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 * 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
35 #if defined __NR_prctl
36
37 # include <stdio.h>
38 # include <unistd.h>
39 # include <linux/prctl.h>
40
41 int
main(void)42 main(void)
43 {
44 static const kernel_ulong_t bogus_op_bits =
45 (kernel_ulong_t) 0xbadc0ded00000000ULL;
46 static const kernel_ulong_t bogus_arg =
47 (kernel_ulong_t) 0xfacefeeddeadbeefULL;
48 static const struct {
49 kernel_ulong_t val;
50 const char *str;
51 } options[] = {
52 { 7, "PR_GET_KEEPCAPS" },
53 { 13, "PR_GET_TIMING" },
54 { 21, "PR_GET_SECCOMP" },
55 { 30, "PR_GET_TIMERSLACK" },
56 { 31, "PR_TASK_PERF_EVENTS_DISABLE" },
57 { 32, "PR_TASK_PERF_EVENTS_ENABLE" },
58 };
59
60 unsigned int *ptr = tail_alloc(sizeof(*ptr));
61 unsigned int i;
62
63 for (i = 0; i < ARRAY_SIZE(options); i++) {
64 long rc = syscall(__NR_prctl, options[i].val | bogus_op_bits,
65 bogus_arg);
66 printf("prctl(%s) = %s\n", options[i].str, sprintrc(rc));
67 }
68
69 puts("+++ exited with 0 +++");
70 return 0;
71 }
72
73 #else
74
75 SKIP_MAIN_UNDEFINED("__NR_prctl")
76
77 #endif
78