Mercurial > hg > graal-compiler
annotate src/os/linux/launcher/java_md.c @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | 126ea7725993 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 /* | |
| 26 * Gamma (Hotspot internal engineering test) launcher based on 1.6.0-b28 JDK, | |
| 27 * search "GAMMA" for gamma specific changes. | |
| 28 */ | |
| 29 | |
| 30 #include "java.h" | |
| 31 #include <dirent.h> | |
| 32 #include <dlfcn.h> | |
| 33 #include <fcntl.h> | |
| 34 #include <inttypes.h> | |
| 35 #include <stdio.h> | |
| 36 #include <string.h> | |
| 37 #include <stdlib.h> | |
| 38 #include <limits.h> | |
| 39 #include <sys/stat.h> | |
| 40 #include <unistd.h> | |
| 41 #include <sys/types.h> | |
| 42 | |
| 43 #ifndef GAMMA | |
| 44 #include "manifest_info.h" | |
| 45 #include "version_comp.h" | |
| 46 #endif | |
| 47 | |
| 48 #define JVM_DLL "libjvm.so" | |
| 49 #define JAVA_DLL "libjava.so" | |
| 50 | |
| 51 #ifndef GAMMA /* launcher.make defines ARCH */ | |
| 52 | |
| 53 /* | |
| 54 * If a processor / os combination has the ability to run binaries of | |
| 55 * two data models and cohabitation of jre/jdk bits with both data | |
| 56 * models is supported, then DUAL_MODE is defined. When DUAL_MODE is | |
| 57 * defined, the architecture names for the narrow and wide version of | |
| 58 * the architecture are defined in BIG_ARCH and SMALL_ARCH. Currently | |
| 59 * only Solaris on sparc/sparcv9 and i586/amd64 is DUAL_MODE; linux | |
| 60 * i586/amd64 could be defined as DUAL_MODE but that is not the | |
| 61 * current policy. | |
| 62 */ | |
| 63 | |
| 64 #ifdef _LP64 | |
| 65 | |
| 66 # ifdef ia64 | |
| 67 # define ARCH "ia64" | |
| 68 # elif defined(amd64) | |
| 69 # define ARCH "amd64" | |
| 70 # elif defined(__sparc) | |
| 71 # define ARCH "sparcv9" | |
| 72 # else | |
| 73 # define ARCH "unknown" /* unknown 64-bit architecture */ | |
| 74 # endif | |
| 75 | |
| 76 #else /* 32-bit data model */ | |
| 77 | |
| 78 # ifdef i586 | |
| 79 # define ARCH "i386" | |
| 80 # elif defined(__sparc) | |
| 81 # define ARCH "sparc" | |
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82 # elif defined(arm) |
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83 # define ARCH "arm" |
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84 # elif defined(PPC) |
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85 # define ARCH "ppc" |
| 0 | 86 # endif |
| 87 | |
| 88 #endif /* _LP64 */ | |
| 89 | |
| 90 #ifdef __sun | |
| 91 # define DUAL_MODE | |
| 92 # ifdef __sparc | |
| 93 # define BIG_ARCH "sparcv9" | |
| 94 # define SMALL_ARCH "sparc" | |
| 95 # else | |
| 96 # define BIG_ARCH "amd64" | |
| 97 # define SMALL_ARCH "i386" | |
| 98 # endif | |
| 99 # include <sys/systeminfo.h> | |
| 100 # include <sys/elf.h> | |
| 101 # include <stdio.h> | |
| 102 #else | |
| 103 # ifndef ARCH | |
| 104 # include <sys/systeminfo.h> | |
| 105 # endif | |
| 106 #endif | |
| 107 | |
| 108 #endif /* ifndef GAMMA */ | |
| 109 | |
| 110 /* pointer to environment */ | |
| 111 extern char **environ; | |
| 112 | |
| 113 #ifndef GAMMA | |
| 114 | |
| 115 /* | |
| 116 * A collection of useful strings. One should think of these as #define | |
| 117 * entries, but actual strings can be more efficient (with many compilers). | |
| 118 */ | |
| 119 #ifdef __linux__ | |
| 120 static const char *system_dir = "/usr/java"; | |
| 121 static const char *user_dir = "/java"; | |
| 122 #else /* Solaris */ | |
| 123 static const char *system_dir = "/usr/jdk"; | |
| 124 static const char *user_dir = "/jdk"; | |
| 125 #endif | |
| 126 | |
| 127 #endif /* ifndef GAMMA */ | |
| 128 | |
| 129 /* | |
| 130 * Flowchart of launcher execs and options processing on unix | |
| 131 * | |
| 132 * The selection of the proper vm shared library to open depends on | |
| 133 * several classes of command line options, including vm "flavor" | |
| 134 * options (-client, -server) and the data model options, -d32 and | |
| 135 * -d64, as well as a version specification which may have come from | |
| 136 * the command line or from the manifest of an executable jar file. | |
| 137 * The vm selection options are not passed to the running | |
| 138 * virtual machine; they must be screened out by the launcher. | |
| 139 * | |
| 140 * The version specification (if any) is processed first by the | |
| 141 * platform independent routine SelectVersion. This may result in | |
| 142 * the exec of the specified launcher version. | |
| 143 * | |
| 144 * Typically, the launcher execs at least once to ensure a suitable | |
| 145 * LD_LIBRARY_PATH is in effect for the process. The first exec | |
| 146 * screens out all the data model options; leaving the choice of data | |
| 147 * model implicit in the binary selected to run. However, in case no | |
| 148 * exec is done, the data model options are screened out before the vm | |
| 149 * is invoked. | |
| 150 * | |
| 151 * incoming argv ------------------------------ | |
| 152 * | | | |
| 153 * \|/ | | |
| 154 * CheckJVMType | | |
| 155 * (removes -client, -server, etc.) | | |
| 156 * \|/ | |
| 157 * CreateExecutionEnvironment | |
| 158 * (removes -d32 and -d64, | |
| 159 * determines desired data model, | |
| 160 * sets up LD_LIBRARY_PATH, | |
| 161 * and exec's) | |
| 162 * | | |
| 163 * -------------------------------------------- | |
| 164 * | | |
| 165 * \|/ | |
| 166 * exec child 1 incoming argv ----------------- | |
| 167 * | | | |
| 168 * \|/ | | |
| 169 * CheckJVMType | | |
| 170 * (removes -client, -server, etc.) | | |
| 171 * | \|/ | |
| 172 * | CreateExecutionEnvironment | |
| 173 * | (verifies desired data model | |
| 174 * | is running and acceptable | |
| 175 * | LD_LIBRARY_PATH; | |
| 176 * | no-op in child) | |
| 177 * | | |
| 178 * \|/ | |
| 179 * TranslateDashJArgs... | |
| 180 * (Prepare to pass args to vm) | |
| 181 * | | |
| 182 * | | |
| 183 * | | |
| 184 * \|/ | |
| 185 * ParseArguments | |
| 186 * (ignores -d32 and -d64, | |
| 187 * processes version options, | |
| 188 * creates argument list for vm, | |
| 189 * etc.) | |
| 190 * | |
| 191 */ | |
| 192 | |
| 193 static char *SetExecname(char **argv); | |
| 194 static char * GetExecname(); | |
| 195 static jboolean GetJVMPath(const char *jrepath, const char *jvmtype, | |
| 196 char *jvmpath, jint jvmpathsize, char * arch); | |
| 197 static jboolean GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative); | |
| 198 | |
| 199 const char * | |
| 200 GetArch() | |
| 201 { | |
| 202 static char *arch = NULL; | |
| 203 static char buf[12]; | |
| 204 if (arch) { | |
| 205 return arch; | |
| 206 } | |
| 207 | |
| 208 #ifdef ARCH | |
| 209 strcpy(buf, ARCH); | |
| 210 #else | |
| 211 sysinfo(SI_ARCHITECTURE, buf, sizeof(buf)); | |
| 212 #endif | |
| 213 arch = buf; | |
| 214 return arch; | |
| 215 } | |
| 216 | |
| 217 void | |
| 218 CreateExecutionEnvironment(int *_argcp, | |
| 219 char ***_argvp, | |
| 220 char jrepath[], | |
| 221 jint so_jrepath, | |
| 222 char jvmpath[], | |
| 223 jint so_jvmpath, | |
| 224 char **original_argv) { | |
| 225 /* | |
| 226 * First, determine if we are running the desired data model. If we | |
| 227 * are running the desired data model, all the error messages | |
| 228 * associated with calling GetJREPath, ReadKnownVMs, etc. should be | |
| 229 * output. However, if we are not running the desired data model, | |
| 230 * some of the errors should be suppressed since it is more | |
| 231 * informative to issue an error message based on whether or not the | |
| 232 * os/processor combination has dual mode capabilities. | |
| 233 */ | |
| 234 | |
| 235 char *execname = NULL; | |
| 236 int original_argc = *_argcp; | |
| 237 jboolean jvmpathExists; | |
| 238 | |
| 239 /* Compute the name of the executable */ | |
| 240 execname = SetExecname(*_argvp); | |
| 241 | |
| 242 #ifndef GAMMA | |
| 243 /* Set the LD_LIBRARY_PATH environment variable, check data model | |
| 244 flags, and exec process, if needed */ | |
| 245 { | |
| 246 char *arch = (char *)GetArch(); /* like sparc or sparcv9 */ | |
| 247 char * jvmtype = NULL; | |
| 248 int argc = *_argcp; | |
| 249 char **argv = original_argv; | |
| 250 | |
| 251 char *runpath = NULL; /* existing effective LD_LIBRARY_PATH | |
| 252 setting */ | |
| 253 | |
| 254 int running = /* What data model is being ILP32 => | |
| 255 32 bit vm; LP64 => 64 bit vm */ | |
| 256 #ifdef _LP64 | |
| 257 64; | |
| 258 #else | |
| 259 32; | |
| 260 #endif | |
| 261 | |
| 262 int wanted = running; /* What data mode is being | |
| 263 asked for? Current model is | |
| 264 fine unless another model | |
| 265 is asked for */ | |
| 266 | |
| 267 char* new_runpath = NULL; /* desired new LD_LIBRARY_PATH string */ | |
| 268 char* newpath = NULL; /* path on new LD_LIBRARY_PATH */ | |
| 269 char* lastslash = NULL; | |
| 270 | |
| 271 char** newenvp = NULL; /* current environment */ | |
| 272 | |
| 273 char** newargv = NULL; | |
| 274 int newargc = 0; | |
| 275 #ifdef __sun | |
| 276 char* dmpath = NULL; /* data model specific LD_LIBRARY_PATH, | |
| 277 Solaris only */ | |
| 278 #endif | |
| 279 | |
| 280 /* | |
| 281 * Starting in 1.5, all unix platforms accept the -d32 and -d64 | |
| 282 * options. On platforms where only one data-model is supported | |
| 283 * (e.g. ia-64 Linux), using the flag for the other data model is | |
| 284 * an error and will terminate the program. | |
| 285 */ | |
| 286 | |
| 287 { /* open new scope to declare local variables */ | |
| 288 int i; | |
| 289 | |
| 290 newargv = (char **)MemAlloc((argc+1) * sizeof(*newargv)); | |
| 291 newargv[newargc++] = argv[0]; | |
| 292 | |
| 293 /* scan for data model arguments and remove from argument list; | |
| 294 last occurrence determines desired data model */ | |
| 295 for (i=1; i < argc; i++) { | |
| 296 | |
| 297 if (strcmp(argv[i], "-J-d64") == 0 || strcmp(argv[i], "-d64") == 0) { | |
| 298 wanted = 64; | |
| 299 continue; | |
| 300 } | |
| 301 if (strcmp(argv[i], "-J-d32") == 0 || strcmp(argv[i], "-d32") == 0) { | |
| 302 wanted = 32; | |
| 303 continue; | |
| 304 } | |
| 305 newargv[newargc++] = argv[i]; | |
| 306 | |
| 307 #ifdef JAVA_ARGS | |
| 308 if (argv[i][0] != '-') | |
| 309 continue; | |
| 310 #else | |
| 311 if (strcmp(argv[i], "-classpath") == 0 || strcmp(argv[i], "-cp") == 0) { | |
| 312 i++; | |
| 313 if (i >= argc) break; | |
| 314 newargv[newargc++] = argv[i]; | |
| 315 continue; | |
| 316 } | |
| 317 if (argv[i][0] != '-') { i++; break; } | |
| 318 #endif | |
| 319 } | |
| 320 | |
| 321 /* copy rest of args [i .. argc) */ | |
| 322 while (i < argc) { | |
| 323 newargv[newargc++] = argv[i++]; | |
| 324 } | |
| 325 newargv[newargc] = NULL; | |
| 326 | |
| 327 /* | |
| 328 * newargv has all proper arguments here | |
| 329 */ | |
| 330 | |
| 331 argc = newargc; | |
| 332 argv = newargv; | |
| 333 } | |
| 334 | |
| 335 /* If the data model is not changing, it is an error if the | |
| 336 jvmpath does not exist */ | |
| 337 if (wanted == running) { | |
| 338 /* Find out where the JRE is that we will be using. */ | |
| 339 if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) { | |
| 340 fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n"); | |
| 341 exit(2); | |
| 342 } | |
| 343 | |
| 344 /* Find the specified JVM type */ | |
| 345 if (ReadKnownVMs(jrepath, arch, JNI_FALSE) < 1) { | |
| 346 fprintf(stderr, "Error: no known VMs. (check for corrupt jvm.cfg file)\n"); | |
| 347 exit(1); | |
| 348 } | |
| 349 | |
| 350 jvmpath[0] = '\0'; | |
| 351 jvmtype = CheckJvmType(_argcp, _argvp, JNI_FALSE); | |
| 352 | |
| 353 if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, arch )) { | |
| 354 fprintf(stderr, "Error: no `%s' JVM at `%s'.\n", jvmtype, jvmpath); | |
| 355 exit(4); | |
| 356 } | |
| 357 } else { /* do the same speculatively or exit */ | |
| 358 #ifdef DUAL_MODE | |
| 359 if (running != wanted) { | |
| 360 /* Find out where the JRE is that we will be using. */ | |
| 361 if (!GetJREPath(jrepath, so_jrepath, ((wanted==64)?BIG_ARCH:SMALL_ARCH), JNI_TRUE)) { | |
| 362 goto EndDataModelSpeculate; | |
| 363 } | |
| 364 | |
| 365 /* | |
| 366 * Read in jvm.cfg for target data model and process vm | |
| 367 * selection options. | |
| 368 */ | |
| 369 if (ReadKnownVMs(jrepath, ((wanted==64)?BIG_ARCH:SMALL_ARCH), JNI_TRUE) < 1) { | |
| 370 goto EndDataModelSpeculate; | |
| 371 } | |
| 372 jvmpath[0] = '\0'; | |
| 373 jvmtype = CheckJvmType(_argcp, _argvp, JNI_TRUE); | |
| 374 /* exec child can do error checking on the existence of the path */ | |
| 375 jvmpathExists = GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, | |
| 376 ((wanted==64)?BIG_ARCH:SMALL_ARCH)); | |
| 377 | |
| 378 } | |
| 379 EndDataModelSpeculate: /* give up and let other code report error message */ | |
| 380 ; | |
| 381 #else | |
| 382 fprintf(stderr, "Running a %d-bit JVM is not supported on this platform.\n", wanted); | |
| 383 exit(1); | |
| 384 #endif | |
| 385 } | |
| 386 | |
| 387 /* | |
| 388 * We will set the LD_LIBRARY_PATH as follows: | |
| 389 * | |
| 390 * o $JVMPATH (directory portion only) | |
| 391 * o $JRE/lib/$ARCH | |
| 392 * o $JRE/../lib/$ARCH | |
| 393 * | |
| 394 * followed by the user's previous effective LD_LIBRARY_PATH, if | |
| 395 * any. | |
| 396 */ | |
| 397 | |
| 398 #ifdef __sun | |
| 399 /* | |
| 400 * Starting in Solaris 7, ld.so.1 supports three LD_LIBRARY_PATH | |
| 401 * variables: | |
| 402 * | |
| 403 * 1. LD_LIBRARY_PATH -- used for 32 and 64 bit searches if | |
| 404 * data-model specific variables are not set. | |
| 405 * | |
| 406 * 2. LD_LIBRARY_PATH_64 -- overrides and replaces LD_LIBRARY_PATH | |
| 407 * for 64-bit binaries. | |
| 408 * | |
| 409 * 3. LD_LIBRARY_PATH_32 -- overrides and replaces LD_LIBRARY_PATH | |
| 410 * for 32-bit binaries. | |
| 411 * | |
| 412 * The vm uses LD_LIBRARY_PATH to set the java.library.path system | |
| 413 * property. To shield the vm from the complication of multiple | |
| 414 * LD_LIBRARY_PATH variables, if the appropriate data model | |
| 415 * specific variable is set, we will act as if LD_LIBRARY_PATH had | |
| 416 * the value of the data model specific variant and the data model | |
| 417 * specific variant will be unset. Note that the variable for the | |
| 418 * *wanted* data model must be used (if it is set), not simply the | |
| 419 * current running data model. | |
| 420 */ | |
| 421 | |
| 422 switch(wanted) { | |
| 423 case 0: | |
| 424 if(running == 32) { | |
| 425 dmpath = getenv("LD_LIBRARY_PATH_32"); | |
| 426 wanted = 32; | |
| 427 } | |
| 428 else { | |
| 429 dmpath = getenv("LD_LIBRARY_PATH_64"); | |
| 430 wanted = 64; | |
| 431 } | |
| 432 break; | |
| 433 | |
| 434 case 32: | |
| 435 dmpath = getenv("LD_LIBRARY_PATH_32"); | |
| 436 break; | |
| 437 | |
| 438 case 64: | |
| 439 dmpath = getenv("LD_LIBRARY_PATH_64"); | |
| 440 break; | |
| 441 | |
| 442 default: | |
| 443 fprintf(stderr, "Improper value at line %d.", __LINE__); | |
| 444 exit(1); /* unknown value in wanted */ | |
| 445 break; | |
| 446 } | |
| 447 | |
| 448 /* | |
| 449 * If dmpath is NULL, the relevant data model specific variable is | |
| 450 * not set and normal LD_LIBRARY_PATH should be used. | |
| 451 */ | |
| 452 if( dmpath == NULL) { | |
| 453 runpath = getenv("LD_LIBRARY_PATH"); | |
| 454 } | |
| 455 else { | |
| 456 runpath = dmpath; | |
| 457 } | |
| 458 #else | |
| 459 /* | |
| 460 * If not on Solaris, assume only a single LD_LIBRARY_PATH | |
| 461 * variable. | |
| 462 */ | |
| 463 runpath = getenv("LD_LIBRARY_PATH"); | |
| 464 #endif /* __sun */ | |
| 465 | |
| 466 #ifdef __linux | |
| 467 /* | |
| 468 * On linux, if a binary is running as sgid or suid, glibc sets | |
| 469 * LD_LIBRARY_PATH to the empty string for security purposes. (In | |
| 470 * contrast, on Solaris the LD_LIBRARY_PATH variable for a | |
| 471 * privileged binary does not lose its settings; but the dynamic | |
| 472 * linker does apply more scrutiny to the path.) The launcher uses | |
| 473 * the value of LD_LIBRARY_PATH to prevent an exec loop. | |
| 474 * Therefore, if we are running sgid or suid, this function's | |
| 475 * setting of LD_LIBRARY_PATH will be ineffective and we should | |
| 476 * return from the function now. Getting the right libraries to | |
| 477 * be found must be handled through other mechanisms. | |
| 478 */ | |
| 479 if((getgid() != getegid()) || (getuid() != geteuid()) ) { | |
| 480 return; | |
| 481 } | |
| 482 #endif | |
| 483 | |
| 484 /* runpath contains current effective LD_LIBRARY_PATH setting */ | |
| 485 | |
| 486 jvmpath = strdup(jvmpath); | |
| 487 new_runpath = MemAlloc( ((runpath!=NULL)?strlen(runpath):0) + | |
| 488 2*strlen(jrepath) + 2*strlen(arch) + | |
| 489 strlen(jvmpath) + 52); | |
| 490 newpath = new_runpath + strlen("LD_LIBRARY_PATH="); | |
| 491 | |
| 492 | |
| 493 /* | |
| 494 * Create desired LD_LIBRARY_PATH value for target data model. | |
| 495 */ | |
| 496 { | |
| 497 /* remove the name of the .so from the JVM path */ | |
| 498 lastslash = strrchr(jvmpath, '/'); | |
| 499 if (lastslash) | |
| 500 *lastslash = '\0'; | |
| 501 | |
| 502 | |
| 503 /* jvmpath, ((running != wanted)?((wanted==64)?"/"BIG_ARCH:"/.."):""), */ | |
| 504 | |
| 505 sprintf(new_runpath, "LD_LIBRARY_PATH=" | |
| 506 "%s:" | |
| 507 "%s/lib/%s:" | |
| 508 "%s/../lib/%s", | |
| 509 jvmpath, | |
| 510 #ifdef DUAL_MODE | |
| 511 jrepath, ((wanted==64)?BIG_ARCH:SMALL_ARCH), | |
| 512 jrepath, ((wanted==64)?BIG_ARCH:SMALL_ARCH) | |
| 513 #else | |
| 514 jrepath, arch, | |
| 515 jrepath, arch | |
| 516 #endif | |
| 517 ); | |
| 518 | |
| 519 | |
| 520 /* | |
| 521 * Check to make sure that the prefix of the current path is the | |
| 522 * desired environment variable setting. | |
| 523 */ | |
| 524 if (runpath != NULL && | |
| 525 strncmp(newpath, runpath, strlen(newpath))==0 && | |
| 526 (runpath[strlen(newpath)] == 0 || runpath[strlen(newpath)] == ':') && | |
| 527 (running == wanted) /* data model does not have to be changed */ | |
| 528 #ifdef __sun | |
| 529 && (dmpath == NULL) /* data model specific variables not set */ | |
| 530 #endif | |
| 531 ) { | |
| 532 | |
| 533 return; | |
| 534 | |
| 535 } | |
| 536 } | |
| 537 | |
| 538 /* | |
| 539 * Place the desired environment setting onto the prefix of | |
| 540 * LD_LIBRARY_PATH. Note that this prevents any possible infinite | |
| 541 * loop of execv() because we test for the prefix, above. | |
| 542 */ | |
| 543 if (runpath != 0) { | |
| 544 strcat(new_runpath, ":"); | |
| 545 strcat(new_runpath, runpath); | |
| 546 } | |
| 547 | |
| 548 if( putenv(new_runpath) != 0) { | |
| 549 exit(1); /* problem allocating memory; LD_LIBRARY_PATH not set | |
| 550 properly */ | |
| 551 } | |
| 552 | |
| 553 /* | |
| 554 * Unix systems document that they look at LD_LIBRARY_PATH only | |
| 555 * once at startup, so we have to re-exec the current executable | |
| 556 * to get the changed environment variable to have an effect. | |
| 557 */ | |
| 558 | |
| 559 #ifdef __sun | |
| 560 /* | |
| 561 * If dmpath is not NULL, remove the data model specific string | |
| 562 * in the environment for the exec'ed child. | |
| 563 */ | |
| 564 | |
| 565 if( dmpath != NULL) | |
| 566 (void)UnsetEnv((wanted==32)?"LD_LIBRARY_PATH_32":"LD_LIBRARY_PATH_64"); | |
| 567 #endif | |
| 568 | |
| 569 newenvp = environ; | |
| 570 | |
| 571 { | |
| 572 char *newexec = execname; | |
| 573 #ifdef DUAL_MODE | |
| 574 /* | |
| 575 * If the data model is being changed, the path to the | |
| 576 * executable must be updated accordingly; the executable name | |
| 577 * and directory the executable resides in are separate. In the | |
| 578 * case of 32 => 64, the new bits are assumed to reside in, e.g. | |
| 579 * "olddir/BIGARCH/execname"; in the case of 64 => 32, | |
| 580 * the bits are assumed to be in "olddir/../execname". For example, | |
| 581 * | |
| 582 * olddir/sparcv9/execname | |
| 583 * olddir/amd64/execname | |
| 584 * | |
| 585 * for Solaris SPARC and Linux amd64, respectively. | |
| 586 */ | |
| 587 | |
| 588 if (running != wanted) { | |
| 589 char *oldexec = strcpy(MemAlloc(strlen(execname) + 1), execname); | |
| 590 char *olddir = oldexec; | |
| 591 char *oldbase = strrchr(oldexec, '/'); | |
| 592 | |
| 593 | |
| 594 newexec = MemAlloc(strlen(execname) + 20); | |
| 595 *oldbase++ = 0; | |
| 596 sprintf(newexec, "%s/%s/%s", olddir, | |
| 597 ((wanted==64) ? BIG_ARCH : ".."), oldbase); | |
| 598 argv[0] = newexec; | |
| 599 } | |
| 600 #endif | |
| 601 | |
| 602 execve(newexec, argv, newenvp); | |
| 603 perror("execve()"); | |
| 604 | |
| 605 fprintf(stderr, "Error trying to exec %s.\n", newexec); | |
| 606 fprintf(stderr, "Check if file exists and permissions are set correctly.\n"); | |
| 607 | |
| 608 #ifdef DUAL_MODE | |
| 609 if (running != wanted) { | |
| 610 fprintf(stderr, "Failed to start a %d-bit JVM process from a %d-bit JVM.\n", | |
| 611 wanted, running); | |
| 612 # ifdef __sun | |
| 613 | |
| 614 # ifdef __sparc | |
| 615 fprintf(stderr, "Verify all necessary J2SE components have been installed.\n" ); | |
| 616 fprintf(stderr, | |
| 617 "(Solaris SPARC 64-bit components must be installed after 32-bit components.)\n" ); | |
| 618 # else | |
| 619 fprintf(stderr, "Either 64-bit processes are not supported by this platform\n"); | |
| 620 fprintf(stderr, "or the 64-bit components have not been installed.\n"); | |
| 621 # endif | |
| 622 } | |
| 623 # endif | |
| 624 #endif | |
| 625 | |
| 626 } | |
| 627 | |
| 628 exit(1); | |
| 629 } | |
| 630 | |
| 631 #else /* ifndef GAMMA */ | |
| 632 | |
| 633 /* gamma launcher is simpler in that it doesn't handle VM flavors, data */ | |
| 634 /* model, LD_LIBRARY_PATH, etc. Assuming everything is set-up correctly */ | |
| 635 /* all we need to do here is to return correct path names. See also */ | |
| 636 /* GetJVMPath() and GetApplicationHome(). */ | |
| 637 | |
| 638 { char *arch = (char *)GetArch(); /* like sparc or sparcv9 */ | |
| 639 char *p; | |
| 640 | |
| 641 if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) { | |
| 642 fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n"); | |
| 643 exit(2); | |
| 644 } | |
| 645 | |
| 646 if (!GetJVMPath(jrepath, NULL, jvmpath, so_jvmpath, arch )) { | |
| 647 fprintf(stderr, "Error: no JVM at `%s'.\n", jvmpath); | |
| 648 exit(4); | |
| 649 } | |
| 650 } | |
| 651 | |
| 652 #endif /* ifndef GAMMA */ | |
| 653 } | |
| 654 | |
| 655 | |
| 656 /* | |
| 657 * On Solaris VM choosing is done by the launcher (java.c). | |
| 658 */ | |
| 659 static jboolean | |
| 660 GetJVMPath(const char *jrepath, const char *jvmtype, | |
| 661 char *jvmpath, jint jvmpathsize, char * arch) | |
| 662 { | |
| 663 struct stat s; | |
| 664 | |
| 665 #ifndef GAMMA | |
| 666 if (strchr(jvmtype, '/')) { | |
| 667 sprintf(jvmpath, "%s/" JVM_DLL, jvmtype); | |
| 668 } else { | |
| 669 sprintf(jvmpath, "%s/lib/%s/%s/" JVM_DLL, jrepath, arch, jvmtype); | |
| 670 } | |
| 671 #else | |
| 672 /* For gamma launcher, JVM is either built-in or in the same directory. */ | |
| 673 /* Either way we return "<exe_path>/libjvm.so" where <exe_path> is the */ | |
| 674 /* directory where gamma launcher is located. */ | |
| 675 | |
| 676 char *p; | |
| 677 | |
| 678 snprintf(jvmpath, jvmpathsize, "%s", GetExecname()); | |
| 679 p = strrchr(jvmpath, '/'); | |
| 680 if (p) { | |
| 681 /* replace executable name with libjvm.so */ | |
| 682 snprintf(p + 1, jvmpathsize - (p + 1 - jvmpath), "%s", JVM_DLL); | |
| 683 } else { | |
| 684 /* this case shouldn't happen */ | |
| 685 snprintf(jvmpath, jvmpathsize, "%s", JVM_DLL); | |
| 686 } | |
| 687 #endif | |
| 688 | |
| 689 if (_launcher_debug) | |
| 690 printf("Does `%s' exist ... ", jvmpath); | |
| 691 | |
| 692 if (stat(jvmpath, &s) == 0) { | |
| 693 if (_launcher_debug) | |
| 694 printf("yes.\n"); | |
| 695 return JNI_TRUE; | |
| 696 } else { | |
| 697 if (_launcher_debug) | |
| 698 printf("no.\n"); | |
| 699 return JNI_FALSE; | |
| 700 } | |
| 701 } | |
| 702 | |
| 703 /* | |
| 704 * Find path to JRE based on .exe's location or registry settings. | |
| 705 */ | |
| 706 static jboolean | |
| 707 GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative) | |
| 708 { | |
| 709 char libjava[MAXPATHLEN]; | |
| 710 | |
| 711 if (GetApplicationHome(path, pathsize)) { | |
| 712 /* Is JRE co-located with the application? */ | |
| 713 sprintf(libjava, "%s/lib/%s/" JAVA_DLL, path, arch); | |
| 714 if (access(libjava, F_OK) == 0) { | |
| 715 goto found; | |
| 716 } | |
| 717 | |
| 718 /* Does the app ship a private JRE in <apphome>/jre directory? */ | |
| 719 sprintf(libjava, "%s/jre/lib/%s/" JAVA_DLL, path, arch); | |
| 720 if (access(libjava, F_OK) == 0) { | |
| 721 strcat(path, "/jre"); | |
| 722 goto found; | |
| 723 } | |
| 724 } | |
| 725 | |
| 726 if (!speculative) | |
| 727 fprintf(stderr, "Error: could not find " JAVA_DLL "\n"); | |
| 728 return JNI_FALSE; | |
| 729 | |
| 730 found: | |
| 731 if (_launcher_debug) | |
| 732 printf("JRE path is %s\n", path); | |
| 733 return JNI_TRUE; | |
| 734 } | |
| 735 | |
| 736 jboolean | |
| 737 LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn) | |
| 738 { | |
| 739 #ifdef GAMMA | |
| 740 /* JVM is directly linked with gamma launcher; no dlopen() */ | |
| 741 ifn->CreateJavaVM = JNI_CreateJavaVM; | |
| 742 ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs; | |
| 743 return JNI_TRUE; | |
| 744 #else | |
| 745 Dl_info dlinfo; | |
| 746 void *libjvm; | |
| 747 | |
| 748 if (_launcher_debug) { | |
| 749 printf("JVM path is %s\n", jvmpath); | |
| 750 } | |
| 751 | |
| 752 libjvm = dlopen(jvmpath, RTLD_NOW + RTLD_GLOBAL); | |
| 753 if (libjvm == NULL) { | |
| 754 #if defined(__sparc) && !defined(_LP64) /* i.e. 32-bit sparc */ | |
| 755 FILE * fp; | |
| 756 Elf32_Ehdr elf_head; | |
| 757 int count; | |
| 758 int location; | |
| 759 | |
| 760 fp = fopen(jvmpath, "r"); | |
| 761 if(fp == NULL) | |
| 762 goto error; | |
| 763 | |
| 764 /* read in elf header */ | |
| 765 count = fread((void*)(&elf_head), sizeof(Elf32_Ehdr), 1, fp); | |
| 766 fclose(fp); | |
| 767 if(count < 1) | |
| 768 goto error; | |
| 769 | |
| 770 /* | |
| 771 * Check for running a server vm (compiled with -xarch=v8plus) | |
| 772 * on a stock v8 processor. In this case, the machine type in | |
| 773 * the elf header would not be included the architecture list | |
| 774 * provided by the isalist command, which is turn is gotten from | |
| 775 * sysinfo. This case cannot occur on 64-bit hardware and thus | |
| 776 * does not have to be checked for in binaries with an LP64 data | |
| 777 * model. | |
| 778 */ | |
| 779 if(elf_head.e_machine == EM_SPARC32PLUS) { | |
| 780 char buf[257]; /* recommended buffer size from sysinfo man | |
| 781 page */ | |
| 782 long length; | |
| 783 char* location; | |
| 784 | |
| 785 length = sysinfo(SI_ISALIST, buf, 257); | |
| 786 if(length > 0) { | |
| 787 location = strstr(buf, "sparcv8plus "); | |
| 788 if(location == NULL) { | |
| 789 fprintf(stderr, "SPARC V8 processor detected; Server compiler requires V9 or better.\n"); | |
| 790 fprintf(stderr, "Use Client compiler on V8 processors.\n"); | |
| 791 fprintf(stderr, "Could not create the Java virtual machine.\n"); | |
| 792 return JNI_FALSE; | |
| 793 } | |
| 794 } | |
| 795 } | |
| 796 #endif | |
| 797 fprintf(stderr, "dl failure on line %d", __LINE__); | |
| 798 goto error; | |
| 799 } | |
| 800 | |
| 801 ifn->CreateJavaVM = (CreateJavaVM_t) | |
| 802 dlsym(libjvm, "JNI_CreateJavaVM"); | |
| 803 if (ifn->CreateJavaVM == NULL) | |
| 804 goto error; | |
| 805 | |
| 806 ifn->GetDefaultJavaVMInitArgs = (GetDefaultJavaVMInitArgs_t) | |
| 807 dlsym(libjvm, "JNI_GetDefaultJavaVMInitArgs"); | |
| 808 if (ifn->GetDefaultJavaVMInitArgs == NULL) | |
| 809 goto error; | |
| 810 | |
| 811 return JNI_TRUE; | |
| 812 | |
| 813 error: | |
| 814 fprintf(stderr, "Error: failed %s, because %s\n", jvmpath, dlerror()); | |
| 815 return JNI_FALSE; | |
| 816 #endif /* GAMMA */ | |
| 817 } | |
| 818 | |
| 819 /* | |
| 820 * Get the path to the file that has the usage message for -X options. | |
| 821 */ | |
| 822 void | |
| 823 GetXUsagePath(char *buf, jint bufsize) | |
| 824 { | |
| 825 static const char Xusage_txt[] = "/Xusage.txt"; | |
| 826 Dl_info dlinfo; | |
| 827 | |
| 828 /* we use RTLD_NOW because of problems with ld.so.1 and green threads */ | |
| 829 dladdr(dlsym(dlopen(JVM_DLL, RTLD_NOW), "JNI_CreateJavaVM"), &dlinfo); | |
| 830 strncpy(buf, (char *)dlinfo.dli_fname, bufsize - sizeof(Xusage_txt)); | |
| 831 | |
| 832 buf[bufsize-1] = '\0'; | |
| 833 strcpy(strrchr(buf, '/'), Xusage_txt); | |
| 834 } | |
| 835 | |
| 836 /* | |
| 837 * If app is "/foo/bin/javac", or "/foo/bin/sparcv9/javac" then put | |
| 838 * "/foo" into buf. | |
| 839 */ | |
| 840 jboolean | |
| 841 GetApplicationHome(char *buf, jint bufsize) | |
| 842 { | |
| 843 #ifdef __linux__ | |
| 844 char *execname = GetExecname(); | |
| 845 if (execname) { | |
| 846 strncpy(buf, execname, bufsize-1); | |
| 847 buf[bufsize-1] = '\0'; | |
| 848 } else { | |
| 849 return JNI_FALSE; | |
| 850 } | |
| 851 #else | |
| 852 Dl_info dlinfo; | |
| 853 | |
| 854 dladdr((void *)GetApplicationHome, &dlinfo); | |
| 855 if (realpath(dlinfo.dli_fname, buf) == NULL) { | |
| 856 fprintf(stderr, "Error: realpath(`%s') failed.\n", dlinfo.dli_fname); | |
| 857 return JNI_FALSE; | |
| 858 } | |
| 859 #endif | |
| 860 | |
| 861 #ifdef GAMMA | |
| 862 { | |
| 863 /* gamma launcher uses JAVA_HOME environment variable to find JDK/JRE */ | |
| 864 char* java_home_var = getenv("JAVA_HOME"); | |
| 865 if (java_home_var == NULL) { | |
| 866 printf("JAVA_HOME must point to a valid JDK/JRE to run gamma\n"); | |
| 867 return JNI_FALSE; | |
| 868 } | |
| 869 snprintf(buf, bufsize, "%s", java_home_var); | |
| 870 } | |
| 871 #else | |
| 872 if (strrchr(buf, '/') == 0) { | |
| 873 buf[0] = '\0'; | |
| 874 return JNI_FALSE; | |
| 875 } | |
| 876 *(strrchr(buf, '/')) = '\0'; /* executable file */ | |
| 877 if (strlen(buf) < 4 || strrchr(buf, '/') == 0) { | |
| 878 buf[0] = '\0'; | |
| 879 return JNI_FALSE; | |
| 880 } | |
| 881 if (strcmp("/bin", buf + strlen(buf) - 4) != 0) | |
| 882 *(strrchr(buf, '/')) = '\0'; /* sparcv9 or amd64 */ | |
| 883 if (strlen(buf) < 4 || strcmp("/bin", buf + strlen(buf) - 4) != 0) { | |
| 884 buf[0] = '\0'; | |
| 885 return JNI_FALSE; | |
| 886 } | |
| 887 *(strrchr(buf, '/')) = '\0'; /* bin */ | |
| 888 #endif /* GAMMA */ | |
| 889 | |
| 890 return JNI_TRUE; | |
| 891 } | |
| 892 | |
| 893 | |
| 894 /* | |
| 895 * Return true if the named program exists | |
| 896 */ | |
| 897 static int | |
| 898 ProgramExists(char *name) | |
| 899 { | |
| 900 struct stat sb; | |
| 901 if (stat(name, &sb) != 0) return 0; | |
| 902 if (S_ISDIR(sb.st_mode)) return 0; | |
| 903 return (sb.st_mode & S_IEXEC) != 0; | |
| 904 } | |
| 905 | |
| 906 | |
| 907 /* | |
| 908 * Find a command in a directory, returning the path. | |
| 909 */ | |
| 910 static char * | |
| 911 Resolve(char *indir, char *cmd) | |
| 912 { | |
| 913 char name[PATH_MAX + 2], *real; | |
| 914 | |
| 915 if ((strlen(indir) + strlen(cmd) + 1) > PATH_MAX) return 0; | |
| 916 sprintf(name, "%s%c%s", indir, FILE_SEPARATOR, cmd); | |
| 917 if (!ProgramExists(name)) return 0; | |
| 918 real = MemAlloc(PATH_MAX + 2); | |
| 919 if (!realpath(name, real)) | |
| 920 strcpy(real, name); | |
| 921 return real; | |
| 922 } | |
| 923 | |
| 924 | |
| 925 /* | |
| 926 * Find a path for the executable | |
| 927 */ | |
| 928 static char * | |
| 929 FindExecName(char *program) | |
| 930 { | |
| 931 char cwdbuf[PATH_MAX+2]; | |
| 932 char *path; | |
| 933 char *tmp_path; | |
| 934 char *f; | |
| 935 char *result = NULL; | |
| 936 | |
| 937 /* absolute path? */ | |
| 938 if (*program == FILE_SEPARATOR || | |
| 939 (FILE_SEPARATOR=='\\' && strrchr(program, ':'))) | |
| 940 return Resolve("", program+1); | |
| 941 | |
| 942 /* relative path? */ | |
| 943 if (strrchr(program, FILE_SEPARATOR) != 0) { | |
| 944 char buf[PATH_MAX+2]; | |
| 945 return Resolve(getcwd(cwdbuf, sizeof(cwdbuf)), program); | |
| 946 } | |
| 947 | |
| 948 /* from search path? */ | |
| 949 path = getenv("PATH"); | |
| 950 if (!path || !*path) path = "."; | |
| 951 tmp_path = MemAlloc(strlen(path) + 2); | |
| 952 strcpy(tmp_path, path); | |
| 953 | |
| 954 for (f=tmp_path; *f && result==0; ) { | |
| 955 char *s = f; | |
| 956 while (*f && (*f != PATH_SEPARATOR)) ++f; | |
| 957 if (*f) *f++ = 0; | |
| 958 if (*s == FILE_SEPARATOR) | |
| 959 result = Resolve(s, program); | |
| 960 else { | |
| 961 /* relative path element */ | |
| 962 char dir[2*PATH_MAX]; | |
| 963 sprintf(dir, "%s%c%s", getcwd(cwdbuf, sizeof(cwdbuf)), | |
| 964 FILE_SEPARATOR, s); | |
| 965 result = Resolve(dir, program); | |
| 966 } | |
| 967 if (result != 0) break; | |
| 968 } | |
| 969 | |
| 970 free(tmp_path); | |
| 971 return result; | |
| 972 } | |
| 973 | |
| 974 | |
| 975 /* Store the name of the executable once computed */ | |
| 976 static char *execname = NULL; | |
| 977 | |
| 978 /* | |
| 979 * Compute the name of the executable | |
| 980 * | |
| 981 * In order to re-exec securely we need the absolute path of the | |
| 982 * executable. On Solaris getexecname(3c) may not return an absolute | |
| 983 * path so we use dladdr to get the filename of the executable and | |
| 984 * then use realpath to derive an absolute path. From Solaris 9 | |
| 985 * onwards the filename returned in DL_info structure from dladdr is | |
| 986 * an absolute pathname so technically realpath isn't required. | |
| 987 * On Linux we read the executable name from /proc/self/exe. | |
| 988 * As a fallback, and for platforms other than Solaris and Linux, | |
| 989 * we use FindExecName to compute the executable name. | |
| 990 */ | |
| 991 static char * | |
| 992 SetExecname(char **argv) | |
| 993 { | |
| 994 char* exec_path = NULL; | |
| 995 | |
| 996 if (execname != NULL) /* Already determined */ | |
| 997 return (execname); | |
| 998 | |
| 999 #if defined(__sun) | |
| 1000 { | |
| 1001 Dl_info dlinfo; | |
| 1002 if (dladdr((void*)&SetExecname, &dlinfo)) { | |
| 1003 char *resolved = (char*)MemAlloc(PATH_MAX+1); | |
| 1004 if (resolved != NULL) { | |
| 1005 exec_path = realpath(dlinfo.dli_fname, resolved); | |
| 1006 if (exec_path == NULL) { | |
| 1007 free(resolved); | |
| 1008 } | |
| 1009 } | |
| 1010 } | |
| 1011 } | |
| 1012 #elif defined(__linux__) | |
| 1013 { | |
| 1014 const char* self = "/proc/self/exe"; | |
| 1015 char buf[PATH_MAX+1]; | |
| 1016 int len = readlink(self, buf, PATH_MAX); | |
| 1017 if (len >= 0) { | |
| 1018 buf[len] = '\0'; /* readlink doesn't nul terminate */ | |
| 1019 exec_path = strdup(buf); | |
| 1020 } | |
| 1021 } | |
| 1022 #else /* !__sun && !__linux */ | |
| 1023 { | |
| 1024 /* Not implemented */ | |
| 1025 } | |
| 1026 #endif | |
| 1027 | |
| 1028 if (exec_path == NULL) { | |
| 1029 exec_path = FindExecName(argv[0]); | |
| 1030 } | |
| 1031 execname = exec_path; | |
| 1032 return exec_path; | |
| 1033 } | |
| 1034 | |
| 1035 /* | |
| 1036 * Return the name of the executable. Used in java_md.c to find the JRE area. | |
| 1037 */ | |
| 1038 static char * | |
| 1039 GetExecname() { | |
| 1040 return execname; | |
| 1041 } | |
| 1042 | |
| 1043 void ReportErrorMessage(char * message, jboolean always) { | |
| 1044 if (always) { | |
| 1045 fprintf(stderr, "%s\n", message); | |
| 1046 } | |
| 1047 } | |
| 1048 | |
| 1049 void ReportErrorMessage2(char * format, char * string, jboolean always) { | |
| 1050 if (always) { | |
| 1051 fprintf(stderr, format, string); | |
| 1052 fprintf(stderr, "\n"); | |
| 1053 } | |
| 1054 } | |
| 1055 | |
| 1056 void ReportExceptionDescription(JNIEnv * env) { | |
| 1057 (*env)->ExceptionDescribe(env); | |
| 1058 } | |
| 1059 | |
| 1060 /* | |
| 1061 * Return JNI_TRUE for an option string that has no effect but should | |
| 1062 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On | |
| 1063 * Solaris SPARC, this screening needs to be done if: | |
| 1064 * 1) LD_LIBRARY_PATH does _not_ need to be reset and | |
| 1065 * 2) -d32 or -d64 is passed to a binary with a matching data model | |
| 1066 * (the exec in SetLibraryPath removes -d<n> options and points the | |
| 1067 * exec to the proper binary). When this exec is not done, these options | |
| 1068 * would end up getting passed onto the vm. | |
| 1069 */ | |
| 1070 jboolean RemovableMachineDependentOption(char * option) { | |
| 1071 /* | |
| 1072 * Unconditionally remove both -d32 and -d64 options since only | |
| 1073 * the last such options has an effect; e.g. | |
| 1074 * java -d32 -d64 -d32 -version | |
| 1075 * is equivalent to | |
| 1076 * java -d32 -version | |
| 1077 */ | |
| 1078 | |
| 1079 if( (strcmp(option, "-d32") == 0 ) || | |
| 1080 (strcmp(option, "-d64") == 0 )) | |
| 1081 return JNI_TRUE; | |
| 1082 else | |
| 1083 return JNI_FALSE; | |
| 1084 } | |
| 1085 | |
| 1086 void PrintMachineDependentOptions() { | |
| 1087 fprintf(stdout, | |
| 1088 " -d32 use a 32-bit data model if available\n" | |
| 1089 "\n" | |
| 1090 " -d64 use a 64-bit data model if available\n"); | |
| 1091 return; | |
| 1092 } | |
| 1093 | |
| 1094 #ifndef GAMMA /* gamma launcher does not have ergonomics */ | |
| 1095 | |
| 1096 /* | |
| 1097 * The following methods (down to ServerClassMachine()) answer | |
| 1098 * the question about whether a machine is a "server-class" | |
| 1099 * machine. A server-class machine is loosely defined as one | |
| 1100 * with 2 or more processors and 2 gigabytes or more physical | |
| 1101 * memory. The definition of a processor is a physical package, | |
| 1102 * not a hyperthreaded chip masquerading as a multi-processor. | |
| 1103 * The definition of memory is also somewhat fuzzy, since x86 | |
| 1104 * machines seem not to report all the memory in their DIMMs, we | |
| 1105 * think because of memory mapping of graphics cards, etc. | |
| 1106 * | |
| 1107 * This code is somewhat more confused with #ifdef's than we'd | |
| 1108 * like because this file is used by both Solaris and Linux | |
| 1109 * platforms, and so needs to be parameterized for SPARC and | |
| 1110 * i586 hardware. The other Linux platforms (amd64 and ia64) | |
| 1111 * don't even ask this question, because they only come with | |
| 1112 * server JVMs. */ | |
| 1113 | |
| 1114 # define KB (1024UL) | |
| 1115 # define MB (1024UL * KB) | |
| 1116 # define GB (1024UL * MB) | |
| 1117 | |
| 1118 /* Compute physical memory by asking the OS */ | |
| 1119 uint64_t | |
| 1120 physical_memory(void) { | |
| 1121 const uint64_t pages = (uint64_t) sysconf(_SC_PHYS_PAGES); | |
| 1122 const uint64_t page_size = (uint64_t) sysconf(_SC_PAGESIZE); | |
| 1123 const uint64_t result = pages * page_size; | |
| 1124 # define UINT64_FORMAT "%" PRIu64 | |
| 1125 | |
| 1126 if (_launcher_debug) { | |
| 1127 printf("pages: " UINT64_FORMAT | |
| 1128 " page_size: " UINT64_FORMAT | |
| 1129 " physical memory: " UINT64_FORMAT " (%.3fGB)\n", | |
| 1130 pages, page_size, result, result / (double) GB); | |
| 1131 } | |
| 1132 return result; | |
| 1133 } | |
| 1134 | |
| 1135 #if defined(__sun) && defined(__sparc) | |
| 1136 | |
| 1137 /* Methods for solaris-sparc: these are easy. */ | |
| 1138 | |
| 1139 /* Ask the OS how many processors there are. */ | |
| 1140 unsigned long | |
| 1141 physical_processors(void) { | |
| 1142 const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF); | |
| 1143 | |
| 1144 if (_launcher_debug) { | |
| 1145 printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors); | |
| 1146 } | |
| 1147 return sys_processors; | |
| 1148 } | |
| 1149 | |
| 1150 /* The solaris-sparc version of the "server-class" predicate. */ | |
| 1151 jboolean | |
| 1152 solaris_sparc_ServerClassMachine(void) { | |
| 1153 jboolean result = JNI_FALSE; | |
| 1154 /* How big is a server class machine? */ | |
| 1155 const unsigned long server_processors = 2UL; | |
| 1156 const uint64_t server_memory = 2UL * GB; | |
| 1157 const uint64_t actual_memory = physical_memory(); | |
| 1158 | |
| 1159 /* Is this a server class machine? */ | |
| 1160 if (actual_memory >= server_memory) { | |
| 1161 const unsigned long actual_processors = physical_processors(); | |
| 1162 if (actual_processors >= server_processors) { | |
| 1163 result = JNI_TRUE; | |
| 1164 } | |
| 1165 } | |
| 1166 if (_launcher_debug) { | |
| 1167 printf("solaris_" ARCH "_ServerClassMachine: %s\n", | |
| 1168 (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE")); | |
| 1169 } | |
| 1170 return result; | |
| 1171 } | |
| 1172 | |
| 1173 #endif /* __sun && __sparc */ | |
| 1174 | |
| 1175 #if defined(__sun) && defined(i586) | |
| 1176 | |
| 1177 /* | |
| 1178 * A utility method for asking the CPU about itself. | |
| 1179 * There's a corresponding version of linux-i586 | |
| 1180 * because the compilers are different. | |
| 1181 */ | |
| 1182 void | |
| 1183 get_cpuid(uint32_t arg, | |
| 1184 uint32_t* eaxp, | |
| 1185 uint32_t* ebxp, | |
| 1186 uint32_t* ecxp, | |
| 1187 uint32_t* edxp) { | |
| 1188 #ifdef _LP64 | |
| 1189 asm( | |
| 1190 /* rbx is a callee-saved register */ | |
| 1191 " movq %rbx, %r11 \n" | |
| 1192 /* rdx and rcx are 3rd and 4th argument registers */ | |
| 1193 " movq %rdx, %r10 \n" | |
| 1194 " movq %rcx, %r9 \n" | |
| 1195 " movl %edi, %eax \n" | |
| 1196 " cpuid \n" | |
| 1197 " movl %eax, (%rsi)\n" | |
| 1198 " movl %ebx, (%r10)\n" | |
| 1199 " movl %ecx, (%r9) \n" | |
| 1200 " movl %edx, (%r8) \n" | |
| 1201 /* Restore rbx */ | |
| 1202 " movq %r11, %rbx"); | |
| 1203 #else | |
| 1204 /* EBX is a callee-saved register */ | |
| 1205 asm(" pushl %ebx"); | |
| 1206 /* Need ESI for storing through arguments */ | |
| 1207 asm(" pushl %esi"); | |
| 1208 asm(" movl 8(%ebp), %eax \n" | |
| 1209 " cpuid \n" | |
| 1210 " movl 12(%ebp), %esi \n" | |
| 1211 " movl %eax, (%esi) \n" | |
| 1212 " movl 16(%ebp), %esi \n" | |
| 1213 " movl %ebx, (%esi) \n" | |
| 1214 " movl 20(%ebp), %esi \n" | |
| 1215 " movl %ecx, (%esi) \n" | |
| 1216 " movl 24(%ebp), %esi \n" | |
| 1217 " movl %edx, (%esi) "); | |
| 1218 /* Restore ESI and EBX */ | |
| 1219 asm(" popl %esi"); | |
| 1220 /* Restore EBX */ | |
| 1221 asm(" popl %ebx"); | |
| 1222 #endif | |
| 1223 } | |
| 1224 | |
| 1225 #endif /* __sun && i586 */ | |
| 1226 | |
| 1227 #if defined(__linux__) && defined(i586) | |
| 1228 | |
| 1229 /* | |
| 1230 * A utility method for asking the CPU about itself. | |
| 1231 * There's a corresponding version of solaris-i586 | |
| 1232 * because the compilers are different. | |
| 1233 */ | |
| 1234 void | |
| 1235 get_cpuid(uint32_t arg, | |
| 1236 uint32_t* eaxp, | |
| 1237 uint32_t* ebxp, | |
| 1238 uint32_t* ecxp, | |
| 1239 uint32_t* edxp) { | |
| 1240 #ifdef _LP64 | |
| 1241 __asm__ volatile (/* Instructions */ | |
| 1242 " movl %4, %%eax \n" | |
| 1243 " cpuid \n" | |
| 1244 " movl %%eax, (%0)\n" | |
| 1245 " movl %%ebx, (%1)\n" | |
| 1246 " movl %%ecx, (%2)\n" | |
| 1247 " movl %%edx, (%3)\n" | |
| 1248 : /* Outputs */ | |
| 1249 : /* Inputs */ | |
| 1250 "r" (eaxp), | |
| 1251 "r" (ebxp), | |
| 1252 "r" (ecxp), | |
| 1253 "r" (edxp), | |
| 1254 "r" (arg) | |
| 1255 : /* Clobbers */ | |
| 1256 "%rax", "%rbx", "%rcx", "%rdx", "memory" | |
| 1257 ); | |
| 1258 #else | |
| 1259 uint32_t value_of_eax = 0; | |
| 1260 uint32_t value_of_ebx = 0; | |
| 1261 uint32_t value_of_ecx = 0; | |
| 1262 uint32_t value_of_edx = 0; | |
| 1263 __asm__ volatile (/* Instructions */ | |
| 1264 /* ebx is callee-save, so push it */ | |
| 1265 /* even though it's in the clobbers section */ | |
| 1266 " pushl %%ebx \n" | |
| 1267 " movl %4, %%eax \n" | |
| 1268 " cpuid \n" | |
| 1269 " movl %%eax, %0 \n" | |
| 1270 " movl %%ebx, %1 \n" | |
| 1271 " movl %%ecx, %2 \n" | |
| 1272 " movl %%edx, %3 \n" | |
| 1273 /* restore ebx */ | |
| 1274 " popl %%ebx \n" | |
| 1275 | |
| 1276 : /* Outputs */ | |
| 1277 "=m" (value_of_eax), | |
| 1278 "=m" (value_of_ebx), | |
| 1279 "=m" (value_of_ecx), | |
| 1280 "=m" (value_of_edx) | |
| 1281 : /* Inputs */ | |
| 1282 "m" (arg) | |
| 1283 : /* Clobbers */ | |
| 1284 "%eax", "%ebx", "%ecx", "%edx" | |
| 1285 ); | |
| 1286 *eaxp = value_of_eax; | |
| 1287 *ebxp = value_of_ebx; | |
| 1288 *ecxp = value_of_ecx; | |
| 1289 *edxp = value_of_edx; | |
| 1290 #endif | |
| 1291 } | |
| 1292 | |
| 1293 #endif /* __linux__ && i586 */ | |
| 1294 | |
| 1295 #ifdef i586 | |
| 1296 /* | |
| 1297 * Routines shared by solaris-i586 and linux-i586. | |
| 1298 */ | |
| 1299 | |
| 1300 enum HyperThreadingSupport_enum { | |
| 1301 hts_supported = 1, | |
| 1302 hts_too_soon_to_tell = 0, | |
| 1303 hts_not_supported = -1, | |
| 1304 hts_not_pentium4 = -2, | |
| 1305 hts_not_intel = -3 | |
| 1306 }; | |
| 1307 typedef enum HyperThreadingSupport_enum HyperThreadingSupport; | |
| 1308 | |
| 1309 /* Determine if hyperthreading is supported */ | |
| 1310 HyperThreadingSupport | |
| 1311 hyperthreading_support(void) { | |
| 1312 HyperThreadingSupport result = hts_too_soon_to_tell; | |
| 1313 /* Bits 11 through 8 is family processor id */ | |
| 1314 # define FAMILY_ID_SHIFT 8 | |
| 1315 # define FAMILY_ID_MASK 0xf | |
| 1316 /* Bits 23 through 20 is extended family processor id */ | |
| 1317 # define EXT_FAMILY_ID_SHIFT 20 | |
| 1318 # define EXT_FAMILY_ID_MASK 0xf | |
| 1319 /* Pentium 4 family processor id */ | |
| 1320 # define PENTIUM4_FAMILY_ID 0xf | |
| 1321 /* Bit 28 indicates Hyper-Threading Technology support */ | |
| 1322 # define HT_BIT_SHIFT 28 | |
| 1323 # define HT_BIT_MASK 1 | |
| 1324 uint32_t vendor_id[3] = { 0U, 0U, 0U }; | |
| 1325 uint32_t value_of_eax = 0U; | |
| 1326 uint32_t value_of_edx = 0U; | |
| 1327 uint32_t dummy = 0U; | |
| 1328 | |
| 1329 /* Yes, this is supposed to be [0], [2], [1] */ | |
| 1330 get_cpuid(0, &dummy, &vendor_id[0], &vendor_id[2], &vendor_id[1]); | |
| 1331 if (_launcher_debug) { | |
| 1332 printf("vendor: %c %c %c %c %c %c %c %c %c %c %c %c \n", | |
| 1333 ((vendor_id[0] >> 0) & 0xff), | |
| 1334 ((vendor_id[0] >> 8) & 0xff), | |
| 1335 ((vendor_id[0] >> 16) & 0xff), | |
| 1336 ((vendor_id[0] >> 24) & 0xff), | |
| 1337 ((vendor_id[1] >> 0) & 0xff), | |
| 1338 ((vendor_id[1] >> 8) & 0xff), | |
| 1339 ((vendor_id[1] >> 16) & 0xff), | |
| 1340 ((vendor_id[1] >> 24) & 0xff), | |
| 1341 ((vendor_id[2] >> 0) & 0xff), | |
| 1342 ((vendor_id[2] >> 8) & 0xff), | |
| 1343 ((vendor_id[2] >> 16) & 0xff), | |
| 1344 ((vendor_id[2] >> 24) & 0xff)); | |
| 1345 } | |
| 1346 get_cpuid(1, &value_of_eax, &dummy, &dummy, &value_of_edx); | |
| 1347 if (_launcher_debug) { | |
| 1348 printf("value_of_eax: 0x%x value_of_edx: 0x%x\n", | |
| 1349 value_of_eax, value_of_edx); | |
| 1350 } | |
| 1351 if ((((value_of_eax >> FAMILY_ID_SHIFT) & FAMILY_ID_MASK) == PENTIUM4_FAMILY_ID) || | |
| 1352 (((value_of_eax >> EXT_FAMILY_ID_SHIFT) & EXT_FAMILY_ID_MASK) != 0)) { | |
| 1353 if ((((vendor_id[0] >> 0) & 0xff) == 'G') && | |
| 1354 (((vendor_id[0] >> 8) & 0xff) == 'e') && | |
| 1355 (((vendor_id[0] >> 16) & 0xff) == 'n') && | |
| 1356 (((vendor_id[0] >> 24) & 0xff) == 'u') && | |
| 1357 (((vendor_id[1] >> 0) & 0xff) == 'i') && | |
| 1358 (((vendor_id[1] >> 8) & 0xff) == 'n') && | |
| 1359 (((vendor_id[1] >> 16) & 0xff) == 'e') && | |
| 1360 (((vendor_id[1] >> 24) & 0xff) == 'I') && | |
| 1361 (((vendor_id[2] >> 0) & 0xff) == 'n') && | |
| 1362 (((vendor_id[2] >> 8) & 0xff) == 't') && | |
| 1363 (((vendor_id[2] >> 16) & 0xff) == 'e') && | |
| 1364 (((vendor_id[2] >> 24) & 0xff) == 'l')) { | |
| 1365 if (((value_of_edx >> HT_BIT_SHIFT) & HT_BIT_MASK) == HT_BIT_MASK) { | |
| 1366 if (_launcher_debug) { | |
| 1367 printf("Hyperthreading supported\n"); | |
| 1368 } | |
| 1369 result = hts_supported; | |
| 1370 } else { | |
| 1371 if (_launcher_debug) { | |
| 1372 printf("Hyperthreading not supported\n"); | |
| 1373 } | |
| 1374 result = hts_not_supported; | |
| 1375 } | |
| 1376 } else { | |
| 1377 if (_launcher_debug) { | |
| 1378 printf("Not GenuineIntel\n"); | |
| 1379 } | |
| 1380 result = hts_not_intel; | |
| 1381 } | |
| 1382 } else { | |
| 1383 if (_launcher_debug) { | |
| 1384 printf("not Pentium 4 or extended\n"); | |
| 1385 } | |
| 1386 result = hts_not_pentium4; | |
| 1387 } | |
| 1388 return result; | |
| 1389 } | |
| 1390 | |
| 1391 /* Determine how many logical processors there are per CPU */ | |
| 1392 unsigned int | |
| 1393 logical_processors_per_package(void) { | |
| 1394 /* | |
| 1395 * After CPUID with EAX==1, register EBX bits 23 through 16 | |
| 1396 * indicate the number of logical processors per package | |
| 1397 */ | |
| 1398 # define NUM_LOGICAL_SHIFT 16 | |
| 1399 # define NUM_LOGICAL_MASK 0xff | |
| 1400 unsigned int result = 1U; | |
| 1401 const HyperThreadingSupport hyperthreading = hyperthreading_support(); | |
| 1402 | |
| 1403 if (hyperthreading == hts_supported) { | |
| 1404 uint32_t value_of_ebx = 0U; | |
| 1405 uint32_t dummy = 0U; | |
| 1406 | |
| 1407 get_cpuid(1, &dummy, &value_of_ebx, &dummy, &dummy); | |
| 1408 result = (value_of_ebx >> NUM_LOGICAL_SHIFT) & NUM_LOGICAL_MASK; | |
| 1409 if (_launcher_debug) { | |
| 1410 printf("logical processors per package: %u\n", result); | |
| 1411 } | |
| 1412 } | |
| 1413 return result; | |
| 1414 } | |
| 1415 | |
| 1416 /* Compute the number of physical processors, not logical processors */ | |
| 1417 unsigned long | |
| 1418 physical_processors(void) { | |
| 1419 const long sys_processors = sysconf(_SC_NPROCESSORS_CONF); | |
| 1420 unsigned long result = sys_processors; | |
| 1421 | |
| 1422 if (_launcher_debug) { | |
| 1423 printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors); | |
| 1424 } | |
| 1425 if (sys_processors > 1) { | |
| 1426 unsigned int logical_processors = logical_processors_per_package(); | |
| 1427 if (logical_processors > 1) { | |
| 1428 result = (unsigned long) sys_processors / logical_processors; | |
| 1429 } | |
| 1430 } | |
| 1431 if (_launcher_debug) { | |
| 1432 printf("physical processors: %lu\n", result); | |
| 1433 } | |
| 1434 return result; | |
| 1435 } | |
| 1436 | |
| 1437 #endif /* i586 */ | |
| 1438 | |
| 1439 #if defined(__sun) && defined(i586) | |
| 1440 | |
| 1441 /* The definition of a server-class machine for solaris-i586/amd64 */ | |
| 1442 jboolean | |
| 1443 solaris_i586_ServerClassMachine(void) { | |
| 1444 jboolean result = JNI_FALSE; | |
| 1445 /* How big is a server class machine? */ | |
| 1446 const unsigned long server_processors = 2UL; | |
| 1447 const uint64_t server_memory = 2UL * GB; | |
| 1448 /* | |
| 1449 * We seem not to get our full complement of memory. | |
| 1450 * We allow some part (1/8?) of the memory to be "missing", | |
| 1451 * based on the sizes of DIMMs, and maybe graphics cards. | |
| 1452 */ | |
| 1453 const uint64_t missing_memory = 256UL * MB; | |
| 1454 const uint64_t actual_memory = physical_memory(); | |
| 1455 | |
| 1456 /* Is this a server class machine? */ | |
| 1457 if (actual_memory >= (server_memory - missing_memory)) { | |
| 1458 const unsigned long actual_processors = physical_processors(); | |
| 1459 if (actual_processors >= server_processors) { | |
| 1460 result = JNI_TRUE; | |
| 1461 } | |
| 1462 } | |
| 1463 if (_launcher_debug) { | |
| 1464 printf("solaris_" ARCH "_ServerClassMachine: %s\n", | |
| 1465 (result == JNI_TRUE ? "true" : "false")); | |
| 1466 } | |
| 1467 return result; | |
| 1468 } | |
| 1469 | |
| 1470 #endif /* __sun && i586 */ | |
| 1471 | |
| 1472 #if defined(__linux__) && defined(i586) | |
| 1473 | |
| 1474 /* The definition of a server-class machine for linux-i586 */ | |
| 1475 jboolean | |
| 1476 linux_i586_ServerClassMachine(void) { | |
| 1477 jboolean result = JNI_FALSE; | |
| 1478 /* How big is a server class machine? */ | |
| 1479 const unsigned long server_processors = 2UL; | |
| 1480 const uint64_t server_memory = 2UL * GB; | |
| 1481 /* | |
| 1482 * We seem not to get our full complement of memory. | |
| 1483 * We allow some part (1/8?) of the memory to be "missing", | |
| 1484 * based on the sizes of DIMMs, and maybe graphics cards. | |
| 1485 */ | |
| 1486 const uint64_t missing_memory = 256UL * MB; | |
| 1487 const uint64_t actual_memory = physical_memory(); | |
| 1488 | |
| 1489 /* Is this a server class machine? */ | |
| 1490 if (actual_memory >= (server_memory - missing_memory)) { | |
| 1491 const unsigned long actual_processors = physical_processors(); | |
| 1492 if (actual_processors >= server_processors) { | |
| 1493 result = JNI_TRUE; | |
| 1494 } | |
| 1495 } | |
| 1496 if (_launcher_debug) { | |
| 1497 printf("linux_" ARCH "_ServerClassMachine: %s\n", | |
| 1498 (result == JNI_TRUE ? "true" : "false")); | |
| 1499 } | |
| 1500 return result; | |
| 1501 } | |
| 1502 | |
| 1503 #endif /* __linux__ && i586 */ | |
| 1504 | |
| 1505 /* Dispatch to the platform-specific definition of "server-class" */ | |
| 1506 jboolean | |
| 1507 ServerClassMachine(void) { | |
| 1508 jboolean result = JNI_FALSE; | |
| 1509 #if defined(__sun) && defined(__sparc) | |
| 1510 result = solaris_sparc_ServerClassMachine(); | |
| 1511 #elif defined(__sun) && defined(i586) | |
| 1512 result = solaris_i586_ServerClassMachine(); | |
| 1513 #elif defined(__linux__) && defined(i586) | |
| 1514 result = linux_i586_ServerClassMachine(); | |
| 1515 #else | |
| 1516 if (_launcher_debug) { | |
| 1517 printf("ServerClassMachine: returns default value of %s\n", | |
| 1518 (result == JNI_TRUE ? "true" : "false")); | |
| 1519 } | |
| 1520 #endif | |
| 1521 return result; | |
| 1522 } | |
| 1523 | |
| 1524 #endif /* ifndef GAMMA */ | |
| 1525 | |
| 1526 #ifndef GAMMA /* gamma launcher does not choose JDK/JRE/JVM */ | |
| 1527 | |
| 1528 /* | |
| 1529 * Since using the file system as a registry is a bit risky, perform | |
| 1530 * additional sanity checks on the identified directory to validate | |
| 1531 * it as a valid jre/sdk. | |
| 1532 * | |
| 1533 * Return 0 if the tests fail; otherwise return non-zero (true). | |
| 1534 * | |
| 1535 * Note that checking for anything more than the existence of an | |
| 1536 * executable object at bin/java relative to the path being checked | |
| 1537 * will break the regression tests. | |
| 1538 */ | |
| 1539 static int | |
| 1540 CheckSanity(char *path, char *dir) | |
| 1541 { | |
| 1542 char buffer[PATH_MAX]; | |
| 1543 | |
| 1544 if (strlen(path) + strlen(dir) + 11 > PATH_MAX) | |
| 1545 return (0); /* Silently reject "impossibly" long paths */ | |
| 1546 | |
| 1547 (void)strcat(strcat(strcat(strcpy(buffer, path), "/"), dir), "/bin/java"); | |
| 1548 return ((access(buffer, X_OK) == 0) ? 1 : 0); | |
| 1549 } | |
| 1550 | |
| 1551 /* | |
| 1552 * Determine if there is an acceptable JRE in the directory dirname. | |
| 1553 * Upon locating the "best" one, return a fully qualified path to | |
| 1554 * it. "Best" is defined as the most advanced JRE meeting the | |
| 1555 * constraints contained in the manifest_info. If no JRE in this | |
| 1556 * directory meets the constraints, return NULL. | |
| 1557 * | |
| 1558 * Note that we don't check for errors in reading the directory | |
| 1559 * (which would be done by checking errno). This is because it | |
| 1560 * doesn't matter if we get an error reading the directory, or | |
| 1561 * we just don't find anything interesting in the directory. We | |
| 1562 * just return NULL in either case. | |
| 1563 * | |
| 1564 * The historical names of j2sdk and j2re were changed to jdk and | |
| 1565 * jre respecively as part of the 1.5 rebranding effort. Since the | |
| 1566 * former names are legacy on Linux, they must be recognized for | |
| 1567 * all time. Fortunately, this is a minor cost. | |
| 1568 */ | |
| 1569 static char | |
| 1570 *ProcessDir(manifest_info *info, char *dirname) | |
| 1571 { | |
| 1572 DIR *dirp; | |
| 1573 struct dirent *dp; | |
| 1574 char *best = NULL; | |
| 1575 int offset; | |
| 1576 int best_offset = 0; | |
| 1577 char *ret_str = NULL; | |
| 1578 char buffer[PATH_MAX]; | |
| 1579 | |
| 1580 if ((dirp = opendir(dirname)) == NULL) | |
| 1581 return (NULL); | |
| 1582 | |
| 1583 do { | |
| 1584 if ((dp = readdir(dirp)) != NULL) { | |
| 1585 offset = 0; | |
| 1586 if ((strncmp(dp->d_name, "jre", 3) == 0) || | |
| 1587 (strncmp(dp->d_name, "jdk", 3) == 0)) | |
| 1588 offset = 3; | |
| 1589 else if (strncmp(dp->d_name, "j2re", 4) == 0) | |
| 1590 offset = 4; | |
| 1591 else if (strncmp(dp->d_name, "j2sdk", 5) == 0) | |
| 1592 offset = 5; | |
| 1593 if (offset > 0) { | |
| 1594 if ((acceptable_release(dp->d_name + offset, | |
| 1595 info->jre_version)) && CheckSanity(dirname, dp->d_name)) | |
| 1596 if ((best == NULL) || (exact_version_id( | |
| 1597 dp->d_name + offset, best + best_offset) > 0)) { | |
| 1598 if (best != NULL) | |
| 1599 free(best); | |
| 1600 best = strdup(dp->d_name); | |
| 1601 best_offset = offset; | |
| 1602 } | |
| 1603 } | |
| 1604 } | |
| 1605 } while (dp != NULL); | |
| 1606 (void) closedir(dirp); | |
| 1607 if (best == NULL) | |
| 1608 return (NULL); | |
| 1609 else { | |
| 1610 ret_str = MemAlloc(strlen(dirname) + strlen(best) + 2); | |
| 1611 ret_str = strcat(strcat(strcpy(ret_str, dirname), "/"), best); | |
| 1612 free(best); | |
| 1613 return (ret_str); | |
| 1614 } | |
| 1615 } | |
| 1616 | |
| 1617 /* | |
| 1618 * This is the global entry point. It examines the host for the optimal | |
| 1619 * JRE to be used by scanning a set of directories. The set of directories | |
| 1620 * is platform dependent and can be overridden by the environment | |
| 1621 * variable JAVA_VERSION_PATH. | |
| 1622 * | |
| 1623 * This routine itself simply determines the set of appropriate | |
| 1624 * directories before passing control onto ProcessDir(). | |
| 1625 */ | |
| 1626 char* | |
| 1627 LocateJRE(manifest_info* info) | |
| 1628 { | |
| 1629 char *path; | |
| 1630 char *home; | |
| 1631 char *target = NULL; | |
| 1632 char *dp; | |
| 1633 char *cp; | |
| 1634 | |
| 1635 /* | |
| 1636 * Start by getting JAVA_VERSION_PATH | |
| 1637 */ | |
| 1638 if (info->jre_restrict_search) | |
| 1639 path = strdup(system_dir); | |
| 1640 else if ((path = getenv("JAVA_VERSION_PATH")) != NULL) | |
| 1641 path = strdup(path); | |
| 1642 else | |
| 1643 if ((home = getenv("HOME")) != NULL) { | |
| 1644 path = (char *)MemAlloc(strlen(home) + 13); | |
| 1645 path = strcat(strcat(strcat(strcpy(path, home), | |
| 1646 user_dir), ":"), system_dir); | |
| 1647 } else | |
| 1648 path = strdup(system_dir); | |
| 1649 | |
| 1650 /* | |
| 1651 * Step through each directory on the path. Terminate the scan with | |
| 1652 * the first directory with an acceptable JRE. | |
| 1653 */ | |
| 1654 cp = dp = path; | |
| 1655 while (dp != NULL) { | |
| 1656 cp = strchr(dp, (int)':'); | |
| 1657 if (cp != NULL) | |
| 1658 *cp = (char)NULL; | |
| 1659 if ((target = ProcessDir(info, dp)) != NULL) | |
| 1660 break; | |
| 1661 dp = cp; | |
| 1662 if (dp != NULL) | |
| 1663 dp++; | |
| 1664 } | |
| 1665 free(path); | |
| 1666 return (target); | |
| 1667 } | |
| 1668 | |
| 1669 /* | |
| 1670 * Given a path to a jre to execute, this routine checks if this process | |
| 1671 * is indeed that jre. If not, it exec's that jre. | |
| 1672 * | |
| 1673 * We want to actually check the paths rather than just the version string | |
| 1674 * built into the executable, so that given version specification (and | |
| 1675 * JAVA_VERSION_PATH) will yield the exact same Java environment, regardless | |
| 1676 * of the version of the arbitrary launcher we start with. | |
| 1677 */ | |
| 1678 void | |
| 1679 ExecJRE(char *jre, char **argv) | |
| 1680 { | |
| 1681 char wanted[PATH_MAX]; | |
| 1682 char *execname; | |
| 1683 char *progname; | |
| 1684 | |
| 1685 /* | |
| 1686 * Resolve the real path to the directory containing the selected JRE. | |
| 1687 */ | |
| 1688 if (realpath(jre, wanted) == NULL) { | |
| 1689 fprintf(stderr, "Unable to resolve %s\n", jre); | |
| 1690 exit(1); | |
| 1691 } | |
| 1692 | |
| 1693 /* | |
| 1694 * Resolve the real path to the currently running launcher. | |
| 1695 */ | |
| 1696 execname = SetExecname(argv); | |
| 1697 if (execname == NULL) { | |
| 1698 fprintf(stderr, "Unable to resolve current executable\n"); | |
| 1699 exit(1); | |
| 1700 } | |
| 1701 | |
| 1702 /* | |
| 1703 * If the path to the selected JRE directory is a match to the initial | |
| 1704 * portion of the path to the currently executing JRE, we have a winner! | |
| 1705 * If so, just return. | |
| 1706 */ | |
| 1707 if (strncmp(wanted, execname, strlen(wanted)) == 0) | |
| 1708 return; /* I am the droid you were looking for */ | |
| 1709 | |
| 1710 /* | |
| 1711 * If this isn't the selected version, exec the selected version. | |
| 1712 */ | |
| 1713 #ifdef JAVA_ARGS /* javac, jar and friends. */ | |
| 1714 progname = "java"; | |
| 1715 #else /* java, oldjava, javaw and friends */ | |
| 1716 #ifdef PROGNAME | |
| 1717 progname = PROGNAME; | |
| 1718 #else | |
| 1719 progname = *argv; | |
| 1720 if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) { | |
| 1721 progname = s + 1; | |
| 1722 } | |
| 1723 #endif /* PROGNAME */ | |
| 1724 #endif /* JAVA_ARGS */ | |
| 1725 | |
| 1726 /* | |
| 1727 * This should never happen (because of the selection code in SelectJRE), | |
| 1728 * but check for "impossibly" long path names just because buffer overruns | |
| 1729 * can be so deadly. | |
| 1730 */ | |
| 1731 if (strlen(wanted) + strlen(progname) + 6 > PATH_MAX) { | |
| 1732 fprintf(stderr, "Path length exceeds maximum length (PATH_MAX)\n"); | |
| 1733 exit(1); | |
| 1734 } | |
| 1735 | |
| 1736 /* | |
| 1737 * Construct the path and exec it. | |
| 1738 */ | |
| 1739 (void)strcat(strcat(wanted, "/bin/"), progname); | |
| 1740 argv[0] = progname; | |
| 1741 if (_launcher_debug) { | |
| 1742 int i; | |
| 1743 printf("execv(\"%s\"", wanted); | |
| 1744 for (i = 0; argv[i] != NULL; i++) | |
| 1745 printf(", \"%s\"", argv[i]); | |
| 1746 printf(")\n"); | |
| 1747 } | |
| 1748 execv(wanted, argv); | |
| 1749 fprintf(stderr, "Exec of %s failed\n", wanted); | |
| 1750 exit(1); | |
| 1751 } | |
| 1752 | |
| 1753 #endif /* ifndef GAMMA */ | |
| 1754 | |
| 1755 /* | |
| 1756 * "Borrowed" from Solaris 10 where the unsetenv() function is being added | |
| 1757 * to libc thanks to SUSv3 (Standard Unix Specification, version 3). As | |
| 1758 * such, in the fullness of time this will appear in libc on all relevant | |
| 1759 * Solaris/Linux platforms and maybe even the Windows platform. At that | |
| 1760 * time, this stub can be removed. | |
| 1761 * | |
| 1762 * This implementation removes the environment locking for multithreaded | |
| 1763 * applications. (We don't have access to these mutexes within libc and | |
| 1764 * the launcher isn't multithreaded.) Note that what remains is platform | |
| 1765 * independent, because it only relies on attributes that a POSIX environment | |
| 1766 * defines. | |
| 1767 * | |
| 1768 * Returns 0 on success, -1 on failure. | |
| 1769 * | |
| 1770 * Also removed was the setting of errno. The only value of errno set | |
| 1771 * was EINVAL ("Invalid Argument"). | |
| 1772 */ | |
| 1773 | |
| 1774 /* | |
| 1775 * s1(environ) is name=value | |
| 1776 * s2(name) is name(not the form of name=value). | |
| 1777 * if names match, return value of 1, else return 0 | |
| 1778 */ | |
| 1779 static int | |
| 1780 match_noeq(const char *s1, const char *s2) | |
| 1781 { | |
| 1782 while (*s1 == *s2++) { | |
| 1783 if (*s1++ == '=') | |
| 1784 return (1); | |
| 1785 } | |
| 1786 if (*s1 == '=' && s2[-1] == '\0') | |
| 1787 return (1); | |
| 1788 return (0); | |
| 1789 } | |
| 1790 | |
| 1791 /* | |
| 1792 * added for SUSv3 standard | |
| 1793 * | |
| 1794 * Delete entry from environ. | |
| 1795 * Do not free() memory! Other threads may be using it. | |
| 1796 * Keep it around forever. | |
| 1797 */ | |
| 1798 static int | |
| 1799 borrowed_unsetenv(const char *name) | |
| 1800 { | |
| 1801 long idx; /* index into environ */ | |
| 1802 | |
| 1803 if (name == NULL || *name == '\0' || | |
| 1804 strchr(name, '=') != NULL) { | |
| 1805 return (-1); | |
| 1806 } | |
| 1807 | |
| 1808 for (idx = 0; environ[idx] != NULL; idx++) { | |
| 1809 if (match_noeq(environ[idx], name)) | |
| 1810 break; | |
| 1811 } | |
| 1812 if (environ[idx] == NULL) { | |
| 1813 /* name not found but still a success */ | |
| 1814 return (0); | |
| 1815 } | |
| 1816 /* squeeze up one entry */ | |
| 1817 do { | |
| 1818 environ[idx] = environ[idx+1]; | |
| 1819 } while (environ[++idx] != NULL); | |
| 1820 | |
| 1821 return (0); | |
| 1822 } | |
| 1823 /* --- End of "borrowed" code --- */ | |
| 1824 | |
| 1825 /* | |
| 1826 * Wrapper for unsetenv() function. | |
| 1827 */ | |
| 1828 int | |
| 1829 UnsetEnv(char *name) | |
| 1830 { | |
| 1831 return(borrowed_unsetenv(name)); | |
| 1832 } | |
| 388 | 1833 /* |
| 1834 * The implementation for finding classes from the bootstrap | |
| 1835 * class loader, refer to java.h | |
| 1836 */ | |
| 1837 static FindClassFromBootLoader_t *findBootClass = NULL; | |
| 1838 | |
| 1839 jclass | |
| 1840 FindBootStrapClass(JNIEnv *env, const char* classname) | |
| 1841 { | |
| 1842 if (findBootClass == NULL) { | |
| 1843 findBootClass = (FindClassFromBootLoader_t *)dlsym(RTLD_DEFAULT, | |
| 1844 "JVM_FindClassFromBootLoader"); | |
| 1845 if (findBootClass == NULL) { | |
| 1846 fprintf(stderr, "Error: could load method JVM_FindClassFromBootLoader"); | |
| 1847 return NULL; | |
| 1848 } | |
| 1849 } | |
| 1850 return findBootClass(env, classname, JNI_FALSE); | |
| 1851 } | |
| 1852 |