reactos/rosapps/fraginator/DriveVolume.h
KJK::Hyperion 018539280c - deleted temporary files, generated files, binaries
- migrated project files to Visual C++ 2005 Express - the latest, the best, for free
 - converted to an Unicode application

svn path=/trunk/; revision=21432
2006-04-01 15:02:38 +00:00

158 lines
4.7 KiB
C++

/*****************************************************************************
DriveVolume
Class for opening a volume and getting information on it and defragging it
and stuff.
*****************************************************************************/
#ifndef DRIVEVOLUME_H
#define DRIVEVOLUME_H
#include "Unfrag.h"
#include <vector>
#include <string>
using namespace std;
#pragma pack (push, 1)
typedef struct
{
unsigned int Archive : 1;
unsigned int Compressed : 1;
unsigned int Directory : 1;
unsigned int Encrypted : 1;
unsigned int Hidden : 1;
unsigned int Normal : 1;
unsigned int Offline : 1;
unsigned int ReadOnly : 1;
unsigned int Reparse : 1;
unsigned int Sparse : 1;
unsigned int System : 1;
unsigned int Temporary : 1;
// For defragmenting purposes and other information
unsigned int Unmovable : 1; // can we even touch it?
unsigned int Process : 1; // should we process it?
unsigned int AccessDenied : 1; // could we not open it?
} FileAttr;
typedef struct
{
uint64 StartLCN;
uint64 Length;
} Extent;
typedef struct
{
wstring Name;
uint32 DirIndice; // indice into directory list
uint64 Size;
uint64 Clusters;
FileAttr Attributes;
vector<Extent> Fragments;
} FileInfo;
typedef vector<FileInfo> FileList;
typedef struct
{
wstring Name;
wstring Serial;
DWORD MaxNameLen;
wstring FileSystem;
uint64 ClusterCount;
uint32 ClusterSize;
uint64 TotalBytes;
uint64 FreeBytes;
} VolumeInfo;
#pragma pack (pop)
// Callback function for Scan()
// NOTE: Do *NOT* close the HANDLE given to you. It is provided for convenience,
// and is closed automatically by the function that calls you!
typedef bool (*ScanCallback) (FileInfo &Info, HANDLE &FileHandle, void *UserData);
extern bool BuildDBCallback (FileInfo &Info, HANDLE &FileHandle, void *UserData);
class DriveVolume
{
public:
DriveVolume ();
~DriveVolume ();
bool Open (wstring Name); // opens the volume
void Close (void);
bool ObtainInfo (void); // retrieves drive geometry
bool GetBitmap (void); // gets drive bitmap
// builds list of files on drive
// if QuitMonitor ever becomes true (ie from a separate thread) it will clean up and return
bool BuildFileList (bool &QuitMonitor, double &Progress);
// Functions for accessing the volume bitmap
bool IsClusterUsed (uint64 Cluster);
void SetClusterUsed (uint64 Cluster, bool Used);
DISK_GEOMETRY GetGeometry (void) { return (Geometry); }
VolumeInfo GetVolumeInfo (void) { return (VolInfo); }
wstring GetRootPath (void) { return (RootPath); }
// Scans drive starting from the root dir and calls a user defined function
// for each file/directory encountered. void* UserData is passed to this
// function so you can give it some good ol' fashioned context.
bool Scan (ScanCallback Callback, void *UserData);
// Retrieve a directory string from the file database
wstring &GetDBDir (uint32 Indice);
uint32 GetDBDirCount (void);
// Retrieve file strings/info from the file database
FileInfo &GetDBFile (uint32 Indice);
uint32 GetDBFileCount (void);
// Kill it!
uint32 RemoveDBFile (uint32 Indice);
// This is for actual defragmenting! It will automatically update the drive bitmap.
// Will not move any other files out of the way.
// Failure (return value of false) means that something is in the way.
bool MoveFileDumb (uint32 FileIndice, uint64 NewLCN);
// Look for a range of sequential free clusters
// Returns true if one could be found, false if not
bool FindFreeRange (uint64 StartLCN, uint64 ReqLength, uint64 &LCNResult);
private:
friend bool BuildDBCallback (FileInfo &Info, HANDLE &FileHandle, void *UserData);
// DirPrefix should be in the form "drive:\\path\\" ie, C:\CRAP\ .
bool ScanDirectory (wstring DirPrefix, ScanCallback Callback, void *UserData);
// given a file's attributes, should it be processed or not?
bool ShouldProcess (FileAttr Attr);
bool GetClusterInfo (FileInfo &Info, HANDLE &HandleResult);
VolumeInfo VolInfo;
FileList Files;
vector<wstring> Directories; // Directories[Files[x].DirIndice]
wstring RootPath; // ie, C:\ .
HANDLE Handle;
DISK_GEOMETRY Geometry;
uint32 *BitmapDetail;
};
#endif // DRIVEVOLUME_H