2 * Copyright (c) 2005 Takanori Watanabe
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/malloc.h>
35 #include <geom/geom.h>
36 #include <geom/label/g_label.h>
38 #define NTFS_A_VOLUMENAME 0x60
39 #define NTFS_FILEMAGIC ((uint32_t)(0x454C4946))
40 #define NTFS_VOLUMEINO 3
42 #define G_LABEL_NTFS_DIR "ntfs"
51 uint8_t a_compression;
70 uint32_t fr_allocated;
75 struct ntfs_bootfile {
85 uint8_t reserver4[12];
88 uint64_t bf_mftmirrcn;
95 g_label_ntfs_taste(struct g_consumer *cp, char *label, size_t size)
97 struct g_provider *pp;
98 struct ntfs_bootfile *bf;
99 struct ntfs_filerec *fr;
100 struct ntfs_attr *atr;
103 char mftrecsz, vnchar;
106 g_topology_assert_not();
112 bf = (struct ntfs_bootfile *)g_read_data(cp, 0, pp->sectorsize, NULL);
113 if (bf == NULL || strncmp(bf->bf_sysid, "NTFS ", 8) != 0)
116 mftrecsz = (char)bf->bf_mftrecsz;
117 recsize = (mftrecsz > 0) ? (mftrecsz * bf->bf_bps * bf->bf_spc) : (1 << -mftrecsz);
118 if (recsize == 0 || recsize % pp->sectorsize != 0)
121 voloff = bf->bf_mftcn * bf->bf_spc * bf->bf_bps +
122 recsize * NTFS_VOLUMEINO;
123 if (voloff % pp->sectorsize != 0)
126 filerecp = g_read_data(cp, voloff, recsize, NULL);
127 if (filerecp == NULL)
129 fr = (struct ntfs_filerec *)filerecp;
131 if (fr->fr_hdrmagic != NTFS_FILEMAGIC)
134 for (ap = filerecp + fr->fr_attroff;
135 atr = (struct ntfs_attr *)ap, atr->a_type != -1;
137 if (atr->a_type == NTFS_A_VOLUMENAME) {
138 if(atr->a_datalen >= size *2){
144 * Should we need to use iconv(9)?
146 for (j = 0; j < atr->a_datalen; j++) {
147 vnchar = *(ap + atr->a_dataoff + j);
154 label[j / 2] = vnchar;
164 if (filerecp != NULL)
168 struct g_label_desc g_label_ntfs = {
169 .ld_taste = g_label_ntfs_taste,
170 .ld_dir = G_LABEL_NTFS_DIR,
174 G_LABEL_INIT(ntfs, g_label_ntfs, "Create device nodes for NTFS volumes");