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 munmap( ) function shall fail if: 8 * [EINVAL] The len argument is 0. 9 * 10 */ 11 12#define _XOPEN_SOURCE 600 13 14#include <pthread.h> 15#include <stdio.h> 16#include <stdlib.h> 17#include <unistd.h> 18#include <sys/mman.h> 19#include <sys/types.h> 20#include <sys/stat.h> 21#include <sys/wait.h> 22#include <fcntl.h> 23#include <string.h> 24#include <errno.h> 25#include "posixtest.h" 26 27#define TNAME "munmap/9-1.c" 28 29int main() 30{ 31 char tmpfname[256]; 32 long file_size; 33 34 void *pa = NULL; 35 void *addr = NULL; 36 size_t len; 37 int flag; 38 int fd; 39 off_t off = 0; 40 int prot; 41 42 int page_size; 43 44 page_size = sysconf(_SC_PAGE_SIZE); 45 file_size = 2 * page_size; 46 47 /* We hope to map 2 pages */ 48 len = page_size + 1; 49 50 /* Create tmp file */ 51 snprintf(tmpfname, sizeof(tmpfname), "/tmp/pts_munmap_1_1_%ld", 52 (long)getpid()); 53 unlink(tmpfname); 54 fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, 55 S_IRUSR | S_IWUSR); 56 if (fd == -1) 57 { 58 printf(TNAME " Error at open(): %s\n", 59 strerror(errno)); 60 exit(PTS_UNRESOLVED); 61 } 62 unlink(tmpfname); 63 64 if (ftruncate (fd, file_size) == -1) 65 { 66 printf("Error at ftruncate: %s\n", strerror(errno)); 67 exit(PTS_UNRESOLVED); 68 } 69 70 flag = MAP_SHARED; 71 prot = PROT_READ | PROT_WRITE; 72 pa = mmap(addr, len, prot, flag, fd, off); 73 if (pa == MAP_FAILED) 74 { 75 printf ("Test Unresolved: " TNAME " Error at mmap: %s\n", 76 strerror(errno)); 77 exit(PTS_UNRESOLVED); 78 } 79 80 close (fd); 81 82 /* Set len as 0 */ 83 if (munmap (pa, 0) == -1 && errno == EINVAL) 84 { 85 printf ("Get EINVAL when len=0\n"); 86 printf ("Test PASSED\n"); 87 exit(PTS_PASS); 88 } 89 else 90 { 91 printf ("Test Fail: Expect EINVAL while get %s\n", 92 strerror(errno)); 93 return PTS_FAIL; 94 } 95} 96