public BackupFileStream(string path, FileMode mode)
: this(File.CreateFileCore(null, path, ExtendedFileAttributes.Normal, null, mode, FileSystemRights.Read | FileSystemRights.Write, FileShare.None, true, PathFormat.RelativePath), FileSystemRights.Read | FileSystemRights.Write)
{
}
public BackupFileStream(string path, FileMode mode, FileSystemRights access, FileShare share, ExtendedFileAttributes attributes)
: this(File.CreateFileCore(null, path, attributes, null, mode, access, share, true, PathFormat.RelativePath), access)
{
}
public BackupFileStream(KernelTransaction transaction, string path, FileMode mode, FileSystemRights access, FileShare share, ExtendedFileAttributes attributes, FileSecurity security)
: this(File.CreateFileCore(transaction, path, attributes, security, mode, access, share, true, PathFormat.RelativePath), access)
{
}
public BackupFileStream(KernelTransaction transaction, string path, FileMode mode, FileSystemRights access)
: this(File.CreateFileCore(transaction, path, ExtendedFileAttributes.Normal, null, mode, access, FileShare.None, true, PathFormat.RelativePath), access)
{
}
internal static IEnumerable <FileIdBothDirectoryInfo> EnumerateFileIdBothDirectoryInfoCore(KernelTransaction transaction, SafeFileHandle safeHandle, string path, FileShare shareMode, bool continueOnException, PathFormat pathFormat)
{
if (!NativeMethods.IsAtLeastWindowsVista)
{
throw new PlatformNotSupportedException(Resources.Requires_Windows_Vista_Or_Higher);
}
bool callerHandle = safeHandle != null;
if (!callerHandle)
{
if (Utils.IsNullOrWhiteSpace(path))
{
throw new ArgumentNullException("path");
}
string pathLp = Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.RemoveTrailingDirectorySeparator | GetFullPathOptions.FullCheck);
safeHandle = File.CreateFileCore(transaction, pathLp, ExtendedFileAttributes.BackupSemantics, null, FileMode.Open, FileSystemRights.ReadData, shareMode, true, PathFormat.LongFullPath);
}
try
{
if (!NativeMethods.IsValidHandle(safeHandle, Marshal.GetLastWin32Error(), !continueOnException))
{
yield break;
}
var fileNameOffset = (int)Marshal.OffsetOf(typeof(NativeMethods.FILE_ID_BOTH_DIR_INFO), "FileName");
using (var safeBuffer = new SafeGlobalMemoryBufferHandle(NativeMethods.DefaultFileBufferSize))
{
while (true)
{
if (!NativeMethods.GetFileInformationByHandleEx(safeHandle, NativeMethods.FileInfoByHandleClass.FileIdBothDirectoryInfo, safeBuffer, (uint)safeBuffer.Capacity))
{
uint lastError = (uint)Marshal.GetLastWin32Error();
switch (lastError)
{
case Win32Errors.ERROR_SUCCESS:
case Win32Errors.ERROR_NO_MORE_FILES:
case Win32Errors.ERROR_HANDLE_EOF:
yield break;
case Win32Errors.ERROR_MORE_DATA:
continue;
default:
NativeError.ThrowException(lastError, path);
yield break; // we should never get to this yield break.
}
}
int offset = 0;
NativeMethods.FILE_ID_BOTH_DIR_INFO fibdi;
do
{
fibdi = safeBuffer.PtrToStructure <NativeMethods.FILE_ID_BOTH_DIR_INFO>(offset);
string fileName = safeBuffer.PtrToStringUni(offset + fileNameOffset, (int)(fibdi.FileNameLength / 2));
if (!fileName.Equals(Path.CurrentDirectoryPrefix, StringComparison.OrdinalIgnoreCase) &&
!fileName.Equals(Path.ParentDirectoryPrefix, StringComparison.OrdinalIgnoreCase))
{
yield return(new FileIdBothDirectoryInfo(fibdi, fileName));
}
offset += fibdi.NextEntryOffset;
}while (fibdi.NextEntryOffset != 0);
}
}
}
finally
{
// Handle is ours, dispose.
if (!callerHandle && safeHandle != null)
{
safeHandle.Close();
}
}
}
private static SafeFileHandle OpenDirectoryJunction(KernelTransaction transaction, string junctionPath, PathFormat pathFormat)
{
return(File.CreateFileCore(transaction, junctionPath, ExtendedFileAttributes.BackupSemantics | ExtendedFileAttributes.OpenReparsePoint, null, FileMode.Open, FileSystemRights.WriteData, FileShare.ReadWrite, false, false, pathFormat));
}
internal static void ToggleCompressionCore(KernelTransaction transaction, string path, bool compress, PathFormat pathFormat)
{
using (var handle = File.CreateFileCore(transaction, null, path, ExtendedFileAttributes.BackupSemantics, null, FileMode.Open, FileSystemRights.Modify, FileShare.None, true, false, pathFormat))
InvokeIoControlUnknownSize(handle, NativeMethods.FSCTL_SET_COMPRESSION, compress ? 1 : 0);
}
