2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
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
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25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95
36 #ifndef _NFSCLIENT_NFSM_SUBS_H_
37 #define _NFSCLIENT_NFSM_SUBS_H_
39 #include <nfs/nfs_common.h>
41 #define nfsv2tov_type(a) nv2tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
47 * These macros do strange and peculiar things to mbuf chains for
48 * the assistance of the nfs code. To attempt to use them for any
49 * other purpose will be dangerous. (they make weird assumptions)
53 * First define what the actual subs. return
55 u_int32_t nfs_xid_gen(void);
56 struct mbuf *nfsm_reqhead(struct vnode *vp, u_long procid, int hsiz);
57 struct mbuf *nfsm_rpchead(struct ucred *cr, int nmflag, int procid,
58 int auth_type, int auth_len,
59 struct mbuf *mrest, int mrest_len,
60 struct mbuf **mbp, u_int32_t **xidpp);
62 #define M_HASCL(m) ((m)->m_flags & M_EXT)
63 #define NFSMINOFF(m) \
66 (m)->m_data = (m)->m_ext.ext_buf; \
67 else if ((m)->m_flags & M_PKTHDR) \
68 (m)->m_data = (m)->m_pktdat; \
70 (m)->m_data = (m)->m_dat; \
72 #define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \
73 (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN))
76 * Now for the macros that do the simple stuff and call the functions
78 * These macros use several vars. declared in nfsm_reqhead and these
79 * vars. must not be used elsewhere unless you are careful not to corrupt
80 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries
81 * that may be used so long as the value is not expected to retained
83 * I know, this is kind of dorkey, but it makes the actual op functions
84 * fairly clean and deals with the mess caused by the xdr discriminating
89 /* *********************************** */
90 /* Request generation phase macros */
92 int nfsm_fhtom_xx(struct vnode *v, int v3, struct mbuf **mb,
94 void nfsm_v3attrbuild_xx(struct vattr *va, int full, struct mbuf **mb,
96 int nfsm_strtom_xx(const char *a, int s, int m, struct mbuf **mb,
99 #define nfsm_bcheck(t1, mreq) \
108 #define nfsm_fhtom(v, v3) \
111 t1 = nfsm_fhtom_xx((v), (v3), &mb, &bpos); \
112 nfsm_bcheck(t1, mreq); \
115 /* If full is true, set all fields, otherwise just set mode and time fields */
116 #define nfsm_v3attrbuild(a, full) \
117 nfsm_v3attrbuild_xx(a, full, &mb, &bpos)
119 #define nfsm_uiotom(p, s) \
122 t1 = nfsm_uiotombuf((p), &mb, (s), &bpos); \
123 nfsm_bcheck(t1, mreq); \
126 #define nfsm_strtom(a, s, m) \
129 t1 = nfsm_strtom_xx((a), (s), (m), &mb, &bpos); \
130 nfsm_bcheck(t1, mreq); \
133 /* *********************************** */
134 /* Send the request */
136 #define nfsm_request(v, t, p, c) \
139 nfs_set_sigmask(p, &oldset); \
140 error = nfs_request((v), mreq, (t), (p), (c), &mrep, &md, &dpos); \
141 nfs_restore_sigmask(p, &oldset); \
143 if (error & NFSERR_RETERR) \
144 error &= ~NFSERR_RETERR; \
150 #define nfsm_request_mnt(n, t, p, c) \
152 error = nfs4_request_mnt((n), mreq, (t), (p), (c), &mrep, &md, &dpos); \
154 if (error & NFSERR_RETERR) \
155 error &= ~NFSERR_RETERR; \
161 /* *********************************** */
162 /* Reply interpretation phase macros */
164 int nfsm_mtofh_xx(struct vnode *d, struct vnode **v, int v3, int *f,
165 struct mbuf **md, caddr_t *dpos);
166 int nfsm_getfh_xx(nfsfh_t **f, int *s, int v3, struct mbuf **md,
168 int nfsm_loadattr_xx(struct vnode **v, struct vattr *va, struct mbuf **md,
170 int nfsm_postop_attr_xx(struct vnode **v, int *f, struct mbuf **md,
172 int nfsm_wcc_data_xx(struct vnode **v, int *f, struct mbuf **md,
175 #define nfsm_mtofh(d, v, v3, f) \
178 t1 = nfsm_mtofh_xx((d), &(v), (v3), &(f), &md, &dpos); \
179 nfsm_dcheck(t1, mrep); \
182 #define nfsm_getfh(f, s, v3) \
185 t1 = nfsm_getfh_xx(&(f), &(s), (v3), &md, &dpos); \
186 nfsm_dcheck(t1, mrep); \
189 #define nfsm_loadattr(v, a) \
192 t1 = nfsm_loadattr_xx(&v, a, &md, &dpos); \
193 nfsm_dcheck(t1, mrep); \
196 #define nfsm_postop_attr(v, f) \
199 t1 = nfsm_postop_attr_xx(&v, &f, &md, &dpos); \
200 nfsm_dcheck(t1, mrep); \
203 /* Used as (f) for nfsm_wcc_data() */
204 #define NFSV3_WCCRATTR 0
205 #define NFSV3_WCCCHK 1
207 #define nfsm_wcc_data(v, f) \
210 t1 = nfsm_wcc_data_xx(&v, &f, &md, &dpos); \
211 nfsm_dcheck(t1, mrep); \