You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
6140 lines
207 KiB
6140 lines
207 KiB
/*----------------------------------------------------------------------------/ |
|
/ FatFs - Generic FAT file system module R0.12c / |
|
/-----------------------------------------------------------------------------/ |
|
/ |
|
/ Copyright (C) 2017, ChaN, all right reserved. |
|
/ |
|
/ FatFs module is an open source software. Redistribution and use of FatFs in |
|
/ source and binary forms, with or without modification, are permitted provided |
|
/ that the following condition is met: |
|
/ |
|
/ 1. Redistributions of source code must retain the above copyright notice, |
|
/ this condition and the following disclaimer. |
|
/ |
|
/ This software is provided by the copyright holder and contributors "AS IS" |
|
/ and any warranties related to this software are DISCLAIMED. |
|
/ The copyright owner or contributors be NOT LIABLE for any damages caused |
|
/ by use of this software. |
|
/----------------------------------------------------------------------------*/ |
|
|
|
|
|
#include "ff.h" /* Declarations of FatFs API */ |
|
#include "diskio.h" /* Declarations of device I/O functions */ |
|
|
|
|
|
/*-------------------------------------------------------------------------- |
|
|
|
Module Private Definitions |
|
|
|
---------------------------------------------------------------------------*/ |
|
|
|
#if _FATFS != 68300 /* Revision ID */ |
|
#error Wrong include file (ff.h). |
|
#endif |
|
|
|
|
|
/* DBCS code ranges and SBCS upper conversion tables */ |
|
|
|
#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. */ |
|
#define _DF1S 0 |
|
#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,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,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 == 720 /* Arabic */ |
|
#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 == 737 /* Greek */ |
|
#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,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \ |
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} |
|
|
|
#elif _CODE_PAGE == 771 /* KBL */ |
|
#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,0xDC,0xDE,0xDE, \ |
|
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ |
|
0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF} |
|
|
|
#elif _CODE_PAGE == 775 /* Baltic */ |
|
#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 /* Latin 1 */ |
|
#define _DF1S 0 |
|
#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \ |
|
0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \ |
|
0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \ |
|
0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ |
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ |
|
0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \ |
|
0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \ |
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} |
|
|
|
#elif _CODE_PAGE == 852 /* Latin 2 */ |
|
#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,0xAC, \ |
|
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 */ |
|
#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 */ |
|
#define _DF1S 0 |
|
#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,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,0xAD,0xAE,0xAF, \ |
|
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ |
|
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \ |
|
0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ |
|
0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \ |
|
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} |
|
|
|
#elif _CODE_PAGE == 860 /* Portuguese */ |
|
#define _DF1S 0 |
|
#define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \ |
|
0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ |
|
0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,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 == 861 /* Icelandic */ |
|
#define _DF1S 0 |
|
#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \ |
|
0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ |
|
0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,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 == 862 /* Hebrew */ |
|
#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,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 == 863 /* Canadian-French */ |
|
#define _DF1S 0 |
|
#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \ |
|
0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \ |
|
0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,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 == 864 /* Arabic */ |
|
#define _DF1S 0 |
|
#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,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,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 == 865 /* Nordic */ |
|
#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,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 == 866 /* Russian */ |
|
#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, \ |
|
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ |
|
0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} |
|
|
|
#elif _CODE_PAGE == 869 /* Greek 2 */ |
|
#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,0x86,0x9C,0x8D,0x8F,0x90, \ |
|
0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,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, \ |
|
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \ |
|
0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \ |
|
0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF} |
|
|
|
#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */ |
|
#if _USE_LFN != 0 |
|
#error Cannot enable LFN 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 != 0 /* 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 */ |
|
|
|
|
|
/* Additional file attribute bits for internal use */ |
|
#define AM_VOL 0x08 /* Volume label */ |
|
#define AM_LFN 0x0F /* LFN entry */ |
|
#define AM_MASK 0x3F /* Mask of defined bits */ |
|
|
|
|
|
/* Additional file access control and file status flags for internal use */ |
|
#define FA_SEEKEND 0x20 /* Seek to end of the file on file open */ |
|
#define FA_MODIFIED 0x40 /* File has been modified */ |
|
#define FA_DIRTY 0x80 /* FIL.buf[] needs to be written-back */ |
|
|
|
|
|
/* Name status flags in fn[] */ |
|
#define NSFLAG 11 /* Index of the name status byte */ |
|
#define NS_LOSS 0x01 /* Out of 8.3 format */ |
|
#define NS_LFN 0x02 /* Force to create LFN entry */ |
|
#define NS_LAST 0x04 /* Last segment */ |
|
#define NS_BODY 0x08 /* Lower case flag (body) */ |
|
#define NS_EXT 0x10 /* Lower case flag (ext) */ |
|
#define NS_DOT 0x20 /* Dot entry */ |
|
#define NS_NOLFN 0x40 /* Do not find LFN */ |
|
#define NS_NONAME 0x80 /* Not followed */ |
|
|
|
|
|
/* Limits and boundaries */ |
|
#define MAX_DIR 0x200000 /* Max size of FAT directory */ |
|
#define MAX_DIR_EX 0x10000000 /* Max size of exFAT directory */ |
|
#define MAX_FAT12 0xFF5 /* Max FAT12 clusters (differs from specs, but correct for real DOS/Windows behavior) */ |
|
#define MAX_FAT16 0xFFF5 /* Max FAT16 clusters (differs from specs, but correct for real DOS/Windows behavior) */ |
|
#define MAX_FAT32 0x0FFFFFF5 /* Max FAT32 clusters (not specified, practical limit) */ |
|
#define MAX_EXFAT 0x7FFFFFFD /* Max exFAT clusters (differs from specs, implementation limit) */ |
|
|
|
|
|
/* FatFs refers the FAT structure as simple byte array instead of structure member |
|
/ because the C structure is not binary compatible between different platforms */ |
|
|
|
#define BS_JmpBoot 0 /* x86 jump instruction (3-byte) */ |
|
#define BS_OEMName 3 /* OEM name (8-byte) */ |
|
#define BPB_BytsPerSec 11 /* Sector size [byte] (WORD) */ |
|
#define BPB_SecPerClus 13 /* Cluster size [sector] (BYTE) */ |
|
#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (WORD) */ |
|
#define BPB_NumFATs 16 /* Number of FATs (BYTE) */ |
|
#define BPB_RootEntCnt 17 /* Size of root directory area for FAT12/16 [entry] (WORD) */ |
|
#define BPB_TotSec16 19 /* Volume size (16-bit) [sector] (WORD) */ |
|
#define BPB_Media 21 /* Media descriptor byte (BYTE) */ |
|
#define BPB_FATSz16 22 /* FAT size (16-bit) [sector] (WORD) */ |
|
#define BPB_SecPerTrk 24 /* Track size for int13h [sector] (WORD) */ |
|
#define BPB_NumHeads 26 /* Number of heads for int13h (WORD) */ |
|
#define BPB_HiddSec 28 /* Volume offset from top of the drive (DWORD) */ |
|
#define BPB_TotSec32 32 /* Volume size (32-bit) [sector] (DWORD) */ |
|
#define BS_DrvNum 36 /* Physical drive number for int13h (BYTE) */ |
|
#define BS_NTres 37 /* Error flag (BYTE) */ |
|
#define BS_BootSig 38 /* Extended boot signature (BYTE) */ |
|
#define BS_VolID 39 /* Volume serial number (DWORD) */ |
|
#define BS_VolLab 43 /* Volume label string (8-byte) */ |
|
#define BS_FilSysType 54 /* File system type string (8-byte) */ |
|
#define BS_BootCode 62 /* Boot code (448-byte) */ |
|
#define BS_55AA 510 /* Signature word (WORD) */ |
|
|
|
#define BPB_FATSz32 36 /* FAT32: FAT size [sector] (DWORD) */ |
|
#define BPB_ExtFlags32 40 /* FAT32: Extended flags (WORD) */ |
|
#define BPB_FSVer32 42 /* FAT32: File system version (WORD) */ |
|
#define BPB_RootClus32 44 /* FAT32: Root directory cluster (DWORD) */ |
|
#define BPB_FSInfo32 48 /* FAT32: Offset of FSINFO sector (WORD) */ |
|
#define BPB_BkBootSec32 50 /* FAT32: Offset of backup boot sector (WORD) */ |
|
#define BS_DrvNum32 64 /* FAT32: Physical drive number for int13h (BYTE) */ |
|
#define BS_NTres32 65 /* FAT32: Error flag (BYTE) */ |
|
#define BS_BootSig32 66 /* FAT32: Extended boot signature (BYTE) */ |
|
#define BS_VolID32 67 /* FAT32: Volume serial number (DWORD) */ |
|
#define BS_VolLab32 71 /* FAT32: Volume label string (8-byte) */ |
|
#define BS_FilSysType32 82 /* FAT32: File system type string (8-byte) */ |
|
#define BS_BootCode32 90 /* FAT32: Boot code (420-byte) */ |
|
|
|
#define BPB_ZeroedEx 11 /* exFAT: MBZ field (53-byte) */ |
|
#define BPB_VolOfsEx 64 /* exFAT: Volume offset from top of the drive [sector] (QWORD) */ |
|
#define BPB_TotSecEx 72 /* exFAT: Volume size [sector] (QWORD) */ |
|
#define BPB_FatOfsEx 80 /* exFAT: FAT offset from top of the volume [sector] (DWORD) */ |
|
#define BPB_FatSzEx 84 /* exFAT: FAT size [sector] (DWORD) */ |
|
#define BPB_DataOfsEx 88 /* exFAT: Data offset from top of the volume [sector] (DWORD) */ |
|
#define BPB_NumClusEx 92 /* exFAT: Number of clusters (DWORD) */ |
|
#define BPB_RootClusEx 96 /* exFAT: Root directory start cluster (DWORD) */ |
|
#define BPB_VolIDEx 100 /* exFAT: Volume serial number (DWORD) */ |
|
#define BPB_FSVerEx 104 /* exFAT: File system version (WORD) */ |
|
#define BPB_VolFlagEx 106 /* exFAT: Volume flags (BYTE) */ |
|
#define BPB_ActFatEx 107 /* exFAT: Active FAT flags (BYTE) */ |
|
#define BPB_BytsPerSecEx 108 /* exFAT: Log2 of sector size in unit of byte (BYTE) */ |
|
#define BPB_SecPerClusEx 109 /* exFAT: Log2 of cluster size in unit of sector (BYTE) */ |
|
#define BPB_NumFATsEx 110 /* exFAT: Number of FATs (BYTE) */ |
|
#define BPB_DrvNumEx 111 /* exFAT: Physical drive number for int13h (BYTE) */ |
|
#define BPB_PercInUseEx 112 /* exFAT: Percent in use (BYTE) */ |
|
#define BPB_RsvdEx 113 /* exFAT: Reserved (7-byte) */ |
|
#define BS_BootCodeEx 120 /* exFAT: Boot code (390-byte) */ |
|
|
|
#define DIR_Name 0 /* Short file name (11-byte) */ |
|
#define DIR_Attr 11 /* Attribute (BYTE) */ |
|
#define DIR_NTres 12 /* Lower case flag (BYTE) */ |
|
#define DIR_CrtTime10 13 /* Created time sub-second (BYTE) */ |
|
#define DIR_CrtTime 14 /* Created time (DWORD) */ |
|
#define DIR_LstAccDate 18 /* Last accessed date (WORD) */ |
|
#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (WORD) */ |
|
#define DIR_ModTime 22 /* Modified time (DWORD) */ |
|
#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (WORD) */ |
|
#define DIR_FileSize 28 /* File size (DWORD) */ |
|
#define LDIR_Ord 0 /* LFN: LFN order and LLE flag (BYTE) */ |
|
#define LDIR_Attr 11 /* LFN: LFN attribute (BYTE) */ |
|
#define LDIR_Type 12 /* LFN: Entry type (BYTE) */ |
|
#define LDIR_Chksum 13 /* LFN: Checksum of the SFN (BYTE) */ |
|
#define LDIR_FstClusLO 26 /* LFN: MBZ field (WORD) */ |
|
#define XDIR_Type 0 /* exFAT: Type of exFAT directory entry (BYTE) */ |
|
#define XDIR_NumLabel 1 /* exFAT: Number of volume label characters (BYTE) */ |
|
#define XDIR_Label 2 /* exFAT: Volume label (11-WORD) */ |
|
#define XDIR_CaseSum 4 /* exFAT: Sum of case conversion table (DWORD) */ |
|
#define XDIR_NumSec 1 /* exFAT: Number of secondary entries (BYTE) */ |
|
#define XDIR_SetSum 2 /* exFAT: Sum of the set of directory entries (WORD) */ |
|
#define XDIR_Attr 4 /* exFAT: File attribute (WORD) */ |
|
#define XDIR_CrtTime 8 /* exFAT: Created time (DWORD) */ |
|
#define XDIR_ModTime 12 /* exFAT: Modified time (DWORD) */ |
|
#define XDIR_AccTime 16 /* exFAT: Last accessed time (DWORD) */ |
|
#define XDIR_CrtTime10 20 /* exFAT: Created time subsecond (BYTE) */ |
|
#define XDIR_ModTime10 21 /* exFAT: Modified time subsecond (BYTE) */ |
|
#define XDIR_CrtTZ 22 /* exFAT: Created timezone (BYTE) */ |
|
#define XDIR_ModTZ 23 /* exFAT: Modified timezone (BYTE) */ |
|
#define XDIR_AccTZ 24 /* exFAT: Last accessed timezone (BYTE) */ |
|
#define XDIR_GenFlags 33 /* exFAT: General secondary flags (WORD) */ |
|
#define XDIR_NumName 35 /* exFAT: Number of file name characters (BYTE) */ |
|
#define XDIR_NameHash 36 /* exFAT: Hash of file name (WORD) */ |
|
#define XDIR_ValidFileSize 40 /* exFAT: Valid file size (QWORD) */ |
|
#define XDIR_FstClus 52 /* exFAT: First cluster of the file data (DWORD) */ |
|
#define XDIR_FileSize 56 /* exFAT: File/Directory size (QWORD) */ |
|
|
|
#define SZDIRE 32 /* Size of a directory entry */ |
|
#define DDEM 0xE5 /* Deleted directory entry mark set to DIR_Name[0] */ |
|
#define RDDEM 0x05 /* Replacement of the character collides with DDEM */ |
|
#define LLEF 0x40 /* Last long entry flag in LDIR_Ord */ |
|
|
|
#define FSI_LeadSig 0 /* FAT32 FSI: Leading signature (DWORD) */ |
|
#define FSI_StrucSig 484 /* FAT32 FSI: Structure signature (DWORD) */ |
|
#define FSI_Free_Count 488 /* FAT32 FSI: Number of free clusters (DWORD) */ |
|
#define FSI_Nxt_Free 492 /* FAT32 FSI: Last allocated cluster (DWORD) */ |
|
|
|
#define MBR_Table 446 /* MBR: Offset of partition table in the MBR */ |
|
#define SZ_PTE 16 /* MBR: Size of a partition table entry */ |
|
#define PTE_Boot 0 /* MBR PTE: Boot indicator */ |
|
#define PTE_StHead 1 /* MBR PTE: Start head */ |
|
#define PTE_StSec 2 /* MBR PTE: Start sector */ |
|
#define PTE_StCyl 3 /* MBR PTE: Start cylinder */ |
|
#define PTE_System 4 /* MBR PTE: System ID */ |
|
#define PTE_EdHead 5 /* MBR PTE: End head */ |
|
#define PTE_EdSec 6 /* MBR PTE: End sector */ |
|
#define PTE_EdCyl 7 /* MBR PTE: End cylinder */ |
|
#define PTE_StLba 8 /* MBR PTE: Start in LBA */ |
|
#define PTE_SizLba 12 /* MBR PTE: Size in LBA */ |
|
|
|
|
|
/* Post process after fatal error on file operation */ |
|
#define ABORT(fs, res) { fp->err = (BYTE)(res); LEAVE_FF(fs, res); } |
|
|
|
|
|
/* 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 |
|
|
|
|
|
/* Definitions of volume - partition conversion */ |
|
#if _MULTI_PARTITION |
|
#define LD2PD(vol) VolToPart[vol].pd /* Get physical drive number */ |
|
#define LD2PT(vol) VolToPart[vol].pt /* Get partition index */ |
|
#else |
|
#define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */ |
|
#define LD2PT(vol) 0 /* Find first valid partition or in SFD */ |
|
#endif |
|
|
|
|
|
/* 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 |
|
|
|
|
|
/* Timestamp */ |
|
#if _FS_NORTC == 1 |
|
#if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31 |
|
#error Invalid _FS_NORTC settings |
|
#endif |
|
#define GET_FATTIME() ((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16) |
|
#else |
|
#define GET_FATTIME() get_fattime() |
|
#endif |
|
|
|
|
|
/* File lock controls */ |
|
#if _FS_LOCK != 0 |
|
#if _FS_READONLY |
|
#error _FS_LOCK must be 0 at read-only configuration |
|
#endif |
|
typedef struct { |
|
FATFS *fs; /* Object ID 1, volume (NULL:blank entry) */ |
|
DWORD clu; /* Object ID 2, containing directory (0:root) */ |
|
DWORD ofs; /* Object ID 3, offset in the directory */ |
|
WORD ctr; /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */ |
|
} FILESEM; |
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
/*-------------------------------------------------------------------------- |
|
|
|
Module Private Work Area |
|
|
|
---------------------------------------------------------------------------*/ |
|
|
|
/* Remark: Variables defined here without initial value shall be guaranteed |
|
/ zero/null at start-up. If not, the linker option or start-up routine is |
|
/ not compliance with C standard. */ |
|
|
|
#if _VOLUMES < 1 || _VOLUMES > 10 |
|
#error Wrong _VOLUMES setting |
|
#endif |
|
static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */ |
|
static WORD Fsid; /* File system mount ID */ |
|
|
|
#if _FS_RPATH != 0 && _VOLUMES >= 2 |
|
static BYTE CurrVol; /* Current drive */ |
|
#endif |
|
|
|
#if _FS_LOCK != 0 |
|
static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */ |
|
#endif |
|
|
|
#if _USE_LFN == 0 /* Non-LFN configuration */ |
|
#define DEF_NAMBUF |
|
#define INIT_NAMBUF(fs) |
|
#define FREE_NAMBUF() |
|
|
|
#else /* LFN configuration */ |
|
#if _MAX_LFN < 12 || _MAX_LFN > 255 |
|
#error Wrong _MAX_LFN value |
|
#endif |
|
#define MAXDIRB(nc) ((nc + 44U) / 15 * SZDIRE) |
|
|
|
#if _USE_LFN == 1 /* LFN enabled with static working buffer */ |
|
#if _FS_EXFAT |
|
static BYTE DirBuf[MAXDIRB(_MAX_LFN)]; /* Directory entry block scratchpad buffer */ |
|
#endif |
|
static WCHAR LfnBuf[_MAX_LFN + 1]; /* LFN enabled with static working buffer */ |
|
#define DEF_NAMBUF |
|
#define INIT_NAMBUF(fs) |
|
#define FREE_NAMBUF() |
|
|
|
#elif _USE_LFN == 2 /* LFN enabled with dynamic working buffer on the stack */ |
|
#if _FS_EXFAT |
|
#define DEF_NAMBUF WCHAR lbuf[_MAX_LFN+1]; BYTE dbuf[MAXDIRB(_MAX_LFN)]; |
|
#define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; (fs)->dirbuf = dbuf; } |
|
#define FREE_NAMBUF() |
|
#else |
|
#define DEF_NAMBUF WCHAR lbuf[_MAX_LFN+1]; |
|
#define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; } |
|
#define FREE_NAMBUF() |
|
#endif |
|
|
|
#elif _USE_LFN == 3 /* LFN enabled with dynamic working buffer on the heap */ |
|
#if _FS_EXFAT |
|
#define DEF_NAMBUF WCHAR *lfn; |
|
#define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2 + MAXDIRB(_MAX_LFN)); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; (fs)->dirbuf = (BYTE*)(lfn+_MAX_LFN+1); } |
|
#define FREE_NAMBUF() ff_memfree(lfn) |
|
#else |
|
#define DEF_NAMBUF WCHAR *lfn; |
|
#define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; } |
|
#define FREE_NAMBUF() ff_memfree(lfn) |
|
#endif |
|
|
|
#else |
|
#error Wrong _USE_LFN setting |
|
|
|
#endif |
|
#endif /* else _USE_LFN == 0 */ |
|
|
|
#ifdef _EXCVT |
|
static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for SBCS extended characters */ |
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
|
|
/*-------------------------------------------------------------------------- |
|
|
|
Module Private Functions |
|
|
|
---------------------------------------------------------------------------*/ |
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Load/Store multi-byte word in the FAT structure */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
WORD ld_word (const BYTE* ptr) /* Load a 2-byte little-endian word */ |
|
{ |
|
WORD rv; |
|
|
|
rv = ptr[1]; |
|
rv = rv << 8 | ptr[0]; |
|
return rv; |
|
} |
|
|
|
static |
|
DWORD ld_dword (const BYTE* ptr) /* Load a 4-byte little-endian word */ |
|
{ |
|
DWORD rv; |
|
|
|
rv = ptr[3]; |
|
rv = rv << 8 | ptr[2]; |
|
rv = rv << 8 | ptr[1]; |
|
rv = rv << 8 | ptr[0]; |
|
return rv; |
|
} |
|
|
|
#if _FS_EXFAT |
|
static |
|
QWORD ld_qword (const BYTE* ptr) /* Load an 8-byte little-endian word */ |
|
{ |
|
QWORD rv; |
|
|
|
rv = ptr[7]; |
|
rv = rv << 8 | ptr[6]; |
|
rv = rv << 8 | ptr[5]; |
|
rv = rv << 8 | ptr[4]; |
|
rv = rv << 8 | ptr[3]; |
|
rv = rv << 8 | ptr[2]; |
|
rv = rv << 8 | ptr[1]; |
|
rv = rv << 8 | ptr[0]; |
|
return rv; |
|
} |
|
#endif |
|
|
|
#if !_FS_READONLY |
|
static |
|
void st_word (BYTE* ptr, WORD val) /* Store a 2-byte word in little-endian */ |
|
{ |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; |
|
} |
|
|
|
static |
|
void st_dword (BYTE* ptr, DWORD val) /* Store a 4-byte word in little-endian */ |
|
{ |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; |
|
} |
|
|
|
#if _FS_EXFAT |
|
static |
|
void st_qword (BYTE* ptr, QWORD val) /* Store an 8-byte word in little-endian */ |
|
{ |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; val >>= 8; |
|
*ptr++ = (BYTE)val; |
|
} |
|
#endif |
|
#endif /* !_FS_READONLY */ |
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* 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 (cnt) { |
|
do { |
|
*d++ = *s++; |
|
} while (--cnt); |
|
} |
|
} |
|
|
|
/* Fill memory block */ |
|
static |
|
void mem_set (void* dst, int val, UINT cnt) { |
|
BYTE *d = (BYTE*)dst; |
|
|
|
do { |
|
*d++ = (BYTE)val; |
|
} while (--cnt); |
|
} |
|
|
|
/* Compare memory block */ |
|
static |
|
int mem_cmp (const void* dst, const void* src, UINT cnt) { /* ZR:same, NZ:different */ |
|
const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src; |
|
int r = 0; |
|
|
|
do { |
|
r = *d++ - *s++; |
|
} while (--cnt && r == 0); |
|
|
|
return r; |
|
} |
|
|
|
/* Check if chr is contained in the string */ |
|
static |
|
int chk_chr (const char* str, int chr) { /* NZ:contained, ZR:not contained */ |
|
while (*str && *str != chr) str++; |
|
return *str; |
|
} |
|
|
|
|
|
|
|
|
|
#if _FS_REENTRANT |
|
/*-----------------------------------------------------------------------*/ |
|
/* Request/Release grant to access the volume */ |
|
/*-----------------------------------------------------------------------*/ |
|
static |
|
int lock_fs ( |
|
FATFS* fs /* File system object */ |
|
) |
|
{ |
|
return (fs && ff_req_grant(fs->sobj)) ? 1 : 0; |
|
} |
|
|
|
|
|
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_TIMEOUT) { |
|
ff_rel_grant(fs->sobj); |
|
} |
|
} |
|
|
|
#endif |
|
|
|
|
|
|
|
#if _FS_LOCK != 0 |
|
/*-----------------------------------------------------------------------*/ |
|
/* File lock control functions */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
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->obj.fs && /* Check if the object matched with an open object */ |
|
Files[i].clu == dp->obj.sclust && |
|
Files[i].ofs == dp->dptr) 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->obj.fs && |
|
Files[i].clu == dp->obj.sclust && |
|
Files[i].ofs == dp->dptr) 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->obj.fs; |
|
Files[i].clu = dp->obj.sclust; |
|
Files[i].ofs = dp->dptr; |
|
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 > 0) n--; /* Decrement read mode open count */ |
|
Files[i].ctr = n; |
|
if (n == 0) 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 /* _FS_LOCK != 0 */ |
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Move/Flush disk access window in the file system object */ |
|
/*-----------------------------------------------------------------------*/ |
|
#if !_FS_READONLY |
|
static |
|
FRESULT sync_window ( /* Returns FR_OK or FR_DISK_ERROR */ |
|
FATFS* fs /* File system object */ |
|
) |
|
{ |
|
DWORD wsect; |
|
UINT nf; |
|
FRESULT res = FR_OK; |
|
|
|
|
|
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) != RES_OK) { |
|
res = FR_DISK_ERR; |
|
} else { |
|
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 res; |
|
} |
|
#endif |
|
|
|
|
|
static |
|
FRESULT move_window ( /* Returns FR_OK or FR_DISK_ERROR */ |
|
FATFS* fs, /* File system object */ |
|
DWORD sector /* Sector number to make appearance in the fs->win[] */ |
|
) |
|
{ |
|
FRESULT res = FR_OK; |
|
|
|
|
|
if (sector != fs->winsect) { /* Window offset changed? */ |
|
#if !_FS_READONLY |
|
res = sync_window(fs); /* Write-back changes */ |
|
#endif |
|
if (res == FR_OK) { /* Fill sector window with new data */ |
|
if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) { |
|
sector = 0xFFFFFFFF; /* Invalidate window if data is not reliable */ |
|
res = FR_DISK_ERR; |
|
} |
|
fs->winsect = sector; |
|
} |
|
} |
|
return res; |
|
} |
|
|
|
|
|
|
|
|
|
#if !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* Synchronize file system and strage device */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT sync_fs ( /* FR_OK:succeeded, !=0:error */ |
|
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_clst); |
|
st_dword(fs->win + FSI_Nxt_Free, fs->last_clst); |
|
/* 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# */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
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 */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */ |
|
_FDID* obj, /* Corresponding object */ |
|
DWORD clst /* Cluster number to get the value */ |
|
) |
|
{ |
|
UINT wc, bc; |
|
DWORD val; |
|
FATFS *fs = obj->fs; |
|
|
|
|
|
if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */ |
|
val = 1; /* Internal error */ |
|
|
|
} else { |
|
val = 0xFFFFFFFF; /* Default value falls on disk error */ |
|
|
|
switch (fs->fs_type) { |
|
case FS_FAT12 : |
|
bc = (UINT)clst; bc += bc / 2; |
|
if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break; |
|
wc = fs->win[bc++ % SS(fs)]; |
|
if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break; |
|
wc |= fs->win[bc % SS(fs)] << 8; |
|
val = (clst & 1) ? (wc >> 4) : (wc & 0xFFF); |
|
break; |
|
|
|
case FS_FAT16 : |
|
if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break; |
|
val = ld_word(fs->win + clst * 2 % SS(fs)); |
|
break; |
|
|
|
case FS_FAT32 : |
|
if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break; |
|
val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF; |
|
break; |
|
#if _FS_EXFAT |
|
case FS_EXFAT : |
|
if (obj->objsize) { |
|
DWORD cofs = clst - obj->sclust; /* Offset from start cluster */ |
|
DWORD clen = (DWORD)((obj->objsize - 1) / SS(fs)) / fs->csize; /* Number of clusters - 1 */ |
|
|
|
if (obj->stat == 2) { /* Is there no valid chain on the FAT? */ |
|
if (cofs <= clen) { |
|
val = (cofs == clen) ? 0x7FFFFFFF : clst + 1; /* Generate the value */ |
|
break; |
|
} |
|
} |
|
if (obj->stat == 3 && cofs < obj->n_cont) { /* Is it in the 1st fragment? */ |
|
val = clst + 1; /* Generate the value */ |
|
break; |
|
} |
|
if (obj->stat != 2) { /* Get value from FAT if FAT chain is valid */ |
|
if (obj->n_frag != 0) { /* Is it on the growing edge? */ |
|
val = 0x7FFFFFFF; /* Generate EOC */ |
|
} else { |
|
if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break; |
|
val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF; |
|
} |
|
break; |
|
} |
|
} |
|
/* go to default */ |
|
#endif |
|
default: |
|
val = 1; /* Internal error */ |
|
} |
|
} |
|
|
|
return val; |
|
} |
|
|
|
|
|
|
|
|
|
#if !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* FAT access - Change value of a FAT entry */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT put_fat ( /* FR_OK(0):succeeded, !=0:error */ |
|
FATFS* fs, /* Corresponding file system object */ |
|
DWORD clst, /* FAT index number (cluster number) to be changed */ |
|
DWORD val /* New value to be set to the entry */ |
|
) |
|
{ |
|
UINT bc; |
|
BYTE *p; |
|
FRESULT res = FR_INT_ERR; |
|
|
|
if (clst >= 2 && clst < fs->n_fatent) { /* Check if in valid range */ |
|
switch (fs->fs_type) { |
|
case FS_FAT12 : /* Bitfield items */ |
|
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; |
|
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)); |
|
fs->wflag = 1; |
|
break; |
|
|
|
case FS_FAT16 : /* WORD aligned items */ |
|
res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))); |
|
if (res != FR_OK) break; |
|
st_word(fs->win + clst * 2 % SS(fs), (WORD)val); |
|
fs->wflag = 1; |
|
break; |
|
|
|
case FS_FAT32 : /* DWORD aligned items */ |
|
#if _FS_EXFAT |
|
case FS_EXFAT : |
|
#endif |
|
res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))); |
|
if (res != FR_OK) break; |
|
if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) { |
|
val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000); |
|
} |
|
st_dword(fs->win + clst * 4 % SS(fs), val); |
|
fs->wflag = 1; |
|
break; |
|
} |
|
} |
|
return res; |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
|
|
|
|
|
|
|
|
#if _FS_EXFAT && !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* exFAT: Accessing FAT and Allocation Bitmap */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
/*--------------------------------------*/ |
|
/* Find a contiguous free cluster block */ |
|
/*--------------------------------------*/ |
|
|
|
static |
|
DWORD find_bitmap ( /* 0:Not found, 2..:Cluster block found, 0xFFFFFFFF:Disk error */ |
|
FATFS* fs, /* File system object */ |
|
DWORD clst, /* Cluster number to scan from */ |
|
DWORD ncl /* Number of contiguous clusters to find (1..) */ |
|
) |
|
{ |
|
BYTE bm, bv; |
|
UINT i; |
|
DWORD val, scl, ctr; |
|
|
|
|
|
clst -= 2; /* The first bit in the bitmap corresponds to cluster #2 */ |
|
if (clst >= fs->n_fatent - 2) clst = 0; |
|
scl = val = clst; ctr = 0; |
|
for (;;) { |
|
if (move_window(fs, fs->database + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF; /* (assuming bitmap is located top of the cluster heap) */ |
|
i = val / 8 % SS(fs); bm = 1 << (val % 8); |
|
do { |
|
do { |
|
bv = fs->win[i] & bm; bm <<= 1; /* Get bit value */ |
|
if (++val >= fs->n_fatent - 2) { /* Next cluster (with wrap-around) */ |
|
val = 0; bm = 0; i = SS(fs); |
|
} |
|
if (!bv) { /* Is it a free cluster? */ |
|
if (++ctr == ncl) return scl + 2; /* Check if run length is sufficient for required */ |
|
} else { |
|
scl = val; ctr = 0; /* Encountered a cluster in-use, restart to scan */ |
|
} |
|
if (val == clst) return 0; /* All cluster scanned? */ |
|
} while (bm); |
|
bm = 1; |
|
} while (++i < SS(fs)); |
|
} |
|
} |
|
|
|
|
|
/*----------------------------------------*/ |
|
/* Set/Clear a block of allocation bitmap */ |
|
/*----------------------------------------*/ |
|
|
|
static |
|
FRESULT change_bitmap ( |
|
FATFS* fs, /* File system object */ |
|
DWORD clst, /* Cluster number to change from */ |
|
DWORD ncl, /* Number of clusters to be changed */ |
|
int bv /* bit value to be set (0 or 1) */ |
|
) |
|
{ |
|
BYTE bm; |
|
UINT i; |
|
DWORD sect; |
|
|
|
clst -= 2; /* The first bit corresponds to cluster #2 */ |
|
sect = fs->database + clst / 8 / SS(fs); /* Sector address (assuming bitmap is located top of the cluster heap) */ |
|
i = clst / 8 % SS(fs); /* Byte offset in the sector */ |
|
bm = 1 << (clst % 8); /* Bit mask in the byte */ |
|
for (;;) { |
|
if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR; |
|
do { |
|
do { |
|
if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR; /* Is the bit expected value? */ |
|
fs->win[i] ^= bm; /* Flip the bit */ |
|
fs->wflag = 1; |
|
if (--ncl == 0) return FR_OK; /* All bits processed? */ |
|
} while (bm <<= 1); /* Next bit */ |
|
bm = 1; |
|
} while (++i < SS(fs)); /* Next byte */ |
|
i = 0; |
|
} |
|
} |
|
|
|
|
|
/*---------------------------------------------*/ |
|
/* Fill the first fragment of the FAT chain */ |
|
/*---------------------------------------------*/ |
|
|
|
static |
|
FRESULT fill_first_frag ( |
|
_FDID* obj /* Pointer to the corresponding object */ |
|
) |
|
{ |
|
FRESULT res; |
|
DWORD cl, n; |
|
|
|
if (obj->stat == 3) { /* Has the object been changed 'fragmented'? */ |
|
for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) { /* Create cluster chain on the FAT */ |
|
res = put_fat(obj->fs, cl, cl + 1); |
|
if (res != FR_OK) return res; |
|
} |
|
obj->stat = 0; /* Change status 'FAT chain is valid' */ |
|
} |
|
return FR_OK; |
|
} |
|
|
|
|
|
/*---------------------------------------------*/ |
|
/* Fill the last fragment of the FAT chain */ |
|
/*---------------------------------------------*/ |
|
|
|
static |
|
FRESULT fill_last_frag ( |
|
_FDID* obj, /* Pointer to the corresponding object */ |
|
DWORD lcl, /* Last cluster of the fragment */ |
|
DWORD term /* Value to set the last FAT entry */ |
|
) |
|
{ |
|
FRESULT res; |
|
|
|
while (obj->n_frag > 0) { /* Create the last chain on the FAT */ |
|
res = put_fat(obj->fs, lcl - obj->n_frag + 1, (obj->n_frag > 1) ? lcl - obj->n_frag + 2 : term); |
|
if (res != FR_OK) return res; |
|
obj->n_frag--; |
|
} |
|
return FR_OK; |
|
} |
|
|
|
#endif /* _FS_EXFAT && !_FS_READONLY */ |
|
|
|
|
|
|
|
#if !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* FAT handling - Remove a cluster chain */ |
|
/*-----------------------------------------------------------------------*/ |
|
static |
|
FRESULT remove_chain ( /* FR_OK(0):succeeded, !=0:error */ |
|
_FDID* obj, /* Corresponding object */ |
|
DWORD clst, /* Cluster to remove a chain from */ |
|
DWORD pclst /* Previous cluster of clst (0:an entire chain) */ |
|
) |
|
{ |
|
FRESULT res = FR_OK; |
|
DWORD nxt; |
|
FATFS *fs = obj->fs; |
|
#if _FS_EXFAT || _USE_TRIM |
|
DWORD scl = clst, ecl = clst; |
|
#endif |
|
#if _USE_TRIM |
|
DWORD rt[2]; |
|
#endif |
|
|
|
if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Check if in valid range */ |
|
|
|
/* Mark the previous cluster 'EOC' on the FAT if it exists */ |
|
if (pclst && (!_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) { |
|
res = put_fat(fs, pclst, 0xFFFFFFFF); |
|
if (res != FR_OK) return res; |
|
} |
|
|
|
/* Remove the chain */ |
|
do { |
|
nxt = get_fat(obj, clst); /* Get cluster status */ |
|
if (nxt == 0) break; /* Empty cluster? */ |
|
if (nxt == 1) return FR_INT_ERR; /* Internal error? */ |
|
if (nxt == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error? */ |
|
if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) { |
|
res = put_fat(fs, clst, 0); /* Mark the cluster 'free' on the FAT */ |
|
if (res != FR_OK) return res; |
|
} |
|
if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */ |
|
fs->free_clst++; |
|
fs->fsi_flag |= 1; |
|
} |
|
#if _FS_EXFAT || _USE_TRIM |
|
if (ecl + 1 == nxt) { /* Is next cluster contiguous? */ |
|
ecl = nxt; |
|
} else { /* End of contiguous cluster block */ |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
res = change_bitmap(fs, scl, ecl - scl + 1, 0); /* Mark the cluster block 'free' on the bitmap */ |
|
if (res != FR_OK) return res; |
|
} |
|
#endif |
|
#if _USE_TRIM |
|
rt[0] = clust2sect(fs, scl); /* Start sector */ |
|
rt[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */ |
|
disk_ioctl(fs->drv, CTRL_TRIM, rt); /* Inform device the block can be erased */ |
|
#endif |
|
scl = ecl = nxt; |
|
} |
|
#endif |
|
clst = nxt; /* Next cluster */ |
|
} while (clst < fs->n_fatent); /* Repeat while not the last link */ |
|
|
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
if (pclst == 0) { /* Does the object have no chain? */ |
|
obj->stat = 0; /* Change the object status 'initial' */ |
|
} else { |
|
if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) { /* Did the chain get contiguous? */ |
|
obj->stat = 2; /* Change the object status 'contiguous' */ |
|
} |
|
} |
|
} |
|
#endif |
|
return FR_OK; |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* FAT handling - Stretch a chain or Create a new chain */ |
|
/*-----------------------------------------------------------------------*/ |
|
static |
|
DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */ |
|
_FDID* obj, /* Corresponding object */ |
|
DWORD clst /* Cluster# to stretch, 0:Create a new chain */ |
|
) |
|
{ |
|
DWORD cs, ncl, scl; |
|
FRESULT res; |
|
FATFS *fs = obj->fs; |
|
|
|
|
|
if (clst == 0) { /* Create a new chain */ |
|
scl = fs->last_clst; /* Get suggested cluster to start from */ |
|
if (scl == 0 || scl >= fs->n_fatent) scl = 1; |
|
} |
|
else { /* Stretch current chain */ |
|
cs = get_fat(obj, clst); /* Check the cluster status */ |
|
if (cs < 2) return 1; /* Invalid FAT 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; |
|
} |
|
|
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ |
|
ncl = find_bitmap(fs, scl, 1); /* Find a free cluster */ |
|
if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl; /* No free cluster or hard error? */ |
|
res = change_bitmap(fs, ncl, 1, 1); /* Mark the cluster 'in use' */ |
|
if (res == FR_INT_ERR) return 1; |
|
if (res == FR_DISK_ERR) return 0xFFFFFFFF; |
|
if (clst == 0) { /* Is it a new chain? */ |
|
obj->stat = 2; /* Set status 'contiguous' */ |
|
} else { /* It is a stretched chain */ |
|
if (obj->stat == 2 && ncl != scl + 1) { /* Is the chain got fragmented? */ |
|
obj->n_cont = scl - obj->sclust; /* Set size of the contiguous part */ |
|
obj->stat = 3; /* Change status 'just fragmented' */ |
|
} |
|
} |
|
if (obj->stat != 2) { /* Is the file non-contiguous? */ |
|
if (ncl == clst + 1) { /* Is the cluster next to previous one? */ |
|
obj->n_frag = obj->n_frag ? obj->n_frag + 1 : 2; /* Increment size of last framgent */ |
|
} else { /* New fragment */ |
|
if (obj->n_frag == 0) obj->n_frag = 1; |
|
res = fill_last_frag(obj, clst, ncl); /* Fill last fragment on the FAT and link it to new one */ |
|
if (res == FR_OK) obj->n_frag = 1; |
|
} |
|
} |
|
} else |
|
#endif |
|
{ /* On the FAT12/16/32 volume */ |
|
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(obj, ncl); /* Get the cluster status */ |
|
if (cs == 0) break; /* Found a free cluster */ |
|
if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* An error occurred */ |
|
if (ncl == scl) return 0; /* No free cluster */ |
|
} |
|
res = put_fat(fs, ncl, 0xFFFFFFFF); /* Mark the new cluster 'EOC' */ |
|
if (res == FR_OK && clst != 0) { |
|
res = put_fat(fs, clst, ncl); /* Link it from the previous one if needed */ |
|
} |
|
} |
|
|
|
if (res == FR_OK) { /* Update FSINFO if function succeeded. */ |
|
fs->last_clst = ncl; |
|
if (fs->free_clst <= fs->n_fatent - 2) fs->free_clst--; |
|
fs->fsi_flag |= 1; |
|
} else { |
|
ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1; /* Failed. Generate error status */ |
|
} |
|
|
|
return ncl; /* Return new cluster number or error status */ |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
|
|
|
|
|
|
|
|
#if _USE_FASTSEEK |
|
/*-----------------------------------------------------------------------*/ |
|
/* FAT handling - Convert offset into cluster with link map table */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */ |
|
FIL* fp, /* Pointer to the file object */ |
|
FSIZE_t ofs /* File offset to be converted to cluster# */ |
|
) |
|
{ |
|
DWORD cl, ncl, *tbl; |
|
FATFS *fs = fp->obj.fs; |
|
|
|
|
|
tbl = fp->cltbl + 1; /* Top of CLMT */ |
|
cl = (DWORD)(ofs / SS(fs) / fs->csize); /* Cluster order from top of the file */ |
|
for (;;) { |
|
ncl = *tbl++; /* Number of cluters in the fragment */ |
|
if (ncl == 0) 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 ( /* FR_OK(0):succeeded, !=0:error */ |
|
DIR* dp, /* Pointer to directory object */ |
|
DWORD ofs /* Offset of directory table */ |
|
) |
|
{ |
|
DWORD csz, clst; |
|
FATFS *fs = dp->obj.fs; |
|
|
|
|
|
if (ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) { /* Check range of offset and alignment */ |
|
return FR_INT_ERR; |
|
} |
|
dp->dptr = ofs; /* Set current offset */ |
|
clst = dp->obj.sclust; /* Table start cluster (0:root) */ |
|
if (clst == 0 && fs->fs_type >= FS_FAT32) { /* Replace cluster# 0 with root cluster# */ |
|
clst = fs->dirbase; |
|
if (_FS_EXFAT) dp->obj.stat = 0; /* exFAT: Root dir has an FAT chain */ |
|
} |
|
|
|
if (clst == 0) { /* Static table (root-directory in FAT12/16) */ |
|
if (ofs / SZDIRE >= fs->n_rootdir) return FR_INT_ERR; /* Is index out of range? */ |
|
dp->sect = fs->dirbase; |
|
|
|
} else { /* Dynamic table (sub-directory or root-directory in FAT32+) */ |
|
csz = (DWORD)fs->csize * SS(fs); /* Bytes per cluster */ |
|
while (ofs >= csz) { /* Follow cluster chain */ |
|
clst = get_fat(&dp->obj, clst); /* Get next cluster */ |
|
if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ |
|
if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR; /* Reached to end of table or internal error */ |
|
ofs -= csz; |
|
} |
|
dp->sect = clust2sect(fs, clst); |
|
} |
|
dp->clust = clst; /* Current cluster# */ |
|
if (!dp->sect) return FR_INT_ERR; |
|
dp->sect += ofs / SS(fs); /* Sector# of the directory entry */ |
|
dp->dir = fs->win + (ofs % SS(fs)); /* Pointer to the entry in the win[] */ |
|
|
|
return FR_OK; |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Directory handling - Move directory table index next */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT dir_next ( /* FR_OK(0):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 ofs, clst; |
|
FATFS *fs = dp->obj.fs; |
|
#if !_FS_READONLY |
|
UINT n; |
|
#endif |
|
|
|
ofs = dp->dptr + SZDIRE; /* Next entry */ |
|
if (!dp->sect || ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) return FR_NO_FILE; /* Report EOT when offset has reached max value */ |
|
|
|
if (ofs % SS(fs) == 0) { /* Sector changed? */ |
|
dp->sect++; /* Next sector */ |
|
|
|
if (!dp->clust) { /* Static table */ |
|
if (ofs / SZDIRE >= fs->n_rootdir) { /* Report EOT if it reached end of static table */ |
|
dp->sect = 0; return FR_NO_FILE; |
|
} |
|
} |
|
else { /* Dynamic table */ |
|
if ((ofs / SS(fs) & (fs->csize - 1)) == 0) { /* Cluster changed? */ |
|
clst = get_fat(&dp->obj, dp->clust); /* Get next cluster */ |
|
if (clst <= 1) return FR_INT_ERR; /* Internal error */ |
|
if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ |
|
if (clst >= fs->n_fatent) { /* Reached end of dynamic table */ |
|
#if !_FS_READONLY |
|
if (!stretch) { /* If no stretch, report EOT */ |
|
dp->sect = 0; return FR_NO_FILE; |
|
} |
|
clst = create_chain(&dp->obj, dp->clust); /* Allocate a cluster */ |
|
if (clst == 0) return FR_DENIED; /* No free cluster */ |
|
if (clst == 1) return FR_INT_ERR; /* Internal error */ |
|
if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */ |
|
/* Clean-up the stretched table */ |
|
if (_FS_EXFAT) dp->obj.stat |= 4; /* The directory needs to be updated */ |
|
if (sync_window(fs) != FR_OK) return FR_DISK_ERR; /* Flush disk access window */ |
|
mem_set(fs->win, 0, SS(fs)); /* Clear window buffer */ |
|
for (n = 0, fs->winsect = clust2sect(fs, clst); n < fs->csize; n++, fs->winsect++) { /* Fill the new cluster with 0 */ |
|
fs->wflag = 1; |
|
if (sync_window(fs) != FR_OK) return FR_DISK_ERR; |
|
} |
|
fs->winsect -= n; /* Restore window offset */ |
|
#else |
|
if (!stretch) dp->sect = 0; /* (this line is to suppress compiler warning) */ |
|
dp->sect = 0; return FR_NO_FILE; /* Report EOT */ |
|
#endif |
|
} |
|
dp->clust = clst; /* Initialize data for new cluster */ |
|
dp->sect = clust2sect(fs, clst); |
|
} |
|
} |
|
} |
|
dp->dptr = ofs; /* Current entry */ |
|
dp->dir = fs->win + ofs % SS(fs); /* Pointer to the entry in the win[] */ |
|
|
|
return FR_OK; |
|
} |
|
|
|
|
|
|
|
|
|
#if !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* Directory handling - Reserve a block of directory entries */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */ |
|
DIR* dp, /* Pointer to the directory object */ |
|
UINT nent /* Number of contiguous entries to allocate */ |
|
) |
|
{ |
|
FRESULT res; |
|
UINT n; |
|
FATFS *fs = dp->obj.fs; |
|
|
|
|
|
res = dir_sdi(dp, 0); |
|
if (res == FR_OK) { |
|
n = 0; |
|
do { |
|
res = move_window(fs, dp->sect); |
|
if (res != FR_OK) break; |
|
#if _FS_EXFAT |
|
if ((fs->fs_type == FS_EXFAT) ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) { |
|
#else |
|
if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) { |
|
#endif |
|
if (++n == nent) break; /* A block of contiguous free entries is found */ |
|
} else { |
|
n = 0; /* Not a blank entry. Restart to search */ |
|
} |
|
res = dir_next(dp, 1); |
|
} while (res == FR_OK); /* Next entry with table stretch enabled */ |
|
} |
|
|
|
if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */ |
|
return res; |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* FAT: Directory handling - Load/Store start cluster number */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
DWORD ld_clust ( /* Returns the top cluster value of the SFN entry */ |
|
FATFS* fs, /* Pointer to the fs object */ |
|
const BYTE* dir /* Pointer to the key 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 ( |
|
FATFS* fs, /* Pointer to the fs object */ |
|
BYTE* dir, /* Pointer to the key entry */ |
|
DWORD cl /* Value to be set */ |
|
) |
|
{ |
|
st_word(dir + DIR_FstClusLO, (WORD)cl); |
|
if (fs->fs_type == FS_FAT32) { |
|
st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16)); |
|
} |
|
} |
|
#endif |
|
|
|
|
|
|
|
#if _USE_LFN != 0 |
|
/*------------------------------------------------------------------------*/ |
|
/* FAT-LFN: LFN handling */ |
|
/*------------------------------------------------------------------------*/ |
|
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 */ |
|
|
|
|
|
/*--------------------------------------------------------*/ |
|
/* FAT-LFN: Compare a part of file name with an LFN entry */ |
|
/*--------------------------------------------------------*/ |
|
static |
|
int cmp_lfn ( /* 1:matched, 0:not matched */ |
|
const WCHAR* lfnbuf, /* Pointer to the LFN working buffer to be compared */ |
|
BYTE* dir /* Pointer to the directory entry containing the part of LFN */ |
|
) |
|
{ |
|
UINT i, s; |
|
WCHAR wc, uc; |
|
|
|
|
|
if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO */ |
|
|
|
i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */ |
|
|
|
for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */ |
|
uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */ |
|
if (wc) { |
|
if (i >= _MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) { /* Compare it */ |
|
return 0; /* Not matched */ |
|
} |
|
wc = uc; |
|
} else { |
|
if (uc != 0xFFFF) return 0; /* Check filler */ |
|
} |
|
} |
|
|
|
if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) return 0; /* Last segment matched but different length */ |
|
|
|
return 1; /* The part of LFN matched */ |
|
} |
|
|
|
|
|
#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT |
|
/*-----------------------------------------------------*/ |
|
/* FAT-LFN: Pick a part of file name from an LFN entry */ |
|
/*-----------------------------------------------------*/ |
|
static |
|
int pick_lfn ( /* 1:succeeded, 0:buffer overflow or invalid LFN entry */ |
|
WCHAR* lfnbuf, /* Pointer to the LFN working buffer */ |
|
BYTE* dir /* Pointer to the LFN entry */ |
|
) |
|
{ |
|
UINT i, s; |
|
WCHAR wc, uc; |
|
|
|
|
|
if (ld_word(dir + LDIR_FstClusLO) != 0) return 0; /* Check LDIR_FstClusLO is 0 */ |
|
|
|
i = ((dir[LDIR_Ord] & ~LLEF) - 1) * 13; /* Offset in the LFN buffer */ |
|
|
|
for (wc = 1, s = 0; s < 13; s++) { /* Process all characters in the entry */ |
|
uc = ld_word(dir + LfnOfs[s]); /* Pick an LFN character */ |
|
if (wc) { |
|
if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ |
|
lfnbuf[i++] = wc = uc; /* Store it */ |
|
} else { |
|
if (uc != 0xFFFF) return 0; /* Check filler */ |
|
} |
|
} |
|
|
|
if (dir[LDIR_Ord] & LLEF) { /* Put terminator if it is the last LFN part */ |
|
if (i >= _MAX_LFN) return 0; /* Buffer overflow? */ |
|
lfnbuf[i] = 0; |
|
} |
|
|
|
return 1; /* The part of LFN is valid */ |
|
} |
|
#endif |
|
|
|
|
|
#if !_FS_READONLY |
|
/*-----------------------------------------*/ |
|
/* FAT-LFN: Create an entry of LFN entries */ |
|
/*-----------------------------------------*/ |
|
static |
|
void put_lfn ( |
|
const WCHAR* lfn, /* Pointer to the LFN */ |
|
BYTE* dir, /* Pointer to the LFN entry to be created */ |
|
BYTE ord, /* LFN order (1-20) */ |
|
BYTE sum /* Checksum of the corresponding SFN */ |
|
) |
|
{ |
|
UINT i, s; |
|
WCHAR wc; |
|
|
|
|
|
dir[LDIR_Chksum] = sum; /* Set checksum */ |
|
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 working buffer */ |
|
s = wc = 0; |
|
do { |
|
if (wc != 0xFFFF) wc = lfn[i++]; /* Get an effective character */ |
|
st_word(dir + LfnOfs[s], wc); /* Put it */ |
|
if (wc == 0) wc = 0xFFFF; /* Padding characters for left locations */ |
|
} while (++s < 13); |
|
if (wc == 0xFFFF || !lfn[i]) ord |= LLEF; /* Last LFN part is the start of LFN sequence */ |
|
dir[LDIR_Ord] = ord; /* Set the LFN order */ |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
#endif /* _USE_LFN != 0 */ |
|
|
|
|
|
|
|
#if _USE_LFN != 0 && !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* FAT-LFN: Create a Numbered SFN */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
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; |
|
WCHAR wc; |
|
DWORD sr; |
|
|
|
|
|
mem_cpy(dst, src, 11); |
|
|
|
if (seq > 5) { /* In case of many collisions, generate a hash number instead of sequential number */ |
|
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 = (BYTE)((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 /* _USE_LFN != 0 && !_FS_READONLY */ |
|
|
|
|
|
|
|
#if _USE_LFN != 0 |
|
/*-----------------------------------------------------------------------*/ |
|
/* FAT-LFN: Calculate checksum of an SFN entry */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
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 /* _USE_LFN != 0 */ |
|
|
|
|
|
|
|
#if _FS_EXFAT |
|
/*-----------------------------------------------------------------------*/ |
|
/* exFAT: Checksum */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
WORD xdir_sum ( /* Get checksum of the directoly block */ |
|
const BYTE* dir /* Directory entry block to be calculated */ |
|
) |
|
{ |
|
UINT i, szblk; |
|
WORD sum; |
|
|
|
|
|
szblk = (dir[XDIR_NumSec] + 1) * SZDIRE; |
|
for (i = sum = 0; i < szblk; i++) { |
|
if (i == XDIR_SetSum) { /* Skip sum field */ |
|
i++; |
|
} else { |
|
sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i]; |
|
} |
|
} |
|
return sum; |
|
} |
|
|
|
|
|
|
|
static |
|
WORD xname_sum ( /* Get check sum (to be used as hash) of the name */ |
|
const WCHAR* name /* File name to be calculated */ |
|
) |
|
{ |
|
WCHAR chr; |
|
WORD sum = 0; |
|
|
|
|
|
while ((chr = *name++) != 0) { |
|
chr = ff_wtoupper(chr); /* File name needs to be ignored case */ |
|
sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF); |
|
sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8); |
|
} |
|
return sum; |
|
} |
|
|
|
|
|
#if !_FS_READONLY && _USE_MKFS |
|
static |
|
DWORD xsum32 ( |
|
BYTE dat, /* Data to be sumed */ |
|
DWORD sum /* Previous value */ |
|
) |
|
{ |
|
sum = ((sum & 1) ? 0x80000000 : 0) + (sum >> 1) + dat; |
|
return sum; |
|
} |
|
#endif |
|
|
|
|
|
#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 |
|
/*------------------------------------------------------*/ |
|
/* exFAT: Get object information from a directory block */ |
|
/*------------------------------------------------------*/ |
|
|
|
static |
|
void get_xdir_info ( |
|
BYTE* dirb, /* Pointer to the direcotry entry block 85+C0+C1s */ |
|
FILINFO* fno /* Buffer to store the extracted file information */ |
|
) |
|
{ |
|
UINT di, si; |
|
WCHAR w; |
|
#if !_LFN_UNICODE |
|
UINT nc; |
|
#endif |
|
|
|
/* Get file name */ |
|
di = 0; |
|
#if _LFN_UNICODE |
|
for (si = SZDIRE * 2; di < dirb[XDIR_NumName]; si += 2, di++) { |
|
if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */ |
|
w = ld_word(dirb + si); /* Get a character */ |
|
if (di >= _MAX_LFN) { di = 0; break; } /* Buffer overflow --> inaccessible object name */ |
|
fno->fname[di] = w; /* Store it */ |
|
} |
|
#else |
|
for (si = SZDIRE * 2, nc = 0; nc < dirb[XDIR_NumName]; si += 2, nc++) { |
|
if ((si % SZDIRE) == 0) si += 2; /* Skip entry type field */ |
|
w = ff_convert(ld_word(dirb + si), 0); /* Get a character and Unicode -> OEM */ |
|
if (_DF1S && w >= 0x100) { /* Is it a double byte char? (always false at SBCS cfg) */ |
|
fno->fname[di++] = (char)(w >> 8); /* Put 1st byte of the DBC */ |
|
} |
|
if (w == 0 || di >= _MAX_LFN) { di = 0; break; } /* Invalid char or buffer overflow --> inaccessible object name */ |
|
fno->fname[di++] = (char)w; |
|
} |
|
#endif |
|
if (di == 0) fno->fname[di++] = '?'; /* Inaccessible object name? */ |
|
fno->fname[di] = 0; /* Terminate file name */ |
|
|
|
fno->altname[0] = 0; /* No SFN */ |
|
fno->fattrib = dirb[XDIR_Attr]; /* Attribute */ |
|
fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(dirb + XDIR_FileSize); /* Size */ |
|
fno->ftime = ld_word(dirb + XDIR_ModTime + 0); /* Time */ |
|
fno->fdate = ld_word(dirb + XDIR_ModTime + 2); /* Date */ |
|
} |
|
|
|
#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */ |
|
|
|
|
|
/*-----------------------------------*/ |
|
/* exFAT: Get a directry entry block */ |
|
/*-----------------------------------*/ |
|
|
|
static |
|
FRESULT load_xdir ( /* FR_INT_ERR: invalid entry block */ |
|
DIR* dp /* Pointer to the reading direcotry object pointing the 85 entry */ |
|
) |
|
{ |
|
FRESULT res; |
|
UINT i, sz_ent; |
|
BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the on-memory direcotry entry block 85+C0+C1s */ |
|
|
|
|
|
/* Load 85 entry */ |
|
res = move_window(dp->obj.fs, dp->sect); |
|
if (res != FR_OK) return res; |
|
if (dp->dir[XDIR_Type] != 0x85) return FR_INT_ERR; |
|
mem_cpy(dirb + 0, dp->dir, SZDIRE); |
|
sz_ent = (dirb[XDIR_NumSec] + 1) * SZDIRE; |
|
if (sz_ent < 3 * SZDIRE || sz_ent > 19 * SZDIRE) return FR_INT_ERR; |
|
|
|
/* Load C0 entry */ |
|
res = dir_next(dp, 0); |
|
if (res != FR_OK) return res; |
|
res = move_window(dp->obj.fs, dp->sect); |
|
if (res != FR_OK) return res; |
|
if (dp->dir[XDIR_Type] != 0xC0) return FR_INT_ERR; |
|
mem_cpy(dirb + SZDIRE, dp->dir, SZDIRE); |
|
if (MAXDIRB(dirb[XDIR_NumName]) > sz_ent) return FR_INT_ERR; |
|
|
|
/* Load C1 entries */ |
|
i = SZDIRE * 2; /* C1 offset */ |
|
do { |
|
res = dir_next(dp, 0); |
|
if (res != FR_OK) return res; |
|
res = move_window(dp->obj.fs, dp->sect); |
|
if (res != FR_OK) return res; |
|
if (dp->dir[XDIR_Type] != 0xC1) return FR_INT_ERR; |
|
if (i < MAXDIRB(_MAX_LFN)) mem_cpy(dirb + i, dp->dir, SZDIRE); |
|
} while ((i += SZDIRE) < sz_ent); |
|
|
|
/* Sanity check (do it when accessible object name) */ |
|
if (i <= MAXDIRB(_MAX_LFN)) { |
|
if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR; |
|
} |
|
return FR_OK; |
|
} |
|
|
|
|
|
#if !_FS_READONLY || _FS_RPATH != 0 |
|
/*------------------------------------------------*/ |
|
/* exFAT: Load the object's directory entry block */ |
|
/*------------------------------------------------*/ |
|
static |
|
FRESULT load_obj_dir ( |
|
DIR* dp, /* Blank directory object to be used to access containing direcotry */ |
|
const _FDID* obj /* Object with its containing directory information */ |
|
) |
|
{ |
|
FRESULT res; |
|
|
|
/* Open object containing directory */ |
|
dp->obj.fs = obj->fs; |
|
dp->obj.sclust = obj->c_scl; |
|
dp->obj.stat = (BYTE)obj->c_size; |
|
dp->obj.objsize = obj->c_size & 0xFFFFFF00; |
|
dp->blk_ofs = obj->c_ofs; |
|
|
|
res = dir_sdi(dp, dp->blk_ofs); /* Goto object's entry block */ |
|
if (res == FR_OK) { |
|
res = load_xdir(dp); /* Load the object's entry block */ |
|
} |
|
return res; |
|
} |
|
#endif |
|
|
|
|
|
#if !_FS_READONLY |
|
/*-----------------------------------------------*/ |
|
/* exFAT: Store the directory block to the media */ |
|
/*-----------------------------------------------*/ |
|
static |
|
FRESULT store_xdir ( |
|
DIR* dp /* Pointer to the direcotry object */ |
|
) |
|
{ |
|
FRESULT res; |
|
UINT nent; |
|
BYTE* dirb = dp->obj.fs->dirbuf; /* Pointer to the direcotry entry block 85+C0+C1s */ |
|
|
|
/* Create set sum */ |
|
st_word(dirb + XDIR_SetSum, xdir_sum(dirb)); |
|
nent = dirb[XDIR_NumSec] + 1; |
|
|
|
/* Store the set of directory to the volume */ |
|
res = dir_sdi(dp, dp->blk_ofs); |
|
while (res == FR_OK) { |
|
res = move_window(dp->obj.fs, dp->sect); |
|
if (res != FR_OK) break; |
|
mem_cpy(dp->dir, dirb, SZDIRE); |
|
dp->obj.fs->wflag = 1; |
|
if (--nent == 0) break; |
|
dirb += SZDIRE; |
|
res = dir_next(dp, 0); |
|
} |
|
return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR; |
|
} |
|
|
|
|
|
|
|
/*-------------------------------------------*/ |
|
/* exFAT: Create a new directory enrty block */ |
|
/*-------------------------------------------*/ |
|
|
|
static |
|
void create_xdir ( |
|
BYTE* dirb, /* Pointer to the direcotry entry block buffer */ |
|
const WCHAR* lfn /* Pointer to the nul terminated file name */ |
|
) |
|
{ |
|
UINT i; |
|
BYTE nb, nc; |
|
WCHAR chr; |
|
|
|
|
|
/* Create 85+C0 entry */ |
|
mem_set(dirb, 0, 2 * SZDIRE); |
|
dirb[XDIR_Type] = 0x85; |
|
dirb[XDIR_Type + SZDIRE] = 0xC0; |
|
|
|
/* Create C1 entries */ |
|
nc = 0; nb = 1; chr = 1; i = SZDIRE * 2; |
|
do { |
|
dirb[i++] = 0xC1; dirb[i++] = 0; /* Entry type C1 */ |
|
do { /* Fill name field */ |
|
if (chr && (chr = lfn[nc]) != 0) nc++; /* Get a character if exist */ |
|
st_word(dirb + i, chr); /* Store it */ |
|
} while ((i += 2) % SZDIRE != 0); |
|
nb++; |
|
} while (lfn[nc]); /* Fill next entry if any char follows */ |
|
|
|
dirb[XDIR_NumName] = nc; /* Set name length */ |
|
dirb[XDIR_NumSec] = nb; /* Set block length */ |
|
st_word(dirb + XDIR_NameHash, xname_sum(lfn)); /* Set name hash */ |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
#endif /* _FS_EXFAT */ |
|
|
|
|
|
|
|
#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT |
|
/*-----------------------------------------------------------------------*/ |
|
/* Read an object from the directory */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT dir_read ( |
|
DIR* dp, /* Pointer to the directory object */ |
|
int vol /* Filtered by 0:file/directory or 1:volume label */ |
|
) |
|
{ |
|
FRESULT res = FR_NO_FILE; |
|
FATFS *fs = dp->obj.fs; |
|
BYTE a, c; |
|
#if _USE_LFN != 0 |
|
BYTE ord = 0xFF, sum = 0xFF; |
|
#endif |
|
|
|
while (dp->sect) { |
|
res = move_window(fs, dp->sect); |
|
if (res != FR_OK) break; |
|
c = dp->dir[DIR_Name]; /* Test for the entry type */ |
|
if (c == 0) { |
|
res = FR_NO_FILE; break; /* Reached to end of the directory */ |
|
} |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ |
|
if (_USE_LABEL && vol) { |
|
if (c == 0x83) break; /* Volume label entry? */ |
|
} else { |
|
if (c == 0x85) { /* Start of the file entry block? */ |
|
dp->blk_ofs = dp->dptr; /* Get location of the block */ |
|
res = load_xdir(dp); /* Load the entry block */ |
|
if (res == FR_OK) { |
|
dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK; /* Get attribute */ |
|
} |
|
break; |
|
} |
|
} |
|
} else |
|
#endif |
|
{ /* On the FAT12/16/32 volume */ |
|
dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */ |
|
#if _USE_LFN != 0 /* LFN configuration */ |
|
if (c == DDEM || c == '.' || (int)((a & ~AM_ARC) == AM_VOL) != vol) { /* An entry without valid data */ |
|
ord = 0xFF; |
|
} else { |
|
if (a == AM_LFN) { /* An LFN entry is found */ |
|
if (c & LLEF) { /* Is it start of an LFN sequence? */ |
|
sum = dp->dir[LDIR_Chksum]; |
|
c &= (BYTE)~LLEF; ord = c; |
|
dp->blk_ofs = dp->dptr; |
|
} |
|
/* Check LFN validity and capture it */ |
|
ord = (c == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF; |
|
} else { /* An SFN entry is found */ |
|
if (ord || sum != sum_sfn(dp->dir)) { /* Is there a valid LFN? */ |
|
dp->blk_ofs = 0xFFFFFFFF; /* It has no LFN. */ |
|
} |
|
break; |
|
} |
|
} |
|
#else /* Non LFN configuration */ |
|
if (c != DDEM && c != '.' && a != AM_LFN && (int)((a & ~AM_ARC) == 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; /* Terminate the read operation on error or EOT */ |
|
return res; |
|
} |
|
|
|
#endif /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */ |
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Directory handling - Find an object in the directory */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT dir_find ( /* FR_OK(0):succeeded, !=0:error */ |
|
DIR* dp /* Pointer to the directory object with the file name */ |
|
) |
|
{ |
|
FRESULT res; |
|
FATFS *fs = dp->obj.fs; |
|
BYTE c; |
|
#if _USE_LFN != 0 |
|
BYTE a, ord, sum; |
|
#endif |
|
|
|
res = dir_sdi(dp, 0); /* Rewind directory object */ |
|
if (res != FR_OK) return res; |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ |
|
BYTE nc; |
|
UINT di, ni; |
|
WORD hash = xname_sum(fs->lfnbuf); /* Hash value of the name to find */ |
|
|
|
while ((res = dir_read(dp, 0)) == FR_OK) { /* Read an item */ |
|
#if _MAX_LFN < 255 |
|
if (fs->dirbuf[XDIR_NumName] > _MAX_LFN) continue; /* Skip comparison if inaccessible object name */ |
|
#endif |
|
if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue; /* Skip comparison if hash mismatched */ |
|
for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) { /* Compare the name */ |
|
if ((di % SZDIRE) == 0) di += 2; |
|
if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(fs->lfnbuf[ni])) break; |
|
} |
|
if (nc == 0 && !fs->lfnbuf[ni]) break; /* Name matched? */ |
|
} |
|
return res; |
|
} |
|
#endif |
|
/* On the FAT12/16/32 volume */ |
|
#if _USE_LFN != 0 |
|
ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */ |
|
#endif |
|
do { |
|
res = move_window(fs, dp->sect); |
|
if (res != FR_OK) break; |
|
c = dp->dir[DIR_Name]; |
|
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ |
|
#if _USE_LFN != 0 /* LFN configuration */ |
|
dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; |
|
if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */ |
|
ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */ |
|
} else { |
|
if (a == AM_LFN) { /* An LFN entry is found */ |
|
if (!(dp->fn[NSFLAG] & NS_NOLFN)) { |
|
if (c & LLEF) { /* Is it start of LFN sequence? */ |
|
sum = dp->dir[LDIR_Chksum]; |
|
c &= (BYTE)~LLEF; ord = c; /* LFN start order */ |
|
dp->blk_ofs = dp->dptr; /* Start offset of LFN */ |
|
} |
|
/* Check validity of the LFN entry and compare it with given name */ |
|
ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF; |
|
} |
|
} else { /* An SFN entry is found */ |
|
if (!ord && sum == sum_sfn(dp->dir)) break; /* LFN matched? */ |
|
if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* SFN matched? */ |
|
ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */ |
|
} |
|
} |
|
#else /* Non LFN configuration */ |
|
dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK; |
|
if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break; /* Is it a valid entry? */ |
|
#endif |
|
res = dir_next(dp, 0); /* Next entry */ |
|
} while (res == FR_OK); |
|
|
|
return res; |
|
} |
|
|
|
|
|
|
|
|
|
#if !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* Register an object to the directory */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT dir_register ( /* FR_OK:succeeded, 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; |
|
FATFS *fs = dp->obj.fs; |
|
#if _USE_LFN != 0 /* LFN configuration */ |
|
UINT n, nlen, nent; |
|
BYTE sn[12], sum; |
|
|
|
|
|
if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME; /* Check name validity */ |
|
for (nlen = 0; fs->lfnbuf[nlen]; nlen++) ; /* Get lfn length */ |
|
|
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ |
|
DIR dj; |
|
|
|
nent = (nlen + 14) / 15 + 2; /* Number of entries to allocate (85+C0+C1s) */ |
|
res = dir_alloc(dp, nent); /* Allocate entries */ |
|
if (res != FR_OK) return res; |
|
dp->blk_ofs = dp->dptr - SZDIRE * (nent - 1); /* Set the allocated entry block offset */ |
|
|
|
if (dp->obj.sclust != 0 && (dp->obj.stat & 4)) { /* Has the sub-directory been stretched? */ |
|
dp->obj.objsize += (DWORD)fs->csize * SS(fs); /* Increase the directory size by cluster size */ |
|
res = fill_first_frag(&dp->obj); /* Fill first fragment on the FAT if needed */ |
|
if (res != FR_OK) return res; |
|
res = fill_last_frag(&dp->obj, dp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */ |
|
if (res != FR_OK) return res; |
|
res = load_obj_dir(&dj, &dp->obj); /* Load the object status */ |
|
if (res != FR_OK) return res; |
|
st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize); /* Update the allocation status */ |
|
st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize); |
|
fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1; |
|
res = store_xdir(&dj); /* Store the object status */ |
|
if (res != FR_OK) return res; |
|
} |
|
|
|
create_xdir(fs->dirbuf, fs->lfnbuf); /* Create on-memory directory block to be written later */ |
|
return FR_OK; |
|
} |
|
#endif |
|
/* On the FAT12/16/32 volume */ |
|
mem_cpy(sn, dp->fn, 12); |
|
if (sn[NSFLAG] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */ |
|
dp->fn[NSFLAG] = NS_NOLFN; /* Find only SFN */ |
|
for (n = 1; n < 100; n++) { |
|
gen_numname(dp->fn, sn, fs->lfnbuf, 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' */ |
|
dp->fn[NSFLAG] = sn[NSFLAG]; |
|
} |
|
|
|
/* Create an SFN with/without LFNs. */ |
|
nent = (sn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1; /* Number of entries to allocate */ |
|
res = dir_alloc(dp, nent); /* Allocate entries */ |
|
if (res == FR_OK && --nent) { /* Set LFN entry if needed */ |
|
res = dir_sdi(dp, dp->dptr - nent * SZDIRE); |
|
if (res == FR_OK) { |
|
sum = sum_sfn(dp->fn); /* Checksum value of the SFN tied to the LFN */ |
|
do { /* Store LFN entries in bottom first */ |
|
res = move_window(fs, dp->sect); |
|
if (res != FR_OK) break; |
|
put_lfn(fs->lfnbuf, dp->dir, (BYTE)nent, sum); |
|
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 |
|
|
|
/* Set SFN entry */ |
|
if (res == FR_OK) { |
|
res = move_window(fs, dp->sect); |
|
if (res == FR_OK) { |
|
mem_set(dp->dir, 0, SZDIRE); /* Clean the entry */ |
|
mem_cpy(dp->dir + DIR_Name, dp->fn, 11); /* Put SFN */ |
|
#if _USE_LFN != 0 |
|
dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT); /* Put NT flag */ |
|
#endif |
|
fs->wflag = 1; |
|
} |
|
} |
|
|
|
return res; |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
|
|
|
|
|
|
#if !_FS_READONLY && _FS_MINIMIZE == 0 |
|
/*-----------------------------------------------------------------------*/ |
|
/* Remove an object from the directory */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT dir_remove ( /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */ |
|
DIR* dp /* Directory object pointing the entry to be removed */ |
|
) |
|
{ |
|
FRESULT res; |
|
FATFS *fs = dp->obj.fs; |
|
#if _USE_LFN != 0 /* LFN configuration */ |
|
DWORD last = dp->dptr; |
|
|
|
res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs); /* Goto top of the entry block if LFN is exist */ |
|
if (res == FR_OK) { |
|
do { |
|
res = move_window(fs, dp->sect); |
|
if (res != FR_OK) break; |
|
/* Mark an entry 'deleted' */ |
|
if (_FS_EXFAT && fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ |
|
dp->dir[XDIR_Type] &= 0x7F; |
|
} else { /* On the FAT12/16/32 volume */ |
|
dp->dir[DIR_Name] = DDEM; |
|
} |
|
fs->wflag = 1; |
|
if (dp->dptr >= last) break; /* If reached last entry then 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 = move_window(fs, dp->sect); |
|
if (res == FR_OK) { |
|
dp->dir[DIR_Name] = DDEM; |
|
fs->wflag = 1; |
|
} |
|
#endif |
|
|
|
return res; |
|
} |
|
|
|
#endif /* !_FS_READONLY && _FS_MINIMIZE == 0 */ |
|
|
|
|
|
|
|
#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 |
|
/*-----------------------------------------------------------------------*/ |
|
/* Get file information from directory entry */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
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, j; |
|
TCHAR c; |
|
DWORD tm; |
|
#if _USE_LFN != 0 |
|
WCHAR w, lfv; |
|
FATFS *fs = dp->obj.fs; |
|
#endif |
|
|
|
|
|
fno->fname[0] = 0; /* Invaidate file info */ |
|
if (!dp->sect) return; /* Exit if read pointer has reached end of directory */ |
|
|
|
#if _USE_LFN != 0 /* LFN configuration */ |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ |
|
get_xdir_info(fs->dirbuf, fno); |
|
return; |
|
} else |
|
#endif |
|
{ /* On the FAT12/16/32 volume */ |
|
if (dp->blk_ofs != 0xFFFFFFFF) { /* Get LFN if available */ |
|
i = j = 0; |
|
while ((w = fs->lfnbuf[j++]) != 0) { /* Get an LFN character */ |
|
#if !_LFN_UNICODE |
|
w = ff_convert(w, 0); /* Unicode -> OEM */ |
|
if (w == 0) { 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 at SBCS cfg) */ |
|
fno->fname[i++] = (char)(w >> 8); |
|
} |
|
#endif |
|
if (i >= _MAX_LFN) { i = 0; break; } /* No LFN if buffer overflow */ |
|
fno->fname[i++] = (TCHAR)w; |
|
} |
|
fno->fname[i] = 0; /* Terminate the LFN */ |
|
} |
|
} |
|
|
|
i = j = 0; |
|
lfv = fno->fname[i]; /* LFN is exist if non-zero */ |
|
while (i < 11) { /* Copy name body and extension */ |
|
c = (TCHAR)dp->dir[i++]; |
|
if (c == ' ') continue; /* Skip padding spaces */ |
|
if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */ |
|
if (i == 9) { /* Insert a . if extension is exist */ |
|
if (!lfv) fno->fname[j] = '.'; |
|
fno->altname[j++] = '.'; |
|
} |
|
#if _LFN_UNICODE |
|
if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dp->dir[i])) { |
|
c = c << 8 | dp->dir[i++]; |
|
} |
|
c = ff_convert(c, 1); /* OEM -> Unicode */ |
|
if (!c) c = '?'; |
|
#endif |
|
fno->altname[j] = c; |
|
if (!lfv) { |
|
if (IsUpper(c) && (dp->dir[DIR_NTres] & ((i >= 9) ? NS_EXT : NS_BODY))) { |
|
c += 0x20; /* To lower */ |
|
} |
|
fno->fname[j] = c; |
|
} |
|
j++; |
|
} |
|
if (!lfv) { |
|
fno->fname[j] = 0; |
|
if (!dp->dir[DIR_NTres]) j = 0; /* Altname is no longer needed if neither LFN nor case info is exist. */ |
|
} |
|
fno->altname[j] = 0; /* Terminate the SFN */ |
|
|
|
#else /* Non-LFN configuration */ |
|
i = j = 0; |
|
while (i < 11) { /* Copy name body and extension */ |
|
c = (TCHAR)dp->dir[i++]; |
|
if (c == ' ') continue; /* Skip padding spaces */ |
|
if (c == RDDEM) c = (TCHAR)DDEM; /* Restore replaced DDEM character */ |
|
if (i == 9) fno->fname[j++] = '.'; /* Insert a . if extension is exist */ |
|
fno->fname[j++] = c; |
|
} |
|
fno->fname[j] = 0; |
|
#endif |
|
|
|
fno->fattrib = dp->dir[DIR_Attr]; /* Attribute */ |
|
fno->fsize = ld_dword(dp->dir + DIR_FileSize); /* Size */ |
|
tm = ld_dword(dp->dir + DIR_ModTime); /* Timestamp */ |
|
fno->ftime = (WORD)tm; fno->fdate = (WORD)(tm >> 16); |
|
} |
|
|
|
#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */ |
|
|
|
|
|
|
|
#if _USE_FIND && _FS_MINIMIZE <= 1 |
|
/*-----------------------------------------------------------------------*/ |
|
/* Pattern matching */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
WCHAR get_achar ( /* Get a character and advances ptr 1 or 2 */ |
|
const TCHAR** ptr /* Pointer to pointer to the SBCS/DBCS/Unicode string */ |
|
) |
|
{ |
|
#if !_LFN_UNICODE |
|
WCHAR chr; |
|
|
|
chr = (BYTE)*(*ptr)++; /* Get a byte */ |
|
if (IsLower(chr)) chr -= 0x20; /* To upper ASCII char */ |
|
#ifdef _EXCVT |
|
if (chr >= 0x80) chr = ExCvt[chr - 0x80]; /* To upper SBCS extended char */ |
|
#else |
|
if (IsDBCS1(chr) && IsDBCS2(**ptr)) { /* Get DBC 2nd byte if needed */ |
|
chr = chr << 8 | (BYTE)*(*ptr)++; |
|
} |
|
#endif |
|
return chr; |
|
#else |
|
return ff_wtoupper(*(*ptr)++); /* Get a word and to upper */ |
|
#endif |
|
} |
|
|
|
|
|
static |
|
int pattern_matching ( /* 0:not matched, 1:matched */ |
|
const TCHAR* pat, /* Matching pattern */ |
|
const TCHAR* nam, /* String to be tested */ |
|
int skip, /* Number of pre-skip chars (number of ?s) */ |
|
int inf /* Infinite search (* specified) */ |
|
) |
|
{ |
|
const TCHAR *pp, *np; |
|
WCHAR pc, nc; |
|
int nm, nx; |
|
|
|
|
|
while (skip--) { /* Pre-skip name chars */ |
|
if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */ |
|
} |
|
if (!*pat && inf) return 1; /* (short circuit) */ |
|
|
|
do { |
|
pp = pat; np = nam; /* Top of pattern and name to match */ |
|
for (;;) { |
|
if (*pp == '?' || *pp == '*') { /* Wildcard? */ |
|
nm = nx = 0; |
|
do { /* Analyze the wildcard chars */ |
|
if (*pp++ == '?') nm++; else nx = 1; |
|
} while (*pp == '?' || *pp == '*'); |
|
if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */ |
|
nc = *np; break; /* Branch mismatched */ |
|
} |
|
pc = get_achar(&pp); /* Get a pattern char */ |
|
nc = get_achar(&np); /* Get a name char */ |
|
if (pc != nc) break; /* Branch mismatched? */ |
|
if (pc == 0) return 1; /* Branch matched? (matched at end of both strings) */ |
|
} |
|
get_achar(&nam); /* nam++ */ |
|
} while (inf && nc); /* Retry until end of name if infinite search is specified */ |
|
|
|
return 0; |
|
} |
|
|
|
#endif /* _USE_FIND && _FS_MINIMIZE <= 1 */ |
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Pick a top segment and create the object name in directory form */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT create_name ( /* FR_OK: successful, FR_INVALID_NAME: could not create */ |
|
DIR* dp, /* Pointer to the directory object */ |
|
const TCHAR** path /* Pointer to pointer to the segment in the path string */ |
|
) |
|
{ |
|
#if _USE_LFN != 0 /* LFN configuration */ |
|
BYTE b, cf; |
|
WCHAR w, *lfn; |
|
UINT i, ni, si, di; |
|
const TCHAR *p; |
|
|
|
/* Create LFN in Unicode */ |
|
p = *path; lfn = dp->obj.fs->lfnbuf; si = di = 0; |
|
for (;;) { |
|
w = p[si++]; /* Get a character */ |
|
if (w < ' ') break; /* Break if end of the path name */ |
|
if (w == '/' || w == '\\') { /* Break if a separator is found */ |
|
while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */ |
|
break; |
|
} |
|
if (di >= _MAX_LFN) return FR_INVALID_NAME; /* Reject too long 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 */ |
|
w = (w << 8) + b; /* Create a DBC */ |
|
if (!IsDBCS2(b)) return FR_INVALID_NAME; /* Reject invalid sequence */ |
|
} |
|
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)) return FR_INVALID_NAME; /* Reject illegal characters for LFN */ |
|
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 the path */ |
|
#if _FS_RPATH != 0 |
|
if ((di == 1 && lfn[di - 1] == '.') || |
|
(di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) { /* Is this segment a dot name? */ |
|
lfn[di] = 0; |
|
for (i = 0; i < 11; i++) /* Create dot name for SFN entry */ |
|
dp->fn[i] = (i < di) ? '.' : ' '; |
|
dp->fn[i] = cf | NS_DOT; /* This is a dot entry */ |
|
return FR_OK; |
|
} |
|
#endif |
|
while (di) { /* Snip off trailing spaces and dots if exist */ |
|
w = lfn[di - 1]; |
|
if (w != ' ' && w != '.') break; |
|
di--; |
|
} |
|
lfn[di] = 0; /* LFN is created */ |
|
if (di == 0) return FR_INVALID_NAME; /* Reject nul name */ |
|
|
|
/* 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) */ |
|
|
|
i = b = 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) { /* Is this DBC? (always false at SBCS cfg) */ |
|
if (i >= ni - 1) { |
|
cf |= NS_LOSS | NS_LFN; i = ni; continue; |
|
} |
|
dp->fn[i++] = (BYTE)(w >> 8); |
|
} else { /* SBC */ |
|
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] == DDEM) dp->fn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */ |
|
|
|
if (ni == 8) b <<= 2; |
|
if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN; /* Create LFN entry when there are composite capitals */ |
|
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[NSFLAG] = cf; /* SFN is created */ |
|
|
|
return FR_OK; |
|
|
|
|
|
#else /* _USE_LFN != 0 : Non-LFN configuration */ |
|
BYTE c, d, *sfn; |
|
UINT ni, si, i; |
|
const char *p; |
|
|
|
/* Create file name in directory form */ |
|
p = *path; sfn = dp->fn; |
|
mem_set(sfn, ' ', 11); |
|
si = i = 0; ni = 8; |
|
#if _FS_RPATH != 0 |
|
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[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of the path */ |
|
return FR_OK; |
|
} |
|
#endif |
|
for (;;) { |
|
c = (BYTE)p[si++]; |
|
if (c <= ' ') break; /* Break if end of the path name */ |
|
if (c == '/' || c == '\\') { /* Break if a separator is found */ |
|
while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */ |
|
break; |
|
} |
|
if (c == '.' || i >= ni) { /* End of body or over size? */ |
|
if (ni == 11 || c != '.') return FR_INVALID_NAME; /* Over size or invalid dot */ |
|
i = 8; ni = 11; /* Goto extension */ |
|
continue; |
|
} |
|
if (c >= 0x80) { /* Extended character? */ |
|
#ifdef _EXCVT |
|
c = ExCvt[c - 0x80]; /* To upper extended characters (SBCS cfg) */ |
|
#else |
|
#if !_DF1S |
|
return FR_INVALID_NAME; /* Reject extended characters (ASCII only cfg) */ |
|
#endif |
|
#endif |
|
} |
|
if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */ |
|
d = (BYTE)p[si++]; /* Get 2nd byte */ |
|
if (!IsDBCS2(d) || i >= ni - 1) return FR_INVALID_NAME; /* Reject invalid DBC */ |
|
sfn[i++] = c; |
|
sfn[i++] = d; |
|
} else { /* SBC */ |
|
if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) return FR_INVALID_NAME; /* Reject illegal chrs for SFN */ |
|
if (IsLower(c)) c -= 0x20; /* To upper */ |
|
sfn[i++] = c; |
|
} |
|
} |
|
*path = p + si; /* Return pointer to the next segment */ |
|
if (i == 0) return FR_INVALID_NAME; /* Reject nul string */ |
|
|
|
if (sfn[0] == DDEM) sfn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */ |
|
sfn[NSFLAG] = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of the path */ |
|
|
|
return FR_OK; |
|
#endif /* _USE_LFN != 0 */ |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* 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 ns; |
|
_FDID *obj = &dp->obj; |
|
FATFS *fs = obj->fs; |
|
|
|
|
|
#if _FS_RPATH != 0 |
|
if (*path != '/' && *path != '\\') { /* Without heading separator */ |
|
obj->sclust = fs->cdir; /* Start from current directory */ |
|
} else |
|
#endif |
|
{ /* With heading separator */ |
|
while (*path == '/' || *path == '\\') path++; /* Strip heading separator */ |
|
obj->sclust = 0; /* Start from root directory */ |
|
} |
|
#if _FS_EXFAT |
|
obj->n_frag = 0; /* Invalidate last fragment counter of the object */ |
|
#if _FS_RPATH != 0 |
|
if (fs->fs_type == FS_EXFAT && obj->sclust) { /* Retrieve the sub-directory status if needed */ |
|
DIR dj; |
|
|
|
obj->c_scl = fs->cdc_scl; |
|
obj->c_size = fs->cdc_size; |
|
obj->c_ofs = fs->cdc_ofs; |
|
res = load_obj_dir(&dj, obj); |
|
if (res != FR_OK) return res; |
|
obj->objsize = ld_dword(fs->dirbuf + XDIR_FileSize); |
|
obj->stat = fs->dirbuf[XDIR_GenFlags] & 2; |
|
} |
|
#endif |
|
#endif |
|
|
|
if ((UINT)*path < ' ') { /* Null path name is the origin directory itself */ |
|
dp->fn[NSFLAG] = NS_NONAME; |
|
res = dir_sdi(dp, 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 segment name */ |
|
ns = dp->fn[NSFLAG]; |
|
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, stay there */ |
|
if (!(ns & NS_LAST)) continue; /* Continue to follow if not last segment */ |
|
dp->fn[NSFLAG] = NS_NONAME; |
|
res = FR_OK; |
|
} 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. */ |
|
/* Get into the sub-directory */ |
|
if (!(obj->attr & AM_DIR)) { /* It is not a sub-directory and cannot follow */ |
|
res = FR_NO_PATH; break; |
|
} |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* Save containing directory information for next dir */ |
|
obj->c_scl = obj->sclust; |
|
obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat; |
|
obj->c_ofs = dp->blk_ofs; |
|
obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Open next directory */ |
|
obj->stat = fs->dirbuf[XDIR_GenFlags] & 2; |
|
obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize); |
|
} else |
|
#endif |
|
{ |
|
obj->sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs)); /* Open next directory */ |
|
} |
|
} |
|
} |
|
|
|
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 _STR_VOLUME_ID /* Find string drive id */ |
|
static const char* const volid[] = {_VOLUME_STRS}; |
|
const char *sp; |
|
char c; |
|
TCHAR tc; |
|
#endif |
|
|
|
|
|
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; |
|
} |
|
} |
|
#if _STR_VOLUME_ID |
|
else { /* No numeric drive number, find string drive id */ |
|
i = 0; tt++; |
|
do { |
|
sp = volid[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 != 0 && _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, 1:exFAT, 2:Valid BS but not FAT, 3:Not a BS, 4:Disk error */ |
|
FATFS* fs, /* File system object */ |
|
DWORD sect /* Sector# (lba) to load and check if it is an FAT-VBR or not */ |
|
) |
|
{ |
|
fs->wflag = 0; fs->winsect = 0xFFFFFFFF; /* Invaidate window */ |
|
if (move_window(fs, sect) != FR_OK) return 4; /* Load boot record */ |
|
|
|
if (ld_word(fs->win + BS_55AA) != 0xAA55) return 3; /* Check boot record signature (always placed here even if the sector size is >512) */ |
|
|
|
if (fs->win[BS_JmpBoot] == 0xE9 || (fs->win[BS_JmpBoot] == 0xEB && fs->win[BS_JmpBoot + 2] == 0x90)) { |
|
if ((ld_dword(fs->win + BS_FilSysType) & 0xFFFFFF) == 0x544146) return 0; /* Check "FAT" string */ |
|
if (ld_dword(fs->win + BS_FilSysType32) == 0x33544146) return 0; /* Check "FAT3" string */ |
|
} |
|
#if _FS_EXFAT |
|
if (!mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11)) return 1; |
|
#endif |
|
return 2; |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Find logical drive and check if the volume is mounted */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */ |
|
const TCHAR** path, /* Pointer to pointer to the path name (drive number) */ |
|
FATFS** rfs, /* Pointer to pointer to the found file system object */ |
|
BYTE mode /* !=0: Check write protection for write access */ |
|
) |
|
{ |
|
BYTE fmt, *pt; |
|
int vol; |
|
DSTATUS stat; |
|
DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4]; |
|
WORD nrsv; |
|
FATFS *fs; |
|
UINT i; |
|
|
|
|
|
/* Get logical drive number */ |
|
*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 */ |
|
|
|
mode &= (BYTE)~FA_READ; /* Desired access mode, write access or not */ |
|
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 && mode && (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 && mode && (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) return FR_DISK_ERR; |
|
if (SS(fs) > _MAX_SS || SS(fs) < _MIN_SS || (SS(fs) & (SS(fs) - 1))) return FR_DISK_ERR; |
|
#endif |
|
|
|
/* Find an FAT partition on the drive. Supports only generic partitioning rules, FDISK and SFD. */ |
|
bsect = 0; |
|
fmt = check_fs(fs, bsect); /* Load sector 0 and check if it is an FAT-VBR as SFD */ |
|
if (fmt == 2 || (fmt < 2 && LD2PT(vol) != 0)) { /* Not an FAT-VBR or forced partition number */ |
|
for (i = 0; i < 4; i++) { /* Get partition offset */ |
|
pt = fs->win + (MBR_Table + i * SZ_PTE); |
|
br[i] = pt[PTE_System] ? ld_dword(pt + PTE_StLba) : 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) : 3; /* Check the partition */ |
|
} while (LD2PT(vol) == 0 && fmt >= 2 && ++i < 4); |
|
} |
|
if (fmt == 4) return FR_DISK_ERR; /* An error occured in the disk I/O layer */ |
|
if (fmt >= 2) return FR_NO_FILESYSTEM; /* No FAT volume is found */ |
|
|
|
/* An FAT volume is found (bsect). Following code initializes the file system object */ |
|
|
|
#if _FS_EXFAT |
|
if (fmt == 1) { |
|
QWORD maxlba; |
|
|
|
for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ; /* Check zero filler */ |
|
if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM; |
|
|
|
if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM; /* Check exFAT revision (Must be 1.0) */ |
|
|
|
if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs)) { /* (BPB_BytsPerSecEx must be equal to the physical sector size) */ |
|
return FR_NO_FILESYSTEM; |
|
} |
|
|
|
maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect; /* Last LBA + 1 of the volume */ |
|
if (maxlba >= 0x100000000) return FR_NO_FILESYSTEM; /* (It cannot be handled in 32-bit LBA) */ |
|
|
|
fs->fsize = ld_dword(fs->win + BPB_FatSzEx); /* Number of sectors per FAT */ |
|
|
|
fs->n_fats = fs->win[BPB_NumFATsEx]; /* Number of FATs */ |
|
if (fs->n_fats != 1) return FR_NO_FILESYSTEM; /* (Supports only 1 FAT) */ |
|
|
|
fs->csize = 1 << fs->win[BPB_SecPerClusEx]; /* Cluster size */ |
|
if (fs->csize == 0) return FR_NO_FILESYSTEM; /* (Must be 1..32768) */ |
|
|
|
nclst = ld_dword(fs->win + BPB_NumClusEx); /* Number of clusters */ |
|
if (nclst > MAX_EXFAT) return FR_NO_FILESYSTEM; /* (Too many clusters) */ |
|
fs->n_fatent = nclst + 2; |
|
|
|
/* Boundaries and Limits */ |
|
fs->volbase = bsect; |
|
fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx); |
|
fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx); |
|
if (maxlba < (QWORD)fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM; /* (Volume size must not be smaller than the size requiered) */ |
|
fs->dirbase = ld_dword(fs->win + BPB_RootClusEx); |
|
|
|
/* Check if bitmap location is in assumption (at the first cluster) */ |
|
if (move_window(fs, clust2sect(fs, fs->dirbase)) != FR_OK) return FR_DISK_ERR; |
|
for (i = 0; i < SS(fs); i += SZDIRE) { |
|
if (fs->win[i] == 0x81 && ld_dword(fs->win + i + 20) == 2) break; /* 81 entry with cluster #2? */ |
|
} |
|
if (i == SS(fs)) return FR_NO_FILESYSTEM; |
|
#if !_FS_READONLY |
|
fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */ |
|
#endif |
|
fmt = FS_EXFAT; /* FAT sub-type */ |
|
} else |
|
#endif /* _FS_EXFAT */ |
|
{ |
|
if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM; /* (BPB_BytsPerSec must be equal to the physical sector size) */ |
|
|
|
fasize = ld_word(fs->win + BPB_FATSz16); /* Number of sectors per FAT */ |
|
if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32); |
|
fs->fsize = fasize; |
|
|
|
fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FATs */ |
|
if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */ |
|
fasize *= fs->n_fats; /* Number of sectors for FAT area */ |
|
|
|
fs->csize = fs->win[BPB_SecPerClus]; /* Cluster size */ |
|
if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */ |
|
|
|
fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt); /* Number of root directory entries */ |
|
if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM; /* (Must be sector aligned) */ |
|
|
|
tsect = ld_word(fs->win + BPB_TotSec16); /* Number of sectors on the volume */ |
|
if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32); |
|
|
|
nrsv = ld_word(fs->win + BPB_RsvdSecCnt); /* Number of reserved sectors */ |
|
if (nrsv == 0) return FR_NO_FILESYSTEM; /* (Must not be 0) */ |
|
|
|
/* Determine the FAT sub type */ |
|
sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE); /* RSV + FAT + DIR */ |
|
if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ |
|
nclst = (tsect - sysect) / fs->csize; /* Number of clusters */ |
|
if (nclst == 0) return FR_NO_FILESYSTEM; /* (Invalid volume size) */ |
|
fmt = FS_FAT32; |
|
if (nclst <= MAX_FAT16) fmt = FS_FAT16; |
|
if (nclst <= MAX_FAT12) fmt = FS_FAT12; |
|
|
|
/* 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 (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM; /* (Must be FAT32 revision 0.0) */ |
|
if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */ |
|
fs->dirbase = ld_dword(fs->win + BPB_RootClus32); /* Root directory start cluster */ |
|
szbfat = fs->n_fatent * 4; /* (Needed FAT size) */ |
|
} else { |
|
if (fs->n_rootdir == 0) 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)) return FR_NO_FILESYSTEM; /* (BPB_FATSz must not be less than the size needed) */ |
|
|
|
#if !_FS_READONLY |
|
/* Get FSINFO if available */ |
|
fs->last_clst = fs->free_clst = 0xFFFFFFFF; /* Initialize cluster allocation information */ |
|
fs->fsi_flag = 0x80; |
|
#if (_FS_NOFSINFO & 3) != 3 |
|
if (fmt == FS_FAT32 /* Enable FSINFO only if FAT32 and BPB_FSInfo32 == 1 */ |
|
&& ld_word(fs->win + BPB_FSInfo32) == 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_clst = ld_dword(fs->win + FSI_Free_Count); |
|
#endif |
|
#if (_FS_NOFSINFO & 2) == 0 |
|
fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free); |
|
#endif |
|
} |
|
} |
|
#endif /* (_FS_NOFSINFO & 3) != 3 */ |
|
#endif /* !_FS_READONLY */ |
|
} |
|
|
|
fs->fs_type = fmt; /* FAT sub-type */ |
|
fs->id = ++Fsid; /* File system mount ID */ |
|
#if _USE_LFN == 1 |
|
fs->lfnbuf = LfnBuf; /* Static LFN working buffer */ |
|
#if _FS_EXFAT |
|
fs->dirbuf = DirBuf; /* Static directory block scratchpad buuffer */ |
|
#endif |
|
#endif |
|
#if _FS_RPATH != 0 |
|
fs->cdir = 0; /* Initialize current directory */ |
|
#endif |
|
#if _FS_LOCK != 0 /* Clear file lock semaphores */ |
|
clear_lock(fs); |
|
#endif |
|
return FR_OK; |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Check if the file/directory object is valid or not */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
static |
|
FRESULT validate ( /* Returns FR_OK or FR_INVALID_OBJECT */ |
|
_FDID* obj, /* Pointer to the _OBJ, the 1st member in the FIL/DIR object, to check validity */ |
|
FATFS** fs /* Pointer to pointer to the owner file system object to return */ |
|
) |
|
{ |
|
FRESULT res = FR_INVALID_OBJECT; |
|
|
|
|
|
if (obj && obj->fs && obj->fs->fs_type && obj->id == obj->fs->id) { /* Test if the object is valid */ |
|
#if _FS_REENTRANT |
|
if (lock_fs(obj->fs)) { /* Obtain the filesystem object */ |
|
if (!(disk_status(obj->fs->drv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */ |
|
res = FR_OK; |
|
} else { |
|
unlock_fs(obj->fs, FR_OK); |
|
} |
|
} else { |
|
res = FR_TIMEOUT; |
|
} |
|
#else |
|
if (!(disk_status(obj->fs->drv) & STA_NOINIT)) { /* Test if the phsical drive is kept initialized */ |
|
res = FR_OK; |
|
} |
|
#endif |
|
} |
|
*fs = (res == FR_OK) ? obj->fs : 0; /* Corresponding filesystem object */ |
|
return res; |
|
} |
|
|
|
|
|
|
|
|
|
/*--------------------------------------------------------------------------- |
|
|
|
Public Functions (FatFs API) |
|
|
|
----------------------------------------------------------------------------*/ |
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* 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 /* Mode option 0:Do not mount (delayed mount), 1:Mount immediately */ |
|
) |
|
{ |
|
FATFS *cfs; |
|
int vol; |
|
FRESULT res; |
|
const TCHAR *rp = path; |
|
|
|
|
|
/* Get logical drive number */ |
|
vol = get_ldnumber(&rp); |
|
if (vol < 0) return FR_INVALID_DRIVE; |
|
cfs = FatFs[vol]; /* Pointer to fs object */ |
|
|
|
if (cfs) { |
|
#if _FS_LOCK != 0 |
|
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(&path, &fs, 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; |
|
FATFS *fs; |
|
#if !_FS_READONLY |
|
DWORD dw, cl, bcs, clst, sc; |
|
FSIZE_t ofs; |
|
#endif |
|
DEF_NAMBUF |
|
|
|
|
|
if (!fp) return FR_INVALID_OBJECT; |
|
|
|
/* Get logical drive */ |
|
mode &= _FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND | FA_SEEKEND; |
|
res = find_volume(&path, &fs, mode); |
|
if (res == FR_OK) { |
|
dj.obj.fs = fs; |
|
INIT_NAMBUF(fs); |
|
res = follow_path(&dj, path); /* Follow the file path */ |
|
#if !_FS_READONLY /* R/W configuration */ |
|
if (res == FR_OK) { |
|
if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */ |
|
res = FR_INVALID_NAME; |
|
} |
|
#if _FS_LOCK != 0 |
|
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)) { |
|
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 != 0 |
|
res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES; |
|
#else |
|
res = dir_register(&dj); |
|
#endif |
|
} |
|
mode |= FA_CREATE_ALWAYS; /* File is created */ |
|
} |
|
else { /* Any object is already existing */ |
|
if (dj.obj.attr & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */ |
|
res = FR_DENIED; |
|
} else { |
|
if (mode & FA_CREATE_NEW) res = FR_EXIST; /* Cannot create as new file */ |
|
} |
|
} |
|
if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */ |
|
dw = GET_FATTIME(); |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
/* Get current allocation info */ |
|
fp->obj.fs = fs; |
|
fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus); |
|
fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize); |
|
fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2; |
|
fp->obj.n_frag = 0; |
|
/* Initialize directory entry block */ |
|
st_dword(fs->dirbuf + XDIR_CrtTime, dw); /* Set created time */ |
|
fs->dirbuf[XDIR_CrtTime10] = 0; |
|
st_dword(fs->dirbuf + XDIR_ModTime, dw); /* Set modified time */ |
|
fs->dirbuf[XDIR_ModTime10] = 0; |
|
fs->dirbuf[XDIR_Attr] = AM_ARC; /* Reset attribute */ |
|
st_dword(fs->dirbuf + XDIR_FstClus, 0); /* Reset file allocation info */ |
|
st_qword(fs->dirbuf + XDIR_FileSize, 0); |
|
st_qword(fs->dirbuf + XDIR_ValidFileSize, 0); |
|
fs->dirbuf[XDIR_GenFlags] = 1; |
|
res = store_xdir(&dj); |
|
if (res == FR_OK && fp->obj.sclust) { /* Remove the cluster chain if exist */ |
|
res = remove_chain(&fp->obj, fp->obj.sclust, 0); |
|
fs->last_clst = fp->obj.sclust - 1; /* Reuse the cluster hole */ |
|
} |
|
} else |
|
#endif |
|
{ |
|
/* Clean directory info */ |
|
st_dword(dj.dir + DIR_CrtTime, dw); /* Set created time */ |
|
st_dword(dj.dir + DIR_ModTime, dw); /* Set modified time */ |
|
dj.dir[DIR_Attr] = AM_ARC; /* Reset attribute */ |
|
cl = ld_clust(fs, dj.dir); /* Get cluster chain */ |
|
st_clust(fs, dj.dir, 0); /* Reset file allocation info */ |
|
st_dword(dj.dir + DIR_FileSize, 0); |
|
fs->wflag = 1; |
|
|
|
if (cl) { /* Remove the cluster chain if exist */ |
|
dw = fs->winsect; |
|
res = remove_chain(&dj.obj, cl, 0); |
|
if (res == FR_OK) { |
|
res = move_window(fs, dw); |
|
fs->last_clst = cl - 1; /* Reuse the cluster hole */ |
|
} |
|
} |
|
} |
|
} |
|
} |
|
else { /* Open an existing file */ |
|
if (res == FR_OK) { /* Following succeeded */ |
|
if (dj.obj.attr & AM_DIR) { /* It is a directory */ |
|
res = FR_NO_FILE; |
|
} else { |
|
if ((mode & FA_WRITE) && (dj.obj.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_MODIFIED; |
|
fp->dir_sect = fs->winsect; /* Pointer to the directory entry */ |
|
fp->dir_ptr = dj.dir; |
|
#if _FS_LOCK != 0 |
|
fp->obj.lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0); |
|
if (!fp->obj.lockid) res = FR_INT_ERR; |
|
#endif |
|
} |
|
#else /* R/O configuration */ |
|
if (res == FR_OK) { |
|
if (dj.fn[NSFLAG] & NS_NONAME) { /* Origin directory itself? */ |
|
res = FR_INVALID_NAME; |
|
} else { |
|
if (dj.obj.attr & AM_DIR) { /* It is a directory */ |
|
res = FR_NO_FILE; |
|
} |
|
} |
|
} |
|
#endif |
|
|
|
if (res == FR_OK) { |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
fp->obj.c_scl = dj.obj.sclust; /* Get containing directory info */ |
|
fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat; |
|
fp->obj.c_ofs = dj.blk_ofs; |
|
fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Get object allocation info */ |
|
fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize); |
|
fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2; |
|
} else |
|
#endif |
|
{ |
|
fp->obj.sclust = ld_clust(fs, dj.dir); /* Get object allocation info */ |
|
fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize); |
|
} |
|
#if _USE_FASTSEEK |
|
fp->cltbl = 0; /* Disable fast seek mode */ |
|
#endif |
|
fp->obj.fs = fs; /* Validate the file object */ |
|
fp->obj.id = fs->id; |
|
fp->flag = mode; /* Set file access mode */ |
|
fp->err = 0; /* Clear error flag */ |
|
fp->sect = 0; /* Invalidate current data sector */ |
|
fp->fptr = 0; /* Set file pointer top of the file */ |
|
#if !_FS_READONLY |
|
#if !_FS_TINY |
|
mem_set(fp->buf, 0, _MAX_SS); /* Clear sector buffer */ |
|
#endif |
|
if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) { /* Seek to end of file if FA_OPEN_APPEND is specified */ |
|
fp->fptr = fp->obj.objsize; /* Offset to seek */ |
|
bcs = (DWORD)fs->csize * SS(fs); /* Cluster size in byte */ |
|
clst = fp->obj.sclust; /* Follow the cluster chain */ |
|
for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) { |
|
clst = get_fat(&fp->obj, clst); |
|
if (clst <= 1) res = FR_INT_ERR; |
|
if (clst == 0xFFFFFFFF) res = FR_DISK_ERR; |
|
} |
|
fp->clust = clst; |
|
if (res == FR_OK && ofs % SS(fs)) { /* Fill sector buffer if not on the sector boundary */ |
|
if ((sc = clust2sect(fs, clst)) == 0) { |
|
res = FR_INT_ERR; |
|
} else { |
|
fp->sect = sc + (DWORD)(ofs / SS(fs)); |
|
#if !_FS_TINY |
|
if (disk_read(fs->drv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR; |
|
#endif |
|
} |
|
} |
|
} |
|
#endif |
|
} |
|
|
|
FREE_NAMBUF(); |
|
} |
|
|
|
if (res != FR_OK) fp->obj.fs = 0; /* Invalidate file object on error */ |
|
|
|
LEAVE_FF(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; |
|
FATFS *fs; |
|
DWORD clst, sect; |
|
FSIZE_t remain; |
|
UINT rcnt, cc, csect; |
|
BYTE *rbuff = (BYTE*)buff; |
|
|
|
|
|
*br = 0; /* Clear read byte counter */ |
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */ |
|
if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */ |
|
if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */ |
|
remain = fp->obj.objsize - 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(fs) == 0) { /* On the sector boundary? */ |
|
csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */ |
|
if (csect == 0) { /* On the cluster boundary? */ |
|
if (fp->fptr == 0) { /* On the top of the file? */ |
|
clst = fp->obj.sclust; /* Follow cluster chain 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->obj, fp->clust); /* Follow cluster chain on the FAT */ |
|
} |
|
} |
|
if (clst < 2) ABORT(fs, FR_INT_ERR); |
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); |
|
fp->clust = clst; /* Update current cluster */ |
|
} |
|
sect = clust2sect(fs, fp->clust); /* Get current sector */ |
|
if (!sect) ABORT(fs, FR_INT_ERR); |
|
sect += csect; |
|
cc = btr / SS(fs); /* When remaining bytes >= sector size, */ |
|
if (cc) { /* Read maximum contiguous sectors directly */ |
|
if (csect + cc > fs->csize) { /* Clip at cluster boundary */ |
|
cc = fs->csize - csect; |
|
} |
|
if (disk_read(fs->drv, rbuff, sect, cc) != RES_OK) ABORT(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 (fs->wflag && fs->winsect - sect < cc) { |
|
mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs)); |
|
} |
|
#else |
|
if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) { |
|
mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs)); |
|
} |
|
#endif |
|
#endif |
|
rcnt = SS(fs) * cc; /* Number of bytes transferred */ |
|
continue; |
|
} |
|
#if !_FS_TINY |
|
if (fp->sect != sect) { /* Load data sector if not in cache */ |
|
#if !_FS_READONLY |
|
if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */ |
|
if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); |
|
fp->flag &= (BYTE)~FA_DIRTY; |
|
} |
|
#endif |
|
if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */ |
|
} |
|
#endif |
|
fp->sect = sect; |
|
} |
|
rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */ |
|
if (rcnt > btr) rcnt = btr; /* Clip it by btr if needed */ |
|
#if _FS_TINY |
|
if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */ |
|
mem_cpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt); /* Extract partial sector */ |
|
#else |
|
mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt); /* Extract partial sector */ |
|
#endif |
|
} |
|
|
|
LEAVE_FF(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; |
|
FATFS *fs; |
|
DWORD clst, sect; |
|
UINT wcnt, cc, csect; |
|
const BYTE *wbuff = (const BYTE*)buff; |
|
|
|
|
|
*bw = 0; /* Clear write byte counter */ |
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */ |
|
if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); /* Check validity */ |
|
if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */ |
|
|
|
/* Check fptr wrap-around (file size cannot reach 4GiB on FATxx) */ |
|
if ((!_FS_EXFAT || fs->fs_type != FS_EXFAT) && (DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) { |
|
btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr); |
|
} |
|
|
|
for ( ; btw; /* Repeat until all data written */ |
|
wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize, *bw += wcnt, btw -= wcnt) { |
|
if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */ |
|
csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1); /* Sector offset in the cluster */ |
|
if (csect == 0) { /* On the cluster boundary? */ |
|
if (fp->fptr == 0) { /* On the top of the file? */ |
|
clst = fp->obj.sclust; /* Follow from the origin */ |
|
if (clst == 0) { /* If no cluster is allocated, */ |
|
clst = create_chain(&fp->obj, 0); /* create a new cluster chain */ |
|
} |
|
} else { /* On the 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->obj, 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(fs, FR_INT_ERR); |
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); |
|
fp->clust = clst; /* Update current cluster */ |
|
if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */ |
|
} |
|
#if _FS_TINY |
|
if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Write-back sector cache */ |
|
#else |
|
if (fp->flag & FA_DIRTY) { /* Write-back sector cache */ |
|
if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); |
|
fp->flag &= (BYTE)~FA_DIRTY; |
|
} |
|
#endif |
|
sect = clust2sect(fs, fp->clust); /* Get current sector */ |
|
if (!sect) ABORT(fs, FR_INT_ERR); |
|
sect += csect; |
|
cc = btw / SS(fs); /* When remaining bytes >= sector size, */ |
|
if (cc) { /* Write maximum contiguous sectors directly */ |
|
if (csect + cc > fs->csize) { /* Clip at cluster boundary */ |
|
cc = fs->csize - csect; |
|
} |
|
if (disk_write(fs->drv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR); |
|
#if _FS_MINIMIZE <= 2 |
|
#if _FS_TINY |
|
if (fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ |
|
mem_cpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs)); |
|
fs->wflag = 0; |
|
} |
|
#else |
|
if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */ |
|
mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs)); |
|
fp->flag &= (BYTE)~FA_DIRTY; |
|
} |
|
#endif |
|
#endif |
|
wcnt = SS(fs) * cc; /* Number of bytes transferred */ |
|
continue; |
|
} |
|
#if _FS_TINY |
|
if (fp->fptr >= fp->obj.objsize) { /* Avoid silly cache filling on the growing edge */ |
|
if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR); |
|
fs->winsect = sect; |
|
} |
|
#else |
|
if (fp->sect != sect && /* Fill sector cache with file data */ |
|
fp->fptr < fp->obj.objsize && |
|
disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) { |
|
ABORT(fs, FR_DISK_ERR); |
|
} |
|
#endif |
|
fp->sect = sect; |
|
} |
|
wcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */ |
|
if (wcnt > btw) wcnt = btw; /* Clip it by btw if needed */ |
|
#if _FS_TINY |
|
if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */ |
|
mem_cpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */ |
|
fs->wflag = 1; |
|
#else |
|
mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt); /* Fit data to the sector */ |
|
fp->flag |= FA_DIRTY; |
|
#endif |
|
} |
|
|
|
fp->flag |= FA_MODIFIED; /* Set file change flag */ |
|
|
|
LEAVE_FF(fs, FR_OK); |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Synchronize the File */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_sync ( |
|
FIL* fp /* Pointer to the file object */ |
|
) |
|
{ |
|
FRESULT res; |
|
FATFS *fs; |
|
DWORD tm; |
|
BYTE *dir; |
|
#if _FS_EXFAT |
|
DIR dj; |
|
DEF_NAMBUF |
|
#endif |
|
|
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */ |
|
if (res == FR_OK) { |
|
if (fp->flag & FA_MODIFIED) { /* Is there any change to the file? */ |
|
#if !_FS_TINY |
|
if (fp->flag & FA_DIRTY) { /* Write-back cached data if needed */ |
|
if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR); |
|
fp->flag &= (BYTE)~FA_DIRTY; |
|
} |
|
#endif |
|
/* Update the directory entry */ |
|
tm = GET_FATTIME(); /* Modified time */ |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
res = fill_first_frag(&fp->obj); /* Fill first fragment on the FAT if needed */ |
|
if (res == FR_OK) { |
|
res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */ |
|
} |
|
if (res == FR_OK) { |
|
INIT_NAMBUF(fs); |
|
res = load_obj_dir(&dj, &fp->obj); /* Load directory entry block */ |
|
if (res == FR_OK) { |
|
fs->dirbuf[XDIR_Attr] |= AM_ARC; /* Set archive bit */ |
|
fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1; /* Update file allocation info */ |
|
st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust); |
|
st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize); |
|
st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize); |
|
st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Update modified time */ |
|
fs->dirbuf[XDIR_ModTime10] = 0; |
|
st_dword(fs->dirbuf + XDIR_AccTime, 0); |
|
res = store_xdir(&dj); /* Restore it to the directory */ |
|
if (res == FR_OK) { |
|
res = sync_fs(fs); |
|
fp->flag &= (BYTE)~FA_MODIFIED; |
|
} |
|
} |
|
FREE_NAMBUF(); |
|
} |
|
} else |
|
#endif |
|
{ |
|
res = move_window(fs, fp->dir_sect); |
|
if (res == FR_OK) { |
|
dir = fp->dir_ptr; |
|
dir[DIR_Attr] |= AM_ARC; /* Set archive bit */ |
|
st_clust(fp->obj.fs, dir, fp->obj.sclust); /* Update file allocation info */ |
|
st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize); /* Update file size */ |
|
st_dword(dir + DIR_ModTime, tm); /* Update modified time */ |
|
st_word(dir + DIR_LstAccDate, 0); |
|
fs->wflag = 1; |
|
res = sync_fs(fs); /* Restore it to the directory */ |
|
fp->flag &= (BYTE)~FA_MODIFIED; |
|
} |
|
} |
|
} |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Close File */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_close ( |
|
FIL* fp /* Pointer to the file object to be closed */ |
|
) |
|
{ |
|
FRESULT res; |
|
FATFS *fs; |
|
|
|
#if !_FS_READONLY |
|
res = f_sync(fp); /* Flush cached data */ |
|
if (res == FR_OK) |
|
#endif |
|
{ |
|
res = validate(&fp->obj, &fs); /* Lock volume */ |
|
if (res == FR_OK) { |
|
#if _FS_LOCK != 0 |
|
res = dec_lock(fp->obj.lockid); /* Decrement file open counter */ |
|
if (res == FR_OK) |
|
#endif |
|
{ |
|
fp->obj.fs = 0; /* Invalidate file object */ |
|
} |
|
#if _FS_REENTRANT |
|
unlock_fs(fs, FR_OK); /* Unlock volume */ |
|
#endif |
|
} |
|
} |
|
return res; |
|
} |
|
|
|
|
|
|
|
|
|
#if _FS_RPATH >= 1 |
|
/*-----------------------------------------------------------------------*/ |
|
/* Change Current Directory or Current Drive, Get Current Directory */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
#if _VOLUMES >= 2 |
|
FRESULT f_chdrive ( |
|
const TCHAR* path /* Drive number */ |
|
) |
|
{ |
|
int vol; |
|
|
|
|
|
/* Get logical drive number */ |
|
vol = get_ldnumber(&path); |
|
if (vol < 0) return FR_INVALID_DRIVE; |
|
|
|
CurrVol = (BYTE)vol; /* Set it as current volume */ |
|
|
|
return FR_OK; |
|
} |
|
#endif |
|
|
|
|
|
FRESULT f_chdir ( |
|
const TCHAR* path /* Pointer to the directory path */ |
|
) |
|
{ |
|
FRESULT res; |
|
DIR dj; |
|
FATFS *fs; |
|
DEF_NAMBUF |
|
|
|
/* Get logical drive */ |
|
res = find_volume(&path, &fs, 0); |
|
if (res == FR_OK) { |
|
dj.obj.fs = fs; |
|
INIT_NAMBUF(fs); |
|
res = follow_path(&dj, path); /* Follow the path */ |
|
if (res == FR_OK) { /* Follow completed */ |
|
if (dj.fn[NSFLAG] & NS_NONAME) { |
|
fs->cdir = dj.obj.sclust; /* It is the start directory itself */ |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
fs->cdc_scl = dj.obj.c_scl; |
|
fs->cdc_size = dj.obj.c_size; |
|
fs->cdc_ofs = dj.obj.c_ofs; |
|
} |
|
#endif |
|
} else { |
|
if (dj.obj.attr & AM_DIR) { /* It is a sub-directory */ |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus); /* Sub-directory cluster */ |
|
fs->cdc_scl = dj.obj.sclust; /* Save containing directory information */ |
|
fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat; |
|
fs->cdc_ofs = dj.blk_ofs; |
|
} else |
|
#endif |
|
{ |
|
fs->cdir = ld_clust(fs, dj.dir); /* Sub-directory cluster */ |
|
} |
|
} else { |
|
res = FR_NO_PATH; /* Reached but a file */ |
|
} |
|
} |
|
} |
|
FREE_NAMBUF(); |
|
if (res == FR_NO_FILE) res = FR_NO_PATH; |
|
} |
|
|
|
LEAVE_FF(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; |
|
FATFS *fs; |
|
UINT i, n; |
|
DWORD ccl; |
|
TCHAR *tp; |
|
FILINFO fno; |
|
DEF_NAMBUF |
|
|
|
|
|
*buff = 0; |
|
/* Get logical drive */ |
|
res = find_volume((const TCHAR**)&buff, &fs, 0); /* Get current volume */ |
|
if (res == FR_OK) { |
|
dj.obj.fs = fs; |
|
INIT_NAMBUF(fs); |
|
i = len; /* Bottom of buffer (directory stack base) */ |
|
if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) { /* (Cannot do getcwd on exFAT and returns root path) */ |
|
dj.obj.sclust = fs->cdir; /* Start to follow upper directory from current directory */ |
|
while ((ccl = dj.obj.sclust) != 0) { /* Repeat while current directory is a sub-directory */ |
|
res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */ |
|
if (res != FR_OK) break; |
|
res = move_window(fs, dj.sect); |
|
if (res != FR_OK) break; |
|
dj.obj.sclust = ld_clust(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(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; |
|
get_fileinfo(&dj, &fno); /* Get the directory name and push it to the buffer */ |
|
for (n = 0; fno.fname[n]; n++) ; |
|
if (i < n + 3) { |
|
res = FR_NOT_ENOUGH_CORE; break; |
|
} |
|
while (n) buff[--i] = fno.fname[--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_NAMBUF(); |
|
} |
|
|
|
LEAVE_FF(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 */ |
|
FSIZE_t ofs /* File pointer from top of file */ |
|
) |
|
{ |
|
FRESULT res; |
|
FATFS *fs; |
|
DWORD clst, bcs, nsect; |
|
FSIZE_t ifptr; |
|
#if _USE_FASTSEEK |
|
DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl; |
|
#endif |
|
|
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */ |
|
if (res == FR_OK) res = (FRESULT)fp->err; |
|
#if _FS_EXFAT && !_FS_READONLY |
|
if (res == FR_OK && fs->fs_type == FS_EXFAT) { |
|
res = fill_last_frag(&fp->obj, fp->clust, 0xFFFFFFFF); /* Fill last fragment on the FAT if needed */ |
|
} |
|
#endif |
|
if (res != FR_OK) LEAVE_FF(fs, res); |
|
|
|
#if _USE_FASTSEEK |
|
if (fp->cltbl) { /* Fast seek */ |
|
if (ofs == CREATE_LINKMAP) { /* Create CLMT */ |
|
tbl = fp->cltbl; |
|
tlen = *tbl++; ulen = 2; /* Given table size and required table size */ |
|
cl = fp->obj.sclust; /* Origin 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->obj, cl); |
|
if (cl <= 1) ABORT(fs, FR_INT_ERR); |
|
if (cl == 0xFFFFFFFF) ABORT(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 < 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->obj.objsize) ofs = fp->obj.objsize; /* Clip offset at the file size */ |
|
fp->fptr = ofs; /* Set file pointer */ |
|
if (ofs) { |
|
fp->clust = clmt_clust(fp, ofs - 1); |
|
dsc = clust2sect(fs, fp->clust); |
|
if (!dsc) ABORT(fs, FR_INT_ERR); |
|
dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1); |
|
if (fp->fptr % SS(fs) && dsc != fp->sect) { /* Refill sector cache if needed */ |
|
#if !_FS_TINY |
|
#if !_FS_READONLY |
|
if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */ |
|
if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); |
|
fp->flag &= (BYTE)~FA_DIRTY; |
|
} |
|
#endif |
|
if (disk_read(fs->drv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Load current sector */ |
|
#endif |
|
fp->sect = dsc; |
|
} |
|
} |
|
} |
|
} else |
|
#endif |
|
|
|
/* Normal Seek */ |
|
{ |
|
#if _FS_EXFAT |
|
if (fs->fs_type != FS_EXFAT && ofs >= 0x100000000) ofs = 0xFFFFFFFF; /* Clip at 4GiB-1 if at FATxx */ |
|
#endif |
|
if (ofs > fp->obj.objsize && (_FS_READONLY || !(fp->flag & FA_WRITE))) { /* In read-only mode, clip offset with the file size */ |
|
ofs = fp->obj.objsize; |
|
} |
|
ifptr = fp->fptr; |
|
fp->fptr = nsect = 0; |
|
if (ofs) { |
|
bcs = (DWORD)fs->csize * SS(fs); /* Cluster size (byte) */ |
|
if (ifptr > 0 && |
|
(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */ |
|
fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1); /* start from the current cluster */ |
|
ofs -= fp->fptr; |
|
clst = fp->clust; |
|
} else { /* When seek to back cluster, */ |
|
clst = fp->obj.sclust; /* start from the first cluster */ |
|
#if !_FS_READONLY |
|
if (clst == 0) { /* If no cluster chain, create a new chain */ |
|
clst = create_chain(&fp->obj, 0); |
|
if (clst == 1) ABORT(fs, FR_INT_ERR); |
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); |
|
fp->obj.sclust = clst; |
|
} |
|
#endif |
|
fp->clust = clst; |
|
} |
|
if (clst != 0) { |
|
while (ofs > bcs) { /* Cluster following loop */ |
|
ofs -= bcs; fp->fptr += bcs; |
|
#if !_FS_READONLY |
|
if (fp->flag & FA_WRITE) { /* Check if in write mode or not */ |
|
if (_FS_EXFAT && fp->fptr > fp->obj.objsize) { /* No FAT chain object needs correct objsize to generate FAT value */ |
|
fp->obj.objsize = fp->fptr; |
|
fp->flag |= FA_MODIFIED; |
|
} |
|
clst = create_chain(&fp->obj, clst); /* Follow chain with forceed stretch */ |
|
if (clst == 0) { /* Clip file size in case of disk full */ |
|
ofs = 0; break; |
|
} |
|
} else |
|
#endif |
|
{ |
|
clst = get_fat(&fp->obj, clst); /* Follow cluster chain if not in write mode */ |
|
} |
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); |
|
if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR); |
|
fp->clust = clst; |
|
} |
|
fp->fptr += ofs; |
|
if (ofs % SS(fs)) { |
|
nsect = clust2sect(fs, clst); /* Current sector */ |
|
if (!nsect) ABORT(fs, FR_INT_ERR); |
|
nsect += (DWORD)(ofs / SS(fs)); |
|
} |
|
} |
|
} |
|
if (!_FS_READONLY && fp->fptr > fp->obj.objsize) { /* Set file change flag if the file size is extended */ |
|
fp->obj.objsize = fp->fptr; |
|
fp->flag |= FA_MODIFIED; |
|
} |
|
if (fp->fptr % SS(fs) && nsect != fp->sect) { /* Fill sector cache if needed */ |
|
#if !_FS_TINY |
|
#if !_FS_READONLY |
|
if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */ |
|
if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); |
|
fp->flag &= (BYTE)~FA_DIRTY; |
|
} |
|
#endif |
|
if (disk_read(fs->drv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */ |
|
#endif |
|
fp->sect = nsect; |
|
} |
|
} |
|
|
|
LEAVE_FF(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; |
|
_FDID *obj; |
|
DEF_NAMBUF |
|
|
|
|
|
if (!dp) return FR_INVALID_OBJECT; |
|
|
|
/* Get logical drive */ |
|
obj = &dp->obj; |
|
res = find_volume(&path, &fs, 0); |
|
if (res == FR_OK) { |
|
obj->fs = fs; |
|
INIT_NAMBUF(fs); |
|
res = follow_path(dp, path); /* Follow the path to the directory */ |
|
if (res == FR_OK) { /* Follow completed */ |
|
if (!(dp->fn[NSFLAG] & NS_NONAME)) { /* It is not the origin directory itself */ |
|
if (obj->attr & AM_DIR) { /* This object is a sub-directory */ |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
obj->c_scl = obj->sclust; /* Get containing directory inforamation */ |
|
obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat; |
|
obj->c_ofs = dp->blk_ofs; |
|
obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus); /* Get object allocation info */ |
|
obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize); |
|
obj->stat = fs->dirbuf[XDIR_GenFlags] & 2; |
|
} else |
|
#endif |
|
{ |
|
obj->sclust = ld_clust(fs, dp->dir); /* Get object allocation info */ |
|
} |
|
} else { /* This object is a file */ |
|
res = FR_NO_PATH; |
|
} |
|
} |
|
if (res == FR_OK) { |
|
obj->id = fs->id; |
|
res = dir_sdi(dp, 0); /* Rewind directory */ |
|
#if _FS_LOCK != 0 |
|
if (res == FR_OK) { |
|
if (obj->sclust) { |
|
obj->lockid = inc_lock(dp, 0); /* Lock the sub directory */ |
|
if (!obj->lockid) res = FR_TOO_MANY_OPEN_FILES; |
|
} else { |
|
obj->lockid = 0; /* Root directory need not to be locked */ |
|
} |
|
} |
|
#endif |
|
} |
|
} |
|
FREE_NAMBUF(); |
|
if (res == FR_NO_FILE) res = FR_NO_PATH; |
|
} |
|
if (res != FR_OK) obj->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; |
|
FATFS *fs; |
|
|
|
|
|
res = validate(&dp->obj, &fs); /* Check validity of the file object */ |
|
if (res == FR_OK) { |
|
#if _FS_LOCK != 0 |
|
if (dp->obj.lockid) { /* Decrement sub-directory open counter */ |
|
res = dec_lock(dp->obj.lockid); |
|
} |
|
if (res == FR_OK) |
|
#endif |
|
{ |
|
dp->obj.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; |
|
FATFS *fs; |
|
DEF_NAMBUF |
|
|
|
|
|
res = validate(&dp->obj, &fs); /* Check validity of the directory object */ |
|
if (res == FR_OK) { |
|
if (!fno) { |
|
res = dir_sdi(dp, 0); /* Rewind the directory object */ |
|
} else { |
|
INIT_NAMBUF(fs); |
|
res = dir_read(dp, 0); /* Read an item */ |
|
if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory */ |
|
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) res = FR_OK; /* Ignore end of directory now */ |
|
} |
|
FREE_NAMBUF(); |
|
} |
|
} |
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
|
|
|
|
#if _USE_FIND |
|
/*-----------------------------------------------------------------------*/ |
|
/* Find Next File */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_findnext ( |
|
DIR* dp, /* Pointer to the open directory object */ |
|
FILINFO* fno /* Pointer to the file information structure */ |
|
) |
|
{ |
|
FRESULT res; |
|
|
|
|
|
for (;;) { |
|
res = f_readdir(dp, fno); /* Get a directory item */ |
|
if (res != FR_OK || !fno || !fno->fname[0]) break; /* Terminate if any error or end of directory */ |
|
if (pattern_matching(dp->pat, fno->fname, 0, 0)) break; /* Test for the file name */ |
|
#if _USE_LFN != 0 && _USE_FIND == 2 |
|
if (pattern_matching(dp->pat, fno->altname, 0, 0)) break; /* Test for alternative name if exist */ |
|
#endif |
|
} |
|
return res; |
|
} |
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Find First File */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_findfirst ( |
|
DIR* dp, /* Pointer to the blank directory object */ |
|
FILINFO* fno, /* Pointer to the file information structure */ |
|
const TCHAR* path, /* Pointer to the directory to open */ |
|
const TCHAR* pattern /* Pointer to the matching pattern */ |
|
) |
|
{ |
|
FRESULT res; |
|
|
|
|
|
dp->pat = pattern; /* Save pointer to pattern string */ |
|
res = f_opendir(dp, path); /* Open the target directory */ |
|
if (res == FR_OK) { |
|
res = f_findnext(dp, fno); /* Find the first item */ |
|
} |
|
return res; |
|
} |
|
|
|
#endif /* _USE_FIND */ |
|
|
|
|
|
|
|
#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_NAMBUF |
|
|
|
|
|
/* Get logical drive */ |
|
res = find_volume(&path, &dj.obj.fs, 0); |
|
if (res == FR_OK) { |
|
INIT_NAMBUF(dj.obj.fs); |
|
res = follow_path(&dj, path); /* Follow the file path */ |
|
if (res == FR_OK) { /* Follow completed */ |
|
if (dj.fn[NSFLAG] & NS_NONAME) { /* It is origin directory */ |
|
res = FR_INVALID_NAME; |
|
} else { /* Found an object */ |
|
if (fno) get_fileinfo(&dj, fno); |
|
} |
|
} |
|
FREE_NAMBUF(); |
|
} |
|
|
|
LEAVE_FF(dj.obj.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 nfree, clst, sect, stat; |
|
UINT i; |
|
BYTE *p; |
|
_FDID obj; |
|
|
|
|
|
/* Get logical drive */ |
|
res = find_volume(&path, &fs, 0); |
|
if (res == FR_OK) { |
|
*fatfs = fs; /* Return ptr to the fs object */ |
|
/* If free_clst is valid, return it without full cluster scan */ |
|
if (fs->free_clst <= fs->n_fatent - 2) { |
|
*nclst = fs->free_clst; |
|
} else { |
|
/* Get number of free clusters */ |
|
nfree = 0; |
|
if (fs->fs_type == FS_FAT12) { /* FAT12: Sector unalighed FAT entries */ |
|
clst = 2; obj.fs = fs; |
|
do { |
|
stat = get_fat(&obj, clst); |
|
if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } |
|
if (stat == 1) { res = FR_INT_ERR; break; } |
|
if (stat == 0) nfree++; |
|
} while (++clst < fs->n_fatent); |
|
} else { |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* exFAT: Scan bitmap table */ |
|
BYTE bm; |
|
UINT b; |
|
|
|
clst = fs->n_fatent - 2; |
|
sect = fs->database; |
|
i = 0; |
|
do { |
|
if (i == 0 && (res = move_window(fs, sect++)) != FR_OK) break; |
|
for (b = 8, bm = fs->win[i]; b && clst; b--, clst--) { |
|
if (!(bm & 1)) nfree++; |
|
bm >>= 1; |
|
} |
|
i = (i + 1) % SS(fs); |
|
} while (clst); |
|
} else |
|
#endif |
|
{ /* FAT16/32: Sector alighed FAT entries */ |
|
clst = fs->n_fatent; sect = fs->fatbase; |
|
i = 0; p = 0; |
|
do { |
|
if (i == 0) { |
|
res = move_window(fs, sect++); |
|
if (res != FR_OK) break; |
|
p = fs->win; |
|
i = SS(fs); |
|
} |
|
if (fs->fs_type == FS_FAT16) { |
|
if (ld_word(p) == 0) nfree++; |
|
p += 2; i -= 2; |
|
} else { |
|
if ((ld_dword(p) & 0x0FFFFFFF) == 0) nfree++; |
|
p += 4; i -= 4; |
|
} |
|
} while (--clst); |
|
} |
|
} |
|
*nclst = nfree; /* Return the free clusters */ |
|
fs->free_clst = nfree; /* Now free_clst is valid */ |
|
fs->fsi_flag |= 1; /* FSInfo is to be updated */ |
|
} |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Truncate File */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_truncate ( |
|
FIL* fp /* Pointer to the file object */ |
|
) |
|
{ |
|
FRESULT res; |
|
FATFS *fs; |
|
DWORD ncl; |
|
|
|
|
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */ |
|
if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); |
|
if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */ |
|
|
|
if (fp->fptr < fp->obj.objsize) { /* Process when fptr is not on the eof */ |
|
if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */ |
|
res = remove_chain(&fp->obj, fp->obj.sclust, 0); |
|
fp->obj.sclust = 0; |
|
} else { /* When truncate a part of the file, remove remaining clusters */ |
|
ncl = get_fat(&fp->obj, fp->clust); |
|
res = FR_OK; |
|
if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR; |
|
if (ncl == 1) res = FR_INT_ERR; |
|
if (res == FR_OK && ncl < fs->n_fatent) { |
|
res = remove_chain(&fp->obj, ncl, fp->clust); |
|
} |
|
} |
|
fp->obj.objsize = fp->fptr; /* Set file size to current R/W point */ |
|
fp->flag |= FA_MODIFIED; |
|
#if !_FS_TINY |
|
if (res == FR_OK && (fp->flag & FA_DIRTY)) { |
|
if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) { |
|
res = FR_DISK_ERR; |
|
} else { |
|
fp->flag &= (BYTE)~FA_DIRTY; |
|
} |
|
} |
|
#endif |
|
if (res != FR_OK) ABORT(fs, res); |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Delete a File/Directory */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_unlink ( |
|
const TCHAR* path /* Pointer to the file or directory path */ |
|
) |
|
{ |
|
FRESULT res; |
|
DIR dj, sdj; |
|
DWORD dclst = 0; |
|
FATFS *fs; |
|
#if _FS_EXFAT |
|
_FDID obj; |
|
#endif |
|
DEF_NAMBUF |
|
|
|
|
|
/* Get logical drive */ |
|
res = find_volume(&path, &fs, FA_WRITE); |
|
dj.obj.fs = fs; |
|
if (res == FR_OK) { |
|
INIT_NAMBUF(fs); |
|
res = follow_path(&dj, path); /* Follow the file path */ |
|
if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT)) { |
|
res = FR_INVALID_NAME; /* Cannot remove dot entry */ |
|
} |
|
#if _FS_LOCK != 0 |
|
if (res == FR_OK) res = chk_lock(&dj, 2); /* Check if it is an open object */ |
|
#endif |
|
if (res == FR_OK) { /* The object is accessible */ |
|
if (dj.fn[NSFLAG] & NS_NONAME) { |
|
res = FR_INVALID_NAME; /* Cannot remove the origin directory */ |
|
} else { |
|
if (dj.obj.attr & AM_RDO) { |
|
res = FR_DENIED; /* Cannot remove R/O object */ |
|
} |
|
} |
|
if (res == FR_OK) { |
|
#if _FS_EXFAT |
|
obj.fs = fs; |
|
if (fs->fs_type == FS_EXFAT) { |
|
obj.sclust = dclst = ld_dword(fs->dirbuf + XDIR_FstClus); |
|
obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize); |
|
obj.stat = fs->dirbuf[XDIR_GenFlags] & 2; |
|
} else |
|
#endif |
|
{ |
|
dclst = ld_clust(fs, dj.dir); |
|
} |
|
if (dj.obj.attr & AM_DIR) { /* Is it a sub-directory? */ |
|
#if _FS_RPATH != 0 |
|
if (dclst == fs->cdir) { /* Is it the current directory? */ |
|
res = FR_DENIED; |
|
} else |
|
#endif |
|
{ |
|
sdj.obj.fs = fs; /* Open the sub-directory */ |
|
sdj.obj.sclust = dclst; |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
sdj.obj.objsize = obj.objsize; |
|
sdj.obj.stat = obj.stat; |
|
} |
|
#endif |
|
res = dir_sdi(&sdj, 0); |
|
if (res == FR_OK) { |
|
res = dir_read(&sdj, 0); /* Read an item */ |
|
if (res == FR_OK) res = FR_DENIED; /* Not empty? */ |
|
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 && dclst) { /* Remove the cluster chain if exist */ |
|
#if _FS_EXFAT |
|
res = remove_chain(&obj, dclst, 0); |
|
#else |
|
res = remove_chain(&dj.obj, dclst, 0); |
|
#endif |
|
} |
|
if (res == FR_OK) res = sync_fs(fs); |
|
} |
|
} |
|
FREE_NAMBUF(); |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Create a Directory */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_mkdir ( |
|
const TCHAR* path /* Pointer to the directory path */ |
|
) |
|
{ |
|
FRESULT res; |
|
DIR dj; |
|
FATFS *fs; |
|
BYTE *dir; |
|
UINT n; |
|
DWORD dsc, dcl, pcl, tm; |
|
DEF_NAMBUF |
|
|
|
|
|
/* Get logical drive */ |
|
res = find_volume(&path, &fs, FA_WRITE); |
|
dj.obj.fs = fs; |
|
if (res == FR_OK) { |
|
INIT_NAMBUF(fs); |
|
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[NSFLAG] & NS_DOT)) { |
|
res = FR_INVALID_NAME; |
|
} |
|
if (res == FR_NO_FILE) { /* Can create a new directory */ |
|
dcl = create_chain(&dj.obj, 0); /* Allocate a cluster for the new directory table */ |
|
dj.obj.objsize = (DWORD)fs->csize * SS(fs); |
|
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) res = sync_window(fs); /* Flush FAT */ |
|
tm = GET_FATTIME(); |
|
if (res == FR_OK) { /* Initialize the new directory table */ |
|
dsc = clust2sect(fs, dcl); |
|
dir = fs->win; |
|
mem_set(dir, 0, SS(fs)); |
|
if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) { |
|
mem_set(dir + DIR_Name, ' ', 11); /* Create "." entry */ |
|
dir[DIR_Name] = '.'; |
|
dir[DIR_Attr] = AM_DIR; |
|
st_dword(dir + DIR_ModTime, tm); |
|
st_clust(fs, dir, dcl); |
|
mem_cpy(dir + SZDIRE, dir, SZDIRE); /* Create ".." entry */ |
|
dir[SZDIRE + 1] = '.'; pcl = dj.obj.sclust; |
|
if (fs->fs_type == FS_FAT32 && pcl == fs->dirbase) pcl = 0; |
|
st_clust(fs, dir + SZDIRE, pcl); |
|
} |
|
for (n = fs->csize; n; n--) { /* Write dot entries and clear following sectors */ |
|
fs->winsect = dsc++; |
|
fs->wflag = 1; |
|
res = sync_window(fs); |
|
if (res != FR_OK) break; |
|
mem_set(dir, 0, SS(fs)); |
|
} |
|
} |
|
if (res == FR_OK) { |
|
res = dir_register(&dj); /* Register the object to the directoy */ |
|
} |
|
if (res == FR_OK) { |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* Initialize directory entry block */ |
|
st_dword(fs->dirbuf + XDIR_ModTime, tm); /* Created time */ |
|
st_dword(fs->dirbuf + XDIR_FstClus, dcl); /* Table start cluster */ |
|
st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)dj.obj.objsize); /* File size needs to be valid */ |
|
st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)dj.obj.objsize); |
|
fs->dirbuf[XDIR_GenFlags] = 3; /* Initialize the object flag (contiguous) */ |
|
fs->dirbuf[XDIR_Attr] = AM_DIR; /* Attribute */ |
|
res = store_xdir(&dj); |
|
} else |
|
#endif |
|
{ |
|
dir = dj.dir; |
|
st_dword(dir + DIR_ModTime, tm); /* Created time */ |
|
st_clust(fs, dir, dcl); /* Table start cluster */ |
|
dir[DIR_Attr] = AM_DIR; /* Attribute */ |
|
fs->wflag = 1; |
|
} |
|
if (res == FR_OK) { |
|
res = sync_fs(fs); |
|
} |
|
} else { |
|
remove_chain(&dj.obj, dcl, 0); /* Could not register, remove cluster chain */ |
|
} |
|
} |
|
FREE_NAMBUF(); |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* Rename a File/Directory */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_rename ( |
|
const TCHAR* path_old, /* Pointer to the object name to be renamed */ |
|
const TCHAR* path_new /* Pointer to the new name */ |
|
) |
|
{ |
|
FRESULT res; |
|
DIR djo, djn; |
|
FATFS *fs; |
|
BYTE buf[_FS_EXFAT ? SZDIRE * 2 : 24], *dir; |
|
DWORD dw; |
|
DEF_NAMBUF |
|
|
|
|
|
get_ldnumber(&path_new); /* Snip drive number of new name off */ |
|
res = find_volume(&path_old, &fs, FA_WRITE); /* Get logical drive of the old object */ |
|
if (res == FR_OK) { |
|
djo.obj.fs = fs; |
|
INIT_NAMBUF(fs); |
|
res = follow_path(&djo, path_old); /* Check old object */ |
|
if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check validity of name */ |
|
#if _FS_LOCK != 0 |
|
if (res == FR_OK) { |
|
res = chk_lock(&djo, 2); |
|
} |
|
#endif |
|
if (res == FR_OK) { /* Object to be renamed is found */ |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* At exFAT */ |
|
BYTE nf, nn; |
|
WORD nh; |
|
|
|
mem_cpy(buf, fs->dirbuf, SZDIRE * 2); /* Save 85+C0 entry of old object */ |
|
mem_cpy(&djn, &djo, sizeof djo); |
|
res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */ |
|
if (res == FR_OK) { /* Is new name already in use by any other object? */ |
|
res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST; |
|
} |
|
if (res == FR_NO_FILE) { /* It is a valid path and no name collision */ |
|
res = dir_register(&djn); /* Register the new entry */ |
|
if (res == FR_OK) { |
|
nf = fs->dirbuf[XDIR_NumSec]; nn = fs->dirbuf[XDIR_NumName]; |
|
nh = ld_word(fs->dirbuf + XDIR_NameHash); |
|
mem_cpy(fs->dirbuf, buf, SZDIRE * 2); |
|
fs->dirbuf[XDIR_NumSec] = nf; fs->dirbuf[XDIR_NumName] = nn; |
|
st_word(fs->dirbuf + XDIR_NameHash, nh); |
|
/* Start of critical section where an interruption can cause a cross-link */ |
|
res = store_xdir(&djn); |
|
} |
|
} |
|
} else |
|
#endif |
|
{ /* At FAT12/FAT16/FAT32 */ |
|
mem_cpy(buf, djo.dir + DIR_Attr, 21); /* Save information about the object except name */ |
|
mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */ |
|
res = follow_path(&djn, path_new); /* Make sure if new object name is not in use */ |
|
if (res == FR_OK) { /* Is new name already in use by any other object? */ |
|
res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST; |
|
} |
|
if (res == FR_NO_FILE) { /* It is a valid path and no name collision */ |
|
res = dir_register(&djn); /* Register the new entry */ |
|
if (res == FR_OK) { |
|
dir = djn.dir; /* Copy information about object except name */ |
|
mem_cpy(dir + 13, buf + 2, 19); |
|
dir[DIR_Attr] = buf[0] | AM_ARC; |
|
fs->wflag = 1; |
|
if ((dir[DIR_Attr] & AM_DIR) && djo.obj.sclust != djn.obj.sclust) { /* Update .. entry in the sub-directory if needed */ |
|
dw = clust2sect(fs, ld_clust(fs, dir)); |
|
if (!dw) { |
|
res = FR_INT_ERR; |
|
} else { |
|
/* Start of critical section where an interruption can cause a cross-link */ |
|
res = move_window(fs, dw); |
|
dir = fs->win + SZDIRE * 1; /* Ptr to .. entry */ |
|
if (res == FR_OK && dir[1] == '.') { |
|
st_clust(fs, dir, djn.obj.sclust); |
|
fs->wflag = 1; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
} |
|
if (res == FR_OK) { |
|
res = dir_remove(&djo); /* Remove old entry */ |
|
if (res == FR_OK) { |
|
res = sync_fs(fs); |
|
} |
|
} |
|
/* End of the critical section */ |
|
} |
|
FREE_NAMBUF(); |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
#endif /* _FS_MINIMIZE == 0 */ |
|
#endif /* _FS_MINIMIZE <= 1 */ |
|
#endif /* _FS_MINIMIZE <= 2 */ |
|
|
|
|
|
|
|
#if _USE_CHMOD && !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* Change Attribute */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_chmod ( |
|
const TCHAR* path, /* Pointer to the file path */ |
|
BYTE attr, /* Attribute bits */ |
|
BYTE mask /* Attribute mask to change */ |
|
) |
|
{ |
|
FRESULT res; |
|
DIR dj; |
|
FATFS *fs; |
|
DEF_NAMBUF |
|
|
|
|
|
res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */ |
|
dj.obj.fs = fs; |
|
if (res == FR_OK) { |
|
INIT_NAMBUF(fs); |
|
res = follow_path(&dj, path); /* Follow the file path */ |
|
if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */ |
|
if (res == FR_OK) { |
|
mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */ |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
fs->dirbuf[XDIR_Attr] = (attr & mask) | (fs->dirbuf[XDIR_Attr] & (BYTE)~mask); /* Apply attribute change */ |
|
res = store_xdir(&dj); |
|
} else |
|
#endif |
|
{ |
|
dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */ |
|
fs->wflag = 1; |
|
} |
|
if (res == FR_OK) { |
|
res = sync_fs(fs); |
|
} |
|
} |
|
FREE_NAMBUF(); |
|
} |
|
|
|
LEAVE_FF(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; |
|
FATFS *fs; |
|
DEF_NAMBUF |
|
|
|
|
|
res = find_volume(&path, &fs, FA_WRITE); /* Get logical drive */ |
|
dj.obj.fs = fs; |
|
if (res == FR_OK) { |
|
INIT_NAMBUF(fs); |
|
res = follow_path(&dj, path); /* Follow the file path */ |
|
if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check object validity */ |
|
if (res == FR_OK) { |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
st_dword(fs->dirbuf + XDIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime); |
|
res = store_xdir(&dj); |
|
} else |
|
#endif |
|
{ |
|
st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime); |
|
fs->wflag = 1; |
|
} |
|
if (res == FR_OK) { |
|
res = sync_fs(fs); |
|
} |
|
} |
|
FREE_NAMBUF(); |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
#endif /* _USE_CHMOD && !_FS_READONLY */ |
|
|
|
|
|
|
|
#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; |
|
FATFS *fs; |
|
UINT si, di; |
|
#if _LFN_UNICODE || _FS_EXFAT |
|
WCHAR w; |
|
#endif |
|
|
|
/* Get logical drive */ |
|
res = find_volume(&path, &fs, 0); |
|
|
|
/* Get volume label */ |
|
if (res == FR_OK && label) { |
|
dj.obj.fs = fs; dj.obj.sclust = 0; /* Open root directory */ |
|
res = dir_sdi(&dj, 0); |
|
if (res == FR_OK) { |
|
res = dir_read(&dj, 1); /* Find a volume label entry */ |
|
if (res == FR_OK) { |
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
for (si = di = 0; si < dj.dir[XDIR_NumLabel]; si++) { /* Extract volume label from 83 entry */ |
|
w = ld_word(dj.dir + XDIR_Label + si * 2); |
|
#if _LFN_UNICODE |
|
label[di++] = w; |
|
#else |
|
w = ff_convert(w, 0); /* Unicode -> OEM */ |
|
if (w == 0) w = '?'; /* Replace wrong character */ |
|
if (_DF1S && w >= 0x100) label[di++] = (char)(w >> 8); |
|
label[di++] = (char)w; |
|
#endif |
|
} |
|
label[di] = 0; |
|
} else |
|
#endif |
|
{ |
|
si = di = 0; /* Extract volume label from AM_VOL entry with code comversion */ |
|
do { |
|
#if _LFN_UNICODE |
|
w = (si < 11) ? dj.dir[si++] : ' '; |
|
if (IsDBCS1(w) && si < 11 && IsDBCS2(dj.dir[si])) { |
|
w = w << 8 | dj.dir[si++]; |
|
} |
|
label[di++] = ff_convert(w, 1); /* OEM -> Unicode */ |
|
#else |
|
label[di++] = dj.dir[si++]; |
|
#endif |
|
} while (di < 11); |
|
do { /* Truncate trailing spaces */ |
|
label[di] = 0; |
|
if (di == 0) break; |
|
} while (label[--di] == ' '); |
|
} |
|
} |
|
} |
|
if (res == FR_NO_FILE) { /* No label entry and return nul string */ |
|
label[0] = 0; |
|
res = FR_OK; |
|
} |
|
} |
|
|
|
/* Get volume serial number */ |
|
if (res == FR_OK && vsn) { |
|
res = move_window(fs, fs->volbase); |
|
if (res == FR_OK) { |
|
switch (fs->fs_type) { |
|
case FS_EXFAT: |
|
di = BPB_VolIDEx; break; |
|
|
|
case FS_FAT32: |
|
di = BS_VolID32; break; |
|
|
|
default: |
|
di = BS_VolID; |
|
} |
|
*vsn = ld_dword(fs->win + di); |
|
} |
|
} |
|
|
|
LEAVE_FF(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; |
|
FATFS *fs; |
|
BYTE dirvn[22]; |
|
UINT i, j, slen; |
|
WCHAR w; |
|
static const char badchr[] = "\"*+,.:;<=>\?[]|\x7F"; |
|
|
|
|
|
/* Get logical drive */ |
|
res = find_volume(&label, &fs, FA_WRITE); |
|
if (res != FR_OK) LEAVE_FF(fs, res); |
|
dj.obj.fs = fs; |
|
|
|
/* Get length of given volume label */ |
|
for (slen = 0; (UINT)label[slen] >= ' '; slen++) ; /* Get name length */ |
|
|
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */ |
|
for (i = j = 0; i < slen; ) { /* Create volume label in directory form */ |
|
w = label[i++]; |
|
#if !_LFN_UNICODE |
|
if (IsDBCS1(w)) { |
|
w = (i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0; |
|
} |
|
w = ff_convert(w, 1); |
|
#endif |
|
if (w == 0 || chk_chr(badchr, w) || j == 22) { /* Check validity check validity of the volume label */ |
|
LEAVE_FF(fs, FR_INVALID_NAME); |
|
} |
|
st_word(dirvn + j, w); j += 2; |
|
} |
|
slen = j; |
|
} else |
|
#endif |
|
{ /* On the FAT12/16/32 volume */ |
|
for ( ; slen && label[slen - 1] == ' '; slen--) ; /* Remove trailing spaces */ |
|
if (slen) { /* Is there a volume label to be set? */ |
|
dirvn[0] = 0; i = j = 0; /* Create volume label in directory form */ |
|
do { |
|
#if _LFN_UNICODE |
|
w = ff_convert(ff_wtoupper(label[i++]), 0); |
|
#else |
|
w = (BYTE)label[i++]; |
|
if (IsDBCS1(w)) { |
|
w = (j < 10 && i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0; |
|
} |
|
#if _USE_LFN != 0 |
|
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 == 0 || chk_chr(badchr, w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) { /* Reject invalid characters for volume label */ |
|
LEAVE_FF(fs, FR_INVALID_NAME); |
|
} |
|
if (w >= 0x100) dirvn[j++] = (BYTE)(w >> 8); |
|
dirvn[j++] = (BYTE)w; |
|
} while (i < slen); |
|
while (j < 11) dirvn[j++] = ' '; /* Fill remaining name field */ |
|
if (dirvn[0] == DDEM) LEAVE_FF(fs, FR_INVALID_NAME); /* Reject illegal name (heading DDEM) */ |
|
} |
|
} |
|
|
|
/* Set volume label */ |
|
dj.obj.sclust = 0; /* Open root directory */ |
|
res = dir_sdi(&dj, 0); |
|
if (res == FR_OK) { |
|
res = dir_read(&dj, 1); /* Get volume label entry */ |
|
if (res == FR_OK) { |
|
if (_FS_EXFAT && fs->fs_type == FS_EXFAT) { |
|
dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2); /* Change the volume label */ |
|
mem_cpy(dj.dir + XDIR_Label, dirvn, slen); |
|
} else { |
|
if (slen) { |
|
mem_cpy(dj.dir, dirvn, 11); /* Change the volume label */ |
|
} else { |
|
dj.dir[DIR_Name] = DDEM; /* Remove the volume label */ |
|
} |
|
} |
|
fs->wflag = 1; |
|
res = sync_fs(fs); |
|
} else { /* No volume label entry is found or error */ |
|
if (res == FR_NO_FILE) { |
|
res = FR_OK; |
|
if (slen) { /* Create a volume label entry */ |
|
res = dir_alloc(&dj, 1); /* Allocate an entry */ |
|
if (res == FR_OK) { |
|
mem_set(dj.dir, 0, SZDIRE); /* Clear the entry */ |
|
if (_FS_EXFAT && fs->fs_type == FS_EXFAT) { |
|
dj.dir[XDIR_Type] = 0x83; /* Create 83 entry */ |
|
dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2); |
|
mem_cpy(dj.dir + XDIR_Label, dirvn, slen); |
|
} else { |
|
dj.dir[DIR_Attr] = AM_VOL; /* Create volume label entry */ |
|
mem_cpy(dj.dir, dirvn, 11); |
|
} |
|
fs->wflag = 1; |
|
res = sync_fs(fs); |
|
} |
|
} |
|
} |
|
} |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
#endif /* _USE_LABEL */ |
|
|
|
|
|
|
|
#if _USE_EXPAND && !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* Allocate a Contiguous Blocks to the File */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_expand ( |
|
FIL* fp, /* Pointer to the file object */ |
|
FSIZE_t fsz, /* File size to be expanded to */ |
|
BYTE opt /* Operation mode 0:Find and prepare or 1:Find and allocate */ |
|
) |
|
{ |
|
FRESULT res; |
|
FATFS *fs; |
|
DWORD n, clst, stcl, scl, ncl, tcl, lclst; |
|
|
|
|
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */ |
|
if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); |
|
if (fsz == 0 || fp->obj.objsize != 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED); |
|
#if _FS_EXFAT |
|
if (fs->fs_type != FS_EXFAT && fsz >= 0x100000000) LEAVE_FF(fs, FR_DENIED); /* Check if in size limit */ |
|
#endif |
|
n = (DWORD)fs->csize * SS(fs); /* Cluster size */ |
|
tcl = (DWORD)(fsz / n) + ((fsz & (n - 1)) ? 1 : 0); /* Number of clusters required */ |
|
stcl = fs->last_clst; lclst = 0; |
|
if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2; |
|
|
|
#if _FS_EXFAT |
|
if (fs->fs_type == FS_EXFAT) { |
|
scl = find_bitmap(fs, stcl, tcl); /* Find a contiguous cluster block */ |
|
if (scl == 0) res = FR_DENIED; /* No contiguous cluster block was found */ |
|
if (scl == 0xFFFFFFFF) res = FR_DISK_ERR; |
|
if (res == FR_OK) { /* A contiguous free area is found */ |
|
if (opt) { /* Allocate it now */ |
|
res = change_bitmap(fs, scl, tcl, 1); /* Mark the cluster block 'in use' */ |
|
lclst = scl + tcl - 1; |
|
} else { /* Set it as suggested point for next allocation */ |
|
lclst = scl - 1; |
|
} |
|
} |
|
} else |
|
#endif |
|
{ |
|
scl = clst = stcl; ncl = 0; |
|
for (;;) { /* Find a contiguous cluster block */ |
|
n = get_fat(&fp->obj, clst); |
|
if (++clst >= fs->n_fatent) clst = 2; |
|
if (n == 1) { res = FR_INT_ERR; break; } |
|
if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } |
|
if (n == 0) { /* Is it a free cluster? */ |
|
if (++ncl == tcl) break; /* Break if a contiguous cluster block is found */ |
|
} else { |
|
scl = clst; ncl = 0; /* Not a free cluster */ |
|
} |
|
if (clst == stcl) { res = FR_DENIED; break; } /* No contiguous cluster? */ |
|
} |
|
if (res == FR_OK) { /* A contiguous free area is found */ |
|
if (opt) { /* Allocate it now */ |
|
for (clst = scl, n = tcl; n; clst++, n--) { /* Create a cluster chain on the FAT */ |
|
res = put_fat(fs, clst, (n == 1) ? 0xFFFFFFFF : clst + 1); |
|
if (res != FR_OK) break; |
|
lclst = clst; |
|
} |
|
} else { /* Set it as suggested point for next allocation */ |
|
lclst = scl - 1; |
|
} |
|
} |
|
} |
|
|
|
if (res == FR_OK) { |
|
fs->last_clst = lclst; /* Set suggested start cluster to start next */ |
|
if (opt) { /* Is it allocated now? */ |
|
fp->obj.sclust = scl; /* Update object allocation information */ |
|
fp->obj.objsize = fsz; |
|
if (_FS_EXFAT) fp->obj.stat = 2; /* Set status 'contiguous chain' */ |
|
fp->flag |= FA_MODIFIED; |
|
if (fs->free_clst <= fs->n_fatent - 2) { /* Update FSINFO */ |
|
fs->free_clst -= tcl; |
|
fs->fsi_flag |= 1; |
|
} |
|
} |
|
} |
|
|
|
LEAVE_FF(fs, res); |
|
} |
|
|
|
#endif /* _USE_EXPAND && !_FS_READONLY */ |
|
|
|
|
|
|
|
#if _USE_FORWARD |
|
/*-----------------------------------------------------------------------*/ |
|
/* Forward data to the stream directly */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
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; |
|
FATFS *fs; |
|
DWORD clst, sect; |
|
FSIZE_t remain; |
|
UINT rcnt, csect; |
|
BYTE *dbuf; |
|
|
|
|
|
*bf = 0; /* Clear transfer byte counter */ |
|
res = validate(&fp->obj, &fs); /* Check validity of the file object */ |
|
if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res); |
|
if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */ |
|
|
|
remain = fp->obj.objsize - 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 goes busy */ |
|
fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) { |
|
csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1)); /* Sector offset in the cluster */ |
|
if (fp->fptr % SS(fs) == 0) { /* On the sector boundary? */ |
|
if (csect == 0) { /* On the cluster boundary? */ |
|
clst = (fp->fptr == 0) ? /* On the top of the file? */ |
|
fp->obj.sclust : get_fat(&fp->obj, fp->clust); |
|
if (clst <= 1) ABORT(fs, FR_INT_ERR); |
|
if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR); |
|
fp->clust = clst; /* Update current cluster */ |
|
} |
|
} |
|
sect = clust2sect(fs, fp->clust); /* Get current data sector */ |
|
if (!sect) ABORT(fs, FR_INT_ERR); |
|
sect += csect; |
|
#if _FS_TINY |
|
if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window to the file data */ |
|
dbuf = fs->win; |
|
#else |
|
if (fp->sect != sect) { /* Fill sector cache with file data */ |
|
#if !_FS_READONLY |
|
if (fp->flag & FA_DIRTY) { /* Write-back dirty sector cache */ |
|
if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); |
|
fp->flag &= (BYTE)~FA_DIRTY; |
|
} |
|
#endif |
|
if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); |
|
} |
|
dbuf = fp->buf; |
|
#endif |
|
fp->sect = sect; |
|
rcnt = SS(fs) - (UINT)fp->fptr % SS(fs); /* Number of bytes left in the sector */ |
|
if (rcnt > btf) rcnt = btf; /* Clip it by btr if needed */ |
|
rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt); /* Forward the file data */ |
|
if (!rcnt) ABORT(fs, FR_INT_ERR); |
|
} |
|
|
|
LEAVE_FF(fs, FR_OK); |
|
} |
|
#endif /* _USE_FORWARD */ |
|
|
|
|
|
|
|
#if _USE_MKFS && !_FS_READONLY |
|
/*-----------------------------------------------------------------------*/ |
|
/* Create an FAT/exFAT volume */ |
|
/*-----------------------------------------------------------------------*/ |
|
|
|
FRESULT f_mkfs ( |
|
const TCHAR* path, /* Logical drive number */ |
|
BYTE opt, /* Format option */ |
|
DWORD au, /* Size of allocation unit (cluster) [byte] */ |
|
void* work, /* Pointer to working buffer */ |
|
UINT len /* Size of working buffer */ |
|
) |
|
{ |
|
const UINT n_fats = 1; /* Number of FATs for FAT12/16/32 volume (1 or 2) */ |
|
const UINT n_rootdir = 512; /* Number of root directory entries for FAT12/16 volume */ |
|
static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0}; /* Cluster size boundary for FAT12/16 volume (4Ks unit) */ |
|
static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0}; /* Cluster size boundary for FAT32 volume (128Ks unit) */ |
|
BYTE fmt, sys, *buf, *pte, pdrv, part; |
|
WORD ss; |
|
DWORD szb_buf, sz_buf, sz_blk, n_clst, pau, sect, nsect, n; |
|
DWORD b_vol, b_fat, b_data; /* Base LBA for volume, fat, data */ |
|
DWORD sz_vol, sz_rsv, sz_fat, sz_dir; /* Size for volume, fat, dir, data */ |
|
UINT i; |
|
int vol; |
|
DSTATUS stat; |
|
#if _USE_TRIM || _FS_EXFAT |
|
DWORD tbl[3]; |
|
#endif |
|
|
|
|
|
/* Check mounted drive and clear work area */ |
|
vol = get_ldnumber(&path); /* Get target logical drive */ |
|
if (vol < 0) return FR_INVALID_DRIVE; |
|
if (FatFs[vol]) FatFs[vol]->fs_type = 0; /* Clear the volume */ |
|
pdrv = LD2PD(vol); /* Physical drive */ |
|
part = LD2PT(vol); /* Partition (0:create as new, 1-4:get from partition table) */ |
|
|
|
/* Check physical drive status */ |
|
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_BLOCK_SIZE, &sz_blk) != RES_OK || !sz_blk || sz_blk > 32768 || (sz_blk & (sz_blk - 1))) sz_blk = 1; /* Erase block to align data area */ |
|
#if _MAX_SS != _MIN_SS /* Get sector size of the medium if variable sector size cfg. */ |
|
if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR; |
|
if (ss > _MAX_SS || ss < _MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR; |
|
#else |
|
ss = _MAX_SS; |
|
#endif |
|
if ((au != 0 && au < ss) || au > 0x1000000 || (au & (au - 1))) return FR_INVALID_PARAMETER; /* Check if au is valid */ |
|
au /= ss; /* Cluster size in unit of sector */ |
|
|
|
/* Get working buffer */ |
|
buf = (BYTE*)work; /* Working buffer */ |
|
sz_buf = len / ss; /* Size of working buffer (sector) */ |
|
szb_buf = sz_buf * ss; /* Size of working buffer (byte) */ |
|
if (!szb_buf) return FR_MKFS_ABORTED; |
|
|
|
/* Determine where the volume to be located (b_vol, sz_vol) */ |
|
if (_MULTI_PARTITION && part != 0) { |
|
/* Get partition information from partition table in the MBR */ |
|
if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Load MBR */ |
|
if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED; /* Check if MBR is valid */ |
|
pte = buf + (MBR_Table + (part - 1) * SZ_PTE); |
|
if (!pte[PTE_System]) return FR_MKFS_ABORTED; /* No partition? */ |
|
b_vol = ld_dword(pte + PTE_StLba); /* Get volume start sector */ |
|
sz_vol = ld_dword(pte + PTE_SizLba); /* Get volume size */ |
|
} else { |
|
/* Create a single-partition in this function */ |
|
if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) return FR_DISK_ERR; |
|
b_vol = (opt & FM_SFD) ? 0 : 63; /* Volume start sector */ |
|
if (sz_vol < b_vol) return FR_MKFS_ABORTED; |
|
sz_vol -= b_vol; /* Volume size */ |
|
} |
|
if (sz_vol < 128) return FR_MKFS_ABORTED; /* Check if volume size is >=128s */ |
|
|
|
/* Pre-determine the FAT type */ |
|
do { |
|
if (_FS_EXFAT && (opt & FM_EXFAT)) { /* exFAT possible? */ |
|
if ((opt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || au > 128) { /* exFAT only, vol >= 64Ms or au > 128s ? */ |
|
fmt = FS_EXFAT; break; |
|
} |
|
} |
|
if (au > 128) return FR_INVALID_PARAMETER; /* Too large au for FAT/FAT32 */ |
|
if (opt & FM_FAT32) { /* FAT32 possible? */ |
|
if ((opt & FM_ANY) == FM_FAT32 || !(opt & FM_FAT)) { /* FAT32 only or no-FAT? */ |
|
fmt = FS_FAT32; break; |
|
} |
|
} |
|
if (!(opt & FM_FAT)) return FR_INVALID_PARAMETER; /* no-FAT? */ |
|
fmt = FS_FAT16; |
|
} while (0); |
|
|
|
#if _FS_EXFAT |
|
if (fmt == FS_EXFAT) { /* Create an exFAT volume */ |
|
DWORD szb_bit, szb_case, sum, nb, cl; |
|
WCHAR ch, si; |
|
UINT j, st; |
|
BYTE b; |
|
|
|
if (sz_vol < 0x1000) return FR_MKFS_ABORTED; /* Too small volume? */ |
|
#if _USE_TRIM |
|
tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area may be erased */ |
|
disk_ioctl(pdrv, CTRL_TRIM, tbl); |
|
#endif |
|
/* Determine FAT location, data location and number of clusters */ |
|
if (!au) { /* au auto-selection */ |
|
au = 8; |
|
if (sz_vol >= 0x80000) au = 64; /* >= 512Ks */ |
|
if (sz_vol >= 0x4000000) au = 256; /* >= 64Ms */ |
|
} |
|
b_fat = b_vol + 32; /* FAT start at offset 32 */ |
|
sz_fat = ((sz_vol / au + 2) * 4 + ss - 1) / ss; /* Number of FAT sectors */ |
|
b_data = (b_fat + sz_fat + sz_blk - 1) & ~(sz_blk - 1); /* Align data area to the erase block boundary */ |
|
if (b_data >= sz_vol / 2) return FR_MKFS_ABORTED; /* Too small volume? */ |
|
n_clst = (sz_vol - (b_data - b_vol)) / au; /* Number of clusters */ |
|
if (n_clst <16) return FR_MKFS_ABORTED; /* Too few clusters? */ |
|
if (n_clst > MAX_EXFAT) return FR_MKFS_ABORTED; /* Too many clusters? */ |
|
|
|
szb_bit = (n_clst + 7) / 8; /* Size of allocation bitmap */ |
|
tbl[0] = (szb_bit + au * ss - 1) / (au * ss); /* Number of allocation bitmap clusters */ |
|
|
|
/* Create a compressed up-case table */ |
|
sect = b_data + au * tbl[0]; /* Table start sector */ |
|
sum = 0; /* Table checksum to be stored in the 82 entry */ |
|
st = si = i = j = szb_case = 0; |
|
do { |
|
switch (st) { |
|
case 0: |
|
ch = ff_wtoupper(si); /* Get an up-case char */ |
|
if (ch != si) { |
|
si++; break; /* Store the up-case char if exist */ |
|
} |
|
for (j = 1; (WCHAR)(si + j) && (WCHAR)(si + j) == ff_wtoupper((WCHAR)(si + j)); j++) ; /* Get run length of no-case block */ |
|
if (j >= 128) { |
|
ch = 0xFFFF; st = 2; break; /* Compress the no-case block if run is >= 128 */ |
|
} |
|
st = 1; /* Do not compress short run */ |
|
/* go to next case */ |
|
case 1: |
|
ch = si++; /* Fill the short run */ |
|
if (--j == 0) st = 0; |
|
break; |
|
|
|
default: |
|
ch = (WCHAR)j; si += j; /* Number of chars to skip */ |
|
st = 0; |
|
} |
|
sum = xsum32(buf[i + 0] = (BYTE)ch, sum); /* Put it into the write buffer */ |
|
sum = xsum32(buf[i + 1] = (BYTE)(ch >> 8), sum); |
|
i += 2; szb_case += 2; |
|
if (!si || i == szb_buf) { /* Write buffered data when buffer full or end of process */ |
|
n = (i + ss - 1) / ss; |
|
if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR; |
|
sect += n; i = 0; |
|
} |
|
} while (si); |
|
tbl[1] = (szb_case + au * ss - 1) / (au * ss); /* Number of up-case table clusters */ |
|
tbl[2] = 1; /* Number of root dir clusters */ |
|
|
|
/* Initialize the allocation bitmap */ |
|
sect = b_data; nsect = (szb_bit + ss - 1) / ss; /* Start of bitmap and number of sectors */ |
|
nb = tbl[0] + tbl[1] + tbl[2]; /* Number of clusters in-use by system */ |
|
do { |
|
mem_set(buf, 0, szb_buf); |
|
for (i = 0; nb >= 8 && i < szb_buf; buf[i++] = 0xFF, nb -= 8) ; |
|
for (b = 1; nb && i < szb_buf; buf[i] |= b, b <<= 1, nb--) ; |
|
n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */ |
|
if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR; |
|
sect += n; nsect -= n; |
|
} while (nsect); |
|
|
|
/* Initialize the FAT */ |
|
sect = b_fat; nsect = sz_fat; /* Start of FAT and number of FAT sectors */ |
|
j = nb = cl = 0; |
|
do { |
|
mem_set(buf, 0, szb_buf); i = 0; /* Clear work area and reset write index */ |
|
if (cl == 0) { /* Set entry 0 and 1 */ |
|
st_dword(buf + i, 0xFFFFFFF8); i += 4; cl++; |
|
st_dword(buf + i, 0xFFFFFFFF); i += 4; cl++; |
|
} |
|
do { /* Create chains of bitmap, up-case and root dir */ |
|
while (nb && i < szb_buf) { /* Create a chain */ |
|
st_dword(buf + i, (nb > 1) ? cl + 1 : 0xFFFFFFFF); |
|
i += 4; cl++; nb--; |
|
} |
|
if (!nb && j < 3) nb = tbl[j++]; /* Next chain */ |
|
} while (nb && i < szb_buf); |
|
n = (nsect > sz_buf) ? sz_buf : nsect; /* Write the buffered data */ |
|
if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR; |
|
sect += n; nsect -= n; |
|
} while (nsect); |
|
|
|
/* Initialize the root directory */ |
|
mem_set(buf, 0, szb_buf); |
|
buf[SZDIRE * 0 + 0] = 0x83; /* 83 entry (volume label) */ |
|
buf[SZDIRE * 1 + 0] = 0x81; /* 81 entry (allocation bitmap) */ |
|
st_dword(buf + SZDIRE * 1 + 20, 2); |
|
st_dword(buf + SZDIRE * 1 + 24, szb_bit); |
|
buf[SZDIRE * 2 + 0] = 0x82; /* 82 entry (up-case table) */ |
|
st_dword(buf + SZDIRE * 2 + 4, sum); |
|
st_dword(buf + SZDIRE * 2 + 20, 2 + tbl[0]); |
|
st_dword(buf + SZDIRE * 2 + 24, szb_case); |
|
sect = b_data + au * (tbl[0] + tbl[1]); nsect = au; /* Start of the root directory and number of sectors */ |
|
do { /* Fill root directory sectors */ |
|
n = (nsect > sz_buf) ? sz_buf : nsect; |
|
if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR; |
|
mem_set(buf, 0, ss); |
|
sect += n; nsect -= n; |
|
} while (nsect); |
|
|
|
/* Create two set of the exFAT VBR blocks */ |
|
sect = b_vol; |
|
for (n = 0; n < 2; n++) { |
|
/* Main record (+0) */ |
|
mem_set(buf, 0, ss); |
|
mem_cpy(buf + BS_JmpBoot, "\xEB\x76\x90" "EXFAT ", 11); /* Boot jump code (x86), OEM name */ |
|
st_dword(buf + BPB_VolOfsEx, b_vol); /* Volume offset in the physical drive [sector] */ |
|
st_dword(buf + BPB_TotSecEx, sz_vol); /* Volume size [sector] */ |
|
st_dword(buf + BPB_FatOfsEx, b_fat - b_vol); /* FAT offset [sector] */ |
|
st_dword(buf + BPB_FatSzEx, sz_fat); /* FAT size [sector] */ |
|
st_dword(buf + BPB_DataOfsEx, b_data - b_vol); /* Data offset [sector] */ |
|
st_dword(buf + BPB_NumClusEx, n_clst); /* Number of clusters */ |
|
st_dword(buf + BPB_RootClusEx, 2 + tbl[0] + tbl[1]); /* Root dir cluster # */ |
|
st_dword(buf + BPB_VolIDEx, GET_FATTIME()); /* VSN */ |
|
st_word(buf + BPB_FSVerEx, 0x100); /* File system version (1.00) */ |
|
for (buf[BPB_BytsPerSecEx] = 0, i = ss; i >>= 1; buf[BPB_BytsPerSecEx]++) ; /* Log2 of sector size [byte] */ |
|
for (buf[BPB_SecPerClusEx] = 0, i = au; i >>= 1; buf[BPB_SecPerClusEx]++) ; /* Log2 of cluster size [sector] */ |
|
buf[BPB_NumFATsEx] = 1; /* Number of FATs */ |
|
buf[BPB_DrvNumEx] = 0x80; /* Drive number (for int13) */ |
|
st_word(buf + BS_BootCodeEx, 0xFEEB); /* Boot code (x86) */ |
|
st_word(buf + BS_55AA, 0xAA55); /* Signature (placed here regardless of sector size) */ |
|
for (i = sum = 0; i < ss; i++) { /* VBR checksum */ |
|
if (i != BPB_VolFlagEx && i != BPB_VolFlagEx + 1 && i != BPB_PercInUseEx) sum = xsum32(buf[i], sum); |
|
} |
|
if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR; |
|
/* Extended bootstrap record (+1..+8) */ |
|
mem_set(buf, 0, ss); |
|
st_word(buf + ss - 2, 0xAA55); /* Signature (placed at end of sector) */ |
|
for (j = 1; j < 9; j++) { |
|
for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */ |
|
if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR; |
|
} |
|
/* OEM/Reserved record (+9..+10) */ |
|
mem_set(buf, 0, ss); |
|
for ( ; j < 11; j++) { |
|
for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ; /* VBR checksum */ |
|
if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR; |
|
} |
|
/* Sum record (+11) */ |
|
for (i = 0; i < ss; i += 4) st_dword(buf + i, sum); /* Fill with checksum value */ |
|
if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR; |
|
} |
|
|
|
} else |
|
#endif /* _FS_EXFAT */ |
|
{ /* Create an FAT12/16/32 volume */ |
|
do { |
|
pau = au; |
|
/* Pre-determine number of clusters and FAT sub-type */ |
|
if (fmt == FS_FAT32) { /* FAT32 volume */ |
|
if (!pau) { /* au auto-selection */ |
|
n = sz_vol / 0x20000; /* Volume size in unit of 128KS */ |
|
for (i = 0, pau = 1; cst32[i] && cst32[i] <= n; i++, pau <<= 1) ; /* Get from table */ |
|
} |
|
n_clst = sz_vol / pau; /* Number of clusters */ |
|
sz_fat = (n_clst * 4 + 8 + ss - 1) / ss; /* FAT size [sector] */ |
|
sz_rsv = 32; /* Number of reserved sectors */ |
|
sz_dir = 0; /* No static directory */ |
|
if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) return FR_MKFS_ABORTED; |
|
} else { /* FAT12/16 volume */ |
|
if (!pau) { /* au auto-selection */ |
|
n = sz_vol / 0x1000; /* Volume size in unit of 4KS */ |
|
for (i = 0, pau = 1; cst[i] && cst[i] <= n; i++, pau <<= 1) ; /* Get from table */ |
|
} |
|
n_clst = sz_vol / pau; |
|
if (n_clst > MAX_FAT12) { |
|
n = n_clst * 2 + 4; /* FAT size [byte] */ |
|
} else { |
|
fmt = FS_FAT12; |
|
n = (n_clst * 3 + 1) / 2 + 3; /* FAT size [byte] */ |
|
} |
|
sz_fat = (n + ss - 1) / ss; /* FAT size [sector] */ |
|
sz_rsv = 1; /* Number of reserved sectors */ |
|
sz_dir = (DWORD)n_rootdir * SZDIRE / ss; /* Rootdir size [sector] */ |
|
} |
|
b_fat = b_vol + sz_rsv; /* FAT base */ |
|
b_data = b_fat + sz_fat * n_fats + sz_dir; /* Data base */ |
|
|
|
/* Align data base to erase block boundary (for flash memory media) */ |
|
n = ((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data; /* Next nearest erase block from current data base */ |
|
if (fmt == FS_FAT32) { /* FAT32: Move FAT base */ |
|
sz_rsv += n; b_fat += n; |
|
} else { /* FAT12/16: Expand FAT size */ |
|
sz_fat += n / n_fats; |
|
} |
|
|
|
/* Determine number of clusters and final check of validity of the FAT sub-type */ |
|
if (sz_vol < b_data + pau * 16 - b_vol) return FR_MKFS_ABORTED; /* Too small volume */ |
|
n_clst = (sz_vol - sz_rsv - sz_fat * n_fats - sz_dir) / pau; |
|
if (fmt == FS_FAT32) { |
|
if (n_clst <= MAX_FAT16) { /* Too few clusters for FAT32 */ |
|
if (!au && (au = pau / 2) != 0) continue; /* Adjust cluster size and retry */ |
|
return FR_MKFS_ABORTED; |
|
} |
|
} |
|
if (fmt == FS_FAT16) { |
|
if (n_clst > MAX_FAT16) { /* Too many clusters for FAT16 */ |
|
if (!au && (pau * 2) <= 64) { |
|
au = pau * 2; continue; /* Adjust cluster size and retry */ |
|
} |
|
if ((opt & FM_FAT32)) { |
|
fmt = FS_FAT32; continue; /* Switch type to FAT32 and retry */ |
|
} |
|
if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */ |
|
return FR_MKFS_ABORTED; |
|
} |
|
if (n_clst <= MAX_FAT12) { /* Too few clusters for FAT16 */ |
|
if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */ |
|
return FR_MKFS_ABORTED; |
|
} |
|
} |
|
if (fmt == FS_FAT12 && n_clst > MAX_FAT12) return FR_MKFS_ABORTED; /* Too many clusters for FAT12 */ |
|
|
|
/* Ok, it is the valid cluster configuration */ |
|
break; |
|
} while (1); |
|
|
|
#if _USE_TRIM |
|
tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1; /* Inform the device the volume area can be erased */ |
|
disk_ioctl(pdrv, CTRL_TRIM, tbl); |
|
#endif |
|
/* Create FAT VBR */ |
|
mem_set(buf, 0, ss); |
|
mem_cpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code (x86), OEM name */ |
|
st_word(buf + BPB_BytsPerSec, ss); /* Sector size [byte] */ |
|
buf[BPB_SecPerClus] = (BYTE)pau; /* Cluster size [sector] */ |
|
st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv); /* Size of reserved area */ |
|
buf[BPB_NumFATs] = (BYTE)n_fats; /* Number of FATs */ |
|
st_word(buf + BPB_RootEntCnt, (WORD)((fmt == FS_FAT32) ? 0 : n_rootdir)); /* Number of root directory entries */ |
|
if (sz_vol < 0x10000) { |
|
st_word(buf + BPB_TotSec16, (WORD)sz_vol); /* Volume size in 16-bit LBA */ |
|
} else { |
|
st_dword(buf + BPB_TotSec32, sz_vol); /* Volume size in 32-bit LBA */ |
|
} |
|
buf[BPB_Media] = 0xF8; /* Media descriptor byte */ |
|
st_word(buf + BPB_SecPerTrk, 63); /* Number of sectors per track (for int13) */ |
|
st_word(buf + BPB_NumHeads, 255); /* Number of heads (for int13) */ |
|
st_dword(buf + BPB_HiddSec, b_vol); /* Volume offset in the physical drive [sector] */ |
|
if (fmt == FS_FAT32) { |
|
st_dword(buf + BS_VolID32, GET_FATTIME()); /* VSN */ |
|
st_dword(buf + BPB_FATSz32, sz_fat); /* FAT size [sector] */ |
|
st_dword(buf + BPB_RootClus32, 2); /* Root directory cluster # (2) */ |
|
st_word(buf + BPB_FSInfo32, 1); /* Offset of FSINFO sector (VBR + 1) */ |
|
st_word(buf + BPB_BkBootSec32, 6); /* Offset of backup VBR (VBR + 6) */ |
|
buf[BS_DrvNum32] = 0x80; /* Drive number (for int13) */ |
|
buf[BS_BootSig32] = 0x29; /* Extended boot signature */ |
|
mem_cpy(buf + BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */ |
|
} else { |
|
st_dword(buf + BS_VolID, GET_FATTIME()); /* VSN */ |
|
st_word(buf + BPB_FATSz16, (WORD)sz_fat); /* FAT size [sector] */ |
|
buf[BS_DrvNum] = 0x80; /* Drive number (for int13) */ |
|
buf[BS_BootSig] = 0x29; /* Extended boot signature */ |
|
mem_cpy(buf + BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */ |
|
} |
|
st_word(buf + BS_55AA, 0xAA55); /* Signature (offset is fixed here regardless of sector size) */ |
|
if (disk_write(pdrv, buf, b_vol, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the VBR sector */ |
|
|
|
/* Create FSINFO record if needed */ |
|
if (fmt == FS_FAT32) { |
|
disk_write(pdrv, buf, b_vol + 6, 1); /* Write backup VBR (VBR + 6) */ |
|
mem_set(buf, 0, ss); |
|
st_dword(buf + FSI_LeadSig, 0x41615252); |
|
st_dword(buf + FSI_StrucSig, 0x61417272); |
|
st_dword(buf + FSI_Free_Count, n_clst - 1); /* Number of free clusters */ |
|
st_dword(buf + FSI_Nxt_Free, 2); /* Last allocated cluster# */ |
|
st_word(buf + BS_55AA, 0xAA55); |
|
disk_write(pdrv, buf, b_vol + 7, 1); /* Write backup FSINFO (VBR + 7) */ |
|
disk_write(pdrv, buf, b_vol + 1, 1); /* Write original FSINFO (VBR + 1) */ |
|
} |
|
|
|
/* Initialize FAT area */ |
|
mem_set(buf, 0, (UINT)szb_buf); |
|
sect = b_fat; /* FAT start sector */ |
|
for (i = 0; i < n_fats; i++) { /* Initialize FATs each */ |
|
if (fmt == FS_FAT32) { |
|
st_dword(buf + 0, 0xFFFFFFF8); /* Entry 0 */ |
|
st_dword(buf + 4, 0xFFFFFFFF); /* Entry 1 */ |
|
st_dword(buf + 8, 0x0FFFFFFF); /* Entry 2 (root directory) */ |
|
} else { |
|
st_dword(buf + 0, (fmt == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8); /* Entry 0 and 1 */ |
|
} |
|
nsect = sz_fat; /* Number of FAT sectors */ |
|
do { /* Fill FAT sectors */ |
|
n = (nsect > sz_buf) ? sz_buf : nsect; |
|
if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR; |
|
mem_set(buf, 0, ss); |
|
sect += n; nsect -= n; |
|
} while (nsect); |
|
} |
|
|
|
/* Initialize root directory (fill with zero) */ |
|
nsect = (fmt == FS_FAT32) ? pau : sz_dir; /* Number of root directory sectors */ |
|
do { |
|
n = (nsect > sz_buf) ? sz_buf : nsect; |
|
if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR; |
|
sect += n; nsect -= n; |
|
} while (nsect); |
|
} |
|
|
|
/* Determine system ID in the partition table */ |
|
if (_FS_EXFAT && fmt == FS_EXFAT) { |
|
sys = 0x07; /* HPFS/NTFS/exFAT */ |
|
} else { |
|
if (fmt == FS_FAT32) { |
|
sys = 0x0C; /* FAT32X */ |
|
} else { |
|
if (sz_vol >= 0x10000) { |
|
sys = 0x06; /* FAT12/16 (>=64KS) */ |
|
} else { |
|
sys = (fmt == FS_FAT16) ? 0x04 : 0x01; /* FAT16 (<64KS) : FAT12 (<64KS) */ |
|
} |
|
} |
|
} |
|
|
|
/* Update partition information */ |
|
if (_MULTI_PARTITION && part != 0) { /* Created in the existing partition */ |
|
/* Update system ID in the partition table */ |
|
if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Read the MBR */ |
|
buf[MBR_Table + (part - 1) * SZ_PTE + PTE_System] = sys; /* Set system ID */ |
|
if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it back to the MBR */ |
|
} else { /* Created as a new single partition */ |
|
if (!(opt & FM_SFD)) { /* Create partition table if in FDISK format */ |
|
mem_set(buf, 0, ss); |
|
st_word(buf + BS_55AA, 0xAA55); /* MBR signature */ |
|
pte = buf + MBR_Table; /* Create partition table for single partition in the drive */ |
|
pte[PTE_Boot] = 0; /* Boot indicator */ |
|
pte[PTE_StHead] = 1; /* Start head */ |
|
pte[PTE_StSec] = 1; /* Start sector */ |
|
pte[PTE_StCyl] = 0; /* Start cylinder */ |
|
pte[PTE_System] = sys; /* System type */ |
|
n = (b_vol + sz_vol) / (63 * 255); /* (End CHS may be invalid) */ |
|
pte[PTE_EdHead] = 254; /* End head */ |
|
pte[PTE_EdSec] = (BYTE)(n >> 2 | 63); /* End sector */ |
|
pte[PTE_EdCyl] = (BYTE)n; /* End cylinder */ |
|
st_dword(pte + PTE_StLba, b_vol); /* Start offset in LBA */ |
|
st_dword(pte + PTE_SizLba, sz_vol); /* Size in sectors */ |
|
if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR; /* Write it to the MBR */ |
|
} |
|
} |
|
|
|
if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) return FR_DISK_ERR; |
|
|
|
return FR_OK; |
|
} |
|
|
|
|
|
|
|
#if _MULTI_PARTITION |
|
/*-----------------------------------------------------------------------*/ |
|
/* Create partition table on the 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 the CHS without any consideration 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; /* Number of cylinders */ |
|
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; /* End cylinder */ |
|
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] = 0x07; /* 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); /* Number of sectors */ |
|
|
|
/* Next partition */ |
|
b_cyl += p_cyl; |
|
} |
|
st_word(p, 0xAA55); |
|
|
|
/* Write it to the MBR */ |
|
return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? 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 _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 (0x80-0x7FF) */ |
|
f_read(fp, s, 1, &rc); |
|
if (rc != 1) break; |
|
c = (c & 0x1F) << 6 | (s[0] & 0x3F); |
|
if (c < 0x80) c = '?'; /* Reject invalid code range */ |
|
} else { |
|
if (c < 0xF0) { /* Three-byte sequence (0x800-0xFFFF) */ |
|
f_read(fp, s, 2, &rc); |
|
if (rc != 2) break; |
|
c = c << 12 | (s[0] & 0x3F) << 6 | (s[1] & 0x3F); |
|
if (c < 0x800) c = '?'; /* Reject invalid code range */ |
|
} 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; /* Ptr to the writing file */ |
|
int idx, nchr; /* Write index of buf[] (-1:error), number of chars written */ |
|
BYTE buf[64]; /* Write buffer */ |
|
} putbuff; |
|
|
|
|
|
static |
|
void putc_bfd ( /* Buffered write with code conversion */ |
|
putbuff* pb, |
|
TCHAR c |
|
) |
|
{ |
|
UINT bw; |
|
int i; |
|
|
|
|
|
if (_USE_STRFUNC == 2 && c == '\n') { /* LF -> CRLF conversion */ |
|
putc_bfd(pb, '\r'); |
|
} |
|
|
|
i = pb->idx; /* Write index of pb->buf[] */ |
|
if (i < 0) return; |
|
|
|
#if _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++; |
|
} |
|
|
|
|
|
static |
|
int putc_flush ( /* Flush left characters in the buffer */ |
|
putbuff* pb |
|
) |
|
{ |
|
UINT nw; |
|
|
|
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; |
|
} |
|
|
|
|
|
static |
|
void putc_init ( /* Initialize write buffer */ |
|
putbuff* pb, |
|
FIL* fp |
|
) |
|
{ |
|
pb->fp = fp; |
|
pb->nchr = pb->idx = 0; |
|
} |
|
|
|
|
|
|
|
int f_putc ( |
|
TCHAR c, /* A character to be output */ |
|
FIL* fp /* Pointer to the file object */ |
|
) |
|
{ |
|
putbuff pb; |
|
|
|
|
|
putc_init(&pb, fp); |
|
putc_bfd(&pb, c); /* Put the character */ |
|
return putc_flush(&pb); |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* 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; |
|
|
|
|
|
putc_init(&pb, fp); |
|
while (*str) putc_bfd(&pb, *str++); /* Put the string */ |
|
return putc_flush(&pb); |
|
} |
|
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/ |
|
/* 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; |
|
putbuff pb; |
|
BYTE f, r; |
|
UINT i, j, w; |
|
DWORD v; |
|
TCHAR c, d, str[32], *p; |
|
|
|
|
|
putc_init(&pb, fp); |
|
|
|
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; |
|
str[i++] = d + '0'; |
|
} while (v && i < sizeof str / sizeof str[0]); |
|
if (f & 8) str[i++] = '-'; |
|
j = i; d = (f & 1) ? '0' : ' '; |
|
while (!(f & 2) && j++ < w) putc_bfd(&pb, d); |
|
do { |
|
putc_bfd(&pb, str[--i]); |
|
} while (i); |
|
while (j++ < w) putc_bfd(&pb, d); |
|
} |
|
|
|
va_end(arp); |
|
|
|
return putc_flush(&pb); |
|
} |
|
|
|
#endif /* !_FS_READONLY */ |
|
#endif /* _USE_STRFUNC */
|
|
|