/*----------------------------------------------------------------------------/
-/ FatFs - FAT file system module R0.08 (C)ChaN, 2010
+/ FatFs - FAT file system module R0.09a (C)ChaN, 2012
/-----------------------------------------------------------------------------/
/ FatFs module is a generic FAT file system module for small embedded systems.
/ This is a free software that opened for education, research and commercial
/ developments under license policy of following terms.
/
-/ Copyright (C) 2010, ChaN, all right reserved.
+/ Copyright (C) 2012, ChaN, all right reserved.
/
/ * The FatFs module is a free software and there is NO WARRANTY.
/ * No restriction on use. You can use, modify and redistribute it for
/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
/ Fixed off by one error at FAT sub-type determination.
/ Fixed btr in f_read() can be mistruncated.
-/ Fixed cached sector is not flushed when create and close
-/ without write.
+/ Fixed cached sector is not flushed when create and close without write.
/
/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
-/ Improved performance of f_lseek() on moving to the same
-/ or following cluster.
+/ Improved performance of f_lseek() on moving to the same or following cluster.
/
-/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a buffer configuration option.
-/ Added long file name support.
-/ Added multiple code page support.
+/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
+/ Added long file name feature.
+/ Added multiple code page feature.
/ Added re-entrancy for multitask operation.
/ Added auto cluster size selection to f_mkfs().
/ Added rewind option to f_readdir().
/ Changed result code of critical errors.
/ Renamed string functions to avoid name collision.
/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
-/ Added multiple sector size support.
+/ Added multiple sector size feature.
/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
/ Fixed wrong cache control in f_lseek().
/ Added relative path feature.
/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
/ Fixed name matching error on the 13 char boundary.
/ Added a configuration option, _LFN_UNICODE.
-/ Changed f_readdir() to return the SFN with always upper
-/ case on non-LFN cfg.
+/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
/
-/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN)
+/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
/ Added file lock feature. (_FS_SHARE)
/ Added fast seek feature. (_USE_FASTSEEK)
/ Changed some types on the API, XCHAR->TCHAR.
/ Changed fname member in the FILINFO structure on Unicode cfg.
/ String functions support UTF-8 encoding files on Unicode cfg.
+/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2)
+/ Added sector erase feature. (_USE_ERASE)
+/ Moved file lock semaphore table from fs object to the bss.
+/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
+/ Fixed f_mkfs() creates wrong FAT32 volume.
+/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
+/ f_lseek() reports required table size on creating CLMP.
+/ Extended format syntax of f_printf function.
+/ Ignores duplicated directory separators in given path name.
+/
+/ Sep 06,'11 R0.09 f_mkfs() supports multiple partition to finish the multiple partition feature.
+/ Added f_fdisk(). (_MULTI_PARTITION = 2)
+/ Aug 27,'12 R0.09a Fixed assertion failure due to OS/2 EA on FAT12/16 volume.
+/ Changed f_open() and f_opendir reject null object pointer to avoid crash.
+/ Changed option name _FS_SHARE to _FS_LOCK.
/---------------------------------------------------------------------------*/
#include "ff.h" /* FatFs configurations and declarations */
---------------------------------------------------------------------------*/
-#if _FATFS != 8085
+#if _FATFS != 4004 /* Revision ID */
#error Wrong include file (ff.h).
#endif
-/* FAT sub-type boundaries */
-/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
-#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
-#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
-
-
-/* Definitions corresponds to multiple sector size */
-#if _MAX_SS == 512 /* Single sector size */
-#define SS(fs) 512U
-#elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */
-#define SS(fs) ((fs)->ssize)
-#else
+/* Definitions on sector size */
+#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
#error Wrong sector size.
#endif
+#if _MAX_SS != 512
+#define SS(fs) ((fs)->ssize) /* Variable sector size */
+#else
+#define SS(fs) 512U /* Fixed sector size */
+#endif
-/* Re-entrancy related */
+/* Reentrancy related */
#if _FS_REENTRANT
#if _USE_LFN == 1
#error Static LFN work area must not be used in re-entrant configuration.
#endif
#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
-
#else
#define ENTER_FF(fs)
#define LEAVE_FF(fs, res) return res
-
#endif
#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
+/* File access control feature */
+#if _FS_LOCK
+#if _FS_READONLY
+#error _FS_LOCK must be 0 on read-only cfg.
+#endif
+typedef struct {
+ FATFS *fs; /* File ID 1, volume (NULL:blank entry) */
+ DWORD clu; /* File ID 2, directory */
+ WORD idx; /* File ID 3, directory index */
+ WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
+} FILESEM;
+#endif
+
+
+
+/* DBCS code ranges and SBCS extend char conversion table */
+
+#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
+#define _DF1S 0x81 /* DBC 1st byte range 1 start */
+#define _DF1E 0x9F /* DBC 1st byte range 1 end */
+#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
+#define _DF2E 0xFC /* DBC 1st byte range 2 end */
+#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
+#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
+#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
+#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
+
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0x80
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 949 /* Korean */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x41
+#define _DS1E 0x5A
+#define _DS2S 0x61
+#define _DS2E 0x7A
+#define _DS3S 0x81
+#define _DS3E 0xFE
+
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0xA1
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 437 /* U.S. (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 720 /* Arabic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 737 /* Greek (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
+ 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 775 /* Baltic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
+ 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
+ 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 857 /* Turkish (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 866 /* Russian (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
+
+#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1253 /* Greek (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
+ 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
+
+#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
+
+#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
+#if _USE_LFN
+#error Cannot use LFN feature without valid code page.
+#endif
+#define _DF1S 0
+
+#else
+#error Unknown code page
+
+#endif
+
+
/* Character code support macros */
#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
#define IsLower(c) (((c)>='a')&&((c)<='z'))
/* Name status flags */
-#define NS 11 /* Offset of name status byte */
+#define NS 11 /* Index of name status byte in fn[] */
#define NS_LOSS 0x01 /* Out of 8.3 format */
#define NS_LFN 0x02 /* Force to create LFN entry */
#define NS_LAST 0x04 /* Last segment */
#define NS_DOT 0x20 /* Dot entry */
+/* FAT sub-type boundaries */
+/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
+#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
+#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
+
+
+/* FatFs refers the members in the FAT structures as byte array instead of
+/ structure member because the structure is not binary compatible between
+/ different platforms */
+
+#define BS_jmpBoot 0 /* Jump instruction (3) */
+#define BS_OEMName 3 /* OEM name (8) */
+#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
+#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
+#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
+#define BPB_NumFATs 16 /* Number of FAT copies (1) */
+#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
+#define BPB_TotSec16 19 /* Volume size [sector] (2) */
+#define BPB_Media 21 /* Media descriptor (1) */
+#define BPB_FATSz16 22 /* FAT size [sector] (2) */
+#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
+#define BPB_NumHeads 26 /* Number of heads (2) */
+#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
+#define BPB_TotSec32 32 /* Volume size [sector] (4) */
+#define BS_DrvNum 36 /* Physical drive number (2) */
+#define BS_BootSig 38 /* Extended boot signature (1) */
+#define BS_VolID 39 /* Volume serial number (4) */
+#define BS_VolLab 43 /* Volume label (8) */
+#define BS_FilSysType 54 /* File system type (1) */
+#define BPB_FATSz32 36 /* FAT size [sector] (4) */
+#define BPB_ExtFlags 40 /* Extended flags (2) */
+#define BPB_FSVer 42 /* File system version (2) */
+#define BPB_RootClus 44 /* Root dir first cluster (4) */
+#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
+#define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */
+#define BS_DrvNum32 64 /* Physical drive number (2) */
+#define BS_BootSig32 66 /* Extended boot signature (1) */
+#define BS_VolID32 67 /* Volume serial number (4) */
+#define BS_VolLab32 71 /* Volume label (8) */
+#define BS_FilSysType32 82 /* File system type (1) */
+#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
+#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
+#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
+#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
+#define MBR_Table 446 /* MBR: Partition table offset (2) */
+#define SZ_PTE 16 /* MBR: Size of a partition table entry */
+#define BS_55AA 510 /* Boot sector signature (2) */
+
+#define DIR_Name 0 /* Short file name (11) */
+#define DIR_Attr 11 /* Attribute (1) */
+#define DIR_NTres 12 /* NT flag (1) */
+#define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */
+#define DIR_CrtTime 14 /* Created time (2) */
+#define DIR_CrtDate 16 /* Created date (2) */
+#define DIR_LstAccDate 18 /* Last accessed date (2) */
+#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
+#define DIR_WrtTime 22 /* Modified time (2) */
+#define DIR_WrtDate 24 /* Modified date (2) */
+#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
+#define DIR_FileSize 28 /* File size (4) */
+#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
+#define LDIR_Attr 11 /* LFN attribute (1) */
+#define LDIR_Type 12 /* LFN type (1) */
+#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
+#define LDIR_FstClusLO 26 /* Filled by zero (0) */
+#define SZ_DIR 32 /* Size of a directory entry */
+#define LLE 0x40 /* Last long entry flag in LDIR_Ord */
+#define DDE 0xE5 /* Deleted directory entry mark in DIR_Name[0] */
+#define NDDE 0x05 /* Replacement of the character collides with DDE */
+
/*------------------------------------------------------------*/
-/* Work area */
+/* Module private work area */
+/*------------------------------------------------------------*/
+/* Note that uninitialized variables with static duration are
+/ zeroed/nulled at start-up. If not, the compiler or start-up
+/ routine is out of ANSI-C standard.
+*/
-#if !_DRIVES
-#error Number of drives must not be 0.
+#if _VOLUMES
+static
+FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
+#else
+#error Number of volumes must not be 0.
#endif
+
static
WORD Fsid; /* File system mount ID */
-static
-FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
#if _FS_RPATH
static
-BYTE Drive; /* Current drive */
+BYTE CurrVol; /* Current drive */
#endif
+#if _FS_LOCK
+static
+FILESEM Files[_FS_LOCK]; /* File lock semaphores */
+#endif
-#if _USE_LFN == 0 /* No LFN */
+#if _USE_LFN == 0 /* No LFN feature */
#define DEF_NAMEBUF BYTE sfn[12]
#define INIT_BUF(dobj) (dobj).fn = sfn
#define FREE_BUF()
-#elif _USE_LFN == 1 /* LFN with static LFN working buffer */
-static WCHAR LfnBuf[_MAX_LFN + 1];
+#elif _USE_LFN == 1 /* LFN feature with static working buffer */
+static WCHAR LfnBuf[_MAX_LFN+1];
#define DEF_NAMEBUF BYTE sfn[12]
#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
#define FREE_BUF()
-#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */
-#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
+#elif _USE_LFN == 2 /* LFN feature with dynamic working buffer on the stack */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
#define FREE_BUF()
-#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */
+#elif _USE_LFN == 3 /* LFN feature with dynamic working buffer on the heap */
#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
/* Copy memory to memory */
static
-void mem_cpy (void* dst, const void* src, int cnt) {
+void mem_cpy (void* dst, const void* src, UINT cnt) {
BYTE *d = (BYTE*)dst;
const BYTE *s = (const BYTE*)src;
#if _WORD_ACCESS == 1
- while (cnt >= sizeof(int)) {
+ while (cnt >= sizeof (int)) {
*(int*)d = *(int*)s;
- d += sizeof(int); s += sizeof(int);
- cnt -= sizeof(int);
+ d += sizeof (int); s += sizeof (int);
+ cnt -= sizeof (int);
}
#endif
while (cnt--)
/* Fill memory */
static
-void mem_set (void* dst, int val, int cnt) {
+void mem_set (void* dst, int val, UINT cnt) {
BYTE *d = (BYTE*)dst;
while (cnt--)
/* Compare memory to memory */
static
-int mem_cmp (const void* dst, const void* src, int cnt) {
+int mem_cmp (const void* dst, const void* src, UINT cnt) {
const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
int r = 0;
FRESULT res /* Result code to be returned */
)
{
- if (res != FR_NOT_ENABLED &&
+ if (fs &&
+ res != FR_NOT_ENABLED &&
res != FR_INVALID_DRIVE &&
res != FR_INVALID_OBJECT &&
res != FR_TIMEOUT) {
/*-----------------------------------------------------------------------*/
-/* File sharing control functions */
+/* File lock control functions */
/*-----------------------------------------------------------------------*/
-#if _FS_SHARE
+#if _FS_LOCK
static
FRESULT chk_lock ( /* Check if the file can be accessed */
UINT i, be;
/* Search file semaphore table */
- for (i = be = 0; i < _FS_SHARE; i++) {
- if (dj->fs->flsem[i].ctr) { /* Existing entry */
- if (dj->fs->flsem[i].clu == dj->sclust && /* The file is found (identified with its location) */
- dj->fs->flsem[i].idx == dj->index) break;
- } else { /* Blank entry */
+ for (i = be = 0; i < _FS_LOCK; i++) {
+ if (Files[i].fs) { /* Existing entry */
+ if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */
+ Files[i].clu == dj->sclust &&
+ Files[i].idx == dj->index) break;
+ } else { /* Blank entry */
be++;
}
}
- if (i == _FS_SHARE) /* The file has not been opened */
- return (be || acc != 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
+ if (i == _FS_LOCK) /* The file is not opened */
+ return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
/* The file has been opened. Reject any open against writing file and all write mode open */
- return (acc || dj->fs->flsem[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+ return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
}
static
-int enq_lock ( /* Check if an entry is available for a new file */
- FATFS* fs /* File system object */
-)
+int enq_lock (void) /* Check if an entry is available for a new file */
{
UINT i;
- for (i = 0; i < _FS_SHARE && fs->flsem[i].ctr; i++) ;
- return (i == _FS_SHARE) ? 0 : 1;
+ for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
+ return (i == _FS_LOCK) ? 0 : 1;
}
UINT i;
- for (i = 0; i < _FS_SHARE; i++) { /* Find the file */
- if (dj->fs->flsem[i].ctr &&
- dj->fs->flsem[i].clu == dj->sclust &&
- dj->fs->flsem[i].idx == dj->index) break;
+ for (i = 0; i < _FS_LOCK; i++) { /* Find the file */
+ if (Files[i].fs == dj->fs &&
+ Files[i].clu == dj->sclust &&
+ Files[i].idx == dj->index) break;
}
- if (i == _FS_SHARE) { /* Not opened. Register it as new. */
- for (i = 0; i < _FS_SHARE && dj->fs->flsem[i].ctr; i++) ;
- if (i == _FS_SHARE) return 0; /* No space to register (int err) */
- dj->fs->flsem[i].clu = dj->sclust;
- dj->fs->flsem[i].idx = dj->index;
+ if (i == _FS_LOCK) { /* Not opened. Register it as new. */
+ for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
+ if (i == _FS_LOCK) return 0; /* No space to register (int err) */
+ Files[i].fs = dj->fs;
+ Files[i].clu = dj->sclust;
+ Files[i].idx = dj->index;
+ Files[i].ctr = 0;
}
- if (acc && dj->fs->flsem[i].ctr) return 0; /* Access violation (int err) */
+ if (acc && Files[i].ctr) return 0; /* Access violation (int err) */
- dj->fs->flsem[i].ctr = acc ? 0x100 : dj->fs->flsem[i].ctr + 1; /* Set semaphore value */
+ Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */
return i + 1;
}
static
FRESULT dec_lock ( /* Decrement file open counter */
- FATFS* fs, /* File system object */
UINT i /* Semaphore index */
)
{
FRESULT res;
- if (--i < _FS_SHARE) {
- n = fs->flsem[i].ctr;
- if (n >= 0x100) n = 0;
+ if (--i < _FS_LOCK) {
+ n = Files[i].ctr;
+ if (n == 0x100) n = 0;
if (n) n--;
- fs->flsem[i].ctr = n;
+ Files[i].ctr = n;
+ if (!n) Files[i].fs = 0;
res = FR_OK;
} else {
res = FR_INT_ERR;
return res;
}
+
+static
+void clear_lock ( /* Clear lock entries of the volume */
+ FATFS *fs
+)
+{
+ UINT i;
+
+ for (i = 0; i < _FS_LOCK; i++) {
+ if (Files[i].fs == fs) Files[i].fs = 0;
+ }
+}
#endif
/* Update FSInfo sector if needed */
if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
fs->winsect = 0;
+ /* Create FSInfo structure */
mem_set(fs->win, 0, 512);
ST_WORD(fs->win+BS_55AA, 0xAA55);
ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
+ /* Write it into the FSInfo sector */
disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
fs->fsi_flag = 0;
}
/* Make sure that no pending write process in the physical drive */
- if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
+ if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK)
res = FR_DISK_ERR;
}
/*-----------------------------------------------------------------------*/
+/* Get sector# from cluster# */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to be converted */
+)
+{
+ clst -= 2;
+ if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
+ return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
/* FAT access - Read value of a FAT entry */
/*-----------------------------------------------------------------------*/
BYTE *p;
- if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
+ if (clst < 2 || clst >= fs->n_fatent) /* Check range */
return 1;
switch (fs->fs_type) {
} else {
switch (fs->fs_type) {
case FS_FAT12 :
- bc = clst; bc += bc / 2;
+ bc = (UINT)clst; bc += bc / 2;
res = move_window(fs, fs->fatbase + (bc / SS(fs)));
if (res != FR_OK) break;
p = &fs->win[bc % SS(fs)];
{
FRESULT res;
DWORD nxt;
-
+#if _USE_ERASE
+ DWORD scl = clst, ecl = clst, rt[2];
+#endif
if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
res = FR_INT_ERR;
fs->free_clust++;
fs->fsi_flag = 1;
}
+#if _USE_ERASE
+ if (ecl + 1 == nxt) { /* Is next cluster contiguous? */
+ ecl = nxt;
+ } else { /* End of contiguous clusters */
+ rt[0] = clust2sect(fs, scl); /* Start sector */
+ rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
+ disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, rt); /* Erase the block */
+ scl = ecl = nxt;
+ }
+#endif
clst = nxt; /* Next cluster */
}
}
)
{
DWORD cs, ncl, scl;
+ FRESULT res;
if (clst == 0) { /* Create a new chain */
if (ncl == scl) return 0; /* No free cluster */
}
- if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "last link" */
- return 0xFFFFFFFF;
- if (clst != 0) { /* Link it to the previous one if needed */
- if (put_fat(fs, clst, ncl))
- return 0xFFFFFFFF;
+ res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
+ if (res == FR_OK && clst != 0) {
+ res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
}
-
- fs->last_clust = ncl; /* Update FSINFO */
- if (fs->free_clust != 0xFFFFFFFF) {
- fs->free_clust--;
- fs->fsi_flag = 1;
+ if (res == FR_OK) {
+ fs->last_clust = ncl; /* Update FSINFO */
+ if (fs->free_clust != 0xFFFFFFFF) {
+ fs->free_clust--;
+ fs->fsi_flag = 1;
+ }
+ } else {
+ ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
}
- return ncl; /* Return new cluster number */
+ return ncl; /* Return new cluster number or error code */
}
#endif /* !_FS_READONLY */
-
/*-----------------------------------------------------------------------*/
-/* Get sector# from cluster# */
+/* FAT handling - Convert offset into cluster with link map table */
/*-----------------------------------------------------------------------*/
-
-DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
- FATFS *fs, /* File system object */
- DWORD clst /* Cluster# to be converted */
+#if _USE_FASTSEEK
+static
+DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
+ FIL* fp, /* Pointer to the file object */
+ DWORD ofs /* File offset to be converted to cluster# */
)
{
- clst -= 2;
- if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
- return clst * fs->csize + fs->database;
-}
+ DWORD cl, ncl, *tbl;
+
+ tbl = fp->cltbl + 1; /* Top of CLMT */
+ cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
+ for (;;) {
+ ncl = *tbl++; /* Number of cluters in the fragment */
+ if (!ncl) return 0; /* End of table? (error) */
+ if (cl < ncl) break; /* In this fragment? */
+ cl -= ncl; tbl++; /* Next fragment */
+ }
+ return cl + *tbl; /* Return the cluster number */
+}
+#endif /* _USE_FASTSEEK */
static
FRESULT dir_sdi (
DIR *dj, /* Pointer to directory object */
- WORD idx /* Directory index number */
+ WORD idx /* Index of directory table */
)
{
DWORD clst;
if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
clst = dj->fs->dirbase;
- if (clst == 0) { /* Static table */
+ if (clst == 0) { /* Static table (root-dir in FAT12/16) */
dj->clust = clst;
if (idx >= dj->fs->n_rootdir) /* Index is out of range */
return FR_INT_ERR;
- dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32); /* Sector# */
+ dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
}
- else { /* Dynamic table */
- ic = SS(dj->fs) / 32 * dj->fs->csize; /* Entries per cluster */
+ else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
+ ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */
while (idx >= ic) { /* Follow cluster chain */
clst = get_fat(dj->fs, clst); /* Get next cluster */
if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
idx -= ic;
}
dj->clust = clst;
- dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32); /* Sector# */
+ dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
}
- dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */
+ dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */
return FR_OK; /* Seek succeeded */
}
/*-----------------------------------------------------------------------*/
-/* Directory handling - Move directory index next */
+/* Directory handling - Move directory table index next */
/*-----------------------------------------------------------------------*/
static
WORD i;
+ stretch = stretch; /* To suppress warning on read-only cfg. */
i = dj->index + 1;
if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
return FR_NO_FILE;
- if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */
+ if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */
dj->sect++; /* Next sector */
if (dj->clust == 0) { /* Static table */
return FR_NO_FILE;
}
else { /* Dynamic table */
- if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
+ if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
if (clst <= 1) return FR_INT_ERR;
if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
}
dj->index = i;
- dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;
+ dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR;
return FR_OK;
}
/*-----------------------------------------------------------------------*/
+/* Directory handling - Load/Store start cluster number */
+/*-----------------------------------------------------------------------*/
+
+static
+DWORD ld_clust (
+ FATFS *fs, /* Pointer to the fs object */
+ BYTE *dir /* Pointer to the directory entry */
+)
+{
+ DWORD cl;
+
+ cl = LD_WORD(dir+DIR_FstClusLO);
+ if (fs->fs_type == FS_FAT32)
+ cl |= (DWORD)LD_WORD(dir+DIR_FstClusHI) << 16;
+
+ return cl;
+}
+
+
+#if !_FS_READONLY
+static
+void st_clust (
+ BYTE *dir, /* Pointer to the directory entry */
+ DWORD cl /* Value to be set */
+)
+{
+ ST_WORD(dir+DIR_FstClusLO, cl);
+ ST_WORD(dir+DIR_FstClusHI, cl >> 16);
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
/*-----------------------------------------------------------------------*/
#if _USE_LFN
BYTE *dir /* Pointer to the directory entry containing a part of LFN */
)
{
- int i, s;
+ UINT i, s;
WCHAR wc, uc;
- i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13; /* Get offset in the LFN buffer */
+ i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
s = 0; wc = 1;
do {
uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
}
} while (++s < 13); /* Repeat until all chars in the entry are checked */
- if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */
+ if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
return 0;
return 1; /* The part of LFN matched */
BYTE *dir /* Pointer to the directory entry */
)
{
- int i, s;
+ UINT i, s;
WCHAR wc, uc;
}
} while (++s < 13); /* Read all character in the entry */
- if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */
+ if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
lfnbuf[i] = 0;
}
BYTE sum /* SFN sum */
)
{
- int i, s;
+ UINT i, s;
WCHAR wc;
ST_WORD(dir+LfnOfs[s], wc); /* Put it */
if (!wc) wc = 0xFFFF; /* Padding chars following last char */
} while (++s < 13);
- if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40; /* Bottom LFN part is the start of LFN sequence */
+ if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE; /* Bottom LFN part is the start of LFN sequence */
dir[LDIR_Ord] = ord; /* Set the LFN order */
}
)
{
BYTE ns[8], c;
- int i, j;
+ UINT i, j;
mem_cpy(dst, src, 11);
do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn);
}
- /* itoa */
+ /* itoa (hexdecimal) */
i = 7;
do {
c = (seq % 16) + '0';
)
{
BYTE sum = 0;
- int n = 11;
+ UINT n = 11;
do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
return sum;
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
#if _USE_LFN /* LFN configuration */
a = dir[DIR_Attr] & AM_MASK;
- if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
ord = 0xFF;
} else {
if (a == AM_LFN) { /* An LFN entry is found */
if (dj->lfn) {
- if (c & 0x40) { /* Is it start of LFN sequence? */
+ if (c & LLE) { /* Is it start of LFN sequence? */
sum = dir[LDIR_Chksum];
- c &= 0xBF; ord = c; /* LFN start order */
+ c &= ~LLE; ord = c; /* LFN start order */
dj->lfn_idx = dj->index;
}
/* Check validity of the LFN entry and compare it with given name */
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
#if _USE_LFN /* LFN configuration */
a = dir[DIR_Attr] & AM_MASK;
- if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ if (c == DDE || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
ord = 0xFF;
} else {
if (a == AM_LFN) { /* An LFN entry is found */
- if (c & 0x40) { /* Is it start of LFN sequence? */
+ if (c & LLE) { /* Is it start of LFN sequence? */
sum = dir[LDIR_Chksum];
- c &= 0xBF; ord = c;
+ c &= ~LLE; ord = c;
dj->lfn_idx = dj->index;
}
/* Check LFN validity and capture it */
}
}
#else /* Non LFN configuration */
- if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
+ if (c != DDE && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
break;
#endif
res = dir_next(dj, 0); /* Next entry */
fn = dj->fn; lfn = dj->lfn;
mem_cpy(sn, fn, 12);
- if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */
+ if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */
+ return FR_INVALID_NAME;
if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
res = move_window(dj->fs, dj->sect);
if (res != FR_OK) break;
c = *dj->dir; /* Check the entry status */
- if (c == 0xE5 || c == 0) { /* Is it a blank entry? */
+ if (c == DDE || c == 0) { /* Is it a blank entry? */
if (n == 0) is = dj->index; /* First index of the contiguous entry */
if (++n == ne) break; /* A contiguous entry that required count is found */
} else {
res = move_window(dj->fs, dj->sect);
if (res != FR_OK) break;
c = *dj->dir;
- if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */
+ if (c == DDE || c == 0) break; /* Is it a blank entry? */
res = dir_next(dj, 1); /* Next entry with table stretch */
} while (res == FR_OK);
}
res = move_window(dj->fs, dj->sect);
if (res == FR_OK) {
dir = dj->dir;
- mem_set(dir, 0, 32); /* Clean the entry */
+ mem_set(dir, 0, SZ_DIR); /* Clean the entry */
mem_cpy(dir, dj->fn, 11); /* Put SFN */
#if _USE_LFN
dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
do {
res = move_window(dj->fs, dj->sect);
if (res != FR_OK) break;
- *dj->dir = 0xE5; /* Mark the entry "deleted" */
+ *dj->dir = DDE; /* Mark the entry "deleted" */
dj->fs->wflag = 1;
if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
res = dir_next(dj, 0); /* Next entry */
if (res == FR_OK) {
res = move_window(dj->fs, dj->sect);
if (res == FR_OK) {
- *dj->dir = 0xE5; /* Mark the entry "deleted" */
+ *dj->dir = DDE; /* Mark the entry "deleted" */
dj->fs->wflag = 1;
}
}
#if _USE_LFN /* LFN configuration */
BYTE b, cf;
WCHAR w, *lfn;
- int i, ni, si, di;
+ UINT i, ni, si, di;
const TCHAR *p;
/* Create LFN in Unicode */
- si = di = 0;
- p = *path;
+ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
lfn = dj->lfn;
+ si = di = 0;
for (;;) {
w = p[si++]; /* Get a character */
if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
return FR_INVALID_NAME;
#if !_LFN_UNICODE
w &= 0xFF;
- if (IsDBCS1(w)) { /* If it is a DBC 1st byte */
- b = p[si++]; /* Get 2nd byte */
- if (!IsDBCS2(b)) /* Reject invalid code for DBC */
- return FR_INVALID_NAME;
- w = (w << 8) + b;
+ if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
+ b = (BYTE)p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(b))
+ return FR_INVALID_NAME; /* Reject invalid sequence */
+ w = (w << 8) + b; /* Create a DBC */
}
- w = ff_convert(w, 1); /* Convert OEM to Unicode */
+ w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
if (!w) return FR_INVALID_NAME; /* Reject invalid code */
#endif
if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
*path = &p[si]; /* Return pointer to the next segment */
cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
#if _FS_RPATH
- if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */
- (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {
+ if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */
+ (di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {
lfn[di] = 0;
for (i = 0; i < 11; i++)
dj->fn[i] = (i < di) ? '.' : ' ';
}
#endif
while (di) { /* Strip trailing spaces and dots */
- w = lfn[di - 1];
+ w = lfn[di-1];
if (w != ' ' && w != '.') break;
di--;
}
cf |= NS_LFN; /* Force create LFN entry */
}
- if (_DF1S && w >= 0x100) { /* Double byte char */
+ if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */
if (i >= ni - 1) {
cf |= NS_LOSS | NS_LFN; i = ni; continue;
}
dj->fn[i++] = (BYTE)(w >> 8);
} else { /* Single byte char */
- if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
- w = '_'; cf |= NS_LOSS | NS_LFN; /* Lossy conversion */
+ if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
+ w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
} else {
if (IsUpper(w)) { /* ASCII large capital */
b |= 2;
dj->fn[i++] = (BYTE)w;
}
- if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05; /* If the first char collides with deleted mark, replace it with 0x05 */
+ if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */
if (ni == 8) b <<= 2;
if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
#else /* Non-LFN configuration */
BYTE b, c, d, *sfn;
- int ni, si, i;
+ UINT ni, si, i;
const char *p;
/* Create file name in directory form */
+ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
sfn = dj->fn;
mem_set(sfn, ' ', 11);
si = i = b = 0; ni = 8;
- p = *path;
#if _FS_RPATH
if (p[si] == '.') { /* Is this a dot entry? */
for (;;) {
i = 8; ni = 11;
b <<= 2; continue;
}
- if (c >= 0x80) { /* Extended char */
+ if (c >= 0x80) { /* Extended char? */
+ b |= 3; /* Eliminate NT flag */
#ifdef _EXCVT
- c = excvt[c - 0x80]; /* Convert extend char (SBCS) */
+ c = excvt[c - 0x80]; /* Upper conversion (SBCS) */
#else
- b |= 3; /* Eliminate NT flag if extended char is exist */
#if !_DF1S /* ASCII only cfg */
return FR_INVALID_NAME;
#endif
#endif
}
- if (IsDBCS1(c)) { /* DBC 1st byte? */
+ if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
d = (BYTE)p[si++]; /* Get 2nd byte */
if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
return FR_INVALID_NAME;
sfn[i++] = c;
sfn[i++] = d;
} else { /* Single byte code */
- if (chk_chr("\"*+,:<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
+ if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
return FR_INVALID_NAME;
if (IsUpper(c)) { /* ASCII large capital? */
b |= 2;
c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
if (!i) return FR_INVALID_NAME; /* Reject nul string */
- if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */
+ if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */
if (ni == 8) b <<= 2;
if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
FILINFO *fno /* Pointer to the file information to be filled */
)
{
- int i;
+ UINT i;
BYTE nt, *dir;
TCHAR *p, c;
for (i = 0; i < 8; i++) { /* Copy name body */
c = dir[i];
if (c == ' ') break;
- if (c == 0x05) c = (TCHAR)0xE5;
+ if (c == NDDE) c = (TCHAR)DDE;
if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
#if _LFN_UNICODE
- if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i + 1]))
+ if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1]))
c = (c << 8) | dir[++i];
c = ff_convert(c, 1);
if (!c) c = '?';
if (c == ' ') break;
if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
#if _LFN_UNICODE
- if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i + 1]))
+ if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1]))
c = (c << 8) | dir[++i];
c = ff_convert(c, 1);
if (!c) c = '?';
fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
}
- *p = 0;
+ *p = 0; /* Terminate SFN str by a \0 */
#if _USE_LFN
- if (fno->lfname) {
+ if (fno->lfname && fno->lfsize) {
TCHAR *tp = fno->lfname;
WCHAR w, *lfn;
#if !_LFN_UNICODE
w = ff_convert(w, 0); /* Unicode -> OEM conversion */
if (!w) { i = 0; break; } /* Could not convert, no LFN */
- if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC */
+ if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
tp[i++] = (TCHAR)(w >> 8);
#endif
- if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */
+ if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */
tp[i++] = (TCHAR)w;
}
}
- tp[i] = 0; /* Terminator */
+ tp[i] = 0; /* Terminate the LFN str by a \0 */
}
#endif
}
if ((UINT)*path < ' ') { /* Nul path means the start directory itself */
res = dir_sdi(dj, 0);
dj->dir = 0;
-
} else { /* Follow path */
for (;;) {
res = create_name(dj, &path); /* Get a segment */
if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
res = FR_NO_PATH; break;
}
- dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ dj->sclust = ld_clust(dj->fs, dir);
}
}
/*-----------------------------------------------------------------------*/
-/* Load boot record and check if it is an FAT boot record */
+/* Load a sector and check if it is an FAT Volume Boot Record */
/*-----------------------------------------------------------------------*/
static
-BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */
+BYTE check_fs ( /* 0:FAT-VBR, 1:Any BR but not FAT, 2:Not a BR, 3:Disk error */
FATFS *fs, /* File system object */
DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
)
/*-----------------------------------------------------------------------*/
-/* Make sure that the file system is valid */
+/* Check if the file system object is valid or not */
/*-----------------------------------------------------------------------*/
static
FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
FATFS **rfs, /* Pointer to pointer to the found file system object */
- BYTE chk_wp /* !=0: Check media write protection for write access */
+ BYTE wmode /* !=0: Check write protection for write access */
)
{
- BYTE fmt, b, *tbl;
+ BYTE fmt, b, pi, *tbl;
UINT vol;
DSTATUS stat;
DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
const TCHAR *p = *path;
FATFS *fs;
+
/* Get logical drive number from the path name */
- vol = p[0] - '0'; /* Is there a drive number? */
- if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
- p += 2; *path = p; /* Return pointer to the path name */
- } else { /* No drive number is given */
+ vol = p[0] - '0'; /* Is there a drive number? */
+ if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
+ p += 2; *path = p; /* Return pointer to the path name */
+ } else { /* No drive number is given */
#if _FS_RPATH
- vol = Drive; /* Use current drive */
+ vol = CurrVol; /* Use current drive */
#else
- vol = 0; /* Use drive 0 */
+ vol = 0; /* Use drive 0 */
#endif
}
- /* Check if the logical drive is valid or not */
- if (vol >= _DRIVES) /* Is the drive number valid? */
+ /* Check if the file system object is valid or not */
+ *rfs = 0;
+ if (vol >= _VOLUMES) /* Is the drive number valid? */
return FR_INVALID_DRIVE;
- *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */
- if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
+ fs = FatFs[vol]; /* Get corresponding file system object */
+ if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
- ENTER_FF(fs); /* Lock file system */
+ ENTER_FF(fs); /* Lock file system */
- if (fs->fs_type) { /* If the logical drive has been mounted */
+ *rfs = fs; /* Return pointer to the corresponding file system object */
+ if (fs->fs_type) { /* If the volume has been mounted */
stat = disk_status(fs->drv);
- if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
-#if !_FS_READONLY
- if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
+ if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
+ if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check write protection if needed */
return FR_WRITE_PROTECTED;
-#endif
- return FR_OK; /* The file system object is valid */
+ return FR_OK; /* The file system object is valid */
}
}
- /* The logical drive must be mounted. Following code attempts to mount the volume (initialize the file system object) */
+ /* The file system object is not valid. */
+ /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
fs->fs_type = 0; /* Clear the file system object */
- fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
- stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
- if (stat & STA_NOINIT) /* Check if the drive is ready */
- return FR_NOT_READY;
-#if _MAX_SS != 512 /* Get disk sector size if needed */
- if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
- return FR_NO_FILESYSTEM;
-#endif
-#if !_FS_READONLY
- if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
+ fs->drv = LD2PD(vol); /* Bind the logical drive and a physical drive */
+ stat = disk_initialize(fs->drv); /* Initialize the physical drive */
+ if (stat & STA_NOINIT) /* Check if the initialization succeeded */
+ return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */
+ if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */
return FR_WRITE_PROTECTED;
+#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
+ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
+ return FR_DISK_ERR;
#endif
- /* Search FAT partition on the drive (Supports only generic partitions, FDISK and SFD) */
- fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */
- if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */
- /* Check the partition listed in top of the partition table */
- tbl = &fs->win[MBR_Table + LD2PT(vol) * 16]; /* Partition table */
- if (tbl[4]) { /* Is the partition existing? */
- bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
- fmt = check_fs(fs, bsect); /* Check the partition */
+ /* Search FAT partition on the drive. Supports only generic partitions, FDISK and SFD. */
+ fmt = check_fs(fs, bsect = 0); /* Load sector 0 and check if it is an FAT-VBR (in SFD) */
+ if (LD2PT(vol) && !fmt) fmt = 1; /* Force non-SFD if the volume is forced partition */
+ if (fmt == 1) { /* Not an FAT-VBR, the physical drive can be partitioned */
+ /* Check the partition listed in the partition table */
+ pi = LD2PT(vol);
+ if (pi) pi--;
+ tbl = &fs->win[MBR_Table + pi * SZ_PTE];/* Partition table */
+ if (tbl[4]) { /* Is the partition existing? */
+ bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
+ fmt = check_fs(fs, bsect); /* Check the partition */
}
}
if (fmt == 3) return FR_DISK_ERR;
- if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
+ if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
- /* Following code initializes the file system object */
+ /* An FAT volume is found. Following code initializes the file system object */
if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
return FR_NO_FILESYSTEM;
fasize *= b; /* Number of sectors for FAT area */
fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
- if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be 1,2,4...128) */
+ if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
- if (fs->n_rootdir % (SS(fs) / 32)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
+ if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
/* Determine the FAT sub type */
- sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / 32); /* RSV+FAT+DIR */
+ sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */
if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
}
- if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (FAT size must not be less than FAT sectors */
+ if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */
return FR_NO_FILESYSTEM;
#if !_FS_READONLY
#if _FS_RPATH
fs->cdir = 0; /* Current directory (root dir) */
#endif
-#if _FS_SHARE /* Clear file lock semaphores */
- for (vol = 0; vol < _FS_SHARE; vol++)
- fs->flsem[vol].ctr = 0;
+#if _FS_LOCK /* Clear file lock semaphores */
+ clear_lock(fs);
#endif
return FR_OK;
static
FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
- FATFS *fs, /* Pointer to the file system object */
- WORD id /* Member id of the target object to be checked */
+ void* obj /* Pointer to the object FIL/DIR to check validity */
)
{
- if (!fs || !fs->fs_type || fs->id != id)
+ FIL *fil;
+
+
+ fil = (FIL*)obj; /* Assuming offset of fs and id in the FIL/DIR is identical */
+ if (!fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id)
return FR_INVALID_OBJECT;
- ENTER_FF(fs); /* Lock file system */
+ ENTER_FF(fil->fs); /* Lock file system */
- if (disk_status(fs->drv) & STA_NOINIT)
+ if (disk_status(fil->fs->drv) & STA_NOINIT)
return FR_NOT_READY;
return FR_OK;
FATFS *rfs;
- if (vol >= _DRIVES) /* Check if the drive number is valid */
+ if (vol >= _VOLUMES) /* Check if the drive number is valid */
return FR_INVALID_DRIVE;
- rfs = FatFs[vol]; /* Get current fs object */
+ rfs = FatFs[vol]; /* Get current fs object */
if (rfs) {
-#if _FS_REENTRANT /* Discard sync object of the current volume */
+#if _FS_LOCK
+ clear_lock(rfs);
+#endif
+#if _FS_REENTRANT /* Discard sync object of the current volume */
if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
#endif
- rfs->fs_type = 0; /* Clear old fs object */
+ rfs->fs_type = 0; /* Clear old fs object */
}
if (fs) {
- fs->fs_type = 0; /* Clear new fs object */
-#if _FS_REENTRANT /* Create sync object for the new volume */
+ fs->fs_type = 0; /* Clear new fs object */
+#if _FS_REENTRANT /* Create sync object for the new volume */
if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
#endif
}
- FatFs[vol] = fs; /* Register new fs object */
+ FatFs[vol] = fs; /* Register new fs object */
return FR_OK;
}
DEF_NAMEBUF;
+ if (!fp) return FR_INVALID_OBJECT;
fp->fs = 0; /* Clear file object */
#if !_FS_READONLY
mode &= FA_READ;
res = chk_mounted(&path, &dj.fs, 0);
#endif
- INIT_BUF(dj);
- if (res == FR_OK)
+ if (res == FR_OK) {
+ INIT_BUF(dj);
res = follow_path(&dj, path); /* Follow the file path */
- dir = dj.dir;
-
+ dir = dj.dir;
#if !_FS_READONLY /* R/W configuration */
- if (res == FR_OK) {
- if (!dir) /* Current dir itself */
- res = FR_INVALID_NAME;
-#if _FS_SHARE
- else
- res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (res == FR_OK) {
+ if (!dir) /* Current dir itself */
+ res = FR_INVALID_NAME;
+#if _FS_LOCK
+ else
+ res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
#endif
- }
- /* Create or Open a file */
- if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
- DWORD dw, cl;
-
- if (res != FR_OK) { /* No file, create new */
- if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
-#if _FS_SHARE
- res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
+ }
+ /* Create or Open a file */
+ if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
+ DWORD dw, cl;
+
+ if (res != FR_OK) { /* No file, create new */
+ if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
+#if _FS_LOCK
+ res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
#else
- res = dir_register(&dj);
+ res = dir_register(&dj);
#endif
- mode |= FA_CREATE_ALWAYS;
- dir = dj.dir; /* New entry */
- }
- else { /* Any object is already existing */
- if (mode & FA_CREATE_NEW) { /* Cannot create new */
- res = FR_EXIST;
- } else {
- if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) /* Cannot overwrite it (R/O or DIR) */
+ mode |= FA_CREATE_ALWAYS; /* File is created */
+ dir = dj.dir; /* New entry */
+ }
+ else { /* Any object is already existing */
+ if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
res = FR_DENIED;
+ } else {
+ if (mode & FA_CREATE_NEW) /* Cannot create as new file */
+ res = FR_EXIST;
+ }
}
- }
- if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
- dw = get_fattime(); /* Created time */
- ST_DWORD(dir+DIR_CrtTime, dw);
- dir[DIR_Attr] = 0; /* Reset attribute */
- ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
- cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
- ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
- ST_WORD(dir+DIR_FstClusLO, 0);
- dj.fs->wflag = 1;
- if (cl) { /* Remove the cluster chain if exist */
- dw = dj.fs->winsect;
- res = remove_chain(dj.fs, cl);
- if (res == FR_OK) {
- dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
- res = move_window(dj.fs, dw);
+ if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
+ dw = get_fattime(); /* Created time */
+ ST_DWORD(dir+DIR_CrtTime, dw);
+ dir[DIR_Attr] = 0; /* Reset attribute */
+ ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
+ cl = ld_clust(dj.fs, dir); /* Get start cluster */
+ st_clust(dir, 0); /* cluster = 0 */
+ dj.fs->wflag = 1;
+ if (cl) { /* Remove the cluster chain if exist */
+ dw = dj.fs->winsect;
+ res = remove_chain(dj.fs, cl);
+ if (res == FR_OK) {
+ dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
+ res = move_window(dj.fs, dw);
+ }
}
}
}
- }
- else { /* Open an existing file */
- if (res == FR_OK) { /* Follow succeeded */
- if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
- res = FR_NO_FILE;
- } else {
- if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
- res = FR_DENIED;
+ else { /* Open an existing file */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
+ res = FR_NO_FILE;
+ } else {
+ if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+ res = FR_DENIED;
+ }
}
}
- }
- if (res == FR_OK) {
- if (mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW))
- mode |= FA__WRITTEN; /* Set file changed flag */
- fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
- fp->dir_ptr = dir;
-#if _FS_SHARE
- fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
- if (!fp->lockid) res = FR_INT_ERR;
+ if (res == FR_OK) {
+ if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
+ mode |= FA__WRITTEN;
+ fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
+ fp->dir_ptr = dir;
+#if _FS_LOCK
+ fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (!fp->lockid) res = FR_INT_ERR;
#endif
- }
+ }
#else /* R/O configuration */
- if (res == FR_OK) { /* Follow succeeded */
- if (!dir) { /* Current dir itself */
- res = FR_INVALID_NAME;
- } else {
- if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
- res = FR_NO_FILE;
+ if (res == FR_OK) { /* Follow succeeded */
+ dir = dj.dir;
+ if (!dir) { /* Current dir itself */
+ res = FR_INVALID_NAME;
+ } else {
+ if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
+ res = FR_NO_FILE;
+ }
}
- }
#endif
- FREE_BUF();
+ FREE_BUF();
- if (res == FR_OK) {
- fp->flag = mode; /* File access mode */
- fp->org_clust = /* File start cluster */
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
- fp->fptr = 0; /* File pointer */
- fp->dsect = 0;
+ if (res == FR_OK) {
+ fp->flag = mode; /* File access mode */
+ fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */
+ fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
+ fp->fptr = 0; /* File pointer */
+ fp->dsect = 0;
#if _USE_FASTSEEK
- fp->cltbl = 0; /* No cluster link map table */
+ fp->cltbl = 0; /* Normal seek mode */
#endif
- fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
+ fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
+ }
}
LEAVE_FF(dj.fs, res);
BYTE csect, *rbuff = buff;
- *br = 0; /* Initialize byte counter */
+ *br = 0; /* Clear read byte counter */
- res = validate(fp->fs, fp->id); /* Check validity of the object */
+ res = validate(fp); /* Check validity */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check abort flag */
+ if (fp->flag & FA__ERROR) /* Aborted file? */
LEAVE_FF(fp->fs, FR_INT_ERR);
- if (!(fp->flag & FA_READ)) /* Check access mode */
+ if (!(fp->flag & FA_READ)) /* Check access mode */
LEAVE_FF(fp->fs, FR_DENIED);
remain = fp->fsize - fp->fptr;
- if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
- for ( ; btr; /* Repeat until all data transferred */
+ for ( ; btr; /* Repeat until all data read */
rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
- if (!csect) { /* On the cluster boundary? */
- clst = (fp->fptr == 0) ? /* On the top of the file? */
- fp->org_clust : get_fat(fp->fs, fp->curr_clust);
- if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->sclust; /* Follow from the origin */
+ } else { /* Middle or end of the file */
+#if _USE_FASTSEEK
+ if (fp->cltbl)
+ clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
+ else
+#endif
+ clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
+ }
+ if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
+ fp->clust = clst; /* Update current cluster */
}
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
+ sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
sect += csect;
- cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
- if (cc) { /* Read maximum contiguous sectors directly */
- if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Read maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
cc = fp->fs->csize - csect;
if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
-#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
+#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
#if _FS_TINY
if (fp->fs->wflag && fp->fs->winsect - sect < cc)
mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
#endif
#endif
- rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
continue;
}
#if !_FS_TINY
+ if (fp->dsect != sect) { /* Load data sector if not in cache */
#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */
- if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
#endif
- if (fp->dsect != sect) { /* Fill sector buffer with file data */
- if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
+ if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
ABORT(fp->fs, FR_DISK_ERR);
}
#endif
fp->dsect = sect;
}
- rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
+ rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
if (rcnt > btr) rcnt = btr;
#if _FS_TINY
- if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
ABORT(fp->fs, FR_DISK_ERR);
mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
#else
BYTE csect;
- *bw = 0; /* Initialize byte counter */
+ *bw = 0; /* Clear write byte counter */
- res = validate(fp->fs, fp->id); /* Check validity of the object */
+ res = validate(fp); /* Check validity */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check abort flag */
+ if (fp->flag & FA__ERROR) /* Aborted file? */
LEAVE_FF(fp->fs, FR_INT_ERR);
- if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
LEAVE_FF(fp->fs, FR_DENIED);
- if (fp->fsize + btw < fp->fsize) btw = 0; /* File size cannot reach 4GB */
+ if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */
- for ( ; btw; /* Repeat until all data transferred */
+ for ( ; btw; /* Repeat until all data written */
wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
- if (!csect) { /* On the cluster boundary? */
- if (fp->fptr == 0) { /* On the top of the file? */
- clst = fp->org_clust; /* Follow from the origin */
- if (clst == 0) /* When there is no cluster chain, */
- fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
- } else { /* Middle or end of the file */
- clst = create_chain(fp->fs, fp->curr_clust); /* Follow or stretch cluster chain */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->sclust; /* Follow from the origin */
+ if (clst == 0) /* When no cluster is allocated, */
+ fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
+ } else { /* Middle or end of the file */
+#if _USE_FASTSEEK
+ if (fp->cltbl)
+ clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
+ else
+#endif
+ clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
}
- if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
+ if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
+ fp->clust = clst; /* Update current cluster */
}
#if _FS_TINY
- if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */
+ if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */
ABORT(fp->fs, FR_DISK_ERR);
#else
- if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */
+ if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
#endif
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
+ sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
sect += csect;
- cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
- if (cc) { /* Write maximum contiguous sectors directly */
- if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Write maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
cc = fp->fs->csize - csect;
if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
#if _FS_TINY
- if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
+ if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
fp->fs->wflag = 0;
}
#else
- if (fp->dsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
+ if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
fp->flag &= ~FA__DIRTY;
}
#endif
- wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
continue;
}
#if _FS_TINY
- if (fp->fptr >= fp->fsize) { /* Avoid silly buffer filling at growing edge */
+ if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
fp->fs->winsect = sect;
}
#else
- if (fp->dsect != sect) { /* Fill sector buffer with file data */
+ if (fp->dsect != sect) { /* Fill sector cache with file data */
if (fp->fptr < fp->fsize &&
disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
#endif
fp->dsect = sect;
}
- wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
+ wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
if (wcnt > btw) wcnt = btw;
#if _FS_TINY
- if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
ABORT(fp->fs, FR_DISK_ERR);
mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
fp->fs->wflag = 1;
}
if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
- fp->flag |= FA__WRITTEN; /* Set file changed flag */
+ fp->flag |= FA__WRITTEN; /* Set file change flag */
LEAVE_FF(fp->fs, FR_OK);
}
BYTE *dir;
- res = validate(fp->fs, fp->id); /* Check validity of the object */
+ res = validate(fp); /* Check validity of the object */
if (res == FR_OK) {
if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
#if !_FS_TINY /* Write-back dirty buffer */
dir = fp->dir_ptr;
dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
- ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */
- ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
+ st_clust(dir, fp->sclust); /* Update start cluster */
tim = get_fattime(); /* Update updated time */
ST_DWORD(dir+DIR_WrtTime, tim);
+ ST_WORD(dir+DIR_LstAccDate, 0);
fp->flag &= ~FA__WRITTEN;
fp->fs->wflag = 1;
res = sync(fp->fs);
{
FRESULT res;
-#if _FS_READONLY
- FATFS *fs = fp->fs;
- res = validate(fs, fp->id);
- if (res == FR_OK) fp->fs = 0; /* Discard file object */
- LEAVE_FF(fs, res);
+#if _FS_READONLY
+ res = validate(fp);
+ {
+#if _FS_REENTRANT
+ FATFS *fs = fp->fs;
+#endif
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
+ LEAVE_FF(fs, res);
+ }
#else
res = f_sync(fp); /* Flush cached data */
-#if _FS_SHARE
+#if _FS_LOCK
if (res == FR_OK) { /* Decrement open counter */
#if _FS_REENTRANT
- res = validate(fp->fs, fp->id);
+ FATFS *fs = fp->fs;;
+ res = validate(fp);
if (res == FR_OK) {
- res = dec_lock(fp->fs, fp->lockid);
- unlock_fs(fp->fs, FR_OK);
+ res = dec_lock(fp->lockid);
+ unlock_fs(fs, FR_OK);
}
#else
- res = dec_lock(fp->fs, fp->lockid);
+ res = dec_lock(fp->lockid);
#endif
}
#endif
/*-----------------------------------------------------------------------*/
-/* Change Current Drive/Directory */
+/* Current Drive/Directory Handlings */
/*-----------------------------------------------------------------------*/
-#if _FS_RPATH
+#if _FS_RPATH >= 1
FRESULT f_chdrive (
BYTE drv /* Drive number */
)
{
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+ if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
- Drive = drv;
+ CurrVol = drv;
return FR_OK;
}
-
FRESULT f_chdir (
const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
DIR dj;
- BYTE *dir;
DEF_NAMEBUF;
res = follow_path(&dj, path); /* Follow the path */
FREE_BUF();
if (res == FR_OK) { /* Follow completed */
- dir = dj.dir; /* Pointer to the entry */
- if (!dir) {
+ if (!dj.dir) {
dj.fs->cdir = dj.sclust; /* Start directory itself */
} else {
- if (dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
- dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
+ dj.fs->cdir = ld_clust(dj.fs, dj.dir);
else
res = FR_NO_PATH; /* Reached but a file */
}
LEAVE_FF(dj.fs, res);
}
+
+#if _FS_RPATH >= 2
+FRESULT f_getcwd (
+ TCHAR *path, /* Pointer to the directory path */
+ UINT sz_path /* Size of path */
+)
+{
+ FRESULT res;
+ DIR dj;
+ UINT i, n;
+ DWORD ccl;
+ TCHAR *tp;
+ FILINFO fno;
+ DEF_NAMEBUF;
+
+
+ *path = 0;
+ res = chk_mounted((const TCHAR**)&path, &dj.fs, 0); /* Get current volume */
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ i = sz_path; /* Bottom of buffer (dir stack base) */
+ dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */
+ while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */
+ res = dir_sdi(&dj, 1); /* Get parent dir */
+ if (res != FR_OK) break;
+ res = dir_read(&dj);
+ if (res != FR_OK) break;
+ dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent dir */
+ res = dir_sdi(&dj, 0);
+ if (res != FR_OK) break;
+ do { /* Find the entry links to the child dir */
+ res = dir_read(&dj);
+ if (res != FR_OK) break;
+ if (ccl == ld_clust(dj.fs, dj.dir)) break; /* Found the entry */
+ res = dir_next(&dj, 0);
+ } while (res == FR_OK);
+ if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
+ if (res != FR_OK) break;
+#if _USE_LFN
+ fno.lfname = path;
+ fno.lfsize = i;
#endif
+ get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */
+ tp = fno.fname;
+ if (_USE_LFN && *path) tp = path;
+ for (n = 0; tp[n]; n++) ;
+ if (i < n + 3) {
+ res = FR_NOT_ENOUGH_CORE; break;
+ }
+ while (n) path[--i] = tp[--n];
+ path[--i] = '/';
+ }
+ tp = path;
+ if (res == FR_OK) {
+ *tp++ = '0' + CurrVol; /* Put drive number */
+ *tp++ = ':';
+ if (i == sz_path) { /* Root-dir */
+ *tp++ = '/';
+ } else { /* Sub-dir */
+ do /* Add stacked path str */
+ *tp++ = path[i++];
+ while (i < sz_path);
+ }
+ }
+ *tp = 0;
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+#endif /* _FS_RPATH >= 2 */
+#endif /* _FS_RPATH >= 1 */
FRESULT res;
- res = validate(fp->fs, fp->id); /* Check validity of the object */
+ res = validate(fp); /* Check validity of the object */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
if (fp->flag & FA__ERROR) /* Check abort flag */
LEAVE_FF(fp->fs, FR_INT_ERR);
#if _USE_FASTSEEK
if (fp->cltbl) { /* Fast seek */
- DWORD cl, pcl, ncl, tcl, dsc, tlen, *tbl = fp->cltbl;
- BYTE csc;
+ DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
- tlen = *tbl++;
- if (ofs == CREATE_LINKMAP) { /* Create link map table */
- cl = fp->org_clust;
+ if (ofs == CREATE_LINKMAP) { /* Create CLMT */
+ tbl = fp->cltbl;
+ tlen = *tbl++; ulen = 2; /* Given table size and required table size */
+ cl = fp->sclust; /* Top of the chain */
if (cl) {
do {
- if (tlen < 4) { /* Not enough table items */
- res = FR_NOT_ENOUGH_CORE; break;
- }
- tcl = cl; ncl = 0;
- do { /* Get a fragment and store the top and length */
+ /* Get a fragment */
+ tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
+ do {
pcl = cl; ncl++;
cl = get_fat(fp->fs, cl);
if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
} while (cl == pcl + 1);
- *tbl++ = ncl; *tbl++ = tcl;
- tlen -= 2;
- } while (cl < fp->fs->n_fatent);
+ if (ulen <= tlen) { /* Store the length and top of the fragment */
+ *tbl++ = ncl; *tbl++ = tcl;
+ }
+ } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
}
- *tbl = 0; /* Terminate table */
+ *fp->cltbl = ulen; /* Number of items used */
+ if (ulen <= tlen)
+ *tbl = 0; /* Terminate table */
+ else
+ res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
} else { /* Fast seek */
if (ofs > fp->fsize) /* Clip offset at the file size */
ofs = fp->fsize;
fp->fptr = ofs; /* Set file pointer */
if (ofs) {
- dsc = (ofs - 1) / SS(fp->fs);
- cl = dsc / fp->fs->csize;
- for (;;) {
- ncl = *tbl++;
- if (!ncl) ABORT(fp->fs, FR_INT_ERR);
- if (cl < ncl) break;
- cl -= ncl; tbl++;
- }
- fp->curr_clust = cl + *tbl;
- csc = (BYTE)(dsc & (fp->fs->csize - 1));
- dsc = clust2sect(fp->fs, fp->curr_clust);
+ fp->clust = clmt_clust(fp, ofs - 1);
+ dsc = clust2sect(fp->fs, fp->clust);
if (!dsc) ABORT(fp->fs, FR_INT_ERR);
- dsc += csc;
- if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) {
+ dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
+ if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
#if !_FS_TINY
#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
#endif
- if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK)
+ if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
ABORT(fp->fs, FR_DISK_ERR);
#endif
fp->dsect = dsc;
(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
ofs -= fp->fptr;
- clst = fp->curr_clust;
+ clst = fp->clust;
} else { /* When seek to back cluster, */
- clst = fp->org_clust; /* start from the first cluster */
+ clst = fp->sclust; /* start from the first cluster */
#if !_FS_READONLY
if (clst == 0) { /* If no cluster chain, create a new chain */
clst = create_chain(fp->fs, 0);
if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->org_clust = clst;
+ fp->sclust = clst;
}
#endif
- fp->curr_clust = clst;
+ fp->clust = clst;
}
if (clst != 0) {
while (ofs > bcs) { /* Cluster following loop */
clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
- fp->curr_clust = clst;
+ fp->clust = clst;
fp->fptr += bcs;
ofs -= bcs;
}
}
}
}
- if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
+ if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
#if !_FS_TINY
#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
#endif
- if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK)
+ if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
ABORT(fp->fs, FR_DISK_ERR);
#endif
fp->dsect = nsect;
}
#if !_FS_READONLY
- if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */
+ if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
fp->fsize = fp->fptr;
fp->flag |= FA__WRITTEN;
}
#if _FS_MINIMIZE <= 1
/*-----------------------------------------------------------------------*/
-/* Create a Directroy Object */
+/* Create a Directory Object */
/*-----------------------------------------------------------------------*/
FRESULT f_opendir (
)
{
FRESULT res;
- BYTE *dir;
+ FATFS *fs;
DEF_NAMEBUF;
+ if (!dj) return FR_INVALID_OBJECT;
+
res = chk_mounted(&path, &dj->fs, 0);
+ fs = dj->fs;
if (res == FR_OK) {
INIT_BUF(*dj);
res = follow_path(dj, path); /* Follow the path to the directory */
FREE_BUF();
if (res == FR_OK) { /* Follow completed */
- dir = dj->dir;
- if (dir) { /* It is not the current dir */
- if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
- dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ if (dj->dir) { /* It is not the root dir */
+ if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
+ dj->sclust = ld_clust(fs, dj->dir);
} else { /* The object is not a directory */
res = FR_NO_PATH;
}
}
if (res == FR_OK) {
- dj->id = dj->fs->id;
+ dj->id = fs->id;
res = dir_sdi(dj, 0); /* Rewind dir */
}
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
+ if (res != FR_OK) dj->fs = 0; /* Invalidate the dir object if function faild */
+ } else {
+ dj->fs = 0;
}
- LEAVE_FF(dj->fs, res);
+ LEAVE_FF(fs, res);
}
DEF_NAMEBUF;
- res = validate(dj->fs, dj->id); /* Check validity of the object */
+ res = validate(dj); /* Check validity of the object */
if (res == FR_OK) {
if (!fno) {
- res = dir_sdi(dj, 0);
+ res = dir_sdi(dj, 0); /* Rewind the directory object */
} else {
INIT_BUF(*dj);
- res = dir_read(dj);
- if (res == FR_NO_FILE) {
+ res = dir_read(dj); /* Read an directory item */
+ if (res == FR_NO_FILE) { /* Reached end of dir */
dj->sect = 0;
res = FR_OK;
}
)
{
FRESULT res;
+ FATFS *fs;
DWORD n, clst, sect, stat;
UINT i;
BYTE fat, *p;
/* Get drive number */
res = chk_mounted(&path, fatfs, 0);
+ fs = *fatfs;
if (res == FR_OK) {
/* If free_clust is valid, return it without full cluster scan */
- if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) {
- *nclst = (*fatfs)->free_clust;
+ if (fs->free_clust <= fs->n_fatent - 2) {
+ *nclst = fs->free_clust;
} else {
/* Get number of free clusters */
- fat = (*fatfs)->fs_type;
+ fat = fs->fs_type;
n = 0;
if (fat == FS_FAT12) {
clst = 2;
do {
- stat = get_fat(*fatfs, clst);
+ stat = get_fat(fs, clst);
if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
if (stat == 1) { res = FR_INT_ERR; break; }
if (stat == 0) n++;
- } while (++clst < (*fatfs)->n_fatent);
+ } while (++clst < fs->n_fatent);
} else {
- clst = (*fatfs)->n_fatent;
- sect = (*fatfs)->fatbase;
+ clst = fs->n_fatent;
+ sect = fs->fatbase;
i = 0; p = 0;
do {
if (!i) {
- res = move_window(*fatfs, sect++);
+ res = move_window(fs, sect++);
if (res != FR_OK) break;
- p = (*fatfs)->win;
- i = SS(*fatfs);
+ p = fs->win;
+ i = SS(fs);
}
if (fat == FS_FAT16) {
if (LD_WORD(p) == 0) n++;
}
} while (--clst);
}
- (*fatfs)->free_clust = n;
- if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+ fs->free_clust = n;
+ if (fat == FS_FAT32) fs->fsi_flag = 1;
*nclst = n;
}
}
- LEAVE_FF(*fatfs, res);
+ LEAVE_FF(fs, res);
}
DWORD ncl;
- res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (!fp) return FR_INVALID_OBJECT;
+
+ res = validate(fp); /* Check validity of the object */
if (res == FR_OK) {
if (fp->flag & FA__ERROR) { /* Check abort flag */
res = FR_INT_ERR;
fp->fsize = fp->fptr; /* Set file size to current R/W point */
fp->flag |= FA__WRITTEN;
if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
- res = remove_chain(fp->fs, fp->org_clust);
- fp->org_clust = 0;
+ res = remove_chain(fp->fs, fp->sclust);
+ fp->sclust = 0;
} else { /* When truncate a part of the file, remove remaining clusters */
- ncl = get_fat(fp->fs, fp->curr_clust);
+ ncl = get_fat(fp->fs, fp->clust);
res = FR_OK;
if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
if (ncl == 1) res = FR_INT_ERR;
if (res == FR_OK && ncl < fp->fs->n_fatent) {
- res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
+ res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
if (res == FR_OK) res = remove_chain(fp->fs, ncl);
}
}
res = follow_path(&dj, path); /* Follow the file path */
if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
res = FR_INVALID_NAME; /* Cannot remove dot entry */
-#if _FS_SHARE
+#if _FS_LOCK
if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
#endif
if (res == FR_OK) { /* The object is accessible */
if (dir[DIR_Attr] & AM_RDO)
res = FR_DENIED; /* Cannot remove R/O object */
}
- dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ dclst = ld_clust(dj.fs, dir);
if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
if (dclst < 2) {
res = FR_INT_ERR;
} else {
- mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */
+ mem_cpy(&sdj, &dj, sizeof (DIR)); /* Check if the sub-dir is empty or not */
sdj.sclust = dclst;
res = dir_sdi(&sdj, 2); /* Exclude dot entries */
if (res == FR_OK) {
res = dir_read(&sdj);
- if (res == FR_OK /* Not empty dir */
+ if (res == FR_OK /* Not empty dir */
#if _FS_RPATH
- || dclst == sdj.fs->cdir /* Current dir */
+ || dclst == dj.fs->cdir /* Current dir */
#endif
) res = FR_DENIED;
if (res == FR_NO_FILE) res = FR_OK; /* Empty */
dir[DIR_Name] = '.';
dir[DIR_Attr] = AM_DIR;
ST_DWORD(dir+DIR_WrtTime, tim);
- ST_WORD(dir+DIR_FstClusLO, dcl);
- ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
- mem_cpy(dir+32, dir, 32); /* Create ".." entry */
+ st_clust(dir, dcl);
+ mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */
dir[33] = '.'; pcl = dj.sclust;
if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
pcl = 0;
- ST_WORD(dir+32+DIR_FstClusLO, pcl);
- ST_WORD(dir+32+DIR_FstClusHI, pcl >> 16);
+ st_clust(dir+SZ_DIR, pcl);
for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
dj.fs->winsect = dsc++;
dj.fs->wflag = 1;
}
if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
if (res != FR_OK) {
- remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
+ remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
} else {
dir = dj.dir;
- dir[DIR_Attr] = AM_DIR; /* Attribute */
- ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
- ST_WORD(dir+DIR_FstClusLO, dcl); /* Table start cluster */
- ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ dir[DIR_Attr] = AM_DIR; /* Attribute */
+ ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
+ st_clust(dir, dcl); /* Table start cluster */
dj.fs->wflag = 1;
res = sync(dj.fs);
}
/*-----------------------------------------------------------------------*/
-/* Change Time-stamp */
+/* Change Timestamp */
/*-----------------------------------------------------------------------*/
FRESULT f_utime (
res = follow_path(&djo, path_old); /* Check old object */
if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
res = FR_INVALID_NAME;
-#if _FS_SHARE
+#if _FS_LOCK
if (res == FR_OK) res = chk_lock(&djo, 2);
#endif
if (res == FR_OK) { /* Old object is found */
res = FR_NO_FILE;
} else {
mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
- mem_cpy(&djn, &djo, sizeof(DIR)); /* Check new object */
+ mem_cpy(&djn, &djo, sizeof (DIR)); /* Check new object */
res = follow_path(&djn, path_new);
- if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
- if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
-/* Start critical section that any interruption or error can cause cross-link */
+ if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
+ if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
+/* Start critical section that an interruption or error can cause cross-link */
res = dir_register(&djn); /* Register the new entry */
if (res == FR_OK) {
dir = djn.dir; /* Copy object information except for name */
dir[DIR_Attr] = buf[0] | AM_ARC;
djo.fs->wflag = 1;
if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
- dw = clust2sect(djn.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
+ dw = clust2sect(djo.fs, ld_clust(djo.fs, dir));
if (!dw) {
res = FR_INT_ERR;
} else {
- res = move_window(djn.fs, dw);
- dir = djn.fs->win+32; /* .. entry */
+ res = move_window(djo.fs, dw);
+ dir = djo.fs->win+SZ_DIR; /* .. entry */
if (res == FR_OK && dir[1] == '.') {
- dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
- ST_WORD(dir+DIR_FstClusLO, dw);
- ST_WORD(dir+DIR_FstClusHI, dw >> 16);
- djn.fs->wflag = 1;
+ dw = (djo.fs->fs_type == FS_FAT32 && djn.sclust == djo.fs->dirbase) ? 0 : djn.sclust;
+ st_clust(dir, dw);
+ djo.fs->wflag = 1;
}
}
}
BYTE csect;
- *bf = 0; /* Initialize byte counter */
+ *bf = 0; /* Clear transfer byte counter */
+
+ if (!fp) return FR_INVALID_OBJECT;
- res = validate(fp->fs, fp->id); /* Check validity of the object */
+ res = validate(fp); /* Check validity of the object */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
if (fp->flag & FA__ERROR) /* Check error flag */
LEAVE_FF(fp->fs, FR_INT_ERR);
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
if (!csect) { /* On the cluster boundary? */
clst = (fp->fptr == 0) ? /* On the top of the file? */
- fp->org_clust : get_fat(fp->fs, fp->curr_clust);
+ fp->sclust : get_fat(fp->fs, fp->clust);
if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
+ fp->clust = clst; /* Update current cluster */
}
}
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */
+ sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
sect += csect;
if (move_window(fp->fs, sect)) /* Move sector window */
/*-----------------------------------------------------------------------*/
/* Create File System on the Drive */
/*-----------------------------------------------------------------------*/
-#define N_ROOTDIR 512 /* Multiple of 32 */
-#define N_FATS 1 /* 1 or 2 */
+#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
+#define N_FATS 1 /* Number of FAT copies (1 or 2) */
FRESULT f_mkfs (
{
static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
- BYTE fmt, md, *tbl;
- DWORD n_clst, vs, n;
- UINT as, i;
- DWORD b_vol, b_fat, b_dir, b_data; /* Area offset (LBA) */
- DWORD n_vol, n_rsv, n_fat, n_dir; /* Area size */
+ BYTE fmt, md, sys, *tbl, pdrv, part;
+ DWORD n_clst, vs, n, wsect;
+ UINT i;
+ DWORD b_vol, b_fat, b_dir, b_data; /* LBA */
+ DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
FATFS *fs;
DSTATUS stat;
/* Check mounted drive and clear work area */
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+ if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
+ if (sfd > 1) return FR_INVALID_PARAMETER;
+ if (au & (au - 1)) return FR_INVALID_PARAMETER;
fs = FatFs[drv];
if (!fs) return FR_NOT_ENABLED;
fs->fs_type = 0;
- drv = LD2PD(drv);
+ pdrv = LD2PD(drv); /* Physical drive */
+ part = LD2PT(drv); /* Partition (0:auto detect, 1-4:get from partition table)*/
/* Get disk statics */
- stat = disk_initialize(drv);
+ stat = disk_initialize(pdrv);
if (stat & STA_NOINIT) return FR_NOT_READY;
if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
#if _MAX_SS != 512 /* Get disk sector size */
- if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
return FR_DISK_ERR;
#endif
- if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
- return FR_DISK_ERR;
- b_vol = (sfd == 1) ? 0 : 63; /* Volume start sector */
- n_vol -= b_vol;
- if (au & (au - 1)) au = 0; /* Check validity of the allocation unit size */
- if (!au) { /* AU auto selection */
+ if (_MULTI_PARTITION && part) {
+ /* Get partition information from partition table in the MBR */
+ if (disk_read(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
+ if (LD_WORD(fs->win+BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;
+ tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
+ if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */
+ b_vol = LD_DWORD(tbl+8); /* Volume start sector */
+ n_vol = LD_DWORD(tbl+12); /* Volume size */
+ } else {
+ /* Create a partition in this function */
+ if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
+ return FR_DISK_ERR;
+ b_vol = (sfd) ? 0 : 63; /* Volume start sector */
+ n_vol -= b_vol; /* Volume size */
+ }
+
+ if (!au) { /* AU auto selection */
vs = n_vol / (2000 / (SS(fs) / 512));
for (i = 0; vs < vst[i]; i++) ;
au = cst[i];
}
- if (_MAX_SS != 512 && au < SS(fs)) au = SS(fs);
au /= SS(fs); /* Number of sectors per cluster */
if (au == 0) au = 1;
if (au > 128) au = 128;
- /* Pre-compute number of clusters and FAT syb-type */
+ /* Pre-compute number of clusters and FAT sub-type */
n_clst = n_vol / au;
fmt = FS_FAT12;
if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
n_fat = (n_fat + SS(fs) - 1) / SS(fs);
n_rsv = 1;
- n_dir = N_ROOTDIR * 32UL / SS(fs);
+ n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);
}
b_fat = b_vol + n_rsv; /* FAT area start sector */
b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
b_data = b_dir + n_dir; /* Data area start sector */
- if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */
+ if (n_vol < b_data + au - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
/* Align data start sector to erase block boundary (for flash memory media) */
- if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_DISK_ERR;
- if (!n || n > 32768) return FR_MKFS_ABORTED;
- n = (b_data + n - 1) & ~(n - 1); /* Next nearest boundary from current data start */
+ if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
+ n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
n = (n - b_data) / N_FATS;
- if (fmt == FS_FAT32) { /* FAT32: Move FAT start */
+ if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
n_rsv += n;
b_fat += n;
} else { /* FAT12/16: Expand FAT size */
n_fat += n;
}
- /* b_dir and b_data are no longer used below */
- /* Determine number of cluster and final check of validity of the FAT sub-type */
+ /* Determine number of clusters and final check of validity of the FAT sub-type */
n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
|| (fmt == FS_FAT32 && n_clst < MIN_FAT32))
return FR_MKFS_ABORTED;
- /* Create partition table if required */
- if (sfd == 1) {
- md = 0xF0;
- } else {
- DWORD n_disk = b_vol + n_vol;
-
- mem_set(fs->win, 0, SS(fs));
- tbl = fs->win+MBR_Table;
- ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
- if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
- n_disk = n_disk / 63 / 255;
- tbl[7] = (BYTE)n_disk;
- tbl[6] = (BYTE)((n_disk >> 2) | 63);
- } else {
- ST_WORD(&tbl[6], 0xFFFF);
- }
- tbl[5] = 254;
- if (fmt != FS_FAT32) /* System ID */
- tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06;
- else
- tbl[4] = 0x0c;
- ST_DWORD(tbl+8, 63); /* Partition start in LBA */
- ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
- ST_WORD(tbl+64, 0xAA55); /* Signature */
- if (disk_write(drv, fs->win, 0, 1) != RES_OK)
- return FR_DISK_ERR;
+ switch (fmt) { /* Determine system ID for partition table */
+ case FS_FAT12: sys = 0x01; break;
+ case FS_FAT16: sys = (n_vol < 0x10000) ? 0x04 : 0x06; break;
+ default: sys = 0x0C;
+ }
+
+ if (_MULTI_PARTITION && part) {
+ /* Update system ID in the partition table */
+ tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE];
+ tbl[4] = sys;
+ if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) return FR_DISK_ERR;
md = 0xF8;
+ } else {
+ if (sfd) { /* No partition table (SFD) */
+ md = 0xF0;
+ } else { /* Create partition table (FDISK) */
+ mem_set(fs->win, 0, SS(fs));
+ tbl = fs->win+MBR_Table; /* Create partition table for single partition in the drive */
+ tbl[1] = 1; /* Partition start head */
+ tbl[2] = 1; /* Partition start sector */
+ tbl[3] = 0; /* Partition start cylinder */
+ tbl[4] = sys; /* System type */
+ tbl[5] = 254; /* Partition end head */
+ n = (b_vol + n_vol) / 63 / 255;
+ tbl[6] = (BYTE)((n >> 2) | 63); /* Partition end sector */
+ tbl[7] = (BYTE)n; /* End cylinder */
+ ST_DWORD(tbl+8, 63); /* Partition start in LBA */
+ ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
+ ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */
+ if (disk_write(pdrv, fs->win, 0, 1) != RES_OK) /* Write it to the MBR sector */
+ return FR_DISK_ERR;
+ md = 0xF8;
+ }
}
- /* Create VBR */
- tbl = fs->win; /* Clear buffer */
+ /* Create BPB in the VBR */
+ tbl = fs->win; /* Clear sector */
mem_set(tbl, 0, SS(fs));
- ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */
- as = SS(fs); /* Sector size */
- ST_WORD(tbl+BPB_BytsPerSec, as);
- tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
- ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
- tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
- as = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
- ST_WORD(tbl+BPB_RootEntCnt, as);
- if (n_vol < 0x10000) { /* Number of total sectors */
+ mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
+ i = SS(fs); /* Sector size */
+ ST_WORD(tbl+BPB_BytsPerSec, i);
+ tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
+ ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
+ tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
+ i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
+ ST_WORD(tbl+BPB_RootEntCnt, i);
+ if (n_vol < 0x10000) { /* Number of total sectors */
ST_WORD(tbl+BPB_TotSec16, n_vol);
} else {
ST_DWORD(tbl+BPB_TotSec32, n_vol);
}
- tbl[BPB_Media] = md; /* Media descriptor */
- ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
- ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
- ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
- n = get_fattime(); /* Use current time as VSN */
+ tbl[BPB_Media] = md; /* Media descriptor */
+ ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
+ ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
+ ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
+ n = get_fattime(); /* Use current time as VSN */
if (fmt == FS_FAT32) {
- ST_DWORD(tbl+BS_VolID32, n); /* VSN */
- ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
- ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
- ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
- ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
- tbl[BS_DrvNum32] = 0x80; /* Drive number */
- tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
- mem_cpy(tbl+BS_VolLab32, "NO NAME FAT32 ", 19); /* Volume label, FAT signature */
+ ST_DWORD(tbl+BS_VolID32, n); /* VSN */
+ ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
+ ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
+ ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
+ ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
+ tbl[BS_DrvNum32] = 0x80; /* Drive number */
+ tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
} else {
- ST_DWORD(tbl+BS_VolID, n); /* VSN */
- ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
- tbl[BS_DrvNum] = 0x80; /* Drive number */
- tbl[BS_BootSig] = 0x29; /* Extended boot signature */
- mem_cpy(tbl+BS_VolLab, "NO NAME FAT ", 19); /* Volume label, FAT signature */
- }
- ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
- if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Original (VBR) */
+ ST_DWORD(tbl+BS_VolID, n); /* VSN */
+ ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
+ tbl[BS_DrvNum] = 0x80; /* Drive number */
+ tbl[BS_BootSig] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
+ }
+ ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
+ if (disk_write(pdrv, tbl, b_vol, 1) != RES_OK) /* Write it to the VBR sector */
return FR_DISK_ERR;
- if (fmt == FS_FAT32) /* Backup (VBR+6) */
- disk_write(drv, tbl, b_vol + 6, 1);
+ if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */
+ disk_write(pdrv, tbl, b_vol + 6, 1);
/* Initialize FAT area */
- for (i = 0; i < N_FATS; i++) {
+ wsect = b_fat;
+ for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
n = md; /* Media descriptor byte */
if (fmt != FS_FAT32) {
n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
} else {
- n |= 0x0FFFFF00;
+ n |= 0xFFFFFF00;
ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
- ST_DWORD(tbl+4, 0x0FFFFFFF);
+ ST_DWORD(tbl+4, 0xFFFFFFFF);
ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
}
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
return FR_DISK_ERR;
- mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
- for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector write */
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
+ for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
+ if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
return FR_DISK_ERR;
}
}
/* Initialize root directory */
- n = (fmt == FS_FAT32) ? as : n_dir;
- while (n--) {
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ i = (fmt == FS_FAT32) ? au : n_dir;
+ do {
+ if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK)
return FR_DISK_ERR;
+ } while (--i);
+
+#if _USE_ERASE /* Erase data area if needed */
+ {
+ DWORD eb[2];
+
+ eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
+ disk_ioctl(pdrv, CTRL_ERASE_SECTOR, eb);
}
+#endif
- /* Create FSInfo record if needed */
+ /* Create FSInfo if needed */
if (fmt == FS_FAT32) {
- ST_WORD(tbl+BS_55AA, 0xAA55);
ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
- ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
- ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
- disk_write(drv, tbl, b_vol + 1, 1); /* Original (VBR+1) */
- disk_write(drv, tbl, b_vol + 7, 1); /* Backup (VBR+7) */
+ ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */
+ ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */
+ ST_WORD(tbl+BS_55AA, 0xAA55);
+ disk_write(pdrv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */
+ disk_write(pdrv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */
+ }
+
+ return (disk_ioctl(pdrv, CTRL_SYNC, 0) == RES_OK) ? FR_OK : FR_DISK_ERR;
+}
+
+
+#if _MULTI_PARTITION == 2
+/*-----------------------------------------------------------------------*/
+/* Divide Physical Drive */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_fdisk (
+ BYTE pdrv, /* Physical drive number */
+ const DWORD szt[], /* Pointer to the size table for each partitions */
+ void* work /* Pointer to the working buffer */
+)
+{
+ UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
+ BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;
+ DSTATUS stat;
+ DWORD sz_disk, sz_part, s_part;
+
+
+ stat = disk_initialize(pdrv);
+ if (stat & STA_NOINIT) return FR_NOT_READY;
+ if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+ if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
+
+ /* Determine CHS in the table regardless of the drive geometry */
+ for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
+ if (n == 256) n--;
+ e_hd = n - 1;
+ sz_cyl = 63 * n;
+ tot_cyl = sz_disk / sz_cyl;
+
+ /* Create partition table */
+ mem_set(buf, 0, _MAX_SS);
+ p = buf + MBR_Table; b_cyl = 0;
+ for (i = 0; i < 4; i++, p += SZ_PTE) {
+ p_cyl = (szt[i] <= 100) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
+ if (!p_cyl) continue;
+ s_part = (DWORD)sz_cyl * b_cyl;
+ sz_part = (DWORD)sz_cyl * p_cyl;
+ if (i == 0) { /* Exclude first track of cylinder 0 */
+ s_hd = 1;
+ s_part += 63; sz_part -= 63;
+ } else {
+ s_hd = 0;
+ }
+ e_cyl = b_cyl + p_cyl - 1;
+ if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
+
+ /* Set partition table */
+ p[1] = s_hd; /* Start head */
+ p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */
+ p[3] = (BYTE)b_cyl; /* Start cylinder */
+ p[4] = 0x06; /* System type (temporary setting) */
+ p[5] = e_hd; /* End head */
+ p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */
+ p[7] = (BYTE)e_cyl; /* End cylinder */
+ ST_DWORD(p + 8, s_part); /* Start sector in LBA */
+ ST_DWORD(p + 12, sz_part); /* Partition size */
+
+ /* Next partition */
+ b_cyl += p_cyl;
}
+ ST_WORD(p, 0xAA55);
- return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
+ /* Write it to the MBR */
+ return (disk_write(pdrv, buf, 0, 1) || disk_ioctl(pdrv, CTRL_SYNC, 0)) ? FR_DISK_ERR : FR_OK;
}
+
+#endif /* _MULTI_PARTITION == 2 */
#endif /* _USE_MKFS && !_FS_READONLY */
{
va_list arp;
BYTE f, r;
- UINT i, w;
- ULONG val;
- TCHAR c, d, s[16];
- int res, cc;
+ UINT i, j, w;
+ ULONG v;
+ TCHAR c, d, s[16], *p;
+ int res, chc, cc;
va_start(arp, str);
c = *str++;
if (c == '0') { /* Flag: '0' padding */
f = 1; c = *str++;
+ } else {
+ if (c == '-') { /* Flag: left justified */
+ f = 2; c = *str++;
+ }
}
while (IsDigit(c)) { /* Precision */
w = w * 10 + c - '0';
c = *str++;
}
if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
- f |= 2; c = *str++;
+ f |= 4; c = *str++;
}
if (!c) break;
d = c;
if (IsLower(d)) d -= 0x20;
switch (d) { /* Type is... */
case 'S' : /* String */
- cc = f_puts(va_arg(arp, TCHAR*), fil); continue;
+ p = va_arg(arp, TCHAR*);
+ for (j = 0; p[j]; j++) ;
+ chc = 0;
+ if (!(f & 2)) {
+ while (j++ < w) chc += (cc = f_putc(' ', fil));
+ }
+ chc += (cc = f_puts(p, fil));
+ while (j++ < w) chc += (cc = f_putc(' ', fil));
+ if (cc != EOF) cc = chc;
+ continue;
case 'C' : /* Character */
cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
case 'B' : /* Binary */
case 'D' : /* Signed decimal */
case 'U' : /* Unsigned decimal */
r = 10; break;
- case 'X' : /* Hexadecimal */
+ case 'X' : /* Hexdecimal */
r = 16; break;
- default: /* Unknown */
+ default: /* Unknown type (pass-through) */
cc = f_putc(c, fil); continue;
}
- /* Get an argument */
- val = (f & 2) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
- if (d == 'D' && (val & 0x80000000)) {
- val = 0 - val;
- f |= 4;
+ /* Get an argument and put it in numeral */
+ v = (f & 4) ? (ULONG)va_arg(arp, long) : ((d == 'D') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int));
+ if (d == 'D' && (v & 0x80000000)) {
+ v = 0 - v;
+ f |= 8;
}
- /* Put it in numeral string */
i = 0;
do {
- d = (TCHAR)(val % r); val /= r;
- if (d > 9) {
- d += 7;
- if (c == 'x') d += 0x20;
- }
+ d = (TCHAR)(v % r); v /= r;
+ if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
s[i++] = d + '0';
- } while (val && i < sizeof(s) / sizeof(s[0]));
- if (f & 4) s[i++] = '-';
- cc = 0;
- while (i < w-- && cc != EOF) {
- cc = f_putc((TCHAR)((f & 1) ? '0' : ' '), fil);
- res++;
- }
- do {
- cc = f_putc(s[--i], fil);
- res++;
- } while (i && cc != EOF);
- if (cc != EOF) cc = 0;
+ } while (v && i < sizeof s / sizeof s[0]);
+ if (f & 8) s[i++] = '-';
+ j = i; d = (f & 1) ? '0' : ' ';
+ res = 0;
+ while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil));
+ do res += (cc = f_putc(s[--i], fil)); while(i);
+ while (j++ < w) res += (cc = f_putc(' ', fil));
+ if (cc != EOF) cc = res;
}
va_end(arp);
projects / pub / USBasp.git / blobdiff