misc_test.cpp revision 1.1.1.2.4.2 
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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/signals/exceptions.hpp"
44
45namespace fs = utils::fs;
46namespace process = utils::process;
47namespace signals = utils::signals;
48
49
50namespace {
51
52
53static void program_reset_raise(void) UTILS_NORETURN;
54
55
56/// Body of a subprocess that tests the signal::reset function.
57///
58/// This function programs a signal to be ignored, then uses signal::reset to
59/// bring it back to its default handler and then delivers the signal to self.
60/// The default behavior of the signal is for the process to die, so this
61/// function should never return correctly (and thus the child process should
62/// always die due to a signal if all goes well).
63static void
64program_reset_raise(void)
65{
66    struct ::sigaction sa;
67    sa.sa_handler = SIG_IGN;
68    sigemptyset(&sa.sa_mask);
69    sa.sa_flags = 0;
70    if (::sigaction(SIGUSR1, &sa, NULL) == -1)
71        std::exit(EXIT_FAILURE);
72
73    signals::reset(SIGUSR1);
74    ::kill(::getpid(), SIGUSR1);
75
76    // Should not be reached, but we do not assert this condition because we
77    // want to exit cleanly if the signal does not abort our execution to let
78    // the parent easily know what happened.
79    std::exit(EXIT_SUCCESS);
80}
81
82
83}  // anonymous namespace
84
85
86ATF_TEST_CASE_WITHOUT_HEAD(reset__ok);
87ATF_TEST_CASE_BODY(reset__ok)
88{
89    // TODO(jmmv): We should have a child type that inherits both stdout and
90    // stderr so that we do not have to specify files.
91    std::auto_ptr< process::child > child = process::child::fork_files(
92        program_reset_raise, fs::path("stdout.txt"), fs::path("stderr.txt"));
93    process::status status = child->wait();
94    ATF_REQUIRE(status.signaled());
95    ATF_REQUIRE_EQ(SIGUSR1, status.termsig());
96}
97
98
99ATF_TEST_CASE_WITHOUT_HEAD(reset__invalid);
100ATF_TEST_CASE_BODY(reset__invalid)
101{
102    ATF_REQUIRE_THROW(signals::system_error, signals::reset(-1));
103}
104
105
106ATF_INIT_TEST_CASES(tcs)
107{
108    ATF_ADD_TEST_CASE(tcs, reset__ok);
109    ATF_ADD_TEST_CASE(tcs, reset__invalid);
110}
111