Function std::source ·
🔬This is a nightly-only experimental API. (
Ok(true) if the path points at an existing entity.
This function will traverse symbolic links to query information about the
destination file. In case of broken symbolic links this will return
As opposed to the
Path::exists method, this one doesn’t silently ignore errors
unrelated to the path not existing. (E.g. it will return
Err(_) in case of permission
denied on some of the parent directories.)
Note that while this avoids some pitfalls of the
exists() method, it still can not
prevent time-of-check to time-of-use (TOCTOU) bugs. You should only use it in scenarios
where those bugs are not an issue.
#![feature(fs_try_exists)] use std::fs; assert!(!fs::try_exists("does_not_exist.txt").expect("Can't check existence of file does_not_exist.txt")); assert!(fs::try_exists("/root/secret_file.txt").is_err());