nfs_nfsiod.c revision 44246
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 * $Id: nfs_syscalls.c,v 1.47 1999/02/18 09:19:41 dfr Exp $ 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 75static MALLOC_DEFINE(M_NFSSVC, "NFS srvsock", "Nfs server structure"); 76 77/* Global defs. */ 78extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *nd, 79 struct nfssvc_sock *slp, 80 struct proc *procp, 81 struct mbuf **mreqp)); 82extern int nfs_numasync; 83extern time_t nqnfsstarttime; 84extern int nqsrv_writeslack; 85extern int nfsrtton; 86extern struct nfsstats nfsstats; 87extern int nfsrvw_procrastinate; 88extern int nfsrvw_procrastinate_v3; 89struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock; 90static int nuidhash_max = NFS_MAXUIDHASH; 91 92#ifndef NFS_NOSERVER 93static void nfsrv_zapsock __P((struct nfssvc_sock *slp)); 94#endif 95static int nfssvc_iod __P((struct proc *)); 96 97#define TRUE 1 98#define FALSE 0 99 100static int nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 101 102SYSCTL_DECL(_vfs_nfs); 103 104#ifndef NFS_NOSERVER 105int nfsd_waiting = 0; 106static struct nfsdrt nfsdrt; 107static int nfs_numnfsd = 0; 108static int notstarted = 1; 109static int modify_flag = 0; 110static void nfsd_rt __P((int sotype, struct nfsrv_descript *nd, 111 int cacherep)); 112static int nfssvc_addsock __P((struct file *, struct sockaddr *, 113 struct proc *)); 114static int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *)); 115 116static int nfs_privport = 0; 117SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, ""); 118SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, ""); 119SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, ""); 120 121/* 122 * NFS server system calls 123 * getfh() lives here too, but maybe should move to kern/vfs_syscalls.c 124 */ 125 126/* 127 * Get file handle system call 128 */ 129#ifndef _SYS_SYSPROTO_H_ 130struct getfh_args { 131 char *fname; 132 fhandle_t *fhp; 133}; 134#endif 135int 136getfh(p, uap) 137 struct proc *p; 138 register struct getfh_args *uap; 139{ 140 register struct vnode *vp; 141 fhandle_t fh; 142 int error; 143 struct nameidata nd; 144 145 /* 146 * Must be super user 147 */ 148 error = suser(p->p_ucred, &p->p_acflag); 149 if(error) 150 return (error); 151 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p); 152 error = namei(&nd); 153 if (error) 154 return (error); 155 vp = nd.ni_vp; 156 bzero((caddr_t)&fh, sizeof(fh)); 157 fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid; 158 error = VFS_VPTOFH(vp, &fh.fh_fid); 159 vput(vp); 160 if (error) 161 return (error); 162 error = copyout((caddr_t)&fh, (caddr_t)uap->fhp, sizeof (fh)); 163 return (error); 164} 165 166#endif /* NFS_NOSERVER */ 167/* 168 * Nfs server psuedo system call for the nfsd's 169 * Based on the flag value it either: 170 * - adds a socket to the selection list 171 * - remains in the kernel as an nfsd 172 * - remains in the kernel as an nfsiod 173 */ 174#ifndef _SYS_SYSPROTO_H_ 175struct nfssvc_args { 176 int flag; 177 caddr_t argp; 178}; 179#endif 180int 181nfssvc(p, uap) 182 struct proc *p; 183 register struct nfssvc_args *uap; 184{ 185#ifndef NFS_NOSERVER 186 struct nameidata nd; 187 struct file *fp; 188 struct sockaddr *nam; 189 struct nfsd_args nfsdarg; 190 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 191 struct nfsd_cargs ncd; 192 struct nfsd *nfsd; 193 struct nfssvc_sock *slp; 194 struct nfsuid *nuidp; 195 struct nfsmount *nmp; 196#endif /* NFS_NOSERVER */ 197 int error; 198 199 /* 200 * Must be super user 201 */ 202 error = suser(p->p_ucred, &p->p_acflag); 203 if(error) 204 return (error); 205 while (nfssvc_sockhead_flag & SLP_INIT) { 206 nfssvc_sockhead_flag |= SLP_WANTINIT; 207 (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0); 208 } 209 if (uap->flag & NFSSVC_BIOD) 210 error = nfssvc_iod(p); 211#ifdef NFS_NOSERVER 212 else 213 error = ENXIO; 214#else /* !NFS_NOSERVER */ 215 else if (uap->flag & NFSSVC_MNTD) { 216 error = copyin(uap->argp, (caddr_t)&ncd, sizeof (ncd)); 217 if (error) 218 return (error); 219 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, 220 ncd.ncd_dirp, p); 221 error = namei(&nd); 222 if (error) 223 return (error); 224 if ((nd.ni_vp->v_flag & VROOT) == 0) 225 error = EINVAL; 226 nmp = VFSTONFS(nd.ni_vp->v_mount); 227 vput(nd.ni_vp); 228 if (error) 229 return (error); 230 if ((nmp->nm_state & NFSSTA_MNTD) && 231 (uap->flag & NFSSVC_GOTAUTH) == 0) 232 return (0); 233 nmp->nm_state |= NFSSTA_MNTD; 234 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, uap->flag, 235 uap->argp, p); 236 } else if (uap->flag & NFSSVC_ADDSOCK) { 237 error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof(nfsdarg)); 238 if (error) 239 return (error); 240 error = getsock(p->p_fd, nfsdarg.sock, &fp); 241 if (error) 242 return (error); 243 /* 244 * Get the client address for connected sockets. 245 */ 246 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 247 nam = (struct sockaddr *)0; 248 else { 249 error = getsockaddr(&nam, nfsdarg.name, 250 nfsdarg.namelen); 251 if (error) 252 return (error); 253 } 254 error = nfssvc_addsock(fp, nam, p); 255 } else { 256 error = copyin(uap->argp, (caddr_t)nsd, sizeof (*nsd)); 257 if (error) 258 return (error); 259 if ((uap->flag & NFSSVC_AUTHIN) && 260 ((nfsd = nsd->nsd_nfsd)) != NULL && 261 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 262 slp = nfsd->nfsd_slp; 263 264 /* 265 * First check to see if another nfsd has already 266 * added this credential. 267 */ 268 for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first; 269 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 270 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid && 271 (!nfsd->nfsd_nd->nd_nam2 || 272 netaddr_match(NU_NETFAM(nuidp), 273 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 274 break; 275 } 276 if (nuidp) { 277 nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr); 278 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 279 } else { 280 /* 281 * Nope, so we will. 282 */ 283 if (slp->ns_numuids < nuidhash_max) { 284 slp->ns_numuids++; 285 nuidp = (struct nfsuid *) 286 malloc(sizeof (struct nfsuid), M_NFSUID, 287 M_WAITOK); 288 } else 289 nuidp = (struct nfsuid *)0; 290 if ((slp->ns_flag & SLP_VALID) == 0) { 291 if (nuidp) 292 free((caddr_t)nuidp, M_NFSUID); 293 } else { 294 if (nuidp == (struct nfsuid *)0) { 295 nuidp = slp->ns_uidlruhead.tqh_first; 296 LIST_REMOVE(nuidp, nu_hash); 297 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 298 nu_lru); 299 if (nuidp->nu_flag & NU_NAM) 300 FREE(nuidp->nu_nam, M_SONAME); 301 } 302 nuidp->nu_flag = 0; 303 nuidp->nu_cr = nsd->nsd_cr; 304 if (nuidp->nu_cr.cr_ngroups > NGROUPS) 305 nuidp->nu_cr.cr_ngroups = NGROUPS; 306 nuidp->nu_cr.cr_ref = 1; 307 nuidp->nu_timestamp = nsd->nsd_timestamp; 308 nuidp->nu_expire = time_second + nsd->nsd_ttl; 309 /* 310 * and save the session key in nu_key. 311 */ 312 bcopy(nsd->nsd_key, nuidp->nu_key, 313 sizeof (nsd->nsd_key)); 314 if (nfsd->nfsd_nd->nd_nam2) { 315 struct sockaddr_in *saddr; 316 317 saddr = (struct sockaddr_in *) 318 nfsd->nfsd_nd->nd_nam2; 319 switch (saddr->sin_family) { 320 case AF_INET: 321 nuidp->nu_flag |= NU_INETADDR; 322 nuidp->nu_inetaddr = 323 saddr->sin_addr.s_addr; 324 break; 325 case AF_ISO: 326 default: 327 nuidp->nu_flag |= NU_NAM; 328 nuidp->nu_nam = 329 dup_sockaddr(nfsd->nfsd_nd-> 330 nd_nam2, 1); 331 break; 332 }; 333 } 334 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 335 nu_lru); 336 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 337 nuidp, nu_hash); 338 nfsrv_setcred(&nuidp->nu_cr, 339 &nfsd->nfsd_nd->nd_cr); 340 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 341 } 342 } 343 } 344 if ((uap->flag & NFSSVC_AUTHINFAIL) && (nfsd = nsd->nsd_nfsd)) 345 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 346 error = nfssvc_nfsd(nsd, uap->argp, p); 347 } 348#endif /* NFS_NOSERVER */ 349 if (error == EINTR || error == ERESTART) 350 error = 0; 351 return (error); 352} 353 354#ifndef NFS_NOSERVER 355/* 356 * Adds a socket to the list for servicing by nfsds. 357 */ 358static int 359nfssvc_addsock(fp, mynam, p) 360 struct file *fp; 361 struct sockaddr *mynam; 362 struct proc *p; 363{ 364 register int siz; 365 register struct nfssvc_sock *slp; 366 register struct socket *so; 367 struct nfssvc_sock *tslp; 368 int error, s; 369 370 so = (struct socket *)fp->f_data; 371 tslp = (struct nfssvc_sock *)0; 372 /* 373 * Add it to the list, as required. 374 */ 375 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 376 tslp = nfs_udpsock; 377 if (tslp->ns_flag & SLP_VALID) { 378 FREE(mynam, M_SONAME); 379 return (EPERM); 380 } 381#ifdef ISO 382 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 383 tslp = nfs_cltpsock; 384 if (tslp->ns_flag & SLP_VALID) { 385 FREE(mynam, M_SONAME); 386 return (EPERM); 387 } 388#endif /* ISO */ 389 } 390 if (so->so_type == SOCK_STREAM) 391 siz = NFS_MAXPACKET + sizeof (u_long); 392 else 393 siz = NFS_MAXPACKET; 394 error = soreserve(so, siz, siz); 395 if (error) { 396 FREE(mynam, M_SONAME); 397 return (error); 398 } 399 400 /* 401 * Set protocol specific options { for now TCP only } and 402 * reserve some space. For datagram sockets, this can get called 403 * repeatedly for the same socket, but that isn't harmful. 404 */ 405 if (so->so_type == SOCK_STREAM) { 406 struct sockopt sopt; 407 int val; 408 409 bzero(&sopt, sizeof sopt); 410 sopt.sopt_level = SOL_SOCKET; 411 sopt.sopt_name = SO_KEEPALIVE; 412 sopt.sopt_val = &val; 413 sopt.sopt_valsize = sizeof val; 414 val = 1; 415 sosetopt(so, &sopt); 416 } 417 if (so->so_proto->pr_domain->dom_family == AF_INET && 418 so->so_proto->pr_protocol == IPPROTO_TCP) { 419 struct sockopt sopt; 420 int val; 421 422 bzero(&sopt, sizeof sopt); 423 sopt.sopt_level = IPPROTO_TCP; 424 sopt.sopt_name = TCP_NODELAY; 425 sopt.sopt_val = &val; 426 sopt.sopt_valsize = sizeof val; 427 val = 1; 428 sosetopt(so, &sopt); 429 } 430 so->so_rcv.sb_flags &= ~SB_NOINTR; 431 so->so_rcv.sb_timeo = 0; 432 so->so_snd.sb_flags &= ~SB_NOINTR; 433 so->so_snd.sb_timeo = 0; 434 if (tslp) 435 slp = tslp; 436 else { 437 slp = (struct nfssvc_sock *) 438 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 439 bzero((caddr_t)slp, sizeof (struct nfssvc_sock)); 440 STAILQ_INIT(&slp->ns_rec); 441 TAILQ_INIT(&slp->ns_uidlruhead); 442 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 443 } 444 slp->ns_so = so; 445 slp->ns_nam = mynam; 446 fp->f_count++; 447 slp->ns_fp = fp; 448 s = splnet(); 449 so->so_upcallarg = (caddr_t)slp; 450 so->so_upcall = nfsrv_rcv; 451 so->so_rcv.sb_flags |= SB_UPCALL; 452 slp->ns_flag = (SLP_VALID | SLP_NEEDQ); 453 nfsrv_wakenfsd(slp); 454 splx(s); 455 return (0); 456} 457 458/* 459 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 460 * until it is killed by a signal. 461 */ 462static int 463nfssvc_nfsd(nsd, argp, p) 464 struct nfsd_srvargs *nsd; 465 caddr_t argp; 466 struct proc *p; 467{ 468 register struct mbuf *m; 469 register int siz; 470 register struct nfssvc_sock *slp; 471 struct nfsd *nfsd = nsd->nsd_nfsd; 472 struct nfsrv_descript *nd = NULL; 473 struct mbuf *mreq; 474 int error = 0, cacherep, s, sotype, writes_todo; 475 int procrastinate; 476 u_quad_t cur_usec; 477 478#ifndef nolint 479 cacherep = RC_DOIT; 480 writes_todo = 0; 481#endif 482 if (nfsd == (struct nfsd *)0) { 483 nsd->nsd_nfsd = nfsd = (struct nfsd *) 484 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 485 bzero((caddr_t)nfsd, sizeof (struct nfsd)); 486 s = splnet(); 487 nfsd->nfsd_procp = p; 488 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 489 nfs_numnfsd++; 490 } else 491 s = splnet(); 492 493 /* 494 * Loop getting rpc requests until SIGKILL. 495 */ 496 for (;;) { 497 if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) { 498 while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 499 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 500 nfsd->nfsd_flag |= NFSD_WAITING; 501 nfsd_waiting++; 502 error = tsleep((caddr_t)nfsd, PSOCK | PCATCH, 503 "nfsd", 0); 504 nfsd_waiting--; 505 if (error) 506 goto done; 507 } 508 if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 509 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 510 for (slp = nfssvc_sockhead.tqh_first; slp != 0; 511 slp = slp->ns_chain.tqe_next) { 512 if ((slp->ns_flag & (SLP_VALID | SLP_DOREC)) 513 == (SLP_VALID | SLP_DOREC)) { 514 slp->ns_flag &= ~SLP_DOREC; 515 slp->ns_sref++; 516 nfsd->nfsd_slp = slp; 517 break; 518 } 519 } 520 if (slp == 0) 521 nfsd_head_flag &= ~NFSD_CHECKSLP; 522 } 523 if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0) 524 continue; 525 if (slp->ns_flag & SLP_VALID) { 526 if (slp->ns_flag & SLP_DISCONN) 527 nfsrv_zapsock(slp); 528 else if (slp->ns_flag & SLP_NEEDQ) { 529 slp->ns_flag &= ~SLP_NEEDQ; 530 (void) nfs_slplock(slp, 1); 531 nfsrv_rcv(slp->ns_so, (caddr_t)slp, 532 M_WAIT); 533 nfs_slpunlock(slp); 534 } 535 error = nfsrv_dorec(slp, nfsd, &nd); 536 cur_usec = nfs_curusec(); 537 if (error && slp->ns_tq.lh_first && 538 slp->ns_tq.lh_first->nd_time <= cur_usec) { 539 error = 0; 540 cacherep = RC_DOIT; 541 writes_todo = 1; 542 } else 543 writes_todo = 0; 544 nfsd->nfsd_flag |= NFSD_REQINPROG; 545 } 546 } else { 547 error = 0; 548 slp = nfsd->nfsd_slp; 549 } 550 if (error || (slp->ns_flag & SLP_VALID) == 0) { 551 if (nd) { 552 free((caddr_t)nd, M_NFSRVDESC); 553 nd = NULL; 554 } 555 nfsd->nfsd_slp = (struct nfssvc_sock *)0; 556 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 557 nfsrv_slpderef(slp); 558 continue; 559 } 560 splx(s); 561 sotype = slp->ns_so->so_type; 562 if (nd) { 563 getmicrotime(&nd->nd_starttime); 564 if (nd->nd_nam2) 565 nd->nd_nam = nd->nd_nam2; 566 else 567 nd->nd_nam = slp->ns_nam; 568 569 /* 570 * Check to see if authorization is needed. 571 */ 572 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 573 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 574 nsd->nsd_haddr = 575 ((struct sockaddr_in *) 576 nd->nd_nam)->sin_addr.s_addr; 577 nsd->nsd_authlen = nfsd->nfsd_authlen; 578 nsd->nsd_verflen = nfsd->nfsd_verflen; 579 if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr, 580 nfsd->nfsd_authlen) && 581 !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr, 582 nfsd->nfsd_verflen) && 583 !copyout((caddr_t)nsd, argp, sizeof (*nsd))) 584 return (ENEEDAUTH); 585 cacherep = RC_DROPIT; 586 } else 587 cacherep = nfsrv_getcache(nd, slp, &mreq); 588 589 /* 590 * Check for just starting up for NQNFS and send 591 * fake "try again later" replies to the NQNFS clients. 592 */ 593 if (notstarted && nqnfsstarttime <= time_second) { 594 if (modify_flag) { 595 nqnfsstarttime = time_second + nqsrv_writeslack; 596 modify_flag = 0; 597 } else 598 notstarted = 0; 599 } 600 if (notstarted) { 601 if ((nd->nd_flag & ND_NQNFS) == 0) 602 cacherep = RC_DROPIT; 603 else if (nd->nd_procnum != NFSPROC_WRITE) { 604 nd->nd_procnum = NFSPROC_NOOP; 605 nd->nd_repstat = NQNFS_TRYLATER; 606 cacherep = RC_DOIT; 607 } else 608 modify_flag = 1; 609 } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 610 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 611 nd->nd_procnum = NFSPROC_NOOP; 612 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 613 cacherep = RC_DOIT; 614 } else if (nfs_privport) { 615 /* Check if source port is privileged */ 616 u_short port; 617 struct sockaddr *nam = nd->nd_nam; 618 struct sockaddr_in *sin; 619 620 sin = (struct sockaddr_in *)nam; 621 port = ntohs(sin->sin_port); 622 if (port >= IPPORT_RESERVED && 623 nd->nd_procnum != NFSPROC_NULL) { 624 nd->nd_procnum = NFSPROC_NOOP; 625 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 626 cacherep = RC_DOIT; 627 printf("NFS request from unprivileged port (%s:%d)\n", 628 inet_ntoa(sin->sin_addr), port); 629 } 630 } 631 632 } 633 634 /* 635 * Loop to get all the write rpc relies that have been 636 * gathered together. 637 */ 638 do { 639 switch (cacherep) { 640 case RC_DOIT: 641 if (nd && (nd->nd_flag & ND_NFSV3)) 642 procrastinate = nfsrvw_procrastinate_v3; 643 else 644 procrastinate = nfsrvw_procrastinate; 645 if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE && 646 procrastinate > 0 && !notstarted)) 647 error = nfsrv_writegather(&nd, slp, 648 nfsd->nfsd_procp, &mreq); 649 else 650 error = (*(nfsrv3_procs[nd->nd_procnum]))(nd, 651 slp, nfsd->nfsd_procp, &mreq); 652 if (mreq == NULL) 653 break; 654 if (error) { 655 if (nd->nd_procnum != NQNFSPROC_VACATED) 656 nfsstats.srv_errs++; 657 nfsrv_updatecache(nd, FALSE, mreq); 658 if (nd->nd_nam2) 659 FREE(nd->nd_nam2, M_SONAME); 660 break; 661 } 662 nfsstats.srvrpccnt[nd->nd_procnum]++; 663 nfsrv_updatecache(nd, TRUE, mreq); 664 nd->nd_mrep = (struct mbuf *)0; 665 case RC_REPLY: 666 m = mreq; 667 siz = 0; 668 while (m) { 669 siz += m->m_len; 670 m = m->m_next; 671 } 672 if (siz <= 0 || siz > NFS_MAXPACKET) { 673 printf("mbuf siz=%d\n",siz); 674 panic("Bad nfs svc reply"); 675 } 676 m = mreq; 677 m->m_pkthdr.len = siz; 678 m->m_pkthdr.rcvif = (struct ifnet *)0; 679 /* 680 * For stream protocols, prepend a Sun RPC 681 * Record Mark. 682 */ 683 if (sotype == SOCK_STREAM) { 684 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 685 *mtod(m, u_int32_t *) = htonl(0x80000000 | siz); 686 } 687 if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED) 688 (void) nfs_slplock(slp, 1); 689 if (slp->ns_flag & SLP_VALID) 690 error = nfs_send(slp->ns_so, nd->nd_nam2, m, NULL); 691 else { 692 error = EPIPE; 693 m_freem(m); 694 } 695 if (nfsrtton) 696 nfsd_rt(sotype, nd, cacherep); 697 if (nd->nd_nam2) 698 FREE(nd->nd_nam2, M_SONAME); 699 if (nd->nd_mrep) 700 m_freem(nd->nd_mrep); 701 if (error == EPIPE) 702 nfsrv_zapsock(slp); 703 if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED) 704 nfs_slpunlock(slp); 705 if (error == EINTR || error == ERESTART) { 706 free((caddr_t)nd, M_NFSRVDESC); 707 nfsrv_slpderef(slp); 708 s = splnet(); 709 goto done; 710 } 711 break; 712 case RC_DROPIT: 713 if (nfsrtton) 714 nfsd_rt(sotype, nd, cacherep); 715 m_freem(nd->nd_mrep); 716 if (nd->nd_nam2) 717 FREE(nd->nd_nam2, M_SONAME); 718 break; 719 }; 720 if (nd) { 721 FREE((caddr_t)nd, M_NFSRVDESC); 722 nd = NULL; 723 } 724 725 /* 726 * Check to see if there are outstanding writes that 727 * need to be serviced. 728 */ 729 cur_usec = nfs_curusec(); 730 s = splsoftclock(); 731 if (slp->ns_tq.lh_first && 732 slp->ns_tq.lh_first->nd_time <= cur_usec) { 733 cacherep = RC_DOIT; 734 writes_todo = 1; 735 } else 736 writes_todo = 0; 737 splx(s); 738 } while (writes_todo); 739 s = splnet(); 740 if (nfsrv_dorec(slp, nfsd, &nd)) { 741 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 742 nfsd->nfsd_slp = NULL; 743 nfsrv_slpderef(slp); 744 } 745 } 746done: 747 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 748 splx(s); 749 free((caddr_t)nfsd, M_NFSD); 750 nsd->nsd_nfsd = (struct nfsd *)0; 751 if (--nfs_numnfsd == 0) 752 nfsrv_init(TRUE); /* Reinitialize everything */ 753 return (error); 754} 755 756/* 757 * Shut down a socket associated with an nfssvc_sock structure. 758 * Should be called with the send lock set, if required. 759 * The trick here is to increment the sref at the start, so that the nfsds 760 * will stop using it and clear ns_flag at the end so that it will not be 761 * reassigned during cleanup. 762 */ 763static void 764nfsrv_zapsock(slp) 765 register struct nfssvc_sock *slp; 766{ 767 register struct nfsuid *nuidp, *nnuidp; 768 register struct nfsrv_descript *nwp, *nnwp; 769 struct socket *so; 770 struct file *fp; 771 struct nfsrv_rec *rec; 772 int s; 773 774 slp->ns_flag &= ~SLP_ALLFLAGS; 775 fp = slp->ns_fp; 776 if (fp) { 777 slp->ns_fp = (struct file *)0; 778 so = slp->ns_so; 779 so->so_rcv.sb_flags &= ~SB_UPCALL; 780 so->so_upcall = NULL; 781 so->so_upcallarg = NULL; 782 soshutdown(so, 2); 783 closef(fp, (struct proc *)0); 784 if (slp->ns_nam) 785 FREE(slp->ns_nam, M_SONAME); 786 m_freem(slp->ns_raw); 787 while ((rec = STAILQ_FIRST(&slp->ns_rec)) != NULL) { 788 STAILQ_REMOVE_HEAD(&slp->ns_rec, nr_link); 789 if (rec->nr_address) 790 FREE(rec->nr_address, M_SONAME); 791 m_freem(rec->nr_packet); 792 free(rec, M_NFSRVDESC); 793 } 794 for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0; 795 nuidp = nnuidp) { 796 nnuidp = nuidp->nu_lru.tqe_next; 797 LIST_REMOVE(nuidp, nu_hash); 798 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 799 if (nuidp->nu_flag & NU_NAM) 800 FREE(nuidp->nu_nam, M_SONAME); 801 free((caddr_t)nuidp, M_NFSUID); 802 } 803 s = splsoftclock(); 804 for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) { 805 nnwp = nwp->nd_tq.le_next; 806 LIST_REMOVE(nwp, nd_tq); 807 free((caddr_t)nwp, M_NFSRVDESC); 808 } 809 LIST_INIT(&slp->ns_tq); 810 splx(s); 811 } 812} 813 814/* 815 * Derefence a server socket structure. If it has no more references and 816 * is no longer valid, you can throw it away. 817 */ 818void 819nfsrv_slpderef(slp) 820 register struct nfssvc_sock *slp; 821{ 822 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) { 823 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 824 free((caddr_t)slp, M_NFSSVC); 825 } 826} 827 828/* 829 * Lock a socket against others. 830 */ 831int 832nfs_slplock(slp, wait) 833 register struct nfssvc_sock *slp; 834 int wait; 835{ 836 int *statep = &slp->ns_solock; 837 838 if (!wait && (*statep & NFSSTA_SNDLOCK)) 839 return(0); /* already locked, fail */ 840 while (*statep & NFSSTA_SNDLOCK) { 841 *statep |= NFSSTA_WANTSND; 842 (void) tsleep((caddr_t)statep, PZERO - 1, "nfsslplck", 0); 843 } 844 *statep |= NFSSTA_SNDLOCK; 845 return (1); 846} 847 848/* 849 * Unlock the stream socket for others. 850 */ 851void 852nfs_slpunlock(slp) 853 register struct nfssvc_sock *slp; 854{ 855 int *statep = &slp->ns_solock; 856 857 if ((*statep & NFSSTA_SNDLOCK) == 0) 858 panic("nfs slpunlock"); 859 *statep &= ~NFSSTA_SNDLOCK; 860 if (*statep & NFSSTA_WANTSND) { 861 *statep &= ~NFSSTA_WANTSND; 862 wakeup((caddr_t)statep); 863 } 864} 865 866/* 867 * Initialize the data structures for the server. 868 * Handshake with any new nfsds starting up to avoid any chance of 869 * corruption. 870 */ 871void 872nfsrv_init(terminating) 873 int terminating; 874{ 875 register struct nfssvc_sock *slp, *nslp; 876 877 if (nfssvc_sockhead_flag & SLP_INIT) 878 panic("nfsd init"); 879 nfssvc_sockhead_flag |= SLP_INIT; 880 if (terminating) { 881 for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) { 882 nslp = slp->ns_chain.tqe_next; 883 if (slp->ns_flag & SLP_VALID) 884 nfsrv_zapsock(slp); 885 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 886 free((caddr_t)slp, M_NFSSVC); 887 } 888 nfsrv_cleancache(); /* And clear out server cache */ 889 } else 890 nfs_pub.np_valid = 0; 891 892 TAILQ_INIT(&nfssvc_sockhead); 893 nfssvc_sockhead_flag &= ~SLP_INIT; 894 if (nfssvc_sockhead_flag & SLP_WANTINIT) { 895 nfssvc_sockhead_flag &= ~SLP_WANTINIT; 896 wakeup((caddr_t)&nfssvc_sockhead); 897 } 898 899 TAILQ_INIT(&nfsd_head); 900 nfsd_head_flag &= ~NFSD_CHECKSLP; 901 902 nfs_udpsock = (struct nfssvc_sock *) 903 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 904 bzero((caddr_t)nfs_udpsock, sizeof (struct nfssvc_sock)); 905 STAILQ_INIT(&nfs_udpsock->ns_rec); 906 TAILQ_INIT(&nfs_udpsock->ns_uidlruhead); 907 TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain); 908 909 nfs_cltpsock = (struct nfssvc_sock *) 910 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 911 bzero((caddr_t)nfs_cltpsock, sizeof (struct nfssvc_sock)); 912 STAILQ_INIT(&nfs_cltpsock->ns_rec); 913 TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead); 914 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain); 915} 916 917/* 918 * Add entries to the server monitor log. 919 */ 920static void 921nfsd_rt(sotype, nd, cacherep) 922 int sotype; 923 register struct nfsrv_descript *nd; 924 int cacherep; 925{ 926 register struct drt *rt; 927 928 rt = &nfsdrt.drt[nfsdrt.pos]; 929 if (cacherep == RC_DOIT) 930 rt->flag = 0; 931 else if (cacherep == RC_REPLY) 932 rt->flag = DRT_CACHEREPLY; 933 else 934 rt->flag = DRT_CACHEDROP; 935 if (sotype == SOCK_STREAM) 936 rt->flag |= DRT_TCP; 937 if (nd->nd_flag & ND_NQNFS) 938 rt->flag |= DRT_NQNFS; 939 else if (nd->nd_flag & ND_NFSV3) 940 rt->flag |= DRT_NFSV3; 941 rt->proc = nd->nd_procnum; 942 if (nd->nd_nam->sa_family == AF_INET) 943 rt->ipadr = ((struct sockaddr_in *)nd->nd_nam)->sin_addr.s_addr; 944 else 945 rt->ipadr = INADDR_ANY; 946 rt->resptime = nfs_curusec() - (nd->nd_starttime.tv_sec * 1000000 + nd->nd_starttime.tv_usec); 947 getmicrotime(&rt->tstamp); 948 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 949} 950#endif /* NFS_NOSERVER */ 951 952static int nfs_defect = 0; 953SYSCTL_INT(_vfs_nfs, OID_AUTO, defect, CTLFLAG_RW, &nfs_defect, 0, ""); 954 955/* 956 * Asynchronous I/O daemons for client nfs. 957 * They do read-ahead and write-behind operations on the block I/O cache. 958 * Never returns unless it fails or gets killed. 959 */ 960static int 961nfssvc_iod(p) 962 struct proc *p; 963{ 964 register struct buf *bp; 965 register int i, myiod; 966 struct nfsmount *nmp; 967 int error = 0; 968 969 /* 970 * Assign my position or return error if too many already running 971 */ 972 myiod = -1; 973 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 974 if (nfs_asyncdaemon[i] == 0) { 975 nfs_asyncdaemon[i]++; 976 myiod = i; 977 break; 978 } 979 if (myiod == -1) 980 return (EBUSY); 981 nfs_numasync++; 982 /* 983 * Just loop around doin our stuff until SIGKILL 984 */ 985 for (;;) { 986 while (((nmp = nfs_iodmount[myiod]) == NULL 987 || nmp->nm_bufq.tqh_first == NULL) 988 && error == 0) { 989 if (nmp) 990 nmp->nm_bufqiods--; 991 nfs_iodwant[myiod] = p; 992 nfs_iodmount[myiod] = NULL; 993 error = tsleep((caddr_t)&nfs_iodwant[myiod], 994 PWAIT | PCATCH, "nfsidl", 0); 995 } 996 if (error) { 997 nfs_asyncdaemon[myiod] = 0; 998 if (nmp) 999 nmp->nm_bufqiods--; 1000 nfs_iodwant[myiod] = NULL; 1001 nfs_iodmount[myiod] = NULL; 1002 nfs_numasync--; 1003 return (error); 1004 } 1005 while ((bp = nmp->nm_bufq.tqh_first) != NULL) { 1006 /* Take one off the front of the list */ 1007 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 1008 nmp->nm_bufqlen--; 1009 if (nmp->nm_bufqwant && nmp->nm_bufqlen < 2 * nfs_numasync) { 1010 nmp->nm_bufqwant = FALSE; 1011 wakeup(&nmp->nm_bufq); 1012 } 1013 if (bp->b_flags & B_READ) 1014 (void) nfs_doio(bp, bp->b_rcred, (struct proc *)0); 1015 else 1016 (void) nfs_doio(bp, bp->b_wcred, (struct proc *)0); 1017 /* 1018 * If there are more than one iod on this mount, then defect 1019 * so that the iods can be shared out fairly between the mounts 1020 */ 1021 if (nfs_defect && nmp->nm_bufqiods > 1) { 1022 NFS_DPF(ASYNCIO, 1023 ("nfssvc_iod: iod %d defecting from mount %p\n", 1024 myiod, nmp)); 1025 nfs_iodmount[myiod] = NULL; 1026 nmp->nm_bufqiods--; 1027 break; 1028 } 1029 } 1030 } 1031} 1032 1033 1034/* 1035 * Get an authorization string for the uid by having the mount_nfs sitting 1036 * on this mount point porpous out of the kernel and do it. 1037 */ 1038int 1039nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1040 register struct nfsmount *nmp; 1041 struct nfsreq *rep; 1042 struct ucred *cred; 1043 char **auth_str; 1044 int *auth_len; 1045 char *verf_str; 1046 int *verf_len; 1047 NFSKERBKEY_T key; /* return session key */ 1048{ 1049 int error = 0; 1050 1051 while ((nmp->nm_state & NFSSTA_WAITAUTH) == 0) { 1052 nmp->nm_state |= NFSSTA_WANTAUTH; 1053 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK, 1054 "nfsauth1", 2 * hz); 1055 error = nfs_sigintr(nmp, rep, rep->r_procp); 1056 if (error) { 1057 nmp->nm_state &= ~NFSSTA_WANTAUTH; 1058 return (error); 1059 } 1060 } 1061 nmp->nm_state &= ~(NFSSTA_WAITAUTH | NFSSTA_WANTAUTH); 1062 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1063 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1064 nmp->nm_verfstr = verf_str; 1065 nmp->nm_verflen = *verf_len; 1066 nmp->nm_authuid = cred->cr_uid; 1067 wakeup((caddr_t)&nmp->nm_authstr); 1068 1069 /* 1070 * And wait for mount_nfs to do its stuff. 1071 */ 1072 while ((nmp->nm_state & NFSSTA_HASAUTH) == 0 && error == 0) { 1073 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK, 1074 "nfsauth2", 2 * hz); 1075 error = nfs_sigintr(nmp, rep, rep->r_procp); 1076 } 1077 if (nmp->nm_state & NFSSTA_AUTHERR) { 1078 nmp->nm_state &= ~NFSSTA_AUTHERR; 1079 error = EAUTH; 1080 } 1081 if (error) 1082 free((caddr_t)*auth_str, M_TEMP); 1083 else { 1084 *auth_len = nmp->nm_authlen; 1085 *verf_len = nmp->nm_verflen; 1086 bcopy((caddr_t)nmp->nm_key, (caddr_t)key, sizeof (key)); 1087 } 1088 nmp->nm_state &= ~NFSSTA_HASAUTH; 1089 nmp->nm_state |= NFSSTA_WAITAUTH; 1090 if (nmp->nm_state & NFSSTA_WANTAUTH) { 1091 nmp->nm_state &= ~NFSSTA_WANTAUTH; 1092 wakeup((caddr_t)&nmp->nm_authtype); 1093 } 1094 return (error); 1095} 1096 1097/* 1098 * Get a nickname authenticator and verifier. 1099 */ 1100int 1101nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len) 1102 struct nfsmount *nmp; 1103 struct ucred *cred; 1104 char **auth_str; 1105 int *auth_len; 1106 char *verf_str; 1107 int verf_len; 1108{ 1109 register struct nfsuid *nuidp; 1110 register u_int32_t *nickp, *verfp; 1111 struct timeval ktvin, ktvout; 1112 1113#ifdef DIAGNOSTIC 1114 if (verf_len < (4 * NFSX_UNSIGNED)) 1115 panic("nfs_getnickauth verf too small"); 1116#endif 1117 for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first; 1118 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 1119 if (nuidp->nu_cr.cr_uid == cred->cr_uid) 1120 break; 1121 } 1122 if (!nuidp || nuidp->nu_expire < time_second) 1123 return (EACCES); 1124 1125 /* 1126 * Move to the end of the lru list (end of lru == most recently used). 1127 */ 1128 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1129 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1130 1131 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1132 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1133 *nickp = txdr_unsigned(nuidp->nu_nickname); 1134 *auth_str = (char *)nickp; 1135 *auth_len = 2 * NFSX_UNSIGNED; 1136 1137 /* 1138 * Now we must encrypt the verifier and package it up. 1139 */ 1140 verfp = (u_int32_t *)verf_str; 1141 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1142 if (time_second > nuidp->nu_timestamp.tv_sec || 1143 (time_second == nuidp->nu_timestamp.tv_sec && 1144 time_second > nuidp->nu_timestamp.tv_usec)) 1145 getmicrotime(&nuidp->nu_timestamp); 1146 else 1147 nuidp->nu_timestamp.tv_usec++; 1148 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1149 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1150 1151 /* 1152 * Now encrypt the timestamp verifier in ecb mode using the session 1153 * key. 1154 */ 1155#ifdef NFSKERB 1156 XXX 1157#endif 1158 1159 *verfp++ = ktvout.tv_sec; 1160 *verfp++ = ktvout.tv_usec; 1161 *verfp = 0; 1162 return (0); 1163} 1164 1165/* 1166 * Save the current nickname in a hash list entry on the mount point. 1167 */ 1168int 1169nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1170 register struct nfsmount *nmp; 1171 struct ucred *cred; 1172 int len; 1173 NFSKERBKEY_T key; 1174 struct mbuf **mdp; 1175 char **dposp; 1176 struct mbuf *mrep; 1177{ 1178 register struct nfsuid *nuidp; 1179 register u_int32_t *tl; 1180 register int32_t t1; 1181 struct mbuf *md = *mdp; 1182 struct timeval ktvin, ktvout; 1183 u_int32_t nick; 1184 char *dpos = *dposp, *cp2; 1185 int deltasec, error = 0; 1186 1187 if (len == (3 * NFSX_UNSIGNED)) { 1188 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1189 ktvin.tv_sec = *tl++; 1190 ktvin.tv_usec = *tl++; 1191 nick = fxdr_unsigned(u_int32_t, *tl); 1192 1193 /* 1194 * Decrypt the timestamp in ecb mode. 1195 */ 1196#ifdef NFSKERB 1197 XXX 1198#endif 1199 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1200 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1201 deltasec = time_second - ktvout.tv_sec; 1202 if (deltasec < 0) 1203 deltasec = -deltasec; 1204 /* 1205 * If ok, add it to the hash list for the mount point. 1206 */ 1207 if (deltasec <= NFS_KERBCLOCKSKEW) { 1208 if (nmp->nm_numuids < nuidhash_max) { 1209 nmp->nm_numuids++; 1210 nuidp = (struct nfsuid *) 1211 malloc(sizeof (struct nfsuid), M_NFSUID, 1212 M_WAITOK); 1213 } else { 1214 nuidp = nmp->nm_uidlruhead.tqh_first; 1215 LIST_REMOVE(nuidp, nu_hash); 1216 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1217 nu_lru); 1218 } 1219 nuidp->nu_flag = 0; 1220 nuidp->nu_cr.cr_uid = cred->cr_uid; 1221 nuidp->nu_expire = time_second + NFS_KERBTTL; 1222 nuidp->nu_timestamp = ktvout; 1223 nuidp->nu_nickname = nick; 1224 bcopy(key, nuidp->nu_key, sizeof (key)); 1225 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1226 nu_lru); 1227 LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid), 1228 nuidp, nu_hash); 1229 } 1230 } else 1231 nfsm_adv(nfsm_rndup(len)); 1232nfsmout: 1233 *mdp = md; 1234 *dposp = dpos; 1235 return (error); 1236} 1237