70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
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* Reads and displays CD-ROM volume name
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*
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* Several people have asked how to read CD volume names so I wrote this
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* small program to do it.
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*
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* usage: volname [<device-file>]
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*
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* Copyright (C) 2000-2001 Jeff Tranter (tranter@pobox.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* mods from distributed source (eject-2.0.13) are by
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* Matthew Stoltenberg <d3matt@gmail.com>
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*/
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//config:config VOLNAME
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//config: bool "volname (1.6 kb)"
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//config: default y
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//config: help
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//config: Prints a CD-ROM volume name.
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//applet:IF_VOLNAME(APPLET(volname, BB_DIR_USR_BIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_VOLNAME) += volname.o
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//usage:#define volname_trivial_usage
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//usage: "[DEVICE]"
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//usage:#define volname_full_usage "\n\n"
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//usage: "Show CD volume name of the DEVICE (default /dev/cdrom)"
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#include "libbb.h"
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int volname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int volname_main(int argc UNUSED_PARAM, char **argv)
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{
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int fd;
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char buffer[32];
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const char *device;
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device = "/dev/cdrom";
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if (argv[1]) {
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device = argv[1];
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if (argv[2])
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bb_show_usage();
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}
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fd = xopen(device, O_RDONLY);
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xlseek(fd, 32808, SEEK_SET);
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xread(fd, buffer, 32);
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printf("%32.32s\n", buffer);
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if (ENABLE_FEATURE_CLEAN_UP) {
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close(fd);
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}
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return 0;
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}
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