blob: 2ea36f0397c1f3df51ff431e59675fc1d84203ba
| 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * setlogcons: Send kernel messages to the current console or to console N |
| 4 | * |
| 5 | * Copyright (C) 2006 by Jan Kiszka <jan.kiszka@web.de> |
| 6 | * |
| 7 | * Based on setlogcons (kbd-1.12) by Andries E. Brouwer |
| 8 | * |
| 9 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| 10 | */ |
| 11 | //config:config SETLOGCONS |
| 12 | //config: bool "setlogcons" |
| 13 | //config: default y |
| 14 | //config: select PLATFORM_LINUX |
| 15 | //config: help |
| 16 | //config: This program redirects the output console of kernel messages. |
| 17 | |
| 18 | //applet:IF_SETLOGCONS(APPLET(setlogcons, BB_DIR_USR_SBIN, BB_SUID_DROP)) |
| 19 | |
| 20 | //kbuild:lib-$(CONFIG_SETLOGCONS) += setlogcons.o |
| 21 | |
| 22 | //usage:#define setlogcons_trivial_usage |
| 23 | //usage: "[N]" |
| 24 | //usage:#define setlogcons_full_usage "\n\n" |
| 25 | //usage: "Redirect the kernel output to console N. Default:0 (current console)" |
| 26 | |
| 27 | #include "libbb.h" |
| 28 | |
| 29 | int setlogcons_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| 30 | int setlogcons_main(int argc UNUSED_PARAM, char **argv) |
| 31 | { |
| 32 | struct { |
| 33 | char fn; |
| 34 | char subarg; |
| 35 | } arg = { |
| 36 | 11, /* redirect kernel messages */ |
| 37 | 0 /* to specified console (current as default) */ |
| 38 | }; |
| 39 | |
| 40 | if (argv[1]) |
| 41 | arg.subarg = xatou_range(argv[1], 0, 63); |
| 42 | |
| 43 | xioctl(xopen(VC_1, O_RDONLY), TIOCLINUX, &arg); |
| 44 | |
| 45 | return EXIT_SUCCESS; |
| 46 | } |
| 47 |