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 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95
37 * $FreeBSD: releng/5.0/sys/nfs/nfs_common.h 88091 2001-12-18 01:22:09Z iedowse $
38 */
39
40
41 #ifndef _NFS_NFS_COMMON_H_
42 #define _NFS_NFS_COMMON_H_
43
44 extern enum vtype nv3tov_type[];
45 extern nfstype nfsv3_type[];
46
47 #define vtonfsv2_mode(t, m) \
48 txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : MAKEIMODE((t), (m)))
49
50 #define nfsv3tov_type(a) nv3tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
51 #define vtonfsv3_type(a) txdr_unsigned(nfsv3_type[((int32_t)(a))])
52
53 int nfs_adv(struct mbuf **, caddr_t *, int, int);
54 u_quad_t nfs_curusec(void);
55 void *nfsm_disct(struct mbuf **, caddr_t *, int, int);
56
57 /* ****************************** */
58 /* Build request/reply phase macros */
59
60 void *nfsm_build_xx(int s, struct mbuf **mb, caddr_t *bpos);
61
62 #define nfsm_build(c, s) \
63 (c)nfsm_build_xx((s), &mb, &bpos)
64
65 /* ****************************** */
66 /* Interpretation phase macros */
67
68 void *nfsm_dissect_xx(int s, struct mbuf **md, caddr_t *dpos);
69 int nfsm_strsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos);
70 int nfsm_adv_xx(int s, struct mbuf **md, caddr_t *dpos);
71
72 /* Error check helpers */
73 #define nfsm_dcheck(t1, mrep) \
74 do { \
75 if (t1 != 0) { \
76 error = t1; \
77 m_freem((mrep)); \
78 (mrep) = NULL; \
79 goto nfsmout; \
80 } \
81 } while (0)
82
83 #define nfsm_dcheckp(retp, mrep) \
84 do { \
85 if (retp == NULL) { \
86 error = EBADRPC; \
87 m_freem((mrep)); \
88 (mrep) = NULL; \
89 goto nfsmout; \
90 } \
91 } while (0)
92
93 #define nfsm_dissect(c, s) \
94 ({ \
95 void *ret; \
96 ret = nfsm_dissect_xx((s), &md, &dpos); \
97 nfsm_dcheckp(ret, mrep); \
98 (c)ret; \
99 })
100
101 #define nfsm_strsiz(s,m) \
102 do { \
103 int t1; \
104 t1 = nfsm_strsiz_xx(&(s), (m), &md, &dpos); \
105 nfsm_dcheck(t1, mrep); \
106 } while(0)
107
108 #define nfsm_mtouio(p,s) \
109 do {\
110 int32_t t1 = 0; \
111 if ((s) > 0) \
112 t1 = nfsm_mbuftouio(&md, (p), (s), &dpos); \
113 nfsm_dcheck(t1, mrep); \
114 } while (0)
115
116 #define nfsm_rndup(a) (((a)+3)&(~0x3))
117
118 #define nfsm_adv(s) \
119 do { \
120 int t1; \
121 t1 = nfsm_adv_xx((s), &md, &dpos); \
122 nfsm_dcheck(t1, mrep); \
123 } while (0)
124
125 #endif
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