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1 //
2 // Automated Testing Framework (atf)
3 //
4 // Copyright (c) 2008 The NetBSD Foundation, Inc.
5 // All rights reserved.
6 //
7 // Redistribution and use in source and binary forms, with or without
8 // modification, are permitted provided that the following conditions
9 // are met:
10 // 1. Redistributions of source code must retain the above copyright
11 //    notice, this list of conditions and the following disclaimer.
12 // 2. Redistributions in binary form must reproduce the above copyright
13 //    notice, this list of conditions and the following disclaimer in the
14 //    documentation and/or other materials provided with the distribution.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
17 // CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18 // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 // IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
21 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
23 // GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 // IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 // IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 //
29
30 extern "C" {
31 #include <sys/types.h>
32 #include <signal.h>
33 #include <unistd.h>
34 }
35
36 #include <cerrno>
37 #include <cstdlib>
38 #include <iostream>
39
40 #include "atf-c/defs.h"
41
42 #include "atf-c++/macros.hpp"
43
44 #include "atf-c++/detail/exceptions.hpp"
45 #include "atf-c++/detail/process.hpp"
46
47 #include "signals.hpp"
48
49 // ------------------------------------------------------------------------
50 // Auxiliary functions.
51 // ------------------------------------------------------------------------
52
53 namespace sigusr1 {
54     static bool happened = false;
55
56     static
57     void
58     handler(int signo ATF_DEFS_ATTRIBUTE_UNUSED)
59     {
60         happened = true;
61     }
62
63     static
64     void
65     program(void)
66     {
67         struct sigaction sa;
68         sa.sa_handler = handler;
69         sigemptyset(&sa.sa_mask);
70         sa.sa_flags = 0;
71         if (::sigaction(SIGUSR1, &sa, NULL) == -1)
72             throw atf::system_error("sigusr1::program",
73                                     "sigaction(2) failed", errno);
74     }
75 } // namespace sigusr1
76
77 namespace sigusr1_2 {
78     static bool happened = false;
79
80     static
81     void
82     handler(int signo ATF_DEFS_ATTRIBUTE_UNUSED)
83     {
84         happened = true;
85     }
86 } // namespace sigusr1_2
87
88 // ------------------------------------------------------------------------
89 // Tests for the "signal_holder" class.
90 // ------------------------------------------------------------------------
91
92 ATF_TEST_CASE(signal_holder_preserve);
93 ATF_TEST_CASE_HEAD(signal_holder_preserve)
94 {
95     set_md_var("descr", "Tests that signal_holder preserves the original "
96                "signal handler and restores it upon destruction");
97 }
98 ATF_TEST_CASE_BODY(signal_holder_preserve)
99 {
100     using atf::atf_run::signal_holder;
101
102     sigusr1::program();
103
104     sigusr1::happened = false;
105     ::kill(::getpid(), SIGUSR1);
106     ATF_REQUIRE(sigusr1::happened);
107
108     {
109         signal_holder hld(SIGUSR1);
110         ::kill(::getpid(), SIGUSR1);
111     }
112
113     sigusr1::happened = false;
114     ::kill(::getpid(), SIGUSR1);
115     ATF_REQUIRE(sigusr1::happened);
116 }
117
118 ATF_TEST_CASE(signal_holder_destructor);
119 ATF_TEST_CASE_HEAD(signal_holder_destructor)
120 {
121     set_md_var("descr", "Tests that signal_holder processes a pending "
122                "signal upon destruction");
123 }
124 ATF_TEST_CASE_BODY(signal_holder_destructor)
125 {
126     using atf::atf_run::signal_holder;
127
128     sigusr1::program();
129
130     sigusr1::happened = false;
131     ::kill(::getpid(), SIGUSR1);
132     ATF_REQUIRE(sigusr1::happened);
133
134     {
135         signal_holder hld(SIGUSR1);
136
137         sigusr1::happened = false;
138         ::kill(::getpid(), SIGUSR1);
139         ATF_REQUIRE(!sigusr1::happened);
140     }
141     ATF_REQUIRE(sigusr1::happened);
142 }
143
144 ATF_TEST_CASE(signal_holder_process);
145 ATF_TEST_CASE_HEAD(signal_holder_process)
146 {
147     set_md_var("descr", "Tests that signal_holder's process method works "
148                "to process a delayed signal explicitly");
149 }
150 ATF_TEST_CASE_BODY(signal_holder_process)
151 {
152     using atf::atf_run::signal_holder;
153
154     sigusr1::program();
155
156     sigusr1::happened = false;
157     ::kill(::getpid(), SIGUSR1);
158     ATF_REQUIRE(sigusr1::happened);
159
160     {
161         signal_holder hld(SIGUSR1);
162
163         sigusr1::happened = false;
164         ::kill(::getpid(), SIGUSR1);
165         ATF_REQUIRE(!sigusr1::happened);
166
167         hld.process();
168         ATF_REQUIRE(sigusr1::happened);
169
170         sigusr1::happened = false;
171     }
172     ATF_REQUIRE(!sigusr1::happened);
173 }
174
175 // ------------------------------------------------------------------------
176 // Tests for the "signal_programmer" class.
177 // ------------------------------------------------------------------------
178
179 ATF_TEST_CASE(signal_programmer_program);
180 ATF_TEST_CASE_HEAD(signal_programmer_program)
181 {
182     set_md_var("descr", "Tests that signal_programmer correctly installs a "
183                "handler");
184 }
185 ATF_TEST_CASE_BODY(signal_programmer_program)
186 {
187     using atf::atf_run::signal_programmer;
188
189     signal_programmer sp(SIGUSR1, sigusr1_2::handler);
190
191     sigusr1_2::happened = false;
192     ::kill(::getpid(), SIGUSR1);
193     ATF_REQUIRE(sigusr1_2::happened);
194 }
195
196 ATF_TEST_CASE(signal_programmer_preserve);
197 ATF_TEST_CASE_HEAD(signal_programmer_preserve)
198 {
199     set_md_var("descr", "Tests that signal_programmer uninstalls the "
200                "handler during destruction");
201 }
202 ATF_TEST_CASE_BODY(signal_programmer_preserve)
203 {
204     using atf::atf_run::signal_programmer;
205
206     sigusr1::program();
207     sigusr1::happened = false;
208
209     {
210         signal_programmer sp(SIGUSR1, sigusr1_2::handler);
211
212         sigusr1_2::happened = false;
213         ::kill(::getpid(), SIGUSR1);
214         ATF_REQUIRE(sigusr1_2::happened);
215     }
216
217     ATF_REQUIRE(!sigusr1::happened);
218     ::kill(::getpid(), SIGUSR1);
219     ATF_REQUIRE(sigusr1::happened);
220 }
221
222 // ------------------------------------------------------------------------
223 // Tests cases for the free functions.
224 // ------------------------------------------------------------------------
225
226 static
227 void
228 reset_child(void *v ATF_DEFS_ATTRIBUTE_UNUSED)
229 {
230     sigusr1::program();
231
232     sigusr1::happened = false;
233     atf::atf_run::reset(SIGUSR1);
234     kill(::getpid(), SIGUSR1);
235
236     if (sigusr1::happened) {
237         std::cerr << "Signal was not resetted correctly\n";
238         std::abort();
239     } else {
240         std::exit(EXIT_SUCCESS);
241     }
242 }
243
244 ATF_TEST_CASE(reset);
245 ATF_TEST_CASE_HEAD(reset)
246 {
247     set_md_var("descr", "Tests the reset function");
248 }
249 ATF_TEST_CASE_BODY(reset)
250 {
251     atf::process::child c =
252         atf::process::fork(reset_child, atf::process::stream_inherit(),
253                            atf::process::stream_inherit(), NULL);
254
255     const atf::process::status s = c.wait();
256     ATF_REQUIRE(s.exited() || s.signaled());
257     ATF_REQUIRE(!s.signaled() || s.termsig() == SIGUSR1);
258 }
259
260 // ------------------------------------------------------------------------
261 // Main.
262 // ------------------------------------------------------------------------
263
264 ATF_INIT_TEST_CASES(tcs)
265 {
266     // Add the tests for the "signal_holder" class.
267     ATF_ADD_TEST_CASE(tcs, signal_holder_preserve);
268     ATF_ADD_TEST_CASE(tcs, signal_holder_destructor);
269     ATF_ADD_TEST_CASE(tcs, signal_holder_process);
270
271     // Add the tests for the "signal_programmer" class.
272     ATF_ADD_TEST_CASE(tcs, signal_programmer_program);
273     ATF_ADD_TEST_CASE(tcs, signal_programmer_preserve);
274
275     // Add the test cases for the free functions.
276     ATF_ADD_TEST_CASE(tcs, reset);
277 }