nfs_syscalls.c revision 1.96.4.4
1 /* $NetBSD: nfs_syscalls.c,v 1.96.4.4 2007/02/01 08:48:46 ad 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: nfs_syscalls.c,v 1.96.4.4 2007/02/01 08:48:46 ad Exp $"); 39 40 #include "fs_nfs.h" 41 #include "opt_nfs.h" 42 #include "opt_nfsserver.h" 43 #include "opt_iso.h" 44 #include "opt_inet.h" 45 #include "opt_compat_netbsd.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/file.h> 51 #include <sys/stat.h> 52 #include <sys/vnode.h> 53 #include <sys/mount.h> 54 #include <sys/proc.h> 55 #include <sys/uio.h> 56 #include <sys/malloc.h> 57 #include <sys/buf.h> 58 #include <sys/mbuf.h> 59 #include <sys/socket.h> 60 #include <sys/socketvar.h> 61 #include <sys/signalvar.h> 62 #include <sys/domain.h> 63 #include <sys/protosw.h> 64 #include <sys/namei.h> 65 #include <sys/syslog.h> 66 #include <sys/filedesc.h> 67 #include <sys/kthread.h> 68 #include <sys/kauth.h> 69 #include <sys/syscallargs.h> 70 71 #include <netinet/in.h> 72 #include <netinet/tcp.h> 73 #ifdef ISO 74 #include <netiso/iso.h> 75 #endif 76 #include <nfs/xdr_subs.h> 77 #include <nfs/rpcv2.h> 78 #include <nfs/nfsproto.h> 79 #include <nfs/nfs.h> 80 #include <nfs/nfsm_subs.h> 81 #include <nfs/nfsrvcache.h> 82 #include <nfs/nfsmount.h> 83 #include <nfs/nfsnode.h> 84 #include <nfs/nfsrtt.h> 85 #include <nfs/nfs_var.h> 86 87 /* Global defs. */ 88 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *, 89 struct nfssvc_sock *, 90 struct lwp *, struct mbuf **)); 91 extern int nfsrvw_procrastinate; 92 93 struct nfssvc_sock *nfs_udpsock; 94 #ifdef ISO 95 struct nfssvc_sock *nfs_cltpsock; 96 #endif 97 #ifdef INET6 98 struct nfssvc_sock *nfs_udp6sock; 99 #endif 100 int nuidhash_max = NFS_MAXUIDHASH; 101 int nfsd_waiting = 0; 102 #ifdef NFSSERVER 103 static int nfs_numnfsd = 0; 104 static struct nfsdrt nfsdrt; 105 #endif 106 107 #ifdef NFSSERVER 108 struct simplelock nfsd_slock = SIMPLELOCK_INITIALIZER; 109 struct nfssvc_sockhead nfssvc_sockhead; 110 struct nfssvc_sockhead nfssvc_sockpending; 111 struct nfsdhead nfsd_head; 112 struct nfsdidlehead nfsd_idle_head; 113 114 int nfssvc_sockhead_flag; 115 int nfsd_head_flag; 116 #endif 117 118 MALLOC_DEFINE(M_NFSUID, "NFS uid", "Nfs uid mapping structure"); 119 120 #ifdef NFS 121 struct nfs_iod nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 122 int nfs_niothreads = -1; /* == "0, and has never been set" */ 123 #endif 124 125 #ifdef NFSSERVER 126 static struct nfssvc_sock *nfsrv_sockalloc __P((void)); 127 static void nfsrv_sockfree __P((struct nfssvc_sock *)); 128 static void nfsd_rt __P((int, struct nfsrv_descript *, int)); 129 #endif 130 131 /* 132 * NFS server system calls 133 */ 134 135 136 /* 137 * Nfs server pseudo system call for the nfsd's 138 * Based on the flag value it either: 139 * - adds a socket to the selection list 140 * - remains in the kernel as an nfsd 141 * - remains in the kernel as an nfsiod 142 */ 143 int 144 sys_nfssvc(struct lwp *l, void *v, register_t *retval) 145 { 146 struct sys_nfssvc_args /* { 147 syscallarg(int) flag; 148 syscallarg(caddr_t) argp; 149 } */ *uap = v; 150 int error; 151 #ifdef NFSSERVER 152 int s; 153 struct file *fp; 154 struct mbuf *nam; 155 struct nfsd_args nfsdarg; 156 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 157 struct nfsd *nfsd; 158 struct nfssvc_sock *slp; 159 struct nfsuid *nuidp; 160 #endif 161 162 /* 163 * Must be super user 164 */ 165 error = kauth_authorize_generic(l->l_cred, KAUTH_GENERIC_ISSUSER, 166 NULL); 167 if (error) 168 return (error); 169 170 /* Initialize NFS server / client shared data. */ 171 nfs_init(); 172 173 #ifdef NFSSERVER 174 s = splsoftnet(); 175 simple_lock(&nfsd_slock); 176 while (nfssvc_sockhead_flag & SLP_INIT) { 177 nfssvc_sockhead_flag |= SLP_WANTINIT; 178 (void) ltsleep(&nfssvc_sockhead, PSOCK, "nfsd init", 0, 179 &nfsd_slock); 180 } 181 simple_unlock(&nfsd_slock); 182 splx(s); 183 #endif 184 if (SCARG(uap, flag) & NFSSVC_BIOD) { 185 #if defined(NFS) && defined(COMPAT_14) 186 error = nfssvc_iod(l); 187 #else 188 error = ENOSYS; 189 #endif 190 } else if (SCARG(uap, flag) & NFSSVC_MNTD) { 191 error = ENOSYS; 192 } else if (SCARG(uap, flag) & NFSSVC_ADDSOCK) { 193 #ifndef NFSSERVER 194 error = ENOSYS; 195 #else 196 error = copyin(SCARG(uap, argp), (caddr_t)&nfsdarg, 197 sizeof(nfsdarg)); 198 if (error) 199 return (error); 200 /* getsock() will use the descriptor for us */ 201 error = getsock(l->l_proc->p_fd, nfsdarg.sock, &fp); 202 if (error) 203 return (error); 204 /* 205 * Get the client address for connected sockets. 206 */ 207 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 208 nam = (struct mbuf *)0; 209 else { 210 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen, 211 MT_SONAME); 212 if (error) { 213 FILE_UNUSE(fp, NULL); 214 return (error); 215 } 216 } 217 error = nfssvc_addsock(fp, nam); 218 FILE_UNUSE(fp, NULL); 219 #endif /* !NFSSERVER */ 220 } else if (SCARG(uap, flag) & NFSSVC_SETEXPORTSLIST) { 221 #ifndef NFSSERVER 222 error = ENOSYS; 223 #else 224 struct export_args *args; 225 struct mountd_exports_list mel; 226 227 error = copyin(SCARG(uap, argp), &mel, sizeof(mel)); 228 if (error != 0) 229 return error; 230 231 args = (struct export_args *)malloc(mel.mel_nexports * 232 sizeof(struct export_args), M_TEMP, M_WAITOK); 233 error = copyin(mel.mel_exports, args, mel.mel_nexports * 234 sizeof(struct export_args)); 235 if (error != 0) { 236 free(args, M_TEMP); 237 return error; 238 } 239 mel.mel_exports = args; 240 241 error = mountd_set_exports_list(&mel, l); 242 243 free(args, M_TEMP); 244 #endif /* !NFSSERVER */ 245 } else { 246 #ifndef NFSSERVER 247 error = ENOSYS; 248 #else 249 error = copyin(SCARG(uap, argp), (caddr_t)nsd, sizeof (*nsd)); 250 if (error) 251 return (error); 252 if ((SCARG(uap, flag) & NFSSVC_AUTHIN) && 253 ((nfsd = nsd->nsd_nfsd)) != NULL && 254 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 255 slp = nfsd->nfsd_slp; 256 257 /* 258 * First check to see if another nfsd has already 259 * added this credential. 260 */ 261 LIST_FOREACH(nuidp, NUIDHASH(slp, nsd->nsd_cr.cr_uid), 262 nu_hash) { 263 if (kauth_cred_geteuid(nuidp->nu_cr) == 264 nsd->nsd_cr.cr_uid && 265 (!nfsd->nfsd_nd->nd_nam2 || 266 netaddr_match(NU_NETFAM(nuidp), 267 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 268 break; 269 } 270 if (nuidp) { 271 kauth_cred_hold(nuidp->nu_cr); 272 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 273 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 274 } else { 275 /* 276 * Nope, so we will. 277 */ 278 if (slp->ns_numuids < nuidhash_max) { 279 slp->ns_numuids++; 280 nuidp = (struct nfsuid *) 281 malloc(sizeof (struct nfsuid), M_NFSUID, 282 M_WAITOK); 283 } else 284 nuidp = (struct nfsuid *)0; 285 if ((slp->ns_flag & SLP_VALID) == 0) { 286 if (nuidp) 287 free((caddr_t)nuidp, M_NFSUID); 288 } else { 289 if (nuidp == (struct nfsuid *)0) { 290 nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); 291 LIST_REMOVE(nuidp, nu_hash); 292 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 293 nu_lru); 294 if (nuidp->nu_flag & NU_NAM) 295 m_freem(nuidp->nu_nam); 296 } 297 nuidp->nu_flag = 0; 298 kauth_uucred_to_cred(nuidp->nu_cr, 299 &nsd->nsd_cr); 300 nuidp->nu_timestamp = nsd->nsd_timestamp; 301 nuidp->nu_expire = time_second + nsd->nsd_ttl; 302 /* 303 * and save the session key in nu_key. 304 */ 305 memcpy(nuidp->nu_key, nsd->nsd_key, 306 sizeof(nsd->nsd_key)); 307 if (nfsd->nfsd_nd->nd_nam2) { 308 struct sockaddr_in *saddr; 309 310 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 311 struct sockaddr_in *); 312 switch (saddr->sin_family) { 313 case AF_INET: 314 nuidp->nu_flag |= NU_INETADDR; 315 nuidp->nu_inetaddr = 316 saddr->sin_addr.s_addr; 317 break; 318 case AF_ISO: 319 default: 320 nuidp->nu_flag |= NU_NAM; 321 nuidp->nu_nam = m_copym( 322 nfsd->nfsd_nd->nd_nam2, 0, 323 M_COPYALL, M_WAIT); 324 break; 325 }; 326 } 327 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 328 nu_lru); 329 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 330 nuidp, nu_hash); 331 kauth_cred_hold(nuidp->nu_cr); 332 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 333 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 334 } 335 } 336 } 337 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 338 (nfsd = nsd->nsd_nfsd)) 339 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 340 error = nfssvc_nfsd(nsd, SCARG(uap, argp), l); 341 #endif /* !NFSSERVER */ 342 } 343 if (error == EINTR || error == ERESTART) 344 error = 0; 345 return (error); 346 } 347 348 #ifdef NFSSERVER 349 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure"); 350 MALLOC_DEFINE(M_NFSSVC, "NFS srvsock", "Nfs server structure"); 351 352 static struct nfssvc_sock * 353 nfsrv_sockalloc() 354 { 355 struct nfssvc_sock *slp; 356 int s; 357 358 slp = (struct nfssvc_sock *) 359 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 360 memset(slp, 0, sizeof (struct nfssvc_sock)); 361 simple_lock_init(&slp->ns_lock); 362 TAILQ_INIT(&slp->ns_uidlruhead); 363 LIST_INIT(&slp->ns_tq); 364 SIMPLEQ_INIT(&slp->ns_sendq); 365 s = splsoftnet(); 366 simple_lock(&nfsd_slock); 367 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 368 simple_unlock(&nfsd_slock); 369 splx(s); 370 371 return slp; 372 } 373 374 static void 375 nfsrv_sockfree(struct nfssvc_sock *slp) 376 { 377 378 KASSERT(slp->ns_so == NULL); 379 KASSERT(slp->ns_fp == NULL); 380 KASSERT((slp->ns_flag & SLP_VALID) == 0); 381 free(slp, M_NFSSVC); 382 } 383 384 /* 385 * Adds a socket to the list for servicing by nfsds. 386 */ 387 int 388 nfssvc_addsock(fp, mynam) 389 struct file *fp; 390 struct mbuf *mynam; 391 { 392 struct mbuf *m; 393 int siz; 394 struct nfssvc_sock *slp; 395 struct socket *so; 396 struct nfssvc_sock *tslp; 397 int error, s; 398 399 so = (struct socket *)fp->f_data; 400 tslp = (struct nfssvc_sock *)0; 401 /* 402 * Add it to the list, as required. 403 */ 404 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 405 #ifdef INET6 406 if (so->so_proto->pr_domain->dom_family == AF_INET6) 407 tslp = nfs_udp6sock; 408 else 409 #endif 410 tslp = nfs_udpsock; 411 if (tslp->ns_flag & SLP_VALID) { 412 m_freem(mynam); 413 return (EPERM); 414 } 415 #ifdef ISO 416 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 417 tslp = nfs_cltpsock; 418 if (tslp->ns_flag & SLP_VALID) { 419 m_freem(mynam); 420 return (EPERM); 421 } 422 #endif /* ISO */ 423 } 424 if (so->so_type == SOCK_STREAM) 425 siz = NFS_MAXPACKET + sizeof (u_long); 426 else 427 siz = NFS_MAXPACKET; 428 error = soreserve(so, siz, siz); 429 if (error) { 430 m_freem(mynam); 431 return (error); 432 } 433 434 /* 435 * Set protocol specific options { for now TCP only } and 436 * reserve some space. For datagram sockets, this can get called 437 * repeatedly for the same socket, but that isn't harmful. 438 */ 439 if (so->so_type == SOCK_STREAM) { 440 m = m_get(M_WAIT, MT_SOOPTS); 441 MCLAIM(m, &nfs_mowner); 442 *mtod(m, int32_t *) = 1; 443 m->m_len = sizeof(int32_t); 444 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m); 445 } 446 if ((so->so_proto->pr_domain->dom_family == AF_INET 447 #ifdef INET6 448 || so->so_proto->pr_domain->dom_family == AF_INET6 449 #endif 450 ) && 451 so->so_proto->pr_protocol == IPPROTO_TCP) { 452 m = m_get(M_WAIT, MT_SOOPTS); 453 MCLAIM(m, &nfs_mowner); 454 *mtod(m, int32_t *) = 1; 455 m->m_len = sizeof(int32_t); 456 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m); 457 } 458 so->so_rcv.sb_flags &= ~SB_NOINTR; 459 so->so_rcv.sb_timeo = 0; 460 so->so_snd.sb_flags &= ~SB_NOINTR; 461 so->so_snd.sb_timeo = 0; 462 if (tslp) 463 slp = tslp; 464 else { 465 slp = nfsrv_sockalloc(); 466 } 467 slp->ns_so = so; 468 slp->ns_nam = mynam; 469 fp->f_count++; 470 slp->ns_fp = fp; 471 s = splsoftnet(); 472 so->so_upcallarg = (caddr_t)slp; 473 so->so_upcall = nfsrv_rcv; 474 so->so_rcv.sb_flags |= SB_UPCALL; 475 slp->ns_flag = (SLP_VALID | SLP_NEEDQ); 476 nfsrv_wakenfsd(slp); 477 splx(s); 478 return (0); 479 } 480 481 /* 482 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 483 * until it is killed by a signal. 484 */ 485 int 486 nfssvc_nfsd(nsd, argp, l) 487 struct nfsd_srvargs *nsd; 488 caddr_t argp; 489 struct lwp *l; 490 { 491 struct timeval tv; 492 struct mbuf *m; 493 struct nfssvc_sock *slp; 494 struct nfsd *nfsd = nsd->nsd_nfsd; 495 struct nfsrv_descript *nd = NULL; 496 struct mbuf *mreq; 497 u_quad_t cur_usec; 498 int error = 0, cacherep, s, siz, sotype, writes_todo; 499 struct proc *p = l->l_proc; 500 501 #ifndef nolint 502 cacherep = RC_DOIT; 503 writes_todo = 0; 504 #endif 505 s = splsoftnet(); 506 if (nfsd == (struct nfsd *)0) { 507 nsd->nsd_nfsd = nfsd = (struct nfsd *) 508 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 509 memset((caddr_t)nfsd, 0, sizeof (struct nfsd)); 510 nfsd->nfsd_procp = p; 511 simple_lock(&nfsd_slock); 512 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 513 nfs_numnfsd++; 514 simple_unlock(&nfsd_slock); 515 } 516 PHOLD(l); 517 /* 518 * Loop getting rpc requests until SIGKILL. 519 */ 520 for (;;) { 521 if (nfsd->nfsd_slp == NULL) { 522 simple_lock(&nfsd_slock); 523 while (nfsd->nfsd_slp == NULL && 524 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 525 SLIST_INSERT_HEAD(&nfsd_idle_head, nfsd, 526 nfsd_idle); 527 nfsd_waiting++; 528 error = ltsleep(nfsd, PSOCK | PCATCH, "nfsd", 529 0, &nfsd_slock); 530 nfsd_waiting--; 531 if (error) { 532 slp = nfsd->nfsd_slp; 533 nfsd->nfsd_slp = NULL; 534 if (!slp) 535 SLIST_REMOVE(&nfsd_idle_head, 536 nfsd, nfsd, nfsd_idle); 537 simple_unlock(&nfsd_slock); 538 if (slp) { 539 nfsrv_wakenfsd(slp); 540 nfsrv_slpderef(slp); 541 } 542 goto done; 543 } 544 } 545 if (nfsd->nfsd_slp == NULL && 546 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 547 slp = TAILQ_FIRST(&nfssvc_sockpending); 548 if (slp) { 549 KASSERT((slp->ns_flag & 550 (SLP_VALID | SLP_DOREC)) 551 == (SLP_VALID | SLP_DOREC)); 552 TAILQ_REMOVE(&nfssvc_sockpending, slp, 553 ns_pending); 554 slp->ns_flag &= ~SLP_DOREC; 555 slp->ns_sref++; 556 nfsd->nfsd_slp = slp; 557 } else 558 nfsd_head_flag &= ~NFSD_CHECKSLP; 559 } 560 simple_unlock(&nfsd_slock); 561 if ((slp = nfsd->nfsd_slp) == NULL) 562 continue; 563 if (slp->ns_flag & SLP_VALID) { 564 if (slp->ns_flag & SLP_DISCONN) 565 nfsrv_zapsock(slp); 566 else if ((slp->ns_flag & SLP_NEEDQ) != 0) { 567 nfsrv_rcv(slp->ns_so, (void *)slp, 568 M_WAIT); 569 } 570 error = nfsrv_dorec(slp, nfsd, &nd); 571 getmicrotime(&tv); 572 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 573 (u_quad_t)tv.tv_usec; 574 if (error && LIST_FIRST(&slp->ns_tq) && 575 LIST_FIRST(&slp->ns_tq)->nd_time <= 576 cur_usec) { 577 error = 0; 578 cacherep = RC_DOIT; 579 writes_todo = 1; 580 } else 581 writes_todo = 0; 582 if (error == 0 && slp->ns_rec != NULL) { 583 nfsrv_wakenfsd(slp); 584 } 585 } 586 } else { 587 error = 0; 588 slp = nfsd->nfsd_slp; 589 } 590 if (error || (slp->ns_flag & SLP_VALID) == 0) { 591 if (nd) { 592 nfsdreq_free(nd); 593 nd = NULL; 594 } 595 nfsd->nfsd_slp = NULL; 596 nfsrv_slpderef(slp); 597 continue; 598 } 599 splx(s); 600 sotype = slp->ns_so->so_type; 601 if (nd) { 602 getmicrotime(&nd->nd_starttime); 603 if (nd->nd_nam2) 604 nd->nd_nam = nd->nd_nam2; 605 else 606 nd->nd_nam = slp->ns_nam; 607 608 /* 609 * Check to see if authorization is needed. 610 */ 611 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 612 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 613 nsd->nsd_haddr = mtod(nd->nd_nam, 614 struct sockaddr_in *)->sin_addr.s_addr; 615 nsd->nsd_authlen = nfsd->nfsd_authlen; 616 nsd->nsd_verflen = nfsd->nfsd_verflen; 617 if (!copyout(nfsd->nfsd_authstr, 618 nsd->nsd_authstr, nfsd->nfsd_authlen) && 619 !copyout(nfsd->nfsd_verfstr, 620 nsd->nsd_verfstr, nfsd->nfsd_verflen) && 621 !copyout(nsd, argp, sizeof (*nsd))) { 622 PRELE(l); 623 return (ENEEDAUTH); 624 } 625 cacherep = RC_DROPIT; 626 } else 627 cacherep = nfsrv_getcache(nd, slp, &mreq); 628 629 if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 630 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 631 nd->nd_procnum = NFSPROC_NOOP; 632 nd->nd_repstat = 633 (NFSERR_AUTHERR | AUTH_TOOWEAK); 634 cacherep = RC_DOIT; 635 } 636 } 637 638 /* 639 * Loop to get all the write rpc relies that have been 640 * gathered together. 641 */ 642 do { 643 #ifdef DIAGNOSTIC 644 int lockcount; 645 #endif 646 switch (cacherep) { 647 case RC_DOIT: 648 #ifdef DIAGNOSTIC 649 /* 650 * NFS server procs should neither release 651 * locks already held, nor leave things 652 * locked. Catch this sooner, rather than 653 * later (when we try to relock something we 654 * already have locked). Careful inspection 655 * of the failing routine usually turns up the 656 * lock leak.. once we know what it is.. 657 */ 658 lockcount = l->l_locks; 659 #endif 660 mreq = NULL; 661 netexport_rdlock(); 662 if (writes_todo || nd == NULL || 663 (!(nd->nd_flag & ND_NFSV3) && 664 nd->nd_procnum == NFSPROC_WRITE && 665 nfsrvw_procrastinate > 0)) 666 error = nfsrv_writegather(&nd, slp, 667 l, &mreq); 668 else 669 error = 670 (*(nfsrv3_procs[nd->nd_procnum])) 671 (nd, slp, l, &mreq); 672 netexport_rdunlock(); 673 #ifdef DIAGNOSTIC 674 if (l->l_locks != lockcount) { 675 /* 676 * If you see this panic, audit 677 * nfsrv3_procs[nd->nd_procnum] for 678 * vnode locking errors (usually, it's 679 * due to forgetting to vput() 680 * something). 681 */ 682 #ifdef DEBUG 683 extern void printlockedvnodes(void); 684 printlockedvnodes(); 685 #endif 686 printf("nfsd: locking botch in op %d" 687 " (before %d, after %d)\n", 688 nd ? nd->nd_procnum : -1, 689 lockcount, l->l_locks); 690 } 691 #endif 692 if (mreq == NULL) { 693 if (nd != NULL) { 694 if (nd->nd_nam2) 695 m_free(nd->nd_nam2); 696 if (nd->nd_mrep) 697 m_freem(nd->nd_mrep); 698 } 699 break; 700 } 701 if (error) { 702 nfsstats.srv_errs++; 703 nfsrv_updatecache(nd, FALSE, mreq); 704 if (nd->nd_nam2) 705 m_freem(nd->nd_nam2); 706 break; 707 } 708 nfsstats.srvrpccnt[nd->nd_procnum]++; 709 nfsrv_updatecache(nd, TRUE, mreq); 710 nd->nd_mrep = (struct mbuf *)0; 711 case RC_REPLY: 712 m = mreq; 713 siz = 0; 714 while (m) { 715 siz += m->m_len; 716 m = m->m_next; 717 } 718 if (siz <= 0 || siz > NFS_MAXPACKET) { 719 printf("mbuf siz=%d\n",siz); 720 panic("Bad nfs svc reply"); 721 } 722 m = mreq; 723 m->m_pkthdr.len = siz; 724 m->m_pkthdr.rcvif = (struct ifnet *)0; 725 /* 726 * For stream protocols, prepend a Sun RPC 727 * Record Mark. 728 */ 729 if (sotype == SOCK_STREAM) { 730 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 731 *mtod(m, u_int32_t *) = 732 htonl(0x80000000 | siz); 733 } 734 nd->nd_mreq = m; 735 if (nfsrtton) { 736 nfsd_rt(slp->ns_so->so_type, nd, 737 cacherep); 738 } 739 s = splsoftnet(); 740 error = nfsdsock_sendreply(slp, nd); 741 nd = NULL; 742 if (error == EPIPE) 743 nfsrv_zapsock(slp); 744 if (error == EINTR || error == ERESTART) { 745 nfsrv_slpderef(slp); 746 goto done; 747 } 748 splx(s); 749 break; 750 case RC_DROPIT: 751 if (nfsrtton) 752 nfsd_rt(sotype, nd, cacherep); 753 m_freem(nd->nd_mrep); 754 m_freem(nd->nd_nam2); 755 break; 756 } 757 if (nd) { 758 nfsdreq_free(nd); 759 nd = NULL; 760 } 761 762 /* 763 * Check to see if there are outstanding writes that 764 * need to be serviced. 765 */ 766 getmicrotime(&tv); 767 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 768 (u_quad_t)tv.tv_usec; 769 s = splsoftclock(); 770 if (LIST_FIRST(&slp->ns_tq) && 771 LIST_FIRST(&slp->ns_tq)->nd_time <= cur_usec) { 772 cacherep = RC_DOIT; 773 writes_todo = 1; 774 } else 775 writes_todo = 0; 776 splx(s); 777 } while (writes_todo); 778 s = splsoftnet(); 779 if (nfsrv_dorec(slp, nfsd, &nd)) { 780 nfsd->nfsd_slp = NULL; 781 nfsrv_slpderef(slp); 782 } 783 } 784 done: 785 PRELE(l); 786 simple_lock(&nfsd_slock); 787 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 788 simple_unlock(&nfsd_slock); 789 splx(s); 790 free((caddr_t)nfsd, M_NFSD); 791 nsd->nsd_nfsd = (struct nfsd *)0; 792 if (--nfs_numnfsd == 0) 793 nfsrv_init(TRUE); /* Reinitialize everything */ 794 return (error); 795 } 796 797 /* 798 * Shut down a socket associated with an nfssvc_sock structure. 799 * Should be called with the send lock set, if required. 800 * The trick here is to increment the sref at the start, so that the nfsds 801 * will stop using it and clear ns_flag at the end so that it will not be 802 * reassigned during cleanup. 803 * 804 * called at splsoftnet. 805 */ 806 void 807 nfsrv_zapsock(slp) 808 struct nfssvc_sock *slp; 809 { 810 struct nfsuid *nuidp, *nnuidp; 811 struct nfsrv_descript *nwp, *nnwp; 812 struct socket *so; 813 struct mbuf *m; 814 int s; 815 816 if (nfsdsock_drain(slp)) { 817 return; 818 } 819 simple_lock(&nfsd_slock); 820 if (slp->ns_flag & SLP_DOREC) { 821 TAILQ_REMOVE(&nfssvc_sockpending, slp, ns_pending); 822 } 823 simple_unlock(&nfsd_slock); 824 825 so = slp->ns_so; 826 KASSERT(so != NULL); 827 so->so_upcall = NULL; 828 so->so_upcallarg = NULL; 829 so->so_rcv.sb_flags &= ~SB_UPCALL; 830 soshutdown(so, SHUT_RDWR); 831 832 if (slp->ns_nam) 833 m_free(slp->ns_nam); 834 m_freem(slp->ns_raw); 835 m = slp->ns_rec; 836 while (m != NULL) { 837 struct mbuf *n; 838 839 n = m->m_nextpkt; 840 m_freem(m); 841 m = n; 842 } 843 for (nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); nuidp != 0; 844 nuidp = nnuidp) { 845 nnuidp = TAILQ_NEXT(nuidp, nu_lru); 846 LIST_REMOVE(nuidp, nu_hash); 847 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 848 if (nuidp->nu_flag & NU_NAM) 849 m_freem(nuidp->nu_nam); 850 free((caddr_t)nuidp, M_NFSUID); 851 } 852 s = splsoftclock(); 853 for (nwp = LIST_FIRST(&slp->ns_tq); nwp; nwp = nnwp) { 854 nnwp = LIST_NEXT(nwp, nd_tq); 855 LIST_REMOVE(nwp, nd_tq); 856 nfsdreq_free(nwp); 857 } 858 splx(s); 859 } 860 861 /* 862 * Derefence a server socket structure. If it has no more references and 863 * is no longer valid, you can throw it away. 864 */ 865 void 866 nfsrv_slpderef(slp) 867 struct nfssvc_sock *slp; 868 { 869 LOCK_ASSERT(!simple_lock_held(&nfsd_slock)); 870 871 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) { 872 struct file *fp; 873 int s = splsoftnet(); 874 simple_lock(&nfsd_slock); 875 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 876 simple_unlock(&nfsd_slock); 877 splx(s); 878 879 fp = slp->ns_fp; 880 if (fp != NULL) { 881 slp->ns_fp = NULL; 882 KASSERT(fp != NULL); 883 KASSERT(fp->f_data == slp->ns_so); 884 simple_lock(&fp->f_slock); 885 FILE_USE(fp); 886 closef(fp, (struct lwp *)0); 887 slp->ns_so = NULL; 888 } 889 890 nfsrv_sockfree(slp); 891 } 892 } 893 894 /* 895 * Initialize the data structures for the server. 896 * Handshake with any new nfsds starting up to avoid any chance of 897 * corruption. 898 */ 899 void 900 nfsrv_init(terminating) 901 int terminating; 902 { 903 struct nfssvc_sock *slp; 904 int s; 905 906 s = splsoftnet(); 907 simple_lock(&nfsd_slock); 908 if (nfssvc_sockhead_flag & SLP_INIT) 909 panic("nfsd init"); 910 nfssvc_sockhead_flag |= SLP_INIT; 911 912 if (terminating) { 913 while ((slp = TAILQ_FIRST(&nfssvc_sockhead)) != NULL) { 914 simple_unlock(&nfsd_slock); 915 KASSERT(slp->ns_sref == 0); 916 slp->ns_sref++; 917 nfsrv_zapsock(slp); 918 nfsrv_slpderef(slp); 919 simple_lock(&nfsd_slock); 920 } 921 simple_unlock(&nfsd_slock); 922 splx(s); 923 nfsrv_cleancache(); /* And clear out server cache */ 924 } else { 925 simple_unlock(&nfsd_slock); 926 splx(s); 927 nfs_pub.np_valid = 0; 928 } 929 930 TAILQ_INIT(&nfssvc_sockhead); 931 TAILQ_INIT(&nfssvc_sockpending); 932 nfssvc_sockhead_flag &= ~SLP_INIT; 933 934 TAILQ_INIT(&nfsd_head); 935 SLIST_INIT(&nfsd_idle_head); 936 nfsd_head_flag &= ~NFSD_CHECKSLP; 937 938 nfs_udpsock = nfsrv_sockalloc(); 939 940 #ifdef INET6 941 nfs_udp6sock = nfsrv_sockalloc(); 942 #endif 943 944 #ifdef ISO 945 nfs_cltpsock = nfsrv_sockalloc(); 946 #endif 947 948 simple_lock(&nfsd_slock); 949 if (nfssvc_sockhead_flag & SLP_WANTINIT) { 950 nfssvc_sockhead_flag &= ~SLP_WANTINIT; 951 wakeup(&nfssvc_sockhead); 952 } 953 simple_unlock(&nfsd_slock); 954 splx(s); 955 } 956 957 /* 958 * Add entries to the server monitor log. 959 */ 960 static void 961 nfsd_rt(sotype, nd, cacherep) 962 int sotype; 963 struct nfsrv_descript *nd; 964 int cacherep; 965 { 966 struct timeval tv; 967 struct drt *rt; 968 969 rt = &nfsdrt.drt[nfsdrt.pos]; 970 if (cacherep == RC_DOIT) 971 rt->flag = 0; 972 else if (cacherep == RC_REPLY) 973 rt->flag = DRT_CACHEREPLY; 974 else 975 rt->flag = DRT_CACHEDROP; 976 if (sotype == SOCK_STREAM) 977 rt->flag |= DRT_TCP; 978 if (nd->nd_flag & ND_NFSV3) 979 rt->flag |= DRT_NFSV3; 980 rt->proc = nd->nd_procnum; 981 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 982 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 983 else 984 rt->ipadr = INADDR_ANY; 985 getmicrotime(&tv); 986 rt->resptime = ((tv.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 987 (tv.tv_usec - nd->nd_starttime.tv_usec); 988 rt->tstamp = tv; 989 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 990 } 991 #endif /* NFSSERVER */ 992 993 #ifdef NFS 994 995 int nfs_defect = 0; 996 /* 997 * Asynchronous I/O threads for client nfs. 998 * They do read-ahead and write-behind operations on the block I/O cache. 999 * Never returns unless it fails or gets killed. 1000 */ 1001 1002 int 1003 nfssvc_iod(l) 1004 struct lwp *l; 1005 { 1006 struct buf *bp; 1007 int i; 1008 struct nfs_iod *myiod; 1009 struct nfsmount *nmp; 1010 int error = 0; 1011 struct proc *p = l->l_proc; 1012 1013 /* 1014 * Assign my position or return error if too many already running 1015 */ 1016 myiod = NULL; 1017 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1018 if (nfs_asyncdaemon[i].nid_proc == NULL) { 1019 myiod = &nfs_asyncdaemon[i]; 1020 break; 1021 } 1022 if (myiod == NULL) 1023 return (EBUSY); 1024 myiod->nid_proc = p; 1025 nfs_numasync++; 1026 PHOLD(l); 1027 /* 1028 * Just loop around doing our stuff until SIGKILL 1029 */ 1030 for (;;) { 1031 while (/*CONSTCOND*/ TRUE) { 1032 simple_lock(&myiod->nid_slock); 1033 nmp = myiod->nid_mount; 1034 if (nmp) { 1035 simple_lock(&nmp->nm_slock); 1036 if (!TAILQ_EMPTY(&nmp->nm_bufq)) { 1037 simple_unlock(&myiod->nid_slock); 1038 break; 1039 } 1040 nmp->nm_bufqiods--; 1041 simple_unlock(&nmp->nm_slock); 1042 } 1043 myiod->nid_want = p; 1044 myiod->nid_mount = NULL; 1045 error = ltsleep(&myiod->nid_want, 1046 PWAIT | PCATCH | PNORELOCK, "nfsidl", 0, 1047 &myiod->nid_slock); 1048 if (error) 1049 goto quit; 1050 } 1051 1052 while ((bp = TAILQ_FIRST(&nmp->nm_bufq)) != NULL) { 1053 /* Take one off the front of the list */ 1054 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 1055 nmp->nm_bufqlen--; 1056 if (nmp->nm_bufqwant && 1057 nmp->nm_bufqlen < 2 * nfs_numasync) { 1058 nmp->nm_bufqwant = FALSE; 1059 wakeup(&nmp->nm_bufq); 1060 } 1061 simple_unlock(&nmp->nm_slock); 1062 (void)nfs_doio(bp); 1063 simple_lock(&nmp->nm_slock); 1064 /* 1065 * If there are more than one iod on this mount, 1066 * then defect so that the iods can be shared out 1067 * fairly between the mounts 1068 */ 1069 if (nfs_defect && nmp->nm_bufqiods > 1) { 1070 myiod->nid_mount = NULL; 1071 nmp->nm_bufqiods--; 1072 break; 1073 } 1074 } 1075 simple_unlock(&nmp->nm_slock); 1076 } 1077 quit: 1078 PRELE(l); 1079 if (nmp) 1080 nmp->nm_bufqiods--; 1081 myiod->nid_want = NULL; 1082 myiod->nid_mount = NULL; 1083 myiod->nid_proc = NULL; 1084 nfs_numasync--; 1085 1086 return error; 1087 } 1088 1089 void 1090 nfs_iodinit() 1091 { 1092 int i; 1093 1094 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1095 simple_lock_init(&nfs_asyncdaemon[i].nid_slock); 1096 } 1097 1098 void 1099 start_nfsio(void *arg) 1100 { 1101 nfssvc_iod(curlwp); 1102 1103 kthread_exit(0); 1104 } 1105 1106 void 1107 nfs_getset_niothreads(set) 1108 int set; 1109 { 1110 int i, have, start; 1111 1112 for (have = 0, i = 0; i < NFS_MAXASYNCDAEMON; i++) 1113 if (nfs_asyncdaemon[i].nid_proc != NULL) 1114 have++; 1115 1116 if (set) { 1117 /* clamp to sane range */ 1118 nfs_niothreads = max(0, min(nfs_niothreads, NFS_MAXASYNCDAEMON)); 1119 1120 start = nfs_niothreads - have; 1121 1122 while (start > 0) { 1123 kthread_create1(start_nfsio, NULL, NULL, "nfsio"); 1124 start--; 1125 } 1126 1127 for (i = 0; (start < 0) && (i < NFS_MAXASYNCDAEMON); i++) 1128 if (nfs_asyncdaemon[i].nid_proc != NULL) { 1129 psignal(nfs_asyncdaemon[i].nid_proc, SIGKILL); 1130 start++; 1131 } 1132 } else { 1133 if (nfs_niothreads >= 0) 1134 nfs_niothreads = have; 1135 } 1136 } 1137 1138 /* 1139 * Get an authorization string for the uid by having the mount_nfs sitting 1140 * on this mount point porpous out of the kernel and do it. 1141 */ 1142 int 1143 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1144 struct nfsmount *nmp; 1145 struct nfsreq *rep; 1146 kauth_cred_t cred; 1147 char **auth_str; 1148 int *auth_len; 1149 char *verf_str; 1150 int *verf_len; 1151 NFSKERBKEY_T key; /* return session key */ 1152 { 1153 int error = 0; 1154 1155 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1156 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1157 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK, 1158 "nfsauth1", 2 * hz); 1159 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1160 if (error) { 1161 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1162 return (error); 1163 } 1164 } 1165 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1166 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1167 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1168 nmp->nm_verfstr = verf_str; 1169 nmp->nm_verflen = *verf_len; 1170 nmp->nm_authuid = kauth_cred_geteuid(cred); 1171 wakeup((caddr_t)&nmp->nm_authstr); 1172 1173 /* 1174 * And wait for mount_nfs to do its stuff. 1175 */ 1176 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1177 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK, 1178 "nfsauth2", 2 * hz); 1179 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1180 } 1181 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1182 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1183 error = EAUTH; 1184 } 1185 if (error) 1186 free((caddr_t)*auth_str, M_TEMP); 1187 else { 1188 *auth_len = nmp->nm_authlen; 1189 *verf_len = nmp->nm_verflen; 1190 memcpy(key, nmp->nm_key, sizeof (NFSKERBKEY_T)); 1191 } 1192 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1193 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1194 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1195 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1196 wakeup((caddr_t)&nmp->nm_authtype); 1197 } 1198 return (error); 1199 } 1200 1201 /* 1202 * Get a nickname authenticator and verifier. 1203 */ 1204 int 1205 nfs_getnickauth(struct nfsmount *nmp, kauth_cred_t cred, char **auth_str, 1206 int *auth_len, char *verf_str, int verf_len) 1207 { 1208 struct timeval ktvin, ktvout, tv; 1209 struct nfsuid *nuidp; 1210 u_int32_t *nickp, *verfp; 1211 1212 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1213 1214 #ifdef DIAGNOSTIC 1215 if (verf_len < (4 * NFSX_UNSIGNED)) 1216 panic("nfs_getnickauth verf too small"); 1217 #endif 1218 LIST_FOREACH(nuidp, NMUIDHASH(nmp, kauth_cred_geteuid(cred)), nu_hash) { 1219 if (kauth_cred_geteuid(nuidp->nu_cr) == kauth_cred_geteuid(cred)) 1220 break; 1221 } 1222 if (!nuidp || nuidp->nu_expire < time_second) 1223 return (EACCES); 1224 1225 /* 1226 * Move to the end of the lru list (end of lru == most recently used). 1227 */ 1228 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1229 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1230 1231 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1232 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1233 *nickp = txdr_unsigned(nuidp->nu_nickname); 1234 *auth_str = (char *)nickp; 1235 *auth_len = 2 * NFSX_UNSIGNED; 1236 1237 /* 1238 * Now we must encrypt the verifier and package it up. 1239 */ 1240 verfp = (u_int32_t *)verf_str; 1241 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1242 getmicrotime(&tv); 1243 if (tv.tv_sec > nuidp->nu_timestamp.tv_sec || 1244 (tv.tv_sec == nuidp->nu_timestamp.tv_sec && 1245 tv.tv_usec > nuidp->nu_timestamp.tv_usec)) 1246 nuidp->nu_timestamp = tv; 1247 else 1248 nuidp->nu_timestamp.tv_usec++; 1249 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1250 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1251 1252 /* 1253 * Now encrypt the timestamp verifier in ecb mode using the session 1254 * key. 1255 */ 1256 #ifdef NFSKERB 1257 XXX 1258 #endif 1259 1260 *verfp++ = ktvout.tv_sec; 1261 *verfp++ = ktvout.tv_usec; 1262 *verfp = 0; 1263 return (0); 1264 } 1265 1266 /* 1267 * Save the current nickname in a hash list entry on the mount point. 1268 */ 1269 int 1270 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1271 struct nfsmount *nmp; 1272 kauth_cred_t cred; 1273 int len; 1274 NFSKERBKEY_T key; 1275 struct mbuf **mdp; 1276 char **dposp; 1277 struct mbuf *mrep; 1278 { 1279 struct nfsuid *nuidp; 1280 u_int32_t *tl; 1281 int32_t t1; 1282 struct mbuf *md = *mdp; 1283 struct timeval ktvin, ktvout; 1284 u_int32_t nick; 1285 char *dpos = *dposp, *cp2; 1286 int deltasec, error = 0; 1287 1288 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1289 1290 if (len == (3 * NFSX_UNSIGNED)) { 1291 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1292 ktvin.tv_sec = *tl++; 1293 ktvin.tv_usec = *tl++; 1294 nick = fxdr_unsigned(u_int32_t, *tl); 1295 1296 /* 1297 * Decrypt the timestamp in ecb mode. 1298 */ 1299 #ifdef NFSKERB 1300 XXX 1301 #endif 1302 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1303 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1304 deltasec = time_second - ktvout.tv_sec; 1305 if (deltasec < 0) 1306 deltasec = -deltasec; 1307 /* 1308 * If ok, add it to the hash list for the mount point. 1309 */ 1310 if (deltasec <= NFS_KERBCLOCKSKEW) { 1311 if (nmp->nm_numuids < nuidhash_max) { 1312 nmp->nm_numuids++; 1313 nuidp = (struct nfsuid *) 1314 malloc(sizeof (struct nfsuid), M_NFSUID, 1315 M_WAITOK); 1316 } else { 1317 nuidp = TAILQ_FIRST(&nmp->nm_uidlruhead); 1318 LIST_REMOVE(nuidp, nu_hash); 1319 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1320 nu_lru); 1321 } 1322 nuidp->nu_flag = 0; 1323 kauth_cred_seteuid(nuidp->nu_cr, kauth_cred_geteuid(cred)); 1324 nuidp->nu_expire = time_second + NFS_KERBTTL; 1325 nuidp->nu_timestamp = ktvout; 1326 nuidp->nu_nickname = nick; 1327 memcpy(nuidp->nu_key, key, sizeof (NFSKERBKEY_T)); 1328 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1329 nu_lru); 1330 LIST_INSERT_HEAD(NMUIDHASH(nmp, kauth_cred_geteuid(cred)), 1331 nuidp, nu_hash); 1332 } 1333 } else 1334 nfsm_adv(nfsm_rndup(len)); 1335 nfsmout: 1336 *mdp = md; 1337 *dposp = dpos; 1338 return (error); 1339 } 1340 #endif /* NFS */ 1341
Indexes created Mon Oct 20 20:10:13 GMT 2025