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 16 static 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 */ 24