Struct TmpNode

pub struct TmpNode {
    name: RwLock<String>,
    file_type: RwLock<FileType>,
    metadata: RwLock<FileMetadata>,
    content: RwLock<Vec<u8>>,
    children: RwLock<BTreeMap<String, Arc<dyn VfsNode>>>,
    parent: RwLock<Option<Weak<TmpNode>>>,
    filesystem: RwLock<Option<Weak<dyn FileSystemOperations>>>,
}

TmpNode represents a file, directory, or device node in TmpFS.

Each node contains metadata, content (for files), children (for directories), and references to its parent and filesystem. All fields are protected by locks for thread safety.

Fields

name: RwLock<String>

File name

file_type: RwLock<FileType>

File type

metadata: RwLock<FileMetadata>

File metadata

content: RwLock<Vec<u8>>

File content (for regular files)

children: RwLock<BTreeMap<String, Arc<dyn VfsNode>>>

Child nodes (for directories)

parent: RwLock<Option<Weak<TmpNode>>>

Parent node (weak reference to avoid cycles)

filesystem: RwLock<Option<Weak<dyn FileSystemOperations>>>

Reference to filesystem (Weak)

Implementations

impl TmpNode

pub fn new_file(name: String, file_id: u64) -> Self

Create a new regular file node

pub fn new_directory(name: String, file_id: u64) -> Self

Create a new directory node

pub fn new_device(name: String, file_type: FileType, file_id: u64) -> Self

Create a new device file node

pub fn new_symlink(name: String, target: String, file_id: u64) -> Self

Create a new symbolic link node

pub fn set_filesystem(&self, fs: Weak<dyn FileSystemOperations>)

Set the filesystem reference for this node

pub fn update_size(&self, new_size: u64)

Update file size in metadata

pub fn set_parent(&self, parent: Weak<TmpNode>)

Set parent reference for this node

pub fn is_filesystem_root(&self) -> bool

Check if this node is the root of the filesystem

pub fn name(&self) -> String

Get the file name

pub fn file_type(&self) -> FileType

Get the file type

pub fn filesystem(&self) -> Option<Weak<dyn FileSystemOperations>>

Get the filesystem reference

pub fn parent(&self) -> Option<Weak<TmpNode>>

Get the parent node

Trait Implementations

impl Debug for TmpNode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl VfsNode for TmpNode

fn id(&self) -> u64

Returns the unique identifier in the filesystem

fn filesystem(&self) -> Option<Weak<dyn FileSystemOperations>>

Returns a (Weak) reference to the filesystem this node belongs to

fn metadata(&self) -> Result<FileMetadata, FileSystemError>

Get metadata for this node

fn as_any(&self) -> &dyn Any

Helper for downcasting

fn read_link(&self) -> Result<String, FileSystemError>

Read the target of a symbolic link (returns error if not a symlink)

fn file_type(&self) -> Result<FileType, FileSystemError>

Get the file type of this node

fn is_directory(&self) -> Result<bool, FileSystemError>

Returns true if this node is a directory

fn is_symlink(&self) -> Result<bool, FileSystemError>

Returns true if this node is a symbolic link