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 2004 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 #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 30*0Sstevel@tonic-gate /* All Rights Reserved */ 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include "synonyms.h" 34*0Sstevel@tonic-gate #include "file64.h" 35*0Sstevel@tonic-gate #include "mtlib.h" 36*0Sstevel@tonic-gate #include <sys/types.h> 37*0Sstevel@tonic-gate #include <stdio.h> 38*0Sstevel@tonic-gate #include <stdlib.h> 39*0Sstevel@tonic-gate #include <thread.h> 40*0Sstevel@tonic-gate #include <synch.h> 41*0Sstevel@tonic-gate #include "stdiom.h" 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate int 44*0Sstevel@tonic-gate setvbuf(FILE *iop, char *abuf, int type, size_t size) 45*0Sstevel@tonic-gate { 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate Uchar *buf = (Uchar *)abuf; 48*0Sstevel@tonic-gate Uchar *temp; 49*0Sstevel@tonic-gate int sflag = iop->_flag & _IOMYBUF; 50*0Sstevel@tonic-gate rmutex_t *lk; 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate FLOCKFILE(lk, iop); 53*0Sstevel@tonic-gate iop->_flag &= ~(_IOMYBUF | _IONBF | _IOLBF); 54*0Sstevel@tonic-gate switch (type) { 55*0Sstevel@tonic-gate /* note that the flags are the same as the possible values for type */ 56*0Sstevel@tonic-gate case _IONBF: 57*0Sstevel@tonic-gate iop->_flag |= _IONBF; /* file is unbuffered */ 58*0Sstevel@tonic-gate #ifndef _STDIO_ALLOCATE 59*0Sstevel@tonic-gate if (iop->_file < 2) { 60*0Sstevel@tonic-gate /* use special buffer for std{in,out} */ 61*0Sstevel@tonic-gate buf = (iop->_file == 0) ? _sibuf : _sobuf; 62*0Sstevel@tonic-gate size = BUFSIZ; 63*0Sstevel@tonic-gate } else /* needed for ifdef */ 64*0Sstevel@tonic-gate #endif 65*0Sstevel@tonic-gate if (iop->_file < _NFILE) { 66*0Sstevel@tonic-gate buf = _smbuf[iop->_file]; 67*0Sstevel@tonic-gate size = _SMBFSZ - PUSHBACK; 68*0Sstevel@tonic-gate } else 69*0Sstevel@tonic-gate if ((buf = malloc(_SMBFSZ * sizeof (Uchar))) != NULL) { 70*0Sstevel@tonic-gate iop->_flag |= _IOMYBUF; 71*0Sstevel@tonic-gate size = _SMBFSZ - PUSHBACK; 72*0Sstevel@tonic-gate } else { 73*0Sstevel@tonic-gate FUNLOCKFILE(lk); 74*0Sstevel@tonic-gate return (EOF); 75*0Sstevel@tonic-gate } 76*0Sstevel@tonic-gate break; 77*0Sstevel@tonic-gate case _IOLBF: 78*0Sstevel@tonic-gate case _IOFBF: 79*0Sstevel@tonic-gate iop->_flag |= type; /* buffer file */ 80*0Sstevel@tonic-gate /* 81*0Sstevel@tonic-gate * need at least an 8 character buffer for 82*0Sstevel@tonic-gate * out_of_sync concerns. 83*0Sstevel@tonic-gate */ 84*0Sstevel@tonic-gate if (size <= _SMBFSZ) { 85*0Sstevel@tonic-gate size = BUFSIZ; 86*0Sstevel@tonic-gate buf = NULL; 87*0Sstevel@tonic-gate } 88*0Sstevel@tonic-gate if (buf == NULL) { 89*0Sstevel@tonic-gate if ((buf = malloc(sizeof (Uchar) * 90*0Sstevel@tonic-gate (size + _SMBFSZ))) != NULL) 91*0Sstevel@tonic-gate iop->_flag |= _IOMYBUF; 92*0Sstevel@tonic-gate else { 93*0Sstevel@tonic-gate FUNLOCKFILE(lk); 94*0Sstevel@tonic-gate return (EOF); 95*0Sstevel@tonic-gate } 96*0Sstevel@tonic-gate } 97*0Sstevel@tonic-gate else 98*0Sstevel@tonic-gate size -= _SMBFSZ; 99*0Sstevel@tonic-gate break; 100*0Sstevel@tonic-gate default: 101*0Sstevel@tonic-gate FUNLOCKFILE(lk); 102*0Sstevel@tonic-gate return (EOF); 103*0Sstevel@tonic-gate } 104*0Sstevel@tonic-gate if (iop->_base != NULL && sflag) 105*0Sstevel@tonic-gate free((char *)iop->_base - PUSHBACK); 106*0Sstevel@tonic-gate temp = buf + PUSHBACK; 107*0Sstevel@tonic-gate iop->_base = temp; 108*0Sstevel@tonic-gate _setbufend(iop, temp + size); 109*0Sstevel@tonic-gate iop->_ptr = temp; 110*0Sstevel@tonic-gate iop->_cnt = 0; 111*0Sstevel@tonic-gate FUNLOCKFILE(lk); 112*0Sstevel@tonic-gate return (0); 113*0Sstevel@tonic-gate } 114