MockFs Class Reference

Inheritance diagram for MockFs:

Collaboration diagram for MockFs:

Public Member Functions
	MockFs ()
auto	GetName () const -> const char *override
	获取文件系统类型名（如 "ramfs", "fat32"）
auto	Mount (BlockDevice *device) -> Expected< Inode * > override
	挂载文件系统
auto	Unmount () -> Expected< void > override
	卸载文件系统
auto	Sync () -> Expected< void > override
	将缓存数据刷写到磁盘
auto	AllocateInode () -> Expected< Inode * > override
	分配新 inode
auto	FreeInode (Inode *) -> Expected< void > override
	释放 inode
auto	GetFileOps () -> FileOps *override
	获取文件系统的文件操作接口
Public Member Functions inherited from vfs::FileSystem
virtual	~FileSystem ()=default

Public Attributes
bool	mount_called = false
bool	unmount_called = false
bool	sync_called = false
BlockDevice *	last_device = nullptr
MockFileOps	mock_file_ops_
Inode	root_inode

Detailed Description

Definition at line 37 of file vfs_test.cpp.

Constructor & Destructor Documentation

MockFs()

MockFs::MockFs ( )

inline

Definition at line 47 of file vfs_test.cpp.

           {
    root_inode.type = FileType::kDirectory;
    root_inode.ino = 1;
    root_inode.ops = nullptr;  // MockFs doesn't provide InodeOps
  }

Member Function Documentation

AllocateInode()

auto MockFs::AllocateInode ( ) -> Expected< Inode * >

inlineoverridevirtual

分配新 inode

Returns

Expected<Inode*> 新分配的 inode 或错误

Note

由具体文件系统实现 inode 分配策略

Implements vfs::FileSystem.

Definition at line 73 of file vfs_test.cpp.

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

FreeInode()

auto MockFs::FreeInode ( Inode *  inode ) -> Expected< void >

inlineoverridevirtual

释放 inode

Parameters

inode

要释放的 inode

Returns

Expected<void> 成功或错误

Precondition

inode != nullptr

inode->link_count == 0

Implements vfs::FileSystem.

Definition at line 77 of file vfs_test.cpp.

{ return {}; }

GetFileOps()

auto MockFs::GetFileOps ( ) -> FileOps *override

inlineoverridevirtual

获取文件系统的文件操作接口

Returns

FileOps* 文件操作接口指针

Note

用于创建 File 对象时设置 ops

Implements vfs::FileSystem.

Definition at line 79 of file vfs_test.cpp.

{ return &mock_file_ops_; }

GetName()

auto MockFs::GetName ( ) const -> const char *override

inlineoverridevirtual

获取文件系统类型名（如 "ramfs", "fat32"）

Returns

文件系统类型名

Implements vfs::FileSystem.

Definition at line 53 of file vfs_test.cpp.

                                                             {
    return "mockfs";
  }

Mount()

auto MockFs::Mount ( BlockDevice *  device ) -> Expected< Inode * >

inlineoverridevirtual

挂载文件系统

Parameters

device

块设备指针（ramfs 等内存文件系统传 nullptr）

Returns

Expected<Inode*> 根目录 inode

Postcondition

返回的 inode->type == FileType::kDirectory

Implements vfs::FileSystem.

Definition at line 57 of file vfs_test.cpp.

                                                               {
    mount_called = true;
    last_device = device;
    return &root_inode;
  }

Sync()

auto MockFs::Sync ( ) -> Expected< void >

inlineoverridevirtual

将缓存数据刷写到磁盘

Returns

Expected<void> 成功或错误

Implements vfs::FileSystem.

Definition at line 68 of file vfs_test.cpp.

                                         {
    sync_called = true;
    return {};
  }

Unmount()

auto MockFs::Unmount ( ) -> Expected< void >

inlineoverridevirtual

卸载文件系统

Returns

Expected<void> 成功或错误

Precondition

没有打开的文件引用此文件系统

Implements vfs::FileSystem.

Definition at line 63 of file vfs_test.cpp.

                                            {
    unmount_called = true;
    return {};
  }

Member Data Documentation

last_device

BlockDevice* MockFs::last_device = nullptr

mutable

Definition at line 42 of file vfs_test.cpp.

mock_file_ops_

MockFileOps MockFs::mock_file_ops_

Definition at line 43 of file vfs_test.cpp.

mount_called

bool MockFs::mount_called = false

mutable

Definition at line 39 of file vfs_test.cpp.

root_inode

Inode MockFs::root_inode

Definition at line 45 of file vfs_test.cpp.

sync_called

bool MockFs::sync_called = false

mutable

Definition at line 41 of file vfs_test.cpp.

unmount_called

bool MockFs::unmount_called = false

mutable

Definition at line 40 of file vfs_test.cpp.

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

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