1 #[cfg(not(target_os = "redox"))]
2 use nix::errno::Errno;
3 use nix::sys::signal::*;
4 use nix::unistd::*;
5 use std::convert::TryFrom;
6 use std::sync::atomic::{AtomicBool, Ordering};
7
8 #[test]
test_kill_none()9 fn test_kill_none() {
10 kill(getpid(), None).expect("Should be able to send signal to myself.");
11 }
12
13 #[test]
14 #[cfg(not(target_os = "fuchsia"))]
test_killpg_none()15 fn test_killpg_none() {
16 killpg(getpgrp(), None)
17 .expect("Should be able to send signal to my process group.");
18 }
19
20 #[test]
test_old_sigaction_flags()21 fn test_old_sigaction_flags() {
22 let _m = crate::SIGNAL_MTX.lock();
23
24 extern "C" fn handler(_: ::libc::c_int) {}
25 let act = SigAction::new(
26 SigHandler::Handler(handler),
27 SaFlags::empty(),
28 SigSet::empty(),
29 );
30 let oact = unsafe { sigaction(SIGINT, &act) }.unwrap();
31 let _flags = oact.flags();
32 let oact = unsafe { sigaction(SIGINT, &act) }.unwrap();
33 let _flags = oact.flags();
34 }
35
36 #[test]
test_sigprocmask_noop()37 fn test_sigprocmask_noop() {
38 sigprocmask(SigmaskHow::SIG_BLOCK, None, None)
39 .expect("this should be an effective noop");
40 }
41
42 #[test]
test_sigprocmask()43 fn test_sigprocmask() {
44 let _m = crate::SIGNAL_MTX.lock();
45
46 // This needs to be a signal that rust doesn't use in the test harness.
47 const SIGNAL: Signal = Signal::SIGCHLD;
48
49 let mut old_signal_set = SigSet::empty();
50 sigprocmask(SigmaskHow::SIG_BLOCK, None, Some(&mut old_signal_set))
51 .expect("expect to be able to retrieve old signals");
52
53 // Make sure the old set doesn't contain the signal, otherwise the following
54 // test don't make sense.
55 assert!(!old_signal_set.contains(SIGNAL),
56 "the {:?} signal is already blocked, please change to a \
57 different one", SIGNAL);
58
59 // Now block the signal.
60 let mut signal_set = SigSet::empty();
61 signal_set.add(SIGNAL);
62 sigprocmask(SigmaskHow::SIG_BLOCK, Some(&signal_set), None)
63 .expect("expect to be able to block signals");
64
65 // And test it again, to make sure the change was effective.
66 old_signal_set.clear();
67 sigprocmask(SigmaskHow::SIG_BLOCK, None, Some(&mut old_signal_set))
68 .expect("expect to be able to retrieve old signals");
69 assert!(old_signal_set.contains(SIGNAL),
70 "expected the {:?} to be blocked", SIGNAL);
71
72 // Reset the signal.
73 sigprocmask(SigmaskHow::SIG_UNBLOCK, Some(&signal_set), None)
74 .expect("expect to be able to block signals");
75 }
76
77 lazy_static! {
78 static ref SIGNALED: AtomicBool = AtomicBool::new(false);
79 }
80
test_sigaction_handler(signal: libc::c_int)81 extern fn test_sigaction_handler(signal: libc::c_int) {
82 let signal = Signal::try_from(signal).unwrap();
83 SIGNALED.store(signal == Signal::SIGINT, Ordering::Relaxed);
84 }
85
86 #[cfg(not(target_os = "redox"))]
test_sigaction_action(_: libc::c_int, _: *mut libc::siginfo_t, _: *mut libc::c_void)87 extern fn test_sigaction_action(_: libc::c_int, _: *mut libc::siginfo_t, _: *mut libc::c_void) {}
88
89 #[test]
90 #[cfg(not(target_os = "redox"))]
test_signal_sigaction()91 fn test_signal_sigaction() {
92 let _m = crate::SIGNAL_MTX.lock();
93
94 let action_handler = SigHandler::SigAction(test_sigaction_action);
95 assert_eq!(unsafe { signal(Signal::SIGINT, action_handler) }.unwrap_err(), Errno::ENOTSUP);
96 }
97
98 #[test]
test_signal()99 fn test_signal() {
100 let _m = crate::SIGNAL_MTX.lock();
101
102 unsafe { signal(Signal::SIGINT, SigHandler::SigIgn) }.unwrap();
103 raise(Signal::SIGINT).unwrap();
104 assert_eq!(unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap(), SigHandler::SigIgn);
105
106 let handler = SigHandler::Handler(test_sigaction_handler);
107 assert_eq!(unsafe { signal(Signal::SIGINT, handler) }.unwrap(), SigHandler::SigDfl);
108 raise(Signal::SIGINT).unwrap();
109 assert!(SIGNALED.load(Ordering::Relaxed));
110
111 #[cfg(not(any(target_os = "illumos", target_os = "solaris")))]
112 assert_eq!(unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap(), handler);
113
114 // System V based OSes (e.g. illumos and Solaris) always resets the
115 // disposition to SIG_DFL prior to calling the signal handler
116 #[cfg(any(target_os = "illumos", target_os = "solaris"))]
117 assert_eq!(unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap(), SigHandler::SigDfl);
118
119 // Restore default signal handler
120 unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap();
121 }
122