1 /*
2  * Check decoding of kill syscall.
3  *
4  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
5  * Copyright (c) 2016 Fei Jie <feij.fnst@cn.fujitsu.com>
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #include "tests.h"
32 #include <asm/unistd.h>
33 
34 #ifdef __NR_kill
35 
36 # include <signal.h>
37 # include <stdio.h>
38 # include <unistd.h>
39 
40 static void
41 handler(int sig)
42 {
43 }
44 
45 int
46 main(void)
47 {
48 	const struct sigaction act = { .sa_handler = handler };
49 	if (sigaction(SIGALRM, &act, NULL))
50 		perror_msg_and_fail("sigaction");
51 
52 	sigset_t mask;
53 	sigemptyset(&mask);
54 	sigaddset(&mask, SIGALRM);
55 	if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
56 		perror_msg_and_fail("sigprocmask");
57 
58 	const int pid = getpid();
59 	long rc = syscall(__NR_kill, pid, (long) 0xdefaced00000000ULL | SIGALRM);
60 	printf("kill(%d, SIGALRM) = %ld\n", pid, rc);
61 
62 	const long big_pid = (long) 0xfacefeedbadc0dedULL;
63 	const long big_sig = (long) 0xdeadbeefcafef00dULL;
64 	rc = syscall(__NR_kill, big_pid, big_sig);
65 	printf("kill(%d, %d) = %ld %s (%m)\n",
66 	       (int) big_pid, (int) big_sig, rc, errno2name());
67 
68 	rc = syscall(__NR_kill, (long) 0xdefaced00000000ULL | pid, 0);
69 	printf("kill(%d, SIG_0) = %ld\n", pid, rc);
70 
71 	puts("+++ exited with 0 +++");
72 	return 0;
73 }
74 
75 #else
76 
77 SKIP_MAIN_UNDEFINED("__NR_kill")
78 
79 #endif
80