mmap_test.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2#ifndef _TESTCASES_MMAP_TEST_H
 3#define _TESTCASES_MMAP_TEST_H
 4#include <sys/mman.h>
 5#include <sys/resource.h>
 6#include <stddef.h>
 7#include <strings.h>
 8#include "kselftest_harness.h"
 9
10#define TOP_DOWN 0
11#define BOTTOM_UP 1
12
13#define PROT (PROT_READ | PROT_WRITE)
14#define FLAGS (MAP_PRIVATE | MAP_ANONYMOUS)
15
16static inline int memory_layout(void)
17{
18	void *value1 = mmap(NULL, sizeof(int), PROT, FLAGS, 0, 0);
19	void *value2 = mmap(NULL, sizeof(int), PROT, FLAGS, 0, 0);
20
21	return value2 > value1;
22}
23#endif /* _TESTCASES_MMAP_TEST_H */