17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5a5f69788Scraigm * Common Development and Distribution License (the "License"). 6a5f69788Scraigm * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21a5f69788Scraigm 227c478bd9Sstevel@tonic-gate /* 23*7257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 287c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 297c478bd9Sstevel@tonic-gate 30a5f69788Scraigm #pragma ident "%Z%%M% %I% %E% SMI" 31a5f69788Scraigm 32*7257d1b4Sraf #include "lint.h" 337c478bd9Sstevel@tonic-gate #include "file64.h" 347c478bd9Sstevel@tonic-gate #include "mtlib.h" 357c478bd9Sstevel@tonic-gate #include <sys/types.h> 367c478bd9Sstevel@tonic-gate #include <stdio.h> 377c478bd9Sstevel@tonic-gate #include <stdlib.h> 387c478bd9Sstevel@tonic-gate #include <thread.h> 397c478bd9Sstevel@tonic-gate #include <synch.h> 407c478bd9Sstevel@tonic-gate #include "stdiom.h" 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate int 437c478bd9Sstevel@tonic-gate setvbuf(FILE *iop, char *abuf, int type, size_t size) 447c478bd9Sstevel@tonic-gate { 457c478bd9Sstevel@tonic-gate 467c478bd9Sstevel@tonic-gate Uchar *buf = (Uchar *)abuf; 477c478bd9Sstevel@tonic-gate Uchar *temp; 487c478bd9Sstevel@tonic-gate int sflag = iop->_flag & _IOMYBUF; 497c478bd9Sstevel@tonic-gate rmutex_t *lk; 50a5f69788Scraigm int fd = GET_FD(iop); 517c478bd9Sstevel@tonic-gate 527c478bd9Sstevel@tonic-gate FLOCKFILE(lk, iop); 537c478bd9Sstevel@tonic-gate iop->_flag &= ~(_IOMYBUF | _IONBF | _IOLBF); 547c478bd9Sstevel@tonic-gate switch (type) { 557c478bd9Sstevel@tonic-gate /* note that the flags are the same as the possible values for type */ 567c478bd9Sstevel@tonic-gate case _IONBF: 577c478bd9Sstevel@tonic-gate iop->_flag |= _IONBF; /* file is unbuffered */ 587c478bd9Sstevel@tonic-gate #ifndef _STDIO_ALLOCATE 59a5f69788Scraigm if (fd < 2) { 607c478bd9Sstevel@tonic-gate /* use special buffer for std{in,out} */ 61a5f69788Scraigm buf = (fd == 0) ? _sibuf : _sobuf; 627c478bd9Sstevel@tonic-gate size = BUFSIZ; 637c478bd9Sstevel@tonic-gate } else /* needed for ifdef */ 647c478bd9Sstevel@tonic-gate #endif 65a5f69788Scraigm if (fd < _NFILE) { 66a5f69788Scraigm buf = _smbuf[fd]; 677c478bd9Sstevel@tonic-gate size = _SMBFSZ - PUSHBACK; 687c478bd9Sstevel@tonic-gate } else 697c478bd9Sstevel@tonic-gate if ((buf = malloc(_SMBFSZ * sizeof (Uchar))) != NULL) { 707c478bd9Sstevel@tonic-gate iop->_flag |= _IOMYBUF; 717c478bd9Sstevel@tonic-gate size = _SMBFSZ - PUSHBACK; 727c478bd9Sstevel@tonic-gate } else { 737c478bd9Sstevel@tonic-gate FUNLOCKFILE(lk); 747c478bd9Sstevel@tonic-gate return (EOF); 757c478bd9Sstevel@tonic-gate } 767c478bd9Sstevel@tonic-gate break; 777c478bd9Sstevel@tonic-gate case _IOLBF: 787c478bd9Sstevel@tonic-gate case _IOFBF: 797c478bd9Sstevel@tonic-gate iop->_flag |= type; /* buffer file */ 807c478bd9Sstevel@tonic-gate /* 817c478bd9Sstevel@tonic-gate * need at least an 8 character buffer for 827c478bd9Sstevel@tonic-gate * out_of_sync concerns. 837c478bd9Sstevel@tonic-gate */ 847c478bd9Sstevel@tonic-gate if (size <= _SMBFSZ) { 857c478bd9Sstevel@tonic-gate size = BUFSIZ; 867c478bd9Sstevel@tonic-gate buf = NULL; 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate if (buf == NULL) { 897c478bd9Sstevel@tonic-gate if ((buf = malloc(sizeof (Uchar) * 907c478bd9Sstevel@tonic-gate (size + _SMBFSZ))) != NULL) 917c478bd9Sstevel@tonic-gate iop->_flag |= _IOMYBUF; 927c478bd9Sstevel@tonic-gate else { 937c478bd9Sstevel@tonic-gate FUNLOCKFILE(lk); 947c478bd9Sstevel@tonic-gate return (EOF); 957c478bd9Sstevel@tonic-gate } 967c478bd9Sstevel@tonic-gate } 977c478bd9Sstevel@tonic-gate else 987c478bd9Sstevel@tonic-gate size -= _SMBFSZ; 997c478bd9Sstevel@tonic-gate break; 1007c478bd9Sstevel@tonic-gate default: 1017c478bd9Sstevel@tonic-gate FUNLOCKFILE(lk); 1027c478bd9Sstevel@tonic-gate return (EOF); 1037c478bd9Sstevel@tonic-gate } 1047c478bd9Sstevel@tonic-gate if (iop->_base != NULL && sflag) 1057c478bd9Sstevel@tonic-gate free((char *)iop->_base - PUSHBACK); 1067c478bd9Sstevel@tonic-gate temp = buf + PUSHBACK; 1077c478bd9Sstevel@tonic-gate iop->_base = temp; 1087c478bd9Sstevel@tonic-gate _setbufend(iop, temp + size); 1097c478bd9Sstevel@tonic-gate iop->_ptr = temp; 1107c478bd9Sstevel@tonic-gate iop->_cnt = 0; 1117c478bd9Sstevel@tonic-gate FUNLOCKFILE(lk); 1127c478bd9Sstevel@tonic-gate return (0); 1137c478bd9Sstevel@tonic-gate } 114