1*86d7f5d3SJohn Marino /*
2*86d7f5d3SJohn Marino * Copyright (c) 2010 The DragonFly Project. All rights reserved.
3*86d7f5d3SJohn Marino *
4*86d7f5d3SJohn Marino * This code is derived from software contributed to The DragonFly Project
5*86d7f5d3SJohn Marino * by Ákos Kovács <akoskovacs@gmx.com>
6*86d7f5d3SJohn Marino *
7*86d7f5d3SJohn Marino * Redistribution and use in source and binary forms, with or without
8*86d7f5d3SJohn Marino * modification, are permitted provided that the following conditions
9*86d7f5d3SJohn Marino * are met:
10*86d7f5d3SJohn Marino *
11*86d7f5d3SJohn Marino * 1. Redistributions of source code must retain the above copyright
12*86d7f5d3SJohn Marino * notice, this list of conditions and the following disclaimer.
13*86d7f5d3SJohn Marino * 2. Redistributions in binary form must reproduce the above copyright
14*86d7f5d3SJohn Marino * notice, this list of conditions and the following disclaimer in
15*86d7f5d3SJohn Marino * the documentation and/or other materials provided with the
16*86d7f5d3SJohn Marino * distribution.
17*86d7f5d3SJohn Marino * 3. Neither the name of The DragonFly Project nor the names of its
18*86d7f5d3SJohn Marino * contributors may be used to endorse or promote products derived
19*86d7f5d3SJohn Marino * from this software without specific, prior written permission.
20*86d7f5d3SJohn Marino *
21*86d7f5d3SJohn Marino * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22*86d7f5d3SJohn Marino * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23*86d7f5d3SJohn Marino * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24*86d7f5d3SJohn Marino * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25*86d7f5d3SJohn Marino * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26*86d7f5d3SJohn Marino * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27*86d7f5d3SJohn Marino * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28*86d7f5d3SJohn Marino * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29*86d7f5d3SJohn Marino * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30*86d7f5d3SJohn Marino * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31*86d7f5d3SJohn Marino * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32*86d7f5d3SJohn Marino * SUCH DAMAGE.
33*86d7f5d3SJohn Marino */
34*86d7f5d3SJohn Marino
35*86d7f5d3SJohn Marino #include "libfsid.h"
36*86d7f5d3SJohn Marino
37*86d7f5d3SJohn Marino #include <vfs/isofs/cd9660/iso.h>
38*86d7f5d3SJohn Marino
39*86d7f5d3SJohn Marino static char buffer[ISO_DEFAULT_BLOCK_SIZE];
40*86d7f5d3SJohn Marino
41*86d7f5d3SJohn Marino fsid_t
cd9660_probe(const char * dev)42*86d7f5d3SJohn Marino cd9660_probe(const char *dev)
43*86d7f5d3SJohn Marino {
44*86d7f5d3SJohn Marino struct iso_primary_descriptor *pdsc;
45*86d7f5d3SJohn Marino
46*86d7f5d3SJohn Marino if (fsid_dev_read(dev, 32768L, sizeof(buffer), buffer) != 0)
47*86d7f5d3SJohn Marino return FSID_UNKNOWN;
48*86d7f5d3SJohn Marino
49*86d7f5d3SJohn Marino pdsc = (struct iso_primary_descriptor *)&buffer;
50*86d7f5d3SJohn Marino
51*86d7f5d3SJohn Marino if ((strncmp(pdsc->id, ISO_STANDARD_ID, 4)) == 0)
52*86d7f5d3SJohn Marino return FSID_CD9660;
53*86d7f5d3SJohn Marino
54*86d7f5d3SJohn Marino return FSID_UNKNOWN;
55*86d7f5d3SJohn Marino }
56*86d7f5d3SJohn Marino
57*86d7f5d3SJohn Marino char *
cd9660_volname(const char * dev)58*86d7f5d3SJohn Marino cd9660_volname(const char *dev)
59*86d7f5d3SJohn Marino {
60*86d7f5d3SJohn Marino static struct iso_primary_descriptor *pdsc;
61*86d7f5d3SJohn Marino
62*86d7f5d3SJohn Marino if (fsid_dev_read(dev, 32768L, sizeof(buffer), buffer) != 0)
63*86d7f5d3SJohn Marino return NULL;
64*86d7f5d3SJohn Marino
65*86d7f5d3SJohn Marino pdsc = (struct iso_primary_descriptor *)&buffer;
66*86d7f5d3SJohn Marino
67*86d7f5d3SJohn Marino if (strncmp(pdsc->id, ISO_STANDARD_ID, 4) != 0 ||
68*86d7f5d3SJohn Marino pdsc->volume_id[0] == '\0')
69*86d7f5d3SJohn Marino return NULL;
70*86d7f5d3SJohn Marino
71*86d7f5d3SJohn Marino pdsc->volume_id[sizeof(pdsc->volume_id) - 1] = '\0';
72*86d7f5d3SJohn Marino
73*86d7f5d3SJohn Marino return pdsc->volume_id;
74*86d7f5d3SJohn Marino }
75