The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/rpc/rpcm_subs.h

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    1 /* $FreeBSD: releng/12.0/sys/rpc/rpcm_subs.h 326023 2017-11-20 19:43:44Z pfg $ */
    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  * SPDX-License-Identifier: BSD-3-Clause
    7  *
    8  * copyright (c) 2003
    9  * the regents of the university of michigan
   10  * all rights reserved
   11  * 
   12  * permission is granted to use, copy, create derivative works and redistribute
   13  * this software and such derivative works for any purpose, so long as the name
   14  * of the university of michigan is not used in any advertising or publicity
   15  * pertaining to the use or distribution of this software without specific,
   16  * written prior authorization.  if the above copyright notice or any other
   17  * identification of the university of michigan is included in any copy of any
   18  * portion of this software, then the disclaimer below must also be included.
   19  * 
   20  * this software is provided as is, without representation from the university
   21  * of michigan as to its fitness for any purpose, and without warranty by the
   22  * university of michigan of any kind, either express or implied, including
   23  * without limitation the implied warranties of merchantability and fitness for
   24  * a particular purpose. the regents of the university of michigan shall not be
   25  * liable for any damages, including special, indirect, incidental, or
   26  * consequential damages, with respect to any claim arising out of or in
   27  * connection with the use of the software, even if it has been or is hereafter
   28  * advised of the possibility of such damages.
   29  */
   30 
   31 /*-
   32  * Copyright (c) 1989, 1993
   33  *      The Regents of the University of California.  All rights reserved.
   34  *
   35  * This code is derived from software contributed to Berkeley by
   36  * Rick Macklem at The University of Guelph.
   37  *
   38  * Redistribution and use in source and binary forms, with or without
   39  * modification, are permitted provided that the following conditions
   40  * are met:
   41  * 1. Redistributions of source code must retain the above copyright
   42  *    notice, this list of conditions and the following disclaimer.
   43  * 2. Redistributions in binary form must reproduce the above copyright
   44  *    notice, this list of conditions and the following disclaimer in the
   45  *    documentation and/or other materials provided with the distribution.
   46  * 3. Neither the name of the University nor the names of its contributors
   47  *    may be used to endorse or promote products derived from this software
   48  *    without specific prior written permission.
   49  *
   50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   60  * SUCH DAMAGE.
   61  *
   62  *      @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95
   63  */
   64 
   65 
   66 #ifndef _RPC_RPCM_SUBS_H_
   67 #define _RPC_RPCM_SUBS_H_
   68 
   69 
   70 /*
   71  * Now for the macros that do the simple stuff and call the functions
   72  * for the hard stuff.
   73  * These macros use several vars. declared in rpcm_reqhead and these
   74  * vars. must not be used elsewhere unless you are careful not to corrupt
   75  * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries
   76  * that may be used so long as the value is not expected to retained
   77  * after a macro.
   78  * I know, this is kind of dorkey, but it makes the actual op functions
   79  * fairly clean and deals with the mess caused by the xdr discriminating
   80  * unions.
   81  */
   82 
   83 #define rpcm_build(a,c,s) \
   84                 { if ((s) > M_TRAILINGSPACE(mb)) { \
   85                         mb2 = m_get(M_WAITOK, MT_DATA); \
   86                         if ((s) > MLEN) \
   87                                 panic("build > MLEN"); \
   88                         mb->m_next = mb2; \
   89                         mb = mb2; \
   90                         mb->m_len = 0; \
   91                         bpos = mtod(mb, caddr_t); \
   92                 } \
   93                 (a) = (c)(bpos); \
   94                 mb->m_len += (s); \
   95                 bpos += (s); }
   96 
   97 #define rpcm_dissect(a, c, s) \
   98                 { t1 = mtod(md, caddr_t)+md->m_len-dpos; \
   99                 if (t1 >= (s)) { \
  100                         (a) = (c)(dpos); \
  101                         dpos += (s); \
  102                 } else if ((t1 = rpcm_disct(&md, &dpos, (s), t1, &cp2)) != 0){ \
  103                         error = t1; \
  104                         goto rpcmout; \
  105                 } else { \
  106                         (a) = (c)cp2; \
  107                 } }
  108 
  109 #if 0
  110 #define rpcm_mtouio(p,s) \
  111                 if ((s) > 0 && \
  112                    (t1 = rpcm_mbuftouio(&md,(p),(s),&dpos)) != 0) { \
  113                         error = t1; \
  114                         goto rpcmout; \
  115                 }
  116 #endif
  117 
  118 #define rpcm_rndup(a)   (((a)+3)&(~0x3))
  119 
  120 #define rpcm_adv(s) \
  121                 { t1 = mtod(md, caddr_t)+md->m_len-dpos; \
  122                 if (t1 >= (s)) { \
  123                         dpos += (s); \
  124                 } else if ((t1 = rpc_adv(&md, &dpos, (s), t1)) != 0) { \
  125                         error = t1; \
  126                         goto rpcmout; \
  127                 } }
  128 
  129 #define RPCMADV(m, s)   (m)->m_data += (s)
  130 
  131 #endif /* _RPC_RPCM_SUBS_H_ */

Cache object: 33678f3a80a27988f80a6252759c74a3


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