3 files changed, 47 insertions, 1 deletions

diff --git a/src/core/hle/service/fs/archive.cpp b/src/core/hle/service/fs/archive.cpp
index 510d7320c..b7f97495c 100644
--- a/src/core/hle/service/fs/archive.cpp
+++ b/src/core/hle/service/fs/archive.cpp
@@ -330,6 +330,14 @@ ResultCode DeleteDirectoryFromArchive(ArchiveHandle archive_handle, const FileSy
                       ErrorSummary::Canceled, ErrorLevel::Status);
 }
 
+ResultCode CreateFileInArchive(Handle archive_handle, const FileSys::Path& path, u32 file_size) {
+    Archive* archive = GetArchive(archive_handle);
+    if (archive == nullptr)
+        return InvalidHandle(ErrorModule::FS);
+
+    return archive->backend->CreateFile(path, file_size);
+}
+
 ResultCode CreateDirectoryFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path) {
     Archive* archive = GetArchive(archive_handle);
     if (archive == nullptr)
diff --git a/src/core/hle/service/fs/archive.h b/src/core/hle/service/fs/archive.h
index a128276b6..0fd3aaa0c 100644
--- a/src/core/hle/service/fs/archive.h
+++ b/src/core/hle/service/fs/archive.h
@@ -83,6 +83,15 @@ ResultCode RenameFileBetweenArchives(ArchiveHandle src_archive_handle, const Fil
 ResultCode DeleteDirectoryFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path);
 
 /**
+ * Create a File in an Archive
+ * @param archive_handle Handle to an open Archive object
+ * @param path Path to the File inside of the Archive
+ * @param file_size The size of the new file, filled with zeroes
+ * @return File creation result code
+ */
+ResultCode CreateFileInArchive(Handle archive_handle, const FileSys::Path& path, u32 file_size);
+
+/**
  * Create 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/fs_user.cpp b/src/core/hle/service/fs/fs_user.cpp
index 8b908d691..1402abe83 100644
--- a/src/core/hle/service/fs/fs_user.cpp
+++ b/src/core/hle/service/fs/fs_user.cpp
@@ -226,6 +226,35 @@ static void DeleteDirectory(Service::Interface* self) {
 }
 
 /*
+ * FS_User::CreateFile service function
+ *  Inputs:
+ *      0 : Command header 0x08080202
+ *      2 : Archive handle lower word
+ *      3 : Archive handle upper word
+ *      4 : File path string type
+ *      5 : File path string size
+ *      7 : File size (filled with zeroes)
+ *      10: File path string data
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+static void CreateFile(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    ArchiveHandle archive_handle = MakeArchiveHandle(cmd_buff[2], cmd_buff[3]);
+    auto filename_type    = static_cast<FileSys::LowPathType>(cmd_buff[4]);
+    u32 filename_size     = cmd_buff[5];
+    u32 file_size         = cmd_buff[7];
+    u32 filename_ptr      = cmd_buff[10];
+
+    FileSys::Path file_path(filename_type, filename_size, filename_ptr);
+
+    LOG_DEBUG(Service_FS, "type=%d size=%d data=%s", filename_type, filename_size, file_path.DebugStr().c_str());
+
+    cmd_buff[1] = CreateFileInArchive(archive_handle, file_path, file_size).raw;
+}
+
+/*
  * FS_User::CreateDirectory service function
  *  Inputs:
  *      2 : Archive handle lower word
@@ -465,7 +494,7 @@ const FSUserInterface::FunctionInfo FunctionTable[] = {
     {0x08050244, RenameFile,            "RenameFile"},
     {0x08060142, DeleteDirectory,       "DeleteDirectory"},
     {0x08070142, nullptr,               "DeleteDirectoryRecursively"},
-    {0x08080202, nullptr,               "CreateFile"},
+    {0x08080202, CreateFile,            "CreateFile"},
     {0x08090182, CreateDirectory,       "CreateDirectory"},
     {0x080A0244, RenameDirectory,       "RenameDirectory"},
     {0x080B0102, OpenDirectory,         "OpenDirectory"},