2 * Copyright (c) 2017 Conrad Meyer <cem@FreeBSD.org>
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
38 uint64_t ev_part_offset
;
39 uint64_t ev_vol_length
;
40 uint32_t ev_fat_offset
;
41 uint32_t ev_fat_length
;
42 uint32_t ev_cluster_offset
;
43 uint32_t ev_cluster_count
;
44 uint32_t ev_rootdir_cluster
;
45 uint32_t ev_vol_serial
;
46 uint16_t ev_fs_revision
;
47 uint16_t ev_vol_flags
;
48 uint8_t ev_log_bytes_per_sect
;
49 uint8_t ev_log_sect_per_clust
;
52 uint8_t ev_percent_used
;
56 fstyp_exfat(FILE *fp
, char *label
, size_t size
)
60 ev
= (struct exfat_vbr
*)read_buf(fp
, 0, 512);
61 if (ev
== NULL
|| strncmp(ev
->ev_fsname
, "EXFAT ", 8) != 0)
65 * Reading the volume label requires walking the root directory to look
66 * for a special label file. Left as an exercise for the reader.