faccess

Basic file accessibility checks for Rust.

Synopsis

```rust use std::path::Path; use faccess::PathExt;

let path = Path::new("/bin/ls"); assert!(path.readable()); assert!(!path.writable()); assert!(path.executable()); ```

On Unix, this uses [faccessat(2)] with AT_EACCESS to check against the effective user and group ID's, on other platforms it simply proxies to exists() and readonly() as appropriate.

Caveats

Beware not to introduce any serious time-of-check to time-of-use ([TOCTOU]) bugs with these functions. They are strictly best-effort and are absolutely not alternatives to checking to see if opening a file or launching a program actually succeeded.