using System; using System.Runtime.InteropServices; using Vanara.InteropServices; namespace Vanara.PInvoke { /// Platform invokable enumerated types, constants and functions from ntdll.h public static partial class NtDll { /// The type of process information to be retrieved. [PInvokeData("winternl.h", MSDNShortId = "0eae7899-c40b-4a5f-9e9c-adae021885e7")] public enum PROCESSINFOCLASS { /// /// Retrieves a pointer to a PEB structure that can be used to determine whether the specified process is being debugged, and a /// unique value used by the system to identify the specified process. /// Use the CheckRemoteDebuggerPresent and GetProcessId functions to obtain this information. /// [CorrespondingType(typeof(PROCESS_BASIC_INFORMATION), CorrespondingAction.Get)] ProcessBasicInformation = 0, /// /// Retrieves a DWORD_PTR value that is the port number of the debugger for the process. A nonzero value indicates that the /// process is being run under the control of a ring 3 debugger. /// Use the CheckRemoteDebuggerPresent or IsDebuggerPresent function. /// [CorrespondingType(typeof(IntPtr), CorrespondingAction.Get)] ProcessDebugPort = 7, /// /// Determines whether the process is running in the WOW64 environment (WOW64 is the x86 emulator that allows Win32-based /// applications to run on 64-bit Windows). /// Use the IsWow64Process2 function to obtain this information. /// [CorrespondingType(typeof(BOOL), CorrespondingAction.Get)] ProcessWow64Information = 26, /// /// Retrieves a UNICODE_STRING value containing the name of the image file for the process. /// Use the QueryFullProcessImageName or GetProcessImageFileName function to obtain this information. /// [CorrespondingType(typeof(UNICODE_STRING), CorrespondingAction.Get)] ProcessImageFileName = 27, /// /// Retrieves a ULONG value indicating whether the process is considered critical. /// /// Note This value can be used starting in Windows XP with SP3. Starting in Windows 8.1, IsProcessCritical should be used instead. /// /// [CorrespondingType(typeof(BOOL), CorrespondingAction.Get)] ProcessBreakOnTermination = 29, /// /// Retrieves a SUBSYSTEM_INFORMATION_TYPE value indicating the subsystem type of the process. The buffer pointed to by the /// ProcessInformation parameter should be large enough to hold a single SUBSYSTEM_INFORMATION_TYPE enumeration. /// [CorrespondingType(typeof(SUBSYSTEM_INFORMATION_TYPE), CorrespondingAction.Get)] ProcessSubsystemInformation = 75, } /// /// Indicates the type of subsystem for a process or thread. This enumeration is used in NtQueryInformationProcess and /// NtQueryInformationThread calls. /// // https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/ntddk/ne-ntddk-_subsystem_information_type typedef enum // _SUBSYSTEM_INFORMATION_TYPE { SubsystemInformationTypeWin32, SubsystemInformationTypeWSL, MaxSubsystemInformationType } // SUBSYSTEM_INFORMATION_TYPE, *PSUBSYSTEM_INFORMATION_TYPE; [PInvokeData("ntddk.h", MSDNShortId = "B1E334BF-AAB3-410D-8D10-A750E8459E42")] public enum SUBSYSTEM_INFORMATION_TYPE { /// The subsystem type for the process or thread is Win32. SubsystemInformationTypeWin32, /// /// The subsystem type for the process or thread is Windows Subsystem for Linux (WSL). For this process, these members of the /// PS_CREATE_NOTIFY_INFO structure are set as follows: The preceding member values may be NULL. /// SubsystemInformationTypeWSL, /// Reserved. MaxSubsystemInformationType, } /// /// /// [ NtQueryInformationProcess may be altered or unavailable in future versions of Windows. Applications should use the /// alternate functions listed in this topic.] /// /// Retrieves information about the specified process. /// /// A handle to the process for which information is to be retrieved. /// /// /// The type of process information to be retrieved. This parameter can be one of the following values from the /// PROCESSINFOCLASS enumeration. /// /// /// /// Value /// Meaning /// /// /// ProcessBasicInformation
0 /// /// Retrieves a pointer to a PEB structure that can be used to determine whether the specified process is being debugged, and a /// unique value used by the system to identify the specified process. Use the CheckRemoteDebuggerPresent and GetProcessId functions /// to obtain this information. /// /// /// /// ProcessDebugPort
7 /// /// Retrieves a DWORD_PTR value that is the port number of the debugger for the process. A nonzero value indicates that the process /// is being run under the control of a ring 3 debugger. Use the CheckRemoteDebuggerPresent or IsDebuggerPresent function. /// /// /// /// ProcessWow64Information
26 /// /// Determines whether the process is running in the WOW64 environment (WOW64 is the x86 emulator that allows Win32-based /// applications to run on 64-bit Windows). Use the IsWow64Process2 function to obtain this information. /// /// /// /// ProcessImageFileName
27 /// /// Retrieves a UNICODE_STRING value containing the name of the image file for the process. Use the QueryFullProcessImageName or /// GetProcessImageFileName function to obtain this information. /// /// /// /// ProcessBreakOnTermination
29 /// Retrieves a ULONG value indicating whether the process is considered critical. /// /// /// ProcessSubsystemInformation
75 /// /// Retrieves a SUBSYSTEM_INFORMATION_TYPE value indicating the subsystem type of the process. The buffer pointed to by the /// ProcessInformation parameter should be large enough to hold a single SUBSYSTEM_INFORMATION_TYPE enumeration. /// /// /// /// /// /// /// A pointer to a buffer supplied by the calling application into which the function writes the requested information. The size of /// the information written varies depending on the data type of the ProcessInformationClass parameter: /// /// PROCESS_BASIC_INFORMATION /// /// When the ProcessInformationClass parameter is ProcessBasicInformation, the buffer pointed to by the ProcessInformation /// parameter should be large enough to hold a single PROCESS_BASIC_INFORMATION structure having the following layout: /// /// /// /// The UniqueProcessId member points to the system's unique identifier for this process. Use the GetProcessId function to /// retrieve this information. /// /// The PebBaseAddress member points to a PEB structure. /// The other members of this structure are reserved for internal use by the operating system. /// ULONG_PTR /// /// When the ProcessInformationClass parameter is ProcessWow64Information, the buffer pointed to by the ProcessInformation /// parameter should be large enough to hold a ULONG_PTR. If this value is nonzero, the process is running in a WOW64 /// environment; otherwise, if the value is equal to zero, the process is not running in a WOW64 environment. /// /// Use the IsWow64Process2 function to determine whether a process is running in the WOW64 environment. /// UNICODE_STRING /// /// When the ProcessInformationClass parameter is ProcessImageFileName, the buffer pointed to by the ProcessInformation /// parameter should be large enough to hold a UNICODE_STRING structure as well as the string itself. The string stored in /// the Buffer member is the name of the image file. /// /// /// If the buffer is too small, the function fails with the STATUS_INFO_LENGTH_MISMATCH error code and the ReturnLength parameter is /// set to the required buffer size. /// /// /// The size of the buffer pointed to by the ProcessInformation parameter, in bytes. /// /// A pointer to a variable in which the function returns the size of the requested information. If the function was successful, /// this is the size of the information written to the buffer pointed to by the ProcessInformation parameter, but if the buffer was /// too small, this is the minimum size of buffer needed to receive the information successfully. /// /// /// The function returns an NTSTATUS success or error code. /// /// The forms and significance of NTSTATUS error codes are listed in the Ntstatus.h header file available in the DDK, and are /// described in the DDK documentation under Kernel-Mode Driver Architecture / Design Guide / Driver Programming Techniques / /// Logging Errors. /// /// /// /// /// The NtQueryInformationProcess function and the structures that it returns are internal to the operating system and /// subject to change from one release of Windows to another. To maintain the compatibility of your application, it is better to use /// public functions mentioned in the description of the ProcessInformationClass parameter instead. /// /// /// If you do use NtQueryInformationProcess, access the function through run-time dynamic linking. This gives your code an /// opportunity to respond gracefully if the function has been changed or removed from the operating system. Signature changes, /// however, may not be detectable. /// /// /// This function has no associated import library. You must use the LoadLibrary and GetProcAddress functions to dynamically link to Ntdll.dll. /// /// // https://docs.microsoft.com/en-us/windows/win32/api/winternl/nf-winternl-ntqueryinformationprocess __kernel_entry NTSTATUS // NtQueryInformationProcess( IN HANDLE ProcessHandle, IN PROCESSINFOCLASS ProcessInformationClass, OUT PVOID ProcessInformation, IN // ULONG ProcessInformationLength, OUT PULONG ReturnLength ); [DllImport(Lib.NtDll, SetLastError = false, ExactSpelling = true)] [PInvokeData("winternl.h", MSDNShortId = "0eae7899-c40b-4a5f-9e9c-adae021885e7")] public static extern NTStatus NtQueryInformationProcess([In] HPROCESS ProcessHandle, PROCESSINFOCLASS ProcessInformationClass, [Out] IntPtr ProcessInformation, uint ProcessInformationLength, out uint ReturnLength); /// /// Retrieves information about the specified process. /// /// The type of the structure to retrieve. /// A handle to the process for which information is to be retrieved. /// /// /// The type of process information to be retrieved. This parameter can be one of the following values from the /// PROCESSINFOCLASS enumeration. /// /// /// /// Value /// Meaning /// /// /// ProcessBasicInformation
0 /// /// Retrieves a pointer to a PEB structure that can be used to determine whether the specified process is being debugged, and a /// unique value used by the system to identify the specified process. Use the CheckRemoteDebuggerPresent and GetProcessId functions /// to obtain this information. /// /// /// /// ProcessDebugPort
7 /// /// Retrieves a DWORD_PTR value that is the port number of the debugger for the process. A nonzero value indicates that the process /// is being run under the control of a ring 3 debugger. Use the CheckRemoteDebuggerPresent or IsDebuggerPresent function. /// /// /// /// ProcessWow64Information
26 /// /// Determines whether the process is running in the WOW64 environment (WOW64 is the x86 emulator that allows Win32-based /// applications to run on 64-bit Windows). Use the IsWow64Process2 function to obtain this information. /// /// /// /// ProcessImageFileName
27 /// /// Retrieves a UNICODE_STRING value containing the name of the image file for the process. Use the QueryFullProcessImageName or /// GetProcessImageFileName function to obtain this information. /// /// /// /// ProcessBreakOnTermination
29 /// Retrieves a ULONG value indicating whether the process is considered critical. /// /// /// ProcessSubsystemInformation
75 /// /// Retrieves a SUBSYSTEM_INFORMATION_TYPE value indicating the subsystem type of the process. The buffer pointed to by the /// ProcessInformation parameter should be large enough to hold a single SUBSYSTEM_INFORMATION_TYPE enumeration. /// /// /// /// /// The structure and associated memory for any allocated sub-types. /// Mismatch between requested type and class. public static NtQueryResult NtQueryInformationProcess([In] HPROCESS ProcessHandle, PROCESSINFOCLASS ProcessInformationClass) where T : struct { if (!CorrespondingTypeAttribute.CanGet(ProcessInformationClass, typeof(T))) throw new ArgumentException("Mismatch between requested type and class."); var mem = new NtQueryResult(); var status = NtQueryInformationProcess(ProcessHandle, ProcessInformationClass, mem, mem.Size, out var sz); if (status.Succeeded) return mem; if (status != NTStatus.STATUS_INFO_LENGTH_MISMATCH || sz == 0) throw status.GetException(); mem.Size = sz; NtQueryInformationProcess(ProcessHandle, ProcessInformationClass, mem, mem.Size, out _).ThrowIfFailed(); return mem; } /// /// [This structure may be altered in future versions of Windows.] /// Contains process information. /// /// The syntax for this structure on 64-bit Windows is as follows: // https://docs.microsoft.com/en-us/windows/win32/api/winternl/ns-winternl-peb typedef struct _PEB { BYTE Reserved1[2]; BYTE // BeingDebugged; BYTE Reserved2[1]; PVOID Reserved3[2]; PPEB_LDR_DATA Ldr; PRTL_USER_PROCESS_PARAMETERS ProcessParameters; PVOID // Reserved4[3]; PVOID AtlThunkSListPtr; PVOID Reserved5; ULONG Reserved6; PVOID Reserved7; ULONG Reserved8; ULONG // AtlThunkSListPtr32; PVOID Reserved9[45]; BYTE Reserved10[96]; PPS_POST_PROCESS_INIT_ROUTINE PostProcessInitRoutine; BYTE // Reserved11[128]; PVOID Reserved12[1]; ULONG SessionId; } PEB, *PPEB; [PInvokeData("winternl.h", MSDNShortId = "836a6b82-d3e8-4de6-808d-5476dfb51356")] [StructLayout(LayoutKind.Sequential)] public struct PEB { /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)] private readonly byte[] Reserved_1; /// Indicates whether the specified process is currently being debugged. public byte BeingDebugged; /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)] private readonly byte[] Reserved2; /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)] private readonly IntPtr[] Reserved3; /// A pointer to a PEB_LDR_DATA structure that contains information about the loaded modules for the process. public IntPtr Ldr; /// /// A pointer to an RTL_USER_PROCESS_PARAMETERS structure that contains process parameter information such as the command line. /// public IntPtr ProcessParameters; /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)] private readonly IntPtr[] Reserved4; private readonly IntPtr AtlThunkSListPtr; /// Reserved for internal use by the operating system. private readonly IntPtr Reserved5; /// Reserved for internal use by the operating system. private readonly uint Reserved6; /// Reserved for internal use by the operating system. private readonly IntPtr Reserved7; /// Reserved for internal use by the operating system. private readonly uint Reserved8; /// private readonly uint AtlThunkSListPtr32; /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 45)] private readonly IntPtr[] Reserved9; /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 96)] private readonly byte[] Reserved10; /// private readonly IntPtr PostProcessInitRoutine; /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] private readonly byte[] Reserved11; /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)] private readonly IntPtr[] Reserved12; /// The Terminal Services session identifier associated with the current process. public uint SessionId; } /// Contains information for basic process information. /// https://msdn.microsoft.com/en-us/library/windows/desktop/ms684280(v=vs.85).aspx [StructLayout(LayoutKind.Sequential)] public struct PROCESS_BASIC_INFORMATION { /// Reserved for internal use by the operating system. private readonly IntPtr Reserved1; /// Pointer to a PEB structure. public IntPtr PebBaseAddress; /// Reserved for internal use by the operating system. private readonly IntPtr Reserved2_1; /// Reserved for internal use by the operating system. private readonly IntPtr Reserved2_2; /// System's unique identifier for this process. public IntPtr UniqueProcessId; /// Reserved for internal use by the operating system. private readonly IntPtr Reserved3; } /// /// [This structure may be altered in future versions of Windows.] /// Contains process parameter information. /// // https://docs.microsoft.com/en-us/windows/win32/api/winternl/ns-winternl-rtl_user_process_parameters typedef struct // _RTL_USER_PROCESS_PARAMETERS { BYTE Reserved1[16]; PVOID Reserved2[10]; UNICODE_STRING ImagePathName; UNICODE_STRING CommandLine; // } RTL_USER_PROCESS_PARAMETERS, *PRTL_USER_PROCESS_PARAMETERS; [PInvokeData("winternl.h", MSDNShortId = "e736aefa-9945-4526-84d8-adb6e82b9991")] [StructLayout(LayoutKind.Sequential)] public struct RTL_USER_PROCESS_PARAMETERS { /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] private readonly byte[] Reserved1; /// Reserved for internal use by the operating system. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)] private readonly IntPtr[] Reserved2; /// The path of the image file for the process. public UNICODE_STRING ImagePathName; /// The command-line string passed to the process. public UNICODE_STRING CommandLine; } /// /// Represents the structure and associated memory returned by NtQueryXX functions. The memory associate with this structure /// will be disposed when this variable goes out of scope or is disposed. /// /// The type of the retrieved structure. public class NtQueryResult : SafeMemStruct where T : struct { internal NtQueryResult(uint sz = 0) : base(sz) { } } } }