1 /*
2 * Check decoding of prctl PR_GET_PDEATHSIG/PR_SET_PDEATHSIG operations.
3 *
4 * Copyright (c) 2016 JingPiao Chen <chenjingpiao@foxmail.com>
5 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
6 * Copyright (c) 2016-2017 The strace developers.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "tests.h"
33 #include <asm/unistd.h>
34 #include <linux/prctl.h>
35
36 #if defined __NR_prctl && defined PR_GET_PDEATHSIG && defined PR_SET_PDEATHSIG
37
38 # include <stdio.h>
39 # include <unistd.h>
40 # include <sys/signal.h>
41
42 int
main(void)43 main(void)
44 {
45 static const kernel_ulong_t bogus_signal =
46 (kernel_ulong_t) 0xbadc0deddeadfeedULL;
47
48 TAIL_ALLOC_OBJECT_CONST_PTR(int, pdeathsig);
49 long rc;
50
51 rc = syscall(__NR_prctl, PR_SET_PDEATHSIG, bogus_signal);
52 printf("prctl(PR_SET_PDEATHSIG, %llu) = %s\n",
53 (unsigned long long) bogus_signal, sprintrc(rc));
54
55 rc = syscall(__NR_prctl, PR_SET_PDEATHSIG, SIGINT);
56 printf("prctl(PR_SET_PDEATHSIG, SIGINT) = %s\n", sprintrc(rc));
57
58 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, NULL);
59 printf("prctl(PR_GET_PDEATHSIG, NULL) = %s\n", sprintrc(rc));
60
61 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, pdeathsig + 1);
62 printf("prctl(PR_GET_PDEATHSIG, %p) = %s\n",
63 pdeathsig + 1, sprintrc(rc));
64
65 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, pdeathsig);
66 if (rc) {
67 printf("prctl(PR_GET_PDEATHSIG, %p) = %s\n",
68 pdeathsig, sprintrc(rc));
69 } else {
70 printf("prctl(PR_GET_PDEATHSIG, [SIGINT]) = %s\n",
71 sprintrc(rc));
72 }
73
74 puts("+++ exited with 0 +++");
75 return 0;
76 }
77
78 #else
79
80 SKIP_MAIN_UNDEFINED("__NR_prctl && PR_GET_PDEATHSIG && PR_SET_PDEATHSIG")
81
82 #endif
83