#ifndef CYGONCE_FATFS_FATFS_H#define CYGONCE_FATFS_FATFS_H//==========================================================================////      fatfs.h////      FAT file system header ////==========================================================================//####ECOSGPLCOPYRIGHTBEGIN####// -------------------------------------------// This file is part of eCos, the Embedded Configurable Operating System.// Copyright (C) 2003 Savin Zlobec //// eCos 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 or (at your option) any later version.//// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.//// As a special exception, if other files instantiate templates or use macros// or inline functions from this file, or you compile this file and link it// with other works to produce a work based on this file, this file does not// by itself cause the resulting work to be covered by the GNU General Public// License. However the source code for this file must still be made available// in accordance with section (3) of the GNU General Public License.//// This exception does not invalidate any other reasons why a work based on// this file might be covered by the GNU General Public License.//// -------------------------------------------//####ECOSGPLCOPYRIGHTEND####//==========================================================================//#####DESCRIPTIONBEGIN####//// Author(s):           savin // Date:                2003-06-29////####DESCRIPTIONEND####////==========================================================================#include <pkgconf/fs_fat.h>#include <cyg/kernel/kapi.h>#include <cyg/infra/cyg_type.h>#include <cyg/io/io.h>#include <blib/blib.h>#include <unistd.h>#include <sys/types.h>#include <fcntl.h>#include <sys/stat.h>#include <errno.h>#include <dirent.h>#include <stdlib.h>#include <string.h>#include <cyg/fileio/fileio.h>// --------------------------------------------------------------------------#define FATFS_HASH_TABLE_SIZE CYGNUM_FS_FAT_NODE_HASH_TABLE_SIZE #define FATFS_NODE_ALLOC_THRESHOLD CYGNUM_FS_FAT_NODE_ALLOC_THRESHOLD #define FATFS_FAT_TABLE_CACHE_INCREMENT CYGNUM_FS_FAT_FAT_TABLE_CACHE_INCREMENT #ifdef CYGDBG_FS_FAT_NODE_CACHE_EXTRA_CHECKS# define FATFS_NODE_CACHE_EXTRA_CHECKS 1#endif// --------------------------------------------------------------------------// Node cache tracing support//#define FATFS_TRACE_NODE_CACHE 1// FAT table cache tracing support//#define FATFS_TRACE_FAT_TABLE_CACHE 1// FAT table operations tracing support //#define FATFS_TRACE_FAT_TABLE 1// FAT dir entry operations tracing support //#define FATFS_TRACE_DIR_ENTRY 1// FAT clusters operations tracing support //#define FATFS_TRACE_CLUSTER 1// FAT data tracing support //#define FATFS_TRACE_DATA 1// FAT file operations tracing support //#define FATFS_TRACE_FILE_OP 1// FAT filesystem operations tracing support //#define FATFS_TRACE_FS_OP 1// --------------------------------------------------------------------------typedef enum fatfs_type_e{    FATFS_FAT12 = 0,        FATFS_FAT16         } fatfs_type_t;typedef struct fatfs_data_pos_s{    cyg_uint32 cluster;      // Cluster number    cyg_uint32 cluster_snum; // Cluster file seq number                              // (0 - first cluster of file,                             //  1 - second cluster of file, ...)      cyg_uint32 cluster_pos;  // Position inside cluster} fatfs_data_pos_t;typedef struct fatfs_tcache_s{    cyg_uint32 *clusters; // Cached clusters array    cyg_uint32  size;     // Number of cached clusters in array    cyg_uint32  max_size; // Size of array (allocated space)} fatfs_tcache_t;typedef struct fatfs_node_s{    char                 filename[12+1]; // File name    mode_t               mode;           // Node type    cyg_ucount32         refcnt;         // Open file/current dir references    size_t               size;           // Size of file in bytes    time_t               ctime;          // Creation timestamp    time_t               atime;          // Last access timestamp    time_t               mtime;          // Last write timestamp    cyg_uint8            priv_data;      // Private data    cyg_uint32           cluster;        // First cluster number    cyg_uint32           parent_cluster; // First cluster of parent dentry    fatfs_data_pos_t     dentry_pos;     // Position of node's dir entry on disk    struct fatfs_node_s *list_prev;      // Next node in list    struct fatfs_node_s *list_next;      // Prev node in list    struct fatfs_node_s *hash_next;      // Next node in hash    fatfs_tcache_t       tcache;         // Node FAT table clusters cache } fatfs_node_t;typedef struct fatfs_hash_table_s {    cyg_uint32     size;                         // Number of slots    cyg_uint32     n;                            // Number of nodes     fatfs_node_t  *nodes[FATFS_HASH_TABLE_SIZE]; // Nodes slots} fatfs_hash_table_t;typedef struct fatfs_node_list_s{    cyg_uint32    size;          // Number of nodes in list    fatfs_node_t *first;         // First node in list    fatfs_node_t *last;          // Last node in list} fatfs_node_list_t;typedef struct fatfs_disk_s{    cyg_uint32   sector_size;        // Sector size in bytes    cyg_uint32   sector_size_log2;   // Sector size log2    cyg_uint32   cluster_size;       // Cluster size in bytes    cyg_uint32   cluster_size_log2;  // Cluster size log2     cyg_uint32   fat_tbl_pos;        // Position of the first FAT table    cyg_uint32   fat_tbl_size;       // FAT table size in bytes    cyg_uint32   fat_tbl_nents;      // Number of entries in FAT table    cyg_uint32   fat_tbls_num;       // Number of FAT tables    cyg_uint32   fat_root_dir_pos;   // Position of the root dir    cyg_uint32   fat_root_dir_size;  // Root dir size in bytes     cyg_uint32   fat_root_dir_nents; // Max number of entries in root dir    cyg_uint32   fat_data_pos;       // Position of data area    fatfs_type_t fat_type;           // Type of FAT - 12 or 16        cyg_io_handle_t  dev_h;          // Disk device handle    fatfs_node_t    *root;           // Root dir node    cyg_uint8       *tcache_mem;     // FAT table cache memory base    cyg_handle_t     tcache_mpool_h; // FAT table cache memory pool handle     cyg_mempool_var  tcache_mpool;   // FAT table cache memory pool struct     cyg_uint8       *bcache_mem;     // Block cache memory base    cyg_blib_t       blib;           // Block cache and access library instance    fatfs_node_list_t  live_nlist;   // List of nodes with refcnt > 0    fatfs_node_list_t  dead_nlist;   // List of nodes with refcnt == 0    fatfs_hash_table_t node_hash;    // Hash of nodes in live and dead lists} fatfs_disk_t;// --------------------------------------------------------------------------int  fatfs_get_disk_info(fatfs_disk_t *disk);void fatfs_get_root_node(fatfs_disk_t *disk, fatfs_node_t *root);bool fatfs_is_node_root_node(fatfs_node_t *node);int  fatfs_get_dir_entry_node(fatfs_disk_t *disk,                              fatfs_node_t *dir,                              cyg_uint32   *pos,                              fatfs_node_t *node);int  fatfs_write_file_attr(fatfs_disk_t *disk, fatfs_node_t *node);int  fatfs_delete_file(fatfs_disk_t *disk, fatfs_node_t *node);int  fatfs_create_file(fatfs_disk_t *disk,                        fatfs_node_t *dir,                        const char   *name,                       int           namelen,                       fatfs_node_t *node);int  fatfs_create_dir(fatfs_disk_t *disk,                       fatfs_node_t *dir,                       const char   *name,                      int           namelen,                      fatfs_node_t *node);int  fatfs_trunc_file(fatfs_disk_t *disk, fatfs_node_t *node);int  fatfs_rename_file(fatfs_disk_t *disk,                        fatfs_node_t *dir1,                       fatfs_node_t *node,                       fatfs_node_t *dir2,                       const char   *name,                       int           namelen);int  fatfs_read_data(fatfs_disk_t *disk,                     fatfs_node_t *node,                     void         *data,                     cyg_uint32   *len,                     cyg_uint32    off);int  fatfs_write_data(fatfs_disk_t *disk,                      fatfs_node_t *node,                      void         *data,                      cyg_uint32   *len,                      cyg_uint32    off);// --------------------------------------------------------------------------void fatfs_node_cache_init(fatfs_disk_t *disk);void fatfs_node_cache_flush(fatfs_disk_t *disk);fatfs_node_t *fatfs_node_alloc(fatfs_disk_t *disk, fatfs_node_t *node_data);void fatfs_node_ref(fatfs_disk_t *disk, fatfs_node_t *node);void fatfs_node_unref(fatfs_disk_t *disk, fatfs_node_t *node);void fatfs_node_touch(fatfs_disk_t *disk, fatfs_node_t *node);void fatfs_node_rehash(fatfs_disk_t *disk, fatfs_node_t *node);void fatfs_node_free(fatfs_disk_t *disk, fatfs_node_t *node);fatfs_node_t* fatfs_node_find(fatfs_disk_t *disk,                               const char   *name,                               unsigned int  namelen,                               cyg_uint32    parent_cluster);int  fatfs_get_live_node_count(fatfs_disk_t *disk);int  fatfs_get_dead_node_count(fatfs_disk_t *disk);void fatfs_node_flush_dead_tcache(fatfs_disk_t *disk);// --------------------------------------------------------------------------int  fatfs_tcache_create(fatfs_disk_t *disk, cyg_uint32 mem_size);void fatfs_tcache_delete(fatfs_disk_t *disk);void fatfs_tcache_init(fatfs_disk_t *disk, fatfs_tcache_t *tcache);void fatfs_tcache_flush(fatfs_disk_t *disk, fatfs_tcache_t *tcache);bool fatfs_tcache_get(fatfs_disk_t   *disk,                      fatfs_tcache_t *tcache,                       cyg_uint32      num,                       cyg_uint32     *cluster);bool fatfs_tcache_get_last(fatfs_disk_t   *disk,                           fatfs_tcache_t *tcache,                            cyg_uint32     *num,                            cyg_uint32     *cluster);bool fatfs_tcache_set(fatfs_disk_t   *disk,                      fatfs_tcache_t *tcache,                       cyg_uint32      num,                       cyg_uint32      cluster);// --------------------------------------------------------------------------// Support routines// These enable the definition of local versions of certain routines// if the given packages are not present.#ifndef CYGPKG_LIBC_I18N__externC int toupper( int c );#endif#ifndef CYGFUN_LIBC_STRING_BSD_FUNCS__externC int strcasecmp( const char *s1, const char *s2 );__externC int strncasecmp( const char *s1, const char *s2, size_t n );#endif// --------------------------------------------------------------------------#endif // CYGONCE_FATFS_FATFS_H// --------------------------------------------------------------------------// EOF fatfs.h