[FS] Add directory stuff, clean up

src/core/kernel/directory_operations.cpp

@@ -0,0 +1,46 @@
+#include "kernel.hpp"
+
+namespace DirectoryOps {
+	enum : u32 {
+		Read = 0x08010042,
+		Close = 0x08020000
+	};
+}
+
+namespace Result {
+	enum : u32 {
+		Success = 0
+	};
+}
+
+void Kernel::handleDirectoryOperation(u32 messagePointer, Handle directory) {
+	const u32 cmd = mem.read32(messagePointer);
+	switch (cmd) {
+		case DirectoryOps::Close: closeDirectory(messagePointer, directory); break;
+		case DirectoryOps::Read: readDirectory(messagePointer, directory); break;
+		default: Helpers::panic("Unknown directory operation: %08X", cmd);
+	}
+}
+
+void Kernel::closeDirectory(u32 messagePointer, Handle directory) {
+	logFileIO("Closed directory %X\n", directory);
+
+	const auto p = getObject(directory, KernelObjectType::Directory);
+	if (p == nullptr) [[unlikely]] {
+		Helpers::panic("Called CloseFile on non-existent file");
+	}
+
+	p->getData<DirectorySession>()->isOpen = false;
+	mem.write32(messagePointer + 4, Result::Success);
+}
+
+
+void Kernel::readDirectory(u32 messagePointer, Handle directory) {
+	const u32 entryCount = mem.read32(messagePointer + 4);
+	const u32 outPointer = mem.read32(messagePointer + 12);
+	logFileIO("Directory::Read (handle = %X, entry count = %d, out pointer = %08X)\n", directory, entryCount, outPointer);
+	Helpers::panic("Unimplemented FsDir::Read");
+
+	mem.write32(messagePointer + 4, Result::Success);
+	mem.write32(messagePointer + 8, 0);
+}

src/core/kernel/ports.cpp

@@ -91,6 +91,14 @@ void Kernel::sendSyncRequest() {
 		return;
 	}
 
+	// Check if our sync request is targetting a directory instead of a service
+	bool isDirectoryOperation = getObject(handle, KernelObjectType::Directory) != nullptr;
+	if (isDirectoryOperation) {
+		handleDirectoryOperation(messagePointer, handle);
+		regs[0] = SVCResult::Success;
+		return;
+	}
+
 	// If we're actually communicating with a port
 	const auto session = getObject(handle, KernelObjectType::Session);
 	if (session == nullptr) [[unlikely]] {