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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>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* getopt not needed */
#include "busybox.h"
int openvt_main(int argc, char **argv)
{
int fd;
char vtname[sizeof(VC_FORMAT) + 2];
if (argc < 3) {
bb_show_usage();
}
/* check for illegal vt number: < 1 or > 63 */
sprintf(vtname, VC_FORMAT, (int)xatoul_range(argv[1], 1, 63));
if (fork() == 0) {
/* child */
/* leave current vt (controlling tty) */
setsid();
/* and grab new one */
fd = xopen(vtname, O_RDWR);
/* Reassign stdin, stdout and sterr */
dup2(fd, STDIN_FILENO);
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
while (fd > 2) close(fd--);
execvp(argv[2], &argv[2]);
_exit(1);
}
return EXIT_SUCCESS;
}
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