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more rust, less libc

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Folkert 2022-05-22 14:33:30 +02:00
parent ddc67c2a19
commit b80b59125e
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1 changed files with 3 additions and 16 deletions
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19
cli/src/lib.rs
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@ -619,24 +619,11 @@ fn roc_run_executable_file_path(cwd: &Path, binary_bytes: &mut [u8]) -> std::io:
);
}
// NOTE: this `fd` is special, using the rust `std::fs::File` functions does not work
let written = unsafe { libc::write(fd, binary_bytes.as_ptr().cast(), binary_bytes.len()) };
let path = PathBuf::from(format!("/proc/self/fd/{}", fd));
if written == -1 {
internal_error!("libc::write() failed: {:?}", errno::errno());
}
std::fs::write(&path, binary_bytes)?;
if written != binary_bytes.len() as isize {
internal_error!(
"libc::write() did not write the correct number of bytes: reported {}, should be {}",
written,
binary_bytes.len(),
);
}
let path = format!("/proc/self/fd/{}", fd);
Ok(PathBuf::from(path))
Ok(path)
} else {
// we have not found a way yet to use a virtual file on MacOs. Hence we fall back to just
// writing the file to the file system, and using that file.