WFS: Fix shutdown behavior with long hanging requests.

Source/Core/Core/IOS/WFS/WFSI.cpp

@@ -15,6 +15,7 @@
 #include "Common/FileUtil.h"
 #include "Common/Logging/Log.h"
 #include "Core/HW/Memmap.h"
+#include "Core/IOS/ES/ES.h"
 #include "Core/IOS/ES/Formats.h"
 #include "Core/IOS/WFS/WFSSRV.h"
 #include "DiscIO/NANDContentLoader.h"
@@ -215,8 +216,13 @@ IPCCommandResult WFSI::IOCtl(const IOCtlRequest& request)
     break;
 
   case IOCTL_WFSI_INIT:
-    // Nothing to do.
     INFO_LOG(IOS, "IOCTL_WFSI_INIT");
+    if (GetIOS()->GetES()->GetTitleId(&m_title_id) < 0)
+    {
+      ERROR_LOG(IOS, "IOCTL_WFSI_INIT: Could not get title id.");
+      return_error_code = IPC_EINVAL;
+      break;
+    }
     break;
 
   case IOCTL_WFSI_SET_DEVICE_NAME:
@@ -235,6 +241,51 @@ IPCCommandResult WFSI::IOCtl(const IOCtlRequest& request)
 
     break;
 
+  case IOCTL_WFSI_LOAD_DOL:
+  {
+    std::string path = StringFromFormat(
+        "/vol/%s/_install/%c%c%c%c/content", m_device_name.c_str(),
+        static_cast<char>(m_title_id >> 24), static_cast<char>(m_title_id >> 16),
+        static_cast<char>(m_title_id >> 8), static_cast<char>(m_title_id));
+
+    u32 dol_addr = Memory::Read_U32(request.buffer_in + 0x18);
+    u32 max_dol_size = Memory::Read_U32(request.buffer_in + 0x14);
+    u16 dol_extension_id = Memory::Read_U16(request.buffer_in + 0x1e);
+
+    if (dol_extension_id == 0)
+    {
+      path += "/default.dol";
+    }
+    else
+    {
+      path += StringFromFormat("/extension%d.dol", dol_extension_id);
+    }
+
+    INFO_LOG(IOS, "IOCTL_WFSI_LOAD_DOL: loading %s at address %08x (size %d)", path.c_str(),
+             dol_addr, max_dol_size);
+
+    File::IOFile fp(WFS::NativePath(path), "rb");
+    if (!fp)
+    {
+      WARN_LOG(IOS, "IOCTL_WFSI_LOAD_DOL: no such file or directory: %s", path.c_str());
+      return_error_code = WFSI_ENOENT;
+      break;
+    }
+
+    u32 real_dol_size = fp.GetSize();
+    if (dol_addr == 0)
+    {
+      // Write the expected size to the size parameter, in the input.
+      Memory::Write_U32(real_dol_size, request.buffer_in + 0x14);
+    }
+    else
+    {
+      fp.ReadBytes(Memory::GetPointer(dol_addr), max_dol_size);
+    }
+    Memory::Write_U32(real_dol_size, request.buffer_out);
+    break;
+  }
+
   default:
     // TODO(wfs): Should be returning an error. However until we have
     // everything properly stubbed it's easier to simulate the methods

Source/Core/Core/IOS/WFS/WFSI.h

@@ -52,9 +52,15 @@ private:
 
   IOS::ES::TMDReader m_tmd;
   std::string m_base_extract_path;
+  u64 m_title_id;
 
   ARCUnpacker m_arc_unpacker;
 
+  enum
+  {
+    WFSI_ENOENT = -12000,
+  };
+
   enum
   {
     IOCTL_WFSI_PREPARE_DEVICE = 0x02,
@@ -74,6 +80,8 @@ private:
     IOCTL_WFSI_FINALIZE_PROFILE = 0x88,
 
     IOCTL_WFSI_APPLY_TITLE_PROFILE = 0x89,
+
+    IOCTL_WFSI_LOAD_DOL = 0x90,
   };
 };
 }  // namespace Device

Source/Core/Core/IOS/WFS/WFSSRV.cpp

@@ -44,6 +44,20 @@ IPCCommandResult WFSSRV::IOCtl(const IOCtlRequest& request)
     INFO_LOG(IOS, "IOCTL_WFS_INIT");
     break;
 
+  case IOCTL_WFS_SHUTDOWN:
+    INFO_LOG(IOS, "IOCTL_WFS_SHUTDOWN");
+
+    // Close all hanging attach/detach ioctls with an appropriate error code.
+    for (auto address : m_hanging)
+    {
+      IOCtlRequest hanging_request{address};
+      Memory::Write_U32(0x80000000, hanging_request.buffer_out);
+      Memory::Write_U32(0, hanging_request.buffer_out + 4);
+      Memory::Write_U32(0, hanging_request.buffer_out + 8);
+      m_ios.EnqueueIPCReply(hanging_request, 0);
+    }
+    break;
+
   case IOCTL_WFS_DEVICE_INFO:
     INFO_LOG(IOS, "IOCTL_WFS_DEVICE_INFO");
     Memory::Write_U64(16ull << 30, request.buffer_out);  // 16GB storage.
@@ -68,9 +82,9 @@ IPCCommandResult WFSSRV::IOCtl(const IOCtlRequest& request)
 
   case IOCTL_WFS_ATTACH_DETACH:
     INFO_LOG(IOS, "IOCTL_WFS_ATTACH_DETACH(%u)", request.request);
-    Memory::Write_U32(1, request.buffer_out);
-    Memory::Write_U32(0, request.buffer_out + 4);
-    Memory::Write_U32(0, request.buffer_out + 8);
+
+    // Leave hanging, but we need to acknowledge the request at shutdown time.
+    m_hanging.push_back(request.address);
     return GetNoReply();
 
   // TODO(wfs): Globbing is not really implemented, we just fake the one case

Source/Core/Core/IOS/WFS/WFSSRV.h

@@ -38,8 +38,10 @@ private:
   enum
   {
     IOCTL_WFS_INIT = 0x02,
+    IOCTL_WFS_SHUTDOWN = 0x03,
     IOCTL_WFS_DEVICE_INFO = 0x04,
     IOCTL_WFS_GET_DEVICE_NAME = 0x05,
+    IOCTL_WFS_UNMOUNT_VOLUME = 0x06,
     IOCTL_WFS_FLUSH = 0x0a,
     IOCTL_WFS_GLOB_START = 0x0d,
     IOCTL_WFS_GLOB_NEXT = 0x0e,
@@ -75,6 +77,10 @@ private:
   };
   std::vector<FileDescriptor> m_fds;
 
+  // List of addresses of IPC requests left hanging that need closing at
+  // shutdown time.
+  std::vector<u32> m_hanging;
+
   FileDescriptor* FindFileDescriptor(u16 fd);
   u16 GetNewFileDescriptor();
   void ReleaseFileDescriptor(u16 fd);