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 mmap( ) function shall fail if: 8 * [EOVERFLOW] The file is a regular file and the value of off 9 * plus len exceeds the offset maximum established in the open 10 * file description associated with fildes. 11 * 12 * Test Steps: 13 * 1. Set off and let to ULONG_MAX (make them align to page_size 14 * 2. Assume the offset maximum is ULONG_MAX (on both 32 and 64 system). 15 * 16 * FIXME: Not quite sure how to make "the value of off plus len 17 * exceeds the offset maxium established in the open file description 18 * associated with files". 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 <limits.h> 29#include <sys/mman.h> 30#include <sys/types.h> 31#include <sys/stat.h> 32#include <sys/wait.h> 33#include <fcntl.h> 34#include <string.h> 35#include <errno.h> 36#include "posixtest.h" 37 38#define TNAME "mmap/31-1.c" 39 40int main() 41{ 42 char tmpfname[256]; 43 44 void *pa = NULL; 45 void *addr = NULL; 46 size_t len; 47 int flag; 48 int fd; 49 off_t off = 0; 50 int prot; 51 52 long page_size = sysconf(_SC_PAGE_SIZE); 53 54 55 snprintf(tmpfname, sizeof(tmpfname), "/tmp/pts_mmap_31_1_%ld", 56 (long)getpid()); 57 unlink(tmpfname); 58 fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, 59 S_IRUSR | S_IWUSR); 60 if (fd == -1) 61 { 62 printf(TNAME " Error at open(): %s\n", 63 strerror(errno)); 64 exit(PTS_UNRESOLVED); 65 } 66 unlink(tmpfname); 67 68 flag = MAP_SHARED; 69 prot = PROT_READ | PROT_WRITE; 70 71 /* len + off > maximum offset 72 * FIXME: We assume maximum offset is ULONG_MAX 73 * */ 74 75 len = ULONG_MAX; 76 if (len % page_size) 77 { 78 /* Lower boundary */ 79 len &= ~(page_size - 1); 80 } 81 82 off = ULONG_MAX; 83 if (off % page_size) 84 { 85 /* Lower boundary */ 86 off &= ~(page_size - 1); 87 } 88 89 printf("off: %lx, len: %lx\n", (unsigned long)off, 90 (unsigned long)len); 91 pa = mmap(addr, len, prot, flag, fd, off); 92 if (pa == MAP_FAILED && errno == EOVERFLOW) 93 { 94 printf ("Test Pass: " TNAME " Error at mmap: %s\n", 95 strerror(errno)); 96 exit(PTS_PASS); 97 } 98 99 if (pa == MAP_FAILED) 100 perror("Test FAIL: expect EOVERFLOW but get other error"); 101 else 102 printf ("Test FAIL : Expect EOVERFLOW but got no error\n"); 103 104 close (fd); 105 munmap (pa, len); 106 return PTS_FAIL; 107} 108