/*----------------------------------------------------------------------------/ / FatFs - FAT file system module R0.10b (C)ChaN, 2014 /-----------------------------------------------------------------------------/ / 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) 2014, ChaN, all right reserved. / / * The FatFs module is a free software and there is NO WARRANTY. / * No restriction on use. You can use, modify and redistribute it for / personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY. / * Redistributions of source code must retain the above copyright notice. / /-----------------------------------------------------------------------------/ / Feb 26,'06 R0.00 Prototype. / / Apr 29,'06 R0.01 First stable version. / / Jun 01,'06 R0.02 Added FAT12 support. / Removed unbuffered mode. / Fixed a problem on small (<32M) partition. / Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM). / / Sep 22,'06 R0.03 Added f_rename(). / Changed option _FS_MINIMUM to _FS_MINIMIZE. / Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast. / Fixed f_mkdir() creates incorrect directory on FAT32. / / Feb 04,'07 R0.04 Supported multiple drive system. / Changed some interfaces for multiple drive system. / Changed f_mountdrv() to f_mount(). / Added f_mkfs(). / Apr 01,'07 R0.04a Supported multiple partitions on a physical drive. / Added a capability of extending file size to f_lseek(). / Added minimization level 3. / Fixed an endian sensitive code in f_mkfs(). / May 05,'07 R0.04b Added a configuration option _USE_NTFLAG. / Added FSINFO support. / Fixed DBCS name can result FR_INVALID_NAME. / Fixed short seek (<= csize) collapses the file object. / / Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs(). / Fixed f_mkfs() on FAT32 creates incorrect FSINFO. / Fixed f_mkdir() on FAT32 creates incorrect directory. / Feb 03,'08 R0.05a Added f_truncate() and f_utime(). / Fixed off by one error at FAT sub-type determination. / Fixed btr in f_read() can be mistruncated. / Fixed cached sector is not flushed when create and close without write. / / Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets(). / Improved performance of f_lseek() on moving to the same or following cluster. / / Apr 01,'09 R0.07 Merged Tiny-FatFs as a 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 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. / Added f_chdir() and f_chdrive(). / Added proper case conversion to extended character. / Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h. / Fixed f_unlink() fails to remove a sub-directory on _FS_RPATH. / Fixed name matching error on the 13 character boundary. / Added a configuration option, _LFN_UNICODE. / 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 = 3) / Added file lock feature. (_FS_SHARE) / Added fast seek feature. (_USE_FASTSEEK) / Changed some types on the API, XCHAR->TCHAR. / Changed .fname 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(). / 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(). / Ignores duplicated directory separators in given path name. / / Sep 06,'11 R0.09 f_mkfs() supports multiple partition to complete the multiple partition feature. / Added f_fdisk(). / Aug 27,'12 R0.09a Changed f_open() and f_opendir() reject null object pointer to avoid crash. / Changed option name _FS_SHARE to _FS_LOCK. / Fixed assertion failure due to OS/2 EA on FAT12/16 volume. / Jan 24,'13 R0.09b Added f_setlabel() and f_getlabel(). / / Oct 02,'13 R0.10 Added selection of character encoding on the file. (_STRF_ENCODE) / Added f_closedir(). / Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO) / Added forced mount feature with changes of f_mount(). / Improved behavior of volume auto detection. / Improved write throughput of f_puts() and f_printf(). / Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write(). / Fixed f_write() can be truncated when the file size is close to 4GB. / Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect error code. / Jan 15,'14 R0.10a Added arbitrary strings as drive number in the path name. (_STR_VOLUME_ID) / Added a configuration option of minimum sector size. (_MIN_SS) / 2nd argument of f_rename() can have a drive number and it will be ignored. / Fixed f_mount() with forced mount fails when drive number is >= 1. / Fixed f_close() invalidates the file object without volume lock. / Fixed f_closedir() returns but the volume lock is left acquired. / Fixed creation of an entry with LFN fails on too many SFN collisions. / May 19,'14 R0.10b Fixed a hard error in the disk I/O layer can collapse the directory entry. / Fixed LFN entry is not deleted on delete/rename an object with lossy converted SFN. /---------------------------------------------------------------------------*/ #include "xparameters.h" #ifdef XPAR_XSDPS_0_DEVICE_ID #include "ff.h" /* FatFs configurations and declarations */ #include "diskio.h" /* Declarations of low level disk I/O functions */ #include "xil_printf.h" /*-------------------------------------------------------------------------- Module Private Definitions ---------------------------------------------------------------------------*/ #if FAT_FS != 8051 /* Revision ID */ #error Wrong include file (ff.h). #endif /* Reentrancy related */ #if _FS_REENTRANT #if _USE_LFN == 1 #error Static LFN work area cannot be used at thread-safe 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->err = (BYTE)(res); LEAVE_FF((fs), (res)); } /* Definitions of sector size */ #if (_MAX_SS < _MIN_SS) || (_MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096) || (_MIN_SS != 512 && _MIN_SS != 1024 && _MIN_SS != 2048 && _MIN_SS != 4096) #error Wrong sector size configuration. #endif #if _MAX_SS == _MIN_SS #define SS(fs) _MAX_SS /* Fixed sector size */ #else #define SS(fs) ((fs)->ssize) /* Variable sector size */ #endif /* File access control feature */ #if _FS_LOCK #if _FS_READONLY #error _FS_LOCK must be 0 at read-only cfg. #endif typedef struct { FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */ DWORD clu; /* Object ID 2, directory (0:root) */ WORD idx; /* Object ID 3, directory index */ WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */ } FILESEM; #endif /* DBCS code ranges and SBCS extend character conversion table */ #if _CODE_PAGE == 932 /* Japanese Shift-JIS */ #define DF1S 0x81U /* DBC 1st byte range 1 start */ #define DF_1E 0x9FU /* DBC 1st byte range 1 end */ #define DF_2S 0xE0U /* DBC 1st byte range 2 start */ #define DF_2E 0xFCU /* DBC 1st byte range 2 end */ #define DS_1S 0x40U /* DBC 2nd byte range 1 start */ #define DS_1E 0x7EU /* DBC 2nd byte range 1 end */ #define DS_2S 0x80U /* DBC 2nd byte range 2 start */ #define DS_2E 0xFCU /* DBC 2nd byte range 2 end */ #elif _CODE_PAGE == 936 /* Simplified Chinese GBK */ #define DF1S 0x81U #define DF_1E 0xFEU #define DS_1S 0x40U #define DS_1E 0x7EU #define DS_2S 0x80U #define DS_2E 0xFEU #elif _CODE_PAGE == 949 /* Korean */ #define DF1S 0x81U #define DF_1E 0xFEU #define DS_1S 0x41U #define DS_1E 0x5AU #define DS_2S 0x61U #define DS_2E 0x7AU #define _DS3S 0x81U #define _DS3E 0xFEU #elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */ #define DF1S 0x81U #define DF_1E 0xFEU #define DS_1S 0x40U #define DS_1E 0x7EU #define DS_2S 0xA1U #define DS_2E 0xFEU #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)>=(BYTE)'A')&&((c)<=(BYTE)'Z')) #define IsLower(c) (((c)>=(BYTE)'a')&&((c)<=(BYTE)'z')) #define IsDigit(c) (((c)>=(BYTE)'0')&&((c)<=(BYTE)'9')) #if DF1S /* Code page is DBCS */ #ifdef DF_2S /* Two 1st byte areas */ #define IsDBCS1(c) ((((BYTE)(c) >= DF1S) && ((BYTE)(c) <= DF_1E)) || (((BYTE)(c) >= DF_2S) && ((BYTE)(c) <= DF_2E))) #else /* One 1st byte area */ #define IsDBCS1(c) (((BYTE)(c) >= DF1S) && ((BYTE)(c) <= DF_1E)) #endif #ifdef _DS3S /* Three 2nd byte areas */ #define IsDBCS2(c) ((((BYTE)(c) >= DS_1S) && ((BYTE)(c) <= DS_1E)) || (((BYTE)(c) >= DS_2S) && ((BYTE)(c) <= DS_2E)) || (((BYTE)(c) >= _DS3S) && ((BYTE)(c) <= _DS3E))) #else /* Two 2nd byte areas */ #define IsDBCS2(c) ((((BYTE)(c) >= DS_1S) && ((BYTE)(c) <= DS_1E)) || (((BYTE)(c) >= DS_2S) && ((BYTE)(c) <= DS_2E))) #endif #else /* Code page is SBCS */ #define IsDBCS1(c) 0 #define IsDBCS2(c) 0 #endif /* DF1S */ /* Name status flags */ #define NS 11 /* Index of name status byte in fn[] */ #define NS_LOSS 0x01U /* Out of 8.3 format */ #define NS_LFN 0x02U /* Force to create LFN entry */ #define NS_LAST 0x04U /* Last segment */ #define NS_BODY 0x08U /* Lower case flag (body) */ #define NS_EXT 0x10U /* Lower case flag (ext) */ #define NS_DOT 0x20U /* Dot entry */ /* FAT sub-type boundaries */ #define MIN_FAT16 4086U /* Minimum number of clusters for FAT16 */ #define MIN_FAT32 65526U /* 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 0U /* Jump instruction (3) */ #define BS_OEMName 3U /* OEM name (8) */ #define BPB_BytsPerSec 11U /* Sector size [byte] (2) */ #define BPB_SecPerClus 13U /* Cluster size [sector] (1) */ #define BPB_RsvdSecCnt 14U /* Size of reserved area [sector] (2) */ #define BPB_NumFATs 16U /* Number of FAT copies (1) */ #define BPB_RootEntCnt 17U /* Number of root directory entries for FAT12/16 (2) */ #define BPB_TotSec16 19U /* Volume size [sector] (2) */ #define BPB_Media 21U /* Media descriptor (1) */ #define BPB_FATSz16 22U /* FAT size [sector] (2) */ #define BPB_SecPerTrk 24U /* Track size [sector] (2) */ #define BPB_NumHeads 26U /* Number of heads (2) */ #define BPB_HiddSec 28U /* Number of special hidden sectors (4) */ #define BPB_TotSec32 32U /* Volume size [sector] (4) */ #define BS_DrvNum 36U /* Physical drive number (2) */ #define BS_BootSig 38U /* Extended boot signature (1) */ #define BS_VolID 39U /* Volume serial number (4) */ #define BS_VolLab 43U /* Volume label (8) */ #define BS_FilSysType 54U /* File system type (1) */ #define BPB_FATSz32 36U /* FAT size [sector] (4) */ #define BPB_ExtFlags 40U /* Extended flags (2) */ #define BPB_FSVer 42U /* File system version (2) */ #define BPB_RootClus 44U /* Root directory first cluster (4) */ #define BPB_FSInfo 48U /* Offset of FSINFO sector (2) */ #define BPB_BkBootSec 50U /* Offset of backup boot sector (2) */ #define BS_DrvNum32 64U /* Physical drive number (2) */ #define BS_BootSig32 66U /* Extended boot signature (1) */ #define BS_VolID32 67U /* Volume serial number (4) */ #define BS_VolLab32 71U /* Volume label (8) */ #define BS_FilSysType32 82U /* File system type (1) */ #define FSI_LeadSig 0U /* FSI: Leading signature (4) */ #define FSI_StrucSig 484U /* FSI: Structure signature (4) */ #define FSI_Free_Count 488U /* FSI: Number of free clusters (4) */ #define FSI_Nxt_Free 492U /* FSI: Last allocated cluster (4) */ #define MBR_Table 446U /* MBR: Partition table offset (2) */ #define SZ_PTE 16U /* MBR: Size of a partition table entry */ #define BS_55AA 510U /* Signature word (2) */ #define DIR_Name 0U /* Short file name (11) */ #define DIR_Attr 11U /* Attribute (1) */ #define DIR_NTres 12U /* NT flag (1) */ #define DIR_CrtTimeTenth 13U /* Created time sub-second (1) */ #define DIR_CrtTime 14U /* Created time (2) */ #define DIR_CrtDate 16U /* Created date (2) */ #define DIR_LstAccDate 18U /* Last accessed date (2) */ #define DIR_FstClusHI 20U /* Higher 16-bit of first cluster (2) */ #define DIR_WrtTime 22U /* Modified time (2) */ #define DIR_WrtDate 24U /* Modified date (2) */ #define DIR_FstClusLO 26U /* Lower 16-bit of first cluster (2) */ #define DIR_FileSize 28U /* File size (4) */ #define LDIR_Ord 0U /* LFN entry order and LLE flag (1) */ #define LDIR_Attr 11U /* LFN attribute (1) */ #define LDIR_Type 12U /* LFN type (1) */ #define LDIR_Chksum 13U /* Sum of corresponding SFN entry */ #define LDIR_FstClusLO 26U /* Filled by zero (0) */ #define SZ_DIR 32U /* Size of a directory entry */ #define LLE 0x40U /* Last long entry flag in LDIR_Ord */ #define DDE 0xE5U /* Deleted directory entry mark in DIR_Name[0] */ #define NDDE 0x05U /* Replacement of the character collides with DDE */ /*------------------------------------------------------------*/ /* Module private work area */ /*------------------------------------------------------------*/ /* Note that uninitialized variables with static duration are / guaranteed zero/null as initial value. If not, either the / linker or start-up routine is out of ANSI-C standard. */ #if _VOLUMES >= 1 || _VOLUMES <= 10 static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */ #else #error Number of volumes must be 1 to 10. #endif #if _FS_RPATH && _VOLUMES >= 2 static BYTE CurrVol; /* Current drive */ #endif #if _FS_LOCK static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */ #endif #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 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 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 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); \ (dobj).lfn = lfn; (dobj).fn = sfn; } #define FREE_BUF() ff_memfree(lfn) #else #error Wrong LFN configuration. #endif #ifdef _EXCVT static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for extended characters */ #endif /*-------------------------------------------------------------------------- Module Private Functions ---------------------------------------------------------------------------*/ /*-----------------------------------------------------------------------*/ /* String functions */ /*-----------------------------------------------------------------------*/ /* Copy memory to memory */ static void mem_cpy (void* dst, const void* src, UINT cnt) { BYTE *d = (BYTE*)(void *)dst; const BYTE *s = src; #if _WORD_ACCESS == 1 while (cnt >= sizeof (int)) { *(int*)d = *(int*)s; d += sizeof (int); s += sizeof (int); cnt -= sizeof (int); } #endif while ((cnt) > 0U){ *d=*s; d+=1U; s+=1U; cnt-=1U; } } /* Fill memory */ static void mem_set (void* dst, s32 val, UINT cnt) { BYTE *d = (BYTE*)(void *)dst; while ((cnt) > 0U){ *d = (BYTE)val; d+=1U; cnt-=1U; } } /* Compare memory to memory */ static s32 mem_cmp (const void* dst, const void* src, UINT cnt) { const BYTE *d = dst, *s = src; s32 r = (s32)0; UINT LocCnt = cnt; while (((LocCnt) != 0U) && ((r = (s32)(*d - *s)) == 0)) { d+=1U; s+=1U; LocCnt-=1U; } return r; } /* Check if chr is contained in the string */ static s32 chk_chr (const char* str, s32 chr) { char Status; const char *LocStr = str; while (((*LocStr) != (char)0) && ((*LocStr != chr) != 0U)){ LocStr+=1; } Status = *LocStr; return (s32)Status; } /*-----------------------------------------------------------------------*/ /* Request/Release grant to access the volume */ /*-----------------------------------------------------------------------*/ #if _FS_REENTRANT static s32 lock_fs ( FATFS* fs /* File system object */ ) { return ff_req_grant(fs->sobj); } static void unlock_fs ( FATFS* fs, /* File system object */ FRESULT res /* Result code to be returned */ ) { if (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_INVALID_OBJECT && res != FR_TIMEOUT) { ff_rel_grant(fs->sobj); } } #endif /*-----------------------------------------------------------------------*/ /* File lock control functions */ /*-----------------------------------------------------------------------*/ #if _FS_LOCK static FRESULT chk_lock ( /* Check if the file can be accessed */ DIR* dp, /* Directory object pointing the file to be checked */ s32 acc /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */ ) { UINT i, be; /* Search file semaphore table */ for (i = be = 0; i < _FS_LOCK; i++) { if (Files[i].fs) { /* Existing entry */ if (Files[i].fs == dp->fs && /* Check if the object matched with an open object */ Files[i].clu == dp->sclust && Files[i].idx == dp->index) break; } else { /* Blank entry */ be = 1; } } if (i == _FS_LOCK) /* The object is not opened */ return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new object? */ /* The object has been opened. Reject any open against writing file and all write mode open */ return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK; } static s32 enq_lock (void) /* Check if an entry is available for a new object */ { UINT i; for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ; return (i == _FS_LOCK) ? 0 : 1; } static UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */ DIR* dp, /* Directory object pointing the file to register or increment */ s32 acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */ ) { UINT i; for (i = 0; i < _FS_LOCK; i++) { /* Find the object */ if (Files[i].fs == dp->fs && Files[i].clu == dp->sclust && Files[i].idx == dp->index) break; } 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 free entry to register (int err) */ Files[i].fs = dp->fs; Files[i].clu = dp->sclust; Files[i].idx = dp->index; Files[i].ctr = 0; } if (acc && Files[i].ctr) return 0; /* Access violation (int err) */ Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1; /* Set semaphore value */ return i + 1; } static FRESULT dec_lock ( /* Decrement object open counter */ UINT i /* Semaphore index (1..) */ ) { WORD n; FRESULT res; if (--i < _FS_LOCK) { /* Shift index number origin from 0 */ n = Files[i].ctr; if (n == 0x100) n = 0; /* If write mode open, delete the entry */ if (n) n--; /* Decrement read mode open count */ Files[i].ctr = n; if (!n) Files[i].fs = 0; /* Delete the entry if open count gets zero */ res = FR_OK; } else { res = FR_INT_ERR; /* Invalid index nunber */ } 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 /*-----------------------------------------------------------------------*/ /* Move/Flush disk access window in the file system object */ /*-----------------------------------------------------------------------*/ #if !_FS_READONLY static FRESULT sync_window ( FATFS* fs /* File system object */ ) { DWORD wsect; UINT nf; if (fs->wflag != 0U) { /* Write back the sector if it is dirty */ wsect = fs->winsect; /* Current sector number */ if (disk_write(fs->drv, fs->win, wsect, 1U) != RES_OK) { return FR_DISK_ERR; } fs->wflag = 0U; if ((wsect - fs->fatbase) < fs->fsize) { /* Is it in the FAT area? */ nf = (UINT)fs->n_fats; for (; nf >= 2U; nf--) { /* Reflect the change to all FAT copies */ wsect += fs->fsize; (void)disk_write(fs->drv, fs->win, wsect, 1U); } } } return FR_OK; } #endif static FRESULT move_window ( FATFS* fs, /* File system object */ DWORD sector /* Sector number to make appearance in the fs->win[] */ ) { if (sector != fs->winsect) { /* Changed current window */ #if !_FS_READONLY if (sync_window(fs) != FR_OK) { return FR_DISK_ERR; } #endif if (disk_read(fs->drv, fs->win, sector, 1U) != RES_OK) { return FR_DISK_ERR; } fs->winsect = sector; } return FR_OK; } /*-----------------------------------------------------------------------*/ /* Synchronize file system and strage device */ /*-----------------------------------------------------------------------*/ #if !_FS_READONLY static FRESULT sync_fs ( /* FR_OK: successful, FR_DISK_ERR: failed */ FATFS* fs /* File system object */ ) { FRESULT res; BYTE *lp; res = sync_window(fs); if (res == FR_OK) { /* Update FSINFO sector if needed */ if (((fs->fs_type == FS_FAT32) != 0U) && ((fs->fsi_flag == 1U) != 0U)) { /* Create FSINFO structure */ mem_set(fs->win, 0, SS(fs)); lp = fs->win+BS_55AA; ST_WORD(lp, 0xAA55U); lp = fs->win+FSI_LeadSig; ST_DWORD(lp, 0x41615252); lp = fs->win+FSI_StrucSig; ST_DWORD(lp, 0x61417272); lp = fs->win+FSI_Free_Count; ST_DWORD(lp, fs->free_clust); lp = fs->win+FSI_Nxt_Free; ST_DWORD(lp, fs->last_clust); /* Write it into the FSINFO sector */ fs->winsect = fs->volbase + 1U; (void)disk_write(fs->drv, fs->win, fs->winsect, 1U); fs->fsi_flag = 0U; } /* Make sure that no pending write process in the physical drive */ if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)NULL) != RES_OK) { res = FR_DISK_ERR; } } return res; } #endif /*-----------------------------------------------------------------------*/ /* Get sector# from cluster# */ /*-----------------------------------------------------------------------*/ DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */ FATFS* fs, /* File system object */ DWORD clst /* Cluster# to be converted */ ) { DWORD LocalCluster = clst; DWORD res; LocalCluster -= 2U; if (LocalCluster >= (fs->n_fatent - 2)){ res = ((DWORD)0U); /* Invalid cluster# */ } else { res = ((LocalCluster * fs->csize) + fs->database); } return res; } /*-----------------------------------------------------------------------*/ /* FAT access - Read value of a FAT entry */ /*-----------------------------------------------------------------------*/ DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */ FATFS* fs, /* File system object */ DWORD clst /* Cluster# to get the link information */ ) { UINT wc, bc; BYTE *p,temp; DWORD Status = 0xFFFFFFFFU; if (((clst < 2U) != 0U) || ((clst >= fs->n_fatent) != 0U)){ /* Chack range */ Status = (DWORD)1; } else{ switch (fs->fs_type) { case FS_FAT12 : bc = (UINT)clst; bc += bc / 2; if (move_window(fs, fs->fatbase + ((DWORD)bc / (DWORD)SS(fs))) > 0){ break; } wc = (UINT)fs->win[bc % (UINT)SS(fs)]; bc++; if (move_window(fs, fs->fatbase + ((DWORD)bc / (DWORD)SS(fs))) > 0){ break; } temp = fs->win[bc % (UINT)SS(fs)] << 4; temp = temp << 4; wc |= temp; Status = (DWORD)(((clst & (DWORD)1) == (DWORD)(1U)) ? (DWORD)((DWORD)wc >> 4) : (DWORD)((DWORD)wc & (DWORD)0xFFFU)); break; case FS_FAT16 : if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) > 0){ break; } p = &fs->win[(clst * 2) % SS(fs)]; Status = (DWORD)LD_WORD(p); break; case FS_FAT32 : if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) > 0){ break; } p = &fs->win[(clst * 4) % SS(fs)]; Status = (LD_DWORD(p) & (DWORD)0x0FFFFFFFU); break; default : /* This is added for Misrac Compliance */ break; } } return Status; /* An error occurred at the disk I/O layer */ } /*-----------------------------------------------------------------------*/ /* FAT access - Change value of a FAT entry */ /*-----------------------------------------------------------------------*/ #if !_FS_READONLY FRESULT put_fat ( FATFS* fs, /* File system object */ DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */ DWORD val /* New value to mark the cluster */ ) { UINT bc; BYTE *p; FRESULT res; DWORD LocVal = val; if (((clst < 2U) != 0U) || ((clst >= fs->n_fatent) != 0U)) { /* Check range */ res = FR_INT_ERR; } else { switch (fs->fs_type) { case FS_FAT12 : bc = (UINT)clst; bc += bc / 2; res = move_window(fs, fs->fatbase + ((DWORD)bc / (DWORD)SS(fs))); if (res != FR_OK){ break; } p = &fs->win[bc % SS(fs)]; *p = (((clst & 1U) == 1U) ? ((*p & 0x0FU) | ((BYTE)LocVal << 4)) : (BYTE)LocVal); bc++; fs->wflag = 1U; res = move_window(fs, fs->fatbase + ((DWORD)bc / (DWORD)SS(fs))); if (res != FR_OK){ break; } p = &fs->win[bc % SS(fs)]; *p = (((clst & 1U) == 1U) ? (BYTE)(LocVal >> 4) : ((*p & 0xF0U) | ((BYTE)(LocVal >> 8) & 0x0FU))); break; case FS_FAT16 : res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))); if (res != FR_OK){ break; } p = &fs->win[(clst * 2) % SS(fs)]; ST_WORD(p, (WORD)LocVal); break; case FS_FAT32 : res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))); if (res != FR_OK){ break; } p = &fs->win[(clst * 4) % SS(fs)]; LocVal |= LD_DWORD(p) & 0xF0000000U; ST_DWORD(p, LocVal); break; default : res = FR_INT_ERR; break; } fs->wflag = 1U; } return res; } #endif /* !_FS_READONLY */ /*-----------------------------------------------------------------------*/ /* FAT handling - Remove a cluster chain */ /*-----------------------------------------------------------------------*/ #if !_FS_READONLY static FRESULT remove_chain ( FATFS* fs, /* File system object */ DWORD clst /* Cluster# to remove a chain from */ ) { FRESULT res; DWORD nxt; DWORD LocClst = clst; #if _USE_ERASE DWORD scl = LocClst, ecl = LocClst, rt[2]; #endif if (((LocClst < 2U) != 0U) || ((LocClst >= fs->n_fatent) != 0U)) { /* Check range */ res = FR_INT_ERR; } else { res = FR_OK; while (LocClst < fs->n_fatent) { /* Not a last link? */ nxt = get_fat(fs, LocClst); /* Get cluster status */ if (nxt == 0U) { break; /* Empty cluster? */ } if (nxt == 1U) { res = FR_INT_ERR; break; } /* Internal error? */ if (nxt == 0xFFFFFFFFU) { res = FR_DISK_ERR; break; } /* Disk error? */ res = put_fat(fs, LocClst, 0U); /* Mark the cluster "empty" */ if (res != FR_OK) { break; } if (fs->free_clust != 0xFFFFFFFFU) { /* Update FSInfo */ fs->free_clust++; fs->fsi_flag |= 1U; } #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 LocClst = nxt; /* Next cluster */ } } return res; } #endif /*-----------------------------------------------------------------------*/ /* FAT handling - Stretch or Create a cluster chain */ /*-----------------------------------------------------------------------*/ #if !_FS_READONLY static DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */ FATFS* fs, /* File system object */ DWORD clst /* Cluster# to stretch. 0 means create a new chain. */ ) { DWORD cs, ncl, scl; FRESULT res; if (clst == 0U) { /* Create a new chain */ scl = fs->last_clust; /* Get suggested start point */ if (((!scl) != 0U) || ((scl >= fs->n_fatent) != 0U)){ scl = 1U; } } else { /* Stretch the current chain */ cs = get_fat(fs, clst); /* Check the cluster status */ if (cs < 2U) { return (DWORD)1; /* Invalid value */ } if (cs == (DWORD)0xFFFFFFFFU) { return cs; /* A disk error occurred */ } if (cs < fs->n_fatent) { return cs; /* It is already followed by next cluster */ } scl = clst; } ncl = scl; /* Start cluster */ for (;;) { ncl++; /* Next cluster */ if (ncl >= fs->n_fatent) { /* Wrap around */ ncl = 2U; if (ncl > scl) { return 0; /* No free cluster */ } } cs = get_fat(fs, ncl); /* Get the cluster status */ if (cs == 0U) { break; /* Found a free cluster */ } if ((cs == 0xFFFFFFFFU) || (cs == 1U)) {/* An error occurred */ return cs; } if (ncl == scl) { return 0; /* No free cluster */ } } res = put_fat(fs, ncl, 0x0FFFFFFFU); /* Mark the new cluster "last link" */ if ((res == FR_OK) && (clst != 0U)) { res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */ } if (res == FR_OK) { fs->last_clust = ncl; /* Update FSINFO */ if (fs->free_clust != 0xFFFFFFFFU) { fs->free_clust--; fs->fsi_flag |= 1U; } } else { ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFFU : 1U; } return ncl; /* Return new cluster number or error code */ } #endif /* !_FS_READONLY */ /*-----------------------------------------------------------------------*/ /* FAT handling - Convert offset into cluster with link map table */ /*-----------------------------------------------------------------------*/ #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# */ ) { 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 == ((DWORD)0U)) { 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 */ /*-----------------------------------------------------------------------*/ /* Directory handling - Set directory index */ /*-----------------------------------------------------------------------*/ static FRESULT dir_sdi ( DIR* dp, /* Pointer to directory object */ UINT idx /* Index of directory table */ ) { WORD LocalDirectory = (WORD)idx; DWORD clst, sect; UINT ic; dp->index = (WORD)LocalDirectory; /* Current index */ clst = dp->sclust; /* Table start cluster (0:root) */ if (((clst == 1U) !=0) || ((clst >= dp->fs->n_fatent) !=0)) { /* Check start cluster range */ return FR_INT_ERR; } if ((clst == ((DWORD)0U)) && ((dp->fs->fs_type == FS_FAT32) != 0U)) { /* Replace cluster# 0 with root cluster# if in FAT32 */ clst = dp->fs->dirbase; } if (clst == 0U) { /* Static table (root-directory in FAT12/16) */ if (LocalDirectory >= dp->fs->n_rootdir) { /* Is index out of range? */ return FR_INT_ERR; } sect = dp->fs->dirbase; } else { /* Dynamic table (root-directory in FAT32 or sub-directory) */ ic = (UINT)((UINT)(SS(dp->fs) / SZ_DIR) * (UINT)dp->fs->csize); /* Entries per cluster */ while (LocalDirectory >= ic) { /* Follow cluster chain */ clst = get_fat(dp->fs, clst); /* Get next cluster */ if (clst == 0xFFFFFFFFU) { return FR_DISK_ERR; /* Disk error */ } if (((clst < 2U) != 0U) || ((clst >= dp->fs->n_fatent) != 0U)) { /* Reached to end of table or internal error */ return FR_INT_ERR; } LocalDirectory -= (WORD)ic; } sect = clust2sect(dp->fs, clst); } dp->clust = clst; /* Current cluster# */ if (sect == ((DWORD)0U)) {return FR_INT_ERR;} dp->sect = sect + ((DWORD)idx / ((DWORD)SS(dp->fs) / (DWORD)SZ_DIR)); /* Sector# of the directory entry */ dp->dir = dp->fs->win + ((idx % (SS(dp->fs) / SZ_DIR)) * SZ_DIR); /* Ptr to the entry in the sector */ return FR_OK; } /*-----------------------------------------------------------------------*/ /* Directory handling - Move directory table index next */ /*-----------------------------------------------------------------------*/ static FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */ DIR* dp, /* Pointer to the directory object */ s32 stretch /* 0: Do not stretch table, 1: Stretch table if needed */ ) { DWORD clst; UINT i; i = ((UINT)dp->index + (UINT)1U); if (((!(i & 0xFFFFU)) != 0U) || ((!dp->sect) != 0U)) { /* Report EOT when index has reached 65535 */ return FR_NO_FILE; } if ((!(i % (SS(dp->fs) / SZ_DIR))) != 0U) { /* Sector changed? */ dp->sect++; /* Next sector */ if ((!dp->clust) != 0U) { /* Static table */ if (i >= dp->fs->n_rootdir) { /* Report EOT if it reached end of static table */ return FR_NO_FILE; } } else { /* Dynamic table */ if (((i / (SS(dp->fs) / SZ_DIR)) & (dp->fs->csize - 1U)) == 0U) { /* Cluster changed? */ clst = get_fat(dp->fs, dp->clust); /* Get next cluster */ if (clst <= 1U) { return FR_INT_ERR; } if (clst == 0xFFFFFFFFU) { return FR_DISK_ERR; } if (clst >= dp->fs->n_fatent) { /* If it reached end of dynamic table, */ #if !_FS_READONLY UINT c; if (stretch == ((s32)0)) { return FR_NO_FILE; /* If do not stretch, report EOT */ } clst = create_chain(dp->fs, dp->clust); /* Stretch cluster chain */ if (clst == 0U) { return FR_DENIED; /* No free cluster */ } if (clst == 1U) { return FR_INT_ERR; } if (clst == 0xFFFFFFFFU) { return FR_DISK_ERR; } /* Clean-up stretched table */ if ((sync_window(dp->fs)) != 0U) { return FR_DISK_ERR;/* Flush disk access window */ } mem_set(dp->fs->win, 0, SS(dp->fs)); /* Clear window buffer */ dp->fs->winsect = clust2sect(dp->fs, clst); /* Cluster start sector */ for (c = 0U; c < dp->fs->csize; c++) { /* Fill the new cluster with 0 */ dp->fs->wflag = 1U; if ((sync_window(dp->fs)) != 0U) { return FR_DISK_ERR; } dp->fs->winsect++; } dp->fs->winsect -= c; /* Rewind window offset */ #else if (stretch == ((s32)0U)) { return FR_NO_FILE; /* If do not stretch, report EOT (this is to suppress warning) */ } return FR_NO_FILE; /* Report EOT */ #endif } dp->clust = clst; /* Initialize data for new cluster */ dp->sect = clust2sect(dp->fs, clst); } } } dp->index = (WORD)i; /* Current index */ dp->dir = dp->fs->win + ((i % (SS(dp->fs) / SZ_DIR)) * SZ_DIR); /* Current entry in the window */ return FR_OK; } /*-----------------------------------------------------------------------*/ /* Directory handling - Reserve directory entry */ /*-----------------------------------------------------------------------*/ #if !_FS_READONLY static FRESULT dir_alloc ( DIR* dp, /* Pointer to the directory object */ UINT nent /* Number of contiguous entries to allocate (1-21) */ ) { FRESULT res; UINT n; res = dir_sdi(dp, 0U); if (res == FR_OK) { n = 0U; do { res = move_window(dp->fs, dp->sect); if (res != FR_OK) { break; } if ((dp->dir[0] == DDE) || (dp->dir[0] == 0U)) { /* Is it a blank entry? */ n += (UINT)1; if (n == nent) { break; /* A block of contiguous entries is found */ } } else { n = 0U; /* Not a blank entry. Restart to search */ } res = dir_next(dp, 1); /* Next entry with table stretch enabled */ } while (res == FR_OK); } if (res == FR_NO_FILE) { res = FR_DENIED; /* No directory entry to allocate */ } return res; } #endif /*-----------------------------------------------------------------------*/ /* 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 = (DWORD)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 static const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN characters in the directory entry */ static s32 cmp_lfn ( /* 1:Matched, 0:Not matched */ WCHAR* lfnbuf, /* Pointer to the LFN to be compared */ BYTE* dir /* Pointer to the directory entry containing a part of LFN */ ) { UINT i, s; WCHAR wc, uc; 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 */ if (wc) { /* Last character has not been processed */ wc = ff_wtoupper(uc); /* Convert it to upper case */ if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */ return 0; /* Not matched */ } else { if (uc != 0xFFFF) { return 0; /* Check filler */ } } } while (++s < 13); /* Repeat until all characters in the entry are checked */ if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) { /* Last segment matched but different length */ return 0; } return 1; /* The part of LFN matched */ } static s32 pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */ WCHAR* lfnbuf, /* Pointer to the Unicode-LFN buffer */ BYTE* dir /* Pointer to the directory entry */ ) { UINT i, s; WCHAR wc, uc; i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */ s = 0; wc = 1; do { uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */ if (wc) { /* Last character has not been processed */ if (i >= _MAX_LFN) { return 0; /* Buffer overflow? */ } lfnbuf[i++] = wc = uc; /* Store it */ } else { if (uc != 0xFFFF) { return 0; /* Check filler */ } } } while (++s < 13); /* Read all character in the entry */ 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; } return 1; } #if !_FS_READONLY static void fit_lfn ( const WCHAR* lfnbuf, /* Pointer to the LFN buffer */ BYTE* dir, /* Pointer to the directory entry */ BYTE ord, /* LFN order (1-20) */ BYTE sum /* SFN sum */ ) { UINT i, s; WCHAR wc; dir[LDIR_Chksum] = sum; /* Set check sum */ dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */ dir[LDIR_Type] = 0; ST_WORD(dir+LDIR_FstClusLO, 0); i = (ord - 1) * 13; /* Get offset in the LFN buffer */ s = wc = 0; do { if (wc != 0xFFFF) { wc = lfnbuf[i++]; /* Get an effective character */ } ST_WORD(dir+LfnOfs[s], wc); /* Put it */ if (!wc) { wc = 0xFFFF; /* Padding characters following last character */ } } while (++s < 13); if (wc == 0xFFFF || !lfnbuf[i]) { ord |= LLE; /* Bottom LFN part is the start of LFN sequence */ } dir[LDIR_Ord] = ord; /* Set the LFN order */ } #endif #endif /*-----------------------------------------------------------------------*/ /* Create numbered name */ /*-----------------------------------------------------------------------*/ #if _USE_LFN static void gen_numname ( BYTE* dst, /* Pointer to the buffer to store numbered SFN */ const BYTE* src, /* Pointer to SFN */ const WCHAR* lfn, /* Pointer to LFN */ UINT seq /* Sequence number */ ) { BYTE ns[8], c; UINT i, j; mem_cpy(dst, src, 11); if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */ WCHAR wc; DWORD sr = seq; while (*lfn) { /* Create a CRC */ wc = *lfn++; for (i = 0; i < 16; i++) { sr = (sr << 1) + (wc & 1); wc >>= 1; if (sr & 0x10000) { sr ^= 0x11021; } } } seq = (UINT)sr; } /* itoa (hexdecimal) */ i = 7; do { c = (seq % 16) + '0'; if (c > '9') { c += 7; } ns[i--] = c; seq /= 16; } while (seq); ns[i] = '~'; /* Append the number */ for (j = 0; j < i && dst[j] != ' '; j++) { if (IsDBCS1(dst[j])) { if (j == i - 1) { break; } j++; } } do { dst[j++] = (i < 8) ? ns[i++] : ' '; } while (j < 8); } #endif /*-----------------------------------------------------------------------*/ /* Calculate sum of an SFN */ /*-----------------------------------------------------------------------*/ #if _USE_LFN static BYTE sum_sfn ( const BYTE* dir /* Pointer to the SFN entry */ ) { BYTE sum = 0; UINT n = 11; do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n); return sum; } #endif /*-----------------------------------------------------------------------*/ /* Directory handling - Find an object in the directory */ /*-----------------------------------------------------------------------*/ static FRESULT dir_find ( DIR* dp /* Pointer to the directory object linked to the file name */ ) { FRESULT res; BYTE c, *directory; #if _USE_LFN BYTE a, ord, sum; #endif res = dir_sdi(dp, 0U); /* Rewind directory object */ if (res == FR_OK) { #if _USE_LFN ord = sum = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */ #endif do { res = move_window(dp->fs, dp->sect); if (res != FR_OK) { break; } directory = dp->dir; /* Ptr to the directory entry of current index */ c = *(directory+DIR_Name); if (c == 0U) { res = FR_NO_FILE; break; } /* Reached to end of table */ #if _USE_LFN /* LFN configuration */ a = directory[DIR_Attr] & AM_MASK; if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */ } else { if (a == AM_LFN) { /* An LFN entry is found */ if (dp->lfn) { if (c & LLE) { /* Is it start of LFN sequence? */ sum = directory[LDIR_Chksum]; c &= ~LLE; ord = c; /* LFN start order */ dp->lfn_idx = dp->index; /* Start index of LFN */ } /* Check validity of the LFN entry and compare it with given name */ ord = (c == ord && sum == directory[LDIR_Chksum] && cmp_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF; } } else { /* An SFN entry is found */ if (!ord && sum == sum_sfn(directory)) { break; /* LFN matched? */ } if (!(dp->fn[NS] & NS_LOSS) && !mem_cmp(dir, dp->fn, 11)) { break; /* SFN matched? */ } ord = 0xFF; dp->lfn_idx = 0xFFFF; /* Reset LFN sequence */ } } #else /* Non LFN configuration */ if (((!mem_cmp(directory, dp->fn, 11U)) != 0)&&((!(*(directory+DIR_Attr) & AM_VOL)) != 0U)) { /* Is it a valid entry? */ break; } #endif res = dir_next(dp, 0); /* Next entry */ } while (res == FR_OK); } return res; } /*-----------------------------------------------------------------------*/ /* Read an object from the directory */ /*-----------------------------------------------------------------------*/ #if _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 static FRESULT dir_read ( DIR* dp, /* Pointer to the directory object */ s32 vol /* Filtered by 0:file/directory or 1:volume label */ ) { FRESULT res; BYTE a, c, *directory; #if _USE_LFN BYTE ord = 0xFF, sum = 0xFF; #endif res = FR_NO_FILE; while ((dp->sect) != 0U) { res = move_window(dp->fs, dp->sect); if (res != FR_OK) { break; } directory = dp->dir; /* Ptr to the directory entry of current index */ c = *(directory+DIR_Name); if (c == 0U) { res = FR_NO_FILE; break; } /* Reached to end of table */ a = (*(directory+DIR_Attr)) & AM_MASK; #if _USE_LFN /* LFN configuration */ if (c == DDE || (!_FS_RPATH && c == '.') || (s32)(a == AM_VOL) != vol) { /* An entry without valid data */ ord = 0xFFU; } else { if (a == AM_LFN) { /* An LFN entry is found */ if (c & LLE) { /* Is it start of LFN sequence? */ sum = directory[LDIR_Chksum]; c &= ~LLE; ord = c; dp->lfn_idx = dp->index; } /* Check LFN validity and capture it */ ord = (c == ord && sum == directory[LDIR_Chksum] && pick_lfn(dp->lfn, directory)) ? ord - 1 : 0xFF; } else { /* An SFN entry is found */ if (ord || sum != sum_sfn(directory)) { /* Is there a valid LFN? */ dp->lfn_idx = 0xFFFFU; /* It has no LFN. */ } break; } } #else /* Non LFN configuration */ if (((c != DDE) != 0U) && ((_FS_RPATH || (c != (BYTE)'.')) != 0) && (a != AM_LFN) && (((a == AM_VOL) == vol)!= 0U)) { /* Is it a valid entry? */ break; } #endif res = dir_next(dp, 0); /* Next entry */ if (res != FR_OK) { break; } } if (res != FR_OK) { dp->sect = 0U; } return res; } #endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */ /*-----------------------------------------------------------------------*/ /* Register an object to the directory */ /*-----------------------------------------------------------------------*/ #if !_FS_READONLY static FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */ DIR* dp /* Target directory with object name to be created */ ) { FRESULT res; #if _USE_LFN /* LFN configuration */ UINT n, nent; BYTE sn[12], *fn, sum; WCHAR *lfn; fn = dp->fn; lfn = dp->lfn; mem_cpy(sn, fn, 12); 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; dp->lfn = 0; /* Find only SFN */ for (n = 1; n < 100; n++) { gen_numname(fn, sn, lfn, n); /* Generate a numbered name */ res = dir_find(dp); /* Check if the name collides with existing SFN */ if (res != FR_OK) { break; } } if (n == 100) { return FR_DENIED; /* Abort if too many collisions */ } if (res != FR_NO_FILE) { return res; /* Abort if the result is other than 'not collided' */ } fn[NS] = sn[NS]; dp->lfn = lfn; } if (sn[NS] & NS_LFN) { /* When LFN is to be created, allocate entries for an SFN + LFNs. */ for (n = 0; lfn[n]; n++) ; nent = (n + 25) / 13; } else { /* Otherwise allocate an entry for an SFN */ nent = 1; } res = dir_alloc(dp, nent); /* Allocate entries */ if (res == FR_OK && --nent) { /* Set LFN entry if needed */ res = dir_sdi(dp, dp->index - nent); if (res == FR_OK) { sum = sum_sfn(dp->fn); /* Sum value of the SFN tied to the LFN */ do { /* Store LFN entries in bottom first */ res = move_window(dp->fs, dp->sect); if (res != FR_OK) { break; } fit_lfn(dp->lfn, dp->dir, (BYTE)nent, sum); dp->fs->wflag = 1; res = dir_next(dp, 0); /* Next entry */ } while (res == FR_OK && --nent); } } #else /* Non LFN configuration */ res = dir_alloc(dp, 1U); /* Allocate an entry for SFN */ #endif if (res == FR_OK) { /* Set SFN entry */ res = move_window(dp->fs, dp->sect); if (res == FR_OK) { mem_set(dp->dir, 0, SZ_DIR); /* Clean the entry */ mem_cpy(dp->dir, dp->fn, 11U); /* Put SFN */ #if _USE_LFN dp->dir[DIR_NTres] = *(dp->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */ #endif dp->fs->wflag = 1U; } } return res; } #endif /* !_FS_READONLY */ /*-----------------------------------------------------------------------*/ /* Remove an object from the directory */ /*-----------------------------------------------------------------------*/ #if !_FS_READONLY && !_FS_MINIMIZE static FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */ DIR* dp /* Directory object pointing the entry to be removed */ ) { FRESULT res; WORD temp; #if _USE_LFN /* LFN configuration */ UINT i; i = dp->index; /* SFN index */ res = dir_sdi(dp, (WORD)((dp->lfn_idx == 0xFFFF) ? i : dp->lfn_idx)); /* Goto the SFN or top of the LFN entries */ if (res == FR_OK) { do { res = move_window(dp->fs, dp->sect); if (res != FR_OK) { break; } mem_set(dp->dir, 0, SZ_DIR); /* Clear and mark the entry "deleted" */ *dp->dir = DDE; dp->fs->wflag = 1; if (dp->index >= i) { break; /* When reached SFN, all entries of the object has been deleted. */ } res = dir_next(dp, 0); /* Next entry */ } while (res == FR_OK); if (res == FR_NO_FILE) { res = FR_INT_ERR; } } #else /* Non LFN configuration */ temp = dp->index; res = dir_sdi(dp, temp); if (res == FR_OK) { res = move_window(dp->fs, dp->sect); if (res == FR_OK) { mem_set(dp->dir, 0, SZ_DIR); /* Clear and mark the entry "deleted" */ *dp->dir = DDE; dp->fs->wflag = 1U; } } #endif return res; } #endif /* !_FS_READONLY */ /*-----------------------------------------------------------------------*/ /* Get file information from directory entry */ /*-----------------------------------------------------------------------*/ #if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 static void get_fileinfo ( /* No return code */ DIR* dp, /* Pointer to the directory object */ FILINFO* fno /* Pointer to the file information to be filled */ ) { UINT i; TCHAR *p, c; p = fno->fname; if (dp->sect!=((DWORD)0U)) { /* Get SFN */ BYTE *dir = dp->dir; i = 0U; while (i < 11U) { /* Copy name body and extension */ c = (TCHAR)(*(dir+i)); i += (UINT)1; if (c == ' ') { continue; /* Skip padding spaces */ } if (c == (BYTE)NDDE) { c = (TCHAR)DDE; /* Restore replaced DDE character */ } if (i == (UINT)9) { *p = '.'; /* Insert a . if extension is exist */ p += 1U; } #if _USE_LFN if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9U ? NS_EXT : NS_BODY))) { c += 0x20; /* To lower */ } #if _LFN_UNICODE if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dir[i])) { c = c << 8 | dir[i++]; } c = ff_convert(c, 1); /* OEM -> Unicode */ if (c == ((TCHAR)0U)) { c = '?'; } #endif #endif *p = c; p += 1U; } fno->fattrib = (*(dir+DIR_Attr)); /* Attribute */ fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */ fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */ fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */ } *p = 0; /* Terminate SFN string by a \0 */ #if _USE_LFN if (fno->lfname) { WCHAR w, *lfn; i = 0; p = fno->lfname; if (dp->sect && fno->lfsize && dp->lfn_idx != 0xFFFF) { /* Get LFN if available */ lfn = dp->lfn; while ((w = *lfn++) != 0) { /* Get an LFN character */ #if !_LFN_UNICODE w = ff_convert(w, 0); /* Unicode -> OEM */ if (!w) { i = 0; break; } /* No LFN if it could not be converted */ if (DF1S && w >= 0x100) { /* Put 1st byte if it is a DBC (always false on SBCS cfg) */ p[i++] = (TCHAR)(w >> 8); } #endif if (i >= fno->lfsize - 1) { i = 0; break; } /* No LFN if buffer overflow */ p[i++] = (TCHAR)w; } } p[i] = 0; /* Terminate LFN string by a \0 */ } #endif } #endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2*/ /*-----------------------------------------------------------------------*/ /* Pick a segment and create the object name in directory form */ /*-----------------------------------------------------------------------*/ static FRESULT create_name ( DIR* dp, /* Pointer to the directory object */ const TCHAR** path /* Pointer to pointer to the segment in the path string */ ) { #if _USE_LFN /* LFN configuration */ BYTE b, cf; WCHAR w, *lfn; UINT i, ni, si, di; const BYTE *p; /* Create LFN in Unicode */ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */ lfn = dp->lfn; si = di = 0; for (;;) { w = p[si++]; /* Get a character */ if (w < ' ' || w == '/' || w == '\\') { break; /* Break on end of segment */ } if (di >= _MAX_LFN) { /* Reject too long name */ return FR_INVALID_NAME; } #if !_LFN_UNICODE w &= 0xFF; if (IsDBCS1(w)) { /* 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 ANSI/OEM to Unicode */ if (!w) { return FR_INVALID_NAME; /* Reject invalid code */ } #endif if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) {/* Reject illegal characters for LFN */ return FR_INVALID_NAME; } lfn[di++] = w; /* Store the Unicode character */ } *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] == '.')) { lfn[di] = 0; for (i = 0; i < 11; i++) dp->fn[i] = (i < di) ? '.' : ' '; dp->fn[i] = cf | NS_DOT; /* This is a dot entry */ return FR_OK; } #endif while (di) { /* Strip trailing spaces and dots */ w = lfn[di-1]; if (w != ' ' && w != '.') { break; } di--; } if (!di) { return FR_INVALID_NAME; /* Reject nul string */ } lfn[di] = 0; /* LFN is created */ /* Create SFN in directory form */ mem_set(dp->fn, ' ', 11); for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */ if (si) { cf |= NS_LOSS | NS_LFN; } while (di && lfn[di - 1] != '.') { di--; /* Find extension (di<=si: no extension) */ } b = i = 0; ni = 8; for (;;) { w = lfn[si++]; /* Get an LFN character */ if ((!w) != 0U) { break; /* Break on end of the LFN */ } if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */ cf |= NS_LOSS | NS_LFN; continue; } if (i >= ni || si == di) { /* Extension or end of SFN */ if (ni == 11) { /* Long extension */ cf |= NS_LOSS | NS_LFN; break; } if (si != di) { cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */ } if (si > di) { break; /* No extension */ } si = di; i = 8; ni = 11; /* Enter extension section */ b <<= 2; continue; } if (w >= 0x80) { /* Non ASCII character */ #ifdef _EXCVT w = ff_convert(w, 0); /* Unicode -> OEM code */ if (w) { w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */ } #else w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */ #endif cf |= NS_LFN; /* Force create LFN entry */ } if (DF1S && w >= 0x100) { /* Double byte character (always false on SBCS cfg) */ if (i >= ni - 1) { cf |= NS_LOSS | NS_LFN; i = ni; continue; } dp->fn[i++] = (BYTE)(w >> 8); } else { /* Single byte character */ if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal characters for SFN */ w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */ } else { if (IsUpper(w)) { /* ASCII large capital */ b |= 2; } else { if (IsLower(w)) { /* ASCII small capital */ b |= 1; w -= 0x20; } } } } dp->fn[i++] = (BYTE)w; } if (dp->fn[0] == DDE) { dp->fn[0] = NDDE; /* If the first character collides with deleted mark, replace it with 0x05 */ } if (ni == 8) { b <<= 2; } if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) { /* Create LFN entry when there are composite capitals */ cf |= NS_LFN; } if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended character, NT flags are created */ if ((b & 0x03) == 0x01) { cf |= NS_EXT; /* NT flag (Extension has only small capital) */ } if ((b & 0x0C) == 0x04) { cf |= NS_BODY; /* NT flag (Filename has only small capital) */ } } dp->fn[NS] = cf; /* SFN is created */ return FR_OK; #else /* Non-LFN configuration */ BYTE b, c, d, *sfn; UINT ni, si, i; const BYTE *p; p = *path; /* Create file name in directory form */ for (; (*p == (BYTE)'/') || (*p == (BYTE)'\\'); ) {p++;}/* Strip duplicated separator */ sfn = dp->fn; mem_set(sfn, (s32)' ', 11U); si = 0U; i = 0U; b = 0U; ni = 8U; #if _FS_RPATH if (p[si] == '.') { /* Is this a dot entry? */ for (;;) { c = (BYTE)p[si++]; if (c != '.' || si >= 3) { break; } sfn[i++] = c; } if (c != '/' && c != '\\' && c > ' ') { return FR_INVALID_NAME; } *path = &p[si]; /* Return pointer to the next segment */ sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */ return FR_OK; } #endif for (;;) { c = ((BYTE)(*(p+si))); si+=1U; if (((c <= (BYTE)' ') != 0) || ((c == (BYTE)'/') != 0) || ((c == (BYTE)'\\') != 0)) { break; /* Break on end of segment */ } if ((c == (BYTE)'.') || (i >= ni)) { if ((ni != 8U) || (c != (BYTE)'.')) { return FR_INVALID_NAME; } i = 8U; ni = 11U; b <<= 2U; continue; } if (c >= 0x80U) { /* Extended character? */ b |= 3U; /* Eliminate NT flag */ #ifdef _EXCVT c = ExCvt[c - 0x80U]; /* To upper extended characters (SBCS cfg) */ #else #if !DF1S return FR_INVALID_NAME; /* Reject extended characters (ASCII cfg) */ #endif #endif } if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */ d = ((BYTE)(*(p+si))); /* Get 2nd byte */ si+=1U; if ((!IsDBCS2(d)) || (i >= (ni - 1))) { /* Reject invalid DBC */ return FR_INVALID_NAME; } *(sfn+i) = c; i+=1U; *(sfn+i) = d; i+=1U; } else { /* Single byte code */ if ((chk_chr("\"*+,:;<=>\?[]|\x7F", c)) != 0) { /* Reject illegal chrs for SFN */ return FR_INVALID_NAME; } if (IsUpper(c)) { /* ASCII large capital? */ b |= 2U; } else { if (IsLower(c)) { /* ASCII small capital? */ b |= 1U; c -= 0x20U; } } *(sfn+i) = c; i+=1U; } } *path = (p+si); /* Return pointer to the next segment */ c = (c <= (BYTE)' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ if (i == (UINT)0U){ return FR_INVALID_NAME; /* Reject nul string */ } if ((*(sfn+0)) == DDE){ *(sfn+0) = NDDE; /* When first char collides with 0xE5, replace it with 0x05 */ } if (ni == 8U){ b <<= 2U; } if ((b & 0x03U) == 0x01U){ c |= NS_EXT; /* NT flag (Name extension has only small capital) */ } if ((b & 0x0CU) == 0x04U){ c |= NS_BODY; /* NT flag (Name body has only small capital) */ } *(sfn+NS) = c; /* Store NT flag, File name is created */ return FR_OK; #endif } /*-----------------------------------------------------------------------*/ /* Follow a file path */ /*-----------------------------------------------------------------------*/ static FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */ DIR* dp, /* Directory object to return last directory and found object */ const TCHAR* path /* Full-path string to find a file or directory */ ) { FRESULT res; BYTE *directory, NameStatus; TCHAR Status = *path; const TCHAR *LocPath = path; #if _FS_RPATH if (*LocPath == '/' || *LocPath == '\\') { /* There is a heading separator */ LocPath++; dp->sclust = 0; /* Strip it and start from the root dir */ } else { /* No heading separator */ dp->sclust = dp->fs->cdir; /* Start from the current dir */ } #else if ((*LocPath == '/') || (*LocPath == '\\')) { /* Strip heading separator if exist */ LocPath++; } dp->sclust = 0U; /* Start from the root dir */ #endif Status = *LocPath; if ((UINT)Status < (UINT)' ') { /* Null path name is the origin directory itself */ res = dir_sdi(dp, 0U); dp->dir = 0U; } else { /* Follow path */ for (;;) { res = create_name(dp, &LocPath); /* Get a segment name of the path */ if (res != FR_OK) { break; } res = dir_find(dp); /* Find an object with the sagment name */ NameStatus = *(dp->fn+NS); if (res != FR_OK) { /* Failed to find the object */ if (res == FR_NO_FILE) { /* Object is not found */ if (_FS_RPATH && ((NameStatus & NS_DOT) != 0U)) { /* If dot entry is not exist, */ dp->sclust = 0U; dp->dir = 0U; /* it is the root directory and stay there */ if ((!(NameStatus & NS_LAST))!= 0U) { continue; /* Continue to follow if not last segment */ } res = FR_OK; /* Ended at the root directroy. Function completed. */ } else { /* Could not find the object */ if ((!(NameStatus & NS_LAST)) != 0U) { res = FR_NO_PATH; /* Adjust error code if not last segment */ } } } break; } if ((NameStatus & NS_LAST) != 0U) { break; /* Last segment matched. Function completed. */ } directory = dp->dir; /* Follow the sub-directory */ if ((!((*(directory+DIR_Attr)) & AM_DIR)) != 0U) { /* It is not a sub-directory and cannot follow */ res = FR_NO_PATH; break; } dp->sclust = (DWORD)ld_clust(dp->fs, directory); } } return res; } /*-----------------------------------------------------------------------*/ /* Get logical drive number from path name */ /*-----------------------------------------------------------------------*/ static s32 get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */ const TCHAR** path /* Pointer to pointer to the path name */ ) { const TCHAR *tp, *tt; UINT i; s32 vol = -1; if ((*path)!=NULL) { /* If the pointer is not a null */ tt = *path; for (; (*tt >= '!') && (*tt != ':'); ) {tt += 1U;} /* Find ':' in the path */ if (*tt == ':') { /* If a ':' is exist in the path name */ tp = *path; i = (*tp - '0'); tp += 1U; if ((i < 10U) && (tp == tt)) { /* Is there a numeric drive id? */ if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */ vol = (s32)i; tt += 1U; *path = ((TCHAR *)tt); } } else { /* No numeric drive number */ #if _STR_VOLUME_ID /* Find string drive id */ static const char* const str[] = {_VOLUME_STRS}; const char *sp; char c; TCHAR tc; i = 0; tt += 1U; do { sp = str[i]; tp = *path; do { /* Compare a string drive id with path name */ c = *sp++; tc = *tp++; if (IsLower(tc)) { tc -= 0x20; } } while (c && (TCHAR)c == tc); } while ((c || tp != tt) && ++i < _VOLUMES); /* Repeat for each id until pattern match */ if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */ vol = (s32)i; *path = tt; } #endif } } else { #if _FS_RPATH && _VOLUMES >= 2 vol = CurrVol; /* Current drive */ #else vol = 0; /* Drive 0 */ #endif } } return vol; } /*-----------------------------------------------------------------------*/ /* Load a sector and check if it is an FAT boot sector */ /*-----------------------------------------------------------------------*/ static BYTE check_fs ( /* 0:FAT boor sector, 1:Valid boor sector but not FAT, 2:Not a boot sector, 3:Disk error */ FATFS* fs, /* File system object */ DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */ ) { fs->wflag = 0U; fs->winsect = 0xFFFFFFFFU; /* Invaidate window */ if (move_window(fs, sect) != FR_OK) { /* Load boot record */ return (BYTE)3; } if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55U) { /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */ return (BYTE)2; } if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFFU) == 0x544146U) { /* Check "FAT" string */ return (BYTE)0; } if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFFU) == 0x544146U) { /* Check "FAT" string */ return (BYTE)0; } return (BYTE)1; } /*-----------------------------------------------------------------------*/ /* Find logical drive and check if the volume is mounted */ /*-----------------------------------------------------------------------*/ static FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */ FATFS** rfs, /* Pointer to pointer to the found file system object */ const TCHAR** path, /* Pointer to pointer to the path name (drive number) */ BYTE wmode /* !=0: Check write protection for write access */ ) { static WORD Fsid; /* File system mount ID */ BYTE fmt; s32 vol; DSTATUS stat; DWORD bsect, fasize, tsect, sysect, nclst, szbfat; WORD nrsv; FATFS *fs; /* Get logical drive number from the path name */ (*rfs) = 0; vol = get_ldnumber(path); if (vol < 0) {return FR_INVALID_DRIVE;} /* Check if the file system object is valid or not */ fs = FatFs[vol]; /* Get pointer to the file system object */ if ((!fs) != 0U) { return FR_NOT_ENABLED; /* Is the file system object available? */ } ENTER_FF(fs); /* Lock the volume */ *rfs = fs; /* Return pointer to the file system object */ if (fs->fs_type != 0U) { /* If the volume has been mounted */ stat = disk_status(fs->drv); if ((!(stat & STA_NOINIT)) != 0U) { /* and the physical drive is kept initialized */ if (!_FS_READONLY && (wmode != (BYTE)0U) && ((stat & STA_PROTECT) != (BYTE)0U)) {/* Check write protection if needed */ return FR_WRITE_PROTECTED; } return FR_OK; /* The file system object is valid */ } } /* The file system object is not valid. */ /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */ fs->fs_type = 0U; /* Clear the file system object */ 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) != (BYTE)0U) { /* Check if the initialization succeeded */ return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */ } if (!_FS_READONLY && (wmode != (BYTE)0U)&& ((stat & STA_PROTECT) != (BYTE)0U)) { /* Check disk write protection if needed */ return FR_WRITE_PROTECTED; } #if _MAX_SS != _MIN_SS /* Get sector size (multiple sector size cfg only) */ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) < _MIN_SS || SS(fs) > _MAX_SS) { return FR_DISK_ERR; } #endif /* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */ bsect = 0U; fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT boot sector as SFD */ if ((fmt == 1U) || (((!fmt) != (BYTE)0U) && ((LD2PT(vol)) != 0U))) { /* Not an FAT boot sector or forced partition number */ UINT i; DWORD br[4]; for (i = 0U; i < 4U; i++) { /* Get partition offset */ BYTE *pt = fs->win+MBR_Table + ((WORD)i * (WORD)SZ_PTE); br[i] = ((*(pt+4)) != (BYTE)0U) ? LD_DWORD((pt+8U)) : 0U; } i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */ if (i != 0U) { i--; } do { /* Find an FAT volume */ bsect = br[i]; fmt = (bsect!=(DWORD)0U) ? check_fs(fs, bsect) : 2U; /* Check the partition */ i += (UINT)1; } while ((!LD2PT(vol)) && (fmt != (BYTE)0U)&& (i < 4U)); } if (fmt == 3U) { return FR_DISK_ERR; /* An error occured in the disk I/O layer */ } if (fmt != 0U) { return FR_NO_FILESYSTEM; /* No FAT volume is found */ } /* An FAT volume is found. Following code initializes the file system object */ if (LD_WORD(fs->win+BPB_BytsPerSec) != (WORD)SS(fs)) { /* (BPB_BytsPerSec must be equal to the physical sector size) */ return FR_NO_FILESYSTEM; } fasize = ((DWORD)LD_WORD(fs->win+BPB_FATSz16)); /* Number of sectors per FAT */ if ((!fasize) != 0U) { fasize = (DWORD)LD_DWORD(fs->win+BPB_FATSz32); } fs->fsize = fasize; fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */ if ((fs->n_fats != 1U) && (fs->n_fats != 2U)) { /* (Must be 1 or 2) */ return FR_NO_FILESYSTEM; } fasize *= (DWORD)fs->n_fats; /* Number of sectors for FAT area */ fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */ if (((!fs->csize) != 0U) || ((fs->csize & (fs->csize - 1U)) != 0U)) { /* (Must be power of 2) */ return FR_NO_FILESYSTEM; } fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */ if ((fs->n_rootdir % (SS(fs) / SZ_DIR)) != 0U) { /* (Must be sector aligned) */ return FR_NO_FILESYSTEM; } tsect = ((DWORD)LD_WORD(fs->win+BPB_TotSec16)); /* Number of sectors on the volume */ if ((!tsect) != 0U) { tsect = (DWORD)LD_DWORD(fs->win+BPB_TotSec32); } nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */ if ((!nrsv) != 0U) { return FR_NO_FILESYSTEM; /* (Must not be 0) */ } /* Determine the FAT sub type */ sysect = (DWORD)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) / ((DWORD)fs->csize); /* Number of clusters */ if ((!nclst) != 0U) { return FR_NO_FILESYSTEM; /* (Invalid volume size) */ } fmt = FS_FAT12; if (nclst >= MIN_FAT16) { fmt = FS_FAT16; } if (nclst >= MIN_FAT32) { fmt = FS_FAT32; } /* Boundaries and Limits */ fs->n_fatent = nclst + 2U; /* Number of FAT entries */ fs->volbase = bsect; /* Volume start sector */ fs->fatbase = bsect + nrsv; /* FAT start sector */ fs->database = bsect + sysect; /* Data start sector */ if (fmt == FS_FAT32) { if (fs->n_rootdir != 0U) { return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */ } fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */ szbfat = fs->n_fatent * 4U; /* (Needed FAT size) */ } else { if ((!fs->n_rootdir) != 0U) { return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */ } fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */ szbfat = (((DWORD)fmt) == FS_FAT16) ? /* (Needed FAT size) */ (fs->n_fatent * ((DWORD)2U)) : (((fs->n_fatent * (DWORD)3U) / (DWORD)2U) + (fs->n_fatent & (DWORD)1U)); } if (fs->fsize < ((szbfat + (SS(fs) - 1)) / SS(fs))) { /* (BPB_FATSz must not be less than needed) */ return FR_NO_FILESYSTEM; } #if !_FS_READONLY /* Initialize cluster allocation information */ fs->last_clust = 0xFFFFFFFFU; fs->free_clust = 0xFFFFFFFFU; /* Get fsinfo if available */ fs->fsi_flag = 0x80U; #if (_FS_NOFSINFO & 3) != 3U if ((fmt == FS_FAT32) /* Enable FSINFO only if FAT32 and BPB_FSInfo is 1 */ && (LD_WORD(fs->win+BPB_FSInfo) == 1U) && (move_window(fs, bsect + 1U) == FR_OK)) { fs->fsi_flag = 0U; if ((LD_WORD(fs->win+BS_55AA) == 0xAA55U) /* Load FSINFO data if available */ && (LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252U) && (LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272U)) { #if (_FS_NOFSINFO & 1) == 0 fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count); #endif #if (_FS_NOFSINFO & 2) == 0 fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free); #endif } } #endif #endif fs->fs_type = fmt; /* FAT sub-type */ Fsid += (WORD)1; fs->id = Fsid; /* File system mount ID */ #if _FS_RPATH fs->cdir = 0; /* Set current directory to root */ #endif #if _FS_LOCK /* Clear file lock semaphores */ clear_lock(fs); #endif return FR_OK; } /*-----------------------------------------------------------------------*/ /* Check if the file/directory object is valid or not */ /*-----------------------------------------------------------------------*/ static FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */ void* obj /* Pointer to the object FIL/DIR to check validity */ ) { FIL *fil = (FIL *)(void *)obj; /* Assuming offset of .fs and .id in the FIL/DIR structure is identical */ FRESULT res; if (((!fil) != 0U) || ((!fil->fs) != 0U) || ((!fil->fs->fs_type) != 0U) || (fil->fs->id != fil->id)) { res = FR_INVALID_OBJECT; } else { ENTER_FF(fil->fs); /* Lock file system */ if ((disk_status(fil->fs->drv) & STA_NOINIT) != (BYTE)0U) { res = FR_NOT_READY; } else { res = FR_OK; } } return res; } /*-------------------------------------------------------------------------- Public Functions --------------------------------------------------------------------------*/ /*-----------------------------------------------------------------------*/ /* Mount/Unmount a Logical Drive */ /*-----------------------------------------------------------------------*/ FRESULT f_mount ( FATFS* fs, /* Pointer to the file system object (NULL:unmount)*/ const TCHAR* path, /* Logical drive number to be mounted/unmounted */ BYTE opt /* 0:Do not mount (delayed mount), 1:Mount immediately */ ) { FATFS *cfs; s32 vol; FRESULT res; const TCHAR *rp = path; vol = get_ldnumber(&rp); if (vol < 0) {return FR_INVALID_DRIVE;} cfs = FatFs[vol]; /* Pointer to fs object */ if (cfs != 0U) { #if _FS_LOCK clear_lock(cfs); #endif #if _FS_REENTRANT /* Discard sync object of the current volume */ if ((!ff_del_syncobj(cfs->sobj)) != 0U) { return FR_INT_ERR; } #endif cfs->fs_type = 0U; /* Clear old fs object */ } if (fs != 0U) { fs->fs_type = 0U; /* Clear new fs object */ #if _FS_REENTRANT /* Create sync object for the new volume */ if ((!ff_cre_syncobj((BYTE)vol, &fs->sobj)) != 0U) { return FR_INT_ERR; } #endif } FatFs[vol] = fs; /* Register new fs object */ if (((!fs) != 0U) || (opt != 1U)) { return FR_OK; /* Do not mount now, it will be mounted later */ } res = find_volume(&fs, &path, 0U); /* Force mounted the volume */ LEAVE_FF(fs, res); } /*-----------------------------------------------------------------------*/ /* Open or Create a File */ /*-----------------------------------------------------------------------*/ FRESULT f_open ( FIL* fp, /* Pointer to the blank file object */ const TCHAR* path, /* Pointer to the file name */ BYTE mode /* Access mode and file open mode flags */ ) { FRESULT res; DIR dj = {0}; BYTE *dir; DEF_NAMEBUF; if ((!fp) != 0U) { return FR_INVALID_OBJECT; } fp->fs = NULL; /* Clear file object */ /* Get logical drive number */ #if !_FS_READONLY mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW; res = find_volume(&dj.fs, &path, (BYTE)(mode & ~FA_READ)); #else mode &= FA_READ; res = find_volume(&dj.fs, &path, 0U); #endif if (res == FR_OK) { INIT_BUF(dj); res = follow_path(&dj, path); /* Follow the file path */ dir = dj.dir; #if !_FS_READONLY /* R/W configuration */ if (res == FR_OK) { if ((!dir) != 0U) {/* Default directory 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)) != (BYTE)0U) { 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); #endif } 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)) != 0U) { /* Cannot overwrite it (R/O or DIR) */ res = FR_DENIED; } else { if ((mode & FA_CREATE_NEW) != (BYTE)0U) { /* Cannot create as new file */ res = FR_EXIST; } } } if ((res == FR_OK) && ((mode & FA_CREATE_ALWAYS) != (BYTE)0U)) { /* Truncate it if overwrite mode */ dw = get_fattime(); /* Created time */ ST_DWORD(dir+DIR_CrtTime, dw); (*(dir+DIR_Attr)) = 0U; /* Reset attribute */ ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */ cl = ld_clust(dj.fs, dir); /* Get start cluster */ st_clust(dir, 0U); /* cluster = 0 */ dj.fs->wflag = 1U; if (cl != (DWORD)0U) { /* 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) != 0U) { /* It is a directory */ res = FR_NO_FILE; } else { if (((mode & FA_WRITE) != 0U) && (((*(dir+DIR_Attr)) & AM_RDO) != 0U)) {/* R/O violation */ res = FR_DENIED; } } } } if (res == FR_OK) { if ((mode & FA_CREATE_ALWAYS) != 0U) { /* 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) != 0U) { res = FR_INT_ERR; } #endif } #else /* R/O configuration */ if (res == FR_OK) { /* Follow succeeded */ dir = dj.dir; if ((!dir) != 0U) { /* Current directory itself */ res = FR_INVALID_NAME; } else { if (((*(dir+DIR_Attr)) & AM_DIR) != 0U) {/* It is a directory */ res = FR_NO_FILE; } } } #endif FREE_BUF(); if (res == FR_OK) { fp->flag = mode; /* File access mode */ fp->err = 0U; /* Clear error flag */ fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */ fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */ fp->fptr = 0U; /* File pointer */ fp->dsect = 0U; #if _USE_FASTSEEK fp->cltbl = 0; /* Normal seek mode */ #endif fp->fs = dj.fs; /* Validate file object */ fp->id = fp->fs->id; } } LEAVE_FF(dj.fs, res); } /*-----------------------------------------------------------------------*/ /* Read File */ /*-----------------------------------------------------------------------*/ FRESULT f_read ( FIL* fp, /* Pointer to the file object */ void* buff, /* Pointer to data buffer */ UINT btr, /* Number of bytes to read */ UINT* br /* Pointer to number of bytes read */ ) { FRESULT res; DWORD clst, sect, remain; UINT rcnt, cc; BYTE csect, *rbuff = (BYTE*)(void *)buff; *br = 0U; /* Clear read byte counter */ res = validate(fp); /* Check validity */ if (res != FR_OK) { LEAVE_FF(fp->fs, res); } if (fp->err != (BYTE)0U) { /* Check error */ LEAVE_FF(fp->fs, (FRESULT)fp->err); } if ((!(fp->flag & FA_READ)) != 0U) { /* Check access mode */ LEAVE_FF(fp->fs, FR_DENIED); } remain = fp->fsize - fp->fptr; if (btr > (UINT)remain) { btr = (UINT)remain; /* Truncate btr by remaining bytes */ } while(btr != (UINT)0U) { /* Repeat until all data read */ if ((fp->fptr % SS(fp->fs)) == 0U) { /* On the sector boundary? */ csect = (BYTE)(((BYTE)((DWORD)fp->fptr / (DWORD)SS(fp->fs))) & (BYTE)(fp->fs->csize - (BYTE)1U)); /* Sector offset in the cluster */ if ((!csect) != 0U) { /* On the cluster boundary? */ if (fp->fptr == 0U) { /* 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 < 2U) { ABORT(fp->fs, FR_INT_ERR); } if (clst == 0xFFFFFFFFU) { ABORT(fp->fs, FR_DISK_ERR); } fp->clust = clst; /* Update current cluster */ } sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ if ((!sect) != 0U) { ABORT(fp->fs, FR_INT_ERR); } sect += csect; cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */ if (cc != 0U) { /* Read maximum contiguous sectors directly */ if ((csect + cc) > fp->fs->csize) { /* Clip at cluster boundary */ cc = (UINT)(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_TINY if ((fp->fs->wflag != 0U) && (((fp->fs->winsect - sect) < cc) != 0U)) { mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs)); } #else if (((fp->flag & FA__DIRTY) != (BYTE)0U) && ((fp->dsect - sect) < cc)) { 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 */ rbuff += rcnt; fp->fptr += rcnt; *br += rcnt;btr -= rcnt; continue; } #if !_FS_TINY if (fp->dsect != sect) { /* Load data sector if not in cache */ #if !_FS_READONLY if ((fp->flag & FA__DIRTY) != (BYTE)0U) { /* Write-back dirty sector cache */ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1U) != RES_OK) { ABORT(fp->fs, FR_DISK_ERR); } fp->flag &= ~FA__DIRTY; } #endif if (disk_read(fp->fs->drv, fp->buf, sect, 1U) != RES_OK) { /* Fill sector cache */ ABORT(fp->fs, FR_DISK_ERR); } } #endif fp->dsect = sect; } rcnt = (UINT)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) != 0U) { /* Move sector window */ ABORT(fp->fs, FR_DISK_ERR); } mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ #else mem_cpy(rbuff, (void *)&fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ #endif rbuff += rcnt; fp->fptr += rcnt; *br += rcnt;btr -= rcnt; } LEAVE_FF(fp->fs, FR_OK); } #if !_FS_READONLY /*-----------------------------------------------------------------------*/ /* Write File */ /*-----------------------------------------------------------------------*/ FRESULT f_write ( FIL* fp, /* Pointer to the file object */ const void *buff, /* Pointer to the data to be written */ UINT btw, /* Number of bytes to write */ UINT* bw /* Pointer to number of bytes written */ ) { FRESULT res; DWORD clst, sect; UINT wcnt, cc; const BYTE *wbuff = buff; BYTE csect; UINT LocBtw = btw; *bw = 0U; /* Clear write byte counter */ res = validate(fp); /* Check validity */ if (res != FR_OK) { LEAVE_FF(fp->fs, res); } if (fp->err != (BYTE)0U) { /* Check error */ LEAVE_FF(fp->fs, (FRESULT)fp->err); } if ((!(fp->flag & FA_WRITE)) != 0U) { /* Check access mode */ LEAVE_FF(fp->fs, FR_DENIED); } if ((fp->fptr + LocBtw) < fp->fptr) { LocBtw = 0U; /* File size cannot reach 4GB */ } while(LocBtw != (UINT)0U) { /* Repeat until all data written */ if ((fp->fptr % SS(fp->fs)) == 0U) { /* On the sector boundary? */ csect = (BYTE)((fp->fptr / ((DWORD)SS(fp->fs))) & (DWORD)(fp->fs->csize - 1U)); /* Sector offset in the cluster */ if ((!csect) != 0U) { /* On the cluster boundary? */ if (fp->fptr == 0U) { /* On the top of the file? */ clst = fp->sclust; /* Follow from the origin */ if (clst == 0U) { /* When no cluster is allocated, */ clst = create_chain(fp->fs, 0U); /* 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 == 0U) { break; /* Could not allocate a new cluster (disk full) */ } if (clst == 1U) { ABORT(fp->fs, FR_INT_ERR); } if (clst == 0xFFFFFFFFU) { ABORT(fp->fs, FR_DISK_ERR); } fp->clust = clst; /* Update current cluster */ if (fp->sclust == 0U) { fp->sclust = clst; /* Set start cluster if the first write */ } } #if _FS_TINY if (fp->fs->winsect == fp->dsect && (sync_window(fp->fs) != 0U)) { /* Write-back sector cache */ ABORT(fp->fs, FR_DISK_ERR); } #else if ((fp->flag & FA__DIRTY) != (BYTE)0U) { /* Write-back sector cache */ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1U) != RES_OK) { ABORT(fp->fs, FR_DISK_ERR); } fp->flag &= ~FA__DIRTY; } #endif sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ if ((!sect) != 0U) { ABORT(fp->fs, FR_INT_ERR); } sect += csect; cc = LocBtw / SS(fp->fs); /* When remaining bytes >= sector size, */ if (cc != 0U) { /* Write maximum contiguous sectors directly */ if ((csect + cc) > fp->fs->csize) { /* Clip at cluster boundary */ cc = (UINT)(fp->fs->csize - csect); } if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK) { ABORT(fp->fs, FR_DISK_ERR); } #if _FS_MINIMIZE <= 2 #if _FS_TINY 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 = 0U; } #else 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 #endif wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */ wbuff += wcnt; fp->fptr += (DWORD)wcnt; *bw += wcnt; LocBtw -= wcnt; continue; } #if _FS_TINY if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */ if (sync_window(fp->fs) != 0U) { ABORT(fp->fs, FR_DISK_ERR); } fp->fs->winsect = sect; } #else if (fp->dsect != sect) { /* Fill sector cache with file data */ if (((fp->fptr < fp->fsize) != 0U) && (disk_read(fp->fs->drv, fp->buf, sect, 1U) != RES_OK)) { ABORT(fp->fs, FR_DISK_ERR); } } #endif fp->dsect = sect; } wcnt = (((UINT)SS(fp->fs)) - ((UINT)fp->fptr % SS(fp->fs)));/* Put partial sector into file I/O buffer */ if (wcnt > LocBtw) { wcnt = LocBtw; } #if _FS_TINY if (move_window(fp->fs, fp->dsect) != 0U) { /* Move sector window */ ABORT(fp->fs, FR_DISK_ERR); } mem_cpy((void *)&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ fp->fs->wflag = 1U; #else mem_cpy((void *)&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ fp->flag |= FA__DIRTY; #endif wbuff += wcnt; fp->fptr += (DWORD)wcnt; *bw += wcnt; LocBtw -= wcnt; } if (fp->fptr > fp->fsize) { fp->fsize = fp->fptr; /* Update file size if needed */ } fp->flag |= FA__WRITTEN; /* Set file change flag */ LEAVE_FF(fp->fs, FR_OK); } /*-----------------------------------------------------------------------*/ /* Synchronize the File */ /*-----------------------------------------------------------------------*/ FRESULT f_sync ( FIL* fp /* Pointer to the file object */ ) { FRESULT res; DWORD tm; BYTE *directory; res = validate(fp); /* Check validity of the object */ if (res == FR_OK) { if ((fp->flag & FA__WRITTEN) != 0U) { /* Has the file been written? */ /* Write-back dirty buffer */ #if !_FS_TINY if ((fp->flag & FA__DIRTY) != (BYTE)0U) { if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1U) != RES_OK) { LEAVE_FF(fp->fs, FR_DISK_ERR); } fp->flag &= ~FA__DIRTY; } #endif /* Update the directory entry */ res = move_window(fp->fs, fp->dir_sect); if (res == FR_OK) { directory = fp->dir_ptr; *(directory+DIR_Attr) |= AM_ARC; /* Set archive bit */ ST_DWORD(directory+DIR_FileSize, fp->fsize); /* Update file size */ st_clust(directory, fp->sclust); /* Update start cluster */ tm = get_fattime(); /* Update updated time */ ST_DWORD(directory+DIR_WrtTime, tm); ST_WORD(directory+DIR_LstAccDate, 0); fp->flag &= ~FA__WRITTEN; fp->fs->wflag = 1U; res = sync_fs(fp->fs); } } } LEAVE_FF(fp->fs, res); } #endif /* !_FS_READONLY */ /*-----------------------------------------------------------------------*/ /* Close File */ /*-----------------------------------------------------------------------*/ FRESULT f_close ( FIL *fp /* Pointer to the file object to be closed */ ) { FRESULT res; #if !_FS_READONLY res = f_sync(fp); /* Flush cached data */ if (res == FR_OK) #endif { res = validate(fp); /* Lock volume */ if (res == FR_OK) { #if _FS_REENTRANT FATFS *fs = fp->fs; #endif #if _FS_LOCK res = dec_lock(fp->lockid); /* Decrement file open counter */ if (res == FR_OK) #endif fp->fs = NULL; /* Invalidate file object */ #if _FS_REENTRANT unlock_fs(fs, FR_OK); /* Unlock volume */ #endif } } return res; } /*-----------------------------------------------------------------------*/ /* Change Current Directory or Current Drive, Get Current Directory */ /*-----------------------------------------------------------------------*/ #if _FS_RPATH >= 1 #if _VOLUMES >= 2 FRESULT f_chdrive ( const TCHAR* path /* Drive number */ ) { int vol; vol = get_ldnumber(&path); if (vol < 0) { return FR_INVALID_DRIVE; } CurrVol = (BYTE)vol; return FR_OK; } #endif FRESULT f_chdir ( const TCHAR* path /* Pointer to the directory path */ ) { FRESULT res; DIR dj; DEF_NAMEBUF; /* Get logical drive number */ res = find_volume(&dj.fs, &path, 0); if (res == FR_OK) { INIT_BUF(dj); res = follow_path(&dj, path); /* Follow the path */ FREE_BUF(); if (res == FR_OK) { /* Follow completed */ if (!dj.dir) { dj.fs->cdir = dj.sclust; /* Start directory itself */ } else { 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 */ } } } if (res == FR_NO_FILE) { res = FR_NO_PATH; } } LEAVE_FF(dj.fs, res); } #if _FS_RPATH >= 2 FRESULT f_getcwd ( TCHAR* buff, /* Pointer to the directory path */ UINT len /* Size of path */ ) { FRESULT res; DIR dj; UINT i, n; DWORD ccl; TCHAR *tp; FILINFO fno; DEF_NAMEBUF; *buff = 0; /* Get logical drive number */ res = find_volume(&dj.fs, (const TCHAR**)&buff, 0); /* Get current volume */ if (res == FR_OK) { INIT_BUF(dj); i = len; /* Bottom of buffer (directory stack base) */ dj.sclust = dj.fs->cdir; /* Start to follow upper directory from current directory */ while ((ccl = dj.sclust) != 0) { /* Repeat while current directory is a sub-directory */ res = dir_sdi(&dj, 1); /* Get parent directory */ if (res != FR_OK) { break; } res = dir_read(&dj, 0); if (res != FR_OK) { break; } dj.sclust = ld_clust(dj.fs, dj.dir); /* Goto parent directory */ res = dir_sdi(&dj, 0); if (res != FR_OK) { break; } do { /* Find the entry links to the child directory */ res = dir_read(&dj, 0); 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 = buff; fno.lfsize = i; #endif get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */ tp = fno.fname; #if _USE_LFN if (*buff) { tp = buff; } #endif for (n = 0; tp[n]; n++) ; if (i < n + 3) { res = FR_NOT_ENOUGH_CORE; break; } while (n) buff[--i] = tp[--n]; buff[--i] = '/'; } tp = buff; if (res == FR_OK) { #if _VOLUMES >= 2 *tp++ = '0' + CurrVol; /* Put drive number */ *tp++ = ':'; #endif if (i == len) { /* Root-directory */ *tp++ = '/'; } else { /* Sub-directroy */ do /* Add stacked path str */ *tp++ = buff[i++]; while (i < len); } } *tp = 0; FREE_BUF(); } LEAVE_FF(dj.fs, res); } #endif /* _FS_RPATH >= 2 */ #endif /* _FS_RPATH >= 1 */ #if _FS_MINIMIZE <= 2 /*-----------------------------------------------------------------------*/ /* Seek File R/W Pointer */ /*-----------------------------------------------------------------------*/ FRESULT f_lseek ( FIL* fp, /* Pointer to the file object */ DWORD ofs /* File pointer from top of file */ ) { FRESULT res; DWORD LocOfs = ofs; res = validate(fp); /* Check validity of the object */ if (res != FR_OK) { LEAVE_FF(fp->fs, res); } if (fp->err != (BYTE)0U) { /* Check error */ LEAVE_FF(fp->fs, (FRESULT)fp->err); } #if _USE_FASTSEEK if (fp->cltbl) { /* Fast seek */ DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl; 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 { /* 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); 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 */ } *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 (LocOfs > fp->fsize) { /* Clip offset at the file size */ LocOfs = fp->fsize; } fp->fptr = LocOfs; /* Set file pointer */ if (LocOfs) { fp->clust = clmt_clust(fp, ofs - 1); dsc = clust2sect(fp->fs, fp->clust); if ((!dsc) != 0U) { ABORT(fp->fs, FR_INT_ERR); } dsc += (LocOfs - 1) / SS(fp->fs) & (fp->fs->csize - 1); if (((fp->fptr % SS(fp->fs)) != 0U)&& ((dsc != fp->dsect) != 0U)) { /* Refill sector cache if needed */ #if !_FS_TINY #if !_FS_READONLY 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) { /* Load current sector */ ABORT(fp->fs, FR_DISK_ERR); } #endif fp->dsect = dsc; } } } } else #endif /* Normal Seek */ { DWORD clst, bcs, nsect, ifptr; if (((LocOfs > fp->fsize) != 0U) /* In read-only mode, clip offset with the file size */ #if !_FS_READONLY && ((!(fp->flag & FA_WRITE)) != 0U) #endif ) { LocOfs = fp->fsize; } ifptr = fp->fptr; fp->fptr = 0U; nsect = 0U; if (LocOfs != (DWORD)0U) { bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */ if ((ifptr > 0U) && ((((LocOfs - 1) / bcs) >= ((ifptr - 1) / bcs)) != 0U)) { /* When seek to same or following cluster, */ fp->fptr = (ifptr - 1) & ~(bcs - (DWORD)1); /* start from the current cluster */ LocOfs -= fp->fptr; clst = fp->clust; } else { /* When seek to back cluster, */ clst = fp->sclust; /* start from the first cluster */ #if !_FS_READONLY if (clst == 0U) { /* If no cluster chain, create a new chain */ clst = create_chain(fp->fs, 0U); if (clst == 1U) { ABORT(fp->fs, FR_INT_ERR); } if (clst == 0xFFFFFFFFU) { ABORT(fp->fs, FR_DISK_ERR); } fp->sclust = clst; } #endif fp->clust = clst; } if (clst != 0U) { while (LocOfs > bcs) { /* Cluster following loop */ #if !_FS_READONLY if ((fp->flag & FA_WRITE) != (BYTE)0U) { /* Check if in write mode or not */ clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */ if (clst == 0U) { /* When disk gets full, clip file size */ LocOfs = bcs; break; } } else { #endif clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */ } if (clst == 0xFFFFFFFFU) { ABORT(fp->fs, FR_DISK_ERR); } if ((clst <= 1U) || ((clst >= fp->fs->n_fatent) != 0U)) { ABORT(fp->fs, FR_INT_ERR); } fp->clust = clst; fp->fptr += bcs; LocOfs -= bcs; } fp->fptr += LocOfs; if ((LocOfs % SS(fp->fs)) != (UINT)0U) { nsect = clust2sect(fp->fs, clst); /* Current sector */ if ((!nsect) != 0U) { ABORT(fp->fs, FR_INT_ERR); } nsect += LocOfs / SS(fp->fs); } } } if (((fp->fptr % SS(fp->fs)) != 0U) && ((nsect != fp->dsect) != 0U)) { /* Fill sector cache if needed */ #if !_FS_TINY #if !_FS_READONLY if ((fp->flag & FA__DIRTY) != (BYTE)0U) { /* Write-back dirty sector cache */ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1U) != RES_OK) { ABORT(fp->fs, FR_DISK_ERR); } fp->flag &= ~FA__DIRTY; } #endif if (disk_read(fp->fs->drv, fp->buf, nsect, 1U) != RES_OK) { /* Fill sector cache */ ABORT(fp->fs, FR_DISK_ERR); } #endif fp->dsect = nsect; } #if !_FS_READONLY if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */ fp->fsize = fp->fptr; fp->flag |= FA__WRITTEN; } #endif } LEAVE_FF(fp->fs, res); } #if _FS_MINIMIZE <= 1 /*-----------------------------------------------------------------------*/ /* Create a Directory Object */ /*-----------------------------------------------------------------------*/ FRESULT f_opendir ( DIR* dp, /* Pointer to directory object to create */ const TCHAR* path /* Pointer to the directory path */ ) { FRESULT res; FATFS* fs; DEF_NAMEBUF; if ((!dp) != 0U) { res = FR_INVALID_OBJECT; } else { /* Get logical drive number */ res = find_volume(&fs, &path, 0U); if (res == FR_OK) { dp->fs = fs; INIT_BUF(*dp); res = follow_path(dp, path); /* Follow the path to the directory */ FREE_BUF(); if (res == FR_OK) { /* Follow completed */ if (dp->dir != NULL) { /* It is not the origin directory itself */ if ((dp->dir[DIR_Attr] & AM_DIR) != (BYTE)0U) {/* The object is a sub directory */ dp->sclust = ld_clust(fs, dp->dir); } else { /* The object is a file */ res = FR_NO_PATH; } } if (res == FR_OK) { dp->id = fs->id; res = dir_sdi(dp, 0U); /* Rewind directory */ #if _FS_LOCK if (res == FR_OK) { if (dp->sclust) { dp->lockid = inc_lock(dp, 0); /* Lock the sub directory */ if (!dp->lockid) res = FR_TOO_MANY_OPEN_FILES; } else { dp->lockid = 0; /* Root directory need not to be locked */ } } #endif } } if (res == FR_NO_FILE) { res = FR_NO_PATH; } } if (res != FR_OK) { dp->fs = NULL; /* Invalidate the directory object if function faild */ } } LEAVE_FF(fs, res); } /*-----------------------------------------------------------------------*/ /* Close Directory */ /*-----------------------------------------------------------------------*/ FRESULT f_closedir ( DIR *dp /* Pointer to the directory object to be closed */ ) { FRESULT res; res = validate(dp); if (res == FR_OK) { #if _FS_REENTRANT FATFS *fs = dp->fs; #endif #if _FS_LOCK if (dp->lockid) { /* Decrement sub-directory open counter */ res = dec_lock(dp->lockid); } if (res == FR_OK) #endif dp->fs = NULL; /* Invalidate directory object */ #if _FS_REENTRANT unlock_fs(fs, FR_OK); /* Unlock volume */ #endif } return res; } /*-----------------------------------------------------------------------*/ /* Read Directory Entries in Sequence */ /*-----------------------------------------------------------------------*/ FRESULT f_readdir ( DIR* dp, /* Pointer to the open directory object */ FILINFO* fno /* Pointer to file information to return */ ) { FRESULT res; DEF_NAMEBUF; res = validate(dp); /* Check validity of the object */ if (res == FR_OK) { if ((!fno) != 0U) { res = dir_sdi(dp, 0U); /* Rewind the directory object */ } else { INIT_BUF(*dp); res = dir_read(dp, 0); /* Read an item */ if (res == FR_NO_FILE) { /* Reached end of directory */ dp->sect = 0U; res = FR_OK; } if (res == FR_OK) { /* A valid entry is found */ get_fileinfo(dp, fno); /* Get the object information */ res = dir_next(dp, 0); /* Increment index for next */ if (res == FR_NO_FILE) { dp->sect = 0U; res = FR_OK; } } FREE_BUF(); } } LEAVE_FF(dp->fs, res); } #if _FS_MINIMIZE == 0 /*-----------------------------------------------------------------------*/ /* Get File Status */ /*-----------------------------------------------------------------------*/ FRESULT f_stat ( const TCHAR* path, /* Pointer to the file path */ FILINFO* fno /* Pointer to file information to return */ ) { FRESULT res; DIR dj = {0}; DEF_NAMEBUF; /* Get logical drive number */ res = find_volume(&dj.fs, &path, 0U); if (res == FR_OK) { INIT_BUF(dj); res = follow_path(&dj, path); /* Follow the file path */ if (res == FR_OK) { /* Follow completed */ if (dj.dir != NULL) { /* Found an object */ if (fno != NULL) { get_fileinfo(&dj, fno); } } else { /* It is root directory */ res = FR_INVALID_NAME; } } FREE_BUF(); } LEAVE_FF(dj.fs, res); } #if !_FS_READONLY /*-----------------------------------------------------------------------*/ /* Get Number of Free Clusters */ /*-----------------------------------------------------------------------*/ FRESULT f_getfree ( const TCHAR* path, /* Path name of the logical drive number */ DWORD* nclst, /* Pointer to a variable to return number of free clusters */ FATFS** fatfsys /* Pointer to return pointer to corresponding file system object */ ) { FRESULT res; FATFS *fs; DWORD n, clst, sect, stat; UINT i; BYTE fat, *p; /* Get logical drive number */ res = find_volume(fatfsys, &path, 0U); fs = *fatfsys; if (res == FR_OK) { /* If free_clust is valid, return it without full cluster scan */ if (fs->free_clust <= (fs->n_fatent - 2)) { *nclst = fs->free_clust; } else { /* Get number of free clusters */ fat = fs->fs_type; n = 0U; if (fat == FS_FAT12) { clst = (DWORD)2; do { stat = get_fat(fs, clst); if (stat == (DWORD)0xFFFFFFFFU) { res = FR_DISK_ERR; break; } if (stat == 1U) { res = FR_INT_ERR; break; } if (stat == 0U) { n++; } clst += (DWORD)1; } while (clst < fs->n_fatent); } else { clst = fs->n_fatent; sect = fs->fatbase; i = 0U; p = 0U; do { if (i == (UINT)0U) { res = move_window(fs, sect); sect += (DWORD)1; if (res != FR_OK) { break; } p = fs->win; i = SS(fs); } if (fat == FS_FAT16) { if (LD_WORD(p) == 0U) { n++; } p += 2; i -= (UINT)2; } else { if ((LD_DWORD(p) & 0x0FFFFFFFU) == 0U) { n++; } p += 4; i -= (UINT)4; } clst -= (DWORD)1; } while (clst != (DWORD)0U); } fs->free_clust = n; fs->fsi_flag |= 1U; *nclst = n; } } LEAVE_FF(fs, res); } /*-----------------------------------------------------------------------*/ /* Truncate File */ /*-----------------------------------------------------------------------*/ FRESULT f_truncate ( FIL* fp /* Pointer to the file object */ ) { FRESULT res; DWORD ncl; res = validate(fp); /* Check validity of the object */ if (res == FR_OK) { if (fp->err != (BYTE) 0U) { /* Check error */ res = (FRESULT)fp->err; } else { if ((!(fp->flag & FA_WRITE)) != 0U) { /* Check access mode */ res = FR_DENIED; } } } if (res == FR_OK) { if (fp->fsize > fp->fptr) { fp->fsize = fp->fptr; /* Set file size to current R/W point */ fp->flag |= FA__WRITTEN; if (fp->fptr == 0U) { /* When set file size to zero, remove entire cluster chain */ res = remove_chain(fp->fs, fp->sclust); fp->sclust = 0U; } else { /* When truncate a part of the file, remove remaining clusters */ ncl = get_fat(fp->fs, fp->clust); res = FR_OK; if (ncl == (DWORD)0xFFFFFFFFU) { res = FR_DISK_ERR; } if (ncl == 1U) { res = FR_INT_ERR; } if ((res == FR_OK) && ((ncl < fp->fs->n_fatent) != 0U)) { res = put_fat(fp->fs, fp->clust, 0x0FFFFFFFU); if (res == FR_OK) { res = remove_chain(fp->fs, ncl); } } } #if !_FS_TINY if ((res == FR_OK) && ((fp->flag & FA__DIRTY) != (BYTE)0U)) { if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1U) != RES_OK) { res = FR_DISK_ERR; } else { fp->flag &= ~FA__DIRTY; } } #endif } if (res != FR_OK) { fp->err = (FRESULT)res; } } LEAVE_FF(fp->fs, res); } /*-----------------------------------------------------------------------*/ /* Delete a File or Directory */ /*-----------------------------------------------------------------------*/ FRESULT f_unlink ( const TCHAR* path /* Pointer to the file or directory path */ ) { FRESULT res; DIR dj = {0}, sdj = {0}; BYTE *dir; DWORD dclst; DEF_NAMEBUF; /* Get logical drive number */ res = find_volume(&dj.fs, &path, 1U); if (res == FR_OK) { INIT_BUF(dj); res = follow_path(&dj, path); /* Follow the file path */ if (_FS_RPATH && (res == FR_OK) && ((dj.fn[NS] & NS_DOT) != (BYTE)0U)) { res = FR_INVALID_NAME; /* Cannot remove dot entry */ } #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 */ dir = dj.dir; if ((!dir) != 0U) { res = FR_INVALID_NAME; /* Cannot remove the start directory */ } else { if (((*(dir+DIR_Attr)) & AM_RDO) != (BYTE)0U) { res = FR_DENIED; /* Cannot remove R/O object */ } } dclst = ld_clust(dj.fs, dir); if ((res == FR_OK) && (((*(dir+DIR_Attr)) & AM_DIR) != (BYTE)0U)) { /* Is it a sub-dir? */ if (dclst < 2U) { res = FR_INT_ERR; } else { mem_cpy(&sdj, &dj, sizeof (DIR)); /* Check if the sub-directory is empty or not */ sdj.sclust = dclst; res = dir_sdi(&sdj, 2U); /* Exclude dot entries */ if (res == FR_OK) { res = dir_read(&sdj, 0); /* Read an item */ if (res == FR_OK /* Not empty directory */ #if _FS_RPATH || dclst == dj.fs->cdir /* Current directory */ #endif ) { res = FR_DENIED; } if (res == FR_NO_FILE) { res = FR_OK; /* Empty */ } } } } if (res == FR_OK) { res = dir_remove(&dj); /* Remove the directory entry */ if (res == FR_OK) { if (dclst != (DWORD)0U) { /* Remove the cluster chain if exist */ res = remove_chain(dj.fs, dclst); } if (res == FR_OK) { res = sync_fs(dj.fs); } } } } FREE_BUF(); } LEAVE_FF(dj.fs, res); } /*-----------------------------------------------------------------------*/ /* Create a Directory */ /*-----------------------------------------------------------------------*/ FRESULT f_mkdir ( const TCHAR* path /* Pointer to the directory path */ ) { FRESULT res; DIR dj = {0}; BYTE *dir, n; DWORD dsc, dcl, pcl, tm = get_fattime(); DEF_NAMEBUF; /* Get logical drive number */ res = find_volume(&dj.fs, &path, 1U); if (res == FR_OK) { INIT_BUF(dj); res = follow_path(&dj, path); /* Follow the file path */ if (res == FR_OK) { res = FR_EXIST; /* Any object with same name is already existing */ } if (_FS_RPATH && (res == FR_NO_FILE) && ((dj.fn[NS] & NS_DOT) != (BYTE)0U)) { res = FR_INVALID_NAME; } if (res == FR_NO_FILE) { /* Can create a new directory */ dcl = create_chain(dj.fs, 0U); /* Allocate a cluster for the new directory table */ res = FR_OK; if (dcl == 0U) { res = FR_DENIED; /* No space to allocate a new cluster */ } if (dcl == 1U) { res = FR_INT_ERR; } if (dcl == 0xFFFFFFFFU) { res = FR_DISK_ERR; } if (res == FR_OK) { /* Flush FAT */ res = sync_window(dj.fs); } if (res == FR_OK) { /* Initialize the new directory table */ dsc = clust2sect(dj.fs, dcl); dir = dj.fs->win; mem_set(dir, 0, SS(dj.fs)); mem_set(dir, (s32)' ', 11U); /* Create "." entry */ (*(dir+DIR_Name)) = ((BYTE)'.'); (*(dir+DIR_Attr)) = AM_DIR; ST_DWORD(dir+DIR_WrtTime, tm); st_clust(dir, dcl); mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */ (*(dir+SZ_DIR+1U)) = ((BYTE)'.'); pcl = dj.sclust; if ((dj.fs->fs_type == FS_FAT32) && (pcl == dj.fs->dirbase)) { pcl = 0U; } st_clust(dir+SZ_DIR, pcl); n = dj.fs->csize; for (; n; n--) { /* Write dot entries and clear following sectors */ dj.fs->winsect = dsc; dsc += (DWORD)1; dj.fs->wflag = 1U; res = sync_window(dj.fs); if (res != FR_OK) { break; } mem_set(dir, 0, SS(dj.fs)); } } if (res == FR_OK) { res = dir_register(&dj); /* Register the object to the directoy */ } if (res != FR_OK) { (void)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, tm); /* Created time */ st_clust(dir, dcl); /* Table start cluster */ dj.fs->wflag = 1U; res = sync_fs(dj.fs); } } FREE_BUF(); } LEAVE_FF(dj.fs, res); } /*-----------------------------------------------------------------------*/ /* Change Attribute */ /*-----------------------------------------------------------------------*/ FRESULT f_chmod ( const TCHAR* path, /* Pointer to the file path */ BYTE value, /* Attribute bits */ BYTE mask /* Attribute mask to change */ ) { FRESULT res; DIR dj = {0}; BYTE *dir; DEF_NAMEBUF; /* Get logical drive number */ res = find_volume(&dj.fs, &path, 1U); if (res == FR_OK) { INIT_BUF(dj); res = follow_path(&dj, path); /* Follow the file path */ FREE_BUF(); if (_FS_RPATH && (res == FR_OK) && ((dj.fn[NS] & NS_DOT) != (BYTE)0U)) { res = FR_INVALID_NAME; } if (res == FR_OK) { dir = dj.dir; if ((!dir) != 0U) { /* Is it a root directory? */ res = FR_INVALID_NAME; } else { /* File or sub directory */ mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ (*(dir+DIR_Attr)) = (value & mask) | ((*(dir+DIR_Attr)) & (BYTE)~mask); /* Apply attribute change */ dj.fs->wflag = 1U; res = sync_fs(dj.fs); } } } LEAVE_FF(dj.fs, res); } /*-----------------------------------------------------------------------*/ /* Change Timestamp */ /*-----------------------------------------------------------------------*/ FRESULT f_utime ( const TCHAR* path, /* Pointer to the file/directory name */ const FILINFO* fno /* Pointer to the time stamp to be set */ ) { FRESULT res; DIR dj = {0}; BYTE *dir; DEF_NAMEBUF; /* Get logical drive number */ res = find_volume(&dj.fs, &path, 1U); if (res == FR_OK) { INIT_BUF(dj); res = follow_path(&dj, path); /* Follow the file path */ FREE_BUF(); if (_FS_RPATH && (res == FR_OK) && ((dj.fn[NS] & NS_DOT) != (BYTE)0U)) { res = FR_INVALID_NAME; } if (res == FR_OK) { dir = dj.dir; if ((!dir) != 0U) { /* Root directory */ res = FR_INVALID_NAME; } else { /* File or sub-directory */ ST_WORD(dir+DIR_WrtTime, fno->ftime); ST_WORD(dir+DIR_WrtDate, fno->fdate); dj.fs->wflag = 1U; res = sync_fs(dj.fs); } } } LEAVE_FF(dj.fs, res); } /*-----------------------------------------------------------------------*/ /* Rename File/Directory */ /*-----------------------------------------------------------------------*/ FRESULT f_rename ( const TCHAR* path_old, /* Pointer to the object to be renamed */ const TCHAR* path_new /* Pointer to the new name */ ) { FRESULT res; DIR djo = {0}, djn = {0}; BYTE buf[21] = {0}; BYTE *dir; DWORD dw; DEF_NAMEBUF; /* Get logical drive number of the source object */ res = find_volume(&djo.fs, &path_old, 1U); if (res == FR_OK) { djn.fs = djo.fs; INIT_BUF(djo); res = follow_path(&djo, path_old); /* Check old object */ if (_FS_RPATH && (res == FR_OK) && ((djo.fn[NS] & NS_DOT) != (BYTE)0U)) { res = FR_INVALID_NAME; } #if _FS_LOCK if (res == FR_OK) { res = chk_lock(&djo, 2); } #endif if (res == FR_OK) { /* Old object is found */ if (djo.dir == NULL) { /* Is root dir? */ res = FR_NO_FILE; } else { mem_cpy(buf, djo.dir+DIR_Attr, 21U); /* Save the object information except name */ mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */ if (get_ldnumber(&path_new) >= 0) { /* Snip drive number off and ignore it */ res = follow_path(&djn, path_new); /* and check if new object is exist */ } else { res = FR_INVALID_DRIVE; } 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 can cause a cross-link */ res = dir_register(&djn); /* Register the new entry */ if (res == FR_OK) { dir = djn.dir; /* Copy object information except name */ mem_cpy(dir+13, buf+2, 19U); (*(dir+DIR_Attr)) = buf[0] | AM_ARC; djo.fs->wflag = 1U; if ((djo.sclust != djn.sclust) && (((*(dir+DIR_Attr)) & AM_DIR) != (BYTE)0U)) { /* Update .. entry in the directory if needed */ dw = clust2sect(djo.fs, ld_clust(djo.fs, dir)); if ((!dw) != 0U) { res = FR_INT_ERR; } else { res = move_window(djo.fs, dw); dir = djo.fs->win+SZ_DIR; /* .. entry */ if ((res == FR_OK) && ((*(dir+1)) == ((BYTE)'.'))) { dw = ((djo.fs->fs_type == FS_FAT32) && (djn.sclust == djo.fs->dirbase)) ? ((DWORD)0) : djn.sclust; st_clust(dir, dw); djo.fs->wflag = 1U; } } } if (res == FR_OK) { res = dir_remove(&djo); /* Remove old entry */ if (res == FR_OK) { res = sync_fs(djo.fs); } } } /* End critical section */ } } } FREE_BUF(); } LEAVE_FF(djo.fs, res); } #endif /* !_FS_READONLY */ #endif /* _FS_MINIMIZE == 0 */ #endif /* _FS_MINIMIZE <= 1 */ #endif /* _FS_MINIMIZE <= 2 */ #if _USE_LABEL /*-----------------------------------------------------------------------*/ /* Get volume label */ /*-----------------------------------------------------------------------*/ FRESULT f_getlabel ( const TCHAR* path, /* Path name of the logical drive number */ TCHAR* label, /* Pointer to a buffer to return the volume label */ DWORD* vsn /* Pointer to a variable to return the volume serial number */ ) { FRESULT res; DIR dj; UINT i, j; /* Get logical drive number */ res = find_volume(&dj.fs, &path, 0); /* Get volume label */ if (res == FR_OK && label) { dj.sclust = 0; /* Open root directory */ res = dir_sdi(&dj, 0); if (res == FR_OK) { res = dir_read(&dj, 1); /* Get an entry with AM_VOL */ if (res == FR_OK) { /* A volume label is exist */ #if _USE_LFN && _LFN_UNICODE WCHAR w; i = j = 0; do { w = (i < 11) ? dj.dir[i++] : ' '; if (IsDBCS1(w) && (i < 11) && IsDBCS2(dj.dir[i])) { w = w << 8 | dj.dir[i++]; } label[j++] = ff_convert(w, 1); /* OEM -> Unicode */ } while (j < 11); #else mem_cpy(label, dj.dir, 11); #endif j = 11; do { label[j] = 0; if ((!j) != 0U) { break; } } while (label[--j] == ' '); } if (res == FR_NO_FILE) { /* No label, return nul string */ label[0] = 0; res = FR_OK; } } } /* Get volume serial number */ if (res == FR_OK && vsn) { res = move_window(dj.fs, dj.fs->volbase); if (res == FR_OK) { i = dj.fs->fs_type == FS_FAT32 ? BS_VolID32 : BS_VolID; *vsn = LD_DWORD(&dj.fs->win[i]); } } LEAVE_FF(dj.fs, res); } #if !_FS_READONLY /*-----------------------------------------------------------------------*/ /* Set volume label */ /*-----------------------------------------------------------------------*/ FRESULT f_setlabel ( const TCHAR* label /* Pointer to the volume label to set */ ) { FRESULT res; DIR dj; BYTE vn[11]; UINT i, j, sl; WCHAR w; DWORD tm; /* Get logical drive number */ res = find_volume(&dj.fs, &label, 1); if (res) { LEAVE_FF(dj.fs, res); } /* Create a volume label in directory form */ vn[0] = 0; for (sl = 0; label[sl]; sl++) ; /* Get name length */ for ( ; sl && label[sl-1] == ' '; sl--) ; /* Remove trailing spaces */ if (sl) { /* Create volume label in directory form */ i = j = 0; do { #if _USE_LFN && _LFN_UNICODE w = ff_convert(ff_wtoupper(label[i++]), 0); #else w = (BYTE)label[i++]; if (IsDBCS1(w)) { w = ((j < 10) && (i < sl) && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0; } #if _USE_LFN w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0); #else if (IsLower(w)) { w -= 0x20; /* To upper ASCII characters */ } #ifdef _EXCVT if (w >= 0x80) { w = ExCvt[w - 0x80]; /* To upper extended characters (SBCS cfg) */ } #else if (((!DF1S) != 0U) && ((w >= 0x80) != 0U)) { w = 0; /* Reject extended characters (ASCII cfg) */ } #endif #endif #endif if ((!w) || chk_chr("\"*+,.:;<=>\?[]|\x7F", w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) {/* Reject invalid characters for volume label */ LEAVE_FF(dj.fs, FR_INVALID_NAME); } if (w >= 0x100) { vn[j++] = (BYTE)(w >> 8); } vn[j++] = (BYTE)w; } while (i < sl); while (j < 11) vn[j++] = ' '; } /* Set volume label */ dj.sclust = 0; /* Open root directory */ res = dir_sdi(&dj, 0); if (res == FR_OK) { res = dir_read(&dj, 1); /* Get an entry with AM_VOL */ if (res == FR_OK) { /* A volume label is found */ if (vn[0]) { mem_cpy(dj.dir, vn, 11); /* Change the volume label name */ tm = get_fattime(); ST_DWORD(dj.dir+DIR_WrtTime, tm); } else { dj.dir[0] = DDE; /* Remove the volume label */ } dj.fs->wflag = 1; res = sync_fs(dj.fs); } else { /* No volume label is found or error */ if (res == FR_NO_FILE) { res = FR_OK; if (vn[0]) { /* Create volume label as new */ res = dir_alloc(&dj, 1); /* Allocate an entry for volume label */ if (res == FR_OK) { mem_set(dj.dir, 0, SZ_DIR); /* Set volume label */ mem_cpy(dj.dir, vn, 11); dj.dir[DIR_Attr] = AM_VOL; tm = get_fattime(); ST_DWORD(dj.dir+DIR_WrtTime, tm); dj.fs->wflag = 1; res = sync_fs(dj.fs); } } } } } LEAVE_FF(dj.fs, res); } #endif /* !_FS_READONLY */ #endif /* _USE_LABEL */ /*-----------------------------------------------------------------------*/ /* Forward data to the stream directly (available on only tiny cfg) */ /*-----------------------------------------------------------------------*/ #if _USE_FORWARD && _FS_TINY FRESULT f_forward ( FIL* fp, /* Pointer to the file object */ UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */ UINT btf, /* Number of bytes to forward */ UINT* bf /* Pointer to number of bytes forwarded */ ) { FRESULT res; DWORD remain, clst, sect; UINT rcnt; BYTE csect; *bf = 0; /* Clear transfer byte counter */ res = validate(fp); /* Check validity of the object */ if (res != FR_OK) { LEAVE_FF(fp->fs, res); } if (fp->err) { /* Check error */ LEAVE_FF(fp->fs, (FRESULT)fp->err); } if ((!(fp->flag & FA_READ)) != 0U) { /* Check access mode */ LEAVE_FF(fp->fs, FR_DENIED); } remain = fp->fsize - fp->fptr; if (btf > remain) { btf = (UINT)remain; /* Truncate btf by remaining bytes */ } for ( ; btf && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */ fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) { csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ 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->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->clust = clst; /* Update current cluster */ } } sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */ if ((!sect) != 0U) { ABORT(fp->fs, FR_INT_ERR); } sect += csect; if (move_window(fp->fs, sect)) { /* Move sector window */ ABORT(fp->fs, FR_DISK_ERR); } fp->dsect = sect; rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */ if (rcnt > btf) { rcnt = btf; } rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt); if ((!rcnt) != 0U) { ABORT(fp->fs, FR_INT_ERR); } } LEAVE_FF(fp->fs, FR_OK); } #endif /* _USE_FORWARD */ #if _USE_MKFS && !_FS_READONLY /*-----------------------------------------------------------------------*/ /* Create File System on the Drive */ /*-----------------------------------------------------------------------*/ #define N_ROOTDIR 512 /* Number of root directory entries for FAT12/16 */ #define N_FATS 1 /* Number of FAT copies (1 or 2) */ FRESULT f_mkfs ( const TCHAR* path, /* Logical drive number */ BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */ UINT au /* Allocation unit [bytes] */ ) { 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}; int vol; 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 */ vol = get_ldnumber(&path); if (vol < 0) { return FR_INVALID_DRIVE; } if (sfd > 1) { return FR_INVALID_PARAMETER; } if (au & (au - 1)) { return FR_INVALID_PARAMETER; } fs = FatFs[vol]; if ((!fs) != 0U) { return FR_NOT_ENABLED; } fs->fs_type = 0; pdrv = LD2PD(vol); /* Physical drive */ part = LD2PT(vol); /* Partition (0:auto detect, 1-4:get from partition table)*/ /* Get disk statics */ stat = disk_initialize(pdrv); if (stat & STA_NOINIT) { return FR_NOT_READY; } if (stat & STA_PROTECT) { return FR_WRITE_PROTECTED; } #if _MAX_SS != _MIN_SS /* Get disk sector size */ if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || (SS(fs) > _MAX_SS) || (SS(fs) < _MIN_SS)) { return FR_DISK_ERR; } #endif 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]) != 0U) { 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) != 0U) { /* AU auto selection */ vs = n_vol / (2000 / (SS(fs) / 512)); for (i = 0; vs < vst[i]; i++) ; au = cst[i]; } 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 sub-type */ n_clst = n_vol / au; fmt = FS_FAT12; if (n_clst >= MIN_FAT16) { fmt = FS_FAT16; } if (n_clst >= MIN_FAT32) { fmt = FS_FAT32; } /* Determine offset and size of FAT structure */ if (fmt == FS_FAT32) { n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs); n_rsv = 32; n_dir = 0; } else { 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 = (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 - b_vol) { return FR_MKFS_ABORTED; /* Too small volume */ } /* Align data start sector to erase block boundary (for flash memory media) */ 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 offset */ n_rsv += n; b_fat += n; } else { /* FAT12/16: Expand FAT size */ n_fat += n; } /* 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; } /* Determine system ID in the partition table */ if (fmt == FS_FAT32) { sys = 0x0C; /* FAT32X */ } else { if (fmt == FS_FAT12 && n_vol < 0x10000) { sys = 0x01; /* FAT12(<65536) */ } else { sys = (n_vol < 0x10000) ? 0x04 : 0x06; /* FAT16(<65536) : FAT12/16(>=65536) */ } } 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) != 0U) { /* Write it to teh MBR */ 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 */ return FR_DISK_ERR; } md = 0xF8; } } /* Create BPB in the VBR */ tbl = fs->win; /* Clear sector */ mem_set(tbl, 0, SS(fs)); 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 root directory 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 */ 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 */ } 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(pdrv, tbl, b_vol, 1) != RES_OK) { /* Write it to the VBR sector */ return FR_DISK_ERR; } if (fmt == FS_FAT32) { /* Write backup VBR if needed (VBR+6) */ disk_write(pdrv, tbl, b_vol + 6, 1); } /* Initialize FAT area */ 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 |= 0xFFFFFF00; ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */ ST_DWORD(tbl+4, 0xFFFFFFFF); ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root directory */ } 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 writes */ if (disk_write(pdrv, tbl, wsect++, 1) != RES_OK) { return FR_DISK_ERR; } } } /* Initialize root directory */ i = (fmt == FS_FAT32) ? au : (UINT)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 if needed */ if (fmt == FS_FAT32) { ST_DWORD(tbl+FSI_LeadSig, 0x41615252); ST_DWORD(tbl+FSI_StrucSig, 0x61417272); 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, (void *)0) == RES_OK) ? FR_OK : FR_DISK_ERR; } #if _MULTI_PARTITION /*-----------------------------------------------------------------------*/ /* 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] <= 100U) ? (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); /* 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 */ #endif /* _USE_MKFS && !_FS_READONLY */ #if _USE_STRFUNC /*-----------------------------------------------------------------------*/ /* Get a string from the file */ /*-----------------------------------------------------------------------*/ TCHAR* f_gets ( TCHAR* buff, /* Pointer to the string buffer to read */ s32 len, /* Size of string buffer (characters) */ FIL* fp /* Pointer to the file object */ ) { s32 n = 0; TCHAR c, *p = buff; BYTE s[2]; UINT rc; while (n < len - 1) { /* Read characters until buffer gets filled */ #if _USE_LFN && _LFN_UNICODE #if _STRF_ENCODE == 3 /* Read a character in UTF-8 */ f_read(fp, s, 1, &rc); if (rc != 1) { break; } c = s[0]; if (c >= 0x80) { if (c < 0xC0) { continue; /* Skip stray trailer */ } if (c < 0xE0) { /* Two-byte sequence */ f_read(fp, s, 1, &rc); if (rc != 1) { break; } c = ((c & 0x1F) << 6 )| (s[0] & 0x3F); if (c < 0x80) { c = '?'; } } else { if (c < 0xF0) { /* Three-byte sequence */ f_read(fp, s, 2, &rc); if (rc != 2) { break; } c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F); if (c < 0x800) { c = '?'; } } else { /* Reject four-byte sequence */ c = '?'; } } } #elif _STRF_ENCODE == 2 /* Read a character in UTF-16BE */ f_read(fp, s, 2, &rc); if (rc != 2) { break; } c = s[1] + (s[0] << 8); #elif _STRF_ENCODE == 1 /* Read a character in UTF-16LE */ f_read(fp, s, 2, &rc); if (rc != 2) { break; } c = s[0] + (s[1] << 8); #else /* Read a character in ANSI/OEM */ f_read(fp, s, 1, &rc); if (rc != 1) { break; } c = s[0]; if (IsDBCS1(c)) { f_read(fp, s, 1, &rc); if (rc != 1) break; c = (c << 8) + s[0]; } c = ff_convert(c, 1); /* OEM -> Unicode */ if ((!c) != 0U) { c = '?'; } #endif #else /* Read a character without conversion */ f_read(fp, s, 1, &rc); if (rc != 1) { break; } c = s[0]; #endif if ((_USE_STRFUNC == 2) && (c == '\r')){ continue; /* Strip '\r' */ } *p++ = c; n++; if (c == '\n') { break; /* Break on EOL */ } } *p = 0; return n ? buff : 0; /* When no data read (eof or error), return with error. */ } #if !_FS_READONLY #include /*-----------------------------------------------------------------------*/ /* Put a character to the file */ /*-----------------------------------------------------------------------*/ typedef struct { FIL* fp; s32 idx, nchr; BYTE buf[64]; } putbuff; static void putc_bfd ( putbuff* pb, TCHAR c ) { UINT bw; s32 i; if ((_USE_STRFUNC == 2) && (c == '\n')) { /* LF -> CRLF conversion */ putc_bfd(pb, '\r'); } i = pb->idx; /* Buffer write index (-1:error) */ if (i < 0) { return; } #if _USE_LFN && _LFN_UNICODE #if _STRF_ENCODE == 3 /* Write a character in UTF-8 */ if (c < 0x80) { /* 7-bit */ pb->buf[i++] = (BYTE)c; } else { if (c < 0x800) { /* 11-bit */ pb->buf[i++] = (BYTE)(0xC0 | c >> 6); } else { /* 16-bit */ pb->buf[i++] = (BYTE)(0xE0 | c >> 12); pb->buf[i++] = (BYTE)(0x80 | (c >> 6 & 0x3F)); } pb->buf[i++] = (BYTE)(0x80 | (c & 0x3F)); } #elif _STRF_ENCODE == 2 /* Write a character in UTF-16BE */ pb->buf[i++] = (BYTE)(c >> 8); pb->buf[i++] = (BYTE)c; #elif _STRF_ENCODE == 1 /* Write a character in UTF-16LE */ pb->buf[i++] = (BYTE)c; pb->buf[i++] = (BYTE)(c >> 8); #else /* Write a character in ANSI/OEM */ c = ff_convert(c, 0); /* Unicode -> OEM */ if ((!c) != 0U) { c = '?'; } if (c >= 0x100) { pb->buf[i++] = (BYTE)(c >> 8); } pb->buf[i++] = (BYTE)c; #endif #else /* Write a character without conversion */ pb->buf[i++] = (BYTE)c; #endif if (i >= (int)(sizeof pb->buf) - 3) { /* Write buffered characters to the file */ f_write(pb->fp, pb->buf, (UINT)i, &bw); i = (bw == (UINT)i) ? 0 : -1; } pb->idx = i; pb->nchr++; } int f_putc ( TCHAR c, /* A character to be output */ FIL* fp /* Pointer to the file object */ ) { putbuff pb; UINT nw; pb.fp = fp; /* Initialize output buffer */ pb.nchr = pb.idx = 0; putc_bfd(&pb, c); /* Put a character */ if ( pb.idx >= 0 /* Flush buffered characters to the file */ && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK && (UINT)pb.idx == nw) { return pb.nchr; } return EOF; } /*-----------------------------------------------------------------------*/ /* Put a string to the file */ /*-----------------------------------------------------------------------*/ int f_puts ( const TCHAR* str, /* Pointer to the string to be output */ FIL* fp /* Pointer to the file object */ ) { putbuff pb; UINT nw; pb.fp = fp; /* Initialize output buffer */ pb.nchr = pb.idx = 0; while (*str) { /* Put the string */ putc_bfd(&pb, *str++); } if ( pb.idx >= 0 /* Flush buffered characters to the file */ && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK && (UINT)pb.idx == nw) { return pb.nchr; } return EOF; } /*-----------------------------------------------------------------------*/ /* Put a formatted string to the file */ /*-----------------------------------------------------------------------*/ int f_printf ( FIL* fp, /* Pointer to the file object */ const TCHAR* fmt, /* Pointer to the format string */ ... /* Optional arguments... */ ) { va_list arp; BYTE f, r; UINT nw, i, j, w; DWORD v; TCHAR c, d, s[16], *p; putbuff pb; pb.fp = fp; /* Initialize output buffer */ pb.nchr = pb.idx = 0; va_start(arp, fmt); for (;;) { c = *fmt++; if (c == 0) { break; /* End of string */ } if (c != '%') { /* Non escape character */ putc_bfd(&pb, c); } continue; } w = f = 0; c = *fmt++; if (c == '0') { /* Flag: '0' padding */ f = 1; c = *fmt++; } else { if (c == '-') { /* Flag: left justified */ f = 2; c = *fmt++; } } while (IsDigit(c)) { /* Precision */ w = w * 10 + c - '0'; c = *fmt++; } if ((c == 'l') || (c == 'L')) { /* Prefix: Size is long int */ f |= 4; c = *fmt++; } if ((!c) != 0U) { break; } d = c; if (IsLower(d)) { d -= 0x20; } switch (d) { /* Type is... */ case 'S' : /* String */ p = va_arg(arp, TCHAR*); for (j = 0; p[j]; j++) ; if (!(f & 2)) { while (j++ < w) putc_bfd(&pb, ' '); } while (*p) { putc_bfd(&pb, *p++); } while (j++ < w) { putc_bfd(&pb, ' '); } continue; case 'C' : /* Character */ putc_bfd(&pb, (TCHAR)va_arg(arp, int)); continue; case 'B' : /* Binary */ r = 2; break; case 'O' : /* Octal */ r = 8; break; case 'D' : /* Signed decimal */ case 'U' : /* Unsigned decimal */ r = 10; break; case 'X' : /* Hexdecimal */ r = 16; break; default: /* Unknown type (pass-through) */ putc_bfd(&pb, c); continue; } /* Get an argument and put it in numeral */ v = (f & 4) ? (DWORD)va_arg(arp, long) : ((d == 'D') ? (DWORD)(long)va_arg(arp, int) : (DWORD)va_arg(arp, unsigned int)); if (d == 'D' && (v & 0x80000000)) { v = 0 - v; f |= 8; } i = 0; do { d = (TCHAR)(v % r); v /= r; if (d > 9) { d += (c == 'x') ? 0x27 : 0x07; } s[i++] = d + '0'; } while (v && i < sizeof s / sizeof s[0]); if (f & 8) { s[i++] = '-'; } j = i; d = (f & 1) ? '0' : ' '; while (((!(f & 2)) != 0U) && ((j++ < w) != 0U)) { putc_bfd(&pb, d); } do putc_bfd(&pb, s[--i]); while (i); while (j++ < w) { putc_bfd(&pb, d); } } va_end(arp); if ( pb.idx >= 0 /* Flush buffered characters to the file */ && f_write(pb.fp, pb.buf, (UINT)pb.idx, &nw) == FR_OK && (UINT)pb.idx == nw) { return pb.nchr; } return EOF; } #endif /* !_FS_READONLY */ #endif /* _USE_STRFUNC */ #endif /* XPAR_PS7_SD_0_S_AXI_BASEADDR */