Annotation of /tags/mkinitrd-6_3_1/busybox/miscutils/volname.c
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Thu Aug 19 12:44:27 2010 UTC (14 years, 1 month ago) by niro
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Thu Aug 19 12:44:27 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 1533 byte(s)
tagged 'mkinitrd-6_3_1'
1 | niro | 984 | /* |
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 | #include "libbb.h" | ||
31 | |||
32 | int volname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; | ||
33 | int 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 | } |