2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A/* Copyright (c) 1988 AT&T */
2N/A/* All Rights Reserved */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A#include "lint.h"
2N/A#include "file64.h"
2N/A#include "mtlib.h"
2N/A#include <sys/types.h>
2N/A#include <stdio.h>
2N/A#include <stdlib.h>
2N/A#include <thread.h>
2N/A#include <synch.h>
2N/A#include "stdiom.h"
2N/A
2N/Aint
2N/Asetvbuf(FILE *iop, char *abuf, int type, size_t size)
2N/A{
2N/A
2N/A Uchar *buf = (Uchar *)abuf;
2N/A Uchar *temp;
2N/A int sflag = iop->_flag & _IOMYBUF;
2N/A rmutex_t *lk;
2N/A int fd = GET_FD(iop);
2N/A
2N/A FLOCKFILE(lk, iop);
2N/A iop->_flag &= ~(_IOMYBUF | _IONBF | _IOLBF);
2N/A switch (type) {
2N/A /* note that the flags are the same as the possible values for type */
2N/A case _IONBF:
2N/A iop->_flag |= _IONBF; /* file is unbuffered */
2N/A#ifndef _STDIO_ALLOCATE
2N/A if (fd < 2) {
2N/A /* use special buffer for std{in,out} */
2N/A buf = (fd == 0) ? _sibuf : _sobuf;
2N/A size = BUFSIZ;
2N/A } else /* needed for ifdef */
2N/A#endif
2N/A if (fd < _NFILE) {
2N/A buf = _smbuf[fd];
2N/A size = _SMBFSZ - PUSHBACK;
2N/A } else
2N/A if ((buf = malloc(_SMBFSZ * sizeof (Uchar))) != NULL) {
2N/A iop->_flag |= _IOMYBUF;
2N/A size = _SMBFSZ - PUSHBACK;
2N/A } else {
2N/A FUNLOCKFILE(lk);
2N/A return (EOF);
2N/A }
2N/A break;
2N/A case _IOLBF:
2N/A case _IOFBF:
2N/A iop->_flag |= type; /* buffer file */
2N/A /*
2N/A * need at least an 8 character buffer for
2N/A * out_of_sync concerns.
2N/A */
2N/A if (size <= _SMBFSZ) {
2N/A size = BUFSIZ;
2N/A buf = NULL;
2N/A }
2N/A if (buf == NULL) {
2N/A if ((buf = malloc(sizeof (Uchar) *
2N/A (size + _SMBFSZ))) != NULL)
2N/A iop->_flag |= _IOMYBUF;
2N/A else {
2N/A FUNLOCKFILE(lk);
2N/A return (EOF);
2N/A }
2N/A }
2N/A else
2N/A size -= _SMBFSZ;
2N/A break;
2N/A default:
2N/A FUNLOCKFILE(lk);
2N/A return (EOF);
2N/A }
2N/A if (iop->_base != NULL && sflag)
2N/A free((char *)iop->_base - PUSHBACK);
2N/A temp = buf + PUSHBACK;
2N/A iop->_base = temp;
2N/A _setbufend(iop, temp + size);
2N/A iop->_ptr = temp;
2N/A iop->_cnt = 0;
2N/A FUNLOCKFILE(lk);
2N/A return (0);
2N/A}