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 the munlockall() function always return a value of zero if it is 11 * supported by the implementation. 12 */ 13 14 #include <unistd.h> 15 #include <sys/mman.h> 16 #include <stdio.h> 17 #include <errno.h> 18 #include "posixtest.h" 19 20 #if !defined(_POSIX_MEMLOCK) || _POSIX_MEMLOCK == -1 21 22 int main(void) 23 { 24 printf("Does not support ML (Memory Lock).\n"); 25 return PTS_UNSUPPORTED; 26 } 27 28 #else 29 30 #if _POSIX_MEMLOCK != 0 31 int main(void) 32 { 33 int result; 34 35 result = munlockall(); 36 37 if (result == 0) { 38 printf("Test PASSED\n"); 39 return PTS_PASS; 40 } else if (errno == EPERM) { 41 printf 42 ("You don't have permission to unlock your address space.\nTry to rerun this test as root.\n"); 43 return PTS_UNRESOLVED; 44 } else { 45 printf("munlockall() returns %i instead of zero.\n", result); 46 return PTS_FAIL; 47 } 48 49 } 50 51 #else 52 53 int main(void) 54 { 55 int result; 56 long memlock; 57 58 memlock = sysconf(_SC_MEMLOCK); 59 if (errno) { 60 perror("An errno occurs when calling sysconf().\n"); 61 return PTS_UNRESOLVED; 62 } 63 64 result = munlockall(); 65 66 if ((result == 0 && memlock > 0) || (result == -1 && memlock <= 0)) { 67 printf("Test PASSED\n"); 68 return PTS_PASS; 69 } else if (errno == EPERM) { 70 printf 71 ("You don't have permission to unlock your address space.\nTry to rerun this test as root.\n"); 72 return PTS_UNRESOLVED; 73 } else { 74 printf("munlockall() returns %i instead of zero.\n", result); 75 return PTS_FAIL; 76 } 77 78 } 79 80 #endif 81 82 #endif 83
