blob: 6e86156174b0cc98a43b1284aee1bb75f35a13fb [file] [log] [blame]
Matthew Stoltenberg4803db52009-08-13 00:59:32 +02001/*
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/*
Denys Vlasenko007c6fc2009-08-14 01:36:28 +020027 * mods from distributed source (eject-2.0.13) are by
Matthew Stoltenberg4803db52009-08-13 00:59:32 +020028 * Matthew Stoltenberg <d3matt@gmail.com>
29 */
30#include "libbb.h"
31
32int volname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
33int volname_main(int argc UNUSED_PARAM, char **argv)
34{
35 int fd;
36 char buffer[32];
37 const char *device;
38
39 device = "/dev/cdrom";
40 if (argv[1]) {
41 device = argv[1];
42 if (argv[2])
43 bb_show_usage();
44 }
45
46 fd = xopen(device, O_RDONLY);
47 xlseek(fd, 32808, SEEK_SET);
48 xread(fd, buffer, 32);
49 printf("%32.32s\n", buffer);
50 if (ENABLE_FEATURE_CLEAN_UP) {
51 close(fd);
52 }
53 return 0;
54}