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
  21 #if defined (WIN32)
  22 #include <winsock2.h>
  23 #define DllExport
  24 #else
  25 #include <strings.h>
  26 #include <unistd.h>
  27 #include <sys/statvfs.h>
  28 #include <poll.h>
  29 #include <sys/ioctl.h>
  30 #include <netdb.h>
  31 #include <sys/socket.h>
  32 #include <net/if.h>
  33 #endif
  34
  35 #ifdef HAVE_CONFIG_H
  36 #include "config.h"
  37 #endif
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <sys/types.h>
  43 #include <sys/stat.h>
  44 #include <fcntl.h>
  45 #include <errno.h>
  46 #ifdef HAVE_SYS_SOCKIO_H
  47 #include <sys/sockio.h>
  48 #endif
  49 #include "libnfs.h"
  50 #include "libnfs-raw.h"
  51 #include "libnfs-raw-mount.h"
  52 #include "libnfs-raw-nfs.h"
  53 #include "libnfs-private.h"
  54
  55 struct sync_cb_data {
  56        int is_finished;
  57        int status;
  58        off_t offset;
  59        void *return_data;
  60        int return_int;
  61 };
  62
  63
  64 static void wait_for_reply(struct rpc_context *rpc, struct sync_cb_data *cb_data)
  65 {
  66         struct pollfd pfd;
  67
  68         while (!cb_data->is_finished) {
  69
  70                 pfd.fd = rpc_get_fd(rpc);
  71                 pfd.events = rpc_which_events(rpc);
  72                 if (poll(&pfd, 1, -1) < 0) {
  73                         rpc_set_error(rpc, "Poll failed");
  74                         cb_data->status = -EIO;
  75                         break;
  76                 }
  77                 if (rpc_service(rpc, pfd.revents) < 0) {
  78                         rpc_set_error(rpc, "rpc_service failed");
  79                         cb_data->status = -EIO;
  80                         break;
  81                 }
  82                 if (rpc_get_fd(rpc) == -1) {
  83                         rpc_set_error(rpc, "Socket closed\n");
  84                         break;
  85                 }
  86         }
  87 }
  88
  89 static void wait_for_nfs_reply(struct nfs_context *nfs, struct sync_cb_data *cb_data)
  90 {
  91         struct pollfd pfd;
  92
  93         while (!cb_data->is_finished) {
  94
  95                 pfd.fd = nfs_get_fd(nfs);
  96                 pfd.events = nfs_which_events(nfs);
  97                 if (poll(&pfd, 1, -1) < 0) {
  98                         nfs_set_error(nfs, "Poll failed");
  99                         cb_data->status = -EIO;
 100                         break;
 101                 }
 102                 if (nfs_service(nfs, pfd.revents) < 0) {
 103                         nfs_set_error(nfs, "nfs_service failed");
 104                         cb_data->status = -EIO;
 105                         break;
 106                 }
 107                 if (nfs_get_fd(nfs) == -1) {
 108                         char *server = strdup(nfs_get_server(nfs));
 109                         char *export = strdup(nfs_get_export(nfs));
 110
 111                         if (nfs_mount(nfs, server, export) != 0) {
 112                                 nfs_set_error(nfs, "Failed to reconnect to nfs server %s", nfs_get_error(nfs));
 113                                 free(server);
 114                                 free(export);
 115                                 break;
 116                         }
 117                         free(server);
 118                         free(export);
 119                 }
 120         }
 121 }
 122
 123
 124
 125
 126
 127
 128 /*
 129  * connect to the server and mount the export
 130  */
 131 static void mount_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 132 {
 133         struct sync_cb_data *cb_data = private_data;
 134
 135         cb_data->is_finished = 1;
 136         cb_data->status = status;
 137
 138         if (status < 0) {
 139                 nfs_set_error(nfs, "mount/mnt call failed with \"%s\"", (char *)data);
 140                 return;
 141         }
 142 }
 143
 144 int nfs_mount(struct nfs_context *nfs, const char *server, const char *export)
 145 {
 146         struct sync_cb_data cb_data;
 147
 148         cb_data.is_finished = 0;
 149
 150         if (nfs_mount_async(nfs, server, export, mount_cb, &cb_data) != 0) {
 151                 nfs_set_error(nfs, "nfs_mount_async failed");
 152                 return -1;
 153         }
 154
 155         wait_for_nfs_reply(nfs, &cb_data);
 156
 157         return cb_data.status;
 158 }
 159
 160
 161 /*
 162  * stat()
 163  */
 164 static void stat_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 165 {
 166         struct sync_cb_data *cb_data = private_data;
 167
 168         cb_data->is_finished = 1;
 169         cb_data->status = status;
 170
 171         if (status < 0) {
 172                 nfs_set_error(nfs, "stat call failed with \"%s\"", (char *)data);
 173                 return;
 174         }
 175
 176         memcpy(cb_data->return_data, data, sizeof(struct stat));
 177 }
 178
 179 int nfs_stat(struct nfs_context *nfs, const char *path, struct stat *st)
 180 {
 181         struct sync_cb_data cb_data;
 182
 183         cb_data.is_finished = 0;
 184         cb_data.return_data = st;
 185
 186         if (nfs_stat_async(nfs, path, stat_cb, &cb_data) != 0) {
 187                 nfs_set_error(nfs, "nfs_stat_async failed");
 188                 return -1;
 189         }
 190
 191         wait_for_nfs_reply(nfs, &cb_data);
 192
 193         return cb_data.status;
 194 }
 195
 196
 197
 198
 199 /*
 200  * open()
 201  */
 202 static void open_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 203 {
 204         struct sync_cb_data *cb_data = private_data;
 205         struct nfsfh *fh, **nfsfh;
 206
 207         cb_data->is_finished = 1;
 208         cb_data->status = status;
 209
 210         if (status < 0) {
 211                 nfs_set_error(nfs, "open call failed with \"%s\"", (char *)data);
 212                 return;
 213         }
 214
 215         fh    = data;
 216         nfsfh = cb_data->return_data;
 217         *nfsfh = fh;
 218 }
 219
 220 int nfs_open(struct nfs_context *nfs, const char *path, int mode, struct nfsfh **nfsfh)
 221 {
 222         struct sync_cb_data cb_data;
 223
 224         cb_data.is_finished = 0;
 225         cb_data.return_data = nfsfh;
 226
 227         if (nfs_open_async(nfs, path, mode, open_cb, &cb_data) != 0) {
 228                 nfs_set_error(nfs, "nfs_open_async failed");
 229                 return -1;
 230         }
 231
 232         wait_for_nfs_reply(nfs, &cb_data);
 233
 234         return cb_data.status;
 235 }
 236
 237
 238
 239
 240 /*
 241  * pread()
 242  */
 243 static void pread_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 244 {
 245         struct sync_cb_data *cb_data = private_data;
 246         char *buffer;
 247         cb_data->is_finished = 1;
 248         cb_data->status = status;
 249
 250         if (status < 0) {
 251                 nfs_set_error(nfs, "pread call failed with \"%s\"", (char *)data);
 252                 return;
 253         }
 254
 255         buffer = cb_data->return_data;
 256         memcpy(buffer, (char *)data, status);
 257 }
 258
 259 int nfs_pread(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, char *buffer)
 260 {
 261         struct sync_cb_data cb_data;
 262
 263         cb_data.is_finished = 0;
 264         cb_data.return_data = buffer;
 265
 266         if (nfs_pread_async(nfs, nfsfh, offset, count, pread_cb, &cb_data) != 0) {
 267                 nfs_set_error(nfs, "nfs_pread_async failed");
 268                 return -1;
 269         }
 270
 271         wait_for_nfs_reply(nfs, &cb_data);
 272
 273         return cb_data.status;
 274 }
 275
 276 /*
 277  * read()
 278  */
 279 int nfs_read(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, char *buffer)
 280 {
 281         return nfs_pread(nfs, nfsfh, nfs_get_current_offset(nfsfh), count, buffer);
 282 }
 283
 284 /*
 285  * close()
 286  */
 287 static void close_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 288 {
 289         struct sync_cb_data *cb_data = private_data;
 290         cb_data->is_finished = 1;
 291         cb_data->status = status;
 292
 293         if (status < 0) {
 294                 nfs_set_error(nfs, "close call failed with \"%s\"", (char *)data);
 295                 return;
 296         }
 297 }
 298
 299 int nfs_close(struct nfs_context *nfs, struct nfsfh *nfsfh)
 300 {
 301         struct sync_cb_data cb_data;
 302
 303         cb_data.is_finished = 0;
 304
 305         if (nfs_close_async(nfs, nfsfh, close_cb, &cb_data) != 0) {
 306                 nfs_set_error(nfs, "nfs_close_async failed");
 307                 return -1;
 308         }
 309
 310         wait_for_nfs_reply(nfs, &cb_data);
 311
 312         return cb_data.status;
 313 }
 314
 315
 316
 317
 318 /*
 319  * fstat()
 320  */
 321 int nfs_fstat(struct nfs_context *nfs, struct nfsfh *nfsfh, struct stat *st)
 322 {
 323         struct sync_cb_data cb_data;
 324
 325         cb_data.is_finished = 0;
 326         cb_data.return_data = st;
 327
 328         if (nfs_fstat_async(nfs, nfsfh, stat_cb, &cb_data) != 0) {
 329                 nfs_set_error(nfs, "nfs_fstat_async failed");
 330                 return -1;
 331         }
 332
 333         wait_for_nfs_reply(nfs, &cb_data);
 334
 335         return cb_data.status;
 336 }
 337
 338
 339 /*
 340  * pwrite()
 341  */
 342 static void pwrite_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 343 {
 344         struct sync_cb_data *cb_data = private_data;
 345         cb_data->is_finished = 1;
 346         cb_data->status = status;
 347
 348         if (status < 0) {
 349                 nfs_set_error(nfs, "pwrite call failed with \"%s\"", (char *)data);
 350                 return;
 351         }
 352 }
 353
 354 int nfs_pwrite(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, char *buf)
 355 {
 356         struct sync_cb_data cb_data;
 357
 358         cb_data.is_finished = 0;
 359
 360         if (nfs_pwrite_async(nfs, nfsfh, offset, count, buf, pwrite_cb, &cb_data) != 0) {
 361                 nfs_set_error(nfs, "nfs_pwrite_async failed");
 362                 return -1;
 363         }
 364
 365         wait_for_nfs_reply(nfs, &cb_data);
 366
 367         return cb_data.status;
 368 }
 369
 370 /*
 371  * write()
 372  */
 373 int nfs_write(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, char *buf)
 374 {
 375         return nfs_pwrite(nfs, nfsfh, nfs_get_current_offset(nfsfh), count, buf);
 376 }
 377
 378
 379 /*
 380  * fsync()
 381  */
 382 static void fsync_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 383 {
 384         struct sync_cb_data *cb_data = private_data;
 385         cb_data->is_finished = 1;
 386         cb_data->status = status;
 387
 388         if (status < 0) {
 389                 nfs_set_error(nfs, "fsync call failed with \"%s\"", (char *)data);
 390                 return;
 391         }
 392 }
 393
 394 int nfs_fsync(struct nfs_context *nfs, struct nfsfh *nfsfh)
 395 {
 396         struct sync_cb_data cb_data;
 397
 398         cb_data.is_finished = 0;
 399
 400         if (nfs_fsync_async(nfs, nfsfh, fsync_cb, &cb_data) != 0) {
 401                 nfs_set_error(nfs, "nfs_fsync_async failed");
 402                 return -1;
 403         }
 404
 405         wait_for_nfs_reply(nfs, &cb_data);
 406
 407         return cb_data.status;
 408 }
 409
 410
 411
 412
 413 /*
 414  * ftruncate()
 415  */
 416 static void ftruncate_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 417 {
 418         struct sync_cb_data *cb_data = private_data;
 419         cb_data->is_finished = 1;
 420         cb_data->status = status;
 421
 422         if (status < 0) {
 423                 nfs_set_error(nfs, "ftruncate call failed with \"%s\"", (char *)data);
 424                 return;
 425         }
 426 }
 427
 428 int nfs_ftruncate(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t length)
 429 {
 430         struct sync_cb_data cb_data;
 431
 432         cb_data.is_finished = 0;
 433
 434         if (nfs_ftruncate_async(nfs, nfsfh, length, ftruncate_cb, &cb_data) != 0) {
 435                 nfs_set_error(nfs, "nfs_ftruncate_async failed");
 436                 return -1;
 437         }
 438
 439         wait_for_nfs_reply(nfs, &cb_data);
 440
 441         return cb_data.status;
 442 }
 443
 444
 445
 446 /*
 447  * truncate()
 448  */
 449 static void truncate_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 450 {
 451         struct sync_cb_data *cb_data = private_data;
 452         cb_data->is_finished = 1;
 453         cb_data->status = status;
 454
 455         if (status < 0) {
 456                 nfs_set_error(nfs, "truncate call failed with \"%s\"", (char *)data);
 457                 return;
 458         }
 459 }
 460
 461 int nfs_truncate(struct nfs_context *nfs, const char *path, off_t length)
 462 {
 463         struct sync_cb_data cb_data;
 464
 465         cb_data.is_finished = 0;
 466
 467         if (nfs_truncate_async(nfs, path, length, truncate_cb, &cb_data) != 0) {
 468                 nfs_set_error(nfs, "nfs_ftruncate_async failed");
 469                 return -1;
 470         }
 471
 472         wait_for_nfs_reply(nfs, &cb_data);
 473
 474         return cb_data.status;
 475 }
 476
 477
 478
 479
 480
 481 /*
 482  * mkdir()
 483  */
 484 static void mkdir_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 485 {
 486         struct sync_cb_data *cb_data = private_data;
 487         cb_data->is_finished = 1;
 488         cb_data->status = status;
 489
 490         if (status < 0) {
 491                 nfs_set_error(nfs, "mkdir call failed with \"%s\"", (char *)data);
 492                 return;
 493         }
 494 }
 495
 496 int nfs_mkdir(struct nfs_context *nfs, const char *path)
 497 {
 498         struct sync_cb_data cb_data;
 499
 500         cb_data.is_finished = 0;
 501
 502         if (nfs_mkdir_async(nfs, path, mkdir_cb, &cb_data) != 0) {
 503                 nfs_set_error(nfs, "nfs_mkdir_async failed");
 504                 return -1;
 505         }
 506
 507         wait_for_nfs_reply(nfs, &cb_data);
 508
 509         return cb_data.status;
 510 }
 511
 512
 513
 514
 515
 516 /*
 517  * rmdir()
 518  */
 519 static void rmdir_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 520 {
 521         struct sync_cb_data *cb_data = private_data;
 522         cb_data->is_finished = 1;
 523         cb_data->status = status;
 524
 525         if (status < 0) {
 526                 nfs_set_error(nfs, "rmdir call failed with \"%s\"", (char *)data);
 527                 return;
 528         }
 529 }
 530
 531 int nfs_rmdir(struct nfs_context *nfs, const char *path)
 532 {
 533         struct sync_cb_data cb_data;
 534
 535         cb_data.is_finished = 0;
 536
 537         if (nfs_rmdir_async(nfs, path, rmdir_cb, &cb_data) != 0) {
 538                 nfs_set_error(nfs, "nfs_rmdir_async failed");
 539                 return -1;
 540         }
 541
 542         wait_for_nfs_reply(nfs, &cb_data);
 543
 544         return cb_data.status;
 545 }
 546
 547
 548
 549 /*
 550  * creat()
 551  */
 552 static void creat_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 553 {
 554         struct sync_cb_data *cb_data = private_data;
 555         struct nfsfh *fh, **nfsfh;
 556
 557         cb_data->is_finished = 1;
 558         cb_data->status = status;
 559
 560         if (status < 0) {
 561                 nfs_set_error(nfs, "creat call failed with \"%s\"", (char *)data);
 562                 return;
 563         }
 564
 565         fh    = data;
 566         nfsfh = cb_data->return_data;
 567         *nfsfh = fh;
 568 }
 569
 570 int nfs_creat(struct nfs_context *nfs, const char *path, int mode, struct nfsfh **nfsfh)
 571 {
 572         struct sync_cb_data cb_data;
 573
 574         cb_data.is_finished = 0;
 575         cb_data.return_data = nfsfh;
 576
 577         if (nfs_creat_async(nfs, path, mode, creat_cb, &cb_data) != 0) {
 578                 nfs_set_error(nfs, "nfs_creat_async failed");
 579                 return -1;
 580         }
 581
 582         wait_for_nfs_reply(nfs, &cb_data);
 583
 584         return cb_data.status;
 585 }
 586
 587
 588
 589
 590 /*
 591  * unlink()
 592  */
 593 static void unlink_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 594 {
 595         struct sync_cb_data *cb_data = private_data;
 596
 597         cb_data->is_finished = 1;
 598         cb_data->status = status;
 599
 600         if (status < 0) {
 601                 nfs_set_error(nfs, "unlink call failed with \"%s\"", (char *)data);
 602                 return;
 603         }
 604 }
 605
 606 int nfs_unlink(struct nfs_context *nfs, const char *path)
 607 {
 608         struct sync_cb_data cb_data;
 609
 610         cb_data.is_finished = 0;
 611
 612         if (nfs_unlink_async(nfs, path, unlink_cb, &cb_data) != 0) {
 613                 nfs_set_error(nfs, "nfs_unlink_async failed");
 614                 return -1;
 615         }
 616
 617         wait_for_nfs_reply(nfs, &cb_data);
 618
 619         return cb_data.status;
 620 }
 621
 622
 623
 624 /*
 625  * opendir()
 626  */
 627 static void opendir_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 628 {
 629         struct sync_cb_data *cb_data = private_data;
 630         struct nfsdir *dir, **nfsdir;
 631
 632         cb_data->is_finished = 1;
 633         cb_data->status = status;
 634
 635         if (status < 0) {
 636                 nfs_set_error(nfs, "opendir call failed with \"%s\"", (char *)data);
 637                 return;
 638         }
 639
 640         dir     = data;
 641         nfsdir  = cb_data->return_data;
 642         *nfsdir = dir;
 643 }
 644
 645 int nfs_opendir(struct nfs_context *nfs, const char *path, struct nfsdir **nfsdir)
 646 {
 647         struct sync_cb_data cb_data;
 648
 649         cb_data.is_finished = 0;
 650         cb_data.return_data = nfsdir;
 651
 652         if (nfs_opendir_async(nfs, path, opendir_cb, &cb_data) != 0) {
 653                 nfs_set_error(nfs, "nfs_opendir_async failed");
 654                 return -1;
 655         }
 656
 657         wait_for_nfs_reply(nfs, &cb_data);
 658
 659         return cb_data.status;
 660 }
 661
 662
 663 /*
 664  * lseek()
 665  */
 666 static void lseek_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 667 {
 668         struct sync_cb_data *cb_data = private_data;
 669
 670         cb_data->is_finished = 1;
 671         cb_data->status = status;
 672
 673         if (status < 0) {
 674                 nfs_set_error(nfs, "lseek call failed with \"%s\"", (char *)data);
 675                 return;
 676         }
 677
 678         if (cb_data->return_data != NULL) {
 679                 memcpy(cb_data->return_data, data, sizeof(off_t));
 680         }
 681 }
 682
 683 int nfs_lseek(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, int whence, off_t *current_offset)
 684 {
 685         struct sync_cb_data cb_data;
 686
 687         cb_data.is_finished = 0;
 688         cb_data.return_data = current_offset;
 689
 690         if (nfs_lseek_async(nfs, nfsfh, offset, whence, lseek_cb, &cb_data) != 0) {
 691                 nfs_set_error(nfs, "nfs_lseek_async failed");
 692                 return -1;
 693         }
 694
 695         wait_for_nfs_reply(nfs, &cb_data);
 696
 697         return cb_data.status;
 698 }
 699
 700
 701
 702 /*
 703  * statvfs()
 704  */
 705 static void statvfs_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 706 {
 707         struct sync_cb_data *cb_data = private_data;
 708
 709         cb_data->is_finished = 1;
 710         cb_data->status = status;
 711
 712         if (status < 0) {
 713                 nfs_set_error(nfs, "statvfs call failed with \"%s\"", (char *)data);
 714                 return;
 715         }
 716
 717         memcpy(cb_data->return_data, data, sizeof(struct statvfs));
 718 }
 719
 720 int nfs_statvfs(struct nfs_context *nfs, const char *path, struct statvfs *svfs)
 721 {
 722         struct sync_cb_data cb_data;
 723
 724         cb_data.is_finished = 0;
 725         cb_data.return_data = svfs;
 726
 727         if (nfs_statvfs_async(nfs, path, statvfs_cb, &cb_data) != 0) {
 728                 nfs_set_error(nfs, "nfs_statvfs_async failed");
 729                 return -1;
 730         }
 731
 732         wait_for_nfs_reply(nfs, &cb_data);
 733
 734         return cb_data.status;
 735 }
 736
 737
 738
 739
 740
 741 /*
 742  * readlink()
 743  */
 744 static void readlink_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 745 {
 746         struct sync_cb_data *cb_data = private_data;
 747
 748         cb_data->is_finished = 1;
 749         cb_data->status = status;
 750
 751         if (status < 0) {
 752                 nfs_set_error(nfs, "readlink call failed with \"%s\"", (char *)data);
 753                 return;
 754         }
 755
 756         if (strlen(data) > (size_t)cb_data->return_int) {
 757                 nfs_set_error(nfs, "Too small buffer for readlink");
 758                 cb_data->status = -ENAMETOOLONG;
 759                 return;
 760         }
 761
 762         memcpy(cb_data->return_data, data, strlen(data)+1);
 763 }
 764
 765 int nfs_readlink(struct nfs_context *nfs, const char *path, char *buf, int bufsize)
 766 {
 767         struct sync_cb_data cb_data;
 768
 769         cb_data.is_finished = 0;
 770         cb_data.return_data = buf;
 771         cb_data.return_int  = bufsize;
 772
 773         if (nfs_readlink_async(nfs, path, readlink_cb, &cb_data) != 0) {
 774                 nfs_set_error(nfs, "nfs_readlink_async failed");
 775                 return -1;
 776         }
 777
 778         wait_for_nfs_reply(nfs, &cb_data);
 779
 780         return cb_data.status;
 781 }
 782
 783
 784
 785 /*
 786  * chmod()
 787  */
 788 static void chmod_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 789 {
 790         struct sync_cb_data *cb_data = private_data;
 791
 792         cb_data->is_finished = 1;
 793         cb_data->status = status;
 794
 795         if (status < 0) {
 796                 nfs_set_error(nfs, "chmod call failed with \"%s\"", (char *)data);
 797                 return;
 798         }
 799 }
 800
 801 int nfs_chmod(struct nfs_context *nfs, const char *path, int mode)
 802 {
 803         struct sync_cb_data cb_data;
 804
 805         cb_data.is_finished = 0;
 806
 807         if (nfs_chmod_async(nfs, path, mode, chmod_cb, &cb_data) != 0) {
 808                 nfs_set_error(nfs, "nfs_chmod_async failed");
 809                 return -1;
 810         }
 811
 812         wait_for_nfs_reply(nfs, &cb_data);
 813
 814         return cb_data.status;
 815 }
 816
 817
 818
 819
 820 /*
 821  * fchmod()
 822  */
 823 static void fchmod_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 824 {
 825         struct sync_cb_data *cb_data = private_data;
 826
 827         cb_data->is_finished = 1;
 828         cb_data->status = status;
 829
 830         if (status < 0) {
 831                 nfs_set_error(nfs, "fchmod call failed with \"%s\"", (char *)data);
 832                 return;
 833         }
 834 }
 835
 836 int nfs_fchmod(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode)
 837 {
 838         struct sync_cb_data cb_data;
 839
 840         cb_data.is_finished = 0;
 841
 842         if (nfs_fchmod_async(nfs, nfsfh, mode, fchmod_cb, &cb_data) != 0) {
 843                 nfs_set_error(nfs, "nfs_fchmod_async failed");
 844                 return -1;
 845         }
 846
 847         wait_for_nfs_reply(nfs, &cb_data);
 848
 849         return cb_data.status;
 850 }
 851
 852
 853
 854
 855 /*
 856  * chown()
 857  */
 858 static void chown_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 859 {
 860         struct sync_cb_data *cb_data = private_data;
 861
 862         cb_data->is_finished = 1;
 863         cb_data->status = status;
 864
 865         if (status < 0) {
 866                 nfs_set_error(nfs, "chown call failed with \"%s\"", (char *)data);
 867                 return;
 868         }
 869 }
 870
 871 int nfs_chown(struct nfs_context *nfs, const char *path, int uid, int gid)
 872 {
 873         struct sync_cb_data cb_data;
 874
 875         cb_data.is_finished = 0;
 876
 877         if (nfs_chown_async(nfs, path, uid, gid, chown_cb, &cb_data) != 0) {
 878                 nfs_set_error(nfs, "nfs_chown_async failed");
 879                 return -1;
 880         }
 881
 882         wait_for_nfs_reply(nfs, &cb_data);
 883
 884         return cb_data.status;
 885 }
 886
 887 /*
 888  * fchown()
 889  */
 890 static void fchown_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 891 {
 892         struct sync_cb_data *cb_data = private_data;
 893
 894         cb_data->is_finished = 1;
 895         cb_data->status = status;
 896
 897         if (status < 0) {
 898                 nfs_set_error(nfs, "fchown call failed with \"%s\"", (char *)data);
 899                 return;
 900         }
 901 }
 902
 903 int nfs_fchown(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid)
 904 {
 905         struct sync_cb_data cb_data;
 906
 907         cb_data.is_finished = 0;
 908
 909         if (nfs_fchown_async(nfs, nfsfh, uid, gid, fchown_cb, &cb_data) != 0) {
 910                 nfs_set_error(nfs, "nfs_fchown_async failed");
 911                 return -1;
 912         }
 913
 914         wait_for_nfs_reply(nfs, &cb_data);
 915
 916         return cb_data.status;
 917 }
 918
 919
 920
 921 /*
 922  * utimes()
 923  */
 924 static void utimes_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 925 {
 926         struct sync_cb_data *cb_data = private_data;
 927
 928         cb_data->is_finished = 1;
 929         cb_data->status = status;
 930
 931         if (status < 0) {
 932                 nfs_set_error(nfs, "utimes call failed with \"%s\"", (char *)data);
 933                 return;
 934         }
 935 }
 936
 937 int nfs_utimes(struct nfs_context *nfs, const char *path, struct timeval *times)
 938 {
 939         struct sync_cb_data cb_data;
 940
 941         cb_data.is_finished = 0;
 942
 943         if (nfs_utimes_async(nfs, path, times, utimes_cb, &cb_data) != 0) {
 944                 nfs_set_error(nfs, "nfs_utimes_async failed");
 945                 return -1;
 946         }
 947
 948         wait_for_nfs_reply(nfs, &cb_data);
 949
 950         return cb_data.status;
 951 }
 952
 953
 954
 955 /*
 956  * utime()
 957  */
 958 static void utime_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 959 {
 960         struct sync_cb_data *cb_data = private_data;
 961
 962         cb_data->is_finished = 1;
 963         cb_data->status = status;
 964
 965         if (status < 0) {
 966                 nfs_set_error(nfs, "utime call failed with \"%s\"", (char *)data);
 967                 return;
 968         }
 969 }
 970
 971 int nfs_utime(struct nfs_context *nfs, const char *path, struct utimbuf *times)
 972 {
 973         struct sync_cb_data cb_data;
 974
 975         cb_data.is_finished = 0;
 976
 977         if (nfs_utime_async(nfs, path, times, utime_cb, &cb_data) != 0) {
 978                 nfs_set_error(nfs, "nfs_utimes_async failed");
 979                 return -1;
 980         }
 981
 982         wait_for_nfs_reply(nfs, &cb_data);
 983
 984         return cb_data.status;
 985 }
 986
 987
 988
 989
 990 /*
 991  * access()
 992  */
 993 static void access_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 994 {
 995         struct sync_cb_data *cb_data = private_data;
 996
 997         cb_data->is_finished = 1;
 998         cb_data->status = status;
 999
1000         if (status < 0) {
1001                 nfs_set_error(nfs, "access call failed with \"%s\"", (char *)data);
1002                 return;
1003         }
1004 }
1005
1006 int nfs_access(struct nfs_context *nfs, const char *path, int mode)
1007 {
1008         struct sync_cb_data cb_data;
1009
1010         cb_data.is_finished = 0;
1011
1012         if (nfs_access_async(nfs, path, mode, access_cb, &cb_data) != 0) {
1013                 nfs_set_error(nfs, "nfs_access_async failed");
1014                 return -1;
1015         }
1016
1017         wait_for_nfs_reply(nfs, &cb_data);
1018
1019         return cb_data.status;
1020 }
1021
1022
1023
1024 /*
1025  * symlink()
1026  */
1027 static void symlink_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
1028 {
1029         struct sync_cb_data *cb_data = private_data;
1030
1031         cb_data->is_finished = 1;
1032         cb_data->status = status;
1033
1034         if (status < 0) {
1035                 nfs_set_error(nfs, "symlink call failed with \"%s\"", (char *)data);
1036                 return;
1037         }
1038 }
1039
1040 int nfs_symlink(struct nfs_context *nfs, const char *oldpath, const char *newpath)
1041 {
1042         struct sync_cb_data cb_data;
1043
1044         cb_data.is_finished = 0;
1045
1046         if (nfs_symlink_async(nfs, oldpath, newpath, symlink_cb, &cb_data) != 0) {
1047                 nfs_set_error(nfs, "nfs_symlink_async failed");
1048                 return -1;
1049         }
1050
1051         wait_for_nfs_reply(nfs, &cb_data);
1052
1053         return cb_data.status;
1054 }
1055
1056
1057
1058 /*
1059  * rename()
1060  */
1061 static void rename_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
1062 {
1063         struct sync_cb_data *cb_data = private_data;
1064
1065         cb_data->is_finished = 1;
1066         cb_data->status = status;
1067
1068         if (status < 0) {
1069                 nfs_set_error(nfs, "rename call failed with \"%s\"", (char *)data);
1070                 return;
1071         }
1072 }
1073
1074 int nfs_rename(struct nfs_context *nfs, const char *oldpath, const char *newpath)
1075 {
1076         struct sync_cb_data cb_data;
1077
1078         cb_data.is_finished = 0;
1079
1080         if (nfs_rename_async(nfs, oldpath, newpath, rename_cb, &cb_data) != 0) {
1081                 nfs_set_error(nfs, "nfs_rename_async failed");
1082                 return -1;
1083         }
1084
1085         wait_for_nfs_reply(nfs, &cb_data);
1086
1087         return cb_data.status;
1088 }
1089
1090
1091
1092 /*
1093  * link()
1094  */
1095 static void link_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
1096 {
1097         struct sync_cb_data *cb_data = private_data;
1098
1099         cb_data->is_finished = 1;
1100         cb_data->status = status;
1101
1102         if (status < 0) {
1103                 nfs_set_error(nfs, "link call failed with \"%s\"", (char *)data);
1104                 return;
1105         }
1106 }
1107
1108 int nfs_link(struct nfs_context *nfs, const char *oldpath, const char *newpath)
1109 {
1110         struct sync_cb_data cb_data;
1111
1112         cb_data.is_finished = 0;
1113
1114         if (nfs_link_async(nfs, oldpath, newpath, link_cb, &cb_data) != 0) {
1115                 nfs_set_error(nfs, "nfs_link_async failed");
1116                 return -1;
1117         }
1118
1119         wait_for_nfs_reply(nfs, &cb_data);
1120
1121         return cb_data.status;
1122 }
1123
1124 void mount_getexports_cb(struct rpc_context *mount_context, int status, void *data, void *private_data)
1125 {
1126         struct sync_cb_data *cb_data = private_data;
1127         exports export = *(exports *)data;
1128
1129         cb_data->is_finished = 1;
1130         cb_data->status = status;
1131         cb_data->return_data = NULL;
1132
1133         if (status != 0) {
1134                 rpc_set_error(mount_context, "mount/export call failed with \"%s\"", (char *)data);
1135                 return;
1136         }
1137
1138         while (export != NULL) {
1139                 exports new_export;
1140
1141                 new_export = malloc(sizeof(*new_export));
1142                 memset(new_export, 0, sizeof(*new_export));
1143                 new_export->ex_dir  = strdup(export->ex_dir);
1144                 new_export->ex_next = cb_data->return_data;
1145
1146                 cb_data->return_data = new_export;
1147
1148                 export = export->ex_next;
1149         }
1150 }
1151
1152 struct exportnode *mount_getexports(const char *server)
1153 {
1154         struct sync_cb_data cb_data;
1155         struct rpc_context *rpc;
1156
1157
1158         cb_data.is_finished = 0;
1159         cb_data.return_data = NULL;
1160
1161         rpc = rpc_init_context();
1162         if (mount_getexports_async(rpc, server, mount_getexports_cb, &cb_data) != 0) {
1163                 rpc_destroy_context(rpc);
1164                 return NULL;
1165         }
1166
1167         wait_for_reply(rpc, &cb_data);
1168         rpc_destroy_context(rpc);
1169
1170         return cb_data.return_data;
1171 }
1172
1173 void mount_free_export_list(struct exportnode *exports)
1174 {
1175         struct exportnode *tmp;
1176
1177         while ((tmp = exports)) {
1178                 exports = exports->ex_next;
1179                 free(tmp->ex_dir);
1180                 free(tmp);
1181         }
1182 }
1183
1184
1185
1186 #if !defined(WIN32)
1187 void free_nfs_srvr_list(struct nfs_server_list *srv)
1188 {
1189         while (srv != NULL) {
1190                 struct nfs_server_list *next = srv->next;
1191
1192                 free(srv->addr);
1193                 free(srv);
1194                 srv = next;
1195         }
1196 }
1197
1198 struct nfs_list_data {
1199        int status;
1200        struct nfs_server_list *srvrs;
1201 };
1202
1203 void callit_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data)
1204 {
1205         struct nfs_list_data *srv_data = private_data;
1206         struct sockaddr *sin;
1207         char hostdd[16];
1208         struct nfs_server_list *srvr;
1209
1210         if (status == RPC_STATUS_CANCEL) {
1211                 return;
1212         }
1213         if (status != 0) {
1214                 srv_data->status = -1;
1215                 return;
1216         }
1217
1218         sin = rpc_get_recv_sockaddr(rpc);
1219         if (sin == NULL) {
1220                 rpc_set_error(rpc, "failed to get sockaddr in CALLIT callback");
1221                 srv_data->status = -1;
1222                 return;
1223         }
1224
1225         if (getnameinfo(sin, sizeof(struct sockaddr_in), &hostdd[0], sizeof(hostdd), NULL, 0, NI_NUMERICHOST) < 0) {
1226                 rpc_set_error(rpc, "getnameinfo failed in CALLIT callback");
1227                 srv_data->status = -1;
1228                 return;
1229         }
1230
1231         /* check for dupes */
1232         for (srvr = srv_data->srvrs; srvr; srvr = srvr->next) {
1233                 if (!strcmp(hostdd, srvr->addr)) {
1234                         return;
1235                 }
1236         }
1237
1238         srvr = malloc(sizeof(struct nfs_server_list));
1239         if (srvr == NULL) {
1240                 rpc_set_error(rpc, "Malloc failed when allocating server structure");
1241                 srv_data->status = -1;
1242                 return;
1243         }
1244
1245         srvr->addr = strdup(hostdd);
1246         if (srvr->addr == NULL) {
1247                 rpc_set_error(rpc, "Strdup failed when allocating server structure");
1248                 free(srvr);
1249                 srv_data->status = -1;
1250                 return;
1251         }
1252
1253         srvr->next = srv_data->srvrs;
1254         srv_data->srvrs = srvr;
1255 }
1256
1257 static int send_nfsd_probes(struct rpc_context *rpc, struct ifconf *ifc, struct nfs_list_data *data)
1258 {
1259         char *ptr;
1260
1261         for (ptr =(char *)(ifc->ifc_buf); ptr < (char *)(ifc->ifc_buf) + ifc->ifc_len; ) {
1262                 struct ifreq *ifr;
1263                 char bcdd[16];
1264
1265                 ifr = (struct ifreq *)ptr;
1266 #ifdef HAVE_SOCKADDR_LEN
1267                 if (ifr->ifr_addr.sa_len > sizeof(struct sockaddr)) {
1268                         ptr += sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
1269                 } else {
1270                         ptr += sizeof(ifr->ifr_name) + sizeof(struct sockaddr);
1271                 }
1272 #else
1273                 ptr += sizeof(struct ifreq);
1274 #endif
1275
1276                 if (ifr->ifr_addr.sa_family != AF_INET) {
1277                         continue;
1278                 }
1279                 if (ioctl(rpc_get_fd(rpc), SIOCGIFFLAGS, ifr) < 0) {
1280                         return -1;
1281                 }
1282                 if (!(ifr->ifr_flags & IFF_UP)) {
1283                         continue;
1284                 }
1285                 if (ifr->ifr_flags & IFF_LOOPBACK) {
1286                         continue;
1287                 }
1288                 if (!(ifr->ifr_flags & IFF_BROADCAST)) {
1289                         continue;
1290                 }
1291                 if (ioctl(rpc_get_fd(rpc), SIOCGIFBRDADDR, ifr) < 0) {
1292                         continue;
1293                 }
1294                 if (getnameinfo(&ifr->ifr_broadaddr, sizeof(struct sockaddr_in), &bcdd[0], sizeof(bcdd), NULL, 0, NI_NUMERICHOST) < 0) {
1295                         continue;
1296                 }
1297                 if (rpc_set_udp_destination(rpc, bcdd, 111, 1) < 0) {
1298                         return -1;
1299                 }
1300
1301                 if (rpc_pmap_callit_async(rpc, MOUNT_PROGRAM, 2, 0, NULL, 0, callit_cb, data) < 0) {
1302                         return -1;
1303                 }
1304         }
1305
1306         return 0;
1307 }
1308
1309 struct nfs_server_list *nfs_find_local_servers(void)
1310 {
1311         struct rpc_context *rpc;
1312         struct nfs_list_data data = {0, NULL};
1313         struct timeval tv_start, tv_current;
1314         struct ifconf ifc;
1315         int size, loop;
1316         struct pollfd pfd;
1317
1318         rpc = rpc_init_udp_context();
1319         if (rpc == NULL) {
1320                 return NULL;
1321         }
1322
1323         if (rpc_bind_udp(rpc, "0.0.0.0", 0) < 0) {
1324                 rpc_destroy_context(rpc);
1325                 return NULL;
1326         }
1327
1328
1329         /* get list of all interfaces */
1330         size = sizeof(struct ifreq);
1331         ifc.ifc_buf = NULL;
1332         ifc.ifc_len = size;
1333
1334         while(ifc.ifc_len > (size - sizeof(struct ifreq))) {
1335                 size *= 2;
1336
1337                 free(ifc.ifc_buf);
1338                 ifc.ifc_len = size;
1339                 ifc.ifc_buf = malloc(size);
1340                 memset(ifc.ifc_buf, 0, size);
1341                 if (ioctl(rpc_get_fd(rpc), SIOCGIFCONF, (caddr_t)&ifc) < 0) {
1342                         rpc_destroy_context(rpc);
1343                         free(ifc.ifc_buf);
1344                         return NULL;
1345                 }
1346         }
1347
1348         for (loop=0; loop<3; loop++) {
1349                 if (send_nfsd_probes(rpc, &ifc, &data) != 0) {
1350                         rpc_destroy_context(rpc);
1351                         free(ifc.ifc_buf);
1352                         return NULL;
1353                 }
1354
1355                 gettimeofday(&tv_start, NULL);
1356                 for(;;) {
1357                         int mpt;
1358
1359                         pfd.fd = rpc_get_fd(rpc);
1360                         pfd.events = rpc_which_events(rpc);
1361
1362                         gettimeofday(&tv_current, NULL);
1363                         mpt = 1000
1364                         -    (tv_current.tv_sec *1000 + tv_current.tv_usec / 1000)
1365                         +    (tv_start.tv_sec *1000 + tv_start.tv_usec / 1000);
1366
1367                         if (poll(&pfd, 1, mpt) < 0) {
1368                                 free_nfs_srvr_list(data.srvrs);
1369                                 rpc_destroy_context(rpc);
1370                                 return NULL;
1371                         }
1372                         if (pfd.revents == 0) {
1373                                 break;
1374                         }
1375
1376                         if (rpc_service(rpc, pfd.revents) < 0) {
1377                                 break;
1378                         }
1379                 }
1380         }
1381
1382         free(ifc.ifc_buf);
1383         rpc_destroy_context(rpc);
1384
1385         if (data.status != 0) {
1386                 free_nfs_srvr_list(data.srvrs);
1387                 return NULL;
1388         }
1389
1390         return data.srvrs;
1391 }
1392 #endif