FreeBSD/Linux Kernel Cross Reference
sys/nfs/nfs_common.h
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: src/sys/nfs/nfs_common.h,v 1.38 2005/07/14 20:08:26 ps Exp $
34 */
35
36
37 #ifndef _NFS_NFS_COMMON_H_
38 #define _NFS_NFS_COMMON_H_
39
40 extern enum vtype nv3tov_type[];
41 extern 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
49 int nfs_adv(struct mbuf **, caddr_t *, int, int);
50 u_quad_t nfs_curusec(void);
51 void *nfsm_disct(struct mbuf **, caddr_t *, int, int, int);
52
53 /* ****************************** */
54 /* Build request/reply phase macros */
55
56 void *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
64 void *nfsm_dissect_xx(int s, struct mbuf **md, caddr_t *dpos);
65 void *nfsm_dissect_xx_nonblock(int s, struct mbuf **md, caddr_t *dpos);
66 int nfsm_strsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos);
67 int nfsm_adv_xx(int s, struct mbuf **md, caddr_t *dpos);
68
69 /* Error check helpers */
70 #define nfsm_dcheck(t1, mrep) \
71 do { \
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) \
81 do { \
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) \
107 do { \
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) \
114 do {\
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) \
124 do { \
125 int t1; \
126 t1 = nfsm_adv_xx((s), &md, &dpos); \
127 nfsm_dcheck(t1, mrep); \
128 } while (0)
129
130 #ifdef __NO_STRICT_ALIGNMENT
131 #define nfsm_aligned(p, t) 1
132 #else
133 #define nfsm_aligned(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0)
134 #endif
135
136 #endif
137
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