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sys/nfs/nfs_syscalls.c
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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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95 37 * $FreeBSD$ 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/sysproto.h> 43 #include <sys/kernel.h> 44 #include <sys/sysctl.h> 45 #include <sys/file.h> 46 #include <sys/filedesc.h> 47 #include <sys/vnode.h> 48 #include <sys/malloc.h> 49 #include <sys/mount.h> 50 #include <sys/proc.h> 51 #include <sys/buf.h> 52 #include <sys/mbuf.h> 53 #include <sys/socket.h> 54 #include <sys/socketvar.h> 55 #include <sys/domain.h> 56 #include <sys/protosw.h> 57 #include <sys/namei.h> 58 59 #include <netinet/in.h> 60 #include <netinet/tcp.h> 61 #ifdef ISO 62 #include <netiso/iso.h> 63 #endif 64 #include <nfs/xdr_subs.h> 65 #include <nfs/rpcv2.h> 66 #include <nfs/nfsproto.h> 67 #include <nfs/nfs.h> 68 #include <nfs/nfsm_subs.h> 69 #include <nfs/nfsrvcache.h> 70 #include <nfs/nfsmount.h> 71 #include <nfs/nfsnode.h> 72 #include <nfs/nqnfs.h> 73 #include <nfs/nfsrtt.h> 74 75 static MALLOC_DEFINE(M_NFSSVC, "NFS srvsock", "Nfs server structure"); 76 77 /* Global defs. */ 78 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *nd, 79 struct nfssvc_sock *slp, 80 struct proc *procp, 81 struct mbuf **mreqp)); 82 extern int nfs_numasync; 83 extern time_t nqnfsstarttime; 84 extern int nqsrv_writeslack; 85 extern int nfsrtton; 86 extern struct nfsstats nfsstats; 87 extern int nfsrvw_procrastinate; 88 extern int nfsrvw_procrastinate_v3; 89 struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock; 90 static int nuidhash_max = NFS_MAXUIDHASH; 91 92 static void nfsrv_zapsock __P((struct nfssvc_sock *slp)); 93 static int nfssvc_iod __P((struct proc *)); 94 95 #define TRUE 1 96 #define FALSE 0 97 98 static int nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 99 100 #ifndef NFS_NOSERVER 101 int nfsd_waiting = 0; 102 static struct nfsdrt nfsdrt; 103 static int nfs_numnfsd = 0; 104 static int notstarted = 1; 105 static int modify_flag = 0; 106 static void nfsd_rt __P((int sotype, struct nfsrv_descript *nd, 107 int cacherep)); 108 static int nfssvc_addsock __P((struct file *, struct sockaddr *, 109 struct proc *)); 110 static int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *)); 111 112 static int nfs_privport = 0; 113 SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, ""); 114 SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, ""); 115 SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, ""); 116 117 /* 118 * NFS server system calls 119 * getfh() lives here too, but maybe should move to kern/vfs_syscalls.c 120 */ 121 122 /* 123 * Get file handle system call 124 */ 125 #ifndef _SYS_SYSPROTO_H_ 126 struct getfh_args { 127 char *fname; 128 fhandle_t *fhp; 129 }; 130 #endif 131 int 132 getfh(p, uap) 133 struct proc *p; 134 register struct getfh_args *uap; 135 { 136 register struct vnode *vp; 137 fhandle_t fh; 138 int error; 139 struct nameidata nd; 140 141 /* 142 * Must be super user 143 */ 144 error = suser(p->p_ucred, &p->p_acflag); 145 if(error) 146 return (error); 147 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); 148 error = namei(&nd); 149 if (error) 150 return (error); 151 vp = nd.ni_vp; 152 bzero((caddr_t)&fh, sizeof(fh)); 153 fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid; 154 error = VFS_VPTOFH(vp, &fh.fh_fid); 155 vput(vp); 156 if (error) 157 return (error); 158 error = copyout((caddr_t)&fh, (caddr_t)uap->fhp, sizeof (fh)); 159 return (error); 160 } 161 162 #endif /* NFS_NOSERVER */ 163 /* 164 * Nfs server psuedo system call for the nfsd's 165 * Based on the flag value it either: 166 * - adds a socket to the selection list 167 * - remains in the kernel as an nfsd 168 * - remains in the kernel as an nfsiod 169 */ 170 #ifndef _SYS_SYSPROTO_H_ 171 struct nfssvc_args { 172 int flag; 173 caddr_t argp; 174 }; 175 #endif 176 int 177 nfssvc(p, uap) 178 struct proc *p; 179 register struct nfssvc_args *uap; 180 { 181 #ifndef NFS_NOSERVER 182 struct nameidata nd; 183 struct file *fp; 184 struct sockaddr *nam; 185 struct nfsd_args nfsdarg; 186 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 187 struct nfsd_cargs ncd; 188 struct nfsd *nfsd; 189 struct nfssvc_sock *slp; 190 struct nfsuid *nuidp; 191 struct nfsmount *nmp; 192 #endif /* NFS_NOSERVER */ 193 int error; 194 195 /* 196 * Must be super user 197 */ 198 error = suser(p->p_ucred, &p->p_acflag); 199 if(error) 200 return (error); 201 while (nfssvc_sockhead_flag & SLP_INIT) { 202 nfssvc_sockhead_flag |= SLP_WANTINIT; 203 (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0); 204 } 205 if (uap->flag & NFSSVC_BIOD) 206 error = nfssvc_iod(p); 207 #ifdef NFS_NOSERVER 208 else 209 error = ENXIO; 210 #else /* !NFS_NOSERVER */ 211 else if (uap->flag & NFSSVC_MNTD) { 212 error = copyin(uap->argp, (caddr_t)&ncd, sizeof (ncd)); 213 if (error) 214 return (error); 215 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, 216 ncd.ncd_dirp, p); 217 error = namei(&nd); 218 if (error) 219 return (error); 220 if ((nd.ni_vp->v_flag & VROOT) == 0) 221 error = EINVAL; 222 nmp = VFSTONFS(nd.ni_vp->v_mount); 223 vput(nd.ni_vp); 224 if (error) 225 return (error); 226 if ((nmp->nm_state & NFSSTA_MNTD) && 227 (uap->flag & NFSSVC_GOTAUTH) == 0) 228 return (0); 229 nmp->nm_state |= NFSSTA_MNTD; 230 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, uap->flag, 231 uap->argp, p); 232 } else if (uap->flag & NFSSVC_ADDSOCK) { 233 error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof(nfsdarg)); 234 if (error) 235 return (error); 236 error = getsock(p->p_fd, nfsdarg.sock, &fp); 237 if (error) 238 return (error); 239 /* 240 * Get the client address for connected sockets. 241 */ 242 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 243 nam = (struct sockaddr *)0; 244 else { 245 error = getsockaddr(&nam, nfsdarg.name, 246 nfsdarg.namelen); 247 if (error) 248 return (error); 249 } 250 error = nfssvc_addsock(fp, nam, p); 251 } else { 252 error = copyin(uap->argp, (caddr_t)nsd, sizeof (*nsd)); 253 if (error) 254 return (error); 255 if ((uap->flag & NFSSVC_AUTHIN) && 256 ((nfsd = nsd->nsd_nfsd)) != NULL && 257 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 258 slp = nfsd->nfsd_slp; 259 260 /* 261 * First check to see if another nfsd has already 262 * added this credential. 263 */ 264 for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first; 265 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 266 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid && 267 (!nfsd->nfsd_nd->nd_nam2 || 268 netaddr_match(NU_NETFAM(nuidp), 269 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 270 break; 271 } 272 if (nuidp) { 273 nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr); 274 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 275 } else { 276 /* 277 * Nope, so we will. 278 */ 279 if (slp->ns_numuids < nuidhash_max) { 280 slp->ns_numuids++; 281 nuidp = (struct nfsuid *) 282 malloc(sizeof (struct nfsuid), M_NFSUID, 283 M_WAITOK); 284 } else 285 nuidp = (struct nfsuid *)0; 286 if ((slp->ns_flag & SLP_VALID) == 0) { 287 if (nuidp) 288 free((caddr_t)nuidp, M_NFSUID); 289 } else { 290 if (nuidp == (struct nfsuid *)0) { 291 nuidp = slp->ns_uidlruhead.tqh_first; 292 LIST_REMOVE(nuidp, nu_hash); 293 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 294 nu_lru); 295 if (nuidp->nu_flag & NU_NAM) 296 FREE(nuidp->nu_nam, M_SONAME); 297 } 298 nuidp->nu_flag = 0; 299 nuidp->nu_cr = nsd->nsd_cr; 300 if (nuidp->nu_cr.cr_ngroups > NGROUPS) 301 nuidp->nu_cr.cr_ngroups = NGROUPS; 302 nuidp->nu_cr.cr_ref = 1; 303 nuidp->nu_timestamp = nsd->nsd_timestamp; 304 nuidp->nu_expire = time_second + nsd->nsd_ttl; 305 /* 306 * and save the session key in nu_key. 307 */ 308 bcopy(nsd->nsd_key, nuidp->nu_key, 309 sizeof (nsd->nsd_key)); 310 if (nfsd->nfsd_nd->nd_nam2) { 311 struct sockaddr_in *saddr; 312 313 saddr = (struct sockaddr_in *) 314 nfsd->nfsd_nd->nd_nam2; 315 switch (saddr->sin_family) { 316 case AF_INET: 317 nuidp->nu_flag |= NU_INETADDR; 318 nuidp->nu_inetaddr = 319 saddr->sin_addr.s_addr; 320 break; 321 case AF_ISO: 322 default: 323 nuidp->nu_flag |= NU_NAM; 324 nuidp->nu_nam = 325 dup_sockaddr(nfsd->nfsd_nd-> 326 nd_nam2, 1); 327 break; 328 }; 329 } 330 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 331 nu_lru); 332 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 333 nuidp, nu_hash); 334 nfsrv_setcred(&nuidp->nu_cr, 335 &nfsd->nfsd_nd->nd_cr); 336 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 337 } 338 } 339 } 340 if ((uap->flag & NFSSVC_AUTHINFAIL) && (nfsd = nsd->nsd_nfsd)) 341 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 342 error = nfssvc_nfsd(nsd, uap->argp, p); 343 } 344 #endif /* NFS_NOSERVER */ 345 if (error == EINTR || error == ERESTART) 346 error = 0; 347 return (error); 348 } 349 350 #ifndef NFS_NOSERVER 351 /* 352 * Adds a socket to the list for servicing by nfsds. 353 */ 354 static int 355 nfssvc_addsock(fp, mynam, p) 356 struct file *fp; 357 struct sockaddr *mynam; 358 struct proc *p; 359 { 360 register int siz; 361 register struct nfssvc_sock *slp; 362 register struct socket *so; 363 struct nfssvc_sock *tslp; 364 int error, s; 365 366 so = (struct socket *)fp->f_data; 367 tslp = (struct nfssvc_sock *)0; 368 /* 369 * Add it to the list, as required. 370 */ 371 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 372 tslp = nfs_udpsock; 373 if (tslp->ns_flag & SLP_VALID) { 374 FREE(mynam, M_SONAME); 375 return (EPERM); 376 } 377 #ifdef ISO 378 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 379 tslp = nfs_cltpsock; 380 if (tslp->ns_flag & SLP_VALID) { 381 FREE(mynam, M_SONAME); 382 return (EPERM); 383 } 384 #endif /* ISO */ 385 } 386 if (so->so_type == SOCK_STREAM) 387 siz = NFS_MAXPACKET + sizeof (u_long); 388 else 389 siz = NFS_MAXPACKET; 390 error = soreserve(so, siz, siz); 391 if (error) { 392 FREE(mynam, M_SONAME); 393 return (error); 394 } 395 396 /* 397 * Set protocol specific options { for now TCP only } and 398 * reserve some space. For datagram sockets, this can get called 399 * repeatedly for the same socket, but that isn't harmful. 400 */ 401 if (so->so_type == SOCK_STREAM) { 402 struct sockopt sopt; 403 int val; 404 405 bzero(&sopt, sizeof sopt); 406 sopt.sopt_level = SOL_SOCKET; 407 sopt.sopt_name = SO_KEEPALIVE; 408 sopt.sopt_val = &val; 409 sopt.sopt_valsize = sizeof val; 410 val = 1; 411 sosetopt(so, &sopt); 412 } 413 if (so->so_proto->pr_domain->dom_family == AF_INET && 414 so->so_proto->pr_protocol == IPPROTO_TCP) { 415 struct sockopt sopt; 416 int val; 417 418 bzero(&sopt, sizeof sopt); 419 sopt.sopt_level = IPPROTO_TCP; 420 sopt.sopt_name = TCP_NODELAY; 421 sopt.sopt_val = &val; 422 sopt.sopt_valsize = sizeof val; 423 val = 1; 424 sosetopt(so, &sopt); 425 } 426 so->so_rcv.sb_flags &= ~SB_NOINTR; 427 so->so_rcv.sb_timeo = 0; 428 so->so_snd.sb_flags &= ~SB_NOINTR; 429 so->so_snd.sb_timeo = 0; 430 if (tslp) 431 slp = tslp; 432 else { 433 slp = (struct nfssvc_sock *) 434 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 435 bzero((caddr_t)slp, sizeof (struct nfssvc_sock)); 436 STAILQ_INIT(&slp->ns_rec); 437 TAILQ_INIT(&slp->ns_uidlruhead); 438 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 439 } 440 slp->ns_so = so; 441 slp->ns_nam = mynam; 442 fp->f_count++; 443 slp->ns_fp = fp; 444 s = splnet(); 445 so->so_upcallarg = (caddr_t)slp; 446 so->so_upcall = nfsrv_rcv; 447 so->so_rcv.sb_flags |= SB_UPCALL; 448 slp->ns_flag = (SLP_VALID | SLP_NEEDQ); 449 nfsrv_wakenfsd(slp); 450 splx(s); 451 return (0); 452 } 453 454 /* 455 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 456 * until it is killed by a signal. 457 */ 458 static int 459 nfssvc_nfsd(nsd, argp, p) 460 struct nfsd_srvargs *nsd; 461 caddr_t argp; 462 struct proc *p; 463 { 464 register struct mbuf *m; 465 register int siz; 466 register struct nfssvc_sock *slp; 467 register struct socket *so; 468 register int *solockp; 469 struct nfsd *nfsd = nsd->nsd_nfsd; 470 struct nfsrv_descript *nd = NULL; 471 struct mbuf *mreq; 472 int error = 0, cacherep, s, sotype, writes_todo; 473 int procrastinate; 474 u_quad_t cur_usec; 475 476 #ifndef nolint 477 cacherep = RC_DOIT; 478 writes_todo = 0; 479 #endif 480 if (nfsd == (struct nfsd *)0) { 481 nsd->nsd_nfsd = nfsd = (struct nfsd *) 482 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 483 bzero((caddr_t)nfsd, sizeof (struct nfsd)); 484 s = splnet(); 485 nfsd->nfsd_procp = p; 486 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 487 nfs_numnfsd++; 488 } else 489 s = splnet(); 490 491 /* 492 * Loop getting rpc requests until SIGKILL. 493 */ 494 for (;;) { 495 if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) { 496 while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 497 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 498 nfsd->nfsd_flag |= NFSD_WAITING; 499 nfsd_waiting++; 500 error = tsleep((caddr_t)nfsd, PSOCK | PCATCH, 501 "nfsd", 0); 502 nfsd_waiting--; 503 if (error) 504 goto done; 505 } 506 if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 507 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 508 for (slp = nfssvc_sockhead.tqh_first; slp != 0; 509 slp = slp->ns_chain.tqe_next) { 510 if ((slp->ns_flag & (SLP_VALID | SLP_DOREC)) 511 == (SLP_VALID | SLP_DOREC)) { 512 slp->ns_flag &= ~SLP_DOREC; 513 slp->ns_sref++; 514 nfsd->nfsd_slp = slp; 515 break; 516 } 517 } 518 if (slp == 0) 519 nfsd_head_flag &= ~NFSD_CHECKSLP; 520 } 521 if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0) 522 continue; 523 if (slp->ns_flag & SLP_VALID) { 524 if (slp->ns_flag & SLP_DISCONN) 525 nfsrv_zapsock(slp); 526 else if (slp->ns_flag & SLP_NEEDQ) { 527 slp->ns_flag &= ~SLP_NEEDQ; 528 (void) nfs_sndlock(&slp->ns_solock, 529 &slp->ns_solock, 530 (struct nfsreq *)0); 531 nfsrv_rcv(slp->ns_so, (caddr_t)slp, 532 M_WAIT); 533 nfs_sndunlock(&slp->ns_solock, 534 &slp->ns_solock); 535 } 536 error = nfsrv_dorec(slp, nfsd, &nd); 537 cur_usec = nfs_curusec(); 538 if (error && slp->ns_tq.lh_first && 539 slp->ns_tq.lh_first->nd_time <= cur_usec) { 540 error = 0; 541 cacherep = RC_DOIT; 542 writes_todo = 1; 543 } else 544 writes_todo = 0; 545 nfsd->nfsd_flag |= NFSD_REQINPROG; 546 } 547 } else { 548 error = 0; 549 slp = nfsd->nfsd_slp; 550 } 551 if (error || (slp->ns_flag & SLP_VALID) == 0) { 552 if (nd) { 553 free((caddr_t)nd, M_NFSRVDESC); 554 nd = NULL; 555 } 556 nfsd->nfsd_slp = (struct nfssvc_sock *)0; 557 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 558 nfsrv_slpderef(slp); 559 continue; 560 } 561 splx(s); 562 so = slp->ns_so; 563 sotype = so->so_type; 564 if (so->so_proto->pr_flags & PR_CONNREQUIRED) 565 solockp = &slp->ns_solock; 566 else 567 solockp = (int *)0; 568 if (nd) { 569 getmicrotime(&nd->nd_starttime); 570 if (nd->nd_nam2) 571 nd->nd_nam = nd->nd_nam2; 572 else 573 nd->nd_nam = slp->ns_nam; 574 575 /* 576 * Check to see if authorization is needed. 577 */ 578 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 579 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 580 nsd->nsd_haddr = 581 ((struct sockaddr_in *) 582 nd->nd_nam)->sin_addr.s_addr; 583 nsd->nsd_authlen = nfsd->nfsd_authlen; 584 nsd->nsd_verflen = nfsd->nfsd_verflen; 585 if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr, 586 nfsd->nfsd_authlen) && 587 !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr, 588 nfsd->nfsd_verflen) && 589 !copyout((caddr_t)nsd, argp, sizeof (*nsd))) 590 return (ENEEDAUTH); 591 cacherep = RC_DROPIT; 592 } else 593 cacherep = nfsrv_getcache(nd, slp, &mreq); 594 595 /* 596 * Check for just starting up for NQNFS and send 597 * fake "try again later" replies to the NQNFS clients. 598 */ 599 if (notstarted && nqnfsstarttime <= time_second) { 600 if (modify_flag) { 601 nqnfsstarttime = time_second + nqsrv_writeslack; 602 modify_flag = 0; 603 } else 604 notstarted = 0; 605 } 606 if (notstarted) { 607 if ((nd->nd_flag & ND_NQNFS) == 0) 608 cacherep = RC_DROPIT; 609 else if (nd->nd_procnum != NFSPROC_WRITE) { 610 nd->nd_procnum = NFSPROC_NOOP; 611 nd->nd_repstat = NQNFS_TRYLATER; 612 cacherep = RC_DOIT; 613 } else 614 modify_flag = 1; 615 } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 616 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 617 nd->nd_procnum = NFSPROC_NOOP; 618 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 619 cacherep = RC_DOIT; 620 } else if (nfs_privport) { 621 /* Check if source port is privileged */ 622 u_short port; 623 struct sockaddr *nam = nd->nd_nam; 624 struct sockaddr_in *sin; 625 626 sin = (struct sockaddr_in *)nam; 627 port = ntohs(sin->sin_port); 628 if (port >= IPPORT_RESERVED && 629 nd->nd_procnum != NFSPROC_NULL) { 630 nd->nd_procnum = NFSPROC_NOOP; 631 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 632 cacherep = RC_DOIT; 633 printf("NFS request from unprivileged port (%s:%d)\n", 634 inet_ntoa(sin->sin_addr), port); 635 } 636 } 637 638 } 639 640 /* 641 * Loop to get all the write rpc relies that have been 642 * gathered together. 643 */ 644 do { 645 switch (cacherep) { 646 case RC_DOIT: 647 if (nd && (nd->nd_flag & ND_NFSV3)) 648 procrastinate = nfsrvw_procrastinate_v3; 649 else 650 procrastinate = nfsrvw_procrastinate; 651 if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE && 652 procrastinate > 0 && !notstarted)) 653 error = nfsrv_writegather(&nd, slp, 654 nfsd->nfsd_procp, &mreq); 655 else 656 error = (*(nfsrv3_procs[nd->nd_procnum]))(nd, 657 slp, nfsd->nfsd_procp, &mreq); 658 if (mreq == NULL) 659 break; 660 if (error != 0 && error != NFSERR_RETVOID) { 661 if (nd->nd_procnum != NQNFSPROC_VACATED) 662 nfsstats.srv_errs++; 663 nfsrv_updatecache(nd, FALSE, mreq); 664 if (nd->nd_nam2) 665 FREE(nd->nd_nam2, M_SONAME); 666 break; 667 } 668 nfsstats.srvrpccnt[nd->nd_procnum]++; 669 nfsrv_updatecache(nd, TRUE, mreq); 670 nd->nd_mrep = (struct mbuf *)0; 671 case RC_REPLY: 672 m = mreq; 673 siz = 0; 674 while (m) { 675 siz += m->m_len; 676 m = m->m_next; 677 } 678 if (siz <= 0 || siz > NFS_MAXPACKET) { 679 printf("mbuf siz=%d\n",siz); 680 panic("Bad nfs svc reply"); 681 } 682 m = mreq; 683 m->m_pkthdr.len = siz; 684 m->m_pkthdr.rcvif = (struct ifnet *)0; 685 /* 686 * For stream protocols, prepend a Sun RPC 687 * Record Mark. 688 */ 689 if (sotype == SOCK_STREAM) { 690 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 691 *mtod(m, u_int32_t *) = htonl(0x80000000 | siz); 692 } 693 if (solockp) 694 (void) nfs_sndlock(solockp, solockp, 695 (struct nfsreq *)0); 696 if (slp->ns_flag & SLP_VALID) 697 error = nfs_send(so, nd->nd_nam2, m, NULL); 698 else { 699 error = EPIPE; 700 m_freem(m); 701 } 702 if (nfsrtton) 703 nfsd_rt(sotype, nd, cacherep); 704 if (nd->nd_nam2) 705 FREE(nd->nd_nam2, M_SONAME); 706 if (nd->nd_mrep) 707 m_freem(nd->nd_mrep); 708 if (error == EPIPE) 709 nfsrv_zapsock(slp); 710 if (solockp) 711 nfs_sndunlock(solockp, solockp); 712 if (error == EINTR || error == ERESTART) { 713 free((caddr_t)nd, M_NFSRVDESC); 714 nfsrv_slpderef(slp); 715 s = splnet(); 716 goto done; 717 } 718 break; 719 case RC_DROPIT: 720 if (nfsrtton) 721 nfsd_rt(sotype, nd, cacherep); 722 m_freem(nd->nd_mrep); 723 if (nd->nd_nam2) 724 FREE(nd->nd_nam2, M_SONAME); 725 break; 726 }; 727 if (nd) { 728 FREE((caddr_t)nd, M_NFSRVDESC); 729 nd = NULL; 730 } 731 732 /* 733 * Check to see if there are outstanding writes that 734 * need to be serviced. 735 */ 736 cur_usec = nfs_curusec(); 737 s = splsoftclock(); 738 if (slp->ns_tq.lh_first && 739 slp->ns_tq.lh_first->nd_time <= cur_usec) { 740 cacherep = RC_DOIT; 741 writes_todo = 1; 742 } else 743 writes_todo = 0; 744 splx(s); 745 } while (writes_todo); 746 s = splnet(); 747 if (nfsrv_dorec(slp, nfsd, &nd)) { 748 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 749 nfsd->nfsd_slp = NULL; 750 nfsrv_slpderef(slp); 751 } 752 } 753 done: 754 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 755 splx(s); 756 free((caddr_t)nfsd, M_NFSD); 757 nsd->nsd_nfsd = (struct nfsd *)0; 758 if (--nfs_numnfsd == 0) 759 nfsrv_init(TRUE); /* Reinitialize everything */ 760 return (error); 761 } 762 763 /* 764 * Shut down a socket associated with an nfssvc_sock structure. 765 * Should be called with the send lock set, if required. 766 * The trick here is to increment the sref at the start, so that the nfsds 767 * will stop using it and clear ns_flag at the end so that it will not be 768 * reassigned during cleanup. 769 */ 770 static void 771 nfsrv_zapsock(slp) 772 register struct nfssvc_sock *slp; 773 { 774 register struct nfsuid *nuidp, *nnuidp; 775 register struct nfsrv_descript *nwp, *nnwp; 776 struct socket *so; 777 struct file *fp; 778 struct nfsrv_rec *rec; 779 int s; 780 781 slp->ns_flag &= ~SLP_ALLFLAGS; 782 fp = slp->ns_fp; 783 if (fp) { 784 slp->ns_fp = (struct file *)0; 785 so = slp->ns_so; 786 so->so_rcv.sb_flags &= ~SB_UPCALL; 787 so->so_upcall = NULL; 788 so->so_upcallarg = NULL; 789 soshutdown(so, 2); 790 closef(fp, (struct proc *)0); 791 if (slp->ns_nam) 792 FREE(slp->ns_nam, M_SONAME); 793 m_freem(slp->ns_raw); 794 while (rec = STAILQ_FIRST(&slp->ns_rec)) { 795 STAILQ_REMOVE_HEAD(&slp->ns_rec, nr_link); 796 if (rec->nr_address) 797 FREE(rec->nr_address, M_SONAME); 798 m_freem(rec->nr_packet); 799 free(rec, M_NFSRVDESC); 800 } 801 for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0; 802 nuidp = nnuidp) { 803 nnuidp = nuidp->nu_lru.tqe_next; 804 LIST_REMOVE(nuidp, nu_hash); 805 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 806 if (nuidp->nu_flag & NU_NAM) 807 FREE(nuidp->nu_nam, M_SONAME); 808 free((caddr_t)nuidp, M_NFSUID); 809 } 810 s = splsoftclock(); 811 for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) { 812 nnwp = nwp->nd_tq.le_next; 813 LIST_REMOVE(nwp, nd_tq); 814 free((caddr_t)nwp, M_NFSRVDESC); 815 } 816 LIST_INIT(&slp->ns_tq); 817 splx(s); 818 } 819 } 820 821 /* 822 * Derefence a server socket structure. If it has no more references and 823 * is no longer valid, you can throw it away. 824 */ 825 void 826 nfsrv_slpderef(slp) 827 register struct nfssvc_sock *slp; 828 { 829 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) { 830 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 831 free((caddr_t)slp, M_NFSSVC); 832 } 833 } 834 835 /* 836 * Initialize the data structures for the server. 837 * Handshake with any new nfsds starting up to avoid any chance of 838 * corruption. 839 */ 840 void 841 nfsrv_init(terminating) 842 int terminating; 843 { 844 register struct nfssvc_sock *slp, *nslp; 845 846 if (nfssvc_sockhead_flag & SLP_INIT) 847 panic("nfsd init"); 848 nfssvc_sockhead_flag |= SLP_INIT; 849 if (terminating) { 850 for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) { 851 nslp = slp->ns_chain.tqe_next; 852 if (slp->ns_flag & SLP_VALID) 853 nfsrv_zapsock(slp); 854 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 855 free((caddr_t)slp, M_NFSSVC); 856 } 857 nfsrv_cleancache(); /* And clear out server cache */ 858 } else 859 nfs_pub.np_valid = 0; 860 861 TAILQ_INIT(&nfssvc_sockhead); 862 nfssvc_sockhead_flag &= ~SLP_INIT; 863 if (nfssvc_sockhead_flag & SLP_WANTINIT) { 864 nfssvc_sockhead_flag &= ~SLP_WANTINIT; 865 wakeup((caddr_t)&nfssvc_sockhead); 866 } 867 868 TAILQ_INIT(&nfsd_head); 869 nfsd_head_flag &= ~NFSD_CHECKSLP; 870 871 nfs_udpsock = (struct nfssvc_sock *) 872 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 873 bzero((caddr_t)nfs_udpsock, sizeof (struct nfssvc_sock)); 874 STAILQ_INIT(&nfs_udpsock->ns_rec); 875 TAILQ_INIT(&nfs_udpsock->ns_uidlruhead); 876 TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain); 877 878 nfs_cltpsock = (struct nfssvc_sock *) 879 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 880 bzero((caddr_t)nfs_cltpsock, sizeof (struct nfssvc_sock)); 881 STAILQ_INIT(&nfs_cltpsock->ns_rec); 882 TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead); 883 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain); 884 } 885 886 /* 887 * Add entries to the server monitor log. 888 */ 889 static void 890 nfsd_rt(sotype, nd, cacherep) 891 int sotype; 892 register struct nfsrv_descript *nd; 893 int cacherep; 894 { 895 register struct drt *rt; 896 897 rt = &nfsdrt.drt[nfsdrt.pos]; 898 if (cacherep == RC_DOIT) 899 rt->flag = 0; 900 else if (cacherep == RC_REPLY) 901 rt->flag = DRT_CACHEREPLY; 902 else 903 rt->flag = DRT_CACHEDROP; 904 if (sotype == SOCK_STREAM) 905 rt->flag |= DRT_TCP; 906 if (nd->nd_flag & ND_NQNFS) 907 rt->flag |= DRT_NQNFS; 908 else if (nd->nd_flag & ND_NFSV3) 909 rt->flag |= DRT_NFSV3; 910 rt->proc = nd->nd_procnum; 911 if (nd->nd_nam->sa_family == AF_INET) 912 rt->ipadr = ((struct sockaddr_in *)nd->nd_nam)->sin_addr.s_addr; 913 else 914 rt->ipadr = INADDR_ANY; 915 rt->resptime = nfs_curusec() - (nd->nd_starttime.tv_sec * 1000000 + nd->nd_starttime.tv_usec); 916 getmicrotime(&rt->tstamp); 917 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 918 } 919 #endif /* NFS_NOSERVER */ 920 921 static int nfs_defect = 0; 922 SYSCTL_INT(_vfs_nfs, OID_AUTO, defect, CTLFLAG_RW, &nfs_defect, 0, ""); 923 924 /* 925 * Asynchronous I/O daemons for client nfs. 926 * They do read-ahead and write-behind operations on the block I/O cache. 927 * Never returns unless it fails or gets killed. 928 */ 929 static int 930 nfssvc_iod(p) 931 struct proc *p; 932 { 933 register struct buf *bp; 934 register int i, myiod; 935 struct nfsmount *nmp; 936 int error = 0; 937 938 /* 939 * Assign my position or return error if too many already running 940 */ 941 myiod = -1; 942 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 943 if (nfs_asyncdaemon[i] == 0) { 944 nfs_asyncdaemon[i]++; 945 myiod = i; 946 break; 947 } 948 if (myiod == -1) 949 return (EBUSY); 950 nfs_numasync++; 951 /* 952 * Just loop around doin our stuff until SIGKILL 953 */ 954 for (;;) { 955 while (((nmp = nfs_iodmount[myiod]) == NULL 956 || nmp->nm_bufq.tqh_first == NULL) 957 && error == 0) { 958 if (nmp) 959 nmp->nm_bufqiods--; 960 nfs_iodwant[myiod] = p; 961 nfs_iodmount[myiod] = NULL; 962 error = tsleep((caddr_t)&nfs_iodwant[myiod], 963 PWAIT | PCATCH, "nfsidl", 0); 964 } 965 if (error) { 966 nfs_asyncdaemon[myiod] = 0; 967 if (nmp) 968 nmp->nm_bufqiods--; 969 nfs_iodwant[myiod] = NULL; 970 nfs_iodmount[myiod] = NULL; 971 nfs_numasync--; 972 return (error); 973 } 974 while ((bp = nmp->nm_bufq.tqh_first) != NULL) { 975 /* Take one off the front of the list */ 976 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 977 nmp->nm_bufqlen--; 978 if (nmp->nm_bufqwant && nmp->nm_bufqlen < 2 * nfs_numasync) { 979 nmp->nm_bufqwant = FALSE; 980 wakeup(&nmp->nm_bufq); 981 } 982 if (bp->b_flags & B_READ) 983 (void) nfs_doio(bp, bp->b_rcred, (struct proc *)0); 984 else 985 (void) nfs_doio(bp, bp->b_wcred, (struct proc *)0); 986 /* 987 * If there are more than one iod on this mount, then defect 988 * so that the iods can be shared out fairly between the mounts 989 */ 990 if (nfs_defect && nmp->nm_bufqiods > 1) { 991 NFS_DPF(ASYNCIO, 992 ("nfssvc_iod: iod %d defecting from mount %p\n", 993 myiod, nmp)); 994 nfs_iodmount[myiod] = NULL; 995 nmp->nm_bufqiods--; 996 break; 997 } 998 } 999 } 1000 } 1001 1002 1003 /* 1004 * Get an authorization string for the uid by having the mount_nfs sitting 1005 * on this mount point porpous out of the kernel and do it. 1006 */ 1007 int 1008 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1009 register struct nfsmount *nmp; 1010 struct nfsreq *rep; 1011 struct ucred *cred; 1012 char **auth_str; 1013 int *auth_len; 1014 char *verf_str; 1015 int *verf_len; 1016 NFSKERBKEY_T key; /* return session key */ 1017 { 1018 int error = 0; 1019 1020 while ((nmp->nm_state & NFSSTA_WAITAUTH) == 0) { 1021 nmp->nm_state |= NFSSTA_WANTAUTH; 1022 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK, 1023 "nfsauth1", 2 * hz); 1024 error = nfs_sigintr(nmp, rep, rep->r_procp); 1025 if (error) { 1026 nmp->nm_state &= ~NFSSTA_WANTAUTH; 1027 return (error); 1028 } 1029 } 1030 nmp->nm_state &= ~(NFSSTA_WAITAUTH | NFSSTA_WANTAUTH); 1031 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1032 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1033 nmp->nm_verfstr = verf_str; 1034 nmp->nm_verflen = *verf_len; 1035 nmp->nm_authuid = cred->cr_uid; 1036 wakeup((caddr_t)&nmp->nm_authstr); 1037 1038 /* 1039 * And wait for mount_nfs to do its stuff. 1040 */ 1041 while ((nmp->nm_state & NFSSTA_HASAUTH) == 0 && error == 0) { 1042 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK, 1043 "nfsauth2", 2 * hz); 1044 error = nfs_sigintr(nmp, rep, rep->r_procp); 1045 } 1046 if (nmp->nm_state & NFSSTA_AUTHERR) { 1047 nmp->nm_state &= ~NFSSTA_AUTHERR; 1048 error = EAUTH; 1049 } 1050 if (error) 1051 free((caddr_t)*auth_str, M_TEMP); 1052 else { 1053 *auth_len = nmp->nm_authlen; 1054 *verf_len = nmp->nm_verflen; 1055 bcopy((caddr_t)nmp->nm_key, (caddr_t)key, sizeof (key)); 1056 } 1057 nmp->nm_state &= ~NFSSTA_HASAUTH; 1058 nmp->nm_state |= NFSSTA_WAITAUTH; 1059 if (nmp->nm_state & NFSSTA_WANTAUTH) { 1060 nmp->nm_state &= ~NFSSTA_WANTAUTH; 1061 wakeup((caddr_t)&nmp->nm_authtype); 1062 } 1063 return (error); 1064 } 1065 1066 /* 1067 * Get a nickname authenticator and verifier. 1068 */ 1069 int 1070 nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len) 1071 struct nfsmount *nmp; 1072 struct ucred *cred; 1073 char **auth_str; 1074 int *auth_len; 1075 char *verf_str; 1076 int verf_len; 1077 { 1078 register struct nfsuid *nuidp; 1079 register u_int32_t *nickp, *verfp; 1080 struct timeval ktvin, ktvout; 1081 1082 #ifdef DIAGNOSTIC 1083 if (verf_len < (4 * NFSX_UNSIGNED)) 1084 panic("nfs_getnickauth verf too small"); 1085 #endif 1086 for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first; 1087 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 1088 if (nuidp->nu_cr.cr_uid == cred->cr_uid) 1089 break; 1090 } 1091 if (!nuidp || nuidp->nu_expire < time_second) 1092 return (EACCES); 1093 1094 /* 1095 * Move to the end of the lru list (end of lru == most recently used). 1096 */ 1097 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1098 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1099 1100 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1101 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1102 *nickp = txdr_unsigned(nuidp->nu_nickname); 1103 *auth_str = (char *)nickp; 1104 *auth_len = 2 * NFSX_UNSIGNED; 1105 1106 /* 1107 * Now we must encrypt the verifier and package it up. 1108 */ 1109 verfp = (u_int32_t *)verf_str; 1110 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1111 if (time_second > nuidp->nu_timestamp.tv_sec || 1112 (time_second == nuidp->nu_timestamp.tv_sec && 1113 time_second > nuidp->nu_timestamp.tv_usec)) 1114 getmicrotime(&nuidp->nu_timestamp); 1115 else 1116 nuidp->nu_timestamp.tv_usec++; 1117 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1118 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1119 1120 /* 1121 * Now encrypt the timestamp verifier in ecb mode using the session 1122 * key. 1123 */ 1124 #ifdef NFSKERB 1125 XXX 1126 #endif 1127 1128 *verfp++ = ktvout.tv_sec; 1129 *verfp++ = ktvout.tv_usec; 1130 *verfp = 0; 1131 return (0); 1132 } 1133 1134 /* 1135 * Save the current nickname in a hash list entry on the mount point. 1136 */ 1137 int 1138 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1139 register struct nfsmount *nmp; 1140 struct ucred *cred; 1141 int len; 1142 NFSKERBKEY_T key; 1143 struct mbuf **mdp; 1144 char **dposp; 1145 struct mbuf *mrep; 1146 { 1147 register struct nfsuid *nuidp; 1148 register u_int32_t *tl; 1149 register int32_t t1; 1150 struct mbuf *md = *mdp; 1151 struct timeval ktvin, ktvout; 1152 u_int32_t nick; 1153 char *dpos = *dposp, *cp2; 1154 int deltasec, error = 0; 1155 1156 if (len == (3 * NFSX_UNSIGNED)) { 1157 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1158 ktvin.tv_sec = *tl++; 1159 ktvin.tv_usec = *tl++; 1160 nick = fxdr_unsigned(u_int32_t, *tl); 1161 1162 /* 1163 * Decrypt the timestamp in ecb mode. 1164 */ 1165 #ifdef NFSKERB 1166 XXX 1167 #endif 1168 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1169 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1170 deltasec = time_second - ktvout.tv_sec; 1171 if (deltasec < 0) 1172 deltasec = -deltasec; 1173 /* 1174 * If ok, add it to the hash list for the mount point. 1175 */ 1176 if (deltasec <= NFS_KERBCLOCKSKEW) { 1177 if (nmp->nm_numuids < nuidhash_max) { 1178 nmp->nm_numuids++; 1179 nuidp = (struct nfsuid *) 1180 malloc(sizeof (struct nfsuid), M_NFSUID, 1181 M_WAITOK); 1182 } else { 1183 nuidp = nmp->nm_uidlruhead.tqh_first; 1184 LIST_REMOVE(nuidp, nu_hash); 1185 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1186 nu_lru); 1187 } 1188 nuidp->nu_flag = 0; 1189 nuidp->nu_cr.cr_uid = cred->cr_uid; 1190 nuidp->nu_expire = time_second + NFS_KERBTTL; 1191 nuidp->nu_timestamp = ktvout; 1192 nuidp->nu_nickname = nick; 1193 bcopy(key, nuidp->nu_key, sizeof (key)); 1194 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1195 nu_lru); 1196 LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid), 1197 nuidp, nu_hash); 1198 } 1199 } else 1200 nfsm_adv(nfsm_rndup(len)); 1201 nfsmout: 1202 *mdp = md; 1203 *dposp = dpos; 1204 return (error); 1205 }
Cache object: f9af9d4b89fd48eba34d9fe9200761e9
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