2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993, 1995
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Rick Macklem at The University of Guelph.
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11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
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16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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35 #ifndef _NFSSERVER_NFS_H_
36 #define _NFSSERVER_NFS_H_
42 #include <nfs/nfssvc.h>
45 * Tunable constants for nfs
48 #define NFS_TICKINTVL 10 /* Desired time for a tick (msec) */
49 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */
50 #define NFS_TIMEO (1 * NFS_HZ) /* Default timeout = 1 second */
51 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */
52 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */
53 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/
54 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */
55 #ifndef NFS_GATHERDELAY
56 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */
59 #define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */
65 #define NFS_SRVMAXDATA(n) \
66 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \
67 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA)
71 * The B_INVAFTERWRITE flag should be set to whatever is required by the
72 * buffer cache code to say "Invalidate the block after it is written back".
74 #define B_INVAFTERWRITE B_NOCACHE
77 * The IO_METASYNC flag should be implemented for local filesystems.
78 * (Until then, it is nothin at all.)
84 /* NFS state flags XXX -Wunused */
85 #define NFSRV_SNDLOCK 0x01000000 /* Send socket lock */
86 #define NFSRV_WANTSND 0x02000000 /* Want above */
89 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and
90 * mount_nfs should ever try and use it.
94 * Add a socket to monitor for NFS requests.
96 struct nfsd_addsock_args {
97 int sock; /* Socket to serve */
98 caddr_t name; /* Client addr for connection based sockets */
99 int namelen; /* Length of name */
103 * Start processing requests.
105 struct nfsd_nfsd_args {
106 const char *principal; /* GSS-API service principal name */
107 int minthreads; /* minimum service thread count */
108 int maxthreads; /* maximum service thread count */
112 * XXX to allow amd to include nfs.h without nfsproto.h
115 #include <nfsserver/nfsrvstats.h>
119 * vfs.nfsrv sysctl(3) identifiers
121 #define NFS_NFSRVSTATS 1 /* struct: struct nfsrvstats */
122 #define NFS_NFSPRIVPORT 2 /* int: prohibit nfs to resvports */
126 extern struct mtx nfsd_mtx;
127 #define NFSD_LOCK_ASSERT() mtx_assert(&nfsd_mtx, MA_OWNED)
128 #define NFSD_UNLOCK_ASSERT() mtx_assert(&nfsd_mtx, MA_NOTOWNED)
129 #define NFSD_LOCK_DONTCARE()
130 #define NFSD_LOCK() mtx_lock(&nfsd_mtx)
131 #define NFSD_UNLOCK() mtx_unlock(&nfsd_mtx)
133 #ifdef MALLOC_DECLARE
134 MALLOC_DECLARE(M_NFSRVDESC);
135 MALLOC_DECLARE(M_NFSD);
138 /* Forward declarations */
140 struct nfsrv_descript;
145 extern struct callout nfsrv_callout;
146 extern struct nfsrvstats nfsrvstats;
148 extern int nfsrv_ticks;
149 extern int nfsrvw_procrastinate;
150 extern int nfsrvw_procrastinate_v3;
151 extern int nfsrv_numnfsd;
153 /* Various values converted to XDR form. */
154 extern u_int32_t nfsrv_nfs_false, nfsrv_nfs_true, nfsrv_nfs_xdrneg1,
156 extern u_int32_t nfsrv_rpc_reply, nfsrv_rpc_msgdenied, nfsrv_rpc_mismatch,
158 extern u_int32_t nfsrv_rpc_auth_unix, nfsrv_rpc_msgaccepted, nfsrv_rpc_call,
161 /* Procedure table data */
162 extern const int nfsrvv2_procid[NFS_NPROCS];
163 extern const int nfsrv_nfsv3_procid[NFS_NPROCS];
164 extern int32_t (*nfsrv3_procs[NFS_NPROCS])(struct nfsrv_descript *nd,
165 struct nfssvc_sock *slp, struct mbuf **mreqp);
168 * A list of nfssvc_sock structures is maintained with all the sockets
169 * that require service by the nfsd.
171 #ifndef NFS_WDELAYHASHSIZ
172 #define NFS_WDELAYHASHSIZ 16 /* and with this */
174 #define NWDELAYHASH(sock, f) \
175 (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ])
178 * This structure is used by the server for describing each request.
180 struct nfsrv_descript {
181 struct mbuf *nd_mrep; /* Request mbuf list */
182 struct mbuf *nd_md; /* Current dissect mbuf */
183 struct mbuf *nd_mreq; /* Reply mbuf list */
184 struct sockaddr *nd_nam; /* and socket addr */
185 struct sockaddr *nd_nam2; /* return socket addr */
186 caddr_t nd_dpos; /* Current dissect pos */
187 u_int32_t nd_procnum; /* RPC # */
188 int nd_stable; /* storage type */
189 int nd_flag; /* nd_flag */
190 int nd_repstat; /* Reply status */
191 fhandle_t nd_fh; /* File handle */
192 struct ucred *nd_cr; /* Credentials */
193 int nd_credflavor; /* Security flavor */
196 /* Bits for "nd_flag" */
197 #define ND_NFSV3 0x08
203 #define WEBNFS_ESC_CHAR '%'
204 #define WEBNFS_SPECCHAR_START 0x80
206 #define WEBNFS_NATIVE_CHAR 0x80
209 * Possibly more here in the future.
213 * Macro for converting escape characters in WebNFS pathnames.
214 * Should really be in libkern.
218 ((c) >= 'a' ? ((c) - ('a' - 10)) : \
219 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0')))
220 #define HEXSTRTOI(p) \
221 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1]))
225 extern int nfs_debug;
226 #define NFS_DEBUG_ASYNCIO 1 /* asynchronous i/o */
227 #define NFS_DEBUG_WG 2 /* server write gathering */
228 #define NFS_DEBUG_RC 4 /* server request caching */
230 #define NFS_DPF(cat, args) \
232 if (nfs_debug & NFS_DEBUG_##cat) printf args; \
237 #define NFS_DPF(cat, args)
242 * The following flags can be passed to nfsrv_fhtovp() function.
244 /* Leave file system busy on success. */
245 #define NFSRV_FLAG_BUSY 0x01
247 struct mbuf *nfs_rephead(int, struct nfsrv_descript *, int, struct mbuf **,
249 void nfsm_srvfattr(struct nfsrv_descript *, struct vattr *,
251 void nfsm_srvwcc(struct nfsrv_descript *, int, struct vattr *, int,
252 struct vattr *, struct mbuf **, char **);
253 void nfsm_srvpostopattr(struct nfsrv_descript *, int, struct vattr *,
254 struct mbuf **, char **);
255 int nfs_namei(struct nameidata *, struct nfsrv_descript *, fhandle_t *,
256 int, struct nfssvc_sock *, struct sockaddr *, struct mbuf **,
257 caddr_t *, struct vnode **, int, struct vattr *, int *, int);
258 void nfsm_adj(struct mbuf *, int, int);
259 int nfsm_mbuftouio(struct mbuf **, struct uio *, int, caddr_t *);
260 void nfsrv_init(int);
261 int nfsrv_errmap(struct nfsrv_descript *, int);
262 void nfsrvw_sort(gid_t *, int);
264 int nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
266 int nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
268 int nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
270 int nfsrv_fhtovp(fhandle_t *, int, struct vnode **,
271 struct nfsrv_descript *, struct nfssvc_sock *, struct sockaddr *,
273 int nfsrv_setpublicfs(struct mount *, struct netexport *,
274 struct export_args *);
275 int nfs_ispublicfh(fhandle_t *);
276 int nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
278 int nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
280 int nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
282 int nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
284 int nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
286 int nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
288 int nfsrv_noop(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
290 int nfsrv_null(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
292 int nfsrv_pathconf(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
294 int nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
296 int nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
298 int nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
300 int nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
302 int nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
304 int nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
306 int nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
308 int nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
310 int nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
312 int nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
314 int nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
317 * #ifdef _SYS_SYSPROTO_H_ so that it is only defined when sysproto.h
318 * has been included, so that "struct nfssvc_args" is defined.
320 #ifdef _SYS_SYSPROTO_H_
321 int nfssvc_nfsserver(struct thread *, struct nfssvc_args *);