1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #if !defined(lint) && defined(SCCSIDS) 30 static char sccsid[] = "@(#)rpc_td.c 1.32 89/03/16 Copyr 1988 Sun Micro"; 31 #endif 32 33 #include "mt.h" 34 #include "rpc_mt.h" 35 #include <stdio.h> 36 #include <rpc/rpc.h> 37 #include <rpc/trace.h> 38 #include <errno.h> 39 #include <tiuser.h> 40 #include <string.h> 41 #include <stropts.h> 42 #include <netinet/tcp.h> 43 #include <stdlib.h> 44 45 #define MAXOPTSIZE 64 46 47 int 48 __td_setnodelay(fd) 49 int fd; 50 { 51 int rval = 0; 52 static mutex_t td_opt_lock = DEFAULTMUTEX; 53 static struct t_optmgmt t_optreq, t_optret; 54 int state; 55 56 57 /* VARIABLES PROTECTED BY td_opt_lock: t_optreq, t_optret */ 58 59 trace2(TR__td_setnodelay, 0, fd); 60 61 if ((state = t_getstate(fd)) == -1) 62 return (-1); 63 64 mutex_lock(&td_opt_lock); 65 if ((state == T_IDLE) && (t_optreq.flags != T_NEGOTIATE)) { 66 int i = 1; 67 struct opthdr *opt; 68 69 t_optreq.flags = T_NEGOTIATE; 70 t_optreq.opt.maxlen = MAXOPTSIZE; 71 t_optreq.opt.buf = (char *)malloc(MAXOPTSIZE); 72 if (t_optreq.opt.buf == NULL) { 73 mutex_unlock(&td_opt_lock); 74 t_errno = TSYSERR; 75 return (-1); 76 } 77 opt = (struct opthdr *)(t_optreq.opt.buf); 78 opt->name = TCP_NODELAY; 79 opt->len = 4; 80 opt->level = IPPROTO_TCP; 81 (void) memcpy((caddr_t)(t_optreq.opt.buf + 82 sizeof (struct opthdr)), &i, sizeof (int)); 83 t_optreq.opt.len = (int)(sizeof (struct opthdr) + 84 sizeof (int)); 85 86 t_optret.opt.maxlen = MAXOPTSIZE; 87 t_optret.opt.len = 0; 88 t_optret.opt.buf = (char *)malloc(MAXOPTSIZE); 89 if (t_optret.opt.buf == NULL) { 90 mutex_unlock(&td_opt_lock); 91 free(t_optreq.opt.buf); 92 t_errno = TSYSERR; 93 return (-1); 94 } 95 } 96 97 if (state == T_IDLE) 98 rval = t_optmgmt(fd, &t_optreq, &t_optret); 99 100 mutex_unlock(&td_opt_lock); 101 trace2(TR__td_setnodelay, 1, fd); 102 return (rval); 103 } 104