10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
51846Scraigm * Common Development and Distribution License (the "License").
61846Scraigm * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
211846Scraigm
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
301846Scraigm #pragma ident "%Z%%M% %I% %E% SMI"
311846Scraigm
32*6812Sraf #include "lint.h"
330Sstevel@tonic-gate #include "file64.h"
340Sstevel@tonic-gate #include "mtlib.h"
350Sstevel@tonic-gate #include <sys/types.h>
360Sstevel@tonic-gate #include <stdio.h>
370Sstevel@tonic-gate #include <stdlib.h>
380Sstevel@tonic-gate #include <thread.h>
390Sstevel@tonic-gate #include <synch.h>
400Sstevel@tonic-gate #include "stdiom.h"
410Sstevel@tonic-gate
420Sstevel@tonic-gate int
setvbuf(FILE * iop,char * abuf,int type,size_t size)430Sstevel@tonic-gate setvbuf(FILE *iop, char *abuf, int type, size_t size)
440Sstevel@tonic-gate {
450Sstevel@tonic-gate
460Sstevel@tonic-gate Uchar *buf = (Uchar *)abuf;
470Sstevel@tonic-gate Uchar *temp;
480Sstevel@tonic-gate int sflag = iop->_flag & _IOMYBUF;
490Sstevel@tonic-gate rmutex_t *lk;
501846Scraigm int fd = GET_FD(iop);
510Sstevel@tonic-gate
520Sstevel@tonic-gate FLOCKFILE(lk, iop);
530Sstevel@tonic-gate iop->_flag &= ~(_IOMYBUF | _IONBF | _IOLBF);
540Sstevel@tonic-gate switch (type) {
550Sstevel@tonic-gate /* note that the flags are the same as the possible values for type */
560Sstevel@tonic-gate case _IONBF:
570Sstevel@tonic-gate iop->_flag |= _IONBF; /* file is unbuffered */
580Sstevel@tonic-gate #ifndef _STDIO_ALLOCATE
591846Scraigm if (fd < 2) {
600Sstevel@tonic-gate /* use special buffer for std{in,out} */
611846Scraigm buf = (fd == 0) ? _sibuf : _sobuf;
620Sstevel@tonic-gate size = BUFSIZ;
630Sstevel@tonic-gate } else /* needed for ifdef */
640Sstevel@tonic-gate #endif
651846Scraigm if (fd < _NFILE) {
661846Scraigm buf = _smbuf[fd];
670Sstevel@tonic-gate size = _SMBFSZ - PUSHBACK;
680Sstevel@tonic-gate } else
690Sstevel@tonic-gate if ((buf = malloc(_SMBFSZ * sizeof (Uchar))) != NULL) {
700Sstevel@tonic-gate iop->_flag |= _IOMYBUF;
710Sstevel@tonic-gate size = _SMBFSZ - PUSHBACK;
720Sstevel@tonic-gate } else {
730Sstevel@tonic-gate FUNLOCKFILE(lk);
740Sstevel@tonic-gate return (EOF);
750Sstevel@tonic-gate }
760Sstevel@tonic-gate break;
770Sstevel@tonic-gate case _IOLBF:
780Sstevel@tonic-gate case _IOFBF:
790Sstevel@tonic-gate iop->_flag |= type; /* buffer file */
800Sstevel@tonic-gate /*
810Sstevel@tonic-gate * need at least an 8 character buffer for
820Sstevel@tonic-gate * out_of_sync concerns.
830Sstevel@tonic-gate */
840Sstevel@tonic-gate if (size <= _SMBFSZ) {
850Sstevel@tonic-gate size = BUFSIZ;
860Sstevel@tonic-gate buf = NULL;
870Sstevel@tonic-gate }
880Sstevel@tonic-gate if (buf == NULL) {
890Sstevel@tonic-gate if ((buf = malloc(sizeof (Uchar) *
900Sstevel@tonic-gate (size + _SMBFSZ))) != NULL)
910Sstevel@tonic-gate iop->_flag |= _IOMYBUF;
920Sstevel@tonic-gate else {
930Sstevel@tonic-gate FUNLOCKFILE(lk);
940Sstevel@tonic-gate return (EOF);
950Sstevel@tonic-gate }
960Sstevel@tonic-gate }
970Sstevel@tonic-gate else
980Sstevel@tonic-gate size -= _SMBFSZ;
990Sstevel@tonic-gate break;
1000Sstevel@tonic-gate default:
1010Sstevel@tonic-gate FUNLOCKFILE(lk);
1020Sstevel@tonic-gate return (EOF);
1030Sstevel@tonic-gate }
1040Sstevel@tonic-gate if (iop->_base != NULL && sflag)
1050Sstevel@tonic-gate free((char *)iop->_base - PUSHBACK);
1060Sstevel@tonic-gate temp = buf + PUSHBACK;
1070Sstevel@tonic-gate iop->_base = temp;
1080Sstevel@tonic-gate _setbufend(iop, temp + size);
1090Sstevel@tonic-gate iop->_ptr = temp;
1100Sstevel@tonic-gate iop->_cnt = 0;
1110Sstevel@tonic-gate FUNLOCKFILE(lk);
1120Sstevel@tonic-gate return (0);
1130Sstevel@tonic-gate }
114