diff options
Diffstat (limited to '3rdparty/fatfs-0.10b/src/ff.c')
| -rw-r--r-- | 3rdparty/fatfs-0.10b/src/ff.c | 4588 |
1 files changed, 4588 insertions, 0 deletions
diff --git a/3rdparty/fatfs-0.10b/src/ff.c b/3rdparty/fatfs-0.10b/src/ff.c new file mode 100644 index 00000000..d7d690c7 --- /dev/null +++ b/3rdparty/fatfs-0.10b/src/ff.c @@ -0,0 +1,4588 @@ +/*----------------------------------------------------------------------------/ +/ 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 "ff.h" /* Declarations of FatFs API */ +#include "diskio.h" /* Declarations of disk I/O functions */ + + + + +/*-------------------------------------------------------------------------- + + Module Private Definitions + +---------------------------------------------------------------------------*/ + +#if _FATFS != 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) ((UINT)_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 0x81 /* DBC 1st byte range 1 start */ +#define _DF1E 0x9F /* DBC 1st byte range 1 end */ +#define _DF2S 0xE0 /* DBC 1st byte range 2 start */ +#define _DF2E 0xFC /* DBC 1st byte range 2 end */ +#define _DS1S 0x40 /* DBC 2nd byte range 1 start */ +#define _DS1E 0x7E /* DBC 2nd byte range 1 end */ +#define _DS2S 0x80 /* DBC 2nd byte range 2 start */ +#define _DS2E 0xFC /* DBC 2nd byte range 2 end */ + +#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x40 +#define _DS1E 0x7E +#define _DS2S 0x80 +#define _DS2E 0xFE + +#elif _CODE_PAGE == 949 /* Korean */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x41 +#define _DS1E 0x5A +#define _DS2S 0x61 +#define _DS2E 0x7A +#define _DS3S 0x81 +#define _DS3E 0xFE + +#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x40 +#define _DS1E 0x7E +#define _DS2S 0xA1 +#define _DS2E 0xFE + +#elif _CODE_PAGE == 437 /* U.S. (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 720 /* Arabic (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 737 /* Greek (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \ + 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 775 /* Baltic (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF} + +#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \ + 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \ + 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 857 /* Turkish (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 862 /* Hebrew (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 866 /* Russian (OEM) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF} + +#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \ + 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF} + +#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \ + 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F} + +#elif _CODE_PAGE == 1253 /* Greek (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \ + 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF} + +#elif _CODE_PAGE == 1254 /* Turkish (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \ + 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F} + +#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 1256 /* Arabic (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 1257 /* Baltic (Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF} + +#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */ +#define _DF1S 0 +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \ + 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F} + +#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */ +#if _USE_LFN +#error Cannot use LFN feature without valid code page. +#endif +#define _DF1S 0 + +#else +#error Unknown code page + +#endif + + +/* Character code support macros */ +#define IsUpper(c) (((c)>='A')&&((c)<='Z')) +#define IsLower(c) (((c)>='a')&&((c)<='z')) +#define IsDigit(c) (((c)>='0')&&((c)<='9')) + +#if _DF1S /* Code page is DBCS */ + +#ifdef _DF2S /* Two 1st byte areas */ +#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E)) +#else /* One 1st byte area */ +#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) +#endif + +#ifdef _DS3S /* Three 2nd byte areas */ +#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E)) +#else /* Two 2nd byte areas */ +#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E)) +#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 0x01 /* Out of 8.3 format */ +#define NS_LFN 0x02 /* Force to create LFN entry */ +#define NS_LAST 0x04 /* Last segment */ +#define NS_BODY 0x08 /* Lower case flag (body) */ +#define NS_EXT 0x10 /* Lower case flag (ext) */ +#define NS_DOT 0x20 /* Dot entry */ + + +/* 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 0 /* Jump instruction (3) */ +#define BS_OEMName 3 /* OEM name (8) */ +#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */ +#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */ +#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */ +#define BPB_NumFATs 16 /* Number of FAT copies (1) */ +#define BPB_RootEntCnt 17 /* Number of root directory entries for FAT12/16 (2) */ +#define BPB_TotSec16 19 /* Volume size [sector] (2) */ +#define BPB_Media 21 /* Media descriptor (1) */ +#define BPB_FATSz16 22 /* FAT size [sector] (2) */ +#define BPB_SecPerTrk 24 /* Track size [sector] (2) */ +#define BPB_NumHeads 26 /* Number of heads (2) */ +#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */ +#define BPB_TotSec32 32 /* Volume size [sector] (4) */ +#define BS_DrvNum 36 /* Physical drive number (2) */ +#define BS_BootSig 38 /* Extended boot signature (1) */ +#define BS_VolID 39 /* Volume serial number (4) */ +#define BS_VolLab 43 /* Volume label (8) */ +#define BS_FilSysType 54 /* File system type (1) */ +#define BPB_FATSz32 36 /* FAT size [sector] (4) */ +#define BPB_ExtFlags 40 /* Extended flags (2) */ +#define BPB_FSVer 42 /* File system version (2) */ +#define BPB_RootClus 44 /* Root directory first cluster (4) */ +#define BPB_FSInfo 48 /* Offset of FSINFO sector (2) */ +#define BPB_BkBootSec 50 /* Offset of backup boot sector (2) */ +#define BS_DrvNum32 64 /* Physical drive number (2) */ +#define BS_BootSig32 66 /* Extended boot signature (1) */ +#define BS_VolID32 67 /* Volume serial number (4) */ +#define BS_VolLab32 71 /* Volume label (8) */ +#define BS_FilSysType32 82 /* File system type (1) */ +#define FSI_LeadSig 0 /* FSI: Leading signature (4) */ +#define FSI_StrucSig 484 /* FSI: Structure signature (4) */ +#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */ +#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */ +#define MBR_Table 446 /* MBR: Partition table offset (2) */ +#define SZ_PTE 16 /* MBR: Size of a partition table entry */ +#define BS_55AA 510 /* Signature word (2) */ + +#define DIR_Name 0 /* Short file name (11) */ +#define DIR_Attr 11 /* Attribute (1) */ +#define DIR_NTres 12 /* NT flag (1) */ +#define DIR_CrtTimeTenth 13 /* Created time sub-second (1) */ +#define DIR_CrtTime 14 /* Created time (2) */ +#define DIR_CrtDate 16 /* Created date (2) */ +#define DIR_LstAccDate 18 /* Last accessed date (2) */ +#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */ +#define DIR_WrtTime 22 /* Modified time (2) */ +#define DIR_WrtDate 24 /* Modified date (2) */ +#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */ +#define DIR_FileSize 28 /* File size (4) */ +#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */ +#define LDIR_Attr 11 /* LFN attribute (1) */ +#define LDIR_Type 12 /* LFN type (1) */ +#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */ +#define LDIR_FstClusLO 26 /* Filled by zero (0) */ +#define SZ_DIR 32 /* Size of a directory entry */ +#define LLE 0x40 /* Last long entry flag in LDIR_Ord */ +#define DDE 0xE5 /* Deleted directory entry mark in DIR_Name[0] */ +#define NDDE 0x05 /* Replacement of the character collides with DDE */ + + + + +/*------------------------------------------------------------*/ +/* 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 + +static +WORD Fsid; /* File system mount ID */ + +#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*)dst; + const BYTE *s = (const BYTE*)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--) + *d++ = *s++; +} + +/* Fill memory */ +static +void mem_set (void* dst, int val, UINT cnt) { + BYTE *d = (BYTE*)dst; + + while (cnt--) + *d++ = (BYTE)val; +} + +/* Compare memory to memory */ +static +int mem_cmp (const void* dst, const void* src, UINT cnt) { + const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src; + int r = 0; + + while (cnt-- && (r = *d++ - *s++) == 0) ; + return r; +} + +/* Check if chr is contained in the string */ +static +int chk_chr (const char* str, int chr) { + while (*str && *str != chr) str++; + return *str; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Request/Release grant to access the volume */ +/*-----------------------------------------------------------------------*/ +#if _FS_REENTRANT +static +int 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 */ + int 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 +int 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 */ + int 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) { /* Write back the sector if it is dirty */ + wsect = fs->winsect; /* Current sector number */ + if (disk_write(fs->drv, fs->win, wsect, 1)) + return FR_DISK_ERR; + fs->wflag = 0; + if (wsect - fs->fatbase < fs->fsize) { /* Is it in the FAT area? */ + for (nf = fs->n_fats; nf >= 2; nf--) { /* Reflect the change to all FAT copies */ + wsect += fs->fsize; + disk_write(fs->drv, fs->win, wsect, 1); + } + } + } + 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, 1)) + 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; + + + res = sync_window(fs); + if (res == FR_OK) { + /* Update FSINFO sector if needed */ + if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) { + /* Create FSINFO structure */ + mem_set(fs->win, 0, SS(fs)); + ST_WORD(fs->win+BS_55AA, 0xAA55); + ST_DWORD(fs->win+FSI_LeadSig, 0x41615252); + ST_DWORD(fs->win+FSI_StrucSig, 0x61417272); + ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust); + ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust); + /* Write it into the FSINFO sector */ + fs->winsect = fs->volbase + 1; + disk_write(fs->drv, fs->win, fs->winsect, 1); + fs->fsi_flag = 0; + } + /* Make sure that no pending write process in the physical drive */ + if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != 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 */ +) +{ + clst -= 2; + if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */ + return clst * fs->csize + fs->database; +} + + + + +/*-----------------------------------------------------------------------*/ +/* FAT access - Read value of a FAT entry */ +/*-----------------------------------------------------------------------*/ + + +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; + + + if (clst < 2 || clst >= fs->n_fatent) /* Check range */ + return 1; + + switch (fs->fs_type) { + case FS_FAT12 : + bc = (UINT)clst; bc += bc / 2; + if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; + wc = fs->win[bc % SS(fs)]; bc++; + if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break; + wc |= fs->win[bc % SS(fs)] << 8; + return clst & 1 ? wc >> 4 : (wc & 0xFFF); + + case FS_FAT16 : + if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break; + p = &fs->win[clst * 2 % SS(fs)]; + return LD_WORD(p); + + case FS_FAT32 : + if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break; + p = &fs->win[clst * 4 % SS(fs)]; + return LD_DWORD(p) & 0x0FFFFFFF; + + default: + return 1; + } + + return 0xFFFFFFFF; /* 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; + + + if (clst < 2 || clst >= fs->n_fatent) { /* 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 + (bc / SS(fs))); + if (res != FR_OK) break; + p = &fs->win[bc % SS(fs)]; + *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val; + bc++; + fs->wflag = 1; + res = move_window(fs, fs->fatbase + (bc / SS(fs))); + if (res != FR_OK) break; + p = &fs->win[bc % SS(fs)]; + *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F)); + 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)val); + 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)]; + val |= LD_DWORD(p) & 0xF0000000; + ST_DWORD(p, val); + break; + + default : + res = FR_INT_ERR; + } + fs->wflag = 1; + } + + return res; +} +#endif /* !_FS_READONLY */ + + + + +/*-----------------------------------------------------------------------*/ +/* FAT handling - Remove a cluster chain */ +/*-----------------------------------------------------------------------*/ +#if !_FS_READONLY +static +FRESULT remove_chain ( + FATFS* fs, /* File system object */ + DWORD clst /* Cluster# to remove a chain from */ +) +{ + FRESULT res; + DWORD nxt; +#if _USE_ERASE + DWORD scl = clst, ecl = clst, rt[2]; +#endif + + if (clst < 2 || clst >= fs->n_fatent) { /* Check range */ + res = FR_INT_ERR; + + } else { + res = FR_OK; + while (clst < fs->n_fatent) { /* Not a last link? */ + nxt = get_fat(fs, clst); /* Get cluster status */ + if (nxt == 0) break; /* Empty cluster? */ + if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */ + if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */ + res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */ + if (res != FR_OK) break; + if (fs->free_clust != 0xFFFFFFFF) { /* Update FSINFO */ + fs->free_clust++; + fs->fsi_flag |= 1; + } +#if _USE_ERASE + if (ecl + 1 == nxt) { /* Is next cluster contiguous? */ + ecl = nxt; + } else { /* End of contiguous clusters */ + rt[0] = clust2sect(fs, scl); /* Start sector */ + rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */ + disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, rt); /* Erase the block */ + scl = ecl = nxt; + } +#endif + clst = nxt; /* Next cluster */ + } + } + + 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 == 0) { /* Create a new chain */ + scl = fs->last_clust; /* Get suggested start point */ + if (!scl || scl >= fs->n_fatent) scl = 1; + } + else { /* Stretch the current chain */ + cs = get_fat(fs, clst); /* Check the cluster status */ + if (cs < 2) return 1; /* Invalid value */ + if (cs == 0xFFFFFFFF) 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) { /* Check wrap around */ + ncl = 2; + if (ncl > scl) return 0; /* No free cluster */ + } + cs = get_fat(fs, ncl); /* Get the cluster status */ + if (cs == 0) break; /* Found a free cluster */ + if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */ + return cs; + if (ncl == scl) return 0; /* No free cluster */ + } + + res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */ + if (res == FR_OK && clst != 0) { + res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */ + } + if (res == FR_OK) { + fs->last_clust = ncl; /* Update FSINFO */ + if (fs->free_clust != 0xFFFFFFFF) { + fs->free_clust--; + fs->fsi_flag |= 1; + } + } else { + ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; + } + + return ncl; /* Return new cluster number 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) 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 */ +) +{ + DWORD clst, sect; + UINT ic; + + + dp->index = (WORD)idx; /* Current index */ + clst = dp->sclust; /* Table start cluster (0:root) */ + if (clst == 1 || clst >= dp->fs->n_fatent) /* Check start cluster range */ + return FR_INT_ERR; + if (!clst && dp->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */ + clst = dp->fs->dirbase; + + if (clst == 0) { /* Static table (root-directory in FAT12/16) */ + if (idx >= 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 = SS(dp->fs) / SZ_DIR * dp->fs->csize; /* Entries per cluster */ + while (idx >= ic) { /* Follow cluster chain */ + clst = get_fat(dp->fs, clst); /* Get next cluster */ + if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ + if (clst < 2 || clst >= dp->fs->n_fatent) /* Reached to end of table or internal error */ + return FR_INT_ERR; + idx -= ic; + } + sect = clust2sect(dp->fs, clst); + } + dp->clust = clst; /* Current cluster# */ + if (!sect) return FR_INT_ERR; + dp->sect = sect + idx / (SS(dp->fs) / 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 */ + int stretch /* 0: Do not stretch table, 1: Stretch table if needed */ +) +{ + DWORD clst; + UINT i; + + + i = dp->index + 1; + if (!(i & 0xFFFF) || !dp->sect) /* Report EOT when index has reached 65535 */ + return FR_NO_FILE; + + if (!(i % (SS(dp->fs) / SZ_DIR))) { /* Sector changed? */ + dp->sect++; /* Next sector */ + + if (!dp->clust) { /* 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 - 1)) == 0) { /* Cluster changed? */ + clst = get_fat(dp->fs, dp->clust); /* Get next cluster */ + if (clst <= 1) return FR_INT_ERR; + if (clst == 0xFFFFFFFF) return FR_DISK_ERR; + if (clst >= dp->fs->n_fatent) { /* If it reached end of dynamic table, */ +#if !_FS_READONLY + UINT c; + if (!stretch) return FR_NO_FILE; /* If do not stretch, report EOT */ + clst = create_chain(dp->fs, dp->clust); /* Stretch cluster chain */ + if (clst == 0) return FR_DENIED; /* No free cluster */ + if (clst == 1) return FR_INT_ERR; + if (clst == 0xFFFFFFFF) return FR_DISK_ERR; + /* Clean-up stretched table */ + if (sync_window(dp->fs)) 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 = 0; c < dp->fs->csize; c++) { /* Fill the new cluster with 0 */ + dp->fs->wflag = 1; + if (sync_window(dp->fs)) return FR_DISK_ERR; + dp->fs->winsect++; + } + dp->fs->winsect -= c; /* Rewind window offset */ +#else + if (!stretch) 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, 0); + if (res == FR_OK) { + n = 0; + do { + res = move_window(dp->fs, dp->sect); + if (res != FR_OK) break; + if (dp->dir[0] == DDE || dp->dir[0] == 0) { /* Is it a blank entry? */ + if (++n == nent) break; /* A block of contiguous entries is found */ + } else { + n = 0; /* 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 = 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 +int 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 +int 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, *dir; +#if _USE_LFN + BYTE a, ord, sum; +#endif + + res = dir_sdi(dp, 0); /* Rewind directory object */ + if (res != FR_OK) return res; + +#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; + dir = dp->dir; /* Ptr to the directory entry of current index */ + c = dir[DIR_Name]; + if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ +#if _USE_LFN /* LFN configuration */ + a = dir[DIR_Attr] & AM_MASK; + if (c == 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 = dir[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 == dir[LDIR_Chksum] && cmp_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF; + } + } else { /* An SFN entry is found */ + if (!ord && sum == sum_sfn(dir)) 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 (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dp->fn, 11)) /* 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 */ + int vol /* Filtered by 0:file/directory or 1:volume label */ +) +{ + FRESULT res; + BYTE a, c, *dir; +#if _USE_LFN + BYTE ord = 0xFF, sum = 0xFF; +#endif + + res = FR_NO_FILE; + while (dp->sect) { + res = move_window(dp->fs, dp->sect); + if (res != FR_OK) break; + dir = dp->dir; /* Ptr to the directory entry of current index */ + c = dir[DIR_Name]; + if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ + a = dir[DIR_Attr] & AM_MASK; +#if _USE_LFN /* LFN configuration */ + if (c == DDE || (!_FS_RPATH && c == '.') || (int)(a == AM_VOL) != vol) { /* An entry without valid data */ + ord = 0xFF; + } else { + if (a == AM_LFN) { /* An LFN entry is found */ + if (c & LLE) { /* Is it start of LFN sequence? */ + sum = dir[LDIR_Chksum]; + c &= ~LLE; ord = c; + dp->lfn_idx = dp->index; + } + /* Check LFN validity and capture it */ + ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dp->lfn, dir)) ? ord - 1 : 0xFF; + } else { /* An SFN entry is found */ + if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */ + dp->lfn_idx = 0xFFFF; /* It has no LFN. */ + break; + } + } +#else /* Non LFN configuration */ + if (c != DDE && (_FS_RPATH || c != '.') && a != AM_LFN && (int)(a == AM_VOL) == vol) /* 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 = 0; + + 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, 1); /* 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, 11); /* Put SFN */ +#if _USE_LFN + dp->dir[DIR_NTres] = dp->fn[NS] & (NS_BODY | NS_EXT); /* Put NT flag */ +#endif + dp->fs->wflag = 1; + } + } + + return res; +} +#endif /* !_FS_READONLY */ + + + + +/*-----------------------------------------------------------------------*/ +/* Remove an object from the directory */ +/*-----------------------------------------------------------------------*/ +#if !_FS_READONLY && !_FS_MINIMIZE +static +FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */ + DIR* dp /* Directory object pointing the entry to be removed */ +) +{ + FRESULT res; +#if _USE_LFN /* LFN configuration */ + UINT i; + + i = dp->index; /* SFN index */ + res = dir_sdi(dp, (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 */ + res = dir_sdi(dp, dp->index); + 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 = 1; + } + } +#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) { /* Get SFN */ + BYTE *dir = dp->dir; + + i = 0; + while (i < 11) { /* Copy name body and extension */ + c = (TCHAR)dir[i++]; + if (c == ' ') continue; /* Skip padding spaces */ + if (c == NDDE) c = (TCHAR)DDE; /* Restore replaced DDE character */ + if (i == 9) *p++ = '.'; /* Insert a . if extension is exist */ +#if _USE_LFN + if (IsUpper(c) && (dir[DIR_NTres] & (i >= 9 ? 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) c = '?'; +#endif +#endif + *p++ = c; + } + fno->fattrib = dir[DIR_Attr]; /* Attribute */ + fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */ + fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */ + fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */ + } + *p = 0; /* 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 TCHAR *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) 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 char *p; + + /* Create file name in directory form */ + for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */ + sfn = dp->fn; + mem_set(sfn, ' ', 11); + si = i = b = 0; ni = 8; +#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++]; + if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */ + if (c == '.' || i >= ni) { + if (ni != 8 || c != '.') return FR_INVALID_NAME; + i = 8; ni = 11; + b <<= 2; continue; + } + if (c >= 0x80) { /* Extended character? */ + b |= 3; /* Eliminate NT flag */ +#ifdef _EXCVT + c = ExCvt[c - 0x80]; /* 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 */ + if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */ + return FR_INVALID_NAME; + sfn[i++] = c; + sfn[i++] = d; + } else { /* Single byte code */ + if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */ + return FR_INVALID_NAME; + if (IsUpper(c)) { /* ASCII large capital? */ + b |= 2; + } else { + if (IsLower(c)) { /* ASCII small capital? */ + b |= 1; c -= 0x20; + } + } + sfn[i++] = c; + } + } + *path = &p[si]; /* Return pointer to the next segment */ + c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */ + + if (!i) return FR_INVALID_NAME; /* Reject nul string */ + if (sfn[0] == DDE) sfn[0] = NDDE; /* When first character collides with DDE, replace it with 0x05 */ + + if (ni == 8) b <<= 2; + if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */ + if ((b & 0x0C) == 0x04) 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 *dir, ns; + + +#if _FS_RPATH + if (*path == '/' || *path == '\\') { /* There is a heading separator */ + path++; dp->sclust = 0; /* Strip it and start from the root directory */ + } else { /* No heading separator */ + dp->sclust = dp->fs->cdir; /* Start from the current directory */ + } +#else + if (*path == '/' || *path == '\\') /* Strip heading separator if exist */ + path++; + dp->sclust = 0; /* Always start from the root directory */ +#endif + + if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */ + res = dir_sdi(dp, 0); + dp->dir = 0; + } else { /* Follow path */ + for (;;) { + res = create_name(dp, &path); /* Get a segment name of the path */ + if (res != FR_OK) break; + res = dir_find(dp); /* Find an object with the sagment name */ + ns = dp->fn[NS]; + if (res != FR_OK) { /* Failed to find the object */ + if (res == FR_NO_FILE) { /* Object is not found */ + if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exist, */ + dp->sclust = 0; dp->dir = 0; /* it is the root directory and stay there */ + if (!(ns & NS_LAST)) 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 (!(ns & NS_LAST)) res = FR_NO_PATH; /* Adjust error code if not last segment */ + } + } + break; + } + if (ns & NS_LAST) break; /* Last segment matched. Function completed. */ + dir = dp->dir; /* Follow the sub-directory */ + if (!(dir[DIR_Attr] & AM_DIR)) { /* It is not a sub-directory and cannot follow */ + res = FR_NO_PATH; break; + } + dp->sclust = ld_clust(dp->fs, dir); + } + } + + return res; +} + + + + +/*-----------------------------------------------------------------------*/ +/* Get logical drive number from path name */ +/*-----------------------------------------------------------------------*/ + +static +int 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; + int vol = -1; + + + if (*path) { /* If the pointer is not a null */ + for (tt = *path; (UINT)*tt >= (_USE_LFN ? ' ' : '!') && *tt != ':'; tt++) ; /* Find ':' in the path */ + if (*tt == ':') { /* If a ':' is exist in the path name */ + tp = *path; + i = *tp++ - '0'; + if (i < 10 && tp == tt) { /* Is there a numeric drive id? */ + if (i < _VOLUMES) { /* If a drive id is found, get the value and strip it */ + vol = (int)i; + *path = ++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++; + 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 = (int)i; + *path = tt; + } +#endif + } + return vol; + } +#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 = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */ + if (move_window(fs, sect) != FR_OK) /* Load boot record */ + return 3; + + if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */ + return 2; + + if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */ + return 0; + if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */ + return 0; + + return 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 */ +) +{ + BYTE fmt; + int 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) 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) { /* If the volume has been mounted */ + stat = disk_status(fs->drv); + if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized */ + if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* 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 = 0; /* 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) /* Check if the initialization succeeded */ + return FR_NOT_READY; /* Failed to initialize due to no medium or hard error */ + if (!_FS_READONLY && wmode && (stat & STA_PROTECT)) /* Check disk write protection if needed */ + return FR_WRITE_PROTECTED; +#if _MAX_SS != _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 = 0; + fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT boot sector as SFD */ + if (fmt == 1 || (!fmt && (LD2PT(vol)))) { /* Not an FAT boot sector or forced partition number */ + UINT i; + DWORD br[4]; + + for (i = 0; i < 4; i++) { /* Get partition offset */ + BYTE *pt = fs->win+MBR_Table + i * SZ_PTE; + br[i] = pt[4] ? LD_DWORD(&pt[8]) : 0; + } + i = LD2PT(vol); /* Partition number: 0:auto, 1-4:forced */ + if (i) i--; + do { /* Find an FAT volume */ + bsect = br[i]; + fmt = bsect ? check_fs(fs, bsect) : 2; /* Check the partition */ + } while (!LD2PT(vol) && fmt && ++i < 4); + } + if (fmt == 3) return FR_DISK_ERR; /* An error occured in the disk I/O layer */ + if (fmt) 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) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */ + return FR_NO_FILESYSTEM; + + fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */ + if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32); + fs->fsize = fasize; + + fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */ + if (fs->n_fats != 1 && fs->n_fats != 2) /* (Must be 1 or 2) */ + return FR_NO_FILESYSTEM; + fasize *= fs->n_fats; /* Number of sectors for FAT area */ + + fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */ + if (!fs->csize || (fs->csize & (fs->csize - 1))) /* (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)) /* (Must be sector aligned) */ + return FR_NO_FILESYSTEM; + + tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */ + if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32); + + nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */ + if (!nrsv) return FR_NO_FILESYSTEM; /* (Must not be 0) */ + + /* Determine the FAT sub type */ + sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */ + if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ + nclst = (tsect - sysect) / fs->csize; /* Number of clusters */ + if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ + fmt = FS_FAT12; + if (nclst >= MIN_FAT16) fmt = FS_FAT16; + if (nclst >= MIN_FAT32) fmt = FS_FAT32; + + /* Boundaries and Limits */ + fs->n_fatent = nclst + 2; /* 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) 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 * 4; /* (Needed FAT size) */ + } else { + if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */ + fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */ + szbfat = (fmt == FS_FAT16) ? /* (Needed FAT size) */ + fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1); + } + 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 = fs->free_clust = 0xFFFFFFFF; + + /* Get fsinfo if available */ + fs->fsi_flag = 0x80; +#if (_FS_NOFSINFO & 3) != 3 + if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo is 1 */ + && LD_WORD(fs->win+BPB_FSInfo) == 1 + && move_window(fs, bsect + 1) == FR_OK) + { + fs->fsi_flag = 0; + if (LD_WORD(fs->win+BS_55AA) == 0xAA55 /* Load FSINFO data if available */ + && LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 + && LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) + { +#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 */ + 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*)obj; /* Assuming offset of .fs and .id in the FIL/DIR structure is identical */ + + + if (!fil || !fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id) + return FR_INVALID_OBJECT; + + ENTER_FF(fil->fs); /* Lock file system */ + + if (disk_status(fil->fs->drv) & STA_NOINIT) + return FR_NOT_READY; + + return FR_OK; +} + + + + +/*-------------------------------------------------------------------------- + + 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; + int 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) { +#if _FS_LOCK + clear_lock(cfs); +#endif +#if _FS_REENTRANT /* Discard sync object of the current volume */ + if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR; +#endif + cfs->fs_type = 0; /* Clear old fs object */ + } + + if (fs) { + fs->fs_type = 0; /* Clear new fs object */ +#if _FS_REENTRANT /* Create sync object for the new volume */ + if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR; +#endif + } + FatFs[vol] = fs; /* Register new fs object */ + + if (!fs || opt != 1) return FR_OK; /* Do not mount now, it will be mounted later */ + + res = find_volume(&fs, &path, 0); /* 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; + BYTE *dir; + DEF_NAMEBUF; + + + if (!fp) return FR_INVALID_OBJECT; + fp->fs = 0; /* 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, 0); +#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) /* 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)) { + 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)) { /* Cannot overwrite it (R/O or DIR) */ + res = FR_DENIED; + } else { + if (mode & FA_CREATE_NEW) /* Cannot create as new file */ + res = FR_EXIST; + } + } + if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */ + dw = get_fattime(); /* Created time */ + ST_DWORD(dir+DIR_CrtTime, dw); + dir[DIR_Attr] = 0; /* Reset attribute */ + ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */ + cl = ld_clust(dj.fs, dir); /* Get start cluster */ + st_clust(dir, 0); /* cluster = 0 */ + dj.fs->wflag = 1; + if (cl) { /* Remove the cluster chain if exist */ + dw = dj.fs->winsect; + res = remove_chain(dj.fs, cl); + if (res == FR_OK) { + dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */ + res = move_window(dj.fs, dw); + } + } + } + } + else { /* Open an existing file */ + if (res == FR_OK) { /* Follow succeeded */ + if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */ + res = FR_NO_FILE; + } else { + if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */ + res = FR_DENIED; + } + } + } + if (res == FR_OK) { + if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */ + mode |= FA__WRITTEN; + fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */ + fp->dir_ptr = dir; +#if _FS_LOCK + fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0); + if (!fp->lockid) res = FR_INT_ERR; +#endif + } + +#else /* R/O configuration */ + if (res == FR_OK) { /* Follow succeeded */ + dir = dj.dir; + if (!dir) { /* Current directory itself */ + res = FR_INVALID_NAME; + } else { + if (dir[DIR_Attr] & AM_DIR) /* It is a directory */ + res = FR_NO_FILE; + } + } +#endif + FREE_BUF(); + + if (res == FR_OK) { + fp->flag = mode; /* File access mode */ + fp->err = 0; /* Clear error flag */ + fp->sclust = ld_clust(dj.fs, dir); /* File start cluster */ + fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */ + fp->fptr = 0; /* File pointer */ + fp->dsect = 0; +#if _USE_FASTSEEK + fp->cltbl = 0; /* 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*)buff; + + + *br = 0; /* Clear read byte counter */ + + res = validate(fp); /* Check validity */ + 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)) /* Check access mode */ + LEAVE_FF(fp->fs, FR_DENIED); + remain = fp->fsize - fp->fptr; + if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */ + + for ( ; btr; /* Repeat until all data read */ + rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) { + if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ + csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ + if (!csect) { /* On the cluster boundary? */ + if (fp->fptr == 0) { /* On the top of the file? */ + clst = fp->sclust; /* Follow from the origin */ + } else { /* Middle or end of the file */ +#if _USE_FASTSEEK + if (fp->cltbl) + clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ + else +#endif + clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */ + } + if (clst < 2) ABORT(fp->fs, FR_INT_ERR); + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + fp->clust = clst; /* Update current cluster */ + } + sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ + if (!sect) ABORT(fp->fs, FR_INT_ERR); + sect += csect; + cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */ + if (cc) { /* Read maximum contiguous sectors directly */ + if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ + cc = fp->fs->csize - csect; + if (disk_read(fp->fs->drv, rbuff, sect, cc)) + 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 && fp->fs->winsect - sect < cc) + mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs)); +#else + if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc) + 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 */ + continue; + } +#if !_FS_TINY + if (fp->dsect != sect) { /* Load data sector if not in cache */ +#if !_FS_READONLY + if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1)) + ABORT(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + if (disk_read(fp->fs->drv, fp->buf, sect, 1)) /* Fill sector cache */ + ABORT(fp->fs, FR_DISK_ERR); + } +#endif + fp->dsect = sect; + } + rcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */ + if (rcnt > btr) rcnt = btr; +#if _FS_TINY + if (move_window(fp->fs, fp->dsect)) /* Move sector window */ + ABORT(fp->fs, FR_DISK_ERR); + mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ +#else + mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */ +#endif + } + + LEAVE_FF(fp->fs, FR_OK); +} + + + + +#if !_FS_READONLY +/*-----------------------------------------------------------------------*/ +/* Write File */ +/*-----------------------------------------------------------------------*/ + +FRESULT f_write ( + FIL* fp, /* Pointer to the file object */ + const void *buff, /* Pointer to the data to be written */ + UINT btw, /* Number of bytes to write */ + UINT* bw /* Pointer to number of bytes written */ +) +{ + FRESULT res; + DWORD clst, sect; + UINT wcnt, cc; + const BYTE *wbuff = (const BYTE*)buff; + BYTE csect; + + + *bw = 0; /* Clear write byte counter */ + + res = validate(fp); /* Check validity */ + 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_WRITE)) /* Check access mode */ + LEAVE_FF(fp->fs, FR_DENIED); + if (fp->fptr + btw < fp->fptr) btw = 0; /* File size cannot reach 4GB */ + + for ( ; btw; /* Repeat until all data written */ + wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) { + if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */ + csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */ + if (!csect) { /* On the cluster boundary? */ + if (fp->fptr == 0) { /* On the top of the file? */ + clst = fp->sclust; /* Follow from the origin */ + if (clst == 0) /* When no cluster is allocated, */ + clst = create_chain(fp->fs, 0); /* Create a new cluster chain */ + } else { /* Middle or end of the file */ +#if _USE_FASTSEEK + if (fp->cltbl) + clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */ + else +#endif + clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */ + } + if (clst == 0) break; /* Could not allocate a new cluster (disk full) */ + if (clst == 1) ABORT(fp->fs, FR_INT_ERR); + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + fp->clust = clst; /* Update current cluster */ + if (fp->sclust == 0) fp->sclust = clst; /* Set start cluster if the first write */ + } +#if _FS_TINY + if (fp->fs->winsect == fp->dsect && sync_window(fp->fs)) /* Write-back sector cache */ + ABORT(fp->fs, FR_DISK_ERR); +#else + if (fp->flag & FA__DIRTY) { /* Write-back sector cache */ + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1)) + ABORT(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + sect = clust2sect(fp->fs, fp->clust); /* Get current sector */ + if (!sect) ABORT(fp->fs, FR_INT_ERR); + sect += csect; + cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */ + if (cc) { /* Write maximum contiguous sectors directly */ + if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */ + cc = fp->fs->csize - csect; + if (disk_write(fp->fs->drv, wbuff, sect, cc)) + 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 = 0; + } +#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 */ + continue; + } +#if _FS_TINY + if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */ + if (sync_window(fp->fs)) 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 && + disk_read(fp->fs->drv, fp->buf, sect, 1)) + ABORT(fp->fs, FR_DISK_ERR); + } +#endif + fp->dsect = sect; + } + wcnt = SS(fp->fs) - ((UINT)fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */ + if (wcnt > btw) wcnt = btw; +#if _FS_TINY + if (move_window(fp->fs, fp->dsect)) /* Move sector window */ + ABORT(fp->fs, FR_DISK_ERR); + mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ + fp->fs->wflag = 1; +#else + mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */ + fp->flag |= FA__DIRTY; +#endif + } + + if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */ + fp->flag |= FA__WRITTEN; /* Set file 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 *dir; + + + res = validate(fp); /* Check validity of the object */ + if (res == FR_OK) { + if (fp->flag & FA__WRITTEN) { /* Has the file been written? */ + /* Write-back dirty buffer */ +#if !_FS_TINY + if (fp->flag & FA__DIRTY) { + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1)) + LEAVE_FF(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + /* Update the directory entry */ + res = move_window(fp->fs, fp->dir_sect); + if (res == FR_OK) { + dir = fp->dir_ptr; + dir[DIR_Attr] |= AM_ARC; /* Set archive bit */ + ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */ + st_clust(dir, fp->sclust); /* Update start cluster */ + tm = get_fattime(); /* Update updated time */ + ST_DWORD(dir+DIR_WrtTime, tm); + ST_WORD(dir+DIR_LstAccDate, 0); + fp->flag &= ~FA__WRITTEN; + fp->fs->wflag = 1; + 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 = 0; /* 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; + + + 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 _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 (ofs > fp->fsize) /* Clip offset at the file size */ + ofs = fp->fsize; + fp->fptr = ofs; /* Set file pointer */ + if (ofs) { + fp->clust = clmt_clust(fp, ofs - 1); + dsc = clust2sect(fp->fs, fp->clust); + if (!dsc) ABORT(fp->fs, FR_INT_ERR); + dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1); + if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */ +#if !_FS_TINY +#if !_FS_READONLY + if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1)) + ABORT(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + if (disk_read(fp->fs->drv, fp->buf, dsc, 1)) /* Load current sector */ + ABORT(fp->fs, FR_DISK_ERR); +#endif + fp->dsect = dsc; + } + } + } + } else +#endif + + /* Normal Seek */ + { + DWORD clst, bcs, nsect, ifptr; + + if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */ +#if !_FS_READONLY + && !(fp->flag & FA_WRITE) +#endif + ) ofs = fp->fsize; + + ifptr = fp->fptr; + fp->fptr = nsect = 0; + if (ofs) { + bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */ + if (ifptr > 0 && + (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */ + fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */ + ofs -= fp->fptr; + clst = fp->clust; + } else { /* When seek to back cluster, */ + clst = fp->sclust; /* start from the first cluster */ +#if !_FS_READONLY + if (clst == 0) { /* If no cluster chain, create a new chain */ + clst = create_chain(fp->fs, 0); + if (clst == 1) ABORT(fp->fs, FR_INT_ERR); + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + fp->sclust = clst; + } +#endif + fp->clust = clst; + } + if (clst != 0) { + while (ofs > bcs) { /* Cluster following loop */ +#if !_FS_READONLY + if (fp->flag & FA_WRITE) { /* Check if in write mode or not */ + clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */ + if (clst == 0) { /* When disk gets full, clip file size */ + ofs = bcs; break; + } + } else +#endif + clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */ + if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR); + if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR); + fp->clust = clst; + fp->fptr += bcs; + ofs -= bcs; + } + fp->fptr += ofs; + if (ofs % SS(fp->fs)) { + nsect = clust2sect(fp->fs, clst); /* Current sector */ + if (!nsect) ABORT(fp->fs, FR_INT_ERR); + nsect += ofs / SS(fp->fs); + } + } + } + if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */ +#if !_FS_TINY +#if !_FS_READONLY + if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */ + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1)) + ABORT(fp->fs, FR_DISK_ERR); + fp->flag &= ~FA__DIRTY; + } +#endif + if (disk_read(fp->fs->drv, fp->buf, nsect, 1)) /* 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) return FR_INVALID_OBJECT; + + /* Get logical drive number */ + res = find_volume(&fs, &path, 0); + 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) { /* It is not the origin directory itself */ + if (dp->dir[DIR_Attr] & AM_DIR) /* 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, 0); /* 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 = 0; /* 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 = 0; /* 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) { + res = dir_sdi(dp, 0); /* 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 = 0; + 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 = 0; + 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; + 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 file path */ + if (res == FR_OK) { /* Follow completed */ + if (dj.dir) { /* Found an object */ + if (fno) 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** fatfs /* 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(fatfs, &path, 0); + fs = *fatfs; + 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 = 0; + if (fat == FS_FAT12) { + clst = 2; + do { + stat = get_fat(fs, clst); + if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } + if (stat == 1) { res = FR_INT_ERR; break; } + if (stat == 0) n++; + } while (++clst < fs->n_fatent); + } else { + clst = fs->n_fatent; + sect = fs->fatbase; + i = 0; p = 0; + do { + if (!i) { + res = move_window(fs, sect++); + if (res != FR_OK) break; + p = fs->win; + i = SS(fs); + } + if (fat == FS_FAT16) { + if (LD_WORD(p) == 0) n++; + p += 2; i -= 2; + } else { + if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++; + p += 4; i -= 4; + } + } while (--clst); + } + fs->free_clust = n; + fs->fsi_flag |= 1; + *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) { /* Check error */ + res = (FRESULT)fp->err; + } else { + if (!(fp->flag & FA_WRITE)) /* 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 == 0) { /* When set file size to zero, remove entire cluster chain */ + res = remove_chain(fp->fs, fp->sclust); + fp->sclust = 0; + } else { /* When truncate a part of the file, remove remaining clusters */ + ncl = get_fat(fp->fs, fp->clust); + res = FR_OK; + if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR; + if (ncl == 1) res = FR_INT_ERR; + if (res == FR_OK && ncl < fp->fs->n_fatent) { + res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF); + if (res == FR_OK) res = remove_chain(fp->fs, ncl); + } + } +#if !_FS_TINY + if (res == FR_OK && (fp->flag & FA__DIRTY)) { + if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1)) + 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, sdj; + BYTE *dir; + DWORD dclst; + DEF_NAMEBUF; + + + /* Get logical drive number */ + res = find_volume(&dj.fs, &path, 1); + 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)) + 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) { + res = FR_INVALID_NAME; /* Cannot remove the start directory */ + } else { + if (dir[DIR_Attr] & AM_RDO) + res = FR_DENIED; /* Cannot remove R/O object */ + } + dclst = ld_clust(dj.fs, dir); + if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */ + if (dclst < 2) { + res = FR_INT_ERR; + } else { + mem_cpy(&sdj, &dj, sizeof (DIR)); /* Check if the sub-directory is empty or not */ + sdj.sclust = dclst; + res = dir_sdi(&sdj, 2); /* 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) /* 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; + BYTE *dir, n; + DWORD dsc, dcl, pcl, tm = get_fattime(); + DEF_NAMEBUF; + + + /* Get logical drive number */ + res = find_volume(&dj.fs, &path, 1); + 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)) + res = FR_INVALID_NAME; + if (res == FR_NO_FILE) { /* Can create a new directory */ + dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */ + res = FR_OK; + if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */ + if (dcl == 1) res = FR_INT_ERR; + if (dcl == 0xFFFFFFFF) 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+DIR_Name, ' ', 11); /* Create "." entry */ + dir[DIR_Name] = '.'; + 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+1] = '.'; pcl = dj.sclust; + if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase) + pcl = 0; + st_clust(dir+SZ_DIR, pcl); + for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */ + dj.fs->winsect = dsc++; + dj.fs->wflag = 1; + 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) { + 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 = 1; + 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; + BYTE *dir; + DEF_NAMEBUF; + + + /* Get logical drive number */ + res = find_volume(&dj.fs, &path, 1); + 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)) + res = FR_INVALID_NAME; + if (res == FR_OK) { + dir = dj.dir; + if (!dir) { /* Is it a root directory? */ + res = FR_INVALID_NAME; + } else { /* File or sub directory */ + mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ + dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */ + dj.fs->wflag = 1; + res = sync_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; + BYTE *dir; + DEF_NAMEBUF; + + + /* Get logical drive number */ + res = find_volume(&dj.fs, &path, 1); + 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)) + res = FR_INVALID_NAME; + if (res == FR_OK) { + dir = dj.dir; + if (!dir) { /* Root directory */ + res = FR_INVALID_NAME; + } else { /* File or sub-directory */ + ST_WORD(dir+DIR_WrtTime, fno->ftime); + ST_WORD(dir+DIR_WrtDate, fno->fdate); + dj.fs->wflag = 1; + res = sync_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, djn; + BYTE buf[21], *dir; + DWORD dw; + DEF_NAMEBUF; + + + /* Get logical drive number of the source object */ + res = find_volume(&djo.fs, &path_old, 1); + 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)) + 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) { /* Is root dir? */ + res = FR_NO_FILE; + } else { + mem_cpy(buf, djo.dir+DIR_Attr, 21); /* 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, 19); + dir[DIR_Attr] = buf[0] | AM_ARC; + djo.fs->wflag = 1; + if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */ + dw = clust2sect(djo.fs, ld_clust(djo.fs, dir)); + if (!dw) { + res = FR_INT_ERR; + } else { + res = move_window(djo.fs, dw); + dir = djo.fs->win+SZ_DIR; /* .. entry */ + if (res == FR_OK && dir[1] == '.') { + dw = (djo.fs->fs_type == FS_FAT32 && djn.sclust == djo.fs->dirbase) ? 0 : djn.sclust; + st_clust(dir, dw); + djo.fs->wflag = 1; + } + } + } + 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) 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 && w >= 0x80) 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)) /* 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) 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) 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) 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)) return FR_DISK_ERR; + if (LD_WORD(fs->win+BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; + tbl = &fs->win[MBR_Table + (part - 1) * SZ_PTE]; + if (!tbl[4]) return FR_MKFS_ABORTED; /* No partition? */ + b_vol = LD_DWORD(tbl+8); /* Volume start sector */ + n_vol = LD_DWORD(tbl+12); /* Volume size */ + } else { + /* Create a partition in this function */ + if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128) + return FR_DISK_ERR; + b_vol = (sfd) ? 0 : 63; /* Volume start sector */ + n_vol -= b_vol; /* Volume size */ + } + + if (!au) { /* AU auto selection */ + vs = n_vol / (2000 / (SS(fs) / 512)); + for (i = 0; vs < vst[i]; i++) ; + au = cst[i]; + } + 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)) /* 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)) /* 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)) /* 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)) + 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)) + return FR_DISK_ERR; + } + } + + /* Initialize root directory */ + i = (fmt == FS_FAT32) ? au : (UINT)n_dir; + do { + if (disk_write(pdrv, tbl, wsect++, 1)) + 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, 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 */ + int len, /* Size of string buffer (characters) */ + FIL* fp /* Pointer to the file object */ +) +{ + int 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) 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 <stdarg.h> +/*-----------------------------------------------------------------------*/ +/* Put a character to the file */ +/*-----------------------------------------------------------------------*/ + +typedef struct { + FIL* fp; + int idx, nchr; + BYTE buf[64]; +} putbuff; + + +static +void putc_bfd ( + putbuff* pb, + TCHAR c +) +{ + UINT bw; + int 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) 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) 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) && j++ < w) 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 */ |