1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os/posix/launcher/java_md.c Thu Dec 02 05:45:54 2010 -0800
1.3 @@ -0,0 +1,1878 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +
1.29 +#include "java.h"
1.30 +#include <dirent.h>
1.31 +#include <dlfcn.h>
1.32 +#include <fcntl.h>
1.33 +#include <inttypes.h>
1.34 +#include <stdio.h>
1.35 +#include <string.h>
1.36 +#include <stdlib.h>
1.37 +#include <limits.h>
1.38 +#include <sys/stat.h>
1.39 +#include <unistd.h>
1.40 +#include <sys/types.h>
1.41 +
1.42 +#ifndef GAMMA
1.43 +#include "manifest_info.h"
1.44 +#include "version_comp.h"
1.45 +#endif
1.46 +
1.47 +#ifdef __linux__
1.48 +#include <pthread.h>
1.49 +#else
1.50 +#include <thread.h>
1.51 +#endif
1.52 +
1.53 +#define JVM_DLL "libjvm.so"
1.54 +#define JAVA_DLL "libjava.so"
1.55 +
1.56 +#ifndef GAMMA /* launcher.make defines ARCH */
1.57 +/*
1.58 + * If a processor / os combination has the ability to run binaries of
1.59 + * two data models and cohabitation of jre/jdk bits with both data
1.60 + * models is supported, then DUAL_MODE is defined. When DUAL_MODE is
1.61 + * defined, the architecture names for the narrow and wide version of
1.62 + * the architecture are defined in LIBARCH64NAME and LIBARCH32NAME. Currently
1.63 + * only Solaris on sparc/sparcv9 and i586/amd64 is DUAL_MODE; linux
1.64 + * i586/amd64 could be defined as DUAL_MODE but that is not the
1.65 + * current policy.
1.66 + */
1.67 +
1.68 +#ifndef LIBARCHNAME
1.69 +# error "The macro LIBARCHNAME was not defined on the compile line"
1.70 +#endif
1.71 +
1.72 +#ifdef __sun
1.73 +# define DUAL_MODE
1.74 +# ifndef LIBARCH32NAME
1.75 +# error "The macro LIBARCH32NAME was not defined on the compile line"
1.76 +# endif
1.77 +# ifndef LIBARCH64NAME
1.78 +# error "The macro LIBARCH64NAME was not defined on the compile line"
1.79 +# endif
1.80 +# include <sys/systeminfo.h>
1.81 +# include <sys/elf.h>
1.82 +# include <stdio.h>
1.83 +#endif
1.84 +
1.85 +#endif /* ifndef GAMMA */
1.86 +
1.87 +/* pointer to environment */
1.88 +extern char **environ;
1.89 +
1.90 +#ifndef GAMMA
1.91 +/*
1.92 + * A collection of useful strings. One should think of these as #define
1.93 + * entries, but actual strings can be more efficient (with many compilers).
1.94 + */
1.95 +#ifdef __linux__
1.96 +static const char *system_dir = "/usr/java";
1.97 +static const char *user_dir = "/java";
1.98 +#else /* Solaris */
1.99 +static const char *system_dir = "/usr/jdk";
1.100 +static const char *user_dir = "/jdk";
1.101 +#endif
1.102 +
1.103 +#endif /* ifndef GAMMA */
1.104 +
1.105 +/*
1.106 + * Flowchart of launcher execs and options processing on unix
1.107 + *
1.108 + * The selection of the proper vm shared library to open depends on
1.109 + * several classes of command line options, including vm "flavor"
1.110 + * options (-client, -server) and the data model options, -d32 and
1.111 + * -d64, as well as a version specification which may have come from
1.112 + * the command line or from the manifest of an executable jar file.
1.113 + * The vm selection options are not passed to the running
1.114 + * virtual machine; they must be screened out by the launcher.
1.115 + *
1.116 + * The version specification (if any) is processed first by the
1.117 + * platform independent routine SelectVersion. This may result in
1.118 + * the exec of the specified launcher version.
1.119 + *
1.120 + * Typically, the launcher execs at least once to ensure a suitable
1.121 + * LD_LIBRARY_PATH is in effect for the process. The first exec
1.122 + * screens out all the data model options; leaving the choice of data
1.123 + * model implicit in the binary selected to run. However, in case no
1.124 + * exec is done, the data model options are screened out before the vm
1.125 + * is invoked.
1.126 + *
1.127 + * incoming argv ------------------------------
1.128 + * | |
1.129 + * \|/ |
1.130 + * CheckJVMType |
1.131 + * (removes -client, -server, etc.) |
1.132 + * \|/
1.133 + * CreateExecutionEnvironment
1.134 + * (removes -d32 and -d64,
1.135 + * determines desired data model,
1.136 + * sets up LD_LIBRARY_PATH,
1.137 + * and exec's)
1.138 + * |
1.139 + * --------------------------------------------
1.140 + * |
1.141 + * \|/
1.142 + * exec child 1 incoming argv -----------------
1.143 + * | |
1.144 + * \|/ |
1.145 + * CheckJVMType |
1.146 + * (removes -client, -server, etc.) |
1.147 + * | \|/
1.148 + * | CreateExecutionEnvironment
1.149 + * | (verifies desired data model
1.150 + * | is running and acceptable
1.151 + * | LD_LIBRARY_PATH;
1.152 + * | no-op in child)
1.153 + * |
1.154 + * \|/
1.155 + * TranslateDashJArgs...
1.156 + * (Prepare to pass args to vm)
1.157 + * |
1.158 + * |
1.159 + * |
1.160 + * \|/
1.161 + * ParseArguments
1.162 + * (ignores -d32 and -d64,
1.163 + * processes version options,
1.164 + * creates argument list for vm,
1.165 + * etc.)
1.166 + *
1.167 + */
1.168 +
1.169 +static char *SetExecname(char **argv);
1.170 +static char * GetExecname();
1.171 +static jboolean GetJVMPath(const char *jrepath, const char *jvmtype,
1.172 + char *jvmpath, jint jvmpathsize, char * arch);
1.173 +static jboolean GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative);
1.174 +
1.175 +#ifndef GAMMA
1.176 +const char *
1.177 +GetArch()
1.178 +{
1.179 + return LIBARCHNAME;
1.180 +}
1.181 +#endif /* ifndef GAMMA */
1.182 +
1.183 +void
1.184 +CreateExecutionEnvironment(int *_argcp,
1.185 + char ***_argvp,
1.186 + char jrepath[],
1.187 + jint so_jrepath,
1.188 + char jvmpath[],
1.189 + jint so_jvmpath,
1.190 + char **original_argv) {
1.191 + /*
1.192 + * First, determine if we are running the desired data model. If we
1.193 + * are running the desired data model, all the error messages
1.194 + * associated with calling GetJREPath, ReadKnownVMs, etc. should be
1.195 + * output. However, if we are not running the desired data model,
1.196 + * some of the errors should be suppressed since it is more
1.197 + * informative to issue an error message based on whether or not the
1.198 + * os/processor combination has dual mode capabilities.
1.199 + */
1.200 +
1.201 + char *execname = NULL;
1.202 + int original_argc = *_argcp;
1.203 + jboolean jvmpathExists;
1.204 +
1.205 + /* Compute the name of the executable */
1.206 + execname = SetExecname(*_argvp);
1.207 +
1.208 +#ifndef GAMMA
1.209 + /* Set the LD_LIBRARY_PATH environment variable, check data model
1.210 + flags, and exec process, if needed */
1.211 + {
1.212 + char *arch = (char *)GetArch(); /* like sparc or sparcv9 */
1.213 + char * jvmtype = NULL;
1.214 + int argc = *_argcp;
1.215 + char **argv = original_argv;
1.216 +
1.217 + char *runpath = NULL; /* existing effective LD_LIBRARY_PATH
1.218 + setting */
1.219 +
1.220 + int running = /* What data model is being ILP32 =>
1.221 + 32 bit vm; LP64 => 64 bit vm */
1.222 +#ifdef _LP64
1.223 + 64;
1.224 +#else
1.225 + 32;
1.226 +#endif
1.227 +
1.228 + int wanted = running; /* What data mode is being
1.229 + asked for? Current model is
1.230 + fine unless another model
1.231 + is asked for */
1.232 +
1.233 + char* new_runpath = NULL; /* desired new LD_LIBRARY_PATH string */
1.234 + char* newpath = NULL; /* path on new LD_LIBRARY_PATH */
1.235 + char* lastslash = NULL;
1.236 +
1.237 + char** newenvp = NULL; /* current environment */
1.238 +
1.239 + char** newargv = NULL;
1.240 + int newargc = 0;
1.241 +#ifdef __sun
1.242 + char* dmpath = NULL; /* data model specific LD_LIBRARY_PATH,
1.243 + Solaris only */
1.244 +#endif
1.245 +
1.246 + /*
1.247 + * Starting in 1.5, all unix platforms accept the -d32 and -d64
1.248 + * options. On platforms where only one data-model is supported
1.249 + * (e.g. ia-64 Linux), using the flag for the other data model is
1.250 + * an error and will terminate the program.
1.251 + */
1.252 +
1.253 + { /* open new scope to declare local variables */
1.254 + int i;
1.255 +
1.256 + newargv = (char **)JLI_MemAlloc((argc+1) * sizeof(*newargv));
1.257 + newargv[newargc++] = argv[0];
1.258 +
1.259 + /* scan for data model arguments and remove from argument list;
1.260 + last occurrence determines desired data model */
1.261 + for (i=1; i < argc; i++) {
1.262 +
1.263 + if (strcmp(argv[i], "-J-d64") == 0 || strcmp(argv[i], "-d64") == 0) {
1.264 + wanted = 64;
1.265 + continue;
1.266 + }
1.267 + if (strcmp(argv[i], "-J-d32") == 0 || strcmp(argv[i], "-d32") == 0) {
1.268 + wanted = 32;
1.269 + continue;
1.270 + }
1.271 + newargv[newargc++] = argv[i];
1.272 +
1.273 +#ifdef JAVA_ARGS
1.274 + if (argv[i][0] != '-')
1.275 + continue;
1.276 +#else
1.277 + if (strcmp(argv[i], "-classpath") == 0 || strcmp(argv[i], "-cp") == 0) {
1.278 + i++;
1.279 + if (i >= argc) break;
1.280 + newargv[newargc++] = argv[i];
1.281 + continue;
1.282 + }
1.283 + if (argv[i][0] != '-') { i++; break; }
1.284 +#endif
1.285 + }
1.286 +
1.287 + /* copy rest of args [i .. argc) */
1.288 + while (i < argc) {
1.289 + newargv[newargc++] = argv[i++];
1.290 + }
1.291 + newargv[newargc] = NULL;
1.292 +
1.293 + /*
1.294 + * newargv has all proper arguments here
1.295 + */
1.296 +
1.297 + argc = newargc;
1.298 + argv = newargv;
1.299 + }
1.300 +
1.301 + /* If the data model is not changing, it is an error if the
1.302 + jvmpath does not exist */
1.303 + if (wanted == running) {
1.304 + /* Find out where the JRE is that we will be using. */
1.305 + if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) {
1.306 + fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n");
1.307 + exit(2);
1.308 + }
1.309 +
1.310 + /* Find the specified JVM type */
1.311 + if (ReadKnownVMs(jrepath, arch, JNI_FALSE) < 1) {
1.312 + fprintf(stderr, "Error: no known VMs. (check for corrupt jvm.cfg file)\n");
1.313 + exit(1);
1.314 + }
1.315 +
1.316 + jvmpath[0] = '\0';
1.317 + jvmtype = CheckJvmType(_argcp, _argvp, JNI_FALSE);
1.318 +
1.319 + if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, arch )) {
1.320 + fprintf(stderr, "Error: no `%s' JVM at `%s'.\n", jvmtype, jvmpath);
1.321 + exit(4);
1.322 + }
1.323 + } else { /* do the same speculatively or exit */
1.324 +#ifdef DUAL_MODE
1.325 + if (running != wanted) {
1.326 + /* Find out where the JRE is that we will be using. */
1.327 + if (!GetJREPath(jrepath, so_jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), JNI_TRUE)) {
1.328 + goto EndDataModelSpeculate;
1.329 + }
1.330 +
1.331 + /*
1.332 + * Read in jvm.cfg for target data model and process vm
1.333 + * selection options.
1.334 + */
1.335 + if (ReadKnownVMs(jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), JNI_TRUE) < 1) {
1.336 + goto EndDataModelSpeculate;
1.337 + }
1.338 + jvmpath[0] = '\0';
1.339 + jvmtype = CheckJvmType(_argcp, _argvp, JNI_TRUE);
1.340 + /* exec child can do error checking on the existence of the path */
1.341 + jvmpathExists = GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath,
1.342 + ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME));
1.343 +
1.344 + }
1.345 + EndDataModelSpeculate: /* give up and let other code report error message */
1.346 + ;
1.347 +#else
1.348 + fprintf(stderr, "Running a %d-bit JVM is not supported on this platform.\n", wanted);
1.349 + exit(1);
1.350 +#endif
1.351 + }
1.352 +
1.353 + /*
1.354 + * We will set the LD_LIBRARY_PATH as follows:
1.355 + *
1.356 + * o $JVMPATH (directory portion only)
1.357 + * o $JRE/lib/$LIBARCHNAME
1.358 + * o $JRE/../lib/$LIBARCHNAME
1.359 + *
1.360 + * followed by the user's previous effective LD_LIBRARY_PATH, if
1.361 + * any.
1.362 + */
1.363 +
1.364 +#ifdef __sun
1.365 + /*
1.366 + * Starting in Solaris 7, ld.so.1 supports three LD_LIBRARY_PATH
1.367 + * variables:
1.368 + *
1.369 + * 1. LD_LIBRARY_PATH -- used for 32 and 64 bit searches if
1.370 + * data-model specific variables are not set.
1.371 + *
1.372 + * 2. LD_LIBRARY_PATH_64 -- overrides and replaces LD_LIBRARY_PATH
1.373 + * for 64-bit binaries.
1.374 + *
1.375 + * 3. LD_LIBRARY_PATH_32 -- overrides and replaces LD_LIBRARY_PATH
1.376 + * for 32-bit binaries.
1.377 + *
1.378 + * The vm uses LD_LIBRARY_PATH to set the java.library.path system
1.379 + * property. To shield the vm from the complication of multiple
1.380 + * LD_LIBRARY_PATH variables, if the appropriate data model
1.381 + * specific variable is set, we will act as if LD_LIBRARY_PATH had
1.382 + * the value of the data model specific variant and the data model
1.383 + * specific variant will be unset. Note that the variable for the
1.384 + * *wanted* data model must be used (if it is set), not simply the
1.385 + * current running data model.
1.386 + */
1.387 +
1.388 + switch(wanted) {
1.389 + case 0:
1.390 + if(running == 32) {
1.391 + dmpath = getenv("LD_LIBRARY_PATH_32");
1.392 + wanted = 32;
1.393 + }
1.394 + else {
1.395 + dmpath = getenv("LD_LIBRARY_PATH_64");
1.396 + wanted = 64;
1.397 + }
1.398 + break;
1.399 +
1.400 + case 32:
1.401 + dmpath = getenv("LD_LIBRARY_PATH_32");
1.402 + break;
1.403 +
1.404 + case 64:
1.405 + dmpath = getenv("LD_LIBRARY_PATH_64");
1.406 + break;
1.407 +
1.408 + default:
1.409 + fprintf(stderr, "Improper value at line %d.", __LINE__);
1.410 + exit(1); /* unknown value in wanted */
1.411 + break;
1.412 + }
1.413 +
1.414 + /*
1.415 + * If dmpath is NULL, the relevant data model specific variable is
1.416 + * not set and normal LD_LIBRARY_PATH should be used.
1.417 + */
1.418 + if( dmpath == NULL) {
1.419 + runpath = getenv("LD_LIBRARY_PATH");
1.420 + }
1.421 + else {
1.422 + runpath = dmpath;
1.423 + }
1.424 +#else
1.425 + /*
1.426 + * If not on Solaris, assume only a single LD_LIBRARY_PATH
1.427 + * variable.
1.428 + */
1.429 + runpath = getenv("LD_LIBRARY_PATH");
1.430 +#endif /* __sun */
1.431 +
1.432 +#ifdef __linux
1.433 + /*
1.434 + * On linux, if a binary is running as sgid or suid, glibc sets
1.435 + * LD_LIBRARY_PATH to the empty string for security purposes. (In
1.436 + * contrast, on Solaris the LD_LIBRARY_PATH variable for a
1.437 + * privileged binary does not lose its settings; but the dynamic
1.438 + * linker does apply more scrutiny to the path.) The launcher uses
1.439 + * the value of LD_LIBRARY_PATH to prevent an exec loop.
1.440 + * Therefore, if we are running sgid or suid, this function's
1.441 + * setting of LD_LIBRARY_PATH will be ineffective and we should
1.442 + * return from the function now. Getting the right libraries to
1.443 + * be found must be handled through other mechanisms.
1.444 + */
1.445 + if((getgid() != getegid()) || (getuid() != geteuid()) ) {
1.446 + return;
1.447 + }
1.448 +#endif
1.449 +
1.450 + /* runpath contains current effective LD_LIBRARY_PATH setting */
1.451 +
1.452 + jvmpath = JLI_StringDup(jvmpath);
1.453 + new_runpath = JLI_MemAlloc( ((runpath!=NULL)?strlen(runpath):0) +
1.454 + 2*strlen(jrepath) + 2*strlen(arch) +
1.455 + strlen(jvmpath) + 52);
1.456 + newpath = new_runpath + strlen("LD_LIBRARY_PATH=");
1.457 +
1.458 +
1.459 + /*
1.460 + * Create desired LD_LIBRARY_PATH value for target data model.
1.461 + */
1.462 + {
1.463 + /* remove the name of the .so from the JVM path */
1.464 + lastslash = strrchr(jvmpath, '/');
1.465 + if (lastslash)
1.466 + *lastslash = '\0';
1.467 +
1.468 +
1.469 + /* jvmpath, ((running != wanted)?((wanted==64)?"/"LIBARCH64NAME:"/.."):""), */
1.470 +
1.471 + sprintf(new_runpath, "LD_LIBRARY_PATH="
1.472 + "%s:"
1.473 + "%s/lib/%s:"
1.474 + "%s/../lib/%s",
1.475 + jvmpath,
1.476 +#ifdef DUAL_MODE
1.477 + jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME),
1.478 + jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME)
1.479 +#else
1.480 + jrepath, arch,
1.481 + jrepath, arch
1.482 +#endif
1.483 + );
1.484 +
1.485 +
1.486 + /*
1.487 + * Check to make sure that the prefix of the current path is the
1.488 + * desired environment variable setting.
1.489 + */
1.490 + if (runpath != NULL &&
1.491 + strncmp(newpath, runpath, strlen(newpath))==0 &&
1.492 + (runpath[strlen(newpath)] == 0 || runpath[strlen(newpath)] == ':') &&
1.493 + (running == wanted) /* data model does not have to be changed */
1.494 +#ifdef __sun
1.495 + && (dmpath == NULL) /* data model specific variables not set */
1.496 +#endif
1.497 + ) {
1.498 +
1.499 + return;
1.500 +
1.501 + }
1.502 + }
1.503 +
1.504 + /*
1.505 + * Place the desired environment setting onto the prefix of
1.506 + * LD_LIBRARY_PATH. Note that this prevents any possible infinite
1.507 + * loop of execv() because we test for the prefix, above.
1.508 + */
1.509 + if (runpath != 0) {
1.510 + strcat(new_runpath, ":");
1.511 + strcat(new_runpath, runpath);
1.512 + }
1.513 +
1.514 + if( putenv(new_runpath) != 0) {
1.515 + exit(1); /* problem allocating memory; LD_LIBRARY_PATH not set
1.516 + properly */
1.517 + }
1.518 +
1.519 + /*
1.520 + * Unix systems document that they look at LD_LIBRARY_PATH only
1.521 + * once at startup, so we have to re-exec the current executable
1.522 + * to get the changed environment variable to have an effect.
1.523 + */
1.524 +
1.525 +#ifdef __sun
1.526 + /*
1.527 + * If dmpath is not NULL, remove the data model specific string
1.528 + * in the environment for the exec'ed child.
1.529 + */
1.530 +
1.531 + if( dmpath != NULL)
1.532 + (void)UnsetEnv((wanted==32)?"LD_LIBRARY_PATH_32":"LD_LIBRARY_PATH_64");
1.533 +#endif
1.534 +
1.535 + newenvp = environ;
1.536 +
1.537 + {
1.538 + char *newexec = execname;
1.539 +#ifdef DUAL_MODE
1.540 + /*
1.541 + * If the data model is being changed, the path to the
1.542 + * executable must be updated accordingly; the executable name
1.543 + * and directory the executable resides in are separate. In the
1.544 + * case of 32 => 64, the new bits are assumed to reside in, e.g.
1.545 + * "olddir/LIBARCH64NAME/execname"; in the case of 64 => 32,
1.546 + * the bits are assumed to be in "olddir/../execname". For example,
1.547 + *
1.548 + * olddir/sparcv9/execname
1.549 + * olddir/amd64/execname
1.550 + *
1.551 + * for Solaris SPARC and Linux amd64, respectively.
1.552 + */
1.553 +
1.554 + if (running != wanted) {
1.555 + char *oldexec = strcpy(JLI_MemAlloc(strlen(execname) + 1), execname);
1.556 + char *olddir = oldexec;
1.557 + char *oldbase = strrchr(oldexec, '/');
1.558 +
1.559 +
1.560 + newexec = JLI_MemAlloc(strlen(execname) + 20);
1.561 + *oldbase++ = 0;
1.562 + sprintf(newexec, "%s/%s/%s", olddir,
1.563 + ((wanted==64) ? LIBARCH64NAME : ".."), oldbase);
1.564 + argv[0] = newexec;
1.565 + }
1.566 +#endif
1.567 +
1.568 + (void)fflush(stdout);
1.569 + (void)fflush(stderr);
1.570 + execve(newexec, argv, newenvp);
1.571 + perror("execve()");
1.572 +
1.573 + fprintf(stderr, "Error trying to exec %s.\n", newexec);
1.574 + fprintf(stderr, "Check if file exists and permissions are set correctly.\n");
1.575 +
1.576 +#ifdef DUAL_MODE
1.577 + if (running != wanted) {
1.578 + fprintf(stderr, "Failed to start a %d-bit JVM process from a %d-bit JVM.\n",
1.579 + wanted, running);
1.580 +# ifdef __sun
1.581 +
1.582 +# ifdef __sparc
1.583 + fprintf(stderr, "Verify all necessary J2SE components have been installed.\n" );
1.584 + fprintf(stderr,
1.585 + "(Solaris SPARC 64-bit components must be installed after 32-bit components.)\n" );
1.586 +# else
1.587 + fprintf(stderr, "Either 64-bit processes are not supported by this platform\n");
1.588 + fprintf(stderr, "or the 64-bit components have not been installed.\n");
1.589 +# endif
1.590 + }
1.591 +# endif
1.592 +#endif
1.593 +
1.594 + }
1.595 +
1.596 + exit(1);
1.597 + }
1.598 +
1.599 +#else /* ifndef GAMMA */
1.600 +
1.601 + /*
1.602 + * gamma launcher is simpler in that it doesn't handle VM flavors, data
1.603 + * model, LD_LIBRARY_PATH, etc. Assuming everything is set-up correctly
1.604 + * all we need to do here is to return correct path names. See also
1.605 + * GetJVMPath() and GetApplicationHome().
1.606 + */
1.607 +
1.608 + { char *arch = (char *) ARCH; /* like sparc or sparcv9 */
1.609 + char *p;
1.610 +
1.611 + if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) {
1.612 + fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n");
1.613 + exit(2);
1.614 + }
1.615 +
1.616 + if (!GetJVMPath(jrepath, NULL, jvmpath, so_jvmpath, arch )) {
1.617 + fprintf(stderr, "Error: no JVM at `%s'.\n", jvmpath);
1.618 + exit(4);
1.619 + }
1.620 + }
1.621 +
1.622 +#endif /* ifndef GAMMA */
1.623 +}
1.624 +
1.625 +
1.626 +/*
1.627 + * On Solaris VM choosing is done by the launcher (java.c).
1.628 + */
1.629 +static jboolean
1.630 +GetJVMPath(const char *jrepath, const char *jvmtype,
1.631 + char *jvmpath, jint jvmpathsize, char * arch)
1.632 +{
1.633 + struct stat s;
1.634 +
1.635 +#ifndef GAMMA
1.636 + if (strchr(jvmtype, '/')) {
1.637 + sprintf(jvmpath, "%s/" JVM_DLL, jvmtype);
1.638 + } else {
1.639 + sprintf(jvmpath, "%s/lib/%s/%s/" JVM_DLL, jrepath, arch, jvmtype);
1.640 + }
1.641 +#else
1.642 + /*
1.643 + * For gamma launcher, JVM is either built-in or in the same directory.
1.644 + * Either way we return "<exe_path>/libjvm.so" where <exe_path> is the
1.645 + * directory where gamma launcher is located.
1.646 + */
1.647 +
1.648 + char *p;
1.649 +
1.650 + snprintf(jvmpath, jvmpathsize, "%s", GetExecname());
1.651 + p = strrchr(jvmpath, '/');
1.652 + if (p) {
1.653 + /* replace executable name with libjvm.so */
1.654 + snprintf(p + 1, jvmpathsize - (p + 1 - jvmpath), "%s", JVM_DLL);
1.655 + } else {
1.656 + /* this case shouldn't happen */
1.657 + snprintf(jvmpath, jvmpathsize, "%s", JVM_DLL);
1.658 + }
1.659 +#endif /* ifndef GAMMA */
1.660 +
1.661 + if (_launcher_debug)
1.662 + printf("Does `%s' exist ... ", jvmpath);
1.663 +
1.664 + if (stat(jvmpath, &s) == 0) {
1.665 + if (_launcher_debug)
1.666 + printf("yes.\n");
1.667 + return JNI_TRUE;
1.668 + } else {
1.669 + if (_launcher_debug)
1.670 + printf("no.\n");
1.671 + return JNI_FALSE;
1.672 + }
1.673 +}
1.674 +
1.675 +/*
1.676 + * Find path to JRE based on .exe's location or registry settings.
1.677 + */
1.678 +static jboolean
1.679 +GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative)
1.680 +{
1.681 + char libjava[MAXPATHLEN];
1.682 +
1.683 + if (GetApplicationHome(path, pathsize)) {
1.684 + /* Is JRE co-located with the application? */
1.685 + sprintf(libjava, "%s/lib/%s/" JAVA_DLL, path, arch);
1.686 + if (access(libjava, F_OK) == 0) {
1.687 + goto found;
1.688 + }
1.689 +
1.690 + /* Does the app ship a private JRE in <apphome>/jre directory? */
1.691 + sprintf(libjava, "%s/jre/lib/%s/" JAVA_DLL, path, arch);
1.692 + if (access(libjava, F_OK) == 0) {
1.693 + strcat(path, "/jre");
1.694 + goto found;
1.695 + }
1.696 + }
1.697 +
1.698 + if (!speculative)
1.699 + fprintf(stderr, "Error: could not find " JAVA_DLL "\n");
1.700 + return JNI_FALSE;
1.701 +
1.702 + found:
1.703 + if (_launcher_debug)
1.704 + printf("JRE path is %s\n", path);
1.705 + return JNI_TRUE;
1.706 +}
1.707 +
1.708 +jboolean
1.709 +LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
1.710 +{
1.711 +#ifdef GAMMA
1.712 + /* JVM is directly linked with gamma launcher; no dlopen() */
1.713 + ifn->CreateJavaVM = JNI_CreateJavaVM;
1.714 + ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs;
1.715 + return JNI_TRUE;
1.716 +#else
1.717 + Dl_info dlinfo;
1.718 + void *libjvm;
1.719 +
1.720 + if (_launcher_debug) {
1.721 + printf("JVM path is %s\n", jvmpath);
1.722 + }
1.723 +
1.724 + libjvm = dlopen(jvmpath, RTLD_NOW + RTLD_GLOBAL);
1.725 + if (libjvm == NULL) {
1.726 +#if defined(__sparc) && !defined(_LP64) /* i.e. 32-bit sparc */
1.727 + FILE * fp;
1.728 + Elf32_Ehdr elf_head;
1.729 + int count;
1.730 + int location;
1.731 +
1.732 + fp = fopen(jvmpath, "r");
1.733 + if(fp == NULL)
1.734 + goto error;
1.735 +
1.736 + /* read in elf header */
1.737 + count = fread((void*)(&elf_head), sizeof(Elf32_Ehdr), 1, fp);
1.738 + fclose(fp);
1.739 + if(count < 1)
1.740 + goto error;
1.741 +
1.742 + /*
1.743 + * Check for running a server vm (compiled with -xarch=v8plus)
1.744 + * on a stock v8 processor. In this case, the machine type in
1.745 + * the elf header would not be included the architecture list
1.746 + * provided by the isalist command, which is turn is gotten from
1.747 + * sysinfo. This case cannot occur on 64-bit hardware and thus
1.748 + * does not have to be checked for in binaries with an LP64 data
1.749 + * model.
1.750 + */
1.751 + if(elf_head.e_machine == EM_SPARC32PLUS) {
1.752 + char buf[257]; /* recommended buffer size from sysinfo man
1.753 + page */
1.754 + long length;
1.755 + char* location;
1.756 +
1.757 + length = sysinfo(SI_ISALIST, buf, 257);
1.758 + if(length > 0) {
1.759 + location = strstr(buf, "sparcv8plus ");
1.760 + if(location == NULL) {
1.761 + fprintf(stderr, "SPARC V8 processor detected; Server compiler requires V9 or better.\n");
1.762 + fprintf(stderr, "Use Client compiler on V8 processors.\n");
1.763 + fprintf(stderr, "Could not create the Java virtual machine.\n");
1.764 + return JNI_FALSE;
1.765 + }
1.766 + }
1.767 + }
1.768 +#endif
1.769 + fprintf(stderr, "dl failure on line %d", __LINE__);
1.770 + goto error;
1.771 + }
1.772 +
1.773 + ifn->CreateJavaVM = (CreateJavaVM_t)
1.774 + dlsym(libjvm, "JNI_CreateJavaVM");
1.775 + if (ifn->CreateJavaVM == NULL)
1.776 + goto error;
1.777 +
1.778 + ifn->GetDefaultJavaVMInitArgs = (GetDefaultJavaVMInitArgs_t)
1.779 + dlsym(libjvm, "JNI_GetDefaultJavaVMInitArgs");
1.780 + if (ifn->GetDefaultJavaVMInitArgs == NULL)
1.781 + goto error;
1.782 +
1.783 + return JNI_TRUE;
1.784 +
1.785 +error:
1.786 + fprintf(stderr, "Error: failed %s, because %s\n", jvmpath, dlerror());
1.787 + return JNI_FALSE;
1.788 +#endif /* ifndef GAMMA */
1.789 +}
1.790 +
1.791 +/*
1.792 + * If app is "/foo/bin/javac", or "/foo/bin/sparcv9/javac" then put
1.793 + * "/foo" into buf.
1.794 + */
1.795 +jboolean
1.796 +GetApplicationHome(char *buf, jint bufsize)
1.797 +{
1.798 +#ifdef __linux__
1.799 + char *execname = GetExecname();
1.800 + if (execname) {
1.801 + strncpy(buf, execname, bufsize-1);
1.802 + buf[bufsize-1] = '\0';
1.803 + } else {
1.804 + return JNI_FALSE;
1.805 + }
1.806 +#else
1.807 + Dl_info dlinfo;
1.808 +
1.809 + dladdr((void *)GetApplicationHome, &dlinfo);
1.810 + if (realpath(dlinfo.dli_fname, buf) == NULL) {
1.811 + fprintf(stderr, "Error: realpath(`%s') failed.\n", dlinfo.dli_fname);
1.812 + return JNI_FALSE;
1.813 + }
1.814 +#endif
1.815 +
1.816 +#ifdef GAMMA
1.817 + {
1.818 + /* gamma launcher uses JAVA_HOME or ALT_JAVA_HOME environment variable to find JDK/JRE */
1.819 + char* java_home_var = getenv("ALT_JAVA_HOME");
1.820 + if (java_home_var == NULL) {
1.821 + java_home_var = getenv("JAVA_HOME");
1.822 + }
1.823 + if (java_home_var == NULL) {
1.824 + printf("JAVA_HOME or ALT_JAVA_HOME must point to a valid JDK/JRE to run gamma\n");
1.825 + return JNI_FALSE;
1.826 + }
1.827 + snprintf(buf, bufsize, "%s", java_home_var);
1.828 + }
1.829 +#else
1.830 + if (strrchr(buf, '/') == 0) {
1.831 + buf[0] = '\0';
1.832 + return JNI_FALSE;
1.833 + }
1.834 + *(strrchr(buf, '/')) = '\0'; /* executable file */
1.835 + if (strlen(buf) < 4 || strrchr(buf, '/') == 0) {
1.836 + buf[0] = '\0';
1.837 + return JNI_FALSE;
1.838 + }
1.839 + if (strcmp("/bin", buf + strlen(buf) - 4) != 0)
1.840 + *(strrchr(buf, '/')) = '\0'; /* sparcv9 or amd64 */
1.841 + if (strlen(buf) < 4 || strcmp("/bin", buf + strlen(buf) - 4) != 0) {
1.842 + buf[0] = '\0';
1.843 + return JNI_FALSE;
1.844 + }
1.845 + *(strrchr(buf, '/')) = '\0'; /* bin */
1.846 +#endif /* ifndef GAMMA */
1.847 +
1.848 + return JNI_TRUE;
1.849 +}
1.850 +
1.851 +
1.852 +/*
1.853 + * Return true if the named program exists
1.854 + */
1.855 +static int
1.856 +ProgramExists(char *name)
1.857 +{
1.858 + struct stat sb;
1.859 + if (stat(name, &sb) != 0) return 0;
1.860 + if (S_ISDIR(sb.st_mode)) return 0;
1.861 + return (sb.st_mode & S_IEXEC) != 0;
1.862 +}
1.863 +
1.864 +
1.865 +/*
1.866 + * Find a command in a directory, returning the path.
1.867 + */
1.868 +static char *
1.869 +Resolve(char *indir, char *cmd)
1.870 +{
1.871 + char name[PATH_MAX + 2], *real;
1.872 +
1.873 + if ((strlen(indir) + strlen(cmd) + 1) > PATH_MAX) return 0;
1.874 + sprintf(name, "%s%c%s", indir, FILE_SEPARATOR, cmd);
1.875 + if (!ProgramExists(name)) return 0;
1.876 + real = JLI_MemAlloc(PATH_MAX + 2);
1.877 + if (!realpath(name, real))
1.878 + strcpy(real, name);
1.879 + return real;
1.880 +}
1.881 +
1.882 +
1.883 +/*
1.884 + * Find a path for the executable
1.885 + */
1.886 +static char *
1.887 +FindExecName(char *program)
1.888 +{
1.889 + char cwdbuf[PATH_MAX+2];
1.890 + char *path;
1.891 + char *tmp_path;
1.892 + char *f;
1.893 + char *result = NULL;
1.894 +
1.895 + /* absolute path? */
1.896 + if (*program == FILE_SEPARATOR ||
1.897 + (FILE_SEPARATOR=='\\' && strrchr(program, ':')))
1.898 + return Resolve("", program+1);
1.899 +
1.900 + /* relative path? */
1.901 + if (strrchr(program, FILE_SEPARATOR) != 0) {
1.902 + char buf[PATH_MAX+2];
1.903 + return Resolve(getcwd(cwdbuf, sizeof(cwdbuf)), program);
1.904 + }
1.905 +
1.906 + /* from search path? */
1.907 + path = getenv("PATH");
1.908 + if (!path || !*path) path = ".";
1.909 + tmp_path = JLI_MemAlloc(strlen(path) + 2);
1.910 + strcpy(tmp_path, path);
1.911 +
1.912 + for (f=tmp_path; *f && result==0; ) {
1.913 + char *s = f;
1.914 + while (*f && (*f != PATH_SEPARATOR)) ++f;
1.915 + if (*f) *f++ = 0;
1.916 + if (*s == FILE_SEPARATOR)
1.917 + result = Resolve(s, program);
1.918 + else {
1.919 + /* relative path element */
1.920 + char dir[2*PATH_MAX];
1.921 + sprintf(dir, "%s%c%s", getcwd(cwdbuf, sizeof(cwdbuf)),
1.922 + FILE_SEPARATOR, s);
1.923 + result = Resolve(dir, program);
1.924 + }
1.925 + if (result != 0) break;
1.926 + }
1.927 +
1.928 + JLI_MemFree(tmp_path);
1.929 + return result;
1.930 +}
1.931 +
1.932 +
1.933 +/* Store the name of the executable once computed */
1.934 +static char *execname = NULL;
1.935 +
1.936 +/*
1.937 + * Compute the name of the executable
1.938 + *
1.939 + * In order to re-exec securely we need the absolute path of the
1.940 + * executable. On Solaris getexecname(3c) may not return an absolute
1.941 + * path so we use dladdr to get the filename of the executable and
1.942 + * then use realpath to derive an absolute path. From Solaris 9
1.943 + * onwards the filename returned in DL_info structure from dladdr is
1.944 + * an absolute pathname so technically realpath isn't required.
1.945 + * On Linux we read the executable name from /proc/self/exe.
1.946 + * As a fallback, and for platforms other than Solaris and Linux,
1.947 + * we use FindExecName to compute the executable name.
1.948 + */
1.949 +static char *
1.950 +SetExecname(char **argv)
1.951 +{
1.952 + char* exec_path = NULL;
1.953 +
1.954 + if (execname != NULL) /* Already determined */
1.955 + return (execname);
1.956 +
1.957 +#if defined(__sun)
1.958 + {
1.959 + Dl_info dlinfo;
1.960 + if (dladdr((void*)&SetExecname, &dlinfo)) {
1.961 + char *resolved = (char*)JLI_MemAlloc(PATH_MAX+1);
1.962 + if (resolved != NULL) {
1.963 + exec_path = realpath(dlinfo.dli_fname, resolved);
1.964 + if (exec_path == NULL) {
1.965 + JLI_MemFree(resolved);
1.966 + }
1.967 + }
1.968 + }
1.969 + }
1.970 +#elif defined(__linux__)
1.971 + {
1.972 + const char* self = "/proc/self/exe";
1.973 + char buf[PATH_MAX+1];
1.974 + int len = readlink(self, buf, PATH_MAX);
1.975 + if (len >= 0) {
1.976 + buf[len] = '\0'; /* readlink doesn't nul terminate */
1.977 + exec_path = JLI_StringDup(buf);
1.978 + }
1.979 + }
1.980 +#else /* !__sun && !__linux */
1.981 + {
1.982 + /* Not implemented */
1.983 + }
1.984 +#endif
1.985 +
1.986 + if (exec_path == NULL) {
1.987 + exec_path = FindExecName(argv[0]);
1.988 + }
1.989 + execname = exec_path;
1.990 + return exec_path;
1.991 +}
1.992 +
1.993 +/*
1.994 + * Return the name of the executable. Used in java_md.c to find the JRE area.
1.995 + */
1.996 +static char *
1.997 +GetExecname() {
1.998 + return execname;
1.999 +}
1.1000 +
1.1001 +void ReportErrorMessage(char * message, jboolean always) {
1.1002 + if (always) {
1.1003 + fprintf(stderr, "%s\n", message);
1.1004 + }
1.1005 +}
1.1006 +
1.1007 +void ReportErrorMessage2(char * format, char * string, jboolean always) {
1.1008 + if (always) {
1.1009 + fprintf(stderr, format, string);
1.1010 + fprintf(stderr, "\n");
1.1011 + }
1.1012 +}
1.1013 +
1.1014 +void ReportExceptionDescription(JNIEnv * env) {
1.1015 + (*env)->ExceptionDescribe(env);
1.1016 +}
1.1017 +
1.1018 +/*
1.1019 + * Return JNI_TRUE for an option string that has no effect but should
1.1020 + * _not_ be passed on to the vm; return JNI_FALSE otherwise. On
1.1021 + * Solaris SPARC, this screening needs to be done if:
1.1022 + * 1) LD_LIBRARY_PATH does _not_ need to be reset and
1.1023 + * 2) -d32 or -d64 is passed to a binary with a matching data model
1.1024 + * (the exec in SetLibraryPath removes -d<n> options and points the
1.1025 + * exec to the proper binary). When this exec is not done, these options
1.1026 + * would end up getting passed onto the vm.
1.1027 + */
1.1028 +jboolean RemovableMachineDependentOption(char * option) {
1.1029 + /*
1.1030 + * Unconditionally remove both -d32 and -d64 options since only
1.1031 + * the last such options has an effect; e.g.
1.1032 + * java -d32 -d64 -d32 -version
1.1033 + * is equivalent to
1.1034 + * java -d32 -version
1.1035 + */
1.1036 +
1.1037 + if( (strcmp(option, "-d32") == 0 ) ||
1.1038 + (strcmp(option, "-d64") == 0 ))
1.1039 + return JNI_TRUE;
1.1040 + else
1.1041 + return JNI_FALSE;
1.1042 +}
1.1043 +
1.1044 +void PrintMachineDependentOptions() {
1.1045 + fprintf(stdout,
1.1046 + " -d32 use a 32-bit data model if available\n"
1.1047 + "\n"
1.1048 + " -d64 use a 64-bit data model if available\n");
1.1049 + return;
1.1050 +}
1.1051 +
1.1052 +#ifndef GAMMA
1.1053 +/*
1.1054 + * The following methods (down to ServerClassMachine()) answer
1.1055 + * the question about whether a machine is a "server-class"
1.1056 + * machine. A server-class machine is loosely defined as one
1.1057 + * with 2 or more processors and 2 gigabytes or more physical
1.1058 + * memory. The definition of a processor is a physical package,
1.1059 + * not a hyperthreaded chip masquerading as a multi-processor.
1.1060 + * The definition of memory is also somewhat fuzzy, since x86
1.1061 + * machines seem not to report all the memory in their DIMMs, we
1.1062 + * think because of memory mapping of graphics cards, etc.
1.1063 + *
1.1064 + * This code is somewhat more confused with #ifdef's than we'd
1.1065 + * like because this file is used by both Solaris and Linux
1.1066 + * platforms, and so needs to be parameterized for SPARC and
1.1067 + * i586 hardware. The other Linux platforms (amd64 and ia64)
1.1068 + * don't even ask this question, because they only come with
1.1069 + * server JVMs. */
1.1070 +
1.1071 +# define KB (1024UL)
1.1072 +# define MB (1024UL * KB)
1.1073 +# define GB (1024UL * MB)
1.1074 +
1.1075 +/* Compute physical memory by asking the OS */
1.1076 +uint64_t
1.1077 +physical_memory(void) {
1.1078 + const uint64_t pages = (uint64_t) sysconf(_SC_PHYS_PAGES);
1.1079 + const uint64_t page_size = (uint64_t) sysconf(_SC_PAGESIZE);
1.1080 + const uint64_t result = pages * page_size;
1.1081 +# define UINT64_FORMAT "%" PRIu64
1.1082 +
1.1083 + if (_launcher_debug) {
1.1084 + printf("pages: " UINT64_FORMAT
1.1085 + " page_size: " UINT64_FORMAT
1.1086 + " physical memory: " UINT64_FORMAT " (%.3fGB)\n",
1.1087 + pages, page_size, result, result / (double) GB);
1.1088 + }
1.1089 + return result;
1.1090 +}
1.1091 +
1.1092 +#if defined(__sun) && defined(__sparc)
1.1093 +
1.1094 +/* Methods for solaris-sparc: these are easy. */
1.1095 +
1.1096 +/* Ask the OS how many processors there are. */
1.1097 +unsigned long
1.1098 +physical_processors(void) {
1.1099 + const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF);
1.1100 +
1.1101 + if (_launcher_debug) {
1.1102 + printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
1.1103 + }
1.1104 + return sys_processors;
1.1105 +}
1.1106 +
1.1107 +/* The solaris-sparc version of the "server-class" predicate. */
1.1108 +jboolean
1.1109 +solaris_sparc_ServerClassMachine(void) {
1.1110 + jboolean result = JNI_FALSE;
1.1111 + /* How big is a server class machine? */
1.1112 + const unsigned long server_processors = 2UL;
1.1113 + const uint64_t server_memory = 2UL * GB;
1.1114 + const uint64_t actual_memory = physical_memory();
1.1115 +
1.1116 + /* Is this a server class machine? */
1.1117 + if (actual_memory >= server_memory) {
1.1118 + const unsigned long actual_processors = physical_processors();
1.1119 + if (actual_processors >= server_processors) {
1.1120 + result = JNI_TRUE;
1.1121 + }
1.1122 + }
1.1123 + if (_launcher_debug) {
1.1124 + printf("solaris_" LIBARCHNAME "_ServerClassMachine: %s\n",
1.1125 + (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE"));
1.1126 + }
1.1127 + return result;
1.1128 +}
1.1129 +
1.1130 +#endif /* __sun && __sparc */
1.1131 +
1.1132 +#if defined(__sun) && defined(i586)
1.1133 +
1.1134 +/*
1.1135 + * A utility method for asking the CPU about itself.
1.1136 + * There's a corresponding version of linux-i586
1.1137 + * because the compilers are different.
1.1138 + */
1.1139 +void
1.1140 +get_cpuid(uint32_t arg,
1.1141 + uint32_t* eaxp,
1.1142 + uint32_t* ebxp,
1.1143 + uint32_t* ecxp,
1.1144 + uint32_t* edxp) {
1.1145 +#ifdef _LP64
1.1146 + asm(
1.1147 + /* rbx is a callee-saved register */
1.1148 + " movq %rbx, %r11 \n"
1.1149 + /* rdx and rcx are 3rd and 4th argument registers */
1.1150 + " movq %rdx, %r10 \n"
1.1151 + " movq %rcx, %r9 \n"
1.1152 + " movl %edi, %eax \n"
1.1153 + " cpuid \n"
1.1154 + " movl %eax, (%rsi)\n"
1.1155 + " movl %ebx, (%r10)\n"
1.1156 + " movl %ecx, (%r9) \n"
1.1157 + " movl %edx, (%r8) \n"
1.1158 + /* Restore rbx */
1.1159 + " movq %r11, %rbx");
1.1160 +#else
1.1161 + /* EBX is a callee-saved register */
1.1162 + asm(" pushl %ebx");
1.1163 + /* Need ESI for storing through arguments */
1.1164 + asm(" pushl %esi");
1.1165 + asm(" movl 8(%ebp), %eax \n"
1.1166 + " cpuid \n"
1.1167 + " movl 12(%ebp), %esi \n"
1.1168 + " movl %eax, (%esi) \n"
1.1169 + " movl 16(%ebp), %esi \n"
1.1170 + " movl %ebx, (%esi) \n"
1.1171 + " movl 20(%ebp), %esi \n"
1.1172 + " movl %ecx, (%esi) \n"
1.1173 + " movl 24(%ebp), %esi \n"
1.1174 + " movl %edx, (%esi) ");
1.1175 + /* Restore ESI and EBX */
1.1176 + asm(" popl %esi");
1.1177 + /* Restore EBX */
1.1178 + asm(" popl %ebx");
1.1179 +#endif
1.1180 +}
1.1181 +
1.1182 +#endif /* __sun && i586 */
1.1183 +
1.1184 +#if defined(__linux__) && defined(i586)
1.1185 +
1.1186 +/*
1.1187 + * A utility method for asking the CPU about itself.
1.1188 + * There's a corresponding version of solaris-i586
1.1189 + * because the compilers are different.
1.1190 + */
1.1191 +void
1.1192 +get_cpuid(uint32_t arg,
1.1193 + uint32_t* eaxp,
1.1194 + uint32_t* ebxp,
1.1195 + uint32_t* ecxp,
1.1196 + uint32_t* edxp) {
1.1197 +#ifdef _LP64
1.1198 + __asm__ volatile (/* Instructions */
1.1199 + " movl %4, %%eax \n"
1.1200 + " cpuid \n"
1.1201 + " movl %%eax, (%0)\n"
1.1202 + " movl %%ebx, (%1)\n"
1.1203 + " movl %%ecx, (%2)\n"
1.1204 + " movl %%edx, (%3)\n"
1.1205 + : /* Outputs */
1.1206 + : /* Inputs */
1.1207 + "r" (eaxp),
1.1208 + "r" (ebxp),
1.1209 + "r" (ecxp),
1.1210 + "r" (edxp),
1.1211 + "r" (arg)
1.1212 + : /* Clobbers */
1.1213 + "%rax", "%rbx", "%rcx", "%rdx", "memory"
1.1214 + );
1.1215 +#else
1.1216 + uint32_t value_of_eax = 0;
1.1217 + uint32_t value_of_ebx = 0;
1.1218 + uint32_t value_of_ecx = 0;
1.1219 + uint32_t value_of_edx = 0;
1.1220 + __asm__ volatile (/* Instructions */
1.1221 + /* ebx is callee-save, so push it */
1.1222 + " pushl %%ebx \n"
1.1223 + " movl %4, %%eax \n"
1.1224 + " cpuid \n"
1.1225 + " movl %%eax, %0 \n"
1.1226 + " movl %%ebx, %1 \n"
1.1227 + " movl %%ecx, %2 \n"
1.1228 + " movl %%edx, %3 \n"
1.1229 + /* restore ebx */
1.1230 + " popl %%ebx \n"
1.1231 +
1.1232 + : /* Outputs */
1.1233 + "=m" (value_of_eax),
1.1234 + "=m" (value_of_ebx),
1.1235 + "=m" (value_of_ecx),
1.1236 + "=m" (value_of_edx)
1.1237 + : /* Inputs */
1.1238 + "m" (arg)
1.1239 + : /* Clobbers */
1.1240 + "%eax", "%ecx", "%edx"
1.1241 + );
1.1242 + *eaxp = value_of_eax;
1.1243 + *ebxp = value_of_ebx;
1.1244 + *ecxp = value_of_ecx;
1.1245 + *edxp = value_of_edx;
1.1246 +#endif
1.1247 +}
1.1248 +
1.1249 +#endif /* __linux__ && i586 */
1.1250 +
1.1251 +#ifdef i586
1.1252 +/*
1.1253 + * Routines shared by solaris-i586 and linux-i586.
1.1254 + */
1.1255 +
1.1256 +enum HyperThreadingSupport_enum {
1.1257 + hts_supported = 1,
1.1258 + hts_too_soon_to_tell = 0,
1.1259 + hts_not_supported = -1,
1.1260 + hts_not_pentium4 = -2,
1.1261 + hts_not_intel = -3
1.1262 +};
1.1263 +typedef enum HyperThreadingSupport_enum HyperThreadingSupport;
1.1264 +
1.1265 +/* Determine if hyperthreading is supported */
1.1266 +HyperThreadingSupport
1.1267 +hyperthreading_support(void) {
1.1268 + HyperThreadingSupport result = hts_too_soon_to_tell;
1.1269 + /* Bits 11 through 8 is family processor id */
1.1270 +# define FAMILY_ID_SHIFT 8
1.1271 +# define FAMILY_ID_MASK 0xf
1.1272 + /* Bits 23 through 20 is extended family processor id */
1.1273 +# define EXT_FAMILY_ID_SHIFT 20
1.1274 +# define EXT_FAMILY_ID_MASK 0xf
1.1275 + /* Pentium 4 family processor id */
1.1276 +# define PENTIUM4_FAMILY_ID 0xf
1.1277 + /* Bit 28 indicates Hyper-Threading Technology support */
1.1278 +# define HT_BIT_SHIFT 28
1.1279 +# define HT_BIT_MASK 1
1.1280 + uint32_t vendor_id[3] = { 0U, 0U, 0U };
1.1281 + uint32_t value_of_eax = 0U;
1.1282 + uint32_t value_of_edx = 0U;
1.1283 + uint32_t dummy = 0U;
1.1284 +
1.1285 + /* Yes, this is supposed to be [0], [2], [1] */
1.1286 + get_cpuid(0, &dummy, &vendor_id[0], &vendor_id[2], &vendor_id[1]);
1.1287 + if (_launcher_debug) {
1.1288 + printf("vendor: %c %c %c %c %c %c %c %c %c %c %c %c \n",
1.1289 + ((vendor_id[0] >> 0) & 0xff),
1.1290 + ((vendor_id[0] >> 8) & 0xff),
1.1291 + ((vendor_id[0] >> 16) & 0xff),
1.1292 + ((vendor_id[0] >> 24) & 0xff),
1.1293 + ((vendor_id[1] >> 0) & 0xff),
1.1294 + ((vendor_id[1] >> 8) & 0xff),
1.1295 + ((vendor_id[1] >> 16) & 0xff),
1.1296 + ((vendor_id[1] >> 24) & 0xff),
1.1297 + ((vendor_id[2] >> 0) & 0xff),
1.1298 + ((vendor_id[2] >> 8) & 0xff),
1.1299 + ((vendor_id[2] >> 16) & 0xff),
1.1300 + ((vendor_id[2] >> 24) & 0xff));
1.1301 + }
1.1302 + get_cpuid(1, &value_of_eax, &dummy, &dummy, &value_of_edx);
1.1303 + if (_launcher_debug) {
1.1304 + printf("value_of_eax: 0x%x value_of_edx: 0x%x\n",
1.1305 + value_of_eax, value_of_edx);
1.1306 + }
1.1307 + if ((((value_of_eax >> FAMILY_ID_SHIFT) & FAMILY_ID_MASK) == PENTIUM4_FAMILY_ID) ||
1.1308 + (((value_of_eax >> EXT_FAMILY_ID_SHIFT) & EXT_FAMILY_ID_MASK) != 0)) {
1.1309 + if ((((vendor_id[0] >> 0) & 0xff) == 'G') &&
1.1310 + (((vendor_id[0] >> 8) & 0xff) == 'e') &&
1.1311 + (((vendor_id[0] >> 16) & 0xff) == 'n') &&
1.1312 + (((vendor_id[0] >> 24) & 0xff) == 'u') &&
1.1313 + (((vendor_id[1] >> 0) & 0xff) == 'i') &&
1.1314 + (((vendor_id[1] >> 8) & 0xff) == 'n') &&
1.1315 + (((vendor_id[1] >> 16) & 0xff) == 'e') &&
1.1316 + (((vendor_id[1] >> 24) & 0xff) == 'I') &&
1.1317 + (((vendor_id[2] >> 0) & 0xff) == 'n') &&
1.1318 + (((vendor_id[2] >> 8) & 0xff) == 't') &&
1.1319 + (((vendor_id[2] >> 16) & 0xff) == 'e') &&
1.1320 + (((vendor_id[2] >> 24) & 0xff) == 'l')) {
1.1321 + if (((value_of_edx >> HT_BIT_SHIFT) & HT_BIT_MASK) == HT_BIT_MASK) {
1.1322 + if (_launcher_debug) {
1.1323 + printf("Hyperthreading supported\n");
1.1324 + }
1.1325 + result = hts_supported;
1.1326 + } else {
1.1327 + if (_launcher_debug) {
1.1328 + printf("Hyperthreading not supported\n");
1.1329 + }
1.1330 + result = hts_not_supported;
1.1331 + }
1.1332 + } else {
1.1333 + if (_launcher_debug) {
1.1334 + printf("Not GenuineIntel\n");
1.1335 + }
1.1336 + result = hts_not_intel;
1.1337 + }
1.1338 + } else {
1.1339 + if (_launcher_debug) {
1.1340 + printf("not Pentium 4 or extended\n");
1.1341 + }
1.1342 + result = hts_not_pentium4;
1.1343 + }
1.1344 + return result;
1.1345 +}
1.1346 +
1.1347 +/* Determine how many logical processors there are per CPU */
1.1348 +unsigned int
1.1349 +logical_processors_per_package(void) {
1.1350 + /*
1.1351 + * After CPUID with EAX==1, register EBX bits 23 through 16
1.1352 + * indicate the number of logical processors per package
1.1353 + */
1.1354 +# define NUM_LOGICAL_SHIFT 16
1.1355 +# define NUM_LOGICAL_MASK 0xff
1.1356 + unsigned int result = 1U;
1.1357 + const HyperThreadingSupport hyperthreading = hyperthreading_support();
1.1358 +
1.1359 + if (hyperthreading == hts_supported) {
1.1360 + uint32_t value_of_ebx = 0U;
1.1361 + uint32_t dummy = 0U;
1.1362 +
1.1363 + get_cpuid(1, &dummy, &value_of_ebx, &dummy, &dummy);
1.1364 + result = (value_of_ebx >> NUM_LOGICAL_SHIFT) & NUM_LOGICAL_MASK;
1.1365 + if (_launcher_debug) {
1.1366 + printf("logical processors per package: %u\n", result);
1.1367 + }
1.1368 + }
1.1369 + return result;
1.1370 +}
1.1371 +
1.1372 +/* Compute the number of physical processors, not logical processors */
1.1373 +unsigned long
1.1374 +physical_processors(void) {
1.1375 + const long sys_processors = sysconf(_SC_NPROCESSORS_CONF);
1.1376 + unsigned long result = sys_processors;
1.1377 +
1.1378 + if (_launcher_debug) {
1.1379 + printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
1.1380 + }
1.1381 + if (sys_processors > 1) {
1.1382 + unsigned int logical_processors = logical_processors_per_package();
1.1383 + if (logical_processors > 1) {
1.1384 + result = (unsigned long) sys_processors / logical_processors;
1.1385 + }
1.1386 + }
1.1387 + if (_launcher_debug) {
1.1388 + printf("physical processors: %lu\n", result);
1.1389 + }
1.1390 + return result;
1.1391 +}
1.1392 +
1.1393 +#endif /* i586 */
1.1394 +
1.1395 +#if defined(__sun) && defined(i586)
1.1396 +
1.1397 +/* The definition of a server-class machine for solaris-i586/amd64 */
1.1398 +jboolean
1.1399 +solaris_i586_ServerClassMachine(void) {
1.1400 + jboolean result = JNI_FALSE;
1.1401 + /* How big is a server class machine? */
1.1402 + const unsigned long server_processors = 2UL;
1.1403 + const uint64_t server_memory = 2UL * GB;
1.1404 + /*
1.1405 + * We seem not to get our full complement of memory.
1.1406 + * We allow some part (1/8?) of the memory to be "missing",
1.1407 + * based on the sizes of DIMMs, and maybe graphics cards.
1.1408 + */
1.1409 + const uint64_t missing_memory = 256UL * MB;
1.1410 + const uint64_t actual_memory = physical_memory();
1.1411 +
1.1412 + /* Is this a server class machine? */
1.1413 + if (actual_memory >= (server_memory - missing_memory)) {
1.1414 + const unsigned long actual_processors = physical_processors();
1.1415 + if (actual_processors >= server_processors) {
1.1416 + result = JNI_TRUE;
1.1417 + }
1.1418 + }
1.1419 + if (_launcher_debug) {
1.1420 + printf("solaris_" LIBARCHNAME "_ServerClassMachine: %s\n",
1.1421 + (result == JNI_TRUE ? "true" : "false"));
1.1422 + }
1.1423 + return result;
1.1424 +}
1.1425 +
1.1426 +#endif /* __sun && i586 */
1.1427 +
1.1428 +#if defined(__linux__) && defined(i586)
1.1429 +
1.1430 +/* The definition of a server-class machine for linux-i586 */
1.1431 +jboolean
1.1432 +linux_i586_ServerClassMachine(void) {
1.1433 + jboolean result = JNI_FALSE;
1.1434 + /* How big is a server class machine? */
1.1435 + const unsigned long server_processors = 2UL;
1.1436 + const uint64_t server_memory = 2UL * GB;
1.1437 + /*
1.1438 + * We seem not to get our full complement of memory.
1.1439 + * We allow some part (1/8?) of the memory to be "missing",
1.1440 + * based on the sizes of DIMMs, and maybe graphics cards.
1.1441 + */
1.1442 + const uint64_t missing_memory = 256UL * MB;
1.1443 + const uint64_t actual_memory = physical_memory();
1.1444 +
1.1445 + /* Is this a server class machine? */
1.1446 + if (actual_memory >= (server_memory - missing_memory)) {
1.1447 + const unsigned long actual_processors = physical_processors();
1.1448 + if (actual_processors >= server_processors) {
1.1449 + result = JNI_TRUE;
1.1450 + }
1.1451 + }
1.1452 + if (_launcher_debug) {
1.1453 + printf("linux_" LIBARCHNAME "_ServerClassMachine: %s\n",
1.1454 + (result == JNI_TRUE ? "true" : "false"));
1.1455 + }
1.1456 + return result;
1.1457 +}
1.1458 +
1.1459 +#endif /* __linux__ && i586 */
1.1460 +
1.1461 +/* Dispatch to the platform-specific definition of "server-class" */
1.1462 +jboolean
1.1463 +ServerClassMachine(void) {
1.1464 + jboolean result = JNI_FALSE;
1.1465 +#if defined(NEVER_ACT_AS_SERVER_CLASS_MACHINE)
1.1466 + result = JNI_FALSE;
1.1467 +#elif defined(ALWAYS_ACT_AS_SERVER_CLASS_MACHINE)
1.1468 + result = JNI_TRUE;
1.1469 +#elif defined(__sun) && defined(__sparc)
1.1470 + result = solaris_sparc_ServerClassMachine();
1.1471 +#elif defined(__sun) && defined(i586)
1.1472 + result = solaris_i586_ServerClassMachine();
1.1473 +#elif defined(__linux__) && defined(i586)
1.1474 + result = linux_i586_ServerClassMachine();
1.1475 +#else
1.1476 + if (_launcher_debug) {
1.1477 + printf("ServerClassMachine: returns default value of %s\n",
1.1478 + (result == JNI_TRUE ? "true" : "false"));
1.1479 + }
1.1480 +#endif
1.1481 + return result;
1.1482 +}
1.1483 +
1.1484 +/*
1.1485 + * Since using the file system as a registry is a bit risky, perform
1.1486 + * additional sanity checks on the identified directory to validate
1.1487 + * it as a valid jre/sdk.
1.1488 + *
1.1489 + * Return 0 if the tests fail; otherwise return non-zero (true).
1.1490 + *
1.1491 + * Note that checking for anything more than the existence of an
1.1492 + * executable object at bin/java relative to the path being checked
1.1493 + * will break the regression tests.
1.1494 + */
1.1495 +static int
1.1496 +CheckSanity(char *path, char *dir)
1.1497 +{
1.1498 + char buffer[PATH_MAX];
1.1499 +
1.1500 + if (strlen(path) + strlen(dir) + 11 > PATH_MAX)
1.1501 + return (0); /* Silently reject "impossibly" long paths */
1.1502 +
1.1503 + (void)strcat(strcat(strcat(strcpy(buffer, path), "/"), dir), "/bin/java");
1.1504 + return ((access(buffer, X_OK) == 0) ? 1 : 0);
1.1505 +}
1.1506 +
1.1507 +/*
1.1508 + * Determine if there is an acceptable JRE in the directory dirname.
1.1509 + * Upon locating the "best" one, return a fully qualified path to
1.1510 + * it. "Best" is defined as the most advanced JRE meeting the
1.1511 + * constraints contained in the manifest_info. If no JRE in this
1.1512 + * directory meets the constraints, return NULL.
1.1513 + *
1.1514 + * Note that we don't check for errors in reading the directory
1.1515 + * (which would be done by checking errno). This is because it
1.1516 + * doesn't matter if we get an error reading the directory, or
1.1517 + * we just don't find anything interesting in the directory. We
1.1518 + * just return NULL in either case.
1.1519 + *
1.1520 + * The historical names of j2sdk and j2re were changed to jdk and
1.1521 + * jre respecively as part of the 1.5 rebranding effort. Since the
1.1522 + * former names are legacy on Linux, they must be recognized for
1.1523 + * all time. Fortunately, this is a minor cost.
1.1524 + */
1.1525 +static char
1.1526 +*ProcessDir(manifest_info *info, char *dirname)
1.1527 +{
1.1528 + DIR *dirp;
1.1529 + struct dirent *dp;
1.1530 + char *best = NULL;
1.1531 + int offset;
1.1532 + int best_offset = 0;
1.1533 + char *ret_str = NULL;
1.1534 + char buffer[PATH_MAX];
1.1535 +
1.1536 + if ((dirp = opendir(dirname)) == NULL)
1.1537 + return (NULL);
1.1538 +
1.1539 + do {
1.1540 + if ((dp = readdir(dirp)) != NULL) {
1.1541 + offset = 0;
1.1542 + if ((strncmp(dp->d_name, "jre", 3) == 0) ||
1.1543 + (strncmp(dp->d_name, "jdk", 3) == 0))
1.1544 + offset = 3;
1.1545 + else if (strncmp(dp->d_name, "j2re", 4) == 0)
1.1546 + offset = 4;
1.1547 + else if (strncmp(dp->d_name, "j2sdk", 5) == 0)
1.1548 + offset = 5;
1.1549 + if (offset > 0) {
1.1550 + if ((JLI_AcceptableRelease(dp->d_name + offset,
1.1551 + info->jre_version)) && CheckSanity(dirname, dp->d_name))
1.1552 + if ((best == NULL) || (JLI_ExactVersionId(
1.1553 + dp->d_name + offset, best + best_offset) > 0)) {
1.1554 + if (best != NULL)
1.1555 + JLI_MemFree(best);
1.1556 + best = JLI_StringDup(dp->d_name);
1.1557 + best_offset = offset;
1.1558 + }
1.1559 + }
1.1560 + }
1.1561 + } while (dp != NULL);
1.1562 + (void) closedir(dirp);
1.1563 + if (best == NULL)
1.1564 + return (NULL);
1.1565 + else {
1.1566 + ret_str = JLI_MemAlloc(strlen(dirname) + strlen(best) + 2);
1.1567 + ret_str = strcat(strcat(strcpy(ret_str, dirname), "/"), best);
1.1568 + JLI_MemFree(best);
1.1569 + return (ret_str);
1.1570 + }
1.1571 +}
1.1572 +
1.1573 +/*
1.1574 + * This is the global entry point. It examines the host for the optimal
1.1575 + * JRE to be used by scanning a set of directories. The set of directories
1.1576 + * is platform dependent and can be overridden by the environment
1.1577 + * variable JAVA_VERSION_PATH.
1.1578 + *
1.1579 + * This routine itself simply determines the set of appropriate
1.1580 + * directories before passing control onto ProcessDir().
1.1581 + */
1.1582 +char*
1.1583 +LocateJRE(manifest_info* info)
1.1584 +{
1.1585 + char *path;
1.1586 + char *home;
1.1587 + char *target = NULL;
1.1588 + char *dp;
1.1589 + char *cp;
1.1590 +
1.1591 + /*
1.1592 + * Start by getting JAVA_VERSION_PATH
1.1593 + */
1.1594 + if (info->jre_restrict_search)
1.1595 + path = JLI_StringDup(system_dir);
1.1596 + else if ((path = getenv("JAVA_VERSION_PATH")) != NULL)
1.1597 + path = JLI_StringDup(path);
1.1598 + else
1.1599 + if ((home = getenv("HOME")) != NULL) {
1.1600 + path = (char *)JLI_MemAlloc(strlen(home) + strlen(system_dir) +
1.1601 + strlen(user_dir) + 2);
1.1602 + path = strcat(strcat(strcat(strcpy(path, home),
1.1603 + user_dir), ":"), system_dir);
1.1604 + } else
1.1605 + path = JLI_StringDup(system_dir);
1.1606 +
1.1607 + /*
1.1608 + * Step through each directory on the path. Terminate the scan with
1.1609 + * the first directory with an acceptable JRE.
1.1610 + */
1.1611 + cp = dp = path;
1.1612 + while (dp != NULL) {
1.1613 + cp = strchr(dp, (int)':');
1.1614 + if (cp != NULL)
1.1615 + *cp = (char)NULL;
1.1616 + if ((target = ProcessDir(info, dp)) != NULL)
1.1617 + break;
1.1618 + dp = cp;
1.1619 + if (dp != NULL)
1.1620 + dp++;
1.1621 + }
1.1622 + JLI_MemFree(path);
1.1623 + return (target);
1.1624 +}
1.1625 +
1.1626 +/*
1.1627 + * Given a path to a jre to execute, this routine checks if this process
1.1628 + * is indeed that jre. If not, it exec's that jre.
1.1629 + *
1.1630 + * We want to actually check the paths rather than just the version string
1.1631 + * built into the executable, so that given version specification (and
1.1632 + * JAVA_VERSION_PATH) will yield the exact same Java environment, regardless
1.1633 + * of the version of the arbitrary launcher we start with.
1.1634 + */
1.1635 +void
1.1636 +ExecJRE(char *jre, char **argv)
1.1637 +{
1.1638 + char wanted[PATH_MAX];
1.1639 + char *execname;
1.1640 + char *progname;
1.1641 +
1.1642 + /*
1.1643 + * Resolve the real path to the directory containing the selected JRE.
1.1644 + */
1.1645 + if (realpath(jre, wanted) == NULL) {
1.1646 + fprintf(stderr, "Unable to resolve %s\n", jre);
1.1647 + exit(1);
1.1648 + }
1.1649 +
1.1650 + /*
1.1651 + * Resolve the real path to the currently running launcher.
1.1652 + */
1.1653 + execname = SetExecname(argv);
1.1654 + if (execname == NULL) {
1.1655 + fprintf(stderr, "Unable to resolve current executable\n");
1.1656 + exit(1);
1.1657 + }
1.1658 +
1.1659 + /*
1.1660 + * If the path to the selected JRE directory is a match to the initial
1.1661 + * portion of the path to the currently executing JRE, we have a winner!
1.1662 + * If so, just return.
1.1663 + */
1.1664 + if (strncmp(wanted, execname, strlen(wanted)) == 0)
1.1665 + return; /* I am the droid you were looking for */
1.1666 +
1.1667 + /*
1.1668 + * If this isn't the selected version, exec the selected version.
1.1669 + */
1.1670 +#ifdef JAVA_ARGS /* javac, jar and friends. */
1.1671 + progname = "java";
1.1672 +#else /* java, oldjava, javaw and friends */
1.1673 +#ifdef PROGNAME
1.1674 + progname = PROGNAME;
1.1675 +#else
1.1676 + progname = *argv;
1.1677 + if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) {
1.1678 + progname = s + 1;
1.1679 + }
1.1680 +#endif /* PROGNAME */
1.1681 +#endif /* JAVA_ARGS */
1.1682 +
1.1683 + /*
1.1684 + * This should never happen (because of the selection code in SelectJRE),
1.1685 + * but check for "impossibly" long path names just because buffer overruns
1.1686 + * can be so deadly.
1.1687 + */
1.1688 + if (strlen(wanted) + strlen(progname) + 6 > PATH_MAX) {
1.1689 + fprintf(stderr, "Path length exceeds maximum length (PATH_MAX)\n");
1.1690 + exit(1);
1.1691 + }
1.1692 +
1.1693 + /*
1.1694 + * Construct the path and exec it.
1.1695 + */
1.1696 + (void)strcat(strcat(wanted, "/bin/"), progname);
1.1697 + argv[0] = progname;
1.1698 + if (_launcher_debug) {
1.1699 + int i;
1.1700 + printf("ReExec Command: %s (%s)\n", wanted, argv[0]);
1.1701 + printf("ReExec Args:");
1.1702 + for (i = 1; argv[i] != NULL; i++)
1.1703 + printf(" %s", argv[i]);
1.1704 + printf("\n");
1.1705 + }
1.1706 + (void)fflush(stdout);
1.1707 + (void)fflush(stderr);
1.1708 + execv(wanted, argv);
1.1709 + perror("execv()");
1.1710 + fprintf(stderr, "Exec of %s failed\n", wanted);
1.1711 + exit(1);
1.1712 +}
1.1713 +#endif /* ifndef GAMMA */
1.1714 +
1.1715 +/*
1.1716 + * "Borrowed" from Solaris 10 where the unsetenv() function is being added
1.1717 + * to libc thanks to SUSv3 (Standard Unix Specification, version 3). As
1.1718 + * such, in the fullness of time this will appear in libc on all relevant
1.1719 + * Solaris/Linux platforms and maybe even the Windows platform. At that
1.1720 + * time, this stub can be removed.
1.1721 + *
1.1722 + * This implementation removes the environment locking for multithreaded
1.1723 + * applications. (We don't have access to these mutexes within libc and
1.1724 + * the launcher isn't multithreaded.) Note that what remains is platform
1.1725 + * independent, because it only relies on attributes that a POSIX environment
1.1726 + * defines.
1.1727 + *
1.1728 + * Returns 0 on success, -1 on failure.
1.1729 + *
1.1730 + * Also removed was the setting of errno. The only value of errno set
1.1731 + * was EINVAL ("Invalid Argument").
1.1732 + */
1.1733 +
1.1734 +/*
1.1735 + * s1(environ) is name=value
1.1736 + * s2(name) is name(not the form of name=value).
1.1737 + * if names match, return value of 1, else return 0
1.1738 + */
1.1739 +static int
1.1740 +match_noeq(const char *s1, const char *s2)
1.1741 +{
1.1742 + while (*s1 == *s2++) {
1.1743 + if (*s1++ == '=')
1.1744 + return (1);
1.1745 + }
1.1746 + if (*s1 == '=' && s2[-1] == '\0')
1.1747 + return (1);
1.1748 + return (0);
1.1749 +}
1.1750 +
1.1751 +/*
1.1752 + * added for SUSv3 standard
1.1753 + *
1.1754 + * Delete entry from environ.
1.1755 + * Do not free() memory! Other threads may be using it.
1.1756 + * Keep it around forever.
1.1757 + */
1.1758 +static int
1.1759 +borrowed_unsetenv(const char *name)
1.1760 +{
1.1761 + long idx; /* index into environ */
1.1762 +
1.1763 + if (name == NULL || *name == '\0' ||
1.1764 + strchr(name, '=') != NULL) {
1.1765 + return (-1);
1.1766 + }
1.1767 +
1.1768 + for (idx = 0; environ[idx] != NULL; idx++) {
1.1769 + if (match_noeq(environ[idx], name))
1.1770 + break;
1.1771 + }
1.1772 + if (environ[idx] == NULL) {
1.1773 + /* name not found but still a success */
1.1774 + return (0);
1.1775 + }
1.1776 + /* squeeze up one entry */
1.1777 + do {
1.1778 + environ[idx] = environ[idx+1];
1.1779 + } while (environ[++idx] != NULL);
1.1780 +
1.1781 + return (0);
1.1782 +}
1.1783 +/* --- End of "borrowed" code --- */
1.1784 +
1.1785 +/*
1.1786 + * Wrapper for unsetenv() function.
1.1787 + */
1.1788 +int
1.1789 +UnsetEnv(char *name)
1.1790 +{
1.1791 + return(borrowed_unsetenv(name));
1.1792 +}
1.1793 +
1.1794 +/* --- Splash Screen shared library support --- */
1.1795 +
1.1796 +static const char* SPLASHSCREEN_SO = "libsplashscreen.so";
1.1797 +
1.1798 +static void* hSplashLib = NULL;
1.1799 +
1.1800 +void* SplashProcAddress(const char* name) {
1.1801 + if (!hSplashLib) {
1.1802 + hSplashLib = dlopen(SPLASHSCREEN_SO, RTLD_LAZY | RTLD_GLOBAL);
1.1803 + }
1.1804 + if (hSplashLib) {
1.1805 + void* sym = dlsym(hSplashLib, name);
1.1806 + return sym;
1.1807 + } else {
1.1808 + return NULL;
1.1809 + }
1.1810 +}
1.1811 +
1.1812 +void SplashFreeLibrary() {
1.1813 + if (hSplashLib) {
1.1814 + dlclose(hSplashLib);
1.1815 + hSplashLib = NULL;
1.1816 + }
1.1817 +}
1.1818 +
1.1819 +const char *
1.1820 +jlong_format_specifier() {
1.1821 + return "%lld";
1.1822 +}
1.1823 +
1.1824 +/*
1.1825 + * Block current thread and continue execution in a new thread
1.1826 + */
1.1827 +int
1.1828 +ContinueInNewThread(int (JNICALL *continuation)(void *), jlong stack_size, void * args) {
1.1829 + int rslt;
1.1830 +#ifdef __linux__
1.1831 + pthread_t tid;
1.1832 + pthread_attr_t attr;
1.1833 + pthread_attr_init(&attr);
1.1834 + pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
1.1835 +
1.1836 + if (stack_size > 0) {
1.1837 + pthread_attr_setstacksize(&attr, stack_size);
1.1838 + }
1.1839 +
1.1840 + if (pthread_create(&tid, &attr, (void *(*)(void*))continuation, (void*)args) == 0) {
1.1841 + void * tmp;
1.1842 + pthread_join(tid, &tmp);
1.1843 + rslt = (int)tmp;
1.1844 + } else {
1.1845 + /*
1.1846 + * Continue execution in current thread if for some reason (e.g. out of
1.1847 + * memory/LWP) a new thread can't be created. This will likely fail
1.1848 + * later in continuation as JNI_CreateJavaVM needs to create quite a
1.1849 + * few new threads, anyway, just give it a try..
1.1850 + */
1.1851 + rslt = continuation(args);
1.1852 + }
1.1853 +
1.1854 + pthread_attr_destroy(&attr);
1.1855 +#else
1.1856 + thread_t tid;
1.1857 + long flags = 0;
1.1858 + if (thr_create(NULL, stack_size, (void *(*)(void *))continuation, args, flags, &tid) == 0) {
1.1859 + void * tmp;
1.1860 + thr_join(tid, NULL, &tmp);
1.1861 + rslt = (int)tmp;
1.1862 + } else {
1.1863 + /* See above. Continue in current thread if thr_create() failed */
1.1864 + rslt = continuation(args);
1.1865 + }
1.1866 +#endif
1.1867 + return rslt;
1.1868 +}
1.1869 +
1.1870 +/* Coarse estimation of number of digits assuming the worst case is a 64-bit pid. */
1.1871 +#define MAX_PID_STR_SZ 20
1.1872 +
1.1873 +void SetJavaLauncherPlatformProps() {
1.1874 + /* Linux only */
1.1875 +#ifdef __linux__
1.1876 + const char *substr = "-Dsun.java.launcher.pid=";
1.1877 + char *pid_prop_str = (char *)JLI_MemAlloc(strlen(substr) + MAX_PID_STR_SZ + 1);
1.1878 + sprintf(pid_prop_str, "%s%d", substr, getpid());
1.1879 + AddOption(pid_prop_str, NULL);
1.1880 +#endif
1.1881 +}
