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 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