Struct netlink_packet_core::error::ErrorMessage

#[non_exhaustive]
pub struct ErrorMessage {
    pub code: Option<NonZeroI32>,
    pub header: Vec<u8>,
}

An NLMSG_ERROR message.

Per RFC 3549 section 2.3.2.2, this message carries the return code for a request which will indicate either success (an ACK) or failure (a NACK).

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

code: Option<NonZeroI32>

The error code.

Holds None when there is no error to report (the message is an ACK), or a Some(e) if there is a non-zero error code e to report (the message is a NACK).

See Netlink message types for details.

header: Vec<u8>

The original request’s header.

Implementations

impl ErrorMessage

pub fn raw_code(&self) -> i32

Returns the raw error code.

pub fn to_io(&self) -> Error

According to netlink(7) the NLMSG_ERROR return Negative errno or 0 for acknowledgements.

convert into std::io::Error using the absolute value from errno code

Trait Implementations

impl Clone for ErrorMessage

fn clone(&self) -> ErrorMessage

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ErrorMessage

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

Formats the value using the given formatter.

impl Default for ErrorMessage

fn default() -> ErrorMessage

Returns the “default value” for a type.

impl Display for ErrorMessage

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

Formats the value using the given formatter.

impl Emitable for ErrorMessage

fn buffer_len(&self) -> usize

Return the length of the serialized data.

fn emit(&self, buffer: &mut [u8])

Serialize this types and write the serialized data into the given buffer.

impl From<ErrorMessage> for Error

fn from(e: ErrorMessage) -> Error

Converts to this type from the input type.

impl<'buffer, T: AsRef<[u8]> + 'buffer> Parseable<ErrorBuffer<&'buffer T>> for ErrorMessage

type Error = DecodeError

fn parse(buf: &ErrorBuffer<&'buffer T>) -> Result<ErrorMessage, DecodeError>

Deserialize the current type.

impl PartialEq for ErrorMessage

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl Eq for ErrorMessage

impl StructuralPartialEq for ErrorMessage