nfs_syscalls.c revision 1.139
1 /* $NetBSD: nfs_syscalls.c,v 1.139 2008/09/28 00:10:18 pooka 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 1.139 2008/09/28 00:10:18 pooka 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 case AF_ISO: 322 default: 323 nuidp->nu_flag |= NU_NAM; 324 nuidp->nu_nam = m_copym( 325 nfsd->nfsd_nd->nd_nam2, 0, 326 M_COPYALL, M_WAIT); 327 break; 328 }; 329 } 330 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 331 nu_lru); 332 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 333 nuidp, nu_hash); 334 kauth_cred_hold(nuidp->nu_cr); 335 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 336 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 337 } 338 } 339 } 340 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 341 (nfsd = nsd->nsd_nfsd)) 342 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 343 error = nfssvc_nfsd(nsd, SCARG(uap, argp), l); 344 #endif /* !NFSSERVER */ 345 } 346 if (error == EINTR || error == ERESTART) 347 error = 0; 348 return (error); 349 } 350 351 #ifdef NFSSERVER 352 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure"); 353 354 static struct nfssvc_sock * 355 nfsrv_sockalloc() 356 { 357 struct nfssvc_sock *slp; 358 359 slp = kmem_alloc(sizeof(*slp), KM_SLEEP); 360 memset(slp, 0, sizeof (struct nfssvc_sock)); 361 mutex_init(&slp->ns_lock, MUTEX_DRIVER, IPL_SOFTNET); 362 mutex_init(&slp->ns_alock, MUTEX_DRIVER, IPL_SOFTNET); 363 cv_init(&slp->ns_cv, "nfsdsock"); 364 TAILQ_INIT(&slp->ns_uidlruhead); 365 LIST_INIT(&slp->ns_tq); 366 SIMPLEQ_INIT(&slp->ns_sendq); 367 mutex_enter(&nfsd_lock); 368 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 369 mutex_exit(&nfsd_lock); 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_flags & SLP_VALID) == 0); 381 mutex_destroy(&slp->ns_lock); 382 mutex_destroy(&slp->ns_alock); 383 cv_destroy(&slp->ns_cv); 384 kmem_free(slp, sizeof(*slp)); 385 } 386 387 /* 388 * Adds a socket to the list for servicing by nfsds. 389 */ 390 int 391 nfssvc_addsock(fp, mynam) 392 file_t *fp; 393 struct mbuf *mynam; 394 { 395 int siz; 396 struct nfssvc_sock *slp; 397 struct socket *so; 398 struct nfssvc_sock *tslp; 399 int error; 400 int val; 401 402 so = (struct socket *)fp->f_data; 403 tslp = (struct nfssvc_sock *)0; 404 /* 405 * Add it to the list, as required. 406 */ 407 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 408 #ifdef INET6 409 if (so->so_proto->pr_domain->dom_family == AF_INET6) 410 tslp = nfs_udp6sock; 411 else 412 #endif 413 tslp = nfs_udpsock; 414 if (tslp->ns_flags & SLP_VALID) { 415 m_freem(mynam); 416 return (EPERM); 417 } 418 #ifdef ISO 419 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 420 tslp = nfs_cltpsock; 421 if (tslp->ns_flags & SLP_VALID) { 422 m_freem(mynam); 423 return (EPERM); 424 } 425 #endif /* ISO */ 426 } 427 if (so->so_type == SOCK_STREAM) 428 siz = NFS_MAXPACKET + sizeof (u_long); 429 else 430 siz = NFS_MAXPACKET; 431 solock(so); 432 error = soreserve(so, siz, siz); 433 sounlock(so); 434 if (error) { 435 m_freem(mynam); 436 return (error); 437 } 438 439 /* 440 * Set protocol specific options { for now TCP only } and 441 * reserve some space. For datagram sockets, this can get called 442 * repeatedly for the same socket, but that isn't harmful. 443 */ 444 if (so->so_type == SOCK_STREAM) { 445 val = 1; 446 so_setsockopt(NULL, so, SOL_SOCKET, SO_KEEPALIVE, &val, 447 sizeof(val)); 448 } 449 if ((so->so_proto->pr_domain->dom_family == AF_INET 450 #ifdef INET6 451 || so->so_proto->pr_domain->dom_family == AF_INET6 452 #endif 453 ) && 454 so->so_proto->pr_protocol == IPPROTO_TCP) { 455 val = 1; 456 so_setsockopt(NULL, so, IPPROTO_TCP, TCP_NODELAY, &val, 457 sizeof(val)); 458 } 459 solock(so); 460 so->so_rcv.sb_flags &= ~SB_NOINTR; 461 so->so_rcv.sb_timeo = 0; 462 so->so_snd.sb_flags &= ~SB_NOINTR; 463 so->so_snd.sb_timeo = 0; 464 sounlock(so); 465 if (tslp) { 466 slp = tslp; 467 } else { 468 slp = nfsrv_sockalloc(); 469 } 470 slp->ns_so = so; 471 slp->ns_nam = mynam; 472 mutex_enter(&fp->f_lock); 473 fp->f_count++; 474 mutex_exit(&fp->f_lock); 475 slp->ns_fp = fp; 476 slp->ns_flags = SLP_VALID; 477 slp->ns_aflags = SLP_A_NEEDQ; 478 slp->ns_gflags = 0; 479 slp->ns_sflags = 0; 480 solock(so); 481 so->so_upcallarg = (void *)slp; 482 so->so_upcall = nfsrv_soupcall; 483 so->so_rcv.sb_flags |= SB_UPCALL; 484 sounlock(so); 485 nfsrv_wakenfsd(slp); 486 return (0); 487 } 488 489 /* 490 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 491 * until it is killed by a signal. 492 */ 493 int 494 nfssvc_nfsd(nsd, argp, l) 495 struct nfsd_srvargs *nsd; 496 void *argp; 497 struct lwp *l; 498 { 499 struct timeval tv; 500 struct mbuf *m; 501 struct nfssvc_sock *slp; 502 struct nfsd *nfsd = nsd->nsd_nfsd; 503 struct nfsrv_descript *nd = NULL; 504 struct mbuf *mreq; 505 u_quad_t cur_usec; 506 int error = 0, cacherep, siz, sotype, writes_todo; 507 struct proc *p = l->l_proc; 508 int s; 509 bool doreinit; 510 511 #ifndef nolint 512 cacherep = RC_DOIT; 513 writes_todo = 0; 514 #endif 515 uvm_lwp_hold(l); 516 if (nfsd == NULL) { 517 nsd->nsd_nfsd = nfsd = kmem_alloc(sizeof(*nfsd), KM_SLEEP); 518 memset(nfsd, 0, sizeof (struct nfsd)); 519 cv_init(&nfsd->nfsd_cv, "nfsd"); 520 nfsd->nfsd_procp = p; 521 mutex_enter(&nfsd_lock); 522 while ((nfssvc_sockhead_flag & SLP_INIT) != 0) { 523 KASSERT(nfs_numnfsd == 0); 524 cv_wait(&nfsd_initcv, &nfsd_lock); 525 } 526 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 527 nfs_numnfsd++; 528 mutex_exit(&nfsd_lock); 529 } 530 /* 531 * Loop getting rpc requests until SIGKILL. 532 */ 533 for (;;) { 534 bool dummy; 535 536 if ((curcpu()->ci_schedstate.spc_flags & SPCF_SHOULDYIELD) 537 != 0) { 538 preempt(); 539 } 540 if (nfsd->nfsd_slp == NULL) { 541 mutex_enter(&nfsd_lock); 542 while (nfsd->nfsd_slp == NULL && 543 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 544 SLIST_INSERT_HEAD(&nfsd_idle_head, nfsd, 545 nfsd_idle); 546 error = cv_wait_sig(&nfsd->nfsd_cv, &nfsd_lock); 547 if (error) { 548 slp = nfsd->nfsd_slp; 549 nfsd->nfsd_slp = NULL; 550 if (!slp) 551 SLIST_REMOVE(&nfsd_idle_head, 552 nfsd, nfsd, nfsd_idle); 553 mutex_exit(&nfsd_lock); 554 if (slp) { 555 nfsrv_wakenfsd(slp); 556 nfsrv_slpderef(slp); 557 } 558 goto done; 559 } 560 } 561 if (nfsd->nfsd_slp == NULL && 562 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 563 slp = TAILQ_FIRST(&nfssvc_sockpending); 564 if (slp) { 565 KASSERT((slp->ns_gflags & SLP_G_DOREC) 566 != 0); 567 TAILQ_REMOVE(&nfssvc_sockpending, slp, 568 ns_pending); 569 slp->ns_gflags &= ~SLP_G_DOREC; 570 slp->ns_sref++; 571 nfsd->nfsd_slp = slp; 572 } else 573 nfsd_head_flag &= ~NFSD_CHECKSLP; 574 } 575 KASSERT(nfsd->nfsd_slp == NULL || 576 nfsd->nfsd_slp->ns_sref > 0); 577 mutex_exit(&nfsd_lock); 578 if ((slp = nfsd->nfsd_slp) == NULL) 579 continue; 580 if (slp->ns_flags & SLP_VALID) { 581 bool more; 582 583 if (nfsdsock_testbits(slp, SLP_A_NEEDQ)) { 584 nfsrv_rcv(slp); 585 } 586 if (nfsdsock_testbits(slp, SLP_A_DISCONN)) { 587 nfsrv_zapsock(slp); 588 } 589 error = nfsrv_dorec(slp, nfsd, &nd, &more); 590 getmicrotime(&tv); 591 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 592 (u_quad_t)tv.tv_usec; 593 writes_todo = 0; 594 if (error) { 595 struct nfsrv_descript *nd2; 596 597 mutex_enter(&nfsd_lock); 598 nd2 = LIST_FIRST(&slp->ns_tq); 599 if (nd2 != NULL && 600 nd2->nd_time <= cur_usec) { 601 error = 0; 602 cacherep = RC_DOIT; 603 writes_todo = 1; 604 } 605 mutex_exit(&nfsd_lock); 606 } 607 if (error == 0 && more) { 608 nfsrv_wakenfsd(slp); 609 } 610 } 611 } else { 612 error = 0; 613 slp = nfsd->nfsd_slp; 614 } 615 KASSERT(slp != NULL); 616 KASSERT(nfsd->nfsd_slp == slp); 617 if (error || (slp->ns_flags & SLP_VALID) == 0) { 618 if (nd) { 619 nfsdreq_free(nd); 620 nd = NULL; 621 } 622 nfsd->nfsd_slp = NULL; 623 nfsrv_slpderef(slp); 624 continue; 625 } 626 sotype = slp->ns_so->so_type; 627 if (nd) { 628 getmicrotime(&nd->nd_starttime); 629 if (nd->nd_nam2) 630 nd->nd_nam = nd->nd_nam2; 631 else 632 nd->nd_nam = slp->ns_nam; 633 634 /* 635 * Check to see if authorization is needed. 636 */ 637 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 638 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 639 nsd->nsd_haddr = mtod(nd->nd_nam, 640 struct sockaddr_in *)->sin_addr.s_addr; 641 nsd->nsd_authlen = nfsd->nfsd_authlen; 642 nsd->nsd_verflen = nfsd->nfsd_verflen; 643 if (!copyout(nfsd->nfsd_authstr, 644 nsd->nsd_authstr, nfsd->nfsd_authlen) && 645 !copyout(nfsd->nfsd_verfstr, 646 nsd->nsd_verfstr, nfsd->nfsd_verflen) && 647 !copyout(nsd, argp, sizeof (*nsd))) { 648 uvm_lwp_rele(l); 649 return (ENEEDAUTH); 650 } 651 cacherep = RC_DROPIT; 652 } else 653 cacherep = nfsrv_getcache(nd, slp, &mreq); 654 655 if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 656 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 657 nd->nd_procnum = NFSPROC_NOOP; 658 nd->nd_repstat = 659 (NFSERR_AUTHERR | AUTH_TOOWEAK); 660 cacherep = RC_DOIT; 661 } 662 } 663 664 /* 665 * Loop to get all the write rpc relies that have been 666 * gathered together. 667 */ 668 do { 669 switch (cacherep) { 670 case RC_DOIT: 671 mreq = NULL; 672 netexport_rdlock(); 673 if (writes_todo || nd == NULL || 674 (!(nd->nd_flag & ND_NFSV3) && 675 nd->nd_procnum == NFSPROC_WRITE && 676 nfsrvw_procrastinate > 0)) 677 error = nfsrv_writegather(&nd, slp, 678 l, &mreq); 679 else 680 error = 681 (*(nfsrv3_procs[nd->nd_procnum])) 682 (nd, slp, l, &mreq); 683 netexport_rdunlock(); 684 if (mreq == NULL) { 685 if (nd != NULL) { 686 if (nd->nd_nam2) 687 m_free(nd->nd_nam2); 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; 805 806 if (nfsdsock_drain(slp)) { 807 return; 808 } 809 mutex_enter(&nfsd_lock); 810 if (slp->ns_gflags & SLP_G_DOREC) { 811 TAILQ_REMOVE(&nfssvc_sockpending, slp, ns_pending); 812 slp->ns_gflags &= ~SLP_G_DOREC; 813 } 814 mutex_exit(&nfsd_lock); 815 816 so = slp->ns_so; 817 KASSERT(so != NULL); 818 solock(so); 819 so->so_upcall = NULL; 820 so->so_upcallarg = NULL; 821 so->so_rcv.sb_flags &= ~SB_UPCALL; 822 soshutdown(so, SHUT_RDWR); 823 sounlock(so); 824 825 if (slp->ns_nam) 826 m_free(slp->ns_nam); 827 m_freem(slp->ns_raw); 828 m = slp->ns_rec; 829 while (m != NULL) { 830 struct mbuf *n; 831 832 n = m->m_nextpkt; 833 m_freem(m); 834 m = n; 835 } 836 for (nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); nuidp != 0; 837 nuidp = nnuidp) { 838 nnuidp = TAILQ_NEXT(nuidp, nu_lru); 839 LIST_REMOVE(nuidp, nu_hash); 840 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 841 if (nuidp->nu_flag & NU_NAM) 842 m_freem(nuidp->nu_nam); 843 kmem_free(nuidp, sizeof(*nuidp)); 844 } 845 mutex_enter(&nfsd_lock); 846 while ((nwp = LIST_FIRST(&slp->ns_tq)) != NULL) { 847 LIST_REMOVE(nwp, nd_tq); 848 mutex_exit(&nfsd_lock); 849 nfsdreq_free(nwp); 850 mutex_enter(&nfsd_lock); 851 } 852 mutex_exit(&nfsd_lock); 853 } 854 855 /* 856 * Derefence a server socket structure. If it has no more references and 857 * is no longer valid, you can throw it away. 858 */ 859 void 860 nfsrv_slpderef(slp) 861 struct nfssvc_sock *slp; 862 { 863 uint32_t ref; 864 865 mutex_enter(&nfsd_lock); 866 KASSERT(slp->ns_sref > 0); 867 ref = --slp->ns_sref; 868 mutex_exit(&nfsd_lock); 869 if (ref == 0 && (slp->ns_flags & SLP_VALID) == 0) { 870 file_t *fp; 871 872 mutex_enter(&nfsd_lock); 873 KASSERT((slp->ns_gflags & SLP_G_DOREC) == 0); 874 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 875 mutex_exit(&nfsd_lock); 876 877 fp = slp->ns_fp; 878 if (fp != NULL) { 879 slp->ns_fp = NULL; 880 KASSERT(fp != NULL); 881 KASSERT(fp->f_data == slp->ns_so); 882 KASSERT(fp->f_count > 0); 883 closef(fp); 884 slp->ns_so = NULL; 885 } 886 887 nfsrv_sockfree(slp); 888 } 889 } 890 891 /* 892 * Initialize the data structures for the server. 893 * Handshake with any new nfsds starting up to avoid any chance of 894 * corruption. 895 */ 896 void 897 nfsrv_init(terminating) 898 int terminating; 899 { 900 struct nfssvc_sock *slp; 901 902 if (!terminating) { 903 mutex_init(&nfsd_lock, MUTEX_DRIVER, IPL_SOFTNET); 904 cv_init(&nfsd_initcv, "nfsdinit"); 905 } 906 907 mutex_enter(&nfsd_lock); 908 if (!terminating && (nfssvc_sockhead_flag & SLP_INIT) != 0) 909 panic("nfsd init"); 910 nfssvc_sockhead_flag |= SLP_INIT; 911 912 if (terminating) { 913 KASSERT(SLIST_EMPTY(&nfsd_idle_head)); 914 KASSERT(TAILQ_EMPTY(&nfsd_head)); 915 while ((slp = TAILQ_FIRST(&nfssvc_sockhead)) != NULL) { 916 mutex_exit(&nfsd_lock); 917 KASSERT(slp->ns_sref == 0); 918 slp->ns_sref++; 919 nfsrv_zapsock(slp); 920 nfsrv_slpderef(slp); 921 mutex_enter(&nfsd_lock); 922 } 923 KASSERT(TAILQ_EMPTY(&nfssvc_sockpending)); 924 mutex_exit(&nfsd_lock); 925 nfsrv_cleancache(); /* And clear out server cache */ 926 } else { 927 mutex_exit(&nfsd_lock); 928 nfs_pub.np_valid = 0; 929 } 930 931 TAILQ_INIT(&nfssvc_sockhead); 932 TAILQ_INIT(&nfssvc_sockpending); 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 mutex_enter(&nfsd_lock); 949 nfssvc_sockhead_flag &= ~SLP_INIT; 950 cv_broadcast(&nfsd_initcv); 951 mutex_exit(&nfsd_lock); 952 } 953 954 /* 955 * Add entries to the server monitor log. 956 */ 957 static void 958 nfsd_rt(sotype, nd, cacherep) 959 int sotype; 960 struct nfsrv_descript *nd; 961 int cacherep; 962 { 963 struct timeval tv; 964 struct drt *rt; 965 966 rt = &nfsdrt.drt[nfsdrt.pos]; 967 if (cacherep == RC_DOIT) 968 rt->flag = 0; 969 else if (cacherep == RC_REPLY) 970 rt->flag = DRT_CACHEREPLY; 971 else 972 rt->flag = DRT_CACHEDROP; 973 if (sotype == SOCK_STREAM) 974 rt->flag |= DRT_TCP; 975 if (nd->nd_flag & ND_NFSV3) 976 rt->flag |= DRT_NFSV3; 977 rt->proc = nd->nd_procnum; 978 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 979 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 980 else 981 rt->ipadr = INADDR_ANY; 982 getmicrotime(&tv); 983 rt->resptime = ((tv.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 984 (tv.tv_usec - nd->nd_starttime.tv_usec); 985 rt->tstamp = tv; 986 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 987 } 988 #endif /* NFSSERVER */ 989 990 #ifdef NFS 991 992 int nfs_defect = 0; 993 /* 994 * Asynchronous I/O threads for client nfs. 995 * They do read-ahead and write-behind operations on the block I/O cache. 996 * Never returns unless it fails or gets killed. 997 */ 998 999 static void 1000 nfssvc_iod(void *arg) 1001 { 1002 struct buf *bp; 1003 struct nfs_iod *myiod; 1004 struct nfsmount *nmp; 1005 1006 myiod = kmem_alloc(sizeof(*myiod), KM_SLEEP); 1007 mutex_init(&myiod->nid_lock, MUTEX_DEFAULT, IPL_NONE); 1008 cv_init(&myiod->nid_cv, "nfsiod"); 1009 myiod->nid_exiting = false; 1010 myiod->nid_mount = NULL; 1011 mutex_enter(&nfs_iodlist_lock); 1012 LIST_INSERT_HEAD(&nfs_iodlist_all, myiod, nid_all); 1013 mutex_exit(&nfs_iodlist_lock); 1014 1015 for (;;) { 1016 mutex_enter(&nfs_iodlist_lock); 1017 LIST_INSERT_HEAD(&nfs_iodlist_idle, myiod, nid_idle); 1018 mutex_exit(&nfs_iodlist_lock); 1019 1020 mutex_enter(&myiod->nid_lock); 1021 while (/*CONSTCOND*/ true) { 1022 nmp = myiod->nid_mount; 1023 if (nmp) { 1024 myiod->nid_mount = NULL; 1025 break; 1026 } 1027 if (__predict_false(myiod->nid_exiting)) { 1028 /* 1029 * drop nid_lock to preserve locking order. 1030 */ 1031 mutex_exit(&myiod->nid_lock); 1032 mutex_enter(&nfs_iodlist_lock); 1033 mutex_enter(&myiod->nid_lock); 1034 /* 1035 * recheck nid_mount because nfs_asyncio can 1036 * pick us in the meantime as we are still on 1037 * nfs_iodlist_lock. 1038 */ 1039 if (myiod->nid_mount != NULL) { 1040 mutex_exit(&nfs_iodlist_lock); 1041 continue; 1042 } 1043 LIST_REMOVE(myiod, nid_idle); 1044 mutex_exit(&nfs_iodlist_lock); 1045 goto quit; 1046 } 1047 cv_wait(&myiod->nid_cv, &myiod->nid_lock); 1048 } 1049 mutex_exit(&myiod->nid_lock); 1050 1051 mutex_enter(&nmp->nm_lock); 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_bufqlen < 2 * nmp->nm_bufqiods) { 1057 cv_broadcast(&nmp->nm_aiocv); 1058 } 1059 mutex_exit(&nmp->nm_lock); 1060 KERNEL_LOCK(1, curlwp); 1061 (void)nfs_doio(bp); 1062 KERNEL_UNLOCK_LAST(curlwp); 1063 mutex_enter(&nmp->nm_lock); 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 break; 1071 } 1072 } 1073 KASSERT(nmp->nm_bufqiods > 0); 1074 nmp->nm_bufqiods--; 1075 mutex_exit(&nmp->nm_lock); 1076 } 1077 quit: 1078 KASSERT(myiod->nid_mount == NULL); 1079 mutex_exit(&myiod->nid_lock); 1080 1081 cv_destroy(&myiod->nid_cv); 1082 mutex_destroy(&myiod->nid_lock); 1083 kmem_free(myiod, sizeof(*myiod)); 1084 1085 kthread_exit(0); 1086 } 1087 1088 void 1089 nfs_iodinit() 1090 { 1091 1092 mutex_init(&nfs_iodlist_lock, MUTEX_DEFAULT, IPL_NONE); 1093 LIST_INIT(&nfs_iodlist_all); 1094 LIST_INIT(&nfs_iodlist_idle); 1095 } 1096 1097 int 1098 nfs_set_niothreads(int newval) 1099 { 1100 struct nfs_iod *nid; 1101 int error = 0; 1102 int hold_count; 1103 1104 KERNEL_UNLOCK_ALL(curlwp, &hold_count); 1105 1106 mutex_enter(&nfs_iodlist_lock); 1107 /* clamp to sane range */ 1108 nfs_niothreads = max(0, min(newval, NFS_MAXASYNCDAEMON)); 1109 1110 while (nfs_numasync != nfs_niothreads && error == 0) { 1111 while (nfs_numasync < nfs_niothreads) { 1112 1113 /* 1114 * kthread_create can wait for pagedaemon and 1115 * pagedaemon can wait for nfsiod which needs to acquire 1116 * nfs_iodlist_lock. 1117 */ 1118 1119 mutex_exit(&nfs_iodlist_lock); 1120 error = kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, 1121 nfssvc_iod, NULL, NULL, "nfsio"); 1122 mutex_enter(&nfs_iodlist_lock); 1123 if (error) { 1124 /* give up */ 1125 nfs_niothreads = nfs_numasync; 1126 break; 1127 } 1128 nfs_numasync++; 1129 } 1130 while (nfs_numasync > nfs_niothreads) { 1131 nid = LIST_FIRST(&nfs_iodlist_all); 1132 if (nid == NULL) { 1133 /* iod has not started yet. */ 1134 kpause("nfsiorm", false, hz, &nfs_iodlist_lock); 1135 continue; 1136 } 1137 LIST_REMOVE(nid, nid_all); 1138 mutex_enter(&nid->nid_lock); 1139 KASSERT(!nid->nid_exiting); 1140 nid->nid_exiting = true; 1141 cv_signal(&nid->nid_cv); 1142 mutex_exit(&nid->nid_lock); 1143 nfs_numasync--; 1144 } 1145 } 1146 mutex_exit(&nfs_iodlist_lock); 1147 1148 KERNEL_LOCK(hold_count, curlwp); 1149 return error; 1150 } 1151 1152 /* 1153 * Get an authorization string for the uid by having the mount_nfs sitting 1154 * on this mount point porpous out of the kernel and do it. 1155 */ 1156 int 1157 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1158 struct nfsmount *nmp; 1159 struct nfsreq *rep; 1160 kauth_cred_t cred; 1161 char **auth_str; 1162 int *auth_len; 1163 char *verf_str; 1164 int *verf_len; 1165 NFSKERBKEY_T key; /* return session key */ 1166 { 1167 int error = 0; 1168 1169 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1170 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1171 (void) tsleep((void *)&nmp->nm_authtype, PSOCK, 1172 "nfsauth1", 2 * hz); 1173 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1174 if (error) { 1175 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1176 return (error); 1177 } 1178 } 1179 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1180 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1181 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1182 nmp->nm_verfstr = verf_str; 1183 nmp->nm_verflen = *verf_len; 1184 nmp->nm_authuid = kauth_cred_geteuid(cred); 1185 wakeup((void *)&nmp->nm_authstr); 1186 1187 /* 1188 * And wait for mount_nfs to do its stuff. 1189 */ 1190 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1191 (void) tsleep((void *)&nmp->nm_authlen, PSOCK, 1192 "nfsauth2", 2 * hz); 1193 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1194 } 1195 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1196 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1197 error = EAUTH; 1198 } 1199 if (error) 1200 free((void *)*auth_str, M_TEMP); 1201 else { 1202 *auth_len = nmp->nm_authlen; 1203 *verf_len = nmp->nm_verflen; 1204 memcpy(key, nmp->nm_key, sizeof (NFSKERBKEY_T)); 1205 } 1206 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1207 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1208 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1209 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1210 wakeup((void *)&nmp->nm_authtype); 1211 } 1212 return (error); 1213 } 1214 1215 /* 1216 * Get a nickname authenticator and verifier. 1217 */ 1218 int 1219 nfs_getnickauth(struct nfsmount *nmp, kauth_cred_t cred, char **auth_str, 1220 int *auth_len, char *verf_str, int verf_len) 1221 { 1222 struct timeval ktvin, ktvout, tv; 1223 struct nfsuid *nuidp; 1224 u_int32_t *nickp, *verfp; 1225 1226 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1227 1228 #ifdef DIAGNOSTIC 1229 if (verf_len < (4 * NFSX_UNSIGNED)) 1230 panic("nfs_getnickauth verf too small"); 1231 #endif 1232 LIST_FOREACH(nuidp, NMUIDHASH(nmp, kauth_cred_geteuid(cred)), nu_hash) { 1233 if (kauth_cred_geteuid(nuidp->nu_cr) == kauth_cred_geteuid(cred)) 1234 break; 1235 } 1236 if (!nuidp || nuidp->nu_expire < time_second) 1237 return (EACCES); 1238 1239 /* 1240 * Move to the end of the lru list (end of lru == most recently used). 1241 */ 1242 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1243 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1244 1245 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1246 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1247 *nickp = txdr_unsigned(nuidp->nu_nickname); 1248 *auth_str = (char *)nickp; 1249 *auth_len = 2 * NFSX_UNSIGNED; 1250 1251 /* 1252 * Now we must encrypt the verifier and package it up. 1253 */ 1254 verfp = (u_int32_t *)verf_str; 1255 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1256 getmicrotime(&tv); 1257 if (tv.tv_sec > nuidp->nu_timestamp.tv_sec || 1258 (tv.tv_sec == nuidp->nu_timestamp.tv_sec && 1259 tv.tv_usec > nuidp->nu_timestamp.tv_usec)) 1260 nuidp->nu_timestamp = tv; 1261 else 1262 nuidp->nu_timestamp.tv_usec++; 1263 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1264 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1265 1266 /* 1267 * Now encrypt the timestamp verifier in ecb mode using the session 1268 * key. 1269 */ 1270 #ifdef NFSKERB 1271 XXX 1272 #endif 1273 1274 *verfp++ = ktvout.tv_sec; 1275 *verfp++ = ktvout.tv_usec; 1276 *verfp = 0; 1277 return (0); 1278 } 1279 1280 /* 1281 * Save the current nickname in a hash list entry on the mount point. 1282 */ 1283 int 1284 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1285 struct nfsmount *nmp; 1286 kauth_cred_t cred; 1287 int len; 1288 NFSKERBKEY_T key; 1289 struct mbuf **mdp; 1290 char **dposp; 1291 struct mbuf *mrep; 1292 { 1293 struct nfsuid *nuidp; 1294 u_int32_t *tl; 1295 int32_t t1; 1296 struct mbuf *md = *mdp; 1297 struct timeval ktvin, ktvout; 1298 u_int32_t nick; 1299 char *dpos = *dposp, *cp2; 1300 int deltasec, error = 0; 1301 1302 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1303 1304 if (len == (3 * NFSX_UNSIGNED)) { 1305 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1306 ktvin.tv_sec = *tl++; 1307 ktvin.tv_usec = *tl++; 1308 nick = fxdr_unsigned(u_int32_t, *tl); 1309 1310 /* 1311 * Decrypt the timestamp in ecb mode. 1312 */ 1313 #ifdef NFSKERB 1314 XXX 1315 #endif 1316 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1317 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1318 deltasec = time_second - ktvout.tv_sec; 1319 if (deltasec < 0) 1320 deltasec = -deltasec; 1321 /* 1322 * If ok, add it to the hash list for the mount point. 1323 */ 1324 if (deltasec <= NFS_KERBCLOCKSKEW) { 1325 if (nmp->nm_numuids < nuidhash_max) { 1326 nmp->nm_numuids++; 1327 nuidp = kmem_alloc(sizeof(*nuidp), KM_SLEEP); 1328 } else { 1329 nuidp = TAILQ_FIRST(&nmp->nm_uidlruhead); 1330 LIST_REMOVE(nuidp, nu_hash); 1331 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1332 nu_lru); 1333 } 1334 nuidp->nu_flag = 0; 1335 kauth_cred_seteuid(nuidp->nu_cr, kauth_cred_geteuid(cred)); 1336 nuidp->nu_expire = time_second + NFS_KERBTTL; 1337 nuidp->nu_timestamp = ktvout; 1338 nuidp->nu_nickname = nick; 1339 memcpy(nuidp->nu_key, key, sizeof (NFSKERBKEY_T)); 1340 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1341 nu_lru); 1342 LIST_INSERT_HEAD(NMUIDHASH(nmp, kauth_cred_geteuid(cred)), 1343 nuidp, nu_hash); 1344 } 1345 } else 1346 nfsm_adv(nfsm_rndup(len)); 1347 nfsmout: 1348 *mdp = md; 1349 *dposp = dpos; 1350 return (error); 1351 } 1352 #endif /* NFS */ 1353
Indexes created Mon Oct 20 20:10:13 GMT 2025