diff options
Diffstat (limited to 'CPP/Windows/FileIO.cpp')
| -rw-r--r--[-rwxr-xr-x] | CPP/Windows/FileIO.cpp | 293 |
1 files changed, 170 insertions, 123 deletions
diff --git a/CPP/Windows/FileIO.cpp b/CPP/Windows/FileIO.cpp index e8f98747..188f85fe 100755..100644 --- a/CPP/Windows/FileIO.cpp +++ b/CPP/Windows/FileIO.cpp @@ -2,88 +2,35 @@ #include "StdAfx.h" +#ifdef SUPPORT_DEVICE_FILE +#include "../../C/Alloc.h" +#endif + #include "FileIO.h" +#include "FileName.h" #ifndef _UNICODE extern bool g_IsNT; #endif +using namespace NWindows; +using namespace NFile; +using namespace NName; + namespace NWindows { namespace NFile { #ifdef SUPPORT_DEVICE_FILE -bool IsDeviceName(CFSTR n) +namespace NSystem { - #ifdef UNDER_CE - int len = (int)MyStringLen(n); - if (len < 5 || len > 5 || memcmp(n, FTEXT("DSK"), 3 * sizeof(FCHAR)) != 0) - return false; - if (n[4] != ':') - return false; - // for reading use SG_REQ sg; if (DeviceIoControl(dsk, IOCTL_DISK_READ)); - #else - if (n[0] != '\\' || n[1] != '\\' || n[2] != '.' || n[3] != '\\') - return false; - int len = (int)MyStringLen(n); - if (len == 6 && n[5] == ':') - return true; - if (len < 18 || len > 22 || memcmp(n + 4, FTEXT("PhysicalDrive"), 13 * sizeof(FCHAR)) != 0) - return false; - for (int i = 17; i < len; i++) - if (n[i] < '0' || n[i] > '9') - return false; - #endif - return true; -} - -#endif - -#if defined(WIN_LONG_PATH) && defined(_UNICODE) -#define WIN_LONG_PATH2 -#endif - -#ifdef WIN_LONG_PATH -bool GetLongPathBase(CFSTR s, UString &res) -{ - res.Empty(); - int len = MyStringLen(s); - FChar c = s[0]; - if (len < 1 || c == '\\' || c == '.' && (len == 1 || len == 2 && s[1] == '.')) - return true; - UString curDir; - bool isAbs = false; - if (len > 3) - isAbs = (s[1] == ':' && s[2] == '\\' && (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')); - - if (!isAbs) - { - WCHAR temp[MAX_PATH + 2]; - temp[0] = 0; - DWORD needLength = ::GetCurrentDirectoryW(MAX_PATH + 1, temp); - if (needLength == 0 || needLength > MAX_PATH) - return false; - curDir = temp; - if (curDir.Back() != L'\\') - curDir += L'\\'; - } - res = UString(L"\\\\?\\") + curDir + fs2us(s); - return true; -} - -bool GetLongPath(CFSTR path, UString &longPath) -{ - if (GetLongPathBase(path, longPath)) - return !longPath.IsEmpty(); - return false; +bool MyGetDiskFreeSpace(CFSTR rootPath, UInt64 &clusterSize, UInt64 &totalSize, UInt64 &freeSize); } #endif namespace NIO { -CFileBase::~CFileBase() { Close(); } - -bool CFileBase::Create(CFSTR fileName, DWORD desiredAccess, +bool CFileBase::Create(CFSTR path, DWORD desiredAccess, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes) { if (!Close()) @@ -96,19 +43,20 @@ bool CFileBase::Create(CFSTR fileName, DWORD desiredAccess, #ifndef _UNICODE if (!g_IsNT) { - _handle = ::CreateFile(fs2fas(fileName), desiredAccess, shareMode, + _handle = ::CreateFile(fs2fas(path), desiredAccess, shareMode, (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, flagsAndAttributes, (HANDLE)NULL); } else #endif { - _handle = ::CreateFileW(fs2us(fileName), desiredAccess, shareMode, + IF_USE_MAIN_PATH + _handle = ::CreateFileW(fs2us(path), desiredAccess, shareMode, (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, flagsAndAttributes, (HANDLE)NULL); #ifdef WIN_LONG_PATH - if (_handle == INVALID_HANDLE_VALUE) + if (_handle == INVALID_HANDLE_VALUE && USE_SUPER_PATH) { UString longPath; - if (GetLongPath(fileName, longPath)) + if (GetSuperPath(path, longPath, USE_MAIN_PATH)) _handle = ::CreateFileW(longPath, desiredAccess, shareMode, (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, flagsAndAttributes, (HANDLE)NULL); } @@ -135,9 +83,9 @@ bool CFileBase::GetPosition(UInt64 &position) const bool CFileBase::GetLength(UInt64 &length) const { #ifdef SUPPORT_DEVICE_FILE - if (IsDeviceFile && LengthDefined) + if (IsDeviceFile && SizeDefined) { - length = Length; + length = Size; return true; } #endif @@ -154,95 +102,192 @@ bool CFileBase::GetLength(UInt64 &length) const bool CFileBase::Seek(Int64 distanceToMove, DWORD moveMethod, UInt64 &newPosition) const { #ifdef SUPPORT_DEVICE_FILE - if (IsDeviceFile && LengthDefined && moveMethod == FILE_END) + if (IsDeviceFile && SizeDefined && moveMethod == FILE_END) { - distanceToMove += Length; + distanceToMove += Size; moveMethod = FILE_BEGIN; } #endif - LARGE_INTEGER value; - value.QuadPart = distanceToMove; - value.LowPart = ::SetFilePointer(_handle, value.LowPart, &value.HighPart, moveMethod); - if (value.LowPart == 0xFFFFFFFF) + LONG high = (LONG)(distanceToMove >> 32); + DWORD low = ::SetFilePointer(_handle, (LONG)(distanceToMove & 0xFFFFFFFF), &high, moveMethod); + if (low == 0xFFFFFFFF) if (::GetLastError() != NO_ERROR) return false; - newPosition = value.QuadPart; + newPosition = (((UInt64)high) << 32) + low; return true; } -bool CFileBase::Seek(UInt64 position, UInt64 &newPosition) +bool CFileBase::Seek(UInt64 position, UInt64 &newPosition) const { return Seek(position, FILE_BEGIN, newPosition); } -bool CFileBase::SeekToBegin() +bool CFileBase::SeekToBegin() const { UInt64 newPosition; return Seek(0, newPosition); } -bool CFileBase::SeekToEnd(UInt64 &newPosition) +bool CFileBase::SeekToEnd(UInt64 &newPosition) const { return Seek(0, FILE_END, newPosition); } -/* -bool CFileBase::GetFileInformation(CByHandleFileInfo &fi) const -{ - BY_HANDLE_FILE_INFORMATION wfi; - if (!::GetFileInformationByHandle(_handle, &wfi)) - return false; - fi.Attrib = wfi.dwFileAttributes; - fi.CTime = wfi.ftCreationTime; - fi.ATime = wfi.ftLastAccessTime; - fi.MTime = wfi.ftLastWriteTime; - fi.Size = (((UInt64)wfi.nFileSizeHigh) << 32) + wfi.nFileSizeLow; - fi.VolumeSerialNumber = wfi.dwVolumeSerialNumber; - fi.NumLinks = wfi.nNumberOfLinks; - fi.FileIndex = (((UInt64)wfi.nFileIndexHigh) << 32) + wfi.nFileIndexLow; - return true; -} -*/ - -///////////////////////// -// CInFile +// ---------- CInFile --------- #ifdef SUPPORT_DEVICE_FILE -void CInFile::GetDeviceLength() + +void CInFile::CorrectDeviceSize() { - if (_handle != INVALID_HANDLE_VALUE && IsDeviceFile) + // maybe we must decrease kClusterSize to 1 << 12, if we want correct size at tail + static const UInt32 kClusterSize = 1 << 14; + UInt64 pos = Size & ~(UInt64)(kClusterSize - 1); + UInt64 realNewPosition; + if (!Seek(pos, realNewPosition)) + return; + Byte *buf = (Byte *)MidAlloc(kClusterSize); + + bool needbackward = true; + + for (;;) { - #ifdef UNDER_CE - LengthDefined = true; - Length = 128 << 20; + UInt32 processed = 0; + // up test is slow for "PhysicalDrive". + // processed size for latest block for "PhysicalDrive0" is 0. + if (!Read1(buf, kClusterSize, processed)) + break; + if (processed == 0) + break; + needbackward = false; + Size = pos + processed; + if (processed != kClusterSize) + break; + pos += kClusterSize; + } + + if (needbackward && pos != 0) + { + pos -= kClusterSize; + for (;;) + { + // break; + if (!Seek(pos, realNewPosition)) + break; + if (!buf) + { + buf = (Byte *)MidAlloc(kClusterSize); + if (!buf) + break; + } + UInt32 processed = 0; + // that code doesn't work for "PhysicalDrive0" + if (!Read1(buf, kClusterSize, processed)) + break; + if (processed != 0) + { + Size = pos + processed; + break; + } + if (pos == 0) + break; + pos -= kClusterSize; + } + } + MidFree(buf); +} - #else - PARTITION_INFORMATION partInfo; - LengthDefined = true; - Length = 0; - if (GetPartitionInfo(&partInfo)) - Length = partInfo.PartitionLength.QuadPart; +void CInFile::CalcDeviceSize(CFSTR s) +{ + SizeDefined = false; + Size = 0; + if (_handle == INVALID_HANDLE_VALUE || !IsDeviceFile) + return; + #ifdef UNDER_CE + + SizeDefined = true; + Size = 128 << 20; + + #else + + PARTITION_INFORMATION partInfo; + bool needCorrectSize = true; + + /* + WinXP 64-bit: + + HDD \\.\PhysicalDrive0 (MBR): + GetPartitionInfo == GeometryEx : corrrect size? (includes tail) + Geometry : smaller than GeometryEx (no tail, maybe correct too?) + MyGetDiskFreeSpace : FAIL + Size correction is slow and block size (kClusterSize) must be small? + + HDD partition \\.\N: (NTFS): + MyGetDiskFreeSpace : Size of NTFS clusters. Same size can be calculated after correction + GetPartitionInfo : size of partition data: NTFS clusters + TAIL; TAIL contains extra empty sectors and copy of first sector of NTFS + Geometry / CdRomGeometry / GeometryEx : size of HDD (not that partition) + + CD-ROM drive (ISO): + MyGetDiskFreeSpace : correct size. Same size can be calculated after correction + Geometry == CdRomGeometry : smaller than corrrect size + GetPartitionInfo == GeometryEx : larger than corrrect size + + Floppy \\.\a: (FAT): + Geometry : correct size. + CdRomGeometry / GeometryEx / GetPartitionInfo / MyGetDiskFreeSpace - FAIL + correction works OK for FAT. + correction works OK for non-FAT, if kClusterSize = 512. + */ + + if (GetPartitionInfo(&partInfo)) + { + Size = partInfo.PartitionLength.QuadPart; + SizeDefined = true; + needCorrectSize = false; + if ((s)[0] == '\\' && (s)[1] == '\\' && (s)[2] == '.' && (s)[3] == '\\' && (s)[5] == ':' && (s)[6] == 0) + { + FChar path[4] = { s[4], ':', '\\', 0 }; + UInt64 clusterSize, totalSize, freeSize; + if (NSystem::MyGetDiskFreeSpace(path, clusterSize, totalSize, freeSize)) + Size = totalSize; + else + needCorrectSize = true; + } + } + + if (!SizeDefined) + { + my_DISK_GEOMETRY_EX geomEx; + SizeDefined = GetGeometryEx(&geomEx); + if (SizeDefined) + Size = geomEx.DiskSize.QuadPart; else { DISK_GEOMETRY geom; - if (!GetGeometry(&geom)) - if (!GetCdRomGeometry(&geom)) - LengthDefined = false; - if (LengthDefined) - Length = geom.Cylinders.QuadPart * geom.TracksPerCylinder * geom.SectorsPerTrack * geom.BytesPerSector; + SizeDefined = GetGeometry(&geom); + if (!SizeDefined) + SizeDefined = GetCdRomGeometry(&geom); + if (SizeDefined) + Size = geom.Cylinders.QuadPart * geom.TracksPerCylinder * geom.SectorsPerTrack * geom.BytesPerSector; } - // SeekToBegin(); - #endif } + + if (needCorrectSize && SizeDefined && Size != 0) + { + CorrectDeviceSize(); + SeekToBegin(); + } + + // SeekToBegin(); + #endif } // ((desiredAccess & (FILE_WRITE_DATA | FILE_APPEND_DATA | GENERIC_WRITE)) == 0 && #define MY_DEVICE_EXTRA_CODE \ - IsDeviceFile = IsDeviceName(fileName); \ - GetDeviceLength(); + IsDeviceFile = IsDevicePath(fileName); \ + CalcDeviceSize(fileName); #else #define MY_DEVICE_EXTRA_CODE #endif @@ -305,8 +350,7 @@ bool CInFile::Read(void *data, UInt32 size, UInt32 &processedSize) return true; } -///////////////////////// -// COutFile +// ---------- COutFile --------- static inline DWORD GetCreationDisposition(bool createAlways) { return createAlways? CREATE_ALWAYS: CREATE_NEW; } @@ -320,6 +364,9 @@ bool COutFile::Open(CFSTR fileName, DWORD creationDisposition) bool COutFile::Create(CFSTR fileName, bool createAlways) { return Open(fileName, GetCreationDisposition(createAlways)); } +bool COutFile::CreateAlways(CFSTR fileName, DWORD flagsAndAttributes) + { return Open(fileName, FILE_SHARE_READ, GetCreationDisposition(true), flagsAndAttributes); } + bool COutFile::SetTime(const FILETIME *cTime, const FILETIME *aTime, const FILETIME *mTime) { return BOOLToBool(::SetFileTime(_handle, cTime, aTime, mTime)); } |