Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12]

▼Nstorage	The storage namespace
CActiongraph
CAlignError
CBcache	A bcache device
CBcacheCset	A bcache cache set
CBlkDevice	An abstract Block Device
CBtrfs
CCodeLocation	Helper class for UI exceptions: Store BASE_FILE, FUNCTION and LINE
CCommitCallbacks
CDevice	An abstract base class of storage devices, and a vertex in the Devicegraph
CDevicegraph	The master container of the libstorage
CDeviceHasWrongType
CDeviceNotFound
CDeviceNotFoundByName
CDeviceNotFoundBySid
CDeviceNotFoundByUuid
CDifferentBlockSizes
CDisk	A physical disk device
CEncryption	An encryption layer on a blk device
CEnvironment
CException	Base class for storage exceptions
CExt4
CFilesystem
CGpt
CHolder
CHolderAlreadyExists
CHolderHasWrongType
CHolderNotFound
CHolderNotFoundBySid
CIndexOutOfRangeException	Exception class for "index out of range"
CInvalidBlockSize
CInvalidExtentSize
CLogicException	Exception class for faulty logic within the program
CLuks	An luks encryption layer on a block device
CLvmLv	A Logical Volume of the Logical Volume Manager (LVM)
CLvmPv
CLvmVg	A Volume Group of the Logical Volume Manager (LVM)
CLvmVgNotFoundByVgName
CMd	A MD device
CMdUser
CMsdos
CNoIntersection
CNotImplementedException	Exception class for features not implemented
CNotInside
CNtfs
CNullPointerException	Exception class for generic null pointer exceptions
COutOfMemoryException	Exception class for "out of memory"
COverflowException	Exception class for "overflow"
CParseException	Exception class for parse errors, e.g
CPartition	A partition of a Partitionable, e.g. Disk or Md
CPartitionable
CPartitionSlot
CPartitionTable
CRegion	A start/length pair with a block size
CStorage	The main entry point to libstorage
CSubdevice
CSwap
CTopology	A class to calculate partition alignment based on hardware topology
CUser
CVfat
CWrongNumberOfChildren
CWrongNumberOfParents
CXfs