| /* |
| * Copyright (c) 2013, 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. |
| */ |
| |
| #ifndef CHILDPROC_MD_H |
| #define CHILDPROC_MD_H |
| |
| #include <sys/types.h> |
| |
| #ifdef __APPLE__ |
| #include <crt_externs.h> |
| #define environ (*_NSGetEnviron()) |
| #else |
| /* 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; |
| #endif |
| |
| #ifdef __linux__ |
| #include <sched.h> |
| #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) |
| |
| /* These numbers must be the same as the Enum in UNIXProcess.java |
| * Must be a better way of doing this. |
| */ |
| #define MODE_FORK 1 |
| #define MODE_POSIX_SPAWN 2 |
| #define MODE_VFORK 3 |
| #define MODE_CLONE 4 |
| |
| typedef struct _ChildStuff |
| { |
| int in[2]; |
| int out[2]; |
| int err[2]; |
| int fail[2]; |
| int childenv[2]; |
| int fds[3]; |
| int mode; |
| const char **argv; |
| int argc; |
| const char **envv; |
| const char *pdir; |
| int redirectErrorStream; |
| void *clone_stack; |
| } ChildStuff; |
| |
| /* following used in addition when mode is SPAWN */ |
| typedef struct _SpawnInfo { |
| int nargv; /* number of argv array elements */ |
| int argvBytes; /* total number of bytes in argv array */ |
| int nenvv; /* number of envv array elements */ |
| int envvBytes; /* total number of bytes in envv array */ |
| int dirlen; /* length of home directory string */ |
| int nparentPathv; /* number of elements in parentPathv array */ |
| int parentPathvBytes; /* total number of bytes in parentPathv array */ |
| } SpawnInfo; |
| |
| /** |
| * The cached and split version of the JDK's effective PATH. |
| * (We don't support putenv("PATH=...") in native code) |
| */ |
| const char * const *parentPathv; |
| |
| ssize_t restartableWrite(int fd, const void *buf, size_t count); |
| int restartableDup2(int fd_from, int fd_to); |
| int closeSafely(int fd); |
| int isAsciiDigit(char c); |
| int closeDescriptors(void); |
| int moveDescriptor(int fd_from, int fd_to); |
| |
| int magicNumber(); |
| ssize_t readFully(int fd, void *buf, size_t nbyte); |
| void initVectorFromBlock(const char**vector, const char* block, int count); |
| void execve_as_traditional_shell_script(const char *file, |
| const char *argv[], |
| const char *const envp[]); |
| void execve_with_shell_fallback(int mode, const char *file, |
| const char *argv[], |
| const char *const envp[]); |
| void JDK_execvpe(int mode, const char *file, |
| const char *argv[], |
| const char *const envp[]); |
| int childProcess(void *arg); |
| |
| #endif |