--- a/jdk/src/java.base/macosx/native/launcher/jexec.c Wed Feb 15 14:51:16 2017 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,239 +0,0 @@
-/*
- * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * jexec for J2SE
- *
- * jexec is used by the system to allow execution of JAR files.
- * Essentially jexec needs to run java and
- * needs to be a native ISA executable (not a shell script), although
- * this native ISA executable requirement was a mistake that will be fixed.
- * (<ISA> is sparc or i386 or amd64).
- *
- * When you execute a jar file, jexec is executed by the system as follows:
- * /usr/java/jre/lib/<ISA>/jexec -jar JARFILENAME
- * so this just needs to be turned into:
- * /usr/java/jre/bin/java -jar JARFILENAME
- *
- * Solaris systems (new 7's and all 8's) will be looking for jexec at:
- * /usr/java/jre/lib/<ISA>/jexec
- * Older systems may need to add this to their /etc/system file:
- * set javaexec:jexec="/usr/java/jre/lib/<ISA>/jexec"
- * and reboot the machine for this to work.
- *
- * This source should be compiled as:
- * cc -o jexec jexec.c
- *
- * And jexec should be placed at the following location of the installation:
- * <INSTALLATIONDIR>/jre/lib/<ISA>/jexec (for Solaris)
- * <INSTALLATIONDIR>/lib/jexec (for Linux)
- *
- * NOTE: Unless <INSTALLATIONDIR> is the "default" JDK on the system
- * (i.e. /usr/java -> <INSTALLATIONDIR>), this jexec will not be
- * found. The 1.2 java is only the default on Solaris 8 and
- * on systems where the 1.2 packages were installed and no 1.1
- * java was found.
- *
- * NOTE: You must use 1.2 jar to build your jar files. The system
- * doesn't seem to pick up 1.1 jar files.
- *
- * NOTE: We don't need to set LD_LIBRARY_PATH here, even though we
- * are running the actual java binary because the java binary will
- * look for it's libraries through it's own runpath, which uses
- * $ORIGIN.
- *
- * NOTE: This jexec should NOT have any special .so library needs because
- * it appears that this executable will NOT get the $ORIGIN of jexec
- * but the $ORIGIN of the jar file being executed. Be careful to keep
- * this program simple and with no .so dependencies.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <limits.h>
-#include <errno.h>
-
-static const int CRAZY_EXEC = ENOEXEC;
-static const int BAD_MAGIC = ENOEXEC;
-
-static const char * BAD_EXEC_MSG = "jexec failed";
-static const char * CRAZY_EXEC_MSG = "missing args";
-static const char * MISSING_JAVA_MSG = "can't locate java";
-static const char * UNKNOWN_ERROR = "unknown error";
-
-/* Define a constant that represents the number of directories to pop off the
- * current location to find the java binary */
-static const int RELATIVE_DEPTH = 3;
-
-/* path to java after popping */
-static const char * BIN_PATH = "/bin/java";
-
-/* flag used when running JAR files */
-static const char * JAR_FLAG = "-jar";
-
-int main(int argc, const char * argv[]);
-void errorExit(int error, const char * message);
-int getJavaPath(const char * path, char * buf, int depth);
-
-/*
- * This is the main entry point. This program (jexec) will attempt to execute
- * a JAR file by finding the Java program (java), relative to its own location.
- * The exact location of the Java program depends on the platform, i.e.
- *
- * <INSTALLATIONDIR>/jre/lib/<ISA>/jexec (for Solaris)
- * <INSTALLATIONDIR>/lib/jexec (for Linux JDK)
- *
- * Once the Java program is found, this program copies any remaining arguments
- * into another array, which is then used to exec the Java program.
- *
- * On Linux this program does some additional steps. When copying the array of
- * args, it is necessary to insert the "-jar" flag between arg[0], the program
- * name, and the original arg[1], which is presumed to be a path to a JAR file.
- * It is also necessary to verify that the original arg[1] really is a JAR file.
- * (These steps are unnecessary on Solaris because they are taken care of by
- * the kernel.)
- */
-int main(int argc, const char * argv[]) {
- /* We need to exec the original arguments using java, instead of jexec.
- * Also, for Linux, it is necessary to add the "-jar" argument between
- * the new arg[0], and the old arg[1]. To do this we will create a new
- * args array. */
- char java[PATH_MAX + 1]; /* path to java binary */
- const char ** nargv = NULL; /* new args array */
- int nargc = 0; /* new args array count */
- int argi = 0; /* index into old array */
-
- /* Make sure we have something to work with */
- if ((argc < 1) || (argv == NULL)) {
- /* Shouldn't happen... */
- errorExit(CRAZY_EXEC, CRAZY_EXEC_MSG);
- }
-
- /* Get the path to the java binary, which is in a known position relative
- * to our current position, which is in argv[0]. */
- if (getJavaPath(argv[argi++], java, RELATIVE_DEPTH) != 0) {
- errorExit(errno, MISSING_JAVA_MSG);
- }
-
- nargv = (const char **) malloc((argc + 2) * (sizeof (const char *)));
- nargv[nargc++] = java;
-
- if (argc >= 2) {
- const char * jarfile = argv[argi++];
- const char * message = NULL;
-
- /* the next argument is the path to the JAR file */
- nargv[nargc++] = jarfile;
- }
-
- /* finally copy any remaining arguments */
- while (argi < argc) {
- nargv[nargc++] = argv[argi++];
- }
-
- /* finally add one last terminating null */
- nargv[nargc++] = NULL;
-
- /* It's time to exec the java binary with the new arguments. It
- * is possible that we've reached this point without actually
- * having a JAR file argument (i.e. if argc < 2), but we still
- * want to exec the java binary, since that will take care of
- * displaying the correct usage. */
- execv(java, (char * const *) nargv);
-
- /* If the exec worked, this process would have been replaced
- * by the new process. So any code reached beyond this point
- * implies an error in the exec. */
- free(nargv);
- errorExit(errno, BAD_EXEC_MSG);
- return 0; // keep the compiler happy
-}
-
-
-/*
- * Exit the application by setting errno, and writing a message.
- *
- * Parameters:
- * error - errno is set to this value, and it is used to exit.
- * message - the message to write.
- */
-void errorExit(int error, const char * message) {
- if (error != 0) {
- errno = error;
- perror((message != NULL) ? message : UNKNOWN_ERROR);
- }
-
- exit((error == 0) ? 0 : 1);
-}
-
-
-/*
- * Get the path to the java binary that should be relative to the current path.
- *
- * Parameters:
- * path - the input path that the java binary that should be relative to.
- * buf - a buffer of size PATH_MAX or greater that the java path is
- * copied to.
- * depth - the number of names to trim off the current path, including the
- * name of this program.
- *
- * Returns:
- * This function returns 0 on success; otherwise it returns the value of
- * errno.
- */
-int getJavaPath(const char * path, char * buf, int depth) {
- int result = 0;
-
- /* Get the full path to this program. Depending on whether this is Solaris
- * or Linux, this will be something like,
- *
- * <FOO>/jre/lib/<ISA>/jexec (for Solaris)
- * <FOO>/lib/jexec (for Linux)
- */
- if (realpath(path, buf) != NULL) {
- int count = 0;
-
- /* Pop off the filename, and then subdirectories for each level of
- * depth */
- for (count = 0; count < depth; count++) {
- *(strrchr(buf, '/')) = '\0';
- }
-
- /* Append the relative location of java, creating something like,
- *
- * <FOO>/jre/bin/java (for Solaris)
- * <FOO>/bin/java (for Linux)
- */
- strcat(buf, BIN_PATH);
- }
- else {
- /* Failed to get the path */
- result = errno;
- }
-
- return (result);
-}