/* vi: set sw=4 ts=4: */
-
/*
- * openvt.c - open a vt to run a command.
+ * openvt.c - open a vt to run a command.
+ *
+ * busyboxed by Quy Tonthat <quy@signal3.com>
+ * hacked by Tito <farmatito@tiscali.it>
*
- * busyboxed by Quy Tonthat <quy@signal3.com>
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* getopt not needed */
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/types.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];
- char * cmd = NULL;
- char * cmd_args = NULL;
-
- if (argc < 3)
- show_usage();
-
- if (!isdigit(argv[1][0]))
- show_usage();
-
- vtno = (int) atol(argv[1]);
+ char vtname[sizeof(VC_FORMAT) + 2];
- /* if (vtno <= 0 || vtno > 63) */
- if (vtno <= 0 || vtno > 12)
- error_msg_and_die("Illegal vt number (%d)", vtno);
- sprintf(vtname, VTNAME, vtno);
-
- cmd = argv[2];
- cmd_args = xmalloc(80);
- cmd_args[0] = '\0';
+ 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((pid = fork()) == 0) {
+ if (fork() == 0) {
/* leave current vt */
-
-#ifdef ESIX_5_3_2_D
- if (setpgrp() < 0) {
-#else
if (setsid() < 0) {
-#endif
-
- perror_msg_and_die("Unable to set new session");
+ bb_perror_msg_and_die("setsid");
}
close(0); /* so that new vt becomes stdin */
/* and grab new one */
- if ((fd = open(vtname, O_RDWR)) == -1)
- perror_msg_and_die("could not open %s", vtname);
+ fd = xopen(vtname, O_RDWR);
/* Reassign stdout and sterr */
- close(1);
- close(2);
- dup(fd);
- dup(fd);
+ dup2(fd, STDOUT_FILENO);
+ dup2(fd, STDERR_FILENO);
- execvp(cmd, &argv[2]);
- /*execlp(cmd, cmd_args);*/
+ execvp(argv[2], &argv[2]);
_exit(1);
}
return EXIT_SUCCESS;
}
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/