pub fn notify(unset_env: bool, state: &[NotifyState]) -> io::Result<()> {
    let socket_path = match env::var_os("NOTIFY_SOCKET") {
        Some(path) => path,
        None => return Ok(()),
    };
    if unset_env {
        env::remove_var("NOTIFY_SOCKET");
    }

    let mut msg = String::new();
    let sock = UnixDatagram::unbound()?;
    for s in state {
        let _ = writeln!(msg, "{}", s);
    }
    let len = sock.send_to(msg.as_bytes(), socket_path)?;
    if len != msg.len() {
        Err(io::Error::new(ErrorKind::WriteZero, "incomplete write"))
    } else {
        Ok(())
    }
}
/// Sends the service manager a list of state changes.
///
/// If the `unset_env` parameter is set, the `NOTIFY_SOCKET` environment variable
/// will be unset before returning. Further calls to `sd_notify` will fail, but
/// child processes will no longer inherit the variable.
///
/// The notification mechanism involves sending a datagram to a Unix domain socket.
/// See [`sd_notify(3)`][sd_notify] for details.
///
/// [sd_notify]: https://www.freedesktop.org/software/systemd/man/sd_notify.html
///
/// # Limitations
///
/// The implementation of this function is somewhat naive: it doesn't support
/// sending notifications on behalf of other processes, doesn't pass file
/// descriptors, doesn't send credentials, and does not increase the send
/// buffer size. It's still useful, though, in usual situations.
///
/// # Example
///
/// ```no_run
/// # use sd_notify::NotifyState;
/// #
/// let _ = sd_notify::notify(true, &[NotifyState::Ready]);
/// ```
Sends the service manager a list of state changes.
If the `unset_env` parameter is set, the `NOTIFY_SOCKET` environment variable
will be unset before returning. Further calls to `sd_notify` will fail, but
child processes will no longer inherit the variable.

The notification mechanism involves sending a datagram to a Unix domain socket.


Sends the service manager a list of state changes . If the ` unset_env ` parameter is set the ` NOTIFY_SOCKET ` environment variable will be unset before returning . Further calls to ` sd_notify ` will fail but child processes will no longer inherit the variable . The notification mechanism involves sending a datagram to a Unix domain socket .
pub fn notify(unset_env: bool, state: &[NotifyState]) -> io::Result<()> {
    let socket_path = match env::var_os("NOTIFY_SOCKET") {
        Some(path) => path,
        None => return Ok(()),
    };
    if unset_env {
        env::remove_var("NOTIFY_SOCKET");
    }
    let mut msg = String::new();
    let sock = UnixDatagram::unbound()?;
    for s in state {
        let _ = writeln!(msg, "{}", s);
    }
    let len = sock.send_to(msg.as_bytes(), socket_path)?;
    if len != msg.len() {
        Err(io::Error::new(ErrorKind::WriteZero, "incomplete write"))
    } else {
        Ok(())
    }
}
pub fn notify ( unset_env : bool , state : & [ NotifyState ] ) -> io :: Result < ( ) > { let socket_path = match env :: var_os ( " " ) { Some ( path ) => path , None => return Ok ( ( ) ) , } ; if unset_env { env :: remove_var ( " " ) ; } let mut msg = String :: new ( ) ; let sock = UnixDatagram :: unbound ( ) ? ; for s in state { let _ = writeln ! ( msg " " s ) ; } let len = sock . send_to ( msg . as_bytes ( ) , socket_path ) ? ; if len != msg . len ( ) { Err ( io :: Error :: new ( ErrorKind :: WriteZero , " " ) ) } else { Ok ( ( ) ) } }
Sends the service manager a list of state changes.
Sends the service manager a list of state changes .
unset_env
bool
state
&[NotifyState]
unset_env
bool
state
&[NotifyState]
limitations
The implementation of this function is somewhat naive: it doesn't support
sending notifications on behalf of other processes, doesn't pass file
descriptors, doesn't send credentials, and does not increase the send
buffer size. It's still useful, though, in usual situations.
The implementation of this function is somewhat naive : it doesn ' t support sending notifications on behalf of other processes doesn ' t pass file descriptors doesn ' t send credentials and does not increase the send buffer size . It ' s still useful though in usual situations .
example
None
use sd_notify::notifystate;
let _ = sd_notify::notify(true, &[NotifyState::Ready]);
```
let _ = sd_notify :: notify ( true & [ NotifyState :: Ready ] ) ; ` ` `