BootZ: Introduce NetBoot module & consolidate STANDALONE macro

- Renamed __BOOTLDR_STANDALONE__ → __BOOTZ_STANDALONE__ across all modules.
- Introduced NetBoot module to support fallback booting via packets.
- Updated amd64-desktop build to bundle netboot.sys as part of system image.
- NetBoot now properly zeroes out its header and performs sanity check on PatchLength.
- Boot flow now attempts to fallback to NetBoot if neoskrnl.exe fails to start.
- Reorganized disk formatting logic for clarity and better failure recovery.
- HeFS & NeFS minimum disk size lowered (64GiB → 256MiB and 4GiB → 8MiB).
- Renamed `IndexProperty` to `Index` in FSKit::Indexer.
- Moved HintKit → hint/, updated includes and guards.
- Removed deprecated LPC.{cc,h}, replaced by ProcessCodes.h.
- Modernized SystemCalls.h typedefs: SCIObject → Ref, ThreadObject → ThreadRef, etc.
- Updated userland tools `make_app` and `open` with copyright and behavior fixes.

This prepares the BootZ infrastructure for headless/network environments.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

27 files changed, 176 insertions, 171 deletions

diff --git a/dev/boot/amd64-desktop.make b/dev/boot/amd64-desktop.make
index 5a827643..9e47788c 100644
--- a/dev/boot/amd64-desktop.make
+++ b/dev/boot/amd64-desktop.make
@@ -60,7 +60,7 @@ endif
 
 LD_FLAGS=-e Main --subsystem=10
 
-STANDALONE_MACRO=-D__BOOTLDR_STANDALONE__
+STANDALONE_MACRO=-D__BOOTZ_STANDALONE__
 OBJ=*.o
 
 REM=rm
@@ -74,7 +74,7 @@ FLAG_GNU=-fshort-wchar -D__EFI_x86_64__ -mno-red-zone -D__NEOSKRNL__ -D__BOOTZ__
 BOOTLOADER=bootz.exe
 KERNEL=neoskrnl.exe
 SYSCHK=syschk.sys
-STARTUP=startup.sys
+NETBOOT=netboot.sys
 SCIKIT=libuser.dylib
 
 .PHONY: invalid-recipe
@@ -90,13 +90,14 @@ all: compile-amd64
 	$(COPY) src/$(BOOTLOADER) src/Root/EFI/BOOT/BOOTZ.EFI
 	$(COPY) ../kernel/$(KERNEL) src/Root/$(KERNEL)
 	$(COPY) ./modules/SysChk/$(SYSCHK) src/Root/$(SYSCHK)
+	$(COPY) ./modules/NetBoot/$(NETBOOT) src/Root/$(NETBOOT)
 	$(COPY) ../user/$(SCIKIT) src/Root/$(SCIKIT)
 	$(COPY) src/$(BOOTLOADER) src/Root/$(BOOTLOADER)
 
 .PHONY: disk
 disk:
 	dd if=/dev/zero of=$(BOOT) bs=30M count=100
-	mformat -i $(BOOT) -F -v "NEOS_ESP"
+	mformat -i $(BOOT) -F -v "NeKernel"
 
 
 ifneq ($(DEBUG_SUPPORT), )
diff --git a/dev/boot/arm64-desktop.make b/dev/boot/arm64-desktop.make
index 5b38d46c..72708c3f 100644
--- a/dev/boot/arm64-desktop.make
+++ b/dev/boot/arm64-desktop.make
@@ -36,7 +36,7 @@ EMU_FLAGS=-net none -smp 4 -m 8G -cpu max -M virt \
 
 LD_FLAGS=-subsystem:efi_application -entry:Main /nodefaultlib
 
-STANDALONE_MACRO=-D__BOOTLDR_STANDALONE__
+STANDALONE_MACRO=-D__BOOTZ_STANDALONE__
 OBJ=*.o
 
 REM=rm
@@ -45,7 +45,7 @@ REM_FLAG=-f
 FLAG_ASM=-f win64
 FLAG_GNU=-fshort-wchar -c -ffreestanding -MMD -mno-red-zone -D__NE_ARM64__ -fno-rtti -fno-exceptions -I./ \
 			 -target aarch64-unknown-windows \
-				-std=c++20 -DBOOTZ_EPM_SUPPORT -DZBA_USE_FB -D__FSKIT_USE_NEFS__ -D__BOOTLDR_STANDALONE__ -D__NEOSKRNL__ -D__BOOTZ__ -D__HAVE_NE_APIS__ -D__NE__ -I../ -I../kernel
+				-std=c++20 -DBOOTZ_EPM_SUPPORT -DZBA_USE_FB -D__FSKIT_USE_NEFS__ -D__BOOTZ_STANDALONE__ -D__NEOSKRNL__ -D__BOOTZ__ -D__HAVE_NE_APIS__ -D__NE__ -I../ -I../kernel
 
 BOOT_LOADER=bootz.exe
 KERNEL=neoskrnl.exe
diff --git a/dev/boot/arm64-mobile.make b/dev/boot/arm64-mobile.make
index 485bfed0..274a29cb 100644
--- a/dev/boot/arm64-mobile.make
+++ b/dev/boot/arm64-mobile.make
@@ -37,7 +37,7 @@ EMU_FLAGS=-net none -smp 4 -m 8G -cpu max -M virt-9.1 \
 
 LD_FLAGS=-subsystem:efi_application -entry:Main /nodefaultlib
 
-STANDALONE_MACRO=-D__BOOTLDR_STANDALONE__
+STANDALONE_MACRO=-D__BOOTZ_STANDALONE__
 OBJ=*.o
 
 REM=rm
@@ -46,7 +46,7 @@ REM_FLAG=-f
 FLAG_ASM=-f win64
 FLAG_GNU=-fshort-wchar -c -ffreestanding -MMD -mno-red-zone -D__NE_ARM64__ -fno-rtti -fno-exceptions -I./ \
 			 -target aarch64-unknown-windows \
-				-std=c++20 -DBOOTZ_EPM_SUPPORT -DkExpectedWidth=320 -DkExpectedHeight=480 -D__FSKIT_USE_NEFS__ -D__BOOTLDR_STANDALONE__ -D__NEOSKRNL__ -D__BOOTZ__ -D__HAVE_NE_APIS__ -D__NE__ -I../ -I../kernel
+				-std=c++20 -DBOOTZ_EPM_SUPPORT -DkExpectedWidth=320 -DkExpectedHeight=480 -D__FSKIT_USE_NEFS__ -D__BOOTZ_STANDALONE__ -D__NEOSKRNL__ -D__BOOTZ__ -D__HAVE_NE_APIS__ -D__NE__ -I../ -I../kernel
 
 BOOT_LOADER=bootz.exe
 KERNEL=neoskrnl.exe
diff --git a/dev/boot/modules/NetBoot/Boot.S b/dev/boot/modules/NetBoot/Boot.S
index 2095b91d..8ebfb352 100644
--- a/dev/boot/modules/NetBoot/Boot.S
+++ b/dev/boot/modules/NetBoot/Boot.S
@@ -7,8 +7,10 @@
 ;; * 	========================================================
 ;; */
 
+#ifdef __NE_AMD64__
 .code64
 .intel_syntax noprefix
+#endif
 
 #define kTypeDriver 101
 #define kArchAmd64 122
@@ -18,11 +20,3 @@
 
 .quad kHandoverMagic
 .word kTypeDriver
-
-.text
-
-.extern main
-.global __main
-
-__main:
-    ret
diff --git a/dev/boot/modules/NetBoot/NetBoot.cc b/dev/boot/modules/NetBoot/NetBoot.cc
index 1787045e..4a169d33 100644
--- a/dev/boot/modules/NetBoot/NetBoot.cc
+++ b/dev/boot/modules/NetBoot/NetBoot.cc
@@ -15,12 +15,14 @@ EXTERN_C Int32 ModuleMain(NeOS::HEL::BootInfoHeader* handover)
 {
 	NETBOOT_INTERNET_HEADER inet{};
 
+	memset(&inet, 0, sizeof(NETBOOT_INTERNET_HEADER));
+
 	/// TODO: Read packet from JSON file 'netboot.json'
 
-	if (inet.PatchLength < 0)
+	if (inet.PatchLength < 1)
 	{
 		Boot::BootTextWriter writer;
-		writer.Write("NetBootLauncher: No Patch attached to packet.\r");
+		writer.Write("NetBootLauncher: No executable attached to the packet, aborting.\r");
 
 		return kEfiFail;
 	}
@@ -31,6 +33,8 @@ EXTERN_C Int32 ModuleMain(NeOS::HEL::BootInfoHeader* handover)
 
 		if (thread.IsValid())
 			return thread.Start(handover, YES);
+
+		return kEfiFail;
 	}
 	else
 	{
diff --git a/dev/boot/modules/NetBoot/amd64.json b/dev/boot/modules/NetBoot/amd64.json
index db035094..db39cced 100644
--- a/dev/boot/modules/NetBoot/amd64.json
+++ b/dev/boot/modules/NetBoot/amd64.json
@@ -10,12 +10,12 @@
     "-fPIC",
     "-fno-rtti",
     "-fno-exceptions",
-    "-Wl,--subsystem=17,--image-base,0x10000000,-e,ModuleMain"
+    "-Wl,--subsystem=17,--image-base,0x1000000,-e,ModuleMain"
   ],
   "cpp_macros": [
     "__NEOSKRNL__",
     "__BOOTZ__",
-    "__BOOTLDR_STANDALONE__",
+    "__BOOTZ_STANDALONE__",
     "__NE_AMD64__",
     "kNetBootVersionHighest=0x0100",
     "kNetBootVersionLowest=0x0100",
diff --git a/dev/boot/modules/SysChk/amd64.json b/dev/boot/modules/SysChk/amd64.json
index 97b6c418..7f013b39 100644
--- a/dev/boot/modules/SysChk/amd64.json
+++ b/dev/boot/modules/SysChk/amd64.json
@@ -10,12 +10,12 @@
     "-fPIC",
     "-fno-rtti",
     "-fno-exceptions",
-    "-Wl,--subsystem=17,--image-base,0x10000000,-e,ModuleMain"
+    "-Wl,--subsystem=17,--image-base,0x1000000,-e,ModuleMain"
   ],
   "cpp_macros": [
     "__NEOSKRNL__",
     "__BOOTZ__",
-    "__BOOTLDR_STANDALONE__",
+    "__BOOTZ_STANDALONE__",
     "__NE_AMD64__",
     "kChkVersionHighest=0x0100",
     "kChkVersionLowest=0x0100",
diff --git a/dev/boot/modules/SysChk/arm64.json b/dev/boot/modules/SysChk/arm64.json
index 6d9161ea..502c75cd 100644
--- a/dev/boot/modules/SysChk/arm64.json
+++ b/dev/boot/modules/SysChk/arm64.json
@@ -17,7 +17,7 @@
   "cpp_macros": [
     "__NEOSKRNL__",
     "__BOOTZ__",
-    "__BOOTLDR_STANDALONE__",
+    "__BOOTZ_STANDALONE__",
     "__NE_ARM64__",
     "kChkVersionHighest=0x0100",
     "kChkVersionLowest=0x0100",
diff --git a/dev/boot/src/BootSupport.cc b/dev/boot/src/BootSupport.cc
index 4d808ddc..efe6602a 100644
--- a/dev/boot/src/BootSupport.cc
+++ b/dev/boot/src/BootSupport.cc
@@ -12,7 +12,7 @@
 #include <KernelKit/MSDOS.h>
 #include <KernelKit/PE.h>
 
-#ifdef __BOOTLDR_STANDALONE__
+#ifdef __BOOTZ_STANDALONE__
 
 /// @brief memset definition in C++.
 /// @param dst destination pointer.
diff --git a/dev/boot/src/HEL/AMD64/BootEFI.cc b/dev/boot/src/HEL/AMD64/BootEFI.cc
index 0840bc31..4744892f 100644
--- a/dev/boot/src/HEL/AMD64/BootEFI.cc
+++ b/dev/boot/src/HEL/AMD64/BootEFI.cc
@@ -202,47 +202,46 @@ EFI_EXTERN_C EFI_API Int32 Main(EfiHandlePtr	image_handle,
 	handover_hdr->f_FirmwareCustomTables[0] = (VoidPtr)BS;
 	handover_hdr->f_FirmwareCustomTables[1] = (VoidPtr)ST;
 
+	// ------------------------------------------ //
+	// If we succeed in reading the blob, then execute it.
+	// ------------------------------------------ //
+
+#if defined(__ATA_PIO__)
 	Boot::BootFileReader reader_syschk(L"syschk.sys", image_handle);
 	reader_syschk.ReadAll(0);
 
 	Boot::BootThread* syschk_thread = nullptr;
 
-	// ------------------------------------------ //
-	// If we succeed in reading the blob, then execute it.
-	// ------------------------------------------ //
-
 	if (reader_syschk.Blob())
 	{
 		syschk_thread = new Boot::BootThread(reader_syschk.Blob());
-		syschk_thread->SetName("BootZ: System Recovery Check");
-		syschk_thread->Start(handover_hdr, NO);
-	}
+		syschk_thread->SetName("BootZ: System Check");
 
-#if defined(__ATA_PIO__)
-	Boot::BDiskFormatFactory<BootDeviceATA> partition_factory;
+		Boot::BDiskFormatFactory<BootDeviceATA> partition_factory;
 
-	if (syschk_thread->Start(handover_hdr, NO) != kEfiOk)
-	{
-		if (partition_factory.IsPartitionValid() == NO)
+		if (syschk_thread->Start(handover_hdr, NO) != kEfiOk)
 		{
-			Boot::BDiskFormatFactory<BootDeviceATA>::BFileDescriptor root{};
+			if (partition_factory.IsPartitionValid() == NO)
+			{
+				Boot::BDiskFormatFactory<BootDeviceATA>::BFileDescriptor root{};
 
-			root.fFileName[0] = kNeFSRoot[0];
-			root.fFileName[1] = 0;
+				root.fFileName[0] = kNeFSRoot[0];
+				root.fFileName[1] = 0;
 
-			root.fKind = kNeFSCatalogKindDir;
+				root.fKind = kNeFSCatalogKindDir;
 
-			const auto kFSName = "SSD";
+				const auto kFSName = "SSD";
 
-			partition_factory.Format(kFSName, &root, 1);
+				partition_factory.Format(kFSName, &root, 1);
 
-			fb_init();
+				fb_init();
 
-			FB::fb_clear_video();
+				FB::fb_clear_video();
 
-			FBDrawBitMapInRegion(zka_has_disk, NE_HAS_DISK_WIDTH, NE_HAS_DISK_HEIGHT, (kHandoverHeader->f_GOP.f_Width - NE_HAS_DISK_WIDTH) / 2, (kHandoverHeader->f_GOP.f_Height - NE_HAS_DISK_HEIGHT) / 2);
+				FBDrawBitMapInRegion(zka_has_disk, NE_HAS_DISK_WIDTH, NE_HAS_DISK_HEIGHT, (kHandoverHeader->f_GOP.f_Width - NE_HAS_DISK_WIDTH) / 2, (kHandoverHeader->f_GOP.f_Height - NE_HAS_DISK_HEIGHT) / 2);
 
-			fb_clear();
+				fb_clear();
+			}
 		}
 	}
 #endif
@@ -265,7 +264,6 @@ EFI_EXTERN_C EFI_API Int32 Main(EfiHandlePtr	image_handle,
 				   handover_hdr->f_FirmwareVendorLen);
 
 	handover_hdr->f_FirmwareVendorLen = Boot::BStrLen(sys_table->FirmwareVendor);
-
 	// Assign to global 'kHandoverHeader'.
 
 	WideChar kernel_path[256U] = L"neoskrnl.exe";
@@ -318,7 +316,24 @@ EFI_EXTERN_C EFI_API Int32 Main(EfiHandlePtr	image_handle,
 	// Finally load the OS kernel.
 	// ---------------------------------------------------- //
 
-	kernel_thread->Start(handover_hdr, YES);
+	if (kernel_thread->Start(handover_hdr, YES) != kEfiOk)
+	{
+		Boot::BootFileReader reader_netboot(L"netboot.sys", image_handle);
+		reader_netboot.ReadAll(0);
+
+		Boot::BootThread* netboot_thread = nullptr;
 
+		// ------------------------------------------ //
+		// If we succeed in reading the blob, then execute it. (That is NetBoot)
+		// ------------------------------------------ //
+
+		if (reader_netboot.Blob())
+		{
+			netboot_thread = new Boot::BootThread(reader_netboot.Blob());
+			netboot_thread->SetName("BootZ: NetBoot");
+			netboot_thread->Start(handover_hdr, YES);
+		}
+	}
+	
 	CANT_REACH();
 }
diff --git a/dev/boot/src/HEL/AMD64/BootPlatform.cc b/dev/boot/src/HEL/AMD64/BootPlatform.cc
index c7ae4085..aab1c6b4 100644
--- a/dev/boot/src/HEL/AMD64/BootPlatform.cc
+++ b/dev/boot/src/HEL/AMD64/BootPlatform.cc
@@ -9,7 +9,7 @@
 #include <BootKit/Protocol.h>
 #include <BootKit/BootKit.h>
 
-#ifdef __BOOTLDR_STANDALONE__
+#ifdef __BOOTZ_STANDALONE__
 
 using namespace Boot;
 
@@ -103,4 +103,4 @@ void rt_hlt()
 	NeOS::HAL::rt_halt();
 }
 
-#endif // __BOOTLDR_STANDALONE__
+#endif // __BOOTZ_STANDALONE__
diff --git a/dev/boot/src/HEL/ARM64/BootPlatform.cc b/dev/boot/src/HEL/ARM64/BootPlatform.cc
index 9713b80d..ebb9f9b0 100644
--- a/dev/boot/src/HEL/ARM64/BootPlatform.cc
+++ b/dev/boot/src/HEL/ARM64/BootPlatform.cc
@@ -8,7 +8,7 @@
 #include <BootKit/Protocol.h>
 #include <BootKit/BootKit.h>
 
-#ifdef __BOOTLDR_STANDALONE__
+#ifdef __BOOTZ_STANDALONE__
 
 using namespace Boot;
 
@@ -34,4 +34,4 @@ EXTERN_C void rt_std()
 {
 }
 
-#endif // __BOOTLDR_STANDALONE__
+#endif // __BOOTZ_STANDALONE__
diff --git a/dev/boot/src/New+Delete.cc b/dev/boot/src/New+Delete.cc
index 03a1bb68..fa6bc146 100644
--- a/dev/boot/src/New+Delete.cc
+++ b/dev/boot/src/New+Delete.cc
@@ -8,7 +8,7 @@
 #include <BootKit/Protocol.h>
 #include <BootKit/BootKit.h>
 
-#ifdef __BOOTLDR_STANDALONE__
+#ifdef __BOOTZ_STANDALONE__
 EXTERN EfiBootServices* BS;
 
 /// @brief Allocates a new object.
@@ -57,4 +57,4 @@ void operator delete(void* buf, size_t size)
 	BS->FreePool(buf);
 }
 
-#endif // __BOOTLDR_STANDALONE__
+#endif // __BOOTZ_STANDALONE__
diff --git a/dev/HintKit/CompilerHint.h b/dev/hint/CompilerHint.h
index 9a1be9f6..f765b00c 100644
--- a/dev/HintKit/CompilerHint.h
+++ b/dev/hint/CompilerHint.h
@@ -4,8 +4,8 @@
 
 ------------------------------------------- */
 
-#ifndef HINTKIT_HINT_H
-#define HINTKIT_HINT_H
+#ifndef _NE_COMPILERHINT_H_
+#define _NE_COMPILERHINT_H_
 
 #ifdef __LIBCOMPILER__
 #pragma compiler(hint_manifest)
@@ -22,4 +22,4 @@
 #define _InOut
 #define _StrictInOut
 
-#endif // ifndef HINTKIT_HINT_H
+#endif // ifndef _NE_COMPILERHINT_H_
diff --git a/dev/kernel/FSKit/HeFS.h b/dev/kernel/FSKit/HeFS.h
index 6911ddef..5643c94e 100644
--- a/dev/kernel/FSKit/HeFS.h
+++ b/dev/kernel/FSKit/HeFS.h
@@ -18,7 +18,7 @@
 #define kHeFSFileNameLen (256U)

 #define kHeFSPartNameLen (256U)

 

-#define kHeFSMinimumDiskSize (gib_cast(64))

+#define kHeFSMinimumDiskSize (mib_cast(256))

 

 enum

 {

diff --git a/dev/kernel/FSKit/IndexableProperty.h b/dev/kernel/FSKit/IndexableProperty.h
index 6a79bc1b..054b2433 100644
--- a/dev/kernel/FSKit/IndexableProperty.h
+++ b/dev/kernel/FSKit/IndexableProperty.h
@@ -17,7 +17,7 @@ namespace NeOS
 {
 	namespace Indexer
 	{
-		struct IndexProperty final
+		struct Index final
 		{
 		public:
 			Char Drive[kDriveNameLen];
@@ -41,7 +41,7 @@ namespace NeOS
 			NE_COPY_DEFAULT(IndexableProperty);
 
 		public:
-			IndexProperty& Leak() noexcept;
+			Index& Leak() noexcept;
 
 		public:
 			void  AddFlag(Int16 flag);
@@ -49,8 +49,8 @@ namespace NeOS
 			Int16 HasFlag(Int16 flag);
 
 		private:
-			IndexProperty fIndex;
-			UInt32		  fFlags;
+			Index  fIndex;
+			UInt32 fFlags;
 		};
 
 		/// @brief Index a file into the indexer instance.
diff --git a/dev/kernel/FSKit/NeFS.h b/dev/kernel/FSKit/NeFS.h
index 8ff9d9d2..29a294db 100644
--- a/dev/kernel/FSKit/NeFS.h
+++ b/dev/kernel/FSKit/NeFS.h
@@ -17,7 +17,7 @@ default.
 #pragma once
 
 #include <CompilerKit/CompilerKit.h>
-#include <HintKit/CompilerHint.h>
+#include <hint/CompilerHint.h>
 #include <KernelKit/DriveMgr.h>
 #include <NewKit/Defines.h>
 #include <NewKit/KString.h>
@@ -31,7 +31,7 @@ default.
 #define kNeFSInvalidCatalog (-1)
 #define kNeFSCatalogNameLen (256)
 
-#define kNeFSMinimumDiskSize (gib_cast(4))
+#define kNeFSMinimumDiskSize (mib_cast(8))
 
 #define kNeFSSectorSz (512)
 
diff --git a/dev/kernel/KernelKit/FileMgr.h b/dev/kernel/KernelKit/FileMgr.h
index fec83d17..61bb6440 100644
--- a/dev/kernel/KernelKit/FileMgr.h
+++ b/dev/kernel/KernelKit/FileMgr.h
@@ -30,7 +30,7 @@
 #endif // __FSKIT_INCLUDES_HeFS__
 
 #include <CompilerKit/CompilerKit.h>
-#include <HintKit/CompilerHint.h>
+#include <hint/CompilerHint.h>
 #include <KernelKit/KPC.h>
 #include <KernelKit/DebugOutput.h>
 #include <NewKit/Stream.h>
diff --git a/dev/kernel/KernelKit/LoaderInterface.h b/dev/kernel/KernelKit/LoaderInterface.h
index 19c21ddb..99291c04 100644
--- a/dev/kernel/KernelKit/LoaderInterface.h
+++ b/dev/kernel/KernelKit/LoaderInterface.h
@@ -7,7 +7,7 @@
 #pragma once
 
 #include <CompilerKit/CompilerKit.h>
-#include <HintKit/CompilerHint.h>
+#include <hint/CompilerHint.h>
 #include <NewKit/Defines.h>
 #include <NewKit/ErrorOr.h>
 
diff --git a/dev/kernel/KernelKit/MemoryMgr.h b/dev/kernel/KernelKit/MemoryMgr.h
index 03bd4a2d..e2b8aa2f 100644
--- a/dev/kernel/KernelKit/MemoryMgr.h
+++ b/dev/kernel/KernelKit/MemoryMgr.h
@@ -13,7 +13,7 @@
 
 #include <NewKit/KernelPanic.h>
 #include <KernelKit/KPC.h>
-#include <HintKit/CompilerHint.h>
+#include <hint/CompilerHint.h>
 
 namespace NeOS
 {
diff --git a/dev/kernel/NetworkKit/IPC.h b/dev/kernel/NetworkKit/IPC.h
index 0d28c080..cbb9ddd4 100644
--- a/dev/kernel/NetworkKit/IPC.h
+++ b/dev/kernel/NetworkKit/IPC.h
@@ -12,7 +12,7 @@
 
 #include <NewKit/Defines.h>
 #include <NewKit/KString.h>
-#include <HintKit/CompilerHint.h>
+#include <hint/CompilerHint.h>
 
 /// @file IPC.h
 /// @brief IPC comm. protocol.
diff --git a/dev/kernel/src/IndexableProperty.cc b/dev/kernel/src/IndexableProperty.cc
index 404cddc3..8d3637f4 100644
--- a/dev/kernel/src/IndexableProperty.cc
+++ b/dev/kernel/src/IndexableProperty.cc
@@ -18,7 +18,7 @@ namespace NeOS
 {
 	namespace Indexer
 	{
-		IndexProperty& IndexableProperty::Leak() noexcept
+		Index& IndexableProperty::Leak() noexcept
 		{
 			return fIndex;
 		}
diff --git a/dev/user/LPC.h b/dev/user/LPC.h
deleted file mode 100644
index 87e5e500..00000000
--- a/dev/user/LPC.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/* -------------------------------------------
-
-	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
-
-------------------------------------------- */
-
-#pragma once
-
-#include <user/Macros.h>
-
-/// @file LPC.h
-/// @brief Local Procedure Code type and values.
-
-#define err_local_ok()	 (kLastError == kErrorSuccess)
-#define err_local_fail() (kLastError != kErrorSuccess)
-#define err_local_get()	 (kLastError)
-
-typedef SInt32 ErrObject;
-
-inline constexpr ErrObject kErrorSuccess			= 0;
-inline constexpr ErrObject kErrorExecutable			= 33;
-inline constexpr ErrObject kErrorExecutableLib		= 34;
-inline constexpr ErrObject kErrorFileNotFound		= 35;
-inline constexpr ErrObject kErrorDirectoryNotFound	= 36;
-inline constexpr ErrObject kErrorDiskReadOnly		= 37;
-inline constexpr ErrObject kErrorDiskIsFull			= 38;
-inline constexpr ErrObject kErrorProcessFault		= 39;
-inline constexpr ErrObject kErrorSocketHangUp		= 40;
-inline constexpr ErrObject kErrorThreadLocalStorage = 41;
-inline constexpr ErrObject kErrorMath				= 42;
-inline constexpr ErrObject kErrorNoNetwork			= 43;
-inline constexpr ErrObject kErrorHeapOutOfMemory	= 44;
-inline constexpr ErrObject kErrorNoSuchDisk			= 45;
-inline constexpr ErrObject kErrorFileExists			= 46;
-inline constexpr ErrObject kErrorFormatFailed		= 47;
-inline constexpr ErrObject kErrorNetworkTimeout		= 48;
-inline constexpr ErrObject kErrorInternal			= 49;
-inline constexpr ErrObject kErrorForkAlreadyExists	= 50;
-inline constexpr ErrObject kErrorOutOfTeamSlot		= 51;
-inline constexpr ErrObject kErrorHeapNotPresent		= 52;
-inline constexpr ErrObject kErrorNoEntrypoint		= 53;
-inline constexpr ErrObject kErrorDiskIsCorrupted	= 54;
-inline constexpr ErrObject kErrorDisk				= 55;
-inline constexpr ErrObject kErrorInvalidData		= 56;
-inline constexpr ErrObject kErrorAsync				= 57;
-inline constexpr ErrObject kErrorNonBlocking		= 58;
-inline constexpr ErrObject kErrorIPC				= 59;
-inline constexpr ErrObject kErrorSign				= 60;
-inline constexpr ErrObject kErrorInvalidCreds		= 61;
-inline constexpr ErrObject kErrorCDTrayBroken		= 62;
-inline constexpr ErrObject kErrorUnrecoverableDisk	= 63;
-inline constexpr ErrObject kErrorFileLocked			= 64;
-inline constexpr ErrObject kErrorUnimplemented		= -1;
-
-/// @brief The last error reported by the system to the process.
-IMPORT_C ErrObject kLastError;
diff --git a/dev/user/Macros.h b/dev/user/Macros.h
index e2759258..c8ac2c97 100644
--- a/dev/user/Macros.h
+++ b/dev/user/Macros.h
@@ -14,7 +14,7 @@ Purpose: libsci Macros header.
 /// @brief Macros and Core types of the SCI (System Call Interface).
 /***********************************************************************************/
 
-#include <HintKit/CompilerHint.h>
+#include <hint/CompilerHint.h>
 
 #define ATTRIBUTE(X) __attribute__((X))
 
diff --git a/dev/user/ProcessCodes.h b/dev/user/ProcessCodes.h
new file mode 100644
index 00000000..2b740784
--- /dev/null
+++ b/dev/user/ProcessCodes.h
@@ -0,0 +1,56 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <user/Macros.h>
+
+/// @file ProcessCodes.h
+/// @brief Process Codes type and values.
+
+#define err_local_ok()	 (kLastError == kErrorSuccess)
+#define err_local_fail() (kLastError != kErrorSuccess)
+#define err_local_get()	 (kLastError)
+
+typedef SInt32 ErrKind;
+
+inline constexpr ErrKind kErrorSuccess			  = 0;
+inline constexpr ErrKind kErrorExecutable		  = 33;
+inline constexpr ErrKind kErrorExecutableLib	  = 34;
+inline constexpr ErrKind kErrorFileNotFound		  = 35;
+inline constexpr ErrKind kErrorDirectoryNotFound  = 36;
+inline constexpr ErrKind kErrorDiskReadOnly		  = 37;
+inline constexpr ErrKind kErrorDiskIsFull		  = 38;
+inline constexpr ErrKind kErrorProcessFault		  = 39;
+inline constexpr ErrKind kErrorSocketHangUp		  = 40;
+inline constexpr ErrKind kErrorThreadLocalStorage = 41;
+inline constexpr ErrKind kErrorMath				  = 42;
+inline constexpr ErrKind kErrorNoNetwork		  = 43;
+inline constexpr ErrKind kErrorHeapOutOfMemory	  = 44;
+inline constexpr ErrKind kErrorNoSuchDisk		  = 45;
+inline constexpr ErrKind kErrorFileExists		  = 46;
+inline constexpr ErrKind kErrorFormatFailed		  = 47;
+inline constexpr ErrKind kErrorNetworkTimeout	  = 48;
+inline constexpr ErrKind kErrorInternal			  = 49;
+inline constexpr ErrKind kErrorForkAlreadyExists  = 50;
+inline constexpr ErrKind kErrorOutOfTeamSlot	  = 51;
+inline constexpr ErrKind kErrorHeapNotPresent	  = 52;
+inline constexpr ErrKind kErrorNoEntrypoint		  = 53;
+inline constexpr ErrKind kErrorDiskIsCorrupted	  = 54;
+inline constexpr ErrKind kErrorDisk				  = 55;
+inline constexpr ErrKind kErrorInvalidData		  = 56;
+inline constexpr ErrKind kErrorAsync			  = 57;
+inline constexpr ErrKind kErrorNonBlocking		  = 58;
+inline constexpr ErrKind kErrorIPC				  = 59;
+inline constexpr ErrKind kErrorSign				  = 60;
+inline constexpr ErrKind kErrorInvalidCreds		  = 61;
+inline constexpr ErrKind kErrorCDTrayBroken		  = 62;
+inline constexpr ErrKind kErrorUnrecoverableDisk  = 63;
+inline constexpr ErrKind kErrorFileLocked		  = 64;
+inline constexpr ErrKind kErrorUnimplemented	  = -1;
+
+/// @brief The last error reported by the system to the process.
+IMPORT_C ErrKind kLastError;
diff --git a/dev/user/SystemCalls.h b/dev/user/SystemCalls.h
index 6a0c2845..2d14fa3c 100644
--- a/dev/user/SystemCalls.h
+++ b/dev/user/SystemCalls.h
@@ -16,13 +16,13 @@ Purpose: System Call Interface.
 /// @brief Types API.

 // ------------------------------------------------------------------------------------------ //

 

-typedef VoidPtr SCIObject;

+typedef VoidPtr Ref;

 

-typedef SCIObject IOObject;

-typedef IOObject  FSObject;

-typedef SCIObject DLLObject;

-typedef SCIObject ThreadObject;

-typedef SCIObject SocketObject;

+typedef Ref IORef;

+typedef Ref FSRef;

+typedef Ref DLLRef;

+typedef Ref ThreadRef;

+typedef Ref SocketRef;

 

 // ------------------------------------------------------------------------------------------ //

 /// @brief Dynamic Loader API.

@@ -32,18 +32,18 @@ typedef SCIObject SocketObject;
 /// @param symbol the symbol to look for

 /// @param dll_handle the DLL handle.

 /// @return the proc pointer.

-IMPORT_C SCIObject LdrGetDLLSymbolFromHandle(_Input const Char* symbol, _Input SCIObject dll_handle);

+IMPORT_C Ref LdrGetDLLSymbolFromHandle(_Input const Char* symbol, _Input Ref dll_handle);

 

 /// @brief Open DLL handle.

 /// @param path

 /// @param drv

 /// @return

-IMPORT_C SCIObject LdrOpenDLLHandle(_Input const Char* path, _Input const Char* drive_letter);

+IMPORT_C Ref LdrOpenDLLHandle(_Input const Char* path, _Input const Char* drive_letter);

 

 /// @brief Close DLL handle

 /// @param dll_handle

 /// @return

-IMPORT_C Void LdrCloseDLLHandle(_Input SCIObject* dll_handle);

+IMPORT_C UInt32 LdrCloseDLLHandle(_Input Ref* dll_handle);

 

 // ------------------------------------------------------------------------------------------ //

 // File API.

@@ -53,38 +53,38 @@ IMPORT_C Void LdrCloseDLLHandle(_Input SCIObject* dll_handle);
 /// @param fs_path the filesystem path.

 /// @param drive_letter drive name, use NULL to use default drive location.

 /// @return the file descriptor of the file.

-IMPORT_C SCIObject IoOpenFile(const Char* fs_path, const Char* drive_letter);

+IMPORT_C Ref IoOpenFile(const Char* fs_path, const Char* drive_letter);

 

 /// @brief Closes a file and flushes its content.

 /// @param file_desc the file descriptor.

 /// @return Function doesn't return a type.

-IMPORT_C Void IoCloseFile(_Input SCIObject file_desc);

+IMPORT_C Void IoCloseFile(_Input Ref file_desc);

 

 /// @brief Write data to a file.

 /// @param file_desc the file descriptor.

 /// @param out_data the data to write.

 /// @param sz_data the size of the data to write.

 /// @return the number of bytes written.

-IMPORT_C UInt32 IoWriteFile(_Input SCIObject file_desc, _Output VoidPtr out_data, SizeT sz_data);

+IMPORT_C UInt32 IoWriteFile(_Input Ref file_desc, _Output VoidPtr out_data, SizeT sz_data);

 

 /// @brief Read data from a file.

 /// @param file_desc the file descriptor.

 /// @param out_data the data to read.

 /// @param sz_data the size of the data to read.

-IMPORT_C UInt32 IoReadFile(_Input SCIObject file_desc, _Output VoidPtr* out_data, SizeT sz_data);

+IMPORT_C UInt32 IoReadFile(_Input Ref file_desc, _Output VoidPtr* out_data, SizeT sz_data);

 

 /// @brief Rewind the file pointer to the beginning of the file.

 /// @param file_desc the file descriptor.

 /// @return the number of bytes read.

-IMPORT_C UInt64 IoRewindFile(_Input SCIObject file_desc);

+IMPORT_C UInt64 IoRewindFile(_Input Ref file_desc);

 

 /// @brief Tell the current position of the file pointer.

 /// @param file_desc the file descriptor.

 /// @return the current position of the file pointer.

-IMPORT_C UInt64 IoTellFile(_Input SCIObject file_desc);

+IMPORT_C UInt64 IoTellFile(_Input Ref file_desc);

 

 /// @brief Seek file offset from file descriptor.

-IMPORT_C UInt64 IoSeekFile(_Input SCIObject file_desc, UInt64 file_offset);

+IMPORT_C UInt64 IoSeekFile(_Input Ref file_desc, UInt64 file_offset);

 

 // ------------------------------------------------------------------------

 // Process API.

@@ -121,10 +121,10 @@ IMPORT_C VoidPtr MmCreateHeap(_Input SizeT len, _Input UInt32 flags);
 /// @brief Destroys the pointer

 /// @param heap the heap itself.

 /// @return void.

-IMPORT_C Void MmDestroyHeap(_Input VoidPtr heap);

+IMPORT_C SInt32 MmDestroyHeap(_Input VoidPtr heap);

 

 /// @brief Change protection flags of a memory region.

-IMPORT_C Void MmSetHeapFlags(_Input VoidPtr heap, _Input UInt32 flags);

+IMPORT_C SInt32 MmSetHeapFlags(_Input VoidPtr heap, _Input UInt32 flags);

 

 /// @brief Change protection flags of a memory region.

 IMPORT_C UInt32 MmGetHeapFlags(_Input VoidPtr heap);

@@ -159,38 +159,38 @@ IMPORT_C SInt32 ErrGetLastError(Void);
 

 /// @brief Exit the current thread.

 /// @param exit_code the exit code.

-IMPORT_C Void ThrExitCurrentThread(_Input SInt32 exit_code);

+IMPORT_C SInt32 ThrExitCurrentThread(_Input SInt32 exit_code);

 

 /// @brief Exit the main thread.

 /// @param exit_code the exit code.

-IMPORT_C Void ThrExitMainThread(_Input SInt32 exit_code);

+IMPORT_C SInt32 ThrExitMainThread(_Input SInt32 exit_code);

 

 /// @brief Exit a thread.

 /// @param thread the thread to exit.

 /// @param exit_code the exit code.

-IMPORT_C Void ThrExitThread(_Input ThreadObject thread, _Input SInt32 exit_code);

+IMPORT_C SInt32 ThrExitThread(_Input ThreadRef thread, _Input SInt32 exit_code);

 

 /// @brief Thread procedure function type.

-typedef Void (*thread_proc_kind)(int argc, char** argv);

+typedef SInt32 (*thread_proc_kind)(SInt32 argc, Char** argv);

 

 /// @brief Creates a thread.

 /// @param procedure the thread procedure.

 /// @param argument_count number of arguments inside that thread.

 /// @param flags Thread flags.

 /// @return the thread object.

-IMPORT_C ThreadObject ThrCreateThread(thread_proc_kind procedure, SInt32 argument_count, SInt32 flags);

+IMPORT_C ThreadRef ThrCreateThread(thread_proc_kind procedure, SInt32 argument_count, SInt32 flags);

 

 /// @brief Yields the current thread.

 /// @param thread the thread to yield.

-IMPORT_C Void ThrYieldThread(ThreadObject thrd);

+IMPORT_C SInt32 ThrYieldThread(ThreadRef thrd);

 

 /// @brief Joins a thread.

 /// @param thread the thread to join.

-IMPORT_C Void ThrJoinThread(ThreadObject thrd);

+IMPORT_C SInt32 ThrJoinThread(ThreadRef thrd);

 

 /// @brief Detach a thread.

 /// @param thread the thread to detach.

-IMPORT_C Void ThrDetachThread(ThreadObject thrd);

+IMPORT_C SInt32 ThrDetachThread(ThreadRef thrd);

 

 // ------------------------------------------------------------------------

 // @brief Drive Management API.

@@ -215,7 +215,7 @@ IMPORT_C Char* DrvGetDriveLetterFromPath(_Input const Char* path);
 /// @param letter the letter (A..Z).

 /// @return the drive object.

 // ------------------------------------------------------------------------------------------ //

-IMPORT_C SCIObject DrvGetMountedDrive(_Input const Char letter);

+IMPORT_C Ref DrvGetMountedDrive(_Input const Char letter);

 

 // ------------------------------------------------------------------------------------------ //

 /// @brief Mount a drive.

@@ -241,7 +241,7 @@ IMPORT_C Void DrvUnmountDrive(_Input const Char letter);
 /// @return the event listener.

 // ------------------------------------------------------------------------------------------ //

 

-IMPORT_C Void EvtAddListener(_Input const Char* event_name, _Input SCIObject listener);

+IMPORT_C Void EvtAddListener(_Input const Char* event_name, _Input Ref listener);

 

 // ------------------------------------------------------------------------------------------ //

 /// @brief Remove an event listener.

@@ -250,7 +250,7 @@ IMPORT_C Void EvtAddListener(_Input const Char* event_name, _Input SCIObject lis
 /// @return the event listener.

 // ------------------------------------------------------------------------------------------ //

 

-IMPORT_C Void EvtRemoveListener(_Input const Char* event_name, _Input SCIObject listener);

+IMPORT_C Void EvtRemoveListener(_Input const Char* event_name, _Input Ref listener);

 

 // ------------------------------------------------------------------------------------------ //

 /// @brief Dispatch an event.

@@ -267,6 +267,7 @@ IMPORT_C VoidPtr EvtDispatchEvent(_Input const Char* event_name, _Input VoidPtr
 

 enum

 {

+	kPowerCodeInvalid,

 	kPowerCodeShutdown,

 	kPowerCodeReboot,

 	kPowerCodeSleep,

@@ -292,24 +293,24 @@ IMPORT_C SInt32 CdCloseTray(Void);
 // Printer API.

 // ------------------------------------------------------------------------------------------ //

 

-IMPORT_C SInt32 PrintOut(IOObject file /* nullptr to direct to stdout */, const Char* fmt, ...);

+IMPORT_C SInt32 PrintOut(IORef file /* nullptr to direct to stdout */, const Char* fmt, ...);

 

-IMPORT_C SInt32 PrintIn(IOObject file /* nullptr to direct to stdout */, const Char* fmt, ...);

+IMPORT_C SInt32 PrintIn(IORef file /* nullptr to direct to stdout */, const Char* fmt, ...);

 

-IMPORT_C IOObject PrintCreate(Void);

+IMPORT_C IORef PrintCreate(Void);

 

-IMPORT_C SInt32 PrintRelease(IOObject);

+IMPORT_C SInt32 PrintRelease(IORef);

 

-IMPORT_C IOObject PrintGet(const Char* path);

+IMPORT_C IORef PrintGet(const Char* path);

 

 // ------------------------------------------------------------------------------------------ //

 // @brief Scheduler/Debug API.

 // ------------------------------------------------------------------------------------------ //

 

-typedef SInt32 AffinityKind;

+typedef SInt32 AffinityRef;

 typedef UInt64 PID;

 

-IMPORT_C SInt32 SchedAffinity(PID, SInt32 req, AffinityKind* local);

+IMPORT_C SInt32 SchedAffinity(PID, SInt32 req, AffinityRef* local);

 

 IMPORT_C SInt32 SchedTrace(PID, SInt32 req, VoidPtr address, VoidPtr data);

 

diff --git a/dev/user/src/LPC.cc b/dev/user/src/LPC.cc
deleted file mode 100644
index f3f320b7..00000000
--- a/dev/user/src/LPC.cc
+++ /dev/null
@@ -1,10 +0,0 @@
-/* -------------------------------------------
-
-Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
-
-File: LPC.cc
-Purpose: Local Procedure Codes.
-
-------------------------------------------- */
-
-#include <user/LPC.h>