OvmfPkg: Apply uncrustify changes

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

/** @file\r
  FUSE_GETATTR wrapper for the Virtio Filesystem device.\r
\r
  Copyright (C) 2020, Red Hat, Inc.\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
**/\r
\r
#include "VirtioFsDxe.h"\r
\r
/**\r
  Send a FUSE_GETATTR request to the Virtio Filesystem device, for fetching the\r
  attributes of an inode.\r
\r
  The function may only be called after VirtioFsFuseInitSession() returns\r
  successfully and before VirtioFsUninit() is called.\r
\r
  @param[in,out] VirtioFs  The Virtio Filesystem device to send the\r
                           FUSE_GETATTR request to. On output, the FUSE request\r
                           counter "VirtioFs->RequestId" will have been\r
                           incremented.\r
\r
  @param[in] NodeId        The inode number for which the attributes should be\r
                           retrieved.\r
\r
  @param[out] FuseAttr     The VIRTIO_FS_FUSE_ATTRIBUTES_RESPONSE object\r
                           describing the properties of the inode.\r
\r
  @retval EFI_SUCCESS  FuseAttr has been filled in.\r
\r
  @return              The "errno" value mapped to an EFI_STATUS code, if the\r
                       Virtio Filesystem device explicitly reported an error.\r
\r
  @return              Error codes propagated from VirtioFsSgListsValidate(),\r
                       VirtioFsFuseNewRequest(), VirtioFsSgListsSubmit(),\r
                       VirtioFsFuseCheckResponse().\r
**/\r
EFI_STATUS\r
VirtioFsFuseGetAttr (\r
  IN OUT VIRTIO_FS                        *VirtioFs,\r
  IN     UINT64                           NodeId,\r
  OUT VIRTIO_FS_FUSE_ATTRIBUTES_RESPONSE  *FuseAttr\r
  )\r
{\r
  VIRTIO_FS_FUSE_REQUEST           CommonReq;\r
  VIRTIO_FS_FUSE_GETATTR_REQUEST   GetAttrReq;\r
  VIRTIO_FS_IO_VECTOR              ReqIoVec[2];\r
  VIRTIO_FS_SCATTER_GATHER_LIST    ReqSgList;\r
  VIRTIO_FS_FUSE_RESPONSE          CommonResp;\r
  VIRTIO_FS_FUSE_GETATTR_RESPONSE  GetAttrResp;\r
  VIRTIO_FS_IO_VECTOR              RespIoVec[3];\r
  VIRTIO_FS_SCATTER_GATHER_LIST    RespSgList;\r
  EFI_STATUS                       Status;\r
\r
  //\r
  // Set up the scatter-gather lists.\r
  //\r
  ReqIoVec[0].Buffer = &CommonReq;\r
  ReqIoVec[0].Size   = sizeof CommonReq;\r
  ReqIoVec[1].Buffer = &GetAttrReq;\r
  ReqIoVec[1].Size   = sizeof GetAttrReq;\r
  ReqSgList.IoVec    = ReqIoVec;\r
  ReqSgList.NumVec   = ARRAY_SIZE (ReqIoVec);\r
\r
  RespIoVec[0].Buffer = &CommonResp;\r
  RespIoVec[0].Size   = sizeof CommonResp;\r
  RespIoVec[1].Buffer = &GetAttrResp;\r
  RespIoVec[1].Size   = sizeof GetAttrResp;\r
  RespIoVec[2].Buffer = FuseAttr;\r
  RespIoVec[2].Size   = sizeof *FuseAttr;\r
  RespSgList.IoVec    = RespIoVec;\r
  RespSgList.NumVec   = ARRAY_SIZE (RespIoVec);\r
\r
  //\r
  // Validate the scatter-gather lists; calculate the total transfer sizes.\r
  //\r
  Status = VirtioFsSgListsValidate (VirtioFs, &ReqSgList, &RespSgList);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Populate the common request header.\r
  //\r
  Status = VirtioFsFuseNewRequest (\r
             VirtioFs,\r
             &CommonReq,\r
             ReqSgList.TotalSize,\r
             VirtioFsFuseOpGetAttr,\r
             NodeId\r
             );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Populate the FUSE_GETATTR-specific fields.\r
  //\r
  GetAttrReq.GetAttrFlags = 0;\r
  GetAttrReq.Dummy        = 0;\r
  GetAttrReq.FileHandle   = 0;\r
\r
  //\r
  // Submit the request.\r
  //\r
  Status = VirtioFsSgListsSubmit (VirtioFs, &ReqSgList, &RespSgList);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Verify the response (all response buffers are fixed size).\r
  //\r
  Status = VirtioFsFuseCheckResponse (&RespSgList, CommonReq.Unique, NULL);\r
  if (Status == EFI_DEVICE_ERROR) {\r
    DEBUG ((\r
      DEBUG_ERROR,\r
      "%a: Label=\"%s\" NodeId=%Lu Errno=%d\n",\r
      __FUNCTION__,\r
      VirtioFs->Label,\r
      NodeId,\r
      CommonResp.Error\r
      ));\r
    Status = VirtioFsErrnoToEfiStatus (CommonResp.Error);\r
  }\r
\r
  return Status;\r
}\r