From f4babecc6d72aae688ad85fc726e22dbd1f82219 Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Mon, 26 May 2025 20:29:57 +0200
Subject: 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>
---
 dev/kernel/src/DriveMgr+IO.cc              | 89 ------------------------------
 dev/kernel/src/FS/NeFS+FileSystemParser.cc |  1 +
 dev/kernel/src/IFS.cc                      | 89 ++++++++++++++++++++++++++++++
 dev/kernel/src/UserProcessScheduler.cc     |  1 +
 4 files changed, 91 insertions(+), 89 deletions(-)
 delete mode 100644 dev/kernel/src/DriveMgr+IO.cc
 create mode 100644 dev/kernel/src/IFS.cc

(limited to 'dev/kernel/src')

diff --git a/dev/kernel/src/DriveMgr+IO.cc b/dev/kernel/src/DriveMgr+IO.cc
deleted file mode 100644
index 9137c91e..00000000
--- a/dev/kernel/src/DriveMgr+IO.cc
+++ /dev/null
@@ -1,89 +0,0 @@
-/* -------------------------------------------
-
-  Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
-
-------------------------------------------- */
-
-#include <KernelKit/DriveMgr.h>
-#include <KernelKit/FileMgr.h>
-
-/*************************************************************
- *
- * File: DriveMgr+IO.cc
- * Purpose: Filesystem to mountpoint interface.
- * Date: 3/26/24
- *
- * Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
- *
- *************************************************************/
-
-/// Useful macros regarding the IFS.
-
-#define fsi_ifs_write(DRV, TRAITS, MP) (MP->DRV()).fOutput(TRAITS)
-#define fsi_ifs_read(DRV, TRAITS, MP) (MP->DRV()).fInput(TRAITS)
-
-namespace Kernel {
-/// @brief Read from newfs 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;
-
-  DrvTrait.fPacket.fPacketGood = false;
-
-  switch (DrvIndex) {
-    case MountpointInterface::kDriveIndexA: {
-      fsi_ifs_read(A, DrvTrait.fPacket, Mnt);
-      break;
-    }
-    case MountpointInterface::kDriveIndexB: {
-      fsi_ifs_read(B, DrvTrait.fPacket, Mnt);
-      break;
-    }
-    case MountpointInterface::kDriveIndexC: {
-      fsi_ifs_read(C, DrvTrait.fPacket, Mnt);
-      break;
-    }
-    case MountpointInterface::kDriveIndexD: {
-      fsi_ifs_read(D, DrvTrait.fPacket, Mnt);
-      break;
-    }
-  }
-
-  return DrvTrait.fPacket.fPacketGood;
-}
-
-/// @brief Write to newfs 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;
-
-  DrvTrait.fPacket.fPacketGood = false;
-
-  switch (DrvIndex) {
-    case MountpointInterface::kDriveIndexA: {
-      fsi_ifs_write(A, DrvTrait.fPacket, Mnt);
-      break;
-    }
-    case MountpointInterface::kDriveIndexB: {
-      fsi_ifs_write(B, DrvTrait.fPacket, Mnt);
-      break;
-    }
-    case MountpointInterface::kDriveIndexC: {
-      fsi_ifs_write(C, DrvTrait.fPacket, Mnt);
-      break;
-    }
-    case MountpointInterface::kDriveIndexD: {
-      fsi_ifs_write(D, DrvTrait.fPacket, Mnt);
-      break;
-    }
-  }
-
-  return DrvTrait.fPacket.fPacketGood;
-}
-}  // namespace Kernel
\ No newline at end of file
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/IFS.cc b/dev/kernel/src/IFS.cc
new file mode 100644
index 00000000..ba2ec8c0
--- /dev/null
+++ b/dev/kernel/src/IFS.cc
@@ -0,0 +1,89 @@
+/* -------------------------------------------
+
+  Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#include <KernelKit/DriveMgr.h>
+#include <KernelKit/FileMgr.h>
+
+/*************************************************************
+ *
+ * File: IFS.cc
+ * Purpose: Filesystem to mountpoint interface.
+ * Date: 05/26/2025
+ *
+ * Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
+ *
+ *************************************************************/
+
+/// Useful macros regarding the IFS.
+
+#define fsi_ifs_write(DRV, TRAITS, MP) (MP->DRV()).fOutput(TRAITS)
+#define fsi_ifs_read(DRV, TRAITS, MP) (MP->DRV()).fInput(TRAITS)
+
+namespace Kernel {
+/// @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 kErrorDisk;
+
+  DrvTrait.fPacket.fPacketGood = false;
+
+  switch (DrvIndex) {
+    case MountpointInterface::kDriveIndexA: {
+      fsi_ifs_read(A, DrvTrait.fPacket, Mnt);
+      break;
+    }
+    case MountpointInterface::kDriveIndexB: {
+      fsi_ifs_read(B, DrvTrait.fPacket, Mnt);
+      break;
+    }
+    case MountpointInterface::kDriveIndexC: {
+      fsi_ifs_read(C, DrvTrait.fPacket, Mnt);
+      break;
+    }
+    case MountpointInterface::kDriveIndexD: {
+      fsi_ifs_read(D, DrvTrait.fPacket, Mnt);
+      break;
+    }
+  }
+
+  return DrvTrait.fPacket.fPacketGood ? kErrorSuccess : kErrorDisk;
+}
+
+/// @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 kErrorDisk;
+
+  DrvTrait.fPacket.fPacketGood = false;
+
+  switch (DrvIndex) {
+    case MountpointInterface::kDriveIndexA: {
+      fsi_ifs_write(A, DrvTrait.fPacket, Mnt);
+      break;
+    }
+    case MountpointInterface::kDriveIndexB: {
+      fsi_ifs_write(B, DrvTrait.fPacket, Mnt);
+      break;
+    }
+    case MountpointInterface::kDriveIndexC: {
+      fsi_ifs_write(C, DrvTrait.fPacket, Mnt);
+      break;
+    }
+    case MountpointInterface::kDriveIndexD: {
+      fsi_ifs_write(D, DrvTrait.fPacket, Mnt);
+      break;
+    }
+  }
+
+  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);
-- 
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