1 /* 2 * 3 * Copyright (c) National ICT Australia, 2006 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 /* NICTA */ 21 /* 13/02/2006 Implemented carl.vanschaik at nicta.com.au */ 22 23 /* mem03.c */ 24 /* 25 * NAME 26 * mem03.c 27 * 28 * DESCRIPTION 29 * - create two files, write known data to the files. 30 * - mmap the files, verify data 31 * - unmap files 32 * - remmap files, swap virtual addresses ie: file1 at file2's address, etc 33 * 34 * REASONING 35 * - If the kernel fails to correctly flush the TLB entry, the second mmap 36 * will not show the correct data. 37 * 38 * 39 * RESTRICTIONS 40 * None 41 */ 42 43 #include <stdio.h> 44 #include <signal.h> 45 #include <stdlib.h> 46 #include "test.h" 47 #include <unistd.h> 48 #include <errno.h> 49 #include <time.h> 50 #include <string.h> 51 #include <sys/types.h> 52 #include <sys/stat.h> /* definitions for open() */ 53 #include <sys/mman.h> /* definitions for mmap() */ 54 #include <fcntl.h> /* definition of open() */ 55 #include <sys/user.h> 56 57 #define FAILED (-1) /* return status for all funcs indicating failure */ 58 #define SUCCESS 0 /* return status for all routines indicating success */ 59 60 static void setup(); 61 static void cleanup(); 62 63 char *TCID = "mem03"; 64 int TST_TOTAL = 1; 65 66 int f1 = -1, f2 = -1; 67 char *mm1 = NULL, *mm2 = NULL; 68 69 /*--------------------------------------------------------------------*/ 70 int main(void) 71 { 72 char tmp1[] = "./tmp.file.1"; 73 char tmp2[] = "./tmp.file.2"; 74 75 char str1[] = "testing 123"; 76 char str2[] = "my test mem"; 77 78 setup(); 79 80 if ((f1 = open(tmp1, O_RDWR | O_CREAT, S_IREAD | S_IWRITE)) == -1) 81 tst_brkm(TFAIL, cleanup, "failed to open/create file %s", tmp1); 82 83 if ((f2 = open(tmp2, O_RDWR | O_CREAT, S_IREAD | S_IWRITE)) == -1) 84 tst_brkm(TFAIL, cleanup, "failed to open/create file %s", tmp2); 85 86 write(f1, str1, strlen(str1)); 87 write(f2, str2, strlen(str2)); 88 89 { 90 char *save_mm1, *save_mm2; 91 92 mm1 = mmap(0, 64, PROT_READ, MAP_PRIVATE, f1, 0); 93 mm2 = mmap(0, 64, PROT_READ, MAP_PRIVATE, f2, 0); 94 95 if ((mm1 == (void *)-1) || (mm2 == (void *)-1)) 96 tst_brkm(TFAIL, cleanup, "mmap failed"); 97 98 save_mm1 = mm1; 99 save_mm2 = mm2; 100 101 if (strncmp(str1, mm1, strlen(str1))) 102 tst_brkm(TFAIL, cleanup, "failed on compare %s", tmp1); 103 104 if (strncmp(str2, mm2, strlen(str2))) 105 tst_brkm(TFAIL, cleanup, "failed on compare %s", tmp2); 106 107 munmap(mm1, 64); 108 munmap(mm2, 64); 109 110 mm1 = mmap(save_mm2, 64, PROT_READ, MAP_PRIVATE, f1, 0); 111 mm2 = mmap(save_mm1, 64, PROT_READ, MAP_PRIVATE, f2, 0); 112 113 if ((mm1 == (void *)-1) || (mm2 == (void *)-1)) 114 tst_brkm(TFAIL, cleanup, "second mmap failed"); 115 116 if (mm1 != save_mm2) { 117 printf("mmap not using same address\n"); 118 119 } 120 121 if (mm2 != save_mm1) { 122 printf("mmap not using same address\n"); 123 124 } 125 126 if (strncmp(str1, mm1, strlen(str1))) 127 tst_brkm(TFAIL, cleanup, "failed on compare %s", tmp1); 128 129 if (strncmp(str2, mm2, strlen(str2))) 130 tst_brkm(TFAIL, cleanup, "failed on compare %s", tmp2); 131 132 munmap(mm1, 64); 133 munmap(mm2, 64); 134 } 135 136 tst_resm(TPASS, "%s memory test succeeded", TCID); 137 138 /* clean up and exit */ 139 cleanup(); 140 141 tst_exit(); 142 } 143 144 /* 145 * setup() - performs all ONE TIME setup for this test 146 */ 147 void setup(void) 148 { 149 /* 150 * Create a temporary directory and cd into it. 151 */ 152 tst_tmpdir(); 153 } 154 155 /* 156 * cleanup() - performs all the ONE TIME cleanup for this test at completion 157 * or premature exit. 158 */ 159 void cleanup(void) 160 { 161 if (mm1) 162 munmap(mm1, 64); 163 if (mm2) 164 munmap(mm2, 64); 165 166 if (f1 != -1) 167 close(f1); 168 if (f2 != -1) 169 close(f2); 170 171 tst_rmdir(); 172 173 } 174
