12c28215423293e443469a07ae7011135d058b671Garrett Cooper/* 20dc076565f772bb1953209fb69ea150b494aaa40robbiew * Copyright (c) 2002, Intel Corporation. All rights reserved. 344de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis * Copyright (c) 2012, Cyril Hrubis <chrubis@suse.cz> 444de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis * 50dc076565f772bb1953209fb69ea150b494aaa40robbiew * This file is licensed under the GPL license. For the full content 62c28215423293e443469a07ae7011135d058b671Garrett Cooper * of this license, see the COPYING file at the top level of this 70dc076565f772bb1953209fb69ea150b494aaa40robbiew * source tree. 844de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis * 92c28215423293e443469a07ae7011135d058b671Garrett Cooper * The mmap() function shall establish a mapping between a process's 100dc076565f772bb1953209fb69ea150b494aaa40robbiew * address space and a file, 110dc076565f772bb1953209fb69ea150b494aaa40robbiew * 1243c1224558e7ea2df04e16ba6b88b4945c750dfaCyril Hrubis * Test Steps: 130dc076565f772bb1953209fb69ea150b494aaa40robbiew * 1. Create a tmp file; 140dc076565f772bb1953209fb69ea150b494aaa40robbiew * 2. mmap it to memory using mmap(); 150dc076565f772bb1953209fb69ea150b494aaa40robbiew * 160dc076565f772bb1953209fb69ea150b494aaa40robbiew */ 170dc076565f772bb1953209fb69ea150b494aaa40robbiew 180dc076565f772bb1953209fb69ea150b494aaa40robbiew#define _XOPEN_SOURCE 600 190dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <stdio.h> 200dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <stdlib.h> 210dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <unistd.h> 220dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <sys/mman.h> 230dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <sys/types.h> 240dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <sys/stat.h> 250dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <fcntl.h> 260dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <string.h> 270dc076565f772bb1953209fb69ea150b494aaa40robbiew#include <errno.h> 280dc076565f772bb1953209fb69ea150b494aaa40robbiew#include "posixtest.h" 292c28215423293e443469a07ae7011135d058b671Garrett Cooper 3044de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubisint main(void) 310dc076565f772bb1953209fb69ea150b494aaa40robbiew{ 3244de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis char tmpfname[256]; 3375d9d65295cf559f9ba38aae5c16acf426e397f9Cyril Hrubis ssize_t len = 1024; 34e6ad98c69b0347d4e9033677bf5673c192edf4a0Wei,Jiangang char data[len]; 35e6ad98c69b0347d4e9033677bf5673c192edf4a0Wei,Jiangang void *pa; 3644de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis int fd; 372c28215423293e443469a07ae7011135d058b671Garrett Cooper 3844de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis snprintf(tmpfname, sizeof(tmpfname), "/tmp/pts_mmap_1_1_%d", getpid()); 3944de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis unlink(tmpfname); 4044de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, S_IRUSR | S_IWUSR); 4144de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis if (fd == -1) { 4244de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis printf("Error at open(): %s\n", strerror(errno)); 4344de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis return PTS_UNRESOLVED; 4444de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis } 4543c1224558e7ea2df04e16ba6b88b4945c750dfaCyril Hrubis 4644de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis unlink(tmpfname); 4743c1224558e7ea2df04e16ba6b88b4945c750dfaCyril Hrubis 4844de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis memset(data, 'a', len); 4944de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis if (write(fd, data, len) != len) { 5044de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis printf("Error at write(): %s\n", strerror(errno)); 5144de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis return PTS_UNRESOLVED; 5244de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis } 532c28215423293e443469a07ae7011135d058b671Garrett Cooper 5444de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis pa = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 5544de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis if (pa == MAP_FAILED) { 5644de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis printf("Error at mmap: %s\n", strerror(errno)); 5744de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis return PTS_FAIL; 5844de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis } 590dc076565f772bb1953209fb69ea150b494aaa40robbiew 6043c1224558e7ea2df04e16ba6b88b4945c750dfaCyril Hrubis if (*(char *)pa != 'a') { 6144de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis printf("Test FAILED: The file was not mapped correctly.\n"); 6244de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis return PTS_FAIL; 6344de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis } 640dc076565f772bb1953209fb69ea150b494aaa40robbiew 6544de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis close(fd); 6644de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis munmap(pa, len); 6744de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis printf("Test PASSED\n"); 6844de8a350c48dcf079d2871493d8d635fe1d7de0Cyril Hrubis return PTS_PASS; 69ec6edca7aa42b6affd989ef91b5897f96795e40fChris Dearman} 70