1 files changed, 67 insertions, 0 deletions
diff --git a/dev/kernel/KernelKit/KPC.h b/dev/kernel/KernelKit/KPC.h
new file mode 100644
index 00000000..9b62c14e
--- /dev/null
+++ b/dev/kernel/KernelKit/KPC.h
@@ -0,0 +1,67 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <NewKit/Defines.h>
+
+/// @file KPC.h
+/// @brief Kernel Procedure Code.
+
+#define err_local_ok()	 (NeOS::UserProcessScheduler::The().CurrentProcess().Leak().GetLocalCode() == NeOS::kErrorSuccess)
+#define err_local_fail() (NeOS::UserProcessScheduler::The().CurrentProcess().Leak().GetLocalCode() != NeOS::kErrorSuccess)
+#define err_local_get()	 (NeOS::UserProcessScheduler::The().CurrentProcess().Leak().GetLocalCode())
+
+#define err_global_ok()	  (NeOS::kErrorLocalNumber == NeOS::kErrorSuccess)
+#define err_global_fail() (NeOS::kErrorLocalNumber != NeOS::kErrorSuccess)
+#define err_global_get()  (NeOS::kErrorLocalNumber)
+
+namespace NeOS
+{
+	typedef Int32 HError;
+
+	inline HError kErrorLocalNumber = 0UL;
+
+	inline constexpr HError kErrorSuccess			 = 0;
+	inline constexpr HError kErrorExecutable		 = 33;
+	inline constexpr HError kErrorExecutableLib		 = 34;
+	inline constexpr HError kErrorFileNotFound		 = 35;
+	inline constexpr HError kErrorDirectoryNotFound	 = 36;
+	inline constexpr HError kErrorDiskReadOnly		 = 37;
+	inline constexpr HError kErrorDiskIsFull		 = 38;
+	inline constexpr HError kErrorProcessFault		 = 39;
+	inline constexpr HError kErrorSocketHangUp		 = 40;
+	inline constexpr HError kErrorThreadLocalStorage = 41;
+	inline constexpr HError kErrorMath				 = 42;
+	inline constexpr HError kErrorNoNetwork			 = 43;
+	inline constexpr HError kErrorHeapOutOfMemory	 = 44;
+	inline constexpr HError kErrorNoSuchDisk		 = 45;
+	inline constexpr HError kErrorFileExists		 = 46;
+	inline constexpr HError kErrorFormatFailed		 = 47;
+	inline constexpr HError kErrorNetworkTimeout	 = 48;
+	inline constexpr HError kErrorInternal			 = 49;
+	inline constexpr HError kErrorForkAlreadyExists	 = 50;
+	inline constexpr HError kErrorOutOfTeamSlot		 = 51;
+	inline constexpr HError kErrorHeapNotPresent	 = 52;
+	inline constexpr HError kErrorNoEntrypoint		 = 53;
+	inline constexpr HError kErrorDiskIsCorrupted	 = 54;
+	inline constexpr HError kErrorDisk				 = 55;
+	inline constexpr HError kErrorInvalidData		 = 56;
+	inline constexpr HError kErrorAsync				 = 57;
+	inline constexpr HError kErrorNonBlocking		 = 58;
+	inline constexpr HError kErrorIPC				 = 59;
+	inline constexpr HError kErrorSign				 = 60;
+	inline constexpr HError kErrorInvalidCreds		 = 61;
+	inline constexpr HError kErrorCDTrayBroken		 = 62;
+	inline constexpr HError kErrorUnrecoverableDisk	 = 63;
+	inline constexpr HError kErrorFileLocked		 = 64;
+	inline constexpr HError kErrorUnimplemented		 = -1;
+
+	/// @brief Does a system wide bug check.
+	/// @param void no params are needed.
+	/// @return if error-free: false, otherwise true.
+	Boolean err_bug_check_raise(Void) noexcept;
+} // namespace NeOS