1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License version 2. 4 * 5 * This program is distributed in the hope that it will be useful, 6 * but WITHOUT ANY WARRANTY; without even the implied warranty of 7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 8 * GNU General Public License for more details. 9 * 10 * Test that munlock return a value of zero upon successful completion. 11 * 12 */ 13 #include <sys/mman.h> 14 #include <stdio.h> 15 #include <stdlib.h> 16 #include <errno.h> 17 #include "posixtest.h" 18 19 #define BUFSIZE 8 20 21 int main(void) 22 { 23 int result; 24 void *ptr; 25 26 ptr = malloc(BUFSIZE); 27 if (ptr == NULL) { 28 printf("Can not allocate memory.\n"); 29 return PTS_UNRESOLVED; 30 } 31 32 if (mlock(ptr, BUFSIZE) != 0) { 33 if (errno == EPERM) { 34 printf 35 ("You don't have permission to lock your address space.\nTry to rerun this test as root.\n"); 36 } else { 37 perror("An error occurs when calling mlock()"); 38 } 39 return PTS_UNRESOLVED; 40 } 41 42 result = munlock(ptr, BUFSIZE); 43 if (result == 0 && errno == 0) { 44 printf("Test PASSED\n"); 45 return PTS_PASS; 46 } else if (errno == 0) { 47 printf("mlock did not return a value of zero\n"); 48 return PTS_FAIL; 49 } 50 51 perror("Unexpected error"); 52 return PTS_UNRESOLVED; 53 } 54
