errno
Cross-platform interface to the errno
variable. Works on Rust 1.56 or newer.
Documentation is available at https://docs.rs/errno.
Dependency
Add to your Cargo.toml
:
[]
= "*"
Comparison with std::io::Error
The standard library provides Error::last_os_error
which fetches errno
in the same way.
This crate provides these extra features:
- No heap allocations
- Optional
#![no_std]
support - A
set_errno
function
Examples
extern crate errno;
use ;
// Get the current value of errno
let e = errno;
// Set the current value of errno
set_errno;
// Extract the error code as an i32
let code = e.0;
// Display a human-friendly error message
println!;
#![no_std]
Enable #![no_std]
support by disabling the default std
feature:
[]
= { = "*", = false }
The Error
impl will be unavailable.