1 /*
2 * Check decoding of ioprio_get and ioprio_set syscalls.
3 *
4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
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
32 #include <asm/unistd.h>
33
34 #if defined(__NR_ioprio_get) && defined(__NR_ioprio_set)
35
36 # include <stdio.h>
37 # include <unistd.h>
38
39 enum {
40 IOPRIO_CLASS_NONE,
41 IOPRIO_CLASS_RT,
42 IOPRIO_CLASS_BE,
43 IOPRIO_CLASS_IDLE
44 };
45
46 # include "xlat.h"
47 # include "xlat/ioprio_class.h"
48
49 void
print_ioprio(unsigned long val)50 print_ioprio(unsigned long val)
51 {
52 printf(" (IOPRIO_PRIO_VALUE(");
53 printxval(ioprio_class, val >> 13, "IOPRIO_CLASS_???");
54 printf(", %d))", (int) (val & 0x1fff));
55 }
56
57 int
main(void)58 main(void)
59 {
60 static const kernel_ulong_t bogus_which =
61 (kernel_ulong_t) 0xdeadfacefa57beefULL;
62 static const kernel_ulong_t bogus_who =
63 (kernel_ulong_t) 0xbadc0dedda7a1057ULL;
64 static const kernel_ulong_t bogus_ioprio =
65 (kernel_ulong_t) 0xdec0ded1facefeedULL;
66 static const char * const bogus_ioprio_str =
67 "IOPRIO_PRIO_VALUE(0x7d677 /* IOPRIO_CLASS_??? */, 7917)";
68
69 long rc;
70
71 rc = syscall(__NR_ioprio_get, bogus_which, bogus_who);
72 printf("ioprio_get(%#x /* IOPRIO_WHO_??? */, %d) = %s\n",
73 (int) bogus_which, (int) bogus_who, sprintrc(rc));
74
75 rc = syscall(__NR_ioprio_get, 1, 0);
76 printf("ioprio_get(IOPRIO_WHO_PROCESS, 0) = %s", sprintrc(rc));
77
78 if (rc >= -1)
79 print_ioprio(rc);
80
81 puts("");
82
83 rc = syscall(__NR_ioprio_set, 2, 0, 8191);
84 printf("ioprio_set(IOPRIO_WHO_PGRP, 0, "
85 "IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 8191)) = %s\n",
86 sprintrc(rc));
87
88 rc = syscall(__NR_ioprio_set, bogus_which, bogus_who, bogus_ioprio);
89 printf("ioprio_set(%#x /* IOPRIO_WHO_??? */, %d, %s) = %s\n",
90 (int) bogus_which, (int) bogus_who, bogus_ioprio_str,
91 sprintrc(rc));
92
93 puts("+++ exited with 0 +++");
94
95 return 0;
96 }
97
98 #else
99
100 SKIP_MAIN_UNDEFINED("__NR_ioprio_get && __NR_ioprio_set");
101
102 #endif
103