289 lines
5.1 KiB
C
289 lines
5.1 KiB
C
/*++
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Copyright (c) 2024-2025, Quinn Stephens.
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Provided under the BSD 3-Clause license.
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Module Name:
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ntdef.h
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Abstract:
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Provides basic NT definitions.
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--*/
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#pragma once
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#ifndef _NTDEF_H
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#define _NTDEF_H
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#include <string.h>
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#ifndef IN
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#define IN
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#endif
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#ifndef OUT
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#define OUT
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#endif
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#ifndef OPTIONAL
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#define OPTIONAL
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#endif
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#ifndef VOID
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#define VOID void
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#endif
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#ifndef CONST
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#define CONST const
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#endif
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#ifndef ANYSIZE_ARRAY
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#define ANYSIZE_ARRAY 1
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#endif
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#ifndef NULL
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#if defined(__cplusplus)
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#if __cplusplus >= 201103L
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#define NULL nullptr
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#else
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#define NULL 0
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#endif
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#else
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#define NULL ((VOID *) 0)
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#endif
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#endif
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#ifndef FORCEINLINE
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#if defined(_MSC_EXTENSIONS)
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#define FORCEINLINE __forceinline
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#elif defined(__clang__) || defined(__GNUC__)
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#define FORCEINLINE __attribute__((always_inline))
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#else
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#warning Unable to define FORCEINLINE
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#define FORCEINLINE static inline
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#endif
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#endif
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#ifndef FASTCALL
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#if defined(_M_IX86)
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#define FASTCALL __fastcall
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#elif defined(__clang__) || defined(__GNUC__)
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#define FASTCALL __attribute__((fastcall))
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#else
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#warning Unable to defined FASTCALL
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#define FASTCALL
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#endif
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#endif
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#ifndef NTAPI
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#if !defined(_M_AMD64)
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#if defined(_MSC_EXTENSIONS)
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#define NTAPI __stdcall
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#elif defined(__clang__) || defined(__GNUC__)
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#define NTAPI __attribute__((stdcall))
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#else
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#warning Unable to define NTAPI
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#define NTAPI
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#endif
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#else
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#define NTAPI
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#endif
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#endif
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//
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// Basic types.
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//
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typedef char CHAR;
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typedef short SHORT;
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typedef long LONG;
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typedef unsigned char UCHAR;
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typedef unsigned short USHORT;
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typedef unsigned long ULONG;
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//
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// Minimum/maximum values of basic types.
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//
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#define MINCHAR 0x80
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#define MAXCHAR 0x7F
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#define MINSHORT 0x8000
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#define MAXSHORT 0x7FFF
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#define MINLONG 0x80000000
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#define MAXLONG 0x7FFFFFFF
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#define MAXUCHAR 0xFF
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#define MAXUSHORT 0xFFFF
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#define MAXULONG 0xFFFFFFFF
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//
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// Long long types.
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//
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#if defined(_MSC_EXTENSIONS)
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typedef __int64 LONGLONG;
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typedef unsigned __int64 ULONGLONG;
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#elif defined(UNIX_LP64)
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typedef long LONGLONG;
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typedef unsigned long ULONGLONG;
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#else
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typedef long long LONGLONG;
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typedef unsigned long long ULONGLONG;
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#endif
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#define MAXLONGLONG 0x7FFFFFFFFFFFFFFF
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#define MAXULONGLONG 0xFFFFFFFFFFFFFFFF
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//
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// Logical/boolean value types.
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//
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typedef ULONG LOGICAL;
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typedef int BOOL;
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typedef UCHAR BOOLEAN;
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#define TRUE 1
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#define FALSE 0
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//
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// Numeric pointer types.
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//
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#if defined(_WIN64)
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typedef LONGLONG LONG_PTR;
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typedef ULONGLONG ULONG_PTR;
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#else
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typedef LONG LONG_PTR;
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typedef ULONG ULONG_PTR;
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#endif
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//
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// Basic type pointers.
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//
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typedef VOID *PVOID;
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typedef CHAR *PCHAR;
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typedef SHORT *PSHORT;
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typedef UCHAR *PUCHAR;
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typedef USHORT *PUSHORT;
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typedef ULONG *PULONG;
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//
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// Long long type pointers.
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//
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typedef LONGLONG *PLONGLONG;
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typedef ULONGLONG *PULONGLONG;
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//
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// Logical/boolean type pointers.
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//
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typedef ULONG *PLOGICAL;
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typedef BOOL *PBOOL;
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typedef BOOLEAN *PBOOLEAN;
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//
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// String types.
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//
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typedef CHAR *PSTR, *LPSTR;
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typedef CONST CHAR *PCSTR, *LPCSTR;
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//
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// Wide character/string types.
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//
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typedef USHORT WCHAR;
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typedef WCHAR *PWCHAR, *PWSTR, *LPWSTR;
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typedef CONST WCHAR *PCWSTR, *LPCWSTR;
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//
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// Handle types.
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//
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typedef PVOID HANDLE;
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typedef HANDLE *PHANDLE;
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#define INVALID_HANDLE_VALUE ((HANDLE)(LONG_PTR) -1)
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//
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// Status code types.
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//
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typedef LONG NTSTATUS;
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typedef NTSTATUS *PNTSTATUS;
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//
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// Status code utilities.
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//
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#define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0)
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#define NT_INFORMATION(Status) ((ULONG)(Status) >> 30 == 1)
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#define NT_WARNING(Status) ((ULONG)(Status) >> 30 == 2)
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#define NT_ERROR(Status) ((ULONG)(Status) >> 30 == 3)
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//
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// Struct field offset helper.
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//
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#if defined(__clang__) || defined(__GNUC__)
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#define FIELD_OFFSET(type, field) ((ULONG)__builtin_offsetof(type, field))
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#else
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#define FIELD_OFFSET(type, field) ((ULONG)&(((type *)0)->field))
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#endif
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//
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// Alignment helpers.
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//
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#define ALIGN_DOWN(x, a) ((x) & ~((a) - 1))
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#define ALIGN_UP(x, a) ALIGN_DOWN((x) + (a) - 1, a)
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//
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// Bit extraction helpers.
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//
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#define LODWORD(x) ((ULONG)(x))
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#define HIDWORD(x) ((ULONG)((x) >> 32))
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#define LOWORD(x) ((USHORT)(x))
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#define HIWORD(x) ((USHORT)((x) >> 16))
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#define LOBYTE(x) ((UCHAR)(x))
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#define HIBYTE(x) ((UCHAR)((x) >> 8))
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//
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// Large (64-bit) integer value.
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//
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typedef union LARGE_INTEGER {
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struct {
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ULONG LowPart;
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LONG HighPart;
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};
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LONGLONG QuadPart;
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} LARGE_INTEGER, *PLARGE_INTEGER;
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//
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// Large (64-bit) unsigned integer value.
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//
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typedef union ULARGE_INTEGER {
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struct {
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ULONG LowPart;
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ULONG HighPart;
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};
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ULONGLONG QuadPart;
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} ULARGE_INTEGER, *PULARGE_INTEGER;
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//
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// Unicode string.
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//
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typedef struct _UNICODE_STRING {
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USHORT Length;
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USHORT MaximumLength;
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PWSTR Buffer;
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} UNICODE_STRING, *PUNICODE_STRING;
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typedef CONST UNICODE_STRING *PCUNICODE_STRING;
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#define UNICODE_NULL ((WCHAR) 0)
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#define MAX_USTRING ALIGN_DOWN(MAXUSHORT, sizeof(WCHAR))
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//
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// Doubly-linked list entry.
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//
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typedef struct _LIST_ENTRY {
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struct _LIST_ENTRY *Flink;
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struct _LIST_ENTRY *Blink;
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} LIST_ENTRY, *PLIST_ENTRY;
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#include <guiddef.h>
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#endif /* !_NTDEF_H */
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