Function resolve_at

api/src/file/fs.rs:51–76

(dirfd: c_int, path: Option<&str>, flags: u32)

}

pub fn resolve_at(dirfd: c_int, path: Option<&str>, flags: u32) -> AxResult<ResolveAtResult> {
    match path {
        Some("") | None => {
            if flags & AT_EMPTY_PATH == 0 {
                return Err(AxError::NotFound);
            }
            let file_like = get_file_like(dirfd)?;
            let f = file_like.clone();
            Ok(if let Some(file) = f.downcast_ref::<File>() {
                ResolveAtResult::File(file.inner().backend()?.location().clone())
            } else if let Some(dir) = f.downcast_ref::<Directory>() {
                ResolveAtResult::File(dir.inner().clone())
            } else {
                ResolveAtResult::Other(file_like)
            })
        }
        Some(path) => with_fs(dirfd, |fs| {
            if flags & AT_SYMLINK_NOFOLLOW != 0 {
                fs.resolve_no_follow(path)
            } else {
                fs.resolve(path)
            }
            .map(ResolveAtResult::File)
        }),
    }
}

pub fn metadata_to_kstat(metadata: &Metadata) -> Kstat {
    let ty = metadata.node_type as u8;