1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 1986 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /* Copyright (c) 1984 AT&T */
28*0Sstevel@tonic-gate /* All Rights Reserved */
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 1.2 */
31*0Sstevel@tonic-gate
32*0Sstevel@tonic-gate /*LINTLIBRARY*/
33*0Sstevel@tonic-gate #include <stdio.h>
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate extern void free();
36*0Sstevel@tonic-gate extern unsigned char (*_smbuf)[_SBFSIZ];
37*0Sstevel@tonic-gate extern char *malloc();
38*0Sstevel@tonic-gate extern void _getsmbuf();
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate int
setvbuf(iop,buf,type,size)41*0Sstevel@tonic-gate setvbuf(iop, buf, type, size)
42*0Sstevel@tonic-gate register FILE *iop;
43*0Sstevel@tonic-gate register char *buf;
44*0Sstevel@tonic-gate register int type;
45*0Sstevel@tonic-gate register int size;
46*0Sstevel@tonic-gate {
47*0Sstevel@tonic-gate register int fno = fileno(iop); /* file number */
48*0Sstevel@tonic-gate
49*0Sstevel@tonic-gate if(iop->_base != NULL && iop->_flag & _IOMYBUF)
50*0Sstevel@tonic-gate free((char*)iop->_base);
51*0Sstevel@tonic-gate iop->_flag &= ~(_IOMYBUF | _IONBF | _IOLBF);
52*0Sstevel@tonic-gate switch (type) {
53*0Sstevel@tonic-gate /*note that the flags are the same as the possible values for type*/
54*0Sstevel@tonic-gate case _IONBF:
55*0Sstevel@tonic-gate /* file is unbuffered except in fastio */
56*0Sstevel@tonic-gate iop->_flag |= _IONBF;
57*0Sstevel@tonic-gate /* use small buffers reserved for this */
58*0Sstevel@tonic-gate iop->_base = _smbuf[fno];
59*0Sstevel@tonic-gate iop->_bufsiz = _SBFSIZ;
60*0Sstevel@tonic-gate break;
61*0Sstevel@tonic-gate case _IOLBF:
62*0Sstevel@tonic-gate case _IOFBF:
63*0Sstevel@tonic-gate if (size < 0)
64*0Sstevel@tonic-gate return -1;
65*0Sstevel@tonic-gate iop->_flag |= type;
66*0Sstevel@tonic-gate size = (size == 0) ? BUFSIZ : size;
67*0Sstevel@tonic-gate /*
68*0Sstevel@tonic-gate * need eight characters beyond bufend for stdio slop
69*0Sstevel@tonic-gate */
70*0Sstevel@tonic-gate if (size <= 8) {
71*0Sstevel@tonic-gate size = BUFSIZ;
72*0Sstevel@tonic-gate buf = NULL;
73*0Sstevel@tonic-gate }
74*0Sstevel@tonic-gate if (buf == NULL) {
75*0Sstevel@tonic-gate size += 8;
76*0Sstevel@tonic-gate buf = malloc((unsigned)size);
77*0Sstevel@tonic-gate iop->_flag |= _IOMYBUF;
78*0Sstevel@tonic-gate }
79*0Sstevel@tonic-gate iop->_base = (unsigned char *)buf;
80*0Sstevel@tonic-gate iop->_bufsiz = size - 8;
81*0Sstevel@tonic-gate break;
82*0Sstevel@tonic-gate default:
83*0Sstevel@tonic-gate return -1;
84*0Sstevel@tonic-gate }
85*0Sstevel@tonic-gate iop->_ptr = iop->_base;
86*0Sstevel@tonic-gate iop->_cnt = 0;
87*0Sstevel@tonic-gate return 0;
88*0Sstevel@tonic-gate }
89