Adjust Token

AdjustTokenPrivileges.cs

// Luid Structure Definition
[StructLayout(LayoutKind.Sequential)]
public struct LUID
{
public UInt32 LowPart;
public Int32 HighPart;
}

[StructLayout(LayoutKind.Sequential)]
public struct LUID_AND_ATTRIBUTES
{
public LUID Luid;
public UInt32 Attributes;

public const UInt32 SE_PRIVILEGE_ENABLED_BY_DEFAULT = 0x00000001;
public const UInt32 SE_PRIVILEGE_ENABLED = 0x00000002;
public const UInt32 SE_PRIVILEGE_REMOVED = 0x00000004;
public const UInt32 SE_PRIVILEGE_USED_FOR_ACCESS = 0x80000000;
}

private const int ANYSIZE_ARRAY = 1;

// Token_Privileges Structure Definition
public struct TOKEN_PRIVILEGES
{
public int PrivilegeCount;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = ANYSIZE_ARRAY)]
public LUID_AND_ATTRIBUTES[] Privileges;
}

// AdjustTokenPrivileges
[DllImport("advapi32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool AdjustTokenPrivileges(IntPtr TokenHandle,
[MarshalAs(UnmanagedType.Bool)]bool DisableAllPrivileges,
ref TOKEN_PRIVILEGES NewState,
UInt32 BufferLengthInBytes,
ref TOKEN_PRIVILEGES PreviousState,
out UInt32 ReturnLengthInBytes);