diff --git a/Source/Core/Core/Boot/Boot.cpp b/Source/Core/Core/Boot/Boot.cpp
index ac052114818f..a30b5c31000b 100644
--- a/Source/Core/Core/Boot/Boot.cpp
+++ b/Source/Core/Core/Boot/Boot.cpp
@@ -478,8 +478,8 @@ void UpdateStateFlags(std::function<void(StateFlags*)> update_function)
   const std::string file_path = Common::GetTitleDataPath(Titles::SYSTEM_MENU) + "/" WII_STATE;
   const auto fs = IOS::HLE::GetIOS()->GetFS();
   constexpr IOS::HLE::FS::Mode rw_mode = IOS::HLE::FS::Mode::ReadWrite;
-  const auto file = fs->CreateAndOpenFile(IOS::SYSMENU_UID, IOS::SYSMENU_GID, file_path, rw_mode,
-                                          rw_mode, rw_mode);
+  const auto file = fs->CreateAndOpenFile(IOS::SYSMENU_UID, IOS::SYSMENU_GID, file_path,
+                                          {rw_mode, rw_mode, rw_mode});
   if (!file)
     return;
 
diff --git a/Source/Core/Core/Boot/Boot_BS2Emu.cpp b/Source/Core/Core/Boot/Boot_BS2Emu.cpp
index 3ff0a86e255e..aa61807fa778 100644
--- a/Source/Core/Core/Boot/Boot_BS2Emu.cpp
+++ b/Source/Core/Core/Boot/Boot_BS2Emu.cpp
@@ -269,7 +269,7 @@ bool CBoot::SetupWiiMemory()
 
   constexpr IOS::HLE::FS::Mode rw_mode = IOS::HLE::FS::Mode::ReadWrite;
   const auto settings_file = fs->CreateAndOpenFile(IOS::SYSMENU_UID, IOS::SYSMENU_GID,
-                                                   settings_file_path, rw_mode, rw_mode, rw_mode);
+                                                   settings_file_path, {rw_mode, rw_mode, rw_mode});
   if (!settings_file || !settings_file->Write(gen.GetBytes().data(), gen.GetBytes().size()))
   {
     PanicAlertT("SetupWiiMemory: Can't create setting.txt file");
@@ -343,7 +343,7 @@ static void WriteEmptyPlayRecord()
   const auto fs = IOS::HLE::GetIOS()->GetFS();
   constexpr IOS::HLE::FS::Mode rw_mode = IOS::HLE::FS::Mode::ReadWrite;
   const auto playrec_file = fs->CreateAndOpenFile(IOS::SYSMENU_UID, IOS::SYSMENU_GID, file_path,
-                                                  rw_mode, rw_mode, rw_mode);
+                                                  {rw_mode, rw_mode, rw_mode});
   if (!playrec_file)
     return;
   std::vector<u8> empty_record(0x80);
diff --git a/Source/Core/Core/HW/WiiSave.cpp b/Source/Core/Core/HW/WiiSave.cpp
index 073bc256fb5c..cf31ca18c417 100644
--- a/Source/Core/Core/HW/WiiSave.cpp
+++ b/Source/Core/Core/HW/WiiSave.cpp
@@ -205,9 +205,8 @@ class NandStorage final : public Storage
       return false;
 
     const std::string banner_file_path = m_data_dir + "/banner.bin";
-    const std::tuple<FS::Mode, FS::Mode, FS::Mode> modes = GetFsMode(header.permissions);
-    const auto file = m_fs->CreateAndOpenFile(*m_uid, *m_gid, banner_file_path, std::get<0>(modes),
-                                              std::get<1>(modes), std::get<2>(modes));
+    const FS::Modes modes = GetFsMode(header.permissions);
+    const auto file = m_fs->CreateAndOpenFile(*m_uid, *m_gid, banner_file_path, modes);
     return file && file->Write(header.banner, header.banner_size);
   }
 
@@ -220,11 +219,10 @@ class NandStorage final : public Storage
 
     for (const SaveFile& file : files)
     {
-      const std::tuple<FS::Mode, FS::Mode, FS::Mode> modes = GetFsMode(file.mode);
+      const FS::Modes modes = GetFsMode(file.mode);
       if (file.type == SaveFile::Type::File)
       {
-        const auto raw_file = m_fs->CreateAndOpenFile(*m_uid, *m_gid, file.path, std::get<0>(modes),
-                                                      std::get<1>(modes), std::get<2>(modes));
+        const auto raw_file = m_fs->CreateAndOpenFile(*m_uid, *m_gid, file.path, modes);
         const std::optional<std::vector<u8>>& data = *file.data;
         if (!data || !raw_file || !raw_file->Write(data->data(), data->size()))
           return false;
@@ -235,9 +233,7 @@ class NandStorage final : public Storage
         if (!meta || meta->is_file)
           return false;
 
-        const FS::ResultCode result =
-            m_fs->CreateDirectory(*m_uid, *m_gid, file.path, 0, std::get<0>(modes),
-                                  std::get<1>(modes), std::get<2>(modes));
+        const FS::ResultCode result = m_fs->CreateDirectory(*m_uid, *m_gid, file.path, 0, modes);
         if (result != FS::ResultCode::Success)
           return false;
       }
@@ -266,7 +262,7 @@ class NandStorage final : public Storage
         return;
 
       SaveFile save_file;
-      save_file.mode = GetBinMode(*metadata);
+      save_file.mode = GetBinMode(metadata->modes);
       save_file.attributes = 0;
       save_file.type = metadata->is_file ? SaveFile::Type::File : SaveFile::Type::Directory;
       save_file.path = path;
@@ -298,20 +294,20 @@ class NandStorage final : public Storage
     m_gid = metadata->gid;
   }
 
-  static constexpr std::tuple<FS::Mode, FS::Mode, FS::Mode> GetFsMode(u8 bin_mode)
+  static constexpr FS::Modes GetFsMode(u8 bin_mode)
   {
     return {FS::Mode(bin_mode >> 4 & 3), FS::Mode(bin_mode >> 2 & 3), FS::Mode(bin_mode >> 0 & 3)};
   }
 
-  static constexpr u8 GetBinMode(const FS::Metadata& meta)
+  static constexpr u8 GetBinMode(const FS::Modes& modes)
   {
-    return u8(meta.owner_mode) << 4 | u8(meta.group_mode) << 2 | u8(meta.other_mode) << 0;
+    return u8(modes.owner) << 4 | u8(modes.group) << 2 | u8(modes.other) << 0;
   }
 
   u8 GetBinMode(const std::string& path) const
   {
     if (const FS::Result<FS::Metadata> meta = m_fs->GetMetadata(*m_uid, *m_gid, path))
-      return GetBinMode(*meta);
+      return GetBinMode(meta->modes);
     return 0;
   }
 
diff --git a/Source/Core/Core/IOS/ES/ES.cpp b/Source/Core/Core/IOS/ES/ES.cpp
index 227f6d78fdcc..2c3b9c73c353 100644
--- a/Source/Core/Core/IOS/ES/ES.cpp
+++ b/Source/Core/Core/IOS/ES/ES.cpp
@@ -39,24 +39,22 @@ struct DirectoryToCreate
 {
   const char* path;
   FS::FileAttribute attribute;
-  FS::Mode owner_mode;
-  FS::Mode group_mode;
-  FS::Mode other_mode;
+  FS::Modes modes;
   FS::Uid uid = PID_KERNEL;
   FS::Gid gid = PID_KERNEL;
 };
 
+constexpr FS::Modes public_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::ReadWrite};
 constexpr std::array<DirectoryToCreate, 9> s_directories_to_create = {{
-    {"/sys", 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None},
-    {"/ticket", 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None},
-    {"/title", 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::Read},
-    {"/shared1", 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None},
-    {"/shared2", 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::ReadWrite},
-    {"/tmp", 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::ReadWrite},
-    {"/import", 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None},
-    {"/meta", 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::ReadWrite, SYSMENU_UID,
-     SYSMENU_GID},
-    {"/wfs", 0, FS::Mode::ReadWrite, FS::Mode::None, FS::Mode::None, PID_UNKNOWN, PID_UNKNOWN},
+    {"/sys", 0, {FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None}},
+    {"/ticket", 0, {FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None}},
+    {"/title", 0, {FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::Read}},
+    {"/shared1", 0, {FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None}},
+    {"/shared2", 0, public_modes},
+    {"/tmp", 0, public_modes},
+    {"/import", 0, {FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None}},
+    {"/meta", 0, public_modes, SYSMENU_UID, SYSMENU_GID},
+    {"/wfs", 0, {FS::Mode::ReadWrite, FS::Mode::None, FS::Mode::None}, PID_UNKNOWN, PID_UNKNOWN},
 }};
 
 ES::ES(Kernel& ios, const std::string& device_name) : Device(ios, device_name)
@@ -66,14 +64,13 @@ ES::ES(Kernel& ios, const std::string& device_name) : Device(ios, device_name)
     // Note: ES sets its own UID and GID to 0/0 at boot, so all filesystem accesses in ES are done
     // as UID 0 even though its PID is 1.
     const auto result = m_ios.GetFS()->CreateDirectory(PID_KERNEL, PID_KERNEL, directory.path,
-                                                       directory.attribute, directory.owner_mode,
-                                                       directory.group_mode, directory.other_mode);
+                                                       directory.attribute, directory.modes);
     if (result != FS::ResultCode::Success && result != FS::ResultCode::AlreadyExists)
       ERROR_LOG(IOS_ES, "Failed to create %s: error %d", directory.path, FS::ConvertResult(result));
 
     // Now update the UID/GID and other attributes.
     m_ios.GetFS()->SetMetadata(0, directory.path, directory.uid, directory.gid, directory.attribute,
-                               directory.owner_mode, directory.group_mode, directory.other_mode);
+                               directory.modes);
   }
 
   FinishAllStaleImports();
@@ -623,9 +620,9 @@ static s32 WriteTmdForDiVerify(FS::FileSystem* fs, const IOS::ES::TMDReader& tmd
 {
   const std::string temp_path = "/tmp/title.tmd";
   fs->Delete(PID_KERNEL, PID_KERNEL, temp_path);
+  constexpr FS::Modes internal_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None};
   {
-    const auto file = fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, temp_path, FS::Mode::ReadWrite,
-                                            FS::Mode::ReadWrite, FS::Mode::None);
+    const auto file = fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, temp_path, internal_modes);
     if (!file)
       return FS::ConvertResult(file.Error());
     if (!file->Write(tmd.GetBytes().data(), tmd.GetBytes().size()))
@@ -634,13 +631,12 @@ static s32 WriteTmdForDiVerify(FS::FileSystem* fs, const IOS::ES::TMDReader& tmd
 
   const std::string tmd_dir = Common::GetTitleContentPath(tmd.GetTitleId());
   const std::string tmd_path = Common::GetTMDFileName(tmd.GetTitleId());
-  const auto result = fs->CreateFullPath(PID_KERNEL, PID_KERNEL, tmd_path, 0, FS::Mode::ReadWrite,
-                                         FS::Mode::ReadWrite, FS::Mode::Read);
+  constexpr FS::Modes parent_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::Read};
+  const auto result = fs->CreateFullPath(PID_KERNEL, PID_KERNEL, tmd_path, 0, parent_modes);
   if (result != FS::ResultCode::Success)
     return FS::ConvertResult(result);
 
-  fs->SetMetadata(PID_KERNEL, tmd_dir, PID_KERNEL, PID_KERNEL, 0, FS::Mode::ReadWrite,
-                  FS::Mode::ReadWrite, FS::Mode::None);
+  fs->SetMetadata(PID_KERNEL, tmd_dir, PID_KERNEL, PID_KERNEL, 0, internal_modes);
   return FS::ConvertResult(fs->Rename(PID_KERNEL, PID_KERNEL, temp_path, tmd_path));
 }
 
@@ -678,10 +674,10 @@ s32 ES::DIVerify(const IOS::ES::TMDReader& tmd, const IOS::ES::TicketReader& tic
 
   const std::string data_dir = Common::GetTitleDataPath(tmd.GetTitleId());
   // Might already exist, so we only need to check whether the second operation succeeded.
-  fs->CreateDirectory(PID_KERNEL, PID_KERNEL, data_dir, 0, FS::Mode::ReadWrite, FS::Mode::None,
-                      FS::Mode::None);
-  return FS::ConvertResult(fs->SetMetadata(0, data_dir, m_ios.GetUidForPPC(), m_ios.GetGidForPPC(),
-                                           0, FS::Mode::ReadWrite, FS::Mode::None, FS::Mode::None));
+  constexpr FS::Modes data_dir_modes{FS::Mode::ReadWrite, FS::Mode::None, FS::Mode::None};
+  fs->CreateDirectory(PID_KERNEL, PID_KERNEL, data_dir, 0, data_dir_modes);
+  return FS::ConvertResult(
+      fs->SetMetadata(0, data_dir, m_ios.GetUidForPPC(), m_ios.GetGidForPPC(), 0, data_dir_modes));
 }
 
 ReturnCode ES::CheckStreamKeyPermissions(const u32 uid, const u8* ticket_view,
@@ -877,8 +873,8 @@ ReturnCode ES::WriteNewCertToStore(const IOS::ES::CertReader& cert)
 
   // Otherwise, write the new cert at the end of the store.
   const auto store_file =
-      m_ios.GetFS()->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, CERT_STORE_PATH, FS::Mode::ReadWrite,
-                                       FS::Mode::ReadWrite, FS::Mode::Read);
+      m_ios.GetFS()->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, CERT_STORE_PATH,
+                                       {FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::Read});
   if (!store_file || !store_file->Seek(0, FS::SeekMode::End) ||
       !store_file->Write(cert.GetBytes().data(), cert.GetBytes().size()))
   {
diff --git a/Source/Core/Core/IOS/ES/Formats.cpp b/Source/Core/Core/IOS/ES/Formats.cpp
index 9585cf5d6f68..9e107ce6b476 100644
--- a/Source/Core/Core/IOS/ES/Formats.cpp
+++ b/Source/Core/Core/IOS/ES/Formats.cpp
@@ -591,9 +591,9 @@ bool SharedContentMap::WriteEntries() const
   const std::string temp_path = "/tmp/content.map";
   // Atomically write the new content map.
   {
-    const auto file =
-        m_fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, temp_path, HLE::FS::Mode::ReadWrite,
-                                HLE::FS::Mode::ReadWrite, HLE::FS::Mode::None);
+    constexpr HLE::FS::Modes modes{HLE::FS::Mode::ReadWrite, HLE::FS::Mode::ReadWrite,
+                                   HLE::FS::Mode::None};
+    const auto file = m_fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, temp_path, modes);
     if (!file || !file->Write(m_entries.data(), m_entries.size()))
       return false;
   }
@@ -665,9 +665,9 @@ u32 UIDSys::GetOrInsertUIDForTitle(const u64 title_id)
   const u64 swapped_title_id = Common::swap64(title_id);
   const u32 swapped_uid = Common::swap32(uid);
 
-  const auto file =
-      m_fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, UID_MAP_PATH, HLE::FS::Mode::ReadWrite,
-                              HLE::FS::Mode::ReadWrite, HLE::FS::Mode::None);
+  constexpr HLE::FS::Modes modes{HLE::FS::Mode::ReadWrite, HLE::FS::Mode::ReadWrite,
+                                 HLE::FS::Mode::None};
+  const auto file = m_fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, UID_MAP_PATH, modes);
   if (!file || !file->Seek(0, HLE::FS::SeekMode::End) || !file->Write(&swapped_title_id, 1) ||
       !file->Write(&swapped_uid, 1))
   {
diff --git a/Source/Core/Core/IOS/ES/NandUtils.cpp b/Source/Core/Core/IOS/ES/NandUtils.cpp
index a28fc56125d6..0e9952cdb698 100644
--- a/Source/Core/Core/IOS/ES/NandUtils.cpp
+++ b/Source/Core/Core/IOS/ES/NandUtils.cpp
@@ -222,15 +222,19 @@ static bool DeleteDirectoriesIfEmpty(FS::FileSystem* fs, const std::string& path
   return true;
 }
 
+constexpr FS::Modes title_dir_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::Read};
+constexpr FS::Modes content_dir_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None};
+constexpr FS::Modes data_dir_modes{FS::Mode::ReadWrite, FS::Mode::None, FS::Mode::None};
+
 bool ES::CreateTitleDirectories(u64 title_id, u16 group_id) const
 {
   const auto fs = m_ios.GetFS();
 
   const std::string content_dir = Common::GetTitleContentPath(title_id);
-  const auto result1 = fs->CreateFullPath(PID_KERNEL, PID_KERNEL, content_dir + '/', 0,
-                                          FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::Read);
-  const auto result2 = fs->SetMetadata(PID_KERNEL, content_dir, PID_KERNEL, PID_KERNEL, 0,
-                                       FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None);
+  const auto result1 =
+      fs->CreateFullPath(PID_KERNEL, PID_KERNEL, content_dir + '/', 0, title_dir_modes);
+  const auto result2 =
+      fs->SetMetadata(PID_KERNEL, content_dir, PID_KERNEL, PID_KERNEL, 0, content_dir_modes);
   if (result1 != FS::ResultCode::Success || result2 != FS::ResultCode::Success)
   {
     ERROR_LOG(IOS_ES, "Failed to create or set metadata on content dir for %016" PRIx64, title_id);
@@ -239,10 +243,9 @@ bool ES::CreateTitleDirectories(u64 title_id, u16 group_id) const
 
   const std::string data_dir = Common::GetTitleDataPath(title_id);
   const auto data_dir_contents = fs->ReadDirectory(PID_KERNEL, PID_KERNEL, data_dir);
-  if (!data_dir_contents &&
-      (data_dir_contents.Error() != FS::ResultCode::NotFound ||
-       fs->CreateDirectory(PID_KERNEL, PID_KERNEL, data_dir, 0, FS::Mode::ReadWrite, FS::Mode::None,
-                           FS::Mode::None) != FS::ResultCode::Success))
+  if (!data_dir_contents && (data_dir_contents.Error() != FS::ResultCode::NotFound ||
+                             fs->CreateDirectory(PID_KERNEL, PID_KERNEL, data_dir, 0,
+                                                 data_dir_modes) != FS::ResultCode::Success))
   {
     ERROR_LOG(IOS_ES, "Failed to create data dir for %016" PRIx64, title_id);
     return false;
@@ -250,8 +253,7 @@ bool ES::CreateTitleDirectories(u64 title_id, u16 group_id) const
 
   IOS::ES::UIDSys uid_sys{fs};
   const u32 uid = uid_sys.GetOrInsertUIDForTitle(title_id);
-  if (fs->SetMetadata(0, data_dir, uid, group_id, 0, FS::Mode::ReadWrite, FS::Mode::None,
-                      FS::Mode::None) != FS::ResultCode::Success)
+  if (fs->SetMetadata(0, data_dir, uid, group_id, 0, data_dir_modes) != FS::ResultCode::Success)
   {
     ERROR_LOG(IOS_ES, "Failed to set metadata on data dir for %016" PRIx64, title_id);
     return false;
@@ -267,8 +269,8 @@ bool ES::InitImport(const IOS::ES::TMDReader& tmd)
 
   const auto fs = m_ios.GetFS();
   const std::string import_content_dir = Common::GetImportTitlePath(tmd.GetTitleId()) + "/content";
-  const auto result = fs->CreateFullPath(PID_KERNEL, PID_KERNEL, import_content_dir + '/', 0,
-                                         FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None);
+  const auto result =
+      fs->CreateFullPath(PID_KERNEL, PID_KERNEL, import_content_dir + '/', 0, content_dir_modes);
   if (result != FS::ResultCode::Success)
   {
     ERROR_LOG(IOS_ES, "InitImport: Failed to create content dir for %016" PRIx64, tmd.GetTitleId());
@@ -330,8 +332,7 @@ bool ES::WriteImportTMD(const IOS::ES::TMDReader& tmd)
   const auto fs = m_ios.GetFS();
   const std::string tmd_path = "/tmp/title.tmd";
   {
-    const auto file = fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, tmd_path, FS::Mode::ReadWrite,
-                                            FS::Mode::ReadWrite, FS::Mode::None);
+    const auto file = fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, tmd_path, content_dir_modes);
     if (!file || !file->Write(tmd.GetBytes().data(), tmd.GetBytes().size()))
       return false;
   }
diff --git a/Source/Core/Core/IOS/ES/TitleManagement.cpp b/Source/Core/Core/IOS/ES/TitleManagement.cpp
index 04831a6108b7..f423768d60d6 100644
--- a/Source/Core/Core/IOS/ES/TitleManagement.cpp
+++ b/Source/Core/Core/IOS/ES/TitleManagement.cpp
@@ -33,11 +33,9 @@ static ReturnCode WriteTicket(FS::FileSystem* fs, const IOS::ES::TicketReader& t
   const u64 title_id = ticket.GetTitleId();
 
   const std::string path = Common::GetTicketFileName(title_id);
-  fs->CreateFullPath(PID_KERNEL, PID_KERNEL, path, 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite,
-                     FS::Mode::None);
-
-  const auto file = fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, path, FS::Mode::ReadWrite,
-                                          FS::Mode::ReadWrite, FS::Mode::None);
+  constexpr FS::Modes ticket_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None};
+  fs->CreateFullPath(PID_KERNEL, PID_KERNEL, path, 0, ticket_modes);
+  const auto file = fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, path, ticket_modes);
   if (!file)
     return FS::ConvertResult(file.Error());
 
@@ -400,8 +398,8 @@ ReturnCode ES::ImportContentEnd(Context& context, u32 content_fd)
       "/tmp/" + content_path.substr(content_path.find_last_of('/') + 1, std::string::npos);
 
   {
-    const auto file = fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, temp_path, FS::Mode::ReadWrite,
-                                            FS::Mode::ReadWrite, FS::Mode::None);
+    constexpr FS::Modes content_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::None};
+    const auto file = fs->CreateAndOpenFile(PID_KERNEL, PID_KERNEL, temp_path, content_modes);
     if (!file || !file->Write(decrypted_data.data(), content_info.size))
     {
       ERROR_LOG(IOS_ES, "ImportContentEnd: Failed to write to %s", temp_path.c_str());
diff --git a/Source/Core/Core/IOS/FS/FileSystem.cpp b/Source/Core/Core/IOS/FS/FileSystem.cpp
index 06916c6fed78..3fa652fb22ed 100644
--- a/Source/Core/Core/IOS/FS/FileSystem.cpp
+++ b/Source/Core/Core/IOS/FS/FileSystem.cpp
@@ -69,17 +69,17 @@ Result<FileStatus> FileHandle::GetStatus() const
 void FileSystem::Init()
 {
   if (Delete(0, 0, "/tmp") == ResultCode::Success)
-    CreateDirectory(0, 0, "/tmp", 0, Mode::ReadWrite, Mode::ReadWrite, Mode::ReadWrite);
+    CreateDirectory(0, 0, "/tmp", 0, {Mode::ReadWrite, Mode::ReadWrite, Mode::ReadWrite});
 }
 
 Result<FileHandle> FileSystem::CreateAndOpenFile(Uid uid, Gid gid, const std::string& path,
-                                                 Mode owner_mode, Mode group_mode, Mode other_mode)
+                                                 Modes modes)
 {
   Result<FileHandle> file = OpenFile(uid, gid, path, Mode::ReadWrite);
   if (file.Succeeded())
     return file;
 
-  const ResultCode result = CreateFile(uid, gid, path, 0, owner_mode, group_mode, other_mode);
+  const ResultCode result = CreateFile(uid, gid, path, 0, modes);
   if (result != ResultCode::Success)
     return result;
 
@@ -87,7 +87,7 @@ Result<FileHandle> FileSystem::CreateAndOpenFile(Uid uid, Gid gid, const std::st
 }
 
 ResultCode FileSystem::CreateFullPath(Uid uid, Gid gid, const std::string& path,
-                                      FileAttribute attribute, Mode owner, Mode group, Mode other)
+                                      FileAttribute attribute, Modes modes)
 {
   std::string::size_type position = 1;
   while (true)
@@ -103,7 +103,7 @@ ResultCode FileSystem::CreateFullPath(Uid uid, Gid gid, const std::string& path,
     if (metadata && metadata->is_file)
       return ResultCode::Invalid;
 
-    const ResultCode result = CreateDirectory(uid, gid, subpath, attribute, owner, group, other);
+    const ResultCode result = CreateDirectory(uid, gid, subpath, attribute, modes);
     if (result != ResultCode::Success && result != ResultCode::AlreadyExists)
       return result;
 
diff --git a/Source/Core/Core/IOS/FS/FileSystem.h b/Source/Core/Core/IOS/FS/FileSystem.h
index b3701c0f1e66..2379ebe80bb3 100644
--- a/Source/Core/Core/IOS/FS/FileSystem.h
+++ b/Source/Core/Core/IOS/FS/FileSystem.h
@@ -67,12 +67,17 @@ enum class SeekMode : u32
 
 using FileAttribute = u8;
 
+struct Modes
+{
+  Mode owner, group, other;
+};
+
 struct Metadata
 {
   Uid uid;
   Gid gid;
   FileAttribute attribute;
-  Mode owner_mode, group_mode, other_mode;
+  Modes modes;
   bool is_file;
   u32 size;
   u16 fst_index;
@@ -142,8 +147,7 @@ class FileSystem
   /// Get a file descriptor for accessing a file. The FD will be automatically closed after use.
   virtual Result<FileHandle> OpenFile(Uid uid, Gid gid, const std::string& path, Mode mode) = 0;
   /// Create a file if it doesn't exist and open it in read/write mode.
-  Result<FileHandle> CreateAndOpenFile(Uid uid, Gid gid, const std::string& path, Mode owner_mode,
-                                       Mode group_mode, Mode other_mode);
+  Result<FileHandle> CreateAndOpenFile(Uid uid, Gid gid, const std::string& path, Modes modes);
   /// Close a file descriptor.
   virtual ResultCode Close(Fd fd) = 0;
   /// Read `size` bytes from the file descriptor. Returns the number of bytes read.
@@ -157,17 +161,15 @@ class FileSystem
 
   /// Create a file with the specified path and metadata.
   virtual ResultCode CreateFile(Uid caller_uid, Gid caller_gid, const std::string& path,
-                                FileAttribute attribute, Mode owner_mode, Mode group_mode,
-                                Mode other_mode) = 0;
+                                FileAttribute attribute, Modes modes) = 0;
   /// Create a directory with the specified path and metadata.
   virtual ResultCode CreateDirectory(Uid caller_uid, Gid caller_gid, const std::string& path,
-                                     FileAttribute attribute, Mode owner_mode, Mode group_mode,
-                                     Mode other_mode) = 0;
+                                     FileAttribute attribute, Modes modes) = 0;
 
   /// Create any parent directories for a path with the specified metadata.
   /// Example: "/a/b" to create directory /a; "/a/b/" to create directories /a and /a/b
   ResultCode CreateFullPath(Uid caller_uid, Gid caller_gid, const std::string& path,
-                            FileAttribute attribute, Mode ownerm, Mode group, Mode other);
+                            FileAttribute attribute, Modes modes);
 
   /// Delete a file or directory with the specified path.
   virtual ResultCode Delete(Uid caller_uid, Gid caller_gid, const std::string& path) = 0;
@@ -183,8 +185,7 @@ class FileSystem
   virtual Result<Metadata> GetMetadata(Uid caller_uid, Gid caller_gid, const std::string& path) = 0;
   /// Set metadata for a file.
   virtual ResultCode SetMetadata(Uid caller_uid, const std::string& path, Uid uid, Gid gid,
-                                 FileAttribute attribute, Mode owner_mode, Mode group_mode,
-                                 Mode other_mode) = 0;
+                                 FileAttribute attribute, Modes modes) = 0;
 
   /// Get usage information about the NAND (block size, cluster and inode counts).
   virtual Result<NandStats> GetNandStats() = 0;
diff --git a/Source/Core/Core/IOS/FS/FileSystemProxy.cpp b/Source/Core/Core/IOS/FS/FileSystemProxy.cpp
index 2fbcee679414..e0b73989770b 100644
--- a/Source/Core/Core/IOS/FS/FileSystemProxy.cpp
+++ b/Source/Core/Core/IOS/FS/FileSystemProxy.cpp
@@ -282,9 +282,7 @@ struct ISFSParams
   Common::BigEndianValue<Uid> uid;
   Common::BigEndianValue<Gid> gid;
   char path[64];
-  Mode owner_mode;
-  Mode group_mode;
-  Mode other_mode;
+  Modes modes;
   FileAttribute attribute;
 };
 
@@ -406,9 +404,8 @@ IPCCommandResult FS::CreateDirectory(const Handle& handle, const IOCtlRequest& r
   if (!params)
     return GetFSReply(ConvertResult(params.Error()));
 
-  const ResultCode result =
-      m_ios.GetFS()->CreateDirectory(handle.uid, handle.gid, params->path, params->attribute,
-                                     params->owner_mode, params->group_mode, params->other_mode);
+  const ResultCode result = m_ios.GetFS()->CreateDirectory(handle.uid, handle.gid, params->path,
+                                                           params->attribute, params->modes);
   LogResult(StringFromFormat("CreateDirectory(%s)", params->path), result);
   return GetReplyForSuperblockOperation(result);
 }
@@ -474,8 +471,7 @@ IPCCommandResult FS::SetAttribute(const Handle& handle, const IOCtlRequest& requ
     return GetFSReply(ConvertResult(params.Error()));
 
   const ResultCode result = m_ios.GetFS()->SetMetadata(
-      handle.uid, params->path, params->uid, params->gid, params->attribute, params->owner_mode,
-      params->group_mode, params->other_mode);
+      handle.uid, params->path, params->uid, params->gid, params->attribute, params->modes);
   LogResult(StringFromFormat("SetMetadata(%s)", params->path), result);
   return GetReplyForSuperblockOperation(result);
 }
@@ -499,9 +495,7 @@ IPCCommandResult FS::GetAttribute(const Handle& handle, const IOCtlRequest& requ
   out.uid = metadata->uid;
   out.gid = metadata->gid;
   out.attribute = metadata->attribute;
-  out.owner_mode = metadata->owner_mode;
-  out.group_mode = metadata->group_mode;
-  out.other_mode = metadata->other_mode;
+  out.modes = metadata->modes;
   Memory::CopyToEmu(request.buffer_out, &out, sizeof(out));
   return GetFSReply(IPC_SUCCESS, ticks);
 }
@@ -535,9 +529,8 @@ IPCCommandResult FS::CreateFile(const Handle& handle, const IOCtlRequest& reques
   if (!params)
     return GetFSReply(ConvertResult(params.Error()));
 
-  const ResultCode result =
-      m_ios.GetFS()->CreateFile(handle.uid, handle.gid, params->path, params->attribute,
-                                params->owner_mode, params->group_mode, params->other_mode);
+  const ResultCode result = m_ios.GetFS()->CreateFile(handle.uid, handle.gid, params->path,
+                                                      params->attribute, params->modes);
   LogResult(StringFromFormat("CreateFile(%s)", params->path), result);
   return GetReplyForSuperblockOperation(result);
 }
diff --git a/Source/Core/Core/IOS/FS/HostBackend/FS.cpp b/Source/Core/Core/IOS/FS/HostBackend/FS.cpp
index 19479bf318e5..9f7b6a811b74 100644
--- a/Source/Core/Core/IOS/FS/HostBackend/FS.cpp
+++ b/Source/Core/Core/IOS/FS/HostBackend/FS.cpp
@@ -167,8 +167,7 @@ ResultCode HostFileSystem::Format(Uid uid)
   return ResultCode::Success;
 }
 
-ResultCode HostFileSystem::CreateFile(Uid, Gid, const std::string& path, FileAttribute attribute,
-                                      Mode owner_mode, Mode group_mode, Mode other_mode)
+ResultCode HostFileSystem::CreateFile(Uid, Gid, const std::string& path, FileAttribute, Modes)
 {
   std::string file_name(BuildFilename(path));
   // check if the file already exist
@@ -186,9 +185,7 @@ ResultCode HostFileSystem::CreateFile(Uid, Gid, const std::string& path, FileAtt
   return ResultCode::Success;
 }
 
-ResultCode HostFileSystem::CreateDirectory(Uid, Gid, const std::string& path,
-                                           FileAttribute attribute, Mode owner_mode,
-                                           Mode group_mode, Mode other_mode)
+ResultCode HostFileSystem::CreateDirectory(Uid, Gid, const std::string& path, FileAttribute, Modes)
 {
   if (!IsValidWiiPath(path))
     return ResultCode::Invalid;
@@ -310,9 +307,7 @@ Result<Metadata> HostFileSystem::GetMetadata(Uid, Gid, const std::string& path)
     return ResultCode::Invalid;
 
   std::string file_name = BuildFilename(path);
-  metadata.owner_mode = Mode::ReadWrite;
-  metadata.group_mode = Mode::ReadWrite;
-  metadata.other_mode = Mode::ReadWrite;
+  metadata.modes = {Mode::ReadWrite, Mode::ReadWrite, Mode::ReadWrite};
   metadata.attribute = 0x00;  // no attributes
 
   // Hack: if the path that is being accessed is within an installed title directory, get the
@@ -335,8 +330,7 @@ Result<Metadata> HostFileSystem::GetMetadata(Uid, Gid, const std::string& path)
 }
 
 ResultCode HostFileSystem::SetMetadata(Uid caller_uid, const std::string& path, Uid uid, Gid gid,
-                                       FileAttribute attribute, Mode owner_mode, Mode group_mode,
-                                       Mode other_mode)
+                                       FileAttribute, Modes)
 {
   if (!IsValidWiiPath(path))
     return ResultCode::Invalid;
diff --git a/Source/Core/Core/IOS/FS/HostBackend/FS.h b/Source/Core/Core/IOS/FS/HostBackend/FS.h
index 162a0f8320a7..8e3a683887c7 100644
--- a/Source/Core/Core/IOS/FS/HostBackend/FS.h
+++ b/Source/Core/Core/IOS/FS/HostBackend/FS.h
@@ -38,12 +38,10 @@ class HostFileSystem final : public FileSystem
   Result<FileStatus> GetFileStatus(Fd fd) override;
 
   ResultCode CreateFile(Uid caller_uid, Gid caller_gid, const std::string& path,
-                        FileAttribute attribute, Mode owner_mode, Mode group_mode,
-                        Mode other_mode) override;
+                        FileAttribute attribute, Modes modes) override;
 
   ResultCode CreateDirectory(Uid caller_uid, Gid caller_gid, const std::string& path,
-                             FileAttribute attribute, Mode owner_mode, Mode group_mode,
-                             Mode other_mode) override;
+                             FileAttribute attribute, Modes modes) override;
 
   ResultCode Delete(Uid caller_uid, Gid caller_gid, const std::string& path) override;
   ResultCode Rename(Uid caller_uid, Gid caller_gid, const std::string& old_path,
@@ -54,8 +52,7 @@ class HostFileSystem final : public FileSystem
 
   Result<Metadata> GetMetadata(Uid caller_uid, Gid caller_gid, const std::string& path) override;
   ResultCode SetMetadata(Uid caller_uid, const std::string& path, Uid uid, Gid gid,
-                         FileAttribute attribute, Mode owner_mode, Mode group_mode,
-                         Mode other_mode) override;
+                         FileAttribute attribute, Modes modes) override;
 
   Result<NandStats> GetNandStats() override;
   Result<DirectoryStats> GetDirectoryStats(const std::string& path) override;
diff --git a/Source/Core/Core/IOS/Network/KD/NWC24Config.cpp b/Source/Core/Core/IOS/Network/KD/NWC24Config.cpp
index 3f12af05b6ca..da6a9237572b 100644
--- a/Source/Core/Core/IOS/Network/KD/NWC24Config.cpp
+++ b/Source/Core/Core/IOS/Network/KD/NWC24Config.cpp
@@ -44,9 +44,9 @@ void NWC24Config::ReadConfig()
 
 void NWC24Config::WriteConfig() const
 {
-  constexpr FS::Mode rw_mode = FS::Mode::ReadWrite;
-  m_fs->CreateFullPath(PID_KD, PID_KD, CONFIG_PATH, 0, rw_mode, rw_mode, rw_mode);
-  const auto file = m_fs->CreateAndOpenFile(PID_KD, PID_KD, CONFIG_PATH, rw_mode, rw_mode, rw_mode);
+  constexpr FS::Modes public_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::ReadWrite};
+  m_fs->CreateFullPath(PID_KD, PID_KD, CONFIG_PATH, 0, public_modes);
+  const auto file = m_fs->CreateAndOpenFile(PID_KD, PID_KD, CONFIG_PATH, public_modes);
   if (!file || !file->Write(&m_data, 1))
     ERROR_LOG(IOS_WC24, "Failed to open or write WC24 config file");
 }
diff --git a/Source/Core/Core/IOS/Network/NCD/WiiNetConfig.cpp b/Source/Core/Core/IOS/Network/NCD/WiiNetConfig.cpp
index 4438a9daa14c..75443b7e3cb4 100644
--- a/Source/Core/Core/IOS/Network/NCD/WiiNetConfig.cpp
+++ b/Source/Core/Core/IOS/Network/NCD/WiiNetConfig.cpp
@@ -36,10 +36,9 @@ void WiiNetConfig::ReadConfig(FS::FileSystem* fs)
 
 void WiiNetConfig::WriteConfig(FS::FileSystem* fs) const
 {
-  fs->CreateFullPath(PID_NCD, PID_NCD, CONFIG_PATH, 0, FS::Mode::ReadWrite, FS::Mode::ReadWrite,
-                     FS::Mode::ReadWrite);
-  const auto file = fs->CreateAndOpenFile(PID_NCD, PID_NCD, CONFIG_PATH, FS::Mode::ReadWrite,
-                                          FS::Mode::ReadWrite, FS::Mode::ReadWrite);
+  constexpr FS::Modes public_modes{FS::Mode::ReadWrite, FS::Mode::ReadWrite, FS::Mode::ReadWrite};
+  fs->CreateFullPath(PID_NCD, PID_NCD, CONFIG_PATH, 0, public_modes);
+  const auto file = fs->CreateAndOpenFile(PID_NCD, PID_NCD, CONFIG_PATH, public_modes);
   if (!file || !file->Write(&m_data, 1))
     ERROR_LOG(IOS_NET, "Failed to write config");
 }
diff --git a/Source/Core/Core/SysConf.cpp b/Source/Core/Core/SysConf.cpp
index b30774c0f625..530426c12996 100644
--- a/Source/Core/Core/SysConf.cpp
+++ b/Source/Core/Core/SysConf.cpp
@@ -199,13 +199,13 @@ bool SysConf::Save() const
   const std::string temp_file = "/tmp/SYSCONF";
   constexpr auto rw_mode = IOS::HLE::FS::Mode::ReadWrite;
   {
-    auto file = m_fs->CreateAndOpenFile(IOS::SYSMENU_UID, IOS::SYSMENU_GID, temp_file, rw_mode,
-                                        rw_mode, rw_mode);
+    auto file = m_fs->CreateAndOpenFile(IOS::SYSMENU_UID, IOS::SYSMENU_GID, temp_file,
+                                        {rw_mode, rw_mode, rw_mode});
     if (!file || !file->Write(buffer.data(), buffer.size()))
       return false;
   }
-  m_fs->CreateDirectory(IOS::SYSMENU_UID, IOS::SYSMENU_GID, "/shared2/sys", 0, rw_mode, rw_mode,
-                        rw_mode);
+  m_fs->CreateDirectory(IOS::SYSMENU_UID, IOS::SYSMENU_GID, "/shared2/sys", 0,
+                        {rw_mode, rw_mode, rw_mode});
   const auto result =
       m_fs->Rename(IOS::SYSMENU_UID, IOS::SYSMENU_GID, temp_file, "/shared2/sys/SYSCONF");
   return result == IOS::HLE::FS::ResultCode::Success;
diff --git a/Source/Core/Core/WiiRoot.cpp b/Source/Core/Core/WiiRoot.cpp
index 2f74f115808e..5266a9fed67b 100644
--- a/Source/Core/Core/WiiRoot.cpp
+++ b/Source/Core/Core/WiiRoot.cpp
@@ -96,12 +96,11 @@ static bool CopySysmenuFilesToFS(IOS::HLE::FS::FileSystem* fs, const std::string
     const std::string host_path = host_source_path + '/' + entry.virtualName;
     const std::string nand_path = nand_target_path + '/' + entry.virtualName;
     constexpr IOS::HLE::FS::Mode rw_mode = IOS::HLE::FS::Mode::ReadWrite;
+    constexpr IOS::HLE::FS::Modes public_modes{rw_mode, rw_mode, rw_mode};
 
     if (entry.isDirectory)
     {
-      fs->CreateDirectory(IOS::SYSMENU_UID, IOS::SYSMENU_GID, nand_path, 0, rw_mode, rw_mode,
-                          rw_mode);
-
+      fs->CreateDirectory(IOS::SYSMENU_UID, IOS::SYSMENU_GID, nand_path, 0, public_modes);
       if (!CopySysmenuFilesToFS(fs, host_path, nand_path))
         return false;
     }
@@ -116,8 +115,8 @@ static bool CopySysmenuFilesToFS(IOS::HLE::FS::FileSystem* fs, const std::string
       if (!host_file.ReadBytes(file_data.data(), file_data.size()))
         return false;
 
-      const auto nand_file = fs->CreateAndOpenFile(IOS::SYSMENU_UID, IOS::SYSMENU_GID, nand_path,
-                                                   rw_mode, rw_mode, rw_mode);
+      const auto nand_file =
+          fs->CreateAndOpenFile(IOS::SYSMENU_UID, IOS::SYSMENU_GID, nand_path, public_modes);
       if (!nand_file || !nand_file->Write(file_data.data(), file_data.size()))
         return false;
     }
diff --git a/Source/UnitTests/Core/IOS/FS/FileSystemTest.cpp b/Source/UnitTests/Core/IOS/FS/FileSystemTest.cpp
index 9964813a7dea..3a4f443139d9 100644
--- a/Source/UnitTests/Core/IOS/FS/FileSystemTest.cpp
+++ b/Source/UnitTests/Core/IOS/FS/FileSystemTest.cpp
@@ -16,6 +16,8 @@
 
 using namespace IOS::HLE::FS;
 
+constexpr Modes modes{Mode::ReadWrite, Mode::None, Mode::None};
+
 class FileSystemTest : public testing::Test
 {
 protected:
@@ -50,8 +52,7 @@ TEST_F(FileSystemTest, CreateFile)
 {
   const std::string PATH = "/tmp/f";
 
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, PATH, 0, Mode::Read, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, PATH, 0, modes), ResultCode::Success);
 
   const Result<Metadata> stats = m_fs->GetMetadata(Uid{0}, Gid{0}, PATH);
   ASSERT_TRUE(stats.Succeeded());
@@ -60,8 +61,7 @@ TEST_F(FileSystemTest, CreateFile)
   // TODO: After we start saving metadata correctly, check the UID, GID, permissions
   // as well (issue 10234).
 
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, PATH, 0, Mode::Read, Mode::None, Mode::None),
-            ResultCode::AlreadyExists);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, PATH, 0, modes), ResultCode::AlreadyExists);
 
   const Result<std::vector<std::string>> tmp_files = m_fs->ReadDirectory(Uid{0}, Gid{0}, "/tmp");
   ASSERT_TRUE(tmp_files.Succeeded());
@@ -72,8 +72,7 @@ TEST_F(FileSystemTest, CreateDirectory)
 {
   const std::string PATH = "/tmp/d";
 
-  ASSERT_EQ(m_fs->CreateDirectory(Uid{0}, Gid{0}, PATH, 0, Mode::Read, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateDirectory(Uid{0}, Gid{0}, PATH, 0, modes), ResultCode::Success);
 
   const Result<Metadata> stats = m_fs->GetMetadata(Uid{0}, Gid{0}, PATH);
   ASSERT_TRUE(stats.Succeeded());
@@ -112,15 +111,9 @@ TEST_F(FileSystemTest, RenameWithExistingTargetDirectory)
   // Test directory -> existing, non-empty directory.
   // IOS's FS sysmodule is not POSIX compliant and will remove the existing directory
   // if it exists, even when there are files in it.
-  ASSERT_EQ(
-      m_fs->CreateDirectory(Uid{0}, Gid{0}, "/tmp/d", 0, Mode::ReadWrite, Mode::None, Mode::None),
-      ResultCode::Success);
-  ASSERT_EQ(
-      m_fs->CreateDirectory(Uid{0}, Gid{0}, "/tmp/d2", 0, Mode::ReadWrite, Mode::None, Mode::None),
-      ResultCode::Success);
-  ASSERT_EQ(
-      m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/d2/file", 0, Mode::ReadWrite, Mode::None, Mode::None),
-      ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateDirectory(Uid{0}, Gid{0}, "/tmp/d", 0, modes), ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateDirectory(Uid{0}, Gid{0}, "/tmp/d2", 0, modes), ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/d2/file", 0, modes), ResultCode::Success);
   EXPECT_EQ(m_fs->Rename(Uid{0}, Gid{0}, "/tmp/d", "/tmp/d2"), ResultCode::Success);
 
   EXPECT_EQ(m_fs->ReadDirectory(Uid{0}, Gid{0}, "/tmp/d").Error(), ResultCode::NotFound);
@@ -132,8 +125,7 @@ TEST_F(FileSystemTest, RenameWithExistingTargetDirectory)
 TEST_F(FileSystemTest, RenameWithExistingTargetFile)
 {
   // Create the test source file and write some data (so that we can check its size later on).
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f1", 0, Mode::ReadWrite, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f1", 0, modes), ResultCode::Success);
   const std::vector<u8> TEST_DATA{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}};
   std::vector<u8> read_buffer(TEST_DATA.size());
   {
@@ -143,8 +135,7 @@ TEST_F(FileSystemTest, RenameWithExistingTargetFile)
   }
 
   // Create the test target file and leave it empty.
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f2", 0, Mode::ReadWrite, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f2", 0, modes), ResultCode::Success);
 
   // Rename f1 to f2 and check that f1 replaced f2.
   EXPECT_EQ(m_fs->Rename(Uid{0}, Gid{0}, "/tmp/f1", "/tmp/f2"), ResultCode::Success);
@@ -169,8 +160,7 @@ TEST_F(FileSystemTest, GetDirectoryStats)
 
   check_stats(0u, 1u);
 
-  EXPECT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/file", 0, Mode::Read, Mode::None, Mode::None),
-            ResultCode::Success);
+  EXPECT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/file", 0, modes), ResultCode::Success);
   // Still no clusters (because the file is empty), but 2 inodes now.
   check_stats(0u, 2u);
 
@@ -204,8 +194,7 @@ TEST_F(FileSystemTest, Seek)
 {
   const std::vector<u8> TEST_DATA(10);
 
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, Mode::ReadWrite, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, modes), ResultCode::Success);
 
   const Result<FileHandle> file = m_fs->OpenFile(Uid{0}, Gid{0}, "/tmp/f", Mode::ReadWrite);
   ASSERT_TRUE(file.Succeeded());
@@ -244,8 +233,7 @@ TEST_F(FileSystemTest, WriteAndSimpleReadback)
   const std::vector<u8> TEST_DATA{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}};
   std::vector<u8> read_buffer(TEST_DATA.size());
 
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, Mode::ReadWrite, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, modes), ResultCode::Success);
 
   const Result<FileHandle> file = m_fs->OpenFile(Uid{0}, Gid{0}, "/tmp/f", Mode::ReadWrite);
   ASSERT_TRUE(file.Succeeded());
@@ -264,8 +252,7 @@ TEST_F(FileSystemTest, WriteAndRead)
   const std::vector<u8> TEST_DATA{{0xf, 1, 2, 3, 4, 5, 6, 7, 8, 9}};
   std::vector<u8> buffer(TEST_DATA.size());
 
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, Mode::ReadWrite, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, modes), ResultCode::Success);
 
   Result<FileHandle> tmp_handle = m_fs->OpenFile(Uid{0}, Gid{0}, "/tmp/f", Mode::ReadWrite);
   ASSERT_TRUE(tmp_handle.Succeeded());
@@ -298,8 +285,7 @@ TEST_F(FileSystemTest, WriteAndRead)
 
 TEST_F(FileSystemTest, MultipleHandles)
 {
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, Mode::ReadWrite, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, modes), ResultCode::Success);
 
   {
     const Result<FileHandle> file = m_fs->OpenFile(Uid{0}, Gid{0}, "/tmp/f", Mode::ReadWrite);
@@ -333,8 +319,7 @@ TEST_F(FileSystemTest, MultipleHandles)
 // If it is not a file, ResultCode::Invalid must be returned.
 TEST_F(FileSystemTest, ReadDirectoryOnFile)
 {
-  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, Mode::Read, Mode::None, Mode::None),
-            ResultCode::Success);
+  ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f", 0, modes), ResultCode::Success);
 
   const Result<std::vector<std::string>> result = m_fs->ReadDirectory(Uid{0}, Gid{0}, "/tmp/f");
   ASSERT_FALSE(result.Succeeded());