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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1986 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * University Copyright- Copyright (c) 1982, 1986, 1988 29 * The Regents of the University of California 30 * All Rights Reserved 31 * 32 * University Acknowledgment- Portions of this document are derived from 33 * software developed by the University of California, Berkeley, and its 34 * contributors. 35 */ 36 37 #pragma ident "%Z%%M% %I% %E% SMI" 38 /* from UCB 4.2 83/02/27 */ 39 40 #include <stdio.h> 41 42 extern void free(); 43 extern int isatty(); 44 extern unsigned char (*_smbuf)[_SBFSIZ]; 45 extern void _getsmbuf(); 46 47 void 48 setbuffer(iop, buf, size) 49 register FILE *iop; 50 char *buf; 51 int size; 52 { 53 register int fno = fileno(iop); /* file number */ 54 55 if (iop->_base != NULL && iop->_flag&_IOMYBUF) 56 free((char *)iop->_base); 57 iop->_flag &= ~(_IOMYBUF|_IONBF|_IOLBF); 58 if ((iop->_base = (unsigned char *)buf) == NULL) { 59 iop->_flag |= _IONBF; /* file unbuffered except in fastio */ 60 /* use small buffers reserved for this */ 61 iop->_base = _smbuf[fno]; 62 iop->_bufsiz = _SBFSIZ; 63 } else { 64 /* regular buffered I/O, specified buffer size */ 65 if (size <= 0) 66 return; 67 iop->_bufsiz = size; 68 } 69 iop->_ptr = iop->_base; 70 iop->_cnt = 0; 71 } 72 73 /* 74 * set line buffering 75 */ 76 setlinebuf(iop) 77 register FILE *iop; 78 { 79 register unsigned char *buf; 80 extern char *malloc(); 81 82 fflush(iop); 83 setbuffer(iop, (unsigned char *)NULL, 0); 84 buf = (unsigned char *)malloc(128); 85 if (buf != NULL) { 86 setbuffer(iop, buf, 128); 87 iop->_flag |= _IOLBF|_IOMYBUF; 88 } 89 } 90