1 /* vi: set sw=4 ts=4: */
3 * setconsole.c - redirect system console output
5 * Copyright (C) 2004,2005 Enrik Berkhan <Enrik.Berkhan@inka.de>
6 * Copyright (C) 2008 Bernhard Reutner-Fischer
8 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
10 //config:config SETCONSOLE
11 //config: bool "setconsole"
13 //config: select PLATFORM_LINUX
15 //config: This program redirects the system console to another device,
16 //config: like the current tty while logged in via telnet.
18 //config:config FEATURE_SETCONSOLE_LONG_OPTIONS
19 //config: bool "Enable long options"
21 //config: depends on SETCONSOLE && LONG_OPTS
23 //applet:IF_SETCONSOLE(APPLET(setconsole, BB_DIR_SBIN, BB_SUID_DROP))
25 //kbuild:lib-$(CONFIG_SETCONSOLE) += setconsole.o
27 //usage:#define setconsole_trivial_usage
28 //usage: "[-r" IF_FEATURE_SETCONSOLE_LONG_OPTIONS("|--reset") "] [DEVICE]"
29 //usage:#define setconsole_full_usage "\n\n"
30 //usage: "Redirect system console output to DEVICE (default: /dev/tty)\n"
31 //usage: "\n -r Reset output to /dev/console"
35 int setconsole_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
36 int setconsole_main(int argc UNUSED_PARAM, char **argv)
38 const char *device = CURRENT_TTY;
41 #if ENABLE_FEATURE_SETCONSOLE_LONG_OPTIONS
42 static const char setconsole_longopts[] ALIGN1 =
43 "reset\0" No_argument "r"
45 applet_long_options = setconsole_longopts;
47 /* at most one non-option argument */
48 opt_complementary = "?1";
49 reset = getopt32(argv, "r");
59 xioctl(xopen(device, O_WRONLY), TIOCCONS, NULL);