60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
|
|
* GNU Mes --- Maxwell Equations of Software
|
|
* Copyright © 2018,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
|
*
|
|
* This file is part of GNU Mes.
|
|
*
|
|
* GNU Mes 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 3 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* GNU Mes 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 Mes. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <mes/lib.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
|
|
#ifndef SHELL_FILE_NAME
|
|
#define SHELL_FILE_NAME "/bin/sh"
|
|
#endif
|
|
#ifndef SHELL_COMMAND_NAME
|
|
#define SHELL_COMMAND_NAME "sh"
|
|
#endif
|
|
|
|
int
|
|
system (char const *command)
|
|
{
|
|
pid_t pid = fork ();
|
|
if (pid == -1)
|
|
return -1;
|
|
else if (pid == 0)
|
|
{
|
|
// child
|
|
char const *argv[4];
|
|
argv[0] = SHELL_COMMAND_NAME;
|
|
argv[1] = "-c";
|
|
argv[2] = command;
|
|
argv[3] = 0;
|
|
execve (SHELL_FILE_NAME, (char *const *) argv, environ);
|
|
_exit (127);
|
|
}
|
|
|
|
// parent
|
|
int status;
|
|
pid_t child_pid = waitpid (pid, &status, 0);
|
|
if (child_pid != pid)
|
|
return -1;
|
|
|
|
return status;
|
|
}
|