1 /*
2  * Execute a command with blocked, reset, and raised signal.
3  *
4  * Copyright (c) 2017 Dmitry V. Levin <ldv@altlinux.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 #include "tests.h"
31 #include <signal.h>
32 #include <stdlib.h>
33 #include <unistd.h>
34 
35 int
36 main(int ac, char **av)
37 {
38 	if (ac < 3)
39 		error_msg_and_fail("usage: block_reset_raise_run signo path...");
40 
41 	sigset_t mask;
42 	sigemptyset(&mask);
43 	const int signo = atoi(av[1]);
44 	if (sigaddset(&mask, signo))
45 		perror_msg_and_fail("sigaddset: %s", av[1]);
46 	if (sigprocmask(SIG_BLOCK, &mask, NULL))
47 		perror_msg_and_fail("sigprocmask");
48 	if (signal(signo, SIG_DFL) == SIG_ERR)
49 		perror_msg_and_fail("signal: %s", av[1]);
50 	if (raise(signo))
51 		perror_msg_and_fail("raise: %s", av[1]);
52 
53 	execvp(av[2], av + 2);
54 	perror_msg_and_fail("execvp: %s", av[2]);
55 }
56