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