release/src/router/busybox/console-tools/setconsole.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  *  setconsole.c - redirect system console output
   4  *
   5  *  Copyright (C) 2004,2005  Enrik Berkhan <Enrik.Berkhan@inka.de>
   6  *  Copyright (C) 2008 Bernhard Reutner-Fischer
   7  *
   8  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
   9  */
  10
  11 #include "libbb.h"
  12
  13 int setconsole_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  14 int setconsole_main(int argc UNUSED_PARAM, char **argv)
  15 {
  16         const char *device = CURRENT_TTY;
  17         bool reset;
  18
  19 #if ENABLE_FEATURE_SETCONSOLE_LONG_OPTIONS
  20         static const char setconsole_longopts[] ALIGN1 =
  21                 "reset\0" No_argument "r"
  22                 ;
  23         applet_long_options = setconsole_longopts;
  24 #endif
  25         /* at most one non-option argument */
  26         opt_complementary = "?1";
  27         reset = getopt32(argv, "r");
  28
  29         argv += 1 + reset;
  30         if (*argv) {
  31                 device = *argv;
  32         } else {
  33                 if (reset)
  34                         device = DEV_CONSOLE;
  35         }
  36
  37         xioctl(xopen(device, O_RDONLY), TIOCCONS, NULL);
  38         return EXIT_SUCCESS;
  39 }