mount/nfsmount.c

   1 /*
   2  * nfsmount.c -- Linux NFS mount
   3  * Copyright (C) 1993 Rick Sladkey <jrs@world.std.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2, or (at your option)
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * Wed Feb  8 12:51:48 1995, biro@yggdrasil.com (Ross Biro): allow all port
  16  * numbers to be specified on the command line.
  17  *
  18  * Fri, 8 Mar 1996 18:01:39, Swen Thuemmler <swen@uni-paderborn.de>:
  19  * Omit the call to connect() for Linux version 1.3.11 or later.
  20  *
  21  * Wed Oct  1 23:55:28 1997: Dick Streefland <dick_streefland@tasking.com>
  22  * Implemented the "bg", "fg" and "retry" mount options for NFS.
  23  */
  24
  25 /*
  26  * nfsmount.c,v 1.1.1.1 1993/11/18 08:40:51 jrs Exp
  27  */
  28
  29 #include <unistd.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <errno.h>
  33 #include <netdb.h>
  34 #include <rpc/rpc.h>
  35 #include <rpc/pmap_prot.h>
  36 #include <rpc/pmap_clnt.h>
  37 #include <sys/socket.h>
  38 #include <sys/time.h>
  39 #include <sys/utsname.h>
  40 #include <sys/stat.h>
  41 #include <arpa/inet.h>
  42
  43 #include "sundries.h"
  44 #include "nfsmount.h"
  45
  46 #include <linux/nfs.h>
  47 #include "mount_constants.h"
  48 #include "nfs_mount3.h"
  49
  50 static char *nfs_strerror(int stat);
  51
  52 #define MAKE_VERSION(p,q,r)     (65536*(p) + 256*(q) + (r))
  53
  54 static int
  55 linux_version_code(void) {
  56         struct utsname my_utsname;
  57         int p, q, r;
  58
  59         if (uname(&my_utsname) == 0) {
  60                 p = atoi(strtok(my_utsname.release, "."));
  61                 q = atoi(strtok(NULL, "."));
  62                 r = atoi(strtok(NULL, "."));
  63                 return MAKE_VERSION(p,q,r);
  64         }
  65         return 0;
  66 }
  67
  68 /*
  69  * nfs_mount_version according to the kernel sources seen at compile time.
  70  */
  71 static int nfs_mount_version = KERNEL_NFS_MOUNT_VERSION;
  72
  73 /*
  74  * Unfortunately, the kernel prints annoying console messages
  75  * in case of an unexpected nfs mount version (instead of
  76  * just returning some error).  Therefore we'll have to try
  77  * and figure out what version the kernel expects.
  78  *
  79  * Variables:
  80  *      KERNEL_NFS_MOUNT_VERSION: kernel sources at compile time
  81  *      NFS_MOUNT_VERSION: these nfsmount sources at compile time
  82  *      nfs_mount_version: version this source and running kernel can handle
  83  */
  84 static void
  85 find_kernel_nfs_mount_version(void) {
  86         int kernel_version = linux_version_code();
  87
  88         if (kernel_version) {
  89              if (kernel_version < MAKE_VERSION(2,1,32))
  90                   nfs_mount_version = 1;
  91              else
  92                   nfs_mount_version = 3;
  93         }
  94         if (nfs_mount_version > NFS_MOUNT_VERSION)
  95              nfs_mount_version = NFS_MOUNT_VERSION;
  96 }
  97
  98 int nfsmount(const char *spec, const char *node, int *flags,
  99              char **extra_opts, char **mount_opts, int running_bg)
 100 {
 101         static char *prev_bg_host;
 102         char hostdir[1024];
 103         CLIENT *mclient;
 104         char *hostname;
 105         char *dirname;
 106         char *old_opts;
 107         char *mounthost=NULL;
 108         char new_opts[1024];
 109         fhandle root_fhandle;
 110         struct timeval total_timeout;
 111         enum clnt_stat clnt_stat;
 112         static struct nfs_mount_data data;
 113         char *opt, *opteq;
 114         int val;
 115         struct hostent *hp;
 116         struct sockaddr_in server_addr;
 117         struct sockaddr_in mount_server_addr;
 118         int msock, fsock;
 119         struct timeval retry_timeout;
 120         struct fhstatus status;
 121         struct stat statbuf;
 122         char *s;
 123         int port;
 124         int mountport;
 125         int bg;
 126         int soft;
 127         int intr;
 128         int posix;
 129         int nocto;
 130         int noac;
 131         int nolock;
 132         int retry;
 133         int tcp;
 134         int mountprog;
 135         int mountvers;
 136         int nfsprog;
 137         int nfsvers;
 138         int retval;
 139         time_t t;
 140         time_t prevt;
 141         time_t timeout;
 142
 143         find_kernel_nfs_mount_version();
 144
 145         retval = EX_FAIL;
 146         msock = fsock = -1;
 147         mclient = NULL;
 148         if (strlen(spec) >= sizeof(hostdir)) {
 149                 fprintf(stderr, "mount: "
 150                         "excessively long host:dir argument\n");
 151                 goto fail;
 152         }
 153         strcpy(hostdir, spec);
 154         if ((s = strchr(hostdir, ':'))) {
 155                 hostname = hostdir;
 156                 dirname = s + 1;
 157                 *s = '\0';
 158                 /* Ignore all but first hostname in replicated mounts
 159                    until they can be fully supported. (mack@sgi.com) */
 160                 if ((s = strchr(hostdir, ','))) {
 161                         *s = '\0';
 162                         fprintf(stderr, "mount: warning: "
 163                                 "multiple hostnames not supported\n");
 164                 }
 165         } else {
 166                 fprintf(stderr, "mount: "
 167                         "directory to mount not in host:dir format\n");
 168                 goto fail;
 169         }
 170
 171         server_addr.sin_family = AF_INET;
 172 #if 1           /* old libc's do not have inet_aton() -- change 1 to 0 */
 173         if (!inet_aton(hostname, &server_addr.sin_addr))
 174 #endif
 175         {
 176                 if ((hp = gethostbyname(hostname)) == NULL) {
 177                         fprintf(stderr, "mount: can't get address for %s\n",
 178                                 hostname);
 179                         goto fail;
 180                 } else {
 181                         if (hp->h_length > sizeof(struct in_addr)) {
 182                                 fprintf(stderr,
 183                                         "mount: got bad hp->h_length\n");
 184                                 hp->h_length = sizeof(struct in_addr);
 185                         }
 186                         memcpy(&server_addr.sin_addr,
 187                                hp->h_addr, hp->h_length);
 188                 }
 189         }
 190
 191         memcpy (&mount_server_addr, &server_addr, sizeof (mount_server_addr));
 192
 193         /* add IP address to mtab options for use when unmounting */
 194
 195         s = inet_ntoa(server_addr.sin_addr);
 196         old_opts = *extra_opts;
 197         if (!old_opts)
 198                 old_opts = "";
 199         if (strlen(old_opts) + strlen(s) + 10 >= sizeof(new_opts)) {
 200                 fprintf(stderr, "mount: "
 201                         "excessively long option argument\n");
 202                 goto fail;
 203         }
 204         sprintf(new_opts, "%s%saddr=%s",
 205                 old_opts, *old_opts ? "," : "", s);
 206         *extra_opts = xstrdup(new_opts);
 207
 208         /* Set default options.
 209          * rsize/wsize (and bsize, for ver >= 3) are left 0 in order to
 210          * let the kernel decide.
 211          * timeo is filled in after we know whether it'll be TCP or UDP. */
 212         memset(&data, 0, sizeof(data));
 213         data.retrans    = 3;
 214         data.acregmin   = 3;
 215         data.acregmax   = 60;
 216         data.acdirmin   = 30;
 217         data.acdirmax   = 60;
 218 #if NFS_MOUNT_VERSION >= 2
 219         data.namlen     = NAME_MAX;
 220 #endif
 221
 222         bg = 0;
 223         soft = 0;
 224         intr = 0;
 225         posix = 0;
 226         nocto = 0;
 227         nolock = 0;
 228         noac = 0;
 229         retry = 10000;          /* 10000 minutes ~ 1 week */
 230         tcp = 0;
 231
 232         mountprog = MOUNTPROG;
 233         mountvers = MOUNTVERS;
 234         port = 0;
 235         mountport = 0;
 236         nfsprog = NFS_PROGRAM;
 237         nfsvers = NFS_VERSION;
 238
 239         /* parse options */
 240
 241         for (opt = strtok(old_opts, ","); opt; opt = strtok(NULL, ",")) {
 242                 if ((opteq = strchr(opt, '='))) {
 243                         val = atoi(opteq + 1);
 244                         *opteq = '\0';
 245                         if (!strcmp(opt, "rsize"))
 246                                 data.rsize = val;
 247                         else if (!strcmp(opt, "wsize"))
 248                                 data.wsize = val;
 249                         else if (!strcmp(opt, "timeo"))
 250                                 data.timeo = val;
 251                         else if (!strcmp(opt, "retrans"))
 252                                 data.retrans = val;
 253                         else if (!strcmp(opt, "acregmin"))
 254                                 data.acregmin = val;
 255                         else if (!strcmp(opt, "acregmax"))
 256                                 data.acregmax = val;
 257                         else if (!strcmp(opt, "acdirmin"))
 258                                 data.acdirmin = val;
 259                         else if (!strcmp(opt, "acdirmax"))
 260                                 data.acdirmax = val;
 261                         else if (!strcmp(opt, "actimeo")) {
 262                                 data.acregmin = val;
 263                                 data.acregmax = val;
 264                                 data.acdirmin = val;
 265                                 data.acdirmax = val;
 266                         }
 267                         else if (!strcmp(opt, "retry"))
 268                                 retry = val;
 269                         else if (!strcmp(opt, "port"))
 270                                 port = val;
 271                         else if (!strcmp(opt, "mountport"))
 272                                 mountport = val;
 273                         else if (!strcmp(opt, "mounthost"))
 274                                 mounthost=xstrndup(opteq+1,
 275                                                   strcspn(opteq+1," \t\n\r,"));
 276                         else if (!strcmp(opt, "mountprog"))
 277                                 mountprog = val;
 278                         else if (!strcmp(opt, "mountvers"))
 279                                 mountvers = val;
 280                         else if (!strcmp(opt, "nfsprog"))
 281                                 nfsprog = val;
 282                         else if (!strcmp(opt, "nfsvers") ||
 283                                  !strcmp(opt, "vers"))
 284                                 nfsvers = val;
 285                         else if (!strcmp(opt, "proto")) {
 286                                 if (!strncmp(opteq+1, "tcp", 3))
 287                                         tcp = 1;
 288                                 else if (!strncmp(opteq+1, "udp", 3))
 289                                         tcp = 0;
 290                                 else
 291                                         printf("Warning: Unrecognized proto= option.\n");
 292                         } else if (!strcmp(opt, "namlen")) {
 293 #if NFS_MOUNT_VERSION >= 2
 294                                 if (nfs_mount_version >= 2)
 295                                         data.namlen = val;
 296                                 else
 297 #endif
 298                                 printf("Warning: Option namlen is not supported.\n");
 299                         } else if (!strcmp(opt, "addr"))
 300                                 /* ignore */;
 301                         else {
 302                                 printf("unknown nfs mount parameter: "
 303                                        "%s=%d\n", opt, val);
 304                                 goto fail;
 305                         }
 306                 }
 307                 else {
 308                         val = 1;
 309                         if (!strncmp(opt, "no", 2)) {
 310                                 val = 0;
 311                                 opt += 2;
 312                         }
 313                         if (!strcmp(opt, "bg"))
 314                                 bg = val;
 315                         else if (!strcmp(opt, "fg"))
 316                                 bg = !val;
 317                         else if (!strcmp(opt, "soft"))
 318                                 soft = val;
 319                         else if (!strcmp(opt, "hard"))
 320                                 soft = !val;
 321                         else if (!strcmp(opt, "intr"))
 322                                 intr = val;
 323                         else if (!strcmp(opt, "posix"))
 324                                 posix = val;
 325                         else if (!strcmp(opt, "cto"))
 326                                 nocto = !val;
 327                         else if (!strcmp(opt, "ac"))
 328                                 noac = !val;
 329                         else if (!strcmp(opt, "tcp"))
 330                                 tcp = val;
 331                         else if (!strcmp(opt, "udp"))
 332                                 tcp = !val;
 333                         else if (!strcmp(opt, "lock")) {
 334                                 if (nfs_mount_version >= 3)
 335                                         nolock = !val;
 336                                 else
 337                                         printf("Warning: option nolock is not supported.\n");
 338                         } else {
 339                                 if (!sloppy) {
 340                                         printf("unknown nfs mount option: "
 341                                                "%s%s\n", val ? "" : "no", opt);
 342                                         goto fail;
 343                                 }
 344                         }
 345                 }
 346         }
 347         data.flags = (soft ? NFS_MOUNT_SOFT : 0)
 348                 | (intr ? NFS_MOUNT_INTR : 0)
 349                 | (posix ? NFS_MOUNT_POSIX : 0)
 350                 | (nocto ? NFS_MOUNT_NOCTO : 0)
 351                 | (noac ? NFS_MOUNT_NOAC : 0);
 352 #if NFS_MOUNT_VERSION >= 2
 353         if (nfs_mount_version >= 2)
 354                 data.flags |= (tcp ? NFS_MOUNT_TCP : 0);
 355 #endif
 356 #if NFS_MOUNT_VERSION >= 3
 357         if (nfs_mount_version >= 3)
 358                 data.flags |= (nolock ? NFS_MOUNT_NONLM : 0);
 359 #endif
 360
 361         /* Adjust options if none specified */
 362         if (!data.timeo)
 363                 data.timeo = tcp ? 70 : 7;
 364
 365 #ifdef NFS_MOUNT_DEBUG
 366         printf("rsize = %d, wsize = %d, timeo = %d, retrans = %d\n",
 367                 data.rsize, data.wsize, data.timeo, data.retrans);
 368         printf("acreg (min, max) = (%d, %d), acdir (min, max) = (%d, %d)\n",
 369                 data.acregmin, data.acregmax, data.acdirmin, data.acdirmax);
 370         printf("port = %d, bg = %d, retry = %d, flags = %.8x\n",
 371                 port, bg, retry, data.flags);
 372         printf("mountprog = %d, mountvers = %d, nfsprog = %d, nfsvers = %d\n",
 373                 mountprog, mountvers, nfsprog, nfsvers);
 374         printf("soft = %d, intr = %d, posix = %d, nocto = %d, noac = %d\n",
 375                 (data.flags & NFS_MOUNT_SOFT) != 0,
 376                 (data.flags & NFS_MOUNT_INTR) != 0,
 377                 (data.flags & NFS_MOUNT_POSIX) != 0,
 378                 (data.flags & NFS_MOUNT_NOCTO) != 0,
 379                 (data.flags & NFS_MOUNT_NOAC) != 0);
 380 #if NFS_MOUNT_VERSION >= 2
 381         printf("tcp = %d\n",
 382                 (data.flags & NFS_MOUNT_TCP) != 0);
 383 #endif
 384 #endif
 385
 386         data.version = nfs_mount_version;
 387         *mount_opts = (char *) &data;
 388
 389         if (*flags & MS_REMOUNT)
 390                 return 0;
 391
 392         /*
 393          * If the previous mount operation on the same host was
 394          * backgrounded, and the "bg" for this mount is also set,
 395          * give up immediately, to avoid the initial timeout.
 396          */
 397         if (bg && !running_bg &&
 398             prev_bg_host && strcmp(hostname, prev_bg_host) == 0) {
 399                 if (retry > 0)
 400                         retval = EX_BG;
 401                 return retval;
 402         }
 403
 404         /* create mount deamon client */
 405         /* See if the nfs host = mount host. */
 406         if (mounthost) {
 407           if (mounthost[0] >= '0' && mounthost[0] <= '9') {
 408             mount_server_addr.sin_family = AF_INET;
 409             mount_server_addr.sin_addr.s_addr = inet_addr(hostname);
 410           } else {
 411                   if ((hp = gethostbyname(mounthost)) == NULL) {
 412                           fprintf(stderr, "mount: can't get address for %s\n",
 413                                   hostname);
 414                           goto fail;
 415                   } else {
 416                           if (hp->h_length > sizeof(struct in_addr)) {
 417                                   fprintf(stderr,
 418                                           "mount: got bad hp->h_length?\n");
 419                                   hp->h_length = sizeof(struct in_addr);
 420                           }
 421                           mount_server_addr.sin_family = AF_INET;
 422                           memcpy(&mount_server_addr.sin_addr,
 423                                  hp->h_addr, hp->h_length);
 424                   }
 425           }
 426         }
 427
 428         /*
 429          * The following loop implements the mount retries. On the first
 430          * call, "running_bg" is 0. When the mount times out, and the
 431          * "bg" option is set, the exit status EX_BG will be returned.
 432          * For a backgrounded mount, there will be a second call by the
 433          * child process with "running_bg" set to 1.
 434          *
 435          * The case where the mount point is not present and the "bg"
 436          * option is set, is treated as a timeout. This is done to
 437          * support nested mounts.
 438          *
 439          * The "retry" count specified by the user is the number of
 440          * minutes to retry before giving up.
 441          *
 442          * Only the first error message will be displayed.
 443          */
 444         retry_timeout.tv_sec = 3;
 445         retry_timeout.tv_usec = 0;
 446         total_timeout.tv_sec = 20;
 447         total_timeout.tv_usec = 0;
 448         timeout = time(NULL) + 60 * retry;
 449         prevt = 0;
 450         t = 30;
 451         val = 1;
 452         for (;;) {
 453                 if (bg && stat(node, &statbuf) == -1) {
 454                         if (running_bg) {
 455                                 sleep(val);     /* 1, 2, 4, 8, 16, 30, ... */
 456                                 val *= 2;
 457                                 if (val > 30)
 458                                         val = 30;
 459                         }
 460                 } else {
 461                         /* be careful not to use too many CPU cycles */
 462                         if (t - prevt < 30)
 463                                 sleep(30);
 464
 465                         /* contact the mount daemon via TCP */
 466                         mount_server_addr.sin_port = htons(mountport);
 467                         msock = RPC_ANYSOCK;
 468                         mclient = clnttcp_create(&mount_server_addr,
 469                                                  mountprog, mountvers,
 470                                                  &msock, 0, 0);
 471
 472                         /* if this fails, contact the mount daemon via UDP */
 473                         if (!mclient) {
 474                                 mount_server_addr.sin_port = htons(mountport);
 475                                 msock = RPC_ANYSOCK;
 476                                 mclient = clntudp_create(&mount_server_addr,
 477                                                          mountprog, mountvers,
 478                                                          retry_timeout, &msock);
 479                         }
 480                         if (mclient) {
 481                                 /* try to mount hostname:dirname */
 482                                 mclient->cl_auth = authunix_create_default();
 483                                 clnt_stat = clnt_call(mclient, MOUNTPROC_MNT,
 484                                         (xdrproc_t) xdr_dirpath, (caddr_t) &dirname,
 485                                         (xdrproc_t) xdr_fhstatus, (caddr_t) &status,
 486                                         total_timeout);
 487                                 if (clnt_stat == RPC_SUCCESS)
 488                                         break;          /* we're done */
 489                                 if (errno != ECONNREFUSED) {
 490                                         clnt_perror(mclient, "mount");
 491                                         goto fail;      /* don't retry */
 492                                 }
 493                                 if (!running_bg && prevt == 0)
 494                                         clnt_perror(mclient, "mount");
 495                                 auth_destroy(mclient->cl_auth);
 496                                 clnt_destroy(mclient);
 497                                 mclient = 0;
 498                                 close(msock);
 499                         } else {
 500                                 if (!running_bg && prevt == 0)
 501                                         clnt_pcreateerror("mount");
 502                         }
 503                         prevt = t;
 504                 }
 505                 if (!bg)
 506                         goto fail;
 507                 if (!running_bg) {
 508                         prev_bg_host = xstrdup(hostname);
 509                         if (retry > 0)
 510                                 retval = EX_BG;
 511                         goto fail;
 512                 }
 513                 t = time(NULL);
 514                 if (t >= timeout)
 515                         goto fail;
 516         }
 517
 518         if (status.fhs_status != 0) {
 519                 fprintf(stderr,
 520                         "mount: %s:%s failed, reason given by server: %s\n",
 521                         hostname, dirname, nfs_strerror(status.fhs_status));
 522                 goto fail;
 523         }
 524         memcpy((char *) &root_fhandle, (char *) status.fhstatus_u.fhs_fhandle,
 525                 sizeof (root_fhandle));
 526
 527         /* create nfs socket for kernel */
 528
 529         if (tcp) {
 530                 if (nfs_mount_version < 3) {
 531                         printf("NFS over TCP is not supported.\n");
 532                         goto fail;
 533                 }
 534                 fsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 535         } else
 536                 fsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 537         if (fsock < 0) {
 538                 perror("nfs socket");
 539                 goto fail;
 540         }
 541         if (bindresvport(fsock, 0) < 0) {
 542                 perror("nfs bindresvport");
 543                 goto fail;
 544         }
 545         if (port == 0) {
 546                 server_addr.sin_port = PMAPPORT;
 547                 port = pmap_getport(&server_addr, nfsprog, nfsvers,
 548                         tcp ? IPPROTO_TCP : IPPROTO_UDP);
 549                 if (port == 0)
 550                         port = NFS_PORT;
 551 #ifdef NFS_MOUNT_DEBUG
 552                 else
 553                         printf("used portmapper to find NFS port\n");
 554 #endif
 555         }
 556 #ifdef NFS_MOUNT_DEBUG
 557         printf("using port %d for nfs deamon\n", port);
 558 #endif
 559         server_addr.sin_port = htons(port);
 560          /*
 561           * connect() the socket for kernels 1.3.10 and below only,
 562           * to avoid problems with multihomed hosts.
 563           * --Swen
 564           */
 565         if (linux_version_code() <= 66314
 566             && connect(fsock, (struct sockaddr *) &server_addr,
 567                        sizeof (server_addr)) < 0) {
 568                 perror("nfs connect");
 569                 goto fail;
 570         }
 571
 572         /* prepare data structure for kernel */
 573
 574         data.fd = fsock;
 575         memcpy((char *) &data.root, (char *) &root_fhandle,
 576                 sizeof (root_fhandle));
 577         memcpy((char *) &data.addr, (char *) &server_addr, sizeof(data.addr));
 578         strncpy(data.hostname, hostname, sizeof(data.hostname));
 579
 580         /* clean up */
 581
 582         auth_destroy(mclient->cl_auth);
 583         clnt_destroy(mclient);
 584         close(msock);
 585         return 0;
 586
 587         /* abort */
 588
 589 fail:
 590         if (msock != -1) {
 591                 if (mclient) {
 592                         auth_destroy(mclient->cl_auth);
 593                         clnt_destroy(mclient);
 594                 }
 595                 close(msock);
 596         }
 597         if (fsock != -1)
 598                 close(fsock);
 599         return retval;
 600 }
 601
 602 /*
 603  * We need to translate between nfs status return values and
 604  * the local errno values which may not be the same.
 605  *
 606  * Andreas Schwab <schwab@LS5.informatik.uni-dortmund.de>: change errno:
 607  * "after #include <errno.h> the symbol errno is reserved for any use,
 608  *  it cannot even be used as a struct tag or field name".
 609  */
 610
 611 #ifndef EDQUOT
 612 #define EDQUOT  ENOSPC
 613 #endif
 614
 615 static struct {
 616         enum nfs_stat stat;
 617         int errnum;
 618 } nfs_errtbl[] = {
 619         { NFS_OK,               0               },
 620         { NFSERR_PERM,          EPERM           },
 621         { NFSERR_NOENT,         ENOENT          },
 622         { NFSERR_IO,            EIO             },
 623         { NFSERR_NXIO,          ENXIO           },
 624         { NFSERR_ACCES,         EACCES          },
 625         { NFSERR_EXIST,         EEXIST          },
 626         { NFSERR_NODEV,         ENODEV          },
 627         { NFSERR_NOTDIR,        ENOTDIR         },
 628         { NFSERR_ISDIR,         EISDIR          },
 629 #ifdef NFSERR_INVAL
 630         { NFSERR_INVAL,         EINVAL          },      /* that Sun forgot */
 631 #endif
 632         { NFSERR_FBIG,          EFBIG           },
 633         { NFSERR_NOSPC,         ENOSPC          },
 634         { NFSERR_ROFS,          EROFS           },
 635         { NFSERR_NAMETOOLONG,   ENAMETOOLONG    },
 636         { NFSERR_NOTEMPTY,      ENOTEMPTY       },
 637         { NFSERR_DQUOT,         EDQUOT          },
 638         { NFSERR_STALE,         ESTALE          },
 639 #ifdef EWFLUSH
 640         { NFSERR_WFLUSH,        EWFLUSH         },
 641 #endif
 642         /* Throw in some NFSv3 values for even more fun (HP returns these) */
 643         { 71,                   EREMOTE         },
 644
 645         { -1,                   EIO             }
 646 };
 647
 648 static char *nfs_strerror(int stat)
 649 {
 650         int i;
 651         static char buf[256];
 652
 653         for (i = 0; nfs_errtbl[i].stat != -1; i++) {
 654                 if (nfs_errtbl[i].stat == stat)
 655                         return strerror(nfs_errtbl[i].errnum);
 656         }
 657         sprintf(buf, "unknown nfs status return value: %d", stat);
 658         return buf;
 659 }
 660
 661 #if 0
 662 int
 663 my_getport(struct in_addr server, struct timeval *timeo, ...)
 664 {
 665         struct sockaddr_in sin;
 666         struct pmap     pmap;
 667         CLIENT          *clnt;
 668         int             sock = RPC_ANYSOCK, port;
 669
 670         pmap.pm_prog = prog;
 671         pmap.pm_vers = vers;
 672         pmap.pm_prot = prot;
 673         pmap.pm_port = 0;
 674         sin.sin_family = AF_INET;
 675         sin.sin_addr = server;
 676         sin.sin_port = htons(111);
 677         clnt = clntudp_create(&sin, 100000, 2, *timeo, &sock);
 678         status = clnt_call(clnt, PMAP_GETPORT,
 679                                 &pmap, (xdrproc_t) xdr_pmap,
 680                                 &port, (xdrproc_t) xdr_uint);
 681         if (status != SUCCESS) {
 682              /* natter */
 683                 port = 0;
 684         }
 685
 686         clnt_destroy(clnt);
 687         close(sock);
 688         return port;
 689 }
 690 #endif