OvmfPkg: Apply uncrustify changes

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

/** @file\r
  EFI_FILE_PROTOCOL.GetInfo() member function for the Virtio Filesystem driver.\r
\r
  Copyright (C) 2020, Red Hat, Inc.\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
**/\r
\r
#include <Guid/FileSystemInfo.h>            // gEfiFileSystemInfoGuid\r
#include <Guid/FileSystemVolumeLabelInfo.h> // gEfiFileSystemVolumeLabelInfo...\r
#include <Library/BaseLib.h>                // StrSize()\r
#include <Library/BaseMemoryLib.h>          // CompareGuid()\r
\r
#include "VirtioFsDxe.h"\r
\r
/**\r
  Provide EFI_FILE_INFO about this particular file.\r
**/\r
STATIC\r
EFI_STATUS\r
GetFileInfo (\r
  IN     EFI_FILE_PROTOCOL  *This,\r
  IN OUT UINTN              *BufferSize,\r
  OUT VOID                  *Buffer\r
  )\r
{\r
  VIRTIO_FS_FILE                      *VirtioFsFile;\r
  VIRTIO_FS                           *VirtioFs;\r
  UINTN                               AllocSize;\r
  UINTN                               BasenameSize;\r
  EFI_STATUS                          Status;\r
  EFI_FILE_INFO                       *FileInfo;\r
  VIRTIO_FS_FUSE_ATTRIBUTES_RESPONSE  FuseAttr;\r
\r
  VirtioFsFile = VIRTIO_FS_FILE_FROM_SIMPLE_FILE (This);\r
  VirtioFs     = VirtioFsFile->OwnerFs;\r
\r
  AllocSize = *BufferSize;\r
\r
  //\r
  // Calculate the needed size.\r
  //\r
  BasenameSize = 0;\r
  Status       = VirtioFsGetBasename (\r
                   VirtioFsFile->CanonicalPathname,\r
                   NULL,\r
                   &BasenameSize\r
                   );\r
  ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r
  *BufferSize = OFFSET_OF (EFI_FILE_INFO, FileName) + BasenameSize;\r
\r
  if (*BufferSize > AllocSize) {\r
    return EFI_BUFFER_TOO_SMALL;\r
  }\r
\r
  //\r
  // Set the structure size, and store the basename.\r
  //\r
  FileInfo       = Buffer;\r
  FileInfo->Size = *BufferSize;\r
  Status         = VirtioFsGetBasename (\r
                     VirtioFsFile->CanonicalPathname,\r
                     FileInfo->FileName,\r
                     &BasenameSize\r
                     );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  //\r
  // Fetch the file attributes, and convert them into the caller's buffer.\r
  //\r
  Status = VirtioFsFuseGetAttr (VirtioFs, VirtioFsFile->NodeId, &FuseAttr);\r
  if (!EFI_ERROR (Status)) {\r
    Status = VirtioFsFuseAttrToEfiFileInfo (&FuseAttr, FileInfo);\r
  }\r
\r
  return (Status == EFI_BUFFER_TOO_SMALL) ? EFI_DEVICE_ERROR : Status;\r
}\r
\r
/**\r
  Provide EFI_FILE_SYSTEM_INFO about the filesystem this file lives on.\r
**/\r
STATIC\r
EFI_STATUS\r
GetFileSystemInfo (\r
  IN     EFI_FILE_PROTOCOL  *This,\r
  IN OUT UINTN              *BufferSize,\r
  OUT VOID                  *Buffer\r
  )\r
{\r
  VIRTIO_FS_FILE                  *VirtioFsFile;\r
  VIRTIO_FS                       *VirtioFs;\r
  UINTN                           AllocSize;\r
  UINTN                           LabelSize;\r
  EFI_STATUS                      Status;\r
  VIRTIO_FS_FUSE_STATFS_RESPONSE  FilesysAttr;\r
  UINT64                          MaxBlocks;\r
  EFI_FILE_SYSTEM_INFO            *FilesysInfo;\r
\r
  VirtioFsFile = VIRTIO_FS_FILE_FROM_SIMPLE_FILE (This);\r
  VirtioFs     = VirtioFsFile->OwnerFs;\r
\r
  AllocSize = *BufferSize;\r
\r
  //\r
  // Calculate the needed size.\r
  //\r
  LabelSize   = StrSize (VirtioFs->Label);\r
  *BufferSize = OFFSET_OF (EFI_FILE_SYSTEM_INFO, VolumeLabel) + LabelSize;\r
\r
  if (*BufferSize > AllocSize) {\r
    return EFI_BUFFER_TOO_SMALL;\r
  }\r
\r
  //\r
  // Fetch the filesystem attributes.\r
  //\r
  Status = VirtioFsFuseStatFs (VirtioFs, VirtioFsFile->NodeId, &FilesysAttr);\r
  if (EFI_ERROR (Status)) {\r
    return (Status == EFI_BUFFER_TOO_SMALL) ? EFI_DEVICE_ERROR : Status;\r
  }\r
\r
  //\r
  // Sanity checks...\r
  //\r
  if (FilesysAttr.Frsize != FilesysAttr.Bsize) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if ((FilesysAttr.Frsize == 0) || (FilesysAttr.Blocks == 0) ||\r
      (FilesysAttr.Bavail > FilesysAttr.Blocks))\r
  {\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  MaxBlocks = DivU64x32 (MAX_UINT64, FilesysAttr.Frsize);\r
  if ((FilesysAttr.Blocks > MaxBlocks) || (FilesysAttr.Bavail > MaxBlocks)) {\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  //\r
  // Fill in EFI_FILE_SYSTEM_INFO.\r
  //\r
  FilesysInfo             = Buffer;\r
  FilesysInfo->Size       = *BufferSize;\r
  FilesysInfo->ReadOnly   = FALSE;\r
  FilesysInfo->VolumeSize = MultU64x32 (\r
                              FilesysAttr.Blocks,\r
                              FilesysAttr.Frsize\r
                              );\r
  FilesysInfo->FreeSpace = MultU64x32 (\r
                             FilesysAttr.Bavail,\r
                             FilesysAttr.Frsize\r
                             );\r
  FilesysInfo->BlockSize = FilesysAttr.Frsize;\r
  CopyMem (FilesysInfo->VolumeLabel, VirtioFs->Label, LabelSize);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Return the filesystem label as EFI_FILE_SYSTEM_VOLUME_LABEL.\r
**/\r
STATIC\r
EFI_STATUS\r
GetFileSystemVolumeLabelInfo (\r
  IN     EFI_FILE_PROTOCOL  *This,\r
  IN OUT UINTN              *BufferSize,\r
  OUT VOID                  *Buffer\r
  )\r
{\r
  VIRTIO_FS_FILE                *VirtioFsFile;\r
  VIRTIO_FS                     *VirtioFs;\r
  UINTN                         AllocSize;\r
  UINTN                         LabelSize;\r
  EFI_FILE_SYSTEM_VOLUME_LABEL  *FilesysVolumeLabel;\r
\r
  VirtioFsFile = VIRTIO_FS_FILE_FROM_SIMPLE_FILE (This);\r
  VirtioFs     = VirtioFsFile->OwnerFs;\r
\r
  AllocSize = *BufferSize;\r
\r
  //\r
  // Calculate the needed size.\r
  //\r
  LabelSize   = StrSize (VirtioFs->Label);\r
  *BufferSize = (OFFSET_OF (EFI_FILE_SYSTEM_VOLUME_LABEL, VolumeLabel) +\r
                 LabelSize);\r
\r
  if (*BufferSize > AllocSize) {\r
    return EFI_BUFFER_TOO_SMALL;\r
  }\r
\r
  //\r
  // Store the label.\r
  //\r
  FilesysVolumeLabel = Buffer;\r
  CopyMem (FilesysVolumeLabel->VolumeLabel, VirtioFs->Label, LabelSize);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
VirtioFsSimpleFileGetInfo (\r
  IN     EFI_FILE_PROTOCOL  *This,\r
  IN     EFI_GUID           *InformationType,\r
  IN OUT UINTN              *BufferSize,\r
  OUT VOID                  *Buffer\r
  )\r
{\r
  if (CompareGuid (InformationType, &gEfiFileInfoGuid)) {\r
    return GetFileInfo (This, BufferSize, Buffer);\r
  }\r
\r
  if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid)) {\r
    return GetFileSystemInfo (This, BufferSize, Buffer);\r
  }\r
\r
  if (CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid)) {\r
    return GetFileSystemVolumeLabelInfo (This, BufferSize, Buffer);\r
  }\r
\r
  return EFI_UNSUPPORTED;\r
}\r