lib/libnfs-sync.c

   1 /*
   2    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as published by
   6    the Free Software Foundation; either version 2.1 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17 /*
  18  * High level api to nfs filesystems
  19  */
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #ifdef WIN32
  25 #include "win32_compat.h"
  26 #else
  27 #include <strings.h>
  28 #include <netdb.h>
  29 #include <sys/socket.h>
  30 #include <net/if.h>
  31
  32 #ifdef AROS
  33 #include "aros_compat.h"
  34 #else
  35 #ifdef ANDROID
  36 #include <netinet/in.h>
  37 #include <sys/vfs.h>
  38 #define statvfs statfs
  39 #else
  40 #include <sys/statvfs.h>
  41 #endif /*ANDRIOD*/
  42 #endif /*AROS*/
  43 #endif /*WIN32*/
  44
  45 #ifdef HAVE_SYS_IOCTL_H
  46 #include <sys/ioctl.h>
  47 #endif
  48
  49 #ifdef HAVE_POLL_H
  50 #include <poll.h>
  51 #endif
  52
  53 #ifdef HAVE_UNISTD_H
  54 #include <unistd.h>
  55 #endif
  56
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <string.h>
  60 #include <assert.h>
  61 #include <sys/types.h>
  62 #include <sys/stat.h>
  63 #include <fcntl.h>
  64 #include <errno.h>
  65
  66 #ifdef HAVE_SYS_SOCKIO_H
  67 #include <sys/sockio.h>
  68 #endif
  69
  70 #include "libnfs-zdr.h"
  71 #include "libnfs.h"
  72 #include "libnfs-raw.h"
  73 #include "libnfs-raw-mount.h"
  74 #include "libnfs-raw-nfs.h"
  75 #include "libnfs-private.h"
  76
  77 struct sync_cb_data {
  78        int is_finished;
  79        int status;
  80        uint64_t offset;
  81        void *return_data;
  82        int return_int;
  83 };
  84
  85
  86 static void wait_for_reply(struct rpc_context *rpc, struct sync_cb_data *cb_data)
  87 {
  88         struct pollfd pfd;
  89
  90         assert(rpc->magic == RPC_CONTEXT_MAGIC);
  91
  92         while (!cb_data->is_finished) {
  93
  94                 pfd.fd = rpc_get_fd(rpc);
  95                 pfd.events = rpc_which_events(rpc);
  96                 if (poll(&pfd, 1, -1) < 0) {
  97                         rpc_set_error(rpc, "Poll failed");
  98                         cb_data->status = -EIO;
  99                         break;
 100                 }
 101                 if (rpc_service(rpc, pfd.revents) < 0) {
 102                         rpc_set_error(rpc, "rpc_service failed");
 103                         cb_data->status = -EIO;
 104                         break;
 105                 }
 106                 if (rpc_get_fd(rpc) == -1) {
 107                         rpc_set_error(rpc, "Socket closed\n");
 108                         break;
 109                 }
 110         }
 111 }
 112
 113 static void wait_for_nfs_reply(struct nfs_context *nfs, struct sync_cb_data *cb_data)
 114 {
 115         struct pollfd pfd;
 116
 117         while (!cb_data->is_finished) {
 118
 119                 pfd.fd = nfs_get_fd(nfs);
 120                 pfd.events = nfs_which_events(nfs);
 121                 if (poll(&pfd, 1, -1) < 0) {
 122                         nfs_set_error(nfs, "Poll failed");
 123                         cb_data->status = -EIO;
 124                         break;
 125                 }
 126                 if (nfs_service(nfs, pfd.revents) < 0) {
 127                         nfs_set_error(nfs, "nfs_service failed");
 128                         cb_data->status = -EIO;
 129                         break;
 130                 }
 131         }
 132 }
 133
 134
 135
 136
 137
 138
 139 /*
 140  * connect to the server and mount the export
 141  */
 142 static void mount_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 143 {
 144         struct sync_cb_data *cb_data = private_data;
 145
 146         cb_data->is_finished = 1;
 147         cb_data->status = status;
 148
 149         if (status < 0) {
 150                 nfs_set_error(nfs, "mount/mnt call failed with \"%s\"", (char *)data);
 151                 return;
 152         }
 153 }
 154
 155 int nfs_mount(struct nfs_context *nfs, const char *server, const char *export)
 156 {
 157         struct sync_cb_data cb_data;
 158         struct rpc_context *rpc = nfs_get_rpc_context(nfs);
 159
 160         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 161
 162         cb_data.is_finished = 0;
 163
 164         if (nfs_mount_async(nfs, server, export, mount_cb, &cb_data) != 0) {
 165                 nfs_set_error(nfs, "nfs_mount_async failed");
 166                 return -1;
 167         }
 168
 169         wait_for_nfs_reply(nfs, &cb_data);
 170
 171         /* Dont want any more callbacks even if the socket is closed */
 172         rpc->connect_cb = NULL;
 173
 174         return cb_data.status;
 175 }
 176
 177
 178 /*
 179  * stat()
 180  */
 181 static void stat_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 182 {
 183         struct sync_cb_data *cb_data = private_data;
 184
 185         cb_data->is_finished = 1;
 186         cb_data->status = status;
 187
 188         if (status < 0) {
 189                 nfs_set_error(nfs, "stat call failed with \"%s\"", (char *)data);
 190                 return;
 191         }
 192
 193         memcpy(cb_data->return_data, data, sizeof(struct stat));
 194 }
 195
 196 int nfs_stat(struct nfs_context *nfs, const char *path, struct stat *st)
 197 {
 198         struct sync_cb_data cb_data;
 199
 200         cb_data.is_finished = 0;
 201         cb_data.return_data = st;
 202
 203         if (nfs_stat_async(nfs, path, stat_cb, &cb_data) != 0) {
 204                 nfs_set_error(nfs, "nfs_stat_async failed");
 205                 return -1;
 206         }
 207
 208         wait_for_nfs_reply(nfs, &cb_data);
 209
 210         return cb_data.status;
 211 }
 212
 213
 214
 215
 216 /*
 217  * open()
 218  */
 219 static void open_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 220 {
 221         struct sync_cb_data *cb_data = private_data;
 222         struct nfsfh *fh, **nfsfh;
 223
 224         cb_data->is_finished = 1;
 225         cb_data->status = status;
 226
 227         if (status < 0) {
 228                 nfs_set_error(nfs, "open call failed with \"%s\"", (char *)data);
 229                 return;
 230         }
 231
 232         fh    = data;
 233         nfsfh = cb_data->return_data;
 234         *nfsfh = fh;
 235 }
 236
 237 int nfs_open(struct nfs_context *nfs, const char *path, int mode, struct nfsfh **nfsfh)
 238 {
 239         struct sync_cb_data cb_data;
 240
 241         cb_data.is_finished = 0;
 242         cb_data.return_data = nfsfh;
 243
 244         if (nfs_open_async(nfs, path, mode, open_cb, &cb_data) != 0) {
 245                 nfs_set_error(nfs, "nfs_open_async failed");
 246                 return -1;
 247         }
 248
 249         wait_for_nfs_reply(nfs, &cb_data);
 250
 251         return cb_data.status;
 252 }
 253
 254
 255
 256
 257 /*
 258  * pread()
 259  */
 260 static void pread_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 261 {
 262         struct sync_cb_data *cb_data = private_data;
 263         char *buffer;
 264         cb_data->is_finished = 1;
 265         cb_data->status = status;
 266
 267         if (status < 0) {
 268                 nfs_set_error(nfs, "pread call failed with \"%s\"", (char *)data);
 269                 return;
 270         }
 271
 272         buffer = cb_data->return_data;
 273         memcpy(buffer, (char *)data, status);
 274 }
 275
 276 int nfs_pread(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buffer)
 277 {
 278         struct sync_cb_data cb_data;
 279
 280         cb_data.is_finished = 0;
 281         cb_data.return_data = buffer;
 282
 283         if (nfs_pread_async(nfs, nfsfh, offset, count, pread_cb, &cb_data) != 0) {
 284                 nfs_set_error(nfs, "nfs_pread_async failed");
 285                 return -1;
 286         }
 287
 288         wait_for_nfs_reply(nfs, &cb_data);
 289
 290         return cb_data.status;
 291 }
 292
 293 /*
 294  * read()
 295  */
 296 int nfs_read(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buffer)
 297 {
 298         return nfs_pread(nfs, nfsfh, nfs_get_current_offset(nfsfh), count, buffer);
 299 }
 300
 301 /*
 302  * close()
 303  */
 304 static void close_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 305 {
 306         struct sync_cb_data *cb_data = private_data;
 307         cb_data->is_finished = 1;
 308         cb_data->status = status;
 309
 310         if (status < 0) {
 311                 nfs_set_error(nfs, "close call failed with \"%s\"", (char *)data);
 312                 return;
 313         }
 314 }
 315
 316 int nfs_close(struct nfs_context *nfs, struct nfsfh *nfsfh)
 317 {
 318         struct sync_cb_data cb_data;
 319
 320         cb_data.is_finished = 0;
 321
 322         if (nfs_close_async(nfs, nfsfh, close_cb, &cb_data) != 0) {
 323                 nfs_set_error(nfs, "nfs_close_async failed");
 324                 return -1;
 325         }
 326
 327         wait_for_nfs_reply(nfs, &cb_data);
 328
 329         return cb_data.status;
 330 }
 331
 332
 333
 334
 335 /*
 336  * fstat()
 337  */
 338 int nfs_fstat(struct nfs_context *nfs, struct nfsfh *nfsfh, struct stat *st)
 339 {
 340         struct sync_cb_data cb_data;
 341
 342         cb_data.is_finished = 0;
 343         cb_data.return_data = st;
 344
 345         if (nfs_fstat_async(nfs, nfsfh, stat_cb, &cb_data) != 0) {
 346                 nfs_set_error(nfs, "nfs_fstat_async failed");
 347                 return -1;
 348         }
 349
 350         wait_for_nfs_reply(nfs, &cb_data);
 351
 352         return cb_data.status;
 353 }
 354
 355
 356 /*
 357  * pwrite()
 358  */
 359 static void pwrite_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 360 {
 361         struct sync_cb_data *cb_data = private_data;
 362         cb_data->is_finished = 1;
 363         cb_data->status = status;
 364
 365         if (status < 0) {
 366                 nfs_set_error(nfs, "pwrite call failed with \"%s\"", (char *)data);
 367                 return;
 368         }
 369 }
 370
 371 int nfs_pwrite(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buf)
 372 {
 373         struct sync_cb_data cb_data;
 374
 375         cb_data.is_finished = 0;
 376
 377         if (nfs_pwrite_async(nfs, nfsfh, offset, count, buf, pwrite_cb, &cb_data) != 0) {
 378                 nfs_set_error(nfs, "nfs_pwrite_async failed");
 379                 return -1;
 380         }
 381
 382         wait_for_nfs_reply(nfs, &cb_data);
 383
 384         return cb_data.status;
 385 }
 386
 387 /*
 388  * write()
 389  */
 390 int nfs_write(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buf)
 391 {
 392         return nfs_pwrite(nfs, nfsfh, nfs_get_current_offset(nfsfh), count, buf);
 393 }
 394
 395
 396 /*
 397  * fsync()
 398  */
 399 static void fsync_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 400 {
 401         struct sync_cb_data *cb_data = private_data;
 402         cb_data->is_finished = 1;
 403         cb_data->status = status;
 404
 405         if (status < 0) {
 406                 nfs_set_error(nfs, "fsync call failed with \"%s\"", (char *)data);
 407                 return;
 408         }
 409 }
 410
 411 int nfs_fsync(struct nfs_context *nfs, struct nfsfh *nfsfh)
 412 {
 413         struct sync_cb_data cb_data;
 414
 415         cb_data.is_finished = 0;
 416
 417         if (nfs_fsync_async(nfs, nfsfh, fsync_cb, &cb_data) != 0) {
 418                 nfs_set_error(nfs, "nfs_fsync_async failed");
 419                 return -1;
 420         }
 421
 422         wait_for_nfs_reply(nfs, &cb_data);
 423
 424         return cb_data.status;
 425 }
 426
 427
 428
 429
 430 /*
 431  * ftruncate()
 432  */
 433 static void ftruncate_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 434 {
 435         struct sync_cb_data *cb_data = private_data;
 436         cb_data->is_finished = 1;
 437         cb_data->status = status;
 438
 439         if (status < 0) {
 440                 nfs_set_error(nfs, "ftruncate call failed with \"%s\"", (char *)data);
 441                 return;
 442         }
 443 }
 444
 445 int nfs_ftruncate(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t length)
 446 {
 447         struct sync_cb_data cb_data;
 448
 449         cb_data.is_finished = 0;
 450
 451         if (nfs_ftruncate_async(nfs, nfsfh, length, ftruncate_cb, &cb_data) != 0) {
 452                 nfs_set_error(nfs, "nfs_ftruncate_async failed");
 453                 return -1;
 454         }
 455
 456         wait_for_nfs_reply(nfs, &cb_data);
 457
 458         return cb_data.status;
 459 }
 460
 461
 462
 463 /*
 464  * truncate()
 465  */
 466 static void truncate_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 467 {
 468         struct sync_cb_data *cb_data = private_data;
 469         cb_data->is_finished = 1;
 470         cb_data->status = status;
 471
 472         if (status < 0) {
 473                 nfs_set_error(nfs, "truncate call failed with \"%s\"", (char *)data);
 474                 return;
 475         }
 476 }
 477
 478 int nfs_truncate(struct nfs_context *nfs, const char *path, uint64_t length)
 479 {
 480         struct sync_cb_data cb_data;
 481
 482         cb_data.is_finished = 0;
 483
 484         if (nfs_truncate_async(nfs, path, length, truncate_cb, &cb_data) != 0) {
 485                 nfs_set_error(nfs, "nfs_ftruncate_async failed");
 486                 return -1;
 487         }
 488
 489         wait_for_nfs_reply(nfs, &cb_data);
 490
 491         return cb_data.status;
 492 }
 493
 494
 495
 496
 497
 498 /*
 499  * mkdir()
 500  */
 501 static void mkdir_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 502 {
 503         struct sync_cb_data *cb_data = private_data;
 504         cb_data->is_finished = 1;
 505         cb_data->status = status;
 506
 507         if (status < 0) {
 508                 nfs_set_error(nfs, "mkdir call failed with \"%s\"", (char *)data);
 509                 return;
 510         }
 511 }
 512
 513 int nfs_mkdir(struct nfs_context *nfs, const char *path)
 514 {
 515         struct sync_cb_data cb_data;
 516
 517         cb_data.is_finished = 0;
 518
 519         if (nfs_mkdir_async(nfs, path, mkdir_cb, &cb_data) != 0) {
 520                 nfs_set_error(nfs, "nfs_mkdir_async failed");
 521                 return -1;
 522         }
 523
 524         wait_for_nfs_reply(nfs, &cb_data);
 525
 526         return cb_data.status;
 527 }
 528
 529
 530
 531
 532
 533 /*
 534  * rmdir()
 535  */
 536 static void rmdir_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 537 {
 538         struct sync_cb_data *cb_data = private_data;
 539         cb_data->is_finished = 1;
 540         cb_data->status = status;
 541
 542         if (status < 0) {
 543                 nfs_set_error(nfs, "rmdir call failed with \"%s\"", (char *)data);
 544                 return;
 545         }
 546 }
 547
 548 int nfs_rmdir(struct nfs_context *nfs, const char *path)
 549 {
 550         struct sync_cb_data cb_data;
 551
 552         cb_data.is_finished = 0;
 553
 554         if (nfs_rmdir_async(nfs, path, rmdir_cb, &cb_data) != 0) {
 555                 nfs_set_error(nfs, "nfs_rmdir_async failed");
 556                 return -1;
 557         }
 558
 559         wait_for_nfs_reply(nfs, &cb_data);
 560
 561         return cb_data.status;
 562 }
 563
 564
 565
 566 /*
 567  * creat()
 568  */
 569 static void creat_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 570 {
 571         struct sync_cb_data *cb_data = private_data;
 572         struct nfsfh *fh, **nfsfh;
 573
 574         cb_data->is_finished = 1;
 575         cb_data->status = status;
 576
 577         if (status < 0) {
 578                 nfs_set_error(nfs, "creat call failed with \"%s\"", (char *)data);
 579                 return;
 580         }
 581
 582         fh    = data;
 583         nfsfh = cb_data->return_data;
 584         *nfsfh = fh;
 585 }
 586
 587 int nfs_creat(struct nfs_context *nfs, const char *path, int mode, struct nfsfh **nfsfh)
 588 {
 589         struct sync_cb_data cb_data;
 590
 591         cb_data.is_finished = 0;
 592         cb_data.return_data = nfsfh;
 593
 594         if (nfs_creat_async(nfs, path, mode, creat_cb, &cb_data) != 0) {
 595                 nfs_set_error(nfs, "nfs_creat_async failed");
 596                 return -1;
 597         }
 598
 599         wait_for_nfs_reply(nfs, &cb_data);
 600
 601         return cb_data.status;
 602 }
 603
 604 /*
 605  * mknod()
 606  */
 607 static void mknod_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 608 {
 609         struct sync_cb_data *cb_data = private_data;
 610
 611         cb_data->is_finished = 1;
 612         cb_data->status = status;
 613
 614         if (status < 0) {
 615                 nfs_set_error(nfs, "mknod call failed with \"%s\"", (char *)data);
 616                 return;
 617         }
 618 }
 619
 620 int nfs_mknod(struct nfs_context *nfs, const char *path, int mode, int dev)
 621 {
 622         struct sync_cb_data cb_data;
 623
 624         cb_data.is_finished = 0;
 625
 626         if (nfs_mknod_async(nfs, path, mode, dev, mknod_cb, &cb_data) != 0) {
 627                 nfs_set_error(nfs, "nfs_creat_async failed");
 628                 return -1;
 629         }
 630
 631         wait_for_nfs_reply(nfs, &cb_data);
 632
 633         return cb_data.status;
 634 }
 635
 636
 637 /*
 638  * unlink()
 639  */
 640 static void unlink_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 641 {
 642         struct sync_cb_data *cb_data = private_data;
 643
 644         cb_data->is_finished = 1;
 645         cb_data->status = status;
 646
 647         if (status < 0) {
 648                 nfs_set_error(nfs, "unlink call failed with \"%s\"", (char *)data);
 649                 return;
 650         }
 651 }
 652
 653 int nfs_unlink(struct nfs_context *nfs, const char *path)
 654 {
 655         struct sync_cb_data cb_data;
 656
 657         cb_data.is_finished = 0;
 658
 659         if (nfs_unlink_async(nfs, path, unlink_cb, &cb_data) != 0) {
 660                 nfs_set_error(nfs, "nfs_unlink_async failed");
 661                 return -1;
 662         }
 663
 664         wait_for_nfs_reply(nfs, &cb_data);
 665
 666         return cb_data.status;
 667 }
 668
 669
 670
 671 /*
 672  * opendir()
 673  */
 674 static void opendir_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 675 {
 676         struct sync_cb_data *cb_data = private_data;
 677         struct nfsdir *dir, **nfsdir;
 678
 679         cb_data->is_finished = 1;
 680         cb_data->status = status;
 681
 682         if (status < 0) {
 683                 nfs_set_error(nfs, "opendir call failed with \"%s\"", (char *)data);
 684                 return;
 685         }
 686
 687         dir     = data;
 688         nfsdir  = cb_data->return_data;
 689         *nfsdir = dir;
 690 }
 691
 692 int nfs_opendir(struct nfs_context *nfs, const char *path, struct nfsdir **nfsdir)
 693 {
 694         struct sync_cb_data cb_data;
 695
 696         cb_data.is_finished = 0;
 697         cb_data.return_data = nfsdir;
 698
 699         if (nfs_opendir_async(nfs, path, opendir_cb, &cb_data) != 0) {
 700                 nfs_set_error(nfs, "nfs_opendir_async failed");
 701                 return -1;
 702         }
 703
 704         wait_for_nfs_reply(nfs, &cb_data);
 705
 706         return cb_data.status;
 707 }
 708
 709
 710 /*
 711  * lseek()
 712  */
 713 static void lseek_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 714 {
 715         struct sync_cb_data *cb_data = private_data;
 716
 717         cb_data->is_finished = 1;
 718         cb_data->status = status;
 719
 720         if (status < 0) {
 721                 nfs_set_error(nfs, "lseek call failed with \"%s\"", (char *)data);
 722                 return;
 723         }
 724
 725         if (cb_data->return_data != NULL) {
 726                 memcpy(cb_data->return_data, data, sizeof(uint64_t));
 727         }
 728 }
 729
 730 int nfs_lseek(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, int whence, uint64_t *current_offset)
 731 {
 732         struct sync_cb_data cb_data;
 733
 734         cb_data.is_finished = 0;
 735         cb_data.return_data = current_offset;
 736
 737         if (nfs_lseek_async(nfs, nfsfh, offset, whence, lseek_cb, &cb_data) != 0) {
 738                 nfs_set_error(nfs, "nfs_lseek_async failed");
 739                 return -1;
 740         }
 741
 742         wait_for_nfs_reply(nfs, &cb_data);
 743
 744         return cb_data.status;
 745 }
 746
 747
 748
 749 /*
 750  * statvfs()
 751  */
 752 static void statvfs_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 753 {
 754         struct sync_cb_data *cb_data = private_data;
 755
 756         cb_data->is_finished = 1;
 757         cb_data->status = status;
 758
 759         if (status < 0) {
 760                 nfs_set_error(nfs, "statvfs call failed with \"%s\"", (char *)data);
 761                 return;
 762         }
 763
 764         memcpy(cb_data->return_data, data, sizeof(struct statvfs));
 765 }
 766
 767 int nfs_statvfs(struct nfs_context *nfs, const char *path, struct statvfs *svfs)
 768 {
 769         struct sync_cb_data cb_data;
 770
 771         cb_data.is_finished = 0;
 772         cb_data.return_data = svfs;
 773
 774         if (nfs_statvfs_async(nfs, path, statvfs_cb, &cb_data) != 0) {
 775                 nfs_set_error(nfs, "nfs_statvfs_async failed");
 776                 return -1;
 777         }
 778
 779         wait_for_nfs_reply(nfs, &cb_data);
 780
 781         return cb_data.status;
 782 }
 783
 784
 785
 786
 787
 788 /*
 789  * readlink()
 790  */
 791 static void readlink_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 792 {
 793         struct sync_cb_data *cb_data = private_data;
 794
 795         cb_data->is_finished = 1;
 796         cb_data->status = status;
 797
 798         if (status < 0) {
 799                 nfs_set_error(nfs, "readlink call failed with \"%s\"", (char *)data);
 800                 return;
 801         }
 802
 803         if (strlen(data) > (size_t)cb_data->return_int) {
 804                 nfs_set_error(nfs, "Too small buffer for readlink");
 805                 cb_data->status = -ENAMETOOLONG;
 806                 return;
 807         }
 808
 809         memcpy(cb_data->return_data, data, strlen(data)+1);
 810 }
 811
 812 int nfs_readlink(struct nfs_context *nfs, const char *path, char *buf, int bufsize)
 813 {
 814         struct sync_cb_data cb_data;
 815
 816         cb_data.is_finished = 0;
 817         cb_data.return_data = buf;
 818         cb_data.return_int  = bufsize;
 819
 820         if (nfs_readlink_async(nfs, path, readlink_cb, &cb_data) != 0) {
 821                 nfs_set_error(nfs, "nfs_readlink_async failed");
 822                 return -1;
 823         }
 824
 825         wait_for_nfs_reply(nfs, &cb_data);
 826
 827         return cb_data.status;
 828 }
 829
 830
 831
 832 /*
 833  * chmod()
 834  */
 835 static void chmod_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 836 {
 837         struct sync_cb_data *cb_data = private_data;
 838
 839         cb_data->is_finished = 1;
 840         cb_data->status = status;
 841
 842         if (status < 0) {
 843                 nfs_set_error(nfs, "chmod call failed with \"%s\"", (char *)data);
 844                 return;
 845         }
 846 }
 847
 848 int nfs_chmod(struct nfs_context *nfs, const char *path, int mode)
 849 {
 850         struct sync_cb_data cb_data;
 851
 852         cb_data.is_finished = 0;
 853
 854         if (nfs_chmod_async(nfs, path, mode, chmod_cb, &cb_data) != 0) {
 855                 nfs_set_error(nfs, "nfs_chmod_async failed");
 856                 return -1;
 857         }
 858
 859         wait_for_nfs_reply(nfs, &cb_data);
 860
 861         return cb_data.status;
 862 }
 863
 864
 865
 866
 867 /*
 868  * fchmod()
 869  */
 870 static void fchmod_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 871 {
 872         struct sync_cb_data *cb_data = private_data;
 873
 874         cb_data->is_finished = 1;
 875         cb_data->status = status;
 876
 877         if (status < 0) {
 878                 nfs_set_error(nfs, "fchmod call failed with \"%s\"", (char *)data);
 879                 return;
 880         }
 881 }
 882
 883 int nfs_fchmod(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode)
 884 {
 885         struct sync_cb_data cb_data;
 886
 887         cb_data.is_finished = 0;
 888
 889         if (nfs_fchmod_async(nfs, nfsfh, mode, fchmod_cb, &cb_data) != 0) {
 890                 nfs_set_error(nfs, "nfs_fchmod_async failed");
 891                 return -1;
 892         }
 893
 894         wait_for_nfs_reply(nfs, &cb_data);
 895
 896         return cb_data.status;
 897 }
 898
 899
 900
 901
 902 /*
 903  * chown()
 904  */
 905 static void chown_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 906 {
 907         struct sync_cb_data *cb_data = private_data;
 908
 909         cb_data->is_finished = 1;
 910         cb_data->status = status;
 911
 912         if (status < 0) {
 913                 nfs_set_error(nfs, "chown call failed with \"%s\"", (char *)data);
 914                 return;
 915         }
 916 }
 917
 918 int nfs_chown(struct nfs_context *nfs, const char *path, int uid, int gid)
 919 {
 920         struct sync_cb_data cb_data;
 921
 922         cb_data.is_finished = 0;
 923
 924         if (nfs_chown_async(nfs, path, uid, gid, chown_cb, &cb_data) != 0) {
 925                 nfs_set_error(nfs, "nfs_chown_async failed");
 926                 return -1;
 927         }
 928
 929         wait_for_nfs_reply(nfs, &cb_data);
 930
 931         return cb_data.status;
 932 }
 933
 934 /*
 935  * fchown()
 936  */
 937 static void fchown_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 938 {
 939         struct sync_cb_data *cb_data = private_data;
 940
 941         cb_data->is_finished = 1;
 942         cb_data->status = status;
 943
 944         if (status < 0) {
 945                 nfs_set_error(nfs, "fchown call failed with \"%s\"", (char *)data);
 946                 return;
 947         }
 948 }
 949
 950 int nfs_fchown(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid)
 951 {
 952         struct sync_cb_data cb_data;
 953
 954         cb_data.is_finished = 0;
 955
 956         if (nfs_fchown_async(nfs, nfsfh, uid, gid, fchown_cb, &cb_data) != 0) {
 957                 nfs_set_error(nfs, "nfs_fchown_async failed");
 958                 return -1;
 959         }
 960
 961         wait_for_nfs_reply(nfs, &cb_data);
 962
 963         return cb_data.status;
 964 }
 965
 966
 967
 968 /*
 969  * utimes()
 970  */
 971 static void utimes_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 972 {
 973         struct sync_cb_data *cb_data = private_data;
 974
 975         cb_data->is_finished = 1;
 976         cb_data->status = status;
 977
 978         if (status < 0) {
 979                 nfs_set_error(nfs, "utimes call failed with \"%s\"", (char *)data);
 980                 return;
 981         }
 982 }
 983
 984 int nfs_utimes(struct nfs_context *nfs, const char *path, struct timeval *times)
 985 {
 986         struct sync_cb_data cb_data;
 987
 988         cb_data.is_finished = 0;
 989
 990         if (nfs_utimes_async(nfs, path, times, utimes_cb, &cb_data) != 0) {
 991                 nfs_set_error(nfs, "nfs_utimes_async failed");
 992                 return -1;
 993         }
 994
 995         wait_for_nfs_reply(nfs, &cb_data);
 996
 997         return cb_data.status;
 998 }
 999
1000
1001
1002 /*
1003  * utime()
1004  */
1005 static void utime_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
1006 {
1007         struct sync_cb_data *cb_data = private_data;
1008
1009         cb_data->is_finished = 1;
1010         cb_data->status = status;
1011
1012         if (status < 0) {
1013                 nfs_set_error(nfs, "utime call failed with \"%s\"", (char *)data);
1014                 return;
1015         }
1016 }
1017
1018 int nfs_utime(struct nfs_context *nfs, const char *path, struct utimbuf *times)
1019 {
1020         struct sync_cb_data cb_data;
1021
1022         cb_data.is_finished = 0;
1023
1024         if (nfs_utime_async(nfs, path, times, utime_cb, &cb_data) != 0) {
1025                 nfs_set_error(nfs, "nfs_utimes_async failed");
1026                 return -1;
1027         }
1028
1029         wait_for_nfs_reply(nfs, &cb_data);
1030
1031         return cb_data.status;
1032 }
1033
1034
1035
1036
1037 /*
1038  * access()
1039  */
1040 static void access_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
1041 {
1042         struct sync_cb_data *cb_data = private_data;
1043
1044         cb_data->is_finished = 1;
1045         cb_data->status = status;
1046
1047         if (status < 0) {
1048                 nfs_set_error(nfs, "access call failed with \"%s\"", (char *)data);
1049                 return;
1050         }
1051 }
1052
1053 int nfs_access(struct nfs_context *nfs, const char *path, int mode)
1054 {
1055         struct sync_cb_data cb_data;
1056
1057         cb_data.is_finished = 0;
1058
1059         if (nfs_access_async(nfs, path, mode, access_cb, &cb_data) != 0) {
1060                 nfs_set_error(nfs, "nfs_access_async failed");
1061                 return -1;
1062         }
1063
1064         wait_for_nfs_reply(nfs, &cb_data);
1065
1066         return cb_data.status;
1067 }
1068
1069
1070
1071 /*
1072  * symlink()
1073  */
1074 static void symlink_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
1075 {
1076         struct sync_cb_data *cb_data = private_data;
1077
1078         cb_data->is_finished = 1;
1079         cb_data->status = status;
1080
1081         if (status < 0) {
1082                 nfs_set_error(nfs, "symlink call failed with \"%s\"", (char *)data);
1083                 return;
1084         }
1085 }
1086
1087 int nfs_symlink(struct nfs_context *nfs, const char *oldpath, const char *newpath)
1088 {
1089         struct sync_cb_data cb_data;
1090
1091         cb_data.is_finished = 0;
1092
1093         if (nfs_symlink_async(nfs, oldpath, newpath, symlink_cb, &cb_data) != 0) {
1094                 nfs_set_error(nfs, "nfs_symlink_async failed");
1095                 return -1;
1096         }
1097
1098         wait_for_nfs_reply(nfs, &cb_data);
1099
1100         return cb_data.status;
1101 }
1102
1103
1104
1105 /*
1106  * rename()
1107  */
1108 static void rename_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
1109 {
1110         struct sync_cb_data *cb_data = private_data;
1111
1112         cb_data->is_finished = 1;
1113         cb_data->status = status;
1114
1115         if (status < 0) {
1116                 nfs_set_error(nfs, "rename call failed with \"%s\"", (char *)data);
1117                 return;
1118         }
1119 }
1120
1121 int nfs_rename(struct nfs_context *nfs, const char *oldpath, const char *newpath)
1122 {
1123         struct sync_cb_data cb_data;
1124
1125         cb_data.is_finished = 0;
1126
1127         if (nfs_rename_async(nfs, oldpath, newpath, rename_cb, &cb_data) != 0) {
1128                 nfs_set_error(nfs, "nfs_rename_async failed");
1129                 return -1;
1130         }
1131
1132         wait_for_nfs_reply(nfs, &cb_data);
1133
1134         return cb_data.status;
1135 }
1136
1137
1138
1139 /*
1140  * link()
1141  */
1142 static void link_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
1143 {
1144         struct sync_cb_data *cb_data = private_data;
1145
1146         cb_data->is_finished = 1;
1147         cb_data->status = status;
1148
1149         if (status < 0) {
1150                 nfs_set_error(nfs, "link call failed with \"%s\"", (char *)data);
1151                 return;
1152         }
1153 }
1154
1155 int nfs_link(struct nfs_context *nfs, const char *oldpath, const char *newpath)
1156 {
1157         struct sync_cb_data cb_data;
1158
1159         cb_data.is_finished = 0;
1160
1161         if (nfs_link_async(nfs, oldpath, newpath, link_cb, &cb_data) != 0) {
1162                 nfs_set_error(nfs, "nfs_link_async failed");
1163                 return -1;
1164         }
1165
1166         wait_for_nfs_reply(nfs, &cb_data);
1167
1168         return cb_data.status;
1169 }
1170
1171 void mount_getexports_cb(struct rpc_context *mount_context, int status, void *data, void *private_data)
1172 {
1173         struct sync_cb_data *cb_data = private_data;
1174         exports export;
1175
1176         assert(mount_context->magic == RPC_CONTEXT_MAGIC);
1177
1178         cb_data->is_finished = 1;
1179         cb_data->status = status;
1180         cb_data->return_data = NULL;
1181
1182         if (status != 0) {
1183                 rpc_set_error(mount_context, "mount/export call failed with \"%s\"", (char *)data);
1184                 return;
1185         }
1186
1187         export = *(exports *)data;
1188         while (export != NULL) {
1189                 exports new_export;
1190
1191                 new_export = malloc(sizeof(*new_export));
1192                 memset(new_export, 0, sizeof(*new_export));
1193                 new_export->ex_dir  = strdup(export->ex_dir);
1194                 new_export->ex_next = cb_data->return_data;
1195
1196                 cb_data->return_data = new_export;
1197
1198                 export = export->ex_next;
1199         }
1200 }
1201
1202 struct exportnode *mount_getexports(const char *server)
1203 {
1204         struct sync_cb_data cb_data;
1205         struct rpc_context *rpc;
1206
1207
1208         cb_data.is_finished = 0;
1209         cb_data.return_data = NULL;
1210
1211         rpc = rpc_init_context();
1212         if (mount_getexports_async(rpc, server, mount_getexports_cb, &cb_data) != 0) {
1213                 rpc_destroy_context(rpc);
1214                 return NULL;
1215         }
1216
1217         wait_for_reply(rpc, &cb_data);
1218         rpc_destroy_context(rpc);
1219
1220         return cb_data.return_data;
1221 }
1222
1223 void mount_free_export_list(struct exportnode *exports)
1224 {
1225         struct exportnode *tmp;
1226
1227         while ((tmp = exports)) {
1228                 exports = exports->ex_next;
1229                 free(tmp->ex_dir);
1230                 free(tmp);
1231         }
1232 }
1233
1234
1235
1236 void free_nfs_srvr_list(struct nfs_server_list *srv)
1237 {
1238         while (srv != NULL) {
1239                 struct nfs_server_list *next = srv->next;
1240
1241                 free(srv->addr);
1242                 free(srv);
1243                 srv = next;
1244         }
1245 }
1246
1247 struct nfs_list_data {
1248        int status;
1249        struct nfs_server_list *srvrs;
1250 };
1251
1252 void callit_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data)
1253 {
1254         struct nfs_list_data *srv_data = private_data;
1255         struct sockaddr *sin;
1256         char hostdd[16];
1257         struct nfs_server_list *srvr;
1258
1259         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1260
1261         if (status == RPC_STATUS_CANCEL) {
1262                 return;
1263         }
1264         if (status != 0) {
1265                 srv_data->status = -1;
1266                 return;
1267         }
1268
1269         sin = rpc_get_recv_sockaddr(rpc);
1270         if (sin == NULL) {
1271                 rpc_set_error(rpc, "failed to get sockaddr in CALLIT callback");
1272                 srv_data->status = -1;
1273                 return;
1274         }
1275
1276         if (getnameinfo(sin, sizeof(struct sockaddr_in), &hostdd[0], sizeof(hostdd), NULL, 0, NI_NUMERICHOST) < 0) {
1277                 rpc_set_error(rpc, "getnameinfo failed in CALLIT callback");
1278                 srv_data->status = -1;
1279                 return;
1280         }
1281
1282         /* check for dupes */
1283         for (srvr = srv_data->srvrs; srvr; srvr = srvr->next) {
1284                 if (!strcmp(hostdd, srvr->addr)) {
1285                         return;
1286                 }
1287         }
1288
1289         srvr = malloc(sizeof(struct nfs_server_list));
1290         if (srvr == NULL) {
1291                 rpc_set_error(rpc, "Malloc failed when allocating server structure");
1292                 srv_data->status = -1;
1293                 return;
1294         }
1295
1296         srvr->addr = strdup(hostdd);
1297         if (srvr->addr == NULL) {
1298                 rpc_set_error(rpc, "Strdup failed when allocating server structure");
1299                 free(srvr);
1300                 srv_data->status = -1;
1301                 return;
1302         }
1303
1304         srvr->next = srv_data->srvrs;
1305         srv_data->srvrs = srvr;
1306 }
1307
1308 #ifdef WIN32
1309
1310 static int send_nfsd_probes(struct rpc_context *rpc, INTERFACE_INFO *InterfaceList, int numIfs, struct nfs_list_data *data)
1311 {
1312   int i=0;
1313
1314   assert(rpc->magic == RPC_CONTEXT_MAGIC);
1315
1316   for(i = 0; i < numIfs; i++)
1317   {
1318     SOCKADDR *pAddress;
1319     char bcdd[16];
1320     unsigned long nFlags = 0;
1321
1322     pAddress = (SOCKADDR *) & (InterfaceList[i].iiBroadcastAddress);
1323
1324     if(pAddress->sa_family != AF_INET)
1325       continue;
1326
1327     nFlags = InterfaceList[i].iiFlags;
1328
1329     if (!(nFlags & IFF_UP))
1330     {
1331       continue;
1332     }
1333
1334     if (nFlags & IFF_LOOPBACK)
1335     {
1336       continue;
1337     }
1338
1339     if (!(nFlags & IFF_BROADCAST))
1340     {
1341       continue;
1342     }
1343
1344     if (getnameinfo(pAddress, sizeof(struct sockaddr_in), &bcdd[0], sizeof(bcdd), NULL, 0, NI_NUMERICHOST) < 0)
1345     {
1346       continue;
1347     }
1348
1349     if (rpc_set_udp_destination(rpc, bcdd, 111, 1) < 0)
1350     {
1351       return -1;
1352     }
1353
1354     if (rpc_pmap_callit_async(rpc, MOUNT_PROGRAM, 2, 0, NULL, 0, callit_cb, data) < 0)
1355     {
1356       return -1;
1357     }
1358   }
1359   return 0;
1360 }
1361
1362 struct nfs_server_list *nfs_find_local_servers(void)
1363 {
1364   struct rpc_context *rpc;
1365   struct nfs_list_data data = {0, NULL};
1366   struct timeval tv_start, tv_current;
1367   int loop;
1368   struct pollfd pfd;
1369   INTERFACE_INFO InterfaceList[20];
1370   unsigned long nBytesReturned;
1371   int nNumInterfaces = 0;
1372
1373   rpc = rpc_init_udp_context();
1374   if (rpc == NULL)
1375   {
1376     return NULL;
1377   }
1378
1379   if (rpc_bind_udp(rpc, "0.0.0.0", 0) < 0)
1380   {
1381     rpc_destroy_context(rpc);
1382     return NULL;
1383   }
1384
1385   if (WSAIoctl(rpc_get_fd(rpc), SIO_GET_INTERFACE_LIST, 0, 0, &InterfaceList, sizeof(InterfaceList), &nBytesReturned, 0, 0) == SOCKET_ERROR)
1386   {
1387     return NULL;
1388   }
1389
1390   nNumInterfaces = nBytesReturned / sizeof(INTERFACE_INFO);
1391
1392   for (loop=0; loop<3; loop++)
1393   {
1394     if (send_nfsd_probes(rpc, InterfaceList, nNumInterfaces, &data) != 0)
1395     {
1396       rpc_destroy_context(rpc);
1397       return NULL;
1398     }
1399
1400     win32_gettimeofday(&tv_start, NULL);
1401     for(;;)
1402     {
1403       int mpt;
1404
1405       pfd.fd = rpc_get_fd(rpc);
1406       pfd.events = rpc_which_events(rpc);
1407
1408       win32_gettimeofday(&tv_current, NULL);
1409       mpt = 1000
1410       -    (tv_current.tv_sec *1000 + tv_current.tv_usec / 1000)
1411       +    (tv_start.tv_sec *1000 + tv_start.tv_usec / 1000);
1412
1413       if (poll(&pfd, 1, mpt) < 0)
1414       {
1415         free_nfs_srvr_list(data.srvrs);
1416         rpc_destroy_context(rpc);
1417         return NULL;
1418       }
1419       if (pfd.revents == 0)
1420       {
1421         break;
1422       }
1423
1424       if (rpc_service(rpc, pfd.revents) < 0)
1425       {
1426         break;
1427       }
1428     }
1429   }
1430
1431   rpc_destroy_context(rpc);
1432
1433   if (data.status != 0)
1434   {
1435     free_nfs_srvr_list(data.srvrs);
1436     return NULL;
1437   }
1438   return data.srvrs;
1439 }
1440 #else
1441
1442 static int send_nfsd_probes(struct rpc_context *rpc, struct ifconf *ifc, struct nfs_list_data *data)
1443 {
1444         char *ptr;
1445
1446         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1447
1448         for (ptr =(char *)(ifc->ifc_buf); ptr < (char *)(ifc->ifc_buf) + ifc->ifc_len; ) {
1449                 struct ifreq *ifr;
1450                 char bcdd[16];
1451
1452                 ifr = (struct ifreq *)ptr;
1453 #ifdef HAVE_SOCKADDR_LEN
1454                 if (ifr->ifr_addr.sa_len > sizeof(struct sockaddr)) {
1455                         ptr += sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
1456                 } else {
1457                         ptr += sizeof(ifr->ifr_name) + sizeof(struct sockaddr);
1458                 }
1459 #else
1460                 ptr += sizeof(struct ifreq);
1461 #endif
1462
1463                 if (ifr->ifr_addr.sa_family != AF_INET) {
1464                         continue;
1465                 }
1466                 if (ioctl(rpc_get_fd(rpc), SIOCGIFFLAGS, ifr) < 0) {
1467                         return -1;
1468                 }
1469                 if (!(ifr->ifr_flags & IFF_UP)) {
1470                         continue;
1471                 }
1472                 if (ifr->ifr_flags & IFF_LOOPBACK) {
1473                         continue;
1474                 }
1475                 if (!(ifr->ifr_flags & IFF_BROADCAST)) {
1476                         continue;
1477                 }
1478                 if (ioctl(rpc_get_fd(rpc), SIOCGIFBRDADDR, ifr) < 0) {
1479                         continue;
1480                 }
1481                 if (getnameinfo(&ifr->ifr_broadaddr, sizeof(struct sockaddr_in), &bcdd[0], sizeof(bcdd), NULL, 0, NI_NUMERICHOST) < 0) {
1482                         continue;
1483                 }
1484                 if (rpc_set_udp_destination(rpc, bcdd, 111, 1) < 0) {
1485                         return -1;
1486                 }
1487
1488                 if (rpc_pmap_callit_async(rpc, MOUNT_PROGRAM, 2, 0, NULL, 0, callit_cb, data) < 0) {
1489                         return -1;
1490                 }
1491         }
1492
1493         return 0;
1494 }
1495
1496 struct nfs_server_list *nfs_find_local_servers(void)
1497 {
1498         struct rpc_context *rpc;
1499         struct nfs_list_data data = {0, NULL};
1500         struct timeval tv_start, tv_current;
1501         struct ifconf ifc;
1502         int size, loop;
1503         struct pollfd pfd;
1504
1505         rpc = rpc_init_udp_context();
1506         if (rpc == NULL) {
1507                 return NULL;
1508         }
1509
1510         if (rpc_bind_udp(rpc, "0.0.0.0", 0) < 0) {
1511                 rpc_destroy_context(rpc);
1512                 return NULL;
1513         }
1514
1515
1516         /* get list of all interfaces */
1517         size = sizeof(struct ifreq);
1518         ifc.ifc_buf = NULL;
1519         ifc.ifc_len = size;
1520
1521         while(ifc.ifc_len > (size - sizeof(struct ifreq))) {
1522                 size *= 2;
1523
1524                 free(ifc.ifc_buf);
1525                 ifc.ifc_len = size;
1526                 ifc.ifc_buf = malloc(size);
1527                 memset(ifc.ifc_buf, 0, size);
1528                 if (ioctl(rpc_get_fd(rpc), SIOCGIFCONF, (caddr_t)&ifc) < 0) {
1529                         rpc_destroy_context(rpc);
1530                         free(ifc.ifc_buf);
1531                         return NULL;
1532                 }
1533         }
1534
1535         for (loop=0; loop<3; loop++) {
1536                 if (send_nfsd_probes(rpc, &ifc, &data) != 0) {
1537                         rpc_destroy_context(rpc);
1538                         free(ifc.ifc_buf);
1539                         return NULL;
1540                 }
1541
1542                 gettimeofday(&tv_start, NULL);
1543                 for(;;) {
1544                         int mpt;
1545
1546                         pfd.fd = rpc_get_fd(rpc);
1547                         pfd.events = rpc_which_events(rpc);
1548
1549                         gettimeofday(&tv_current, NULL);
1550                         mpt = 1000
1551                         -    (tv_current.tv_sec *1000 + tv_current.tv_usec / 1000)
1552                         +    (tv_start.tv_sec *1000 + tv_start.tv_usec / 1000);
1553
1554                         if (poll(&pfd, 1, mpt) < 0) {
1555                                 free_nfs_srvr_list(data.srvrs);
1556                                 rpc_destroy_context(rpc);
1557                                 return NULL;
1558                         }
1559                         if (pfd.revents == 0) {
1560                                 break;
1561                         }
1562
1563                         if (rpc_service(rpc, pfd.revents) < 0) {
1564                                 break;
1565                         }
1566                 }
1567         }
1568
1569         free(ifc.ifc_buf);
1570         rpc_destroy_context(rpc);
1571
1572         if (data.status != 0) {
1573                 free_nfs_srvr_list(data.srvrs);
1574                 return NULL;
1575         }
1576         return data.srvrs;
1577 }
1578 #endif//WIN32