feat!: Add IFS layer within DriveMgr, and IFS API.

also:

 - Use ThreadID in AP system.
 - Refactor kernel according to new IFS layer.

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

3 files changed, 10 insertions, 8 deletions

diff --git a/dev/kernel/src/FS/NeFS+FileSystemParser.cc b/dev/kernel/src/FS/NeFS+FileSystemParser.cc
index 97b2ff36..dd0a1d9a 100644
--- a/dev/kernel/src/FS/NeFS+FileSystemParser.cc
+++ b/dev/kernel/src/FS/NeFS+FileSystemParser.cc
@@ -10,6 +10,7 @@
 #include <FirmwareKit/EPM.h>
 
 #include <KernelKit/DriveMgr.h>
+#include <KernelKit/IFS.h>
 #include <KernelKit/KPC.h>
 #include <KernelKit/ProcessScheduler.h>
 #include <KernelKit/UserMgr.h>
diff --git a/dev/kernel/src/DriveMgr+IO.cc b/dev/kernel/src/IFS.cc
index 9137c91e..ba2ec8c0 100644
--- a/dev/kernel/src/DriveMgr+IO.cc
+++ b/dev/kernel/src/IFS.cc
@@ -9,9 +9,9 @@
 
 /*************************************************************
  *
- * File: DriveMgr+IO.cc
+ * File: IFS.cc
  * Purpose: Filesystem to mountpoint interface.
- * Date: 3/26/24
+ * Date: 05/26/2025
  *
  * Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
  *
@@ -23,13 +23,13 @@
 #define fsi_ifs_read(DRV, TRAITS, MP) (MP->DRV()).fInput(TRAITS)
 
 namespace Kernel {
-/// @brief Read from newfs disk.
+/// @brief Read from fs disk.
 /// @param Mnt mounted interface.
 /// @param DrvTrait drive info
 /// @param DrvIndex drive index.
 /// @return
 Int32 fs_ifs_read(MountpointInterface* Mnt, DriveTrait& DrvTrait, Int32 DrvIndex) {
-  if (!Mnt) return 1;
+  if (!Mnt) return kErrorDisk;
 
   DrvTrait.fPacket.fPacketGood = false;
 
@@ -52,16 +52,16 @@ Int32 fs_ifs_read(MountpointInterface* Mnt, DriveTrait& DrvTrait, Int32 DrvIndex
     }
   }
 
-  return DrvTrait.fPacket.fPacketGood;
+  return DrvTrait.fPacket.fPacketGood ? kErrorSuccess : kErrorDisk;
 }
 
-/// @brief Write to newfs disk.
+/// @brief Write to fs disk.
 /// @param Mnt mounted interface.
 /// @param DrvTrait drive info
 /// @param DrvIndex drive index.
 /// @return
 Int32 fs_ifs_write(MountpointInterface* Mnt, DriveTrait& DrvTrait, Int32 DrvIndex) {
-  if (!Mnt) return 1;
+  if (!Mnt) return kErrorDisk;
 
   DrvTrait.fPacket.fPacketGood = false;
 
@@ -84,6 +84,6 @@ Int32 fs_ifs_write(MountpointInterface* Mnt, DriveTrait& DrvTrait, Int32 DrvInde
     }
   }
 
-  return DrvTrait.fPacket.fPacketGood;
+  return DrvTrait.fPacket.fPacketGood ? kErrorSuccess : kErrorDisk;
 }
 }  // namespace Kernel
\ No newline at end of file
diff --git a/dev/kernel/src/UserProcessScheduler.cc b/dev/kernel/src/UserProcessScheduler.cc
index f900f984..4bbd085a 100644
--- a/dev/kernel/src/UserProcessScheduler.cc
+++ b/dev/kernel/src/UserProcessScheduler.cc
@@ -126,6 +126,7 @@ ErrorOr<VoidPtr> USER_PROCESS::New(SizeT sz, SizeT pad_amount) {
 
 #ifdef __NE_VIRTUAL_MEMORY_SUPPORT__
   auto vm_register = kKernelVM;
+
   hal_write_cr3(this->VMRegister);
 
   auto ptr = mm_alloc_ptr(sz, Yes, Yes, pad_amount);