getopt_ulflags -> getopt32.

[oweals/busybox.git] / console-tools / openvt.c

diff --git a/console-tools/openvt.c b/console-tools/openvt.c
index 269dfc01a48997c37b8aba2ad3e07ebb74d00ae5..0c0cef23ca435d2a3cf12dca908fcc83126a1669 100644 (file)
--- a/console-tools/openvt.c
+++ b/console-tools/openvt.c
@@ -5,19 +5,7 @@
  *  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.
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
 /* getopt not needed */
@@ -32,66 +20,34 @@
 
 #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]);
+       char vtname[sizeof(VC_FORMAT) + 2];
 
-       /* 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 (argc < 3) {
+               bb_show_usage();
+       }
+       /* check for Illegal vt number: < 1 or > 12 */
+       sprintf(vtname, VC_FORMAT, (int)bb_xgetlarg(argv[1], 10, 1, 12));
 
-       if((pid = fork()) == 0) {
+       if (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");       
+                       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)
-                       bb_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(argv[0], argv);
+               execvp(argv[2], &argv[2]);
                _exit(1);
        }
        return EXIT_SUCCESS;
 }
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/