nfs_syscalls.c revision 1.122.2.1
1 /* $NetBSD: nfs_syscalls.c,v 1.122.2.1 2007/08/09 02:37:27 jmcneill 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 1.122.2.1 2007/08/09 02:37:27 jmcneill Exp $"); 39 40 #include "fs_nfs.h" 41 #include "opt_nfs.h" 42 #include "opt_nfsserver.h" 43 #include "opt_iso.h" 44 #include "opt_inet.h" 45 #include "opt_compat_netbsd.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/file.h> 51 #include <sys/stat.h> 52 #include <sys/vnode.h> 53 #include <sys/mount.h> 54 #include <sys/proc.h> 55 #include <sys/uio.h> 56 #include <sys/malloc.h> 57 #include <sys/buf.h> 58 #include <sys/mbuf.h> 59 #include <sys/socket.h> 60 #include <sys/socketvar.h> 61 #include <sys/signalvar.h> 62 #include <sys/domain.h> 63 #include <sys/protosw.h> 64 #include <sys/namei.h> 65 #include <sys/syslog.h> 66 #include <sys/filedesc.h> 67 #include <sys/kthread.h> 68 #include <sys/kauth.h> 69 #include <sys/syscallargs.h> 70 71 #include <netinet/in.h> 72 #include <netinet/tcp.h> 73 #ifdef ISO 74 #include <netiso/iso.h> 75 #endif 76 #include <nfs/xdr_subs.h> 77 #include <nfs/rpcv2.h> 78 #include <nfs/nfsproto.h> 79 #include <nfs/nfs.h> 80 #include <nfs/nfsm_subs.h> 81 #include <nfs/nfsrvcache.h> 82 #include <nfs/nfsmount.h> 83 #include <nfs/nfsnode.h> 84 #include <nfs/nfsrtt.h> 85 #include <nfs/nfs_var.h> 86 87 /* Global defs. */ 88 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *, 89 struct nfssvc_sock *, 90 struct lwp *, struct mbuf **)); 91 extern int nfsrvw_procrastinate; 92 93 struct nfssvc_sock *nfs_udpsock; 94 #ifdef ISO 95 struct nfssvc_sock *nfs_cltpsock; 96 #endif 97 #ifdef INET6 98 struct nfssvc_sock *nfs_udp6sock; 99 #endif 100 int nuidhash_max = NFS_MAXUIDHASH; 101 #ifdef NFSSERVER 102 static int nfs_numnfsd = 0; 103 static struct nfsdrt nfsdrt; 104 #endif 105 106 #ifdef NFSSERVER 107 kmutex_t nfsd_lock; 108 struct nfssvc_sockhead nfssvc_sockhead; 109 kcondvar_t nfsd_initcv; 110 struct nfssvc_sockhead nfssvc_sockpending; 111 struct nfsdhead nfsd_head; 112 struct nfsdidlehead nfsd_idle_head; 113 114 int nfssvc_sockhead_flag; 115 int nfsd_head_flag; 116 #endif 117 118 MALLOC_DEFINE(M_NFSUID, "NFS uid", "Nfs uid mapping structure"); 119 120 #ifdef NFS 121 kmutex_t nfs_iodlist_lock; 122 struct nfs_iod nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 123 int nfs_niothreads = -1; /* == "0, and has never been set" */ 124 #endif 125 126 #ifdef NFSSERVER 127 static struct nfssvc_sock *nfsrv_sockalloc __P((void)); 128 static void nfsrv_sockfree __P((struct nfssvc_sock *)); 129 static void nfsd_rt __P((int, struct nfsrv_descript *, int)); 130 #endif 131 132 /* 133 * NFS server system calls 134 */ 135 136 137 /* 138 * Nfs server pseudo system call for the nfsd's 139 * Based on the flag value it either: 140 * - adds a socket to the selection list 141 * - remains in the kernel as an nfsd 142 * - remains in the kernel as an nfsiod 143 */ 144 int 145 sys_nfssvc(struct lwp *l, void *v, register_t *retval) 146 { 147 struct sys_nfssvc_args /* { 148 syscallarg(int) flag; 149 syscallarg(void *) argp; 150 } */ *uap = v; 151 int error; 152 #ifdef NFSSERVER 153 struct file *fp; 154 struct mbuf *nam; 155 struct nfsd_args nfsdarg; 156 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 157 struct nfsd *nfsd; 158 struct nfssvc_sock *slp; 159 struct nfsuid *nuidp; 160 #endif 161 162 /* 163 * Must be super user 164 */ 165 error = kauth_authorize_generic(l->l_cred, KAUTH_GENERIC_ISSUSER, 166 NULL); 167 if (error) 168 return (error); 169 170 /* Initialize NFS server / client shared data. */ 171 nfs_init(); 172 173 #ifdef NFSSERVER 174 mutex_enter(&nfsd_lock); 175 while (nfssvc_sockhead_flag & SLP_INIT) { 176 cv_wait(&nfsd_initcv, &nfsd_lock); 177 } 178 mutex_exit(&nfsd_lock); 179 #endif 180 if (SCARG(uap, flag) & NFSSVC_BIOD) { 181 #if defined(NFS) && defined(COMPAT_14) 182 error = kpause("nfsbiod", true, 0, NULL); /* dummy impl */ 183 #else 184 error = ENOSYS; 185 #endif 186 } else if (SCARG(uap, flag) & NFSSVC_MNTD) { 187 error = ENOSYS; 188 } else if (SCARG(uap, flag) & NFSSVC_ADDSOCK) { 189 #ifndef NFSSERVER 190 error = ENOSYS; 191 #else 192 error = copyin(SCARG(uap, argp), (void *)&nfsdarg, 193 sizeof(nfsdarg)); 194 if (error) 195 return (error); 196 /* getsock() will use the descriptor for us */ 197 error = getsock(l->l_proc->p_fd, nfsdarg.sock, &fp); 198 if (error) 199 return (error); 200 /* 201 * Get the client address for connected sockets. 202 */ 203 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 204 nam = (struct mbuf *)0; 205 else { 206 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen, 207 MT_SONAME); 208 if (error) { 209 FILE_UNUSE(fp, NULL); 210 return (error); 211 } 212 } 213 error = nfssvc_addsock(fp, nam); 214 FILE_UNUSE(fp, NULL); 215 #endif /* !NFSSERVER */ 216 } else if (SCARG(uap, flag) & NFSSVC_SETEXPORTSLIST) { 217 #ifndef NFSSERVER 218 error = ENOSYS; 219 #else 220 struct export_args *args; 221 struct mountd_exports_list mel; 222 223 error = copyin(SCARG(uap, argp), &mel, sizeof(mel)); 224 if (error != 0) 225 return error; 226 227 args = (struct export_args *)malloc(mel.mel_nexports * 228 sizeof(struct export_args), M_TEMP, M_WAITOK); 229 error = copyin(mel.mel_exports, args, mel.mel_nexports * 230 sizeof(struct export_args)); 231 if (error != 0) { 232 free(args, M_TEMP); 233 return error; 234 } 235 mel.mel_exports = args; 236 237 error = mountd_set_exports_list(&mel, l); 238 239 free(args, M_TEMP); 240 #endif /* !NFSSERVER */ 241 } else { 242 #ifndef NFSSERVER 243 error = ENOSYS; 244 #else 245 error = copyin(SCARG(uap, argp), (void *)nsd, sizeof (*nsd)); 246 if (error) 247 return (error); 248 if ((SCARG(uap, flag) & NFSSVC_AUTHIN) && 249 ((nfsd = nsd->nsd_nfsd)) != NULL && 250 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 251 slp = nfsd->nfsd_slp; 252 253 /* 254 * First check to see if another nfsd has already 255 * added this credential. 256 */ 257 LIST_FOREACH(nuidp, NUIDHASH(slp, nsd->nsd_cr.cr_uid), 258 nu_hash) { 259 if (kauth_cred_geteuid(nuidp->nu_cr) == 260 nsd->nsd_cr.cr_uid && 261 (!nfsd->nfsd_nd->nd_nam2 || 262 netaddr_match(NU_NETFAM(nuidp), 263 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 264 break; 265 } 266 if (nuidp) { 267 kauth_cred_hold(nuidp->nu_cr); 268 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 269 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 270 } else { 271 /* 272 * Nope, so we will. 273 */ 274 if (slp->ns_numuids < nuidhash_max) { 275 slp->ns_numuids++; 276 nuidp = (struct nfsuid *) 277 malloc(sizeof (struct nfsuid), M_NFSUID, 278 M_WAITOK); 279 } else 280 nuidp = (struct nfsuid *)0; 281 if ((slp->ns_flag & SLP_VALID) == 0) { 282 if (nuidp) 283 free((void *)nuidp, M_NFSUID); 284 } else { 285 if (nuidp == (struct nfsuid *)0) { 286 nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); 287 LIST_REMOVE(nuidp, nu_hash); 288 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 289 nu_lru); 290 if (nuidp->nu_flag & NU_NAM) 291 m_freem(nuidp->nu_nam); 292 } 293 nuidp->nu_flag = 0; 294 kauth_uucred_to_cred(nuidp->nu_cr, 295 &nsd->nsd_cr); 296 nuidp->nu_timestamp = nsd->nsd_timestamp; 297 nuidp->nu_expire = time_second + nsd->nsd_ttl; 298 /* 299 * and save the session key in nu_key. 300 */ 301 memcpy(nuidp->nu_key, nsd->nsd_key, 302 sizeof(nsd->nsd_key)); 303 if (nfsd->nfsd_nd->nd_nam2) { 304 struct sockaddr_in *saddr; 305 306 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 307 struct sockaddr_in *); 308 switch (saddr->sin_family) { 309 case AF_INET: 310 nuidp->nu_flag |= NU_INETADDR; 311 nuidp->nu_inetaddr = 312 saddr->sin_addr.s_addr; 313 break; 314 case AF_ISO: 315 default: 316 nuidp->nu_flag |= NU_NAM; 317 nuidp->nu_nam = m_copym( 318 nfsd->nfsd_nd->nd_nam2, 0, 319 M_COPYALL, M_WAIT); 320 break; 321 }; 322 } 323 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 324 nu_lru); 325 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 326 nuidp, nu_hash); 327 kauth_cred_hold(nuidp->nu_cr); 328 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 329 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 330 } 331 } 332 } 333 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 334 (nfsd = nsd->nsd_nfsd)) 335 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 336 error = nfssvc_nfsd(nsd, SCARG(uap, argp), l); 337 #endif /* !NFSSERVER */ 338 } 339 if (error == EINTR || error == ERESTART) 340 error = 0; 341 return (error); 342 } 343 344 #ifdef NFSSERVER 345 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure"); 346 MALLOC_DEFINE(M_NFSSVC, "NFS srvsock", "Nfs server structure"); 347 348 static struct nfssvc_sock * 349 nfsrv_sockalloc() 350 { 351 struct nfssvc_sock *slp; 352 353 slp = (struct nfssvc_sock *) 354 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 355 memset(slp, 0, sizeof (struct nfssvc_sock)); 356 mutex_init(&slp->ns_lock, MUTEX_DRIVER, IPL_SOFTNET); 357 cv_init(&slp->ns_cv, "nfsdsock"); 358 TAILQ_INIT(&slp->ns_uidlruhead); 359 LIST_INIT(&slp->ns_tq); 360 SIMPLEQ_INIT(&slp->ns_sendq); 361 mutex_enter(&nfsd_lock); 362 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 363 mutex_exit(&nfsd_lock); 364 365 return slp; 366 } 367 368 static void 369 nfsrv_sockfree(struct nfssvc_sock *slp) 370 { 371 372 KASSERT(slp->ns_so == NULL); 373 KASSERT(slp->ns_fp == NULL); 374 KASSERT((slp->ns_flag & SLP_VALID) == 0); 375 mutex_destroy(&slp->ns_lock); 376 cv_destroy(&slp->ns_cv); 377 free(slp, M_NFSSVC); 378 } 379 380 /* 381 * Adds a socket to the list for servicing by nfsds. 382 */ 383 int 384 nfssvc_addsock(fp, mynam) 385 struct file *fp; 386 struct mbuf *mynam; 387 { 388 struct mbuf *m; 389 int siz; 390 struct nfssvc_sock *slp; 391 struct socket *so; 392 struct nfssvc_sock *tslp; 393 int error, s; 394 395 so = (struct socket *)fp->f_data; 396 tslp = (struct nfssvc_sock *)0; 397 /* 398 * Add it to the list, as required. 399 */ 400 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 401 #ifdef INET6 402 if (so->so_proto->pr_domain->dom_family == AF_INET6) 403 tslp = nfs_udp6sock; 404 else 405 #endif 406 tslp = nfs_udpsock; 407 if (tslp->ns_flag & SLP_VALID) { 408 m_freem(mynam); 409 return (EPERM); 410 } 411 #ifdef ISO 412 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 413 tslp = nfs_cltpsock; 414 if (tslp->ns_flag & SLP_VALID) { 415 m_freem(mynam); 416 return (EPERM); 417 } 418 #endif /* ISO */ 419 } 420 if (so->so_type == SOCK_STREAM) 421 siz = NFS_MAXPACKET + sizeof (u_long); 422 else 423 siz = NFS_MAXPACKET; 424 error = soreserve(so, siz, siz); 425 if (error) { 426 m_freem(mynam); 427 return (error); 428 } 429 430 /* 431 * Set protocol specific options { for now TCP only } and 432 * reserve some space. For datagram sockets, this can get called 433 * repeatedly for the same socket, but that isn't harmful. 434 */ 435 if (so->so_type == SOCK_STREAM) { 436 m = m_get(M_WAIT, MT_SOOPTS); 437 MCLAIM(m, &nfs_mowner); 438 *mtod(m, int32_t *) = 1; 439 m->m_len = sizeof(int32_t); 440 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m); 441 } 442 if ((so->so_proto->pr_domain->dom_family == AF_INET 443 #ifdef INET6 444 || so->so_proto->pr_domain->dom_family == AF_INET6 445 #endif 446 ) && 447 so->so_proto->pr_protocol == IPPROTO_TCP) { 448 m = m_get(M_WAIT, MT_SOOPTS); 449 MCLAIM(m, &nfs_mowner); 450 *mtod(m, int32_t *) = 1; 451 m->m_len = sizeof(int32_t); 452 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m); 453 } 454 so->so_rcv.sb_flags &= ~SB_NOINTR; 455 so->so_rcv.sb_timeo = 0; 456 so->so_snd.sb_flags &= ~SB_NOINTR; 457 so->so_snd.sb_timeo = 0; 458 if (tslp) { 459 slp = tslp; 460 } else { 461 slp = nfsrv_sockalloc(); 462 } 463 slp->ns_so = so; 464 slp->ns_nam = mynam; 465 fp->f_count++; 466 slp->ns_fp = fp; 467 s = splsoftnet(); 468 so->so_upcallarg = (void *)slp; 469 so->so_upcall = nfsrv_rcv; 470 so->so_rcv.sb_flags |= SB_UPCALL; 471 slp->ns_flag = SLP_VALID | SLP_NEEDQ; 472 nfsrv_wakenfsd(slp); 473 splx(s); 474 return (0); 475 } 476 477 /* 478 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 479 * until it is killed by a signal. 480 */ 481 int 482 nfssvc_nfsd(nsd, argp, l) 483 struct nfsd_srvargs *nsd; 484 void *argp; 485 struct lwp *l; 486 { 487 struct timeval tv; 488 struct mbuf *m; 489 struct nfssvc_sock *slp; 490 struct nfsd *nfsd = nsd->nsd_nfsd; 491 struct nfsrv_descript *nd = NULL; 492 struct mbuf *mreq; 493 u_quad_t cur_usec; 494 int error = 0, cacherep, siz, sotype, writes_todo; 495 struct proc *p = l->l_proc; 496 int s; 497 498 #ifndef nolint 499 cacherep = RC_DOIT; 500 writes_todo = 0; 501 #endif 502 uvm_lwp_hold(l); 503 if (nfsd == NULL) { 504 nsd->nsd_nfsd = nfsd = 505 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 506 memset(nfsd, 0, sizeof (struct nfsd)); 507 cv_init(&nfsd->nfsd_cv, "nfsd"); 508 nfsd->nfsd_procp = p; 509 mutex_enter(&nfsd_lock); 510 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 511 nfs_numnfsd++; 512 mutex_exit(&nfsd_lock); 513 } 514 /* 515 * Loop getting rpc requests until SIGKILL. 516 */ 517 for (;;) { 518 if ((curcpu()->ci_schedstate.spc_flags & SPCF_SHOULDYIELD) 519 != 0) { 520 preempt(); 521 } 522 if (nfsd->nfsd_slp == NULL) { 523 mutex_enter(&nfsd_lock); 524 while (nfsd->nfsd_slp == NULL && 525 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 526 SLIST_INSERT_HEAD(&nfsd_idle_head, nfsd, 527 nfsd_idle); 528 error = cv_wait_sig(&nfsd->nfsd_cv, &nfsd_lock); 529 if (error) { 530 slp = nfsd->nfsd_slp; 531 nfsd->nfsd_slp = NULL; 532 if (!slp) 533 SLIST_REMOVE(&nfsd_idle_head, 534 nfsd, nfsd, nfsd_idle); 535 mutex_exit(&nfsd_lock); 536 if (slp) { 537 nfsrv_wakenfsd(slp); 538 nfsrv_slpderef(slp); 539 } 540 goto done; 541 } 542 KASSERT(nfsd->nfsd_slp != NULL); 543 } 544 if (nfsd->nfsd_slp == NULL && 545 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 546 slp = TAILQ_FIRST(&nfssvc_sockpending); 547 if (slp) { 548 KASSERT((slp->ns_flag & SLP_DOREC) 549 != 0); 550 TAILQ_REMOVE(&nfssvc_sockpending, slp, 551 ns_pending); 552 slp->ns_flag &= ~SLP_DOREC; 553 slp->ns_sref++; 554 nfsd->nfsd_slp = slp; 555 } else 556 nfsd_head_flag &= ~NFSD_CHECKSLP; 557 } 558 KASSERT(nfsd->nfsd_slp == NULL || 559 nfsd->nfsd_slp->ns_sref > 0); 560 mutex_exit(&nfsd_lock); 561 if ((slp = nfsd->nfsd_slp) == NULL) 562 continue; 563 KASSERT(slp->ns_sref > 0); 564 if (slp->ns_flag & SLP_VALID) { 565 if ((slp->ns_flag & SLP_NEEDQ) != 0) { 566 nfsrv_rcv(slp->ns_so, (void *)slp, 567 M_WAIT); 568 } 569 if ((slp->ns_flag & SLP_DISCONN) != 0) { 570 nfsrv_zapsock(slp); 571 } 572 error = nfsrv_dorec(slp, nfsd, &nd); 573 getmicrotime(&tv); 574 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 575 (u_quad_t)tv.tv_usec; 576 if (error && LIST_FIRST(&slp->ns_tq) && 577 LIST_FIRST(&slp->ns_tq)->nd_time <= 578 cur_usec) { 579 error = 0; 580 cacherep = RC_DOIT; 581 writes_todo = 1; 582 } else 583 writes_todo = 0; 584 if (error == 0 && slp->ns_rec != NULL) { 585 nfsrv_wakenfsd(slp); 586 } 587 } 588 } else { 589 error = 0; 590 slp = nfsd->nfsd_slp; 591 } 592 KASSERT(slp != NULL); 593 KASSERT(nfsd->nfsd_slp == slp); 594 if (error || (slp->ns_flag & SLP_VALID) == 0) { 595 if (nd) { 596 nfsdreq_free(nd); 597 nd = NULL; 598 } 599 nfsd->nfsd_slp = NULL; 600 nfsrv_slpderef(slp); 601 continue; 602 } 603 sotype = slp->ns_so->so_type; 604 if (nd) { 605 getmicrotime(&nd->nd_starttime); 606 if (nd->nd_nam2) 607 nd->nd_nam = nd->nd_nam2; 608 else 609 nd->nd_nam = slp->ns_nam; 610 611 /* 612 * Check to see if authorization is needed. 613 */ 614 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 615 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 616 nsd->nsd_haddr = mtod(nd->nd_nam, 617 struct sockaddr_in *)->sin_addr.s_addr; 618 nsd->nsd_authlen = nfsd->nfsd_authlen; 619 nsd->nsd_verflen = nfsd->nfsd_verflen; 620 if (!copyout(nfsd->nfsd_authstr, 621 nsd->nsd_authstr, nfsd->nfsd_authlen) && 622 !copyout(nfsd->nfsd_verfstr, 623 nsd->nsd_verfstr, nfsd->nfsd_verflen) && 624 !copyout(nsd, argp, sizeof (*nsd))) { 625 uvm_lwp_rele(l); 626 return (ENEEDAUTH); 627 } 628 cacherep = RC_DROPIT; 629 } else 630 cacherep = nfsrv_getcache(nd, slp, &mreq); 631 632 if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 633 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 634 nd->nd_procnum = NFSPROC_NOOP; 635 nd->nd_repstat = 636 (NFSERR_AUTHERR | AUTH_TOOWEAK); 637 cacherep = RC_DOIT; 638 } 639 } 640 641 /* 642 * Loop to get all the write rpc relies that have been 643 * gathered together. 644 */ 645 do { 646 #ifdef DIAGNOSTIC 647 int lockcount; 648 #endif 649 switch (cacherep) { 650 case RC_DOIT: 651 #ifdef DIAGNOSTIC 652 /* 653 * NFS server procs should neither release 654 * locks already held, nor leave things 655 * locked. Catch this sooner, rather than 656 * later (when we try to relock something we 657 * already have locked). Careful inspection 658 * of the failing routine usually turns up the 659 * lock leak.. once we know what it is.. 660 */ 661 lockcount = l->l_locks; 662 #endif 663 mreq = NULL; 664 netexport_rdlock(); 665 if (writes_todo || nd == NULL || 666 (!(nd->nd_flag & ND_NFSV3) && 667 nd->nd_procnum == NFSPROC_WRITE && 668 nfsrvw_procrastinate > 0)) 669 error = nfsrv_writegather(&nd, slp, 670 l, &mreq); 671 else 672 error = 673 (*(nfsrv3_procs[nd->nd_procnum])) 674 (nd, slp, l, &mreq); 675 netexport_rdunlock(); 676 #ifdef DIAGNOSTIC 677 if (l->l_locks != lockcount) { 678 /* 679 * If you see this panic, audit 680 * nfsrv3_procs[nd->nd_procnum] for 681 * vnode locking errors (usually, it's 682 * due to forgetting to vput() 683 * something). 684 */ 685 #ifdef DEBUG 686 extern void printlockedvnodes(void); 687 printlockedvnodes(); 688 #endif 689 printf("nfsd: locking botch in op %d" 690 " (before %d, after %d)\n", 691 nd ? nd->nd_procnum : -1, 692 lockcount, l->l_locks); 693 } 694 #endif 695 if (mreq == NULL) { 696 if (nd != NULL) { 697 if (nd->nd_nam2) 698 m_free(nd->nd_nam2); 699 if (nd->nd_mrep) 700 m_freem(nd->nd_mrep); 701 } 702 break; 703 } 704 if (error) { 705 nfsstats.srv_errs++; 706 nfsrv_updatecache(nd, false, mreq); 707 if (nd->nd_nam2) 708 m_freem(nd->nd_nam2); 709 break; 710 } 711 nfsstats.srvrpccnt[nd->nd_procnum]++; 712 nfsrv_updatecache(nd, true, mreq); 713 nd->nd_mrep = (struct mbuf *)0; 714 case RC_REPLY: 715 m = mreq; 716 siz = 0; 717 while (m) { 718 siz += m->m_len; 719 m = m->m_next; 720 } 721 if (siz <= 0 || siz > NFS_MAXPACKET) { 722 printf("mbuf siz=%d\n",siz); 723 panic("Bad nfs svc reply"); 724 } 725 m = mreq; 726 m->m_pkthdr.len = siz; 727 m->m_pkthdr.rcvif = (struct ifnet *)0; 728 /* 729 * For stream protocols, prepend a Sun RPC 730 * Record Mark. 731 */ 732 if (sotype == SOCK_STREAM) { 733 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 734 *mtod(m, u_int32_t *) = 735 htonl(0x80000000 | siz); 736 } 737 nd->nd_mreq = m; 738 if (nfsrtton) { 739 nfsd_rt(slp->ns_so->so_type, nd, 740 cacherep); 741 } 742 error = nfsdsock_sendreply(slp, nd); 743 nd = NULL; 744 if (error == EPIPE) 745 nfsrv_zapsock(slp); 746 if (error == EINTR || error == ERESTART) { 747 nfsd->nfsd_slp = NULL; 748 nfsrv_slpderef(slp); 749 goto done; 750 } 751 break; 752 case RC_DROPIT: 753 if (nfsrtton) 754 nfsd_rt(sotype, nd, cacherep); 755 m_freem(nd->nd_mrep); 756 m_freem(nd->nd_nam2); 757 break; 758 } 759 if (nd) { 760 nfsdreq_free(nd); 761 nd = NULL; 762 } 763 764 /* 765 * Check to see if there are outstanding writes that 766 * need to be serviced. 767 */ 768 getmicrotime(&tv); 769 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 770 (u_quad_t)tv.tv_usec; 771 s = splsoftclock(); 772 if (LIST_FIRST(&slp->ns_tq) && 773 LIST_FIRST(&slp->ns_tq)->nd_time <= cur_usec) { 774 cacherep = RC_DOIT; 775 writes_todo = 1; 776 } else 777 writes_todo = 0; 778 splx(s); 779 } while (writes_todo); 780 if (nfsrv_dorec(slp, nfsd, &nd)) { 781 nfsd->nfsd_slp = NULL; 782 nfsrv_slpderef(slp); 783 } 784 } 785 done: 786 mutex_enter(&nfsd_lock); 787 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 788 mutex_exit(&nfsd_lock); 789 cv_destroy(&nfsd->nfsd_cv); 790 free(nfsd, M_NFSD); 791 nsd->nsd_nfsd = NULL; 792 if (--nfs_numnfsd == 0) 793 nfsrv_init(true); /* Reinitialize everything */ 794 uvm_lwp_rele(l); 795 return (error); 796 } 797 798 /* 799 * Shut down a socket associated with an nfssvc_sock structure. 800 * Should be called with the send lock set, if required. 801 * The trick here is to increment the sref at the start, so that the nfsds 802 * will stop using it and clear ns_flag at the end so that it will not be 803 * reassigned during cleanup. 804 * 805 * called at splsoftnet. 806 */ 807 void 808 nfsrv_zapsock(slp) 809 struct nfssvc_sock *slp; 810 { 811 struct nfsuid *nuidp, *nnuidp; 812 struct nfsrv_descript *nwp, *nnwp; 813 struct socket *so; 814 struct mbuf *m; 815 int s; 816 817 if (nfsdsock_drain(slp)) { 818 return; 819 } 820 mutex_enter(&nfsd_lock); 821 if (slp->ns_flag & SLP_DOREC) { 822 TAILQ_REMOVE(&nfssvc_sockpending, slp, ns_pending); 823 slp->ns_flag &= ~SLP_DOREC; 824 } 825 mutex_exit(&nfsd_lock); 826 827 so = slp->ns_so; 828 KASSERT(so != NULL); 829 so->so_upcall = NULL; 830 so->so_upcallarg = NULL; 831 so->so_rcv.sb_flags &= ~SB_UPCALL; 832 soshutdown(so, SHUT_RDWR); 833 834 if (slp->ns_nam) 835 m_free(slp->ns_nam); 836 m_freem(slp->ns_raw); 837 m = slp->ns_rec; 838 while (m != NULL) { 839 struct mbuf *n; 840 841 n = m->m_nextpkt; 842 m_freem(m); 843 m = n; 844 } 845 for (nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); nuidp != 0; 846 nuidp = nnuidp) { 847 nnuidp = TAILQ_NEXT(nuidp, nu_lru); 848 LIST_REMOVE(nuidp, nu_hash); 849 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 850 if (nuidp->nu_flag & NU_NAM) 851 m_freem(nuidp->nu_nam); 852 free((void *)nuidp, M_NFSUID); 853 } 854 s = splsoftclock(); 855 for (nwp = LIST_FIRST(&slp->ns_tq); nwp; nwp = nnwp) { 856 nnwp = LIST_NEXT(nwp, nd_tq); 857 LIST_REMOVE(nwp, nd_tq); 858 nfsdreq_free(nwp); 859 } 860 splx(s); 861 } 862 863 /* 864 * Derefence a server socket structure. If it has no more references and 865 * is no longer valid, you can throw it away. 866 */ 867 void 868 nfsrv_slpderef(slp) 869 struct nfssvc_sock *slp; 870 { 871 uint32_t ref; 872 873 mutex_enter(&nfsd_lock); 874 KASSERT(slp->ns_sref > 0); 875 ref = --slp->ns_sref; 876 mutex_exit(&nfsd_lock); 877 if (ref == 0 && (slp->ns_flag & SLP_VALID) == 0) { 878 struct file *fp; 879 880 mutex_enter(&nfsd_lock); 881 KASSERT((slp->ns_flag & SLP_DOREC) == 0); 882 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 883 mutex_exit(&nfsd_lock); 884 885 fp = slp->ns_fp; 886 if (fp != NULL) { 887 slp->ns_fp = NULL; 888 KASSERT(fp != NULL); 889 KASSERT(fp->f_data == slp->ns_so); 890 simple_lock(&fp->f_slock); 891 FILE_USE(fp); 892 closef(fp, (struct lwp *)0); 893 slp->ns_so = NULL; 894 } 895 896 nfsrv_sockfree(slp); 897 } 898 } 899 900 /* 901 * Initialize the data structures for the server. 902 * Handshake with any new nfsds starting up to avoid any chance of 903 * corruption. 904 */ 905 void 906 nfsrv_init(terminating) 907 int terminating; 908 { 909 struct nfssvc_sock *slp; 910 911 if (!terminating) { 912 mutex_init(&nfsd_lock, MUTEX_DRIVER, IPL_SOFTNET); 913 cv_init(&nfsd_initcv, "nfsdinit"); 914 } 915 916 mutex_enter(&nfsd_lock); 917 if (nfssvc_sockhead_flag & SLP_INIT) 918 panic("nfsd init"); 919 nfssvc_sockhead_flag |= SLP_INIT; 920 921 if (terminating) { 922 KASSERT(SLIST_EMPTY(&nfsd_idle_head)); 923 KASSERT(TAILQ_EMPTY(&nfsd_head)); 924 while ((slp = TAILQ_FIRST(&nfssvc_sockhead)) != NULL) { 925 mutex_exit(&nfsd_lock); 926 KASSERT(slp->ns_sref == 0); 927 slp->ns_sref++; 928 nfsrv_zapsock(slp); 929 nfsrv_slpderef(slp); 930 mutex_enter(&nfsd_lock); 931 } 932 KASSERT(TAILQ_EMPTY(&nfssvc_sockpending)); 933 mutex_exit(&nfsd_lock); 934 nfsrv_cleancache(); /* And clear out server cache */ 935 } else { 936 mutex_exit(&nfsd_lock); 937 nfs_pub.np_valid = 0; 938 } 939 940 TAILQ_INIT(&nfssvc_sockhead); 941 TAILQ_INIT(&nfssvc_sockpending); 942 943 TAILQ_INIT(&nfsd_head); 944 SLIST_INIT(&nfsd_idle_head); 945 nfsd_head_flag &= ~NFSD_CHECKSLP; 946 947 nfs_udpsock = nfsrv_sockalloc(); 948 949 #ifdef INET6 950 nfs_udp6sock = nfsrv_sockalloc(); 951 #endif 952 953 #ifdef ISO 954 nfs_cltpsock = nfsrv_sockalloc(); 955 #endif 956 957 mutex_enter(&nfsd_lock); 958 nfssvc_sockhead_flag &= ~SLP_INIT; 959 cv_broadcast(&nfsd_initcv); 960 mutex_exit(&nfsd_lock); 961 } 962 963 /* 964 * Add entries to the server monitor log. 965 */ 966 static void 967 nfsd_rt(sotype, nd, cacherep) 968 int sotype; 969 struct nfsrv_descript *nd; 970 int cacherep; 971 { 972 struct timeval tv; 973 struct drt *rt; 974 975 rt = &nfsdrt.drt[nfsdrt.pos]; 976 if (cacherep == RC_DOIT) 977 rt->flag = 0; 978 else if (cacherep == RC_REPLY) 979 rt->flag = DRT_CACHEREPLY; 980 else 981 rt->flag = DRT_CACHEDROP; 982 if (sotype == SOCK_STREAM) 983 rt->flag |= DRT_TCP; 984 if (nd->nd_flag & ND_NFSV3) 985 rt->flag |= DRT_NFSV3; 986 rt->proc = nd->nd_procnum; 987 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 988 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 989 else 990 rt->ipadr = INADDR_ANY; 991 getmicrotime(&tv); 992 rt->resptime = ((tv.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 993 (tv.tv_usec - nd->nd_starttime.tv_usec); 994 rt->tstamp = tv; 995 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 996 } 997 #endif /* NFSSERVER */ 998 999 #ifdef NFS 1000 1001 int nfs_defect = 0; 1002 /* 1003 * Asynchronous I/O threads for client nfs. 1004 * They do read-ahead and write-behind operations on the block I/O cache. 1005 * Never returns unless it fails or gets killed. 1006 */ 1007 1008 static void 1009 nfssvc_iod(void *arg) 1010 { 1011 struct lwp *l = curlwp; 1012 struct buf *bp; 1013 int i; 1014 struct nfs_iod *myiod; 1015 struct nfsmount *nmp; 1016 1017 /* 1018 * Assign my position or return error if too many already running 1019 */ 1020 myiod = NULL; 1021 mutex_enter(&nfs_iodlist_lock); 1022 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 1023 if (nfs_asyncdaemon[i].nid_lwp == NULL) { 1024 myiod = &nfs_asyncdaemon[i]; 1025 myiod->nid_lwp = l; 1026 nfs_numasync++; 1027 break; 1028 } 1029 } 1030 mutex_exit(&nfs_iodlist_lock); 1031 if (myiod == NULL) { 1032 goto quit; 1033 } 1034 myiod->nid_exiting = false; 1035 1036 for (;;) { 1037 mutex_enter(&myiod->nid_lock); 1038 while (/*CONSTCOND*/ true) { 1039 nmp = myiod->nid_mount; 1040 if (nmp) { 1041 mutex_enter(&nmp->nm_lock); 1042 if (!TAILQ_EMPTY(&nmp->nm_bufq)) { 1043 mutex_exit(&myiod->nid_lock); 1044 break; 1045 } 1046 nmp->nm_bufqiods--; 1047 mutex_exit(&nmp->nm_lock); 1048 } 1049 myiod->nid_want = true; 1050 myiod->nid_mount = NULL; 1051 if (myiod->nid_exiting) { 1052 goto quit; 1053 } 1054 cv_wait(&myiod->nid_cv, &myiod->nid_lock); 1055 } 1056 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, l); 1066 (void)nfs_doio(bp); 1067 KERNEL_UNLOCK_ONE(l); 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 myiod->nid_mount = NULL; 1076 nmp->nm_bufqiods--; 1077 break; 1078 } 1079 } 1080 mutex_exit(&nmp->nm_lock); 1081 } 1082 quit: 1083 if (myiod != NULL) { 1084 KASSERT(mutex_owned(&myiod->nid_lock)); 1085 KASSERT(myiod->nid_mount == NULL); 1086 myiod->nid_want = false; 1087 myiod->nid_mount = NULL; 1088 mutex_exit(&myiod->nid_lock); 1089 mutex_enter(&nfs_iodlist_lock); 1090 myiod->nid_lwp = NULL; 1091 nfs_numasync--; 1092 mutex_exit(&nfs_iodlist_lock); 1093 } 1094 1095 kthread_exit(0); 1096 } 1097 1098 void 1099 nfs_iodinit() 1100 { 1101 int i; 1102 1103 mutex_init(&nfs_iodlist_lock, MUTEX_DEFAULT, IPL_NONE); 1104 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 1105 struct nfs_iod *nid = &nfs_asyncdaemon[i]; 1106 mutex_init(&nid->nid_lock, MUTEX_DEFAULT, IPL_NONE); 1107 cv_init(&nid->nid_cv, "nfsiod"); 1108 } 1109 } 1110 1111 void 1112 nfs_getset_niothreads(set) 1113 int set; 1114 { 1115 int i, have, start; 1116 1117 mutex_enter(&nfs_iodlist_lock); 1118 for (have = 0, i = 0; i < NFS_MAXASYNCDAEMON; i++) 1119 if (nfs_asyncdaemon[i].nid_lwp != NULL) 1120 have++; 1121 1122 if (set) { 1123 /* clamp to sane range */ 1124 nfs_niothreads = max(0, min(nfs_niothreads, NFS_MAXASYNCDAEMON)); 1125 1126 start = nfs_niothreads - have; 1127 1128 while (start > 0) { 1129 kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, 1130 nfssvc_iod, NULL, NULL, "nfsio"); 1131 start--; 1132 } 1133 1134 for (i = 0; (start < 0) && (i < NFS_MAXASYNCDAEMON); i++) { 1135 struct nfs_iod *nid = &nfs_asyncdaemon[i]; 1136 1137 if (nid->nid_lwp != NULL) { 1138 mutex_enter(&nid->nid_lock); 1139 nid->nid_exiting = true; 1140 cv_signal(&nid->nid_cv); 1141 mutex_exit(&nid->nid_lock); 1142 start++; 1143 } 1144 } 1145 } else { 1146 if (nfs_niothreads >= 0) 1147 nfs_niothreads = have; 1148 } 1149 mutex_exit(&nfs_iodlist_lock); 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 = (struct nfsuid *) 1328 malloc(sizeof (struct nfsuid), M_NFSUID, 1329 M_WAITOK); 1330 } else { 1331 nuidp = TAILQ_FIRST(&nmp->nm_uidlruhead); 1332 LIST_REMOVE(nuidp, nu_hash); 1333 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1334 nu_lru); 1335 } 1336 nuidp->nu_flag = 0; 1337 kauth_cred_seteuid(nuidp->nu_cr, kauth_cred_geteuid(cred)); 1338 nuidp->nu_expire = time_second + NFS_KERBTTL; 1339 nuidp->nu_timestamp = ktvout; 1340 nuidp->nu_nickname = nick; 1341 memcpy(nuidp->nu_key, key, sizeof (NFSKERBKEY_T)); 1342 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1343 nu_lru); 1344 LIST_INSERT_HEAD(NMUIDHASH(nmp, kauth_cred_geteuid(cred)), 1345 nuidp, nu_hash); 1346 } 1347 } else 1348 nfsm_adv(nfsm_rndup(len)); 1349 nfsmout: 1350 *mdp = md; 1351 *dposp = dpos; 1352 return (error); 1353 } 1354 #endif /* NFS */ 1355
Indexes created Thu Oct 23 22:10:10 GMT 2025