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sys/nfs/nfs_syscalls.c
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1 /* $NetBSD: nfs_syscalls.c,v 1.140.4.1 2009/04/13 21:21:30 snj 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 1.140.4.1 2009/04/13 21:21:30 snj 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 if ((fp = fd_getfile(nfsdarg.sock)) == NULL) 202 return (EBADF); 203 if (fp->f_type != DTYPE_SOCKET) { 204 fd_putfile(nfsdarg.sock); 205 return (ENOTSOCK); 206 } 207 if (error) 208 return (error); 209 /* 210 * Get the client address for connected sockets. 211 */ 212 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 213 nam = (struct mbuf *)0; 214 else { 215 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen, 216 MT_SONAME); 217 if (error) { 218 fd_putfile(nfsdarg.sock); 219 return (error); 220 } 221 } 222 error = nfssvc_addsock(fp, nam); 223 fd_putfile(nfsdarg.sock); 224 #endif /* !NFSSERVER */ 225 } else if (SCARG(uap, flag) & NFSSVC_SETEXPORTSLIST) { 226 #ifndef NFSSERVER 227 error = ENOSYS; 228 #else 229 struct export_args *args; 230 struct mountd_exports_list mel; 231 232 error = copyin(SCARG(uap, argp), &mel, sizeof(mel)); 233 if (error != 0) 234 return error; 235 236 args = (struct export_args *)malloc(mel.mel_nexports * 237 sizeof(struct export_args), M_TEMP, M_WAITOK); 238 error = copyin(mel.mel_exports, args, mel.mel_nexports * 239 sizeof(struct export_args)); 240 if (error != 0) { 241 free(args, M_TEMP); 242 return error; 243 } 244 mel.mel_exports = args; 245 246 error = mountd_set_exports_list(&mel, l); 247 248 free(args, M_TEMP); 249 #endif /* !NFSSERVER */ 250 } else { 251 #ifndef NFSSERVER 252 error = ENOSYS; 253 #else 254 error = copyin(SCARG(uap, argp), (void *)nsd, sizeof (*nsd)); 255 if (error) 256 return (error); 257 if ((SCARG(uap, flag) & NFSSVC_AUTHIN) && 258 ((nfsd = nsd->nsd_nfsd)) != NULL && 259 (nfsd->nfsd_slp->ns_flags & SLP_VALID)) { 260 slp = nfsd->nfsd_slp; 261 262 /* 263 * First check to see if another nfsd has already 264 * added this credential. 265 */ 266 LIST_FOREACH(nuidp, NUIDHASH(slp, nsd->nsd_cr.cr_uid), 267 nu_hash) { 268 if (kauth_cred_geteuid(nuidp->nu_cr) == 269 nsd->nsd_cr.cr_uid && 270 (!nfsd->nfsd_nd->nd_nam2 || 271 netaddr_match(NU_NETFAM(nuidp), 272 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 273 break; 274 } 275 if (nuidp) { 276 kauth_cred_hold(nuidp->nu_cr); 277 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 278 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 279 } else { 280 /* 281 * Nope, so we will. 282 */ 283 if (slp->ns_numuids < nuidhash_max) { 284 slp->ns_numuids++; 285 nuidp = kmem_alloc(sizeof(*nuidp), KM_SLEEP); 286 } else 287 nuidp = (struct nfsuid *)0; 288 if ((slp->ns_flags & SLP_VALID) == 0) { 289 if (nuidp) 290 kmem_free(nuidp, sizeof(*nuidp)); 291 } else { 292 if (nuidp == (struct nfsuid *)0) { 293 nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); 294 LIST_REMOVE(nuidp, nu_hash); 295 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 296 nu_lru); 297 if (nuidp->nu_flag & NU_NAM) 298 m_freem(nuidp->nu_nam); 299 } 300 nuidp->nu_flag = 0; 301 kauth_uucred_to_cred(nuidp->nu_cr, 302 &nsd->nsd_cr); 303 nuidp->nu_timestamp = nsd->nsd_timestamp; 304 nuidp->nu_expire = time_second + nsd->nsd_ttl; 305 /* 306 * and save the session key in nu_key. 307 */ 308 memcpy(nuidp->nu_key, nsd->nsd_key, 309 sizeof(nsd->nsd_key)); 310 if (nfsd->nfsd_nd->nd_nam2) { 311 struct sockaddr_in *saddr; 312 313 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 314 struct sockaddr_in *); 315 switch (saddr->sin_family) { 316 case AF_INET: 317 nuidp->nu_flag |= NU_INETADDR; 318 nuidp->nu_inetaddr = 319 saddr->sin_addr.s_addr; 320 break; 321 #ifdef INET6 322 case AF_INET6: 323 #endif 324 #ifdef ISO 325 case AF_ISO: 326 #endif 327 nuidp->nu_flag |= NU_NAM; 328 nuidp->nu_nam = m_copym( 329 nfsd->nfsd_nd->nd_nam2, 0, 330 M_COPYALL, M_WAIT); 331 break; 332 default: 333 return EAFNOSUPPORT; 334 }; 335 } 336 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 337 nu_lru); 338 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 339 nuidp, nu_hash); 340 kauth_cred_hold(nuidp->nu_cr); 341 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 342 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 343 } 344 } 345 } 346 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 347 (nfsd = nsd->nsd_nfsd)) 348 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 349 error = nfssvc_nfsd(nsd, SCARG(uap, argp), l); 350 #endif /* !NFSSERVER */ 351 } 352 if (error == EINTR || error == ERESTART) 353 error = 0; 354 return (error); 355 } 356 357 #ifdef NFSSERVER 358 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure"); 359 360 static struct nfssvc_sock * 361 nfsrv_sockalloc() 362 { 363 struct nfssvc_sock *slp; 364 365 slp = kmem_alloc(sizeof(*slp), KM_SLEEP); 366 memset(slp, 0, sizeof (struct nfssvc_sock)); 367 mutex_init(&slp->ns_lock, MUTEX_DRIVER, IPL_SOFTNET); 368 mutex_init(&slp->ns_alock, MUTEX_DRIVER, IPL_SOFTNET); 369 cv_init(&slp->ns_cv, "nfsdsock"); 370 TAILQ_INIT(&slp->ns_uidlruhead); 371 LIST_INIT(&slp->ns_tq); 372 SIMPLEQ_INIT(&slp->ns_sendq); 373 mutex_enter(&nfsd_lock); 374 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 375 mutex_exit(&nfsd_lock); 376 377 return slp; 378 } 379 380 static void 381 nfsrv_sockfree(struct nfssvc_sock *slp) 382 { 383 384 KASSERT(slp->ns_so == NULL); 385 KASSERT(slp->ns_fp == NULL); 386 KASSERT((slp->ns_flags & SLP_VALID) == 0); 387 mutex_destroy(&slp->ns_lock); 388 mutex_destroy(&slp->ns_alock); 389 cv_destroy(&slp->ns_cv); 390 kmem_free(slp, sizeof(*slp)); 391 } 392 393 /* 394 * Adds a socket to the list for servicing by nfsds. 395 */ 396 int 397 nfssvc_addsock(fp, mynam) 398 file_t *fp; 399 struct mbuf *mynam; 400 { 401 int siz; 402 struct nfssvc_sock *slp; 403 struct socket *so; 404 struct nfssvc_sock *tslp; 405 int error; 406 int val; 407 408 so = (struct socket *)fp->f_data; 409 tslp = (struct nfssvc_sock *)0; 410 /* 411 * Add it to the list, as required. 412 */ 413 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 414 #ifdef INET6 415 if (so->so_proto->pr_domain->dom_family == AF_INET6) 416 tslp = nfs_udp6sock; 417 else 418 #endif 419 tslp = nfs_udpsock; 420 if (tslp->ns_flags & SLP_VALID) { 421 m_freem(mynam); 422 return (EPERM); 423 } 424 #ifdef ISO 425 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 426 tslp = nfs_cltpsock; 427 if (tslp->ns_flags & SLP_VALID) { 428 m_freem(mynam); 429 return (EPERM); 430 } 431 #endif /* ISO */ 432 } 433 if (so->so_type == SOCK_STREAM) 434 siz = NFS_MAXPACKET + sizeof (u_long); 435 else 436 siz = NFS_MAXPACKET; 437 solock(so); 438 error = soreserve(so, siz, siz); 439 sounlock(so); 440 if (error) { 441 m_freem(mynam); 442 return (error); 443 } 444 445 /* 446 * Set protocol specific options { for now TCP only } and 447 * reserve some space. For datagram sockets, this can get called 448 * repeatedly for the same socket, but that isn't harmful. 449 */ 450 if (so->so_type == SOCK_STREAM) { 451 val = 1; 452 so_setsockopt(NULL, so, SOL_SOCKET, SO_KEEPALIVE, &val, 453 sizeof(val)); 454 } 455 if ((so->so_proto->pr_domain->dom_family == AF_INET 456 #ifdef INET6 457 || so->so_proto->pr_domain->dom_family == AF_INET6 458 #endif 459 ) && 460 so->so_proto->pr_protocol == IPPROTO_TCP) { 461 val = 1; 462 so_setsockopt(NULL, so, IPPROTO_TCP, TCP_NODELAY, &val, 463 sizeof(val)); 464 } 465 solock(so); 466 so->so_rcv.sb_flags &= ~SB_NOINTR; 467 so->so_rcv.sb_timeo = 0; 468 so->so_snd.sb_flags &= ~SB_NOINTR; 469 so->so_snd.sb_timeo = 0; 470 sounlock(so); 471 if (tslp) { 472 slp = tslp; 473 } else { 474 slp = nfsrv_sockalloc(); 475 } 476 slp->ns_so = so; 477 slp->ns_nam = mynam; 478 mutex_enter(&fp->f_lock); 479 fp->f_count++; 480 mutex_exit(&fp->f_lock); 481 slp->ns_fp = fp; 482 slp->ns_flags = SLP_VALID; 483 slp->ns_aflags = SLP_A_NEEDQ; 484 slp->ns_gflags = 0; 485 slp->ns_sflags = 0; 486 solock(so); 487 so->so_upcallarg = (void *)slp; 488 so->so_upcall = nfsrv_soupcall; 489 so->so_rcv.sb_flags |= SB_UPCALL; 490 sounlock(so); 491 nfsrv_wakenfsd(slp); 492 return (0); 493 } 494 495 /* 496 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 497 * until it is killed by a signal. 498 */ 499 int 500 nfssvc_nfsd(nsd, argp, l) 501 struct nfsd_srvargs *nsd; 502 void *argp; 503 struct lwp *l; 504 { 505 struct timeval tv; 506 struct mbuf *m; 507 struct nfssvc_sock *slp; 508 struct nfsd *nfsd = nsd->nsd_nfsd; 509 struct nfsrv_descript *nd = NULL; 510 struct mbuf *mreq; 511 u_quad_t cur_usec; 512 int error = 0, cacherep, siz, sotype, writes_todo; 513 struct proc *p = l->l_proc; 514 bool doreinit; 515 516 #ifndef nolint 517 cacherep = RC_DOIT; 518 writes_todo = 0; 519 #endif 520 uvm_lwp_hold(l); 521 if (nfsd == NULL) { 522 nsd->nsd_nfsd = nfsd = kmem_alloc(sizeof(*nfsd), KM_SLEEP); 523 memset(nfsd, 0, sizeof (struct nfsd)); 524 cv_init(&nfsd->nfsd_cv, "nfsd"); 525 nfsd->nfsd_procp = p; 526 mutex_enter(&nfsd_lock); 527 while ((nfssvc_sockhead_flag & SLP_INIT) != 0) { 528 KASSERT(nfs_numnfsd == 0); 529 cv_wait(&nfsd_initcv, &nfsd_lock); 530 } 531 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 532 nfs_numnfsd++; 533 mutex_exit(&nfsd_lock); 534 } 535 /* 536 * Loop getting rpc requests until SIGKILL. 537 */ 538 for (;;) { 539 bool dummy; 540 541 if ((curcpu()->ci_schedstate.spc_flags & SPCF_SHOULDYIELD) 542 != 0) { 543 preempt(); 544 } 545 if (nfsd->nfsd_slp == NULL) { 546 mutex_enter(&nfsd_lock); 547 while (nfsd->nfsd_slp == NULL && 548 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 549 SLIST_INSERT_HEAD(&nfsd_idle_head, nfsd, 550 nfsd_idle); 551 error = cv_wait_sig(&nfsd->nfsd_cv, &nfsd_lock); 552 if (error) { 553 slp = nfsd->nfsd_slp; 554 nfsd->nfsd_slp = NULL; 555 if (!slp) 556 SLIST_REMOVE(&nfsd_idle_head, 557 nfsd, nfsd, nfsd_idle); 558 mutex_exit(&nfsd_lock); 559 if (slp) { 560 nfsrv_wakenfsd(slp); 561 nfsrv_slpderef(slp); 562 } 563 goto done; 564 } 565 } 566 if (nfsd->nfsd_slp == NULL && 567 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 568 slp = TAILQ_FIRST(&nfssvc_sockpending); 569 if (slp) { 570 KASSERT((slp->ns_gflags & SLP_G_DOREC) 571 != 0); 572 TAILQ_REMOVE(&nfssvc_sockpending, slp, 573 ns_pending); 574 slp->ns_gflags &= ~SLP_G_DOREC; 575 slp->ns_sref++; 576 nfsd->nfsd_slp = slp; 577 } else 578 nfsd_head_flag &= ~NFSD_CHECKSLP; 579 } 580 KASSERT(nfsd->nfsd_slp == NULL || 581 nfsd->nfsd_slp->ns_sref > 0); 582 mutex_exit(&nfsd_lock); 583 if ((slp = nfsd->nfsd_slp) == NULL) 584 continue; 585 if (slp->ns_flags & SLP_VALID) { 586 bool more; 587 588 if (nfsdsock_testbits(slp, SLP_A_NEEDQ)) { 589 nfsrv_rcv(slp); 590 } 591 if (nfsdsock_testbits(slp, SLP_A_DISCONN)) { 592 nfsrv_zapsock(slp); 593 } 594 error = nfsrv_dorec(slp, nfsd, &nd, &more); 595 getmicrotime(&tv); 596 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 597 (u_quad_t)tv.tv_usec; 598 writes_todo = 0; 599 if (error) { 600 struct nfsrv_descript *nd2; 601 602 mutex_enter(&nfsd_lock); 603 nd2 = LIST_FIRST(&slp->ns_tq); 604 if (nd2 != NULL && 605 nd2->nd_time <= cur_usec) { 606 error = 0; 607 cacherep = RC_DOIT; 608 writes_todo = 1; 609 } 610 mutex_exit(&nfsd_lock); 611 } 612 if (error == 0 && more) { 613 nfsrv_wakenfsd(slp); 614 } 615 } 616 } else { 617 error = 0; 618 slp = nfsd->nfsd_slp; 619 } 620 KASSERT(slp != NULL); 621 KASSERT(nfsd->nfsd_slp == slp); 622 if (error || (slp->ns_flags & SLP_VALID) == 0) { 623 if (nd) { 624 nfsdreq_free(nd); 625 nd = NULL; 626 } 627 nfsd->nfsd_slp = NULL; 628 nfsrv_slpderef(slp); 629 continue; 630 } 631 sotype = slp->ns_so->so_type; 632 if (nd) { 633 getmicrotime(&nd->nd_starttime); 634 if (nd->nd_nam2) 635 nd->nd_nam = nd->nd_nam2; 636 else 637 nd->nd_nam = slp->ns_nam; 638 639 /* 640 * Check to see if authorization is needed. 641 */ 642 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 643 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 644 nsd->nsd_haddr = mtod(nd->nd_nam, 645 struct sockaddr_in *)->sin_addr.s_addr; 646 nsd->nsd_authlen = nfsd->nfsd_authlen; 647 nsd->nsd_verflen = nfsd->nfsd_verflen; 648 if (!copyout(nfsd->nfsd_authstr, 649 nsd->nsd_authstr, nfsd->nfsd_authlen) && 650 !copyout(nfsd->nfsd_verfstr, 651 nsd->nsd_verfstr, nfsd->nfsd_verflen) && 652 !copyout(nsd, argp, sizeof (*nsd))) { 653 uvm_lwp_rele(l); 654 return (ENEEDAUTH); 655 } 656 cacherep = RC_DROPIT; 657 } else 658 cacherep = nfsrv_getcache(nd, slp, &mreq); 659 660 if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 661 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 662 nd->nd_procnum = NFSPROC_NOOP; 663 nd->nd_repstat = 664 (NFSERR_AUTHERR | AUTH_TOOWEAK); 665 cacherep = RC_DOIT; 666 } 667 } 668 669 /* 670 * Loop to get all the write rpc relies that have been 671 * gathered together. 672 */ 673 do { 674 switch (cacherep) { 675 case RC_DOIT: 676 mreq = NULL; 677 netexport_rdlock(); 678 if (writes_todo || nd == NULL || 679 (!(nd->nd_flag & ND_NFSV3) && 680 nd->nd_procnum == NFSPROC_WRITE && 681 nfsrvw_procrastinate > 0)) 682 error = nfsrv_writegather(&nd, slp, 683 l, &mreq); 684 else 685 error = 686 (*(nfsrv3_procs[nd->nd_procnum])) 687 (nd, slp, l, &mreq); 688 netexport_rdunlock(); 689 if (mreq == NULL) { 690 if (nd != NULL) { 691 if (nd->nd_nam2) 692 m_free(nd->nd_nam2); 693 } 694 break; 695 } 696 if (error) { 697 nfsstats.srv_errs++; 698 nfsrv_updatecache(nd, false, mreq); 699 if (nd->nd_nam2) 700 m_freem(nd->nd_nam2); 701 break; 702 } 703 nfsstats.srvrpccnt[nd->nd_procnum]++; 704 nfsrv_updatecache(nd, true, mreq); 705 nd->nd_mrep = (struct mbuf *)0; 706 case RC_REPLY: 707 m = mreq; 708 siz = 0; 709 while (m) { 710 siz += m->m_len; 711 m = m->m_next; 712 } 713 if (siz <= 0 || siz > NFS_MAXPACKET) { 714 printf("mbuf siz=%d\n",siz); 715 panic("Bad nfs svc reply"); 716 } 717 m = mreq; 718 m->m_pkthdr.len = siz; 719 m->m_pkthdr.rcvif = (struct ifnet *)0; 720 /* 721 * For stream protocols, prepend a Sun RPC 722 * Record Mark. 723 */ 724 if (sotype == SOCK_STREAM) { 725 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 726 *mtod(m, u_int32_t *) = 727 htonl(0x80000000 | siz); 728 } 729 nd->nd_mreq = m; 730 if (nfsrtton) { 731 nfsd_rt(slp->ns_so->so_type, nd, 732 cacherep); 733 } 734 error = nfsdsock_sendreply(slp, nd); 735 nd = NULL; 736 if (error == EPIPE) 737 nfsrv_zapsock(slp); 738 if (error == EINTR || error == ERESTART) { 739 nfsd->nfsd_slp = NULL; 740 nfsrv_slpderef(slp); 741 goto done; 742 } 743 break; 744 case RC_DROPIT: 745 if (nfsrtton) 746 nfsd_rt(sotype, nd, cacherep); 747 m_freem(nd->nd_mrep); 748 m_freem(nd->nd_nam2); 749 break; 750 } 751 if (nd) { 752 nfsdreq_free(nd); 753 nd = NULL; 754 } 755 756 /* 757 * Check to see if there are outstanding writes that 758 * need to be serviced. 759 */ 760 getmicrotime(&tv); 761 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 762 (u_quad_t)tv.tv_usec; 763 mutex_enter(&nfsd_lock); 764 if (LIST_FIRST(&slp->ns_tq) && 765 LIST_FIRST(&slp->ns_tq)->nd_time <= cur_usec) { 766 cacherep = RC_DOIT; 767 writes_todo = 1; 768 } else 769 writes_todo = 0; 770 mutex_exit(&nfsd_lock); 771 } while (writes_todo); 772 if (nfsrv_dorec(slp, nfsd, &nd, &dummy)) { 773 nfsd->nfsd_slp = NULL; 774 nfsrv_slpderef(slp); 775 } 776 } 777 done: 778 mutex_enter(&nfsd_lock); 779 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 780 doreinit = --nfs_numnfsd == 0; 781 if (doreinit) 782 nfssvc_sockhead_flag |= SLP_INIT; 783 mutex_exit(&nfsd_lock); 784 cv_destroy(&nfsd->nfsd_cv); 785 kmem_free(nfsd, sizeof(*nfsd)); 786 nsd->nsd_nfsd = NULL; 787 if (doreinit) 788 nfsrv_init(true); /* Reinitialize everything */ 789 uvm_lwp_rele(l); 790 return (error); 791 } 792 793 /* 794 * Shut down a socket associated with an nfssvc_sock structure. 795 * Should be called with the send lock set, if required. 796 * The trick here is to increment the sref at the start, so that the nfsds 797 * will stop using it and clear ns_flag at the end so that it will not be 798 * reassigned during cleanup. 799 * 800 * called at splsoftnet. 801 */ 802 void 803 nfsrv_zapsock(slp) 804 struct nfssvc_sock *slp; 805 { 806 struct nfsuid *nuidp, *nnuidp; 807 struct nfsrv_descript *nwp; 808 struct socket *so; 809 struct mbuf *m; 810 811 if (nfsdsock_drain(slp)) { 812 return; 813 } 814 mutex_enter(&nfsd_lock); 815 if (slp->ns_gflags & SLP_G_DOREC) { 816 TAILQ_REMOVE(&nfssvc_sockpending, slp, ns_pending); 817 slp->ns_gflags &= ~SLP_G_DOREC; 818 } 819 mutex_exit(&nfsd_lock); 820 821 so = slp->ns_so; 822 KASSERT(so != NULL); 823 solock(so); 824 so->so_upcall = NULL; 825 so->so_upcallarg = NULL; 826 so->so_rcv.sb_flags &= ~SB_UPCALL; 827 soshutdown(so, SHUT_RDWR); 828 sounlock(so); 829 830 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 /* XXX what about freeing ns_frag ? */ 840 for (nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); nuidp != 0; 841 nuidp = nnuidp) { 842 nnuidp = TAILQ_NEXT(nuidp, nu_lru); 843 LIST_REMOVE(nuidp, nu_hash); 844 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 845 if (nuidp->nu_flag & NU_NAM) 846 m_freem(nuidp->nu_nam); 847 kmem_free(nuidp, sizeof(*nuidp)); 848 } 849 mutex_enter(&nfsd_lock); 850 while ((nwp = LIST_FIRST(&slp->ns_tq)) != NULL) { 851 LIST_REMOVE(nwp, nd_tq); 852 mutex_exit(&nfsd_lock); 853 nfsdreq_free(nwp); 854 mutex_enter(&nfsd_lock); 855 } 856 mutex_exit(&nfsd_lock); 857 } 858 859 /* 860 * Derefence a server socket structure. If it has no more references and 861 * is no longer valid, you can throw it away. 862 */ 863 void 864 nfsrv_slpderef(slp) 865 struct nfssvc_sock *slp; 866 { 867 uint32_t ref; 868 869 mutex_enter(&nfsd_lock); 870 KASSERT(slp->ns_sref > 0); 871 ref = --slp->ns_sref; 872 if (ref == 0 && (slp->ns_flags & SLP_VALID) == 0) { 873 file_t *fp; 874 875 KASSERT((slp->ns_gflags & SLP_G_DOREC) == 0); 876 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 877 mutex_exit(&nfsd_lock); 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 KASSERT(fp->f_count > 0); 885 closef(fp); 886 slp->ns_so = NULL; 887 } 888 889 if (slp->ns_nam) 890 m_free(slp->ns_nam); 891 nfsrv_sockfree(slp); 892 } else 893 mutex_exit(&nfsd_lock); 894 } 895 896 /* 897 * Initialize the data structures for the server. 898 * Handshake with any new nfsds starting up to avoid any chance of 899 * corruption. 900 */ 901 void 902 nfsrv_init(terminating) 903 int terminating; 904 { 905 struct nfssvc_sock *slp; 906 907 if (!terminating) { 908 mutex_init(&nfsd_lock, MUTEX_DRIVER, IPL_SOFTNET); 909 cv_init(&nfsd_initcv, "nfsdinit"); 910 } 911 912 mutex_enter(&nfsd_lock); 913 if (!terminating && (nfssvc_sockhead_flag & SLP_INIT) != 0) 914 panic("nfsd init"); 915 nfssvc_sockhead_flag |= SLP_INIT; 916 917 if (terminating) { 918 KASSERT(SLIST_EMPTY(&nfsd_idle_head)); 919 KASSERT(TAILQ_EMPTY(&nfsd_head)); 920 while ((slp = TAILQ_FIRST(&nfssvc_sockhead)) != NULL) { 921 mutex_exit(&nfsd_lock); 922 KASSERT(slp->ns_sref == 0); 923 slp->ns_sref++; 924 nfsrv_zapsock(slp); 925 nfsrv_slpderef(slp); 926 mutex_enter(&nfsd_lock); 927 } 928 KASSERT(TAILQ_EMPTY(&nfssvc_sockpending)); 929 mutex_exit(&nfsd_lock); 930 nfsrv_cleancache(); /* And clear out server cache */ 931 } else { 932 mutex_exit(&nfsd_lock); 933 nfs_pub.np_valid = 0; 934 } 935 936 TAILQ_INIT(&nfssvc_sockhead); 937 TAILQ_INIT(&nfssvc_sockpending); 938 939 TAILQ_INIT(&nfsd_head); 940 SLIST_INIT(&nfsd_idle_head); 941 nfsd_head_flag &= ~NFSD_CHECKSLP; 942 943 nfs_udpsock = nfsrv_sockalloc(); 944 945 #ifdef INET6 946 nfs_udp6sock = nfsrv_sockalloc(); 947 #endif 948 949 #ifdef ISO 950 nfs_cltpsock = nfsrv_sockalloc(); 951 #endif 952 953 mutex_enter(&nfsd_lock); 954 nfssvc_sockhead_flag &= ~SLP_INIT; 955 cv_broadcast(&nfsd_initcv); 956 mutex_exit(&nfsd_lock); 957 } 958 959 /* 960 * Add entries to the server monitor log. 961 */ 962 static void 963 nfsd_rt(sotype, nd, cacherep) 964 int sotype; 965 struct nfsrv_descript *nd; 966 int cacherep; 967 { 968 struct timeval tv; 969 struct drt *rt; 970 971 rt = &nfsdrt.drt[nfsdrt.pos]; 972 if (cacherep == RC_DOIT) 973 rt->flag = 0; 974 else if (cacherep == RC_REPLY) 975 rt->flag = DRT_CACHEREPLY; 976 else 977 rt->flag = DRT_CACHEDROP; 978 if (sotype == SOCK_STREAM) 979 rt->flag |= DRT_TCP; 980 if (nd->nd_flag & ND_NFSV3) 981 rt->flag |= DRT_NFSV3; 982 rt->proc = nd->nd_procnum; 983 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 984 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 985 else 986 rt->ipadr = INADDR_ANY; 987 getmicrotime(&tv); 988 rt->resptime = ((tv.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 989 (tv.tv_usec - nd->nd_starttime.tv_usec); 990 rt->tstamp = tv; 991 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 992 } 993 #endif /* NFSSERVER */ 994 995 #ifdef NFS 996 997 int nfs_defect = 0; 998 /* 999 * Asynchronous I/O threads for client nfs. 1000 * They do read-ahead and write-behind operations on the block I/O cache. 1001 * Never returns unless it fails or gets killed. 1002 */ 1003 1004 static void 1005 nfssvc_iod(void *arg) 1006 { 1007 struct buf *bp; 1008 struct nfs_iod *myiod; 1009 struct nfsmount *nmp; 1010 1011 myiod = kmem_alloc(sizeof(*myiod), KM_SLEEP); 1012 mutex_init(&myiod->nid_lock, MUTEX_DEFAULT, IPL_NONE); 1013 cv_init(&myiod->nid_cv, "nfsiod"); 1014 myiod->nid_exiting = false; 1015 myiod->nid_mount = NULL; 1016 mutex_enter(&nfs_iodlist_lock); 1017 LIST_INSERT_HEAD(&nfs_iodlist_all, myiod, nid_all); 1018 mutex_exit(&nfs_iodlist_lock); 1019 1020 for (;;) { 1021 mutex_enter(&nfs_iodlist_lock); 1022 LIST_INSERT_HEAD(&nfs_iodlist_idle, myiod, nid_idle); 1023 mutex_exit(&nfs_iodlist_lock); 1024 1025 mutex_enter(&myiod->nid_lock); 1026 while (/*CONSTCOND*/ true) { 1027 nmp = myiod->nid_mount; 1028 if (nmp) { 1029 myiod->nid_mount = NULL; 1030 break; 1031 } 1032 if (__predict_false(myiod->nid_exiting)) { 1033 /* 1034 * drop nid_lock to preserve locking order. 1035 */ 1036 mutex_exit(&myiod->nid_lock); 1037 mutex_enter(&nfs_iodlist_lock); 1038 mutex_enter(&myiod->nid_lock); 1039 /* 1040 * recheck nid_mount because nfs_asyncio can 1041 * pick us in the meantime as we are still on 1042 * nfs_iodlist_lock. 1043 */ 1044 if (myiod->nid_mount != NULL) { 1045 mutex_exit(&nfs_iodlist_lock); 1046 continue; 1047 } 1048 LIST_REMOVE(myiod, nid_idle); 1049 mutex_exit(&nfs_iodlist_lock); 1050 goto quit; 1051 } 1052 cv_wait(&myiod->nid_cv, &myiod->nid_lock); 1053 } 1054 mutex_exit(&myiod->nid_lock); 1055 1056 mutex_enter(&nmp->nm_lock); 1057 while ((bp = TAILQ_FIRST(&nmp->nm_bufq)) != NULL) { 1058 /* Take one off the front of the list */ 1059 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 1060 nmp->nm_bufqlen--; 1061 if (nmp->nm_bufqlen < 2 * nmp->nm_bufqiods) { 1062 cv_broadcast(&nmp->nm_aiocv); 1063 } 1064 mutex_exit(&nmp->nm_lock); 1065 KERNEL_LOCK(1, curlwp); 1066 (void)nfs_doio(bp); 1067 KERNEL_UNLOCK_LAST(curlwp); 1068 mutex_enter(&nmp->nm_lock); 1069 /* 1070 * If there are more than one iod on this mount, 1071 * then defect so that the iods can be shared out 1072 * fairly between the mounts 1073 */ 1074 if (nfs_defect && nmp->nm_bufqiods > 1) { 1075 break; 1076 } 1077 } 1078 KASSERT(nmp->nm_bufqiods > 0); 1079 nmp->nm_bufqiods--; 1080 mutex_exit(&nmp->nm_lock); 1081 } 1082 quit: 1083 KASSERT(myiod->nid_mount == NULL); 1084 mutex_exit(&myiod->nid_lock); 1085 1086 cv_destroy(&myiod->nid_cv); 1087 mutex_destroy(&myiod->nid_lock); 1088 kmem_free(myiod, sizeof(*myiod)); 1089 1090 kthread_exit(0); 1091 } 1092 1093 void 1094 nfs_iodinit() 1095 { 1096 1097 mutex_init(&nfs_iodlist_lock, MUTEX_DEFAULT, IPL_NONE); 1098 LIST_INIT(&nfs_iodlist_all); 1099 LIST_INIT(&nfs_iodlist_idle); 1100 } 1101 1102 int 1103 nfs_set_niothreads(int newval) 1104 { 1105 struct nfs_iod *nid; 1106 int error = 0; 1107 int hold_count; 1108 1109 KERNEL_UNLOCK_ALL(curlwp, &hold_count); 1110 1111 mutex_enter(&nfs_iodlist_lock); 1112 /* clamp to sane range */ 1113 nfs_niothreads = max(0, min(newval, NFS_MAXASYNCDAEMON)); 1114 1115 while (nfs_numasync != nfs_niothreads && error == 0) { 1116 while (nfs_numasync < nfs_niothreads) { 1117 1118 /* 1119 * kthread_create can wait for pagedaemon and 1120 * pagedaemon can wait for nfsiod which needs to acquire 1121 * nfs_iodlist_lock. 1122 */ 1123 1124 mutex_exit(&nfs_iodlist_lock); 1125 error = kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, 1126 nfssvc_iod, NULL, NULL, "nfsio"); 1127 mutex_enter(&nfs_iodlist_lock); 1128 if (error) { 1129 /* give up */ 1130 nfs_niothreads = nfs_numasync; 1131 break; 1132 } 1133 nfs_numasync++; 1134 } 1135 while (nfs_numasync > nfs_niothreads) { 1136 nid = LIST_FIRST(&nfs_iodlist_all); 1137 if (nid == NULL) { 1138 /* iod has not started yet. */ 1139 kpause("nfsiorm", false, hz, &nfs_iodlist_lock); 1140 continue; 1141 } 1142 LIST_REMOVE(nid, nid_all); 1143 mutex_enter(&nid->nid_lock); 1144 KASSERT(!nid->nid_exiting); 1145 nid->nid_exiting = true; 1146 cv_signal(&nid->nid_cv); 1147 mutex_exit(&nid->nid_lock); 1148 nfs_numasync--; 1149 } 1150 } 1151 mutex_exit(&nfs_iodlist_lock); 1152 1153 KERNEL_LOCK(hold_count, curlwp); 1154 return error; 1155 } 1156 1157 /* 1158 * Get an authorization string for the uid by having the mount_nfs sitting 1159 * on this mount point porpous out of the kernel and do it. 1160 */ 1161 int 1162 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1163 struct nfsmount *nmp; 1164 struct nfsreq *rep; 1165 kauth_cred_t cred; 1166 char **auth_str; 1167 int *auth_len; 1168 char *verf_str; 1169 int *verf_len; 1170 NFSKERBKEY_T key; /* return session key */ 1171 { 1172 int error = 0; 1173 1174 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1175 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1176 (void) tsleep((void *)&nmp->nm_authtype, PSOCK, 1177 "nfsauth1", 2 * hz); 1178 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1179 if (error) { 1180 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1181 return (error); 1182 } 1183 } 1184 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1185 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1186 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1187 nmp->nm_verfstr = verf_str; 1188 nmp->nm_verflen = *verf_len; 1189 nmp->nm_authuid = kauth_cred_geteuid(cred); 1190 wakeup((void *)&nmp->nm_authstr); 1191 1192 /* 1193 * And wait for mount_nfs to do its stuff. 1194 */ 1195 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1196 (void) tsleep((void *)&nmp->nm_authlen, PSOCK, 1197 "nfsauth2", 2 * hz); 1198 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1199 } 1200 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1201 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1202 error = EAUTH; 1203 } 1204 if (error) 1205 free((void *)*auth_str, M_TEMP); 1206 else { 1207 *auth_len = nmp->nm_authlen; 1208 *verf_len = nmp->nm_verflen; 1209 memcpy(key, nmp->nm_key, sizeof (NFSKERBKEY_T)); 1210 } 1211 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1212 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1213 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1214 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1215 wakeup((void *)&nmp->nm_authtype); 1216 } 1217 return (error); 1218 } 1219 1220 /* 1221 * Get a nickname authenticator and verifier. 1222 */ 1223 int 1224 nfs_getnickauth(struct nfsmount *nmp, kauth_cred_t cred, char **auth_str, 1225 int *auth_len, char *verf_str, int verf_len) 1226 { 1227 struct timeval ktvin, ktvout, tv; 1228 struct nfsuid *nuidp; 1229 u_int32_t *nickp, *verfp; 1230 1231 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1232 1233 #ifdef DIAGNOSTIC 1234 if (verf_len < (4 * NFSX_UNSIGNED)) 1235 panic("nfs_getnickauth verf too small"); 1236 #endif 1237 LIST_FOREACH(nuidp, NMUIDHASH(nmp, kauth_cred_geteuid(cred)), nu_hash) { 1238 if (kauth_cred_geteuid(nuidp->nu_cr) == kauth_cred_geteuid(cred)) 1239 break; 1240 } 1241 if (!nuidp || nuidp->nu_expire < time_second) 1242 return (EACCES); 1243 1244 /* 1245 * Move to the end of the lru list (end of lru == most recently used). 1246 */ 1247 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1248 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1249 1250 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1251 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1252 *nickp = txdr_unsigned(nuidp->nu_nickname); 1253 *auth_str = (char *)nickp; 1254 *auth_len = 2 * NFSX_UNSIGNED; 1255 1256 /* 1257 * Now we must encrypt the verifier and package it up. 1258 */ 1259 verfp = (u_int32_t *)verf_str; 1260 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1261 getmicrotime(&tv); 1262 if (tv.tv_sec > nuidp->nu_timestamp.tv_sec || 1263 (tv.tv_sec == nuidp->nu_timestamp.tv_sec && 1264 tv.tv_usec > nuidp->nu_timestamp.tv_usec)) 1265 nuidp->nu_timestamp = tv; 1266 else 1267 nuidp->nu_timestamp.tv_usec++; 1268 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1269 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1270 1271 /* 1272 * Now encrypt the timestamp verifier in ecb mode using the session 1273 * key. 1274 */ 1275 #ifdef NFSKERB 1276 XXX 1277 #endif 1278 1279 *verfp++ = ktvout.tv_sec; 1280 *verfp++ = ktvout.tv_usec; 1281 *verfp = 0; 1282 return (0); 1283 } 1284 1285 /* 1286 * Save the current nickname in a hash list entry on the mount point. 1287 */ 1288 int 1289 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1290 struct nfsmount *nmp; 1291 kauth_cred_t cred; 1292 int len; 1293 NFSKERBKEY_T key; 1294 struct mbuf **mdp; 1295 char **dposp; 1296 struct mbuf *mrep; 1297 { 1298 struct nfsuid *nuidp; 1299 u_int32_t *tl; 1300 int32_t t1; 1301 struct mbuf *md = *mdp; 1302 struct timeval ktvin, ktvout; 1303 u_int32_t nick; 1304 char *dpos = *dposp, *cp2; 1305 int deltasec, error = 0; 1306 1307 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1308 1309 if (len == (3 * NFSX_UNSIGNED)) { 1310 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1311 ktvin.tv_sec = *tl++; 1312 ktvin.tv_usec = *tl++; 1313 nick = fxdr_unsigned(u_int32_t, *tl); 1314 1315 /* 1316 * Decrypt the timestamp in ecb mode. 1317 */ 1318 #ifdef NFSKERB 1319 XXX 1320 #endif 1321 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1322 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1323 deltasec = time_second - ktvout.tv_sec; 1324 if (deltasec < 0) 1325 deltasec = -deltasec; 1326 /* 1327 * If ok, add it to the hash list for the mount point. 1328 */ 1329 if (deltasec <= NFS_KERBCLOCKSKEW) { 1330 if (nmp->nm_numuids < nuidhash_max) { 1331 nmp->nm_numuids++; 1332 nuidp = kmem_alloc(sizeof(*nuidp), KM_SLEEP); 1333 } else { 1334 nuidp = TAILQ_FIRST(&nmp->nm_uidlruhead); 1335 LIST_REMOVE(nuidp, nu_hash); 1336 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1337 nu_lru); 1338 } 1339 nuidp->nu_flag = 0; 1340 kauth_cred_seteuid(nuidp->nu_cr, kauth_cred_geteuid(cred)); 1341 nuidp->nu_expire = time_second + NFS_KERBTTL; 1342 nuidp->nu_timestamp = ktvout; 1343 nuidp->nu_nickname = nick; 1344 memcpy(nuidp->nu_key, key, sizeof (NFSKERBKEY_T)); 1345 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1346 nu_lru); 1347 LIST_INSERT_HEAD(NMUIDHASH(nmp, kauth_cred_geteuid(cred)), 1348 nuidp, nu_hash); 1349 } 1350 } else 1351 nfsm_adv(nfsm_rndup(len)); 1352 nfsmout: 1353 *mdp = md; 1354 *dposp = dpos; 1355 return (error); 1356 } 1357 #endif /* NFS */
Cache object: a9ade23b0b268ab7e224d73a09e72986
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