1/* 2 * Copyright (c) 2004, Bull SA. All rights reserved. 3 * Created by: Laurent.Vivier@bull.net 4 * This file is licensed under the GPL license. For the full content 5 * of this license, see the COPYING file at the top level of this 6 * source tree. 7 */ 8 9/* 10 * assertion: 11 * 12 * aiocbp may be be used as an argument to aio_error() and aio_return(). 13 * 14 * method: (short read) 15 * 16 * - write data to a file 17 * - read file using aio_read 18 * - check error and return codes using previous aiocb 19 */ 20 21#define _XOPEN_SOURCE 600 22#include <stdio.h> 23#include <sys/types.h> 24#include <unistd.h> 25#include <sys/stat.h> 26#include <fcntl.h> 27#include <string.h> 28#include <errno.h> 29#include <stdlib.h> 30#include <aio.h> 31 32#include "posixtest.h" 33 34#define TNAME "aio_read/3-2.c" 35 36int main(void) 37{ 38 char tmpfname[256]; 39#define BUF_SIZE 1024 40 char buf[BUF_SIZE]; 41 int fd; 42 int ret; 43 struct aiocb aiocb; 44 45 if (sysconf(_SC_ASYNCHRONOUS_IO) < 200112L) 46 return PTS_UNSUPPORTED; 47 48 snprintf(tmpfname, sizeof(tmpfname), "/tmp/pts_aio_read_3_2_%d", 49 getpid()); 50 unlink(tmpfname); 51 fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, S_IRUSR | S_IWUSR); 52 if (fd == -1) { 53 printf(TNAME " Error at open(): %s\n", strerror(errno)); 54 exit(PTS_UNRESOLVED); 55 } 56 57 unlink(tmpfname); 58 59 if (write(fd, buf, BUF_SIZE / 2) != BUF_SIZE / 2) { 60 printf(TNAME " Error at write(): %s\n", strerror(errno)); 61 exit(PTS_UNRESOLVED); 62 } 63 64 /* try to read BUF_SIZE bytes whereas the file is BUF_SIZE/2 long */ 65 66 memset(&aiocb, 0, sizeof(struct aiocb)); 67 aiocb.aio_fildes = fd; 68 aiocb.aio_buf = buf; 69 aiocb.aio_nbytes = BUF_SIZE; 70 71 if (aio_read(&aiocb) == -1) { 72 printf(TNAME " Error at aio_read(): %s\n", strerror(errno)); 73 exit(PTS_FAIL); 74 } 75 76 /* Wait for request completion */ 77 do { 78 usleep(10000); 79 ret = aio_error(&aiocb); 80 } while (ret == EINPROGRESS); 81 82 /* error status shall be 0 and return status shall be BUF_SIZE/2 */ 83 if (ret != 0) { 84 printf(TNAME " Error at aio_error()\n"); 85 exit(PTS_FAIL); 86 } 87 88 if (aio_return(&aiocb) != BUF_SIZE / 2) { 89 printf(TNAME " Error at aio_return()\n"); 90 exit(PTS_FAIL); 91 } 92 93 close(fd); 94 printf("Test PASSED\n"); 95 return PTS_PASS; 96} 97