nfs_common.h revision 138463 
1/*
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 *	@(#)nfsm_subs.h	8.2 (Berkeley) 3/30/95
33 * $FreeBSD: head/sys/nfs/nfs_common.h 138463 2004-12-06 17:33:52Z ps $
34 */
35
36
37#ifndef _NFS_NFS_COMMON_H_
38#define _NFS_NFS_COMMON_H_
39
40extern enum vtype nv3tov_type[];
41extern nfstype nfsv3_type[];
42
43#define	vtonfsv2_mode(t, m) \
44    txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : MAKEIMODE((t), (m)))
45
46#define	nfsv3tov_type(a)	nv3tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
47#define	vtonfsv3_type(a)	txdr_unsigned(nfsv3_type[((int32_t)(a))])
48
49int	nfs_adv(struct mbuf **, caddr_t *, int, int);
50u_quad_t nfs_curusec(void);
51void	*nfsm_disct(struct mbuf **, caddr_t *, int, int, int);
52
53/* ****************************** */
54/* Build request/reply phase macros */
55
56void	*nfsm_build_xx(int s, struct mbuf **mb, caddr_t *bpos);
57
58#define	nfsm_build(c, s) \
59	(c)nfsm_build_xx((s), &mb, &bpos)
60
61/* ****************************** */
62/* Interpretation phase macros */
63
64void	*nfsm_dissect_xx(int s, struct mbuf **md, caddr_t *dpos);
65void	*nfsm_dissect_xx_nonblock(int s, struct mbuf **md, caddr_t *dpos);
66int	nfsm_strsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos);
67int	nfsm_adv_xx(int s, struct mbuf **md, caddr_t *dpos);
68
69/* Error check helpers */
70#define nfsm_dcheck(t1, mrep) \
71do { \
72	if (t1 != 0) { \
73		error = t1; \
74		m_freem((mrep)); \
75		(mrep) = NULL; \
76		goto nfsmout; \
77	} \
78} while (0)
79
80#define nfsm_dcheckp(retp, mrep) \
81do { \
82	if (retp == NULL) { \
83		error = EBADRPC; \
84		m_freem((mrep)); \
85		(mrep) = NULL; \
86		goto nfsmout; \
87	} \
88} while (0)
89
90#define	nfsm_dissect(c, s) \
91({ \
92	void *ret; \
93	ret = nfsm_dissect_xx((s), &md, &dpos); \
94	nfsm_dcheckp(ret, mrep); \
95	(c)ret; \
96})
97
98#define	nfsm_dissect_nonblock(c, s) \
99({ \
100	void *ret; \
101	ret = nfsm_dissect_xx_nonblock((s), &md, &dpos); \
102	nfsm_dcheckp(ret, mrep); \
103	(c)ret; \
104})
105
106#define	nfsm_strsiz(s,m) \
107do { \
108	int t1; \
109	t1 = nfsm_strsiz_xx(&(s), (m), &md, &dpos); \
110	nfsm_dcheck(t1, mrep); \
111} while(0)
112
113#define nfsm_mtouio(p,s) \
114do {\
115	int32_t t1 = 0; \
116	if ((s) > 0) \
117		t1 = nfsm_mbuftouio(&md, (p), (s), &dpos); \
118	nfsm_dcheck(t1, mrep); \
119} while (0)
120
121#define nfsm_rndup(a)	(((a)+3)&(~0x3))
122
123#define	nfsm_adv(s) \
124do { \
125	int t1; \
126	t1 = nfsm_adv_xx((s), &md, &dpos); \
127	nfsm_dcheck(t1, mrep); \
128} while (0)
129
130#endif
131