FuseForget.c

Go to the documentation of this file.

 
#include "VirtioFsDxe.h"
 
EFI_STATUS
VirtioFsFuseForget (
  IN OUT VIRTIO_FS  *VirtioFs,
  IN     UINT64     NodeId
  )
{
  VIRTIO_FS_FUSE_REQUEST         CommonReq;
  VIRTIO_FS_FUSE_FORGET_REQUEST  ForgetReq;
  VIRTIO_FS_IO_VECTOR            ReqIoVec[2];
  VIRTIO_FS_SCATTER_GATHER_LIST  ReqSgList;
  EFI_STATUS                     Status;
 
  //
  // Set up the scatter-gather list (note: only request).
  //
  ReqIoVec[0].Buffer = &CommonReq;
  ReqIoVec[0].Size   = sizeof CommonReq;
  ReqIoVec[1].Buffer = &ForgetReq;
  ReqIoVec[1].Size   = sizeof ForgetReq;
  ReqSgList.IoVec    = ReqIoVec;
  ReqSgList.NumVec   = ARRAY_SIZE (ReqIoVec);
 
  //
  // Validate the scatter-gather list (request only); calculate the total
  // transfer size.
  //
  Status = VirtioFsSgListsValidate (VirtioFs, &ReqSgList, NULL);
  if (EFI_ERROR (Status)) {
    return Status;
  }
 
  //
  // Populate the common request header.
  //
  Status = VirtioFsFuseNewRequest (
             VirtioFs,
             &CommonReq,
             ReqSgList.TotalSize,
             VirtioFsFuseOpForget,
             NodeId
             );
  if (EFI_ERROR (Status)) {
    return Status;
  }
 
  //
  // Populate the FUSE_FORGET-specific fields.
  //
  ForgetReq.NumberOfLookups = 1;
 
  //
  // Submit the request. There's not going to be a response.
  //
  Status = VirtioFsSgListsSubmit (VirtioFs, &ReqSgList, NULL);
  return Status;
}