pub enum Errno {
Show 80 variants Success, Toobig, Access, Addrinuse, Addrnotavail, Afnosupport, Again, Already, Badf, Badmsg, Busy, Canceled, Child, Connaborted, Connrefused, Connreset, Deadlk, Destaddrreq, Dom, Dquot, Exist, Fault, Fbig, Hostunreach, Idrm, Ilseq, Inprogress, Intr, Inval, Io, Isconn, Isdir, Loop, Mfile, Mlink, Msgsize, Multihop, Nametoolong, Netdown, Netreset, Netunreach, Nfile, Nobufs, Nodev, Noent, Noexec, Nolck, Nolink, Nomem, Nomsg, Noprotoopt, Nospc, Nosys, Notconn, Notdir, Notempty, Notrecoverable, Notsock, Notsup, Notty, Nxio, Overflow, Ownerdead, Perm, Pipe, Proto, Protonosupport, Prototype, Range, Rofs, Spipe, Srch, Stale, Timedout, Txtbsy, Xdev, Notcapable, Shutdown, Memviolation, Unknown,
}
Expand description

Error codes returned by functions. Not all of these error codes are returned by the functions provided by this API; some are used in higher-level library layers, and others are provided merely for alignment with POSIX.

Variants§

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Success

No error occurred. System call completed successfully.

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Toobig

Argument list too long.

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Access

Permission denied.

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Addrinuse

Address in use.

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Addrnotavail

Address not available.

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Afnosupport

Address family not supported.

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Again

Resource unavailable, or operation would block.

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Already

Connection already in progress.

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Badf

Bad file descriptor.

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Badmsg

Bad message.

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Busy

Device or resource busy.

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Canceled

Operation canceled.

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Child

No child processes.

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Connaborted

Connection aborted.

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Connrefused

Connection refused.

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Connreset

Connection reset.

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Deadlk

Resource deadlock would occur.

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Destaddrreq

Destination address required.

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Dom

Mathematics argument out of domain of function.

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Dquot

Reserved.

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Exist

File exists.

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Fault

Bad address.

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Fbig

File too large.

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Hostunreach

Host is unreachable.

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Idrm

Identifier removed.

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Ilseq

Illegal byte sequence.

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Inprogress

Operation in progress.

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Intr

Interrupted function.

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Inval

Invalid argument.

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Io

I/O error.

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Isconn

Socket is connected.

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Isdir

Is a directory.

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Loop

Too many levels of symbolic links.

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Mfile

File descriptor value too large.

Too many links.

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Msgsize

Message too large.

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Multihop

Reserved.

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Nametoolong

Filename too long.

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Netdown

Network is down.

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Netreset

Connection aborted by network.

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Netunreach

Network unreachable.

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Nfile

Too many files open in system.

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Nobufs

No buffer space available.

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Nodev

No such device.

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Noent

No such file or directory.

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Noexec

Executable file format error.

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Nolck

No locks available.

Reserved.

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Nomem

Not enough space.

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Nomsg

No message of the desired type.

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Noprotoopt

Protocol not available.

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Nospc

No space left on device.

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Nosys

Function not supported.

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Notconn

The socket is not connected.

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Notdir

Not a directory or a symbolic link to a directory.

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Notempty

Directory not empty.

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Notrecoverable

State not recoverable.

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Notsock

Not a socket.

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Notsup

Not supported, or operation not supported on socket.

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Notty

Inappropriate I/O control operation.

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Nxio

No such device or address.

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Overflow

Value too large to be stored in data type.

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Ownerdead

Previous owner died.

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Perm

Operation not permitted.

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Pipe

Broken pipe.

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Proto

Protocol error.

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Protonosupport

Protocol not supported.

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Prototype

Protocol wrong type for socket.

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Range

Result too large.

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Rofs

Read-only file system.

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Spipe

Invalid seek.

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Srch

No such process.

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Stale

Reserved.

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Timedout

Connection timed out.

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Txtbsy

Text file busy.

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Xdev

Cross-device link.

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Notcapable

Extension: Capabilities insufficient.

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Shutdown

Cannot send after socket shutdown.

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Memviolation

Memory access violation.

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Unknown

An unknown error has occured

Implementations§

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impl Errno

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pub fn name(&self) -> &'static str

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pub fn message(&self) -> &'static str

Trait Implementations§

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impl Clone for Errno

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fn clone(&self) -> Errno

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
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impl Debug for Errno

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

Formats the value using the given formatter. Read more
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impl Display for Errno

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

Formats the value using the given formatter. Read more
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impl Error for Errno

1.30.0 · source§

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

The lower-level source of this error, if any. Read more
1.0.0 · source§

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
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fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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fn provide<'a>(&'a self, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type based access to context intended for error reports. Read more
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impl From<Errno> for ExitCode

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fn from(val: Errno) -> ExitCode

Converts to this type from the input type.
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impl From<Error> for Errno

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fn from(err: Error) -> Errno

Converts to this type from the input type.
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impl From<ExitCode> for Errno

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fn from(code: ExitCode) -> Errno

Converts to this type from the input type.
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impl From<WasiThreadError> for Errno

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fn from(a: WasiThreadError) -> Errno

Converts to this type from the input type.
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impl FromToNativeWasmType for Errno

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type Native = i32

Native Wasm type.
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fn to_native(self) -> <Errno as FromToNativeWasmType>::Native

Convert self to Self::Native. Read more
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fn from_native(n: <Errno as FromToNativeWasmType>::Native) -> Errno

Convert a value of kind Self::Native to Self. Read more
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fn is_from_store(&self, _store: &impl AsStoreRef) -> bool

Returns whether the given value is from the given store. Read more
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impl Hash for Errno

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fn hash<__H>(&self, state: &mut __H)where __H: Hasher,

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for Errno

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fn cmp(&self, other: &Errno) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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impl PartialEq<Errno> for Errno

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd<Errno> for Errno

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fn partial_cmp(&self, other: &Errno) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

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

This method tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

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

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

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

This method tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

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

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl ValueType for Errno

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fn zero_padding_bytes(&self, _bytes: &mut [MaybeUninit<u8>])

This method is passed a byte slice which contains the byte representation of self. It must zero out any bytes which are uninitialized (e.g. padding bytes).
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impl Copy for Errno

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impl Eq for Errno

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impl StructuralEq for Errno

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impl StructuralPartialEq for Errno

Auto Trait Implementations§

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impl RefUnwindSafe for Errno

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impl Send for Errno

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impl Sync for Errno

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impl Unpin for Errno

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impl UnwindSafe for Errno

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> ArchivePointee for T

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CallHasher for Twhere T: Hash + ?Sized,

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default fn get_hash<H, B>(value: &H, build_hasher: &B) -> u64where H: Hash + ?Sized, B: BuildHasher,

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impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere W: DeserializeWith<F, T, D>, D: Fallible + ?Sized, F: ?Sized,

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fn deserialize( &self, deserializer: &mut D ) -> Result<With<T, W>, <D as Fallible>::Error>

Deserializes using the given deserializer
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impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> Error for Twhere T: Error + 'static,

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fn as_error(&self) -> &(dyn Error + 'static)

Gets this error as an std::error::Error.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> LayoutRaw for T

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fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

Gets the layout of the type.
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impl<T> Pointee for T

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type Metadata = ()

The type for metadata in pointers and references to Self.
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impl<E> Provider for Ewhere E: Error + ?Sized,

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fn provide<'a>(&'a self, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (provide_any)
Data providers should implement this method to provide all values they are able to provide by using demand. Read more
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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for Twhere T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> Upcastable for Twhere T: Any + Debug + 'static,

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fn upcast_any_ref(&self) -> &(dyn Any + 'static)

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fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)

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fn upcast_any_box(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

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impl<T> Upcastable for Twhere T: Any + Send + Sync + 'static,

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fn upcast_any_ref(&self) -> &(dyn Any + 'static)

upcast ref
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fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)

upcast mut ref
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fn upcast_any_box(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

upcast boxed dyn
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<A1> WasmTypeList for A1where A1: FromToNativeWasmType,

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type CStruct = S1<A1>

The C type (a struct) that can hold/represent all the represented values.
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type Array = [RawValue; 1]

The array type that can hold all the represented values. Read more
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fn size() -> u32

The size of the array
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unsafe fn from_array( _store: &mut impl AsStoreMut, array: <A1 as WasmTypeList>::Array ) -> A1

Constructs Self based on an array of values. Read more
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unsafe fn from_slice( store: &mut impl AsStoreMut, slice: &[RawValue] ) -> Result<A1, TryFromSliceError>

Constructs Self based on a slice of values. Read more
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unsafe fn into_array( self, _store: &mut impl AsStoreMut ) -> <A1 as WasmTypeList>::Array

Builds and returns an array of type Array from a tuple (list) of values. Read more
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fn empty_array() -> <A1 as WasmTypeList>::Array

Allocates and return an empty array of type Array that will hold a tuple (list) of values, usually to hold the returned values of a WebAssembly function call.
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unsafe fn from_c_struct( _store: &mut impl AsStoreMut, c_struct: <A1 as WasmTypeList>::CStruct ) -> A1

Builds a tuple (list) of values from a C struct of type CStruct. Read more
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unsafe fn into_c_struct( self, _store: &mut impl AsStoreMut ) -> <A1 as WasmTypeList>::CStruct

Builds and returns a C struct of type CStruct from a tuple (list) of values. Read more
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unsafe fn write_c_struct_to_ptr( c_struct: <A1 as WasmTypeList>::CStruct, _ptr: *mut RawValue )

Writes the contents of a C struct to an array of RawValue. Read more
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fn wasm_types() -> &'static [Type]

Get the Wasm types for the tuple (list) of currently represented values.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more