Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/fs/nfs/nfs_commonport.c
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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 __FBSDID("$FreeBSD$"); 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/nfsport.h> 45 #include <sys/smp.h> 46 #include <sys/sysctl.h> 47 #include <sys/taskqueue.h> 48 #include <rpc/rpc_com.h> 49 #include <vm/vm.h> 50 #include <vm/vm_object.h> 51 #include <vm/vm_page.h> 52 #include <vm/vm_param.h> 53 #include <vm/vm_map.h> 54 #include <vm/vm_kern.h> 55 #include <vm/vm_extern.h> 56 #include <vm/uma.h> 57 58 extern int nfscl_ticks; 59 extern nfsuserd_state nfsrv_nfsuserd; 60 extern struct nfssockreq nfsrv_nfsuserdsock; 61 extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *, 62 struct thread *); 63 extern int nfsrv_useacl; 64 struct mount nfsv4root_mnt; 65 int newnfs_numnfsd = 0; 66 struct nfsstatsv1 nfsstatsv1; 67 int nfs_numnfscbd = 0; 68 int nfscl_debuglevel = 0; 69 char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 70 int nfsrv_lughashsize = 100; 71 struct mtx nfsrv_dslock_mtx; 72 struct nfsdevicehead nfsrv_devidhead; 73 volatile int nfsrv_devidcnt = 0; 74 void (*ncl_call_invalcaches)(struct vnode *) = NULL; 75 vop_advlock_t *nfs_advlock_p = NULL; 76 vop_reclaim_t *nfs_reclaim_p = NULL; 77 uint32_t nfs_srvmaxio = NFS_SRVMAXIO; 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_NEWNFSDIRECTIO, "NEWdirectio", "NFS Direct IO buffer"); 125 MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroff", 126 "NFS directory offset data"); 127 MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback", 128 "NFS local lock rollback"); 129 MALLOC_DEFINE(M_NEWNFSLAYOUT, "NFSCL layout", "NFSv4.1 Layout"); 130 MALLOC_DEFINE(M_NEWNFSFLAYOUT, "NFSCL flayout", "NFSv4.1 File Layout"); 131 MALLOC_DEFINE(M_NEWNFSDEVINFO, "NFSCL devinfo", "NFSv4.1 Device Info"); 132 MALLOC_DEFINE(M_NEWNFSSOCKREQ, "NFSCL sockreq", "NFS Sock Req"); 133 MALLOC_DEFINE(M_NEWNFSCLDS, "NFSCL session", "NFSv4.1 Session"); 134 MALLOC_DEFINE(M_NEWNFSLAYRECALL, "NFSCL layrecall", "NFSv4.1 Layout Recall"); 135 MALLOC_DEFINE(M_NEWNFSDSESSION, "NFSD session", "NFSD Session for a client"); 136 137 /* 138 * Definition of mutex locks. 139 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list 140 * and assorted other nfsd structures. 141 */ 142 struct mtx newnfsd_mtx; 143 struct mtx nfs_sockl_mutex; 144 struct mtx nfs_state_mutex; 145 struct mtx nfs_nameid_mutex; 146 struct mtx nfs_req_mutex; 147 struct mtx nfs_slock_mutex; 148 struct mtx nfs_clstate_mutex; 149 150 /* local functions */ 151 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *); 152 153 #ifdef __NO_STRICT_ALIGNMENT 154 /* 155 * These architectures don't need re-alignment, so just return. 156 */ 157 int 158 newnfs_realign(struct mbuf **pm, int how) 159 { 160 161 return (0); 162 } 163 #else /* !__NO_STRICT_ALIGNMENT */ 164 /* 165 * newnfs_realign: 166 * 167 * Check for badly aligned mbuf data and realign by copying the unaligned 168 * portion of the data into a new mbuf chain and freeing the portions 169 * of the old chain that were replaced. 170 * 171 * We cannot simply realign the data within the existing mbuf chain 172 * because the underlying buffers may contain other rpc commands and 173 * we cannot afford to overwrite them. 174 * 175 * We would prefer to avoid this situation entirely. The situation does 176 * not occur with NFS/UDP and is supposed to only occasionally occur 177 * with TCP. Use vfs.nfs.realign_count and realign_test to check this. 178 * 179 */ 180 int 181 newnfs_realign(struct mbuf **pm, int how) 182 { 183 struct mbuf *m, *n; 184 int off, space; 185 186 ++nfs_realign_test; 187 while ((m = *pm) != NULL) { 188 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) { 189 /* 190 * NB: we can't depend on m_pkthdr.len to help us 191 * decide what to do here. May not be worth doing 192 * the m_length calculation as m_copyback will 193 * expand the mbuf chain below as needed. 194 */ 195 space = m_length(m, NULL); 196 if (space >= MINCLSIZE) { 197 /* NB: m_copyback handles space > MCLBYTES */ 198 n = m_getcl(how, MT_DATA, 0); 199 } else 200 n = m_get(how, MT_DATA); 201 if (n == NULL) 202 return (ENOMEM); 203 /* 204 * Align the remainder of the mbuf chain. 205 */ 206 n->m_len = 0; 207 off = 0; 208 while (m != NULL) { 209 m_copyback(n, off, m->m_len, mtod(m, caddr_t)); 210 off += m->m_len; 211 m = m->m_next; 212 } 213 m_freem(*pm); 214 *pm = n; 215 ++nfs_realign_count; 216 break; 217 } 218 pm = &m->m_next; 219 } 220 221 return (0); 222 } 223 #endif /* __NO_STRICT_ALIGNMENT */ 224 225 #ifdef notdef 226 static void 227 nfsrv_object_create(struct vnode *vp, struct thread *td) 228 { 229 230 if (vp == NULL || vp->v_type != VREG) 231 return; 232 (void) vfs_object_create(vp, td, td->td_ucred); 233 } 234 #endif 235 236 /* 237 * Look up a file name. Basically just initialize stuff and call namei(). 238 */ 239 int 240 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p __unused) 241 { 242 int error; 243 244 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname); 245 error = namei(ndp); 246 if (!error) { 247 NDFREE_PNBUF(ndp); 248 } 249 return (error); 250 } 251 252 /* 253 * Copy NFS uid, gids to the cred structure. 254 */ 255 void 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(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups); 263 } 264 265 /* 266 * Map args from nfsmsleep() to msleep(). 267 */ 268 int 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 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 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 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 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 * 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 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 * 425 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno) 426 { 427 428 return (NULL); 429 } 430 431 static int 432 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap) 433 { 434 int error; 435 436 error = nfssvc_call(td, uap, td->td_ucred); 437 NFSEXITCODE(error); 438 return (error); 439 } 440 441 static int 442 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 443 { 444 int error = EINVAL, i, j; 445 struct nfsd_idargs nid; 446 struct nfsd_oidargs onid; 447 struct { 448 int vers; /* Just the first field of nfsstats. */ 449 } nfsstatver; 450 451 if (uap->flag & NFSSVC_IDNAME) { 452 if ((uap->flag & NFSSVC_NEWSTRUCT) != 0) 453 error = copyin(uap->argp, &nid, sizeof(nid)); 454 else { 455 error = copyin(uap->argp, &onid, sizeof(onid)); 456 if (error == 0) { 457 nid.nid_flag = onid.nid_flag; 458 nid.nid_uid = onid.nid_uid; 459 nid.nid_gid = onid.nid_gid; 460 nid.nid_usermax = onid.nid_usermax; 461 nid.nid_usertimeout = onid.nid_usertimeout; 462 nid.nid_name = onid.nid_name; 463 nid.nid_namelen = onid.nid_namelen; 464 nid.nid_ngroup = 0; 465 nid.nid_grps = NULL; 466 } 467 } 468 if (error) 469 goto out; 470 error = nfssvc_idname(&nid); 471 goto out; 472 } else if (uap->flag & NFSSVC_GETSTATS) { 473 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { 474 /* Copy fields to the old ext_nfsstat structure. */ 475 oldnfsstats.attrcache_hits = 476 nfsstatsv1.attrcache_hits; 477 oldnfsstats.attrcache_misses = 478 nfsstatsv1.attrcache_misses; 479 oldnfsstats.lookupcache_hits = 480 nfsstatsv1.lookupcache_hits; 481 oldnfsstats.lookupcache_misses = 482 nfsstatsv1.lookupcache_misses; 483 oldnfsstats.direofcache_hits = 484 nfsstatsv1.direofcache_hits; 485 oldnfsstats.direofcache_misses = 486 nfsstatsv1.direofcache_misses; 487 oldnfsstats.accesscache_hits = 488 nfsstatsv1.accesscache_hits; 489 oldnfsstats.accesscache_misses = 490 nfsstatsv1.accesscache_misses; 491 oldnfsstats.biocache_reads = 492 nfsstatsv1.biocache_reads; 493 oldnfsstats.read_bios = 494 nfsstatsv1.read_bios; 495 oldnfsstats.read_physios = 496 nfsstatsv1.read_physios; 497 oldnfsstats.biocache_writes = 498 nfsstatsv1.biocache_writes; 499 oldnfsstats.write_bios = 500 nfsstatsv1.write_bios; 501 oldnfsstats.write_physios = 502 nfsstatsv1.write_physios; 503 oldnfsstats.biocache_readlinks = 504 nfsstatsv1.biocache_readlinks; 505 oldnfsstats.readlink_bios = 506 nfsstatsv1.readlink_bios; 507 oldnfsstats.biocache_readdirs = 508 nfsstatsv1.biocache_readdirs; 509 oldnfsstats.readdir_bios = 510 nfsstatsv1.readdir_bios; 511 for (i = 0; i < NFSV4_NPROCS; i++) 512 oldnfsstats.rpccnt[i] = nfsstatsv1.rpccnt[i]; 513 oldnfsstats.rpcretries = nfsstatsv1.rpcretries; 514 for (i = 0; i < NFSV4OP_NOPS; i++) 515 oldnfsstats.srvrpccnt[i] = 516 nfsstatsv1.srvrpccnt[i]; 517 for (i = NFSV42_NOPS, j = NFSV4OP_NOPS; 518 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; i++, j++) 519 oldnfsstats.srvrpccnt[j] = 520 nfsstatsv1.srvrpccnt[i]; 521 oldnfsstats.reserved_0 = 0; 522 oldnfsstats.reserved_1 = 0; 523 oldnfsstats.rpcrequests = nfsstatsv1.rpcrequests; 524 oldnfsstats.rpctimeouts = nfsstatsv1.rpctimeouts; 525 oldnfsstats.rpcunexpected = nfsstatsv1.rpcunexpected; 526 oldnfsstats.rpcinvalid = nfsstatsv1.rpcinvalid; 527 oldnfsstats.srvcache_inproghits = 528 nfsstatsv1.srvcache_inproghits; 529 oldnfsstats.reserved_2 = 0; 530 oldnfsstats.srvcache_nonidemdonehits = 531 nfsstatsv1.srvcache_nonidemdonehits; 532 oldnfsstats.srvcache_misses = 533 nfsstatsv1.srvcache_misses; 534 oldnfsstats.srvcache_tcppeak = 535 nfsstatsv1.srvcache_tcppeak; 536 oldnfsstats.srvcache_size = nfsstatsv1.srvcache_size; 537 oldnfsstats.srvclients = nfsstatsv1.srvclients; 538 oldnfsstats.srvopenowners = nfsstatsv1.srvopenowners; 539 oldnfsstats.srvopens = nfsstatsv1.srvopens; 540 oldnfsstats.srvlockowners = nfsstatsv1.srvlockowners; 541 oldnfsstats.srvlocks = nfsstatsv1.srvlocks; 542 oldnfsstats.srvdelegates = nfsstatsv1.srvdelegates; 543 for (i = 0; i < NFSV4OP_CBNOPS; i++) 544 oldnfsstats.cbrpccnt[i] = 545 nfsstatsv1.cbrpccnt[i]; 546 oldnfsstats.clopenowners = nfsstatsv1.clopenowners; 547 oldnfsstats.clopens = nfsstatsv1.clopens; 548 oldnfsstats.cllockowners = nfsstatsv1.cllockowners; 549 oldnfsstats.cllocks = nfsstatsv1.cllocks; 550 oldnfsstats.cldelegates = nfsstatsv1.cldelegates; 551 oldnfsstats.cllocalopenowners = 552 nfsstatsv1.cllocalopenowners; 553 oldnfsstats.cllocalopens = nfsstatsv1.cllocalopens; 554 oldnfsstats.cllocallockowners = 555 nfsstatsv1.cllocallockowners; 556 oldnfsstats.cllocallocks = nfsstatsv1.cllocallocks; 557 error = copyout(&oldnfsstats, uap->argp, 558 sizeof (oldnfsstats)); 559 } else { 560 error = copyin(uap->argp, &nfsstatver, 561 sizeof(nfsstatver)); 562 if (error == 0) { 563 if (nfsstatver.vers == NFSSTATS_OV1) { 564 /* Copy nfsstatsv1 to nfsstatsov1. */ 565 nfsstatsov1.attrcache_hits = 566 nfsstatsv1.attrcache_hits; 567 nfsstatsov1.attrcache_misses = 568 nfsstatsv1.attrcache_misses; 569 nfsstatsov1.lookupcache_hits = 570 nfsstatsv1.lookupcache_hits; 571 nfsstatsov1.lookupcache_misses = 572 nfsstatsv1.lookupcache_misses; 573 nfsstatsov1.direofcache_hits = 574 nfsstatsv1.direofcache_hits; 575 nfsstatsov1.direofcache_misses = 576 nfsstatsv1.direofcache_misses; 577 nfsstatsov1.accesscache_hits = 578 nfsstatsv1.accesscache_hits; 579 nfsstatsov1.accesscache_misses = 580 nfsstatsv1.accesscache_misses; 581 nfsstatsov1.biocache_reads = 582 nfsstatsv1.biocache_reads; 583 nfsstatsov1.read_bios = 584 nfsstatsv1.read_bios; 585 nfsstatsov1.read_physios = 586 nfsstatsv1.read_physios; 587 nfsstatsov1.biocache_writes = 588 nfsstatsv1.biocache_writes; 589 nfsstatsov1.write_bios = 590 nfsstatsv1.write_bios; 591 nfsstatsov1.write_physios = 592 nfsstatsv1.write_physios; 593 nfsstatsov1.biocache_readlinks = 594 nfsstatsv1.biocache_readlinks; 595 nfsstatsov1.readlink_bios = 596 nfsstatsv1.readlink_bios; 597 nfsstatsov1.biocache_readdirs = 598 nfsstatsv1.biocache_readdirs; 599 nfsstatsov1.readdir_bios = 600 nfsstatsv1.readdir_bios; 601 for (i = 0; i < NFSV42_OLDNPROCS; i++) 602 nfsstatsov1.rpccnt[i] = 603 nfsstatsv1.rpccnt[i]; 604 nfsstatsov1.rpcretries = 605 nfsstatsv1.rpcretries; 606 for (i = 0; i < NFSV42_PURENOPS; i++) 607 nfsstatsov1.srvrpccnt[i] = 608 nfsstatsv1.srvrpccnt[i]; 609 for (i = NFSV42_NOPS, 610 j = NFSV42_PURENOPS; 611 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; 612 i++, j++) 613 nfsstatsov1.srvrpccnt[j] = 614 nfsstatsv1.srvrpccnt[i]; 615 nfsstatsov1.reserved_0 = 0; 616 nfsstatsov1.reserved_1 = 0; 617 nfsstatsov1.rpcrequests = 618 nfsstatsv1.rpcrequests; 619 nfsstatsov1.rpctimeouts = 620 nfsstatsv1.rpctimeouts; 621 nfsstatsov1.rpcunexpected = 622 nfsstatsv1.rpcunexpected; 623 nfsstatsov1.rpcinvalid = 624 nfsstatsv1.rpcinvalid; 625 nfsstatsov1.srvcache_inproghits = 626 nfsstatsv1.srvcache_inproghits; 627 nfsstatsov1.reserved_2 = 0; 628 nfsstatsov1.srvcache_nonidemdonehits = 629 nfsstatsv1.srvcache_nonidemdonehits; 630 nfsstatsov1.srvcache_misses = 631 nfsstatsv1.srvcache_misses; 632 nfsstatsov1.srvcache_tcppeak = 633 nfsstatsv1.srvcache_tcppeak; 634 nfsstatsov1.srvcache_size = 635 nfsstatsv1.srvcache_size; 636 nfsstatsov1.srvclients = 637 nfsstatsv1.srvclients; 638 nfsstatsov1.srvopenowners = 639 nfsstatsv1.srvopenowners; 640 nfsstatsov1.srvopens = 641 nfsstatsv1.srvopens; 642 nfsstatsov1.srvlockowners = 643 nfsstatsv1.srvlockowners; 644 nfsstatsov1.srvlocks = 645 nfsstatsv1.srvlocks; 646 nfsstatsov1.srvdelegates = 647 nfsstatsv1.srvdelegates; 648 for (i = 0; i < NFSV42_CBNOPS; i++) 649 nfsstatsov1.cbrpccnt[i] = 650 nfsstatsv1.cbrpccnt[i]; 651 nfsstatsov1.clopenowners = 652 nfsstatsv1.clopenowners; 653 nfsstatsov1.clopens = 654 nfsstatsv1.clopens; 655 nfsstatsov1.cllockowners = 656 nfsstatsv1.cllockowners; 657 nfsstatsov1.cllocks = 658 nfsstatsv1.cllocks; 659 nfsstatsov1.cldelegates = 660 nfsstatsv1.cldelegates; 661 nfsstatsov1.cllocalopenowners = 662 nfsstatsv1.cllocalopenowners; 663 nfsstatsov1.cllocalopens = 664 nfsstatsv1.cllocalopens; 665 nfsstatsov1.cllocallockowners = 666 nfsstatsv1.cllocallockowners; 667 nfsstatsov1.cllocallocks = 668 nfsstatsv1.cllocallocks; 669 nfsstatsov1.srvstartcnt = 670 nfsstatsv1.srvstartcnt; 671 nfsstatsov1.srvdonecnt = 672 nfsstatsv1.srvdonecnt; 673 for (i = NFSV42_NOPS, 674 j = NFSV42_PURENOPS; 675 i < NFSV42_NOPS + NFSV4OP_FAKENOPS; 676 i++, j++) { 677 nfsstatsov1.srvbytes[j] = 678 nfsstatsv1.srvbytes[i]; 679 nfsstatsov1.srvops[j] = 680 nfsstatsv1.srvops[i]; 681 nfsstatsov1.srvduration[j] = 682 nfsstatsv1.srvduration[i]; 683 } 684 nfsstatsov1.busyfrom = 685 nfsstatsv1.busyfrom; 686 nfsstatsov1.busyfrom = 687 nfsstatsv1.busyfrom; 688 error = copyout(&nfsstatsov1, uap->argp, 689 sizeof(nfsstatsov1)); 690 } else if (nfsstatver.vers != NFSSTATS_V1) 691 error = EPERM; 692 else 693 error = copyout(&nfsstatsv1, uap->argp, 694 sizeof(nfsstatsv1)); 695 } 696 } 697 if (error == 0) { 698 if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) { 699 nfsstatsv1.attrcache_hits = 0; 700 nfsstatsv1.attrcache_misses = 0; 701 nfsstatsv1.lookupcache_hits = 0; 702 nfsstatsv1.lookupcache_misses = 0; 703 nfsstatsv1.direofcache_hits = 0; 704 nfsstatsv1.direofcache_misses = 0; 705 nfsstatsv1.accesscache_hits = 0; 706 nfsstatsv1.accesscache_misses = 0; 707 nfsstatsv1.biocache_reads = 0; 708 nfsstatsv1.read_bios = 0; 709 nfsstatsv1.read_physios = 0; 710 nfsstatsv1.biocache_writes = 0; 711 nfsstatsv1.write_bios = 0; 712 nfsstatsv1.write_physios = 0; 713 nfsstatsv1.biocache_readlinks = 0; 714 nfsstatsv1.readlink_bios = 0; 715 nfsstatsv1.biocache_readdirs = 0; 716 nfsstatsv1.readdir_bios = 0; 717 nfsstatsv1.rpcretries = 0; 718 nfsstatsv1.rpcrequests = 0; 719 nfsstatsv1.rpctimeouts = 0; 720 nfsstatsv1.rpcunexpected = 0; 721 nfsstatsv1.rpcinvalid = 0; 722 bzero(nfsstatsv1.rpccnt, 723 sizeof(nfsstatsv1.rpccnt)); 724 } 725 if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) { 726 nfsstatsv1.srvcache_inproghits = 0; 727 nfsstatsv1.srvcache_nonidemdonehits = 0; 728 nfsstatsv1.srvcache_misses = 0; 729 nfsstatsv1.srvcache_tcppeak = 0; 730 bzero(nfsstatsv1.srvrpccnt, 731 sizeof(nfsstatsv1.srvrpccnt)); 732 bzero(nfsstatsv1.cbrpccnt, 733 sizeof(nfsstatsv1.cbrpccnt)); 734 } 735 } 736 goto out; 737 } else if (uap->flag & NFSSVC_NFSUSERDPORT) { 738 u_short sockport; 739 struct nfsuserd_args nargs; 740 741 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { 742 error = copyin(uap->argp, (caddr_t)&sockport, 743 sizeof (u_short)); 744 if (error == 0) { 745 nargs.nuserd_family = AF_INET; 746 nargs.nuserd_port = sockport; 747 } 748 } else { 749 /* 750 * New nfsuserd_args structure, which indicates 751 * which IP version to use along with the port#. 752 */ 753 error = copyin(uap->argp, &nargs, sizeof(nargs)); 754 } 755 if (!error) 756 error = nfsrv_nfsuserdport(&nargs, p); 757 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) { 758 nfsrv_nfsuserddelport(); 759 error = 0; 760 } 761 762 out: 763 NFSEXITCODE(error); 764 return (error); 765 } 766 767 /* 768 * called by all three modevent routines, so that it gets things 769 * initialized soon enough. 770 */ 771 void 772 newnfs_portinit(void) 773 { 774 static int inited = 0; 775 776 if (inited) 777 return; 778 inited = 1; 779 /* Initialize SMP locks used by both client and server. */ 780 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF); 781 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF); 782 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL, MTX_DEF); 783 } 784 785 /* 786 * Determine if the file system supports NFSv4 ACLs. 787 * Return 1 if it does, 0 otherwise. 788 */ 789 int 790 nfs_supportsnfsv4acls(struct vnode *vp) 791 { 792 int error; 793 long retval; 794 795 ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls"); 796 797 if (nfsrv_useacl == 0) 798 return (0); 799 error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval); 800 if (error == 0 && retval != 0) 801 return (1); 802 return (0); 803 } 804 805 /* 806 * These are the first fields of all the context structures passed into 807 * nfs_pnfsio(). 808 */ 809 struct pnfsio { 810 int done; 811 int inprog; 812 struct task tsk; 813 }; 814 815 /* 816 * Do a mirror I/O on a pNFS thread. 817 */ 818 int 819 nfs_pnfsio(task_fn_t *func, void *context) 820 { 821 struct pnfsio *pio; 822 int ret; 823 static struct taskqueue *pnfsioq = NULL; 824 825 pio = (struct pnfsio *)context; 826 if (pnfsioq == NULL) { 827 if (nfs_pnfsiothreads == 0) 828 return (EPERM); 829 if (nfs_pnfsiothreads < 0) 830 nfs_pnfsiothreads = mp_ncpus * 4; 831 pnfsioq = taskqueue_create("pnfsioq", M_WAITOK, 832 taskqueue_thread_enqueue, &pnfsioq); 833 if (pnfsioq == NULL) 834 return (ENOMEM); 835 ret = taskqueue_start_threads(&pnfsioq, nfs_pnfsiothreads, 836 0, "pnfsiot"); 837 if (ret != 0) { 838 taskqueue_free(pnfsioq); 839 pnfsioq = NULL; 840 return (ret); 841 } 842 } 843 pio->inprog = 1; 844 TASK_INIT(&pio->tsk, 0, func, context); 845 ret = taskqueue_enqueue(pnfsioq, &pio->tsk); 846 if (ret != 0) 847 pio->inprog = 0; 848 return (ret); 849 } 850 851 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *); 852 853 /* 854 * Called once to initialize data structures... 855 */ 856 static int 857 nfscommon_modevent(module_t mod, int type, void *data) 858 { 859 int error = 0; 860 static int loaded = 0; 861 862 switch (type) { 863 case MOD_LOAD: 864 if (loaded) 865 goto out; 866 newnfs_portinit(); 867 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF); 868 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF); 869 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF); 870 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF); 871 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL, 872 MTX_DEF); 873 mtx_init(&nfsrv_dslock_mtx, "nfs4ds", NULL, MTX_DEF); 874 TAILQ_INIT(&nfsrv_devidhead); 875 newnfs_init(); 876 nfsd_call_nfscommon = nfssvc_nfscommon; 877 loaded = 1; 878 break; 879 880 case MOD_UNLOAD: 881 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != NOTRUNNING || 882 nfs_numnfscbd != 0) { 883 error = EBUSY; 884 break; 885 } 886 887 nfsd_call_nfscommon = NULL; 888 /* Clean out the name<-->id cache. */ 889 nfsrv_cleanusergroup(); 890 /* and get rid of the mutexes */ 891 mtx_destroy(&nfs_nameid_mutex); 892 mtx_destroy(&newnfsd_mtx); 893 mtx_destroy(&nfs_state_mutex); 894 mtx_destroy(&nfs_clstate_mutex); 895 mtx_destroy(&nfs_sockl_mutex); 896 mtx_destroy(&nfs_slock_mutex); 897 mtx_destroy(&nfs_req_mutex); 898 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx); 899 mtx_destroy(&nfsrv_dslock_mtx); 900 loaded = 0; 901 break; 902 default: 903 error = EOPNOTSUPP; 904 break; 905 } 906 907 out: 908 NFSEXITCODE(error); 909 return error; 910 } 911 static moduledata_t nfscommon_mod = { 912 "nfscommon", 913 nfscommon_modevent, 914 NULL, 915 }; 916 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY); 917 918 /* So that loader and kldload(2) can find us, wherever we are.. */ 919 MODULE_VERSION(nfscommon, 1); 920 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1); 921 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);
Cache object: cde92bddac12a1084c51af4a5ca79c63
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