blob: c76a5a42b164d7567309bec13ec75cd3dc199530
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 | |
12 | //usage:#define setlogcons_trivial_usage |
13 | //usage: "N" |
14 | //usage:#define setlogcons_full_usage "\n\n" |
15 | //usage: "Redirect the kernel output to console N (0 for current)" |
16 | |
17 | #include "libbb.h" |
18 | |
19 | int setlogcons_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
20 | int setlogcons_main(int argc UNUSED_PARAM, char **argv) |
21 | { |
22 | struct { |
23 | char fn; |
24 | char subarg; |
25 | } arg = { |
26 | 11, /* redirect kernel messages */ |
27 | 0 /* to specified console (current as default) */ |
28 | }; |
29 | |
30 | if (argv[1]) |
31 | arg.subarg = xatou_range(argv[1], 0, 63); |
32 | |
33 | xioctl(xopen(VC_1, O_RDONLY), TIOCLINUX, &arg); |
34 | |
35 | return EXIT_SUCCESS; |
36 | } |
37 |