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("$FreeBSD$");
43 #define NTFS_A_VOLUMENAME 0x60
44 #define NTFS_FILEMAGIC ((uint32_t)(0x454C4946))
45 #define NTFS_VOLUMEINO 3
54 uint8_t a_compression;
73 uint32_t fr_allocated;
78 struct ntfs_bootfile {
88 uint8_t reserver4[12];
91 uint64_t bf_mftmirrcn;
98 convert_label(const void *label /* LE */, size_t labellen, char *label_out,
101 char *label_out_orig;
105 /* dstname="" means convert to the current locale. */
106 cd = iconv_open("", NTFS_ENC);
107 if (cd == (iconv_t)-1) {
108 warn("ntfs: Could not open iconv");
112 label_out_orig = label_out;
114 rc = iconv(cd, __DECONST(char **, &label), &labellen, &label_out,
116 if (rc == (size_t)-1) {
117 warn("ntfs: iconv()");
118 *label_out_orig = '\0';
120 /* NUL-terminate result (iconv advances label_out). */
130 fstyp_ntfs(FILE *fp, char *label, size_t size)
132 struct ntfs_bootfile *bf;
133 struct ntfs_filerec *fr;
134 struct ntfs_attr *atr;
142 bf = (struct ntfs_bootfile *)read_buf(fp, 0, 512);
143 if (bf == NULL || strncmp(bf->bf_sysid, "NTFS ", 8) != 0)
148 mftrecsz = bf->bf_mftrecsz;
149 recsize = (mftrecsz > 0) ? (mftrecsz * bf->bf_bps * bf->bf_spc) : (1 << -mftrecsz);
151 voloff = bf->bf_mftcn * bf->bf_spc * bf->bf_bps +
152 recsize * NTFS_VOLUMEINO;
154 filerecp = read_buf(fp, voloff, recsize);
155 if (filerecp == NULL)
157 fr = (struct ntfs_filerec *)filerecp;
159 if (fr->fr_hdrmagic != NTFS_FILEMAGIC)
162 for (ap = filerecp + fr->fr_attroff;
163 atr = (struct ntfs_attr *)ap, (int)atr->a_type != -1;
165 if (atr->a_type != NTFS_A_VOLUMENAME)
168 convert_label(ap + atr->a_dataoff,
169 atr->a_datalen, label, size);