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use std::convert::TryFrom;
#[test]
fn create_signalfd() {
use nix::sys::{signal::SigSet, signalfd::SignalFd};
let mask = SigSet::empty();
SignalFd::new(&mask).unwrap();
}
#[test]
fn create_signalfd_with_opts() {
use nix::sys::{
signal::SigSet,
signalfd::{SfdFlags, SignalFd},
};
let mask = SigSet::empty();
SignalFd::with_flags(&mask, SfdFlags::SFD_CLOEXEC | SfdFlags::SFD_NONBLOCK)
.unwrap();
}
#[test]
fn read_empty_signalfd() {
use nix::sys::{
signal::SigSet,
signalfd::{SfdFlags, SignalFd},
};
let mask = SigSet::empty();
let fd = SignalFd::with_flags(&mask, SfdFlags::SFD_NONBLOCK).unwrap();
let res = fd.read_signal();
assert!(res.unwrap().is_none());
}
#[test]
fn test_signalfd() {
use nix::sys::signal::{self, raise, SigSet, Signal};
use nix::sys::signalfd::SignalFd;
// Grab the mutex for altering signals so we don't interfere with other tests.
let _m = crate::SIGNAL_MTX.lock();
// Block the SIGUSR1 signal from automatic processing for this thread
let mut mask = SigSet::empty();
mask.add(signal::SIGUSR1);
mask.thread_block().unwrap();
let fd = SignalFd::new(&mask).unwrap();
// Send a SIGUSR1 signal to the current process. Note that this uses `raise` instead of `kill`
// because `kill` with `getpid` isn't correct during multi-threaded execution like during a
// cargo test session. Instead use `raise` which does the correct thing by default.
raise(signal::SIGUSR1).expect("Error: raise(SIGUSR1) failed");
// And now catch that same signal.
let res = fd.read_signal().unwrap().unwrap();
let signo = Signal::try_from(res.ssi_signo as i32).unwrap();
assert_eq!(signo, signal::SIGUSR1);
}
/// Update the signal mask of an already existing signalfd.
#[test]
fn test_signalfd_setmask() {
use nix::sys::signal::{self, raise, SigSet, Signal};
use nix::sys::signalfd::SignalFd;
// Grab the mutex for altering signals so we don't interfere with other tests.
let _m = crate::SIGNAL_MTX.lock();
// Block the SIGUSR1 signal from automatic processing for this thread
let mut mask = SigSet::empty();
let fd = SignalFd::new(&mask).unwrap();
mask.add(signal::SIGUSR1);
mask.thread_block().unwrap();
fd.set_mask(&mask).unwrap();
// Send a SIGUSR1 signal to the current process. Note that this uses `raise` instead of `kill`
// because `kill` with `getpid` isn't correct during multi-threaded execution like during a
// cargo test session. Instead use `raise` which does the correct thing by default.
raise(signal::SIGUSR1).expect("Error: raise(SIGUSR1) failed");
// And now catch that same signal.
let res = fd.read_signal().unwrap().unwrap();
let signo = Signal::try_from(res.ssi_signo as i32).unwrap();
assert_eq!(signo, signal::SIGUSR1);
}