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221 lines
8.3 KiB
C
221 lines
8.3 KiB
C
/*
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* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/************************************************************************/
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/* */
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/* PROJECT : exFAT & FAT12/16/32 File System */
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/* FILE : exfat_api.h */
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/* PURPOSE : Header File for exFAT API Glue Layer */
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/* */
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/*----------------------------------------------------------------------*/
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/* NOTES */
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/* */
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/*----------------------------------------------------------------------*/
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/* REVISION HISTORY (Ver 0.9) */
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/* */
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/* - 2010.11.15 [Joosun Hahn] : first writing */
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/* */
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/************************************************************************/
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#ifndef _EXFAT_API_H
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#define _EXFAT_API_H
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#include "exfat_config.h"
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#include "exfat_global.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/*----------------------------------------------------------------------*/
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/* Constant & Macro Definitions */
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/*----------------------------------------------------------------------*/
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#define EXFAT_SUPER_MAGIC (0x2011BAB0L)
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#define EXFAT_ROOT_INO 1
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/* FAT types */
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#define FAT12 0x01 // FAT12
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#define FAT16 0x0E // Win95 FAT16 (LBA)
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#define FAT32 0x0C // Win95 FAT32 (LBA)
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#define EXFAT 0x07 // exFAT
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/* file name lengths */
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#define MAX_CHARSET_SIZE 3 // max size of multi-byte character
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#define MAX_PATH_DEPTH 15 // max depth of path name
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#define MAX_NAME_LENGTH 256 // max len of file name including NULL
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#define MAX_PATH_LENGTH 260 // max len of path name including NULL
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#define DOS_NAME_LENGTH 11 // DOS file name length excluding NULL
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#define DOS_PATH_LENGTH 80 // DOS path name length excluding NULL
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/* file attributes */
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#define ATTR_NORMAL 0x0000
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#define ATTR_READONLY 0x0001
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#define ATTR_HIDDEN 0x0002
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#define ATTR_SYSTEM 0x0004
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#define ATTR_VOLUME 0x0008
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#define ATTR_SUBDIR 0x0010
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#define ATTR_ARCHIVE 0x0020
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#define ATTR_SYMLINK 0x0040
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#define ATTR_EXTEND 0x000F
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#define ATTR_RWMASK 0x007E
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/* file creation modes */
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#define FM_REGULAR 0x00
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#define FM_SYMLINK 0x40
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/* return values */
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#define FFS_SUCCESS 0
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#define FFS_MEDIAERR 1
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#define FFS_FORMATERR 2
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#define FFS_MOUNTED 3
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#define FFS_NOTMOUNTED 4
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#define FFS_ALIGNMENTERR 5
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#define FFS_SEMAPHOREERR 6
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#define FFS_INVALIDPATH 7
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#define FFS_INVALIDFID 8
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#define FFS_NOTFOUND 9
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#define FFS_FILEEXIST 10
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#define FFS_PERMISSIONERR 11
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#define FFS_NOTOPENED 12
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#define FFS_MAXOPENED 13
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#define FFS_FULL 14
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#define FFS_EOF 15
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#define FFS_DIRBUSY 16
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#define FFS_MEMORYERR 17
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#define FFS_NAMETOOLONG 18
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#define FFS_ERROR 19 // generic error code
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/*----------------------------------------------------------------------*/
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/* Type Definitions */
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/*----------------------------------------------------------------------*/
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typedef struct {
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UINT16 Year;
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UINT16 Month;
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UINT16 Day;
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UINT16 Hour;
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UINT16 Minute;
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UINT16 Second;
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UINT16 MilliSecond;
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} DATE_TIME_T;
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typedef struct {
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UINT32 Offset; // start sector number of the partition
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UINT32 Size; // in sectors
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} PART_INFO_T;
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typedef struct {
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UINT32 SecSize; // sector size in bytes
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UINT32 DevSize; // block device size in sectors
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} DEV_INFO_T;
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typedef struct {
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UINT32 FatType;
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UINT32 ClusterSize;
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UINT32 NumClusters;
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UINT32 FreeClusters;
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UINT32 UsedClusters;
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} VOL_INFO_T;
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/* directory structure */
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typedef struct {
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UINT32 dir;
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INT32 size;
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UINT8 flags;
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} CHAIN_T;
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/* file id structure */
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typedef struct {
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CHAIN_T dir;
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UINT8 flags;
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INT32 entry;
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UINT32 type;
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UINT32 attr;
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UINT32 start_clu;
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INT32 hint_last_off;
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UINT32 hint_last_clu;
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INT64 rwoffset;
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UINT64 size;
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} FILE_ID_T;
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typedef struct {
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INT8 Name[MAX_NAME_LENGTH *MAX_CHARSET_SIZE];
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INT8 ShortName[DOS_NAME_LENGTH + 2]; // used only for FAT12/16/32, not used for exFAT
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UINT32 Attr;
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UINT64 Size;
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UINT32 NumSubdirs;
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DATE_TIME_T CreateTimestamp;
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DATE_TIME_T ModifyTimestamp;
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DATE_TIME_T AccessTimestamp;
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} DIR_ENTRY_T;
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/*======================================================================*/
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/* */
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/* API FUNCTION DECLARATIONS */
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/* (CHANGE THIS PART IF REQUIRED) */
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/* */
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/*======================================================================*/
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/*----------------------------------------------------------------------*/
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/* External Function Declarations */
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/*----------------------------------------------------------------------*/
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/* file system initialization & shutdown functions */
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INT32 FsInit(void);
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INT32 FsShutdown(void);
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/* volume management functions */
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INT32 FsMountVol(struct super_block *sb);
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INT32 FsUmountVol(struct super_block *sb);
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INT32 FsGetVolInfo(struct super_block *sb, VOL_INFO_T *info);
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INT32 FsSyncVol(struct super_block *sb, INT32 do_sync);
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/* file management functions */
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INT32 FsLookupFile(struct inode *inode, UINT8 *path, FILE_ID_T *fid);
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INT32 FsCreateFile(struct inode *inode, UINT8 *path, UINT8 mode, FILE_ID_T *fid);
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INT32 FsReadFile(struct inode *inode, FILE_ID_T *fid, void *buffer, UINT64 count, UINT64 *rcount);
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INT32 FsWriteFile(struct inode *inode, FILE_ID_T *fid, void *buffer, UINT64 count, UINT64 *wcount);
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INT32 FsTruncateFile(struct inode *inode, UINT64 old_size, UINT64 new_size);
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INT32 FsMoveFile(struct inode *old_parent_inode, FILE_ID_T *fid, struct inode *new_parent_inode, struct dentry *new_dentry);
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INT32 FsRemoveFile(struct inode *inode, FILE_ID_T *fid);
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INT32 FsSetAttr(struct inode *inode, UINT32 attr);
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INT32 FsReadStat(struct inode *inode, DIR_ENTRY_T *info);
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INT32 FsWriteStat(struct inode *inode, DIR_ENTRY_T *info);
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INT32 FsMapCluster(struct inode *inode, INT32 clu_offset, UINT32 *clu);
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/* directory management functions */
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INT32 FsCreateDir(struct inode *inode, UINT8 *path, FILE_ID_T *fid);
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INT32 FsReadDir(struct inode *inode, DIR_ENTRY_T *dir_entry);
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INT32 FsRemoveDir(struct inode *inode, FILE_ID_T *fid);
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/* debug functions */
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INT32 FsReleaseCache(struct super_block *sb);
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/* partition management functions */
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//INT32 FsSetPartition(INT32 dev, INT32 num_vol, PART_INFO_T *vol_spec);
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//INT32 FsGetPartition(INT32 dev, INT32 *num_vol, PART_INFO_T *vol_spec);
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//INT32 FsGetDevInfo(INT32 dev, DEV_INFO_T *info);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _EXFAT_API_H */
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/* end of exfat_api.h */
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