MockFileOps Class Reference

Inheritance diagram for MockFileOps:

Collaboration diagram for MockFileOps:

Public Member Functions
auto	Read (File *, void *, size_t) -> Expected< size_t > override
	从文件读取数据
auto	Write (File *, const void *, size_t) -> Expected< size_t > override
	向文件写入数据
auto	Seek (File *, int64_t, SeekWhence) -> Expected< uint64_t > override
	调整文件偏移量
auto	Close (File *) -> Expected< void > override
	关闭文件
auto	ReadDir (File *, DirEntry *, size_t) -> Expected< size_t > override
	读取目录项
Public Member Functions inherited from vfs::FileOps
	FileOps ()=default
	FileOps (const FileOps &)=delete
	FileOps (FileOps &&)=delete
auto	operator= (const FileOps &) -> FileOps &=delete
auto	operator= (FileOps &&) -> FileOps &=delete
virtual	~FileOps ()=default

Detailed Description

Definition at line 19 of file vfs_test.cpp.

Member Function Documentation

Close()

auto MockFileOps::Close ( File *  file ) -> Expected< void >

inlineoverridevirtual

关闭文件

Parameters

file

文件对象

Returns

Expected<void> 成功或错误

Precondition

file != nullptr

Postcondition

file 对象将被释放

Implements vfs::FileOps.

Definition at line 30 of file vfs_test.cpp.

{ return {}; }

Read()

auto MockFileOps::Read ( File *  file, void *  buf, size_t  count  ) -> Expected< size_t >

inlineoverridevirtual

从文件读取数据

Parameters

file	文件对象
buf	输出缓冲区
count	最大读取字节数

Returns

Expected<size_t> 实际读取的字节数或错误

Precondition

file != nullptr && buf != nullptr

Postcondition

返回值 <= count

Implements vfs::FileOps.

Definition at line 21 of file vfs_test.cpp.

                                                               {
    return std::unexpected(Error(ErrorCode::kDeviceNotSupported));
  }

ReadDir()

auto MockFileOps::ReadDir ( File *  file, DirEntry *  dirent, size_t  count  ) -> Expected< size_t >

inlineoverridevirtual

读取目录项

Parameters

file	目录文件对象
dirent	输出目录项数组
count	最多读取的条目数

Returns

Expected<size_t> 实际读取的条目数或错误

Precondition

file != nullptr && file->inode->type == FileType::kDirectory

dirent != nullptr

Implements vfs::FileOps.

Definition at line 31 of file vfs_test.cpp.

                                                                      {
    return std::unexpected(Error(ErrorCode::kDeviceNotSupported));
  }

Seek()

auto MockFileOps::Seek ( File *  file, int64_t  offset, SeekWhence  whence  ) -> Expected< uint64_t >

inlineoverridevirtual

调整文件偏移量

Parameters

file	文件对象
offset	偏移量
whence	基准位置

Returns

Expected<uint64_t> 新的偏移量或错误

Precondition

file != nullptr

Implements vfs::FileOps.

Definition at line 27 of file vfs_test.cpp.

                                                                       {
    return std::unexpected(Error(ErrorCode::kDeviceNotSupported));
  }

Write()

auto MockFileOps::Write ( File *  file, const void *  buf, size_t  count  ) -> Expected< size_t >

inlineoverridevirtual

向文件写入数据

Parameters

file	文件对象
buf	输入缓冲区
count	要写入的字节数

Returns

Expected<size_t> 实际写入的字节数或错误

Precondition

file != nullptr && buf != nullptr

Postcondition

返回值 <= count

Implements vfs::FileOps.

Definition at line 24 of file vfs_test.cpp.

                                                                      {
    return std::unexpected(Error(ErrorCode::kDeviceNotSupported));
  }

---

The documentation for this class was generated from the following file:

• /workspaces/SimpleKernel/tests/unit_test/vfs_test.cpp