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)239 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p)
240 {
241 int error;
242
243 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname,
244 p);
245 error = namei(ndp);
246 if (!error) {
247 NDFREE(ndp, NDF_ONLY_PNBUF);
248 }
249 return (error);
250 }
251
252 /*
253 * Copy NFS uid, gids to the cred structure.
254 */
255 void
newnfs_copycred(struct nfscred * nfscr,struct ucred * cr)256 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr)
257 {
258
259 KASSERT(nfscr->nfsc_ngroups >= 0,
260 ("newnfs_copycred: negative nfsc_ngroups"));
261 cr->cr_uid = nfscr->nfsc_uid;
262 crsetgroups_fallback(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups,
263 GID_NOGROUP);
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 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(td));
438 error = nfssvc_call(td, uap, td->td_ucred);
439 NFSD_CURVNET_RESTORE();
440 NFSEXITCODE(error);
441 return (error);
442 }
443
444 static int
nfssvc_call(struct thread * p,struct nfssvc_args * uap,struct ucred * cred)445 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
446 {
447 int error = EINVAL, i, j;
448 struct nfsd_idargs nid;
449 struct nfsd_oidargs onid;
450 struct {
451 int vers; /* Just the first field of nfsstats. */
452 } nfsstatver;
453
454 if (uap->flag & NFSSVC_IDNAME) {
455 if ((uap->flag & NFSSVC_NEWSTRUCT) != 0)
456 error = copyin(uap->argp, &nid, sizeof(nid));
457 else {
458 error = copyin(uap->argp, &onid, sizeof(onid));
459 if (error == 0) {
460 nid.nid_flag = onid.nid_flag;
461 nid.nid_uid = onid.nid_uid;
462 nid.nid_gid = onid.nid_gid;
463 nid.nid_usermax = onid.nid_usermax;
464 nid.nid_usertimeout = onid.nid_usertimeout;
465 nid.nid_name = onid.nid_name;
466 nid.nid_namelen = onid.nid_namelen;
467 nid.nid_ngroup = 0;
468 nid.nid_grps = NULL;
469 }
470 }
471 if (error)
472 goto out;
473 error = nfssvc_idname(&nid);
474 goto out;
475 } else if (uap->flag & NFSSVC_GETSTATS) {
476 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
477 /* Copy fields to the old ext_nfsstat structure. */
478 oldnfsstats.attrcache_hits =
479 NFSD_VNET(nfsstatsv1_p)->attrcache_hits;
480 oldnfsstats.attrcache_misses =
481 NFSD_VNET(nfsstatsv1_p)->attrcache_misses;
482 oldnfsstats.lookupcache_hits =
483 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits;
484 oldnfsstats.lookupcache_misses =
485 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses;
486 oldnfsstats.direofcache_hits =
487 NFSD_VNET(nfsstatsv1_p)->direofcache_hits;
488 oldnfsstats.direofcache_misses =
489 NFSD_VNET(nfsstatsv1_p)->direofcache_misses;
490 oldnfsstats.accesscache_hits =
491 NFSD_VNET(nfsstatsv1_p)->accesscache_hits;
492 oldnfsstats.accesscache_misses =
493 NFSD_VNET(nfsstatsv1_p)->accesscache_misses;
494 oldnfsstats.biocache_reads =
495 NFSD_VNET(nfsstatsv1_p)->biocache_reads;
496 oldnfsstats.read_bios =
497 NFSD_VNET(nfsstatsv1_p)->read_bios;
498 oldnfsstats.read_physios =
499 NFSD_VNET(nfsstatsv1_p)->read_physios;
500 oldnfsstats.biocache_writes =
501 NFSD_VNET(nfsstatsv1_p)->biocache_writes;
502 oldnfsstats.write_bios =
503 NFSD_VNET(nfsstatsv1_p)->write_bios;
504 oldnfsstats.write_physios =
505 NFSD_VNET(nfsstatsv1_p)->write_physios;
506 oldnfsstats.biocache_readlinks =
507 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks;
508 oldnfsstats.readlink_bios =
509 NFSD_VNET(nfsstatsv1_p)->readlink_bios;
510 oldnfsstats.biocache_readdirs =
511 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs;
512 oldnfsstats.readdir_bios =
513 NFSD_VNET(nfsstatsv1_p)->readdir_bios;
514 for (i = 0; i < NFSV4_NPROCS; i++)
515 oldnfsstats.rpccnt[i] =
516 NFSD_VNET(nfsstatsv1_p)->rpccnt[i];
517 oldnfsstats.rpcretries =
518 NFSD_VNET(nfsstatsv1_p)->rpcretries;
519 for (i = 0; i < NFSV4OP_NOPS; i++)
520 oldnfsstats.srvrpccnt[i] =
521 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
522 for (i = NFSV42_NOPS, j = NFSV4OP_NOPS;
523 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++)
524 oldnfsstats.srvrpccnt[j] =
525 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
526 oldnfsstats.reserved_0 = 0;
527 oldnfsstats.reserved_1 = 0;
528 oldnfsstats.rpcrequests =
529 NFSD_VNET(nfsstatsv1_p)->rpcrequests;
530 oldnfsstats.rpctimeouts =
531 NFSD_VNET(nfsstatsv1_p)->rpctimeouts;
532 oldnfsstats.rpcunexpected =
533 NFSD_VNET(nfsstatsv1_p)->rpcunexpected;
534 oldnfsstats.rpcinvalid =
535 NFSD_VNET(nfsstatsv1_p)->rpcinvalid;
536 oldnfsstats.srvcache_inproghits =
537 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits;
538 oldnfsstats.reserved_2 = 0;
539 oldnfsstats.srvcache_nonidemdonehits =
540 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits;
541 oldnfsstats.srvcache_misses =
542 NFSD_VNET(nfsstatsv1_p)->srvcache_misses;
543 oldnfsstats.srvcache_tcppeak =
544 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak;
545 oldnfsstats.srvcache_size =
546 NFSD_VNET(nfsstatsv1_p)->srvcache_size;
547 oldnfsstats.srvclients =
548 NFSD_VNET(nfsstatsv1_p)->srvclients;
549 oldnfsstats.srvopenowners =
550 NFSD_VNET(nfsstatsv1_p)->srvopenowners;
551 oldnfsstats.srvopens =
552 NFSD_VNET(nfsstatsv1_p)->srvopens;
553 oldnfsstats.srvlockowners =
554 NFSD_VNET(nfsstatsv1_p)->srvlockowners;
555 oldnfsstats.srvlocks =
556 NFSD_VNET(nfsstatsv1_p)->srvlocks;
557 oldnfsstats.srvdelegates =
558 NFSD_VNET(nfsstatsv1_p)->srvdelegates;
559 for (i = 0; i < NFSV4OP_CBNOPS; i++)
560 oldnfsstats.cbrpccnt[i] =
561 NFSD_VNET(nfsstatsv1_p)->cbrpccnt[i];
562 oldnfsstats.clopenowners =
563 NFSD_VNET(nfsstatsv1_p)->clopenowners;
564 oldnfsstats.clopens = NFSD_VNET(nfsstatsv1_p)->clopens;
565 oldnfsstats.cllockowners =
566 NFSD_VNET(nfsstatsv1_p)->cllockowners;
567 oldnfsstats.cllocks = NFSD_VNET(nfsstatsv1_p)->cllocks;
568 oldnfsstats.cldelegates =
569 NFSD_VNET(nfsstatsv1_p)->cldelegates;
570 oldnfsstats.cllocalopenowners =
571 NFSD_VNET(nfsstatsv1_p)->cllocalopenowners;
572 oldnfsstats.cllocalopens =
573 NFSD_VNET(nfsstatsv1_p)->cllocalopens;
574 oldnfsstats.cllocallockowners =
575 NFSD_VNET(nfsstatsv1_p)->cllocallockowners;
576 oldnfsstats.cllocallocks =
577 NFSD_VNET(nfsstatsv1_p)->cllocallocks;
578 error = copyout(&oldnfsstats, uap->argp,
579 sizeof (oldnfsstats));
580 } else {
581 error = copyin(uap->argp, &nfsstatver,
582 sizeof(nfsstatver));
583 if (error == 0) {
584 if (nfsstatver.vers == NFSSTATS_OV1) {
585 /* Copy nfsstatsv1 to nfsstatsov1. */
586 nfsstatsov1.attrcache_hits =
587 NFSD_VNET(nfsstatsv1_p)->attrcache_hits;
588 nfsstatsov1.attrcache_misses =
589 NFSD_VNET(nfsstatsv1_p)->attrcache_misses;
590 nfsstatsov1.lookupcache_hits =
591 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits;
592 nfsstatsov1.lookupcache_misses =
593 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses;
594 nfsstatsov1.direofcache_hits =
595 NFSD_VNET(nfsstatsv1_p)->direofcache_hits;
596 nfsstatsov1.direofcache_misses =
597 NFSD_VNET(nfsstatsv1_p)->direofcache_misses;
598 nfsstatsov1.accesscache_hits =
599 NFSD_VNET(nfsstatsv1_p)->accesscache_hits;
600 nfsstatsov1.accesscache_misses =
601 NFSD_VNET(nfsstatsv1_p)->accesscache_misses;
602 nfsstatsov1.biocache_reads =
603 NFSD_VNET(nfsstatsv1_p)->biocache_reads;
604 nfsstatsov1.read_bios =
605 NFSD_VNET(nfsstatsv1_p)->read_bios;
606 nfsstatsov1.read_physios =
607 NFSD_VNET(nfsstatsv1_p)->read_physios;
608 nfsstatsov1.biocache_writes =
609 NFSD_VNET(nfsstatsv1_p)->biocache_writes;
610 nfsstatsov1.write_bios =
611 NFSD_VNET(nfsstatsv1_p)->write_bios;
612 nfsstatsov1.write_physios =
613 NFSD_VNET(nfsstatsv1_p)->write_physios;
614 nfsstatsov1.biocache_readlinks =
615 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks;
616 nfsstatsov1.readlink_bios =
617 NFSD_VNET(nfsstatsv1_p)->readlink_bios;
618 nfsstatsov1.biocache_readdirs =
619 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs;
620 nfsstatsov1.readdir_bios =
621 NFSD_VNET(nfsstatsv1_p)->readdir_bios;
622 for (i = 0; i < NFSV42_OLDNPROCS; i++)
623 nfsstatsov1.rpccnt[i] =
624 NFSD_VNET(nfsstatsv1_p)->rpccnt[i];
625 nfsstatsov1.rpcretries =
626 NFSD_VNET(nfsstatsv1_p)->rpcretries;
627 for (i = 0; i < NFSV42_PURENOPS; i++)
628 nfsstatsov1.srvrpccnt[i] =
629 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
630 for (i = NFSV42_NOPS,
631 j = NFSV42_PURENOPS;
632 i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
633 i++, j++)
634 nfsstatsov1.srvrpccnt[j] =
635 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
636 nfsstatsov1.reserved_0 = 0;
637 nfsstatsov1.reserved_1 = 0;
638 nfsstatsov1.rpcrequests =
639 NFSD_VNET(nfsstatsv1_p)->rpcrequests;
640 nfsstatsov1.rpctimeouts =
641 NFSD_VNET(nfsstatsv1_p)->rpctimeouts;
642 nfsstatsov1.rpcunexpected =
643 NFSD_VNET(nfsstatsv1_p)->rpcunexpected;
644 nfsstatsov1.rpcinvalid =
645 NFSD_VNET(nfsstatsv1_p)->rpcinvalid;
646 nfsstatsov1.srvcache_inproghits =
647 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits;
648 nfsstatsov1.reserved_2 = 0;
649 nfsstatsov1.srvcache_nonidemdonehits =
650 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits;
651 nfsstatsov1.srvcache_misses =
652 NFSD_VNET(nfsstatsv1_p)->srvcache_misses;
653 nfsstatsov1.srvcache_tcppeak =
654 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak;
655 nfsstatsov1.srvcache_size =
656 NFSD_VNET(nfsstatsv1_p)->srvcache_size;
657 nfsstatsov1.srvclients =
658 NFSD_VNET(nfsstatsv1_p)->srvclients;
659 nfsstatsov1.srvopenowners =
660 NFSD_VNET(nfsstatsv1_p)->srvopenowners;
661 nfsstatsov1.srvopens =
662 NFSD_VNET(nfsstatsv1_p)->srvopens;
663 nfsstatsov1.srvlockowners =
664 NFSD_VNET(nfsstatsv1_p)->srvlockowners;
665 nfsstatsov1.srvlocks =
666 NFSD_VNET(nfsstatsv1_p)->srvlocks;
667 nfsstatsov1.srvdelegates =
668 NFSD_VNET(nfsstatsv1_p)->srvdelegates;
669 for (i = 0; i < NFSV42_CBNOPS; i++)
670 nfsstatsov1.cbrpccnt[i] =
671 NFSD_VNET(nfsstatsv1_p)->cbrpccnt[i];
672 nfsstatsov1.clopenowners =
673 NFSD_VNET(nfsstatsv1_p)->clopenowners;
674 nfsstatsov1.clopens =
675 NFSD_VNET(nfsstatsv1_p)->clopens;
676 nfsstatsov1.cllockowners =
677 NFSD_VNET(nfsstatsv1_p)->cllockowners;
678 nfsstatsov1.cllocks =
679 NFSD_VNET(nfsstatsv1_p)->cllocks;
680 nfsstatsov1.cldelegates =
681 NFSD_VNET(nfsstatsv1_p)->cldelegates;
682 nfsstatsov1.cllocalopenowners =
683 NFSD_VNET(nfsstatsv1_p)->cllocalopenowners;
684 nfsstatsov1.cllocalopens =
685 NFSD_VNET(nfsstatsv1_p)->cllocalopens;
686 nfsstatsov1.cllocallockowners =
687 NFSD_VNET(nfsstatsv1_p)->cllocallockowners;
688 nfsstatsov1.cllocallocks =
689 NFSD_VNET(nfsstatsv1_p)->cllocallocks;
690 nfsstatsov1.srvstartcnt =
691 NFSD_VNET(nfsstatsv1_p)->srvstartcnt;
692 nfsstatsov1.srvdonecnt =
693 NFSD_VNET(nfsstatsv1_p)->srvdonecnt;
694 for (i = NFSV42_NOPS,
695 j = NFSV42_PURENOPS;
696 i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
697 i++, j++) {
698 nfsstatsov1.srvbytes[j] =
699 NFSD_VNET(nfsstatsv1_p)->srvbytes[i];
700 nfsstatsov1.srvops[j] =
701 NFSD_VNET(nfsstatsv1_p)->srvops[i];
702 nfsstatsov1.srvduration[j] =
703 NFSD_VNET(nfsstatsv1_p)->srvduration[i];
704 }
705 nfsstatsov1.busyfrom =
706 NFSD_VNET(nfsstatsv1_p)->busyfrom;
707 nfsstatsov1.busyfrom =
708 NFSD_VNET(nfsstatsv1_p)->busyfrom;
709 error = copyout(&nfsstatsov1, uap->argp,
710 sizeof(nfsstatsov1));
711 } else if (nfsstatver.vers != NFSSTATS_V1)
712 error = EPERM;
713 else
714 error = copyout(NFSD_VNET(nfsstatsv1_p),
715 uap->argp, sizeof(nfsstatsv1));
716 }
717 }
718 if (error == 0) {
719 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) {
720 NFSD_VNET(nfsstatsv1_p)->attrcache_hits = 0;
721 NFSD_VNET(nfsstatsv1_p)->attrcache_misses = 0;
722 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits = 0;
723 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses = 0;
724 NFSD_VNET(nfsstatsv1_p)->direofcache_hits = 0;
725 NFSD_VNET(nfsstatsv1_p)->direofcache_misses = 0;
726 NFSD_VNET(nfsstatsv1_p)->accesscache_hits = 0;
727 NFSD_VNET(nfsstatsv1_p)->accesscache_misses = 0;
728 NFSD_VNET(nfsstatsv1_p)->biocache_reads = 0;
729 NFSD_VNET(nfsstatsv1_p)->read_bios = 0;
730 NFSD_VNET(nfsstatsv1_p)->read_physios = 0;
731 NFSD_VNET(nfsstatsv1_p)->biocache_writes = 0;
732 NFSD_VNET(nfsstatsv1_p)->write_bios = 0;
733 NFSD_VNET(nfsstatsv1_p)->write_physios = 0;
734 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks = 0;
735 NFSD_VNET(nfsstatsv1_p)->readlink_bios = 0;
736 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs = 0;
737 NFSD_VNET(nfsstatsv1_p)->readdir_bios = 0;
738 NFSD_VNET(nfsstatsv1_p)->rpcretries = 0;
739 NFSD_VNET(nfsstatsv1_p)->rpcrequests = 0;
740 NFSD_VNET(nfsstatsv1_p)->rpctimeouts = 0;
741 NFSD_VNET(nfsstatsv1_p)->rpcunexpected = 0;
742 NFSD_VNET(nfsstatsv1_p)->rpcinvalid = 0;
743 bzero(NFSD_VNET(nfsstatsv1_p)->rpccnt,
744 sizeof(NFSD_VNET(nfsstatsv1_p)->rpccnt));
745 }
746 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) {
747 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits = 0;
748 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits = 0;
749 NFSD_VNET(nfsstatsv1_p)->srvcache_misses = 0;
750 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak = 0;
751 bzero(NFSD_VNET(nfsstatsv1_p)->srvrpccnt,
752 sizeof(NFSD_VNET(nfsstatsv1_p)->srvrpccnt));
753 bzero(NFSD_VNET(nfsstatsv1_p)->cbrpccnt,
754 sizeof(NFSD_VNET(nfsstatsv1_p)->cbrpccnt));
755 }
756 }
757 goto out;
758 } else if (uap->flag & NFSSVC_NFSUSERDPORT) {
759 u_short sockport;
760 struct nfsuserd_args nargs;
761
762 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
763 error = copyin(uap->argp, (caddr_t)&sockport,
764 sizeof (u_short));
765 if (error == 0) {
766 nargs.nuserd_family = AF_INET;
767 nargs.nuserd_port = sockport;
768 }
769 } else {
770 /*
771 * New nfsuserd_args structure, which indicates
772 * which IP version to use along with the port#.
773 */
774 error = copyin(uap->argp, &nargs, sizeof(nargs));
775 }
776 if (!error)
777 error = nfsrv_nfsuserdport(&nargs, p);
778 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) {
779 nfsrv_nfsuserddelport();
780 error = 0;
781 }
782
783 out:
784 NFSEXITCODE(error);
785 return (error);
786 }
787
788 /*
789 * called by all three modevent routines, so that it gets things
790 * initialized soon enough.
791 */
792 void
newnfs_portinit(void)793 newnfs_portinit(void)
794 {
795 static int inited = 0;
796
797 if (inited)
798 return;
799 inited = 1;
800 /* Initialize SMP locks used by both client and server. */
801 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF);
802 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF);
803 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL, MTX_DEF);
804 }
805
806 /*
807 * Determine if the file system supports NFSv4 ACLs.
808 * Return 1 if it does, 0 otherwise.
809 */
810 int
nfs_supportsnfsv4acls(struct vnode * vp)811 nfs_supportsnfsv4acls(struct vnode *vp)
812 {
813 int error;
814 long retval;
815
816 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls");
817
818 if (nfsrv_useacl == 0)
819 return (0);
820 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval);
821 if (error == 0 && retval != 0)
822 return (1);
823 return (0);
824 }
825
826 /*
827 * These are the first fields of all the context structures passed into
828 * nfs_pnfsio().
829 */
830 struct pnfsio {
831 int done;
832 int inprog;
833 struct task tsk;
834 };
835
836 /*
837 * Do a mirror I/O on a pNFS thread.
838 */
839 int
nfs_pnfsio(task_fn_t * func,void * context)840 nfs_pnfsio(task_fn_t *func, void *context)
841 {
842 struct pnfsio *pio;
843 int ret;
844 static struct taskqueue *pnfsioq = NULL;
845
846 pio = (struct pnfsio *)context;
847 if (pnfsioq == NULL) {
848 if (nfs_pnfsiothreads == 0)
849 return (EPERM);
850 if (nfs_pnfsiothreads < 0)
851 nfs_pnfsiothreads = mp_ncpus * 4;
852 pnfsioq = taskqueue_create("pnfsioq", M_WAITOK,
853 taskqueue_thread_enqueue, &pnfsioq);
854 if (pnfsioq == NULL)
855 return (ENOMEM);
856 ret = taskqueue_start_threads(&pnfsioq, nfs_pnfsiothreads,
857 0, "pnfsiot");
858 if (ret != 0) {
859 taskqueue_free(pnfsioq);
860 pnfsioq = NULL;
861 return (ret);
862 }
863 }
864 pio->inprog = 1;
865 TASK_INIT(&pio->tsk, 0, func, context);
866 ret = taskqueue_enqueue(pnfsioq, &pio->tsk);
867 if (ret != 0)
868 pio->inprog = 0;
869 return (ret);
870 }
871
872 /*
873 * Initialize everything that needs to be initialized for a vnet.
874 */
875 static void
nfs_vnetinit(const void * unused __unused)876 nfs_vnetinit(const void *unused __unused)
877 {
878
879 if (IS_DEFAULT_VNET(curvnet))
880 NFSD_VNET(nfsstatsv1_p) = &nfsstatsv1;
881 else
882 NFSD_VNET(nfsstatsv1_p) = malloc(sizeof(struct nfsstatsv1),
883 M_TEMP, M_WAITOK | M_ZERO);
884 mtx_init(&NFSD_VNET(nfsrv_nfsuserdsock).nr_mtx, "nfsuserd",
885 NULL, MTX_DEF);
886 }
887 VNET_SYSINIT(nfs_vnetinit, SI_SUB_VNET_DONE, SI_ORDER_FIRST,
888 nfs_vnetinit, NULL);
889
890 static void
nfs_cleanup(void * unused __unused)891 nfs_cleanup(void *unused __unused)
892 {
893
894 mtx_destroy(&NFSD_VNET(nfsrv_nfsuserdsock).nr_mtx);
895 if (!IS_DEFAULT_VNET(curvnet)) {
896 free(NFSD_VNET(nfsstatsv1_p), M_TEMP);
897 NFSD_VNET(nfsstatsv1_p) = NULL;
898 }
899 /* Clean out the name<-->id cache. */
900 nfsrv_cleanusergroup();
901 }
902 VNET_SYSUNINIT(nfs_cleanup, SI_SUB_VNET_DONE, SI_ORDER_FIRST,
903 nfs_cleanup, NULL);
904
905 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *);
906
907 /*
908 * Called once to initialize data structures...
909 */
910 static int
nfscommon_modevent(module_t mod,int type,void * data)911 nfscommon_modevent(module_t mod, int type, void *data)
912 {
913 int error = 0;
914 static int loaded = 0;
915
916 switch (type) {
917 case MOD_LOAD:
918 if (loaded)
919 goto out;
920 newnfs_portinit();
921 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF);
922 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF);
923 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF);
924 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF);
925 mtx_init(&nfsrv_dslock_mtx, "nfs4ds", NULL, MTX_DEF);
926 TAILQ_INIT(&nfsrv_devidhead);
927 newnfs_init();
928 nfsd_call_nfscommon = nfssvc_nfscommon;
929 loaded = 1;
930 break;
931
932 case MOD_UNLOAD:
933 if (newnfs_numnfsd != 0 ||
934 NFSD_VNET(nfsrv_nfsuserd) != NOTRUNNING ||
935 nfs_numnfscbd != 0) {
936 error = EBUSY;
937 break;
938 }
939
940 nfsd_call_nfscommon = NULL;
941 /* and get rid of the mutexes */
942 mtx_destroy(&nfs_nameid_mutex);
943 mtx_destroy(&newnfsd_mtx);
944 mtx_destroy(&nfs_state_mutex);
945 mtx_destroy(&nfs_clstate_mutex);
946 mtx_destroy(&nfs_sockl_mutex);
947 mtx_destroy(&nfs_slock_mutex);
948 mtx_destroy(&nfs_req_mutex);
949 mtx_destroy(&nfsrv_dslock_mtx);
950 loaded = 0;
951 break;
952 default:
953 error = EOPNOTSUPP;
954 break;
955 }
956
957 out:
958 NFSEXITCODE(error);
959 return error;
960 }
961 static moduledata_t nfscommon_mod = {
962 "nfscommon",
963 nfscommon_modevent,
964 NULL,
965 };
966 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY);
967
968 /* So that loader and kldload(2) can find us, wherever we are.. */
969 MODULE_VERSION(nfscommon, 1);
970 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1);
971 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);
972