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use std::fs::File;
use io_lifetimes::{FromFd, IntoFd};
use rustix::fs::{cwd, openat, Mode, OFlags};
use std::io::Write;
#[test]
fn test_openat_tmpfile() {
let tmp = tempfile::tempdir().unwrap();
let dir = openat(
cwd(),
tmp.path(),
OFlags::RDONLY | OFlags::CLOEXEC,
Mode::empty(),
)
.unwrap();
let f = match openat(
&dir,
".",
OFlags::WRONLY | OFlags::CLOEXEC | OFlags::TMPFILE,
Mode::from_bits_truncate(0o644),
) {
Ok(f) => Ok(Some(File::from_fd(f.into_fd()))),
// TODO: Factor out the `Err`, once we no longer support Rust 1.48.
Err(rustix::io::Errno::OPNOTSUPP)
| Err(rustix::io::Errno::ISDIR)
| Err(rustix::io::Errno::NOENT) => Ok(None),
Err(e) => Err(e),
};
if let Some(mut f) = f.unwrap() {
write!(f, "hello world").unwrap();
}
}
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