nfs_commonport.c revision 306609
1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD: stable/11/sys/fs/nfs/nfs_commonport.c 306609 2016-10-03 00:10:14Z rmacklem $"); 36 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/sysctl.h> 44#include <vm/vm.h> 45#include <vm/vm_object.h> 46#include <vm/vm_page.h> 47#include <vm/vm_param.h> 48#include <vm/vm_map.h> 49#include <vm/vm_kern.h> 50#include <vm/vm_extern.h> 51#include <vm/uma.h> 52 53extern int nfscl_ticks; 54extern int nfsrv_nfsuserd; 55extern struct nfssockreq nfsrv_nfsuserdsock; 56extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *, 57 struct thread *); 58extern int nfsrv_useacl; 59struct mount nfsv4root_mnt; 60int newnfs_numnfsd = 0; 61struct nfsstatsv1 nfsstatsv1; 62int nfs_numnfscbd = 0; 63int nfscl_debuglevel = 0; 64char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 65struct callout newnfsd_callout; 66int nfsrv_lughashsize = 100; 67void (*nfsd_call_servertimer)(void) = NULL; 68void (*ncl_call_invalcaches)(struct vnode *) = NULL; 69 70static int nfs_realign_test; 71static int nfs_realign_count; 72static struct ext_nfsstats oldnfsstats; 73 74SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "NFS filesystem"); 75SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test, 76 0, "Number of realign tests done"); 77SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count, 78 0, "Number of mbuf realignments done"); 79SYSCTL_STRING(_vfs_nfs, OID_AUTO, callback_addr, CTLFLAG_RW, 80 nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr), 81 "NFSv4 callback addr for server to use"); 82SYSCTL_INT(_vfs_nfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nfscl_debuglevel, 83 0, "Debug level for NFS client"); 84SYSCTL_INT(_vfs_nfs, OID_AUTO, userhashsize, CTLFLAG_RDTUN, &nfsrv_lughashsize, 85 0, "Size of hash tables for uid/name mapping"); 86 87/* 88 * Defines for malloc 89 * (Here for FreeBSD, since they allocate storage.) 90 */ 91MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache"); 92MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id"); 93MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state", 94 "NFSD V4 State (Openowner, Open, Lockowner, Delegation"); 95MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock"); 96MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file"); 97MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string"); 98MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map"); 99MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header"); 100MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle"); 101MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner"); 102MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open"); 103MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation"); 104MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client"); 105MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner"); 106MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock"); 107MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "NFS vnode"); 108MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "NFS Direct IO buffer"); 109MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff", 110 "NFS directory offset data"); 111MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback", 112 "NFS local lock rollback"); 113MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout"); 114MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout"); 115MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info"); 116MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req"); 117MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session"); 118MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall"); 119MALLOC_DEFINE(M_NEWNFSDSESSION, "NFSD session", "NFSD Session for a client"); 120 121/* 122 * Definition of mutex locks. 123 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list 124 * and assorted other nfsd structures. 125 */ 126struct mtx newnfsd_mtx; 127struct mtx nfs_sockl_mutex; 128struct mtx nfs_state_mutex; 129struct mtx nfs_nameid_mutex; 130struct mtx nfs_req_mutex; 131struct mtx nfs_slock_mutex; 132 133/* local functions */ 134static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *); 135 136#ifdef __NO_STRICT_ALIGNMENT 137/* 138 * These architectures don't need re-alignment, so just return. 139 */ 140int 141newnfs_realign(struct mbuf **pm, int how) 142{ 143 144 return (0); 145} 146#else /* !__NO_STRICT_ALIGNMENT */ 147/* 148 * newnfs_realign: 149 * 150 * Check for badly aligned mbuf data and realign by copying the unaligned 151 * portion of the data into a new mbuf chain and freeing the portions 152 * of the old chain that were replaced. 153 * 154 * We cannot simply realign the data within the existing mbuf chain 155 * because the underlying buffers may contain other rpc commands and 156 * we cannot afford to overwrite them. 157 * 158 * We would prefer to avoid this situation entirely. The situation does 159 * not occur with NFS/UDP and is supposed to only occasionally occur 160 * with TCP. Use vfs.nfs.realign_count and realign_test to check this. 161 * 162 */ 163int 164newnfs_realign(struct mbuf **pm, int how) 165{ 166 struct mbuf *m, *n; 167 int off, space; 168 169 ++nfs_realign_test; 170 while ((m = *pm) != NULL) { 171 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) { 172 /* 173 * NB: we can't depend on m_pkthdr.len to help us 174 * decide what to do here. May not be worth doing 175 * the m_length calculation as m_copyback will 176 * expand the mbuf chain below as needed. 177 */ 178 space = m_length(m, NULL); 179 if (space >= MINCLSIZE) { 180 /* NB: m_copyback handles space > MCLBYTES */ 181 n = m_getcl(how, MT_DATA, 0); 182 } else 183 n = m_get(how, MT_DATA); 184 if (n == NULL) 185 return (ENOMEM); 186 /* 187 * Align the remainder of the mbuf chain. 188 */ 189 n->m_len = 0; 190 off = 0; 191 while (m != NULL) { 192 m_copyback(n, off, m->m_len, mtod(m, caddr_t)); 193 off += m->m_len; 194 m = m->m_next; 195 } 196 m_freem(*pm); 197 *pm = n; 198 ++nfs_realign_count; 199 break; 200 } 201 pm = &m->m_next; 202 } 203 204 return (0); 205} 206#endif /* __NO_STRICT_ALIGNMENT */ 207 208#ifdef notdef 209static void 210nfsrv_object_create(struct vnode *vp, struct thread *td) 211{ 212 213 if (vp == NULL || vp->v_type != VREG) 214 return; 215 (void) vfs_object_create(vp, td, td->td_ucred); 216} 217#endif 218 219/* 220 * Look up a file name. Basically just initialize stuff and call namei(). 221 */ 222int 223nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p) 224{ 225 int error; 226 227 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname, 228 p); 229 error = namei(ndp); 230 if (!error) { 231 NDFREE(ndp, NDF_ONLY_PNBUF); 232 } 233 return (error); 234} 235 236/* 237 * Copy NFS uid, gids to the cred structure. 238 */ 239void 240newnfs_copycred(struct nfscred *nfscr, struct ucred *cr) 241{ 242 243 KASSERT(nfscr->nfsc_ngroups >= 0, 244 ("newnfs_copycred: negative nfsc_ngroups")); 245 cr->cr_uid = nfscr->nfsc_uid; 246 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups); 247} 248 249/* 250 * Map args from nfsmsleep() to msleep(). 251 */ 252int 253nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg, 254 struct timespec *ts) 255{ 256 u_int64_t nsecval; 257 int error, timeo; 258 259 if (ts) { 260 timeo = hz * ts->tv_sec; 261 nsecval = (u_int64_t)ts->tv_nsec; 262 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) / 263 1000000000; 264 timeo += (int)nsecval; 265 } else { 266 timeo = 0; 267 } 268 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo); 269 return (error); 270} 271 272/* 273 * Get the file system info for the server. For now, just assume FFS. 274 */ 275void 276nfsvno_getfs(struct nfsfsinfo *sip, int isdgram) 277{ 278 int pref; 279 280 /* 281 * XXX 282 * There should be file system VFS OP(s) to get this information. 283 * For now, assume ufs. 284 */ 285 if (isdgram) 286 pref = NFS_MAXDGRAMDATA; 287 else 288 pref = NFS_SRVMAXIO; 289 sip->fs_rtmax = NFS_SRVMAXIO; 290 sip->fs_rtpref = pref; 291 sip->fs_rtmult = NFS_FABLKSIZE; 292 sip->fs_wtmax = NFS_SRVMAXIO; 293 sip->fs_wtpref = pref; 294 sip->fs_wtmult = NFS_FABLKSIZE; 295 sip->fs_dtpref = pref; 296 sip->fs_maxfilesize = 0xffffffffffffffffull; 297 sip->fs_timedelta.tv_sec = 0; 298 sip->fs_timedelta.tv_nsec = 1; 299 sip->fs_properties = (NFSV3FSINFO_LINK | 300 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS | 301 NFSV3FSINFO_CANSETTIME); 302} 303 304/* 305 * Do the pathconf vnode op. 306 */ 307int 308nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 309 struct ucred *cred, struct thread *p) 310{ 311 int error; 312 313 error = VOP_PATHCONF(vp, flag, retf); 314 if (error == EOPNOTSUPP || error == EINVAL) { 315 /* 316 * Some file systems return EINVAL for name arguments not 317 * supported and some return EOPNOTSUPP for this case. 318 * So the NFSv3 Pathconf RPC doesn't fail for these cases, 319 * just fake them. 320 */ 321 switch (flag) { 322 case _PC_LINK_MAX: 323 *retf = LINK_MAX; 324 break; 325 case _PC_NAME_MAX: 326 *retf = NAME_MAX; 327 break; 328 case _PC_CHOWN_RESTRICTED: 329 *retf = 1; 330 break; 331 case _PC_NO_TRUNC: 332 *retf = 1; 333 break; 334 default: 335 /* 336 * Only happens if a _PC_xxx is added to the server, 337 * but this isn't updated. 338 */ 339 *retf = 0; 340 printf("nfsrvd pathconf flag=%d not supp\n", flag); 341 } 342 error = 0; 343 } 344 NFSEXITCODE(error); 345 return (error); 346} 347 348/* Fake nfsrv_atroot. Just return 0 */ 349int 350nfsrv_atroot(struct vnode *vp, long *retp) 351{ 352 353 return (0); 354} 355 356/* 357 * Set the credentials to refer to root. 358 * If only the various BSDen could agree on whether cr_gid is a separate 359 * field or cr_groups[0]... 360 */ 361void 362newnfs_setroot(struct ucred *cred) 363{ 364 365 cred->cr_uid = 0; 366 cred->cr_groups[0] = 0; 367 cred->cr_ngroups = 1; 368} 369 370/* 371 * Get the client credential. Used for Renew and recovery. 372 */ 373struct ucred * 374newnfs_getcred(void) 375{ 376 struct ucred *cred; 377 struct thread *td = curthread; 378 379 cred = crdup(td->td_ucred); 380 newnfs_setroot(cred); 381 return (cred); 382} 383 384/* 385 * Nfs timer routine 386 * Call the nfsd's timer function once/sec. 387 */ 388void 389newnfs_timer(void *arg) 390{ 391 static time_t lasttime = 0; 392 /* 393 * Call the server timer, if set up. 394 * The argument indicates if it is the next second and therefore 395 * leases should be checked. 396 */ 397 if (lasttime != NFSD_MONOSEC) { 398 lasttime = NFSD_MONOSEC; 399 if (nfsd_call_servertimer != NULL) 400 (*nfsd_call_servertimer)(); 401 } 402 callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL); 403} 404 405 406/* 407 * Sleep for a short period of time unless errval == NFSERR_GRACE, where 408 * the sleep should be for 5 seconds. 409 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on 410 * an event that never gets a wakeup. Only return EINTR or 0. 411 */ 412int 413nfs_catnap(int prio, int errval, const char *wmesg) 414{ 415 static int non_event; 416 int ret; 417 418 if (errval == NFSERR_GRACE) 419 ret = tsleep(&non_event, prio, wmesg, 5 * hz); 420 else 421 ret = tsleep(&non_event, prio, wmesg, 1); 422 if (ret != EINTR) 423 ret = 0; 424 return (ret); 425} 426 427/* 428 * Get referral. For now, just fail. 429 */ 430struct nfsreferral * 431nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno) 432{ 433 434 return (NULL); 435} 436 437static int 438nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap) 439{ 440 int error; 441 442 error = nfssvc_call(td, uap, td->td_ucred); 443 NFSEXITCODE(error); 444 return (error); 445} 446 447static int 448nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 449{ 450 int error = EINVAL, i, j; 451 struct nfsd_idargs nid; 452 struct nfsd_oidargs onid; 453 struct { 454 int vers; /* Just the first field of nfsstats. */ 455 } nfsstatver; 456 457 if (uap->flag & NFSSVC_IDNAME) { 458 if ((uap->flag & NFSSVC_NEWSTRUCT) != 0) 459 error = copyin(uap->argp, &nid, sizeof(nid)); 460 else { 461 error = copyin(uap->argp, &onid, sizeof(onid)); 462 if (error == 0) { 463 nid.nid_flag = onid.nid_flag; 464 nid.nid_uid = onid.nid_uid; 465 nid.nid_gid = onid.nid_gid; 466 nid.nid_usermax = onid.nid_usermax; 467 nid.nid_usertimeout = onid.nid_usertimeout; 468 nid.nid_name = onid.nid_name; 469 nid.nid_namelen = onid.nid_namelen; 470 nid.nid_ngroup = 0; 471 nid.nid_grps = NULL; 472 } 473 } 474 if (error) 475 goto out; 476 error = nfssvc_idname(&nid); 477 goto out; 478 } else if (uap->flag & NFSSVC_GETSTATS) { 479 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { 480 /* Copy fields to the old ext_nfsstat structure. */ 481 oldnfsstats.attrcache_hits = 482 nfsstatsv1.attrcache_hits; 483 oldnfsstats.attrcache_misses = 484 nfsstatsv1.attrcache_misses; 485 oldnfsstats.lookupcache_hits = 486 nfsstatsv1.lookupcache_hits; 487 oldnfsstats.lookupcache_misses = 488 nfsstatsv1.lookupcache_misses; 489 oldnfsstats.direofcache_hits = 490 nfsstatsv1.direofcache_hits; 491 oldnfsstats.direofcache_misses = 492 nfsstatsv1.direofcache_misses; 493 oldnfsstats.accesscache_hits = 494 nfsstatsv1.accesscache_hits; 495 oldnfsstats.accesscache_misses = 496 nfsstatsv1.accesscache_misses; 497 oldnfsstats.biocache_reads = 498 nfsstatsv1.biocache_reads; 499 oldnfsstats.read_bios = 500 nfsstatsv1.read_bios; 501 oldnfsstats.read_physios = 502 nfsstatsv1.read_physios; 503 oldnfsstats.biocache_writes = 504 nfsstatsv1.biocache_writes; 505 oldnfsstats.write_bios = 506 nfsstatsv1.write_bios; 507 oldnfsstats.write_physios = 508 nfsstatsv1.write_physios; 509 oldnfsstats.biocache_readlinks = 510 nfsstatsv1.biocache_readlinks; 511 oldnfsstats.readlink_bios = 512 nfsstatsv1.readlink_bios; 513 oldnfsstats.biocache_readdirs = 514 nfsstatsv1.biocache_readdirs; 515 oldnfsstats.readdir_bios = 516 nfsstatsv1.readdir_bios; 517 for (i = 0; i < NFSV4_NPROCS; i++) 518 oldnfsstats.rpccnt[i] = nfsstatsv1.rpccnt[i]; 519 oldnfsstats.rpcretries = nfsstatsv1.rpcretries; 520 for (i = 0; i < NFSV4OP_NOPS; i++) 521 oldnfsstats.srvrpccnt[i] = 522 nfsstatsv1.srvrpccnt[i]; 523 for (i = NFSV42_NOPS, j = NFSV4OP_NOPS; 524 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++) 525 oldnfsstats.srvrpccnt[j] = 526 nfsstatsv1.srvrpccnt[i]; 527 oldnfsstats.srvrpc_errs = nfsstatsv1.srvrpc_errs; 528 oldnfsstats.srv_errs = nfsstatsv1.srv_errs; 529 oldnfsstats.rpcrequests = nfsstatsv1.rpcrequests; 530 oldnfsstats.rpctimeouts = nfsstatsv1.rpctimeouts; 531 oldnfsstats.rpcunexpected = nfsstatsv1.rpcunexpected; 532 oldnfsstats.rpcinvalid = nfsstatsv1.rpcinvalid; 533 oldnfsstats.srvcache_inproghits = 534 nfsstatsv1.srvcache_inproghits; 535 oldnfsstats.srvcache_idemdonehits = 536 nfsstatsv1.srvcache_idemdonehits; 537 oldnfsstats.srvcache_nonidemdonehits = 538 nfsstatsv1.srvcache_nonidemdonehits; 539 oldnfsstats.srvcache_misses = 540 nfsstatsv1.srvcache_misses; 541 oldnfsstats.srvcache_tcppeak = 542 nfsstatsv1.srvcache_tcppeak; 543 oldnfsstats.srvcache_size = nfsstatsv1.srvcache_size; 544 oldnfsstats.srvclients = nfsstatsv1.srvclients; 545 oldnfsstats.srvopenowners = nfsstatsv1.srvopenowners; 546 oldnfsstats.srvopens = nfsstatsv1.srvopens; 547 oldnfsstats.srvlockowners = nfsstatsv1.srvlockowners; 548 oldnfsstats.srvlocks = nfsstatsv1.srvlocks; 549 oldnfsstats.srvdelegates = nfsstatsv1.srvdelegates; 550 for (i = 0; i < NFSV4OP_CBNOPS; i++) 551 oldnfsstats.cbrpccnt[i] = 552 nfsstatsv1.cbrpccnt[i]; 553 oldnfsstats.clopenowners = nfsstatsv1.clopenowners; 554 oldnfsstats.clopens = nfsstatsv1.clopens; 555 oldnfsstats.cllockowners = nfsstatsv1.cllockowners; 556 oldnfsstats.cllocks = nfsstatsv1.cllocks; 557 oldnfsstats.cldelegates = nfsstatsv1.cldelegates; 558 oldnfsstats.cllocalopenowners = 559 nfsstatsv1.cllocalopenowners; 560 oldnfsstats.cllocalopens = nfsstatsv1.cllocalopens; 561 oldnfsstats.cllocallockowners = 562 nfsstatsv1.cllocallockowners; 563 oldnfsstats.cllocallocks = nfsstatsv1.cllocallocks; 564 error = copyout(&oldnfsstats, uap->argp, 565 sizeof (oldnfsstats)); 566 } else { 567 error = copyin(uap->argp, &nfsstatver, 568 sizeof(nfsstatver)); 569 if (error == 0 && nfsstatver.vers != NFSSTATS_V1) 570 error = EPERM; 571 if (error == 0) 572 error = copyout(&nfsstatsv1, uap->argp, 573 sizeof (nfsstatsv1)); 574 } 575 if (error == 0) { 576 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) { 577 nfsstatsv1.attrcache_hits = 0; 578 nfsstatsv1.attrcache_misses = 0; 579 nfsstatsv1.lookupcache_hits = 0; 580 nfsstatsv1.lookupcache_misses = 0; 581 nfsstatsv1.direofcache_hits = 0; 582 nfsstatsv1.direofcache_misses = 0; 583 nfsstatsv1.accesscache_hits = 0; 584 nfsstatsv1.accesscache_misses = 0; 585 nfsstatsv1.biocache_reads = 0; 586 nfsstatsv1.read_bios = 0; 587 nfsstatsv1.read_physios = 0; 588 nfsstatsv1.biocache_writes = 0; 589 nfsstatsv1.write_bios = 0; 590 nfsstatsv1.write_physios = 0; 591 nfsstatsv1.biocache_readlinks = 0; 592 nfsstatsv1.readlink_bios = 0; 593 nfsstatsv1.biocache_readdirs = 0; 594 nfsstatsv1.readdir_bios = 0; 595 nfsstatsv1.rpcretries = 0; 596 nfsstatsv1.rpcrequests = 0; 597 nfsstatsv1.rpctimeouts = 0; 598 nfsstatsv1.rpcunexpected = 0; 599 nfsstatsv1.rpcinvalid = 0; 600 bzero(nfsstatsv1.rpccnt, 601 sizeof(nfsstatsv1.rpccnt)); 602 } 603 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) { 604 nfsstatsv1.srvrpc_errs = 0; 605 nfsstatsv1.srv_errs = 0; 606 nfsstatsv1.srvcache_inproghits = 0; 607 nfsstatsv1.srvcache_idemdonehits = 0; 608 nfsstatsv1.srvcache_nonidemdonehits = 0; 609 nfsstatsv1.srvcache_misses = 0; 610 nfsstatsv1.srvcache_tcppeak = 0; 611 nfsstatsv1.srvclients = 0; 612 nfsstatsv1.srvopenowners = 0; 613 nfsstatsv1.srvopens = 0; 614 nfsstatsv1.srvlockowners = 0; 615 nfsstatsv1.srvlocks = 0; 616 nfsstatsv1.srvdelegates = 0; 617 nfsstatsv1.clopenowners = 0; 618 nfsstatsv1.clopens = 0; 619 nfsstatsv1.cllockowners = 0; 620 nfsstatsv1.cllocks = 0; 621 nfsstatsv1.cldelegates = 0; 622 nfsstatsv1.cllocalopenowners = 0; 623 nfsstatsv1.cllocalopens = 0; 624 nfsstatsv1.cllocallockowners = 0; 625 nfsstatsv1.cllocallocks = 0; 626 bzero(nfsstatsv1.srvrpccnt, 627 sizeof(nfsstatsv1.srvrpccnt)); 628 bzero(nfsstatsv1.cbrpccnt, 629 sizeof(nfsstatsv1.cbrpccnt)); 630 } 631 } 632 goto out; 633 } else if (uap->flag & NFSSVC_NFSUSERDPORT) { 634 u_short sockport; 635 636 error = copyin(uap->argp, (caddr_t)&sockport, 637 sizeof (u_short)); 638 if (!error) 639 error = nfsrv_nfsuserdport(sockport, p); 640 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) { 641 nfsrv_nfsuserddelport(); 642 error = 0; 643 } 644 645out: 646 NFSEXITCODE(error); 647 return (error); 648} 649 650/* 651 * called by all three modevent routines, so that it gets things 652 * initialized soon enough. 653 */ 654void 655newnfs_portinit(void) 656{ 657 static int inited = 0; 658 659 if (inited) 660 return; 661 inited = 1; 662 /* Initialize SMP locks used by both client and server. */ 663 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF); 664 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF); 665} 666 667/* 668 * Determine if the file system supports NFSv4 ACLs. 669 * Return 1 if it does, 0 otherwise. 670 */ 671int 672nfs_supportsnfsv4acls(struct vnode *vp) 673{ 674 int error; 675 register_t retval; 676 677 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls"); 678 679 if (nfsrv_useacl == 0) 680 return (0); 681 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval); 682 if (error == 0 && retval != 0) 683 return (1); 684 return (0); 685} 686 687extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *); 688 689/* 690 * Called once to initialize data structures... 691 */ 692static int 693nfscommon_modevent(module_t mod, int type, void *data) 694{ 695 int error = 0; 696 static int loaded = 0; 697 698 switch (type) { 699 case MOD_LOAD: 700 if (loaded) 701 goto out; 702 newnfs_portinit(); 703 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF); 704 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF); 705 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF); 706 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF); 707 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL, 708 MTX_DEF); 709 callout_init(&newnfsd_callout, 1); 710 newnfs_init(); 711 nfsd_call_nfscommon = nfssvc_nfscommon; 712 loaded = 1; 713 break; 714 715 case MOD_UNLOAD: 716 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 || 717 nfs_numnfscbd != 0) { 718 error = EBUSY; 719 break; 720 } 721 722 nfsd_call_nfscommon = NULL; 723 callout_drain(&newnfsd_callout); 724 /* Clean out the name<-->id cache. */ 725 nfsrv_cleanusergroup(); 726 /* and get rid of the mutexes */ 727 mtx_destroy(&nfs_nameid_mutex); 728 mtx_destroy(&newnfsd_mtx); 729 mtx_destroy(&nfs_state_mutex); 730 mtx_destroy(&nfs_sockl_mutex); 731 mtx_destroy(&nfs_slock_mutex); 732 mtx_destroy(&nfs_req_mutex); 733 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); 734 loaded = 0; 735 break; 736 default: 737 error = EOPNOTSUPP; 738 break; 739 } 740 741out: 742 NFSEXITCODE(error); 743 return error; 744} 745static moduledata_t nfscommon_mod = { 746 "nfscommon", 747 nfscommon_modevent, 748 NULL, 749}; 750DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY); 751 752/* So that loader and kldload(2) can find us, wherever we are.. */ 753MODULE_VERSION(nfscommon, 1); 754MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1); 755MODULE_DEPEND(nfscommon, krpc, 1, 1, 1); 756 757