Struct Error

pub struct Error(/* private fields */);

An error returned by a system call.

Implementations

impl Error

pub const fn from_code(code: u16) -> Self

Creates a new error from an error code.

Panics

Panics if the code is not between 1 and MAX_ERRNO, inclusive.

pub const fn value(&self) -> i16

Returns the error value.

Unlike the errno variable in C, this value is negative as it reflects the return value of a system call. It will always be between -MAX_ERRNO and -1, inclusive.

pub const fn code(&self) -> u16

Returns the error code.

The error code is the opposite of the error value. It will always be between 1 and MAX_ERRNO, inclusive.

pub const fn description(&self) -> Option<&'static str>

Returns a textual description of the error.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl PartialEq for Error

fn eq(&self, other: &Error) -> 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 TryFrom<i16> for Error

type Error = ()

The type returned in the event of a conversion error.

fn try_from(value: i16) -> CoreResult<Self, Self::Error>

Performs the conversion.

impl TryFrom<i32> for Error

type Error = ()

The type returned in the event of a conversion error.

fn try_from(value: i32) -> CoreResult<Self, Self::Error>

Performs the conversion.

impl TryFrom<isize> for Error

type Error = ()

The type returned in the event of a conversion error.

fn try_from(value: isize) -> CoreResult<Self, Self::Error>

Performs the conversion.

impl TryFrom<u16> for Error

type Error = ()

The type returned in the event of a conversion error.

fn try_from(value: u16) -> CoreResult<Self, Self::Error>

Performs the conversion.

impl TryFrom<u32> for Error

type Error = ()

The type returned in the event of a conversion error.

fn try_from(value: u32) -> CoreResult<Self, Self::Error>

Performs the conversion.

impl TryFrom<usize> for Error

type Error = ()

The type returned in the event of a conversion error.

fn try_from(value: usize) -> CoreResult<Self, Self::Error>

Performs the conversion.

impl Copy for Error

impl Eq for Error

impl StructuralPartialEq for Error