1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * The intent here is to provide a means to make the order of 32 * bytes in an io-stream correspond to the order of the bytes 33 * in the memory while doing the io a `word' at a time. 34 */ 35 36 #pragma weak _getw = getw 37 38 #include "lint.h" 39 #include "file64.h" 40 #include "mtlib.h" 41 #include <stdio.h> 42 #include <thread.h> 43 #include <synch.h> 44 #include "stdiom.h" 45 46 /* Read sizeof(int) characters from stream and return these in an int */ 47 int getw(FILE * stream)48getw(FILE *stream) 49 { 50 int w; 51 char *s = (char *)&w; 52 int i = sizeof (int); 53 int ret; 54 rmutex_t *lk; 55 56 FLOCKFILE(lk, stream); 57 while (--i >= 0 && !(stream->_flag & (_IOERR | _IOEOF))) 58 *s++ = getc_unlocked(stream); 59 ret = ((stream->_flag & (_IOERR | _IOEOF)) ? EOF : w); 60 FUNLOCKFILE(lk); 61 return (ret); 62 } 63