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/* vi: set sw=4 ts=4: */
/*
* openvt.c - open a vt to run a command.
*
* busyboxed by Quy Tonthat <quy@signal3.com>
* hacked by Tito <farmatito@tiscali.it>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* getopt not needed */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <ctype.h>
#include "busybox.h"
#define VTNAME "/dev/tty%d"
int openvt_main(int argc, char **argv)
{
int pid;
int fd;
int vtno;
char vtname[sizeof VTNAME + 2];
if (argc < 3)
bb_show_usage();
if (!isdigit(argv[1][0]))
bb_show_usage();
vtno = (int) atol(argv[1]);
/* if (vtno <= 0 || vtno > 63) */
if (vtno <= 0 || vtno > 12)
bb_error_msg_and_die("Illegal vt number (%d)", vtno);
sprintf(vtname, VTNAME, vtno);
argv+=2;
argc-=2;
if((pid = fork()) == 0) {
/* leave current vt */
#ifdef ESIX_5_3_2_D
if (setpgrp() < 0) {
#else
if (setsid() < 0) {
#endif
bb_perror_msg_and_die("Unable to set new session");
}
close(0); /* so that new vt becomes stdin */
/* and grab new one */
if ((fd = open(vtname, O_RDWR)) == -1)
bb_perror_msg_and_die("could not open %s", vtname);
/* Reassign stdout and sterr */
close(1);
close(2);
dup(fd);
dup(fd);
execvp(argv[0], argv);
_exit(1);
}
return EXIT_SUCCESS;
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
|
