mirror of git://gcc.gnu.org/git/gcc.git
142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/* cpproc.c -
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Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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#include "config.h"
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#include <jni.h>
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#include "cpproc.h"
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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static void close_all_fds(int *fds, int numFds)
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{
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int i;
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for (i = 0; i < numFds; i++)
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close(fds[i]);
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}
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int cpproc_forkAndExec (char * const *commandLine, char * const * newEnviron,
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int *fds, int pipe_count, pid_t *out_pid, const char *wd)
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{
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int local_fds[6];
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int i;
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pid_t pid;
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for (i = 0; i < (pipe_count * 2); i += 2)
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{
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if (pipe(&local_fds[i]) < 0)
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{
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int err = errno;
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close_all_fds(local_fds, i);
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return err;
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}
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}
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pid = fork();
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switch (pid)
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{
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case 0:
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dup2(local_fds[0], 0);
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dup2(local_fds[3], 1);
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if (pipe_count == 3)
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dup2(local_fds[5], 2);
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else
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dup2(1, 2);
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close_all_fds(local_fds, pipe_count * 2);
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i = chdir(wd);
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/* FIXME: Handle the return value */
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if (newEnviron == NULL)
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execvp(commandLine[0], commandLine);
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else
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execve(commandLine[0], commandLine, newEnviron);
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abort();
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break;
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case -1:
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{
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int err = errno;
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close_all_fds(local_fds, pipe_count * 2);
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return err;
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}
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default:
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close(local_fds[0]);
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close(local_fds[3]);
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if (pipe_count == 3)
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close(local_fds[5]);
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fds[0] = local_fds[1];
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fds[1] = local_fds[2];
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fds[2] = local_fds[4];
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*out_pid = pid;
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return 0;
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}
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/* keep compiler happy */
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return 0;
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}
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int cpproc_waitpid (pid_t pid, int *status, pid_t *outpid, int options)
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{
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pid_t wp = waitpid(pid, status, options);
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if (wp < 0)
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return errno;
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*outpid = wp;
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return 0;
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}
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int cpproc_kill (pid_t pid, int signal)
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{
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if (kill(pid, signal) < 0)
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return errno;
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return 0;
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}
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