1 /* 2 * Copyright (c) 1995, 2019, 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 #include "jni.h" 56 57 /* 58 * A NOTE TO DEVELOPERS: For performance reasons it is important that 59 * the program image remain relatively small until after SelectVersion 60 * CreateExecutionEnvironment have finished their possibly recursive 61 * processing. Watch everything, but resist all temptations to use Java 62 * interfaces. 63 */ 64 65 #define USE_STDERR JNI_TRUE /* we usually print to stderr */ 66 #define USE_STDOUT JNI_FALSE 67 68 static jboolean printVersion = JNI_FALSE; /* print and exit */ 69 static jboolean showVersion = JNI_FALSE; /* print but continue */ 70 static jboolean printUsage = JNI_FALSE; /* print and exit*/ 71 static jboolean printTo = USE_STDERR; /* where to print version/usage */ 72 static jboolean printXUsage = JNI_FALSE; /* print and exit*/ 73 static jboolean dryRun = JNI_FALSE; /* initialize VM and exit */ 74 static char *showSettings = NULL; /* print but continue */ 75 static jboolean showResolvedModules = JNI_FALSE; 76 static jboolean listModules = JNI_FALSE; 77 static char *describeModule = NULL; 78 static jboolean validateModules = JNI_FALSE; 79 80 static const char *_program_name; 81 static const char *_launcher_name; 82 static jboolean _is_java_args = JNI_FALSE; 83 static jboolean _have_classpath = JNI_FALSE; 84 static const char *_fVersion; 85 static jboolean _wc_enabled = JNI_FALSE; 86 87 /* 88 * Entries for splash screen environment variables. 89 * putenv is performed in SelectVersion. We need 90 * them in memory until UnsetEnv, so they are made static 91 * global instead of auto local. 92 */ 93 static char* splash_file_entry = NULL; 94 static char* splash_jar_entry = NULL; 95 96 /* 97 * List of VM options to be specified when the VM is created. 98 */ 99 static JavaVMOption *options; 100 static int numOptions, maxOptions; 101 102 /* 103 * Prototypes for functions internal to launcher. 104 */ 105 static void SetClassPath(const char *s); 106 static void SetMainModule(const char *s); 107 static void SelectVersion(int argc, char **argv, char **main_class); 108 static void SetJvmEnvironment(int argc, char **argv); 109 static jboolean ParseArguments(int *pargc, char ***pargv, 110 int *pmode, char **pwhat, 111 int *pret, const char *jrepath); 112 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv, 113 InvocationFunctions *ifn); 114 static jstring NewPlatformString(JNIEnv *env, char *s); 115 static jclass LoadMainClass(JNIEnv *env, int mode, char *name); 116 static jclass GetApplicationClass(JNIEnv *env); 117 118 static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv); 119 static jboolean AddApplicationOptions(int cpathc, const char **cpathv); 120 static void SetApplicationClassPath(const char**); 121 122 static void PrintJavaVersion(JNIEnv *env, jboolean extraLF); 123 static void PrintUsage(JNIEnv* env, jboolean doXUsage); 124 static void ShowSettings(JNIEnv* env, char *optString); 125 static void ShowResolvedModules(JNIEnv* env); 126 static void ListModules(JNIEnv* env); 127 static void DescribeModule(JNIEnv* env, char* optString); 128 static jboolean ValidateModules(JNIEnv* env); 129 130 static void SetPaths(int argc, char **argv); 131 132 static void DumpState(); 133 134 enum OptionKind { 135 LAUNCHER_OPTION = 0, 136 LAUNCHER_OPTION_WITH_ARGUMENT, 137 LAUNCHER_MAIN_OPTION, 138 VM_LONG_OPTION, 139 VM_LONG_OPTION_WITH_ARGUMENT, 140 VM_OPTION 141 }; 142 143 static int GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue); 144 static jboolean IsOptionWithArgument(int argc, char **argv); 145 146 /* Maximum supported entries from jvm.cfg. */ 147 #define INIT_MAX_KNOWN_VMS 10 148 149 /* Values for vmdesc.flag */ 150 enum vmdesc_flag { 151 VM_UNKNOWN = -1, 152 VM_KNOWN, 153 VM_ALIASED_TO, 154 VM_WARN, 155 VM_ERROR, 156 VM_IF_SERVER_CLASS, 157 VM_IGNORE 158 }; 159 160 struct vmdesc { 161 char *name; 162 int flag; 163 char *alias; 164 char *server_class; 165 }; 166 static struct vmdesc *knownVMs = NULL; 167 static int knownVMsCount = 0; 168 static int knownVMsLimit = 0; 169 170 static void GrowKnownVMs(int minimum); 171 static int KnownVMIndex(const char* name); 172 static void FreeKnownVMs(); 173 static jboolean IsWildCardEnabled(); 174 175 176 #define SOURCE_LAUNCHER_MAIN_ENTRY "jdk.compiler/com.sun.tools.javac.launcher.Main" 177 178 /* 179 * This reports error. VM will not be created and no usage is printed. 180 */ 181 #define REPORT_ERROR(AC_ok, AC_failure_message, AC_questionable_arg) \ 182 do { \ 183 if (!AC_ok) { \ 184 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \ 185 printUsage = JNI_FALSE; \ 186 *pret = 1; \ 187 return JNI_FALSE; \ 188 } \ 189 } while (JNI_FALSE) 190 191 #define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \ 192 do { \ 193 if (AC_arg_count < 1) { \ 194 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \ 195 printUsage = JNI_TRUE; \ 196 *pret = 1; \ 197 return JNI_TRUE; \ 198 } \ 199 } while (JNI_FALSE) 200 201 /* 202 * Running Java code in primordial thread caused many problems. We will 203 * create a new thread to invoke JVM. See 6316197 for more information. 204 */ 205 static jlong threadStackSize = 0; /* stack size of the new thread */ 206 static jlong maxHeapSize = 0; /* max heap size */ 207 static jlong initialHeapSize = 0; /* inital heap size */ 208 209 /* 210 * A minimum -Xss stack size suitable for all platforms. 211 */ 212 #ifndef STACK_SIZE_MINIMUM 213 #define STACK_SIZE_MINIMUM (64 * KB) 214 #endif 215 216 /* 217 * Entry point. 218 */ 219 JNIEXPORT int JNICALL 220 JLI_Launch(int argc, char ** argv, /* main argc, argv */ 221 int jargc, const char** jargv, /* java args */ 222 int appclassc, const char** appclassv, /* app classpath */ 223 const char* fullversion, /* full version defined */ 224 const char* dotversion, /* UNUSED dot version defined */ 225 const char* pname, /* program name */ 226 const char* lname, /* launcher name */ 227 jboolean javaargs, /* JAVA_ARGS */ 228 jboolean cpwildcard, /* classpath wildcard*/ 229 jboolean javaw, /* windows-only javaw */ 230 jint ergo /* unused */ 231 ) 232 { 233 int mode = LM_UNKNOWN; 234 char *what = NULL; 235 char *main_class = NULL; 236 int ret; 237 InvocationFunctions ifn; 238 jlong start, end; 239 char jvmpath[MAXPATHLEN]; 240 char jrepath[MAXPATHLEN]; 241 char jvmcfg[MAXPATHLEN]; 242 243 _fVersion = fullversion; 244 _launcher_name = lname; 245 _program_name = pname; 246 _is_java_args = javaargs; 247 _wc_enabled = cpwildcard; 248 249 InitLauncher(javaw); 250 DumpState(); 251 if (JLI_IsTraceLauncher()) { 252 int i; 253 printf("Java args:\n"); 254 for (i = 0; i < jargc ; i++) { 255 printf("jargv[%d] = %s\n", i, jargv[i]); 256 } 257 printf("Command line args:\n"); 258 for (i = 0; i < argc ; i++) { 259 printf("argv[%d] = %s\n", i, argv[i]); 260 } 261 AddOption("-Dsun.java.launcher.diag=true", NULL); 262 } 263 264 /* 265 * SelectVersion() has several responsibilities: 266 * 267 * 1) Disallow specification of another JRE. With 1.9, another 268 * version of the JRE cannot be invoked. 269 * 2) Allow for a JRE version to invoke JDK 1.9 or later. Since 270 * all mJRE directives have been stripped from the request but 271 * the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been 272 * invoked from the command line. 273 */ 274 SelectVersion(argc, argv, &main_class); 275 276 CreateExecutionEnvironment(&argc, &argv, 277 jrepath, sizeof(jrepath), 278 jvmpath, sizeof(jvmpath), 279 jvmcfg, sizeof(jvmcfg)); 280 281 if (!IsJavaArgs()) { 282 SetJvmEnvironment(argc,argv); 283 } 284 285 ifn.CreateJavaVM = 0; 286 ifn.GetDefaultJavaVMInitArgs = 0; 287 288 if (JLI_IsTraceLauncher()) { 289 start = CounterGet(); 290 } 291 292 if (!LoadJavaVM(jvmpath, &ifn)) { 293 return(6); 294 } 295 296 if (JLI_IsTraceLauncher()) { 297 end = CounterGet(); 298 } 299 300 JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n", 301 (long)(jint)Counter2Micros(end-start)); 302 303 ++argv; 304 --argc; 305 306 if (IsJavaArgs()) { 307 /* Preprocess wrapper arguments */ 308 TranslateApplicationArgs(jargc, jargv, &argc, &argv); 309 if (!AddApplicationOptions(appclassc, appclassv)) { 310 return(1); 311 } 312 } else { 313 /* Set default CLASSPATH */ 314 char* cpath = getenv("CLASSPATH"); 315 if (cpath != NULL) { 316 SetClassPath(cpath); 317 } 318 } 319 320 /* Parse command line options; if the return value of 321 * ParseArguments is false, the program should exit. 322 */ 323 if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath)) { 324 return(ret); 325 } 326 327 /* Override class path if -jar flag was specified */ 328 if (mode == LM_JAR) { 329 SetClassPath(what); /* Override class path */ 330 } 331 332 /* set the -Dsun.java.command pseudo property */ 333 SetJavaCommandLineProp(what, argc, argv); 334 335 /* Set the -Dsun.java.launcher pseudo property */ 336 SetJavaLauncherProp(); 337 338 /* set the -Dsun.java.launcher.* platform properties */ 339 SetJavaLauncherPlatformProps(); 340 341 return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret); 342 } 343 /* 344 * Always detach the main thread so that it appears to have ended when 345 * the application's main method exits. This will invoke the 346 * uncaught exception handler machinery if main threw an 347 * exception. An uncaught exception handler cannot change the 348 * launcher's return code except by calling System.exit. 349 * 350 * Wait for all non-daemon threads to end, then destroy the VM. 351 * This will actually create a trivial new Java waiter thread 352 * named "DestroyJavaVM", but this will be seen as a different 353 * thread from the one that executed main, even though they are 354 * the same C thread. This allows mainThread.join() and 355 * mainThread.isAlive() to work as expected. 356 */ 357 #define LEAVE() \ 358 do { \ 359 if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \ 360 JLI_ReportErrorMessage(JVM_ERROR2); \ 361 ret = 1; \ 362 } \ 363 if (JNI_TRUE) { \ 364 (*vm)->DestroyJavaVM(vm); \ 365 return ret; \ 366 } \ 367 } while (JNI_FALSE) 368 369 #define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \ 370 do { \ 371 if ((*env)->ExceptionOccurred(env)) { \ 372 JLI_ReportExceptionDescription(env); \ 373 LEAVE(); \ 374 } \ 375 if ((CENL_exception) == NULL) { \ 376 JLI_ReportErrorMessage(JNI_ERROR); \ 377 LEAVE(); \ 378 } \ 379 } while (JNI_FALSE) 380 381 #define CHECK_EXCEPTION_LEAVE(CEL_return_value) \ 382 do { \ 383 if ((*env)->ExceptionOccurred(env)) { \ 384 JLI_ReportExceptionDescription(env); \ 385 ret = (CEL_return_value); \ 386 LEAVE(); \ 387 } \ 388 } while (JNI_FALSE) 389 390 391 int 392 JavaMain(void* _args) 393 { 394 JavaMainArgs *args = (JavaMainArgs *)_args; 395 int argc = args->argc; 396 char **argv = args->argv; 397 int mode = args->mode; 398 char *what = args->what; 399 InvocationFunctions ifn = args->ifn; 400 401 JavaVM *vm = 0; 402 JNIEnv *env = 0; 403 jclass mainClass = NULL; 404 jclass appClass = NULL; // actual application class being launched 405 jmethodID mainID; 406 jobjectArray mainArgs; 407 int ret = 0; 408 jlong start, end; 409 410 RegisterThread(); 411 412 /* Initialize the virtual machine */ 413 start = CounterGet(); 414 if (!InitializeJVM(&vm, &env, &ifn)) { 415 JLI_ReportErrorMessage(JVM_ERROR1); 416 exit(1); 417 } 418 419 if (showSettings != NULL) { 420 ShowSettings(env, showSettings); 421 CHECK_EXCEPTION_LEAVE(1); 422 } 423 424 // show resolved modules and continue 425 if (showResolvedModules) { 426 ShowResolvedModules(env); 427 CHECK_EXCEPTION_LEAVE(1); 428 } 429 430 // list observable modules, then exit 431 if (listModules) { 432 ListModules(env); 433 CHECK_EXCEPTION_LEAVE(1); 434 LEAVE(); 435 } 436 437 // describe a module, then exit 438 if (describeModule != NULL) { 439 DescribeModule(env, describeModule); 440 CHECK_EXCEPTION_LEAVE(1); 441 LEAVE(); 442 } 443 444 if (printVersion || showVersion) { 445 PrintJavaVersion(env, showVersion); 446 CHECK_EXCEPTION_LEAVE(0); 447 if (printVersion) { 448 LEAVE(); 449 } 450 } 451 452 // modules have been validated at startup so exit 453 if (validateModules) { 454 LEAVE(); 455 } 456 457 /* If the user specified neither a class name nor a JAR file */ 458 if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) { 459 PrintUsage(env, printXUsage); 460 CHECK_EXCEPTION_LEAVE(1); 461 LEAVE(); 462 } 463 464 FreeKnownVMs(); /* after last possible PrintUsage */ 465 466 if (JLI_IsTraceLauncher()) { 467 end = CounterGet(); 468 JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n", 469 (long)(jint)Counter2Micros(end-start)); 470 } 471 472 /* At this stage, argc/argv have the application's arguments */ 473 if (JLI_IsTraceLauncher()){ 474 int i; 475 printf("%s is '%s'\n", launchModeNames[mode], what); 476 printf("App's argc is %d\n", argc); 477 for (i=0; i < argc; i++) { 478 printf(" argv[%2d] = '%s'\n", i, argv[i]); 479 } 480 } 481 482 ret = 1; 483 484 /* 485 * Get the application's main class. It also checks if the main 486 * method exists. 487 * 488 * See bugid 5030265. The Main-Class name has already been parsed 489 * from the manifest, but not parsed properly for UTF-8 support. 490 * Hence the code here ignores the value previously extracted and 491 * uses the pre-existing code to reextract the value. This is 492 * possibly an end of release cycle expedient. However, it has 493 * also been discovered that passing some character sets through 494 * the environment has "strange" behavior on some variants of 495 * Windows. Hence, maybe the manifest parsing code local to the 496 * launcher should never be enhanced. 497 * 498 * Hence, future work should either: 499 * 1) Correct the local parsing code and verify that the 500 * Main-Class attribute gets properly passed through 501 * all environments, 502 * 2) Remove the vestages of maintaining main_class through 503 * the environment (and remove these comments). 504 * 505 * This method also correctly handles launching existing JavaFX 506 * applications that may or may not have a Main-Class manifest entry. 507 */ 508 mainClass = LoadMainClass(env, mode, what); 509 CHECK_EXCEPTION_NULL_LEAVE(mainClass); 510 /* 511 * In some cases when launching an application that needs a helper, e.g., a 512 * JavaFX application with no main method, the mainClass will not be the 513 * applications own main class but rather a helper class. To keep things 514 * consistent in the UI we need to track and report the application main class. 515 */ 516 appClass = GetApplicationClass(env); 517 NULL_CHECK_RETURN_VALUE(appClass, -1); 518 519 /* Build platform specific argument array */ 520 mainArgs = CreateApplicationArgs(env, argv, argc); 521 CHECK_EXCEPTION_NULL_LEAVE(mainArgs); 522 523 if (dryRun) { 524 ret = 0; 525 LEAVE(); 526 } 527 528 /* 529 * PostJVMInit uses the class name as the application name for GUI purposes, 530 * for example, on OSX this sets the application name in the menu bar for 531 * both SWT and JavaFX. So we'll pass the actual application class here 532 * instead of mainClass as that may be a launcher or helper class instead 533 * of the application class. 534 */ 535 PostJVMInit(env, appClass, vm); 536 CHECK_EXCEPTION_LEAVE(1); 537 538 /* 539 * The LoadMainClass not only loads the main class, it will also ensure 540 * that the main method's signature is correct, therefore further checking 541 * is not required. The main method is invoked here so that extraneous java 542 * stacks are not in the application stack trace. 543 */ 544 mainID = (*env)->GetStaticMethodID(env, mainClass, "main", 545 "([Ljava/lang/String;)V"); 546 CHECK_EXCEPTION_NULL_LEAVE(mainID); 547 548 /* Invoke main method. */ 549 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs); 550 551 /* 552 * The launcher's exit code (in the absence of calls to 553 * System.exit) will be non-zero if main threw an exception. 554 */ 555 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1; 556 557 LEAVE(); 558 } 559 560 /* 561 * Test if the given name is one of the class path options. 562 */ 563 static jboolean 564 IsClassPathOption(const char* name) { 565 return JLI_StrCmp(name, "-classpath") == 0 || 566 JLI_StrCmp(name, "-cp") == 0 || 567 JLI_StrCmp(name, "--class-path") == 0; 568 } 569 570 /* 571 * Test if the given name is a launcher option taking the main entry point. 572 */ 573 static jboolean 574 IsLauncherMainOption(const char* name) { 575 return JLI_StrCmp(name, "--module") == 0 || 576 JLI_StrCmp(name, "-m") == 0; 577 } 578 579 /* 580 * Test if the given name is a white-space launcher option. 581 */ 582 static jboolean 583 IsLauncherOption(const char* name) { 584 return IsClassPathOption(name) || 585 IsLauncherMainOption(name) || 586 JLI_StrCmp(name, "--describe-module") == 0 || 587 JLI_StrCmp(name, "-d") == 0 || 588 JLI_StrCmp(name, "--source") == 0; 589 } 590 591 /* 592 * Test if the given name is a module-system white-space option that 593 * will be passed to the VM with its corresponding long-form option 594 * name and "=" delimiter. 595 */ 596 static jboolean 597 IsModuleOption(const char* name) { 598 return JLI_StrCmp(name, "--module-path") == 0 || 599 JLI_StrCmp(name, "-p") == 0 || 600 JLI_StrCmp(name, "--upgrade-module-path") == 0 || 601 JLI_StrCmp(name, "--add-modules") == 0 || 602 JLI_StrCmp(name, "--limit-modules") == 0 || 603 JLI_StrCmp(name, "--add-exports") == 0 || 604 JLI_StrCmp(name, "--add-opens") == 0 || 605 JLI_StrCmp(name, "--add-reads") == 0 || 606 JLI_StrCmp(name, "--patch-module") == 0; 607 } 608 609 static jboolean 610 IsLongFormModuleOption(const char* name) { 611 return JLI_StrCCmp(name, "--module-path=") == 0 || 612 JLI_StrCCmp(name, "--upgrade-module-path=") == 0 || 613 JLI_StrCCmp(name, "--add-modules=") == 0 || 614 JLI_StrCCmp(name, "--limit-modules=") == 0 || 615 JLI_StrCCmp(name, "--add-exports=") == 0 || 616 JLI_StrCCmp(name, "--add-reads=") == 0 || 617 JLI_StrCCmp(name, "--patch-module=") == 0; 618 } 619 620 /* 621 * Test if the given name has a white space option. 622 */ 623 jboolean 624 IsWhiteSpaceOption(const char* name) { 625 return IsModuleOption(name) || 626 IsLauncherOption(name); 627 } 628 629 /* 630 * Check if it is OK to set the mode. 631 * If the mode was previously set, and should not be changed, 632 * a fatal error is reported. 633 */ 634 static int 635 checkMode(int mode, int newMode, const char *arg) { 636 if (mode == LM_SOURCE) { 637 JLI_ReportErrorMessage(ARG_ERROR14, arg); 638 exit(1); 639 } 640 return newMode; 641 } 642 643 /* 644 * Test if an arg identifies a source file. 645 */ 646 jboolean 647 IsSourceFile(const char *arg) { 648 struct stat st; 649 return (JLI_HasSuffix(arg, ".java") && stat(arg, &st) == 0); 650 } 651 652 /* 653 * Checks the command line options to find which JVM type was 654 * specified. If no command line option was given for the JVM type, 655 * the default type is used. The environment variable 656 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also 657 * checked as ways of specifying which JVM type to invoke. 658 */ 659 char * 660 CheckJvmType(int *pargc, char ***argv, jboolean speculative) { 661 int i, argi; 662 int argc; 663 char **newArgv; 664 int newArgvIdx = 0; 665 int isVMType; 666 int jvmidx = -1; 667 char *jvmtype = getenv("JDK_ALTERNATE_VM"); 668 669 argc = *pargc; 670 671 /* To make things simpler we always copy the argv array */ 672 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *)); 673 674 /* The program name is always present */ 675 newArgv[newArgvIdx++] = (*argv)[0]; 676 677 for (argi = 1; argi < argc; argi++) { 678 char *arg = (*argv)[argi]; 679 isVMType = 0; 680 681 if (IsJavaArgs()) { 682 if (arg[0] != '-') { 683 newArgv[newArgvIdx++] = arg; 684 continue; 685 } 686 } else { 687 if (IsWhiteSpaceOption(arg)) { 688 newArgv[newArgvIdx++] = arg; 689 argi++; 690 if (argi < argc) { 691 newArgv[newArgvIdx++] = (*argv)[argi]; 692 } 693 continue; 694 } 695 if (arg[0] != '-') break; 696 } 697 698 /* Did the user pass an explicit VM type? */ 699 i = KnownVMIndex(arg); 700 if (i >= 0) { 701 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */ 702 isVMType = 1; 703 *pargc = *pargc - 1; 704 } 705 706 /* Did the user specify an "alternate" VM? */ 707 else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) { 708 isVMType = 1; 709 jvmtype = arg+((arg[1]=='X')? 10 : 12); 710 jvmidx = -1; 711 } 712 713 if (!isVMType) { 714 newArgv[newArgvIdx++] = arg; 715 } 716 } 717 718 /* 719 * Finish copying the arguments if we aborted the above loop. 720 * NOTE that if we aborted via "break" then we did NOT copy the 721 * last argument above, and in addition argi will be less than 722 * argc. 723 */ 724 while (argi < argc) { 725 newArgv[newArgvIdx++] = (*argv)[argi]; 726 argi++; 727 } 728 729 /* argv is null-terminated */ 730 newArgv[newArgvIdx] = 0; 731 732 /* Copy back argv */ 733 *argv = newArgv; 734 *pargc = newArgvIdx; 735 736 /* use the default VM type if not specified (no alias processing) */ 737 if (jvmtype == NULL) { 738 char* result = knownVMs[0].name+1; 739 JLI_TraceLauncher("Default VM: %s\n", result); 740 return result; 741 } 742 743 /* if using an alternate VM, no alias processing */ 744 if (jvmidx < 0) 745 return jvmtype; 746 747 /* Resolve aliases first */ 748 { 749 int loopCount = 0; 750 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) { 751 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias); 752 753 if (loopCount > knownVMsCount) { 754 if (!speculative) { 755 JLI_ReportErrorMessage(CFG_ERROR1); 756 exit(1); 757 } else { 758 return "ERROR"; 759 /* break; */ 760 } 761 } 762 763 if (nextIdx < 0) { 764 if (!speculative) { 765 JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias); 766 exit(1); 767 } else { 768 return "ERROR"; 769 } 770 } 771 jvmidx = nextIdx; 772 jvmtype = knownVMs[jvmidx].name+1; 773 loopCount++; 774 } 775 } 776 777 switch (knownVMs[jvmidx].flag) { 778 case VM_WARN: 779 if (!speculative) { 780 JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1); 781 } 782 /* fall through */ 783 case VM_IGNORE: 784 jvmtype = knownVMs[jvmidx=0].name + 1; 785 /* fall through */ 786 case VM_KNOWN: 787 break; 788 case VM_ERROR: 789 if (!speculative) { 790 JLI_ReportErrorMessage(CFG_ERROR3, jvmtype); 791 exit(1); 792 } else { 793 return "ERROR"; 794 } 795 } 796 797 return jvmtype; 798 } 799 800 /* 801 * This method must be called before the VM is loaded, primarily 802 * used to parse and set any VM related options or env variables. 803 * This function is non-destructive leaving the argument list intact. 804 */ 805 static void 806 SetJvmEnvironment(int argc, char **argv) { 807 808 static const char* NMT_Env_Name = "NMT_LEVEL_"; 809 int i; 810 /* process only the launcher arguments */ 811 for (i = 0; i < argc; i++) { 812 char *arg = argv[i]; 813 /* 814 * Since this must be a VM flag we stop processing once we see 815 * an argument the launcher would not have processed beyond (such 816 * as -version or -h), or an argument that indicates the following 817 * arguments are for the application (i.e. the main class name, or 818 * the -jar argument). 819 */ 820 if (i > 0) { 821 char *prev = argv[i - 1]; 822 // skip non-dash arg preceded by class path specifiers 823 if (*arg != '-' && IsWhiteSpaceOption(prev)) { 824 continue; 825 } 826 827 if (*arg != '-' || isTerminalOpt(arg)) { 828 return; 829 } 830 } 831 /* 832 * The following case checks for "-XX:NativeMemoryTracking=value". 833 * If value is non null, an environmental variable set to this value 834 * will be created to be used by the JVM. 835 * The argument is passed to the JVM, which will check validity. 836 * The JVM is responsible for removing the env variable. 837 */ 838 if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) { 839 int retval; 840 // get what follows this parameter, include "=" 841 size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking="); 842 if (JLI_StrLen(arg) > pnlen) { 843 char* value = arg + pnlen; 844 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits 845 846 /* 847 * ensures that malloc successful 848 * DONT JLI_MemFree() pbuf. JLI_PutEnv() uses system call 849 * that could store the address. 850 */ 851 char * pbuf = (char*)JLI_MemAlloc(pbuflen); 852 853 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value); 854 retval = JLI_PutEnv(pbuf); 855 if (JLI_IsTraceLauncher()) { 856 char* envName; 857 char* envBuf; 858 859 // ensures that malloc successful 860 envName = (char*)JLI_MemAlloc(pbuflen); 861 JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid()); 862 863 printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName); 864 printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf); 865 envBuf = getenv(envName); 866 printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf); 867 free(envName); 868 } 869 } 870 } 871 } 872 } 873 874 /* copied from HotSpot function "atomll()" */ 875 static int 876 parse_size(const char *s, jlong *result) { 877 jlong n = 0; 878 int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n); 879 if (args_read != 1) { 880 return 0; 881 } 882 while (*s != '\0' && *s >= '0' && *s <= '9') { 883 s++; 884 } 885 // 4705540: illegal if more characters are found after the first non-digit 886 if (JLI_StrLen(s) > 1) { 887 return 0; 888 } 889 switch (*s) { 890 case 'T': case 't': 891 *result = n * GB * KB; 892 return 1; 893 case 'G': case 'g': 894 *result = n * GB; 895 return 1; 896 case 'M': case 'm': 897 *result = n * MB; 898 return 1; 899 case 'K': case 'k': 900 *result = n * KB; 901 return 1; 902 case '\0': 903 *result = n; 904 return 1; 905 default: 906 /* Create JVM with default stack and let VM handle malformed -Xss string*/ 907 return 0; 908 } 909 } 910 911 /* 912 * Adds a new VM option with the given name and value. 913 */ 914 void 915 AddOption(char *str, void *info) 916 { 917 /* 918 * Expand options array if needed to accommodate at least one more 919 * VM option. 920 */ 921 if (numOptions >= maxOptions) { 922 if (options == 0) { 923 maxOptions = 4; 924 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption)); 925 } else { 926 JavaVMOption *tmp; 927 maxOptions *= 2; 928 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption)); 929 memcpy(tmp, options, numOptions * sizeof(JavaVMOption)); 930 JLI_MemFree(options); 931 options = tmp; 932 } 933 } 934 options[numOptions].optionString = str; 935 options[numOptions++].extraInfo = info; 936 937 if (JLI_StrCCmp(str, "-Xss") == 0) { 938 jlong tmp; 939 if (parse_size(str + 4, &tmp)) { 940 threadStackSize = tmp; 941 /* 942 * Make sure the thread stack size is big enough that we won't get a stack 943 * overflow before the JVM startup code can check to make sure the stack 944 * is big enough. 945 * If the input thread stack size is 0, try to ask HotSpot to determine 946 * a proper value later when creating thread for JavaMain, or use the 947 * system default stack size. VM would create inner threads using its 948 * calculated sizes, forced STACK_SIZE_MINIMUM here may trigger 949 * StackOverflowError in HotSpot. See JDK-8222334 for details. 950 */ 951 if (threadStackSize != 0 && threadStackSize < (jlong)STACK_SIZE_MINIMUM) { 952 threadStackSize = STACK_SIZE_MINIMUM; 953 } 954 } 955 } 956 957 if (JLI_StrCCmp(str, "-Xmx") == 0) { 958 jlong tmp; 959 if (parse_size(str + 4, &tmp)) { 960 maxHeapSize = tmp; 961 } 962 } 963 964 if (JLI_StrCCmp(str, "-Xms") == 0) { 965 jlong tmp; 966 if (parse_size(str + 4, &tmp)) { 967 initialHeapSize = tmp; 968 } 969 } 970 } 971 972 static void 973 SetClassPath(const char *s) 974 { 975 char *def; 976 const char *orig = s; 977 static const char format[] = "-Djava.class.path=%s"; 978 /* 979 * usually we should not get a null pointer, but there are cases where 980 * we might just get one, in which case we simply ignore it, and let the 981 * caller deal with it 982 */ 983 if (s == NULL) 984 return; 985 s = JLI_WildcardExpandClasspath(s); 986 if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s)) 987 // s is became corrupted after expanding wildcards 988 return; 989 def = JLI_MemAlloc(sizeof(format) 990 - 2 /* strlen("%s") */ 991 + JLI_StrLen(s)); 992 sprintf(def, format, s); 993 AddOption(def, NULL); 994 if (s != orig) 995 JLI_MemFree((char *) s); 996 _have_classpath = JNI_TRUE; 997 } 998 999 static void 1000 AddLongFormOption(const char *option, const char *arg) 1001 { 1002 static const char format[] = "%s=%s"; 1003 char *def; 1004 size_t def_len; 1005 1006 def_len = JLI_StrLen(option) + 1 + JLI_StrLen(arg) + 1; 1007 def = JLI_MemAlloc(def_len); 1008 JLI_Snprintf(def, def_len, format, option, arg); 1009 AddOption(def, NULL); 1010 } 1011 1012 static void 1013 SetMainModule(const char *s) 1014 { 1015 static const char format[] = "-Djdk.module.main=%s"; 1016 char* slash = JLI_StrChr(s, '/'); 1017 size_t s_len, def_len; 1018 char *def; 1019 1020 /* value may be <module> or <module>/<mainclass> */ 1021 if (slash == NULL) { 1022 s_len = JLI_StrLen(s); 1023 } else { 1024 s_len = (size_t) (slash - s); 1025 } 1026 def_len = sizeof(format) 1027 - 2 /* strlen("%s") */ 1028 + s_len; 1029 def = JLI_MemAlloc(def_len); 1030 JLI_Snprintf(def, def_len, format, s); 1031 AddOption(def, NULL); 1032 } 1033 1034 /* 1035 * The SelectVersion() routine ensures that an appropriate version of 1036 * the JRE is running. The specification for the appropriate version 1037 * is obtained from either the manifest of a jar file (preferred) or 1038 * from command line options. 1039 * The routine also parses splash screen command line options and 1040 * passes on their values in private environment variables. 1041 */ 1042 static void 1043 SelectVersion(int argc, char **argv, char **main_class) 1044 { 1045 char *arg; 1046 char *operand; 1047 char *version = NULL; 1048 char *jre = NULL; 1049 int jarflag = 0; 1050 int headlessflag = 0; 1051 int restrict_search = -1; /* -1 implies not known */ 1052 manifest_info info; 1053 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "="; 1054 char *splash_file_name = NULL; 1055 char *splash_jar_name = NULL; 1056 char *env_in; 1057 int res; 1058 jboolean has_arg; 1059 1060 /* 1061 * If the version has already been selected, set *main_class 1062 * with the value passed through the environment (if any) and 1063 * simply return. 1064 */ 1065 1066 /* 1067 * This environmental variable can be set by mJRE capable JREs 1068 * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been 1069 * stripped by those JREs. This environmental variable allows 1.9+ 1070 * JREs to be started by these mJRE capable JREs. 1071 * Note that mJRE directives in the jar manifest file would have been 1072 * ignored for a JRE started by another JRE... 1073 * .. skipped for JRE 1.5 and beyond. 1074 * .. not even checked for pre 1.5. 1075 */ 1076 if ((env_in = getenv(ENV_ENTRY)) != NULL) { 1077 if (*env_in != '\0') 1078 *main_class = JLI_StringDup(env_in); 1079 return; 1080 } 1081 1082 /* 1083 * Scan through the arguments for options relevant to multiple JRE 1084 * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8. 1085 * 1086 * This capability is no longer available with JRE versions 1.9 and later. 1087 * These command line options are reported as errors. 1088 */ 1089 1090 argc--; 1091 argv++; 1092 while ((arg = *argv) != 0 && *arg == '-') { 1093 has_arg = IsOptionWithArgument(argc, argv); 1094 if (JLI_StrCCmp(arg, "-version:") == 0) { 1095 JLI_ReportErrorMessage(SPC_ERROR1); 1096 } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) { 1097 JLI_ReportErrorMessage(SPC_ERROR2); 1098 } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) { 1099 JLI_ReportErrorMessage(SPC_ERROR2); 1100 } else { 1101 if (JLI_StrCmp(arg, "-jar") == 0) 1102 jarflag = 1; 1103 if (IsWhiteSpaceOption(arg)) { 1104 if (has_arg) { 1105 argc--; 1106 argv++; 1107 arg = *argv; 1108 } 1109 } 1110 1111 /* 1112 * Checking for headless toolkit option in the some way as AWT does: 1113 * "true" means true and any other value means false 1114 */ 1115 if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) { 1116 headlessflag = 1; 1117 } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) { 1118 headlessflag = 0; 1119 } else if (JLI_StrCCmp(arg, "-splash:") == 0) { 1120 splash_file_name = arg+8; 1121 } 1122 } 1123 argc--; 1124 argv++; 1125 } 1126 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */ 1127 operand = NULL; 1128 } else { 1129 argc--; 1130 operand = *argv++; 1131 } 1132 1133 /* 1134 * If there is a jar file, read the manifest. If the jarfile can't be 1135 * read, the manifest can't be read from the jar file, or the manifest 1136 * is corrupt, issue the appropriate error messages and exit. 1137 * 1138 * Even if there isn't a jar file, construct a manifest_info structure 1139 * containing the command line information. It's a convenient way to carry 1140 * this data around. 1141 */ 1142 if (jarflag && operand) { 1143 if ((res = JLI_ParseManifest(operand, &info)) != 0) { 1144 if (res == -1) 1145 JLI_ReportErrorMessage(JAR_ERROR2, operand); 1146 else 1147 JLI_ReportErrorMessage(JAR_ERROR3, operand); 1148 exit(1); 1149 } 1150 1151 /* 1152 * Command line splash screen option should have precedence 1153 * over the manifest, so the manifest data is used only if 1154 * splash_file_name has not been initialized above during command 1155 * line parsing 1156 */ 1157 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) { 1158 splash_file_name = info.splashscreen_image_file_name; 1159 splash_jar_name = operand; 1160 } 1161 } else { 1162 info.manifest_version = NULL; 1163 info.main_class = NULL; 1164 info.jre_version = NULL; 1165 info.jre_restrict_search = 0; 1166 } 1167 1168 /* 1169 * Passing on splash screen info in environment variables 1170 */ 1171 if (splash_file_name && !headlessflag) { 1172 char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1); 1173 JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "="); 1174 JLI_StrCat(splash_file_entry, splash_file_name); 1175 putenv(splash_file_entry); 1176 } 1177 if (splash_jar_name && !headlessflag) { 1178 char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1); 1179 JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "="); 1180 JLI_StrCat(splash_jar_entry, splash_jar_name); 1181 putenv(splash_jar_entry); 1182 } 1183 1184 1185 /* 1186 * "Valid" returns (other than unrecoverable errors) follow. Set 1187 * main_class as a side-effect of this routine. 1188 */ 1189 if (info.main_class != NULL) 1190 *main_class = JLI_StringDup(info.main_class); 1191 1192 if (info.jre_version == NULL) { 1193 JLI_FreeManifest(); 1194 return; 1195 } 1196 1197 } 1198 1199 /* 1200 * Test if the current argv is an option, i.e. with a leading `-` 1201 * and followed with an argument without a leading `-`. 1202 */ 1203 static jboolean 1204 IsOptionWithArgument(int argc, char** argv) { 1205 char* option; 1206 char* arg; 1207 1208 if (argc <= 1) 1209 return JNI_FALSE; 1210 1211 option = *argv; 1212 arg = *(argv+1); 1213 return *option == '-' && *arg != '-'; 1214 } 1215 1216 /* 1217 * Gets the option, and its argument if the option has an argument. 1218 * It will update *pargc, **pargv to the next option. 1219 */ 1220 static int 1221 GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) { 1222 int argc = *pargc; 1223 char** argv = *pargv; 1224 char* arg = *argv; 1225 1226 char* option = arg; 1227 char* value = NULL; 1228 char* equals = NULL; 1229 int kind = LAUNCHER_OPTION; 1230 jboolean has_arg = JNI_FALSE; 1231 1232 // check if this option may be a white-space option with an argument 1233 has_arg = IsOptionWithArgument(argc, argv); 1234 1235 argv++; --argc; 1236 if (IsLauncherOption(arg)) { 1237 if (has_arg) { 1238 value = *argv; 1239 argv++; --argc; 1240 } 1241 kind = IsLauncherMainOption(arg) ? LAUNCHER_MAIN_OPTION 1242 : LAUNCHER_OPTION_WITH_ARGUMENT; 1243 } else if (IsModuleOption(arg)) { 1244 kind = VM_LONG_OPTION_WITH_ARGUMENT; 1245 if (has_arg) { 1246 value = *argv; 1247 argv++; --argc; 1248 } 1249 1250 /* 1251 * Support short form alias 1252 */ 1253 if (JLI_StrCmp(arg, "-p") == 0) { 1254 option = "--module-path"; 1255 } 1256 1257 } else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) { 1258 value = equals+1; 1259 if (JLI_StrCCmp(arg, "--describe-module=") == 0 || 1260 JLI_StrCCmp(arg, "--module=") == 0 || 1261 JLI_StrCCmp(arg, "--class-path=") == 0|| 1262 JLI_StrCCmp(arg, "--source=") == 0) { 1263 kind = LAUNCHER_OPTION_WITH_ARGUMENT; 1264 } else { 1265 kind = VM_LONG_OPTION; 1266 } 1267 } 1268 1269 *pargc = argc; 1270 *pargv = argv; 1271 *poption = option; 1272 *pvalue = value; 1273 return kind; 1274 } 1275 1276 /* 1277 * Parses command line arguments. Returns JNI_FALSE if launcher 1278 * should exit without starting vm, returns JNI_TRUE if vm needs 1279 * to be started to process given options. *pret (the launcher 1280 * process return value) is set to 0 for a normal exit. 1281 */ 1282 static jboolean 1283 ParseArguments(int *pargc, char ***pargv, 1284 int *pmode, char **pwhat, 1285 int *pret, const char *jrepath) 1286 { 1287 int argc = *pargc; 1288 char **argv = *pargv; 1289 int mode = LM_UNKNOWN; 1290 char *arg; 1291 1292 *pret = 0; 1293 1294 while ((arg = *argv) != 0 && *arg == '-') { 1295 char *option = NULL; 1296 char *value = NULL; 1297 int kind = GetOpt(&argc, &argv, &option, &value); 1298 jboolean has_arg = value != NULL && JLI_StrLen(value) > 0; 1299 jboolean has_arg_any_len = value != NULL; 1300 1301 /* 1302 * Option to set main entry point 1303 */ 1304 if (JLI_StrCmp(arg, "-jar") == 0) { 1305 ARG_CHECK(argc, ARG_ERROR2, arg); 1306 mode = checkMode(mode, LM_JAR, arg); 1307 } else if (JLI_StrCmp(arg, "--module") == 0 || 1308 JLI_StrCCmp(arg, "--module=") == 0 || 1309 JLI_StrCmp(arg, "-m") == 0) { 1310 REPORT_ERROR (has_arg, ARG_ERROR5, arg); 1311 SetMainModule(value); 1312 mode = checkMode(mode, LM_MODULE, arg); 1313 if (has_arg) { 1314 *pwhat = value; 1315 break; 1316 } 1317 } else if (JLI_StrCmp(arg, "--source") == 0 || 1318 JLI_StrCCmp(arg, "--source=") == 0) { 1319 REPORT_ERROR (has_arg, ARG_ERROR13, arg); 1320 mode = LM_SOURCE; 1321 if (has_arg) { 1322 const char *prop = "-Djdk.internal.javac.source="; 1323 size_t size = JLI_StrLen(prop) + JLI_StrLen(value) + 1; 1324 char *propValue = (char *)JLI_MemAlloc(size); 1325 JLI_Snprintf(propValue, size, "%s%s", prop, value); 1326 AddOption(propValue, NULL); 1327 } 1328 } else if (JLI_StrCmp(arg, "--class-path") == 0 || 1329 JLI_StrCCmp(arg, "--class-path=") == 0 || 1330 JLI_StrCmp(arg, "-classpath") == 0 || 1331 JLI_StrCmp(arg, "-cp") == 0) { 1332 REPORT_ERROR (has_arg_any_len, ARG_ERROR1, arg); 1333 SetClassPath(value); 1334 if (mode != LM_SOURCE) { 1335 mode = LM_CLASS; 1336 } 1337 } else if (JLI_StrCmp(arg, "--list-modules") == 0) { 1338 listModules = JNI_TRUE; 1339 } else if (JLI_StrCmp(arg, "--show-resolved-modules") == 0) { 1340 showResolvedModules = JNI_TRUE; 1341 } else if (JLI_StrCmp(arg, "--validate-modules") == 0) { 1342 AddOption("-Djdk.module.validation=true", NULL); 1343 validateModules = JNI_TRUE; 1344 } else if (JLI_StrCmp(arg, "--describe-module") == 0 || 1345 JLI_StrCCmp(arg, "--describe-module=") == 0 || 1346 JLI_StrCmp(arg, "-d") == 0) { 1347 REPORT_ERROR (has_arg_any_len, ARG_ERROR12, arg); 1348 describeModule = value; 1349 /* 1350 * Parse white-space options 1351 */ 1352 } else if (has_arg) { 1353 if (kind == VM_LONG_OPTION) { 1354 AddOption(option, NULL); 1355 } else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) { 1356 AddLongFormOption(option, value); 1357 } 1358 /* 1359 * Error missing argument 1360 */ 1361 } else if (!has_arg && (JLI_StrCmp(arg, "--module-path") == 0 || 1362 JLI_StrCmp(arg, "-p") == 0 || 1363 JLI_StrCmp(arg, "--upgrade-module-path") == 0)) { 1364 REPORT_ERROR (has_arg, ARG_ERROR4, arg); 1365 1366 } else if (!has_arg && (IsModuleOption(arg) || IsLongFormModuleOption(arg))) { 1367 REPORT_ERROR (has_arg, ARG_ERROR6, arg); 1368 /* 1369 * The following cases will cause the argument parsing to stop 1370 */ 1371 } else if (JLI_StrCmp(arg, "-help") == 0 || 1372 JLI_StrCmp(arg, "-h") == 0 || 1373 JLI_StrCmp(arg, "-?") == 0) { 1374 printUsage = JNI_TRUE; 1375 return JNI_TRUE; 1376 } else if (JLI_StrCmp(arg, "--help") == 0) { 1377 printUsage = JNI_TRUE; 1378 printTo = USE_STDOUT; 1379 return JNI_TRUE; 1380 } else if (JLI_StrCmp(arg, "-version") == 0) { 1381 printVersion = JNI_TRUE; 1382 return JNI_TRUE; 1383 } else if (JLI_StrCmp(arg, "--version") == 0) { 1384 printVersion = JNI_TRUE; 1385 printTo = USE_STDOUT; 1386 return JNI_TRUE; 1387 } else if (JLI_StrCmp(arg, "-showversion") == 0) { 1388 showVersion = JNI_TRUE; 1389 } else if (JLI_StrCmp(arg, "--show-version") == 0) { 1390 showVersion = JNI_TRUE; 1391 printTo = USE_STDOUT; 1392 } else if (JLI_StrCmp(arg, "--dry-run") == 0) { 1393 dryRun = JNI_TRUE; 1394 } else if (JLI_StrCmp(arg, "-X") == 0) { 1395 printXUsage = JNI_TRUE; 1396 return JNI_TRUE; 1397 } else if (JLI_StrCmp(arg, "--help-extra") == 0) { 1398 printXUsage = JNI_TRUE; 1399 printTo = USE_STDOUT; 1400 return JNI_TRUE; 1401 /* 1402 * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT. 1403 * In the latter case, any SUBOPT value not recognized will default to "all" 1404 */ 1405 } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 || 1406 JLI_StrCCmp(arg, "-XshowSettings:") == 0) { 1407 showSettings = arg; 1408 } else if (JLI_StrCmp(arg, "-Xdiag") == 0) { 1409 AddOption("-Dsun.java.launcher.diag=true", NULL); 1410 } else if (JLI_StrCmp(arg, "--show-module-resolution") == 0) { 1411 AddOption("-Djdk.module.showModuleResolution=true", NULL); 1412 /* 1413 * The following case provide backward compatibility with old-style 1414 * command line options. 1415 */ 1416 } else if (JLI_StrCmp(arg, "-fullversion") == 0) { 1417 JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion()); 1418 return JNI_FALSE; 1419 } else if (JLI_StrCmp(arg, "--full-version") == 0) { 1420 JLI_ShowMessage("%s %s", _launcher_name, GetFullVersion()); 1421 return JNI_FALSE; 1422 } else if (JLI_StrCmp(arg, "-verbosegc") == 0) { 1423 AddOption("-verbose:gc", NULL); 1424 } else if (JLI_StrCmp(arg, "-t") == 0) { 1425 AddOption("-Xt", NULL); 1426 } else if (JLI_StrCmp(arg, "-tm") == 0) { 1427 AddOption("-Xtm", NULL); 1428 } else if (JLI_StrCmp(arg, "-debug") == 0) { 1429 AddOption("-Xdebug", NULL); 1430 } else if (JLI_StrCmp(arg, "-noclassgc") == 0) { 1431 AddOption("-Xnoclassgc", NULL); 1432 } else if (JLI_StrCmp(arg, "-Xfuture") == 0) { 1433 AddOption("-Xverify:all", NULL); 1434 } else if (JLI_StrCmp(arg, "-verify") == 0) { 1435 AddOption("-Xverify:all", NULL); 1436 } else if (JLI_StrCmp(arg, "-verifyremote") == 0) { 1437 AddOption("-Xverify:remote", NULL); 1438 } else if (JLI_StrCmp(arg, "-noverify") == 0) { 1439 AddOption("-Xverify:none", NULL); 1440 } else if (JLI_StrCCmp(arg, "-ss") == 0 || 1441 JLI_StrCCmp(arg, "-oss") == 0 || 1442 JLI_StrCCmp(arg, "-ms") == 0 || 1443 JLI_StrCCmp(arg, "-mx") == 0) { 1444 char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6); 1445 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */ 1446 AddOption(tmp, NULL); 1447 } else if (JLI_StrCmp(arg, "-checksource") == 0 || 1448 JLI_StrCmp(arg, "-cs") == 0 || 1449 JLI_StrCmp(arg, "-noasyncgc") == 0) { 1450 /* No longer supported */ 1451 JLI_ReportErrorMessage(ARG_WARN, arg); 1452 } else if (JLI_StrCCmp(arg, "-splash:") == 0) { 1453 ; /* Ignore machine independent options already handled */ 1454 } else if (ProcessPlatformOption(arg)) { 1455 ; /* Processing of platform dependent options */ 1456 } else { 1457 /* java.class.path set on the command line */ 1458 if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) { 1459 _have_classpath = JNI_TRUE; 1460 } 1461 AddOption(arg, NULL); 1462 } 1463 } 1464 1465 if (*pwhat == NULL && --argc >= 0) { 1466 *pwhat = *argv++; 1467 } 1468 1469 if (*pwhat == NULL) { 1470 /* LM_UNKNOWN okay for options that exit */ 1471 if (!listModules && !describeModule && !validateModules) { 1472 *pret = 1; 1473 } 1474 } else if (mode == LM_UNKNOWN) { 1475 /* default to LM_CLASS if -m, -jar and -cp options are 1476 * not specified */ 1477 if (!_have_classpath) { 1478 SetClassPath("."); 1479 } 1480 mode = IsSourceFile(arg) ? LM_SOURCE : LM_CLASS; 1481 } else if (mode == LM_CLASS && IsSourceFile(arg)) { 1482 /* override LM_CLASS mode if given a source file */ 1483 mode = LM_SOURCE; 1484 } 1485 1486 if (mode == LM_SOURCE) { 1487 AddOption("--add-modules=ALL-DEFAULT", NULL); 1488 *pwhat = SOURCE_LAUNCHER_MAIN_ENTRY; 1489 // adjust (argc, argv) so that the name of the source file 1490 // is included in the args passed to the source launcher 1491 // main entry class 1492 *pargc = argc + 1; 1493 *pargv = argv - 1; 1494 } else { 1495 if (argc >= 0) { 1496 *pargc = argc; 1497 *pargv = argv; 1498 } 1499 } 1500 1501 *pmode = mode; 1502 1503 return JNI_TRUE; 1504 } 1505 1506 /* 1507 * Initializes the Java Virtual Machine. Also frees options array when 1508 * finished. 1509 */ 1510 static jboolean 1511 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn) 1512 { 1513 JavaVMInitArgs args; 1514 jint r; 1515 1516 memset(&args, 0, sizeof(args)); 1517 args.version = JNI_VERSION_1_2; 1518 args.nOptions = numOptions; 1519 args.options = options; 1520 args.ignoreUnrecognized = JNI_FALSE; 1521 1522 if (JLI_IsTraceLauncher()) { 1523 int i = 0; 1524 printf("JavaVM args:\n "); 1525 printf("version 0x%08lx, ", (long)args.version); 1526 printf("ignoreUnrecognized is %s, ", 1527 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE"); 1528 printf("nOptions is %ld\n", (long)args.nOptions); 1529 for (i = 0; i < numOptions; i++) 1530 printf(" option[%2d] = '%s'\n", 1531 i, args.options[i].optionString); 1532 } 1533 1534 r = ifn->CreateJavaVM(pvm, (void **)penv, &args); 1535 JLI_MemFree(options); 1536 return r == JNI_OK; 1537 } 1538 1539 static jclass helperClass = NULL; 1540 1541 jclass 1542 GetLauncherHelperClass(JNIEnv *env) 1543 { 1544 if (helperClass == NULL) { 1545 NULL_CHECK0(helperClass = FindBootStrapClass(env, 1546 "sun/launcher/LauncherHelper")); 1547 } 1548 return helperClass; 1549 } 1550 1551 static jmethodID makePlatformStringMID = NULL; 1552 /* 1553 * Returns a new Java string object for the specified platform string. 1554 */ 1555 static jstring 1556 NewPlatformString(JNIEnv *env, char *s) 1557 { 1558 int len = (int)JLI_StrLen(s); 1559 jbyteArray ary; 1560 jclass cls = GetLauncherHelperClass(env); 1561 NULL_CHECK0(cls); 1562 if (s == NULL) 1563 return 0; 1564 1565 ary = (*env)->NewByteArray(env, len); 1566 if (ary != 0) { 1567 jstring str = 0; 1568 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s); 1569 if (!(*env)->ExceptionOccurred(env)) { 1570 if (makePlatformStringMID == NULL) { 1571 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env, 1572 cls, "makePlatformString", "(Z[B)Ljava/lang/String;")); 1573 } 1574 str = (*env)->CallStaticObjectMethod(env, cls, 1575 makePlatformStringMID, USE_STDERR, ary); 1576 CHECK_EXCEPTION_RETURN_VALUE(0); 1577 (*env)->DeleteLocalRef(env, ary); 1578 return str; 1579 } 1580 } 1581 return 0; 1582 } 1583 1584 /* 1585 * Returns a new array of Java string objects for the specified 1586 * array of platform strings. 1587 */ 1588 jobjectArray 1589 NewPlatformStringArray(JNIEnv *env, char **strv, int strc) 1590 { 1591 jarray cls; 1592 jarray ary; 1593 int i; 1594 1595 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String")); 1596 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0)); 1597 CHECK_EXCEPTION_RETURN_VALUE(0); 1598 for (i = 0; i < strc; i++) { 1599 jstring str = NewPlatformString(env, *strv++); 1600 NULL_CHECK0(str); 1601 (*env)->SetObjectArrayElement(env, ary, i, str); 1602 (*env)->DeleteLocalRef(env, str); 1603 } 1604 return ary; 1605 } 1606 1607 /* 1608 * Loads a class and verifies that the main class is present and it is ok to 1609 * call it for more details refer to the java implementation. 1610 */ 1611 static jclass 1612 LoadMainClass(JNIEnv *env, int mode, char *name) 1613 { 1614 jmethodID mid; 1615 jstring str; 1616 jobject result; 1617 jlong start, end; 1618 jclass cls = GetLauncherHelperClass(env); 1619 NULL_CHECK0(cls); 1620 if (JLI_IsTraceLauncher()) { 1621 start = CounterGet(); 1622 } 1623 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls, 1624 "checkAndLoadMain", 1625 "(ZILjava/lang/String;)Ljava/lang/Class;")); 1626 1627 NULL_CHECK0(str = NewPlatformString(env, name)); 1628 NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid, 1629 USE_STDERR, mode, str)); 1630 1631 if (JLI_IsTraceLauncher()) { 1632 end = CounterGet(); 1633 printf("%ld micro seconds to load main class\n", 1634 (long)(jint)Counter2Micros(end-start)); 1635 printf("----%s----\n", JLDEBUG_ENV_ENTRY); 1636 } 1637 1638 return (jclass)result; 1639 } 1640 1641 static jclass 1642 GetApplicationClass(JNIEnv *env) 1643 { 1644 jmethodID mid; 1645 jclass appClass; 1646 jclass cls = GetLauncherHelperClass(env); 1647 NULL_CHECK0(cls); 1648 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls, 1649 "getApplicationClass", 1650 "()Ljava/lang/Class;")); 1651 1652 appClass = (*env)->CallStaticObjectMethod(env, cls, mid); 1653 CHECK_EXCEPTION_RETURN_VALUE(0); 1654 return appClass; 1655 } 1656 1657 static char* expandWildcardOnLongOpt(char* arg) { 1658 char *p, *value; 1659 size_t optLen, valueLen; 1660 p = JLI_StrChr(arg, '='); 1661 1662 if (p == NULL || p[1] == '\0') { 1663 JLI_ReportErrorMessage(ARG_ERROR1, arg); 1664 exit(1); 1665 } 1666 p++; 1667 value = (char *) JLI_WildcardExpandClasspath(p); 1668 if (p == value) { 1669 // no wildcard 1670 return arg; 1671 } 1672 1673 optLen = p - arg; 1674 valueLen = JLI_StrLen(value); 1675 p = JLI_MemAlloc(optLen + valueLen + 1); 1676 memcpy(p, arg, optLen); 1677 memcpy(p + optLen, value, valueLen); 1678 p[optLen + valueLen] = '\0'; 1679 return p; 1680 } 1681 1682 /* 1683 * For tools, convert command line args thus: 1684 * javac -cp foo:foo/"*" -J-ms32m ... 1685 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ... 1686 * 1687 * Takes 4 parameters, and returns the populated arguments 1688 */ 1689 static void 1690 TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv) 1691 { 1692 int argc = *pargc; 1693 char **argv = *pargv; 1694 int nargc = argc + jargc; 1695 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *)); 1696 int i; 1697 1698 *pargc = nargc; 1699 *pargv = nargv; 1700 1701 /* Copy the VM arguments (i.e. prefixed with -J) */ 1702 for (i = 0; i < jargc; i++) { 1703 const char *arg = jargv[i]; 1704 if (arg[0] == '-' && arg[1] == 'J') { 1705 *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2); 1706 } 1707 } 1708 1709 for (i = 0; i < argc; i++) { 1710 char *arg = argv[i]; 1711 if (arg[0] == '-' && arg[1] == 'J') { 1712 if (arg[2] == '\0') { 1713 JLI_ReportErrorMessage(ARG_ERROR3); 1714 exit(1); 1715 } 1716 *nargv++ = arg + 2; 1717 } 1718 } 1719 1720 /* Copy the rest of the arguments */ 1721 for (i = 0; i < jargc ; i++) { 1722 const char *arg = jargv[i]; 1723 if (arg[0] != '-' || arg[1] != 'J') { 1724 *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg); 1725 } 1726 } 1727 for (i = 0; i < argc; i++) { 1728 char *arg = argv[i]; 1729 if (arg[0] == '-') { 1730 if (arg[1] == 'J') 1731 continue; 1732 if (IsWildCardEnabled()) { 1733 if (IsClassPathOption(arg) && i < argc - 1) { 1734 *nargv++ = arg; 1735 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]); 1736 i++; 1737 continue; 1738 } 1739 if (JLI_StrCCmp(arg, "--class-path=") == 0) { 1740 *nargv++ = expandWildcardOnLongOpt(arg); 1741 continue; 1742 } 1743 } 1744 } 1745 *nargv++ = arg; 1746 } 1747 *nargv = 0; 1748 } 1749 1750 /* 1751 * For our tools, we try to add 3 VM options: 1752 * -Denv.class.path=<envcp> 1753 * -Dapplication.home=<apphome> 1754 * -Djava.class.path=<appcp> 1755 * <envcp> is the user's setting of CLASSPATH -- for instance the user 1756 * tells javac where to find binary classes through this environment 1757 * variable. Notice that users will be able to compile against our 1758 * tools classes (sun.tools.javac.Main) only if they explicitly add 1759 * tools.jar to CLASSPATH. 1760 * <apphome> is the directory where the application is installed. 1761 * <appcp> is the classpath to where our apps' classfiles are. 1762 */ 1763 static jboolean 1764 AddApplicationOptions(int cpathc, const char **cpathv) 1765 { 1766 char *envcp, *appcp, *apphome; 1767 char home[MAXPATHLEN]; /* application home */ 1768 char separator[] = { PATH_SEPARATOR, '\0' }; 1769 int size, i; 1770 1771 { 1772 const char *s = getenv("CLASSPATH"); 1773 if (s) { 1774 s = (char *) JLI_WildcardExpandClasspath(s); 1775 /* 40 for -Denv.class.path= */ 1776 if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow 1777 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40); 1778 sprintf(envcp, "-Denv.class.path=%s", s); 1779 AddOption(envcp, NULL); 1780 } 1781 } 1782 } 1783 1784 if (!GetApplicationHome(home, sizeof(home))) { 1785 JLI_ReportErrorMessage(CFG_ERROR5); 1786 return JNI_FALSE; 1787 } 1788 1789 /* 40 for '-Dapplication.home=' */ 1790 apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40); 1791 sprintf(apphome, "-Dapplication.home=%s", home); 1792 AddOption(apphome, NULL); 1793 1794 /* How big is the application's classpath? */ 1795 if (cpathc > 0) { 1796 size = 40; /* 40: "-Djava.class.path=" */ 1797 for (i = 0; i < cpathc; i++) { 1798 size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */ 1799 } 1800 appcp = (char *)JLI_MemAlloc(size + 1); 1801 JLI_StrCpy(appcp, "-Djava.class.path="); 1802 for (i = 0; i < cpathc; i++) { 1803 JLI_StrCat(appcp, home); /* c:\program files\myapp */ 1804 JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */ 1805 JLI_StrCat(appcp, separator); /* ; */ 1806 } 1807 appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */ 1808 AddOption(appcp, NULL); 1809 } 1810 return JNI_TRUE; 1811 } 1812 1813 /* 1814 * inject the -Dsun.java.command pseudo property into the args structure 1815 * this pseudo property is used in the HotSpot VM to expose the 1816 * Java class name and arguments to the main method to the VM. The 1817 * HotSpot VM uses this pseudo property to store the Java class name 1818 * (or jar file name) and the arguments to the class's main method 1819 * to the instrumentation memory region. The sun.java.command pseudo 1820 * property is not exported by HotSpot to the Java layer. 1821 */ 1822 void 1823 SetJavaCommandLineProp(char *what, int argc, char **argv) 1824 { 1825 1826 int i = 0; 1827 size_t len = 0; 1828 char* javaCommand = NULL; 1829 char* dashDstr = "-Dsun.java.command="; 1830 1831 if (what == NULL) { 1832 /* unexpected, one of these should be set. just return without 1833 * setting the property 1834 */ 1835 return; 1836 } 1837 1838 /* determine the amount of memory to allocate assuming 1839 * the individual components will be space separated 1840 */ 1841 len = JLI_StrLen(what); 1842 for (i = 0; i < argc; i++) { 1843 len += JLI_StrLen(argv[i]) + 1; 1844 } 1845 1846 /* allocate the memory */ 1847 javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1); 1848 1849 /* build the -D string */ 1850 *javaCommand = '\0'; 1851 JLI_StrCat(javaCommand, dashDstr); 1852 JLI_StrCat(javaCommand, what); 1853 1854 for (i = 0; i < argc; i++) { 1855 /* the components of the string are space separated. In 1856 * the case of embedded white space, the relationship of 1857 * the white space separated components to their true 1858 * positional arguments will be ambiguous. This issue may 1859 * be addressed in a future release. 1860 */ 1861 JLI_StrCat(javaCommand, " "); 1862 JLI_StrCat(javaCommand, argv[i]); 1863 } 1864 1865 AddOption(javaCommand, NULL); 1866 } 1867 1868 /* 1869 * JVM would like to know if it's created by a standard Sun launcher, or by 1870 * user native application, the following property indicates the former. 1871 */ 1872 void 1873 SetJavaLauncherProp() { 1874 AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL); 1875 } 1876 1877 /* 1878 * Prints the version information from the java.version and other properties. 1879 */ 1880 static void 1881 PrintJavaVersion(JNIEnv *env, jboolean extraLF) 1882 { 1883 jclass ver; 1884 jmethodID print; 1885 1886 NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps")); 1887 NULL_CHECK(print = (*env)->GetStaticMethodID(env, 1888 ver, 1889 (extraLF == JNI_TRUE) ? "println" : "print", 1890 "(Z)V" 1891 ) 1892 ); 1893 1894 (*env)->CallStaticVoidMethod(env, ver, print, printTo); 1895 } 1896 1897 /* 1898 * Prints all the Java settings, see the java implementation for more details. 1899 */ 1900 static void 1901 ShowSettings(JNIEnv *env, char *optString) 1902 { 1903 jmethodID showSettingsID; 1904 jstring joptString; 1905 jclass cls = GetLauncherHelperClass(env); 1906 NULL_CHECK(cls); 1907 NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls, 1908 "showSettings", "(ZLjava/lang/String;JJJ)V")); 1909 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString)); 1910 (*env)->CallStaticVoidMethod(env, cls, showSettingsID, 1911 USE_STDERR, 1912 joptString, 1913 (jlong)initialHeapSize, 1914 (jlong)maxHeapSize, 1915 (jlong)threadStackSize); 1916 } 1917 1918 /** 1919 * Show resolved modules 1920 */ 1921 static void 1922 ShowResolvedModules(JNIEnv *env) 1923 { 1924 jmethodID showResolvedModulesID; 1925 jclass cls = GetLauncherHelperClass(env); 1926 NULL_CHECK(cls); 1927 NULL_CHECK(showResolvedModulesID = (*env)->GetStaticMethodID(env, cls, 1928 "showResolvedModules", "()V")); 1929 (*env)->CallStaticVoidMethod(env, cls, showResolvedModulesID); 1930 } 1931 1932 /** 1933 * List observable modules 1934 */ 1935 static void 1936 ListModules(JNIEnv *env) 1937 { 1938 jmethodID listModulesID; 1939 jclass cls = GetLauncherHelperClass(env); 1940 NULL_CHECK(cls); 1941 NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls, 1942 "listModules", "()V")); 1943 (*env)->CallStaticVoidMethod(env, cls, listModulesID); 1944 } 1945 1946 /** 1947 * Describe a module 1948 */ 1949 static void 1950 DescribeModule(JNIEnv *env, char *optString) 1951 { 1952 jmethodID describeModuleID; 1953 jstring joptString = NULL; 1954 jclass cls = GetLauncherHelperClass(env); 1955 NULL_CHECK(cls); 1956 NULL_CHECK(describeModuleID = (*env)->GetStaticMethodID(env, cls, 1957 "describeModule", "(Ljava/lang/String;)V")); 1958 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString)); 1959 (*env)->CallStaticVoidMethod(env, cls, describeModuleID, joptString); 1960 } 1961 1962 /* 1963 * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java 1964 */ 1965 static void 1966 PrintUsage(JNIEnv* env, jboolean doXUsage) 1967 { 1968 jmethodID initHelp, vmSelect, vmSynonym, printHelp, printXUsageMessage; 1969 jstring jprogname, vm1, vm2; 1970 int i; 1971 jclass cls = GetLauncherHelperClass(env); 1972 NULL_CHECK(cls); 1973 if (doXUsage) { 1974 NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls, 1975 "printXUsageMessage", "(Z)V")); 1976 (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, printTo); 1977 } else { 1978 NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls, 1979 "initHelpMessage", "(Ljava/lang/String;)V")); 1980 1981 NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage", 1982 "(Ljava/lang/String;Ljava/lang/String;)V")); 1983 1984 NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls, 1985 "appendVmSynonymMessage", 1986 "(Ljava/lang/String;Ljava/lang/String;)V")); 1987 1988 NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls, 1989 "printHelpMessage", "(Z)V")); 1990 1991 NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name)); 1992 1993 /* Initialize the usage message with the usual preamble */ 1994 (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname); 1995 CHECK_EXCEPTION_RETURN(); 1996 1997 1998 /* Assemble the other variant part of the usage */ 1999 for (i=1; i<knownVMsCount; i++) { 2000 if (knownVMs[i].flag == VM_KNOWN) { 2001 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name)); 2002 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1)); 2003 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2); 2004 CHECK_EXCEPTION_RETURN(); 2005 } 2006 } 2007 for (i=1; i<knownVMsCount; i++) { 2008 if (knownVMs[i].flag == VM_ALIASED_TO) { 2009 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name)); 2010 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1)); 2011 (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2); 2012 CHECK_EXCEPTION_RETURN(); 2013 } 2014 } 2015 2016 /* Complete the usage message and print to stderr*/ 2017 (*env)->CallStaticVoidMethod(env, cls, printHelp, printTo); 2018 } 2019 return; 2020 } 2021 2022 /* 2023 * Read the jvm.cfg file and fill the knownJVMs[] array. 2024 * 2025 * The functionality of the jvm.cfg file is subject to change without 2026 * notice and the mechanism will be removed in the future. 2027 * 2028 * The lexical structure of the jvm.cfg file is as follows: 2029 * 2030 * jvmcfg := { vmLine } 2031 * vmLine := knownLine 2032 * | aliasLine 2033 * | warnLine 2034 * | ignoreLine 2035 * | errorLine 2036 * | predicateLine 2037 * | commentLine 2038 * knownLine := flag "KNOWN" EOL 2039 * warnLine := flag "WARN" EOL 2040 * ignoreLine := flag "IGNORE" EOL 2041 * errorLine := flag "ERROR" EOL 2042 * aliasLine := flag "ALIASED_TO" flag EOL 2043 * predicateLine := flag "IF_SERVER_CLASS" flag EOL 2044 * commentLine := "#" text EOL 2045 * flag := "-" identifier 2046 * 2047 * The semantics are that when someone specifies a flag on the command line: 2048 * - if the flag appears on a knownLine, then the identifier is used as 2049 * the name of the directory holding the JVM library (the name of the JVM). 2050 * - if the flag appears as the first flag on an aliasLine, the identifier 2051 * of the second flag is used as the name of the JVM. 2052 * - if the flag appears on a warnLine, the identifier is used as the 2053 * name of the JVM, but a warning is generated. 2054 * - if the flag appears on an ignoreLine, the identifier is recognized as the 2055 * name of a JVM, but the identifier is ignored and the default vm used 2056 * - if the flag appears on an errorLine, an error is generated. 2057 * - if the flag appears as the first flag on a predicateLine, and 2058 * the machine on which you are running passes the predicate indicated, 2059 * then the identifier of the second flag is used as the name of the JVM, 2060 * otherwise the identifier of the first flag is used as the name of the JVM. 2061 * If no flag is given on the command line, the first vmLine of the jvm.cfg 2062 * file determines the name of the JVM. 2063 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file, 2064 * since they only make sense if someone hasn't specified the name of the 2065 * JVM on the command line. 2066 * 2067 * The intent of the jvm.cfg file is to allow several JVM libraries to 2068 * be installed in different subdirectories of a single JRE installation, 2069 * for space-savings and convenience in testing. 2070 * The intent is explicitly not to provide a full aliasing or predicate 2071 * mechanism. 2072 */ 2073 jint 2074 ReadKnownVMs(const char *jvmCfgName, jboolean speculative) 2075 { 2076 FILE *jvmCfg; 2077 char line[MAXPATHLEN+20]; 2078 int cnt = 0; 2079 int lineno = 0; 2080 jlong start, end; 2081 int vmType; 2082 char *tmpPtr; 2083 char *altVMName = NULL; 2084 char *serverClassVMName = NULL; 2085 static char *whiteSpace = " \t"; 2086 if (JLI_IsTraceLauncher()) { 2087 start = CounterGet(); 2088 } 2089 2090 jvmCfg = fopen(jvmCfgName, "r"); 2091 if (jvmCfg == NULL) { 2092 if (!speculative) { 2093 JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName); 2094 exit(1); 2095 } else { 2096 return -1; 2097 } 2098 } 2099 while (fgets(line, sizeof(line), jvmCfg) != NULL) { 2100 vmType = VM_UNKNOWN; 2101 lineno++; 2102 if (line[0] == '#') 2103 continue; 2104 if (line[0] != '-') { 2105 JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName); 2106 } 2107 if (cnt >= knownVMsLimit) { 2108 GrowKnownVMs(cnt); 2109 } 2110 line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */ 2111 tmpPtr = line + JLI_StrCSpn(line, whiteSpace); 2112 if (*tmpPtr == 0) { 2113 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2114 } else { 2115 /* Null-terminate this string for JLI_StringDup below */ 2116 *tmpPtr++ = 0; 2117 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace); 2118 if (*tmpPtr == 0) { 2119 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2120 } else { 2121 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) { 2122 vmType = VM_KNOWN; 2123 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) { 2124 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace); 2125 if (*tmpPtr != 0) { 2126 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace); 2127 } 2128 if (*tmpPtr == 0) { 2129 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2130 } else { 2131 /* Null terminate altVMName */ 2132 altVMName = tmpPtr; 2133 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace); 2134 *tmpPtr = 0; 2135 vmType = VM_ALIASED_TO; 2136 } 2137 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) { 2138 vmType = VM_WARN; 2139 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) { 2140 vmType = VM_IGNORE; 2141 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) { 2142 vmType = VM_ERROR; 2143 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) { 2144 /* ignored */ 2145 } else { 2146 JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]); 2147 vmType = VM_KNOWN; 2148 } 2149 } 2150 } 2151 2152 JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line); 2153 if (vmType != VM_UNKNOWN) { 2154 knownVMs[cnt].name = JLI_StringDup(line); 2155 knownVMs[cnt].flag = vmType; 2156 switch (vmType) { 2157 default: 2158 break; 2159 case VM_ALIASED_TO: 2160 knownVMs[cnt].alias = JLI_StringDup(altVMName); 2161 JLI_TraceLauncher(" name: %s vmType: %s alias: %s\n", 2162 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias); 2163 break; 2164 } 2165 cnt++; 2166 } 2167 } 2168 fclose(jvmCfg); 2169 knownVMsCount = cnt; 2170 2171 if (JLI_IsTraceLauncher()) { 2172 end = CounterGet(); 2173 printf("%ld micro seconds to parse jvm.cfg\n", 2174 (long)(jint)Counter2Micros(end-start)); 2175 } 2176 2177 return cnt; 2178 } 2179 2180 2181 static void 2182 GrowKnownVMs(int minimum) 2183 { 2184 struct vmdesc* newKnownVMs; 2185 int newMax; 2186 2187 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit)); 2188 if (newMax <= minimum) { 2189 newMax = minimum; 2190 } 2191 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc)); 2192 if (knownVMs != NULL) { 2193 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc)); 2194 } 2195 JLI_MemFree(knownVMs); 2196 knownVMs = newKnownVMs; 2197 knownVMsLimit = newMax; 2198 } 2199 2200 2201 /* Returns index of VM or -1 if not found */ 2202 static int 2203 KnownVMIndex(const char* name) 2204 { 2205 int i; 2206 if (JLI_StrCCmp(name, "-J") == 0) name += 2; 2207 for (i = 0; i < knownVMsCount; i++) { 2208 if (!JLI_StrCmp(name, knownVMs[i].name)) { 2209 return i; 2210 } 2211 } 2212 return -1; 2213 } 2214 2215 static void 2216 FreeKnownVMs() 2217 { 2218 int i; 2219 for (i = 0; i < knownVMsCount; i++) { 2220 JLI_MemFree(knownVMs[i].name); 2221 knownVMs[i].name = NULL; 2222 } 2223 JLI_MemFree(knownVMs); 2224 } 2225 2226 /* 2227 * Displays the splash screen according to the jar file name 2228 * and image file names stored in environment variables 2229 */ 2230 void 2231 ShowSplashScreen() 2232 { 2233 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY); 2234 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY); 2235 int data_size; 2236 void *image_data = NULL; 2237 float scale_factor = 1; 2238 char *scaled_splash_name = NULL; 2239 jboolean isImageScaled = JNI_FALSE; 2240 size_t maxScaledImgNameLength = 0; 2241 if (file_name == NULL){ 2242 return; 2243 } 2244 maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name); 2245 2246 scaled_splash_name = JLI_MemAlloc( 2247 maxScaledImgNameLength * sizeof(char)); 2248 isImageScaled = DoSplashGetScaledImageName(jar_name, file_name, 2249 &scale_factor, 2250 scaled_splash_name, maxScaledImgNameLength); 2251 if (jar_name) { 2252 2253 if (isImageScaled) { 2254 image_data = JLI_JarUnpackFile( 2255 jar_name, scaled_splash_name, &data_size); 2256 } 2257 2258 if (!image_data) { 2259 scale_factor = 1; 2260 image_data = JLI_JarUnpackFile( 2261 jar_name, file_name, &data_size); 2262 } 2263 if (image_data) { 2264 DoSplashInit(); 2265 DoSplashSetScaleFactor(scale_factor); 2266 DoSplashLoadMemory(image_data, data_size); 2267 JLI_MemFree(image_data); 2268 } 2269 } else { 2270 DoSplashInit(); 2271 if (isImageScaled) { 2272 DoSplashSetScaleFactor(scale_factor); 2273 DoSplashLoadFile(scaled_splash_name); 2274 } else { 2275 DoSplashLoadFile(file_name); 2276 } 2277 } 2278 JLI_MemFree(scaled_splash_name); 2279 2280 DoSplashSetFileJarName(file_name, jar_name); 2281 2282 /* 2283 * Done with all command line processing and potential re-execs so 2284 * clean up the environment. 2285 */ 2286 (void)UnsetEnv(ENV_ENTRY); 2287 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY); 2288 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY); 2289 2290 JLI_MemFree(splash_jar_entry); 2291 JLI_MemFree(splash_file_entry); 2292 2293 } 2294 2295 const char* 2296 GetFullVersion() 2297 { 2298 return _fVersion; 2299 } 2300 2301 const char* 2302 GetProgramName() 2303 { 2304 return _program_name; 2305 } 2306 2307 const char* 2308 GetLauncherName() 2309 { 2310 return _launcher_name; 2311 } 2312 2313 jboolean 2314 IsJavaArgs() 2315 { 2316 return _is_java_args; 2317 } 2318 2319 static jboolean 2320 IsWildCardEnabled() 2321 { 2322 return _wc_enabled; 2323 } 2324 2325 int 2326 ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize, 2327 int argc, char **argv, 2328 int mode, char *what, int ret) 2329 { 2330 2331 /* 2332 * If user doesn't specify stack size, check if VM has a preference. 2333 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will 2334 * return its default stack size through the init args structure. 2335 */ 2336 if (threadStackSize == 0) { 2337 struct JDK1_1InitArgs args1_1; 2338 memset((void*)&args1_1, 0, sizeof(args1_1)); 2339 args1_1.version = JNI_VERSION_1_1; 2340 ifn->GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */ 2341 if (args1_1.javaStackSize > 0) { 2342 threadStackSize = args1_1.javaStackSize; 2343 } else { 2344 /* 2345 * pthread_create would use system default stack size, e.g., 2346 * ulimit -s shows: 2347 * stack size (kbytes, -s) 8192 2348 */ 2349 } 2350 } 2351 2352 { /* Create a new thread to create JVM and invoke main method */ 2353 JavaMainArgs args; 2354 int rslt; 2355 2356 args.argc = argc; 2357 args.argv = argv; 2358 args.mode = mode; 2359 args.what = what; 2360 args.ifn = *ifn; 2361 2362 rslt = CallJavaMainInNewThread(threadStackSize, (void*)&args); 2363 /* If the caller has deemed there is an error we 2364 * simply return that, otherwise we return the value of 2365 * the callee 2366 */ 2367 return (ret != 0) ? ret : rslt; 2368 } 2369 } 2370 2371 static void 2372 DumpState() 2373 { 2374 if (!JLI_IsTraceLauncher()) return ; 2375 printf("Launcher state:\n"); 2376 printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex()); 2377 printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off"); 2378 printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off"); 2379 printf("\tprogram name:%s\n", GetProgramName()); 2380 printf("\tlauncher name:%s\n", GetLauncherName()); 2381 printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off"); 2382 printf("\tfullversion:%s\n", GetFullVersion()); 2383 } 2384 2385 /* 2386 * A utility procedure to always print to stderr 2387 */ 2388 JNIEXPORT void JNICALL 2389 JLI_ReportMessage(const char* fmt, ...) 2390 { 2391 va_list vl; 2392 va_start(vl, fmt); 2393 vfprintf(stderr, fmt, vl); 2394 fprintf(stderr, "\n"); 2395 va_end(vl); 2396 } 2397 2398 /* 2399 * A utility procedure to always print to stdout 2400 */ 2401 void 2402 JLI_ShowMessage(const char* fmt, ...) 2403 { 2404 va_list vl; 2405 va_start(vl, fmt); 2406 vfprintf(stdout, fmt, vl); 2407 fprintf(stdout, "\n"); 2408 va_end(vl); 2409 }