1/* $NetBSD: nfs.h,v 1.81.2.1 2026/06/27 09:46:05 martin Exp $ */
2/*
3 * Copyright (c) 1989, 1993, 1995
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Rick Macklem at The University of Guelph.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)nfs.h 8.4 (Berkeley) 5/1/95
34 */
35
36#ifndef _NFS_NFS_H_
37#define _NFS_NFS_H_
38
39#ifdef _KERNEL
40#include <sys/condvar.h>
41#include <sys/fstypes.h>
42#include <sys/mbuf.h>
43#include <sys/mutex.h>
44#include <sys/rbtree.h>
45#endif
46
47#include <nfs/rpcv2.h>
48
49/*
50 * Tunable constants for nfs
51 */
52
53#define NFS_MAXIOVEC 34
54#define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */
55#define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */
56#define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */
57#define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */
58#define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */
59#define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/
60#define NFS_MAXREXMIT 100 /* Stop counting after this many */
61#define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */
62#define NFS_RETRANS 10 /* Num of retrans for soft mounts */
63#define NFS_MAXGRPS 16 /* Max. size of groups list */
64#ifndef NFS_MINATTRTIMO
65#define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */
66#endif
67#ifndef NFS_MAXATTRTIMO
68#define NFS_MAXATTRTIMO 60
69#endif
70#define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */
71#define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */
72#define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */
73
74#define NFS_CWNDSCALE 256
75#define NFS_MAXCWND (NFS_CWNDSCALE * 32)
76
77/*
78 * These can be overridden through <machine/param.h>, included via
79 * <sys/param.h>. This means that <sys/param.h> should always be
80 * included before this file.
81 */
82#ifndef NFS_WSIZE
83#define NFS_WSIZE 8192 /* Def. write data size */
84#endif
85#ifndef NFS_RSIZE
86#define NFS_RSIZE 8192 /* Def. read data size */
87#endif
88#ifndef NFS_READDIRSIZE
89#define NFS_READDIRSIZE 8192 /* Def. readdir size */
90#endif
91
92/*
93 * NFS client IO daemon threads. May be overridden by config options.
94 */
95#ifndef NFS_MAXASYNCDAEMON
96#define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runnable */
97#endif
98
99/*
100 * NFS client read-ahead. May be overridden by config options.
101 * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation
102 * requires one IO thread.
103 */
104#ifndef NFS_MAXRAHEAD
105#define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */
106#endif
107#define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */
108
109#define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */
110
111#define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */
112#define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */
113
114#ifdef _KERNEL
115extern int nfs_niothreads; /* Number of async_daemons desired */
116#ifndef NFS_DEFAULT_NIOTHREADS
117#define NFS_DEFAULT_NIOTHREADS 4
118#endif
119#endif
120#define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */
121#ifndef NFS_GATHERDELAY
122#define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */
123#endif
124
125/*
126 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for
127 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount
128 * of data in those buffers, and thus the minimum amount of data
129 * that you can request. NFS_DIRFRAGSIZ should be no smaller than
130 * DIRBLKSIZ.
131 */
132
133#define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */
134#define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */
135
136/*
137 * Maximum number of directory entries cached per NFS node, to avoid
138 * having this grow without bounds on very large directories. The
139 * minimum size to get reasonable performance for emulated binaries
140 * is the maximum number of entries that fits in NFS_DIRBLKSIZ.
141 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36.
142 */
143#define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14)
144
145/*
146 * Oddballs
147 */
148#define NFS_CMPFH(n, f, s) \
149 ((n)->n_fhsize == (s) && !memcmp((void *)(n)->n_fhp, (void *)(f), (s)))
150#ifdef NFS_V2_ONLY
151#define NFS_ISV3(v) (0)
152#else
153#define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
154#endif
155#define NFS_SRVMAXDATA(n) \
156 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \
157 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA)
158
159/*
160 * Use the vm_page flag reserved for pager use to indicate pages
161 * which have been written to the server but not yet committed.
162 */
163#define PG_NEEDCOMMIT PG_PAGER1
164
165/*
166 * The IO_METASYNC flag should be implemented for local file systems.
167 * (Until then, it is nothin at all.)
168 */
169#ifndef IO_METASYNC
170#define IO_METASYNC 0
171#endif
172
173/*
174 * Export arguments for local filesystem mount calls.
175 * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see
176 * 'struct mountd_exports_list' below).
177 * When modifying this structure, take care to also edit the
178 * nfs_update_exports_30 function in nfs_export.c accordingly to convert
179 * export_args to export_args30.
180 */
181struct export_args {
182 int ex_flags; /* export related flags */
183 uid_t ex_root; /* mapping for root uid */
184 struct uucred ex_anon; /* mapping for anonymous user */
185 struct sockaddr *ex_addr; /* net address to which exported */
186 int ex_addrlen; /* and the net address length */
187 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
188 int ex_masklen; /* and the smask length */
189 char *ex_indexfile; /* index file for WebNFS URLs */
190};
191
192/*
193 * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and
194 * mount_nfs should ever try and use it.
195 */
196struct nfsd_args {
197 int sock; /* Socket to serve */
198 void * name; /* Client addr for connection based sockets */
199 int namelen; /* Length of name */
200};
201
202struct nfsd_srvargs {
203 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */
204 uid_t nsd_uid; /* Effective uid mapped to cred */
205 u_int32_t nsd_haddr; /* Ip address of client */
206 struct uucred nsd_cr; /* Cred. uid maps to */
207 int nsd_authlen; /* Length of auth string (ret) */
208 u_char *nsd_authstr; /* Auth string (ret) */
209 int nsd_verflen; /* and the verfier */
210 u_char *nsd_verfstr;
211 struct timeval nsd_timestamp; /* timestamp from verifier */
212 u_int32_t nsd_ttl; /* credential ttl (sec) */
213 NFSKERBKEY_T nsd_key; /* Session key */
214};
215
216struct nfsd_cargs {
217 char *ncd_dirp; /* Mount dir path */
218 uid_t ncd_authuid; /* Effective uid */
219 int ncd_authtype; /* Type of authenticator */
220 u_int ncd_authlen; /* Length of authenticator string */
221 u_char *ncd_authstr; /* Authenticator string */
222 u_int ncd_verflen; /* and the verifier */
223 u_char *ncd_verfstr;
224 NFSKERBKEY_T ncd_key; /* Session key */
225};
226
227struct mountd_exports_list {
228 const char *mel_path;
229 size_t mel_nexports;
230 struct export_args *mel_exports;
231};
232
233/*
234 * try to keep nfsstats, which is exposed to userland via sysctl,
235 * compatible after NQNFS removal.
236 * 26 is the old value of NFS_NPROCS, which includes NQNFS procedures.
237 */
238#define NFSSTATS_NPROCS 26
239
240/*
241 * Stats structure
242 */
243struct nfsstats {
244 uint32_t attrcache_hits;
245 uint32_t attrcache_misses;
246 uint32_t lookupcache_hits;
247 uint32_t lookupcache_misses;
248 uint32_t direofcache_hits;
249 uint32_t direofcache_misses;
250 uint32_t biocache_reads;
251 uint32_t read_bios;
252 uint32_t read_physios;
253 uint32_t biocache_writes;
254 uint32_t write_bios;
255 uint32_t write_physios;
256 uint32_t biocache_readlinks;
257 uint32_t readlink_bios;
258 uint32_t biocache_readdirs;
259 uint32_t readdir_bios;
260 uint32_t rpccnt[NFSSTATS_NPROCS];
261 uint32_t rpcretries;
262 uint32_t srvrpccnt[NFSSTATS_NPROCS];
263 uint32_t srvrpc_errs;
264 uint32_t srv_errs;
265 uint32_t rpcrequests;
266 uint32_t rpctimeouts;
267 uint32_t rpcunexpected;
268 uint32_t rpcinvalid;
269 uint32_t srvcache_inproghits;
270 uint32_t srvcache_idemdonehits;
271 uint32_t srvcache_nonidemdonehits;
272 uint32_t srvcache_misses;
273 uint32_t __srvnqnfs_leases; /* unused */
274 uint32_t __srvnqnfs_maxleases; /* unused */
275 uint32_t __srvnqnfs_getleases; /* unused */
276 uint32_t srvvop_writes;
277};
278
279/*
280 * Flags for nfssvc() system call.
281 */
282#define NFSSVC_BIOD 0x002
283#define NFSSVC_NFSD 0x004
284#define NFSSVC_ADDSOCK 0x008
285#define NFSSVC_AUTHIN 0x010
286#define NFSSVC_GOTAUTH 0x040
287#define NFSSVC_AUTHINFAIL 0x080
288#define NFSSVC_MNTD 0x100
289#define NFSSVC_SETEXPORTSLIST 0x200
290#define NFSSVC_REPLACEEXPORTSLIST 0x400
291
292/*
293 * fs.nfs sysctl(3) identifiers
294 */
295#define NFS_NFSSTATS 1 /* struct: struct nfsstats */
296#define NFS_IOTHREADS 2 /* number of io threads */
297
298/*
299 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
300 * What should be in this set is open to debate, but I believe that since
301 * I/O system calls on ufs are never interrupted by signals the set should
302 * be minimal. My reasoning is that many current programs that use signals
303 * such as SIGALRM will not expect file I/O system calls to be interrupted
304 * by them and break.
305 */
306#ifdef _KERNEL
307
308struct uio; struct buf; struct vattr; struct nameidata; /* XXX */
309
310/*
311 * Socket errors ignored for connectionless sockets??
312 * For now, ignore them all
313 */
314#define NFSIGNORE_SOERROR(s, e) \
315 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
316 ((s) & PR_CONNREQUIRED) == 0)
317
318/*
319 * Nfs outstanding request list element
320 */
321struct nfsreq {
322 TAILQ_ENTRY(nfsreq) r_chain;
323 struct mbuf *r_mreq;
324 struct mbuf *r_mrep;
325 struct mbuf *r_md;
326 void * r_dpos;
327 struct nfsmount *r_nmp;
328 u_int32_t r_xid;
329 int r_flags; /* flags on request, see below */
330 int r_retry; /* max retransmission count */
331 int r_rexmit; /* current retrans count */
332 u_int32_t r_procnum; /* NFS procedure number */
333 int r_rtt; /* RTT for rpc */
334 struct lwp *r_lwp; /* LWP that did I/O system call */
335};
336
337/*
338 * Queue head for nfsreq's
339 */
340extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq;
341extern kmutex_t nfs_reqq_lock;
342
343/* Flag values for r_flags */
344#define R_TIMING 0x01 /* timing request (in mntp) */
345#define R_SENT 0x02 /* request has been sent */
346#define R_SOFTTERM 0x04 /* soft mnt, too many retries */
347#define R_INTR 0x08 /* intr mnt, signal pending */
348#define R_SOCKERR 0x10 /* Fatal error on socket */
349#define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */
350#define R_MUSTRESEND 0x40 /* Must resend request */
351#define R_REXMITTED 0x100 /* retransmitted after reconnect */
352
353/*
354 * A list of nfssvc_sock structures is maintained with all the sockets
355 * that require service by the nfsd.
356 * The nfsuid structs hang off of the nfssvc_sock structs in both lru
357 * and uid hash lists.
358 */
359#ifndef NFS_UIDHASHSIZ
360#define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */
361#endif
362#define NUIDHASH(sock, uid) \
363 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ])
364#ifndef NFS_WDELAYHASHSIZ
365#define NFS_WDELAYHASHSIZ 16 /* and with this */
366#endif
367#ifndef NFS_MUIDHASHSIZ
368#define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */
369#endif
370#define NMUIDHASH(nmp, uid) \
371 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ])
372
373#ifndef NFS_DIRHASHSIZ
374#define NFS_DIRHASHSIZ 64
375#endif
376#define NFSDIRHASH(np, off) \
377 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)])
378
379/*
380 * Macros for storing/retrieving cookies into directory buffers.
381 */
382#define NFS_STASHCOOKIE(dp,off) \
383 *((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))) = off
384#define NFS_GETCOOKIE(dp) \
385 (*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))))
386#define NFS_STASHCOOKIE32(dp, val) \
387 *((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \
388 sizeof (int))) = val
389#define NFS_GETCOOKIE32(dp) \
390 (*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \
391 sizeof (int))))
392
393/*
394 * Flags passed to nfs_bioread().
395 */
396#define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */
397
398/*
399 * Network address hash list element
400 */
401union nethostaddr {
402 u_int32_t had_inetaddr;
403 struct mbuf *had_nam;
404};
405
406struct nfsuid {
407 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */
408 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */
409 int nu_flag; /* Flags */
410 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */
411 kauth_cred_t nu_cr; /* Cred uid mapped to */
412 int nu_expire; /* Expiry time (sec) */
413 struct timeval nu_timestamp; /* Kerb. timestamp */
414 u_int32_t nu_nickname; /* Nickname on server */
415 NFSKERBKEY_T nu_key; /* and session key */
416};
417
418#define nu_inetaddr nu_haddr.had_inetaddr
419#define nu_nam nu_haddr.had_nam
420/* Bits for nu_flag */
421#define NU_INETADDR 0x1
422#define NU_NAM 0x2
423#define NU_NETFAM(u) \
424 (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_INET6)
425
426/*
427 * b: protected by SLP_BUSY
428 * g: protected by nfsd_lock
429 * s: protected by ns_lock
430 * a: protected by ns_alock
431 */
432
433struct nfssvc_sock {
434 kmutex_t ns_lock;
435 kmutex_t ns_alock;
436 kcondvar_t ns_cv; /* s: */
437 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */
438 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */
439 TAILQ_HEAD(, nfsuid) ns_uidlruhead;
440 struct file *ns_fp;
441 struct socket *ns_so;
442 struct mbuf *ns_nam;
443 struct mbuf *ns_raw; /* b: */
444 struct mbuf *ns_rawend; /* b: */
445 struct mbuf *ns_rec; /* b: */
446 struct mbuf *ns_recend; /* b: */
447 struct mbuf *ns_frag; /* b: */
448 int ns_flags; /* s: */
449 int ns_aflags; /* a: */
450 int ns_gflags; /* g: */
451 int ns_sflags; /* b: */
452 int ns_cc; /* b: */
453 int ns_reclen; /* b: */
454 int ns_frag_count; /* b: */
455 int ns_streamlen; /* b: */
456 int ns_numuids;
457 u_int32_t ns_sref; /* g: */
458 SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* s: send reply list */
459 LIST_HEAD(, nfsrv_descript) ns_tq; /* g: Write gather lists */
460 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ];
461 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; /* g: */
462};
463
464/* Bits for "ns_flags" */
465#define SLP_VALID 0x01
466#define SLP_BUSY 0x10
467#define SLP_SENDING 0x80
468
469/* Bits for "ns_aflags" */
470#define SLP_A_NEEDQ 0x01
471#define SLP_A_DISCONN 0x04
472
473/* Bits for "ns_gflags" */
474#define SLP_G_DOREC 0x02 /* on nfssvc_sockpending queue */
475
476/* Bits for "ns_sflags" */
477#define SLP_S_LASTFRAG 0x40
478
479extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead;
480extern struct nfssvc_sockhead nfssvc_sockpending;
481extern int nfssvc_sockhead_flag;
482#define SLP_INIT 0x01
483
484/*
485 * One of these structures is allocated for each nfsd.
486 */
487struct nfsd {
488 struct rb_node nfsd_node; /* Tree of all nfsd's */
489 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */
490 kcondvar_t nfsd_cv;
491 int nfsd_flag; /* NFSD_ flags */
492 struct nfssvc_sock *nfsd_slp; /* Current socket */
493 int nfsd_authlen; /* Authenticator len */
494 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */
495 int nfsd_verflen; /* and the Verifier */
496 u_char nfsd_verfstr[RPCVERF_MAXSIZ];
497 struct proc *nfsd_procp; /* Proc ptr */
498 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */
499 uint32_t nfsd_cookie; /* Userland cookie, fits 32bit ptr */
500};
501
502/* Bits for "nfsd_flag" */
503#define NFSD_NEEDAUTH 0x04
504#define NFSD_AUTHFAIL 0x08
505
506#define NFSD_MAXFHSIZE 64
507typedef struct nfsrvfh {
508 size_t nsfh_size;
509 union {
510 fhandle_t u_fh;
511 uint8_t u_opaque[NFSD_MAXFHSIZE];
512 } nsfh_u;
513} nfsrvfh_t;
514#define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size)
515#define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque)
516#define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh)
517
518/*
519 * This structure is used by the server for describing each request.
520 * Some fields are used only when write request gathering is performed.
521 */
522struct nfsrv_descript {
523 u_quad_t nd_time; /* Write deadline (usec) */
524 off_t nd_off; /* Start byte offset */
525 off_t nd_eoff; /* and end byte offset */
526 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */
527 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */
528 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */
529 SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */
530 struct mbuf *nd_mrep; /* Request mbuf list */
531 struct mbuf *nd_md; /* Current dissect mbuf */
532 struct mbuf *nd_mreq; /* Reply mbuf list */
533 struct mbuf *nd_nam; /* and socket addr */
534 struct mbuf *nd_nam2; /* return socket addr */
535 void * nd_dpos; /* Current dissect pos */
536 u_int32_t nd_procnum; /* RPC # */
537 int nd_stable; /* storage type */
538 int nd_flag; /* nd_flag */
539 int nd_len; /* Length of this write */
540 int nd_repstat; /* Reply status */
541 u_int32_t nd_retxid; /* Reply xid */
542 u_int32_t nd_duration; /* Lease duration */
543 struct timeval nd_starttime; /* Time RPC initiated */
544 nfsrvfh_t nd_fh; /* File handle */
545 kauth_cred_t nd_cr; /* Credentials */
546};
547
548/* Bits for "nd_flag" */
549#define ND_READ 0x01 /* Check lease for readers */
550#define ND_WRITE 0x02 /* Check lease for modifiers */
551#define ND_CHECK 0x04
552#define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK)
553#define ND_NFSV3 0x08
554#define ND_KERBNICK 0x20
555#define ND_KERBFULL 0x40
556#define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL)
557
558extern kmutex_t nfsd_lock;
559extern kcondvar_t nfsd_initcv;
560extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head;
561extern int nfsd_head_flag;
562#define NFSD_CHECKSLP 0x01
563
564extern struct mowner nfs_mowner;
565extern struct nfsstats nfsstats;
566extern int nfs_numasync;
567
568/*
569 * These macros compare nfsrv_descript structures.
570 */
571#define NFSW_CONTIG(o, n) \
572 ((o)->nd_eoff >= (n)->nd_off && \
573 !memcmp((void *)&(o)->nd_fh, (void *)&(n)->nd_fh, NFSX_V3FH))
574
575/*
576 * Defines for WebNFS
577 */
578
579#define WEBNFS_ESC_CHAR '%'
580#define WEBNFS_SPECCHAR_START 0x80
581
582#define WEBNFS_NATIVE_CHAR 0x80
583/*
584 * ..
585 * Possibly more here in the future.
586 */
587
588/*
589 * Macro for converting escape characters in WebNFS pathnames.
590 * Should really be in libkern.
591 */
592
593#define HEXTOC(c) \
594 ((c) >= 'a' ? ((c) - ('a' - 10)) : \
595 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0')))
596#define HEXSTRTOI(p) \
597 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1]))
598
599/*
600 * Structure holding information for a publicly exported filesystem
601 * (WebNFS). Currently the specs allow just for one such filesystem.
602 */
603struct nfs_public {
604 int np_valid; /* Do we hold valid information */
605 fhandle_t *np_handle; /* Filehandle for pub fs (internal) */
606 struct mount *np_mount; /* Mountpoint of exported fs */
607 char *np_index; /* Index file */
608};
609#endif /* _KERNEL */
610
611#endif /* _NFS_NFS_H */