datagram_socket/
lib.rs

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26
27mod datagram;
28mod shutdown;
29mod socket_stats;
30
31#[cfg(target_os = "linux")]
32#[macro_use]
33mod mmsg;
34
35pub use self::datagram::*;
36
37#[cfg(target_os = "linux")]
38pub use mmsg::*;
39
40#[cfg(unix)]
41use std::os::fd::AsRawFd;
42
43pub use self::shutdown::*;
44pub use self::socket_stats::*;
45
46#[cfg(target_os = "linux")]
47pub fn is_nonblocking(fd: &impl AsRawFd) -> std::io::Result<bool> {
48    let flags = unsafe { libc::fcntl(fd.as_raw_fd(), libc::F_GETFL) };
49
50    if flags == -1 {
51        return Err(std::io::Error::last_os_error());
52    }
53
54    if flags & libc::O_NONBLOCK != 0 {
55        Ok(true)
56    } else {
57        Ok(false)
58    }
59}
60
61#[cfg(all(unix, not(target_os = "linux")))]
62pub fn is_nonblocking(_fd: &impl AsRawFd) -> std::io::Result<bool> {
63    Ok(true)
64}
datagram_socket/lib.rs

datagram_socket/
lib.rs
