Enum Error 

#[non_exhaustive]
#[repr(u16)]
pub enum Error {
    _Reserved = 0,
    InvalidUtf8 = 1,
    UnsupportedProtocol = 2,
    UnknownProtocol = 3,
    InvalidEndpoint = 4,
    NameInUse = 5,
    InvalidHandle = 6,
    Overflow = 7,
    InvalidPointer = 8,
    DeadServer = 9,
    InvalidReturn = 10,
    Invalid = 11,
    AllocationFailure = 12,
    InvalidArg = 13,
    AsyncUnsupported = 14,
    FutureCompat = 15,
    EndOfData = 16,
    ProtocolOverlap = 17,
    ConditionNotMet = 18,
    _MaxVal = 19,
}

Available on crate feature full only.

Types of error that can be returned from a syscall.

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.

_Reserved = 0

InvalidUtf8 = 1

String argument passed was malformed UTF-8.

UnsupportedProtocol = 2

Server or handle does not support requested protocol or method.

UnknownProtocol = 3

Unknown protocol or method.

InvalidEndpoint = 4

Requested endpoint name is invalid or does not exist.

NameInUse = 5

Requested endpoint name is already in use.

InvalidHandle = 6

Handle argument passed was invalid.

Overflow = 7

Too many open objects.

InvalidPointer = 8

Pointer argument passed was invalid.

DeadServer = 9

Server is no longer running.

InvalidReturn = 10

Incorrect return type for called method.

Invalid = 11

Generic error.

AllocationFailure = 12

Failed to allocate memory.

InvalidArg = 13

Argument passed is invalid.

AsyncUnsupported = 14

Requested method does not support being called asynchronously.

FutureCompat = 15

Passed argument value is reserved for future use.

EndOfData = 16

Object is not long enough for passed arguments.

ProtocolOverlap = 17

Protocol already exists on handle.

ConditionNotMet = 18

Condition required for method not met.

_MaxVal = 19

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 Copy for Error

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 Eq for Error

impl Error for Error

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<AllocError> for Error

fn from(_: AllocError) -> Self

Converts to this type from the input type.

impl From<Error> for AllocError

fn from(value: Error) -> Self

Converts to this type from the input type.

impl From<PointerError> for Error

fn from(_: PointerError) -> Self

Converts to this type from the input type.

impl From<u32> for Error

fn from(value: u32) -> Error

Converts to this type from the input type.

impl PartialEq for Error

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Error