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// Windows/FileIO.h
#ifndef __WINDOWS_FILE_IO_H
#define __WINDOWS_FILE_IO_H
#include "../Common/MyWindows.h"
#if defined(_WIN32) && !defined(UNDER_CE)
#include <winioctl.h>
#endif
#include "../Common/MyString.h"
#include "../Common/MyBuffer.h"
#include "Defs.h"
#define _my_IO_REPARSE_TAG_MOUNT_POINT (0xA0000003L)
#define _my_IO_REPARSE_TAG_SYMLINK (0xA000000CL)
#define _my_SYMLINK_FLAG_RELATIVE 1
#define my_FSCTL_SET_REPARSE_POINT CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 41, METHOD_BUFFERED, FILE_SPECIAL_ACCESS) // REPARSE_DATA_BUFFER
#define my_FSCTL_GET_REPARSE_POINT CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 42, METHOD_BUFFERED, FILE_ANY_ACCESS) // REPARSE_DATA_BUFFER
namespace NWindows {
namespace NFile {
#if defined(_WIN32) && !defined(UNDER_CE)
bool FillLinkData(CByteBuffer &dest, const wchar_t *path, bool isSymLink);
#endif
struct CReparseShortInfo
{
unsigned Offset;
unsigned Size;
bool Parse(const Byte *p, size_t size);
};
struct CReparseAttr
{
UInt32 Tag;
UInt32 Flags;
UString SubsName;
UString PrintName;
CReparseAttr(): Tag(0), Flags(0) {}
// Parse()
// returns true and (errorCode = 0), if (correct MOUNT_POINT or SYMLINK)
// returns false and (errorCode = ERROR_REPARSE_TAG_MISMATCH), if not (MOUNT_POINT or SYMLINK)
bool Parse(const Byte *p, size_t size, DWORD &errorCode);
bool IsMountPoint() const { return Tag == _my_IO_REPARSE_TAG_MOUNT_POINT; } // it's Junction
bool IsSymLink() const { return Tag == _my_IO_REPARSE_TAG_SYMLINK; }
bool IsRelative() const { return Flags == _my_SYMLINK_FLAG_RELATIVE; }
// bool IsVolume() const;
bool IsOkNamePair() const;
UString GetPath() const;
};
namespace NIO {
bool GetReparseData(CFSTR path, CByteBuffer &reparseData, BY_HANDLE_FILE_INFORMATION *fileInfo = NULL);
bool SetReparseData(CFSTR path, bool isDir, const void *data, DWORD size);
class CFileBase
{
protected:
HANDLE _handle;
bool Create(CFSTR path, DWORD desiredAccess,
DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes);
public:
bool DeviceIoControl(DWORD controlCode, LPVOID inBuffer, DWORD inSize,
LPVOID outBuffer, DWORD outSize, LPDWORD bytesReturned, LPOVERLAPPED overlapped = NULL) const
{
return BOOLToBool(::DeviceIoControl(_handle, controlCode, inBuffer, inSize,
outBuffer, outSize, bytesReturned, overlapped));
}
bool DeviceIoControlOut(DWORD controlCode, LPVOID outBuffer, DWORD outSize, LPDWORD bytesReturned) const
{
return DeviceIoControl(controlCode, NULL, 0, outBuffer, outSize, bytesReturned);
}
bool DeviceIoControlOut(DWORD controlCode, LPVOID outBuffer, DWORD outSize) const
{
DWORD bytesReturned;
return DeviceIoControlOut(controlCode, outBuffer, outSize, &bytesReturned);
}
public:
#ifdef SUPPORT_DEVICE_FILE
bool IsDeviceFile;
bool SizeDefined;
UInt64 Size; // it can be larger than real available size
#endif
CFileBase(): _handle(INVALID_HANDLE_VALUE) {};
~CFileBase() { Close(); }
bool Close() throw();
bool GetPosition(UInt64 &position) const throw();
bool GetLength(UInt64 &length) const throw();
bool Seek(Int64 distanceToMove, DWORD moveMethod, UInt64 &newPosition) const throw();
bool Seek(UInt64 position, UInt64 &newPosition) const throw();
bool SeekToBegin() const throw();
bool SeekToEnd(UInt64 &newPosition) const throw();
bool GetFileInformation(BY_HANDLE_FILE_INFORMATION *info) const
{ return BOOLToBool(GetFileInformationByHandle(_handle, info)); }
static bool GetFileInformation(CFSTR path, BY_HANDLE_FILE_INFORMATION *info)
{
NIO::CFileBase file;
if (!file.Create(path, 0, FILE_SHARE_READ, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS))
return false;
return file.GetFileInformation(info);
}
};
#ifndef UNDER_CE
#define IOCTL_CDROM_BASE FILE_DEVICE_CD_ROM
#define IOCTL_CDROM_GET_DRIVE_GEOMETRY CTL_CODE(IOCTL_CDROM_BASE, 0x0013, METHOD_BUFFERED, FILE_READ_ACCESS)
// #define IOCTL_CDROM_MEDIA_REMOVAL CTL_CODE(IOCTL_CDROM_BASE, 0x0201, METHOD_BUFFERED, FILE_READ_ACCESS)
// IOCTL_DISK_GET_DRIVE_GEOMETRY_EX works since WinXP
#define my_IOCTL_DISK_GET_DRIVE_GEOMETRY_EX CTL_CODE(IOCTL_DISK_BASE, 0x0028, METHOD_BUFFERED, FILE_ANY_ACCESS)
struct my_DISK_GEOMETRY_EX
{
DISK_GEOMETRY Geometry;
LARGE_INTEGER DiskSize;
BYTE Data[1];
};
#endif
class CInFile: public CFileBase
{
#ifdef SUPPORT_DEVICE_FILE
#ifndef UNDER_CE
bool GetGeometry(DISK_GEOMETRY *res) const
{ return DeviceIoControlOut(IOCTL_DISK_GET_DRIVE_GEOMETRY, res, sizeof(*res)); }
bool GetGeometryEx(my_DISK_GEOMETRY_EX *res) const
{ return DeviceIoControlOut(my_IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, res, sizeof(*res)); }
bool GetCdRomGeometry(DISK_GEOMETRY *res) const
{ return DeviceIoControlOut(IOCTL_CDROM_GET_DRIVE_GEOMETRY, res, sizeof(*res)); }
bool GetPartitionInfo(PARTITION_INFORMATION *res)
{ return DeviceIoControlOut(IOCTL_DISK_GET_PARTITION_INFO, LPVOID(res), sizeof(*res)); }
#endif
void CorrectDeviceSize();
void CalcDeviceSize(CFSTR name);
#endif
public:
bool Open(CFSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes);
bool OpenShared(CFSTR fileName, bool shareForWrite);
bool Open(CFSTR fileName);
#ifndef UNDER_CE
bool OpenReparse(CFSTR fileName)
{
// 17.02 fix: to support Windows XP compatibility junctions:
// we use Create() with (desiredAccess = 0) instead of Open() with GENERIC_READ
return
Create(fileName, 0,
// Open(fileName,
FILE_SHARE_READ, OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS);
}
#endif
bool Read1(void *data, UInt32 size, UInt32 &processedSize) throw();
bool ReadPart(void *data, UInt32 size, UInt32 &processedSize) throw();
bool Read(void *data, UInt32 size, UInt32 &processedSize) throw();
};
class COutFile: public CFileBase
{
public:
bool Open(CFSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes);
bool Open(CFSTR fileName, DWORD creationDisposition);
bool Create(CFSTR fileName, bool createAlways);
bool CreateAlways(CFSTR fileName, DWORD flagsAndAttributes);
bool SetTime(const FILETIME *cTime, const FILETIME *aTime, const FILETIME *mTime) throw();
bool SetMTime(const FILETIME *mTime) throw();
bool WritePart(const void *data, UInt32 size, UInt32 &processedSize) throw();
bool Write(const void *data, UInt32 size, UInt32 &processedSize) throw();
bool SetEndOfFile() throw();
bool SetLength(UInt64 length) throw();
};
}}}
#endif
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