2 * Copyright (c) 2005 Takanori Watanabe
3 * Copyright (c) 2014 The FreeBSD Foundation
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
41 #define NTFS_A_VOLUMENAME 0x60
42 #define NTFS_FILEMAGIC ((uint32_t)(0x454C4946))
43 #define NTFS_VOLUMEINO 3
52 uint8_t a_compression;
71 uint32_t fr_allocated;
76 struct ntfs_bootfile {
86 uint8_t reserver4[12];
89 uint64_t bf_mftmirrcn;
96 fstyp_ntfs(FILE *fp, char *label, size_t size)
98 struct ntfs_bootfile *bf;
99 struct ntfs_filerec *fr;
100 struct ntfs_attr *atr;
109 bf = (struct ntfs_bootfile *)read_buf(fp, 0, 512);
110 if (bf == NULL || strncmp(bf->bf_sysid, "NTFS ", 8) != 0)
113 mftrecsz = bf->bf_mftrecsz;
114 recsize = (mftrecsz > 0) ? (mftrecsz * bf->bf_bps * bf->bf_spc) : (1 << -mftrecsz);
116 voloff = bf->bf_mftcn * bf->bf_spc * bf->bf_bps +
117 recsize * NTFS_VOLUMEINO;
119 filerecp = read_buf(fp, voloff, recsize);
120 if (filerecp == NULL)
122 fr = (struct ntfs_filerec *)filerecp;
124 if (fr->fr_hdrmagic != NTFS_FILEMAGIC)
127 for (ap = filerecp + fr->fr_attroff;
128 atr = (struct ntfs_attr *)ap, (int)atr->a_type != -1;
130 if (atr->a_type == NTFS_A_VOLUMENAME) {
131 if(atr->a_datalen >= size *2){
136 * Should we need to use iconv(9)?
138 for (j = 0; j < atr->a_datalen; j++) {
139 vnchar = *(ap + atr->a_dataoff + j);
145 label[j / 2] = vnchar;