FF_ActiveHandles FF_BlockRead FF_BlockWrite FF_CountFreeClusters FF_CreateIOMAN FF_DecreaseFreeClusters FF_DestroyIOMAN FF_DetermineFatType FF_FlushCache FF_GetBuffer FF_GetEfiPartitionEntry FF_GetPartitionBlockSize FF_GetVolumeSize FF_GPT_ENTRY_FIRST_SECTOR_LBA FF_GPT_HEAD_CRC FF_GPT_HEAD_ENTRY_SIZE FF_GPT_HEAD_LENGTH FF_GPT_HEAD_PART_ENTRY_LBA FF_GPT_HEAD_TOTAL_ENTRIES FF_IncreaseFreeClusters FF_IOMAN_InitBufferDescriptors FF_MountPartition FF_PartitionCount FF_RegisterBlkDevice FF_ReleaseBuffer FF_UnmountPartition FF_UnregisterBlkDevice

static FF_ERROR FF_DetermineFatType ( FF_IOMAN *  pIoman ) [static, private] Definition at line 573 of file ff_ioman.c. Referenced by FF_MountPartition(). { FF_PARTITION *pPart; FF_BUFFER *pBuffer; FF_T_UINT32 testLong; if(pIoman) { pPart = pIoman->pPartition; if(pPart->NumClusters < 4085) { // FAT12 pPart->Type = FF_T_FAT12; #ifdef FF_FAT_CHECK #ifdef FF_FAT12_SUPPORT pBuffer = FF_GetBuffer(pIoman, pIoman->pPartition->FatBeginLBA, FF_MODE_READ); { if(!pBuffer) { return FF_ERR_DEVICE_DRIVER_FAILED; } testLong = (FF_T_UINT32) FF_getShort(pBuffer->pBuffer, 0x0000); } FF_ReleaseBuffer(pIoman, pBuffer); if((testLong & 0x3FF) != 0x3F8) { return FF_ERR_IOMAN_NOT_FAT_FORMATTED; } #else return FF_ERR_IOMAN_NOT_FAT_FORMATTED; #endif #endif #ifdef FF_FAT12_SUPPORT return FF_ERR_NONE; #endif } else if(pPart->NumClusters < 65525) { // FAT 16 pPart->Type = FF_T_FAT16; #ifdef FF_FAT_CHECK pBuffer = FF_GetBuffer(pIoman, pIoman->pPartition->FatBeginLBA, FF_MODE_READ); { if(!pBuffer) { return FF_ERR_DEVICE_DRIVER_FAILED; } testLong = (FF_T_UINT32) FF_getShort(pBuffer->pBuffer, 0x0000); } FF_ReleaseBuffer(pIoman, pBuffer); if(testLong != 0xFFF8) { return FF_ERR_IOMAN_NOT_FAT_FORMATTED; } #endif return FF_ERR_NONE; } else { // FAT 32! pPart->Type = FF_T_FAT32; #ifdef FF_FAT_CHECK pBuffer = FF_GetBuffer(pIoman, pIoman->pPartition->FatBeginLBA, FF_MODE_READ); { if(!pBuffer) { return FF_ERR_DEVICE_DRIVER_FAILED; } testLong = FF_getLong(pBuffer->pBuffer, 0x0000); } FF_ReleaseBuffer(pIoman, pBuffer); if((testLong & 0x0FFFFFF8) != 0x0FFFFFF8 && (testLong & 0x0FFFFFF8) != 0x0FFFFFF0) { return FF_ERR_IOMAN_NOT_FAT_FORMATTED; } #endif return FF_ERR_NONE; } } return FF_ERR_IOMAN_NOT_FAT_FORMATTED; }