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!(
56 !old_signal_set.contains(SIGNAL),
57 "the {:?} signal is already blocked, please change to a \
58 different one",
59 SIGNAL
60 );
61
62 // Now block the signal.
63 let mut signal_set = SigSet::empty();
64 signal_set.add(SIGNAL);
65 sigprocmask(SigmaskHow::SIG_BLOCK, Some(&signal_set), None)
66 .expect("expect to be able to block signals");
67
68 // And test it again, to make sure the change was effective.
69 old_signal_set.clear();
70 sigprocmask(SigmaskHow::SIG_BLOCK, None, Some(&mut old_signal_set))
71 .expect("expect to be able to retrieve old signals");
72 assert!(
73 old_signal_set.contains(SIGNAL),
74 "expected the {:?} to be blocked",
75 SIGNAL
76 );
77
78 // Reset the signal.
79 sigprocmask(SigmaskHow::SIG_UNBLOCK, Some(&signal_set), None)
80 .expect("expect to be able to block signals");
81 }
82
83 lazy_static! {
84 static ref SIGNALED: AtomicBool = AtomicBool::new(false);
85 }
86
test_sigaction_handler(signal: libc::c_int)87 extern "C" fn test_sigaction_handler(signal: libc::c_int) {
88 let signal = Signal::try_from(signal).unwrap();
89 SIGNALED.store(signal == Signal::SIGINT, Ordering::Relaxed);
90 }
91
92 #[cfg(not(target_os = "redox"))]
test_sigaction_action( _: libc::c_int, _: *mut libc::siginfo_t, _: *mut libc::c_void, )93 extern "C" fn test_sigaction_action(
94 _: libc::c_int,
95 _: *mut libc::siginfo_t,
96 _: *mut libc::c_void,
97 ) {
98 }
99
100 #[test]
101 #[cfg(not(target_os = "redox"))]
test_signal_sigaction()102 fn test_signal_sigaction() {
103 let _m = crate::SIGNAL_MTX.lock();
104
105 let action_handler = SigHandler::SigAction(test_sigaction_action);
106 assert_eq!(
107 unsafe { signal(Signal::SIGINT, action_handler) }.unwrap_err(),
108 Errno::ENOTSUP
109 );
110 }
111
112 #[test]
test_signal()113 fn test_signal() {
114 let _m = crate::SIGNAL_MTX.lock();
115
116 unsafe { signal(Signal::SIGINT, SigHandler::SigIgn) }.unwrap();
117 raise(Signal::SIGINT).unwrap();
118 assert_eq!(
119 unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap(),
120 SigHandler::SigIgn
121 );
122
123 let handler = SigHandler::Handler(test_sigaction_handler);
124 assert_eq!(
125 unsafe { signal(Signal::SIGINT, handler) }.unwrap(),
126 SigHandler::SigDfl
127 );
128 raise(Signal::SIGINT).unwrap();
129 assert!(SIGNALED.load(Ordering::Relaxed));
130
131 #[cfg(not(any(target_os = "illumos", target_os = "solaris")))]
132 assert_eq!(
133 unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap(),
134 handler
135 );
136
137 // System V based OSes (e.g. illumos and Solaris) always resets the
138 // disposition to SIG_DFL prior to calling the signal handler
139 #[cfg(any(target_os = "illumos", target_os = "solaris"))]
140 assert_eq!(
141 unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap(),
142 SigHandler::SigDfl
143 );
144
145 // Restore default signal handler
146 unsafe { signal(Signal::SIGINT, SigHandler::SigDfl) }.unwrap();
147 }
148