Fix XamContent return (!) and vfs use.

Progress on #305.

src/xenia/kernel/content_manager.cc

@@ -33,6 +33,7 @@ ContentPackage::ContentPackage(KernelState* kernel_state, std::string root_name,
   auto fs = kernel_state_->file_system();
   auto device =
       std::make_unique<vfs::HostPathDevice>(device_path_, package_path, false);
+  device->Initialize();
   fs->RegisterDevice(std::move(device));
   fs->RegisterSymbolicLink(root_name_ + ":", device_path_);
 }

src/xenia/kernel/objects/xuser_module.cc

@@ -177,8 +177,7 @@ X_STATUS XUserModule::GetOptHeader(uint8_t* membase, const xex2_header* header,
         break;
       default:
         // Data stored at offset to header.
-        field_value = uint32_t((uint8_t*)header - membase) +
-                      opt_header.offset;
+        field_value = uint32_t((uint8_t*)header - membase) + opt_header.offset;
         break;
     }
     break;

src/xenia/kernel/xam_content.cc

@@ -310,8 +310,8 @@ void XamContentCreateCore(PPCContext* ppc_context, KernelState* kernel_state,
   }
 
   if (overlapped_ptr) {
-    kernel_state->CompleteOverlappedImmediateEx(overlapped_ptr, disposition,
-                                                result, 0);
+    kernel_state->CompleteOverlappedImmediateEx(overlapped_ptr, result,
+                                                disposition, 0);
     SHIM_SET_RETURN_32(X_ERROR_IO_PENDING);
   } else {
     SHIM_SET_RETURN_32(result);

src/xenia/kernel/xam_info.cc

@@ -182,8 +182,8 @@ SHIM_CALL XamEnumerate_shim(PPCContext* ppc_context,
   auto e = kernel_state->object_table()->LookupObject<XEnumerator>(handle);
   if (!e) {
     if (overlapped_ptr) {
-      kernel_state->CompleteOverlappedImmediateEx(overlapped_ptr, 0,
-                                                  X_ERROR_INVALID_HANDLE, 0);
+      kernel_state->CompleteOverlappedImmediateEx(
+          overlapped_ptr, X_ERROR_INVALID_HANDLE, X_ERROR_INVALID_HANDLE, 0);
       SHIM_SET_RETURN_32(X_ERROR_IO_PENDING);
     } else {
       SHIM_SET_RETURN_32(X_ERROR_INVALID_HANDLE);

src/xenia/vfs/device.cc

@@ -19,9 +19,8 @@ Device::Device(const std::string& mount_path) : mount_path_(mount_path) {}
 Device::~Device() = default;
 
 void Device::Dump(StringBuffer* string_buffer) {
-  if (root_entry_) {
-    root_entry_->Dump(string_buffer, 0);
-  }
+  root_entry_->Dump(string_buffer, 0);
+}
 }
 
 Entry* Device::ResolvePath(const char* path) {
@@ -31,11 +30,6 @@ Entry* Device::ResolvePath(const char* path) {
 
   XELOGFS("Device::ResolvePath(%s)", path);
 
-  if (!root_entry_) {
-    // No content at all.
-    return nullptr;
-  }
-
   // Walk the path, one separator at a time.
   auto entry = root_entry_.get();
   auto path_parts = xe::split_path(path);

src/xenia/vfs/devices/host_path_device.cc

@@ -25,9 +25,14 @@ HostPathDevice::HostPathDevice(const std::string& mount_path,
 HostPathDevice::~HostPathDevice() = default;
 
 bool HostPathDevice::Initialize() {
-  if (!filesystem::PathExists(local_path_)) {
-    XELOGE("Host path does not exist");
-    return false;
+  if (!xe::filesystem::PathExists(local_path_)) {
+    if (!read_only_) {
+      // Create the path.
+      xe::filesystem::CreateFolder(local_path_);
+    } else {
+      XELOGE("Host path does not exist");
+      return false;
+    }
   }
 
   auto root_entry = new HostPathEntry(this, "", local_path_);
@@ -39,7 +44,7 @@ bool HostPathDevice::Initialize() {
 }
 
 void HostPathDevice::PopulateEntry(HostPathEntry* entry) {
-  auto child_infos = filesystem::ListFiles(entry->local_path());
+  auto child_infos = xe::filesystem::ListFiles(entry->local_path());
   for (auto& child_info : child_infos) {
     auto child =
         new HostPathEntry(this, xe::to_string(child_info.name),
@@ -48,7 +53,7 @@ void HostPathDevice::PopulateEntry(HostPathEntry* entry) {
     child->access_timestamp_ = child_info.access_timestamp;
     child->write_timestamp_ = child_info.write_timestamp;
 
-    if (child_info.type == filesystem::FileInfo::Type::kDirectory) {
+    if (child_info.type == xe::filesystem::FileInfo::Type::kDirectory) {
       child->attributes_ = kFileAttributeDirectory;
     } else {
       child->attributes_ = kFileAttributeNormal;
@@ -62,7 +67,7 @@ void HostPathDevice::PopulateEntry(HostPathEntry* entry) {
 
     entry->children_.push_back(std::unique_ptr<Entry>(child));
 
-    if (child_info.type == filesystem::FileInfo::Type::kDirectory) {
+    if (child_info.type == xe::filesystem::FileInfo::Type::kDirectory) {
       PopulateEntry(child);
     }
   }