Mercurial > gnulib
view tests/test-sigaction.c @ 10241:33944c807312
Avoid SA_ namespace.
* tests/test-sigaction.c (MASK_SA_FLAGS): Rename from SA_MASK.
Reported by Ralf Wildenhues.
Signed-off-by: Eric Blake <ebb9@byu.net>
author | Eric Blake <ebb9@byu.net> |
---|---|
date | Mon, 23 Jun 2008 06:41:08 -0600 |
parents | d8fe05396cf4 |
children | 9b147a1f7a76 |
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/* Test of sigaction() function. Copyright (C) 2008 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* Written by Eric Blake <ebb9@byu.net>, 2008. */ #include <config.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #define ASSERT(expr) \ do \ { \ if (!(expr)) \ { \ fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ fflush (stderr); \ signal (SIGABRT, SIG_DFL); \ abort (); \ } \ } \ while (0) #ifndef SA_NOCLDSTOP # define SA_NOCLDSTOP 0 #endif #ifndef SA_ONSTACK # define SA_ONSTACK 0 #endif #ifndef SA_SIGINFO # define SA_SIGINFO 0 #endif #ifndef SA_NOCLDWAIT # define SA_NOCLDWAIT 0 #endif /* Define a mask of flags required by POSIX. Some implementations provide other flags as extensions, such as SA_RESTORER, that we must ignore in this test. */ #define MASK_SA_FLAGS (SA_NOCLDSTOP | SA_ONSTACK | SA_RESETHAND | SA_RESTART \ SA_SIGINFO | SA_NOCLDWAIT | SA_NODEFER) /* This test is unsafe in the presence of an asynchronous SIGABRT, because we install a signal-handler that is intentionally not async-safe. Hopefully, this does not lead to too many reports of false failures, since people don't generally use 'kill -s SIGABRT' to end a runaway program. */ static void handler (int sig) { static int entry_count; struct sigaction sa; ASSERT (sig == SIGABRT); ASSERT (sigaction (SIGABRT, NULL, &sa) == 0); ASSERT ((sa.sa_flags & SA_SIGINFO) == 0); switch (entry_count++) { case 0: ASSERT ((sa.sa_flags & SA_RESETHAND) == 0); ASSERT (sa.sa_handler == handler); break; case 1: ASSERT (sa.sa_handler == SIG_DFL); break; default: ASSERT (0); } } int main (int argc, char *argv[]) { struct sigaction sa; struct sigaction old_sa; sa.sa_handler = handler; sa.sa_flags = 0; ASSERT (sigemptyset (&sa.sa_mask) == 0); ASSERT (sigaction (SIGABRT, &sa, NULL) == 0); ASSERT (raise (SIGABRT) == 0); sa.sa_flags = SA_RESETHAND | SA_NODEFER; ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0); ASSERT ((old_sa.sa_flags & MASK_SA_FLAGS) == 0); ASSERT (old_sa.sa_handler == handler); ASSERT (raise (SIGABRT) == 0); sa.sa_handler = SIG_DFL; ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0); ASSERT ((old_sa.sa_flags & SA_SIGINFO) == 0); ASSERT (old_sa.sa_handler == SIG_DFL); sa.sa_handler = SIG_IGN; ASSERT (sigaction (SIGABRT, &sa, NULL) == 0); ASSERT (raise (SIGABRT) == 0); ASSERT (sigaction (SIGABRT, NULL, &old_sa) == 0); ASSERT (old_sa.sa_handler == SIG_IGN); ASSERT (raise (SIGABRT) == 0); return 0; }