duct taped posix.dll (just like microsoft), new cursor, more info in the fault handlers, processes now have a parse-it-yourself cmdline, add SYS_WAIT_THREAD and SYS_GET_PROCESS_PID, writing still doesn't work

code/kernel/kmain.c

@@ -238,6 +238,18 @@ static PROCESS* LaunchUserProcess(const char* filePath) {
     }
     DbgPrint("Created process (PID %u) with command line: %s\n", proc->ProcessId, filePath);
 
+    strncpy(proc->Cmdline, filePath, sizeof(proc->Cmdline) - 1);
+
+    // proc->Cmdline is kernel pool (ffffc000...) - not readable at CPL=3.
+    // Copy into user memory before handing the pointer to the initial thread.
+    size_t cmdlineLen = strlen(proc->Cmdline) + 1;
+    char* userCmdline = (char*)MmAllocateUserMemory(cmdlineLen);
+    if (!userCmdline) {
+        DbgPrint("LaunchUserProcess: Failed to allocate user cmdline buffer.\n");
+        return (PROCESS*)0;
+    }
+    memcpy(userCmdline, proc->Cmdline, cmdlineLen);
+
     // Parse the raw PE file and map it into executable memory
     uintptr_t imageBase = 0;
     s = LdrLoadImage(mem, size, &imageBase, true);
@@ -248,7 +260,7 @@ static PROCESS* LaunchUserProcess(const char* filePath) {
     DbgPrint("LaunchUserProcess: PE Image mapped! Base 0x%llx, Entry 0x%llX\n", imageBase, entryPoint);
 
     // Create the main thread, pointing it to the PE Entry Point
-    s = KeCreateThread(proc, (uintptr_t)entryPoint, 0, PriorityNormal, &thread);
+    s = KeCreateThread(proc, (uintptr_t)entryPoint, (uintptr_t)userCmdline, PriorityNormal, &thread);
     if (!KSUCCESS(s)) {
         DbgPrint("LaunchUserProcess: Failed to create thread. Status: %d\n", s);
     }