Enum SysErr 

pub enum SysErr {
    Ret(isize),
    Arg(ErrorMessage),
}

Available on Unix and crate feature sys-syscall and crate feature sys-unix and crate feature sys only.

裸系统调用封装的错误类型。

Feature Requirement

需要启用 "sys-unix" 特性。

Variants

Ret(isize)

操作系统返回的错误码 (errno)

Arg(ErrorMessage)

参数错误

Trait Implementations

impl Clone for SysErr

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SysErr

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

Formats the value using the given formatter.

impl Display for SysErr

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

Formats the value using the given formatter.

impl Error for SysErr

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.