1 /* Test of sigaction() function.
2 Copyright (C) 2008 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Eric Blake <ebb9@byu.net>, 2008. */
26 #define ASSERT(expr) \
31 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
33 signal (SIGABRT, SIG_DFL); \
43 /* This test is unsafe in the presence of an asynchronous SIGABRT,
44 because we install a signal-handler that is intentionally not
45 async-safe. Hopefully, this does not lead to too many reports of
46 false failures, since people don't generally use 'kill -s SIGABRT'
47 to end a runaway program. */
52 static int entry_count;
54 ASSERT (sig == SIGABRT);
55 ASSERT (sigaction (SIGABRT, NULL, &sa) == 0);
56 ASSERT ((sa.sa_flags & SA_SIGINFO) == 0);
57 switch (entry_count++)
60 ASSERT ((sa.sa_flags & SA_RESETHAND) == 0);
61 ASSERT (sa.sa_handler == handler);
64 ASSERT (sa.sa_handler == SIG_DFL);
72 main (int argc, char *argv[])
75 struct sigaction old_sa;
76 sa.sa_handler = handler;
78 ASSERT (sigemptyset (&sa.sa_mask) == 0);
79 ASSERT (sigaction (SIGABRT, &sa, NULL) == 0);
80 ASSERT (raise (SIGABRT) == 0);
81 sa.sa_flags = SA_RESETHAND | SA_NODEFER;
82 ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0);
83 ASSERT (old_sa.sa_flags == 0);
84 ASSERT (old_sa.sa_handler == handler);
85 ASSERT (raise (SIGABRT) == 0);
86 sa.sa_handler = SIG_DFL;
87 ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0);
88 ASSERT ((old_sa.sa_flags & SA_SIGINFO) == 0);
89 ASSERT (old_sa.sa_handler == SIG_DFL);
90 sa.sa_handler = SIG_IGN;
91 ASSERT (sigaction (SIGABRT, &sa, NULL) == 0);
92 ASSERT (raise (SIGABRT) == 0);
93 ASSERT (sigaction (SIGABRT, NULL, &old_sa) == 0);
94 ASSERT (old_sa.sa_handler == SIG_IGN);
95 ASSERT (raise (SIGABRT) == 0);