1 /*
2 * Copyright (c) 2017 The strace developers.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "tests.h"
29 #include <stdint.h>
30 #include <stdio.h>
31 #include <sys/mman.h>
32 #include <unistd.h>
33 #include <asm/unistd.h>
34
35 static const char *errstr;
36
37 static long
k_madvise(const kernel_ulong_t addr,const kernel_ulong_t length,const kernel_ulong_t advice)38 k_madvise(const kernel_ulong_t addr,
39 const kernel_ulong_t length,
40 const kernel_ulong_t advice)
41 {
42 long rc = syscall(__NR_madvise, addr, length, advice);
43 errstr = sprintrc(rc);
44 return rc;
45 }
46
47 int
main(void)48 main(void)
49 {
50 const unsigned long length = get_page_size();
51 void *const addr = tail_alloc(length);
52 long rc;
53
54 rc = madvise(addr, length, MADV_NORMAL);
55 printf("madvise(%p, %lu, MADV_NORMAL) = %s\n",
56 addr, length, sprintrc(rc));
57
58 static const kernel_ulong_t advice =
59 (kernel_ulong_t) 0xfacefeed00000000ULL | MADV_RANDOM;
60 rc = k_madvise((uintptr_t) addr, length, advice);
61 printf("madvise(%p, %lu, MADV_RANDOM) = %s\n",
62 addr, length, sprintrc(rc));
63
64 static const kernel_ulong_t bogus_length =
65 (kernel_ulong_t) 0xfffffffffffffaceULL;
66 rc = k_madvise(0, bogus_length, MADV_SEQUENTIAL);
67 printf("madvise(NULL, %llu, MADV_SEQUENTIAL) = %s\n",
68 (unsigned long long) bogus_length, sprintrc(rc));
69
70 if (F8ILL_KULONG_SUPPORTED) {
71 rc = k_madvise(f8ill_ptr_to_kulong(addr), length, MADV_NORMAL);
72 printf("madvise(%#llx, %lu, MADV_NORMAL) = %s\n",
73 (unsigned long long) f8ill_ptr_to_kulong(addr),
74 length, sprintrc(rc));
75 }
76
77 puts("+++ exited with 0 +++");
78 return 0;
79 }
80