69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
/*
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* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2015-2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <assert.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <signal.h>
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static void handle_signal(int no)
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{
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_exit(128 + no);
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}
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int
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main(void)
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{
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struct sigaction sa, sa0;
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sa.sa_handler = SIG_IGN;
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sigemptyset(&sa.sa_mask);
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sigaddset(&sa.sa_mask, SIGHUP);
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sigaddset(&sa.sa_mask, SIGINT);
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sa.sa_flags = SA_RESTART;
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assert(!sigaction(SIGUSR2, &sa, &sa0));
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sa.sa_handler = handle_signal;
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sigemptyset(&sa.sa_mask);
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sigaddset(&sa.sa_mask, SIGQUIT);
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sigaddset(&sa.sa_mask, SIGTERM);
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sa.sa_flags = SA_SIGINFO;
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assert(!sigaction(SIGUSR2, &sa, &sa0));
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sa.sa_handler = SIG_DFL;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = 0;
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assert(!sigaction(SIGUSR2, &sa, &sa0));
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sigfillset(&sa.sa_mask);
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sigdelset(&sa.sa_mask, SIGHUP);
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assert(!sigaction(SIGUSR2, &sa, &sa0));
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return 0;
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}
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