Enum ContainError 

pub enum ContainError {
    Escape,
    EmbeddedNul,
    UnsupportedPrefix,
    Disabled,
    ReadOnly(Arc<str>),
    MountPoint(Arc<str>),
    Io(Error),
}

Failure resolving or operating on a guest path under containment.

Deliberately distinct from ResolveError, which covers only the lexical pass. Once a path is being opened, an escape is something the kernel (or cap-primitives) reports, and it must not arrive at the stdlib boundary as a bare io::Error that a call site might format as “permission denied”.

Variants

Escape

The path leaves the VFS root — lexically, or through a symlink cap-std refused.

EmbeddedNul

UnsupportedPrefix

Disabled

The VFS backs no directory (vfs: none).

ReadOnly(Arc<str>)

The path lives in a volume mounted read-only; carries its mount point.

MountPoint(Arc<str>)

The change would remove, replace or write through a mount point; carries the mount point.

Io(Error)

A genuine filesystem failure that is not an escape.

Trait Implementations

impl Debug for ContainError

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

Formats the value using the given formatter.

impl Display for ContainError

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

Formats the value using the given formatter.

impl Error for ContainError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for ContainError

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<ResolveError> for ContainError

fn from(err: ResolveError) -> Self

Converts to this type from the input type.