*/
USB_Descriptor_String_t PROGMEM ProductString =
{
- .Header = {.Size = USB_STRING_LEN(10), .Type = DTYPE_String},
+ .Header = {.Size = USB_STRING_LEN(22), .Type = DTYPE_String},
- .UnicodeString = L"Datalogger"
+ .UnicodeString = L"Temperature Datalogger"
};
/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
-FatFs Module Source Files R0.07e (C)ChaN, 2010
+FatFs Module Source Files R0.08 (C)ChaN, 2010
FILES
Added string functions: fputc(), fputs(), fprintf() and fgets().
Improved performance of f_lseek() on move to the same or following cluster.
- Apr 01, 2010, R0.07 Merged Tiny-FatFs as a buffer configuration option.
+ Apr 01, 2009, R0.07 Merged Tiny-FatFs as a buffer configuration option.
Added long file name support.
Added multiple code page support.
Added re-entrancy for multitask operation.
Changed result code of critical errors.
Renamed string functions to avoid name collision.
- Apr 14, 2010, R0.07a Separated out OS dependent code on reentrant cfg.
+ Apr 14, 2009, R0.07a Separated out OS dependent code on reentrant cfg.
Added multiple sector size support.
- Jun 21, 2010, R0.07c Fixed f_unlink() may return FR_OK on error.
+ Jun 21, 2009, R0.07c Fixed f_unlink() may return FR_OK on error.
Fixed wrong cache control in f_lseek().
Added relative path feature.
Added f_chdir().
Added f_chdrive().
Added proper case conversion for extended characters.
- Nov 03,'2010 R0.07e Separated out configuration options from ff.h to ffconf.h.
+ Nov 03, 2009 R0.07e Separated out configuration options from ff.h to ffconf.h.
Added a configuration option, _LFN_UNICODE.
Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
Fixed name matching error on the 13 char boundary.
Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
+
+ May 15, 2010, R0.08 Added a memory configuration option. (_USE_LFN)
+ 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.
/*----------------------------------------------------------------------------/
-/ FatFs - FAT file system module R0.07e (C)ChaN, 2010
+/ FatFs - FAT file system module R0.08 (C)ChaN, 2010
/-----------------------------------------------------------------------------/
/ 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 trems.
+/ developments under license policy of following terms.
/
/ Copyright (C) 2010, ChaN, all right reserved.
/
/
/ Jun 01,'06 R0.02 Added FAT12 support.
/ Removed unbuffered mode.
-/ Fixed a problem on small (<32M) patition.
+/ 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 algolithm to write files fast.
+/ 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 plysical drive.
+/ 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().
/ 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)
+/ 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.
/---------------------------------------------------------------------------*/
#include "ff.h" /* FatFs configurations and declarations */
#include "diskio.h" /* Declarations of low level disk I/O functions */
+
/*--------------------------------------------------------------------------
Module Private Definitions
---------------------------------------------------------------------------*/
-#if _FATFS != 0x007E
+#if _FATFS != 8085
#error Wrong include file (ff.h).
#endif
+
+/* FAT sub-type boundaries */
+/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
+#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
+#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
+
+
+/* Definitions corresponds to multiple sector size */
+#if _MAX_SS == 512 /* Single sector size */
+#define SS(fs) 512U
+#elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */
+#define SS(fs) ((fs)->ssize)
+#else
+#error Wrong 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.
#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
-#ifndef NULL
-#define NULL 0
+
+/* 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 /* Offset of name status byte */
#define NS_LOSS 0x01 /* Out of 8.3 format */
+/*------------------------------------------------------------*/
+/* Work area */
-/*--------------------------------------------------------------------------
-
- Private Work Area
-
----------------------------------------------------------------------------*/
-
-#if _DRIVES < 1 || _DRIVES > 9
-#error Number of drives must be 1-9.
+#if !_DRIVES
+#error Number of drives must not be 0.
#endif
static
-FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
-
-static
WORD Fsid; /* File system mount ID */
+static
+FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
#if _FS_RPATH
static
#endif
-#if _USE_LFN == 1 /* LFN with static LFN working buffer */
-static
-WCHAR LfnBuf[_MAX_LFN + 1];
-#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR *lp = LfnBuf
-#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp
+#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 dynamic LFN working buffer */
-#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR lbuf[_MAX_LFN + 1], *lp = lbuf
-#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp
+#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()
-#else /* No LFN */
-#define NAMEBUF(sp,lp) BYTE sp[12]
-#define INITBUF(dj,sp,lp) dj.fn = sp
+#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
/* Copy memory to memory */
static
void mem_cpy (void* dst, const void* src, int cnt) {
- char *d = (char*)dst;
- const char *s = (const char *)src;
- while (cnt--) *d++ = *s++;
+ 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, int cnt) {
- char *d = (char*)dst;
- while (cnt--) *d++ = (char)val;
+ BYTE *d = (BYTE*)dst;
+
+ while (cnt--)
+ *d++ = (BYTE)val;
}
/* Compare memory to memory */
static
int mem_cmp (const void* dst, const void* src, int cnt) {
- const char *d = (const char *)dst, *s = (const char *)src;
+ const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
int r = 0;
+
while (cnt-- && (r = *d++ - *s++) == 0) ;
return r;
}
#if _FS_REENTRANT
static
-BOOL lock_fs (
+int lock_fs (
FATFS *fs /* File system object */
)
{
/*-----------------------------------------------------------------------*/
+/* 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 (dj->fs->flsem[i].ctr) { /* Existing entry */
+ if (dj->fs->flsem[i].clu == dj->sclust && /* The file is found (identified with its location) */
+ dj->fs->flsem[i].idx == dj->index) break;
+ } else { /* Blank entry */
+ be++;
+ }
+ }
+ if (i == _FS_SHARE) /* The file has not been opened */
+ return (be || acc != 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
+
+ /* The file has been opened. Reject any open against writing file and all write mode open */
+ return (acc || dj->fs->flsem[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+}
+
+
+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 && fs->flsem[i].ctr; 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 (dj->fs->flsem[i].ctr &&
+ dj->fs->flsem[i].clu == dj->sclust &&
+ dj->fs->flsem[i].idx == dj->index) break;
+ }
+
+ if (i == _FS_SHARE) { /* Not opened. Register it as new. */
+ for (i = 0; i < _FS_SHARE && dj->fs->flsem[i].ctr; i++) ;
+ if (i == _FS_SHARE) return 0; /* No space to register (int err) */
+ dj->fs->flsem[i].clu = dj->sclust;
+ dj->fs->flsem[i].idx = dj->index;
+ }
+
+ if (acc && dj->fs->flsem[i].ctr) return 0; /* Access violation (int err) */
+
+ dj->fs->flsem[i].ctr = acc ? 0x100 : dj->fs->flsem[i].ctr + 1; /* Set semaphore value */
+
+ return i + 1;
+}
+
+
+static
+FRESULT dec_lock ( /* Decrement file open counter */
+ FATFS* fs, /* File system object */
+ UINT i /* Semaphore index */
+)
+{
+ WORD n;
+ FRESULT res;
+
+
+ if (--i < _FS_SHARE) {
+ n = fs->flsem[i].ctr;
+ if (n >= 0x100) n = 0;
+ if (n) n--;
+ fs->flsem[i].ctr = n;
+ res = FR_OK;
+ } else {
+ res = FR_INT_ERR;
+ }
+ return res;
+}
+
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
/* Change window offset */
/*-----------------------------------------------------------------------*/
static
FRESULT move_window (
FATFS *fs, /* File system object */
- DWORD sector /* Sector number to make apperance in the fs->win[] */
+ DWORD sector /* Sector number to make appearance in the fs->win[] */
) /* Move to zero only writes back dirty window */
{
DWORD wsect;
if (wsect != sector) { /* Changed current window */
#if !_FS_READONLY
if (fs->wflag) { /* Write back dirty window if needed */
- if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK)
+ if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
return FR_DISK_ERR;
fs->wflag = 0;
- if (wsect < (fs->fatbase + fs->sects_fat)) { /* In FAT area */
+ if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
BYTE nf;
- for (nf = fs->n_fats; nf > 1; nf--) { /* Refrect the change to all FAT copies */
- wsect += fs->sects_fat;
- disk_write(fs->drive, fs->win, wsect, 1);
+ 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->drive, fs->win, sector, 1) != RES_OK)
+ if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
return FR_DISK_ERR;
fs->winsect = sector;
}
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);
- disk_write(fs->drive, fs->win, fs->fsi_sector, 1);
+ 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->drive, CTRL_SYNC, (void*)NULL) != RES_OK)
+ if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
res = FR_DISK_ERR;
}
/*-----------------------------------------------------------------------*/
-DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Interal error, Else:Cluster status */
+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;
- DWORD fsect;
+ BYTE *p;
- if (clst < 2 || clst >= fs->max_clust) /* Range check */
+ if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
return 1;
- fsect = fs->fatbase;
switch (fs->fs_type) {
case FS_FAT12 :
- bc = clst; bc += bc / 2;
- if (move_window(fs, fsect + (bc / SS(fs)))) break;
- wc = fs->win[bc & (SS(fs) - 1)]; bc++;
- if (move_window(fs, fsect + (bc / SS(fs)))) break;
- wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;
+ 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, fsect + (clst / (SS(fs) / 2)))) break;
- return LD_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)]);
+ 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, fsect + (clst / (SS(fs) / 4)))) break;
- return LD_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;
+ 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 occured at the disk I/O layer */
+ return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
}
FRESULT put_fat (
FATFS *fs, /* File system object */
- DWORD clst, /* Cluster# to be changed in range of 2 to fs->max_clust - 1 */
+ 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;
- DWORD fsect;
FRESULT res;
- if (clst < 2 || clst >= fs->max_clust) { /* Range check */
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
res = FR_INT_ERR;
} else {
- fsect = fs->fatbase;
switch (fs->fs_type) {
case FS_FAT12 :
bc = clst; bc += bc / 2;
- res = move_window(fs, fsect + (bc / SS(fs)));
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
if (res != FR_OK) break;
- p = &fs->win[bc & (SS(fs) - 1)];
+ p = &fs->win[bc % SS(fs)];
*p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
bc++;
fs->wflag = 1;
- res = move_window(fs, fsect + (bc / SS(fs)));
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
if (res != FR_OK) break;
- p = &fs->win[bc & (SS(fs) - 1)];
+ 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, fsect + (clst / (SS(fs) / 2)));
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
if (res != FR_OK) break;
- ST_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)], (WORD)val);
+ p = &fs->win[clst * 2 % SS(fs)];
+ ST_WORD(p, (WORD)val);
break;
case FS_FAT32 :
- res = move_window(fs, fsect + (clst / (SS(fs) / 4)));
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
if (res != FR_OK) break;
- ST_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)], val);
+ p = &fs->win[clst * 4 % SS(fs)];
+ val |= LD_DWORD(p) & 0xF0000000;
+ ST_DWORD(p, val);
break;
default :
DWORD nxt;
- if (clst < 2 || clst >= fs->max_clust) { /* Check the range of cluster# */
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
res = FR_INT_ERR;
} else {
res = FR_OK;
- while (clst < fs->max_clust) { /* Not a last link? */
+ 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? */
DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
)
{
- DWORD cs, ncl, scl, mcl;
+ DWORD cs, ncl, scl;
- mcl = fs->max_clust;
- if (clst == 0) { /* Create new chain */
+ if (clst == 0) { /* Create a new chain */
scl = fs->last_clust; /* Get suggested start point */
- if (scl == 0 || scl >= mcl) scl = 1;
+ if (!scl || scl >= fs->n_fatent) scl = 1;
}
- else { /* Stretch existing chain */
+ 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 < mcl) return cs; /* It is already followed by next 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 >= mcl) { /* Wrap around */
+ if (ncl >= fs->n_fatent) { /* Wrap around */
ncl = 2;
- if (ncl > scl) return 0; /* No free custer */
+ 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 occured */
+ if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
return cs;
- if (ncl == scl) return 0; /* No free custer */
+ if (ncl == scl) return 0; /* No free cluster */
}
- if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "in use" */
+ if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "last link" */
return 0xFFFFFFFF;
if (clst != 0) { /* Link it to the previous one if needed */
if (put_fat(fs, clst, ncl))
)
{
clst -= 2;
- if (clst >= (fs->max_clust - 2)) return 0; /* Invalid cluster# */
+ if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
return clst * fs->csize + fs->database;
}
/*-----------------------------------------------------------------------*/
-/* Directory handling - Seek directory index */
+/* Directory handling - Set directory index */
/*-----------------------------------------------------------------------*/
static
-FRESULT dir_seek (
+FRESULT dir_sdi (
DIR *dj, /* Pointer to directory object */
WORD idx /* Directory index number */
)
dj->index = idx;
clst = dj->sclust;
- if (clst == 1 || clst >= dj->fs->max_clust) /* Check start cluster range */
+ 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;
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->max_clust) /* Reached to end of table or int error */
+ if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
return FR_INT_ERR;
idx -= ic;
}
/*-----------------------------------------------------------------------*/
static
-FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not streach */
+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 */
- BOOL streach /* FALSE: Do not streach table, TRUE: Streach table if needed */
+ int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
)
{
DWORD clst;
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->max_clust) { /* When it reached end of dynamic table */
+ if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
#if !_FS_READONLY
BYTE c;
- if (!streach) return FR_NO_FILE; /* When do not streach, report EOT */
- clst = create_chain(dj->fs, dj->clust); /* Streach cluster chain */
+ 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 streached table */
+ /* 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 */
static
-BOOL cmp_lfn ( /* TRUE:Matched, FALSE:Not matched */
+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 */
)
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 FALSE; /* Not matched */
+ return 0; /* Not matched */
} else {
- if (uc != 0xFFFF) return FALSE; /* Check filler */
+ if (uc != 0xFFFF) return 0; /* Check filler */
}
} while (++s < 13); /* Repeat until all chars in the entry are checked */
if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */
- return FALSE;
+ return 0;
- return TRUE; /* The part of LFN matched */
+ return 1; /* The part of LFN matched */
}
static
-BOOL pick_lfn ( /* TRUE:Succeeded, FALSE:Buffer overflow */
+int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
BYTE *dir /* Pointer to the directory entry */
)
s = 0; wc = 1;
do {
- uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ 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 FALSE; /* Buffer overflow? */
- lfnbuf[i++] = wc = uc; /* Store it */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i++] = wc = uc; /* Store it */
} else {
- if (uc != 0xFFFF) return FALSE; /* Check filler */
+ if (uc != 0xFFFF) return 0; /* Check filler */
}
} while (++s < 13); /* Read all character in the entry */
if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */
- if (i >= _MAX_LFN) return FALSE; /* Buffer overflow? */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
lfnbuf[i] = 0;
}
- return TRUE;
+ return 1;
}
/*-----------------------------------------------------------------------*/
#if _USE_LFN
void gen_numname (
- BYTE *dst, /* Pointer to genartated SFN */
+ BYTE *dst, /* Pointer to generated SFN */
const BYTE *src, /* Pointer to source SFN to be modified */
const WCHAR *lfn, /* Pointer to LFN */
- WORD num /* Sequense number */
+ WORD seq /* Sequence number */
)
{
- char ns[8];
+ BYTE ns[8], c;
int i, j;
mem_cpy(dst, src, 11);
- if (num > 5) { /* On many collisions, generate a hash number instead of sequencial number */
- do num = (num >> 1) + (num << 15) + (WORD)*lfn++; while (*lfn);
+ 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 */
i = 7;
do {
- ns[i--] = (num % 10) + '0';
- num /= 10;
- } while (num);
+ c = (seq % 16) + '0';
+ if (c > '9') c += 7;
+ ns[i--] = c;
+ seq /= 16;
+ } while (seq);
ns[i] = '~';
/* Append the number */
BYTE a, ord, sum;
#endif
- res = dir_seek(dj, 0); /* Rewind directory object */
+ res = dir_sdi(dj, 0); /* Rewind directory object */
if (res != FR_OK) return res;
#if _USE_LFN
if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
break;
#endif
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
} while (res == FR_OK);
return res;
if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
break;
#endif
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
if (res != FR_OK) break;
}
if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */
if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
- fn[NS] = 0; dj->lfn = NULL; /* Find only SFN */
+ 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 */
fn[NS] = sn[NS]; dj->lfn = lfn;
}
- if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve reserve an SFN + LFN entries. */
+ 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. */
}
/* Reserve contiguous entries */
- res = dir_seek(dj, 0);
+ res = dir_sdi(dj, 0);
if (res != FR_OK) return res;
n = is = 0;
do {
if (res != FR_OK) break;
c = *dj->dir; /* Check the entry status */
if (c == 0xE5 || c == 0) { /* Is it a blank entry? */
- if (n == 0) is = dj->index; /* First index of the contigulus entry */
- if (++n == ne) break; /* A contiguous entry that requiered count is found */
+ 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, TRUE); /* Next entry with table streach */
+ 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_seek(dj, is);
+ res = dir_sdi(dj, is);
if (res == FR_OK) {
sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
ne--;
if (res != FR_OK) break;
fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
dj->fs->wflag = 1;
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
} while (res == FR_OK && --ne);
}
}
#else /* Non LFN configuration */
- res = dir_seek(dj, 0);
+ 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 == 0xE5 || c == 0) break; /* Is it a blank entry? */
- res = dir_next(dj, TRUE); /* Next entry with table streach */
+ res = dir_next(dj, 1); /* Next entry with table stretch */
} while (res == FR_OK);
}
#endif
dir = dj->dir;
mem_set(dir, 0, 32); /* 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;
}
}
WORD i;
i = dj->index; /* SFN index */
- res = dir_seek(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
+ 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);
*dj->dir = 0xE5; /* 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, FALSE); /* Next entry */
+ 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_seek(dj, dj->index);
+ res = dir_sdi(dj, dj->index);
if (res == FR_OK) {
res = move_window(dj->fs, dj->sect);
if (res == FR_OK) {
static
FRESULT create_name (
DIR *dj, /* Pointer to the directory object */
- const XCHAR **path /* Pointer to pointer to the segment in the path string */
+ const TCHAR **path /* Pointer to pointer to the segment in the path string */
)
{
#ifdef _EXCVT
- static const BYTE cvt[] = _EXCVT;
+ static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
#endif
#if _USE_LFN /* LFN configuration */
BYTE b, cf;
WCHAR w, *lfn;
int i, ni, si, di;
- const XCHAR *p;
+ const TCHAR *p;
/* Create LFN in Unicode */
si = di = 0;
return FR_INVALID_NAME;
lfn[di++] = w; /* Store the Unicode char */
}
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *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? */
if (w != ' ' && w != '.') break;
di--;
}
- if (!di) return FR_INVALID_NAME; /* Reject null string */
+ if (!di) return FR_INVALID_NAME; /* Reject nul string */
lfn[di] = 0; /* LFN is created */
b = i = 0; ni = 8;
for (;;) {
w = lfn[si++]; /* Get an LFN char */
- if (!w) break; /* Break on enf of the LFN */
+ 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 (w >= 0x80) { /* Non ASCII char */
#ifdef _EXCVT
w = ff_convert(w, 0); /* Unicode -> OEM code */
- if (w) w = cvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
+ 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
}
dj->fn[i++] = (BYTE)(w >> 8);
} else { /* Single byte char */
- if (!w || chk_chr("+,;[=]", w)) { /* Replace illegal chars for SFN */
+ 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 */
#if _FS_RPATH
if (p[si] == '.') { /* Is this a dot entry? */
for (;;) {
- c = p[si++];
+ c = (BYTE)p[si++];
if (c != '.' || si >= 3) break;
sfn[i++] = c;
}
if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *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 = p[si++];
+ 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;
}
if (c >= 0x80) { /* Extended char */
#ifdef _EXCVT
- c = cvt[c - 0x80]; /* Convert extend char (SBCS) */
+ c = excvt[c - 0x80]; /* Convert extend char (SBCS) */
#else
- b |= 3; /* Eliminate NT flag if ext char is exist */
+ b |= 3; /* Eliminate NT flag if extended char is exist */
#if !_DF1S /* ASCII only cfg */
return FR_INVALID_NAME;
#endif
#endif
}
if (IsDBCS1(c)) { /* DBC 1st byte? */
- d = p[si++]; /* Get 2nd byte */
+ d = (BYTE)p[si++]; /* Get 2nd byte */
if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
return FR_INVALID_NAME;
sfn[i++] = c;
sfn[i++] = d;
} else { /* Single byte code */
- if (chk_chr(" \"*+,[=]|\x7F", c)) /* Reject illegal chrs for SFN */
+ if (chk_chr("\"*+,:<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
return FR_INVALID_NAME;
if (IsUpper(c)) { /* ASCII large capital? */
b |= 2;
sfn[i++] = c;
}
}
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *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 null string */
+ if (!i) return FR_INVALID_NAME; /* Reject nul string */
if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */
if (ni == 8) b <<= 2;
- if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Extension has only small capital) */
- if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Filename has only small capital) */
+ 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 */
)
{
int i;
- BYTE c, nt, *dir;
- char *p;
+ BYTE nt, *dir;
+ TCHAR *p, c;
p = fno->fname;
for (i = 0; i < 8; i++) { /* Copy name body */
c = dir[i];
if (c == ' ') break;
- if (c == 0x05) c = 0xE5;
+ if (c == 0x05) c = (TCHAR)0xE5;
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 */
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;
}
}
#if _USE_LFN
if (fno->lfname) {
- XCHAR *tp = fno->lfname;
+ TCHAR *tp = fno->lfname;
WCHAR w, *lfn;
i = 0;
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 */
- tp[i++] = (XCHAR)(w >> 8);
+ tp[i++] = (TCHAR)(w >> 8);
#endif
if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */
- tp[i++] = (XCHAR)w;
+ tp[i++] = (TCHAR)w;
}
}
tp[i] = 0; /* Terminator */
static
FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
DIR *dj, /* Directory object to return last directory and found object */
- const XCHAR *path /* Full-path string to find a file or directory */
+ const TCHAR *path /* Full-path string to find a file or directory */
)
{
FRESULT res;
- BYTE *dir, last;
+ BYTE *dir, ns;
- while (!_USE_LFN && *path == ' ') path++; /* Skip leading spaces */
#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 saparator */
+ } else { /* No heading separator */
dj->sclust = dj->fs->cdir; /* Start from the current dir */
}
#else
dj->sclust = 0; /* Start from the root dir */
#endif
- if ((UINT)*path < ' ') { /* Null path means the start directory itself */
- res = dir_seek(dj, 0);
- dj->dir = NULL;
+ 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 */
- last = *(dj->fn+NS) & NS_LAST;
- if (res != FR_OK) { /* Could not find the object */
- if (res == FR_NO_FILE && !last)
- res = FR_NO_PATH;
+ 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 (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 */
+ 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 = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
/*-----------------------------------------------------------------------*/
static
-BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */
+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->drive, fs->win, sect, 1) != RES_OK) /* Load boot record */
+ 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;
/* Make sure that the file system is valid */
/*-----------------------------------------------------------------------*/
-
-FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occured */
- const XCHAR **path, /* Pointer to pointer to the path name (drive number) */
+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, *tbl;
+ BYTE fmt, b, *tbl;
UINT vol;
DSTATUS stat;
- DWORD bsect, fsize, tsect, mclst;
- const XCHAR *p = *path;
+ DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
+ WORD nrsv;
+ const TCHAR *p = *path;
FATFS *fs;
/* Get logical drive number from the path name */
/* Check if the logical drive is valid or not */
if (vol >= _DRIVES) /* Is the drive number valid? */
return FR_INVALID_DRIVE;
- *rfs = fs = FatFs[vol]; /* Returen pointer to the corresponding file system object */
+ *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->drive);
+ 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 */
}
}
- /* The logical drive must be mounted. Following code attempts to mount the volume */
+ /* The logical drive must be mounted. Following code attempts to mount the volume (initialize the file system object) */
fs->fs_type = 0; /* Clear the file system object */
- fs->drive = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
- stat = disk_initialize(fs->drive); /* Initialize low level disk I/O layer */
+ fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
+ stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
if (stat & STA_NOINIT) /* Check if the drive is ready */
return FR_NOT_READY;
#if _MAX_SS != 512 /* Get disk sector size if needed */
- if (disk_ioctl(fs->drive, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
return FR_NO_FILESYSTEM;
#endif
#if !_FS_READONLY
if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
return FR_WRITE_PROTECTED;
#endif
- /* Search FAT partition on the drive */
- fmt = check_fs(fs, bsect = 0); /* Check sector 0 as an SFD format */
- if (fmt == 1) { /* Not an FAT boot record, it may be patitioned */
- /* Check a partition listed in top of the partition table */
+ /* 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) * 16]; /* Partition table */
if (tbl[4]) { /* Is the partition existing? */
bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
}
}
if (fmt == 3) return FR_DISK_ERR;
- if (fmt || LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* No valid FAT patition is found */
+ 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;
- /* Initialize the file system object */
- fsize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
- if (!fsize) fsize = LD_DWORD(fs->win+BPB_FATSz32);
- fs->sects_fat = fsize;
- fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
- fsize *= fs->n_fats; /* (Number of sectors in FAT area) */
- fs->fatbase = bsect + LD_WORD(fs->win+BPB_RsvdSecCnt); /* FAT start sector (lba) */
- fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
- fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Nmuber of root directory entries */
+ 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 1,2,4...128) */
+
+ fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
+ if (fs->n_rootdir % (SS(fs) / 32)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
+
tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
- fs->max_clust = mclst = (tsect /* Last cluster# + 1 (Number of clusters + 2) */
- - LD_WORD(fs->win+BPB_RsvdSecCnt) - fsize - fs->n_rootdir / (SS(fs)/32)
- ) / fs->csize + 2;
- fmt = FS_FAT12; /* Determine the FAT sub type */
- if (mclst >= 0xFF7) fmt = FS_FAT16; /* Number of clusters >= 0xFF5 */
- if (mclst >= 0xFFF7) fmt = FS_FAT32; /* Number of clusters >= 0xFFF5 */
+ 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) / 32); /* 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;
- if (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 */
- else
- fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */
- fs->database = fs->fatbase + fsize + fs->n_rootdir / (SS(fs)/32); /* Data start sector (lba) */
+ 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)) /* (FAT size must not be less than FAT sectors */
+ return FR_NO_FILESYSTEM;
#if !_FS_READONLY
- /* Initialize allocation information */
+ /* Initialize cluster allocation information */
fs->free_clust = 0xFFFFFFFF;
- fs->wflag = 0;
- /* Get fsinfo if needed */
+ 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->drive, fs->win, fs->fsi_sector, 1) == RES_OK &&
+ 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);
+ 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
- fs->id = ++Fsid; /* File system mount ID */
+#if _FS_SHARE /* Clear file lock semaphores */
+ for (vol = 0; vol < _FS_SHARE; vol++)
+ fs->flsem[vol].ctr = 0;
+#endif
return FR_OK;
}
ENTER_FF(fs); /* Lock file system */
- if (disk_status(fs->drive) & STA_NOINIT)
+ if (disk_status(fs->drv) & STA_NOINIT)
return FR_NOT_READY;
return FR_OK;
/*-----------------------------------------------------------------------*/
-/* Mount/Unmount a Locical Drive */
+/* Mount/Unmount a Logical Drive */
/*-----------------------------------------------------------------------*/
FRESULT f_mount (
FRESULT f_open (
FIL *fp, /* Pointer to the blank file object */
- const XCHAR *path, /* Pointer to the file name */
+ const TCHAR *path, /* Pointer to the file name */
BYTE mode /* Access mode and file open mode flags */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
- fp->fs = NULL; /* Clear file object */
+ 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_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)));
+ 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
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
+ INIT_BUF(dj);
+ if (res == FR_OK)
+ res = follow_path(&dj, path); /* Follow the file path */
+ dir = dj.dir;
-#if !_FS_READONLY
+#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 ps, cl;
+ 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 (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);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
+#endif
mode |= FA_CREATE_ALWAYS;
- dir = dj.dir; /* Created entry (SFN entry) */
+ dir = dj.dir; /* New entry */
}
- else { /* Any object is already existing */
- if (mode & FA_CREATE_NEW) /* Cannot create new */
- LEAVE_FF(dj.fs, FR_EXIST);
- dir = dj.dir;
- if (!dir || (dir[DIR_Attr] & (AM_RDO | AM_DIR))) /* Cannot overwrite it (R/O or DIR) */
- LEAVE_FF(dj.fs, FR_DENIED);
- if (mode & FA_CREATE_ALWAYS) { /* Resize it to zero on over write mode */
- cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
- ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
- ST_WORD(dir+DIR_FstClusLO, 0);
- ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
- dj.fs->wflag = 1;
- ps = dj.fs->winsect; /* Remove the cluster chain */
- if (cl) {
- res = remove_chain(dj.fs, cl);
- if (res) LEAVE_FF(dj.fs, res);
- dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
- }
- res = move_window(dj.fs, ps);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
+ else { /* Any object is already existing */
+ if (mode & FA_CREATE_NEW) { /* Cannot create new */
+ res = FR_EXIST;
+ } else {
+ if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) /* Cannot overwrite it (R/O or DIR) */
+ res = FR_DENIED;
}
}
- if (mode & FA_CREATE_ALWAYS) {
+ 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 */
- ps = get_fattime();
- ST_DWORD(dir+DIR_CrtTime, ps); /* Created time */
+ ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
+ cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
+ ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
+ ST_WORD(dir+DIR_FstClusLO, 0);
dj.fs->wflag = 1;
- mode |= FA__WRITTEN; /* Set file changed flag */
+ 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);
+ }
+ }
}
}
- /* Open an existing file */
- else {
-#endif /* !_FS_READONLY */
- if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
- dir = dj.dir;
- if (!dir || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */
- LEAVE_FF(dj.fs, FR_NO_FILE);
-#if !_FS_READONLY
- if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
- LEAVE_FF(dj.fs, FR_DENIED);
+ else { /* Open an existing file */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
+ res = FR_NO_FILE;
+ } else {
+ if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+ res = FR_DENIED;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ if (mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW))
+ mode |= FA__WRITTEN; /* Set file changed flag */
+ fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
+ fp->dir_ptr = dir;
+#if _FS_SHARE
+ fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (!fp->lockid) res = FR_INT_ERR;
+#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;
+ }
}
- fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
- fp->dir_ptr = dj.dir;
#endif
- fp->flag = mode; /* File access mode */
- fp->org_clust = /* File start cluster */
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
- fp->fptr = 0; fp->csect = 255; /* File pointer */
- fp->dsect = 0;
- fp->fs = dj.fs; fp->id = dj.fs->id; /* Owner file system object of the file */
+ FREE_BUF();
+
+ if (res == FR_OK) {
+ fp->flag = mode; /* File access mode */
+ fp->org_clust = /* File start cluster */
+ ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
+ fp->fptr = 0; /* File pointer */
+ fp->dsect = 0;
+#if _USE_FASTSEEK
+ fp->cltbl = 0; /* No cluster link map table */
+#endif
+ fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
+ }
- LEAVE_FF(dj.fs, FR_OK);
+ LEAVE_FF(dj.fs, res);
}
FRESULT res;
DWORD clst, sect, remain;
UINT rcnt, cc;
- BYTE *rbuff = buff;
+ BYTE csect, *rbuff = buff;
- *br = 0; /* Initialize bytes read */
+ *br = 0; /* Initialize byte counter */
res = validate(fp->fs, fp->id); /* Check validity of the object */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
for ( ; btr; /* Repeat until all data transferred */
rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
clst = (fp->fptr == 0) ? /* On the top of the file? */
fp->org_clust : get_fat(fp->fs, fp->curr_clust);
if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector offset in the cluster */
}
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect;
+ sect += csect;
cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
if (cc) { /* Read maximum contiguous sectors directly */
- if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
- cc = fp->fs->csize - fp->csect;
- if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)
+ 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
+#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) /* Replace one of the read sectors with cached data if it contains a dirty sector */
+ 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) /* Replace one of the read sectors with cached data if it contains a dirty sector */
+ 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
- fp->csect += (BYTE)cc; /* Next sector address in the cluster */
rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
continue;
}
#if !_FS_TINY
#if !_FS_READONLY
if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
#endif
if (fp->dsect != sect) { /* Fill sector buffer with file data */
- if (disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+ if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
}
#endif
fp->dsect = sect;
- fp->csect++; /* Next sector address in the cluster */
}
rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
if (rcnt > btr) rcnt = btr;
DWORD clst, sect;
UINT wcnt, cc;
const BYTE *wbuff = buff;
+ BYTE csect;
- *bw = 0; /* Initialize bytes written */
+ *bw = 0; /* Initialize byte counter */
res = validate(fp->fs, fp->id); /* Check validity of the object */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
for ( ; btw; /* Repeat until all data transferred */
wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
if (fp->fptr == 0) { /* On the top of the file? */
clst = fp->org_clust; /* Follow from the origin */
if (clst == 0) /* When there is no cluster chain, */
fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
} else { /* Middle or end of the file */
- clst = create_chain(fp->fs, fp->curr_clust); /* Follow or streach cluster chain */
+ clst = create_chain(fp->fs, fp->curr_clust); /* Follow or stretch cluster chain */
}
if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector address in the cluster */
}
#if _FS_TINY
if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */
ABORT(fp->fs, FR_DISK_ERR);
#else
if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
#endif
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect;
+ sect += csect;
cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
if (cc) { /* Write maximum contiguous sectors directly */
- if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
- cc = fp->fs->csize - fp->csect;
- if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
#if _FS_TINY
if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
fp->flag &= ~FA__DIRTY;
}
#endif
- fp->csect += (BYTE)cc; /* Next sector address in the cluster */
wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
continue;
}
#else
if (fp->dsect != sect) { /* Fill sector buffer with file data */
if (fp->fptr < fp->fsize &&
- disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+ disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
}
#endif
fp->dsect = sect;
- fp->csect++; /* Next sector address in the cluster */
}
wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
if (wcnt > btw) wcnt = btw;
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->drive, fp->buf, fp->dsect, 1) != RES_OK)
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
LEAVE_FF(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */
ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
- tim = get_fattime(); /* Updated time */
+ tim = get_fattime(); /* Update updated time */
ST_DWORD(dir+DIR_WrtTime, tim);
fp->flag &= ~FA__WRITTEN;
fp->fs->wflag = 1;
{
FRESULT res;
-
#if _FS_READONLY
- res = validate(fp->fs, fp->id);
- if (res == FR_OK) fp->fs = NULL;
- LEAVE_FF(fp->fs, res);
+ 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->fs, fp->lockid);
+ unlock_fs(fp->fs, FR_OK);
+ }
#else
- res = f_sync(fp);
- if (res == FR_OK) fp->fs = NULL;
+ res = dec_lock(fp->fs, fp->lockid);
+#endif
+ }
+#endif
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
return res;
#endif
}
FRESULT f_chdir (
- const XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 0);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the path */
+ FREE_BUF();
if (res == FR_OK) { /* Follow completed */
dir = dj.dir; /* Pointer to the entry */
if (!dir) {
- dj.fs->cdir = 0; /* No entry (root dir) */
+ dj.fs->cdir = dj.sclust; /* Start directory itself */
} else {
- if (dir[DIR_Attr] & AM_DIR) /* Reached to the dir */
+ if (dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
else
- res = FR_NO_PATH; /* Could not reach the dir (it is a file) */
+ res = FR_NO_PATH; /* Reached but a file */
}
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
)
{
FRESULT res;
- DWORD clst, bcs, nsect, ifptr;
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 (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; fp->csect = 255;
- if (ofs > 0) {
- 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->curr_clust;
- } else { /* When seek to back cluster, */
- clst = fp->org_clust; /* start from the first cluster */
-#if !_FS_READONLY
- if (clst == 0) { /* If no cluster chain, create a new chain */
- clst = create_chain(fp->fs, 0);
- if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->org_clust = clst;
+
+#if _USE_FASTSEEK
+ if (fp->cltbl) { /* Fast seek */
+ DWORD cl, pcl, ncl, tcl, dsc, tlen, *tbl = fp->cltbl;
+ BYTE csc;
+
+ tlen = *tbl++;
+ if (ofs == CREATE_LINKMAP) { /* Create link map table */
+ cl = fp->org_clust;
+ if (cl) {
+ do {
+ if (tlen < 4) { /* Not enough table items */
+ res = FR_NOT_ENOUGH_CORE; break;
+ }
+ tcl = cl; ncl = 0;
+ do { /* Get a fragment and store the top and length */
+ pcl = cl; ncl++;
+ cl = get_fat(fp->fs, cl);
+ if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ } while (cl == pcl + 1);
+ *tbl++ = ncl; *tbl++ = tcl;
+ tlen -= 2;
+ } while (cl < fp->fs->n_fatent);
}
+ *tbl = 0; /* Terminate table */
+
+ } else { /* Fast seek */
+ if (ofs > fp->fsize) /* Clip offset at the file size */
+ ofs = fp->fsize;
+ fp->fptr = ofs; /* Set file pointer */
+ if (ofs) {
+ dsc = (ofs - 1) / SS(fp->fs);
+ cl = dsc / fp->fs->csize;
+ for (;;) {
+ ncl = *tbl++;
+ if (!ncl) ABORT(fp->fs, FR_INT_ERR);
+ if (cl < ncl) break;
+ cl -= ncl; tbl++;
+ }
+ fp->curr_clust = cl + *tbl;
+ csc = (BYTE)(dsc & (fp->fs->csize - 1));
+ dsc = clust2sect(fp->fs, fp->curr_clust);
+ if (!dsc) ABORT(fp->fs, FR_INT_ERR);
+ dsc += csc;
+ if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) {
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
#endif
- fp->curr_clust = clst;
+ fp->dsect = dsc;
+ }
+ }
}
- if (clst != 0) {
- while (ofs > bcs) { /* Cluster following loop */
+ } 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
- if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
- clst = create_chain(fp->fs, clst); /* Force streached if in write mode */
- if (clst == 0) { /* When disk gets full, clip file size */
- ofs = bcs; break;
- }
- } else
+ && !(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->curr_clust;
+ } else { /* When seek to back cluster, */
+ clst = fp->org_clust; /* start from the first cluster */
+#if !_FS_READONLY
+ if (clst == 0) { /* If no cluster chain, create a new chain */
+ clst = create_chain(fp->fs, 0);
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->org_clust = clst;
+ }
#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->max_clust) ABORT(fp->fs, FR_INT_ERR);
fp->curr_clust = clst;
- fp->fptr += bcs;
- ofs -= bcs;
}
- fp->fptr += ofs;
- fp->csect = (BYTE)(ofs / SS(fp->fs)); /* Sector offset in the cluster */
- if (ofs % SS(fp->fs)) {
- nsect = clust2sect(fp->fs, clst); /* Current sector */
- if (!nsect) ABORT(fp->fs, FR_INT_ERR);
- nsect += fp->csect;
- fp->csect++;
+ 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->curr_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) {
+ if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
#if !_FS_TINY
#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Write-back dirty buffer if needed */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
+ if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
#endif
- if (disk_read(fp->fs->drive, fp->buf, nsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
+ if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
#endif
- fp->dsect = nsect;
- }
+ fp->dsect = nsect;
+ }
#if !_FS_READONLY
- if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */
- fp->fsize = fp->fptr;
- fp->flag |= FA__WRITTEN;
- }
+ if (fp->fptr > fp->fsize) { /* Set changed 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 XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj->fs, 0);
if (res == FR_OK) {
- INITBUF((*dj), sfn, lfn);
+ INIT_BUF(*dj);
res = follow_path(dj, path); /* Follow the path to the directory */
+ FREE_BUF();
if (res == FR_OK) { /* Follow completed */
dir = dj->dir;
- if (dir) { /* It is not the root dir */
+ if (dir) { /* It is not the current dir */
if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
} else { /* The object is not a directory */
}
if (res == FR_OK) {
dj->id = dj->fs->id;
- res = dir_seek(dj, 0); /* Rewind dir */
+ res = dir_sdi(dj, 0); /* Rewind dir */
}
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
)
{
FRESULT res;
- NAMEBUF(sfn, lfn);
+ DEF_NAMEBUF;
res = validate(dj->fs, dj->id); /* Check validity of the object */
if (res == FR_OK) {
- INITBUF((*dj), sfn, lfn);
if (!fno) {
- res = dir_seek(dj, 0);
+ res = dir_sdi(dj, 0);
} else {
+ INIT_BUF(*dj);
res = dir_read(dj);
if (res == FR_NO_FILE) {
dj->sect = 0;
}
if (res == FR_OK) { /* A valid entry is found */
get_fileinfo(dj, fno); /* Get the object information */
- res = dir_next(dj, FALSE); /* Increment index for next */
+ res = dir_next(dj, 0); /* Increment index for next */
if (res == FR_NO_FILE) {
dj->sect = 0;
res = FR_OK;
}
}
+ FREE_BUF();
}
}
/*-----------------------------------------------------------------------*/
FRESULT f_stat (
- const XCHAR *path, /* Pointer to the file path */
+ const TCHAR *path, /* Pointer to the file path */
FILINFO *fno /* Pointer to file information to return */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 0);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ INIT_BUF(dj);
res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) { /* Follwo completed */
- if (dj.dir) /* Found an object */
+ if (res == FR_OK) { /* Follow completed */
+ if (dj.dir) /* Found an object */
get_fileinfo(&dj, fno);
- else /* It is root dir */
+ else /* It is root dir */
res = FR_INVALID_NAME;
}
+ FREE_BUF();
}
LEAVE_FF(dj.fs, res);
/*-----------------------------------------------------------------------*/
FRESULT f_getfree (
- const XCHAR *path, /* Pointer to the logical drive number (root dir) */
+ 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 */
)
/* Get drive number */
res = chk_mounted(&path, fatfs, 0);
- if (res != FR_OK) LEAVE_FF(*fatfs, res);
-
- /* If number of free cluster is valid, return it without cluster scan. */
- if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {
- *nclst = (*fatfs)->free_clust;
- LEAVE_FF(*fatfs, FR_OK);
- }
-
- /* 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) LEAVE_FF(*fatfs, FR_DISK_ERR);
- if (stat == 1) LEAVE_FF(*fatfs, FR_INT_ERR);
- if (stat == 0) n++;
- } while (++clst < (*fatfs)->max_clust);
- } else {
- clst = (*fatfs)->max_clust;
- sect = (*fatfs)->fatbase;
- i = 0; p = 0;
- do {
- if (!i) {
- res = move_window(*fatfs, sect++);
- if (res != FR_OK)
- LEAVE_FF(*fatfs, res);
- p = (*fatfs)->win;
- i = SS(*fatfs);
- }
- if (fat == FS_FAT16) {
- if (LD_WORD(p) == 0) n++;
- p += 2; i -= 2;
+ 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 {
- if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
- p += 4; i -= 4;
+ 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);
}
- } while (--clst);
+ (*fatfs)->free_clust = n;
+ if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+ *nclst = n;
+ }
}
- (*fatfs)->free_clust = n;
- if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
- *nclst = n;
-
- LEAVE_FF(*fatfs, FR_OK);
+ LEAVE_FF(*fatfs, 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 (!(fp->flag & FA_WRITE)) /* Check access mode */
- LEAVE_FF(fp->fs, FR_DENIED);
-
- 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->org_clust);
- fp->org_clust = 0;
- } else { /* When truncate a part of the file, remove remaining clusters */
- ncl = get_fat(fp->fs, fp->curr_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->max_clust) {
- res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
- if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ 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->org_clust);
+ fp->org_clust = 0;
+ } else { /* When truncate a part of the file, remove remaining clusters */
+ ncl = get_fat(fp->fs, fp->curr_clust);
+ res = FR_OK;
+ if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (ncl == 1) res = FR_INT_ERR;
+ if (res == FR_OK && ncl < fp->fs->n_fatent) {
+ res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
+ if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ }
}
}
+ if (res != FR_OK) fp->flag |= FA__ERROR;
}
- if (res != FR_OK) fp->flag |= FA__ERROR;
LEAVE_FF(fp->fs, res);
}
/*-----------------------------------------------------------------------*/
FRESULT f_unlink (
- const XCHAR *path /* Pointer to the file or directory path */
+ const TCHAR *path /* Pointer to the file or directory path */
)
{
FRESULT res;
DIR dj, sdj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
DWORD dclst;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
-
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
-
- dir = dj.dir;
- if (!dir) /* Is it the root directory? */
- LEAVE_FF(dj.fs, FR_INVALID_NAME);
- if (dir[DIR_Attr] & AM_RDO) /* Is it a R/O object? */
- LEAVE_FF(dj.fs, FR_DENIED);
- dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
-
- if (dir[DIR_Attr] & AM_DIR) { /* It is a sub-directory */
- if (dclst < 2) LEAVE_FF(dj.fs, FR_INT_ERR);
- mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */
- sdj.sclust = dclst;
- res = dir_seek(&sdj, 2);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- res = dir_read(&sdj);
- if (res == FR_OK) res = FR_DENIED; /* Not empty sub-dir */
- if (res != FR_NO_FILE) LEAVE_FF(dj.fs, res);
- }
-
- res = dir_remove(&dj); /* Remove directory entry */
if (res == FR_OK) {
- if (dclst)
- res = remove_chain(dj.fs, dclst); /* Remove the cluster chain */
- if (res == FR_OK) res = sync(dj.fs);
+ 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 = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ 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);
}
/*-----------------------------------------------------------------------*/
FRESULT f_mkdir (
- const XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir, n;
- DWORD dsect, dclst, pclst, tim;
+ DWORD dsc, dcl, pcl, tim = get_fattime();
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
-
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) res = FR_EXIST; /* Any file or directory is already existing */
- if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res != FR_NO_FILE) /* Any error occured */
- LEAVE_FF(dj.fs, res);
-
- dclst = create_chain(dj.fs, 0); /* Allocate a new cluster for new directory table */
- res = FR_OK;
- if (dclst == 0) res = FR_DENIED;
- if (dclst == 1) res = FR_INT_ERR;
- if (dclst == 0xFFFFFFFF) res = FR_DISK_ERR;
- if (res == FR_OK)
- res = move_window(dj.fs, 0);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- dsect = clust2sect(dj.fs, dclst);
-
- dir = dj.fs->win; /* Initialize the new directory table */
- mem_set(dir, 0, SS(dj.fs));
- mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
- dir[DIR_Name] = '.';
- dir[DIR_Attr] = AM_DIR;
- tim = get_fattime();
- ST_DWORD(dir+DIR_WrtTime, tim);
- ST_WORD(dir+DIR_FstClusLO, dclst);
- ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
- mem_cpy(dir+32, dir, 32); /* Create ".." entry */
- dir[33] = '.';
- pclst = dj.sclust;
- if (dj.fs->fs_type == FS_FAT32 && pclst == dj.fs->dirbase)
- pclst = 0;
- ST_WORD(dir+32+DIR_FstClusLO, pclst);
- ST_WORD(dir+32+DIR_FstClusHI, pclst >> 16);
- for (n = 0; n < dj.fs->csize; n++) { /* Write dot entries and clear left sectors */
- dj.fs->winsect = dsect++;
- dj.fs->wflag = 1;
- res = move_window(dj.fs, 0);
- if (res) LEAVE_FF(dj.fs, res);
- mem_set(dir, 0, SS(dj.fs));
- }
-
- res = dir_register(&dj);
- if (res != FR_OK) {
- remove_chain(dj.fs, dclst);
- } else {
- dir = dj.dir;
- dir[DIR_Attr] = AM_DIR; /* Attribute */
- ST_DWORD(dir+DIR_WrtTime, tim); /* Crated time */
- ST_WORD(dir+DIR_FstClusLO, dclst); /* Table start cluster */
- ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
- dj.fs->wflag = 1;
- res = sync(dj.fs);
+ 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_WORD(dir+DIR_FstClusLO, dcl);
+ ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ mem_cpy(dir+32, dir, 32); /* Create ".." entry */
+ dir[33] = '.'; pcl = dj.sclust;
+ if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
+ pcl = 0;
+ ST_WORD(dir+32+DIR_FstClusLO, pcl);
+ ST_WORD(dir+32+DIR_FstClusHI, pcl >> 16);
+ 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_WORD(dir+DIR_FstClusLO, dcl); /* Table start cluster */
+ ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ FREE_BUF();
}
LEAVE_FF(dj.fs, res);
/*-----------------------------------------------------------------------*/
-/* Change File Attribute */
+/* Change Attribute */
/*-----------------------------------------------------------------------*/
FRESULT f_chmod (
- const XCHAR *path, /* Pointer to the file path */
+ const TCHAR *path, /* Pointer to the file path */
BYTE value, /* Attribute bits */
BYTE mask /* Attribute mask to change */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ 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) {
/*-----------------------------------------------------------------------*/
FRESULT f_utime (
- const XCHAR *path, /* Pointer to the file/directory name */
- const FILINFO *fno /* Pointer to the timestamp to be set */
+ const TCHAR *path, /* Pointer to the file/directory name */
+ const FILINFO *fno /* Pointer to the time stamp to be set */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ 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 */
+ if (!dir) { /* Root directory */
res = FR_INVALID_NAME;
- } else { /* File or sub-directory */
+ } else { /* File or sub-directory */
ST_WORD(dir+DIR_WrtTime, fno->ftime);
ST_WORD(dir+DIR_WrtDate, fno->fdate);
dj.fs->wflag = 1;
/*-----------------------------------------------------------------------*/
FRESULT f_rename (
- const XCHAR *path_old, /* Pointer to the old name */
- const XCHAR *path_new /* Pointer to the new name */
+ const TCHAR *path_old, /* Pointer to the old name */
+ const TCHAR *path_new /* Pointer to the new name */
)
{
FRESULT res;
- DIR dj_old, dj_new;
- NAMEBUF(sfn, lfn);
+ DIR djo, djn;
BYTE buf[21], *dir;
DWORD dw;
+ DEF_NAMEBUF;
- INITBUF(dj_old, sfn, lfn);
- res = chk_mounted(&path_old, &dj_old.fs, 1);
+ res = chk_mounted(&path_old, &djo.fs, 1);
if (res == FR_OK) {
- dj_new.fs = dj_old.fs;
- res = follow_path(&dj_old, path_old); /* Check old object */
- if (_FS_RPATH && res == FR_OK && (dj_old.fn[NS] & NS_DOT))
+ 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 (res != FR_OK) LEAVE_FF(dj_old.fs, res); /* The old object is not found */
-
- if (!dj_old.dir) LEAVE_FF(dj_old.fs, FR_NO_FILE); /* Is root dir? */
- mem_cpy(buf, dj_old.dir+DIR_Attr, 21); /* Save the object information */
-
- mem_cpy(&dj_new, &dj_old, sizeof(DIR));
- res = follow_path(&dj_new, path_new); /* Check new object */
- 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? */
- res = dir_register(&dj_new); /* Register the new object */
- if (res == FR_OK) {
- dir = dj_new.dir; /* Copy object information into new entry */
- mem_cpy(dir+13, buf+2, 19);
- dir[DIR_Attr] = buf[0] | AM_ARC;
- dj_old.fs->wflag = 1;
- if (dir[DIR_Attr] & AM_DIR) { /* Update .. entry in the directory if needed */
- dw = clust2sect(dj_new.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
- if (!dw) {
- res = FR_INT_ERR;
- } else {
- res = move_window(dj_new.fs, dw);
- dir = dj_new.fs->win+32;
- if (res == FR_OK && dir[1] == '.') {
- dw = (dj_new.fs->fs_type == FS_FAT32 && dj_new.sclust == dj_new.fs->dirbase) ? 0 : dj_new.sclust;
- ST_WORD(dir+DIR_FstClusLO, dw);
- ST_WORD(dir+DIR_FstClusHI, dw >> 16);
- dj_new.fs->wflag = 1;
+#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, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
+ if (!dw) {
+ res = FR_INT_ERR;
+ } else {
+ res = move_window(djn.fs, dw);
+ dir = djn.fs->win+32; /* .. entry */
+ if (res == FR_OK && dir[1] == '.') {
+ dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
+ ST_WORD(dir+DIR_FstClusLO, dw);
+ ST_WORD(dir+DIR_FstClusHI, dw >> 16);
+ djn.fs->wflag = 1;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&djo); /* Remove old entry */
+ if (res == FR_OK)
+ res = sync(djo.fs);
+ }
}
+/* End critical section */
}
}
- if (res == FR_OK) {
- res = dir_remove(&dj_old); /* Remove old entry */
- if (res == FR_OK)
- res = sync(dj_old.fs);
- }
}
+ FREE_BUF();
}
-
- LEAVE_FF(dj_old.fs, res);
+ LEAVE_FF(djo.fs, res);
}
#endif /* !_FS_READONLY */
/*-----------------------------------------------------------------------*/
-/* Forward data to the stream directly (Available on only _FS_TINY cfg) */
+/* Forward data to the stream directly (available on only tiny cfg) */
/*-----------------------------------------------------------------------*/
#if _USE_FORWARD && _FS_TINY
FRESULT res;
DWORD remain, clst, sect;
UINT rcnt;
+ BYTE csect;
- *bf = 0;
+ *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);
remain = fp->fsize - fp->fptr;
if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
- for ( ; btr && (*func)(NULL, 0); /* Repeat until all data transferred or stream becomes busy */
+ 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 (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
+ if (!csect) { /* On the cluster boundary? */
clst = (fp->fptr == 0) ? /* On the top of the file? */
fp->org_clust : get_fat(fp->fs, fp->curr_clust);
if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector address in the cluster */
}
- fp->csect++; /* Next sector address in the cluster */
}
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect - 1;
+ sect += csect;
if (move_window(fp->fs, sect)) /* Move sector window */
ABORT(fp->fs, FR_DISK_ERR);
fp->dsect = sect;
/*-----------------------------------------------------------------------*/
/* Create File System on the Drive */
/*-----------------------------------------------------------------------*/
-#define N_ROOTDIR 512 /* Multiple of 32 and <= 2048 */
+#define N_ROOTDIR 512 /* Multiple of 32 */
#define N_FATS 1 /* 1 or 2 */
-#define MAX_SECTOR 131072000UL /* Maximum partition size */
-#define MIN_SECTOR 2000UL /* Minimum partition size */
FRESULT f_mkfs (
- BYTE drv, /* Logical drive number */
- BYTE partition, /* Partitioning rule 0:FDISK, 1:SFD */
- WORD allocsize /* Allocation unit size [bytes] */
+ BYTE drv, /* Logical drive number */
+ BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
+ UINT au /* Allocation unit size [bytes] */
)
{
- static const DWORD sstbl[] = { 2048000, 1024000, 512000, 256000, 128000, 64000, 32000, 16000, 8000, 4000, 0 };
- static const WORD cstbl[] = { 32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512 };
- BYTE fmt, m, *tbl;
- DWORD b_part, b_fat, b_dir, b_data; /* Area offset (LBA) */
- DWORD n_part, n_rsv, n_fat, n_dir; /* Area size */
- DWORD n_clst, d, n;
- WORD as;
+ static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
+ static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
+ BYTE fmt, md, *tbl;
+ DWORD n_clst, vs, n;
+ UINT as, i;
+ DWORD b_vol, b_fat, b_dir, b_data; /* Area offset (LBA) */
+ DWORD n_vol, n_rsv, n_fat, n_dir; /* Area size */
FATFS *fs;
DSTATUS stat;
- /* Check validity of the parameters */
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;
- if (partition >= 2) return FR_MKFS_ABORTED;
-
/* Check mounted drive and clear work area */
+ if (drv >= _DRIVES) return FR_INVALID_DRIVE;
fs = FatFs[drv];
if (!fs) return FR_NOT_ENABLED;
fs->fs_type = 0;
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
- || SS(fs) > _MAX_SS)
- return FR_MKFS_ABORTED;
+#if _MAX_SS != 512 /* Get disk sector size */
+ if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ return FR_DISK_ERR;
#endif
- if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)
- return FR_MKFS_ABORTED;
- if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;
- b_part = (!partition) ? 63 : 0; /* Boot sector */
- n_part -= b_part;
- for (d = 512; d <= 32768U && d != allocsize; d <<= 1) ; /* Check validity of the allocation unit size */
- if (d != allocsize) allocsize = 0;
- if (!allocsize) { /* Auto selection of cluster size */
- d = n_part;
- for (as = SS(fs); as > 512U; as >>= 1) d >>= 1;
- for (n = 0; d < sstbl[n]; n++) ;
- allocsize = cstbl[n];
- }
- if (allocsize < SS(fs)) allocsize = SS(fs);
-
- allocsize /= SS(fs); /* Number of sectors per cluster */
-
- /* Pre-compute number of clusters and FAT type */
- n_clst = n_part / allocsize;
+ if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
+ return FR_DISK_ERR;
+ b_vol = (sfd == 1) ? 0 : 63; /* Volume start sector */
+ n_vol -= b_vol;
+ if (au & (au - 1)) au = 0; /* Check validity of the allocation unit size */
+ if (!au) { /* AU auto selection */
+ vs = n_vol / (2000 / (SS(fs) / 512));
+ for (i = 0; vs < vst[i]; i++) ;
+ au = cst[i];
+ }
+ if (_MAX_SS != 512 && au < SS(fs)) au = SS(fs);
+ au /= SS(fs); /* Number of sectors per cluster */
+ if (au == 0) au = 1;
+ if (au > 128) au = 128;
+
+ /* Pre-compute number of clusters and FAT syb-type */
+ n_clst = n_vol / au;
fmt = FS_FAT12;
- if (n_clst >= 0xFF5) fmt = FS_FAT16;
- if (n_clst >= 0xFFF5) fmt = FS_FAT32;
+ if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
+ if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
/* Determine offset and size of FAT structure */
- switch (fmt) {
- case FS_FAT12:
- n_fat = ((n_clst * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);
- n_rsv = 1 + partition;
- n_dir = N_ROOTDIR * 32 / SS(fs);
- break;
- case FS_FAT16:
- n_fat = ((n_clst * 2) + 4 + SS(fs) - 1) / SS(fs);
- n_rsv = 1 + partition;
- n_dir = N_ROOTDIR * 32 / SS(fs);
- break;
- default:
+ if (fmt == FS_FAT32) {
n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
- n_rsv = 33 - partition;
+ 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 = N_ROOTDIR * 32UL / SS(fs);
}
- b_fat = b_part + n_rsv; /* FATs start sector */
- b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */
- b_data = b_dir + n_dir; /* Data start sector */
+ 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) return FR_MKFS_ABORTED;
- n = (b_data + n - 1) & ~(n - 1);
- n_fat += (n - b_data) / N_FATS;
+ if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_DISK_ERR;
+ if (!n || n > 32768) return FR_MKFS_ABORTED;
+ n = (b_data + n - 1) & ~(n - 1); /* Next nearest boundary from current data start */
+ n = (n - b_data) / N_FATS;
+ if (fmt == FS_FAT32) { /* FAT32: Move FAT start */
+ n_rsv += n;
+ b_fat += n;
+ } else { /* FAT12/16: Expand FAT size */
+ n_fat += n;
+ }
/* b_dir and b_data are no longer used below */
- /* Determine number of cluster and final check of validity of the FAT type */
- n_clst = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;
- if ( (fmt == FS_FAT16 && n_clst < 0xFF5)
- || (fmt == FS_FAT32 && n_clst < 0xFFF5))
+ /* Determine number of cluster 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 needed */
- if (!partition) {
- DWORD n_disk = b_part + n_part;
+ /* Create partition table if required */
+ if (sfd == 1) {
+ md = 0xF0;
+ } else {
+ DWORD n_disk = b_vol + n_vol;
mem_set(fs->win, 0, SS(fs));
tbl = fs->win+MBR_Table;
}
tbl[5] = 254;
if (fmt != FS_FAT32) /* System ID */
- tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06;
+ 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_part); /* Partition size in LBA */
+ ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
ST_WORD(tbl+64, 0xAA55); /* Signature */
if (disk_write(drv, fs->win, 0, 1) != RES_OK)
return FR_DISK_ERR;
- partition = 0xF8;
- } else {
- partition = 0xF0;
+ md = 0xF8;
}
- /* Create boot record */
+ /* Create VBR */
tbl = fs->win; /* Clear buffer */
mem_set(tbl, 0, SS(fs));
ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */
- ST_WORD(tbl+BPB_BytsPerSec, SS(fs)); /* Sector size */
- tbl[BPB_SecPerClus] = (BYTE)allocsize; /* Sectors per cluster */
+ as = SS(fs); /* Sector size */
+ ST_WORD(tbl+BPB_BytsPerSec, as);
+ tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
- ST_WORD(tbl+BPB_RootEntCnt, SS(fs) / 32 * n_dir); /* Number of rootdir entries */
- if (n_part < 0x10000) { /* Number of total sectors */
- ST_WORD(tbl+BPB_TotSec16, n_part);
+ as = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
+ ST_WORD(tbl+BPB_RootEntCnt, as);
+ if (n_vol < 0x10000) { /* Number of total sectors */
+ ST_WORD(tbl+BPB_TotSec16, n_vol);
} else {
- ST_DWORD(tbl+BPB_TotSec32, n_part);
+ ST_DWORD(tbl+BPB_TotSec32, n_vol);
}
- tbl[BPB_Media] = partition; /* Media descripter */
+ 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_part); /* Hidden sectors */
- n = get_fattime(); /* Use current time as a VSN */
- if (fmt != FS_FAT32) {
- ST_DWORD(tbl+BS_VolID, n); /* Volume serial number */
- ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of secters 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 lavel, FAT signature */
- } else {
- ST_DWORD(tbl+BS_VolID32, n); /* Volume serial number */
- ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of secters per FAT */
- ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory cluster (2) */
- ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (bs+1) */
- ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (bs+6) */
+ 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 lavel, FAT signature */
- }
- ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature */
- if (SS(fs) > 512U) {
- ST_WORD(tbl+SS(fs)-2, 0xAA55);
+ 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 */
}
- if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)
+ ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
+ if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Original (VBR) */
return FR_DISK_ERR;
- if (fmt == FS_FAT32)
- disk_write(drv, tbl, b_part+6, 1);
+ if (fmt == FS_FAT32) /* Backup (VBR+6) */
+ disk_write(drv, tbl, b_vol + 6, 1);
/* Initialize FAT area */
- for (m = 0; m < N_FATS; m++) {
- mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
+ for (i = 0; i < N_FATS; i++) {
+ 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;
- n |= partition;
- ST_DWORD(tbl, n); /* Reserve cluster #0-1 (FAT12/16) */
+ n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
} else {
- ST_DWORD(tbl+0, 0xFFFFFFF8); /* Reserve cluster #0-1 (FAT32) */
- ST_DWORD(tbl+4, 0xFFFFFFFF);
+ n |= 0x0FFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
+ ST_DWORD(tbl+4, 0x0FFFFFFF);
ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
}
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
return FR_DISK_ERR;
- mem_set(tbl, 0, SS(fs)); /* Following FAT entries are filled by zero */
- for (n = 1; n < n_fat; n++) {
+ mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
+ for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector write */
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
return FR_DISK_ERR;
}
}
- /* Initialize Root directory */
- m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);
- do {
+ /* Initialize root directory */
+ n = (fmt == FS_FAT32) ? as : n_dir;
+ while (n--) {
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
return FR_DISK_ERR;
- } while (--m);
+ }
/* Create FSInfo record if needed */
if (fmt == FS_FAT32) {
ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
- disk_write(drv, tbl, b_part+1, 1);
- disk_write(drv, tbl, b_part+7, 1);
+ disk_write(drv, tbl, b_vol + 1, 1); /* Original (VBR+1) */
+ disk_write(drv, tbl, b_vol + 7, 1); /* Backup (VBR+7) */
}
- return (disk_ioctl(drv, CTRL_SYNC, (void*)NULL) == RES_OK) ? FR_OK : FR_DISK_ERR;
+ return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
}
#endif /* _USE_MKFS && !_FS_READONLY */
/*-----------------------------------------------------------------------*/
/* Get a string from the file */
/*-----------------------------------------------------------------------*/
-char* f_gets (
- char* buff, /* Pointer to the string buffer to read */
- int len, /* Size of string buffer */
- FIL* fil /* Pointer to the file object */
+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 i = 0;
- char *p = buff;
+ int n = 0;
+ TCHAR c, *p = buff;
+ BYTE s[2];
UINT rc;
- while (i < len - 1) { /* Read bytes until buffer gets filled */
- f_read(fil, p, 1, &rc);
- if (rc != 1) break; /* Break when no data to read */
+ 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 (*p == '\r') continue; /* Strip '\r' */
+ if (c == '\r') continue; /* Strip '\r' */
#endif
- i++;
- if (*p++ == '\n') break; /* Break when reached end of line */
+ *p++ = c;
+ n++;
+ if (c == '\n') break; /* Break on EOL */
}
*p = 0;
- return i ? buff : NULL; /* When no data read (eof or error), return with error. */
+ return n ? buff : 0; /* When no data read (eof or error), return with error. */
}
/* Put a character to the file */
/*-----------------------------------------------------------------------*/
int f_putc (
- int chr, /* A character to be output */
- FIL* fil /* Ponter to the file object */
+ TCHAR c, /* A character to be output */
+ FIL* fil /* Pointer to the file object */
)
{
- UINT bw;
- char c;
+ UINT bw, btw;
+ BYTE s[3];
#if _USE_STRFUNC >= 2
- if (chr == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
+ if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
#endif
- if (!fil) { /* Special value may be used to switch the destination to any other device */
- /* put_console(chr); */
- return chr;
- }
- c = (char)chr;
- f_write(fil, &c, 1, &bw); /* Write a byte to the file */
- return bw ? chr : EOF; /* Return the result */
+
+#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 char* str, /* Pointer to the string to be output */
+ const TCHAR* str, /* Pointer to the string to be output */
FIL* fil /* Pointer to the file object */
)
{
/*-----------------------------------------------------------------------*/
int f_printf (
FIL* fil, /* Pointer to the file object */
- const char* str, /* Pointer to the format string */
+ const TCHAR* str, /* Pointer to the format string */
... /* Optional arguments... */
)
{
va_list arp;
- UCHAR c, f, r;
+ BYTE f, r;
+ UINT i, w;
ULONG val;
- char s[16];
- int i, w, res, cc;
+ TCHAR c, d, s[16];
+ 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 cahracter */
+ if (c != '%') { /* Non escape character */
cc = f_putc(c, fil);
if (cc != EOF) cc = 1;
continue;
if (c == '0') { /* Flag: '0' padding */
f = 1; c = *str++;
}
- while (c >= '0' && c <= '9') { /* Precision */
- w = w * 10 + (c - '0');
+ while (IsDigit(c)) { /* Precision */
+ w = w * 10 + c - '0';
c = *str++;
}
- if (c == 'l') { /* Prefix: Size is long int */
+ if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
f |= 2; c = *str++;
}
- if (c == 's') { /* Type is string */
- cc = f_puts(va_arg(arp, char*), fil);
- continue;
- }
- if (c == 'c') { /* Type is character */
- cc = f_putc(va_arg(arp, int), fil);
- if (cc != EOF) cc = 1;
- continue;
- }
- r = 0;
- if (c == 'd') r = 10; /* Type is signed decimal */
- if (c == 'u') r = 10; /* Type is unsigned decimal */
- if (c == 'X') r = 16; /* Type is unsigned hexdecimal */
- if (r == 0) break; /* Unknown type */
- if (f & 2) { /* Get the value */
- val = (ULONG)va_arg(arp, long);
- } else {
- val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);
- }
- /* Put numeral string */
- if (c == 'd') {
- if (val & 0x80000000) {
- val = 0 - val;
- f |= 4;
+ if (!c) break;
+ d = c;
+ if (IsLower(d)) d -= 0x20;
+ switch (d) { /* Type is... */
+ case 'S' : /* String */
+ cc = f_puts(va_arg(arp, TCHAR*), fil); continue;
+ 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 */
+ cc = f_putc(c, fil); continue;
+ }
+
+ /* Get an argument */
+ val = (f & 2) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
+ if (d == 'D' && (val & 0x80000000)) {
+ val = 0 - val;
+ f |= 4;
+ }
+ /* Put it in numeral string */
+ i = 0;
+ do {
+ d = (TCHAR)(val % r); val /= r;
+ if (d > 9) {
+ d += 7;
+ if (c == 'x') d += 0x20;
}
+ s[i++] = d + '0';
+ } while (val && i < sizeof(s) / sizeof(s[0]));
+ if (f & 4) s[i++] = '-';
+ cc = 0;
+ while (i < w-- && cc != EOF) {
+ cc = f_putc((TCHAR)((f & 1) ? '0' : ' '), fil);
+ res++;
}
- i = sizeof(s) - 1; s[i] = 0;
do {
- c = (UCHAR)(val % r + '0');
- if (c > '9') c += 7;
- s[--i] = c;
- val /= r;
- } while (i && val);
- if (i && (f & 4)) s[--i] = '-';
- w = sizeof(s) - 1 - w;
- while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';
- cc = f_puts(&s[i], fil);
+ cc = f_putc(s[--i], fil);
+ res++;
+ } while (i && cc != EOF);
+ if (cc != EOF) cc = 0;
}
va_end(arp);
/*---------------------------------------------------------------------------/
-/ FatFs - FAT file system module include file R0.07e (C)ChaN, 2010
+/ FatFs - FAT file system module include file R0.08 (C)ChaN, 2010
/----------------------------------------------------------------------------/
/ 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
/ * No restriction on use. You can use, modify and redistribute it for
/ personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
/ * Redistributions of source code must retain the above copyright notice.
+/
/----------------------------------------------------------------------------*/
#ifndef _FATFS
-#define _FATFS 0x007E
+#define _FATFS 8085 /* Revision ID */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
#include "integer.h" /* Basic integer types */
#include "ffconf.h" /* FatFs configuration options */
-#if _FATFS != _FFCONFIG
+#if _FATFS != _FFCONF
#error Wrong configuration file (ffconf.h).
#endif
-/* Character code support macros */
-
-#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
-#define IsLower(c) (((c)>='a')&&((c)<='z'))
-
-#if _DF1S /* DBCS configuration */
-
-#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 /* SBCS configuration */
-
-#define IsDBCS1(c) 0
-#define IsDBCS2(c) 0
-
-#endif /* _DF1S */
-
-
-
-/* Definitions corresponds to multi partition */
+/* Definitions corresponds to volume management */
#if _MULTI_PARTITION /* Multiple partition configuration */
-
-typedef struct _PARTITION {
+#define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */
+#define LD2PT(drv) (Drives[drv].pt) /* Get partition# */
+typedef struct {
BYTE pd; /* Physical drive# */
BYTE pt; /* Partition # (0-3) */
} PARTITION;
-
-extern
-const PARTITION Drives[]; /* Logical drive# to physical location conversion table */
-#define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */
-#define LD2PT(drv) (Drives[drv].pt) /* Get partition# */
+extern const PARTITION Drives[]; /* Logical drive# to physical location conversion table */
#else /* Single partition configuration */
-
#define LD2PD(drv) (drv) /* Physical drive# is equal to the logical drive# */
#define LD2PT(drv) 0 /* Always mounts the 1st partition */
-/* Definitions corresponds to multiple sector size */
+/* Type of path name strings on FatFs API */
-#if _MAX_SS == 512 /* Single sector size */
-#define SS(fs) 512U
-
-#elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */
-#define SS(fs) ((fs)->s_size)
+#if _LFN_UNICODE /* Unicode string */
+#if !_USE_LFN
+#error _LFN_UNICODE must be 0 in non-LFN cfg.
+#endif
+#ifndef _INC_TCHAR
+typedef WCHAR TCHAR;
+#define _T(x) L ## x
+#define _TEXT(x) L ## x
+#endif
-#else
-#error Sector size must be 512, 1024, 2048 or 4096.
+#else /* ANSI/OEM string */
+#ifndef _INC_TCHAR
+typedef char TCHAR;
+#define _T(x) x
+#define _TEXT(x) x
+#endif
#endif
-/* Type of file name on FatFs API */
+/* Definitions corresponds to file shareing feature */
-#if _LFN_UNICODE && _USE_LFN
-typedef WCHAR XCHAR; /* Unicode */
-#else
-typedef char XCHAR; /* SBCS, DBCS */
+#if _FS_SHARE
+#if _FS_READONLY
+#error _FS_SHARE must be 0 on R/O cfg.
+#endif
+typedef struct {
+ DWORD clu; /* File ID 1, directory */
+ WORD idx; /* File ID 2, index in the directory */
+ WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:in write open */
+} FILESEM;
#endif
-/* File system object structure */
+/* File system object structure (FATFS) */
-typedef struct _FATFS_ {
- BYTE fs_type; /* FAT sub type */
- BYTE drive; /* Physical drive number */
- BYTE csize; /* Number of sectors per cluster */
- BYTE n_fats; /* Number of FAT copies */
- BYTE wflag; /* win[] dirty flag (1:must be written back) */
- BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
- WORD id; /* File system mount ID */
- WORD n_rootdir; /* Number of root directory entries (0 on FAT32) */
-#if _FS_REENTRANT
- _SYNC_t sobj; /* Identifier of sync object */
-#endif
+typedef struct {
+ BYTE fs_type; /* FAT sub-type (0:Not mounted) */
+ BYTE drv; /* Physical drive number */
+ BYTE csize; /* Sectors per cluster (1,2,4...128) */
+ BYTE n_fats; /* Number of FAT copies (1,2) */
+ BYTE wflag; /* win[] dirty flag (1:must be written back) */
+ BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
+ WORD id; /* File system mount ID */
+ WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
#if _MAX_SS != 512
- WORD s_size; /* Sector size */
+ WORD ssize; /* Bytes per sector (512,1024,2048,4096) */
+#endif
+#if _FS_REENTRANT
+ _SYNC_t sobj; /* Identifier of sync object */
#endif
#if !_FS_READONLY
- DWORD last_clust; /* Last allocated cluster */
- DWORD free_clust; /* Number of free clusters */
- DWORD fsi_sector; /* fsinfo sector */
+ DWORD last_clust; /* Last allocated cluster */
+ DWORD free_clust; /* Number of free clusters */
+ DWORD fsi_sector; /* fsinfo sector (FAT32) */
#endif
#if _FS_RPATH
- DWORD cdir; /* Current directory (0:root)*/
-#endif
- DWORD sects_fat; /* Sectors per fat */
- DWORD max_clust; /* Maximum cluster# + 1. Number of clusters is max_clust - 2 */
- DWORD fatbase; /* FAT start sector */
- DWORD dirbase; /* Root directory start sector (Cluster# on FAT32) */
- DWORD database; /* Data start sector */
- DWORD winsect; /* Current sector appearing in the win[] */
- BYTE win[_MAX_SS];/* Disk access window for Directory/FAT */
+ DWORD cdir; /* Current directory start cluster (0:root) */
+#endif
+ DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
+ DWORD fsize; /* Sectors per FAT */
+ DWORD fatbase; /* FAT start sector */
+ DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
+ DWORD database; /* Data start sector */
+ DWORD winsect; /* Current sector appearing in the win[] */
+ BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
+#if _FS_SHARE
+ FILESEM flsem[_FS_SHARE]; /* File lock semaphores */
+#endif
} FATFS;
-/* Directory object structure */
+/* File object structure (FIL) */
-typedef struct _DIR_ {
- FATFS* fs; /* Pointer to the owner file system object */
- WORD id; /* Owner file system mount ID */
- WORD index; /* Current read/write index number */
- DWORD sclust; /* Table start cluster (0:Static table) */
- DWORD clust; /* Current cluster */
- DWORD sect; /* Current sector */
- BYTE* dir; /* Pointer to the current SFN entry in the win[] */
- BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
-#if _USE_LFN
- WCHAR* lfn; /* Pointer to the LFN working buffer */
- WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
+typedef struct {
+ FATFS* fs; /* Pointer to the owner file system object */
+ WORD id; /* Owner file system mount ID */
+ BYTE flag; /* File status flags */
+ BYTE pad1;
+ DWORD fptr; /* File read/write pointer */
+ DWORD fsize; /* File size */
+ DWORD org_clust; /* File start cluster (0 when fsize==0) */
+ DWORD curr_clust; /* Current cluster */
+ DWORD dsect; /* Current data sector */
+#if !_FS_READONLY
+ DWORD dir_sect; /* Sector containing the directory entry */
+ BYTE* dir_ptr; /* Ponter to the directory entry in the window */
#endif
-} DIR;
+#if _USE_FASTSEEK
+ DWORD* cltbl; /* Pointer to the cluster link map table */
+#endif
+#if _FS_SHARE
+ UINT lockid; /* File lock ID */
+#endif
+#if !_FS_TINY
+ BYTE buf[_MAX_SS]; /* File data read/write buffer */
+#endif
+} FIL;
-/* File object structure */
+/* Directory object structure (DIR) */
-typedef struct _FIL_ {
- FATFS* fs; /* Pointer to the owner file system object */
- WORD id; /* Owner file system mount ID */
- BYTE flag; /* File status flags */
- BYTE csect; /* Sector address in the cluster */
- DWORD fptr; /* File R/W pointer */
- DWORD fsize; /* File size */
- DWORD org_clust; /* File start cluster */
- DWORD curr_clust; /* Current cluster */
- DWORD dsect; /* Current data sector */
-#if !_FS_READONLY
- DWORD dir_sect; /* Sector containing the directory entry */
- BYTE* dir_ptr; /* Ponter to the directory entry in the window */
-#endif
-#if !_FS_TINY
- BYTE buf[_MAX_SS];/* File R/W buffer */
+typedef struct {
+ FATFS* fs; /* Pointer to the owner file system object */
+ WORD id; /* Owner file system mount ID */
+ WORD index; /* Current read/write index number */
+ DWORD sclust; /* Table start cluster (0:Root dir) */
+ DWORD clust; /* Current cluster */
+ DWORD sect; /* Current sector */
+ BYTE* dir; /* Pointer to the current SFN entry in the win[] */
+ BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
+#if _USE_LFN
+ WCHAR* lfn; /* Pointer to the LFN working buffer */
+ WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
#endif
-} FIL;
+} DIR;
-/* File status structure */
+/* File status structure (FILINFO) */
-typedef struct _FILINFO_ {
- DWORD fsize; /* File size */
- WORD fdate; /* Last modified date */
- WORD ftime; /* Last modified time */
- BYTE fattrib; /* Attribute */
- char fname[13]; /* Short file name (8.3 format) */
+typedef struct {
+ DWORD fsize; /* File size */
+ WORD fdate; /* Last modified date */
+ WORD ftime; /* Last modified time */
+ BYTE fattrib; /* Attribute */
+ TCHAR fname[13]; /* Short file name (8.3 format) */
#if _USE_LFN
- XCHAR* lfname; /* Pointer to the LFN buffer */
- int lfsize; /* Size of LFN buffer [chrs] */
+ TCHAR* lfname; /* Pointer to the LFN buffer */
+ int lfsize; /* Size of LFN buffer [chrs] */
#endif
} FILINFO;
/* File function return code (FRESULT) */
typedef enum {
- FR_OK = 0, /* 0 */
- FR_DISK_ERR, /* 1 */
- FR_INT_ERR, /* 2 */
- FR_NOT_READY, /* 3 */
- FR_NO_FILE, /* 4 */
- FR_NO_PATH, /* 5 */
- FR_INVALID_NAME, /* 6 */
- FR_DENIED, /* 7 */
- FR_EXIST, /* 8 */
- FR_INVALID_OBJECT, /* 9 */
- FR_WRITE_PROTECTED, /* 10 */
- FR_INVALID_DRIVE, /* 11 */
- FR_NOT_ENABLED, /* 12 */
- FR_NO_FILESYSTEM, /* 13 */
- FR_MKFS_ABORTED, /* 14 */
- FR_TIMEOUT /* 15 */
+ FR_OK = 0, /* (0) Succeeded */
+ FR_DISK_ERR, /* (1) A hard error occured in the low level disk I/O layer */
+ FR_INT_ERR, /* (2) Assertion failed */
+ FR_NOT_READY, /* (3) The physical drive cannot work */
+ FR_NO_FILE, /* (4) Could not find the file */
+ FR_NO_PATH, /* (5) Could not find the path */
+ FR_INVALID_NAME, /* (6) The path name format is invalid */
+ FR_DENIED, /* (7) Acces denied due to prohibited access or directory full */
+ FR_EXIST, /* (8) Acces denied due to prohibited access */
+ FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
+ FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
+ FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
+ FR_NOT_ENABLED, /* (12) The volume has no work area */
+ FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume on the physical drive */
+ FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
+ FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
+ FR_LOCKED, /* (16) The operation is rejected according to the file shareing policy */
+ FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
+ FR_TOO_MANY_OPEN_FILES /* (18) Number of open files > _FS_SHARE */
} FRESULT;
/* FatFs module application interface */
FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
-FRESULT f_open (FIL*, const XCHAR*, BYTE); /* Open or create a file */
+FRESULT f_open (FIL*, const TCHAR*, BYTE); /* Open or create a file */
FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */
-FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */
FRESULT f_close (FIL*); /* Close an open file object */
-FRESULT f_opendir (DIR*, const XCHAR*); /* Open an existing directory */
+FRESULT f_opendir (DIR*, const TCHAR*); /* Open an existing directory */
FRESULT f_readdir (DIR*, FILINFO*); /* Read a directory item */
-FRESULT f_stat (const XCHAR*, FILINFO*); /* Get file status */
-FRESULT f_getfree (const XCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
+FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
+#if !_FS_READONLY
+FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
+FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
FRESULT f_truncate (FIL*); /* Truncate file */
FRESULT f_sync (FIL*); /* Flush cached data of a writing file */
-FRESULT f_unlink (const XCHAR*); /* Delete an existing file or directory */
-FRESULT f_mkdir (const XCHAR*); /* Create a new directory */
-FRESULT f_chmod (const XCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
-FRESULT f_utime (const XCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
-FRESULT f_rename (const XCHAR*, const XCHAR*); /* Rename/Move a file or directory */
+FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
+FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
+FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
+FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
+FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
+#endif
+#if _USE_FORWARD
FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
-FRESULT f_mkfs (BYTE, BYTE, WORD); /* Create a file system on the drive */
-FRESULT f_chdir (const XCHAR*); /* Change current directory */
+#endif
+#if _USE_MKFS
+FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
+#endif
+#if _FS_RPATH
+FRESULT f_chdir (const TCHAR*); /* Change current directory */
FRESULT f_chdrive (BYTE); /* Change current drive */
-
+#endif
#if _USE_STRFUNC
-int f_putc (int, FIL*); /* Put a character to the file */
-int f_puts (const char*, FIL*); /* Put a string to the file */
-int f_printf (FIL*, const char*, ...); /* Put a formatted string to the file */
-char* f_gets (char*, int, FIL*); /* Get a string from the file */
+int f_putc (TCHAR, FIL*); /* Put a character to the file */
+int f_puts (const TCHAR*, FIL*); /* Put a string to the file */
+int f_printf (FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
+TCHAR* f_gets (TCHAR*, int, FIL*); /* Get a string from the file */
#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
#define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
#ifndef EOF
-#define EOF -1
+#define EOF (-1)
#endif
#endif
/*--------------------------------------------------------------*/
-/* User defined functions */
+/* Additional user defined functions */
-/* Real time clock */
+/* RTC function */
#if !_FS_READONLY
-DWORD get_fattime (void); /* 31-25: Year(0-127 org.1980), 24-21: Month(1-12), 20-16: Day(1-31) */
- /* 15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) */
+DWORD get_fattime (void);
#endif
-/* Unicode - OEM code conversion */
-#if _USE_LFN
-WCHAR ff_convert (WCHAR, UINT);
-WCHAR ff_wtoupper (WCHAR);
+/* Unicode support functions */
+#if _USE_LFN /* Unicode - OEM code conversion */
+WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
+WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
+#if _USE_LFN == 3 /* Memory functions */
+void* ff_memalloc (UINT); /* Allocate memory block */
+void ff_memfree (void*); /* Free memory block */
+#endif
#endif
/* Sync functions */
#if _FS_REENTRANT
-BOOL ff_cre_syncobj(BYTE, _SYNC_t*);
-BOOL ff_del_syncobj(_SYNC_t);
-BOOL ff_req_grant(_SYNC_t);
-void ff_rel_grant(_SYNC_t);
+int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
+int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
+int ff_req_grant (_SYNC_t); /* Lock sync object */
+void ff_rel_grant (_SYNC_t); /* Unlock sync object */
#endif
+
/*--------------------------------------------------------------*/
/* Flags and offset address */
#define FA_READ 0x01
#define FA_OPEN_EXISTING 0x00
-#if _FS_READONLY == 0
+#define FA__ERROR 0x80
+
+#if !_FS_READONLY
#define FA_WRITE 0x02
#define FA_CREATE_NEW 0x04
#define FA_CREATE_ALWAYS 0x08
#define FA__WRITTEN 0x20
#define FA__DIRTY 0x40
#endif
-#define FA__ERROR 0x80
/* FAT sub type (FATFS.fs_type) */
#define AM_MASK 0x3F /* Mask of defined bits */
-/* FatFs refers the members in the FAT structures with byte offset instead
-/ of structure member because there are incompatibility of the packing option
+/* Fast seek function */
+#define CREATE_LINKMAP 0xFFFFFFFF
+
+
+/* FatFs refers the members in the FAT structures with byte offset instead of
+/ structure member because there are incompatibility of the packing option
/ between various compilers. */
#define BS_jmpBoot 0
#define ST_DWORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *(BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8); *(BYTE*)((ptr)+2)=(BYTE)((DWORD)(val)>>16); *(BYTE*)((ptr)+3)=(BYTE)((DWORD)(val)>>24)
#endif
+#ifdef __cplusplus
+}
+#endif
#endif /* _FATFS */
/*---------------------------------------------------------------------------/
-/ FatFs - FAT file system module configuration file R0.07e (C)ChaN, 2010
+/ FatFs - FAT file system module configuration file R0.08 (C)ChaN, 2010
/----------------------------------------------------------------------------/
/
/ CAUTION! Do not forget to make clean the project after any changes to
/ the configuration options.
/
/----------------------------------------------------------------------------*/
-#ifndef _FFCONFIG
-#define _FFCONFIG 0x007E
+#ifndef _FFCONF
+#define _FFCONF 8085 /* Revision ID */
/*---------------------------------------------------------------------------/
/ Function and Buffer Configurations
/----------------------------------------------------------------------------*/
-#define _FS_TINY 1 /* 0 or 1 */
+#define _FS_TINY 1 /* 0:Normal or 1:Tiny */
/* When _FS_TINY is set to 1, FatFs uses the sector buffer in the file system
/ object instead of the sector buffer in the individual file object for file
/ data transfer. This reduces memory consumption 512 bytes each file object. */
-#define _FS_READONLY 0 /* 0 or 1 */
+#define _FS_READONLY 0 /* 0:Read/Write or 1:Read only */
/* Setting _FS_READONLY to 1 defines read only configuration. This removes
/ writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename,
/ f_truncate and useless f_getfree. */
/ 3: f_lseek is removed in addition to level 2. */
-#define _USE_STRFUNC 0 /* 0, 1 or 2 */
+#define _USE_STRFUNC 0 /* 0:Disable or 1/2:Enable */
/* To enable string functions, set _USE_STRFUNC to 1 or 2. */
-#define _USE_MKFS 0 /* 0 or 1 */
+#define _USE_MKFS 0 /* 0:Disable or 1:Enable */
/* To enable f_mkfs function, set _USE_MKFS to 1 and set _FS_READONLY to 0 */
-#define _USE_FORWARD 0 /* 0 or 1 */
+#define _USE_FORWARD 0 /* 0:Disable or 1:Enable */
/* To enable f_forward function, set _USE_FORWARD to 1 and set _FS_TINY to 1. */
+#define _USE_FASTSEEK 0 /* 0:Disable or 1:Enable */
+/* To enable fast seek feature, set _USE_FASTSEEK to 1. */
+
+
/*---------------------------------------------------------------------------/
/ Locale and Namespace Configurations
*/
-#define _USE_LFN 0 /* 0, 1 or 2 */
+#define _USE_LFN 0 /* 0 to 3 */
#define _MAX_LFN 255 /* Maximum LFN length to handle (12 to 255) */
/* The _USE_LFN option switches the LFN support.
/
/ 0: Disable LFN. _MAX_LFN and _LFN_UNICODE have no effect.
/ 1: Enable LFN with static working buffer on the bss. NOT REENTRANT.
/ 2: Enable LFN with dynamic working buffer on the STACK.
+/ 3: Enable LFN with dynamic working buffer on the HEAP.
/
/ The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes. When enable LFN,
-/ two Unicode handling functions ff_convert() and ff_wtoupper() must be added
-/ to the project. */
+/ Unicode handling functions ff_convert() and ff_wtoupper() must be added
+/ to the project. When enable to use heap, memory control functions
+/ ff_memalloc() and ff_memfree() must be added to the project. */
-#define _LFN_UNICODE 0 /* 0 or 1 */
+#define _LFN_UNICODE 0 /* 0:ANSI/OEM or 1:Unicode */
/* To switch the character code set on FatFs API to Unicode,
-/ enable LFN feature and set _LFN_UNICODE to 1.
-*/
+/ enable LFN feature and set _LFN_UNICODE to 1. */
-#define _FS_RPATH 0 /* 0 or 1 */
+#define _FS_RPATH 0 /* 0:Disable or 1:Enable */
/* When _FS_RPATH is set to 1, relative path feature is enabled and f_chdir,
/ f_chdrive function are available.
/ Note that output of the f_readdir fnction is affected by this option. */
/ to the disk_ioctl function. */
-#define _MULTI_PARTITION 0 /* 0 or 1 */
+#define _MULTI_PARTITION 0 /* 0:Single parition or 1:Multiple partition */
/* When _MULTI_PARTITION is set to 0, each volume is bound to the same physical
/ drive number and can mount only first primaly partition. When it is set to 1,
/ each volume is tied to the partitions listed in Drives[]. */
/----------------------------------------------------------------------------*/
#define _WORD_ACCESS 1 /* 0 or 1 */
-/* The _WORD_ACCESS option defines which access method is used to the word
-/ data on the FAT volume.
+/* Set 0 first and it is always compatible with all platforms. The _WORD_ACCESS
+/ option defines which access method is used to the word data on the FAT volume.
/
-/ 0: Byte-by-byte access. Always compatible with all platforms.
+/ 0: Byte-by-byte access.
/ 1: Word access. Do not choose this unless following condition is met.
/
-/ When the byte order on the memory is big-endian or address miss-aligned
-/ word access results incorrect behavior, the _WORD_ACCESS must be set to 0.
+/ When the byte order on the memory is big-endian or address miss-aligned word
+/ access results incorrect behavior, the _WORD_ACCESS must be set to 0.
/ If it is not the case, the value can also be set to 1 to improve the
/ performance and code size. */
-#define _FS_REENTRANT 0 /* 0 or 1 */
+#define _FS_REENTRANT 0 /* 0:Disable or 1:Enable */
#define _FS_TIMEOUT 1000 /* Timeout period in unit of time ticks */
#define _SYNC_t HANDLE /* O/S dependent type of sync object. e.g. HANDLE, OS_EVENT*, ID and etc.. */
+/* Include a header file here to define O/S system calls */
+/* #include <windows.h>, <ucos_ii.h.h>, <semphr.h> or ohters. */
+
/* The _FS_REENTRANT option switches the reentrancy of the FatFs module.
/
/ 0: Disable reentrancy. _SYNC_t and _FS_TIMEOUT have no effect.
/ function must be added to the project. */
+#define _FS_SHARE 0 /* 0:Disable or >=1:Enable */
+/* To enable file shareing feature, set _FS_SHARE to >= 1 and also user
+ provided memory handlers, ff_memalloc and ff_memfree function must be
+ added to the project. The value defines number of files can be opened
+ per volume. */
+
+
#endif /* _FFCONFIG */
/*-------------------------------------------*/
#ifndef _INTEGER
+#define _INTEGER
+
+#ifdef _WIN32 /* FatFs development platform */
-#if 0
#include <windows.h>
-#else
+#include <tchar.h>
+
+#else /* Embedded platform */
/* These types must be 16-bit, 32-bit or larger integer */
typedef int INT;
typedef unsigned int UINT;
/* These types must be 8-bit integer */
-typedef signed char CHAR;
+typedef char CHAR;
typedef unsigned char UCHAR;
typedef unsigned char BYTE;
typedef unsigned long ULONG;
typedef unsigned long DWORD;
-/* Boolean type */
-typedef enum { FALSE = 0, TRUE } BOOL;
+typedef unsigned char BOOL;
#endif
-#define _INTEGER
#endif
};
/** Non-volatile Logging Interval value in EEPROM, stored as a number of 500ms ticks */
-uint8_t EEMEM LoggingInterval500MS_EEPROM;
+uint8_t EEMEM LoggingInterval500MS_EEPROM = DEFAULT_LOG_INTERVAL;
/** SRAM Logging Interval value fetched from EEPROM, stored as a number of 500ms ticks */
uint8_t LoggingInterval500MS_SRAM;
/* Fetch logging interval from EEPROM */
LoggingInterval500MS_SRAM = eeprom_read_byte(&LoggingInterval500MS_EEPROM);
+
+ /* Check if the logging interval is invalid (0xFF) indicating that the EEPROM is blank */
+ if (LoggingInterval500MS_SRAM == 0xFF)
+ LoggingInterval500MS_SRAM = DEFAULT_LOG_INTERVAL;
/* Mount and open the log file on the dataflash FAT partition */
OpenLogFile();
/** HID class driver callback function for the creation of HID reports to the host.
*
- * \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
- * \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
- * \param[in] ReportType Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
- * \param[out] ReportData Pointer to a buffer where the created report should be stored
- * \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent
+ * \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
+ * \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the
+ * generated report ID
+ * \param[in] ReportType Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
+ * \param[out] ReportData Pointer to a buffer where the created report should be stored
+ * \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent
*
* \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
*/
/** HID class driver callback function for the processing of HID reports from the host.
*
* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
- * \param[in] ReportID Report ID of the received report from the host
+ * \param[in] ReportID Report ID of the received report from the host
* \param[in] ReportType The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
* \param[in] ReportData Pointer to a buffer where the created report has been stored
* \param[in] ReportSize Size in bytes of the received HID report
/** Filename for the log data when written to the dataflash FAT filesystem. */
#define LOG_FILENAME "TEMPLOG.txt"
- /** Data log interval between samples, in tens of milliseconds. */
- #define LOG_INTERVAL_10MS 1000
+ /** Default log interval when the EEPROM is blank, in 500ms ticks. */
+ #define DEFAULT_LOG_INTERVAL 20
/* Type Defines: */
typedef struct
# Place -D or -U options here for C sources
CDEFS = -DF_CPU=$(F_CPU)UL -DF_CLOCK=$(F_CLOCK)UL -DBOARD=BOARD_$(BOARD) $(LUFA_OPTS)
CDEFS += -DDUMMY_RTC
+CDEFS += -DLOG_WHILE_USB_CONNECTED
# Place -D or -U options here for ASM sources
-FatFs Module Source Files R0.07e (C)ChaN, 2010
+FatFs Module Source Files R0.08 (C)ChaN, 2010
FILES
Added string functions: fputc(), fputs(), fprintf() and fgets().
Improved performance of f_lseek() on move to the same or following cluster.
- Apr 01, 2010, R0.07 Merged Tiny-FatFs as a buffer configuration option.
+ Apr 01, 2009, R0.07 Merged Tiny-FatFs as a buffer configuration option.
Added long file name support.
Added multiple code page support.
Added re-entrancy for multitask operation.
Changed result code of critical errors.
Renamed string functions to avoid name collision.
- Apr 14, 2010, R0.07a Separated out OS dependent code on reentrant cfg.
+ Apr 14, 2009, R0.07a Separated out OS dependent code on reentrant cfg.
Added multiple sector size support.
- Jun 21, 2010, R0.07c Fixed f_unlink() may return FR_OK on error.
+ Jun 21, 2009, R0.07c Fixed f_unlink() may return FR_OK on error.
Fixed wrong cache control in f_lseek().
Added relative path feature.
Added f_chdir().
Added f_chdrive().
Added proper case conversion for extended characters.
- Nov 03,'2010 R0.07e Separated out configuration options from ff.h to ffconf.h.
+ Nov 03, 2009 R0.07e Separated out configuration options from ff.h to ffconf.h.
Added a configuration option, _LFN_UNICODE.
Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
Fixed name matching error on the 13 char boundary.
Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
+
+ May 15, 2010, R0.08 Added a memory configuration option. (_USE_LFN)
+ 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.
/*----------------------------------------------------------------------------/
-/ FatFs - FAT file system module R0.07e (C)ChaN, 2010
+/ FatFs - FAT file system module R0.08 (C)ChaN, 2010
/-----------------------------------------------------------------------------/
/ 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 trems.
+/ developments under license policy of following terms.
/
/ Copyright (C) 2010, ChaN, all right reserved.
/
/
/ Jun 01,'06 R0.02 Added FAT12 support.
/ Removed unbuffered mode.
-/ Fixed a problem on small (<32M) patition.
+/ 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 algolithm to write files fast.
+/ 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 plysical drive.
+/ 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().
/ 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)
+/ 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.
/---------------------------------------------------------------------------*/
#include "ff.h" /* FatFs configurations and declarations */
#include "diskio.h" /* Declarations of low level disk I/O functions */
+
/*--------------------------------------------------------------------------
Module Private Definitions
---------------------------------------------------------------------------*/
-#if _FATFS != 0x007E
+#if _FATFS != 8085
#error Wrong include file (ff.h).
#endif
+
+/* FAT sub-type boundaries */
+/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
+#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
+#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
+
+
+/* Definitions corresponds to multiple sector size */
+#if _MAX_SS == 512 /* Single sector size */
+#define SS(fs) 512U
+#elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */
+#define SS(fs) ((fs)->ssize)
+#else
+#error Wrong 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.
#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
-#ifndef NULL
-#define NULL 0
+
+/* 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 /* Offset of name status byte */
#define NS_LOSS 0x01 /* Out of 8.3 format */
+/*------------------------------------------------------------*/
+/* Work area */
-/*--------------------------------------------------------------------------
-
- Private Work Area
-
----------------------------------------------------------------------------*/
-
-#if _DRIVES < 1 || _DRIVES > 9
-#error Number of drives must be 1-9.
+#if !_DRIVES
+#error Number of drives must not be 0.
#endif
static
-FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
-
-static
WORD Fsid; /* File system mount ID */
+static
+FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
#if _FS_RPATH
static
#endif
-#if _USE_LFN == 1 /* LFN with static LFN working buffer */
-static
-WCHAR LfnBuf[_MAX_LFN + 1];
-#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR *lp = LfnBuf
-#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp
+#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 dynamic LFN working buffer */
-#define NAMEBUF(sp,lp) BYTE sp[12]; WCHAR lbuf[_MAX_LFN + 1], *lp = lbuf
-#define INITBUF(dj,sp,lp) dj.fn = sp; dj.lfn = lp
+#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()
-#else /* No LFN */
-#define NAMEBUF(sp,lp) BYTE sp[12]
-#define INITBUF(dj,sp,lp) dj.fn = sp
+#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
/* Copy memory to memory */
static
void mem_cpy (void* dst, const void* src, int cnt) {
- char *d = (char*)dst;
- const char *s = (const char *)src;
- while (cnt--) *d++ = *s++;
+ 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, int cnt) {
- char *d = (char*)dst;
- while (cnt--) *d++ = (char)val;
+ BYTE *d = (BYTE*)dst;
+
+ while (cnt--)
+ *d++ = (BYTE)val;
}
/* Compare memory to memory */
static
int mem_cmp (const void* dst, const void* src, int cnt) {
- const char *d = (const char *)dst, *s = (const char *)src;
+ const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
int r = 0;
+
while (cnt-- && (r = *d++ - *s++) == 0) ;
return r;
}
#if _FS_REENTRANT
static
-BOOL lock_fs (
+int lock_fs (
FATFS *fs /* File system object */
)
{
/*-----------------------------------------------------------------------*/
+/* 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 (dj->fs->flsem[i].ctr) { /* Existing entry */
+ if (dj->fs->flsem[i].clu == dj->sclust && /* The file is found (identified with its location) */
+ dj->fs->flsem[i].idx == dj->index) break;
+ } else { /* Blank entry */
+ be++;
+ }
+ }
+ if (i == _FS_SHARE) /* The file has not been opened */
+ return (be || acc != 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
+
+ /* The file has been opened. Reject any open against writing file and all write mode open */
+ return (acc || dj->fs->flsem[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+}
+
+
+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 && fs->flsem[i].ctr; 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 (dj->fs->flsem[i].ctr &&
+ dj->fs->flsem[i].clu == dj->sclust &&
+ dj->fs->flsem[i].idx == dj->index) break;
+ }
+
+ if (i == _FS_SHARE) { /* Not opened. Register it as new. */
+ for (i = 0; i < _FS_SHARE && dj->fs->flsem[i].ctr; i++) ;
+ if (i == _FS_SHARE) return 0; /* No space to register (int err) */
+ dj->fs->flsem[i].clu = dj->sclust;
+ dj->fs->flsem[i].idx = dj->index;
+ }
+
+ if (acc && dj->fs->flsem[i].ctr) return 0; /* Access violation (int err) */
+
+ dj->fs->flsem[i].ctr = acc ? 0x100 : dj->fs->flsem[i].ctr + 1; /* Set semaphore value */
+
+ return i + 1;
+}
+
+
+static
+FRESULT dec_lock ( /* Decrement file open counter */
+ FATFS* fs, /* File system object */
+ UINT i /* Semaphore index */
+)
+{
+ WORD n;
+ FRESULT res;
+
+
+ if (--i < _FS_SHARE) {
+ n = fs->flsem[i].ctr;
+ if (n >= 0x100) n = 0;
+ if (n) n--;
+ fs->flsem[i].ctr = n;
+ res = FR_OK;
+ } else {
+ res = FR_INT_ERR;
+ }
+ return res;
+}
+
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
/* Change window offset */
/*-----------------------------------------------------------------------*/
static
FRESULT move_window (
FATFS *fs, /* File system object */
- DWORD sector /* Sector number to make apperance in the fs->win[] */
+ DWORD sector /* Sector number to make appearance in the fs->win[] */
) /* Move to zero only writes back dirty window */
{
DWORD wsect;
if (wsect != sector) { /* Changed current window */
#if !_FS_READONLY
if (fs->wflag) { /* Write back dirty window if needed */
- if (disk_write(fs->drive, fs->win, wsect, 1) != RES_OK)
+ if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
return FR_DISK_ERR;
fs->wflag = 0;
- if (wsect < (fs->fatbase + fs->sects_fat)) { /* In FAT area */
+ if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
BYTE nf;
- for (nf = fs->n_fats; nf > 1; nf--) { /* Refrect the change to all FAT copies */
- wsect += fs->sects_fat;
- disk_write(fs->drive, fs->win, wsect, 1);
+ 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->drive, fs->win, sector, 1) != RES_OK)
+ if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
return FR_DISK_ERR;
fs->winsect = sector;
}
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);
- disk_write(fs->drive, fs->win, fs->fsi_sector, 1);
+ 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->drive, CTRL_SYNC, (void*)NULL) != RES_OK)
+ if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
res = FR_DISK_ERR;
}
/*-----------------------------------------------------------------------*/
-DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Interal error, Else:Cluster status */
+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;
- DWORD fsect;
+ BYTE *p;
- if (clst < 2 || clst >= fs->max_clust) /* Range check */
+ if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
return 1;
- fsect = fs->fatbase;
switch (fs->fs_type) {
case FS_FAT12 :
- bc = clst; bc += bc / 2;
- if (move_window(fs, fsect + (bc / SS(fs)))) break;
- wc = fs->win[bc & (SS(fs) - 1)]; bc++;
- if (move_window(fs, fsect + (bc / SS(fs)))) break;
- wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;
+ 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, fsect + (clst / (SS(fs) / 2)))) break;
- return LD_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)]);
+ 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, fsect + (clst / (SS(fs) / 4)))) break;
- return LD_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;
+ 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 occured at the disk I/O layer */
+ return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
}
FRESULT put_fat (
FATFS *fs, /* File system object */
- DWORD clst, /* Cluster# to be changed in range of 2 to fs->max_clust - 1 */
+ 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;
- DWORD fsect;
FRESULT res;
- if (clst < 2 || clst >= fs->max_clust) { /* Range check */
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
res = FR_INT_ERR;
} else {
- fsect = fs->fatbase;
switch (fs->fs_type) {
case FS_FAT12 :
bc = clst; bc += bc / 2;
- res = move_window(fs, fsect + (bc / SS(fs)));
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
if (res != FR_OK) break;
- p = &fs->win[bc & (SS(fs) - 1)];
+ p = &fs->win[bc % SS(fs)];
*p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
bc++;
fs->wflag = 1;
- res = move_window(fs, fsect + (bc / SS(fs)));
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
if (res != FR_OK) break;
- p = &fs->win[bc & (SS(fs) - 1)];
+ 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, fsect + (clst / (SS(fs) / 2)));
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
if (res != FR_OK) break;
- ST_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)], (WORD)val);
+ p = &fs->win[clst * 2 % SS(fs)];
+ ST_WORD(p, (WORD)val);
break;
case FS_FAT32 :
- res = move_window(fs, fsect + (clst / (SS(fs) / 4)));
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
if (res != FR_OK) break;
- ST_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)], val);
+ p = &fs->win[clst * 4 % SS(fs)];
+ val |= LD_DWORD(p) & 0xF0000000;
+ ST_DWORD(p, val);
break;
default :
DWORD nxt;
- if (clst < 2 || clst >= fs->max_clust) { /* Check the range of cluster# */
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
res = FR_INT_ERR;
} else {
res = FR_OK;
- while (clst < fs->max_clust) { /* Not a last link? */
+ 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? */
DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
)
{
- DWORD cs, ncl, scl, mcl;
+ DWORD cs, ncl, scl;
- mcl = fs->max_clust;
- if (clst == 0) { /* Create new chain */
+ if (clst == 0) { /* Create a new chain */
scl = fs->last_clust; /* Get suggested start point */
- if (scl == 0 || scl >= mcl) scl = 1;
+ if (!scl || scl >= fs->n_fatent) scl = 1;
}
- else { /* Stretch existing chain */
+ 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 < mcl) return cs; /* It is already followed by next 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 >= mcl) { /* Wrap around */
+ if (ncl >= fs->n_fatent) { /* Wrap around */
ncl = 2;
- if (ncl > scl) return 0; /* No free custer */
+ 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 occured */
+ if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
return cs;
- if (ncl == scl) return 0; /* No free custer */
+ if (ncl == scl) return 0; /* No free cluster */
}
- if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "in use" */
+ if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "last link" */
return 0xFFFFFFFF;
if (clst != 0) { /* Link it to the previous one if needed */
if (put_fat(fs, clst, ncl))
)
{
clst -= 2;
- if (clst >= (fs->max_clust - 2)) return 0; /* Invalid cluster# */
+ if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
return clst * fs->csize + fs->database;
}
/*-----------------------------------------------------------------------*/
-/* Directory handling - Seek directory index */
+/* Directory handling - Set directory index */
/*-----------------------------------------------------------------------*/
static
-FRESULT dir_seek (
+FRESULT dir_sdi (
DIR *dj, /* Pointer to directory object */
WORD idx /* Directory index number */
)
dj->index = idx;
clst = dj->sclust;
- if (clst == 1 || clst >= dj->fs->max_clust) /* Check start cluster range */
+ 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;
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->max_clust) /* Reached to end of table or int error */
+ if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
return FR_INT_ERR;
idx -= ic;
}
/*-----------------------------------------------------------------------*/
static
-FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not streach */
+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 */
- BOOL streach /* FALSE: Do not streach table, TRUE: Streach table if needed */
+ int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
)
{
DWORD clst;
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->max_clust) { /* When it reached end of dynamic table */
+ if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
#if !_FS_READONLY
BYTE c;
- if (!streach) return FR_NO_FILE; /* When do not streach, report EOT */
- clst = create_chain(dj->fs, dj->clust); /* Streach cluster chain */
+ 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 streached table */
+ /* 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 */
static
-BOOL cmp_lfn ( /* TRUE:Matched, FALSE:Not matched */
+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 */
)
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 FALSE; /* Not matched */
+ return 0; /* Not matched */
} else {
- if (uc != 0xFFFF) return FALSE; /* Check filler */
+ if (uc != 0xFFFF) return 0; /* Check filler */
}
} while (++s < 13); /* Repeat until all chars in the entry are checked */
if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */
- return FALSE;
+ return 0;
- return TRUE; /* The part of LFN matched */
+ return 1; /* The part of LFN matched */
}
static
-BOOL pick_lfn ( /* TRUE:Succeeded, FALSE:Buffer overflow */
+int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
BYTE *dir /* Pointer to the directory entry */
)
s = 0; wc = 1;
do {
- uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ 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 FALSE; /* Buffer overflow? */
- lfnbuf[i++] = wc = uc; /* Store it */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i++] = wc = uc; /* Store it */
} else {
- if (uc != 0xFFFF) return FALSE; /* Check filler */
+ if (uc != 0xFFFF) return 0; /* Check filler */
}
} while (++s < 13); /* Read all character in the entry */
if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */
- if (i >= _MAX_LFN) return FALSE; /* Buffer overflow? */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
lfnbuf[i] = 0;
}
- return TRUE;
+ return 1;
}
/*-----------------------------------------------------------------------*/
#if _USE_LFN
void gen_numname (
- BYTE *dst, /* Pointer to genartated SFN */
+ BYTE *dst, /* Pointer to generated SFN */
const BYTE *src, /* Pointer to source SFN to be modified */
const WCHAR *lfn, /* Pointer to LFN */
- WORD num /* Sequense number */
+ WORD seq /* Sequence number */
)
{
- char ns[8];
+ BYTE ns[8], c;
int i, j;
mem_cpy(dst, src, 11);
- if (num > 5) { /* On many collisions, generate a hash number instead of sequencial number */
- do num = (num >> 1) + (num << 15) + (WORD)*lfn++; while (*lfn);
+ 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 */
i = 7;
do {
- ns[i--] = (num % 10) + '0';
- num /= 10;
- } while (num);
+ c = (seq % 16) + '0';
+ if (c > '9') c += 7;
+ ns[i--] = c;
+ seq /= 16;
+ } while (seq);
ns[i] = '~';
/* Append the number */
BYTE a, ord, sum;
#endif
- res = dir_seek(dj, 0); /* Rewind directory object */
+ res = dir_sdi(dj, 0); /* Rewind directory object */
if (res != FR_OK) return res;
#if _USE_LFN
if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
break;
#endif
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
} while (res == FR_OK);
return res;
if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
break;
#endif
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
if (res != FR_OK) break;
}
if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */
if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
- fn[NS] = 0; dj->lfn = NULL; /* Find only SFN */
+ 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 */
fn[NS] = sn[NS]; dj->lfn = lfn;
}
- if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve reserve an SFN + LFN entries. */
+ 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. */
}
/* Reserve contiguous entries */
- res = dir_seek(dj, 0);
+ res = dir_sdi(dj, 0);
if (res != FR_OK) return res;
n = is = 0;
do {
if (res != FR_OK) break;
c = *dj->dir; /* Check the entry status */
if (c == 0xE5 || c == 0) { /* Is it a blank entry? */
- if (n == 0) is = dj->index; /* First index of the contigulus entry */
- if (++n == ne) break; /* A contiguous entry that requiered count is found */
+ 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, TRUE); /* Next entry with table streach */
+ 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_seek(dj, is);
+ res = dir_sdi(dj, is);
if (res == FR_OK) {
sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
ne--;
if (res != FR_OK) break;
fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
dj->fs->wflag = 1;
- res = dir_next(dj, FALSE); /* Next entry */
+ res = dir_next(dj, 0); /* Next entry */
} while (res == FR_OK && --ne);
}
}
#else /* Non LFN configuration */
- res = dir_seek(dj, 0);
+ 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 == 0xE5 || c == 0) break; /* Is it a blank entry? */
- res = dir_next(dj, TRUE); /* Next entry with table streach */
+ res = dir_next(dj, 1); /* Next entry with table stretch */
} while (res == FR_OK);
}
#endif
dir = dj->dir;
mem_set(dir, 0, 32); /* 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;
}
}
WORD i;
i = dj->index; /* SFN index */
- res = dir_seek(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
+ 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);
*dj->dir = 0xE5; /* 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, FALSE); /* Next entry */
+ 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_seek(dj, dj->index);
+ res = dir_sdi(dj, dj->index);
if (res == FR_OK) {
res = move_window(dj->fs, dj->sect);
if (res == FR_OK) {
static
FRESULT create_name (
DIR *dj, /* Pointer to the directory object */
- const XCHAR **path /* Pointer to pointer to the segment in the path string */
+ const TCHAR **path /* Pointer to pointer to the segment in the path string */
)
{
#ifdef _EXCVT
- static const BYTE cvt[] = _EXCVT;
+ static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
#endif
#if _USE_LFN /* LFN configuration */
BYTE b, cf;
WCHAR w, *lfn;
int i, ni, si, di;
- const XCHAR *p;
+ const TCHAR *p;
/* Create LFN in Unicode */
si = di = 0;
return FR_INVALID_NAME;
lfn[di++] = w; /* Store the Unicode char */
}
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *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? */
if (w != ' ' && w != '.') break;
di--;
}
- if (!di) return FR_INVALID_NAME; /* Reject null string */
+ if (!di) return FR_INVALID_NAME; /* Reject nul string */
lfn[di] = 0; /* LFN is created */
b = i = 0; ni = 8;
for (;;) {
w = lfn[si++]; /* Get an LFN char */
- if (!w) break; /* Break on enf of the LFN */
+ 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 (w >= 0x80) { /* Non ASCII char */
#ifdef _EXCVT
w = ff_convert(w, 0); /* Unicode -> OEM code */
- if (w) w = cvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
+ 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
}
dj->fn[i++] = (BYTE)(w >> 8);
} else { /* Single byte char */
- if (!w || chk_chr("+,;[=]", w)) { /* Replace illegal chars for SFN */
+ 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 */
#if _FS_RPATH
if (p[si] == '.') { /* Is this a dot entry? */
for (;;) {
- c = p[si++];
+ c = (BYTE)p[si++];
if (c != '.' || si >= 3) break;
sfn[i++] = c;
}
if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *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 = p[si++];
+ 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;
}
if (c >= 0x80) { /* Extended char */
#ifdef _EXCVT
- c = cvt[c - 0x80]; /* Convert extend char (SBCS) */
+ c = excvt[c - 0x80]; /* Convert extend char (SBCS) */
#else
- b |= 3; /* Eliminate NT flag if ext char is exist */
+ b |= 3; /* Eliminate NT flag if extended char is exist */
#if !_DF1S /* ASCII only cfg */
return FR_INVALID_NAME;
#endif
#endif
}
if (IsDBCS1(c)) { /* DBC 1st byte? */
- d = p[si++]; /* Get 2nd byte */
+ d = (BYTE)p[si++]; /* Get 2nd byte */
if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
return FR_INVALID_NAME;
sfn[i++] = c;
sfn[i++] = d;
} else { /* Single byte code */
- if (chk_chr(" \"*+,[=]|\x7F", c)) /* Reject illegal chrs for SFN */
+ if (chk_chr("\"*+,:<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
return FR_INVALID_NAME;
if (IsUpper(c)) { /* ASCII large capital? */
b |= 2;
sfn[i++] = c;
}
}
- *path = &p[si]; /* Rerurn pointer to the next segment */
+ *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 null string */
+ if (!i) return FR_INVALID_NAME; /* Reject nul string */
if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */
if (ni == 8) b <<= 2;
- if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Extension has only small capital) */
- if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Filename has only small capital) */
+ 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 */
)
{
int i;
- BYTE c, nt, *dir;
- char *p;
+ BYTE nt, *dir;
+ TCHAR *p, c;
p = fno->fname;
for (i = 0; i < 8; i++) { /* Copy name body */
c = dir[i];
if (c == ' ') break;
- if (c == 0x05) c = 0xE5;
+ if (c == 0x05) c = (TCHAR)0xE5;
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 */
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;
}
}
#if _USE_LFN
if (fno->lfname) {
- XCHAR *tp = fno->lfname;
+ TCHAR *tp = fno->lfname;
WCHAR w, *lfn;
i = 0;
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 */
- tp[i++] = (XCHAR)(w >> 8);
+ tp[i++] = (TCHAR)(w >> 8);
#endif
if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */
- tp[i++] = (XCHAR)w;
+ tp[i++] = (TCHAR)w;
}
}
tp[i] = 0; /* Terminator */
static
FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
DIR *dj, /* Directory object to return last directory and found object */
- const XCHAR *path /* Full-path string to find a file or directory */
+ const TCHAR *path /* Full-path string to find a file or directory */
)
{
FRESULT res;
- BYTE *dir, last;
+ BYTE *dir, ns;
- while (!_USE_LFN && *path == ' ') path++; /* Skip leading spaces */
#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 saparator */
+ } else { /* No heading separator */
dj->sclust = dj->fs->cdir; /* Start from the current dir */
}
#else
dj->sclust = 0; /* Start from the root dir */
#endif
- if ((UINT)*path < ' ') { /* Null path means the start directory itself */
- res = dir_seek(dj, 0);
- dj->dir = NULL;
+ 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 */
- last = *(dj->fn+NS) & NS_LAST;
- if (res != FR_OK) { /* Could not find the object */
- if (res == FR_NO_FILE && !last)
- res = FR_NO_PATH;
+ 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 (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 */
+ 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 = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
/*-----------------------------------------------------------------------*/
static
-BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */
+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->drive, fs->win, sect, 1) != RES_OK) /* Load boot record */
+ 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;
/* Make sure that the file system is valid */
/*-----------------------------------------------------------------------*/
-
-FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occured */
- const XCHAR **path, /* Pointer to pointer to the path name (drive number) */
+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, *tbl;
+ BYTE fmt, b, *tbl;
UINT vol;
DSTATUS stat;
- DWORD bsect, fsize, tsect, mclst;
- const XCHAR *p = *path;
+ DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
+ WORD nrsv;
+ const TCHAR *p = *path;
FATFS *fs;
/* Get logical drive number from the path name */
/* Check if the logical drive is valid or not */
if (vol >= _DRIVES) /* Is the drive number valid? */
return FR_INVALID_DRIVE;
- *rfs = fs = FatFs[vol]; /* Returen pointer to the corresponding file system object */
+ *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->drive);
+ 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 */
}
}
- /* The logical drive must be mounted. Following code attempts to mount the volume */
+ /* The logical drive must be mounted. Following code attempts to mount the volume (initialize the file system object) */
fs->fs_type = 0; /* Clear the file system object */
- fs->drive = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
- stat = disk_initialize(fs->drive); /* Initialize low level disk I/O layer */
+ fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
+ stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
if (stat & STA_NOINIT) /* Check if the drive is ready */
return FR_NOT_READY;
#if _MAX_SS != 512 /* Get disk sector size if needed */
- if (disk_ioctl(fs->drive, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
return FR_NO_FILESYSTEM;
#endif
#if !_FS_READONLY
if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
return FR_WRITE_PROTECTED;
#endif
- /* Search FAT partition on the drive */
- fmt = check_fs(fs, bsect = 0); /* Check sector 0 as an SFD format */
- if (fmt == 1) { /* Not an FAT boot record, it may be patitioned */
- /* Check a partition listed in top of the partition table */
+ /* 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) * 16]; /* Partition table */
if (tbl[4]) { /* Is the partition existing? */
bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
}
}
if (fmt == 3) return FR_DISK_ERR;
- if (fmt || LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* No valid FAT patition is found */
+ 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;
- /* Initialize the file system object */
- fsize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
- if (!fsize) fsize = LD_DWORD(fs->win+BPB_FATSz32);
- fs->sects_fat = fsize;
- fs->n_fats = fs->win[BPB_NumFATs]; /* Number of FAT copies */
- fsize *= fs->n_fats; /* (Number of sectors in FAT area) */
- fs->fatbase = bsect + LD_WORD(fs->win+BPB_RsvdSecCnt); /* FAT start sector (lba) */
- fs->csize = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
- fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Nmuber of root directory entries */
+ 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 1,2,4...128) */
+
+ fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
+ if (fs->n_rootdir % (SS(fs) / 32)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
+
tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
- fs->max_clust = mclst = (tsect /* Last cluster# + 1 (Number of clusters + 2) */
- - LD_WORD(fs->win+BPB_RsvdSecCnt) - fsize - fs->n_rootdir / (SS(fs)/32)
- ) / fs->csize + 2;
- fmt = FS_FAT12; /* Determine the FAT sub type */
- if (mclst >= 0xFF7) fmt = FS_FAT16; /* Number of clusters >= 0xFF5 */
- if (mclst >= 0xFFF7) fmt = FS_FAT32; /* Number of clusters >= 0xFFF5 */
+ 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) / 32); /* 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;
- if (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 */
- else
- fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */
- fs->database = fs->fatbase + fsize + fs->n_rootdir / (SS(fs)/32); /* Data start sector (lba) */
+ 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)) /* (FAT size must not be less than FAT sectors */
+ return FR_NO_FILESYSTEM;
#if !_FS_READONLY
- /* Initialize allocation information */
+ /* Initialize cluster allocation information */
fs->free_clust = 0xFFFFFFFF;
- fs->wflag = 0;
- /* Get fsinfo if needed */
+ 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->drive, fs->win, fs->fsi_sector, 1) == RES_OK &&
+ 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);
+ 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
- fs->id = ++Fsid; /* File system mount ID */
+#if _FS_SHARE /* Clear file lock semaphores */
+ for (vol = 0; vol < _FS_SHARE; vol++)
+ fs->flsem[vol].ctr = 0;
+#endif
return FR_OK;
}
ENTER_FF(fs); /* Lock file system */
- if (disk_status(fs->drive) & STA_NOINIT)
+ if (disk_status(fs->drv) & STA_NOINIT)
return FR_NOT_READY;
return FR_OK;
/*-----------------------------------------------------------------------*/
-/* Mount/Unmount a Locical Drive */
+/* Mount/Unmount a Logical Drive */
/*-----------------------------------------------------------------------*/
FRESULT f_mount (
FRESULT f_open (
FIL *fp, /* Pointer to the blank file object */
- const XCHAR *path, /* Pointer to the file name */
+ const TCHAR *path, /* Pointer to the file name */
BYTE mode /* Access mode and file open mode flags */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
- fp->fs = NULL; /* Clear file object */
+ 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_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)));
+ 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
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
+ INIT_BUF(dj);
+ if (res == FR_OK)
+ res = follow_path(&dj, path); /* Follow the file path */
+ dir = dj.dir;
-#if !_FS_READONLY
+#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 ps, cl;
+ 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 (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);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
+#endif
mode |= FA_CREATE_ALWAYS;
- dir = dj.dir; /* Created entry (SFN entry) */
+ dir = dj.dir; /* New entry */
}
- else { /* Any object is already existing */
- if (mode & FA_CREATE_NEW) /* Cannot create new */
- LEAVE_FF(dj.fs, FR_EXIST);
- dir = dj.dir;
- if (!dir || (dir[DIR_Attr] & (AM_RDO | AM_DIR))) /* Cannot overwrite it (R/O or DIR) */
- LEAVE_FF(dj.fs, FR_DENIED);
- if (mode & FA_CREATE_ALWAYS) { /* Resize it to zero on over write mode */
- cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
- ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
- ST_WORD(dir+DIR_FstClusLO, 0);
- ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
- dj.fs->wflag = 1;
- ps = dj.fs->winsect; /* Remove the cluster chain */
- if (cl) {
- res = remove_chain(dj.fs, cl);
- if (res) LEAVE_FF(dj.fs, res);
- dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
- }
- res = move_window(dj.fs, ps);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
+ else { /* Any object is already existing */
+ if (mode & FA_CREATE_NEW) { /* Cannot create new */
+ res = FR_EXIST;
+ } else {
+ if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) /* Cannot overwrite it (R/O or DIR) */
+ res = FR_DENIED;
}
}
- if (mode & FA_CREATE_ALWAYS) {
+ 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 */
- ps = get_fattime();
- ST_DWORD(dir+DIR_CrtTime, ps); /* Created time */
+ ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
+ cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
+ ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
+ ST_WORD(dir+DIR_FstClusLO, 0);
dj.fs->wflag = 1;
- mode |= FA__WRITTEN; /* Set file changed flag */
+ 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);
+ }
+ }
}
}
- /* Open an existing file */
- else {
-#endif /* !_FS_READONLY */
- if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
- dir = dj.dir;
- if (!dir || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */
- LEAVE_FF(dj.fs, FR_NO_FILE);
-#if !_FS_READONLY
- if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
- LEAVE_FF(dj.fs, FR_DENIED);
+ else { /* Open an existing file */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
+ res = FR_NO_FILE;
+ } else {
+ if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+ res = FR_DENIED;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ if (mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW))
+ mode |= FA__WRITTEN; /* Set file changed flag */
+ fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
+ fp->dir_ptr = dir;
+#if _FS_SHARE
+ fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (!fp->lockid) res = FR_INT_ERR;
+#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;
+ }
}
- fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
- fp->dir_ptr = dj.dir;
#endif
- fp->flag = mode; /* File access mode */
- fp->org_clust = /* File start cluster */
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
- fp->fptr = 0; fp->csect = 255; /* File pointer */
- fp->dsect = 0;
- fp->fs = dj.fs; fp->id = dj.fs->id; /* Owner file system object of the file */
+ FREE_BUF();
+
+ if (res == FR_OK) {
+ fp->flag = mode; /* File access mode */
+ fp->org_clust = /* File start cluster */
+ ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
+ fp->fptr = 0; /* File pointer */
+ fp->dsect = 0;
+#if _USE_FASTSEEK
+ fp->cltbl = 0; /* No cluster link map table */
+#endif
+ fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
+ }
- LEAVE_FF(dj.fs, FR_OK);
+ LEAVE_FF(dj.fs, res);
}
FRESULT res;
DWORD clst, sect, remain;
UINT rcnt, cc;
- BYTE *rbuff = buff;
+ BYTE csect, *rbuff = buff;
- *br = 0; /* Initialize bytes read */
+ *br = 0; /* Initialize byte counter */
res = validate(fp->fs, fp->id); /* Check validity of the object */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
for ( ; btr; /* Repeat until all data transferred */
rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
clst = (fp->fptr == 0) ? /* On the top of the file? */
fp->org_clust : get_fat(fp->fs, fp->curr_clust);
if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector offset in the cluster */
}
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect;
+ sect += csect;
cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
if (cc) { /* Read maximum contiguous sectors directly */
- if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
- cc = fp->fs->csize - fp->csect;
- if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)
+ 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
+#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) /* Replace one of the read sectors with cached data if it contains a dirty sector */
+ 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) /* Replace one of the read sectors with cached data if it contains a dirty sector */
+ 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
- fp->csect += (BYTE)cc; /* Next sector address in the cluster */
rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
continue;
}
#if !_FS_TINY
#if !_FS_READONLY
if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
#endif
if (fp->dsect != sect) { /* Fill sector buffer with file data */
- if (disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+ if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
}
#endif
fp->dsect = sect;
- fp->csect++; /* Next sector address in the cluster */
}
rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
if (rcnt > btr) rcnt = btr;
DWORD clst, sect;
UINT wcnt, cc;
const BYTE *wbuff = buff;
+ BYTE csect;
- *bw = 0; /* Initialize bytes written */
+ *bw = 0; /* Initialize byte counter */
res = validate(fp->fs, fp->id); /* Check validity of the object */
if (res != FR_OK) LEAVE_FF(fp->fs, res);
for ( ; btw; /* Repeat until all data transferred */
wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
if (fp->fptr == 0) { /* On the top of the file? */
clst = fp->org_clust; /* Follow from the origin */
if (clst == 0) /* When there is no cluster chain, */
fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
} else { /* Middle or end of the file */
- clst = create_chain(fp->fs, fp->curr_clust); /* Follow or streach cluster chain */
+ clst = create_chain(fp->fs, fp->curr_clust); /* Follow or stretch cluster chain */
}
if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector address in the cluster */
}
#if _FS_TINY
if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */
ABORT(fp->fs, FR_DISK_ERR);
#else
if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
#endif
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect;
+ sect += csect;
cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
if (cc) { /* Write maximum contiguous sectors directly */
- if (fp->csect + cc > fp->fs->csize) /* Clip at cluster boundary */
- cc = fp->fs->csize - fp->csect;
- if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
#if _FS_TINY
if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
fp->flag &= ~FA__DIRTY;
}
#endif
- fp->csect += (BYTE)cc; /* Next sector address in the cluster */
wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
continue;
}
#else
if (fp->dsect != sect) { /* Fill sector buffer with file data */
if (fp->fptr < fp->fsize &&
- disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+ disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
ABORT(fp->fs, FR_DISK_ERR);
}
#endif
fp->dsect = sect;
- fp->csect++; /* Next sector address in the cluster */
}
wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
if (wcnt > btw) wcnt = btw;
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->drive, fp->buf, fp->dsect, 1) != RES_OK)
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
LEAVE_FF(fp->fs, FR_DISK_ERR);
fp->flag &= ~FA__DIRTY;
}
ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */
ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
- tim = get_fattime(); /* Updated time */
+ tim = get_fattime(); /* Update updated time */
ST_DWORD(dir+DIR_WrtTime, tim);
fp->flag &= ~FA__WRITTEN;
fp->fs->wflag = 1;
{
FRESULT res;
-
#if _FS_READONLY
- res = validate(fp->fs, fp->id);
- if (res == FR_OK) fp->fs = NULL;
- LEAVE_FF(fp->fs, res);
+ 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->fs, fp->lockid);
+ unlock_fs(fp->fs, FR_OK);
+ }
#else
- res = f_sync(fp);
- if (res == FR_OK) fp->fs = NULL;
+ res = dec_lock(fp->fs, fp->lockid);
+#endif
+ }
+#endif
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
return res;
#endif
}
FRESULT f_chdir (
- const XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 0);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the path */
+ FREE_BUF();
if (res == FR_OK) { /* Follow completed */
dir = dj.dir; /* Pointer to the entry */
if (!dir) {
- dj.fs->cdir = 0; /* No entry (root dir) */
+ dj.fs->cdir = dj.sclust; /* Start directory itself */
} else {
- if (dir[DIR_Attr] & AM_DIR) /* Reached to the dir */
+ if (dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
else
- res = FR_NO_PATH; /* Could not reach the dir (it is a file) */
+ res = FR_NO_PATH; /* Reached but a file */
}
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
)
{
FRESULT res;
- DWORD clst, bcs, nsect, ifptr;
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 (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; fp->csect = 255;
- if (ofs > 0) {
- 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->curr_clust;
- } else { /* When seek to back cluster, */
- clst = fp->org_clust; /* start from the first cluster */
-#if !_FS_READONLY
- if (clst == 0) { /* If no cluster chain, create a new chain */
- clst = create_chain(fp->fs, 0);
- if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->org_clust = clst;
+
+#if _USE_FASTSEEK
+ if (fp->cltbl) { /* Fast seek */
+ DWORD cl, pcl, ncl, tcl, dsc, tlen, *tbl = fp->cltbl;
+ BYTE csc;
+
+ tlen = *tbl++;
+ if (ofs == CREATE_LINKMAP) { /* Create link map table */
+ cl = fp->org_clust;
+ if (cl) {
+ do {
+ if (tlen < 4) { /* Not enough table items */
+ res = FR_NOT_ENOUGH_CORE; break;
+ }
+ tcl = cl; ncl = 0;
+ do { /* Get a fragment and store the top and length */
+ pcl = cl; ncl++;
+ cl = get_fat(fp->fs, cl);
+ if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ } while (cl == pcl + 1);
+ *tbl++ = ncl; *tbl++ = tcl;
+ tlen -= 2;
+ } while (cl < fp->fs->n_fatent);
}
+ *tbl = 0; /* Terminate table */
+
+ } else { /* Fast seek */
+ if (ofs > fp->fsize) /* Clip offset at the file size */
+ ofs = fp->fsize;
+ fp->fptr = ofs; /* Set file pointer */
+ if (ofs) {
+ dsc = (ofs - 1) / SS(fp->fs);
+ cl = dsc / fp->fs->csize;
+ for (;;) {
+ ncl = *tbl++;
+ if (!ncl) ABORT(fp->fs, FR_INT_ERR);
+ if (cl < ncl) break;
+ cl -= ncl; tbl++;
+ }
+ fp->curr_clust = cl + *tbl;
+ csc = (BYTE)(dsc & (fp->fs->csize - 1));
+ dsc = clust2sect(fp->fs, fp->curr_clust);
+ if (!dsc) ABORT(fp->fs, FR_INT_ERR);
+ dsc += csc;
+ if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) {
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
#endif
- fp->curr_clust = clst;
+ fp->dsect = dsc;
+ }
+ }
}
- if (clst != 0) {
- while (ofs > bcs) { /* Cluster following loop */
+ } 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
- if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
- clst = create_chain(fp->fs, clst); /* Force streached if in write mode */
- if (clst == 0) { /* When disk gets full, clip file size */
- ofs = bcs; break;
- }
- } else
+ && !(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->curr_clust;
+ } else { /* When seek to back cluster, */
+ clst = fp->org_clust; /* start from the first cluster */
+#if !_FS_READONLY
+ if (clst == 0) { /* If no cluster chain, create a new chain */
+ clst = create_chain(fp->fs, 0);
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->org_clust = clst;
+ }
#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->max_clust) ABORT(fp->fs, FR_INT_ERR);
fp->curr_clust = clst;
- fp->fptr += bcs;
- ofs -= bcs;
}
- fp->fptr += ofs;
- fp->csect = (BYTE)(ofs / SS(fp->fs)); /* Sector offset in the cluster */
- if (ofs % SS(fp->fs)) {
- nsect = clust2sect(fp->fs, clst); /* Current sector */
- if (!nsect) ABORT(fp->fs, FR_INT_ERR);
- nsect += fp->csect;
- fp->csect++;
+ 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->curr_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) {
+ if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
#if !_FS_TINY
#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Write-back dirty buffer if needed */
- if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
+ if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
#endif
- if (disk_read(fp->fs->drive, fp->buf, nsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
+ if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
#endif
- fp->dsect = nsect;
- }
+ fp->dsect = nsect;
+ }
#if !_FS_READONLY
- if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */
- fp->fsize = fp->fptr;
- fp->flag |= FA__WRITTEN;
- }
+ if (fp->fptr > fp->fsize) { /* Set changed 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 XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj->fs, 0);
if (res == FR_OK) {
- INITBUF((*dj), sfn, lfn);
+ INIT_BUF(*dj);
res = follow_path(dj, path); /* Follow the path to the directory */
+ FREE_BUF();
if (res == FR_OK) { /* Follow completed */
dir = dj->dir;
- if (dir) { /* It is not the root dir */
+ if (dir) { /* It is not the current dir */
if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
} else { /* The object is not a directory */
}
if (res == FR_OK) {
dj->id = dj->fs->id;
- res = dir_seek(dj, 0); /* Rewind dir */
+ res = dir_sdi(dj, 0); /* Rewind dir */
}
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
)
{
FRESULT res;
- NAMEBUF(sfn, lfn);
+ DEF_NAMEBUF;
res = validate(dj->fs, dj->id); /* Check validity of the object */
if (res == FR_OK) {
- INITBUF((*dj), sfn, lfn);
if (!fno) {
- res = dir_seek(dj, 0);
+ res = dir_sdi(dj, 0);
} else {
+ INIT_BUF(*dj);
res = dir_read(dj);
if (res == FR_NO_FILE) {
dj->sect = 0;
}
if (res == FR_OK) { /* A valid entry is found */
get_fileinfo(dj, fno); /* Get the object information */
- res = dir_next(dj, FALSE); /* Increment index for next */
+ res = dir_next(dj, 0); /* Increment index for next */
if (res == FR_NO_FILE) {
dj->sect = 0;
res = FR_OK;
}
}
+ FREE_BUF();
}
}
/*-----------------------------------------------------------------------*/
FRESULT f_stat (
- const XCHAR *path, /* Pointer to the file path */
+ const TCHAR *path, /* Pointer to the file path */
FILINFO *fno /* Pointer to file information to return */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 0);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ INIT_BUF(dj);
res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) { /* Follwo completed */
- if (dj.dir) /* Found an object */
+ if (res == FR_OK) { /* Follow completed */
+ if (dj.dir) /* Found an object */
get_fileinfo(&dj, fno);
- else /* It is root dir */
+ else /* It is root dir */
res = FR_INVALID_NAME;
}
+ FREE_BUF();
}
LEAVE_FF(dj.fs, res);
/*-----------------------------------------------------------------------*/
FRESULT f_getfree (
- const XCHAR *path, /* Pointer to the logical drive number (root dir) */
+ 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 */
)
/* Get drive number */
res = chk_mounted(&path, fatfs, 0);
- if (res != FR_OK) LEAVE_FF(*fatfs, res);
-
- /* If number of free cluster is valid, return it without cluster scan. */
- if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {
- *nclst = (*fatfs)->free_clust;
- LEAVE_FF(*fatfs, FR_OK);
- }
-
- /* 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) LEAVE_FF(*fatfs, FR_DISK_ERR);
- if (stat == 1) LEAVE_FF(*fatfs, FR_INT_ERR);
- if (stat == 0) n++;
- } while (++clst < (*fatfs)->max_clust);
- } else {
- clst = (*fatfs)->max_clust;
- sect = (*fatfs)->fatbase;
- i = 0; p = 0;
- do {
- if (!i) {
- res = move_window(*fatfs, sect++);
- if (res != FR_OK)
- LEAVE_FF(*fatfs, res);
- p = (*fatfs)->win;
- i = SS(*fatfs);
- }
- if (fat == FS_FAT16) {
- if (LD_WORD(p) == 0) n++;
- p += 2; i -= 2;
+ 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 {
- if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
- p += 4; i -= 4;
+ 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);
}
- } while (--clst);
+ (*fatfs)->free_clust = n;
+ if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+ *nclst = n;
+ }
}
- (*fatfs)->free_clust = n;
- if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
- *nclst = n;
-
- LEAVE_FF(*fatfs, FR_OK);
+ LEAVE_FF(*fatfs, 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 (!(fp->flag & FA_WRITE)) /* Check access mode */
- LEAVE_FF(fp->fs, FR_DENIED);
-
- 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->org_clust);
- fp->org_clust = 0;
- } else { /* When truncate a part of the file, remove remaining clusters */
- ncl = get_fat(fp->fs, fp->curr_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->max_clust) {
- res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
- if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ 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->org_clust);
+ fp->org_clust = 0;
+ } else { /* When truncate a part of the file, remove remaining clusters */
+ ncl = get_fat(fp->fs, fp->curr_clust);
+ res = FR_OK;
+ if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (ncl == 1) res = FR_INT_ERR;
+ if (res == FR_OK && ncl < fp->fs->n_fatent) {
+ res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
+ if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ }
}
}
+ if (res != FR_OK) fp->flag |= FA__ERROR;
}
- if (res != FR_OK) fp->flag |= FA__ERROR;
LEAVE_FF(fp->fs, res);
}
/*-----------------------------------------------------------------------*/
FRESULT f_unlink (
- const XCHAR *path /* Pointer to the file or directory path */
+ const TCHAR *path /* Pointer to the file or directory path */
)
{
FRESULT res;
DIR dj, sdj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
DWORD dclst;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
-
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
-
- dir = dj.dir;
- if (!dir) /* Is it the root directory? */
- LEAVE_FF(dj.fs, FR_INVALID_NAME);
- if (dir[DIR_Attr] & AM_RDO) /* Is it a R/O object? */
- LEAVE_FF(dj.fs, FR_DENIED);
- dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
-
- if (dir[DIR_Attr] & AM_DIR) { /* It is a sub-directory */
- if (dclst < 2) LEAVE_FF(dj.fs, FR_INT_ERR);
- mem_cpy(&sdj, &dj, sizeof(DIR)); /* Check if the sub-dir is empty or not */
- sdj.sclust = dclst;
- res = dir_seek(&sdj, 2);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- res = dir_read(&sdj);
- if (res == FR_OK) res = FR_DENIED; /* Not empty sub-dir */
- if (res != FR_NO_FILE) LEAVE_FF(dj.fs, res);
- }
-
- res = dir_remove(&dj); /* Remove directory entry */
if (res == FR_OK) {
- if (dclst)
- res = remove_chain(dj.fs, dclst); /* Remove the cluster chain */
- if (res == FR_OK) res = sync(dj.fs);
+ 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 = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ 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);
}
/*-----------------------------------------------------------------------*/
FRESULT f_mkdir (
- const XCHAR *path /* Pointer to the directory path */
+ const TCHAR *path /* Pointer to the directory path */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir, n;
- DWORD dsect, dclst, pclst, tim;
+ DWORD dsc, dcl, pcl, tim = get_fattime();
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
-
- INITBUF(dj, sfn, lfn);
- res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) res = FR_EXIST; /* Any file or directory is already existing */
- if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res != FR_NO_FILE) /* Any error occured */
- LEAVE_FF(dj.fs, res);
-
- dclst = create_chain(dj.fs, 0); /* Allocate a new cluster for new directory table */
- res = FR_OK;
- if (dclst == 0) res = FR_DENIED;
- if (dclst == 1) res = FR_INT_ERR;
- if (dclst == 0xFFFFFFFF) res = FR_DISK_ERR;
- if (res == FR_OK)
- res = move_window(dj.fs, 0);
- if (res != FR_OK) LEAVE_FF(dj.fs, res);
- dsect = clust2sect(dj.fs, dclst);
-
- dir = dj.fs->win; /* Initialize the new directory table */
- mem_set(dir, 0, SS(dj.fs));
- mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
- dir[DIR_Name] = '.';
- dir[DIR_Attr] = AM_DIR;
- tim = get_fattime();
- ST_DWORD(dir+DIR_WrtTime, tim);
- ST_WORD(dir+DIR_FstClusLO, dclst);
- ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
- mem_cpy(dir+32, dir, 32); /* Create ".." entry */
- dir[33] = '.';
- pclst = dj.sclust;
- if (dj.fs->fs_type == FS_FAT32 && pclst == dj.fs->dirbase)
- pclst = 0;
- ST_WORD(dir+32+DIR_FstClusLO, pclst);
- ST_WORD(dir+32+DIR_FstClusHI, pclst >> 16);
- for (n = 0; n < dj.fs->csize; n++) { /* Write dot entries and clear left sectors */
- dj.fs->winsect = dsect++;
- dj.fs->wflag = 1;
- res = move_window(dj.fs, 0);
- if (res) LEAVE_FF(dj.fs, res);
- mem_set(dir, 0, SS(dj.fs));
- }
-
- res = dir_register(&dj);
- if (res != FR_OK) {
- remove_chain(dj.fs, dclst);
- } else {
- dir = dj.dir;
- dir[DIR_Attr] = AM_DIR; /* Attribute */
- ST_DWORD(dir+DIR_WrtTime, tim); /* Crated time */
- ST_WORD(dir+DIR_FstClusLO, dclst); /* Table start cluster */
- ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
- dj.fs->wflag = 1;
- res = sync(dj.fs);
+ 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_WORD(dir+DIR_FstClusLO, dcl);
+ ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ mem_cpy(dir+32, dir, 32); /* Create ".." entry */
+ dir[33] = '.'; pcl = dj.sclust;
+ if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
+ pcl = 0;
+ ST_WORD(dir+32+DIR_FstClusLO, pcl);
+ ST_WORD(dir+32+DIR_FstClusHI, pcl >> 16);
+ 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_WORD(dir+DIR_FstClusLO, dcl); /* Table start cluster */
+ ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ FREE_BUF();
}
LEAVE_FF(dj.fs, res);
/*-----------------------------------------------------------------------*/
-/* Change File Attribute */
+/* Change Attribute */
/*-----------------------------------------------------------------------*/
FRESULT f_chmod (
- const XCHAR *path, /* Pointer to the file path */
+ const TCHAR *path, /* Pointer to the file path */
BYTE value, /* Attribute bits */
BYTE mask /* Attribute mask to change */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ 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) {
/*-----------------------------------------------------------------------*/
FRESULT f_utime (
- const XCHAR *path, /* Pointer to the file/directory name */
- const FILINFO *fno /* Pointer to the timestamp to be set */
+ const TCHAR *path, /* Pointer to the file/directory name */
+ const FILINFO *fno /* Pointer to the time stamp to be set */
)
{
FRESULT res;
DIR dj;
- NAMEBUF(sfn, lfn);
BYTE *dir;
+ DEF_NAMEBUF;
res = chk_mounted(&path, &dj.fs, 1);
if (res == FR_OK) {
- INITBUF(dj, sfn, lfn);
+ 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 */
+ if (!dir) { /* Root directory */
res = FR_INVALID_NAME;
- } else { /* File or sub-directory */
+ } else { /* File or sub-directory */
ST_WORD(dir+DIR_WrtTime, fno->ftime);
ST_WORD(dir+DIR_WrtDate, fno->fdate);
dj.fs->wflag = 1;
/*-----------------------------------------------------------------------*/
FRESULT f_rename (
- const XCHAR *path_old, /* Pointer to the old name */
- const XCHAR *path_new /* Pointer to the new name */
+ const TCHAR *path_old, /* Pointer to the old name */
+ const TCHAR *path_new /* Pointer to the new name */
)
{
FRESULT res;
- DIR dj_old, dj_new;
- NAMEBUF(sfn, lfn);
+ DIR djo, djn;
BYTE buf[21], *dir;
DWORD dw;
+ DEF_NAMEBUF;
- INITBUF(dj_old, sfn, lfn);
- res = chk_mounted(&path_old, &dj_old.fs, 1);
+ res = chk_mounted(&path_old, &djo.fs, 1);
if (res == FR_OK) {
- dj_new.fs = dj_old.fs;
- res = follow_path(&dj_old, path_old); /* Check old object */
- if (_FS_RPATH && res == FR_OK && (dj_old.fn[NS] & NS_DOT))
+ 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 (res != FR_OK) LEAVE_FF(dj_old.fs, res); /* The old object is not found */
-
- if (!dj_old.dir) LEAVE_FF(dj_old.fs, FR_NO_FILE); /* Is root dir? */
- mem_cpy(buf, dj_old.dir+DIR_Attr, 21); /* Save the object information */
-
- mem_cpy(&dj_new, &dj_old, sizeof(DIR));
- res = follow_path(&dj_new, path_new); /* Check new object */
- 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? */
- res = dir_register(&dj_new); /* Register the new object */
- if (res == FR_OK) {
- dir = dj_new.dir; /* Copy object information into new entry */
- mem_cpy(dir+13, buf+2, 19);
- dir[DIR_Attr] = buf[0] | AM_ARC;
- dj_old.fs->wflag = 1;
- if (dir[DIR_Attr] & AM_DIR) { /* Update .. entry in the directory if needed */
- dw = clust2sect(dj_new.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
- if (!dw) {
- res = FR_INT_ERR;
- } else {
- res = move_window(dj_new.fs, dw);
- dir = dj_new.fs->win+32;
- if (res == FR_OK && dir[1] == '.') {
- dw = (dj_new.fs->fs_type == FS_FAT32 && dj_new.sclust == dj_new.fs->dirbase) ? 0 : dj_new.sclust;
- ST_WORD(dir+DIR_FstClusLO, dw);
- ST_WORD(dir+DIR_FstClusHI, dw >> 16);
- dj_new.fs->wflag = 1;
+#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, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
+ if (!dw) {
+ res = FR_INT_ERR;
+ } else {
+ res = move_window(djn.fs, dw);
+ dir = djn.fs->win+32; /* .. entry */
+ if (res == FR_OK && dir[1] == '.') {
+ dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
+ ST_WORD(dir+DIR_FstClusLO, dw);
+ ST_WORD(dir+DIR_FstClusHI, dw >> 16);
+ djn.fs->wflag = 1;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&djo); /* Remove old entry */
+ if (res == FR_OK)
+ res = sync(djo.fs);
+ }
}
+/* End critical section */
}
}
- if (res == FR_OK) {
- res = dir_remove(&dj_old); /* Remove old entry */
- if (res == FR_OK)
- res = sync(dj_old.fs);
- }
}
+ FREE_BUF();
}
-
- LEAVE_FF(dj_old.fs, res);
+ LEAVE_FF(djo.fs, res);
}
#endif /* !_FS_READONLY */
/*-----------------------------------------------------------------------*/
-/* Forward data to the stream directly (Available on only _FS_TINY cfg) */
+/* Forward data to the stream directly (available on only tiny cfg) */
/*-----------------------------------------------------------------------*/
#if _USE_FORWARD && _FS_TINY
FRESULT res;
DWORD remain, clst, sect;
UINT rcnt;
+ BYTE csect;
- *bf = 0;
+ *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);
remain = fp->fsize - fp->fptr;
if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
- for ( ; btr && (*func)(NULL, 0); /* Repeat until all data transferred or stream becomes busy */
+ 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 (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
+ if (!csect) { /* On the cluster boundary? */
clst = (fp->fptr == 0) ? /* On the top of the file? */
fp->org_clust : get_fat(fp->fs, fp->curr_clust);
if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
fp->curr_clust = clst; /* Update current cluster */
- fp->csect = 0; /* Reset sector address in the cluster */
}
- fp->csect++; /* Next sector address in the cluster */
}
sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */
if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += fp->csect - 1;
+ sect += csect;
if (move_window(fp->fs, sect)) /* Move sector window */
ABORT(fp->fs, FR_DISK_ERR);
fp->dsect = sect;
/*-----------------------------------------------------------------------*/
/* Create File System on the Drive */
/*-----------------------------------------------------------------------*/
-#define N_ROOTDIR 512 /* Multiple of 32 and <= 2048 */
+#define N_ROOTDIR 512 /* Multiple of 32 */
#define N_FATS 1 /* 1 or 2 */
-#define MAX_SECTOR 131072000UL /* Maximum partition size */
-#define MIN_SECTOR 2000UL /* Minimum partition size */
FRESULT f_mkfs (
- BYTE drv, /* Logical drive number */
- BYTE partition, /* Partitioning rule 0:FDISK, 1:SFD */
- WORD allocsize /* Allocation unit size [bytes] */
+ BYTE drv, /* Logical drive number */
+ BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
+ UINT au /* Allocation unit size [bytes] */
)
{
- static const DWORD sstbl[] = { 2048000, 1024000, 512000, 256000, 128000, 64000, 32000, 16000, 8000, 4000, 0 };
- static const WORD cstbl[] = { 32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512 };
- BYTE fmt, m, *tbl;
- DWORD b_part, b_fat, b_dir, b_data; /* Area offset (LBA) */
- DWORD n_part, n_rsv, n_fat, n_dir; /* Area size */
- DWORD n_clst, d, n;
- WORD as;
+ static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
+ static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
+ BYTE fmt, md, *tbl;
+ DWORD n_clst, vs, n;
+ UINT as, i;
+ DWORD b_vol, b_fat, b_dir, b_data; /* Area offset (LBA) */
+ DWORD n_vol, n_rsv, n_fat, n_dir; /* Area size */
FATFS *fs;
DSTATUS stat;
- /* Check validity of the parameters */
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;
- if (partition >= 2) return FR_MKFS_ABORTED;
-
/* Check mounted drive and clear work area */
+ if (drv >= _DRIVES) return FR_INVALID_DRIVE;
fs = FatFs[drv];
if (!fs) return FR_NOT_ENABLED;
fs->fs_type = 0;
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
- || SS(fs) > _MAX_SS)
- return FR_MKFS_ABORTED;
+#if _MAX_SS != 512 /* Get disk sector size */
+ if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ return FR_DISK_ERR;
#endif
- if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)
- return FR_MKFS_ABORTED;
- if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;
- b_part = (!partition) ? 63 : 0; /* Boot sector */
- n_part -= b_part;
- for (d = 512; d <= 32768U && d != allocsize; d <<= 1) ; /* Check validity of the allocation unit size */
- if (d != allocsize) allocsize = 0;
- if (!allocsize) { /* Auto selection of cluster size */
- d = n_part;
- for (as = SS(fs); as > 512U; as >>= 1) d >>= 1;
- for (n = 0; d < sstbl[n]; n++) ;
- allocsize = cstbl[n];
- }
- if (allocsize < SS(fs)) allocsize = SS(fs);
-
- allocsize /= SS(fs); /* Number of sectors per cluster */
-
- /* Pre-compute number of clusters and FAT type */
- n_clst = n_part / allocsize;
+ if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
+ return FR_DISK_ERR;
+ b_vol = (sfd == 1) ? 0 : 63; /* Volume start sector */
+ n_vol -= b_vol;
+ if (au & (au - 1)) au = 0; /* Check validity of the allocation unit size */
+ if (!au) { /* AU auto selection */
+ vs = n_vol / (2000 / (SS(fs) / 512));
+ for (i = 0; vs < vst[i]; i++) ;
+ au = cst[i];
+ }
+ if (_MAX_SS != 512 && au < SS(fs)) au = SS(fs);
+ au /= SS(fs); /* Number of sectors per cluster */
+ if (au == 0) au = 1;
+ if (au > 128) au = 128;
+
+ /* Pre-compute number of clusters and FAT syb-type */
+ n_clst = n_vol / au;
fmt = FS_FAT12;
- if (n_clst >= 0xFF5) fmt = FS_FAT16;
- if (n_clst >= 0xFFF5) fmt = FS_FAT32;
+ if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
+ if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
/* Determine offset and size of FAT structure */
- switch (fmt) {
- case FS_FAT12:
- n_fat = ((n_clst * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);
- n_rsv = 1 + partition;
- n_dir = N_ROOTDIR * 32 / SS(fs);
- break;
- case FS_FAT16:
- n_fat = ((n_clst * 2) + 4 + SS(fs) - 1) / SS(fs);
- n_rsv = 1 + partition;
- n_dir = N_ROOTDIR * 32 / SS(fs);
- break;
- default:
+ if (fmt == FS_FAT32) {
n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
- n_rsv = 33 - partition;
+ 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 = N_ROOTDIR * 32UL / SS(fs);
}
- b_fat = b_part + n_rsv; /* FATs start sector */
- b_dir = b_fat + n_fat * N_FATS; /* Directory start sector */
- b_data = b_dir + n_dir; /* Data start sector */
+ 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) return FR_MKFS_ABORTED;
- n = (b_data + n - 1) & ~(n - 1);
- n_fat += (n - b_data) / N_FATS;
+ if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_DISK_ERR;
+ if (!n || n > 32768) return FR_MKFS_ABORTED;
+ n = (b_data + n - 1) & ~(n - 1); /* Next nearest boundary from current data start */
+ n = (n - b_data) / N_FATS;
+ if (fmt == FS_FAT32) { /* FAT32: Move FAT start */
+ n_rsv += n;
+ b_fat += n;
+ } else { /* FAT12/16: Expand FAT size */
+ n_fat += n;
+ }
/* b_dir and b_data are no longer used below */
- /* Determine number of cluster and final check of validity of the FAT type */
- n_clst = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;
- if ( (fmt == FS_FAT16 && n_clst < 0xFF5)
- || (fmt == FS_FAT32 && n_clst < 0xFFF5))
+ /* Determine number of cluster 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 needed */
- if (!partition) {
- DWORD n_disk = b_part + n_part;
+ /* Create partition table if required */
+ if (sfd == 1) {
+ md = 0xF0;
+ } else {
+ DWORD n_disk = b_vol + n_vol;
mem_set(fs->win, 0, SS(fs));
tbl = fs->win+MBR_Table;
}
tbl[5] = 254;
if (fmt != FS_FAT32) /* System ID */
- tbl[4] = (n_part < 0x10000) ? 0x04 : 0x06;
+ 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_part); /* Partition size in LBA */
+ ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
ST_WORD(tbl+64, 0xAA55); /* Signature */
if (disk_write(drv, fs->win, 0, 1) != RES_OK)
return FR_DISK_ERR;
- partition = 0xF8;
- } else {
- partition = 0xF0;
+ md = 0xF8;
}
- /* Create boot record */
+ /* Create VBR */
tbl = fs->win; /* Clear buffer */
mem_set(tbl, 0, SS(fs));
ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */
- ST_WORD(tbl+BPB_BytsPerSec, SS(fs)); /* Sector size */
- tbl[BPB_SecPerClus] = (BYTE)allocsize; /* Sectors per cluster */
+ as = SS(fs); /* Sector size */
+ ST_WORD(tbl+BPB_BytsPerSec, as);
+ tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
- ST_WORD(tbl+BPB_RootEntCnt, SS(fs) / 32 * n_dir); /* Number of rootdir entries */
- if (n_part < 0x10000) { /* Number of total sectors */
- ST_WORD(tbl+BPB_TotSec16, n_part);
+ as = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
+ ST_WORD(tbl+BPB_RootEntCnt, as);
+ if (n_vol < 0x10000) { /* Number of total sectors */
+ ST_WORD(tbl+BPB_TotSec16, n_vol);
} else {
- ST_DWORD(tbl+BPB_TotSec32, n_part);
+ ST_DWORD(tbl+BPB_TotSec32, n_vol);
}
- tbl[BPB_Media] = partition; /* Media descripter */
+ 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_part); /* Hidden sectors */
- n = get_fattime(); /* Use current time as a VSN */
- if (fmt != FS_FAT32) {
- ST_DWORD(tbl+BS_VolID, n); /* Volume serial number */
- ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of secters 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 lavel, FAT signature */
- } else {
- ST_DWORD(tbl+BS_VolID32, n); /* Volume serial number */
- ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of secters per FAT */
- ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory cluster (2) */
- ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (bs+1) */
- ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (bs+6) */
+ 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 lavel, FAT signature */
- }
- ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature */
- if (SS(fs) > 512U) {
- ST_WORD(tbl+SS(fs)-2, 0xAA55);
+ 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 */
}
- if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)
+ ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
+ if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Original (VBR) */
return FR_DISK_ERR;
- if (fmt == FS_FAT32)
- disk_write(drv, tbl, b_part+6, 1);
+ if (fmt == FS_FAT32) /* Backup (VBR+6) */
+ disk_write(drv, tbl, b_vol + 6, 1);
/* Initialize FAT area */
- for (m = 0; m < N_FATS; m++) {
- mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
+ for (i = 0; i < N_FATS; i++) {
+ 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;
- n |= partition;
- ST_DWORD(tbl, n); /* Reserve cluster #0-1 (FAT12/16) */
+ n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
} else {
- ST_DWORD(tbl+0, 0xFFFFFFF8); /* Reserve cluster #0-1 (FAT32) */
- ST_DWORD(tbl+4, 0xFFFFFFFF);
+ n |= 0x0FFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
+ ST_DWORD(tbl+4, 0x0FFFFFFF);
ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
}
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
return FR_DISK_ERR;
- mem_set(tbl, 0, SS(fs)); /* Following FAT entries are filled by zero */
- for (n = 1; n < n_fat; n++) {
+ mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
+ for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector write */
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
return FR_DISK_ERR;
}
}
- /* Initialize Root directory */
- m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);
- do {
+ /* Initialize root directory */
+ n = (fmt == FS_FAT32) ? as : n_dir;
+ while (n--) {
if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
return FR_DISK_ERR;
- } while (--m);
+ }
/* Create FSInfo record if needed */
if (fmt == FS_FAT32) {
ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
- disk_write(drv, tbl, b_part+1, 1);
- disk_write(drv, tbl, b_part+7, 1);
+ disk_write(drv, tbl, b_vol + 1, 1); /* Original (VBR+1) */
+ disk_write(drv, tbl, b_vol + 7, 1); /* Backup (VBR+7) */
}
- return (disk_ioctl(drv, CTRL_SYNC, (void*)NULL) == RES_OK) ? FR_OK : FR_DISK_ERR;
+ return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
}
#endif /* _USE_MKFS && !_FS_READONLY */
/*-----------------------------------------------------------------------*/
/* Get a string from the file */
/*-----------------------------------------------------------------------*/
-char* f_gets (
- char* buff, /* Pointer to the string buffer to read */
- int len, /* Size of string buffer */
- FIL* fil /* Pointer to the file object */
+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 i = 0;
- char *p = buff;
+ int n = 0;
+ TCHAR c, *p = buff;
+ BYTE s[2];
UINT rc;
- while (i < len - 1) { /* Read bytes until buffer gets filled */
- f_read(fil, p, 1, &rc);
- if (rc != 1) break; /* Break when no data to read */
+ 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 (*p == '\r') continue; /* Strip '\r' */
+ if (c == '\r') continue; /* Strip '\r' */
#endif
- i++;
- if (*p++ == '\n') break; /* Break when reached end of line */
+ *p++ = c;
+ n++;
+ if (c == '\n') break; /* Break on EOL */
}
*p = 0;
- return i ? buff : NULL; /* When no data read (eof or error), return with error. */
+ return n ? buff : 0; /* When no data read (eof or error), return with error. */
}
/* Put a character to the file */
/*-----------------------------------------------------------------------*/
int f_putc (
- int chr, /* A character to be output */
- FIL* fil /* Ponter to the file object */
+ TCHAR c, /* A character to be output */
+ FIL* fil /* Pointer to the file object */
)
{
- UINT bw;
- char c;
+ UINT bw, btw;
+ BYTE s[3];
#if _USE_STRFUNC >= 2
- if (chr == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
+ if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
#endif
- if (!fil) { /* Special value may be used to switch the destination to any other device */
- /* put_console(chr); */
- return chr;
- }
- c = (char)chr;
- f_write(fil, &c, 1, &bw); /* Write a byte to the file */
- return bw ? chr : EOF; /* Return the result */
+
+#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 char* str, /* Pointer to the string to be output */
+ const TCHAR* str, /* Pointer to the string to be output */
FIL* fil /* Pointer to the file object */
)
{
/*-----------------------------------------------------------------------*/
int f_printf (
FIL* fil, /* Pointer to the file object */
- const char* str, /* Pointer to the format string */
+ const TCHAR* str, /* Pointer to the format string */
... /* Optional arguments... */
)
{
va_list arp;
- UCHAR c, f, r;
+ BYTE f, r;
+ UINT i, w;
ULONG val;
- char s[16];
- int i, w, res, cc;
+ TCHAR c, d, s[16];
+ 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 cahracter */
+ if (c != '%') { /* Non escape character */
cc = f_putc(c, fil);
if (cc != EOF) cc = 1;
continue;
if (c == '0') { /* Flag: '0' padding */
f = 1; c = *str++;
}
- while (c >= '0' && c <= '9') { /* Precision */
- w = w * 10 + (c - '0');
+ while (IsDigit(c)) { /* Precision */
+ w = w * 10 + c - '0';
c = *str++;
}
- if (c == 'l') { /* Prefix: Size is long int */
+ if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
f |= 2; c = *str++;
}
- if (c == 's') { /* Type is string */
- cc = f_puts(va_arg(arp, char*), fil);
- continue;
- }
- if (c == 'c') { /* Type is character */
- cc = f_putc(va_arg(arp, int), fil);
- if (cc != EOF) cc = 1;
- continue;
- }
- r = 0;
- if (c == 'd') r = 10; /* Type is signed decimal */
- if (c == 'u') r = 10; /* Type is unsigned decimal */
- if (c == 'X') r = 16; /* Type is unsigned hexdecimal */
- if (r == 0) break; /* Unknown type */
- if (f & 2) { /* Get the value */
- val = (ULONG)va_arg(arp, long);
- } else {
- val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);
- }
- /* Put numeral string */
- if (c == 'd') {
- if (val & 0x80000000) {
- val = 0 - val;
- f |= 4;
+ if (!c) break;
+ d = c;
+ if (IsLower(d)) d -= 0x20;
+ switch (d) { /* Type is... */
+ case 'S' : /* String */
+ cc = f_puts(va_arg(arp, TCHAR*), fil); continue;
+ 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 */
+ cc = f_putc(c, fil); continue;
+ }
+
+ /* Get an argument */
+ val = (f & 2) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
+ if (d == 'D' && (val & 0x80000000)) {
+ val = 0 - val;
+ f |= 4;
+ }
+ /* Put it in numeral string */
+ i = 0;
+ do {
+ d = (TCHAR)(val % r); val /= r;
+ if (d > 9) {
+ d += 7;
+ if (c == 'x') d += 0x20;
}
+ s[i++] = d + '0';
+ } while (val && i < sizeof(s) / sizeof(s[0]));
+ if (f & 4) s[i++] = '-';
+ cc = 0;
+ while (i < w-- && cc != EOF) {
+ cc = f_putc((TCHAR)((f & 1) ? '0' : ' '), fil);
+ res++;
}
- i = sizeof(s) - 1; s[i] = 0;
do {
- c = (UCHAR)(val % r + '0');
- if (c > '9') c += 7;
- s[--i] = c;
- val /= r;
- } while (i && val);
- if (i && (f & 4)) s[--i] = '-';
- w = sizeof(s) - 1 - w;
- while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';
- cc = f_puts(&s[i], fil);
+ cc = f_putc(s[--i], fil);
+ res++;
+ } while (i && cc != EOF);
+ if (cc != EOF) cc = 0;
}
va_end(arp);
/*---------------------------------------------------------------------------/
-/ FatFs - FAT file system module include file R0.07e (C)ChaN, 2010
+/ FatFs - FAT file system module include file R0.08 (C)ChaN, 2010
/----------------------------------------------------------------------------/
/ 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
/ * No restriction on use. You can use, modify and redistribute it for
/ personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
/ * Redistributions of source code must retain the above copyright notice.
+/
/----------------------------------------------------------------------------*/
#ifndef _FATFS
-#define _FATFS 0x007E
+#define _FATFS 8085 /* Revision ID */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
#include "integer.h" /* Basic integer types */
#include "ffconf.h" /* FatFs configuration options */
-#if _FATFS != _FFCONFIG
+#if _FATFS != _FFCONF
#error Wrong configuration file (ffconf.h).
#endif
-/* Character code support macros */
-
-#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
-#define IsLower(c) (((c)>='a')&&((c)<='z'))
-
-#if _DF1S /* DBCS configuration */
-
-#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 /* SBCS configuration */
-
-#define IsDBCS1(c) 0
-#define IsDBCS2(c) 0
-
-#endif /* _DF1S */
-
-
-
-/* Definitions corresponds to multi partition */
+/* Definitions corresponds to volume management */
#if _MULTI_PARTITION /* Multiple partition configuration */
-
-typedef struct _PARTITION {
+#define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */
+#define LD2PT(drv) (Drives[drv].pt) /* Get partition# */
+typedef struct {
BYTE pd; /* Physical drive# */
BYTE pt; /* Partition # (0-3) */
} PARTITION;
-
-extern
-const PARTITION Drives[]; /* Logical drive# to physical location conversion table */
-#define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */
-#define LD2PT(drv) (Drives[drv].pt) /* Get partition# */
+extern const PARTITION Drives[]; /* Logical drive# to physical location conversion table */
#else /* Single partition configuration */
-
#define LD2PD(drv) (drv) /* Physical drive# is equal to the logical drive# */
#define LD2PT(drv) 0 /* Always mounts the 1st partition */
-/* Definitions corresponds to multiple sector size */
+/* Type of path name strings on FatFs API */
-#if _MAX_SS == 512 /* Single sector size */
-#define SS(fs) 512U
-
-#elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */
-#define SS(fs) ((fs)->s_size)
+#if _LFN_UNICODE /* Unicode string */
+#if !_USE_LFN
+#error _LFN_UNICODE must be 0 in non-LFN cfg.
+#endif
+#ifndef _INC_TCHAR
+typedef WCHAR TCHAR;
+#define _T(x) L ## x
+#define _TEXT(x) L ## x
+#endif
-#else
-#error Sector size must be 512, 1024, 2048 or 4096.
+#else /* ANSI/OEM string */
+#ifndef _INC_TCHAR
+typedef char TCHAR;
+#define _T(x) x
+#define _TEXT(x) x
+#endif
#endif
-/* Type of file name on FatFs API */
+/* Definitions corresponds to file shareing feature */
-#if _LFN_UNICODE && _USE_LFN
-typedef WCHAR XCHAR; /* Unicode */
-#else
-typedef char XCHAR; /* SBCS, DBCS */
+#if _FS_SHARE
+#if _FS_READONLY
+#error _FS_SHARE must be 0 on R/O cfg.
+#endif
+typedef struct {
+ DWORD clu; /* File ID 1, directory */
+ WORD idx; /* File ID 2, index in the directory */
+ WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:in write open */
+} FILESEM;
#endif
-/* File system object structure */
+/* File system object structure (FATFS) */
-typedef struct _FATFS_ {
- BYTE fs_type; /* FAT sub type */
- BYTE drive; /* Physical drive number */
- BYTE csize; /* Number of sectors per cluster */
- BYTE n_fats; /* Number of FAT copies */
- BYTE wflag; /* win[] dirty flag (1:must be written back) */
- BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
- WORD id; /* File system mount ID */
- WORD n_rootdir; /* Number of root directory entries (0 on FAT32) */
-#if _FS_REENTRANT
- _SYNC_t sobj; /* Identifier of sync object */
-#endif
+typedef struct {
+ BYTE fs_type; /* FAT sub-type (0:Not mounted) */
+ BYTE drv; /* Physical drive number */
+ BYTE csize; /* Sectors per cluster (1,2,4...128) */
+ BYTE n_fats; /* Number of FAT copies (1,2) */
+ BYTE wflag; /* win[] dirty flag (1:must be written back) */
+ BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
+ WORD id; /* File system mount ID */
+ WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
#if _MAX_SS != 512
- WORD s_size; /* Sector size */
+ WORD ssize; /* Bytes per sector (512,1024,2048,4096) */
+#endif
+#if _FS_REENTRANT
+ _SYNC_t sobj; /* Identifier of sync object */
#endif
#if !_FS_READONLY
- DWORD last_clust; /* Last allocated cluster */
- DWORD free_clust; /* Number of free clusters */
- DWORD fsi_sector; /* fsinfo sector */
+ DWORD last_clust; /* Last allocated cluster */
+ DWORD free_clust; /* Number of free clusters */
+ DWORD fsi_sector; /* fsinfo sector (FAT32) */
#endif
#if _FS_RPATH
- DWORD cdir; /* Current directory (0:root)*/
-#endif
- DWORD sects_fat; /* Sectors per fat */
- DWORD max_clust; /* Maximum cluster# + 1. Number of clusters is max_clust - 2 */
- DWORD fatbase; /* FAT start sector */
- DWORD dirbase; /* Root directory start sector (Cluster# on FAT32) */
- DWORD database; /* Data start sector */
- DWORD winsect; /* Current sector appearing in the win[] */
- BYTE win[_MAX_SS];/* Disk access window for Directory/FAT */
+ DWORD cdir; /* Current directory start cluster (0:root) */
+#endif
+ DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
+ DWORD fsize; /* Sectors per FAT */
+ DWORD fatbase; /* FAT start sector */
+ DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
+ DWORD database; /* Data start sector */
+ DWORD winsect; /* Current sector appearing in the win[] */
+ BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
+#if _FS_SHARE
+ FILESEM flsem[_FS_SHARE]; /* File lock semaphores */
+#endif
} FATFS;
-/* Directory object structure */
+/* File object structure (FIL) */
-typedef struct _DIR_ {
- FATFS* fs; /* Pointer to the owner file system object */
- WORD id; /* Owner file system mount ID */
- WORD index; /* Current read/write index number */
- DWORD sclust; /* Table start cluster (0:Static table) */
- DWORD clust; /* Current cluster */
- DWORD sect; /* Current sector */
- BYTE* dir; /* Pointer to the current SFN entry in the win[] */
- BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
-#if _USE_LFN
- WCHAR* lfn; /* Pointer to the LFN working buffer */
- WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
+typedef struct {
+ FATFS* fs; /* Pointer to the owner file system object */
+ WORD id; /* Owner file system mount ID */
+ BYTE flag; /* File status flags */
+ BYTE pad1;
+ DWORD fptr; /* File read/write pointer */
+ DWORD fsize; /* File size */
+ DWORD org_clust; /* File start cluster (0 when fsize==0) */
+ DWORD curr_clust; /* Current cluster */
+ DWORD dsect; /* Current data sector */
+#if !_FS_READONLY
+ DWORD dir_sect; /* Sector containing the directory entry */
+ BYTE* dir_ptr; /* Ponter to the directory entry in the window */
#endif
-} DIR;
+#if _USE_FASTSEEK
+ DWORD* cltbl; /* Pointer to the cluster link map table */
+#endif
+#if _FS_SHARE
+ UINT lockid; /* File lock ID */
+#endif
+#if !_FS_TINY
+ BYTE buf[_MAX_SS]; /* File data read/write buffer */
+#endif
+} FIL;
-/* File object structure */
+/* Directory object structure (DIR) */
-typedef struct _FIL_ {
- FATFS* fs; /* Pointer to the owner file system object */
- WORD id; /* Owner file system mount ID */
- BYTE flag; /* File status flags */
- BYTE csect; /* Sector address in the cluster */
- DWORD fptr; /* File R/W pointer */
- DWORD fsize; /* File size */
- DWORD org_clust; /* File start cluster */
- DWORD curr_clust; /* Current cluster */
- DWORD dsect; /* Current data sector */
-#if !_FS_READONLY
- DWORD dir_sect; /* Sector containing the directory entry */
- BYTE* dir_ptr; /* Ponter to the directory entry in the window */
-#endif
-#if !_FS_TINY
- BYTE buf[_MAX_SS];/* File R/W buffer */
+typedef struct {
+ FATFS* fs; /* Pointer to the owner file system object */
+ WORD id; /* Owner file system mount ID */
+ WORD index; /* Current read/write index number */
+ DWORD sclust; /* Table start cluster (0:Root dir) */
+ DWORD clust; /* Current cluster */
+ DWORD sect; /* Current sector */
+ BYTE* dir; /* Pointer to the current SFN entry in the win[] */
+ BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
+#if _USE_LFN
+ WCHAR* lfn; /* Pointer to the LFN working buffer */
+ WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
#endif
-} FIL;
+} DIR;
-/* File status structure */
+/* File status structure (FILINFO) */
-typedef struct _FILINFO_ {
- DWORD fsize; /* File size */
- WORD fdate; /* Last modified date */
- WORD ftime; /* Last modified time */
- BYTE fattrib; /* Attribute */
- char fname[13]; /* Short file name (8.3 format) */
+typedef struct {
+ DWORD fsize; /* File size */
+ WORD fdate; /* Last modified date */
+ WORD ftime; /* Last modified time */
+ BYTE fattrib; /* Attribute */
+ TCHAR fname[13]; /* Short file name (8.3 format) */
#if _USE_LFN
- XCHAR* lfname; /* Pointer to the LFN buffer */
- int lfsize; /* Size of LFN buffer [chrs] */
+ TCHAR* lfname; /* Pointer to the LFN buffer */
+ int lfsize; /* Size of LFN buffer [chrs] */
#endif
} FILINFO;
/* File function return code (FRESULT) */
typedef enum {
- FR_OK = 0, /* 0 */
- FR_DISK_ERR, /* 1 */
- FR_INT_ERR, /* 2 */
- FR_NOT_READY, /* 3 */
- FR_NO_FILE, /* 4 */
- FR_NO_PATH, /* 5 */
- FR_INVALID_NAME, /* 6 */
- FR_DENIED, /* 7 */
- FR_EXIST, /* 8 */
- FR_INVALID_OBJECT, /* 9 */
- FR_WRITE_PROTECTED, /* 10 */
- FR_INVALID_DRIVE, /* 11 */
- FR_NOT_ENABLED, /* 12 */
- FR_NO_FILESYSTEM, /* 13 */
- FR_MKFS_ABORTED, /* 14 */
- FR_TIMEOUT /* 15 */
+ FR_OK = 0, /* (0) Succeeded */
+ FR_DISK_ERR, /* (1) A hard error occured in the low level disk I/O layer */
+ FR_INT_ERR, /* (2) Assertion failed */
+ FR_NOT_READY, /* (3) The physical drive cannot work */
+ FR_NO_FILE, /* (4) Could not find the file */
+ FR_NO_PATH, /* (5) Could not find the path */
+ FR_INVALID_NAME, /* (6) The path name format is invalid */
+ FR_DENIED, /* (7) Acces denied due to prohibited access or directory full */
+ FR_EXIST, /* (8) Acces denied due to prohibited access */
+ FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
+ FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
+ FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
+ FR_NOT_ENABLED, /* (12) The volume has no work area */
+ FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume on the physical drive */
+ FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
+ FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
+ FR_LOCKED, /* (16) The operation is rejected according to the file shareing policy */
+ FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
+ FR_TOO_MANY_OPEN_FILES /* (18) Number of open files > _FS_SHARE */
} FRESULT;
/* FatFs module application interface */
FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
-FRESULT f_open (FIL*, const XCHAR*, BYTE); /* Open or create a file */
+FRESULT f_open (FIL*, const TCHAR*, BYTE); /* Open or create a file */
FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */
-FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */
FRESULT f_close (FIL*); /* Close an open file object */
-FRESULT f_opendir (DIR*, const XCHAR*); /* Open an existing directory */
+FRESULT f_opendir (DIR*, const TCHAR*); /* Open an existing directory */
FRESULT f_readdir (DIR*, FILINFO*); /* Read a directory item */
-FRESULT f_stat (const XCHAR*, FILINFO*); /* Get file status */
-FRESULT f_getfree (const XCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
+FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
+#if !_FS_READONLY
+FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
+FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
FRESULT f_truncate (FIL*); /* Truncate file */
FRESULT f_sync (FIL*); /* Flush cached data of a writing file */
-FRESULT f_unlink (const XCHAR*); /* Delete an existing file or directory */
-FRESULT f_mkdir (const XCHAR*); /* Create a new directory */
-FRESULT f_chmod (const XCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
-FRESULT f_utime (const XCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
-FRESULT f_rename (const XCHAR*, const XCHAR*); /* Rename/Move a file or directory */
+FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
+FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
+FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
+FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
+FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
+#endif
+#if _USE_FORWARD
FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
-FRESULT f_mkfs (BYTE, BYTE, WORD); /* Create a file system on the drive */
-FRESULT f_chdir (const XCHAR*); /* Change current directory */
+#endif
+#if _USE_MKFS
+FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
+#endif
+#if _FS_RPATH
+FRESULT f_chdir (const TCHAR*); /* Change current directory */
FRESULT f_chdrive (BYTE); /* Change current drive */
-
+#endif
#if _USE_STRFUNC
-int f_putc (int, FIL*); /* Put a character to the file */
-int f_puts (const char*, FIL*); /* Put a string to the file */
-int f_printf (FIL*, const char*, ...); /* Put a formatted string to the file */
-char* f_gets (char*, int, FIL*); /* Get a string from the file */
+int f_putc (TCHAR, FIL*); /* Put a character to the file */
+int f_puts (const TCHAR*, FIL*); /* Put a string to the file */
+int f_printf (FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
+TCHAR* f_gets (TCHAR*, int, FIL*); /* Get a string from the file */
#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
#define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
#ifndef EOF
-#define EOF -1
+#define EOF (-1)
#endif
#endif
/*--------------------------------------------------------------*/
-/* User defined functions */
+/* Additional user defined functions */
-/* Real time clock */
+/* RTC function */
#if !_FS_READONLY
-DWORD get_fattime (void); /* 31-25: Year(0-127 org.1980), 24-21: Month(1-12), 20-16: Day(1-31) */
- /* 15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) */
+DWORD get_fattime (void);
#endif
-/* Unicode - OEM code conversion */
-#if _USE_LFN
-WCHAR ff_convert (WCHAR, UINT);
-WCHAR ff_wtoupper (WCHAR);
+/* Unicode support functions */
+#if _USE_LFN /* Unicode - OEM code conversion */
+WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
+WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
+#if _USE_LFN == 3 /* Memory functions */
+void* ff_memalloc (UINT); /* Allocate memory block */
+void ff_memfree (void*); /* Free memory block */
+#endif
#endif
/* Sync functions */
#if _FS_REENTRANT
-BOOL ff_cre_syncobj(BYTE, _SYNC_t*);
-BOOL ff_del_syncobj(_SYNC_t);
-BOOL ff_req_grant(_SYNC_t);
-void ff_rel_grant(_SYNC_t);
+int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
+int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
+int ff_req_grant (_SYNC_t); /* Lock sync object */
+void ff_rel_grant (_SYNC_t); /* Unlock sync object */
#endif
+
/*--------------------------------------------------------------*/
/* Flags and offset address */
#define FA_READ 0x01
#define FA_OPEN_EXISTING 0x00
-#if _FS_READONLY == 0
+#define FA__ERROR 0x80
+
+#if !_FS_READONLY
#define FA_WRITE 0x02
#define FA_CREATE_NEW 0x04
#define FA_CREATE_ALWAYS 0x08
#define FA__WRITTEN 0x20
#define FA__DIRTY 0x40
#endif
-#define FA__ERROR 0x80
/* FAT sub type (FATFS.fs_type) */
#define AM_MASK 0x3F /* Mask of defined bits */
-/* FatFs refers the members in the FAT structures with byte offset instead
-/ of structure member because there are incompatibility of the packing option
+/* Fast seek function */
+#define CREATE_LINKMAP 0xFFFFFFFF
+
+
+/* FatFs refers the members in the FAT structures with byte offset instead of
+/ structure member because there are incompatibility of the packing option
/ between various compilers. */
#define BS_jmpBoot 0
#define ST_DWORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *(BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8); *(BYTE*)((ptr)+2)=(BYTE)((DWORD)(val)>>16); *(BYTE*)((ptr)+3)=(BYTE)((DWORD)(val)>>24)
#endif
+#ifdef __cplusplus
+}
+#endif
#endif /* _FATFS */
/*---------------------------------------------------------------------------/
-/ FatFs - FAT file system module configuration file R0.07e (C)ChaN, 2010
+/ FatFs - FAT file system module configuration file R0.08 (C)ChaN, 2010
/----------------------------------------------------------------------------/
/
/ CAUTION! Do not forget to make clean the project after any changes to
/ the configuration options.
/
/----------------------------------------------------------------------------*/
-#ifndef _FFCONFIG
-#define _FFCONFIG 0x007E
+#ifndef _FFCONF
+#define _FFCONF 8085 /* Revision ID */
/*---------------------------------------------------------------------------/
/ Function and Buffer Configurations
/----------------------------------------------------------------------------*/
-#define _FS_TINY 1 /* 0 or 1 */
+#define _FS_TINY 1 /* 0:Normal or 1:Tiny */
/* When _FS_TINY is set to 1, FatFs uses the sector buffer in the file system
/ object instead of the sector buffer in the individual file object for file
/ data transfer. This reduces memory consumption 512 bytes each file object. */
-#define _FS_READONLY 1 /* 0 or 1 */
+#define _FS_READONLY 1 /* 0:Read/Write or 1:Read only */
/* Setting _FS_READONLY to 1 defines read only configuration. This removes
/ writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename,
/ f_truncate and useless f_getfree. */
/ 3: f_lseek is removed in addition to level 2. */
-#define _USE_STRFUNC 0 /* 0, 1 or 2 */
+#define _USE_STRFUNC 0 /* 0:Disable or 1/2:Enable */
/* To enable string functions, set _USE_STRFUNC to 1 or 2. */
-#define _USE_MKFS 0 /* 0 or 1 */
+#define _USE_MKFS 0 /* 0:Disable or 1:Enable */
/* To enable f_mkfs function, set _USE_MKFS to 1 and set _FS_READONLY to 0 */
-#define _USE_FORWARD 0 /* 0 or 1 */
+#define _USE_FORWARD 0 /* 0:Disable or 1:Enable */
/* To enable f_forward function, set _USE_FORWARD to 1 and set _FS_TINY to 1. */
+#define _USE_FASTSEEK 0 /* 0:Disable or 1:Enable */
+/* To enable fast seek feature, set _USE_FASTSEEK to 1. */
+
+
/*---------------------------------------------------------------------------/
/ Locale and Namespace Configurations
*/
-#define _USE_LFN 0 /* 0, 1 or 2 */
+#define _USE_LFN 0 /* 0 to 3 */
#define _MAX_LFN 255 /* Maximum LFN length to handle (12 to 255) */
/* The _USE_LFN option switches the LFN support.
/
/ 0: Disable LFN. _MAX_LFN and _LFN_UNICODE have no effect.
/ 1: Enable LFN with static working buffer on the bss. NOT REENTRANT.
/ 2: Enable LFN with dynamic working buffer on the STACK.
+/ 3: Enable LFN with dynamic working buffer on the HEAP.
/
/ The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes. When enable LFN,
-/ two Unicode handling functions ff_convert() and ff_wtoupper() must be added
-/ to the project. */
+/ Unicode handling functions ff_convert() and ff_wtoupper() must be added
+/ to the project. When enable to use heap, memory control functions
+/ ff_memalloc() and ff_memfree() must be added to the project. */
-#define _LFN_UNICODE 0 /* 0 or 1 */
+#define _LFN_UNICODE 0 /* 0:ANSI/OEM or 1:Unicode */
/* To switch the character code set on FatFs API to Unicode,
-/ enable LFN feature and set _LFN_UNICODE to 1.
-*/
+/ enable LFN feature and set _LFN_UNICODE to 1. */
-#define _FS_RPATH 0 /* 0 or 1 */
+#define _FS_RPATH 0 /* 0:Disable or 1:Enable */
/* When _FS_RPATH is set to 1, relative path feature is enabled and f_chdir,
/ f_chdrive function are available.
/ Note that output of the f_readdir fnction is affected by this option. */
/ to the disk_ioctl function. */
-#define _MULTI_PARTITION 0 /* 0 or 1 */
+#define _MULTI_PARTITION 0 /* 0:Single parition or 1:Multiple partition */
/* When _MULTI_PARTITION is set to 0, each volume is bound to the same physical
/ drive number and can mount only first primaly partition. When it is set to 1,
/ each volume is tied to the partitions listed in Drives[]. */
/----------------------------------------------------------------------------*/
#define _WORD_ACCESS 1 /* 0 or 1 */
-/* The _WORD_ACCESS option defines which access method is used to the word
-/ data on the FAT volume.
+/* Set 0 first and it is always compatible with all platforms. The _WORD_ACCESS
+/ option defines which access method is used to the word data on the FAT volume.
/
-/ 0: Byte-by-byte access. Always compatible with all platforms.
+/ 0: Byte-by-byte access.
/ 1: Word access. Do not choose this unless following condition is met.
/
-/ When the byte order on the memory is big-endian or address miss-aligned
-/ word access results incorrect behavior, the _WORD_ACCESS must be set to 0.
+/ When the byte order on the memory is big-endian or address miss-aligned word
+/ access results incorrect behavior, the _WORD_ACCESS must be set to 0.
/ If it is not the case, the value can also be set to 1 to improve the
/ performance and code size. */
-#define _FS_REENTRANT 0 /* 0 or 1 */
+#define _FS_REENTRANT 0 /* 0:Disable or 1:Enable */
#define _FS_TIMEOUT 1000 /* Timeout period in unit of time ticks */
#define _SYNC_t HANDLE /* O/S dependent type of sync object. e.g. HANDLE, OS_EVENT*, ID and etc.. */
+/* Include a header file here to define O/S system calls */
+/* #include <windows.h>, <ucos_ii.h.h>, <semphr.h> or ohters. */
+
/* The _FS_REENTRANT option switches the reentrancy of the FatFs module.
/
/ 0: Disable reentrancy. _SYNC_t and _FS_TIMEOUT have no effect.
/ function must be added to the project. */
+#define _FS_SHARE 0 /* 0:Disable or >=1:Enable */
+/* To enable file shareing feature, set _FS_SHARE to >= 1 and also user
+ provided memory handlers, ff_memalloc and ff_memfree function must be
+ added to the project. The value defines number of files can be opened
+ per volume. */
+
+
#endif /* _FFCONFIG */
/*-------------------------------------------*/
#ifndef _INTEGER
+#define _INTEGER
+
+#ifdef _WIN32 /* FatFs development platform */
-#if 0
#include <windows.h>
-#else
+#include <tchar.h>
+
+#else /* Embedded platform */
/* These types must be 16-bit, 32-bit or larger integer */
typedef int INT;
typedef unsigned int UINT;
/* These types must be 8-bit integer */
-typedef signed char CHAR;
+typedef char CHAR;
typedef unsigned char UCHAR;
typedef unsigned char BYTE;
typedef unsigned long ULONG;
typedef unsigned long DWORD;
-/* Boolean type */
-typedef enum { FALSE = 0, TRUE } BOOL;
+typedef unsigned char BOOL;
#endif
-#define _INTEGER
#endif
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