fcntl add F_GETPATH support for apple/netbsd/dragonfly

[devnexen]

No description provided.

[SteveLauC]

And, a changelog is needed

[SteveLauC]

Feel free to ping me when you think this is ready for the final review :)

[SteveLauC]

PR LGTM now, BTW, a change log is needed

[devnexen]

Yes I waited finishing the code first, still draft ;-)

[devnexen]

PR LGTM now, BTW, a change log is needed

Nice to see asomers found a good help ;-)

[asomers]

You'll have to raise MSRV to 1.69.0 do use CStr::from_byte_with_nul.

[SteveLauC]

You'll have to raise MSRV to 1.69.0 do use CStr::from_byte_with_nul.

The MSRV will be bumped in #2144 so @devnexen you don't need to worry about it in this PR :)

[SteveLauC]

You'll have to raise MSRV to 1.69.0 do use CStr::from_byte_with_nul.

The MSRV will be bumped in #2144 so @devnexen you don't need to worry about it in this PR :)

#2144 has been merged, @devnexen you can rebase now :)

[SteveLauC]

For the requested changes in test_fcntl.rs, would you like to resolve them? If so, I think this PR is good to be merged.

A test function similar to the following one would be good :)

#[cfg(any(
    target_os = "dragonfly",
    target_os = "netbsd",
    target_os = "macos",
    target_os = "ios"
))]
fn test_f_get_path() {
    use nix::fcntl::*;
    use std::{os::unix::io::AsRawFd, path::PathBuf};
    use tempfile::NamedTempFile;

    let tmp = NamedTempFile::new().unwrap();
    let fd = tmp.as_raw_fd();
    let mut path = PathBuf::new();
    let res =
        fcntl(fd, FcntlArg::F_GETPATH(&mut path)).expect("get path failed");
    assert_ne!(res, -1);
    assert_eq!(
        path.as_path().canonicalize().unwrap(),
        tmp.path().canonicalize().unwrap()
    );
}