1/* $OpenBSD: nfsm_subs.h,v 1.11 2000/01/05 20:50:52 millert Exp $ */ 2/* $NetBSD: nfsm_subs.h,v 1.10 1996/03/20 21:59:56 fvdl Exp $ */ 3 4/*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * copyright (c) 2003 8 * the regents of the university of michigan 9 * all rights reserved 10 * 11 * permission is granted to use, copy, create derivative works and redistribute 12 * this software and such derivative works for any purpose, so long as the name 13 * of the university of michigan is not used in any advertising or publicity 14 * pertaining to the use or distribution of this software without specific, 15 * written prior authorization. if the above copyright notice or any other 16 * identification of the university of michigan is included in any copy of any 17 * portion of this software, then the disclaimer below must also be included. 18 * 19 * this software is provided as is, without representation from the university 20 * of michigan as to its fitness for any purpose, and without warranty by the 21 * university of michigan of any kind, either express or implied, including 22 * without limitation the implied warranties of merchantability and fitness for 23 * a particular purpose. the regents of the university of michigan shall not be 24 * liable for any damages, including special, indirect, incidental, or 25 * consequential damages, with respect to any claim arising out of or in 26 * connection with the use of the software, even if it has been or is hereafter 27 * advised of the possibility of such damages. 28 */ 29 30/*- 31 * Copyright (c) 1989, 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * This code is derived from software contributed to Berkeley by 35 * Rick Macklem at The University of Guelph. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 */ 61 62 63#ifndef _RPC_RPCM_SUBS_H_ 64#define _RPC_RPCM_SUBS_H_ 65 66 67/* 68 * Now for the macros that do the simple stuff and call the functions 69 * for the hard stuff. 70 * These macros use several vars. declared in rpcm_reqhead and these 71 * vars. must not be used elsewhere unless you are careful not to corrupt 72 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries 73 * that may be used so long as the value is not expected to retained 74 * after a macro. 75 * I know, this is kind of dorkey, but it makes the actual op functions 76 * fairly clean and deals with the mess caused by the xdr discriminating 77 * unions. 78 */ 79 80#define rpcm_build(a,c,s) \ 81 { if ((s) > M_TRAILINGSPACE(mb)) { \ 82 mb2 = m_get(M_WAITOK, MT_DATA); \ 83 if ((s) > MLEN) \ 84 panic("build > MLEN"); \ 85 mb->m_next = mb2; \ 86 mb = mb2; \ 87 mb->m_len = 0; \ 88 bpos = mtod(mb, caddr_t); \ 89 } \ 90 (a) = (c)(bpos); \ 91 mb->m_len += (s); \ 92 bpos += (s); } 93 94#define rpcm_dissect(a, c, s) \ 95 { t1 = mtod(md, caddr_t)+md->m_len-dpos; \ 96 if (t1 >= (s)) { \ 97 (a) = (c)(dpos); \ 98 dpos += (s); \ 99 } else if ((t1 = rpcm_disct(&md, &dpos, (s), t1, &cp2)) != 0){ \ 100 error = t1; \ 101 goto rpcmout; \ 102 } else { \ 103 (a) = (c)cp2; \ 104 } } 105 106#if 0 107#define rpcm_mtouio(p,s) \ 108 if ((s) > 0 && \ 109 (t1 = rpcm_mbuftouio(&md,(p),(s),&dpos)) != 0) { \ 110 error = t1; \ 111 goto rpcmout; \ 112 } 113#endif 114 115#define rpcm_rndup(a) (((a)+3)&(~0x3)) 116 117#define rpcm_adv(s) \ 118 { t1 = mtod(md, caddr_t)+md->m_len-dpos; \ 119 if (t1 >= (s)) { \ 120 dpos += (s); \ 121 } else if ((t1 = rpc_adv(&md, &dpos, (s), t1)) != 0) { \ 122 error = t1; \ 123 goto rpcmout; \ 124 } } 125 126#define RPCMADV(m, s) (m)->m_data += (s) 127 128#endif /* _RPC_RPCM_SUBS_H_ */ 129