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