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.
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9 * modification, are permitted provided that the following conditions
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12 * notice, this list of conditions and the following disclaimer.
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32 * @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95
36 #ifndef _NFSSERVER_NFSM_SUBS_H_
37 #define _NFSSERVER_NFSM_SUBS_H_
39 #include <nfs/nfs_common.h>
41 #define nfstov_mode(a) (fxdr_unsigned(u_int32_t, (a)) & ALLPERMS)
44 * These macros do strange and peculiar things to mbuf chains for
45 * the assistance of the nfs code. To attempt to use them for any
46 * other purpose will be dangerous. (they make weird assumptions)
50 * First define what the actual subs. return
53 #define M_HASCL(m) ((m)->m_flags & M_EXT)
54 #define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \
55 (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN))
58 * Now for the macros that do the simple stuff and call the functions
60 * These macros use several vars. declared in nfsm_reqhead and these
61 * vars. must not be used elsewhere unless you are careful not to corrupt
62 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries
63 * that may be used so long as the value is not expected to retained
65 * I know, this is kind of dorkey, but it makes the actual op functions
66 * fairly clean and deals with the mess caused by the xdr discriminating
72 /* ************************************* */
73 /* Dissection phase macros */
75 int nfsm_srvstrsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos);
76 int nfsm_srvnamesiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos);
77 int nfsm_srvnamesiz0_xx(int *s, int m, struct mbuf **md, caddr_t *dpos);
78 int nfsm_srvmtofh_xx(fhandle_t *f, int v3, struct mbuf **md, caddr_t *dpos);
79 int nfsm_srvsattr_xx(struct vattr *a, struct mbuf **md, caddr_t *dpos);
81 #define nfsm_srvstrsiz(s, m) \
84 t1 = nfsm_srvstrsiz_xx(&(s), (m), &md, &dpos); \
91 #define nfsm_srvnamesiz(s) \
94 t1 = nfsm_srvnamesiz_xx(&(s), NFS_MAXNAMLEN, &md, &dpos); \
101 #define nfsm_srvpathsiz(s) \
104 t1 = nfsm_srvnamesiz0_xx(&(s), NFS_MAXPATHLEN, &md, &dpos); \
111 #define nfsm_srvmtofh(f) \
114 t1 = nfsm_srvmtofh_xx((f), nfsd->nd_flag & ND_NFSV3, &md, &dpos); \
121 /* XXX why is this different? */
122 #define nfsm_srvsattr(a) \
125 t1 = nfsm_srvsattr_xx((a), &md, &dpos); \
134 /* ************************************* */
135 /* Prepare the reply */
137 #define nfsm_reply(s) \
139 if (mrep != NULL) { \
143 mreq = nfs_rephead((s), nfsd, error, &mb, &bpos); \
145 if (error == EBADRPC) { \
151 #define nfsm_writereply(s) \
153 mreq = nfs_rephead((s), nfsd, error, &mb, &bpos); \
156 /* ************************************* */
157 /* Reply phase macros - add additional reply info */
159 void nfsm_srvfhtom_xx(fhandle_t *f, int v3, struct mbuf **mb,
161 void nfsm_srvpostop_fh_xx(fhandle_t *f, struct mbuf **mb, caddr_t *bpos);
162 void nfsm_clget_xx(u_int32_t **tl, struct mbuf *mb, struct mbuf **mp,
163 char **bp, char **be, caddr_t bpos);
165 #define nfsm_srvfhtom(f, v3) \
166 nfsm_srvfhtom_xx((f), (v3), &mb, &bpos)
168 #define nfsm_srvpostop_fh(f) \
169 nfsm_srvpostop_fh_xx((f), &mb, &bpos)
171 #define nfsm_srvwcc_data(br, b, ar, a) \
172 nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos)
174 #define nfsm_srvpostop_attr(r, a) \
175 nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos)
177 #define nfsm_srvfillattr(a, f) \
178 nfsm_srvfattr(nfsd, (a), (f))
181 nfsm_clget_xx(&tl, mb, &mp, &bp, &be, bpos)