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 /*
560 * Test if the given name is a module-system white-space option that
561 * will be passed to the VM with its corresponding long-form option
562 * name and "=" delimiter.
563 */
564 static jboolean
565 IsModuleOption(const char* name) {
566 return JLI_StrCmp(name, "--module-path") == 0 ||
567 JLI_StrCmp(name, "-p") == 0 ||
568 JLI_StrCmp(name, "--upgrade-module-path") == 0 ||
569 JLI_StrCmp(name, "--add-modules") == 0 ||
570 JLI_StrCmp(name, "--limit-modules") == 0 ||
571 JLI_StrCmp(name, "--add-exports") == 0 ||
572 JLI_StrCmp(name, "--add-reads") == 0 ||
573 JLI_StrCmp(name, "--patch-module") == 0;
574 }
575
576 /*
577 * Test if the given name has a white space option.
578 */
579 jboolean
580 IsWhiteSpaceOption(const char* name) {
581 return IsModuleOption(name) ||
582 IsLauncherOption(name);
583 }
584
585 /*
586 * Checks the command line options to find which JVM type was
587 * specified. If no command line option was given for the JVM type,
588 * the default type is used. The environment variable
589 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
590 * checked as ways of specifying which JVM type to invoke.
591 */
592 char *
593 CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
594 int i, argi;
595 int argc;
596 char **newArgv;
597 int newArgvIdx = 0;
598 int isVMType;
599 int jvmidx = -1;
600 char *jvmtype = getenv("JDK_ALTERNATE_VM");
601
602 argc = *pargc;
603
604 /* To make things simpler we always copy the argv array */
605 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *));
606
607 /* The program name is always present */
608 newArgv[newArgvIdx++] = (*argv)[0];
609
610 for (argi = 1; argi < argc; argi++) {
611 char *arg = (*argv)[argi];
612 isVMType = 0;
613
614 if (IsJavaArgs()) {
615 if (arg[0] != '-') {
616 newArgv[newArgvIdx++] = arg;
617 continue;
618 }
619 } else {
620 if (IsWhiteSpaceOption(arg)) {
621 newArgv[newArgvIdx++] = arg;
622 argi++;
623 if (argi < argc) {
624 newArgv[newArgvIdx++] = (*argv)[argi];
625 }
626 continue;
627 }
628 if (arg[0] != '-') break;
629 }
630
631 /* Did the user pass an explicit VM type? */
632 i = KnownVMIndex(arg);
633 if (i >= 0) {
634 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
635 isVMType = 1;
636 *pargc = *pargc - 1;
637 }
638
639 /* Did the user specify an "alternate" VM? */
640 else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) {
641 isVMType = 1;
642 jvmtype = arg+((arg[1]=='X')? 10 : 12);
643 jvmidx = -1;
644 }
645
646 if (!isVMType) {
647 newArgv[newArgvIdx++] = arg;
648 }
649 }
650
651 /*
652 * Finish copying the arguments if we aborted the above loop.
653 * NOTE that if we aborted via "break" then we did NOT copy the
654 * last argument above, and in addition argi will be less than
655 * argc.
656 */
657 while (argi < argc) {
658 newArgv[newArgvIdx++] = (*argv)[argi];
659 argi++;
660 }
661
662 /* argv is null-terminated */
663 newArgv[newArgvIdx] = 0;
664
665 /* Copy back argv */
666 *argv = newArgv;
667 *pargc = newArgvIdx;
668
669 /* use the default VM type if not specified (no alias processing) */
670 if (jvmtype == NULL) {
671 char* result = knownVMs[0].name+1;
672 /* Use a different VM type if we are on a server class machine? */
673 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) &&
674 (ServerClassMachine() == JNI_TRUE)) {
675 result = knownVMs[0].server_class+1;
676 }
677 JLI_TraceLauncher("Default VM: %s\n", result);
678 return result;
679 }
680
681 /* if using an alternate VM, no alias processing */
682 if (jvmidx < 0)
683 return jvmtype;
684
685 /* Resolve aliases first */
686 {
687 int loopCount = 0;
688 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
689 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
690
691 if (loopCount > knownVMsCount) {
692 if (!speculative) {
693 JLI_ReportErrorMessage(CFG_ERROR1);
694 exit(1);
695 } else {
696 return "ERROR";
697 /* break; */
698 }
699 }
700
701 if (nextIdx < 0) {
702 if (!speculative) {
703 JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias);
704 exit(1);
705 } else {
706 return "ERROR";
707 }
708 }
709 jvmidx = nextIdx;
710 jvmtype = knownVMs[jvmidx].name+1;
711 loopCount++;
712 }
713 }
714
715 switch (knownVMs[jvmidx].flag) {
716 case VM_WARN:
717 if (!speculative) {
718 JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1);
719 }
720 /* fall through */
721 case VM_IGNORE:
722 jvmtype = knownVMs[jvmidx=0].name + 1;
723 /* fall through */
724 case VM_KNOWN:
725 break;
726 case VM_ERROR:
727 if (!speculative) {
728 JLI_ReportErrorMessage(CFG_ERROR3, jvmtype);
729 exit(1);
730 } else {
731 return "ERROR";
732 }
733 }
734
735 return jvmtype;
736 }
737
738 /*
739 * static void SetJvmEnvironment(int argc, char **argv);
740 * Is called just before the JVM is loaded. We can set env variables
741 * that are consumed by the JVM. This function is non-destructive,
742 * leaving the arg list intact. The first use is for the JVM flag
743 * -XX:NativeMemoryTracking=value.
744 */
745 static void
746 SetJvmEnvironment(int argc, char **argv) {
747
748 static const char* NMT_Env_Name = "NMT_LEVEL_";
749 int i;
750 for (i = 0; i < argc; i++) {
751 char *arg = argv[i];
752 /*
753 * Since this must be a VM flag we stop processing once we see
754 * an argument the launcher would not have processed beyond (such
755 * as -version or -h), or an argument that indicates the following
756 * arguments are for the application (i.e. the main class name, or
757 * the -jar argument).
758 */
759 if (i > 0) {
760 char *prev = argv[i - 1];
761 // skip non-dash arg preceded by class path specifiers
762 if (*arg != '-' && IsWhiteSpaceOption(prev)) {
763 continue;
764 }
765
766 if (*arg != '-'
767 || JLI_StrCmp(arg, "-version") == 0
768 || JLI_StrCmp(arg, "-fullversion") == 0
769 || JLI_StrCmp(arg, "-help") == 0
770 || JLI_StrCmp(arg, "--help") == 0
771 || JLI_StrCmp(arg, "-?") == 0
772 || JLI_StrCmp(arg, "-jar") == 0
773 || JLI_StrCmp(arg, "-X") == 0) {
774 return;
775 }
776 }
777 /*
778 * The following case checks for "-XX:NativeMemoryTracking=value".
779 * If value is non null, an environmental variable set to this value
780 * will be created to be used by the JVM.
781 * The argument is passed to the JVM, which will check validity.
782 * The JVM is responsible for removing the env variable.
783 */
784 if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) {
785 int retval;
786 // get what follows this parameter, include "="
787 size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking=");
788 if (JLI_StrLen(arg) > pnlen) {
789 char* value = arg + pnlen;
790 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits
791
792 /*
793 * ensures that malloc successful
794 * DONT JLI_MemFree() pbuf. JLI_PutEnv() uses system call
795 * that could store the address.
796 */
797 char * pbuf = (char*)JLI_MemAlloc(pbuflen);
798
799 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value);
800 retval = JLI_PutEnv(pbuf);
801 if (JLI_IsTraceLauncher()) {
802 char* envName;
803 char* envBuf;
804
805 // ensures that malloc successful
806 envName = (char*)JLI_MemAlloc(pbuflen);
807 JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid());
808
809 printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName);
810 printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf);
811 envBuf = getenv(envName);
812 printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf);
813 free(envName);
814 }
815
816 }
817
818 }
819
820 }
821 }
822
823 /* copied from HotSpot function "atomll()" */
824 static int
825 parse_size(const char *s, jlong *result) {
826 jlong n = 0;
827 int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n);
828 if (args_read != 1) {
829 return 0;
830 }
831 while (*s != '\0' && *s >= '0' && *s <= '9') {
832 s++;
833 }
834 // 4705540: illegal if more characters are found after the first non-digit
835 if (JLI_StrLen(s) > 1) {
836 return 0;
837 }
838 switch (*s) {
839 case 'T': case 't':
840 *result = n * GB * KB;
841 return 1;
842 case 'G': case 'g':
843 *result = n * GB;
844 return 1;
845 case 'M': case 'm':
846 *result = n * MB;
847 return 1;
848 case 'K': case 'k':
849 *result = n * KB;
850 return 1;
851 case '\0':
852 *result = n;
853 return 1;
854 default:
855 /* Create JVM with default stack and let VM handle malformed -Xss string*/
856 return 0;
857 }
858 }
859
860 /*
861 * Adds a new VM option with the given name and value.
862 */
863 void
864 AddOption(char *str, void *info)
865 {
866 /*
867 * Expand options array if needed to accommodate at least one more
868 * VM option.
869 */
870 if (numOptions >= maxOptions) {
871 if (options == 0) {
872 maxOptions = 4;
873 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
874 } else {
875 JavaVMOption *tmp;
876 maxOptions *= 2;
877 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
878 memcpy(tmp, options, numOptions * sizeof(JavaVMOption));
879 JLI_MemFree(options);
880 options = tmp;
881 }
882 }
883 options[numOptions].optionString = str;
884 options[numOptions++].extraInfo = info;
885
886 if (JLI_StrCCmp(str, "-Xss") == 0) {
887 jlong tmp;
888 if (parse_size(str + 4, &tmp)) {
889 threadStackSize = tmp;
890 /*
891 * Make sure the thread stack size is big enough that we won't get a stack
892 * overflow before the JVM startup code can check to make sure the stack
893 * is big enough.
894 */
895 if (threadStackSize < (jlong)STACK_SIZE_MINIMUM) {
896 threadStackSize = STACK_SIZE_MINIMUM;
897 }
898 }
899 }
900
901 if (JLI_StrCCmp(str, "-Xmx") == 0) {
902 jlong tmp;
903 if (parse_size(str + 4, &tmp)) {
904 maxHeapSize = tmp;
905 }
906 }
907
908 if (JLI_StrCCmp(str, "-Xms") == 0) {
909 jlong tmp;
910 if (parse_size(str + 4, &tmp)) {
911 initialHeapSize = tmp;
912 }
913 }
914 }
915
916 static void
917 SetClassPath(const char *s)
918 {
919 char *def;
920 const char *orig = s;
921 static const char format[] = "-Djava.class.path=%s";
922 /*
923 * usually we should not get a null pointer, but there are cases where
924 * we might just get one, in which case we simply ignore it, and let the
925 * caller deal with it
926 */
927 if (s == NULL)
928 return;
929 s = JLI_WildcardExpandClasspath(s);
930 if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s))
931 // s is became corrupted after expanding wildcards
932 return;
933 def = JLI_MemAlloc(sizeof(format)
934 - 2 /* strlen("%s") */
935 + JLI_StrLen(s));
936 sprintf(def, format, s);
937 AddOption(def, NULL);
938 if (s != orig)
939 JLI_MemFree((char *) s);
940 _have_classpath = JNI_TRUE;
941 }
942
943 static void
944 AddLongFormOption(const char *option, const char *arg)
945 {
946 static const char format[] = "%s=%s";
947 char *def;
948 size_t def_len;
949
950 def_len = JLI_StrLen(option) + 1 + JLI_StrLen(arg) + 1;
951 def = JLI_MemAlloc(def_len);
952 JLI_Snprintf(def, def_len, format, option, arg);
953 AddOption(def, NULL);
954 }
955
956 static void
957 SetMainModule(const char *s)
958 {
959 static const char format[] = "-Djdk.module.main=%s";
960 char* slash = JLI_StrChr(s, '/');
961 size_t s_len, def_len;
962 char *def;
963
964 /* value may be <module> or <module>/<mainclass> */
965 if (slash == NULL) {
966 s_len = JLI_StrLen(s);
967 } else {
968 s_len = (size_t) (slash - s);
969 }
970 def_len = sizeof(format)
971 - 2 /* strlen("%s") */
972 + s_len;
973 def = JLI_MemAlloc(def_len);
974 JLI_Snprintf(def, def_len, format, s);
975 AddOption(def, NULL);
976 }
977
978 /*
979 * The SelectVersion() routine ensures that an appropriate version of
980 * the JRE is running. The specification for the appropriate version
981 * is obtained from either the manifest of a jar file (preferred) or
982 * from command line options.
983 * The routine also parses splash screen command line options and
984 * passes on their values in private environment variables.
985 */
986 static void
987 SelectVersion(int argc, char **argv, char **main_class)
988 {
989 char *arg;
990 char *operand;
991 char *version = NULL;
992 char *jre = NULL;
993 int jarflag = 0;
994 int headlessflag = 0;
995 int restrict_search = -1; /* -1 implies not known */
996 manifest_info info;
997 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
998 char *splash_file_name = NULL;
999 char *splash_jar_name = NULL;
1000 char *env_in;
1001 int res;
1002 jboolean has_arg;
1003
1004 /*
1005 * If the version has already been selected, set *main_class
1006 * with the value passed through the environment (if any) and
1007 * simply return.
1008 */
1009
1010 /*
1011 * This environmental variable can be set by mJRE capable JREs
1012 * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been
1013 * stripped by those JREs. This environmental variable allows 1.9+
1014 * JREs to be started by these mJRE capable JREs.
1015 * Note that mJRE directives in the jar manifest file would have been
1016 * ignored for a JRE started by another JRE...
1017 * .. skipped for JRE 1.5 and beyond.
1018 * .. not even checked for pre 1.5.
1019 */
1020 if ((env_in = getenv(ENV_ENTRY)) != NULL) {
1021 if (*env_in != '\0')
1022 *main_class = JLI_StringDup(env_in);
1023 return;
1024 }
1025
1026 /*
1027 * Scan through the arguments for options relevant to multiple JRE
1028 * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8.
1029 *
1030 * This capability is no longer available with JRE versions 1.9 and later.
1031 * These command line options are reported as errors.
1032 */
1033
1034 argc--;
1035 argv++;
1036 while ((arg = *argv) != 0 && *arg == '-') {
1037 has_arg = IsOptionWithArgument(argc, argv);
1038 if (JLI_StrCCmp(arg, "-version:") == 0) {
1039 JLI_ReportErrorMessage(SPC_ERROR1);
1040 } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) {
1041 JLI_ReportErrorMessage(SPC_ERROR2);
1042 } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) {
1043 JLI_ReportErrorMessage(SPC_ERROR2);
1044 } else {
1045 if (JLI_StrCmp(arg, "-jar") == 0)
1046 jarflag = 1;
1047 if (IsWhiteSpaceOption(arg)) {
1048 if (has_arg) {
1049 argc--;
1050 argv++;
1051 arg = *argv;
1052 }
1053 }
1054
1055 /*
1056 * Checking for headless toolkit option in the some way as AWT does:
1057 * "true" means true and any other value means false
1058 */
1059 if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) {
1060 headlessflag = 1;
1061 } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) {
1062 headlessflag = 0;
1063 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1064 splash_file_name = arg+8;
1065 }
1066 }
1067 argc--;
1068 argv++;
1069 }
1070 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
1071 operand = NULL;
1072 } else {
1073 argc--;
1074 operand = *argv++;
1075 }
1076
1077 /*
1078 * If there is a jar file, read the manifest. If the jarfile can't be
1079 * read, the manifest can't be read from the jar file, or the manifest
1080 * is corrupt, issue the appropriate error messages and exit.
1081 *
1082 * Even if there isn't a jar file, construct a manifest_info structure
1083 * containing the command line information. It's a convenient way to carry
1084 * this data around.
1085 */
1086 if (jarflag && operand) {
1087 if ((res = JLI_ParseManifest(operand, &info)) != 0) {
1088 if (res == -1)
1089 JLI_ReportErrorMessage(JAR_ERROR2, operand);
1090 else
1091 JLI_ReportErrorMessage(JAR_ERROR3, operand);
1092 exit(1);
1093 }
1094
1095 /*
1096 * Command line splash screen option should have precedence
1097 * over the manifest, so the manifest data is used only if
1098 * splash_file_name has not been initialized above during command
1099 * line parsing
1100 */
1101 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) {
1102 splash_file_name = info.splashscreen_image_file_name;
1103 splash_jar_name = operand;
1104 }
1105 } else {
1106 info.manifest_version = NULL;
1107 info.main_class = NULL;
1108 info.jre_version = NULL;
1109 info.jre_restrict_search = 0;
1110 }
1111
1112 /*
1113 * Passing on splash screen info in environment variables
1114 */
1115 if (splash_file_name && !headlessflag) {
1116 char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1);
1117 JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "=");
1118 JLI_StrCat(splash_file_entry, splash_file_name);
1119 putenv(splash_file_entry);
1120 }
1121 if (splash_jar_name && !headlessflag) {
1122 char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1);
1123 JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
1124 JLI_StrCat(splash_jar_entry, splash_jar_name);
1125 putenv(splash_jar_entry);
1126 }
1127
1128
1129 /*
1130 * "Valid" returns (other than unrecoverable errors) follow. Set
1131 * main_class as a side-effect of this routine.
1132 */
1133 if (info.main_class != NULL)
1134 *main_class = JLI_StringDup(info.main_class);
1135
1136 if (info.jre_version == NULL) {
1137 JLI_FreeManifest();
1138 return;
1139 }
1140
1141 }
1142
1143 /*
1144 * Test if the current argv is an option, i.e. with a leading `-`
1145 * and followed with an argument without a leading `-`.
1146 */
1147 static jboolean
1148 IsOptionWithArgument(int argc, char** argv) {
1149 char* option;
1150 char* arg;
1151
1152 if (argc <= 1)
1153 return JNI_FALSE;
1154
1155 option = *argv;
1156 arg = *(argv+1);
1157 return *option == '-' && *arg != '-';
1158 }
1159
1160 /*
1161 * Gets the option, and its argument if the option has an argument.
1162 * It will update *pargc, **pargv to the next option.
1163 */
1164 static int
1165 GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) {
1166 int argc = *pargc;
1167 char** argv = *pargv;
1168 char* arg = *argv;
1169
1170 char* option = arg;
1171 char* value = NULL;
1172 char* equals = NULL;
1173 int kind = LAUNCHER_OPTION;
1174 jboolean has_arg = JNI_FALSE;
1175
1176 // check if this option may be a white-space option with an argument
1177 has_arg = IsOptionWithArgument(argc, argv);
1178
1179 argv++; --argc;
1180 if (IsLauncherOption(arg)) {
1181 if (has_arg) {
1182 value = *argv;
1183 argv++; --argc;
1184 }
1185 kind = IsLauncherMainOption(arg) ? LAUNCHER_MAIN_OPTION
1186 : LAUNCHER_OPTION_WITH_ARGUMENT;
1187 } else if (IsModuleOption(arg)) {
1188 kind = VM_LONG_OPTION_WITH_ARGUMENT;
1189 if (has_arg) {
1190 value = *argv;
1191 argv++; --argc;
1192 }
1193
1194 /*
1195 * Support short form alias
1196 */
1197 if (JLI_StrCmp(arg, "-p") == 0) {
1198 option = "--module-path";
1199 }
1200
1201 } else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) {
1202 value = equals+1;
1203 if (JLI_StrCCmp(arg, "--list-modules=") == 0 ||
1204 JLI_StrCCmp(arg, "--module=") == 0 ||
1205 JLI_StrCCmp(arg, "--class-path=") == 0) {
1206 kind = LAUNCHER_OPTION_WITH_ARGUMENT;
1207 } else {
1208 kind = VM_LONG_OPTION;
1209 }
1210 }
1211
1212 *pargc = argc;
1213 *pargv = argv;
1214 *poption = option;
1215 *pvalue = value;
1216 return kind;
1217 }
1218
1219 /*
1220 * Parses command line arguments. Returns JNI_FALSE if launcher
1221 * should exit without starting vm, returns JNI_TRUE if vm needs
1222 * to be started to process given options. *pret (the launcher
1223 * process return value) is set to 0 for a normal exit.
1224 */
1225 static jboolean
1226 ParseArguments(int *pargc, char ***pargv,
1227 int *pmode, char **pwhat,
1228 int *pret, const char *jrepath)
1229 {
1230 int argc = *pargc;
1231 char **argv = *pargv;
1232 int mode = LM_UNKNOWN;
1233 char *arg;
1234
1235 *pret = 0;
1236
1237 while ((arg = *argv) != 0 && *arg == '-') {
1238 char *option = NULL;
1239 char *value = NULL;
1240 int kind = GetOpt(&argc, &argv, &option, &value);
1241 jboolean has_arg = value != NULL;
1242
1243 /*
1244 * Option to set main entry point
1245 */
1246 if (JLI_StrCmp(arg, "-jar") == 0) {
1247 ARG_CHECK(argc, ARG_ERROR2, arg);
1248 mode = LM_JAR;
1249 } else if (JLI_StrCmp(arg, "--module") == 0 ||
1250 JLI_StrCCmp(arg, "--module=") == 0 ||
1251 JLI_StrCmp(arg, "-m") == 0) {
1252 REPORT_ERROR (has_arg, ARG_ERROR5, arg);
1253 SetMainModule(value);
1254 mode = LM_MODULE;
1255 if (has_arg) {
1256 *pwhat = value;
1257 break;
1258 }
1259 } else if (JLI_StrCmp(arg, "--class-path") == 0 ||
1260 JLI_StrCCmp(arg, "--class-path=") == 0 ||
1261 JLI_StrCmp(arg, "-classpath") == 0 ||
1262 JLI_StrCmp(arg, "-cp") == 0) {
1263 REPORT_ERROR (has_arg, ARG_ERROR1, arg);
1264 SetClassPath(value);
1265 mode = LM_CLASS;
1266 } else if (JLI_StrCmp(arg, "--list-modules") == 0 ||
1267 JLI_StrCCmp(arg, "--list-modules=") == 0) {
1268 listModules = arg;
1269
1270 // set listModules to --list-modules=<module-names> if argument is specified
1271 if (JLI_StrCmp(arg, "--list-modules") == 0 && has_arg) {
1272 static const char format[] = "%s=%s";
1273 size_t buflen = JLI_StrLen(option) + 2 + JLI_StrLen(value);
1274 listModules = JLI_MemAlloc(buflen);
1275 JLI_Snprintf(listModules, buflen, format, option, value);
1276 }
1277 return JNI_TRUE;
1278 /*
1279 * Parse white-space options
1280 */
1281 } else if (has_arg) {
1282 if (kind == VM_LONG_OPTION) {
1283 AddOption(option, NULL);
1284 } else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) {
1285 AddLongFormOption(option, value);
1286 }
1287 /*
1288 * Error missing argument
1289 */
1290 } else if (!has_arg && IsWhiteSpaceOption(arg)) {
1291 if (JLI_StrCmp(arg, "--module-path") == 0 ||
1292 JLI_StrCmp(arg, "-p") == 0 ||
1293 JLI_StrCmp(arg, "--upgrade-module-path") == 0) {
1294 REPORT_ERROR (has_arg, ARG_ERROR4, arg);
1295 } else if (JLI_StrCmp(arg, "--add-modules") == 0 ||
1296 JLI_StrCmp(arg, "--limit-modules") == 0 ||
1297 JLI_StrCmp(arg, "--add-exports") == 0 ||
1298 JLI_StrCmp(arg, "--add-reads") == 0 ||
1299 JLI_StrCmp(arg, "--patch-module") == 0) {
1300 REPORT_ERROR (has_arg, ARG_ERROR6, arg);
1301 }
1302 /*
1303 * The following cases will cause the argument parsing to stop
1304 */
1305 } else if (JLI_StrCmp(arg, "--help") == 0 ||
1306 JLI_StrCmp(arg, "-help") == 0 ||
1307 JLI_StrCmp(arg, "-h") == 0 ||
1308 JLI_StrCmp(arg, "-?") == 0) {
1309 printUsage = JNI_TRUE;
1310 return JNI_TRUE;
1311 } else if (JLI_StrCmp(arg, "-version") == 0) {
1312 printVersion = JNI_TRUE;
1313 return JNI_TRUE;
1314 } else if (JLI_StrCmp(arg, "-showversion") == 0) {
1315 showVersion = JNI_TRUE;
1316 } else if (JLI_StrCmp(arg, "--dry-run") == 0) {
1317 dryRun = JNI_TRUE;
1318 } else if (JLI_StrCmp(arg, "-X") == 0) {
1319 printXUsage = JNI_TRUE;
1320 return JNI_TRUE;
1321 /*
1322 * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT.
1323 * In the latter case, any SUBOPT value not recognized will default to "all"
1324 */
1325 } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 ||
1326 JLI_StrCCmp(arg, "-XshowSettings:") == 0) {
1327 showSettings = arg;
1328 } else if (JLI_StrCmp(arg, "-Xdiag") == 0) {
1329 AddOption("-Dsun.java.launcher.diag=true", NULL);
1330 AddOption("-Djdk.launcher.traceResolver=true", NULL);
1331 } else if (JLI_StrCmp(arg, "-Xdiag:resolver") == 0) {
1332 AddOption("-Djdk.launcher.traceResolver=true", NULL);
1333 /*
1334 * The following case provide backward compatibility with old-style
1335 * command line options.
1336 */
1337 } else if (JLI_StrCmp(arg, "-fullversion") == 0) {
1338 JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion());
1339 return JNI_FALSE;
1340 } else if (JLI_StrCmp(arg, "-verbosegc") == 0) {
1341 AddOption("-verbose:gc", NULL);
1342 } else if (JLI_StrCmp(arg, "-t") == 0) {
1343 AddOption("-Xt", NULL);
1344 } else if (JLI_StrCmp(arg, "-tm") == 0) {
1345 AddOption("-Xtm", NULL);
1346 } else if (JLI_StrCmp(arg, "-debug") == 0) {
1347 AddOption("-Xdebug", NULL);
1348 } else if (JLI_StrCmp(arg, "-noclassgc") == 0) {
1349 AddOption("-Xnoclassgc", NULL);
1350 } else if (JLI_StrCmp(arg, "-Xfuture") == 0) {
1351 AddOption("-Xverify:all", NULL);
1352 } else if (JLI_StrCmp(arg, "-verify") == 0) {
1353 AddOption("-Xverify:all", NULL);
1354 } else if (JLI_StrCmp(arg, "-verifyremote") == 0) {
1355 AddOption("-Xverify:remote", NULL);
1356 } else if (JLI_StrCmp(arg, "-noverify") == 0) {
1357 AddOption("-Xverify:none", NULL);
1358 } else if (JLI_StrCCmp(arg, "-ss") == 0 ||
1359 JLI_StrCCmp(arg, "-oss") == 0 ||
1360 JLI_StrCCmp(arg, "-ms") == 0 ||
1361 JLI_StrCCmp(arg, "-mx") == 0) {
1362 char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6);
1363 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
1364 AddOption(tmp, NULL);
1365 } else if (JLI_StrCmp(arg, "-checksource") == 0 ||
1366 JLI_StrCmp(arg, "-cs") == 0 ||
1367 JLI_StrCmp(arg, "-noasyncgc") == 0) {
1368 /* No longer supported */
1369 JLI_ReportErrorMessage(ARG_WARN, arg);
1370 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1371 ; /* Ignore machine independent options already handled */
1372 } else if (ProcessPlatformOption(arg)) {
1373 ; /* Processing of platform dependent options */
1374 } else if (RemovableOption(arg)) {
1375 ; /* Do not pass option to vm. */
1376 } else {
1377 /* java.class.path set on the command line */
1378 if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) {
1379 _have_classpath = JNI_TRUE;
1380 }
1381 AddOption(arg, NULL);
1382 }
1383 }
1384
1385 if (*pwhat == NULL && --argc >= 0) {
1386 *pwhat = *argv++;
1387 }
1388
1389 if (*pwhat == NULL) {
1390 *pret = 1;
1391 } else if (mode == LM_UNKNOWN) {
1392 /* default to LM_CLASS if -m, -jar and -cp options are
1393 * not specified */
1394 if (!_have_classpath) {
1395 SetClassPath(".");
1396 }
1397 mode = LM_CLASS;
1398 }
1399
1400 if (argc >= 0) {
1401 *pargc = argc;
1402 *pargv = argv;
1403 }
1404
1405 *pmode = mode;
1406
1407 return JNI_TRUE;
1408 }
1409
1410 /*
1411 * Initializes the Java Virtual Machine. Also frees options array when
1412 * finished.
1413 */
1414 static jboolean
1415 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn)
1416 {
1417 JavaVMInitArgs args;
1418 jint r;
1419
1420 memset(&args, 0, sizeof(args));
1421 args.version = JNI_VERSION_1_2;
1422 args.nOptions = numOptions;
1423 args.options = options;
1424 args.ignoreUnrecognized = JNI_FALSE;
1425
1426 if (JLI_IsTraceLauncher()) {
1427 int i = 0;
1428 printf("JavaVM args:\n ");
1429 printf("version 0x%08lx, ", (long)args.version);
1430 printf("ignoreUnrecognized is %s, ",
1431 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE");
1432 printf("nOptions is %ld\n", (long)args.nOptions);
1433 for (i = 0; i < numOptions; i++)
1434 printf(" option[%2d] = '%s'\n",
1435 i, args.options[i].optionString);
1436 }
1437
1438 r = ifn->CreateJavaVM(pvm, (void **)penv, &args);
1439 JLI_MemFree(options);
1440 return r == JNI_OK;
1441 }
1442
1443 static jclass helperClass = NULL;
1444
1445 jclass
1446 GetLauncherHelperClass(JNIEnv *env)
1447 {
1448 if (helperClass == NULL) {
1449 NULL_CHECK0(helperClass = FindBootStrapClass(env,
1450 "sun/launcher/LauncherHelper"));
1451 }
1452 return helperClass;
1453 }
1454
1455 static jmethodID makePlatformStringMID = NULL;
1456 /*
1457 * Returns a new Java string object for the specified platform string.
1458 */
1459 static jstring
1460 NewPlatformString(JNIEnv *env, char *s)
1461 {
1462 int len = (int)JLI_StrLen(s);
1463 jbyteArray ary;
1464 jclass cls = GetLauncherHelperClass(env);
1465 NULL_CHECK0(cls);
1466 if (s == NULL)
1467 return 0;
1468
1469 ary = (*env)->NewByteArray(env, len);
1470 if (ary != 0) {
1471 jstring str = 0;
1472 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
1473 if (!(*env)->ExceptionOccurred(env)) {
1474 if (makePlatformStringMID == NULL) {
1475 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env,
1476 cls, "makePlatformString", "(Z[B)Ljava/lang/String;"));
1477 }
1478 str = (*env)->CallStaticObjectMethod(env, cls,
1479 makePlatformStringMID, USE_STDERR, ary);
1480 (*env)->DeleteLocalRef(env, ary);
1481 return str;
1482 }
1483 }
1484 return 0;
1485 }
1486
1487 /*
1488 * Returns a new array of Java string objects for the specified
1489 * array of platform strings.
1490 */
1491 jobjectArray
1492 NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
1493 {
1494 jarray cls;
1495 jarray ary;
1496 int i;
1497
1498 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String"));
1499 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
1500 for (i = 0; i < strc; i++) {
1501 jstring str = NewPlatformString(env, *strv++);
1502 NULL_CHECK0(str);
1503 (*env)->SetObjectArrayElement(env, ary, i, str);
1504 (*env)->DeleteLocalRef(env, str);
1505 }
1506 return ary;
1507 }
1508
1509 /*
1510 * Loads a class and verifies that the main class is present and it is ok to
1511 * call it for more details refer to the java implementation.
1512 */
1513 static jclass
1514 LoadMainClass(JNIEnv *env, int mode, char *name)
1515 {
1516 jmethodID mid;
1517 jstring str;
1518 jobject result;
1519 jlong start, end;
1520 jclass cls = GetLauncherHelperClass(env);
1521 NULL_CHECK0(cls);
1522 if (JLI_IsTraceLauncher()) {
1523 start = CounterGet();
1524 }
1525 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1526 "checkAndLoadMain",
1527 "(ZILjava/lang/String;)Ljava/lang/Class;"));
1528
1529 NULL_CHECK0(str = NewPlatformString(env, name));
1530 NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid,
1531 USE_STDERR, mode, str));
1532
1533 if (JLI_IsTraceLauncher()) {
1534 end = CounterGet();
1535 printf("%ld micro seconds to load main class\n",
1536 (long)(jint)Counter2Micros(end-start));
1537 printf("----%s----\n", JLDEBUG_ENV_ENTRY);
1538 }
1539
1540 return (jclass)result;
1541 }
1542
1543 static jclass
1544 GetApplicationClass(JNIEnv *env)
1545 {
1546 jmethodID mid;
1547 jclass cls = GetLauncherHelperClass(env);
1548 NULL_CHECK0(cls);
1549 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1550 "getApplicationClass",
1551 "()Ljava/lang/Class;"));
1552
1553 return (*env)->CallStaticObjectMethod(env, cls, mid);
1554 }
1555
1556 /*
1557 * For tools, convert command line args thus:
1558 * javac -cp foo:foo/"*" -J-ms32m ...
1559 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ...
1560 *
1561 * Takes 4 parameters, and returns the populated arguments
1562 */
1563 static void
1564 TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv)
1565 {
1566 int argc = *pargc;
1567 char **argv = *pargv;
1568 int nargc = argc + jargc;
1569 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *));
1570 int i;
1571
1572 *pargc = nargc;
1573 *pargv = nargv;
1574
1575 /* Copy the VM arguments (i.e. prefixed with -J) */
1576 for (i = 0; i < jargc; i++) {
1577 const char *arg = jargv[i];
1578 if (arg[0] == '-' && arg[1] == 'J') {
1579 *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2);
1580 }
1581 }
1582
1583 for (i = 0; i < argc; i++) {
1584 char *arg = argv[i];
1585 if (arg[0] == '-' && arg[1] == 'J') {
1586 if (arg[2] == '\0') {
1587 JLI_ReportErrorMessage(ARG_ERROR3);
1588 exit(1);
1589 }
1590 *nargv++ = arg + 2;
1591 }
1592 }
1593
1594 /* Copy the rest of the arguments */
1595 for (i = 0; i < jargc ; i++) {
1596 const char *arg = jargv[i];
1597 if (arg[0] != '-' || arg[1] != 'J') {
1598 *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg);
1599 }
1600 }
1601 for (i = 0; i < argc; i++) {
1602 char *arg = argv[i];
1603 if (arg[0] == '-') {
1604 if (arg[1] == 'J')
1605 continue;
1606 if (IsWildCardEnabled() && arg[1] == 'c'
1607 && (JLI_StrCmp(arg, "-cp") == 0 ||
1608 JLI_StrCmp(arg, "-classpath") == 0)
1609 && i < argc - 1) {
1610 *nargv++ = arg;
1611 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]);
1612 i++;
1613 continue;
1614 }
1615 }
1616 *nargv++ = arg;
1617 }
1618 *nargv = 0;
1619 }
1620
1621 /*
1622 * For our tools, we try to add 3 VM options:
1623 * -Denv.class.path=<envcp>
1624 * -Dapplication.home=<apphome>
1625 * -Djava.class.path=<appcp>
1626 * <envcp> is the user's setting of CLASSPATH -- for instance the user
1627 * tells javac where to find binary classes through this environment
1628 * variable. Notice that users will be able to compile against our
1629 * tools classes (sun.tools.javac.Main) only if they explicitly add
1630 * tools.jar to CLASSPATH.
1631 * <apphome> is the directory where the application is installed.
1632 * <appcp> is the classpath to where our apps' classfiles are.
1633 */
1634 static jboolean
1635 AddApplicationOptions(int cpathc, const char **cpathv)
1636 {
1637 char *envcp, *appcp, *apphome;
1638 char home[MAXPATHLEN]; /* application home */
1639 char separator[] = { PATH_SEPARATOR, '\0' };
1640 int size, i;
1641
1642 {
1643 const char *s = getenv("CLASSPATH");
1644 if (s) {
1645 s = (char *) JLI_WildcardExpandClasspath(s);
1646 /* 40 for -Denv.class.path= */
1647 if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow
1648 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40);
1649 sprintf(envcp, "-Denv.class.path=%s", s);
1650 AddOption(envcp, NULL);
1651 }
1652 }
1653 }
1654
1655 if (!GetApplicationHome(home, sizeof(home))) {
1656 JLI_ReportErrorMessage(CFG_ERROR5);
1657 return JNI_FALSE;
1658 }
1659
1660 /* 40 for '-Dapplication.home=' */
1661 apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40);
1662 sprintf(apphome, "-Dapplication.home=%s", home);
1663 AddOption(apphome, NULL);
1664
1665 /* How big is the application's classpath? */
1666 size = 40; /* 40: "-Djava.class.path=" */
1667 for (i = 0; i < cpathc; i++) {
1668 size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */
1669 }
1670 appcp = (char *)JLI_MemAlloc(size + 1);
1671 JLI_StrCpy(appcp, "-Djava.class.path=");
1672 for (i = 0; i < cpathc; i++) {
1673 JLI_StrCat(appcp, home); /* c:\program files\myapp */
1674 JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */
1675 JLI_StrCat(appcp, separator); /* ; */
1676 }
1677 appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */
1678 AddOption(appcp, NULL);
1679 return JNI_TRUE;
1680 }
1681
1682 /*
1683 * inject the -Dsun.java.command pseudo property into the args structure
1684 * this pseudo property is used in the HotSpot VM to expose the
1685 * Java class name and arguments to the main method to the VM. The
1686 * HotSpot VM uses this pseudo property to store the Java class name
1687 * (or jar file name) and the arguments to the class's main method
1688 * to the instrumentation memory region. The sun.java.command pseudo
1689 * property is not exported by HotSpot to the Java layer.
1690 */
1691 void
1692 SetJavaCommandLineProp(char *what, int argc, char **argv)
1693 {
1694
1695 int i = 0;
1696 size_t len = 0;
1697 char* javaCommand = NULL;
1698 char* dashDstr = "-Dsun.java.command=";
1699
1700 if (what == NULL) {
1701 /* unexpected, one of these should be set. just return without
1702 * setting the property
1703 */
1704 return;
1705 }
1706
1707 /* determine the amount of memory to allocate assuming
1708 * the individual components will be space separated
1709 */
1710 len = JLI_StrLen(what);
1711 for (i = 0; i < argc; i++) {
1712 len += JLI_StrLen(argv[i]) + 1;
1713 }
1714
1715 /* allocate the memory */
1716 javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1);
1717
1718 /* build the -D string */
1719 *javaCommand = '\0';
1720 JLI_StrCat(javaCommand, dashDstr);
1721 JLI_StrCat(javaCommand, what);
1722
1723 for (i = 0; i < argc; i++) {
1724 /* the components of the string are space separated. In
1725 * the case of embedded white space, the relationship of
1726 * the white space separated components to their true
1727 * positional arguments will be ambiguous. This issue may
1728 * be addressed in a future release.
1729 */
1730 JLI_StrCat(javaCommand, " ");
1731 JLI_StrCat(javaCommand, argv[i]);
1732 }
1733
1734 AddOption(javaCommand, NULL);
1735 }
1736
1737 /*
1738 * JVM would like to know if it's created by a standard Sun launcher, or by
1739 * user native application, the following property indicates the former.
1740 */
1741 void
1742 SetJavaLauncherProp() {
1743 AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL);
1744 }
1745
1746 /*
1747 * Prints the version information from the java.version and other properties.
1748 */
1749 static void
1750 PrintJavaVersion(JNIEnv *env, jboolean extraLF)
1751 {
1752 jclass ver;
1753 jmethodID print;
1754
1755 NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps"));
1756 NULL_CHECK(print = (*env)->GetStaticMethodID(env,
1757 ver,
1758 (extraLF == JNI_TRUE) ? "println" : "print",
1759 "()V"
1760 )
1761 );
1762
1763 (*env)->CallStaticVoidMethod(env, ver, print);
1764 }
1765
1766 /*
1767 * Prints all the Java settings, see the java implementation for more details.
1768 */
1769 static void
1770 ShowSettings(JNIEnv *env, char *optString)
1771 {
1772 jmethodID showSettingsID;
1773 jstring joptString;
1774 jclass cls = GetLauncherHelperClass(env);
1775 NULL_CHECK(cls);
1776 NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls,
1777 "showSettings", "(ZLjava/lang/String;JJJZ)V"));
1778 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1779 (*env)->CallStaticVoidMethod(env, cls, showSettingsID,
1780 USE_STDERR,
1781 joptString,
1782 (jlong)initialHeapSize,
1783 (jlong)maxHeapSize,
1784 (jlong)threadStackSize,
1785 ServerClassMachine());
1786 }
1787
1788 /**
1789 * List modules supported by the runtime
1790 */
1791 static void
1792 ListModules(JNIEnv *env, char *optString)
1793 {
1794 jmethodID listModulesID;
1795 jstring joptString = NULL;
1796 jclass cls = GetLauncherHelperClass(env);
1797 NULL_CHECK(cls);
1798 NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls,
1799 "listModules", "(ZLjava/lang/String;)V"));
1800 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1801 (*env)->CallStaticVoidMethod(env, cls, listModulesID,
1802 USE_STDERR,
1803 joptString);
1804 }
1805
1806 /*
1807 * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java
1808 */
1809 static void
1810 PrintUsage(JNIEnv* env, jboolean doXUsage)
1811 {
1812 jmethodID initHelp, vmSelect, vmSynonym, vmErgo, printHelp, printXUsageMessage;
1813 jstring jprogname, vm1, vm2;
1814 int i;
1815 jclass cls = GetLauncherHelperClass(env);
1816 NULL_CHECK(cls);
1817 if (doXUsage) {
1818 NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls,
1819 "printXUsageMessage", "(Z)V"));
1820 (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, USE_STDERR);
1821 } else {
1822 NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls,
1823 "initHelpMessage", "(Ljava/lang/String;)V"));
1824
1825 NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage",
1826 "(Ljava/lang/String;Ljava/lang/String;)V"));
1827
1828 NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls,
1829 "appendVmSynonymMessage",
1830 "(Ljava/lang/String;Ljava/lang/String;)V"));
1831 NULL_CHECK(vmErgo = (*env)->GetStaticMethodID(env, cls,
1832 "appendVmErgoMessage", "(ZLjava/lang/String;)V"));
1833
1834 NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls,
1835 "printHelpMessage", "(Z)V"));
1836
1837 NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name));
1838
1839 /* Initialize the usage message with the usual preamble */
1840 (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname);
1841 CHECK_EXCEPTION_RETURN();
1842
1843
1844 /* Assemble the other variant part of the usage */
1845 if ((knownVMs[0].flag == VM_KNOWN) ||
1846 (knownVMs[0].flag == VM_IF_SERVER_CLASS)) {
1847 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[0].name));
1848 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[0].name+1));
1849 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
1850 CHECK_EXCEPTION_RETURN();
1851 }
1852 for (i=1; i<knownVMsCount; i++) {
1853 if (knownVMs[i].flag == VM_KNOWN) {
1854 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1855 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1));
1856 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
1857 CHECK_EXCEPTION_RETURN();
1858 }
1859 }
1860 for (i=1; i<knownVMsCount; i++) {
1861 if (knownVMs[i].flag == VM_ALIASED_TO) {
1862 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1863 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1));
1864 (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2);
1865 CHECK_EXCEPTION_RETURN();
1866 }
1867 }
1868
1869 /* The first known VM is the default */
1870 {
1871 jboolean isServerClassMachine = ServerClassMachine();
1872
1873 const char* defaultVM = knownVMs[0].name+1;
1874 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) && isServerClassMachine) {
1875 defaultVM = knownVMs[0].server_class+1;
1876 }
1877
1878 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, defaultVM));
1879 (*env)->CallStaticVoidMethod(env, cls, vmErgo, isServerClassMachine, vm1);
1880 CHECK_EXCEPTION_RETURN();
1881 }
1882
1883 /* Complete the usage message and print to stderr*/
1884 (*env)->CallStaticVoidMethod(env, cls, printHelp, USE_STDERR);
1885 }
1886 return;
1887 }
1888
1889 /*
1890 * Read the jvm.cfg file and fill the knownJVMs[] array.
1891 *
1892 * The functionality of the jvm.cfg file is subject to change without
1893 * notice and the mechanism will be removed in the future.
1894 *
1895 * The lexical structure of the jvm.cfg file is as follows:
1896 *
1897 * jvmcfg := { vmLine }
1898 * vmLine := knownLine
1899 * | aliasLine
1900 * | warnLine
1901 * | ignoreLine
1902 * | errorLine
1903 * | predicateLine
1904 * | commentLine
1905 * knownLine := flag "KNOWN" EOL
1906 * warnLine := flag "WARN" EOL
1907 * ignoreLine := flag "IGNORE" EOL
1908 * errorLine := flag "ERROR" EOL
1909 * aliasLine := flag "ALIASED_TO" flag EOL
1910 * predicateLine := flag "IF_SERVER_CLASS" flag EOL
1911 * commentLine := "#" text EOL
1912 * flag := "-" identifier
1913 *
1914 * The semantics are that when someone specifies a flag on the command line:
1915 * - if the flag appears on a knownLine, then the identifier is used as
1916 * the name of the directory holding the JVM library (the name of the JVM).
1917 * - if the flag appears as the first flag on an aliasLine, the identifier
1918 * of the second flag is used as the name of the JVM.
1919 * - if the flag appears on a warnLine, the identifier is used as the
1920 * name of the JVM, but a warning is generated.
1921 * - if the flag appears on an ignoreLine, the identifier is recognized as the
1922 * name of a JVM, but the identifier is ignored and the default vm used
1923 * - if the flag appears on an errorLine, an error is generated.
1924 * - if the flag appears as the first flag on a predicateLine, and
1925 * the machine on which you are running passes the predicate indicated,
1926 * then the identifier of the second flag is used as the name of the JVM,
1927 * otherwise the identifier of the first flag is used as the name of the JVM.
1928 * If no flag is given on the command line, the first vmLine of the jvm.cfg
1929 * file determines the name of the JVM.
1930 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file,
1931 * since they only make sense if someone hasn't specified the name of the
1932 * JVM on the command line.
1933 *
1934 * The intent of the jvm.cfg file is to allow several JVM libraries to
1935 * be installed in different subdirectories of a single JRE installation,
1936 * for space-savings and convenience in testing.
1937 * The intent is explicitly not to provide a full aliasing or predicate
1938 * mechanism.
1939 */
1940 jint
1941 ReadKnownVMs(const char *jvmCfgName, jboolean speculative)
1942 {
1943 FILE *jvmCfg;
1944 char line[MAXPATHLEN+20];
1945 int cnt = 0;
1946 int lineno = 0;
1947 jlong start, end;
1948 int vmType;
1949 char *tmpPtr;
1950 char *altVMName = NULL;
1951 char *serverClassVMName = NULL;
1952 static char *whiteSpace = " \t";
1953 if (JLI_IsTraceLauncher()) {
1954 start = CounterGet();
1955 }
1956
1957 jvmCfg = fopen(jvmCfgName, "r");
1958 if (jvmCfg == NULL) {
1959 if (!speculative) {
1960 JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName);
1961 exit(1);
1962 } else {
1963 return -1;
1964 }
1965 }
1966 while (fgets(line, sizeof(line), jvmCfg) != NULL) {
1967 vmType = VM_UNKNOWN;
1968 lineno++;
1969 if (line[0] == '#')
1970 continue;
1971 if (line[0] != '-') {
1972 JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName);
1973 }
1974 if (cnt >= knownVMsLimit) {
1975 GrowKnownVMs(cnt);
1976 }
1977 line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */
1978 tmpPtr = line + JLI_StrCSpn(line, whiteSpace);
1979 if (*tmpPtr == 0) {
1980 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1981 } else {
1982 /* Null-terminate this string for JLI_StringDup below */
1983 *tmpPtr++ = 0;
1984 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
1985 if (*tmpPtr == 0) {
1986 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1987 } else {
1988 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) {
1989 vmType = VM_KNOWN;
1990 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) {
1991 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
1992 if (*tmpPtr != 0) {
1993 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
1994 }
1995 if (*tmpPtr == 0) {
1996 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1997 } else {
1998 /* Null terminate altVMName */
1999 altVMName = tmpPtr;
2000 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2001 *tmpPtr = 0;
2002 vmType = VM_ALIASED_TO;
2003 }
2004 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) {
2005 vmType = VM_WARN;
2006 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) {
2007 vmType = VM_IGNORE;
2008 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) {
2009 vmType = VM_ERROR;
2010 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) {
2011 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2012 if (*tmpPtr != 0) {
2013 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
2014 }
2015 if (*tmpPtr == 0) {
2016 JLI_ReportErrorMessage(CFG_WARN4, lineno, jvmCfgName);
2017 } else {
2018 /* Null terminate server class VM name */
2019 serverClassVMName = tmpPtr;
2020 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2021 *tmpPtr = 0;
2022 vmType = VM_IF_SERVER_CLASS;
2023 }
2024 } else {
2025 JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]);
2026 vmType = VM_KNOWN;
2027 }
2028 }
2029 }
2030
2031 JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line);
2032 if (vmType != VM_UNKNOWN) {
2033 knownVMs[cnt].name = JLI_StringDup(line);
2034 knownVMs[cnt].flag = vmType;
2035 switch (vmType) {
2036 default:
2037 break;
2038 case VM_ALIASED_TO:
2039 knownVMs[cnt].alias = JLI_StringDup(altVMName);
2040 JLI_TraceLauncher(" name: %s vmType: %s alias: %s\n",
2041 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
2042 break;
2043 case VM_IF_SERVER_CLASS:
2044 knownVMs[cnt].server_class = JLI_StringDup(serverClassVMName);
2045 JLI_TraceLauncher(" name: %s vmType: %s server_class: %s\n",
2046 knownVMs[cnt].name, "VM_IF_SERVER_CLASS", knownVMs[cnt].server_class);
2047 break;
2048 }
2049 cnt++;
2050 }
2051 }
2052 fclose(jvmCfg);
2053 knownVMsCount = cnt;
2054
2055 if (JLI_IsTraceLauncher()) {
2056 end = CounterGet();
2057 printf("%ld micro seconds to parse jvm.cfg\n",
2058 (long)(jint)Counter2Micros(end-start));
2059 }
2060
2061 return cnt;
2062 }
2063
2064
2065 static void
2066 GrowKnownVMs(int minimum)
2067 {
2068 struct vmdesc* newKnownVMs;
2069 int newMax;
2070
2071 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit));
2072 if (newMax <= minimum) {
2073 newMax = minimum;
2074 }
2075 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc));
2076 if (knownVMs != NULL) {
2077 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc));
2078 }
2079 JLI_MemFree(knownVMs);
2080 knownVMs = newKnownVMs;
2081 knownVMsLimit = newMax;
2082 }
2083
2084
2085 /* Returns index of VM or -1 if not found */
2086 static int
2087 KnownVMIndex(const char* name)
2088 {
2089 int i;
2090 if (JLI_StrCCmp(name, "-J") == 0) name += 2;
2091 for (i = 0; i < knownVMsCount; i++) {
2092 if (!JLI_StrCmp(name, knownVMs[i].name)) {
2093 return i;
2094 }
2095 }
2096 return -1;
2097 }
2098
2099 static void
2100 FreeKnownVMs()
2101 {
2102 int i;
2103 for (i = 0; i < knownVMsCount; i++) {
2104 JLI_MemFree(knownVMs[i].name);
2105 knownVMs[i].name = NULL;
2106 }
2107 JLI_MemFree(knownVMs);
2108 }
2109
2110 /*
2111 * Displays the splash screen according to the jar file name
2112 * and image file names stored in environment variables
2113 */
2114 void
2115 ShowSplashScreen()
2116 {
2117 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY);
2118 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY);
2119 int data_size;
2120 void *image_data = NULL;
2121 float scale_factor = 1;
2122 char *scaled_splash_name = NULL;
2123 jboolean isImageScaled = JNI_FALSE;
2124 size_t maxScaledImgNameLength = 0;
2125 if (file_name == NULL){
2126 return;
2127 }
2128 maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name);
2129
2130 scaled_splash_name = JLI_MemAlloc(
2131 maxScaledImgNameLength * sizeof(char));
2132 isImageScaled = DoSplashGetScaledImageName(jar_name, file_name,
2133 &scale_factor,
2134 scaled_splash_name, maxScaledImgNameLength);
2135 if (jar_name) {
2136
2137 if (isImageScaled) {
2138 image_data = JLI_JarUnpackFile(
2139 jar_name, scaled_splash_name, &data_size);
2140 }
2141
2142 if (!image_data) {
2143 scale_factor = 1;
2144 image_data = JLI_JarUnpackFile(
2145 jar_name, file_name, &data_size);
2146 }
2147 if (image_data) {
2148 DoSplashInit();
2149 DoSplashSetScaleFactor(scale_factor);
2150 DoSplashLoadMemory(image_data, data_size);
2151 JLI_MemFree(image_data);
2152 }
2153 } else {
2154 DoSplashInit();
2155 if (isImageScaled) {
2156 DoSplashSetScaleFactor(scale_factor);
2157 DoSplashLoadFile(scaled_splash_name);
2158 } else {
2159 DoSplashLoadFile(file_name);
2160 }
2161 }
2162 JLI_MemFree(scaled_splash_name);
2163
2164 DoSplashSetFileJarName(file_name, jar_name);
2165
2166 /*
2167 * Done with all command line processing and potential re-execs so
2168 * clean up the environment.
2169 */
2170 (void)UnsetEnv(ENV_ENTRY);
2171 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY);
2172 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY);
2173
2174 JLI_MemFree(splash_jar_entry);
2175 JLI_MemFree(splash_file_entry);
2176
2177 }
2178
2179 const char*
2180 GetFullVersion()
2181 {
2182 return _fVersion;
2183 }
2184
2185 const char*
2186 GetProgramName()
2187 {
2188 return _program_name;
2189 }
2190
2191 const char*
2192 GetLauncherName()
2193 {
2194 return _launcher_name;
2195 }
2196
2197 jint
2198 GetErgoPolicy()
2199 {
2200 return _ergo_policy;
2201 }
2202
2203 jboolean
2204 IsJavaArgs()
2205 {
2206 return _is_java_args;
2207 }
2208
2209 static jboolean
2210 IsWildCardEnabled()
2211 {
2212 return _wc_enabled;
2213 }
2214
2215 int
2216 ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize,
2217 int argc, char **argv,
2218 int mode, char *what, int ret)
2219 {
2220
2221 /*
2222 * If user doesn't specify stack size, check if VM has a preference.
2223 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will
2224 * return its default stack size through the init args structure.
2225 */
2226 if (threadStackSize == 0) {
2227 struct JDK1_1InitArgs args1_1;
2228 memset((void*)&args1_1, 0, sizeof(args1_1));
2229 args1_1.version = JNI_VERSION_1_1;
2230 ifn->GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */
2231 if (args1_1.javaStackSize > 0) {
2232 threadStackSize = args1_1.javaStackSize;
2233 }
2234 }
2235
2236 { /* Create a new thread to create JVM and invoke main method */
2237 JavaMainArgs args;
2238 int rslt;
2239
2240 args.argc = argc;
2241 args.argv = argv;
2242 args.mode = mode;
2243 args.what = what;
2244 args.ifn = *ifn;
2245
2246 rslt = ContinueInNewThread0(JavaMain, threadStackSize, (void*)&args);
2247 /* If the caller has deemed there is an error we
2248 * simply return that, otherwise we return the value of
2249 * the callee
2250 */
2251 return (ret != 0) ? ret : rslt;
2252 }
2253 }
2254
2255 static void
2256 DumpState()
2257 {
2258 if (!JLI_IsTraceLauncher()) return ;
2259 printf("Launcher state:\n");
2260 printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex());
2261 printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off");
2262 printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off");
2263 printf("\tprogram name:%s\n", GetProgramName());
2264 printf("\tlauncher name:%s\n", GetLauncherName());
2265 printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off");
2266 printf("\tfullversion:%s\n", GetFullVersion());
2267 printf("\tergo_policy:");
2268 switch(GetErgoPolicy()) {
2269 case NEVER_SERVER_CLASS:
2270 printf("NEVER_ACT_AS_A_SERVER_CLASS_MACHINE\n");
2271 break;
2272 case ALWAYS_SERVER_CLASS:
2273 printf("ALWAYS_ACT_AS_A_SERVER_CLASS_MACHINE\n");
2274 break;
2275 default:
2276 printf("DEFAULT_ERGONOMICS_POLICY\n");
2277 }
2278 }
2279
2280 /*
2281 * Return JNI_TRUE for an option string that has no effect but should
2282 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On
2283 * Solaris SPARC, this screening needs to be done if:
2284 * -d32 or -d64 is passed to a binary with an unmatched data model
2285 * (the exec in CreateExecutionEnvironment removes -d<n> options and points the
2286 * exec to the proper binary). In the case of when the data model and the
2287 * requested version is matched, an exec would not occur, and these options
2288 * were erroneously passed to the vm.
2289 */
2290 jboolean
2291 RemovableOption(char * option)
2292 {
2293 /*
2294 * Unconditionally remove both -d32 and -d64 options since only
2295 * the last such options has an effect; e.g.
2296 * java -d32 -d64 -d32 -version
2297 * is equivalent to
2298 * java -d32 -version
2299 */
2300
2301 if( (JLI_StrCCmp(option, "-d32") == 0 ) ||
2302 (JLI_StrCCmp(option, "-d64") == 0 ) )
2303 return JNI_TRUE;
2304 else
2305 return JNI_FALSE;
2306 }
2307
2308 /*
2309 * A utility procedure to always print to stderr
2310 */
2311 void
2312 JLI_ReportMessage(const char* fmt, ...)
2313 {
2314 va_list vl;
2315 va_start(vl, fmt);
2316 vfprintf(stderr, fmt, vl);
2317 fprintf(stderr, "\n");
2318 va_end(vl);
2319 }