Struct Error

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

Expand description

Generic integer kernel error.

The kernel defines a set of integer generic error codes based on C and POSIX ones. These codes may have a more specific meaning in some contexts.

§Invariants

The value is a valid errno (i.e. >= -MAX_ERRNO && < 0).

Implementations§

impl Error

pub fn from_errno(errno: c_int) -> Error

Creates an Error from a kernel error code.

It is a bug to pass an out-of-range errno. EINVAL would be returned in such a case.

pub fn to_errno(self) -> c_int

Returns the kernel error code.

pub fn to_ptr<T>(self) -> *mut T

Returns the error encoded as a pointer.

pub fn name(&self) -> Option<&'static CStr>

Returns a string representing the error, if one exists.

Trait Implementations§

impl Clone for Error

fn clone(&self) -> Error

Returns a copy of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for Error

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

Formats the value using the given formatter. Read more

impl From<AllocError> for Error

fn from(_: AllocError) -> Error

Converts to this type from the input type.

impl From<BadFdError> for Error

fn from(_: BadFdError) -> Error

Converts to this type from the input type.

impl From<CStrConvertError> for Error

fn from(_: CStrConvertError) -> Error

Converts to this type from the input type.

impl From<Error> for Error

fn from(_: Error) -> Error

Converts to this type from the input type.

impl From<Infallible> for Error

fn from(e: Infallible) -> Error

Converts to this type from the input type.

impl From<LayoutError> for Error

fn from(_: LayoutError) -> Error

Converts to this type from the input type.

impl From<TryFromIntError> for Error

fn from(_: TryFromIntError) -> Error

Converts to this type from the input type.

impl From<Utf8Error> for Error

fn from(_: Utf8Error) -> Error

Converts to this type from the input type.

impl PartialEq for Error

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

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

1.0.0 · Source§

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 Copy for Error

impl Eq for Error

impl StructuralPartialEq for Error

Auto Trait Implementations§

impl Freeze for Error

impl RefUnwindSafe for Error

impl Send for Error

impl Sync for Error

impl Unpin for Error

impl UnwindSafe for Error

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut u8)

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

Performs copy-assignment from self to dst. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, E> Init<T, E> for T

unsafe fn __init(self, slot: *mut T) -> Result<(), E>

Initializes slot. Read more

fn chain<F>(self, f: F) -> ChainInit<Self, F, T, E>
where F: FnOnce(&mut T) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, E> PinInit<T, E> for T

unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), E>

Initializes slot. Read more

fn pin_chain<F>(self, f: F) -> ChainPinInit<Self, F, T, E>
where F: FnOnce(Pin<&mut T>) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.