1/* $FreeBSD: releng/10.3/sys/rpc/rpcm_subs.h 248195 2013-03-12 12:17:19Z glebius $ */ 2/* $OpenBSD: nfsm_subs.h,v 1.11 2000/01/05 20:50:52 millert Exp $ */ 3/* $NetBSD: nfsm_subs.h,v 1.10 1996/03/20 21:59:56 fvdl Exp $ */ 4 5/*- 6 * copyright (c) 2003 7 * the regents of the university of michigan 8 * all rights reserved 9 * 10 * permission is granted to use, copy, create derivative works and redistribute 11 * this software and such derivative works for any purpose, so long as the name 12 * of the university of michigan is not used in any advertising or publicity 13 * pertaining to the use or distribution of this software without specific, 14 * written prior authorization. if the above copyright notice or any other 15 * identification of the university of michigan is included in any copy of any 16 * portion of this software, then the disclaimer below must also be included. 17 * 18 * this software is provided as is, without representation from the university 19 * of michigan as to its fitness for any purpose, and without warranty by the 20 * university of michigan of any kind, either express or implied, including 21 * without limitation the implied warranties of merchantability and fitness for 22 * a particular purpose. the regents of the university of michigan shall not be 23 * liable for any damages, including special, indirect, incidental, or 24 * consequential damages, with respect to any claim arising out of or in 25 * connection with the use of the software, even if it has been or is hereafter 26 * advised of the possibility of such damages. 27 */ 28 29/*- 30 * Copyright (c) 1989, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * This code is derived from software contributed to Berkeley by 34 * Rick Macklem at The University of Guelph. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95 61 */ 62 63 64#ifndef _RPC_RPCM_SUBS_H_ 65#define _RPC_RPCM_SUBS_H_ 66 67 68/* 69 * Now for the macros that do the simple stuff and call the functions 70 * for the hard stuff. 71 * These macros use several vars. declared in rpcm_reqhead and these 72 * vars. must not be used elsewhere unless you are careful not to corrupt 73 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries 74 * that may be used so long as the value is not expected to retained 75 * after a macro. 76 * I know, this is kind of dorkey, but it makes the actual op functions 77 * fairly clean and deals with the mess caused by the xdr discriminating 78 * unions. 79 */ 80 81#define rpcm_build(a,c,s) \ 82 { if ((s) > M_TRAILINGSPACE(mb)) { \ 83 mb2 = m_get(M_WAITOK, MT_DATA); \ 84 if ((s) > MLEN) \ 85 panic("build > MLEN"); \ 86 mb->m_next = mb2; \ 87 mb = mb2; \ 88 mb->m_len = 0; \ 89 bpos = mtod(mb, caddr_t); \ 90 } \ 91 (a) = (c)(bpos); \ 92 mb->m_len += (s); \ 93 bpos += (s); } 94 95#define rpcm_dissect(a, c, s) \ 96 { t1 = mtod(md, caddr_t)+md->m_len-dpos; \ 97 if (t1 >= (s)) { \ 98 (a) = (c)(dpos); \ 99 dpos += (s); \ 100 } else if ((t1 = rpcm_disct(&md, &dpos, (s), t1, &cp2)) != 0){ \ 101 error = t1; \ 102 goto rpcmout; \ 103 } else { \ 104 (a) = (c)cp2; \ 105 } } 106 107#if 0 108#define rpcm_mtouio(p,s) \ 109 if ((s) > 0 && \ 110 (t1 = rpcm_mbuftouio(&md,(p),(s),&dpos)) != 0) { \ 111 error = t1; \ 112 goto rpcmout; \ 113 } 114#endif 115 116#define rpcm_rndup(a) (((a)+3)&(~0x3)) 117 118#define rpcm_adv(s) \ 119 { t1 = mtod(md, caddr_t)+md->m_len-dpos; \ 120 if (t1 >= (s)) { \ 121 dpos += (s); \ 122 } else if ((t1 = rpc_adv(&md, &dpos, (s), t1)) != 0) { \ 123 error = t1; \ 124 goto rpcmout; \ 125 } } 126 127#define RPCMADV(m, s) (m)->m_data += (s) 128 129#endif /* _RPC_RPCM_SUBS_H_ */ 130