blob: b50e79573b6bc1d071a6bd1dff529dbe746ea55a
1 | /* |
2 | * Reads and displays CD-ROM volume name |
3 | * |
4 | * Several people have asked how to read CD volume names so I wrote this |
5 | * small program to do it. |
6 | * |
7 | * usage: volname [<device-file>] |
8 | * |
9 | * Copyright (C) 2000-2001 Jeff Tranter (tranter@pobox.com) |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License as published by |
13 | * the Free Software Foundation; either version 2 of the License, or |
14 | * (at your option) any later version. |
15 | * |
16 | * This program is distributed in the hope that it will be useful, |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
19 | * GNU General Public License for more details. |
20 | * |
21 | * You should have received a copy of the GNU General Public License |
22 | * along with this program; if not, write to the Free Software |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
24 | */ |
25 | |
26 | /* |
27 | * mods from distributed source (eject-2.0.13) are by |
28 | * Matthew Stoltenberg <d3matt@gmail.com> |
29 | */ |
30 | |
31 | //usage:#define volname_trivial_usage |
32 | //usage: "[DEVICE]" |
33 | //usage:#define volname_full_usage "\n\n" |
34 | //usage: "Show CD volume name of the DEVICE (default /dev/cdrom)" |
35 | |
36 | #include "libbb.h" |
37 | |
38 | int volname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
39 | int volname_main(int argc UNUSED_PARAM, char **argv) |
40 | { |
41 | int fd; |
42 | char buffer[32]; |
43 | const char *device; |
44 | |
45 | device = "/dev/cdrom"; |
46 | if (argv[1]) { |
47 | device = argv[1]; |
48 | if (argv[2]) |
49 | bb_show_usage(); |
50 | } |
51 | |
52 | fd = xopen(device, O_RDONLY); |
53 | xlseek(fd, 32808, SEEK_SET); |
54 | xread(fd, buffer, 32); |
55 | printf("%32.32s\n", buffer); |
56 | if (ENABLE_FEATURE_CLEAN_UP) { |
57 | close(fd); |
58 | } |
59 | return 0; |
60 | } |
61 |