1// Copyright 2010 The Kyua Authors.
2// All rights reserved.
3//
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28
29#include "utils/signals/misc.hpp"
30
31extern "C" {
32#include <signal.h>
33#include <unistd.h>
34}
35
36#include <cstdlib>
37
38#include <atf-c++.hpp>
39
40#include "utils/defs.hpp"
41#include "utils/fs/path.hpp"
42#include "utils/process/child.ipp"
43#include "utils/process/status.hpp"
44#include "utils/signals/exceptions.hpp"
45
46namespace fs = utils::fs;
47namespace process = utils::process;
48namespace signals = utils::signals;
49
50
51namespace {
52
53
54static void program_reset_raise(void) UTILS_NORETURN;
55
56
57/// Body of a subprocess that tests the signals::reset function.
58///
59/// This function programs a signal to be ignored, then uses signal::reset to
60/// bring it back to its default handler and then delivers the signal to self.
61/// The default behavior of the signal is for the process to die, so this
62/// function should never return correctly (and thus the child process should
63/// always die due to a signal if all goes well).
64static void
65program_reset_raise(void)
66{
67    struct ::sigaction sa;
68    sa.sa_handler = SIG_IGN;
69    sigemptyset(&sa.sa_mask);
70    sa.sa_flags = 0;
71    if (::sigaction(SIGUSR1, &sa, NULL) == -1)
72        std::exit(EXIT_FAILURE);
73
74    signals::reset(SIGUSR1);
75    ::kill(::getpid(), SIGUSR1);
76
77    // Should not be reached, but we do not assert this condition because we
78    // want to exit cleanly if the signal does not abort our execution to let
79    // the parent easily know what happened.
80    std::exit(EXIT_SUCCESS);
81}
82
83
84/// Body of a subprocess that executes the signals::reset_all function.
85///
86/// The process exits with success if the function worked, or with a failure if
87/// an error is reported.  No signals are tested.
88static void
89run_reset_all(void)
90{
91    const bool ok = signals::reset_all();
92    std::exit(ok ? EXIT_SUCCESS : EXIT_FAILURE);
93}
94
95
96}  // anonymous namespace
97
98
99ATF_TEST_CASE_WITHOUT_HEAD(reset__ok);
100ATF_TEST_CASE_BODY(reset__ok)
101{
102    std::auto_ptr< process::child > child = process::child::fork_files(
103        program_reset_raise, fs::path("/dev/stdout"), fs::path("/dev/stderr"));
104    process::status status = child->wait();
105    ATF_REQUIRE(status.signaled());
106    ATF_REQUIRE_EQ(SIGUSR1, status.termsig());
107}
108
109
110ATF_TEST_CASE_WITHOUT_HEAD(reset__invalid);
111ATF_TEST_CASE_BODY(reset__invalid)
112{
113    ATF_REQUIRE_THROW(signals::system_error, signals::reset(-1));
114}
115
116
117ATF_TEST_CASE_WITHOUT_HEAD(reset_all);
118ATF_TEST_CASE_BODY(reset_all)
119{
120    std::auto_ptr< process::child > child = process::child::fork_files(
121        run_reset_all, fs::path("/dev/stdout"), fs::path("/dev/stderr"));
122    process::status status = child->wait();
123    ATF_REQUIRE(status.exited());
124    ATF_REQUIRE_EQ(EXIT_SUCCESS, status.exitstatus());
125}
126
127
128ATF_INIT_TEST_CASES(tcs)
129{
130    ATF_ADD_TEST_CASE(tcs, reset__ok);
131    ATF_ADD_TEST_CASE(tcs, reset__invalid);
132    ATF_ADD_TEST_CASE(tcs, reset_all);
133}
134