blob: dbecc8d460ef276fa74ff918967a599c14d0ca15 [file] [log] [blame]
Dmitry V. Levinaa1ed762016-04-27 21:58:43 +00001/*
2 * Check decoding of get_mempolicy syscall.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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#include <sys/syscall.h>
32
33#ifdef __NR_get_mempolicy
34
35# include <stdio.h>
36# include <unistd.h>
37
38# include "xlat.h"
39# include "xlat/policies.h"
40
41# define MAX_STRLEN 3
42# define NLONGS(n) ((n + 8 * sizeof(long) - 2) \
43 / (8 * sizeof(long)))
44
45static void
46print_nodes(unsigned long maxnode)
47{
48 unsigned long *const nodemask =
49 tail_alloc(sizeof(*nodemask) * NLONGS(maxnode));
50 (void) tail_alloc(1);
51
52 if (syscall(__NR_get_mempolicy, 0, nodemask, maxnode, 0, 0)) {
53 printf("get_mempolicy(NULL, %p, %lu, NULL, 0) = -1 %s (%m)\n",
54 nodemask, maxnode, errno2name());
55 return;
56 }
57
58 printf("get_mempolicy(NULL, [");
59
60 unsigned int nlongs = NLONGS(maxnode);
61 unsigned int i;
62 for (i = 0; i < nlongs; ++i) {
63 if (i)
64 fputs(", ", stdout);
65 if (i >= MAX_STRLEN) {
66 fputs("...", stdout);
67 break;
68 }
69 printf("%#0*lx", (int) sizeof(*nodemask) * 2 + 2, nodemask[i]);
70 }
71
72 printf("], %lu, NULL, 0) = 0\n", maxnode);
73}
74
75int
76main(void)
77{
78 long rc;
79
80 if (syscall(__NR_get_mempolicy, 0, 0, 0, 0, 0))
81 perror_msg_and_skip("get_mempolicy");
82 puts("get_mempolicy(NULL, NULL, 0, NULL, 0) = 0");
83
84 int *mode = (void *) 0xdefaced1baddeed2;
85 unsigned long maxnode = (unsigned long) 0xcafef00dbadc0ded;
86 const unsigned long *nodemask = (void *) 0xfacedad3bebefed4;
87 const unsigned long addr = (unsigned long) 0xfacefeeddeadbeef;
88 const unsigned long flags = -1U;
89 rc = syscall(__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags);
90 printf("get_mempolicy(%p, %p, %lu, %#lx, %s|%#lx) = %ld %s (%m)\n",
91 mode, nodemask, maxnode, addr,
92 "MPOL_F_NODE|MPOL_F_ADDR",
93 flags & ~3, rc, errno2name());
94
95 (void) tail_alloc(1);
96 mode = tail_alloc(sizeof(*mode));
97 (void) tail_alloc(1);
98
99 rc = syscall(__NR_get_mempolicy, mode, 0, 0, 0, 0);
100 printf("get_mempolicy([");
101 printxval(policies, (unsigned) *mode, "MPOL_???");
102 printf("], NULL, 0, NULL, 0) = %ld\n", rc);
103
104 *mode = -1;
105 rc = syscall(__NR_get_mempolicy, mode, 0, 0, mode - 1, 2);
106 printf("get_mempolicy([");
107 printxval(policies, (unsigned) *mode, "MPOL_???");
108 printf("], NULL, 0, %p, MPOL_F_ADDR) = %ld\n", mode - 1, rc);
109
110 maxnode = get_page_size() * 8;
111
112 print_nodes(maxnode);
113 print_nodes(maxnode + 1);
114 print_nodes(maxnode + 2);
115
116 maxnode = sizeof(*nodemask) * 8;
117 print_nodes(maxnode - 1);
118 print_nodes(maxnode );
119 print_nodes(maxnode + 1);
120 print_nodes(maxnode + 2);
121 print_nodes(maxnode * 2 - 1);
122 print_nodes(maxnode * 2 );
123 print_nodes(maxnode * 2 + 1);
124 print_nodes(maxnode * 2 + 2);
125 print_nodes(maxnode * 3 - 1);
126 print_nodes(maxnode * 3 );
127 print_nodes(maxnode * 3 + 1);
128 print_nodes(maxnode * 3 + 2);
129
130 puts("+++ exited with 0 +++");
131 return 0;
132}
133
134#else
135
136SKIP_MAIN_UNDEFINED("__NR_get_mempolicy")
137
138#endif