1/* 2 * Copyright (c) 2002, Intel Corporation. All rights reserved. 3 * This file is licensed under the GPL license. For the full content 4 * of this license, see the COPYING file at the top level of this 5 * source tree. 6 * 7 * The off argument is constrained to be aligned and sized 8 * according to the value returned by 9 * sysconf( ) when passed _SC_PAGESIZE or _SC_PAGE_SIZE. 10 * 11 * The mmap( ) function shall fail if: 12 * [EINVAL] The addr argument (if MAP_FIXED was specified) or off is not a multiple of 13 * the page size as returned by sysconf( ), or is considered invalid by the 14 * implementation. 15 * 16 * Test step: 17 * 1. Set 'off' a value which is not a multiple of page size; 18 * 2. Call mmap() and get EINVAL; 19 * 20 */ 21 22#define _XOPEN_SOURCE 600 23 24#include <pthread.h> 25#include <stdio.h> 26#include <stdlib.h> 27#include <unistd.h> 28#include <sys/mman.h> 29#include <sys/types.h> 30#include <sys/stat.h> 31#include <sys/wait.h> 32#include <fcntl.h> 33#include <string.h> 34#include <errno.h> 35#include "posixtest.h" 36 37#define TNAME "mmap/11-1.c" 38 39int main() 40{ 41 char tmpfname[256]; 42 long page_size; 43 long total_size; 44 45 void *pa = NULL; 46 void *addr = NULL; 47 size_t size; 48 int flag; 49 int fd; 50 off_t off = 0; 51 int prot; 52 53 page_size = sysconf(_SC_PAGE_SIZE); 54 total_size = 3 * page_size; 55 size = page_size; 56 57 snprintf(tmpfname, sizeof(tmpfname), "/tmp/pts_mmap_11_1_%ld", 58 (long)getpid()); 59 unlink(tmpfname); 60 fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, 61 S_IRUSR | S_IWUSR); 62 if (fd == -1) 63 { 64 printf(TNAME " Error at open(): %s\n", 65 strerror(errno)); 66 exit(PTS_UNRESOLVED); 67 } 68 unlink(tmpfname); 69 70 if (ftruncate(fd, total_size) == -1) 71 { 72 printf(TNAME "Error at ftruncate(): %s\n", 73 strerror(errno)); 74 exit(PTS_UNRESOLVED); 75 } 76 77 prot = PROT_READ | PROT_WRITE; 78 flag = MAP_SHARED; 79 80 /* This offset is considered illegal, not a multiple of page_size, 81 * unless the page_size is 1 byte, which is considered impossible. 82 */ 83 84 off = page_size + 1; 85 pa = mmap(addr, size, prot, flag, fd, off); 86 if (pa == MAP_FAILED && errno == EINVAL) 87 { 88 printf("Test Pass: " TNAME " Get " 89 "EINVAL when 'off' is not a multiple of page size\n"); 90 exit(PTS_PASS); 91 } 92 93 printf ("Test FAIL, Did not get EINVAL" 94 " when 'off' is not a multiple of page size, get: %s\n", strerror(errno)); 95 close (fd); 96 munmap (pa, size); 97 return PTS_FAIL; 98} 99