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 29 int main(void) 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_%d", 52 getpid()); 53 unlink(tmpfname); 54 fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, S_IRUSR | S_IWUSR); 55 if (fd == -1) { 56 printf(TNAME " Error at open(): %s\n", strerror(errno)); 57 exit(PTS_UNRESOLVED); 58 } 59 unlink(tmpfname); 60 61 if (ftruncate(fd, file_size) == -1) { 62 printf("Error at ftruncate: %s\n", strerror(errno)); 63 exit(PTS_UNRESOLVED); 64 } 65 66 flag = MAP_SHARED; 67 prot = PROT_READ | PROT_WRITE; 68 pa = mmap(addr, len, prot, flag, fd, off); 69 if (pa == MAP_FAILED) { 70 printf("Test Unresolved: " TNAME " Error at mmap: %s\n", 71 strerror(errno)); 72 exit(PTS_UNRESOLVED); 73 } 74 75 close(fd); 76 77 /* Set len as 0 */ 78 if (munmap(pa, 0) == -1 && errno == EINVAL) { 79 printf("Get EINVAL when len=0\n"); 80 printf("Test PASSED\n"); 81 exit(PTS_PASS); 82 } else { 83 printf("Test Fail: Expect EINVAL while get %s\n", 84 strerror(errno)); 85 return PTS_FAIL; 86 } 87 } 88
