C++ (Cpp) xixcore_FindSetBitCountの例

コード例 #1

ファイル: super.c プロジェクト: cpady/ndas4linux

static 
int 
xixfs_statfs(
	struct dentry * dentry, 
	struct kstatfs  *buf
)
{
	PXIXFS_LINUX_VCB pVCB = XIXFS_SB(dentry->d_sb);
	XIXFS_ASSERT_VCB(pVCB);
	/* If the count of free cluster is still unknown, counts it here. */

      DebugTrace(DEBUG_LEVEL_TRACE, (DEBUG_TARGET_VFSAPIT|DEBUG_TARGET_VCB),
		("Enter xixfs_statfs\n"));


	buf->f_type = dentry->d_sb->s_magic;
	buf->f_bsize = CLUSTER_SIZE;
	buf->f_blocks =( (pVCB->XixcoreVcb.LotSize/CLUSTER_SIZE) * pVCB->XixcoreVcb.NumLots );
	if(pVCB->XixcoreVcb.IsVolumeWriteProtected) {
		buf->f_bfree = ( (pVCB->XixcoreVcb.LotSize/CLUSTER_SIZE) * pVCB->XixcoreVcb.NumLots );
		buf->f_bavail = ( (pVCB->XixcoreVcb.LotSize/CLUSTER_SIZE) * pVCB->XixcoreVcb.NumLots );
	}else{
		buf->f_bfree = ( (pVCB->XixcoreVcb.LotSize/CLUSTER_SIZE) * xixcore_FindSetBitCount(pVCB->XixcoreVcb.NumLots, xixcore_GetDataBufferOfBitMap(pVCB->XixcoreVcb.MetaContext.VolumeFreeMap->Data)));
		buf->f_bavail =( (pVCB->XixcoreVcb.LotSize/CLUSTER_SIZE) * xixcore_FindSetBitCount(pVCB->XixcoreVcb.NumLots, xixcore_GetDataBufferOfBitMap(pVCB->XixcoreVcb.MetaContext.VolumeFreeMap->Data)));
	}
	buf->f_namelen = 1024;

      DebugTrace(DEBUG_LEVEL_TRACE, (DEBUG_TARGET_VFSAPIT|DEBUG_TARGET_VCB),
		("Exit xixfs_statfs\n"));
	  
	return 0;
}

コード例 #2

ファイル: xixfs_volumectrl.c プロジェクト: tigtigtig/ndas4windows

NTSTATUS
xixfs_QueryFsSizeInfo (
    IN PXIXFS_IRPCONTEXT 			pIrpContext,
    IN PXIXFS_VCB 					pVcb,
    IN PFILE_FS_SIZE_INFORMATION 	Buffer,
    IN uint32 						Length,
    IN OUT uint32 					*ByteToReturn
    )
{

	PAGED_CODE();
	DebugTrace(DEBUG_LEVEL_TRACE, (DEBUG_TARGET_VOLINFO|DEBUG_TARGET_IRPCONTEXT),
		("Enter xixfs_QueryFsSizeInfo \n"));

	if(Length < sizeof(FILE_FS_SIZE_INFORMATION)){
		*ByteToReturn = 0;
		return STATUS_INVALID_PARAMETER;
	}



	Buffer->TotalAllocationUnits.QuadPart = xixfs_GetLcnFromLot(pVcb->XixcoreVcb.LotSize, pVcb->XixcoreVcb.NumLots );
	// changed by ILGU HONG for readonly 09052006
	if(pVcb->XixcoreVcb.IsVolumeWriteProtected){
		Buffer->AvailableAllocationUnits.QuadPart = ((pVcb->XixcoreVcb.LotSize/CLUSTER_SIZE)* pVcb->XixcoreVcb.NumLots);
	}else{
		Buffer->AvailableAllocationUnits.QuadPart = ((pVcb->XixcoreVcb.LotSize/CLUSTER_SIZE)* xixcore_FindSetBitCount(pVcb->XixcoreVcb.NumLots, xixcore_GetDataBuffer(pVcb->XixcoreVcb.MetaContext.VolumeFreeMap->Data)) );
	}
	// changed by ILGU HONG for readonly end

	
	
	Buffer->SectorsPerAllocationUnit = (CLUSTER_SIZE / pVcb->XixcoreVcb.SectorSize);
	Buffer->BytesPerSector = pVcb->XixcoreVcb.SectorSize;	
	

	/*
	DbgPrint("1 NumLots(%I64d): TotalUnit(%I64d):AvailableUnit(%I64d):SecPerUnit(%ld):BytesPerSec(%ld)\n",
			pVcb->NumLots,
			Buffer->TotalAllocationUnits.QuadPart,
			Buffer->AvailableAllocationUnits.QuadPart,
			Buffer->SectorsPerAllocationUnit,
			Buffer->BytesPerSector);
	*/

	*ByteToReturn =(( sizeof(FILE_FS_SIZE_INFORMATION) + 7)/8)*8;
	
	DebugTrace(DEBUG_LEVEL_TRACE, (DEBUG_TARGET_VOLINFO|DEBUG_TARGET_IRPCONTEXT),
		("Exit xixfs_QueryFsSizeInfo \n"));
	return STATUS_SUCCESS;
	
}