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annotate src/os/posix/launcher/java_md.c @ 4655:0c392b1bd7cc
Visualizer nbproject changes.
| author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
|---|---|
| date | Mon, 20 Feb 2012 17:58:46 +0100 |
| parents | f08d439fab8c |
| children | e8a4934564b2 |
| rev | line source |
|---|---|
| 1985 | 1 /* |
| 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 | |
| 26 #include "java.h" | |
| 27 #include <dirent.h> | |
| 28 #include <dlfcn.h> | |
| 29 #include <fcntl.h> | |
| 30 #include <inttypes.h> | |
| 31 #include <stdio.h> | |
| 32 #include <string.h> | |
| 33 #include <stdlib.h> | |
| 34 #include <limits.h> | |
| 35 #include <sys/stat.h> | |
| 36 #include <unistd.h> | |
| 37 #include <sys/types.h> | |
| 38 | |
| 39 #ifndef GAMMA | |
| 40 #include "manifest_info.h" | |
| 41 #include "version_comp.h" | |
| 42 #endif | |
| 43 | |
| 3960 | 44 #if defined(__linux__) || defined(_ALLBSD_SOURCE) |
| 1985 | 45 #include <pthread.h> |
| 46 #else | |
| 47 #include <thread.h> | |
| 48 #endif | |
| 49 | |
| 3960 | 50 #ifdef __APPLE__ |
| 51 #define JVM_DLL "libjvm.dylib" | |
| 52 #define JAVA_DLL "libjava.dylib" | |
| 53 #define LD_LIBRARY_PATH "DYLD_LIBRARY_PATH" | |
| 54 #else | |
| 1985 | 55 #define JVM_DLL "libjvm.so" |
| 56 #define JAVA_DLL "libjava.so" | |
| 3960 | 57 #define LD_LIBRARY_PATH "LD_LIBRARY_PATH" |
| 58 #endif | |
| 1985 | 59 |
| 60 #ifndef GAMMA /* launcher.make defines ARCH */ | |
| 61 /* | |
| 62 * If a processor / os combination has the ability to run binaries of | |
| 63 * two data models and cohabitation of jre/jdk bits with both data | |
| 64 * models is supported, then DUAL_MODE is defined. When DUAL_MODE is | |
| 65 * defined, the architecture names for the narrow and wide version of | |
| 66 * the architecture are defined in LIBARCH64NAME and LIBARCH32NAME. Currently | |
| 67 * only Solaris on sparc/sparcv9 and i586/amd64 is DUAL_MODE; linux | |
| 68 * i586/amd64 could be defined as DUAL_MODE but that is not the | |
| 69 * current policy. | |
| 70 */ | |
| 71 | |
| 72 #ifndef LIBARCHNAME | |
| 73 # error "The macro LIBARCHNAME was not defined on the compile line" | |
| 74 #endif | |
| 75 | |
| 76 #ifdef __sun | |
| 77 # define DUAL_MODE | |
| 78 # ifndef LIBARCH32NAME | |
| 79 # error "The macro LIBARCH32NAME was not defined on the compile line" | |
| 80 # endif | |
| 81 # ifndef LIBARCH64NAME | |
| 82 # error "The macro LIBARCH64NAME was not defined on the compile line" | |
| 83 # endif | |
| 84 # include <sys/systeminfo.h> | |
| 85 # include <sys/elf.h> | |
| 86 # include <stdio.h> | |
| 87 #endif | |
| 88 | |
| 89 #endif /* ifndef GAMMA */ | |
| 90 | |
| 91 /* pointer to environment */ | |
| 92 extern char **environ; | |
| 93 | |
| 94 #ifndef GAMMA | |
| 95 /* | |
| 96 * A collection of useful strings. One should think of these as #define | |
| 97 * entries, but actual strings can be more efficient (with many compilers). | |
| 98 */ | |
| 99 #ifdef __linux__ | |
| 100 static const char *system_dir = "/usr/java"; | |
| 101 static const char *user_dir = "/java"; | |
| 102 #else /* Solaris */ | |
| 103 static const char *system_dir = "/usr/jdk"; | |
| 104 static const char *user_dir = "/jdk"; | |
| 105 #endif | |
| 106 | |
| 107 #endif /* ifndef GAMMA */ | |
| 108 | |
| 109 /* | |
| 110 * Flowchart of launcher execs and options processing on unix | |
| 111 * | |
| 112 * The selection of the proper vm shared library to open depends on | |
| 113 * several classes of command line options, including vm "flavor" | |
| 114 * options (-client, -server) and the data model options, -d32 and | |
| 115 * -d64, as well as a version specification which may have come from | |
| 116 * the command line or from the manifest of an executable jar file. | |
| 117 * The vm selection options are not passed to the running | |
| 118 * virtual machine; they must be screened out by the launcher. | |
| 119 * | |
| 120 * The version specification (if any) is processed first by the | |
| 121 * platform independent routine SelectVersion. This may result in | |
| 122 * the exec of the specified launcher version. | |
| 123 * | |
| 124 * Typically, the launcher execs at least once to ensure a suitable | |
| 125 * LD_LIBRARY_PATH is in effect for the process. The first exec | |
| 126 * screens out all the data model options; leaving the choice of data | |
| 127 * model implicit in the binary selected to run. However, in case no | |
| 128 * exec is done, the data model options are screened out before the vm | |
| 129 * is invoked. | |
| 130 * | |
| 131 * incoming argv ------------------------------ | |
| 132 * | | | |
| 133 * \|/ | | |
| 134 * CheckJVMType | | |
| 135 * (removes -client, -server, etc.) | | |
| 136 * \|/ | |
| 137 * CreateExecutionEnvironment | |
| 138 * (removes -d32 and -d64, | |
| 139 * determines desired data model, | |
| 140 * sets up LD_LIBRARY_PATH, | |
| 141 * and exec's) | |
| 142 * | | |
| 143 * -------------------------------------------- | |
| 144 * | | |
| 145 * \|/ | |
| 146 * exec child 1 incoming argv ----------------- | |
| 147 * | | | |
| 148 * \|/ | | |
| 149 * CheckJVMType | | |
| 150 * (removes -client, -server, etc.) | | |
| 151 * | \|/ | |
| 152 * | CreateExecutionEnvironment | |
| 153 * | (verifies desired data model | |
| 154 * | is running and acceptable | |
| 155 * | LD_LIBRARY_PATH; | |
| 156 * | no-op in child) | |
| 157 * | | |
| 158 * \|/ | |
| 159 * TranslateDashJArgs... | |
| 160 * (Prepare to pass args to vm) | |
| 161 * | | |
| 162 * | | |
| 163 * | | |
| 164 * \|/ | |
| 165 * ParseArguments | |
| 166 * (ignores -d32 and -d64, | |
| 167 * processes version options, | |
| 168 * creates argument list for vm, | |
| 169 * etc.) | |
| 170 * | |
| 171 */ | |
| 172 | |
| 173 static char *SetExecname(char **argv); | |
| 174 static char * GetExecname(); | |
| 175 static jboolean GetJVMPath(const char *jrepath, const char *jvmtype, | |
| 176 char *jvmpath, jint jvmpathsize, char * arch); | |
| 177 static jboolean GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative); | |
| 178 | |
| 179 #ifndef GAMMA | |
| 180 const char * | |
| 181 GetArch() | |
| 182 { | |
| 183 return LIBARCHNAME; | |
| 184 } | |
| 185 #endif /* ifndef GAMMA */ | |
| 186 | |
| 187 void | |
| 188 CreateExecutionEnvironment(int *_argcp, | |
| 189 char ***_argvp, | |
| 190 char jrepath[], | |
| 191 jint so_jrepath, | |
| 192 char jvmpath[], | |
| 193 jint so_jvmpath, | |
| 194 char **original_argv) { | |
| 195 /* | |
| 196 * First, determine if we are running the desired data model. If we | |
| 197 * are running the desired data model, all the error messages | |
| 198 * associated with calling GetJREPath, ReadKnownVMs, etc. should be | |
| 199 * output. However, if we are not running the desired data model, | |
| 200 * some of the errors should be suppressed since it is more | |
| 201 * informative to issue an error message based on whether or not the | |
| 202 * os/processor combination has dual mode capabilities. | |
| 203 */ | |
| 204 | |
| 205 char *execname = NULL; | |
| 206 int original_argc = *_argcp; | |
| 207 jboolean jvmpathExists; | |
| 208 | |
| 209 /* Compute the name of the executable */ | |
| 210 execname = SetExecname(*_argvp); | |
| 211 | |
| 212 #ifndef GAMMA | |
| 213 /* Set the LD_LIBRARY_PATH environment variable, check data model | |
| 214 flags, and exec process, if needed */ | |
| 215 { | |
| 216 char *arch = (char *)GetArch(); /* like sparc or sparcv9 */ | |
| 217 char * jvmtype = NULL; | |
| 218 int argc = *_argcp; | |
| 219 char **argv = original_argv; | |
| 220 | |
| 221 char *runpath = NULL; /* existing effective LD_LIBRARY_PATH | |
| 222 setting */ | |
| 223 | |
| 224 int running = /* What data model is being ILP32 => | |
| 225 32 bit vm; LP64 => 64 bit vm */ | |
| 226 #ifdef _LP64 | |
| 227 64; | |
| 228 #else | |
| 229 32; | |
| 230 #endif | |
| 231 | |
| 232 int wanted = running; /* What data mode is being | |
| 233 asked for? Current model is | |
| 234 fine unless another model | |
| 235 is asked for */ | |
| 236 | |
| 237 char* new_runpath = NULL; /* desired new LD_LIBRARY_PATH string */ | |
| 238 char* newpath = NULL; /* path on new LD_LIBRARY_PATH */ | |
| 239 char* lastslash = NULL; | |
| 240 | |
| 241 char** newenvp = NULL; /* current environment */ | |
| 242 | |
| 243 char** newargv = NULL; | |
| 244 int newargc = 0; | |
| 245 #ifdef __sun | |
| 246 char* dmpath = NULL; /* data model specific LD_LIBRARY_PATH, | |
| 247 Solaris only */ | |
| 248 #endif | |
| 249 | |
| 250 /* | |
| 251 * Starting in 1.5, all unix platforms accept the -d32 and -d64 | |
| 252 * options. On platforms where only one data-model is supported | |
| 253 * (e.g. ia-64 Linux), using the flag for the other data model is | |
| 254 * an error and will terminate the program. | |
| 255 */ | |
| 256 | |
| 257 { /* open new scope to declare local variables */ | |
| 258 int i; | |
| 259 | |
| 260 newargv = (char **)JLI_MemAlloc((argc+1) * sizeof(*newargv)); | |
| 261 newargv[newargc++] = argv[0]; | |
| 262 | |
| 263 /* scan for data model arguments and remove from argument list; | |
| 264 last occurrence determines desired data model */ | |
| 265 for (i=1; i < argc; i++) { | |
| 266 | |
| 267 if (strcmp(argv[i], "-J-d64") == 0 || strcmp(argv[i], "-d64") == 0) { | |
| 268 wanted = 64; | |
| 269 continue; | |
| 270 } | |
| 271 if (strcmp(argv[i], "-J-d32") == 0 || strcmp(argv[i], "-d32") == 0) { | |
| 272 wanted = 32; | |
| 273 continue; | |
| 274 } | |
| 275 newargv[newargc++] = argv[i]; | |
| 276 | |
| 277 #ifdef JAVA_ARGS | |
| 278 if (argv[i][0] != '-') | |
| 279 continue; | |
| 280 #else | |
| 281 if (strcmp(argv[i], "-classpath") == 0 || strcmp(argv[i], "-cp") == 0) { | |
| 282 i++; | |
| 283 if (i >= argc) break; | |
| 284 newargv[newargc++] = argv[i]; | |
| 285 continue; | |
| 286 } | |
| 287 if (argv[i][0] != '-') { i++; break; } | |
| 288 #endif | |
| 289 } | |
| 290 | |
| 291 /* copy rest of args [i .. argc) */ | |
| 292 while (i < argc) { | |
| 293 newargv[newargc++] = argv[i++]; | |
| 294 } | |
| 295 newargv[newargc] = NULL; | |
| 296 | |
| 297 /* | |
| 298 * newargv has all proper arguments here | |
| 299 */ | |
| 300 | |
| 301 argc = newargc; | |
| 302 argv = newargv; | |
| 303 } | |
| 304 | |
| 305 /* If the data model is not changing, it is an error if the | |
| 306 jvmpath does not exist */ | |
| 307 if (wanted == running) { | |
| 308 /* Find out where the JRE is that we will be using. */ | |
| 309 if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) { | |
| 310 fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n"); | |
| 311 exit(2); | |
| 312 } | |
| 313 | |
| 314 /* Find the specified JVM type */ | |
| 315 if (ReadKnownVMs(jrepath, arch, JNI_FALSE) < 1) { | |
| 316 fprintf(stderr, "Error: no known VMs. (check for corrupt jvm.cfg file)\n"); | |
| 317 exit(1); | |
| 318 } | |
| 319 | |
| 320 jvmpath[0] = '\0'; | |
| 321 jvmtype = CheckJvmType(_argcp, _argvp, JNI_FALSE); | |
| 322 | |
| 323 if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, arch )) { | |
| 324 fprintf(stderr, "Error: no `%s' JVM at `%s'.\n", jvmtype, jvmpath); | |
| 325 exit(4); | |
| 326 } | |
| 327 } else { /* do the same speculatively or exit */ | |
| 328 #ifdef DUAL_MODE | |
| 329 if (running != wanted) { | |
| 330 /* Find out where the JRE is that we will be using. */ | |
| 331 if (!GetJREPath(jrepath, so_jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), JNI_TRUE)) { | |
| 332 goto EndDataModelSpeculate; | |
| 333 } | |
| 334 | |
| 335 /* | |
| 336 * Read in jvm.cfg for target data model and process vm | |
| 337 * selection options. | |
| 338 */ | |
| 339 if (ReadKnownVMs(jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), JNI_TRUE) < 1) { | |
| 340 goto EndDataModelSpeculate; | |
| 341 } | |
| 342 jvmpath[0] = '\0'; | |
| 343 jvmtype = CheckJvmType(_argcp, _argvp, JNI_TRUE); | |
| 344 /* exec child can do error checking on the existence of the path */ | |
| 345 jvmpathExists = GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, | |
| 346 ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME)); | |
| 347 | |
| 348 } | |
| 349 EndDataModelSpeculate: /* give up and let other code report error message */ | |
| 350 ; | |
| 351 #else | |
| 352 fprintf(stderr, "Running a %d-bit JVM is not supported on this platform.\n", wanted); | |
| 353 exit(1); | |
| 354 #endif | |
| 355 } | |
| 356 | |
| 357 /* | |
| 358 * We will set the LD_LIBRARY_PATH as follows: | |
| 359 * | |
| 360 * o $JVMPATH (directory portion only) | |
| 361 * o $JRE/lib/$LIBARCHNAME | |
| 362 * o $JRE/../lib/$LIBARCHNAME | |
| 363 * | |
| 364 * followed by the user's previous effective LD_LIBRARY_PATH, if | |
| 365 * any. | |
| 366 */ | |
| 367 | |
| 368 #ifdef __sun | |
| 369 /* | |
| 370 * Starting in Solaris 7, ld.so.1 supports three LD_LIBRARY_PATH | |
| 371 * variables: | |
| 372 * | |
| 373 * 1. LD_LIBRARY_PATH -- used for 32 and 64 bit searches if | |
| 374 * data-model specific variables are not set. | |
| 375 * | |
| 376 * 2. LD_LIBRARY_PATH_64 -- overrides and replaces LD_LIBRARY_PATH | |
| 377 * for 64-bit binaries. | |
| 378 * | |
| 379 * 3. LD_LIBRARY_PATH_32 -- overrides and replaces LD_LIBRARY_PATH | |
| 380 * for 32-bit binaries. | |
| 381 * | |
| 382 * The vm uses LD_LIBRARY_PATH to set the java.library.path system | |
| 383 * property. To shield the vm from the complication of multiple | |
| 384 * LD_LIBRARY_PATH variables, if the appropriate data model | |
| 385 * specific variable is set, we will act as if LD_LIBRARY_PATH had | |
| 386 * the value of the data model specific variant and the data model | |
| 387 * specific variant will be unset. Note that the variable for the | |
| 388 * *wanted* data model must be used (if it is set), not simply the | |
| 389 * current running data model. | |
| 390 */ | |
| 391 | |
| 392 switch(wanted) { | |
| 393 case 0: | |
| 394 if(running == 32) { | |
| 395 dmpath = getenv("LD_LIBRARY_PATH_32"); | |
| 396 wanted = 32; | |
| 397 } | |
| 398 else { | |
| 399 dmpath = getenv("LD_LIBRARY_PATH_64"); | |
| 400 wanted = 64; | |
| 401 } | |
| 402 break; | |
| 403 | |
| 404 case 32: | |
| 405 dmpath = getenv("LD_LIBRARY_PATH_32"); | |
| 406 break; | |
| 407 | |
| 408 case 64: | |
| 409 dmpath = getenv("LD_LIBRARY_PATH_64"); | |
| 410 break; | |
| 411 | |
| 412 default: | |
| 413 fprintf(stderr, "Improper value at line %d.", __LINE__); | |
| 414 exit(1); /* unknown value in wanted */ | |
| 415 break; | |
| 416 } | |
| 417 | |
| 418 /* | |
| 419 * If dmpath is NULL, the relevant data model specific variable is | |
| 420 * not set and normal LD_LIBRARY_PATH should be used. | |
| 421 */ | |
| 422 if( dmpath == NULL) { | |
| 423 runpath = getenv("LD_LIBRARY_PATH"); | |
| 424 } | |
| 425 else { | |
| 426 runpath = dmpath; | |
| 427 } | |
| 428 #else | |
| 429 /* | |
| 430 * If not on Solaris, assume only a single LD_LIBRARY_PATH | |
| 431 * variable. | |
| 432 */ | |
| 3960 | 433 runpath = getenv(LD_LIBRARY_PATH); |
| 1985 | 434 #endif /* __sun */ |
| 435 | |
| 3960 | 436 #if defined(__linux__) |
| 1985 | 437 /* |
| 438 * On linux, if a binary is running as sgid or suid, glibc sets | |
| 439 * LD_LIBRARY_PATH to the empty string for security purposes. (In | |
| 440 * contrast, on Solaris the LD_LIBRARY_PATH variable for a | |
| 441 * privileged binary does not lose its settings; but the dynamic | |
| 442 * linker does apply more scrutiny to the path.) The launcher uses | |
| 443 * the value of LD_LIBRARY_PATH to prevent an exec loop. | |
| 444 * Therefore, if we are running sgid or suid, this function's | |
| 445 * setting of LD_LIBRARY_PATH will be ineffective and we should | |
| 446 * return from the function now. Getting the right libraries to | |
| 447 * be found must be handled through other mechanisms. | |
| 448 */ | |
| 449 if((getgid() != getegid()) || (getuid() != geteuid()) ) { | |
| 450 return; | |
| 451 } | |
| 3960 | 452 #elif defined(_ALLBSD_SOURCE) |
| 453 /* | |
| 454 * On BSD, if a binary is running as sgid or suid, libc sets | |
| 455 * LD_LIBRARY_PATH to the empty string for security purposes. (In | |
| 456 * contrast, on Solaris the LD_LIBRARY_PATH variable for a | |
| 457 * privileged binary does not lose its settings; but the dynamic | |
| 458 * linker does apply more scrutiny to the path.) The launcher uses | |
| 459 * the value of LD_LIBRARY_PATH to prevent an exec loop. | |
| 460 * Therefore, if we are running sgid or suid, this function's | |
| 461 * setting of LD_LIBRARY_PATH will be ineffective and we should | |
| 462 * return from the function now. Getting the right libraries to | |
| 463 * be found must be handled through other mechanisms. | |
| 464 */ | |
| 465 if(issetugid()) { | |
| 466 return; | |
| 467 } | |
| 1985 | 468 #endif |
| 469 | |
| 470 /* runpath contains current effective LD_LIBRARY_PATH setting */ | |
| 471 | |
| 472 jvmpath = JLI_StringDup(jvmpath); | |
| 473 new_runpath = JLI_MemAlloc( ((runpath!=NULL)?strlen(runpath):0) + | |
| 474 2*strlen(jrepath) + 2*strlen(arch) + | |
| 475 strlen(jvmpath) + 52); | |
| 3960 | 476 newpath = new_runpath + strlen(LD_LIBRARY_PATH "="); |
| 1985 | 477 |
| 478 | |
| 479 /* | |
| 480 * Create desired LD_LIBRARY_PATH value for target data model. | |
| 481 */ | |
| 482 { | |
| 483 /* remove the name of the .so from the JVM path */ | |
| 484 lastslash = strrchr(jvmpath, '/'); | |
| 485 if (lastslash) | |
| 486 *lastslash = '\0'; | |
| 487 | |
| 488 | |
| 489 /* jvmpath, ((running != wanted)?((wanted==64)?"/"LIBARCH64NAME:"/.."):""), */ | |
| 490 | |
| 3960 | 491 sprintf(new_runpath, LD_LIBRARY_PATH "=" |
| 1985 | 492 "%s:" |
| 493 "%s/lib/%s:" | |
| 494 "%s/../lib/%s", | |
| 495 jvmpath, | |
| 496 #ifdef DUAL_MODE | |
| 497 jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), | |
| 498 jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME) | |
| 499 #else | |
| 500 jrepath, arch, | |
| 501 jrepath, arch | |
| 502 #endif | |
| 503 ); | |
| 504 | |
| 505 | |
| 506 /* | |
| 507 * Check to make sure that the prefix of the current path is the | |
| 508 * desired environment variable setting. | |
| 509 */ | |
| 510 if (runpath != NULL && | |
| 511 strncmp(newpath, runpath, strlen(newpath))==0 && | |
| 512 (runpath[strlen(newpath)] == 0 || runpath[strlen(newpath)] == ':') && | |
| 513 (running == wanted) /* data model does not have to be changed */ | |
| 514 #ifdef __sun | |
| 515 && (dmpath == NULL) /* data model specific variables not set */ | |
| 516 #endif | |
| 517 ) { | |
| 518 | |
| 519 return; | |
| 520 | |
| 521 } | |
| 522 } | |
| 523 | |
| 524 /* | |
| 525 * Place the desired environment setting onto the prefix of | |
| 526 * LD_LIBRARY_PATH. Note that this prevents any possible infinite | |
| 527 * loop of execv() because we test for the prefix, above. | |
| 528 */ | |
| 529 if (runpath != 0) { | |
| 530 strcat(new_runpath, ":"); | |
| 531 strcat(new_runpath, runpath); | |
| 532 } | |
| 533 | |
| 534 if( putenv(new_runpath) != 0) { | |
| 535 exit(1); /* problem allocating memory; LD_LIBRARY_PATH not set | |
| 536 properly */ | |
| 537 } | |
| 538 | |
| 539 /* | |
| 540 * Unix systems document that they look at LD_LIBRARY_PATH only | |
| 541 * once at startup, so we have to re-exec the current executable | |
| 542 * to get the changed environment variable to have an effect. | |
| 543 */ | |
| 544 | |
| 545 #ifdef __sun | |
| 546 /* | |
| 547 * If dmpath is not NULL, remove the data model specific string | |
| 548 * in the environment for the exec'ed child. | |
| 549 */ | |
| 550 | |
| 551 if( dmpath != NULL) | |
| 552 (void)UnsetEnv((wanted==32)?"LD_LIBRARY_PATH_32":"LD_LIBRARY_PATH_64"); | |
| 553 #endif | |
| 554 | |
| 555 newenvp = environ; | |
| 556 | |
| 557 { | |
| 558 char *newexec = execname; | |
| 559 #ifdef DUAL_MODE | |
| 560 /* | |
| 561 * If the data model is being changed, the path to the | |
| 562 * executable must be updated accordingly; the executable name | |
| 563 * and directory the executable resides in are separate. In the | |
| 564 * case of 32 => 64, the new bits are assumed to reside in, e.g. | |
| 565 * "olddir/LIBARCH64NAME/execname"; in the case of 64 => 32, | |
| 566 * the bits are assumed to be in "olddir/../execname". For example, | |
| 567 * | |
| 568 * olddir/sparcv9/execname | |
| 569 * olddir/amd64/execname | |
| 570 * | |
| 571 * for Solaris SPARC and Linux amd64, respectively. | |
| 572 */ | |
| 573 | |
| 574 if (running != wanted) { | |
| 575 char *oldexec = strcpy(JLI_MemAlloc(strlen(execname) + 1), execname); | |
| 576 char *olddir = oldexec; | |
| 577 char *oldbase = strrchr(oldexec, '/'); | |
| 578 | |
| 579 | |
| 580 newexec = JLI_MemAlloc(strlen(execname) + 20); | |
| 581 *oldbase++ = 0; | |
| 582 sprintf(newexec, "%s/%s/%s", olddir, | |
| 583 ((wanted==64) ? LIBARCH64NAME : ".."), oldbase); | |
| 584 argv[0] = newexec; | |
| 585 } | |
| 586 #endif | |
| 587 | |
| 588 (void)fflush(stdout); | |
| 589 (void)fflush(stderr); | |
| 590 execve(newexec, argv, newenvp); | |
| 591 perror("execve()"); | |
| 592 | |
| 593 fprintf(stderr, "Error trying to exec %s.\n", newexec); | |
| 594 fprintf(stderr, "Check if file exists and permissions are set correctly.\n"); | |
| 595 | |
| 596 #ifdef DUAL_MODE | |
| 597 if (running != wanted) { | |
| 598 fprintf(stderr, "Failed to start a %d-bit JVM process from a %d-bit JVM.\n", | |
| 599 wanted, running); | |
| 600 # ifdef __sun | |
| 601 | |
| 602 # ifdef __sparc | |
| 603 fprintf(stderr, "Verify all necessary J2SE components have been installed.\n" ); | |
| 604 fprintf(stderr, | |
| 605 "(Solaris SPARC 64-bit components must be installed after 32-bit components.)\n" ); | |
| 606 # else | |
| 607 fprintf(stderr, "Either 64-bit processes are not supported by this platform\n"); | |
| 608 fprintf(stderr, "or the 64-bit components have not been installed.\n"); | |
| 609 # endif | |
| 610 } | |
| 611 # endif | |
| 612 #endif | |
| 613 | |
| 614 } | |
| 615 | |
| 616 exit(1); | |
| 617 } | |
| 618 | |
| 619 #else /* ifndef GAMMA */ | |
| 620 | |
| 621 /* | |
| 622 * gamma launcher is simpler in that it doesn't handle VM flavors, data | |
| 623 * model, LD_LIBRARY_PATH, etc. Assuming everything is set-up correctly | |
| 624 * all we need to do here is to return correct path names. See also | |
| 625 * GetJVMPath() and GetApplicationHome(). | |
| 626 */ | |
| 627 | |
| 628 { char *arch = (char *) ARCH; /* like sparc or sparcv9 */ | |
| 629 char *p; | |
| 630 | |
| 631 if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) { | |
| 632 fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n"); | |
| 633 exit(2); | |
| 634 } | |
| 635 | |
| 636 if (!GetJVMPath(jrepath, NULL, jvmpath, so_jvmpath, arch )) { | |
| 637 fprintf(stderr, "Error: no JVM at `%s'.\n", jvmpath); | |
| 638 exit(4); | |
| 639 } | |
| 640 } | |
| 641 | |
| 642 #endif /* ifndef GAMMA */ | |
| 643 } | |
| 644 | |
| 645 | |
| 646 /* | |
| 647 * On Solaris VM choosing is done by the launcher (java.c). | |
| 648 */ | |
| 649 static jboolean | |
| 650 GetJVMPath(const char *jrepath, const char *jvmtype, | |
| 651 char *jvmpath, jint jvmpathsize, char * arch) | |
| 652 { | |
| 653 struct stat s; | |
| 654 | |
| 655 #ifndef GAMMA | |
| 656 if (strchr(jvmtype, '/')) { | |
| 657 sprintf(jvmpath, "%s/" JVM_DLL, jvmtype); | |
| 658 } else { | |
| 659 sprintf(jvmpath, "%s/lib/%s/%s/" JVM_DLL, jrepath, arch, jvmtype); | |
| 660 } | |
| 661 #else | |
| 662 /* | |
| 663 * For gamma launcher, JVM is either built-in or in the same directory. | |
| 664 * Either way we return "<exe_path>/libjvm.so" where <exe_path> is the | |
| 665 * directory where gamma launcher is located. | |
| 666 */ | |
| 667 | |
| 668 char *p; | |
| 669 | |
| 670 snprintf(jvmpath, jvmpathsize, "%s", GetExecname()); | |
| 671 p = strrchr(jvmpath, '/'); | |
| 672 if (p) { | |
| 673 /* replace executable name with libjvm.so */ | |
| 674 snprintf(p + 1, jvmpathsize - (p + 1 - jvmpath), "%s", JVM_DLL); | |
| 675 } else { | |
| 676 /* this case shouldn't happen */ | |
| 677 snprintf(jvmpath, jvmpathsize, "%s", JVM_DLL); | |
| 678 } | |
| 679 #endif /* ifndef GAMMA */ | |
| 680 | |
| 681 if (_launcher_debug) | |
| 682 printf("Does `%s' exist ... ", jvmpath); | |
| 683 | |
| 684 if (stat(jvmpath, &s) == 0) { | |
| 685 if (_launcher_debug) | |
| 686 printf("yes.\n"); | |
| 687 return JNI_TRUE; | |
| 688 } else { | |
| 689 if (_launcher_debug) | |
| 690 printf("no.\n"); | |
| 691 return JNI_FALSE; | |
| 692 } | |
| 693 } | |
| 694 | |
| 695 /* | |
| 696 * Find path to JRE based on .exe's location or registry settings. | |
| 697 */ | |
| 698 static jboolean | |
| 699 GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative) | |
| 700 { | |
| 701 char libjava[MAXPATHLEN]; | |
| 702 | |
| 703 if (GetApplicationHome(path, pathsize)) { | |
| 704 /* Is JRE co-located with the application? */ | |
| 705 sprintf(libjava, "%s/lib/%s/" JAVA_DLL, path, arch); | |
| 706 if (access(libjava, F_OK) == 0) { | |
| 707 goto found; | |
| 708 } | |
| 709 | |
| 710 /* Does the app ship a private JRE in <apphome>/jre directory? */ | |
| 711 sprintf(libjava, "%s/jre/lib/%s/" JAVA_DLL, path, arch); | |
| 712 if (access(libjava, F_OK) == 0) { | |
| 713 strcat(path, "/jre"); | |
| 714 goto found; | |
| 715 } | |
| 716 } | |
| 717 | |
| 718 if (!speculative) | |
| 719 fprintf(stderr, "Error: could not find " JAVA_DLL "\n"); | |
| 720 return JNI_FALSE; | |
| 721 | |
| 722 found: | |
| 723 if (_launcher_debug) | |
| 724 printf("JRE path is %s\n", path); | |
| 725 return JNI_TRUE; | |
| 726 } | |
| 727 | |
| 728 jboolean | |
| 729 LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn) | |
| 730 { | |
| 731 #ifdef GAMMA | |
| 732 /* JVM is directly linked with gamma launcher; no dlopen() */ | |
| 733 ifn->CreateJavaVM = JNI_CreateJavaVM; | |
| 734 ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs; | |
| 735 return JNI_TRUE; | |
| 736 #else | |
| 737 Dl_info dlinfo; | |
| 738 void *libjvm; | |
| 739 | |
| 740 if (_launcher_debug) { | |
| 741 printf("JVM path is %s\n", jvmpath); | |
| 742 } | |
| 743 | |
| 744 libjvm = dlopen(jvmpath, RTLD_NOW + RTLD_GLOBAL); | |
| 745 if (libjvm == NULL) { | |
| 746 #if defined(__sparc) && !defined(_LP64) /* i.e. 32-bit sparc */ | |
| 747 FILE * fp; | |
| 748 Elf32_Ehdr elf_head; | |
| 749 int count; | |
| 750 int location; | |
| 751 | |
| 752 fp = fopen(jvmpath, "r"); | |
| 753 if(fp == NULL) | |
| 754 goto error; | |
| 755 | |
| 756 /* read in elf header */ | |
| 757 count = fread((void*)(&elf_head), sizeof(Elf32_Ehdr), 1, fp); | |
| 758 fclose(fp); | |
| 759 if(count < 1) | |
| 760 goto error; | |
| 761 | |
| 762 /* | |
| 763 * Check for running a server vm (compiled with -xarch=v8plus) | |
| 764 * on a stock v8 processor. In this case, the machine type in | |
| 765 * the elf header would not be included the architecture list | |
| 766 * provided by the isalist command, which is turn is gotten from | |
| 767 * sysinfo. This case cannot occur on 64-bit hardware and thus | |
| 768 * does not have to be checked for in binaries with an LP64 data | |
| 769 * model. | |
| 770 */ | |
| 771 if(elf_head.e_machine == EM_SPARC32PLUS) { | |
| 772 char buf[257]; /* recommended buffer size from sysinfo man | |
| 773 page */ | |
| 774 long length; | |
| 775 char* location; | |
| 776 | |
| 777 length = sysinfo(SI_ISALIST, buf, 257); | |
| 778 if(length > 0) { | |
| 779 location = strstr(buf, "sparcv8plus "); | |
| 780 if(location == NULL) { | |
| 781 fprintf(stderr, "SPARC V8 processor detected; Server compiler requires V9 or better.\n"); | |
| 782 fprintf(stderr, "Use Client compiler on V8 processors.\n"); | |
| 783 fprintf(stderr, "Could not create the Java virtual machine.\n"); | |
| 784 return JNI_FALSE; | |
| 785 } | |
| 786 } | |
| 787 } | |
| 788 #endif | |
| 789 fprintf(stderr, "dl failure on line %d", __LINE__); | |
| 790 goto error; | |
| 791 } | |
| 792 | |
| 793 ifn->CreateJavaVM = (CreateJavaVM_t) | |
| 794 dlsym(libjvm, "JNI_CreateJavaVM"); | |
| 795 if (ifn->CreateJavaVM == NULL) | |
| 796 goto error; | |
| 797 | |
| 798 ifn->GetDefaultJavaVMInitArgs = (GetDefaultJavaVMInitArgs_t) | |
| 799 dlsym(libjvm, "JNI_GetDefaultJavaVMInitArgs"); | |
| 800 if (ifn->GetDefaultJavaVMInitArgs == NULL) | |
| 801 goto error; | |
| 802 | |
| 803 return JNI_TRUE; | |
| 804 | |
| 805 error: | |
| 806 fprintf(stderr, "Error: failed %s, because %s\n", jvmpath, dlerror()); | |
| 807 return JNI_FALSE; | |
| 808 #endif /* ifndef GAMMA */ | |
| 809 } | |
| 810 | |
| 811 /* | |
| 812 * If app is "/foo/bin/javac", or "/foo/bin/sparcv9/javac" then put | |
| 813 * "/foo" into buf. | |
| 814 */ | |
| 815 jboolean | |
| 816 GetApplicationHome(char *buf, jint bufsize) | |
| 817 { | |
| 3960 | 818 #if defined(__linux__) || defined(_ALLBSD_SOURCE) |
| 1985 | 819 char *execname = GetExecname(); |
| 820 if (execname) { | |
| 821 strncpy(buf, execname, bufsize-1); | |
| 822 buf[bufsize-1] = '\0'; | |
| 823 } else { | |
| 824 return JNI_FALSE; | |
| 825 } | |
| 826 #else | |
| 827 Dl_info dlinfo; | |
| 828 | |
| 829 dladdr((void *)GetApplicationHome, &dlinfo); | |
| 830 if (realpath(dlinfo.dli_fname, buf) == NULL) { | |
| 831 fprintf(stderr, "Error: realpath(`%s') failed.\n", dlinfo.dli_fname); | |
| 832 return JNI_FALSE; | |
| 833 } | |
| 834 #endif | |
| 835 | |
| 836 #ifdef GAMMA | |
| 837 { | |
|
2027
aa6e219afbf1
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sla
parents:
1985
diff
changeset
|
838 /* gamma launcher uses JAVA_HOME environment variable to find JDK/JRE */ |
|
aa6e219afbf1
7006354: Updates to Visual Studio project creation and development launcher
sla
parents:
1985
diff
changeset
|
839 char* java_home_var = getenv("JAVA_HOME"); |
| 1985 | 840 if (java_home_var == NULL) { |
|
2027
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diff
changeset
|
841 printf("JAVA_HOME must point to a valid JDK/JRE to run gamma\n"); |
| 1985 | 842 return JNI_FALSE; |
| 843 } | |
| 844 snprintf(buf, bufsize, "%s", java_home_var); | |
| 845 } | |
| 846 #else | |
| 847 if (strrchr(buf, '/') == 0) { | |
| 848 buf[0] = '\0'; | |
| 849 return JNI_FALSE; | |
| 850 } | |
| 851 *(strrchr(buf, '/')) = '\0'; /* executable file */ | |
| 852 if (strlen(buf) < 4 || strrchr(buf, '/') == 0) { | |
| 853 buf[0] = '\0'; | |
| 854 return JNI_FALSE; | |
| 855 } | |
| 856 if (strcmp("/bin", buf + strlen(buf) - 4) != 0) | |
| 857 *(strrchr(buf, '/')) = '\0'; /* sparcv9 or amd64 */ | |
| 858 if (strlen(buf) < 4 || strcmp("/bin", buf + strlen(buf) - 4) != 0) { | |
| 859 buf[0] = '\0'; | |
| 860 return JNI_FALSE; | |
| 861 } | |
| 862 *(strrchr(buf, '/')) = '\0'; /* bin */ | |
| 863 #endif /* ifndef GAMMA */ | |
| 864 | |
| 865 return JNI_TRUE; | |
| 866 } | |
| 867 | |
| 868 | |
| 869 /* | |
| 870 * Return true if the named program exists | |
| 871 */ | |
| 872 static int | |
| 873 ProgramExists(char *name) | |
| 874 { | |
| 875 struct stat sb; | |
| 876 if (stat(name, &sb) != 0) return 0; | |
| 877 if (S_ISDIR(sb.st_mode)) return 0; | |
| 878 return (sb.st_mode & S_IEXEC) != 0; | |
| 879 } | |
| 880 | |
| 881 | |
| 882 /* | |
| 883 * Find a command in a directory, returning the path. | |
| 884 */ | |
| 885 static char * | |
| 886 Resolve(char *indir, char *cmd) | |
| 887 { | |
| 888 char name[PATH_MAX + 2], *real; | |
| 889 | |
| 890 if ((strlen(indir) + strlen(cmd) + 1) > PATH_MAX) return 0; | |
| 891 sprintf(name, "%s%c%s", indir, FILE_SEPARATOR, cmd); | |
| 892 if (!ProgramExists(name)) return 0; | |
| 893 real = JLI_MemAlloc(PATH_MAX + 2); | |
| 894 if (!realpath(name, real)) | |
| 895 strcpy(real, name); | |
| 896 return real; | |
| 897 } | |
| 898 | |
| 899 | |
| 900 /* | |
| 901 * Find a path for the executable | |
| 902 */ | |
| 903 static char * | |
| 904 FindExecName(char *program) | |
| 905 { | |
| 906 char cwdbuf[PATH_MAX+2]; | |
| 907 char *path; | |
| 908 char *tmp_path; | |
| 909 char *f; | |
| 910 char *result = NULL; | |
| 911 | |
| 912 /* absolute path? */ | |
| 913 if (*program == FILE_SEPARATOR || | |
| 914 (FILE_SEPARATOR=='\\' && strrchr(program, ':'))) | |
| 915 return Resolve("", program+1); | |
| 916 | |
| 917 /* relative path? */ | |
| 918 if (strrchr(program, FILE_SEPARATOR) != 0) { | |
| 919 char buf[PATH_MAX+2]; | |
| 920 return Resolve(getcwd(cwdbuf, sizeof(cwdbuf)), program); | |
| 921 } | |
| 922 | |
| 923 /* from search path? */ | |
| 924 path = getenv("PATH"); | |
| 925 if (!path || !*path) path = "."; | |
| 926 tmp_path = JLI_MemAlloc(strlen(path) + 2); | |
| 927 strcpy(tmp_path, path); | |
| 928 | |
| 929 for (f=tmp_path; *f && result==0; ) { | |
| 930 char *s = f; | |
| 931 while (*f && (*f != PATH_SEPARATOR)) ++f; | |
| 932 if (*f) *f++ = 0; | |
| 933 if (*s == FILE_SEPARATOR) | |
| 934 result = Resolve(s, program); | |
| 935 else { | |
| 936 /* relative path element */ | |
| 937 char dir[2*PATH_MAX]; | |
| 938 sprintf(dir, "%s%c%s", getcwd(cwdbuf, sizeof(cwdbuf)), | |
| 939 FILE_SEPARATOR, s); | |
| 940 result = Resolve(dir, program); | |
| 941 } | |
| 942 if (result != 0) break; | |
| 943 } | |
| 944 | |
| 945 JLI_MemFree(tmp_path); | |
| 946 return result; | |
| 947 } | |
| 948 | |
| 949 | |
| 950 /* Store the name of the executable once computed */ | |
| 951 static char *execname = NULL; | |
| 952 | |
| 953 /* | |
| 954 * Compute the name of the executable | |
| 955 * | |
| 956 * In order to re-exec securely we need the absolute path of the | |
| 957 * executable. On Solaris getexecname(3c) may not return an absolute | |
| 958 * path so we use dladdr to get the filename of the executable and | |
| 959 * then use realpath to derive an absolute path. From Solaris 9 | |
| 960 * onwards the filename returned in DL_info structure from dladdr is | |
| 961 * an absolute pathname so technically realpath isn't required. | |
| 962 * On Linux we read the executable name from /proc/self/exe. | |
| 963 * As a fallback, and for platforms other than Solaris and Linux, | |
| 964 * we use FindExecName to compute the executable name. | |
| 965 */ | |
| 966 static char * | |
| 967 SetExecname(char **argv) | |
| 968 { | |
| 969 char* exec_path = NULL; | |
| 970 | |
| 971 if (execname != NULL) /* Already determined */ | |
| 972 return (execname); | |
| 973 | |
| 974 #if defined(__sun) | |
| 975 { | |
| 976 Dl_info dlinfo; | |
| 977 if (dladdr((void*)&SetExecname, &dlinfo)) { | |
| 978 char *resolved = (char*)JLI_MemAlloc(PATH_MAX+1); | |
| 979 if (resolved != NULL) { | |
| 980 exec_path = realpath(dlinfo.dli_fname, resolved); | |
| 981 if (exec_path == NULL) { | |
| 982 JLI_MemFree(resolved); | |
| 983 } | |
| 984 } | |
| 985 } | |
| 986 } | |
| 987 #elif defined(__linux__) | |
| 988 { | |
| 989 const char* self = "/proc/self/exe"; | |
| 990 char buf[PATH_MAX+1]; | |
| 991 int len = readlink(self, buf, PATH_MAX); | |
| 992 if (len >= 0) { | |
| 993 buf[len] = '\0'; /* readlink doesn't nul terminate */ | |
| 994 exec_path = JLI_StringDup(buf); | |
| 995 } | |
| 996 } | |
| 997 #else /* !__sun && !__linux */ | |
| 998 { | |
| 999 /* Not implemented */ | |
| 1000 } | |
| 1001 #endif | |
| 1002 | |
| 1003 if (exec_path == NULL) { | |
| 1004 exec_path = FindExecName(argv[0]); | |
| 1005 } | |
| 1006 execname = exec_path; | |
| 1007 return exec_path; | |
| 1008 } | |
| 1009 | |
| 1010 /* | |
| 1011 * Return the name of the executable. Used in java_md.c to find the JRE area. | |
| 1012 */ | |
| 1013 static char * | |
| 1014 GetExecname() { | |
| 1015 return execname; | |
| 1016 } | |
| 1017 | |
| 1018 void ReportErrorMessage(char * message, jboolean always) { | |
| 1019 if (always) { | |
| 1020 fprintf(stderr, "%s\n", message); | |
| 1021 } | |
| 1022 } | |
| 1023 | |
| 1024 void ReportErrorMessage2(char * format, char * string, jboolean always) { | |
| 1025 if (always) { | |
| 1026 fprintf(stderr, format, string); | |
| 1027 fprintf(stderr, "\n"); | |
| 1028 } | |
| 1029 } | |
| 1030 | |
| 1031 void ReportExceptionDescription(JNIEnv * env) { | |
| 1032 (*env)->ExceptionDescribe(env); | |
| 1033 } | |
| 1034 | |
| 1035 /* | |
| 1036 * Return JNI_TRUE for an option string that has no effect but should | |
| 1037 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On | |
| 1038 * Solaris SPARC, this screening needs to be done if: | |
| 1039 * 1) LD_LIBRARY_PATH does _not_ need to be reset and | |
| 1040 * 2) -d32 or -d64 is passed to a binary with a matching data model | |
| 1041 * (the exec in SetLibraryPath removes -d<n> options and points the | |
| 1042 * exec to the proper binary). When this exec is not done, these options | |
| 1043 * would end up getting passed onto the vm. | |
| 1044 */ | |
| 1045 jboolean RemovableMachineDependentOption(char * option) { | |
| 1046 /* | |
| 1047 * Unconditionally remove both -d32 and -d64 options since only | |
| 1048 * the last such options has an effect; e.g. | |
| 1049 * java -d32 -d64 -d32 -version | |
| 1050 * is equivalent to | |
| 1051 * java -d32 -version | |
| 1052 */ | |
| 1053 | |
| 1054 if( (strcmp(option, "-d32") == 0 ) || | |
| 1055 (strcmp(option, "-d64") == 0 )) | |
| 1056 return JNI_TRUE; | |
| 1057 else | |
| 1058 return JNI_FALSE; | |
| 1059 } | |
| 1060 | |
| 1061 void PrintMachineDependentOptions() { | |
| 1062 fprintf(stdout, | |
| 1063 " -d32 use a 32-bit data model if available\n" | |
| 1064 "\n" | |
| 1065 " -d64 use a 64-bit data model if available\n"); | |
| 1066 return; | |
| 1067 } | |
| 1068 | |
| 1069 #ifndef GAMMA | |
| 1070 /* | |
| 1071 * The following methods (down to ServerClassMachine()) answer | |
| 1072 * the question about whether a machine is a "server-class" | |
| 1073 * machine. A server-class machine is loosely defined as one | |
| 1074 * with 2 or more processors and 2 gigabytes or more physical | |
| 1075 * memory. The definition of a processor is a physical package, | |
| 1076 * not a hyperthreaded chip masquerading as a multi-processor. | |
| 1077 * The definition of memory is also somewhat fuzzy, since x86 | |
| 1078 * machines seem not to report all the memory in their DIMMs, we | |
| 1079 * think because of memory mapping of graphics cards, etc. | |
| 1080 * | |
| 1081 * This code is somewhat more confused with #ifdef's than we'd | |
| 1082 * like because this file is used by both Solaris and Linux | |
| 1083 * platforms, and so needs to be parameterized for SPARC and | |
| 1084 * i586 hardware. The other Linux platforms (amd64 and ia64) | |
| 1085 * don't even ask this question, because they only come with | |
| 1086 * server JVMs. */ | |
| 1087 | |
| 1088 # define KB (1024UL) | |
| 1089 # define MB (1024UL * KB) | |
| 1090 # define GB (1024UL * MB) | |
| 1091 | |
| 1092 /* Compute physical memory by asking the OS */ | |
| 1093 uint64_t | |
| 1094 physical_memory(void) { | |
| 1095 const uint64_t pages = (uint64_t) sysconf(_SC_PHYS_PAGES); | |
| 1096 const uint64_t page_size = (uint64_t) sysconf(_SC_PAGESIZE); | |
| 1097 const uint64_t result = pages * page_size; | |
| 1098 # define UINT64_FORMAT "%" PRIu64 | |
| 1099 | |
| 1100 if (_launcher_debug) { | |
| 1101 printf("pages: " UINT64_FORMAT | |
| 1102 " page_size: " UINT64_FORMAT | |
| 1103 " physical memory: " UINT64_FORMAT " (%.3fGB)\n", | |
| 1104 pages, page_size, result, result / (double) GB); | |
| 1105 } | |
| 1106 return result; | |
| 1107 } | |
| 1108 | |
| 1109 #if defined(__sun) && defined(__sparc) | |
| 1110 | |
| 1111 /* Methods for solaris-sparc: these are easy. */ | |
| 1112 | |
| 1113 /* Ask the OS how many processors there are. */ | |
| 1114 unsigned long | |
| 1115 physical_processors(void) { | |
| 1116 const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF); | |
| 1117 | |
| 1118 if (_launcher_debug) { | |
| 1119 printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors); | |
| 1120 } | |
| 1121 return sys_processors; | |
| 1122 } | |
| 1123 | |
| 1124 /* The solaris-sparc version of the "server-class" predicate. */ | |
| 1125 jboolean | |
| 1126 solaris_sparc_ServerClassMachine(void) { | |
| 1127 jboolean result = JNI_FALSE; | |
| 1128 /* How big is a server class machine? */ | |
| 1129 const unsigned long server_processors = 2UL; | |
| 1130 const uint64_t server_memory = 2UL * GB; | |
| 1131 const uint64_t actual_memory = physical_memory(); | |
| 1132 | |
| 1133 /* Is this a server class machine? */ | |
| 1134 if (actual_memory >= server_memory) { | |
| 1135 const unsigned long actual_processors = physical_processors(); | |
| 1136 if (actual_processors >= server_processors) { | |
| 1137 result = JNI_TRUE; | |
| 1138 } | |
| 1139 } | |
| 1140 if (_launcher_debug) { | |
| 1141 printf("solaris_" LIBARCHNAME "_ServerClassMachine: %s\n", | |
| 1142 (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE")); | |
| 1143 } | |
| 1144 return result; | |
| 1145 } | |
| 1146 | |
| 1147 #endif /* __sun && __sparc */ | |
| 1148 | |
| 1149 #if defined(__sun) && defined(i586) | |
| 1150 | |
| 1151 /* | |
| 1152 * A utility method for asking the CPU about itself. | |
| 1153 * There's a corresponding version of linux-i586 | |
| 1154 * because the compilers are different. | |
| 1155 */ | |
| 1156 void | |
| 1157 get_cpuid(uint32_t arg, | |
| 1158 uint32_t* eaxp, | |
| 1159 uint32_t* ebxp, | |
| 1160 uint32_t* ecxp, | |
| 1161 uint32_t* edxp) { | |
| 1162 #ifdef _LP64 | |
| 1163 asm( | |
| 1164 /* rbx is a callee-saved register */ | |
| 1165 " movq %rbx, %r11 \n" | |
| 1166 /* rdx and rcx are 3rd and 4th argument registers */ | |
| 1167 " movq %rdx, %r10 \n" | |
| 1168 " movq %rcx, %r9 \n" | |
| 1169 " movl %edi, %eax \n" | |
| 1170 " cpuid \n" | |
| 1171 " movl %eax, (%rsi)\n" | |
| 1172 " movl %ebx, (%r10)\n" | |
| 1173 " movl %ecx, (%r9) \n" | |
| 1174 " movl %edx, (%r8) \n" | |
| 1175 /* Restore rbx */ | |
| 1176 " movq %r11, %rbx"); | |
| 1177 #else | |
| 1178 /* EBX is a callee-saved register */ | |
| 1179 asm(" pushl %ebx"); | |
| 1180 /* Need ESI for storing through arguments */ | |
| 1181 asm(" pushl %esi"); | |
| 1182 asm(" movl 8(%ebp), %eax \n" | |
| 1183 " cpuid \n" | |
| 1184 " movl 12(%ebp), %esi \n" | |
| 1185 " movl %eax, (%esi) \n" | |
| 1186 " movl 16(%ebp), %esi \n" | |
| 1187 " movl %ebx, (%esi) \n" | |
| 1188 " movl 20(%ebp), %esi \n" | |
| 1189 " movl %ecx, (%esi) \n" | |
| 1190 " movl 24(%ebp), %esi \n" | |
| 1191 " movl %edx, (%esi) "); | |
| 1192 /* Restore ESI and EBX */ | |
| 1193 asm(" popl %esi"); | |
| 1194 /* Restore EBX */ | |
| 1195 asm(" popl %ebx"); | |
| 1196 #endif | |
| 1197 } | |
| 1198 | |
| 1199 #endif /* __sun && i586 */ | |
| 1200 | |
| 3960 | 1201 #if (defined(__linux__) || defined(_ALLBSD_SOURCE)) && defined(i586) |
| 1985 | 1202 |
| 1203 /* | |
| 1204 * A utility method for asking the CPU about itself. | |
| 1205 * There's a corresponding version of solaris-i586 | |
| 1206 * because the compilers are different. | |
| 1207 */ | |
| 1208 void | |
| 1209 get_cpuid(uint32_t arg, | |
| 1210 uint32_t* eaxp, | |
| 1211 uint32_t* ebxp, | |
| 1212 uint32_t* ecxp, | |
| 1213 uint32_t* edxp) { | |
| 1214 #ifdef _LP64 | |
| 1215 __asm__ volatile (/* Instructions */ | |
| 1216 " movl %4, %%eax \n" | |
| 1217 " cpuid \n" | |
| 1218 " movl %%eax, (%0)\n" | |
| 1219 " movl %%ebx, (%1)\n" | |
| 1220 " movl %%ecx, (%2)\n" | |
| 1221 " movl %%edx, (%3)\n" | |
| 1222 : /* Outputs */ | |
| 1223 : /* Inputs */ | |
| 1224 "r" (eaxp), | |
| 1225 "r" (ebxp), | |
| 1226 "r" (ecxp), | |
| 1227 "r" (edxp), | |
| 1228 "r" (arg) | |
| 1229 : /* Clobbers */ | |
| 1230 "%rax", "%rbx", "%rcx", "%rdx", "memory" | |
| 1231 ); | |
| 1232 #else | |
| 1233 uint32_t value_of_eax = 0; | |
| 1234 uint32_t value_of_ebx = 0; | |
| 1235 uint32_t value_of_ecx = 0; | |
| 1236 uint32_t value_of_edx = 0; | |
| 1237 __asm__ volatile (/* Instructions */ | |
| 1238 /* ebx is callee-save, so push it */ | |
| 1239 " pushl %%ebx \n" | |
| 1240 " movl %4, %%eax \n" | |
| 1241 " cpuid \n" | |
| 1242 " movl %%eax, %0 \n" | |
| 1243 " movl %%ebx, %1 \n" | |
| 1244 " movl %%ecx, %2 \n" | |
| 1245 " movl %%edx, %3 \n" | |
| 1246 /* restore ebx */ | |
| 1247 " popl %%ebx \n" | |
| 1248 | |
| 1249 : /* Outputs */ | |
| 1250 "=m" (value_of_eax), | |
| 1251 "=m" (value_of_ebx), | |
| 1252 "=m" (value_of_ecx), | |
| 1253 "=m" (value_of_edx) | |
| 1254 : /* Inputs */ | |
| 1255 "m" (arg) | |
| 1256 : /* Clobbers */ | |
| 1257 "%eax", "%ecx", "%edx" | |
| 1258 ); | |
| 1259 *eaxp = value_of_eax; | |
| 1260 *ebxp = value_of_ebx; | |
| 1261 *ecxp = value_of_ecx; | |
| 1262 *edxp = value_of_edx; | |
| 1263 #endif | |
| 1264 } | |
| 1265 | |
| 1266 #endif /* __linux__ && i586 */ | |
| 1267 | |
| 1268 #ifdef i586 | |
| 1269 /* | |
| 1270 * Routines shared by solaris-i586 and linux-i586. | |
| 1271 */ | |
| 1272 | |
| 1273 enum HyperThreadingSupport_enum { | |
| 1274 hts_supported = 1, | |
| 1275 hts_too_soon_to_tell = 0, | |
| 1276 hts_not_supported = -1, | |
| 1277 hts_not_pentium4 = -2, | |
| 1278 hts_not_intel = -3 | |
| 1279 }; | |
| 1280 typedef enum HyperThreadingSupport_enum HyperThreadingSupport; | |
| 1281 | |
| 1282 /* Determine if hyperthreading is supported */ | |
| 1283 HyperThreadingSupport | |
| 1284 hyperthreading_support(void) { | |
| 1285 HyperThreadingSupport result = hts_too_soon_to_tell; | |
| 1286 /* Bits 11 through 8 is family processor id */ | |
| 1287 # define FAMILY_ID_SHIFT 8 | |
| 1288 # define FAMILY_ID_MASK 0xf | |
| 1289 /* Bits 23 through 20 is extended family processor id */ | |
| 1290 # define EXT_FAMILY_ID_SHIFT 20 | |
| 1291 # define EXT_FAMILY_ID_MASK 0xf | |
| 1292 /* Pentium 4 family processor id */ | |
| 1293 # define PENTIUM4_FAMILY_ID 0xf | |
| 1294 /* Bit 28 indicates Hyper-Threading Technology support */ | |
| 1295 # define HT_BIT_SHIFT 28 | |
| 1296 # define HT_BIT_MASK 1 | |
| 1297 uint32_t vendor_id[3] = { 0U, 0U, 0U }; | |
| 1298 uint32_t value_of_eax = 0U; | |
| 1299 uint32_t value_of_edx = 0U; | |
| 1300 uint32_t dummy = 0U; | |
| 1301 | |
| 1302 /* Yes, this is supposed to be [0], [2], [1] */ | |
| 1303 get_cpuid(0, &dummy, &vendor_id[0], &vendor_id[2], &vendor_id[1]); | |
| 1304 if (_launcher_debug) { | |
| 1305 printf("vendor: %c %c %c %c %c %c %c %c %c %c %c %c \n", | |
| 1306 ((vendor_id[0] >> 0) & 0xff), | |
| 1307 ((vendor_id[0] >> 8) & 0xff), | |
| 1308 ((vendor_id[0] >> 16) & 0xff), | |
| 1309 ((vendor_id[0] >> 24) & 0xff), | |
| 1310 ((vendor_id[1] >> 0) & 0xff), | |
| 1311 ((vendor_id[1] >> 8) & 0xff), | |
| 1312 ((vendor_id[1] >> 16) & 0xff), | |
| 1313 ((vendor_id[1] >> 24) & 0xff), | |
| 1314 ((vendor_id[2] >> 0) & 0xff), | |
| 1315 ((vendor_id[2] >> 8) & 0xff), | |
| 1316 ((vendor_id[2] >> 16) & 0xff), | |
| 1317 ((vendor_id[2] >> 24) & 0xff)); | |
| 1318 } | |
| 1319 get_cpuid(1, &value_of_eax, &dummy, &dummy, &value_of_edx); | |
| 1320 if (_launcher_debug) { | |
| 1321 printf("value_of_eax: 0x%x value_of_edx: 0x%x\n", | |
| 1322 value_of_eax, value_of_edx); | |
| 1323 } | |
| 1324 if ((((value_of_eax >> FAMILY_ID_SHIFT) & FAMILY_ID_MASK) == PENTIUM4_FAMILY_ID) || | |
| 1325 (((value_of_eax >> EXT_FAMILY_ID_SHIFT) & EXT_FAMILY_ID_MASK) != 0)) { | |
| 1326 if ((((vendor_id[0] >> 0) & 0xff) == 'G') && | |
| 1327 (((vendor_id[0] >> 8) & 0xff) == 'e') && | |
| 1328 (((vendor_id[0] >> 16) & 0xff) == 'n') && | |
| 1329 (((vendor_id[0] >> 24) & 0xff) == 'u') && | |
| 1330 (((vendor_id[1] >> 0) & 0xff) == 'i') && | |
| 1331 (((vendor_id[1] >> 8) & 0xff) == 'n') && | |
| 1332 (((vendor_id[1] >> 16) & 0xff) == 'e') && | |
| 1333 (((vendor_id[1] >> 24) & 0xff) == 'I') && | |
| 1334 (((vendor_id[2] >> 0) & 0xff) == 'n') && | |
| 1335 (((vendor_id[2] >> 8) & 0xff) == 't') && | |
| 1336 (((vendor_id[2] >> 16) & 0xff) == 'e') && | |
| 1337 (((vendor_id[2] >> 24) & 0xff) == 'l')) { | |
| 1338 if (((value_of_edx >> HT_BIT_SHIFT) & HT_BIT_MASK) == HT_BIT_MASK) { | |
| 1339 if (_launcher_debug) { | |
| 1340 printf("Hyperthreading supported\n"); | |
| 1341 } | |
| 1342 result = hts_supported; | |
| 1343 } else { | |
| 1344 if (_launcher_debug) { | |
| 1345 printf("Hyperthreading not supported\n"); | |
| 1346 } | |
| 1347 result = hts_not_supported; | |
| 1348 } | |
| 1349 } else { | |
| 1350 if (_launcher_debug) { | |
| 1351 printf("Not GenuineIntel\n"); | |
| 1352 } | |
| 1353 result = hts_not_intel; | |
| 1354 } | |
| 1355 } else { | |
| 1356 if (_launcher_debug) { | |
| 1357 printf("not Pentium 4 or extended\n"); | |
| 1358 } | |
| 1359 result = hts_not_pentium4; | |
| 1360 } | |
| 1361 return result; | |
| 1362 } | |
| 1363 | |
| 1364 /* Determine how many logical processors there are per CPU */ | |
| 1365 unsigned int | |
| 1366 logical_processors_per_package(void) { | |
| 1367 /* | |
| 1368 * After CPUID with EAX==1, register EBX bits 23 through 16 | |
| 1369 * indicate the number of logical processors per package | |
| 1370 */ | |
| 1371 # define NUM_LOGICAL_SHIFT 16 | |
| 1372 # define NUM_LOGICAL_MASK 0xff | |
| 1373 unsigned int result = 1U; | |
| 1374 const HyperThreadingSupport hyperthreading = hyperthreading_support(); | |
| 1375 | |
| 1376 if (hyperthreading == hts_supported) { | |
| 1377 uint32_t value_of_ebx = 0U; | |
| 1378 uint32_t dummy = 0U; | |
| 1379 | |
| 1380 get_cpuid(1, &dummy, &value_of_ebx, &dummy, &dummy); | |
| 1381 result = (value_of_ebx >> NUM_LOGICAL_SHIFT) & NUM_LOGICAL_MASK; | |
| 1382 if (_launcher_debug) { | |
| 1383 printf("logical processors per package: %u\n", result); | |
| 1384 } | |
| 1385 } | |
| 1386 return result; | |
| 1387 } | |
| 1388 | |
| 1389 /* Compute the number of physical processors, not logical processors */ | |
| 1390 unsigned long | |
| 1391 physical_processors(void) { | |
| 1392 const long sys_processors = sysconf(_SC_NPROCESSORS_CONF); | |
| 1393 unsigned long result = sys_processors; | |
| 1394 | |
| 1395 if (_launcher_debug) { | |
| 1396 printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors); | |
| 1397 } | |
| 1398 if (sys_processors > 1) { | |
| 1399 unsigned int logical_processors = logical_processors_per_package(); | |
| 1400 if (logical_processors > 1) { | |
| 1401 result = (unsigned long) sys_processors / logical_processors; | |
| 1402 } | |
| 1403 } | |
| 1404 if (_launcher_debug) { | |
| 1405 printf("physical processors: %lu\n", result); | |
| 1406 } | |
| 1407 return result; | |
| 1408 } | |
| 1409 | |
| 1410 #endif /* i586 */ | |
| 1411 | |
| 1412 #if defined(__sun) && defined(i586) | |
| 1413 | |
| 1414 /* The definition of a server-class machine for solaris-i586/amd64 */ | |
| 1415 jboolean | |
| 1416 solaris_i586_ServerClassMachine(void) { | |
| 1417 jboolean result = JNI_FALSE; | |
| 1418 /* How big is a server class machine? */ | |
| 1419 const unsigned long server_processors = 2UL; | |
| 1420 const uint64_t server_memory = 2UL * GB; | |
| 1421 /* | |
| 1422 * We seem not to get our full complement of memory. | |
| 1423 * We allow some part (1/8?) of the memory to be "missing", | |
| 1424 * based on the sizes of DIMMs, and maybe graphics cards. | |
| 1425 */ | |
| 1426 const uint64_t missing_memory = 256UL * MB; | |
| 1427 const uint64_t actual_memory = physical_memory(); | |
| 1428 | |
| 1429 /* Is this a server class machine? */ | |
| 1430 if (actual_memory >= (server_memory - missing_memory)) { | |
| 1431 const unsigned long actual_processors = physical_processors(); | |
| 1432 if (actual_processors >= server_processors) { | |
| 1433 result = JNI_TRUE; | |
| 1434 } | |
| 1435 } | |
| 1436 if (_launcher_debug) { | |
| 1437 printf("solaris_" LIBARCHNAME "_ServerClassMachine: %s\n", | |
| 1438 (result == JNI_TRUE ? "true" : "false")); | |
| 1439 } | |
| 1440 return result; | |
| 1441 } | |
| 1442 | |
| 1443 #endif /* __sun && i586 */ | |
| 1444 | |
| 1445 #if defined(__linux__) && defined(i586) | |
| 1446 | |
| 1447 /* The definition of a server-class machine for linux-i586 */ | |
| 1448 jboolean | |
| 1449 linux_i586_ServerClassMachine(void) { | |
| 1450 jboolean result = JNI_FALSE; | |
| 1451 /* How big is a server class machine? */ | |
| 1452 const unsigned long server_processors = 2UL; | |
| 1453 const uint64_t server_memory = 2UL * GB; | |
| 1454 /* | |
| 1455 * We seem not to get our full complement of memory. | |
| 1456 * We allow some part (1/8?) of the memory to be "missing", | |
| 1457 * based on the sizes of DIMMs, and maybe graphics cards. | |
| 1458 */ | |
| 1459 const uint64_t missing_memory = 256UL * MB; | |
| 1460 const uint64_t actual_memory = physical_memory(); | |
| 1461 | |
| 1462 /* Is this a server class machine? */ | |
| 1463 if (actual_memory >= (server_memory - missing_memory)) { | |
| 1464 const unsigned long actual_processors = physical_processors(); | |
| 1465 if (actual_processors >= server_processors) { | |
| 1466 result = JNI_TRUE; | |
| 1467 } | |
| 1468 } | |
| 1469 if (_launcher_debug) { | |
| 1470 printf("linux_" LIBARCHNAME "_ServerClassMachine: %s\n", | |
| 1471 (result == JNI_TRUE ? "true" : "false")); | |
| 1472 } | |
| 1473 return result; | |
| 1474 } | |
| 1475 | |
| 1476 #endif /* __linux__ && i586 */ | |
| 1477 | |
| 3960 | 1478 #if defined(_ALLBSD_SOURCE) && defined(i586) |
| 1479 | |
| 1480 /* The definition of a server-class machine for bsd-i586 */ | |
| 1481 jboolean | |
| 1482 bsd_i586_ServerClassMachine(void) { | |
| 1483 jboolean result = JNI_FALSE; | |
| 1484 /* How big is a server class machine? */ | |
| 1485 const unsigned long server_processors = 2UL; | |
| 1486 const uint64_t server_memory = 2UL * GB; | |
| 1487 /* | |
| 1488 * We seem not to get our full complement of memory. | |
| 1489 * We allow some part (1/8?) of the memory to be "missing", | |
| 1490 * based on the sizes of DIMMs, and maybe graphics cards. | |
| 1491 */ | |
| 1492 const uint64_t missing_memory = 256UL * MB; | |
| 1493 const uint64_t actual_memory = physical_memory(); | |
| 1494 | |
| 1495 /* Is this a server class machine? */ | |
| 1496 if (actual_memory >= (server_memory - missing_memory)) { | |
| 1497 const unsigned long actual_processors = physical_processors(); | |
| 1498 if (actual_processors >= server_processors) { | |
| 1499 result = JNI_TRUE; | |
| 1500 } | |
| 1501 } | |
| 1502 if (_launcher_debug) { | |
| 1503 printf("linux_" LIBARCHNAME "_ServerClassMachine: %s\n", | |
| 1504 (result == JNI_TRUE ? "true" : "false")); | |
| 1505 } | |
| 1506 return result; | |
| 1507 } | |
| 1508 | |
| 1509 #endif /* _ALLBSD_SOURCE && i586 */ | |
| 1510 | |
| 1985 | 1511 /* Dispatch to the platform-specific definition of "server-class" */ |
| 1512 jboolean | |
| 1513 ServerClassMachine(void) { | |
| 1514 jboolean result = JNI_FALSE; | |
| 1515 #if defined(NEVER_ACT_AS_SERVER_CLASS_MACHINE) | |
| 1516 result = JNI_FALSE; | |
| 1517 #elif defined(ALWAYS_ACT_AS_SERVER_CLASS_MACHINE) | |
| 1518 result = JNI_TRUE; | |
| 1519 #elif defined(__sun) && defined(__sparc) | |
| 1520 result = solaris_sparc_ServerClassMachine(); | |
| 1521 #elif defined(__sun) && defined(i586) | |
| 1522 result = solaris_i586_ServerClassMachine(); | |
| 1523 #elif defined(__linux__) && defined(i586) | |
| 1524 result = linux_i586_ServerClassMachine(); | |
| 3960 | 1525 #elif defined(_ALLBSD_SOURCE) && defined(i586) |
| 1526 result = bsd_i586_ServerClassMachine(); | |
| 1985 | 1527 #else |
| 1528 if (_launcher_debug) { | |
| 1529 printf("ServerClassMachine: returns default value of %s\n", | |
| 1530 (result == JNI_TRUE ? "true" : "false")); | |
| 1531 } | |
| 1532 #endif | |
| 1533 return result; | |
| 1534 } | |
| 1535 | |
| 1536 /* | |
| 1537 * Since using the file system as a registry is a bit risky, perform | |
| 1538 * additional sanity checks on the identified directory to validate | |
| 1539 * it as a valid jre/sdk. | |
| 1540 * | |
| 1541 * Return 0 if the tests fail; otherwise return non-zero (true). | |
| 1542 * | |
| 1543 * Note that checking for anything more than the existence of an | |
| 1544 * executable object at bin/java relative to the path being checked | |
| 1545 * will break the regression tests. | |
| 1546 */ | |
| 1547 static int | |
| 1548 CheckSanity(char *path, char *dir) | |
| 1549 { | |
| 1550 char buffer[PATH_MAX]; | |
| 1551 | |
| 1552 if (strlen(path) + strlen(dir) + 11 > PATH_MAX) | |
| 1553 return (0); /* Silently reject "impossibly" long paths */ | |
| 1554 | |
| 1555 (void)strcat(strcat(strcat(strcpy(buffer, path), "/"), dir), "/bin/java"); | |
| 1556 return ((access(buffer, X_OK) == 0) ? 1 : 0); | |
| 1557 } | |
| 1558 | |
| 1559 /* | |
| 1560 * Determine if there is an acceptable JRE in the directory dirname. | |
| 1561 * Upon locating the "best" one, return a fully qualified path to | |
| 1562 * it. "Best" is defined as the most advanced JRE meeting the | |
| 1563 * constraints contained in the manifest_info. If no JRE in this | |
| 1564 * directory meets the constraints, return NULL. | |
| 1565 * | |
| 1566 * Note that we don't check for errors in reading the directory | |
| 1567 * (which would be done by checking errno). This is because it | |
| 1568 * doesn't matter if we get an error reading the directory, or | |
| 1569 * we just don't find anything interesting in the directory. We | |
| 1570 * just return NULL in either case. | |
| 1571 * | |
| 1572 * The historical names of j2sdk and j2re were changed to jdk and | |
| 1573 * jre respecively as part of the 1.5 rebranding effort. Since the | |
| 1574 * former names are legacy on Linux, they must be recognized for | |
| 1575 * all time. Fortunately, this is a minor cost. | |
| 1576 */ | |
| 1577 static char | |
| 1578 *ProcessDir(manifest_info *info, char *dirname) | |
| 1579 { | |
| 1580 DIR *dirp; | |
| 1581 struct dirent *dp; | |
| 1582 char *best = NULL; | |
| 1583 int offset; | |
| 1584 int best_offset = 0; | |
| 1585 char *ret_str = NULL; | |
| 1586 char buffer[PATH_MAX]; | |
| 1587 | |
| 1588 if ((dirp = opendir(dirname)) == NULL) | |
| 1589 return (NULL); | |
| 1590 | |
| 1591 do { | |
| 1592 if ((dp = readdir(dirp)) != NULL) { | |
| 1593 offset = 0; | |
| 1594 if ((strncmp(dp->d_name, "jre", 3) == 0) || | |
| 1595 (strncmp(dp->d_name, "jdk", 3) == 0)) | |
| 1596 offset = 3; | |
| 1597 else if (strncmp(dp->d_name, "j2re", 4) == 0) | |
| 1598 offset = 4; | |
| 1599 else if (strncmp(dp->d_name, "j2sdk", 5) == 0) | |
| 1600 offset = 5; | |
| 1601 if (offset > 0) { | |
| 1602 if ((JLI_AcceptableRelease(dp->d_name + offset, | |
| 1603 info->jre_version)) && CheckSanity(dirname, dp->d_name)) | |
| 1604 if ((best == NULL) || (JLI_ExactVersionId( | |
| 1605 dp->d_name + offset, best + best_offset) > 0)) { | |
| 1606 if (best != NULL) | |
| 1607 JLI_MemFree(best); | |
| 1608 best = JLI_StringDup(dp->d_name); | |
| 1609 best_offset = offset; | |
| 1610 } | |
| 1611 } | |
| 1612 } | |
| 1613 } while (dp != NULL); | |
| 1614 (void) closedir(dirp); | |
| 1615 if (best == NULL) | |
| 1616 return (NULL); | |
| 1617 else { | |
| 1618 ret_str = JLI_MemAlloc(strlen(dirname) + strlen(best) + 2); | |
| 1619 ret_str = strcat(strcat(strcpy(ret_str, dirname), "/"), best); | |
| 1620 JLI_MemFree(best); | |
| 1621 return (ret_str); | |
| 1622 } | |
| 1623 } | |
| 1624 | |
| 1625 /* | |
| 1626 * This is the global entry point. It examines the host for the optimal | |
| 1627 * JRE to be used by scanning a set of directories. The set of directories | |
| 1628 * is platform dependent and can be overridden by the environment | |
| 1629 * variable JAVA_VERSION_PATH. | |
| 1630 * | |
| 1631 * This routine itself simply determines the set of appropriate | |
| 1632 * directories before passing control onto ProcessDir(). | |
| 1633 */ | |
| 1634 char* | |
| 1635 LocateJRE(manifest_info* info) | |
| 1636 { | |
| 1637 char *path; | |
| 1638 char *home; | |
| 1639 char *target = NULL; | |
| 1640 char *dp; | |
| 1641 char *cp; | |
| 1642 | |
| 1643 /* | |
| 1644 * Start by getting JAVA_VERSION_PATH | |
| 1645 */ | |
| 1646 if (info->jre_restrict_search) | |
| 1647 path = JLI_StringDup(system_dir); | |
| 1648 else if ((path = getenv("JAVA_VERSION_PATH")) != NULL) | |
| 1649 path = JLI_StringDup(path); | |
| 1650 else | |
| 1651 if ((home = getenv("HOME")) != NULL) { | |
| 1652 path = (char *)JLI_MemAlloc(strlen(home) + strlen(system_dir) + | |
| 1653 strlen(user_dir) + 2); | |
| 1654 path = strcat(strcat(strcat(strcpy(path, home), | |
| 1655 user_dir), ":"), system_dir); | |
| 1656 } else | |
| 1657 path = JLI_StringDup(system_dir); | |
| 1658 | |
| 1659 /* | |
| 1660 * Step through each directory on the path. Terminate the scan with | |
| 1661 * the first directory with an acceptable JRE. | |
| 1662 */ | |
| 1663 cp = dp = path; | |
| 1664 while (dp != NULL) { | |
| 1665 cp = strchr(dp, (int)':'); | |
| 1666 if (cp != NULL) | |
| 1667 *cp = (char)NULL; | |
| 1668 if ((target = ProcessDir(info, dp)) != NULL) | |
| 1669 break; | |
| 1670 dp = cp; | |
| 1671 if (dp != NULL) | |
| 1672 dp++; | |
| 1673 } | |
| 1674 JLI_MemFree(path); | |
| 1675 return (target); | |
| 1676 } | |
| 1677 | |
| 1678 /* | |
| 1679 * Given a path to a jre to execute, this routine checks if this process | |
| 1680 * is indeed that jre. If not, it exec's that jre. | |
| 1681 * | |
| 1682 * We want to actually check the paths rather than just the version string | |
| 1683 * built into the executable, so that given version specification (and | |
| 1684 * JAVA_VERSION_PATH) will yield the exact same Java environment, regardless | |
| 1685 * of the version of the arbitrary launcher we start with. | |
| 1686 */ | |
| 1687 void | |
| 1688 ExecJRE(char *jre, char **argv) | |
| 1689 { | |
| 1690 char wanted[PATH_MAX]; | |
| 1691 char *execname; | |
| 1692 char *progname; | |
| 1693 | |
| 1694 /* | |
| 1695 * Resolve the real path to the directory containing the selected JRE. | |
| 1696 */ | |
| 1697 if (realpath(jre, wanted) == NULL) { | |
| 1698 fprintf(stderr, "Unable to resolve %s\n", jre); | |
| 1699 exit(1); | |
| 1700 } | |
| 1701 | |
| 1702 /* | |
| 1703 * Resolve the real path to the currently running launcher. | |
| 1704 */ | |
| 1705 execname = SetExecname(argv); | |
| 1706 if (execname == NULL) { | |
| 1707 fprintf(stderr, "Unable to resolve current executable\n"); | |
| 1708 exit(1); | |
| 1709 } | |
| 1710 | |
| 1711 /* | |
| 1712 * If the path to the selected JRE directory is a match to the initial | |
| 1713 * portion of the path to the currently executing JRE, we have a winner! | |
| 1714 * If so, just return. | |
| 1715 */ | |
| 1716 if (strncmp(wanted, execname, strlen(wanted)) == 0) | |
| 1717 return; /* I am the droid you were looking for */ | |
| 1718 | |
| 1719 /* | |
| 1720 * If this isn't the selected version, exec the selected version. | |
| 1721 */ | |
| 1722 #ifdef JAVA_ARGS /* javac, jar and friends. */ | |
| 1723 progname = "java"; | |
| 1724 #else /* java, oldjava, javaw and friends */ | |
| 1725 #ifdef PROGNAME | |
| 1726 progname = PROGNAME; | |
| 1727 #else | |
| 1728 progname = *argv; | |
| 1729 if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) { | |
| 1730 progname = s + 1; | |
| 1731 } | |
| 1732 #endif /* PROGNAME */ | |
| 1733 #endif /* JAVA_ARGS */ | |
| 1734 | |
| 1735 /* | |
| 1736 * This should never happen (because of the selection code in SelectJRE), | |
| 1737 * but check for "impossibly" long path names just because buffer overruns | |
| 1738 * can be so deadly. | |
| 1739 */ | |
| 1740 if (strlen(wanted) + strlen(progname) + 6 > PATH_MAX) { | |
| 1741 fprintf(stderr, "Path length exceeds maximum length (PATH_MAX)\n"); | |
| 1742 exit(1); | |
| 1743 } | |
| 1744 | |
| 1745 /* | |
| 1746 * Construct the path and exec it. | |
| 1747 */ | |
| 1748 (void)strcat(strcat(wanted, "/bin/"), progname); | |
| 1749 argv[0] = progname; | |
| 1750 if (_launcher_debug) { | |
| 1751 int i; | |
| 1752 printf("ReExec Command: %s (%s)\n", wanted, argv[0]); | |
| 1753 printf("ReExec Args:"); | |
| 1754 for (i = 1; argv[i] != NULL; i++) | |
| 1755 printf(" %s", argv[i]); | |
| 1756 printf("\n"); | |
| 1757 } | |
| 1758 (void)fflush(stdout); | |
| 1759 (void)fflush(stderr); | |
| 1760 execv(wanted, argv); | |
| 1761 perror("execv()"); | |
| 1762 fprintf(stderr, "Exec of %s failed\n", wanted); | |
| 1763 exit(1); | |
| 1764 } | |
| 1765 #endif /* ifndef GAMMA */ | |
| 1766 | |
| 1767 /* | |
| 1768 * "Borrowed" from Solaris 10 where the unsetenv() function is being added | |
| 1769 * to libc thanks to SUSv3 (Standard Unix Specification, version 3). As | |
| 1770 * such, in the fullness of time this will appear in libc on all relevant | |
| 1771 * Solaris/Linux platforms and maybe even the Windows platform. At that | |
| 1772 * time, this stub can be removed. | |
| 1773 * | |
| 1774 * This implementation removes the environment locking for multithreaded | |
| 1775 * applications. (We don't have access to these mutexes within libc and | |
| 1776 * the launcher isn't multithreaded.) Note that what remains is platform | |
| 1777 * independent, because it only relies on attributes that a POSIX environment | |
| 1778 * defines. | |
| 1779 * | |
| 1780 * Returns 0 on success, -1 on failure. | |
| 1781 * | |
| 1782 * Also removed was the setting of errno. The only value of errno set | |
| 1783 * was EINVAL ("Invalid Argument"). | |
| 1784 */ | |
| 1785 | |
| 1786 /* | |
| 1787 * s1(environ) is name=value | |
| 1788 * s2(name) is name(not the form of name=value). | |
| 1789 * if names match, return value of 1, else return 0 | |
| 1790 */ | |
| 1791 static int | |
| 1792 match_noeq(const char *s1, const char *s2) | |
| 1793 { | |
| 1794 while (*s1 == *s2++) { | |
| 1795 if (*s1++ == '=') | |
| 1796 return (1); | |
| 1797 } | |
| 1798 if (*s1 == '=' && s2[-1] == '\0') | |
| 1799 return (1); | |
| 1800 return (0); | |
| 1801 } | |
| 1802 | |
| 1803 /* | |
| 1804 * added for SUSv3 standard | |
| 1805 * | |
| 1806 * Delete entry from environ. | |
| 1807 * Do not free() memory! Other threads may be using it. | |
| 1808 * Keep it around forever. | |
| 1809 */ | |
| 1810 static int | |
| 1811 borrowed_unsetenv(const char *name) | |
| 1812 { | |
| 1813 long idx; /* index into environ */ | |
| 1814 | |
| 1815 if (name == NULL || *name == '\0' || | |
| 1816 strchr(name, '=') != NULL) { | |
| 1817 return (-1); | |
| 1818 } | |
| 1819 | |
| 1820 for (idx = 0; environ[idx] != NULL; idx++) { | |
| 1821 if (match_noeq(environ[idx], name)) | |
| 1822 break; | |
| 1823 } | |
| 1824 if (environ[idx] == NULL) { | |
| 1825 /* name not found but still a success */ | |
| 1826 return (0); | |
| 1827 } | |
| 1828 /* squeeze up one entry */ | |
| 1829 do { | |
| 1830 environ[idx] = environ[idx+1]; | |
| 1831 } while (environ[++idx] != NULL); | |
| 1832 | |
| 1833 return (0); | |
| 1834 } | |
| 1835 /* --- End of "borrowed" code --- */ | |
| 1836 | |
| 1837 /* | |
| 1838 * Wrapper for unsetenv() function. | |
| 1839 */ | |
| 1840 int | |
| 1841 UnsetEnv(char *name) | |
| 1842 { | |
| 1843 return(borrowed_unsetenv(name)); | |
| 1844 } | |
| 1845 | |
| 1846 /* --- Splash Screen shared library support --- */ | |
| 1847 | |
| 1848 static const char* SPLASHSCREEN_SO = "libsplashscreen.so"; | |
| 1849 | |
| 1850 static void* hSplashLib = NULL; | |
| 1851 | |
| 1852 void* SplashProcAddress(const char* name) { | |
| 1853 if (!hSplashLib) { | |
| 1854 hSplashLib = dlopen(SPLASHSCREEN_SO, RTLD_LAZY | RTLD_GLOBAL); | |
| 1855 } | |
| 1856 if (hSplashLib) { | |
| 1857 void* sym = dlsym(hSplashLib, name); | |
| 1858 return sym; | |
| 1859 } else { | |
| 1860 return NULL; | |
| 1861 } | |
| 1862 } | |
| 1863 | |
| 1864 void SplashFreeLibrary() { | |
| 1865 if (hSplashLib) { | |
| 1866 dlclose(hSplashLib); | |
| 1867 hSplashLib = NULL; | |
| 1868 } | |
| 1869 } | |
| 1870 | |
| 1871 const char * | |
| 1872 jlong_format_specifier() { | |
| 1873 return "%lld"; | |
| 1874 } | |
| 1875 | |
| 1876 /* | |
| 1877 * Block current thread and continue execution in a new thread | |
| 1878 */ | |
| 1879 int | |
| 1880 ContinueInNewThread(int (JNICALL *continuation)(void *), jlong stack_size, void * args) { | |
| 1881 int rslt; | |
| 3960 | 1882 #if defined(__linux__) || defined(_ALLBSD_SOURCE) |
| 1985 | 1883 pthread_t tid; |
| 1884 pthread_attr_t attr; | |
| 1885 pthread_attr_init(&attr); | |
| 1886 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE); | |
| 1887 | |
| 1888 if (stack_size > 0) { | |
| 1889 pthread_attr_setstacksize(&attr, stack_size); | |
| 1890 } | |
| 1891 | |
| 1892 if (pthread_create(&tid, &attr, (void *(*)(void*))continuation, (void*)args) == 0) { | |
| 1893 void * tmp; | |
| 1894 pthread_join(tid, &tmp); | |
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1895 rslt = (int)(intptr_t)tmp; |
| 1985 | 1896 } else { |
| 1897 /* | |
| 1898 * Continue execution in current thread if for some reason (e.g. out of | |
| 1899 * memory/LWP) a new thread can't be created. This will likely fail | |
| 1900 * later in continuation as JNI_CreateJavaVM needs to create quite a | |
| 1901 * few new threads, anyway, just give it a try.. | |
| 1902 */ | |
| 1903 rslt = continuation(args); | |
| 1904 } | |
| 1905 | |
| 1906 pthread_attr_destroy(&attr); | |
| 1907 #else | |
| 1908 thread_t tid; | |
| 1909 long flags = 0; | |
| 1910 if (thr_create(NULL, stack_size, (void *(*)(void *))continuation, args, flags, &tid) == 0) { | |
| 1911 void * tmp; | |
| 1912 thr_join(tid, NULL, &tmp); | |
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1913 rslt = (int)(intptr_t)tmp; |
| 1985 | 1914 } else { |
| 1915 /* See above. Continue in current thread if thr_create() failed */ | |
| 1916 rslt = continuation(args); | |
| 1917 } | |
| 1918 #endif | |
| 1919 return rslt; | |
| 1920 } | |
| 1921 | |
| 1922 /* Coarse estimation of number of digits assuming the worst case is a 64-bit pid. */ | |
| 1923 #define MAX_PID_STR_SZ 20 | |
| 1924 | |
| 1925 void SetJavaLauncherPlatformProps() { | |
| 1926 /* Linux only */ | |
| 1927 #ifdef __linux__ | |
| 1928 const char *substr = "-Dsun.java.launcher.pid="; | |
| 1929 char *pid_prop_str = (char *)JLI_MemAlloc(strlen(substr) + MAX_PID_STR_SZ + 1); | |
| 1930 sprintf(pid_prop_str, "%s%d", substr, getpid()); | |
| 1931 AddOption(pid_prop_str, NULL); | |
| 1932 #endif | |
| 1933 } |