internal static VolumeInformation GetVolumeInformation(string rootPath)
{
rootPath = Paths.AddTrailingSeparator(rootPath);
using (var volumeName = new StringBuffer(initialMinCapacity: Paths.MaxPath + 1))
using (var fileSystemName = new StringBuffer(initialMinCapacity: Paths.MaxPath + 1))
{
uint serialNumber, maxComponentLength;
FileSystemFeature flags;
if (!Private.GetVolumeInformationW(rootPath, volumeName, (uint)volumeName.CharCapacity, out serialNumber, out maxComponentLength, out flags, fileSystemName, (uint)fileSystemName.CharCapacity))
{
int lastError = Marshal.GetLastWin32Error();
throw GetIoExceptionForError(lastError, rootPath);
}
volumeName.SetLengthToFirstNull();
fileSystemName.SetLengthToFirstNull();
VolumeInformation info = new VolumeInformation
{
RootPathName = rootPath,
VolumeName = volumeName.ToString(),
VolumeSerialNumber = serialNumber,
MaximumComponentLength = maxComponentLength,
FileSystemFlags = flags,
FileSystemName = fileSystemName.ToString()
};
return(info);
}
}
public unsafe void SetLengthToFirstNullTests(string content, ulong startLength, ulong endLength)
{
using (var buffer = new StringBuffer(content))
{
// With existing content
buffer.Length.Should().Be(startLength);
buffer.SetLengthToFirstNull();
buffer.Length.Should().Be(endLength);
// Clear the buffer & manually copy in
buffer.Length = 0;
fixed (char* contentPointer = content)
{
Buffer.MemoryCopy(contentPointer, buffer.CharPointer, (long)buffer.CharCapacity * 2, content.Length * sizeof(char));
}
buffer.Length.Should().Be(0);
buffer.SetLengthToFirstNull();
buffer.Length.Should().Be(endLength);
}
}
public unsafe void SetLengthToFirstNullEmptyBuffer()
{
using (var buffer = new StringBuffer())
{
buffer.SetLengthToFirstNull();
buffer.Length.Should().Be(0);
}
}
public unsafe void SetLengthToFirstNullNoNull()
{
using (var buffer = new StringBuffer("A"))
{
// Wipe out the last null
buffer.CharPointer[buffer.Length] = 'B';
buffer.SetLengthToFirstNull();
buffer.Length.Should().Be(1);
}
}
