1 /*
2 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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 <stdio.h>
30 #include <sys/mman.h>
31
32 static void
print_mincore(const unsigned int pages,void * const addr,const size_t size,unsigned char * const vec)33 print_mincore(const unsigned int pages, void *const addr,
34 const size_t size, unsigned char *const vec)
35 {
36 unsigned int i;
37
38 if (mincore(addr, size, vec))
39 perror_msg_and_skip("mincore");
40
41 printf("mincore(%p, %zu, [", addr, size);
42 for (i = 0; i < pages; ++i) {
43 if (i)
44 printf(", ");
45 if (i >= DEFAULT_STRLEN) {
46 printf("...");
47 break;
48 }
49 printf("%u", vec[i] & 1);
50 }
51 puts("]) = 0");
52 }
53
54 static void
test_mincore(const unsigned int pages)55 test_mincore(const unsigned int pages)
56 {
57 const size_t page_size = get_page_size();
58 const size_t size = pages * page_size;
59 void *const addr = tail_alloc(size);
60 unsigned char *const vec = tail_alloc(pages);
61
62 mincore(addr, size, NULL);
63 printf("mincore(%p, %zu, NULL) = -1 %s (%m)\n",
64 addr, size, errno2name());
65
66 print_mincore(pages, addr, size, vec);
67 if (size)
68 print_mincore(pages, addr, size - page_size + 1, vec);
69 }
70
main(void)71 int main(void)
72 {
73 test_mincore(1);
74 test_mincore(2);
75 test_mincore(DEFAULT_STRLEN);
76 test_mincore(DEFAULT_STRLEN + 1);
77
78 puts("+++ exited with 0 +++");
79 return 0;
80 }
81