Contents of /tags/mkinitrd-6_5_0/busybox/console-tools/deallocvt.c
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Fri Jun 3 21:22:00 2011 UTC (13 years, 3 months ago) by niro
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Fri Jun 3 21:22:00 2011 UTC (13 years, 3 months ago) by niro
File MIME type: text/plain
File size: 871 byte(s)
tagged 'mkinitrd-6_5_0'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Disallocate virtual terminal(s) |
4 | * |
5 | * Copyright (C) 2003 by Tito Ragusa <farmatito@tiscali.it> |
6 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
7 | * |
8 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
9 | */ |
10 | |
11 | /* no options, no getopt */ |
12 | |
13 | #include "libbb.h" |
14 | |
15 | /* From <linux/vt.h> */ |
16 | enum { VT_DISALLOCATE = 0x5608 }; /* free memory associated to vt */ |
17 | |
18 | int deallocvt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
19 | int deallocvt_main(int argc UNUSED_PARAM, char **argv) |
20 | { |
21 | /* num = 0 deallocate all unused consoles */ |
22 | int num = 0; |
23 | |
24 | if (argv[1]) { |
25 | if (argv[2]) |
26 | bb_show_usage(); |
27 | num = xatou_range(argv[1], 1, 63); |
28 | } |
29 | |
30 | /* double cast suppresses "cast to ptr from int of different size" */ |
31 | xioctl(get_console_fd_or_die(), VT_DISALLOCATE, (void *)(ptrdiff_t)num); |
32 | return EXIT_SUCCESS; |
33 | } |