1 /*
2 * Check decoding of prctl operations without arguments and return code parsing:
3 * PR_GET_KEEPCAPS, PR_GET_SECCOMP, PR_GET_TIMERSLACK, PR_GET_TIMING,
4 * PR_TASK_PERF_EVENTS_DISABLE, and PR_TASK_PERF_EVENTS_ENABLE.
5 *
6 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
7 * Copyright (c) 2016-2017 The strace developers.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "tests.h"
34 #include <asm/unistd.h>
35
36 #if defined __NR_prctl
37
38 # include <stdio.h>
39 # include <unistd.h>
40 # include <linux/prctl.h>
41
42 int
main(void)43 main(void)
44 {
45 static const kernel_ulong_t bogus_op_bits =
46 (kernel_ulong_t) 0xbadc0ded00000000ULL;
47 static const kernel_ulong_t bogus_arg =
48 (kernel_ulong_t) 0xfacefeeddeadbeefULL;
49 static const struct {
50 kernel_ulong_t val;
51 const char *str;
52 } options[] = {
53 { 7, "PR_GET_KEEPCAPS" },
54 { 13, "PR_GET_TIMING" },
55 { 21, "PR_GET_SECCOMP" },
56 { 30, "PR_GET_TIMERSLACK" },
57 { 31, "PR_TASK_PERF_EVENTS_DISABLE" },
58 { 32, "PR_TASK_PERF_EVENTS_ENABLE" },
59 };
60
61 TAIL_ALLOC_OBJECT_CONST_PTR(unsigned int, ptr);
62 unsigned int i;
63
64 for (i = 0; i < ARRAY_SIZE(options); i++) {
65 long rc = syscall(__NR_prctl, options[i].val | bogus_op_bits,
66 bogus_arg);
67 printf("prctl(%s) = %s\n", options[i].str, sprintrc(rc));
68 }
69
70 puts("+++ exited with 0 +++");
71 return 0;
72 }
73
74 #else
75
76 SKIP_MAIN_UNDEFINED("__NR_prctl")
77
78 #endif
79