1 /* $NetBSD: nfs_syscalls.c,v 1.41 2000/06/09 00:00:18 fvdl Exp $ */ 2 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95 39 */ 40 41 #include "fs_nfs.h" 42 #include "opt_nfsserver.h" 43 #include "opt_iso.h" 44 #include "opt_inet.h" 45 #include "opt_compat_netbsd.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/file.h> 51 #include <sys/stat.h> 52 #include <sys/vnode.h> 53 #include <sys/mount.h> 54 #include <sys/proc.h> 55 #include <sys/uio.h> 56 #include <sys/malloc.h> 57 #include <sys/buf.h> 58 #include <sys/mbuf.h> 59 #include <sys/socket.h> 60 #include <sys/socketvar.h> 61 #include <sys/signalvar.h> 62 #include <sys/domain.h> 63 #include <sys/protosw.h> 64 #include <sys/namei.h> 65 #include <sys/syslog.h> 66 #include <sys/filedesc.h> 67 #include <sys/kthread.h> 68 69 #include <sys/syscallargs.h> 70 71 #include <netinet/in.h> 72 #include <netinet/tcp.h> 73 #ifdef ISO 74 #include <netiso/iso.h> 75 #endif 76 #include <nfs/xdr_subs.h> 77 #include <nfs/rpcv2.h> 78 #include <nfs/nfsproto.h> 79 #include <nfs/nfs.h> 80 #include <nfs/nfsm_subs.h> 81 #include <nfs/nfsrvcache.h> 82 #include <nfs/nfsmount.h> 83 #include <nfs/nfsnode.h> 84 #include <nfs/nqnfs.h> 85 #include <nfs/nfsrtt.h> 86 #include <nfs/nfs_var.h> 87 88 /* Global defs. */ 89 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *, 90 struct nfssvc_sock *, 91 struct proc *, struct mbuf **)); 92 extern int nfs_numasync; 93 extern time_t nqnfsstarttime; 94 extern int nqsrv_writeslack; 95 extern int nfsrtton; 96 extern struct nfsstats nfsstats; 97 extern int nfsrvw_procrastinate; 98 struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock; 99 #ifdef INET6 100 struct nfssvc_sock *nfs_udp6sock; 101 #endif 102 int nuidhash_max = NFS_MAXUIDHASH; 103 int nfsd_waiting = 0; 104 #ifdef NFSSERVER 105 static int nfs_numnfsd = 0; 106 static int notstarted = 1; 107 static int modify_flag = 0; 108 static struct nfsdrt nfsdrt; 109 #endif 110 111 #define TRUE 1 112 #define FALSE 0 113 114 #ifdef NFS 115 static struct proc *nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 116 int nfs_niothreads = -1; /* == "0, and has never been set" */ 117 #endif 118 119 #ifdef NFSSERVER 120 static void nfsd_rt __P((int, struct nfsrv_descript *, int)); 121 #endif 122 123 /* 124 * NFS server system calls 125 */ 126 127 128 /* 129 * Nfs server pseudo system call for the nfsd's 130 * Based on the flag value it either: 131 * - adds a socket to the selection list 132 * - remains in the kernel as an nfsd 133 * - remains in the kernel as an nfsiod 134 */ 135 int 136 sys_nfssvc(p, v, retval) 137 struct proc *p; 138 void *v; 139 register_t *retval; 140 { 141 struct sys_nfssvc_args /* { 142 syscallarg(int) flag; 143 syscallarg(caddr_t) argp; 144 } */ *uap = v; 145 int error; 146 #ifdef NFS 147 struct nameidata nd; 148 struct nfsmount *nmp; 149 struct nfsd_cargs ncd; 150 #endif 151 #ifdef NFSSERVER 152 struct file *fp; 153 struct mbuf *nam; 154 struct nfsd_args nfsdarg; 155 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 156 struct nfsd *nfsd; 157 struct nfssvc_sock *slp; 158 struct nfsuid *nuidp; 159 #endif 160 161 /* 162 * Must be super user 163 */ 164 error = suser(p->p_ucred, &p->p_acflag); 165 if(error) 166 return (error); 167 while (nfssvc_sockhead_flag & SLP_INIT) { 168 nfssvc_sockhead_flag |= SLP_WANTINIT; 169 (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0); 170 } 171 if (SCARG(uap, flag) & NFSSVC_BIOD) { 172 #if defined(NFS) && defined(COMPAT_14) 173 error = nfssvc_iod(p); 174 #else 175 error = ENOSYS; 176 #endif 177 } else if (SCARG(uap, flag) & NFSSVC_MNTD) { 178 #ifndef NFS 179 error = ENOSYS; 180 #else 181 error = copyin(SCARG(uap, argp), (caddr_t)&ncd, sizeof (ncd)); 182 if (error) 183 return (error); 184 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, 185 ncd.ncd_dirp, p); 186 error = namei(&nd); 187 if (error) 188 return (error); 189 if ((nd.ni_vp->v_flag & VROOT) == 0) 190 error = EINVAL; 191 nmp = VFSTONFS(nd.ni_vp->v_mount); 192 vput(nd.ni_vp); 193 if (error) 194 return (error); 195 if ((nmp->nm_iflag & NFSMNT_MNTD) && 196 (SCARG(uap, flag) & NFSSVC_GOTAUTH) == 0) 197 return (0); 198 nmp->nm_iflag |= NFSMNT_MNTD; 199 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, SCARG(uap, flag), 200 SCARG(uap, argp), p); 201 #endif /* NFS */ 202 } else if (SCARG(uap, flag) & NFSSVC_ADDSOCK) { 203 #ifndef NFSSERVER 204 error = ENOSYS; 205 #else 206 error = copyin(SCARG(uap, argp), (caddr_t)&nfsdarg, 207 sizeof(nfsdarg)); 208 if (error) 209 return (error); 210 /* getsock() will use the descriptor for us */ 211 error = getsock(p->p_fd, nfsdarg.sock, &fp); 212 if (error) 213 return (error); 214 /* 215 * Get the client address for connected sockets. 216 */ 217 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 218 nam = (struct mbuf *)0; 219 else { 220 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen, 221 MT_SONAME); 222 if (error) { 223 FILE_UNUSE(fp, NULL); 224 return (error); 225 } 226 } 227 error = nfssvc_addsock(fp, nam); 228 FILE_UNUSE(fp, NULL); 229 #endif /* !NFSSERVER */ 230 } else { 231 #ifndef NFSSERVER 232 error = ENOSYS; 233 #else 234 error = copyin(SCARG(uap, argp), (caddr_t)nsd, sizeof (*nsd)); 235 if (error) 236 return (error); 237 if ((SCARG(uap, flag) & NFSSVC_AUTHIN) && 238 ((nfsd = nsd->nsd_nfsd)) != NULL && 239 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 240 slp = nfsd->nfsd_slp; 241 242 /* 243 * First check to see if another nfsd has already 244 * added this credential. 245 */ 246 for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first; 247 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 248 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid && 249 (!nfsd->nfsd_nd->nd_nam2 || 250 netaddr_match(NU_NETFAM(nuidp), 251 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 252 break; 253 } 254 if (nuidp) { 255 nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr); 256 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 257 } else { 258 /* 259 * Nope, so we will. 260 */ 261 if (slp->ns_numuids < nuidhash_max) { 262 slp->ns_numuids++; 263 nuidp = (struct nfsuid *) 264 malloc(sizeof (struct nfsuid), M_NFSUID, 265 M_WAITOK); 266 } else 267 nuidp = (struct nfsuid *)0; 268 if ((slp->ns_flag & SLP_VALID) == 0) { 269 if (nuidp) 270 free((caddr_t)nuidp, M_NFSUID); 271 } else { 272 if (nuidp == (struct nfsuid *)0) { 273 nuidp = slp->ns_uidlruhead.tqh_first; 274 LIST_REMOVE(nuidp, nu_hash); 275 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 276 nu_lru); 277 if (nuidp->nu_flag & NU_NAM) 278 m_freem(nuidp->nu_nam); 279 } 280 nuidp->nu_flag = 0; 281 nuidp->nu_cr = nsd->nsd_cr; 282 if (nuidp->nu_cr.cr_ngroups > NGROUPS) 283 nuidp->nu_cr.cr_ngroups = NGROUPS; 284 nuidp->nu_cr.cr_ref = 1; 285 nuidp->nu_timestamp = nsd->nsd_timestamp; 286 nuidp->nu_expire = time.tv_sec + nsd->nsd_ttl; 287 /* 288 * and save the session key in nu_key. 289 */ 290 memcpy(nuidp->nu_key, nsd->nsd_key, 291 sizeof(nsd->nsd_key)); 292 if (nfsd->nfsd_nd->nd_nam2) { 293 struct sockaddr_in *saddr; 294 295 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 296 struct sockaddr_in *); 297 switch (saddr->sin_family) { 298 case AF_INET: 299 nuidp->nu_flag |= NU_INETADDR; 300 nuidp->nu_inetaddr = 301 saddr->sin_addr.s_addr; 302 break; 303 case AF_ISO: 304 default: 305 nuidp->nu_flag |= NU_NAM; 306 nuidp->nu_nam = m_copym( 307 nfsd->nfsd_nd->nd_nam2, 0, 308 M_COPYALL, M_WAIT); 309 break; 310 }; 311 } 312 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 313 nu_lru); 314 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 315 nuidp, nu_hash); 316 nfsrv_setcred(&nuidp->nu_cr, 317 &nfsd->nfsd_nd->nd_cr); 318 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 319 } 320 } 321 } 322 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 323 (nfsd = nsd->nsd_nfsd)) 324 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 325 error = nfssvc_nfsd(nsd, SCARG(uap, argp), p); 326 #endif /* !NFSSERVER */ 327 } 328 if (error == EINTR || error == ERESTART) 329 error = 0; 330 return (error); 331 } 332 333 #ifdef NFSSERVER 334 /* 335 * Adds a socket to the list for servicing by nfsds. 336 */ 337 int 338 nfssvc_addsock(fp, mynam) 339 struct file *fp; 340 struct mbuf *mynam; 341 { 342 struct mbuf *m; 343 int siz; 344 struct nfssvc_sock *slp; 345 struct socket *so; 346 struct nfssvc_sock *tslp; 347 int error, s; 348 349 so = (struct socket *)fp->f_data; 350 tslp = (struct nfssvc_sock *)0; 351 /* 352 * Add it to the list, as required. 353 */ 354 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 355 #ifdef INET6 356 if (so->so_proto->pr_domain->dom_family == AF_INET6) 357 tslp = nfs_udp6sock; 358 else 359 #endif 360 tslp = nfs_udpsock; 361 if (tslp->ns_flag & SLP_VALID) { 362 m_freem(mynam); 363 return (EPERM); 364 } 365 #ifdef ISO 366 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 367 tslp = nfs_cltpsock; 368 if (tslp->ns_flag & SLP_VALID) { 369 m_freem(mynam); 370 return (EPERM); 371 } 372 #endif /* ISO */ 373 } 374 if (so->so_type == SOCK_STREAM) 375 siz = NFS_MAXPACKET + sizeof (u_long); 376 else 377 siz = NFS_MAXPACKET; 378 error = soreserve(so, siz, siz); 379 if (error) { 380 m_freem(mynam); 381 return (error); 382 } 383 384 /* 385 * Set protocol specific options { for now TCP only } and 386 * reserve some space. For datagram sockets, this can get called 387 * repeatedly for the same socket, but that isn't harmful. 388 */ 389 if (so->so_type == SOCK_STREAM) { 390 MGET(m, M_WAIT, MT_SOOPTS); 391 *mtod(m, int32_t *) = 1; 392 m->m_len = sizeof(int32_t); 393 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m); 394 } 395 if ((so->so_proto->pr_domain->dom_family == AF_INET 396 #ifdef INET6 397 || so->so_proto->pr_domain->dom_family == AF_INET6 398 #endif 399 ) && 400 so->so_proto->pr_protocol == IPPROTO_TCP) { 401 MGET(m, M_WAIT, MT_SOOPTS); 402 *mtod(m, int32_t *) = 1; 403 m->m_len = sizeof(int32_t); 404 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m); 405 } 406 so->so_rcv.sb_flags &= ~SB_NOINTR; 407 so->so_rcv.sb_timeo = 0; 408 so->so_snd.sb_flags &= ~SB_NOINTR; 409 so->so_snd.sb_timeo = 0; 410 if (tslp) 411 slp = tslp; 412 else { 413 slp = (struct nfssvc_sock *) 414 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 415 memset((caddr_t)slp, 0, sizeof (struct nfssvc_sock)); 416 TAILQ_INIT(&slp->ns_uidlruhead); 417 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 418 } 419 slp->ns_so = so; 420 slp->ns_nam = mynam; 421 fp->f_count++; 422 slp->ns_fp = fp; 423 s = splsoftnet(); 424 so->so_upcallarg = (caddr_t)slp; 425 so->so_upcall = nfsrv_rcv; 426 so->so_rcv.sb_flags |= SB_UPCALL; 427 slp->ns_flag = (SLP_VALID | SLP_NEEDQ); 428 nfsrv_wakenfsd(slp); 429 splx(s); 430 return (0); 431 } 432 433 /* 434 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 435 * until it is killed by a signal. 436 */ 437 int 438 nfssvc_nfsd(nsd, argp, p) 439 struct nfsd_srvargs *nsd; 440 caddr_t argp; 441 struct proc *p; 442 { 443 struct mbuf *m; 444 int siz; 445 struct nfssvc_sock *slp; 446 struct socket *so; 447 int *solockp; 448 struct nfsd *nfsd = nsd->nsd_nfsd; 449 struct nfsrv_descript *nd = NULL; 450 struct mbuf *mreq; 451 int error = 0, cacherep, s, sotype, writes_todo; 452 u_quad_t cur_usec; 453 454 #ifndef nolint 455 cacherep = RC_DOIT; 456 writes_todo = 0; 457 #endif 458 s = splsoftnet(); 459 if (nfsd == (struct nfsd *)0) { 460 nsd->nsd_nfsd = nfsd = (struct nfsd *) 461 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 462 memset((caddr_t)nfsd, 0, sizeof (struct nfsd)); 463 nfsd->nfsd_procp = p; 464 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 465 nfs_numnfsd++; 466 } 467 p->p_holdcnt++; 468 /* 469 * Loop getting rpc requests until SIGKILL. 470 */ 471 for (;;) { 472 if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) { 473 while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 474 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 475 nfsd->nfsd_flag |= NFSD_WAITING; 476 nfsd_waiting++; 477 error = tsleep((caddr_t)nfsd, PSOCK | PCATCH, 478 "nfsd", 0); 479 nfsd_waiting--; 480 if (error) 481 goto done; 482 } 483 if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 484 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 485 for (slp = nfssvc_sockhead.tqh_first; slp != 0; 486 slp = slp->ns_chain.tqe_next) { 487 if ((slp->ns_flag & (SLP_VALID | SLP_DOREC)) 488 == (SLP_VALID | SLP_DOREC)) { 489 slp->ns_flag &= ~SLP_DOREC; 490 slp->ns_sref++; 491 nfsd->nfsd_slp = slp; 492 break; 493 } 494 } 495 if (slp == 0) 496 nfsd_head_flag &= ~NFSD_CHECKSLP; 497 } 498 if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0) 499 continue; 500 if (slp->ns_flag & SLP_VALID) { 501 if (slp->ns_flag & SLP_DISCONN) 502 nfsrv_zapsock(slp); 503 else if (slp->ns_flag & SLP_NEEDQ) { 504 slp->ns_flag &= ~SLP_NEEDQ; 505 (void) nfs_sndlock(&slp->ns_solock, 506 (struct nfsreq *)0); 507 nfsrv_rcv(slp->ns_so, (caddr_t)slp, 508 M_WAIT); 509 nfs_sndunlock(&slp->ns_solock); 510 } 511 error = nfsrv_dorec(slp, nfsd, &nd); 512 cur_usec = (u_quad_t)time.tv_sec * 1000000 + 513 (u_quad_t)time.tv_usec; 514 if (error && slp->ns_tq.lh_first && 515 slp->ns_tq.lh_first->nd_time <= cur_usec) { 516 error = 0; 517 cacherep = RC_DOIT; 518 writes_todo = 1; 519 } else 520 writes_todo = 0; 521 nfsd->nfsd_flag |= NFSD_REQINPROG; 522 } 523 } else { 524 error = 0; 525 slp = nfsd->nfsd_slp; 526 } 527 if (error || (slp->ns_flag & SLP_VALID) == 0) { 528 if (nd) { 529 free((caddr_t)nd, M_NFSRVDESC); 530 nd = NULL; 531 } 532 nfsd->nfsd_slp = (struct nfssvc_sock *)0; 533 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 534 nfsrv_slpderef(slp); 535 continue; 536 } 537 splx(s); 538 so = slp->ns_so; 539 sotype = so->so_type; 540 if (so->so_proto->pr_flags & PR_CONNREQUIRED) 541 solockp = &slp->ns_solock; 542 else 543 solockp = (int *)0; 544 if (nd) { 545 nd->nd_starttime = time; 546 if (nd->nd_nam2) 547 nd->nd_nam = nd->nd_nam2; 548 else 549 nd->nd_nam = slp->ns_nam; 550 551 /* 552 * Check to see if authorization is needed. 553 */ 554 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 555 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 556 nsd->nsd_haddr = mtod(nd->nd_nam, 557 struct sockaddr_in *)->sin_addr.s_addr; 558 nsd->nsd_authlen = nfsd->nfsd_authlen; 559 nsd->nsd_verflen = nfsd->nfsd_verflen; 560 if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr, 561 nfsd->nfsd_authlen) && 562 !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr, 563 nfsd->nfsd_verflen) && 564 !copyout((caddr_t)nsd, argp, sizeof (*nsd))) { 565 p->p_holdcnt--; 566 return (ENEEDAUTH); 567 } 568 cacherep = RC_DROPIT; 569 } else 570 cacherep = nfsrv_getcache(nd, slp, &mreq); 571 572 /* 573 * Check for just starting up for NQNFS and send 574 * fake "try again later" replies to the NQNFS clients. 575 */ 576 if (notstarted && nqnfsstarttime <= time.tv_sec) { 577 if (modify_flag) { 578 nqnfsstarttime = time.tv_sec + nqsrv_writeslack; 579 modify_flag = 0; 580 } else 581 notstarted = 0; 582 } 583 if (notstarted) { 584 if ((nd->nd_flag & ND_NQNFS) == 0) 585 cacherep = RC_DROPIT; 586 else if (nd->nd_procnum != NFSPROC_WRITE) { 587 nd->nd_procnum = NFSPROC_NOOP; 588 nd->nd_repstat = NQNFS_TRYLATER; 589 cacherep = RC_DOIT; 590 } else 591 modify_flag = 1; 592 } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 593 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 594 nd->nd_procnum = NFSPROC_NOOP; 595 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 596 cacherep = RC_DOIT; 597 } 598 } 599 600 /* 601 * Loop to get all the write rpc relies that have been 602 * gathered together. 603 */ 604 do { 605 #ifdef DIAGNOSTIC 606 int lockcount; 607 #endif 608 switch (cacherep) { 609 case RC_DOIT: 610 #ifdef DIAGNOSTIC 611 /* 612 * NFS server procs should neither release 613 * locks already held, nor leave things 614 * locked. Catch this sooner, rather than 615 * later (when we try to relock something we 616 * already have locked). Careful inspection 617 * of the failing routine usually turns up the 618 * lock leak.. once we know what it is.. 619 */ 620 lockcount = p->p_locks; 621 #endif 622 if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE && 623 nfsrvw_procrastinate > 0 && !notstarted)) 624 error = nfsrv_writegather(&nd, slp, 625 nfsd->nfsd_procp, &mreq); 626 else 627 error = (*(nfsrv3_procs[nd->nd_procnum]))(nd, 628 slp, nfsd->nfsd_procp, &mreq); 629 #ifdef DIAGNOSTIC 630 if (p->p_locks != lockcount) { 631 /* 632 * If you see this panic, audit 633 * nfsrv3_procs[nd->nd_procnum] for vnode 634 * locking errors (usually, it's due to 635 * forgetting to vput() something). 636 */ 637 panic("nfsd: locking botch in op %d", 638 nd ? nd->nd_procnum : -1); 639 } 640 #endif 641 if (mreq == NULL) 642 break; 643 if (error) { 644 if (nd->nd_procnum != NQNFSPROC_VACATED) 645 nfsstats.srv_errs++; 646 nfsrv_updatecache(nd, FALSE, mreq); 647 if (nd->nd_nam2) 648 m_freem(nd->nd_nam2); 649 break; 650 } 651 nfsstats.srvrpccnt[nd->nd_procnum]++; 652 nfsrv_updatecache(nd, TRUE, mreq); 653 nd->nd_mrep = (struct mbuf *)0; 654 case RC_REPLY: 655 m = mreq; 656 siz = 0; 657 while (m) { 658 siz += m->m_len; 659 m = m->m_next; 660 } 661 if (siz <= 0 || siz > NFS_MAXPACKET) { 662 printf("mbuf siz=%d\n",siz); 663 panic("Bad nfs svc reply"); 664 } 665 m = mreq; 666 m->m_pkthdr.len = siz; 667 m->m_pkthdr.rcvif = (struct ifnet *)0; 668 /* 669 * For stream protocols, prepend a Sun RPC 670 * Record Mark. 671 */ 672 if (sotype == SOCK_STREAM) { 673 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 674 *mtod(m, u_int32_t *) = htonl(0x80000000 | siz); 675 } 676 if (solockp) 677 (void) nfs_sndlock(solockp, (struct nfsreq *)0); 678 if (slp->ns_flag & SLP_VALID) 679 error = nfs_send(so, nd->nd_nam2, m, NULL); 680 else { 681 error = EPIPE; 682 m_freem(m); 683 } 684 if (nfsrtton) 685 nfsd_rt(sotype, nd, cacherep); 686 if (nd->nd_nam2) 687 MFREE(nd->nd_nam2, m); 688 if (nd->nd_mrep) 689 m_freem(nd->nd_mrep); 690 if (error == EPIPE) 691 nfsrv_zapsock(slp); 692 if (solockp) 693 nfs_sndunlock(solockp); 694 if (error == EINTR || error == ERESTART) { 695 free((caddr_t)nd, M_NFSRVDESC); 696 nfsrv_slpderef(slp); 697 s = splsoftnet(); 698 goto done; 699 } 700 break; 701 case RC_DROPIT: 702 if (nfsrtton) 703 nfsd_rt(sotype, nd, cacherep); 704 m_freem(nd->nd_mrep); 705 m_freem(nd->nd_nam2); 706 break; 707 }; 708 if (nd) { 709 FREE((caddr_t)nd, M_NFSRVDESC); 710 nd = NULL; 711 } 712 713 /* 714 * Check to see if there are outstanding writes that 715 * need to be serviced. 716 */ 717 cur_usec = (u_quad_t)time.tv_sec * 1000000 + 718 (u_quad_t)time.tv_usec; 719 s = splsoftclock(); 720 if (slp->ns_tq.lh_first && 721 slp->ns_tq.lh_first->nd_time <= cur_usec) { 722 cacherep = RC_DOIT; 723 writes_todo = 1; 724 } else 725 writes_todo = 0; 726 splx(s); 727 } while (writes_todo); 728 s = splsoftnet(); 729 if (nfsrv_dorec(slp, nfsd, &nd)) { 730 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 731 nfsd->nfsd_slp = NULL; 732 nfsrv_slpderef(slp); 733 } 734 } 735 done: 736 p->p_holdcnt--; 737 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 738 splx(s); 739 free((caddr_t)nfsd, M_NFSD); 740 nsd->nsd_nfsd = (struct nfsd *)0; 741 if (--nfs_numnfsd == 0) 742 nfsrv_init(TRUE); /* Reinitialize everything */ 743 return (error); 744 } 745 746 /* 747 * Shut down a socket associated with an nfssvc_sock structure. 748 * Should be called with the send lock set, if required. 749 * The trick here is to increment the sref at the start, so that the nfsds 750 * will stop using it and clear ns_flag at the end so that it will not be 751 * reassigned during cleanup. 752 */ 753 void 754 nfsrv_zapsock(slp) 755 struct nfssvc_sock *slp; 756 { 757 struct nfsuid *nuidp, *nnuidp; 758 struct nfsrv_descript *nwp, *nnwp; 759 struct socket *so; 760 struct file *fp; 761 struct mbuf *m; 762 int s; 763 764 slp->ns_flag &= ~SLP_ALLFLAGS; 765 fp = slp->ns_fp; 766 if (fp) { 767 FILE_USE(fp); 768 slp->ns_fp = (struct file *)0; 769 so = slp->ns_so; 770 so->so_upcall = NULL; 771 so->so_upcallarg = NULL; 772 so->so_rcv.sb_flags &= ~SB_UPCALL; 773 soshutdown(so, 2); 774 closef(fp, (struct proc *)0); 775 if (slp->ns_nam) 776 MFREE(slp->ns_nam, m); 777 m_freem(slp->ns_raw); 778 m_freem(slp->ns_rec); 779 for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0; 780 nuidp = nnuidp) { 781 nnuidp = nuidp->nu_lru.tqe_next; 782 LIST_REMOVE(nuidp, nu_hash); 783 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 784 if (nuidp->nu_flag & NU_NAM) 785 m_freem(nuidp->nu_nam); 786 free((caddr_t)nuidp, M_NFSUID); 787 } 788 s = splsoftclock(); 789 for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) { 790 nnwp = nwp->nd_tq.le_next; 791 LIST_REMOVE(nwp, nd_tq); 792 free((caddr_t)nwp, M_NFSRVDESC); 793 } 794 LIST_INIT(&slp->ns_tq); 795 splx(s); 796 } 797 } 798 799 /* 800 * Derefence a server socket structure. If it has no more references and 801 * is no longer valid, you can throw it away. 802 */ 803 void 804 nfsrv_slpderef(slp) 805 struct nfssvc_sock *slp; 806 { 807 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) { 808 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 809 free((caddr_t)slp, M_NFSSVC); 810 } 811 } 812 813 /* 814 * Initialize the data structures for the server. 815 * Handshake with any new nfsds starting up to avoid any chance of 816 * corruption. 817 */ 818 void 819 nfsrv_init(terminating) 820 int terminating; 821 { 822 struct nfssvc_sock *slp, *nslp; 823 824 if (nfssvc_sockhead_flag & SLP_INIT) 825 panic("nfsd init"); 826 nfssvc_sockhead_flag |= SLP_INIT; 827 if (terminating) { 828 for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) { 829 nslp = slp->ns_chain.tqe_next; 830 if (slp->ns_flag & SLP_VALID) 831 nfsrv_zapsock(slp); 832 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 833 free((caddr_t)slp, M_NFSSVC); 834 } 835 nfsrv_cleancache(); /* And clear out server cache */ 836 } else 837 nfs_pub.np_valid = 0; 838 839 TAILQ_INIT(&nfssvc_sockhead); 840 nfssvc_sockhead_flag &= ~SLP_INIT; 841 if (nfssvc_sockhead_flag & SLP_WANTINIT) { 842 nfssvc_sockhead_flag &= ~SLP_WANTINIT; 843 wakeup((caddr_t)&nfssvc_sockhead); 844 } 845 846 TAILQ_INIT(&nfsd_head); 847 nfsd_head_flag &= ~NFSD_CHECKSLP; 848 849 nfs_udpsock = (struct nfssvc_sock *) 850 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 851 memset((caddr_t)nfs_udpsock, 0, sizeof (struct nfssvc_sock)); 852 TAILQ_INIT(&nfs_udpsock->ns_uidlruhead); 853 TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain); 854 855 #ifdef INET6 856 nfs_udp6sock = (struct nfssvc_sock *) 857 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 858 memset((caddr_t)nfs_udp6sock, 0, sizeof (struct nfssvc_sock)); 859 TAILQ_INIT(&nfs_udp6sock->ns_uidlruhead); 860 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_udp6sock, ns_chain); 861 #endif 862 863 nfs_cltpsock = (struct nfssvc_sock *) 864 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 865 memset((caddr_t)nfs_cltpsock, 0, sizeof (struct nfssvc_sock)); 866 TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead); 867 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain); 868 } 869 870 /* 871 * Add entries to the server monitor log. 872 */ 873 static void 874 nfsd_rt(sotype, nd, cacherep) 875 int sotype; 876 struct nfsrv_descript *nd; 877 int cacherep; 878 { 879 struct drt *rt; 880 881 rt = &nfsdrt.drt[nfsdrt.pos]; 882 if (cacherep == RC_DOIT) 883 rt->flag = 0; 884 else if (cacherep == RC_REPLY) 885 rt->flag = DRT_CACHEREPLY; 886 else 887 rt->flag = DRT_CACHEDROP; 888 if (sotype == SOCK_STREAM) 889 rt->flag |= DRT_TCP; 890 if (nd->nd_flag & ND_NQNFS) 891 rt->flag |= DRT_NQNFS; 892 else if (nd->nd_flag & ND_NFSV3) 893 rt->flag |= DRT_NFSV3; 894 rt->proc = nd->nd_procnum; 895 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 896 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 897 else 898 rt->ipadr = INADDR_ANY; 899 rt->resptime = ((time.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 900 (time.tv_usec - nd->nd_starttime.tv_usec); 901 rt->tstamp = time; 902 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 903 } 904 #endif /* NFSSERVER */ 905 906 #ifdef NFS 907 908 int nfs_defect = 0; 909 /* 910 * Asynchronous I/O threads for client nfs. 911 * They do read-ahead and write-behind operations on the block I/O cache. 912 * Never returns unless it fails or gets killed. 913 */ 914 915 int 916 nfssvc_iod(p) 917 struct proc *p; 918 { 919 struct buf *bp; 920 int i, myiod; 921 struct nfsmount *nmp; 922 int error = 0; 923 924 /* 925 * Assign my position or return error if too many already running 926 */ 927 myiod = -1; 928 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 929 if (nfs_asyncdaemon[i] == NULL) { 930 myiod = i; 931 break; 932 } 933 if (myiod == -1) 934 return (EBUSY); 935 nfs_asyncdaemon[myiod] = p; 936 nfs_numasync++; 937 p->p_holdcnt++; 938 /* 939 * Just loop around doin our stuff until SIGKILL 940 */ 941 for (;;) { 942 while (((nmp = nfs_iodmount[myiod]) == NULL 943 || nmp->nm_bufq.tqh_first == NULL) 944 && error == 0) { 945 if (nmp) 946 nmp->nm_bufqiods--; 947 nfs_iodwant[myiod] = p; 948 nfs_iodmount[myiod] = NULL; 949 error = tsleep((caddr_t)&nfs_iodwant[myiod], 950 PWAIT | PCATCH, "nfsidl", 0); 951 } 952 if (error) { 953 if (nmp) 954 nmp->nm_bufqiods--; 955 nfs_iodmount[myiod] = NULL; 956 break; 957 } 958 while ((bp = nmp->nm_bufq.tqh_first) != NULL) { 959 /* Take one off the front of the list */ 960 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 961 nmp->nm_bufqlen--; 962 if (nmp->nm_bufqwant && nmp->nm_bufqlen < 2 * nfs_numasync) { 963 nmp->nm_bufqwant = FALSE; 964 wakeup(&nmp->nm_bufq); 965 } 966 if (bp->b_flags & B_READ) 967 (void) nfs_doio(bp, bp->b_rcred, (struct proc *)0); 968 else 969 (void) nfs_doio(bp, bp->b_wcred, (struct proc *)0); 970 /* 971 * If there are more than one iod on this mount, then defect 972 * so that the iods can be shared out fairly between the mounts 973 */ 974 if (nfs_defect && nmp->nm_bufqiods > 1) { 975 nfs_iodmount[myiod] = NULL; 976 nmp->nm_bufqiods--; 977 break; 978 } 979 } 980 } 981 p->p_holdcnt--; 982 nfs_asyncdaemon[myiod] = NULL; 983 nfs_numasync--; 984 985 return (error); 986 } 987 988 void 989 start_nfsio(arg) 990 void *arg; 991 { 992 nfssvc_iod(curproc); 993 994 kthread_exit(0); 995 } 996 997 void 998 nfs_getset_niothreads(set) 999 int set; 1000 { 1001 int i, have, start; 1002 1003 for (have = 0, i = 0; i < NFS_MAXASYNCDAEMON; i++) 1004 if (nfs_asyncdaemon[i] != NULL) 1005 have++; 1006 1007 if (set) { 1008 /* clamp to sane range */ 1009 nfs_niothreads = max(0, min(nfs_niothreads, NFS_MAXASYNCDAEMON)); 1010 1011 start = nfs_niothreads - have; 1012 1013 while (start > 0) { 1014 kthread_create1(start_nfsio, NULL, NULL, "nfsio"); 1015 start--; 1016 } 1017 1018 for (i = 0; (start < 0) && (i < NFS_MAXASYNCDAEMON); i++) 1019 if (nfs_asyncdaemon[i] != NULL) { 1020 psignal(nfs_asyncdaemon[i], SIGKILL); 1021 start++; 1022 } 1023 } else { 1024 if (nfs_niothreads >= 0) 1025 nfs_niothreads = have; 1026 } 1027 } 1028 1029 /* 1030 * Get an authorization string for the uid by having the mount_nfs sitting 1031 * on this mount point porpous out of the kernel and do it. 1032 */ 1033 int 1034 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1035 struct nfsmount *nmp; 1036 struct nfsreq *rep; 1037 struct ucred *cred; 1038 char **auth_str; 1039 int *auth_len; 1040 char *verf_str; 1041 int *verf_len; 1042 NFSKERBKEY_T key; /* return session key */ 1043 { 1044 int error = 0; 1045 1046 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1047 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1048 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK, 1049 "nfsauth1", 2 * hz); 1050 error = nfs_sigintr(nmp, rep, rep->r_procp); 1051 if (error) { 1052 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1053 return (error); 1054 } 1055 } 1056 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1057 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1058 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1059 nmp->nm_verfstr = verf_str; 1060 nmp->nm_verflen = *verf_len; 1061 nmp->nm_authuid = cred->cr_uid; 1062 wakeup((caddr_t)&nmp->nm_authstr); 1063 1064 /* 1065 * And wait for mount_nfs to do its stuff. 1066 */ 1067 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1068 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK, 1069 "nfsauth2", 2 * hz); 1070 error = nfs_sigintr(nmp, rep, rep->r_procp); 1071 } 1072 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1073 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1074 error = EAUTH; 1075 } 1076 if (error) 1077 free((caddr_t)*auth_str, M_TEMP); 1078 else { 1079 *auth_len = nmp->nm_authlen; 1080 *verf_len = nmp->nm_verflen; 1081 memcpy((caddr_t)key, (caddr_t)nmp->nm_key, sizeof (key)); 1082 } 1083 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1084 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1085 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1086 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1087 wakeup((caddr_t)&nmp->nm_authtype); 1088 } 1089 return (error); 1090 } 1091 1092 /* 1093 * Get a nickname authenticator and verifier. 1094 */ 1095 int 1096 nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len) 1097 struct nfsmount *nmp; 1098 struct ucred *cred; 1099 char **auth_str; 1100 int *auth_len; 1101 char *verf_str; 1102 int verf_len; 1103 { 1104 struct nfsuid *nuidp; 1105 u_int32_t *nickp, *verfp; 1106 struct timeval ktvin, ktvout; 1107 1108 #ifdef DIAGNOSTIC 1109 if (verf_len < (4 * NFSX_UNSIGNED)) 1110 panic("nfs_getnickauth verf too small"); 1111 #endif 1112 for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first; 1113 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 1114 if (nuidp->nu_cr.cr_uid == cred->cr_uid) 1115 break; 1116 } 1117 if (!nuidp || nuidp->nu_expire < time.tv_sec) 1118 return (EACCES); 1119 1120 /* 1121 * Move to the end of the lru list (end of lru == most recently used). 1122 */ 1123 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1124 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1125 1126 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1127 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1128 *nickp = txdr_unsigned(nuidp->nu_nickname); 1129 *auth_str = (char *)nickp; 1130 *auth_len = 2 * NFSX_UNSIGNED; 1131 1132 /* 1133 * Now we must encrypt the verifier and package it up. 1134 */ 1135 verfp = (u_int32_t *)verf_str; 1136 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1137 if (time.tv_sec > nuidp->nu_timestamp.tv_sec || 1138 (time.tv_sec == nuidp->nu_timestamp.tv_sec && 1139 time.tv_usec > nuidp->nu_timestamp.tv_usec)) 1140 nuidp->nu_timestamp = time; 1141 else 1142 nuidp->nu_timestamp.tv_usec++; 1143 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1144 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1145 1146 /* 1147 * Now encrypt the timestamp verifier in ecb mode using the session 1148 * key. 1149 */ 1150 #ifdef NFSKERB 1151 XXX 1152 #endif 1153 1154 *verfp++ = ktvout.tv_sec; 1155 *verfp++ = ktvout.tv_usec; 1156 *verfp = 0; 1157 return (0); 1158 } 1159 1160 /* 1161 * Save the current nickname in a hash list entry on the mount point. 1162 */ 1163 int 1164 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1165 struct nfsmount *nmp; 1166 struct ucred *cred; 1167 int len; 1168 NFSKERBKEY_T key; 1169 struct mbuf **mdp; 1170 char **dposp; 1171 struct mbuf *mrep; 1172 { 1173 struct nfsuid *nuidp; 1174 u_int32_t *tl; 1175 int32_t t1; 1176 struct mbuf *md = *mdp; 1177 struct timeval ktvin, ktvout; 1178 u_int32_t nick; 1179 char *dpos = *dposp, *cp2; 1180 int deltasec, error = 0; 1181 1182 if (len == (3 * NFSX_UNSIGNED)) { 1183 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1184 ktvin.tv_sec = *tl++; 1185 ktvin.tv_usec = *tl++; 1186 nick = fxdr_unsigned(u_int32_t, *tl); 1187 1188 /* 1189 * Decrypt the timestamp in ecb mode. 1190 */ 1191 #ifdef NFSKERB 1192 XXX 1193 #endif 1194 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1195 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1196 deltasec = time.tv_sec - ktvout.tv_sec; 1197 if (deltasec < 0) 1198 deltasec = -deltasec; 1199 /* 1200 * If ok, add it to the hash list for the mount point. 1201 */ 1202 if (deltasec <= NFS_KERBCLOCKSKEW) { 1203 if (nmp->nm_numuids < nuidhash_max) { 1204 nmp->nm_numuids++; 1205 nuidp = (struct nfsuid *) 1206 malloc(sizeof (struct nfsuid), M_NFSUID, 1207 M_WAITOK); 1208 } else { 1209 nuidp = nmp->nm_uidlruhead.tqh_first; 1210 LIST_REMOVE(nuidp, nu_hash); 1211 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1212 nu_lru); 1213 } 1214 nuidp->nu_flag = 0; 1215 nuidp->nu_cr.cr_uid = cred->cr_uid; 1216 nuidp->nu_expire = time.tv_sec + NFS_KERBTTL; 1217 nuidp->nu_timestamp = ktvout; 1218 nuidp->nu_nickname = nick; 1219 memcpy(nuidp->nu_key, key, sizeof (key)); 1220 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1221 nu_lru); 1222 LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid), 1223 nuidp, nu_hash); 1224 } 1225 } else 1226 nfsm_adv(nfsm_rndup(len)); 1227 nfsmout: 1228 *mdp = md; 1229 *dposp = dpos; 1230 return (error); 1231 } 1232 #endif /* NFS */ 1233