Enum FsError 

#[non_exhaustive]
pub enum FsError {
    NotFound,
    AlreadyExists,
    NotADirectory,
    IsADirectory,
    DirectoryNotEmpty,
    PermissionDenied,
    InvalidPath(&'static str),
    Unsupported {
        feature: Feature,
        reason: &'static str,
    },
    Io(String),
}

Why a file operation failed. Every backend reports the same variants for the same situation, so callers match on them rather than on OS codes.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

NotFound

AlreadyExists

NotADirectory

A path component that must be a directory is a file.

IsADirectory

The operation needs a file and the path names a directory.

DirectoryNotEmpty

PermissionDenied

InvalidPath(&'static str)

The path cannot be used for this operation, such as replacing the root of a Dir with a file.

Unsupported

This target, or this kind of Dir, cannot do it.

Fields

feature: Feature

reason: &'static str

Io(String)

Anything else, with the platform’s description.

Trait Implementations

impl Clone for FsError

fn clone(&self) -> FsError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FsError

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

Formats the value using the given formatter.

impl Display for FsError

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

Formats the value using the given formatter.

impl Error for FsError

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 FsError

fn from(error: Error) -> FsError

Converts to this type from the input type.

impl From<Unsupported<Feature>> for FsError

fn from(unsupported: Unsupported<Feature>) -> FsError

Converts to this type from the input type.

impl PartialEq for FsError

fn eq(&self, other: &FsError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for FsError

impl StructuralPartialEq for FsError