1 use libc;
2 #[cfg(not(target_os = "redox"))]
3 use nix::Error;
4 use nix::sys::signal::*;
5 use nix::unistd::*;
6 use std::convert::TryFrom;
7 use std::sync::atomic::{AtomicBool, Ordering};
8
9 #[test]
test_kill_none()10 fn test_kill_none() {
11 kill(getpid(), None).expect("Should be able to send signal to myself.");
12 }
13
14 #[test]
15 #[cfg(not(target_os = "fuchsia"))]
test_killpg_none()16 fn test_killpg_none() {
17 killpg(getpgrp(), None)
18 .expect("Should be able to send signal to my process group.");
19 }
20
21 #[test]
test_old_sigaction_flags()22 fn test_old_sigaction_flags() {
23 let _m = crate::SIGNAL_MTX.lock().expect("Mutex got poisoned by another test");
24
25 extern "C" fn handler(_: ::libc::c_int) {}
26 let act = SigAction::new(
27 SigHandler::Handler(handler),
28 SaFlags::empty(),
29 SigSet::empty(),
30 );
31 let oact = unsafe { sigaction(SIGINT, &act) }.unwrap();
32 let _flags = oact.flags();
33 let oact = unsafe { sigaction(SIGINT, &act) }.unwrap();
34 let _flags = oact.flags();
35 }
36
37 #[test]
test_sigprocmask_noop()38 fn test_sigprocmask_noop() {
39 sigprocmask(SigmaskHow::SIG_BLOCK, None, None)
40 .expect("this should be an effective noop");
41 }
42
43 #[test]
test_sigprocmask()44 fn test_sigprocmask() {
45 let _m = crate::SIGNAL_MTX.lock().expect("Mutex got poisoned by another test");
46
47 // This needs to be a signal that rust doesn't use in the test harness.
48 const SIGNAL: Signal = Signal::SIGCHLD;
49
50 let mut old_signal_set = SigSet::empty();
51 sigprocmask(SigmaskHow::SIG_BLOCK, None, Some(&mut old_signal_set))
52 .expect("expect to be able to retrieve old signals");
53
54 // Make sure the old set doesn't contain the signal, otherwise the following
55 // test don't make sense.
56 assert_eq!(old_signal_set.contains(SIGNAL), false,
57 "the {:?} signal is already blocked, please change to a \
58 different one", SIGNAL);
59
60 // Now block the signal.
61 let mut signal_set = SigSet::empty();
62 signal_set.add(SIGNAL);
63 sigprocmask(SigmaskHow::SIG_BLOCK, Some(&signal_set), None)
64 .expect("expect to be able to block signals");
65
66 // And test it again, to make sure the change was effective.
67 old_signal_set.clear();
68 sigprocmask(SigmaskHow::SIG_BLOCK, None, Some(&mut old_signal_set))
69 .expect("expect to be able to retrieve old signals");
70 assert_eq!(old_signal_set.contains(SIGNAL), true,
71 "expected the {:?} to be blocked", SIGNAL);
72
73 // Reset the signal.
74 sigprocmask(SigmaskHow::SIG_UNBLOCK, Some(&signal_set), None)
75 .expect("expect to be able to block signals");
76 }
77
78 lazy_static! {
79 static ref SIGNALED: AtomicBool = AtomicBool::new(false);
80 }
81
test_sigaction_handler(signal: libc::c_int)82 extern fn test_sigaction_handler(signal: libc::c_int) {
83 let signal = Signal::try_from(signal).unwrap();
84 SIGNALED.store(signal == Signal::SIGINT, Ordering::Relaxed);
85 }
86
87 #[cfg(not(target_os = "redox"))]
test_sigaction_action(_: libc::c_int, _: *mut libc::siginfo_t, _: *mut libc::c_void)88 extern fn test_sigaction_action(_: libc::c_int, _: *mut libc::siginfo_t, _: *mut libc::c_void) {}
89
90 #[test]
91 #[cfg(not(target_os = "redox"))]
test_signal_sigaction()92 fn test_signal_sigaction() {
93 let _m = crate::SIGNAL_MTX.lock().expect("Mutex got poisoned by another test");
94
95 let action_handler = SigHandler::SigAction(test_sigaction_action);
96 assert_eq!(unsafe { signal(Signal::SIGINT, action_handler) }.unwrap_err(), Error::UnsupportedOperation);
97 }
98
99 #[test]
test_signal()100 fn test_signal() {
101 let _m = crate::SIGNAL_MTX.lock().expect("Mutex got poisoned by another test");
102
103 unsafe { signal(Signal::SIGINT, SigHandler::SigIgn) }.unwrap();
104 raise(Signal::SIGINT).unwrap();
105 assert_eq!(unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap(), SigHandler::SigIgn);
106
107 let handler = SigHandler::Handler(test_sigaction_handler);
108 assert_eq!(unsafe { signal(Signal::SIGINT, handler) }.unwrap(), SigHandler::SigDfl);
109 raise(Signal::SIGINT).unwrap();
110 assert!(SIGNALED.load(Ordering::Relaxed));
111 assert_eq!(unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap(), handler);
112
113 // Restore default signal handler
114 unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap();
115 }
116