--- /dev/null
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ *
+ * 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 2
+ * 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 _SDFAT_FS_H
+#define _SDFAT_FS_H
+
+#include <linux/types.h>
+#include <linux/magic.h>
+#include <asm/byteorder.h>
+
+/*----------------------------------------------------------------------*/
+/* Constant & Macro Definitions */
+/*----------------------------------------------------------------------*/
+#ifndef MSDOS_SUPER_MAGIC
+#define MSDOS_SUPER_MAGIC 0x4d44 /* MD */
+#endif
+
+#ifndef EXFAT_SUPER_MAGIC
+#define EXFAT_SUPER_MAGIC (0x2011BAB0UL)
+#endif /* EXFAT_SUPER_MAGIC */
+
+#ifndef SDFAT_SUPER_MAGIC
+#define SDFAT_SUPER_MAGIC (0x5EC5DFA4UL)
+#endif /* SDFAT_SUPER_MAGIC */
+
+#define SDFAT_ROOT_INO 1
+
+/* FAT types */
+#define FAT12 0x01 // FAT12
+#define FAT16 0x0E // Win95 FAT16 (LBA)
+#define FAT32 0x0C // Win95 FAT32 (LBA)
+#define EXFAT 0x07 // exFAT
+
+/* directory file name */
+#define DOS_CUR_DIR_NAME ". "
+#define DOS_PAR_DIR_NAME ".. "
+
+#ifdef __LITTLE_ENDIAN
+#define UNI_CUR_DIR_NAME ".\0"
+#define UNI_PAR_DIR_NAME ".\0.\0"
+#else
+#define UNI_CUR_DIR_NAME "\0."
+#define UNI_PAR_DIR_NAME "\0.\0."
+#endif
+
+/* file name lengths */
+/* NOTE :
+ * The maximum length of input or output is limited to 256 including NULL,
+ * But we allocate 4 extra bytes for utf8 translation reside in last position,
+ * because utf8 can uses memory upto 6 bytes per one character.
+ * Therefore, MAX_CHARSET_SIZE supports upto 6 bytes for utf8
+ */
+#define MAX_UNINAME_BUF_SIZE (((MAX_NAME_LENGTH+1)*2)+4)
+#define MAX_DOSNAME_BUF_SIZE ((DOS_NAME_LENGTH+2)+6)
+#define MAX_VFSNAME_BUF_SIZE ((MAX_NAME_LENGTH+1)*MAX_CHARSET_SIZE)
+#define MAX_CHARSET_SIZE 6 // max size of multi-byte character
+#define MAX_NAME_LENGTH 255 // max len of file name excluding NULL
+#define DOS_NAME_LENGTH 11 // DOS file name length excluding NULL
+
+#define SECTOR_SIZE_BITS 9 /* VFS sector size is 512 bytes */
+
+#define DENTRY_SIZE 32 /* directory entry size */
+#define DENTRY_SIZE_BITS 5
+
+#define MAX_FAT_DENTRIES 65536 /* FAT allows 65536 directory entries */
+#define MAX_EXFAT_DENTRIES 8388608 /* exFAT allows 8388608(256MB) directory entries */
+
+/* PBR entries */
+#define PBR_SIGNATURE 0xAA55
+#define EXT_SIGNATURE 0xAA550000
+#define VOL_LABEL "NO NAME " /* size should be 11 */
+#define OEM_NAME "MSWIN4.1" /* size should be 8 */
+#define STR_FAT12 "FAT12 " /* size should be 8 */
+#define STR_FAT16 "FAT16 " /* size should be 8 */
+#define STR_FAT32 "FAT32 " /* size should be 8 */
+#define STR_EXFAT "EXFAT " /* size should be 8 */
+
+#define VOL_CLEAN 0x0000
+#define VOL_DIRTY 0x0002
+
+#define FAT_VOL_DIRTY 0x01
+
+/* max number of clusters */
+#define FAT12_THRESHOLD 4087 // 2^12 - 1 + 2 (clu 0 & 1)
+#define FAT16_THRESHOLD 65527 // 2^16 - 1 + 2
+#define FAT32_THRESHOLD 268435457 // 2^28 - 1 + 2
+#define EXFAT_THRESHOLD 268435457 // 2^28 - 1 + 2
+
+/* dentry types */
+#define MSDOS_DELETED 0xE5 /* deleted mark */
+#define MSDOS_UNUSED 0x00 /* end of directory */
+
+#define EXFAT_UNUSED 0x00 /* end of directory */
+#define IS_EXFAT_DELETED(x) ((x) < 0x80) /* deleted file (0x01~0x7F) */
+#define EXFAT_INVAL 0x80 /* invalid value */
+#define EXFAT_BITMAP 0x81 /* allocation bitmap */
+#define EXFAT_UPCASE 0x82 /* upcase table */
+#define EXFAT_VOLUME 0x83 /* volume label */
+#define EXFAT_FILE 0x85 /* file or dir */
+#define EXFAT_STREAM 0xC0 /* stream entry */
+#define EXFAT_NAME 0xC1 /* file name entry */
+#define EXFAT_ACL 0xC2 /* stream entry */
+
+/* specific flag */
+#define MSDOS_LAST_LFN 0x40
+
+/* file attributes */
+#define ATTR_NORMAL 0x0000
+#define ATTR_READONLY 0x0001
+#define ATTR_HIDDEN 0x0002
+#define ATTR_SYSTEM 0x0004
+#define ATTR_VOLUME 0x0008
+#define ATTR_SUBDIR 0x0010
+#define ATTR_ARCHIVE 0x0020
+#define ATTR_SYMLINK 0x0040
+#define ATTR_EXTEND (ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | \
+ ATTR_VOLUME) /* 0x000F */
+
+#define ATTR_EXTEND_MASK (ATTR_EXTEND | ATTR_SUBDIR | ATTR_ARCHIVE)
+#define ATTR_RWMASK (ATTR_HIDDEN | ATTR_SYSTEM | ATTR_VOLUME | \
+ ATTR_SUBDIR | ATTR_ARCHIVE | ATTR_SYMLINK)/* 0x007E */
+
+/* file creation modes */
+#define FM_REGULAR 0x00
+#define FM_SYMLINK 0x40
+
+/* time modes */
+#define TM_CREATE 0
+#define TM_MODIFY 1
+#define TM_ACCESS 2
+
+/* checksum types */
+#define CS_DIR_ENTRY 0
+#define CS_PBR_SECTOR 1
+#define CS_DEFAULT 2
+
+/* time min/max */
+/* Jan 1 GMT 00:00:00 1980 */
+#define SDFAT_MIN_TIMESTAMP_SECS 315532800LL
+/* Dec 31 GMT 23:59:59 2107 */
+#define SDFAT_MAX_TIMESTAMP_SECS 4354819199LL
+
+
+/*
+ * ioctl command
+ */
+#define SDFAT_IOCTL_GET_VOLUME_ID _IOR('r', 0x12, __u32)
+#define SDFAT_IOCTL_DFR_INFO _IOC(_IOC_NONE, 'E', 0x13, sizeof(u32))
+#define SDFAT_IOCTL_DFR_TRAV _IOC(_IOC_NONE, 'E', 0x14, sizeof(u32))
+#define SDFAT_IOCTL_DFR_REQ _IOC(_IOC_NONE, 'E', 0x15, sizeof(u32))
+#define SDFAT_IOCTL_DFR_SPO_FLAG _IOC(_IOC_NONE, 'E', 0x16, sizeof(u32))
+#define SDFAT_IOCTL_PANIC _IOC(_IOC_NONE, 'E', 0x17, sizeof(u32))
+
+/*
+ * ioctl command for debugging
+ */
+
+/*
+ * IOCTL code 'f' used by
+ * - file systems typically #0~0x1F
+ * - embedded terminal devices #128~
+ * - exts for debugging purpose #99
+ * number 100 and 101 is available now but has possible conflicts
+ *
+ * NOTE : This is available only If CONFIG_SDFAT_DVBG_IOCTL is enabled.
+ *
+ */
+#define SDFAT_IOC_GET_DEBUGFLAGS _IOR('f', 100, long)
+#define SDFAT_IOC_SET_DEBUGFLAGS _IOW('f', 101, long)
+
+#define SDFAT_DEBUGFLAGS_INVALID_UMOUNT 0x01
+#define SDFAT_DEBUGFLAGS_ERROR_RW 0x02
+
+/*----------------------------------------------------------------------*/
+/* On-Disk Type Definitions */
+/*----------------------------------------------------------------------*/
+
+/* FAT12/16/32 BIOS parameter block (64 bytes) */
+typedef struct {
+ __u8 jmp_boot[3];
+ __u8 oem_name[8];
+
+ __u8 sect_size[2]; /* unaligned */
+ __u8 sect_per_clus;
+ __le16 num_reserved; /* . */
+ __u8 num_fats;
+ __u8 num_root_entries[2]; /* unaligned */
+ __u8 num_sectors[2]; /* unaligned */
+ __u8 media_type;
+ __le16 num_fat_sectors;
+ __le16 sectors_in_track;
+ __le16 num_heads;
+ __le32 num_hid_sectors; /* . */
+ __le32 num_huge_sectors;
+
+ union {
+ struct {
+ __u8 phy_drv_no;
+ __u8 state; /* used by WinNT for mount state */
+ __u8 ext_signature;
+ __u8 vol_serial[4];
+ __u8 vol_label[11];
+ __u8 vol_type[8];
+ __le16 nouse;
+ } f16;
+
+ struct {
+ __le32 num_fat32_sectors;
+ __le16 ext_flags;
+ __u8 fs_version[2];
+ __le32 root_cluster; /* . */
+ __le16 fsinfo_sector;
+ __le16 backup_sector;
+ __le16 reserved[6]; /* . */
+ } f32;
+ };
+} bpb_t;
+
+/* FAT32 EXTEND BIOS parameter block (32 bytes) */
+typedef struct {
+ __u8 phy_drv_no;
+ __u8 state; /* used by WindowsNT for mount state */
+ __u8 ext_signature;
+ __u8 vol_serial[4];
+ __u8 vol_label[11];
+ __u8 vol_type[8];
+ __le16 dummy[3];
+} bsx32_t;
+
+/* EXFAT BIOS parameter block (64 bytes) */
+typedef struct {
+ __u8 jmp_boot[3];
+ __u8 oem_name[8];
+ __u8 res_zero[53];
+} bpb64_t;
+
+/* EXFAT EXTEND BIOS parameter block (56 bytes) */
+typedef struct {
+ __le64 vol_offset;
+ __le64 vol_length;
+ __le32 fat_offset;
+ __le32 fat_length;
+ __le32 clu_offset;
+ __le32 clu_count;
+ __le32 root_cluster;
+ __le32 vol_serial;
+ __u8 fs_version[2];
+ __le16 vol_flags;
+ __u8 sect_size_bits;
+ __u8 sect_per_clus_bits;
+ __u8 num_fats;
+ __u8 phy_drv_no;
+ __u8 perc_in_use;
+ __u8 reserved2[7];
+} bsx64_t;
+
+/* FAT32 PBR (64 bytes) */
+typedef struct {
+ bpb_t bpb;
+} pbr16_t;
+
+/* FAT32 PBR[BPB+BSX] (96 bytes) */
+typedef struct {
+ bpb_t bpb;
+ bsx32_t bsx;
+} pbr32_t;
+
+/* EXFAT PBR[BPB+BSX] (120 bytes) */
+typedef struct {
+ bpb64_t bpb;
+ bsx64_t bsx;
+} pbr64_t;
+
+/* Common PBR[Partition Boot Record] (512 bytes) */
+typedef struct {
+ union {
+ __u8 raw[64];
+ bpb_t fat;
+ bpb64_t f64;
+ } bpb;
+ union {
+ __u8 raw[56];
+ bsx32_t f32;
+ bsx64_t f64;
+ } bsx;
+ __u8 boot_code[390];
+ __le16 signature;
+} pbr_t;
+
+/* FAT32 filesystem information sector (512 bytes) */
+typedef struct {
+ __le32 signature1; // aligned
+ __u8 reserved1[480];
+ __le32 signature2; // aligned
+ __le32 free_cluster; // aligned
+ __le32 next_cluster; // aligned
+ __u8 reserved2[14];
+ __le16 signature3[2];
+} fat32_fsi_t;
+
+/* FAT directory entry (32 bytes) */
+typedef struct {
+ __u8 dummy[32];
+} DENTRY_T;
+
+typedef struct {
+ __u8 name[DOS_NAME_LENGTH]; /* 11 chars */
+ __u8 attr;
+ __u8 lcase;
+ __u8 create_time_ms;
+ __le16 create_time; // aligned
+ __le16 create_date; // aligned
+ __le16 access_date; // aligned
+ __le16 start_clu_hi; // aligned
+ __le16 modify_time; // aligned
+ __le16 modify_date; // aligned
+ __le16 start_clu_lo; // aligned
+ __le32 size; // aligned
+} DOS_DENTRY_T;
+
+/* FAT extended directory entry (32 bytes) */
+typedef struct {
+ __u8 order;
+ __u8 unicode_0_4[10];
+ __u8 attr;
+ __u8 sysid;
+ __u8 checksum;
+ __le16 unicode_5_10[6]; // aligned
+ __le16 start_clu; // aligned
+ __le16 unicode_11_12[2]; // aligned
+} EXT_DENTRY_T;
+
+/* EXFAT file directory entry (32 bytes) */
+typedef struct {
+ __u8 type;
+ __u8 num_ext;
+ __le16 checksum; // aligned
+ __le16 attr; // aligned
+ __le16 reserved1;
+ __le16 create_time; // aligned
+ __le16 create_date; // aligned
+ __le16 modify_time; // aligned
+ __le16 modify_date; // aligned
+ __le16 access_time; // aligned
+ __le16 access_date; // aligned
+ __u8 create_time_ms;
+ __u8 modify_time_ms;
+ __u8 create_tz;
+ __u8 modify_tz;
+ __u8 access_tz;
+ __u8 reserved2[7];
+} FILE_DENTRY_T;
+
+/* EXFAT stream extension directory entry (32 bytes) */
+typedef struct {
+ __u8 type;
+ __u8 flags;
+ __u8 reserved1;
+ __u8 name_len;
+ __le16 name_hash; // aligned
+ __le16 reserved2;
+ __le64 valid_size; // aligned
+ __le32 reserved3; // aligned
+ __le32 start_clu; // aligned
+ __le64 size; // aligned
+} STRM_DENTRY_T;
+
+/* EXFAT file name directory entry (32 bytes) */
+typedef struct {
+ __u8 type;
+ __u8 flags;
+ __le16 unicode_0_14[15]; // aligned
+} NAME_DENTRY_T;
+
+/* EXFAT allocation bitmap directory entry (32 bytes) */
+typedef struct {
+ __u8 type;
+ __u8 flags;
+ __u8 reserved[18];
+ __le32 start_clu; // aligned
+ __le64 size; // aligned
+} BMAP_DENTRY_T;
+
+/* EXFAT up-case table directory entry (32 bytes) */
+typedef struct {
+ __u8 type;
+ __u8 reserved1[3];
+ __le32 checksum; // aligned
+ __u8 reserved2[12];
+ __le32 start_clu; // aligned
+ __le64 size; // aligned
+} CASE_DENTRY_T;
+
+/* EXFAT volume label directory entry (32 bytes) */
+typedef struct {
+ __u8 type;
+ __u8 label_len;
+ __le16 unicode_0_10[11]; // aligned
+ __u8 reserved[8];
+} VOLM_DENTRY_T;
+
+#endif /* _SDFAT_FS_H */
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / blobdiff