nfs_syscalls.c revision 1.122.4.2
1 /* $NetBSD: nfs_syscalls.c,v 1.122.4.2 2007/08/02 12:46:04 yamt 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 1.122.4.2 2007/08/02 12:46:04 yamt 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 struct nfs_iod nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 122 int nfs_niothreads = -1; /* == "0, and has never been set" */ 123 #endif 124 125 #ifdef NFSSERVER 126 static struct nfssvc_sock *nfsrv_sockalloc __P((void)); 127 static void nfsrv_sockfree __P((struct nfssvc_sock *)); 128 static void nfsd_rt __P((int, struct nfsrv_descript *, int)); 129 #endif 130 131 /* 132 * NFS server system calls 133 */ 134 135 136 /* 137 * Nfs server pseudo system call for the nfsd's 138 * Based on the flag value it either: 139 * - adds a socket to the selection list 140 * - remains in the kernel as an nfsd 141 * - remains in the kernel as an nfsiod 142 */ 143 int 144 sys_nfssvc(struct lwp *l, void *v, register_t *retval) 145 { 146 struct sys_nfssvc_args /* { 147 syscallarg(int) flag; 148 syscallarg(void *) argp; 149 } */ *uap = v; 150 int error; 151 #ifdef NFSSERVER 152 struct file *fp; 153 struct mbuf *nam; 154 struct nfsd_args nfsdarg; 155 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 156 struct nfsd *nfsd; 157 struct nfssvc_sock *slp; 158 struct nfsuid *nuidp; 159 #endif 160 161 /* 162 * Must be super user 163 */ 164 error = kauth_authorize_generic(l->l_cred, KAUTH_GENERIC_ISSUSER, 165 NULL); 166 if (error) 167 return (error); 168 169 /* Initialize NFS server / client shared data. */ 170 nfs_init(); 171 172 #ifdef NFSSERVER 173 mutex_enter(&nfsd_lock); 174 while (nfssvc_sockhead_flag & SLP_INIT) { 175 cv_wait(&nfsd_initcv, &nfsd_lock); 176 } 177 mutex_exit(&nfsd_lock); 178 #endif 179 if (SCARG(uap, flag) & NFSSVC_BIOD) { 180 #if defined(NFS) && defined(COMPAT_14) 181 error = kpause("nfsbiod", true, 0, NULL); /* dummy impl */ 182 #else 183 error = ENOSYS; 184 #endif 185 } else if (SCARG(uap, flag) & NFSSVC_MNTD) { 186 error = ENOSYS; 187 } else if (SCARG(uap, flag) & NFSSVC_ADDSOCK) { 188 #ifndef NFSSERVER 189 error = ENOSYS; 190 #else 191 error = copyin(SCARG(uap, argp), (void *)&nfsdarg, 192 sizeof(nfsdarg)); 193 if (error) 194 return (error); 195 /* getsock() will use the descriptor for us */ 196 error = getsock(l->l_proc->p_fd, nfsdarg.sock, &fp); 197 if (error) 198 return (error); 199 /* 200 * Get the client address for connected sockets. 201 */ 202 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 203 nam = (struct mbuf *)0; 204 else { 205 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen, 206 MT_SONAME); 207 if (error) { 208 FILE_UNUSE(fp, NULL); 209 return (error); 210 } 211 } 212 error = nfssvc_addsock(fp, nam); 213 FILE_UNUSE(fp, NULL); 214 #endif /* !NFSSERVER */ 215 } else if (SCARG(uap, flag) & NFSSVC_SETEXPORTSLIST) { 216 #ifndef NFSSERVER 217 error = ENOSYS; 218 #else 219 struct export_args *args; 220 struct mountd_exports_list mel; 221 222 error = copyin(SCARG(uap, argp), &mel, sizeof(mel)); 223 if (error != 0) 224 return error; 225 226 args = (struct export_args *)malloc(mel.mel_nexports * 227 sizeof(struct export_args), M_TEMP, M_WAITOK); 228 error = copyin(mel.mel_exports, args, mel.mel_nexports * 229 sizeof(struct export_args)); 230 if (error != 0) { 231 free(args, M_TEMP); 232 return error; 233 } 234 mel.mel_exports = args; 235 236 error = mountd_set_exports_list(&mel, l); 237 238 free(args, M_TEMP); 239 #endif /* !NFSSERVER */ 240 } else { 241 #ifndef NFSSERVER 242 error = ENOSYS; 243 #else 244 error = copyin(SCARG(uap, argp), (void *)nsd, sizeof (*nsd)); 245 if (error) 246 return (error); 247 if ((SCARG(uap, flag) & NFSSVC_AUTHIN) && 248 ((nfsd = nsd->nsd_nfsd)) != NULL && 249 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 250 slp = nfsd->nfsd_slp; 251 252 /* 253 * First check to see if another nfsd has already 254 * added this credential. 255 */ 256 LIST_FOREACH(nuidp, NUIDHASH(slp, nsd->nsd_cr.cr_uid), 257 nu_hash) { 258 if (kauth_cred_geteuid(nuidp->nu_cr) == 259 nsd->nsd_cr.cr_uid && 260 (!nfsd->nfsd_nd->nd_nam2 || 261 netaddr_match(NU_NETFAM(nuidp), 262 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 263 break; 264 } 265 if (nuidp) { 266 kauth_cred_hold(nuidp->nu_cr); 267 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 268 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 269 } else { 270 /* 271 * Nope, so we will. 272 */ 273 if (slp->ns_numuids < nuidhash_max) { 274 slp->ns_numuids++; 275 nuidp = (struct nfsuid *) 276 malloc(sizeof (struct nfsuid), M_NFSUID, 277 M_WAITOK); 278 } else 279 nuidp = (struct nfsuid *)0; 280 if ((slp->ns_flag & SLP_VALID) == 0) { 281 if (nuidp) 282 free((void *)nuidp, M_NFSUID); 283 } else { 284 if (nuidp == (struct nfsuid *)0) { 285 nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); 286 LIST_REMOVE(nuidp, nu_hash); 287 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 288 nu_lru); 289 if (nuidp->nu_flag & NU_NAM) 290 m_freem(nuidp->nu_nam); 291 } 292 nuidp->nu_flag = 0; 293 kauth_uucred_to_cred(nuidp->nu_cr, 294 &nsd->nsd_cr); 295 nuidp->nu_timestamp = nsd->nsd_timestamp; 296 nuidp->nu_expire = time_second + nsd->nsd_ttl; 297 /* 298 * and save the session key in nu_key. 299 */ 300 memcpy(nuidp->nu_key, nsd->nsd_key, 301 sizeof(nsd->nsd_key)); 302 if (nfsd->nfsd_nd->nd_nam2) { 303 struct sockaddr_in *saddr; 304 305 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 306 struct sockaddr_in *); 307 switch (saddr->sin_family) { 308 case AF_INET: 309 nuidp->nu_flag |= NU_INETADDR; 310 nuidp->nu_inetaddr = 311 saddr->sin_addr.s_addr; 312 break; 313 case AF_ISO: 314 default: 315 nuidp->nu_flag |= NU_NAM; 316 nuidp->nu_nam = m_copym( 317 nfsd->nfsd_nd->nd_nam2, 0, 318 M_COPYALL, M_WAIT); 319 break; 320 }; 321 } 322 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 323 nu_lru); 324 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 325 nuidp, nu_hash); 326 kauth_cred_hold(nuidp->nu_cr); 327 nfsd->nfsd_nd->nd_cr = nuidp->nu_cr; 328 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 329 } 330 } 331 } 332 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 333 (nfsd = nsd->nsd_nfsd)) 334 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 335 error = nfssvc_nfsd(nsd, SCARG(uap, argp), l); 336 #endif /* !NFSSERVER */ 337 } 338 if (error == EINTR || error == ERESTART) 339 error = 0; 340 return (error); 341 } 342 343 #ifdef NFSSERVER 344 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure"); 345 MALLOC_DEFINE(M_NFSSVC, "NFS srvsock", "Nfs server structure"); 346 347 static struct nfssvc_sock * 348 nfsrv_sockalloc() 349 { 350 struct nfssvc_sock *slp; 351 352 slp = (struct nfssvc_sock *) 353 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 354 memset(slp, 0, sizeof (struct nfssvc_sock)); 355 mutex_init(&slp->ns_lock, MUTEX_DRIVER, IPL_SOFTNET); 356 cv_init(&slp->ns_cv, "nfsdsock"); 357 TAILQ_INIT(&slp->ns_uidlruhead); 358 LIST_INIT(&slp->ns_tq); 359 SIMPLEQ_INIT(&slp->ns_sendq); 360 mutex_enter(&nfsd_lock); 361 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 362 mutex_exit(&nfsd_lock); 363 364 return slp; 365 } 366 367 static void 368 nfsrv_sockfree(struct nfssvc_sock *slp) 369 { 370 371 KASSERT(slp->ns_so == NULL); 372 KASSERT(slp->ns_fp == NULL); 373 KASSERT((slp->ns_flag & SLP_VALID) == 0); 374 mutex_destroy(&slp->ns_lock); 375 cv_destroy(&slp->ns_cv); 376 free(slp, M_NFSSVC); 377 } 378 379 /* 380 * Adds a socket to the list for servicing by nfsds. 381 */ 382 int 383 nfssvc_addsock(fp, mynam) 384 struct file *fp; 385 struct mbuf *mynam; 386 { 387 struct mbuf *m; 388 int siz; 389 struct nfssvc_sock *slp; 390 struct socket *so; 391 struct nfssvc_sock *tslp; 392 int error, s; 393 394 so = (struct socket *)fp->f_data; 395 tslp = (struct nfssvc_sock *)0; 396 /* 397 * Add it to the list, as required. 398 */ 399 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 400 #ifdef INET6 401 if (so->so_proto->pr_domain->dom_family == AF_INET6) 402 tslp = nfs_udp6sock; 403 else 404 #endif 405 tslp = nfs_udpsock; 406 if (tslp->ns_flag & SLP_VALID) { 407 m_freem(mynam); 408 return (EPERM); 409 } 410 #ifdef ISO 411 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 412 tslp = nfs_cltpsock; 413 if (tslp->ns_flag & SLP_VALID) { 414 m_freem(mynam); 415 return (EPERM); 416 } 417 #endif /* ISO */ 418 } 419 if (so->so_type == SOCK_STREAM) 420 siz = NFS_MAXPACKET + sizeof (u_long); 421 else 422 siz = NFS_MAXPACKET; 423 error = soreserve(so, siz, siz); 424 if (error) { 425 m_freem(mynam); 426 return (error); 427 } 428 429 /* 430 * Set protocol specific options { for now TCP only } and 431 * reserve some space. For datagram sockets, this can get called 432 * repeatedly for the same socket, but that isn't harmful. 433 */ 434 if (so->so_type == SOCK_STREAM) { 435 m = m_get(M_WAIT, MT_SOOPTS); 436 MCLAIM(m, &nfs_mowner); 437 *mtod(m, int32_t *) = 1; 438 m->m_len = sizeof(int32_t); 439 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m); 440 } 441 if ((so->so_proto->pr_domain->dom_family == AF_INET 442 #ifdef INET6 443 || so->so_proto->pr_domain->dom_family == AF_INET6 444 #endif 445 ) && 446 so->so_proto->pr_protocol == IPPROTO_TCP) { 447 m = m_get(M_WAIT, MT_SOOPTS); 448 MCLAIM(m, &nfs_mowner); 449 *mtod(m, int32_t *) = 1; 450 m->m_len = sizeof(int32_t); 451 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m); 452 } 453 so->so_rcv.sb_flags &= ~SB_NOINTR; 454 so->so_rcv.sb_timeo = 0; 455 so->so_snd.sb_flags &= ~SB_NOINTR; 456 so->so_snd.sb_timeo = 0; 457 if (tslp) { 458 slp = tslp; 459 } else { 460 slp = nfsrv_sockalloc(); 461 } 462 slp->ns_so = so; 463 slp->ns_nam = mynam; 464 fp->f_count++; 465 slp->ns_fp = fp; 466 s = splsoftnet(); 467 so->so_upcallarg = (void *)slp; 468 so->so_upcall = nfsrv_rcv; 469 so->so_rcv.sb_flags |= SB_UPCALL; 470 slp->ns_flag = SLP_VALID | SLP_NEEDQ; 471 nfsrv_wakenfsd(slp); 472 splx(s); 473 return (0); 474 } 475 476 /* 477 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 478 * until it is killed by a signal. 479 */ 480 int 481 nfssvc_nfsd(nsd, argp, l) 482 struct nfsd_srvargs *nsd; 483 void *argp; 484 struct lwp *l; 485 { 486 struct timeval tv; 487 struct mbuf *m; 488 struct nfssvc_sock *slp; 489 struct nfsd *nfsd = nsd->nsd_nfsd; 490 struct nfsrv_descript *nd = NULL; 491 struct mbuf *mreq; 492 u_quad_t cur_usec; 493 int error = 0, cacherep, siz, sotype, writes_todo; 494 struct proc *p = l->l_proc; 495 int s; 496 497 #ifndef nolint 498 cacherep = RC_DOIT; 499 writes_todo = 0; 500 #endif 501 uvm_lwp_hold(l); 502 if (nfsd == NULL) { 503 nsd->nsd_nfsd = nfsd = 504 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 505 memset(nfsd, 0, sizeof (struct nfsd)); 506 cv_init(&nfsd->nfsd_cv, "nfsd"); 507 nfsd->nfsd_procp = p; 508 mutex_enter(&nfsd_lock); 509 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 510 nfs_numnfsd++; 511 mutex_exit(&nfsd_lock); 512 } 513 /* 514 * Loop getting rpc requests until SIGKILL. 515 */ 516 for (;;) { 517 if ((curcpu()->ci_schedstate.spc_flags & SPCF_SHOULDYIELD) 518 != 0) { 519 preempt(); 520 } 521 if (nfsd->nfsd_slp == NULL) { 522 mutex_enter(&nfsd_lock); 523 while (nfsd->nfsd_slp == NULL && 524 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 525 SLIST_INSERT_HEAD(&nfsd_idle_head, nfsd, 526 nfsd_idle); 527 error = cv_wait_sig(&nfsd->nfsd_cv, &nfsd_lock); 528 if (error) { 529 slp = nfsd->nfsd_slp; 530 nfsd->nfsd_slp = NULL; 531 if (!slp) 532 SLIST_REMOVE(&nfsd_idle_head, 533 nfsd, nfsd, nfsd_idle); 534 mutex_exit(&nfsd_lock); 535 if (slp) { 536 nfsrv_wakenfsd(slp); 537 nfsrv_slpderef(slp); 538 } 539 goto done; 540 } 541 KASSERT(nfsd->nfsd_slp != NULL); 542 } 543 if (nfsd->nfsd_slp == NULL && 544 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 545 slp = TAILQ_FIRST(&nfssvc_sockpending); 546 if (slp) { 547 KASSERT((slp->ns_flag & SLP_DOREC) 548 != 0); 549 TAILQ_REMOVE(&nfssvc_sockpending, slp, 550 ns_pending); 551 slp->ns_flag &= ~SLP_DOREC; 552 slp->ns_sref++; 553 nfsd->nfsd_slp = slp; 554 } else 555 nfsd_head_flag &= ~NFSD_CHECKSLP; 556 } 557 KASSERT(nfsd->nfsd_slp == NULL || 558 nfsd->nfsd_slp->ns_sref > 0); 559 mutex_exit(&nfsd_lock); 560 if ((slp = nfsd->nfsd_slp) == NULL) 561 continue; 562 KASSERT(slp->ns_sref > 0); 563 if (slp->ns_flag & SLP_VALID) { 564 if ((slp->ns_flag & SLP_NEEDQ) != 0) { 565 nfsrv_rcv(slp->ns_so, (void *)slp, 566 M_WAIT); 567 } 568 if ((slp->ns_flag & SLP_DISCONN) != 0) { 569 nfsrv_zapsock(slp); 570 } 571 error = nfsrv_dorec(slp, nfsd, &nd); 572 getmicrotime(&tv); 573 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 574 (u_quad_t)tv.tv_usec; 575 if (error && LIST_FIRST(&slp->ns_tq) && 576 LIST_FIRST(&slp->ns_tq)->nd_time <= 577 cur_usec) { 578 error = 0; 579 cacherep = RC_DOIT; 580 writes_todo = 1; 581 } else 582 writes_todo = 0; 583 if (error == 0 && slp->ns_rec != NULL) { 584 nfsrv_wakenfsd(slp); 585 } 586 } 587 } else { 588 error = 0; 589 slp = nfsd->nfsd_slp; 590 } 591 KASSERT(slp != NULL); 592 KASSERT(nfsd->nfsd_slp == slp); 593 if (error || (slp->ns_flag & SLP_VALID) == 0) { 594 if (nd) { 595 nfsdreq_free(nd); 596 nd = NULL; 597 } 598 nfsd->nfsd_slp = NULL; 599 nfsrv_slpderef(slp); 600 continue; 601 } 602 sotype = slp->ns_so->so_type; 603 if (nd) { 604 getmicrotime(&nd->nd_starttime); 605 if (nd->nd_nam2) 606 nd->nd_nam = nd->nd_nam2; 607 else 608 nd->nd_nam = slp->ns_nam; 609 610 /* 611 * Check to see if authorization is needed. 612 */ 613 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 614 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 615 nsd->nsd_haddr = mtod(nd->nd_nam, 616 struct sockaddr_in *)->sin_addr.s_addr; 617 nsd->nsd_authlen = nfsd->nfsd_authlen; 618 nsd->nsd_verflen = nfsd->nfsd_verflen; 619 if (!copyout(nfsd->nfsd_authstr, 620 nsd->nsd_authstr, nfsd->nfsd_authlen) && 621 !copyout(nfsd->nfsd_verfstr, 622 nsd->nsd_verfstr, nfsd->nfsd_verflen) && 623 !copyout(nsd, argp, sizeof (*nsd))) { 624 uvm_lwp_rele(l); 625 return (ENEEDAUTH); 626 } 627 cacherep = RC_DROPIT; 628 } else 629 cacherep = nfsrv_getcache(nd, slp, &mreq); 630 631 if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 632 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 633 nd->nd_procnum = NFSPROC_NOOP; 634 nd->nd_repstat = 635 (NFSERR_AUTHERR | AUTH_TOOWEAK); 636 cacherep = RC_DOIT; 637 } 638 } 639 640 /* 641 * Loop to get all the write rpc relies that have been 642 * gathered together. 643 */ 644 do { 645 #ifdef DIAGNOSTIC 646 int lockcount; 647 #endif 648 switch (cacherep) { 649 case RC_DOIT: 650 #ifdef DIAGNOSTIC 651 /* 652 * NFS server procs should neither release 653 * locks already held, nor leave things 654 * locked. Catch this sooner, rather than 655 * later (when we try to relock something we 656 * already have locked). Careful inspection 657 * of the failing routine usually turns up the 658 * lock leak.. once we know what it is.. 659 */ 660 lockcount = l->l_locks; 661 #endif 662 mreq = NULL; 663 netexport_rdlock(); 664 if (writes_todo || nd == NULL || 665 (!(nd->nd_flag & ND_NFSV3) && 666 nd->nd_procnum == NFSPROC_WRITE && 667 nfsrvw_procrastinate > 0)) 668 error = nfsrv_writegather(&nd, slp, 669 l, &mreq); 670 else 671 error = 672 (*(nfsrv3_procs[nd->nd_procnum])) 673 (nd, slp, l, &mreq); 674 netexport_rdunlock(); 675 #ifdef DIAGNOSTIC 676 if (l->l_locks != lockcount) { 677 /* 678 * If you see this panic, audit 679 * nfsrv3_procs[nd->nd_procnum] for 680 * vnode locking errors (usually, it's 681 * due to forgetting to vput() 682 * something). 683 */ 684 #ifdef DEBUG 685 extern void printlockedvnodes(void); 686 printlockedvnodes(); 687 #endif 688 printf("nfsd: locking botch in op %d" 689 " (before %d, after %d)\n", 690 nd ? nd->nd_procnum : -1, 691 lockcount, l->l_locks); 692 } 693 #endif 694 if (mreq == NULL) { 695 if (nd != NULL) { 696 if (nd->nd_nam2) 697 m_free(nd->nd_nam2); 698 if (nd->nd_mrep) 699 m_freem(nd->nd_mrep); 700 } 701 break; 702 } 703 if (error) { 704 nfsstats.srv_errs++; 705 nfsrv_updatecache(nd, false, mreq); 706 if (nd->nd_nam2) 707 m_freem(nd->nd_nam2); 708 break; 709 } 710 nfsstats.srvrpccnt[nd->nd_procnum]++; 711 nfsrv_updatecache(nd, true, mreq); 712 nd->nd_mrep = (struct mbuf *)0; 713 case RC_REPLY: 714 m = mreq; 715 siz = 0; 716 while (m) { 717 siz += m->m_len; 718 m = m->m_next; 719 } 720 if (siz <= 0 || siz > NFS_MAXPACKET) { 721 printf("mbuf siz=%d\n",siz); 722 panic("Bad nfs svc reply"); 723 } 724 m = mreq; 725 m->m_pkthdr.len = siz; 726 m->m_pkthdr.rcvif = (struct ifnet *)0; 727 /* 728 * For stream protocols, prepend a Sun RPC 729 * Record Mark. 730 */ 731 if (sotype == SOCK_STREAM) { 732 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 733 *mtod(m, u_int32_t *) = 734 htonl(0x80000000 | siz); 735 } 736 nd->nd_mreq = m; 737 if (nfsrtton) { 738 nfsd_rt(slp->ns_so->so_type, nd, 739 cacherep); 740 } 741 error = nfsdsock_sendreply(slp, nd); 742 nd = NULL; 743 if (error == EPIPE) 744 nfsrv_zapsock(slp); 745 if (error == EINTR || error == ERESTART) { 746 nfsd->nfsd_slp = NULL; 747 nfsrv_slpderef(slp); 748 goto done; 749 } 750 break; 751 case RC_DROPIT: 752 if (nfsrtton) 753 nfsd_rt(sotype, nd, cacherep); 754 m_freem(nd->nd_mrep); 755 m_freem(nd->nd_nam2); 756 break; 757 } 758 if (nd) { 759 nfsdreq_free(nd); 760 nd = NULL; 761 } 762 763 /* 764 * Check to see if there are outstanding writes that 765 * need to be serviced. 766 */ 767 getmicrotime(&tv); 768 cur_usec = (u_quad_t)tv.tv_sec * 1000000 + 769 (u_quad_t)tv.tv_usec; 770 s = splsoftclock(); 771 if (LIST_FIRST(&slp->ns_tq) && 772 LIST_FIRST(&slp->ns_tq)->nd_time <= cur_usec) { 773 cacherep = RC_DOIT; 774 writes_todo = 1; 775 } else 776 writes_todo = 0; 777 splx(s); 778 } while (writes_todo); 779 if (nfsrv_dorec(slp, nfsd, &nd)) { 780 nfsd->nfsd_slp = NULL; 781 nfsrv_slpderef(slp); 782 } 783 } 784 done: 785 mutex_enter(&nfsd_lock); 786 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 787 mutex_exit(&nfsd_lock); 788 cv_destroy(&nfsd->nfsd_cv); 789 free(nfsd, M_NFSD); 790 nsd->nsd_nfsd = NULL; 791 if (--nfs_numnfsd == 0) 792 nfsrv_init(true); /* Reinitialize everything */ 793 uvm_lwp_rele(l); 794 return (error); 795 } 796 797 /* 798 * Shut down a socket associated with an nfssvc_sock structure. 799 * Should be called with the send lock set, if required. 800 * The trick here is to increment the sref at the start, so that the nfsds 801 * will stop using it and clear ns_flag at the end so that it will not be 802 * reassigned during cleanup. 803 * 804 * called at splsoftnet. 805 */ 806 void 807 nfsrv_zapsock(slp) 808 struct nfssvc_sock *slp; 809 { 810 struct nfsuid *nuidp, *nnuidp; 811 struct nfsrv_descript *nwp, *nnwp; 812 struct socket *so; 813 struct mbuf *m; 814 int s; 815 816 if (nfsdsock_drain(slp)) { 817 return; 818 } 819 mutex_enter(&nfsd_lock); 820 if (slp->ns_flag & SLP_DOREC) { 821 TAILQ_REMOVE(&nfssvc_sockpending, slp, ns_pending); 822 slp->ns_flag &= ~SLP_DOREC; 823 } 824 mutex_exit(&nfsd_lock); 825 826 so = slp->ns_so; 827 KASSERT(so != NULL); 828 so->so_upcall = NULL; 829 so->so_upcallarg = NULL; 830 so->so_rcv.sb_flags &= ~SB_UPCALL; 831 soshutdown(so, SHUT_RDWR); 832 833 if (slp->ns_nam) 834 m_free(slp->ns_nam); 835 m_freem(slp->ns_raw); 836 m = slp->ns_rec; 837 while (m != NULL) { 838 struct mbuf *n; 839 840 n = m->m_nextpkt; 841 m_freem(m); 842 m = n; 843 } 844 for (nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); nuidp != 0; 845 nuidp = nnuidp) { 846 nnuidp = TAILQ_NEXT(nuidp, nu_lru); 847 LIST_REMOVE(nuidp, nu_hash); 848 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 849 if (nuidp->nu_flag & NU_NAM) 850 m_freem(nuidp->nu_nam); 851 free((void *)nuidp, M_NFSUID); 852 } 853 s = splsoftclock(); 854 for (nwp = LIST_FIRST(&slp->ns_tq); nwp; nwp = nnwp) { 855 nnwp = LIST_NEXT(nwp, nd_tq); 856 LIST_REMOVE(nwp, nd_tq); 857 nfsdreq_free(nwp); 858 } 859 splx(s); 860 } 861 862 /* 863 * Derefence a server socket structure. If it has no more references and 864 * is no longer valid, you can throw it away. 865 */ 866 void 867 nfsrv_slpderef(slp) 868 struct nfssvc_sock *slp; 869 { 870 uint32_t ref; 871 872 mutex_enter(&nfsd_lock); 873 KASSERT(slp->ns_sref > 0); 874 ref = --slp->ns_sref; 875 mutex_exit(&nfsd_lock); 876 if (ref == 0 && (slp->ns_flag & SLP_VALID) == 0) { 877 struct file *fp; 878 879 mutex_enter(&nfsd_lock); 880 KASSERT((slp->ns_flag & SLP_DOREC) == 0); 881 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 882 mutex_exit(&nfsd_lock); 883 884 fp = slp->ns_fp; 885 if (fp != NULL) { 886 slp->ns_fp = NULL; 887 KASSERT(fp != NULL); 888 KASSERT(fp->f_data == slp->ns_so); 889 simple_lock(&fp->f_slock); 890 FILE_USE(fp); 891 closef(fp, (struct lwp *)0); 892 slp->ns_so = NULL; 893 } 894 895 nfsrv_sockfree(slp); 896 } 897 } 898 899 /* 900 * Initialize the data structures for the server. 901 * Handshake with any new nfsds starting up to avoid any chance of 902 * corruption. 903 */ 904 void 905 nfsrv_init(terminating) 906 int terminating; 907 { 908 struct nfssvc_sock *slp; 909 910 if (!terminating) { 911 mutex_init(&nfsd_lock, MUTEX_DRIVER, IPL_SOFTNET); 912 cv_init(&nfsd_initcv, "nfsdinit"); 913 } 914 915 mutex_enter(&nfsd_lock); 916 if (nfssvc_sockhead_flag & SLP_INIT) 917 panic("nfsd init"); 918 nfssvc_sockhead_flag |= SLP_INIT; 919 920 if (terminating) { 921 KASSERT(SLIST_EMPTY(&nfsd_idle_head)); 922 KASSERT(TAILQ_EMPTY(&nfsd_head)); 923 while ((slp = TAILQ_FIRST(&nfssvc_sockhead)) != NULL) { 924 mutex_exit(&nfsd_lock); 925 KASSERT(slp->ns_sref == 0); 926 slp->ns_sref++; 927 nfsrv_zapsock(slp); 928 nfsrv_slpderef(slp); 929 mutex_enter(&nfsd_lock); 930 } 931 KASSERT(TAILQ_EMPTY(&nfssvc_sockpending)); 932 mutex_exit(&nfsd_lock); 933 nfsrv_cleancache(); /* And clear out server cache */ 934 } else { 935 mutex_exit(&nfsd_lock); 936 nfs_pub.np_valid = 0; 937 } 938 939 TAILQ_INIT(&nfssvc_sockhead); 940 TAILQ_INIT(&nfssvc_sockpending); 941 942 TAILQ_INIT(&nfsd_head); 943 SLIST_INIT(&nfsd_idle_head); 944 nfsd_head_flag &= ~NFSD_CHECKSLP; 945 946 nfs_udpsock = nfsrv_sockalloc(); 947 948 #ifdef INET6 949 nfs_udp6sock = nfsrv_sockalloc(); 950 #endif 951 952 #ifdef ISO 953 nfs_cltpsock = nfsrv_sockalloc(); 954 #endif 955 956 mutex_enter(&nfsd_lock); 957 nfssvc_sockhead_flag &= ~SLP_INIT; 958 cv_broadcast(&nfsd_initcv); 959 mutex_exit(&nfsd_lock); 960 } 961 962 /* 963 * Add entries to the server monitor log. 964 */ 965 static void 966 nfsd_rt(sotype, nd, cacherep) 967 int sotype; 968 struct nfsrv_descript *nd; 969 int cacherep; 970 { 971 struct timeval tv; 972 struct drt *rt; 973 974 rt = &nfsdrt.drt[nfsdrt.pos]; 975 if (cacherep == RC_DOIT) 976 rt->flag = 0; 977 else if (cacherep == RC_REPLY) 978 rt->flag = DRT_CACHEREPLY; 979 else 980 rt->flag = DRT_CACHEDROP; 981 if (sotype == SOCK_STREAM) 982 rt->flag |= DRT_TCP; 983 if (nd->nd_flag & ND_NFSV3) 984 rt->flag |= DRT_NFSV3; 985 rt->proc = nd->nd_procnum; 986 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 987 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 988 else 989 rt->ipadr = INADDR_ANY; 990 getmicrotime(&tv); 991 rt->resptime = ((tv.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 992 (tv.tv_usec - nd->nd_starttime.tv_usec); 993 rt->tstamp = tv; 994 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 995 } 996 #endif /* NFSSERVER */ 997 998 #ifdef NFS 999 1000 int nfs_defect = 0; 1001 /* 1002 * Asynchronous I/O threads for client nfs. 1003 * They do read-ahead and write-behind operations on the block I/O cache. 1004 * Never returns unless it fails or gets killed. 1005 */ 1006 1007 static void 1008 nfssvc_iod(void *arg) 1009 { 1010 struct lwp *l = curlwp; 1011 struct buf *bp; 1012 int i; 1013 struct nfs_iod *myiod; 1014 struct nfsmount *nmp; 1015 1016 /* 1017 * Assign my position or return error if too many already running 1018 */ 1019 myiod = NULL; 1020 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1021 if (nfs_asyncdaemon[i].nid_lwp == NULL) { 1022 myiod = &nfs_asyncdaemon[i]; 1023 break; 1024 } 1025 if (myiod == NULL) { 1026 goto quit; 1027 } 1028 myiod->nid_lwp = l; 1029 myiod->nid_exiting = false; 1030 nfs_numasync++; 1031 1032 for (;;) { 1033 mutex_enter(&myiod->nid_lock); 1034 while (/*CONSTCOND*/ true) { 1035 nmp = myiod->nid_mount; 1036 if (nmp) { 1037 mutex_enter(&nmp->nm_lock); 1038 if (!TAILQ_EMPTY(&nmp->nm_bufq)) { 1039 mutex_exit(&myiod->nid_lock); 1040 break; 1041 } 1042 nmp->nm_bufqiods--; 1043 mutex_exit(&nmp->nm_lock); 1044 } 1045 myiod->nid_want = true; 1046 myiod->nid_mount = NULL; 1047 if (myiod->nid_exiting) { 1048 goto quit; 1049 } 1050 cv_wait(&myiod->nid_cv, &myiod->nid_lock); 1051 } 1052 1053 while ((bp = TAILQ_FIRST(&nmp->nm_bufq)) != NULL) { 1054 /* Take one off the front of the list */ 1055 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 1056 nmp->nm_bufqlen--; 1057 if (nmp->nm_bufqlen < 2 * nfs_numasync) { 1058 cv_broadcast(&nmp->nm_aiocv); 1059 } 1060 mutex_exit(&nmp->nm_lock); 1061 (void)nfs_doio(bp); 1062 mutex_enter(&nmp->nm_lock); 1063 /* 1064 * If there are more than one iod on this mount, 1065 * then defect so that the iods can be shared out 1066 * fairly between the mounts 1067 */ 1068 if (nfs_defect && nmp->nm_bufqiods > 1) { 1069 myiod->nid_mount = NULL; 1070 nmp->nm_bufqiods--; 1071 break; 1072 } 1073 } 1074 mutex_exit(&nmp->nm_lock); 1075 } 1076 quit: 1077 if (myiod != NULL) { 1078 KASSERT(mutex_owned(&myiod->nid_lock)); 1079 KASSERT(myiod->nid_mount == NULL); 1080 myiod->nid_want = false; 1081 myiod->nid_mount = NULL; 1082 myiod->nid_lwp = NULL; 1083 mutex_exit(&myiod->nid_lock); 1084 nfs_numasync--; 1085 } 1086 1087 kthread_exit(0); 1088 } 1089 1090 void 1091 nfs_iodinit() 1092 { 1093 int i; 1094 1095 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 1096 struct nfs_iod *nid = &nfs_asyncdaemon[i]; 1097 mutex_init(&nid->nid_lock, MUTEX_DEFAULT, IPL_NONE); 1098 cv_init(&nid->nid_cv, "nfsiod"); 1099 } 1100 } 1101 1102 void 1103 nfs_getset_niothreads(set) 1104 int set; 1105 { 1106 int i, have, start; 1107 1108 for (have = 0, i = 0; i < NFS_MAXASYNCDAEMON; i++) 1109 if (nfs_asyncdaemon[i].nid_lwp != NULL) 1110 have++; 1111 1112 if (set) { 1113 /* clamp to sane range */ 1114 nfs_niothreads = max(0, min(nfs_niothreads, NFS_MAXASYNCDAEMON)); 1115 1116 start = nfs_niothreads - have; 1117 1118 while (start > 0) { 1119 kthread_create(PRI_NONE, 0, NULL, nfssvc_iod, NULL, 1120 NULL, "nfsio"); 1121 start--; 1122 } 1123 1124 for (i = 0; (start < 0) && (i < NFS_MAXASYNCDAEMON); i++) { 1125 struct nfs_iod *nid = &nfs_asyncdaemon[i]; 1126 1127 if (nid->nid_lwp != NULL) { 1128 mutex_enter(&nid->nid_lock); 1129 nid->nid_exiting = true; 1130 cv_signal(&nid->nid_cv); 1131 mutex_exit(&nid->nid_lock); 1132 start++; 1133 } 1134 } 1135 } else { 1136 if (nfs_niothreads >= 0) 1137 nfs_niothreads = have; 1138 } 1139 } 1140 1141 /* 1142 * Get an authorization string for the uid by having the mount_nfs sitting 1143 * on this mount point porpous out of the kernel and do it. 1144 */ 1145 int 1146 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1147 struct nfsmount *nmp; 1148 struct nfsreq *rep; 1149 kauth_cred_t cred; 1150 char **auth_str; 1151 int *auth_len; 1152 char *verf_str; 1153 int *verf_len; 1154 NFSKERBKEY_T key; /* return session key */ 1155 { 1156 int error = 0; 1157 1158 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1159 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1160 (void) tsleep((void *)&nmp->nm_authtype, PSOCK, 1161 "nfsauth1", 2 * hz); 1162 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1163 if (error) { 1164 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1165 return (error); 1166 } 1167 } 1168 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1169 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1170 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1171 nmp->nm_verfstr = verf_str; 1172 nmp->nm_verflen = *verf_len; 1173 nmp->nm_authuid = kauth_cred_geteuid(cred); 1174 wakeup((void *)&nmp->nm_authstr); 1175 1176 /* 1177 * And wait for mount_nfs to do its stuff. 1178 */ 1179 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1180 (void) tsleep((void *)&nmp->nm_authlen, PSOCK, 1181 "nfsauth2", 2 * hz); 1182 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1183 } 1184 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1185 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1186 error = EAUTH; 1187 } 1188 if (error) 1189 free((void *)*auth_str, M_TEMP); 1190 else { 1191 *auth_len = nmp->nm_authlen; 1192 *verf_len = nmp->nm_verflen; 1193 memcpy(key, nmp->nm_key, sizeof (NFSKERBKEY_T)); 1194 } 1195 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1196 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1197 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1198 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1199 wakeup((void *)&nmp->nm_authtype); 1200 } 1201 return (error); 1202 } 1203 1204 /* 1205 * Get a nickname authenticator and verifier. 1206 */ 1207 int 1208 nfs_getnickauth(struct nfsmount *nmp, kauth_cred_t cred, char **auth_str, 1209 int *auth_len, char *verf_str, int verf_len) 1210 { 1211 struct timeval ktvin, ktvout, tv; 1212 struct nfsuid *nuidp; 1213 u_int32_t *nickp, *verfp; 1214 1215 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1216 1217 #ifdef DIAGNOSTIC 1218 if (verf_len < (4 * NFSX_UNSIGNED)) 1219 panic("nfs_getnickauth verf too small"); 1220 #endif 1221 LIST_FOREACH(nuidp, NMUIDHASH(nmp, kauth_cred_geteuid(cred)), nu_hash) { 1222 if (kauth_cred_geteuid(nuidp->nu_cr) == kauth_cred_geteuid(cred)) 1223 break; 1224 } 1225 if (!nuidp || nuidp->nu_expire < time_second) 1226 return (EACCES); 1227 1228 /* 1229 * Move to the end of the lru list (end of lru == most recently used). 1230 */ 1231 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1232 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1233 1234 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1235 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1236 *nickp = txdr_unsigned(nuidp->nu_nickname); 1237 *auth_str = (char *)nickp; 1238 *auth_len = 2 * NFSX_UNSIGNED; 1239 1240 /* 1241 * Now we must encrypt the verifier and package it up. 1242 */ 1243 verfp = (u_int32_t *)verf_str; 1244 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1245 getmicrotime(&tv); 1246 if (tv.tv_sec > nuidp->nu_timestamp.tv_sec || 1247 (tv.tv_sec == nuidp->nu_timestamp.tv_sec && 1248 tv.tv_usec > nuidp->nu_timestamp.tv_usec)) 1249 nuidp->nu_timestamp = tv; 1250 else 1251 nuidp->nu_timestamp.tv_usec++; 1252 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1253 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1254 1255 /* 1256 * Now encrypt the timestamp verifier in ecb mode using the session 1257 * key. 1258 */ 1259 #ifdef NFSKERB 1260 XXX 1261 #endif 1262 1263 *verfp++ = ktvout.tv_sec; 1264 *verfp++ = ktvout.tv_usec; 1265 *verfp = 0; 1266 return (0); 1267 } 1268 1269 /* 1270 * Save the current nickname in a hash list entry on the mount point. 1271 */ 1272 int 1273 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1274 struct nfsmount *nmp; 1275 kauth_cred_t cred; 1276 int len; 1277 NFSKERBKEY_T key; 1278 struct mbuf **mdp; 1279 char **dposp; 1280 struct mbuf *mrep; 1281 { 1282 struct nfsuid *nuidp; 1283 u_int32_t *tl; 1284 int32_t t1; 1285 struct mbuf *md = *mdp; 1286 struct timeval ktvin, ktvout; 1287 u_int32_t nick; 1288 char *dpos = *dposp, *cp2; 1289 int deltasec, error = 0; 1290 1291 memset(&ktvout, 0, sizeof ktvout); /* XXX gcc */ 1292 1293 if (len == (3 * NFSX_UNSIGNED)) { 1294 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1295 ktvin.tv_sec = *tl++; 1296 ktvin.tv_usec = *tl++; 1297 nick = fxdr_unsigned(u_int32_t, *tl); 1298 1299 /* 1300 * Decrypt the timestamp in ecb mode. 1301 */ 1302 #ifdef NFSKERB 1303 XXX 1304 #endif 1305 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1306 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1307 deltasec = time_second - ktvout.tv_sec; 1308 if (deltasec < 0) 1309 deltasec = -deltasec; 1310 /* 1311 * If ok, add it to the hash list for the mount point. 1312 */ 1313 if (deltasec <= NFS_KERBCLOCKSKEW) { 1314 if (nmp->nm_numuids < nuidhash_max) { 1315 nmp->nm_numuids++; 1316 nuidp = (struct nfsuid *) 1317 malloc(sizeof (struct nfsuid), M_NFSUID, 1318 M_WAITOK); 1319 } else { 1320 nuidp = TAILQ_FIRST(&nmp->nm_uidlruhead); 1321 LIST_REMOVE(nuidp, nu_hash); 1322 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1323 nu_lru); 1324 } 1325 nuidp->nu_flag = 0; 1326 kauth_cred_seteuid(nuidp->nu_cr, kauth_cred_geteuid(cred)); 1327 nuidp->nu_expire = time_second + NFS_KERBTTL; 1328 nuidp->nu_timestamp = ktvout; 1329 nuidp->nu_nickname = nick; 1330 memcpy(nuidp->nu_key, key, sizeof (NFSKERBKEY_T)); 1331 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1332 nu_lru); 1333 LIST_INSERT_HEAD(NMUIDHASH(nmp, kauth_cred_geteuid(cred)), 1334 nuidp, nu_hash); 1335 } 1336 } else 1337 nfsm_adv(nfsm_rndup(len)); 1338 nfsmout: 1339 *mdp = md; 1340 *dposp = dpos; 1341 return (error); 1342 } 1343 #endif /* NFS */ 1344
Indexes created Wed Oct 22 00:09:40 GMT 2025