126 строки
3.1 KiB
C
126 строки
3.1 KiB
C
/* Various utilities - Unix variants
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Copyright (C) 1998 the Free Software Foundation.
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Written 1998 by:
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Miguel de Icaza
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This program 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 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU 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 this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include <config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <fcntl.h>
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#include <signal.h> /* my_system */
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#include <limits.h> /* INT_MAX */
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#include <sys/time.h> /* select: timeout */
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdarg.h>
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#ifdef HAVE_SYS_WAIT_H
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# include <sys/wait.h> /* my_system */
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#endif
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#include <errno.h> /* my_system */
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#include <pwd.h>
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#include <grp.h>
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#include <string.h>
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#include <ctype.h>
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#ifdef HAVE_SYS_SELECT_H
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# include <sys/select.h>
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#endif
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#include <gnome.h>
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#include <X11/Xlib.h>
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#include <gdk/gdkprivate.h>
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#include "global.h"
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int my_system (int flags, const char *shell, const char *command)
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{
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pid_t pid;
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struct sigaction ignore, save_intr, save_quit, save_stop;
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int status = 0, i;
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ignore.sa_handler = SIG_IGN;
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sigemptyset (&ignore.sa_mask);
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ignore.sa_flags = 0;
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sigaction (SIGINT, &ignore, &save_intr);
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sigaction (SIGQUIT, &ignore, &save_quit);
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if ((pid = fork ()) < 0){
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return -1;
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}
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if (pid == 0){
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const int top = max_open_files ();
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struct sigaction default_pipe;
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sigaction (SIGINT, &save_intr, NULL);
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sigaction (SIGQUIT, &save_quit, NULL);
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/*
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* reset sigpipe
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*/
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default_pipe.sa_handler = SIG_DFL;
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sigemptyset (&default_pipe.sa_mask);
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default_pipe.sa_flags = 0;
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sigaction (SIGPIPE, &default_pipe, NULL);
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for (i = 0; i < top; i++)
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close (i);
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/* Setup the file descriptor for the child */
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/* stdin */
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open ("/dev/null", O_RDONLY);
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/* stdout */
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open ("/dev/null", O_WRONLY);
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/* stderr */
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open ("/dev/null", O_WRONLY);
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if (!(flags & EXECUTE_WAIT))
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pid = fork ();
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if (pid == 0){
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if (flags & EXECUTE_AS_SHELL)
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execl (shell, shell, "-c", command, (char *) 0);
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else
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execlp (shell, shell, command, (char *) 0);
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/* See note below for why we use _exit () */
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_exit (127); /* Exec error */
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} else {
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int status;
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if (flags & EXECUTE_WAIT)
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waitpid (pid, &status, 0);
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}
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/* We need to use _exit instead of exit to avoid
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* calling the atexit handlers (specifically the gdk atexit
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* handler
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*/
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_exit (0);
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}
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waitpid (pid, &status, 0);
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sigaction (SIGINT, &save_intr, NULL);
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sigaction (SIGQUIT, &save_quit, NULL);
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sigaction (SIGTSTP, &save_stop, NULL);
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return WEXITSTATUS(status);
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}
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