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 implementation shall require that addr be a multiple 8 * of the page size {PAGESIZE}. 9 * 10 * Test step: 11 * Try to call unmap, with addr NOT a multiple of page size. 12 * Should get EINVAL. 13 */ 14 15 #define _XOPEN_SOURCE 600 16 17 #include <pthread.h> 18 #include <stdio.h> 19 #include <stdlib.h> 20 #include <unistd.h> 21 #include <sys/mman.h> 22 #include <sys/types.h> 23 #include <sys/stat.h> 24 #include <sys/wait.h> 25 #include <fcntl.h> 26 #include <string.h> 27 #include <errno.h> 28 #include "posixtest.h" 29 30 #define TNAME "munmap/3-1.c" 31 32 int main(void) 33 { 34 char tmpfname[256]; 35 long file_size; 36 37 void *pa = NULL; 38 void *addr = NULL; 39 size_t len; 40 int flag; 41 int fd; 42 off_t off = 0; 43 int prot; 44 45 int page_size; 46 47 char *pa2; 48 49 page_size = sysconf(_SC_PAGE_SIZE); 50 file_size = 2 * page_size; 51 52 /* We hope to map 2 pages */ 53 len = page_size + 1; 54 55 /* Create tmp file */ 56 snprintf(tmpfname, sizeof(tmpfname), "/tmp/pts_munmap_1_1_%d", 57 getpid()); 58 unlink(tmpfname); 59 fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, S_IRUSR | S_IWUSR); 60 if (fd == -1) { 61 printf(TNAME " Error at open(): %s\n", strerror(errno)); 62 exit(PTS_UNRESOLVED); 63 } 64 unlink(tmpfname); 65 66 if (ftruncate(fd, file_size) == -1) { 67 printf("Error at ftruncate: %s\n", strerror(errno)); 68 exit(PTS_UNRESOLVED); 69 } 70 71 flag = MAP_SHARED; 72 prot = PROT_READ | PROT_WRITE; 73 pa = mmap(addr, len, prot, flag, fd, off); 74 if (pa == MAP_FAILED) { 75 printf("Test Unresolved: " TNAME " Error at mmap: %s\n", 76 strerror(errno)); 77 exit(PTS_UNRESOLVED); 78 } 79 80 /* pa should be a multiple of page size */ 81 pa2 = pa; 82 83 while (((unsigned long)pa2 % page_size) == 0) 84 pa2++; 85 86 close(fd); 87 if (munmap(pa2, len) == -1 && errno == EINVAL) { 88 printf("Got EINVAL\n"); 89 printf("Test PASSED\n"); 90 exit(PTS_PASS); 91 } else { 92 printf("Test FAILED: " TNAME " munmap returns: %s\n", 93 strerror(errno)); 94 exit(PTS_FAIL); 95 } 96 } 97
