1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Rick Macklem at The University of Guelph.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
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.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 */
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38
39 /*
40 * Functions that need to be different for different versions of BSD
41 * kernel should be kept here, along with any global storage specific
42 * to this BSD variant.
43 */
44 #include <fs/nfs/nfsport.h>
45 #include <sys/smp.h>
46 #include <sys/sysctl.h>
47 #include <sys/taskqueue.h>
48 #include <rpc/rpc_com.h>
49 #include <vm/vm.h>
50 #include <vm/vm_object.h>
51 #include <vm/vm_page.h>
52 #include <vm/vm_param.h>
53 #include <vm/vm_map.h>
54 #include <vm/vm_kern.h>
55 #include <vm/vm_extern.h>
56 #include <vm/uma.h>
57
58 extern int nfscl_ticks;
59 extern nfsuserd_state nfsrv_nfsuserd;
60 extern struct nfssockreq nfsrv_nfsuserdsock;
61 extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *,
62 struct thread *);
63 extern int nfsrv_useacl;
64 struct mount nfsv4root_mnt;
65 int newnfs_numnfsd = 0;
66 struct nfsstatsv1 nfsstatsv1;
67 int nfs_numnfscbd = 0;
68 int nfscl_debuglevel = 0;
69 char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
70 int nfsrv_lughashsize = 100;
71 struct mtx nfsrv_dslock_mtx;
72 struct nfsdevicehead nfsrv_devidhead;
73 volatile int nfsrv_devidcnt = 0;
74 void (*ncl_call_invalcaches)(struct vnode *) = NULL;
75 vop_advlock_t *nfs_advlock_p = NULL;
76 vop_reclaim_t *nfs_reclaim_p = NULL;
77 uint32_t nfs_srvmaxio = NFS_SRVMAXIO;
78
79 int nfs_pnfsio(task_fn_t *, void *);
80
81 static int nfs_realign_test;
82 static int nfs_realign_count;
83 static struct ext_nfsstats oldnfsstats;
84 static struct nfsstatsov1 nfsstatsov1;
85
86 SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
87 "NFS filesystem");
88 SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test,
89 0, "Number of realign tests done");
90 SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count,
91 0, "Number of mbuf realignments done");
92 SYSCTL_STRING(_vfs_nfs, OID_AUTO, callback_addr, CTLFLAG_RW,
93 nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr),
94 "NFSv4 callback addr for server to use");
95 SYSCTL_INT(_vfs_nfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nfscl_debuglevel,
96 0, "Debug level for NFS client");
97 SYSCTL_INT(_vfs_nfs, OID_AUTO, userhashsize, CTLFLAG_RDTUN, &nfsrv_lughashsize,
98 0, "Size of hash tables for uid/name mapping");
99 int nfs_pnfsiothreads = -1;
100 SYSCTL_INT(_vfs_nfs, OID_AUTO, pnfsiothreads, CTLFLAG_RW, &nfs_pnfsiothreads,
101 0, "Number of pNFS mirror I/O threads");
102
103 /*
104 * Defines for malloc
105 * (Here for FreeBSD, since they allocate storage.)
106 */
107 MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache");
108 MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id");
109 MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state",
110 "NFSD V4 State (Openowner, Open, Lockowner, Delegation");
111 MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock");
112 MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file");
113 MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string");
114 MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map");
115 MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header");
116 MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle");
117 MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner");
118 MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open");
119 MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation");
120 MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client");
121 MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner");
122 MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock");
123 MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "NFS vnode");
124 MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "NFS Direct IO buffer");
125 MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroff",
126 "NFS directory offset data");
127 MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback",
128 "NFS local lock rollback");
129 MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout");
130 MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout");
131 MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info");
132 MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req");
133 MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session");
134 MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall");
135 MALLOC_DEFINE(M_NEWNFSDSESSION, "NFSD session", "NFSD Session for a client");
136
137 /*
138 * Definition of mutex locks.
139 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list
140 * and assorted other nfsd structures.
141 */
142 struct mtx newnfsd_mtx;
143 struct mtx nfs_sockl_mutex;
144 struct mtx nfs_state_mutex;
145 struct mtx nfs_nameid_mutex;
146 struct mtx nfs_req_mutex;
147 struct mtx nfs_slock_mutex;
148 struct mtx nfs_clstate_mutex;
149
150 /* local functions */
151 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *);
152
153 #ifdef __NO_STRICT_ALIGNMENT
154 /*
155 * These architectures don't need re-alignment, so just return.
156 */
157 int
newnfs_realign(struct mbuf ** pm,int how)158 newnfs_realign(struct mbuf **pm, int how)
159 {
160
161 return (0);
162 }
163 #else /* !__NO_STRICT_ALIGNMENT */
164 /*
165 * newnfs_realign:
166 *
167 * Check for badly aligned mbuf data and realign by copying the unaligned
168 * portion of the data into a new mbuf chain and freeing the portions
169 * of the old chain that were replaced.
170 *
171 * We cannot simply realign the data within the existing mbuf chain
172 * because the underlying buffers may contain other rpc commands and
173 * we cannot afford to overwrite them.
174 *
175 * We would prefer to avoid this situation entirely. The situation does
176 * not occur with NFS/UDP and is supposed to only occasionally occur
177 * with TCP. Use vfs.nfs.realign_count and realign_test to check this.
178 *
179 */
180 int
newnfs_realign(struct mbuf ** pm,int how)181 newnfs_realign(struct mbuf **pm, int how)
182 {
183 struct mbuf *m, *n;
184 int off, space;
185
186 ++nfs_realign_test;
187 while ((m = *pm) != NULL) {
188 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) {
189 /*
190 * NB: we can't depend on m_pkthdr.len to help us
191 * decide what to do here. May not be worth doing
192 * the m_length calculation as m_copyback will
193 * expand the mbuf chain below as needed.
194 */
195 space = m_length(m, NULL);
196 if (space >= MINCLSIZE) {
197 /* NB: m_copyback handles space > MCLBYTES */
198 n = m_getcl(how, MT_DATA, 0);
199 } else
200 n = m_get(how, MT_DATA);
201 if (n == NULL)
202 return (ENOMEM);
203 /*
204 * Align the remainder of the mbuf chain.
205 */
206 n->m_len = 0;
207 off = 0;
208 while (m != NULL) {
209 m_copyback(n, off, m->m_len, mtod(m, caddr_t));
210 off += m->m_len;
211 m = m->m_next;
212 }
213 m_freem(*pm);
214 *pm = n;
215 ++nfs_realign_count;
216 break;
217 }
218 pm = &m->m_next;
219 }
220
221 return (0);
222 }
223 #endif /* __NO_STRICT_ALIGNMENT */
224
225 #ifdef notdef
226 static void
nfsrv_object_create(struct vnode * vp,struct thread * td)227 nfsrv_object_create(struct vnode *vp, struct thread *td)
228 {
229
230 if (vp == NULL || vp->v_type != VREG)
231 return;
232 (void) vfs_object_create(vp, td, td->td_ucred);
233 }
234 #endif
235
236 /*
237 * Look up a file name. Basically just initialize stuff and call namei().
238 */
239 int
nfsrv_lookupfilename(struct nameidata * ndp,char * fname,NFSPROC_T * p)240 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p)
241 {
242 int error;
243
244 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname,
245 p);
246 error = namei(ndp);
247 if (!error) {
248 NDFREE(ndp, NDF_ONLY_PNBUF);
249 }
250 return (error);
251 }
252
253 /*
254 * Copy NFS uid, gids to the cred structure.
255 */
256 void
newnfs_copycred(struct nfscred * nfscr,struct ucred * cr)257 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr)
258 {
259
260 KASSERT(nfscr->nfsc_ngroups >= 0,
261 ("newnfs_copycred: negative nfsc_ngroups"));
262 cr->cr_uid = nfscr->nfsc_uid;
263 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups);
264 }
265
266 /*
267 * Map args from nfsmsleep() to msleep().
268 */
269 int
nfsmsleep(void * chan,void * mutex,int prio,const char * wmesg,struct timespec * ts)270 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg,
271 struct timespec *ts)
272 {
273 u_int64_t nsecval;
274 int error, timeo;
275
276 if (ts) {
277 timeo = hz * ts->tv_sec;
278 nsecval = (u_int64_t)ts->tv_nsec;
279 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) /
280 1000000000;
281 timeo += (int)nsecval;
282 } else {
283 timeo = 0;
284 }
285 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo);
286 return (error);
287 }
288
289 /*
290 * Get the file system info for the server. For now, just assume FFS.
291 */
292 void
nfsvno_getfs(struct nfsfsinfo * sip,int isdgram)293 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram)
294 {
295 int pref;
296
297 /*
298 * XXX
299 * There should be file system VFS OP(s) to get this information.
300 * For now, assume ufs.
301 */
302 if (isdgram)
303 pref = NFS_MAXDGRAMDATA;
304 else
305 pref = nfs_srvmaxio;
306 sip->fs_rtmax = nfs_srvmaxio;
307 sip->fs_rtpref = pref;
308 sip->fs_rtmult = NFS_FABLKSIZE;
309 sip->fs_wtmax = nfs_srvmaxio;
310 sip->fs_wtpref = pref;
311 sip->fs_wtmult = NFS_FABLKSIZE;
312 sip->fs_dtpref = pref;
313 sip->fs_maxfilesize = 0xffffffffffffffffull;
314 sip->fs_timedelta.tv_sec = 0;
315 sip->fs_timedelta.tv_nsec = 1;
316 sip->fs_properties = (NFSV3FSINFO_LINK |
317 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
318 NFSV3FSINFO_CANSETTIME);
319 }
320
321 /*
322 * Do the pathconf vnode op.
323 */
324 int
nfsvno_pathconf(struct vnode * vp,int flag,long * retf,struct ucred * cred,struct thread * p)325 nfsvno_pathconf(struct vnode *vp, int flag, long *retf,
326 struct ucred *cred, struct thread *p)
327 {
328 int error;
329
330 error = VOP_PATHCONF(vp, flag, retf);
331 if (error == EOPNOTSUPP || error == EINVAL) {
332 /*
333 * Some file systems return EINVAL for name arguments not
334 * supported and some return EOPNOTSUPP for this case.
335 * So the NFSv3 Pathconf RPC doesn't fail for these cases,
336 * just fake them.
337 */
338 switch (flag) {
339 case _PC_LINK_MAX:
340 *retf = NFS_LINK_MAX;
341 break;
342 case _PC_NAME_MAX:
343 *retf = NAME_MAX;
344 break;
345 case _PC_CHOWN_RESTRICTED:
346 *retf = 1;
347 break;
348 case _PC_NO_TRUNC:
349 *retf = 1;
350 break;
351 default:
352 /*
353 * Only happens if a _PC_xxx is added to the server,
354 * but this isn't updated.
355 */
356 *retf = 0;
357 printf("nfsrvd pathconf flag=%d not supp\n", flag);
358 }
359 error = 0;
360 }
361 NFSEXITCODE(error);
362 return (error);
363 }
364
365 /* Fake nfsrv_atroot. Just return 0 */
366 int
nfsrv_atroot(struct vnode * vp,uint64_t * retp)367 nfsrv_atroot(struct vnode *vp, uint64_t *retp)
368 {
369
370 return (0);
371 }
372
373 /*
374 * Set the credentials to refer to root.
375 * If only the various BSDen could agree on whether cr_gid is a separate
376 * field or cr_groups[0]...
377 */
378 void
newnfs_setroot(struct ucred * cred)379 newnfs_setroot(struct ucred *cred)
380 {
381
382 cred->cr_uid = 0;
383 cred->cr_groups[0] = 0;
384 cred->cr_ngroups = 1;
385 }
386
387 /*
388 * Get the client credential. Used for Renew and recovery.
389 */
390 struct ucred *
newnfs_getcred(void)391 newnfs_getcred(void)
392 {
393 struct ucred *cred;
394 struct thread *td = curthread;
395
396 cred = crdup(td->td_ucred);
397 newnfs_setroot(cred);
398 return (cred);
399 }
400
401 /*
402 * Sleep for a short period of time unless errval == NFSERR_GRACE, where
403 * the sleep should be for 5 seconds.
404 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on
405 * an event that never gets a wakeup. Only return EINTR or 0.
406 */
407 int
nfs_catnap(int prio,int errval,const char * wmesg)408 nfs_catnap(int prio, int errval, const char *wmesg)
409 {
410 static int non_event;
411 int ret;
412
413 if (errval == NFSERR_GRACE)
414 ret = tsleep(&non_event, prio, wmesg, 5 * hz);
415 else
416 ret = tsleep(&non_event, prio, wmesg, 1);
417 if (ret != EINTR)
418 ret = 0;
419 return (ret);
420 }
421
422 /*
423 * Get referral. For now, just fail.
424 */
425 struct nfsreferral *
nfsv4root_getreferral(struct vnode * vp,struct vnode * dvp,u_int32_t fileno)426 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno)
427 {
428
429 return (NULL);
430 }
431
432 static int
nfssvc_nfscommon(struct thread * td,struct nfssvc_args * uap)433 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap)
434 {
435 int error;
436
437 error = nfssvc_call(td, uap, td->td_ucred);
438 NFSEXITCODE(error);
439 return (error);
440 }
441
442 static int
nfssvc_call(struct thread * p,struct nfssvc_args * uap,struct ucred * cred)443 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
444 {
445 int error = EINVAL, i, j;
446 struct nfsd_idargs nid;
447 struct nfsd_oidargs onid;
448 struct {
449 int vers; /* Just the first field of nfsstats. */
450 } nfsstatver;
451
452 if (uap->flag & NFSSVC_IDNAME) {
453 if ((uap->flag & NFSSVC_NEWSTRUCT) != 0)
454 error = copyin(uap->argp, &nid, sizeof(nid));
455 else {
456 error = copyin(uap->argp, &onid, sizeof(onid));
457 if (error == 0) {
458 nid.nid_flag = onid.nid_flag;
459 nid.nid_uid = onid.nid_uid;
460 nid.nid_gid = onid.nid_gid;
461 nid.nid_usermax = onid.nid_usermax;
462 nid.nid_usertimeout = onid.nid_usertimeout;
463 nid.nid_name = onid.nid_name;
464 nid.nid_namelen = onid.nid_namelen;
465 nid.nid_ngroup = 0;
466 nid.nid_grps = NULL;
467 }
468 }
469 if (error)
470 goto out;
471 error = nfssvc_idname(&nid);
472 goto out;
473 } else if (uap->flag & NFSSVC_GETSTATS) {
474 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
475 /* Copy fields to the old ext_nfsstat structure. */
476 oldnfsstats.attrcache_hits =
477 nfsstatsv1.attrcache_hits;
478 oldnfsstats.attrcache_misses =
479 nfsstatsv1.attrcache_misses;
480 oldnfsstats.lookupcache_hits =
481 nfsstatsv1.lookupcache_hits;
482 oldnfsstats.lookupcache_misses =
483 nfsstatsv1.lookupcache_misses;
484 oldnfsstats.direofcache_hits =
485 nfsstatsv1.direofcache_hits;
486 oldnfsstats.direofcache_misses =
487 nfsstatsv1.direofcache_misses;
488 oldnfsstats.accesscache_hits =
489 nfsstatsv1.accesscache_hits;
490 oldnfsstats.accesscache_misses =
491 nfsstatsv1.accesscache_misses;
492 oldnfsstats.biocache_reads =
493 nfsstatsv1.biocache_reads;
494 oldnfsstats.read_bios =
495 nfsstatsv1.read_bios;
496 oldnfsstats.read_physios =
497 nfsstatsv1.read_physios;
498 oldnfsstats.biocache_writes =
499 nfsstatsv1.biocache_writes;
500 oldnfsstats.write_bios =
501 nfsstatsv1.write_bios;
502 oldnfsstats.write_physios =
503 nfsstatsv1.write_physios;
504 oldnfsstats.biocache_readlinks =
505 nfsstatsv1.biocache_readlinks;
506 oldnfsstats.readlink_bios =
507 nfsstatsv1.readlink_bios;
508 oldnfsstats.biocache_readdirs =
509 nfsstatsv1.biocache_readdirs;
510 oldnfsstats.readdir_bios =
511 nfsstatsv1.readdir_bios;
512 for (i = 0; i < NFSV4_NPROCS; i++)
513 oldnfsstats.rpccnt[i] = nfsstatsv1.rpccnt[i];
514 oldnfsstats.rpcretries = nfsstatsv1.rpcretries;
515 for (i = 0; i < NFSV4OP_NOPS; i++)
516 oldnfsstats.srvrpccnt[i] =
517 nfsstatsv1.srvrpccnt[i];
518 for (i = NFSV42_NOPS, j = NFSV4OP_NOPS;
519 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++)
520 oldnfsstats.srvrpccnt[j] =
521 nfsstatsv1.srvrpccnt[i];
522 oldnfsstats.reserved_0 = 0;
523 oldnfsstats.reserved_1 = 0;
524 oldnfsstats.rpcrequests = nfsstatsv1.rpcrequests;
525 oldnfsstats.rpctimeouts = nfsstatsv1.rpctimeouts;
526 oldnfsstats.rpcunexpected = nfsstatsv1.rpcunexpected;
527 oldnfsstats.rpcinvalid = nfsstatsv1.rpcinvalid;
528 oldnfsstats.srvcache_inproghits =
529 nfsstatsv1.srvcache_inproghits;
530 oldnfsstats.reserved_2 = 0;
531 oldnfsstats.srvcache_nonidemdonehits =
532 nfsstatsv1.srvcache_nonidemdonehits;
533 oldnfsstats.srvcache_misses =
534 nfsstatsv1.srvcache_misses;
535 oldnfsstats.srvcache_tcppeak =
536 nfsstatsv1.srvcache_tcppeak;
537 oldnfsstats.srvcache_size = nfsstatsv1.srvcache_size;
538 oldnfsstats.srvclients = nfsstatsv1.srvclients;
539 oldnfsstats.srvopenowners = nfsstatsv1.srvopenowners;
540 oldnfsstats.srvopens = nfsstatsv1.srvopens;
541 oldnfsstats.srvlockowners = nfsstatsv1.srvlockowners;
542 oldnfsstats.srvlocks = nfsstatsv1.srvlocks;
543 oldnfsstats.srvdelegates = nfsstatsv1.srvdelegates;
544 for (i = 0; i < NFSV4OP_CBNOPS; i++)
545 oldnfsstats.cbrpccnt[i] =
546 nfsstatsv1.cbrpccnt[i];
547 oldnfsstats.clopenowners = nfsstatsv1.clopenowners;
548 oldnfsstats.clopens = nfsstatsv1.clopens;
549 oldnfsstats.cllockowners = nfsstatsv1.cllockowners;
550 oldnfsstats.cllocks = nfsstatsv1.cllocks;
551 oldnfsstats.cldelegates = nfsstatsv1.cldelegates;
552 oldnfsstats.cllocalopenowners =
553 nfsstatsv1.cllocalopenowners;
554 oldnfsstats.cllocalopens = nfsstatsv1.cllocalopens;
555 oldnfsstats.cllocallockowners =
556 nfsstatsv1.cllocallockowners;
557 oldnfsstats.cllocallocks = nfsstatsv1.cllocallocks;
558 error = copyout(&oldnfsstats, uap->argp,
559 sizeof (oldnfsstats));
560 } else {
561 error = copyin(uap->argp, &nfsstatver,
562 sizeof(nfsstatver));
563 if (error == 0) {
564 if (nfsstatver.vers == NFSSTATS_OV1) {
565 /* Copy nfsstatsv1 to nfsstatsov1. */
566 nfsstatsov1.attrcache_hits =
567 nfsstatsv1.attrcache_hits;
568 nfsstatsov1.attrcache_misses =
569 nfsstatsv1.attrcache_misses;
570 nfsstatsov1.lookupcache_hits =
571 nfsstatsv1.lookupcache_hits;
572 nfsstatsov1.lookupcache_misses =
573 nfsstatsv1.lookupcache_misses;
574 nfsstatsov1.direofcache_hits =
575 nfsstatsv1.direofcache_hits;
576 nfsstatsov1.direofcache_misses =
577 nfsstatsv1.direofcache_misses;
578 nfsstatsov1.accesscache_hits =
579 nfsstatsv1.accesscache_hits;
580 nfsstatsov1.accesscache_misses =
581 nfsstatsv1.accesscache_misses;
582 nfsstatsov1.biocache_reads =
583 nfsstatsv1.biocache_reads;
584 nfsstatsov1.read_bios =
585 nfsstatsv1.read_bios;
586 nfsstatsov1.read_physios =
587 nfsstatsv1.read_physios;
588 nfsstatsov1.biocache_writes =
589 nfsstatsv1.biocache_writes;
590 nfsstatsov1.write_bios =
591 nfsstatsv1.write_bios;
592 nfsstatsov1.write_physios =
593 nfsstatsv1.write_physios;
594 nfsstatsov1.biocache_readlinks =
595 nfsstatsv1.biocache_readlinks;
596 nfsstatsov1.readlink_bios =
597 nfsstatsv1.readlink_bios;
598 nfsstatsov1.biocache_readdirs =
599 nfsstatsv1.biocache_readdirs;
600 nfsstatsov1.readdir_bios =
601 nfsstatsv1.readdir_bios;
602 for (i = 0; i < NFSV42_NPROCS; i++)
603 nfsstatsov1.rpccnt[i] =
604 nfsstatsv1.rpccnt[i];
605 nfsstatsov1.rpcretries =
606 nfsstatsv1.rpcretries;
607 for (i = 0; i < NFSV42_PURENOPS; i++)
608 nfsstatsov1.srvrpccnt[i] =
609 nfsstatsv1.srvrpccnt[i];
610 for (i = NFSV42_NOPS,
611 j = NFSV42_PURENOPS;
612 i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
613 i++, j++)
614 nfsstatsov1.srvrpccnt[j] =
615 nfsstatsv1.srvrpccnt[i];
616 nfsstatsov1.reserved_0 = 0;
617 nfsstatsov1.reserved_1 = 0;
618 nfsstatsov1.rpcrequests =
619 nfsstatsv1.rpcrequests;
620 nfsstatsov1.rpctimeouts =
621 nfsstatsv1.rpctimeouts;
622 nfsstatsov1.rpcunexpected =
623 nfsstatsv1.rpcunexpected;
624 nfsstatsov1.rpcinvalid =
625 nfsstatsv1.rpcinvalid;
626 nfsstatsov1.srvcache_inproghits =
627 nfsstatsv1.srvcache_inproghits;
628 nfsstatsov1.reserved_2 = 0;
629 nfsstatsov1.srvcache_nonidemdonehits =
630 nfsstatsv1.srvcache_nonidemdonehits;
631 nfsstatsov1.srvcache_misses =
632 nfsstatsv1.srvcache_misses;
633 nfsstatsov1.srvcache_tcppeak =
634 nfsstatsv1.srvcache_tcppeak;
635 nfsstatsov1.srvcache_size =
636 nfsstatsv1.srvcache_size;
637 nfsstatsov1.srvclients =
638 nfsstatsv1.srvclients;
639 nfsstatsov1.srvopenowners =
640 nfsstatsv1.srvopenowners;
641 nfsstatsov1.srvopens =
642 nfsstatsv1.srvopens;
643 nfsstatsov1.srvlockowners =
644 nfsstatsv1.srvlockowners;
645 nfsstatsov1.srvlocks =
646 nfsstatsv1.srvlocks;
647 nfsstatsov1.srvdelegates =
648 nfsstatsv1.srvdelegates;
649 for (i = 0; i < NFSV42_CBNOPS; i++)
650 nfsstatsov1.cbrpccnt[i] =
651 nfsstatsv1.cbrpccnt[i];
652 nfsstatsov1.clopenowners =
653 nfsstatsv1.clopenowners;
654 nfsstatsov1.clopens =
655 nfsstatsv1.clopens;
656 nfsstatsov1.cllockowners =
657 nfsstatsv1.cllockowners;
658 nfsstatsov1.cllocks =
659 nfsstatsv1.cllocks;
660 nfsstatsov1.cldelegates =
661 nfsstatsv1.cldelegates;
662 nfsstatsov1.cllocalopenowners =
663 nfsstatsv1.cllocalopenowners;
664 nfsstatsov1.cllocalopens =
665 nfsstatsv1.cllocalopens;
666 nfsstatsov1.cllocallockowners =
667 nfsstatsv1.cllocallockowners;
668 nfsstatsov1.cllocallocks =
669 nfsstatsv1.cllocallocks;
670 nfsstatsov1.srvstartcnt =
671 nfsstatsv1.srvstartcnt;
672 nfsstatsov1.srvdonecnt =
673 nfsstatsv1.srvdonecnt;
674 for (i = NFSV42_NOPS,
675 j = NFSV42_PURENOPS;
676 i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
677 i++, j++) {
678 nfsstatsov1.srvbytes[j] =
679 nfsstatsv1.srvbytes[i];
680 nfsstatsov1.srvops[j] =
681 nfsstatsv1.srvops[i];
682 nfsstatsov1.srvduration[j] =
683 nfsstatsv1.srvduration[i];
684 }
685 nfsstatsov1.busyfrom =
686 nfsstatsv1.busyfrom;
687 nfsstatsov1.busyfrom =
688 nfsstatsv1.busyfrom;
689 error = copyout(&nfsstatsov1, uap->argp,
690 sizeof(nfsstatsov1));
691 } else if (nfsstatver.vers != NFSSTATS_V1)
692 error = EPERM;
693 else
694 error = copyout(&nfsstatsv1, uap->argp,
695 sizeof(nfsstatsv1));
696 }
697 }
698 if (error == 0) {
699 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) {
700 nfsstatsv1.attrcache_hits = 0;
701 nfsstatsv1.attrcache_misses = 0;
702 nfsstatsv1.lookupcache_hits = 0;
703 nfsstatsv1.lookupcache_misses = 0;
704 nfsstatsv1.direofcache_hits = 0;
705 nfsstatsv1.direofcache_misses = 0;
706 nfsstatsv1.accesscache_hits = 0;
707 nfsstatsv1.accesscache_misses = 0;
708 nfsstatsv1.biocache_reads = 0;
709 nfsstatsv1.read_bios = 0;
710 nfsstatsv1.read_physios = 0;
711 nfsstatsv1.biocache_writes = 0;
712 nfsstatsv1.write_bios = 0;
713 nfsstatsv1.write_physios = 0;
714 nfsstatsv1.biocache_readlinks = 0;
715 nfsstatsv1.readlink_bios = 0;
716 nfsstatsv1.biocache_readdirs = 0;
717 nfsstatsv1.readdir_bios = 0;
718 nfsstatsv1.rpcretries = 0;
719 nfsstatsv1.rpcrequests = 0;
720 nfsstatsv1.rpctimeouts = 0;
721 nfsstatsv1.rpcunexpected = 0;
722 nfsstatsv1.rpcinvalid = 0;
723 bzero(nfsstatsv1.rpccnt,
724 sizeof(nfsstatsv1.rpccnt));
725 }
726 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) {
727 nfsstatsv1.srvcache_inproghits = 0;
728 nfsstatsv1.srvcache_nonidemdonehits = 0;
729 nfsstatsv1.srvcache_misses = 0;
730 nfsstatsv1.srvcache_tcppeak = 0;
731 bzero(nfsstatsv1.srvrpccnt,
732 sizeof(nfsstatsv1.srvrpccnt));
733 bzero(nfsstatsv1.cbrpccnt,
734 sizeof(nfsstatsv1.cbrpccnt));
735 }
736 }
737 goto out;
738 } else if (uap->flag & NFSSVC_NFSUSERDPORT) {
739 u_short sockport;
740 struct nfsuserd_args nargs;
741
742 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
743 error = copyin(uap->argp, (caddr_t)&sockport,
744 sizeof (u_short));
745 if (error == 0) {
746 nargs.nuserd_family = AF_INET;
747 nargs.nuserd_port = sockport;
748 }
749 } else {
750 /*
751 * New nfsuserd_args structure, which indicates
752 * which IP version to use along with the port#.
753 */
754 error = copyin(uap->argp, &nargs, sizeof(nargs));
755 }
756 if (!error)
757 error = nfsrv_nfsuserdport(&nargs, p);
758 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) {
759 nfsrv_nfsuserddelport();
760 error = 0;
761 }
762
763 out:
764 NFSEXITCODE(error);
765 return (error);
766 }
767
768 /*
769 * called by all three modevent routines, so that it gets things
770 * initialized soon enough.
771 */
772 void
newnfs_portinit(void)773 newnfs_portinit(void)
774 {
775 static int inited = 0;
776
777 if (inited)
778 return;
779 inited = 1;
780 /* Initialize SMP locks used by both client and server. */
781 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF);
782 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF);
783 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL, MTX_DEF);
784 }
785
786 /*
787 * Determine if the file system supports NFSv4 ACLs.
788 * Return 1 if it does, 0 otherwise.
789 */
790 int
nfs_supportsnfsv4acls(struct vnode * vp)791 nfs_supportsnfsv4acls(struct vnode *vp)
792 {
793 int error;
794 long retval;
795
796 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls");
797
798 if (nfsrv_useacl == 0)
799 return (0);
800 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval);
801 if (error == 0 && retval != 0)
802 return (1);
803 return (0);
804 }
805
806 /*
807 * These are the first fields of all the context structures passed into
808 * nfs_pnfsio().
809 */
810 struct pnfsio {
811 int done;
812 int inprog;
813 struct task tsk;
814 };
815
816 /*
817 * Do a mirror I/O on a pNFS thread.
818 */
819 int
nfs_pnfsio(task_fn_t * func,void * context)820 nfs_pnfsio(task_fn_t *func, void *context)
821 {
822 struct pnfsio *pio;
823 int ret;
824 static struct taskqueue *pnfsioq = NULL;
825
826 pio = (struct pnfsio *)context;
827 if (pnfsioq == NULL) {
828 if (nfs_pnfsiothreads == 0)
829 return (EPERM);
830 if (nfs_pnfsiothreads < 0)
831 nfs_pnfsiothreads = mp_ncpus * 4;
832 pnfsioq = taskqueue_create("pnfsioq", M_WAITOK,
833 taskqueue_thread_enqueue, &pnfsioq);
834 if (pnfsioq == NULL)
835 return (ENOMEM);
836 ret = taskqueue_start_threads(&pnfsioq, nfs_pnfsiothreads,
837 0, "pnfsiot");
838 if (ret != 0) {
839 taskqueue_free(pnfsioq);
840 pnfsioq = NULL;
841 return (ret);
842 }
843 }
844 pio->inprog = 1;
845 TASK_INIT(&pio->tsk, 0, func, context);
846 ret = taskqueue_enqueue(pnfsioq, &pio->tsk);
847 if (ret != 0)
848 pio->inprog = 0;
849 return (ret);
850 }
851
852 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *);
853
854 /*
855 * Called once to initialize data structures...
856 */
857 static int
nfscommon_modevent(module_t mod,int type,void * data)858 nfscommon_modevent(module_t mod, int type, void *data)
859 {
860 int error = 0;
861 static int loaded = 0;
862
863 switch (type) {
864 case MOD_LOAD:
865 if (loaded)
866 goto out;
867 newnfs_portinit();
868 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF);
869 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF);
870 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF);
871 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF);
872 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL,
873 MTX_DEF);
874 mtx_init(&nfsrv_dslock_mtx, "nfs4ds", NULL, MTX_DEF);
875 TAILQ_INIT(&nfsrv_devidhead);
876 newnfs_init();
877 nfsd_call_nfscommon = nfssvc_nfscommon;
878 loaded = 1;
879 break;
880
881 case MOD_UNLOAD:
882 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != NOTRUNNING ||
883 nfs_numnfscbd != 0) {
884 error = EBUSY;
885 break;
886 }
887
888 nfsd_call_nfscommon = NULL;
889 /* Clean out the name<-->id cache. */
890 nfsrv_cleanusergroup();
891 /* and get rid of the mutexes */
892 mtx_destroy(&nfs_nameid_mutex);
893 mtx_destroy(&newnfsd_mtx);
894 mtx_destroy(&nfs_state_mutex);
895 mtx_destroy(&nfs_clstate_mutex);
896 mtx_destroy(&nfs_sockl_mutex);
897 mtx_destroy(&nfs_slock_mutex);
898 mtx_destroy(&nfs_req_mutex);
899 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx);
900 mtx_destroy(&nfsrv_dslock_mtx);
901 loaded = 0;
902 break;
903 default:
904 error = EOPNOTSUPP;
905 break;
906 }
907
908 out:
909 NFSEXITCODE(error);
910 return error;
911 }
912 static moduledata_t nfscommon_mod = {
913 "nfscommon",
914 nfscommon_modevent,
915 NULL,
916 };
917 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY);
918
919 /* So that loader and kldload(2) can find us, wherever we are.. */
920 MODULE_VERSION(nfscommon, 1);
921 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1);
922 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);
923