blob: 6d1addbb523cd800c7cb0a1ac3c6e17686131aba
| 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 | //config:config VOLNAME |
| 31 | //config: bool "volname" |
| 32 | //config: default y |
| 33 | //config: help |
| 34 | //config: Prints a CD-ROM volume name. |
| 35 | |
| 36 | //applet:IF_VOLNAME(APPLET(volname, BB_DIR_USR_BIN, BB_SUID_DROP)) |
| 37 | |
| 38 | //kbuild:lib-$(CONFIG_VOLNAME) += volname.o |
| 39 | |
| 40 | //usage:#define volname_trivial_usage |
| 41 | //usage: "[DEVICE]" |
| 42 | //usage:#define volname_full_usage "\n\n" |
| 43 | //usage: "Show CD volume name of the DEVICE (default /dev/cdrom)" |
| 44 | |
| 45 | #include "libbb.h" |
| 46 | |
| 47 | int volname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| 48 | int volname_main(int argc UNUSED_PARAM, char **argv) |
| 49 | { |
| 50 | int fd; |
| 51 | char buffer[32]; |
| 52 | const char *device; |
| 53 | |
| 54 | device = "/dev/cdrom"; |
| 55 | if (argv[1]) { |
| 56 | device = argv[1]; |
| 57 | if (argv[2]) |
| 58 | bb_show_usage(); |
| 59 | } |
| 60 | |
| 61 | fd = xopen(device, O_RDONLY); |
| 62 | xlseek(fd, 32808, SEEK_SET); |
| 63 | xread(fd, buffer, 32); |
| 64 | printf("%32.32s\n", buffer); |
| 65 | if (ENABLE_FEATURE_CLEAN_UP) { |
| 66 | close(fd); |
| 67 | } |
| 68 | return 0; |
| 69 | } |
| 70 |