nfs_syscalls.c revision 1.130.6.1
1 /* $NetBSD: nfs_syscalls.c,v 1.130.6.1 2008/04/03 12:43:10 mjf 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 1.130.6.1 2008/04/03 12:43:10 mjf 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/kmem.h> 58 #include <sys/buf.h> 59 #include <sys/mbuf.h> 60 #include <sys/socket.h> 61 #include <sys/socketvar.h> 62 #include <sys/signalvar.h> 63 #include <sys/domain.h> 64 #include <sys/protosw.h> 65 #include <sys/namei.h> 66 #include <sys/syslog.h> 67 #include <sys/filedesc.h> 68 #include <sys/kthread.h> 69 #include <sys/kauth.h> 70 #include <sys/syscallargs.h> 71 72 #include <netinet/in.h> 73 #include <netinet/tcp.h> 74 #ifdef ISO 75 #include <netiso/iso.h> 76 #endif 77 #include <nfs/xdr_subs.h> 78 #include <nfs/rpcv2.h> 79 #include <nfs/nfsproto.h> 80 #include <nfs/nfs.h> 81 #include <nfs/nfsm_subs.h> 82 #include <nfs/nfsrvcache.h> 83 #include <nfs/nfsmount.h> 84 #include <nfs/nfsnode.h> 85 #include <nfs/nfsrtt.h> 86 #include <nfs/nfs_var.h> 87 88 /* Global defs. */ 89 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *, 90 struct nfssvc_sock *, 91 struct lwp *, struct mbuf **)); 92 extern int nfsrvw_procrastinate; 93 94 struct nfssvc_sock *nfs_udpsock; 95 #ifdef ISO 96 struct nfssvc_sock *nfs_cltpsock; 97 #endif 98 #ifdef INET6 99 struct nfssvc_sock *nfs_udp6sock; 100 #endif 101 int nuidhash_max = NFS_MAXUIDHASH; 102 #ifdef NFSSERVER 103 static int nfs_numnfsd = 0; 104 static struct nfsdrt nfsdrt; 105 #endif 106 107 #ifdef NFSSERVER 108 kmutex_t nfsd_lock; 109 struct nfssvc_sockhead nfssvc_sockhead; 110 kcondvar_t nfsd_initcv; 111 struct nfssvc_sockhead nfssvc_sockpending; 112 struct nfsdhead nfsd_head; 113 struct nfsdidlehead nfsd_idle_head; 114 115 int nfssvc_sockhead_flag; 116 int nfsd_head_flag; 117 #endif 118 119 #ifdef NFS 120 /* 121 * locking order: 122 * nfs_iodlist_lock -> nid_lock -> nm_lock 123 */ 124 kmutex_t nfs_iodlist_lock; 125 struct nfs_iodlist nfs_iodlist_idle; 126 struct nfs_iodlist nfs_iodlist_all; 127 int nfs_niothreads = -1; /* == "0, and has never been set" */ 128 #endif 129 130 #ifdef NFSSERVER 131 static struct nfssvc_sock *nfsrv_sockalloc __P((void)); 132 static void nfsrv_sockfree __P((struct nfssvc_sock *)); 133 static void nfsd_rt __P((int, struct nfsrv_descript *, int)); 134 #endif 135 136 /* 137 * NFS server system calls 138 */ 139 140 141 /* 142 * Nfs server pseudo system call for the nfsd's 143 * Based on the flag value it either: 144 * - adds a socket to the selection list 145 * - remains in the kernel as an nfsd 146 * - remains in the kernel as an nfsiod 147 */ 148 int 149 sys_nfssvc(struct lwp *l, const struct sys_nfssvc_args *uap, register_t *retval) 150 { 151 /* { 152 syscallarg(int) flag; 153 syscallarg(void *) argp; 154 } */ 155 int error; 156 #ifdef NFSSERVER 157 file_t *fp; 158 struct mbuf *nam; 159 struct nfsd_args nfsdarg; 160 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 161 struct nfsd *nfsd; 162 struct nfssvc_sock *slp; 163 struct nfsuid *nuidp; 164 #endif 165 166 /* 167 * Must be super user 168 */ 169 error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_NFS, 170 KAUTH_REQ_NETWORK_NFS_SVC, NULL, NULL, NULL); 171 if (error) 172 return (error); 173 174 /* Initialize NFS server / client shared data. */ 175 nfs_init(); 176 177 #ifdef NFSSERVER 178 mutex_enter(&nfsd_lock); 179 while (nfssvc_sockhead_flag & SLP_INIT) { 180 cv_wait(&nfsd_initcv, &nfsd_lock); 181 } 182 mutex_exit(&nfsd_lock); 183 #endif 184 if (SCARG(uap, flag) & NFSSVC_BIOD) { 185 #if defined(NFS) && defined(COMPAT_14) 186 error = kpause("nfsbiod", true, 0, NULL); /* dummy impl */ 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), (void *)&nfsdarg, 197 sizeof(nfsdarg)); 198 if (error) 199 return (error); 200 /* getsock() will use the descriptor for us */ 201 error = getsock(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 fd_putfile(nfsdarg.sock); 214 return (error); 215 } 216 } 217 error = nfssvc_addsock(fp, nam); 218 fd_putfile(nfsdarg.sock); 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), (void *)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_flags & 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 = kmem_alloc(sizeof(*nuidp), KM_SLEEP); 281 } else 282 nuidp = (struct nfsuid *)0; 283 if ((slp->ns_flags & SLP_VALID) == 0) { 284 if (nuidp) 285 kmem_free(nuidp, sizeof(*nuidp)); 286 } else { 287 if (nuidp == (struct nfsuid *)0) { 288 nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); 289 LIST_REMOVE(nuidp, nu_hash); 290 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 291 nu_lru); 292 if (nuidp->nu_flag & NU_NAM) 293 m_freem(nuidp->nu_nam); 294 } 295 nuidp->nu_flag = 0; 296 kauth_uucred_to_cred(nuidp->nu_cr, 297 &nsd->nsd_cr); 298 nuidp->nu_timestamp = nsd->nsd_timestamp; 299 nuidp->nu_expire = time_second + nsd->nsd_ttl; 300 /* 301 * and save the session key in nu_key. 302 */ 303 memcpy(nuidp->nu_key, nsd->nsd_key, 304 sizeof(nsd->nsd_key)); 305 if (nfsd->nfsd_nd->nd_nam2) { 306 struct sockaddr_in *saddr; 307 308 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 309 struct sockaddr_in *); 310 switch (saddr->sin_family) { 311 case AF_INET: 312 nuidp->nu_flag |= NU_INETADDR; 313 nuidp->nu_inetaddr = 314 saddr->sin_addr.s_addr; 315 break; 316 case AF_ISO: 317 default: 318 nuidp->nu_flag |= NU_NAM; 319 nuidp->nu_nam = m_copym( 320 nfsd->nfsd_nd->nd_nam2, 0, 321 M_COPYALL, M_WAIT); 322 break; 323 }; 324 } 325 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 326 nu_lru); 327 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 328 nuidp, nu_hash); 329 kauth_cred_hold(nuidp->nu_cr); 330 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 331 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 332 } 333 } 334 } 335 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 336 (nfsd = nsd->nsd_nfsd)) 337 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 338 error = nfssvc_nfsd(nsd, SCARG(uap, argp), l); 339 #endif /* !NFSSERVER */ 340 } 341 if (error == EINTR || error == ERESTART) 342 error = 0; 343 return (error); 344 } 345 346 #ifdef NFSSERVER 347 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure"); 348 349 static struct nfssvc_sock * 350 nfsrv_sockalloc() 351 { 352 struct nfssvc_sock *slp; 353 354 slp = kmem_alloc(sizeof(*slp), KM_SLEEP); 355 memset(slp, 0, sizeof (struct nfssvc_sock)); 356 /* XXX could be IPL_SOFTNET */ 357 mutex_init(&slp->ns_lock, MUTEX_DRIVER, IPL_VM); 358 mutex_init(&slp->ns_alock, MUTEX_DRIVER, IPL_VM); 359 cv_init(&slp->ns_cv, "nfsdsock"); 360 TAILQ_INIT(&slp->ns_uidlruhead); 361 LIST_INIT(&slp->ns_tq); 362 SIMPLEQ_INIT(&slp->ns_sendq); 363 mutex_enter(&nfsd_lock); 364 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 365 mutex_exit(&nfsd_lock); 366 367 return slp; 368 } 369 370 static void 371 nfsrv_sockfree(struct nfssvc_sock *slp) 372 { 373 374 KASSERT(slp->ns_so == NULL); 375 KASSERT(slp->ns_fp == NULL); 376 KASSERT((slp->ns_flags & SLP_VALID) == 0); 377 mutex_destroy(&slp->ns_lock); 378 mutex_destroy(&slp->ns_alock); 379 cv_destroy(&slp->ns_cv); 380 kmem_free(slp, sizeof(*slp)); 381 } 382 383 /* 384 * Adds a socket to the list for servicing by nfsds. 385 */ 386 int 387 nfssvc_addsock(fp, mynam) 388 file_t *fp; 389 struct mbuf *mynam; 390 { 391 struct mbuf *m; 392 int siz; 393 struct nfssvc_sock *slp; 394 struct socket *so; 395 struct nfssvc_sock *tslp; 396 int error, s; 397 398 so = (struct socket *)fp->f_data; 399 tslp = (struct nfssvc_sock *)0; 400 /* 401 * Add it to the list, as required. 402 */ 403 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 404 #ifdef INET6 405 if (so->so_proto->pr_domain->dom_family == AF_INET6) 406 tslp = nfs_udp6sock; 407 else 408 #endif 409 tslp = nfs_udpsock; 410 if (tslp->ns_flags & SLP_VALID) { 411 m_freem(mynam); 412 return (EPERM); 413 } 414 #ifdef ISO 415 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 416 tslp = nfs_cltpsock; 417 if (tslp->ns_flags & SLP_VALID) { 418 m_freem(mynam); 419 return (EPERM); 420 } 421 #endif /* ISO */ 422 } 423 if (so->so_type == SOCK_STREAM) 424 siz = NFS_MAXPACKET + sizeof (u_long); 425 else 426 siz = NFS_MAXPACKET; 427 error = soreserve(so, siz, siz); 428 if (error) { 429 m_freem(mynam); 430 return (error); 431 } 432 433 /* 434 * Set protocol specific options { for now TCP only } and 435 * reserve some space. For datagram sockets, this can get called 436 * repeatedly for the same socket, but that isn't harmful. 437 */ 438 if (so->so_type == SOCK_STREAM) { 439 m = m_get(M_WAIT, MT_SOOPTS); 440 MCLAIM(m, &nfs_mowner); 441 *mtod(m, int32_t *) = 1; 442 m->m_len = sizeof(int32_t); 443 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m); 444 } 445 if ((so->so_proto->pr_domain->dom_family == AF_INET 446 #ifdef INET6 447 || so->so_proto->pr_domain->dom_family == AF_INET6 448 #endif 449 ) && 450 so->so_proto->pr_protocol == IPPROTO_TCP) { 451 m = m_get(M_WAIT, MT_SOOPTS); 452 MCLAIM(m, &nfs_mowner); 453 *mtod(m, int32_t *) = 1; 454 m->m_len = sizeof(int32_t); 455 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m); 456 } 457 so->so_rcv.sb_flags &= ~SB_NOINTR; 458 so->so_rcv.sb_timeo = 0; 459 so->so_snd.sb_flags &= ~SB_NOINTR; 460 so->so_snd.sb_timeo = 0; 461 if (tslp) { 462 slp = tslp; 463 } else { 464 slp = nfsrv_sockalloc(); 465 } 466 slp->ns_so = so; 467 slp->ns_nam = mynam; 468 mutex_enter(&fp->f_lock); 469 fp->f_count++; 470 mutex_exit(&fp->f_lock); 471 slp->ns_fp = fp; 472 slp->ns_flags = SLP_VALID; 473 slp->ns_aflags = SLP_A_NEEDQ; 474 slp->ns_gflags = 0; 475 slp->ns_sflags = 0; 476 KERNEL_LOCK(1, curlwp); 477 s = splsoftnet(); 478 so->so_upcallarg = (void *)slp; 479 so->so_upcall = nfsrv_soupcall; 480 so->so_rcv.sb_flags |= SB_UPCALL; 481 splx(s); 482 KERNEL_UNLOCK_ONE(curlwp); 483 nfsrv_wakenfsd(slp); 484 return (0); 485 } 486 487 /* 488 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 489 * until it is killed by a signal. 490 */ 491 int 492 nfssvc_nfsd(nsd, argp, l) 493 struct nfsd_srvargs *nsd; 494 void *argp; 495 struct lwp *l; 496 { 497 struct timeval tv; 498 struct mbuf *m; 499 struct nfssvc_sock *slp; 500 struct nfsd *nfsd = nsd->nsd_nfsd; 501 struct nfsrv_descript *nd = NULL; 502 struct mbuf *mreq; 503 u_quad_t cur_usec; 504 int error = 0, cacherep, siz, sotype, writes_todo; 505 struct proc *p = l->l_proc; 506 int s; 507 bool doreinit; 508 509 #ifndef nolint 510 cacherep = RC_DOIT; 511 writes_todo = 0; 512 #endif 513 uvm_lwp_hold(l); 514 if (nfsd == NULL) { 515 nsd->nsd_nfsd = nfsd = kmem_alloc(sizeof(*nfsd), KM_SLEEP); 516 memset(nfsd, 0, sizeof (struct nfsd)); 517 cv_init(&nfsd->nfsd_cv, "nfsd"); 518 nfsd->nfsd_procp = p; 519 mutex_enter(&nfsd_lock); 520 while ((nfssvc_sockhead_flag & SLP_INIT) != 0) { 521 KASSERT(nfs_numnfsd == 0); 522 cv_wait(&nfsd_initcv, &nfsd_lock); 523 } 524 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 525 nfs_numnfsd++; 526 mutex_exit(&nfsd_lock); 527 } 528 /* 529 * Loop getting rpc requests until SIGKILL. 530 */ 531 for (;;) { 532 bool dummy; 533 534 if ((curcpu()->ci_schedstate.spc_flags & SPCF_SHOULDYIELD) 535 != 0) { 536 preempt(); 537 } 538 if (nfsd->nfsd_slp == NULL) { 539 mutex_enter(&nfsd_lock); 540 while (nfsd->nfsd_slp == NULL && 541 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 542 SLIST_INSERT_HEAD(&nfsd_idle_head, nfsd, 543 nfsd_idle); 544 error = cv_wait_sig(&nfsd->nfsd_cv, &nfsd_lock); 545 if (error) { 546 slp = nfsd->nfsd_slp; 547 nfsd->nfsd_slp = NULL; 548 if (!slp) 549 SLIST_REMOVE(&nfsd_idle_head, 550 nfsd, nfsd, nfsd_idle); 551 mutex_exit(&nfsd_lock); 552 if (slp) { 553 nfsrv_wakenfsd(slp); 554 nfsrv_slpderef(slp); 555 } 556 goto done; 557 } 558 } 559 if (nfsd->nfsd_slp == NULL && 560 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 561 slp = TAILQ_FIRST(&nfssvc_sockpending); 562 if (slp) { 563 KASSERT((slp->ns_gflags & SLP_G_DOREC) 564 != 0); 565 TAILQ_REMOVE(&nfssvc_sockpending, slp, 566 ns_pending); 567 slp->ns_gflags &= ~SLP_G_DOREC; 568 slp->ns_sref++; 569 nfsd->nfsd_slp = slp; 570 } else 571 nfsd_head_flag &= ~NFSD_CHECKSLP; 572 } 573 KASSERT(nfsd->nfsd_slp == NULL || 574 nfsd->nfsd_slp->ns_sref > 0); 575 mutex_exit(&nfsd_lock); 576 if ((slp = nfsd->nfsd_slp) == NULL) 577 continue; 578 if (slp->ns_flags & SLP_VALID) { 579 bool more; 580 581 if (nfsdsock_testbits(slp, SLP_A_NEEDQ)) { 582 nfsrv_rcv(slp); 583 } 584 if (nfsdsock_testbits(slp, SLP_A_DISCONN)) { 585 nfsrv_zapsock(slp); 586 } 587 error = nfsrv_dorec(slp, nfsd, &nd, &more); 588 getmicrotime(&tv); 589 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 590 (u_quad_t)tv.tv_usec; 591 writes_todo = 0; 592 if (error) { 593 struct nfsrv_descript *nd2; 594 595 mutex_enter(&nfsd_lock); 596 nd2 = LIST_FIRST(&slp->ns_tq); 597 if (nd2 != NULL && 598 nd2->nd_time <= cur_usec) { 599 error = 0; 600 cacherep = RC_DOIT; 601 writes_todo = 1; 602 } 603 mutex_exit(&nfsd_lock); 604 } 605 if (error == 0 && more) { 606 nfsrv_wakenfsd(slp); 607 } 608 } 609 } else { 610 error = 0; 611 slp = nfsd->nfsd_slp; 612 } 613 KASSERT(slp != NULL); 614 KASSERT(nfsd->nfsd_slp == slp); 615 if (error || (slp->ns_flags & SLP_VALID) == 0) { 616 if (nd) { 617 nfsdreq_free(nd); 618 nd = NULL; 619 } 620 nfsd->nfsd_slp = NULL; 621 nfsrv_slpderef(slp); 622 continue; 623 } 624 sotype = slp->ns_so->so_type; 625 if (nd) { 626 getmicrotime(&nd->nd_starttime); 627 if (nd->nd_nam2) 628 nd->nd_nam = nd->nd_nam2; 629 else 630 nd->nd_nam = slp->ns_nam; 631 632 /* 633 * Check to see if authorization is needed. 634 */ 635 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 636 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 637 nsd->nsd_haddr = mtod(nd->nd_nam, 638 struct sockaddr_in *)->sin_addr.s_addr; 639 nsd->nsd_authlen = nfsd->nfsd_authlen; 640 nsd->nsd_verflen = nfsd->nfsd_verflen; 641 if (!copyout(nfsd->nfsd_authstr, 642 nsd->nsd_authstr, nfsd->nfsd_authlen) && 643 !copyout(nfsd->nfsd_verfstr, 644 nsd->nsd_verfstr, nfsd->nfsd_verflen) && 645 !copyout(nsd, argp, sizeof (*nsd))) { 646 uvm_lwp_rele(l); 647 return (ENEEDAUTH); 648 } 649 cacherep = RC_DROPIT; 650 } else 651 cacherep = nfsrv_getcache(nd, slp, &mreq); 652 653 if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 654 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 655 nd->nd_procnum = NFSPROC_NOOP; 656 nd->nd_repstat = 657 (NFSERR_AUTHERR | AUTH_TOOWEAK); 658 cacherep = RC_DOIT; 659 } 660 } 661 662 /* 663 * Loop to get all the write rpc relies that have been 664 * gathered together. 665 */ 666 do { 667 switch (cacherep) { 668 case RC_DOIT: 669 mreq = NULL; 670 netexport_rdlock(); 671 if (writes_todo || nd == NULL || 672 (!(nd->nd_flag & ND_NFSV3) && 673 nd->nd_procnum == NFSPROC_WRITE && 674 nfsrvw_procrastinate > 0)) 675 error = nfsrv_writegather(&nd, slp, 676 l, &mreq); 677 else 678 error = 679 (*(nfsrv3_procs[nd->nd_procnum])) 680 (nd, slp, l, &mreq); 681 netexport_rdunlock(); 682 if (mreq == NULL) { 683 if (nd != NULL) { 684 if (nd->nd_nam2) 685 m_free(nd->nd_nam2); 686 if (nd->nd_mrep) 687 m_freem(nd->nd_mrep); 688 } 689 break; 690 } 691 if (error) { 692 nfsstats.srv_errs++; 693 nfsrv_updatecache(nd, false, mreq); 694 if (nd->nd_nam2) 695 m_freem(nd->nd_nam2); 696 break; 697 } 698 nfsstats.srvrpccnt[nd->nd_procnum]++; 699 nfsrv_updatecache(nd, true, mreq); 700 nd->nd_mrep = (struct mbuf *)0; 701 case RC_REPLY: 702 m = mreq; 703 siz = 0; 704 while (m) { 705 siz += m->m_len; 706 m = m->m_next; 707 } 708 if (siz <= 0 || siz > NFS_MAXPACKET) { 709 printf("mbuf siz=%d\n",siz); 710 panic("Bad nfs svc reply"); 711 } 712 m = mreq; 713 m->m_pkthdr.len = siz; 714 m->m_pkthdr.rcvif = (struct ifnet *)0; 715 /* 716 * For stream protocols, prepend a Sun RPC 717 * Record Mark. 718 */ 719 if (sotype == SOCK_STREAM) { 720 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 721 *mtod(m, u_int32_t *) = 722 htonl(0x80000000 | siz); 723 } 724 nd->nd_mreq = m; 725 if (nfsrtton) { 726 nfsd_rt(slp->ns_so->so_type, nd, 727 cacherep); 728 } 729 error = nfsdsock_sendreply(slp, nd); 730 nd = NULL; 731 if (error == EPIPE) 732 nfsrv_zapsock(slp); 733 if (error == EINTR || error == ERESTART) { 734 nfsd->nfsd_slp = NULL; 735 nfsrv_slpderef(slp); 736 goto done; 737 } 738 break; 739 case RC_DROPIT: 740 if (nfsrtton) 741 nfsd_rt(sotype, nd, cacherep); 742 m_freem(nd->nd_mrep); 743 m_freem(nd->nd_nam2); 744 break; 745 } 746 if (nd) { 747 nfsdreq_free(nd); 748 nd = NULL; 749 } 750 751 /* 752 * Check to see if there are outstanding writes that 753 * need to be serviced. 754 */ 755 getmicrotime(&tv); 756 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 757 (u_quad_t)tv.tv_usec; 758 s = splsoftclock(); 759 if (LIST_FIRST(&slp->ns_tq) && 760 LIST_FIRST(&slp->ns_tq)->nd_time <= cur_usec) { 761 cacherep = RC_DOIT; 762 writes_todo = 1; 763 } else 764 writes_todo = 0; 765 splx(s); 766 } while (writes_todo); 767 if (nfsrv_dorec(slp, nfsd, &nd, &dummy)) { 768 nfsd->nfsd_slp = NULL; 769 nfsrv_slpderef(slp); 770 } 771 } 772 done: 773 mutex_enter(&nfsd_lock); 774 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 775 doreinit = --nfs_numnfsd == 0; 776 if (doreinit) 777 nfssvc_sockhead_flag |= SLP_INIT; 778 mutex_exit(&nfsd_lock); 779 cv_destroy(&nfsd->nfsd_cv); 780 kmem_free(nfsd, sizeof(*nfsd)); 781 nsd->nsd_nfsd = NULL; 782 if (doreinit) 783 nfsrv_init(true); /* Reinitialize everything */ 784 uvm_lwp_rele(l); 785 return (error); 786 } 787 788 /* 789 * Shut down a socket associated with an nfssvc_sock structure. 790 * Should be called with the send lock set, if required. 791 * The trick here is to increment the sref at the start, so that the nfsds 792 * will stop using it and clear ns_flag at the end so that it will not be 793 * reassigned during cleanup. 794 * 795 * called at splsoftnet. 796 */ 797 void 798 nfsrv_zapsock(slp) 799 struct nfssvc_sock *slp; 800 { 801 struct nfsuid *nuidp, *nnuidp; 802 struct nfsrv_descript *nwp; 803 struct socket *so; 804 struct mbuf *m; 805 int s; 806 807 if (nfsdsock_drain(slp)) { 808 return; 809 } 810 mutex_enter(&nfsd_lock); 811 if (slp->ns_gflags & SLP_G_DOREC) { 812 TAILQ_REMOVE(&nfssvc_sockpending, slp, ns_pending); 813 slp->ns_gflags &= ~SLP_G_DOREC; 814 } 815 mutex_exit(&nfsd_lock); 816 817 so = slp->ns_so; 818 KASSERT(so != NULL); 819 KERNEL_LOCK(1, curlwp); 820 s = splsoftnet(); 821 so->so_upcall = NULL; 822 so->so_upcallarg = NULL; 823 so->so_rcv.sb_flags &= ~SB_UPCALL; 824 splx(s); 825 soshutdown(so, SHUT_RDWR); 826 KERNEL_UNLOCK_ONE(curlwp); 827 828 if (slp->ns_nam) 829 m_free(slp->ns_nam); 830 m_freem(slp->ns_raw); 831 m = slp->ns_rec; 832 while (m != NULL) { 833 struct mbuf *n; 834 835 n = m->m_nextpkt; 836 m_freem(m); 837 m = n; 838 } 839 for (nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); nuidp != 0; 840 nuidp = nnuidp) { 841 nnuidp = TAILQ_NEXT(nuidp, nu_lru); 842 LIST_REMOVE(nuidp, nu_hash); 843 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 844 if (nuidp->nu_flag & NU_NAM) 845 m_freem(nuidp->nu_nam); 846 kmem_free(nuidp, sizeof(*nuidp)); 847 } 848 mutex_enter(&nfsd_lock); 849 while ((nwp = LIST_FIRST(&slp->ns_tq)) != NULL) { 850 LIST_REMOVE(nwp, nd_tq); 851 mutex_exit(&nfsd_lock); 852 nfsdreq_free(nwp); 853 mutex_enter(&nfsd_lock); 854 } 855 mutex_exit(&nfsd_lock); 856 } 857 858 /* 859 * Derefence a server socket structure. If it has no more references and 860 * is no longer valid, you can throw it away. 861 */ 862 void 863 nfsrv_slpderef(slp) 864 struct nfssvc_sock *slp; 865 { 866 uint32_t ref; 867 868 mutex_enter(&nfsd_lock); 869 KASSERT(slp->ns_sref > 0); 870 ref = --slp->ns_sref; 871 mutex_exit(&nfsd_lock); 872 if (ref == 0 && (slp->ns_flags & SLP_VALID) == 0) { 873 file_t *fp; 874 875 mutex_enter(&nfsd_lock); 876 KASSERT((slp->ns_gflags & SLP_G_DOREC) == 0); 877 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 878 mutex_exit(&nfsd_lock); 879 880 fp = slp->ns_fp; 881 if (fp != NULL) { 882 slp->ns_fp = NULL; 883 KASSERT(fp != NULL); 884 KASSERT(fp->f_data == slp->ns_so); 885 KASSERT(fp->f_count > 0); 886 closef(fp); 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; 904 905 if (!terminating) { 906 /* XXX could be IPL_SOFTNET */ 907 mutex_init(&nfsd_lock, MUTEX_DRIVER, IPL_VM); 908 cv_init(&nfsd_initcv, "nfsdinit"); 909 } 910 911 mutex_enter(&nfsd_lock); 912 if (!terminating && (nfssvc_sockhead_flag & SLP_INIT) != 0) 913 panic("nfsd init"); 914 nfssvc_sockhead_flag |= SLP_INIT; 915 916 if (terminating) { 917 KASSERT(SLIST_EMPTY(&nfsd_idle_head)); 918 KASSERT(TAILQ_EMPTY(&nfsd_head)); 919 while ((slp = TAILQ_FIRST(&nfssvc_sockhead)) != NULL) { 920 mutex_exit(&nfsd_lock); 921 KASSERT(slp->ns_sref == 0); 922 slp->ns_sref++; 923 nfsrv_zapsock(slp); 924 nfsrv_slpderef(slp); 925 mutex_enter(&nfsd_lock); 926 } 927 KASSERT(TAILQ_EMPTY(&nfssvc_sockpending)); 928 mutex_exit(&nfsd_lock); 929 nfsrv_cleancache(); /* And clear out server cache */ 930 } else { 931 mutex_exit(&nfsd_lock); 932 nfs_pub.np_valid = 0; 933 } 934 935 TAILQ_INIT(&nfssvc_sockhead); 936 TAILQ_INIT(&nfssvc_sockpending); 937 938 TAILQ_INIT(&nfsd_head); 939 SLIST_INIT(&nfsd_idle_head); 940 nfsd_head_flag &= ~NFSD_CHECKSLP; 941 942 nfs_udpsock = nfsrv_sockalloc(); 943 944 #ifdef INET6 945 nfs_udp6sock = nfsrv_sockalloc(); 946 #endif 947 948 #ifdef ISO 949 nfs_cltpsock = nfsrv_sockalloc(); 950 #endif 951 952 mutex_enter(&nfsd_lock); 953 nfssvc_sockhead_flag &= ~SLP_INIT; 954 cv_broadcast(&nfsd_initcv); 955 mutex_exit(&nfsd_lock); 956 } 957 958 /* 959 * Add entries to the server monitor log. 960 */ 961 static void 962 nfsd_rt(sotype, nd, cacherep) 963 int sotype; 964 struct nfsrv_descript *nd; 965 int cacherep; 966 { 967 struct timeval tv; 968 struct drt *rt; 969 970 rt = &nfsdrt.drt[nfsdrt.pos]; 971 if (cacherep == RC_DOIT) 972 rt->flag = 0; 973 else if (cacherep == RC_REPLY) 974 rt->flag = DRT_CACHEREPLY; 975 else 976 rt->flag = DRT_CACHEDROP; 977 if (sotype == SOCK_STREAM) 978 rt->flag |= DRT_TCP; 979 if (nd->nd_flag & ND_NFSV3) 980 rt->flag |= DRT_NFSV3; 981 rt->proc = nd->nd_procnum; 982 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 983 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 984 else 985 rt->ipadr = INADDR_ANY; 986 getmicrotime(&tv); 987 rt->resptime = ((tv.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 988 (tv.tv_usec - nd->nd_starttime.tv_usec); 989 rt->tstamp = tv; 990 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 991 } 992 #endif /* NFSSERVER */ 993 994 #ifdef NFS 995 996 int nfs_defect = 0; 997 /* 998 * Asynchronous I/O threads for client nfs. 999 * They do read-ahead and write-behind operations on the block I/O cache. 1000 * Never returns unless it fails or gets killed. 1001 */ 1002 1003 static void 1004 nfssvc_iod(void *arg) 1005 { 1006 struct buf *bp; 1007 struct nfs_iod *myiod; 1008 struct nfsmount *nmp; 1009 1010 myiod = kmem_alloc(sizeof(*myiod), KM_SLEEP); 1011 mutex_init(&myiod->nid_lock, MUTEX_DEFAULT, IPL_NONE); 1012 cv_init(&myiod->nid_cv, "nfsiod"); 1013 myiod->nid_exiting = false; 1014 myiod->nid_mount = NULL; 1015 mutex_enter(&nfs_iodlist_lock); 1016 LIST_INSERT_HEAD(&nfs_iodlist_all, myiod, nid_all); 1017 mutex_exit(&nfs_iodlist_lock); 1018 1019 for (;;) { 1020 mutex_enter(&nfs_iodlist_lock); 1021 LIST_INSERT_HEAD(&nfs_iodlist_idle, myiod, nid_idle); 1022 mutex_exit(&nfs_iodlist_lock); 1023 1024 mutex_enter(&myiod->nid_lock); 1025 while (/*CONSTCOND*/ true) { 1026 nmp = myiod->nid_mount; 1027 if (nmp) { 1028 myiod->nid_mount = NULL; 1029 break; 1030 } 1031 if (__predict_false(myiod->nid_exiting)) { 1032 /* 1033 * drop nid_lock to preserve locking order. 1034 */ 1035 mutex_exit(&myiod->nid_lock); 1036 mutex_enter(&nfs_iodlist_lock); 1037 mutex_enter(&myiod->nid_lock); 1038 /* 1039 * recheck nid_mount because nfs_asyncio can 1040 * pick us in the meantime as we are still on 1041 * nfs_iodlist_lock. 1042 */ 1043 if (myiod->nid_mount != NULL) { 1044 mutex_exit(&nfs_iodlist_lock); 1045 continue; 1046 } 1047 LIST_REMOVE(myiod, nid_idle); 1048 mutex_exit(&nfs_iodlist_lock); 1049 goto quit; 1050 } 1051 cv_wait(&myiod->nid_cv, &myiod->nid_lock); 1052 } 1053 mutex_exit(&myiod->nid_lock); 1054 1055 mutex_enter(&nmp->nm_lock); 1056 while ((bp = TAILQ_FIRST(&nmp->nm_bufq)) != NULL) { 1057 /* Take one off the front of the list */ 1058 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 1059 nmp->nm_bufqlen--; 1060 if (nmp->nm_bufqlen < 2 * nmp->nm_bufqiods) { 1061 cv_broadcast(&nmp->nm_aiocv); 1062 } 1063 mutex_exit(&nmp->nm_lock); 1064 KERNEL_LOCK(1, curlwp); 1065 (void)nfs_doio(bp); 1066 KERNEL_UNLOCK_LAST(curlwp); 1067 mutex_enter(&nmp->nm_lock); 1068 /* 1069 * If there are more than one iod on this mount, 1070 * then defect so that the iods can be shared out 1071 * fairly between the mounts 1072 */ 1073 if (nfs_defect && nmp->nm_bufqiods > 1) { 1074 break; 1075 } 1076 } 1077 KASSERT(nmp->nm_bufqiods > 0); 1078 nmp->nm_bufqiods--; 1079 mutex_exit(&nmp->nm_lock); 1080 } 1081 quit: 1082 KASSERT(myiod->nid_mount == NULL); 1083 mutex_exit(&myiod->nid_lock); 1084 1085 cv_destroy(&myiod->nid_cv); 1086 mutex_destroy(&myiod->nid_lock); 1087 kmem_free(myiod, sizeof(*myiod)); 1088 1089 kthread_exit(0); 1090 } 1091 1092 void 1093 nfs_iodinit() 1094 { 1095 1096 mutex_init(&nfs_iodlist_lock, MUTEX_DEFAULT, IPL_NONE); 1097 LIST_INIT(&nfs_iodlist_all); 1098 LIST_INIT(&nfs_iodlist_idle); 1099 } 1100 1101 int 1102 nfs_set_niothreads(int newval) 1103 { 1104 struct nfs_iod *nid; 1105 int error = 0; 1106 1107 #if defined(MULTIPROCESSOR) 1108 int hold_count; 1109 #endif /* defined(MULTIPROCESSOR) */ 1110 1111 KERNEL_UNLOCK_ALL(curlwp, &hold_count); 1112 1113 mutex_enter(&nfs_iodlist_lock); 1114 /* clamp to sane range */ 1115 nfs_niothreads = max(0, min(newval, NFS_MAXASYNCDAEMON)); 1116 1117 while (nfs_numasync != nfs_niothreads && error == 0) { 1118 while (nfs_numasync < nfs_niothreads) { 1119 1120 /* 1121 * kthread_create can wait for pagedaemon and 1122 * pagedaemon can wait for nfsiod which needs to acquire 1123 * nfs_iodlist_lock. 1124 */ 1125 1126 mutex_exit(&nfs_iodlist_lock); 1127 error = kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, 1128 nfssvc_iod, NULL, NULL, "nfsio"); 1129 mutex_enter(&nfs_iodlist_lock); 1130 if (error) { 1131 /* give up */ 1132 nfs_niothreads = nfs_numasync; 1133 break; 1134 } 1135 nfs_numasync++; 1136 } 1137 while (nfs_numasync > nfs_niothreads) { 1138 nid = LIST_FIRST(&nfs_iodlist_all); 1139 if (nid == NULL) { 1140 /* iod has not started yet. */ 1141 kpause("nfsiorm", false, hz, &nfs_iodlist_lock); 1142 continue; 1143 } 1144 LIST_REMOVE(nid, nid_all); 1145 mutex_enter(&nid->nid_lock); 1146 KASSERT(!nid->nid_exiting); 1147 nid->nid_exiting = true; 1148 cv_signal(&nid->nid_cv); 1149 mutex_exit(&nid->nid_lock); 1150 nfs_numasync--; 1151 } 1152 } 1153 mutex_exit(&nfs_iodlist_lock); 1154 1155 KERNEL_LOCK(hold_count, curlwp); 1156 return error; 1157 } 1158 1159 /* 1160 * Get an authorization string for the uid by having the mount_nfs sitting 1161 * on this mount point porpous out of the kernel and do it. 1162 */ 1163 int 1164 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1165 struct nfsmount *nmp; 1166 struct nfsreq *rep; 1167 kauth_cred_t cred; 1168 char **auth_str; 1169 int *auth_len; 1170 char *verf_str; 1171 int *verf_len; 1172 NFSKERBKEY_T key; /* return session key */ 1173 { 1174 int error = 0; 1175 1176 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1177 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1178 (void) tsleep((void *)&nmp->nm_authtype, PSOCK, 1179 "nfsauth1", 2 * hz); 1180 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1181 if (error) { 1182 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1183 return (error); 1184 } 1185 } 1186 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1187 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1188 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1189 nmp->nm_verfstr = verf_str; 1190 nmp->nm_verflen = *verf_len; 1191 nmp->nm_authuid = kauth_cred_geteuid(cred); 1192 wakeup((void *)&nmp->nm_authstr); 1193 1194 /* 1195 * And wait for mount_nfs to do its stuff. 1196 */ 1197 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1198 (void) tsleep((void *)&nmp->nm_authlen, PSOCK, 1199 "nfsauth2", 2 * hz); 1200 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1201 } 1202 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1203 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1204 error = EAUTH; 1205 } 1206 if (error) 1207 free((void *)*auth_str, M_TEMP); 1208 else { 1209 *auth_len = nmp->nm_authlen; 1210 *verf_len = nmp->nm_verflen; 1211 memcpy(key, nmp->nm_key, sizeof (NFSKERBKEY_T)); 1212 } 1213 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1214 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1215 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1216 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1217 wakeup((void *)&nmp->nm_authtype); 1218 } 1219 return (error); 1220 } 1221 1222 /* 1223 * Get a nickname authenticator and verifier. 1224 */ 1225 int 1226 nfs_getnickauth(struct nfsmount *nmp, kauth_cred_t cred, char **auth_str, 1227 int *auth_len, char *verf_str, int verf_len) 1228 { 1229 struct timeval ktvin, ktvout, tv; 1230 struct nfsuid *nuidp; 1231 u_int32_t *nickp, *verfp; 1232 1233 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1234 1235 #ifdef DIAGNOSTIC 1236 if (verf_len < (4 * NFSX_UNSIGNED)) 1237 panic("nfs_getnickauth verf too small"); 1238 #endif 1239 LIST_FOREACH(nuidp, NMUIDHASH(nmp, kauth_cred_geteuid(cred)), nu_hash) { 1240 if (kauth_cred_geteuid(nuidp->nu_cr) == kauth_cred_geteuid(cred)) 1241 break; 1242 } 1243 if (!nuidp || nuidp->nu_expire < time_second) 1244 return (EACCES); 1245 1246 /* 1247 * Move to the end of the lru list (end of lru == most recently used). 1248 */ 1249 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1250 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1251 1252 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1253 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1254 *nickp = txdr_unsigned(nuidp->nu_nickname); 1255 *auth_str = (char *)nickp; 1256 *auth_len = 2 * NFSX_UNSIGNED; 1257 1258 /* 1259 * Now we must encrypt the verifier and package it up. 1260 */ 1261 verfp = (u_int32_t *)verf_str; 1262 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1263 getmicrotime(&tv); 1264 if (tv.tv_sec > nuidp->nu_timestamp.tv_sec || 1265 (tv.tv_sec == nuidp->nu_timestamp.tv_sec && 1266 tv.tv_usec > nuidp->nu_timestamp.tv_usec)) 1267 nuidp->nu_timestamp = tv; 1268 else 1269 nuidp->nu_timestamp.tv_usec++; 1270 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1271 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1272 1273 /* 1274 * Now encrypt the timestamp verifier in ecb mode using the session 1275 * key. 1276 */ 1277 #ifdef NFSKERB 1278 XXX 1279 #endif 1280 1281 *verfp++ = ktvout.tv_sec; 1282 *verfp++ = ktvout.tv_usec; 1283 *verfp = 0; 1284 return (0); 1285 } 1286 1287 /* 1288 * Save the current nickname in a hash list entry on the mount point. 1289 */ 1290 int 1291 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1292 struct nfsmount *nmp; 1293 kauth_cred_t cred; 1294 int len; 1295 NFSKERBKEY_T key; 1296 struct mbuf **mdp; 1297 char **dposp; 1298 struct mbuf *mrep; 1299 { 1300 struct nfsuid *nuidp; 1301 u_int32_t *tl; 1302 int32_t t1; 1303 struct mbuf *md = *mdp; 1304 struct timeval ktvin, ktvout; 1305 u_int32_t nick; 1306 char *dpos = *dposp, *cp2; 1307 int deltasec, error = 0; 1308 1309 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1310 1311 if (len == (3 * NFSX_UNSIGNED)) { 1312 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1313 ktvin.tv_sec = *tl++; 1314 ktvin.tv_usec = *tl++; 1315 nick = fxdr_unsigned(u_int32_t, *tl); 1316 1317 /* 1318 * Decrypt the timestamp in ecb mode. 1319 */ 1320 #ifdef NFSKERB 1321 XXX 1322 #endif 1323 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1324 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1325 deltasec = time_second - ktvout.tv_sec; 1326 if (deltasec < 0) 1327 deltasec = -deltasec; 1328 /* 1329 * If ok, add it to the hash list for the mount point. 1330 */ 1331 if (deltasec <= NFS_KERBCLOCKSKEW) { 1332 if (nmp->nm_numuids < nuidhash_max) { 1333 nmp->nm_numuids++; 1334 nuidp = kmem_alloc(sizeof(*nuidp), KM_SLEEP); 1335 } else { 1336 nuidp = TAILQ_FIRST(&nmp->nm_uidlruhead); 1337 LIST_REMOVE(nuidp, nu_hash); 1338 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1339 nu_lru); 1340 } 1341 nuidp->nu_flag = 0; 1342 kauth_cred_seteuid(nuidp->nu_cr, kauth_cred_geteuid(cred)); 1343 nuidp->nu_expire = time_second + NFS_KERBTTL; 1344 nuidp->nu_timestamp = ktvout; 1345 nuidp->nu_nickname = nick; 1346 memcpy(nuidp->nu_key, key, sizeof (NFSKERBKEY_T)); 1347 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1348 nu_lru); 1349 LIST_INSERT_HEAD(NMUIDHASH(nmp, kauth_cred_geteuid(cred)), 1350 nuidp, nu_hash); 1351 } 1352 } else 1353 nfsm_adv(nfsm_rndup(len)); 1354 nfsmout: 1355 *mdp = md; 1356 *dposp = dpos; 1357 return (error); 1358 } 1359 #endif /* NFS */ 1360
Indexes created Wed Oct 22 00:09:40 GMT 2025