1 /* $NetBSD: nfs_commonport.c,v 1.2 2016/12/13 22:31:51 pgoyette Exp $ */
2 /*-
3 * Copyright (c) 1989, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Rick Macklem at The University of Guelph.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 */
34
35 #include <sys/cdefs.h>
36 /* __FBSDID("FreeBSD: head/sys/fs/nfs/nfs_commonport.c 304026 2016-08-12 22:44:59Z rmacklem "); */
37 __RCSID("$NetBSD: nfs_commonport.c,v 1.2 2016/12/13 22:31:51 pgoyette Exp $");
38
39 /*
40 * Functions that need to be different for different versions of BSD
41 * kernel should be kept here, along with any global storage specific
42 * to this BSD variant.
43 */
44 #include <fs/nfs/common/nfsport.h>
45 #include <sys/sysctl.h>
46 #include <vm/vm.h>
47 #include <vm/vm_object.h>
48 #include <vm/vm_page.h>
49 #include <vm/vm_param.h>
50 #include <vm/vm_map.h>
51 #include <vm/vm_kern.h>
52 #include <vm/vm_extern.h>
53 #include <vm/uma.h>
54
55 extern int nfscl_ticks;
56 extern int nfsrv_nfsuserd;
57 extern struct nfssockreq nfsrv_nfsuserdsock;
58 extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *,
59 struct thread *);
60 extern int nfsrv_useacl;
61 struct mount nfsv4root_mnt;
62 int newnfs_numnfsd = 0;
63 struct nfsstatsv1 nfsstatsv1;
64 int nfs_numnfscbd = 0;
65 int nfscl_debuglevel = 0;
66 char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
67 struct callout newnfsd_callout;
68 int nfsrv_lughashsize = 100;
69 void (*nfsd_call_servertimer)(void) = NULL;
70 void (*ncl_call_invalcaches)(struct vnode *) = NULL;
71
72 static int nfs_realign_test;
73 static int nfs_realign_count;
74 static struct ext_nfsstats oldnfsstats;
75
76 SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "NFS filesystem");
77 SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test,
78 0, "Number of realign tests done");
79 SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count,
80 0, "Number of mbuf realignments done");
81 SYSCTL_STRING(_vfs_nfs, OID_AUTO, callback_addr, CTLFLAG_RW,
82 nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr),
83 "NFSv4 callback addr for server to use");
84 SYSCTL_INT(_vfs_nfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nfscl_debuglevel,
85 0, "Debug level for NFS client");
86 SYSCTL_INT(_vfs_nfs, OID_AUTO, userhashsize, CTLFLAG_RDTUN, &nfsrv_lughashsize,
87 0, "Size of hash tables for uid/name mapping");
88
89 /*
90 * Defines for malloc
91 * (Here for FreeBSD, since they allocate storage.)
92 */
93 MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache");
94 MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id");
95 MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state",
96 "NFSD V4 State (Openowner, Open, Lockowner, Delegation");
97 MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock");
98 MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file");
99 MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string");
100 MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map");
101 MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header");
102 MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle");
103 MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner");
104 MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open");
105 MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation");
106 MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client");
107 MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner");
108 MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock");
109 MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "NFS vnode");
110 MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "NFS Direct IO buffer");
111 MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff",
112 "NFS directory offset data");
113 MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback",
114 "NFS local lock rollback");
115 MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout");
116 MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout");
117 MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info");
118 MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req");
119 MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session");
120 MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall");
121 MALLOC_DEFINE(M_NEWNFSDSESSION, "NFSD session", "NFSD Session for a client");
122
123 /*
124 * Definition of mutex locks.
125 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list
126 * and assorted other nfsd structures.
127 */
128 struct mtx newnfsd_mtx;
129 struct mtx nfs_sockl_mutex;
130 struct mtx nfs_state_mutex;
131 struct mtx nfs_nameid_mutex;
132 struct mtx nfs_req_mutex;
133 struct mtx nfs_slock_mutex;
134
135 /* local functions */
136 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *);
137
138 #ifdef __NO_STRICT_ALIGNMENT
139 /*
140 * These architectures don't need re-alignment, so just return.
141 */
142 int
newnfs_realign(struct mbuf ** pm,int how)143 newnfs_realign(struct mbuf **pm, int how)
144 {
145
146 return (0);
147 }
148 #else /* !__NO_STRICT_ALIGNMENT */
149 /*
150 * newnfs_realign:
151 *
152 * Check for badly aligned mbuf data and realign by copying the unaligned
153 * portion of the data into a new mbuf chain and freeing the portions
154 * of the old chain that were replaced.
155 *
156 * We cannot simply realign the data within the existing mbuf chain
157 * because the underlying buffers may contain other rpc commands and
158 * we cannot afford to overwrite them.
159 *
160 * We would prefer to avoid this situation entirely. The situation does
161 * not occur with NFS/UDP and is supposed to only occasionally occur
162 * with TCP. Use vfs.nfs.realign_count and realign_test to check this.
163 *
164 */
165 int
newnfs_realign(struct mbuf ** pm,int how)166 newnfs_realign(struct mbuf **pm, int how)
167 {
168 struct mbuf *m, *n;
169 int off, space;
170
171 ++nfs_realign_test;
172 while ((m = *pm) != NULL) {
173 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) {
174 /*
175 * NB: we can't depend on m_pkthdr.len to help us
176 * decide what to do here. May not be worth doing
177 * the m_length calculation as m_copyback will
178 * expand the mbuf chain below as needed.
179 */
180 space = m_length(m, NULL);
181 if (space >= MINCLSIZE) {
182 /* NB: m_copyback handles space > MCLBYTES */
183 n = m_getcl(how, MT_DATA, 0);
184 } else
185 n = m_get(how, MT_DATA);
186 if (n == NULL)
187 return (ENOMEM);
188 /*
189 * Align the remainder of the mbuf chain.
190 */
191 n->m_len = 0;
192 off = 0;
193 while (m != NULL) {
194 m_copyback(n, off, m->m_len, mtod(m, caddr_t));
195 off += m->m_len;
196 m = m->m_next;
197 }
198 m_freem(*pm);
199 *pm = n;
200 ++nfs_realign_count;
201 break;
202 }
203 pm = &m->m_next;
204 }
205
206 return (0);
207 }
208 #endif /* __NO_STRICT_ALIGNMENT */
209
210 #ifdef notdef
211 static void
nfsrv_object_create(struct vnode * vp,struct thread * td)212 nfsrv_object_create(struct vnode *vp, struct thread *td)
213 {
214
215 if (vp == NULL || vp->v_type != VREG)
216 return;
217 (void) vfs_object_create(vp, td, td->td_ucred);
218 }
219 #endif
220
221 /*
222 * Look up a file name. Basically just initialize stuff and call namei().
223 */
224 int
nfsrv_lookupfilename(struct nameidata * ndp,char * fname,NFSPROC_T * p)225 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p)
226 {
227 int error;
228
229 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname,
230 p);
231 error = namei(ndp);
232 if (!error) {
233 NDFREE(ndp, NDF_ONLY_PNBUF);
234 }
235 return (error);
236 }
237
238 /*
239 * Copy NFS uid, gids to the cred structure.
240 */
241 void
newnfs_copycred(struct nfscred * nfscr,struct ucred * cr)242 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr)
243 {
244
245 KASSERT(nfscr->nfsc_ngroups >= 0,
246 ("newnfs_copycred: negative nfsc_ngroups"));
247 cr->cr_uid = nfscr->nfsc_uid;
248 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups);
249 }
250
251 /*
252 * Map args from nfsmsleep() to msleep().
253 */
254 int
nfsmsleep(void * chan,void * mutex,int prio,const char * wmesg,struct timespec * ts)255 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg,
256 struct timespec *ts)
257 {
258 u_int64_t nsecval;
259 int error, timeo;
260
261 if (ts) {
262 timeo = hz * ts->tv_sec;
263 nsecval = (u_int64_t)ts->tv_nsec;
264 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) /
265 1000000000;
266 timeo += (int)nsecval;
267 } else {
268 timeo = 0;
269 }
270 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo);
271 return (error);
272 }
273
274 /*
275 * Get the file system info for the server. For now, just assume FFS.
276 */
277 void
nfsvno_getfs(struct nfsfsinfo * sip,int isdgram)278 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram)
279 {
280 int pref;
281
282 /*
283 * XXX
284 * There should be file system VFS OP(s) to get this information.
285 * For now, assume ufs.
286 */
287 if (isdgram)
288 pref = NFS_MAXDGRAMDATA;
289 else
290 pref = NFS_SRVMAXIO;
291 sip->fs_rtmax = NFS_SRVMAXIO;
292 sip->fs_rtpref = pref;
293 sip->fs_rtmult = NFS_FABLKSIZE;
294 sip->fs_wtmax = NFS_SRVMAXIO;
295 sip->fs_wtpref = pref;
296 sip->fs_wtmult = NFS_FABLKSIZE;
297 sip->fs_dtpref = pref;
298 sip->fs_maxfilesize = 0xffffffffffffffffull;
299 sip->fs_timedelta.tv_sec = 0;
300 sip->fs_timedelta.tv_nsec = 1;
301 sip->fs_properties = (NFSV3FSINFO_LINK |
302 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
303 NFSV3FSINFO_CANSETTIME);
304 }
305
306 /*
307 * Do the pathconf vnode op.
308 */
309 int
nfsvno_pathconf(struct vnode * vp,int flag,register_t * retf,struct ucred * cred,struct thread * p)310 nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf,
311 struct ucred *cred, struct thread *p)
312 {
313 int error;
314
315 error = VOP_PATHCONF(vp, flag, retf);
316 if (error == EOPNOTSUPP || error == EINVAL) {
317 /*
318 * Some file systems return EINVAL for name arguments not
319 * supported and some return EOPNOTSUPP for this case.
320 * So the NFSv3 Pathconf RPC doesn't fail for these cases,
321 * just fake them.
322 */
323 switch (flag) {
324 case _PC_LINK_MAX:
325 *retf = LINK_MAX;
326 break;
327 case _PC_NAME_MAX:
328 *retf = NAME_MAX;
329 break;
330 case _PC_CHOWN_RESTRICTED:
331 *retf = 1;
332 break;
333 case _PC_NO_TRUNC:
334 *retf = 1;
335 break;
336 default:
337 /*
338 * Only happens if a _PC_xxx is added to the server,
339 * but this isn't updated.
340 */
341 *retf = 0;
342 printf("nfsrvd pathconf flag=%d not supp\n", flag);
343 }
344 error = 0;
345 }
346 NFSEXITCODE(error);
347 return (error);
348 }
349
350 /* Fake nfsrv_atroot. Just return 0 */
351 int
nfsrv_atroot(struct vnode * vp,long * retp)352 nfsrv_atroot(struct vnode *vp, long *retp)
353 {
354
355 return (0);
356 }
357
358 /*
359 * Set the credentials to refer to root.
360 * If only the various BSDen could agree on whether cr_gid is a separate
361 * field or cr_groups[0]...
362 */
363 void
newnfs_setroot(struct ucred * cred)364 newnfs_setroot(struct ucred *cred)
365 {
366
367 cred->cr_uid = 0;
368 cred->cr_groups[0] = 0;
369 cred->cr_ngroups = 1;
370 }
371
372 /*
373 * Get the client credential. Used for Renew and recovery.
374 */
375 struct ucred *
newnfs_getcred(void)376 newnfs_getcred(void)
377 {
378 struct ucred *cred;
379 struct thread *td = curthread;
380
381 cred = crdup(td->td_ucred);
382 newnfs_setroot(cred);
383 return (cred);
384 }
385
386 /*
387 * Nfs timer routine
388 * Call the nfsd's timer function once/sec.
389 */
390 void
newnfs_timer(void * arg)391 newnfs_timer(void *arg)
392 {
393 static time_t lasttime = 0;
394 /*
395 * Call the server timer, if set up.
396 * The argument indicates if it is the next second and therefore
397 * leases should be checked.
398 */
399 if (lasttime != NFSD_MONOSEC) {
400 lasttime = NFSD_MONOSEC;
401 if (nfsd_call_servertimer != NULL)
402 (*nfsd_call_servertimer)();
403 }
404 callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL);
405 }
406
407
408 /*
409 * Sleep for a short period of time unless errval == NFSERR_GRACE, where
410 * the sleep should be for 5 seconds.
411 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on
412 * an event that never gets a wakeup. Only return EINTR or 0.
413 */
414 int
nfs_catnap(int prio,int errval,const char * wmesg)415 nfs_catnap(int prio, int errval, const char *wmesg)
416 {
417 static int non_event;
418 int ret;
419
420 if (errval == NFSERR_GRACE)
421 ret = tsleep(&non_event, prio, wmesg, 5 * hz);
422 else
423 ret = tsleep(&non_event, prio, wmesg, 1);
424 if (ret != EINTR)
425 ret = 0;
426 return (ret);
427 }
428
429 /*
430 * Get referral. For now, just fail.
431 */
432 struct nfsreferral *
nfsv4root_getreferral(struct vnode * vp,struct vnode * dvp,u_int32_t fileno)433 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno)
434 {
435
436 return (NULL);
437 }
438
439 static int
nfssvc_nfscommon(struct thread * td,struct nfssvc_args * uap)440 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap)
441 {
442 int error;
443
444 error = nfssvc_call(td, uap, td->td_ucred);
445 NFSEXITCODE(error);
446 return (error);
447 }
448
449 static int
nfssvc_call(struct thread * p,struct nfssvc_args * uap,struct ucred * cred)450 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
451 {
452 int error = EINVAL, i, j;
453 struct nfsd_idargs nid;
454 struct nfsd_oidargs onid;
455 struct {
456 int vers; /* Just the first field of nfsstats. */
457 } nfsstatver;
458
459 if (uap->flag & NFSSVC_IDNAME) {
460 if ((uap->flag & NFSSVC_NEWSTRUCT) != 0)
461 error = copyin(uap->argp, &nid, sizeof(nid));
462 else {
463 error = copyin(uap->argp, &onid, sizeof(onid));
464 if (error == 0) {
465 nid.nid_flag = onid.nid_flag;
466 nid.nid_uid = onid.nid_uid;
467 nid.nid_gid = onid.nid_gid;
468 nid.nid_usermax = onid.nid_usermax;
469 nid.nid_usertimeout = onid.nid_usertimeout;
470 nid.nid_name = onid.nid_name;
471 nid.nid_namelen = onid.nid_namelen;
472 nid.nid_ngroup = 0;
473 nid.nid_grps = NULL;
474 }
475 }
476 if (error)
477 goto out;
478 error = nfssvc_idname(&nid);
479 goto out;
480 } else if (uap->flag & NFSSVC_GETSTATS) {
481 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
482 /* Copy fields to the old ext_nfsstat structure. */
483 oldnfsstats.attrcache_hits =
484 nfsstatsv1.attrcache_hits;
485 oldnfsstats.attrcache_misses =
486 nfsstatsv1.attrcache_misses;
487 oldnfsstats.lookupcache_hits =
488 nfsstatsv1.lookupcache_hits;
489 oldnfsstats.lookupcache_misses =
490 nfsstatsv1.lookupcache_misses;
491 oldnfsstats.direofcache_hits =
492 nfsstatsv1.direofcache_hits;
493 oldnfsstats.direofcache_misses =
494 nfsstatsv1.direofcache_misses;
495 oldnfsstats.accesscache_hits =
496 nfsstatsv1.accesscache_hits;
497 oldnfsstats.accesscache_misses =
498 nfsstatsv1.accesscache_misses;
499 oldnfsstats.biocache_reads =
500 nfsstatsv1.biocache_reads;
501 oldnfsstats.read_bios =
502 nfsstatsv1.read_bios;
503 oldnfsstats.read_physios =
504 nfsstatsv1.read_physios;
505 oldnfsstats.biocache_writes =
506 nfsstatsv1.biocache_writes;
507 oldnfsstats.write_bios =
508 nfsstatsv1.write_bios;
509 oldnfsstats.write_physios =
510 nfsstatsv1.write_physios;
511 oldnfsstats.biocache_readlinks =
512 nfsstatsv1.biocache_readlinks;
513 oldnfsstats.readlink_bios =
514 nfsstatsv1.readlink_bios;
515 oldnfsstats.biocache_readdirs =
516 nfsstatsv1.biocache_readdirs;
517 oldnfsstats.readdir_bios =
518 nfsstatsv1.readdir_bios;
519 for (i = 0; i < NFSV4_NPROCS; i++)
520 oldnfsstats.rpccnt[i] = nfsstatsv1.rpccnt[i];
521 oldnfsstats.rpcretries = nfsstatsv1.rpcretries;
522 for (i = 0; i < NFSV4OP_NOPS; i++)
523 oldnfsstats.srvrpccnt[i] =
524 nfsstatsv1.srvrpccnt[i];
525 for (i = NFSV42_NOPS, j = NFSV4OP_NOPS;
526 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++)
527 oldnfsstats.srvrpccnt[j] =
528 nfsstatsv1.srvrpccnt[i];
529 oldnfsstats.srvrpc_errs = nfsstatsv1.srvrpc_errs;
530 oldnfsstats.srv_errs = nfsstatsv1.srv_errs;
531 oldnfsstats.rpcrequests = nfsstatsv1.rpcrequests;
532 oldnfsstats.rpctimeouts = nfsstatsv1.rpctimeouts;
533 oldnfsstats.rpcunexpected = nfsstatsv1.rpcunexpected;
534 oldnfsstats.rpcinvalid = nfsstatsv1.rpcinvalid;
535 oldnfsstats.srvcache_inproghits =
536 nfsstatsv1.srvcache_inproghits;
537 oldnfsstats.srvcache_idemdonehits =
538 nfsstatsv1.srvcache_idemdonehits;
539 oldnfsstats.srvcache_nonidemdonehits =
540 nfsstatsv1.srvcache_nonidemdonehits;
541 oldnfsstats.srvcache_misses =
542 nfsstatsv1.srvcache_misses;
543 oldnfsstats.srvcache_tcppeak =
544 nfsstatsv1.srvcache_tcppeak;
545 oldnfsstats.srvcache_size = nfsstatsv1.srvcache_size;
546 oldnfsstats.srvclients = nfsstatsv1.srvclients;
547 oldnfsstats.srvopenowners = nfsstatsv1.srvopenowners;
548 oldnfsstats.srvopens = nfsstatsv1.srvopens;
549 oldnfsstats.srvlockowners = nfsstatsv1.srvlockowners;
550 oldnfsstats.srvlocks = nfsstatsv1.srvlocks;
551 oldnfsstats.srvdelegates = nfsstatsv1.srvdelegates;
552 for (i = 0; i < NFSV4OP_CBNOPS; i++)
553 oldnfsstats.cbrpccnt[i] =
554 nfsstatsv1.cbrpccnt[i];
555 oldnfsstats.clopenowners = nfsstatsv1.clopenowners;
556 oldnfsstats.clopens = nfsstatsv1.clopens;
557 oldnfsstats.cllockowners = nfsstatsv1.cllockowners;
558 oldnfsstats.cllocks = nfsstatsv1.cllocks;
559 oldnfsstats.cldelegates = nfsstatsv1.cldelegates;
560 oldnfsstats.cllocalopenowners =
561 nfsstatsv1.cllocalopenowners;
562 oldnfsstats.cllocalopens = nfsstatsv1.cllocalopens;
563 oldnfsstats.cllocallockowners =
564 nfsstatsv1.cllocallockowners;
565 oldnfsstats.cllocallocks = nfsstatsv1.cllocallocks;
566 error = copyout(&oldnfsstats, uap->argp,
567 sizeof (oldnfsstats));
568 } else {
569 error = copyin(uap->argp, &nfsstatver,
570 sizeof(nfsstatver));
571 if (error == 0 && nfsstatver.vers != NFSSTATS_V1)
572 error = EPERM;
573 if (error == 0)
574 error = copyout(&nfsstatsv1, uap->argp,
575 sizeof (nfsstatsv1));
576 }
577 if (error == 0) {
578 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) {
579 nfsstatsv1.attrcache_hits = 0;
580 nfsstatsv1.attrcache_misses = 0;
581 nfsstatsv1.lookupcache_hits = 0;
582 nfsstatsv1.lookupcache_misses = 0;
583 nfsstatsv1.direofcache_hits = 0;
584 nfsstatsv1.direofcache_misses = 0;
585 nfsstatsv1.accesscache_hits = 0;
586 nfsstatsv1.accesscache_misses = 0;
587 nfsstatsv1.biocache_reads = 0;
588 nfsstatsv1.read_bios = 0;
589 nfsstatsv1.read_physios = 0;
590 nfsstatsv1.biocache_writes = 0;
591 nfsstatsv1.write_bios = 0;
592 nfsstatsv1.write_physios = 0;
593 nfsstatsv1.biocache_readlinks = 0;
594 nfsstatsv1.readlink_bios = 0;
595 nfsstatsv1.biocache_readdirs = 0;
596 nfsstatsv1.readdir_bios = 0;
597 nfsstatsv1.rpcretries = 0;
598 nfsstatsv1.rpcrequests = 0;
599 nfsstatsv1.rpctimeouts = 0;
600 nfsstatsv1.rpcunexpected = 0;
601 nfsstatsv1.rpcinvalid = 0;
602 bzero(nfsstatsv1.rpccnt,
603 sizeof(nfsstatsv1.rpccnt));
604 }
605 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) {
606 nfsstatsv1.srvrpc_errs = 0;
607 nfsstatsv1.srv_errs = 0;
608 nfsstatsv1.srvcache_inproghits = 0;
609 nfsstatsv1.srvcache_idemdonehits = 0;
610 nfsstatsv1.srvcache_nonidemdonehits = 0;
611 nfsstatsv1.srvcache_misses = 0;
612 nfsstatsv1.srvcache_tcppeak = 0;
613 nfsstatsv1.srvclients = 0;
614 nfsstatsv1.srvopenowners = 0;
615 nfsstatsv1.srvopens = 0;
616 nfsstatsv1.srvlockowners = 0;
617 nfsstatsv1.srvlocks = 0;
618 nfsstatsv1.srvdelegates = 0;
619 nfsstatsv1.clopenowners = 0;
620 nfsstatsv1.clopens = 0;
621 nfsstatsv1.cllockowners = 0;
622 nfsstatsv1.cllocks = 0;
623 nfsstatsv1.cldelegates = 0;
624 nfsstatsv1.cllocalopenowners = 0;
625 nfsstatsv1.cllocalopens = 0;
626 nfsstatsv1.cllocallockowners = 0;
627 nfsstatsv1.cllocallocks = 0;
628 bzero(nfsstatsv1.srvrpccnt,
629 sizeof(nfsstatsv1.srvrpccnt));
630 bzero(nfsstatsv1.cbrpccnt,
631 sizeof(nfsstatsv1.cbrpccnt));
632 }
633 }
634 goto out;
635 } else if (uap->flag & NFSSVC_NFSUSERDPORT) {
636 u_short sockport;
637
638 error = copyin(uap->argp, (caddr_t)&sockport,
639 sizeof (u_short));
640 if (!error)
641 error = nfsrv_nfsuserdport(sockport, p);
642 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) {
643 nfsrv_nfsuserddelport();
644 error = 0;
645 }
646
647 out:
648 NFSEXITCODE(error);
649 return (error);
650 }
651
652 /*
653 * called by all three modevent routines, so that it gets things
654 * initialized soon enough.
655 */
656 void
newnfs_portinit(void)657 newnfs_portinit(void)
658 {
659 static int inited = 0;
660
661 if (inited)
662 return;
663 inited = 1;
664 /* Initialize SMP locks used by both client and server. */
665 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF);
666 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF);
667 }
668
669 /*
670 * Determine if the file system supports NFSv4 ACLs.
671 * Return 1 if it does, 0 otherwise.
672 */
673 int
nfs_supportsnfsv4acls(struct vnode * vp)674 nfs_supportsnfsv4acls(struct vnode *vp)
675 {
676 int error;
677 register_t retval;
678
679 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls");
680
681 if (nfsrv_useacl == 0)
682 return (0);
683 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval);
684 if (error == 0 && retval != 0)
685 return (1);
686 return (0);
687 }
688
689 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *);
690
691 /*
692 * Called once to initialize data structures...
693 */
694 static int
nfscommon_modevent(module_t mod,int type,void * data)695 nfscommon_modevent(module_t mod, int type, void *data)
696 {
697 int error = 0;
698 static int loaded = 0;
699
700 switch (type) {
701 case MOD_LOAD:
702 if (loaded)
703 goto out;
704 newnfs_portinit();
705 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF);
706 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF);
707 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF);
708 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF);
709 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL,
710 MTX_DEF);
711 callout_init(&newnfsd_callout, 1);
712 newnfs_init();
713 nfsd_call_nfscommon = nfssvc_nfscommon;
714 loaded = 1;
715 break;
716
717 case MOD_UNLOAD:
718 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 ||
719 nfs_numnfscbd != 0) {
720 error = EBUSY;
721 break;
722 }
723
724 nfsd_call_nfscommon = NULL;
725 callout_drain(&newnfsd_callout);
726 /* Clean out the name<-->id cache. */
727 nfsrv_cleanusergroup();
728 /* and get rid of the mutexes */
729 mtx_destroy(&nfs_nameid_mutex);
730 mtx_destroy(&newnfsd_mtx);
731 mtx_destroy(&nfs_state_mutex);
732 mtx_destroy(&nfs_sockl_mutex);
733 mtx_destroy(&nfs_slock_mutex);
734 mtx_destroy(&nfs_req_mutex);
735 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx);
736 loaded = 0;
737 break;
738 default:
739 error = EOPNOTSUPP;
740 break;
741 }
742
743 out:
744 NFSEXITCODE(error);
745 return error;
746 }
747 static moduledata_t nfscommon_mod = {
748 "nfscommon",
749 nfscommon_modevent,
750 NULL,
751 };
752 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY);
753
754 /* So that loader and kldload(2) can find us, wherever we are.. */
755 MODULE_VERSION(nfscommon, 1);
756 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1);
757 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);
758
759