jD91mZM2
39 lines
1.1 KiB
Rust
39 lines
1.1 KiB
Rust
extern crate syscall;
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use std::{
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fs::File,
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io::{self, prelude::*},
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os::unix::io::{AsRawFd, FromRawFd}
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};
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fn from_syscall_error(error: syscall::Error) -> io::Error {
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io::Error::from_raw_os_error(error.errno as i32)
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}
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fn main() -> io::Result<()> {
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let mut buf = [0; 5];
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let server = File::create("chan:")?;
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let client = syscall::dup(server.as_raw_fd(), b"connect").map_err(from_syscall_error)?;
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let mut client = unsafe { File::from_raw_fd(client) };
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let stream = syscall::dup(server.as_raw_fd(), b"listen").map_err(from_syscall_error)?;
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let mut stream = unsafe { File::from_raw_fd(stream) };
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println!("Testing basic I/O...");
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stream.write(b"abc")?;
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stream.flush()?;
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println!("-> Wrote message");
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assert_eq!(client.read(&mut buf)?, 3);
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assert_eq!(&buf[..3], b"abc");
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println!("-> Read message");
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println!("Testing connecting to unnamed socket by name (makes no sense)...");
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assert_eq!(File::open("chan:").unwrap_err().kind(), io::ErrorKind::NotFound);
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println!("Everything tested!");
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Ok(())
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}
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