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_fallback(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups,
262 GID_NOGROUP);
263 }
264
265 /*
266 * Map args from nfsmsleep() to msleep().
267 */
268 int
nfsmsleep(void * chan,void * mutex,int prio,const char * wmesg,struct timespec * ts)269 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg,
270 struct timespec *ts)
271 {
272 u_int64_t nsecval;
273 int error, timeo;
274
275 if (ts) {
276 timeo = hz * ts->tv_sec;
277 nsecval = (u_int64_t)ts->tv_nsec;
278 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) /
279 1000000000;
280 timeo += (int)nsecval;
281 } else {
282 timeo = 0;
283 }
284 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo);
285 return (error);
286 }
287
288 /*
289 * Get the file system info for the server. For now, just assume FFS.
290 */
291 void
nfsvno_getfs(struct nfsfsinfo * sip,int isdgram)292 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram)
293 {
294 int pref;
295
296 /*
297 * XXX
298 * There should be file system VFS OP(s) to get this information.
299 * For now, assume ufs.
300 */
301 if (isdgram)
302 pref = NFS_MAXDGRAMDATA;
303 else
304 pref = nfs_srvmaxio;
305 sip->fs_rtmax = nfs_srvmaxio;
306 sip->fs_rtpref = pref;
307 sip->fs_rtmult = NFS_FABLKSIZE;
308 sip->fs_wtmax = nfs_srvmaxio;
309 sip->fs_wtpref = pref;
310 sip->fs_wtmult = NFS_FABLKSIZE;
311 sip->fs_dtpref = pref;
312 sip->fs_maxfilesize = 0xffffffffffffffffull;
313 sip->fs_timedelta.tv_sec = 0;
314 sip->fs_timedelta.tv_nsec = 1;
315 sip->fs_properties = (NFSV3FSINFO_LINK |
316 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
317 NFSV3FSINFO_CANSETTIME);
318 }
319
320 /*
321 * Do the pathconf vnode op.
322 */
323 int
nfsvno_pathconf(struct vnode * vp,int flag,long * retf,struct ucred * cred,struct thread * p)324 nfsvno_pathconf(struct vnode *vp, int flag, long *retf,
325 struct ucred *cred, struct thread *p)
326 {
327 int error;
328
329 error = VOP_PATHCONF(vp, flag, retf);
330 if (error == EOPNOTSUPP || error == EINVAL) {
331 /*
332 * Some file systems return EINVAL for name arguments not
333 * supported and some return EOPNOTSUPP for this case.
334 * So the NFSv3 Pathconf RPC doesn't fail for these cases,
335 * just fake them.
336 */
337 switch (flag) {
338 case _PC_LINK_MAX:
339 *retf = NFS_LINK_MAX;
340 break;
341 case _PC_NAME_MAX:
342 *retf = NAME_MAX;
343 break;
344 case _PC_CHOWN_RESTRICTED:
345 *retf = 1;
346 break;
347 case _PC_NO_TRUNC:
348 *retf = 1;
349 break;
350 default:
351 /*
352 * Only happens if a _PC_xxx is added to the server,
353 * but this isn't updated.
354 */
355 *retf = 0;
356 printf("nfsrvd pathconf flag=%d not supp\n", flag);
357 }
358 error = 0;
359 }
360 NFSEXITCODE(error);
361 return (error);
362 }
363
364 /* Fake nfsrv_atroot. Just return 0 */
365 int
nfsrv_atroot(struct vnode * vp,uint64_t * retp)366 nfsrv_atroot(struct vnode *vp, uint64_t *retp)
367 {
368
369 return (0);
370 }
371
372 /*
373 * Set the credentials to refer to root.
374 * If only the various BSDen could agree on whether cr_gid is a separate
375 * field or cr_groups[0]...
376 */
377 void
newnfs_setroot(struct ucred * cred)378 newnfs_setroot(struct ucred *cred)
379 {
380
381 cred->cr_uid = 0;
382 cred->cr_groups[0] = 0;
383 cred->cr_ngroups = 1;
384 }
385
386 /*
387 * Get the client credential. Used for Renew and recovery.
388 */
389 struct ucred *
newnfs_getcred(void)390 newnfs_getcred(void)
391 {
392 struct ucred *cred;
393 struct thread *td = curthread;
394
395 cred = crdup(td->td_ucred);
396 newnfs_setroot(cred);
397 return (cred);
398 }
399
400 /*
401 * Sleep for a short period of time unless errval == NFSERR_GRACE, where
402 * the sleep should be for 5 seconds.
403 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on
404 * an event that never gets a wakeup. Only return EINTR or 0.
405 */
406 int
nfs_catnap(int prio,int errval,const char * wmesg)407 nfs_catnap(int prio, int errval, const char *wmesg)
408 {
409 static int non_event;
410 int ret;
411
412 if (errval == NFSERR_GRACE)
413 ret = tsleep(&non_event, prio, wmesg, 5 * hz);
414 else
415 ret = tsleep(&non_event, prio, wmesg, 1);
416 if (ret != EINTR)
417 ret = 0;
418 return (ret);
419 }
420
421 /*
422 * Get referral. For now, just fail.
423 */
424 struct nfsreferral *
nfsv4root_getreferral(struct vnode * vp,struct vnode * dvp,u_int32_t fileno)425 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno)
426 {
427
428 return (NULL);
429 }
430
431 static int
nfssvc_nfscommon(struct thread * td,struct nfssvc_args * uap)432 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap)
433 {
434 int error;
435
436 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(td));
437 error = nfssvc_call(td, uap, td->td_ucred);
438 NFSD_CURVNET_RESTORE();
439 NFSEXITCODE(error);
440 return (error);
441 }
442
443 static int
nfssvc_call(struct thread * p,struct nfssvc_args * uap,struct ucred * cred)444 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
445 {
446 int error = EINVAL, i, j;
447 struct nfsd_idargs nid;
448 struct nfsd_oidargs onid;
449 struct {
450 int vers; /* Just the first field of nfsstats. */
451 } nfsstatver;
452
453 if (uap->flag & NFSSVC_IDNAME) {
454 if ((uap->flag & NFSSVC_NEWSTRUCT) != 0)
455 error = copyin(uap->argp, &nid, sizeof(nid));
456 else {
457 error = copyin(uap->argp, &onid, sizeof(onid));
458 if (error == 0) {
459 nid.nid_flag = onid.nid_flag;
460 nid.nid_uid = onid.nid_uid;
461 nid.nid_gid = onid.nid_gid;
462 nid.nid_usermax = onid.nid_usermax;
463 nid.nid_usertimeout = onid.nid_usertimeout;
464 nid.nid_name = onid.nid_name;
465 nid.nid_namelen = onid.nid_namelen;
466 nid.nid_ngroup = 0;
467 nid.nid_grps = NULL;
468 }
469 }
470 if (error)
471 goto out;
472 error = nfssvc_idname(&nid);
473 goto out;
474 } else if (uap->flag & NFSSVC_GETSTATS) {
475 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
476 /* Copy fields to the old ext_nfsstat structure. */
477 oldnfsstats.attrcache_hits =
478 NFSD_VNET(nfsstatsv1_p)->attrcache_hits;
479 oldnfsstats.attrcache_misses =
480 NFSD_VNET(nfsstatsv1_p)->attrcache_misses;
481 oldnfsstats.lookupcache_hits =
482 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits;
483 oldnfsstats.lookupcache_misses =
484 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses;
485 oldnfsstats.direofcache_hits =
486 NFSD_VNET(nfsstatsv1_p)->direofcache_hits;
487 oldnfsstats.direofcache_misses =
488 NFSD_VNET(nfsstatsv1_p)->direofcache_misses;
489 oldnfsstats.accesscache_hits =
490 NFSD_VNET(nfsstatsv1_p)->accesscache_hits;
491 oldnfsstats.accesscache_misses =
492 NFSD_VNET(nfsstatsv1_p)->accesscache_misses;
493 oldnfsstats.biocache_reads =
494 NFSD_VNET(nfsstatsv1_p)->biocache_reads;
495 oldnfsstats.read_bios =
496 NFSD_VNET(nfsstatsv1_p)->read_bios;
497 oldnfsstats.read_physios =
498 NFSD_VNET(nfsstatsv1_p)->read_physios;
499 oldnfsstats.biocache_writes =
500 NFSD_VNET(nfsstatsv1_p)->biocache_writes;
501 oldnfsstats.write_bios =
502 NFSD_VNET(nfsstatsv1_p)->write_bios;
503 oldnfsstats.write_physios =
504 NFSD_VNET(nfsstatsv1_p)->write_physios;
505 oldnfsstats.biocache_readlinks =
506 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks;
507 oldnfsstats.readlink_bios =
508 NFSD_VNET(nfsstatsv1_p)->readlink_bios;
509 oldnfsstats.biocache_readdirs =
510 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs;
511 oldnfsstats.readdir_bios =
512 NFSD_VNET(nfsstatsv1_p)->readdir_bios;
513 for (i = 0; i < NFSV4_NPROCS; i++)
514 oldnfsstats.rpccnt[i] =
515 NFSD_VNET(nfsstatsv1_p)->rpccnt[i];
516 oldnfsstats.rpcretries =
517 NFSD_VNET(nfsstatsv1_p)->rpcretries;
518 for (i = 0; i < NFSV4OP_NOPS; i++)
519 oldnfsstats.srvrpccnt[i] =
520 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
521 for (i = NFSV42_NOPS, j = NFSV4OP_NOPS;
522 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++)
523 oldnfsstats.srvrpccnt[j] =
524 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
525 oldnfsstats.reserved_0 = 0;
526 oldnfsstats.reserved_1 = 0;
527 oldnfsstats.rpcrequests =
528 NFSD_VNET(nfsstatsv1_p)->rpcrequests;
529 oldnfsstats.rpctimeouts =
530 NFSD_VNET(nfsstatsv1_p)->rpctimeouts;
531 oldnfsstats.rpcunexpected =
532 NFSD_VNET(nfsstatsv1_p)->rpcunexpected;
533 oldnfsstats.rpcinvalid =
534 NFSD_VNET(nfsstatsv1_p)->rpcinvalid;
535 oldnfsstats.srvcache_inproghits =
536 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits;
537 oldnfsstats.reserved_2 = 0;
538 oldnfsstats.srvcache_nonidemdonehits =
539 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits;
540 oldnfsstats.srvcache_misses =
541 NFSD_VNET(nfsstatsv1_p)->srvcache_misses;
542 oldnfsstats.srvcache_tcppeak =
543 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak;
544 oldnfsstats.srvcache_size =
545 NFSD_VNET(nfsstatsv1_p)->srvcache_size;
546 oldnfsstats.srvclients =
547 NFSD_VNET(nfsstatsv1_p)->srvclients;
548 oldnfsstats.srvopenowners =
549 NFSD_VNET(nfsstatsv1_p)->srvopenowners;
550 oldnfsstats.srvopens =
551 NFSD_VNET(nfsstatsv1_p)->srvopens;
552 oldnfsstats.srvlockowners =
553 NFSD_VNET(nfsstatsv1_p)->srvlockowners;
554 oldnfsstats.srvlocks =
555 NFSD_VNET(nfsstatsv1_p)->srvlocks;
556 oldnfsstats.srvdelegates =
557 NFSD_VNET(nfsstatsv1_p)->srvdelegates;
558 for (i = 0; i < NFSV4OP_CBNOPS; i++)
559 oldnfsstats.cbrpccnt[i] =
560 NFSD_VNET(nfsstatsv1_p)->cbrpccnt[i];
561 oldnfsstats.clopenowners =
562 NFSD_VNET(nfsstatsv1_p)->clopenowners;
563 oldnfsstats.clopens = NFSD_VNET(nfsstatsv1_p)->clopens;
564 oldnfsstats.cllockowners =
565 NFSD_VNET(nfsstatsv1_p)->cllockowners;
566 oldnfsstats.cllocks = NFSD_VNET(nfsstatsv1_p)->cllocks;
567 oldnfsstats.cldelegates =
568 NFSD_VNET(nfsstatsv1_p)->cldelegates;
569 oldnfsstats.cllocalopenowners =
570 NFSD_VNET(nfsstatsv1_p)->cllocalopenowners;
571 oldnfsstats.cllocalopens =
572 NFSD_VNET(nfsstatsv1_p)->cllocalopens;
573 oldnfsstats.cllocallockowners =
574 NFSD_VNET(nfsstatsv1_p)->cllocallockowners;
575 oldnfsstats.cllocallocks =
576 NFSD_VNET(nfsstatsv1_p)->cllocallocks;
577 error = copyout(&oldnfsstats, uap->argp,
578 sizeof (oldnfsstats));
579 } else {
580 error = copyin(uap->argp, &nfsstatver,
581 sizeof(nfsstatver));
582 if (error == 0) {
583 if (nfsstatver.vers == NFSSTATS_OV1) {
584 /* Copy nfsstatsv1 to nfsstatsov1. */
585 nfsstatsov1.attrcache_hits =
586 NFSD_VNET(nfsstatsv1_p)->attrcache_hits;
587 nfsstatsov1.attrcache_misses =
588 NFSD_VNET(nfsstatsv1_p)->attrcache_misses;
589 nfsstatsov1.lookupcache_hits =
590 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits;
591 nfsstatsov1.lookupcache_misses =
592 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses;
593 nfsstatsov1.direofcache_hits =
594 NFSD_VNET(nfsstatsv1_p)->direofcache_hits;
595 nfsstatsov1.direofcache_misses =
596 NFSD_VNET(nfsstatsv1_p)->direofcache_misses;
597 nfsstatsov1.accesscache_hits =
598 NFSD_VNET(nfsstatsv1_p)->accesscache_hits;
599 nfsstatsov1.accesscache_misses =
600 NFSD_VNET(nfsstatsv1_p)->accesscache_misses;
601 nfsstatsov1.biocache_reads =
602 NFSD_VNET(nfsstatsv1_p)->biocache_reads;
603 nfsstatsov1.read_bios =
604 NFSD_VNET(nfsstatsv1_p)->read_bios;
605 nfsstatsov1.read_physios =
606 NFSD_VNET(nfsstatsv1_p)->read_physios;
607 nfsstatsov1.biocache_writes =
608 NFSD_VNET(nfsstatsv1_p)->biocache_writes;
609 nfsstatsov1.write_bios =
610 NFSD_VNET(nfsstatsv1_p)->write_bios;
611 nfsstatsov1.write_physios =
612 NFSD_VNET(nfsstatsv1_p)->write_physios;
613 nfsstatsov1.biocache_readlinks =
614 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks;
615 nfsstatsov1.readlink_bios =
616 NFSD_VNET(nfsstatsv1_p)->readlink_bios;
617 nfsstatsov1.biocache_readdirs =
618 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs;
619 nfsstatsov1.readdir_bios =
620 NFSD_VNET(nfsstatsv1_p)->readdir_bios;
621 for (i = 0; i < NFSV42_OLDNPROCS; i++)
622 nfsstatsov1.rpccnt[i] =
623 NFSD_VNET(nfsstatsv1_p)->rpccnt[i];
624 nfsstatsov1.rpcretries =
625 NFSD_VNET(nfsstatsv1_p)->rpcretries;
626 for (i = 0; i < NFSV42_PURENOPS; i++)
627 nfsstatsov1.srvrpccnt[i] =
628 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
629 for (i = NFSV42_NOPS,
630 j = NFSV42_PURENOPS;
631 i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
632 i++, j++)
633 nfsstatsov1.srvrpccnt[j] =
634 NFSD_VNET(nfsstatsv1_p)->srvrpccnt[i];
635 nfsstatsov1.reserved_0 = 0;
636 nfsstatsov1.reserved_1 = 0;
637 nfsstatsov1.rpcrequests =
638 NFSD_VNET(nfsstatsv1_p)->rpcrequests;
639 nfsstatsov1.rpctimeouts =
640 NFSD_VNET(nfsstatsv1_p)->rpctimeouts;
641 nfsstatsov1.rpcunexpected =
642 NFSD_VNET(nfsstatsv1_p)->rpcunexpected;
643 nfsstatsov1.rpcinvalid =
644 NFSD_VNET(nfsstatsv1_p)->rpcinvalid;
645 nfsstatsov1.srvcache_inproghits =
646 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits;
647 nfsstatsov1.reserved_2 = 0;
648 nfsstatsov1.srvcache_nonidemdonehits =
649 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits;
650 nfsstatsov1.srvcache_misses =
651 NFSD_VNET(nfsstatsv1_p)->srvcache_misses;
652 nfsstatsov1.srvcache_tcppeak =
653 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak;
654 nfsstatsov1.srvcache_size =
655 NFSD_VNET(nfsstatsv1_p)->srvcache_size;
656 nfsstatsov1.srvclients =
657 NFSD_VNET(nfsstatsv1_p)->srvclients;
658 nfsstatsov1.srvopenowners =
659 NFSD_VNET(nfsstatsv1_p)->srvopenowners;
660 nfsstatsov1.srvopens =
661 NFSD_VNET(nfsstatsv1_p)->srvopens;
662 nfsstatsov1.srvlockowners =
663 NFSD_VNET(nfsstatsv1_p)->srvlockowners;
664 nfsstatsov1.srvlocks =
665 NFSD_VNET(nfsstatsv1_p)->srvlocks;
666 nfsstatsov1.srvdelegates =
667 NFSD_VNET(nfsstatsv1_p)->srvdelegates;
668 for (i = 0; i < NFSV42_CBNOPS; i++)
669 nfsstatsov1.cbrpccnt[i] =
670 NFSD_VNET(nfsstatsv1_p)->cbrpccnt[i];
671 nfsstatsov1.clopenowners =
672 NFSD_VNET(nfsstatsv1_p)->clopenowners;
673 nfsstatsov1.clopens =
674 NFSD_VNET(nfsstatsv1_p)->clopens;
675 nfsstatsov1.cllockowners =
676 NFSD_VNET(nfsstatsv1_p)->cllockowners;
677 nfsstatsov1.cllocks =
678 NFSD_VNET(nfsstatsv1_p)->cllocks;
679 nfsstatsov1.cldelegates =
680 NFSD_VNET(nfsstatsv1_p)->cldelegates;
681 nfsstatsov1.cllocalopenowners =
682 NFSD_VNET(nfsstatsv1_p)->cllocalopenowners;
683 nfsstatsov1.cllocalopens =
684 NFSD_VNET(nfsstatsv1_p)->cllocalopens;
685 nfsstatsov1.cllocallockowners =
686 NFSD_VNET(nfsstatsv1_p)->cllocallockowners;
687 nfsstatsov1.cllocallocks =
688 NFSD_VNET(nfsstatsv1_p)->cllocallocks;
689 nfsstatsov1.srvstartcnt =
690 NFSD_VNET(nfsstatsv1_p)->srvstartcnt;
691 nfsstatsov1.srvdonecnt =
692 NFSD_VNET(nfsstatsv1_p)->srvdonecnt;
693 for (i = NFSV42_NOPS,
694 j = NFSV42_PURENOPS;
695 i < NFSV42_NOPS + NFSV4OP_FAKENOPS;
696 i++, j++) {
697 nfsstatsov1.srvbytes[j] =
698 NFSD_VNET(nfsstatsv1_p)->srvbytes[i];
699 nfsstatsov1.srvops[j] =
700 NFSD_VNET(nfsstatsv1_p)->srvops[i];
701 nfsstatsov1.srvduration[j] =
702 NFSD_VNET(nfsstatsv1_p)->srvduration[i];
703 }
704 nfsstatsov1.busyfrom =
705 NFSD_VNET(nfsstatsv1_p)->busyfrom;
706 nfsstatsov1.busyfrom =
707 NFSD_VNET(nfsstatsv1_p)->busyfrom;
708 error = copyout(&nfsstatsov1, uap->argp,
709 sizeof(nfsstatsov1));
710 } else if (nfsstatver.vers != NFSSTATS_V1)
711 error = EPERM;
712 else
713 error = copyout(NFSD_VNET(nfsstatsv1_p),
714 uap->argp, sizeof(nfsstatsv1));
715 }
716 }
717 if (error == 0) {
718 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) {
719 NFSD_VNET(nfsstatsv1_p)->attrcache_hits = 0;
720 NFSD_VNET(nfsstatsv1_p)->attrcache_misses = 0;
721 NFSD_VNET(nfsstatsv1_p)->lookupcache_hits = 0;
722 NFSD_VNET(nfsstatsv1_p)->lookupcache_misses = 0;
723 NFSD_VNET(nfsstatsv1_p)->direofcache_hits = 0;
724 NFSD_VNET(nfsstatsv1_p)->direofcache_misses = 0;
725 NFSD_VNET(nfsstatsv1_p)->accesscache_hits = 0;
726 NFSD_VNET(nfsstatsv1_p)->accesscache_misses = 0;
727 NFSD_VNET(nfsstatsv1_p)->biocache_reads = 0;
728 NFSD_VNET(nfsstatsv1_p)->read_bios = 0;
729 NFSD_VNET(nfsstatsv1_p)->read_physios = 0;
730 NFSD_VNET(nfsstatsv1_p)->biocache_writes = 0;
731 NFSD_VNET(nfsstatsv1_p)->write_bios = 0;
732 NFSD_VNET(nfsstatsv1_p)->write_physios = 0;
733 NFSD_VNET(nfsstatsv1_p)->biocache_readlinks = 0;
734 NFSD_VNET(nfsstatsv1_p)->readlink_bios = 0;
735 NFSD_VNET(nfsstatsv1_p)->biocache_readdirs = 0;
736 NFSD_VNET(nfsstatsv1_p)->readdir_bios = 0;
737 NFSD_VNET(nfsstatsv1_p)->rpcretries = 0;
738 NFSD_VNET(nfsstatsv1_p)->rpcrequests = 0;
739 NFSD_VNET(nfsstatsv1_p)->rpctimeouts = 0;
740 NFSD_VNET(nfsstatsv1_p)->rpcunexpected = 0;
741 NFSD_VNET(nfsstatsv1_p)->rpcinvalid = 0;
742 bzero(NFSD_VNET(nfsstatsv1_p)->rpccnt,
743 sizeof(NFSD_VNET(nfsstatsv1_p)->rpccnt));
744 }
745 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) {
746 NFSD_VNET(nfsstatsv1_p)->srvcache_inproghits = 0;
747 NFSD_VNET(nfsstatsv1_p)->srvcache_nonidemdonehits = 0;
748 NFSD_VNET(nfsstatsv1_p)->srvcache_misses = 0;
749 NFSD_VNET(nfsstatsv1_p)->srvcache_tcppeak = 0;
750 bzero(NFSD_VNET(nfsstatsv1_p)->srvrpccnt,
751 sizeof(NFSD_VNET(nfsstatsv1_p)->srvrpccnt));
752 bzero(NFSD_VNET(nfsstatsv1_p)->cbrpccnt,
753 sizeof(NFSD_VNET(nfsstatsv1_p)->cbrpccnt));
754 }
755 }
756 goto out;
757 } else if (uap->flag & NFSSVC_NFSUSERDPORT) {
758 u_short sockport;
759 struct nfsuserd_args nargs;
760
761 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
762 error = copyin(uap->argp, (caddr_t)&sockport,
763 sizeof (u_short));
764 if (error == 0) {
765 nargs.nuserd_family = AF_INET;
766 nargs.nuserd_port = sockport;
767 }
768 } else {
769 /*
770 * New nfsuserd_args structure, which indicates
771 * which IP version to use along with the port#.
772 */
773 error = copyin(uap->argp, &nargs, sizeof(nargs));
774 }
775 if (!error)
776 error = nfsrv_nfsuserdport(&nargs, p);
777 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) {
778 nfsrv_nfsuserddelport();
779 error = 0;
780 }
781
782 out:
783 NFSEXITCODE(error);
784 return (error);
785 }
786
787 /*
788 * called by all three modevent routines, so that it gets things
789 * initialized soon enough.
790 */
791 void
newnfs_portinit(void)792 newnfs_portinit(void)
793 {
794 static int inited = 0;
795
796 if (inited)
797 return;
798 inited = 1;
799 /* Initialize SMP locks used by both client and server. */
800 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF);
801 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF);
802 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL, MTX_DEF);
803 }
804
805 /*
806 * Determine if the file system supports NFSv4 ACLs.
807 * Return 1 if it does, 0 otherwise.
808 */
809 int
nfs_supportsnfsv4acls(struct vnode * vp)810 nfs_supportsnfsv4acls(struct vnode *vp)
811 {
812 int error;
813 long retval;
814
815 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls");
816
817 if (nfsrv_useacl == 0)
818 return (0);
819 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval);
820 if (error == 0 && retval != 0)
821 return (1);
822 return (0);
823 }
824
825 /*
826 * These are the first fields of all the context structures passed into
827 * nfs_pnfsio().
828 */
829 struct pnfsio {
830 int done;
831 int inprog;
832 struct task tsk;
833 };
834
835 /*
836 * Do a mirror I/O on a pNFS thread.
837 */
838 int
nfs_pnfsio(task_fn_t * func,void * context)839 nfs_pnfsio(task_fn_t *func, void *context)
840 {
841 struct pnfsio *pio;
842 int ret;
843 static struct taskqueue *pnfsioq = NULL;
844
845 pio = (struct pnfsio *)context;
846 if (pnfsioq == NULL) {
847 if (nfs_pnfsiothreads == 0)
848 return (EPERM);
849 if (nfs_pnfsiothreads < 0)
850 nfs_pnfsiothreads = mp_ncpus * 4;
851 pnfsioq = taskqueue_create("pnfsioq", M_WAITOK,
852 taskqueue_thread_enqueue, &pnfsioq);
853 if (pnfsioq == NULL)
854 return (ENOMEM);
855 ret = taskqueue_start_threads(&pnfsioq, nfs_pnfsiothreads,
856 0, "pnfsiot");
857 if (ret != 0) {
858 taskqueue_free(pnfsioq);
859 pnfsioq = NULL;
860 return (ret);
861 }
862 }
863 pio->inprog = 1;
864 TASK_INIT(&pio->tsk, 0, func, context);
865 ret = taskqueue_enqueue(pnfsioq, &pio->tsk);
866 if (ret != 0)
867 pio->inprog = 0;
868 return (ret);
869 }
870
871 /*
872 * Initialize everything that needs to be initialized for a vnet.
873 */
874 static void
nfs_vnetinit(const void * unused __unused)875 nfs_vnetinit(const void *unused __unused)
876 {
877
878 if (IS_DEFAULT_VNET(curvnet))
879 NFSD_VNET(nfsstatsv1_p) = &nfsstatsv1;
880 else
881 NFSD_VNET(nfsstatsv1_p) = malloc(sizeof(struct nfsstatsv1),
882 M_TEMP, M_WAITOK | M_ZERO);
883 mtx_init(&NFSD_VNET(nfsrv_nfsuserdsock).nr_mtx, "nfsuserd",
884 NULL, MTX_DEF);
885 }
886 VNET_SYSINIT(nfs_vnetinit, SI_SUB_VNET_DONE, SI_ORDER_FIRST,
887 nfs_vnetinit, NULL);
888
889 static void
nfs_cleanup(void * unused __unused)890 nfs_cleanup(void *unused __unused)
891 {
892
893 mtx_destroy(&NFSD_VNET(nfsrv_nfsuserdsock).nr_mtx);
894 if (!IS_DEFAULT_VNET(curvnet)) {
895 free(NFSD_VNET(nfsstatsv1_p), M_TEMP);
896 NFSD_VNET(nfsstatsv1_p) = NULL;
897 }
898 /* Clean out the name<-->id cache. */
899 nfsrv_cleanusergroup();
900 }
901 VNET_SYSUNINIT(nfs_cleanup, SI_SUB_VNET_DONE, SI_ORDER_FIRST,
902 nfs_cleanup, NULL);
903
904 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *);
905
906 /*
907 * Called once to initialize data structures...
908 */
909 static int
nfscommon_modevent(module_t mod,int type,void * data)910 nfscommon_modevent(module_t mod, int type, void *data)
911 {
912 int error = 0;
913 static int loaded = 0;
914
915 switch (type) {
916 case MOD_LOAD:
917 if (loaded)
918 goto out;
919 newnfs_portinit();
920 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF);
921 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF);
922 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF);
923 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF);
924 mtx_init(&nfsrv_dslock_mtx, "nfs4ds", NULL, MTX_DEF);
925 TAILQ_INIT(&nfsrv_devidhead);
926 newnfs_init();
927 nfsd_call_nfscommon = nfssvc_nfscommon;
928 loaded = 1;
929 break;
930
931 case MOD_UNLOAD:
932 if (newnfs_numnfsd != 0 ||
933 NFSD_VNET(nfsrv_nfsuserd) != NOTRUNNING ||
934 nfs_numnfscbd != 0) {
935 error = EBUSY;
936 break;
937 }
938
939 nfsd_call_nfscommon = NULL;
940 /* and get rid of the mutexes */
941 mtx_destroy(&nfs_nameid_mutex);
942 mtx_destroy(&newnfsd_mtx);
943 mtx_destroy(&nfs_state_mutex);
944 mtx_destroy(&nfs_clstate_mutex);
945 mtx_destroy(&nfs_sockl_mutex);
946 mtx_destroy(&nfs_slock_mutex);
947 mtx_destroy(&nfs_req_mutex);
948 mtx_destroy(&nfsrv_dslock_mtx);
949 loaded = 0;
950 break;
951 default:
952 error = EOPNOTSUPP;
953 break;
954 }
955
956 out:
957 NFSEXITCODE(error);
958 return error;
959 }
960 static moduledata_t nfscommon_mod = {
961 "nfscommon",
962 nfscommon_modevent,
963 NULL,
964 };
965 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY);
966
967 /* So that loader and kldload(2) can find us, wherever we are.. */
968 MODULE_VERSION(nfscommon, 1);
969 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1);
970 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);
971