Fix reading not existing savedata (#2941)

* Fix reading not existing savedata

* alloc save memory instead return error

* save memory saze to save slot instead of global

* remove unused enum

* remove unneeded memory clean

CMakeLists.txt

@@ -409,6 +409,7 @@ set(SYSTEM_LIBS src/core/libraries/system/commondialog.cpp
                 src/core/libraries/save_data/save_memory.h
                 src/core/libraries/save_data/savedata.cpp
                 src/core/libraries/save_data/savedata.h
+                src/core/libraries/save_data/savedata_error.h
                 src/core/libraries/save_data/dialog/savedatadialog.cpp
                 src/core/libraries/save_data/dialog/savedatadialog.h
                 src/core/libraries/save_data/dialog/savedatadialog_ui.cpp

src/core/libraries/save_data/save_memory.cpp

@@ -10,15 +10,14 @@
 #include <utility>
 #include <fmt/format.h>
 
-#include <core/libraries/system/msgdialog_ui.h>
-
-#include "common/assert.h"
+#include "boost/icl/concept/interval.hpp"
 #include "common/elf_info.h"
 #include "common/logging/log.h"
 #include "common/path_util.h"
 #include "common/singleton.h"
 #include "common/thread.h"
 #include "core/file_sys/fs.h"
+#include "core/libraries/system/msgdialog_ui.h"
 #include "save_instance.h"
 
 using Common::FS::IOFile;
@@ -35,11 +34,12 @@ namespace Libraries::SaveData::SaveMemory {
 static Core::FileSys::MntPoints* g_mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
 
 struct SlotData {
-    OrbisUserServiceUserId user_id;
+    OrbisUserServiceUserId user_id{};
     std::string game_serial;
     std::filesystem::path folder_path;
     PSF sfo;
     std::vector<u8> memory_cache;
+    size_t memory_cache_size{};
 };
 
 static std::mutex g_slot_mtx;
@@ -97,7 +97,8 @@ std::filesystem::path GetSavePath(OrbisUserServiceUserId user_id, u32 slot_id,
     return SaveInstance::MakeDirSavePath(user_id, Common::ElfInfo::Instance().GameSerial(), dir);
 }
 
-size_t SetupSaveMemory(OrbisUserServiceUserId user_id, u32 slot_id, std::string_view game_serial) {
+size_t SetupSaveMemory(OrbisUserServiceUserId user_id, u32 slot_id, std::string_view game_serial,
+                       size_t memory_size) {
     std::lock_guard lck{g_slot_mtx};
 
     const auto save_dir = GetSavePath(user_id, slot_id, game_serial);
@@ -109,6 +110,7 @@ size_t SetupSaveMemory(OrbisUserServiceUserId user_id, u32 slot_id, std::string_
         .folder_path = save_dir,
         .sfo = {},
         .memory_cache = {},
+        .memory_cache_size = memory_size,
     };
 
     SaveInstance::SetupDefaultParamSFO(data.sfo, GetSaveDir(slot_id), std::string{game_serial});
@@ -196,9 +198,9 @@ void ReadMemory(u32 slot_id, void* buf, size_t buf_size, int64_t offset) {
     auto& data = g_attached_slots[slot_id];
     auto& memory = data.memory_cache;
     if (memory.empty()) { // Load file
+        memory.resize(data.memory_cache_size);
         IOFile f{data.folder_path / FilenameSaveDataMemory, Common::FS::FileAccessMode::Read};
         if (f.IsOpen()) {
-            memory.resize(f.GetSize());
             f.Seek(0);
             f.ReadSpan(std::span{memory});
         }
@@ -222,5 +224,4 @@ void WriteMemory(u32 slot_id, void* buf, size_t buf_size, int64_t offset) {
     Backup::NewRequest(data.user_id, data.game_serial, GetSaveDir(slot_id),
                        Backup::OrbisSaveDataEventType::__DO_NOT_SAVE);
 }
-
 } // namespace Libraries::SaveData::SaveMemory

src/core/libraries/save_data/save_memory.h

@@ -4,13 +4,13 @@
 #pragma once
 
 #include <vector>
-#include "save_backup.h"
+#include "core/libraries/save_data/save_backup.h"
 
 class PSF;
 
 namespace Libraries::SaveData {
 using OrbisUserServiceUserId = s32;
-}
+} // namespace Libraries::SaveData
 
 namespace Libraries::SaveData::SaveMemory {
 
@@ -22,7 +22,8 @@ void PersistMemory(u32 slot_id, bool lock = true);
                                                 std::string_view game_serial);
 
 // returns the size of the save memory if exists
-size_t SetupSaveMemory(OrbisUserServiceUserId user_id, u32 slot_id, std::string_view game_serial);
+size_t SetupSaveMemory(OrbisUserServiceUserId user_id, u32 slot_id, std::string_view game_serial,
+                       size_t memory_size);
 
 // Write the icon. Set buf to null to read the standard icon.
 void SetIcon(u32 slot_id, void* buf = nullptr, size_t buf_size = 0);

src/core/libraries/save_data/savedata.cpp

@@ -5,7 +5,6 @@
 #include <thread>
 #include <vector>
 
-#include <core/libraries/system/msgdialog_ui.h>
 #include <magic_enum/magic_enum.hpp>
 
 #include "common/assert.h"
@@ -20,7 +19,9 @@
 #include "core/libraries/error_codes.h"
 #include "core/libraries/libs.h"
 #include "core/libraries/save_data/savedata.h"
+#include "core/libraries/save_data/savedata_error.h"
 #include "core/libraries/system/msgdialog.h"
+#include "core/libraries/system/msgdialog_ui.h"
 #include "save_backup.h"
 #include "save_instance.h"
 #include "save_memory.h"
@@ -33,27 +34,6 @@ using Common::ElfInfo;
 
 namespace Libraries::SaveData {
 
-enum class Error : u32 {
-    OK = 0,
-    USER_SERVICE_NOT_INITIALIZED = 0x80960002,
-    PARAMETER = 0x809F0000,
-    NOT_INITIALIZED = 0x809F0001,
-    OUT_OF_MEMORY = 0x809F0002,
-    BUSY = 0x809F0003,
-    NOT_MOUNTED = 0x809F0004,
-    EXISTS = 0x809F0007,
-    NOT_FOUND = 0x809F0008,
-    NO_SPACE_FS = 0x809F000A,
-    INTERNAL = 0x809F000B,
-    MOUNT_FULL = 0x809F000C,
-    BAD_MOUNTED = 0x809F000D,
-    BROKEN = 0x809F000F,
-    INVALID_LOGIN_USER = 0x809F0011,
-    MEMORY_NOT_READY = 0x809F0012,
-    BACKUP_BUSY = 0x809F0013,
-    BUSY_FOR_SAVING = 0x809F0016,
-};
-
 enum class OrbisSaveDataSaveDataMemoryOption : u32 {
     NONE = 0,
     SET_PARAM = 1 << 0,
@@ -1593,8 +1573,8 @@ Error PS4_SYSV_ABI sceSaveDataSetupSaveDataMemory2(const OrbisSaveDataMemorySetu
     }
 
     try {
-        size_t existed_size =
-            SaveMemory::SetupSaveMemory(setupParam->userId, slot_id, g_game_serial);
+        size_t existed_size = SaveMemory::SetupSaveMemory(setupParam->userId, slot_id,
+                                                          g_game_serial, setupParam->memorySize);
         if (existed_size == 0) { // Just created
             if (g_fw_ver >= ElfInfo::FW_45 && setupParam->initParam != nullptr) {
                 auto& sfo = SaveMemory::GetParamSFO(slot_id);

src/core/libraries/save_data/savedata_error.h

@@ -0,0 +1,27 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+namespace Libraries::SaveData {
+enum class Error : u32 {
+    OK = 0,
+    USER_SERVICE_NOT_INITIALIZED = 0x80960002,
+    PARAMETER = 0x809F0000,
+    NOT_INITIALIZED = 0x809F0001,
+    OUT_OF_MEMORY = 0x809F0002,
+    BUSY = 0x809F0003,
+    NOT_MOUNTED = 0x809F0004,
+    EXISTS = 0x809F0007,
+    NOT_FOUND = 0x809F0008,
+    NO_SPACE_FS = 0x809F000A,
+    INTERNAL = 0x809F000B,
+    MOUNT_FULL = 0x809F000C,
+    BAD_MOUNTED = 0x809F000D,
+    BROKEN = 0x809F000F,
+    INVALID_LOGIN_USER = 0x809F0011,
+    MEMORY_NOT_READY = 0x809F0012,
+    BACKUP_BUSY = 0x809F0013,
+    BUSY_FOR_SAVING = 0x809F0016,
+};
+} // namespace Libraries::SaveData