nfs_syscalls.c revision 1.48.4.2
1 /* $NetBSD: nfs_syscalls.c,v 1.48.4.2 2002/06/23 17:51:49 jdolecek 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 <sys/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: nfs_syscalls.c,v 1.48.4.2 2002/06/23 17:51:49 jdolecek Exp $"); 43 44 #include "fs_nfs.h" 45 #include "opt_nfs.h" 46 #include "opt_nfsserver.h" 47 #include "opt_iso.h" 48 #include "opt_inet.h" 49 #include "opt_compat_netbsd.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/file.h> 55 #include <sys/stat.h> 56 #include <sys/vnode.h> 57 #include <sys/mount.h> 58 #include <sys/proc.h> 59 #include <sys/uio.h> 60 #include <sys/malloc.h> 61 #include <sys/buf.h> 62 #include <sys/mbuf.h> 63 #include <sys/socket.h> 64 #include <sys/socketvar.h> 65 #include <sys/signalvar.h> 66 #include <sys/domain.h> 67 #include <sys/protosw.h> 68 #include <sys/namei.h> 69 #include <sys/syslog.h> 70 #include <sys/filedesc.h> 71 #include <sys/kthread.h> 72 73 #include <sys/syscallargs.h> 74 75 #include <netinet/in.h> 76 #include <netinet/tcp.h> 77 #ifdef ISO 78 #include <netiso/iso.h> 79 #endif 80 #include <nfs/xdr_subs.h> 81 #include <nfs/rpcv2.h> 82 #include <nfs/nfsproto.h> 83 #include <nfs/nfs.h> 84 #include <nfs/nfsm_subs.h> 85 #include <nfs/nfsrvcache.h> 86 #include <nfs/nfsmount.h> 87 #include <nfs/nfsnode.h> 88 #include <nfs/nqnfs.h> 89 #include <nfs/nfsrtt.h> 90 #include <nfs/nfs_var.h> 91 92 /* Global defs. */ 93 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *, 94 struct nfssvc_sock *, 95 struct proc *, struct mbuf **)); 96 extern time_t nqnfsstarttime; 97 extern int nfsrvw_procrastinate; 98 99 struct nfssvc_sock *nfs_udpsock; 100 #ifdef ISO 101 struct nfssvc_sock *nfs_cltpsock; 102 #endif 103 #ifdef INET6 104 struct nfssvc_sock *nfs_udp6sock; 105 #endif 106 int nuidhash_max = NFS_MAXUIDHASH; 107 int nfsd_waiting = 0; 108 #ifdef NFSSERVER 109 static int nfs_numnfsd = 0; 110 static int notstarted = 1; 111 static int modify_flag = 0; 112 static struct nfsdrt nfsdrt; 113 #endif 114 115 struct nfssvc_sockhead nfssvc_sockhead; 116 struct nfsdhead nfsd_head; 117 118 int nfssvc_sockhead_flag; 119 int nfsd_head_flag; 120 121 #define TRUE 1 122 #define FALSE 0 123 124 #ifdef NFS 125 static struct proc *nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 126 int nfs_niothreads = -1; /* == "0, and has never been set" */ 127 #endif 128 129 #ifdef NFSSERVER 130 static void nfsd_rt __P((int, struct nfsrv_descript *, int)); 131 #endif 132 133 /* 134 * NFS server system calls 135 */ 136 137 138 /* 139 * Nfs server pseudo system call for the nfsd's 140 * Based on the flag value it either: 141 * - adds a socket to the selection list 142 * - remains in the kernel as an nfsd 143 * - remains in the kernel as an nfsiod 144 */ 145 int 146 sys_nfssvc(p, v, retval) 147 struct proc *p; 148 void *v; 149 register_t *retval; 150 { 151 struct sys_nfssvc_args /* { 152 syscallarg(int) flag; 153 syscallarg(caddr_t) argp; 154 } */ *uap = v; 155 int error; 156 #ifdef NFS 157 struct nameidata nd; 158 struct nfsmount *nmp; 159 struct nfsd_cargs ncd; 160 #endif 161 #ifdef NFSSERVER 162 struct file *fp; 163 struct mbuf *nam; 164 struct nfsd_args nfsdarg; 165 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 166 struct nfsd *nfsd; 167 struct nfssvc_sock *slp; 168 struct nfsuid *nuidp; 169 #endif 170 171 /* 172 * Must be super user 173 */ 174 error = suser(p->p_ucred, &p->p_acflag); 175 if(error) 176 return (error); 177 while (nfssvc_sockhead_flag & SLP_INIT) { 178 nfssvc_sockhead_flag |= SLP_WANTINIT; 179 (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0); 180 } 181 if (SCARG(uap, flag) & NFSSVC_BIOD) { 182 #if defined(NFS) && defined(COMPAT_14) 183 error = nfssvc_iod(p); 184 #else 185 error = ENOSYS; 186 #endif 187 } else if (SCARG(uap, flag) & NFSSVC_MNTD) { 188 #ifndef NFS 189 error = ENOSYS; 190 #else 191 error = copyin(SCARG(uap, argp), (caddr_t)&ncd, sizeof (ncd)); 192 if (error) 193 return (error); 194 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, 195 ncd.ncd_dirp, p); 196 error = namei(&nd); 197 if (error) 198 return (error); 199 if ((nd.ni_vp->v_flag & VROOT) == 0) 200 error = EINVAL; 201 nmp = VFSTONFS(nd.ni_vp->v_mount); 202 vput(nd.ni_vp); 203 if (error) 204 return (error); 205 if ((nmp->nm_iflag & NFSMNT_MNTD) && 206 (SCARG(uap, flag) & NFSSVC_GOTAUTH) == 0) 207 return (0); 208 nmp->nm_iflag |= NFSMNT_MNTD; 209 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, SCARG(uap, flag), 210 SCARG(uap, argp), p); 211 #endif /* NFS */ 212 } else if (SCARG(uap, flag) & NFSSVC_ADDSOCK) { 213 #ifndef NFSSERVER 214 error = ENOSYS; 215 #else 216 error = copyin(SCARG(uap, argp), (caddr_t)&nfsdarg, 217 sizeof(nfsdarg)); 218 if (error) 219 return (error); 220 /* getsock() will use the descriptor for us */ 221 error = getsock(p->p_fd, nfsdarg.sock, &fp); 222 if (error) 223 return (error); 224 /* 225 * Get the client address for connected sockets. 226 */ 227 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 228 nam = (struct mbuf *)0; 229 else { 230 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen, 231 MT_SONAME); 232 if (error) { 233 FILE_UNUSE(fp, NULL); 234 return (error); 235 } 236 } 237 error = nfssvc_addsock(fp, nam); 238 FILE_UNUSE(fp, NULL); 239 #endif /* !NFSSERVER */ 240 } else { 241 #ifndef NFSSERVER 242 error = ENOSYS; 243 #else 244 error = copyin(SCARG(uap, argp), (caddr_t)nsd, sizeof (*nsd)); 245 if (error) 246 return (error); 247 if ((SCARG(uap, flag) & NFSSVC_AUTHIN) && 248 ((nfsd = nsd->nsd_nfsd)) != NULL && 249 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 250 slp = nfsd->nfsd_slp; 251 252 /* 253 * First check to see if another nfsd has already 254 * added this credential. 255 */ 256 for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first; 257 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 258 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid && 259 (!nfsd->nfsd_nd->nd_nam2 || 260 netaddr_match(NU_NETFAM(nuidp), 261 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 262 break; 263 } 264 if (nuidp) { 265 nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr); 266 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 267 } else { 268 /* 269 * Nope, so we will. 270 */ 271 if (slp->ns_numuids < nuidhash_max) { 272 slp->ns_numuids++; 273 nuidp = (struct nfsuid *) 274 malloc(sizeof (struct nfsuid), M_NFSUID, 275 M_WAITOK); 276 } else 277 nuidp = (struct nfsuid *)0; 278 if ((slp->ns_flag & SLP_VALID) == 0) { 279 if (nuidp) 280 free((caddr_t)nuidp, M_NFSUID); 281 } else { 282 if (nuidp == (struct nfsuid *)0) { 283 nuidp = slp->ns_uidlruhead.tqh_first; 284 LIST_REMOVE(nuidp, nu_hash); 285 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 286 nu_lru); 287 if (nuidp->nu_flag & NU_NAM) 288 m_freem(nuidp->nu_nam); 289 } 290 nuidp->nu_flag = 0; 291 crcvt(&nuidp->nu_cr, &nsd->nsd_cr); 292 if (nuidp->nu_cr.cr_ngroups > NGROUPS) 293 nuidp->nu_cr.cr_ngroups = NGROUPS; 294 nuidp->nu_cr.cr_ref = 1; 295 nuidp->nu_timestamp = nsd->nsd_timestamp; 296 nuidp->nu_expire = time.tv_sec + nsd->nsd_ttl; 297 /* 298 * and save the session key in nu_key. 299 */ 300 memcpy(nuidp->nu_key, nsd->nsd_key, 301 sizeof(nsd->nsd_key)); 302 if (nfsd->nfsd_nd->nd_nam2) { 303 struct sockaddr_in *saddr; 304 305 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 306 struct sockaddr_in *); 307 switch (saddr->sin_family) { 308 case AF_INET: 309 nuidp->nu_flag |= NU_INETADDR; 310 nuidp->nu_inetaddr = 311 saddr->sin_addr.s_addr; 312 break; 313 case AF_ISO: 314 default: 315 nuidp->nu_flag |= NU_NAM; 316 nuidp->nu_nam = m_copym( 317 nfsd->nfsd_nd->nd_nam2, 0, 318 M_COPYALL, M_WAIT); 319 break; 320 }; 321 } 322 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 323 nu_lru); 324 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 325 nuidp, nu_hash); 326 nfsrv_setcred(&nuidp->nu_cr, 327 &nfsd->nfsd_nd->nd_cr); 328 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 329 } 330 } 331 } 332 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 333 (nfsd = nsd->nsd_nfsd)) 334 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 335 error = nfssvc_nfsd(nsd, SCARG(uap, argp), p); 336 #endif /* !NFSSERVER */ 337 } 338 if (error == EINTR || error == ERESTART) 339 error = 0; 340 return (error); 341 } 342 343 #ifdef NFSSERVER 344 /* 345 * Adds a socket to the list for servicing by nfsds. 346 */ 347 int 348 nfssvc_addsock(fp, mynam) 349 struct file *fp; 350 struct mbuf *mynam; 351 { 352 struct mbuf *m; 353 int siz; 354 struct nfssvc_sock *slp; 355 struct socket *so; 356 struct nfssvc_sock *tslp; 357 int error, s; 358 359 so = (struct socket *)fp->f_data; 360 tslp = (struct nfssvc_sock *)0; 361 /* 362 * Add it to the list, as required. 363 */ 364 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 365 #ifdef INET6 366 if (so->so_proto->pr_domain->dom_family == AF_INET6) 367 tslp = nfs_udp6sock; 368 else 369 #endif 370 tslp = nfs_udpsock; 371 if (tslp->ns_flag & SLP_VALID) { 372 m_freem(mynam); 373 return (EPERM); 374 } 375 #ifdef ISO 376 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 377 tslp = nfs_cltpsock; 378 if (tslp->ns_flag & SLP_VALID) { 379 m_freem(mynam); 380 return (EPERM); 381 } 382 #endif /* ISO */ 383 } 384 if (so->so_type == SOCK_STREAM) 385 siz = NFS_MAXPACKET + sizeof (u_long); 386 else 387 siz = NFS_MAXPACKET; 388 error = soreserve(so, siz, siz); 389 if (error) { 390 m_freem(mynam); 391 return (error); 392 } 393 394 /* 395 * Set protocol specific options { for now TCP only } and 396 * reserve some space. For datagram sockets, this can get called 397 * repeatedly for the same socket, but that isn't harmful. 398 */ 399 if (so->so_type == SOCK_STREAM) { 400 MGET(m, M_WAIT, MT_SOOPTS); 401 *mtod(m, int32_t *) = 1; 402 m->m_len = sizeof(int32_t); 403 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m); 404 } 405 if ((so->so_proto->pr_domain->dom_family == AF_INET 406 #ifdef INET6 407 || so->so_proto->pr_domain->dom_family == AF_INET6 408 #endif 409 ) && 410 so->so_proto->pr_protocol == IPPROTO_TCP) { 411 MGET(m, M_WAIT, MT_SOOPTS); 412 *mtod(m, int32_t *) = 1; 413 m->m_len = sizeof(int32_t); 414 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m); 415 } 416 so->so_rcv.sb_flags &= ~SB_NOINTR; 417 so->so_rcv.sb_timeo = 0; 418 so->so_snd.sb_flags &= ~SB_NOINTR; 419 so->so_snd.sb_timeo = 0; 420 if (tslp) 421 slp = tslp; 422 else { 423 slp = (struct nfssvc_sock *) 424 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 425 memset((caddr_t)slp, 0, sizeof (struct nfssvc_sock)); 426 TAILQ_INIT(&slp->ns_uidlruhead); 427 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 428 } 429 slp->ns_so = so; 430 slp->ns_nam = mynam; 431 fp->f_count++; 432 slp->ns_fp = fp; 433 s = splsoftnet(); 434 so->so_upcallarg = (caddr_t)slp; 435 so->so_upcall = nfsrv_rcv; 436 so->so_rcv.sb_flags |= SB_UPCALL; 437 slp->ns_flag = (SLP_VALID | SLP_NEEDQ); 438 nfsrv_wakenfsd(slp); 439 splx(s); 440 return (0); 441 } 442 443 /* 444 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 445 * until it is killed by a signal. 446 */ 447 int 448 nfssvc_nfsd(nsd, argp, p) 449 struct nfsd_srvargs *nsd; 450 caddr_t argp; 451 struct proc *p; 452 { 453 struct mbuf *m; 454 int siz; 455 struct nfssvc_sock *slp; 456 struct socket *so; 457 int *solockp; 458 struct nfsd *nfsd = nsd->nsd_nfsd; 459 struct nfsrv_descript *nd = NULL; 460 struct mbuf *mreq; 461 int error = 0, cacherep, s, sotype, writes_todo; 462 u_quad_t cur_usec; 463 464 #ifndef nolint 465 cacherep = RC_DOIT; 466 writes_todo = 0; 467 #endif 468 s = splsoftnet(); 469 if (nfsd == (struct nfsd *)0) { 470 nsd->nsd_nfsd = nfsd = (struct nfsd *) 471 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 472 memset((caddr_t)nfsd, 0, sizeof (struct nfsd)); 473 nfsd->nfsd_procp = p; 474 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 475 nfs_numnfsd++; 476 } 477 p->p_holdcnt++; 478 /* 479 * Loop getting rpc requests until SIGKILL. 480 */ 481 for (;;) { 482 if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) { 483 while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 484 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 485 nfsd->nfsd_flag |= NFSD_WAITING; 486 nfsd_waiting++; 487 error = tsleep((caddr_t)nfsd, PSOCK | PCATCH, 488 "nfsd", 0); 489 nfsd_waiting--; 490 if (error) 491 goto done; 492 } 493 if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 494 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 495 for (slp = nfssvc_sockhead.tqh_first; slp != 0; 496 slp = slp->ns_chain.tqe_next) { 497 if ((slp->ns_flag & (SLP_VALID | SLP_DOREC)) 498 == (SLP_VALID | SLP_DOREC)) { 499 slp->ns_flag &= ~SLP_DOREC; 500 slp->ns_sref++; 501 nfsd->nfsd_slp = slp; 502 break; 503 } 504 } 505 if (slp == 0) 506 nfsd_head_flag &= ~NFSD_CHECKSLP; 507 } 508 if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0) 509 continue; 510 if (slp->ns_flag & SLP_VALID) { 511 if (slp->ns_flag & SLP_DISCONN) 512 nfsrv_zapsock(slp); 513 else if (slp->ns_flag & SLP_NEEDQ) { 514 slp->ns_flag &= ~SLP_NEEDQ; 515 (void) nfs_sndlock(&slp->ns_solock, 516 (struct nfsreq *)0); 517 nfsrv_rcv(slp->ns_so, (caddr_t)slp, 518 M_WAIT); 519 nfs_sndunlock(&slp->ns_solock); 520 } 521 error = nfsrv_dorec(slp, nfsd, &nd); 522 cur_usec = (u_quad_t)time.tv_sec * 1000000 + 523 (u_quad_t)time.tv_usec; 524 if (error && slp->ns_tq.lh_first && 525 slp->ns_tq.lh_first->nd_time <= cur_usec) { 526 error = 0; 527 cacherep = RC_DOIT; 528 writes_todo = 1; 529 } else 530 writes_todo = 0; 531 nfsd->nfsd_flag |= NFSD_REQINPROG; 532 } 533 } else { 534 error = 0; 535 slp = nfsd->nfsd_slp; 536 } 537 if (error || (slp->ns_flag & SLP_VALID) == 0) { 538 if (nd) { 539 free((caddr_t)nd, M_NFSRVDESC); 540 nd = NULL; 541 } 542 nfsd->nfsd_slp = (struct nfssvc_sock *)0; 543 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 544 nfsrv_slpderef(slp); 545 continue; 546 } 547 splx(s); 548 so = slp->ns_so; 549 sotype = so->so_type; 550 if (so->so_proto->pr_flags & PR_CONNREQUIRED) 551 solockp = &slp->ns_solock; 552 else 553 solockp = (int *)0; 554 if (nd) { 555 nd->nd_starttime = time; 556 if (nd->nd_nam2) 557 nd->nd_nam = nd->nd_nam2; 558 else 559 nd->nd_nam = slp->ns_nam; 560 561 /* 562 * Check to see if authorization is needed. 563 */ 564 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 565 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 566 nsd->nsd_haddr = mtod(nd->nd_nam, 567 struct sockaddr_in *)->sin_addr.s_addr; 568 nsd->nsd_authlen = nfsd->nfsd_authlen; 569 nsd->nsd_verflen = nfsd->nfsd_verflen; 570 if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr, 571 nfsd->nfsd_authlen) && 572 !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr, 573 nfsd->nfsd_verflen) && 574 !copyout((caddr_t)nsd, argp, sizeof (*nsd))) { 575 p->p_holdcnt--; 576 return (ENEEDAUTH); 577 } 578 cacherep = RC_DROPIT; 579 } else 580 cacherep = nfsrv_getcache(nd, slp, &mreq); 581 582 /* 583 * Check for just starting up for NQNFS and send 584 * fake "try again later" replies to the NQNFS clients. 585 */ 586 if (notstarted && nqnfsstarttime <= time.tv_sec) { 587 if (modify_flag) { 588 nqnfsstarttime = time.tv_sec + nqsrv_writeslack; 589 modify_flag = 0; 590 } else 591 notstarted = 0; 592 } 593 if (notstarted) { 594 if ((nd->nd_flag & ND_NQNFS) == 0) 595 cacherep = RC_DROPIT; 596 else if (nd->nd_procnum != NFSPROC_WRITE) { 597 nd->nd_procnum = NFSPROC_NOOP; 598 nd->nd_repstat = NQNFS_TRYLATER; 599 cacherep = RC_DOIT; 600 } else 601 modify_flag = 1; 602 } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 603 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 604 nd->nd_procnum = NFSPROC_NOOP; 605 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 606 cacherep = RC_DOIT; 607 } 608 } 609 610 /* 611 * Loop to get all the write rpc relies that have been 612 * gathered together. 613 */ 614 do { 615 #ifdef DIAGNOSTIC 616 int lockcount; 617 #endif 618 switch (cacherep) { 619 case RC_DOIT: 620 #ifdef DIAGNOSTIC 621 /* 622 * NFS server procs should neither release 623 * locks already held, nor leave things 624 * locked. Catch this sooner, rather than 625 * later (when we try to relock something we 626 * already have locked). Careful inspection 627 * of the failing routine usually turns up the 628 * lock leak.. once we know what it is.. 629 */ 630 lockcount = p->p_locks; 631 #endif 632 if (writes_todo || (!(nd->nd_flag & ND_NFSV3) && 633 nd->nd_procnum == NFSPROC_WRITE && 634 nfsrvw_procrastinate > 0 && !notstarted)) 635 error = nfsrv_writegather(&nd, slp, 636 nfsd->nfsd_procp, &mreq); 637 else 638 error = (*(nfsrv3_procs[nd->nd_procnum]))(nd, 639 slp, nfsd->nfsd_procp, &mreq); 640 #ifdef DIAGNOSTIC 641 if (p->p_locks != lockcount) { 642 /* 643 * If you see this panic, audit 644 * nfsrv3_procs[nd->nd_procnum] for vnode 645 * locking errors (usually, it's due to 646 * forgetting to vput() something). 647 */ 648 #ifdef DEBUG 649 extern void printlockedvnodes(void); 650 printlockedvnodes(); 651 #endif 652 printf("nfsd: locking botch in op %d" 653 " (before %d, after %d)\n", 654 nd ? nd->nd_procnum : -1, 655 lockcount, p->p_locks); 656 } 657 #endif 658 if (mreq == NULL) 659 break; 660 if (error) { 661 if (nd->nd_procnum != NQNFSPROC_VACATED) 662 nfsstats.srv_errs++; 663 nfsrv_updatecache(nd, FALSE, mreq); 664 if (nd->nd_nam2) 665 m_freem(nd->nd_nam2); 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, (struct nfsreq *)0); 695 if (slp->ns_flag & SLP_VALID) 696 error = nfs_send(so, nd->nd_nam2, m, NULL); 697 else { 698 error = EPIPE; 699 m_freem(m); 700 } 701 if (nfsrtton) 702 nfsd_rt(sotype, nd, cacherep); 703 if (nd->nd_nam2) 704 MFREE(nd->nd_nam2, m); 705 if (nd->nd_mrep) 706 m_freem(nd->nd_mrep); 707 if (error == EPIPE) 708 nfsrv_zapsock(slp); 709 if (solockp) 710 nfs_sndunlock(solockp); 711 if (error == EINTR || error == ERESTART) { 712 free((caddr_t)nd, M_NFSRVDESC); 713 nfsrv_slpderef(slp); 714 s = splsoftnet(); 715 goto done; 716 } 717 break; 718 case RC_DROPIT: 719 if (nfsrtton) 720 nfsd_rt(sotype, nd, cacherep); 721 m_freem(nd->nd_mrep); 722 m_freem(nd->nd_nam2); 723 break; 724 }; 725 if (nd) { 726 FREE((caddr_t)nd, M_NFSRVDESC); 727 nd = NULL; 728 } 729 730 /* 731 * Check to see if there are outstanding writes that 732 * need to be serviced. 733 */ 734 cur_usec = (u_quad_t)time.tv_sec * 1000000 + 735 (u_quad_t)time.tv_usec; 736 s = splsoftclock(); 737 if (slp->ns_tq.lh_first && 738 slp->ns_tq.lh_first->nd_time <= cur_usec) { 739 cacherep = RC_DOIT; 740 writes_todo = 1; 741 } else 742 writes_todo = 0; 743 splx(s); 744 } while (writes_todo); 745 s = splsoftnet(); 746 if (nfsrv_dorec(slp, nfsd, &nd)) { 747 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 748 nfsd->nfsd_slp = NULL; 749 nfsrv_slpderef(slp); 750 } 751 } 752 done: 753 p->p_holdcnt--; 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 void 771 nfsrv_zapsock(slp) 772 struct nfssvc_sock *slp; 773 { 774 struct nfsuid *nuidp, *nnuidp; 775 struct nfsrv_descript *nwp, *nnwp; 776 struct socket *so; 777 struct file *fp; 778 struct mbuf *m; 779 int s; 780 781 slp->ns_flag &= ~SLP_ALLFLAGS; 782 fp = slp->ns_fp; 783 if (fp) { 784 FILE_USE(fp); 785 slp->ns_fp = (struct file *)0; 786 so = slp->ns_so; 787 so->so_upcall = NULL; 788 so->so_upcallarg = NULL; 789 so->so_rcv.sb_flags &= ~SB_UPCALL; 790 soshutdown(so, 2); 791 closef(fp, (struct proc *)0); 792 if (slp->ns_nam) 793 MFREE(slp->ns_nam, m); 794 m_freem(slp->ns_raw); 795 m_freem(slp->ns_rec); 796 for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0; 797 nuidp = nnuidp) { 798 nnuidp = nuidp->nu_lru.tqe_next; 799 LIST_REMOVE(nuidp, nu_hash); 800 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 801 if (nuidp->nu_flag & NU_NAM) 802 m_freem(nuidp->nu_nam); 803 free((caddr_t)nuidp, M_NFSUID); 804 } 805 s = splsoftclock(); 806 for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) { 807 nnwp = nwp->nd_tq.le_next; 808 LIST_REMOVE(nwp, nd_tq); 809 free((caddr_t)nwp, M_NFSRVDESC); 810 } 811 LIST_INIT(&slp->ns_tq); 812 splx(s); 813 } 814 } 815 816 /* 817 * Derefence a server socket structure. If it has no more references and 818 * is no longer valid, you can throw it away. 819 */ 820 void 821 nfsrv_slpderef(slp) 822 struct nfssvc_sock *slp; 823 { 824 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) { 825 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 826 free((caddr_t)slp, M_NFSSVC); 827 } 828 } 829 830 /* 831 * Initialize the data structures for the server. 832 * Handshake with any new nfsds starting up to avoid any chance of 833 * corruption. 834 */ 835 void 836 nfsrv_init(terminating) 837 int terminating; 838 { 839 struct nfssvc_sock *slp, *nslp; 840 841 if (nfssvc_sockhead_flag & SLP_INIT) 842 panic("nfsd init"); 843 nfssvc_sockhead_flag |= SLP_INIT; 844 if (terminating) { 845 for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) { 846 nslp = slp->ns_chain.tqe_next; 847 if (slp->ns_flag & SLP_VALID) 848 nfsrv_zapsock(slp); 849 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 850 free((caddr_t)slp, M_NFSSVC); 851 } 852 nfsrv_cleancache(); /* And clear out server cache */ 853 } else 854 nfs_pub.np_valid = 0; 855 856 TAILQ_INIT(&nfssvc_sockhead); 857 nfssvc_sockhead_flag &= ~SLP_INIT; 858 if (nfssvc_sockhead_flag & SLP_WANTINIT) { 859 nfssvc_sockhead_flag &= ~SLP_WANTINIT; 860 wakeup((caddr_t)&nfssvc_sockhead); 861 } 862 863 TAILQ_INIT(&nfsd_head); 864 nfsd_head_flag &= ~NFSD_CHECKSLP; 865 866 nfs_udpsock = (struct nfssvc_sock *) 867 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 868 memset((caddr_t)nfs_udpsock, 0, sizeof (struct nfssvc_sock)); 869 TAILQ_INIT(&nfs_udpsock->ns_uidlruhead); 870 TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain); 871 872 #ifdef INET6 873 nfs_udp6sock = (struct nfssvc_sock *) 874 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 875 memset((caddr_t)nfs_udp6sock, 0, sizeof (struct nfssvc_sock)); 876 TAILQ_INIT(&nfs_udp6sock->ns_uidlruhead); 877 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_udp6sock, ns_chain); 878 #endif 879 880 #ifdef ISO 881 nfs_cltpsock = (struct nfssvc_sock *) 882 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 883 memset((caddr_t)nfs_cltpsock, 0, sizeof (struct nfssvc_sock)); 884 TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead); 885 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain); 886 #endif 887 } 888 889 /* 890 * Add entries to the server monitor log. 891 */ 892 static void 893 nfsd_rt(sotype, nd, cacherep) 894 int sotype; 895 struct nfsrv_descript *nd; 896 int cacherep; 897 { 898 struct drt *rt; 899 900 rt = &nfsdrt.drt[nfsdrt.pos]; 901 if (cacherep == RC_DOIT) 902 rt->flag = 0; 903 else if (cacherep == RC_REPLY) 904 rt->flag = DRT_CACHEREPLY; 905 else 906 rt->flag = DRT_CACHEDROP; 907 if (sotype == SOCK_STREAM) 908 rt->flag |= DRT_TCP; 909 if (nd->nd_flag & ND_NQNFS) 910 rt->flag |= DRT_NQNFS; 911 else if (nd->nd_flag & ND_NFSV3) 912 rt->flag |= DRT_NFSV3; 913 rt->proc = nd->nd_procnum; 914 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 915 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 916 else 917 rt->ipadr = INADDR_ANY; 918 rt->resptime = ((time.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 919 (time.tv_usec - nd->nd_starttime.tv_usec); 920 rt->tstamp = time; 921 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 922 } 923 #endif /* NFSSERVER */ 924 925 #ifdef NFS 926 927 int nfs_defect = 0; 928 /* 929 * Asynchronous I/O threads for client nfs. 930 * They do read-ahead and write-behind operations on the block I/O cache. 931 * Never returns unless it fails or gets killed. 932 */ 933 934 int 935 nfssvc_iod(p) 936 struct proc *p; 937 { 938 struct buf *bp; 939 int i, myiod; 940 struct nfsmount *nmp; 941 int error = 0; 942 943 /* 944 * Assign my position or return error if too many already running 945 */ 946 myiod = -1; 947 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 948 if (nfs_asyncdaemon[i] == NULL) { 949 myiod = i; 950 break; 951 } 952 if (myiod == -1) 953 return (EBUSY); 954 nfs_asyncdaemon[myiod] = p; 955 nfs_numasync++; 956 p->p_holdcnt++; 957 /* 958 * Just loop around doing our stuff until SIGKILL 959 */ 960 for (;;) { 961 while (((nmp = nfs_iodmount[myiod]) == NULL 962 || nmp->nm_bufq.tqh_first == NULL) 963 && error == 0) { 964 if (nmp) 965 nmp->nm_bufqiods--; 966 nfs_iodwant[myiod] = p; 967 nfs_iodmount[myiod] = NULL; 968 error = tsleep((caddr_t)&nfs_iodwant[myiod], 969 PWAIT | PCATCH, "nfsidl", 0); 970 } 971 while (nmp != NULL && (bp = nmp->nm_bufq.tqh_first) != NULL) { 972 /* Take one off the front of the list */ 973 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 974 nmp->nm_bufqlen--; 975 if (nmp->nm_bufqwant && nmp->nm_bufqlen < 2 * nfs_numasync) { 976 nmp->nm_bufqwant = FALSE; 977 wakeup(&nmp->nm_bufq); 978 } 979 (void) nfs_doio(bp, NULL); 980 /* 981 * If there are more than one iod on this mount, then defect 982 * so that the iods can be shared out fairly between the mounts 983 */ 984 if (nfs_defect && nmp->nm_bufqiods > 1) { 985 nfs_iodmount[myiod] = NULL; 986 nmp->nm_bufqiods--; 987 break; 988 } 989 } 990 if (error) { 991 break; 992 } 993 } 994 p->p_holdcnt--; 995 if (nmp) 996 nmp->nm_bufqiods--; 997 nfs_iodwant[myiod] = NULL; 998 nfs_iodmount[myiod] = NULL; 999 nfs_asyncdaemon[myiod] = NULL; 1000 nfs_numasync--; 1001 1002 return (error); 1003 } 1004 1005 void 1006 start_nfsio(arg) 1007 void *arg; 1008 { 1009 nfssvc_iod(curproc); 1010 1011 kthread_exit(0); 1012 } 1013 1014 void 1015 nfs_getset_niothreads(set) 1016 int set; 1017 { 1018 int i, have, start; 1019 1020 for (have = 0, i = 0; i < NFS_MAXASYNCDAEMON; i++) 1021 if (nfs_asyncdaemon[i] != NULL) 1022 have++; 1023 1024 if (set) { 1025 /* clamp to sane range */ 1026 nfs_niothreads = max(0, min(nfs_niothreads, NFS_MAXASYNCDAEMON)); 1027 1028 start = nfs_niothreads - have; 1029 1030 while (start > 0) { 1031 kthread_create1(start_nfsio, NULL, NULL, "nfsio"); 1032 start--; 1033 } 1034 1035 for (i = 0; (start < 0) && (i < NFS_MAXASYNCDAEMON); i++) 1036 if (nfs_asyncdaemon[i] != NULL) { 1037 psignal(nfs_asyncdaemon[i], SIGKILL); 1038 start++; 1039 } 1040 } else { 1041 if (nfs_niothreads >= 0) 1042 nfs_niothreads = have; 1043 } 1044 } 1045 1046 /* 1047 * Get an authorization string for the uid by having the mount_nfs sitting 1048 * on this mount point porpous out of the kernel and do it. 1049 */ 1050 int 1051 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1052 struct nfsmount *nmp; 1053 struct nfsreq *rep; 1054 struct ucred *cred; 1055 char **auth_str; 1056 int *auth_len; 1057 char *verf_str; 1058 int *verf_len; 1059 NFSKERBKEY_T key; /* return session key */ 1060 { 1061 int error = 0; 1062 1063 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1064 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1065 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK, 1066 "nfsauth1", 2 * hz); 1067 error = nfs_sigintr(nmp, rep, rep->r_procp); 1068 if (error) { 1069 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1070 return (error); 1071 } 1072 } 1073 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1074 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1075 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1076 nmp->nm_verfstr = verf_str; 1077 nmp->nm_verflen = *verf_len; 1078 nmp->nm_authuid = cred->cr_uid; 1079 wakeup((caddr_t)&nmp->nm_authstr); 1080 1081 /* 1082 * And wait for mount_nfs to do its stuff. 1083 */ 1084 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1085 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK, 1086 "nfsauth2", 2 * hz); 1087 error = nfs_sigintr(nmp, rep, rep->r_procp); 1088 } 1089 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1090 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1091 error = EAUTH; 1092 } 1093 if (error) 1094 free((caddr_t)*auth_str, M_TEMP); 1095 else { 1096 *auth_len = nmp->nm_authlen; 1097 *verf_len = nmp->nm_verflen; 1098 memcpy((caddr_t)key, (caddr_t)nmp->nm_key, sizeof (key)); 1099 } 1100 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1101 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1102 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1103 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1104 wakeup((caddr_t)&nmp->nm_authtype); 1105 } 1106 return (error); 1107 } 1108 1109 /* 1110 * Get a nickname authenticator and verifier. 1111 */ 1112 int 1113 nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len) 1114 struct nfsmount *nmp; 1115 struct ucred *cred; 1116 char **auth_str; 1117 int *auth_len; 1118 char *verf_str; 1119 int verf_len; 1120 { 1121 struct nfsuid *nuidp; 1122 u_int32_t *nickp, *verfp; 1123 struct timeval ktvin, ktvout; 1124 1125 #ifdef DIAGNOSTIC 1126 if (verf_len < (4 * NFSX_UNSIGNED)) 1127 panic("nfs_getnickauth verf too small"); 1128 #endif 1129 for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first; 1130 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 1131 if (nuidp->nu_cr.cr_uid == cred->cr_uid) 1132 break; 1133 } 1134 if (!nuidp || nuidp->nu_expire < time.tv_sec) 1135 return (EACCES); 1136 1137 /* 1138 * Move to the end of the lru list (end of lru == most recently used). 1139 */ 1140 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1141 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1142 1143 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1144 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1145 *nickp = txdr_unsigned(nuidp->nu_nickname); 1146 *auth_str = (char *)nickp; 1147 *auth_len = 2 * NFSX_UNSIGNED; 1148 1149 /* 1150 * Now we must encrypt the verifier and package it up. 1151 */ 1152 verfp = (u_int32_t *)verf_str; 1153 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1154 if (time.tv_sec > nuidp->nu_timestamp.tv_sec || 1155 (time.tv_sec == nuidp->nu_timestamp.tv_sec && 1156 time.tv_usec > nuidp->nu_timestamp.tv_usec)) 1157 nuidp->nu_timestamp = time; 1158 else 1159 nuidp->nu_timestamp.tv_usec++; 1160 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1161 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1162 1163 /* 1164 * Now encrypt the timestamp verifier in ecb mode using the session 1165 * key. 1166 */ 1167 #ifdef NFSKERB 1168 XXX 1169 #endif 1170 1171 *verfp++ = ktvout.tv_sec; 1172 *verfp++ = ktvout.tv_usec; 1173 *verfp = 0; 1174 return (0); 1175 } 1176 1177 /* 1178 * Save the current nickname in a hash list entry on the mount point. 1179 */ 1180 int 1181 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1182 struct nfsmount *nmp; 1183 struct ucred *cred; 1184 int len; 1185 NFSKERBKEY_T key; 1186 struct mbuf **mdp; 1187 char **dposp; 1188 struct mbuf *mrep; 1189 { 1190 struct nfsuid *nuidp; 1191 u_int32_t *tl; 1192 int32_t t1; 1193 struct mbuf *md = *mdp; 1194 struct timeval ktvin, ktvout; 1195 u_int32_t nick; 1196 char *dpos = *dposp, *cp2; 1197 int deltasec, error = 0; 1198 1199 if (len == (3 * NFSX_UNSIGNED)) { 1200 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1201 ktvin.tv_sec = *tl++; 1202 ktvin.tv_usec = *tl++; 1203 nick = fxdr_unsigned(u_int32_t, *tl); 1204 1205 /* 1206 * Decrypt the timestamp in ecb mode. 1207 */ 1208 #ifdef NFSKERB 1209 XXX 1210 #endif 1211 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1212 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1213 deltasec = time.tv_sec - ktvout.tv_sec; 1214 if (deltasec < 0) 1215 deltasec = -deltasec; 1216 /* 1217 * If ok, add it to the hash list for the mount point. 1218 */ 1219 if (deltasec <= NFS_KERBCLOCKSKEW) { 1220 if (nmp->nm_numuids < nuidhash_max) { 1221 nmp->nm_numuids++; 1222 nuidp = (struct nfsuid *) 1223 malloc(sizeof (struct nfsuid), M_NFSUID, 1224 M_WAITOK); 1225 } else { 1226 nuidp = nmp->nm_uidlruhead.tqh_first; 1227 LIST_REMOVE(nuidp, nu_hash); 1228 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1229 nu_lru); 1230 } 1231 nuidp->nu_flag = 0; 1232 nuidp->nu_cr.cr_uid = cred->cr_uid; 1233 nuidp->nu_expire = time.tv_sec + NFS_KERBTTL; 1234 nuidp->nu_timestamp = ktvout; 1235 nuidp->nu_nickname = nick; 1236 memcpy(nuidp->nu_key, key, sizeof (key)); 1237 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1238 nu_lru); 1239 LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid), 1240 nuidp, nu_hash); 1241 } 1242 } else 1243 nfsm_adv(nfsm_rndup(len)); 1244 nfsmout: 1245 *mdp = md; 1246 *dposp = dpos; 1247 return (error); 1248 } 1249 #endif /* NFS */ 1250
Indexes created Tue Oct 21 16:10:11 GMT 2025