/**
* @public
* @brief Moves a file or directory from source to destination.
*
* @param pIoman The FF_IOMAN object pointer.
* @param szSourceFile String of the source file to be moved or renamed.
* @param szDestinationFile String of the destination file to where the source should be moved or renamed.
*
* @return FF_ERR_NONE on success.
* @return FF_ERR_FILE_DESTINATION_EXISTS if the destination file exists.
* @return FF_ERR_FILE_COULD_NOT_CREATE_DIRENT if dirent creation failed (fatal error!).
* @return FF_ERR_FILE_DIR_NOT_FOUND if destination directory was not found.
* @return FF_ERR_FILE_SOURCE_NOT_FOUND if the source file was not found.
*
**/
FF_ERROR FF_Move(FF_IOMAN *pIoman, const FF_T_INT8 *szSourceFile, const FF_T_INT8 *szDestinationFile) {
FF_ERROR Error;
FF_FILE *pSrcFile, *pDestFile;
FF_DIRENT MyFile;
FF_T_UINT8 EntryBuffer[32];
FF_T_UINT16 i;
FF_T_UINT32 DirCluster;
if(!pIoman) {
return FF_ERR_NULL_POINTER;
}
// Check destination file doesn't exist!
pDestFile = FF_Open(pIoman, szDestinationFile, FF_MODE_READ, &Error);
if(pDestFile || (Error == FF_ERR_FILE_OBJECT_IS_A_DIR)) {
FF_Close(pDestFile);
return FF_ERR_FILE_DESTINATION_EXISTS; // YES -- FAIL
}
pSrcFile = FF_Open(pIoman, szSourceFile, FF_MODE_READ, &Error);
if(Error == FF_ERR_FILE_OBJECT_IS_A_DIR) {
// Open a directory for moving!
pSrcFile = FF_Open(pIoman, szSourceFile, FF_MODE_DIR, &Error);
}
if(pSrcFile) {
// Create the new dirent.
FF_FetchEntry(pIoman, pSrcFile->DirCluster, pSrcFile->DirEntry, EntryBuffer);
MyFile.Attrib = FF_getChar(EntryBuffer, (FF_T_UINT16)(FF_FAT_DIRENT_ATTRIB));
MyFile.Filesize = pSrcFile->Filesize;
MyFile.ObjectCluster = pSrcFile->ObjectCluster;
MyFile.CurrentItem = 0;
i = (FF_T_UINT16) strlen(szDestinationFile);
while(i != 0) {
if(szDestinationFile[i] == '\\' || szDestinationFile[i] == '/') {
break;
}
i--;
}
strncpy(MyFile.FileName, (szDestinationFile + i + 1), FF_MAX_FILENAME);
if(i == 0) {
i = 1;
}
DirCluster = FF_FindDir(pIoman, szDestinationFile, i);
if(DirCluster) {
// Destination Dir was found, we can now create the new entry.
if(FF_CreateDirent(pIoman, DirCluster, &MyFile)) {
FF_Close(pSrcFile);
return FF_ERR_FILE_COULD_NOT_CREATE_DIRENT; // FAILED
}
// Edit the Directory Entry! (So it appears as deleted);
FF_lockDIR(pIoman);
{
FF_RmLFNs(pIoman, pSrcFile->DirCluster, pSrcFile->DirEntry);
FF_FetchEntry(pIoman, pSrcFile->DirCluster, pSrcFile->DirEntry, EntryBuffer);
EntryBuffer[0] = 0xE5;
FF_PushEntry(pIoman, pSrcFile->DirCluster, pSrcFile->DirEntry, EntryBuffer);
}
FF_unlockDIR(pIoman);
FF_Close(pSrcFile);
FF_FlushCache(pIoman);
return FF_ERR_NONE;
}
return FF_ERR_FILE_DIR_NOT_FOUND;
}
return FF_ERR_FILE_SOURCE_NOT_FOUND; // Source not found!
}
FF_ERROR FF_RmDir(FF_IOMAN *pIoman, const FF_T_INT8 *path) {
FF_FILE *pFile;
FF_ERROR Error = FF_ERR_NONE;
FF_T_UINT8 EntryBuffer[32];
FF_T_SINT8 RetVal = FF_ERR_NONE;
#ifdef FF_PATH_CACHE
FF_T_UINT32 i;
#endif
if(!pIoman) {
return FF_ERR_NULL_POINTER;
}
pFile = FF_Open(pIoman, path, FF_MODE_DIR, &Error);
if(!pFile) {
return Error; // File in use or File not found!
}
pFile->FileDeleted = FF_TRUE;
FF_lockDIR(pIoman);
{
if(FF_isDirEmpty(pIoman, path)) {
FF_lockFAT(pIoman);
{
FF_UnlinkClusterChain(pIoman, pFile->ObjectCluster, 0); // 0 to delete the entire chain!
}
FF_unlockFAT(pIoman);
// Edit the Directory Entry! (So it appears as deleted);
FF_RmLFNs(pIoman, pFile->DirCluster, pFile->DirEntry);
FF_FetchEntry(pIoman, pFile->DirCluster, pFile->DirEntry, EntryBuffer);
EntryBuffer[0] = 0xE5;
FF_PushEntry(pIoman, pFile->DirCluster, pFile->DirEntry, EntryBuffer);
#ifdef FF_PATH_CACHE
FF_PendSemaphore(pIoman->pSemaphore); // Thread safety on shared object!
{
for(i = 0; i < FF_PATH_CACHE_DEPTH; i++) {
if(FF_strmatch(pIoman->pPartition->PathCache[i].Path, path, (FF_T_UINT16)strlen(path))) {
pIoman->pPartition->PathCache[i].Path[0] = '\0';
pIoman->pPartition->PathCache[i].DirCluster = 0;
FF_ReleaseSemaphore(pIoman->pSemaphore);
}
}
}
FF_ReleaseSemaphore(pIoman->pSemaphore);
#endif
FF_IncreaseFreeClusters(pIoman, pFile->iChainLength);
FF_FlushCache(pIoman);
} else {
RetVal = FF_ERR_DIR_NOT_EMPTY;
}
}
FF_unlockDIR(pIoman);
FF_Close(pFile); // Free the file pointer resources
// File is now lost!
return RetVal;
}
FF_ERROR FF_RmFile(FF_IOMAN *pIoman, const FF_T_WCHAR *path) {
#else
FF_ERROR FF_RmFile(FF_IOMAN *pIoman, const FF_T_INT8 *path) {
#endif
FF_FILE *pFile;
FF_ERROR Error = FF_ERR_NONE;
FF_T_UINT8 EntryBuffer[32];
FF_FETCH_CONTEXT FetchContext;
pFile = FF_Open(pIoman, path, FF_MODE_READ, &Error);
if(!pFile) {
return Error; // File in use or File not found!
}
pFile->FileDeleted = FF_TRUE;
if(pFile->ObjectCluster) { // Ensure there is actually a cluster chain to delete!
FF_lockFAT(pIoman); // Lock the FAT so its thread-safe.
{
Error = FF_UnlinkClusterChain(pIoman, pFile->ObjectCluster, 0); // 0 to delete the entire chain!
}
FF_unlockFAT(pIoman);
if(Error) {
FF_Close(pFile);
return Error;
}
}
// Edit the Directory Entry! (So it appears as deleted);
FF_lockDIR(pIoman);
{
Error = FF_InitEntryFetch(pIoman, pFile->DirCluster, &FetchContext);
if(Error) {
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
Error = FF_RmLFNs(pIoman, pFile->DirEntry, &FetchContext);
if(Error) {
FF_CleanupEntryFetch(pIoman, &FetchContext);
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
Error = FF_FetchEntryWithContext(pIoman, pFile->DirEntry, &FetchContext, EntryBuffer);
if(Error) {
FF_CleanupEntryFetch(pIoman, &FetchContext);
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
EntryBuffer[0] = 0xE5;
Error = FF_PushEntryWithContext(pIoman, pFile->DirEntry, &FetchContext, EntryBuffer);
if(Error) {
FF_CleanupEntryFetch(pIoman, &FetchContext);
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
FF_CleanupEntryFetch(pIoman, &FetchContext);
}
FF_unlockDIR(pIoman);
Error = FF_FlushCache(pIoman);
if(Error) {
FF_Close(pFile);
return Error;
}
Error = FF_Close(pFile); // Free the file pointer resources
return Error;
}
FF_ERROR FF_FormatPartition(FF_IOMAN *pIoman, FF_T_UINT32 ulPartitionNumber, FF_T_UINT32 ulClusterSize) {
FF_BUFFER *pBuffer;
FF_T_SINT8 scPartitionCount;
FF_T_UINT32 maxClusters, f16MaxClusters, f32MaxClusters;
FF_T_UINT32 fatSize = 32; // Default to a fat32 format.
FF_PARTITION_ENTRY partitionGeom;
FF_T_UINT32 ulBPRLba; ///< The LBA of the boot partition record.
FF_T_UINT32 fat32Size, fat16Size, newFat32Size, newFat16Size, finalFatSize;
FF_T_UINT32 sectorsPerCluster = ulClusterSize / pIoman->BlkSize;
FF_T_UINT32 ulReservedSectors, ulTotalSectors;
FF_T_UINT32 ul32DataSectors, ul16DataSectors;
FF_T_UINT32 i;
FF_T_UINT32 ulClusterBeginLBA;
FF_ERROR Error = FF_ERR_NONE;
// Get Partition Metrics, and pass on to FF_Format() function
pBuffer = FF_GetBuffer(pIoman, 0, FF_MODE_READ);
{
if(!pBuffer) {
return FF_ERR_DEVICE_DRIVER_FAILED | FF_FORMATPARTITION;
}
scPartitionCount = FF_PartitionCount(pBuffer->pBuffer);
if(!scPartitionCount) {
// Get Partition Geom from volume boot record.
ulBPRLba = 0;
partitionGeom.ulStartLBA = FF_getShort(pBuffer->pBuffer, FF_FAT_RESERVED_SECTORS); // Get offset to start of where we can actually put the FAT table.
ulReservedSectors = partitionGeom.ulStartLBA;
partitionGeom.ulLength = (FF_T_UINT32) FF_getShort(pBuffer->pBuffer, FF_FAT_16_TOTAL_SECTORS);
if(partitionGeom.ulLength == 0) { // 32-bit entry was used.
partitionGeom.ulLength = FF_getLong(pBuffer->pBuffer, FF_FAT_32_TOTAL_SECTORS);
}
ulTotalSectors = partitionGeom.ulLength;
partitionGeom.ulLength -= partitionGeom.ulStartLBA; // Remove the reserved sectors from the count.
} else {
// Get partition Geom from the partition table entry.
}
// Calculate the max possiblenumber of clusters based on clustersize.
maxClusters = partitionGeom.ulLength / sectorsPerCluster;
// Determine the size of a FAT table required to support this.
fat32Size = (maxClusters * 4) / pIoman->BlkSize; // Potential size in sectors of a fat32 table.
if((maxClusters * 4) % pIoman->BlkSize) {
fat32Size++;
}
fat32Size *= 2; // Officially there are 2 copies of the FAT.
fat16Size = (maxClusters * 2) / pIoman->BlkSize; // Potential size in bytes of a fat16 table.
if((maxClusters * 2) % pIoman->BlkSize) {
fat16Size++;
}
fat16Size *= 2;
// A real number of sectors to be available is therefore ~~
ul16DataSectors = partitionGeom.ulLength - fat16Size;
ul32DataSectors = partitionGeom.ulLength - fat32Size;
f16MaxClusters = ul16DataSectors / sectorsPerCluster;
f32MaxClusters = ul32DataSectors / sectorsPerCluster;
newFat16Size = (f16MaxClusters * 2) / pIoman->BlkSize;
if((f16MaxClusters * 2) % pIoman->BlkSize) {
newFat16Size++;
}
newFat32Size = (f32MaxClusters * 4) / pIoman->BlkSize;
if((f32MaxClusters * 4) % pIoman->BlkSize) {
newFat32Size++;
}
// Now determine if this should be fat16/32 format?
if(f16MaxClusters < 65525) {
fatSize = 16;
finalFatSize = newFat16Size;
} else {
fatSize = 32;
finalFatSize = newFat32Size;
}
FF_ReleaseBuffer(pIoman, pBuffer);
for(i = 0; i < finalFatSize*2; i++) { // Ensure the FAT table is clear.
if(i == 0) {
pBuffer = FF_GetBuffer(pIoman, partitionGeom.ulStartLBA, FF_MODE_WR_ONLY);
if(!pBuffer) {
return FF_ERR_DEVICE_DRIVER_FAILED;
}
memset(pBuffer->pBuffer, 0, pIoman->BlkSize);
} else {
FF_BlockWrite(pIoman, partitionGeom.ulStartLBA+i, 1, pBuffer->pBuffer, FF_FALSE);
}
}
switch(fatSize) {
case 16: {
FF_putShort(pBuffer->pBuffer, 0, 0xFFF8); // First FAT entry.
FF_putShort(pBuffer->pBuffer, 2, 0xFFFF); // RESERVED alloc.
break;
}
case 32: {
FF_putLong(pBuffer->pBuffer, 0, 0x0FFFFFF8); // FAT32 FAT sig.
FF_putLong(pBuffer->pBuffer, 4, 0xFFFFFFFF); // RESERVED alloc.
FF_putLong(pBuffer->pBuffer, 8, 0x0FFFFFFF); // Root dir allocation.
break;
}
default:
break;
}
FF_ReleaseBuffer(pIoman, pBuffer);
// Clear and initialise the root dir.
ulClusterBeginLBA = partitionGeom.ulStartLBA + (finalFatSize*2);
for(i = 0; i < sectorsPerCluster; i++) {
if(i == 0) {
pBuffer = FF_GetBuffer(pIoman, ulClusterBeginLBA, FF_MODE_WR_ONLY);
memset(pBuffer->pBuffer, 0, pIoman->BlkSize);
} else {
FF_BlockWrite(pIoman, ulClusterBeginLBA+i, 1, pBuffer->pBuffer, FF_FALSE);
}
}
FF_ReleaseBuffer(pIoman, pBuffer);
// Correctly modify the second FAT item again.
pBuffer = FF_GetBuffer(pIoman, partitionGeom.ulStartLBA + finalFatSize, FF_MODE_WRITE);
{
switch(fatSize) {
case 16: {
FF_putShort(pBuffer->pBuffer, 0, 0xFFF8);
FF_putShort(pBuffer->pBuffer, 2, 0xFFFF);
break;
}
case 32:
FF_putLong(pBuffer->pBuffer, 0, 0x0FFFFFF8);
FF_putLong(pBuffer->pBuffer, 4, 0xFFFFFFFF);
FF_putLong(pBuffer->pBuffer, 8, 0x0FFFFFFF); // Root dir allocation.
}
}
FF_ReleaseBuffer(pIoman, pBuffer);
// Modify the fields in the VBR/PBR for correct mounting.
pBuffer = FF_GetBuffer(pIoman, ulBPRLba, FF_MODE_WRITE); // Modify the FAT descriptions.
{
// -- First section Common vars to Fat12/16 and 32.
memset(pBuffer->pBuffer, 0, pIoman->BlkSize); // Clear the boot record.
FF_putChar(pBuffer->pBuffer, 0, 0xEB); // Place the Jump to bootstrap x86 instruction.
FF_putChar(pBuffer->pBuffer, 1, 0x3C); // Even though we won't populate the bootstrap code.
FF_putChar(pBuffer->pBuffer, 2, 0x90); // Some devices look for this as a signature.
memcpy(((FF_T_UINT8 *)pBuffer->pBuffer+3), "FULLFAT2", 8); // Place the FullFAT OEM code.
FF_putShort(pBuffer->pBuffer, 11, pIoman->BlkSize);
FF_putChar(pBuffer->pBuffer, 13, (FF_T_UINT8) sectorsPerCluster);
FF_putShort(pBuffer->pBuffer, FF_FAT_RESERVED_SECTORS, (FF_T_UINT16)partitionGeom.ulStartLBA); // Number of reserved sectors. (1 for fat12/16, 32 for f32).
FF_putShort(pBuffer->pBuffer, FF_FAT_NUMBER_OF_FATS, 2); // Always 2 copies.
//FF_putShort(pBuffer->pBuffer, 19, 0); // Number of sectors in partition if size < 32mb.
FF_putChar(pBuffer->pBuffer, 21, 0xF8); // Media type -- HDD.
FF_putShort(pBuffer->pBuffer, 510, 0xAA55); // MBR sig.
FF_putLong(pBuffer->pBuffer, 32, partitionGeom.ulLength+partitionGeom.ulStartLBA); // Total sectors of this partition.
if(fatSize == 32) {
FF_putShort(pBuffer->pBuffer, 36, (FF_T_UINT16)finalFatSize); // Number of sectors per fat.
FF_putShort(pBuffer->pBuffer, 44, 2); // Root dir cluster (2).
FF_putShort(pBuffer->pBuffer, 48, 1); // FSINFO sector at LBA1.
FF_putShort(pBuffer->pBuffer, 50, 6); // 0 for no backup boot sector.
FF_putChar(pBuffer->pBuffer, 66, 0x29); // Indicate extended signature is present.
memcpy(((FF_T_UINT8 *)pBuffer->pBuffer+71), "FullFAT2-V", 10); // Volume name.
memcpy(((FF_T_UINT8 *)pBuffer->pBuffer+81), "FAT32 ", 8);
// Put backup boot sector.
FF_BlockWrite(pIoman, 6, 1, pBuffer->pBuffer, FF_FALSE);
} else {
FF_putChar(pBuffer->pBuffer, 38, 0x28); // Signal this contains an extended signature.
memcpy(((FF_T_UINT8 *)pBuffer->pBuffer+43), "FullFAT2-V", 10); // Volume name.
memcpy(((FF_T_UINT8 *)pBuffer->pBuffer+54), "FAT16 ", 8);
FF_putShort(pBuffer->pBuffer, FF_FAT_16_SECTORS_PER_FAT, (FF_T_UINT16) finalFatSize);
FF_putShort(pBuffer->pBuffer, 17, 512); // Number of Dir entries. (FAT32 0).
//FF_putShort(pBuffer->pBuffer, FF_FAT_ROOT_ENTRY_COUNT,
}
}
}
FF_ReleaseBuffer(pIoman, pBuffer);
if(fatSize == 32) {
// Finally if FAT32, create an FSINFO sector.
pBuffer = FF_GetBuffer(pIoman, 1, FF_MODE_WRITE);
{
memset(pBuffer->pBuffer, 0, pIoman->BlkSize);
FF_putLong(pBuffer->pBuffer, 0, 0x41615252); // FSINFO sect magic number.
FF_putLong(pBuffer->pBuffer, 484, 0x61417272); // FSINFO second sig.
// Calculate total sectors, -1 for the root dir allocation. (Free sectors count).
FF_putLong(pBuffer->pBuffer, 488, ((ulTotalSectors - (ulReservedSectors + (2*finalFatSize))) / sectorsPerCluster)-1);
FF_putLong(pBuffer->pBuffer, 492, 2); // Hint for next free cluster.
FF_putShort(pBuffer->pBuffer, 510, 0xAA55);
}
FF_ReleaseBuffer(pIoman, pBuffer);
}
FF_FlushCache(pIoman);
return Error;
}
FF_FILE *FF_Open(FF_IOMAN *pIoman, const FF_T_WCHAR *path, FF_T_UINT8 Mode, FF_ERROR *pError) {
#else
FF_FILE *FF_Open(FF_IOMAN *pIoman, const FF_T_INT8 *path, FF_T_UINT8 Mode, FF_ERROR *pError) {
#endif
FF_FILE *pFile;
FF_FILE *pFileChain;
FF_DIRENT Object;
FF_T_UINT32 DirCluster, FileCluster;
FF_T_UINT32 nBytesPerCluster;
#ifdef FF_UNICODE_SUPPORT
FF_T_WCHAR filename[FF_MAX_FILENAME];
#else
FF_T_INT8 filename[FF_MAX_FILENAME];
#endif
FF_ERROR Error;
FF_T_UINT16 i;
if(pError) {
*pError = 0;
}
if(!pIoman) {
if(pError) {
*pError = FF_ERR_NULL_POINTER;
}
return (FF_FILE *)NULL;
}
pFile = FF_MALLOC(sizeof(FF_FILE));
if(!pFile) {
if(pError) {
*pError = FF_ERR_NOT_ENOUGH_MEMORY;
}
return (FF_FILE *)NULL;
}
// Get the Mode Bits.
pFile->Mode = Mode;
#ifdef FF_UNICODE_SUPPORT
i = (FF_T_UINT16) wcslen(path);
#else
i = (FF_T_UINT16) strlen(path);
#endif
while(i != 0) {
if(path[i] == '\\' || path[i] == '/') {
break;
}
i--;
}
#ifdef FF_UNICODE_SUPPORT
wcsncpy(filename, (path + i + 1), FF_MAX_FILENAME);
#else
strncpy(filename, (path + i + 1), FF_MAX_FILENAME);
#endif
if(i == 0) {
i = 1;
}
DirCluster = FF_FindDir(pIoman, path, i, &Error);
if(Error) {
if(pError) {
*pError = Error;
}
FF_FREE(pFile);
return (FF_FILE *) NULL;
}
if(DirCluster) {
FileCluster = FF_FindEntryInDir(pIoman, DirCluster, filename, 0x00, &Object, &Error);
if(Error) {
if(pError) {
*pError = Error;
}
FF_FREE(pFile);
return (FF_FILE *) NULL;
}
if(!FileCluster) { // If 0 was returned, it might be because the file has no allocated cluster
#ifdef FF_UNICODE_SUPPORT
if(wcslen(filename) == wcslen(Object.FileName)) {
if(Object.Filesize == 0 && FF_strmatch(filename, Object.FileName, (FF_T_UINT16) wcslen(filename)) == FF_TRUE) {
#else
if(strlen(filename) == strlen(Object.FileName)) {
if(Object.Filesize == 0 && FF_strmatch(filename, Object.FileName, (FF_T_UINT16) strlen(filename)) == FF_TRUE) {
#endif
// The file really was found!
FileCluster = 1;
}
}
}
if(!FileCluster) {
if((pFile->Mode & FF_MODE_CREATE)) {
FileCluster = FF_CreateFile(pIoman, DirCluster, filename, &Object, &Error);
if(Error) {
if(pError) {
*pError = Error;
}
FF_FREE(pFile);
return (FF_FILE *) NULL;
}
Object.CurrentItem += 1;
}
}
if(FileCluster) {
if(Object.Attrib == FF_FAT_ATTR_DIR) {
if(!(pFile->Mode & FF_MODE_DIR)) {
// Not the object, File Not Found!
FF_FREE(pFile);
if(pError) {
*pError = FF_ERR_FILE_OBJECT_IS_A_DIR;
}
return (FF_FILE *) NULL;
}
}
//---------- Ensure Read-Only files don't get opened for Writing.
if((pFile->Mode & FF_MODE_WRITE) || (pFile->Mode & FF_MODE_APPEND)) {
if((Object.Attrib & FF_FAT_ATTR_READONLY)) {
FF_FREE(pFile);
if(pError) {
*pError = FF_ERR_FILE_IS_READ_ONLY;
}
return (FF_FILE *) NULL;
}
}
pFile->pIoman = pIoman;
pFile->FilePointer = 0;
pFile->ObjectCluster = Object.ObjectCluster;
pFile->Filesize = Object.Filesize;
pFile->CurrentCluster = 0;
pFile->AddrCurrentCluster = pFile->ObjectCluster;
//pFile->Mode = Mode;
pFile->Next = NULL;
pFile->DirCluster = DirCluster;
pFile->DirEntry = Object.CurrentItem - 1;
nBytesPerCluster = pFile->pIoman->pPartition->SectorsPerCluster / pIoman->BlkSize;
pFile->iChainLength = 0;
pFile->iEndOfChain = 0;
pFile->FileDeleted = FF_FALSE;
// File Permission Processing
// Only "w" and "w+" mode strings can erase a file's contents.
// Any other combinations will not cause an erase.
if((pFile->Mode & FF_MODE_TRUNCATE)) {
pFile->Filesize = 0;
pFile->FilePointer = 0;
}
/*
Add pFile onto the end of our linked list of FF_FILE objects.
*/
FF_PendSemaphore(pIoman->pSemaphore);
{
if(!pIoman->FirstFile) {
pIoman->FirstFile = pFile;
} else {
pFileChain = (FF_FILE *) pIoman->FirstFile;
do {
if(pFileChain->ObjectCluster == pFile->ObjectCluster) {
// File is already open! DON'T ALLOW IT!
FF_ReleaseSemaphore(pIoman->pSemaphore);
FF_FREE(pFile);
if(pError) {
*pError = FF_ERR_FILE_ALREADY_OPEN;
}
return (FF_FILE *) NULL;
}
if(!pFileChain->Next) {
pFileChain->Next = pFile;
break;
}
pFileChain = (FF_FILE *) pFileChain->Next;
}while(pFileChain != NULL);
}
}
FF_ReleaseSemaphore(pIoman->pSemaphore);
return pFile;
}else {
FF_FREE(pFile);
if(pError) {
*pError = FF_ERR_FILE_NOT_FOUND;
}
return (FF_FILE *) NULL;
}
}
if(pError) {
*pError = FF_ERR_FILE_INVALID_PATH;
}
FF_FREE(pFile);
return (FF_FILE *)NULL;
}
/**
* @public
* @brief Tests if a Directory contains any other files or folders.
*
* @param pIoman FF_IOMAN object returned from the FF_CreateIOMAN() function.
*
**/
#ifdef FF_UNICODE_SUPPORT
FF_T_BOOL FF_isDirEmpty(FF_IOMAN *pIoman, const FF_T_WCHAR *Path) {
#else
FF_T_BOOL FF_isDirEmpty(FF_IOMAN *pIoman, const FF_T_INT8 *Path) {
#endif
FF_DIRENT MyDir;
FF_ERROR RetVal = FF_ERR_NONE;
FF_T_UINT8 i = 0;
if(!pIoman) {
return FF_FALSE;
}
RetVal = FF_FindFirst(pIoman, &MyDir, Path);
while(RetVal == 0) {
i++;
RetVal = FF_FindNext(pIoman, &MyDir);
if(i > 2) {
return FF_FALSE;
}
}
return FF_TRUE;
}
#ifdef FF_UNICODE_SUPPORT
FF_ERROR FF_RmDir(FF_IOMAN *pIoman, const FF_T_WCHAR *path) {
#else
FF_ERROR FF_RmDir(FF_IOMAN *pIoman, const FF_T_INT8 *path) {
#endif
FF_FILE *pFile;
FF_ERROR Error = FF_ERR_NONE;
FF_T_UINT8 EntryBuffer[32];
FF_FETCH_CONTEXT FetchContext;
FF_T_SINT8 RetVal = FF_ERR_NONE;
#ifdef FF_PATH_CACHE
FF_T_UINT32 i;
#endif
if(!pIoman) {
return FF_ERR_NULL_POINTER;
}
pFile = FF_Open(pIoman, path, FF_MODE_DIR, &Error);
if(!pFile) {
return Error; // File in use or File not found!
}
pFile->FileDeleted = FF_TRUE;
FF_lockDIR(pIoman);
{
if(FF_isDirEmpty(pIoman, path)) {
FF_lockFAT(pIoman);
{
Error = FF_UnlinkClusterChain(pIoman, pFile->ObjectCluster, 0); // 0 to delete the entire chain!
}
FF_unlockFAT(pIoman);
if(Error) {
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
// Initialise the dirent Fetch Context object for faster removal of dirents.
Error = FF_InitEntryFetch(pIoman, pFile->DirCluster, &FetchContext);
if(Error) {
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
// Edit the Directory Entry! (So it appears as deleted);
Error = FF_RmLFNs(pIoman, pFile->DirEntry, &FetchContext);
if(Error) {
FF_CleanupEntryFetch(pIoman, &FetchContext);
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
Error = FF_FetchEntryWithContext(pIoman, pFile->DirEntry, &FetchContext, EntryBuffer);
if(Error) {
FF_CleanupEntryFetch(pIoman, &FetchContext);
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
EntryBuffer[0] = 0xE5;
Error = FF_PushEntryWithContext(pIoman, pFile->DirEntry, &FetchContext, EntryBuffer);
if(Error) {
FF_CleanupEntryFetch(pIoman, &FetchContext);
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
#ifdef FF_PATH_CACHE
FF_PendSemaphore(pIoman->pSemaphore); // Thread safety on shared object!
{
for(i = 0; i < FF_PATH_CACHE_DEPTH; i++) {
#ifdef FF_UNICODE_SUPPORT
if(FF_strmatch(pIoman->pPartition->PathCache[i].Path, path, (FF_T_UINT16)wcslen(path))) {
#else
if(FF_strmatch(pIoman->pPartition->PathCache[i].Path, path, (FF_T_UINT16)strlen(path))) {
#endif
pIoman->pPartition->PathCache[i].Path[0] = '\0';
pIoman->pPartition->PathCache[i].DirCluster = 0;
FF_ReleaseSemaphore(pIoman->pSemaphore);
}
}
}
FF_ReleaseSemaphore(pIoman->pSemaphore);
#endif
Error = FF_IncreaseFreeClusters(pIoman, pFile->iChainLength);
if(Error) {
FF_CleanupEntryFetch(pIoman, &FetchContext);
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
FF_CleanupEntryFetch(pIoman, &FetchContext);
Error = FF_FlushCache(pIoman);
if(Error) {
FF_unlockDIR(pIoman);
FF_Close(pFile);
return Error;
}
} else {
RetVal = FF_ERR_DIR_NOT_EMPTY;
}
}
FF_unlockDIR(pIoman);
Error = FF_Close(pFile); // Free the file pointer resources
if(Error) {
return Error;
}
// File is now lost!
return RetVal;
}
