-/*----------------------------------------------------------------------------/\r
-/ FatFs - FAT file system module R0.07e (C)ChaN, 2010\r
-/-----------------------------------------------------------------------------/\r
-/ FatFs module is a generic FAT file system module for small embedded systems.\r
-/ This is a free software that opened for education, research and commercial\r
-/ developments under license policy of following trems.\r
-/\r
-/ Copyright (C) 2010, ChaN, all right reserved.\r
-/\r
-/ * The FatFs module is a free software and there is NO WARRANTY.\r
-/ * No restriction on use. You can use, modify and redistribute it for\r
-/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.\r
-/ * Redistributions of source code must retain the above copyright notice.\r
-/\r
-/-----------------------------------------------------------------------------/\r
-/ Feb 26,'06 R0.00 Prototype.\r
-/\r
-/ Apr 29,'06 R0.01 First stable version.\r
-/\r
-/ Jun 01,'06 R0.02 Added FAT12 support.\r
-/ Removed unbuffered mode.\r
-/ Fixed a problem on small (<32M) patition.\r
-/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).\r
-/\r
-/ Sep 22,'06 R0.03 Added f_rename().\r
-/ Changed option _FS_MINIMUM to _FS_MINIMIZE.\r
-/ Dec 11,'06 R0.03a Improved cluster scan algolithm to write files fast.\r
-/ Fixed f_mkdir() creates incorrect directory on FAT32.\r
-/\r
-/ Feb 04,'07 R0.04 Supported multiple drive system.\r
-/ Changed some interfaces for multiple drive system.\r
-/ Changed f_mountdrv() to f_mount().\r
-/ Added f_mkfs().\r
-/ Apr 01,'07 R0.04a Supported multiple partitions on a plysical drive.\r
-/ Added a capability of extending file size to f_lseek().\r
-/ Added minimization level 3.\r
-/ Fixed an endian sensitive code in f_mkfs().\r
-/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.\r
-/ Added FSInfo support.\r
-/ Fixed DBCS name can result FR_INVALID_NAME.\r
-/ Fixed short seek (<= csize) collapses the file object.\r
-/\r
-/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().\r
-/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.\r
-/ Fixed f_mkdir() on FAT32 creates incorrect directory.\r
-/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().\r
-/ Fixed off by one error at FAT sub-type determination.\r
-/ Fixed btr in f_read() can be mistruncated.\r
-/ Fixed cached sector is not flushed when create and close\r
-/ without write.\r
-/\r
-/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().\r
-/ Improved performance of f_lseek() on moving to the same\r
-/ or following cluster.\r
-/\r
-/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a buffer configuration option.\r
-/ Added long file name support.\r
-/ Added multiple code page support.\r
-/ Added re-entrancy for multitask operation.\r
-/ Added auto cluster size selection to f_mkfs().\r
-/ Added rewind option to f_readdir().\r
-/ Changed result code of critical errors.\r
-/ Renamed string functions to avoid name collision.\r
-/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.\r
-/ Added multiple sector size support.\r
-/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.\r
-/ Fixed wrong cache control in f_lseek().\r
-/ Added relative path feature.\r
-/ Added f_chdir() and f_chdrive().\r
-/ Added proper case conversion to extended char.\r
-/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.\r
-/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.\r
-/ Fixed name matching error on the 13 char boundary.\r
-/ Added a configuration option, _LFN_UNICODE.\r
-/ Changed f_readdir() to return the SFN with always upper\r
-/ case on non-LFN cfg.\r
-/---------------------------------------------------------------------------*/\r
-\r
-#include "ff.h" /* FatFs configurations and declarations */\r
-#include "diskio.h" /* Declarations of low level disk I/O functions */\r
-\r
-/*--------------------------------------------------------------------------\r
-\r
- Module Private Definitions\r
-\r
----------------------------------------------------------------------------*/\r
-\r
-#if _FATFS != 0x007E\r
-#error Wrong include file (ff.h).\r
-#endif\r
-\r
-#if _FS_REENTRANT\r
-#if _USE_LFN == 1\r
-#error Static LFN work area must not be used in re-entrant configuration.\r
-#endif\r
-#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }\r
-#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }\r
-\r
-#else\r
-#define ENTER_FF(fs)\r
-#define LEAVE_FF(fs, res) return res\r
-\r
-#endif\r
-\r
-#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }\r
-\r
-#ifndef NULL\r
-#define NULL 0\r
-#endif\r
-\r
-/* Name status flags */\r
-#define NS 11 /* Offset of name status byte */\r
-#define NS_LOSS 0x01 /* Out of 8.3 format */\r
-#define NS_LFN 0x02 /* Force to create LFN entry */\r
-#define NS_LAST 0x04 /* Last segment */\r
-#define NS_BODY 0x08 /* Lower case flag (body) */\r
-#define NS_EXT 0x10 /* Lower case flag (ext) */\r
-#define NS_DOT 0x20 /* Dot entry */\r
-\r
-\r
-\r
-\r
-/*--------------------------------------------------------------------------\r
-\r
- Private Work Area\r
-\r
----------------------------------------------------------------------------*/\r
-\r
-#if _DRIVES < 1 || _DRIVES > 9\r
-#error Number of drives must be 1-9.\r
-#endif\r
-static\r
-FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */\r
-\r
-static\r
-WORD Fsid; /* File system mount ID */\r
-\r
-#if _FS_RPATH\r
-static\r
-BYTE Drive; /* Current drive */\r
-#endif\r
-\r
-\r
-#if _USE_LFN == 1 /* LFN with static LFN working buffer */\r
-static\r
-WCHAR LfnBuf[_MAX_LFN + 1];\r
-#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR *lp = LfnBuf\r
-#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp\r
-\r
-#elif _USE_LFN > 1 /* LFN with dynamic LFN working buffer */\r
-#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR lbuf[_MAX_LFN + 1], *lp = lbuf\r
-#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp\r
-\r
-#else /* No LFN */\r
-#define NAMEBUF(sp,lp) BYTE sp[12]\r
-#define INITBUF(dj,sp,lp) dj.fn = sp\r
-\r
-#endif\r
-\r
-\r
-\r
-\r
-/*--------------------------------------------------------------------------\r
-\r
- Module Private Functions\r
-\r
----------------------------------------------------------------------------*/\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* String functions */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-/* Copy memory to memory */\r
-static\r
-void mem_cpy (void* dst, const void* src, int cnt) {\r
- char *d = (char*)dst;\r
- const char *s = (const char *)src;\r
- while (cnt--) *d++ = *s++;\r
-}\r
-\r
-/* Fill memory */\r
-static\r
-void mem_set (void* dst, int val, int cnt) {\r
- char *d = (char*)dst;\r
- while (cnt--) *d++ = (char)val;\r
-}\r
-\r
-/* Compare memory to memory */\r
-static\r
-int mem_cmp (const void* dst, const void* src, int cnt) {\r
- const char *d = (const char *)dst, *s = (const char *)src;\r
- int r = 0;\r
- while (cnt-- && (r = *d++ - *s++) == 0) ;\r
- return r;\r
-}\r
-\r
-/* Check if chr is contained in the string */\r
-static\r
-int chk_chr (const char* str, int chr) {\r
- while (*str && *str != chr) str++;\r
- return *str;\r
-}\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Request/Release grant to access the volume */\r
-/*-----------------------------------------------------------------------*/\r
-#if _FS_REENTRANT\r
-\r
-static\r
-BOOL lock_fs (\r
- FATFS *fs /* File system object */\r
-)\r
-{\r
- return ff_req_grant(fs->sobj);\r
-}\r
-\r
-\r
-static\r
-void unlock_fs (\r
- FATFS *fs, /* File system object */\r
- FRESULT res /* Result code to be returned */\r
-)\r
-{\r
- if (res != FR_NOT_ENABLED &&\r
- res != FR_INVALID_DRIVE &&\r
- res != FR_INVALID_OBJECT &&\r
- res != FR_TIMEOUT) {\r
- ff_rel_grant(fs->sobj);\r
- }\r
-}\r
-#endif\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Change window offset */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT move_window (\r
- FATFS *fs, /* File system object */\r
- DWORD sector /* Sector number to make apperance in the fs->win[] */\r
-) /* Move to zero only writes back dirty window */\r
-{\r
- DWORD wsect;\r
-\r
-\r
- wsect = fs->winsect;\r
- if (wsect != sector) { /* Changed current window */\r
-#if !_FS_READONLY\r
- if (fs->wflag) { /* Write back dirty window if needed */\r
- if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK)\r
- return FR_DISK_ERR;\r
- fs->wflag = 0;\r
- if (wsect < (fs->fatbase + fs->sects_fat)) { /* In FAT area */\r
- BYTE nf;\r
- for (nf = fs->n_fats; nf > 1; nf--) { /* Refrect the change to all FAT copies */\r
- wsect += fs->sects_fat;\r
- disk_write(fs->drive, fs->win, wsect, 1);\r
- }\r
- }\r
- }\r
-#endif\r
- if (sector) {\r
- if (disk_read(fs->drive, fs->win, sector, 1) != RES_OK)\r
- return FR_DISK_ERR;\r
- fs->winsect = sector;\r
- }\r
- }\r
-\r
- return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Clean-up cached data */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-static\r
-FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */\r
- FATFS *fs /* File system object */\r
-)\r
-{\r
- FRESULT res;\r
-\r
-\r
- res = move_window(fs, 0);\r
- if (res == FR_OK) {\r
- /* Update FSInfo sector if needed */\r
- if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {\r
- fs->winsect = 0;\r
- mem_set(fs->win, 0, 512);\r
- ST_WORD(fs->win+BS_55AA, 0xAA55);\r
- ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);\r
- ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);\r
- ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);\r
- ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);\r
- disk_write(fs->drive, fs->win, fs->fsi_sector, 1);\r
- fs->fsi_flag = 0;\r
- }\r
- /* Make sure that no pending write process in the physical drive */\r
- if (disk_ioctl(fs->drive, CTRL_SYNC, (void*)NULL) != RES_OK)\r
- res = FR_DISK_ERR;\r
- }\r
-\r
- return res;\r
-}\r
-#endif\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* FAT access - Read value of a FAT entry */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-\r
-DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Interal error, Else:Cluster status */\r
- FATFS *fs, /* File system object */\r
- DWORD clst /* Cluster# to get the link information */\r
-)\r
-{\r
- UINT wc, bc;\r
- DWORD fsect;\r
-\r
-\r
- if (clst < 2 || clst >= fs->max_clust) /* Range check */\r
- return 1;\r
-\r
- fsect = fs->fatbase;\r
- switch (fs->fs_type) {\r
- case FS_FAT12 :\r
- bc = clst; bc += bc / 2;\r
- if (move_window(fs, fsect + (bc / SS(fs)))) break;\r
- wc = fs->win[bc & (SS(fs) - 1)]; bc++;\r
- if (move_window(fs, fsect + (bc / SS(fs)))) break;\r
- wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;\r
- return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);\r
-\r
- case FS_FAT16 :\r
- if (move_window(fs, fsect + (clst / (SS(fs) / 2)))) break;\r
- return LD_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)]);\r
-\r
- case FS_FAT32 :\r
- if (move_window(fs, fsect + (clst / (SS(fs) / 4)))) break;\r
- return LD_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;\r
- }\r
-\r
- return 0xFFFFFFFF; /* An error occured at the disk I/O layer */\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* FAT access - Change value of a FAT entry */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-\r
-FRESULT put_fat (\r
- FATFS *fs, /* File system object */\r
- DWORD clst, /* Cluster# to be changed in range of 2 to fs->max_clust - 1 */\r
- DWORD val /* New value to mark the cluster */\r
-)\r
-{\r
- UINT bc;\r
- BYTE *p;\r
- DWORD fsect;\r
- FRESULT res;\r
-\r
-\r
- if (clst < 2 || clst >= fs->max_clust) { /* Range check */\r
- res = FR_INT_ERR;\r
-\r
- } else {\r
- fsect = fs->fatbase;\r
- switch (fs->fs_type) {\r
- case FS_FAT12 :\r
- bc = clst; bc += bc / 2;\r
- res = move_window(fs, fsect + (bc / SS(fs)));\r
- if (res != FR_OK) break;\r
- p = &fs->win[bc & (SS(fs) - 1)];\r
- *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;\r
- bc++;\r
- fs->wflag = 1;\r
- res = move_window(fs, fsect + (bc / SS(fs)));\r
- if (res != FR_OK) break;\r
- p = &fs->win[bc & (SS(fs) - 1)];\r
- *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));\r
- break;\r
-\r
- case FS_FAT16 :\r
- res = move_window(fs, fsect + (clst / (SS(fs) / 2)));\r
- if (res != FR_OK) break;\r
- ST_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)], (WORD)val);\r
- break;\r
-\r
- case FS_FAT32 :\r
- res = move_window(fs, fsect + (clst / (SS(fs) / 4)));\r
- if (res != FR_OK) break;\r
- ST_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)], val);\r
- break;\r
-\r
- default :\r
- res = FR_INT_ERR;\r
- }\r
- fs->wflag = 1;\r
- }\r
-\r
- return res;\r
-}\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* FAT handling - Remove a cluster chain */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-static\r
-FRESULT remove_chain (\r
- FATFS *fs, /* File system object */\r
- DWORD clst /* Cluster# to remove a chain from */\r
-)\r
-{\r
- FRESULT res;\r
- DWORD nxt;\r
-\r
-\r
- if (clst < 2 || clst >= fs->max_clust) { /* Check the range of cluster# */\r
- res = FR_INT_ERR;\r
-\r
- } else {\r
- res = FR_OK;\r
- while (clst < fs->max_clust) { /* Not a last link? */\r
- nxt = get_fat(fs, clst); /* Get cluster status */\r
- if (nxt == 0) break; /* Empty cluster? */\r
- if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */\r
- if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */\r
- res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */\r
- if (res != FR_OK) break;\r
- if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */\r
- fs->free_clust++;\r
- fs->fsi_flag = 1;\r
- }\r
- clst = nxt; /* Next cluster */\r
- }\r
- }\r
-\r
- return res;\r
-}\r
-#endif\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* FAT handling - Stretch or Create a cluster chain */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-static\r
-DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */\r
- FATFS *fs, /* File system object */\r
- DWORD clst /* Cluster# to stretch. 0 means create a new chain. */\r
-)\r
-{\r
- DWORD cs, ncl, scl, mcl;\r
-\r
-\r
- mcl = fs->max_clust;\r
- if (clst == 0) { /* Create new chain */\r
- scl = fs->last_clust; /* Get suggested start point */\r
- if (scl == 0 || scl >= mcl) scl = 1;\r
- }\r
- else { /* Stretch existing chain */\r
- cs = get_fat(fs, clst); /* Check the cluster status */\r
- if (cs < 2) return 1; /* It is an invalid cluster */\r
- if (cs < mcl) return cs; /* It is already followed by next cluster */\r
- scl = clst;\r
- }\r
-\r
- ncl = scl; /* Start cluster */\r
- for (;;) {\r
- ncl++; /* Next cluster */\r
- if (ncl >= mcl) { /* Wrap around */\r
- ncl = 2;\r
- if (ncl > scl) return 0; /* No free custer */\r
- }\r
- cs = get_fat(fs, ncl); /* Get the cluster status */\r
- if (cs == 0) break; /* Found a free cluster */\r
- if (cs == 0xFFFFFFFF || cs == 1)/* An error occured */\r
- return cs;\r
- if (ncl == scl) return 0; /* No free custer */\r
- }\r
-\r
- if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "in use" */\r
- return 0xFFFFFFFF;\r
- if (clst != 0) { /* Link it to the previous one if needed */\r
- if (put_fat(fs, clst, ncl))\r
- return 0xFFFFFFFF;\r
- }\r
-\r
- fs->last_clust = ncl; /* Update FSINFO */\r
- if (fs->free_clust != 0xFFFFFFFF) {\r
- fs->free_clust--;\r
- fs->fsi_flag = 1;\r
- }\r
-\r
- return ncl; /* Return new cluster number */\r
-}\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Get sector# from cluster# */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-\r
-DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */\r
- FATFS *fs, /* File system object */\r
- DWORD clst /* Cluster# to be converted */\r
-)\r
-{\r
- clst -= 2;\r
- if (clst >= (fs->max_clust - 2)) return 0; /* Invalid cluster# */\r
- return clst * fs->csize + fs->database;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Directory handling - Seek directory index */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT dir_seek (\r
- DIR *dj, /* Pointer to directory object */\r
- WORD idx /* Directory index number */\r
-)\r
-{\r
- DWORD clst;\r
- WORD ic;\r
-\r
-\r
- dj->index = idx;\r
- clst = dj->sclust;\r
- if (clst == 1 || clst >= dj->fs->max_clust) /* Check start cluster range */\r
- return FR_INT_ERR;\r
- if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */\r
- clst = dj->fs->dirbase;\r
-\r
- if (clst == 0) { /* Static table */\r
- dj->clust = clst;\r
- if (idx >= dj->fs->n_rootdir) /* Index is out of range */\r
- return FR_INT_ERR;\r
- dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32); /* Sector# */\r
- }\r
- else { /* Dynamic table */\r
- ic = SS(dj->fs) / 32 * dj->fs->csize; /* Entries per cluster */\r
- while (idx >= ic) { /* Follow cluster chain */\r
- clst = get_fat(dj->fs, clst); /* Get next cluster */\r
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */\r
- if (clst < 2 || clst >= dj->fs->max_clust) /* Reached to end of table or int error */\r
- return FR_INT_ERR;\r
- idx -= ic;\r
- }\r
- dj->clust = clst;\r
- dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32); /* Sector# */\r
- }\r
-\r
- dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */\r
-\r
- return FR_OK; /* Seek succeeded */\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Directory handling - Move directory index next */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not streach */\r
- DIR *dj, /* Pointer to directory object */\r
- BOOL streach /* FALSE: Do not streach table, TRUE: Streach table if needed */\r
-)\r
-{\r
- DWORD clst;\r
- WORD i;\r
-\r
-\r
- i = dj->index + 1;\r
- if (!i || !dj->sect) /* Report EOT when index has reached 65535 */\r
- return FR_NO_FILE;\r
-\r
- if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */\r
- dj->sect++; /* Next sector */\r
-\r
- if (dj->clust == 0) { /* Static table */\r
- if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */\r
- return FR_NO_FILE;\r
- }\r
- else { /* Dynamic table */\r
- if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */\r
- clst = get_fat(dj->fs, dj->clust); /* Get next cluster */\r
- if (clst <= 1) return FR_INT_ERR;\r
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR;\r
- if (clst >= dj->fs->max_clust) { /* When it reached end of dynamic table */\r
-#if !_FS_READONLY\r
- BYTE c;\r
- if (!streach) return FR_NO_FILE; /* When do not streach, report EOT */\r
- clst = create_chain(dj->fs, dj->clust); /* Streach cluster chain */\r
- if (clst == 0) return FR_DENIED; /* No free cluster */\r
- if (clst == 1) return FR_INT_ERR;\r
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR;\r
- /* Clean-up streached table */\r
- if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */\r
- mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */\r
- dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */\r
- for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */\r
- dj->fs->wflag = 1;\r
- if (move_window(dj->fs, 0)) return FR_DISK_ERR;\r
- dj->fs->winsect++;\r
- }\r
- dj->fs->winsect -= c; /* Rewind window address */\r
-#else\r
- return FR_NO_FILE; /* Report EOT */\r
-#endif\r
- }\r
- dj->clust = clst; /* Initialize data for new cluster */\r
- dj->sect = clust2sect(dj->fs, clst);\r
- }\r
- }\r
- }\r
-\r
- dj->index = i;\r
- dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;\r
-\r
- return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */\r
-/*-----------------------------------------------------------------------*/\r
-#if _USE_LFN\r
-static\r
-const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */\r
-\r
-\r
-static\r
-BOOL cmp_lfn ( /* TRUE:Matched, FALSE:Not matched */\r
- WCHAR *lfnbuf, /* Pointer to the LFN to be compared */\r
- BYTE *dir /* Pointer to the directory entry containing a part of LFN */\r
-)\r
-{\r
- int i, s;\r
- WCHAR wc, uc;\r
-\r
-\r
- i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13; /* Get offset in the LFN buffer */\r
- s = 0; wc = 1;\r
- do {\r
- uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */\r
- if (wc) { /* Last char has not been processed */\r
- wc = ff_wtoupper(uc); /* Convert it to upper case */\r
- if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */\r
- return FALSE; /* Not matched */\r
- } else {\r
- if (uc != 0xFFFF) return FALSE; /* Check filler */\r
- }\r
- } while (++s < 13); /* Repeat until all chars in the entry are checked */\r
-\r
- if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */\r
- return FALSE;\r
-\r
- return TRUE; /* The part of LFN matched */\r
-}\r
-\r
-\r
-\r
-static\r
-BOOL pick_lfn ( /* TRUE:Succeeded, FALSE:Buffer overflow */\r
- WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */\r
- BYTE *dir /* Pointer to the directory entry */\r
-)\r
-{\r
- int i, s;\r
- WCHAR wc, uc;\r
-\r
-\r
- i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */\r
-\r
- s = 0; wc = 1;\r
- do {\r
- uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */\r
- if (wc) { /* Last char has not been processed */\r
- if (i >= _MAX_LFN) return FALSE; /* Buffer overflow? */\r
- lfnbuf[i++] = wc = uc; /* Store it */\r
- } else {\r
- if (uc != 0xFFFF) return FALSE; /* Check filler */\r
- }\r
- } while (++s < 13); /* Read all character in the entry */\r
-\r
- if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */\r
- if (i >= _MAX_LFN) return FALSE; /* Buffer overflow? */\r
- lfnbuf[i] = 0;\r
- }\r
-\r
- return TRUE;\r
-}\r
-\r
-\r
-#if !_FS_READONLY\r
-static\r
-void fit_lfn (\r
- const WCHAR *lfnbuf, /* Pointer to the LFN buffer */\r
- BYTE *dir, /* Pointer to the directory entry */\r
- BYTE ord, /* LFN order (1-20) */\r
- BYTE sum /* SFN sum */\r
-)\r
-{\r
- int i, s;\r
- WCHAR wc;\r
-\r
-\r
- dir[LDIR_Chksum] = sum; /* Set check sum */\r
- dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */\r
- dir[LDIR_Type] = 0;\r
- ST_WORD(dir+LDIR_FstClusLO, 0);\r
-\r
- i = (ord - 1) * 13; /* Get offset in the LFN buffer */\r
- s = wc = 0;\r
- do {\r
- if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */\r
- ST_WORD(dir+LfnOfs[s], wc); /* Put it */\r
- if (!wc) wc = 0xFFFF; /* Padding chars following last char */\r
- } while (++s < 13);\r
- if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40; /* Bottom LFN part is the start of LFN sequence */\r
- dir[LDIR_Ord] = ord; /* Set the LFN order */\r
-}\r
-\r
-#endif\r
-#endif\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Create numbered name */\r
-/*-----------------------------------------------------------------------*/\r
-#if _USE_LFN\r
-void gen_numname (\r
- BYTE *dst, /* Pointer to genartated SFN */\r
- const BYTE *src, /* Pointer to source SFN to be modified */\r
- const WCHAR *lfn, /* Pointer to LFN */\r
- WORD num /* Sequense number */\r
-)\r
-{\r
- char ns[8];\r
- int i, j;\r
-\r
-\r
- mem_cpy(dst, src, 11);\r
-\r
- if (num > 5) { /* On many collisions, generate a hash number instead of sequencial number */\r
- do num = (num >> 1) + (num << 15) + (WORD)*lfn++; while (*lfn);\r
- }\r
-\r
- /* itoa */\r
- i = 7;\r
- do {\r
- ns[i--] = (num % 10) + '0';\r
- num /= 10;\r
- } while (num);\r
- ns[i] = '~';\r
-\r
- /* Append the number */\r
- for (j = 0; j < i && dst[j] != ' '; j++) {\r
- if (IsDBCS1(dst[j])) {\r
- if (j == i - 1) break;\r
- j++;\r
- }\r
- }\r
- do {\r
- dst[j++] = (i < 8) ? ns[i++] : ' ';\r
- } while (j < 8);\r
-}\r
-#endif\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Calculate sum of an SFN */\r
-/*-----------------------------------------------------------------------*/\r
-#if _USE_LFN\r
-static\r
-BYTE sum_sfn (\r
- const BYTE *dir /* Ptr to directory entry */\r
-)\r
-{\r
- BYTE sum = 0;\r
- int n = 11;\r
-\r
- do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);\r
- return sum;\r
-}\r
-#endif\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Directory handling - Find an object in the directory */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT dir_find (\r
- DIR *dj /* Pointer to the directory object linked to the file name */\r
-)\r
-{\r
- FRESULT res;\r
- BYTE c, *dir;\r
-#if _USE_LFN\r
- BYTE a, ord, sum;\r
-#endif\r
-\r
- res = dir_seek(dj, 0); /* Rewind directory object */\r
- if (res != FR_OK) return res;\r
-\r
-#if _USE_LFN\r
- ord = sum = 0xFF;\r
-#endif\r
- do {\r
- res = move_window(dj->fs, dj->sect);\r
- if (res != FR_OK) break;\r
- dir = dj->dir; /* Ptr to the directory entry of current index */\r
- c = dir[DIR_Name];\r
- if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */\r
-#if _USE_LFN /* LFN configuration */\r
- a = dir[DIR_Attr] & AM_MASK;\r
- if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */\r
- ord = 0xFF;\r
- } else {\r
- if (a == AM_LFN) { /* An LFN entry is found */\r
- if (dj->lfn) {\r
- if (c & 0x40) { /* Is it start of LFN sequence? */\r
- sum = dir[LDIR_Chksum];\r
- c &= 0xBF; ord = c; /* LFN start order */\r
- dj->lfn_idx = dj->index;\r
- }\r
- /* Check validity of the LFN entry and compare it with given name */\r
- ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;\r
- }\r
- } else { /* An SFN entry is found */\r
- if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */\r
- ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */\r
- if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */\r
- }\r
- }\r
-#else /* Non LFN configuration */\r
- if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */\r
- break;\r
-#endif\r
- res = dir_next(dj, FALSE); /* Next entry */\r
- } while (res == FR_OK);\r
-\r
- return res;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Read an object from the directory */\r
-/*-----------------------------------------------------------------------*/\r
-#if _FS_MINIMIZE <= 1\r
-static\r
-FRESULT dir_read (\r
- DIR *dj /* Pointer to the directory object that pointing the entry to be read */\r
-)\r
-{\r
- FRESULT res;\r
- BYTE c, *dir;\r
-#if _USE_LFN\r
- BYTE a, ord = 0xFF, sum = 0xFF;\r
-#endif\r
-\r
- res = FR_NO_FILE;\r
- while (dj->sect) {\r
- res = move_window(dj->fs, dj->sect);\r
- if (res != FR_OK) break;\r
- dir = dj->dir; /* Ptr to the directory entry of current index */\r
- c = dir[DIR_Name];\r
- if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */\r
-#if _USE_LFN /* LFN configuration */\r
- a = dir[DIR_Attr] & AM_MASK;\r
- if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */\r
- ord = 0xFF;\r
- } else {\r
- if (a == AM_LFN) { /* An LFN entry is found */\r
- if (c & 0x40) { /* Is it start of LFN sequence? */\r
- sum = dir[LDIR_Chksum];\r
- c &= 0xBF; ord = c;\r
- dj->lfn_idx = dj->index;\r
- }\r
- /* Check LFN validity and capture it */\r
- ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;\r
- } else { /* An SFN entry is found */\r
- if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */\r
- dj->lfn_idx = 0xFFFF; /* It has no LFN. */\r
- break;\r
- }\r
- }\r
-#else /* Non LFN configuration */\r
- if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */\r
- break;\r
-#endif\r
- res = dir_next(dj, FALSE); /* Next entry */\r
- if (res != FR_OK) break;\r
- }\r
-\r
- if (res != FR_OK) dj->sect = 0;\r
-\r
- return res;\r
-}\r
-#endif\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Register an object to the directory */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY\r
-static\r
-FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */\r
- DIR *dj /* Target directory with object name to be created */\r
-)\r
-{\r
- FRESULT res;\r
- BYTE c, *dir;\r
-#if _USE_LFN /* LFN configuration */\r
- WORD n, ne, is;\r
- BYTE sn[12], *fn, sum;\r
- WCHAR *lfn;\r
-\r
-\r
- fn = dj->fn; lfn = dj->lfn;\r
- mem_cpy(sn, fn, 12);\r
-\r
- if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */\r
-\r
- if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */\r
- fn[NS] = 0; dj->lfn = NULL; /* Find only SFN */\r
- for (n = 1; n < 100; n++) {\r
- gen_numname(fn, sn, lfn, n); /* Generate a numbered name */\r
- res = dir_find(dj); /* Check if the name collides with existing SFN */\r
- if (res != FR_OK) break;\r
- }\r
- if (n == 100) return FR_DENIED; /* Abort if too many collisions */\r
- if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */\r
- fn[NS] = sn[NS]; dj->lfn = lfn;\r
- }\r
-\r
- if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve reserve an SFN + LFN entries. */\r
- for (ne = 0; lfn[ne]; ne++) ;\r
- ne = (ne + 25) / 13;\r
- } else { /* Otherwise reserve only an SFN entry. */\r
- ne = 1;\r
- }\r
-\r
- /* Reserve contiguous entries */\r
- res = dir_seek(dj, 0);\r
- if (res != FR_OK) return res;\r
- n = is = 0;\r
- do {\r
- res = move_window(dj->fs, dj->sect);\r
- if (res != FR_OK) break;\r
- c = *dj->dir; /* Check the entry status */\r
- if (c == 0xE5 || c == 0) { /* Is it a blank entry? */\r
- if (n == 0) is = dj->index; /* First index of the contigulus entry */\r
- if (++n == ne) break; /* A contiguous entry that requiered count is found */\r
- } else {\r
- n = 0; /* Not a blank entry. Restart to search */\r
- }\r
- res = dir_next(dj, TRUE); /* Next entry with table streach */\r
- } while (res == FR_OK);\r
-\r
- if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */\r
- res = dir_seek(dj, is);\r
- if (res == FR_OK) {\r
- sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */\r
- ne--;\r
- do { /* Store LFN entries in bottom first */\r
- res = move_window(dj->fs, dj->sect);\r
- if (res != FR_OK) break;\r
- fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);\r
- dj->fs->wflag = 1;\r
- res = dir_next(dj, FALSE); /* Next entry */\r
- } while (res == FR_OK && --ne);\r
- }\r
- }\r
-\r
-#else /* Non LFN configuration */\r
- res = dir_seek(dj, 0);\r
- if (res == FR_OK) {\r
- do { /* Find a blank entry for the SFN */\r
- res = move_window(dj->fs, dj->sect);\r
- if (res != FR_OK) break;\r
- c = *dj->dir;\r
- if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */\r
- res = dir_next(dj, TRUE); /* Next entry with table streach */\r
- } while (res == FR_OK);\r
- }\r
-#endif\r
-\r
- if (res == FR_OK) { /* Initialize the SFN entry */\r
- res = move_window(dj->fs, dj->sect);\r
- if (res == FR_OK) {\r
- dir = dj->dir;\r
- mem_set(dir, 0, 32); /* Clean the entry */\r
- mem_cpy(dir, dj->fn, 11); /* Put SFN */\r
- dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */\r
- dj->fs->wflag = 1;\r
- }\r
- }\r
-\r
- return res;\r
-}\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Remove an object from the directory */\r
-/*-----------------------------------------------------------------------*/\r
-#if !_FS_READONLY && !_FS_MINIMIZE\r
-static\r
-FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */\r
- DIR *dj /* Directory object pointing the entry to be removed */\r
-)\r
-{\r
- FRESULT res;\r
-#if _USE_LFN /* LFN configuration */\r
- WORD i;\r
-\r
- i = dj->index; /* SFN index */\r
- res = dir_seek(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */\r
- if (res == FR_OK) {\r
- do {\r
- res = move_window(dj->fs, dj->sect);\r
- if (res != FR_OK) break;\r
- *dj->dir = 0xE5; /* Mark the entry "deleted" */\r
- dj->fs->wflag = 1;\r
- if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */\r
- res = dir_next(dj, FALSE); /* Next entry */\r
- } while (res == FR_OK);\r
- if (res == FR_NO_FILE) res = FR_INT_ERR;\r
- }\r
-\r
-#else /* Non LFN configuration */\r
- res = dir_seek(dj, dj->index);\r
- if (res == FR_OK) {\r
- res = move_window(dj->fs, dj->sect);\r
- if (res == FR_OK) {\r
- *dj->dir = 0xE5; /* Mark the entry "deleted" */\r
- dj->fs->wflag = 1;\r
- }\r
- }\r
-#endif\r
-\r
- return res;\r
-}\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Pick a segment and create the object name in directory form */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT create_name (\r
- DIR *dj, /* Pointer to the directory object */\r
- const XCHAR **path /* Pointer to pointer to the segment in the path string */\r
-)\r
-{\r
-#ifdef _EXCVT\r
- static const BYTE cvt[] = _EXCVT;\r
-#endif\r
-\r
-#if _USE_LFN /* LFN configuration */\r
- BYTE b, cf;\r
- WCHAR w, *lfn;\r
- int i, ni, si, di;\r
- const XCHAR *p;\r
-\r
- /* Create LFN in Unicode */\r
- si = di = 0;\r
- p = *path;\r
- lfn = dj->lfn;\r
- for (;;) {\r
- w = p[si++]; /* Get a character */\r
- if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */\r
- if (di >= _MAX_LFN) /* Reject too long name */\r
- return FR_INVALID_NAME;\r
-#if !_LFN_UNICODE\r
- w &= 0xFF;\r
- if (IsDBCS1(w)) { /* If it is a DBC 1st byte */\r
- b = p[si++]; /* Get 2nd byte */\r
- if (!IsDBCS2(b)) /* Reject invalid code for DBC */\r
- return FR_INVALID_NAME;\r
- w = (w << 8) + b;\r
- }\r
- w = ff_convert(w, 1); /* Convert OEM to Unicode */\r
- if (!w) return FR_INVALID_NAME; /* Reject invalid code */\r
-#endif\r
- if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */\r
- return FR_INVALID_NAME;\r
- lfn[di++] = w; /* Store the Unicode char */\r
- }\r
- *path = &p[si]; /* Rerurn pointer to the next segment */\r
- cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */\r
-#if _FS_RPATH\r
- if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */\r
- (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {\r
- lfn[di] = 0;\r
- for (i = 0; i < 11; i++)\r
- dj->fn[i] = (i < di) ? '.' : ' ';\r
- dj->fn[i] = cf | NS_DOT; /* This is a dot entry */\r
- return FR_OK;\r
- }\r
-#endif\r
- while (di) { /* Strip trailing spaces and dots */\r
- w = lfn[di - 1];\r
- if (w != ' ' && w != '.') break;\r
- di--;\r
- }\r
- if (!di) return FR_INVALID_NAME; /* Reject null string */\r
-\r
- lfn[di] = 0; /* LFN is created */\r
-\r
- /* Create SFN in directory form */\r
- mem_set(dj->fn, ' ', 11);\r
- for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */\r
- if (si) cf |= NS_LOSS | NS_LFN;\r
- while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */\r
-\r
- b = i = 0; ni = 8;\r
- for (;;) {\r
- w = lfn[si++]; /* Get an LFN char */\r
- if (!w) break; /* Break on enf of the LFN */\r
- if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */\r
- cf |= NS_LOSS | NS_LFN; continue;\r
- }\r
-\r
- if (i >= ni || si == di) { /* Extension or end of SFN */\r
- if (ni == 11) { /* Long extension */\r
- cf |= NS_LOSS | NS_LFN; break;\r
- }\r
- if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */\r
- if (si > di) break; /* No extension */\r
- si = di; i = 8; ni = 11; /* Enter extension section */\r
- b <<= 2; continue;\r
- }\r
-\r
- if (w >= 0x80) { /* Non ASCII char */\r
-#ifdef _EXCVT\r
- w = ff_convert(w, 0); /* Unicode -> OEM code */\r
- if (w) w = cvt[w - 0x80]; /* Convert extended char to upper (SBCS) */\r
-#else\r
- w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */\r
-#endif\r
- cf |= NS_LFN; /* Force create LFN entry */\r
- }\r
-\r
- if (_DF1S && w >= 0x100) { /* Double byte char */\r
- if (i >= ni - 1) {\r
- cf |= NS_LOSS | NS_LFN; i = ni; continue;\r
- }\r
- dj->fn[i++] = (BYTE)(w >> 8);\r
- } else { /* Single byte char */\r
- if (!w || chk_chr("+,;[=]", w)) { /* Replace illegal chars for SFN */\r
- w = '_'; cf |= NS_LOSS | NS_LFN; /* Lossy conversion */\r
- } else {\r
- if (IsUpper(w)) { /* ASCII large capital */\r
- b |= 2;\r
- } else {\r
- if (IsLower(w)) { /* ASCII small capital */\r
- b |= 1; w -= 0x20;\r
- }\r
- }\r
- }\r
- }\r
- dj->fn[i++] = (BYTE)w;\r
- }\r
-\r
- if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05; /* If the first char collides with deleted mark, replace it with 0x05 */\r
-\r
- if (ni == 8) b <<= 2;\r
- if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */\r
- cf |= NS_LFN;\r
- if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */\r
- if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */\r
- if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */\r
- }\r
-\r
- dj->fn[NS] = cf; /* SFN is created */\r
-\r
- return FR_OK;\r
-\r
-\r
-#else /* Non-LFN configuration */\r
- BYTE b, c, d, *sfn;\r
- int ni, si, i;\r
- const char *p;\r
-\r
- /* Create file name in directory form */\r
- sfn = dj->fn;\r
- mem_set(sfn, ' ', 11);\r
- si = i = b = 0; ni = 8;\r
- p = *path;\r
-#if _FS_RPATH\r
- if (p[si] == '.') { /* Is this a dot entry? */\r
- for (;;) {\r
- c = p[si++];\r
- if (c != '.' || si >= 3) break;\r
- sfn[i++] = c;\r
- }\r
- if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;\r
- *path = &p[si]; /* Rerurn pointer to the next segment */\r
- sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */\r
- return FR_OK;\r
- }\r
-#endif\r
- for (;;) {\r
- c = p[si++];\r
- if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */\r
- if (c == '.' || i >= ni) {\r
- if (ni != 8 || c != '.') return FR_INVALID_NAME;\r
- i = 8; ni = 11;\r
- b <<= 2; continue;\r
- }\r
- if (c >= 0x80) { /* Extended char */\r
-#ifdef _EXCVT\r
- c = cvt[c - 0x80]; /* Convert extend char (SBCS) */\r
-#else\r
- b |= 3; /* Eliminate NT flag if ext char is exist */\r
-#if !_DF1S /* ASCII only cfg */\r
- return FR_INVALID_NAME;\r
-#endif\r
-#endif\r
- }\r
- if (IsDBCS1(c)) { /* DBC 1st byte? */\r
- d = p[si++]; /* Get 2nd byte */\r
- if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */\r
- return FR_INVALID_NAME;\r
- sfn[i++] = c;\r
- sfn[i++] = d;\r
- } else { /* Single byte code */\r
- if (chk_chr(" \"*+,[=]|\x7F", c)) /* Reject illegal chrs for SFN */\r
- return FR_INVALID_NAME;\r
- if (IsUpper(c)) { /* ASCII large capital? */\r
- b |= 2;\r
- } else {\r
- if (IsLower(c)) { /* ASCII small capital? */\r
- b |= 1; c -= 0x20;\r
- }\r
- }\r
- sfn[i++] = c;\r
- }\r
- }\r
- *path = &p[si]; /* Rerurn pointer to the next segment */\r
- c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */\r
-\r
- if (!i) return FR_INVALID_NAME; /* Reject null string */\r
- if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */\r
-\r
- if (ni == 8) b <<= 2;\r
- if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Extension has only small capital) */\r
- if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Filename has only small capital) */\r
-\r
- sfn[NS] = c; /* Store NT flag, File name is created */\r
-\r
- return FR_OK;\r
-#endif\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Get file information from directory entry */\r
-/*-----------------------------------------------------------------------*/\r
-#if _FS_MINIMIZE <= 1\r
-static\r
-void get_fileinfo ( /* No return code */\r
- DIR *dj, /* Pointer to the directory object */\r
- FILINFO *fno /* Pointer to the file information to be filled */\r
-)\r
-{\r
- int i;\r
- BYTE c, nt, *dir;\r
- char *p;\r
-\r
-\r
- p = fno->fname;\r
- if (dj->sect) {\r
- dir = dj->dir;\r
- nt = dir[DIR_NTres]; /* NT flag */\r
- for (i = 0; i < 8; i++) { /* Copy name body */\r
- c = dir[i];\r
- if (c == ' ') break;\r
- if (c == 0x05) c = 0xE5;\r
- if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;\r
- *p++ = c;\r
- }\r
- if (dir[8] != ' ') { /* Copy name extension */\r
- *p++ = '.';\r
- for (i = 8; i < 11; i++) {\r
- c = dir[i];\r
- if (c == ' ') break;\r
- if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;\r
- *p++ = c;\r
- }\r
- }\r
- fno->fattrib = dir[DIR_Attr]; /* Attribute */\r
- fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */\r
- fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */\r
- fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */\r
- }\r
- *p = 0;\r
-\r
-#if _USE_LFN\r
- if (fno->lfname) {\r
- XCHAR *tp = fno->lfname;\r
- WCHAR w, *lfn;\r
-\r
- i = 0;\r
- if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */\r
- lfn = dj->lfn;\r
- while ((w = *lfn++) != 0) { /* Get an LFN char */\r
-#if !_LFN_UNICODE\r
- w = ff_convert(w, 0); /* Unicode -> OEM conversion */\r
- if (!w) { i = 0; break; } /* Could not convert, no LFN */\r
- if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC */\r
- tp[i++] = (XCHAR)(w >> 8);\r
-#endif\r
- if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */\r
- tp[i++] = (XCHAR)w;\r
- }\r
- }\r
- tp[i] = 0; /* Terminator */\r
- }\r
-#endif\r
-}\r
-#endif /* _FS_MINIMIZE <= 1 */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Follow a file path */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */\r
- DIR *dj, /* Directory object to return last directory and found object */\r
- const XCHAR *path /* Full-path string to find a file or directory */\r
-)\r
-{\r
- FRESULT res;\r
- BYTE *dir, last;\r
-\r
-\r
- while (!_USE_LFN && *path == ' ') path++; /* Skip leading spaces */\r
-#if _FS_RPATH\r
- if (*path == '/' || *path == '\\') { /* There is a heading separator */\r
- path++; dj->sclust = 0; /* Strip it and start from the root dir */\r
- } else { /* No heading saparator */\r
- dj->sclust = dj->fs->cdir; /* Start from the current dir */\r
- }\r
-#else\r
- if (*path == '/' || *path == '\\') /* Strip heading separator if exist */\r
- path++;\r
- dj->sclust = 0; /* Start from the root dir */\r
-#endif\r
-\r
- if ((UINT)*path < ' ') { /* Null path means the start directory itself */\r
- res = dir_seek(dj, 0);\r
- dj->dir = NULL;\r
-\r
- } else { /* Follow path */\r
- for (;;) {\r
- res = create_name(dj, &path); /* Get a segment */\r
- if (res != FR_OK) break;\r
- res = dir_find(dj); /* Find it */\r
- last = *(dj->fn+NS) & NS_LAST;\r
- if (res != FR_OK) { /* Could not find the object */\r
- if (res == FR_NO_FILE && !last)\r
- res = FR_NO_PATH;\r
- break;\r
- }\r
- if (last) break; /* Last segment match. Function completed. */\r
- dir = dj->dir; /* There is next segment. Follow the sub directory */\r
- if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */\r
- res = FR_NO_PATH; break;\r
- }\r
- dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
- }\r
- }\r
-\r
- return res;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Load boot record and check if it is an FAT boot record */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */\r
- FATFS *fs, /* File system object */\r
- DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */\r
-)\r
-{\r
- if (disk_read(fs->drive, fs->win, sect, 1) != RES_OK) /* Load boot record */\r
- return 3;\r
- if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */\r
- return 2;\r
-\r
- if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */\r
- return 0;\r
- if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)\r
- return 0;\r
-\r
- return 1;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Make sure that the file system is valid */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-\r
-FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occured */\r
- const XCHAR **path, /* Pointer to pointer to the path name (drive number) */\r
- FATFS **rfs, /* Pointer to pointer to the found file system object */\r
- BYTE chk_wp /* !=0: Check media write protection for write access */\r
-)\r
-{\r
- BYTE fmt, *tbl;\r
- UINT vol;\r
- DSTATUS stat;\r
- DWORD bsect, fsize, tsect, mclst;\r
- const XCHAR *p = *path;\r
- FATFS *fs;\r
-\r
- /* Get logical drive number from the path name */\r
- vol = p[0] - '0'; /* Is there a drive number? */\r
- if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */\r
- p += 2; *path = p; /* Return pointer to the path name */\r
- } else { /* No drive number is given */\r
-#if _FS_RPATH\r
- vol = Drive; /* Use current drive */\r
-#else\r
- vol = 0; /* Use drive 0 */\r
-#endif\r
- }\r
-\r
- /* Check if the logical drive is valid or not */\r
- if (vol >= _DRIVES) /* Is the drive number valid? */\r
- return FR_INVALID_DRIVE;\r
- *rfs = fs = FatFs[vol]; /* Returen pointer to the corresponding file system object */\r
- if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */\r
-\r
- ENTER_FF(fs); /* Lock file system */\r
-\r
- if (fs->fs_type) { /* If the logical drive has been mounted */\r
- stat = disk_status(fs->drive);\r
- if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */\r
-#if !_FS_READONLY\r
- if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */\r
- return FR_WRITE_PROTECTED;\r
-#endif\r
- return FR_OK; /* The file system object is valid */\r
- }\r
- }\r
-\r
- /* The logical drive must be mounted. Following code attempts to mount the volume */\r
-\r
- fs->fs_type = 0; /* Clear the file system object */\r
- fs->drive = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */\r
- stat = disk_initialize(fs->drive); /* Initialize low level disk I/O layer */\r
- if (stat & STA_NOINIT) /* Check if the drive is ready */\r
- return FR_NOT_READY;\r
-#if _MAX_SS != 512 /* Get disk sector size if needed */\r
- if (disk_ioctl(fs->drive, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)\r
- return FR_NO_FILESYSTEM;\r
-#endif\r
-#if !_FS_READONLY\r
- if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */\r
- return FR_WRITE_PROTECTED;\r
-#endif\r
- /* Search FAT partition on the drive */\r
- fmt = check_fs(fs, bsect = 0); /* Check sector 0 as an SFD format */\r
- if (fmt == 1) { /* Not an FAT boot record, it may be patitioned */\r
- /* Check a partition listed in top of the partition table */\r
- tbl = &fs->win[MBR_Table + LD2PT(vol) * 16]; /* Partition table */\r
- if (tbl[4]) { /* Is the partition existing? */\r
- bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */\r
- fmt = check_fs(fs, bsect); /* Check the partition */\r
- }\r
- }\r
- if (fmt == 3) return FR_DISK_ERR;\r
- if (fmt || LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* No valid FAT patition is found */\r
- return FR_NO_FILESYSTEM;\r
-\r
- /* Initialize the file system object */\r
- fsize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */\r
- if (!fsize) fsize = LD_DWORD(fs->win+BPB_FATSz32);\r
- fs->sects_fat = fsize;\r
- fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */\r
- fsize *= fs->n_fats; /* (Number of sectors in FAT area) */\r
- fs->fatbase = bsect + LD_WORD(fs->win+BPB_RsvdSecCnt); /* FAT start sector (lba) */\r
- fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */\r
- fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Nmuber of root directory entries */\r
- tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */\r
- if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);\r
- fs->max_clust = mclst = (tsect /* Last cluster# + 1 (Number of clusters + 2) */\r
- - LD_WORD(fs->win+BPB_RsvdSecCnt) - fsize - fs->n_rootdir / (SS(fs)/32)\r
- ) / fs->csize + 2;\r
-\r
- fmt = FS_FAT12; /* Determine the FAT sub type */\r
- if (mclst >= 0xFF7) fmt = FS_FAT16; /* Number of clusters >= 0xFF5 */\r
- if (mclst >= 0xFFF7) fmt = FS_FAT32; /* Number of clusters >= 0xFFF5 */\r
-\r
- if (fmt == FS_FAT32)\r
- fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */\r
- else\r
- fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */\r
- fs->database = fs->fatbase + fsize + fs->n_rootdir / (SS(fs)/32); /* Data start sector (lba) */\r
-\r
-#if !_FS_READONLY\r
- /* Initialize allocation information */\r
- fs->free_clust = 0xFFFFFFFF;\r
- fs->wflag = 0;\r
- /* Get fsinfo if needed */\r
- if (fmt == FS_FAT32) {\r
- fs->fsi_flag = 0;\r
- fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);\r
- if (disk_read(fs->drive, fs->win, fs->fsi_sector, 1) == RES_OK &&\r
- LD_WORD(fs->win+BS_55AA) == 0xAA55 &&\r
- LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&\r
- LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {\r
- fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);\r
- fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);\r
- }\r
- }\r
-#endif\r
- fs->fs_type = fmt; /* FAT sub-type */\r
- fs->winsect = 0; /* Invalidate sector cache */\r
-#if _FS_RPATH\r
- fs->cdir = 0; /* Current directory (root dir) */\r
-#endif\r
- fs->id = ++Fsid; /* File system mount ID */\r
-\r
- return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Check if the file/dir object is valid or not */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */\r
- FATFS *fs, /* Pointer to the file system object */\r
- WORD id /* Member id of the target object to be checked */\r
-)\r
-{\r
- if (!fs || !fs->fs_type || fs->id != id)\r
- return FR_INVALID_OBJECT;\r
-\r
- ENTER_FF(fs); /* Lock file system */\r
-\r
- if (disk_status(fs->drive) & STA_NOINIT)\r
- return FR_NOT_READY;\r
-\r
- return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*--------------------------------------------------------------------------\r
-\r
- Public Functions\r
-\r
---------------------------------------------------------------------------*/\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Mount/Unmount a Locical Drive */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_mount (\r
- BYTE vol, /* Logical drive number to be mounted/unmounted */\r
- FATFS *fs /* Pointer to new file system object (NULL for unmount)*/\r
-)\r
-{\r
- FATFS *rfs;\r
-\r
-\r
- if (vol >= _DRIVES) /* Check if the drive number is valid */\r
- return FR_INVALID_DRIVE;\r
- rfs = FatFs[vol]; /* Get current fs object */\r
-\r
- if (rfs) {\r
-#if _FS_REENTRANT /* Discard sync object of the current volume */\r
- if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;\r
-#endif\r
- rfs->fs_type = 0; /* Clear old fs object */\r
- }\r
-\r
- if (fs) {\r
- fs->fs_type = 0; /* Clear new fs object */\r
-#if _FS_REENTRANT /* Create sync object for the new volume */\r
- if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;\r
-#endif\r
- }\r
- FatFs[vol] = fs; /* Register new fs object */\r
-\r
- return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Open or Create a File */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_open (\r
- FIL *fp, /* Pointer to the blank file object */\r
- const XCHAR *path, /* Pointer to the file name */\r
- BYTE mode /* Access mode and file open mode flags */\r
-)\r
-{\r
- FRESULT res;\r
- DIR dj;\r
- NAMEBUF(sfn, lfn);\r
- BYTE *dir;\r
-\r
-\r
- fp->fs = NULL; /* Clear file object */\r
-#if !_FS_READONLY\r
- mode &= (FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW);\r
- res = chk_mounted(&path, &dj.fs, (BYTE)(mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)));\r
-#else\r
- mode &= FA_READ;\r
- res = chk_mounted(&path, &dj.fs, 0);\r
-#endif\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
- INITBUF(dj, sfn, lfn);\r
- res = follow_path(&dj, path); /* Follow the file path */\r
-\r
-#if !_FS_READONLY\r
- /* Create or Open a file */\r
- if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {\r
- DWORD ps, cl;\r
-\r
- if (res != FR_OK) { /* No file, create new */\r
- if (res == FR_NO_FILE) /* There is no file to open, create a new entry */\r
- res = dir_register(&dj);\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
- mode |= FA_CREATE_ALWAYS;\r
- dir = dj.dir; /* Created entry (SFN entry) */\r
- }\r
- else { /* Any object is already existing */\r
- if (mode & FA_CREATE_NEW) /* Cannot create new */\r
- LEAVE_FF(dj.fs, FR_EXIST);\r
- dir = dj.dir;\r
- if (!dir || (dir[DIR_Attr] & (AM_RDO | AM_DIR))) /* Cannot overwrite it (R/O or DIR) */\r
- LEAVE_FF(dj.fs, FR_DENIED);\r
- if (mode & FA_CREATE_ALWAYS) { /* Resize it to zero on over write mode */\r
- cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */\r
- ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */\r
- ST_WORD(dir+DIR_FstClusLO, 0);\r
- ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */\r
- dj.fs->wflag = 1;\r
- ps = dj.fs->winsect; /* Remove the cluster chain */\r
- if (cl) {\r
- res = remove_chain(dj.fs, cl);\r
- if (res) LEAVE_FF(dj.fs, res);\r
- dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */\r
- }\r
- res = move_window(dj.fs, ps);\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
- }\r
- }\r
- if (mode & FA_CREATE_ALWAYS) {\r
- dir[DIR_Attr] = 0; /* Reset attribute */\r
- ps = get_fattime();\r
- ST_DWORD(dir+DIR_CrtTime, ps); /* Created time */\r
- dj.fs->wflag = 1;\r
- mode |= FA__WRITTEN; /* Set file changed flag */\r
- }\r
- }\r
- /* Open an existing file */\r
- else {\r
-#endif /* !_FS_READONLY */\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */\r
- dir = dj.dir;\r
- if (!dir || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */\r
- LEAVE_FF(dj.fs, FR_NO_FILE);\r
-#if !_FS_READONLY\r
- if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */\r
- LEAVE_FF(dj.fs, FR_DENIED);\r
- }\r
- fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */\r
- fp->dir_ptr = dj.dir;\r
-#endif\r
- fp->flag = mode; /* File access mode */\r
- fp->org_clust = /* File start cluster */\r
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
- fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */\r
- fp->fptr = 0; fp->csect = 255; /* File pointer */\r
- fp->dsect = 0;\r
- fp->fs = dj.fs; fp->id = dj.fs->id; /* Owner file system object of the file */\r
-\r
- LEAVE_FF(dj.fs, FR_OK);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Read File */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_read (\r
- FIL *fp, /* Pointer to the file object */\r
- void *buff, /* Pointer to data buffer */\r
- UINT btr, /* Number of bytes to read */\r
- UINT *br /* Pointer to number of bytes read */\r
-)\r
-{\r
- FRESULT res;\r
- DWORD clst, sect, remain;\r
- UINT rcnt, cc;\r
- BYTE *rbuff = buff;\r
-\r
-\r
- *br = 0; /* Initialize bytes read */\r
-\r
- res = validate(fp->fs, fp->id); /* Check validity of the object */\r
- if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
- if (fp->flag & FA__ERROR) /* Check abort flag */\r
- LEAVE_FF(fp->fs, FR_INT_ERR);\r
- if (!(fp->flag & FA_READ)) /* Check access mode */\r
- LEAVE_FF(fp->fs, FR_DENIED);\r
- remain = fp->fsize - fp->fptr;\r
- if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */\r
-\r
- for ( ; btr; /* Repeat until all data transferred */\r
- rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {\r
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */\r
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */\r
- clst = (fp->fptr == 0) ? /* On the top of the file? */\r
- fp->org_clust : get_fat(fp->fs, fp->curr_clust);\r
- if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);\r
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
- fp->curr_clust = clst; /* Update current cluster */\r
- fp->csect = 0; /* Reset sector offset in the cluster */\r
- }\r
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */\r
- if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
- sect += fp->csect;\r
- cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */\r
- if (cc) { /* Read maximum contiguous sectors directly */\r
- if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */\r
- cc = fp->fs->csize - fp->csect;\r
- if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)\r
- ABORT(fp->fs, FR_DISK_ERR);\r
-#if !_FS_READONLY && _FS_MINIMIZE <= 2\r
-#if _FS_TINY\r
- if (fp->fs->wflag && fp->fs->winsect - sect < cc) /* Replace one of the read sectors with cached data if it contains a dirty sector */\r
- mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));\r
-#else\r
- if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc) /* Replace one of the read sectors with cached data if it contains a dirty sector */\r
- mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));\r
-#endif\r
-#endif\r
- fp->csect += (BYTE)cc; /* Next sector address in the cluster */\r
- rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */\r
- continue;\r
- }\r
-#if !_FS_TINY\r
-#if !_FS_READONLY\r
- if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */\r
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)\r
- ABORT(fp->fs, FR_DISK_ERR);\r
- fp->flag &= ~FA__DIRTY;\r
- }\r
-#endif\r
- if (fp->dsect != sect) { /* Fill sector buffer with file data */\r
- if (disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)\r
- ABORT(fp->fs, FR_DISK_ERR);\r
- }\r
-#endif\r
- fp->dsect = sect;\r
- fp->csect++; /* Next sector address in the cluster */\r
- }\r
- rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */\r
- if (rcnt > btr) rcnt = btr;\r
-#if _FS_TINY\r
- if (move_window(fp->fs, fp->dsect)) /* Move sector window */\r
- ABORT(fp->fs, FR_DISK_ERR);\r
- mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */\r
-#else\r
- mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */\r
-#endif\r
- }\r
-\r
- LEAVE_FF(fp->fs, FR_OK);\r
-}\r
-\r
-\r
-\r
-\r
-#if !_FS_READONLY\r
-/*-----------------------------------------------------------------------*/\r
-/* Write File */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_write (\r
- FIL *fp, /* Pointer to the file object */\r
- const void *buff, /* Pointer to the data to be written */\r
- UINT btw, /* Number of bytes to write */\r
- UINT *bw /* Pointer to number of bytes written */\r
-)\r
-{\r
- FRESULT res;\r
- DWORD clst, sect;\r
- UINT wcnt, cc;\r
- const BYTE *wbuff = buff;\r
-\r
-\r
- *bw = 0; /* Initialize bytes written */\r
-\r
- res = validate(fp->fs, fp->id); /* Check validity of the object */\r
- if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
- if (fp->flag & FA__ERROR) /* Check abort flag */\r
- LEAVE_FF(fp->fs, FR_INT_ERR);\r
- if (!(fp->flag & FA_WRITE)) /* Check access mode */\r
- LEAVE_FF(fp->fs, FR_DENIED);\r
- if (fp->fsize + btw < fp->fsize) btw = 0; /* File size cannot reach 4GB */\r
-\r
- for ( ; btw; /* Repeat until all data transferred */\r
- wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {\r
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */\r
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */\r
- if (fp->fptr == 0) { /* On the top of the file? */\r
- clst = fp->org_clust; /* Follow from the origin */\r
- if (clst == 0) /* When there is no cluster chain, */\r
- fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */\r
- } else { /* Middle or end of the file */\r
- clst = create_chain(fp->fs, fp->curr_clust); /* Follow or streach cluster chain */\r
- }\r
- if (clst == 0) break; /* Could not allocate a new cluster (disk full) */\r
- if (clst == 1) ABORT(fp->fs, FR_INT_ERR);\r
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
- fp->curr_clust = clst; /* Update current cluster */\r
- fp->csect = 0; /* Reset sector address in the cluster */\r
- }\r
-#if _FS_TINY\r
- if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */\r
- ABORT(fp->fs, FR_DISK_ERR);\r
-#else\r
- if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */\r
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)\r
- ABORT(fp->fs, FR_DISK_ERR);\r
- fp->flag &= ~FA__DIRTY;\r
- }\r
-#endif\r
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */\r
- if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
- sect += fp->csect;\r
- cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */\r
- if (cc) { /* Write maximum contiguous sectors directly */\r
- if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */\r
- cc = fp->fs->csize - fp->csect;\r
- if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)\r
- ABORT(fp->fs, FR_DISK_ERR);\r
-#if _FS_TINY\r
- if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */\r
- mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));\r
- fp->fs->wflag = 0;\r
- }\r
-#else\r
- if (fp->dsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */\r
- mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));\r
- fp->flag &= ~FA__DIRTY;\r
- }\r
-#endif\r
- fp->csect += (BYTE)cc; /* Next sector address in the cluster */\r
- wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */\r
- continue;\r
- }\r
-#if _FS_TINY\r
- if (fp->fptr >= fp->fsize) { /* Avoid silly buffer filling at growing edge */\r
- if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);\r
- fp->fs->winsect = sect;\r
- }\r
-#else\r
- if (fp->dsect != sect) { /* Fill sector buffer with file data */\r
- if (fp->fptr < fp->fsize &&\r
- disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)\r
- ABORT(fp->fs, FR_DISK_ERR);\r
- }\r
-#endif\r
- fp->dsect = sect;\r
- fp->csect++; /* Next sector address in the cluster */\r
- }\r
- wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */\r
- if (wcnt > btw) wcnt = btw;\r
-#if _FS_TINY\r
- if (move_window(fp->fs, fp->dsect)) /* Move sector window */\r
- ABORT(fp->fs, FR_DISK_ERR);\r
- mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */\r
- fp->fs->wflag = 1;\r
-#else\r
- mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */\r
- fp->flag |= FA__DIRTY;\r
-#endif\r
- }\r
-\r
- if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */\r
- fp->flag |= FA__WRITTEN; /* Set file changed flag */\r
-\r
- LEAVE_FF(fp->fs, FR_OK);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Synchronize the File Object */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_sync (\r
- FIL *fp /* Pointer to the file object */\r
-)\r
-{\r
- FRESULT res;\r
- DWORD tim;\r
- BYTE *dir;\r
-\r
-\r
- res = validate(fp->fs, fp->id); /* Check validity of the object */\r
- if (res == FR_OK) {\r
- if (fp->flag & FA__WRITTEN) { /* Has the file been written? */\r
-#if !_FS_TINY /* Write-back dirty buffer */\r
- if (fp->flag & FA__DIRTY) {\r
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)\r
- LEAVE_FF(fp->fs, FR_DISK_ERR);\r
- fp->flag &= ~FA__DIRTY;\r
- }\r
-#endif\r
- /* Update the directory entry */\r
- res = move_window(fp->fs, fp->dir_sect);\r
- if (res == FR_OK) {\r
- dir = fp->dir_ptr;\r
- dir[DIR_Attr] |= AM_ARC; /* Set archive bit */\r
- ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */\r
- ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */\r
- ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);\r
- tim = get_fattime(); /* Updated time */\r
- ST_DWORD(dir+DIR_WrtTime, tim);\r
- fp->flag &= ~FA__WRITTEN;\r
- fp->fs->wflag = 1;\r
- res = sync(fp->fs);\r
- }\r
- }\r
- }\r
-\r
- LEAVE_FF(fp->fs, res);\r
-}\r
-\r
-#endif /* !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Close File */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_close (\r
- FIL *fp /* Pointer to the file object to be closed */\r
-)\r
-{\r
- FRESULT res;\r
-\r
-\r
-#if _FS_READONLY\r
- res = validate(fp->fs, fp->id);\r
- if (res == FR_OK) fp->fs = NULL;\r
- LEAVE_FF(fp->fs, res);\r
-#else\r
- res = f_sync(fp);\r
- if (res == FR_OK) fp->fs = NULL;\r
- return res;\r
-#endif\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Change Current Drive/Directory */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-#if _FS_RPATH\r
-\r
-FRESULT f_chdrive (\r
- BYTE drv /* Drive number */\r
-)\r
-{\r
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;\r
-\r
- Drive = drv;\r
-\r
- return FR_OK;\r
-}\r
-\r
-\r
-\r
-\r
-FRESULT f_chdir (\r
- const XCHAR *path /* Pointer to the directory path */\r
-)\r
-{\r
- FRESULT res;\r
- DIR dj;\r
- NAMEBUF(sfn, lfn);\r
- BYTE *dir;\r
-\r
-\r
- res = chk_mounted(&path, &dj.fs, 0);\r
- if (res == FR_OK) {\r
- INITBUF(dj, sfn, lfn);\r
- res = follow_path(&dj, path); /* Follow the file path */\r
- if (res == FR_OK) { /* Follow completed */\r
- dir = dj.dir; /* Pointer to the entry */\r
- if (!dir) {\r
- dj.fs->cdir = 0; /* No entry (root dir) */\r
- } else {\r
- if (dir[DIR_Attr] & AM_DIR) /* Reached to the dir */\r
- dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
- else\r
- res = FR_NO_PATH; /* Could not reach the dir (it is a file) */\r
- }\r
- }\r
- if (res == FR_NO_FILE) res = FR_NO_PATH;\r
- }\r
-\r
- LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-#endif\r
-\r
-\r
-\r
-#if _FS_MINIMIZE <= 2\r
-/*-----------------------------------------------------------------------*/\r
-/* Seek File R/W Pointer */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_lseek (\r
- FIL *fp, /* Pointer to the file object */\r
- DWORD ofs /* File pointer from top of file */\r
-)\r
-{\r
- FRESULT res;\r
- DWORD clst, bcs, nsect, ifptr;\r
-\r
-\r
- res = validate(fp->fs, fp->id); /* Check validity of the object */\r
- if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
- if (fp->flag & FA__ERROR) /* Check abort flag */\r
- LEAVE_FF(fp->fs, FR_INT_ERR);\r
- if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */\r
-#if !_FS_READONLY\r
- && !(fp->flag & FA_WRITE)\r
-#endif\r
- ) ofs = fp->fsize;\r
-\r
- ifptr = fp->fptr;\r
- fp->fptr = nsect = 0; fp->csect = 255;\r
- if (ofs > 0) {\r
- bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */\r
- if (ifptr > 0 &&\r
- (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */\r
- fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */\r
- ofs -= fp->fptr;\r
- clst = fp->curr_clust;\r
- } else { /* When seek to back cluster, */\r
- clst = fp->org_clust; /* start from the first cluster */\r
-#if !_FS_READONLY\r
- if (clst == 0) { /* If no cluster chain, create a new chain */\r
- clst = create_chain(fp->fs, 0);\r
- if (clst == 1) ABORT(fp->fs, FR_INT_ERR);\r
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
- fp->org_clust = clst;\r
- }\r
-#endif\r
- fp->curr_clust = clst;\r
- }\r
- if (clst != 0) {\r
- while (ofs > bcs) { /* Cluster following loop */\r
-#if !_FS_READONLY\r
- if (fp->flag & FA_WRITE) { /* Check if in write mode or not */\r
- clst = create_chain(fp->fs, clst); /* Force streached if in write mode */\r
- if (clst == 0) { /* When disk gets full, clip file size */\r
- ofs = bcs; break;\r
- }\r
- } else\r
-#endif\r
- clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */\r
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
- if (clst <= 1 || clst >= fp->fs->max_clust) ABORT(fp->fs, FR_INT_ERR);\r
- fp->curr_clust = clst;\r
- fp->fptr += bcs;\r
- ofs -= bcs;\r
- }\r
- fp->fptr += ofs;\r
- fp->csect = (BYTE)(ofs / SS(fp->fs)); /* Sector offset in the cluster */\r
- if (ofs % SS(fp->fs)) {\r
- nsect = clust2sect(fp->fs, clst); /* Current sector */\r
- if (!nsect) ABORT(fp->fs, FR_INT_ERR);\r
- nsect += fp->csect;\r
- fp->csect++;\r
- }\r
- }\r
- }\r
- if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {\r
-#if !_FS_TINY\r
-#if !_FS_READONLY\r
- if (fp->flag & FA__DIRTY) { /* Write-back dirty buffer if needed */\r
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)\r
- ABORT(fp->fs, FR_DISK_ERR);\r
- fp->flag &= ~FA__DIRTY;\r
- }\r
-#endif\r
- if (disk_read(fp->fs->drive, fp->buf, nsect, 1) != RES_OK)\r
- ABORT(fp->fs, FR_DISK_ERR);\r
-#endif\r
- fp->dsect = nsect;\r
- }\r
-#if !_FS_READONLY\r
- if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */\r
- fp->fsize = fp->fptr;\r
- fp->flag |= FA__WRITTEN;\r
- }\r
-#endif\r
-\r
- LEAVE_FF(fp->fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-#if _FS_MINIMIZE <= 1\r
-/*-----------------------------------------------------------------------*/\r
-/* Create a Directroy Object */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_opendir (\r
- DIR *dj, /* Pointer to directory object to create */\r
- const XCHAR *path /* Pointer to the directory path */\r
-)\r
-{\r
- FRESULT res;\r
- NAMEBUF(sfn, lfn);\r
- BYTE *dir;\r
-\r
-\r
- res = chk_mounted(&path, &dj->fs, 0);\r
- if (res == FR_OK) {\r
- INITBUF((*dj), sfn, lfn);\r
- res = follow_path(dj, path); /* Follow the path to the directory */\r
- if (res == FR_OK) { /* Follow completed */\r
- dir = dj->dir;\r
- if (dir) { /* It is not the root dir */\r
- if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */\r
- dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
- } else { /* The object is not a directory */\r
- res = FR_NO_PATH;\r
- }\r
- }\r
- if (res == FR_OK) {\r
- dj->id = dj->fs->id;\r
- res = dir_seek(dj, 0); /* Rewind dir */\r
- }\r
- }\r
- if (res == FR_NO_FILE) res = FR_NO_PATH;\r
- }\r
-\r
- LEAVE_FF(dj->fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Read Directory Entry in Sequense */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_readdir (\r
- DIR *dj, /* Pointer to the open directory object */\r
- FILINFO *fno /* Pointer to file information to return */\r
-)\r
-{\r
- FRESULT res;\r
- NAMEBUF(sfn, lfn);\r
-\r
-\r
- res = validate(dj->fs, dj->id); /* Check validity of the object */\r
- if (res == FR_OK) {\r
- INITBUF((*dj), sfn, lfn);\r
- if (!fno) {\r
- res = dir_seek(dj, 0);\r
- } else {\r
- res = dir_read(dj);\r
- if (res == FR_NO_FILE) {\r
- dj->sect = 0;\r
- res = FR_OK;\r
- }\r
- if (res == FR_OK) { /* A valid entry is found */\r
- get_fileinfo(dj, fno); /* Get the object information */\r
- res = dir_next(dj, FALSE); /* Increment index for next */\r
- if (res == FR_NO_FILE) {\r
- dj->sect = 0;\r
- res = FR_OK;\r
- }\r
- }\r
- }\r
- }\r
-\r
- LEAVE_FF(dj->fs, res);\r
-}\r
-\r
-\r
-\r
-#if _FS_MINIMIZE == 0\r
-/*-----------------------------------------------------------------------*/\r
-/* Get File Status */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_stat (\r
- const XCHAR *path, /* Pointer to the file path */\r
- FILINFO *fno /* Pointer to file information to return */\r
-)\r
-{\r
- FRESULT res;\r
- DIR dj;\r
- NAMEBUF(sfn, lfn);\r
-\r
-\r
- res = chk_mounted(&path, &dj.fs, 0);\r
- if (res == FR_OK) {\r
- INITBUF(dj, sfn, lfn);\r
- res = follow_path(&dj, path); /* Follow the file path */\r
- if (res == FR_OK) { /* Follwo completed */\r
- if (dj.dir) /* Found an object */\r
- get_fileinfo(&dj, fno);\r
- else /* It is root dir */\r
- res = FR_INVALID_NAME;\r
- }\r
- }\r
-\r
- LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-#if !_FS_READONLY\r
-/*-----------------------------------------------------------------------*/\r
-/* Get Number of Free Clusters */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_getfree (\r
- const XCHAR *path, /* Pointer to the logical drive number (root dir) */\r
- DWORD *nclst, /* Pointer to the variable to return number of free clusters */\r
- FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */\r
-)\r
-{\r
- FRESULT res;\r
- DWORD n, clst, sect, stat;\r
- UINT i;\r
- BYTE fat, *p;\r
-\r
-\r
- /* Get drive number */\r
- res = chk_mounted(&path, fatfs, 0);\r
- if (res != FR_OK) LEAVE_FF(*fatfs, res);\r
-\r
- /* If number of free cluster is valid, return it without cluster scan. */\r
- if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {\r
- *nclst = (*fatfs)->free_clust;\r
- LEAVE_FF(*fatfs, FR_OK);\r
- }\r
-\r
- /* Get number of free clusters */\r
- fat = (*fatfs)->fs_type;\r
- n = 0;\r
- if (fat == FS_FAT12) {\r
- clst = 2;\r
- do {\r
- stat = get_fat(*fatfs, clst);\r
- if (stat == 0xFFFFFFFF) LEAVE_FF(*fatfs, FR_DISK_ERR);\r
- if (stat == 1) LEAVE_FF(*fatfs, FR_INT_ERR);\r
- if (stat == 0) n++;\r
- } while (++clst < (*fatfs)->max_clust);\r
- } else {\r
- clst = (*fatfs)->max_clust;\r
- sect = (*fatfs)->fatbase;\r
- i = 0; p = 0;\r
- do {\r
- if (!i) {\r
- res = move_window(*fatfs, sect++);\r
- if (res != FR_OK)\r
- LEAVE_FF(*fatfs, res);\r
- p = (*fatfs)->win;\r
- i = SS(*fatfs);\r
- }\r
- if (fat == FS_FAT16) {\r
- if (LD_WORD(p) == 0) n++;\r
- p += 2; i -= 2;\r
- } else {\r
- if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;\r
- p += 4; i -= 4;\r
- }\r
- } while (--clst);\r
- }\r
- (*fatfs)->free_clust = n;\r
- if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;\r
- *nclst = n;\r
-\r
- LEAVE_FF(*fatfs, FR_OK);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Truncate File */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_truncate (\r
- FIL *fp /* Pointer to the file object */\r
-)\r
-{\r
- FRESULT res;\r
- DWORD ncl;\r
-\r
-\r
- res = validate(fp->fs, fp->id); /* Check validity of the object */\r
- if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
- if (fp->flag & FA__ERROR) /* Check abort flag */\r
- LEAVE_FF(fp->fs, FR_INT_ERR);\r
- if (!(fp->flag & FA_WRITE)) /* Check access mode */\r
- LEAVE_FF(fp->fs, FR_DENIED);\r
-\r
- if (fp->fsize > fp->fptr) {\r
- fp->fsize = fp->fptr; /* Set file size to current R/W point */\r
- fp->flag |= FA__WRITTEN;\r
- if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */\r
- res = remove_chain(fp->fs, fp->org_clust);\r
- fp->org_clust = 0;\r
- } else { /* When truncate a part of the file, remove remaining clusters */\r
- ncl = get_fat(fp->fs, fp->curr_clust);\r
- res = FR_OK;\r
- if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;\r
- if (ncl == 1) res = FR_INT_ERR;\r
- if (res == FR_OK && ncl < fp->fs->max_clust) {\r
- res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);\r
- if (res == FR_OK) res = remove_chain(fp->fs, ncl);\r
- }\r
- }\r
- }\r
- if (res != FR_OK) fp->flag |= FA__ERROR;\r
-\r
- LEAVE_FF(fp->fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Delete a File or Directory */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_unlink (\r
- const XCHAR *path /* Pointer to the file or directory path */\r
-)\r
-{\r
- FRESULT res;\r
- DIR dj, sdj;\r
- NAMEBUF(sfn, lfn);\r
- BYTE *dir;\r
- DWORD dclst;\r
-\r
-\r
- res = chk_mounted(&path, &dj.fs, 1);\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-\r
- INITBUF(dj, sfn, lfn);\r
- res = follow_path(&dj, path); /* Follow the file path */\r
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))\r
- res = FR_INVALID_NAME;\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */\r
-\r
- dir = dj.dir;\r
- if (!dir) /* Is it the root directory? */\r
- LEAVE_FF(dj.fs, FR_INVALID_NAME);\r
- if (dir[DIR_Attr] & AM_RDO) /* Is it a R/O object? */\r
- LEAVE_FF(dj.fs, FR_DENIED);\r
- dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);\r
-\r
- if (dir[DIR_Attr] & AM_DIR) { /* It is a sub-directory */\r
- if (dclst < 2) LEAVE_FF(dj.fs, FR_INT_ERR);\r
- mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */\r
- sdj.sclust = dclst;\r
- res = dir_seek(&sdj, 2);\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
- res = dir_read(&sdj);\r
- if (res == FR_OK) res = FR_DENIED; /* Not empty sub-dir */\r
- if (res != FR_NO_FILE) LEAVE_FF(dj.fs, res);\r
- }\r
-\r
- res = dir_remove(&dj); /* Remove directory entry */\r
- if (res == FR_OK) {\r
- if (dclst)\r
- res = remove_chain(dj.fs, dclst); /* Remove the cluster chain */\r
- if (res == FR_OK) res = sync(dj.fs);\r
- }\r
-\r
- LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Create a Directory */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_mkdir (\r
- const XCHAR *path /* Pointer to the directory path */\r
-)\r
-{\r
- FRESULT res;\r
- DIR dj;\r
- NAMEBUF(sfn, lfn);\r
- BYTE *dir, n;\r
- DWORD dsect, dclst, pclst, tim;\r
-\r
-\r
- res = chk_mounted(&path, &dj.fs, 1);\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
-\r
- INITBUF(dj, sfn, lfn);\r
- res = follow_path(&dj, path); /* Follow the file path */\r
- if (res == FR_OK) res = FR_EXIST; /* Any file or directory is already existing */\r
- if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))\r
- res = FR_INVALID_NAME;\r
- if (res != FR_NO_FILE) /* Any error occured */\r
- LEAVE_FF(dj.fs, res);\r
-\r
- dclst = create_chain(dj.fs, 0); /* Allocate a new cluster for new directory table */\r
- res = FR_OK;\r
- if (dclst == 0) res = FR_DENIED;\r
- if (dclst == 1) res = FR_INT_ERR;\r
- if (dclst == 0xFFFFFFFF) res = FR_DISK_ERR;\r
- if (res == FR_OK)\r
- res = move_window(dj.fs, 0);\r
- if (res != FR_OK) LEAVE_FF(dj.fs, res);\r
- dsect = clust2sect(dj.fs, dclst);\r
-\r
- dir = dj.fs->win; /* Initialize the new directory table */\r
- mem_set(dir, 0, SS(dj.fs));\r
- mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */\r
- dir[DIR_Name] = '.';\r
- dir[DIR_Attr] = AM_DIR;\r
- tim = get_fattime();\r
- ST_DWORD(dir+DIR_WrtTime, tim);\r
- ST_WORD(dir+DIR_FstClusLO, dclst);\r
- ST_WORD(dir+DIR_FstClusHI, dclst >> 16);\r
- mem_cpy(dir+32, dir, 32); /* Create ".." entry */\r
- dir[33] = '.';\r
- pclst = dj.sclust;\r
- if (dj.fs->fs_type == FS_FAT32 && pclst == dj.fs->dirbase)\r
- pclst = 0;\r
- ST_WORD(dir+32+DIR_FstClusLO, pclst);\r
- ST_WORD(dir+32+DIR_FstClusHI, pclst >> 16);\r
- for (n = 0; n < dj.fs->csize; n++) { /* Write dot entries and clear left sectors */\r
- dj.fs->winsect = dsect++;\r
- dj.fs->wflag = 1;\r
- res = move_window(dj.fs, 0);\r
- if (res) LEAVE_FF(dj.fs, res);\r
- mem_set(dir, 0, SS(dj.fs));\r
- }\r
-\r
- res = dir_register(&dj);\r
- if (res != FR_OK) {\r
- remove_chain(dj.fs, dclst);\r
- } else {\r
- dir = dj.dir;\r
- dir[DIR_Attr] = AM_DIR; /* Attribute */\r
- ST_DWORD(dir+DIR_WrtTime, tim); /* Crated time */\r
- ST_WORD(dir+DIR_FstClusLO, dclst); /* Table start cluster */\r
- ST_WORD(dir+DIR_FstClusHI, dclst >> 16);\r
- dj.fs->wflag = 1;\r
- res = sync(dj.fs);\r
- }\r
-\r
- LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Change File Attribute */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_chmod (\r
- const XCHAR *path, /* Pointer to the file path */\r
- BYTE value, /* Attribute bits */\r
- BYTE mask /* Attribute mask to change */\r
-)\r
-{\r
- FRESULT res;\r
- DIR dj;\r
- NAMEBUF(sfn, lfn);\r
- BYTE *dir;\r
-\r
-\r
- res = chk_mounted(&path, &dj.fs, 1);\r
- if (res == FR_OK) {\r
- INITBUF(dj, sfn, lfn);\r
- res = follow_path(&dj, path); /* Follow the file path */\r
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))\r
- res = FR_INVALID_NAME;\r
- if (res == FR_OK) {\r
- dir = dj.dir;\r
- if (!dir) { /* Is it a root directory? */\r
- res = FR_INVALID_NAME;\r
- } else { /* File or sub directory */\r
- mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */\r
- dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */\r
- dj.fs->wflag = 1;\r
- res = sync(dj.fs);\r
- }\r
- }\r
- }\r
-\r
- LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Change Timestamp */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_utime (\r
- const XCHAR *path, /* Pointer to the file/directory name */\r
- const FILINFO *fno /* Pointer to the timestamp to be set */\r
-)\r
-{\r
- FRESULT res;\r
- DIR dj;\r
- NAMEBUF(sfn, lfn);\r
- BYTE *dir;\r
-\r
-\r
- res = chk_mounted(&path, &dj.fs, 1);\r
- if (res == FR_OK) {\r
- INITBUF(dj, sfn, lfn);\r
- res = follow_path(&dj, path); /* Follow the file path */\r
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))\r
- res = FR_INVALID_NAME;\r
- if (res == FR_OK) {\r
- dir = dj.dir;\r
- if (!dir) { /* Root directory */\r
- res = FR_INVALID_NAME;\r
- } else { /* File or sub-directory */\r
- ST_WORD(dir+DIR_WrtTime, fno->ftime);\r
- ST_WORD(dir+DIR_WrtDate, fno->fdate);\r
- dj.fs->wflag = 1;\r
- res = sync(dj.fs);\r
- }\r
- }\r
- }\r
-\r
- LEAVE_FF(dj.fs, res);\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Rename File/Directory */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-FRESULT f_rename (\r
- const XCHAR *path_old, /* Pointer to the old name */\r
- const XCHAR *path_new /* Pointer to the new name */\r
-)\r
-{\r
- FRESULT res;\r
- DIR dj_old, dj_new;\r
- NAMEBUF(sfn, lfn);\r
- BYTE buf[21], *dir;\r
- DWORD dw;\r
-\r
-\r
- INITBUF(dj_old, sfn, lfn);\r
- res = chk_mounted(&path_old, &dj_old.fs, 1);\r
- if (res == FR_OK) {\r
- dj_new.fs = dj_old.fs;\r
- res = follow_path(&dj_old, path_old); /* Check old object */\r
- if (_FS_RPATH && res == FR_OK && (dj_old.fn[NS] & NS_DOT))\r
- res = FR_INVALID_NAME;\r
- }\r
- if (res != FR_OK) LEAVE_FF(dj_old.fs, res); /* The old object is not found */\r
-\r
- if (!dj_old.dir) LEAVE_FF(dj_old.fs, FR_NO_FILE); /* Is root dir? */\r
- mem_cpy(buf, dj_old.dir+DIR_Attr, 21); /* Save the object information */\r
-\r
- mem_cpy(&dj_new, &dj_old, sizeof(DIR));\r
- res = follow_path(&dj_new, path_new); /* Check new object */\r
- if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */\r
- if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */\r
- res = dir_register(&dj_new); /* Register the new object */\r
- if (res == FR_OK) {\r
- dir = dj_new.dir; /* Copy object information into new entry */\r
- mem_cpy(dir+13, buf+2, 19);\r
- dir[DIR_Attr] = buf[0] | AM_ARC;\r
- dj_old.fs->wflag = 1;\r
- if (dir[DIR_Attr] & AM_DIR) { /* Update .. entry in the directory if needed */\r
- dw = clust2sect(dj_new.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));\r
- if (!dw) {\r
- res = FR_INT_ERR;\r
- } else {\r
- res = move_window(dj_new.fs, dw);\r
- dir = dj_new.fs->win+32;\r
- if (res == FR_OK && dir[1] == '.') {\r
- dw = (dj_new.fs->fs_type == FS_FAT32 && dj_new.sclust == dj_new.fs->dirbase) ? 0 : dj_new.sclust;\r
- ST_WORD(dir+DIR_FstClusLO, dw);\r
- ST_WORD(dir+DIR_FstClusHI, dw >> 16);\r
- dj_new.fs->wflag = 1;\r
- }\r
- }\r
- }\r
- if (res == FR_OK) {\r
- res = dir_remove(&dj_old); /* Remove old entry */\r
- if (res == FR_OK)\r
- res = sync(dj_old.fs);\r
- }\r
- }\r
- }\r
-\r
- LEAVE_FF(dj_old.fs, res);\r
-}\r
-\r
-#endif /* !_FS_READONLY */\r
-#endif /* _FS_MINIMIZE == 0 */\r
-#endif /* _FS_MINIMIZE <= 1 */\r
-#endif /* _FS_MINIMIZE <= 2 */\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Forward data to the stream directly (Available on only _FS_TINY cfg) */\r
-/*-----------------------------------------------------------------------*/\r
-#if _USE_FORWARD && _FS_TINY\r
-\r
-FRESULT f_forward (\r
- FIL *fp, /* Pointer to the file object */\r
- UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */\r
- UINT btr, /* Number of bytes to forward */\r
- UINT *bf /* Pointer to number of bytes forwarded */\r
-)\r
-{\r
- FRESULT res;\r
- DWORD remain, clst, sect;\r
- UINT rcnt;\r
-\r
-\r
- *bf = 0;\r
-\r
- res = validate(fp->fs, fp->id); /* Check validity of the object */\r
- if (res != FR_OK) LEAVE_FF(fp->fs, res);\r
- if (fp->flag & FA__ERROR) /* Check error flag */\r
- LEAVE_FF(fp->fs, FR_INT_ERR);\r
- if (!(fp->flag & FA_READ)) /* Check access mode */\r
- LEAVE_FF(fp->fs, FR_DENIED);\r
-\r
- remain = fp->fsize - fp->fptr;\r
- if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */\r
-\r
- for ( ; btr && (*func)(NULL, 0); /* Repeat until all data transferred or stream becomes busy */\r
- fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {\r
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */\r
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */\r
- clst = (fp->fptr == 0) ? /* On the top of the file? */\r
- fp->org_clust : get_fat(fp->fs, fp->curr_clust);\r
- if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);\r
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);\r
- fp->curr_clust = clst; /* Update current cluster */\r
- fp->csect = 0; /* Reset sector address in the cluster */\r
- }\r
- fp->csect++; /* Next sector address in the cluster */\r
- }\r
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */\r
- if (!sect) ABORT(fp->fs, FR_INT_ERR);\r
- sect += fp->csect - 1;\r
- if (move_window(fp->fs, sect)) /* Move sector window */\r
- ABORT(fp->fs, FR_DISK_ERR);\r
- fp->dsect = sect;\r
- rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */\r
- if (rcnt > btr) rcnt = btr;\r
- rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);\r
- if (!rcnt) ABORT(fp->fs, FR_INT_ERR);\r
- }\r
-\r
- LEAVE_FF(fp->fs, FR_OK);\r
-}\r
-#endif /* _USE_FORWARD */\r
-\r
-\r
-\r
-#if _USE_MKFS && !_FS_READONLY\r
-/*-----------------------------------------------------------------------*/\r
-/* Create File System on the Drive */\r
-/*-----------------------------------------------------------------------*/\r
-#define N_ROOTDIR 512 /* Multiple of 32 and <= 2048 */\r
-#define N_FATS 1 /* 1 or 2 */\r
-#define MAX_SECTOR 131072000UL /* Maximum partition size */\r
-#define MIN_SECTOR 2000UL /* Minimum partition size */\r
-\r
-\r
-FRESULT f_mkfs (\r
- BYTE drv, /* Logical drive number */\r
- BYTE partition, /* Partitioning rule 0:FDISK, 1:SFD */\r
- WORD allocsize /* Allocation unit size [bytes] */\r
-)\r
-{\r
- static const DWORD sstbl[] = { 2048000, 1024000, 512000, 256000, 128000, 64000, 32000, 16000, 8000, 4000, 0 };\r
- static const WORD cstbl[] = { 32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512 };\r
- BYTE fmt, m, *tbl;\r
- DWORD b_part, b_fat, b_dir, b_data; /* Area offset (LBA) */\r
- DWORD n_part, n_rsv, n_fat, n_dir; /* Area size */\r
- DWORD n_clst, d, n;\r
- WORD as;\r
- FATFS *fs;\r
- DSTATUS stat;\r
-\r
-\r
- /* Check validity of the parameters */\r
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;\r
- if (partition >= 2) return FR_MKFS_ABORTED;\r
-\r
- /* Check mounted drive and clear work area */\r
- fs = FatFs[drv];\r
- if (!fs) return FR_NOT_ENABLED;\r
- fs->fs_type = 0;\r
- drv = LD2PD(drv);\r
-\r
- /* Get disk statics */\r
- stat = disk_initialize(drv);\r
- if (stat & STA_NOINIT) return FR_NOT_READY;\r
- if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;\r
-#if _MAX_SS != 512 /* Get disk sector size */\r
- if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK\r
- || SS(fs) > _MAX_SS)\r
- return FR_MKFS_ABORTED;\r
-#endif\r
- if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)\r
- return FR_MKFS_ABORTED;\r
- if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;\r
- b_part = (!partition) ? 63 : 0; /* Boot sector */\r
- n_part -= b_part;\r
- for (d = 512; d <= 32768U && d != allocsize; d <<= 1) ; /* Check validity of the allocation unit size */\r
- if (d != allocsize) allocsize = 0;\r
- if (!allocsize) { /* Auto selection of cluster size */\r
- d = n_part;\r
- for (as = SS(fs); as > 512U; as >>= 1) d >>= 1;\r
- for (n = 0; d < sstbl[n]; n++) ;\r
- allocsize = cstbl[n];\r
- }\r
- if (allocsize < SS(fs)) allocsize = SS(fs);\r
-\r
- allocsize /= SS(fs); /* Number of sectors per cluster */\r
-\r
- /* Pre-compute number of clusters and FAT type */\r
- n_clst = n_part / allocsize;\r
- fmt = FS_FAT12;\r
- if (n_clst >= 0xFF5) fmt = FS_FAT16;\r
- if (n_clst >= 0xFFF5) fmt = FS_FAT32;\r
-\r
- /* Determine offset and size of FAT structure */\r
- switch (fmt) {\r
- case FS_FAT12:\r
- n_fat = ((n_clst * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);\r
- n_rsv = 1 + partition;\r
- n_dir = N_ROOTDIR * 32 / SS(fs);\r
- break;\r
- case FS_FAT16:\r
- n_fat = ((n_clst * 2) + 4 + SS(fs) - 1) / SS(fs);\r
- n_rsv = 1 + partition;\r
- n_dir = N_ROOTDIR * 32 / SS(fs);\r
- break;\r
- default:\r
- n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);\r
- n_rsv = 33 - partition;\r
- n_dir = 0;\r
- }\r
- b_fat = b_part + n_rsv; /* FATs start sector */\r
- b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */\r
- b_data = b_dir + n_dir; /* Data start sector */\r
-\r
- /* Align data start sector to erase block boundary (for flash memory media) */\r
- if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_MKFS_ABORTED;\r
- n = (b_data + n - 1) & ~(n - 1);\r
- n_fat += (n - b_data) / N_FATS;\r
- /* b_dir and b_data are no longer used below */\r
-\r
- /* Determine number of cluster and final check of validity of the FAT type */\r
- n_clst = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;\r
- if ( (fmt == FS_FAT16 && n_clst < 0xFF5)\r
- || (fmt == FS_FAT32 && n_clst < 0xFFF5))\r
- return FR_MKFS_ABORTED;\r
-\r
- /* Create partition table if needed */\r
- if (!partition) {\r
- DWORD n_disk = b_part + n_part;\r
-\r
- mem_set(fs->win, 0, SS(fs));\r
- tbl = fs->win+MBR_Table;\r
- ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */\r
- if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */\r
- n_disk = n_disk / 63 / 255;\r
- tbl[7] = (BYTE)n_disk;\r
- tbl[6] = (BYTE)((n_disk >> 2) | 63);\r
- } else {\r
- ST_WORD(&tbl[6], 0xFFFF);\r
- }\r
- tbl[5] = 254;\r
- if (fmt != FS_FAT32) /* System ID */\r
- tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06;\r
- else\r
- tbl[4] = 0x0c;\r
- ST_DWORD(tbl+8, 63); /* Partition start in LBA */\r
- ST_DWORD(tbl+12, n_part); /* Partition size in LBA */\r
- ST_WORD(tbl+64, 0xAA55); /* Signature */\r
- if (disk_write(drv, fs->win, 0, 1) != RES_OK)\r
- return FR_DISK_ERR;\r
- partition = 0xF8;\r
- } else {\r
- partition = 0xF0;\r
- }\r
-\r
- /* Create boot record */\r
- tbl = fs->win; /* Clear buffer */\r
- mem_set(tbl, 0, SS(fs));\r
- ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */\r
- ST_WORD(tbl+BPB_BytsPerSec, SS(fs)); /* Sector size */\r
- tbl[BPB_SecPerClus] = (BYTE)allocsize; /* Sectors per cluster */\r
- ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */\r
- tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */\r
- ST_WORD(tbl+BPB_RootEntCnt, SS(fs) / 32 * n_dir); /* Number of rootdir entries */\r
- if (n_part < 0x10000) { /* Number of total sectors */\r
- ST_WORD(tbl+BPB_TotSec16, n_part);\r
- } else {\r
- ST_DWORD(tbl+BPB_TotSec32, n_part);\r
- }\r
- tbl[BPB_Media] = partition; /* Media descripter */\r
- ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */\r
- ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */\r
- ST_DWORD(tbl+BPB_HiddSec, b_part); /* Hidden sectors */\r
- n = get_fattime(); /* Use current time as a VSN */\r
- if (fmt != FS_FAT32) {\r
- ST_DWORD(tbl+BS_VolID, n); /* Volume serial number */\r
- ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of secters per FAT */\r
- tbl[BS_DrvNum] = 0x80; /* Drive number */\r
- tbl[BS_BootSig] = 0x29; /* Extended boot signature */\r
- mem_cpy(tbl+BS_VolLab, "NO NAME FAT ", 19); /* Volume lavel, FAT signature */\r
- } else {\r
- ST_DWORD(tbl+BS_VolID32, n); /* Volume serial number */\r
- ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of secters per FAT */\r
- ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory cluster (2) */\r
- ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (bs+1) */\r
- ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (bs+6) */\r
- tbl[BS_DrvNum32] = 0x80; /* Drive number */\r
- tbl[BS_BootSig32] = 0x29; /* Extended boot signature */\r
- mem_cpy(tbl+BS_VolLab32, "NO NAME FAT32 ", 19); /* Volume lavel, FAT signature */\r
- }\r
- ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature */\r
- if (SS(fs) > 512U) {\r
- ST_WORD(tbl+SS(fs)-2, 0xAA55);\r
- }\r
- if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)\r
- return FR_DISK_ERR;\r
- if (fmt == FS_FAT32)\r
- disk_write(drv, tbl, b_part+6, 1);\r
-\r
- /* Initialize FAT area */\r
- for (m = 0; m < N_FATS; m++) {\r
- mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */\r
- if (fmt != FS_FAT32) {\r
- n = (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;\r
- n |= partition;\r
- ST_DWORD(tbl, n); /* Reserve cluster #0-1 (FAT12/16) */\r
- } else {\r
- ST_DWORD(tbl+0, 0xFFFFFFF8); /* Reserve cluster #0-1 (FAT32) */\r
- ST_DWORD(tbl+4, 0xFFFFFFFF);\r
- ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */\r
- }\r
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)\r
- return FR_DISK_ERR;\r
- mem_set(tbl, 0, SS(fs)); /* Following FAT entries are filled by zero */\r
- for (n = 1; n < n_fat; n++) {\r
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)\r
- return FR_DISK_ERR;\r
- }\r
- }\r
-\r
- /* Initialize Root directory */\r
- m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);\r
- do {\r
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)\r
- return FR_DISK_ERR;\r
- } while (--m);\r
-\r
- /* Create FSInfo record if needed */\r
- if (fmt == FS_FAT32) {\r
- ST_WORD(tbl+BS_55AA, 0xAA55);\r
- ST_DWORD(tbl+FSI_LeadSig, 0x41615252);\r
- ST_DWORD(tbl+FSI_StrucSig, 0x61417272);\r
- ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);\r
- ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);\r
- disk_write(drv, tbl, b_part+1, 1);\r
- disk_write(drv, tbl, b_part+7, 1);\r
- }\r
-\r
- return (disk_ioctl(drv, CTRL_SYNC, (void*)NULL) == RES_OK) ? FR_OK : FR_DISK_ERR;\r
-}\r
-\r
-#endif /* _USE_MKFS && !_FS_READONLY */\r
-\r
-\r
-\r
-\r
-#if _USE_STRFUNC\r
-/*-----------------------------------------------------------------------*/\r
-/* Get a string from the file */\r
-/*-----------------------------------------------------------------------*/\r
-char* f_gets (\r
- char* buff, /* Pointer to the string buffer to read */\r
- int len, /* Size of string buffer */\r
- FIL* fil /* Pointer to the file object */\r
-)\r
-{\r
- int i = 0;\r
- char *p = buff;\r
- UINT rc;\r
-\r
-\r
- while (i < len - 1) { /* Read bytes until buffer gets filled */\r
- f_read(fil, p, 1, &rc);\r
- if (rc != 1) break; /* Break when no data to read */\r
-#if _USE_STRFUNC >= 2\r
- if (*p == '\r') continue; /* Strip '\r' */\r
-#endif\r
- i++;\r
- if (*p++ == '\n') break; /* Break when reached end of line */\r
- }\r
- *p = 0;\r
- return i ? buff : NULL; /* When no data read (eof or error), return with error. */\r
-}\r
-\r
-\r
-\r
-#if !_FS_READONLY\r
-#include <stdarg.h>\r
-/*-----------------------------------------------------------------------*/\r
-/* Put a character to the file */\r
-/*-----------------------------------------------------------------------*/\r
-int f_putc (\r
- int chr, /* A character to be output */\r
- FIL* fil /* Ponter to the file object */\r
-)\r
-{\r
- UINT bw;\r
- char c;\r
-\r
-\r
-#if _USE_STRFUNC >= 2\r
- if (chr == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */\r
-#endif\r
- if (!fil) { /* Special value may be used to switch the destination to any other device */\r
- /* put_console(chr); */\r
- return chr;\r
- }\r
- c = (char)chr;\r
- f_write(fil, &c, 1, &bw); /* Write a byte to the file */\r
- return bw ? chr : EOF; /* Return the result */\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Put a string to the file */\r
-/*-----------------------------------------------------------------------*/\r
-int f_puts (\r
- const char* str, /* Pointer to the string to be output */\r
- FIL* fil /* Pointer to the file object */\r
-)\r
-{\r
- int n;\r
-\r
-\r
- for (n = 0; *str; str++, n++) {\r
- if (f_putc(*str, fil) == EOF) return EOF;\r
- }\r
- return n;\r
-}\r
-\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Put a formatted string to the file */\r
-/*-----------------------------------------------------------------------*/\r
-int f_printf (\r
- FIL* fil, /* Pointer to the file object */\r
- const char* str, /* Pointer to the format string */\r
- ... /* Optional arguments... */\r
-)\r
-{\r
- va_list arp;\r
- UCHAR c, f, r;\r
- ULONG val;\r
- char s[16];\r
- int i, w, res, cc;\r
-\r
-\r
- va_start(arp, str);\r
-\r
- for (cc = res = 0; cc != EOF; res += cc) {\r
- c = *str++;\r
- if (c == 0) break; /* End of string */\r
- if (c != '%') { /* Non escape cahracter */\r
- cc = f_putc(c, fil);\r
- if (cc != EOF) cc = 1;\r
- continue;\r
- }\r
- w = f = 0;\r
- c = *str++;\r
- if (c == '0') { /* Flag: '0' padding */\r
- f = 1; c = *str++;\r
- }\r
- while (c >= '0' && c <= '9') { /* Precision */\r
- w = w * 10 + (c - '0');\r
- c = *str++;\r
- }\r
- if (c == 'l') { /* Prefix: Size is long int */\r
- f |= 2; c = *str++;\r
- }\r
- if (c == 's') { /* Type is string */\r
- cc = f_puts(va_arg(arp, char*), fil);\r
- continue;\r
- }\r
- if (c == 'c') { /* Type is character */\r
- cc = f_putc(va_arg(arp, int), fil);\r
- if (cc != EOF) cc = 1;\r
- continue;\r
- }\r
- r = 0;\r
- if (c == 'd') r = 10; /* Type is signed decimal */\r
- if (c == 'u') r = 10; /* Type is unsigned decimal */\r
- if (c == 'X') r = 16; /* Type is unsigned hexdecimal */\r
- if (r == 0) break; /* Unknown type */\r
- if (f & 2) { /* Get the value */\r
- val = (ULONG)va_arg(arp, long);\r
- } else {\r
- val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);\r
- }\r
- /* Put numeral string */\r
- if (c == 'd') {\r
- if (val & 0x80000000) {\r
- val = 0 - val;\r
- f |= 4;\r
- }\r
- }\r
- i = sizeof(s) - 1; s[i] = 0;\r
- do {\r
- c = (UCHAR)(val % r + '0');\r
- if (c > '9') c += 7;\r
- s[--i] = c;\r
- val /= r;\r
- } while (i && val);\r
- if (i && (f & 4)) s[--i] = '-';\r
- w = sizeof(s) - 1 - w;\r
- while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';\r
- cc = f_puts(&s[i], fil);\r
- }\r
-\r
- va_end(arp);\r
- return (cc == EOF) ? cc : res;\r
-}\r
-\r
-#endif /* !_FS_READONLY */\r
-#endif /* _USE_STRFUNC */\r
+/*----------------------------------------------------------------------------/
+/ FatFs - FAT file system module R0.08b (C)ChaN, 2011
+/-----------------------------------------------------------------------------/
+/ FatFs module is a generic FAT file system module for small embedded systems.
+/ This is a free software that opened for education, research and commercial
+/ developments under license policy of following terms.
+/
+/ Copyright (C) 2011, ChaN, all right reserved.
+/
+/ * The FatFs module is a free software and there is NO WARRANTY.
+/ * No restriction on use. You can use, modify and redistribute it for
+/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
+/ * Redistributions of source code must retain the above copyright notice.
+/
+/-----------------------------------------------------------------------------/
+/ Feb 26,'06 R0.00 Prototype.
+/
+/ Apr 29,'06 R0.01 First stable version.
+/
+/ Jun 01,'06 R0.02 Added FAT12 support.
+/ Removed unbuffered mode.
+/ Fixed a problem on small (<32M) partition.
+/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
+/
+/ Sep 22,'06 R0.03 Added f_rename().
+/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
+/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
+/ Fixed f_mkdir() creates incorrect directory on FAT32.
+/
+/ Feb 04,'07 R0.04 Supported multiple drive system.
+/ Changed some interfaces for multiple drive system.
+/ Changed f_mountdrv() to f_mount().
+/ Added f_mkfs().
+/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
+/ Added a capability of extending file size to f_lseek().
+/ Added minimization level 3.
+/ Fixed an endian sensitive code in f_mkfs().
+/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
+/ Added FSInfo support.
+/ Fixed DBCS name can result FR_INVALID_NAME.
+/ Fixed short seek (<= csize) collapses the file object.
+/
+/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
+/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
+/ Fixed f_mkdir() on FAT32 creates incorrect directory.
+/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
+/ Fixed off by one error at FAT sub-type determination.
+/ Fixed btr in f_read() can be mistruncated.
+/ Fixed cached sector is not flushed when create and close without write.
+/
+/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
+/ Improved performance of f_lseek() on moving to the same or following cluster.
+/
+/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a configuration option. (_FS_TINY)
+/ Added long file name feature.
+/ Added multiple code page feature.
+/ Added re-entrancy for multitask operation.
+/ Added auto cluster size selection to f_mkfs().
+/ Added rewind option to f_readdir().
+/ Changed result code of critical errors.
+/ Renamed string functions to avoid name collision.
+/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
+/ Added multiple sector size feature.
+/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
+/ Fixed wrong cache control in f_lseek().
+/ Added relative path feature.
+/ Added f_chdir() and f_chdrive().
+/ Added proper case conversion to extended char.
+/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
+/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
+/ Fixed name matching error on the 13 char boundary.
+/ Added a configuration option, _LFN_UNICODE.
+/ Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
+/
+/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN = 3)
+/ Added file lock feature. (_FS_SHARE)
+/ Added fast seek feature. (_USE_FASTSEEK)
+/ Changed some types on the API, XCHAR->TCHAR.
+/ Changed fname member in the FILINFO structure on Unicode cfg.
+/ String functions support UTF-8 encoding files on Unicode cfg.
+/ Aug 16,'10 R0.08a Added f_getcwd(). (_FS_RPATH = 2)
+/ Added sector erase feature. (_USE_ERASE)
+/ Moved file lock semaphore table from fs object to the bss.
+/ Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
+/ Fixed f_mkfs() creates wrong FAT32 volume.
+/ Jan 15,'11 R0.08b Fast seek feature is also applied to f_read() and f_write().
+/ f_lseek() reports required table size on creating CLMP.
+/ Extended format syntax of f_printf function.
+/ Ignores duplicated directory separators in given path names.
+/---------------------------------------------------------------------------*/
+
+#include "ff.h" /* FatFs configurations and declarations */
+#include "diskio.h" /* Declarations of low level disk I/O functions */
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Definitions
+
+---------------------------------------------------------------------------*/
+
+#if _FATFS != 8237
+#error Wrong include file (ff.h).
+#endif
+
+
+/* Definitions on sector size */
+#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
+#error Wrong sector size.
+#endif
+#if _MAX_SS != 512
+#define SS(fs) ((fs)->ssize) /* Multiple sector size */
+#else
+#define SS(fs) 512U /* Fixed sector size */
+#endif
+
+
+/* Reentrancy related */
+#if _FS_REENTRANT
+#if _USE_LFN == 1
+#error Static LFN work area must not be used in re-entrant configuration.
+#endif
+#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
+#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
+#else
+#define ENTER_FF(fs)
+#define LEAVE_FF(fs, res) return res
+#endif
+
+#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
+
+
+/* File shareing feature */
+#if _FS_SHARE
+#if _FS_READONLY
+#error _FS_SHARE must be 0 on read-only cfg.
+#endif
+typedef struct {
+ FATFS *fs; /* File ID 1, volume (NULL:blank entry) */
+ DWORD clu; /* File ID 2, directory */
+ WORD idx; /* File ID 3, directory index */
+ WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:write mode */
+} FILESEM;
+#endif
+
+
+/* Misc definitions */
+#define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO))
+#define ST_CLUST(dir,cl) {ST_WORD(dir+DIR_FstClusLO, cl); ST_WORD(dir+DIR_FstClusHI, (DWORD)cl>>16);}
+
+
+/* DBCS code ranges and SBCS extend char conversion table */
+
+#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
+#define _DF1S 0x81 /* DBC 1st byte range 1 start */
+#define _DF1E 0x9F /* DBC 1st byte range 1 end */
+#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
+#define _DF2E 0xFC /* DBC 1st byte range 2 end */
+#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
+#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
+#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
+#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
+
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0x80
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 949 /* Korean */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x41
+#define _DS1E 0x5A
+#define _DS2S 0x61
+#define _DS2E 0x7A
+#define _DS3S 0x81
+#define _DS3E 0xFE
+
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0xA1
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 437 /* U.S. (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 720 /* Arabic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 737 /* Greek (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
+ 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 775 /* Baltic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
+ 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
+ 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 857 /* Turkish (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 866 /* Russian (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
+
+#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1253 /* Greek (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
+ 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
+
+#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
+
+#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
+#if _USE_LFN
+#error Cannot use LFN feature without valid code page.
+#endif
+#define _DF1S 0
+
+#else
+#error Unknown code page
+
+#endif
+
+
+/* Character code support macros */
+#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
+#define IsLower(c) (((c)>='a')&&((c)<='z'))
+#define IsDigit(c) (((c)>='0')&&((c)<='9'))
+
+#if _DF1S /* Code page is DBCS */
+
+#ifdef _DF2S /* Two 1st byte areas */
+#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
+#else /* One 1st byte area */
+#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
+#endif
+
+#ifdef _DS3S /* Three 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
+#else /* Two 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
+#endif
+
+#else /* Code page is SBCS */
+
+#define IsDBCS1(c) 0
+#define IsDBCS2(c) 0
+
+#endif /* _DF1S */
+
+
+/* Name status flags */
+#define NS 11 /* Index of name status byte in fn[] */
+#define NS_LOSS 0x01 /* Out of 8.3 format */
+#define NS_LFN 0x02 /* Force to create LFN entry */
+#define NS_LAST 0x04 /* Last segment */
+#define NS_BODY 0x08 /* Lower case flag (body) */
+#define NS_EXT 0x10 /* Lower case flag (ext) */
+#define NS_DOT 0x20 /* Dot entry */
+
+
+/* FAT sub-type boundaries */
+/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
+#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
+#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
+
+
+/* FatFs refers the members in the FAT structures as byte array instead of
+/ structure member because the structure is not binary compatible between
+/ different platforms */
+
+#define BS_jmpBoot 0 /* Jump instruction (3) */
+#define BS_OEMName 3 /* OEM name (8) */
+#define BPB_BytsPerSec 11 /* Sector size [byte] (2) */
+#define BPB_SecPerClus 13 /* Cluster size [sector] (1) */
+#define BPB_RsvdSecCnt 14 /* Size of reserved area [sector] (2) */
+#define BPB_NumFATs 16 /* Number of FAT copies (1) */
+#define BPB_RootEntCnt 17 /* Number of root dir entries for FAT12/16 (2) */
+#define BPB_TotSec16 19 /* Volume size [sector] (2) */
+#define BPB_Media 21 /* Media descriptor (1) */
+#define BPB_FATSz16 22 /* FAT size [sector] (2) */
+#define BPB_SecPerTrk 24 /* Track size [sector] (2) */
+#define BPB_NumHeads 26 /* Number of heads (2) */
+#define BPB_HiddSec 28 /* Number of special hidden sectors (4) */
+#define BPB_TotSec32 32 /* Volume size [sector] (4) */
+#define BS_DrvNum 36 /* Physical drive number (2) */
+#define BS_BootSig 38 /* Extended boot signature (1) */
+#define BS_VolID 39 /* Volume serial number (4) */
+#define BS_VolLab 43 /* Volume label (8) */
+#define BS_FilSysType 54 /* File system type (1) */
+#define BPB_FATSz32 36 /* FAT size [sector] (4) */
+#define BPB_ExtFlags 40 /* Extended flags (2) */
+#define BPB_FSVer 42 /* File system version (2) */
+#define BPB_RootClus 44 /* Root dir first cluster (4) */
+#define BPB_FSInfo 48 /* Offset of FSInfo sector (2) */
+#define BPB_BkBootSec 50 /* Offset of backup boot sectot (2) */
+#define BS_DrvNum32 64 /* Physical drive number (2) */
+#define BS_BootSig32 66 /* Extended boot signature (1) */
+#define BS_VolID32 67 /* Volume serial number (4) */
+#define BS_VolLab32 71 /* Volume label (8) */
+#define BS_FilSysType32 82 /* File system type (1) */
+#define FSI_LeadSig 0 /* FSI: Leading signature (4) */
+#define FSI_StrucSig 484 /* FSI: Structure signature (4) */
+#define FSI_Free_Count 488 /* FSI: Number of free clusters (4) */
+#define FSI_Nxt_Free 492 /* FSI: Last allocated cluster (4) */
+#define MBR_Table 446 /* MBR: Partition table offset (2) */
+#define SZ_PTE 16 /* MBR: Size of a partition table entry */
+#define BS_55AA 510 /* Boot sector signature (2) */
+
+#define DIR_Name 0 /* Short file name (11) */
+#define DIR_Attr 11 /* Attribute (1) */
+#define DIR_NTres 12 /* NT flag (1) */
+#define DIR_CrtTime 14 /* Created time (2) */
+#define DIR_CrtDate 16 /* Created date (2) */
+#define DIR_FstClusHI 20 /* Higher 16-bit of first cluster (2) */
+#define DIR_WrtTime 22 /* Modified time (2) */
+#define DIR_WrtDate 24 /* Modified date (2) */
+#define DIR_FstClusLO 26 /* Lower 16-bit of first cluster (2) */
+#define DIR_FileSize 28 /* File size (4) */
+#define LDIR_Ord 0 /* LFN entry order and LLE flag (1) */
+#define LDIR_Attr 11 /* LFN attribute (1) */
+#define LDIR_Type 12 /* LFN type (1) */
+#define LDIR_Chksum 13 /* Sum of corresponding SFN entry */
+#define LDIR_FstClusLO 26 /* Filled by zero (0) */
+#define SZ_DIR 32 /* Size of a directory entry */
+#define LLE 0x40 /* Last long entry flag in LDIR_Ord */
+#define DDE 0xE5 /* Deleted directory enrty mark in DIR_Name[0] */
+#define NDDE 0x05 /* Replacement of a character collides with DDE */
+
+
+/*------------------------------------------------------------*/
+/* Work area */
+
+#if _VOLUMES
+static
+FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical drives) */
+#else
+#error Number of drives must not be 0.
+#endif
+
+static
+WORD Fsid; /* File system mount ID */
+
+#if _FS_RPATH
+static
+BYTE CurrVol; /* Current drive */
+#endif
+
+#if _FS_SHARE
+static
+FILESEM Files[_FS_SHARE]; /* File lock semaphores */
+#endif
+
+#if _USE_LFN == 0 /* No LFN */
+#define DEF_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) (dobj).fn = sfn
+#define FREE_BUF()
+
+#elif _USE_LFN == 1 /* LFN with static LFN working buffer */
+static WCHAR LfnBuf[_MAX_LFN+1];
+#define DEF_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
+#define FREE_BUF()
+
+#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN+1]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
+#define FREE_BUF()
+
+#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
+#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
+ if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
+ (dobj).lfn = lfn; (dobj).fn = sfn; }
+#define FREE_BUF() ff_memfree(lfn)
+
+#else
+#error Wrong LFN configuration.
+#endif
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Functions
+
+---------------------------------------------------------------------------*/
+
+
+/*-----------------------------------------------------------------------*/
+/* String functions */
+/*-----------------------------------------------------------------------*/
+
+/* Copy memory to memory */
+static
+void mem_cpy (void* dst, const void* src, UINT cnt) {
+ BYTE *d = (BYTE*)dst;
+ const BYTE *s = (const BYTE*)src;
+
+#if _WORD_ACCESS == 1
+ while (cnt >= sizeof(int)) {
+ *(int*)d = *(int*)s;
+ d += sizeof(int); s += sizeof(int);
+ cnt -= sizeof(int);
+ }
+#endif
+ while (cnt--)
+ *d++ = *s++;
+}
+
+/* Fill memory */
+static
+void mem_set (void* dst, int val, UINT cnt) {
+ BYTE *d = (BYTE*)dst;
+
+ while (cnt--)
+ *d++ = (BYTE)val;
+}
+
+/* Compare memory to memory */
+static
+int mem_cmp (const void* dst, const void* src, UINT cnt) {
+ const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
+ int r = 0;
+
+ while (cnt-- && (r = *d++ - *s++) == 0) ;
+ return r;
+}
+
+/* Check if chr is contained in the string */
+static
+int chk_chr (const char* str, int chr) {
+ while (*str && *str != chr) str++;
+ return *str;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Request/Release grant to access the volume */
+/*-----------------------------------------------------------------------*/
+#if _FS_REENTRANT
+
+static
+int lock_fs (
+ FATFS *fs /* File system object */
+)
+{
+ return ff_req_grant(fs->sobj);
+}
+
+
+static
+void unlock_fs (
+ FATFS *fs, /* File system object */
+ FRESULT res /* Result code to be returned */
+)
+{
+ if (res != FR_NOT_ENABLED &&
+ res != FR_INVALID_DRIVE &&
+ res != FR_INVALID_OBJECT &&
+ res != FR_TIMEOUT) {
+ ff_rel_grant(fs->sobj);
+ }
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* File shareing control functions */
+/*-----------------------------------------------------------------------*/
+#if _FS_SHARE
+
+static
+FRESULT chk_lock ( /* Check if the file can be accessed */
+ DIR* dj, /* Directory object pointing the file to be checked */
+ int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
+)
+{
+ UINT i, be;
+
+ /* Search file semaphore table */
+ for (i = be = 0; i < _FS_SHARE; i++) {
+ if (Files[i].fs) { /* Existing entry */
+ if (Files[i].fs == dj->fs && /* Check if the file matched with an open file */
+ Files[i].clu == dj->sclust &&
+ Files[i].idx == dj->index) break;
+ } else { /* Blank entry */
+ be++;
+ }
+ }
+ if (i == _FS_SHARE) /* The file is not opened */
+ return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
+
+ /* The file has been opened. Reject any open against writing file and all write mode open */
+ return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+}
+
+
+static
+int enq_lock ( /* Check if an entry is available for a new file */
+ FATFS* fs /* File system object */
+)
+{
+ UINT i;
+
+ for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ;
+ return (i == _FS_SHARE) ? 0 : 1;
+}
+
+
+static
+UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
+ DIR* dj, /* Directory object pointing the file to register or increment */
+ int acc /* Desired access mode (0:Read, !0:Write) */
+)
+{
+ UINT i;
+
+
+ for (i = 0; i < _FS_SHARE; i++) { /* Find the file */
+ if (Files[i].fs == dj->fs &&
+ Files[i].clu == dj->sclust &&
+ Files[i].idx == dj->index) break;
+ }
+
+ if (i == _FS_SHARE) { /* Not opened. Register it as new. */
+ for (i = 0; i < _FS_SHARE && Files[i].fs; i++) ;
+ if (i == _FS_SHARE) return 0; /* No space to register (int err) */
+ Files[i].fs = dj->fs;
+ Files[i].clu = dj->sclust;
+ Files[i].idx = dj->index;
+ Files[i].ctr = 0;
+ }
+
+ if (acc && 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 file open counter */
+ UINT i /* Semaphore index */
+)
+{
+ WORD n;
+ FRESULT res;
+
+
+ if (--i < _FS_SHARE) {
+ n = Files[i].ctr;
+ if (n == 0x100) n = 0;
+ if (n) n--;
+ Files[i].ctr = n;
+ if (!n) Files[i].fs = 0;
+ res = FR_OK;
+ } else {
+ res = FR_INT_ERR;
+ }
+ return res;
+}
+
+
+static
+void clear_lock ( /* Clear lock entries of the volume */
+ FATFS *fs
+)
+{
+ UINT i;
+
+ for (i = 0; i < _FS_SHARE; i++) {
+ if (Files[i].fs == fs) Files[i].fs = 0;
+ }
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change window offset */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT move_window (
+ FATFS *fs, /* File system object */
+ DWORD sector /* Sector number to make appearance in the fs->win[] */
+) /* Move to zero only writes back dirty window */
+{
+ DWORD wsect;
+
+
+ wsect = fs->winsect;
+ if (wsect != sector) { /* Changed current window */
+#if !_FS_READONLY
+ if (fs->wflag) { /* Write back dirty window if needed */
+ if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
+ return FR_DISK_ERR;
+ fs->wflag = 0;
+ if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
+ BYTE nf;
+ for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
+ wsect += fs->fsize;
+ disk_write(fs->drv, fs->win, wsect, 1);
+ }
+ }
+ }
+#endif
+ if (sector) {
+ if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
+ return FR_DISK_ERR;
+ fs->winsect = sector;
+ }
+ }
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Clean-up cached data */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
+ FATFS *fs /* File system object */
+)
+{
+ FRESULT res;
+
+
+ res = move_window(fs, 0);
+ if (res == FR_OK) {
+ /* Update FSInfo sector if needed */
+ if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
+ fs->winsect = 0;
+ /* Create FSInfo structure */
+ mem_set(fs->win, 0, 512);
+ ST_WORD(fs->win+BS_55AA, 0xAA55);
+ ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
+ ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
+ ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
+ ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
+ /* Write it into the FSInfo sector */
+ disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
+ fs->fsi_flag = 0;
+ }
+ /* Make sure that no pending write process in the physical drive */
+ if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
+ res = FR_DISK_ERR;
+ }
+
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get sector# from cluster# */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to be converted */
+)
+{
+ clst -= 2;
+ if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
+ return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Read value of a FAT entry */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to get the link information */
+)
+{
+ UINT wc, bc;
+ BYTE *p;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
+ return 1;
+
+ switch (fs->fs_type) {
+ case FS_FAT12 :
+ bc = (UINT)clst; bc += bc / 2;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
+ wc = fs->win[bc % SS(fs)]; bc++;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
+ wc |= fs->win[bc % SS(fs)] << 8;
+ return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
+
+ case FS_FAT16 :
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ return LD_WORD(p);
+
+ case FS_FAT32 :
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ return LD_DWORD(p) & 0x0FFFFFFF;
+ }
+
+ return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Change value of a FAT entry */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+
+FRESULT put_fat (
+ FATFS *fs, /* File system object */
+ DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
+ DWORD val /* New value to mark the cluster */
+)
+{
+ UINT bc;
+ BYTE *p;
+ FRESULT res;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
+ res = FR_INT_ERR;
+
+ } else {
+ switch (fs->fs_type) {
+ case FS_FAT12 :
+ bc = clst; bc += bc / 2;
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+ if (res != FR_OK) break;
+ p = &fs->win[bc % SS(fs)];
+ *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
+ bc++;
+ fs->wflag = 1;
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+ if (res != FR_OK) break;
+ p = &fs->win[bc % SS(fs)];
+ *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
+ break;
+
+ case FS_FAT16 :
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
+ if (res != FR_OK) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ ST_WORD(p, (WORD)val);
+ break;
+
+ case FS_FAT32 :
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
+ if (res != FR_OK) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ val |= LD_DWORD(p) & 0xF0000000;
+ ST_DWORD(p, val);
+ break;
+
+ default :
+ res = FR_INT_ERR;
+ }
+ fs->wflag = 1;
+ }
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Remove a cluster chain */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT remove_chain (
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to remove a chain from */
+)
+{
+ FRESULT res;
+ DWORD nxt;
+#if _USE_ERASE
+ DWORD scl = clst, ecl = clst, resion[2];
+#endif
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
+ res = FR_INT_ERR;
+
+ } else {
+ res = FR_OK;
+ while (clst < fs->n_fatent) { /* Not a last link? */
+ nxt = get_fat(fs, clst); /* Get cluster status */
+ if (nxt == 0) break; /* Empty cluster? */
+ if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
+ if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
+ res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
+ if (res != FR_OK) break;
+ if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
+ fs->free_clust++;
+ fs->fsi_flag = 1;
+ }
+#if _USE_ERASE
+ if (ecl + 1 == nxt) { /* Next cluster is contiguous */
+ ecl = nxt;
+ } else { /* End of contiguous clusters */
+ resion[0] = clust2sect(fs, scl); /* Start sector */
+ resion[1] = clust2sect(fs, ecl) + fs->csize - 1; /* End sector */
+ disk_ioctl(fs->drv, CTRL_ERASE_SECTOR, resion); /* Erase the block */
+ scl = ecl = nxt;
+ }
+#endif
+ clst = nxt; /* Next cluster */
+ }
+ }
+
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Stretch or Create a cluster chain */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
+)
+{
+ DWORD cs, ncl, scl;
+ FRESULT res;
+
+
+ if (clst == 0) { /* Create a new chain */
+ scl = fs->last_clust; /* Get suggested start point */
+ if (!scl || scl >= fs->n_fatent) scl = 1;
+ }
+ else { /* Stretch the current chain */
+ cs = get_fat(fs, clst); /* Check the cluster status */
+ if (cs < 2) return 1; /* It is an invalid cluster */
+ if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
+ scl = clst;
+ }
+
+ ncl = scl; /* Start cluster */
+ for (;;) {
+ ncl++; /* Next cluster */
+ if (ncl >= fs->n_fatent) { /* Wrap around */
+ ncl = 2;
+ if (ncl > scl) return 0; /* No free cluster */
+ }
+ cs = get_fat(fs, ncl); /* Get the cluster status */
+ if (cs == 0) break; /* Found a free cluster */
+ if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
+ return cs;
+ if (ncl == scl) return 0; /* No free cluster */
+ }
+
+ res = put_fat(fs, ncl, 0x0FFFFFFF); /* Mark the new cluster "last link" */
+ if (res == FR_OK && clst != 0) {
+ res = put_fat(fs, clst, ncl); /* Link it to the previous one if needed */
+ }
+ if (res == FR_OK) {
+ fs->last_clust = ncl; /* Update FSINFO */
+ if (fs->free_clust != 0xFFFFFFFF) {
+ fs->free_clust--;
+ fs->fsi_flag = 1;
+ }
+ } else {
+ ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;
+ }
+
+ return ncl; /* Return new cluster number or error code */
+}
+#endif /* !_FS_READONLY */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Convert offset into cluster with link map table */
+/*-----------------------------------------------------------------------*/
+
+#if _USE_FASTSEEK
+static
+DWORD clmt_clust ( /* <2:Error, >=2:Cluster number */
+ FIL* fp, /* Pointer to the file object */
+ DWORD ofs /* File offset to be converted to cluster# */
+)
+{
+ DWORD cl, ncl, *tbl;
+
+
+ tbl = fp->cltbl + 1; /* Top of CLMT */
+ cl = ofs / SS(fp->fs) / fp->fs->csize; /* Cluster order from top of the file */
+ for (;;) {
+ ncl = *tbl++; /* Number of cluters in the fragment */
+ if (!ncl) return 0; /* End of table? (error) */
+ if (cl < ncl) break; /* In this fragment? */
+ cl -= ncl; tbl++; /* Next fragment */
+ }
+ return cl + *tbl; /* Return the cluster number */
+}
+#endif /* _USE_FASTSEEK */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Set directory index */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_sdi (
+ DIR *dj, /* Pointer to directory object */
+ WORD idx /* Directory index number */
+)
+{
+ DWORD clst;
+ WORD ic;
+
+
+ dj->index = idx;
+ clst = dj->sclust;
+ if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */
+ return FR_INT_ERR;
+ if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
+ clst = dj->fs->dirbase;
+
+ if (clst == 0) { /* Static table (root-dir in FAT12/16) */
+ dj->clust = clst;
+ if (idx >= dj->fs->n_rootdir) /* Index is out of range */
+ return FR_INT_ERR;
+ dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
+ }
+ else { /* Dynamic table (sub-dirs or root-dir in FAT32) */
+ ic = SS(dj->fs) / SZ_DIR * dj->fs->csize; /* Entries per cluster */
+ while (idx >= ic) { /* Follow cluster chain */
+ clst = get_fat(dj->fs, clst); /* Get next cluster */
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
+ if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
+ return FR_INT_ERR;
+ idx -= ic;
+ }
+ dj->clust = clst;
+ dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / SZ_DIR); /* Sector# */
+ }
+
+ dj->dir = dj->fs->win + (idx % (SS(dj->fs) / SZ_DIR)) * SZ_DIR; /* Ptr to the entry in the sector */
+
+ return FR_OK; /* Seek succeeded */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Move directory index next */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
+ DIR *dj, /* Pointer to directory object */
+ int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
+)
+{
+ DWORD clst;
+ WORD i;
+
+
+ i = dj->index + 1;
+ if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
+ return FR_NO_FILE;
+
+ if (!(i % (SS(dj->fs) / SZ_DIR))) { /* Sector changed? */
+ dj->sect++; /* Next sector */
+
+ if (dj->clust == 0) { /* Static table */
+ if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
+ return FR_NO_FILE;
+ }
+ else { /* Dynamic table */
+ if (((i / (SS(dj->fs) / SZ_DIR)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
+ clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
+ if (clst <= 1) return FR_INT_ERR;
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+ if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
+#if !_FS_READONLY
+ BYTE c;
+ if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
+ clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
+ if (clst == 0) return FR_DENIED; /* No free cluster */
+ if (clst == 1) return FR_INT_ERR;
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+ /* Clean-up stretched table */
+ if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
+ mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
+ dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
+ for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
+ dj->fs->wflag = 1;
+ if (move_window(dj->fs, 0)) return FR_DISK_ERR;
+ dj->fs->winsect++;
+ }
+ dj->fs->winsect -= c; /* Rewind window address */
+#else
+ return FR_NO_FILE; /* Report EOT */
+#endif
+ }
+ dj->clust = clst; /* Initialize data for new cluster */
+ dj->sect = clust2sect(dj->fs, clst);
+ }
+ }
+ }
+
+ dj->index = i;
+ dj->dir = dj->fs->win + (i % (SS(dj->fs) / SZ_DIR)) * SZ_DIR;
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
+
+
+static
+int cmp_lfn ( /* 1:Matched, 0:Not matched */
+ WCHAR *lfnbuf, /* Pointer to the LFN to be compared */
+ BYTE *dir /* Pointer to the directory entry containing a part of LFN */
+)
+{
+ UINT i, s;
+ WCHAR wc, uc;
+
+
+ i = ((dir[LDIR_Ord] & ~LLE) - 1) * 13; /* Get offset in the LFN buffer */
+ s = 0; wc = 1;
+ do {
+ uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ if (wc) { /* Last char has not been processed */
+ wc = ff_wtoupper(uc); /* Convert it to upper case */
+ if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
+ return 0; /* Not matched */
+ } else {
+ if (uc != 0xFFFF) return 0; /* Check filler */
+ }
+ } while (++s < 13); /* Repeat until all chars in the entry are checked */
+
+ if ((dir[LDIR_Ord] & LLE) && wc && lfnbuf[i]) /* Last segment matched but different length */
+ return 0;
+
+ return 1; /* The part of LFN matched */
+}
+
+
+
+static
+int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
+ WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
+ BYTE *dir /* Pointer to the directory entry */
+)
+{
+ UINT i, s;
+ WCHAR wc, uc;
+
+
+ i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
+
+ s = 0; wc = 1;
+ do {
+ uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ if (wc) { /* Last char has not been processed */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i++] = wc = uc; /* Store it */
+ } else {
+ if (uc != 0xFFFF) return 0; /* Check filler */
+ }
+ } while (++s < 13); /* Read all character in the entry */
+
+ if (dir[LDIR_Ord] & LLE) { /* Put terminator if it is the last LFN part */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i] = 0;
+ }
+
+ return 1;
+}
+
+
+#if !_FS_READONLY
+static
+void fit_lfn (
+ const WCHAR *lfnbuf, /* Pointer to the LFN buffer */
+ BYTE *dir, /* Pointer to the directory entry */
+ BYTE ord, /* LFN order (1-20) */
+ BYTE sum /* SFN sum */
+)
+{
+ UINT i, s;
+ WCHAR wc;
+
+
+ dir[LDIR_Chksum] = sum; /* Set check sum */
+ dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
+ dir[LDIR_Type] = 0;
+ ST_WORD(dir+LDIR_FstClusLO, 0);
+
+ i = (ord - 1) * 13; /* Get offset in the LFN buffer */
+ s = wc = 0;
+ do {
+ if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
+ ST_WORD(dir+LfnOfs[s], wc); /* Put it */
+ if (!wc) wc = 0xFFFF; /* Padding chars following last char */
+ } while (++s < 13);
+ if (wc == 0xFFFF || !lfnbuf[i]) ord |= LLE; /* Bottom LFN part is the start of LFN sequence */
+ dir[LDIR_Ord] = ord; /* Set the LFN order */
+}
+
+#endif
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create numbered name */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+void gen_numname (
+ BYTE *dst, /* Pointer to generated SFN */
+ const BYTE *src, /* Pointer to source SFN to be modified */
+ const WCHAR *lfn, /* Pointer to LFN */
+ WORD seq /* Sequence number */
+)
+{
+ BYTE ns[8], c;
+ UINT i, j;
+
+
+ mem_cpy(dst, src, 11);
+
+ if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
+ do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn);
+ }
+
+ /* itoa (hexdecimal) */
+ i = 7;
+ do {
+ c = (seq % 16) + '0';
+ if (c > '9') c += 7;
+ ns[i--] = c;
+ seq /= 16;
+ } while (seq);
+ ns[i] = '~';
+
+ /* Append the number */
+ for (j = 0; j < i && dst[j] != ' '; j++) {
+ if (IsDBCS1(dst[j])) {
+ if (j == i - 1) break;
+ j++;
+ }
+ }
+ do {
+ dst[j++] = (i < 8) ? ns[i++] : ' ';
+ } while (j < 8);
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Calculate sum of an SFN */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+BYTE sum_sfn (
+ const BYTE *dir /* Ptr to directory entry */
+)
+{
+ BYTE sum = 0;
+ UINT n = 11;
+
+ do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
+ return sum;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Find an object in the directory */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_find (
+ DIR *dj /* Pointer to the directory object linked to the file name */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN
+ BYTE a, ord, sum;
+#endif
+
+ res = dir_sdi(dj, 0); /* Rewind directory object */
+ if (res != FR_OK) return res;
+
+#if _USE_LFN
+ ord = sum = 0xFF;
+#endif
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ dir = dj->dir; /* Ptr to the directory entry of current index */
+ c = dir[DIR_Name];
+ if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
+#if _USE_LFN /* LFN configuration */
+ a = dir[DIR_Attr] & AM_MASK;
+ if (c == DDE || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ ord = 0xFF;
+ } else {
+ if (a == AM_LFN) { /* An LFN entry is found */
+ if (dj->lfn) {
+ if (c & LLE) { /* Is it start of LFN sequence? */
+ sum = dir[LDIR_Chksum];
+ c &= ~LLE; ord = c; /* LFN start order */
+ dj->lfn_idx = dj->index;
+ }
+ /* Check validity of the LFN entry and compare it with given name */
+ ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
+ }
+ } else { /* An SFN entry is found */
+ if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
+ ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
+ if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
+ }
+ }
+#else /* Non LFN configuration */
+ if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
+ break;
+#endif
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK);
+
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read an object from the directory */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+FRESULT dir_read (
+ DIR *dj /* Pointer to the directory object that pointing the entry to be read */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN
+ BYTE a, ord = 0xFF, sum = 0xFF;
+#endif
+
+ res = FR_NO_FILE;
+ while (dj->sect) {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ dir = dj->dir; /* Ptr to the directory entry of current index */
+ c = dir[DIR_Name];
+ if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
+#if _USE_LFN /* LFN configuration */
+ a = dir[DIR_Attr] & AM_MASK;
+ if (c == DDE || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ ord = 0xFF;
+ } else {
+ if (a == AM_LFN) { /* An LFN entry is found */
+ if (c & LLE) { /* Is it start of LFN sequence? */
+ sum = dir[LDIR_Chksum];
+ c &= ~LLE; ord = c;
+ dj->lfn_idx = dj->index;
+ }
+ /* Check LFN validity and capture it */
+ ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
+ } else { /* An SFN entry is found */
+ if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
+ dj->lfn_idx = 0xFFFF; /* It has no LFN. */
+ break;
+ }
+ }
+#else /* Non LFN configuration */
+ if (c != DDE && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
+ break;
+#endif
+ res = dir_next(dj, 0); /* Next entry */
+ if (res != FR_OK) break;
+ }
+
+ if (res != FR_OK) dj->sect = 0;
+
+ return res;
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Register an object to the directory */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
+ DIR *dj /* Target directory with object name to be created */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN /* LFN configuration */
+ WORD n, ne, is;
+ BYTE sn[12], *fn, sum;
+ WCHAR *lfn;
+
+
+ fn = dj->fn; lfn = dj->lfn;
+ mem_cpy(sn, fn, 12);
+
+ if (_FS_RPATH && (sn[NS] & NS_DOT)) /* Cannot create dot entry */
+ return FR_INVALID_NAME;
+
+ if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
+ fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
+ for (n = 1; n < 100; n++) {
+ gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
+ res = dir_find(dj); /* Check if the name collides with existing SFN */
+ if (res != FR_OK) break;
+ }
+ if (n == 100) return FR_DENIED; /* Abort if too many collisions */
+ if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
+ fn[NS] = sn[NS]; dj->lfn = lfn;
+ }
+
+ if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
+ for (ne = 0; lfn[ne]; ne++) ;
+ ne = (ne + 25) / 13;
+ } else { /* Otherwise reserve only an SFN entry. */
+ ne = 1;
+ }
+
+ /* Reserve contiguous entries */
+ res = dir_sdi(dj, 0);
+ if (res != FR_OK) return res;
+ n = is = 0;
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ c = *dj->dir; /* Check the entry status */
+ if (c == DDE || c == 0) { /* Is it a blank entry? */
+ if (n == 0) is = dj->index; /* First index of the contiguous entry */
+ if (++n == ne) break; /* A contiguous entry that required count is found */
+ } else {
+ n = 0; /* Not a blank entry. Restart to search */
+ }
+ res = dir_next(dj, 1); /* Next entry with table stretch */
+ } while (res == FR_OK);
+
+ if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
+ res = dir_sdi(dj, is);
+ if (res == FR_OK) {
+ sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
+ ne--;
+ do { /* Store LFN entries in bottom first */
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
+ dj->fs->wflag = 1;
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK && --ne);
+ }
+ }
+
+#else /* Non LFN configuration */
+ res = dir_sdi(dj, 0);
+ if (res == FR_OK) {
+ do { /* Find a blank entry for the SFN */
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ c = *dj->dir;
+ if (c == DDE || c == 0) break; /* Is it a blank entry? */
+ res = dir_next(dj, 1); /* Next entry with table stretch */
+ } while (res == FR_OK);
+ }
+#endif
+
+ if (res == FR_OK) { /* Initialize the SFN entry */
+ res = move_window(dj->fs, dj->sect);
+ if (res == FR_OK) {
+ dir = dj->dir;
+ mem_set(dir, 0, SZ_DIR); /* Clean the entry */
+ mem_cpy(dir, dj->fn, 11); /* Put SFN */
+#if _USE_LFN
+ dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
+#endif
+ dj->fs->wflag = 1;
+ }
+ }
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Remove an object from the directory */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY && !_FS_MINIMIZE
+static
+FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
+ DIR *dj /* Directory object pointing the entry to be removed */
+)
+{
+ FRESULT res;
+#if _USE_LFN /* LFN configuration */
+ WORD i;
+
+ i = dj->index; /* SFN index */
+ res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
+ if (res == FR_OK) {
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ *dj->dir = DDE; /* Mark the entry "deleted" */
+ dj->fs->wflag = 1;
+ if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK);
+ if (res == FR_NO_FILE) res = FR_INT_ERR;
+ }
+
+#else /* Non LFN configuration */
+ res = dir_sdi(dj, dj->index);
+ if (res == FR_OK) {
+ res = move_window(dj->fs, dj->sect);
+ if (res == FR_OK) {
+ *dj->dir = DDE; /* Mark the entry "deleted" */
+ dj->fs->wflag = 1;
+ }
+ }
+#endif
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Pick a segment and create the object name in directory form */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT create_name (
+ DIR *dj, /* Pointer to the directory object */
+ const TCHAR **path /* Pointer to pointer to the segment in the path string */
+)
+{
+#ifdef _EXCVT
+ static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
+#endif
+
+#if _USE_LFN /* LFN configuration */
+ BYTE b, cf;
+ WCHAR w, *lfn;
+ UINT i, ni, si, di;
+ const TCHAR *p;
+
+ /* Create LFN in Unicode */
+ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
+ lfn = dj->lfn;
+ si = di = 0;
+ for (;;) {
+ w = p[si++]; /* Get a character */
+ if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
+ if (di >= _MAX_LFN) /* Reject too long name */
+ return FR_INVALID_NAME;
+#if !_LFN_UNICODE
+ w &= 0xFF;
+ if (IsDBCS1(w)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
+ b = (BYTE)p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(b))
+ return FR_INVALID_NAME; /* Reject invalid sequence */
+ w = (w << 8) + b; /* Create a DBC */
+ }
+ w = ff_convert(w, 1); /* Convert ANSI/OEM to Unicode */
+ if (!w) return FR_INVALID_NAME; /* Reject invalid code */
+#endif
+ if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
+ return FR_INVALID_NAME;
+ lfn[di++] = w; /* Store the Unicode char */
+ }
+ *path = &p[si]; /* Return pointer to the next segment */
+ cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
+#if _FS_RPATH
+ if ((di == 1 && lfn[di-1] == '.') || /* Is this a dot entry? */
+ (di == 2 && lfn[di-1] == '.' && lfn[di-2] == '.')) {
+ lfn[di] = 0;
+ for (i = 0; i < 11; i++)
+ dj->fn[i] = (i < di) ? '.' : ' ';
+ dj->fn[i] = cf | NS_DOT; /* This is a dot entry */
+ return FR_OK;
+ }
+#endif
+ while (di) { /* Strip trailing spaces and dots */
+ w = lfn[di-1];
+ if (w != ' ' && w != '.') break;
+ di--;
+ }
+ if (!di) return FR_INVALID_NAME; /* Reject nul string */
+
+ lfn[di] = 0; /* LFN is created */
+
+ /* Create SFN in directory form */
+ mem_set(dj->fn, ' ', 11);
+ for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
+ if (si) cf |= NS_LOSS | NS_LFN;
+ while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
+
+ b = i = 0; ni = 8;
+ for (;;) {
+ w = lfn[si++]; /* Get an LFN char */
+ 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 char */
+#ifdef _EXCVT
+ w = ff_convert(w, 0); /* Unicode -> OEM code */
+ if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
+#else
+ w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
+#endif
+ cf |= NS_LFN; /* Force create LFN entry */
+ }
+
+ if (_DF1S && w >= 0x100) { /* Double byte char (always false on SBCS cfg) */
+ if (i >= ni - 1) {
+ cf |= NS_LOSS | NS_LFN; i = ni; continue;
+ }
+ dj->fn[i++] = (BYTE)(w >> 8);
+ } else { /* Single byte char */
+ if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
+ w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
+ } else {
+ if (IsUpper(w)) { /* ASCII large capital */
+ b |= 2;
+ } else {
+ if (IsLower(w)) { /* ASCII small capital */
+ b |= 1; w -= 0x20;
+ }
+ }
+ }
+ }
+ dj->fn[i++] = (BYTE)w;
+ }
+
+ if (dj->fn[0] == DDE) dj->fn[0] = NDDE; /* If the first char collides with deleted mark, replace it with 0x05 */
+
+ if (ni == 8) b <<= 2;
+ if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
+ cf |= NS_LFN;
+ if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, 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) */
+ }
+
+ dj->fn[NS] = cf; /* SFN is created */
+
+ return FR_OK;
+
+
+#else /* Non-LFN configuration */
+ BYTE b, c, d, *sfn;
+ UINT ni, si, i;
+ const char *p;
+
+ /* Create file name in directory form */
+ for (p = *path; *p == '/' || *p == '\\'; p++) ; /* Strip duplicated separator */
+ sfn = dj->fn;
+ mem_set(sfn, ' ', 11);
+ si = i = b = 0; ni = 8;
+#if _FS_RPATH
+ if (p[si] == '.') { /* Is this a dot entry? */
+ for (;;) {
+ c = (BYTE)p[si++];
+ if (c != '.' || si >= 3) break;
+ sfn[i++] = c;
+ }
+ if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
+ *path = &p[si]; /* Return pointer to the next segment */
+ sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
+ return FR_OK;
+ }
+#endif
+ for (;;) {
+ c = (BYTE)p[si++];
+ if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
+ if (c == '.' || i >= ni) {
+ if (ni != 8 || c != '.') return FR_INVALID_NAME;
+ i = 8; ni = 11;
+ b <<= 2; continue;
+ }
+ if (c >= 0x80) { /* Extended char? */
+ b |= 3; /* Eliminate NT flag */
+#ifdef _EXCVT
+ c = excvt[c-0x80]; /* Upper conversion (SBCS) */
+#else
+#if !_DF1S /* ASCII only cfg */
+ return FR_INVALID_NAME;
+#endif
+#endif
+ }
+ if (IsDBCS1(c)) { /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
+ d = (BYTE)p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
+ return FR_INVALID_NAME;
+ sfn[i++] = c;
+ sfn[i++] = d;
+ } else { /* Single byte code */
+ if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
+ return FR_INVALID_NAME;
+ if (IsUpper(c)) { /* ASCII large capital? */
+ b |= 2;
+ } else {
+ if (IsLower(c)) { /* ASCII small capital? */
+ b |= 1; c -= 0x20;
+ }
+ }
+ sfn[i++] = c;
+ }
+ }
+ *path = &p[si]; /* Return pointer to the next segment */
+ c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
+
+ if (!i) return FR_INVALID_NAME; /* Reject nul string */
+ if (sfn[0] == DDE) sfn[0] = NDDE; /* When first char collides with DDE, replace it with 0x05 */
+
+ if (ni == 8) b <<= 2;
+ if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
+ if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
+
+ sfn[NS] = c; /* Store NT flag, File name is created */
+
+ return FR_OK;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get file information from directory entry */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+void get_fileinfo ( /* No return code */
+ DIR *dj, /* Pointer to the directory object */
+ FILINFO *fno /* Pointer to the file information to be filled */
+)
+{
+ UINT i;
+ BYTE nt, *dir;
+ TCHAR *p, c;
+
+
+ p = fno->fname;
+ if (dj->sect) {
+ dir = dj->dir;
+ nt = dir[DIR_NTres]; /* NT flag */
+ for (i = 0; i < 8; i++) { /* Copy name body */
+ c = dir[i];
+ if (c == ' ') break;
+ if (c == NDDE) c = (TCHAR)DDE;
+ if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i+1]))
+ c = (c << 8) | dir[++i];
+ c = ff_convert(c, 1);
+ if (!c) c = '?';
+#endif
+ *p++ = c;
+ }
+ if (dir[8] != ' ') { /* Copy name extension */
+ *p++ = '.';
+ for (i = 8; i < 11; i++) {
+ c = dir[i];
+ if (c == ' ') break;
+ if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i+1]))
+ c = (c << 8) | dir[++i];
+ c = ff_convert(c, 1);
+ if (!c) c = '?';
+#endif
+ *p++ = c;
+ }
+ }
+ fno->fattrib = dir[DIR_Attr]; /* Attribute */
+ fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
+ fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
+ fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
+ }
+ *p = 0; /* Terminate SFN str by a \0 */
+
+#if _USE_LFN
+ if (fno->lfname && fno->lfsize) {
+ TCHAR *tp = fno->lfname;
+ WCHAR w, *lfn;
+
+ i = 0;
+ if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
+ lfn = dj->lfn;
+ while ((w = *lfn++) != 0) { /* Get an LFN char */
+#if !_LFN_UNICODE
+ w = ff_convert(w, 0); /* Unicode -> OEM conversion */
+ if (!w) { i = 0; break; } /* Could not convert, no LFN */
+ if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC (always false on SBCS cfg) */
+ tp[i++] = (TCHAR)(w >> 8);
+#endif
+ if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overflow, no LFN */
+ tp[i++] = (TCHAR)w;
+ }
+ }
+ tp[i] = 0; /* Terminate the LFN str by a \0 */
+ }
+#endif
+}
+#endif /* _FS_MINIMIZE <= 1 */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Follow a file path */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
+ DIR *dj, /* Directory object to return last directory and found object */
+ const TCHAR *path /* Full-path string to find a file or directory */
+)
+{
+ FRESULT res;
+ BYTE *dir, ns;
+
+
+#if _FS_RPATH
+ if (*path == '/' || *path == '\\') { /* There is a heading separator */
+ path++; dj->sclust = 0; /* Strip it and start from the root dir */
+ } else { /* No heading separator */
+ dj->sclust = dj->fs->cdir; /* Start from the current dir */
+ }
+#else
+ if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
+ path++;
+ dj->sclust = 0; /* Start from the root dir */
+#endif
+
+ if ((UINT)*path < ' ') { /* Nul path means the start directory itself */
+ res = dir_sdi(dj, 0);
+ dj->dir = 0;
+
+ } else { /* Follow path */
+ for (;;) {
+ res = create_name(dj, &path); /* Get a segment */
+ if (res != FR_OK) break;
+ res = dir_find(dj); /* Find it */
+ ns = *(dj->fn+NS);
+ if (res != FR_OK) { /* Failed to find the object */
+ if (res != FR_NO_FILE) break; /* Abort if any hard error occured */
+ /* Object not found */
+ if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
+ dj->sclust = 0; dj->dir = 0; /* It is the root dir */
+ res = FR_OK;
+ if (!(ns & NS_LAST)) continue;
+ } else { /* Could not find the object */
+ if (!(ns & NS_LAST)) res = FR_NO_PATH;
+ }
+ break;
+ }
+ if (ns & NS_LAST) break; /* Last segment match. Function completed. */
+ dir = dj->dir; /* There is next segment. Follow the sub directory */
+ if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
+ res = FR_NO_PATH; break;
+ }
+ dj->sclust = LD_CLUST(dir);
+ }
+ }
+
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Load boot record and check if it is an FAT boot record */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */
+ FATFS *fs, /* File system object */
+ DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
+)
+{
+ if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
+ return 3;
+ if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
+ return 2;
+
+ if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
+ return 0;
+ if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
+ return 0;
+
+ return 1;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Check if the file system object is valid or not */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
+ const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
+ FATFS **rfs, /* Pointer to pointer to the found file system object */
+ BYTE chk_wp /* !=0: Check media write protection for write access */
+)
+{
+ BYTE fmt, b, *tbl;
+ UINT vol;
+ DSTATUS stat;
+ DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
+ WORD nrsv;
+ const TCHAR *p = *path;
+ FATFS *fs;
+
+ /* Get logical drive number from the path name */
+ vol = p[0] - '0'; /* Is there a drive number? */
+ if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
+ p += 2; *path = p; /* Return pointer to the path name */
+ } else { /* No drive number is given */
+#if _FS_RPATH
+ vol = CurrVol; /* Use current drive */
+#else
+ vol = 0; /* Use drive 0 */
+#endif
+ }
+
+ /* Check if the logical drive is valid or not */
+ if (vol >= _VOLUMES) /* Is the drive number valid? */
+ return FR_INVALID_DRIVE;
+ *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */
+ if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
+
+ ENTER_FF(fs); /* Lock file system */
+
+ if (fs->fs_type) { /* If the logical drive has been mounted */
+ stat = disk_status(fs->drv);
+ if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
+#if !_FS_READONLY
+ if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
+ return FR_WRITE_PROTECTED;
+#endif
+ return FR_OK; /* The file system object is valid */
+ }
+ }
+
+ /* The logical drive must be mounted. */
+ /* Following code attempts to mount a volume. (analyze BPB and initialize the fs object) */
+
+ fs->fs_type = 0; /* Clear the file system object */
+ fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
+ stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
+ if (stat & STA_NOINIT) /* Check if the initialization succeeded */
+ return FR_NOT_READY; /* Failed to initialize due to no media or hard error */
+#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
+ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
+ return FR_DISK_ERR;
+#endif
+#if !_FS_READONLY
+ if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
+ return FR_WRITE_PROTECTED;
+#endif
+ /* Search FAT partition on the drive. Supports only generic partitionings, FDISK and SFD. */
+ fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */
+ if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */
+ /* Check the partition listed in top of the partition table */
+ tbl = &fs->win[MBR_Table + LD2PT(vol) * SZ_PTE];/* Partition table */
+ if (tbl[4]) { /* Is the partition existing? */
+ bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
+ fmt = check_fs(fs, bsect); /* Check the partition */
+ }
+ }
+ if (fmt == 3) return FR_DISK_ERR;
+ if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
+
+ /* Following code initializes the file system object */
+
+ if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
+ return FR_NO_FILESYSTEM;
+
+ fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
+ if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
+ fs->fsize = fasize;
+
+ fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
+ if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
+ fasize *= b; /* Number of sectors for FAT area */
+
+ fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
+ if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be power of 2) */
+
+ fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
+ if (fs->n_rootdir % (SS(fs) / SZ_DIR)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
+
+ tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
+ if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
+
+ nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
+ if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
+
+ /* Determine the FAT sub type */
+ sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZ_DIR); /* RSV+FAT+DIR */
+ if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
+ if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ fmt = FS_FAT12;
+ if (nclst >= MIN_FAT16) fmt = FS_FAT16;
+ if (nclst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Boundaries and Limits */
+ fs->n_fatent = nclst + 2; /* Number of FAT entries */
+ fs->database = bsect + sysect; /* Data start sector */
+ fs->fatbase = bsect + nrsv; /* FAT start sector */
+ if (fmt == FS_FAT32) {
+ if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
+ fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
+ szbfat = fs->n_fatent * 4; /* (Required FAT size) */
+ } else {
+ if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
+ fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
+ szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
+ fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
+ }
+ if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (BPB_FATSz must not be less than required) */
+ return FR_NO_FILESYSTEM;
+
+#if !_FS_READONLY
+ /* Initialize cluster allocation information */
+ fs->free_clust = 0xFFFFFFFF;
+ fs->last_clust = 0;
+
+ /* Get fsinfo if available */
+ if (fmt == FS_FAT32) {
+ fs->fsi_flag = 0;
+ fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
+ if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
+ LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
+ LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
+ LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
+ fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
+ fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
+ }
+ }
+#endif
+ fs->fs_type = fmt; /* FAT sub-type */
+ fs->id = ++Fsid; /* File system mount ID */
+ fs->winsect = 0; /* Invalidate sector cache */
+ fs->wflag = 0;
+#if _FS_RPATH
+ fs->cdir = 0; /* Current directory (root dir) */
+#endif
+#if _FS_SHARE /* Clear file lock semaphores */
+ clear_lock(fs);
+#endif
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Check if the file/dir object is valid or not */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
+ FATFS *fs, /* Pointer to the file system object */
+ WORD id /* Member id of the target object to be checked */
+)
+{
+ if (!fs || !fs->fs_type || fs->id != id)
+ return FR_INVALID_OBJECT;
+
+ ENTER_FF(fs); /* Lock file system */
+
+ if (disk_status(fs->drv) & STA_NOINIT)
+ return FR_NOT_READY;
+
+ return FR_OK;
+}
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Public Functions
+
+--------------------------------------------------------------------------*/
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Mount/Unmount a Logical Drive */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mount (
+ BYTE vol, /* Logical drive number to be mounted/unmounted */
+ FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
+)
+{
+ FATFS *rfs;
+
+
+ if (vol >= _VOLUMES) /* Check if the drive number is valid */
+ return FR_INVALID_DRIVE;
+ rfs = FatFs[vol]; /* Get current fs object */
+
+ if (rfs) {
+#if _FS_SHARE
+ clear_lock(rfs);
+#endif
+#if _FS_REENTRANT /* Discard sync object of the current volume */
+ if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
+#endif
+ rfs->fs_type = 0; /* Clear old fs object */
+ }
+
+ if (fs) {
+ fs->fs_type = 0; /* Clear new fs object */
+#if _FS_REENTRANT /* Create sync object for the new volume */
+ if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
+#endif
+ }
+ FatFs[vol] = fs; /* Register new fs object */
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Open or Create a File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_open (
+ FIL *fp, /* Pointer to the blank file object */
+ const TCHAR *path, /* Pointer to the file name */
+ BYTE mode /* Access mode and file open mode flags */
+)
+{
+ FRESULT res;
+ DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ fp->fs = 0; /* Clear file object */
+
+#if !_FS_READONLY
+ mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
+ res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
+#else
+ mode &= FA_READ;
+ res = chk_mounted(&path, &dj.fs, 0);
+#endif
+ INIT_BUF(dj);
+ if (res == FR_OK)
+ res = follow_path(&dj, path); /* Follow the file path */
+ dir = dj.dir;
+
+#if !_FS_READONLY /* R/W configuration */
+ if (res == FR_OK) {
+ if (!dir) /* Current dir itself */
+ res = FR_INVALID_NAME;
+#if _FS_SHARE
+ else
+ res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+#endif
+ }
+ /* Create or Open a file */
+ if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
+ DWORD dw, cl;
+
+ if (res != FR_OK) { /* No file, create new */
+ if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
+#if _FS_SHARE
+ res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
+#else
+ res = dir_register(&dj);
+#endif
+ mode |= FA_CREATE_ALWAYS; /* File is created */
+ dir = dj.dir; /* New entry */
+ }
+ else { /* Any object is already existing */
+ if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) { /* Cannot overwrite it (R/O or DIR) */
+ res = FR_DENIED;
+ } else {
+ if (mode & FA_CREATE_NEW) /* Cannot create as new file */
+ res = FR_EXIST;
+ }
+ }
+ if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
+ dw = get_fattime(); /* Created time */
+ ST_DWORD(dir+DIR_CrtTime, dw);
+ dir[DIR_Attr] = 0; /* Reset attribute */
+ ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
+ cl = LD_CLUST(dir); /* Get start cluster */
+ ST_CLUST(dir, 0); /* cluster = 0 */
+ dj.fs->wflag = 1;
+ if (cl) { /* Remove the cluster chain if exist */
+ dw = dj.fs->winsect;
+ res = remove_chain(dj.fs, cl);
+ if (res == FR_OK) {
+ dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
+ res = move_window(dj.fs, dw);
+ }
+ }
+ }
+ }
+ else { /* Open an existing file */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
+ res = FR_NO_FILE;
+ } else {
+ if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+ res = FR_DENIED;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ if (mode & FA_CREATE_ALWAYS) /* Set file change flag if created or overwritten */
+ mode |= FA__WRITTEN;
+ fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
+ fp->dir_ptr = dir;
+#if _FS_SHARE
+ fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (!fp->lockid) res = FR_INT_ERR;
+#endif
+ }
+
+#else /* R/O configuration */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (!dir) { /* Current dir itself */
+ res = FR_INVALID_NAME;
+ } else {
+ if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
+ res = FR_NO_FILE;
+ }
+ }
+#endif
+ FREE_BUF();
+
+ if (res == FR_OK) {
+ fp->flag = mode; /* File access mode */
+ fp->sclust = LD_CLUST(dir); /* File start cluster */
+ fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
+ fp->fptr = 0; /* File pointer */
+ fp->dsect = 0;
+#if _USE_FASTSEEK
+ fp->cltbl = 0; /* Normal seek mode */
+#endif
+ fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_read (
+ FIL *fp, /* Pointer to the file object */
+ void *buff, /* Pointer to data buffer */
+ UINT btr, /* Number of bytes to read */
+ UINT *br /* Pointer to number of bytes read */
+)
+{
+ FRESULT res;
+ DWORD clst, sect, remain;
+ UINT rcnt, cc;
+ BYTE csect, *rbuff = buff;
+
+
+ *br = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Aborted file? */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_READ)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+ remain = fp->fsize - fp->fptr;
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+
+ for ( ; btr; /* Repeat until all data read */
+ rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->sclust; /* Follow from the origin */
+ } else { /* Middle or end of the file */
+#if _USE_FASTSEEK
+ if (fp->cltbl)
+ clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
+ else
+#endif
+ clst = get_fat(fp->fs, fp->clust); /* Follow cluster chain on the FAT */
+ }
+ if (clst < 2) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->clust = clst; /* Update current cluster */
+ }
+ sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Read maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
+#if _FS_TINY
+ if (fp->fs->wflag && fp->fs->winsect - sect < cc)
+ mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
+#else
+ if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
+ mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
+#endif
+#endif
+ rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ continue;
+ }
+#if !_FS_TINY
+ if (fp->dsect != sect) { /* Load data sector if not in cache */
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK) /* Fill sector cache */
+ ABORT(fp->fs, FR_DISK_ERR);
+ }
+#endif
+ fp->dsect = sect;
+ }
+ rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
+ if (rcnt > btr) rcnt = btr;
+#if _FS_TINY
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
+#else
+ mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
+#endif
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Write File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_write (
+ FIL *fp, /* Pointer to the file object */
+ const void *buff, /* Pointer to the data to be written */
+ UINT btw, /* Number of bytes to write */
+ UINT *bw /* Pointer to number of bytes written */
+)
+{
+ FRESULT res;
+ DWORD clst, sect;
+ UINT wcnt, cc;
+ const BYTE *wbuff = buff;
+ BYTE csect;
+
+
+ *bw = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Aborted file? */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+ if ((DWORD)(fp->fsize + btw) < fp->fsize) btw = 0; /* File size cannot reach 4GB */
+
+ for ( ; btw; /* Repeat until all data written */
+ wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->sclust; /* Follow from the origin */
+ if (clst == 0) /* When no cluster is allocated, */
+ fp->sclust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
+ } else { /* Middle or end of the file */
+#if _USE_FASTSEEK
+ if (fp->cltbl)
+ clst = clmt_clust(fp, fp->fptr); /* Get cluster# from the CLMT */
+ else
+#endif
+ clst = create_chain(fp->fs, fp->clust); /* Follow or stretch cluster chain on the FAT */
+ }
+ if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->clust = clst; /* Update current cluster */
+ }
+#if _FS_TINY
+ if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write-back sector cache */
+ ABORT(fp->fs, FR_DISK_ERR);
+#else
+ if (fp->flag & FA__DIRTY) { /* Write-back sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ sect = clust2sect(fp->fs, fp->clust); /* Get current sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Write maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#if _FS_TINY
+ if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
+ mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
+ fp->fs->wflag = 0;
+ }
+#else
+ if (fp->dsect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
+ mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ continue;
+ }
+#if _FS_TINY
+ if (fp->fptr >= fp->fsize) { /* Avoid silly cache filling at growing edge */
+ if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
+ fp->fs->winsect = sect;
+ }
+#else
+ if (fp->dsect != sect) { /* Fill sector cache with file data */
+ if (fp->fptr < fp->fsize &&
+ disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ }
+#endif
+ fp->dsect = sect;
+ }
+ wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs));/* Put partial sector into file I/O buffer */
+ if (wcnt > btw) wcnt = btw;
+#if _FS_TINY
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
+ fp->fs->wflag = 1;
+#else
+ mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
+ fp->flag |= FA__DIRTY;
+#endif
+ }
+
+ if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
+ fp->flag |= FA__WRITTEN; /* Set file change flag */
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Synchronize the File Object */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_sync (
+ FIL *fp /* Pointer to the file object */
+)
+{
+ FRESULT res;
+ DWORD tim;
+ BYTE *dir;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
+#if !_FS_TINY /* Write-back dirty buffer */
+ if (fp->flag & FA__DIRTY) {
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ LEAVE_FF(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ /* Update the directory entry */
+ res = move_window(fp->fs, fp->dir_sect);
+ if (res == FR_OK) {
+ dir = fp->dir_ptr;
+ dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
+ ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
+ ST_CLUST(dir, fp->sclust); /* Update start cluster */
+ tim = get_fattime(); /* Update updated time */
+ ST_DWORD(dir+DIR_WrtTime, tim);
+ fp->flag &= ~FA__WRITTEN;
+ fp->fs->wflag = 1;
+ res = sync(fp->fs);
+ }
+ }
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_close (
+ FIL *fp /* Pointer to the file object to be closed */
+)
+{
+ FRESULT res;
+
+#if _FS_READONLY
+ FATFS *fs = fp->fs;
+ res = validate(fs, fp->id);
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
+ LEAVE_FF(fs, res);
+
+#else
+ res = f_sync(fp); /* Flush cached data */
+#if _FS_SHARE
+ if (res == FR_OK) { /* Decrement open counter */
+#if _FS_REENTRANT
+ res = validate(fp->fs, fp->id);
+ if (res == FR_OK) {
+ res = dec_lock(fp->lockid);
+ unlock_fs(fp->fs, FR_OK);
+ }
+#else
+ res = dec_lock(fp->lockid);
+#endif
+ }
+#endif
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
+ return res;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Current Drive/Directory Handlings */
+/*-----------------------------------------------------------------------*/
+
+#if _FS_RPATH >= 1
+
+FRESULT f_chdrive (
+ BYTE drv /* Drive number */
+)
+{
+ if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
+
+ CurrVol = drv;
+
+ return FR_OK;
+}
+
+
+
+FRESULT f_chdir (
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ DIR dj;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the path */
+ FREE_BUF();
+ if (res == FR_OK) { /* Follow completed */
+ if (!dj.dir) {
+ dj.fs->cdir = dj.sclust; /* Start directory itself */
+ } else {
+ if (dj.dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
+ dj.fs->cdir = LD_CLUST(dj.dir);
+ else
+ res = FR_NO_PATH; /* Reached but a file */
+ }
+ }
+ if (res == FR_NO_FILE) res = FR_NO_PATH;
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+#if _FS_RPATH >= 2
+FRESULT f_getcwd (
+ TCHAR *path, /* Pointer to the directory path */
+ UINT sz_path /* Size of path */
+)
+{
+ FRESULT res;
+ DIR dj;
+ UINT i, n;
+ DWORD ccl;
+ TCHAR *tp;
+ FILINFO fno;
+ DEF_NAMEBUF;
+
+
+ *path = 0;
+ res = chk_mounted((const TCHAR**)&path, &dj.fs, 0); /* Get current volume */
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ i = sz_path; /* Bottom of buffer (dir stack base) */
+ dj.sclust = dj.fs->cdir; /* Start to follow upper dir from current dir */
+ while ((ccl = dj.sclust) != 0) { /* Repeat while current dir is a sub-dir */
+ res = dir_sdi(&dj, 1); /* Get parent dir */
+ if (res != FR_OK) break;
+ res = dir_read(&dj);
+ if (res != FR_OK) break;
+ dj.sclust = LD_CLUST(dj.dir); /* Goto parent dir */
+ res = dir_sdi(&dj, 0);
+ if (res != FR_OK) break;
+ do { /* Find the entry links to the child dir */
+ res = dir_read(&dj);
+ if (res != FR_OK) break;
+ if (ccl == LD_CLUST(dj.dir)) break; /* Found the entry */
+ res = dir_next(&dj, 0);
+ } while (res == FR_OK);
+ if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
+ if (res != FR_OK) break;
+#if _USE_LFN
+ fno.lfname = path;
+ fno.lfsize = i;
+#endif
+ get_fileinfo(&dj, &fno); /* Get the dir name and push it to the buffer */
+ tp = fno.fname;
+ if (_USE_LFN && *path) tp = path;
+ for (n = 0; tp[n]; n++) ;
+ if (i < n + 3) {
+ res = FR_NOT_ENOUGH_CORE; break;
+ }
+ while (n) path[--i] = tp[--n];
+ path[--i] = '/';
+ }
+ tp = path;
+ if (res == FR_OK) {
+ *tp++ = '0' + CurrVol; /* Put drive number */
+ *tp++ = ':';
+ if (i == sz_path) { /* Root-dir */
+ *tp++ = '/';
+ } else { /* Sub-dir */
+ do /* Add stacked path str */
+ *tp++ = path[i++];
+ while (i < sz_path);
+ }
+ }
+ *tp = 0;
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+#endif /* _FS_RPATH >= 2 */
+#endif /* _FS_RPATH >= 1 */
+
+
+
+#if _FS_MINIMIZE <= 2
+/*-----------------------------------------------------------------------*/
+/* Seek File R/W Pointer */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_lseek (
+ FIL *fp, /* Pointer to the file object */
+ DWORD ofs /* File pointer from top of file */
+)
+{
+ FRESULT res;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check abort flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+
+#if _USE_FASTSEEK
+ if (fp->cltbl) { /* Fast seek */
+ DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
+
+ if (ofs == CREATE_LINKMAP) { /* Create CLMT */
+ tbl = fp->cltbl;
+ tlen = *tbl++; ulen = 2; /* Given table size and required table size */
+ cl = fp->sclust; /* Top of the chain */
+ if (cl) {
+ do {
+ /* Get a fragment */
+ tcl = cl; ncl = 0; ulen += 2; /* Top, length and used items */
+ do {
+ pcl = cl; ncl++;
+ cl = get_fat(fp->fs, cl);
+ if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ } while (cl == pcl + 1);
+ if (ulen <= tlen) { /* Store the length and top of the fragment */
+ *tbl++ = ncl; *tbl++ = tcl;
+ }
+ } while (cl < fp->fs->n_fatent); /* Repeat until end of chain */
+ }
+ *fp->cltbl = ulen; /* Number of items used */
+ if (ulen <= tlen)
+ *tbl = 0; /* Terminate table */
+ else
+ res = FR_NOT_ENOUGH_CORE; /* Given table size is smaller than required */
+
+ } else { /* Fast seek */
+ if (ofs > fp->fsize) /* Clip offset at the file size */
+ ofs = fp->fsize;
+ fp->fptr = ofs; /* Set file pointer */
+ if (ofs) {
+ fp->clust = clmt_clust(fp, ofs - 1);
+ dsc = clust2sect(fp->fs, fp->clust);
+ if (!dsc) ABORT(fp->fs, FR_INT_ERR);
+ dsc += (ofs - 1) / SS(fp->fs) & (fp->fs->csize - 1);
+ if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) { /* Refill sector cache if needed */
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK) /* Load current sector */
+ ABORT(fp->fs, FR_DISK_ERR);
+#endif
+ fp->dsect = dsc;
+ }
+ }
+ }
+ } else
+#endif
+
+ /* Normal Seek */
+ {
+ DWORD clst, bcs, nsect, ifptr;
+
+ if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
+#if !_FS_READONLY
+ && !(fp->flag & FA_WRITE)
+#endif
+ ) ofs = fp->fsize;
+
+ ifptr = fp->fptr;
+ fp->fptr = nsect = 0;
+ if (ofs) {
+ bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
+ if (ifptr > 0 &&
+ (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
+ fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
+ ofs -= fp->fptr;
+ clst = fp->clust;
+ } else { /* When seek to back cluster, */
+ clst = fp->sclust; /* start from the first cluster */
+#if !_FS_READONLY
+ if (clst == 0) { /* If no cluster chain, create a new chain */
+ clst = create_chain(fp->fs, 0);
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->sclust = clst;
+ }
+#endif
+ fp->clust = clst;
+ }
+ if (clst != 0) {
+ while (ofs > bcs) { /* Cluster following loop */
+#if !_FS_READONLY
+ if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
+ clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
+ if (clst == 0) { /* When disk gets full, clip file size */
+ ofs = bcs; break;
+ }
+ } else
+#endif
+ clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
+ fp->clust = clst;
+ fp->fptr += bcs;
+ ofs -= bcs;
+ }
+ fp->fptr += ofs;
+ if (ofs % SS(fp->fs)) {
+ nsect = clust2sect(fp->fs, clst); /* Current sector */
+ if (!nsect) ABORT(fp->fs, FR_INT_ERR);
+ nsect += ofs / SS(fp->fs);
+ }
+ }
+ }
+ if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) { /* Fill sector cache if needed */
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write-back dirty sector cache */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK) /* Fill sector cache */
+ ABORT(fp->fs, FR_DISK_ERR);
+#endif
+ fp->dsect = nsect;
+ }
+#if !_FS_READONLY
+ if (fp->fptr > fp->fsize) { /* Set file change flag if the file size is extended */
+ fp->fsize = fp->fptr;
+ fp->flag |= FA__WRITTEN;
+ }
+#endif
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE <= 1
+/*-----------------------------------------------------------------------*/
+/* Create a Directroy Object */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_opendir (
+ DIR *dj, /* Pointer to directory object to create */
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj->fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(*dj);
+ res = follow_path(dj, path); /* Follow the path to the directory */
+ FREE_BUF();
+ if (res == FR_OK) { /* Follow completed */
+ if (dj->dir) { /* It is not the root dir */
+ if (dj->dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
+ dj->sclust = LD_CLUST(dj->dir);
+ } else { /* The object is not a directory */
+ res = FR_NO_PATH;
+ }
+ }
+ if (res == FR_OK) {
+ dj->id = dj->fs->id;
+ res = dir_sdi(dj, 0); /* Rewind dir */
+ }
+ }
+ if (res == FR_NO_FILE) res = FR_NO_PATH;
+ }
+
+ LEAVE_FF(dj->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Directory Entry in Sequense */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_readdir (
+ DIR *dj, /* Pointer to the open directory object */
+ FILINFO *fno /* Pointer to file information to return */
+)
+{
+ FRESULT res;
+ DEF_NAMEBUF;
+
+
+ res = validate(dj->fs, dj->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (!fno) {
+ res = dir_sdi(dj, 0); /* Rewind the directory object */
+ } else {
+ INIT_BUF(*dj);
+ res = dir_read(dj); /* Read an directory item */
+ if (res == FR_NO_FILE) { /* Reached end of dir */
+ dj->sect = 0;
+ res = FR_OK;
+ }
+ if (res == FR_OK) { /* A valid entry is found */
+ get_fileinfo(dj, fno); /* Get the object information */
+ res = dir_next(dj, 0); /* Increment index for next */
+ if (res == FR_NO_FILE) {
+ dj->sect = 0;
+ res = FR_OK;
+ }
+ }
+ FREE_BUF();
+ }
+ }
+
+ LEAVE_FF(dj->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE == 0
+/*-----------------------------------------------------------------------*/
+/* Get File Status */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_stat (
+ const TCHAR *path, /* Pointer to the file path */
+ FILINFO *fno /* Pointer to file information to return */
+)
+{
+ FRESULT res;
+ DIR dj;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) { /* Follow completed */
+ if (dj.dir) /* Found an object */
+ get_fileinfo(&dj, fno);
+ else /* It is root dir */
+ res = FR_INVALID_NAME;
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Get Number of Free Clusters */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getfree (
+ const TCHAR *path, /* Pointer to the logical drive number (root dir) */
+ DWORD *nclst, /* Pointer to the variable to return number of free clusters */
+ FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
+)
+{
+ FRESULT res;
+ DWORD n, clst, sect, stat;
+ UINT i;
+ BYTE fat, *p;
+
+
+ /* Get drive number */
+ res = chk_mounted(&path, fatfs, 0);
+ if (res == FR_OK) {
+ /* If free_clust is valid, return it without full cluster scan */
+ if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) {
+ *nclst = (*fatfs)->free_clust;
+ } else {
+ /* Get number of free clusters */
+ fat = (*fatfs)->fs_type;
+ n = 0;
+ if (fat == FS_FAT12) {
+ clst = 2;
+ do {
+ stat = get_fat(*fatfs, clst);
+ if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
+ if (stat == 1) { res = FR_INT_ERR; break; }
+ if (stat == 0) n++;
+ } while (++clst < (*fatfs)->n_fatent);
+ } else {
+ clst = (*fatfs)->n_fatent;
+ sect = (*fatfs)->fatbase;
+ i = 0; p = 0;
+ do {
+ if (!i) {
+ res = move_window(*fatfs, sect++);
+ if (res != FR_OK) break;
+ p = (*fatfs)->win;
+ i = SS(*fatfs);
+ }
+ if (fat == FS_FAT16) {
+ if (LD_WORD(p) == 0) n++;
+ p += 2; i -= 2;
+ } else {
+ if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
+ p += 4; i -= 4;
+ }
+ } while (--clst);
+ }
+ (*fatfs)->free_clust = n;
+ if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+ *nclst = n;
+ }
+ }
+ LEAVE_FF(*fatfs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Truncate File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_truncate (
+ FIL *fp /* Pointer to the file object */
+)
+{
+ FRESULT res;
+ DWORD ncl;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (fp->flag & FA__ERROR) { /* Check abort flag */
+ res = FR_INT_ERR;
+ } else {
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ res = FR_DENIED;
+ }
+ }
+ if (res == FR_OK) {
+ if (fp->fsize > fp->fptr) {
+ fp->fsize = fp->fptr; /* Set file size to current R/W point */
+ fp->flag |= FA__WRITTEN;
+ if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
+ res = remove_chain(fp->fs, fp->sclust);
+ fp->sclust = 0;
+ } else { /* When truncate a part of the file, remove remaining clusters */
+ ncl = get_fat(fp->fs, fp->clust);
+ res = FR_OK;
+ if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (ncl == 1) res = FR_INT_ERR;
+ if (res == FR_OK && ncl < fp->fs->n_fatent) {
+ res = put_fat(fp->fs, fp->clust, 0x0FFFFFFF);
+ if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ }
+ }
+ }
+ if (res != FR_OK) fp->flag |= FA__ERROR;
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Delete a File or Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_unlink (
+ const TCHAR *path /* Pointer to the file or directory path */
+)
+{
+ FRESULT res;
+ DIR dj, sdj;
+ BYTE *dir;
+ DWORD dclst;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME; /* Cannot remove dot entry */
+#if _FS_SHARE
+ if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
+#endif
+ if (res == FR_OK) { /* The object is accessible */
+ dir = dj.dir;
+ if (!dir) {
+ res = FR_INVALID_NAME; /* Cannot remove the start directory */
+ } else {
+ if (dir[DIR_Attr] & AM_RDO)
+ res = FR_DENIED; /* Cannot remove R/O object */
+ }
+ dclst = LD_CLUST(dir);
+ if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
+ if (dclst < 2) {
+ res = FR_INT_ERR;
+ } else {
+ mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */
+ sdj.sclust = dclst;
+ res = dir_sdi(&sdj, 2); /* Exclude dot entries */
+ if (res == FR_OK) {
+ res = dir_read(&sdj);
+ if (res == FR_OK /* Not empty dir */
+#if _FS_RPATH
+ || dclst == sdj.fs->cdir /* Current dir */
+#endif
+ ) res = FR_DENIED;
+ if (res == FR_NO_FILE) res = FR_OK; /* Empty */
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&dj); /* Remove the directory entry */
+ if (res == FR_OK) {
+ if (dclst) /* Remove the cluster chain if exist */
+ res = remove_chain(dj.fs, dclst);
+ if (res == FR_OK) res = sync(dj.fs);
+ }
+ }
+ }
+ FREE_BUF();
+ }
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create a Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mkdir (
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ DIR dj;
+ BYTE *dir, n;
+ DWORD dsc, dcl, pcl, tim = get_fattime();
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
+ if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_NO_FILE) { /* Can create a new directory */
+ dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
+ res = FR_OK;
+ if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
+ if (dcl == 1) res = FR_INT_ERR;
+ if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (res == FR_OK) /* Flush FAT */
+ res = move_window(dj.fs, 0);
+ if (res == FR_OK) { /* Initialize the new directory table */
+ dsc = clust2sect(dj.fs, dcl);
+ dir = dj.fs->win;
+ mem_set(dir, 0, SS(dj.fs));
+ mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
+ dir[DIR_Name] = '.';
+ dir[DIR_Attr] = AM_DIR;
+ ST_DWORD(dir+DIR_WrtTime, tim);
+ ST_CLUST(dir, dcl);
+ mem_cpy(dir+SZ_DIR, dir, SZ_DIR); /* Create ".." entry */
+ dir[33] = '.'; pcl = dj.sclust;
+ if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
+ pcl = 0;
+ ST_CLUST(dir+SZ_DIR, pcl);
+ for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
+ dj.fs->winsect = dsc++;
+ dj.fs->wflag = 1;
+ res = move_window(dj.fs, 0);
+ if (res != FR_OK) break;
+ mem_set(dir, 0, SS(dj.fs));
+ }
+ }
+ if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
+ if (res != FR_OK) {
+ remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
+ } else {
+ dir = dj.dir;
+ dir[DIR_Attr] = AM_DIR; /* Attribute */
+ ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
+ ST_CLUST(dir, dcl); /* Table start cluster */
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Attribute */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_chmod (
+ const TCHAR *path, /* Pointer to the file path */
+ BYTE value, /* Attribute bits */
+ BYTE mask /* Attribute mask to change */
+)
+{
+ FRESULT res;
+ DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_OK) {
+ dir = dj.dir;
+ if (!dir) { /* Is it a root directory? */
+ res = FR_INVALID_NAME;
+ } else { /* File or sub directory */
+ mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
+ dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Timestamp */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_utime (
+ const TCHAR *path, /* Pointer to the file/directory name */
+ const FILINFO *fno /* Pointer to the time stamp to be set */
+)
+{
+ FRESULT res;
+ DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_OK) {
+ dir = dj.dir;
+ if (!dir) { /* Root directory */
+ res = FR_INVALID_NAME;
+ } else { /* File or sub-directory */
+ ST_WORD(dir+DIR_WrtTime, fno->ftime);
+ ST_WORD(dir+DIR_WrtDate, fno->fdate);
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Rename File/Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_rename (
+ const TCHAR *path_old, /* Pointer to the old name */
+ const TCHAR *path_new /* Pointer to the new name */
+)
+{
+ FRESULT res;
+ DIR djo, djn;
+ BYTE buf[21], *dir;
+ DWORD dw;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path_old, &djo.fs, 1);
+ if (res == FR_OK) {
+ djn.fs = djo.fs;
+ INIT_BUF(djo);
+ res = follow_path(&djo, path_old); /* Check old object */
+ if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+#if _FS_SHARE
+ if (res == FR_OK) res = chk_lock(&djo, 2);
+#endif
+ if (res == FR_OK) { /* Old object is found */
+ if (!djo.dir) { /* Is root dir? */
+ res = FR_NO_FILE;
+ } else {
+ mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
+ mem_cpy(&djn, &djo, sizeof(DIR)); /* Check new object */
+ res = follow_path(&djn, path_new);
+ if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
+ if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
+/* Start critical section that any interruption or error can cause cross-link */
+ res = dir_register(&djn); /* Register the new entry */
+ if (res == FR_OK) {
+ dir = djn.dir; /* Copy object information except for name */
+ mem_cpy(dir+13, buf+2, 19);
+ dir[DIR_Attr] = buf[0] | AM_ARC;
+ djo.fs->wflag = 1;
+ if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
+ dw = clust2sect(djn.fs, LD_CLUST(dir));
+ if (!dw) {
+ res = FR_INT_ERR;
+ } else {
+ res = move_window(djn.fs, dw);
+ dir = djn.fs->win+SZ_DIR; /* .. entry */
+ if (res == FR_OK && dir[1] == '.') {
+ dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
+ ST_CLUST(dir, dw);
+ djn.fs->wflag = 1;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&djo); /* Remove old entry */
+ if (res == FR_OK)
+ res = sync(djo.fs);
+ }
+ }
+/* End critical section */
+ }
+ }
+ }
+ FREE_BUF();
+ }
+ LEAVE_FF(djo.fs, res);
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _FS_MINIMIZE == 0 */
+#endif /* _FS_MINIMIZE <= 1 */
+#endif /* _FS_MINIMIZE <= 2 */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Forward data to the stream directly (available on only tiny cfg) */
+/*-----------------------------------------------------------------------*/
+#if _USE_FORWARD && _FS_TINY
+
+FRESULT f_forward (
+ FIL *fp, /* Pointer to the file object */
+ UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
+ UINT btr, /* Number of bytes to forward */
+ UINT *bf /* Pointer to number of bytes forwarded */
+)
+{
+ FRESULT res;
+ DWORD remain, clst, sect;
+ UINT rcnt;
+ BYTE csect;
+
+
+ *bf = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check error flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_READ)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+
+ remain = fp->fsize - fp->fptr;
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+
+ for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
+ fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ if (!csect) { /* On the cluster boundary? */
+ clst = (fp->fptr == 0) ? /* On the top of the file? */
+ fp->sclust : get_fat(fp->fs, fp->clust);
+ if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->clust = clst; /* Update current cluster */
+ }
+ }
+ sect = clust2sect(fp->fs, fp->clust); /* Get current data sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ if (move_window(fp->fs, sect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->dsect = sect;
+ rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
+ if (rcnt > btr) rcnt = btr;
+ rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
+ if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+#endif /* _USE_FORWARD */
+
+
+
+#if _USE_MKFS && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Create File System on the Drive */
+/*-----------------------------------------------------------------------*/
+#define N_ROOTDIR 512 /* Number of root dir entries for FAT12/16 */
+#define N_FATS 1 /* Number of FAT copies (1 or 2) */
+
+
+FRESULT f_mkfs (
+ BYTE drv, /* Logical drive number */
+ BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
+ UINT au /* Allocation unit size [bytes] */
+)
+{
+ static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
+ static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
+ BYTE fmt, md, *tbl;
+ DWORD n_clst, vs, n, wsect;
+ UINT i;
+ DWORD b_vol, b_fat, b_dir, b_data; /* Offset (LBA) */
+ DWORD n_vol, n_rsv, n_fat, n_dir; /* Size */
+ FATFS *fs;
+ DSTATUS stat;
+
+
+ /* Check mounted drive and clear work area */
+ if (drv >= _VOLUMES) return FR_INVALID_DRIVE;
+ fs = FatFs[drv];
+ if (!fs) return FR_NOT_ENABLED;
+ fs->fs_type = 0;
+ drv = LD2PD(drv);
+
+ /* Get disk statics */
+ stat = disk_initialize(drv);
+ if (stat & STA_NOINIT) return FR_NOT_READY;
+ if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+#if _MAX_SS != 512 /* Get disk sector size */
+ if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK)
+ return FR_DISK_ERR;
+#endif
+ if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
+ return FR_DISK_ERR;
+ b_vol = (sfd) ? 0 : 63; /* Volume start sector */
+ n_vol -= b_vol;
+ if (au & (au - 1)) au = 0; /* Check validity of the AU size */
+ if (!au) { /* AU auto selection */
+ vs = n_vol / (2000 / (SS(fs) / 512));
+ for (i = 0; vs < vst[i]; i++) ;
+ au = cst[i];
+ }
+ au /= SS(fs); /* Number of sectors per cluster */
+ if (au == 0) au = 1;
+ if (au > 128) au = 128;
+
+ /* Pre-compute number of clusters and FAT syb-type */
+ n_clst = n_vol / au;
+ fmt = FS_FAT12;
+ if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
+ if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Determine offset and size of FAT structure */
+ if (fmt == FS_FAT32) {
+ n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
+ n_rsv = 32;
+ n_dir = 0;
+ } else {
+ n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
+ n_fat = (n_fat + SS(fs) - 1) / SS(fs);
+ n_rsv = 1;
+ n_dir = (DWORD)N_ROOTDIR * SZ_DIR / SS(fs);
+ }
+ b_fat = b_vol + n_rsv; /* FAT area start sector */
+ b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
+ b_data = b_dir + n_dir; /* Data area start sector */
+ if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */
+
+ /* Align data start sector to erase block boundary (for flash memory media) */
+ if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK || !n || n > 32768) n = 1;
+ n = (b_data + n - 1) & ~(n - 1); /* Next nearest erase block from current data start */
+ n = (n - b_data) / N_FATS;
+ if (fmt == FS_FAT32) { /* FAT32: Move FAT offset */
+ n_rsv += n;
+ b_fat += n;
+ } else { /* FAT12/16: Expand FAT size */
+ n_fat += n;
+ }
+
+ /* Determine number of clusters and final check of validity of the FAT sub-type */
+ n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
+ if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
+ || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
+ return FR_MKFS_ABORTED;
+
+ /* Create partition table if required */
+ if (sfd) { /* No patition table (SFD) */
+ md = 0xF0;
+ } else { /* With patition table (FDISK) */
+ DWORD n_disk = b_vol + n_vol;
+
+ mem_set(fs->win, 0, SS(fs));
+ tbl = fs->win+MBR_Table;
+ ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
+ if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
+ n_disk = n_disk / 63 / 255;
+ tbl[7] = (BYTE)n_disk;
+ tbl[6] = (BYTE)((n_disk >> 2) | 63);
+ } else {
+ ST_WORD(&tbl[6], 0xFFFF); /* CHS saturated */
+ }
+ tbl[5] = 254;
+ if (fmt != FS_FAT32) /* System ID */
+ tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06;
+ else
+ tbl[4] = 0x0c;
+ ST_DWORD(tbl+8, 63); /* Partition start in LBA */
+ ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
+ ST_WORD(fs->win+BS_55AA, 0xAA55); /* MBR signature */
+ if (disk_write(drv, fs->win, 0, 1) != RES_OK) /* Put the MBR into first physical sector */
+ return FR_DISK_ERR;
+ md = 0xF8;
+ }
+
+ /* Create volume boot record */
+ tbl = fs->win; /* Clear sector */
+ mem_set(tbl, 0, SS(fs));
+ mem_cpy(tbl, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code, OEM name */
+ i = SS(fs); /* Sector size */
+ ST_WORD(tbl+BPB_BytsPerSec, i);
+ tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
+ ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
+ tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
+ i = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
+ ST_WORD(tbl+BPB_RootEntCnt, i);
+ if (n_vol < 0x10000) { /* Number of total sectors */
+ ST_WORD(tbl+BPB_TotSec16, n_vol);
+ } else {
+ ST_DWORD(tbl+BPB_TotSec32, n_vol);
+ }
+ tbl[BPB_Media] = md; /* Media descriptor */
+ ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
+ ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
+ ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
+ n = get_fattime(); /* Use current time as VSN */
+ if (fmt == FS_FAT32) {
+ ST_DWORD(tbl+BS_VolID32, n); /* VSN */
+ ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
+ ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
+ ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
+ ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
+ tbl[BS_DrvNum32] = 0x80; /* Drive number */
+ tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab32, "NO NAME " "FAT32 ", 19); /* Volume label, FAT signature */
+ } else {
+ ST_DWORD(tbl+BS_VolID, n); /* VSN */
+ ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
+ tbl[BS_DrvNum] = 0x80; /* Drive number */
+ tbl[BS_BootSig] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab, "NO NAME " "FAT ", 19); /* Volume label, FAT signature */
+ }
+ ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
+ if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Write VBR */
+ return FR_DISK_ERR;
+ if (fmt == FS_FAT32) /* Write backup VBR if needed (VBR+6) */
+ disk_write(drv, tbl, b_vol + 6, 1);
+
+ /* Initialize FAT area */
+ wsect = b_fat;
+ for (i = 0; i < N_FATS; i++) { /* Initialize each FAT copy */
+ mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
+ n = md; /* Media descriptor byte */
+ if (fmt != FS_FAT32) {
+ n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
+ } else {
+ n |= 0xFFFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
+ ST_DWORD(tbl+4, 0xFFFFFFFF);
+ ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
+ }
+ if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
+ for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector writes */
+ if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ }
+ }
+
+ /* Initialize root directory */
+ i = (fmt == FS_FAT32) ? au : n_dir;
+ do {
+ if (disk_write(drv, tbl, wsect++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ } while (--i);
+
+#if _USE_ERASE /* Erase data area if needed */
+ {
+ DWORD eb[2];
+
+ eb[0] = wsect; eb[1] = wsect + (n_clst - ((fmt == FS_FAT32) ? 1 : 0)) * au - 1;
+ disk_ioctl(drv, CTRL_ERASE_SECTOR, eb);
+ }
+#endif
+
+ /* Create FSInfo if needed */
+ if (fmt == FS_FAT32) {
+ ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
+ ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
+ ST_DWORD(tbl+FSI_Free_Count, n_clst - 1); /* Number of free clusters */
+ ST_DWORD(tbl+FSI_Nxt_Free, 2); /* Last allocated cluster# */
+ ST_WORD(tbl+BS_55AA, 0xAA55);
+ disk_write(drv, tbl, b_vol + 1, 1); /* Write original (VBR+1) */
+ disk_write(drv, tbl, b_vol + 7, 1); /* Write backup (VBR+7) */
+ }
+
+ return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
+}
+
+#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* fil /* Pointer to the file object */
+)
+{
+ int n = 0;
+ TCHAR c, *p = buff;
+ BYTE s[2];
+ UINT rc;
+
+
+ while (n < len - 1) { /* Read bytes until buffer gets filled */
+ f_read(fil, s, 1, &rc);
+ if (rc != 1) break; /* Break on EOF or error */
+ c = s[0];
+#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
+ if (c >= 0x80) {
+ if (c < 0xC0) continue; /* Skip stray trailer */
+ if (c < 0xE0) { /* Two-byte sequense */
+ f_read(fil, s, 1, &rc);
+ if (rc != 1) break;
+ c = ((c & 0x1F) << 6) | (s[0] & 0x3F);
+ if (c < 0x80) c = '?';
+ } else {
+ if (c < 0xF0) { /* Three-byte sequense */
+ f_read(fil, s, 2, &rc);
+ if (rc != 2) break;
+ c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F);
+ if (c < 0x800) c = '?';
+ } else { /* Reject four-byte sequense */
+ c = '?';
+ }
+ }
+ }
+#endif
+#if _USE_STRFUNC >= 2
+ if (c == '\r') continue; /* Strip '\r' */
+#endif
+ *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 */
+/*-----------------------------------------------------------------------*/
+int f_putc (
+ TCHAR c, /* A character to be output */
+ FIL* fil /* Pointer to the file object */
+)
+{
+ UINT bw, btw;
+ BYTE s[3];
+
+
+#if _USE_STRFUNC >= 2
+ if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
+#endif
+
+#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
+ if (c < 0x80) { /* 7-bit */
+ s[0] = (BYTE)c;
+ btw = 1;
+ } else {
+ if (c < 0x800) { /* 11-bit */
+ s[0] = (BYTE)(0xC0 | (c >> 6));
+ s[1] = (BYTE)(0x80 | (c & 0x3F));
+ btw = 2;
+ } else { /* 16-bit */
+ s[0] = (BYTE)(0xE0 | (c >> 12));
+ s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F));
+ s[2] = (BYTE)(0x80 | (c & 0x3F));
+ btw = 3;
+ }
+ }
+#else /* Write the character without conversion */
+ s[0] = (BYTE)c;
+ btw = 1;
+#endif
+ f_write(fil, s, btw, &bw); /* Write the char to the file */
+ return (bw == btw) ? 1 : EOF; /* Return the result */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a string to the file */
+/*-----------------------------------------------------------------------*/
+int f_puts (
+ const TCHAR* str, /* Pointer to the string to be output */
+ FIL* fil /* Pointer to the file object */
+)
+{
+ int n;
+
+
+ for (n = 0; *str; str++, n++) {
+ if (f_putc(*str, fil) == EOF) return EOF;
+ }
+ return n;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a formatted string to the file */
+/*-----------------------------------------------------------------------*/
+int f_printf (
+ FIL* fil, /* Pointer to the file object */
+ const TCHAR* str, /* Pointer to the format string */
+ ... /* Optional arguments... */
+)
+{
+ va_list arp;
+ BYTE f, r;
+ UINT i, j, w;
+ ULONG v;
+ TCHAR c, d, s[16], *p;
+ int res, cc;
+
+
+ va_start(arp, str);
+
+ for (cc = res = 0; cc != EOF; res += cc) {
+ c = *str++;
+ if (c == 0) break; /* End of string */
+ if (c != '%') { /* Non escape character */
+ cc = f_putc(c, fil);
+ if (cc != EOF) cc = 1;
+ continue;
+ }
+ w = f = 0;
+ c = *str++;
+ if (c == '0') { /* Flag: '0' padding */
+ f = 1; c = *str++;
+ } else {
+ if (c == '-') { /* Flag: left justified */
+ f = 2; c = *str++;
+ }
+ }
+ while (IsDigit(c)) { /* Precision */
+ w = w * 10 + c - '0';
+ c = *str++;
+ }
+ if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
+ f |= 4; c = *str++;
+ }
+ 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++) ;
+ res = 0;
+ while (!(f & 2) && j++ < w) res += (cc = f_putc(' ', fil));
+ res += (cc = f_puts(p, fil));
+ while (j++ < w) res += (cc = f_putc(' ', fil));
+ if (cc != EOF) cc = res;
+ continue;
+ case 'C' : /* Character */
+ cc = f_putc((TCHAR)va_arg(arp, int), fil); 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 (passthrough) */
+ cc = f_putc(c, fil); continue;
+ }
+
+ /* Get an argument and put it in numeral */
+ v = (f & 4) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
+ if (d == 'D' && (v & 0x80000000)) {
+ v = 0 - v;
+ f |= 8;
+ }
+ i = 0;
+ do {
+ d = (TCHAR)(v % r); v /= r;
+ if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
+ s[i++] = d + '0';
+ } while (v && i < sizeof(s) / sizeof(s[0]));
+ if (f & 8) s[i++] = '-';
+ j = i; d = (f & 1) ? '0' : ' ';
+ res = 0;
+ while (!(f & 2) && j++ < w) res += (cc = f_putc(d, fil));
+ do res += (cc = f_putc(s[--i], fil)); while(i);
+ while (j++ < w) res += (cc = f_putc(' ', fil));
+ if (cc != EOF) cc = res;
+ }
+
+ va_end(arp);
+ return (cc == EOF) ? cc : res;
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _USE_STRFUNC */
projects / pub / USBasp.git / blobdiff