source: MondoRescue/branches/3.2/mindi-busybox/console-tools/setconsole.c

/* vi: set sw=4 ts=4: */
/*
 *  setconsole.c - redirect system console output
 *
 *  Copyright (C) 2004,2005  Enrik Berkhan <Enrik.Berkhan@inka.de>
 *  Copyright (C) 2008 Bernhard Reutner-Fischer
 *
 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
 */

//usage:#define setconsole_trivial_usage
//usage:       "[-r" IF_FEATURE_SETCONSOLE_LONG_OPTIONS("|--reset") "] [DEVICE]"
//usage:#define setconsole_full_usage "\n\n"
//usage:       "Redirect system console output to DEVICE (default: /dev/tty)\n"
//usage:     "\n    -r  Reset output to /dev/console"

#include "libbb.h"

int setconsole_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int setconsole_main(int argc UNUSED_PARAM, char **argv)
{
    const char *device = CURRENT_TTY;
    bool reset;

#if ENABLE_FEATURE_SETCONSOLE_LONG_OPTIONS
    static const char setconsole_longopts[] ALIGN1 =
        "reset\0" No_argument "r"
        ;
    applet_long_options = setconsole_longopts;
#endif
    /* at most one non-option argument */
    opt_complementary = "?1";
    reset = getopt32(argv, "r");

    argv += 1 + reset;
    if (*argv) {
        device = *argv;
    } else {
        if (reset)
            device = DEV_CONSOLE;
    }

    xioctl(xopen(device, O_WRONLY), TIOCCONS, NULL);
    return EXIT_SUCCESS;
}