openai/codex · error · io::Error

path `{}` is not a file

Error message

path `{}` is not a file

What it means

Error "path `{}` is not a file" thrown in openai/codex.

Source

Thrown at codex-rs/exec-server/src/regular_file.rs:12

use std::io;
use std::path::Path;
use tokio::io::AsyncReadExt;

pub(crate) async fn open(path: &Path) -> io::Result<tokio::fs::File> {
    let mut options = tokio::fs::OpenOptions::new();
    options.read(true);
    configure_open(&mut options);

    let file = options.open(path).await?;
    if !is_disk_file(&file) || !file.metadata().await?.is_file() {
        return Err(io::Error::new(
            io::ErrorKind::InvalidInput,
            format!("path `{}` is not a file", path.display()),
        ));
    }
    Ok(file)
}

/// Reads a regular UTF-8 file without following a symlink at its final path component.
pub async fn read_sensitive_file_to_string(path: &Path) -> io::Result<String> {
    let mut options = tokio::fs::OpenOptions::new();
    options.read(true);
    configure_open(&mut options);

    #[cfg(unix)]
    options.custom_flags(libc::O_NONBLOCK | libc::O_NOFOLLOW);

    #[cfg(windows)]
    {

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/exec-server/src/regular_file.rs:12 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/ccf608db66a27bca. Report an issue: GitHub.