From e15039372ea63efb37cdaa70833b2d080931ee3c Mon Sep 17 00:00:00 2001
From: Morph <39850852+Morph1984@users.noreply.github.com>
Date: Thu, 3 Dec 2020 22:57:28 -0500
Subject: fsp_srv: Implement OpenDataStorageWithProgramIndex

- Used by RollerCoaster Tycoon 3: Complete Edition
---
 src/core/hle/service/filesystem/filesystem.cpp | 25 +++++++++++++++++++++++
 src/core/hle/service/filesystem/filesystem.h   |  4 ++++
 src/core/hle/service/filesystem/fsp_srv.cpp    | 28 +++++++++++++++++++++++++-
 src/core/hle/service/filesystem/fsp_srv.h      |  1 +
 4 files changed, 57 insertions(+), 1 deletion(-)

(limited to 'src/core/hle')

diff --git a/src/core/hle/service/filesystem/filesystem.cpp b/src/core/hle/service/filesystem/filesystem.cpp
index ca93062cf..0e9e06267 100644
--- a/src/core/hle/service/filesystem/filesystem.cpp
+++ b/src/core/hle/service/filesystem/filesystem.cpp
@@ -298,6 +298,31 @@ ResultVal<FileSys::VirtualFile> FileSystemController::OpenRomFSCurrentProcess()
     return romfs_factory->OpenCurrentProcess(system.CurrentProcess()->GetTitleID());
 }
 
+ResultVal<FileSys::VirtualFile> FileSystemController::OpenPatchedRomFS(
+    u64 title_id, FileSys::ContentRecordType type) const {
+    LOG_TRACE(Service_FS, "Opening patched RomFS for title_id={:016X}", title_id);
+
+    if (romfs_factory == nullptr) {
+        // TODO: Find a better error code for this
+        return RESULT_UNKNOWN;
+    }
+
+    return romfs_factory->OpenPatchedRomFS(title_id, type);
+}
+
+ResultVal<FileSys::VirtualFile> FileSystemController::OpenPatchedRomFSWithProgramIndex(
+    u64 title_id, u8 program_index, FileSys::ContentRecordType type) const {
+    LOG_TRACE(Service_FS, "Opening patched RomFS for title_id={:016X}, program_index={}", title_id,
+              program_index);
+
+    if (romfs_factory == nullptr) {
+        // TODO: Find a better error code for this
+        return RESULT_UNKNOWN;
+    }
+
+    return romfs_factory->OpenPatchedRomFSWithProgramIndex(title_id, program_index, type);
+}
+
 ResultVal<FileSys::VirtualFile> FileSystemController::OpenRomFS(
     u64 title_id, FileSys::StorageId storage_id, FileSys::ContentRecordType type) const {
     LOG_TRACE(Service_FS, "Opening RomFS for title_id={:016X}, storage_id={:02X}, type={:02X}",
diff --git a/src/core/hle/service/filesystem/filesystem.h b/src/core/hle/service/filesystem/filesystem.h
index 6dbbf0b2b..7102d3f9a 100644
--- a/src/core/hle/service/filesystem/filesystem.h
+++ b/src/core/hle/service/filesystem/filesystem.h
@@ -66,6 +66,10 @@ public:
 
     void SetPackedUpdate(FileSys::VirtualFile update_raw);
     ResultVal<FileSys::VirtualFile> OpenRomFSCurrentProcess() const;
+    ResultVal<FileSys::VirtualFile> OpenPatchedRomFS(u64 title_id,
+                                                     FileSys::ContentRecordType type) const;
+    ResultVal<FileSys::VirtualFile> OpenPatchedRomFSWithProgramIndex(
+        u64 title_id, u8 program_index, FileSys::ContentRecordType type) const;
     ResultVal<FileSys::VirtualFile> OpenRomFS(u64 title_id, FileSys::StorageId storage_id,
                                               FileSys::ContentRecordType type) const;
     ResultVal<FileSys::VirtualDir> CreateSaveData(
diff --git a/src/core/hle/service/filesystem/fsp_srv.cpp b/src/core/hle/service/filesystem/fsp_srv.cpp
index b3480494c..a3623e0be 100644
--- a/src/core/hle/service/filesystem/fsp_srv.cpp
+++ b/src/core/hle/service/filesystem/fsp_srv.cpp
@@ -718,7 +718,7 @@ FSP_SRV::FSP_SRV(Core::System& system_)
         {202, &FSP_SRV::OpenDataStorageByDataId, "OpenDataStorageByDataId"},
         {203, &FSP_SRV::OpenPatchDataStorageByCurrentProcess, "OpenPatchDataStorageByCurrentProcess"},
         {204, nullptr, "OpenDataFileSystemByProgramIndex"},
-        {205, nullptr, "OpenDataStorageByProgramIndex"},
+        {205, &FSP_SRV::OpenDataStorageWithProgramIndex, "OpenDataStorageWithProgramIndex"},
         {400, nullptr, "OpenDeviceOperator"},
         {500, nullptr, "OpenSdCardDetectionEventNotifier"},
         {501, nullptr, "OpenGameCardDetectionEventNotifier"},
@@ -997,6 +997,32 @@ void FSP_SRV::OpenPatchDataStorageByCurrentProcess(Kernel::HLERequestContext& ct
     rb.Push(FileSys::ERROR_ENTITY_NOT_FOUND);
 }
 
+void FSP_SRV::OpenDataStorageWithProgramIndex(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+
+    const auto program_index = rp.PopRaw<u8>();
+
+    LOG_DEBUG(Service_FS, "called, program_index={}", program_index);
+
+    auto romfs = fsc.OpenPatchedRomFSWithProgramIndex(
+        system.CurrentProcess()->GetTitleID(), program_index, FileSys::ContentRecordType::Program);
+
+    if (romfs.Failed()) {
+        // TODO: Find the right error code to use here
+        LOG_ERROR(Service_FS, "could not open storage with program_index={}", program_index);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_UNKNOWN);
+        return;
+    }
+
+    auto storage = std::make_shared<IStorage>(system, std::move(romfs.Unwrap()));
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IStorage>(std::move(storage));
+}
+
 void FSP_SRV::SetGlobalAccessLogMode(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
     log_mode = rp.PopEnum<LogMode>();
diff --git a/src/core/hle/service/filesystem/fsp_srv.h b/src/core/hle/service/filesystem/fsp_srv.h
index 472286d6e..8ed933279 100644
--- a/src/core/hle/service/filesystem/fsp_srv.h
+++ b/src/core/hle/service/filesystem/fsp_srv.h
@@ -49,6 +49,7 @@ private:
     void OpenDataStorageByCurrentProcess(Kernel::HLERequestContext& ctx);
     void OpenDataStorageByDataId(Kernel::HLERequestContext& ctx);
     void OpenPatchDataStorageByCurrentProcess(Kernel::HLERequestContext& ctx);
+    void OpenDataStorageWithProgramIndex(Kernel::HLERequestContext& ctx);
     void SetGlobalAccessLogMode(Kernel::HLERequestContext& ctx);
     void GetGlobalAccessLogMode(Kernel::HLERequestContext& ctx);
     void OutputAccessLogToSdCard(Kernel::HLERequestContext& ctx);
-- 
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