refactor syscall ABI and FAT32 driver to use request structs and string views natively, enforce handle access rights on object lookup, add scheduler statistics tracking, fix KiSchedule to prevent 50% idle throttling on CPU-bound threads, better document x64 initial user stack alignment, fix process teardown to properly signal exit events and manage thread counts, optimize doom file I/O with a custom handle struct to internally track position and size, add SubsystemData to TEB for generic thread-local state, apply PAGE_NX to non-executable PE sections in the loader, update native apps, tests, and shells to match new APIs, update kernel32 directory retrieval.

code/kernel/kmain.c

@@ -188,7 +188,7 @@ static void KiInitializeDrivers(BOOT_INFO* bootInfo, const HAL_API* hal) {
     KSTATUS s;
     FILE_OBJECT* f;
 
-    s = IoOpenFile("drivers\\drivers.ini", &f);
+    s = IoOpenFile(SYS_SV_LITERAL("drivers\\drivers.ini"), &f);
     if (s != STATUS_SUCCESS) {
         KePanic("KiInitializeDrivers: Failed to open drivers.ini (status %d)\n", s);
     }
@@ -222,7 +222,7 @@ static void KiInitializeDrivers(BOOT_INFO* bootInfo, const HAL_API* hal) {
         memcpy(path, "drivers\\", 8);
         memcpy(path + 8, runtimeKeys[i], len + 1);
 
-        s = IoOpenFile(path, &f);
+        s = IoOpenFile(SysSvFromCstr(path), &f);
         if (s != STATUS_SUCCESS) {
             DbgPrint("KiInitializeDrivers: Failed to open runtime driver: %s (%s)\n", runtimeKeys[i], path);
             continue; // Skip this driver but keep going with others
@@ -285,7 +285,7 @@ static PROCESS* KiLaunchUserProcess(const char* filePath, const char* args) {
     FILE_OBJECT* f;
 
     // Read the executable file into a raw buffer.
-    s = IoOpenFile(filePath, &f);
+    s = IoOpenFile(SysSvFromCstr(filePath), &f);
     DbgPrint("KiLaunchUserProcess: IoOpenFile: %d\n", s);
     if (s != STATUS_SUCCESS) {
         DbgPrint("Failed to load file: \"%s\"!\n", filePath);
@@ -323,7 +323,10 @@ static PROCESS* KiLaunchUserProcess(const char* filePath, const char* args) {
     }
     DbgPrint("Created process (PID %u) with command line: %s\n", proc->ProcessId, (args && args[0]) ? args : filePath);
 
-    s = KeSetupUserProcessEnvironment(proc, filePath, args, proc->CurrentDirectory);
+    s = KeSetupUserProcessEnvironment(proc,
+                                      SysSvFromCstr(filePath),
+                                      SysSvFromCstr(args),
+                                      SysSvFromCstr(proc->CurrentDirectory));
     if (!KSUCCESS(s)) {
         DbgPrint("KiLaunchUserProcess: Failed to build user process environment. Status: %d\n", s);
         MmFreePool(mem);
@@ -344,7 +347,7 @@ static PROCESS* KiLaunchUserProcess(const char* filePath, const char* args) {
     s = LdrResolveImportsForProcess(proc, imageBase);
     if (!KSUCCESS(s)) {
         DbgPrint("KiLaunchUserProcess: Failed to resolve EXE imports for %s (status %d)\n", filePath, s);
-        MmFreeUserMemory((void*)imageBase);
+        MmFreeUserImage((void*)imageBase, LdrGetImageSize(imageBase));
         ObDereferenceObject(&proc->Header);
         return 0;
     }
@@ -361,7 +364,7 @@ static PROCESS* KiLaunchUserProcess(const char* filePath, const char* args) {
         DbgPrint("KiLaunchUserProcess: Failed to create thread. Status: %d\n", s);
         proc->ImageBase = 0;
         proc->ImageSize = 0;
-        MmFreeUserMemory((void*)imageBase);
+        MmFreeUserImage((void*)imageBase, LdrGetImageSize(imageBase));
         ObDereferenceObject(&proc->Header);
         return 0;
     }