feat: kernel: new `kernel` process type, and usage of `explicit operator

bool`
feat: libSystem: minor tweaks.
feat: indexer: important fixes in `RemoveFlag`

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

5 files changed, 8 insertions, 83 deletions

diff --git a/dev/kernel/KernelKit/CodeMgr.h b/dev/kernel/KernelKit/CodeMgr.h
index c733bc47..fc737a90 100644
--- a/dev/kernel/KernelKit/CodeMgr.h
+++ b/dev/kernel/KernelKit/CodeMgr.h
@@ -14,9 +14,10 @@
 
 #pragma once
 
+#ifdef __NE_USE_PEF__
 #include <KernelKit/IPEFDylibObject.h>
-#include <KernelKit/PECodeMgr.h>
 #include <KernelKit/PEFCodeMgr.h>
+#endif
 
 /// @file CodeMgr.h
 /// @brief Code Manager header file.
diff --git a/dev/kernel/KernelKit/CoreProcessScheduler.h b/dev/kernel/KernelKit/CoreProcessScheduler.h
index f40ffc81..49e9363e 100644
--- a/dev/kernel/KernelKit/CoreProcessScheduler.h
+++ b/dev/kernel/KernelKit/CoreProcessScheduler.h
@@ -147,7 +147,8 @@ enum class ProcessSubsystem : Int32 {
   kProcessSubsystemUser,
   kProcessSubsystemService,
   kProcessSubsystemDriver,
-  kProcessSubsystemCount   = kProcessSubsystemDriver - kProcessSubsystemSecurity + 1,
+  kProcessSubsystemKernel,
+  kProcessSubsystemCount   = kProcessSubsystemKernel - kProcessSubsystemSecurity + 1,
   kProcessSubsystemInvalid = 0xFFFFFFF,
 };
 
diff --git a/dev/kernel/KernelKit/KernelTaskScheduler.h b/dev/kernel/KernelKit/KernelTaskScheduler.h
index ce0ff30d..1bc8975a 100644
--- a/dev/kernel/KernelKit/KernelTaskScheduler.h
+++ b/dev/kernel/KernelKit/KernelTaskScheduler.h
@@ -24,7 +24,7 @@ typedef ProcessID KID;
 class KERNEL_TASK final {
  public:
   Char               Name[kSchedNameLen] = {"KERNEL_TASK"};
-  ProcessSubsystem   SubSystem{ProcessSubsystem::kProcessSubsystemDriver};
+  ProcessSubsystem   SubSystem{ProcessSubsystem::kProcessSubsystemKernel};
   HAL::StackFramePtr StackFrame{nullptr};
   UInt8*             StackReserve{nullptr};
   SizeT              StackSize{kSchedMaxStackSz};
@@ -40,7 +40,7 @@ class KernelTaskHelper final {
  public:
   STATIC Bool Switch(HAL::StackFramePtr frame_ptr, ProcessID new_kid);
   STATIC Bool CanBeScheduled(const KERNEL_TASK& process);
-  STATIC ErrorOr<ProcessID> TheCurrentKID();
+  STATIC ErrorOr<KID> TheCurrentKID();
   STATIC SizeT              StartScheduling();
 };
 }  // namespace Kernel
\ No newline at end of file
diff --git a/dev/kernel/KernelKit/PECodeMgr.h b/dev/kernel/KernelKit/PECodeMgr.h
deleted file mode 100644
index 15c2b7ee..00000000
--- a/dev/kernel/KernelKit/PECodeMgr.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/* -------------------------------------------
-
-  Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
-
-  File: PECodeMgr.h
-  Purpose: PE32+ Code Mgr and Dylib mgr.
-
-  Revision History:
-
-  12/02/24: Added file (amlel)
-
-------------------------------------------- */
-
-#pragma once
-
-////////////////////////////////////////////////////
-
-// LAST REV: Mon Feb 12 13:52:01 CET 2024
-
-////////////////////////////////////////////////////
-
-#include <KernelKit/FileMgr.h>
-#include <KernelKit/LoaderInterface.h>
-#include <KernelKit/PE.h>
-#include <NeKit/ErrorOr.h>
-#include <NeKit/KString.h>
-
-#ifndef INC_PROCESS_SCHEDULER_H
-#include <KernelKit/ProcessScheduler.h>
-#endif
-
-#define kPeApplicationMime "application/vnd-portable-executable"
-
-namespace Kernel {
-///
-/// \name PE32Loader
-/// \brief PE32+ loader class.
-///
-class PE32Loader : public LoaderInterface {
- private:
-  explicit PE32Loader() = delete;
-
- public:
-  explicit PE32Loader(const VoidPtr blob);
-  explicit PE32Loader(const Char* path);
-  ~PE32Loader() override;
-
- public:
-  NE_COPY_DEFAULT(PE32Loader)
-
- public:
-  const Char* Path() override;
-  const Char* AsString() override;
-  const Char* MIME() override;
-
- public:
-  ErrorOr<VoidPtr> FindStart() override;
-  ErrorOr<VoidPtr> FindSymbol(const Char* name, Int32 kind) override;
-  ErrorOr<VoidPtr> GetBlob() override;
-
- public:
-  bool IsLoaded() noexcept;
-
- private:
-#ifdef __FSKIT_INCLUDES_NEFS__
-  OwnPtr<FileStream<Char, NeFileSystemMgr>> fFile;
-#elif defined(__FSKIT_INCLUDES_HEFS__)
-  OwnPtr<FileStream<Char, HeFileSystemMgr>> fFile;
-#else
-  OwnPtr<FileStream<Char>> fFile;
-#endif  // __FSKIT_INCLUDES_NEFS__
-
-  Ref<KString> fPath;
-  VoidPtr      fCachedBlob;
-  bool         fBad;
-};
-}  // namespace Kernel
\ No newline at end of file
diff --git a/dev/kernel/KernelKit/UserProcessScheduler.h b/dev/kernel/KernelKit/UserProcessScheduler.h
index e5b81f76..d106e511 100644
--- a/dev/kernel/KernelKit/UserProcessScheduler.h
+++ b/dev/kernel/KernelKit/UserProcessScheduler.h
@@ -86,7 +86,7 @@ class USER_PROCESS final {
   /***********************************************************************************/
   //! @brief boolean operator, check status.
   /***********************************************************************************/
-  operator bool();
+  explicit operator bool();
 
   /***********************************************************************************/
   ///! @brief Crashes the app, exits with code ~0.
@@ -192,7 +192,7 @@ class UserProcessScheduler final : public ISchedulable {
   NE_MOVE_DELETE(UserProcessScheduler)
 
  public:
-       operator bool();
+       explicit operator bool();
   bool operator!();
 
  public: