Vendor things

third-party/vendor/nix-0.24.3/test/sys/test_signalfd.rs

@@ -0,0 +1,27 @@
+use std::convert::TryFrom;
+
+#[test]
+fn test_signalfd() {
+    use nix::sys::signalfd::SignalFd;
+    use nix::sys::signal::{self, raise, Signal, SigSet};
+
+    // 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 mut 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);
+}