Struct MountTable 

pub struct MountTable { /* private fields */ }

Available on crate features code and embedded-python only.

A collection of mount points mapping virtual paths to host directories.

Mounts are checked in longest-prefix-first order so that more specific mounts take precedence.

Implementations

impl MountTable

pub fn new() -> MountTable

Creates a new empty mount table.

pub fn mount( &mut self, virtual_path: &str, host_path: impl AsRef<Path>, mode: MountMode, write_bytes_limit: Option<u64>, ) -> Result<(), MountError>

Adds a mount point mapping a virtual path to a host directory.

The host path is canonicalized at mount time so that all subsequent boundary checks compare canonical-to-canonical. Mount memory uses DEFAULT_MEMORY_USAGE_LIMIT unless a pre-built Mount overrides it.

Errors

Returns MountError::InvalidMount if the virtual path is not absolute, or the host path doesn’t exist or isn’t a directory.

pub fn push_mount(&mut self, mount: Mount)

Adds a pre-built Mount to the table.

Use this when a mount was validated before the table was assembled.

pub fn handle_os_call(&mut self, call: OsFunctionCall) -> MountCallOutcome

Handles an OS call using the mount table.

Consumes the call so a covered write’s payload is moved into the backend (overlay storage retains it without a copy). Routing happens on a borrow first, so MountCallOutcome::NotHandled hands the call back untouched for the caller’s fallback handler (a host callback or OsFunctionCall::on_no_handler).

pub fn is_empty(&self) -> bool

Returns true if no mount points are configured.

pub fn len(&self) -> usize

Returns the number of configured mount points.

Trait Implementations

impl Debug for MountTable

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

Formats the value using the given formatter.

impl Default for MountTable

fn default() -> MountTable

Returns the “default value” for a type.