SaveData: Implemented the SystemSaveData archive.

It will be stored in the /syssavedata folder. This archive is user by various Services and possibly games via the FS:U service.

src/common/common_paths.h

@@ -42,6 +42,7 @@
 #define SDMC_DIR          "sdmc"
 #define SAVEDATA_DIR      "savedata"
 #define SYSDATA_DIR       "sysdata"
+#define SYSSAVEDATA_DIR   "syssavedata"
 #define SHADERCACHE_DIR   "shader_cache"
 #define STATESAVES_DIR    "state_saves"
 #define SCREENSHOTS_DIR   "screenShots"

src/common/file_util.cpp

@@ -678,6 +678,7 @@ const std::string& GetUserPath(const unsigned int DirIDX, const std::string &new
         paths[D_SDMC_IDX]           = paths[D_USER_IDX] + SDMC_DIR DIR_SEP;
         paths[D_SAVEDATA_IDX]       = paths[D_USER_IDX] + SAVEDATA_DIR DIR_SEP;
         paths[D_SYSDATA_IDX]        = paths[D_USER_IDX] + SYSDATA_DIR DIR_SEP;
+        paths[D_SYSSAVEDATA_IDX]    = paths[D_USER_IDX] + SYSSAVEDATA_DIR DIR_SEP;
         paths[D_SHADERCACHE_IDX]    = paths[D_USER_IDX] + SHADERCACHE_DIR DIR_SEP;
         paths[D_SHADERS_IDX]        = paths[D_USER_IDX] + SHADERS_DIR DIR_SEP;
         paths[D_STATESAVES_IDX]     = paths[D_USER_IDX] + STATESAVES_DIR DIR_SEP;
@@ -720,6 +721,7 @@ const std::string& GetUserPath(const unsigned int DirIDX, const std::string &new
             paths[D_CACHE_IDX]          = paths[D_USER_IDX] + CACHE_DIR DIR_SEP;
             paths[D_SDMC_IDX]           = paths[D_USER_IDX] + SDMC_DIR DIR_SEP;
             paths[D_SAVEDATA_IDX]       = paths[D_USER_IDX] + SAVEDATA_DIR DIR_SEP;
+            paths[D_SYSSAVEDATA_IDX]    = paths[D_USER_IDX] + SYSSAVEDATA_DIR DIR_SEP;
             paths[D_SHADERCACHE_IDX]    = paths[D_USER_IDX] + SHADERCACHE_DIR DIR_SEP;
             paths[D_SHADERS_IDX]        = paths[D_USER_IDX] + SHADERS_DIR DIR_SEP;
             paths[D_STATESAVES_IDX]     = paths[D_USER_IDX] + STATESAVES_DIR DIR_SEP;

src/common/file_util.h

@@ -29,6 +29,7 @@ enum {
     D_SDMC_IDX,
     D_SAVEDATA_IDX,
     D_SYSDATA_IDX,
+    D_SYSSAVEDATA_IDX,
     D_HIRESTEXTURES_IDX,
     D_DUMP_IDX,
     D_DUMPFRAMES_IDX,

src/core/CMakeLists.txt

@@ -20,6 +20,7 @@ set(SRCS
             file_sys/archive_romfs.cpp
             file_sys/archive_savedata.cpp
             file_sys/archive_sdmc.cpp
+            file_sys/archive_systemsavedata.cpp
             file_sys/disk_archive.cpp
             file_sys/file_romfs.cpp
             file_sys/directory_romfs.cpp
@@ -101,6 +102,7 @@ set(HEADERS
             file_sys/archive_romfs.h
             file_sys/archive_savedata.h
             file_sys/archive_sdmc.h
+            file_sys/archive_systemsavedata.h
             file_sys/disk_archive.h
             file_sys/file_backend.h
             file_sys/file_romfs.h

src/core/file_sys/archive_savedata.h

@@ -21,8 +21,7 @@ public:
 
     /**
      * Initialize the archive.
-     * @return CreateSaveDataResult AlreadyExists if the SaveData folder already exists,
-     * Success if it was created properly and Failure if there was any error
+     * @return true if it initialized successfully
      */
     bool Initialize();
 

src/core/file_sys/archive_systemsavedata.cpp

@@ -0,0 +1,33 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <sys/stat.h>
+
+#include "common/common_types.h"
+#include "common/file_util.h"
+
+#include "core/file_sys/archive_systemsavedata.h"
+#include "core/file_sys/disk_archive.h"
+#include "core/settings.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// FileSys namespace
+
+namespace FileSys {
+
+Archive_SystemSaveData::Archive_SystemSaveData(const std::string& mount_point)
+        : DiskArchive(mount_point) {
+    LOG_INFO(Service_FS, "Directory %s set as SystemSaveData.", this->mount_point.c_str());
+}
+
+bool Archive_SystemSaveData::Initialize() {
+    if (!FileUtil::CreateFullPath(mount_point)) {
+        LOG_ERROR(Service_FS, "Unable to create SystemSaveData path.");
+        return false;
+    }
+
+    return true;
+}
+
+} // namespace FileSys

src/core/file_sys/archive_systemsavedata.h

@@ -0,0 +1,31 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+
+#include "core/file_sys/disk_archive.h"
+#include "core/loader/loader.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// FileSys namespace
+
+namespace FileSys {
+
+/// File system interface to the SaveData archive
+class Archive_SystemSaveData final : public DiskArchive {
+public:
+    Archive_SystemSaveData(const std::string& mount_point);
+
+    /**
+     * Initialize the archive.
+     * @return true if it initialized successfully
+     */
+    bool Initialize();
+
+    std::string GetName() const override { return "SystemSaveData"; }
+};
+
+} // namespace FileSys

src/core/hle/service/fs/archive.cpp

@@ -419,6 +419,15 @@ void ArchiveInit() {
         CreateArchive(std::move(sdmc_archive), ArchiveIdCode::SDMC);
     else
         LOG_ERROR(Service_FS, "Can't instantiate SDMC archive with path %s", sdmc_directory.c_str());
+
+    std::string systemsavedata_directory = FileUtil::GetUserPath(D_SYSSAVEDATA_IDX);
+    auto systemsavedata_archive = std::make_unique<FileSys::Archive_SDMC>(systemsavedata_directory);
+    if (systemsavedata_archive->Initialize()) {
+        CreateArchive(std::move(sdmc_archive), ArchiveIdCode::SystemSaveData);
+    } else {
+        LOG_ERROR(Service_FS, "Can't instantiate SystemSaveData archive with path %s",
+            systemsavedata_directory.c_str());
+    }
 }
 
 /// Shutdown archives