| /* |
| * Reads and displays CD-ROM volume name |
| * |
| * Several people have asked how to read CD volume names so I wrote this |
| * small program to do it. |
| * |
| * usage: volname [<device-file>] |
| * |
| * Copyright (C) 2000-2001 Jeff Tranter (tranter@pobox.com) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* |
| * mods from distributed source (eject-2.0.13) are by |
| * Matthew Stoltenberg <d3matt@gmail.com> |
| */ |
| |
| //usage:#define volname_trivial_usage |
| //usage: "[DEVICE]" |
| //usage:#define volname_full_usage "\n\n" |
| //usage: "Show CD volume name of the DEVICE (default /dev/cdrom)" |
| |
| #include "libbb.h" |
| |
| int volname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int volname_main(int argc UNUSED_PARAM, char **argv) |
| { |
| int fd; |
| char buffer[32]; |
| const char *device; |
| |
| device = "/dev/cdrom"; |
| if (argv[1]) { |
| device = argv[1]; |
| if (argv[2]) |
| bb_show_usage(); |
| } |
| |
| fd = xopen(device, O_RDONLY); |
| xlseek(fd, 32808, SEEK_SET); |
| xread(fd, buffer, 32); |
| printf("%32.32s\n", buffer); |
| if (ENABLE_FEATURE_CLEAN_UP) { |
| close(fd); |
| } |
| return 0; |
| } |