nfs_syscalls.c revision 1.48.2.4
1 /* $NetBSD: nfs_syscalls.c,v 1.48.2.4 2002/01/08 00:34:33 nathanw 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95 39 */ 40 41 #include <sys/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: nfs_syscalls.c,v 1.48.2.4 2002/01/08 00:34:33 nathanw Exp $"); 43 44 #include "fs_nfs.h" 45 #include "opt_nfs.h" 46 #include "opt_nfsserver.h" 47 #include "opt_iso.h" 48 #include "opt_inet.h" 49 #include "opt_compat_netbsd.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/file.h> 55 #include <sys/stat.h> 56 #include <sys/vnode.h> 57 #include <sys/mount.h> 58 #include <sys/lwp.h> 59 #include <sys/proc.h> 60 #include <sys/uio.h> 61 #include <sys/malloc.h> 62 #include <sys/buf.h> 63 #include <sys/mbuf.h> 64 #include <sys/socket.h> 65 #include <sys/socketvar.h> 66 #include <sys/signalvar.h> 67 #include <sys/domain.h> 68 #include <sys/protosw.h> 69 #include <sys/namei.h> 70 #include <sys/syslog.h> 71 #include <sys/filedesc.h> 72 #include <sys/kthread.h> 73 74 #include <sys/syscallargs.h> 75 76 #include <netinet/in.h> 77 #include <netinet/tcp.h> 78 #ifdef ISO 79 #include <netiso/iso.h> 80 #endif 81 #include <nfs/xdr_subs.h> 82 #include <nfs/rpcv2.h> 83 #include <nfs/nfsproto.h> 84 #include <nfs/nfs.h> 85 #include <nfs/nfsm_subs.h> 86 #include <nfs/nfsrvcache.h> 87 #include <nfs/nfsmount.h> 88 #include <nfs/nfsnode.h> 89 #include <nfs/nqnfs.h> 90 #include <nfs/nfsrtt.h> 91 #include <nfs/nfs_var.h> 92 93 /* Global defs. */ 94 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *, 95 struct nfssvc_sock *, 96 struct proc *, struct mbuf **)); 97 extern int nfs_numasync; 98 extern time_t nqnfsstarttime; 99 extern int nqsrv_writeslack; 100 extern int nfsrtton; 101 extern struct nfsstats nfsstats; 102 extern int nfsrvw_procrastinate; 103 struct nfssvc_sock *nfs_udpsock; 104 #ifdef ISO 105 struct nfssvc_sock *nfs_cltpsock; 106 #endif 107 #ifdef INET6 108 struct nfssvc_sock *nfs_udp6sock; 109 #endif 110 int nuidhash_max = NFS_MAXUIDHASH; 111 int nfsd_waiting = 0; 112 #ifdef NFSSERVER 113 static int nfs_numnfsd = 0; 114 static int notstarted = 1; 115 static int modify_flag = 0; 116 static struct nfsdrt nfsdrt; 117 #endif 118 119 #define TRUE 1 120 #define FALSE 0 121 122 #ifdef NFS 123 static struct proc *nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 124 int nfs_niothreads = -1; /* == "0, and has never been set" */ 125 #endif 126 127 #ifdef NFSSERVER 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(l, v, retval) 145 struct lwp *l; 146 void *v; 147 register_t *retval; 148 { 149 struct sys_nfssvc_args /* { 150 syscallarg(int) flag; 151 syscallarg(caddr_t) argp; 152 } */ *uap = v; 153 struct proc *p = l->l_proc; 154 int error; 155 #ifdef NFS 156 struct nameidata nd; 157 struct nfsmount *nmp; 158 struct nfsd_cargs ncd; 159 #endif 160 #ifdef NFSSERVER 161 struct file *fp; 162 struct mbuf *nam; 163 struct nfsd_args nfsdarg; 164 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs; 165 struct nfsd *nfsd; 166 struct nfssvc_sock *slp; 167 struct nfsuid *nuidp; 168 #endif 169 170 /* 171 * Must be super user 172 */ 173 error = suser(p->p_ucred, &p->p_acflag); 174 if(error) 175 return (error); 176 while (nfssvc_sockhead_flag & SLP_INIT) { 177 nfssvc_sockhead_flag |= SLP_WANTINIT; 178 (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0); 179 } 180 if (SCARG(uap, flag) & NFSSVC_BIOD) { 181 #if defined(NFS) && defined(COMPAT_14) 182 error = nfssvc_iod(l); 183 #else 184 error = ENOSYS; 185 #endif 186 } else if (SCARG(uap, flag) & NFSSVC_MNTD) { 187 #ifndef NFS 188 error = ENOSYS; 189 #else 190 error = copyin(SCARG(uap, argp), (caddr_t)&ncd, sizeof (ncd)); 191 if (error) 192 return (error); 193 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, 194 ncd.ncd_dirp, p); 195 error = namei(&nd); 196 if (error) 197 return (error); 198 if ((nd.ni_vp->v_flag & VROOT) == 0) 199 error = EINVAL; 200 nmp = VFSTONFS(nd.ni_vp->v_mount); 201 vput(nd.ni_vp); 202 if (error) 203 return (error); 204 if ((nmp->nm_iflag & NFSMNT_MNTD) && 205 (SCARG(uap, flag) & NFSSVC_GOTAUTH) == 0) 206 return (0); 207 nmp->nm_iflag |= NFSMNT_MNTD; 208 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, SCARG(uap, flag), 209 SCARG(uap, argp), l); 210 #endif /* NFS */ 211 } else if (SCARG(uap, flag) & NFSSVC_ADDSOCK) { 212 #ifndef NFSSERVER 213 error = ENOSYS; 214 #else 215 error = copyin(SCARG(uap, argp), (caddr_t)&nfsdarg, 216 sizeof(nfsdarg)); 217 if (error) 218 return (error); 219 /* getsock() will use the descriptor for us */ 220 error = getsock(p->p_fd, nfsdarg.sock, &fp); 221 if (error) 222 return (error); 223 /* 224 * Get the client address for connected sockets. 225 */ 226 if (nfsdarg.name == NULL || nfsdarg.namelen == 0) 227 nam = (struct mbuf *)0; 228 else { 229 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen, 230 MT_SONAME); 231 if (error) { 232 FILE_UNUSE(fp, NULL); 233 return (error); 234 } 235 } 236 error = nfssvc_addsock(fp, nam); 237 FILE_UNUSE(fp, NULL); 238 #endif /* !NFSSERVER */ 239 } else { 240 #ifndef NFSSERVER 241 error = ENOSYS; 242 #else 243 error = copyin(SCARG(uap, argp), (caddr_t)nsd, sizeof (*nsd)); 244 if (error) 245 return (error); 246 if ((SCARG(uap, flag) & NFSSVC_AUTHIN) && 247 ((nfsd = nsd->nsd_nfsd)) != NULL && 248 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) { 249 slp = nfsd->nfsd_slp; 250 251 /* 252 * First check to see if another nfsd has already 253 * added this credential. 254 */ 255 for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first; 256 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 257 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid && 258 (!nfsd->nfsd_nd->nd_nam2 || 259 netaddr_match(NU_NETFAM(nuidp), 260 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2))) 261 break; 262 } 263 if (nuidp) { 264 nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr); 265 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 266 } else { 267 /* 268 * Nope, so we will. 269 */ 270 if (slp->ns_numuids < nuidhash_max) { 271 slp->ns_numuids++; 272 nuidp = (struct nfsuid *) 273 malloc(sizeof (struct nfsuid), M_NFSUID, 274 M_WAITOK); 275 } else 276 nuidp = (struct nfsuid *)0; 277 if ((slp->ns_flag & SLP_VALID) == 0) { 278 if (nuidp) 279 free((caddr_t)nuidp, M_NFSUID); 280 } else { 281 if (nuidp == (struct nfsuid *)0) { 282 nuidp = slp->ns_uidlruhead.tqh_first; 283 LIST_REMOVE(nuidp, nu_hash); 284 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, 285 nu_lru); 286 if (nuidp->nu_flag & NU_NAM) 287 m_freem(nuidp->nu_nam); 288 } 289 nuidp->nu_flag = 0; 290 crcvt(&nuidp->nu_cr, &nsd->nsd_cr); 291 if (nuidp->nu_cr.cr_ngroups > NGROUPS) 292 nuidp->nu_cr.cr_ngroups = NGROUPS; 293 nuidp->nu_cr.cr_ref = 1; 294 nuidp->nu_timestamp = nsd->nsd_timestamp; 295 nuidp->nu_expire = time.tv_sec + nsd->nsd_ttl; 296 /* 297 * and save the session key in nu_key. 298 */ 299 memcpy(nuidp->nu_key, nsd->nsd_key, 300 sizeof(nsd->nsd_key)); 301 if (nfsd->nfsd_nd->nd_nam2) { 302 struct sockaddr_in *saddr; 303 304 saddr = mtod(nfsd->nfsd_nd->nd_nam2, 305 struct sockaddr_in *); 306 switch (saddr->sin_family) { 307 case AF_INET: 308 nuidp->nu_flag |= NU_INETADDR; 309 nuidp->nu_inetaddr = 310 saddr->sin_addr.s_addr; 311 break; 312 case AF_ISO: 313 default: 314 nuidp->nu_flag |= NU_NAM; 315 nuidp->nu_nam = m_copym( 316 nfsd->nfsd_nd->nd_nam2, 0, 317 M_COPYALL, M_WAIT); 318 break; 319 }; 320 } 321 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp, 322 nu_lru); 323 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid), 324 nuidp, nu_hash); 325 nfsrv_setcred(&nuidp->nu_cr, 326 &nfsd->nfsd_nd->nd_cr); 327 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL; 328 } 329 } 330 } 331 if ((SCARG(uap, flag) & NFSSVC_AUTHINFAIL) && 332 (nfsd = nsd->nsd_nfsd)) 333 nfsd->nfsd_flag |= NFSD_AUTHFAIL; 334 error = nfssvc_nfsd(nsd, SCARG(uap, argp), l); 335 #endif /* !NFSSERVER */ 336 } 337 if (error == EINTR || error == ERESTART) 338 error = 0; 339 return (error); 340 } 341 342 #ifdef NFSSERVER 343 /* 344 * Adds a socket to the list for servicing by nfsds. 345 */ 346 int 347 nfssvc_addsock(fp, mynam) 348 struct file *fp; 349 struct mbuf *mynam; 350 { 351 struct mbuf *m; 352 int siz; 353 struct nfssvc_sock *slp; 354 struct socket *so; 355 struct nfssvc_sock *tslp; 356 int error, s; 357 358 so = (struct socket *)fp->f_data; 359 tslp = (struct nfssvc_sock *)0; 360 /* 361 * Add it to the list, as required. 362 */ 363 if (so->so_proto->pr_protocol == IPPROTO_UDP) { 364 #ifdef INET6 365 if (so->so_proto->pr_domain->dom_family == AF_INET6) 366 tslp = nfs_udp6sock; 367 else 368 #endif 369 tslp = nfs_udpsock; 370 if (tslp->ns_flag & SLP_VALID) { 371 m_freem(mynam); 372 return (EPERM); 373 } 374 #ifdef ISO 375 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) { 376 tslp = nfs_cltpsock; 377 if (tslp->ns_flag & SLP_VALID) { 378 m_freem(mynam); 379 return (EPERM); 380 } 381 #endif /* ISO */ 382 } 383 if (so->so_type == SOCK_STREAM) 384 siz = NFS_MAXPACKET + sizeof (u_long); 385 else 386 siz = NFS_MAXPACKET; 387 error = soreserve(so, siz, siz); 388 if (error) { 389 m_freem(mynam); 390 return (error); 391 } 392 393 /* 394 * Set protocol specific options { for now TCP only } and 395 * reserve some space. For datagram sockets, this can get called 396 * repeatedly for the same socket, but that isn't harmful. 397 */ 398 if (so->so_type == SOCK_STREAM) { 399 MGET(m, M_WAIT, MT_SOOPTS); 400 *mtod(m, int32_t *) = 1; 401 m->m_len = sizeof(int32_t); 402 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m); 403 } 404 if ((so->so_proto->pr_domain->dom_family == AF_INET 405 #ifdef INET6 406 || so->so_proto->pr_domain->dom_family == AF_INET6 407 #endif 408 ) && 409 so->so_proto->pr_protocol == IPPROTO_TCP) { 410 MGET(m, M_WAIT, MT_SOOPTS); 411 *mtod(m, int32_t *) = 1; 412 m->m_len = sizeof(int32_t); 413 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m); 414 } 415 so->so_rcv.sb_flags &= ~SB_NOINTR; 416 so->so_rcv.sb_timeo = 0; 417 so->so_snd.sb_flags &= ~SB_NOINTR; 418 so->so_snd.sb_timeo = 0; 419 if (tslp) 420 slp = tslp; 421 else { 422 slp = (struct nfssvc_sock *) 423 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 424 memset((caddr_t)slp, 0, sizeof (struct nfssvc_sock)); 425 TAILQ_INIT(&slp->ns_uidlruhead); 426 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain); 427 } 428 slp->ns_so = so; 429 slp->ns_nam = mynam; 430 fp->f_count++; 431 slp->ns_fp = fp; 432 s = splsoftnet(); 433 so->so_upcallarg = (caddr_t)slp; 434 so->so_upcall = nfsrv_rcv; 435 so->so_rcv.sb_flags |= SB_UPCALL; 436 slp->ns_flag = (SLP_VALID | SLP_NEEDQ); 437 nfsrv_wakenfsd(slp); 438 splx(s); 439 return (0); 440 } 441 442 /* 443 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 444 * until it is killed by a signal. 445 */ 446 int 447 nfssvc_nfsd(nsd, argp, l) 448 struct nfsd_srvargs *nsd; 449 caddr_t argp; 450 struct lwp *l; 451 { 452 struct mbuf *m; 453 int siz; 454 struct nfssvc_sock *slp; 455 struct socket *so; 456 int *solockp; 457 struct nfsd *nfsd = nsd->nsd_nfsd; 458 struct nfsrv_descript *nd = NULL; 459 struct mbuf *mreq; 460 int error = 0, cacherep, s, sotype, writes_todo; 461 u_quad_t cur_usec; 462 struct proc *p = l->l_proc; 463 464 #ifndef nolint 465 cacherep = RC_DOIT; 466 writes_todo = 0; 467 #endif 468 s = splsoftnet(); 469 if (nfsd == (struct nfsd *)0) { 470 nsd->nsd_nfsd = nfsd = (struct nfsd *) 471 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK); 472 memset((caddr_t)nfsd, 0, sizeof (struct nfsd)); 473 nfsd->nfsd_procp = p; 474 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain); 475 nfs_numnfsd++; 476 } 477 PHOLD(l); 478 /* 479 * Loop getting rpc requests until SIGKILL. 480 */ 481 for (;;) { 482 if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) { 483 while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 484 (nfsd_head_flag & NFSD_CHECKSLP) == 0) { 485 nfsd->nfsd_flag |= NFSD_WAITING; 486 nfsd_waiting++; 487 error = tsleep((caddr_t)nfsd, PSOCK | PCATCH, 488 "nfsd", 0); 489 nfsd_waiting--; 490 if (error) 491 goto done; 492 } 493 if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 && 494 (nfsd_head_flag & NFSD_CHECKSLP) != 0) { 495 for (slp = nfssvc_sockhead.tqh_first; slp != 0; 496 slp = slp->ns_chain.tqe_next) { 497 if ((slp->ns_flag & (SLP_VALID | SLP_DOREC)) 498 == (SLP_VALID | SLP_DOREC)) { 499 slp->ns_flag &= ~SLP_DOREC; 500 slp->ns_sref++; 501 nfsd->nfsd_slp = slp; 502 break; 503 } 504 } 505 if (slp == 0) 506 nfsd_head_flag &= ~NFSD_CHECKSLP; 507 } 508 if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0) 509 continue; 510 if (slp->ns_flag & SLP_VALID) { 511 if (slp->ns_flag & SLP_DISCONN) 512 nfsrv_zapsock(slp); 513 else if (slp->ns_flag & SLP_NEEDQ) { 514 slp->ns_flag &= ~SLP_NEEDQ; 515 (void) nfs_sndlock(&slp->ns_solock, 516 (struct nfsreq *)0); 517 nfsrv_rcv(slp->ns_so, (caddr_t)slp, 518 M_WAIT); 519 nfs_sndunlock(&slp->ns_solock); 520 } 521 error = nfsrv_dorec(slp, nfsd, &nd); 522 cur_usec = (u_quad_t)time.tv_sec * 1000000 + 523 (u_quad_t)time.tv_usec; 524 if (error && slp->ns_tq.lh_first && 525 slp->ns_tq.lh_first->nd_time <= cur_usec) { 526 error = 0; 527 cacherep = RC_DOIT; 528 writes_todo = 1; 529 } else 530 writes_todo = 0; 531 nfsd->nfsd_flag |= NFSD_REQINPROG; 532 } 533 } else { 534 error = 0; 535 slp = nfsd->nfsd_slp; 536 } 537 if (error || (slp->ns_flag & SLP_VALID) == 0) { 538 if (nd) { 539 free((caddr_t)nd, M_NFSRVDESC); 540 nd = NULL; 541 } 542 nfsd->nfsd_slp = (struct nfssvc_sock *)0; 543 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 544 nfsrv_slpderef(slp); 545 continue; 546 } 547 splx(s); 548 so = slp->ns_so; 549 sotype = so->so_type; 550 if (so->so_proto->pr_flags & PR_CONNREQUIRED) 551 solockp = &slp->ns_solock; 552 else 553 solockp = (int *)0; 554 if (nd) { 555 nd->nd_starttime = time; 556 if (nd->nd_nam2) 557 nd->nd_nam = nd->nd_nam2; 558 else 559 nd->nd_nam = slp->ns_nam; 560 561 /* 562 * Check to see if authorization is needed. 563 */ 564 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) { 565 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH; 566 nsd->nsd_haddr = mtod(nd->nd_nam, 567 struct sockaddr_in *)->sin_addr.s_addr; 568 nsd->nsd_authlen = nfsd->nfsd_authlen; 569 nsd->nsd_verflen = nfsd->nfsd_verflen; 570 if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr, 571 nfsd->nfsd_authlen) && 572 !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr, 573 nfsd->nfsd_verflen) && 574 !copyout((caddr_t)nsd, argp, sizeof (*nsd))) { 575 PRELE(l); 576 return (ENEEDAUTH); 577 } 578 cacherep = RC_DROPIT; 579 } else 580 cacherep = nfsrv_getcache(nd, slp, &mreq); 581 582 /* 583 * Check for just starting up for NQNFS and send 584 * fake "try again later" replies to the NQNFS clients. 585 */ 586 if (notstarted && nqnfsstarttime <= time.tv_sec) { 587 if (modify_flag) { 588 nqnfsstarttime = time.tv_sec + nqsrv_writeslack; 589 modify_flag = 0; 590 } else 591 notstarted = 0; 592 } 593 if (notstarted) { 594 if ((nd->nd_flag & ND_NQNFS) == 0) 595 cacherep = RC_DROPIT; 596 else if (nd->nd_procnum != NFSPROC_WRITE) { 597 nd->nd_procnum = NFSPROC_NOOP; 598 nd->nd_repstat = NQNFS_TRYLATER; 599 cacherep = RC_DOIT; 600 } else 601 modify_flag = 1; 602 } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) { 603 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL; 604 nd->nd_procnum = NFSPROC_NOOP; 605 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 606 cacherep = RC_DOIT; 607 } 608 } 609 610 /* 611 * Loop to get all the write rpc relies that have been 612 * gathered together. 613 */ 614 do { 615 #ifdef DIAGNOSTIC 616 int lockcount; 617 #endif 618 switch (cacherep) { 619 case RC_DOIT: 620 #ifdef DIAGNOSTIC 621 /* 622 * NFS server procs should neither release 623 * locks already held, nor leave things 624 * locked. Catch this sooner, rather than 625 * later (when we try to relock something we 626 * already have locked). Careful inspection 627 * of the failing routine usually turns up the 628 * lock leak.. once we know what it is.. 629 */ 630 lockcount = l->l_locks; 631 #endif 632 if (writes_todo || (!(nd->nd_flag & ND_NFSV3) && 633 nd->nd_procnum == NFSPROC_WRITE && 634 nfsrvw_procrastinate > 0 && !notstarted)) 635 error = nfsrv_writegather(&nd, slp, 636 nfsd->nfsd_procp, &mreq); 637 else 638 error = (*(nfsrv3_procs[nd->nd_procnum]))(nd, 639 slp, nfsd->nfsd_procp, &mreq); 640 #ifdef DIAGNOSTIC 641 if (l->l_locks != lockcount) { 642 /* 643 * If you see this panic, audit 644 * nfsrv3_procs[nd->nd_procnum] for vnode 645 * locking errors (usually, it's due to 646 * forgetting to vput() something). 647 */ 648 #ifdef DEBUG 649 extern void printlockedvnodes(void); 650 printlockedvnodes(); 651 #endif 652 printf("nfsd: locking botch in op %d" 653 " (before %d, after %d)\n", 654 nd ? nd->nd_procnum : -1, 655 lockcount, l->l_locks); 656 } 657 #endif 658 if (mreq == NULL) 659 break; 660 if (error) { 661 if (nd->nd_procnum != NQNFSPROC_VACATED) 662 nfsstats.srv_errs++; 663 nfsrv_updatecache(nd, FALSE, mreq); 664 if (nd->nd_nam2) 665 m_freem(nd->nd_nam2); 666 break; 667 } 668 nfsstats.srvrpccnt[nd->nd_procnum]++; 669 nfsrv_updatecache(nd, TRUE, mreq); 670 nd->nd_mrep = (struct mbuf *)0; 671 case RC_REPLY: 672 m = mreq; 673 siz = 0; 674 while (m) { 675 siz += m->m_len; 676 m = m->m_next; 677 } 678 if (siz <= 0 || siz > NFS_MAXPACKET) { 679 printf("mbuf siz=%d\n",siz); 680 panic("Bad nfs svc reply"); 681 } 682 m = mreq; 683 m->m_pkthdr.len = siz; 684 m->m_pkthdr.rcvif = (struct ifnet *)0; 685 /* 686 * For stream protocols, prepend a Sun RPC 687 * Record Mark. 688 */ 689 if (sotype == SOCK_STREAM) { 690 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT); 691 *mtod(m, u_int32_t *) = htonl(0x80000000 | siz); 692 } 693 if (solockp) 694 (void) nfs_sndlock(solockp, (struct nfsreq *)0); 695 if (slp->ns_flag & SLP_VALID) 696 error = nfs_send(so, nd->nd_nam2, m, NULL); 697 else { 698 error = EPIPE; 699 m_freem(m); 700 } 701 if (nfsrtton) 702 nfsd_rt(sotype, nd, cacherep); 703 if (nd->nd_nam2) 704 MFREE(nd->nd_nam2, m); 705 if (nd->nd_mrep) 706 m_freem(nd->nd_mrep); 707 if (error == EPIPE) 708 nfsrv_zapsock(slp); 709 if (solockp) 710 nfs_sndunlock(solockp); 711 if (error == EINTR || error == ERESTART) { 712 free((caddr_t)nd, M_NFSRVDESC); 713 nfsrv_slpderef(slp); 714 s = splsoftnet(); 715 goto done; 716 } 717 break; 718 case RC_DROPIT: 719 if (nfsrtton) 720 nfsd_rt(sotype, nd, cacherep); 721 m_freem(nd->nd_mrep); 722 m_freem(nd->nd_nam2); 723 break; 724 }; 725 if (nd) { 726 FREE((caddr_t)nd, M_NFSRVDESC); 727 nd = NULL; 728 } 729 730 /* 731 * Check to see if there are outstanding writes that 732 * need to be serviced. 733 */ 734 cur_usec = (u_quad_t)time.tv_sec * 1000000 + 735 (u_quad_t)time.tv_usec; 736 s = splsoftclock(); 737 if (slp->ns_tq.lh_first && 738 slp->ns_tq.lh_first->nd_time <= cur_usec) { 739 cacherep = RC_DOIT; 740 writes_todo = 1; 741 } else 742 writes_todo = 0; 743 splx(s); 744 } while (writes_todo); 745 s = splsoftnet(); 746 if (nfsrv_dorec(slp, nfsd, &nd)) { 747 nfsd->nfsd_flag &= ~NFSD_REQINPROG; 748 nfsd->nfsd_slp = NULL; 749 nfsrv_slpderef(slp); 750 } 751 } 752 done: 753 PRELE(l); 754 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain); 755 splx(s); 756 free((caddr_t)nfsd, M_NFSD); 757 nsd->nsd_nfsd = (struct nfsd *)0; 758 if (--nfs_numnfsd == 0) 759 nfsrv_init(TRUE); /* Reinitialize everything */ 760 return (error); 761 } 762 763 /* 764 * Shut down a socket associated with an nfssvc_sock structure. 765 * Should be called with the send lock set, if required. 766 * The trick here is to increment the sref at the start, so that the nfsds 767 * will stop using it and clear ns_flag at the end so that it will not be 768 * reassigned during cleanup. 769 */ 770 void 771 nfsrv_zapsock(slp) 772 struct nfssvc_sock *slp; 773 { 774 struct nfsuid *nuidp, *nnuidp; 775 struct nfsrv_descript *nwp, *nnwp; 776 struct socket *so; 777 struct file *fp; 778 struct mbuf *m; 779 int s; 780 781 slp->ns_flag &= ~SLP_ALLFLAGS; 782 fp = slp->ns_fp; 783 if (fp) { 784 FILE_USE(fp); 785 slp->ns_fp = (struct file *)0; 786 so = slp->ns_so; 787 so->so_upcall = NULL; 788 so->so_upcallarg = NULL; 789 so->so_rcv.sb_flags &= ~SB_UPCALL; 790 soshutdown(so, 2); 791 closef(fp, (struct proc *)0); 792 if (slp->ns_nam) 793 MFREE(slp->ns_nam, m); 794 m_freem(slp->ns_raw); 795 m_freem(slp->ns_rec); 796 for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0; 797 nuidp = nnuidp) { 798 nnuidp = nuidp->nu_lru.tqe_next; 799 LIST_REMOVE(nuidp, nu_hash); 800 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru); 801 if (nuidp->nu_flag & NU_NAM) 802 m_freem(nuidp->nu_nam); 803 free((caddr_t)nuidp, M_NFSUID); 804 } 805 s = splsoftclock(); 806 for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) { 807 nnwp = nwp->nd_tq.le_next; 808 LIST_REMOVE(nwp, nd_tq); 809 free((caddr_t)nwp, M_NFSRVDESC); 810 } 811 LIST_INIT(&slp->ns_tq); 812 splx(s); 813 } 814 } 815 816 /* 817 * Derefence a server socket structure. If it has no more references and 818 * is no longer valid, you can throw it away. 819 */ 820 void 821 nfsrv_slpderef(slp) 822 struct nfssvc_sock *slp; 823 { 824 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) { 825 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 826 free((caddr_t)slp, M_NFSSVC); 827 } 828 } 829 830 /* 831 * Initialize the data structures for the server. 832 * Handshake with any new nfsds starting up to avoid any chance of 833 * corruption. 834 */ 835 void 836 nfsrv_init(terminating) 837 int terminating; 838 { 839 struct nfssvc_sock *slp, *nslp; 840 841 if (nfssvc_sockhead_flag & SLP_INIT) 842 panic("nfsd init"); 843 nfssvc_sockhead_flag |= SLP_INIT; 844 if (terminating) { 845 for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) { 846 nslp = slp->ns_chain.tqe_next; 847 if (slp->ns_flag & SLP_VALID) 848 nfsrv_zapsock(slp); 849 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain); 850 free((caddr_t)slp, M_NFSSVC); 851 } 852 nfsrv_cleancache(); /* And clear out server cache */ 853 } else 854 nfs_pub.np_valid = 0; 855 856 TAILQ_INIT(&nfssvc_sockhead); 857 nfssvc_sockhead_flag &= ~SLP_INIT; 858 if (nfssvc_sockhead_flag & SLP_WANTINIT) { 859 nfssvc_sockhead_flag &= ~SLP_WANTINIT; 860 wakeup((caddr_t)&nfssvc_sockhead); 861 } 862 863 TAILQ_INIT(&nfsd_head); 864 nfsd_head_flag &= ~NFSD_CHECKSLP; 865 866 nfs_udpsock = (struct nfssvc_sock *) 867 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 868 memset((caddr_t)nfs_udpsock, 0, sizeof (struct nfssvc_sock)); 869 TAILQ_INIT(&nfs_udpsock->ns_uidlruhead); 870 TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain); 871 872 #ifdef INET6 873 nfs_udp6sock = (struct nfssvc_sock *) 874 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 875 memset((caddr_t)nfs_udp6sock, 0, sizeof (struct nfssvc_sock)); 876 TAILQ_INIT(&nfs_udp6sock->ns_uidlruhead); 877 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_udp6sock, ns_chain); 878 #endif 879 880 #ifdef ISO 881 nfs_cltpsock = (struct nfssvc_sock *) 882 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK); 883 memset((caddr_t)nfs_cltpsock, 0, sizeof (struct nfssvc_sock)); 884 TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead); 885 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain); 886 #endif 887 } 888 889 /* 890 * Add entries to the server monitor log. 891 */ 892 static void 893 nfsd_rt(sotype, nd, cacherep) 894 int sotype; 895 struct nfsrv_descript *nd; 896 int cacherep; 897 { 898 struct drt *rt; 899 900 rt = &nfsdrt.drt[nfsdrt.pos]; 901 if (cacherep == RC_DOIT) 902 rt->flag = 0; 903 else if (cacherep == RC_REPLY) 904 rt->flag = DRT_CACHEREPLY; 905 else 906 rt->flag = DRT_CACHEDROP; 907 if (sotype == SOCK_STREAM) 908 rt->flag |= DRT_TCP; 909 if (nd->nd_flag & ND_NQNFS) 910 rt->flag |= DRT_NQNFS; 911 else if (nd->nd_flag & ND_NFSV3) 912 rt->flag |= DRT_NFSV3; 913 rt->proc = nd->nd_procnum; 914 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET) 915 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr; 916 else 917 rt->ipadr = INADDR_ANY; 918 rt->resptime = ((time.tv_sec - nd->nd_starttime.tv_sec) * 1000000) + 919 (time.tv_usec - nd->nd_starttime.tv_usec); 920 rt->tstamp = time; 921 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ; 922 } 923 #endif /* NFSSERVER */ 924 925 #ifdef NFS 926 927 int nfs_defect = 0; 928 /* 929 * Asynchronous I/O threads for client nfs. 930 * They do read-ahead and write-behind operations on the block I/O cache. 931 * Never returns unless it fails or gets killed. 932 */ 933 934 int 935 nfssvc_iod(l) 936 struct lwp *l; 937 { 938 struct buf *bp; 939 int i, myiod; 940 struct nfsmount *nmp; 941 int error = 0; 942 struct proc *p = l->l_proc; 943 944 /* 945 * Assign my position or return error if too many already running 946 */ 947 myiod = -1; 948 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 949 if (nfs_asyncdaemon[i] == NULL) { 950 myiod = i; 951 break; 952 } 953 if (myiod == -1) 954 return (EBUSY); 955 nfs_asyncdaemon[myiod] = p; 956 nfs_numasync++; 957 PHOLD(l); 958 /* 959 * Just loop around doing our stuff until SIGKILL 960 */ 961 for (;;) { 962 while (((nmp = nfs_iodmount[myiod]) == NULL 963 || nmp->nm_bufq.tqh_first == NULL) 964 && error == 0) { 965 if (nmp) 966 nmp->nm_bufqiods--; 967 nfs_iodwant[myiod] = p; 968 nfs_iodmount[myiod] = NULL; 969 error = tsleep((caddr_t)&nfs_iodwant[myiod], 970 PWAIT | PCATCH, "nfsidl", 0); 971 } 972 while (nmp != NULL && (bp = nmp->nm_bufq.tqh_first) != NULL) { 973 /* Take one off the front of the list */ 974 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist); 975 nmp->nm_bufqlen--; 976 if (nmp->nm_bufqwant && nmp->nm_bufqlen < 2 * nfs_numasync) { 977 nmp->nm_bufqwant = FALSE; 978 wakeup(&nmp->nm_bufq); 979 } 980 (void) nfs_doio(bp, NULL); 981 /* 982 * If there are more than one iod on this mount, then defect 983 * so that the iods can be shared out fairly between the mounts 984 */ 985 if (nfs_defect && nmp->nm_bufqiods > 1) { 986 nfs_iodmount[myiod] = NULL; 987 nmp->nm_bufqiods--; 988 break; 989 } 990 } 991 if (error) { 992 break; 993 } 994 } 995 PRELE(l); 996 if (nmp) 997 nmp->nm_bufqiods--; 998 nfs_iodwant[myiod] = NULL; 999 nfs_iodmount[myiod] = NULL; 1000 nfs_asyncdaemon[myiod] = NULL; 1001 nfs_numasync--; 1002 1003 return (error); 1004 } 1005 1006 void 1007 start_nfsio(arg) 1008 void *arg; 1009 { 1010 nfssvc_iod(curproc); 1011 1012 kthread_exit(0); 1013 } 1014 1015 void 1016 nfs_getset_niothreads(set) 1017 int set; 1018 { 1019 int i, have, start; 1020 1021 for (have = 0, i = 0; i < NFS_MAXASYNCDAEMON; i++) 1022 if (nfs_asyncdaemon[i] != NULL) 1023 have++; 1024 1025 if (set) { 1026 /* clamp to sane range */ 1027 nfs_niothreads = max(0, min(nfs_niothreads, NFS_MAXASYNCDAEMON)); 1028 1029 start = nfs_niothreads - have; 1030 1031 while (start > 0) { 1032 kthread_create1(start_nfsio, NULL, NULL, "nfsio"); 1033 start--; 1034 } 1035 1036 for (i = 0; (start < 0) && (i < NFS_MAXASYNCDAEMON); i++) 1037 if (nfs_asyncdaemon[i] != NULL) { 1038 psignal(nfs_asyncdaemon[i], SIGKILL); 1039 start++; 1040 } 1041 } else { 1042 if (nfs_niothreads >= 0) 1043 nfs_niothreads = have; 1044 } 1045 } 1046 1047 /* 1048 * Get an authorization string for the uid by having the mount_nfs sitting 1049 * on this mount point porpous out of the kernel and do it. 1050 */ 1051 int 1052 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key) 1053 struct nfsmount *nmp; 1054 struct nfsreq *rep; 1055 struct ucred *cred; 1056 char **auth_str; 1057 int *auth_len; 1058 char *verf_str; 1059 int *verf_len; 1060 NFSKERBKEY_T key; /* return session key */ 1061 { 1062 int error = 0; 1063 1064 while ((nmp->nm_iflag & NFSMNT_WAITAUTH) == 0) { 1065 nmp->nm_iflag |= NFSMNT_WANTAUTH; 1066 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK, 1067 "nfsauth1", 2 * hz); 1068 error = nfs_sigintr(nmp, rep, rep->r_procp); 1069 if (error) { 1070 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1071 return (error); 1072 } 1073 } 1074 nmp->nm_iflag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH); 1075 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK); 1076 nmp->nm_authlen = RPCAUTH_MAXSIZ; 1077 nmp->nm_verfstr = verf_str; 1078 nmp->nm_verflen = *verf_len; 1079 nmp->nm_authuid = cred->cr_uid; 1080 wakeup((caddr_t)&nmp->nm_authstr); 1081 1082 /* 1083 * And wait for mount_nfs to do its stuff. 1084 */ 1085 while ((nmp->nm_iflag & NFSMNT_HASAUTH) == 0 && error == 0) { 1086 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK, 1087 "nfsauth2", 2 * hz); 1088 error = nfs_sigintr(nmp, rep, rep->r_procp); 1089 } 1090 if (nmp->nm_iflag & NFSMNT_AUTHERR) { 1091 nmp->nm_iflag &= ~NFSMNT_AUTHERR; 1092 error = EAUTH; 1093 } 1094 if (error) 1095 free((caddr_t)*auth_str, M_TEMP); 1096 else { 1097 *auth_len = nmp->nm_authlen; 1098 *verf_len = nmp->nm_verflen; 1099 memcpy((caddr_t)key, (caddr_t)nmp->nm_key, sizeof (key)); 1100 } 1101 nmp->nm_iflag &= ~NFSMNT_HASAUTH; 1102 nmp->nm_iflag |= NFSMNT_WAITAUTH; 1103 if (nmp->nm_iflag & NFSMNT_WANTAUTH) { 1104 nmp->nm_iflag &= ~NFSMNT_WANTAUTH; 1105 wakeup((caddr_t)&nmp->nm_authtype); 1106 } 1107 return (error); 1108 } 1109 1110 /* 1111 * Get a nickname authenticator and verifier. 1112 */ 1113 int 1114 nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len) 1115 struct nfsmount *nmp; 1116 struct ucred *cred; 1117 char **auth_str; 1118 int *auth_len; 1119 char *verf_str; 1120 int verf_len; 1121 { 1122 struct nfsuid *nuidp; 1123 u_int32_t *nickp, *verfp; 1124 struct timeval ktvin, ktvout; 1125 1126 #ifdef DIAGNOSTIC 1127 if (verf_len < (4 * NFSX_UNSIGNED)) 1128 panic("nfs_getnickauth verf too small"); 1129 #endif 1130 for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first; 1131 nuidp != 0; nuidp = nuidp->nu_hash.le_next) { 1132 if (nuidp->nu_cr.cr_uid == cred->cr_uid) 1133 break; 1134 } 1135 if (!nuidp || nuidp->nu_expire < time.tv_sec) 1136 return (EACCES); 1137 1138 /* 1139 * Move to the end of the lru list (end of lru == most recently used). 1140 */ 1141 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru); 1142 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru); 1143 1144 nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK); 1145 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME); 1146 *nickp = txdr_unsigned(nuidp->nu_nickname); 1147 *auth_str = (char *)nickp; 1148 *auth_len = 2 * NFSX_UNSIGNED; 1149 1150 /* 1151 * Now we must encrypt the verifier and package it up. 1152 */ 1153 verfp = (u_int32_t *)verf_str; 1154 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME); 1155 if (time.tv_sec > nuidp->nu_timestamp.tv_sec || 1156 (time.tv_sec == nuidp->nu_timestamp.tv_sec && 1157 time.tv_usec > nuidp->nu_timestamp.tv_usec)) 1158 nuidp->nu_timestamp = time; 1159 else 1160 nuidp->nu_timestamp.tv_usec++; 1161 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec); 1162 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec); 1163 1164 /* 1165 * Now encrypt the timestamp verifier in ecb mode using the session 1166 * key. 1167 */ 1168 #ifdef NFSKERB 1169 XXX 1170 #endif 1171 1172 *verfp++ = ktvout.tv_sec; 1173 *verfp++ = ktvout.tv_usec; 1174 *verfp = 0; 1175 return (0); 1176 } 1177 1178 /* 1179 * Save the current nickname in a hash list entry on the mount point. 1180 */ 1181 int 1182 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep) 1183 struct nfsmount *nmp; 1184 struct ucred *cred; 1185 int len; 1186 NFSKERBKEY_T key; 1187 struct mbuf **mdp; 1188 char **dposp; 1189 struct mbuf *mrep; 1190 { 1191 struct nfsuid *nuidp; 1192 u_int32_t *tl; 1193 int32_t t1; 1194 struct mbuf *md = *mdp; 1195 struct timeval ktvin, ktvout; 1196 u_int32_t nick; 1197 char *dpos = *dposp, *cp2; 1198 int deltasec, error = 0; 1199 1200 if (len == (3 * NFSX_UNSIGNED)) { 1201 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1202 ktvin.tv_sec = *tl++; 1203 ktvin.tv_usec = *tl++; 1204 nick = fxdr_unsigned(u_int32_t, *tl); 1205 1206 /* 1207 * Decrypt the timestamp in ecb mode. 1208 */ 1209 #ifdef NFSKERB 1210 XXX 1211 #endif 1212 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec); 1213 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec); 1214 deltasec = time.tv_sec - ktvout.tv_sec; 1215 if (deltasec < 0) 1216 deltasec = -deltasec; 1217 /* 1218 * If ok, add it to the hash list for the mount point. 1219 */ 1220 if (deltasec <= NFS_KERBCLOCKSKEW) { 1221 if (nmp->nm_numuids < nuidhash_max) { 1222 nmp->nm_numuids++; 1223 nuidp = (struct nfsuid *) 1224 malloc(sizeof (struct nfsuid), M_NFSUID, 1225 M_WAITOK); 1226 } else { 1227 nuidp = nmp->nm_uidlruhead.tqh_first; 1228 LIST_REMOVE(nuidp, nu_hash); 1229 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, 1230 nu_lru); 1231 } 1232 nuidp->nu_flag = 0; 1233 nuidp->nu_cr.cr_uid = cred->cr_uid; 1234 nuidp->nu_expire = time.tv_sec + NFS_KERBTTL; 1235 nuidp->nu_timestamp = ktvout; 1236 nuidp->nu_nickname = nick; 1237 memcpy(nuidp->nu_key, key, sizeof (key)); 1238 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, 1239 nu_lru); 1240 LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid), 1241 nuidp, nu_hash); 1242 } 1243 } else 1244 nfsm_adv(nfsm_rndup(len)); 1245 nfsmout: 1246 *mdp = md; 1247 *dposp = dpos; 1248 return (error); 1249 } 1250 #endif /* NFS */ 1251
Indexes created Tue Oct 21 15:09:54 GMT 2025