1 /* Test of sigaction() function.
2 Copyright (C) 2008-2013 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. */
23 #include "signature.h"
24 SIGNATURE_CHECK (sigaction, int, (int, struct sigaction const *,
32 # define SA_NOCLDSTOP 0
38 # define SA_RESETHAND 0
47 # define SA_NOCLDWAIT 0
50 /* Define a mask of flags required by POSIX. Some implementations
51 provide other flags as extensions, such as SA_RESTORER, that we
52 must ignore in this test. */
53 #define MASK_SA_FLAGS (SA_NOCLDSTOP | SA_ONSTACK | SA_RESETHAND | SA_RESTART \
54 | SA_SIGINFO | SA_NOCLDWAIT | SA_NODEFER)
56 /* This test is unsafe in the presence of an asynchronous SIGABRT,
57 because we install a signal-handler that is intentionally not
58 async-safe. Hopefully, this does not lead to too many reports of
59 false failures, since people don't generally use 'kill -s SIGABRT'
60 to end a runaway program. */
65 static int entry_count;
67 ASSERT (sig == SIGABRT);
68 ASSERT (sigaction (SIGABRT, NULL, &sa) == 0);
69 ASSERT ((sa.sa_flags & SA_SIGINFO) == 0);
70 switch (entry_count++)
73 ASSERT ((sa.sa_flags & SA_RESETHAND) == 0);
74 ASSERT (sa.sa_handler == handler);
77 /* This assertion fails on glibc-2.3.6 systems with LinuxThreads,
78 when this program is linked with -lpthread, due to the sigaction()
79 override in libpthread.so. */
80 #if !(defined __GLIBC__ || defined __UCLIBC__)
81 ASSERT (sa.sa_handler == SIG_DFL);
93 struct sigaction old_sa;
94 sa.sa_handler = handler;
97 ASSERT (sigemptyset (&sa.sa_mask) == 0);
98 ASSERT (sigaction (SIGABRT, &sa, NULL) == 0);
99 ASSERT (raise (SIGABRT) == 0);
101 sa.sa_flags = SA_RESETHAND | SA_NODEFER;
102 ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0);
103 ASSERT ((old_sa.sa_flags & MASK_SA_FLAGS) == 0);
104 ASSERT (old_sa.sa_handler == handler);
105 ASSERT (raise (SIGABRT) == 0);
107 sa.sa_handler = SIG_DFL;
108 ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0);
109 ASSERT ((old_sa.sa_flags & SA_SIGINFO) == 0);
110 #if !(defined __GLIBC__ || defined __UCLIBC__) /* see above */
111 ASSERT (old_sa.sa_handler == SIG_DFL);
114 sa.sa_handler = SIG_IGN;
115 ASSERT (sigaction (SIGABRT, &sa, NULL) == 0);
116 ASSERT (raise (SIGABRT) == 0);
117 ASSERT (sigaction (SIGABRT, NULL, &old_sa) == 0);
118 ASSERT (old_sa.sa_handler == SIG_IGN);
119 ASSERT (raise (SIGABRT) == 0);