Fixed AVRISP project not sending a full erase-and-write EEPROM command to XMEGA targe...
[pub/USBasp.git] / Projects / TemperatureDataLogger / Lib / FATFs / ff.c
index 6382fea..b301390 100644 (file)
-/*----------------------------------------------------------------------------/\r
-/  FatFs - FAT file system module  R0.07e                    (C)ChaN, 2010\r
-/-----------------------------------------------------------------------------/\r
-/ FatFs module is a generic FAT file system module for small embedded systems.\r
-/ This is a free software that opened for education, research and commercial\r
-/ developments under license policy of following trems.\r
-/\r
-/  Copyright (C) 2010, ChaN, all right reserved.\r
-/\r
-/ * The FatFs module is a free software and there is NO WARRANTY.\r
-/ * No restriction on use. You can use, modify and redistribute it for\r
-/   personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.\r
-/ * Redistributions of source code must retain the above copyright notice.\r
-/\r
-/-----------------------------------------------------------------------------/\r
-/ Feb 26,'06 R0.00  Prototype.\r
-/\r
-/ Apr 29,'06 R0.01  First stable version.\r
-/\r
-/ Jun 01,'06 R0.02  Added FAT12 support.\r
-/                   Removed unbuffered mode.\r
-/                   Fixed a problem on small (<32M) patition.\r
-/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).\r
-/\r
-/ Sep 22,'06 R0.03  Added f_rename().\r
-/                   Changed option _FS_MINIMUM to _FS_MINIMIZE.\r
-/ Dec 11,'06 R0.03a Improved cluster scan algolithm to write files fast.\r
-/                   Fixed f_mkdir() creates incorrect directory on FAT32.\r
-/\r
-/ Feb 04,'07 R0.04  Supported multiple drive system.\r
-/                   Changed some interfaces for multiple drive system.\r
-/                   Changed f_mountdrv() to f_mount().\r
-/                   Added f_mkfs().\r
-/ Apr 01,'07 R0.04a Supported multiple partitions on a plysical drive.\r
-/                   Added a capability of extending file size to f_lseek().\r
-/                   Added minimization level 3.\r
-/                   Fixed an endian sensitive code in f_mkfs().\r
-/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.\r
-/                   Added FSInfo support.\r
-/                   Fixed DBCS name can result FR_INVALID_NAME.\r
-/                   Fixed short seek (<= csize) collapses the file object.\r
-/\r
-/ Aug 25,'07 R0.05  Changed arguments of f_read(), f_write() and f_mkfs().\r
-/                   Fixed f_mkfs() on FAT32 creates incorrect FSInfo.\r
-/                   Fixed f_mkdir() on FAT32 creates incorrect directory.\r
-/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().\r
-/                   Fixed off by one error at FAT sub-type determination.\r
-/                   Fixed btr in f_read() can be mistruncated.\r
-/                   Fixed cached sector is not flushed when create and close\r
-/                   without write.\r
-/\r
-/ Apr 01,'08 R0.06  Added fputc(), fputs(), fprintf() and fgets().\r
-/                   Improved performance of f_lseek() on moving to the same\r
-/                   or following cluster.\r
-/\r
-/ Apr 01,'09 R0.07  Merged Tiny-FatFs as a buffer configuration option.\r
-/                   Added long file name support.\r
-/                   Added multiple code page support.\r
-/                   Added re-entrancy for multitask operation.\r
-/                   Added auto cluster size selection to f_mkfs().\r
-/                   Added rewind option to f_readdir().\r
-/                   Changed result code of critical errors.\r
-/                   Renamed string functions to avoid name collision.\r
-/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.\r
-/                   Added multiple sector size support.\r
-/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.\r
-/                   Fixed wrong cache control in f_lseek().\r
-/                   Added relative path feature.\r
-/                   Added f_chdir() and f_chdrive().\r
-/                   Added proper case conversion to extended char.\r
-/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.\r
-/                   Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.\r
-/                   Fixed name matching error on the 13 char boundary.\r
-/                   Added a configuration option, _LFN_UNICODE.\r
-/                   Changed f_readdir() to return the SFN with always upper\r
-/                   case on non-LFN cfg.\r
-/---------------------------------------------------------------------------*/\r
-\r
-#include "ff.h"                        /* FatFs configurations and declarations */\r
-#include "diskio.h"            /* Declarations of low level disk I/O functions */\r
-\r
-/*--------------------------------------------------------------------------\r
-\r
-   Module Private Definitions\r
-\r
----------------------------------------------------------------------------*/\r
-\r
-#if _FATFS != 0x007E\r
-#error Wrong include file (ff.h).\r
-#endif\r
-\r
-#if _FS_REENTRANT\r
-#if _USE_LFN == 1\r
-#error Static LFN work area must not be used in re-entrant configuration.\r
-#endif\r
-#define        ENTER_FF(fs)            { if (!lock_fs(fs)) return FR_TIMEOUT; }\r
-#define        LEAVE_FF(fs, res)       { unlock_fs(fs, res); return res; }\r
-\r
-#else\r
-#define        ENTER_FF(fs)\r
-#define LEAVE_FF(fs, res)      return res\r
-\r
-#endif\r
-\r
-#define        ABORT(fs, res)          { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }\r
-\r
-#ifndef NULL\r
-#define        NULL    0\r
-#endif\r
-\r
-/* Name status flags */\r
-#define NS                     11              /* Offset of name status byte */\r
-#define NS_LOSS                0x01    /* Out of 8.3 format */\r
-#define NS_LFN         0x02    /* Force to create LFN entry */\r
-#define NS_LAST                0x04    /* Last segment */\r
-#define NS_BODY                0x08    /* Lower case flag (body) */\r
-#define NS_EXT         0x10    /* Lower case flag (ext) */\r
-#define NS_DOT         0x20    /* Dot entry */\r
-\r
-\r
-\r
-\r
-/*--------------------------------------------------------------------------\r
-\r
-   Private Work Area\r
-\r
----------------------------------------------------------------------------*/\r
-\r
-#if _DRIVES < 1 || _DRIVES > 9\r
-#error Number of drives must be 1-9.\r
-#endif\r
-static\r
-FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */\r
-\r
-static\r
-WORD Fsid;                             /* File system mount ID */\r
-\r
-#if _FS_RPATH\r
-static\r
-BYTE Drive;                            /* Current drive */\r
-#endif\r
-\r
-\r
-#if _USE_LFN == 1      /* LFN with static LFN working buffer */\r
-static\r
-WCHAR LfnBuf[_MAX_LFN + 1];\r
-#define        NAMEBUF(sp,lp)  BYTE sp[12]; WCHAR *lp = LfnBuf\r
-#define INITBUF(dj,sp,lp)      dj.fn = sp; dj.lfn = lp\r
-\r
-#elif _USE_LFN > 1     /* LFN with dynamic LFN working buffer */\r
-#define        NAMEBUF(sp,lp)  BYTE sp[12]; WCHAR lbuf[_MAX_LFN + 1], *lp = lbuf\r
-#define INITBUF(dj,sp,lp)      dj.fn = sp; dj.lfn = lp\r
-\r
-#else                          /* No LFN */\r
-#define        NAMEBUF(sp,lp)  BYTE sp[12]\r
-#define INITBUF(dj,sp,lp)      dj.fn = sp\r
-\r
-#endif\r
-\r
-\r
-\r
-\r
-/*--------------------------------------------------------------------------\r
-\r
-   Module Private Functions\r
-\r
----------------------------------------------------------------------------*/\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* String functions                                                      */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-/* Copy memory to memory */\r
-static\r
-void mem_cpy (void* dst, const void* src, int cnt) {\r
-       char *d = (char*)dst;\r
-       const char *s = (const char *)src;\r
-       while (cnt--) *d++ = *s++;\r
-}\r
-\r
-/* Fill memory */\r
-static\r
-void mem_set (void* dst, int val, int cnt) {\r
-       char *d = (char*)dst;\r
-       while (cnt--) *d++ = (char)val;\r
-}\r
-\r
-/* Compare memory to memory */\r
-static\r
-int mem_cmp (const void* dst, const void* src, int cnt) {\r
-       const char *d = (const char *)dst, *s = (const char *)src;\r
-       int r = 0;\r
-       while (cnt-- && (r = *d++ - *s++) == 0) ;\r
-       return r;\r
-}\r
-\r
-/* Check if chr is contained in the string */\r
-static\r
-int chk_chr (const char* str, int chr) {\r
-       while (*str && *str != chr) str++;\r
-       return *str;\r
-}\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Request/Release grant to access the volume                            */\r
-/*-----------------------------------------------------------------------*/\r
-#if _FS_REENTRANT\r
-\r
-static\r
-BOOL lock_fs (\r
-       FATFS *fs               /* File system object */\r
-)\r
-{\r
-       return ff_req_grant(fs->sobj);\r
-}\r
-\r
-\r
-static\r
-void unlock_fs (\r
-       FATFS *fs,              /* File system object */\r
-       FRESULT res             /* Result code to be returned */\r
-)\r
-{\r
-       if (res != FR_NOT_ENABLED &&\r
-               res != FR_INVALID_DRIVE &&\r
-               res != FR_INVALID_OBJECT &&\r
-               res != FR_TIMEOUT) {\r
-               ff_rel_grant(fs->sobj);\r
-       }\r
-}\r
-#endif\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Change window offset                                                  */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT move_window (\r
-       FATFS *fs,              /* File system object */\r
-       DWORD sector    /* Sector number to make apperance in the fs->win[] */\r
-)                                      /* Move to zero only writes back dirty window */\r
-{\r
-       DWORD wsect;\r
-\r
-\r
-       wsect = fs->winsect;\r
-       if (wsect != sector) {  /* Changed current window */\r
-#if !_FS_READONLY\r
-               if (fs->wflag) {        /* Write back dirty window if needed */\r
-                       if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK)\r
-                               return FR_DISK_ERR;\r
-                       fs->wflag = 0;\r
-                       if (wsect < (fs->fatbase + fs->sects_fat)) {    /* In FAT area */\r
-                               BYTE nf;\r
-                               for (nf = fs->n_fats; nf > 1; nf--) {   /* Refrect the change to all FAT copies */\r
-                                       wsect += fs->sects_fat;\r
-                                       disk_write(fs->drive, fs->win, wsect, 1);\r
-                               }\r
-                       }\r
-               }\r
-#endif\r
-               if (sector) {\r
-                       if (disk_read(fs->drive, fs->win, sector, 1) != RES_OK)\r
-                               return FR_DISK_ERR;\r
-                       fs->winsect = sector;\r
-               }\r
-       }\r
-\r
-       return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Clean-up cached data                                                  */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-static\r
-FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */\r
-       FATFS *fs       /* File system object */\r
-)\r
-{\r
-       FRESULT res;\r
-\r
-\r
-       res = move_window(fs, 0);\r
-       if (res == FR_OK) {\r
-               /* Update FSInfo sector if needed */\r
-               if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {\r
-                       fs->winsect = 0;\r
-                       mem_set(fs->win, 0, 512);\r
-                       ST_WORD(fs->win+BS_55AA, 0xAA55);\r
-                       ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);\r
-                       ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);\r
-                       ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);\r
-                       ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);\r
-                       disk_write(fs->drive, fs->win, fs->fsi_sector, 1);\r
-                       fs->fsi_flag = 0;\r
-               }\r
-               /* Make sure that no pending write process in the physical drive */\r
-               if (disk_ioctl(fs->drive, CTRL_SYNC, (void*)NULL) != RES_OK)\r
-                       res = FR_DISK_ERR;\r
-       }\r
-\r
-       return res;\r
-}\r
-#endif\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* FAT access - Read value of a FAT entry                                */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-\r
-DWORD get_fat (        /* 0xFFFFFFFF:Disk error, 1:Interal error, Else:Cluster status */\r
-       FATFS *fs,      /* File system object */\r
-       DWORD clst      /* Cluster# to get the link information */\r
-)\r
-{\r
-       UINT wc, bc;\r
-       DWORD fsect;\r
-\r
-\r
-       if (clst < 2 || clst >= fs->max_clust)  /* Range check */\r
-               return 1;\r
-\r
-       fsect = fs->fatbase;\r
-       switch (fs->fs_type) {\r
-       case FS_FAT12 :\r
-               bc = clst; bc += bc / 2;\r
-               if (move_window(fs, fsect + (bc / SS(fs)))) break;\r
-               wc = fs->win[bc & (SS(fs) - 1)]; bc++;\r
-               if (move_window(fs, fsect + (bc / SS(fs)))) break;\r
-               wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;\r
-               return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);\r
-\r
-       case FS_FAT16 :\r
-               if (move_window(fs, fsect + (clst / (SS(fs) / 2)))) break;\r
-               return LD_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)]);\r
-\r
-       case FS_FAT32 :\r
-               if (move_window(fs, fsect + (clst / (SS(fs) / 4)))) break;\r
-               return LD_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;\r
-       }\r
-\r
-       return 0xFFFFFFFF;      /* An error occured at the disk I/O layer */\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* FAT access - Change value of a FAT entry                              */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-\r
-FRESULT put_fat (\r
-       FATFS *fs,      /* File system object */\r
-       DWORD clst,     /* Cluster# to be changed in range of 2 to fs->max_clust - 1 */\r
-       DWORD val       /* New value to mark the cluster */\r
-)\r
-{\r
-       UINT bc;\r
-       BYTE *p;\r
-       DWORD fsect;\r
-       FRESULT res;\r
-\r
-\r
-       if (clst < 2 || clst >= fs->max_clust) {        /* Range check */\r
-               res = FR_INT_ERR;\r
-\r
-       } else {\r
-               fsect = fs->fatbase;\r
-               switch (fs->fs_type) {\r
-               case FS_FAT12 :\r
-                       bc = clst; bc += bc / 2;\r
-                       res = move_window(fs, fsect + (bc / SS(fs)));\r
-                       if (res != FR_OK) break;\r
-                       p = &fs->win[bc & (SS(fs) - 1)];\r
-                       *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;\r
-                       bc++;\r
-                       fs->wflag = 1;\r
-                       res = move_window(fs, fsect + (bc / SS(fs)));\r
-                       if (res != FR_OK) break;\r
-                       p = &fs->win[bc & (SS(fs) - 1)];\r
-                       *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));\r
-                       break;\r
-\r
-               case FS_FAT16 :\r
-                       res = move_window(fs, fsect + (clst / (SS(fs) / 2)));\r
-                       if (res != FR_OK) break;\r
-                       ST_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)], (WORD)val);\r
-                       break;\r
-\r
-               case FS_FAT32 :\r
-                       res = move_window(fs, fsect + (clst / (SS(fs) / 4)));\r
-                       if (res != FR_OK) break;\r
-                       ST_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)], val);\r
-                       break;\r
-\r
-               default :\r
-                       res = FR_INT_ERR;\r
-               }\r
-               fs->wflag = 1;\r
-       }\r
-\r
-       return res;\r
-}\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* FAT handling - Remove a cluster chain                                 */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-static\r
-FRESULT remove_chain (\r
-       FATFS *fs,                      /* File system object */\r
-       DWORD clst                      /* Cluster# to remove a chain from */\r
-)\r
-{\r
-       FRESULT res;\r
-       DWORD nxt;\r
-\r
-\r
-       if (clst < 2 || clst >= fs->max_clust) {        /* Check the range of cluster# */\r
-               res = FR_INT_ERR;\r
-\r
-       } else {\r
-               res = FR_OK;\r
-               while (clst < fs->max_clust) {                  /* Not a last link? */\r
-                       nxt = get_fat(fs, clst);                        /* Get cluster status */\r
-                       if (nxt == 0) break;                            /* Empty cluster? */\r
-                       if (nxt == 1) { res = FR_INT_ERR; break; }      /* Internal error? */\r
-                       if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }    /* Disk error? */\r
-                       res = put_fat(fs, clst, 0);                     /* Mark the cluster "empty" */\r
-                       if (res != FR_OK) break;\r
-                       if (fs->free_clust != 0xFFFFFFFF) {     /* Update FSInfo */\r
-                               fs->free_clust++;\r
-                               fs->fsi_flag = 1;\r
-                       }\r
-                       clst = nxt;     /* Next cluster */\r
-               }\r
-       }\r
-\r
-       return res;\r
-}\r
-#endif\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* FAT handling - Stretch or Create a cluster chain                      */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-static\r
-DWORD create_chain (   /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */\r
-       FATFS *fs,                      /* File system object */\r
-       DWORD clst                      /* Cluster# to stretch. 0 means create a new chain. */\r
-)\r
-{\r
-       DWORD cs, ncl, scl, mcl;\r
-\r
-\r
-       mcl = fs->max_clust;\r
-       if (clst == 0) {                /* Create new chain */\r
-               scl = fs->last_clust;                   /* Get suggested start point */\r
-               if (scl == 0 || scl >= mcl) scl = 1;\r
-       }\r
-       else {                                  /* Stretch existing chain */\r
-               cs = get_fat(fs, clst);                 /* Check the cluster status */\r
-               if (cs < 2) return 1;                   /* It is an invalid cluster */\r
-               if (cs < mcl) return cs;                /* It is already followed by next cluster */\r
-               scl = clst;\r
-       }\r
-\r
-       ncl = scl;                              /* Start cluster */\r
-       for (;;) {\r
-               ncl++;                                                  /* Next cluster */\r
-               if (ncl >= mcl) {                               /* Wrap around */\r
-                       ncl = 2;\r
-                       if (ncl > scl) return 0;        /* No free custer */\r
-               }\r
-               cs = get_fat(fs, ncl);                  /* Get the cluster status */\r
-               if (cs == 0) break;                             /* Found a free cluster */\r
-               if (cs == 0xFFFFFFFF || cs == 1)/* An error occured */\r
-                       return cs;\r
-               if (ncl == scl) return 0;               /* No free custer */\r
-       }\r
-\r
-       if (put_fat(fs, ncl, 0x0FFFFFFF))       /* Mark the new cluster "in use" */\r
-               return 0xFFFFFFFF;\r
-       if (clst != 0) {                                        /* Link it to the previous one if needed */\r
-               if (put_fat(fs, clst, ncl))\r
-                       return 0xFFFFFFFF;\r
-       }\r
-\r
-       fs->last_clust = ncl;                           /* Update FSINFO */\r
-       if (fs->free_clust != 0xFFFFFFFF) {\r
-               fs->free_clust--;\r
-               fs->fsi_flag = 1;\r
-       }\r
-\r
-       return ncl;             /* Return new cluster number */\r
-}\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Get sector# from cluster#                                             */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-\r
-DWORD clust2sect (     /* !=0: Sector number, 0: Failed - invalid cluster# */\r
-       FATFS *fs,              /* File system object */\r
-       DWORD clst              /* Cluster# to be converted */\r
-)\r
-{\r
-       clst -= 2;\r
-       if (clst >= (fs->max_clust - 2)) return 0;              /* Invalid cluster# */\r
-       return clst * fs->csize + fs->database;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Directory handling - Seek directory index                             */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT dir_seek (\r
-       DIR *dj,                /* Pointer to directory object */\r
-       WORD idx                /* Directory index number */\r
-)\r
-{\r
-       DWORD clst;\r
-       WORD ic;\r
-\r
-\r
-       dj->index = idx;\r
-       clst = dj->sclust;\r
-       if (clst == 1 || clst >= dj->fs->max_clust)     /* Check start cluster range */\r
-               return FR_INT_ERR;\r
-       if (!clst && dj->fs->fs_type == FS_FAT32)       /* Replace cluster# 0 with root cluster# if in FAT32 */\r
-               clst = dj->fs->dirbase;\r
-\r
-       if (clst == 0) {        /* Static table */\r
-               dj->clust = clst;\r
-               if (idx >= dj->fs->n_rootdir)           /* Index is out of range */\r
-                       return FR_INT_ERR;\r
-               dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32);   /* Sector# */\r
-       }\r
-       else {                          /* Dynamic table */\r
-               ic = SS(dj->fs) / 32 * dj->fs->csize;   /* Entries per cluster */\r
-               while (idx >= ic) {     /* Follow cluster chain */\r
-                       clst = get_fat(dj->fs, clst);                           /* Get next cluster */\r
-                       if (clst == 0xFFFFFFFF) return FR_DISK_ERR;     /* Disk error */\r
-                       if (clst < 2 || clst >= dj->fs->max_clust)      /* Reached to end of table or int error */\r
-                               return FR_INT_ERR;\r
-                       idx -= ic;\r
-               }\r
-               dj->clust = clst;\r
-               dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32);  /* Sector# */\r
-       }\r
-\r
-       dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */\r
-\r
-       return FR_OK;   /* Seek succeeded */\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Directory handling - Move directory index next                        */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT dir_next (     /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not streach */\r
-       DIR *dj,                /* Pointer to directory object */\r
-       BOOL streach    /* FALSE: Do not streach table, TRUE: Streach table if needed */\r
-)\r
-{\r
-       DWORD clst;\r
-       WORD i;\r
-\r
-\r
-       i = dj->index + 1;\r
-       if (!i || !dj->sect)    /* Report EOT when index has reached 65535 */\r
-               return FR_NO_FILE;\r
-\r
-       if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */\r
-               dj->sect++;                                     /* Next sector */\r
-\r
-               if (dj->clust == 0) {   /* Static table */\r
-                       if (i >= dj->fs->n_rootdir)     /* Report EOT when end of table */\r
-                               return FR_NO_FILE;\r
-               }\r
-               else {                                  /* Dynamic table */\r
-                       if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) {     /* Cluster changed? */\r
-                               clst = get_fat(dj->fs, dj->clust);                              /* Get next cluster */\r
-                               if (clst <= 1) return FR_INT_ERR;\r
-                               if (clst == 0xFFFFFFFF) return FR_DISK_ERR;\r
-                               if (clst >= dj->fs->max_clust) {                                /* When it reached end of dynamic table */\r
-#if !_FS_READONLY\r
-                                       BYTE c;\r
-                                       if (!streach) return FR_NO_FILE;                        /* When do not streach, report EOT */\r
-                                       clst = create_chain(dj->fs, dj->clust);         /* Streach cluster chain */\r
-                                       if (clst == 0) return FR_DENIED;                        /* No free cluster */\r
-                                       if (clst == 1) return FR_INT_ERR;\r
-                                       if (clst == 0xFFFFFFFF) return FR_DISK_ERR;\r
-                                       /* Clean-up streached table */\r
-                                       if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */\r
-                                       mem_set(dj->fs->win, 0, SS(dj->fs));                    /* Clear window buffer */\r
-                                       dj->fs->winsect = clust2sect(dj->fs, clst);     /* Cluster start sector */\r
-                                       for (c = 0; c < dj->fs->csize; c++) {           /* Fill the new cluster with 0 */\r
-                                               dj->fs->wflag = 1;\r
-                                               if (move_window(dj->fs, 0)) return FR_DISK_ERR;\r
-                                               dj->fs->winsect++;\r
-                                       }\r
-                                       dj->fs->winsect -= c;                                           /* Rewind window address */\r
-#else\r
-                                       return FR_NO_FILE;                      /* Report EOT */\r
-#endif\r
-                               }\r
-                               dj->clust = clst;                               /* Initialize data for new cluster */\r
-                               dj->sect = clust2sect(dj->fs, clst);\r
-                       }\r
-               }\r
-       }\r
-\r
-       dj->index = i;\r
-       dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;\r
-\r
-       return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry   */\r
-/*-----------------------------------------------------------------------*/\r
-#if _USE_LFN\r
-static\r
-const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30};     /* Offset of LFN chars in the directory entry */\r
-\r
-\r
-static\r
-BOOL cmp_lfn (                 /* TRUE:Matched, FALSE:Not matched */\r
-       WCHAR *lfnbuf,          /* Pointer to the LFN to be compared */\r
-       BYTE *dir                       /* Pointer to the directory entry containing a part of LFN */\r
-)\r
-{\r
-       int i, s;\r
-       WCHAR wc, uc;\r
-\r
-\r
-       i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13;  /* Get offset in the LFN buffer */\r
-       s = 0; wc = 1;\r
-       do {\r
-               uc = LD_WORD(dir+LfnOfs[s]);    /* Pick an LFN character from the entry */\r
-               if (wc) {       /* Last char has not been processed */\r
-                       wc = ff_wtoupper(uc);           /* Convert it to upper case */\r
-                       if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++]))    /* Compare it */\r
-                               return FALSE;                   /* Not matched */\r
-               } else {\r
-                       if (uc != 0xFFFF) return FALSE; /* Check filler */\r
-               }\r
-       } while (++s < 13);                             /* Repeat until all chars in the entry are checked */\r
-\r
-       if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i])  /* Last segment matched but different length */\r
-               return FALSE;\r
-\r
-       return TRUE;                                    /* The part of LFN matched */\r
-}\r
-\r
-\r
-\r
-static\r
-BOOL pick_lfn (                        /* TRUE:Succeeded, FALSE:Buffer overflow */\r
-       WCHAR *lfnbuf,          /* Pointer to the Unicode-LFN buffer */\r
-       BYTE *dir                       /* Pointer to the directory entry */\r
-)\r
-{\r
-       int i, s;\r
-       WCHAR wc, uc;\r
-\r
-\r
-       i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;  /* Offset in the LFN buffer */\r
-\r
-       s = 0; wc = 1;\r
-       do {\r
-               uc = LD_WORD(dir+LfnOfs[s]);                    /* Pick an LFN character from the entry */\r
-               if (wc) {       /* Last char has not been processed */\r
-                       if (i >= _MAX_LFN) return FALSE;        /* Buffer overflow? */\r
-                       lfnbuf[i++] = wc = uc;                          /* Store it */\r
-               } else {\r
-                       if (uc != 0xFFFF) return FALSE;         /* Check filler */\r
-               }\r
-       } while (++s < 13);                                             /* Read all character in the entry */\r
-\r
-       if (dir[LDIR_Ord] & 0x40) {                             /* Put terminator if it is the last LFN part */\r
-               if (i >= _MAX_LFN) return FALSE;        /* Buffer overflow? */\r
-               lfnbuf[i] = 0;\r
-       }\r
-\r
-       return TRUE;\r
-}\r
-\r
-\r
-#if !_FS_READONLY\r
-static\r
-void fit_lfn (\r
-       const WCHAR *lfnbuf,    /* Pointer to the LFN buffer */\r
-       BYTE *dir,                              /* Pointer to the directory entry */\r
-       BYTE ord,                               /* LFN order (1-20) */\r
-       BYTE sum                                /* SFN sum */\r
-)\r
-{\r
-       int i, s;\r
-       WCHAR wc;\r
-\r
-\r
-       dir[LDIR_Chksum] = sum;                 /* Set check sum */\r
-       dir[LDIR_Attr] = AM_LFN;                /* Set attribute. LFN entry */\r
-       dir[LDIR_Type] = 0;\r
-       ST_WORD(dir+LDIR_FstClusLO, 0);\r
-\r
-       i = (ord - 1) * 13;                             /* Get offset in the LFN buffer */\r
-       s = wc = 0;\r
-       do {\r
-               if (wc != 0xFFFF) wc = lfnbuf[i++];     /* Get an effective char */\r
-               ST_WORD(dir+LfnOfs[s], wc);     /* Put it */\r
-               if (!wc) wc = 0xFFFF;           /* Padding chars following last char */\r
-       } while (++s < 13);\r
-       if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40;    /* Bottom LFN part is the start of LFN sequence */\r
-       dir[LDIR_Ord] = ord;                    /* Set the LFN order */\r
-}\r
-\r
-#endif\r
-#endif\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Create numbered name                                                  */\r
-/*-----------------------------------------------------------------------*/\r
-#if _USE_LFN\r
-void gen_numname (\r
-       BYTE *dst,                      /* Pointer to genartated SFN */\r
-       const BYTE *src,        /* Pointer to source SFN to be modified */\r
-       const WCHAR *lfn,       /* Pointer to LFN */\r
-       WORD num                        /* Sequense number */\r
-)\r
-{\r
-       char ns[8];\r
-       int i, j;\r
-\r
-\r
-       mem_cpy(dst, src, 11);\r
-\r
-       if (num > 5) {  /* On many collisions, generate a hash number instead of sequencial number */\r
-               do num = (num >> 1) + (num << 15) + (WORD)*lfn++; while (*lfn);\r
-       }\r
-\r
-       /* itoa */\r
-       i = 7;\r
-       do {\r
-               ns[i--] = (num % 10) + '0';\r
-               num /= 10;\r
-       } while (num);\r
-       ns[i] = '~';\r
-\r
-       /* Append the number */\r
-       for (j = 0; j < i && dst[j] != ' '; j++) {\r
-               if (IsDBCS1(dst[j])) {\r
-                       if (j == i - 1) break;\r
-                       j++;\r
-               }\r
-       }\r
-       do {\r
-               dst[j++] = (i < 8) ? ns[i++] : ' ';\r
-       } while (j < 8);\r
-}\r
-#endif\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Calculate sum of an SFN                                               */\r
-/*-----------------------------------------------------------------------*/\r
-#if _USE_LFN\r
-static\r
-BYTE sum_sfn (\r
-       const BYTE *dir         /* Ptr to directory entry */\r
-)\r
-{\r
-       BYTE sum = 0;\r
-       int n = 11;\r
-\r
-       do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);\r
-       return sum;\r
-}\r
-#endif\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Directory handling - Find an object in the directory                  */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT dir_find (\r
-       DIR *dj                 /* Pointer to the directory object linked to the file name */\r
-)\r
-{\r
-       FRESULT res;\r
-       BYTE c, *dir;\r
-#if _USE_LFN\r
-       BYTE a, ord, sum;\r
-#endif\r
-\r
-       res = dir_seek(dj, 0);                  /* Rewind directory object */\r
-       if (res != FR_OK) return res;\r
-\r
-#if _USE_LFN\r
-       ord = sum = 0xFF;\r
-#endif\r
-       do {\r
-               res = move_window(dj->fs, dj->sect);\r
-               if (res != FR_OK) break;\r
-               dir = dj->dir;                                  /* Ptr to the directory entry of current index */\r
-               c = dir[DIR_Name];\r
-               if (c == 0) { res = FR_NO_FILE; break; }        /* Reached to end of table */\r
-#if _USE_LFN   /* LFN configuration */\r
-               a = dir[DIR_Attr] & AM_MASK;\r
-               if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) {       /* An entry without valid data */\r
-                       ord = 0xFF;\r
-               } else {\r
-                       if (a == AM_LFN) {                      /* An LFN entry is found */\r
-                               if (dj->lfn) {\r
-                                       if (c & 0x40) {         /* Is it start of LFN sequence? */\r
-                                               sum = dir[LDIR_Chksum];\r
-                                               c &= 0xBF; ord = c;     /* LFN start order */\r
-                                               dj->lfn_idx = dj->index;\r
-                                       }\r
-                                       /* Check validity of the LFN entry and compare it with given name */\r
-                                       ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;\r
-                               }\r
-                       } else {                                        /* An SFN entry is found */\r
-                               if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */\r
-                               ord = 0xFF; dj->lfn_idx = 0xFFFF;       /* Reset LFN sequence */\r
-                               if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break;        /* SFN matched? */\r
-                       }\r
-               }\r
-#else          /* Non LFN configuration */\r
-               if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */\r
-                       break;\r
-#endif\r
-               res = dir_next(dj, FALSE);              /* Next entry */\r
-       } while (res == FR_OK);\r
-\r
-       return res;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Read an object from the directory                                     */\r
-/*-----------------------------------------------------------------------*/\r
-#if _FS_MINIMIZE <= 1\r
-static\r
-FRESULT dir_read (\r
-       DIR *dj                 /* Pointer to the directory object that pointing the entry to be read */\r
-)\r
-{\r
-       FRESULT res;\r
-       BYTE c, *dir;\r
-#if _USE_LFN\r
-       BYTE a, ord = 0xFF, sum = 0xFF;\r
-#endif\r
-\r
-       res = FR_NO_FILE;\r
-       while (dj->sect) {\r
-               res = move_window(dj->fs, dj->sect);\r
-               if (res != FR_OK) break;\r
-               dir = dj->dir;                                  /* Ptr to the directory entry of current index */\r
-               c = dir[DIR_Name];\r
-               if (c == 0) { res = FR_NO_FILE; break; }        /* Reached to end of table */\r
-#if _USE_LFN   /* LFN configuration */\r
-               a = dir[DIR_Attr] & AM_MASK;\r
-               if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) {   /* An entry without valid data */\r
-                       ord = 0xFF;\r
-               } else {\r
-                       if (a == AM_LFN) {                      /* An LFN entry is found */\r
-                               if (c & 0x40) {                 /* Is it start of LFN sequence? */\r
-                                       sum = dir[LDIR_Chksum];\r
-                                       c &= 0xBF; ord = c;\r
-                                       dj->lfn_idx = dj->index;\r
-                               }\r
-                               /* Check LFN validity and capture it */\r
-                               ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;\r
-                       } else {                                        /* An SFN entry is found */\r
-                               if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */\r
-                                       dj->lfn_idx = 0xFFFF;           /* It has no LFN. */\r
-                               break;\r
-                       }\r
-               }\r
-#else          /* Non LFN configuration */\r
-               if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL))  /* Is it a valid entry? */\r
-                       break;\r
-#endif\r
-               res = dir_next(dj, FALSE);                              /* Next entry */\r
-               if (res != FR_OK) break;\r
-       }\r
-\r
-       if (res != FR_OK) dj->sect = 0;\r
-\r
-       return res;\r
-}\r
-#endif\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Register an object to the directory                                   */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-static\r
-FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */\r
-       DIR *dj                         /* Target directory with object name to be created */\r
-)\r
-{\r
-       FRESULT res;\r
-       BYTE c, *dir;\r
-#if _USE_LFN   /* LFN configuration */\r
-       WORD n, ne, is;\r
-       BYTE sn[12], *fn, sum;\r
-       WCHAR *lfn;\r
-\r
-\r
-       fn = dj->fn; lfn = dj->lfn;\r
-       mem_cpy(sn, fn, 12);\r
-\r
-       if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME;     /* Cannot create dot entry */\r
-\r
-       if (sn[NS] & NS_LOSS) {                 /* When LFN is out of 8.3 format, generate a numbered name */\r
-               fn[NS] = 0; dj->lfn = NULL;                     /* Find only SFN */\r
-               for (n = 1; n < 100; n++) {\r
-                       gen_numname(fn, sn, lfn, n);    /* Generate a numbered name */\r
-                       res = dir_find(dj);                             /* Check if the name collides with existing SFN */\r
-                       if (res != FR_OK) break;\r
-               }\r
-               if (n == 100) return FR_DENIED;         /* Abort if too many collisions */\r
-               if (res != FR_NO_FILE) return res;      /* Abort if the result is other than 'not collided' */\r
-               fn[NS] = sn[NS]; dj->lfn = lfn;\r
-       }\r
-\r
-       if (sn[NS] & NS_LFN) {                  /* When LFN is to be created, reserve reserve an SFN + LFN entries. */\r
-               for (ne = 0; lfn[ne]; ne++) ;\r
-               ne = (ne + 25) / 13;\r
-       } else {                                                /* Otherwise reserve only an SFN entry. */\r
-               ne = 1;\r
-       }\r
-\r
-       /* Reserve contiguous entries */\r
-       res = dir_seek(dj, 0);\r
-       if (res != FR_OK) return res;\r
-       n = is = 0;\r
-       do {\r
-               res = move_window(dj->fs, dj->sect);\r
-               if (res != FR_OK) break;\r
-               c = *dj->dir;                           /* Check the entry status */\r
-               if (c == 0xE5 || c == 0) {      /* Is it a blank entry? */\r
-                       if (n == 0) is = dj->index;     /* First index of the contigulus entry */\r
-                       if (++n == ne) break;   /* A contiguous entry that requiered count is found */\r
-               } else {\r
-                       n = 0;                                  /* Not a blank entry. Restart to search */\r
-               }\r
-               res = dir_next(dj, TRUE);       /* Next entry with table streach */\r
-       } while (res == FR_OK);\r
-\r
-       if (res == FR_OK && ne > 1) {   /* Initialize LFN entry if needed */\r
-               res = dir_seek(dj, is);\r
-               if (res == FR_OK) {\r
-                       sum = sum_sfn(dj->fn);  /* Sum of the SFN tied to the LFN */\r
-                       ne--;\r
-                       do {                                    /* Store LFN entries in bottom first */\r
-                               res = move_window(dj->fs, dj->sect);\r
-                               if (res != FR_OK) break;\r
-                               fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);\r
-                               dj->fs->wflag = 1;\r
-                               res = dir_next(dj, FALSE);      /* Next entry */\r
-                       } while (res == FR_OK && --ne);\r
-               }\r
-       }\r
-\r
-#else  /* Non LFN configuration */\r
-       res = dir_seek(dj, 0);\r
-       if (res == FR_OK) {\r
-               do {    /* Find a blank entry for the SFN */\r
-                       res = move_window(dj->fs, dj->sect);\r
-                       if (res != FR_OK) break;\r
-                       c = *dj->dir;\r
-                       if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */\r
-                       res = dir_next(dj, TRUE);               /* Next entry with table streach */\r
-               } while (res == FR_OK);\r
-       }\r
-#endif\r
-\r
-       if (res == FR_OK) {             /* Initialize the SFN entry */\r
-               res = move_window(dj->fs, dj->sect);\r
-               if (res == FR_OK) {\r
-                       dir = dj->dir;\r
-                       mem_set(dir, 0, 32);            /* Clean the entry */\r
-                       mem_cpy(dir, dj->fn, 11);       /* Put SFN */\r
-                       dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT);     /* Put NT flag */\r
-                       dj->fs->wflag = 1;\r
-               }\r
-       }\r
-\r
-       return res;\r
-}\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Remove an object from the directory                                   */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY && !_FS_MINIMIZE\r
-static\r
-FRESULT dir_remove (   /* FR_OK: Successful, FR_DISK_ERR: A disk error */\r
-       DIR *dj                         /* Directory object pointing the entry to be removed */\r
-)\r
-{\r
-       FRESULT res;\r
-#if _USE_LFN   /* LFN configuration */\r
-       WORD i;\r
-\r
-       i = dj->index;  /* SFN index */\r
-       res = dir_seek(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx));  /* Goto the SFN or top of the LFN entries */\r
-       if (res == FR_OK) {\r
-               do {\r
-                       res = move_window(dj->fs, dj->sect);\r
-                       if (res != FR_OK) break;\r
-                       *dj->dir = 0xE5;                        /* Mark the entry "deleted" */\r
-                       dj->fs->wflag = 1;\r
-                       if (dj->index >= i) break;      /* When reached SFN, all entries of the object has been deleted. */\r
-                       res = dir_next(dj, FALSE);      /* Next entry */\r
-               } while (res == FR_OK);\r
-               if (res == FR_NO_FILE) res = FR_INT_ERR;\r
-       }\r
-\r
-#else                  /* Non LFN configuration */\r
-       res = dir_seek(dj, dj->index);\r
-       if (res == FR_OK) {\r
-               res = move_window(dj->fs, dj->sect);\r
-               if (res == FR_OK) {\r
-                       *dj->dir = 0xE5;                        /* Mark the entry "deleted" */\r
-                       dj->fs->wflag = 1;\r
-               }\r
-       }\r
-#endif\r
-\r
-       return res;\r
-}\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Pick a segment and create the object name in directory form           */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT create_name (\r
-       DIR *dj,                        /* Pointer to the directory object */\r
-       const XCHAR **path      /* Pointer to pointer to the segment in the path string */\r
-)\r
-{\r
-#ifdef _EXCVT\r
-       static const BYTE cvt[] = _EXCVT;\r
-#endif\r
-\r
-#if _USE_LFN   /* LFN configuration */\r
-       BYTE b, cf;\r
-       WCHAR w, *lfn;\r
-       int i, ni, si, di;\r
-       const XCHAR *p;\r
-\r
-       /* Create LFN in Unicode */\r
-       si = di = 0;\r
-       p = *path;\r
-       lfn = dj->lfn;\r
-       for (;;) {\r
-               w = p[si++];                                    /* Get a character */\r
-               if (w < ' ' || w == '/' || w == '\\') break;    /* Break on end of segment */\r
-               if (di >= _MAX_LFN)                             /* Reject too long name */\r
-                       return FR_INVALID_NAME;\r
-#if !_LFN_UNICODE\r
-               w &= 0xFF;\r
-               if (IsDBCS1(w)) {                               /* If it is a DBC 1st byte */\r
-                       b = p[si++];                            /* Get 2nd byte */\r
-                       if (!IsDBCS2(b))                        /* Reject invalid code for DBC */\r
-                               return FR_INVALID_NAME;\r
-                       w = (w << 8) + b;\r
-               }\r
-               w = ff_convert(w, 1);                   /* Convert OEM to Unicode */\r
-               if (!w) return FR_INVALID_NAME; /* Reject invalid code */\r
-#endif\r
-               if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */\r
-                       return FR_INVALID_NAME;\r
-               lfn[di++] = w;                                  /* Store the Unicode char */\r
-       }\r
-       *path = &p[si];                                         /* Rerurn pointer to the next segment */\r
-       cf = (w < ' ') ? NS_LAST : 0;           /* Set last segment flag if end of path */\r
-#if _FS_RPATH\r
-       if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */\r
-               (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {\r
-               lfn[di] = 0;\r
-               for (i = 0; i < 11; i++)\r
-                       dj->fn[i] = (i < di) ? '.' : ' ';\r
-               dj->fn[i] = cf | NS_DOT;                /* This is a dot entry */\r
-               return FR_OK;\r
-       }\r
-#endif\r
-       while (di) {                                            /* Strip trailing spaces and dots */\r
-               w = lfn[di - 1];\r
-               if (w != ' ' && w != '.') break;\r
-               di--;\r
-       }\r
-       if (!di) return FR_INVALID_NAME;        /* Reject null string */\r
-\r
-       lfn[di] = 0;                                            /* LFN is created */\r
-\r
-       /* Create SFN in directory form */\r
-       mem_set(dj->fn, ' ', 11);\r
-       for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ;  /* Strip leading spaces and dots */\r
-       if (si) cf |= NS_LOSS | NS_LFN;\r
-       while (di && lfn[di - 1] != '.') di--;  /* Find extension (di<=si: no extension) */\r
-\r
-       b = i = 0; ni = 8;\r
-       for (;;) {\r
-               w = lfn[si++];                                  /* Get an LFN char */\r
-               if (!w) break;                                  /* Break on enf of the LFN */\r
-               if (w == ' ' || (w == '.' && si != di)) {       /* Remove spaces and dots */\r
-                       cf |= NS_LOSS | NS_LFN; continue;\r
-               }\r
-\r
-               if (i >= ni || si == di) {              /* Extension or end of SFN */\r
-                       if (ni == 11) {                         /* Long extension */\r
-                               cf |= NS_LOSS | NS_LFN; break;\r
-                       }\r
-                       if (si != di) cf |= NS_LOSS | NS_LFN;   /* Out of 8.3 format */\r
-                       if (si > di) break;                     /* No extension */\r
-                       si = di; i = 8; ni = 11;        /* Enter extension section */\r
-                       b <<= 2; continue;\r
-               }\r
-\r
-               if (w >= 0x80) {                                /* Non ASCII char */\r
-#ifdef _EXCVT\r
-                       w = ff_convert(w, 0);           /* Unicode -> OEM code */\r
-                       if (w) w = cvt[w - 0x80];       /* Convert extended char to upper (SBCS) */\r
-#else\r
-                       w = ff_convert(ff_wtoupper(w), 0);      /* Upper converted Unicode -> OEM code */\r
-#endif\r
-                       cf |= NS_LFN;                           /* Force create LFN entry */\r
-               }\r
-\r
-               if (_DF1S && w >= 0x100) {              /* Double byte char */\r
-                       if (i >= ni - 1) {\r
-                               cf |= NS_LOSS | NS_LFN; i = ni; continue;\r
-                       }\r
-                       dj->fn[i++] = (BYTE)(w >> 8);\r
-               } else {                                                /* Single byte char */\r
-                       if (!w || chk_chr("+,;[=]", w)) {               /* Replace illegal chars for SFN */\r
-                               w = '_'; cf |= NS_LOSS | NS_LFN;        /* Lossy conversion */\r
-                       } else {\r
-                               if (IsUpper(w)) {               /* ASCII large capital */\r
-                                       b |= 2;\r
-                               } else {\r
-                                       if (IsLower(w)) {       /* ASCII small capital */\r
-                                               b |= 1; w -= 0x20;\r
-                                       }\r
-                               }\r
-                       }\r
-               }\r
-               dj->fn[i++] = (BYTE)w;\r
-       }\r
-\r
-       if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05;        /* If the first char collides with deleted mark, replace it with 0x05 */\r
-\r
-       if (ni == 8) b <<= 2;\r
-       if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03)   /* Create LFN entry when there are composite capitals */\r
-               cf |= NS_LFN;\r
-       if (!(cf & NS_LFN)) {                                           /* When LFN is in 8.3 format without extended char, NT flags are created */\r
-               if ((b & 0x03) == 0x01) cf |= NS_EXT;   /* NT flag (Extension has only small capital) */\r
-               if ((b & 0x0C) == 0x04) cf |= NS_BODY;  /* NT flag (Filename has only small capital) */\r
-       }\r
-\r
-       dj->fn[NS] = cf;        /* SFN is created */\r
-\r
-       return FR_OK;\r
-\r
-\r
-#else  /* Non-LFN configuration */\r
-       BYTE b, c, d, *sfn;\r
-       int ni, si, i;\r
-       const char *p;\r
-\r
-       /* Create file name in directory form */\r
-       sfn = dj->fn;\r
-       mem_set(sfn, ' ', 11);\r
-       si = i = b = 0; ni = 8;\r
-       p = *path;\r
-#if _FS_RPATH\r
-       if (p[si] == '.') { /* Is this a dot entry? */\r
-               for (;;) {\r
-                       c = p[si++];\r
-                       if (c != '.' || si >= 3) break;\r
-                       sfn[i++] = c;\r
-               }\r
-               if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;\r
-               *path = &p[si];                                                                 /* Rerurn pointer to the next segment */\r
-               sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT;       /* Set last segment flag if end of path */\r
-               return FR_OK;\r
-       }\r
-#endif\r
-       for (;;) {\r
-               c = p[si++];\r
-               if (c <= ' ' || c == '/' || c == '\\') break;   /* Break on end of segment */\r
-               if (c == '.' || i >= ni) {\r
-                       if (ni != 8 || c != '.') return FR_INVALID_NAME;\r
-                       i = 8; ni = 11;\r
-                       b <<= 2; continue;\r
-               }\r
-               if (c >= 0x80) {                                /* Extended char */\r
-#ifdef _EXCVT\r
-                       c = cvt[c - 0x80];                      /* Convert extend char (SBCS) */\r
-#else\r
-                       b |= 3;                                         /* Eliminate NT flag if ext char is exist */\r
-#if !_DF1S     /* ASCII only cfg */\r
-                       return FR_INVALID_NAME;\r
-#endif\r
-#endif\r
-               }\r
-               if (IsDBCS1(c)) {                               /* DBC 1st byte? */\r
-                       d = p[si++];                            /* Get 2nd byte */\r
-                       if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */\r
-                               return FR_INVALID_NAME;\r
-                       sfn[i++] = c;\r
-                       sfn[i++] = d;\r
-               } else {                                                /* Single byte code */\r
-                       if (chk_chr(" \"*+,[=]|\x7F", c))       /* Reject illegal chrs for SFN */\r
-                               return FR_INVALID_NAME;\r
-                       if (IsUpper(c)) {                       /* ASCII large capital? */\r
-                               b |= 2;\r
-                       } else {\r
-                               if (IsLower(c)) {               /* ASCII small capital? */\r
-                                       b |= 1; c -= 0x20;\r
-                               }\r
-                       }\r
-                       sfn[i++] = c;\r
-               }\r
-       }\r
-       *path = &p[si];                                         /* Rerurn pointer to the next segment */\r
-       c = (c <= ' ') ? NS_LAST : 0;           /* Set last segment flag if end of path */\r
-\r
-       if (!i) return FR_INVALID_NAME;         /* Reject null string */\r
-       if (sfn[0] == 0xE5) sfn[0] = 0x05;      /* When first char collides with 0xE5, replace it with 0x05 */\r
-\r
-       if (ni == 8) b <<= 2;\r
-       if ((b & 0x03) == 0x01) c |= NS_EXT;    /* NT flag (Extension has only small capital) */\r
-       if ((b & 0x0C) == 0x04) c |= NS_BODY;   /* NT flag (Filename has only small capital) */\r
-\r
-       sfn[NS] = c;            /* Store NT flag, File name is created */\r
-\r
-       return FR_OK;\r
-#endif\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Get file information from directory entry                             */\r
-/*-----------------------------------------------------------------------*/\r
-#if _FS_MINIMIZE <= 1\r
-static\r
-void get_fileinfo (            /* No return code */\r
-       DIR *dj,                        /* Pointer to the directory object */\r
-       FILINFO *fno            /* Pointer to the file information to be filled */\r
-)\r
-{\r
-       int i;\r
-       BYTE c, nt, *dir;\r
-       char *p;\r
-\r
-\r
-       p = fno->fname;\r
-       if (dj->sect) {\r
-               dir = dj->dir;\r
-               nt = dir[DIR_NTres];            /* NT flag */\r
-               for (i = 0; i < 8; i++) {       /* Copy name body */\r
-                       c = dir[i];\r
-                       if (c == ' ') break;\r
-                       if (c == 0x05) c = 0xE5;\r
-                       if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;\r
-                       *p++ = c;\r
-               }\r
-               if (dir[8] != ' ') {            /* Copy name extension */\r
-                       *p++ = '.';\r
-                       for (i = 8; i < 11; i++) {\r
-                               c = dir[i];\r
-                               if (c == ' ') break;\r
-                               if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;\r
-                               *p++ = c;\r
-                       }\r
-               }\r
-               fno->fattrib = dir[DIR_Attr];                           /* Attribute */\r
-               fno->fsize = LD_DWORD(dir+DIR_FileSize);        /* Size */\r
-               fno->fdate = LD_WORD(dir+DIR_WrtDate);          /* Date */\r
-               fno->ftime = LD_WORD(dir+DIR_WrtTime);          /* Time */\r
-       }\r
-       *p = 0;\r
-\r
-#if _USE_LFN\r
-       if (fno->lfname) {\r
-               XCHAR *tp = fno->lfname;\r
-               WCHAR w, *lfn;\r
-\r
-               i = 0;\r
-               if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */\r
-                       lfn = dj->lfn;\r
-                       while ((w = *lfn++) != 0) {                     /* Get an LFN char */\r
-#if !_LFN_UNICODE\r
-                               w = ff_convert(w, 0);                   /* Unicode -> OEM conversion */\r
-                               if (!w) { i = 0; break; }               /* Could not convert, no LFN */\r
-                               if (_DF1S && w >= 0x100)                /* Put 1st byte if it is a DBC */\r
-                                       tp[i++] = (XCHAR)(w >> 8);\r
-#endif\r
-                               if (i >= fno->lfsize - 1) { i = 0; break; }     /* Buffer overrun, no LFN */\r
-                               tp[i++] = (XCHAR)w;\r
-                       }\r
-               }\r
-               tp[i] = 0;      /* Terminator */\r
-       }\r
-#endif\r
-}\r
-#endif /* _FS_MINIMIZE <= 1 */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Follow a file path                                                    */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT follow_path (  /* FR_OK(0): successful, !=0: error code */\r
-       DIR *dj,                        /* Directory object to return last directory and found object */\r
-       const XCHAR *path       /* Full-path string to find a file or directory */\r
-)\r
-{\r
-       FRESULT res;\r
-       BYTE *dir, last;\r
-\r
-\r
-       while (!_USE_LFN && *path == ' ') path++;       /* Skip leading spaces */\r
-#if _FS_RPATH\r
-       if (*path == '/' || *path == '\\') { /* There is a heading separator */\r
-               path++; dj->sclust = 0;         /* Strip it and start from the root dir */\r
-       } else {                                                        /* No heading saparator */\r
-               dj->sclust = dj->fs->cdir;      /* Start from the current dir */\r
-       }\r
-#else\r
-       if (*path == '/' || *path == '\\')      /* Strip heading separator if exist */\r
-               path++;\r
-       dj->sclust = 0;                                         /* Start from the root dir */\r
-#endif\r
-\r
-       if ((UINT)*path < ' ') {                        /* Null path means the start directory itself */\r
-               res = dir_seek(dj, 0);\r
-               dj->dir = NULL;\r
-\r
-       } else {                                                        /* Follow path */\r
-               for (;;) {\r
-                       res = create_name(dj, &path);   /* Get a segment */\r
-                       if (res != FR_OK) break;\r
-                       res = dir_find(dj);                             /* Find it */\r
-                       last = *(dj->fn+NS) & NS_LAST;\r
-                       if (res != FR_OK) {                             /* Could not find the object */\r
-                               if (res == FR_NO_FILE && !last)\r
-                                       res = FR_NO_PATH;\r
-                               break;\r
-                       }\r
-                       if (last) break;                                /* Last segment match. Function completed. */\r
-                       dir = dj->dir;                                  /* There is next segment. Follow the sub directory */\r
-                       if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */\r
-                               res = FR_NO_PATH; break;\r
-                       }\r
-                       dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
-               }\r
-       }\r
-\r
-       return res;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Load boot record and check if it is an FAT boot record                */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-BYTE check_fs (        /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */\r
-       FATFS *fs,      /* File system object */\r
-       DWORD sect      /* Sector# (lba) to check if it is an FAT boot record or not */\r
-)\r
-{\r
-       if (disk_read(fs->drive, fs->win, sect, 1) != RES_OK)   /* Load boot record */\r
-               return 3;\r
-       if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55)               /* Check record signature (always placed at offset 510 even if the sector size is >512) */\r
-               return 2;\r
-\r
-       if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */\r
-               return 0;\r
-       if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)\r
-               return 0;\r
-\r
-       return 1;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Make sure that the file system is valid                               */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-\r
-FRESULT chk_mounted (  /* FR_OK(0): successful, !=0: any error occured */\r
-       const XCHAR **path,     /* Pointer to pointer to the path name (drive number) */\r
-       FATFS **rfs,            /* Pointer to pointer to the found file system object */\r
-       BYTE chk_wp                     /* !=0: Check media write protection for write access */\r
-)\r
-{\r
-       BYTE fmt, *tbl;\r
-       UINT vol;\r
-       DSTATUS stat;\r
-       DWORD bsect, fsize, tsect, mclst;\r
-       const XCHAR *p = *path;\r
-       FATFS *fs;\r
-\r
-       /* Get logical drive number from the path name */\r
-       vol = p[0] - '0';                               /* Is there a drive number? */\r
-       if (vol <= 9 && p[1] == ':') {  /* Found a drive number, get and strip it */\r
-               p += 2; *path = p;                      /* Return pointer to the path name */\r
-       } else {                                                /* No drive number is given */\r
-#if _FS_RPATH\r
-               vol = Drive;                            /* Use current drive */\r
-#else\r
-               vol = 0;                                        /* Use drive 0 */\r
-#endif\r
-       }\r
-\r
-       /* Check if the logical drive is valid or not */\r
-       if (vol >= _DRIVES)                     /* Is the drive number valid? */\r
-               return FR_INVALID_DRIVE;\r
-       *rfs = fs = FatFs[vol];                 /* Returen pointer to the corresponding file system object */\r
-       if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */\r
-\r
-       ENTER_FF(fs);                                   /* Lock file system */\r
-\r
-       if (fs->fs_type) {                              /* If the logical drive has been mounted */\r
-               stat = disk_status(fs->drive);\r
-               if (!(stat & STA_NOINIT)) {     /* and the physical drive is kept initialized (has not been changed), */\r
-#if !_FS_READONLY\r
-                       if (chk_wp && (stat & STA_PROTECT))     /* Check write protection if needed */\r
-                               return FR_WRITE_PROTECTED;\r
-#endif\r
-                       return FR_OK;                   /* The file system object is valid */\r
-               }\r
-       }\r
-\r
-       /* The logical drive must be mounted. Following code attempts to mount the volume */\r
-\r
-       fs->fs_type = 0;                                        /* Clear the file system object */\r
-       fs->drive = (BYTE)LD2PD(vol);           /* Bind the logical drive and a physical drive */\r
-       stat = disk_initialize(fs->drive);      /* Initialize low level disk I/O layer */\r
-       if (stat & STA_NOINIT)                          /* Check if the drive is ready */\r
-               return FR_NOT_READY;\r
-#if _MAX_SS != 512                                             /* Get disk sector size if needed */\r
-       if (disk_ioctl(fs->drive, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)\r
-               return FR_NO_FILESYSTEM;\r
-#endif\r
-#if !_FS_READONLY\r
-       if (chk_wp && (stat & STA_PROTECT))     /* Check disk write protection if needed */\r
-               return FR_WRITE_PROTECTED;\r
-#endif\r
-       /* Search FAT partition on the drive */\r
-       fmt = check_fs(fs, bsect = 0);          /* Check sector 0 as an SFD format */\r
-       if (fmt == 1) {                                         /* Not an FAT boot record, it may be patitioned */\r
-               /* Check a partition listed in top of the partition table */\r
-               tbl = &fs->win[MBR_Table + LD2PT(vol) * 16];    /* Partition table */\r
-               if (tbl[4]) {                                                                   /* Is the partition existing? */\r
-                       bsect = LD_DWORD(&tbl[8]);                                      /* Partition offset in LBA */\r
-                       fmt = check_fs(fs, bsect);                                      /* Check the partition */\r
-               }\r
-       }\r
-       if (fmt == 3) return FR_DISK_ERR;\r
-       if (fmt || LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs))   /* No valid FAT patition is found */\r
-               return FR_NO_FILESYSTEM;\r
-\r
-       /* Initialize the file system object */\r
-       fsize = LD_WORD(fs->win+BPB_FATSz16);                           /* Number of sectors per FAT */\r
-       if (!fsize) fsize = LD_DWORD(fs->win+BPB_FATSz32);\r
-       fs->sects_fat = fsize;\r
-       fs->n_fats = fs->win[BPB_NumFATs];                                      /* Number of FAT copies */\r
-       fsize *= fs->n_fats;                                                            /* (Number of sectors in FAT area) */\r
-       fs->fatbase = bsect + LD_WORD(fs->win+BPB_RsvdSecCnt); /* FAT start sector (lba) */\r
-       fs->csize = fs->win[BPB_SecPerClus];                            /* Number of sectors per cluster */\r
-       fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt);        /* Nmuber of root directory entries */\r
-       tsect = LD_WORD(fs->win+BPB_TotSec16);                          /* Number of sectors on the volume */\r
-       if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);\r
-       fs->max_clust = mclst = (tsect                                          /* Last cluster# + 1 (Number of clusters + 2) */\r
-               - LD_WORD(fs->win+BPB_RsvdSecCnt) - fsize - fs->n_rootdir / (SS(fs)/32)\r
-               ) / fs->csize + 2;\r
-\r
-       fmt = FS_FAT12;                                                                         /* Determine the FAT sub type */\r
-       if (mclst >= 0xFF7) fmt = FS_FAT16;                                     /* Number of clusters >= 0xFF5 */\r
-       if (mclst >= 0xFFF7) fmt = FS_FAT32;                            /* Number of clusters >= 0xFFF5 */\r
-\r
-       if (fmt == FS_FAT32)\r
-               fs->dirbase = LD_DWORD(fs->win+BPB_RootClus);   /* Root directory start cluster */\r
-       else\r
-               fs->dirbase = fs->fatbase + fsize;                              /* Root directory start sector (lba) */\r
-       fs->database = fs->fatbase + fsize + fs->n_rootdir / (SS(fs)/32);       /* Data start sector (lba) */\r
-\r
-#if !_FS_READONLY\r
-       /* Initialize allocation information */\r
-       fs->free_clust = 0xFFFFFFFF;\r
-       fs->wflag = 0;\r
-       /* Get fsinfo if needed */\r
-       if (fmt == FS_FAT32) {\r
-               fs->fsi_flag = 0;\r
-               fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);\r
-               if (disk_read(fs->drive, fs->win, fs->fsi_sector, 1) == RES_OK &&\r
-                       LD_WORD(fs->win+BS_55AA) == 0xAA55 &&\r
-                       LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&\r
-                       LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {\r
-                       fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);\r
-                       fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);\r
-               }\r
-       }\r
-#endif\r
-       fs->fs_type = fmt;              /* FAT sub-type */\r
-       fs->winsect = 0;                /* Invalidate sector cache */\r
-#if _FS_RPATH\r
-       fs->cdir = 0;                   /* Current directory (root dir) */\r
-#endif\r
-       fs->id = ++Fsid;                /* File system mount ID */\r
-\r
-       return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Check if the file/dir object is valid or not                          */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT validate (     /* FR_OK(0): The object is valid, !=0: Invalid */\r
-       FATFS *fs,              /* Pointer to the file system object */\r
-       WORD id                 /* Member id of the target object to be checked */\r
-)\r
-{\r
-       if (!fs || !fs->fs_type || fs->id != id)\r
-               return FR_INVALID_OBJECT;\r
-\r
-       ENTER_FF(fs);           /* Lock file system */\r
-\r
-       if (disk_status(fs->drive) & STA_NOINIT)\r
-               return FR_NOT_READY;\r
-\r
-       return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*--------------------------------------------------------------------------\r
-\r
-   Public Functions\r
-\r
---------------------------------------------------------------------------*/\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Mount/Unmount a Locical Drive                                         */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_mount (\r
-       BYTE vol,               /* Logical drive number to be mounted/unmounted */\r
-       FATFS *fs               /* Pointer to new file system object (NULL for unmount)*/\r
-)\r
-{\r
-       FATFS *rfs;\r
-\r
-\r
-       if (vol >= _DRIVES)                             /* Check if the drive number is valid */\r
-               return FR_INVALID_DRIVE;\r
-       rfs = FatFs[vol];                               /* Get current fs object */\r
-\r
-       if (rfs) {\r
-#if _FS_REENTRANT                                      /* Discard sync object of the current volume */\r
-               if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;\r
-#endif\r
-               rfs->fs_type = 0;                       /* Clear old fs object */\r
-       }\r
-\r
-       if (fs) {\r
-               fs->fs_type = 0;                        /* Clear new fs object */\r
-#if _FS_REENTRANT                                      /* Create sync object for the new volume */\r
-               if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;\r
-#endif\r
-       }\r
-       FatFs[vol] = fs;                                /* Register new fs object */\r
-\r
-       return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Open or Create a File                                                 */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_open (\r
-       FIL *fp,                        /* Pointer to the blank file object */\r
-       const XCHAR *path,      /* Pointer to the file name */\r
-       BYTE mode                       /* Access mode and file open mode flags */\r
-)\r
-{\r
-       FRESULT res;\r
-       DIR dj;\r
-       NAMEBUF(sfn, lfn);\r
-       BYTE *dir;\r
-\r
-\r
-       fp->fs = NULL;          /* Clear file object */\r
-#if !_FS_READONLY\r
-       mode &= (FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW);\r
-       res = chk_mounted(&path, &dj.fs, (BYTE)(mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)));\r
-#else\r
-       mode &= FA_READ;\r
-       res = chk_mounted(&path, &dj.fs, 0);\r
-#endif\r
-       if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-       INITBUF(dj, sfn, lfn);\r
-       res = follow_path(&dj, path);   /* Follow the file path */\r
-\r
-#if !_FS_READONLY\r
-       /* Create or Open a file */\r
-       if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {\r
-               DWORD ps, cl;\r
-\r
-               if (res != FR_OK) {                     /* No file, create new */\r
-                       if (res == FR_NO_FILE)  /* There is no file to open, create a new entry */\r
-                               res = dir_register(&dj);\r
-                       if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-                       mode |= FA_CREATE_ALWAYS;\r
-                       dir = dj.dir;                   /* Created entry (SFN entry) */\r
-               }\r
-               else {                                          /* Any object is already existing */\r
-                       if (mode & FA_CREATE_NEW)                       /* Cannot create new */\r
-                               LEAVE_FF(dj.fs, FR_EXIST);\r
-                       dir = dj.dir;\r
-                       if (!dir || (dir[DIR_Attr] & (AM_RDO | AM_DIR)))        /* Cannot overwrite it (R/O or DIR) */\r
-                               LEAVE_FF(dj.fs, FR_DENIED);\r
-                       if (mode & FA_CREATE_ALWAYS) {          /* Resize it to zero on over write mode */\r
-                               cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);    /* Get start cluster */\r
-                               ST_WORD(dir+DIR_FstClusHI, 0);  /* cluster = 0 */\r
-                               ST_WORD(dir+DIR_FstClusLO, 0);\r
-                               ST_DWORD(dir+DIR_FileSize, 0);  /* size = 0 */\r
-                               dj.fs->wflag = 1;\r
-                               ps = dj.fs->winsect;                    /* Remove the cluster chain */\r
-                               if (cl) {\r
-                                       res = remove_chain(dj.fs, cl);\r
-                                       if (res) LEAVE_FF(dj.fs, res);\r
-                                       dj.fs->last_clust = cl - 1;     /* Reuse the cluster hole */\r
-                               }\r
-                               res = move_window(dj.fs, ps);\r
-                               if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-                       }\r
-               }\r
-               if (mode & FA_CREATE_ALWAYS) {\r
-                       dir[DIR_Attr] = 0;                                      /* Reset attribute */\r
-                       ps = get_fattime();\r
-                       ST_DWORD(dir+DIR_CrtTime, ps);          /* Created time */\r
-                       dj.fs->wflag = 1;\r
-                       mode |= FA__WRITTEN;                            /* Set file changed flag */\r
-               }\r
-       }\r
-       /* Open an existing file */\r
-       else {\r
-#endif /* !_FS_READONLY */\r
-               if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */\r
-               dir = dj.dir;\r
-               if (!dir || (dir[DIR_Attr] & AM_DIR))   /* It is a directory */\r
-                       LEAVE_FF(dj.fs, FR_NO_FILE);\r
-#if !_FS_READONLY\r
-               if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */\r
-                       LEAVE_FF(dj.fs, FR_DENIED);\r
-       }\r
-       fp->dir_sect = dj.fs->winsect;          /* Pointer to the directory entry */\r
-       fp->dir_ptr = dj.dir;\r
-#endif\r
-       fp->flag = mode;                                        /* File access mode */\r
-       fp->org_clust =                                         /* File start cluster */\r
-               ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
-       fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */\r
-       fp->fptr = 0; fp->csect = 255;          /* File pointer */\r
-       fp->dsect = 0;\r
-       fp->fs = dj.fs; fp->id = dj.fs->id;     /* Owner file system object of the file */\r
-\r
-       LEAVE_FF(dj.fs, FR_OK);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Read File                                                             */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_read (\r
-       FIL *fp,                /* Pointer to the file object */\r
-       void *buff,             /* Pointer to data buffer */\r
-       UINT btr,               /* Number of bytes to read */\r
-       UINT *br                /* Pointer to number of bytes read */\r
-)\r
-{\r
-       FRESULT res;\r
-       DWORD clst, sect, remain;\r
-       UINT rcnt, cc;\r
-       BYTE *rbuff = buff;\r
-\r
-\r
-       *br = 0;        /* Initialize bytes read */\r
-\r
-       res = validate(fp->fs, fp->id);                                 /* Check validity of the object */\r
-       if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
-       if (fp->flag & FA__ERROR)                                               /* Check abort flag */\r
-               LEAVE_FF(fp->fs, FR_INT_ERR);\r
-       if (!(fp->flag & FA_READ))                                              /* Check access mode */\r
-               LEAVE_FF(fp->fs, FR_DENIED);\r
-       remain = fp->fsize - fp->fptr;\r
-       if (btr > remain) btr = (UINT)remain;                   /* Truncate btr by remaining bytes */\r
-\r
-       for ( ;  btr;                                                                   /* Repeat until all data transferred */\r
-               rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {\r
-               if ((fp->fptr % SS(fp->fs)) == 0) {                     /* On the sector boundary? */\r
-                       if (fp->csect >= fp->fs->csize) {               /* On the cluster boundary? */\r
-                               clst = (fp->fptr == 0) ?                        /* On the top of the file? */\r
-                                       fp->org_clust : get_fat(fp->fs, fp->curr_clust);\r
-                               if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);\r
-                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
-                               fp->curr_clust = clst;                          /* Update current cluster */\r
-                               fp->csect = 0;                                          /* Reset sector offset in the cluster */\r
-                       }\r
-                       sect = clust2sect(fp->fs, fp->curr_clust);      /* Get current sector */\r
-                       if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
-                       sect += fp->csect;\r
-                       cc = btr / SS(fp->fs);                                  /* When remaining bytes >= sector size, */\r
-                       if (cc) {                                                               /* Read maximum contiguous sectors directly */\r
-                               if (fp->csect + cc > fp->fs->csize)     /* Clip at cluster boundary */\r
-                                       cc = fp->fs->csize - fp->csect;\r
-                               if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)\r
-                                       ABORT(fp->fs, FR_DISK_ERR);\r
-#if !_FS_READONLY && _FS_MINIMIZE <= 2\r
-#if _FS_TINY\r
-                               if (fp->fs->wflag && fp->fs->winsect - sect < cc)               /* Replace one of the read sectors with cached data if it contains a dirty sector */\r
-                                       mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));\r
-#else\r
-                               if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)    /* Replace one of the read sectors with cached data if it contains a dirty sector */\r
-                                       mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));\r
-#endif\r
-#endif\r
-                               fp->csect += (BYTE)cc;                          /* Next sector address in the cluster */\r
-                               rcnt = SS(fp->fs) * cc;                         /* Number of bytes transferred */\r
-                               continue;\r
-                       }\r
-#if !_FS_TINY\r
-#if !_FS_READONLY\r
-                       if (fp->flag & FA__DIRTY) {                     /* Write sector I/O buffer if needed */\r
-                               if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)\r
-                                       ABORT(fp->fs, FR_DISK_ERR);\r
-                               fp->flag &= ~FA__DIRTY;\r
-                       }\r
-#endif\r
-                       if (fp->dsect != sect) {                        /* Fill sector buffer with file data */\r
-                               if (disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)\r
-                                       ABORT(fp->fs, FR_DISK_ERR);\r
-                       }\r
-#endif\r
-                       fp->dsect = sect;\r
-                       fp->csect++;                                                    /* Next sector address in the cluster */\r
-               }\r
-               rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));    /* Get partial sector data from sector buffer */\r
-               if (rcnt > btr) rcnt = btr;\r
-#if _FS_TINY\r
-               if (move_window(fp->fs, fp->dsect))                     /* Move sector window */\r
-                       ABORT(fp->fs, FR_DISK_ERR);\r
-               mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt);      /* Pick partial sector */\r
-#else\r
-               mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt);  /* Pick partial sector */\r
-#endif\r
-       }\r
-\r
-       LEAVE_FF(fp->fs, FR_OK);\r
-}\r
-\r
-\r
-\r
-\r
-#if !_FS_READONLY\r
-/*-----------------------------------------------------------------------*/\r
-/* Write File                                                            */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_write (\r
-       FIL *fp,                        /* Pointer to the file object */\r
-       const void *buff,       /* Pointer to the data to be written */\r
-       UINT btw,                       /* Number of bytes to write */\r
-       UINT *bw                        /* Pointer to number of bytes written */\r
-)\r
-{\r
-       FRESULT res;\r
-       DWORD clst, sect;\r
-       UINT wcnt, cc;\r
-       const BYTE *wbuff = buff;\r
-\r
-\r
-       *bw = 0;        /* Initialize bytes written */\r
-\r
-       res = validate(fp->fs, fp->id);                                 /* Check validity of the object */\r
-       if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
-       if (fp->flag & FA__ERROR)                                               /* Check abort flag */\r
-               LEAVE_FF(fp->fs, FR_INT_ERR);\r
-       if (!(fp->flag & FA_WRITE))                                             /* Check access mode */\r
-               LEAVE_FF(fp->fs, FR_DENIED);\r
-       if (fp->fsize + btw < fp->fsize) btw = 0;               /* File size cannot reach 4GB */\r
-\r
-       for ( ;  btw;                                                                   /* Repeat until all data transferred */\r
-               wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {\r
-               if ((fp->fptr % SS(fp->fs)) == 0) {                     /* On the sector boundary? */\r
-                       if (fp->csect >= fp->fs->csize) {               /* On the cluster boundary? */\r
-                               if (fp->fptr == 0) {                            /* On the top of the file? */\r
-                                       clst = fp->org_clust;                   /* Follow from the origin */\r
-                                       if (clst == 0)                                  /* When there is no cluster chain, */\r
-                                               fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */\r
-                               } else {                                                        /* Middle or end of the file */\r
-                                       clst = create_chain(fp->fs, fp->curr_clust);                    /* Follow or streach cluster chain */\r
-                               }\r
-                               if (clst == 0) break;                           /* Could not allocate a new cluster (disk full) */\r
-                               if (clst == 1) ABORT(fp->fs, FR_INT_ERR);\r
-                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
-                               fp->curr_clust = clst;                          /* Update current cluster */\r
-                               fp->csect = 0;                                          /* Reset sector address in the cluster */\r
-                       }\r
-#if _FS_TINY\r
-                       if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0))     /* Write back data buffer prior to following direct transfer */\r
-                               ABORT(fp->fs, FR_DISK_ERR);\r
-#else\r
-                       if (fp->flag & FA__DIRTY) {             /* Write back data buffer prior to following direct transfer */\r
-                               if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)\r
-                                       ABORT(fp->fs, FR_DISK_ERR);\r
-                               fp->flag &= ~FA__DIRTY;\r
-                       }\r
-#endif\r
-                       sect = clust2sect(fp->fs, fp->curr_clust);      /* Get current sector */\r
-                       if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
-                       sect += fp->csect;\r
-                       cc = btw / SS(fp->fs);                                  /* When remaining bytes >= sector size, */\r
-                       if (cc) {                                                               /* Write maximum contiguous sectors directly */\r
-                               if (fp->csect + cc > fp->fs->csize)     /* Clip at cluster boundary */\r
-                                       cc = fp->fs->csize - fp->csect;\r
-                               if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)\r
-                                       ABORT(fp->fs, FR_DISK_ERR);\r
-#if _FS_TINY\r
-                               if (fp->fs->winsect - sect < cc) {      /* Refill sector cache if it gets dirty by the direct write */\r
-                                       mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));\r
-                                       fp->fs->wflag = 0;\r
-                               }\r
-#else\r
-                               if (fp->dsect - sect < cc) {            /* Refill sector cache if it gets dirty by the direct write */\r
-                                       mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));\r
-                                       fp->flag &= ~FA__DIRTY;\r
-                               }\r
-#endif\r
-                               fp->csect += (BYTE)cc;                          /* Next sector address in the cluster */\r
-                               wcnt = SS(fp->fs) * cc;                         /* Number of bytes transferred */\r
-                               continue;\r
-                       }\r
-#if _FS_TINY\r
-                       if (fp->fptr >= fp->fsize) {                    /* Avoid silly buffer filling at growing edge */\r
-                               if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);\r
-                               fp->fs->winsect = sect;\r
-                       }\r
-#else\r
-                       if (fp->dsect != sect) {                                /* Fill sector buffer with file data */\r
-                               if (fp->fptr < fp->fsize &&\r
-                                       disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)\r
-                                               ABORT(fp->fs, FR_DISK_ERR);\r
-                       }\r
-#endif\r
-                       fp->dsect = sect;\r
-                       fp->csect++;                                                    /* Next sector address in the cluster */\r
-               }\r
-               wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));    /* Put partial sector into file I/O buffer */\r
-               if (wcnt > btw) wcnt = btw;\r
-#if _FS_TINY\r
-               if (move_window(fp->fs, fp->dsect))                     /* Move sector window */\r
-                       ABORT(fp->fs, FR_DISK_ERR);\r
-               mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt);      /* Fit partial sector */\r
-               fp->fs->wflag = 1;\r
-#else\r
-               mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt);  /* Fit partial sector */\r
-               fp->flag |= FA__DIRTY;\r
-#endif\r
-       }\r
-\r
-       if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */\r
-       fp->flag |= FA__WRITTEN;                                                /* Set file changed flag */\r
-\r
-       LEAVE_FF(fp->fs, FR_OK);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Synchronize the File Object                                           */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_sync (\r
-       FIL *fp         /* Pointer to the file object */\r
-)\r
-{\r
-       FRESULT res;\r
-       DWORD tim;\r
-       BYTE *dir;\r
-\r
-\r
-       res = validate(fp->fs, fp->id);         /* Check validity of the object */\r
-       if (res == FR_OK) {\r
-               if (fp->flag & FA__WRITTEN) {   /* Has the file been written? */\r
-#if !_FS_TINY  /* Write-back dirty buffer */\r
-                       if (fp->flag & FA__DIRTY) {\r
-                               if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)\r
-                                       LEAVE_FF(fp->fs, FR_DISK_ERR);\r
-                               fp->flag &= ~FA__DIRTY;\r
-                       }\r
-#endif\r
-                       /* Update the directory entry */\r
-                       res = move_window(fp->fs, fp->dir_sect);\r
-                       if (res == FR_OK) {\r
-                               dir = fp->dir_ptr;\r
-                               dir[DIR_Attr] |= AM_ARC;                                        /* Set archive bit */\r
-                               ST_DWORD(dir+DIR_FileSize, fp->fsize);          /* Update file size */\r
-                               ST_WORD(dir+DIR_FstClusLO, fp->org_clust);      /* Update start cluster */\r
-                               ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);\r
-                               tim = get_fattime();                    /* Updated time */\r
-                               ST_DWORD(dir+DIR_WrtTime, tim);\r
-                               fp->flag &= ~FA__WRITTEN;\r
-                               fp->fs->wflag = 1;\r
-                               res = sync(fp->fs);\r
-                       }\r
-               }\r
-       }\r
-\r
-       LEAVE_FF(fp->fs, res);\r
-}\r
-\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Close File                                                            */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_close (\r
-       FIL *fp         /* Pointer to the file object to be closed */\r
-)\r
-{\r
-       FRESULT res;\r
-\r
-\r
-#if _FS_READONLY\r
-       res = validate(fp->fs, fp->id);\r
-       if (res == FR_OK) fp->fs = NULL;\r
-       LEAVE_FF(fp->fs, res);\r
-#else\r
-       res = f_sync(fp);\r
-       if (res == FR_OK) fp->fs = NULL;\r
-       return res;\r
-#endif\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Change Current Drive/Directory                                        */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-#if _FS_RPATH\r
-\r
-FRESULT f_chdrive (\r
-       BYTE drv                /* Drive number */\r
-)\r
-{\r
-       if (drv >= _DRIVES) return FR_INVALID_DRIVE;\r
-\r
-       Drive = drv;\r
-\r
-       return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-FRESULT f_chdir (\r
-       const XCHAR *path       /* Pointer to the directory path */\r
-)\r
-{\r
-       FRESULT res;\r
-       DIR dj;\r
-       NAMEBUF(sfn, lfn);\r
-       BYTE *dir;\r
-\r
-\r
-       res = chk_mounted(&path, &dj.fs, 0);\r
-       if (res == FR_OK) {\r
-               INITBUF(dj, sfn, lfn);\r
-               res = follow_path(&dj, path);           /* Follow the file path */\r
-               if (res == FR_OK) {                                     /* Follow completed */\r
-                       dir = dj.dir;                                   /* Pointer to the entry */\r
-                       if (!dir) {\r
-                               dj.fs->cdir = 0;                        /* No entry (root dir) */\r
-                       } else {\r
-                               if (dir[DIR_Attr] & AM_DIR)     /* Reached to the dir */\r
-                                       dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
-                               else\r
-                                       res = FR_NO_PATH;               /* Could not reach the dir (it is a file) */\r
-                       }\r
-               }\r
-               if (res == FR_NO_FILE) res = FR_NO_PATH;\r
-       }\r
-\r
-       LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-#endif\r
-\r
-\r
-\r
-#if _FS_MINIMIZE <= 2\r
-/*-----------------------------------------------------------------------*/\r
-/* Seek File R/W Pointer                                                 */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_lseek (\r
-       FIL *fp,                /* Pointer to the file object */\r
-       DWORD ofs               /* File pointer from top of file */\r
-)\r
-{\r
-       FRESULT res;\r
-       DWORD clst, bcs, nsect, ifptr;\r
-\r
-\r
-       res = validate(fp->fs, fp->id);         /* Check validity of the object */\r
-       if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
-       if (fp->flag & FA__ERROR)                       /* Check abort flag */\r
-               LEAVE_FF(fp->fs, FR_INT_ERR);\r
-       if (ofs > fp->fsize                                     /* In read-only mode, clip offset with the file size */\r
-#if !_FS_READONLY\r
-                && !(fp->flag & FA_WRITE)\r
-#endif\r
-               ) ofs = fp->fsize;\r
-\r
-       ifptr = fp->fptr;\r
-       fp->fptr = nsect = 0; fp->csect = 255;\r
-       if (ofs > 0) {\r
-               bcs = (DWORD)fp->fs->csize * SS(fp->fs);        /* Cluster size (byte) */\r
-               if (ifptr > 0 &&\r
-                       (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */\r
-                       fp->fptr = (ifptr - 1) & ~(bcs - 1);    /* start from the current cluster */\r
-                       ofs -= fp->fptr;\r
-                       clst = fp->curr_clust;\r
-               } else {                                                                        /* When seek to back cluster, */\r
-                       clst = fp->org_clust;                                   /* start from the first cluster */\r
-#if !_FS_READONLY\r
-                       if (clst == 0) {                                                /* If no cluster chain, create a new chain */\r
-                               clst = create_chain(fp->fs, 0);\r
-                               if (clst == 1) ABORT(fp->fs, FR_INT_ERR);\r
-                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
-                               fp->org_clust = clst;\r
-                       }\r
-#endif\r
-                       fp->curr_clust = clst;\r
-               }\r
-               if (clst != 0) {\r
-                       while (ofs > bcs) {                                             /* Cluster following loop */\r
-#if !_FS_READONLY\r
-                               if (fp->flag & FA_WRITE) {                      /* Check if in write mode or not */\r
-                                       clst = create_chain(fp->fs, clst);      /* Force streached if in write mode */\r
-                                       if (clst == 0) {                                /* When disk gets full, clip file size */\r
-                                               ofs = bcs; break;\r
-                                       }\r
-                               } else\r
-#endif\r
-                                       clst = get_fat(fp->fs, clst);   /* Follow cluster chain if not in write mode */\r
-                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
-                               if (clst <= 1 || clst >= fp->fs->max_clust) ABORT(fp->fs, FR_INT_ERR);\r
-                               fp->curr_clust = clst;\r
-                               fp->fptr += bcs;\r
-                               ofs -= bcs;\r
-                       }\r
-                       fp->fptr += ofs;\r
-                       fp->csect = (BYTE)(ofs / SS(fp->fs));   /* Sector offset in the cluster */\r
-                       if (ofs % SS(fp->fs)) {\r
-                               nsect = clust2sect(fp->fs, clst);       /* Current sector */\r
-                               if (!nsect) ABORT(fp->fs, FR_INT_ERR);\r
-                               nsect += fp->csect;\r
-                               fp->csect++;\r
-                       }\r
-               }\r
-       }\r
-       if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {\r
-#if !_FS_TINY\r
-#if !_FS_READONLY\r
-               if (fp->flag & FA__DIRTY) {                     /* Write-back dirty buffer if needed */\r
-                       if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)\r
-                               ABORT(fp->fs, FR_DISK_ERR);\r
-                       fp->flag &= ~FA__DIRTY;\r
-               }\r
-#endif\r
-               if (disk_read(fp->fs->drive, fp->buf, nsect, 1) != RES_OK)\r
-                       ABORT(fp->fs, FR_DISK_ERR);\r
-#endif\r
-               fp->dsect = nsect;\r
-       }\r
-#if !_FS_READONLY\r
-       if (fp->fptr > fp->fsize) {                     /* Set changed flag if the file size is extended */\r
-               fp->fsize = fp->fptr;\r
-               fp->flag |= FA__WRITTEN;\r
-       }\r
-#endif\r
-\r
-       LEAVE_FF(fp->fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-#if _FS_MINIMIZE <= 1\r
-/*-----------------------------------------------------------------------*/\r
-/* Create a Directroy Object                                             */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_opendir (\r
-       DIR *dj,                        /* Pointer to directory object to create */\r
-       const XCHAR *path       /* Pointer to the directory path */\r
-)\r
-{\r
-       FRESULT res;\r
-       NAMEBUF(sfn, lfn);\r
-       BYTE *dir;\r
-\r
-\r
-       res = chk_mounted(&path, &dj->fs, 0);\r
-       if (res == FR_OK) {\r
-               INITBUF((*dj), sfn, lfn);\r
-               res = follow_path(dj, path);                    /* Follow the path to the directory */\r
-               if (res == FR_OK) {                                             /* Follow completed */\r
-                       dir = dj->dir;\r
-                       if (dir) {                                                      /* It is not the root dir */\r
-                               if (dir[DIR_Attr] & AM_DIR) {   /* The object is a directory */\r
-                                       dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
-                               } else {                                                /* The object is not a directory */\r
-                                       res = FR_NO_PATH;\r
-                               }\r
-                       }\r
-                       if (res == FR_OK) {\r
-                               dj->id = dj->fs->id;\r
-                               res = dir_seek(dj, 0);                  /* Rewind dir */\r
-                       }\r
-               }\r
-               if (res == FR_NO_FILE) res = FR_NO_PATH;\r
-       }\r
-\r
-       LEAVE_FF(dj->fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Read Directory Entry in Sequense                                      */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_readdir (\r
-       DIR *dj,                        /* Pointer to the open directory object */\r
-       FILINFO *fno            /* Pointer to file information to return */\r
-)\r
-{\r
-       FRESULT res;\r
-       NAMEBUF(sfn, lfn);\r
-\r
-\r
-       res = validate(dj->fs, dj->id);                 /* Check validity of the object */\r
-       if (res == FR_OK) {\r
-               INITBUF((*dj), sfn, lfn);\r
-               if (!fno) {\r
-                       res = dir_seek(dj, 0);\r
-               } else {\r
-                       res = dir_read(dj);\r
-                       if (res == FR_NO_FILE) {\r
-                               dj->sect = 0;\r
-                               res = FR_OK;\r
-                       }\r
-                       if (res == FR_OK) {                             /* A valid entry is found */\r
-                               get_fileinfo(dj, fno);          /* Get the object information */\r
-                               res = dir_next(dj, FALSE);      /* Increment index for next */\r
-                               if (res == FR_NO_FILE) {\r
-                                       dj->sect = 0;\r
-                                       res = FR_OK;\r
-                               }\r
-                       }\r
-               }\r
-       }\r
-\r
-       LEAVE_FF(dj->fs, res);\r
-}\r
-\r
-\r
-\r
-#if _FS_MINIMIZE == 0\r
-/*-----------------------------------------------------------------------*/\r
-/* Get File Status                                                       */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_stat (\r
-       const XCHAR *path,      /* Pointer to the file path */\r
-       FILINFO *fno            /* Pointer to file information to return */\r
-)\r
-{\r
-       FRESULT res;\r
-       DIR dj;\r
-       NAMEBUF(sfn, lfn);\r
-\r
-\r
-       res = chk_mounted(&path, &dj.fs, 0);\r
-       if (res == FR_OK) {\r
-               INITBUF(dj, sfn, lfn);\r
-               res = follow_path(&dj, path);   /* Follow the file path */\r
-               if (res == FR_OK) {                             /* Follwo completed */\r
-                       if (dj.dir)     /* Found an object */\r
-                               get_fileinfo(&dj, fno);\r
-                       else            /* It is root dir */\r
-                               res = FR_INVALID_NAME;\r
-               }\r
-       }\r
-\r
-       LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-#if !_FS_READONLY\r
-/*-----------------------------------------------------------------------*/\r
-/* Get Number of Free Clusters                                           */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_getfree (\r
-       const XCHAR *path,      /* Pointer to the logical drive number (root dir) */\r
-       DWORD *nclst,           /* Pointer to the variable to return number of free clusters */\r
-       FATFS **fatfs           /* Pointer to pointer to corresponding file system object to return */\r
-)\r
-{\r
-       FRESULT res;\r
-       DWORD n, clst, sect, stat;\r
-       UINT i;\r
-       BYTE fat, *p;\r
-\r
-\r
-       /* Get drive number */\r
-       res = chk_mounted(&path, fatfs, 0);\r
-       if (res != FR_OK) LEAVE_FF(*fatfs, res);\r
-\r
-       /* If number of free cluster is valid, return it without cluster scan. */\r
-       if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {\r
-               *nclst = (*fatfs)->free_clust;\r
-               LEAVE_FF(*fatfs, FR_OK);\r
-       }\r
-\r
-       /* Get number of free clusters */\r
-       fat = (*fatfs)->fs_type;\r
-       n = 0;\r
-       if (fat == FS_FAT12) {\r
-               clst = 2;\r
-               do {\r
-                       stat = get_fat(*fatfs, clst);\r
-                       if (stat == 0xFFFFFFFF) LEAVE_FF(*fatfs, FR_DISK_ERR);\r
-                       if (stat == 1) LEAVE_FF(*fatfs, FR_INT_ERR);\r
-                       if (stat == 0) n++;\r
-               } while (++clst < (*fatfs)->max_clust);\r
-       } else {\r
-               clst = (*fatfs)->max_clust;\r
-               sect = (*fatfs)->fatbase;\r
-               i = 0; p = 0;\r
-               do {\r
-                       if (!i) {\r
-                               res = move_window(*fatfs, sect++);\r
-                               if (res != FR_OK)\r
-                                       LEAVE_FF(*fatfs, res);\r
-                               p = (*fatfs)->win;\r
-                               i = SS(*fatfs);\r
-                       }\r
-                       if (fat == FS_FAT16) {\r
-                               if (LD_WORD(p) == 0) n++;\r
-                               p += 2; i -= 2;\r
-                       } else {\r
-                               if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;\r
-                               p += 4; i -= 4;\r
-                       }\r
-               } while (--clst);\r
-       }\r
-       (*fatfs)->free_clust = n;\r
-       if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;\r
-       *nclst = n;\r
-\r
-       LEAVE_FF(*fatfs, FR_OK);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Truncate File                                                         */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_truncate (\r
-       FIL *fp         /* Pointer to the file object */\r
-)\r
-{\r
-       FRESULT res;\r
-       DWORD ncl;\r
-\r
-\r
-       res = validate(fp->fs, fp->id);         /* Check validity of the object */\r
-       if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
-       if (fp->flag & FA__ERROR)                       /* Check abort flag */\r
-               LEAVE_FF(fp->fs, FR_INT_ERR);\r
-       if (!(fp->flag & FA_WRITE))                     /* Check access mode */\r
-               LEAVE_FF(fp->fs, FR_DENIED);\r
-\r
-       if (fp->fsize > fp->fptr) {\r
-               fp->fsize = fp->fptr;   /* Set file size to current R/W point */\r
-               fp->flag |= FA__WRITTEN;\r
-               if (fp->fptr == 0) {    /* When set file size to zero, remove entire cluster chain */\r
-                       res = remove_chain(fp->fs, fp->org_clust);\r
-                       fp->org_clust = 0;\r
-               } else {                                /* When truncate a part of the file, remove remaining clusters */\r
-                       ncl = get_fat(fp->fs, fp->curr_clust);\r
-                       res = FR_OK;\r
-                       if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;\r
-                       if (ncl == 1) res = FR_INT_ERR;\r
-                       if (res == FR_OK && ncl < fp->fs->max_clust) {\r
-                               res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);\r
-                               if (res == FR_OK) res = remove_chain(fp->fs, ncl);\r
-                       }\r
-               }\r
-       }\r
-       if (res != FR_OK) fp->flag |= FA__ERROR;\r
-\r
-       LEAVE_FF(fp->fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Delete a File or Directory                                            */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_unlink (\r
-       const XCHAR *path               /* Pointer to the file or directory path */\r
-)\r
-{\r
-       FRESULT res;\r
-       DIR dj, sdj;\r
-       NAMEBUF(sfn, lfn);\r
-       BYTE *dir;\r
-       DWORD dclst;\r
-\r
-\r
-       res = chk_mounted(&path, &dj.fs, 1);\r
-       if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-\r
-       INITBUF(dj, sfn, lfn);\r
-       res = follow_path(&dj, path);                   /* Follow the file path */\r
-       if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))\r
-               res = FR_INVALID_NAME;\r
-       if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */\r
-\r
-       dir = dj.dir;\r
-       if (!dir)                                                               /* Is it the root directory? */\r
-               LEAVE_FF(dj.fs, FR_INVALID_NAME);\r
-       if (dir[DIR_Attr] & AM_RDO)                             /* Is it a R/O object? */\r
-               LEAVE_FF(dj.fs, FR_DENIED);\r
-       dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
-\r
-       if (dir[DIR_Attr] & AM_DIR) {                   /* It is a sub-directory */\r
-               if (dclst < 2) LEAVE_FF(dj.fs, FR_INT_ERR);\r
-               mem_cpy(&sdj, &dj, sizeof(DIR));        /* Check if the sub-dir is empty or not */\r
-               sdj.sclust = dclst;\r
-               res = dir_seek(&sdj, 2);\r
-               if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-               res = dir_read(&sdj);\r
-               if (res == FR_OK) res = FR_DENIED;      /* Not empty sub-dir */\r
-               if (res != FR_NO_FILE) LEAVE_FF(dj.fs, res);\r
-       }\r
-\r
-       res = dir_remove(&dj);                                  /* Remove directory entry */\r
-       if (res == FR_OK) {\r
-               if (dclst)\r
-                       res = remove_chain(dj.fs, dclst);       /* Remove the cluster chain */\r
-               if (res == FR_OK) res = sync(dj.fs);\r
-       }\r
-\r
-       LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Create a Directory                                                    */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_mkdir (\r
-       const XCHAR *path               /* Pointer to the directory path */\r
-)\r
-{\r
-       FRESULT res;\r
-       DIR dj;\r
-       NAMEBUF(sfn, lfn);\r
-       BYTE *dir, n;\r
-       DWORD dsect, dclst, pclst, tim;\r
-\r
-\r
-       res = chk_mounted(&path, &dj.fs, 1);\r
-       if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-\r
-       INITBUF(dj, sfn, lfn);\r
-       res = follow_path(&dj, path);                   /* Follow the file path */\r
-       if (res == FR_OK) res = FR_EXIST;               /* Any file or directory is already existing */\r
-       if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))\r
-               res = FR_INVALID_NAME;\r
-       if (res != FR_NO_FILE)                                  /* Any error occured */\r
-               LEAVE_FF(dj.fs, res);\r
-\r
-       dclst = create_chain(dj.fs, 0);                 /* Allocate a new cluster for new directory table */\r
-       res = FR_OK;\r
-       if (dclst == 0) res = FR_DENIED;\r
-       if (dclst == 1) res = FR_INT_ERR;\r
-       if (dclst == 0xFFFFFFFF) res = FR_DISK_ERR;\r
-       if (res == FR_OK)\r
-               res = move_window(dj.fs, 0);\r
-       if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-       dsect = clust2sect(dj.fs, dclst);\r
-\r
-       dir = dj.fs->win;                                               /* Initialize the new directory table */\r
-       mem_set(dir, 0, SS(dj.fs));\r
-       mem_set(dir+DIR_Name, ' ', 8+3);                /* Create "." entry */\r
-       dir[DIR_Name] = '.';\r
-       dir[DIR_Attr] = AM_DIR;\r
-       tim = get_fattime();\r
-       ST_DWORD(dir+DIR_WrtTime, tim);\r
-       ST_WORD(dir+DIR_FstClusLO, dclst);\r
-       ST_WORD(dir+DIR_FstClusHI, dclst >> 16);\r
-       mem_cpy(dir+32, dir, 32);                       /* Create ".." entry */\r
-       dir[33] = '.';\r
-       pclst = dj.sclust;\r
-       if (dj.fs->fs_type == FS_FAT32 && pclst == dj.fs->dirbase)\r
-               pclst = 0;\r
-       ST_WORD(dir+32+DIR_FstClusLO, pclst);\r
-       ST_WORD(dir+32+DIR_FstClusHI, pclst >> 16);\r
-       for (n = 0; n < dj.fs->csize; n++) {    /* Write dot entries and clear left sectors */\r
-               dj.fs->winsect = dsect++;\r
-               dj.fs->wflag = 1;\r
-               res = move_window(dj.fs, 0);\r
-               if (res) LEAVE_FF(dj.fs, res);\r
-               mem_set(dir, 0, SS(dj.fs));\r
-       }\r
-\r
-       res = dir_register(&dj);\r
-       if (res != FR_OK) {\r
-               remove_chain(dj.fs, dclst);\r
-       } else {\r
-               dir = dj.dir;\r
-               dir[DIR_Attr] = AM_DIR;                                 /* Attribute */\r
-               ST_DWORD(dir+DIR_WrtTime, tim);                 /* Crated time */\r
-               ST_WORD(dir+DIR_FstClusLO, dclst);              /* Table start cluster */\r
-               ST_WORD(dir+DIR_FstClusHI, dclst >> 16);\r
-               dj.fs->wflag = 1;\r
-               res = sync(dj.fs);\r
-       }\r
-\r
-       LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Change File Attribute                                                 */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_chmod (\r
-       const XCHAR *path,      /* Pointer to the file path */\r
-       BYTE value,                     /* Attribute bits */\r
-       BYTE mask                       /* Attribute mask to change */\r
-)\r
-{\r
-       FRESULT res;\r
-       DIR dj;\r
-       NAMEBUF(sfn, lfn);\r
-       BYTE *dir;\r
-\r
-\r
-       res = chk_mounted(&path, &dj.fs, 1);\r
-       if (res == FR_OK) {\r
-               INITBUF(dj, sfn, lfn);\r
-               res = follow_path(&dj, path);           /* Follow the file path */\r
-               if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))\r
-                       res = FR_INVALID_NAME;\r
-               if (res == FR_OK) {\r
-                       dir = dj.dir;\r
-                       if (!dir) {                                             /* Is it a root directory? */\r
-                               res = FR_INVALID_NAME;\r
-                       } else {                                                /* File or sub directory */\r
-                               mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC;    /* Valid attribute mask */\r
-                               dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */\r
-                               dj.fs->wflag = 1;\r
-                               res = sync(dj.fs);\r
-                       }\r
-               }\r
-       }\r
-\r
-       LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Change Timestamp                                                      */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_utime (\r
-       const XCHAR *path,      /* Pointer to the file/directory name */\r
-       const FILINFO *fno      /* Pointer to the timestamp to be set */\r
-)\r
-{\r
-       FRESULT res;\r
-       DIR dj;\r
-       NAMEBUF(sfn, lfn);\r
-       BYTE *dir;\r
-\r
-\r
-       res = chk_mounted(&path, &dj.fs, 1);\r
-       if (res == FR_OK) {\r
-               INITBUF(dj, sfn, lfn);\r
-               res = follow_path(&dj, path);   /* Follow the file path */\r
-               if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))\r
-                       res = FR_INVALID_NAME;\r
-               if (res == FR_OK) {\r
-                       dir = dj.dir;\r
-                       if (!dir) {                             /* Root directory */\r
-                               res = FR_INVALID_NAME;\r
-                       } else {                                /* File or sub-directory */\r
-                               ST_WORD(dir+DIR_WrtTime, fno->ftime);\r
-                               ST_WORD(dir+DIR_WrtDate, fno->fdate);\r
-                               dj.fs->wflag = 1;\r
-                               res = sync(dj.fs);\r
-                       }\r
-               }\r
-       }\r
-\r
-       LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Rename File/Directory                                                 */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_rename (\r
-       const XCHAR *path_old,  /* Pointer to the old name */\r
-       const XCHAR *path_new   /* Pointer to the new name */\r
-)\r
-{\r
-       FRESULT res;\r
-       DIR dj_old, dj_new;\r
-       NAMEBUF(sfn, lfn);\r
-       BYTE buf[21], *dir;\r
-       DWORD dw;\r
-\r
-\r
-       INITBUF(dj_old, sfn, lfn);\r
-       res = chk_mounted(&path_old, &dj_old.fs, 1);\r
-       if (res == FR_OK) {\r
-               dj_new.fs = dj_old.fs;\r
-               res = follow_path(&dj_old, path_old);   /* Check old object */\r
-               if (_FS_RPATH && res == FR_OK && (dj_old.fn[NS] & NS_DOT))\r
-                       res = FR_INVALID_NAME;\r
-       }\r
-       if (res != FR_OK) LEAVE_FF(dj_old.fs, res);     /* The old object is not found */\r
-\r
-       if (!dj_old.dir) LEAVE_FF(dj_old.fs, FR_NO_FILE);       /* Is root dir? */\r
-       mem_cpy(buf, dj_old.dir+DIR_Attr, 21);          /* Save the object information */\r
-\r
-       mem_cpy(&dj_new, &dj_old, sizeof(DIR));\r
-       res = follow_path(&dj_new, path_new);           /* Check new object */\r
-       if (res == FR_OK) res = FR_EXIST;                       /* The new object name is already existing */\r
-       if (res == FR_NO_FILE) {                                        /* Is it a valid path and no name collision? */\r
-               res = dir_register(&dj_new);                    /* Register the new object */\r
-               if (res == FR_OK) {\r
-                       dir = dj_new.dir;                                       /* Copy object information into new entry */\r
-                       mem_cpy(dir+13, buf+2, 19);\r
-                       dir[DIR_Attr] = buf[0] | AM_ARC;\r
-                       dj_old.fs->wflag = 1;\r
-                       if (dir[DIR_Attr] & AM_DIR) {           /* Update .. entry in the directory if needed */\r
-                               dw = clust2sect(dj_new.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));\r
-                               if (!dw) {\r
-                                       res = FR_INT_ERR;\r
-                               } else {\r
-                                       res = move_window(dj_new.fs, dw);\r
-                                       dir = dj_new.fs->win+32;\r
-                                       if (res == FR_OK && dir[1] == '.') {\r
-                                               dw = (dj_new.fs->fs_type == FS_FAT32 && dj_new.sclust == dj_new.fs->dirbase) ? 0 : dj_new.sclust;\r
-                                               ST_WORD(dir+DIR_FstClusLO, dw);\r
-                                               ST_WORD(dir+DIR_FstClusHI, dw >> 16);\r
-                                               dj_new.fs->wflag = 1;\r
-                                       }\r
-                               }\r
-                       }\r
-                       if (res == FR_OK) {\r
-                               res = dir_remove(&dj_old);                      /* Remove old entry */\r
-                               if (res == FR_OK)\r
-                                       res = sync(dj_old.fs);\r
-                       }\r
-               }\r
-       }\r
-\r
-       LEAVE_FF(dj_old.fs, res);\r
-}\r
-\r
-#endif /* !_FS_READONLY */\r
-#endif /* _FS_MINIMIZE == 0 */\r
-#endif /* _FS_MINIMIZE <= 1 */\r
-#endif /* _FS_MINIMIZE <= 2 */\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Forward data to the stream directly (Available on only _FS_TINY cfg)  */\r
-/*-----------------------------------------------------------------------*/\r
-#if _USE_FORWARD && _FS_TINY\r
-\r
-FRESULT f_forward (\r
-       FIL *fp,                                                /* Pointer to the file object */\r
-       UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */\r
-       UINT btr,                                               /* Number of bytes to forward */\r
-       UINT *bf                                                /* Pointer to number of bytes forwarded */\r
-)\r
-{\r
-       FRESULT res;\r
-       DWORD remain, clst, sect;\r
-       UINT rcnt;\r
-\r
-\r
-       *bf = 0;\r
-\r
-       res = validate(fp->fs, fp->id);                                 /* Check validity of the object */\r
-       if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
-       if (fp->flag & FA__ERROR)                                               /* Check error flag */\r
-               LEAVE_FF(fp->fs, FR_INT_ERR);\r
-       if (!(fp->flag & FA_READ))                                              /* Check access mode */\r
-               LEAVE_FF(fp->fs, FR_DENIED);\r
-\r
-       remain = fp->fsize - fp->fptr;\r
-       if (btr > remain) btr = (UINT)remain;                   /* Truncate btr by remaining bytes */\r
-\r
-       for ( ;  btr && (*func)(NULL, 0);                               /* Repeat until all data transferred or stream becomes busy */\r
-               fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {\r
-               if ((fp->fptr % SS(fp->fs)) == 0) {                     /* On the sector boundary? */\r
-                       if (fp->csect >= fp->fs->csize) {               /* On the cluster boundary? */\r
-                               clst = (fp->fptr == 0) ?                        /* On the top of the file? */\r
-                                       fp->org_clust : get_fat(fp->fs, fp->curr_clust);\r
-                               if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);\r
-                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
-                               fp->curr_clust = clst;                          /* Update current cluster */\r
-                               fp->csect = 0;                                          /* Reset sector address in the cluster */\r
-                       }\r
-                       fp->csect++;                                                    /* Next sector address in the cluster */\r
-               }\r
-               sect = clust2sect(fp->fs, fp->curr_clust);      /* Get current data sector */\r
-               if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
-               sect += fp->csect - 1;\r
-               if (move_window(fp->fs, sect))                          /* Move sector window */\r
-                       ABORT(fp->fs, FR_DISK_ERR);\r
-               fp->dsect = sect;\r
-               rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs));      /* Forward data from sector window */\r
-               if (rcnt > btr) rcnt = btr;\r
-               rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);\r
-               if (!rcnt) ABORT(fp->fs, FR_INT_ERR);\r
-       }\r
-\r
-       LEAVE_FF(fp->fs, FR_OK);\r
-}\r
-#endif /* _USE_FORWARD */\r
-\r
-\r
-\r
-#if _USE_MKFS && !_FS_READONLY\r
-/*-----------------------------------------------------------------------*/\r
-/* Create File System on the Drive                                       */\r
-/*-----------------------------------------------------------------------*/\r
-#define N_ROOTDIR      512                     /* Multiple of 32 and <= 2048 */\r
-#define N_FATS         1                       /* 1 or 2 */\r
-#define MAX_SECTOR     131072000UL     /* Maximum partition size */\r
-#define MIN_SECTOR     2000UL          /* Minimum partition size */\r
-\r
-\r
-FRESULT f_mkfs (\r
-       BYTE drv,                       /* Logical drive number */\r
-       BYTE partition,         /* Partitioning rule 0:FDISK, 1:SFD */\r
-       WORD allocsize          /* Allocation unit size [bytes] */\r
-)\r
-{\r
-       static const DWORD sstbl[] = { 2048000, 1024000, 512000, 256000, 128000, 64000, 32000, 16000, 8000, 4000,   0 };\r
-       static const WORD cstbl[] =  {   32768,   16384,   8192,   4096,   2048, 16384,  8192,  4096, 2048, 1024, 512 };\r
-       BYTE fmt, m, *tbl;\r
-       DWORD b_part, b_fat, b_dir, b_data;             /* Area offset (LBA) */\r
-       DWORD n_part, n_rsv, n_fat, n_dir;              /* Area size */\r
-       DWORD n_clst, d, n;\r
-       WORD as;\r
-       FATFS *fs;\r
-       DSTATUS stat;\r
-\r
-\r
-       /* Check validity of the parameters */\r
-       if (drv >= _DRIVES) return FR_INVALID_DRIVE;\r
-       if (partition >= 2) return FR_MKFS_ABORTED;\r
-\r
-       /* Check mounted drive and clear work area */\r
-       fs = FatFs[drv];\r
-       if (!fs) return FR_NOT_ENABLED;\r
-       fs->fs_type = 0;\r
-       drv = LD2PD(drv);\r
-\r
-       /* Get disk statics */\r
-       stat = disk_initialize(drv);\r
-       if (stat & STA_NOINIT) return FR_NOT_READY;\r
-       if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;\r
-#if _MAX_SS != 512                                             /* Get disk sector size */\r
-       if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK\r
-               || SS(fs) > _MAX_SS)\r
-               return FR_MKFS_ABORTED;\r
-#endif\r
-       if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)\r
-               return FR_MKFS_ABORTED;\r
-       if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;\r
-       b_part = (!partition) ? 63 : 0;         /* Boot sector */\r
-       n_part -= b_part;\r
-       for (d = 512; d <= 32768U && d != allocsize; d <<= 1) ; /* Check validity of the allocation unit size */\r
-       if (d != allocsize) allocsize = 0;\r
-       if (!allocsize) {                                       /* Auto selection of cluster size */\r
-               d = n_part;\r
-               for (as = SS(fs); as > 512U; as >>= 1) d >>= 1;\r
-               for (n = 0; d < sstbl[n]; n++) ;\r
-               allocsize = cstbl[n];\r
-       }\r
-       if (allocsize < SS(fs)) allocsize = SS(fs);\r
-\r
-       allocsize /= SS(fs);            /* Number of sectors per cluster */\r
-\r
-       /* Pre-compute number of clusters and FAT type */\r
-       n_clst = n_part / allocsize;\r
-       fmt = FS_FAT12;\r
-       if (n_clst >= 0xFF5) fmt = FS_FAT16;\r
-       if (n_clst >= 0xFFF5) fmt = FS_FAT32;\r
-\r
-       /* Determine offset and size of FAT structure */\r
-       switch (fmt) {\r
-       case FS_FAT12:\r
-               n_fat = ((n_clst * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);\r
-               n_rsv = 1 + partition;\r
-               n_dir = N_ROOTDIR * 32 / SS(fs);\r
-               break;\r
-       case FS_FAT16:\r
-               n_fat = ((n_clst * 2) + 4 + SS(fs) - 1) / SS(fs);\r
-               n_rsv = 1 + partition;\r
-               n_dir = N_ROOTDIR * 32 / SS(fs);\r
-               break;\r
-       default:\r
-               n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);\r
-               n_rsv = 33 - partition;\r
-               n_dir = 0;\r
-       }\r
-       b_fat = b_part + n_rsv;                 /* FATs start sector */\r
-       b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */\r
-       b_data = b_dir + n_dir;                 /* Data start sector */\r
-\r
-       /* Align data start sector to erase block boundary (for flash memory media) */\r
-       if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_MKFS_ABORTED;\r
-       n = (b_data + n - 1) & ~(n - 1);\r
-       n_fat += (n - b_data) / N_FATS;\r
-       /* b_dir and b_data are no longer used below */\r
-\r
-       /* Determine number of cluster and final check of validity of the FAT type */\r
-       n_clst = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;\r
-       if (   (fmt == FS_FAT16 && n_clst < 0xFF5)\r
-               || (fmt == FS_FAT32 && n_clst < 0xFFF5))\r
-               return FR_MKFS_ABORTED;\r
-\r
-       /* Create partition table if needed */\r
-       if (!partition) {\r
-               DWORD n_disk = b_part + n_part;\r
-\r
-               mem_set(fs->win, 0, SS(fs));\r
-               tbl = fs->win+MBR_Table;\r
-               ST_DWORD(tbl, 0x00010180);              /* Partition start in CHS */\r
-               if (n_disk < 63UL * 255 * 1024) {       /* Partition end in CHS */\r
-                       n_disk = n_disk / 63 / 255;\r
-                       tbl[7] = (BYTE)n_disk;\r
-                       tbl[6] = (BYTE)((n_disk >> 2) | 63);\r
-               } else {\r
-                       ST_WORD(&tbl[6], 0xFFFF);\r
-               }\r
-               tbl[5] = 254;\r
-               if (fmt != FS_FAT32)                    /* System ID */\r
-                       tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06;\r
-               else\r
-                       tbl[4] = 0x0c;\r
-               ST_DWORD(tbl+8, 63);                    /* Partition start in LBA */\r
-               ST_DWORD(tbl+12, n_part);               /* Partition size in LBA */\r
-               ST_WORD(tbl+64, 0xAA55);                /* Signature */\r
-               if (disk_write(drv, fs->win, 0, 1) != RES_OK)\r
-                       return FR_DISK_ERR;\r
-               partition = 0xF8;\r
-       } else {\r
-               partition = 0xF0;\r
-       }\r
-\r
-       /* Create boot record */\r
-       tbl = fs->win;                                                          /* Clear buffer */\r
-       mem_set(tbl, 0, SS(fs));\r
-       ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB);                     /* Boot code (jmp $, nop) */\r
-       ST_WORD(tbl+BPB_BytsPerSec, SS(fs));            /* Sector size */\r
-       tbl[BPB_SecPerClus] = (BYTE)allocsize;          /* Sectors per cluster */\r
-       ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv);                     /* Reserved sectors */\r
-       tbl[BPB_NumFATs] = N_FATS;                                      /* Number of FATs */\r
-       ST_WORD(tbl+BPB_RootEntCnt, SS(fs) / 32 * n_dir); /* Number of rootdir entries */\r
-       if (n_part < 0x10000) {                                         /* Number of total sectors */\r
-               ST_WORD(tbl+BPB_TotSec16, n_part);\r
-       } else {\r
-               ST_DWORD(tbl+BPB_TotSec32, n_part);\r
-       }\r
-       tbl[BPB_Media] = partition;                                     /* Media descripter */\r
-       ST_WORD(tbl+BPB_SecPerTrk, 63);                         /* Number of sectors per track */\r
-       ST_WORD(tbl+BPB_NumHeads, 255);                         /* Number of heads */\r
-       ST_DWORD(tbl+BPB_HiddSec, b_part);                      /* Hidden sectors */\r
-       n = get_fattime();                                                      /* Use current time as a VSN */\r
-       if (fmt != FS_FAT32) {\r
-               ST_DWORD(tbl+BS_VolID, n);                              /* Volume serial number */\r
-               ST_WORD(tbl+BPB_FATSz16, n_fat);                /* Number of secters per FAT */\r
-               tbl[BS_DrvNum] = 0x80;                                  /* Drive number */\r
-               tbl[BS_BootSig] = 0x29;                                 /* Extended boot signature */\r
-               mem_cpy(tbl+BS_VolLab, "NO NAME    FAT     ", 19);      /* Volume lavel, FAT signature */\r
-       } else {\r
-               ST_DWORD(tbl+BS_VolID32, n);                    /* Volume serial number */\r
-               ST_DWORD(tbl+BPB_FATSz32, n_fat);               /* Number of secters per FAT */\r
-               ST_DWORD(tbl+BPB_RootClus, 2);                  /* Root directory cluster (2) */\r
-               ST_WORD(tbl+BPB_FSInfo, 1);                             /* FSInfo record offset (bs+1) */\r
-               ST_WORD(tbl+BPB_BkBootSec, 6);                  /* Backup boot record offset (bs+6) */\r
-               tbl[BS_DrvNum32] = 0x80;                                /* Drive number */\r
-               tbl[BS_BootSig32] = 0x29;                               /* Extended boot signature */\r
-               mem_cpy(tbl+BS_VolLab32, "NO NAME    FAT32   ", 19);    /* Volume lavel, FAT signature */\r
-       }\r
-       ST_WORD(tbl+BS_55AA, 0xAA55);                           /* Signature */\r
-       if (SS(fs) > 512U) {\r
-               ST_WORD(tbl+SS(fs)-2, 0xAA55);\r
-       }\r
-       if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)\r
-               return FR_DISK_ERR;\r
-       if (fmt == FS_FAT32)\r
-               disk_write(drv, tbl, b_part+6, 1);\r
-\r
-       /* Initialize FAT area */\r
-       for (m = 0; m < N_FATS; m++) {\r
-               mem_set(tbl, 0, SS(fs));                /* 1st sector of the FAT  */\r
-               if (fmt != FS_FAT32) {\r
-                       n = (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;\r
-                       n |= partition;\r
-                       ST_DWORD(tbl, n);                               /* Reserve cluster #0-1 (FAT12/16) */\r
-               } else {\r
-                       ST_DWORD(tbl+0, 0xFFFFFFF8);    /* Reserve cluster #0-1 (FAT32) */\r
-                       ST_DWORD(tbl+4, 0xFFFFFFFF);\r
-                       ST_DWORD(tbl+8, 0x0FFFFFFF);    /* Reserve cluster #2 for root dir */\r
-               }\r
-               if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)\r
-                       return FR_DISK_ERR;\r
-               mem_set(tbl, 0, SS(fs));                /* Following FAT entries are filled by zero */\r
-               for (n = 1; n < n_fat; n++) {\r
-                       if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)\r
-                               return FR_DISK_ERR;\r
-               }\r
-       }\r
-\r
-       /* Initialize Root directory */\r
-       m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);\r
-       do {\r
-               if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)\r
-                       return FR_DISK_ERR;\r
-       } while (--m);\r
-\r
-       /* Create FSInfo record if needed */\r
-       if (fmt == FS_FAT32) {\r
-               ST_WORD(tbl+BS_55AA, 0xAA55);\r
-               ST_DWORD(tbl+FSI_LeadSig, 0x41615252);\r
-               ST_DWORD(tbl+FSI_StrucSig, 0x61417272);\r
-               ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);\r
-               ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);\r
-               disk_write(drv, tbl, b_part+1, 1);\r
-               disk_write(drv, tbl, b_part+7, 1);\r
-       }\r
-\r
-       return (disk_ioctl(drv, CTRL_SYNC, (void*)NULL) == RES_OK) ? FR_OK : FR_DISK_ERR;\r
-}\r
-\r
-#endif /* _USE_MKFS && !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-#if _USE_STRFUNC\r
-/*-----------------------------------------------------------------------*/\r
-/* Get a string from the file                                            */\r
-/*-----------------------------------------------------------------------*/\r
-char* f_gets (\r
-       char* buff,     /* Pointer to the string buffer to read */\r
-       int len,        /* Size of string buffer */\r
-       FIL* fil        /* Pointer to the file object */\r
-)\r
-{\r
-       int i = 0;\r
-       char *p = buff;\r
-       UINT rc;\r
-\r
-\r
-       while (i < len - 1) {                   /* Read bytes until buffer gets filled */\r
-               f_read(fil, p, 1, &rc);\r
-               if (rc != 1) break;                     /* Break when no data to read */\r
-#if _USE_STRFUNC >= 2\r
-               if (*p == '\r') continue;       /* Strip '\r' */\r
-#endif\r
-               i++;\r
-               if (*p++ == '\n') break;        /* Break when reached end of line */\r
-       }\r
-       *p = 0;\r
-       return i ? buff : NULL;                 /* When no data read (eof or error), return with error. */\r
-}\r
-\r
-\r
-\r
-#if !_FS_READONLY\r
-#include <stdarg.h>\r
-/*-----------------------------------------------------------------------*/\r
-/* Put a character to the file                                           */\r
-/*-----------------------------------------------------------------------*/\r
-int f_putc (\r
-       int chr,        /* A character to be output */\r
-       FIL* fil        /* Ponter to the file object */\r
-)\r
-{\r
-       UINT bw;\r
-       char c;\r
-\r
-\r
-#if _USE_STRFUNC >= 2\r
-       if (chr == '\n') f_putc ('\r', fil);    /* LF -> CRLF conversion */\r
-#endif\r
-       if (!fil) {     /* Special value may be used to switch the destination to any other device */\r
-       /*      put_console(chr);       */\r
-               return chr;\r
-       }\r
-       c = (char)chr;\r
-       f_write(fil, &c, 1, &bw);       /* Write a byte to the file */\r
-       return bw ? chr : EOF;          /* Return the result */\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Put a string to the file                                              */\r
-/*-----------------------------------------------------------------------*/\r
-int f_puts (\r
-       const char* str,        /* Pointer to the string to be output */\r
-       FIL* fil                        /* Pointer to the file object */\r
-)\r
-{\r
-       int n;\r
-\r
-\r
-       for (n = 0; *str; str++, n++) {\r
-               if (f_putc(*str, fil) == EOF) return EOF;\r
-       }\r
-       return n;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Put a formatted string to the file                                    */\r
-/*-----------------------------------------------------------------------*/\r
-int f_printf (\r
-       FIL* fil,                       /* Pointer to the file object */\r
-       const char* str,        /* Pointer to the format string */\r
-       ...                                     /* Optional arguments... */\r
-)\r
-{\r
-       va_list arp;\r
-       UCHAR c, f, r;\r
-       ULONG val;\r
-       char s[16];\r
-       int i, w, res, cc;\r
-\r
-\r
-       va_start(arp, str);\r
-\r
-       for (cc = res = 0; cc != EOF; res += cc) {\r
-               c = *str++;\r
-               if (c == 0) break;                      /* End of string */\r
-               if (c != '%') {                         /* Non escape cahracter */\r
-                       cc = f_putc(c, fil);\r
-                       if (cc != EOF) cc = 1;\r
-                       continue;\r
-               }\r
-               w = f = 0;\r
-               c = *str++;\r
-               if (c == '0') {                         /* Flag: '0' padding */\r
-                       f = 1; c = *str++;\r
-               }\r
-               while (c >= '0' && c <= '9') {  /* Precision */\r
-                       w = w * 10 + (c - '0');\r
-                       c = *str++;\r
-               }\r
-               if (c == 'l') {                         /* Prefix: Size is long int */\r
-                       f |= 2; c = *str++;\r
-               }\r
-               if (c == 's') {                         /* Type is string */\r
-                       cc = f_puts(va_arg(arp, char*), fil);\r
-                       continue;\r
-               }\r
-               if (c == 'c') {                         /* Type is character */\r
-                       cc = f_putc(va_arg(arp, int), fil);\r
-                       if (cc != EOF) cc = 1;\r
-                       continue;\r
-               }\r
-               r = 0;\r
-               if (c == 'd') r = 10;           /* Type is signed decimal */\r
-               if (c == 'u') r = 10;           /* Type is unsigned decimal */\r
-               if (c == 'X') r = 16;           /* Type is unsigned hexdecimal */\r
-               if (r == 0) break;                      /* Unknown type */\r
-               if (f & 2) {                            /* Get the value */\r
-                       val = (ULONG)va_arg(arp, long);\r
-               } else {\r
-                       val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);\r
-               }\r
-               /* Put numeral string */\r
-               if (c == 'd') {\r
-                       if (val & 0x80000000) {\r
-                               val = 0 - val;\r
-                               f |= 4;\r
-                       }\r
-               }\r
-               i = sizeof(s) - 1; s[i] = 0;\r
-               do {\r
-                       c = (UCHAR)(val % r + '0');\r
-                       if (c > '9') c += 7;\r
-                       s[--i] = c;\r
-                       val /= r;\r
-               } while (i && val);\r
-               if (i && (f & 4)) s[--i] = '-';\r
-               w = sizeof(s) - 1 - w;\r
-               while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';\r
-               cc = f_puts(&s[i], fil);\r
-       }\r
-\r
-       va_end(arp);\r
-       return (cc == EOF) ? cc : res;\r
-}\r
-\r
-#endif /* !_FS_READONLY */\r
-#endif /* _USE_STRFUNC */\r
+/*----------------------------------------------------------------------------/
+/  FatFs - FAT file system module  R0.07e                    (C)ChaN, 2010
+/-----------------------------------------------------------------------------/
+/ FatFs module is a generic FAT file system module for small embedded systems.
+/ This is a free software that opened for education, research and commercial
+/ developments under license policy of following trems.
+/
+/  Copyright (C) 2010, ChaN, all right reserved.
+/
+/ * The FatFs module is a free software and there is NO WARRANTY.
+/ * No restriction on use. You can use, modify and redistribute it for
+/   personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
+/ * Redistributions of source code must retain the above copyright notice.
+/
+/-----------------------------------------------------------------------------/
+/ Feb 26,'06 R0.00  Prototype.
+/
+/ Apr 29,'06 R0.01  First stable version.
+/
+/ Jun 01,'06 R0.02  Added FAT12 support.
+/                   Removed unbuffered mode.
+/                   Fixed a problem on small (<32M) patition.
+/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
+/
+/ Sep 22,'06 R0.03  Added f_rename().
+/                   Changed option _FS_MINIMUM to _FS_MINIMIZE.
+/ Dec 11,'06 R0.03a Improved cluster scan algolithm to write files fast.
+/                   Fixed f_mkdir() creates incorrect directory on FAT32.
+/
+/ Feb 04,'07 R0.04  Supported multiple drive system.
+/                   Changed some interfaces for multiple drive system.
+/                   Changed f_mountdrv() to f_mount().
+/                   Added f_mkfs().
+/ Apr 01,'07 R0.04a Supported multiple partitions on a plysical drive.
+/                   Added a capability of extending file size to f_lseek().
+/                   Added minimization level 3.
+/                   Fixed an endian sensitive code in f_mkfs().
+/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
+/                   Added FSInfo support.
+/                   Fixed DBCS name can result FR_INVALID_NAME.
+/                   Fixed short seek (<= csize) collapses the file object.
+/
+/ Aug 25,'07 R0.05  Changed arguments of f_read(), f_write() and f_mkfs().
+/                   Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
+/                   Fixed f_mkdir() on FAT32 creates incorrect directory.
+/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
+/                   Fixed off by one error at FAT sub-type determination.
+/                   Fixed btr in f_read() can be mistruncated.
+/                   Fixed cached sector is not flushed when create and close
+/                   without write.
+/
+/ Apr 01,'08 R0.06  Added fputc(), fputs(), fprintf() and fgets().
+/                   Improved performance of f_lseek() on moving to the same
+/                   or following cluster.
+/
+/ Apr 01,'09 R0.07  Merged Tiny-FatFs as a buffer configuration option.
+/                   Added long file name support.
+/                   Added multiple code page support.
+/                   Added re-entrancy for multitask operation.
+/                   Added auto cluster size selection to f_mkfs().
+/                   Added rewind option to f_readdir().
+/                   Changed result code of critical errors.
+/                   Renamed string functions to avoid name collision.
+/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
+/                   Added multiple sector size support.
+/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
+/                   Fixed wrong cache control in f_lseek().
+/                   Added relative path feature.
+/                   Added f_chdir() and f_chdrive().
+/                   Added proper case conversion to extended char.
+/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
+/                   Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
+/                   Fixed name matching error on the 13 char boundary.
+/                   Added a configuration option, _LFN_UNICODE.
+/                   Changed f_readdir() to return the SFN with always upper
+/                   case on non-LFN cfg.
+/---------------------------------------------------------------------------*/
+
+#include "ff.h"                        /* FatFs configurations and declarations */
+#include "diskio.h"            /* Declarations of low level disk I/O functions */
+
+/*--------------------------------------------------------------------------
+
+   Module Private Definitions
+
+---------------------------------------------------------------------------*/
+
+#if _FATFS != 0x007E
+#error Wrong include file (ff.h).
+#endif
+
+#if _FS_REENTRANT
+#if _USE_LFN == 1
+#error Static LFN work area must not be used in re-entrant configuration.
+#endif
+#define        ENTER_FF(fs)            { if (!lock_fs(fs)) return FR_TIMEOUT; }
+#define        LEAVE_FF(fs, res)       { unlock_fs(fs, res); return res; }
+
+#else
+#define        ENTER_FF(fs)
+#define LEAVE_FF(fs, res)      return res
+
+#endif
+
+#define        ABORT(fs, res)          { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
+
+#ifndef NULL
+#define        NULL    0
+#endif
+
+/* Name status flags */
+#define NS                     11              /* Offset of name status byte */
+#define NS_LOSS                0x01    /* Out of 8.3 format */
+#define NS_LFN         0x02    /* Force to create LFN entry */
+#define NS_LAST                0x04    /* Last segment */
+#define NS_BODY                0x08    /* Lower case flag (body) */
+#define NS_EXT         0x10    /* Lower case flag (ext) */
+#define NS_DOT         0x20    /* Dot entry */
+
+
+
+
+/*--------------------------------------------------------------------------
+
+   Private Work Area
+
+---------------------------------------------------------------------------*/
+
+#if _DRIVES < 1 || _DRIVES > 9
+#error Number of drives must be 1-9.
+#endif
+static
+FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
+
+static
+WORD Fsid;                             /* File system mount ID */
+
+#if _FS_RPATH
+static
+BYTE Drive;                            /* Current drive */
+#endif
+
+
+#if _USE_LFN == 1      /* LFN with static LFN working buffer */
+static
+WCHAR LfnBuf[_MAX_LFN + 1];
+#define        NAMEBUF(sp,lp)  BYTE sp[12]; WCHAR *lp = LfnBuf
+#define INITBUF(dj,sp,lp)      dj.fn = sp; dj.lfn = lp
+
+#elif _USE_LFN > 1     /* LFN with dynamic LFN working buffer */
+#define        NAMEBUF(sp,lp)  BYTE sp[12]; WCHAR lbuf[_MAX_LFN + 1], *lp = lbuf
+#define INITBUF(dj,sp,lp)      dj.fn = sp; dj.lfn = lp
+
+#else                          /* No LFN */
+#define        NAMEBUF(sp,lp)  BYTE sp[12]
+#define INITBUF(dj,sp,lp)      dj.fn = sp
+
+#endif
+
+
+
+
+/*--------------------------------------------------------------------------
+
+   Module Private Functions
+
+---------------------------------------------------------------------------*/
+
+
+/*-----------------------------------------------------------------------*/
+/* String functions                                                      */
+/*-----------------------------------------------------------------------*/
+
+/* Copy memory to memory */
+static
+void mem_cpy (void* dst, const void* src, int cnt) {
+       char *d = (char*)dst;
+       const char *s = (const char *)src;
+       while (cnt--) *d++ = *s++;
+}
+
+/* Fill memory */
+static
+void mem_set (void* dst, int val, int cnt) {
+       char *d = (char*)dst;
+       while (cnt--) *d++ = (char)val;
+}
+
+/* Compare memory to memory */
+static
+int mem_cmp (const void* dst, const void* src, int cnt) {
+       const char *d = (const char *)dst, *s = (const char *)src;
+       int r = 0;
+       while (cnt-- && (r = *d++ - *s++) == 0) ;
+       return r;
+}
+
+/* Check if chr is contained in the string */
+static
+int chk_chr (const char* str, int chr) {
+       while (*str && *str != chr) str++;
+       return *str;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Request/Release grant to access the volume                            */
+/*-----------------------------------------------------------------------*/
+#if _FS_REENTRANT
+
+static
+BOOL lock_fs (
+       FATFS *fs               /* File system object */
+)
+{
+       return ff_req_grant(fs->sobj);
+}
+
+
+static
+void unlock_fs (
+       FATFS *fs,              /* File system object */
+       FRESULT res             /* Result code to be returned */
+)
+{
+       if (res != FR_NOT_ENABLED &&
+               res != FR_INVALID_DRIVE &&
+               res != FR_INVALID_OBJECT &&
+               res != FR_TIMEOUT) {
+               ff_rel_grant(fs->sobj);
+       }
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change window offset                                                  */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT move_window (
+       FATFS *fs,              /* File system object */
+       DWORD sector    /* Sector number to make apperance in the fs->win[] */
+)                                      /* Move to zero only writes back dirty window */
+{
+       DWORD wsect;
+
+
+       wsect = fs->winsect;
+       if (wsect != sector) {  /* Changed current window */
+#if !_FS_READONLY
+               if (fs->wflag) {        /* Write back dirty window if needed */
+                       if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK)
+                               return FR_DISK_ERR;
+                       fs->wflag = 0;
+                       if (wsect < (fs->fatbase + fs->sects_fat)) {    /* In FAT area */
+                               BYTE nf;
+                               for (nf = fs->n_fats; nf > 1; nf--) {   /* Refrect the change to all FAT copies */
+                                       wsect += fs->sects_fat;
+                                       disk_write(fs->drive, fs->win, wsect, 1);
+                               }
+                       }
+               }
+#endif
+               if (sector) {
+                       if (disk_read(fs->drive, fs->win, sector, 1) != RES_OK)
+                               return FR_DISK_ERR;
+                       fs->winsect = sector;
+               }
+       }
+
+       return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Clean-up cached data                                                  */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
+       FATFS *fs       /* File system object */
+)
+{
+       FRESULT res;
+
+
+       res = move_window(fs, 0);
+       if (res == FR_OK) {
+               /* Update FSInfo sector if needed */
+               if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
+                       fs->winsect = 0;
+                       mem_set(fs->win, 0, 512);
+                       ST_WORD(fs->win+BS_55AA, 0xAA55);
+                       ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
+                       ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
+                       ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
+                       ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
+                       disk_write(fs->drive, fs->win, fs->fsi_sector, 1);
+                       fs->fsi_flag = 0;
+               }
+               /* Make sure that no pending write process in the physical drive */
+               if (disk_ioctl(fs->drive, CTRL_SYNC, (void*)NULL) != RES_OK)
+                       res = FR_DISK_ERR;
+       }
+
+       return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Read value of a FAT entry                                */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD get_fat (        /* 0xFFFFFFFF:Disk error, 1:Interal error, Else:Cluster status */
+       FATFS *fs,      /* File system object */
+       DWORD clst      /* Cluster# to get the link information */
+)
+{
+       UINT wc, bc;
+       DWORD fsect;
+
+
+       if (clst < 2 || clst >= fs->max_clust)  /* Range check */
+               return 1;
+
+       fsect = fs->fatbase;
+       switch (fs->fs_type) {
+       case FS_FAT12 :
+               bc = clst; bc += bc / 2;
+               if (move_window(fs, fsect + (bc / SS(fs)))) break;
+               wc = fs->win[bc & (SS(fs) - 1)]; bc++;
+               if (move_window(fs, fsect + (bc / SS(fs)))) break;
+               wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;
+               return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
+
+       case FS_FAT16 :
+               if (move_window(fs, fsect + (clst / (SS(fs) / 2)))) break;
+               return LD_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)]);
+
+       case FS_FAT32 :
+               if (move_window(fs, fsect + (clst / (SS(fs) / 4)))) break;
+               return LD_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;
+       }
+
+       return 0xFFFFFFFF;      /* An error occured at the disk I/O layer */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Change value of a FAT entry                              */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+
+FRESULT put_fat (
+       FATFS *fs,      /* File system object */
+       DWORD clst,     /* Cluster# to be changed in range of 2 to fs->max_clust - 1 */
+       DWORD val       /* New value to mark the cluster */
+)
+{
+       UINT bc;
+       BYTE *p;
+       DWORD fsect;
+       FRESULT res;
+
+
+       if (clst < 2 || clst >= fs->max_clust) {        /* Range check */
+               res = FR_INT_ERR;
+
+       } else {
+               fsect = fs->fatbase;
+               switch (fs->fs_type) {
+               case FS_FAT12 :
+                       bc = clst; bc += bc / 2;
+                       res = move_window(fs, fsect + (bc / SS(fs)));
+                       if (res != FR_OK) break;
+                       p = &fs->win[bc & (SS(fs) - 1)];
+                       *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
+                       bc++;
+                       fs->wflag = 1;
+                       res = move_window(fs, fsect + (bc / SS(fs)));
+                       if (res != FR_OK) break;
+                       p = &fs->win[bc & (SS(fs) - 1)];
+                       *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
+                       break;
+
+               case FS_FAT16 :
+                       res = move_window(fs, fsect + (clst / (SS(fs) / 2)));
+                       if (res != FR_OK) break;
+                       ST_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)], (WORD)val);
+                       break;
+
+               case FS_FAT32 :
+                       res = move_window(fs, fsect + (clst / (SS(fs) / 4)));
+                       if (res != FR_OK) break;
+                       ST_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)], val);
+                       break;
+
+               default :
+                       res = FR_INT_ERR;
+               }
+               fs->wflag = 1;
+       }
+
+       return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Remove a cluster chain                                 */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT remove_chain (
+       FATFS *fs,                      /* File system object */
+       DWORD clst                      /* Cluster# to remove a chain from */
+)
+{
+       FRESULT res;
+       DWORD nxt;
+
+
+       if (clst < 2 || clst >= fs->max_clust) {        /* Check the range of cluster# */
+               res = FR_INT_ERR;
+
+       } else {
+               res = FR_OK;
+               while (clst < fs->max_clust) {                  /* Not a last link? */
+                       nxt = get_fat(fs, clst);                        /* Get cluster status */
+                       if (nxt == 0) break;                            /* Empty cluster? */
+                       if (nxt == 1) { res = FR_INT_ERR; break; }      /* Internal error? */
+                       if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }    /* Disk error? */
+                       res = put_fat(fs, clst, 0);                     /* Mark the cluster "empty" */
+                       if (res != FR_OK) break;
+                       if (fs->free_clust != 0xFFFFFFFF) {     /* Update FSInfo */
+                               fs->free_clust++;
+                               fs->fsi_flag = 1;
+                       }
+                       clst = nxt;     /* Next cluster */
+               }
+       }
+
+       return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Stretch or Create a cluster chain                      */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+DWORD create_chain (   /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
+       FATFS *fs,                      /* File system object */
+       DWORD clst                      /* Cluster# to stretch. 0 means create a new chain. */
+)
+{
+       DWORD cs, ncl, scl, mcl;
+
+
+       mcl = fs->max_clust;
+       if (clst == 0) {                /* Create new chain */
+               scl = fs->last_clust;                   /* Get suggested start point */
+               if (scl == 0 || scl >= mcl) scl = 1;
+       }
+       else {                                  /* Stretch existing chain */
+               cs = get_fat(fs, clst);                 /* Check the cluster status */
+               if (cs < 2) return 1;                   /* It is an invalid cluster */
+               if (cs < mcl) return cs;                /* It is already followed by next cluster */
+               scl = clst;
+       }
+
+       ncl = scl;                              /* Start cluster */
+       for (;;) {
+               ncl++;                                                  /* Next cluster */
+               if (ncl >= mcl) {                               /* Wrap around */
+                       ncl = 2;
+                       if (ncl > scl) return 0;        /* No free custer */
+               }
+               cs = get_fat(fs, ncl);                  /* Get the cluster status */
+               if (cs == 0) break;                             /* Found a free cluster */
+               if (cs == 0xFFFFFFFF || cs == 1)/* An error occured */
+                       return cs;
+               if (ncl == scl) return 0;               /* No free custer */
+       }
+
+       if (put_fat(fs, ncl, 0x0FFFFFFF))       /* Mark the new cluster "in use" */
+               return 0xFFFFFFFF;
+       if (clst != 0) {                                        /* Link it to the previous one if needed */
+               if (put_fat(fs, clst, ncl))
+                       return 0xFFFFFFFF;
+       }
+
+       fs->last_clust = ncl;                           /* Update FSINFO */
+       if (fs->free_clust != 0xFFFFFFFF) {
+               fs->free_clust--;
+               fs->fsi_flag = 1;
+       }
+
+       return ncl;             /* Return new cluster number */
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get sector# from cluster#                                             */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD clust2sect (     /* !=0: Sector number, 0: Failed - invalid cluster# */
+       FATFS *fs,              /* File system object */
+       DWORD clst              /* Cluster# to be converted */
+)
+{
+       clst -= 2;
+       if (clst >= (fs->max_clust - 2)) return 0;              /* Invalid cluster# */
+       return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Seek directory index                             */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_seek (
+       DIR *dj,                /* Pointer to directory object */
+       WORD idx                /* Directory index number */
+)
+{
+       DWORD clst;
+       WORD ic;
+
+
+       dj->index = idx;
+       clst = dj->sclust;
+       if (clst == 1 || clst >= dj->fs->max_clust)     /* Check start cluster range */
+               return FR_INT_ERR;
+       if (!clst && dj->fs->fs_type == FS_FAT32)       /* Replace cluster# 0 with root cluster# if in FAT32 */
+               clst = dj->fs->dirbase;
+
+       if (clst == 0) {        /* Static table */
+               dj->clust = clst;
+               if (idx >= dj->fs->n_rootdir)           /* Index is out of range */
+                       return FR_INT_ERR;
+               dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32);   /* Sector# */
+       }
+       else {                          /* Dynamic table */
+               ic = SS(dj->fs) / 32 * dj->fs->csize;   /* Entries per cluster */
+               while (idx >= ic) {     /* Follow cluster chain */
+                       clst = get_fat(dj->fs, clst);                           /* Get next cluster */
+                       if (clst == 0xFFFFFFFF) return FR_DISK_ERR;     /* Disk error */
+                       if (clst < 2 || clst >= dj->fs->max_clust)      /* Reached to end of table or int error */
+                               return FR_INT_ERR;
+                       idx -= ic;
+               }
+               dj->clust = clst;
+               dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32);  /* Sector# */
+       }
+
+       dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */
+
+       return FR_OK;   /* Seek succeeded */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Move directory index next                        */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_next (     /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not streach */
+       DIR *dj,                /* Pointer to directory object */
+       BOOL streach    /* FALSE: Do not streach table, TRUE: Streach table if needed */
+)
+{
+       DWORD clst;
+       WORD i;
+
+
+       i = dj->index + 1;
+       if (!i || !dj->sect)    /* Report EOT when index has reached 65535 */
+               return FR_NO_FILE;
+
+       if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */
+               dj->sect++;                                     /* Next sector */
+
+               if (dj->clust == 0) {   /* Static table */
+                       if (i >= dj->fs->n_rootdir)     /* Report EOT when end of table */
+                               return FR_NO_FILE;
+               }
+               else {                                  /* Dynamic table */
+                       if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) {     /* Cluster changed? */
+                               clst = get_fat(dj->fs, dj->clust);                              /* Get next cluster */
+                               if (clst <= 1) return FR_INT_ERR;
+                               if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+                               if (clst >= dj->fs->max_clust) {                                /* When it reached end of dynamic table */
+#if !_FS_READONLY
+                                       BYTE c;
+                                       if (!streach) return FR_NO_FILE;                        /* When do not streach, report EOT */
+                                       clst = create_chain(dj->fs, dj->clust);         /* Streach cluster chain */
+                                       if (clst == 0) return FR_DENIED;                        /* No free cluster */
+                                       if (clst == 1) return FR_INT_ERR;
+                                       if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+                                       /* Clean-up streached table */
+                                       if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
+                                       mem_set(dj->fs->win, 0, SS(dj->fs));                    /* Clear window buffer */
+                                       dj->fs->winsect = clust2sect(dj->fs, clst);     /* Cluster start sector */
+                                       for (c = 0; c < dj->fs->csize; c++) {           /* Fill the new cluster with 0 */
+                                               dj->fs->wflag = 1;
+                                               if (move_window(dj->fs, 0)) return FR_DISK_ERR;
+                                               dj->fs->winsect++;
+                                       }
+                                       dj->fs->winsect -= c;                                           /* Rewind window address */
+#else
+                                       return FR_NO_FILE;                      /* Report EOT */
+#endif
+                               }
+                               dj->clust = clst;                               /* Initialize data for new cluster */
+                               dj->sect = clust2sect(dj->fs, clst);
+                       }
+               }
+       }
+
+       dj->index = i;
+       dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;
+
+       return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry   */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30};     /* Offset of LFN chars in the directory entry */
+
+
+static
+BOOL cmp_lfn (                 /* TRUE:Matched, FALSE:Not matched */
+       WCHAR *lfnbuf,          /* Pointer to the LFN to be compared */
+       BYTE *dir                       /* Pointer to the directory entry containing a part of LFN */
+)
+{
+       int i, s;
+       WCHAR wc, uc;
+
+
+       i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13;  /* Get offset in the LFN buffer */
+       s = 0; wc = 1;
+       do {
+               uc = LD_WORD(dir+LfnOfs[s]);    /* Pick an LFN character from the entry */
+               if (wc) {       /* Last char has not been processed */
+                       wc = ff_wtoupper(uc);           /* Convert it to upper case */
+                       if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++]))    /* Compare it */
+                               return FALSE;                   /* Not matched */
+               } else {
+                       if (uc != 0xFFFF) return FALSE; /* Check filler */
+               }
+       } while (++s < 13);                             /* Repeat until all chars in the entry are checked */
+
+       if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i])  /* Last segment matched but different length */
+               return FALSE;
+
+       return TRUE;                                    /* The part of LFN matched */
+}
+
+
+
+static
+BOOL pick_lfn (                        /* TRUE:Succeeded, FALSE:Buffer overflow */
+       WCHAR *lfnbuf,          /* Pointer to the Unicode-LFN buffer */
+       BYTE *dir                       /* Pointer to the directory entry */
+)
+{
+       int i, s;
+       WCHAR wc, uc;
+
+
+       i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;  /* Offset in the LFN buffer */
+
+       s = 0; wc = 1;
+       do {
+               uc = LD_WORD(dir+LfnOfs[s]);                    /* Pick an LFN character from the entry */
+               if (wc) {       /* Last char has not been processed */
+                       if (i >= _MAX_LFN) return FALSE;        /* Buffer overflow? */
+                       lfnbuf[i++] = wc = uc;                          /* Store it */
+               } else {
+                       if (uc != 0xFFFF) return FALSE;         /* Check filler */
+               }
+       } while (++s < 13);                                             /* Read all character in the entry */
+
+       if (dir[LDIR_Ord] & 0x40) {                             /* Put terminator if it is the last LFN part */
+               if (i >= _MAX_LFN) return FALSE;        /* Buffer overflow? */
+               lfnbuf[i] = 0;
+       }
+
+       return TRUE;
+}
+
+
+#if !_FS_READONLY
+static
+void fit_lfn (
+       const WCHAR *lfnbuf,    /* Pointer to the LFN buffer */
+       BYTE *dir,                              /* Pointer to the directory entry */
+       BYTE ord,                               /* LFN order (1-20) */
+       BYTE sum                                /* SFN sum */
+)
+{
+       int i, s;
+       WCHAR wc;
+
+
+       dir[LDIR_Chksum] = sum;                 /* Set check sum */
+       dir[LDIR_Attr] = AM_LFN;                /* Set attribute. LFN entry */
+       dir[LDIR_Type] = 0;
+       ST_WORD(dir+LDIR_FstClusLO, 0);
+
+       i = (ord - 1) * 13;                             /* Get offset in the LFN buffer */
+       s = wc = 0;
+       do {
+               if (wc != 0xFFFF) wc = lfnbuf[i++];     /* Get an effective char */
+               ST_WORD(dir+LfnOfs[s], wc);     /* Put it */
+               if (!wc) wc = 0xFFFF;           /* Padding chars following last char */
+       } while (++s < 13);
+       if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40;    /* Bottom LFN part is the start of LFN sequence */
+       dir[LDIR_Ord] = ord;                    /* Set the LFN order */
+}
+
+#endif
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create numbered name                                                  */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+void gen_numname (
+       BYTE *dst,                      /* Pointer to genartated SFN */
+       const BYTE *src,        /* Pointer to source SFN to be modified */
+       const WCHAR *lfn,       /* Pointer to LFN */
+       WORD num                        /* Sequense number */
+)
+{
+       char ns[8];
+       int i, j;
+
+
+       mem_cpy(dst, src, 11);
+
+       if (num > 5) {  /* On many collisions, generate a hash number instead of sequencial number */
+               do num = (num >> 1) + (num << 15) + (WORD)*lfn++; while (*lfn);
+       }
+
+       /* itoa */
+       i = 7;
+       do {
+               ns[i--] = (num % 10) + '0';
+               num /= 10;
+       } while (num);
+       ns[i] = '~';
+
+       /* Append the number */
+       for (j = 0; j < i && dst[j] != ' '; j++) {
+               if (IsDBCS1(dst[j])) {
+                       if (j == i - 1) break;
+                       j++;
+               }
+       }
+       do {
+               dst[j++] = (i < 8) ? ns[i++] : ' ';
+       } while (j < 8);
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Calculate sum of an SFN                                               */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+BYTE sum_sfn (
+       const BYTE *dir         /* Ptr to directory entry */
+)
+{
+       BYTE sum = 0;
+       int n = 11;
+
+       do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
+       return sum;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Find an object in the directory                  */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_find (
+       DIR *dj                 /* Pointer to the directory object linked to the file name */
+)
+{
+       FRESULT res;
+       BYTE c, *dir;
+#if _USE_LFN
+       BYTE a, ord, sum;
+#endif
+
+       res = dir_seek(dj, 0);                  /* Rewind directory object */
+       if (res != FR_OK) return res;
+
+#if _USE_LFN
+       ord = sum = 0xFF;
+#endif
+       do {
+               res = move_window(dj->fs, dj->sect);
+               if (res != FR_OK) break;
+               dir = dj->dir;                                  /* Ptr to the directory entry of current index */
+               c = dir[DIR_Name];
+               if (c == 0) { res = FR_NO_FILE; break; }        /* Reached to end of table */
+#if _USE_LFN   /* LFN configuration */
+               a = dir[DIR_Attr] & AM_MASK;
+               if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) {       /* An entry without valid data */
+                       ord = 0xFF;
+               } else {
+                       if (a == AM_LFN) {                      /* An LFN entry is found */
+                               if (dj->lfn) {
+                                       if (c & 0x40) {         /* Is it start of LFN sequence? */
+                                               sum = dir[LDIR_Chksum];
+                                               c &= 0xBF; ord = c;     /* LFN start order */
+                                               dj->lfn_idx = dj->index;
+                                       }
+                                       /* Check validity of the LFN entry and compare it with given name */
+                                       ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
+                               }
+                       } else {                                        /* An SFN entry is found */
+                               if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
+                               ord = 0xFF; dj->lfn_idx = 0xFFFF;       /* Reset LFN sequence */
+                               if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break;        /* SFN matched? */
+                       }
+               }
+#else          /* Non LFN configuration */
+               if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
+                       break;
+#endif
+               res = dir_next(dj, FALSE);              /* Next entry */
+       } while (res == FR_OK);
+
+       return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read an object from the directory                                     */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+FRESULT dir_read (
+       DIR *dj                 /* Pointer to the directory object that pointing the entry to be read */
+)
+{
+       FRESULT res;
+       BYTE c, *dir;
+#if _USE_LFN
+       BYTE a, ord = 0xFF, sum = 0xFF;
+#endif
+
+       res = FR_NO_FILE;
+       while (dj->sect) {
+               res = move_window(dj->fs, dj->sect);
+               if (res != FR_OK) break;
+               dir = dj->dir;                                  /* Ptr to the directory entry of current index */
+               c = dir[DIR_Name];
+               if (c == 0) { res = FR_NO_FILE; break; }        /* Reached to end of table */
+#if _USE_LFN   /* LFN configuration */
+               a = dir[DIR_Attr] & AM_MASK;
+               if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) {   /* An entry without valid data */
+                       ord = 0xFF;
+               } else {
+                       if (a == AM_LFN) {                      /* An LFN entry is found */
+                               if (c & 0x40) {                 /* Is it start of LFN sequence? */
+                                       sum = dir[LDIR_Chksum];
+                                       c &= 0xBF; ord = c;
+                                       dj->lfn_idx = dj->index;
+                               }
+                               /* Check LFN validity and capture it */
+                               ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
+                       } else {                                        /* An SFN entry is found */
+                               if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
+                                       dj->lfn_idx = 0xFFFF;           /* It has no LFN. */
+                               break;
+                       }
+               }
+#else          /* Non LFN configuration */
+               if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL))  /* Is it a valid entry? */
+                       break;
+#endif
+               res = dir_next(dj, FALSE);                              /* Next entry */
+               if (res != FR_OK) break;
+       }
+
+       if (res != FR_OK) dj->sect = 0;
+
+       return res;
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Register an object to the directory                                   */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
+       DIR *dj                         /* Target directory with object name to be created */
+)
+{
+       FRESULT res;
+       BYTE c, *dir;
+#if _USE_LFN   /* LFN configuration */
+       WORD n, ne, is;
+       BYTE sn[12], *fn, sum;
+       WCHAR *lfn;
+
+
+       fn = dj->fn; lfn = dj->lfn;
+       mem_cpy(sn, fn, 12);
+
+       if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME;     /* Cannot create dot entry */
+
+       if (sn[NS] & NS_LOSS) {                 /* When LFN is out of 8.3 format, generate a numbered name */
+               fn[NS] = 0; dj->lfn = NULL;                     /* Find only SFN */
+               for (n = 1; n < 100; n++) {
+                       gen_numname(fn, sn, lfn, n);    /* Generate a numbered name */
+                       res = dir_find(dj);                             /* Check if the name collides with existing SFN */
+                       if (res != FR_OK) break;
+               }
+               if (n == 100) return FR_DENIED;         /* Abort if too many collisions */
+               if (res != FR_NO_FILE) return res;      /* Abort if the result is other than 'not collided' */
+               fn[NS] = sn[NS]; dj->lfn = lfn;
+       }
+
+       if (sn[NS] & NS_LFN) {                  /* When LFN is to be created, reserve reserve an SFN + LFN entries. */
+               for (ne = 0; lfn[ne]; ne++) ;
+               ne = (ne + 25) / 13;
+       } else {                                                /* Otherwise reserve only an SFN entry. */
+               ne = 1;
+       }
+
+       /* Reserve contiguous entries */
+       res = dir_seek(dj, 0);
+       if (res != FR_OK) return res;
+       n = is = 0;
+       do {
+               res = move_window(dj->fs, dj->sect);
+               if (res != FR_OK) break;
+               c = *dj->dir;                           /* Check the entry status */
+               if (c == 0xE5 || c == 0) {      /* Is it a blank entry? */
+                       if (n == 0) is = dj->index;     /* First index of the contigulus entry */
+                       if (++n == ne) break;   /* A contiguous entry that requiered count is found */
+               } else {
+                       n = 0;                                  /* Not a blank entry. Restart to search */
+               }
+               res = dir_next(dj, TRUE);       /* Next entry with table streach */
+       } while (res == FR_OK);
+
+       if (res == FR_OK && ne > 1) {   /* Initialize LFN entry if needed */
+               res = dir_seek(dj, is);
+               if (res == FR_OK) {
+                       sum = sum_sfn(dj->fn);  /* Sum of the SFN tied to the LFN */
+                       ne--;
+                       do {                                    /* Store LFN entries in bottom first */
+                               res = move_window(dj->fs, dj->sect);
+                               if (res != FR_OK) break;
+                               fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
+                               dj->fs->wflag = 1;
+                               res = dir_next(dj, FALSE);      /* Next entry */
+                       } while (res == FR_OK && --ne);
+               }
+       }
+
+#else  /* Non LFN configuration */
+       res = dir_seek(dj, 0);
+       if (res == FR_OK) {
+               do {    /* Find a blank entry for the SFN */
+                       res = move_window(dj->fs, dj->sect);
+                       if (res != FR_OK) break;
+                       c = *dj->dir;
+                       if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */
+                       res = dir_next(dj, TRUE);               /* Next entry with table streach */
+               } while (res == FR_OK);
+       }
+#endif
+
+       if (res == FR_OK) {             /* Initialize the SFN entry */
+               res = move_window(dj->fs, dj->sect);
+               if (res == FR_OK) {
+                       dir = dj->dir;
+                       mem_set(dir, 0, 32);            /* Clean the entry */
+                       mem_cpy(dir, dj->fn, 11);       /* Put SFN */
+                       dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT);     /* Put NT flag */
+                       dj->fs->wflag = 1;
+               }
+       }
+
+       return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Remove an object from the directory                                   */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY && !_FS_MINIMIZE
+static
+FRESULT dir_remove (   /* FR_OK: Successful, FR_DISK_ERR: A disk error */
+       DIR *dj                         /* Directory object pointing the entry to be removed */
+)
+{
+       FRESULT res;
+#if _USE_LFN   /* LFN configuration */
+       WORD i;
+
+       i = dj->index;  /* SFN index */
+       res = dir_seek(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx));  /* Goto the SFN or top of the LFN entries */
+       if (res == FR_OK) {
+               do {
+                       res = move_window(dj->fs, dj->sect);
+                       if (res != FR_OK) break;
+                       *dj->dir = 0xE5;                        /* Mark the entry "deleted" */
+                       dj->fs->wflag = 1;
+                       if (dj->index >= i) break;      /* When reached SFN, all entries of the object has been deleted. */
+                       res = dir_next(dj, FALSE);      /* Next entry */
+               } while (res == FR_OK);
+               if (res == FR_NO_FILE) res = FR_INT_ERR;
+       }
+
+#else                  /* Non LFN configuration */
+       res = dir_seek(dj, dj->index);
+       if (res == FR_OK) {
+               res = move_window(dj->fs, dj->sect);
+               if (res == FR_OK) {
+                       *dj->dir = 0xE5;                        /* Mark the entry "deleted" */
+                       dj->fs->wflag = 1;
+               }
+       }
+#endif
+
+       return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Pick a segment and create the object name in directory form           */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT create_name (
+       DIR *dj,                        /* Pointer to the directory object */
+       const XCHAR **path      /* Pointer to pointer to the segment in the path string */
+)
+{
+#ifdef _EXCVT
+       static const BYTE cvt[] = _EXCVT;
+#endif
+
+#if _USE_LFN   /* LFN configuration */
+       BYTE b, cf;
+       WCHAR w, *lfn;
+       int i, ni, si, di;
+       const XCHAR *p;
+
+       /* Create LFN in Unicode */
+       si = di = 0;
+       p = *path;
+       lfn = dj->lfn;
+       for (;;) {
+               w = p[si++];                                    /* Get a character */
+               if (w < ' ' || w == '/' || w == '\\') break;    /* Break on end of segment */
+               if (di >= _MAX_LFN)                             /* Reject too long name */
+                       return FR_INVALID_NAME;
+#if !_LFN_UNICODE
+               w &= 0xFF;
+               if (IsDBCS1(w)) {                               /* If it is a DBC 1st byte */
+                       b = p[si++];                            /* Get 2nd byte */
+                       if (!IsDBCS2(b))                        /* Reject invalid code for DBC */
+                               return FR_INVALID_NAME;
+                       w = (w << 8) + b;
+               }
+               w = ff_convert(w, 1);                   /* Convert OEM to Unicode */
+               if (!w) return FR_INVALID_NAME; /* Reject invalid code */
+#endif
+               if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
+                       return FR_INVALID_NAME;
+               lfn[di++] = w;                                  /* Store the Unicode char */
+       }
+       *path = &p[si];                                         /* Rerurn pointer to the next segment */
+       cf = (w < ' ') ? NS_LAST : 0;           /* Set last segment flag if end of path */
+#if _FS_RPATH
+       if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */
+               (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {
+               lfn[di] = 0;
+               for (i = 0; i < 11; i++)
+                       dj->fn[i] = (i < di) ? '.' : ' ';
+               dj->fn[i] = cf | NS_DOT;                /* This is a dot entry */
+               return FR_OK;
+       }
+#endif
+       while (di) {                                            /* Strip trailing spaces and dots */
+               w = lfn[di - 1];
+               if (w != ' ' && w != '.') break;
+               di--;
+       }
+       if (!di) return FR_INVALID_NAME;        /* Reject null string */
+
+       lfn[di] = 0;                                            /* LFN is created */
+
+       /* Create SFN in directory form */
+       mem_set(dj->fn, ' ', 11);
+       for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ;  /* Strip leading spaces and dots */
+       if (si) cf |= NS_LOSS | NS_LFN;
+       while (di && lfn[di - 1] != '.') di--;  /* Find extension (di<=si: no extension) */
+
+       b = i = 0; ni = 8;
+       for (;;) {
+               w = lfn[si++];                                  /* Get an LFN char */
+               if (!w) break;                                  /* Break on enf of the LFN */
+               if (w == ' ' || (w == '.' && si != di)) {       /* Remove spaces and dots */
+                       cf |= NS_LOSS | NS_LFN; continue;
+               }
+
+               if (i >= ni || si == di) {              /* Extension or end of SFN */
+                       if (ni == 11) {                         /* Long extension */
+                               cf |= NS_LOSS | NS_LFN; break;
+                       }
+                       if (si != di) cf |= NS_LOSS | NS_LFN;   /* Out of 8.3 format */
+                       if (si > di) break;                     /* No extension */
+                       si = di; i = 8; ni = 11;        /* Enter extension section */
+                       b <<= 2; continue;
+               }
+
+               if (w >= 0x80) {                                /* Non ASCII char */
+#ifdef _EXCVT
+                       w = ff_convert(w, 0);           /* Unicode -> OEM code */
+                       if (w) w = cvt[w - 0x80];       /* Convert extended char to upper (SBCS) */
+#else
+                       w = ff_convert(ff_wtoupper(w), 0);      /* Upper converted Unicode -> OEM code */
+#endif
+                       cf |= NS_LFN;                           /* Force create LFN entry */
+               }
+
+               if (_DF1S && w >= 0x100) {              /* Double byte char */
+                       if (i >= ni - 1) {
+                               cf |= NS_LOSS | NS_LFN; i = ni; continue;
+                       }
+                       dj->fn[i++] = (BYTE)(w >> 8);
+               } else {                                                /* Single byte char */
+                       if (!w || chk_chr("+,;[=]", w)) {               /* Replace illegal chars for SFN */
+                               w = '_'; cf |= NS_LOSS | NS_LFN;        /* Lossy conversion */
+                       } else {
+                               if (IsUpper(w)) {               /* ASCII large capital */
+                                       b |= 2;
+                               } else {
+                                       if (IsLower(w)) {       /* ASCII small capital */
+                                               b |= 1; w -= 0x20;
+                                       }
+                               }
+                       }
+               }
+               dj->fn[i++] = (BYTE)w;
+       }
+
+       if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05;        /* If the first char collides with deleted mark, replace it with 0x05 */
+
+       if (ni == 8) b <<= 2;
+       if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03)   /* Create LFN entry when there are composite capitals */
+               cf |= NS_LFN;
+       if (!(cf & NS_LFN)) {                                           /* When LFN is in 8.3 format without extended char, NT flags are created */
+               if ((b & 0x03) == 0x01) cf |= NS_EXT;   /* NT flag (Extension has only small capital) */
+               if ((b & 0x0C) == 0x04) cf |= NS_BODY;  /* NT flag (Filename has only small capital) */
+       }
+
+       dj->fn[NS] = cf;        /* SFN is created */
+
+       return FR_OK;
+
+
+#else  /* Non-LFN configuration */
+       BYTE b, c, d, *sfn;
+       int ni, si, i;
+       const char *p;
+
+       /* Create file name in directory form */
+       sfn = dj->fn;
+       mem_set(sfn, ' ', 11);
+       si = i = b = 0; ni = 8;
+       p = *path;
+#if _FS_RPATH
+       if (p[si] == '.') { /* Is this a dot entry? */
+               for (;;) {
+                       c = p[si++];
+                       if (c != '.' || si >= 3) break;
+                       sfn[i++] = c;
+               }
+               if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
+               *path = &p[si];                                                                 /* Rerurn pointer to the next segment */
+               sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT;       /* Set last segment flag if end of path */
+               return FR_OK;
+       }
+#endif
+       for (;;) {
+               c = p[si++];
+               if (c <= ' ' || c == '/' || c == '\\') break;   /* Break on end of segment */
+               if (c == '.' || i >= ni) {
+                       if (ni != 8 || c != '.') return FR_INVALID_NAME;
+                       i = 8; ni = 11;
+                       b <<= 2; continue;
+               }
+               if (c >= 0x80) {                                /* Extended char */
+#ifdef _EXCVT
+                       c = cvt[c - 0x80];                      /* Convert extend char (SBCS) */
+#else
+                       b |= 3;                                         /* Eliminate NT flag if ext char is exist */
+#if !_DF1S     /* ASCII only cfg */
+                       return FR_INVALID_NAME;
+#endif
+#endif
+               }
+               if (IsDBCS1(c)) {                               /* DBC 1st byte? */
+                       d = p[si++];                            /* Get 2nd byte */
+                       if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
+                               return FR_INVALID_NAME;
+                       sfn[i++] = c;
+                       sfn[i++] = d;
+               } else {                                                /* Single byte code */
+                       if (chk_chr(" \"*+,[=]|\x7F", c))       /* Reject illegal chrs for SFN */
+                               return FR_INVALID_NAME;
+                       if (IsUpper(c)) {                       /* ASCII large capital? */
+                               b |= 2;
+                       } else {
+                               if (IsLower(c)) {               /* ASCII small capital? */
+                                       b |= 1; c -= 0x20;
+                               }
+                       }
+                       sfn[i++] = c;
+               }
+       }
+       *path = &p[si];                                         /* Rerurn pointer to the next segment */
+       c = (c <= ' ') ? NS_LAST : 0;           /* Set last segment flag if end of path */
+
+       if (!i) return FR_INVALID_NAME;         /* Reject null string */
+       if (sfn[0] == 0xE5) sfn[0] = 0x05;      /* When first char collides with 0xE5, replace it with 0x05 */
+
+       if (ni == 8) b <<= 2;
+       if ((b & 0x03) == 0x01) c |= NS_EXT;    /* NT flag (Extension has only small capital) */
+       if ((b & 0x0C) == 0x04) c |= NS_BODY;   /* NT flag (Filename has only small capital) */
+
+       sfn[NS] = c;            /* Store NT flag, File name is created */
+
+       return FR_OK;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get file information from directory entry                             */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+void get_fileinfo (            /* No return code */
+       DIR *dj,                        /* Pointer to the directory object */
+       FILINFO *fno            /* Pointer to the file information to be filled */
+)
+{
+       int i;
+       BYTE c, nt, *dir;
+       char *p;
+
+
+       p = fno->fname;
+       if (dj->sect) {
+               dir = dj->dir;
+               nt = dir[DIR_NTres];            /* NT flag */
+               for (i = 0; i < 8; i++) {       /* Copy name body */
+                       c = dir[i];
+                       if (c == ' ') break;
+                       if (c == 0x05) c = 0xE5;
+                       if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
+                       *p++ = c;
+               }
+               if (dir[8] != ' ') {            /* Copy name extension */
+                       *p++ = '.';
+                       for (i = 8; i < 11; i++) {
+                               c = dir[i];
+                               if (c == ' ') break;
+                               if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
+                               *p++ = c;
+                       }
+               }
+               fno->fattrib = dir[DIR_Attr];                           /* Attribute */
+               fno->fsize = LD_DWORD(dir+DIR_FileSize);        /* Size */
+               fno->fdate = LD_WORD(dir+DIR_WrtDate);          /* Date */
+               fno->ftime = LD_WORD(dir+DIR_WrtTime);          /* Time */
+       }
+       *p = 0;
+
+#if _USE_LFN
+       if (fno->lfname) {
+               XCHAR *tp = fno->lfname;
+               WCHAR w, *lfn;
+
+               i = 0;
+               if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
+                       lfn = dj->lfn;
+                       while ((w = *lfn++) != 0) {                     /* Get an LFN char */
+#if !_LFN_UNICODE
+                               w = ff_convert(w, 0);                   /* Unicode -> OEM conversion */
+                               if (!w) { i = 0; break; }               /* Could not convert, no LFN */
+                               if (_DF1S && w >= 0x100)                /* Put 1st byte if it is a DBC */
+                                       tp[i++] = (XCHAR)(w >> 8);
+#endif
+                               if (i >= fno->lfsize - 1) { i = 0; break; }     /* Buffer overrun, no LFN */
+                               tp[i++] = (XCHAR)w;
+                       }
+               }
+               tp[i] = 0;      /* Terminator */
+       }
+#endif
+}
+#endif /* _FS_MINIMIZE <= 1 */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Follow a file path                                                    */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT follow_path (  /* FR_OK(0): successful, !=0: error code */
+       DIR *dj,                        /* Directory object to return last directory and found object */
+       const XCHAR *path       /* Full-path string to find a file or directory */
+)
+{
+       FRESULT res;
+       BYTE *dir, last;
+
+
+       while (!_USE_LFN && *path == ' ') path++;       /* Skip leading spaces */
+#if _FS_RPATH
+       if (*path == '/' || *path == '\\') { /* There is a heading separator */
+               path++; dj->sclust = 0;         /* Strip it and start from the root dir */
+       } else {                                                        /* No heading saparator */
+               dj->sclust = dj->fs->cdir;      /* Start from the current dir */
+       }
+#else
+       if (*path == '/' || *path == '\\')      /* Strip heading separator if exist */
+               path++;
+       dj->sclust = 0;                                         /* Start from the root dir */
+#endif
+
+       if ((UINT)*path < ' ') {                        /* Null path means the start directory itself */
+               res = dir_seek(dj, 0);
+               dj->dir = NULL;
+
+       } else {                                                        /* Follow path */
+               for (;;) {
+                       res = create_name(dj, &path);   /* Get a segment */
+                       if (res != FR_OK) break;
+                       res = dir_find(dj);                             /* Find it */
+                       last = *(dj->fn+NS) & NS_LAST;
+                       if (res != FR_OK) {                             /* Could not find the object */
+                               if (res == FR_NO_FILE && !last)
+                                       res = FR_NO_PATH;
+                               break;
+                       }
+                       if (last) break;                                /* Last segment match. Function completed. */
+                       dir = dj->dir;                                  /* There is next segment. Follow the sub directory */
+                       if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
+                               res = FR_NO_PATH; break;
+                       }
+                       dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+               }
+       }
+
+       return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Load boot record and check if it is an FAT boot record                */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE check_fs (        /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */
+       FATFS *fs,      /* File system object */
+       DWORD sect      /* Sector# (lba) to check if it is an FAT boot record or not */
+)
+{
+       if (disk_read(fs->drive, fs->win, sect, 1) != RES_OK)   /* Load boot record */
+               return 3;
+       if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55)               /* Check record signature (always placed at offset 510 even if the sector size is >512) */
+               return 2;
+
+       if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
+               return 0;
+       if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
+               return 0;
+
+       return 1;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Make sure that the file system is valid                               */
+/*-----------------------------------------------------------------------*/
+
+
+FRESULT chk_mounted (  /* FR_OK(0): successful, !=0: any error occured */
+       const XCHAR **path,     /* Pointer to pointer to the path name (drive number) */
+       FATFS **rfs,            /* Pointer to pointer to the found file system object */
+       BYTE chk_wp                     /* !=0: Check media write protection for write access */
+)
+{
+       BYTE fmt, *tbl;
+       UINT vol;
+       DSTATUS stat;
+       DWORD bsect, fsize, tsect, mclst;
+       const XCHAR *p = *path;
+       FATFS *fs;
+
+       /* Get logical drive number from the path name */
+       vol = p[0] - '0';                               /* Is there a drive number? */
+       if (vol <= 9 && p[1] == ':') {  /* Found a drive number, get and strip it */
+               p += 2; *path = p;                      /* Return pointer to the path name */
+       } else {                                                /* No drive number is given */
+#if _FS_RPATH
+               vol = Drive;                            /* Use current drive */
+#else
+               vol = 0;                                        /* Use drive 0 */
+#endif
+       }
+
+       /* Check if the logical drive is valid or not */
+       if (vol >= _DRIVES)                     /* Is the drive number valid? */
+               return FR_INVALID_DRIVE;
+       *rfs = fs = FatFs[vol];                 /* Returen pointer to the corresponding file system object */
+       if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
+
+       ENTER_FF(fs);                                   /* Lock file system */
+
+       if (fs->fs_type) {                              /* If the logical drive has been mounted */
+               stat = disk_status(fs->drive);
+               if (!(stat & STA_NOINIT)) {     /* and the physical drive is kept initialized (has not been changed), */
+#if !_FS_READONLY
+                       if (chk_wp && (stat & STA_PROTECT))     /* Check write protection if needed */
+                               return FR_WRITE_PROTECTED;
+#endif
+                       return FR_OK;                   /* The file system object is valid */
+               }
+       }
+
+       /* The logical drive must be mounted. Following code attempts to mount the volume */
+
+       fs->fs_type = 0;                                        /* Clear the file system object */
+       fs->drive = (BYTE)LD2PD(vol);           /* Bind the logical drive and a physical drive */
+       stat = disk_initialize(fs->drive);      /* Initialize low level disk I/O layer */
+       if (stat & STA_NOINIT)                          /* Check if the drive is ready */
+               return FR_NOT_READY;
+#if _MAX_SS != 512                                             /* Get disk sector size if needed */
+       if (disk_ioctl(fs->drive, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+               return FR_NO_FILESYSTEM;
+#endif
+#if !_FS_READONLY
+       if (chk_wp && (stat & STA_PROTECT))     /* Check disk write protection if needed */
+               return FR_WRITE_PROTECTED;
+#endif
+       /* Search FAT partition on the drive */
+       fmt = check_fs(fs, bsect = 0);          /* Check sector 0 as an SFD format */
+       if (fmt == 1) {                                         /* Not an FAT boot record, it may be patitioned */
+               /* Check a partition listed in top of the partition table */
+               tbl = &fs->win[MBR_Table + LD2PT(vol) * 16];    /* Partition table */
+               if (tbl[4]) {                                                                   /* Is the partition existing? */
+                       bsect = LD_DWORD(&tbl[8]);                                      /* Partition offset in LBA */
+                       fmt = check_fs(fs, bsect);                                      /* Check the partition */
+               }
+       }
+       if (fmt == 3) return FR_DISK_ERR;
+       if (fmt || LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs))   /* No valid FAT patition is found */
+               return FR_NO_FILESYSTEM;
+
+       /* Initialize the file system object */
+       fsize = LD_WORD(fs->win+BPB_FATSz16);                           /* Number of sectors per FAT */
+       if (!fsize) fsize = LD_DWORD(fs->win+BPB_FATSz32);
+       fs->sects_fat = fsize;
+       fs->n_fats = fs->win[BPB_NumFATs];                                      /* Number of FAT copies */
+       fsize *= fs->n_fats;                                                            /* (Number of sectors in FAT area) */
+       fs->fatbase = bsect + LD_WORD(fs->win+BPB_RsvdSecCnt); /* FAT start sector (lba) */
+       fs->csize = fs->win[BPB_SecPerClus];                            /* Number of sectors per cluster */
+       fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt);        /* Nmuber of root directory entries */
+       tsect = LD_WORD(fs->win+BPB_TotSec16);                          /* Number of sectors on the volume */
+       if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
+       fs->max_clust = mclst = (tsect                                          /* Last cluster# + 1 (Number of clusters + 2) */
+               - LD_WORD(fs->win+BPB_RsvdSecCnt) - fsize - fs->n_rootdir / (SS(fs)/32)
+               ) / fs->csize + 2;
+
+       fmt = FS_FAT12;                                                                         /* Determine the FAT sub type */
+       if (mclst >= 0xFF7) fmt = FS_FAT16;                                     /* Number of clusters >= 0xFF5 */
+       if (mclst >= 0xFFF7) fmt = FS_FAT32;                            /* Number of clusters >= 0xFFF5 */
+
+       if (fmt == FS_FAT32)
+               fs->dirbase = LD_DWORD(fs->win+BPB_RootClus);   /* Root directory start cluster */
+       else
+               fs->dirbase = fs->fatbase + fsize;                              /* Root directory start sector (lba) */
+       fs->database = fs->fatbase + fsize + fs->n_rootdir / (SS(fs)/32);       /* Data start sector (lba) */
+
+#if !_FS_READONLY
+       /* Initialize allocation information */
+       fs->free_clust = 0xFFFFFFFF;
+       fs->wflag = 0;
+       /* Get fsinfo if needed */
+       if (fmt == FS_FAT32) {
+               fs->fsi_flag = 0;
+               fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
+               if (disk_read(fs->drive, fs->win, fs->fsi_sector, 1) == RES_OK &&
+                       LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
+                       LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
+                       LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
+                       fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
+                       fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
+               }
+       }
+#endif
+       fs->fs_type = fmt;              /* FAT sub-type */
+       fs->winsect = 0;                /* Invalidate sector cache */
+#if _FS_RPATH
+       fs->cdir = 0;                   /* Current directory (root dir) */
+#endif
+       fs->id = ++Fsid;                /* File system mount ID */
+
+       return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Check if the file/dir object is valid or not                          */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT validate (     /* FR_OK(0): The object is valid, !=0: Invalid */
+       FATFS *fs,              /* Pointer to the file system object */
+       WORD id                 /* Member id of the target object to be checked */
+)
+{
+       if (!fs || !fs->fs_type || fs->id != id)
+               return FR_INVALID_OBJECT;
+
+       ENTER_FF(fs);           /* Lock file system */
+
+       if (disk_status(fs->drive) & STA_NOINIT)
+               return FR_NOT_READY;
+
+       return FR_OK;
+}
+
+
+
+
+/*--------------------------------------------------------------------------
+
+   Public Functions
+
+--------------------------------------------------------------------------*/
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Mount/Unmount a Locical Drive                                         */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mount (
+       BYTE vol,               /* Logical drive number to be mounted/unmounted */
+       FATFS *fs               /* Pointer to new file system object (NULL for unmount)*/
+)
+{
+       FATFS *rfs;
+
+
+       if (vol >= _DRIVES)                             /* Check if the drive number is valid */
+               return FR_INVALID_DRIVE;
+       rfs = FatFs[vol];                               /* Get current fs object */
+
+       if (rfs) {
+#if _FS_REENTRANT                                      /* Discard sync object of the current volume */
+               if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
+#endif
+               rfs->fs_type = 0;                       /* Clear old fs object */
+       }
+
+       if (fs) {
+               fs->fs_type = 0;                        /* Clear new fs object */
+#if _FS_REENTRANT                                      /* Create sync object for the new volume */
+               if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
+#endif
+       }
+       FatFs[vol] = fs;                                /* Register new fs object */
+
+       return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Open or Create a File                                                 */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_open (
+       FIL *fp,                        /* Pointer to the blank file object */
+       const XCHAR *path,      /* Pointer to the file name */
+       BYTE mode                       /* Access mode and file open mode flags */
+)
+{
+       FRESULT res;
+       DIR dj;
+       NAMEBUF(sfn, lfn);
+       BYTE *dir;
+
+
+       fp->fs = NULL;          /* Clear file object */
+#if !_FS_READONLY
+       mode &= (FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW);
+       res = chk_mounted(&path, &dj.fs, (BYTE)(mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)));
+#else
+       mode &= FA_READ;
+       res = chk_mounted(&path, &dj.fs, 0);
+#endif
+       if (res != FR_OK) LEAVE_FF(dj.fs, res);
+       INITBUF(dj, sfn, lfn);
+       res = follow_path(&dj, path);   /* Follow the file path */
+
+#if !_FS_READONLY
+       /* Create or Open a file */
+       if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
+               DWORD ps, cl;
+
+               if (res != FR_OK) {                     /* No file, create new */
+                       if (res == FR_NO_FILE)  /* There is no file to open, create a new entry */
+                               res = dir_register(&dj);
+                       if (res != FR_OK) LEAVE_FF(dj.fs, res);
+                       mode |= FA_CREATE_ALWAYS;
+                       dir = dj.dir;                   /* Created entry (SFN entry) */
+               }
+               else {                                          /* Any object is already existing */
+                       if (mode & FA_CREATE_NEW)                       /* Cannot create new */
+                               LEAVE_FF(dj.fs, FR_EXIST);
+                       dir = dj.dir;
+                       if (!dir || (dir[DIR_Attr] & (AM_RDO | AM_DIR)))        /* Cannot overwrite it (R/O or DIR) */
+                               LEAVE_FF(dj.fs, FR_DENIED);
+                       if (mode & FA_CREATE_ALWAYS) {          /* Resize it to zero on over write mode */
+                               cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);    /* Get start cluster */
+                               ST_WORD(dir+DIR_FstClusHI, 0);  /* cluster = 0 */
+                               ST_WORD(dir+DIR_FstClusLO, 0);
+                               ST_DWORD(dir+DIR_FileSize, 0);  /* size = 0 */
+                               dj.fs->wflag = 1;
+                               ps = dj.fs->winsect;                    /* Remove the cluster chain */
+                               if (cl) {
+                                       res = remove_chain(dj.fs, cl);
+                                       if (res) LEAVE_FF(dj.fs, res);
+                                       dj.fs->last_clust = cl - 1;     /* Reuse the cluster hole */
+                               }
+                               res = move_window(dj.fs, ps);
+                               if (res != FR_OK) LEAVE_FF(dj.fs, res);
+                       }
+               }
+               if (mode & FA_CREATE_ALWAYS) {
+                       dir[DIR_Attr] = 0;                                      /* Reset attribute */
+                       ps = get_fattime();
+                       ST_DWORD(dir+DIR_CrtTime, ps);          /* Created time */
+                       dj.fs->wflag = 1;
+                       mode |= FA__WRITTEN;                            /* Set file changed flag */
+               }
+       }
+       /* Open an existing file */
+       else {
+#endif /* !_FS_READONLY */
+               if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
+               dir = dj.dir;
+               if (!dir || (dir[DIR_Attr] & AM_DIR))   /* It is a directory */
+                       LEAVE_FF(dj.fs, FR_NO_FILE);
+#if !_FS_READONLY
+               if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+                       LEAVE_FF(dj.fs, FR_DENIED);
+       }
+       fp->dir_sect = dj.fs->winsect;          /* Pointer to the directory entry */
+       fp->dir_ptr = dj.dir;
+#endif
+       fp->flag = mode;                                        /* File access mode */
+       fp->org_clust =                                         /* File start cluster */
+               ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+       fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
+       fp->fptr = 0; fp->csect = 255;          /* File pointer */
+       fp->dsect = 0;
+       fp->fs = dj.fs; fp->id = dj.fs->id;     /* Owner file system object of the file */
+
+       LEAVE_FF(dj.fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read File                                                             */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_read (
+       FIL *fp,                /* Pointer to the file object */
+       void *buff,             /* Pointer to data buffer */
+       UINT btr,               /* Number of bytes to read */
+       UINT *br                /* Pointer to number of bytes read */
+)
+{
+       FRESULT res;
+       DWORD clst, sect, remain;
+       UINT rcnt, cc;
+       BYTE *rbuff = buff;
+
+
+       *br = 0;        /* Initialize bytes read */
+
+       res = validate(fp->fs, fp->id);                                 /* Check validity of the object */
+       if (res != FR_OK) LEAVE_FF(fp->fs, res);
+       if (fp->flag & FA__ERROR)                                               /* Check abort flag */
+               LEAVE_FF(fp->fs, FR_INT_ERR);
+       if (!(fp->flag & FA_READ))                                              /* Check access mode */
+               LEAVE_FF(fp->fs, FR_DENIED);
+       remain = fp->fsize - fp->fptr;
+       if (btr > remain) btr = (UINT)remain;                   /* Truncate btr by remaining bytes */
+
+       for ( ;  btr;                                                                   /* Repeat until all data transferred */
+               rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
+               if ((fp->fptr % SS(fp->fs)) == 0) {                     /* On the sector boundary? */
+                       if (fp->csect >= fp->fs->csize) {               /* On the cluster boundary? */
+                               clst = (fp->fptr == 0) ?                        /* On the top of the file? */
+                                       fp->org_clust : get_fat(fp->fs, fp->curr_clust);
+                               if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+                               fp->curr_clust = clst;                          /* Update current cluster */
+                               fp->csect = 0;                                          /* Reset sector offset in the cluster */
+                       }
+                       sect = clust2sect(fp->fs, fp->curr_clust);      /* Get current sector */
+                       if (!sect) ABORT(fp->fs, FR_INT_ERR);
+                       sect += fp->csect;
+                       cc = btr / SS(fp->fs);                                  /* When remaining bytes >= sector size, */
+                       if (cc) {                                                               /* Read maximum contiguous sectors directly */
+                               if (fp->csect + cc > fp->fs->csize)     /* Clip at cluster boundary */
+                                       cc = fp->fs->csize - fp->csect;
+                               if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)
+                                       ABORT(fp->fs, FR_DISK_ERR);
+#if !_FS_READONLY && _FS_MINIMIZE <= 2
+#if _FS_TINY
+                               if (fp->fs->wflag && fp->fs->winsect - sect < cc)               /* Replace one of the read sectors with cached data if it contains a dirty sector */
+                                       mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
+#else
+                               if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)    /* Replace one of the read sectors with cached data if it contains a dirty sector */
+                                       mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
+#endif
+#endif
+                               fp->csect += (BYTE)cc;                          /* Next sector address in the cluster */
+                               rcnt = SS(fp->fs) * cc;                         /* Number of bytes transferred */
+                               continue;
+                       }
+#if !_FS_TINY
+#if !_FS_READONLY
+                       if (fp->flag & FA__DIRTY) {                     /* Write sector I/O buffer if needed */
+                               if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+                                       ABORT(fp->fs, FR_DISK_ERR);
+                               fp->flag &= ~FA__DIRTY;
+                       }
+#endif
+                       if (fp->dsect != sect) {                        /* Fill sector buffer with file data */
+                               if (disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+                                       ABORT(fp->fs, FR_DISK_ERR);
+                       }
+#endif
+                       fp->dsect = sect;
+                       fp->csect++;                                                    /* Next sector address in the cluster */
+               }
+               rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));    /* Get partial sector data from sector buffer */
+               if (rcnt > btr) rcnt = btr;
+#if _FS_TINY
+               if (move_window(fp->fs, fp->dsect))                     /* Move sector window */
+                       ABORT(fp->fs, FR_DISK_ERR);
+               mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt);      /* Pick partial sector */
+#else
+               mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt);  /* Pick partial sector */
+#endif
+       }
+
+       LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Write File                                                            */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_write (
+       FIL *fp,                        /* Pointer to the file object */
+       const void *buff,       /* Pointer to the data to be written */
+       UINT btw,                       /* Number of bytes to write */
+       UINT *bw                        /* Pointer to number of bytes written */
+)
+{
+       FRESULT res;
+       DWORD clst, sect;
+       UINT wcnt, cc;
+       const BYTE *wbuff = buff;
+
+
+       *bw = 0;        /* Initialize bytes written */
+
+       res = validate(fp->fs, fp->id);                                 /* Check validity of the object */
+       if (res != FR_OK) LEAVE_FF(fp->fs, res);
+       if (fp->flag & FA__ERROR)                                               /* Check abort flag */
+               LEAVE_FF(fp->fs, FR_INT_ERR);
+       if (!(fp->flag & FA_WRITE))                                             /* Check access mode */
+               LEAVE_FF(fp->fs, FR_DENIED);
+       if (fp->fsize + btw < fp->fsize) btw = 0;               /* File size cannot reach 4GB */
+
+       for ( ;  btw;                                                                   /* Repeat until all data transferred */
+               wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
+               if ((fp->fptr % SS(fp->fs)) == 0) {                     /* On the sector boundary? */
+                       if (fp->csect >= fp->fs->csize) {               /* On the cluster boundary? */
+                               if (fp->fptr == 0) {                            /* On the top of the file? */
+                                       clst = fp->org_clust;                   /* Follow from the origin */
+                                       if (clst == 0)                                  /* When there is no cluster chain, */
+                                               fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
+                               } else {                                                        /* Middle or end of the file */
+                                       clst = create_chain(fp->fs, fp->curr_clust);                    /* Follow or streach cluster chain */
+                               }
+                               if (clst == 0) break;                           /* Could not allocate a new cluster (disk full) */
+                               if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+                               fp->curr_clust = clst;                          /* Update current cluster */
+                               fp->csect = 0;                                          /* Reset sector address in the cluster */
+                       }
+#if _FS_TINY
+                       if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0))     /* Write back data buffer prior to following direct transfer */
+                               ABORT(fp->fs, FR_DISK_ERR);
+#else
+                       if (fp->flag & FA__DIRTY) {             /* Write back data buffer prior to following direct transfer */
+                               if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+                                       ABORT(fp->fs, FR_DISK_ERR);
+                               fp->flag &= ~FA__DIRTY;
+                       }
+#endif
+                       sect = clust2sect(fp->fs, fp->curr_clust);      /* Get current sector */
+                       if (!sect) ABORT(fp->fs, FR_INT_ERR);
+                       sect += fp->csect;
+                       cc = btw / SS(fp->fs);                                  /* When remaining bytes >= sector size, */
+                       if (cc) {                                                               /* Write maximum contiguous sectors directly */
+                               if (fp->csect + cc > fp->fs->csize)     /* Clip at cluster boundary */
+                                       cc = fp->fs->csize - fp->csect;
+                               if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)
+                                       ABORT(fp->fs, FR_DISK_ERR);
+#if _FS_TINY
+                               if (fp->fs->winsect - sect < cc) {      /* Refill sector cache if it gets dirty by the direct write */
+                                       mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
+                                       fp->fs->wflag = 0;
+                               }
+#else
+                               if (fp->dsect - sect < cc) {            /* Refill sector cache if it gets dirty by the direct write */
+                                       mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
+                                       fp->flag &= ~FA__DIRTY;
+                               }
+#endif
+                               fp->csect += (BYTE)cc;                          /* Next sector address in the cluster */
+                               wcnt = SS(fp->fs) * cc;                         /* Number of bytes transferred */
+                               continue;
+                       }
+#if _FS_TINY
+                       if (fp->fptr >= fp->fsize) {                    /* Avoid silly buffer filling at growing edge */
+                               if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
+                               fp->fs->winsect = sect;
+                       }
+#else
+                       if (fp->dsect != sect) {                                /* Fill sector buffer with file data */
+                               if (fp->fptr < fp->fsize &&
+                                       disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+                                               ABORT(fp->fs, FR_DISK_ERR);
+                       }
+#endif
+                       fp->dsect = sect;
+                       fp->csect++;                                                    /* Next sector address in the cluster */
+               }
+               wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));    /* Put partial sector into file I/O buffer */
+               if (wcnt > btw) wcnt = btw;
+#if _FS_TINY
+               if (move_window(fp->fs, fp->dsect))                     /* Move sector window */
+                       ABORT(fp->fs, FR_DISK_ERR);
+               mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt);      /* Fit partial sector */
+               fp->fs->wflag = 1;
+#else
+               mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt);  /* Fit partial sector */
+               fp->flag |= FA__DIRTY;
+#endif
+       }
+
+       if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
+       fp->flag |= FA__WRITTEN;                                                /* Set file changed flag */
+
+       LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Synchronize the File Object                                           */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_sync (
+       FIL *fp         /* Pointer to the file object */
+)
+{
+       FRESULT res;
+       DWORD tim;
+       BYTE *dir;
+
+
+       res = validate(fp->fs, fp->id);         /* Check validity of the object */
+       if (res == FR_OK) {
+               if (fp->flag & FA__WRITTEN) {   /* Has the file been written? */
+#if !_FS_TINY  /* Write-back dirty buffer */
+                       if (fp->flag & FA__DIRTY) {
+                               if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+                                       LEAVE_FF(fp->fs, FR_DISK_ERR);
+                               fp->flag &= ~FA__DIRTY;
+                       }
+#endif
+                       /* Update the directory entry */
+                       res = move_window(fp->fs, fp->dir_sect);
+                       if (res == FR_OK) {
+                               dir = fp->dir_ptr;
+                               dir[DIR_Attr] |= AM_ARC;                                        /* Set archive bit */
+                               ST_DWORD(dir+DIR_FileSize, fp->fsize);          /* Update file size */
+                               ST_WORD(dir+DIR_FstClusLO, fp->org_clust);      /* Update start cluster */
+                               ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
+                               tim = get_fattime();                    /* Updated time */
+                               ST_DWORD(dir+DIR_WrtTime, tim);
+                               fp->flag &= ~FA__WRITTEN;
+                               fp->fs->wflag = 1;
+                               res = sync(fp->fs);
+                       }
+               }
+       }
+
+       LEAVE_FF(fp->fs, res);
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close File                                                            */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_close (
+       FIL *fp         /* Pointer to the file object to be closed */
+)
+{
+       FRESULT res;
+
+
+#if _FS_READONLY
+       res = validate(fp->fs, fp->id);
+       if (res == FR_OK) fp->fs = NULL;
+       LEAVE_FF(fp->fs, res);
+#else
+       res = f_sync(fp);
+       if (res == FR_OK) fp->fs = NULL;
+       return res;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Current Drive/Directory                                        */
+/*-----------------------------------------------------------------------*/
+
+#if _FS_RPATH
+
+FRESULT f_chdrive (
+       BYTE drv                /* Drive number */
+)
+{
+       if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+
+       Drive = drv;
+
+       return FR_OK;
+}
+
+
+
+
+FRESULT f_chdir (
+       const XCHAR *path       /* Pointer to the directory path */
+)
+{
+       FRESULT res;
+       DIR dj;
+       NAMEBUF(sfn, lfn);
+       BYTE *dir;
+
+
+       res = chk_mounted(&path, &dj.fs, 0);
+       if (res == FR_OK) {
+               INITBUF(dj, sfn, lfn);
+               res = follow_path(&dj, path);           /* Follow the file path */
+               if (res == FR_OK) {                                     /* Follow completed */
+                       dir = dj.dir;                                   /* Pointer to the entry */
+                       if (!dir) {
+                               dj.fs->cdir = 0;                        /* No entry (root dir) */
+                       } else {
+                               if (dir[DIR_Attr] & AM_DIR)     /* Reached to the dir */
+                                       dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+                               else
+                                       res = FR_NO_PATH;               /* Could not reach the dir (it is a file) */
+                       }
+               }
+               if (res == FR_NO_FILE) res = FR_NO_PATH;
+       }
+
+       LEAVE_FF(dj.fs, res);
+}
+
+#endif
+
+
+
+#if _FS_MINIMIZE <= 2
+/*-----------------------------------------------------------------------*/
+/* Seek File R/W Pointer                                                 */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_lseek (
+       FIL *fp,                /* Pointer to the file object */
+       DWORD ofs               /* File pointer from top of file */
+)
+{
+       FRESULT res;
+       DWORD clst, bcs, nsect, ifptr;
+
+
+       res = validate(fp->fs, fp->id);         /* Check validity of the object */
+       if (res != FR_OK) LEAVE_FF(fp->fs, res);
+       if (fp->flag & FA__ERROR)                       /* Check abort flag */
+               LEAVE_FF(fp->fs, FR_INT_ERR);
+       if (ofs > fp->fsize                                     /* In read-only mode, clip offset with the file size */
+#if !_FS_READONLY
+                && !(fp->flag & FA_WRITE)
+#endif
+               ) ofs = fp->fsize;
+
+       ifptr = fp->fptr;
+       fp->fptr = nsect = 0; fp->csect = 255;
+       if (ofs > 0) {
+               bcs = (DWORD)fp->fs->csize * SS(fp->fs);        /* Cluster size (byte) */
+               if (ifptr > 0 &&
+                       (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
+                       fp->fptr = (ifptr - 1) & ~(bcs - 1);    /* start from the current cluster */
+                       ofs -= fp->fptr;
+                       clst = fp->curr_clust;
+               } else {                                                                        /* When seek to back cluster, */
+                       clst = fp->org_clust;                                   /* start from the first cluster */
+#if !_FS_READONLY
+                       if (clst == 0) {                                                /* If no cluster chain, create a new chain */
+                               clst = create_chain(fp->fs, 0);
+                               if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+                               fp->org_clust = clst;
+                       }
+#endif
+                       fp->curr_clust = clst;
+               }
+               if (clst != 0) {
+                       while (ofs > bcs) {                                             /* Cluster following loop */
+#if !_FS_READONLY
+                               if (fp->flag & FA_WRITE) {                      /* Check if in write mode or not */
+                                       clst = create_chain(fp->fs, clst);      /* Force streached if in write mode */
+                                       if (clst == 0) {                                /* When disk gets full, clip file size */
+                                               ofs = bcs; break;
+                                       }
+                               } else
+#endif
+                                       clst = get_fat(fp->fs, clst);   /* Follow cluster chain if not in write mode */
+                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+                               if (clst <= 1 || clst >= fp->fs->max_clust) ABORT(fp->fs, FR_INT_ERR);
+                               fp->curr_clust = clst;
+                               fp->fptr += bcs;
+                               ofs -= bcs;
+                       }
+                       fp->fptr += ofs;
+                       fp->csect = (BYTE)(ofs / SS(fp->fs));   /* Sector offset in the cluster */
+                       if (ofs % SS(fp->fs)) {
+                               nsect = clust2sect(fp->fs, clst);       /* Current sector */
+                               if (!nsect) ABORT(fp->fs, FR_INT_ERR);
+                               nsect += fp->csect;
+                               fp->csect++;
+                       }
+               }
+       }
+       if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
+#if !_FS_TINY
+#if !_FS_READONLY
+               if (fp->flag & FA__DIRTY) {                     /* Write-back dirty buffer if needed */
+                       if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+                               ABORT(fp->fs, FR_DISK_ERR);
+                       fp->flag &= ~FA__DIRTY;
+               }
+#endif
+               if (disk_read(fp->fs->drive, fp->buf, nsect, 1) != RES_OK)
+                       ABORT(fp->fs, FR_DISK_ERR);
+#endif
+               fp->dsect = nsect;
+       }
+#if !_FS_READONLY
+       if (fp->fptr > fp->fsize) {                     /* Set changed flag if the file size is extended */
+               fp->fsize = fp->fptr;
+               fp->flag |= FA__WRITTEN;
+       }
+#endif
+
+       LEAVE_FF(fp->fs, res);
+}
+
+
+
+
+#if _FS_MINIMIZE <= 1
+/*-----------------------------------------------------------------------*/
+/* Create a Directroy Object                                             */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_opendir (
+       DIR *dj,                        /* Pointer to directory object to create */
+       const XCHAR *path       /* Pointer to the directory path */
+)
+{
+       FRESULT res;
+       NAMEBUF(sfn, lfn);
+       BYTE *dir;
+
+
+       res = chk_mounted(&path, &dj->fs, 0);
+       if (res == FR_OK) {
+               INITBUF((*dj), sfn, lfn);
+               res = follow_path(dj, path);                    /* Follow the path to the directory */
+               if (res == FR_OK) {                                             /* Follow completed */
+                       dir = dj->dir;
+                       if (dir) {                                                      /* It is not the root dir */
+                               if (dir[DIR_Attr] & AM_DIR) {   /* The object is a directory */
+                                       dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+                               } else {                                                /* The object is not a directory */
+                                       res = FR_NO_PATH;
+                               }
+                       }
+                       if (res == FR_OK) {
+                               dj->id = dj->fs->id;
+                               res = dir_seek(dj, 0);                  /* Rewind dir */
+                       }
+               }
+               if (res == FR_NO_FILE) res = FR_NO_PATH;
+       }
+
+       LEAVE_FF(dj->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Directory Entry in Sequense                                      */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_readdir (
+       DIR *dj,                        /* Pointer to the open directory object */
+       FILINFO *fno            /* Pointer to file information to return */
+)
+{
+       FRESULT res;
+       NAMEBUF(sfn, lfn);
+
+
+       res = validate(dj->fs, dj->id);                 /* Check validity of the object */
+       if (res == FR_OK) {
+               INITBUF((*dj), sfn, lfn);
+               if (!fno) {
+                       res = dir_seek(dj, 0);
+               } else {
+                       res = dir_read(dj);
+                       if (res == FR_NO_FILE) {
+                               dj->sect = 0;
+                               res = FR_OK;
+                       }
+                       if (res == FR_OK) {                             /* A valid entry is found */
+                               get_fileinfo(dj, fno);          /* Get the object information */
+                               res = dir_next(dj, FALSE);      /* Increment index for next */
+                               if (res == FR_NO_FILE) {
+                                       dj->sect = 0;
+                                       res = FR_OK;
+                               }
+                       }
+               }
+       }
+
+       LEAVE_FF(dj->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE == 0
+/*-----------------------------------------------------------------------*/
+/* Get File Status                                                       */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_stat (
+       const XCHAR *path,      /* Pointer to the file path */
+       FILINFO *fno            /* Pointer to file information to return */
+)
+{
+       FRESULT res;
+       DIR dj;
+       NAMEBUF(sfn, lfn);
+
+
+       res = chk_mounted(&path, &dj.fs, 0);
+       if (res == FR_OK) {
+               INITBUF(dj, sfn, lfn);
+               res = follow_path(&dj, path);   /* Follow the file path */
+               if (res == FR_OK) {                             /* Follwo completed */
+                       if (dj.dir)     /* Found an object */
+                               get_fileinfo(&dj, fno);
+                       else            /* It is root dir */
+                               res = FR_INVALID_NAME;
+               }
+       }
+
+       LEAVE_FF(dj.fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Get Number of Free Clusters                                           */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getfree (
+       const XCHAR *path,      /* Pointer to the logical drive number (root dir) */
+       DWORD *nclst,           /* Pointer to the variable to return number of free clusters */
+       FATFS **fatfs           /* Pointer to pointer to corresponding file system object to return */
+)
+{
+       FRESULT res;
+       DWORD n, clst, sect, stat;
+       UINT i;
+       BYTE fat, *p;
+
+
+       /* Get drive number */
+       res = chk_mounted(&path, fatfs, 0);
+       if (res != FR_OK) LEAVE_FF(*fatfs, res);
+
+       /* If number of free cluster is valid, return it without cluster scan. */
+       if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {
+               *nclst = (*fatfs)->free_clust;
+               LEAVE_FF(*fatfs, FR_OK);
+       }
+
+       /* Get number of free clusters */
+       fat = (*fatfs)->fs_type;
+       n = 0;
+       if (fat == FS_FAT12) {
+               clst = 2;
+               do {
+                       stat = get_fat(*fatfs, clst);
+                       if (stat == 0xFFFFFFFF) LEAVE_FF(*fatfs, FR_DISK_ERR);
+                       if (stat == 1) LEAVE_FF(*fatfs, FR_INT_ERR);
+                       if (stat == 0) n++;
+               } while (++clst < (*fatfs)->max_clust);
+       } else {
+               clst = (*fatfs)->max_clust;
+               sect = (*fatfs)->fatbase;
+               i = 0; p = 0;
+               do {
+                       if (!i) {
+                               res = move_window(*fatfs, sect++);
+                               if (res != FR_OK)
+                                       LEAVE_FF(*fatfs, res);
+                               p = (*fatfs)->win;
+                               i = SS(*fatfs);
+                       }
+                       if (fat == FS_FAT16) {
+                               if (LD_WORD(p) == 0) n++;
+                               p += 2; i -= 2;
+                       } else {
+                               if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
+                               p += 4; i -= 4;
+                       }
+               } while (--clst);
+       }
+       (*fatfs)->free_clust = n;
+       if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+       *nclst = n;
+
+       LEAVE_FF(*fatfs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Truncate File                                                         */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_truncate (
+       FIL *fp         /* Pointer to the file object */
+)
+{
+       FRESULT res;
+       DWORD ncl;
+
+
+       res = validate(fp->fs, fp->id);         /* Check validity of the object */
+       if (res != FR_OK) LEAVE_FF(fp->fs, res);
+       if (fp->flag & FA__ERROR)                       /* Check abort flag */
+               LEAVE_FF(fp->fs, FR_INT_ERR);
+       if (!(fp->flag & FA_WRITE))                     /* Check access mode */
+               LEAVE_FF(fp->fs, FR_DENIED);
+
+       if (fp->fsize > fp->fptr) {
+               fp->fsize = fp->fptr;   /* Set file size to current R/W point */
+               fp->flag |= FA__WRITTEN;
+               if (fp->fptr == 0) {    /* When set file size to zero, remove entire cluster chain */
+                       res = remove_chain(fp->fs, fp->org_clust);
+                       fp->org_clust = 0;
+               } else {                                /* When truncate a part of the file, remove remaining clusters */
+                       ncl = get_fat(fp->fs, fp->curr_clust);
+                       res = FR_OK;
+                       if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+                       if (ncl == 1) res = FR_INT_ERR;
+                       if (res == FR_OK && ncl < fp->fs->max_clust) {
+                               res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
+                               if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+                       }
+               }
+       }
+       if (res != FR_OK) fp->flag |= FA__ERROR;
+
+       LEAVE_FF(fp->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Delete a File or Directory                                            */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_unlink (
+       const XCHAR *path               /* Pointer to the file or directory path */
+)
+{
+       FRESULT res;
+       DIR dj, sdj;
+       NAMEBUF(sfn, lfn);
+       BYTE *dir;
+       DWORD dclst;
+
+
+       res = chk_mounted(&path, &dj.fs, 1);
+       if (res != FR_OK) LEAVE_FF(dj.fs, res);
+
+       INITBUF(dj, sfn, lfn);
+       res = follow_path(&dj, path);                   /* Follow the file path */
+       if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+               res = FR_INVALID_NAME;
+       if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
+
+       dir = dj.dir;
+       if (!dir)                                                               /* Is it the root directory? */
+               LEAVE_FF(dj.fs, FR_INVALID_NAME);
+       if (dir[DIR_Attr] & AM_RDO)                             /* Is it a R/O object? */
+               LEAVE_FF(dj.fs, FR_DENIED);
+       dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+
+       if (dir[DIR_Attr] & AM_DIR) {                   /* It is a sub-directory */
+               if (dclst < 2) LEAVE_FF(dj.fs, FR_INT_ERR);
+               mem_cpy(&sdj, &dj, sizeof(DIR));        /* Check if the sub-dir is empty or not */
+               sdj.sclust = dclst;
+               res = dir_seek(&sdj, 2);
+               if (res != FR_OK) LEAVE_FF(dj.fs, res);
+               res = dir_read(&sdj);
+               if (res == FR_OK) res = FR_DENIED;      /* Not empty sub-dir */
+               if (res != FR_NO_FILE) LEAVE_FF(dj.fs, res);
+       }
+
+       res = dir_remove(&dj);                                  /* Remove directory entry */
+       if (res == FR_OK) {
+               if (dclst)
+                       res = remove_chain(dj.fs, dclst);       /* Remove the cluster chain */
+               if (res == FR_OK) res = sync(dj.fs);
+       }
+
+       LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create a Directory                                                    */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mkdir (
+       const XCHAR *path               /* Pointer to the directory path */
+)
+{
+       FRESULT res;
+       DIR dj;
+       NAMEBUF(sfn, lfn);
+       BYTE *dir, n;
+       DWORD dsect, dclst, pclst, tim;
+
+
+       res = chk_mounted(&path, &dj.fs, 1);
+       if (res != FR_OK) LEAVE_FF(dj.fs, res);
+
+       INITBUF(dj, sfn, lfn);
+       res = follow_path(&dj, path);                   /* Follow the file path */
+       if (res == FR_OK) res = FR_EXIST;               /* Any file or directory is already existing */
+       if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
+               res = FR_INVALID_NAME;
+       if (res != FR_NO_FILE)                                  /* Any error occured */
+               LEAVE_FF(dj.fs, res);
+
+       dclst = create_chain(dj.fs, 0);                 /* Allocate a new cluster for new directory table */
+       res = FR_OK;
+       if (dclst == 0) res = FR_DENIED;
+       if (dclst == 1) res = FR_INT_ERR;
+       if (dclst == 0xFFFFFFFF) res = FR_DISK_ERR;
+       if (res == FR_OK)
+               res = move_window(dj.fs, 0);
+       if (res != FR_OK) LEAVE_FF(dj.fs, res);
+       dsect = clust2sect(dj.fs, dclst);
+
+       dir = dj.fs->win;                                               /* Initialize the new directory table */
+       mem_set(dir, 0, SS(dj.fs));
+       mem_set(dir+DIR_Name, ' ', 8+3);                /* Create "." entry */
+       dir[DIR_Name] = '.';
+       dir[DIR_Attr] = AM_DIR;
+       tim = get_fattime();
+       ST_DWORD(dir+DIR_WrtTime, tim);
+       ST_WORD(dir+DIR_FstClusLO, dclst);
+       ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
+       mem_cpy(dir+32, dir, 32);                       /* Create ".." entry */
+       dir[33] = '.';
+       pclst = dj.sclust;
+       if (dj.fs->fs_type == FS_FAT32 && pclst == dj.fs->dirbase)
+               pclst = 0;
+       ST_WORD(dir+32+DIR_FstClusLO, pclst);
+       ST_WORD(dir+32+DIR_FstClusHI, pclst >> 16);
+       for (n = 0; n < dj.fs->csize; n++) {    /* Write dot entries and clear left sectors */
+               dj.fs->winsect = dsect++;
+               dj.fs->wflag = 1;
+               res = move_window(dj.fs, 0);
+               if (res) LEAVE_FF(dj.fs, res);
+               mem_set(dir, 0, SS(dj.fs));
+       }
+
+       res = dir_register(&dj);
+       if (res != FR_OK) {
+               remove_chain(dj.fs, dclst);
+       } else {
+               dir = dj.dir;
+               dir[DIR_Attr] = AM_DIR;                                 /* Attribute */
+               ST_DWORD(dir+DIR_WrtTime, tim);                 /* Crated time */
+               ST_WORD(dir+DIR_FstClusLO, dclst);              /* Table start cluster */
+               ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
+               dj.fs->wflag = 1;
+               res = sync(dj.fs);
+       }
+
+       LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change File Attribute                                                 */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_chmod (
+       const XCHAR *path,      /* Pointer to the file path */
+       BYTE value,                     /* Attribute bits */
+       BYTE mask                       /* Attribute mask to change */
+)
+{
+       FRESULT res;
+       DIR dj;
+       NAMEBUF(sfn, lfn);
+       BYTE *dir;
+
+
+       res = chk_mounted(&path, &dj.fs, 1);
+       if (res == FR_OK) {
+               INITBUF(dj, sfn, lfn);
+               res = follow_path(&dj, path);           /* Follow the file path */
+               if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+                       res = FR_INVALID_NAME;
+               if (res == FR_OK) {
+                       dir = dj.dir;
+                       if (!dir) {                                             /* Is it a root directory? */
+                               res = FR_INVALID_NAME;
+                       } else {                                                /* File or sub directory */
+                               mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC;    /* Valid attribute mask */
+                               dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
+                               dj.fs->wflag = 1;
+                               res = sync(dj.fs);
+                       }
+               }
+       }
+
+       LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Timestamp                                                      */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_utime (
+       const XCHAR *path,      /* Pointer to the file/directory name */
+       const FILINFO *fno      /* Pointer to the timestamp to be set */
+)
+{
+       FRESULT res;
+       DIR dj;
+       NAMEBUF(sfn, lfn);
+       BYTE *dir;
+
+
+       res = chk_mounted(&path, &dj.fs, 1);
+       if (res == FR_OK) {
+               INITBUF(dj, sfn, lfn);
+               res = follow_path(&dj, path);   /* Follow the file path */
+               if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+                       res = FR_INVALID_NAME;
+               if (res == FR_OK) {
+                       dir = dj.dir;
+                       if (!dir) {                             /* Root directory */
+                               res = FR_INVALID_NAME;
+                       } else {                                /* File or sub-directory */
+                               ST_WORD(dir+DIR_WrtTime, fno->ftime);
+                               ST_WORD(dir+DIR_WrtDate, fno->fdate);
+                               dj.fs->wflag = 1;
+                               res = sync(dj.fs);
+                       }
+               }
+       }
+
+       LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Rename File/Directory                                                 */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_rename (
+       const XCHAR *path_old,  /* Pointer to the old name */
+       const XCHAR *path_new   /* Pointer to the new name */
+)
+{
+       FRESULT res;
+       DIR dj_old, dj_new;
+       NAMEBUF(sfn, lfn);
+       BYTE buf[21], *dir;
+       DWORD dw;
+
+
+       INITBUF(dj_old, sfn, lfn);
+       res = chk_mounted(&path_old, &dj_old.fs, 1);
+       if (res == FR_OK) {
+               dj_new.fs = dj_old.fs;
+               res = follow_path(&dj_old, path_old);   /* Check old object */
+               if (_FS_RPATH && res == FR_OK && (dj_old.fn[NS] & NS_DOT))
+                       res = FR_INVALID_NAME;
+       }
+       if (res != FR_OK) LEAVE_FF(dj_old.fs, res);     /* The old object is not found */
+
+       if (!dj_old.dir) LEAVE_FF(dj_old.fs, FR_NO_FILE);       /* Is root dir? */
+       mem_cpy(buf, dj_old.dir+DIR_Attr, 21);          /* Save the object information */
+
+       mem_cpy(&dj_new, &dj_old, sizeof(DIR));
+       res = follow_path(&dj_new, path_new);           /* Check new object */
+       if (res == FR_OK) res = FR_EXIST;                       /* The new object name is already existing */
+       if (res == FR_NO_FILE) {                                        /* Is it a valid path and no name collision? */
+               res = dir_register(&dj_new);                    /* Register the new object */
+               if (res == FR_OK) {
+                       dir = dj_new.dir;                                       /* Copy object information into new entry */
+                       mem_cpy(dir+13, buf+2, 19);
+                       dir[DIR_Attr] = buf[0] | AM_ARC;
+                       dj_old.fs->wflag = 1;
+                       if (dir[DIR_Attr] & AM_DIR) {           /* Update .. entry in the directory if needed */
+                               dw = clust2sect(dj_new.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
+                               if (!dw) {
+                                       res = FR_INT_ERR;
+                               } else {
+                                       res = move_window(dj_new.fs, dw);
+                                       dir = dj_new.fs->win+32;
+                                       if (res == FR_OK && dir[1] == '.') {
+                                               dw = (dj_new.fs->fs_type == FS_FAT32 && dj_new.sclust == dj_new.fs->dirbase) ? 0 : dj_new.sclust;
+                                               ST_WORD(dir+DIR_FstClusLO, dw);
+                                               ST_WORD(dir+DIR_FstClusHI, dw >> 16);
+                                               dj_new.fs->wflag = 1;
+                                       }
+                               }
+                       }
+                       if (res == FR_OK) {
+                               res = dir_remove(&dj_old);                      /* Remove old entry */
+                               if (res == FR_OK)
+                                       res = sync(dj_old.fs);
+                       }
+               }
+       }
+
+       LEAVE_FF(dj_old.fs, res);
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _FS_MINIMIZE == 0 */
+#endif /* _FS_MINIMIZE <= 1 */
+#endif /* _FS_MINIMIZE <= 2 */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Forward data to the stream directly (Available on only _FS_TINY cfg)  */
+/*-----------------------------------------------------------------------*/
+#if _USE_FORWARD && _FS_TINY
+
+FRESULT f_forward (
+       FIL *fp,                                                /* Pointer to the file object */
+       UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
+       UINT btr,                                               /* Number of bytes to forward */
+       UINT *bf                                                /* Pointer to number of bytes forwarded */
+)
+{
+       FRESULT res;
+       DWORD remain, clst, sect;
+       UINT rcnt;
+
+
+       *bf = 0;
+
+       res = validate(fp->fs, fp->id);                                 /* Check validity of the object */
+       if (res != FR_OK) LEAVE_FF(fp->fs, res);
+       if (fp->flag & FA__ERROR)                                               /* Check error flag */
+               LEAVE_FF(fp->fs, FR_INT_ERR);
+       if (!(fp->flag & FA_READ))                                              /* Check access mode */
+               LEAVE_FF(fp->fs, FR_DENIED);
+
+       remain = fp->fsize - fp->fptr;
+       if (btr > remain) btr = (UINT)remain;                   /* Truncate btr by remaining bytes */
+
+       for ( ;  btr && (*func)(NULL, 0);                               /* Repeat until all data transferred or stream becomes busy */
+               fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
+               if ((fp->fptr % SS(fp->fs)) == 0) {                     /* On the sector boundary? */
+                       if (fp->csect >= fp->fs->csize) {               /* On the cluster boundary? */
+                               clst = (fp->fptr == 0) ?                        /* On the top of the file? */
+                                       fp->org_clust : get_fat(fp->fs, fp->curr_clust);
+                               if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+                               if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+                               fp->curr_clust = clst;                          /* Update current cluster */
+                               fp->csect = 0;                                          /* Reset sector address in the cluster */
+                       }
+                       fp->csect++;                                                    /* Next sector address in the cluster */
+               }
+               sect = clust2sect(fp->fs, fp->curr_clust);      /* Get current data sector */
+               if (!sect) ABORT(fp->fs, FR_INT_ERR);
+               sect += fp->csect - 1;
+               if (move_window(fp->fs, sect))                          /* Move sector window */
+                       ABORT(fp->fs, FR_DISK_ERR);
+               fp->dsect = sect;
+               rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs));      /* Forward data from sector window */
+               if (rcnt > btr) rcnt = btr;
+               rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
+               if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
+       }
+
+       LEAVE_FF(fp->fs, FR_OK);
+}
+#endif /* _USE_FORWARD */
+
+
+
+#if _USE_MKFS && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Create File System on the Drive                                       */
+/*-----------------------------------------------------------------------*/
+#define N_ROOTDIR      512                     /* Multiple of 32 and <= 2048 */
+#define N_FATS         1                       /* 1 or 2 */
+#define MAX_SECTOR     131072000UL     /* Maximum partition size */
+#define MIN_SECTOR     2000UL          /* Minimum partition size */
+
+
+FRESULT f_mkfs (
+       BYTE drv,                       /* Logical drive number */
+       BYTE partition,         /* Partitioning rule 0:FDISK, 1:SFD */
+       WORD allocsize          /* Allocation unit size [bytes] */
+)
+{
+       static const DWORD sstbl[] = { 2048000, 1024000, 512000, 256000, 128000, 64000, 32000, 16000, 8000, 4000,   0 };
+       static const WORD cstbl[] =  {   32768,   16384,   8192,   4096,   2048, 16384,  8192,  4096, 2048, 1024, 512 };
+       BYTE fmt, m, *tbl;
+       DWORD b_part, b_fat, b_dir, b_data;             /* Area offset (LBA) */
+       DWORD n_part, n_rsv, n_fat, n_dir;              /* Area size */
+       DWORD n_clst, d, n;
+       WORD as;
+       FATFS *fs;
+       DSTATUS stat;
+
+
+       /* Check validity of the parameters */
+       if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+       if (partition >= 2) return FR_MKFS_ABORTED;
+
+       /* Check mounted drive and clear work area */
+       fs = FatFs[drv];
+       if (!fs) return FR_NOT_ENABLED;
+       fs->fs_type = 0;
+       drv = LD2PD(drv);
+
+       /* Get disk statics */
+       stat = disk_initialize(drv);
+       if (stat & STA_NOINIT) return FR_NOT_READY;
+       if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+#if _MAX_SS != 512                                             /* Get disk sector size */
+       if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
+               || SS(fs) > _MAX_SS)
+               return FR_MKFS_ABORTED;
+#endif
+       if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)
+               return FR_MKFS_ABORTED;
+       if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;
+       b_part = (!partition) ? 63 : 0;         /* Boot sector */
+       n_part -= b_part;
+       for (d = 512; d <= 32768U && d != allocsize; d <<= 1) ; /* Check validity of the allocation unit size */
+       if (d != allocsize) allocsize = 0;
+       if (!allocsize) {                                       /* Auto selection of cluster size */
+               d = n_part;
+               for (as = SS(fs); as > 512U; as >>= 1) d >>= 1;
+               for (n = 0; d < sstbl[n]; n++) ;
+               allocsize = cstbl[n];
+       }
+       if (allocsize < SS(fs)) allocsize = SS(fs);
+
+       allocsize /= SS(fs);            /* Number of sectors per cluster */
+
+       /* Pre-compute number of clusters and FAT type */
+       n_clst = n_part / allocsize;
+       fmt = FS_FAT12;
+       if (n_clst >= 0xFF5) fmt = FS_FAT16;
+       if (n_clst >= 0xFFF5) fmt = FS_FAT32;
+
+       /* Determine offset and size of FAT structure */
+       switch (fmt) {
+       case FS_FAT12:
+               n_fat = ((n_clst * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);
+               n_rsv = 1 + partition;
+               n_dir = N_ROOTDIR * 32 / SS(fs);
+               break;
+       case FS_FAT16:
+               n_fat = ((n_clst * 2) + 4 + SS(fs) - 1) / SS(fs);
+               n_rsv = 1 + partition;
+               n_dir = N_ROOTDIR * 32 / SS(fs);
+               break;
+       default:
+               n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
+               n_rsv = 33 - partition;
+               n_dir = 0;
+       }
+       b_fat = b_part + n_rsv;                 /* FATs start sector */
+       b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */
+       b_data = b_dir + n_dir;                 /* Data start sector */
+
+       /* Align data start sector to erase block boundary (for flash memory media) */
+       if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_MKFS_ABORTED;
+       n = (b_data + n - 1) & ~(n - 1);
+       n_fat += (n - b_data) / N_FATS;
+       /* b_dir and b_data are no longer used below */
+
+       /* Determine number of cluster and final check of validity of the FAT type */
+       n_clst = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;
+       if (   (fmt == FS_FAT16 && n_clst < 0xFF5)
+               || (fmt == FS_FAT32 && n_clst < 0xFFF5))
+               return FR_MKFS_ABORTED;
+
+       /* Create partition table if needed */
+       if (!partition) {
+               DWORD n_disk = b_part + n_part;
+
+               mem_set(fs->win, 0, SS(fs));
+               tbl = fs->win+MBR_Table;
+               ST_DWORD(tbl, 0x00010180);              /* Partition start in CHS */
+               if (n_disk < 63UL * 255 * 1024) {       /* Partition end in CHS */
+                       n_disk = n_disk / 63 / 255;
+                       tbl[7] = (BYTE)n_disk;
+                       tbl[6] = (BYTE)((n_disk >> 2) | 63);
+               } else {
+                       ST_WORD(&tbl[6], 0xFFFF);
+               }
+               tbl[5] = 254;
+               if (fmt != FS_FAT32)                    /* System ID */
+                       tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06;
+               else
+                       tbl[4] = 0x0c;
+               ST_DWORD(tbl+8, 63);                    /* Partition start in LBA */
+               ST_DWORD(tbl+12, n_part);               /* Partition size in LBA */
+               ST_WORD(tbl+64, 0xAA55);                /* Signature */
+               if (disk_write(drv, fs->win, 0, 1) != RES_OK)
+                       return FR_DISK_ERR;
+               partition = 0xF8;
+       } else {
+               partition = 0xF0;
+       }
+
+       /* Create boot record */
+       tbl = fs->win;                                                          /* Clear buffer */
+       mem_set(tbl, 0, SS(fs));
+       ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB);                     /* Boot code (jmp $, nop) */
+       ST_WORD(tbl+BPB_BytsPerSec, SS(fs));            /* Sector size */
+       tbl[BPB_SecPerClus] = (BYTE)allocsize;          /* Sectors per cluster */
+       ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv);                     /* Reserved sectors */
+       tbl[BPB_NumFATs] = N_FATS;                                      /* Number of FATs */
+       ST_WORD(tbl+BPB_RootEntCnt, SS(fs) / 32 * n_dir); /* Number of rootdir entries */
+       if (n_part < 0x10000) {                                         /* Number of total sectors */
+               ST_WORD(tbl+BPB_TotSec16, n_part);
+       } else {
+               ST_DWORD(tbl+BPB_TotSec32, n_part);
+       }
+       tbl[BPB_Media] = partition;                                     /* Media descripter */
+       ST_WORD(tbl+BPB_SecPerTrk, 63);                         /* Number of sectors per track */
+       ST_WORD(tbl+BPB_NumHeads, 255);                         /* Number of heads */
+       ST_DWORD(tbl+BPB_HiddSec, b_part);                      /* Hidden sectors */
+       n = get_fattime();                                                      /* Use current time as a VSN */
+       if (fmt != FS_FAT32) {
+               ST_DWORD(tbl+BS_VolID, n);                              /* Volume serial number */
+               ST_WORD(tbl+BPB_FATSz16, n_fat);                /* Number of secters per FAT */
+               tbl[BS_DrvNum] = 0x80;                                  /* Drive number */
+               tbl[BS_BootSig] = 0x29;                                 /* Extended boot signature */
+               mem_cpy(tbl+BS_VolLab, "NO NAME    FAT     ", 19);      /* Volume lavel, FAT signature */
+       } else {
+               ST_DWORD(tbl+BS_VolID32, n);                    /* Volume serial number */
+               ST_DWORD(tbl+BPB_FATSz32, n_fat);               /* Number of secters per FAT */
+               ST_DWORD(tbl+BPB_RootClus, 2);                  /* Root directory cluster (2) */
+               ST_WORD(tbl+BPB_FSInfo, 1);                             /* FSInfo record offset (bs+1) */
+               ST_WORD(tbl+BPB_BkBootSec, 6);                  /* Backup boot record offset (bs+6) */
+               tbl[BS_DrvNum32] = 0x80;                                /* Drive number */
+               tbl[BS_BootSig32] = 0x29;                               /* Extended boot signature */
+               mem_cpy(tbl+BS_VolLab32, "NO NAME    FAT32   ", 19);    /* Volume lavel, FAT signature */
+       }
+       ST_WORD(tbl+BS_55AA, 0xAA55);                           /* Signature */
+       if (SS(fs) > 512U) {
+               ST_WORD(tbl+SS(fs)-2, 0xAA55);
+       }
+       if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)
+               return FR_DISK_ERR;
+       if (fmt == FS_FAT32)
+               disk_write(drv, tbl, b_part+6, 1);
+
+       /* Initialize FAT area */
+       for (m = 0; m < N_FATS; m++) {
+               mem_set(tbl, 0, SS(fs));                /* 1st sector of the FAT  */
+               if (fmt != FS_FAT32) {
+                       n = (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
+                       n |= partition;
+                       ST_DWORD(tbl, n);                               /* Reserve cluster #0-1 (FAT12/16) */
+               } else {
+                       ST_DWORD(tbl+0, 0xFFFFFFF8);    /* Reserve cluster #0-1 (FAT32) */
+                       ST_DWORD(tbl+4, 0xFFFFFFFF);
+                       ST_DWORD(tbl+8, 0x0FFFFFFF);    /* Reserve cluster #2 for root dir */
+               }
+               if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+                       return FR_DISK_ERR;
+               mem_set(tbl, 0, SS(fs));                /* Following FAT entries are filled by zero */
+               for (n = 1; n < n_fat; n++) {
+                       if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+                               return FR_DISK_ERR;
+               }
+       }
+
+       /* Initialize Root directory */
+       m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);
+       do {
+               if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+                       return FR_DISK_ERR;
+       } while (--m);
+
+       /* Create FSInfo record if needed */
+       if (fmt == FS_FAT32) {
+               ST_WORD(tbl+BS_55AA, 0xAA55);
+               ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
+               ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
+               ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
+               ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
+               disk_write(drv, tbl, b_part+1, 1);
+               disk_write(drv, tbl, b_part+7, 1);
+       }
+
+       return (disk_ioctl(drv, CTRL_SYNC, (void*)NULL) == RES_OK) ? FR_OK : FR_DISK_ERR;
+}
+
+#endif /* _USE_MKFS && !_FS_READONLY */
+
+
+
+
+#if _USE_STRFUNC
+/*-----------------------------------------------------------------------*/
+/* Get a string from the file                                            */
+/*-----------------------------------------------------------------------*/
+char* f_gets (
+       char* buff,     /* Pointer to the string buffer to read */
+       int len,        /* Size of string buffer */
+       FIL* fil        /* Pointer to the file object */
+)
+{
+       int i = 0;
+       char *p = buff;
+       UINT rc;
+
+
+       while (i < len - 1) {                   /* Read bytes until buffer gets filled */
+               f_read(fil, p, 1, &rc);
+               if (rc != 1) break;                     /* Break when no data to read */
+#if _USE_STRFUNC >= 2
+               if (*p == '\r') continue;       /* Strip '\r' */
+#endif
+               i++;
+               if (*p++ == '\n') break;        /* Break when reached end of line */
+       }
+       *p = 0;
+       return i ? buff : NULL;                 /* When no data read (eof or error), return with error. */
+}
+
+
+
+#if !_FS_READONLY
+#include <stdarg.h>
+/*-----------------------------------------------------------------------*/
+/* Put a character to the file                                           */
+/*-----------------------------------------------------------------------*/
+int f_putc (
+       int chr,        /* A character to be output */
+       FIL* fil        /* Ponter to the file object */
+)
+{
+       UINT bw;
+       char c;
+
+
+#if _USE_STRFUNC >= 2
+       if (chr == '\n') f_putc ('\r', fil);    /* LF -> CRLF conversion */
+#endif
+       if (!fil) {     /* Special value may be used to switch the destination to any other device */
+       /*      put_console(chr);       */
+               return chr;
+       }
+       c = (char)chr;
+       f_write(fil, &c, 1, &bw);       /* Write a byte to the file */
+       return bw ? chr : EOF;          /* Return the result */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a string to the file                                              */
+/*-----------------------------------------------------------------------*/
+int f_puts (
+       const char* str,        /* Pointer to the string to be output */
+       FIL* fil                        /* Pointer to the file object */
+)
+{
+       int n;
+
+
+       for (n = 0; *str; str++, n++) {
+               if (f_putc(*str, fil) == EOF) return EOF;
+       }
+       return n;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a formatted string to the file                                    */
+/*-----------------------------------------------------------------------*/
+int f_printf (
+       FIL* fil,                       /* Pointer to the file object */
+       const char* str,        /* Pointer to the format string */
+       ...                                     /* Optional arguments... */
+)
+{
+       va_list arp;
+       UCHAR c, f, r;
+       ULONG val;
+       char s[16];
+       int i, w, res, cc;
+
+
+       va_start(arp, str);
+
+       for (cc = res = 0; cc != EOF; res += cc) {
+               c = *str++;
+               if (c == 0) break;                      /* End of string */
+               if (c != '%') {                         /* Non escape cahracter */
+                       cc = f_putc(c, fil);
+                       if (cc != EOF) cc = 1;
+                       continue;
+               }
+               w = f = 0;
+               c = *str++;
+               if (c == '0') {                         /* Flag: '0' padding */
+                       f = 1; c = *str++;
+               }
+               while (c >= '0' && c <= '9') {  /* Precision */
+                       w = w * 10 + (c - '0');
+                       c = *str++;
+               }
+               if (c == 'l') {                         /* Prefix: Size is long int */
+                       f |= 2; c = *str++;
+               }
+               if (c == 's') {                         /* Type is string */
+                       cc = f_puts(va_arg(arp, char*), fil);
+                       continue;
+               }
+               if (c == 'c') {                         /* Type is character */
+                       cc = f_putc(va_arg(arp, int), fil);
+                       if (cc != EOF) cc = 1;
+                       continue;
+               }
+               r = 0;
+               if (c == 'd') r = 10;           /* Type is signed decimal */
+               if (c == 'u') r = 10;           /* Type is unsigned decimal */
+               if (c == 'X') r = 16;           /* Type is unsigned hexdecimal */
+               if (r == 0) break;                      /* Unknown type */
+               if (f & 2) {                            /* Get the value */
+                       val = (ULONG)va_arg(arp, long);
+               } else {
+                       val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);
+               }
+               /* Put numeral string */
+               if (c == 'd') {
+                       if (val & 0x80000000) {
+                               val = 0 - val;
+                               f |= 4;
+                       }
+               }
+               i = sizeof(s) - 1; s[i] = 0;
+               do {
+                       c = (UCHAR)(val % r + '0');
+                       if (c > '9') c += 7;
+                       s[--i] = c;
+                       val /= r;
+               } while (i && val);
+               if (i && (f & 4)) s[--i] = '-';
+               w = sizeof(s) - 1 - w;
+               while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';
+               cc = f_puts(&s[i], fil);
+       }
+
+       va_end(arp);
+       return (cc == EOF) ? cc : res;
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _USE_STRFUNC */