Struct MountPoint

pub struct MountPoint {
    pub path: String,
    pub fs: FileSystemRef,
    pub fs_id: usize,
    pub mount_type: MountType,
    pub mount_options: MountOptions,
    pub parent: Option<String>,
    pub children: Vec<String>,
    pub mount_time: u64,
}

Extended mount point information

MountPoint contains comprehensive information about a mounted filesystem, including metadata, mount options, and relationship information for hierarchical mount management.

Features

• Filesystem Integration: Direct reference to the mounted filesystem
• Mount Hierarchy: Parent/child relationships for mount tree management
• Security Options: Configurable mount options for access control
• Bind Mount Support: Resolves bind mount chains to actual filesystems
• Metadata Tracking: Mount time and filesystem identification

Thread Safety

MountPoint is designed to be shared safely between threads using Arc wrapper when stored in the mount tree.

Fields

path: String

Absolute mount path in the filesystem hierarchy

fs: FileSystemRef

Reference to the actual filesystem implementation

fs_id: usize

VfsManager-assigned filesystem identifier

mount_type: MountType

Type of mount (regular, bind, overlay)

mount_options: MountOptions

Security and behavior options for this mount

parent: Option<String>

Parent mount path (None for root mount)

children: Vec<String>

List of child mount paths

mount_time: u64

Timestamp when this mount was created

Implementations

impl MountPoint

pub fn resolve_fs(&self, relative_path: &str) -> Result<(FileSystemRef, String)>

Resolve filesystem and internal path from MountPoint

This method resolves bind mount chains to find the actual filesystem that handles the requested path. For regular mounts, it returns the filesystem directly. For bind mounts, it recursively follows the bind chain to the source filesystem.

Arguments

• relative_path - Path relative to this mount point

Returns

• Ok((FileSystemRef, String)) - The actual filesystem and the resolved path within it
• Err(FileSystemError) - If bind mount resolution fails or exceeds recursion limit

Note

This method only supports Regular, Tmpfs, and Overlay mounts. Bind mounts are resolved transparently to their source filesystems.

fn resolve_fs_with_depth( &self, relative_path: &str, depth: usize, ) -> Result<(FileSystemRef, String)>

Internal method for bind mount resolution with recursion depth tracking

This method prevents infinite recursion in circular bind mount chains by limiting the maximum recursion depth to 32 levels.

Arguments

• relative_path - Path relative to this mount point
• depth - Current recursion depth for loop detection

Returns

• Ok((FileSystemRef, String)) - The actual filesystem and resolved path
• Err(FileSystemError) - If recursion limit exceeded or resolution fails

Trait Implementations

impl Clone for MountPoint

fn clone(&self) -> MountPoint

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.