1 /*
2 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2016-2017 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "tests.h"
30 #include <stdio.h>
31 #include <sys/mman.h>
32
33 static void
print_mincore(const unsigned int pages,void * const addr,const size_t size,unsigned char * const vec)34 print_mincore(const unsigned int pages, void *const addr,
35 const size_t size, unsigned char *const vec)
36 {
37 unsigned int i;
38
39 if (mincore(addr, size, vec))
40 perror_msg_and_skip("mincore");
41
42 printf("mincore(%p, %zu, [", addr, size);
43 for (i = 0; i < pages; ++i) {
44 if (i)
45 printf(", ");
46 if (i >= DEFAULT_STRLEN) {
47 printf("...");
48 break;
49 }
50 printf("%u", vec[i] & 1);
51 }
52 puts("]) = 0");
53 }
54
55 static void
test_mincore(const unsigned int pages)56 test_mincore(const unsigned int pages)
57 {
58 const size_t page_size = get_page_size();
59 const size_t size = pages * page_size;
60 void *const addr = tail_alloc(size);
61 unsigned char *const vec = tail_alloc(pages);
62
63 mincore(addr, size, NULL);
64 printf("mincore(%p, %zu, NULL) = -1 %s (%m)\n",
65 addr, size, errno2name());
66
67 print_mincore(pages, addr, size, vec);
68 if (size)
69 print_mincore(pages, addr, size - page_size + 1, vec);
70 }
71
main(void)72 int main(void)
73 {
74 test_mincore(1);
75 test_mincore(2);
76 test_mincore(DEFAULT_STRLEN);
77 test_mincore(DEFAULT_STRLEN + 1);
78
79 puts("+++ exited with 0 +++");
80 return 0;
81 }
82