OvmfPkg: Apply uncrustify changes

[mirror_edk2.git] / OvmfPkg / VirtioFsDxe / DriverBinding.c

/** @file\r
  Provide EFI_SIMPLE_FILE_SYSTEM_PROTOCOL instances on virtio-fs devices.\r
\r
  Copyright (C) 2020, Red Hat, Inc.\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
**/\r
\r
#include <Library/BaseLib.h>                  // AsciiStrCmp()\r
#include <Library/MemoryAllocationLib.h>      // AllocatePool()\r
#include <Library/UefiBootServicesTableLib.h> // gBS\r
#include <Protocol/ComponentName2.h>          // EFI_COMPONENT_NAME2_PROTOCOL\r
#include <Protocol/DriverBinding.h>           // EFI_DRIVER_BINDING_PROTOCOL\r
\r
#include "VirtioFsDxe.h"\r
\r
//\r
// UEFI Driver Model protocol instances.\r
//\r
STATIC EFI_DRIVER_BINDING_PROTOCOL   mDriverBinding;\r
STATIC EFI_COMPONENT_NAME2_PROTOCOL  mComponentName2;\r
\r
//\r
// UEFI Driver Model protocol member functions.\r
//\r
EFI_STATUS\r
EFIAPI\r
VirtioFsBindingSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   ControllerHandle,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL\r
  )\r
{\r
  EFI_STATUS              Status;\r
  VIRTIO_DEVICE_PROTOCOL  *Virtio;\r
  EFI_STATUS              CloseStatus;\r
\r
  Status = gBS->OpenProtocol (\r
                  ControllerHandle,\r
                  &gVirtioDeviceProtocolGuid,\r
                  (VOID **)&Virtio,\r
                  This->DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  if (Virtio->SubSystemDeviceId != VIRTIO_SUBSYSTEM_FILESYSTEM) {\r
    Status = EFI_UNSUPPORTED;\r
  }\r
\r
  CloseStatus = gBS->CloseProtocol (\r
                       ControllerHandle,\r
                       &gVirtioDeviceProtocolGuid,\r
                       This->DriverBindingHandle,\r
                       ControllerHandle\r
                       );\r
  ASSERT_EFI_ERROR (CloseStatus);\r
\r
  return Status;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
VirtioFsBindingStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   ControllerHandle,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL\r
  )\r
{\r
  VIRTIO_FS   *VirtioFs;\r
  EFI_STATUS  Status;\r
  EFI_STATUS  CloseStatus;\r
\r
  VirtioFs = AllocatePool (sizeof *VirtioFs);\r
  if (VirtioFs == NULL) {\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
\r
  VirtioFs->Signature = VIRTIO_FS_SIG;\r
\r
  Status = gBS->OpenProtocol (\r
                  ControllerHandle,\r
                  &gVirtioDeviceProtocolGuid,\r
                  (VOID **)&VirtioFs->Virtio,\r
                  This->DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    goto FreeVirtioFs;\r
  }\r
\r
  Status = VirtioFsInit (VirtioFs);\r
  if (EFI_ERROR (Status)) {\r
    goto CloseVirtio;\r
  }\r
\r
  Status = VirtioFsFuseInitSession (VirtioFs);\r
  if (EFI_ERROR (Status)) {\r
    goto UninitVirtioFs;\r
  }\r
\r
  Status = gBS->CreateEvent (\r
                  EVT_SIGNAL_EXIT_BOOT_SERVICES,\r
                  TPL_CALLBACK,\r
                  VirtioFsExitBoot,\r
                  VirtioFs,\r
                  &VirtioFs->ExitBoot\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    goto UninitVirtioFs;\r
  }\r
\r
  InitializeListHead (&VirtioFs->OpenFiles);\r
  VirtioFs->SimpleFs.Revision   = EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION;\r
  VirtioFs->SimpleFs.OpenVolume = VirtioFsOpenVolume;\r
\r
  Status = gBS->InstallProtocolInterface (\r
                  &ControllerHandle,\r
                  &gEfiSimpleFileSystemProtocolGuid,\r
                  EFI_NATIVE_INTERFACE,\r
                  &VirtioFs->SimpleFs\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    goto CloseExitBoot;\r
  }\r
\r
  return EFI_SUCCESS;\r
\r
CloseExitBoot:\r
  CloseStatus = gBS->CloseEvent (VirtioFs->ExitBoot);\r
  ASSERT_EFI_ERROR (CloseStatus);\r
\r
UninitVirtioFs:\r
  VirtioFsUninit (VirtioFs);\r
\r
CloseVirtio:\r
  CloseStatus = gBS->CloseProtocol (\r
                       ControllerHandle,\r
                       &gVirtioDeviceProtocolGuid,\r
                       This->DriverBindingHandle,\r
                       ControllerHandle\r
                       );\r
  ASSERT_EFI_ERROR (CloseStatus);\r
\r
FreeVirtioFs:\r
  FreePool (VirtioFs);\r
\r
  return Status;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
VirtioFsBindingStop (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   ControllerHandle,\r
  IN UINTN                        NumberOfChildren,\r
  IN EFI_HANDLE                   *ChildHandleBuffer OPTIONAL\r
  )\r
{\r
  EFI_STATUS                       Status;\r
  EFI_SIMPLE_FILE_SYSTEM_PROTOCOL  *SimpleFs;\r
  VIRTIO_FS                        *VirtioFs;\r
\r
  Status = gBS->OpenProtocol (\r
                  ControllerHandle,\r
                  &gEfiSimpleFileSystemProtocolGuid,\r
                  (VOID **)&SimpleFs,\r
                  This->DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  VirtioFs = VIRTIO_FS_FROM_SIMPLE_FS (SimpleFs);\r
\r
  if (!IsListEmpty (&VirtioFs->OpenFiles)) {\r
    return EFI_ACCESS_DENIED;\r
  }\r
\r
  Status = gBS->UninstallProtocolInterface (\r
                  ControllerHandle,\r
                  &gEfiSimpleFileSystemProtocolGuid,\r
                  SimpleFs\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  Status = gBS->CloseEvent (VirtioFs->ExitBoot);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  VirtioFsUninit (VirtioFs);\r
\r
  Status = gBS->CloseProtocol (\r
                  ControllerHandle,\r
                  &gVirtioDeviceProtocolGuid,\r
                  This->DriverBindingHandle,\r
                  ControllerHandle\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  FreePool (VirtioFs);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
VirtioFsGetDriverName (\r
  IN  EFI_COMPONENT_NAME2_PROTOCOL  *This,\r
  IN  CHAR8                         *Language,\r
  OUT CHAR16                        **DriverName\r
  )\r
{\r
  if (AsciiStrCmp (Language, "en") != 0) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  *DriverName = L"Virtio Filesystem Driver";\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
VirtioFsGetControllerName (\r
  IN  EFI_COMPONENT_NAME2_PROTOCOL  *This,\r
  IN  EFI_HANDLE                    ControllerHandle,\r
  IN  EFI_HANDLE                    ChildHandle OPTIONAL,\r
  IN  CHAR8                         *Language,\r
  OUT CHAR16                        **ControllerName\r
  )\r
{\r
  return EFI_UNSUPPORTED;\r
}\r
\r
//\r
// Entry point of this driver.\r
//\r
EFI_STATUS\r
EFIAPI\r
VirtioFsEntryPoint (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  mDriverBinding.Supported           = VirtioFsBindingSupported;\r
  mDriverBinding.Start               = VirtioFsBindingStart;\r
  mDriverBinding.Stop                = VirtioFsBindingStop;\r
  mDriverBinding.Version             = 0x10;\r
  mDriverBinding.ImageHandle         = ImageHandle;\r
  mDriverBinding.DriverBindingHandle = ImageHandle;\r
\r
  mComponentName2.GetDriverName      = VirtioFsGetDriverName;\r
  mComponentName2.GetControllerName  = VirtioFsGetControllerName;\r
  mComponentName2.SupportedLanguages = "en";\r
\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &ImageHandle,\r
                  &gEfiDriverBindingProtocolGuid,\r
                  &mDriverBinding,\r
                  &gEfiComponentName2ProtocolGuid,\r
                  &mComponentName2,\r
                  NULL\r
                  );\r
  return Status;\r
}\r