FreeBSD/Linux Kernel Cross Reference
sys/nfs/nfs.h
1 /* $NetBSD: nfs.h,v 1.60 2006/09/04 08:27:49 yamt 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 /*
40 * Tunable constants for nfs
41 */
42
43 #define NFS_MAXIOVEC 34
44 #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */
45 #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */
46 #define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */
47 #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */
48 #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */
49 #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/
50 #define NFS_MAXREXMIT 100 /* Stop counting after this many */
51 #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */
52 #define NFS_RETRANS 10 /* Num of retrans for soft mounts */
53 #define NFS_MAXGRPS 16 /* Max. size of groups list */
54 #ifndef NFS_MINATTRTIMO
55 #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */
56 #endif
57 #ifndef NFS_MAXATTRTIMO
58 #define NFS_MAXATTRTIMO 60
59 #endif
60 #define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */
61 #define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */
62 #define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */
63
64 /*
65 * These can be overridden through <machine/param.h>, included via
66 * <sys/param.h>. This means that <sys/param.h> should always be
67 * included before this file.
68 */
69 #ifndef NFS_WSIZE
70 #define NFS_WSIZE 8192 /* Def. write data size */
71 #endif
72 #ifndef NFS_RSIZE
73 #define NFS_RSIZE 8192 /* Def. read data size */
74 #endif
75 #ifndef NFS_READDIRSIZE
76 #define NFS_READDIRSIZE 8192 /* Def. readdir size */
77 #endif
78
79 /*
80 * NFS client IO daemon threads. May be overridden by config options.
81 */
82 #ifndef NFS_MAXASYNCDAEMON
83 #define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runable */
84 #endif
85
86 /*
87 * NFS client read-ahead. May be overridden by config options.
88 * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation
89 * requires one IO thread.
90 */
91 #ifndef NFS_MAXRAHEAD
92 #define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */
93 #endif
94 #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */
95
96 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */
97
98 #ifdef _KERNEL
99 extern int nfs_niothreads; /* Number of async_daemons desired */
100 #ifndef NFS_DEFAULT_NIOTHREADS
101 #define NFS_DEFAULT_NIOTHREADS 4
102 #endif
103 #endif
104 #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */
105 #ifndef NFS_GATHERDELAY
106 #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */
107 #endif
108
109 /*
110 * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for
111 * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount
112 * of data in those buffers, and thus the minimum amount of data
113 * that you can request. NFS_DIRFRAGSIZ should be no smaller than
114 * DIRBLKSIZ.
115 */
116
117 #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */
118 #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */
119
120 /*
121 * Maximum number of directory entries cached per NFS node, to avoid
122 * having this grow without bounds on very large directories. The
123 * minimum size to get reasonable performance for emulated binaries
124 * is the maximum number of entries that fits in NFS_DIRBLKSIZ.
125 * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36.
126 */
127 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14)
128
129 /*
130 * Oddballs
131 */
132 #define NFS_CMPFH(n, f, s) \
133 ((n)->n_fhsize == (s) && !memcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s)))
134 #ifdef NFS_V2_ONLY
135 #define NFS_ISV3(v) (0)
136 #else
137 #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
138 #endif
139 #define NFS_SRVMAXDATA(n) \
140 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \
141 NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA)
142
143 /*
144 * Use the vm_page flag reserved for pager use to indicate pages
145 * which have been written to the server but not yet committed.
146 */
147 #define PG_NEEDCOMMIT PG_PAGER1
148
149 /*
150 * The IO_METASYNC flag should be implemented for local file systems.
151 * (Until then, it is nothin at all.)
152 */
153 #ifndef IO_METASYNC
154 #define IO_METASYNC 0
155 #endif
156
157 /*
158 * Set the attribute timeout based on how recently the file has been modified.
159 */
160 #define NFS_ATTRTIMEO(nmp, np) \
161 ((nmp->nm_flag & NFSMNT_NOAC) ? 0 : \
162 ((((np)->n_flag & NMODIFIED) || \
163 (time_second - (np)->n_mtime.tv_sec) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \
164 ((time_second - (np)->n_mtime.tv_sec) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \
165 (time_second - (np)->n_mtime.tv_sec) / 10)))
166
167 /*
168 * Export arguments for local filesystem mount calls.
169 * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see
170 * 'struct mountd_exports_list' below).
171 * When modifying this structure, take care to also edit the
172 * nfs_update_exports_30 function in nfs_export.c accordingly to convert
173 * export_args to export_args30.
174 */
175 struct export_args {
176 int ex_flags; /* export related flags */
177 uid_t ex_root; /* mapping for root uid */
178 struct uucred ex_anon; /* mapping for anonymous user */
179 struct sockaddr *ex_addr; /* net address to which exported */
180 int ex_addrlen; /* and the net address length */
181 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
182 int ex_masklen; /* and the smask length */
183 char *ex_indexfile; /* index file for WebNFS URLs */
184 };
185
186 /*
187 * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and
188 * mount_nfs should ever try and use it.
189 */
190 struct nfsd_args {
191 int sock; /* Socket to serve */
192 caddr_t name; /* Client addr for connection based sockets */
193 int namelen; /* Length of name */
194 };
195
196 struct nfsd_srvargs {
197 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */
198 uid_t nsd_uid; /* Effective uid mapped to cred */
199 u_int32_t nsd_haddr; /* Ip address of client */
200 struct uucred nsd_cr; /* Cred. uid maps to */
201 int nsd_authlen; /* Length of auth string (ret) */
202 u_char *nsd_authstr; /* Auth string (ret) */
203 int nsd_verflen; /* and the verfier */
204 u_char *nsd_verfstr;
205 struct timeval nsd_timestamp; /* timestamp from verifier */
206 u_int32_t nsd_ttl; /* credential ttl (sec) */
207 NFSKERBKEY_T nsd_key; /* Session key */
208 };
209
210 struct nfsd_cargs {
211 char *ncd_dirp; /* Mount dir path */
212 uid_t ncd_authuid; /* Effective uid */
213 int ncd_authtype; /* Type of authenticator */
214 u_int ncd_authlen; /* Length of authenticator string */
215 u_char *ncd_authstr; /* Authenticator string */
216 u_int ncd_verflen; /* and the verifier */
217 u_char *ncd_verfstr;
218 NFSKERBKEY_T ncd_key; /* Session key */
219 };
220
221 struct mountd_exports_list {
222 const char *mel_path;
223 size_t mel_nexports;
224 struct export_args *mel_exports;
225 };
226
227 /*
228 * Stats structure
229 */
230 struct nfsstats {
231 int attrcache_hits;
232 int attrcache_misses;
233 int lookupcache_hits;
234 int lookupcache_misses;
235 int direofcache_hits;
236 int direofcache_misses;
237 int biocache_reads;
238 int read_bios;
239 int read_physios;
240 int biocache_writes;
241 int write_bios;
242 int write_physios;
243 int biocache_readlinks;
244 int readlink_bios;
245 int biocache_readdirs;
246 int readdir_bios;
247 int rpccnt[NFS_NPROCS];
248 int rpcretries;
249 int srvrpccnt[NFS_NPROCS];
250 int srvrpc_errs;
251 int srv_errs;
252 int rpcrequests;
253 int rpctimeouts;
254 int rpcunexpected;
255 int rpcinvalid;
256 int srvcache_inproghits;
257 int srvcache_idemdonehits;
258 int srvcache_nonidemdonehits;
259 int srvcache_misses;
260 int srvnqnfs_leases;
261 int srvnqnfs_maxleases;
262 int srvnqnfs_getleases;
263 int srvvop_writes;
264 };
265
266 /*
267 * Flags for nfssvc() system call.
268 */
269 #define NFSSVC_BIOD 0x002
270 #define NFSSVC_NFSD 0x004
271 #define NFSSVC_ADDSOCK 0x008
272 #define NFSSVC_AUTHIN 0x010
273 #define NFSSVC_GOTAUTH 0x040
274 #define NFSSVC_AUTHINFAIL 0x080
275 #define NFSSVC_MNTD 0x100
276 #define NFSSVC_SETEXPORTSLIST 0x200
277
278 /*
279 * fs.nfs sysctl(3) identifiers
280 */
281 #define NFS_NFSSTATS 1 /* struct: struct nfsstats */
282 #define NFS_IOTHREADS 2 /* number of io threads */
283 #define NFS_MAXID 3
284
285 #define NFS_NAMES { \
286 { 0, 0 }, \
287 { "nfsstats", CTLTYPE_STRUCT }, \
288 { "iothreads", CTLTYPE_INT }, \
289 }
290
291 /*
292 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
293 * What should be in this set is open to debate, but I believe that since
294 * I/O system calls on ufs are never interrupted by signals the set should
295 * be minimal. My reasoning is that many current programs that use signals
296 * such as SIGALRM will not expect file I/O system calls to be interrupted
297 * by them and break.
298 */
299 #ifdef _KERNEL
300
301 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */
302
303 /*
304 * Socket errors ignored for connectionless sockets??
305 * For now, ignore them all
306 */
307 #define NFSIGNORE_SOERROR(s, e) \
308 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
309 ((s) & PR_CONNREQUIRED) == 0)
310
311 /*
312 * Nfs outstanding request list element
313 */
314 struct nfsreq {
315 TAILQ_ENTRY(nfsreq) r_chain;
316 struct mbuf *r_mreq;
317 struct mbuf *r_mrep;
318 struct mbuf *r_md;
319 caddr_t r_dpos;
320 struct nfsmount *r_nmp;
321 u_int32_t r_xid;
322 int r_flags; /* flags on request, see below */
323 int r_retry; /* max retransmission count */
324 int r_rexmit; /* current retrans count */
325 int r_timer; /* tick counter on reply */
326 u_int32_t r_procnum; /* NFS procedure number */
327 int r_rtt; /* RTT for rpc */
328 struct lwp *r_lwp; /* LWP that did I/O system call */
329 };
330
331 /*
332 * Queue head for nfsreq's
333 */
334 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq;
335
336 /* Flag values for r_flags */
337 #define R_TIMING 0x01 /* timing request (in mntp) */
338 #define R_SENT 0x02 /* request has been sent */
339 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */
340 #define R_INTR 0x08 /* intr mnt, signal pending */
341 #define R_SOCKERR 0x10 /* Fatal error on socket */
342 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */
343 #define R_MUSTRESEND 0x40 /* Must resend request */
344 #define R_GETONEREP 0x80 /* Probe for one reply only */
345 #define R_REXMITTED 0x100 /* retransmitted after reconnect */
346
347 /*
348 * A list of nfssvc_sock structures is maintained with all the sockets
349 * that require service by the nfsd.
350 * The nfsuid structs hang off of the nfssvc_sock structs in both lru
351 * and uid hash lists.
352 */
353 #ifndef NFS_UIDHASHSIZ
354 #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */
355 #endif
356 #define NUIDHASH(sock, uid) \
357 (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ])
358 #ifndef NFS_WDELAYHASHSIZ
359 #define NFS_WDELAYHASHSIZ 16 /* and with this */
360 #endif
361 #ifndef NFS_MUIDHASHSIZ
362 #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */
363 #endif
364 #define NMUIDHASH(nmp, uid) \
365 (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ])
366 #define NFSNOHASH(fhsum) ((fhsum) & nfsnodehash)
367
368 #ifndef NFS_DIRHASHSIZ
369 #define NFS_DIRHASHSIZ 64
370 #endif
371 #define NFSDIRHASH(np, off) \
372 (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)])
373
374 /*
375 * Macros for storing/retrieving cookies into directory buffers.
376 */
377 #define NFS_STASHCOOKIE(dp,off) \
378 *((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))) = off
379 #define NFS_GETCOOKIE(dp) \
380 (*((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))))
381 #define NFS_STASHCOOKIE32(dp, val) \
382 *((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \
383 sizeof (int))) = val
384 #define NFS_GETCOOKIE32(dp) \
385 (*((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \
386 sizeof (int))))
387
388 /*
389 * Flags passed to nfs_bioread().
390 */
391 #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */
392
393 /*
394 * Network address hash list element
395 */
396 union nethostaddr {
397 u_int32_t had_inetaddr;
398 struct mbuf *had_nam;
399 };
400
401 struct nfsuid {
402 TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */
403 LIST_ENTRY(nfsuid) nu_hash; /* Hash list */
404 int nu_flag; /* Flags */
405 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */
406 kauth_cred_t nu_cr; /* Cred uid mapped to */
407 int nu_expire; /* Expiry time (sec) */
408 struct timeval nu_timestamp; /* Kerb. timestamp */
409 u_int32_t nu_nickname; /* Nickname on server */
410 NFSKERBKEY_T nu_key; /* and session key */
411 };
412
413 #define nu_inetaddr nu_haddr.had_inetaddr
414 #define nu_nam nu_haddr.had_nam
415 /* Bits for nu_flag */
416 #define NU_INETADDR 0x1
417 #define NU_NAM 0x2
418 #ifdef INET6
419 #define NU_NETFAM(u) \
420 (((u)->nu_flag & NU_INETADDR) ? \
421 (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO)
422 #else
423 #define NU_NETFAM(u) (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO)
424 #endif
425
426 struct nfssvc_sock {
427 struct simplelock ns_lock;
428 TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */
429 TAILQ_ENTRY(nfssvc_sock) ns_pending; /* List of pending sockets */
430 TAILQ_HEAD(, nfsuid) ns_uidlruhead;
431 struct file *ns_fp;
432 struct socket *ns_so;
433 struct mbuf *ns_nam;
434 struct mbuf *ns_raw;
435 struct mbuf *ns_rawend;
436 struct mbuf *ns_rec;
437 struct mbuf *ns_recend;
438 struct mbuf *ns_frag;
439 int ns_flag;
440 int ns_solock;
441 int ns_cc;
442 int ns_reclen;
443 int ns_numuids;
444 u_int32_t ns_sref;
445 SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* send reply list */
446 LIST_HEAD(, nfsrv_descript) ns_tq; /* Write gather lists */
447 LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ];
448 LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ];
449 };
450
451 /* Bits for "ns_flag" */
452 #define SLP_VALID 0x01
453 #define SLP_DOREC 0x02 /* on nfssvc_sockpending queue */
454 #define SLP_NEEDQ 0x04
455 #define SLP_DISCONN 0x08
456 #define SLP_BUSY 0x10
457 #define SLP_WANT 0x20
458 #define SLP_LASTFRAG 0x40
459 #define SLP_SENDING 0x80
460
461 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead;
462 extern struct nfssvc_sockhead nfssvc_sockpending;
463 extern int nfssvc_sockhead_flag;
464 #define SLP_INIT 0x01
465 #define SLP_WANTINIT 0x02
466
467 /*
468 * One of these structures is allocated for each nfsd.
469 */
470 struct nfsd {
471 TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */
472 SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */
473 int nfsd_flag; /* NFSD_ flags */
474 struct nfssvc_sock *nfsd_slp; /* Current socket */
475 int nfsd_authlen; /* Authenticator len */
476 u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */
477 int nfsd_verflen; /* and the Verifier */
478 u_char nfsd_verfstr[RPCVERF_MAXSIZ];
479 struct proc *nfsd_procp; /* Proc ptr */
480 struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */
481 };
482
483 /* Bits for "nfsd_flag" */
484 #define NFSD_NEEDAUTH 0x04
485 #define NFSD_AUTHFAIL 0x08
486
487 #define NFSD_MAXFHSIZE 64
488 typedef struct nfsrvfh {
489 size_t nsfh_size;
490 union {
491 fhandle_t u_fh;
492 uint8_t u_opaque[NFSD_MAXFHSIZE];
493 } nsfh_u;
494 } nfsrvfh_t;
495 #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size)
496 #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque)
497 #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh)
498
499 /*
500 * This structure is used by the server for describing each request.
501 * Some fields are used only when write request gathering is performed.
502 */
503 struct nfsrv_descript {
504 u_quad_t nd_time; /* Write deadline (usec) */
505 off_t nd_off; /* Start byte offset */
506 off_t nd_eoff; /* and end byte offset */
507 LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */
508 LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */
509 LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */
510 SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */
511 struct mbuf *nd_mrep; /* Request mbuf list */
512 struct mbuf *nd_md; /* Current dissect mbuf */
513 struct mbuf *nd_mreq; /* Reply mbuf list */
514 struct mbuf *nd_nam; /* and socket addr */
515 struct mbuf *nd_nam2; /* return socket addr */
516 caddr_t nd_dpos; /* Current dissect pos */
517 u_int32_t nd_procnum; /* RPC # */
518 int nd_stable; /* storage type */
519 int nd_flag; /* nd_flag */
520 int nd_len; /* Length of this write */
521 int nd_repstat; /* Reply status */
522 u_int32_t nd_retxid; /* Reply xid */
523 u_int32_t nd_duration; /* Lease duration */
524 struct timeval nd_starttime; /* Time RPC initiated */
525 nfsrvfh_t nd_fh; /* File handle */
526 kauth_cred_t nd_cr; /* Credentials */
527 };
528
529 /* Bits for "nd_flag" */
530 #define ND_READ LEASE_READ
531 #define ND_WRITE LEASE_WRITE
532 #define ND_CHECK 0x04
533 #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK)
534 #define ND_NFSV3 0x08
535 #define ND_NQNFS 0x10
536 #define ND_KERBNICK 0x20
537 #define ND_KERBFULL 0x40
538 #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL)
539
540 extern struct simplelock nfsd_slock;
541 extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head;
542 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head;
543 extern int nfsd_head_flag;
544 #define NFSD_CHECKSLP 0x01
545
546 extern struct mowner nfs_mowner;
547 extern struct nfsstats nfsstats;
548 extern int nfs_numasync;
549
550 /*
551 * These macros compare nfsrv_descript structures.
552 */
553 #define NFSW_CONTIG(o, n) \
554 ((o)->nd_eoff >= (n)->nd_off && \
555 !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH))
556
557 /*
558 * Defines for WebNFS
559 */
560
561 #define WEBNFS_ESC_CHAR '%'
562 #define WEBNFS_SPECCHAR_START 0x80
563
564 #define WEBNFS_NATIVE_CHAR 0x80
565 /*
566 * ..
567 * Possibly more here in the future.
568 */
569
570 /*
571 * Macro for converting escape characters in WebNFS pathnames.
572 * Should really be in libkern.
573 */
574
575 #define HEXTOC(c) \
576 ((c) >= 'a' ? ((c) - ('a' - 10)) : \
577 ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '')))
578 #define HEXSTRTOI(p) \
579 ((HEXTOC(p[0]) << 4) + HEXTOC(p[1]))
580
581 /*
582 * Structure holding information for a publicly exported filesystem
583 * (WebNFS). Currently the specs allow just for one such filesystem.
584 */
585 struct nfs_public {
586 int np_valid; /* Do we hold valid information */
587 fhandle_t *np_handle; /* Filehandle for pub fs (internal) */
588 struct mount *np_mount; /* Mountpoint of exported fs */
589 char *np_index; /* Index file */
590 };
591 #endif /* _KERNEL */
592
593 #endif /* _NFS_NFS_H */
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