| /* cpproc.c - |
| Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| #include "config.h" |
| #include <jni.h> |
| #include "cpproc.h" |
| #include <signal.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| |
| static void close_all_fds(int *fds, int numFds) |
| { |
| int i; |
| |
| for (i = 0; i < numFds; i++) |
| close(fds[i]); |
| } |
| |
| int cpproc_forkAndExec (char * const *commandLine, char * const * newEnviron, |
| int *fds, int pipe_count, pid_t *out_pid, const char *wd) |
| { |
| int local_fds[6]; |
| int i; |
| pid_t pid; |
| |
| for (i = 0; i < (pipe_count * 2); i += 2) |
| { |
| if (pipe(&local_fds[i]) < 0) |
| { |
| int err = errno; |
| |
| close_all_fds(local_fds, i); |
| |
| return err; |
| } |
| } |
| |
| pid = fork(); |
| |
| switch (pid) |
| { |
| case 0: |
| dup2(local_fds[0], 0); |
| dup2(local_fds[3], 1); |
| if (pipe_count == 3) |
| dup2(local_fds[5], 2); |
| else |
| dup2(1, 2); |
| |
| close_all_fds(local_fds, pipe_count * 2); |
| |
| chdir(wd); |
| if (newEnviron == NULL) |
| execvp(commandLine[0], commandLine); |
| else |
| execve(commandLine[0], commandLine, newEnviron); |
| |
| abort(); |
| |
| break; |
| case -1: |
| { |
| int err = errno; |
| |
| close_all_fds(local_fds, pipe_count * 2); |
| return err; |
| } |
| default: |
| close(local_fds[0]); |
| close(local_fds[3]); |
| if (pipe_count == 3) |
| close(local_fds[5]); |
| |
| fds[0] = local_fds[1]; |
| fds[1] = local_fds[2]; |
| fds[2] = local_fds[4]; |
| *out_pid = pid; |
| return 0; |
| } |
| |
| /* keep compiler happy */ |
| |
| return 0; |
| } |
| |
| int cpproc_waitpid (pid_t pid, int *status, pid_t *outpid, int options) |
| { |
| pid_t wp = waitpid(pid, status, options); |
| |
| if (wp < 0) |
| return errno; |
| |
| *outpid = wp; |
| return 0; |
| } |
| |
| int cpproc_kill (pid_t pid, int signal) |
| { |
| if (kill(pid, signal) < 0) |
| return errno; |
| |
| return 0; |
| } |