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authorbigbiff bigbiff <bigbiff@teamw.in>2013-01-09 15:09:08 +0100
committerbigbiff bigbiff <bigbiff@teamw.in>2013-01-09 15:09:08 +0100
commit9c754053b07a724bdd98d039f34899d6a49115b7 (patch)
tree464885db361a12d83d60cf152142c765562bb92d /exfat/libexfat/exfatfs.h
parentAdd Samsung TouchWiz decryption (diff)
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diff --git a/exfat/libexfat/exfatfs.h b/exfat/libexfat/exfatfs.h
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+/*
+ exfatfs.h (29.08.09)
+ Definitions of structures and constants used in exFAT file system.
+
+ Copyright (C) 2010-2012 Andrew Nayenko
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef EXFATFS_H_INCLUDED
+#define EXFATFS_H_INCLUDED
+
+#include "byteorder.h"
+
+typedef uint32_t cluster_t; /* cluster number */
+
+#define EXFAT_FIRST_DATA_CLUSTER 2
+#define EXFAT_LAST_DATA_CLUSTER 0xfffffff6
+
+#define EXFAT_CLUSTER_FREE 0 /* free cluster */
+#define EXFAT_CLUSTER_BAD 0xfffffff7 /* cluster contains bad sector */
+#define EXFAT_CLUSTER_END 0xffffffff /* final cluster of file or directory */
+
+#define EXFAT_STATE_MOUNTED 2
+
+struct exfat_super_block
+{
+ uint8_t jump[3]; /* 0x00 jmp and nop instructions */
+ uint8_t oem_name[8]; /* 0x03 "EXFAT " */
+ uint8_t __unused1[53]; /* 0x0B always 0 */
+ le64_t sector_start; /* 0x40 partition first sector */
+ le64_t sector_count; /* 0x48 partition sectors count */
+ le32_t fat_sector_start; /* 0x50 FAT first sector */
+ le32_t fat_sector_count; /* 0x54 FAT sectors count */
+ le32_t cluster_sector_start; /* 0x58 first cluster sector */
+ le32_t cluster_count; /* 0x5C total clusters count */
+ le32_t rootdir_cluster; /* 0x60 first cluster of the root dir */
+ le32_t volume_serial; /* 0x64 volume serial number */
+ struct /* 0x68 FS version */
+ {
+ uint8_t minor;
+ uint8_t major;
+ }
+ version;
+ le16_t volume_state; /* 0x6A volume state flags */
+ uint8_t sector_bits; /* 0x6C sector size as (1 << n) */
+ uint8_t spc_bits; /* 0x6D sectors per cluster as (1 << n) */
+ uint8_t fat_count; /* 0x6E always 1 */
+ uint8_t drive_no; /* 0x6F always 0x80 */
+ uint8_t allocated_percent; /* 0x70 percentage of allocated space */
+ uint8_t __unused2[397]; /* 0x71 always 0 */
+ le16_t boot_signature; /* the value of 0xAA55 */
+}
+__attribute__((__packed__));
+
+#define EXFAT_ENTRY_VALID 0x80
+#define EXFAT_ENTRY_CONTINUED 0x40
+
+#define EXFAT_ENTRY_BITMAP (0x01 | EXFAT_ENTRY_VALID)
+#define EXFAT_ENTRY_UPCASE (0x02 | EXFAT_ENTRY_VALID)
+#define EXFAT_ENTRY_LABEL (0x03 | EXFAT_ENTRY_VALID)
+#define EXFAT_ENTRY_FILE (0x05 | EXFAT_ENTRY_VALID)
+#define EXFAT_ENTRY_FILE_INFO (0x00 | EXFAT_ENTRY_VALID | EXFAT_ENTRY_CONTINUED)
+#define EXFAT_ENTRY_FILE_NAME (0x01 | EXFAT_ENTRY_VALID | EXFAT_ENTRY_CONTINUED)
+
+struct exfat_entry /* common container for all entries */
+{
+ uint8_t type; /* any of EXFAT_ENTRY_xxx */
+ uint8_t data[31];
+}
+__attribute__((__packed__));
+
+#define EXFAT_ENAME_MAX 15
+
+struct exfat_entry_bitmap /* allocated clusters bitmap */
+{
+ uint8_t type; /* EXFAT_ENTRY_BITMAP */
+ uint8_t __unknown1[19];
+ le32_t start_cluster;
+ le64_t size; /* in bytes */
+}
+__attribute__((__packed__));
+
+struct exfat_entry_upcase /* upper case translation table */
+{
+ uint8_t type; /* EXFAT_ENTRY_UPCASE */
+ uint8_t __unknown1[3];
+ le32_t checksum;
+ uint8_t __unknown2[12];
+ le32_t start_cluster;
+ le64_t size; /* in bytes */
+}
+__attribute__((__packed__));
+
+struct exfat_entry_label /* volume label */
+{
+ uint8_t type; /* EXFAT_ENTRY_LABEL */
+ uint8_t length; /* number of characters */
+ le16_t name[EXFAT_ENAME_MAX]; /* in UTF-16LE */
+}
+__attribute__((__packed__));
+
+#define EXFAT_ATTRIB_RO 0x01
+#define EXFAT_ATTRIB_HIDDEN 0x02
+#define EXFAT_ATTRIB_SYSTEM 0x04
+#define EXFAT_ATTRIB_VOLUME 0x08
+#define EXFAT_ATTRIB_DIR 0x10
+#define EXFAT_ATTRIB_ARCH 0x20
+
+struct exfat_entry_meta1 /* file or directory info (part 1) */
+{
+ uint8_t type; /* EXFAT_ENTRY_FILE */
+ uint8_t continuations;
+ le16_t checksum;
+ le16_t attrib; /* combination of EXFAT_ATTRIB_xxx */
+ le16_t __unknown1;
+ le16_t crtime, crdate; /* creation date and time */
+ le16_t mtime, mdate; /* latest modification date and time */
+ le16_t atime, adate; /* latest access date and time */
+ uint8_t crtime_cs; /* creation time in cs (centiseconds) */
+ uint8_t mtime_cs; /* latest modification time in cs */
+ uint8_t __unknown2[10];
+}
+__attribute__((__packed__));
+
+#define EXFAT_FLAG_ALWAYS1 (1u << 0)
+#define EXFAT_FLAG_CONTIGUOUS (1u << 1)
+
+struct exfat_entry_meta2 /* file or directory info (part 2) */
+{
+ uint8_t type; /* EXFAT_ENTRY_FILE_INFO */
+ uint8_t flags; /* combination of EXFAT_FLAG_xxx */
+ uint8_t __unknown1;
+ uint8_t name_length;
+ le16_t name_hash;
+ le16_t __unknown2;
+ le64_t real_size; /* in bytes, equals to size */
+ uint8_t __unknown3[4];
+ le32_t start_cluster;
+ le64_t size; /* in bytes, equals to real_size */
+}
+__attribute__((__packed__));
+
+struct exfat_entry_name /* file or directory name */
+{
+ uint8_t type; /* EXFAT_ENTRY_FILE_NAME */
+ uint8_t __unknown;
+ le16_t name[EXFAT_ENAME_MAX]; /* in UTF-16LE */
+}
+__attribute__((__packed__));
+
+#endif /* ifndef EXFATFS_H_INCLUDED */