1 | /* $NetBSD: nfs.h,v 1.75 2015/04/20 13:12:24 riastradh 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 | #endif |
45 | |
46 | /* |
47 | * Tunable constants for nfs |
48 | */ |
49 | |
50 | #define NFS_MAXIOVEC 34 |
51 | #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ |
52 | #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ |
53 | #define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */ |
54 | #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ |
55 | #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ |
56 | #define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/ |
57 | #define NFS_MAXREXMIT 100 /* Stop counting after this many */ |
58 | #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ |
59 | #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ |
60 | #define NFS_MAXGRPS 16 /* Max. size of groups list */ |
61 | #ifndef NFS_MINATTRTIMO |
62 | #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ |
63 | #endif |
64 | #ifndef NFS_MAXATTRTIMO |
65 | #define NFS_MAXATTRTIMO 60 |
66 | #endif |
67 | #define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */ |
68 | #define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */ |
69 | #define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */ |
70 | |
71 | #define NFS_CWNDSCALE 256 |
72 | #define NFS_MAXCWND (NFS_CWNDSCALE * 32) |
73 | |
74 | /* |
75 | * These can be overridden through <machine/param.h>, included via |
76 | * <sys/param.h>. This means that <sys/param.h> should always be |
77 | * included before this file. |
78 | */ |
79 | #ifndef NFS_WSIZE |
80 | #define NFS_WSIZE 8192 /* Def. write data size */ |
81 | #endif |
82 | #ifndef NFS_RSIZE |
83 | #define NFS_RSIZE 8192 /* Def. read data size */ |
84 | #endif |
85 | #ifndef NFS_READDIRSIZE |
86 | #define NFS_READDIRSIZE 8192 /* Def. readdir size */ |
87 | #endif |
88 | |
89 | /* |
90 | * NFS client IO daemon threads. May be overridden by config options. |
91 | */ |
92 | #ifndef NFS_MAXASYNCDAEMON |
93 | #define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runable */ |
94 | #endif |
95 | |
96 | /* |
97 | * NFS client read-ahead. May be overridden by config options. |
98 | * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation |
99 | * requires one IO thread. |
100 | */ |
101 | #ifndef NFS_MAXRAHEAD |
102 | #define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */ |
103 | #endif |
104 | #define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */ |
105 | |
106 | #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ |
107 | |
108 | #define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */ |
109 | #define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */ |
110 | |
111 | #ifdef _KERNEL |
112 | extern int nfs_niothreads; /* Number of async_daemons desired */ |
113 | #ifndef NFS_DEFAULT_NIOTHREADS |
114 | #define NFS_DEFAULT_NIOTHREADS 4 |
115 | #endif |
116 | #endif |
117 | #define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */ |
118 | #ifndef NFS_GATHERDELAY |
119 | #define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */ |
120 | #endif |
121 | |
122 | /* |
123 | * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for |
124 | * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount |
125 | * of data in those buffers, and thus the minimum amount of data |
126 | * that you can request. NFS_DIRFRAGSIZ should be no smaller than |
127 | * DIRBLKSIZ. |
128 | */ |
129 | |
130 | #define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */ |
131 | #define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */ |
132 | |
133 | /* |
134 | * Maximum number of directory entries cached per NFS node, to avoid |
135 | * having this grow without bounds on very large directories. The |
136 | * minimum size to get reasonable performance for emulated binaries |
137 | * is the maximum number of entries that fits in NFS_DIRBLKSIZ. |
138 | * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36. |
139 | */ |
140 | #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14) |
141 | |
142 | /* |
143 | * Oddballs |
144 | */ |
145 | #define NFS_CMPFH(n, f, s) \ |
146 | ((n)->n_fhsize == (s) && !memcmp((void *)(n)->n_fhp, (void *)(f), (s))) |
147 | #ifdef NFS_V2_ONLY |
148 | #define NFS_ISV3(v) (0) |
149 | #else |
150 | #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) |
151 | #endif |
152 | #define NFS_SRVMAXDATA(n) \ |
153 | (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ |
154 | NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) |
155 | |
156 | /* |
157 | * Use the vm_page flag reserved for pager use to indicate pages |
158 | * which have been written to the server but not yet committed. |
159 | */ |
160 | #define PG_NEEDCOMMIT PG_PAGER1 |
161 | |
162 | /* |
163 | * The IO_METASYNC flag should be implemented for local file systems. |
164 | * (Until then, it is nothin at all.) |
165 | */ |
166 | #ifndef IO_METASYNC |
167 | #define IO_METASYNC 0 |
168 | #endif |
169 | |
170 | /* |
171 | * Export arguments for local filesystem mount calls. |
172 | * Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see |
173 | * 'struct mountd_exports_list' below). |
174 | * When modifying this structure, take care to also edit the |
175 | * nfs_update_exports_30 function in nfs_export.c accordingly to convert |
176 | * export_args to export_args30. |
177 | */ |
178 | struct export_args { |
179 | int ex_flags; /* export related flags */ |
180 | uid_t ex_root; /* mapping for root uid */ |
181 | struct uucred ex_anon; /* mapping for anonymous user */ |
182 | struct sockaddr *ex_addr; /* net address to which exported */ |
183 | int ex_addrlen; /* and the net address length */ |
184 | struct sockaddr *ex_mask; /* mask of valid bits in saddr */ |
185 | int ex_masklen; /* and the smask length */ |
186 | char *ex_indexfile; /* index file for WebNFS URLs */ |
187 | }; |
188 | |
189 | /* |
190 | * Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and |
191 | * mount_nfs should ever try and use it. |
192 | */ |
193 | struct nfsd_args { |
194 | int sock; /* Socket to serve */ |
195 | void * name; /* Client addr for connection based sockets */ |
196 | int namelen; /* Length of name */ |
197 | }; |
198 | |
199 | struct nfsd_srvargs { |
200 | struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ |
201 | uid_t nsd_uid; /* Effective uid mapped to cred */ |
202 | u_int32_t nsd_haddr; /* Ip address of client */ |
203 | struct uucred nsd_cr; /* Cred. uid maps to */ |
204 | int nsd_authlen; /* Length of auth string (ret) */ |
205 | u_char *nsd_authstr; /* Auth string (ret) */ |
206 | int nsd_verflen; /* and the verfier */ |
207 | u_char *nsd_verfstr; |
208 | struct timeval nsd_timestamp; /* timestamp from verifier */ |
209 | u_int32_t nsd_ttl; /* credential ttl (sec) */ |
210 | NFSKERBKEY_T nsd_key; /* Session key */ |
211 | }; |
212 | |
213 | struct nfsd_cargs { |
214 | char *ncd_dirp; /* Mount dir path */ |
215 | uid_t ncd_authuid; /* Effective uid */ |
216 | int ncd_authtype; /* Type of authenticator */ |
217 | u_int ncd_authlen; /* Length of authenticator string */ |
218 | u_char *ncd_authstr; /* Authenticator string */ |
219 | u_int ncd_verflen; /* and the verifier */ |
220 | u_char *ncd_verfstr; |
221 | NFSKERBKEY_T ncd_key; /* Session key */ |
222 | }; |
223 | |
224 | struct mountd_exports_list { |
225 | const char *mel_path; |
226 | size_t mel_nexports; |
227 | struct export_args *mel_exports; |
228 | }; |
229 | |
230 | /* |
231 | * try to keep nfsstats, which is exposed to userland via sysctl, |
232 | * compatible after NQNFS removal. |
233 | * 26 is the old value of NFS_NPROCS, which includes NQNFS procedures. |
234 | */ |
235 | #define NFSSTATS_NPROCS 26 |
236 | |
237 | /* |
238 | * Stats structure |
239 | */ |
240 | struct nfsstats { |
241 | uint32_t attrcache_hits; |
242 | uint32_t attrcache_misses; |
243 | uint32_t lookupcache_hits; |
244 | uint32_t lookupcache_misses; |
245 | uint32_t direofcache_hits; |
246 | uint32_t direofcache_misses; |
247 | uint32_t biocache_reads; |
248 | uint32_t read_bios; |
249 | uint32_t read_physios; |
250 | uint32_t biocache_writes; |
251 | uint32_t write_bios; |
252 | uint32_t write_physios; |
253 | uint32_t biocache_readlinks; |
254 | uint32_t readlink_bios; |
255 | uint32_t biocache_readdirs; |
256 | uint32_t readdir_bios; |
257 | uint32_t rpccnt[NFSSTATS_NPROCS]; |
258 | uint32_t rpcretries; |
259 | uint32_t srvrpccnt[NFSSTATS_NPROCS]; |
260 | uint32_t srvrpc_errs; |
261 | uint32_t srv_errs; |
262 | uint32_t rpcrequests; |
263 | uint32_t rpctimeouts; |
264 | uint32_t rpcunexpected; |
265 | uint32_t rpcinvalid; |
266 | uint32_t srvcache_inproghits; |
267 | uint32_t srvcache_idemdonehits; |
268 | uint32_t srvcache_nonidemdonehits; |
269 | uint32_t srvcache_misses; |
270 | uint32_t __srvnqnfs_leases; /* unused */ |
271 | uint32_t __srvnqnfs_maxleases; /* unused */ |
272 | uint32_t __srvnqnfs_getleases; /* unused */ |
273 | uint32_t srvvop_writes; |
274 | }; |
275 | |
276 | /* |
277 | * Flags for nfssvc() system call. |
278 | */ |
279 | #define NFSSVC_BIOD 0x002 |
280 | #define NFSSVC_NFSD 0x004 |
281 | #define NFSSVC_ADDSOCK 0x008 |
282 | #define NFSSVC_AUTHIN 0x010 |
283 | #define NFSSVC_GOTAUTH 0x040 |
284 | #define NFSSVC_AUTHINFAIL 0x080 |
285 | #define NFSSVC_MNTD 0x100 |
286 | #define NFSSVC_SETEXPORTSLIST 0x200 |
287 | |
288 | /* |
289 | * fs.nfs sysctl(3) identifiers |
290 | */ |
291 | #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ |
292 | #define NFS_IOTHREADS 2 /* number of io threads */ |
293 | #define NFS_MAXID 3 |
294 | |
295 | #define NFS_NAMES { \ |
296 | { 0, 0 }, \ |
297 | { "nfsstats", CTLTYPE_STRUCT }, \ |
298 | { "iothreads", CTLTYPE_INT }, \ |
299 | } |
300 | |
301 | /* |
302 | * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. |
303 | * What should be in this set is open to debate, but I believe that since |
304 | * I/O system calls on ufs are never interrupted by signals the set should |
305 | * be minimal. My reasoning is that many current programs that use signals |
306 | * such as SIGALRM will not expect file I/O system calls to be interrupted |
307 | * by them and break. |
308 | */ |
309 | #ifdef _KERNEL |
310 | |
311 | struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ |
312 | |
313 | /* |
314 | * Socket errors ignored for connectionless sockets?? |
315 | * For now, ignore them all |
316 | */ |
317 | #define NFSIGNORE_SOERROR(s, e) \ |
318 | ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ |
319 | ((s) & PR_CONNREQUIRED) == 0) |
320 | |
321 | /* |
322 | * Nfs outstanding request list element |
323 | */ |
324 | struct nfsreq { |
325 | TAILQ_ENTRY(nfsreq) r_chain; |
326 | struct mbuf *r_mreq; |
327 | struct mbuf *r_mrep; |
328 | struct mbuf *r_md; |
329 | void * r_dpos; |
330 | struct nfsmount *r_nmp; |
331 | u_int32_t r_xid; |
332 | int r_flags; /* flags on request, see below */ |
333 | int r_retry; /* max retransmission count */ |
334 | int r_rexmit; /* current retrans count */ |
335 | u_int32_t r_procnum; /* NFS procedure number */ |
336 | int r_rtt; /* RTT for rpc */ |
337 | struct lwp *r_lwp; /* LWP that did I/O system call */ |
338 | }; |
339 | |
340 | /* |
341 | * Queue head for nfsreq's |
342 | */ |
343 | extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq; |
344 | |
345 | /* Flag values for r_flags */ |
346 | #define R_TIMING 0x01 /* timing request (in mntp) */ |
347 | #define R_SENT 0x02 /* request has been sent */ |
348 | #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ |
349 | #define R_INTR 0x08 /* intr mnt, signal pending */ |
350 | #define R_SOCKERR 0x10 /* Fatal error on socket */ |
351 | #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ |
352 | #define R_MUSTRESEND 0x40 /* Must resend request */ |
353 | #define R_REXMITTED 0x100 /* retransmitted after reconnect */ |
354 | |
355 | /* |
356 | * A list of nfssvc_sock structures is maintained with all the sockets |
357 | * that require service by the nfsd. |
358 | * The nfsuid structs hang off of the nfssvc_sock structs in both lru |
359 | * and uid hash lists. |
360 | */ |
361 | #ifndef NFS_UIDHASHSIZ |
362 | #define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */ |
363 | #endif |
364 | #define NUIDHASH(sock, uid) \ |
365 | (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ]) |
366 | #ifndef NFS_WDELAYHASHSIZ |
367 | #define NFS_WDELAYHASHSIZ 16 /* and with this */ |
368 | #endif |
369 | #ifndef NFS_MUIDHASHSIZ |
370 | #define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */ |
371 | #endif |
372 | #define NMUIDHASH(nmp, uid) \ |
373 | (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ]) |
374 | |
375 | #ifndef NFS_DIRHASHSIZ |
376 | #define NFS_DIRHASHSIZ 64 |
377 | #endif |
378 | #define NFSDIRHASH(np, off) \ |
379 | (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)]) |
380 | |
381 | /* |
382 | * Macros for storing/retrieving cookies into directory buffers. |
383 | */ |
384 | #define NFS_STASHCOOKIE(dp,off) \ |
385 | *((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))) = off |
386 | #define NFS_GETCOOKIE(dp) \ |
387 | (*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t)))) |
388 | #define NFS_STASHCOOKIE32(dp, val) \ |
389 | *((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ |
390 | sizeof (int))) = val |
391 | #define NFS_GETCOOKIE32(dp) \ |
392 | (*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \ |
393 | sizeof (int)))) |
394 | |
395 | /* |
396 | * Flags passed to nfs_bioread(). |
397 | */ |
398 | #define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */ |
399 | |
400 | /* |
401 | * Network address hash list element |
402 | */ |
403 | union nethostaddr { |
404 | u_int32_t had_inetaddr; |
405 | struct mbuf *had_nam; |
406 | }; |
407 | |
408 | struct nfsuid { |
409 | TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ |
410 | LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ |
411 | int nu_flag; /* Flags */ |
412 | union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ |
413 | kauth_cred_t nu_cr; /* Cred uid mapped to */ |
414 | int nu_expire; /* Expiry time (sec) */ |
415 | struct timeval nu_timestamp; /* Kerb. timestamp */ |
416 | u_int32_t nu_nickname; /* Nickname on server */ |
417 | NFSKERBKEY_T nu_key; /* and session key */ |
418 | }; |
419 | |
420 | #define nu_inetaddr nu_haddr.had_inetaddr |
421 | #define nu_nam nu_haddr.had_nam |
422 | /* Bits for nu_flag */ |
423 | #define NU_INETADDR 0x1 |
424 | #define NU_NAM 0x2 |
425 | #define NU_NETFAM(u) \ |
426 | (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_INET6) |
427 | |
428 | /* |
429 | * b: protected by SLP_BUSY |
430 | * g: protected by nfsd_lock |
431 | * s: protected by ns_lock |
432 | * a: protected by ns_alock |
433 | */ |
434 | |
435 | struct nfssvc_sock { |
436 | kmutex_t ns_lock; |
437 | kmutex_t ns_alock; |
438 | kcondvar_t ns_cv; /* s: */ |
439 | TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */ |
440 | TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */ |
441 | TAILQ_HEAD(, nfsuid) ns_uidlruhead; |
442 | struct file *ns_fp; |
443 | struct socket *ns_so; |
444 | struct mbuf *ns_nam; |
445 | struct mbuf *ns_raw; /* b: */ |
446 | struct mbuf *ns_rawend; /* b: */ |
447 | struct mbuf *ns_rec; /* b: */ |
448 | struct mbuf *ns_recend; /* b: */ |
449 | struct mbuf *ns_frag; /* b: */ |
450 | int ns_flags; /* s: */ |
451 | int ns_aflags; /* a: */ |
452 | int ns_gflags; /* g: */ |
453 | int ns_sflags; /* b: */ |
454 | int ns_cc; /* b: */ |
455 | int ns_reclen; /* 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 | |
479 | extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead; |
480 | extern struct nfssvc_sockhead nfssvc_sockpending; |
481 | extern int nfssvc_sockhead_flag; |
482 | #define SLP_INIT 0x01 |
483 | |
484 | /* |
485 | * One of these structures is allocated for each nfsd. |
486 | */ |
487 | struct nfsd { |
488 | TAILQ_ENTRY(nfsd) nfsd_chain; /* List 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 | }; |
500 | |
501 | /* Bits for "nfsd_flag" */ |
502 | #define NFSD_NEEDAUTH 0x04 |
503 | #define NFSD_AUTHFAIL 0x08 |
504 | |
505 | #define NFSD_MAXFHSIZE 64 |
506 | typedef struct nfsrvfh { |
507 | size_t nsfh_size; |
508 | union { |
509 | fhandle_t u_fh; |
510 | uint8_t u_opaque[NFSD_MAXFHSIZE]; |
511 | } nsfh_u; |
512 | } nfsrvfh_t; |
513 | #define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size) |
514 | #define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque) |
515 | #define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh) |
516 | |
517 | /* |
518 | * This structure is used by the server for describing each request. |
519 | * Some fields are used only when write request gathering is performed. |
520 | */ |
521 | struct nfsrv_descript { |
522 | u_quad_t nd_time; /* Write deadline (usec) */ |
523 | off_t nd_off; /* Start byte offset */ |
524 | off_t nd_eoff; /* and end byte offset */ |
525 | LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */ |
526 | LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */ |
527 | LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */ |
528 | SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */ |
529 | struct mbuf *nd_mrep; /* Request mbuf list */ |
530 | struct mbuf *nd_md; /* Current dissect mbuf */ |
531 | struct mbuf *nd_mreq; /* Reply mbuf list */ |
532 | struct mbuf *nd_nam; /* and socket addr */ |
533 | struct mbuf *nd_nam2; /* return socket addr */ |
534 | void * nd_dpos; /* Current dissect pos */ |
535 | u_int32_t nd_procnum; /* RPC # */ |
536 | int nd_stable; /* storage type */ |
537 | int nd_flag; /* nd_flag */ |
538 | int nd_len; /* Length of this write */ |
539 | int nd_repstat; /* Reply status */ |
540 | u_int32_t nd_retxid; /* Reply xid */ |
541 | u_int32_t nd_duration; /* Lease duration */ |
542 | struct timeval nd_starttime; /* Time RPC initiated */ |
543 | nfsrvfh_t nd_fh; /* File handle */ |
544 | kauth_cred_t nd_cr; /* Credentials */ |
545 | }; |
546 | |
547 | /* Bits for "nd_flag" */ |
548 | #define ND_READ 0x01 /* Check lease for readers */ |
549 | #define ND_WRITE 0x02 /* Check lease for modifiers */ |
550 | #define ND_CHECK 0x04 |
551 | #define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK) |
552 | #define ND_NFSV3 0x08 |
553 | #define ND_KERBNICK 0x20 |
554 | #define ND_KERBFULL 0x40 |
555 | #define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL) |
556 | |
557 | extern kmutex_t nfsd_lock; |
558 | extern kcondvar_t nfsd_initcv; |
559 | extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; |
560 | extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head; |
561 | extern int nfsd_head_flag; |
562 | #define NFSD_CHECKSLP 0x01 |
563 | |
564 | extern struct mowner nfs_mowner; |
565 | extern struct nfsstats nfsstats; |
566 | extern 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 | */ |
603 | struct 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 */ |
612 | |