Added:

- sceSaveDataMount
- Create2 mode (50)
- slight change in error handling (testing for now)
- log to print message when fd = 1 in sceKernelWrite (to avoid crash and move forward, not a file)
- mount savedata at emu start for CUSA00402 - Crimsonland (only case, needs testing)
- sceSaveDataGetMountInfo

- scePthreadGetthreadid
- posix_getpid
- posix_pthread_attr_setdetachstate
- posix_pthread_attr_destroy
- posix_pthread_detach
- scePthreadSetschedparam(partial)
- posix_pthread_setschedparam (partial)
- posix_sched_get_priority_max

src/core/libraries/kernel/file_system.cpp

@@ -82,6 +82,15 @@ size_t PS4_SYSV_ABI sceKernelWrite(int d, void* buf, size_t nbytes) {
     if (buf == nullptr) {
         return SCE_KERNEL_ERROR_EFAULT;
     }
+    if (d == 1) {
+        // temp, just to print the message. not a file?
+        // CUSA00402 - Crimsonland and probably other games.
+        char* msg = reinterpret_cast<char*>(buf);
+        size_t length = std::strlen(msg);
+        LOG_INFO(Kernel_Fs, "sceKernelWrite fd = 1, str = {}, length = {}", msg, length);
+        return length;
+    }
+
     auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
     auto* file = h->GetFile(d);
     if (file == nullptr) {
@@ -159,7 +168,12 @@ int PS4_SYSV_ABI sceKernelMkdir(const char* path, u16 mode) {
         return SCE_KERNEL_ERROR_EEXIST;
     }
 
-    if (!std::filesystem::create_directory(dir_name)) {
+    if (!std::filesystem::create_directories(dir_name)) {
+        // check me on saveDataMount.
+        // CUSA02456: calls sceSaveDataMount then mkdir
+        // CUSA00402: calls mkdir first before sceSaveDataMount
+        // maybe consider mounting save data at emu start? (added in main)
+
         return SCE_KERNEL_ERROR_EIO;
     }
 

src/core/libraries/kernel/libkernel.cpp

@@ -23,6 +23,7 @@
 #include <windows.h>
 #else
 #include <sys/mman.h>
+#include <unistd.h>
 #endif
 #include <core/file_format/psf.h>
 
@@ -217,6 +218,18 @@ int PS4_SYSV_ABI sceKernelGetCpumode() {
     return SCE_KERNEL_CPUMODE_7CPU_NORMAL;
 }
 
+int PS4_SYSV_ABI scePthreadGetthreadid() {
+#ifdef _WIN64
+    return GetCurrentProcessId();
+#else
+    return getpid();
+#endif
+}
+
+int PS4_SYSV_ABI posix_getpid() {
+    return scePthreadGetthreadid();
+}
+
 void LibKernel_Register(Core::Loader::SymbolsResolver* sym) {
     // obj
     LIB_OBJ("f7uOxY9mM1U", "libkernel", 1, "libkernel", 1, 1, &g_stack_chk_guard);
@@ -250,6 +263,8 @@ void LibKernel_Register(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("DRuBt2pvICk", "libkernel", 1, "libkernel", 1, 1, ps4__read);
     LIB_FUNCTION("k+AXqu2-eBc", "libScePosix", 1, "libkernel", 1, 1, posix_getpagesize);
     LIB_FUNCTION("VOx8NGmHXTs", "libkernel", 1, "libkernel", 1, 1, sceKernelGetCpumode);
+    LIB_FUNCTION("EI-5-jlq2dE", "libkernel", 1, "libkernel", 1, 1, scePthreadGetthreadid);
+    LIB_FUNCTION("HoLVWNanBBc", "libScePosix", 1, "libkernel", 1, 1, posix_getpid);
 
     Libraries::Kernel::fileSystemSymbolsRegister(sym);
     Libraries::Kernel::timeSymbolsRegister(sym);

src/core/libraries/kernel/thread_management.cpp

@@ -177,6 +177,22 @@ int PS4_SYSV_ABI scePthreadAttrSetdetachstate(ScePthreadAttr* attr, int detachst
     return result == 0 ? SCE_OK : SCE_KERNEL_ERROR_EINVAL;
 }
 
+int PS4_SYSV_ABI posix_pthread_attr_setdetachstate(ScePthreadAttr* attr, int detachstate) {
+    int result = scePthreadAttrSetdetachstate(attr, detachstate);
+    if (result < 0) {
+        UNREACHABLE();
+    }
+    return result;
+}
+
+int PS4_SYSV_ABI posix_pthread_attr_destroy(ScePthreadAttr* attr) {
+    int result = scePthreadAttrDestroy(attr);
+    if (result < 0) {
+        UNREACHABLE();
+    }
+    return result;
+}
+
 int PS4_SYSV_ABI scePthreadAttrSetinheritsched(ScePthreadAttr* attr, int inheritSched) {
     if (attr == nullptr || *attr == nullptr) {
         return SCE_KERNEL_ERROR_EINVAL;
@@ -899,7 +915,13 @@ void PS4_SYSV_ABI scePthreadYield() {
 }
 
 int PS4_SYSV_ABI scePthreadDetach(ScePthread thread) {
-    LOG_INFO(Kernel_Pthread, "thread create name = {}", thread->name);
+    LOG_INFO(Kernel_Pthread, "thread detach name = {}", thread->name);
+    thread->is_detached = true;
+    return ORBIS_OK;
+}
+
+int PS4_SYSV_ABI posix_pthread_detach(ScePthread thread) {
+    LOG_INFO(Kernel_Pthread, "thread detach name = {}", thread->name);
     thread->is_detached = true;
     return ORBIS_OK;
 }
@@ -965,6 +987,31 @@ int PS4_SYSV_ABI posix_pthread_setspecific(pthread_key_t key, void* ptr) {
     }
 }
 
+int PS4_SYSV_ABI scePthreadSetschedparam(ScePthread thread, int policy,
+                                         const SceKernelSchedParam* param) {
+    int ppolicy;
+    if (policy != SCHED_OTHER)
+        ppolicy = SCHED_OTHER;
+    int result = pthread_setschedparam(thread->pth, ppolicy, param);
+    // 0 only on win?
+    LOG_INFO(Kernel_Pthread, "Todo? scePthreadSetschedparam: policy = {}, result = {}", policy,
+             result);
+    return result;
+}
+
+int PS4_SYSV_ABI posix_pthread_setschedparam(ScePthread thread, int policy,
+                                             const SceKernelSchedParam* param) {
+    int result = scePthreadSetschedparam(thread, policy, param);
+    LOG_INFO(Kernel_Pthread, "Todo? posix_pthread_setschedparam: policy = {}, result = {}", policy,
+             result);
+    return result;
+}
+
+int PS4_SYSV_ABI posix_sched_get_priority_max(int algo) {
+    LOG_INFO(Kernel_Pthread, "posix_sched_get_priority_max: algo = {}", algo);
+    return SCE_KERNEL_PRIO_FIFO_HIGHEST;
+}
+
 int PS4_SYSV_ABI scePthreadCondSignal(ScePthreadCond* cond) {
     if (cond == nullptr) {
         return SCE_KERNEL_ERROR_EINVAL;
@@ -1381,6 +1428,9 @@ void pthreadSymbolsRegister(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("8+s5BzZjxSg", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrGetaffinity);
     LIB_FUNCTION("x1X76arYMxU", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrGet);
     LIB_FUNCTION("UTXzJbWhhTE", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrSetstacksize);
+    LIB_FUNCTION("E+tyo3lp5Lw", "libScePosix", 1, "libkernel", 1, 1,
+                 posix_pthread_attr_setdetachstate);
+    LIB_FUNCTION("zHchY8ft5pk", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_attr_destroy);
 
     LIB_FUNCTION("4qGrR6eoP9Y", "libkernel", 1, "libkernel", 1, 1, scePthreadDetach);
     LIB_FUNCTION("3PtV6p3QNX4", "libkernel", 1, "libkernel", 1, 1, scePthreadEqual);
@@ -1391,9 +1441,13 @@ void pthreadSymbolsRegister(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("6UgtwV+0zb4", "libkernel", 1, "libkernel", 1, 1, scePthreadCreate);
     LIB_FUNCTION("T72hz6ffq08", "libkernel", 1, "libkernel", 1, 1, scePthreadYield);
     LIB_FUNCTION("geDaqgH9lTg", "libkernel", 1, "libkernel", 1, 1, scePthreadKeyCreate);
+    LIB_FUNCTION("oIRFTjoILbg", "libkernel", 1, "libkernel", 1, 1, scePthreadSetschedparam);
     LIB_FUNCTION("mqULNdimTn0", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_key_create);
     LIB_FUNCTION("mqULNdimTn0", "libkernel", 1, "libkernel", 1, 1, posix_pthread_key_create);
     LIB_FUNCTION("WrOLvHU0yQM", "libkernel", 1, "libkernel", 1, 1, posix_pthread_setspecific);
+    LIB_FUNCTION("Xs9hdiD7sAA", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_setschedparam);
+    LIB_FUNCTION("CBNtXOoef-E", "libScePosix", 1, "libkernel", 1, 1, posix_sched_get_priority_max);
+    LIB_FUNCTION("+U1R4WtXvoc", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_detach);
 
     // mutex calls
     LIB_FUNCTION("cmo1RIYva9o", "libkernel", 1, "libkernel", 1, 1, scePthreadMutexInit);

src/core/libraries/kernel/thread_management.h

@@ -17,6 +17,13 @@ class SymbolsResolver;
 
 namespace Libraries::Kernel {
 
+/* sceKernelSchedGetPriorityMax/Min */
+constexpr int SCE_KERNEL_SCHED_FIFO = SCHED_FIFO;
+constexpr int SCE_KERNEL_SCHED_RR = SCHED_RR;
+constexpr int SCE_KERNEL_PRIO_FIFO_DEFAULT = 700;
+constexpr int SCE_KERNEL_PRIO_FIFO_HIGHEST = 256;
+constexpr int SCE_KERNEL_PRIO_FIFO_LOWEST = 767;
+
 struct PthreadInternal;
 struct PthreadAttrInternal;
 struct PthreadMutexInternal;

src/core/libraries/save_data/error_codes.h

@@ -4,5 +4,7 @@
 #pragma once
 
 constexpr int ORBIS_SAVE_DATA_ERROR_PARAMETER = 0x809f0000;
+constexpr int ORBIS_SAVE_DATA_ERROR_NOT_INITIALIZED =
+    0x809f0001;                                             // save data library not initialized yet
 constexpr int ORBIS_SAVE_DATA_ERROR_NOT_FOUND = 0x809f0008; // save data doesn't exist
 constexpr int ORBIS_SAVE_DATA_ERROR_EXISTS = 0x809f0007;    // save data directory,same name exists

src/core/libraries/save_data/savedata.cpp

@@ -13,7 +13,7 @@
 #include "error_codes.h"
 
 namespace Libraries::SaveData {
-
+static bool initialized = false;
 static std::string g_mount_point = "/savedata0"; // temp mount point (todo)
 
 int PS4_SYSV_ABI sceSaveDataAbort() {
@@ -241,8 +241,11 @@ int PS4_SYSV_ABI sceSaveDataGetMountedSaveDataCount() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceSaveDataGetMountInfo() {
+int PS4_SYSV_ABI sceSaveDataGetMountInfo(OrbisSaveDataMountPoint* mountPoint,
-    LOG_ERROR(Lib_SaveData, "(STUBBED) called");
+                                         OrbisSaveDataMountInfo* info) {
+    LOG_ERROR(Lib_SaveData, "(STUBBED) called, mount = {}", mountPoint->data);
+    info->blocks = 100000;
+    info->freeBlocks = 100000;
     return ORBIS_OK;
 }
 
@@ -296,17 +299,20 @@ int PS4_SYSV_ABI sceSaveDataGetUpdatedDataCount() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceSaveDataInitialize() {
+int PS4_SYSV_ABI sceSaveDataInitialize(const OrbisSaveDataInitParams* initParam) {
+    initialized = true; // todo.
     LOG_ERROR(Lib_SaveData, "(STUBBED) called");
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceSaveDataInitialize2() {
+int PS4_SYSV_ABI sceSaveDataInitialize2(const OrbisSaveDataInitParams* initParam) {
+    initialized = true; // todo.
     LOG_ERROR(Lib_SaveData, "(STUBBED) called");
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceSaveDataInitialize3() {
+int PS4_SYSV_ABI sceSaveDataInitialize3(const OrbisSaveDataInitParams* initParam) {
+    initialized = true; // todo.
     LOG_ERROR(Lib_SaveData, "(DUMMY) called");
     return ORBIS_OK;
 }
@@ -331,32 +337,25 @@ int PS4_SYSV_ABI sceSaveDataLoadIcon() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceSaveDataMount() {
+s32 saveDataMount(u32 user_id, std::string dir_name, u32 mount_mode,
-    LOG_ERROR(Lib_SaveData, "(STUBBED) called");
+                  OrbisSaveDataMountResult* mount_result) {
-    return ORBIS_OK;
-}
-
-s32 PS4_SYSV_ABI sceSaveDataMount2(const OrbisSaveDataMount2* mount,
-                                   OrbisSaveDataMountResult* mount_result) {
-    LOG_INFO(Lib_SaveData, "called user_id = {} dir_name = {} blocks = {} mount_mode = {}",
-             mount->user_id, mount->dir_name->data, mount->blocks, mount->mount_mode);
-
     auto* param_sfo = Common::Singleton<PSF>::Instance();
     std::string id(param_sfo->GetString("CONTENT_ID"), 7, 9);
     const auto& mount_dir = Common::FS::GetUserPath(Common::FS::PathType::SaveDataDir) /
-                            std::to_string(mount->user_id) / "savedata" / id /
+                            std::to_string(user_id) / "savedata" / id / dir_name;
-                            std::string(mount->dir_name->data);
+    switch (mount_mode) {
-    switch (mount->mount_mode) {
     case ORBIS_SAVE_DATA_MOUNT_MODE_RDONLY:
     case ORBIS_SAVE_DATA_MOUNT_MODE_RDWR: {
-        if (!std::filesystem::exists(mount_dir)) {
+        if (!initialized /* !std::filesystem::exists(mount_dir)*/) {
-            return ORBIS_SAVE_DATA_ERROR_NOT_FOUND;
+            // check this. example: CUSA02456
+            return ORBIS_SAVE_DATA_ERROR_NOT_INITIALIZED;
         }
         auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
         mnt->Mount(mount_dir, g_mount_point);
 
         mount_result->mount_status = 0;
         strncpy(mount_result->mount_point.data, g_mount_point.c_str(), 16);
+        LOG_ERROR(Lib_SaveData, "mount = {}", mount_result->mount_point.data);
     } break;
     case ORBIS_SAVE_DATA_MOUNT_MODE_CREATE | ORBIS_SAVE_DATA_MOUNT_MODE_RDWR:
     case ORBIS_SAVE_DATA_MOUNT_MODE_CREATE | ORBIS_SAVE_DATA_MOUNT_MODE_RDWR |
@@ -372,6 +371,18 @@ s32 PS4_SYSV_ABI sceSaveDataMount2(const OrbisSaveDataMount2* mount,
         mount_result->mount_status = 1;
         strncpy(mount_result->mount_point.data, g_mount_point.c_str(), 16);
     } break;
+    case ORBIS_SAVE_DATA_MOUNT_MODE_CREATE2 | ORBIS_SAVE_DATA_MOUNT_MODE_RDWR |
+        ORBIS_SAVE_DATA_MOUNT_MODE_COPY_ICON: {
+        if (!std::filesystem::exists(mount_dir)) {
+            std::filesystem::create_directories(mount_dir);
+        }
+
+        auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
+        mnt->Mount(mount_dir, g_mount_point);
+
+        mount_result->mount_status = 1;
+        strncpy(mount_result->mount_point.data, g_mount_point.c_str(), 16);
+    } break;
     default:
         UNREACHABLE();
     }
@@ -380,6 +391,28 @@ s32 PS4_SYSV_ABI sceSaveDataMount2(const OrbisSaveDataMount2* mount,
     return ORBIS_OK;
 }
 
+s32 PS4_SYSV_ABI sceSaveDataMount(const OrbisSaveDataMount* mount,
+                                  OrbisSaveDataMountResult* mount_result) {
+    if (mount == nullptr) {
+        return ORBIS_SAVE_DATA_ERROR_PARAMETER;
+    }
+    LOG_INFO(Lib_SaveData, "called: mount = {}, mode = {}, blocks = {}", mount->dir_name->data,
+             mount->mount_mode, mount->blocks);
+    return saveDataMount(mount->user_id, std::string(mount->dir_name->data), mount->mount_mode,
+                         mount_result);
+}
+
+s32 PS4_SYSV_ABI sceSaveDataMount2(const OrbisSaveDataMount2* mount,
+                                   OrbisSaveDataMountResult* mount_result) {
+    if (mount == nullptr) {
+        return ORBIS_SAVE_DATA_ERROR_PARAMETER;
+    }
+    LOG_INFO(Lib_SaveData, "called: mount = {}, mode = {}, blocks = {}", mount->dir_name->data,
+             mount->mount_mode, mount->blocks);
+    return saveDataMount(mount->user_id, std::string(mount->dir_name->data), mount->mount_mode,
+                         mount_result);
+}
+
 int PS4_SYSV_ABI sceSaveDataMount5() {
     LOG_ERROR(Lib_SaveData, "(STUBBED) called");
     return ORBIS_OK;

src/core/libraries/save_data/savedata.h

@@ -29,6 +29,30 @@ struct OrbisSaveDataMount2 {
     s32 unk2;
 };
 
+constexpr int SCE_SAVE_DATA_TITLE_ID_DATA_SIZE = 10;
+typedef struct OrbisSaveDataTitleId {
+    char data[SCE_SAVE_DATA_TITLE_ID_DATA_SIZE];
+    char padding[6];
+
+} OrbisSaveDataTitleId;
+
+constexpr int SCE_SAVE_DATA_FINGERPRINT_DATA_SIZE = 65;
+typedef struct OrbisSaveDataFingerprint {
+    char data[SCE_SAVE_DATA_FINGERPRINT_DATA_SIZE];
+    char padding[15];
+} OrbisSaveDataFingerprint;
+
+typedef struct OrbisSaveDataMount {
+    s32 user_id;
+    s32 pad;
+    const OrbisSaveDataTitleId* titleId;
+    const OrbisSaveDataDirName* dir_name;
+    const OrbisSaveDataFingerprint* fingerprint;
+    u64 blocks;
+    u32 mount_mode;
+    u8 reserved[32];
+} OrbisSaveDataMount;
+
 struct OrbisSaveDataMountPoint {
     char data[ORBIS_SAVE_DATA_MOUNT_POINT_DATA_MAXSIZE];
 };
@@ -42,6 +66,14 @@ struct OrbisSaveDataMountResult {
     s32 unk1;
 };
 
+typedef struct OrbisSaveDataMountInfo {
+    u64 blocks;     // total num of blocks
+    u64 freeBlocks; // free num of blocks
+    uint8_t reserved[32];
+} OrbisSaveDataMountInfo;
+
+typedef struct _OrbisSaveDataInitParams OrbisSaveDataInitParams;
+
 // savedataMount2 mountModes (ORed values)
 constexpr int ORBIS_SAVE_DATA_MOUNT_MODE_RDONLY = 1;
 constexpr int ORBIS_SAVE_DATA_MOUNT_MODE_RDWR = 2;
@@ -95,7 +127,8 @@ int PS4_SYSV_ABI sceSaveDataGetEventInfo();
 int PS4_SYSV_ABI sceSaveDataGetEventResult();
 int PS4_SYSV_ABI sceSaveDataGetFormat();
 int PS4_SYSV_ABI sceSaveDataGetMountedSaveDataCount();
-int PS4_SYSV_ABI sceSaveDataGetMountInfo();
+int PS4_SYSV_ABI sceSaveDataGetMountInfo(OrbisSaveDataMountPoint* mountPoint,
+                                         OrbisSaveDataMountInfo* info);
 int PS4_SYSV_ABI sceSaveDataGetParam();
 int PS4_SYSV_ABI sceSaveDataGetProgress();
 int PS4_SYSV_ABI sceSaveDataGetSaveDataCount();
@@ -106,14 +139,15 @@ int PS4_SYSV_ABI sceSaveDataGetSaveDataRootPath();
 int PS4_SYSV_ABI sceSaveDataGetSaveDataRootUsbPath();
 int PS4_SYSV_ABI sceSaveDataGetSavePoint();
 int PS4_SYSV_ABI sceSaveDataGetUpdatedDataCount();
-int PS4_SYSV_ABI sceSaveDataInitialize();
+int PS4_SYSV_ABI sceSaveDataInitialize(const OrbisSaveDataInitParams* initParam);
-int PS4_SYSV_ABI sceSaveDataInitialize2();
+int PS4_SYSV_ABI sceSaveDataInitialize2(const OrbisSaveDataInitParams* initParam);
-int PS4_SYSV_ABI sceSaveDataInitialize3();
+int PS4_SYSV_ABI sceSaveDataInitialize3(const OrbisSaveDataInitParams* initParam);
 int PS4_SYSV_ABI sceSaveDataInitializeForCdlg();
 int PS4_SYSV_ABI sceSaveDataIsDeletingUsbDb();
 int PS4_SYSV_ABI sceSaveDataIsMounted();
 int PS4_SYSV_ABI sceSaveDataLoadIcon();
-int PS4_SYSV_ABI sceSaveDataMount();
+int PS4_SYSV_ABI sceSaveDataMount(const OrbisSaveDataMount* mount,
+                                  OrbisSaveDataMountResult* mount_result);
 s32 PS4_SYSV_ABI sceSaveDataMount2(const OrbisSaveDataMount2* mount,
                                    OrbisSaveDataMountResult* mount_result);
 int PS4_SYSV_ABI sceSaveDataMount5();

src/main.cpp

@@ -63,6 +63,13 @@ int main(int argc, char* argv[]) {
                 u32 fw_version = param_sfo->GetInteger("SYSTEM_VER");
                 std::string app_version = param_sfo->GetString("APP_VER");
                 LOG_INFO(Loader, "Fw: {:#x} App Version: {}", fw_version, app_version);
+
+                // Just testing for now.
+                // Working fine, one case only so far (CUSA00402 - Crimsonland)
+                const auto& mount_dir = Common::FS::GetUserPath(Common::FS::PathType::SaveDataDir) /
+                                        "1" / "savedata" / id;
+                mnt->Mount(mount_dir, "/savedata0");
+
             } else if (entry.path().filename() == "pic0.png" ||
                        entry.path().filename() == "pic1.png") {
                 auto* splash = Common::Singleton<Splash>::Instance();