3 files changed, 78 insertions, 1 deletions

diff --git a/src/core/hle/kernel/archive.cpp b/src/core/hle/kernel/archive.cpp
index 0bf31ea2f..bffe59952 100644
--- a/src/core/hle/kernel/archive.cpp
+++ b/src/core/hle/kernel/archive.cpp
@@ -410,6 +410,30 @@ Result CreateDirectoryFromArchive(Handle archive_handle, const FileSys::Path& pa
 }
 
 /**
+ * Rename a Directory between two Archives
+ * @param src_archive_handle Handle to the source Archive object
+ * @param src_path Path to the Directory inside of the source Archive
+ * @param dest_archive_handle Handle to the destination Archive object
+ * @param dest_path Path to the Directory inside of the destination Archive
+ * @return Whether rename succeeded
+ */
+Result RenameDirectoryBetweenArchives(Handle src_archive_handle, const FileSys::Path& src_path,
+                                      Handle dest_archive_handle, const FileSys::Path& dest_path) {
+    Archive* src_archive = Kernel::g_object_pool.GetFast<Archive>(src_archive_handle);
+    Archive* dest_archive = Kernel::g_object_pool.GetFast<Archive>(dest_archive_handle);
+    if (src_archive == nullptr || dest_archive == nullptr)
+        return -1;
+    if (src_archive == dest_archive) {
+        if (src_archive->backend->RenameDirectory(src_path, dest_path))
+            return 0;
+    } else {
+        // TODO: Implement renaming across archives
+        return -1;
+    }
+    return -1;
+}
+
+/**
  * Open a Directory from an Archive
  * @param archive_handle Handle to an open Archive object
  * @param path Path to the Directory inside of the Archive
diff --git a/src/core/hle/kernel/archive.h b/src/core/hle/kernel/archive.h
index 5158fbae8..9d071d315 100644
--- a/src/core/hle/kernel/archive.h
+++ b/src/core/hle/kernel/archive.h
@@ -80,6 +80,17 @@ Result DeleteDirectoryFromArchive(Handle archive_handle, const FileSys::Path& pa
 Result CreateDirectoryFromArchive(Handle archive_handle, const FileSys::Path& path);
 
 /**
+ * Rename a Directory between two Archives
+ * @param src_archive_handle Handle to the source Archive object
+ * @param src_path Path to the Directory inside of the source Archive
+ * @param dest_archive_handle Handle to the destination Archive object
+ * @param dest_path Path to the Directory inside of the destination Archive
+ * @return Whether rename succeeded
+ */
+Result RenameDirectoryBetweenArchives(Handle src_archive_handle, const FileSys::Path& src_path,
+                                      Handle dest_archive_handle, const FileSys::Path& dest_path);
+
+/**
  * Open a Directory from an Archive
  * @param archive_handle Handle to an open Archive object
  * @param path Path to the Directory inside of the Archive
diff --git a/src/core/hle/service/fs_user.cpp b/src/core/hle/service/fs_user.cpp
index e9756e2eb..f4b1a879c 100644
--- a/src/core/hle/service/fs_user.cpp
+++ b/src/core/hle/service/fs_user.cpp
@@ -267,6 +267,48 @@ static void CreateDirectory(Service::Interface* self) {
     DEBUG_LOG(KERNEL, "called");
 }
 
+/*
+ * FS_User::RenameDirectory service function
+ *  Inputs:
+ *      2 : Source archive handle lower word
+ *      3 : Source archive handle upper word
+ *      4 : Source dir path type
+ *      5 : Source dir path size
+ *      6 : Dest archive handle lower word
+ *      7 : Dest archive handle upper word
+ *      8 : Dest dir path type
+ *      9 : Dest dir path size
+ *      11: Source dir path string data
+ *      13: Dest dir path string
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+void RenameDirectory(Service::Interface* self) {
+    u32* cmd_buff = Service::GetCommandBuffer();
+
+    // TODO(Link Mauve): cmd_buff[2] and cmd_buff[6], aka archive handle lower word, aren't used according to
+    // 3dmoo's or ctrulib's implementations.  Triple check if it's really the case.
+    Handle src_archive_handle  = static_cast<Handle>(cmd_buff[3]);
+    auto src_dirname_type      = static_cast<FileSys::LowPathType>(cmd_buff[4]);
+    u32 src_dirname_size       = cmd_buff[5];
+    Handle dest_archive_handle = static_cast<Handle>(cmd_buff[7]);
+    auto dest_dirname_type     = static_cast<FileSys::LowPathType>(cmd_buff[8]);
+    u32 dest_dirname_size      = cmd_buff[9];
+    u32 src_dirname_ptr        = cmd_buff[11];
+    u32 dest_dirname_ptr       = cmd_buff[13];
+
+    FileSys::Path src_dir_path(src_dirname_type, src_dirname_size, src_dirname_ptr);
+    FileSys::Path dest_dir_path(dest_dirname_type, dest_dirname_size, dest_dirname_ptr);
+
+    DEBUG_LOG(KERNEL, "src_type=%d src_size=%d src_data=%s dest_type=%d dest_size=%d dest_data=%s",
+              src_dirname_type, src_dirname_size, src_dir_path.DebugStr().c_str(),
+              dest_dirname_type, dest_dirname_size, dest_dir_path.DebugStr().c_str());
+
+    cmd_buff[1] = Kernel::RenameDirectoryBetweenArchives(src_archive_handle, src_dir_path, dest_archive_handle, dest_dir_path);
+    
+    DEBUG_LOG(KERNEL, "called");
+}
+
 static void OpenDirectory(Service::Interface* self) {
     u32* cmd_buff = Service::GetCommandBuffer();
 
@@ -361,7 +403,7 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x08070142, nullptr,               "DeleteDirectoryRecursively"},
     {0x08080202, nullptr,               "CreateFile"},
     {0x08090182, CreateDirectory,       "CreateDirectory"},
-    {0x080A0244, nullptr,               "RenameDirectory"},
+    {0x080A0244, RenameDirectory,       "RenameDirectory"},
     {0x080B0102, OpenDirectory,         "OpenDirectory"},
     {0x080C00C2, OpenArchive,           "OpenArchive"},
     {0x080D0144, nullptr,               "ControlArchive"},