actually sleep the vpu on arm init, added more stuff to sdhost, still broken though
authorkristina <kb@kbs-iMac.local>
Mon, 30 May 2016 13:13:38 +0000 (14:13 +0100)
committerkristina <kb@kbs-iMac.local>
Mon, 30 May 2016 13:13:38 +0000 (14:13 +0100)
23 files changed:
arm_chainloader/Makefile
arm_chainloader/chainloader.h
arm_chainloader/drivers/fatfs/00history.txt [new file with mode: 0755]
arm_chainloader/drivers/fatfs/00readme.txt [new file with mode: 0755]
arm_chainloader/drivers/fatfs/diskio.c [new file with mode: 0755]
arm_chainloader/drivers/fatfs/diskio.h [new file with mode: 0755]
arm_chainloader/drivers/fatfs/ff.c [new file with mode: 0755]
arm_chainloader/drivers/fatfs/ff.h [new file with mode: 0755]
arm_chainloader/drivers/fatfs/ffconf.h [new file with mode: 0755]
arm_chainloader/drivers/fatfs/integer.h [new file with mode: 0755]
arm_chainloader/drivers/fatfs/option/cc932.c [new file with mode: 0755]
arm_chainloader/drivers/fatfs/option/cc936.c [new file with mode: 0755]
arm_chainloader/drivers/fatfs/option/cc949.c [new file with mode: 0755]
arm_chainloader/drivers/fatfs/option/cc950.c [new file with mode: 0755]
arm_chainloader/drivers/fatfs/option/ccsbcs.c [new file with mode: 0755]
arm_chainloader/drivers/fatfs/option/syscall.c [new file with mode: 0755]
arm_chainloader/drivers/fatfs/option/unicode.c [new file with mode: 0755]
arm_chainloader/drivers/sd2.hpp
arm_chainloader/drivers/sdhost.cc
arm_chainloader/main.c
arm_chainloader/start.s
arm_loader.c
arm_monitor.c [new file with mode: 0755]

index 7427c6c..398d5cc 100755 (executable)
@@ -5,6 +5,7 @@ SRCS = \
        start.s \
        drivers/uart.c \
        drivers/cprman.cc \
+       drivers/fatfs/ff.c \
        drivers/sdhost.cc \
        ../lib/xprintf.c \
        ../lib/udelay.c \
index 63ea608..853c739 100755 (executable)
@@ -1,6 +1,7 @@
 #pragma once\r
 \r
 #include <stdint.h>\r
+#include <stddef.h>\r
 #include <lib/xprintf.h>\r
 \r
 #define printf xprintf\r
@@ -19,6 +20,12 @@ extern void udelay(uint32_t time);
 \r
 #define mfence() __sync_synchronize()\r
 \r
+#define NBBY 8\r
+\r
+#define        __BIT(__n)      \\r
+    (((uintmax_t)(__n) >= NBBY * sizeof(uintmax_t)) ? 0 : \\r
+    ((uintmax_t)1 << (uintmax_t)((__n) & (NBBY * sizeof(uintmax_t) - 1))))\r
+\r
 #ifdef __cplusplus\r
 }\r
 #endif\r
diff --git a/arm_chainloader/drivers/fatfs/00history.txt b/arm_chainloader/drivers/fatfs/00history.txt
new file mode 100755 (executable)
index 0000000..4d76198
--- /dev/null
@@ -0,0 +1,254 @@
+----------------------------------------------------------------------------\r
+  Revision history of FatFs module\r
+----------------------------------------------------------------------------\r
+\r
+R0.00 (February 26, 2006)\r
+\r
+  Prototype.\r
+\r
+\r
+\r
+R0.01 (April 29, 2006)\r
+\r
+  First stable version.\r
+\r
+\r
+\r
+R0.02 (June 01, 2006)\r
+\r
+  Added FAT12 support.\r
+  Removed unbuffered mode.\r
+  Fixed a problem on small (<32M) partition.\r
+\r
+\r
+\r
+R0.02a (June 10, 2006)\r
+\r
+  Added a configuration option (_FS_MINIMUM).\r
+\r
+\r
+\r
+R0.03 (September 22, 2006)\r
+\r
+  Added f_rename().\r
+  Changed option _FS_MINIMUM to _FS_MINIMIZE.\r
+\r
+\r
+\r
+R0.03a (December 11, 2006)\r
+\r
+  Improved cluster scan algorithm to write files fast.\r
+  Fixed f_mkdir() creates incorrect directory on FAT32.\r
+\r
+\r
+\r
+R0.04 (February 04, 2007)\r
+\r
+  Added f_mkfs().\r
+  Supported multiple drive system.\r
+  Changed some interfaces for multiple drive system.\r
+  Changed f_mountdrv() to f_mount().\r
+\r
+\r
+\r
+R0.04a (April 01, 2007)\r
+\r
+  Supported multiple partitions on a physical 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
+\r
+\r
+\r
+R0.04b (May 05, 2007)\r
+\r
+  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
+\r
+\r
+R0.05 (August 25, 2007)\r
+\r
+  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
+\r
+\r
+\r
+R0.05a (February 03, 2008)\r
+\r
+  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 without write.\r
+\r
+\r
+\r
+R0.06 (April 01, 2008)\r
+\r
+  Added fputc(), fputs(), fprintf() and fgets().\r
+  Improved performance of f_lseek() on moving to the same or following cluster.\r
+\r
+\r
+\r
+R0.07 (April 01, 2009)\r
+\r
+  Merged Tiny-FatFs as a configuration option. (_FS_TINY)\r
+  Added long file name feature. (_USE_LFN)\r
+  Added multiple code page feature. (_CODE_PAGE)\r
+  Added re-entrancy for multitask operation. (_FS_REENTRANT)\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
+\r
+\r
+\r
+R0.07a (April 14, 2009)\r
+\r
+  Septemberarated out OS dependent code on reentrant cfg.\r
+  Added multiple sector size feature.\r
+\r
+\r
+\r
+R0.07c (June 21, 2009)\r
+\r
+  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 character.\r
+\r
+\r
+\r
+R0.07e (November 03, 2009)\r
+\r
+  Septemberarated out configuration options from ff.h to ffconf.h.\r
+  Fixed f_unlink() fails to remove a sub-directory on _FS_RPATH.\r
+  Fixed name matching error on the 13 character boundary.\r
+  Added a configuration option, _LFN_UNICODE.\r
+  Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.\r
+\r
+\r
+\r
+R0.08 (May 15, 2010)\r
+\r
+  Added a memory configuration option. (_USE_LFN = 3)\r
+  Added file lock feature. (_FS_SHARE)\r
+  Added fast seek feature. (_USE_FASTSEEK)\r
+  Changed some types on the API, XCHAR->TCHAR.\r
+  Changed .fname in the FILINFO structure on Unicode cfg.\r
+  String functions support UTF-8 encoding files on Unicode cfg.\r
+\r
+\r
+\r
+R0.08a (August 16, 2010)\r
+\r
+  Added f_getcwd(). (_FS_RPATH = 2)\r
+  Added sector erase feature. (_USE_ERASE)\r
+  Moved file lock semaphore table from fs object to the bss.\r
+  Fixed f_mkfs() creates wrong FAT32 volume.\r
+\r
+\r
+\r
+R0.08b (January 15, 2011)\r
+\r
+  Fast seek feature is also applied to f_read() and f_write().\r
+  f_lseek() reports required table size on creating CLMP.\r
+  Extended format syntax of f_printf().\r
+  Ignores duplicated directory separators in given path name.\r
+\r
+\r
+\r
+R0.09 (September 06, 2011)\r
+\r
+  f_mkfs() supports multiple partition to complete the multiple partition feature.\r
+  Added f_fdisk().\r
+\r
+\r
+\r
+R0.09a (August 27, 2012)\r
+\r
+  Changed f_open() and f_opendir() reject null object pointer to avoid crash.\r
+  Changed option name _FS_SHARE to _FS_LOCK.\r
+  Fixed assertion failure due to OS/2 EA on FAT12/16 volume.\r
+\r
+\r
+\r
+R0.09b (January 24, 2013)\r
+\r
+  Added f_setlabel() and f_getlabel().\r
+\r
+\r
+\r
+R0.10 (October 02, 2013)\r
+\r
+  Added selection of character encoding on the file. (_STRF_ENCODE)\r
+  Added f_closedir().\r
+  Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO)\r
+  Added forced mount feature with changes of f_mount().\r
+  Improved behavior of volume auto detection.\r
+  Improved write throughput of f_puts() and f_printf().\r
+  Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write().\r
+  Fixed f_write() can be truncated when the file size is close to 4GB.\r
+  Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect value on error.\r
+\r
+\r
+\r
+R0.10a (January 15, 2014)\r
+\r
+  Added arbitrary strings as drive number in the path name. (_STR_VOLUME_ID)\r
+  Added a configuration option of minimum sector size. (_MIN_SS)\r
+  2nd argument of f_rename() can have a drive number and it will be ignored.\r
+  Fixed f_mount() with forced mount fails when drive number is >= 1. (appeared at R0.10)\r
+  Fixed f_close() invalidates the file object without volume lock.\r
+  Fixed f_closedir() returns but the volume lock is left acquired. (appeared at R0.10)\r
+  Fixed creation of an entry with LFN fails on too many SFN collisions. (appeared at R0.07)\r
+\r
+\r
+\r
+R0.10b (May 19, 2014)\r
+\r
+  Fixed a hard error in the disk I/O layer can collapse the directory entry.\r
+  Fixed LFN entry is not deleted on delete/rename an object with lossy converted SFN. (appeared at R0.07)\r
+\r
+\r
+\r
+R0.10c (November 09, 2014)\r
+\r
+  Added a configuration option for the platforms without RTC. (_FS_NORTC)\r
+  Changed option name _USE_ERASE to _USE_TRIM.\r
+  Fixed volume label created by Mac OS X cannot be retrieved with f_getlabel(). (appeared at R0.09b)\r
+  Fixed a potential problem of FAT access that can appear on disk error.\r
+  Fixed null pointer dereference on attempting to delete the root direcotry. (appeared at R0.08)\r
+\r
+\r
+\r
+R0.11 (February 09, 2015)\r
+\r
+  Added f_findfirst(), f_findnext() and f_findclose(). (_USE_FIND)\r
+  Fixed f_unlink() does not remove cluster chain of the file. (appeared at R0.10c)\r
+  Fixed _FS_NORTC option does not work properly. (appeared at R0.10c)\r
+\r
+\r
+\r
+R0.11a (September 05, 2015)\r
+\r
+  Fixed wrong media change can lead a deadlock at thread-safe configuration.\r
+  Added code page 771, 860, 861, 863, 864, 865 and 869. (_CODE_PAGE)\r
+  Removed some code pages actually not exist on the standard systems. (_CODE_PAGE)\r
+  Fixed errors in the case conversion teble of code page 437 and 850 (ff.c).\r
+  Fixed errors in the case conversion teble of Unicode (cc*.c).\r
+\r
+\r
+\r
+R0.12 (April 12, 2016)\r
+\r
+  Added support of exFAT file system. (_FS_EXFAT)\r
+  Added f_expand(). (_USE_EXPAND)\r
+  Changed some members in FINFO structure and behavior of f_readdir().\r
+  Added an option _USE_CHMOD and removed an option _WORD_ACCESS.\r
+  Fixed errors in the case conversion teble of Unicode (cc*.c).\r
+\r
diff --git a/arm_chainloader/drivers/fatfs/00readme.txt b/arm_chainloader/drivers/fatfs/00readme.txt
new file mode 100755 (executable)
index 0000000..35536f7
--- /dev/null
@@ -0,0 +1,21 @@
+FatFs Module Source Files R0.12\r
+\r
+\r
+FILES\r
+\r
+  00readme.txt This file.\r
+  history.txt  Revision history.\r
+  ffconf.h     Configuration file for FatFs module.\r
+  ff.h         Common include file for FatFs and application module.\r
+  ff.c         FatFs module.\r
+  diskio.h     Common include file for FatFs and disk I/O module.\r
+  diskio.c     An example of glue function to attach existing disk I/O module to FatFs.\r
+  integer.h    Integer type definitions for FatFs.\r
+  option       Optional external functions.\r
+\r
+\r
+  Low level disk I/O module is not included in this archive because the FatFs\r
+  module is only a generic file system layer and not depend on any specific\r
+  storage device. You have to provide a low level disk I/O module that written\r
+  to control the target storage device.\r
+\r
diff --git a/arm_chainloader/drivers/fatfs/diskio.c b/arm_chainloader/drivers/fatfs/diskio.c
new file mode 100755 (executable)
index 0000000..fe3edde
--- /dev/null
@@ -0,0 +1,228 @@
+/*-----------------------------------------------------------------------*/\r
+/* Low level disk I/O module skeleton for FatFs     (C)ChaN, 2016        */\r
+/*-----------------------------------------------------------------------*/\r
+/* If a working storage control module is available, it should be        */\r
+/* attached to the FatFs via a glue function rather than modifying it.   */\r
+/* This is an example of glue functions to attach various exsisting      */\r
+/* storage control modules to the FatFs module with a defined API.       */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+#include "diskio.h"            /* FatFs lower layer API */\r
+#include "usbdisk.h"   /* Example: Header file of existing USB MSD control module */\r
+#include "atadrive.h"  /* Example: Header file of existing ATA harddisk control module */\r
+#include "sdcard.h"            /* Example: Header file of existing MMC/SDC contorl module */\r
+\r
+/* Definitions of physical drive number for each drive */\r
+#define ATA            0       /* Example: Map ATA harddisk to physical drive 0 */\r
+#define MMC            1       /* Example: Map MMC/SD card to physical drive 1 */\r
+#define USB            2       /* Example: Map USB MSD to physical drive 2 */\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Get Drive Status                                                      */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+DSTATUS disk_status (\r
+       BYTE pdrv               /* Physical drive nmuber to identify the drive */\r
+)\r
+{\r
+       DSTATUS stat;\r
+       int result;\r
+\r
+       switch (pdrv) {\r
+       case ATA :\r
+               result = ATA_disk_status();\r
+\r
+               // translate the reslut code here\r
+\r
+               return stat;\r
+\r
+       case MMC :\r
+               result = MMC_disk_status();\r
+\r
+               // translate the reslut code here\r
+\r
+               return stat;\r
+\r
+       case USB :\r
+               result = USB_disk_status();\r
+\r
+               // translate the reslut code here\r
+\r
+               return stat;\r
+       }\r
+       return STA_NOINIT;\r
+}\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Inidialize a Drive                                                    */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+DSTATUS disk_initialize (\r
+       BYTE pdrv                               /* Physical drive nmuber to identify the drive */\r
+)\r
+{\r
+       DSTATUS stat;\r
+       int result;\r
+\r
+       switch (pdrv) {\r
+       case ATA :\r
+               result = ATA_disk_initialize();\r
+\r
+               // translate the reslut code here\r
+\r
+               return stat;\r
+\r
+       case MMC :\r
+               result = MMC_disk_initialize();\r
+\r
+               // translate the reslut code here\r
+\r
+               return stat;\r
+\r
+       case USB :\r
+               result = USB_disk_initialize();\r
+\r
+               // translate the reslut code here\r
+\r
+               return stat;\r
+       }\r
+       return STA_NOINIT;\r
+}\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Read Sector(s)                                                        */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+DRESULT disk_read (\r
+       BYTE pdrv,              /* Physical drive nmuber to identify the drive */\r
+       BYTE *buff,             /* Data buffer to store read data */\r
+       DWORD sector,   /* Sector address in LBA */\r
+       UINT count              /* Number of sectors to read */\r
+)\r
+{\r
+       DRESULT res;\r
+       int result;\r
+\r
+       switch (pdrv) {\r
+       case ATA :\r
+               // translate the arguments here\r
+\r
+               result = ATA_disk_read(buff, sector, count);\r
+\r
+               // translate the reslut code here\r
+\r
+               return res;\r
+\r
+       case MMC :\r
+               // translate the arguments here\r
+\r
+               result = MMC_disk_read(buff, sector, count);\r
+\r
+               // translate the reslut code here\r
+\r
+               return res;\r
+\r
+       case USB :\r
+               // translate the arguments here\r
+\r
+               result = USB_disk_read(buff, sector, count);\r
+\r
+               // translate the reslut code here\r
+\r
+               return res;\r
+       }\r
+\r
+       return RES_PARERR;\r
+}\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Write Sector(s)                                                       */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+DRESULT disk_write (\r
+       BYTE pdrv,                      /* Physical drive nmuber to identify the drive */\r
+       const BYTE *buff,       /* Data to be written */\r
+       DWORD sector,           /* Sector address in LBA */\r
+       UINT count                      /* Number of sectors to write */\r
+)\r
+{\r
+       DRESULT res;\r
+       int result;\r
+\r
+       switch (pdrv) {\r
+       case ATA :\r
+               // translate the arguments here\r
+\r
+               result = ATA_disk_write(buff, sector, count);\r
+\r
+               // translate the reslut code here\r
+\r
+               return res;\r
+\r
+       case MMC :\r
+               // translate the arguments here\r
+\r
+               result = MMC_disk_write(buff, sector, count);\r
+\r
+               // translate the reslut code here\r
+\r
+               return res;\r
+\r
+       case USB :\r
+               // translate the arguments here\r
+\r
+               result = USB_disk_write(buff, sector, count);\r
+\r
+               // translate the reslut code here\r
+\r
+               return res;\r
+       }\r
+\r
+       return RES_PARERR;\r
+}\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Miscellaneous Functions                                               */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+DRESULT disk_ioctl (\r
+       BYTE pdrv,              /* Physical drive nmuber (0..) */\r
+       BYTE cmd,               /* Control code */\r
+       void *buff              /* Buffer to send/receive control data */\r
+)\r
+{\r
+       DRESULT res;\r
+       int result;\r
+\r
+       switch (pdrv) {\r
+       case ATA :\r
+\r
+               // Process of the command for the ATA drive\r
+\r
+               return res;\r
+\r
+       case MMC :\r
+\r
+               // Process of the command for the MMC/SD card\r
+\r
+               return res;\r
+\r
+       case USB :\r
+\r
+               // Process of the command the USB drive\r
+\r
+               return res;\r
+       }\r
+\r
+       return RES_PARERR;\r
+}\r
+\r
diff --git a/arm_chainloader/drivers/fatfs/diskio.h b/arm_chainloader/drivers/fatfs/diskio.h
new file mode 100755 (executable)
index 0000000..03e8b7c
--- /dev/null
@@ -0,0 +1,80 @@
+/*-----------------------------------------------------------------------/\r
+/  Low level disk interface modlue include file   (C)ChaN, 2014          /\r
+/-----------------------------------------------------------------------*/\r
+\r
+#ifndef _DISKIO_DEFINED\r
+#define _DISKIO_DEFINED\r
+\r
+#ifdef __cplusplus\r
+extern "C" {\r
+#endif\r
+\r
+#include "integer.h"\r
+\r
+\r
+/* Status of Disk Functions */\r
+typedef BYTE   DSTATUS;\r
+\r
+/* Results of Disk Functions */\r
+typedef enum {\r
+       RES_OK = 0,             /* 0: Successful */\r
+       RES_ERROR,              /* 1: R/W Error */\r
+       RES_WRPRT,              /* 2: Write Protected */\r
+       RES_NOTRDY,             /* 3: Not Ready */\r
+       RES_PARERR              /* 4: Invalid Parameter */\r
+} DRESULT;\r
+\r
+\r
+/*---------------------------------------*/\r
+/* Prototypes for disk control functions */\r
+\r
+\r
+DSTATUS disk_initialize (BYTE pdrv);\r
+DSTATUS disk_status (BYTE pdrv);\r
+DRESULT disk_read (BYTE pdrv, BYTE* buff, DWORD sector, UINT count);\r
+DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, UINT count);\r
+DRESULT disk_ioctl (BYTE pdrv, BYTE cmd, void* buff);\r
+\r
+\r
+/* Disk Status Bits (DSTATUS) */\r
+\r
+#define STA_NOINIT             0x01    /* Drive not initialized */\r
+#define STA_NODISK             0x02    /* No medium in the drive */\r
+#define STA_PROTECT            0x04    /* Write protected */\r
+\r
+\r
+/* Command code for disk_ioctrl fucntion */\r
+\r
+/* Generic command (Used by FatFs) */\r
+#define CTRL_SYNC                      0       /* Complete pending write process (needed at _FS_READONLY == 0) */\r
+#define GET_SECTOR_COUNT       1       /* Get media size (needed at _USE_MKFS == 1) */\r
+#define GET_SECTOR_SIZE                2       /* Get sector size (needed at _MAX_SS != _MIN_SS) */\r
+#define GET_BLOCK_SIZE         3       /* Get erase block size (needed at _USE_MKFS == 1) */\r
+#define CTRL_TRIM                      4       /* Inform device that the data on the block of sectors is no longer used (needed at _USE_TRIM == 1) */\r
+\r
+/* Generic command (Not used by FatFs) */\r
+#define CTRL_POWER                     5       /* Get/Set power status */\r
+#define CTRL_LOCK                      6       /* Lock/Unlock media removal */\r
+#define CTRL_EJECT                     7       /* Eject media */\r
+#define CTRL_FORMAT                    8       /* Create physical format on the media */\r
+\r
+/* MMC/SDC specific ioctl command */\r
+#define MMC_GET_TYPE           10      /* Get card type */\r
+#define MMC_GET_CSD                    11      /* Get CSD */\r
+#define MMC_GET_CID                    12      /* Get CID */\r
+#define MMC_GET_OCR                    13      /* Get OCR */\r
+#define MMC_GET_SDSTAT         14      /* Get SD status */\r
+#define ISDIO_READ                     55      /* Read data form SD iSDIO register */\r
+#define ISDIO_WRITE                    56      /* Write data to SD iSDIO register */\r
+#define ISDIO_MRITE                    57      /* Masked write data to SD iSDIO register */\r
+\r
+/* ATA/CF specific ioctl command */\r
+#define ATA_GET_REV                    20      /* Get F/W revision */\r
+#define ATA_GET_MODEL          21      /* Get model name */\r
+#define ATA_GET_SN                     22      /* Get serial number */\r
+\r
+#ifdef __cplusplus\r
+}\r
+#endif\r
+\r
+#endif\r
diff --git a/arm_chainloader/drivers/fatfs/ff.c b/arm_chainloader/drivers/fatfs/ff.c
new file mode 100755 (executable)
index 0000000..798862a
--- /dev/null
@@ -0,0 +1,5776 @@
+/*----------------------------------------------------------------------------/\r
+/  FatFs - FAT file system module  R0.12                 (C)ChaN, 2016        /\r
+/-----------------------------------------------------------------------------/\r
+/ FatFs module is a free software that opened under license policy of\r
+/ following conditions.\r
+/\r
+/ Copyright (C) 2016, ChaN, all right reserved.\r
+/\r
+/ 1. Redistributions of source code must retain the above copyright notice,\r
+/    this condition and the following disclaimer.\r
+/\r
+/ This software is provided by the copyright holder and contributors "AS IS"\r
+/ and any warranties related to this software are DISCLAIMED.\r
+/ The copyright owner or contributors be NOT LIABLE for any damages caused\r
+/ by use of this software.\r
+/----------------------------------------------------------------------------*/\r
+\r
+\r
+#include "ff.h"                        /* Declarations of FatFs API */\r
+#include "diskio.h"            /* Declarations of disk I/O functions */\r
+\r
+\r
+/*--------------------------------------------------------------------------\r
+\r
+   Module Private Definitions\r
+\r
+---------------------------------------------------------------------------*/\r
+\r
+#if _FATFS != 88100    /* Revision ID */\r
+#error Wrong include file (ff.h).\r
+#endif\r
+\r
+\r
+/* Reentrancy related */\r
+#if _FS_REENTRANT\r
+#if _USE_LFN == 1\r
+#error Static LFN work area cannot be used at thread-safe 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
+#else\r
+#define        ENTER_FF(fs)\r
+#define LEAVE_FF(fs, res)      return res\r
+#endif\r
+\r
+#define        ABORT(fs, res)          { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }\r
+\r
+\r
+/* Definitions of sector size */\r
+#if (_MAX_SS < _MIN_SS) || (_MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096) || (_MIN_SS != 512 && _MIN_SS != 1024 && _MIN_SS != 2048 && _MIN_SS != 4096)\r
+#error Wrong sector size configuration\r
+#endif\r
+#if _MAX_SS == _MIN_SS\r
+#define        SS(fs)  ((UINT)_MAX_SS) /* Fixed sector size */\r
+#else\r
+#define        SS(fs)  ((fs)->ssize)   /* Variable sector size */\r
+#endif\r
+\r
+\r
+/* Timestamp */\r
+#if _FS_NORTC == 1\r
+#if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31\r
+#error Invalid _FS_NORTC settings\r
+#endif\r
+#define GET_FATTIME()  ((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)\r
+#else\r
+#define GET_FATTIME()  get_fattime()\r
+#endif\r
+\r
+\r
+/* File lock controls */\r
+#if _FS_LOCK != 0\r
+#if _FS_READONLY\r
+#error _FS_LOCK must be 0 at read-only configuration\r
+#endif\r
+typedef struct {\r
+       FATFS *fs;              /* Object ID 1, volume (NULL:blank entry) */\r
+       DWORD clu;              /* Object ID 2, directory (0:root) */\r
+       DWORD ofs;              /* Object ID 3, directory offset */\r
+       WORD ctr;               /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */\r
+} FILESEM;\r
+#endif\r
+\r
+\r
+\r
+/* DBCS code ranges and SBCS upper conversion tables */\r
+\r
+#if _CODE_PAGE == 932  /* Japanese Shift-JIS */\r
+#define _DF1S  0x81    /* DBC 1st byte range 1 start */\r
+#define _DF1E  0x9F    /* DBC 1st byte range 1 end */\r
+#define _DF2S  0xE0    /* DBC 1st byte range 2 start */\r
+#define _DF2E  0xFC    /* DBC 1st byte range 2 end */\r
+#define _DS1S  0x40    /* DBC 2nd byte range 1 start */\r
+#define _DS1E  0x7E    /* DBC 2nd byte range 1 end */\r
+#define _DS2S  0x80    /* DBC 2nd byte range 2 start */\r
+#define _DS2E  0xFC    /* DBC 2nd byte range 2 end */\r
+\r
+#elif _CODE_PAGE == 936        /* Simplified Chinese GBK */\r
+#define _DF1S  0x81\r
+#define _DF1E  0xFE\r
+#define _DS1S  0x40\r
+#define _DS1E  0x7E\r
+#define _DS2S  0x80\r
+#define _DS2E  0xFE\r
+\r
+#elif _CODE_PAGE == 949        /* Korean */\r
+#define _DF1S  0x81\r
+#define _DF1E  0xFE\r
+#define _DS1S  0x41\r
+#define _DS1E  0x5A\r
+#define _DS2S  0x61\r
+#define _DS2E  0x7A\r
+#define _DS3S  0x81\r
+#define _DS3E  0xFE\r
+\r
+#elif _CODE_PAGE == 950        /* Traditional Chinese Big5 */\r
+#define _DF1S  0x81\r
+#define _DF1E  0xFE\r
+#define _DS1S  0x40\r
+#define _DS1E  0x7E\r
+#define _DS2S  0xA1\r
+#define _DS2E  0xFE\r
+\r
+#elif _CODE_PAGE == 437        /* U.S. */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r
+                               0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 720        /* Arabic */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
+                               0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 737        /* Greek */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
+                               0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \\r
+                               0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 771        /* KBL */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
+                               0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \\r
+                               0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 775        /* Baltic */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \\r
+                               0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \\r
+                               0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 850        /* Latin 1 */\r
+#define _DF1S  0\r
+#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \\r
+                               0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \\r
+                               0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \\r
+                               0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 852        /* Latin 2 */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \\r
+                               0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \\r
+                               0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 855        /* Cyrillic */\r
+#define _DF1S  0\r
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \\r
+                               0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \\r
+                               0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \\r
+                               0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \\r
+                               0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 857        /* Turkish */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \\r
+                               0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \\r
+                               0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 860        /* Portuguese */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \\r
+                               0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 861        /* Icelandic */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \\r
+                               0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \\r
+                               0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 862        /* Hebrew */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
+                               0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 863        /* Canadian-French */\r
+#define _DF1S  0\r
+#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \\r
+                               0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \\r
+                               0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 864        /* Arabic */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r
+                               0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 865        /* Nordic */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \\r
+                               0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \\r
+                               0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 866        /* Russian */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
+                               0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \\r
+                               0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \\r
+                               0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 869        /* Greek 2 */\r
+#define _DF1S  0\r
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \\r
+                               0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \\r
+                               0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \\r
+                               0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \\r
+                               0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \\r
+                               0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \\r
+                               0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \\r
+                               0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}\r
+\r
+#elif _CODE_PAGE == 1  /* ASCII (for only non-LFN cfg) */\r
+#if _USE_LFN != 0\r
+#error Cannot enable LFN without valid code page.\r
+#endif\r
+#define _DF1S  0\r
+\r
+#else\r
+#error Unknown code page\r
+\r
+#endif\r
+\r
+\r
+/* Character code support macros */\r
+#define IsUpper(c)     (((c)>='A')&&((c)<='Z'))\r
+#define IsLower(c)     (((c)>='a')&&((c)<='z'))\r
+#define IsDigit(c)     (((c)>='0')&&((c)<='9'))\r
+\r
+#if _DF1S != 0 /* Code page is DBCS */\r
+\r
+#ifdef _DF2S   /* Two 1st byte areas */\r
+#define IsDBCS1(c)     (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))\r
+#else                  /* One 1st byte area */\r
+#define IsDBCS1(c)     ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)\r
+#endif\r
+\r
+#ifdef _DS3S   /* Three 2nd byte areas */\r
+#define IsDBCS2(c)     (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))\r
+#else                  /* Two 2nd byte areas */\r
+#define IsDBCS2(c)     (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))\r
+#endif\r
+\r
+#else                  /* Code page is SBCS */\r
+\r
+#define IsDBCS1(c)     0\r
+#define IsDBCS2(c)     0\r
+\r
+#endif /* _DF1S */\r
+\r
+\r
+/* Name status flags */\r
+#define NSFLAG         11              /* Index of name status byte in fn[] */\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
+#define NS_NONAME      0x80    /* Not followed */\r
+\r
+\r
+/* Limits and Boundaries (Differ from specs but correct for real DOS/Windows) */\r
+#define MIN_FAT16      4086U                   /* Minimum number of clusters of FAT16 */\r
+#define        MIN_FAT32       65526U                  /* Minimum number of clusters of FAT32 */\r
+#define MAX_DIR                0x200000                /* Maximum size of FAT directory */\r
+#define MAX_DIR_EX     0x10000000              /* Maximum size of exFAT directory */\r
+\r
+\r
+/* FatFs refers the members in the FAT structures as byte array instead of\r
+/ structure members because the structure is not binary compatible between\r
+/ different platforms */\r
+\r
+#define BS_jmpBoot                     0               /* x86 jump instruction (3-byte) */\r
+#define BS_OEMName                     3               /* OEM name (8-byte) */\r
+#define BPB_BytsPerSec         11              /* Sector size [byte] (WORD) */\r
+#define BPB_SecPerClus         13              /* Cluster size [sector] (BYTE) */\r
+#define BPB_RsvdSecCnt         14              /* Size of reserved area [sector] (WORD) */\r
+#define BPB_NumFATs                    16              /* Number of FATs (BYTE) */\r
+#define BPB_RootEntCnt         17              /* Size of root directory area for FAT12/16 [entry] (WORD) */\r
+#define BPB_TotSec16           19              /* Volume size (16-bit) [sector] (WORD) */\r
+#define BPB_Media                      21              /* Media descriptor (BYTE) */\r
+#define BPB_FATSz16                    22              /* FAT size (16-bit) [sector] (WORD) */\r
+#define BPB_SecPerTrk          24              /* Track size for int13h [sector] (WORD) */\r
+#define BPB_NumHeads           26              /* Number of heads for int13h (WORD) */\r
+#define BPB_HiddSec                    28              /* Volume offset from top of the drive (DWORD) */\r
+#define BPB_TotSec32           32              /* Volume size (32-bit) [sector] (DWORD) */\r
+#define BS_DrvNum                      36              /* Physical drive number for int13h (BYTE) */\r
+#define BS_NTres                       37              /* Error flag (BYTE) */\r
+#define BS_BootSig                     38              /* Extended boot signature (BYTE) */\r
+#define BS_VolID                       39              /* Volume serial number (DWORD) */\r
+#define BS_VolLab                      43              /* Volume label string (8-byte) */\r
+#define BS_FilSysType          54              /* File system type string (8-byte) */\r
+#define BPB_FATSz32                    36              /* FAT size (32-bit) [sector] (DWORD) */\r
+#define BPB_ExtFlags           40              /* Extended flags (WORD) */\r
+\r
+#define BPB_FSVer32                    42              /* FAT32: File system version (WORD) */\r
+#define BPB_RootClus32         44              /* FAT32: Root directory cluster (DWORD) */\r
+#define BPB_FSInfo32           48              /* FAT32: Offset of FSINFO sector (WORD) */\r
+#define BPB_BkBootSec32                50              /* FAT32: Offset of backup boot sector (WORD) */\r
+#define BS_DrvNum32                    64              /* FAT32: Physical drive number for int13h (BYTE) */\r
+#define BS_NTres32                     65              /* FAT32: Error flag (BYTE) */\r
+#define BS_BootSig32           66              /* FAT32: Extended boot signature (BYTE) */\r
+#define BS_VolID32                     67              /* FAT32: Volume serial number (DWORD) */\r
+#define BS_VolLab32                    71              /* FAT32: Volume label string (8-byte) */\r
+#define BS_FilSysType32                82              /* FAT32: File system type string (8-byte) */\r
+\r
+#define BPB_ZeroedEx           11              /* exFAT: Must be zero (35-byte) */\r
+#define BPB_VolOfsEx           64              /* exFAT: Volume offset from top of the drive [sector] (QWORD) */\r
+#define BPB_TotSecEx           72              /* exFAT: Volume size [sector] (QWORD) */\r
+#define BPB_FatOfsEx           80              /* exFAT: FAT offset from top of the volume [sector] (DWORD) */\r
+#define BPB_FatSzEx                    84              /* exFAT: FAT size [sector] (DWORD) */\r
+#define BPB_DataOfsEx          88              /* exFAT: Data offset from top of the volume [sector] (DWORD) */\r
+#define BPB_NumClusEx          92              /* exFAT: Number of clusters (DWORD) */\r
+#define BPB_RootClusEx         96              /* exFAT: Root directory cluster (DWORD) */\r
+#define BPB_VolIDEx                    100             /* exFAT: Volume serial number (DWORD) */\r
+#define BPB_FSVerEx                    104             /* exFAT: File system version (WORD) */\r
+#define BPB_VolFlagEx          106             /* exFAT: Volume flags (BYTE) */\r
+#define BPB_ActFatEx           107             /* exFAT: Active FAT flags (BYTE) */\r
+#define BPB_BytsPerSecEx       108             /* exFAT: Log2 of sector size in byte (BYTE) */\r
+#define BPB_SecPerClusEx       109             /* exFAT: Log2 of cluster size in sector (BYTE) */\r
+#define BPB_NumFATsEx          110             /* exFAT: Number of FATs (BYTE) */\r
+#define BPB_DrvNumEx           111             /* exFAT: Physical drive number for int13h (BYTE) */\r
+#define BPB_PercInUseEx                112             /* exFAT: Percent in use (BYTE) */\r
+\r
+#define        FSI_LeadSig                     0               /* FAT32 FSI: Leading signature (DWORD) */\r
+#define        FSI_StrucSig            484             /* FAT32 FSI: Structure signature (DWORD) */\r
+#define        FSI_Free_Count          488             /* FAT32 FSI: Number of free clusters (DWORD) */\r
+#define        FSI_Nxt_Free            492             /* FAT32 FSI: Last allocated cluster (DWORD) */\r
+\r
+#define MBR_Table                      446             /* MBR: Partition table offset */\r
+#define        SZ_PTE                          16              /* MBR: Size of a partition table entry */\r
+\r
+#define BS_55AA                                510             /* Signature word (WORD) */\r
+\r
+#define        DIR_Name                        0               /* Short file name (11) */\r
+#define        DIR_Attr                        11              /* Attribute (1) */\r
+#define        DIR_NTres                       12              /* Lower case flag (1) */\r
+#define DIR_CrtTime10          13              /* Created time sub-second (1) */\r
+#define        DIR_CrtTime                     14              /* Created time (2) */\r
+#define        DIR_CrtDate                     16              /* Created date (2) */\r
+#define DIR_LstAccDate         18              /* Last accessed date (2) */\r
+#define        DIR_FstClusHI           20              /* Higher 16-bit of first cluster (WORD) */\r
+#define        DIR_WrtTime                     22              /* Modified time (2) */\r
+#define        DIR_WrtDate                     24              /* Modified date (2) */\r
+#define        DIR_FstClusLO           26              /* Lower 16-bit of first cluster (WORD) */\r
+#define        DIR_FileSize            28              /* File size (DWORD) */\r
+#define        LDIR_Ord                        0               /* LFN entry order and LLE flag (1) */\r
+#define        LDIR_Attr                       11              /* LFN attribute (1) */\r
+#define        LDIR_Type                       12              /* LFN type (1) */\r
+#define        LDIR_Chksum                     13              /* Checksum of the SFN entry */\r
+#define        LDIR_FstClusLO          26              /* Must be zero (WORD) */\r
+#define        XDIR_Type                       0               /* Type of exFAT directory entry (BYTE) */\r
+#define        XDIR_NumLabel           1               /* Number of volume label characters (BYTE) */\r
+#define        XDIR_Label                      2               /* Volume label (11-WORD) */\r
+#define        XDIR_CaseSum            4               /* Sum of case conversion table (DWORD) */\r
+#define        XDIR_NumSec                     1               /* Number of secondary entries (BYTE) */\r
+#define        XDIR_SetSum                     2               /* Sum of the set of directory entries (WORD) */\r
+#define        XDIR_Attr                       4               /* File attribute (WORD) */\r
+#define        XDIR_CrtTime            8               /* Created time (4) */\r
+#define        XDIR_ModTime            12              /* Modified time (4) */\r
+#define        XDIR_AccTime            16              /* Last accessed time (4) */\r
+#define        XDIR_CrtTime10          20              /* Created time subsecond (1) */\r
+#define        XDIR_ModTime10          21              /* Modified time subsecond (1) */\r
+#define        XDIR_CrtTZ                      22              /* Created timezone (1) */\r
+#define        XDIR_ModTZ                      23              /* Modified timezone (1) */\r
+#define        XDIR_AccTZ                      24              /* Last accessed timezone (1) */\r
+#define        XDIR_GenFlags           33              /* Gneral flags (1) */\r
+#define        XDIR_NumName            35              /* Number of file name characters (BYTE) */\r
+#define        XDIR_NameHash           36              /* Hash of file name (WORD) */\r
+#define XDIR_ValidFileSize     40              /* Valid file size (QWORD) */\r
+#define        XDIR_FstClus            52              /* First cluster of the File/Directory (DWORD) */\r
+#define        XDIR_FileSize           56              /* File/Directory size (QWORD) */\r
+\r
+#define        SZDIRE                          32              /* Size of a directory entry */\r
+#define        LLEF                            0x40    /* Last long entry flag in LDIR_Ord */\r
+#define        DDEM                            0xE5    /* Deleted directory entry mark at DIR_Name[0] */\r
+#define        RDDEM                           0x05    /* Replacement of the character collides with DDEM */\r
+\r
+\r
+\r
+\r
+\r
+/*--------------------------------------------------------------------------\r
+\r
+   Module Private Work Area\r
+\r
+---------------------------------------------------------------------------*/\r
+\r
+/* Remark: Variables here without initial value shall be guaranteed zero/null\r
+/  at start-up. If not, either the linker or start-up routine being used is\r
+/  not compliance with C standard. */\r
+\r
+#if _VOLUMES < 1 || _VOLUMES > 9\r
+#error Wrong _VOLUMES setting\r
+#endif\r
+static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */\r
+static WORD Fsid;                              /* File system mount ID */\r
+\r
+#if _FS_RPATH != 0 && _VOLUMES >= 2\r
+static BYTE CurrVol;                   /* Current drive */\r
+#endif\r
+\r
+#if _FS_LOCK != 0\r
+static FILESEM Files[_FS_LOCK];        /* Open object lock semaphores */\r
+#endif\r
+\r
+#if _USE_LFN == 0                      /* Non-LFN configuration */\r
+#define        DEF_NAMBUF                      BYTE sfn[12]\r
+#define INIT_NAMBUF(dobj)      (dobj).fn = sfn\r
+#define        FREE_NAMBUF()\r
+#define        DEF_DIRBUF\r
+#define INIT_DIRBUF(fs)\r
+#define        FREE_DIRBUF()\r
+#else\r
+#if _MAX_LFN < 12 || _MAX_LFN > 255\r
+#error Wrong _MAX_LFN setting\r
+#endif\r
+\r
+#if _USE_LFN == 1              /* LFN enabled with static working buffer */\r
+#if _FS_EXFAT\r
+static BYTE    DirBuf[SZDIRE*19];      /* Directory entry block scratchpad buffer (19 entries in size) */\r
+#endif\r
+static WCHAR LfnBuf[_MAX_LFN+1];       /* LFN enabled with static working buffer */\r
+#define        DEF_NAMBUF              BYTE sfn[12]\r
+#define INIT_NAMBUF(dj)        { (dj).fn = sfn; (dj).lfn = LfnBuf; }\r
+#define        FREE_NAMBUF()\r
+#define        DEF_DIRBUF\r
+#define INIT_DIRBUF(fs)\r
+#define        FREE_DIRBUF()\r
+\r
+#elif _USE_LFN == 2    /* LFN enabled with dynamic working buffer on the stack */\r
+#if _FS_EXFAT\r
+#define        DEF_NAMBUF              BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]; BYTE dbuf[SZDIRE*19]\r
+#define INIT_NAMBUF(dj)        { (dj).fn = sfn; (dj).lfn = lbuf; (dj).obj.fs->dirbuf = dbuf; }\r
+#define        FREE_NAMBUF()\r
+#define        DEF_DIRBUF              BYTE dbuf[SZDIRE*19]\r
+#define INIT_DIRBUF(fs)        fs->dirbuf = dbuf\r
+#define        FREE_DIRBUF()\r
+#else\r
+#define        DEF_NAMBUF              BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]\r
+#define INIT_NAMBUF(dj)        { (dj).fn = sfn; (dj).lfn = lbuf; }\r
+#define        FREE_NAMBUF()\r
+#define        DEF_DIRBUF\r
+#define INIT_DIRBUF(fs)\r
+#define        FREE_DIRBUF()\r
+#endif\r
+\r
+#elif _USE_LFN == 3    /* LFN enabled with dynamic working buffer on the heap */\r
+#if _FS_EXFAT\r
+#define        DEF_NAMBUF              BYTE sfn[12]; WCHAR *lfn\r
+#define INIT_NAMBUF(dj)        { lfn = ff_memalloc((_MAX_LFN+1)*2 + SZDIRE*19); if (!lfn) LEAVE_FF((dj).obj.fs, FR_NOT_ENOUGH_CORE); (dj).fn = sfn; (dj).lfn = lfn; (dj).obj.fs->dirbuf = (BYTE*)(lfn+_MAX_LFN+1); }\r
+#define        FREE_NAMBUF()   ff_memfree(lfn)\r
+#define        DEF_DIRBUF              BYTE *dirb\r
+#define INIT_DIRBUF(fs)        { dirb = ff_memalloc(SZDIRE*19); if (!dirb) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); fs->dirbuf = dirb; }\r
+#define        FREE_DIRBUF()   ff_memfree(dirb)\r
+#else\r
+#define        DEF_NAMBUF              BYTE sfn[12]; WCHAR *lfn\r
+#define INIT_NAMBUF(dj)        { lfn = ff_memalloc((_MAX_LFN+1)*2); if (!lfn) LEAVE_FF((dj).obj.fs, FR_NOT_ENOUGH_CORE); (dj).fn = sfn; (dj).lfn = lfn; }\r
+#define        FREE_NAMBUF()   ff_memfree(lfn)\r
+#define        DEF_DIRBUF\r
+#define INIT_DIRBUF(fs)\r
+#define        FREE_DIRBUF()\r
+#endif\r
+\r
+#else\r
+#error Wrong _USE_LFN setting\r
+#endif\r
+#endif\r
+\r
+#ifdef _EXCVT\r
+static const BYTE ExCvt[] = _EXCVT;    /* Upper conversion table for SBCS extended characters */\r
+#endif\r
+\r
+\r
+\r
+\r
+\r
+\r
+/*--------------------------------------------------------------------------\r
+\r
+   Module Private Functions\r
+\r
+---------------------------------------------------------------------------*/\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Load/Store multi-byte word in the FAT structure                       */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+WORD ld_word (const BYTE* ptr) /*       Load a 2-byte little-endian word */\r
+{\r
+       WORD rv;\r
+\r
+       rv = ptr[1];\r
+       rv = rv << 8 | ptr[0];\r
+       return rv;\r
+}\r
+\r
+static\r
+DWORD ld_dword (const BYTE* ptr)       /* Load a 4-byte little-endian word */\r
+{\r
+       DWORD rv;\r
+\r
+       rv = ptr[3];\r
+       rv = rv << 8 | ptr[2];\r
+       rv = rv << 8 | ptr[1];\r
+       rv = rv << 8 | ptr[0];\r
+       return rv;\r
+}\r
+\r
+#if _FS_EXFAT\r
+static\r
+QWORD ld_qword (const BYTE* ptr)       /* Load an 8-byte little-endian word */\r
+{\r
+       QWORD rv;\r
+\r
+       rv = ptr[7];\r
+       rv = rv << 8 | ptr[6];\r
+       rv = rv << 8 | ptr[5];\r
+       rv = rv << 8 | ptr[4];\r
+       rv = rv << 8 | ptr[3];\r
+       rv = rv << 8 | ptr[2];\r
+       rv = rv << 8 | ptr[1];\r
+       rv = rv << 8 | ptr[0];\r
+       return rv;\r
+}\r
+#endif\r
+\r
+#if !_FS_READONLY\r
+static\r
+void st_word (BYTE* ptr, WORD val)     /* Store a 2-byte word in little-endian */\r
+{\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val;\r
+}\r
+\r
+static\r
+void st_dword (BYTE* ptr, DWORD val)   /* Store a 4-byte word in little-endian */\r
+{\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val;\r
+}\r
+\r
+#if _FS_EXFAT\r
+static\r
+void st_qword (BYTE* ptr, QWORD val)   /* Store an 8-byte word in little-endian */\r
+{\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val; val >>= 8;\r
+       *ptr++ = (BYTE)val;\r
+}\r
+#endif\r
+#endif /* !_FS_READONLY */\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, UINT cnt) {\r
+       BYTE *d = (BYTE*)dst;\r
+       const BYTE *s = (const BYTE*)src;\r
+\r
+       if (cnt) {\r
+               do *d++ = *s++; while (--cnt);\r
+       }\r
+}\r
+\r
+/* Fill memory block */\r
+static\r
+void mem_set (void* dst, int val, UINT cnt) {\r
+       BYTE *d = (BYTE*)dst;\r
+\r
+       do *d++ = (BYTE)val; while (--cnt);\r
+}\r
+\r
+/* Compare memory block */\r
+static\r
+int mem_cmp (const void* dst, const void* src, UINT cnt) {     /* ZR:same, NZ:different */\r
+       const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;\r
+       int r = 0;\r
+\r
+       do {\r
+               r = *d++ - *s++;\r
+       } while (--cnt && r == 0);\r
+\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) {       /* NZ:contained, ZR:not contained */\r
+       while (*str && *str != chr) str++;\r
+       return *str;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Request/Release grant to access the volume                            */\r
+/*-----------------------------------------------------------------------*/\r
+#if _FS_REENTRANT\r
+static\r
+int 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 (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_TIMEOUT) {\r
+               ff_rel_grant(fs->sobj);\r
+       }\r
+}\r
+#endif\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* File lock control functions                                           */\r
+/*-----------------------------------------------------------------------*/\r
+#if _FS_LOCK != 0\r
+\r
+static\r
+FRESULT chk_lock (     /* Check if the file can be accessed */\r
+       DIR* dp,                /* Directory object pointing the file to be checked */\r
+       int acc                 /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */\r
+)\r
+{\r
+       UINT i, be;\r
+\r
+       /* Search file semaphore table */\r
+       for (i = be = 0; i < _FS_LOCK; i++) {\r
+               if (Files[i].fs) {      /* Existing entry */\r
+                       if (Files[i].fs == dp->obj.fs &&                /* Check if the object matched with an open object */\r
+                               Files[i].clu == dp->obj.sclust &&\r
+                               Files[i].ofs == dp->dptr) break;\r
+               } else {                        /* Blank entry */\r
+                       be = 1;\r
+               }\r
+       }\r
+       if (i == _FS_LOCK) {    /* The object is not opened */\r
+               return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES;       /* Is there a blank entry for new object? */\r
+       }\r
+\r
+       /* The object has been opened. Reject any open against writing file and all write mode open */\r
+       return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;\r
+}\r
+\r
+\r
+static\r
+int enq_lock (void)    /* Check if an entry is available for a new object */\r
+{\r
+       UINT i;\r
+\r
+       for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;\r
+       return (i == _FS_LOCK) ? 0 : 1;\r
+}\r
+\r
+\r
+static\r
+UINT inc_lock (        /* Increment object open counter and returns its index (0:Internal error) */\r
+       DIR* dp,        /* Directory object pointing the file to register or increment */\r
+       int acc         /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */\r
+)\r
+{\r
+       UINT i;\r
+\r
+\r
+       for (i = 0; i < _FS_LOCK; i++) {        /* Find the object */\r
+               if (Files[i].fs == dp->obj.fs &&\r
+                       Files[i].clu == dp->obj.sclust &&\r
+                       Files[i].ofs == dp->dptr) break;\r
+       }\r
+\r
+       if (i == _FS_LOCK) {                            /* Not opened. Register it as new. */\r
+               for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;\r
+               if (i == _FS_LOCK) return 0;    /* No free entry to register (int err) */\r
+               Files[i].fs = dp->obj.fs;\r
+               Files[i].clu = dp->obj.sclust;\r
+               Files[i].ofs = dp->dptr;\r
+               Files[i].ctr = 0;\r
+       }\r
+\r
+       if (acc && Files[i].ctr) return 0;      /* Access violation (int err) */\r
+\r
+       Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1;  /* Set semaphore value */\r
+\r
+       return i + 1;\r
+}\r
+\r
+\r
+static\r
+FRESULT dec_lock (     /* Decrement object open counter */\r
+       UINT i                  /* Semaphore index (1..) */\r
+)\r
+{\r
+       WORD n;\r
+       FRESULT res;\r
+\r
+\r
+       if (--i < _FS_LOCK) {   /* Shift index number origin from 0 */\r
+               n = Files[i].ctr;\r
+               if (n == 0x100) n = 0;          /* If write mode open, delete the entry */\r
+               if (n > 0) n--;                         /* Decrement read mode open count */\r
+               Files[i].ctr = n;\r
+               if (n == 0) Files[i].fs = 0;    /* Delete the entry if open count gets zero */\r
+               res = FR_OK;\r
+       } else {\r
+               res = FR_INT_ERR;                       /* Invalid index nunber */\r
+       }\r
+       return res;\r
+}\r
+\r
+\r
+static\r
+void clear_lock (      /* Clear lock entries of the volume */\r
+       FATFS *fs\r
+)\r
+{\r
+       UINT i;\r
+\r
+       for (i = 0; i < _FS_LOCK; i++) {\r
+               if (Files[i].fs == fs) Files[i].fs = 0;\r
+       }\r
+}\r
+#endif\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Move/Flush disk access window in the file system object               */\r
+/*-----------------------------------------------------------------------*/\r
+#if !_FS_READONLY\r
+static\r
+FRESULT sync_window (  /* Returns FR_OK or FR_DISK_ERROR */\r
+       FATFS* fs                       /* File system object */\r
+)\r
+{\r
+       DWORD wsect;\r
+       UINT nf;\r
+       FRESULT res = FR_OK;\r
+\r
+\r
+       if (fs->wflag) {        /* Write back the sector if it is dirty */\r
+               wsect = fs->winsect;    /* Current sector number */\r
+               if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {\r
+                       res = FR_DISK_ERR;\r
+               } else {\r
+                       fs->wflag = 0;\r
+                       if (wsect - fs->fatbase < fs->fsize) {          /* Is it in the FAT area? */\r
+                               for (nf = fs->n_fats; nf >= 2; nf--) {  /* Reflect the change to all FAT copies */\r
+                                       wsect += fs->fsize;\r
+                                       disk_write(fs->drv, fs->win, wsect, 1);\r
+                               }\r
+                       }\r
+               }\r
+       }\r
+       return res;\r
+}\r
+#endif\r
+\r
+\r
+static\r
+FRESULT move_window (  /* Returns FR_OK or FR_DISK_ERROR */\r
+       FATFS* fs,                      /* File system object */\r
+       DWORD sector            /* Sector number to make appearance in the fs->win[] */\r
+)\r
+{\r
+       FRESULT res = FR_OK;\r
+\r
+\r
+       if (sector != fs->winsect) {    /* Window offset changed? */\r
+#if !_FS_READONLY\r
+               res = sync_window(fs);          /* Write-back changes */\r
+#endif\r
+               if (res == FR_OK) {                     /* Fill sector window with new data */\r
+                       if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {\r
+                               sector = 0xFFFFFFFF;    /* Invalidate window if data is not reliable */\r
+                               res = FR_DISK_ERR;\r
+                       }\r
+                       fs->winsect = sector;\r
+               }\r
+       }\r
+       return res;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Synchronize file system and strage device                             */\r
+/*-----------------------------------------------------------------------*/\r
+#if !_FS_READONLY\r
+static\r
+FRESULT sync_fs (      /* FR_OK:succeeded, !=0:error */\r
+       FATFS* fs               /* File system object */\r
+)\r
+{\r
+       FRESULT res;\r
+\r
+\r
+       res = sync_window(fs);\r
+       if (res == FR_OK) {\r
+               /* Update FSInfo sector if needed */\r
+               if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {\r
+                       /* Create FSInfo structure */\r
+                       mem_set(fs->win, 0, SS(fs));\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_clst);\r
+                       st_dword(fs->win + FSI_Nxt_Free, fs->last_clst);\r
+                       /* Write it into the FSInfo sector */\r
+                       fs->winsect = fs->volbase + 1;\r
+                       disk_write(fs->drv, fs->win, fs->winsect, 1);\r
+                       fs->fsi_flag = 0;\r
+               }\r
+               /* Make sure that no pending write process in the physical drive */\r
+               if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK) res = FR_DISK_ERR;\r
+       }\r
+\r
+       return res;\r
+}\r
+#endif\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Get sector# from cluster#                                             */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\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->n_fatent - 2) return 0;         /* Invalid cluster# */\r
+       return clst * fs->csize + fs->database;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* FAT access - Read value of a FAT entry                                */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+DWORD get_fat (        /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */\r
+       _FDID* obj,     /* Corresponding object */\r
+       DWORD clst      /* Cluster number to get the value */\r
+)\r
+{\r
+       UINT wc, bc;\r
+       DWORD val;\r
+       FATFS *fs = obj->fs;\r
+\r
+\r
+       if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */\r
+               val = 1;        /* Internal error */\r
+\r
+       } else {\r
+               val = 0xFFFFFFFF;       /* Default value falls on disk error */\r
+\r
+               switch (fs->fs_type) {\r
+               case FS_FAT12 :\r
+                       bc = (UINT)clst; bc += bc / 2;\r
+                       if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;\r
+                       wc = fs->win[bc++ % SS(fs)];\r
+                       if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;\r
+                       wc |= fs->win[bc % SS(fs)] << 8;\r
+                       val = clst & 1 ? wc >> 4 : (wc & 0xFFF);\r
+                       break;\r
+\r
+               case FS_FAT16 :\r
+                       if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;\r
+                       val = ld_word(&fs->win[clst * 2 % SS(fs)]);\r
+                       break;\r
+\r
+               case FS_FAT32 :\r
+                       if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;\r
+                       val = ld_dword(&fs->win[clst * 4 % SS(fs)]) & 0x0FFFFFFF;\r
+                       break;\r
+#if _FS_EXFAT\r
+               case FS_EXFAT :\r
+                       if (obj->objsize) {\r
+                               DWORD cofs = clst - obj->sclust;        /* Offset from start cluster */\r
+                               DWORD clen = (DWORD)((obj->objsize - 1) / SS(fs)) / fs->csize;  /* Number of clusters - 1 */\r
+\r
+                               if (obj->stat == 2) {   /* Is there no valid chain on the FAT? */\r
+                                       if (cofs <= clen) {\r
+                                               val = (cofs == clen) ? 0x7FFFFFFF : clst + 1;   /* Generate the value */\r
+                                               break;\r
+                                       }\r
+                               }\r
+                               if (obj->stat == 3 && cofs < obj->n_cont) {     /* Is it in the contiguous part? */\r
+                                       val = clst + 1;         /* Generate the value */\r
+                                       break;\r
+                               }\r
+                               if (obj->stat != 2) {   /* Get value from FAT if FAT chain is valid */\r
+                                       if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;\r
+                                       val = ld_dword(&fs->win[clst * 4 % SS(fs)]) & 0x7FFFFFFF;\r
+                                       break;\r
+                               }\r
+                       }\r
+                       /* Go default */\r
+#endif\r
+               default:\r
+                       val = 1;        /* Internal error */\r
+               }\r
+       }\r
+\r
+       return val;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* FAT access - Change value of a FAT entry                              */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+#if !_FS_READONLY\r
+static\r
+FRESULT put_fat (      /* FR_OK(0):succeeded, !=0:error */\r
+       FATFS* fs,              /* Corresponding object */\r
+       DWORD clst,             /* FAT index number (cluster number) to be changed */\r
+       DWORD val               /* New value to be set to the entry */\r
+)\r
+{\r
+       UINT bc;\r
+       BYTE *p;\r
+       FRESULT res = FR_INT_ERR;\r
+\r
+\r
+       if (clst >= 2 && clst < fs->n_fatent) { /* Check if in valid range */\r
+               switch (fs->fs_type) {\r
+               case FS_FAT12 : /* Bitfield items */\r
+                       bc = (UINT)clst; bc += bc / 2;\r
+                       res = move_window(fs, fs->fatbase + (bc / SS(fs)));\r
+                       if (res != FR_OK) break;\r
+                       p = &fs->win[bc++ % SS(fs)];\r
+                       *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;\r
+                       fs->wflag = 1;\r
+                       res = move_window(fs, fs->fatbase + (bc / SS(fs)));\r
+                       if (res != FR_OK) break;\r
+                       p = &fs->win[bc % SS(fs)];\r
+                       *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));\r
+                       fs->wflag = 1;\r
+                       break;\r
+\r
+               case FS_FAT16 : /* WORD aligned items */\r
+                       res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));\r
+                       if (res != FR_OK) break;\r
+                       st_word(&fs->win[clst * 2 % SS(fs)], (WORD)val);\r
+                       fs->wflag = 1;\r
+                       break;\r
+\r
+               case FS_FAT32 : /* DWORD aligned items */\r
+#if _FS_EXFAT\r
+               case FS_EXFAT :\r
+#endif\r
+                       res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));\r
+                       if (res != FR_OK) break;\r
+                       if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {\r
+                               val = (val & 0x0FFFFFFF) | (ld_dword(&fs->win[clst * 4 % SS(fs)]) & 0xF0000000);\r
+                       }\r
+                       st_dword(&fs->win[clst * 4 % SS(fs)], val);\r
+                       fs->wflag = 1;\r
+                       break;\r
+               }\r
+       }\r
+       return res;\r
+}\r
+#endif /* !_FS_READONLY */\r
+\r
+\r
+\r
+\r
+#if _FS_EXFAT && !_FS_READONLY\r
+/*-----------------------------------------------------------------------*/\r
+/* exFAT: Accessing FAT and Allocation Bitmap                            */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+/*---------------------------------------------*/\r
+/* exFAT: Find a contiguous free cluster block */\r
+/*---------------------------------------------*/\r
+static\r
+DWORD find_bitmap (    /* 0:No free cluster, 2..:Free cluster found, 0xFFFFFFFF:Disk error */\r
+       FATFS* fs,      /* File system object */\r
+       DWORD clst,     /* Cluster number to scan from */\r
+       DWORD ncl       /* Number of contiguous clusters to find (1..) */\r
+)\r
+{\r
+       BYTE bm, bv;\r
+       UINT i;\r
+       DWORD val, scl, ctr;\r
+\r
+\r
+       clst -= 2;      /* The first bit in the bitmap corresponds to cluster #2 */\r
+       if (clst >= fs->n_fatent - 2) clst = 0;\r
+       scl = val = clst; ctr = 0;\r
+       for (;;) {\r
+               if (move_window(fs, fs->database + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF;\r
+               i = val / 8 & (SS(fs) - 1); bm = 1 << (val % 8);\r
+               do {\r
+                       do {\r
+                               bv = fs->win[i] & bm; bm <<= 1;         /* Get bit value */\r
+                               if (++val >= fs->n_fatent - 2) {        /* Next cluster (with wrap-around) */\r
+                                       val = 0; bm = 0; i = 4096;\r
+                               }\r
+                               if (!bv) {      /* Is it a free cluster? */\r
+                                       if (++ctr == ncl) return scl + 2;       /* Check run length */\r
+                               } else {\r
+                                       scl = val; ctr = 0;             /* Encountered a live cluster, restart to scan */\r
+                               }\r
+                               if (val == clst) return 0;      /* All cluster scanned? */\r
+                       } while (bm);\r
+                       bm = 1;\r
+               } while (++i < SS(fs));\r
+       }\r
+}\r
+\r
+/*------------------------------------*/\r
+/* exFAT: Set/Clear a block of bitmap */\r
+/*------------------------------------*/\r
+static\r
+FRESULT change_bitmap (\r
+       FATFS* fs,      /* File system object */\r
+       DWORD clst,     /* Cluster number to change from */\r
+       DWORD ncl,      /* Number of clusters to be changed */\r
+       int bv          /* bit value to be set (0 or 1) */\r
+)\r
+{\r
+       BYTE bm;\r
+       UINT i;\r
+       DWORD sect;\r
+\r
+\r
+       clst -= 2;      /* The first bit corresponds to cluster #2 */\r
+       sect = fs->database + clst / 8 / SS(fs);        /* Sector address */\r
+       i = clst / 8 & (SS(fs) - 1);                            /* Byte offset in the sector */\r
+       bm = 1 << (clst % 8);                                           /* Bit mask in the byte */\r
+       for (;;) {\r
+               if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR;\r
+               do {\r
+                       do {\r
+                               if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR;     /* Is the bit expected value? */\r
+                               fs->win[i] ^= bm;       /* Flip the bit */\r
+                               fs->wflag = 1;\r
+                               if (--ncl == 0) return FR_OK;   /* All bits processed? */\r
+                       } while (bm <<= 1);             /* Next bit */\r
+                       bm = 1;\r
+               } while (++i < SS(fs));         /* Next byte */\r
+       }\r
+}\r
+\r
+\r
+/*---------------------------------------------*/\r
+/* Complement contiguous part of the FAT chain */\r
+/*---------------------------------------------*/\r
+static\r
+FRESULT fill_fat_chain (\r
+       _FDID* obj      /* Pointer to the corresponding object */\r
+)\r
+{\r
+       FRESULT res;\r
+       DWORD cl, n;\r
+\r
+       if (obj->stat == 3) {   /* Has the object got fragmented? */\r
+               for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) { /* Create cluster chain on the FAT */\r
+                       res = put_fat(obj->fs, cl, cl + 1);\r
+                       if (res != FR_OK) return res;\r
+               }\r
+               obj->stat = 0;  /* Change status 'FAT chain is valid' */\r
+       }\r
+       return FR_OK;\r
+}\r
+\r
+#endif\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* FAT handling - Remove a cluster chain                                 */\r
+/*-----------------------------------------------------------------------*/\r
+#if !_FS_READONLY\r
+static\r
+FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */\r
+       _FDID* obj,                     /* Corresponding object */\r
+       DWORD clst,                     /* Cluster to remove a chain from */\r
+       DWORD pclst                     /* Previous cluster of clst (0:an entire chain) */\r
+)\r
+{\r
+       FRESULT res = FR_OK;\r
+       DWORD nxt;\r
+       FATFS *fs = obj->fs;\r
+#if _FS_EXFAT || _USE_TRIM\r
+       DWORD scl = clst, ecl = clst;\r
+#endif\r
+#if _USE_TRIM\r
+       DWORD rt[2];\r
+#endif\r
+\r
+       if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR;        /* Check if in valid range */\r
+\r
+       /* Mark the previous cluster 'EOC' on the FAT if it exists */\r
+       if (pclst && (!_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) {\r
+               res = put_fat(fs, pclst, 0xFFFFFFFF);\r
+               if (res != FR_OK) return res;\r
+       }\r
+\r
+       /* Remove the chain */\r
+       do {\r
+               nxt = get_fat(obj, clst);                       /* Get cluster status */\r
+               if (nxt == 0) break;                            /* Empty cluster? */\r
+               if (nxt == 1) return FR_INT_ERR;        /* Internal error? */\r
+               if (nxt == 0xFFFFFFFF) return FR_DISK_ERR;      /* Disk error? */\r
+               if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {\r
+                       res = put_fat(fs, clst, 0);             /* Mark the cluster 'free' on the FAT */\r
+                       if (res != FR_OK) return res;\r
+               }\r
+               if (fs->free_clst != 0xFFFFFFFF) {      /* Update FSINFO */\r
+                       fs->free_clst++;\r
+                       fs->fsi_flag |= 1;\r
+               }\r
+#if _FS_EXFAT || _USE_TRIM\r
+               if (ecl + 1 == nxt) {   /* Is next cluster contiguous? */\r
+                       ecl = nxt;\r
+               } else {                                /* End of contiguous cluster block */ \r
+#if _FS_EXFAT\r
+                       if (fs->fs_type == FS_EXFAT) {\r
+                               res = change_bitmap(fs, scl, ecl - scl + 1, 0); /* Mark the cluster block 'free' on the bitmap */\r
+                               if (res != FR_OK) return res;\r
+                       }\r
+#endif\r
+#if _USE_TRIM\r
+                       rt[0] = clust2sect(fs, scl);                                    /* Start sector */\r
+                       rt[1] = clust2sect(fs, ecl) + fs->csize - 1;    /* End sector */\r
+                       disk_ioctl(fs->drv, CTRL_TRIM, rt);                             /* Inform device the block can be erased */\r
+#endif\r
+                       scl = ecl = nxt;\r
+               }\r
+#endif\r
+               clst = nxt;                                     /* Next cluster */\r
+       } while (clst < fs->n_fatent);  /* Repeat while not the last link */\r
+\r
+#if _FS_EXFAT\r
+       if (fs->fs_type == FS_EXFAT) {\r
+               if (pclst == 0) {       /* Does object have no chain? */\r
+                       obj->stat = 0;          /* Change the object status 'initial' */\r
+               } else {\r
+                       if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) {     /* Did the chain got contiguous? */\r
+                               obj->stat = 2;  /* Change the object status 'contiguous' */\r
+                       }\r
+               }\r
+       }\r
+#endif\r
+       return FR_OK;\r
+}\r
+#endif\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* FAT handling - Stretch a chain or Create a new 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
+       _FDID* obj,                     /* Corresponding object */\r
+       DWORD clst                      /* Cluster# to stretch, 0:Create a new chain */\r
+)\r
+{\r
+       DWORD cs, ncl, scl;\r
+       FRESULT res;\r
+       FATFS *fs = obj->fs;\r
+\r
+\r
+       if (clst == 0) {        /* Create a new chain */\r
+               scl = fs->last_clst;                            /* Get suggested cluster to start at */\r
+               if (scl == 0 || scl >= fs->n_fatent) scl = 1;\r
+       }\r
+       else {                          /* Stretch current chain */\r
+               cs = get_fat(obj, clst);                        /* Check the cluster status */\r
+               if (cs < 2) return 1;                           /* Invalid value */\r
+               if (cs == 0xFFFFFFFF) return cs;        /* A disk error occurred */\r
+               if (cs < fs->n_fatent) return cs;       /* It is already followed by next cluster */\r
+               scl = clst;\r
+       }\r
+\r
+#if _FS_EXFAT\r
+       if (fs->fs_type == FS_EXFAT) {  /* At the exFAT */\r
+               ncl = find_bitmap(fs, scl, 1);                          /* Find a free cluster */\r
+               if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl;  /* No free cluster or hard error? */\r
+               res = change_bitmap(fs, ncl, 1, 1);                     /* Mark the cluster 'in use' */\r
+               if (res == FR_INT_ERR) return 1;\r
+               if (res == FR_DISK_ERR) return 0xFFFFFFFF;\r
+               if (clst == 0) {                                                        /* Is it a new chain? */\r
+                       obj->stat = 2;                                                  /* Set status 'contiguous chain' */\r
+               } else {                                                                        /* This is a stretched chain */\r
+                       if (obj->stat == 2 && ncl != scl + 1) { /* Is the chain got fragmented? */\r
+                               obj->n_cont = scl - obj->sclust;        /* Set size of the contiguous part */\r
+                               obj->stat = 3;                                          /* Change status 'just fragmented' */\r
+                       }\r
+               }\r
+       } else\r
+#endif\r
+       {       /* At the FAT12/16/32 */\r
+               ncl = scl;      /* Start cluster */\r
+               for (;;) {\r
+                       ncl++;                                                  /* Next cluster */\r
+                       if (ncl >= fs->n_fatent) {              /* Check wrap-around */\r
+                               ncl = 2;\r
+                               if (ncl > scl) return 0;        /* No free cluster */\r
+                       }\r
+                       cs = get_fat(obj, ncl);                 /* Get the cluster status */\r
+                       if (cs == 0) break;                             /* Found a free cluster */\r
+                       if (cs == 1 || cs == 0xFFFFFFFF) return cs;     /* An error occurred */\r
+                       if (ncl == scl) return 0;               /* No free cluster */\r
+               }\r
+       }\r
+\r
+       if (_FS_EXFAT && fs->fs_type == FS_EXFAT && obj->stat == 2) {   /* Is it a contiguous chain? */\r
+               res = FR_OK;                                            /* FAT does not need to be written */\r
+       } else {\r
+               res = put_fat(fs, ncl, 0xFFFFFFFF);     /* Mark the new cluster 'EOC' */\r
+               if (res == FR_OK && clst) {\r
+                       res = put_fat(fs, clst, ncl);   /* Link it from the previous one if needed */\r
+               }\r
+       }\r
+\r
+       if (res == FR_OK) {                     /* Update FSINFO if function succeeded. */\r
+               fs->last_clst = ncl;\r
+               if (fs->free_clst < fs->n_fatent - 2) fs->free_clst--;\r
+               fs->fsi_flag |= 1;\r
+       } else {\r
+               ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;    /* Failed. Create error status */\r
+       }\r
+\r
+       return ncl;             /* Return new cluster number or error status */\r
+}\r
+#endif /* !_FS_READONLY */\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* FAT handling - Convert offset into cluster with link map table        */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+#if _USE_FASTSEEK\r
+static\r
+DWORD clmt_clust (     /* <2:Error, >=2:Cluster number */\r
+       FIL* fp,                /* Pointer to the file object */\r
+       DWORD ofs               /* File offset to be converted to cluster# */\r
+)\r
+{\r
+       DWORD cl, ncl, *tbl;\r
+       FATFS *fs = fp->obj.fs;\r
+\r
+\r
+       tbl = fp->cltbl + 1;    /* Top of CLMT */\r
+       cl = ofs / SS(fs) / fs->csize;  /* Cluster order from top of the file */\r
+       for (;;) {\r
+               ncl = *tbl++;                   /* Number of cluters in the fragment */\r
+               if (ncl == 0) return 0; /* End of table? (error) */\r
+               if (cl < ncl) break;    /* In this fragment? */\r
+               cl -= ncl; tbl++;               /* Next fragment */\r
+       }\r
+       return cl + *tbl;       /* Return the cluster number */\r
+}\r
+#endif /* _USE_FASTSEEK */\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Directory handling - Set directory index                              */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+FRESULT dir_sdi (      /* FR_OK(0):succeeded, !=0:error */\r
+       DIR* dp,                /* Pointer to directory object */\r
+       DWORD ofs               /* Offset of directory table */\r
+)\r
+{\r
+       DWORD csz, clst;\r
+       FATFS *fs = dp->obj.fs;\r
+\r
+\r
+       if (ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) {    /* Check range of offset and alignment */\r
+               return FR_INT_ERR;\r
+       }\r
+       dp->dptr = ofs;                         /* Set current offset */\r
+       clst = dp->obj.sclust;          /* Table start cluster (0:root) */\r
+       if (clst == 0 && fs->fs_type >= FS_FAT32) {     /* Replace cluster# 0 with root cluster# */\r
+               clst = fs->dirbase;\r
+               if (_FS_EXFAT) dp->obj.stat = 0;        /* exFAT: Root dir has an FAT chain */\r
+       }\r
+\r
+       if (clst == 0) {        /* Static table (root-directory in FAT12/16) */\r
+               if (ofs / SZDIRE >= fs->n_rootdir)      return FR_INT_ERR;      /* Is index out of range? */\r
+               dp->sect = fs->dirbase;\r
+\r
+       } else {                        /* Dynamic table (sub-directory or root-directory in FAT32+) */\r
+               csz = (DWORD)fs->csize * SS(fs);        /* Bytes per cluster */\r
+               while (ofs >= csz) {                            /* Follow cluster chain */\r
+                       clst = get_fat(&dp->obj, clst);                         /* Get next cluster */\r
+                       if (clst == 0xFFFFFFFF) return FR_DISK_ERR;     /* Disk error */\r
+                       if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR;        /* Reached to end of table or internal error */\r
+                       ofs -= csz;\r
+               }\r
+               dp->sect = clust2sect(fs, clst);\r
+       }\r
+       dp->clust = clst;                                       /* Current cluster# */\r
+       if (!dp->sect) return FR_INT_ERR;\r
+       dp->sect += ofs / SS(fs);                       /* Sector# of the directory entry */\r
+       dp->dir = fs->win + (ofs % SS(fs));     /* Pointer to the entry in the win[] */\r
+\r
+       return FR_OK;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Directory handling - Move directory table index next                  */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+FRESULT dir_next (     /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */\r
+       DIR* dp,                /* Pointer to the directory object */\r
+       int stretch             /* 0: Do not stretch table, 1: Stretch table if needed */\r
+)\r
+{\r
+       DWORD ofs, clst;\r
+       FATFS *fs = dp->obj.fs;\r
+#if !_FS_READONLY\r
+       UINT n;\r
+#endif\r
+\r
+       ofs = dp->dptr + SZDIRE;        /* Next entry */\r
+       if (!dp->sect || ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) return FR_NO_FILE;      /* Report EOT when offset has reached max value */\r
+\r
+       if (ofs % SS(fs) == 0) {        /* Sector changed? */\r
+               dp->sect++;                             /* Next sector */\r
+\r
+               if (!dp->clust) {               /* Static table */\r
+                       if (ofs / SZDIRE >= fs->n_rootdir) {    /* Report EOT if it reached end of static table */\r
+                               dp->sect = 0; return FR_NO_FILE;\r
+                       }\r
+               }\r
+               else {                                  /* Dynamic table */\r
+                       if ((ofs / SS(fs) & (fs->csize - 1)) == 0) {            /* Cluster changed? */\r
+                               clst = get_fat(&dp->obj, dp->clust);                    /* Get next cluster */\r
+                               if (clst <= 1) return FR_INT_ERR;                               /* Internal error */\r
+                               if (clst == 0xFFFFFFFF) return FR_DISK_ERR;             /* Disk error */\r
+                               if (clst >= fs->n_fatent) {                                             /* Reached end of dynamic table */\r
+#if !_FS_READONLY\r
+                                       if (!stretch) {                                                         /* If no stretch, report EOT */\r
+                                               dp->sect = 0; return FR_NO_FILE;\r
+                                       }\r
+                                       clst = create_chain(&dp->obj, dp->clust);       /* Allocate a cluster */\r
+                                       if (clst == 0) return FR_DENIED;                        /* No free cluster */\r
+                                       if (clst == 1) return FR_INT_ERR;                       /* Internal error */\r
+                                       if (clst == 0xFFFFFFFF) return FR_DISK_ERR;     /* Disk error */\r
+                                       /* Clean-up the stretched table */\r
+                                       if (_FS_EXFAT) dp->obj.stat |= 4;                       /* The directory needs to be updated */\r
+                                       if (sync_window(fs) != FR_OK) return FR_DISK_ERR;       /* Flush disk access window */\r
+                                       mem_set(fs->win, 0, SS(fs));                            /* Clear window buffer */\r
+                                       for (n = 0, fs->winsect = clust2sect(fs, clst); n < fs->csize; n++, fs->winsect++) {    /* Fill the new cluster with 0 */\r
+                                               fs->wflag = 1;\r
+                                               if (sync_window(fs) != FR_OK) return FR_DISK_ERR;\r
+                                       }\r
+                                       fs->winsect -= n;                                                       /* Restore window offset */\r
+#else\r
+                                       if (!stretch) dp->sect = 0;                                     /* If no stretch, report EOT (this is to suppress warning) */\r
+                                       dp->sect = 0; return FR_NO_FILE;                        /* Report EOT */\r
+#endif\r
+                               }\r
+                               dp->clust = clst;               /* Initialize data for new cluster */\r
+                               dp->sect = clust2sect(fs, clst);\r
+                       }\r
+               }\r
+       }\r
+       dp->dptr = ofs;                                         /* Current entry */\r
+       dp->dir = &fs->win[ofs % SS(fs)];       /* Pointer to the entry in the win[] */\r
+\r
+       return FR_OK;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Directory handling - Reserve a block of directory entries             */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+#if !_FS_READONLY\r
+static\r
+FRESULT dir_alloc (    /* FR_OK(0):succeeded, !=0:error */\r
+       DIR* dp,                /* Pointer to the directory object */\r
+       UINT nent               /* Number of contiguous entries to allocate */\r
+)\r
+{\r
+       FRESULT res;\r
+       UINT n;\r
+       FATFS *fs = dp->obj.fs;\r
+\r
+\r
+       res = dir_sdi(dp, 0);\r
+       if (res == FR_OK) {\r
+               n = 0;\r
+               do {\r
+                       res = move_window(fs, dp->sect);\r
+                       if (res != FR_OK) break;\r
+#if _FS_EXFAT\r
+                       if (fs->fs_type == FS_EXFAT ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) {\r
+#else\r
+                       if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) {\r
+#endif\r
+                               if (++n == nent) break; /* A block of contiguous free entries is found */\r
+                       } else {\r
+                               n = 0;                                  /* Not a blank entry. Restart to search */\r
+                       }\r
+                       res = dir_next(dp, 1);\r
+               } while (res == FR_OK); /* Next entry with table stretch enabled */\r
+       }\r
+\r
+       if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */\r
+       return res;\r
+}\r
+#endif\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* FAT: Directory handling - Load/Store start cluster number             */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+DWORD ld_clust (       /* Returns the top cluster value of the SFN entry */\r
+       FATFS* fs,              /* Pointer to the fs object */\r
+       const BYTE* dir /* Pointer to the key entry */\r
+)\r
+{\r
+       DWORD cl;\r
+\r
+       cl = ld_word(dir + DIR_FstClusLO);\r
+       if (fs->fs_type == FS_FAT32) {\r
+               cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16;\r
+       }\r
+\r
+       return cl;\r
+}\r
+\r
+\r
+#if !_FS_READONLY\r
+static\r
+void st_clust (\r
+       FATFS* fs,      /* Pointer to the fs object */\r
+       BYTE* dir,      /* Pointer to the key entry */\r
+       DWORD cl        /* Value to be set */\r
+)\r
+{\r
+       st_word(dir + DIR_FstClusLO, (WORD)cl);\r
+       if (fs->fs_type == FS_FAT32) {\r
+               st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16));\r
+       }\r
+}\r
+#endif\r
+\r
+\r
+\r
+\r
+/*------------------------------------------------------------------------*/\r
+/* FAT-LFN: LFN handling                                                  */\r
+/*------------------------------------------------------------------------*/\r
+#if _USE_LFN != 0\r
+static\r
+const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30};     /* Offset of LFN characters in the directory entry */\r
+\r
+/*--------------------------------------------------------*/\r
+/* FAT-LFN: Compare a part of file name with an LFN entry */\r
+/*--------------------------------------------------------*/\r
+static\r
+int cmp_lfn (                          /* 1:matched, 0:not matched */\r
+       const WCHAR* lfnbuf,    /* Pointer to the LFN working buffer to be compared */\r
+       BYTE* dir                               /* Pointer to the directory entry containing the part of LFN */\r
+)\r
+{\r
+       UINT i, s;\r
+       WCHAR wc, uc;\r
+\r
+\r
+       if (ld_word(dir + LDIR_FstClusLO) != 0) return 0;       /* Check LDIR_FstClusLO */\r
+\r
+       i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;  /* Offset in the LFN buffer */\r
+\r
+       for (wc = 1, s = 0; s < 13; s++) {              /* Process all characters in the entry */\r
+               uc = ld_word(dir + LfnOfs[s]);          /* Pick an LFN character */\r
+               if (wc) {\r
+                       if (i >= _MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) {     /* Compare it */\r
+                               return 0;                                       /* Not matched */\r
+                       }\r
+                       wc = uc;\r
+               } else {\r
+                       if (uc != 0xFFFF) return 0;             /* Check filler */\r
+               }\r
+       }\r
+\r
+       if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) return 0;        /* Last segment matched but different length */\r
+\r
+       return 1;               /* The part of LFN matched */\r
+}\r
+\r
+\r
+\r
+#if _FS_MINIMIZE <= 1 || _FS_EXFAT\r
+/*-----------------------------------------------------*/\r
+/* FAT-LFN: Pick a part of file name from an LFN entry */\r
+/*-----------------------------------------------------*/\r
+static\r
+int pick_lfn (                 /* 1:succeeded, 0:buffer overflow or invalid LFN entry */\r
+       WCHAR* lfnbuf,          /* Pointer to the LFN working buffer */\r
+       BYTE* dir                       /* Pointer to the LFN entry */\r
+)\r
+{\r
+       UINT i, s;\r
+       WCHAR wc, uc;\r
+\r
+\r
+       if (ld_word(dir + LDIR_FstClusLO) != 0) return 0;       /* Check LDIR_FstClusLO */\r
+\r
+       i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;  /* Offset in the LFN buffer */\r
+\r
+       for (wc = 1, s = 0; s < 13; s++) {              /* Process all characters in the entry */\r
+               uc = ld_word(dir + LfnOfs[s]);          /* Pick an LFN character */\r
+               if (wc) {\r
+                       if (i >= _MAX_LFN) return 0;    /* Buffer overflow? */\r
+                       lfnbuf[i++] = wc = uc;                  /* Store it */\r
+               } else {\r
+                       if (uc != 0xFFFF) return 0;             /* Check filler */\r
+               }\r
+       }\r
+\r
+       if (dir[LDIR_Ord] & LLEF) {                             /* Put terminator if it is the last LFN part */\r
+               if (i >= _MAX_LFN) return 0;            /* Buffer overflow? */\r
+               lfnbuf[i] = 0;\r
+       }\r
+\r
+       return 1;               /* The part of LFN is valid */\r
+}\r
+#endif\r
+\r
+#if !_FS_READONLY\r
+/*-----------------------------------------*/\r
+/* FAT-LFN: Create an entry of LFN entries */\r
+/*-----------------------------------------*/\r
+static\r
+void put_lfn (\r
+       const WCHAR* lfn,       /* Pointer to the LFN */\r
+       BYTE* dir,                      /* Pointer to the LFN entry to be created */\r
+       BYTE ord,                       /* LFN order (1-20) */\r
+       BYTE sum                        /* Checksum of the corresponding SFN */\r
+)\r
+{\r
+       UINT i, s;\r
+       WCHAR wc;\r
+\r
+\r
+       dir[LDIR_Chksum] = sum;                 /* Set checksum */\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 working buffer */\r
+       s = wc = 0;\r
+       do {\r
+               if (wc != 0xFFFF) wc = lfn[i++];        /* Get an effective character */\r
+               st_word(dir + LfnOfs[s], wc);           /* Put it */\r
+               if (wc == 0) wc = 0xFFFF;               /* Padding characters for left locations */\r
+       } while (++s < 13);\r
+       if (wc == 0xFFFF || !lfn[i]) ord |= LLEF;       /* Last 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
+/* FAT-LFN: Create a Numbered SFN                                        */\r
+/*-----------------------------------------------------------------------*/\r
+#if _USE_LFN != 0 && !_FS_READONLY\r
+static\r
+void gen_numname (\r
+       BYTE* dst,                      /* Pointer to the buffer to store numbered SFN */\r
+       const BYTE* src,        /* Pointer to SFN */\r
+       const WCHAR* lfn,       /* Pointer to LFN */\r
+       UINT seq                        /* Sequence number */\r
+)\r
+{\r
+       BYTE ns[8], c;\r
+       UINT i, j;\r
+       WCHAR wc;\r
+       DWORD sr;\r
+\r
+\r
+       mem_cpy(dst, src, 11);\r
+\r
+       if (seq > 5) {  /* In case of many collisions, generate a hash number instead of sequential number */\r
+               sr = seq;\r
+               while (*lfn) {  /* Create a CRC */\r
+                       wc = *lfn++;\r
+                       for (i = 0; i < 16; i++) {\r
+                               sr = (sr << 1) + (wc & 1);\r
+                               wc >>= 1;\r
+                               if (sr & 0x10000) sr ^= 0x11021;\r
+                       }\r
+               }\r
+               seq = (UINT)sr;\r
+       }\r
+\r
+       /* itoa (hexdecimal) */\r
+       i = 7;\r
+       do {\r
+               c = (seq % 16) + '0';\r
+               if (c > '9') c += 7;\r
+               ns[i--] = c;\r
+               seq /= 16;\r
+       } while (seq);\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
+/* FAT-LFN: Calculate checksum of an SFN entry                           */\r
+/*-----------------------------------------------------------------------*/\r
+#if _USE_LFN != 0\r
+static\r
+BYTE sum_sfn (\r
+       const BYTE* dir         /* Pointer to the SFN entry */\r
+)\r
+{\r
+       BYTE sum = 0;\r
+       UINT n = 11;\r
+\r
+       do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);\r
+       return sum;\r
+}\r
+#endif\r
+\r
+\r
+\r
+\r
+#if _FS_EXFAT\r
+/*-----------------------------------------------------------------------*/\r
+/* exFAT: Directory handling - Load/Store a block of directory entries   */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+WORD xdir_sum (                        /* Get checksum of the directoly block */\r
+       const BYTE* dir         /* Directory entry block to be calculated */\r
+)\r
+{\r
+       UINT i, szblk;\r
+       WORD sum;\r
+\r
+\r
+       szblk = (dir[XDIR_NumSec] + 1) * SZDIRE;\r
+       for (i = sum = 0; i < szblk; i++) {\r
+               if (i == XDIR_SetSum) { /* Skip sum field */\r
+                       i++;\r
+               } else {\r
+                       sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i];\r
+               }\r
+       }\r
+       return sum;\r
+}\r
+\r
+\r
+\r
+static\r
+WORD xname_sum (               /* Get check sum (to be used as hash) of the name */\r
+       const WCHAR* name       /* File name to be calculated */\r
+)\r
+{\r
+       WCHAR chr;\r
+       WORD sum = 0;\r
+\r
+\r
+       while ((chr = *name++) != 0) {\r
+               chr = ff_wtoupper(chr);         /* File name needs to be ignored case */\r
+               sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF);\r
+               sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8);\r
+       }\r
+       return sum;\r
+}\r
+\r
+\r
+/*------------------------------------------------------*/\r
+/* exFAT: Get object information from a directory block */\r
+/*------------------------------------------------------*/\r
+static\r
+void get_xdir_info (\r
+       BYTE* dirb,                     /* Pointer to the direcotry entry block 85+C0+C1s */\r
+       FILINFO* fno            /* Buffer to store the extracted file information */\r
+)\r
+{\r
+       UINT di, si, nc;\r
+       WCHAR w;\r
+\r
+       /* Get file name */\r
+#if _LFN_UNICODE\r
+       if (dirb[XDIR_NumName] <= _MAX_LFN) {\r
+               for (si = SZDIRE * 2, di = 0; di < dirb[XDIR_NumName]; si += 2, di++) {\r
+                       if ((si % SZDIRE) == 0) si += 2;        /* Skip entry type field */\r
+                       w = ld_word(dirb + si);                         /* Get a character */\r
+                       fno->fname[di] = w;                                     /* Store it */\r
+               }\r
+       } else {\r
+               di = 0; /* Buffer overflow and inaccessible object */\r
+       }\r
+#else\r
+       for (si = SZDIRE * 2, di = nc = 0; nc < dirb[XDIR_NumName]; si += 2, nc++) {\r
+               if ((si % SZDIRE) == 0) si += 2;        /* Skip entry type field */\r
+               w = ld_word(dirb + si);                         /* Get a character */\r
+               w = ff_convert(w, 0);                           /* Unicode -> OEM */\r
+               if (w == 0) { di = 0; break; }          /* Could not be converted and inaccessible object */\r
+               if (_DF1S && w >= 0x100) {                      /* Put 1st byte if it is a DBC (always false at SBCS cfg) */\r
+                       fno->fname[di++] = (char)(w >> 8);\r
+               }\r
+               if (di >= _MAX_LFN) { di = 0; break; }  /* Buffer overflow and inaccessible object */\r
+               fno->fname[di++] = (char)w;\r
+       }\r
+#endif\r
+       if (di == 0) fno->fname[di++] = '?';    /* Inaccessible object? */\r
+       fno->fname[di] = 0;                                             /* Terminate file name */\r
+\r
+       fno->altname[0] = 0;                                                    /* No SFN */\r
+       fno->fattrib = dirb[XDIR_Attr];                                 /* Attribute */\r
+       fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(dirb + XDIR_FileSize);      /* Size */\r
+       fno->ftime = ld_word(dirb + XDIR_ModTime + 0);  /* Time */\r
+       fno->fdate = ld_word(dirb + XDIR_ModTime + 2);  /* Date */\r
+}\r
+\r
+\r
+/*-----------------------------------*/\r
+/* exFAT: Get a directry entry block */\r
+/*-----------------------------------*/\r
+static\r
+FRESULT load_xdir (    /* FR_INT_ERR: invalid entry block */\r
+       DIR* dp                 /* Pointer to the reading direcotry object pointing the 85 entry */\r
+)\r
+{\r
+       FRESULT res;\r
+       UINT i, nent;\r
+       BYTE* dirb = dp->obj.fs->dirbuf;        /* Pointer to the on-memory direcotry entry block 85+C0+C1s */\r
+\r
+\r
+       /* Load 85 entry */\r
+       res = move_window(dp->obj.fs, dp->sect);\r
+       if (res != FR_OK) return res;\r
+       if (dp->dir[XDIR_Type] != 0x85) return FR_INT_ERR;\r
+       mem_cpy(&dirb[0], dp->dir, SZDIRE);\r
+       nent = dirb[XDIR_NumSec] + 1;\r
+\r
+       /* Load C0 entry */\r
+       res = dir_next(dp, 0);\r
+       if (res != FR_OK) return res;\r
+       res = move_window(dp->obj.fs, dp->sect);\r
+       if (res != FR_OK) return res;\r
+       if (dp->dir[XDIR_Type] != 0xC0) return FR_INT_ERR;\r
+       mem_cpy(dirb + SZDIRE, dp->dir, SZDIRE);\r
+\r
+       /* Load C1 entries */\r
+       if (nent < 3 || nent > 19) return FR_NO_FILE;\r
+       i = SZDIRE * 2; nent *= SZDIRE;\r
+       do {\r
+               res = dir_next(dp, 0);\r
+               if (res != FR_OK) return res;\r
+               res = move_window(dp->obj.fs, dp->sect);\r
+               if (res != FR_OK) return res;\r
+               if (dp->dir[XDIR_Type] != 0xC1) return FR_INT_ERR;\r
+               mem_cpy(dirb + i, dp->dir, SZDIRE);\r
+               i += SZDIRE;\r
+       } while (i < nent);\r
+\r
+       /* Sanity check */\r
+       if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR;\r
+\r
+       return FR_OK;\r
+}\r
+\r
+\r
+#if !_FS_READONLY || _FS_RPATH != 0 \r
+/*------------------------------------------------*/\r
+/* exFAT: Load the object's directory entry block */\r
+/*------------------------------------------------*/\r
+static\r
+FRESULT load_obj_dir ( \r
+       DIR* dp,                        /* Blank directory object to be used to access containing direcotry */\r
+       const _FDID* obj        /* Object with containing directory information */\r
+)\r
+{\r
+       FRESULT res;\r
+\r
+\r
+       /* Open object containing directory */\r
+       dp->obj.fs = obj->fs;\r
+       dp->obj.sclust = obj->c_scl;\r
+       dp->obj.stat = (BYTE)obj->c_size;\r
+       dp->obj.objsize = obj->c_size & 0xFFFFFF00;\r
+       dp->blk_ofs = obj->c_ofs;\r
+\r
+       res = dir_sdi(dp, dp->blk_ofs); /* Goto the block location */\r
+       if (res == FR_OK) {\r
+               res = load_xdir(dp);            /* Load the object's entry block */\r
+       }\r
+       return res;\r
+}\r
+#endif\r
+\r
+\r
+#if !_FS_READONLY\r
+/*-----------------------------------------------*/\r
+/* exFAT: Store the directory block to the media */\r
+/*-----------------------------------------------*/\r
+static\r
+FRESULT store_xdir (\r
+       DIR* dp                         /* Pointer to the direcotry object */\r
+)\r
+{\r
+       FRESULT res;\r
+       UINT nent;\r
+       WORD sum;\r
+       BYTE* dirb = dp->obj.fs->dirbuf;        /* Pointer to the direcotry entry block 85+C0+C1s */\r
+\r
+       /* Create set sum */\r
+       sum = xdir_sum(dirb);\r
+       st_word(dirb + XDIR_SetSum, sum);\r
+       nent = dirb[XDIR_NumSec] + 1;\r
+\r
+       res = dir_sdi(dp, dp->blk_ofs);\r
+       while (res == FR_OK && (res = move_window(dp->obj.fs, dp->sect)) == FR_OK) {\r
+               mem_cpy(dp->dir, dirb, SZDIRE);\r
+               dp->obj.fs->wflag = 1;\r
+               if (--nent == 0) break;\r
+               dirb += SZDIRE;\r
+               res = dir_next(dp, 0);\r
+       }\r
+       return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR;\r
+}\r
+\r
+\r
+/*-------------------------------------------*/\r
+/* exFAT: Create a new directory enrty block */\r
+/*-------------------------------------------*/\r
+static\r
+void create_xdir (\r
+       BYTE* dirb,                     /* Pointer to the direcotry entry block buffer */\r
+       const WCHAR* lfn        /* Pointer to the nul terminated file name */\r
+)\r
+{\r
+       UINT i;\r
+       BYTE nb, nc;\r
+       WCHAR chr;\r
+       WORD hash;\r
+\r
+\r
+       mem_set(dirb, 0, 2 * SZDIRE);                   /* Initialize 85+C0 entry */\r
+       dirb[XDIR_Type] = 0x85;\r
+       dirb[XDIR_Type + SZDIRE] = 0xC0;\r
+       hash = xname_sum(lfn);\r
+       st_word(dirb + XDIR_NameHash, hash);    /* Set name hash */\r
+\r
+       i = SZDIRE * 2; /* C1 offset */\r
+       nc = 0; nb = 1; chr = 1;\r
+       do {\r
+               dirb[i++] = 0xC1; dirb[i++] = 0;        /* Entry type C1 */\r
+               do {    /* Fill name field */\r
+                       if (chr && (chr = lfn[nc]) != 0) nc++;  /* Get a character if exist */\r
+                       st_word(dirb + i, chr); i += 2; /* Store it */\r
+               } while (i % SZDIRE);\r
+               nb++;\r
+       } while (lfn[nc]);      /* Fill next entry if any char follows */\r
+\r
+       dirb[XDIR_NumName] = nc;        /* Set name length */\r
+       dirb[XDIR_NumSec] = nb;         /* Set number of C0+C1s */\r
+}\r
+#endif\r
+#endif\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Read an object from the directory                                     */\r
+/*-----------------------------------------------------------------------*/\r
+#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT\r
+static\r
+FRESULT dir_read (\r
+       DIR* dp,                /* Pointer to the directory object */\r
+       int vol                 /* Filtered by 0:file/directory or 1:volume label */\r
+)\r
+{\r
+       FRESULT res = FR_NO_FILE;\r
+       FATFS *fs = dp->obj.fs;\r
+       BYTE a, c;\r
+#if _USE_LFN != 0\r
+       BYTE ord = 0xFF, sum = 0xFF;\r
+#endif\r
+\r
+       while (dp->sect) {\r
+               res = move_window(fs, dp->sect);\r
+               if (res != FR_OK) break;\r
+               c = dp->dir[DIR_Name];  /* Test for the entry type */\r
+               if (c == 0) { res = FR_NO_FILE; break; }        /* Reached to end of the directory */\r
+#if _FS_EXFAT\r
+               if (fs->fs_type == FS_EXFAT) {  /* At the exFAT */\r
+                       if (_USE_LABEL && vol) {\r
+                               if (c == 0x83) break;   /* Volume label entry? */\r
+                       } else {\r
+                               if (c == 0x85) {                /* Start of the entry block? */\r
+                                       dp->blk_ofs = dp->dptr; /* Set location of block */\r
+                                       res = load_xdir(dp);    /* Load the entry block */\r
+                                       if (res == FR_OK) {\r
+                                               dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK; /* Get attribute */\r
+                                       }\r
+                                       break;\r
+                               }\r
+                       }\r
+               } else\r
+#endif\r
+               {       /* At the FAT12/16/32 */\r
+                       dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */\r
+#if _USE_LFN != 0      /* LFN configuration */\r
+                       if (c == DDEM || c == '.' || (int)((a & ~AM_ARC) == AM_VOL) != vol) {   /* An entry without valid data */\r
+                               ord = 0xFF;\r
+                       } else {\r
+                               if (a == AM_LFN) {                      /* An LFN entry is found */\r
+                                       if (c & LLEF) {                 /* Is it start of an LFN sequence? */\r
+                                               sum = dp->dir[LDIR_Chksum];\r
+                                               c &= ~LLEF; ord = c;\r
+                                               dp->blk_ofs = dp->dptr;\r
+                                       }\r
+                                       /* Check LFN validity and capture it */\r
+                                       ord = (c == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(dp->lfn, dp->dir)) ? ord - 1 : 0xFF;\r
+                               } else {                                        /* An SFN entry is found */\r
+                                       if (ord || sum != sum_sfn(dp->dir)) {   /* Is there a valid LFN? */\r
+                                               dp->blk_ofs = 0xFFFFFFFF;                       /* It has no LFN. */\r
+                                       }\r
+                                       break;\r
+                               }\r
+                       }\r
+#else          /* Non LFN configuration */\r
+                       if (c != DDEM && c != '.' && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) {    /* Is it a valid entry? */\r
+                               break;\r
+                       }\r
+#endif\r
+               }\r
+               res = dir_next(dp, 0);          /* Next entry */\r
+               if (res != FR_OK) break;\r
+       }\r
+\r
+       if (res != FR_OK) dp->sect = 0;         /* Terminate the read operation on error or EOT */\r
+       return res;\r
+}\r
+#endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Directory handling - Find an object in the directory                  */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+FRESULT dir_find (     /* FR_OK(0):succeeded, !=0:error */\r
+       DIR* dp                 /* Pointer to the directory object with the file name */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs = dp->obj.fs;\r
+       BYTE c;\r
+#if _USE_LFN != 0\r
+       BYTE a, ord, sum;\r
+#endif\r
+\r
+       res = dir_sdi(dp, 0);                   /* Rewind directory object */\r
+       if (res != FR_OK) return res;\r
+#if _FS_EXFAT\r
+       if (fs->fs_type == FS_EXFAT) {  /* At the exFAT */\r
+               BYTE nc;\r
+               UINT di, ni;\r
+               WORD hash = xname_sum(dp->lfn);         /* Hash value of the name to find */\r
+\r
+               while ((res = dir_read(dp, 0)) == FR_OK) {      /* Read an item */\r
+                       if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue;      /* Skip the comparison if hash value mismatched */\r
+                       for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) { /* Compare the name */\r
+                               if ((di % SZDIRE) == 0) di += 2;\r
+                               if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(dp->lfn[ni])) break;\r
+                       }\r
+                       if (nc == 0 && !dp->lfn[ni]) break;     /* Name matched? */\r
+               }\r
+               return res;\r
+       }\r
+#endif\r
+       /* At the FAT12/16/32 */\r
+#if _USE_LFN != 0\r
+       ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF;     /* Reset LFN sequence */\r
+#endif\r
+       do {\r
+               res = move_window(fs, dp->sect);\r
+               if (res != FR_OK) break;\r
+               c = dp->dir[DIR_Name];\r
+               if (c == 0) { res = FR_NO_FILE; break; }        /* Reached to end of table */\r
+#if _USE_LFN != 0      /* LFN configuration */\r
+               dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK;\r
+               if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) {       /* An entry without valid data */\r
+                       ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF;   /* Reset LFN sequence */\r
+               } else {\r
+                       if (a == AM_LFN) {                      /* An LFN entry is found */\r
+                               if (dp->lfn) {\r
+                                       if (c & LLEF) {         /* Is it start of LFN sequence? */\r
+                                               sum = dp->dir[LDIR_Chksum];\r
+                                               c &= ~LLEF; ord = c;    /* LFN start order */\r
+                                               dp->blk_ofs = dp->dptr; /* Start offset of LFN */\r
+                                       }\r
+                                       /* Check validity of the LFN entry and compare it with given name */\r
+                                       ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(dp->lfn, dp->dir)) ? ord - 1 : 0xFF;\r
+                               }\r
+                       } else {                                        /* An SFN entry is found */\r
+                               if (!ord && sum == sum_sfn(dp->dir)) break;     /* LFN matched? */\r
+                               if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break;        /* SFN matched? */\r
+                               ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF;   /* Reset LFN sequence */\r
+                       }\r
+               }\r
+#else          /* Non LFN configuration */\r
+               dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK;\r
+               if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break;      /* Is it a valid entry? */\r
+#endif\r
+               res = dir_next(dp, 0);  /* Next entry */\r
+       } while (res == FR_OK);\r
+\r
+       return res;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Register an object to the directory                                   */\r
+/*-----------------------------------------------------------------------*/\r
+#if !_FS_READONLY\r
+static\r
+FRESULT dir_register ( /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */\r
+       DIR* dp                         /* Target directory with object name to be created */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs = dp->obj.fs;\r
+#if _USE_LFN != 0      /* LFN configuration */\r
+       UINT n, nlen, nent;\r
+       BYTE sn[12], *fn, sum;\r
+       WCHAR *lfn;\r
+\r
+\r
+       fn = dp->fn; lfn = dp->lfn;\r
+       if (fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME;  /* Check name validity */\r
+       for (nlen = 0; lfn[nlen]; nlen++) ;     /* Get lfn length */\r
+\r
+#if _FS_EXFAT\r
+       if (fs->fs_type == FS_EXFAT) {  /* At the exFAT */\r
+               DIR dj;\r
+\r
+               nent = (nlen + 14) / 15 + 2;    /* Number of entries to allocate (85+C0+C1s) */\r
+               res = dir_alloc(dp, nent);              /* Allocate entries */\r
+               if (res != FR_OK) return res;\r
+               dp->blk_ofs = dp->dptr - SZDIRE * (nent - 1);                   /* Set block position */\r
+\r
+               if (dp->obj.stat & 4) {                 /* Has the sub-directory been stretched? */\r
+                       dp->obj.stat &= 3;\r
+                       dp->obj.objsize += (DWORD)fs->csize * SS(fs);   /* Increase object size by cluster size */\r
+                       res = fill_fat_chain(&dp->obj); /* Complement FAT chain if needed */\r
+                       if (res != FR_OK) return res;\r
+                       res = load_obj_dir(&dj, &dp->obj);\r
+                       if (res != FR_OK) return res;   /* Load the object status */\r
+                       st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize);          /* Update the allocation status */\r
+                       st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize);\r
+                       fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1;\r
+                       res = store_xdir(&dj);                  /* Store the object status */\r
+                       if (res != FR_OK) return res;\r
+               }\r
+\r
+               create_xdir(fs->dirbuf, lfn);   /* Create on-memory directory block to be written later */\r
+               return FR_OK;\r
+       }\r
+#endif\r
+       /* At the FAT12/16/32 */\r
+       mem_cpy(sn, fn, 12);\r
+       if (sn[NSFLAG] & NS_LOSS) {                     /* When LFN is out of 8.3 format, generate a numbered name */\r
+               fn[NSFLAG] = 0; dp->lfn = 0;            /* 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(dp);                             /* 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[NSFLAG] = sn[NSFLAG]; dp->lfn = lfn;\r
+       }\r
+\r
+       /* Create an SFN with/without LFNs. */\r
+       nent = (sn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1;        /* Number of entries to allocate */\r
+       res = dir_alloc(dp, nent);              /* Allocate entries */\r
+       if (res == FR_OK && --nent) {   /* Set LFN entry if needed */\r
+               res = dir_sdi(dp, dp->dptr - nent * SZDIRE);\r
+               if (res == FR_OK) {\r
+                       sum = sum_sfn(dp->fn);  /* Checksum value of the SFN tied to the LFN */\r
+                       do {                                    /* Store LFN entries in bottom first */\r
+                               res = move_window(fs, dp->sect);\r
+                               if (res != FR_OK) break;\r
+                               put_lfn(dp->lfn, dp->dir, (BYTE)nent, sum);\r
+                               fs->wflag = 1;\r
+                               res = dir_next(dp, 0);  /* Next entry */\r
+                       } while (res == FR_OK && --nent);\r
+               }\r
+       }\r
+\r
+#else  /* Non LFN configuration */\r
+       res = dir_alloc(dp, 1);         /* Allocate an entry for SFN */\r
+\r
+#endif\r
+\r
+       /* Set SFN entry */\r
+       if (res == FR_OK) {\r
+               res = move_window(fs, dp->sect);\r
+               if (res == FR_OK) {\r
+                       mem_set(dp->dir, 0, SZDIRE);    /* Clean the entry */\r
+                       mem_cpy(dp->dir + DIR_Name, dp->fn, 11);        /* Put SFN */\r
+#if _USE_LFN != 0\r
+                       dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT);       /* Put NT flag */\r
+#endif\r
+                       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:Succeeded, FR_DISK_ERR:A disk error */\r
+       DIR* dp                         /* Directory object pointing the entry to be removed */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs = dp->obj.fs;\r
+#if _USE_LFN != 0      /* LFN configuration */\r
+       DWORD last = dp->dptr;\r
+\r
+       res = dp->blk_ofs == 0xFFFFFFFF ? FR_OK : dir_sdi(dp, dp->blk_ofs);     /* Goto top of the entry block if LFN is exist */\r
+       if (res == FR_OK) {\r
+               do {\r
+                       res = move_window(fs, dp->sect);\r
+                       if (res != FR_OK) break;\r
+                       /* Mark an entry 'deleted' */\r
+                       if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {     /* At the exFAT */\r
+                               dp->dir[XDIR_Type] &= 0x7F;\r
+                       } else {                                                                        /* At the FAT12/16/32 */\r
+                               dp->dir[DIR_Name] = DDEM;\r
+                       }\r
+                       fs->wflag = 1;\r
+                       if (dp->dptr >= last) break;    /* If reached last entry then all entries of the object has been deleted. */\r
+                       res = dir_next(dp, 0);  /* Next entry */\r
+               } while (res == FR_OK);\r
+               if (res == FR_NO_FILE) res = FR_INT_ERR;\r
+       }\r
+#else                  /* Non LFN configuration */\r
+\r
+       res = move_window(fs, dp->sect);\r
+       if (res == FR_OK) {\r
+               dp->dir[DIR_Name] = DDEM;\r
+               fs->wflag = 1;\r
+       }\r
+#endif\r
+\r
+       return res;\r
+}\r
+#endif /* !_FS_READONLY */\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Get file information from directory entry                             */\r
+/*-----------------------------------------------------------------------*/\r
+#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2\r
+static\r
+void get_fileinfo (            /* No return code */\r
+       DIR* dp,                        /* Pointer to the directory object */\r
+       FILINFO* fno            /* Pointer to the file information to be filled */\r
+)\r
+{\r
+       UINT i, j;\r
+       TCHAR c;\r
+#if _USE_LFN != 0\r
+       WCHAR w, *lfn;\r
+       WCHAR lfv;\r
+#endif\r
+\r
+\r
+       fno->fname[0] = 0;              /* Invaidate file info */\r
+       if (!dp->sect) return;  /* Exit if read pointer has reached end of directory */\r
+\r
+#if _USE_LFN != 0      /* LFN configuration */\r
+#if _FS_EXFAT\r
+       if (dp->obj.fs->fs_type == FS_EXFAT) {  /* At the exFAT */\r
+               get_xdir_info(dp->obj.fs->dirbuf, fno);\r
+               return;\r
+       } else\r
+#endif\r
+       {       /* At the FAT12/16/32 */\r
+               if (dp->blk_ofs != 0xFFFFFFFF) {        /* Get LFN if available */\r
+                       i = 0; lfn = dp->lfn;\r
+                       while ((w = *lfn++) != 0) {             /* Get an LFN character */\r
+#if !_LFN_UNICODE\r
+                               w = ff_convert(w, 0);           /* Unicode -> OEM */\r
+                               if (w == 0) { i = 0; break; }   /* No LFN if it could not be converted */\r
+                               if (_DF1S && w >= 0x100) {      /* Put 1st byte if it is a DBC (always false at SBCS cfg) */\r
+                                       fno->fname[i++] = (char)(w >> 8);\r
+                               }\r
+#endif\r
+                               if (i >= _MAX_LFN) { i = 0; break; }    /* No LFN if buffer overflow */\r
+                               fno->fname[i++] = (char)w;\r
+                       }\r
+                       fno->fname[i] = 0;      /* Terminate the LFN */\r
+               }\r
+       }\r
+\r
+       i = j = 0;\r
+       lfv = fno->fname[i];    /* LFN is exist if non-zero */\r
+       while (i < 11) {                /* Copy name body and extension */\r
+               c = (TCHAR)dp->dir[i++];\r
+               if (c == ' ') continue;                         /* Skip padding spaces */\r
+               if (c == RDDEM) c = (TCHAR)DDEM;        /* Restore replaced DDEM character */\r
+               if (i == 9) {                                           /* Insert a . if extension is exist */\r
+                       if (!lfv) fno->fname[j] = '.';\r
+                       fno->altname[j++] = '.';\r
+               }\r
+#if _LFN_UNICODE\r
+               if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dp->dir[i])) {\r
+                       c = c << 8 | dp->dir[i++];\r
+               }\r
+               c = ff_convert(c, 1);   /* OEM -> Unicode */\r
+               if (!c) c = '?';\r
+#endif\r
+               fno->altname[j] = c;\r
+               if (!lfv) {\r
+                       if (IsUpper(c) && (dp->dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY))) {\r
+                               c += 0x20;                      /* To lower */\r
+                       }\r
+                       fno->fname[j] = c;\r
+               }\r
+               j++;\r
+       }\r
+       if (!lfv) {\r
+               fno->fname[j] = 0;\r
+               if (!dp->dir[DIR_NTres]) j = 0; /* Altname is no longer needed if neither LFN nor case info is exist. */\r
+       }\r
+       fno->altname[j] = 0;    /* Terminate the SFN */\r
+\r
+#else  /* Non-LFN configuration */\r
+       i = j = 0;\r
+       while (i < 11) {                /* Copy name body and extension */\r
+               c = (TCHAR)dp->dir[i++];\r
+               if (c == ' ') continue;                         /* Skip padding spaces */\r
+               if (c == RDDEM) c = (TCHAR)DDEM;        /* Restore replaced DDEM character */\r
+               if (i == 9) fno->fname[j++] = '.';      /* Insert a . if extension is exist */\r
+               fno->fname[j++] = c;\r
+       }\r
+       fno->fname[j] = 0;\r
+#endif\r
+\r
+       fno->fattrib = dp->dir[DIR_Attr];                               /* Attribute */\r
+       fno->fsize = ld_dword(dp->dir + DIR_FileSize);  /* Size */\r
+       fno->fdate = ld_word(dp->dir + DIR_WrtDate);    /* Date */\r
+       fno->ftime = ld_word(dp->dir + DIR_WrtTime);    /* Time */\r
+}\r
+#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Pattern matching                                                      */\r
+/*-----------------------------------------------------------------------*/\r
+#if _USE_FIND && _FS_MINIMIZE <= 1\r
+static\r
+WCHAR get_achar (              /* Get a character and advances ptr 1 or 2 */\r
+       const TCHAR** ptr       /* Pointer to pointer to the SBCS/DBCS/Unicode string */\r
+)\r
+{\r
+#if !_LFN_UNICODE\r
+       WCHAR chr;\r
+\r
+       chr = (BYTE)*(*ptr)++;                                  /* Get a byte */\r
+       if (IsLower(chr)) chr -= 0x20;                  /* To upper ASCII char */\r
+#ifdef _EXCVT\r
+       if (chr >= 0x80) chr = ExCvt[chr - 0x80];       /* To upper SBCS extended char */\r
+#else\r
+       if (IsDBCS1(chr) && IsDBCS2(**ptr)) {           /* Get DBC 2nd byte if needed */\r
+               chr = chr << 8 | (BYTE)*(*ptr)++;\r
+       }\r
+#endif\r
+       return chr;\r
+#else\r
+       return ff_wtoupper(*(*ptr)++);                  /* Get a word and to upper */\r
+#endif\r
+}\r
+\r
+\r
+static\r
+int pattern_matching ( /* 0:not matched, 1:matched */\r
+       const TCHAR* pat,       /* Matching pattern */\r
+       const TCHAR* nam,       /* String to be tested */\r
+       int skip,                       /* Number of pre-skip chars (number of ?s) */\r
+       int inf                         /* Infinite search (* specified) */\r
+)\r
+{\r
+       const TCHAR *pp, *np;\r
+       WCHAR pc, nc;\r
+       int nm, nx;\r
+\r
+\r
+       while (skip--) {                                /* Pre-skip name chars */\r
+               if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */\r
+       }\r
+       if (!*pat && inf) return 1;             /* (short circuit) */\r
+\r
+       do {\r
+               pp = pat; np = nam;                     /* Top of pattern and name to match */\r
+               for (;;) {\r
+                       if (*pp == '?' || *pp == '*') { /* Wildcard? */\r
+                               nm = nx = 0;\r
+                               do {                            /* Analyze the wildcard chars */\r
+                                       if (*pp++ == '?') nm++; else nx = 1;\r
+                               } while (*pp == '?' || *pp == '*');\r
+                               if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recursions upto number of wildcard blocks in the pattern) */\r
+                               nc = *np; break;        /* Branch mismatched */\r
+                       }\r
+                       pc = get_achar(&pp);    /* Get a pattern char */\r
+                       nc = get_achar(&np);    /* Get a name char */\r
+                       if (pc != nc) break;    /* Branch mismatched? */\r
+                       if (pc == 0) return 1;  /* Branch matched? (matched at end of both strings) */\r
+               }\r
+               get_achar(&nam);                        /* nam++ */\r
+       } while (inf && nc);                    /* Retry until end of name if infinite search is specified */\r
+\r
+       return 0;\r
+}\r
+#endif /* _USE_FIND && _FS_MINIMIZE <= 1 */\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Pick a top segment and create the object name in directory form       */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+FRESULT create_name (  /* FR_OK: successful, FR_INVALID_NAME: could not create */\r
+       DIR* dp,                        /* Pointer to the directory object */\r
+       const TCHAR** path      /* Pointer to pointer to the segment in the path string */\r
+)\r
+{\r
+#if _USE_LFN != 0      /* LFN configuration */\r
+       BYTE b, cf;\r
+       WCHAR w, *lfn;\r
+       UINT i, ni, si, di;\r
+       const TCHAR *p;\r
+\r
+       /* Create LFN in Unicode */\r
+       p = *path; lfn = dp->lfn; si = di = 0;\r
+       for (;;) {\r
+               w = p[si++];                                    /* Get a character */\r
+               if (w < ' ' || w == '/' || w == '\\') {         /* Break on end of segment */\r
+                       while (p[si] == '/' || p[si] == '\\') si++;     /* Skip duplicated separator */\r
+                       break;\r
+               }\r
+               if (di >= _MAX_LFN) return FR_INVALID_NAME;     /* Reject too long name */\r
+#if !_LFN_UNICODE\r
+               w &= 0xFF;\r
+               if (IsDBCS1(w)) {                               /* Check if it is a DBC 1st byte (always false on SBCS cfg) */\r
+                       b = (BYTE)p[si++];                      /* Get 2nd byte */\r
+                       w = (w << 8) + b;                       /* Create a DBC */\r
+                       if (!IsDBCS2(b)) return FR_INVALID_NAME;        /* Reject invalid sequence */\r
+               }\r
+               w = ff_convert(w, 1);                   /* Convert ANSI/OEM to Unicode */\r
+               if (!w) return FR_INVALID_NAME; /* Reject invalid code */\r
+#endif\r
+               if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) return FR_INVALID_NAME;    /* Reject illegal characters for LFN */\r
+               lfn[di++] = w;                                  /* Store the Unicode character */\r
+       }\r
+       *path = &p[si];                                         /* Return pointer to the next segment */\r
+       cf = (w < ' ') ? NS_LAST : 0;           /* Set last segment flag if end of path */\r
+#if _FS_RPATH != 0\r
+       if ((di == 1 && lfn[di - 1] == '.') ||\r
+               (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {        /* Is this segment a dot name? */\r
+               lfn[di] = 0;\r
+               for (i = 0; i < 11; i++)                /* Create dot name for SFN entry */\r
+                       dp->fn[i] = (i < di) ? '.' : ' ';\r
+               dp->fn[i] = cf | NS_DOT;                /* This is a dot entry */\r
+               return FR_OK;\r
+       }\r
+#endif\r
+       while (di) {                                            /* Snip off trailing spaces and dots if exist */\r
+               w = lfn[di - 1];\r
+               if (w != ' ' && w != '.') break;\r
+               di--;\r
+       }\r
+       lfn[di] = 0;                                            /* LFN is created */\r
+       if (di == 0) return FR_INVALID_NAME;    /* Reject nul name */\r
+\r
+       /* Create SFN in directory form */\r
+       mem_set(dp->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 character */\r
+               if (!w) break;                                  /* Break on end 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 character */\r
+#ifdef _EXCVT\r
+                       w = ff_convert(w, 0);           /* Unicode -> OEM code */\r
+                       if (w) w = ExCvt[w - 0x80];     /* Convert extended character 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) {              /* Is this DBC? (always false at SBCS cfg) */\r
+                       if (i >= ni - 1) {\r
+                               cf |= NS_LOSS | NS_LFN; i = ni; continue;\r
+                       }\r
+                       dp->fn[i++] = (BYTE)(w >> 8);\r
+               } else {                                                /* SBC */\r
+                       if (!w || chk_chr("+,;=[]", w)) {       /* Replace illegal characters 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
+               dp->fn[i++] = (BYTE)w;\r
+       }\r
+\r
+       if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM;       /* If the first character collides with DDEM, replace it with RDDEM */\r
+\r
+       if (ni == 8) b <<= 2;\r
+       if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN;     /* Create LFN entry when there are composite capitals */\r
+       if (!(cf & NS_LFN)) {                                           /* When LFN is in 8.3 format without extended character, 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
+       dp->fn[NSFLAG] = cf;    /* SFN is created */\r
+\r
+       return FR_OK;\r
+\r
+\r
+#else  /* Non-LFN configuration */\r
+       BYTE b, c, d, *sfn;\r
+       UINT ni, si, i;\r
+       const char *p;\r
+\r
+       /* Create file name in directory form */\r
+       p = *path; sfn = dp->fn;\r
+       mem_set(sfn, ' ', 11);\r
+       si = i = b = 0; ni = 8;\r
+#if _FS_RPATH != 0\r
+       if (p[si] == '.') { /* Is this a dot entry? */\r
+               for (;;) {\r
+                       c = (BYTE)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];                                                                 /* Return pointer to the next segment */\r
+               sfn[NSFLAG] = (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 = (BYTE)p[si++];\r
+               if (c <= ' ' || c == '/' || c == '\\') {        /* Break on end of segment */\r
+                       while (p[si] == '/' || p[si] == '\\') si++;     /* Skip duplicated separator */\r
+                       break;\r
+               }\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 character? */\r
+                       b |= 3;                                         /* Eliminate NT flag */\r
+#ifdef _EXCVT\r
+                       c = ExCvt[c - 0x80];            /* To upper extended characters (SBCS cfg) */\r
+#else\r
+#if !_DF1S\r
+                       return FR_INVALID_NAME;         /* Reject extended characters (ASCII cfg) */\r
+#endif\r
+#endif\r
+               }\r
+               if (IsDBCS1(c)) {                               /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */\r
+                       d = (BYTE)p[si++];                      /* Get 2nd byte */\r
+                       if (!IsDBCS2(d) || i >= ni - 1) return FR_INVALID_NAME; /* Reject invalid DBC */\r
+                       sfn[i++] = c;\r
+                       sfn[i++] = d;\r
+               } else {                                                /* SBC */\r
+                       if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) return FR_INVALID_NAME;  /* Reject illegal chrs for SFN */\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];                                         /* Return pointer to the next segment */\r
+       c = (c <= ' ') ? NS_LAST : 0;           /* Set last segment flag if end of path */\r
+\r
+       if (i == 0) return FR_INVALID_NAME;     /* Reject nul string */\r
+       if (sfn[0] == DDEM) sfn[0] = RDDEM;     /* When first character collides with DDEM, replace it with RDDEM */\r
+\r
+       if (ni == 8) b <<= 2;\r
+       if ((b & 0x03) == 0x01) c |= NS_EXT;    /* NT flag (Name extension has only small capital) */\r
+       if ((b & 0x0C) == 0x04) c |= NS_BODY;   /* NT flag (Name body has only small capital) */\r
+\r
+       sfn[NSFLAG] = c;                /* Store NT flag, File name is created */\r
+\r
+       return FR_OK;\r
+#endif\r
+}\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* dp,                        /* Directory object to return last directory and found object */\r
+       const TCHAR* path       /* Full-path string to find a file or directory */\r
+)\r
+{\r
+       FRESULT res;\r
+       BYTE ns;\r
+       _FDID *obj = &dp->obj;\r
+       FATFS *fs = obj->fs;\r
+\r
+\r
+#if _FS_RPATH != 0\r
+       if (*path != '/' && *path != '\\') {    /* Without heading separator */\r
+               obj->sclust = fs->cdir;                         /* Start from the current directory */\r
+       } else\r
+#endif\r
+       {                                                                               /* With heading separator */\r
+               while (*path == '/' || *path == '\\') path++;   /* Strip heading separator */\r
+               obj->sclust = 0;                                        /* Start from the root directory */\r
+       }\r
+#if _FS_EXFAT && _FS_RPATH != 0\r
+       if (fs->fs_type == FS_EXFAT && obj->sclust) {   /* Retrieve the sub-directory status if needed */\r
+               DIR dj;\r
+\r
+               obj->c_scl = fs->cdc_scl;\r
+               obj->c_size = fs->cdc_size;\r
+               obj->c_ofs = fs->cdc_ofs;\r
+               res = load_obj_dir(&dj, obj);\r
+               if (res != FR_OK) return res;\r
+               obj->objsize = ld_dword(fs->dirbuf + XDIR_FileSize);\r
+               obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;\r
+       }\r
+#endif\r
+\r
+       if ((UINT)*path < ' ') {                                /* Null path name is the origin directory itself */\r
+               dp->fn[NSFLAG] = NS_NONAME;\r
+               res = dir_sdi(dp, 0);\r
+\r
+       } else {                                                                /* Follow path */\r
+               for (;;) {\r
+                       res = create_name(dp, &path);   /* Get a segment name of the path */\r
+                       if (res != FR_OK) break;\r
+                       res = dir_find(dp);                             /* Find an object with the segment name */\r
+                       ns = dp->fn[NSFLAG];\r
+                       if (res != FR_OK) {                             /* Failed to find the object */\r
+                               if (res == FR_NO_FILE) {        /* Object is not found */\r
+                                       if (_FS_RPATH && (ns & NS_DOT)) {       /* If dot entry is not exist, stay there */\r
+                                               if (!(ns & NS_LAST)) continue;  /* Continue to follow if not last segment */\r
+                                               dp->fn[NSFLAG] = NS_NONAME;\r
+                                               res = FR_OK;\r
+                                       } else {                                                        /* Could not find the object */\r
+                                               if (!(ns & NS_LAST)) res = FR_NO_PATH;  /* Adjust error code if not last segment */\r
+                                       }\r
+                               }\r
+                               break;\r
+                       }\r
+                       if (ns & NS_LAST) break;                        /* Last segment matched. Function completed. */\r
+                       /* Get into the sub-directory */\r
+                       if (!(obj->attr & AM_DIR)) {            /* It is not a sub-directory and cannot follow */\r
+                               res = FR_NO_PATH; break;\r
+                       }\r
+#if _FS_EXFAT\r
+                       if (fs->fs_type == FS_EXFAT) {\r
+                               obj->c_scl = obj->sclust;               /* Save containing directory information for next dir */\r
+                               obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;\r
+                               obj->c_ofs = dp->blk_ofs;\r
+                               obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus);      /* Open next directory */\r
+                               obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;\r
+                               obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r
+                       } else\r
+#endif\r
+                       {\r
+                               obj->sclust = ld_clust(fs, &fs->win[dp->dptr % SS(fs)]);        /* Open next directory */\r
+                       }\r
+               }\r
+       }\r
+\r
+       return res;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Get logical drive number from path name                               */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+int get_ldnumber (             /* Returns logical drive number (-1:invalid drive) */\r
+       const TCHAR** path      /* Pointer to pointer to the path name */\r
+)\r
+{\r
+       const TCHAR *tp, *tt;\r
+       UINT i;\r
+       int vol = -1;\r
+#if _STR_VOLUME_ID             /* Find string drive id */\r
+       static const char* const str[] = {_VOLUME_STRS};\r
+       const char *sp;\r
+       char c;\r
+       TCHAR tc;\r
+#endif\r
+\r
+\r
+       if (*path) {    /* If the pointer is not a null */\r
+               for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ;     /* Find ':' in the path */\r
+               if (*tt == ':') {       /* If a ':' is exist in the path name */\r
+                       tp = *path;\r
+                       i = *tp++ - '0'; \r
+                       if (i < 10 && tp == tt) {       /* Is there a numeric drive id? */\r
+                               if (i < _VOLUMES) {     /* If a drive id is found, get the value and strip it */\r
+                                       vol = (int)i;\r
+                                       *path = ++tt;\r
+                               }\r
+                       }\r
+#if _STR_VOLUME_ID\r
+                        else { /* No numeric drive number, find string drive id */\r
+                               i = 0; tt++;\r
+                               do {\r
+                                       sp = str[i]; tp = *path;\r
+                                       do {    /* Compare a string drive id with path name */\r
+                                               c = *sp++; tc = *tp++;\r
+                                               if (IsLower(tc)) tc -= 0x20;\r
+                                       } while (c && (TCHAR)c == tc);\r
+                               } while ((c || tp != tt) && ++i < _VOLUMES);    /* Repeat for each id until pattern match */\r
+                               if (i < _VOLUMES) {     /* If a drive id is found, get the value and strip it */\r
+                                       vol = (int)i;\r
+                                       *path = tt;\r
+                               }\r
+                       }\r
+#endif\r
+                       return vol;\r
+               }\r
+#if _FS_RPATH != 0 && _VOLUMES >= 2\r
+               vol = CurrVol;  /* Current drive */\r
+#else\r
+               vol = 0;                /* Drive 0 */\r
+#endif\r
+       }\r
+       return vol;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Load a sector and check if it is an FAT boot sector                   */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+BYTE check_fs (        /* 0:FAT, 1:exFAT, 2:Valid BS but not FAT, 3:Not a BS, 4:Disk 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
+       fs->wflag = 0; fs->winsect = 0xFFFFFFFF;                /* Invaidate window */\r
+       if (move_window(fs, sect) != FR_OK) return 4;   /* Load boot record */\r
+\r
+       if (ld_word(&fs->win[BS_55AA]) != 0xAA55) return 3;     /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */\r
+\r
+       if ((ld_dword(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) return 0;       /* Check "FAT" string */\r
+       if ((ld_dword(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) return 0;     /* Check "FAT" string */\r
+#if _FS_EXFAT\r
+       if (!mem_cmp(&fs->win[BS_OEMName], "EXFAT   ", 8)) return 1;\r
+#endif\r
+       return 2;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Find logical drive and check if the volume is mounted                 */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+FRESULT find_volume (  /* FR_OK(0): successful, !=0: any error occurred */\r
+       const TCHAR** path,     /* Pointer to pointer to the path name (drive number) */\r
+       FATFS** rfs,            /* Pointer to pointer to the found file system object */\r
+       BYTE mode                       /* !=0: Check write protection for write access */\r
+)\r
+{\r
+       BYTE fmt, *pt;\r
+       int vol;\r
+       DSTATUS stat;\r
+       DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];\r
+       WORD nrsv;\r
+       FATFS *fs;\r
+       UINT i;\r
+\r
+\r
+       /* Get logical drive number from the path name */\r
+       *rfs = 0;\r
+       vol = get_ldnumber(path);\r
+       if (vol < 0) return FR_INVALID_DRIVE;\r
+\r
+       /* Check if the file system object is valid or not */\r
+       fs = FatFs[vol];                                        /* Get pointer to the file system object */\r
+       if (!fs) return FR_NOT_ENABLED;         /* Is the file system object available? */\r
+\r
+       ENTER_FF(fs);                                           /* Lock the volume */\r
+       *rfs = fs;                                                      /* Return pointer to the file system object */\r
+\r
+       mode &= ~FA_READ;                                       /* Desired access mode, write access or not */\r
+       if (fs->fs_type) {                                      /* If the volume has been mounted */\r
+               stat = disk_status(fs->drv);\r
+               if (!(stat & STA_NOINIT)) {             /* and the physical drive is kept initialized */\r
+                       if (!_FS_READONLY && mode && (stat & STA_PROTECT)) {    /* Check write protection if needed */\r
+                               return FR_WRITE_PROTECTED;\r
+                       }\r
+                       return FR_OK;                           /* The file system object is valid */\r
+               }\r
+       }\r
+\r
+       /* The file system object is not valid. */\r
+       /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */\r
+\r
+       fs->fs_type = 0;                                        /* Clear the file system object */\r
+       fs->drv = LD2PD(vol);                           /* Bind the logical drive and a physical drive */\r
+       stat = disk_initialize(fs->drv);        /* Initialize the physical drive */\r
+       if (stat & STA_NOINIT) {                        /* Check if the initialization succeeded */\r
+               return FR_NOT_READY;                    /* Failed to initialize due to no medium or hard error */\r
+       }\r
+       if (!_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check disk write protection if needed */\r
+               return FR_WRITE_PROTECTED;\r
+       }\r
+#if _MAX_SS != _MIN_SS                                         /* Get sector size (multiple sector size cfg only) */\r
+       if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK\r
+               || SS(fs) < _MIN_SS || SS(fs) > _MAX_SS) return FR_DISK_ERR;\r
+#endif\r
+       /* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */\r
+       bsect = 0;\r
+       fmt = check_fs(fs, bsect);                      /* Load sector 0 and check if it is an FAT boot sector as SFD */\r
+       if (fmt == 2 || (fmt < 2 && LD2PT(vol))) {      /* Not an FAT boot sector or forced partition number */\r
+               for (i = 0; i < 4; i++) {                       /* Get partition offset */\r
+                       pt = fs->win + MBR_Table + i * SZ_PTE;\r
+                       br[i] = pt[4] ? ld_dword(&pt[8]) : 0;\r
+               }\r
+               i = LD2PT(vol);                                         /* Partition number: 0:auto, 1-4:forced */\r
+               if (i) i--;\r
+               do {                                                            /* Find an FAT volume */\r
+                       bsect = br[i];\r
+                       fmt = bsect ? check_fs(fs, bsect) : 3;  /* Check the partition */\r
+               } while (!LD2PT(vol) && fmt >= 2 && ++i < 4);\r
+       }\r
+       if (fmt == 4) return FR_DISK_ERR;               /* An error occured in the disk I/O layer */\r
+       if (fmt >= 2) return FR_NO_FILESYSTEM;  /* No FAT volume is found */\r
+\r
+       /* An FAT volume is found. Following code initializes the file system object */\r
+\r
+#if _FS_EXFAT\r
+       if (fmt == 1) {\r
+               QWORD maxlba;\r
+\r
+               for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && !fs->win[i]; i++) ;     /* Check zero filler */\r
+               if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM;\r
+\r
+               if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM;   /* Check exFAT revision (Must be 1.0) */\r
+\r
+               if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs))   /* (BPB_BytsPerSecEx must be equal to the physical sector size) */\r
+                       return FR_NO_FILESYSTEM;\r
+\r
+               maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect;      /* Number of sectors on the volume */\r
+               if (maxlba >= 0x100000000) return FR_NO_FILESYSTEM;     /* (It cannot be handled in 32-bit LBA) */\r
+\r
+               fs->fsize = ld_dword(fs->win + BPB_FatSzEx);    /* Number of sectors per FAT */\r
+\r
+               fs->n_fats = fs->win[BPB_NumFATsEx];                    /* Number of FATs */\r
+               if (fs->n_fats != 1) return FR_NO_FILESYSTEM;   /* (Must be 1) */\r
+\r
+               fs->csize = 1 << fs->win[BPB_SecPerClusEx];             /* Cluster size */\r
+               if (fs->csize == 0)     return FR_NO_FILESYSTEM;        /* (Must be 1..32768) */\r
+\r
+               nclst = ld_dword(fs->win + BPB_NumClusEx);              /* Number of clusters */\r
+               fs->n_fatent = nclst + 2;\r
+               if (fs->n_fatent >= 0x80000000) return FR_NO_FILESYSTEM;        /* (Must be <= 0x7FFFFFFF) */\r
+\r
+               /* Boundaries and Limits */\r
+               fs->volbase = bsect;\r
+               fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx);\r
+               fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx);\r
+               if (maxlba < fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM; /* (Volume size must not be smaller than the size requiered) */\r
+               fs->dirbase = ld_dword(fs->win + BPB_RootClusEx);\r
+\r
+               /* Check if bitmap location is in assumption (at the first cluster) */\r
+               if (move_window(fs, clust2sect(fs, fs->dirbase)) != FR_OK) return FR_DISK_ERR;\r
+               for (i = 0; i < SS(fs); i += SZDIRE) {\r
+                       if (fs->win[i] == 0x81 && ld_dword(fs->win + i + 20) == 2) break;       /* 81 entry with cluster #2? */\r
+               }\r
+               if (i == SS(fs)) return FR_NO_FILESYSTEM;\r
+#if !_FS_READONLY\r
+               fs->last_clst = fs->free_clst = 0xFFFFFFFF;             /* Initialize cluster allocation information */\r
+#endif\r
+#if _USE_LFN == 1\r
+               fs->dirbuf = DirBuf;    /* Static directory block working buuffer */\r
+#endif\r
+               fmt = FS_EXFAT;                 /* FAT sub-type */\r
+       } else\r
+#endif\r
+       {\r
+               if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM;       /* (BPB_BytsPerSec must be equal to the physical sector size) */\r
+\r
+               fasize = ld_word(fs->win + BPB_FATSz16);                        /* Number of sectors per FAT */\r
+               if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32);\r
+               fs->fsize = fasize;\r
+\r
+               fs->n_fats = fs->win[BPB_NumFATs];                                      /* Number of FATs */\r
+               if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM;        /* (Must be 1 or 2) */\r
+               fasize *= fs->n_fats;                                                           /* Number of sectors for FAT area */\r
+\r
+               fs->csize = fs->win[BPB_SecPerClus];                            /* Cluster size */\r
+               if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM;   /* (Must be power of 2) */\r
+\r
+               fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt);      /* Number of root directory entries */\r
+               if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM; /* (Must be sector aligned) */\r
+\r
+               tsect = ld_word(fs->win + BPB_TotSec16);                        /* Number of sectors on the volume */\r
+               if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32);\r
+\r
+               nrsv = ld_word(fs->win + BPB_RsvdSecCnt);                       /* Number of reserved sectors */\r
+               if (nrsv == 0) return FR_NO_FILESYSTEM;                         /* (Must not be 0) */\r
+\r
+               /* Determine the FAT sub type */\r
+               sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE);     /* RSV + FAT + DIR */\r
+               if (tsect < sysect) return FR_NO_FILESYSTEM;            /* (Invalid volume size) */\r
+               nclst = (tsect - sysect) / fs->csize;                           /* Number of clusters */\r
+               if (nclst == 0) return FR_NO_FILESYSTEM;                        /* (Invalid volume size) */\r
+               fmt = FS_FAT12;\r
+               if (nclst >= MIN_FAT16) fmt = FS_FAT16;\r
+               if (nclst >= MIN_FAT32) fmt = FS_FAT32;\r
+\r
+               /* Boundaries and Limits */\r
+               fs->n_fatent = nclst + 2;                                                       /* Number of FAT entries */\r
+               fs->volbase = bsect;                                                            /* Volume start sector */\r
+               fs->fatbase = bsect + nrsv;                                             /* FAT start sector */\r
+               fs->database = bsect + sysect;                                          /* Data start sector */\r
+               if (fmt == FS_FAT32) {\r
+                       if (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM;       /* (Must be FAT32 revision 0.0) */\r
+                       if (fs->n_rootdir) return FR_NO_FILESYSTEM;             /* (BPB_RootEntCnt must be 0) */\r
+                       fs->dirbase = ld_dword(fs->win + BPB_RootClus32);       /* Root directory start cluster */\r
+                       szbfat = fs->n_fatent * 4;                                              /* (Needed FAT size) */\r
+               } else {\r
+                       if (fs->n_rootdir == 0) return FR_NO_FILESYSTEM;/* (BPB_RootEntCnt must not be 0) */\r
+                       fs->dirbase = fs->fatbase + fasize;                             /* Root directory start sector */\r
+                       szbfat = (fmt == FS_FAT16) ?                                    /* (Needed FAT size) */\r
+                               fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);\r
+               }\r
+               if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) return FR_NO_FILESYSTEM;      /* (BPB_FATSz must not be less than the size needed) */\r
+\r
+#if !_FS_READONLY\r
+               /* Initialize cluster allocation information */\r
+               fs->last_clst = fs->free_clst = 0xFFFFFFFF;\r
+\r
+               /* Get FSINFO if available */\r
+               fs->fsi_flag = 0x80;\r
+#if (_FS_NOFSINFO & 3) != 3\r
+               if (fmt == FS_FAT32                             /* Enable FSINFO only if FAT32 and BPB_FSInfo32 == 1 */\r
+                       && ld_word(fs->win + BPB_FSInfo32) == 1\r
+                       && move_window(fs, bsect + 1) == FR_OK)\r
+               {\r
+                       fs->fsi_flag = 0;\r
+                       if (ld_word(fs->win + BS_55AA) == 0xAA55        /* Load FSINFO data if available */\r
+                               && ld_dword(fs->win + FSI_LeadSig) == 0x41615252\r
+                               && ld_dword(fs->win + FSI_StrucSig) == 0x61417272)\r
+                       {\r
+#if (_FS_NOFSINFO & 1) == 0\r
+                               fs->free_clst = ld_dword(fs->win + FSI_Free_Count);\r
+#endif\r
+#if (_FS_NOFSINFO & 2) == 0\r
+                               fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);\r
+#endif\r
+                       }\r
+               }\r
+#endif\r
+#endif\r
+       }\r
+\r
+       fs->fs_type = fmt;      /* FAT sub-type */\r
+       fs->id = ++Fsid;        /* File system mount ID */\r
+#if _FS_RPATH != 0\r
+       fs->cdir = 0;           /* Initialize current directory */\r
+#endif\r
+#if _FS_LOCK != 0              /* Clear file lock semaphores */\r
+       clear_lock(fs);\r
+#endif\r
+       return FR_OK;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Check if the file/directory object is valid or not                    */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+static\r
+FRESULT validate (     /* Returns FR_OK or FR_INVALID_OBJECT */\r
+       void* dfp,              /* Pointer to the FIL/DIR object to check validity */\r
+       FATFS** fs              /* Pointer to pointer to the owner file system object to return */\r
+)\r
+{\r
+       _FDID *obj = (_FDID*)dfp;       /* Assuming .obj in the FIL/DIR is the first member */\r
+       FRESULT res;\r
+\r
+\r
+       if (!dfp || !obj->fs || !obj->fs->fs_type || obj->fs->id != obj->id || (disk_status(obj->fs->drv) & STA_NOINIT)) {\r
+               *fs = 0;                                /* The object is invalid */\r
+               res = FR_INVALID_OBJECT;\r
+       } else {\r
+               *fs = obj->fs;                  /* Owner file sytem object */\r
+               ENTER_FF(obj->fs);              /* Lock file system */\r
+               res = FR_OK;\r
+       }\r
+       return res;\r
+}\r
+\r
+\r
+\r
+\r
+/*---------------------------------------------------------------------------\r
+\r
+   Public Functions (FatFs API)\r
+\r
+----------------------------------------------------------------------------*/\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Mount/Unmount a Logical Drive                                         */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_mount (\r
+       FATFS* fs,                      /* Pointer to the file system object (NULL:unmount)*/\r
+       const TCHAR* path,      /* Logical drive number to be mounted/unmounted */\r
+       BYTE opt                        /* Mode option 0:Do not mount (delayed mount), 1:Mount immediately */\r
+)\r
+{\r
+       FATFS *cfs;\r
+       int vol;\r
+       FRESULT res;\r
+       const TCHAR *rp = path;\r
+\r
+\r
+       vol = get_ldnumber(&rp);\r
+       if (vol < 0) return FR_INVALID_DRIVE;\r
+       cfs = FatFs[vol];                                       /* Pointer to fs object */\r
+\r
+       if (cfs) {\r
+#if _FS_LOCK != 0\r
+               clear_lock(cfs);\r
+#endif\r
+#if _FS_REENTRANT                                              /* Discard sync object of the current volume */\r
+               if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;\r
+#endif\r
+               cfs->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((BYTE)vol, &fs->sobj)) return FR_INT_ERR;\r
+#endif\r
+       }\r
+       FatFs[vol] = fs;                                        /* Register new fs object */\r
+\r
+       if (!fs || opt != 1) return FR_OK;      /* Do not mount now, it will be mounted later */\r
+\r
+       res = find_volume(&path, &fs, 0);       /* Force mounted the volume */\r
+       LEAVE_FF(fs, res);\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 TCHAR* 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
+       FATFS *fs;\r
+#if !_FS_READONLY\r
+       DWORD dw, cl;\r
+#endif\r
+       DEF_NAMBUF;\r
+\r
+\r
+       if (!fp) return FR_INVALID_OBJECT;\r
+       fp->obj.fs = 0;         /* Clear file object */\r
+\r
+       /* Get logical drive number */\r
+       mode &= _FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;\r
+       res = find_volume(&path, &fs, mode);\r
+       if (res == FR_OK) {\r
+               dj.obj.fs = fs;\r
+               INIT_NAMBUF(dj);\r
+               res = follow_path(&dj, path);   /* Follow the file path */\r
+#if !_FS_READONLY      /* R/W configuration */\r
+               if (res == FR_OK) {\r
+                       if (dj.fn[NSFLAG] & NS_NONAME) {        /* Origin directory itself? */\r
+                               res = FR_INVALID_NAME;\r
+                       }\r
+#if _FS_LOCK != 0\r
+                       else {\r
+                               res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);\r
+                       }\r
+#endif\r
+               }\r
+               /* Create or Open a file */\r
+               if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {\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
+#if _FS_LOCK != 0\r
+                                       res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;\r
+#else\r
+                                       res = dir_register(&dj);\r
+#endif\r
+                               mode |= FA_CREATE_ALWAYS;               /* File is created */\r
+                       }\r
+                       else {                                                          /* Any object is already existing */\r
+                               if (dj.obj.attr & (AM_RDO | AM_DIR)) {  /* Cannot overwrite it (R/O or DIR) */\r
+                                       res = FR_DENIED;\r
+                               } else {\r
+                                       if (mode & FA_CREATE_NEW) res = FR_EXIST;       /* Cannot create as new file */\r
+                               }\r
+                       }\r
+                       if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) {        /* Truncate it if overwrite mode */\r
+                               dw = GET_FATTIME();\r
+#if _FS_EXFAT\r
+                               if (fs->fs_type == FS_EXFAT) {\r
+                                       /* Get current allocation info */\r
+                                       fp->obj.fs = fs;\r
+                                       fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus);\r
+                                       fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r
+                                       fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;\r
+                                       /* Initialize directory entry block */\r
+                                       st_dword(fs->dirbuf + XDIR_CrtTime, dw);        /* Set created time */\r
+                                       fs->dirbuf[XDIR_CrtTime10] = 0;\r
+                                       st_dword(fs->dirbuf + XDIR_ModTime, dw);        /* Set modified time */\r
+                                       fs->dirbuf[XDIR_ModTime10] = 0;\r
+                                       fs->dirbuf[XDIR_Attr] = AM_ARC;                         /* Reset attribute */\r
+                                       st_dword(fs->dirbuf + XDIR_FstClus, 0);         /* Reset file allocation info */\r
+                                       st_qword(fs->dirbuf + XDIR_FileSize, 0);\r
+                                       st_qword(fs->dirbuf + XDIR_ValidFileSize, 0);\r
+                                       fs->dirbuf[XDIR_GenFlags] = 1;\r
+                                       res = store_xdir(&dj);\r
+                                       if (res == FR_OK && fp->obj.sclust) {           /* Remove the cluster chain if exist */\r
+                                               res = remove_chain(&fp->obj, fp->obj.sclust, 0);\r
+                                               fs->last_clst = fp->obj.sclust - 1;             /* Reuse the cluster hole */\r
+                                       }\r
+                               } else\r
+#endif\r
+                               {\r
+                                       /* Clean directory info */\r
+                                       st_dword(dj.dir + DIR_CrtTime, dw);     /* Set created time */\r
+                                       st_dword(dj.dir + DIR_WrtTime, dw);     /* Set modified time */\r
+                                       dj.dir[DIR_Attr] = AM_ARC;                      /* Reset attribute */\r
+                                       cl = ld_clust(fs, dj.dir);                      /* Get cluster chain */\r
+                                       st_clust(fs, dj.dir, 0);                        /* Reset file allocation info */\r
+                                       st_dword(dj.dir + DIR_FileSize, 0);\r
+                                       fs->wflag = 1;\r
+\r
+                                       if (cl) {                                                       /* Remove the cluster chain if exist */\r
+                                               dw = fs->winsect;\r
+                                               res = remove_chain(&dj.obj, cl, 0);\r
+                                               if (res == FR_OK) {\r
+                                                       res = move_window(fs, dw);\r
+                                                       fs->last_clst = cl - 1;         /* Reuse the cluster hole */\r
+                                               }\r
+                                       }\r
+                               }\r
+                       }\r
+               }\r
+               else {  /* Open an existing file */\r
+                       if (res == FR_OK) {                                     /* Following succeeded */\r
+                               if (dj.obj.attr & AM_DIR) {             /* It is a directory */\r
+                                       res = FR_NO_FILE;\r
+                               } else {\r
+                                       if ((mode & FA_WRITE) && (dj.obj.attr & AM_RDO)) { /* R/O violation */\r
+                                               res = FR_DENIED;\r
+                                       }\r
+                               }\r
+                       }\r
+               }\r
+               if (res == FR_OK) {\r
+                       if (mode & FA_CREATE_ALWAYS)            /* Set file change flag if created or overwritten */\r
+                               mode |= _FA_MODIFIED;\r
+                       fp->dir_sect = fs->winsect;                     /* Pointer to the directory entry */\r
+                       fp->dir_ptr = dj.dir;\r
+#if _FS_LOCK != 0\r
+                       fp->obj.lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);\r
+                       if (!fp->obj.lockid) res = FR_INT_ERR;\r
+#endif\r
+               }\r
+#else          /* R/O configuration */\r
+               if (res == FR_OK) {\r
+                       if (dj.fn[NSFLAG] & NS_NONAME) {        /* Origin directory itself? */\r
+                               res = FR_INVALID_NAME;\r
+                       } else {\r
+                               if (dj.obj.attr & AM_DIR) {             /* It is a directory */\r
+                                       res = FR_NO_FILE;\r
+                               }\r
+                       }\r
+               }\r
+#endif\r
+\r
+               if (res == FR_OK) {\r
+#if _FS_EXFAT\r
+                       if (fs->fs_type == FS_EXFAT) {\r
+                               fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus);           /* Get allocation info */\r
+                               fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r
+                               fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;\r
+                               fp->obj.c_scl = dj.obj.sclust;\r
+                               fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;\r
+                               fp->obj.c_ofs = dj.blk_ofs;\r
+                       } else\r
+#endif\r
+                       {\r
+                               fp->obj.sclust = ld_clust(fs, dj.dir);                          /* Get allocation info */\r
+                               fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);\r
+                       }\r
+#if _USE_FASTSEEK\r
+                       fp->cltbl = 0;                  /* Normal seek mode */\r
+#endif\r
+                       fp->err = 0;                    /* Clear error flag */\r
+                       fp->fptr = 0;                   /* Set file pointer */\r
+                       fp->sect = 0;                   /* Invalidate current data sector */\r
+                       fp->flag = mode;                /* File access mode */\r
+                       fp->obj.fs = fs;                /* Validate the file object */\r
+                       fp->obj.id = fs->id;\r
+               }\r
+\r
+               FREE_NAMBUF();\r
+       }\r
+\r
+       LEAVE_FF(dj.obj.fs, res);\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
+       FATFS *fs;\r
+       DWORD clst, sect;\r
+       FSIZE_t remain;\r
+       UINT rcnt, cc, csect;\r
+       BYTE *rbuff = (BYTE*)buff;\r
+\r
+\r
+       *br = 0;        /* Clear read byte counter */\r
+       res = validate(fp, &fs);\r
+       if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);       /* Check validity */\r
+       if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */\r
+       remain = fp->obj.objsize - fp->fptr;\r
+       if (btr > remain) btr = (UINT)remain;           /* Truncate btr by remaining bytes */\r
+\r
+       for ( ;  btr;                                                           /* Repeat until all data read */\r
+               rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {\r
+               if ((fp->fptr % SS(fs)) == 0) {                 /* On the sector boundary? */\r
+                       csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1));    /* Sector offset in the cluster */\r
+                       if (csect == 0) {                                       /* On the cluster boundary? */\r
+                               if (fp->fptr == 0) {                    /* On the top of the file? */\r
+                                       clst = fp->obj.sclust;          /* Follow cluster chain from the origin */\r
+                               } else {                                                /* Middle or end of the file */\r
+#if _USE_FASTSEEK\r
+                                       if (fp->cltbl) {\r
+                                               clst = clmt_clust(fp, fp->fptr);        /* Get cluster# from the CLMT */\r
+                                       } else\r
+#endif\r
+                                       {\r
+                                               clst = get_fat(&fp->obj, fp->clust);    /* Follow cluster chain on the FAT */\r
+                                       }\r
+                               }\r
+                               if (clst < 2) ABORT(fs, FR_INT_ERR);\r
+                               if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
+                               fp->clust = clst;                               /* Update current cluster */\r
+                       }\r
+                       sect = clust2sect(fs, fp->clust);       /* Get current sector */\r
+                       if (!sect) ABORT(fs, FR_INT_ERR);\r
+                       sect += csect;\r
+                       cc = btr / SS(fs);                                      /* When remaining bytes >= sector size, */\r
+                       if (cc) {                                                       /* Read maximum contiguous sectors directly */\r
+                               if (csect + cc > fs->csize) {   /* Clip at cluster boundary */\r
+                                       cc = fs->csize - csect;\r
+                               }\r
+                               if (disk_read(fs->drv, rbuff, sect, cc) != RES_OK) {\r
+                                       ABORT(fs, FR_DISK_ERR);\r
+                               }\r
+#if !_FS_READONLY && _FS_MINIMIZE <= 2                 /* Replace one of the read sectors with cached data if it contains a dirty sector */\r
+#if _FS_TINY\r
+                               if (fs->wflag && fs->winsect - sect < cc) {\r
+                                       mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));\r
+                               }\r
+#else\r
+                               if ((fp->flag & _FA_DIRTY) && fp->sect - sect < cc) {\r
+                                       mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));\r
+                               }\r
+#endif\r
+#endif\r
+                               rcnt = SS(fs) * cc;                             /* Number of bytes transferred */\r
+                               continue;\r
+                       }\r
+#if !_FS_TINY\r
+                       if (fp->sect != sect) {                 /* Load data sector if not in cache */\r
+#if !_FS_READONLY\r
+                               if (fp->flag & _FA_DIRTY) {             /* Write-back dirty sector cache */\r
+                                       if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {\r
+                                               ABORT(fs, FR_DISK_ERR);\r
+                                       }\r
+                                       fp->flag &= ~_FA_DIRTY;\r
+                               }\r
+#endif\r
+                               if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK)     {       /* Fill sector cache */\r
+                                       ABORT(fs, FR_DISK_ERR);\r
+                               }\r
+                       }\r
+#endif\r
+                       fp->sect = sect;\r
+               }\r
+               rcnt = SS(fs) - ((UINT)fp->fptr % SS(fs));      /* Get partial sector data from sector buffer */\r
+               if (rcnt > btr) rcnt = btr;\r
+#if _FS_TINY\r
+               if (move_window(fs, fp->sect) != FR_OK) {       /* Move sector window */\r
+                       ABORT(fs, FR_DISK_ERR);\r
+               }\r
+               mem_cpy(rbuff, &fs->win[fp->fptr % SS(fs)], rcnt);      /* Pick partial sector */\r
+#else\r
+               mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fs)], rcnt);      /* Pick partial sector */\r
+#endif\r
+       }\r
+\r
+       LEAVE_FF(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
+       FATFS *fs;\r
+       DWORD clst, sect;\r
+       UINT wcnt, cc, csect;\r
+       const BYTE *wbuff = (const BYTE*)buff;\r
+\r
+\r
+       *bw = 0;        /* Clear write byte counter */\r
+       res = validate(fp, &fs);\r
+       if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);       /* Check validity */\r
+       if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);    /* Check access mode */\r
+\r
+       /* Check fptr wrap-around (file size cannot exceed the limit on each FAT specs) */\r
+       if ((_FS_EXFAT && fs->fs_type == FS_EXFAT && fp->fptr + btw < fp->fptr)\r
+               || (DWORD)fp->fptr + btw < (DWORD)fp->fptr) {\r
+               btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr);\r
+       }\r
+\r
+       for ( ;  btw;                                                   /* Repeat until all data written */\r
+               wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize, *bw += wcnt, btw -= wcnt) {\r
+               if ((fp->fptr % SS(fs)) == 0) {         /* On the sector boundary? */\r
+                       csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1);    /* Sector offset in the cluster */\r
+                       if (csect == 0) {                               /* On the cluster boundary? */\r
+                               if (fp->fptr == 0) {            /* On the top of the file? */\r
+                                       clst = fp->obj.sclust;  /* Follow from the origin */\r
+                                       if (clst == 0) {                /* If no cluster is allocated, */\r
+                                               clst = create_chain(&fp->obj, 0);       /* create a new cluster chain */\r
+                                       }\r
+                               } else {                                        /* On the middle or end of the file */\r
+#if _USE_FASTSEEK\r
+                                       if (fp->cltbl) {\r
+                                               clst = clmt_clust(fp, fp->fptr);        /* Get cluster# from the CLMT */\r
+                                       } else\r
+#endif\r
+                                       {\r
+                                               clst = create_chain(&fp->obj, fp->clust);       /* Follow or stretch cluster chain on the FAT */\r
+                                       }\r
+                               }\r
+                               if (clst == 0) break;           /* Could not allocate a new cluster (disk full) */\r
+                               if (clst == 1) ABORT(fs, FR_INT_ERR);\r
+                               if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
+                               fp->clust = clst;                       /* Update current cluster */\r
+                               if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */\r
+                       }\r
+#if _FS_TINY\r
+                       if (fs->winsect == fp->sect && sync_window(fs) != FR_OK)        {       /* Write-back sector cache */\r
+                               ABORT(fs, FR_DISK_ERR);\r
+                       }\r
+#else\r
+                       if (fp->flag & _FA_DIRTY) {             /* Write-back sector cache */\r
+                               if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {\r
+                                       ABORT(fs, FR_DISK_ERR);\r
+                               }\r
+                               fp->flag &= ~_FA_DIRTY;\r
+                       }\r
+#endif\r
+                       sect = clust2sect(fs, fp->clust);       /* Get current sector */\r
+                       if (!sect) ABORT(fs, FR_INT_ERR);\r
+                       sect += csect;\r
+                       cc = btw / SS(fs);                              /* When remaining bytes >= sector size, */\r
+                       if (cc) {                                               /* Write maximum contiguous sectors directly */\r
+                               if (csect + cc > fs->csize) {   /* Clip at cluster boundary */\r
+                                       cc = fs->csize - csect;\r
+                               }\r
+                               if (disk_write(fs->drv, wbuff, sect, cc) != RES_OK) {\r
+                                       ABORT(fs, FR_DISK_ERR);\r
+                               }\r
+#if _FS_MINIMIZE <= 2\r
+#if _FS_TINY\r
+                               if (fs->winsect - sect < cc) {  /* Refill sector cache if it gets invalidated by the direct write */\r
+                                       mem_cpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));\r
+                                       fs->wflag = 0;\r
+                               }\r
+#else\r
+                               if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */\r
+                                       mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));\r
+                                       fp->flag &= ~_FA_DIRTY;\r
+                               }\r
+#endif\r
+#endif\r
+                               wcnt = SS(fs) * cc;             /* Number of bytes transferred */\r
+                               continue;\r
+                       }\r
+#if _FS_TINY\r
+                       if (fp->fptr >= fp->obj.objsize) {      /* Avoid silly cache filling at growing edge */\r
+                               if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);\r
+                               fs->winsect = sect;\r
+                       }\r
+#else\r
+                       if (fp->sect != sect) {         /* Fill sector cache with file data */\r
+                               if (fp->fptr < fp->obj.objsize &&\r
+                                       disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) {\r
+                                               ABORT(fs, FR_DISK_ERR);\r
+                               }\r
+                       }\r
+#endif\r
+                       fp->sect = sect;\r
+               }\r
+               wcnt = SS(fs) - ((UINT)fp->fptr % SS(fs));      /* Put partial sector into file I/O buffer */\r
+               if (wcnt > btw) wcnt = btw;\r
+#if _FS_TINY\r
+               if (move_window(fs, fp->sect) != FR_OK) {       /* Move sector window */\r
+                       ABORT(fs, FR_DISK_ERR);\r
+               }\r
+               mem_cpy(&fs->win[fp->fptr % SS(fs)], wbuff, wcnt);      /* Fit partial sector */\r
+               fs->wflag = 1;\r
+#else\r
+               mem_cpy(&fp->buf[fp->fptr % SS(fs)], wbuff, wcnt);      /* Fit partial sector */\r
+               fp->flag |= _FA_DIRTY;\r
+#endif\r
+       }\r
+\r
+       fp->flag |= _FA_MODIFIED;                                               /* Set file change flag */\r
+\r
+       LEAVE_FF(fs, FR_OK);\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Synchronize the File                                                  */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_sync (\r
+       FIL* fp         /* Pointer to the file object */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs;\r
+       DWORD tm;\r
+       BYTE *dir;\r
+       DEF_DIRBUF;\r
+\r
+\r
+       res = validate(fp, &fs);        /* Check validity of the object */\r
+       if (res == FR_OK) {\r
+               if (fp->flag & _FA_MODIFIED) {  /* Is there any change to the file? */\r
+#if !_FS_TINY\r
+                       if (fp->flag & _FA_DIRTY) {     /* Write-back cached data if needed */\r
+                               if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {\r
+                                       LEAVE_FF(fs, FR_DISK_ERR);\r
+                               }\r
+                               fp->flag &= ~_FA_DIRTY;\r
+                       }\r
+#endif\r
+                       /* Update the directory entry */\r
+                       tm = GET_FATTIME();                             /* Modified time */\r
+#if _FS_EXFAT\r
+                       if (fs->fs_type == FS_EXFAT) {\r
+                               res = fill_fat_chain(&fp->obj); /* Create FAT chain if needed */\r
+                               if (res == FR_OK) {\r
+                                       DIR dj;\r
+\r
+                                       INIT_DIRBUF(fs);\r
+                                       res = load_obj_dir(&dj, &fp->obj);      /* Load directory entry block */\r
+                                       if (res == FR_OK) {\r
+                                               fs->dirbuf[XDIR_Attr] |= AM_ARC;                                        /* Set archive bit */\r
+                                               fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1;           /* Update file allocation info */\r
+                                               st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust);\r
+                                               st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize);\r
+                                               st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize);\r
+                                               st_dword(fs->dirbuf + XDIR_ModTime, tm);                        /* Update modified time */\r
+                                               fs->dirbuf[XDIR_ModTime10] = 0;\r
+                                               st_dword(fs->dirbuf + XDIR_AccTime, 0);\r
+                                               res = store_xdir(&dj);  /* Restore it to the directory */\r
+                                               if (res == FR_OK) {\r
+                                                       res = sync_fs(fs);\r
+                                                       fp->flag &= ~_FA_MODIFIED;\r
+                                               }\r
+                                       }\r
+                                       FREE_DIRBUF();\r
+                               }\r
+                       } else\r
+#endif\r
+                       {\r
+                               res = move_window(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_clust(fp->obj.fs, dir, fp->obj.sclust);              /* Update file allocation info  */\r
+                                       st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize);   /* Update file size */\r
+                                       st_dword(dir + DIR_WrtTime, tm);                                /* Update modified time */\r
+                                       st_word(dir + DIR_LstAccDate, 0);\r
+                                       fs->wflag = 1;\r
+                                       res = sync_fs(fs);                                      /* Restore it to the directory */\r
+                                       fp->flag &= ~_FA_MODIFIED;\r
+                               }\r
+                       }\r
+               }\r
+       }\r
+\r
+       LEAVE_FF(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
+       FATFS *fs;\r
+\r
+#if !_FS_READONLY\r
+       res = f_sync(fp);                                       /* Flush cached data */\r
+       if (res == FR_OK)\r
+#endif\r
+       {\r
+               res = validate(fp, &fs);        /* Lock volume */\r
+               if (res == FR_OK) {\r
+#if _FS_LOCK != 0\r
+                       res = dec_lock(fp->obj.lockid); /* Decrement file open counter */\r
+                       if (res == FR_OK)\r
+#endif\r
+                       {\r
+                               fp->obj.fs = 0;                 /* Invalidate file object */\r
+                       }\r
+#if _FS_REENTRANT\r
+                       unlock_fs(fs, FR_OK);           /* Unlock volume */\r
+#endif\r
+               }\r
+       }\r
+       return res;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Change Current Directory or Current Drive, Get Current Directory      */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+#if _FS_RPATH >= 1\r
+#if _VOLUMES >= 2\r
+FRESULT f_chdrive (\r
+       const TCHAR* path               /* Drive number */\r
+)\r
+{\r
+       int vol;\r
+\r
+\r
+       vol = get_ldnumber(&path);\r
+       if (vol < 0) return FR_INVALID_DRIVE;\r
+\r
+       CurrVol = (BYTE)vol;\r
+\r
+       return FR_OK;\r
+}\r
+#endif\r
+\r
+\r
+FRESULT f_chdir (\r
+       const TCHAR* path       /* Pointer to the directory path */\r
+)\r
+{\r
+       FRESULT res;\r
+       DIR dj;\r
+       FATFS *fs;\r
+       DEF_NAMBUF;\r
+\r
+       /* Get logical drive number */\r
+       res = find_volume(&path, &fs, 0);\r
+       if (res == FR_OK) {\r
+               dj.obj.fs = fs;\r
+               INIT_NAMBUF(dj);\r
+               res = follow_path(&dj, path);           /* Follow the path */\r
+               if (res == FR_OK) {                                     /* Follow completed */\r
+                       if (dj.fn[NSFLAG] & NS_NONAME) {\r
+                               fs->cdir = dj.obj.sclust;       /* It is the start directory itself */\r
+#if _FS_EXFAT\r
+                               if (fs->fs_type == FS_EXFAT) {\r
+                                       fs->cdc_scl = dj.obj.c_scl;\r
+                                       fs->cdc_size = dj.obj.c_size;\r
+                                       fs->cdc_ofs = dj.obj.c_ofs;\r
+                               }\r
+#endif\r
+                       } else {\r
+                               if (dj.obj.attr & AM_DIR) {     /* It is a sub-directory */\r
+#if _FS_EXFAT\r
+                                       if (fs->fs_type == FS_EXFAT) {\r
+                                               fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus);         /* Sub-directory cluster */\r
+                                               fs->cdc_scl = dj.obj.sclust;                                            /* Save containing directory information */\r
+                                               fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;\r
+                                               fs->cdc_ofs = dj.blk_ofs;\r
+                                       } else\r
+#endif\r
+                                       {\r
+                                               fs->cdir = ld_clust(fs, dj.dir);                                        /* Sub-directory cluster */\r
+                                       }\r
+                               } else {\r
+                                       res = FR_NO_PATH;               /* Reached but a file */\r
+                               }\r
+                       }\r
+               }\r
+               FREE_NAMBUF();\r
+               if (res == FR_NO_FILE) res = FR_NO_PATH;\r
+       }\r
+\r
+       LEAVE_FF(fs, res);\r
+}\r
+\r
+\r
+#if _FS_RPATH >= 2\r
+FRESULT f_getcwd (\r
+       TCHAR* buff,    /* Pointer to the directory path */\r
+       UINT len                /* Size of path */\r
+)\r
+{\r
+       FRESULT res;\r
+       DIR dj;\r
+       FATFS *fs;\r
+       UINT i, n;\r
+       DWORD ccl;\r
+       TCHAR *tp;\r
+       FILINFO fno;\r
+       DEF_NAMBUF;\r
+\r
+\r
+       *buff = 0;\r
+       /* Get logical drive number */\r
+       res = find_volume((const TCHAR**)&buff, &fs, 0);        /* Get current volume */\r
+       if (res == FR_OK) {\r
+               dj.obj.fs = fs;\r
+               INIT_NAMBUF(dj);\r
+               i = len;                        /* Bottom of buffer (directory stack base) */\r
+               if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {    /* (Cannot do getcwd on exFAT and returns root path) */\r
+                       dj.obj.sclust = fs->cdir;                               /* Start to follow upper directory from current directory */\r
+                       while ((ccl = dj.obj.sclust) != 0) {    /* Repeat while current directory is a sub-directory */\r
+                               res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */\r
+                               if (res != FR_OK) break;\r
+                               res = move_window(fs, dj.sect);\r
+                               if (res != FR_OK) break;\r
+                               dj.obj.sclust = ld_clust(fs, dj.dir);   /* Goto parent directory */\r
+                               res = dir_sdi(&dj, 0);\r
+                               if (res != FR_OK) break;\r
+                               do {                                                    /* Find the entry links to the child directory */\r
+                                       res = dir_read(&dj, 0);\r
+                                       if (res != FR_OK) break;\r
+                                       if (ccl == ld_clust(fs, dj.dir)) break; /* Found the entry */\r
+                                       res = dir_next(&dj, 0);\r
+                               } while (res == FR_OK);\r
+                               if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */\r
+                               if (res != FR_OK) break;\r
+                               get_fileinfo(&dj, &fno);                /* Get the directory name and push it to the buffer */\r
+                               for (n = 0; fno.fname[n]; n++) ;\r
+                               if (i < n + 3) {\r
+                                       res = FR_NOT_ENOUGH_CORE; break;\r
+                               }\r
+                               while (n) buff[--i] = fno.fname[--n];\r
+                               buff[--i] = '/';\r
+                       }\r
+               }\r
+               tp = buff;\r
+               if (res == FR_OK) {\r
+#if _VOLUMES >= 2\r
+                       *tp++ = '0' + CurrVol;                  /* Put drive number */\r
+                       *tp++ = ':';\r
+#endif\r
+                       if (i == len) {                                 /* Root-directory */\r
+                               *tp++ = '/';\r
+                       } else {                                                /* Sub-directroy */\r
+                               do              /* Add stacked path str */\r
+                                       *tp++ = buff[i++];\r
+                               while (i < len);\r
+                       }\r
+               }\r
+               *tp = 0;\r
+               FREE_NAMBUF();\r
+       }\r
+\r
+       LEAVE_FF(fs, res);\r
+}\r
+#endif /* _FS_RPATH >= 2 */\r
+#endif /* _FS_RPATH >= 1 */\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
+       FSIZE_t ofs             /* File pointer from top of file */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs;\r
+       DWORD clst, bcs, nsect;\r
+       FSIZE_t ifptr;\r
+#if _USE_FASTSEEK\r
+       DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;\r
+#endif\r
+\r
+       res = validate(fp, &fs);                /* Check validity of the object */\r
+       if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);       /* Check validity */\r
+#if _USE_FASTSEEK\r
+       if (fp->cltbl) {        /* Fast seek */\r
+               if (ofs == CREATE_LINKMAP) {    /* Create CLMT */\r
+                       tbl = fp->cltbl;\r
+                       tlen = *tbl++; ulen = 2;        /* Given table size and required table size */\r
+                       cl = fp->sclust;                        /* Top of the chain */\r
+                       if (cl) {\r
+                               do {\r
+                                       /* Get a fragment */\r
+                                       tcl = cl; ncl = 0; ulen += 2;   /* Top, length and used items */\r
+                                       do {\r
+                                               pcl = cl; ncl++;\r
+                                               cl = get_fat(fs, cl);\r
+                                               if (cl <= 1) ABORT(fs, FR_INT_ERR);\r
+                                               if (cl == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
+                                       } while (cl == pcl + 1);\r
+                                       if (ulen <= tlen) {             /* Store the length and top of the fragment */\r
+                                               *tbl++ = ncl; *tbl++ = tcl;\r
+                                       }\r
+                               } while (cl < fs->n_fatent);    /* Repeat until end of chain */\r
+                       }\r
+                       *fp->cltbl = ulen;      /* Number of items used */\r
+                       if (ulen <= tlen) {\r
+                               *tbl = 0;               /* Terminate table */\r
+                       } else {\r
+                               res = FR_NOT_ENOUGH_CORE;       /* Given table size is smaller than required */\r
+                       }\r
+               } else {                                                /* Fast seek */\r
+                       if (ofs > fp->fsize) {          /* Clip offset at the file size */\r
+                               ofs = fp->fsize;\r
+                       }\r
+                       fp->fptr = ofs;                         /* Set file pointer */\r
+                       if (ofs) {\r
+                               fp->clust = clmt_clust(fp, ofs - 1);\r
+                               dsc = clust2sect(fs, fp->clust);\r
+                               if (!dsc) ABORT(fs, FR_INT_ERR);\r
+                               dsc += (ofs - 1) / SS(fs) & (fs->csize - 1);\r
+                               if (fp->fptr % SS(fs) && dsc != fp->sect) {     /* Refill sector cache if needed */\r
+#if !_FS_TINY\r
+#if !_FS_READONLY\r
+                                       if (fp->flag & _FA_DIRTY) {             /* Write-back dirty sector cache */\r
+                                               if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {\r
+                                                       ABORT(fp, FR_DISK_ERR);\r
+                                               }\r
+                                               fp->flag &= ~_FA_DIRTY;\r
+                                       }\r
+#endif\r
+                                       if (disk_read(fs->drv, fp->buf, dsc, 1) != RES_OK) {    /* Load current sector */\r
+                                               ABORT(fs, FR_DISK_ERR);\r
+                                       }\r
+#endif\r
+                                       fp->sect = dsc;\r
+                               }\r
+                       }\r
+               }\r
+       } else\r
+#endif\r
+\r
+       /* Normal Seek */\r
+       {\r
+               if (ofs > fp->obj.objsize                               /* In read-only mode, clip offset with the file size */\r
+#if !_FS_READONLY\r
+                        && !(fp->flag & FA_WRITE)\r
+#endif\r
+                       ) ofs = fp->obj.objsize;\r
+\r
+               ifptr = fp->fptr;\r
+               fp->fptr = nsect = 0;\r
+               if (ofs) {\r
+                       bcs = (DWORD)fs->csize * SS(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->clust;\r
+                       } else {                                                                        /* When seek to back cluster, */\r
+                               clst = fp->obj.sclust;                                  /* 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->obj, 0);\r
+                                       if (clst == 1) ABORT(fs, FR_INT_ERR);\r
+                                       if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
+                                       fp->obj.sclust = clst;\r
+                               }\r
+#endif\r
+                               fp->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->obj, clst);    /* Force stretch 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->obj, clst); /* Follow cluster chain if not in write mode */\r
+                                       if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);\r
+                                       if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR);\r
+                                       fp->clust = clst;\r
+                                       fp->fptr += bcs;\r
+                                       ofs -= bcs;\r
+                               }\r
+                               fp->fptr += ofs;\r
+                               if (ofs % SS(fs)) {\r
+                                       nsect = clust2sect(fs, clst);   /* Current sector */\r
+                                       if (!nsect) ABORT(fs, FR_INT_ERR);\r
+                                       nsect += (DWORD)(ofs / SS(fs));\r
+                               }\r
+                       }\r
+               }\r
+               if (fp->fptr % SS(fs) && nsect != fp->sect) {   /* Fill sector cache if needed */\r
+#if !_FS_TINY\r
+#if !_FS_READONLY\r
+                       if (fp->flag & _FA_DIRTY) {                     /* Write-back dirty sector cache */\r
+                               if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {\r
+                                       ABORT(fs, FR_DISK_ERR);\r
+                               }\r
+                               fp->flag &= ~_FA_DIRTY;\r
+                       }\r
+#endif\r
+                       if (disk_read(fs->drv, fp->buf, nsect, 1) != RES_OK) {  /* Fill sector cache */\r
+                               ABORT(fs, FR_DISK_ERR);\r
+                       }\r
+#endif\r
+                       fp->sect = nsect;\r
+               }\r
+#if !_FS_READONLY\r
+               if (fp->fptr > fp->obj.objsize) {               /* Set file change flag if the file size is extended */\r
+                       fp->obj.objsize = fp->fptr;\r
+                       fp->flag |= _FA_MODIFIED;\r
+               }\r
+#endif\r
+       }\r
+\r
+       LEAVE_FF(fs, res);\r
+}\r
+\r
+\r
+\r
+#if _FS_MINIMIZE <= 1\r
+/*-----------------------------------------------------------------------*/\r
+/* Create a Directory Object                                             */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_opendir (\r
+       DIR* dp,                        /* Pointer to directory object to create */\r
+       const TCHAR* path       /* Pointer to the directory path */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs;\r
+       _FDID *obj;\r
+       DEF_NAMBUF;\r
+\r
+\r
+       if (!dp) return FR_INVALID_OBJECT;\r
+\r
+       /* Get logical drive number */\r
+       obj = &dp->obj;\r
+       res = find_volume(&path, &fs, 0);\r
+       if (res == FR_OK) {\r
+               obj->fs = fs;\r
+               INIT_NAMBUF(*dp);\r
+               res = follow_path(dp, path);                    /* Follow the path to the directory */\r
+               if (res == FR_OK) {                                             /* Follow completed */\r
+                       if (!(dp->fn[NSFLAG] & NS_NONAME)) {    /* It is not the origin directory itself */\r
+                               if (obj->attr & AM_DIR) {               /* This object is a sub-directory */\r
+#if _FS_EXFAT\r
+                                       if (fs->fs_type == FS_EXFAT) {\r
+                                               obj->c_scl = obj->sclust;       /* Save containing directory inforamation */\r
+                                               obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;\r
+                                               obj->c_ofs = dp->blk_ofs;\r
+                                               obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus);      /* Get object location and status */\r
+                                               obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r
+                                               obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;\r
+                                       } else\r
+#endif\r
+                                       {\r
+                                               obj->sclust = ld_clust(fs, dp->dir);    /* Get object location */\r
+                                       }\r
+                               } else {                                                /* This object is a file */\r
+                                       res = FR_NO_PATH;\r
+                               }\r
+                       }\r
+                       if (res == FR_OK) {\r
+                               obj->id = fs->id;\r
+                               res = dir_sdi(dp, 0);                   /* Rewind directory */\r
+#if _FS_LOCK != 0\r
+                               if (res == FR_OK) {\r
+                                       if (obj->sclust) {\r
+                                               obj->lockid = inc_lock(dp, 0);  /* Lock the sub directory */\r
+                                               if (!obj->lockid) res = FR_TOO_MANY_OPEN_FILES;\r
+                                       } else {\r
+                                               obj->lockid = 0;        /* Root directory need not to be locked */\r
+                                       }\r
+                               }\r
+#endif\r
+                       }\r
+               }\r
+               FREE_NAMBUF();\r
+               if (res == FR_NO_FILE) res = FR_NO_PATH;\r
+       }\r
+       if (res != FR_OK) obj->fs = 0;          /* Invalidate the directory object if function faild */\r
+\r
+       LEAVE_FF(fs, res);\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Close Directory                                                       */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_closedir (\r
+       DIR *dp         /* Pointer to the directory object to be closed */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs;\r
+\r
+\r
+       res = validate(dp, &fs);\r
+       if (res == FR_OK) {\r
+#if _FS_LOCK != 0\r
+               if (dp->obj.lockid) {                           /* Decrement sub-directory open counter */\r
+                       res = dec_lock(dp->obj.lockid);\r
+               }\r
+               if (res == FR_OK)\r
+#endif\r
+               {\r
+                       dp->obj.fs = 0;                 /* Invalidate directory object */\r
+               }\r
+#if _FS_REENTRANT\r
+               unlock_fs(fs, FR_OK);           /* Unlock volume */\r
+#endif\r
+       }\r
+       return res;\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Read Directory Entries in Sequence                                    */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_readdir (\r
+       DIR* dp,                        /* Pointer to the open directory object */\r
+       FILINFO* fno            /* Pointer to file information to return */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs;\r
+       DEF_NAMBUF;\r
+\r
+\r
+       res = validate(dp, &fs);        /* Check validity of the object */\r
+       if (res == FR_OK) {\r
+               if (!fno) {\r
+                       res = dir_sdi(dp, 0);                   /* Rewind the directory object */\r
+               } else {\r
+                       INIT_NAMBUF(*dp);\r
+                       res = dir_read(dp, 0);                  /* Read an item */\r
+                       if (res == FR_NO_FILE) res = FR_OK;     /* Ignore end of directory */\r
+                       if (res == FR_OK) {                             /* A valid entry is found */\r
+                               get_fileinfo(dp, fno);          /* Get the object information */\r
+                               res = dir_next(dp, 0);          /* Increment index for next */\r
+                               if (res == FR_NO_FILE) res = FR_OK;     /* Ignore end of directory now */\r
+                       }\r
+                       FREE_NAMBUF();\r
+               }\r
+       }\r
+       LEAVE_FF(fs, res);\r
+}\r
+\r
+\r
+\r
+#if _USE_FIND\r
+/*-----------------------------------------------------------------------*/\r
+/* Find Next File                                                        */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_findnext (\r
+       DIR* dp,                /* Pointer to the open directory object */\r
+       FILINFO* fno    /* Pointer to the file information structure */\r
+)\r
+{\r
+       FRESULT res;\r
+\r
+\r
+       for (;;) {\r
+               res = f_readdir(dp, fno);               /* Get a directory item */\r
+               if (res != FR_OK || !fno || !fno->fname[0]) break;      /* Terminate if any error or end of directory */\r
+               if (pattern_matching(dp->pat, fno->fname, 0, 0)) break;         /* Test for the file name */\r
+#if _USE_LFN != 0 && _USE_FIND == 2\r
+               if (pattern_matching(dp->pat, fno->altname, 0, 0)) break;       /* Test for alternative name if exist */\r
+#endif\r
+       }\r
+       return res;\r
+}\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Find First File                                                       */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_findfirst (\r
+       DIR* dp,                                /* Pointer to the blank directory object */\r
+       FILINFO* fno,                   /* Pointer to the file information structure */\r
+       const TCHAR* path,              /* Pointer to the directory to open */\r
+       const TCHAR* pattern    /* Pointer to the matching pattern */\r
+)\r
+{\r
+       FRESULT res;\r
+\r
+\r
+       dp->pat = pattern;              /* Save pointer to pattern string */\r
+       res = f_opendir(dp, path);              /* Open the target directory */\r
+       if (res == FR_OK) {\r
+               res = f_findnext(dp, fno);      /* Find the first item */\r
+       }\r
+       return res;\r
+}\r
+\r
+#endif /* _USE_FIND */\r
+\r
+\r
+\r
+#if _FS_MINIMIZE == 0\r
+/*-----------------------------------------------------------------------*/\r
+/* Get File Status                                                       */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_stat (\r
+       const TCHAR* path,      /* Pointer to the file path */\r
+       FILINFO* fno            /* Pointer to file information to return */\r
+)\r
+{\r
+       FRESULT res;\r
+       DIR dj;\r
+       DEF_NAMBUF;\r
+\r
+\r
+       /* Get logical drive number */\r
+       res = find_volume(&path, &dj.obj.fs, 0);\r
+       if (res == FR_OK) {\r
+               INIT_NAMBUF(dj);\r
+               res = follow_path(&dj, path);   /* Follow the file path */\r
+               if (res == FR_OK) {                             /* Follow completed */\r
+                       if (dj.fn[NSFLAG] & NS_NONAME) {        /* It is origin directory */\r
+                               res = FR_INVALID_NAME;\r
+                       } else {                                                        /* Found an object */\r
+                               if (fno) get_fileinfo(&dj, fno);\r
+                       }\r
+               }\r
+               FREE_NAMBUF();\r
+       }\r
+\r
+       LEAVE_FF(dj.obj.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 TCHAR* path,      /* Path name of the logical drive number */\r
+       DWORD* nclst,           /* Pointer to a variable to return number of free clusters */\r
+       FATFS** fatfs           /* Pointer to return pointer to corresponding file system object */\r
+)\r
+{\r
+       FRESULT res;\r
+       FATFS *fs;\r
+       DWORD nfree, clst, sect, stat;\r
+       UINT i;\r
+       BYTE *p;\r
+       _FDID obj;\r
+\r
+\r
+       /* Get logical drive number */\r
+       res = find_volume(&path, &fs, 0);\r
+       if (res == FR_OK) {\r
+               *fatfs = fs;                            /* Return ptr to the fs object */\r
+               /* If free_clst is valid, return it without full cluster scan */\r
+               if (fs->free_clst <= fs->n_fatent - 2) {\r
+                       *nclst = fs->free_clst;\r
+               } else {\r
+                       /* Get number of free clusters */\r
+                       nfree = 0;\r
+                       if (fs->fs_type == FS_FAT12) {  /* FAT12: Sector unalighed FAT entries */\r
+                               clst = 2; obj.fs = fs;\r
+                               do {\r
+                                       stat = get_fat(&obj, clst);\r
+                                       if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }\r
+                                       if (stat == 1) { res = FR_INT_ERR; break; }\r
+                                       if (stat == 0) nfree++;\r
+                               } while (++clst < fs->n_fatent);\r
+                       } else {\r
+#if _FS_EXFAT\r
+                               if (fs->fs_type == FS_EXFAT) {  /* exFAT: Scan bitmap table */\r
+                                       BYTE bm;\r
+                                       UINT b;\r
+\r
+                                       clst = fs->n_fatent - 2;\r
+                                       sect = fs->database;\r
+                                       i = 0;\r
+                                       do {\r
+                                               if (i == 0 && (res = move_window(fs, sect++)) != FR_OK) break;\r
+                                               for (b = 8, bm = fs->win[i]; b && clst; b--, clst--) {\r
+                                                       if (!(bm & 1)) nfree++;\r
+                                                       bm >>= 1;\r
+                                               }\r
+                                               i = (i + 1) & (SS(fs) - 1);\r
+                                       } while (clst);\r
+                               } else\r
+#endif\r
+                               {       /* FAT16/32: Sector alighed FAT entries */\r
+                                       clst = fs->n_fatent; sect = fs->fatbase;\r
+                                       i = 0; p = 0;\r
+                                       do {\r
+                                               if (i == 0) {\r
+                                                       res = move_window(fs, sect++);\r
+                                                       if (res != FR_OK) break;\r
+                                                       p = fs->win;\r
+                                                       i = SS(fs);\r
+                                               }\r
+                                               if (fs->fs_type == FS_FAT16) {\r
+                                                       if (ld_word(p) == 0) nfree++;\r
+                                                       p += 2; i -= 2;\r
+                                               } else {\r
+                                                       if ((ld_dword(p) & 0x0FFFFFFF) == 0) nfree++;\r
+                                                       p += 4; i -= 4;\r
+                                               }\r
+                                       } while (--clst);\r
+                               }\r
+                       }\r
+                       *nclst = nfree;                 /* Return the free clusters */\r
+                       fs->free_clst = nfree;  /* Now free_clst is valid */\r
+                       fs->fsi_flag |= 1;              /* FSInfo is to be updated */\r
+               }\r
+       }\r
+\r
+       LEAVE_FF(fs, res);\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
+       FATFS *fs;\r
+       DWORD ncl;\r
+\r
+\r
+       res = validate(fp, &fs);        /* Check validity of the object */\r
+       if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);       /* Check validity */\r
+       if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);    /* Check access mode */\r
+\r
+       if (fp->obj.objsize > fp->fptr) {\r
+               if (fp->fptr == 0) {    /* When set file size to zero, remove entire cluster chain */\r
+                       res = remove_chain(&fp->obj, fp->obj.sclust, 0);\r
+                       fp->obj.sclust = 0;\r
+               } else {                                /* When truncate a part of the file, remove remaining clusters */\r
+                       ncl = get_fat(&fp->obj, fp->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 < fs->n_fatent) {\r
+                               res = remove_chain(&fp->obj, ncl, fp->clust);\r
+                       }\r
+               }\r
+               fp->obj.objsize = fp->fptr;     /* Set file size to current R/W point */\r
+               fp->flag |= _FA_MODIFIED;\r
+#if !_FS_TINY\r
+               if (res == FR_OK && (fp->flag & _FA_DIRTY)) {\r
+                       if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {\r
+                               res = FR_DISK_ERR;\r
+                       } else {\r
+                               fp->flag &= ~_FA_DIRTY;\r
+                       }\r
+               }\r
+#endif\r
+               if (res != FR_OK) ABORT(fs, res);\r
+       }\r
+\r
+       LEAVE_FF(fs, res);\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Delete a File/Directory                                               */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_unlink (\r
+       const TCHAR* path               /* Pointer to the file or directory path */\r
+)\r
+{\r
+       FRESULT res;\r
+       DIR dj, sdj;\r
+       DWORD dclst = 0;\r
+       FATFS *fs;\r
+#if _FS_EXFAT\r
+       _FDID obj;\r
+#endif\r
+       DEF_NAMBUF;\r
+\r
+\r
+       /* Get logical drive number */\r
+       res = find_volume(&path, &fs, FA_WRITE);\r
+       dj.obj.fs = fs;\r
+       if (res == FR_OK) {\r
+               INIT_NAMBUF(dj);\r
+               res = follow_path(&dj, path);           /* Follow the file path */\r
+               if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT)) {\r
+                       res = FR_INVALID_NAME;                  /* Cannot remove dot entry */\r
+               }\r
+#if _FS_LOCK != 0\r
+               if (res == FR_OK) res = chk_lock(&dj, 2);       /* Check if it is an open object */\r
+#endif\r
+               if (res == FR_OK) {                                     /* The object is accessible */\r
+                       if (dj.fn[NSFLAG] & NS_NONAME) {\r
+                               res = FR_INVALID_NAME;          /* Cannot remove the origin directory */\r
+                       } else {\r
+                               if (dj.obj.attr & AM_RDO) {\r
+                                       res = FR_DENIED;                /* Cannot remove R/O object */\r
+                               }\r
+                       }\r
+                       if (res == FR_OK) {\r
+#if _FS_EXFAT\r
+                               obj.fs = fs;\r
+                               if (fs->fs_type == FS_EXFAT) {\r
+                                       obj.sclust = dclst = ld_dword(fs->dirbuf + XDIR_FstClus);\r
+                                       obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);\r
+                                       obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;\r
+                               } else\r
+#endif\r
+                               {\r
+                                       dclst = ld_clust(fs, dj.dir);\r
+                               }\r
+                               if (dj.obj.attr & AM_DIR) {                     /* Is it a sub-directory ? */\r
+#if _FS_RPATH != 0\r
+                                       if (dclst == fs->cdir) {                                /* Is it the current directory? */\r
+                                               res = FR_DENIED;\r
+                                       } else\r
+#endif\r
+                                       {\r
+                                               sdj.obj.fs = fs;                                                /* Open the sub-directory */\r
+                                               sdj.obj.sclust = dclst;\r
+#if _FS_EXFAT\r
+                                               if (fs->fs_type == FS_EXFAT) {\r
+                                                       sdj.obj.objsize = obj.objsize;\r
+                                                       sdj.obj.stat = obj.stat;\r
+                                               }\r
+#endif\r
+                                               res = dir_sdi(&sdj, 0);\r
+                                               if (res == FR_OK) {\r
+                                                       res = dir_read(&sdj, 0);                        /* Read an item */\r
+                                                       if (res == FR_OK) res = FR_DENIED;      /* Not empty? */\r
+                                                       if (res == FR_NO_FILE) res = FR_OK;     /* Empty? */\r
+                                               }\r
+                                       }\r
+                               }\r
+                       }\r
+                       if (res == FR_OK) {\r
+                               res = dir_remove(&dj);                  /* Remove the directory entry */\r
+                               if (res == FR_OK && dclst) {    /* Remove the cluster chain if exist */\r
+#if _FS_EXFAT\r
+                                       res = remove_chain(&obj, dclst, 0);\r
+#else\r
+                                       res = remove_chain(&dj.obj, dclst, 0);\r
+#endif\r
+                               }\r
+                               if (res == FR_OK) res = sync_fs(fs);\r
+                       }\r
+               }\r
+               FREE_NAMBUF();\r
+       }\r
+\r
+       LEAVE_FF(fs, res);\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Create a Directory                                                    */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_mkdir (\r
+       const TCHAR* path               /* Pointer to the directory path */\r
+)\r
+{\r
+       FRESULT res;\r
+       DIR dj;\r
+       FATFS *fs;\r
+       BYTE *dir;\r
+       UINT n;\r
+       DWORD dsc, dcl, pcl, tm;\r
+       DEF_NAMBUF;\r
+\r
+\r
+       /* Get logical drive number */\r
+       res = find_volume(&path, &fs, FA_WRITE);\r
+       dj.obj.fs = fs;\r
+       if (res == FR_OK) {\r
+               INIT_NAMBUF(dj);\r
+               res = follow_path(&dj, path);                   /* Follow the file path */\r
+               if (res == FR_OK) res = FR_EXIST;               /* Any object with same name is already existing */\r
+               if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT)) {\r
+                       res = FR_INVALID_NAME;\r
+               }\r
+               if (res == FR_NO_FILE) {                                /* Can create a new directory */\r
+                       dcl = create_chain(&dj.obj, 0);         /* Allocate a cluster for the new directory table */\r
+                       dj.obj.objsize = (DWORD)fs->csize * SS(fs);\r
+                       res = FR_OK;\r
+                       if (dcl == 0) res = FR_DENIED;          /* No space to allocate a new cluster */\r
+                       if (dcl == 1) res = FR_INT_ERR;\r
+                       if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;\r
+                       if (res == FR_OK) res = sync_window(fs);        /* Flush FAT */\r
+                       tm = GET_FATTIME();\r
+                       if (res == FR_OK) {                                     /* Initialize the new directory table */\r
+                               dsc = clust2sect(fs, dcl);\r
+                               dir = fs->win;\r
+                               mem_set(dir, 0, SS(fs));\r
+                               if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {\r
+                                       mem_set(dir + DIR_Name, ' ', 11);       /* Create "." entry */\r
+                                       dir[DIR_Name] = '.';\r
+                                       dir[DIR_Attr] = AM_DIR;\r
+                                       st_dword(dir + DIR_WrtTime, tm);\r
+                                       st_clust(fs, dir, dcl);\r
+                                       mem_cpy(dir + SZDIRE, dir, SZDIRE);     /* Create ".." entry */\r
+                                       dir[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;\r
+                                       if (fs->fs_type == FS_FAT32 && pcl == fs->dirbase)\r
+                                               pcl = 0;\r
+                                       st_clust(fs, dir + SZDIRE, pcl);\r
+                               }\r
+                               for (n = fs->csize; n; n--) {   /* Write dot entries and clear following sectors */\r
+                                       fs->winsect = dsc++;\r
+                                       fs->wflag = 1;\r
+                                       res = sync_window(fs);\r
+                                       if (res != FR_OK) break;\r
+                                       mem_set(dir, 0, SS(fs));\r
+                               }\r
+                       }\r
+                       if (res == FR_OK) res = dir_register(&dj);      /* Register the object to the directoy */\r
+                       if (res == FR_OK) {\r
+#if _FS_EXFAT\r
+                               if (fs->fs_type == FS_EXFAT) {\r
+                                       st_dword(fs->dirbuf + XDIR_ModTime, tm);\r
+                                       st_dword(fs->dirbuf + XDIR_FstClus, dcl);\r
+                                       st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)dj.obj.objsize);\r
+                                       st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)dj.obj.objsize);\r
+                                       fs->dirbuf[XDIR_GenFlags] = 3;\r
+                                       fs->dirbuf[XDIR_Attr] = AM_DIR;\r
+                                       res = store_xdir(&dj);\r
+                               } else\r
+#endif\r
+                               {\r
+                                       dir = dj.dir;\r
+                                       st_dword(dir + DIR_WrtTime, tm);        /* Created time */\r
+                                       st_clust(fs, dir, dcl);                         /* Table start cluster */\r
+                                       dir[DIR_Attr] = AM_DIR;                         /* Attribute */\r
+                                       fs->wflag = 1;\r
+                               }\r
+                               res = sync_fs(fs);\r
+                       } else {\r
+                               remove_chain(&dj.obj, dcl, 0);          /* Could not register, remove cluster chain */\r
+                       }\r
+               }\r
+               FREE_NAMBUF();\r
+       }\r
+\r
+       LEAVE_FF(fs, res);\r
+}\r
+\r
+\r
+\r
+\r
+/*-----------------------------------------------------------------------*/\r
+/* Rename a File/Directory                                               */\r
+/*-----------------------------------------------------------------------*/\r
+\r
+FRESULT f_rename (\r
+       const TCHAR* path_old,  /* Pointer to the object name to be renamed */\r
+       const TCHAR* path_new   /* Pointer to the new name */\r
+)\r
+{\r
+       FRESULT res;\r
+       DIR djo, djn;\r
+       FATFS *fs;\r
+       BYTE buf[_FS_EXFAT ? SZDIRE * 2 : 24], *dir;\r
+       DWORD dw;\r
+       DEF_NAMBUF;\r
+\r
+\r
+       get_ldnumber(&path_new);                                                /* Ignore drive number of new name */\r
+       res = find_volume(&path_old, &fs, FA_WRITE);    /* Get logical drive number of the old object */\r
+       if (res == FR_OK) {\r
+               djo.obj.fs = fs;\r
+               INIT_NAMBUF(djo);\r
+               res = follow_path(&djo, path_old);              /* Check old object */\r
+               if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME;     /* Check validity of name */\r
+#if _FS_LOCK != 0\r
+               if (res == FR_OK) res = chk_lock(&djo, 2);\r
+#endif\r
+               if (res == FR_OK) {                                             /* Object to be renamed is found */\r
+#if _FS_EXFAT\r
+                       if (fs->fs_type == FS_EXFAT) {  /* At exFAT */\r
+                               BYTE nf, nn;\r
+                               WORD nh;\r
+