internal static extern NTSTATUS NtQueryDirectoryFile(
SafeFileHandle fileHandle,
IntPtr eventHandle,
IntPtr apcRoutime,
IntPtr appContext,
ref IO_STATUS_BLOCK ioStatusBlock,
IntPtr FileInformation,
UInt32 length,
FILE_INFORMATION_CLASS fileInformationClass,
[MarshalAs(UnmanagedType.Bool)] bool returnSingleEntry,
IntPtr fileName,
[MarshalAs(UnmanagedType.Bool)] bool restartScan);
public static unsafe extern int NtQueryDirectoryFile(
IntPtr FileHandle,
IntPtr Event,
IntPtr ApcRoutine,
IntPtr ApcContext,
IO_STATUS_BLOCK *IoStatusBlock,
IntPtr FileInformation,
uint Length,
FILE_INFORMATION_CLASS FileInformationClass,
BOOLEAN ReturnSingleEntry,
UNICODE_STRING *FileName,
BOOLEAN RestartScan);
unsafe private static void GetFileInformation(SafeFileHandle fileHandle, FILE_INFORMATION_CLASS fileInformationClass, void *value, uint size)
{
IO_STATUS_BLOCK ioStatus;
NTSTATUS status = Direct.NtQueryInformationFile(
FileHandle: fileHandle,
IoStatusBlock: out ioStatus,
FileInformation: value,
Length: size,
FileInformationClass: fileInformationClass);
if (status != NTSTATUS.STATUS_SUCCESS)
{
throw ErrorHelper.GetIoExceptionForNTStatus(status);
}
}
private static string GetFileInformationString(SafeFileHandle fileHandle, FILE_INFORMATION_CLASS fileInformationClass)
{
return(BufferHelper.CachedInvoke((StringBuffer buffer) =>
{
NTSTATUS status = NTSTATUS.STATUS_BUFFER_OVERFLOW;
uint nameLength = 260 * sizeof(char);
IO_STATUS_BLOCK ioStatus;
var reader = new CheckedReader(buffer);
while (status == NTSTATUS.STATUS_BUFFER_OVERFLOW)
{
// Add space for the FileNameLength
buffer.EnsureByteCapacity(nameLength + sizeof(uint));
unsafe
{
status = Direct.NtQueryInformationFile(
FileHandle: fileHandle,
IoStatusBlock: out ioStatus,
FileInformation: buffer.VoidPointer,
Length: checked ((uint)buffer.ByteCapacity),
FileInformationClass: fileInformationClass);
}
if (status == NTSTATUS.STATUS_SUCCESS || status == NTSTATUS.STATUS_BUFFER_OVERFLOW)
{
reader.ByteOffset = 0;
nameLength = reader.ReadUint();
}
}
if (status != NTSTATUS.STATUS_SUCCESS)
{
throw ErrorHelper.GetIoExceptionForNTStatus(status);
}
// The string isn't null terminated so we have to explicitly pass the size
return reader.ReadString(checked ((int)nameLength) / sizeof(char));
}));
}
private static extern NTSTATUS NtQueryInformationFile(IntPtr FileHandle,
ref IO_STATUS_BLOCK IoStatusBlock, IntPtr FileInformation, int FileInformationLength,
FILE_INFORMATION_CLASS FileInformationClass);
public static extern int NtSetInformationFile(
SafeFileHandle FileHandle,
ref IO_STATUS_BLOCK ioStatus,
IntPtr FileInformation,
Int32 Length,
FILE_INFORMATION_CLASS fileClass);
public static extern IntPtr NtQueryInformationFile(IntPtr fileHandle, ref IO_STATUS_BLOCK IoStatusBlock, IntPtr pInfoBlock, uint length, FILE_INFORMATION_CLASS fileInformation);
private static extern NTSTATUS NtQueryInformationFile(IntPtr FileHandle,
ref IO_STATUS_BLOCK IoStatusBlock, IntPtr FileInformation, int FileInformationLength,
FILE_INFORMATION_CLASS FileInformationClass);
public static extern NTSTATUS NtSetInformationFile(
IntPtr FileHandle,
ref IO_STATUS_BLOCK IoStatusBlock,
ref FILE_CASE_SENSITIVE_INFORMATION FileInformation,
int Length,
FILE_INFORMATION_CLASS FileInformationClass);
unsafe public static extern NTSTATUS NtQueryInformationFile(
SafeFileHandle FileHandle,
out IO_STATUS_BLOCK IoStatusBlock,
void *FileInformation,
uint Length,
FILE_INFORMATION_CLASS FileInformationClass);
public static extern uint NtQueryInformationFile(SafeFileHandle FileHandle, ref IO_STATUS_BLOCK IoStatusBlock, IntPtr FileInformation, uint Length, FILE_INFORMATION_CLASS FileInformationClass);
static extern Int32 NtQueryInformationFile(SafeHandle handle, out IO_STATUS_BLOCK ioStatusBlock,
out FILE_STANDARD_INFORMATION info, Int32 length, FILE_INFORMATION_CLASS fileInformationClass);
static extern uint NtSetInformationFile(IntPtr FileHandle,
IO_STATUS_BLOCK IoStatusBlock,
IntPtr FileInformation,
uint Length,
FILE_INFORMATION_CLASS FileInformationClass);
public static extern IntPtr NtQueryInformationFile(IntPtr fileHandle, ref IO_STATUS_BLOCK IoStatusBlock, IntPtr pInfoBlock, uint length, FILE_INFORMATION_CLASS fileInformation);
internal static extern uint NtQueryInformationFile(SafeFileHandle fileHandle, ref IO_STATUS_BLOCK IoStatusBlock,
IntPtr pInfoBlock, uint length, FILE_INFORMATION_CLASS fileInformation);