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 /*
38 * Functions that need to be different for different versions of BSD
39 * kernel should be kept here, along with any global storage specific
40 * to this BSD variant.
41 */
42 #include <fs/nfs/nfsport.h>
43 #include <sys/smp.h>
44 #include <sys/sysctl.h>
45 #include <sys/taskqueue.h>
46 #include <rpc/rpc_com.h>
47 #include <vm/vm.h>
48 #include <vm/vm_object.h>
49 #include <vm/vm_page.h>
50 #include <vm/vm_param.h>
51 #include <vm/vm_map.h>
52 #include <vm/vm_kern.h>
53 #include <vm/vm_extern.h>
54 #include <vm/uma.h>
55
56 extern int nfscl_ticks;
57 extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *,
58 struct thread *);
59 extern int nfsrv_useacl;
60 int newnfs_numnfsd = 0;
61 struct nfsstatsv1 nfsstatsv1;
62 int nfs_numnfscbd = 0;
63 int nfscl_debuglevel = 0;
64 char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
65 int nfsrv_lughashsize = 100;
66 struct mtx nfsrv_dslock_mtx;
67 struct nfsdevicehead nfsrv_devidhead;
68 volatile int nfsrv_devidcnt = 0;
69 void (*ncl_call_invalcaches)(struct vnode *) = NULL;
70 vop_advlock_t *nfs_advlock_p = NULL;
71 vop_reclaim_t *nfs_reclaim_p = NULL;
72 uint32_t nfs_srvmaxio = NFS_SRVMAXIO;
73
74 NFSD_VNET_DEFINE(struct nfsstatsv1 *, nfsstatsv1_p);
75
76 NFSD_VNET_DECLARE(struct nfssockreq, nfsrv_nfsuserdsock);
77 NFSD_VNET_DECLARE(nfsuserd_state, nfsrv_nfsuserd);
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_NEWNFSDIROFF, "NFSCL diroff",
125 "NFS directory offset data");
126 MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback",
127 "NFS local lock rollback");
128 MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout");
129 MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout");
130 MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info");
131 MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req");
132 MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session");
133 MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall");
134 MALLOC_DEFINE(M_NEWNFSDSESSION, "NFSD session", "NFSD Session for a client");
135
136 /*
137 * Definition of mutex locks.
138 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list
139 * and assorted other nfsd structures.
140 */
141 struct mtx newnfsd_mtx;
142 struct mtx nfs_sockl_mutex;
143 struct mtx nfs_state_mutex;
144 struct mtx nfs_nameid_mutex;
145 struct mtx nfs_req_mutex;
146 struct mtx nfs_slock_mutex;
147 struct mtx nfs_clstate_mutex;
148
149 /* local functions */
150 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *);
151
152 #ifdef __NO_STRICT_ALIGNMENT
153 /*
154 * These architectures don't need re-alignment, so just return.
155 */
156 int
newnfs_realign(struct mbuf ** pm,int how)157 newnfs_realign(struct mbuf **pm, int how)
158 {
159
160 return (0);
161 }
162 #else /* !__NO_STRICT_ALIGNMENT */
163 /*
164 * newnfs_realign:
165 *
166 * Check for badly aligned mbuf data and realign by copying the unaligned
167 * portion of the data into a new mbuf chain and freeing the portions
168 * of the old chain that were replaced.
169 *
170 * We cannot simply realign the data within the existing mbuf chain
171 * because the underlying buffers may contain other rpc commands and
172 * we cannot afford to overwrite them.
173 *
174 * We would prefer to avoid this situation entirely. The situation does
175 * not occur with NFS/UDP and is supposed to only occasionally occur
176 * with TCP. Use vfs.nfs.realign_count and realign_test to check this.
177 *
178 */
179 int
newnfs_realign(struct mbuf ** pm,int how)180 newnfs_realign(struct mbuf **pm, int how)
181 {
182 struct mbuf *m, *n;
183 int off, space;
184
185 ++nfs_realign_test;
186 while ((m = *pm) != NULL) {
187 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) {
188 /*
189 * NB: we can't depend on m_pkthdr.len to help us
190 * decide what to do here. May not be worth doing
191 * the m_length calculation as m_copyback will
192 * expand the mbuf chain below as needed.
193 */
194 space = m_length(m, NULL);
195 if (space >= MINCLSIZE) {
196 /* NB: m_copyback handles space > MCLBYTES */
197 n = m_getcl(how, MT_DATA, 0);
198 } else
199 n = m_get(how, MT_DATA);
200 if (n == NULL)
201 return (ENOMEM);
202 /*
203 * Align the remainder of the mbuf chain.
204 */
205 n->m_len = 0;
206 off = 0;
207 while (m != NULL) {
208 m_copyback(n, off, m->m_len, mtod(m, caddr_t));
209 off += m->m_len;
210 m = m->m_next;
211 }
212 m_freem(*pm);
213 *pm = n;
214 ++nfs_realign_count;
215 break;
216 }
217 pm = &m->m_next;
218 }
219
220 return (0);
221 }
222 #endif /* __NO_STRICT_ALIGNMENT */
223
224 #ifdef notdef
225 static void
nfsrv_object_create(struct vnode * vp,struct thread * td)226 nfsrv_object_create(struct vnode *vp, struct thread *td)
227 {
228
229 if (vp == NULL || vp->v_type != VREG)
230 return;
231 (void) vfs_object_create(vp, td, td->td_ucred);
232 }
233 #endif
234
235 /*
236 * Look up a file name. Basically just initialize stuff and call namei().
237 */
238 int
nfsrv_lookupfilename(struct nameidata * ndp,char * fname,NFSPROC_T * p __unused)239 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p __unused)
240 {
241 int error;
242
243 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname);
244 error = namei(ndp);
245 if (!error) {
246 NDFREE_PNBUF(ndp);
247 }
248 return (error);
249 }
250
251 /*
252 * Copy NFS uid, gids to the cred structure.
253 */
254 void
newnfs_copycred(struct nfscred * nfscr,struct ucred * cr)255 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr)
256 {
257
258 KASSERT(nfscr->nfsc_ngroups >= 0,
259 ("newnfs_copycred: negative nfsc_ngroups"));
260 cr->cr_uid = nfscr->nfsc_uid;
261 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups);
262 }
263
264 /*
265 * Map args from nfsmsleep() to msleep().
266 */
267 int
nfsmsleep(void * chan,void * mutex,int prio,const char * wmesg,struct timespec * ts)268 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg,
269 struct timespec *ts)
270 {
271 u_int64_t nsecval;
272 int error, timeo;
273
274 if (ts) {
275 timeo = hz * ts->tv_sec;
276 nsecval = (u_int64_t)ts->tv_nsec;
277 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) /
278 1000000000;
279 timeo += (int)nsecval;
280 } else {
281 timeo = 0;
282 }
283 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo);
284 return (error);
285 }
286
287 /*
288 * Get the file system info for the server. For now, just assume FFS.
289 */
290 void
nfsvno_getfs(struct nfsfsinfo * sip,int isdgram)291 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram)
292 {
293 int pref;
294
295 /*
296 * XXX
297 * There should be file system VFS OP(s) to get this information.
298 * For now, assume ufs.
299 */
300 if (isdgram)
301 pref = NFS_MAXDGRAMDATA;
302 else
303 pref = nfs_srvmaxio;
304 sip->fs_rtmax = nfs_srvmaxio;
305 sip->fs_rtpref = pref;
306 sip->fs_rtmult = NFS_FABLKSIZE;
307 sip->fs_wtmax = nfs_srvmaxio;
308 sip->fs_wtpref = pref;
309 sip->fs_wtmult = NFS_FABLKSIZE;
310 sip->fs_dtpref = pref;
311 sip->fs_maxfilesize = 0xffffffffffffffffull;
312 sip->fs_timedelta.tv_sec = 0;
313 sip->fs_timedelta.tv_nsec = 1;
314 sip->fs_properties = (NFSV3FSINFO_LINK |
315 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
316 NFSV3FSINFO_CANSETTIME);
317 }
318
319 /*
320 * Do the pathconf vnode op.
321 */
322 int
nfsvno_pathconf(struct vnode * vp,int flag,long * retf,struct ucred * cred,struct thread * p)323 nfsvno_pathconf(struct vnode *vp, int flag, long *retf,
324 struct ucred *cred, struct thread *p)
325 {
326 int error;
327
328 error = VOP_PATHCONF(vp, flag, retf);
329 if (error == EOPNOTSUPP || error == EINVAL) {
330 /*
331 * Some file systems return EINVAL for name arguments not
332 * supported and some return EOPNOTSUPP for this case.
333 * So the NFSv3 Pathconf RPC doesn't fail for these cases,
334 * just fake them.
335 */
336 switch (flag) {
337 case _PC_LINK_MAX:
338 *retf = NFS_LINK_MAX;
339 break;
340 case _PC_NAME_MAX:
341 *retf = NAME_MAX;
342 break;
343 case _PC_CHOWN_RESTRICTED:
344 *retf = 1;
345 break;
346 case _PC_NO_TRUNC:
347 *retf = 1;
348 break;
349 default:
350 /*
351 * Only happens if a _PC_xxx is added to the server,
352 * but this isn't updated.
353 */
354 *retf = 0;
355 printf("nfsrvd pathconf flag=%d not supp\n", flag);
356 }
357 error = 0;
358 }
359 NFSEXITCODE(error);
360 return (error);
361 }
362
363 /* Fake nfsrv_atroot. Just return 0 */
364 int
nfsrv_atroot(struct vnode * vp,uint64_t * retp)365 nfsrv_atroot(struct vnode *vp, uint64_t *retp)
366 {
367
368 return (0);
369 }
370
371 /*
372 * Set the credentials to refer to root.
373 * If only the various BSDen could agree on whether cr_gid is a separate
374 * field or cr_groups[0]...
375 */
376 void
newnfs_setroot(struct ucred * cred)377 newnfs_setroot(struct ucred *cred)
378 {
379
380 cred->cr_uid = 0;
381 cred->cr_groups[0] = 0;
382 cred->cr_ngroups = 1;
383 }
384
385 /*
386 * Get the client credential. Used for Renew and recovery.
387 */
388 struct ucred *
newnfs_getcred(void)389 newnfs_getcred(void)
390 {
391 struct ucred *cred;
392 struct thread *td = curthread;
393
394 cred = crdup(td->td_ucred);
395 newnfs_setroot(cred);
396 return (cred);
397 }
398
399 /*
400 * Sleep for a short period of time unless errval == NFSERR_GRACE, where
401 * the sleep should be for 5 seconds.
402 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on
403 * an event that never gets a wakeup. Only return EINTR or 0.
404 */
405 int
nfs_catnap(int prio,int errval,const char * wmesg)406 nfs_catnap(int prio, int errval, const char *wmesg)
407 {
408 static int non_event;
409 int ret;
410
411 if (errval == NFSERR_GRACE)
412 ret = tsleep(&non_event, prio, wmesg, 5 * hz);
413 else
414 ret = tsleep(&non_event, prio, wmesg, 1);
415 if (ret != EINTR)
416 ret = 0;
417 return (ret);
418 }
419
420 /*
421 * Get referral. For now, just fail.
422 */
423 struct nfsreferral *
nfsv4root_getreferral(struct vnode * vp,struct vnode * dvp,u_int32_t fileno)424 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno)
425 {
426
427 return (NULL);
428 }
429
430 static int
nfssvc_nfscommon(struct thread * td,struct nfssvc_args * uap)431 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap)
432 {
433 int error;
434
435 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(td));
436 error = nfssvc_call(td, uap, td->td_ucred);
437 NFSD_CURVNET_RESTORE();
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 NFSD_VNET(nfsstatsv1_p)->attrcache_hits;
478 oldnfsstats.attrcache_misses =
479 NFSD_VNET(nfsstatsv1_p)->attrcache_misses;
480 oldnfsstats.lookupcache_hits =
481 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits;
482 oldnfsstats.lookupcache_misses =
483 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses;
484 oldnfsstats.direofcache_hits =
485 NFSD_VNET(nfsstatsv1_p)->direofcache_hits;
486 oldnfsstats.direofcache_misses =
487 NFSD_VNET(nfsstatsv1_p)->direofcache_misses;
488 oldnfsstats.accesscache_hits =
489 NFSD_VNET(nfsstatsv1_p)->accesscache_hits;
490 oldnfsstats.accesscache_misses =
491 NFSD_VNET(nfsstatsv1_p)->accesscache_misses;
492 oldnfsstats.biocache_reads =
493 NFSD_VNET(nfsstatsv1_p)->biocache_reads;
494 oldnfsstats.read_bios =
495 NFSD_VNET(nfsstatsv1_p)->read_bios;
496 oldnfsstats.read_physios =
497 NFSD_VNET(nfsstatsv1_p)->read_physios;
498 oldnfsstats.biocache_writes =
499 NFSD_VNET(nfsstatsv1_p)->biocache_writes;
500 oldnfsstats.write_bios =
501 NFSD_VNET(nfsstatsv1_p)->write_bios;
502 oldnfsstats.write_physios =
503 NFSD_VNET(nfsstatsv1_p)->write_physios;
504 oldnfsstats.biocache_readlinks =
505 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks;
506 oldnfsstats.readlink_bios =
507 NFSD_VNET(nfsstatsv1_p)->readlink_bios;
508 oldnfsstats.biocache_readdirs =
509 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs;
510 oldnfsstats.readdir_bios =
511 NFSD_VNET(nfsstatsv1_p)->readdir_bios;
512 for (i = 0; i < NFSV4_NPROCS; i++)
513 oldnfsstats.rpccnt[i] =
514 NFSD_VNET(nfsstatsv1_p)->rpccnt[i];
515 oldnfsstats.rpcretries =
516 NFSD_VNET(nfsstatsv1_p)->rpcretries;
517 for (i = 0; i < NFSV4OP_NOPS; i++)
518 oldnfsstats.srvrpccnt[i] =
519 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
520 for (i = NFSV42_NOPS, j = NFSV4OP_NOPS;
521 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++)
522 oldnfsstats.srvrpccnt[j] =
523 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
524 oldnfsstats.reserved_0 = 0;
525 oldnfsstats.reserved_1 = 0;
526 oldnfsstats.rpcrequests =
527 NFSD_VNET(nfsstatsv1_p)->rpcrequests;
528 oldnfsstats.rpctimeouts =
529 NFSD_VNET(nfsstatsv1_p)->rpctimeouts;
530 oldnfsstats.rpcunexpected =
531 NFSD_VNET(nfsstatsv1_p)->rpcunexpected;
532 oldnfsstats.rpcinvalid =
533 NFSD_VNET(nfsstatsv1_p)->rpcinvalid;
534 oldnfsstats.srvcache_inproghits =
535 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits;
536 oldnfsstats.reserved_2 = 0;
537 oldnfsstats.srvcache_nonidemdonehits =
538 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits;
539 oldnfsstats.srvcache_misses =
540 NFSD_VNET(nfsstatsv1_p)->srvcache_misses;
541 oldnfsstats.srvcache_tcppeak =
542 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak;
543 oldnfsstats.srvcache_size =
544 NFSD_VNET(nfsstatsv1_p)->srvcache_size;
545 oldnfsstats.srvclients =
546 NFSD_VNET(nfsstatsv1_p)->srvclients;
547 oldnfsstats.srvopenowners =
548 NFSD_VNET(nfsstatsv1_p)->srvopenowners;
549 oldnfsstats.srvopens =
550 NFSD_VNET(nfsstatsv1_p)->srvopens;
551 oldnfsstats.srvlockowners =
552 NFSD_VNET(nfsstatsv1_p)->srvlockowners;
553 oldnfsstats.srvlocks =
554 NFSD_VNET(nfsstatsv1_p)->srvlocks;
555 oldnfsstats.srvdelegates =
556 NFSD_VNET(nfsstatsv1_p)->srvdelegates;
557 for (i = 0; i < NFSV4OP_CBNOPS; i++)
558 oldnfsstats.cbrpccnt[i] =
559 NFSD_VNET(nfsstatsv1_p)->cbrpccnt[i];
560 oldnfsstats.clopenowners =
561 NFSD_VNET(nfsstatsv1_p)->clopenowners;
562 oldnfsstats.clopens = NFSD_VNET(nfsstatsv1_p)->clopens;
563 oldnfsstats.cllockowners =
564 NFSD_VNET(nfsstatsv1_p)->cllockowners;
565 oldnfsstats.cllocks = NFSD_VNET(nfsstatsv1_p)->cllocks;
566 oldnfsstats.cldelegates =
567 NFSD_VNET(nfsstatsv1_p)->cldelegates;
568 oldnfsstats.cllocalopenowners =
569 NFSD_VNET(nfsstatsv1_p)->cllocalopenowners;
570 oldnfsstats.cllocalopens =
571 NFSD_VNET(nfsstatsv1_p)->cllocalopens;
572 oldnfsstats.cllocallockowners =
573 NFSD_VNET(nfsstatsv1_p)->cllocallockowners;
574 oldnfsstats.cllocallocks =
575 NFSD_VNET(nfsstatsv1_p)->cllocallocks;
576 error = copyout(&oldnfsstats, uap->argp,
577 sizeof (oldnfsstats));
578 } else {
579 error = copyin(uap->argp, &nfsstatver,
580 sizeof(nfsstatver));
581 if (error == 0) {
582 if (nfsstatver.vers == NFSSTATS_OV1) {
583 /* Copy nfsstatsv1 to nfsstatsov1. */
584 nfsstatsov1.attrcache_hits =
585 NFSD_VNET(nfsstatsv1_p)->attrcache_hits;
586 nfsstatsov1.attrcache_misses =
587 NFSD_VNET(nfsstatsv1_p)->attrcache_misses;
588 nfsstatsov1.lookupcache_hits =
589 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits;
590 nfsstatsov1.lookupcache_misses =
591 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses;
592 nfsstatsov1.direofcache_hits =
593 NFSD_VNET(nfsstatsv1_p)->direofcache_hits;
594 nfsstatsov1.direofcache_misses =
595 NFSD_VNET(nfsstatsv1_p)->direofcache_misses;
596 nfsstatsov1.accesscache_hits =
597 NFSD_VNET(nfsstatsv1_p)->accesscache_hits;
598 nfsstatsov1.accesscache_misses =
599 NFSD_VNET(nfsstatsv1_p)->accesscache_misses;
600 nfsstatsov1.biocache_reads =
601 NFSD_VNET(nfsstatsv1_p)->biocache_reads;
602 nfsstatsov1.read_bios =
603 NFSD_VNET(nfsstatsv1_p)->read_bios;
604 nfsstatsov1.read_physios =
605 NFSD_VNET(nfsstatsv1_p)->read_physios;
606 nfsstatsov1.biocache_writes =
607 NFSD_VNET(nfsstatsv1_p)->biocache_writes;
608 nfsstatsov1.write_bios =
609 NFSD_VNET(nfsstatsv1_p)->write_bios;
610 nfsstatsov1.write_physios =
611 NFSD_VNET(nfsstatsv1_p)->write_physios;
612 nfsstatsov1.biocache_readlinks =
613 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks;
614 nfsstatsov1.readlink_bios =
615 NFSD_VNET(nfsstatsv1_p)->readlink_bios;
616 nfsstatsov1.biocache_readdirs =
617 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs;
618 nfsstatsov1.readdir_bios =
619 NFSD_VNET(nfsstatsv1_p)->readdir_bios;
620 for (i = 0; i < NFSV42_OLDNPROCS; i++)
621 nfsstatsov1.rpccnt[i] =
622 NFSD_VNET(nfsstatsv1_p)->rpccnt[i];
623 nfsstatsov1.rpcretries =
624 NFSD_VNET(nfsstatsv1_p)->rpcretries;
625 for (i = 0; i < NFSV42_PURENOPS; i++)
626 nfsstatsov1.srvrpccnt[i] =
627 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
628 for (i = NFSV42_NOPS,
629 j = NFSV42_PURENOPS;
630 i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
631 i++, j++)
632 nfsstatsov1.srvrpccnt[j] =
633 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
634 nfsstatsov1.reserved_0 = 0;
635 nfsstatsov1.reserved_1 = 0;
636 nfsstatsov1.rpcrequests =
637 NFSD_VNET(nfsstatsv1_p)->rpcrequests;
638 nfsstatsov1.rpctimeouts =
639 NFSD_VNET(nfsstatsv1_p)->rpctimeouts;
640 nfsstatsov1.rpcunexpected =
641 NFSD_VNET(nfsstatsv1_p)->rpcunexpected;
642 nfsstatsov1.rpcinvalid =
643 NFSD_VNET(nfsstatsv1_p)->rpcinvalid;
644 nfsstatsov1.srvcache_inproghits =
645 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits;
646 nfsstatsov1.reserved_2 = 0;
647 nfsstatsov1.srvcache_nonidemdonehits =
648 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits;
649 nfsstatsov1.srvcache_misses =
650 NFSD_VNET(nfsstatsv1_p)->srvcache_misses;
651 nfsstatsov1.srvcache_tcppeak =
652 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak;
653 nfsstatsov1.srvcache_size =
654 NFSD_VNET(nfsstatsv1_p)->srvcache_size;
655 nfsstatsov1.srvclients =
656 NFSD_VNET(nfsstatsv1_p)->srvclients;
657 nfsstatsov1.srvopenowners =
658 NFSD_VNET(nfsstatsv1_p)->srvopenowners;
659 nfsstatsov1.srvopens =
660 NFSD_VNET(nfsstatsv1_p)->srvopens;
661 nfsstatsov1.srvlockowners =
662 NFSD_VNET(nfsstatsv1_p)->srvlockowners;
663 nfsstatsov1.srvlocks =
664 NFSD_VNET(nfsstatsv1_p)->srvlocks;
665 nfsstatsov1.srvdelegates =
666 NFSD_VNET(nfsstatsv1_p)->srvdelegates;
667 for (i = 0; i < NFSV42_CBNOPS; i++)
668 nfsstatsov1.cbrpccnt[i] =
669 NFSD_VNET(nfsstatsv1_p)->cbrpccnt[i];
670 nfsstatsov1.clopenowners =
671 NFSD_VNET(nfsstatsv1_p)->clopenowners;
672 nfsstatsov1.clopens =
673 NFSD_VNET(nfsstatsv1_p)->clopens;
674 nfsstatsov1.cllockowners =
675 NFSD_VNET(nfsstatsv1_p)->cllockowners;
676 nfsstatsov1.cllocks =
677 NFSD_VNET(nfsstatsv1_p)->cllocks;
678 nfsstatsov1.cldelegates =
679 NFSD_VNET(nfsstatsv1_p)->cldelegates;
680 nfsstatsov1.cllocalopenowners =
681 NFSD_VNET(nfsstatsv1_p)->cllocalopenowners;
682 nfsstatsov1.cllocalopens =
683 NFSD_VNET(nfsstatsv1_p)->cllocalopens;
684 nfsstatsov1.cllocallockowners =
685 NFSD_VNET(nfsstatsv1_p)->cllocallockowners;
686 nfsstatsov1.cllocallocks =
687 NFSD_VNET(nfsstatsv1_p)->cllocallocks;
688 nfsstatsov1.srvstartcnt =
689 NFSD_VNET(nfsstatsv1_p)->srvstartcnt;
690 nfsstatsov1.srvdonecnt =
691 NFSD_VNET(nfsstatsv1_p)->srvdonecnt;
692 for (i = NFSV42_NOPS,
693 j = NFSV42_PURENOPS;
694 i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
695 i++, j++) {
696 nfsstatsov1.srvbytes[j] =
697 NFSD_VNET(nfsstatsv1_p)->srvbytes[i];
698 nfsstatsov1.srvops[j] =
699 NFSD_VNET(nfsstatsv1_p)->srvops[i];
700 nfsstatsov1.srvduration[j] =
701 NFSD_VNET(nfsstatsv1_p)->srvduration[i];
702 }
703 nfsstatsov1.busyfrom =
704 NFSD_VNET(nfsstatsv1_p)->busyfrom;
705 nfsstatsov1.busyfrom =
706 NFSD_VNET(nfsstatsv1_p)->busyfrom;
707 error = copyout(&nfsstatsov1, uap->argp,
708 sizeof(nfsstatsov1));
709 } else if (nfsstatver.vers != NFSSTATS_V1)
710 error = EPERM;
711 else
712 error = copyout(NFSD_VNET(nfsstatsv1_p),
713 uap->argp, sizeof(nfsstatsv1));
714 }
715 }
716 if (error == 0) {
717 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) {
718 NFSD_VNET(nfsstatsv1_p)->attrcache_hits = 0;
719 NFSD_VNET(nfsstatsv1_p)->attrcache_misses = 0;
720 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits = 0;
721 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses = 0;
722 NFSD_VNET(nfsstatsv1_p)->direofcache_hits = 0;
723 NFSD_VNET(nfsstatsv1_p)->direofcache_misses = 0;
724 NFSD_VNET(nfsstatsv1_p)->accesscache_hits = 0;
725 NFSD_VNET(nfsstatsv1_p)->accesscache_misses = 0;
726 NFSD_VNET(nfsstatsv1_p)->biocache_reads = 0;
727 NFSD_VNET(nfsstatsv1_p)->read_bios = 0;
728 NFSD_VNET(nfsstatsv1_p)->read_physios = 0;
729 NFSD_VNET(nfsstatsv1_p)->biocache_writes = 0;
730 NFSD_VNET(nfsstatsv1_p)->write_bios = 0;
731 NFSD_VNET(nfsstatsv1_p)->write_physios = 0;
732 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks = 0;
733 NFSD_VNET(nfsstatsv1_p)->readlink_bios = 0;
734 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs = 0;
735 NFSD_VNET(nfsstatsv1_p)->readdir_bios = 0;
736 NFSD_VNET(nfsstatsv1_p)->rpcretries = 0;
737 NFSD_VNET(nfsstatsv1_p)->rpcrequests = 0;
738 NFSD_VNET(nfsstatsv1_p)->rpctimeouts = 0;
739 NFSD_VNET(nfsstatsv1_p)->rpcunexpected = 0;
740 NFSD_VNET(nfsstatsv1_p)->rpcinvalid = 0;
741 bzero(NFSD_VNET(nfsstatsv1_p)->rpccnt,
742 sizeof(NFSD_VNET(nfsstatsv1_p)->rpccnt));
743 }
744 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) {
745 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits = 0;
746 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits = 0;
747 NFSD_VNET(nfsstatsv1_p)->srvcache_misses = 0;
748 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak = 0;
749 bzero(NFSD_VNET(nfsstatsv1_p)->srvrpccnt,
750 sizeof(NFSD_VNET(nfsstatsv1_p)->srvrpccnt));
751 bzero(NFSD_VNET(nfsstatsv1_p)->cbrpccnt,
752 sizeof(NFSD_VNET(nfsstatsv1_p)->cbrpccnt));
753 }
754 }
755 goto out;
756 } else if (uap->flag & NFSSVC_NFSUSERDPORT) {
757 u_short sockport;
758 struct nfsuserd_args nargs;
759
760 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
761 error = copyin(uap->argp, (caddr_t)&sockport,
762 sizeof (u_short));
763 if (error == 0) {
764 nargs.nuserd_family = AF_INET;
765 nargs.nuserd_port = sockport;
766 }
767 } else {
768 /*
769 * New nfsuserd_args structure, which indicates
770 * which IP version to use along with the port#.
771 */
772 error = copyin(uap->argp, &nargs, sizeof(nargs));
773 }
774 if (!error)
775 error = nfsrv_nfsuserdport(&nargs, p);
776 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) {
777 nfsrv_nfsuserddelport();
778 error = 0;
779 }
780
781 out:
782 NFSEXITCODE(error);
783 return (error);
784 }
785
786 /*
787 * called by all three modevent routines, so that it gets things
788 * initialized soon enough.
789 */
790 void
newnfs_portinit(void)791 newnfs_portinit(void)
792 {
793 static int inited = 0;
794
795 if (inited)
796 return;
797 inited = 1;
798 /* Initialize SMP locks used by both client and server. */
799 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF);
800 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF);
801 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL, MTX_DEF);
802 }
803
804 /*
805 * Determine if the file system supports NFSv4 ACLs.
806 * Return 1 if it does, 0 otherwise.
807 */
808 int
nfs_supportsnfsv4acls(struct vnode * vp)809 nfs_supportsnfsv4acls(struct vnode *vp)
810 {
811 int error;
812 long retval;
813
814 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls");
815
816 if (nfsrv_useacl == 0)
817 return (0);
818 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval);
819 if (error == 0 && retval != 0)
820 return (1);
821 return (0);
822 }
823
824 /*
825 * These are the first fields of all the context structures passed into
826 * nfs_pnfsio().
827 */
828 struct pnfsio {
829 int done;
830 int inprog;
831 struct task tsk;
832 };
833
834 /*
835 * Do a mirror I/O on a pNFS thread.
836 */
837 int
nfs_pnfsio(task_fn_t * func,void * context)838 nfs_pnfsio(task_fn_t *func, void *context)
839 {
840 struct pnfsio *pio;
841 int ret;
842 static struct taskqueue *pnfsioq = NULL;
843
844 pio = (struct pnfsio *)context;
845 if (pnfsioq == NULL) {
846 if (nfs_pnfsiothreads == 0)
847 return (EPERM);
848 if (nfs_pnfsiothreads < 0)
849 nfs_pnfsiothreads = mp_ncpus * 4;
850 pnfsioq = taskqueue_create("pnfsioq", M_WAITOK,
851 taskqueue_thread_enqueue, &pnfsioq);
852 if (pnfsioq == NULL)
853 return (ENOMEM);
854 ret = taskqueue_start_threads(&pnfsioq, nfs_pnfsiothreads,
855 0, "pnfsiot");
856 if (ret != 0) {
857 taskqueue_free(pnfsioq);
858 pnfsioq = NULL;
859 return (ret);
860 }
861 }
862 pio->inprog = 1;
863 TASK_INIT(&pio->tsk, 0, func, context);
864 ret = taskqueue_enqueue(pnfsioq, &pio->tsk);
865 if (ret != 0)
866 pio->inprog = 0;
867 return (ret);
868 }
869
870 /*
871 * Initialize everything that needs to be initialized for a vnet.
872 */
873 static void
nfs_vnetinit(const void * unused __unused)874 nfs_vnetinit(const void *unused __unused)
875 {
876
877 if (IS_DEFAULT_VNET(curvnet))
878 NFSD_VNET(nfsstatsv1_p) = &nfsstatsv1;
879 else
880 NFSD_VNET(nfsstatsv1_p) = malloc(sizeof(struct nfsstatsv1),
881 M_TEMP, M_WAITOK | M_ZERO);
882 mtx_init(&NFSD_VNET(nfsrv_nfsuserdsock).nr_mtx, "nfsuserd",
883 NULL, MTX_DEF);
884 }
885 VNET_SYSINIT(nfs_vnetinit, SI_SUB_VNET_DONE, SI_ORDER_FIRST,
886 nfs_vnetinit, NULL);
887
888 static void
nfs_cleanup(void * unused __unused)889 nfs_cleanup(void *unused __unused)
890 {
891
892 mtx_destroy(&NFSD_VNET(nfsrv_nfsuserdsock).nr_mtx);
893 if (!IS_DEFAULT_VNET(curvnet)) {
894 free(NFSD_VNET(nfsstatsv1_p), M_TEMP);
895 NFSD_VNET(nfsstatsv1_p) = NULL;
896 }
897 /* Clean out the name<-->id cache. */
898 nfsrv_cleanusergroup();
899 }
900 VNET_SYSUNINIT(nfs_cleanup, SI_SUB_VNET_DONE, SI_ORDER_FIRST,
901 nfs_cleanup, NULL);
902
903 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *);
904
905 /*
906 * Called once to initialize data structures...
907 */
908 static int
nfscommon_modevent(module_t mod,int type,void * data)909 nfscommon_modevent(module_t mod, int type, void *data)
910 {
911 int error = 0;
912 static int loaded = 0;
913
914 switch (type) {
915 case MOD_LOAD:
916 if (loaded)
917 goto out;
918 newnfs_portinit();
919 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF);
920 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF);
921 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF);
922 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF);
923 mtx_init(&nfsrv_dslock_mtx, "nfs4ds", NULL, MTX_DEF);
924 TAILQ_INIT(&nfsrv_devidhead);
925 newnfs_init();
926 nfsd_call_nfscommon = nfssvc_nfscommon;
927 loaded = 1;
928 break;
929
930 case MOD_UNLOAD:
931 if (newnfs_numnfsd != 0 ||
932 NFSD_VNET(nfsrv_nfsuserd) != NOTRUNNING ||
933 nfs_numnfscbd != 0) {
934 error = EBUSY;
935 break;
936 }
937
938 nfsd_call_nfscommon = NULL;
939 /* and get rid of the mutexes */
940 mtx_destroy(&nfs_nameid_mutex);
941 mtx_destroy(&newnfsd_mtx);
942 mtx_destroy(&nfs_state_mutex);
943 mtx_destroy(&nfs_clstate_mutex);
944 mtx_destroy(&nfs_sockl_mutex);
945 mtx_destroy(&nfs_slock_mutex);
946 mtx_destroy(&nfs_req_mutex);
947 mtx_destroy(&nfsrv_dslock_mtx);
948 loaded = 0;
949 break;
950 default:
951 error = EOPNOTSUPP;
952 break;
953 }
954
955 out:
956 NFSEXITCODE(error);
957 return error;
958 }
959 static moduledata_t nfscommon_mod = {
960 "nfscommon",
961 nfscommon_modevent,
962 NULL,
963 };
964 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY);
965
966 /* So that loader and kldload(2) can find us, wherever we are.. */
967 MODULE_VERSION(nfscommon, 1);
968 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1);
969 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);
970