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#![cfg(unix)]
#[cfg(target_os = "linux")]
use assay_common::get_inode_generation;
#[cfg(target_os = "linux")]
use std::os::unix::prelude::AsRawFd;
#[cfg(target_os = "linux")]
use tempfile::NamedTempFile;
#[test]
#[cfg(target_os = "linux")]
fn test_inode_generation_retrieval() {
// 1. Create a temp file
let temp_file = NamedTempFile::new().expect("Failed to create temp file");
let fd = temp_file.as_raw_fd();
// 2. Query generation
// Supported FS (ext4, xfs, etc): Returns Ok(gen).
// Unsupported (tmpfs, etc): May return ENOTTY or EOPNOTSUPP, or Ok(0).
//
// Since we don't know the runners FS type for /tmp, we check for
// "No Panic" + "Reasonable Result".
match get_inode_generation(fd) {
Ok(gen) => {
println!("Got generation: {}", gen);
// gen might be 0 on tmpfs or young files, that's fine.
}
Err(e) => {
// If the FS doesn't support it, we expect specific errors.
// On tmpfs, ioctl might fail with ENOTTY (25) or similar.
println!("Got error: {:?}", e);
if let Some(code) = e.raw_os_error() {
// ENOTTY means ioctl not supported on this file/fs.
if code == libc::ENOTTY || code == libc::EOPNOTSUPP {
println!("FS does not support generation ioctl (expected on tmpfs).");
} else {
panic!("Unexpected error querying generation: {:?}", e);
}
}
}
}
}