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98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* openvt.c - open a vt to run a command.
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*
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* busyboxed by Quy Tonthat <quy@signal3.com>
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*
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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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*
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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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*
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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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*/
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/* getopt not needed */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/types.h>
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#include "busybox.h"
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#define VTNAME "/dev/tty%d"
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int openvt_main(int argc, char **argv)
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{
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int pid;
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int fd;
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int vtno;
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char vtname[sizeof VTNAME + 2];
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char * cmd = NULL;
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char * cmd_args = NULL;
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if (argc < 3)
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show_usage();
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if (!isdigit(argv[1][0]))
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show_usage();
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vtno = (int) atol(argv[1]);
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/* if (vtno <= 0 || vtno > 63) */
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if (vtno <= 0 || vtno > 12)
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error_msg_and_die("Illegal vt number (%d)", vtno);
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sprintf(vtname, VTNAME, vtno);
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cmd = argv[2];
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cmd_args = xmalloc(80);
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cmd_args[0] = '\0';
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if((pid = fork()) == 0) {
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/* leave current vt */
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#ifdef ESIX_5_3_2_D
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if (setpgrp() < 0) {
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#else
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if (setsid() < 0) {
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#endif
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perror_msg_and_die("Unable to set new session");
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}
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close(0); /* so that new vt becomes stdin */
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/* and grab new one */
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if ((fd = open(vtname, O_RDWR)) == -1)
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perror_msg_and_die("could not open %s", vtname);
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/* Reassign stdout and sterr */
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close(1);
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close(2);
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dup(fd);
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dup(fd);
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execvp(cmd, &argv[2]);
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/*execlp(cmd, cmd_args);*/
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_exit(1);
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}
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return EXIT_SUCCESS;
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}
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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