sys/vfs/nfs/nfs_syscalls.c

   1 /*
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Rick Macklem at The University of Guelph.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)nfs_syscalls.c      8.5 (Berkeley) 3/30/95
  37  * $FreeBSD: src/sys/nfs/nfs_syscalls.c,v 1.58.2.1 2000/11/26 02:30:06 dillon Exp $
  38  * $DragonFly: src/sys/vfs/nfs/nfs_syscalls.c,v 1.2 2003/06/17 04:28:54 dillon Exp $
  39  */
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/sysproto.h>
  44 #include <sys/kernel.h>
  45 #include <sys/sysctl.h>
  46 #include <sys/file.h>
  47 #include <sys/filedesc.h>
  48 #include <sys/vnode.h>
  49 #include <sys/malloc.h>
  50 #include <sys/mount.h>
  51 #include <sys/proc.h>
  52 #include <sys/buf.h>
  53 #include <sys/mbuf.h>
  54 #include <sys/socket.h>
  55 #include <sys/socketvar.h>
  56 #include <sys/domain.h>
  57 #include <sys/protosw.h>
  58 #include <sys/namei.h>
  59 #include <vm/vm_zone.h>
  60
  61 #include <netinet/in.h>
  62 #include <netinet/tcp.h>
  63 #include <nfs/xdr_subs.h>
  64 #include <nfs/rpcv2.h>
  65 #include <nfs/nfsproto.h>
  66 #include <nfs/nfs.h>
  67 #include <nfs/nfsm_subs.h>
  68 #include <nfs/nfsrvcache.h>
  69 #include <nfs/nfsmount.h>
  70 #include <nfs/nfsnode.h>
  71 #include <nfs/nqnfs.h>
  72 #include <nfs/nfsrtt.h>
  73
  74 static MALLOC_DEFINE(M_NFSSVC, "NFS srvsock", "Nfs server structure");
  75
  76 /* Global defs. */
  77 extern int32_t (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *nd,
  78                                             struct nfssvc_sock *slp,
  79                                             struct proc *procp,
  80                                             struct mbuf **mreqp));
  81 extern int nfs_numasync;
  82 extern time_t nqnfsstarttime;
  83 extern int nqsrv_writeslack;
  84 extern int nfsrtton;
  85 extern struct nfsstats nfsstats;
  86 extern int nfsrvw_procrastinate;
  87 extern int nfsrvw_procrastinate_v3;
  88 static int nuidhash_max = NFS_MAXUIDHASH;
  89
  90 #ifndef NFS_NOSERVER
  91 static void     nfsrv_zapsock __P((struct nfssvc_sock *slp));
  92 #endif
  93 static int      nfssvc_iod __P((struct proc *));
  94
  95 #define TRUE    1
  96 #define FALSE   0
  97
  98 static int nfs_asyncdaemon[NFS_MAXASYNCDAEMON];
  99
 100 SYSCTL_DECL(_vfs_nfs);
 101
 102 #ifndef NFS_NOSERVER
 103 int nfsd_waiting = 0;
 104 static struct nfsdrt nfsdrt;
 105 static int nfs_numnfsd = 0;
 106 static int notstarted = 1;
 107 static int modify_flag = 0;
 108 static void     nfsd_rt __P((int sotype, struct nfsrv_descript *nd,
 109                              int cacherep));
 110 static int      nfssvc_addsock __P((struct file *, struct sockaddr *,
 111                                     struct proc *));
 112 static int      nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *));
 113
 114 static int nfs_privport = 0;
 115 SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, "");
 116 SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, "");
 117 SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, "");
 118
 119 /*
 120  * NFS server system calls
 121  */
 122
 123 #endif /* NFS_NOSERVER */
 124 /*
 125  * Nfs server psuedo system call for the nfsd's
 126  * Based on the flag value it either:
 127  * - adds a socket to the selection list
 128  * - remains in the kernel as an nfsd
 129  * - remains in the kernel as an nfsiod
 130  */
 131 #ifndef _SYS_SYSPROTO_H_
 132 struct nfssvc_args {
 133         int flag;
 134         caddr_t argp;
 135 };
 136 #endif
 137 int
 138 nfssvc(p, uap)
 139         struct proc *p;
 140         register struct nfssvc_args *uap;
 141 {
 142 #ifndef NFS_NOSERVER
 143         struct nameidata nd;
 144         struct file *fp;
 145         struct sockaddr *nam;
 146         struct nfsd_args nfsdarg;
 147         struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs;
 148         struct nfsd_cargs ncd;
 149         struct nfsd *nfsd;
 150         struct nfssvc_sock *slp;
 151         struct nfsuid *nuidp;
 152         struct nfsmount *nmp;
 153 #endif /* NFS_NOSERVER */
 154         int error;
 155
 156         /*
 157          * Must be super user
 158          */
 159         error = suser(p);
 160         if(error)
 161                 return (error);
 162         while (nfssvc_sockhead_flag & SLP_INIT) {
 163                  nfssvc_sockhead_flag |= SLP_WANTINIT;
 164                 (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0);
 165         }
 166         if (uap->flag & NFSSVC_BIOD)
 167                 error = nfssvc_iod(p);
 168 #ifdef NFS_NOSERVER
 169         else
 170                 error = ENXIO;
 171 #else /* !NFS_NOSERVER */
 172         else if (uap->flag & NFSSVC_MNTD) {
 173                 error = copyin(uap->argp, (caddr_t)&ncd, sizeof (ncd));
 174                 if (error)
 175                         return (error);
 176                 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
 177                         ncd.ncd_dirp, p);
 178                 error = namei(&nd);
 179                 if (error)
 180                         return (error);
 181                 NDFREE(&nd, NDF_ONLY_PNBUF);
 182                 if ((nd.ni_vp->v_flag & VROOT) == 0)
 183                         error = EINVAL;
 184                 nmp = VFSTONFS(nd.ni_vp->v_mount);
 185                 vput(nd.ni_vp);
 186                 if (error)
 187                         return (error);
 188                 if ((nmp->nm_state & NFSSTA_MNTD) &&
 189                         (uap->flag & NFSSVC_GOTAUTH) == 0)
 190                         return (0);
 191                 nmp->nm_state |= NFSSTA_MNTD;
 192                 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, uap->flag,
 193                         uap->argp, p);
 194         } else if (uap->flag & NFSSVC_ADDSOCK) {
 195                 error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof(nfsdarg));
 196                 if (error)
 197                         return (error);
 198                 error = holdsock(p->p_fd, nfsdarg.sock, &fp);
 199                 if (error)
 200                         return (error);
 201                 /*
 202                  * Get the client address for connected sockets.
 203                  */
 204                 if (nfsdarg.name == NULL || nfsdarg.namelen == 0)
 205                         nam = (struct sockaddr *)0;
 206                 else {
 207                         error = getsockaddr(&nam, nfsdarg.name,
 208                                             nfsdarg.namelen);
 209                         if (error) {
 210                                 fdrop(fp, p);
 211                                 return (error);
 212                         }
 213                 }
 214                 error = nfssvc_addsock(fp, nam, p);
 215                 fdrop(fp, p);
 216         } else {
 217                 error = copyin(uap->argp, (caddr_t)nsd, sizeof (*nsd));
 218                 if (error)
 219                         return (error);
 220                 if ((uap->flag & NFSSVC_AUTHIN) &&
 221                     ((nfsd = nsd->nsd_nfsd)) != NULL &&
 222                     (nfsd->nfsd_slp->ns_flag & SLP_VALID)) {
 223                         slp = nfsd->nfsd_slp;
 224
 225                         /*
 226                          * First check to see if another nfsd has already
 227                          * added this credential.
 228                          */
 229                         for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first;
 230                             nuidp != 0; nuidp = nuidp->nu_hash.le_next) {
 231                                 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid &&
 232                                     (!nfsd->nfsd_nd->nd_nam2 ||
 233                                      netaddr_match(NU_NETFAM(nuidp),
 234                                      &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2)))
 235                                         break;
 236                         }
 237                         if (nuidp) {
 238                             nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr);
 239                             nfsd->nfsd_nd->nd_flag |= ND_KERBFULL;
 240                         } else {
 241                             /*
 242                              * Nope, so we will.
 243                              */
 244                             if (slp->ns_numuids < nuidhash_max) {
 245                                 slp->ns_numuids++;
 246                                 nuidp = (struct nfsuid *)
 247                                    malloc(sizeof (struct nfsuid), M_NFSUID,
 248                                         M_WAITOK);
 249                             } else
 250                                 nuidp = (struct nfsuid *)0;
 251                             if ((slp->ns_flag & SLP_VALID) == 0) {
 252                                 if (nuidp)
 253                                     free((caddr_t)nuidp, M_NFSUID);
 254                             } else {
 255                                 if (nuidp == (struct nfsuid *)0) {
 256                                     nuidp = slp->ns_uidlruhead.tqh_first;
 257                                     LIST_REMOVE(nuidp, nu_hash);
 258                                     TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp,
 259                                         nu_lru);
 260                                     if (nuidp->nu_flag & NU_NAM)
 261                                         FREE(nuidp->nu_nam, M_SONAME);
 262                                 }
 263                                 nuidp->nu_flag = 0;
 264                                 nuidp->nu_cr = nsd->nsd_cr;
 265                                 if (nuidp->nu_cr.cr_ngroups > NGROUPS)
 266                                     nuidp->nu_cr.cr_ngroups = NGROUPS;
 267                                 nuidp->nu_cr.cr_ref = 1;
 268                                 nuidp->nu_timestamp = nsd->nsd_timestamp;
 269                                 nuidp->nu_expire = time_second + nsd->nsd_ttl;
 270                                 /*
 271                                  * and save the session key in nu_key.
 272                                  */
 273                                 bcopy(nsd->nsd_key, nuidp->nu_key,
 274                                     sizeof (nsd->nsd_key));
 275                                 if (nfsd->nfsd_nd->nd_nam2) {
 276                                     struct sockaddr_in *saddr;
 277
 278                                     saddr = (struct sockaddr_in *)
 279                                             nfsd->nfsd_nd->nd_nam2;
 280                                     switch (saddr->sin_family) {
 281                                     case AF_INET:
 282                                         nuidp->nu_flag |= NU_INETADDR;
 283                                         nuidp->nu_inetaddr =
 284                                              saddr->sin_addr.s_addr;
 285                                         break;
 286                                     case AF_ISO:
 287                                     default:
 288                                         nuidp->nu_flag |= NU_NAM;
 289                                         nuidp->nu_nam =
 290                                                 dup_sockaddr(nfsd->nfsd_nd->
 291                                                              nd_nam2, 1);
 292                                         break;
 293                                     };
 294                                 }
 295                                 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp,
 296                                         nu_lru);
 297                                 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid),
 298                                         nuidp, nu_hash);
 299                                 nfsrv_setcred(&nuidp->nu_cr,
 300                                     &nfsd->nfsd_nd->nd_cr);
 301                                 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL;
 302                             }
 303                         }
 304                 }
 305                 if ((uap->flag & NFSSVC_AUTHINFAIL) && (nfsd = nsd->nsd_nfsd))
 306                         nfsd->nfsd_flag |= NFSD_AUTHFAIL;
 307                 error = nfssvc_nfsd(nsd, uap->argp, p);
 308         }
 309 #endif /* NFS_NOSERVER */
 310         if (error == EINTR || error == ERESTART)
 311                 error = 0;
 312         return (error);
 313 }
 314
 315 #ifndef NFS_NOSERVER
 316 /*
 317  * Adds a socket to the list for servicing by nfsds.
 318  */
 319 static int
 320 nfssvc_addsock(fp, mynam, p)
 321         struct file *fp;
 322         struct sockaddr *mynam;
 323         struct proc *p;
 324 {
 325         register int siz;
 326         register struct nfssvc_sock *slp;
 327         register struct socket *so;
 328         int error, s;
 329
 330         so = (struct socket *)fp->f_data;
 331 #if 0
 332         tslp = (struct nfssvc_sock *)0;
 333         /*
 334          * Add it to the list, as required.
 335          */
 336         if (so->so_proto->pr_protocol == IPPROTO_UDP) {
 337                 tslp = nfs_udpsock;
 338                 if (tslp->ns_flag & SLP_VALID) {
 339                         if (mynam != NULL)
 340                                 FREE(mynam, M_SONAME);
 341                         return (EPERM);
 342                 }
 343         }
 344 #endif
 345         if (so->so_type == SOCK_STREAM)
 346                 siz = NFS_MAXPACKET + sizeof (u_long);
 347         else
 348                 siz = NFS_MAXPACKET;
 349         error = soreserve(so, siz, siz);
 350         if (error) {
 351                 if (mynam != NULL)
 352                         FREE(mynam, M_SONAME);
 353                 return (error);
 354         }
 355
 356         /*
 357          * Set protocol specific options { for now TCP only } and
 358          * reserve some space. For datagram sockets, this can get called
 359          * repeatedly for the same socket, but that isn't harmful.
 360          */
 361         if (so->so_type == SOCK_STREAM) {
 362                 struct sockopt sopt;
 363                 int val;
 364
 365                 bzero(&sopt, sizeof sopt);
 366                 sopt.sopt_level = SOL_SOCKET;
 367                 sopt.sopt_name = SO_KEEPALIVE;
 368                 sopt.sopt_val = &val;
 369                 sopt.sopt_valsize = sizeof val;
 370                 val = 1;
 371                 sosetopt(so, &sopt);
 372         }
 373         if (so->so_proto->pr_domain->dom_family == AF_INET &&
 374             so->so_proto->pr_protocol == IPPROTO_TCP) {
 375                 struct sockopt sopt;
 376                 int val;
 377
 378                 bzero(&sopt, sizeof sopt);
 379                 sopt.sopt_level = IPPROTO_TCP;
 380                 sopt.sopt_name = TCP_NODELAY;
 381                 sopt.sopt_val = &val;
 382                 sopt.sopt_valsize = sizeof val;
 383                 val = 1;
 384                 sosetopt(so, &sopt);
 385         }
 386         so->so_rcv.sb_flags &= ~SB_NOINTR;
 387         so->so_rcv.sb_timeo = 0;
 388         so->so_snd.sb_flags &= ~SB_NOINTR;
 389         so->so_snd.sb_timeo = 0;
 390
 391         slp = (struct nfssvc_sock *)
 392                 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
 393         bzero((caddr_t)slp, sizeof (struct nfssvc_sock));
 394         STAILQ_INIT(&slp->ns_rec);
 395         TAILQ_INIT(&slp->ns_uidlruhead);
 396         TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain);
 397
 398         slp->ns_so = so;
 399         slp->ns_nam = mynam;
 400         fp->f_count++;
 401         slp->ns_fp = fp;
 402         s = splnet();
 403         so->so_upcallarg = (caddr_t)slp;
 404         so->so_upcall = nfsrv_rcv;
 405         so->so_rcv.sb_flags |= SB_UPCALL;
 406         slp->ns_flag = (SLP_VALID | SLP_NEEDQ);
 407         nfsrv_wakenfsd(slp);
 408         splx(s);
 409         return (0);
 410 }
 411
 412 /*
 413  * Called by nfssvc() for nfsds. Just loops around servicing rpc requests
 414  * until it is killed by a signal.
 415  */
 416 static int
 417 nfssvc_nfsd(nsd, argp, p)
 418         struct nfsd_srvargs *nsd;
 419         caddr_t argp;
 420         struct proc *p;
 421 {
 422         register int siz;
 423         register struct nfssvc_sock *slp;
 424         struct nfsd *nfsd = nsd->nsd_nfsd;
 425         struct nfsrv_descript *nd = NULL;
 426         struct mbuf *m, *mreq;
 427         int error = 0, cacherep, s, sotype, writes_todo;
 428         int procrastinate;
 429         u_quad_t cur_usec;
 430
 431 #ifndef nolint
 432         cacherep = RC_DOIT;
 433         writes_todo = 0;
 434 #endif
 435         if (nfsd == (struct nfsd *)0) {
 436                 nsd->nsd_nfsd = nfsd = (struct nfsd *)
 437                         malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK);
 438                 bzero((caddr_t)nfsd, sizeof (struct nfsd));
 439                 s = splnet();
 440                 nfsd->nfsd_procp = p;
 441                 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain);
 442                 nfs_numnfsd++;
 443         } else
 444                 s = splnet();
 445
 446         /*
 447          * Loop getting rpc requests until SIGKILL.
 448          */
 449         for (;;) {
 450                 if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) {
 451                         while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 &&
 452                             (nfsd_head_flag & NFSD_CHECKSLP) == 0) {
 453                                 nfsd->nfsd_flag |= NFSD_WAITING;
 454                                 nfsd_waiting++;
 455                                 error = tsleep((caddr_t)nfsd, PSOCK | PCATCH,
 456                                     "nfsd", 0);
 457                                 nfsd_waiting--;
 458                                 if (error)
 459                                         goto done;
 460                         }
 461                         if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 &&
 462                             (nfsd_head_flag & NFSD_CHECKSLP) != 0) {
 463                                 for (slp = nfssvc_sockhead.tqh_first; slp != 0;
 464                                     slp = slp->ns_chain.tqe_next) {
 465                                     if ((slp->ns_flag & (SLP_VALID | SLP_DOREC))
 466                                         == (SLP_VALID | SLP_DOREC)) {
 467                                             slp->ns_flag &= ~SLP_DOREC;
 468                                             slp->ns_sref++;
 469                                             nfsd->nfsd_slp = slp;
 470                                             break;
 471                                     }
 472                                 }
 473                                 if (slp == 0)
 474                                         nfsd_head_flag &= ~NFSD_CHECKSLP;
 475                         }
 476                         if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0)
 477                                 continue;
 478                         if (slp->ns_flag & SLP_VALID) {
 479                                 if (slp->ns_flag & SLP_DISCONN)
 480                                         nfsrv_zapsock(slp);
 481                                 else if (slp->ns_flag & SLP_NEEDQ) {
 482                                         slp->ns_flag &= ~SLP_NEEDQ;
 483                                         (void) nfs_slplock(slp, 1);
 484                                         nfsrv_rcv(slp->ns_so, (caddr_t)slp,
 485                                                 M_WAIT);
 486                                         nfs_slpunlock(slp);
 487                                 }
 488                                 error = nfsrv_dorec(slp, nfsd, &nd);
 489                                 cur_usec = nfs_curusec();
 490                                 if (error && slp->ns_tq.lh_first &&
 491                                     slp->ns_tq.lh_first->nd_time <= cur_usec) {
 492                                         error = 0;
 493                                         cacherep = RC_DOIT;
 494                                         writes_todo = 1;
 495                                 } else
 496                                         writes_todo = 0;
 497                                 nfsd->nfsd_flag |= NFSD_REQINPROG;
 498                         }
 499                 } else {
 500                         error = 0;
 501                         slp = nfsd->nfsd_slp;
 502                 }
 503                 if (error || (slp->ns_flag & SLP_VALID) == 0) {
 504                         if (nd) {
 505                                 free((caddr_t)nd, M_NFSRVDESC);
 506                                 nd = NULL;
 507                         }
 508                         nfsd->nfsd_slp = (struct nfssvc_sock *)0;
 509                         nfsd->nfsd_flag &= ~NFSD_REQINPROG;
 510                         nfsrv_slpderef(slp);
 511                         continue;
 512                 }
 513                 splx(s);
 514                 sotype = slp->ns_so->so_type;
 515                 if (nd) {
 516                     getmicrotime(&nd->nd_starttime);
 517                     if (nd->nd_nam2)
 518                         nd->nd_nam = nd->nd_nam2;
 519                     else
 520                         nd->nd_nam = slp->ns_nam;
 521
 522                     /*
 523                      * Check to see if authorization is needed.
 524                      */
 525                     if (nfsd->nfsd_flag & NFSD_NEEDAUTH) {
 526                         nfsd->nfsd_flag &= ~NFSD_NEEDAUTH;
 527                         nsd->nsd_haddr =
 528                                 ((struct sockaddr_in *)
 529                                  nd->nd_nam)->sin_addr.s_addr;
 530                         nsd->nsd_authlen = nfsd->nfsd_authlen;
 531                         nsd->nsd_verflen = nfsd->nfsd_verflen;
 532                         if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr,
 533                                 nfsd->nfsd_authlen) &&
 534                             !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr,
 535                                 nfsd->nfsd_verflen) &&
 536                             !copyout((caddr_t)nsd, argp, sizeof (*nsd)))
 537                             return (ENEEDAUTH);
 538                         cacherep = RC_DROPIT;
 539                     } else
 540                         cacherep = nfsrv_getcache(nd, slp, &mreq);
 541
 542                     /*
 543                      * Check for just starting up for NQNFS and send
 544                      * fake "try again later" replies to the NQNFS clients.
 545                      */
 546                     if (notstarted && nqnfsstarttime <= time_second) {
 547                         if (modify_flag) {
 548                                 nqnfsstarttime = time_second + nqsrv_writeslack;
 549                                 modify_flag = 0;
 550                         } else
 551                                 notstarted = 0;
 552                     }
 553                     if (notstarted) {
 554                         if ((nd->nd_flag & ND_NQNFS) == 0)
 555                                 cacherep = RC_DROPIT;
 556                         else if (nd->nd_procnum != NFSPROC_WRITE) {
 557                                 nd->nd_procnum = NFSPROC_NOOP;
 558                                 nd->nd_repstat = NQNFS_TRYLATER;
 559                                 cacherep = RC_DOIT;
 560                         } else
 561                                 modify_flag = 1;
 562                     } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) {
 563                         nfsd->nfsd_flag &= ~NFSD_AUTHFAIL;
 564                         nd->nd_procnum = NFSPROC_NOOP;
 565                         nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
 566                         cacherep = RC_DOIT;
 567                     } else if (nfs_privport) {
 568                         /* Check if source port is privileged */
 569                         u_short port;
 570                         struct sockaddr *nam = nd->nd_nam;
 571                         struct sockaddr_in *sin;
 572
 573                         sin = (struct sockaddr_in *)nam;
 574                         port = ntohs(sin->sin_port);
 575                         if (port >= IPPORT_RESERVED &&
 576                             nd->nd_procnum != NFSPROC_NULL) {
 577                             nd->nd_procnum = NFSPROC_NOOP;
 578                             nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
 579                             cacherep = RC_DOIT;
 580                             printf("NFS request from unprivileged port (%s:%d)\n",
 581                                    inet_ntoa(sin->sin_addr), port);
 582                         }
 583                     }
 584
 585                 }
 586
 587                 /*
 588                  * Loop to get all the write rpc relies that have been
 589                  * gathered together.
 590                  */
 591                 do {
 592                     switch (cacherep) {
 593                     case RC_DOIT:
 594                         if (nd && (nd->nd_flag & ND_NFSV3))
 595                             procrastinate = nfsrvw_procrastinate_v3;
 596                         else
 597                             procrastinate = nfsrvw_procrastinate;
 598                         if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE &&
 599                             procrastinate > 0 && !notstarted))
 600                             error = nfsrv_writegather(&nd, slp,
 601                                 nfsd->nfsd_procp, &mreq);
 602                         else
 603                             error = (*(nfsrv3_procs[nd->nd_procnum]))(nd,
 604                                 slp, nfsd->nfsd_procp, &mreq);
 605                         if (mreq == NULL)
 606                                 break;
 607                         if (error != 0 && error != NFSERR_RETVOID) {
 608                                 if (nd->nd_procnum != NQNFSPROC_VACATED)
 609                                         nfsstats.srv_errs++;
 610                                 nfsrv_updatecache(nd, FALSE, mreq);
 611                                 if (nd->nd_nam2)
 612                                         FREE(nd->nd_nam2, M_SONAME);
 613                                 break;
 614                         }
 615                         nfsstats.srvrpccnt[nd->nd_procnum]++;
 616                         nfsrv_updatecache(nd, TRUE, mreq);
 617                         nd->nd_mrep = (struct mbuf *)0;
 618                     case RC_REPLY:
 619                         m = mreq;
 620                         siz = 0;
 621                         while (m) {
 622                                 siz += m->m_len;
 623                                 m = m->m_next;
 624                         }
 625                         if (siz <= 0 || siz > NFS_MAXPACKET) {
 626                                 printf("mbuf siz=%d\n",siz);
 627                                 panic("Bad nfs svc reply");
 628                         }
 629                         m = mreq;
 630                         m->m_pkthdr.len = siz;
 631                         m->m_pkthdr.rcvif = (struct ifnet *)0;
 632                         /*
 633                          * For stream protocols, prepend a Sun RPC
 634                          * Record Mark.
 635                          */
 636                         if (sotype == SOCK_STREAM) {
 637                                 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT);
 638                                 *mtod(m, u_int32_t *) = htonl(0x80000000 | siz);
 639                         }
 640                         if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED)
 641                                 (void) nfs_slplock(slp, 1);
 642                         if (slp->ns_flag & SLP_VALID)
 643                             error = nfs_send(slp->ns_so, nd->nd_nam2, m, NULL);
 644                         else {
 645                             error = EPIPE;
 646                             m_freem(m);
 647                         }
 648                         if (nfsrtton)
 649                                 nfsd_rt(sotype, nd, cacherep);
 650                         if (nd->nd_nam2)
 651                                 FREE(nd->nd_nam2, M_SONAME);
 652                         if (nd->nd_mrep)
 653                                 m_freem(nd->nd_mrep);
 654                         if (error == EPIPE)
 655                                 nfsrv_zapsock(slp);
 656                         if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED)
 657                                 nfs_slpunlock(slp);
 658                         if (error == EINTR || error == ERESTART) {
 659                                 free((caddr_t)nd, M_NFSRVDESC);
 660                                 nfsrv_slpderef(slp);
 661                                 s = splnet();
 662                                 goto done;
 663                         }
 664                         break;
 665                     case RC_DROPIT:
 666                         if (nfsrtton)
 667                                 nfsd_rt(sotype, nd, cacherep);
 668                         m_freem(nd->nd_mrep);
 669                         if (nd->nd_nam2)
 670                                 FREE(nd->nd_nam2, M_SONAME);
 671                         break;
 672                     };
 673                     if (nd) {
 674                         FREE((caddr_t)nd, M_NFSRVDESC);
 675                         nd = NULL;
 676                     }
 677
 678                     /*
 679                      * Check to see if there are outstanding writes that
 680                      * need to be serviced.
 681                      */
 682                     cur_usec = nfs_curusec();
 683                     s = splsoftclock();
 684                     if (slp->ns_tq.lh_first &&
 685                         slp->ns_tq.lh_first->nd_time <= cur_usec) {
 686                         cacherep = RC_DOIT;
 687                         writes_todo = 1;
 688                     } else
 689                         writes_todo = 0;
 690                     splx(s);
 691                 } while (writes_todo);
 692                 s = splnet();
 693                 if (nfsrv_dorec(slp, nfsd, &nd)) {
 694                         nfsd->nfsd_flag &= ~NFSD_REQINPROG;
 695                         nfsd->nfsd_slp = NULL;
 696                         nfsrv_slpderef(slp);
 697                 }
 698         }
 699 done:
 700         TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain);
 701         splx(s);
 702         free((caddr_t)nfsd, M_NFSD);
 703         nsd->nsd_nfsd = (struct nfsd *)0;
 704         if (--nfs_numnfsd == 0)
 705                 nfsrv_init(TRUE);       /* Reinitialize everything */
 706         return (error);
 707 }
 708
 709 /*
 710  * Shut down a socket associated with an nfssvc_sock structure.
 711  * Should be called with the send lock set, if required.
 712  * The trick here is to increment the sref at the start, so that the nfsds
 713  * will stop using it and clear ns_flag at the end so that it will not be
 714  * reassigned during cleanup.
 715  */
 716 static void
 717 nfsrv_zapsock(slp)
 718         register struct nfssvc_sock *slp;
 719 {
 720         register struct nfsuid *nuidp, *nnuidp;
 721         register struct nfsrv_descript *nwp, *nnwp;
 722         struct socket *so;
 723         struct file *fp;
 724         struct nfsrv_rec *rec;
 725         int s;
 726
 727         slp->ns_flag &= ~SLP_ALLFLAGS;
 728         fp = slp->ns_fp;
 729         if (fp) {
 730                 slp->ns_fp = (struct file *)0;
 731                 so = slp->ns_so;
 732                 so->so_rcv.sb_flags &= ~SB_UPCALL;
 733                 so->so_upcall = NULL;
 734                 so->so_upcallarg = NULL;
 735                 soshutdown(so, 2);
 736                 closef(fp, (struct proc *)0);
 737                 if (slp->ns_nam)
 738                         FREE(slp->ns_nam, M_SONAME);
 739                 m_freem(slp->ns_raw);
 740                 while ((rec = STAILQ_FIRST(&slp->ns_rec)) != NULL) {
 741                         STAILQ_REMOVE_HEAD(&slp->ns_rec, nr_link);
 742                         if (rec->nr_address)
 743                                 FREE(rec->nr_address, M_SONAME);
 744                         m_freem(rec->nr_packet);
 745                         free(rec, M_NFSRVDESC);
 746                 }
 747                 for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0;
 748                     nuidp = nnuidp) {
 749                         nnuidp = nuidp->nu_lru.tqe_next;
 750                         LIST_REMOVE(nuidp, nu_hash);
 751                         TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru);
 752                         if (nuidp->nu_flag & NU_NAM)
 753                                 FREE(nuidp->nu_nam, M_SONAME);
 754                         free((caddr_t)nuidp, M_NFSUID);
 755                 }
 756                 s = splsoftclock();
 757                 for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) {
 758                         nnwp = nwp->nd_tq.le_next;
 759                         LIST_REMOVE(nwp, nd_tq);
 760                         free((caddr_t)nwp, M_NFSRVDESC);
 761                 }
 762                 LIST_INIT(&slp->ns_tq);
 763                 splx(s);
 764         }
 765 }
 766
 767 /*
 768  * Derefence a server socket structure. If it has no more references and
 769  * is no longer valid, you can throw it away.
 770  */
 771 void
 772 nfsrv_slpderef(slp)
 773         register struct nfssvc_sock *slp;
 774 {
 775         if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) {
 776                 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain);
 777                 free((caddr_t)slp, M_NFSSVC);
 778         }
 779 }
 780
 781 /*
 782  * Lock a socket against others.
 783  */
 784 int
 785 nfs_slplock(slp, wait)
 786         register struct nfssvc_sock *slp;
 787         int wait;
 788 {
 789         int *statep = &slp->ns_solock;
 790
 791         if (!wait && (*statep & NFSSTA_SNDLOCK))
 792                 return(0);      /* already locked, fail */
 793         while (*statep & NFSSTA_SNDLOCK) {
 794                 *statep |= NFSSTA_WANTSND;
 795                 (void) tsleep((caddr_t)statep, PZERO - 1, "nfsslplck", 0);
 796         }
 797         *statep |= NFSSTA_SNDLOCK;
 798         return (1);
 799 }
 800
 801 /*
 802  * Unlock the stream socket for others.
 803  */
 804 void
 805 nfs_slpunlock(slp)
 806         register struct nfssvc_sock *slp;
 807 {
 808         int *statep = &slp->ns_solock;
 809
 810         if ((*statep & NFSSTA_SNDLOCK) == 0)
 811                 panic("nfs slpunlock");
 812         *statep &= ~NFSSTA_SNDLOCK;
 813         if (*statep & NFSSTA_WANTSND) {
 814                 *statep &= ~NFSSTA_WANTSND;
 815                 wakeup((caddr_t)statep);
 816         }
 817 }
 818
 819 /*
 820  * Initialize the data structures for the server.
 821  * Handshake with any new nfsds starting up to avoid any chance of
 822  * corruption.
 823  */
 824 void
 825 nfsrv_init(terminating)
 826         int terminating;
 827 {
 828         register struct nfssvc_sock *slp, *nslp;
 829
 830         if (nfssvc_sockhead_flag & SLP_INIT)
 831                 panic("nfsd init");
 832         nfssvc_sockhead_flag |= SLP_INIT;
 833         if (terminating) {
 834                 for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) {
 835                         nslp = slp->ns_chain.tqe_next;
 836                         if (slp->ns_flag & SLP_VALID)
 837                                 nfsrv_zapsock(slp);
 838                         TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain);
 839                         free((caddr_t)slp, M_NFSSVC);
 840                 }
 841                 nfsrv_cleancache();     /* And clear out server cache */
 842         } else
 843                 nfs_pub.np_valid = 0;
 844
 845         TAILQ_INIT(&nfssvc_sockhead);
 846         nfssvc_sockhead_flag &= ~SLP_INIT;
 847         if (nfssvc_sockhead_flag & SLP_WANTINIT) {
 848                 nfssvc_sockhead_flag &= ~SLP_WANTINIT;
 849                 wakeup((caddr_t)&nfssvc_sockhead);
 850         }
 851
 852         TAILQ_INIT(&nfsd_head);
 853         nfsd_head_flag &= ~NFSD_CHECKSLP;
 854
 855 #if 0
 856         nfs_udpsock = (struct nfssvc_sock *)
 857             malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
 858         bzero((caddr_t)nfs_udpsock, sizeof (struct nfssvc_sock));
 859         STAILQ_INIT(&nfs_udpsock->ns_rec);
 860         TAILQ_INIT(&nfs_udpsock->ns_uidlruhead);
 861         TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain);
 862
 863         nfs_cltpsock = (struct nfssvc_sock *)
 864             malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
 865         bzero((caddr_t)nfs_cltpsock, sizeof (struct nfssvc_sock));
 866         STAILQ_INIT(&nfs_cltpsock->ns_rec);
 867         TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead);
 868         TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain);
 869 #endif
 870 }
 871
 872 /*
 873  * Add entries to the server monitor log.
 874  */
 875 static void
 876 nfsd_rt(sotype, nd, cacherep)
 877         int sotype;
 878         register struct nfsrv_descript *nd;
 879         int cacherep;
 880 {
 881         register struct drt *rt;
 882
 883         rt = &nfsdrt.drt[nfsdrt.pos];
 884         if (cacherep == RC_DOIT)
 885                 rt->flag = 0;
 886         else if (cacherep == RC_REPLY)
 887                 rt->flag = DRT_CACHEREPLY;
 888         else
 889                 rt->flag = DRT_CACHEDROP;
 890         if (sotype == SOCK_STREAM)
 891                 rt->flag |= DRT_TCP;
 892         if (nd->nd_flag & ND_NQNFS)
 893                 rt->flag |= DRT_NQNFS;
 894         else if (nd->nd_flag & ND_NFSV3)
 895                 rt->flag |= DRT_NFSV3;
 896         rt->proc = nd->nd_procnum;
 897         if (nd->nd_nam->sa_family == AF_INET)
 898             rt->ipadr = ((struct sockaddr_in *)nd->nd_nam)->sin_addr.s_addr;
 899         else
 900             rt->ipadr = INADDR_ANY;
 901         rt->resptime = nfs_curusec() - (nd->nd_starttime.tv_sec * 1000000 + nd->nd_starttime.tv_usec);
 902         getmicrotime(&rt->tstamp);
 903         nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ;
 904 }
 905 #endif /* NFS_NOSERVER */
 906
 907 static int nfs_defect = 0;
 908 SYSCTL_INT(_vfs_nfs, OID_AUTO, defect, CTLFLAG_RW, &nfs_defect, 0, "");
 909
 910 /*
 911  * Asynchronous I/O daemons for client nfs.
 912  * They do read-ahead and write-behind operations on the block I/O cache.
 913  * Never returns unless it fails or gets killed.
 914  */
 915 static int
 916 nfssvc_iod(p)
 917         struct proc *p;
 918 {
 919         register struct buf *bp;
 920         register int i, myiod;
 921         struct nfsmount *nmp;
 922         int error = 0;
 923
 924         /*
 925          * Assign my position or return error if too many already running
 926          */
 927         myiod = -1;
 928         for (i = 0; i < NFS_MAXASYNCDAEMON; i++)
 929                 if (nfs_asyncdaemon[i] == 0) {
 930                         nfs_asyncdaemon[i]++;
 931                         myiod = i;
 932                         break;
 933                 }
 934         if (myiod == -1)
 935                 return (EBUSY);
 936         nfs_numasync++;
 937         /*
 938          * Just loop around doin our stuff until SIGKILL
 939          */
 940         for (;;) {
 941             while (((nmp = nfs_iodmount[myiod]) == NULL
 942                     || nmp->nm_bufq.tqh_first == NULL)
 943                    && error == 0) {
 944                 if (nmp)
 945                     nmp->nm_bufqiods--;
 946                 nfs_iodwant[myiod] = p;
 947                 nfs_iodmount[myiod] = NULL;
 948                 error = tsleep((caddr_t)&nfs_iodwant[myiod],
 949                         PWAIT | PCATCH, "nfsidl", 0);
 950             }
 951             if (error) {
 952                 nfs_asyncdaemon[myiod] = 0;
 953                 if (nmp)
 954                     nmp->nm_bufqiods--;
 955                 nfs_iodwant[myiod] = NULL;
 956                 nfs_iodmount[myiod] = NULL;
 957                 nfs_numasync--;
 958                 return (error);
 959             }
 960             while ((bp = nmp->nm_bufq.tqh_first) != NULL) {
 961                 /* Take one off the front of the list */
 962                 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist);
 963                 nmp->nm_bufqlen--;
 964                 if (nmp->nm_bufqwant && nmp->nm_bufqlen <= nfs_numasync) {
 965                     nmp->nm_bufqwant = FALSE;
 966                     wakeup(&nmp->nm_bufq);
 967                 }
 968                 if (bp->b_flags & B_READ)
 969                     (void) nfs_doio(bp, bp->b_rcred, (struct proc *)0);
 970                 else
 971                     (void) nfs_doio(bp, bp->b_wcred, (struct proc *)0);
 972                 /*
 973                  * If there are more than one iod on this mount, then defect
 974                  * so that the iods can be shared out fairly between the mounts
 975                  */
 976                 if (nfs_defect && nmp->nm_bufqiods > 1) {
 977                     NFS_DPF(ASYNCIO,
 978                             ("nfssvc_iod: iod %d defecting from mount %p\n",
 979                              myiod, nmp));
 980                     nfs_iodmount[myiod] = NULL;
 981                     nmp->nm_bufqiods--;
 982                     break;
 983                 }
 984             }
 985         }
 986 }
 987
 988
 989 /*
 990  * Get an authorization string for the uid by having the mount_nfs sitting
 991  * on this mount point porpous out of the kernel and do it.
 992  */
 993 int
 994 nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key)
 995         register struct nfsmount *nmp;
 996         struct nfsreq *rep;
 997         struct ucred *cred;
 998         char **auth_str;
 999         int *auth_len;
1000         char *verf_str;
1001         int *verf_len;
1002         NFSKERBKEY_T key;               /* return session key */
1003 {
1004         int error = 0;
1005
1006         while ((nmp->nm_state & NFSSTA_WAITAUTH) == 0) {
1007                 nmp->nm_state |= NFSSTA_WANTAUTH;
1008                 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK,
1009                         "nfsauth1", 2 * hz);
1010                 error = nfs_sigintr(nmp, rep, rep->r_procp);
1011                 if (error) {
1012                         nmp->nm_state &= ~NFSSTA_WANTAUTH;
1013                         return (error);
1014                 }
1015         }
1016         nmp->nm_state &= ~(NFSSTA_WAITAUTH | NFSSTA_WANTAUTH);
1017         nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK);
1018         nmp->nm_authlen = RPCAUTH_MAXSIZ;
1019         nmp->nm_verfstr = verf_str;
1020         nmp->nm_verflen = *verf_len;
1021         nmp->nm_authuid = cred->cr_uid;
1022         wakeup((caddr_t)&nmp->nm_authstr);
1023
1024         /*
1025          * And wait for mount_nfs to do its stuff.
1026          */
1027         while ((nmp->nm_state & NFSSTA_HASAUTH) == 0 && error == 0) {
1028                 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK,
1029                         "nfsauth2", 2 * hz);
1030                 error = nfs_sigintr(nmp, rep, rep->r_procp);
1031         }
1032         if (nmp->nm_state & NFSSTA_AUTHERR) {
1033                 nmp->nm_state &= ~NFSSTA_AUTHERR;
1034                 error = EAUTH;
1035         }
1036         if (error)
1037                 free((caddr_t)*auth_str, M_TEMP);
1038         else {
1039                 *auth_len = nmp->nm_authlen;
1040                 *verf_len = nmp->nm_verflen;
1041                 bcopy((caddr_t)nmp->nm_key, (caddr_t)key, sizeof (key));
1042         }
1043         nmp->nm_state &= ~NFSSTA_HASAUTH;
1044         nmp->nm_state |= NFSSTA_WAITAUTH;
1045         if (nmp->nm_state & NFSSTA_WANTAUTH) {
1046                 nmp->nm_state &= ~NFSSTA_WANTAUTH;
1047                 wakeup((caddr_t)&nmp->nm_authtype);
1048         }
1049         return (error);
1050 }
1051
1052 /*
1053  * Get a nickname authenticator and verifier.
1054  */
1055 int
1056 nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len)
1057         struct nfsmount *nmp;
1058         struct ucred *cred;
1059         char **auth_str;
1060         int *auth_len;
1061         char *verf_str;
1062         int verf_len;
1063 {
1064         register struct nfsuid *nuidp;
1065         register u_int32_t *nickp, *verfp;
1066         struct timeval ktvin, ktvout;
1067
1068 #ifdef DIAGNOSTIC
1069         if (verf_len < (4 * NFSX_UNSIGNED))
1070                 panic("nfs_getnickauth verf too small");
1071 #endif
1072         for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first;
1073             nuidp != 0; nuidp = nuidp->nu_hash.le_next) {
1074                 if (nuidp->nu_cr.cr_uid == cred->cr_uid)
1075                         break;
1076         }
1077         if (!nuidp || nuidp->nu_expire < time_second)
1078                 return (EACCES);
1079
1080         /*
1081          * Move to the end of the lru list (end of lru == most recently used).
1082          */
1083         TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru);
1084         TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru);
1085
1086         nickp = (u_int32_t *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK);
1087         *nickp++ = txdr_unsigned(RPCAKN_NICKNAME);
1088         *nickp = txdr_unsigned(nuidp->nu_nickname);
1089         *auth_str = (char *)nickp;
1090         *auth_len = 2 * NFSX_UNSIGNED;
1091
1092         /*
1093          * Now we must encrypt the verifier and package it up.
1094          */
1095         verfp = (u_int32_t *)verf_str;
1096         *verfp++ = txdr_unsigned(RPCAKN_NICKNAME);
1097         if (time_second > nuidp->nu_timestamp.tv_sec ||
1098             (time_second == nuidp->nu_timestamp.tv_sec &&
1099              time_second > nuidp->nu_timestamp.tv_usec))
1100                 getmicrotime(&nuidp->nu_timestamp);
1101         else
1102                 nuidp->nu_timestamp.tv_usec++;
1103         ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec);
1104         ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec);
1105
1106         /*
1107          * Now encrypt the timestamp verifier in ecb mode using the session
1108          * key.
1109          */
1110 #ifdef NFSKERB
1111         XXX
1112 #endif
1113
1114         *verfp++ = ktvout.tv_sec;
1115         *verfp++ = ktvout.tv_usec;
1116         *verfp = 0;
1117         return (0);
1118 }
1119
1120 /*
1121  * Save the current nickname in a hash list entry on the mount point.
1122  */
1123 int
1124 nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep)
1125         register struct nfsmount *nmp;
1126         struct ucred *cred;
1127         int len;
1128         NFSKERBKEY_T key;
1129         struct mbuf **mdp;
1130         char **dposp;
1131         struct mbuf *mrep;
1132 {
1133         register struct nfsuid *nuidp;
1134         register u_int32_t *tl;
1135         register int32_t t1;
1136         struct mbuf *md = *mdp;
1137         struct timeval ktvin, ktvout;
1138         u_int32_t nick;
1139         char *dpos = *dposp, *cp2;
1140         int deltasec, error = 0;
1141
1142         if (len == (3 * NFSX_UNSIGNED)) {
1143                 nfsm_dissect(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1144                 ktvin.tv_sec = *tl++;
1145                 ktvin.tv_usec = *tl++;
1146                 nick = fxdr_unsigned(u_int32_t, *tl);
1147
1148                 /*
1149                  * Decrypt the timestamp in ecb mode.
1150                  */
1151 #ifdef NFSKERB
1152                 XXX
1153 #endif
1154                 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec);
1155                 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec);
1156                 deltasec = time_second - ktvout.tv_sec;
1157                 if (deltasec < 0)
1158                         deltasec = -deltasec;
1159                 /*
1160                  * If ok, add it to the hash list for the mount point.
1161                  */
1162                 if (deltasec <= NFS_KERBCLOCKSKEW) {
1163                         if (nmp->nm_numuids < nuidhash_max) {
1164                                 nmp->nm_numuids++;
1165                                 nuidp = (struct nfsuid *)
1166                                    malloc(sizeof (struct nfsuid), M_NFSUID,
1167                                         M_WAITOK);
1168                         } else {
1169                                 nuidp = nmp->nm_uidlruhead.tqh_first;
1170                                 LIST_REMOVE(nuidp, nu_hash);
1171                                 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp,
1172                                         nu_lru);
1173                         }
1174                         nuidp->nu_flag = 0;
1175                         nuidp->nu_cr.cr_uid = cred->cr_uid;
1176                         nuidp->nu_expire = time_second + NFS_KERBTTL;
1177                         nuidp->nu_timestamp = ktvout;
1178                         nuidp->nu_nickname = nick;
1179                         bcopy(key, nuidp->nu_key, sizeof (key));
1180                         TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp,
1181                                 nu_lru);
1182                         LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid),
1183                                 nuidp, nu_hash);
1184                 }
1185         } else
1186                 nfsm_adv(nfsm_rndup(len));
1187 nfsmout:
1188         *mdp = md;
1189         *dposp = dpos;
1190         return (error);
1191 }