/// <summary>
/// Initializes a new instance of the <see cref="NativeFileStream"/> class.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <param name="fileMode">The file mode.</param>
/// <param name="access">The access mode.</param>
/// <param name="share">The share mode.</param>
public unsafe NativeFileStream(string fileName, NativeFileMode fileMode, NativeFileAccess access, NativeFileShare share = NativeFileShare.Read)
{
#if W8CORE
//uint newAccess = 0;
//const int FILE_ATTRIBUTE_NORMAL = 0x00000080;
//const int FILE_FLAG_RANDOM_ACCESS = 0x10000000;
//const int FILE_FLAG_SEQUENTIAL_SCAN = 0x08000000;
//var extendedParams = default(NativeFile.CREATEFILE2_EXTENDED_PARAMETERS);
//extendedParams.dwSize = (uint)Utilities.SizeOf<NativeFile.CREATEFILE2_EXTENDED_PARAMETERS>();
//extendedParams.dwFileAttributes = FILE_ATTRIBUTE_NORMAL;
//extendedParams.dwFileFlags = FILE_FLAG_RANDOM_ACCESS;
//extendedParams.dwSecurityQosFlags = 0;
//extendedParams.lpSecurityAttributes = IntPtr.Zero;
//extendedParams.hTemplateFile = IntPtr.Zero;
//if ((access & NativeFileAccess.Read) != 0)
//{
// // Sets GENERIC_READ
// newAccess |= 0x00120089;
//}
//if ((access & NativeFileAccess.Write) != 0)
//{
// newAccess |= 0x00120116;
//}
//if ((access & NativeFileAccess.Execute) != 0)
//{
// newAccess |= 0x001200a0;
//}
//handle = NativeFile.Create(fileName, (NativeFileAccess)newAccess, share, fileMode, new IntPtr(&extendedParams));
handle = NativeFile.Create(fileName, access, share, fileMode, IntPtr.Zero);
#else
handle = NativeFile.Create(fileName, access, share, IntPtr.Zero, fileMode, NativeFileOptions.None, IntPtr.Zero);
#endif
if (handle == new IntPtr(-1))
{
var lastWin32Error = MarshalGetLastWin32Error();
if (lastWin32Error == 2)
{
throw new FileNotFoundException("Unable to find file", fileName);
}
var lastError = Result.GetResultFromWin32Error(lastWin32Error);
throw new IOException(string.Format(CultureInfo.InvariantCulture, "Unable to open file {0}", fileName), lastError.Code);
}
canRead = 0 != (access & NativeFileAccess.Read);
canWrite = 0 != (access & NativeFileAccess.Write);
// TODO how setup correctly canSeek flags?
// Kernel32.GetFileType(SafeFileHandle handle); is not available on W8CORE
canSeek = true;
}
/// <summary>
/// Initializes a new instance of the <see cref="NativeFileStream"/> class.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <param name="fileMode">The file mode.</param>
/// <param name="access">The access mode.</param>
/// <param name="share">The share mode.</param>
public unsafe NativeFileStream(string fileName, NativeFileMode fileMode, NativeFileAccess access, NativeFileShare share = NativeFileShare.Read)
{
handle = NativeFile.Create(fileName, access, share, IntPtr.Zero, fileMode, NativeFileOptions.None, IntPtr.Zero);
if (handle == new IntPtr(-1))
{
var lastWin32Error = MarshalGetLastWin32Error();
if (lastWin32Error == 2)
{
throw new FileNotFoundException("Unable to find file", fileName);
}
var lastError = Result.GetResultFromWin32Error(lastWin32Error);
throw new IOException(string.Format(CultureInfo.InvariantCulture, "Unable to open file {0}", fileName), lastError.Code);
}
canRead = 0 != (access & NativeFileAccess.Read);
canWrite = 0 != (access & NativeFileAccess.Write);
// TODO how setup correctly canSeek flags?
// Kernel32.GetFileType(SafeFileHandle handle); is not available on W8CORE
canSeek = true;
}
public NativeFileStream(string fileName, NativeFileMode fileMode, NativeFileAccess access, NativeFileShare share = NativeFileShare.Read)
{
this.handle = NativeFile.Create(fileName, access, share, IntPtr.Zero, fileMode, NativeFileOptions.None, IntPtr.Zero);
if (this.handle == new IntPtr(-1))
{
int lastWin32Error = NativeFileStream.MarshalGetLastWin32Error();
if (lastWin32Error == 2)
{
throw new FileNotFoundException("Unable to find file", fileName);
}
Result resultFromWin32Error = Result.GetResultFromWin32Error(lastWin32Error);
throw new IOException(string.Format((IFormatProvider)CultureInfo.InvariantCulture, "Unable to open file {0}", new object[1]
{
(object)fileName
}), resultFromWin32Error.Code);
}
else
{
this.canRead = (NativeFileAccess)0 != (access & NativeFileAccess.Read);
this.canWrite = (NativeFileAccess)0 != (access & NativeFileAccess.Write);
this.canSeek = true;
}
}
