busybox/console-tools/setconsole.c
Denys Vlasenko f560422fa0 Big cleanup in config help and description
Redundant help texts (one which only repeats the description)
are deleted.

Descriptions and help texts are trimmed.

Some config options are moved, even across menus.

No config option _names_ are changed.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-10 14:58:54 +01:00

62 lines
1.7 KiB
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.
*/
//config:config SETCONSOLE
//config: bool "setconsole"
//config: default y
//config: select PLATFORM_LINUX
//config: help
//config: This program redirects the system console to another device,
//config: like the current tty while logged in via telnet.
//config:
//config:config FEATURE_SETCONSOLE_LONG_OPTIONS
//config: bool "Enable long options"
//config: default y
//config: depends on SETCONSOLE && LONG_OPTS
//applet:IF_SETCONSOLE(APPLET(setconsole, BB_DIR_SBIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_SETCONSOLE) += setconsole.o
//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;
}