FreeBSD/Linux Kernel Cross Reference
sys/rpc/rpcm_subs.h
1 /* $FreeBSD: src/sys/rpc/rpcm_subs.h,v 1.3 2005/01/07 02:29:21 imp Exp $ */
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 MGET(mb2, M_WAIT, 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
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