nfs_syscalls.c revision 1.88
1 /* $NetBSD: nfs_syscalls.c,v 1.88 2006/01/05 11:22:56 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 1.88 2006/01/05 11:22:56 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 69 #include <sys/sa.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/nqnfs.h> 86 #include <nfs/nfsrtt.h> 87 #include <nfs/nfs_var.h> 88 89 /* Global defs. */ 90 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *, 91 struct nfssvc_sock *, 92 struct lwp *, struct mbuf **)); 93 extern time_t nqnfsstarttime; 94 extern int nfsrvw_procrastinate; 95 96 struct nfssvc_sock *nfs_udpsock; 97 #ifdef ISO 98 struct nfssvc_sock *nfs_cltpsock; 99 #endif 100 #ifdef INET6 101 struct nfssvc_sock *nfs_udp6sock; 102 #endif 103 int nuidhash_max = NFS_MAXUIDHASH; 104 int nfsd_waiting = 0; 105 #ifdef NFSSERVER 106 static int nfs_numnfsd = 0; 107 static int notstarted = 1; 108 static int modify_flag = 0; 109 static struct nfsdrt nfsdrt; 110 #endif 111 112 #ifdef NFSSERVER 113 struct simplelock nfsd_slock = SIMPLELOCK_INITIALIZER; 114 struct nfssvc_sockhead nfssvc_sockhead; 115 struct nfssvc_sockhead nfssvc_sockpending; 116 struct nfsdhead nfsd_head; 117 struct nfsdidlehead nfsd_idle_head; 118 119 int nfssvc_sockhead_flag; 120 int nfsd_head_flag; 121 #endif 122 123 MALLOC_DEFINE(M_NFSUID, "NFS uid", "Nfs uid mapping structure"); 124 125 #ifdef NFS 126 struct nfs_iod nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 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(l, v, retval) 150 struct lwp *l; 151 void *v; 152 register_t *retval; 153 { 154 struct sys_nfssvc_args /* { 155 syscallarg(int) flag; 156 syscallarg(caddr_t) argp; 157 } */ *uap = v; 158 struct proc *p = l->l_proc; 159 int error; 160 #ifdef NFS 161 struct nameidata nd; 162 struct nfsmount *nmp; 163 struct nfsd_cargs ncd; 164 #endif 165 #ifdef NFSSERVER 166 int s; 167 struct file *fp; 168 struct mbuf *nam; 169 struct nfsd_args nfsdarg; 170 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 171 struct nfsd *nfsd; 172 struct nfssvc_sock *slp; 173 struct nfsuid *nuidp; 174 #endif 175 176 /* 177 * Must be super user 178 */ 179 error = suser(p->p_ucred, &p->p_acflag); 180 if (error) 181 return (error); 182 183 /* Initialize NFS server / client shared data. */ 184 nfs_init(); 185 186 #ifdef NFSSERVER 187 s = splsoftnet(); 188 simple_lock(&nfsd_slock); 189 while (nfssvc_sockhead_flag & SLP_INIT) { 190 nfssvc_sockhead_flag |= SLP_WANTINIT; 191 (void) ltsleep(&nfssvc_sockhead, PSOCK, "nfsd init", 0, 192 &nfsd_slock); 193 } 194 simple_unlock(&nfsd_slock); 195 splx(s); 196 #endif 197 if (SCARG(uap, flag) & NFSSVC_BIOD) { 198 #if defined(NFS) && defined(COMPAT_14) 199 error = nfssvc_iod(l); 200 #else 201 error = ENOSYS; 202 #endif 203 } else if (SCARG(uap, flag) & NFSSVC_MNTD) { 204 #ifndef NFS 205 error = ENOSYS; 206 #else 207 error = copyin(SCARG(uap, argp), (caddr_t)&ncd, sizeof (ncd)); 208 if (error) 209 return (error); 210 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, 211 ncd.ncd_dirp, l); 212 error = namei(&nd); 213 if (error) 214 return (error); 215 if ((nd.ni_vp->v_flag & VROOT) == 0) 216 error = EINVAL; 217 nmp = VFSTONFS(nd.ni_vp->v_mount); 218 vput(nd.ni_vp); 219 if (error) 220 return (error); 221 if ((nmp->nm_iflag & NFSMNT_MNTD) && 222 (SCARG(uap, flag) & NFSSVC_GOTAUTH) == 0) 223 return (0); 224 nmp->nm_iflag |= NFSMNT_MNTD; 225 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, SCARG(uap, flag), 226 SCARG(uap, argp), l); 227 #endif /* NFS */ 228 } else if (SCARG(uap, flag) & NFSSVC_ADDSOCK) { 229 #ifndef NFSSERVER 230 error = ENOSYS; 231 #else 232 error = copyin(SCARG(uap, argp), (caddr_t)&nfsdarg, 233 sizeof(nfsdarg)); 234 if (error) 235 return (error); 236 /* getsock() will use the descriptor for us */ 237 error = getsock(p->p_fd, nfsdarg.sock, &fp); 238 if (error) 239 return (error); 240 /* 241 * Get the client address for connected sockets. 242 */ 243 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 244 nam = (struct mbuf *)0; 245 else { 246 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen, 247 MT_SONAME); 248 if (error) { 249 FILE_UNUSE(fp, NULL); 250 return (error); 251 } 252 } 253 error = nfssvc_addsock(fp, nam); 254 FILE_UNUSE(fp, NULL); 255 #endif /* !NFSSERVER */ 256 } else if (SCARG(uap, flag) & NFSSVC_SETEXPORTSLIST) { 257 #ifndef NFSSERVER 258 error = ENOSYS; 259 #else 260 struct export_args *args; 261 struct mountd_exports_list mel; 262 263 error = copyin(SCARG(uap, argp), &mel, sizeof(mel)); 264 if (error != 0) 265 return error; 266 267 args = (struct export_args *)malloc(mel.mel_nexports * 268 sizeof(struct export_args), M_TEMP, M_WAITOK); 269 error = copyin(mel.mel_exports, args, mel.mel_nexports * 270 sizeof(struct export_args)); 271 if (error != 0) { 272 free(args, M_TEMP); 273 return error; 274 } 275 mel.mel_exports = args; 276 277 error = mountd_set_exports_list(&mel, l); 278 279 free(args, M_TEMP); 280 #endif /* !NFSSERVER */ 281 } else { 282 #ifndef NFSSERVER 283 error = ENOSYS; 284 #else 285 error = copyin(SCARG(uap, argp), (caddr_t)nsd, sizeof (*nsd)); 286 if (error) 287 return (error); 288 if ((SCARG(uap, flag) & NFSSVC_AUTHIN) && 289 ((nfsd = nsd->nsd_nfsd)) != NULL && 290 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 291 slp = nfsd->nfsd_slp; 292 293 /* 294 * First check to see if another nfsd has already 295 * added this credential. 296 */ 297 LIST_FOREACH(nuidp, NUIDHASH(slp,nsd->nsd_cr.cr_uid), 298 nu_hash) { 299 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid && 300 (!nfsd->nfsd_nd->nd_nam2 || 301 netaddr_match(NU_NETFAM(nuidp), 302 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 303 break; 304 } 305 if (nuidp) { 306 nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr); 307 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 308 } else { 309 /* 310 * Nope, so we will. 311 */ 312 if (slp->ns_numuids < nuidhash_max) { 313 slp->ns_numuids++; 314 nuidp = (struct nfsuid *) 315 malloc(sizeof (struct nfsuid), M_NFSUID, 316 M_WAITOK); 317 } else 318 nuidp = (struct nfsuid *)0; 319 if ((slp->ns_flag & SLP_VALID) == 0) { 320 if (nuidp) 321 free((caddr_t)nuidp, M_NFSUID); 322 } else { 323 if (nuidp == (struct nfsuid *)0) { 324 nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); 325 LIST_REMOVE(nuidp, nu_hash); 326 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 327 nu_lru); 328 if (nuidp->nu_flag & NU_NAM) 329 m_freem(nuidp->nu_nam); 330 } 331 nuidp->nu_flag = 0; 332 crcvt(&nuidp->nu_cr, &nsd->nsd_cr); 333 if (nuidp->nu_cr.cr_ngroups > NGROUPS) 334 nuidp->nu_cr.cr_ngroups = NGROUPS; 335 nuidp->nu_cr.cr_ref = 1; 336 nuidp->nu_timestamp = nsd->nsd_timestamp; 337 nuidp->nu_expire = time.tv_sec + nsd->nsd_ttl; 338 /* 339 * and save the session key in nu_key. 340 */ 341 memcpy(nuidp->nu_key, nsd->nsd_key, 342 sizeof(nsd->nsd_key)); 343 if (nfsd->nfsd_nd->nd_nam2) { 344 struct sockaddr_in *saddr; 345 346 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 347 struct sockaddr_in *); 348 switch (saddr->sin_family) { 349 case AF_INET: 350 nuidp->nu_flag |= NU_INETADDR; 351 nuidp->nu_inetaddr = 352 saddr->sin_addr.s_addr; 353 break; 354 case AF_ISO: 355 default: 356 nuidp->nu_flag |= NU_NAM; 357 nuidp->nu_nam = m_copym( 358 nfsd->nfsd_nd->nd_nam2, 0, 359 M_COPYALL, M_WAIT); 360 break; 361 }; 362 } 363 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 364 nu_lru); 365 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 366 nuidp, nu_hash); 367 nfsrv_setcred(&nuidp->nu_cr, 368 &nfsd->nfsd_nd->nd_cr); 369 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 370 } 371 } 372 } 373 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 374 (nfsd = nsd->nsd_nfsd)) 375 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 376 error = nfssvc_nfsd(nsd, SCARG(uap, argp), l); 377 #endif /* !NFSSERVER */ 378 } 379 if (error == EINTR || error == ERESTART) 380 error = 0; 381 return (error); 382 } 383 384 #ifdef NFSSERVER 385 MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure"); 386 MALLOC_DEFINE(M_NFSSVC, "NFS srvsock", "Nfs server structure"); 387 struct pool nfs_srvdesc_pool; 388 389 static struct nfssvc_sock * 390 nfsrv_sockalloc() 391 { 392 struct nfssvc_sock *slp; 393 int s; 394 395 slp = (struct nfssvc_sock *) 396 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 397 memset(slp, 0, sizeof (struct nfssvc_sock)); 398 simple_lock_init(&slp->ns_lock); 399 TAILQ_INIT(&slp->ns_uidlruhead); 400 LIST_INIT(&slp->ns_tq); 401 SIMPLEQ_INIT(&slp->ns_sendq); 402 s = splsoftnet(); 403 simple_lock(&nfsd_slock); 404 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 405 simple_unlock(&nfsd_slock); 406 splx(s); 407 408 return slp; 409 } 410 411 static void 412 nfsrv_sockfree(struct nfssvc_sock *slp) 413 { 414 415 KASSERT(slp->ns_so == NULL); 416 KASSERT(slp->ns_fp == NULL); 417 KASSERT((slp->ns_flag & SLP_VALID) == 0); 418 free(slp, M_NFSSVC); 419 } 420 421 /* 422 * Adds a socket to the list for servicing by nfsds. 423 */ 424 int 425 nfssvc_addsock(fp, mynam) 426 struct file *fp; 427 struct mbuf *mynam; 428 { 429 struct mbuf *m; 430 int siz; 431 struct nfssvc_sock *slp; 432 struct socket *so; 433 struct nfssvc_sock *tslp; 434 int error, s; 435 436 so = (struct socket *)fp->f_data; 437 tslp = (struct nfssvc_sock *)0; 438 /* 439 * Add it to the list, as required. 440 */ 441 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 442 #ifdef INET6 443 if (so->so_proto->pr_domain->dom_family == AF_INET6) 444 tslp = nfs_udp6sock; 445 else 446 #endif 447 tslp = nfs_udpsock; 448 if (tslp->ns_flag & SLP_VALID) { 449 m_freem(mynam); 450 return (EPERM); 451 } 452 #ifdef ISO 453 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 454 tslp = nfs_cltpsock; 455 if (tslp->ns_flag & SLP_VALID) { 456 m_freem(mynam); 457 return (EPERM); 458 } 459 #endif /* ISO */ 460 } 461 if (so->so_type == SOCK_STREAM) 462 siz = NFS_MAXPACKET + sizeof (u_long); 463 else 464 siz = NFS_MAXPACKET; 465 error = soreserve(so, siz, siz); 466 if (error) { 467 m_freem(mynam); 468 return (error); 469 } 470 471 /* 472 * Set protocol specific options { for now TCP only } and 473 * reserve some space. For datagram sockets, this can get called 474 * repeatedly for the same socket, but that isn't harmful. 475 */ 476 if (so->so_type == SOCK_STREAM) { 477 m = m_get(M_WAIT, MT_SOOPTS); 478 MCLAIM(m, &nfs_mowner); 479 *mtod(m, int32_t *) = 1; 480 m->m_len = sizeof(int32_t); 481 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m); 482 } 483 if ((so->so_proto->pr_domain->dom_family == AF_INET 484 #ifdef INET6 485 || so->so_proto->pr_domain->dom_family == AF_INET6 486 #endif 487 ) && 488 so->so_proto->pr_protocol == IPPROTO_TCP) { 489 m = m_get(M_WAIT, MT_SOOPTS); 490 MCLAIM(m, &nfs_mowner); 491 *mtod(m, int32_t *) = 1; 492 m->m_len = sizeof(int32_t); 493 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m); 494 } 495 so->so_rcv.sb_flags &= ~SB_NOINTR; 496 so->so_rcv.sb_timeo = 0; 497 so->so_snd.sb_flags &= ~SB_NOINTR; 498 so->so_snd.sb_timeo = 0; 499 if (tslp) 500 slp = tslp; 501 else { 502 slp = nfsrv_sockalloc(); 503 } 504 slp->ns_so = so; 505 slp->ns_nam = mynam; 506 fp->f_count++; 507 slp->ns_fp = fp; 508 s = splsoftnet(); 509 so->so_upcallarg = (caddr_t)slp; 510 so->so_upcall = nfsrv_rcv; 511 so->so_rcv.sb_flags |= SB_UPCALL; 512 slp->ns_flag = (SLP_VALID | SLP_NEEDQ); 513 nfsrv_wakenfsd(slp); 514 splx(s); 515 return (0); 516 } 517 518 /* 519 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 520 * until it is killed by a signal. 521 */ 522 int 523 nfssvc_nfsd(nsd, argp, l) 524 struct nfsd_srvargs *nsd; 525 caddr_t argp; 526 struct lwp *l; 527 { 528 struct mbuf *m; 529 int siz; 530 struct nfssvc_sock *slp; 531 struct nfsd *nfsd = nsd->nsd_nfsd; 532 struct nfsrv_descript *nd = NULL; 533 struct mbuf *mreq; 534 int error = 0, cacherep, s, sotype, writes_todo; 535 u_quad_t cur_usec; 536 struct proc *p = l->l_proc; 537 538 #ifndef nolint 539 cacherep = RC_DOIT; 540 writes_todo = 0; 541 #endif 542 s = splsoftnet(); 543 if (nfsd == (struct nfsd *)0) { 544 nsd->nsd_nfsd = nfsd = (struct nfsd *) 545 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 546 memset((caddr_t)nfsd, 0, sizeof (struct nfsd)); 547 nfsd->nfsd_procp = p; 548 simple_lock(&nfsd_slock); 549 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 550 nfs_numnfsd++; 551 simple_unlock(&nfsd_slock); 552 } 553 PHOLD(l); 554 /* 555 * Loop getting rpc requests until SIGKILL. 556 */ 557 for (;;) { 558 if (nfsd->nfsd_slp == NULL) { 559 simple_lock(&nfsd_slock); 560 while (nfsd->nfsd_slp == NULL && 561 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 562 SLIST_INSERT_HEAD(&nfsd_idle_head, nfsd, 563 nfsd_idle); 564 nfsd_waiting++; 565 error = ltsleep(nfsd, PSOCK | PCATCH, "nfsd", 566 0, &nfsd_slock); 567 nfsd_waiting--; 568 if (error) { 569 slp = nfsd->nfsd_slp; 570 nfsd->nfsd_slp = NULL; 571 if (!slp) 572 SLIST_REMOVE(&nfsd_idle_head, 573 nfsd, nfsd, nfsd_idle); 574 simple_unlock(&nfsd_slock); 575 if (slp) { 576 nfsrv_wakenfsd(slp); 577 nfsrv_slpderef(slp); 578 } 579 goto done; 580 } 581 } 582 if (nfsd->nfsd_slp == NULL && 583 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 584 slp = TAILQ_FIRST(&nfssvc_sockpending); 585 if (slp) { 586 KASSERT((slp->ns_flag & 587 (SLP_VALID | SLP_DOREC)) 588 == (SLP_VALID | SLP_DOREC)); 589 TAILQ_REMOVE(&nfssvc_sockpending, slp, 590 ns_pending); 591 slp->ns_flag &= ~SLP_DOREC; 592 slp->ns_sref++; 593 nfsd->nfsd_slp = slp; 594 } else 595 nfsd_head_flag &= ~NFSD_CHECKSLP; 596 } 597 simple_unlock(&nfsd_slock); 598 if ((slp = nfsd->nfsd_slp) == NULL) 599 continue; 600 if (slp->ns_flag & SLP_VALID) { 601 if (slp->ns_flag & SLP_DISCONN) 602 nfsrv_zapsock(slp); 603 else if ((slp->ns_flag & SLP_NEEDQ) != 0) { 604 nfsrv_rcv(slp->ns_so, (void *)slp, 605 M_WAIT); 606 } 607 error = nfsrv_dorec(slp, nfsd, &nd); 608 cur_usec = (u_quad_t)time.tv_sec * 1000000 + 609 (u_quad_t)time.tv_usec; 610 if (error && LIST_FIRST(&slp->ns_tq) && 611 LIST_FIRST(&slp->ns_tq)->nd_time <= 612 cur_usec) { 613 error = 0; 614 cacherep = RC_DOIT; 615 writes_todo = 1; 616 } else 617 writes_todo = 0; 618 if (error == 0 && slp->ns_rec != NULL) { 619 nfsrv_wakenfsd(slp); 620 } 621 } 622 } else { 623 error = 0; 624 slp = nfsd->nfsd_slp; 625 } 626 if (error || (slp->ns_flag & SLP_VALID) == 0) { 627 if (nd) { 628 pool_put(&nfs_srvdesc_pool, nd); 629 nd = NULL; 630 } 631 nfsd->nfsd_slp = NULL; 632 nfsrv_slpderef(slp); 633 continue; 634 } 635 splx(s); 636 sotype = slp->ns_so->so_type; 637 if (nd) { 638 nd->nd_starttime = time; 639 if (nd->nd_nam2) 640 nd->nd_nam = nd->nd_nam2; 641 else 642 nd->nd_nam = slp->ns_nam; 643 644 /* 645 * Check to see if authorization is needed. 646 */ 647 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 648 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 649 nsd->nsd_haddr = mtod(nd->nd_nam, 650 struct sockaddr_in *)->sin_addr.s_addr; 651 nsd->nsd_authlen = nfsd->nfsd_authlen; 652 nsd->nsd_verflen = nfsd->nfsd_verflen; 653 if (!copyout(nfsd->nfsd_authstr, 654 nsd->nsd_authstr, nfsd->nfsd_authlen) && 655 !copyout(nfsd->nfsd_verfstr, 656 nsd->nsd_verfstr, nfsd->nfsd_verflen) && 657 !copyout(nsd, argp, sizeof (*nsd))) { 658 PRELE(l); 659 return (ENEEDAUTH); 660 } 661 cacherep = RC_DROPIT; 662 } else 663 cacherep = nfsrv_getcache(nd, slp, &mreq); 664 665 /* 666 * Check for just starting up for NQNFS and send 667 * fake "try again later" replies to the NQNFS clients. 668 */ 669 if (notstarted && nqnfsstarttime <= time.tv_sec) { 670 if (modify_flag) { 671 nqnfsstarttime = 672 time.tv_sec + nqsrv_writeslack; 673 modify_flag = 0; 674 } else 675 notstarted = 0; 676 } 677 if (notstarted) { 678 if ((nd->nd_flag & ND_NQNFS) == 0) 679 cacherep = RC_DROPIT; 680 else if (nd->nd_procnum != NFSPROC_WRITE) { 681 nd->nd_procnum = NFSPROC_NOOP; 682 nd->nd_repstat = NQNFS_TRYLATER; 683 cacherep = RC_DOIT; 684 } else 685 modify_flag = 1; 686 } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 687 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 688 nd->nd_procnum = NFSPROC_NOOP; 689 nd->nd_repstat = 690 (NFSERR_AUTHERR | AUTH_TOOWEAK); 691 cacherep = RC_DOIT; 692 } 693 } 694 695 /* 696 * Loop to get all the write rpc relies that have been 697 * gathered together. 698 */ 699 do { 700 #ifdef DIAGNOSTIC 701 int lockcount; 702 #endif 703 switch (cacherep) { 704 case RC_DOIT: 705 #ifdef DIAGNOSTIC 706 /* 707 * NFS server procs should neither release 708 * locks already held, nor leave things 709 * locked. Catch this sooner, rather than 710 * later (when we try to relock something we 711 * already have locked). Careful inspection 712 * of the failing routine usually turns up the 713 * lock leak.. once we know what it is.. 714 */ 715 lockcount = l->l_locks; 716 #endif 717 mreq = NULL; 718 netexport_rdlock(); 719 if (writes_todo || (!(nd->nd_flag & ND_NFSV3) && 720 nd->nd_procnum == NFSPROC_WRITE && 721 nfsrvw_procrastinate > 0 && !notstarted)) 722 error = nfsrv_writegather(&nd, slp, 723 l, &mreq); 724 else 725 error = 726 (*(nfsrv3_procs[nd->nd_procnum])) 727 (nd, slp, l, &mreq); 728 netexport_rdunlock(); 729 #ifdef DIAGNOSTIC 730 if (l->l_locks != lockcount) { 731 /* 732 * If you see this panic, audit 733 * nfsrv3_procs[nd->nd_procnum] for 734 * vnode locking errors (usually, it's 735 * due to forgetting to vput() 736 * something). 737 */ 738 #ifdef DEBUG 739 extern void printlockedvnodes(void); 740 printlockedvnodes(); 741 #endif 742 printf("nfsd: locking botch in op %d" 743 " (before %d, after %d)\n", 744 nd ? nd->nd_procnum : -1, 745 lockcount, l->l_locks); 746 } 747 #endif 748 if (mreq == NULL) { 749 if (nd != NULL) { 750 if (nd->nd_nam2) 751 m_free(nd->nd_nam2); 752 if (nd->nd_mrep) 753 m_freem(nd->nd_mrep); 754 } 755 break; 756 } 757 if (error) { 758 if (nd->nd_procnum != NQNFSPROC_VACATED) 759 nfsstats.srv_errs++; 760 nfsrv_updatecache(nd, FALSE, mreq); 761 if (nd->nd_nam2) 762 m_freem(nd->nd_nam2); 763 break; 764 } 765 nfsstats.srvrpccnt[nd->nd_procnum]++; 766 nfsrv_updatecache(nd, TRUE, mreq); 767 nd->nd_mrep = (struct mbuf *)0; 768 case RC_REPLY: 769 m = mreq; 770 siz = 0; 771 while (m) { 772 siz += m->m_len; 773 m = m->m_next; 774 } 775 if (siz <= 0 || siz > NFS_MAXPACKET) { 776 printf("mbuf siz=%d\n",siz); 777 panic("Bad nfs svc reply"); 778 } 779 m = mreq; 780 m->m_pkthdr.len = siz; 781 m->m_pkthdr.rcvif = (struct ifnet *)0; 782 /* 783 * For stream protocols, prepend a Sun RPC 784 * Record Mark. 785 */ 786 if (sotype == SOCK_STREAM) { 787 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 788 *mtod(m, u_int32_t *) = 789 htonl(0x80000000 | siz); 790 } 791 nd->nd_mreq = m; 792 if (nfsrtton) { 793 nfsd_rt(slp->ns_so->so_type, nd, 794 cacherep); 795 } 796 s = splsoftnet(); 797 error = nfsdsock_sendreply(slp, nd); 798 nd = NULL; 799 if (error == EPIPE) 800 nfsrv_zapsock(slp); 801 if (error == EINTR || error == ERESTART) { 802 nfsrv_slpderef(slp); 803 goto done; 804 } 805 splx(s); 806 break; 807 case RC_DROPIT: 808 if (nfsrtton) 809 nfsd_rt(sotype, nd, cacherep); 810 m_freem(nd->nd_mrep); 811 m_freem(nd->nd_nam2); 812 break; 813 } 814 if (nd) { 815 pool_put(&nfs_srvdesc_pool, nd); 816 nd = NULL; 817 } 818 819 /* 820 * Check to see if there are outstanding writes that 821 * need to be serviced. 822 */ 823 cur_usec = (u_quad_t)time.tv_sec * 1000000 + 824 (u_quad_t)time.tv_usec; 825 s = splsoftclock(); 826 if (LIST_FIRST(&slp->ns_tq) && 827 LIST_FIRST(&slp->ns_tq)->nd_time <= cur_usec) { 828 cacherep = RC_DOIT; 829 writes_todo = 1; 830 } else 831 writes_todo = 0; 832 splx(s); 833 } while (writes_todo); 834 s = splsoftnet(); 835 if (nfsrv_dorec(slp, nfsd, &nd)) { 836 nfsd->nfsd_slp = NULL; 837 nfsrv_slpderef(slp); 838 } 839 } 840 done: 841 PRELE(l); 842 simple_lock(&nfsd_slock); 843 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 844 simple_unlock(&nfsd_slock); 845 splx(s); 846 free((caddr_t)nfsd, M_NFSD); 847 nsd->nsd_nfsd = (struct nfsd *)0; 848 if (--nfs_numnfsd == 0) 849 nfsrv_init(TRUE); /* Reinitialize everything */ 850 return (error); 851 } 852 853 /* 854 * Shut down a socket associated with an nfssvc_sock structure. 855 * Should be called with the send lock set, if required. 856 * The trick here is to increment the sref at the start, so that the nfsds 857 * will stop using it and clear ns_flag at the end so that it will not be 858 * reassigned during cleanup. 859 * 860 * called at splsoftnet. 861 */ 862 void 863 nfsrv_zapsock(slp) 864 struct nfssvc_sock *slp; 865 { 866 struct nfsuid *nuidp, *nnuidp; 867 struct nfsrv_descript *nwp, *nnwp; 868 struct socket *so; 869 int s; 870 871 if (nfsdsock_drain(slp)) { 872 return; 873 } 874 simple_lock(&nfsd_slock); 875 if (slp->ns_flag & SLP_DOREC) { 876 TAILQ_REMOVE(&nfssvc_sockpending, slp, ns_pending); 877 } 878 simple_unlock(&nfsd_slock); 879 880 so = slp->ns_so; 881 KASSERT(so != NULL); 882 so->so_upcall = NULL; 883 so->so_upcallarg = NULL; 884 so->so_rcv.sb_flags &= ~SB_UPCALL; 885 soshutdown(so, SHUT_RDWR); 886 887 if (slp->ns_nam) 888 m_free(slp->ns_nam); 889 m_freem(slp->ns_raw); 890 m_freem(slp->ns_rec); 891 for (nuidp = TAILQ_FIRST(&slp->ns_uidlruhead); nuidp != 0; 892 nuidp = nnuidp) { 893 nnuidp = TAILQ_NEXT(nuidp, nu_lru); 894 LIST_REMOVE(nuidp, nu_hash); 895 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 896 if (nuidp->nu_flag & NU_NAM) 897 m_freem(nuidp->nu_nam); 898 free((caddr_t)nuidp, M_NFSUID); 899 } 900 s = splsoftclock(); 901 for (nwp = LIST_FIRST(&slp->ns_tq); nwp; nwp = nnwp) { 902 nnwp = LIST_NEXT(nwp, nd_tq); 903 LIST_REMOVE(nwp, nd_tq); 904 pool_put(&nfs_srvdesc_pool, nwp); 905 } 906 splx(s); 907 } 908 909 /* 910 * Derefence a server socket structure. If it has no more references and 911 * is no longer valid, you can throw it away. 912 */ 913 void 914 nfsrv_slpderef(slp) 915 struct nfssvc_sock *slp; 916 { 917 LOCK_ASSERT(!simple_lock_held(&nfsd_slock)); 918 919 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) { 920 struct file *fp; 921 int s = splsoftnet(); 922 simple_lock(&nfsd_slock); 923 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 924 simple_unlock(&nfsd_slock); 925 splx(s); 926 927 fp = slp->ns_fp; 928 if (fp != NULL) { 929 slp->ns_fp = NULL; 930 KASSERT(fp != NULL); 931 KASSERT(fp->f_data == slp->ns_so); 932 simple_lock(&fp->f_slock); 933 FILE_USE(fp); 934 closef(fp, (struct lwp *)0); 935 slp->ns_so = NULL; 936 } 937 938 nfsrv_sockfree(slp); 939 } 940 } 941 942 /* 943 * Initialize the data structures for the server. 944 * Handshake with any new nfsds starting up to avoid any chance of 945 * corruption. 946 */ 947 void 948 nfsrv_init(terminating) 949 int terminating; 950 { 951 struct nfssvc_sock *slp; 952 int s; 953 954 s = splsoftnet(); 955 simple_lock(&nfsd_slock); 956 if (nfssvc_sockhead_flag & SLP_INIT) 957 panic("nfsd init"); 958 nfssvc_sockhead_flag |= SLP_INIT; 959 960 if (terminating) { 961 while ((slp = TAILQ_FIRST(&nfssvc_sockhead)) != NULL) { 962 simple_unlock(&nfsd_slock); 963 KASSERT(slp->ns_sref == 0); 964 slp->ns_sref++; 965 nfsrv_zapsock(slp); 966 nfsrv_slpderef(slp); 967 simple_lock(&nfsd_slock); 968 } 969 simple_unlock(&nfsd_slock); 970 splx(s); 971 nfsrv_cleancache(); /* And clear out server cache */ 972 } else { 973 simple_unlock(&nfsd_slock); 974 splx(s); 975 nfs_pub.np_valid = 0; 976 } 977 978 TAILQ_INIT(&nfssvc_sockhead); 979 TAILQ_INIT(&nfssvc_sockpending); 980 nfssvc_sockhead_flag &= ~SLP_INIT; 981 982 TAILQ_INIT(&nfsd_head); 983 SLIST_INIT(&nfsd_idle_head); 984 nfsd_head_flag &= ~NFSD_CHECKSLP; 985 986 nfs_udpsock = nfsrv_sockalloc(); 987 988 #ifdef INET6 989 nfs_udp6sock = nfsrv_sockalloc(); 990 #endif 991 992 #ifdef ISO 993 nfs_cltpsock = nfsrv_sockalloc(); 994 #endif 995 996 simple_lock(&nfsd_slock); 997 if (nfssvc_sockhead_flag & SLP_WANTINIT) { 998 nfssvc_sockhead_flag &= ~SLP_WANTINIT; 999 wakeup(&nfssvc_sockhead); 1000 } 1001 simple_unlock(&nfsd_slock); 1002 splx(s); 1003 } 1004 1005 /* 1006 * Add entries to the server monitor log. 1007 */ 1008 static void 1009 nfsd_rt(sotype, nd, cacherep) 1010 int sotype; 1011 struct nfsrv_descript *nd; 1012 int cacherep; 1013 { 1014 struct drt *rt; 1015 1016 rt = &nfsdrt.drt[nfsdrt.pos]; 1017 if (cacherep == RC_DOIT) 1018 rt->flag = 0; 1019 else if (cacherep == RC_REPLY) 1020 rt->flag = DRT_CACHEREPLY; 1021 else 1022 rt->flag = DRT_CACHEDROP; 1023 if (sotype == SOCK_STREAM) 1024 rt->flag |= DRT_TCP; 1025 if (nd->nd_flag & ND_NQNFS) 1026 rt->flag |= DRT_NQNFS; 1027 else if (nd->nd_flag & ND_NFSV3) 1028 rt->flag |= DRT_NFSV3; 1029 rt->proc = nd->nd_procnum; 1030 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 1031 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 1032 else 1033 rt->ipadr = INADDR_ANY; 1034 rt->resptime = ((time.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 1035 (time.tv_usec - nd->nd_starttime.tv_usec); 1036 rt->tstamp = time; 1037 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 1038 } 1039 #endif /* NFSSERVER */ 1040 1041 #ifdef NFS 1042 1043 int nfs_defect = 0; 1044 /* 1045 * Asynchronous I/O threads for client nfs. 1046 * They do read-ahead and write-behind operations on the block I/O cache. 1047 * Never returns unless it fails or gets killed. 1048 */ 1049 1050 int 1051 nfssvc_iod(l) 1052 struct lwp *l; 1053 { 1054 struct buf *bp; 1055 int i; 1056 struct nfs_iod *myiod; 1057 struct nfsmount *nmp; 1058 int error = 0; 1059 struct proc *p = l ? l->l_proc : NULL; 1060 1061 /* 1062 * Assign my position or return error if too many already running 1063 */ 1064 myiod = NULL; 1065 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1066 if (nfs_asyncdaemon[i].nid_proc == NULL) { 1067 myiod = &nfs_asyncdaemon[i]; 1068 break; 1069 } 1070 if (myiod == NULL) 1071 return (EBUSY); 1072 myiod->nid_proc = p; 1073 nfs_numasync++; 1074 PHOLD(l); 1075 /* 1076 * Just loop around doing our stuff until SIGKILL 1077 */ 1078 for (;;) { 1079 while (/*CONSTCOND*/ TRUE) { 1080 simple_lock(&myiod->nid_slock); 1081 nmp = myiod->nid_mount; 1082 if (nmp) { 1083 simple_lock(&nmp->nm_slock); 1084 if (!TAILQ_EMPTY(&nmp->nm_bufq)) { 1085 simple_unlock(&myiod->nid_slock); 1086 break; 1087 } 1088 nmp->nm_bufqiods--; 1089 simple_unlock(&nmp->nm_slock); 1090 } 1091 myiod->nid_want = p; 1092 myiod->nid_mount = NULL; 1093 error = ltsleep(&myiod->nid_want, 1094 PWAIT | PCATCH | PNORELOCK, "nfsidl", 0, 1095 &myiod->nid_slock); 1096 if (error) 1097 goto quit; 1098 } 1099 1100 while ((bp = TAILQ_FIRST(&nmp->nm_bufq)) != NULL) { 1101 /* Take one off the front of the list */ 1102 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 1103 nmp->nm_bufqlen--; 1104 if (nmp->nm_bufqwant && 1105 nmp->nm_bufqlen < 2 * nfs_numasync) { 1106 nmp->nm_bufqwant = FALSE; 1107 wakeup(&nmp->nm_bufq); 1108 } 1109 simple_unlock(&nmp->nm_slock); 1110 (void)nfs_doio(bp); 1111 simple_lock(&nmp->nm_slock); 1112 /* 1113 * If there are more than one iod on this mount, 1114 * then defect so that the iods can be shared out 1115 * fairly between the mounts 1116 */ 1117 if (nfs_defect && nmp->nm_bufqiods > 1) { 1118 myiod->nid_mount = NULL; 1119 nmp->nm_bufqiods--; 1120 break; 1121 } 1122 } 1123 simple_unlock(&nmp->nm_slock); 1124 } 1125 quit: 1126 PRELE(l); 1127 if (nmp) 1128 nmp->nm_bufqiods--; 1129 myiod->nid_want = NULL; 1130 myiod->nid_mount = NULL; 1131 myiod->nid_proc = NULL; 1132 nfs_numasync--; 1133 1134 return error; 1135 } 1136 1137 void 1138 nfs_iodinit() 1139 { 1140 int i; 1141 1142 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1143 simple_lock_init(&nfs_asyncdaemon[i].nid_slock); 1144 } 1145 1146 void 1147 start_nfsio(arg) 1148 void *arg; 1149 { 1150 nfssvc_iod(curlwp); 1151 1152 kthread_exit(0); 1153 } 1154 1155 void 1156 nfs_getset_niothreads(set) 1157 int set; 1158 { 1159 int i, have, start; 1160 1161 for (have = 0, i = 0; i < NFS_MAXASYNCDAEMON; i++) 1162 if (nfs_asyncdaemon[i].nid_proc != NULL) 1163 have++; 1164 1165 if (set) { 1166 /* clamp to sane range */ 1167 nfs_niothreads = max(0, min(nfs_niothreads, NFS_MAXASYNCDAEMON)); 1168 1169 start = nfs_niothreads - have; 1170 1171 while (start > 0) { 1172 kthread_create1(start_nfsio, NULL, NULL, "nfsio"); 1173 start--; 1174 } 1175 1176 for (i = 0; (start < 0) && (i < NFS_MAXASYNCDAEMON); i++) 1177 if (nfs_asyncdaemon[i].nid_proc != NULL) { 1178 psignal(nfs_asyncdaemon[i].nid_proc, SIGKILL); 1179 start++; 1180 } 1181 } else { 1182 if (nfs_niothreads >= 0) 1183 nfs_niothreads = have; 1184 } 1185 } 1186 1187 /* 1188 * Get an authorization string for the uid by having the mount_nfs sitting 1189 * on this mount point porpous out of the kernel and do it. 1190 */ 1191 int 1192 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1193 struct nfsmount *nmp; 1194 struct nfsreq *rep; 1195 struct ucred *cred; 1196 char **auth_str; 1197 int *auth_len; 1198 char *verf_str; 1199 int *verf_len; 1200 NFSKERBKEY_T key; /* return session key */ 1201 { 1202 int error = 0; 1203 1204 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1205 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1206 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK, 1207 "nfsauth1", 2 * hz); 1208 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1209 if (error) { 1210 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1211 return (error); 1212 } 1213 } 1214 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1215 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1216 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1217 nmp->nm_verfstr = verf_str; 1218 nmp->nm_verflen = *verf_len; 1219 nmp->nm_authuid = cred->cr_uid; 1220 wakeup((caddr_t)&nmp->nm_authstr); 1221 1222 /* 1223 * And wait for mount_nfs to do its stuff. 1224 */ 1225 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1226 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK, 1227 "nfsauth2", 2 * hz); 1228 error = nfs_sigintr(nmp, rep, rep->r_lwp); 1229 } 1230 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1231 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1232 error = EAUTH; 1233 } 1234 if (error) 1235 free((caddr_t)*auth_str, M_TEMP); 1236 else { 1237 *auth_len = nmp->nm_authlen; 1238 *verf_len = nmp->nm_verflen; 1239 memcpy(key, nmp->nm_key, sizeof (NFSKERBKEY_T)); 1240 } 1241 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1242 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1243 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1244 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1245 wakeup((caddr_t)&nmp->nm_authtype); 1246 } 1247 return (error); 1248 } 1249 1250 /* 1251 * Get a nickname authenticator and verifier. 1252 */ 1253 int 1254 nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len) 1255 struct nfsmount *nmp; 1256 struct ucred *cred; 1257 char **auth_str; 1258 int *auth_len; 1259 char *verf_str; 1260 int verf_len; 1261 { 1262 struct nfsuid *nuidp; 1263 u_int32_t *nickp, *verfp; 1264 struct timeval ktvin, ktvout; 1265 1266 #ifdef DIAGNOSTIC 1267 if (verf_len < (4 * NFSX_UNSIGNED)) 1268 panic("nfs_getnickauth verf too small"); 1269 #endif 1270 LIST_FOREACH(nuidp, NMUIDHASH(nmp, cred->cr_uid), nu_hash) { 1271 if (nuidp->nu_cr.cr_uid == cred->cr_uid) 1272 break; 1273 } 1274 if (!nuidp || nuidp->nu_expire < time.tv_sec) 1275 return (EACCES); 1276 1277 /* 1278 * Move to the end of the lru list (end of lru == most recently used). 1279 */ 1280 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1281 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1282 1283 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1284 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1285 *nickp = txdr_unsigned(nuidp->nu_nickname); 1286 *auth_str = (char *)nickp; 1287 *auth_len = 2 * NFSX_UNSIGNED; 1288 1289 /* 1290 * Now we must encrypt the verifier and package it up. 1291 */ 1292 verfp = (u_int32_t *)verf_str; 1293 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1294 if (time.tv_sec > nuidp->nu_timestamp.tv_sec || 1295 (time.tv_sec == nuidp->nu_timestamp.tv_sec && 1296 time.tv_usec > nuidp->nu_timestamp.tv_usec)) 1297 nuidp->nu_timestamp = time; 1298 else 1299 nuidp->nu_timestamp.tv_usec++; 1300 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1301 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1302 1303 /* 1304 * Now encrypt the timestamp verifier in ecb mode using the session 1305 * key. 1306 */ 1307 #ifdef NFSKERB 1308 XXX 1309 #endif 1310 1311 *verfp++ = ktvout.tv_sec; 1312 *verfp++ = ktvout.tv_usec; 1313 *verfp = 0; 1314 return (0); 1315 } 1316 1317 /* 1318 * Save the current nickname in a hash list entry on the mount point. 1319 */ 1320 int 1321 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1322 struct nfsmount *nmp; 1323 struct ucred *cred; 1324 int len; 1325 NFSKERBKEY_T key; 1326 struct mbuf **mdp; 1327 char **dposp; 1328 struct mbuf *mrep; 1329 { 1330 struct nfsuid *nuidp; 1331 u_int32_t *tl; 1332 int32_t t1; 1333 struct mbuf *md = *mdp; 1334 struct timeval ktvin, ktvout; 1335 u_int32_t nick; 1336 char *dpos = *dposp, *cp2; 1337 int deltasec, error = 0; 1338 1339 if (len == (3 * NFSX_UNSIGNED)) { 1340 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1341 ktvin.tv_sec = *tl++; 1342 ktvin.tv_usec = *tl++; 1343 nick = fxdr_unsigned(u_int32_t, *tl); 1344 1345 /* 1346 * Decrypt the timestamp in ecb mode. 1347 */ 1348 #ifdef NFSKERB 1349 XXX 1350 #endif 1351 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1352 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1353 deltasec = time.tv_sec - ktvout.tv_sec; 1354 if (deltasec < 0) 1355 deltasec = -deltasec; 1356 /* 1357 * If ok, add it to the hash list for the mount point. 1358 */ 1359 if (deltasec <= NFS_KERBCLOCKSKEW) { 1360 if (nmp->nm_numuids < nuidhash_max) { 1361 nmp->nm_numuids++; 1362 nuidp = (struct nfsuid *) 1363 malloc(sizeof (struct nfsuid), M_NFSUID, 1364 M_WAITOK); 1365 } else { 1366 nuidp = TAILQ_FIRST(&nmp->nm_uidlruhead); 1367 LIST_REMOVE(nuidp, nu_hash); 1368 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1369 nu_lru); 1370 } 1371 nuidp->nu_flag = 0; 1372 nuidp->nu_cr.cr_uid = cred->cr_uid; 1373 nuidp->nu_expire = time.tv_sec + NFS_KERBTTL; 1374 nuidp->nu_timestamp = ktvout; 1375 nuidp->nu_nickname = nick; 1376 memcpy(nuidp->nu_key, key, sizeof (NFSKERBKEY_T)); 1377 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1378 nu_lru); 1379 LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid), 1380 nuidp, nu_hash); 1381 } 1382 } else 1383 nfsm_adv(nfsm_rndup(len)); 1384 nfsmout: 1385 *mdp = md; 1386 *dposp = dpos; 1387 return (error); 1388 } 1389 #endif /* NFS */ 1390
Indexes created Thu Oct 23 22:10:10 GMT 2025