openai/codex · error · io::Error

no-follow filesystem operations require a local disk or UNC

Error message

no-follow filesystem operations require a local disk or UNC path

What it means

Error "no-follow filesystem operations require a local disk or UNC path" thrown in openai/codex.

Source

Thrown at codex-rs/exec-server/src/no_follow/windows.rs:93

    ) -> NTSTATUS;
}

fn nt_path(path: &Path) -> io::Result<Vec<u16>> {
    if !path.is_absolute() {
        return Err(io::Error::new(
            io::ErrorKind::InvalidInput,
            "no-follow filesystem operations require an absolute path",
        ));
    }

    let (prefix, source_offset) = match path.components().next() {
        Some(Component::Prefix(prefix)) => match prefix.kind() {
            Prefix::Disk(_) => ("\\??\\", 0),
            Prefix::VerbatimDisk(_) => ("\\??\\", 4),
            Prefix::UNC(_, _) => ("\\??\\UNC\\", 2),
            Prefix::VerbatimUNC(_, _) => ("\\??\\UNC\\", 8),
            _ => {
                return Err(io::Error::new(
                    io::ErrorKind::InvalidInput,
                    "no-follow filesystem operations require a local disk or UNC path",
                ));
            }
        },
        _ => {
            return Err(io::Error::new(
                io::ErrorKind::InvalidInput,
                "no-follow filesystem operations require an absolute Windows path",
            ));
        }
    };

    let mut result: Vec<u16> = OsStr::new(prefix).encode_wide().collect();
    result.extend(
        path.as_os_str()
            .encode_wide()
            .skip(source_offset)

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/exec-server/src/no_follow/windows.rs:93 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/46870f41b816dc93. Report an issue: GitHub.