| # errno [](https://github.com/lambda-fairy/rust-errno/actions/workflows/main.yml) [](https://crates.io/crates/errno) |
| |
| Cross-platform interface to the [`errno`][errno] variable. Works on Rust 1.13 or newer. |
| |
| Documentation is available at <https://docs.rs/errno>. |
| |
| [errno]: https://en.wikipedia.org/wiki/Errno.h |
| |
| |
| ## Dependency |
| |
| Add to your `Cargo.toml`: |
| |
| ```toml |
| [dependencies] |
| errno = "*" |
| libc = "*" |
| ``` |
| |
| |
| ## Examples |
| |
| ```rust |
| extern crate errno; |
| use errno::{Errno, errno, set_errno}; |
| |
| // Get the current value of errno |
| let e = errno(); |
| |
| // Set the current value of errno |
| set_errno(e); |
| |
| // Extract the error code as an i32 |
| let code = e.0; |
| |
| // Display a human-friendly error message |
| println!("Error {}: {}", code, e); |
| ``` |
