2 * Copyright (c) 1989, 1993, 1995
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.
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.
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
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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
36 * @(#)nfs.h 8.4 (Berkeley) 5/1/95
40 #ifndef _NFSCLIENT_NFS_H_
41 #define _NFSCLIENT_NFS_H_
47 #include <nfsclient/nfsargs.h>
50 * Tunable constants for nfs
53 #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */
54 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */
55 #define NFS_TIMEO (1 * NFS_HZ) /* Default timeout = 1 second */
56 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */
57 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */
58 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/
59 #define NFS_MAXREXMIT 100 /* Stop counting after this many */
60 #define NFS_RETRANS 10 /* Num of retrans for soft mounts */
61 #define NFS_MAXGRPS 16 /* Max. size of groups list */
62 #ifndef NFS_MINATTRTIMO
63 #define NFS_MINATTRTIMO 3 /* VREG attrib cache timeout in sec */
65 #ifndef NFS_MAXATTRTIMO
66 #define NFS_MAXATTRTIMO 60
68 #ifndef NFS_MINDIRATTRTIMO
69 #define NFS_MINDIRATTRTIMO 30 /* VDIR attrib cache timeout in sec */
71 #ifndef NFS_MAXDIRATTRTIMO
72 #define NFS_MAXDIRATTRTIMO 60
74 #define NFS_WSIZE 8192 /* Def. write data size <= 8192 */
75 #define NFS_RSIZE 8192 /* Def. read data size <= 8192 */
76 #define NFS_READDIRSIZE 8192 /* Def. readdir size */
77 #define NFS_DEFRAHEAD 1 /* Def. read ahead # blocks */
78 #define NFS_MAXRAHEAD 4 /* Max. read ahead # blocks */
79 #define NFS_MAXASYNCDAEMON 64 /* Max. number async_daemons runnable */
80 #define NFS_DIRBLKSIZ 4096 /* Must be a multiple of DIRBLKSIZ */
82 #define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */
84 #define NFS_MAXDEADTHRESH 9 /* How long till we say 'server not responding' */
89 #define NFS_CMPFH(n, f, s) \
90 ((n)->n_fhsize == (s) && !bcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s)))
91 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
93 #define NFSSTA_HASWRITEVERF 0x00040000 /* Has write verifier for V3 */
94 #define NFSSTA_GOTFSINFO 0x00100000 /* Got the V3 fsinfo */
95 #define NFSSTA_SNDLOCK 0x01000000 /* Send socket lock */
96 #define NFSSTA_WANTSND 0x02000000 /* Want above */
97 #define NFSSTA_RCVLOCK 0x04000000 /* Rcv socket lock */
98 #define NFSSTA_WANTRCV 0x08000000 /* Want above */
101 * XXX to allow amd to include nfs.h without nfsproto.h
104 #include <nfsclient/nfsstats.h>
107 * Flags for nfsclnt() system call.
109 #define NFSCLNT_LOCKDANS 0x200
112 * vfs.nfs sysctl(3) identifiers
114 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */
118 #ifdef MALLOC_DECLARE
119 MALLOC_DECLARE(M_NFSREQ);
120 MALLOC_DECLARE(M_NFSDIROFF);
121 MALLOC_DECLARE(M_NFSBIGFH);
122 MALLOC_DECLARE(M_NFSHASH);
125 extern uma_zone_t nfsmount_zone;
127 extern struct callout_handle nfs_timer_handle;
128 extern struct nfsstats nfsstats;
130 extern int nfs_numasync;
131 extern int nfs_pbuf_freecnt;
132 extern int nfs_ticks;
134 /* Data constants in XDR form */
135 extern u_int32_t nfs_true, nfs_false, nfs_xdrneg1;
136 extern u_int32_t rpc_reply, rpc_msgdenied, rpc_mismatch, rpc_vers;
137 extern u_int32_t rpc_auth_unix, rpc_msgaccepted, rpc_call, rpc_autherr;
139 extern int nfsv3_procid[NFS_NPROCS];
147 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
148 * What should be in this set is open to debate, but I believe that since
149 * I/O system calls on ufs are never interrupted by signals the set should
150 * be minimal. My reasoning is that many current programs that use signals
151 * such as SIGALRM will not expect file I/O system calls to be interrupted
154 #define NFSINT_SIGMASK(set) \
155 (SIGISMEMBER(set, SIGINT) || SIGISMEMBER(set, SIGTERM) || \
156 SIGISMEMBER(set, SIGHUP) || SIGISMEMBER(set, SIGKILL) || \
157 SIGISMEMBER(set, SIGQUIT))
160 * Socket errors ignored for connectionless sockets??
161 * For now, ignore them all
163 #define NFSIGNORE_SOERROR(s, e) \
164 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
165 ((s) & PR_CONNREQUIRED) == 0)
168 * Nfs outstanding request list element
171 TAILQ_ENTRY(nfsreq) r_chain;
176 struct nfsmount *r_nmp;
179 int r_flags; /* flags on request, see below */
180 int r_retry; /* max retransmission count */
181 int r_rexmit; /* current retrans count */
182 int r_timer; /* tick counter on reply */
183 u_int32_t r_procnum; /* NFS procedure number */
184 int r_rtt; /* RTT for rpc */
185 struct thread *r_td; /* Proc that did I/O system call */
189 * Queue head for nfsreq's
191 extern TAILQ_HEAD(nfs_reqq, nfsreq) nfs_reqq;
193 /* Flag values for r_flags */
194 #define R_TIMING 0x01 /* timing request (in mntp) */
195 #define R_SENT 0x02 /* request has been sent */
196 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */
197 #define R_INTR 0x08 /* intr mnt, signal pending */
198 #define R_SOCKERR 0x10 /* Fatal error on socket */
199 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */
200 #define R_MUSTRESEND 0x40 /* Must resend request */
201 #define R_GETONEREP 0x80 /* Probe for one reply only */
203 extern struct nfsnodehashhead *nfsnodehashtbl;
204 extern u_long nfsnodehash;
206 #define NFSNOHASH(fhsum) \
207 (&nfsnodehashtbl[(fhsum) & nfsnodehash])
213 #define WEBNFS_ESC_CHAR '%'
214 #define WEBNFS_SPECCHAR_START 0x80
216 #define WEBNFS_NATIVE_CHAR 0x80
219 * Possibly more here in the future.
223 * Macro for converting escape characters in WebNFS pathnames.
224 * Should really be in libkern.
228 ((c) >= 'a' ? ((c) - ('a' - 10)) : \
229 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0')))
230 #define HEXSTRTOI(p) \
231 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1]))
235 extern int nfs_debug;
236 #define NFS_DEBUG_ASYNCIO 1 /* asynchronous i/o */
237 #define NFS_DEBUG_WG 2 /* server write gathering */
238 #define NFS_DEBUG_RC 4 /* server request caching */
240 #define NFS_DPF(cat, args) \
242 if (nfs_debug & NFS_DEBUG_##cat) printf args; \
247 #define NFS_DPF(cat, args)
251 int nfs_init(struct vfsconf *vfsp);
252 int nfs_uninit(struct vfsconf *vfsp);
253 int nfs_mountroot(struct mount *mp, struct thread *td);
254 int nfs_send(struct socket *, struct sockaddr *, struct mbuf *,
256 int nfs_sndlock(struct nfsreq *);
257 void nfs_sndunlock(struct nfsreq *);
258 int nfs_vinvalbuf(struct vnode *, int, struct ucred *, struct thread *,
260 int nfs_readrpc(struct vnode *, struct uio *, struct ucred *);
261 int nfs_writerpc(struct vnode *, struct uio *, struct ucred *, int *,
263 int nfs_commit(struct vnode *vp, u_quad_t offset, int cnt,
264 struct ucred *cred, struct thread *td);
265 int nfs_readdirrpc(struct vnode *, struct uio *, struct ucred *);
266 int nfs_nfsiodnew(void);
267 int nfs_asyncio(struct buf *, struct ucred *, struct thread *);
268 int nfs_doio(struct buf *, struct ucred *, struct thread *);
269 int nfs_readlinkrpc(struct vnode *, struct uio *, struct ucred *);
270 int nfs_sigintr(struct nfsmount *, struct nfsreq *, struct proc *);
271 int nfs_readdirplusrpc(struct vnode *, struct uio *, struct ucred *);
272 int nfs_request(struct vnode *, struct mbuf *, int, struct thread *,
273 struct ucred *, struct mbuf **, struct mbuf **, caddr_t *);
274 int nfs_loadattrcache(struct vnode **, struct mbuf **, caddr_t *,
275 struct vattr *, int);
276 int nfsm_mbuftouio(struct mbuf **, struct uio *, int, caddr_t *);
277 void nfs_nhinit(void);
278 int nfs_nmcancelreqs(struct nfsmount *);
279 void nfs_timer(void*);
280 int nfs_connect(struct nfsmount *, struct nfsreq *);
281 void nfs_disconnect(struct nfsmount *);
282 void nfs_safedisconnect(struct nfsmount *);
283 int nfs_getattrcache(struct vnode *, struct vattr *);
284 int nfsm_strtmbuf(struct mbuf **, char **, const char *, long);
285 int nfs_bioread(struct vnode *, struct uio *, int, struct ucred *);
286 int nfsm_uiotombuf(struct uio *, struct mbuf **, int, caddr_t *);
287 void nfs_clearcommit(struct mount *);
288 int nfs_writebp(struct buf *, int, struct thread *);
289 int nfs_fsinfo(struct nfsmount *, struct vnode *, struct ucred *,
291 int nfs_meta_setsize (struct vnode *, struct ucred *,
292 struct thread *, u_quad_t);