Initial import of OpenJdk files.
Create new libcore/ojluni directory with src/main/java and
src/main/native subdirectiories.
Build ojluni into core-oj jar.
Use openjdk classes from java.awt.font package.
Copy all files from jdk/src/share/classes and jdk/src/solaris/classes
directories in openjdk into libcore/ojluni/src/main/java.
Copy following native files from openjdk to
libcore/ojluni/src/main/native:
jdk/src/solaris/native/java/io/canonicalize_md.c
build/linux-amd64/include/classfile_constants.h
jdk/src/share/native/java/net/DatagramPacket.c
jdk/src/solaris/native/sun/net/spi/DefaultProxySelector.c
jdk/src/share/native/java/lang/Double.c
jdk/src/share/native/java/lang/fdlibm/include/fdlibm.h
jdk/src/solaris/native/sun/nio/ch/FileChannelImpl.c
jdk/src/solaris/native/java/io/FileDescriptor_md.c
jdk/src/solaris/native/sun/nio/ch/FileDispatcherImpl.c
jdk/src/share/native/java/io/FileInputStream.c
jdk/src/solaris/native/sun/nio/ch/FileKey.c
jdk/src/solaris/native/java/io/FileOutputStream_md.c
jdk/src/solaris/native/java/io/FileSystem_md.c
jdk/src/share/native/java/lang/Float.c
jdk/src/share/native/java/net/Inet4Address.c
jdk/src/solaris/native/java/net/Inet4AddressImpl.c
jdk/src/share/native/java/net/Inet6Address.c
jdk/src/solaris/native/java/net/Inet6AddressImpl.c
jdk/src/share/native/java/net/InetAddress.c
jdk/src/solaris/native/java/net/InetAddressImplFactory.c
jdk/src/share/native/java/io/io_util.c
jdk/src/solaris/native/sun/nio/ch/IOUtil.c
jdk/src/share/native/java/io/io_util.h
jdk/src/solaris/native/java/io/io_util_md.c
jdk/src/solaris/native/java/io/io_util_md.h
build/linux-amd64/tmp/java/java.nio/nio/CClassHeaders/java_io_FileDescriptor.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_io_FileInputStream.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_io_FileOutputStream.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_io_FileSystem.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_io_ObjectStreamClass.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_io_UnixFileSystem.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_Double.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_Float.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_Integer.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_Long.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_Runtime.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_Shutdown.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_StrictMath.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_String.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_System.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_Thread.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/java_lang_Throwable.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_DatagramPacket.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_Inet4Address.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_Inet4AddressImpl.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_Inet6Address.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_Inet6AddressImpl.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_InetAddress.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_InetAddressImplFactory.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_NetworkInterface.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_PlainDatagramSocketImpl.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_PlainSocketImpl.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_SocketInputStream.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_SocketOptions.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/java_net_SocketOutputStream.h
jdk/src/share/native/java/lang/java_props.h
jdk/src/solaris/native/java/lang/java_props_md.c
jdk/src/share/native/java/util/zip/Adler32.c as java_util_zip_Adler32.c
jdk/src/share/native/java/util/zip/CRC32.c as java_util_zip_CRC32.c
build/linux-amd64/tmp/sun/java.util.zip/zip/CClassHeaders/java_util_zip_CRC32.h
jdk/src/share/native/java/util/zip/Deflater.c as java_util_zip_Deflater.c
build/linux-amd64/tmp/sun/java.util.zip/zip/CClassHeaders/java_util_zip_Deflater.h
jdk/src/share/native/java/util/zip/Inflater.c as java_util_zip_Inflater.c
build/linux-amd64/tmp/sun/java.util.zip/zip/CClassHeaders/java_util_zip_Inflater.h
jdk/src/share/native/java/util/zip/ZipFile.c as java_util_zip_ZipFile.c
build/linux-amd64/tmp/sun/java.util.zip/zip/CClassHeaders/java_util_zip_ZipFile.h
jdk/src/share/native/java/lang/fdlibm/include/jfdlibm.h
jdk/src/share/native/common/jlong.h
jdk/src/solaris/native/common/jlong_md.h
jdk/src/share/native/common/jni_util.c
jdk/src/share/native/common/jni_util.h
jdk/src/solaris/native/common/jni_util_md.c
jdk/src/share/javavm/export/jvm.h
jdk/src/solaris/javavm/export/jvm_md.h
jdk/src/solaris/native/java/net/linux_close.c
jdk/src/share/native/sun/misc/NativeSignalHandler.c
jdk/src/solaris/native/sun/nio/ch/NativeThread.c
jdk/src/share/native/java/net/net_util.c
jdk/src/share/native/java/net/net_util.h
jdk/src/solaris/native/java/net/net_util_md.c
jdk/src/solaris/native/java/net/net_util_md.h
jdk/src/solaris/native/java/net/NetworkInterface.c
jdk/src/share/native/sun/nio/ch/nio.h
jdk/src/solaris/native/sun/nio/ch/nio_util.h
jdk/src/share/native/java/io/ObjectStreamClass.c
jdk/src/solaris/native/java/net/PlainDatagramSocketImpl.c
jdk/src/solaris/native/java/net/PlainSocketImpl.c
jdk/src/solaris/native/java/lang/ProcessEnvironment_md.c
jdk/src/share/native/java/lang/Runtime.c
jdk/src/share/native/java/lang/Shutdown.c
jdk/src/share/native/sun/misc/Signal.c
jdk/src/solaris/native/java/net/SocketInputStream.c
jdk/src/solaris/native/java/net/SocketOutputStream.c
jdk/src/share/native/java/lang/StrictMath.c
jdk/src/share/native/java/lang/String.c
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/sun_misc_NativeSignalHandler.h
build/linux-amd64/tmp/java/java.lang/java/CClassHeaders/sun_misc_Signal.h
build/linux-amd64/tmp/sun/java.net/net/CClassHeaders/sun_net_spi_DefaultProxySelector.h
build/linux-amd64/tmp/java/java.nio/nio/CClassHeaders/sun_nio_ch_FileChannelImpl.h
build/linux-amd64/tmp/java/java.nio/nio/CClassHeaders/sun_nio_ch_FileDispatcherImpl.h
build/linux-amd64/tmp/java/java.nio/nio/CClassHeaders/sun_nio_ch_FileKey.h
build/linux-amd64/tmp/java/java.nio/nio/CClassHeaders/sun_nio_ch_IOStatus.h
build/linux-amd64/tmp/java/java.nio/nio/CClassHeaders/sun_nio_ch_IOUtil.h
build/linux-amd64/tmp/java/java.nio/nio/CClassHeaders/sun_nio_ch_NativeThread.h
jdk/src/share/native/java/lang/System.c
jdk/src/share/native/java/lang/Thread.c
jdk/src/share/native/java/lang/Throwable.c
jdk/src/solaris/native/java/io/UnixFileSystem_md.c
jdk/src/solaris/native/java/lang/UNIXProcess_md.c
jdk/src/share/native/java/util/zip/zip_util.c
jdk/src/share/native/java/util/zip/zip_util.h
Change-Id: Ib237df4e1b7b5b4d9f12e74d189e6ec9eed3c31d
diff --git a/ojluni/src/main/native/UNIXProcess_md.c b/ojluni/src/main/native/UNIXProcess_md.c
new file mode 100755
index 0000000..6904a44
--- /dev/null
+++ b/ojluni/src/main/native/UNIXProcess_md.c
@@ -0,0 +1,965 @@
+/*
+ * Copyright (c) 1995, 2008, 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.
+ */
+
+#undef _LARGEFILE64_SOURCE
+#define _LARGEFILE64_SOURCE 1
+
+#include "jni.h"
+#include "jvm.h"
+#include "jvm_md.h"
+#include "jni_util.h"
+#include "io_util.h"
+
+/*
+ * Platform-specific support for java.lang.Process
+ */
+#include <assert.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <ctype.h>
+#ifdef _ALLBSD_SOURCE
+#include <sys/wait.h>
+#else
+#include <wait.h>
+#endif
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <limits.h>
+
+#ifdef __APPLE__
+#include <crt_externs.h>
+#define environ (*_NSGetEnviron())
+#endif
+
+/*
+ * There are 3 possible strategies we might use to "fork":
+ *
+ * - fork(2). Very portable and reliable but subject to
+ * failure due to overcommit (see the documentation on
+ * /proc/sys/vm/overcommit_memory in Linux proc(5)).
+ * This is the ancient problem of spurious failure whenever a large
+ * process starts a small subprocess.
+ *
+ * - vfork(). Using this is scary because all relevant man pages
+ * contain dire warnings, e.g. Linux vfork(2). But at least it's
+ * documented in the glibc docs and is standardized by XPG4.
+ * http://www.opengroup.org/onlinepubs/000095399/functions/vfork.html
+ * On Linux, one might think that vfork() would be implemented using
+ * the clone system call with flag CLONE_VFORK, but in fact vfork is
+ * a separate system call (which is a good sign, suggesting that
+ * vfork will continue to be supported at least on Linux).
+ * Another good sign is that glibc implements posix_spawn using
+ * vfork whenever possible. Note that we cannot use posix_spawn
+ * ourselves because there's no reliable way to close all inherited
+ * file descriptors.
+ *
+ * - clone() with flags CLONE_VM but not CLONE_THREAD. clone() is
+ * Linux-specific, but this ought to work - at least the glibc
+ * sources contain code to handle different combinations of CLONE_VM
+ * and CLONE_THREAD. However, when this was implemented, it
+ * appeared to fail on 32-bit i386 (but not 64-bit x86_64) Linux with
+ * the simple program
+ * Runtime.getRuntime().exec("/bin/true").waitFor();
+ * with:
+ * # Internal Error (os_linux_x86.cpp:683), pid=19940, tid=2934639536
+ * # Error: pthread_getattr_np failed with errno = 3 (ESRCH)
+ * We believe this is a glibc bug, reported here:
+ * http://sources.redhat.com/bugzilla/show_bug.cgi?id=10311
+ * but the glibc maintainers closed it as WONTFIX.
+ *
+ * Based on the above analysis, we are currently using vfork() on
+ * Linux and fork() on other Unix systems, but the code to use clone()
+ * remains.
+ */
+
+#define START_CHILD_USE_CLONE 0 /* clone() currently disabled; see above. */
+
+#ifndef START_CHILD_USE_CLONE
+ #ifdef __linux__
+ #define START_CHILD_USE_CLONE 1
+ #else
+ #define START_CHILD_USE_CLONE 0
+ #endif
+#endif
+
+/* By default, use vfork() on Linux. */
+#ifndef START_CHILD_USE_VFORK
+ #ifdef __linux__
+ #define START_CHILD_USE_VFORK 1
+ #else
+ #define START_CHILD_USE_VFORK 0
+ #endif
+#endif
+
+#if START_CHILD_USE_CLONE
+#include <sched.h>
+#define START_CHILD_SYSTEM_CALL "clone"
+#elif START_CHILD_USE_VFORK
+#define START_CHILD_SYSTEM_CALL "vfork"
+#else
+#define START_CHILD_SYSTEM_CALL "fork"
+#endif
+
+#ifndef STDIN_FILENO
+#define STDIN_FILENO 0
+#endif
+
+#ifndef STDOUT_FILENO
+#define STDOUT_FILENO 1
+#endif
+
+#ifndef STDERR_FILENO
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SA_NOCLDSTOP
+#define SA_NOCLDSTOP 0
+#endif
+
+#ifndef SA_RESTART
+#define SA_RESTART 0
+#endif
+
+#define FAIL_FILENO (STDERR_FILENO + 1)
+
+/* TODO: Refactor. */
+#define RESTARTABLE(_cmd, _result) do { \
+ do { \
+ _result = _cmd; \
+ } while((_result == -1) && (errno == EINTR)); \
+} while(0)
+
+/* This is one of the rare times it's more portable to declare an
+ * external symbol explicitly, rather than via a system header.
+ * The declaration is standardized as part of UNIX98, but there is
+ * no standard (not even de-facto) header file where the
+ * declaration is to be found. See:
+ * http://www.opengroup.org/onlinepubs/009695399/functions/environ.html
+ * http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_02.html
+ *
+ * "All identifiers in this volume of IEEE Std 1003.1-2001, except
+ * environ, are defined in at least one of the headers" (!)
+ */
+extern char **environ;
+
+
+static void
+setSIGCHLDHandler(JNIEnv *env)
+{
+ /* There is a subtle difference between having the signal handler
+ * for SIGCHLD be SIG_DFL and SIG_IGN. We cannot obtain process
+ * termination information for child processes if the signal
+ * handler is SIG_IGN. It must be SIG_DFL.
+ *
+ * We used to set the SIGCHLD handler only on Linux, but it's
+ * safest to set it unconditionally.
+ *
+ * Consider what happens if java's parent process sets the SIGCHLD
+ * handler to SIG_IGN. Normally signal handlers are inherited by
+ * children, but SIGCHLD is a controversial case. Solaris appears
+ * to always reset it to SIG_DFL, but this behavior may be
+ * non-standard-compliant, and we shouldn't rely on it.
+ *
+ * References:
+ * http://www.opengroup.org/onlinepubs/7908799/xsh/exec.html
+ * http://www.pasc.org/interps/unofficial/db/p1003.1/pasc-1003.1-132.html
+ */
+ struct sigaction sa;
+ sa.sa_handler = SIG_DFL;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_NOCLDSTOP | SA_RESTART;
+ if (sigaction(SIGCHLD, &sa, NULL) < 0)
+ JNU_ThrowInternalError(env, "Can't set SIGCHLD handler");
+}
+
+static void*
+xmalloc(JNIEnv *env, size_t size)
+{
+ void *p = malloc(size);
+ if (p == NULL)
+ JNU_ThrowOutOfMemoryError(env, NULL);
+ return p;
+}
+
+#define NEW(type, n) ((type *) xmalloc(env, (n) * sizeof(type)))
+
+/**
+ * If PATH is not defined, the OS provides some default value.
+ * Unfortunately, there's no portable way to get this value.
+ * Fortunately, it's only needed if the child has PATH while we do not.
+ */
+static const char*
+defaultPath(void)
+{
+#ifdef __solaris__
+ /* These really are the Solaris defaults! */
+ return (geteuid() == 0 || getuid() == 0) ?
+ "/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin:/usr/sbin" :
+ "/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin:";
+#else
+ return ":/bin:/usr/bin"; /* glibc */
+#endif
+}
+
+static const char*
+effectivePath(void)
+{
+ const char *s = getenv("PATH");
+ return (s != NULL) ? s : defaultPath();
+}
+
+static int
+countOccurrences(const char *s, char c)
+{
+ int count;
+ for (count = 0; *s != '\0'; s++)
+ count += (*s == c);
+ return count;
+}
+
+static const char * const *
+splitPath(JNIEnv *env, const char *path)
+{
+ const char *p, *q;
+ char **pathv;
+ int i;
+ int count = countOccurrences(path, ':') + 1;
+
+ pathv = NEW(char*, count+1);
+ pathv[count] = NULL;
+ for (p = path, i = 0; i < count; i++, p = q + 1) {
+ for (q = p; (*q != ':') && (*q != '\0'); q++)
+ ;
+ if (q == p) /* empty PATH component => "." */
+ pathv[i] = "./";
+ else {
+ int addSlash = ((*(q - 1)) != '/');
+ pathv[i] = NEW(char, q - p + addSlash + 1);
+ memcpy(pathv[i], p, q - p);
+ if (addSlash)
+ pathv[i][q - p] = '/';
+ pathv[i][q - p + addSlash] = '\0';
+ }
+ }
+ return (const char * const *) pathv;
+}
+
+/**
+ * Cached value of JVM's effective PATH.
+ * (We don't support putenv("PATH=...") in native code)
+ */
+static const char *parentPath;
+
+/**
+ * Split, canonicalized version of parentPath
+ */
+static const char * const *parentPathv;
+
+static jfieldID field_exitcode;
+
+JNIEXPORT void JNICALL
+Java_java_lang_UNIXProcess_initIDs(JNIEnv *env, jclass clazz)
+{
+ field_exitcode = (*env)->GetFieldID(env, clazz, "exitcode", "I");
+
+ parentPath = effectivePath();
+ parentPathv = splitPath(env, parentPath);
+
+ setSIGCHLDHandler(env);
+}
+
+
+#ifndef WIFEXITED
+#define WIFEXITED(status) (((status)&0xFF) == 0)
+#endif
+
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(status) (((status)>>8)&0xFF)
+#endif
+
+#ifndef WIFSIGNALED
+#define WIFSIGNALED(status) (((status)&0xFF) > 0 && ((status)&0xFF00) == 0)
+#endif
+
+#ifndef WTERMSIG
+#define WTERMSIG(status) ((status)&0x7F)
+#endif
+
+/* Block until a child process exits and return its exit code.
+ Note, can only be called once for any given pid. */
+JNIEXPORT jint JNICALL
+Java_java_lang_UNIXProcess_waitForProcessExit(JNIEnv* env,
+ jobject junk,
+ jint pid)
+{
+ /* We used to use waitid() on Solaris, waitpid() on Linux, but
+ * waitpid() is more standard, so use it on all POSIX platforms. */
+ int status;
+ /* Wait for the child process to exit. This returns immediately if
+ the child has already exited. */
+ while (waitpid(pid, &status, 0) < 0) {
+ switch (errno) {
+ case ECHILD: return 0;
+ case EINTR: break;
+ default: return -1;
+ }
+ }
+
+ if (WIFEXITED(status)) {
+ /*
+ * The child exited normally; get its exit code.
+ */
+ return WEXITSTATUS(status);
+ } else if (WIFSIGNALED(status)) {
+ /* The child exited because of a signal.
+ * The best value to return is 0x80 + signal number,
+ * because that is what all Unix shells do, and because
+ * it allows callers to distinguish between process exit and
+ * process death by signal.
+ * Unfortunately, the historical behavior on Solaris is to return
+ * the signal number, and we preserve this for compatibility. */
+#ifdef __solaris__
+ return WTERMSIG(status);
+#else
+ return 0x80 + WTERMSIG(status);
+#endif
+ } else {
+ /*
+ * Unknown exit code; pass it through.
+ */
+ return status;
+ }
+}
+
+static ssize_t
+restartableWrite(int fd, const void *buf, size_t count)
+{
+ ssize_t result;
+ RESTARTABLE(write(fd, buf, count), result);
+ return result;
+}
+
+static int
+restartableDup2(int fd_from, int fd_to)
+{
+ int err;
+ RESTARTABLE(dup2(fd_from, fd_to), err);
+ return err;
+}
+
+static int
+restartableClose(int fd)
+{
+ int err;
+ RESTARTABLE(close(fd), err);
+ return err;
+}
+
+static int
+closeSafely(int fd)
+{
+ return (fd == -1) ? 0 : restartableClose(fd);
+}
+
+static int
+isAsciiDigit(char c)
+{
+ return c >= '0' && c <= '9';
+}
+
+#ifdef _ALLBSD_SOURCE
+#define FD_DIR "/dev/fd"
+#define dirent64 dirent
+#define readdir64 readdir
+#else
+#define FD_DIR "/proc/self/fd"
+#endif
+
+static int
+closeDescriptors(void)
+{
+ DIR *dp;
+ struct dirent64 *dirp;
+ int from_fd = FAIL_FILENO + 1;
+
+ /* We're trying to close all file descriptors, but opendir() might
+ * itself be implemented using a file descriptor, and we certainly
+ * don't want to close that while it's in use. We assume that if
+ * opendir() is implemented using a file descriptor, then it uses
+ * the lowest numbered file descriptor, just like open(). So we
+ * close a couple explicitly. */
+
+ restartableClose(from_fd); /* for possible use by opendir() */
+ restartableClose(from_fd + 1); /* another one for good luck */
+
+ if ((dp = opendir(FD_DIR)) == NULL)
+ return 0;
+
+ /* We use readdir64 instead of readdir to work around Solaris bug
+ * 6395699: /proc/self/fd fails to report file descriptors >= 1024 on Solaris 9
+ */
+ while ((dirp = readdir64(dp)) != NULL) {
+ int fd;
+ if (isAsciiDigit(dirp->d_name[0]) &&
+ (fd = strtol(dirp->d_name, NULL, 10)) >= from_fd + 2)
+ restartableClose(fd);
+ }
+
+ closedir(dp);
+
+ return 1;
+}
+
+static int
+moveDescriptor(int fd_from, int fd_to)
+{
+ if (fd_from != fd_to) {
+ if ((restartableDup2(fd_from, fd_to) == -1) ||
+ (restartableClose(fd_from) == -1))
+ return -1;
+ }
+ return 0;
+}
+
+static const char *
+getBytes(JNIEnv *env, jbyteArray arr)
+{
+ return arr == NULL ? NULL :
+ (const char*) (*env)->GetByteArrayElements(env, arr, NULL);
+}
+
+static void
+releaseBytes(JNIEnv *env, jbyteArray arr, const char* parr)
+{
+ if (parr != NULL)
+ (*env)->ReleaseByteArrayElements(env, arr, (jbyte*) parr, JNI_ABORT);
+}
+
+static void
+initVectorFromBlock(const char**vector, const char* block, int count)
+{
+ int i;
+ const char *p;
+ for (i = 0, p = block; i < count; i++) {
+ /* Invariant: p always points to the start of a C string. */
+ vector[i] = p;
+ while (*(p++));
+ }
+ vector[count] = NULL;
+}
+
+static void
+throwIOException(JNIEnv *env, int errnum, const char *defaultDetail)
+{
+ static const char * const format = "error=%d, %s";
+ const char *detail = defaultDetail;
+ char *errmsg;
+ jstring s;
+
+ if (errnum != 0) {
+ const char *s = strerror(errnum);
+ if (strcmp(s, "Unknown error") != 0)
+ detail = s;
+ }
+ /* ASCII Decimal representation uses 2.4 times as many bits as binary. */
+ errmsg = NEW(char, strlen(format) + strlen(detail) + 3 * sizeof(errnum));
+ sprintf(errmsg, format, errnum, detail);
+ s = JNU_NewStringPlatform(env, errmsg);
+ if (s != NULL) {
+ jobject x = JNU_NewObjectByName(env, "java/io/IOException",
+ "(Ljava/lang/String;)V", s);
+ if (x != NULL)
+ (*env)->Throw(env, x);
+ }
+ free(errmsg);
+}
+
+#ifdef DEBUG_PROCESS
+/* Debugging process code is difficult; where to write debug output? */
+static void
+debugPrint(char *format, ...)
+{
+ FILE *tty = fopen("/dev/tty", "w");
+ va_list ap;
+ va_start(ap, format);
+ vfprintf(tty, format, ap);
+ va_end(ap);
+ fclose(tty);
+}
+#endif /* DEBUG_PROCESS */
+
+/**
+ * Exec FILE as a traditional Bourne shell script (i.e. one without #!).
+ * If we could do it over again, we would probably not support such an ancient
+ * misfeature, but compatibility wins over sanity. The original support for
+ * this was imported accidentally from execvp().
+ */
+static void
+execve_as_traditional_shell_script(const char *file,
+ const char *argv[],
+ const char *const envp[])
+{
+ /* Use the extra word of space provided for us in argv by caller. */
+ const char *argv0 = argv[0];
+ const char *const *end = argv;
+ while (*end != NULL)
+ ++end;
+ memmove(argv+2, argv+1, (end-argv) * sizeof (*end));
+ argv[0] = "/bin/sh";
+ argv[1] = file;
+ execve(argv[0], (char **) argv, (char **) envp);
+ /* Can't even exec /bin/sh? Big trouble, but let's soldier on... */
+ memmove(argv+1, argv+2, (end-argv) * sizeof (*end));
+ argv[0] = argv0;
+}
+
+/**
+ * Like execve(2), except that in case of ENOEXEC, FILE is assumed to
+ * be a shell script and the system default shell is invoked to run it.
+ */
+static void
+execve_with_shell_fallback(const char *file,
+ const char *argv[],
+ const char *const envp[])
+{
+#if START_CHILD_USE_CLONE || START_CHILD_USE_VFORK
+ /* shared address space; be very careful. */
+ execve(file, (char **) argv, (char **) envp);
+ if (errno == ENOEXEC)
+ execve_as_traditional_shell_script(file, argv, envp);
+#else
+ /* unshared address space; we can mutate environ. */
+ environ = (char **) envp;
+ execvp(file, (char **) argv);
+#endif
+}
+
+/**
+ * 'execvpe' should have been included in the Unix standards,
+ * and is a GNU extension in glibc 2.10.
+ *
+ * JDK_execvpe is identical to execvp, except that the child environment is
+ * specified via the 3rd argument instead of being inherited from environ.
+ */
+static void
+JDK_execvpe(const char *file,
+ const char *argv[],
+ const char *const envp[])
+{
+ if (envp == NULL || (char **) envp == environ) {
+ execvp(file, (char **) argv);
+ return;
+ }
+
+ if (*file == '\0') {
+ errno = ENOENT;
+ return;
+ }
+
+ if (strchr(file, '/') != NULL) {
+ execve_with_shell_fallback(file, argv, envp);
+ } else {
+ /* We must search PATH (parent's, not child's) */
+ char expanded_file[PATH_MAX];
+ int filelen = strlen(file);
+ int sticky_errno = 0;
+ const char * const * dirs;
+ for (dirs = parentPathv; *dirs; dirs++) {
+ const char * dir = *dirs;
+ int dirlen = strlen(dir);
+ if (filelen + dirlen + 1 >= PATH_MAX) {
+ errno = ENAMETOOLONG;
+ continue;
+ }
+ memcpy(expanded_file, dir, dirlen);
+ memcpy(expanded_file + dirlen, file, filelen);
+ expanded_file[dirlen + filelen] = '\0';
+ execve_with_shell_fallback(expanded_file, argv, envp);
+ /* There are 3 responses to various classes of errno:
+ * return immediately, continue (especially for ENOENT),
+ * or continue with "sticky" errno.
+ *
+ * From exec(3):
+ *
+ * If permission is denied for a file (the attempted
+ * execve returned EACCES), these functions will continue
+ * searching the rest of the search path. If no other
+ * file is found, however, they will return with the
+ * global variable errno set to EACCES.
+ */
+ switch (errno) {
+ case EACCES:
+ sticky_errno = errno;
+ /* FALLTHRU */
+ case ENOENT:
+ case ENOTDIR:
+#ifdef ELOOP
+ case ELOOP:
+#endif
+#ifdef ESTALE
+ case ESTALE:
+#endif
+#ifdef ENODEV
+ case ENODEV:
+#endif
+#ifdef ETIMEDOUT
+ case ETIMEDOUT:
+#endif
+ break; /* Try other directories in PATH */
+ default:
+ return;
+ }
+ }
+ if (sticky_errno != 0)
+ errno = sticky_errno;
+ }
+}
+
+/*
+ * Reads nbyte bytes from file descriptor fd into buf,
+ * The read operation is retried in case of EINTR or partial reads.
+ *
+ * Returns number of bytes read (normally nbyte, but may be less in
+ * case of EOF). In case of read errors, returns -1 and sets errno.
+ */
+static ssize_t
+readFully(int fd, void *buf, size_t nbyte)
+{
+ ssize_t remaining = nbyte;
+ for (;;) {
+ ssize_t n = read(fd, buf, remaining);
+ if (n == 0) {
+ return nbyte - remaining;
+ } else if (n > 0) {
+ remaining -= n;
+ if (remaining <= 0)
+ return nbyte;
+ /* We were interrupted in the middle of reading the bytes.
+ * Unlikely, but possible. */
+ buf = (void *) (((char *)buf) + n);
+ } else if (errno == EINTR) {
+ /* Strange signals like SIGJVM1 are possible at any time.
+ * See http://www.dreamsongs.com/WorseIsBetter.html */
+ } else {
+ return -1;
+ }
+ }
+}
+
+typedef struct _ChildStuff
+{
+ int in[2];
+ int out[2];
+ int err[2];
+ int fail[2];
+ int fds[3];
+ const char **argv;
+ const char **envv;
+ const char *pdir;
+ jboolean redirectErrorStream;
+#if START_CHILD_USE_CLONE
+ void *clone_stack;
+#endif
+} ChildStuff;
+
+static void
+copyPipe(int from[2], int to[2])
+{
+ to[0] = from[0];
+ to[1] = from[1];
+}
+
+/**
+ * Child process after a successful fork() or clone().
+ * This function must not return, and must be prepared for either all
+ * of its address space to be shared with its parent, or to be a copy.
+ * It must not modify global variables such as "environ".
+ */
+static int
+childProcess(void *arg)
+{
+ const ChildStuff* p = (const ChildStuff*) arg;
+
+ /* Close the parent sides of the pipes.
+ Closing pipe fds here is redundant, since closeDescriptors()
+ would do it anyways, but a little paranoia is a good thing. */
+ if ((closeSafely(p->in[1]) == -1) ||
+ (closeSafely(p->out[0]) == -1) ||
+ (closeSafely(p->err[0]) == -1) ||
+ (closeSafely(p->fail[0]) == -1))
+ goto WhyCantJohnnyExec;
+
+ /* Give the child sides of the pipes the right fileno's. */
+ /* Note: it is possible for in[0] == 0 */
+ if ((moveDescriptor(p->in[0] != -1 ? p->in[0] : p->fds[0],
+ STDIN_FILENO) == -1) ||
+ (moveDescriptor(p->out[1]!= -1 ? p->out[1] : p->fds[1],
+ STDOUT_FILENO) == -1))
+ goto WhyCantJohnnyExec;
+
+ if (p->redirectErrorStream) {
+ if ((closeSafely(p->err[1]) == -1) ||
+ (restartableDup2(STDOUT_FILENO, STDERR_FILENO) == -1))
+ goto WhyCantJohnnyExec;
+ } else {
+ if (moveDescriptor(p->err[1] != -1 ? p->err[1] : p->fds[2],
+ STDERR_FILENO) == -1)
+ goto WhyCantJohnnyExec;
+ }
+
+ if (moveDescriptor(p->fail[1], FAIL_FILENO) == -1)
+ goto WhyCantJohnnyExec;
+
+ /* close everything */
+ if (closeDescriptors() == 0) { /* failed, close the old way */
+ int max_fd = (int)sysconf(_SC_OPEN_MAX);
+ int fd;
+ for (fd = FAIL_FILENO + 1; fd < max_fd; fd++)
+ if (restartableClose(fd) == -1 && errno != EBADF)
+ goto WhyCantJohnnyExec;
+ }
+
+ /* change to the new working directory */
+ if (p->pdir != NULL && chdir(p->pdir) < 0)
+ goto WhyCantJohnnyExec;
+
+ if (fcntl(FAIL_FILENO, F_SETFD, FD_CLOEXEC) == -1)
+ goto WhyCantJohnnyExec;
+
+ JDK_execvpe(p->argv[0], p->argv, p->envv);
+
+ WhyCantJohnnyExec:
+ /* We used to go to an awful lot of trouble to predict whether the
+ * child would fail, but there is no reliable way to predict the
+ * success of an operation without *trying* it, and there's no way
+ * to try a chdir or exec in the parent. Instead, all we need is a
+ * way to communicate any failure back to the parent. Easy; we just
+ * send the errno back to the parent over a pipe in case of failure.
+ * The tricky thing is, how do we communicate the *success* of exec?
+ * We use FD_CLOEXEC together with the fact that a read() on a pipe
+ * yields EOF when the write ends (we have two of them!) are closed.
+ */
+ {
+ int errnum = errno;
+ restartableWrite(FAIL_FILENO, &errnum, sizeof(errnum));
+ }
+ restartableClose(FAIL_FILENO);
+ _exit(-1);
+ return 0; /* Suppress warning "no return value from function" */
+}
+
+/**
+ * Start a child process running function childProcess.
+ * This function only returns in the parent.
+ * We are unusually paranoid; use of clone/vfork is
+ * especially likely to tickle gcc/glibc bugs.
+ */
+#ifdef __attribute_noinline__ /* See: sys/cdefs.h */
+__attribute_noinline__
+#endif
+static pid_t
+startChild(ChildStuff *c) {
+#if START_CHILD_USE_CLONE
+#define START_CHILD_CLONE_STACK_SIZE (64 * 1024)
+ /*
+ * See clone(2).
+ * Instead of worrying about which direction the stack grows, just
+ * allocate twice as much and start the stack in the middle.
+ */
+ if ((c->clone_stack = malloc(2 * START_CHILD_CLONE_STACK_SIZE)) == NULL)
+ /* errno will be set to ENOMEM */
+ return -1;
+ return clone(childProcess,
+ c->clone_stack + START_CHILD_CLONE_STACK_SIZE,
+ CLONE_VFORK | CLONE_VM | SIGCHLD, c);
+#else
+ #if START_CHILD_USE_VFORK
+ /*
+ * We separate the call to vfork into a separate function to make
+ * very sure to keep stack of child from corrupting stack of parent,
+ * as suggested by the scary gcc warning:
+ * warning: variable 'foo' might be clobbered by 'longjmp' or 'vfork'
+ */
+ volatile pid_t resultPid = vfork();
+ #else
+ /*
+ * From Solaris fork(2): In Solaris 10, a call to fork() is
+ * identical to a call to fork1(); only the calling thread is
+ * replicated in the child process. This is the POSIX-specified
+ * behavior for fork().
+ */
+ pid_t resultPid = fork();
+ #endif
+ if (resultPid == 0)
+ childProcess(c);
+ assert(resultPid != 0); /* childProcess never returns */
+ return resultPid;
+#endif /* ! START_CHILD_USE_CLONE */
+}
+
+JNIEXPORT jint JNICALL
+Java_java_lang_UNIXProcess_forkAndExec(JNIEnv *env,
+ jobject process,
+ jbyteArray prog,
+ jbyteArray argBlock, jint argc,
+ jbyteArray envBlock, jint envc,
+ jbyteArray dir,
+ jintArray std_fds,
+ jboolean redirectErrorStream)
+{
+ int errnum;
+ int resultPid = -1;
+ int in[2], out[2], err[2], fail[2];
+ jint *fds = NULL;
+ const char *pprog = NULL;
+ const char *pargBlock = NULL;
+ const char *penvBlock = NULL;
+ ChildStuff *c;
+
+ in[0] = in[1] = out[0] = out[1] = err[0] = err[1] = fail[0] = fail[1] = -1;
+
+ if ((c = NEW(ChildStuff, 1)) == NULL) return -1;
+ c->argv = NULL;
+ c->envv = NULL;
+ c->pdir = NULL;
+#if START_CHILD_USE_CLONE
+ c->clone_stack = NULL;
+#endif
+
+ /* Convert prog + argBlock into a char ** argv.
+ * Add one word room for expansion of argv for use by
+ * execve_as_traditional_shell_script.
+ */
+ assert(prog != NULL && argBlock != NULL);
+ if ((pprog = getBytes(env, prog)) == NULL) goto Catch;
+ if ((pargBlock = getBytes(env, argBlock)) == NULL) goto Catch;
+ if ((c->argv = NEW(const char *, argc + 3)) == NULL) goto Catch;
+ c->argv[0] = pprog;
+ initVectorFromBlock(c->argv+1, pargBlock, argc);
+
+ if (envBlock != NULL) {
+ /* Convert envBlock into a char ** envv */
+ if ((penvBlock = getBytes(env, envBlock)) == NULL) goto Catch;
+ if ((c->envv = NEW(const char *, envc + 1)) == NULL) goto Catch;
+ initVectorFromBlock(c->envv, penvBlock, envc);
+ }
+
+ if (dir != NULL) {
+ if ((c->pdir = getBytes(env, dir)) == NULL) goto Catch;
+ }
+
+ assert(std_fds != NULL);
+ fds = (*env)->GetIntArrayElements(env, std_fds, NULL);
+ if (fds == NULL) goto Catch;
+
+ if ((fds[0] == -1 && pipe(in) < 0) ||
+ (fds[1] == -1 && pipe(out) < 0) ||
+ (fds[2] == -1 && pipe(err) < 0) ||
+ (pipe(fail) < 0)) {
+ throwIOException(env, errno, "Bad file descriptor");
+ goto Catch;
+ }
+ c->fds[0] = fds[0];
+ c->fds[1] = fds[1];
+ c->fds[2] = fds[2];
+
+ copyPipe(in, c->in);
+ copyPipe(out, c->out);
+ copyPipe(err, c->err);
+ copyPipe(fail, c->fail);
+
+ c->redirectErrorStream = redirectErrorStream;
+
+ resultPid = startChild(c);
+ assert(resultPid != 0);
+
+ if (resultPid < 0) {
+ throwIOException(env, errno, START_CHILD_SYSTEM_CALL " failed");
+ goto Catch;
+ }
+
+ restartableClose(fail[1]); fail[1] = -1; /* See: WhyCantJohnnyExec */
+
+ switch (readFully(fail[0], &errnum, sizeof(errnum))) {
+ case 0: break; /* Exec succeeded */
+ case sizeof(errnum):
+ waitpid(resultPid, NULL, 0);
+ throwIOException(env, errnum, "Exec failed");
+ goto Catch;
+ default:
+ throwIOException(env, errno, "Read failed");
+ goto Catch;
+ }
+
+ fds[0] = (in [1] != -1) ? in [1] : -1;
+ fds[1] = (out[0] != -1) ? out[0] : -1;
+ fds[2] = (err[0] != -1) ? err[0] : -1;
+
+ Finally:
+#if START_CHILD_USE_CLONE
+ free(c->clone_stack);
+#endif
+
+ /* Always clean up the child's side of the pipes */
+ closeSafely(in [0]);
+ closeSafely(out[1]);
+ closeSafely(err[1]);
+
+ /* Always clean up fail descriptors */
+ closeSafely(fail[0]);
+ closeSafely(fail[1]);
+
+ releaseBytes(env, prog, pprog);
+ releaseBytes(env, argBlock, pargBlock);
+ releaseBytes(env, envBlock, penvBlock);
+ releaseBytes(env, dir, c->pdir);
+
+ free(c->argv);
+ free(c->envv);
+ free(c);
+
+ if (fds != NULL)
+ (*env)->ReleaseIntArrayElements(env, std_fds, fds, 0);
+
+ return resultPid;
+
+ Catch:
+ /* Clean up the parent's side of the pipes in case of failure only */
+ closeSafely(in [1]);
+ closeSafely(out[0]);
+ closeSafely(err[0]);
+ goto Finally;
+}
+
+JNIEXPORT void JNICALL
+Java_java_lang_UNIXProcess_destroyProcess(JNIEnv *env, jobject junk, jint pid)
+{
+ kill(pid, SIGTERM);
+}