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818 lines
24 KiB
C
818 lines
24 KiB
C
/*
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* Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "java.h"
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#include "jvm_md.h"
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#include <dirent.h>
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#include <dlfcn.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include "manifest_info.h"
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#define JVM_DLL "libjvm.so"
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#define JAVA_DLL "libjava.so"
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#ifdef AIX
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#define LD_LIBRARY_PATH "LIBPATH"
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#else
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#define LD_LIBRARY_PATH "LD_LIBRARY_PATH"
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#endif
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/* help jettison the LD_LIBRARY_PATH settings in the future */
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#ifndef SETENV_REQUIRED
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#define SETENV_REQUIRED
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#endif
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#ifdef __solaris__
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# include <sys/systeminfo.h>
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# include <sys/elf.h>
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# include <stdio.h>
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#endif
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/*
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* Flowchart of launcher execs and options processing on unix
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*
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* The selection of the proper vm shared library to open depends on
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* several classes of command line options, including vm "flavor"
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* options (-client, -server).
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* The vm selection options are not passed to the running
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* virtual machine; they must be screened out by the launcher.
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*
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* The version specification (if any) is processed first by the
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* platform independent routine SelectVersion. This may result in
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* the exec of the specified launcher version.
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*
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* Previously the launcher modified the LD_LIBRARY_PATH appropriately for the
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* desired data model path, regardless if data models matched or not. The
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* launcher subsequently exec'ed the desired executable, in order to make the
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* LD_LIBRARY_PATH path available, for the runtime linker.
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*
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* Now, in most cases,the launcher will dlopen the target libjvm.so. All
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* required libraries are loaded by the runtime linker, using the
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* $RPATH/$ORIGIN baked into the shared libraries at compile time. Therefore,
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* in most cases, the launcher will only exec, if the data models are
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* mismatched, and will not set any environment variables, regardless of the
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* data models.
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*
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* However, if the environment contains a LD_LIBRARY_PATH, this will cause the
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* launcher to inspect the LD_LIBRARY_PATH. The launcher will check
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* a. if the LD_LIBRARY_PATH's first component is the path to the desired
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* libjvm.so
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* b. if any other libjvm.so is found in any of the paths.
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* If case b is true, then the launcher will set the LD_LIBRARY_PATH to the
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* desired JRE and reexec, in order to propagate the environment.
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*
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* Main
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* (incoming argv)
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* |
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* \|/
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* CreateExecutionEnvironment
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* (determines desired data model)
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* |
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* |
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* \|/
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* Have Desired Model ? --> NO --> Exit(with error)
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* |
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* |
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* \|/
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* YES
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* |
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* |
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* \|/
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* CheckJvmType
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* (removes -client, -server, etc.)
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* |
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* |
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* \|/
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* TranslateDashJArgs...
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* (Prepare to pass args to vm)
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* |
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* |
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* \|/
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* ParseArguments
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* |
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* |
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* \|/
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* RequiresSetenv
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* Is LD_LIBRARY_PATH
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* and friends set ? --> NO --> Continue
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* YES
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* |
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* |
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* \|/
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* Path is desired JRE ? YES --> Continue
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* NO
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* |
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* |
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* \|/
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* Paths have well known
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* jvm paths ? --> NO --> Error/Exit
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* YES
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* |
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* |
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* \|/
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* Does libjvm.so exist
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* in any of them ? --> NO --> Continue
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* YES
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* |
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* |
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* \|/
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* Set the LD_LIBRARY_PATH
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* |
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* |
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* \|/
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* Re-exec
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* |
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* |
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* \|/
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* Main
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*/
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/* Store the name of the executable once computed */
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static char *execname = NULL;
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/*
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* execname accessor from other parts of platform dependent logic
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*/
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const char *
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GetExecName() {
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return execname;
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}
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#ifdef SETENV_REQUIRED
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static jboolean
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JvmExists(const char *path) {
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char tmp[PATH_MAX + 1];
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struct stat statbuf;
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JLI_Snprintf(tmp, PATH_MAX, "%s/%s", path, JVM_DLL);
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if (stat(tmp, &statbuf) == 0) {
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return JNI_TRUE;
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}
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return JNI_FALSE;
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}
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/*
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* contains a lib/{server,client}/libjvm.so ?
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*/
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static jboolean
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ContainsLibJVM(const char *env) {
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/* the usual suspects */
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char clientPattern[] = "lib/client";
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char serverPattern[] = "lib/server";
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char *envpath;
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char *path;
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jboolean clientPatternFound;
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jboolean serverPatternFound;
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/* fastest path */
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if (env == NULL) {
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return JNI_FALSE;
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}
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/* to optimize for time, test if any of our usual suspects are present. */
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clientPatternFound = JLI_StrStr(env, clientPattern) != NULL;
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serverPatternFound = JLI_StrStr(env, serverPattern) != NULL;
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if (clientPatternFound == JNI_FALSE && serverPatternFound == JNI_FALSE) {
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return JNI_FALSE;
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}
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/*
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* we have a suspicious path component, check if it contains a libjvm.so
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*/
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envpath = JLI_StringDup(env);
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for (path = JLI_StrTok(envpath, ":"); path != NULL; path = JLI_StrTok(NULL, ":")) {
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if (clientPatternFound && JLI_StrStr(path, clientPattern) != NULL) {
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if (JvmExists(path)) {
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JLI_MemFree(envpath);
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return JNI_TRUE;
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}
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}
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if (serverPatternFound && JLI_StrStr(path, serverPattern) != NULL) {
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if (JvmExists(path)) {
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JLI_MemFree(envpath);
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return JNI_TRUE;
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}
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}
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}
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JLI_MemFree(envpath);
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return JNI_FALSE;
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}
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/*
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* Test whether the environment variable needs to be set, see flowchart.
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*/
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static jboolean
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RequiresSetenv(const char *jvmpath) {
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char jpath[PATH_MAX + 1];
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char *llp;
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char *dmllp = NULL;
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char *p; /* a utility pointer */
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#ifdef AIX
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/* We always have to set the LIBPATH on AIX because ld doesn't support $ORIGIN. */
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return JNI_TRUE;
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#endif
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llp = getenv("LD_LIBRARY_PATH");
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#ifdef __solaris__
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dmllp = getenv("LD_LIBRARY_PATH_64");
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#endif /* __solaris__ */
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/* no environment variable is a good environment variable */
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if (llp == NULL && dmllp == NULL) {
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return JNI_FALSE;
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}
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#ifdef __linux
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/*
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* On linux, if a binary is running as sgid or suid, glibc sets
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* LD_LIBRARY_PATH to the empty string for security purposes. (In contrast,
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* on Solaris the LD_LIBRARY_PATH variable for a privileged binary does not
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* lose its settings; but the dynamic linker does apply more scrutiny to the
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* path.) The launcher uses the value of LD_LIBRARY_PATH to prevent an exec
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* loop, here and further downstream. Therefore, if we are running sgid or
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* suid, this function's setting of LD_LIBRARY_PATH will be ineffective and
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* we should case a return from the calling function. Getting the right
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* libraries will be handled by the RPATH. In reality, this check is
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* redundant, as the previous check for a non-null LD_LIBRARY_PATH will
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* return back to the calling function forthwith, it is left here to safe
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* guard against any changes, in the glibc's existing security policy.
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*/
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if ((getgid() != getegid()) || (getuid() != geteuid())) {
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return JNI_FALSE;
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}
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#endif /* __linux */
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/*
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* Prevent recursions. Since LD_LIBRARY_PATH is the one which will be set by
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* previous versions of the JRE, thus it is the only path that matters here.
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* So we check to see if the desired JRE is set.
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*/
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JLI_StrNCpy(jpath, jvmpath, PATH_MAX);
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p = JLI_StrRChr(jpath, '/');
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*p = '\0';
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if (llp != NULL && JLI_StrNCmp(llp, jpath, JLI_StrLen(jpath)) == 0) {
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return JNI_FALSE;
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}
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/* scrutinize all the paths further */
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if (llp != NULL && ContainsLibJVM(llp)) {
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return JNI_TRUE;
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}
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if (dmllp != NULL && ContainsLibJVM(dmllp)) {
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return JNI_TRUE;
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}
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return JNI_FALSE;
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}
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#endif /* SETENV_REQUIRED */
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void
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CreateExecutionEnvironment(int *pargc, char ***pargv,
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char jrepath[], jint so_jrepath,
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char jvmpath[], jint so_jvmpath,
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char jvmcfg[], jint so_jvmcfg) {
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char * jvmtype = NULL;
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int argc = *pargc;
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char **argv = *pargv;
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#ifdef SETENV_REQUIRED
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jboolean mustsetenv = JNI_FALSE;
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char *runpath = NULL; /* existing effective LD_LIBRARY_PATH setting */
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char* new_runpath = NULL; /* desired new LD_LIBRARY_PATH string */
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char* newpath = NULL; /* path on new LD_LIBRARY_PATH */
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char* lastslash = NULL;
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char** newenvp = NULL; /* current environment */
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size_t new_runpath_size;
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#endif /* SETENV_REQUIRED */
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/* Compute/set the name of the executable */
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SetExecname(*pargv);
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/* Check to see if the jvmpath exists */
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/* Find out where the JRE is that we will be using. */
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if (!GetJREPath(jrepath, so_jrepath, JNI_FALSE)) {
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JLI_ReportErrorMessage(JRE_ERROR1);
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exit(2);
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}
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JLI_Snprintf(jvmcfg, so_jvmcfg, "%s%slib%sjvm.cfg",
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jrepath, FILESEP, FILESEP);
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/* Find the specified JVM type */
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if (ReadKnownVMs(jvmcfg, JNI_FALSE) < 1) {
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JLI_ReportErrorMessage(CFG_ERROR7);
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exit(1);
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}
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jvmpath[0] = '\0';
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jvmtype = CheckJvmType(pargc, pargv, JNI_FALSE);
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if (JLI_StrCmp(jvmtype, "ERROR") == 0) {
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JLI_ReportErrorMessage(CFG_ERROR9);
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exit(4);
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}
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if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath)) {
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JLI_ReportErrorMessage(CFG_ERROR8, jvmtype, jvmpath);
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exit(4);
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}
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/*
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* we seem to have everything we need, so without further ado
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* we return back, otherwise proceed to set the environment.
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*/
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#ifdef SETENV_REQUIRED
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mustsetenv = RequiresSetenv(jvmpath);
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JLI_TraceLauncher("mustsetenv: %s\n", mustsetenv ? "TRUE" : "FALSE");
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if (mustsetenv == JNI_FALSE) {
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return;
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}
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#else
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return;
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#endif /* SETENV_REQUIRED */
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#ifdef SETENV_REQUIRED
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if (mustsetenv) {
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/*
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* We will set the LD_LIBRARY_PATH as follows:
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*
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* o $JVMPATH (directory portion only)
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* o $JRE/lib
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* o $JRE/../lib
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*
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* followed by the user's previous effective LD_LIBRARY_PATH, if
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* any.
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*/
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runpath = getenv(LD_LIBRARY_PATH);
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/* runpath contains current effective LD_LIBRARY_PATH setting */
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{ /* New scope to declare local variable */
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char *new_jvmpath = JLI_StringDup(jvmpath);
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new_runpath_size = ((runpath != NULL) ? JLI_StrLen(runpath) : 0) +
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2 * JLI_StrLen(jrepath) +
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#ifdef AIX
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/* On AIX we additionally need 'jli' in the path because ld doesn't support $ORIGIN. */
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JLI_StrLen(jrepath) + JLI_StrLen("/lib//jli:") +
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#endif
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JLI_StrLen(new_jvmpath) + 52;
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new_runpath = JLI_MemAlloc(new_runpath_size);
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newpath = new_runpath + JLI_StrLen(LD_LIBRARY_PATH "=");
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/*
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* Create desired LD_LIBRARY_PATH value for target data model.
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*/
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{
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/* remove the name of the .so from the JVM path */
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lastslash = JLI_StrRChr(new_jvmpath, '/');
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if (lastslash)
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*lastslash = '\0';
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sprintf(new_runpath, LD_LIBRARY_PATH "="
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"%s:"
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"%s/lib:"
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#ifdef AIX
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"%s/lib/jli:" /* Needed on AIX because ld doesn't support $ORIGIN. */
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#endif
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"%s/../lib",
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new_jvmpath,
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jrepath,
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#ifdef AIX
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jrepath,
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#endif
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jrepath
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);
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JLI_MemFree(new_jvmpath);
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/*
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* Check to make sure that the prefix of the current path is the
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* desired environment variable setting, though the RequiresSetenv
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* checks if the desired runpath exists, this logic does a more
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* comprehensive check.
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*/
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if (runpath != NULL &&
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JLI_StrNCmp(newpath, runpath, JLI_StrLen(newpath)) == 0 &&
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(runpath[JLI_StrLen(newpath)] == 0 ||
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runpath[JLI_StrLen(newpath)] == ':')) {
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JLI_MemFree(new_runpath);
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return;
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}
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}
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}
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/*
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* Place the desired environment setting onto the prefix of
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* LD_LIBRARY_PATH. Note that this prevents any possible infinite
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* loop of execv() because we test for the prefix, above.
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*/
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if (runpath != 0) {
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/* ensure storage for runpath + colon + NULL */
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if ((JLI_StrLen(runpath) + 1 + 1) > new_runpath_size) {
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JLI_ReportErrorMessageSys(JRE_ERROR11);
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exit(1);
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}
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JLI_StrCat(new_runpath, ":");
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JLI_StrCat(new_runpath, runpath);
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}
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if (putenv(new_runpath) != 0) {
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/* problem allocating memory; LD_LIBRARY_PATH not set properly */
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exit(1);
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}
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/*
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* Unix systems document that they look at LD_LIBRARY_PATH only
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* once at startup, so we have to re-exec the current executable
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* to get the changed environment variable to have an effect.
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*/
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newenvp = environ;
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}
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#endif /* SETENV_REQUIRED */
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{
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char *newexec = execname;
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JLI_TraceLauncher("TRACER_MARKER:About to EXEC\n");
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(void) fflush(stdout);
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(void) fflush(stderr);
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#ifdef SETENV_REQUIRED
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if (mustsetenv) {
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execve(newexec, argv, newenvp);
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} else {
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execv(newexec, argv);
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}
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#else /* !SETENV_REQUIRED */
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execv(newexec, argv);
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#endif /* SETENV_REQUIRED */
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JLI_ReportErrorMessageSys(JRE_ERROR4, newexec);
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}
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exit(1);
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}
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static jboolean
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GetJVMPath(const char *jrepath, const char *jvmtype,
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char *jvmpath, jint jvmpathsize)
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{
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struct stat s;
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if (JLI_StrChr(jvmtype, '/')) {
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JLI_Snprintf(jvmpath, jvmpathsize, "%s/" JVM_DLL, jvmtype);
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} else {
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JLI_Snprintf(jvmpath, jvmpathsize, "%s/lib/%s/" JVM_DLL, jrepath, jvmtype);
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}
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JLI_TraceLauncher("Does `%s' exist ... ", jvmpath);
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if (stat(jvmpath, &s) == 0) {
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JLI_TraceLauncher("yes.\n");
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return JNI_TRUE;
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} else {
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JLI_TraceLauncher("no.\n");
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return JNI_FALSE;
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}
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}
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/*
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* Find path to JRE based on .exe's location or registry settings.
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*/
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static jboolean
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GetJREPath(char *path, jint pathsize, jboolean speculative)
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{
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char libjava[MAXPATHLEN];
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struct stat s;
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if (GetApplicationHome(path, pathsize)) {
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/* Is JRE co-located with the application? */
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JLI_Snprintf(libjava, sizeof(libjava), "%s/lib/" JAVA_DLL, path);
|
|
if (access(libjava, F_OK) == 0) {
|
|
JLI_TraceLauncher("JRE path is %s\n", path);
|
|
return JNI_TRUE;
|
|
}
|
|
/* ensure storage for path + /jre + NULL */
|
|
if ((JLI_StrLen(path) + 4 + 1) > (size_t) pathsize) {
|
|
JLI_TraceLauncher("Insufficient space to store JRE path\n");
|
|
return JNI_FALSE;
|
|
}
|
|
/* Does the app ship a private JRE in <apphome>/jre directory? */
|
|
JLI_Snprintf(libjava, sizeof(libjava), "%s/jre/lib/" JAVA_DLL, path);
|
|
if (access(libjava, F_OK) == 0) {
|
|
JLI_StrCat(path, "/jre");
|
|
JLI_TraceLauncher("JRE path is %s\n", path);
|
|
return JNI_TRUE;
|
|
}
|
|
}
|
|
|
|
if (GetApplicationHomeFromDll(path, pathsize)) {
|
|
JLI_Snprintf(libjava, sizeof(libjava), "%s/lib/" JAVA_DLL, path);
|
|
if (stat(libjava, &s) == 0) {
|
|
JLI_TraceLauncher("JRE path is %s\n", path);
|
|
return JNI_TRUE;
|
|
}
|
|
}
|
|
|
|
if (!speculative)
|
|
JLI_ReportErrorMessage(JRE_ERROR8 JAVA_DLL);
|
|
return JNI_FALSE;
|
|
}
|
|
|
|
jboolean
|
|
LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
|
|
{
|
|
void *libjvm;
|
|
|
|
JLI_TraceLauncher("JVM path is %s\n", jvmpath);
|
|
|
|
libjvm = dlopen(jvmpath, RTLD_NOW + RTLD_GLOBAL);
|
|
if (libjvm == NULL) {
|
|
#if defined(__solaris__) && defined(__sparc) && !defined(_LP64) /* i.e. 32-bit sparc */
|
|
FILE * fp;
|
|
Elf32_Ehdr elf_head;
|
|
int count;
|
|
int location;
|
|
|
|
fp = fopen(jvmpath, "r");
|
|
if (fp == NULL) {
|
|
JLI_ReportErrorMessage(DLL_ERROR2, jvmpath, dlerror());
|
|
return JNI_FALSE;
|
|
}
|
|
|
|
/* read in elf header */
|
|
count = fread((void*)(&elf_head), sizeof(Elf32_Ehdr), 1, fp);
|
|
fclose(fp);
|
|
if (count < 1) {
|
|
JLI_ReportErrorMessage(DLL_ERROR2, jvmpath, dlerror());
|
|
return JNI_FALSE;
|
|
}
|
|
|
|
/*
|
|
* Check for running a server vm (compiled with -xarch=v8plus)
|
|
* on a stock v8 processor. In this case, the machine type in
|
|
* the elf header would not be included the architecture list
|
|
* provided by the isalist command, which is turn is gotten from
|
|
* sysinfo. This case cannot occur on 64-bit hardware and thus
|
|
* does not have to be checked for in binaries with an LP64 data
|
|
* model.
|
|
*/
|
|
if (elf_head.e_machine == EM_SPARC32PLUS) {
|
|
char buf[257]; /* recommended buffer size from sysinfo man
|
|
page */
|
|
long length;
|
|
char* location;
|
|
|
|
length = sysinfo(SI_ISALIST, buf, 257);
|
|
if (length > 0) {
|
|
location = JLI_StrStr(buf, "sparcv8plus ");
|
|
if (location == NULL) {
|
|
JLI_ReportErrorMessage(JVM_ERROR3);
|
|
return JNI_FALSE;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
JLI_ReportErrorMessage(DLL_ERROR1, __LINE__);
|
|
JLI_ReportErrorMessage(DLL_ERROR2, jvmpath, dlerror());
|
|
return JNI_FALSE;
|
|
}
|
|
|
|
ifn->CreateJavaVM = (CreateJavaVM_t)
|
|
dlsym(libjvm, "JNI_CreateJavaVM");
|
|
if (ifn->CreateJavaVM == NULL) {
|
|
JLI_ReportErrorMessage(DLL_ERROR2, jvmpath, dlerror());
|
|
return JNI_FALSE;
|
|
}
|
|
|
|
ifn->GetDefaultJavaVMInitArgs = (GetDefaultJavaVMInitArgs_t)
|
|
dlsym(libjvm, "JNI_GetDefaultJavaVMInitArgs");
|
|
if (ifn->GetDefaultJavaVMInitArgs == NULL) {
|
|
JLI_ReportErrorMessage(DLL_ERROR2, jvmpath, dlerror());
|
|
return JNI_FALSE;
|
|
}
|
|
|
|
ifn->GetCreatedJavaVMs = (GetCreatedJavaVMs_t)
|
|
dlsym(libjvm, "JNI_GetCreatedJavaVMs");
|
|
if (ifn->GetCreatedJavaVMs == NULL) {
|
|
JLI_ReportErrorMessage(DLL_ERROR2, jvmpath, dlerror());
|
|
return JNI_FALSE;
|
|
}
|
|
|
|
return JNI_TRUE;
|
|
}
|
|
|
|
/*
|
|
* Compute the name of the executable
|
|
*
|
|
* In order to re-exec securely we need the absolute path of the
|
|
* executable. On Solaris getexecname(3c) may not return an absolute
|
|
* path so we use dladdr to get the filename of the executable and
|
|
* then use realpath to derive an absolute path. From Solaris 9
|
|
* onwards the filename returned in DL_info structure from dladdr is
|
|
* an absolute pathname so technically realpath isn't required.
|
|
* On Linux we read the executable name from /proc/self/exe.
|
|
* As a fallback, and for platforms other than Solaris and Linux,
|
|
* we use FindExecName to compute the executable name.
|
|
*/
|
|
const char*
|
|
SetExecname(char **argv)
|
|
{
|
|
char* exec_path = NULL;
|
|
#if defined(__solaris__)
|
|
{
|
|
Dl_info dlinfo;
|
|
int (*fptr)();
|
|
|
|
fptr = (int (*)())dlsym(RTLD_DEFAULT, "main");
|
|
if (fptr == NULL) {
|
|
JLI_ReportErrorMessage(DLL_ERROR3, dlerror());
|
|
return JNI_FALSE;
|
|
}
|
|
|
|
if (dladdr((void*)fptr, &dlinfo)) {
|
|
char *resolved = (char*)JLI_MemAlloc(PATH_MAX+1);
|
|
if (resolved != NULL) {
|
|
exec_path = realpath(dlinfo.dli_fname, resolved);
|
|
if (exec_path == NULL) {
|
|
JLI_MemFree(resolved);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#elif defined(__linux__)
|
|
{
|
|
const char* self = "/proc/self/exe";
|
|
char buf[PATH_MAX+1];
|
|
int len = readlink(self, buf, PATH_MAX);
|
|
if (len >= 0) {
|
|
buf[len] = '\0'; /* readlink(2) doesn't NUL terminate */
|
|
exec_path = JLI_StringDup(buf);
|
|
}
|
|
}
|
|
#else /* !__solaris__ && !__linux__ */
|
|
{
|
|
/* Not implemented */
|
|
}
|
|
#endif
|
|
|
|
if (exec_path == NULL) {
|
|
exec_path = FindExecName(argv[0]);
|
|
}
|
|
execname = exec_path;
|
|
return exec_path;
|
|
}
|
|
|
|
/* --- Splash Screen shared library support --- */
|
|
static const char* SPLASHSCREEN_SO = JNI_LIB_NAME("splashscreen");
|
|
static void* hSplashLib = NULL;
|
|
|
|
void* SplashProcAddress(const char* name) {
|
|
if (!hSplashLib) {
|
|
int ret;
|
|
char jrePath[MAXPATHLEN];
|
|
char splashPath[MAXPATHLEN];
|
|
|
|
if (!GetJREPath(jrePath, sizeof(jrePath), JNI_FALSE)) {
|
|
JLI_ReportErrorMessage(JRE_ERROR1);
|
|
return NULL;
|
|
}
|
|
ret = JLI_Snprintf(splashPath, sizeof(splashPath), "%s/lib/%s",
|
|
jrePath, SPLASHSCREEN_SO);
|
|
|
|
if (ret >= (int) sizeof(splashPath)) {
|
|
JLI_ReportErrorMessage(JRE_ERROR11);
|
|
return NULL;
|
|
}
|
|
if (ret < 0) {
|
|
JLI_ReportErrorMessage(JRE_ERROR13);
|
|
return NULL;
|
|
}
|
|
hSplashLib = dlopen(splashPath, RTLD_LAZY | RTLD_GLOBAL);
|
|
JLI_TraceLauncher("Info: loaded %s\n", splashPath);
|
|
}
|
|
if (hSplashLib) {
|
|
void* sym = dlsym(hSplashLib, name);
|
|
return sym;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
void SplashFreeLibrary() {
|
|
if (hSplashLib) {
|
|
dlclose(hSplashLib);
|
|
hSplashLib = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Block current thread and continue execution in a new thread
|
|
*/
|
|
int
|
|
ContinueInNewThread0(int (JNICALL *continuation)(void *), jlong stack_size, void * args) {
|
|
int rslt;
|
|
#ifndef __solaris__
|
|
pthread_t tid;
|
|
pthread_attr_t attr;
|
|
pthread_attr_init(&attr);
|
|
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
|
|
|
|
if (stack_size > 0) {
|
|
pthread_attr_setstacksize(&attr, stack_size);
|
|
}
|
|
pthread_attr_setguardsize(&attr, 0); // no pthread guard page on java threads
|
|
|
|
if (pthread_create(&tid, &attr, (void *(*)(void*))continuation, (void*)args) == 0) {
|
|
void * tmp;
|
|
pthread_join(tid, &tmp);
|
|
rslt = (int)(intptr_t)tmp;
|
|
} else {
|
|
/*
|
|
* Continue execution in current thread if for some reason (e.g. out of
|
|
* memory/LWP) a new thread can't be created. This will likely fail
|
|
* later in continuation as JNI_CreateJavaVM needs to create quite a
|
|
* few new threads, anyway, just give it a try..
|
|
*/
|
|
rslt = continuation(args);
|
|
}
|
|
|
|
pthread_attr_destroy(&attr);
|
|
#else /* __solaris__ */
|
|
thread_t tid;
|
|
long flags = 0;
|
|
if (thr_create(NULL, stack_size, (void *(*)(void *))continuation, args, flags, &tid) == 0) {
|
|
void * tmp;
|
|
thr_join(tid, NULL, &tmp);
|
|
rslt = (int)(intptr_t)tmp;
|
|
} else {
|
|
/* See above. Continue in current thread if thr_create() failed */
|
|
rslt = continuation(args);
|
|
}
|
|
#endif /* !__solaris__ */
|
|
return rslt;
|
|
}
|
|
|
|
/* Coarse estimation of number of digits assuming the worst case is a 64-bit pid. */
|
|
#define MAX_PID_STR_SZ 20
|
|
|
|
void SetJavaLauncherPlatformProps() {
|
|
/* Linux only */
|
|
#ifdef __linux__
|
|
const char *substr = "-Dsun.java.launcher.pid=";
|
|
char *pid_prop_str = (char *)JLI_MemAlloc(JLI_StrLen(substr) + MAX_PID_STR_SZ + 1);
|
|
sprintf(pid_prop_str, "%s%d", substr, getpid());
|
|
AddOption(pid_prop_str, NULL);
|
|
#endif /* __linux__ */
|
|
}
|
|
|
|
int
|
|
JVMInit(InvocationFunctions* ifn, jlong threadStackSize,
|
|
int argc, char **argv,
|
|
int mode, char *what, int ret)
|
|
{
|
|
ShowSplashScreen();
|
|
return ContinueInNewThread(ifn, threadStackSize, argc, argv, mode, what, ret);
|
|
}
|
|
|
|
void
|
|
PostJVMInit(JNIEnv *env, jclass mainClass, JavaVM *vm)
|
|
{
|
|
// stubbed out for windows and *nixes.
|
|
}
|
|
|
|
void
|
|
RegisterThread()
|
|
{
|
|
// stubbed out for windows and *nixes.
|
|
}
|
|
|
|
/*
|
|
* on unix, we return a false to indicate this option is not applicable
|
|
*/
|
|
jboolean
|
|
ProcessPlatformOption(const char *arg)
|
|
{
|
|
return JNI_FALSE;
|
|
}
|