
634 } else {
635 if (IsWhiteSpaceOption(arg)) {
636 newArgv[newArgvIdx++] = arg;
637 argi++;
638 if (argi < argc) {
639 newArgv[newArgvIdx++] = (*argv)[argi];
640 }
641 continue;
642 }
643 if (arg[0] != '-') break;
644 }
645
646 /* Did the user pass an explicit VM type? */
647 i = KnownVMIndex(arg);
648 if (i >= 0) {
649 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
650 isVMType = 1;
651 *pargc = *pargc - 1;
652 }
653
654 /* Did the user specify an "alternate" VM? */
655 else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) {
656 isVMType = 1;
657 jvmtype = arg+((arg[1]=='X')? 10 : 12);
658 jvmidx = -1;
659 }
660
661 if (!isVMType) {
662 newArgv[newArgvIdx++] = arg;
663 }
664 }
665
666 /*
667 * Finish copying the arguments if we aborted the above loop.
668 * NOTE that if we aborted via "break" then we did NOT copy the
669 * last argument above, and in addition argi will be less than
670 * argc.
671 */
672 while (argi < argc) {
673 newArgv[newArgvIdx++] = (*argv)[argi];
674 argi++;
675 }
676
677 /* argv is null-terminated */
678 newArgv[newArgvIdx] = 0;
679
680 /* Copy back argv */
681 *argv = newArgv;
682 *pargc = newArgvIdx;
683
684 /* use the default VM type if not specified (no alias processing) */
685 if (jvmtype == NULL) {
686 char* result = knownVMs[0].name+1;
687 /* Use a different VM type if we are on a server class machine? */
688 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) &&
689 (ServerClassMachine() == JNI_TRUE)) {
690 result = knownVMs[0].server_class+1;
691 }
692 JLI_TraceLauncher("Default VM: %s\n", result);
693 return result;
694 }
695
696 /* if using an alternate VM, no alias processing */
697 if (jvmidx < 0)
698 return jvmtype;
699
700 /* Resolve aliases first */
701 {
702 int loopCount = 0;
703 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
704 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
705
706 if (loopCount > knownVMsCount) {
707 if (!speculative) {
708 JLI_ReportErrorMessage(CFG_ERROR1);
709 exit(1);
710 } else {
711 return "ERROR";
712 /* break; */
713 }
714 }
715
716 if (nextIdx < 0) {
717 if (!speculative) {
718 JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias);
719 exit(1);
720 } else {
721 return "ERROR";
722 }
723 }
724 jvmidx = nextIdx;
725 jvmtype = knownVMs[jvmidx].name+1;
726 loopCount++;
727 }
728 }
729
730 switch (knownVMs[jvmidx].flag) {
731 case VM_WARN:
732 if (!speculative) {
733 JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1);
734 }
735 /* fall through */
736 case VM_IGNORE:
737 jvmtype = knownVMs[jvmidx=0].name + 1;
738 /* fall through */
739 case VM_KNOWN:
740 break;
741 case VM_ERROR:
742 if (!speculative) {
743 JLI_ReportErrorMessage(CFG_ERROR3, jvmtype);
744 exit(1);
745 } else {
746 return "ERROR";
747 }
748 }
749
750 return jvmtype;
751 }
752
753 /*
754 * static void SetJvmEnvironment(int argc, char **argv);
755 * Is called just before the JVM is loaded. We can set env variables
756 * that are consumed by the JVM. This function is non-destructive,
757 * leaving the arg list intact. The first use is for the JVM flag
758 * -XX:NativeMemoryTracking=value.
759 */
760 static void
761 SetJvmEnvironment(int argc, char **argv) {
762
763 static const char* NMT_Env_Name = "NMT_LEVEL_";
764 int i;
765 for (i = 0; i < argc; i++) {
766 char *arg = argv[i];
767 /*
768 * Since this must be a VM flag we stop processing once we see
769 * an argument the launcher would not have processed beyond (such
770 * as -version or -h), or an argument that indicates the following
771 * arguments are for the application (i.e. the main class name, or
772 * the -jar argument).
773 */
774 if (i > 0) {
775 char *prev = argv[i - 1];
776 // skip non-dash arg preceded by class path specifiers
777 if (*arg != '-' && IsWhiteSpaceOption(prev)) {
778 continue;
779 }
780
781 if (*arg != '-'
782 || JLI_StrCmp(arg, "-version") == 0
783 || JLI_StrCmp(arg, "-fullversion") == 0
784 || JLI_StrCmp(arg, "-help") == 0
785 || JLI_StrCmp(arg, "--help") == 0
786 || JLI_StrCmp(arg, "-?") == 0
787 || JLI_StrCmp(arg, "-jar") == 0
788 || JLI_StrCmp(arg, "-X") == 0) {
789 return;
790 }
791 }
792 /*
793 * The following case checks for "-XX:NativeMemoryTracking=value".
794 * If value is non null, an environmental variable set to this value
795 * will be created to be used by the JVM.
796 * The argument is passed to the JVM, which will check validity.
797 * The JVM is responsible for removing the env variable.
798 */
799 if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) {
800 int retval;
801 // get what follows this parameter, include "="
802 size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking=");
803 if (JLI_StrLen(arg) > pnlen) {
804 char* value = arg + pnlen;
805 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits
806
807 /*
808 * ensures that malloc successful
809 * DONT JLI_MemFree() pbuf. JLI_PutEnv() uses system call
810 * that could store the address.
811 */
812 char * pbuf = (char*)JLI_MemAlloc(pbuflen);
813
814 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value);
815 retval = JLI_PutEnv(pbuf);
816 if (JLI_IsTraceLauncher()) {
817 char* envName;
818 char* envBuf;
819
820 // ensures that malloc successful
821 envName = (char*)JLI_MemAlloc(pbuflen);
822 JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid());
823
824 printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName);
825 printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf);
826 envBuf = getenv(envName);
827 printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf);
828 free(envName);
829 }
830
831 }
832
833 }
834
835 }
836 }
837
838 /* copied from HotSpot function "atomll()" */
839 static int
840 parse_size(const char *s, jlong *result) {
841 jlong n = 0;
842 int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n);
843 if (args_read != 1) {
844 return 0;
845 }
846 while (*s != '\0' && *s >= '0' && *s <= '9') {
847 s++;
848 }
849 // 4705540: illegal if more characters are found after the first non-digit
850 if (JLI_StrLen(s) > 1) {
851 return 0;
852 }
853 switch (*s) {
854 case 'T': case 't':
855 *result = n * GB * KB;
856 return 1;
857 case 'G': case 'g':
858 *result = n * GB;
859 return 1;
860 case 'M': case 'm':
861 *result = n * MB;
862 return 1;
863 case 'K': case 'k':
864 *result = n * KB;
865 return 1;
866 case '\0':
867 *result = n;
868 return 1;
869 default:
870 /* Create JVM with default stack and let VM handle malformed -Xss string*/
871 return 0;
872 }
873 }
874
875 /*
876 * Adds a new VM option with the given name and value.
877 */
878 void
879 AddOption(char *str, void *info)
880 {
881 /*
882 * Expand options array if needed to accommodate at least one more
883 * VM option.
884 */
885 if (numOptions >= maxOptions) {
886 if (options == 0) {
887 maxOptions = 4;
888 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
889 } else {
890 JavaVMOption *tmp;
891 maxOptions *= 2;
892 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
893 memcpy(tmp, options, numOptions * sizeof(JavaVMOption));
894 JLI_MemFree(options);
895 options = tmp;
896 }
897 }
898 options[numOptions].optionString = str;
899 options[numOptions++].extraInfo = info;
900
901 if (JLI_StrCCmp(str, "-Xss") == 0) {
902 jlong tmp;
903 if (parse_size(str + 4, &tmp)) {
904 threadStackSize = tmp;
905 /*
906 * Make sure the thread stack size is big enough that we won't get a stack
907 * overflow before the JVM startup code can check to make sure the stack
908 * is big enough.
909 */
910 if (threadStackSize < (jlong)STACK_SIZE_MINIMUM) {
911 threadStackSize = STACK_SIZE_MINIMUM;
912 }
913 }
914 }
915
916 if (JLI_StrCCmp(str, "-Xmx") == 0) {
917 jlong tmp;
918 if (parse_size(str + 4, &tmp)) {
919 maxHeapSize = tmp;
920 }
921 }
922
923 if (JLI_StrCCmp(str, "-Xms") == 0) {
924 jlong tmp;
925 if (parse_size(str + 4, &tmp)) {
926 initialHeapSize = tmp;
927 }
928 }
929 }
930
931 static void
932 SetClassPath(const char *s)
933 {
934 char *def;
935 const char *orig = s;
936 static const char format[] = "-Djava.class.path=%s";
937 /*
938 * usually we should not get a null pointer, but there are cases where
939 * we might just get one, in which case we simply ignore it, and let the
940 * caller deal with it
941 */
942 if (s == NULL)
943 return;
944 s = JLI_WildcardExpandClasspath(s);
945 if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s))
946 // s is became corrupted after expanding wildcards
947 return;
948 def = JLI_MemAlloc(sizeof(format)
949 - 2 /* strlen("%s") */
950 + JLI_StrLen(s));
951 sprintf(def, format, s);
952 AddOption(def, NULL);
953 if (s != orig)
954 JLI_MemFree((char *) s);
955 _have_classpath = JNI_TRUE;
956 }
957
958 static void
959 AddLongFormOption(const char *option, const char *arg)
960 {
961 static const char format[] = "%s=%s";
962 char *def;
963 size_t def_len;
964
965 def_len = JLI_StrLen(option)+1+JLI_StrLen(arg)+1;
966 def = JLI_MemAlloc(def_len);
967 JLI_Snprintf(def, def_len, format, option, arg);
968 AddOption(def, NULL);
969 }
970
971 static void
972 SetMainModule(const char *s)
973 {
974 static const char format[] = "-Djdk.module.main=%s";
975 char* slash = JLI_StrChr(s, '/');
976 size_t s_len, def_len;
977 char *def;
978
979 /* value may be <module> or <module>/<mainclass> */
980 if (slash == NULL) {
981 s_len = JLI_StrLen(s);
982 } else {
983 s_len = (size_t) (slash - s);
984 }
985 def_len = sizeof(format)
986 - 2 /* strlen("%s") */
987 + s_len;
988 def = JLI_MemAlloc(def_len);
989 JLI_Snprintf(def, def_len, format, s);
990 AddOption(def, NULL);
991 }
992
993 /*
994 * The SelectVersion() routine ensures that an appropriate version of
995 * the JRE is running. The specification for the appropriate version
996 * is obtained from either the manifest of a jar file (preferred) or
997 * from command line options.
998 * The routine also parses splash screen command line options and
999 * passes on their values in private environment variables.
1000 */
1001 static void
1002 SelectVersion(int argc, char **argv, char **main_class)
1003 {
1004 char *arg;
1005 char *operand;
1006 char *version = NULL;
1007 char *jre = NULL;
1008 int jarflag = 0;
1009 int headlessflag = 0;
1010 int restrict_search = -1; /* -1 implies not known */
1011 manifest_info info;
1012 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
1013 char *splash_file_name = NULL;
1014 char *splash_jar_name = NULL;
1015 char *env_in;
1016 int res;
1017 jboolean has_arg;
1018
1019 /*
1020 * If the version has already been selected, set *main_class
1021 * with the value passed through the environment (if any) and
1022 * simply return.
1023 */
1024
1025 /*
1026 * This environmental variable can be set by mJRE capable JREs
1027 * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been
1028 * stripped by those JREs. This environmental variable allows 1.9+
1029 * JREs to be started by these mJRE capable JREs.
1030 * Note that mJRE directives in the jar manifest file would have been
1031 * ignored for a JRE started by another JRE...
1032 * .. skipped for JRE 1.5 and beyond.
1033 * .. not even checked for pre 1.5.
1034 */
1035 if ((env_in = getenv(ENV_ENTRY)) != NULL) {
1036 if (*env_in != '\0')
1037 *main_class = JLI_StringDup(env_in);
1038 return;
1039 }
1040
1041 /*
1042 * Scan through the arguments for options relevant to multiple JRE
1043 * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8.
1044 *
1045 * This capability is no longer available with JRE versions 1.9 and later.
1046 * These command line options are reported as errors.
1047 */
1048
1049 argc--;
1050 argv++;
1051 while ((arg = *argv) != 0 && *arg == '-') {
1052 has_arg = IsOptionWithArgument(argc, argv);
1053 if (JLI_StrCCmp(arg, "-version:") == 0) {
1054 JLI_ReportErrorMessage(SPC_ERROR1);
1055 } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) {
1056 JLI_ReportErrorMessage(SPC_ERROR2);
1057 } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) {
1058 JLI_ReportErrorMessage(SPC_ERROR2);
1059 } else {
1060 if (JLI_StrCmp(arg, "-jar") == 0)
1061 jarflag = 1;
1062 if (IsWhiteSpaceOption(arg)) {
1063 if (has_arg) {
1064 argc--;
1065 argv++;
1066 arg = *argv;
1067 }
1068 }
1069
1070 /*
1071 * Checking for headless toolkit option in the some way as AWT does:
1072 * "true" means true and any other value means false
1073 */
1074 if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) {
1075 headlessflag = 1;
1076 } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) {
1077 headlessflag = 0;
1078 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1079 splash_file_name = arg+8;
1080 }
1081 }
1082 argc--;
1083 argv++;
1084 }
1085 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
1086 operand = NULL;
1087 } else {
1088 argc--;
1089 operand = *argv++;
1090 }
1091
1092 /*
1093 * If there is a jar file, read the manifest. If the jarfile can't be
1094 * read, the manifest can't be read from the jar file, or the manifest
1095 * is corrupt, issue the appropriate error messages and exit.
1096 *
1097 * Even if there isn't a jar file, construct a manifest_info structure
1098 * containing the command line information. It's a convenient way to carry
1099 * this data around.
1100 */
1101 if (jarflag && operand) {
1102 if ((res = JLI_ParseManifest(operand, &info)) != 0) {
1103 if (res == -1)
1104 JLI_ReportErrorMessage(JAR_ERROR2, operand);
1105 else
1106 JLI_ReportErrorMessage(JAR_ERROR3, operand);
1107 exit(1);
1108 }
1109
1110 /*
1111 * Command line splash screen option should have precedence
1112 * over the manifest, so the manifest data is used only if
1113 * splash_file_name has not been initialized above during command
1114 * line parsing
1115 */
1116 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) {
1117 splash_file_name = info.splashscreen_image_file_name;
1118 splash_jar_name = operand;
1119 }
1120 } else {
1121 info.manifest_version = NULL;
1122 info.main_class = NULL;
1123 info.jre_version = NULL;
1124 info.jre_restrict_search = 0;
1125 }
1126
1127 /*
1128 * Passing on splash screen info in environment variables
1129 */
1130 if (splash_file_name && !headlessflag) {
1131 char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1);
1132 JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "=");
1133 JLI_StrCat(splash_file_entry, splash_file_name);
1134 putenv(splash_file_entry);
1135 }
1136 if (splash_jar_name && !headlessflag) {
1137 char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1);
1138 JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
1139 JLI_StrCat(splash_jar_entry, splash_jar_name);
1140 putenv(splash_jar_entry);
1141 }
1142
1143
1144 /*
1145 * "Valid" returns (other than unrecoverable errors) follow. Set
1146 * main_class as a side-effect of this routine.
1147 */
1148 if (info.main_class != NULL)
1149 *main_class = JLI_StringDup(info.main_class);
1150
1151 if (info.jre_version == NULL) {
1152 JLI_FreeManifest();
1153 return;
1154 }
1155
1156 }
1157
1158 /*
1159 * Test if the current argv is an option, i.e. with a leading `-`
1160 * and followed with an argument without a leading `-`.
1161 */
1162 static jboolean
1163 IsOptionWithArgument(int argc, char** argv) {
1164 char* option;
1165 char* arg;
1166
1167 if (argc <= 1)
1168 return JNI_FALSE;
1169
1170 option = *argv;
1171 arg = *(argv+1);
1172 return *option == '-' && *arg != '-';
1173 }
1174
1175 /*
1176 * Gets the option, and its argument if the option has an argument.
1177 * It will update *pargc, **pargv to the next option.
1178 */
1179 static int
1180 GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) {
1181 int argc = *pargc;
1182 char** argv = *pargv;
1183 char* arg = *argv;
1184
1185 char* option = arg;
1186 char* value = NULL;
1187 char* equals = NULL;
1188 int kind = LAUNCHER_OPTION;
1189 jboolean has_arg = JNI_FALSE;
1190
1191 // check if this option may be a white-space option with an argument
1192 has_arg = IsOptionWithArgument(argc, argv);
1193
1194 argv++; --argc;
1195 if (IsLauncherOption(arg)) {
1196 if (has_arg) {
1197 value = *argv;
1198 argv++; --argc;
1199 }
1200 if (IsLauncherMainOption(arg)) {
1201 kind = LAUNCHER_MAIN_OPTION;
1202 } else {
1203 kind = LAUNCHER_OPTION_WITH_ARGUMENT;
1204 }
1205 } else if (IsModuleOption(arg)) {
1206 kind = VM_LONG_OPTION_WITH_ARGUMENT;
1207 if (has_arg) {
1208 value = *argv;
1209 argv++; --argc;
1210 }
1211
1212 /*
1213 * Support short form alias
1214 */
1215 if (JLI_StrCmp(arg, "-p") == 0) {
1216 option = "--module-path";
1217 }
1218
1219 } else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) {
1220 value = equals+1;
1221 if (JLI_StrCCmp(arg, "--list-modules=") == 0 ||
1222 JLI_StrCCmp(arg, "--module=") == 0 ||
1223 JLI_StrCCmp(arg, "--class-path=") == 0) {
1224 kind = LAUNCHER_OPTION_WITH_ARGUMENT;
1225 } else {
1226 kind = VM_LONG_OPTION;
1227 }
1228 }
1229
1230 #ifndef OLD_MODULE_OPTIONS
1231 // for transition to support both old and new syntax
1232 if (JLI_StrCmp(arg, "-modulepath") == 0 ||
1233 JLI_StrCmp(arg, "-mp") == 0) {
1234 option = "--module-path";
1235 } else if (JLI_StrCmp(arg, "-upgrademodulepath") == 0) {
1236 option = "--upgrade-module-path";
1237 } else if (JLI_StrCmp(arg, "-addmods") == 0) {
1238 option = "--add-modules";
1239 } else if (JLI_StrCmp(arg, "-limitmods") == 0) {
1240 option = "--limit-modules";
1241 } else if (JLI_StrCCmp(arg, "-XaddExports:") == 0) {
1242 option = "--add-exports";
1243 value = arg + 13;
1244 kind = VM_LONG_OPTION_WITH_ARGUMENT;
1245 } else if (JLI_StrCCmp(arg, "-XaddReads:") == 0) {
1246 option = "--add-reads";
1247 value = arg + 11;
1248 kind = VM_LONG_OPTION_WITH_ARGUMENT;
1249 } else if (JLI_StrCCmp(arg, "-Xpatch:") == 0) {
1250 option = "--patch-module";
1251 value = arg + 8;
1252 kind = VM_LONG_OPTION_WITH_ARGUMENT;
1253 }
1254 #endif
1255
1256 *pargc = argc;
1257 *pargv = argv;
1258 *poption = option;
1259 *pvalue = value;
1260 return kind;
1261 }
1262
1263 /*
1264 * Parses command line arguments. Returns JNI_FALSE if launcher
1265 * should exit without starting vm, returns JNI_TRUE if vm needs
1266 * to be started to process given options. *pret (the launcher
1267 * process return value) is set to 0 for a normal exit.
1268 */
1269 static jboolean
1270 ParseArguments(int *pargc, char ***pargv,
1271 int *pmode, char **pwhat,
1272 int *pret, const char *jrepath)
1273 {
1274 int argc = *pargc;
1275 char **argv = *pargv;
1276 int mode = LM_UNKNOWN;
1277 char *arg;
1278
1279 *pret = 0;
1280
1281 while ((arg = *argv) != 0 && *arg == '-') {
1282 char *option = NULL;
1283 char *value = NULL;
1284 int kind = GetOpt(&argc, &argv, &option, &value);
1285 jboolean has_arg = value != NULL;
1286
1287 /*
1288 * Option to set main entry point
1289 */
1290 if (JLI_StrCmp(arg, "-jar") == 0) {
1291 ARG_CHECK(argc, ARG_ERROR2, arg);
1292 mode = LM_JAR;
1293 } else if (JLI_StrCmp(arg, "--module") == 0 ||
1294 JLI_StrCCmp(arg, "--module=") == 0 ||
1295 JLI_StrCmp(arg, "-m") == 0) {
1296 REPORT_ERROR (has_arg, ARG_ERROR5, arg);
1297 SetMainModule(value);
1298 mode = LM_MODULE;
1299 if (has_arg) {
1300 *pwhat = value;
1301 break;
1302 }
1303 } else if (JLI_StrCmp(arg, "--class-path") == 0 ||
1304 JLI_StrCCmp(arg, "--class-path=") == 0 ||
1305 JLI_StrCmp(arg, "-classpath") == 0 ||
1306 JLI_StrCmp(arg, "-cp") == 0) {
1307 REPORT_ERROR (has_arg, ARG_ERROR1, arg);
1308 SetClassPath(value);
1309 mode = LM_CLASS;
1310 } else if (JLI_StrCmp(arg, "--list-modules") == 0 ||
1311 JLI_StrCCmp(arg, "--list-modules=") == 0) {
1312 listModules = arg;
1313
1314 // set listModules to --list-modules=<module-names> if argument is specified
1315 if (JLI_StrCmp(arg, "--list-modules") == 0 && has_arg) {
1316 static const char format[] = "%s=%s";
1317 size_t buflen = JLI_StrLen(option)+2+JLI_StrLen(value);
1318 listModules = JLI_MemAlloc(buflen);
1319 JLI_Snprintf(listModules, buflen, format, option, value);
1320 }
1321 return JNI_TRUE;
1322 /*
1323 * Parse white-space options
1324 */
1325 } else if (has_arg) {
1326 if (kind == VM_LONG_OPTION) {
1327 AddOption(option, NULL);
1328 } else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) {
1329 AddLongFormOption(option, value);
1330 }
1331 /*
1332 * Error missing argument
1333 */
1334 } else if (!has_arg && IsWhiteSpaceOption(arg)) {
1335 if (JLI_StrCmp(arg, "--module-path") == 0 ||
1336 JLI_StrCmp(arg, "-p") == 0 ||
1337 JLI_StrCmp(arg, "--upgrade-module-path") == 0) {
1338 REPORT_ERROR (has_arg, ARG_ERROR4, arg);
1339 } else if (JLI_StrCmp(arg, "--add-modules") == 0 ||
1340 JLI_StrCmp(arg, "--limit-modules") == 0 ||
1341 JLI_StrCmp(arg, "--add-exports") == 0 ||
1342 JLI_StrCmp(arg, "--add-reads") == 0 ||
1343 JLI_StrCmp(arg, "--patch-module") == 0) {
1344 REPORT_ERROR (has_arg, ARG_ERROR6, arg);
1345 }
1346 #ifndef OLD_MODULE_OPTIONS
1347 else if (JLI_StrCmp(arg, "-modulepath") == 0 ||
1348 JLI_StrCmp(arg, "-mp") == 0 ||
1349 JLI_StrCmp(arg, "-upgrademodulepath") == 0) {
1350 REPORT_ERROR (has_arg, ARG_ERROR4, arg);
1351 } else if (JLI_StrCmp(arg, "-addmods") == 0 ||
1352 JLI_StrCmp(arg, "-limitmods") == 0) {
1353 REPORT_ERROR (has_arg, ARG_ERROR6, arg);
1354 }
1355 #endif
1356 /*
1357 * The following cases will cause the argument parsing to stop
1358 */
1359 } else if (JLI_StrCmp(arg, "--help") == 0 ||
1360 JLI_StrCmp(arg, "-help") == 0 ||
1361 JLI_StrCmp(arg, "-h") == 0 ||
1362 JLI_StrCmp(arg, "-?") == 0) {
1363 printUsage = JNI_TRUE;
1364 return JNI_TRUE;
1365 } else if (JLI_StrCmp(arg, "-version") == 0) {
1366 printVersion = JNI_TRUE;
1367 return JNI_TRUE;
1368 } else if (JLI_StrCmp(arg, "-showversion") == 0) {
1369 showVersion = JNI_TRUE;
1370 } else if (JLI_StrCmp(arg, "--dry-run") == 0) {
1371 dryRun = JNI_TRUE;
1372 } else if (JLI_StrCmp(arg, "-X") == 0) {
1373 printXUsage = JNI_TRUE;
1374 return JNI_TRUE;
1375 /*
1376 * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT.
1377 * In the latter case, any SUBOPT value not recognized will default to "all"
1378 */
1379 } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 ||
1380 JLI_StrCCmp(arg, "-XshowSettings:") == 0) {
1381 showSettings = arg;
1382 } else if (JLI_StrCmp(arg, "-Xdiag") == 0) {
1383 AddOption("-Dsun.java.launcher.diag=true", NULL);
1384 AddOption("-Djdk.launcher.traceResolver=true", NULL);
1385 } else if (JLI_StrCmp(arg, "-Xdiag:resolver") == 0) {
1386 AddOption("-Djdk.launcher.traceResolver=true", NULL);
1387 /*
1388 * The following case provide backward compatibility with old-style
1389 * command line options.
1390 */
1391 } else if (JLI_StrCmp(arg, "-fullversion") == 0) {
1392 JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion());
1393 return JNI_FALSE;
1394 } else if (JLI_StrCmp(arg, "-verbosegc") == 0) {
1395 AddOption("-verbose:gc", NULL);
1396 } else if (JLI_StrCmp(arg, "-t") == 0) {
1397 AddOption("-Xt", NULL);
1398 } else if (JLI_StrCmp(arg, "-tm") == 0) {
1399 AddOption("-Xtm", NULL);
1400 } else if (JLI_StrCmp(arg, "-debug") == 0) {
1401 AddOption("-Xdebug", NULL);
1402 } else if (JLI_StrCmp(arg, "-noclassgc") == 0) {
1403 AddOption("-Xnoclassgc", NULL);
1404 } else if (JLI_StrCmp(arg, "-Xfuture") == 0) {
1405 AddOption("-Xverify:all", NULL);
1406 } else if (JLI_StrCmp(arg, "-verify") == 0) {
1407 AddOption("-Xverify:all", NULL);
1408 } else if (JLI_StrCmp(arg, "-verifyremote") == 0) {
1409 AddOption("-Xverify:remote", NULL);
1410 } else if (JLI_StrCmp(arg, "-noverify") == 0) {
1411 AddOption("-Xverify:none", NULL);
1412 } else if (JLI_StrCCmp(arg, "-ss") == 0 ||
1413 JLI_StrCCmp(arg, "-oss") == 0 ||
1414 JLI_StrCCmp(arg, "-ms") == 0 ||
1415 JLI_StrCCmp(arg, "-mx") == 0) {
1416 char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6);
1417 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
1418 AddOption(tmp, NULL);
1419 } else if (JLI_StrCmp(arg, "-checksource") == 0 ||
1420 JLI_StrCmp(arg, "-cs") == 0 ||
1421 JLI_StrCmp(arg, "-noasyncgc") == 0) {
1422 /* No longer supported */
1423 JLI_ReportErrorMessage(ARG_WARN, arg);
1424 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1425 ; /* Ignore machine independent options already handled */
1426 } else if (ProcessPlatformOption(arg)) {
1427 ; /* Processing of platform dependent options */
1428 } else if (RemovableOption(arg)) {
1429 ; /* Do not pass option to vm. */
1430 } else {
1431 /* java.class.path set on the command line */
1432 if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) {
1433 _have_classpath = JNI_TRUE;
1434 }
1435 AddOption(arg, NULL);
1436 }
1437 }
1438
1439 if (*pwhat == NULL && --argc >= 0) {
1440 *pwhat = *argv++;
1441 }
1442
1443 if (*pwhat == NULL) {
1444 *pret = 1;
1445 } else if (mode == LM_UNKNOWN) {
1446 /* default to LM_CLASS if -m, -jar and -cp options are
1447 * not specified */
1448 if (!_have_classpath) {
1449 SetClassPath(".");
1450 }
1451 mode = LM_CLASS;
1452 }
1453
1454 if (argc >= 0) {
1455 *pargc = argc;
1456 *pargv = argv;
1457 }
1458
1459 *pmode = mode;
1460
1461 return JNI_TRUE;
1462 }
1463
1464 /*
1465 * Initializes the Java Virtual Machine. Also frees options array when
1466 * finished.
1467 */
1468 static jboolean
1469 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn)
1470 {
1471 JavaVMInitArgs args;
1472 jint r;
1473
1474 memset(&args, 0, sizeof(args));
1475 args.version = JNI_VERSION_1_2;
1476 args.nOptions = numOptions;
1477 args.options = options;
1478 args.ignoreUnrecognized = JNI_FALSE;
1479
1480 if (JLI_IsTraceLauncher()) {
1481 int i = 0;
1482 printf("JavaVM args:\n ");
1483 printf("version 0x%08lx, ", (long)args.version);
1484 printf("ignoreUnrecognized is %s, ",
1485 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE");
1486 printf("nOptions is %ld\n", (long)args.nOptions);
1487 for (i = 0; i < numOptions; i++)
1488 printf(" option[%2d] = '%s'\n",
1489 i, args.options[i].optionString);
1490 }
1491
1492 r = ifn->CreateJavaVM(pvm, (void **)penv, &args);
1493 JLI_MemFree(options);
1494 return r == JNI_OK;
1495 }
1496
1497 static jclass helperClass = NULL;
1498
1499 jclass
1500 GetLauncherHelperClass(JNIEnv *env)
1501 {
1502 if (helperClass == NULL) {
1503 NULL_CHECK0(helperClass = FindBootStrapClass(env,
1504 "sun/launcher/LauncherHelper"));
1505 }
1506 return helperClass;
1507 }
1508
1509 static jmethodID makePlatformStringMID = NULL;
1510 /*
1511 * Returns a new Java string object for the specified platform string.
1512 */
1513 static jstring
1514 NewPlatformString(JNIEnv *env, char *s)
1515 {
1516 int len = (int)JLI_StrLen(s);
1517 jbyteArray ary;
1518 jclass cls = GetLauncherHelperClass(env);
1519 NULL_CHECK0(cls);
1520 if (s == NULL)
1521 return 0;
1522
1523 ary = (*env)->NewByteArray(env, len);
1524 if (ary != 0) {
1525 jstring str = 0;
1526 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
1527 if (!(*env)->ExceptionOccurred(env)) {
1528 if (makePlatformStringMID == NULL) {
1529 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env,
1530 cls, "makePlatformString", "(Z[B)Ljava/lang/String;"));
1531 }
1532 str = (*env)->CallStaticObjectMethod(env, cls,
1533 makePlatformStringMID, USE_STDERR, ary);
1534 (*env)->DeleteLocalRef(env, ary);
1535 return str;
1536 }
1537 }
1538 return 0;
1539 }
1540
1541 /*
1542 * Returns a new array of Java string objects for the specified
1543 * array of platform strings.
1544 */
1545 jobjectArray
1546 NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
1547 {
1548 jarray cls;
1549 jarray ary;
1550 int i;
1551
1552 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String"));
1553 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
1554 for (i = 0; i < strc; i++) {
1555 jstring str = NewPlatformString(env, *strv++);
1556 NULL_CHECK0(str);
1557 (*env)->SetObjectArrayElement(env, ary, i, str);
1558 (*env)->DeleteLocalRef(env, str);
1559 }
1560 return ary;
1561 }
1562
1563 /*
1564 * Loads a class and verifies that the main class is present and it is ok to
1565 * call it for more details refer to the java implementation.
1566 */
1567 static jclass
1568 LoadMainClass(JNIEnv *env, int mode, char *name)
1569 {
1570 jmethodID mid;
1571 jstring str;
1572 jobject result;
1573 jlong start, end;
1574 jclass cls = GetLauncherHelperClass(env);
1575 NULL_CHECK0(cls);
1576 if (JLI_IsTraceLauncher()) {
1577 start = CounterGet();
1578 }
1579 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1580 "checkAndLoadMain",
1581 "(ZILjava/lang/String;)Ljava/lang/Class;"));
1582
1583 NULL_CHECK0(str = NewPlatformString(env, name));
1584 NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid,
1585 USE_STDERR, mode, str));
1586
1587 if (JLI_IsTraceLauncher()) {
1588 end = CounterGet();
1589 printf("%ld micro seconds to load main class\n",
1590 (long)(jint)Counter2Micros(end-start));
1591 printf("----%s----\n", JLDEBUG_ENV_ENTRY);
1592 }
1593
1594 return (jclass)result;
1595 }
1596
1597 static jclass
1598 GetApplicationClass(JNIEnv *env)
1599 {
1600 jmethodID mid;
1601 jclass cls = GetLauncherHelperClass(env);
1602 NULL_CHECK0(cls);
1603 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1604 "getApplicationClass",
1605 "()Ljava/lang/Class;"));
1606
1607 return (*env)->CallStaticObjectMethod(env, cls, mid);
1608 }
1609
1610 /*
1611 * For tools, convert command line args thus:
1612 * javac -cp foo:foo/"*" -J-ms32m ...
1613 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ...
1614 *
1615 * Takes 4 parameters, and returns the populated arguments
1616 */
1617 static void
1618 TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv)
1619 {
1620 int argc = *pargc;
1621 char **argv = *pargv;
1622 int nargc = argc + jargc;
1623 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *));
1624 int i;
1625
1626 *pargc = nargc;
1627 *pargv = nargv;
1628
1629 /* Copy the VM arguments (i.e. prefixed with -J) */
1630 for (i = 0; i < jargc; i++) {
1631 const char *arg = jargv[i];
1632 if (arg[0] == '-' && arg[1] == 'J') {
1633 *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2);
1634 }
1635 }
1636
1637 for (i = 0; i < argc; i++) {
1638 char *arg = argv[i];
1639 if (arg[0] == '-' && arg[1] == 'J') {
1640 if (arg[2] == '\0') {
1641 JLI_ReportErrorMessage(ARG_ERROR3);
1642 exit(1);
1643 }
1644 *nargv++ = arg + 2;
1645 }
1646 }
1647
1648 /* Copy the rest of the arguments */
1649 for (i = 0; i < jargc ; i++) {
1650 const char *arg = jargv[i];
1651 if (arg[0] != '-' || arg[1] != 'J') {
1652 *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg);
1653 }
1654 }
1655 for (i = 0; i < argc; i++) {
1656 char *arg = argv[i];
1657 if (arg[0] == '-') {
1658 if (arg[1] == 'J')
1659 continue;
1660 if (IsWildCardEnabled() && arg[1] == 'c'
1661 && (JLI_StrCmp(arg, "-cp") == 0 ||
1662 JLI_StrCmp(arg, "-classpath") == 0)
1663 && i < argc - 1) {
1664 *nargv++ = arg;
1665 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]);
1666 i++;
1667 continue;
1668 }
1669 }
1670 *nargv++ = arg;
1671 }
1672 *nargv = 0;
1673 }
1674
1675 /*
1676 * For our tools, we try to add 3 VM options:
1677 * -Denv.class.path=<envcp>
1678 * -Dapplication.home=<apphome>
1679 * -Djava.class.path=<appcp>
1680 * <envcp> is the user's setting of CLASSPATH -- for instance the user
1681 * tells javac where to find binary classes through this environment
1682 * variable. Notice that users will be able to compile against our
1683 * tools classes (sun.tools.javac.Main) only if they explicitly add
1684 * tools.jar to CLASSPATH.
1685 * <apphome> is the directory where the application is installed.
1686 * <appcp> is the classpath to where our apps' classfiles are.
1687 */
1688 static jboolean
1689 AddApplicationOptions(int cpathc, const char **cpathv)
1690 {
1691 char *envcp, *appcp, *apphome;
1692 char home[MAXPATHLEN]; /* application home */
1693 char separator[] = { PATH_SEPARATOR, '\0' };
1694 int size, i;
1695
1696 {
1697 const char *s = getenv("CLASSPATH");
1698 if (s) {
1699 s = (char *) JLI_WildcardExpandClasspath(s);
1700 /* 40 for -Denv.class.path= */
1701 if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow
1702 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40);
1703 sprintf(envcp, "-Denv.class.path=%s", s);
1704 AddOption(envcp, NULL);
1705 }
1706 }
1707 }
1708
1709 if (!GetApplicationHome(home, sizeof(home))) {
1710 JLI_ReportErrorMessage(CFG_ERROR5);
1711 return JNI_FALSE;
1712 }
1713
1714 /* 40 for '-Dapplication.home=' */
1715 apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40);
1716 sprintf(apphome, "-Dapplication.home=%s", home);
1717 AddOption(apphome, NULL);
1718
1719 /* How big is the application's classpath? */
1720 size = 40; /* 40: "-Djava.class.path=" */
1721 for (i = 0; i < cpathc; i++) {
1722 size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */
1723 }
1724 appcp = (char *)JLI_MemAlloc(size + 1);
1725 JLI_StrCpy(appcp, "-Djava.class.path=");
1726 for (i = 0; i < cpathc; i++) {
1727 JLI_StrCat(appcp, home); /* c:\program files\myapp */
1728 JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */
1729 JLI_StrCat(appcp, separator); /* ; */
1730 }
1731 appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */
1732 AddOption(appcp, NULL);
1733 return JNI_TRUE;
1734 }
1735
1736 /*
1737 * inject the -Dsun.java.command pseudo property into the args structure
1738 * this pseudo property is used in the HotSpot VM to expose the
1739 * Java class name and arguments to the main method to the VM. The
1740 * HotSpot VM uses this pseudo property to store the Java class name
1741 * (or jar file name) and the arguments to the class's main method
1742 * to the instrumentation memory region. The sun.java.command pseudo
1743 * property is not exported by HotSpot to the Java layer.
1744 */
1745 void
1746 SetJavaCommandLineProp(char *what, int argc, char **argv)
1747 {
1748
1749 int i = 0;
1750 size_t len = 0;
1751 char* javaCommand = NULL;
1752 char* dashDstr = "-Dsun.java.command=";
1753
1754 if (what == NULL) {
1755 /* unexpected, one of these should be set. just return without
1756 * setting the property
1757 */
1758 return;
1759 }
1760
1761 /* determine the amount of memory to allocate assuming
1762 * the individual components will be space separated
1763 */
1764 len = JLI_StrLen(what);
1765 for (i = 0; i < argc; i++) {
1766 len += JLI_StrLen(argv[i]) + 1;
1767 }
1768
1769 /* allocate the memory */
1770 javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1);
1771
1772 /* build the -D string */
1773 *javaCommand = '\0';
1774 JLI_StrCat(javaCommand, dashDstr);
1775 JLI_StrCat(javaCommand, what);
1776
1777 for (i = 0; i < argc; i++) {
1778 /* the components of the string are space separated. In
1779 * the case of embedded white space, the relationship of
1780 * the white space separated components to their true
1781 * positional arguments will be ambiguous. This issue may
1782 * be addressed in a future release.
1783 */
1784 JLI_StrCat(javaCommand, " ");
1785 JLI_StrCat(javaCommand, argv[i]);
1786 }
1787
1788 AddOption(javaCommand, NULL);
1789 }
1790
1791 /*
1792 * JVM would like to know if it's created by a standard Sun launcher, or by
1793 * user native application, the following property indicates the former.
1794 */
1795 void
1796 SetJavaLauncherProp() {
1797 AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL);
1798 }
1799
1800 /*
1801 * Prints the version information from the java.version and other properties.
1802 */
1803 static void
1804 PrintJavaVersion(JNIEnv *env, jboolean extraLF)
1805 {
1806 jclass ver;
1807 jmethodID print;
1808
1809 NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps"));
1810 NULL_CHECK(print = (*env)->GetStaticMethodID(env,
1811 ver,
1812 (extraLF == JNI_TRUE) ? "println" : "print",
1813 "()V"
1814 )
1815 );
1816
1817 (*env)->CallStaticVoidMethod(env, ver, print);
1818 }
1819
1820 /*
1821 * Prints all the Java settings, see the java implementation for more details.
1822 */
1823 static void
1824 ShowSettings(JNIEnv *env, char *optString)
1825 {
1826 jmethodID showSettingsID;
1827 jstring joptString;
1828 jclass cls = GetLauncherHelperClass(env);
1829 NULL_CHECK(cls);
1830 NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls,
1831 "showSettings", "(ZLjava/lang/String;JJJZ)V"));
1832 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1833 (*env)->CallStaticVoidMethod(env, cls, showSettingsID,
1834 USE_STDERR,
1835 joptString,
1836 (jlong)initialHeapSize,
1837 (jlong)maxHeapSize,
1838 (jlong)threadStackSize,
1839 ServerClassMachine());
1840 }
1841
1842 /**
1843 * List modules supported by the runtime
1844 */
1845 static void
1846 ListModules(JNIEnv *env, char *optString)
1847 {
1848 jmethodID listModulesID;
1849 jstring joptString = NULL;
1850 jclass cls = GetLauncherHelperClass(env);
1851 NULL_CHECK(cls);
1852 NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls,
1853 "listModules", "(ZLjava/lang/String;)V"));
1854 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1855 (*env)->CallStaticVoidMethod(env, cls, listModulesID,
1856 USE_STDERR,
1857 joptString);
1858 }
1859
1860 /*
1861 * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java
1862 */
1863 static void
1864 PrintUsage(JNIEnv* env, jboolean doXUsage)
1865 {
1866 jmethodID initHelp, vmSelect, vmSynonym, vmErgo, printHelp, printXUsageMessage;
1867 jstring jprogname, vm1, vm2;
1868 int i;
1869 jclass cls = GetLauncherHelperClass(env);
1870 NULL_CHECK(cls);
1871 if (doXUsage) {
1872 NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls,
1873 "printXUsageMessage", "(Z)V"));
1874 (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, USE_STDERR);
1875 } else {
1876 NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls,
1877 "initHelpMessage", "(Ljava/lang/String;)V"));
1878
1879 NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage",
1880 "(Ljava/lang/String;Ljava/lang/String;)V"));
1881
1882 NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls,
1883 "appendVmSynonymMessage",
1884 "(Ljava/lang/String;Ljava/lang/String;)V"));
1885 NULL_CHECK(vmErgo = (*env)->GetStaticMethodID(env, cls,
1886 "appendVmErgoMessage", "(ZLjava/lang/String;)V"));
1887
1888 NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls,
1889 "printHelpMessage", "(Z)V"));
1890
1891 NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name));
1892
1893 /* Initialize the usage message with the usual preamble */
1894 (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname);
1895 CHECK_EXCEPTION_RETURN();
1896
1897
1898 /* Assemble the other variant part of the usage */
1899 if ((knownVMs[0].flag == VM_KNOWN) ||
1900 (knownVMs[0].flag == VM_IF_SERVER_CLASS)) {
1901 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[0].name));
1902 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[0].name+1));
1903 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
1904 CHECK_EXCEPTION_RETURN();
1905 }
1906 for (i=1; i<knownVMsCount; i++) {
1907 if (knownVMs[i].flag == VM_KNOWN) {
1908 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1909 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1));
1910 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
1911 CHECK_EXCEPTION_RETURN();
1912 }
1913 }
1914 for (i=1; i<knownVMsCount; i++) {
1915 if (knownVMs[i].flag == VM_ALIASED_TO) {
1916 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1917 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1));
1918 (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2);
1919 CHECK_EXCEPTION_RETURN();
1920 }
1921 }
1922
1923 /* The first known VM is the default */
1924 {
1925 jboolean isServerClassMachine = ServerClassMachine();
1926
1927 const char* defaultVM = knownVMs[0].name+1;
1928 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) && isServerClassMachine) {
1929 defaultVM = knownVMs[0].server_class+1;
1930 }
1931
1932 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, defaultVM));
1933 (*env)->CallStaticVoidMethod(env, cls, vmErgo, isServerClassMachine, vm1);
1934 CHECK_EXCEPTION_RETURN();
1935 }
1936
1937 /* Complete the usage message and print to stderr*/
1938 (*env)->CallStaticVoidMethod(env, cls, printHelp, USE_STDERR);
1939 }
1940 return;
1941 }
1942
1943 /*
1944 * Read the jvm.cfg file and fill the knownJVMs[] array.
1945 *
1946 * The functionality of the jvm.cfg file is subject to change without
1947 * notice and the mechanism will be removed in the future.
1948 *
1949 * The lexical structure of the jvm.cfg file is as follows:
1950 *
1951 * jvmcfg := { vmLine }
1952 * vmLine := knownLine
1953 * | aliasLine
1954 * | warnLine
1955 * | ignoreLine
1956 * | errorLine
1957 * | predicateLine
1958 * | commentLine
1959 * knownLine := flag "KNOWN" EOL
1960 * warnLine := flag "WARN" EOL
1961 * ignoreLine := flag "IGNORE" EOL
1962 * errorLine := flag "ERROR" EOL
1963 * aliasLine := flag "ALIASED_TO" flag EOL
1964 * predicateLine := flag "IF_SERVER_CLASS" flag EOL
1965 * commentLine := "#" text EOL
1966 * flag := "-" identifier
1967 *
1968 * The semantics are that when someone specifies a flag on the command line:
1969 * - if the flag appears on a knownLine, then the identifier is used as
1970 * the name of the directory holding the JVM library (the name of the JVM).
1971 * - if the flag appears as the first flag on an aliasLine, the identifier
1972 * of the second flag is used as the name of the JVM.
1973 * - if the flag appears on a warnLine, the identifier is used as the
1974 * name of the JVM, but a warning is generated.
1975 * - if the flag appears on an ignoreLine, the identifier is recognized as the
1976 * name of a JVM, but the identifier is ignored and the default vm used
1977 * - if the flag appears on an errorLine, an error is generated.
1978 * - if the flag appears as the first flag on a predicateLine, and
1979 * the machine on which you are running passes the predicate indicated,
1980 * then the identifier of the second flag is used as the name of the JVM,
1981 * otherwise the identifier of the first flag is used as the name of the JVM.
1982 * If no flag is given on the command line, the first vmLine of the jvm.cfg
1983 * file determines the name of the JVM.
1984 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file,
1985 * since they only make sense if someone hasn't specified the name of the
1986 * JVM on the command line.
1987 *
1988 * The intent of the jvm.cfg file is to allow several JVM libraries to
1989 * be installed in different subdirectories of a single JRE installation,
1990 * for space-savings and convenience in testing.
1991 * The intent is explicitly not to provide a full aliasing or predicate
1992 * mechanism.
1993 */
1994 jint
1995 ReadKnownVMs(const char *jvmCfgName, jboolean speculative)
1996 {
1997 FILE *jvmCfg;
1998 char line[MAXPATHLEN+20];
1999 int cnt = 0;
2000 int lineno = 0;
2001 jlong start, end;
2002 int vmType;
2003 char *tmpPtr;
2004 char *altVMName = NULL;
2005 char *serverClassVMName = NULL;
2006 static char *whiteSpace = " \t";
2007 if (JLI_IsTraceLauncher()) {
2008 start = CounterGet();
2009 }
2010
2011 jvmCfg = fopen(jvmCfgName, "r");
2012 if (jvmCfg == NULL) {
2013 if (!speculative) {
2014 JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName);
2015 exit(1);
2016 } else {
2017 return -1;
2018 }
2019 }
2020 while (fgets(line, sizeof(line), jvmCfg) != NULL) {
2021 vmType = VM_UNKNOWN;
2022 lineno++;
2023 if (line[0] == '#')
2024 continue;
2025 if (line[0] != '-') {
2026 JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName);
2027 }
2028 if (cnt >= knownVMsLimit) {
2029 GrowKnownVMs(cnt);
2030 }
2031 line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */
2032 tmpPtr = line + JLI_StrCSpn(line, whiteSpace);
2033 if (*tmpPtr == 0) {
2034 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2035 } else {
2036 /* Null-terminate this string for JLI_StringDup below */
2037 *tmpPtr++ = 0;
2038 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
2039 if (*tmpPtr == 0) {
2040 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2041 } else {
2042 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) {
2043 vmType = VM_KNOWN;
2044 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) {
2045 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2046 if (*tmpPtr != 0) {
2047 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
2048 }
2049 if (*tmpPtr == 0) {
2050 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2051 } else {
2052 /* Null terminate altVMName */
2053 altVMName = tmpPtr;
2054 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2055 *tmpPtr = 0;
2056 vmType = VM_ALIASED_TO;
2057 }
2058 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) {
2059 vmType = VM_WARN;
2060 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) {
2061 vmType = VM_IGNORE;
2062 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) {
2063 vmType = VM_ERROR;
2064 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) {
2065 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2066 if (*tmpPtr != 0) {
2067 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
2068 }
2069 if (*tmpPtr == 0) {
2070 JLI_ReportErrorMessage(CFG_WARN4, lineno, jvmCfgName);
2071 } else {
2072 /* Null terminate server class VM name */
2073 serverClassVMName = tmpPtr;
2074 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2075 *tmpPtr = 0;
2076 vmType = VM_IF_SERVER_CLASS;
2077 }
2078 } else {
2079 JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]);
2080 vmType = VM_KNOWN;
2081 }
2082 }
2083 }
2084
2085 JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line);
2086 if (vmType != VM_UNKNOWN) {
2087 knownVMs[cnt].name = JLI_StringDup(line);
2088 knownVMs[cnt].flag = vmType;
2089 switch (vmType) {
2090 default:
2091 break;
2092 case VM_ALIASED_TO:
2093 knownVMs[cnt].alias = JLI_StringDup(altVMName);
2094 JLI_TraceLauncher(" name: %s vmType: %s alias: %s\n",
2095 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
2096 break;
2097 case VM_IF_SERVER_CLASS:
2098 knownVMs[cnt].server_class = JLI_StringDup(serverClassVMName);
2099 JLI_TraceLauncher(" name: %s vmType: %s server_class: %s\n",
2100 knownVMs[cnt].name, "VM_IF_SERVER_CLASS", knownVMs[cnt].server_class);
2101 break;
2102 }
2103 cnt++;
2104 }
2105 }
2106 fclose(jvmCfg);
2107 knownVMsCount = cnt;
2108
2109 if (JLI_IsTraceLauncher()) {
2110 end = CounterGet();
2111 printf("%ld micro seconds to parse jvm.cfg\n",
2112 (long)(jint)Counter2Micros(end-start));
2113 }
2114
2115 return cnt;
2116 }
2117
2118
2119 static void
2120 GrowKnownVMs(int minimum)
2121 {
2122 struct vmdesc* newKnownVMs;
2123 int newMax;
2124
2125 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit));
2126 if (newMax <= minimum) {
2127 newMax = minimum;
2128 }
2129 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc));
2130 if (knownVMs != NULL) {
2131 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc));
2132 }
2133 JLI_MemFree(knownVMs);
2134 knownVMs = newKnownVMs;
2135 knownVMsLimit = newMax;
2136 }
2137
2138
2139 /* Returns index of VM or -1 if not found */
2140 static int
2141 KnownVMIndex(const char* name)
2142 {
2143 int i;
2144 if (JLI_StrCCmp(name, "-J") == 0) name += 2;
2145 for (i = 0; i < knownVMsCount; i++) {
2146 if (!JLI_StrCmp(name, knownVMs[i].name)) {
2147 return i;
2148 }
2149 }
2150 return -1;
2151 }
2152
2153 static void
2154 FreeKnownVMs()
2155 {
2156 int i;
2157 for (i = 0; i < knownVMsCount; i++) {
2158 JLI_MemFree(knownVMs[i].name);
2159 knownVMs[i].name = NULL;
2160 }
2161 JLI_MemFree(knownVMs);
2162 }
2163
2164 /*
2165 * Displays the splash screen according to the jar file name
2166 * and image file names stored in environment variables
2167 */
2168 void
2169 ShowSplashScreen()
2170 {
2171 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY);
2172 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY);
2173 int data_size;
2174 void *image_data = NULL;
2175 float scale_factor = 1;
2176 char *scaled_splash_name = NULL;
2177 jboolean isImageScaled = JNI_FALSE;
2178 size_t maxScaledImgNameLength = 0;
2179 if (file_name == NULL){
2180 return;
2181 }
2182 maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name);
2183
2184 scaled_splash_name = JLI_MemAlloc(
2185 maxScaledImgNameLength * sizeof(char));
2186 isImageScaled = DoSplashGetScaledImageName(jar_name, file_name,
2187 &scale_factor,
2188 scaled_splash_name, maxScaledImgNameLength);
2189 if (jar_name) {
2190
2191 if (isImageScaled) {
2192 image_data = JLI_JarUnpackFile(
2193 jar_name, scaled_splash_name, &data_size);
2194 }
2195
2196 if (!image_data) {
2197 scale_factor = 1;
2198 image_data = JLI_JarUnpackFile(
2199 jar_name, file_name, &data_size);
2200 }
2201 if (image_data) {
2202 DoSplashInit();
2203 DoSplashSetScaleFactor(scale_factor);
2204 DoSplashLoadMemory(image_data, data_size);
2205 JLI_MemFree(image_data);
2206 }
2207 } else {
2208 DoSplashInit();
2209 if (isImageScaled) {
2210 DoSplashSetScaleFactor(scale_factor);
2211 DoSplashLoadFile(scaled_splash_name);
2212 } else {
2213 DoSplashLoadFile(file_name);
2214 }
2215 }
2216 JLI_MemFree(scaled_splash_name);
2217
2218 DoSplashSetFileJarName(file_name, jar_name);
2219
2220 /*
2221 * Done with all command line processing and potential re-execs so
2222 * clean up the environment.
2223 */
2224 (void)UnsetEnv(ENV_ENTRY);
2225 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY);
2226 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY);
2227
2228 JLI_MemFree(splash_jar_entry);
2229 JLI_MemFree(splash_file_entry);
2230
2231 }
2232
2233 const char*
2234 GetFullVersion()
2235 {
2236 return _fVersion;
2237 }
2238
2239 const char*
2240 GetProgramName()
2241 {
2242 return _program_name;
2243 }
2244
2245 const char*
2246 GetLauncherName()
2247 {
2248 return _launcher_name;
2249 }
2250
2251 jint
2252 GetErgoPolicy()
2253 {
2254 return _ergo_policy;
2255 }
2256
2257 jboolean
2258 IsJavaArgs()
2259 {
2260 return _is_java_args;
2261 }
2262
2263 static jboolean
2264 IsWildCardEnabled()
2265 {
2266 return _wc_enabled;
2267 }
2268
2269 int
2270 ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize,
2271 int argc, char **argv,
2272 int mode, char *what, int ret)
2273 {
2274
2275 /*
2276 * If user doesn't specify stack size, check if VM has a preference.
2277 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will
2278 * return its default stack size through the init args structure.
2279 */
2280 if (threadStackSize == 0) {
2281 struct JDK1_1InitArgs args1_1;
2282 memset((void*)&args1_1, 0, sizeof(args1_1));
2283 args1_1.version = JNI_VERSION_1_1;
2284 ifn->GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */
2285 if (args1_1.javaStackSize > 0) {
2286 threadStackSize = args1_1.javaStackSize;
2287 }
2288 }
2289
2290 { /* Create a new thread to create JVM and invoke main method */
2291 JavaMainArgs args;
2292 int rslt;
2293
2294 args.argc = argc;
2295 args.argv = argv;
2296 args.mode = mode;
2297 args.what = what;
2298 args.ifn = *ifn;
2299
2300 rslt = ContinueInNewThread0(JavaMain, threadStackSize, (void*)&args);
2301 /* If the caller has deemed there is an error we
2302 * simply return that, otherwise we return the value of
2303 * the callee
2304 */
2305 return (ret != 0) ? ret : rslt;
2306 }
2307 }
2308
2309 static void
2310 DumpState()
2311 {
2312 if (!JLI_IsTraceLauncher()) return ;
2313 printf("Launcher state:\n");
2314 printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex());
2315 printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off");
2316 printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off");
2317 printf("\tprogram name:%s\n", GetProgramName());
2318 printf("\tlauncher name:%s\n", GetLauncherName());
2319 printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off");
2320 printf("\tfullversion:%s\n", GetFullVersion());
2321 printf("\tergo_policy:");
2322 switch(GetErgoPolicy()) {
2323 case NEVER_SERVER_CLASS:
2324 printf("NEVER_ACT_AS_A_SERVER_CLASS_MACHINE\n");
2325 break;
2326 case ALWAYS_SERVER_CLASS:
2327 printf("ALWAYS_ACT_AS_A_SERVER_CLASS_MACHINE\n");
2328 break;
2329 default:
2330 printf("DEFAULT_ERGONOMICS_POLICY\n");
2331 }
2332 }
2333
2334 /*
2335 * Return JNI_TRUE for an option string that has no effect but should
2336 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On
2337 * Solaris SPARC, this screening needs to be done if:
2338 * -d32 or -d64 is passed to a binary with an unmatched data model
2339 * (the exec in CreateExecutionEnvironment removes -d<n> options and points the
2340 * exec to the proper binary). In the case of when the data model and the
2341 * requested version is matched, an exec would not occur, and these options
2342 * were erroneously passed to the vm.
2343 */
2344 jboolean
2345 RemovableOption(char * option)
2346 {
2347 /*
2348 * Unconditionally remove both -d32 and -d64 options since only
2349 * the last such options has an effect; e.g.
2350 * java -d32 -d64 -d32 -version
2351 * is equivalent to
2352 * java -d32 -version
2353 */
2354
2355 if( (JLI_StrCCmp(option, "-d32") == 0 ) ||
2356 (JLI_StrCCmp(option, "-d64") == 0 ) )
2357 return JNI_TRUE;
2358 else
2359 return JNI_FALSE;
2360 }
2361
2362 /*
2363 * A utility procedure to always print to stderr
2364 */
2365 void
2366 JLI_ReportMessage(const char* fmt, ...)
2367 {
2368 va_list vl;
2369 va_start(vl, fmt);
2370 vfprintf(stderr, fmt, vl);
2371 fprintf(stderr, "\n");
2372 va_end(vl);
2373 }