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;
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         export = *(exports *)data;
1161         while (export != NULL) {
1162                 exports new_export;
1163
1164                 new_export = malloc(sizeof(*new_export));
1165                 memset(new_export, 0, sizeof(*new_export));
1166                 new_export->ex_dir  = strdup(export->ex_dir);
1167                 new_export->ex_next = cb_data->return_data;
1168
1169                 cb_data->return_data = new_export;
1170
1171                 export = export->ex_next;
1172         }
1173 }
1174
1175 struct exportnode *mount_getexports(const char *server)
1176 {
1177         struct sync_cb_data cb_data;
1178         struct rpc_context *rpc;
1179
1180
1181         cb_data.is_finished = 0;
1182         cb_data.return_data = NULL;
1183
1184         rpc = rpc_init_context();
1185         if (mount_getexports_async(rpc, server, mount_getexports_cb, &cb_data) != 0) {
1186                 rpc_destroy_context(rpc);
1187                 return NULL;
1188         }
1189
1190         wait_for_reply(rpc, &cb_data);
1191         rpc_destroy_context(rpc);
1192
1193         return cb_data.return_data;
1194 }
1195
1196 void mount_free_export_list(struct exportnode *exports)
1197 {
1198         struct exportnode *tmp;
1199
1200         while ((tmp = exports)) {
1201                 exports = exports->ex_next;
1202                 free(tmp->ex_dir);
1203                 free(tmp);
1204         }
1205 }
1206
1207
1208
1209 void free_nfs_srvr_list(struct nfs_server_list *srv)
1210 {
1211         while (srv != NULL) {
1212                 struct nfs_server_list *next = srv->next;
1213
1214                 free(srv->addr);
1215                 free(srv);
1216                 srv = next;
1217         }
1218 }
1219
1220 struct nfs_list_data {
1221        int status;
1222        struct nfs_server_list *srvrs;
1223 };
1224
1225 void callit_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data)
1226 {
1227         struct nfs_list_data *srv_data = private_data;
1228         struct sockaddr *sin;
1229         char hostdd[16];
1230         struct nfs_server_list *srvr;
1231
1232         if (status == RPC_STATUS_CANCEL) {
1233                 return;
1234         }
1235         if (status != 0) {
1236                 srv_data->status = -1;
1237                 return;
1238         }
1239
1240         sin = rpc_get_recv_sockaddr(rpc);
1241         if (sin == NULL) {
1242                 rpc_set_error(rpc, "failed to get sockaddr in CALLIT callback");
1243                 srv_data->status = -1;
1244                 return;
1245         }
1246
1247         if (getnameinfo(sin, sizeof(struct sockaddr_in), &hostdd[0], sizeof(hostdd), NULL, 0, NI_NUMERICHOST) < 0) {
1248                 rpc_set_error(rpc, "getnameinfo failed in CALLIT callback");
1249                 srv_data->status = -1;
1250                 return;
1251         }
1252
1253         /* check for dupes */
1254         for (srvr = srv_data->srvrs; srvr; srvr = srvr->next) {
1255                 if (!strcmp(hostdd, srvr->addr)) {
1256                         return;
1257                 }
1258         }
1259
1260         srvr = malloc(sizeof(struct nfs_server_list));
1261         if (srvr == NULL) {
1262                 rpc_set_error(rpc, "Malloc failed when allocating server structure");
1263                 srv_data->status = -1;
1264                 return;
1265         }
1266
1267         srvr->addr = strdup(hostdd);
1268         if (srvr->addr == NULL) {
1269                 rpc_set_error(rpc, "Strdup failed when allocating server structure");
1270                 free(srvr);
1271                 srv_data->status = -1;
1272                 return;
1273         }
1274
1275         srvr->next = srv_data->srvrs;
1276         srv_data->srvrs = srvr;
1277 }
1278
1279 #ifdef WIN32
1280
1281 static int send_nfsd_probes(struct rpc_context *rpc, INTERFACE_INFO *InterfaceList, int numIfs, struct nfs_list_data *data)
1282 {
1283   int i=0;
1284
1285   for(i = 0; i < numIfs; i++)
1286   {
1287     SOCKADDR *pAddress;
1288     char bcdd[16];
1289     unsigned long nFlags = 0;
1290
1291     pAddress = (SOCKADDR *) & (InterfaceList[i].iiBroadcastAddress);
1292
1293     if(pAddress->sa_family != AF_INET)
1294       continue;
1295
1296     nFlags = InterfaceList[i].iiFlags;
1297
1298     if (!(nFlags & IFF_UP))
1299     {
1300       continue;
1301     }
1302
1303     if (nFlags & IFF_LOOPBACK)
1304     {
1305       continue;
1306     }
1307
1308     if (!(nFlags & IFF_BROADCAST))
1309     {
1310       continue;
1311     }
1312
1313     if (getnameinfo(pAddress, sizeof(struct sockaddr_in), &bcdd[0], sizeof(bcdd), NULL, 0, NI_NUMERICHOST) < 0)
1314     {
1315       continue;
1316     }
1317
1318     if (rpc_set_udp_destination(rpc, bcdd, 111, 1) < 0)
1319     {
1320       return -1;
1321     }
1322
1323     if (rpc_pmap_callit_async(rpc, MOUNT_PROGRAM, 2, 0, NULL, 0, callit_cb, data) < 0)
1324     {
1325       return -1;
1326     }
1327   }
1328   return 0;
1329 }
1330
1331 struct nfs_server_list *nfs_find_local_servers(void)
1332 {
1333   struct rpc_context *rpc;
1334   struct nfs_list_data data = {0, NULL};
1335   struct timeval tv_start, tv_current;
1336   int loop;
1337   struct pollfd pfd;
1338   INTERFACE_INFO InterfaceList[20];
1339   unsigned long nBytesReturned;
1340   int nNumInterfaces = 0;
1341
1342   rpc = rpc_init_udp_context();
1343   if (rpc == NULL)
1344   {
1345     return NULL;
1346   }
1347
1348   if (rpc_bind_udp(rpc, "0.0.0.0", 0) < 0)
1349   {
1350     rpc_destroy_context(rpc);
1351     return NULL;
1352   }
1353
1354   if (WSAIoctl(rpc_get_fd(rpc), SIO_GET_INTERFACE_LIST, 0, 0, &InterfaceList, sizeof(InterfaceList), &nBytesReturned, 0, 0) == SOCKET_ERROR)
1355   {
1356     return NULL;
1357   }
1358
1359   nNumInterfaces = nBytesReturned / sizeof(INTERFACE_INFO);
1360
1361   for (loop=0; loop<3; loop++)
1362   {
1363     if (send_nfsd_probes(rpc, InterfaceList, nNumInterfaces, &data) != 0)
1364     {
1365       rpc_destroy_context(rpc);
1366       return NULL;
1367     }
1368
1369     win32_gettimeofday(&tv_start, NULL);
1370     for(;;)
1371     {
1372       int mpt;
1373
1374       pfd.fd = rpc_get_fd(rpc);
1375       pfd.events = rpc_which_events(rpc);
1376
1377       win32_gettimeofday(&tv_current, NULL);
1378       mpt = 1000
1379       -    (tv_current.tv_sec *1000 + tv_current.tv_usec / 1000)
1380       +    (tv_start.tv_sec *1000 + tv_start.tv_usec / 1000);
1381
1382       if (poll(&pfd, 1, mpt) < 0)
1383       {
1384         free_nfs_srvr_list(data.srvrs);
1385         rpc_destroy_context(rpc);
1386         return NULL;
1387       }
1388       if (pfd.revents == 0)
1389       {
1390         break;
1391       }
1392
1393       if (rpc_service(rpc, pfd.revents) < 0)
1394       {
1395         break;
1396       }
1397     }
1398   }
1399
1400   rpc_destroy_context(rpc);
1401
1402   if (data.status != 0)
1403   {
1404     free_nfs_srvr_list(data.srvrs);
1405     return NULL;
1406   }
1407   return data.srvrs;
1408 }
1409 #else
1410
1411 static int send_nfsd_probes(struct rpc_context *rpc, struct ifconf *ifc, struct nfs_list_data *data)
1412 {
1413         char *ptr;
1414
1415         for (ptr =(char *)(ifc->ifc_buf); ptr < (char *)(ifc->ifc_buf) + ifc->ifc_len; ) {
1416                 struct ifreq *ifr;
1417                 char bcdd[16];
1418
1419                 ifr = (struct ifreq *)ptr;
1420 #ifdef HAVE_SOCKADDR_LEN
1421                 if (ifr->ifr_addr.sa_len > sizeof(struct sockaddr)) {
1422                         ptr += sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
1423                 } else {
1424                         ptr += sizeof(ifr->ifr_name) + sizeof(struct sockaddr);
1425                 }
1426 #else
1427                 ptr += sizeof(struct ifreq);
1428 #endif
1429
1430                 if (ifr->ifr_addr.sa_family != AF_INET) {
1431                         continue;
1432                 }
1433                 if (ioctl(rpc_get_fd(rpc), SIOCGIFFLAGS, ifr) < 0) {
1434                         return -1;
1435                 }
1436                 if (!(ifr->ifr_flags & IFF_UP)) {
1437                         continue;
1438                 }
1439                 if (ifr->ifr_flags & IFF_LOOPBACK) {
1440                         continue;
1441                 }
1442                 if (!(ifr->ifr_flags & IFF_BROADCAST)) {
1443                         continue;
1444                 }
1445                 if (ioctl(rpc_get_fd(rpc), SIOCGIFBRDADDR, ifr) < 0) {
1446                         continue;
1447                 }
1448                 if (getnameinfo(&ifr->ifr_broadaddr, sizeof(struct sockaddr_in), &bcdd[0], sizeof(bcdd), NULL, 0, NI_NUMERICHOST) < 0) {
1449                         continue;
1450                 }
1451                 if (rpc_set_udp_destination(rpc, bcdd, 111, 1) < 0) {
1452                         return -1;
1453                 }
1454
1455                 if (rpc_pmap_callit_async(rpc, MOUNT_PROGRAM, 2, 0, NULL, 0, callit_cb, data) < 0) {
1456                         return -1;
1457                 }
1458         }
1459
1460         return 0;
1461 }
1462
1463 struct nfs_server_list *nfs_find_local_servers(void)
1464 {
1465         struct rpc_context *rpc;
1466         struct nfs_list_data data = {0, NULL};
1467         struct timeval tv_start, tv_current;
1468         struct ifconf ifc;
1469         int size, loop;
1470         struct pollfd pfd;
1471
1472         rpc = rpc_init_udp_context();
1473         if (rpc == NULL) {
1474                 return NULL;
1475         }
1476
1477         if (rpc_bind_udp(rpc, "0.0.0.0", 0) < 0) {
1478                 rpc_destroy_context(rpc);
1479                 return NULL;
1480         }
1481
1482
1483         /* get list of all interfaces */
1484         size = sizeof(struct ifreq);
1485         ifc.ifc_buf = NULL;
1486         ifc.ifc_len = size;
1487
1488         while(ifc.ifc_len > (size - sizeof(struct ifreq))) {
1489                 size *= 2;
1490
1491                 free(ifc.ifc_buf);
1492                 ifc.ifc_len = size;
1493                 ifc.ifc_buf = malloc(size);
1494                 memset(ifc.ifc_buf, 0, size);
1495                 if (ioctl(rpc_get_fd(rpc), SIOCGIFCONF, (caddr_t)&ifc) < 0) {
1496                         rpc_destroy_context(rpc);
1497                         free(ifc.ifc_buf);
1498                         return NULL;
1499                 }
1500         }
1501
1502         for (loop=0; loop<3; loop++) {
1503                 if (send_nfsd_probes(rpc, &ifc, &data) != 0) {
1504                         rpc_destroy_context(rpc);
1505                         free(ifc.ifc_buf);
1506                         return NULL;
1507                 }
1508
1509                 gettimeofday(&tv_start, NULL);
1510                 for(;;) {
1511                         int mpt;
1512
1513                         pfd.fd = rpc_get_fd(rpc);
1514                         pfd.events = rpc_which_events(rpc);
1515
1516                         gettimeofday(&tv_current, NULL);
1517                         mpt = 1000
1518                         -    (tv_current.tv_sec *1000 + tv_current.tv_usec / 1000)
1519                         +    (tv_start.tv_sec *1000 + tv_start.tv_usec / 1000);
1520
1521                         if (poll(&pfd, 1, mpt) < 0) {
1522                                 free_nfs_srvr_list(data.srvrs);
1523                                 rpc_destroy_context(rpc);
1524                                 return NULL;
1525                         }
1526                         if (pfd.revents == 0) {
1527                                 break;
1528                         }
1529
1530                         if (rpc_service(rpc, pfd.revents) < 0) {
1531                                 break;
1532                         }
1533                 }
1534         }
1535
1536         free(ifc.ifc_buf);
1537         rpc_destroy_context(rpc);
1538
1539         if (data.status != 0) {
1540                 free_nfs_srvr_list(data.srvrs);
1541                 return NULL;
1542         }
1543         return data.srvrs;
1544 }
1545 #endif//WIN32