lib/libnfs.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 <sys/statvfs.h>
  26 #include <utime.h>
  27 #include <unistd.h>
  28 #endif/*WIN32*/
  29
  30 #define _GNU_SOURCE
  31
  32 #include <stdio.h>
  33 #include <stdarg.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <errno.h>
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <fcntl.h>
  40 #include "libnfs.h"
  41 #include "libnfs-raw.h"
  42 #include "libnfs-raw-mount.h"
  43 #include "libnfs-raw-nfs.h"
  44 #include "libnfs-private.h"
  45
  46 struct nfsdir {
  47        struct nfsdirent *entries;
  48        struct nfsdirent *current;
  49 };
  50
  51 struct nfsfh {
  52        struct nfs_fh3 fh;
  53        int is_sync;
  54        off_t offset;
  55 };
  56
  57 struct nfs_context {
  58        struct rpc_context *rpc;
  59        char *server;
  60        char *export;
  61        struct nfs_fh3 rootfh;
  62        size_t readmax;
  63        size_t writemax;
  64 };
  65
  66 void nfs_free_nfsdir(struct nfsdir *nfsdir)
  67 {
  68         while (nfsdir->entries) {
  69                 struct nfsdirent *dirent = nfsdir->entries->next;
  70                 if (nfsdir->entries->name != NULL) {
  71                         free(nfsdir->entries->name);
  72                 }
  73                 free(nfsdir->entries);
  74                 nfsdir->entries = dirent;
  75         }
  76         free(nfsdir);
  77 }
  78
  79 struct nfs_cb_data;
  80 typedef int (*continue_func)(struct nfs_context *nfs, struct nfs_cb_data *data);
  81
  82 struct nfs_cb_data {
  83        struct nfs_context *nfs;
  84        struct nfsfh *nfsfh;
  85        char *saved_path, *path;
  86
  87        nfs_cb cb;
  88        void *private_data;
  89
  90        continue_func continue_cb;
  91        void *continue_data;
  92        void (*free_continue_data)(void *);
  93        int continue_int;
  94
  95        struct nfs_fh3 fh;
  96
  97        /* for multi-read/write calls. */
  98        int error;
  99        int cancel;
 100        int num_calls;
 101        off_t start_offset, max_offset;
 102        char *buffer;
 103 };
 104
 105 struct nfs_mcb_data {
 106        struct nfs_cb_data *data;
 107        off_t offset;
 108        size_t count;
 109 };
 110
 111 static int nfs_lookup_path_async_internal(struct nfs_context *nfs, struct nfs_cb_data *data, struct nfs_fh3 *fh);
 112
 113
 114 void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth)
 115 {
 116         rpc_set_auth(nfs->rpc, auth);
 117 }
 118
 119 int nfs_get_fd(struct nfs_context *nfs)
 120 {
 121         return rpc_get_fd(nfs->rpc);
 122 }
 123
 124 int nfs_queue_length(struct nfs_context *nfs)
 125 {
 126         return rpc_queue_length(nfs->rpc);
 127 }
 128
 129 int nfs_which_events(struct nfs_context *nfs)
 130 {
 131         return rpc_which_events(nfs->rpc);
 132 }
 133
 134 int nfs_service(struct nfs_context *nfs, int revents)
 135 {
 136         return rpc_service(nfs->rpc, revents);
 137 }
 138
 139 char *nfs_get_error(struct nfs_context *nfs)
 140 {
 141         return rpc_get_error(nfs->rpc);
 142 };
 143
 144 struct nfs_context *nfs_init_context(void)
 145 {
 146         struct nfs_context *nfs;
 147
 148         nfs = malloc(sizeof(struct nfs_context));
 149         if (nfs == NULL) {
 150                 return NULL;
 151         }
 152         nfs->rpc = rpc_init_context();
 153         if (nfs->rpc == NULL) {
 154                 free(nfs);
 155                 return NULL;
 156         }
 157
 158         nfs->server = NULL;
 159         nfs->export = NULL;
 160
 161         nfs->rootfh.data.data_len = 0;
 162         nfs->rootfh.data.data_val = NULL;
 163
 164         return nfs;
 165 }
 166
 167 void nfs_destroy_context(struct nfs_context *nfs)
 168 {
 169         rpc_destroy_context(nfs->rpc);
 170         nfs->rpc = NULL;
 171
 172         if (nfs->server) {
 173                 free(nfs->server);
 174                 nfs->server = NULL;
 175         }
 176
 177         if (nfs->export) {
 178                 free(nfs->export);
 179                 nfs->export = NULL;
 180         }
 181
 182         if (nfs->rootfh.data.data_val != NULL) {
 183                 free(nfs->rootfh.data.data_val);
 184                 nfs->rootfh.data.data_val = NULL;
 185         }
 186
 187         free(nfs);
 188 }
 189
 190 void free_nfs_cb_data(struct nfs_cb_data *data)
 191 {
 192         if (data->saved_path != NULL) {
 193                 free(data->saved_path);
 194                 data->saved_path = NULL;
 195         }
 196
 197         if (data->continue_data != NULL) {
 198                 data->free_continue_data(data->continue_data);
 199                 data->continue_data = NULL;
 200         }
 201
 202         if (data->fh.data.data_val != NULL) {
 203                 free(data->fh.data.data_val);
 204                 data->fh.data.data_val = NULL;
 205         }
 206
 207         if (data->buffer != NULL) {
 208                 free(data->buffer);
 209                 data->buffer = NULL;
 210         }
 211
 212         free(data);
 213 }
 214
 215
 216
 217
 218
 219 static void nfs_mount_10_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
 220 {
 221         struct nfs_cb_data *data = private_data;
 222         struct nfs_context *nfs = data->nfs;
 223
 224         if (status == RPC_STATUS_ERROR) {
 225                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 226                 free_nfs_cb_data(data);
 227                 return;
 228         }
 229         if (status == RPC_STATUS_CANCEL) {
 230                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 231                 free_nfs_cb_data(data);
 232                 return;
 233         }
 234
 235         data->cb(0, nfs, NULL, data->private_data);
 236         free_nfs_cb_data(data);
 237 }
 238
 239 static void nfs_mount_9_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 240 {
 241         struct nfs_cb_data *data = private_data;
 242         struct nfs_context *nfs = data->nfs;
 243         FSINFO3res *res = command_data;
 244
 245         if (status == RPC_STATUS_ERROR) {
 246                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 247                 free_nfs_cb_data(data);
 248                 return;
 249         }
 250         if (status == RPC_STATUS_CANCEL) {
 251                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 252                 free_nfs_cb_data(data);
 253                 return;
 254         }
 255
 256         nfs->readmax = res->FSINFO3res_u.resok.rtmax;
 257         nfs->writemax = res->FSINFO3res_u.resok.wtmax;
 258
 259         if (rpc_nfs_getattr_async(rpc, nfs_mount_10_cb, &nfs->rootfh, data) != 0) {
 260                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 261                 free_nfs_cb_data(data);
 262                 return;
 263         }
 264 }
 265
 266 static void nfs_mount_8_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 267 {
 268         struct nfs_cb_data *data = private_data;
 269         struct nfs_context *nfs = data->nfs;
 270
 271         if (status == RPC_STATUS_ERROR) {
 272                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 273                 free_nfs_cb_data(data);
 274                 return;
 275         }
 276         if (status == RPC_STATUS_CANCEL) {
 277                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 278                 free_nfs_cb_data(data);
 279                 return;
 280         }
 281
 282         if (rpc_nfs_fsinfo_async(rpc, nfs_mount_9_cb, &nfs->rootfh, data) != 0) {
 283                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 284                 free_nfs_cb_data(data);
 285                 return;
 286         }
 287 }
 288
 289
 290 static void nfs_mount_7_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 291 {
 292         struct nfs_cb_data *data = private_data;
 293         struct nfs_context *nfs = data->nfs;
 294
 295         if (status == RPC_STATUS_ERROR) {
 296                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 297                 free_nfs_cb_data(data);
 298                 return;
 299         }
 300         if (status == RPC_STATUS_CANCEL) {
 301                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 302                 free_nfs_cb_data(data);
 303                 return;
 304         }
 305
 306         if (rpc_nfs_null_async(rpc, nfs_mount_8_cb, data) != 0) {
 307                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 308                 free_nfs_cb_data(data);
 309                 return;
 310         }
 311 }
 312
 313
 314 static void nfs_mount_6_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 315 {
 316         struct nfs_cb_data *data = private_data;
 317         struct nfs_context *nfs = data->nfs;
 318         mountres3 *res;
 319
 320         if (status == RPC_STATUS_ERROR) {
 321                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 322                 free_nfs_cb_data(data);
 323                 return;
 324         }
 325         if (status == RPC_STATUS_CANCEL) {
 326                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 327                 free_nfs_cb_data(data);
 328                 return;
 329         }
 330
 331         res = command_data;
 332         if (res->fhs_status != MNT3_OK) {
 333                 rpc_set_error(rpc, "RPC error: Mount failed with error %s(%d) %s(%d)", mountstat3_to_str(res->fhs_status), res->fhs_status, strerror(-mountstat3_to_errno(res->fhs_status)), -mountstat3_to_errno(res->fhs_status));
 334                 data->cb(mountstat3_to_errno(res->fhs_status), nfs, rpc_get_error(rpc), data->private_data);
 335                 free_nfs_cb_data(data);
 336                 return;
 337         }
 338
 339         nfs->rootfh.data.data_len = res->mountres3_u.mountinfo.fhandle.fhandle3_len;
 340         nfs->rootfh.data.data_val = malloc(nfs->rootfh.data.data_len);
 341         if (nfs->rootfh.data.data_val == NULL) {
 342                 rpc_set_error(rpc, "Out of memory. Could not allocate memory to store root filehandle");
 343                 data->cb(-ENOMEM, nfs, rpc_get_error(rpc), data->private_data);
 344                 free_nfs_cb_data(data);
 345                 return;
 346         }
 347         memcpy(nfs->rootfh.data.data_val, res->mountres3_u.mountinfo.fhandle.fhandle3_val, nfs->rootfh.data.data_len);
 348
 349         rpc_disconnect(rpc, "normal disconnect");
 350         if (rpc_connect_async(rpc, nfs->server, 2049, nfs_mount_7_cb, data) != 0) {
 351                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 352                 free_nfs_cb_data(data);
 353                 return;
 354         }
 355         /* NFS TCP connections we want to autoreconnect after sessions are torn down (due to inactivity or error) */
 356         rpc_set_autoreconnect(rpc);
 357 }
 358
 359
 360 static void nfs_mount_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 361 {
 362         struct nfs_cb_data *data = private_data;
 363         struct nfs_context *nfs = data->nfs;
 364
 365         if (status == RPC_STATUS_ERROR) {
 366                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 367                 free_nfs_cb_data(data);
 368                 return;
 369         }
 370         if (status == RPC_STATUS_CANCEL) {
 371                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 372                 free_nfs_cb_data(data);
 373                 return;
 374         }
 375
 376         if (rpc_mount_mnt_async(rpc, nfs_mount_6_cb, nfs->export, data) != 0) {
 377                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 378                 free_nfs_cb_data(data);
 379                 return;
 380         }
 381 }
 382
 383 static void nfs_mount_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 384 {
 385         struct nfs_cb_data *data = private_data;
 386         struct nfs_context *nfs = data->nfs;
 387
 388         if (status == RPC_STATUS_ERROR) {
 389                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 390                 free_nfs_cb_data(data);
 391                 return;
 392         }
 393         if (status == RPC_STATUS_CANCEL) {
 394                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 395                 free_nfs_cb_data(data);
 396                 return;
 397         }
 398
 399         if (rpc_mount_null_async(rpc, nfs_mount_5_cb, data) != 0) {
 400                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 401                 free_nfs_cb_data(data);
 402                 return;
 403         }
 404 }
 405
 406 static void nfs_mount_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 407 {
 408         struct nfs_cb_data *data = private_data;
 409         struct nfs_context *nfs = data->nfs;
 410         uint32_t mount_port;
 411
 412         if (status == RPC_STATUS_ERROR) {
 413                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 414                 free_nfs_cb_data(data);
 415                 return;
 416         }
 417         if (status == RPC_STATUS_CANCEL) {
 418                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 419                 free_nfs_cb_data(data);
 420                 return;
 421         }
 422
 423         mount_port = *(uint32_t *)command_data;
 424         if (mount_port == 0) {
 425                 rpc_set_error(rpc, "RPC error. Mount program is not available on %s", nfs->server);
 426                 data->cb(-ENOENT, nfs, command_data, data->private_data);
 427                 free_nfs_cb_data(data);
 428                 return;
 429         }
 430
 431         rpc_disconnect(rpc, "normal disconnect");
 432         if (rpc_connect_async(rpc, nfs->server, mount_port, nfs_mount_4_cb, data) != 0) {
 433                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 434                 free_nfs_cb_data(data);
 435                 return;
 436         }
 437 }
 438
 439
 440 static void nfs_mount_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 441 {
 442         struct nfs_cb_data *data = private_data;
 443         struct nfs_context *nfs = data->nfs;
 444
 445         if (status == RPC_STATUS_ERROR) {
 446                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 447                 free_nfs_cb_data(data);
 448                 return;
 449         }
 450         if (status == RPC_STATUS_CANCEL) {
 451                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 452                 free_nfs_cb_data(data);
 453                 return;
 454         }
 455
 456         if (rpc_pmap_getport_async(rpc, MOUNT_PROGRAM, MOUNT_V3, nfs_mount_3_cb, private_data) != 0) {
 457                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 458                 free_nfs_cb_data(data);
 459                 return;
 460         }
 461 }
 462
 463 static void nfs_mount_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 464 {
 465         struct nfs_cb_data *data = private_data;
 466         struct nfs_context *nfs = data->nfs;
 467
 468         if (status == RPC_STATUS_ERROR) {
 469                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 470                 free_nfs_cb_data(data);
 471                 return;
 472         }
 473         if (status == RPC_STATUS_CANCEL) {
 474                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 475                 free_nfs_cb_data(data);
 476                 return;
 477         }
 478
 479         if (rpc_pmap_null_async(rpc, nfs_mount_2_cb, data) != 0) {
 480                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 481                 free_nfs_cb_data(data);
 482                 return;
 483         }
 484 }
 485
 486 /*
 487  * Async call for mounting an nfs share and geting the root filehandle
 488  */
 489 int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *export, nfs_cb cb, void *private_data)
 490 {
 491         struct nfs_cb_data *data;
 492         char *new_server, *new_export;
 493
 494         data = malloc(sizeof(struct nfs_cb_data));
 495         if (data == NULL) {
 496                 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
 497                 return -1;
 498         }
 499         memset(data, 0, sizeof(struct nfs_cb_data));
 500         new_server = strdup(server);
 501         new_export = strdup(export);
 502         if (nfs->server != NULL) {
 503                 free(nfs->server);
 504         }
 505         nfs->server        = new_server;
 506         if (nfs->export != NULL) {
 507                 free(nfs->export);
 508         }
 509         nfs->export        = new_export;
 510         data->nfs          = nfs;
 511         data->cb           = cb;
 512         data->private_data = private_data;
 513
 514         if (rpc_connect_async(nfs->rpc, server, 111, nfs_mount_1_cb, data) != 0) {
 515                 rpc_set_error(nfs->rpc, "Failed to start connection");
 516                 free_nfs_cb_data(data);
 517                 return -1;
 518         }
 519
 520         return 0;
 521 }
 522
 523
 524
 525 /*
 526  * Functions to first look up a path, component by component, and then finally call a specific function once
 527  * the filehandle for the final component is found.
 528  */
 529 static void nfs_lookup_path_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
 530 {
 531         struct nfs_cb_data *data = private_data;
 532         struct nfs_context *nfs = data->nfs;
 533         LOOKUP3res *res;
 534
 535         if (status == RPC_STATUS_ERROR) {
 536                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 537                 free_nfs_cb_data(data);
 538                 return;
 539         }
 540         if (status == RPC_STATUS_CANCEL) {
 541                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 542                 free_nfs_cb_data(data);
 543                 return;
 544         }
 545
 546         res = command_data;
 547         if (res->status != NFS3_OK) {
 548                 rpc_set_error(nfs->rpc, "NFS: Lookup of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
 549                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
 550                 free_nfs_cb_data(data);
 551                 return;
 552         }
 553
 554         if (nfs_lookup_path_async_internal(nfs, data, &res->LOOKUP3res_u.resok.object) != 0) {
 555                 rpc_set_error(nfs->rpc, "Failed to create lookup pdu");
 556                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 557                 free_nfs_cb_data(data);
 558                 return;
 559         }
 560 }
 561
 562 static int nfs_lookup_path_async_internal(struct nfs_context *nfs, struct nfs_cb_data *data, struct nfs_fh3 *fh)
 563 {
 564         char *path, *str;
 565
 566         while (*data->path == '/') {
 567               data->path++;
 568         }
 569
 570         path = data->path;
 571         str = strchr(path, '/');
 572         if (str != NULL) {
 573                 *str = 0;
 574                 data->path = str+1;
 575         } else {
 576                 while (*data->path != 0) {
 577                       data->path++;
 578                 }
 579         }
 580
 581         if (*path == 0) {
 582                 data->fh.data.data_len = fh->data.data_len;
 583                 data->fh.data.data_val = malloc(data->fh.data.data_len);
 584                 if (data->fh.data.data_val == NULL) {
 585                         rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh for %s", data->path);
 586                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 587                         free_nfs_cb_data(data);
 588                         return -1;
 589                 }
 590                 memcpy(data->fh.data.data_val, fh->data.data_val, data->fh.data.data_len);
 591                 data->continue_cb(nfs, data);
 592                 return 0;
 593         }
 594
 595         if (rpc_nfs_lookup_async(nfs->rpc, nfs_lookup_path_1_cb, fh, path, data) != 0) {
 596                 rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s", data->path);
 597                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 598                 free_nfs_cb_data(data);
 599                 return -1;
 600         }
 601         return 0;
 602 }
 603
 604 static int nfs_lookuppath_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data, continue_func continue_cb, void *continue_data, void (*free_continue_data)(void *), int continue_int)
 605 {
 606         struct nfs_cb_data *data;
 607
 608         if (path[0] != '/') {
 609                 rpc_set_error(nfs->rpc, "Pathname is not absulute %s", path);
 610                 return -1;
 611         }
 612
 613         data = malloc(sizeof(struct nfs_cb_data));
 614         if (data == NULL) {
 615                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
 616                 return -1;
 617         }
 618         memset(data, 0, sizeof(struct nfs_cb_data));
 619         data->nfs                = nfs;
 620         data->cb                 = cb;
 621         data->continue_cb        = continue_cb;
 622         data->continue_data      = continue_data;
 623         data->free_continue_data = free_continue_data;
 624         data->continue_int       = continue_int;
 625         data->private_data       = private_data;
 626         data->saved_path         = strdup(path);
 627         if (data->saved_path == NULL) {
 628                 rpc_set_error(nfs->rpc, "out of memory: failed to copy path string");
 629                 free_nfs_cb_data(data);
 630                 return -1;
 631         }
 632         data->path = data->saved_path;
 633
 634         if (nfs_lookup_path_async_internal(nfs, data, &nfs->rootfh) != 0) {
 635                 /* return 0 here since the callback will be invoked if there is a failure */
 636                 return 0;
 637         }
 638         return 0;
 639 }
 640
 641
 642
 643
 644
 645 /*
 646  * Async stat()
 647  */
 648 static void nfs_stat_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
 649 {
 650         GETATTR3res *res;
 651         struct nfs_cb_data *data = private_data;
 652         struct nfs_context *nfs = data->nfs;
 653         struct stat st;
 654
 655         if (status == RPC_STATUS_ERROR) {
 656                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 657                 free_nfs_cb_data(data);
 658                 return;
 659         }
 660         if (status == RPC_STATUS_CANCEL) {
 661                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 662                 free_nfs_cb_data(data);
 663                 return;
 664         }
 665
 666         res = command_data;
 667         if (res->status != NFS3_OK) {
 668                 rpc_set_error(nfs->rpc, "NFS: GETATTR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
 669                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
 670                 free_nfs_cb_data(data);
 671                 return;
 672         }
 673
 674         st.st_dev     = -1;
 675         st.st_ino     = res->GETATTR3res_u.resok.obj_attributes.fileid;
 676         st.st_mode    = res->GETATTR3res_u.resok.obj_attributes.mode;
 677         if (res->GETATTR3res_u.resok.obj_attributes.type == NF3DIR) {
 678                 st.st_mode |= S_IFDIR ;
 679         }
 680         st.st_nlink   = res->GETATTR3res_u.resok.obj_attributes.nlink;
 681         st.st_uid     = res->GETATTR3res_u.resok.obj_attributes.uid;
 682         st.st_gid     = res->GETATTR3res_u.resok.obj_attributes.gid;
 683         st.st_rdev    = 0;
 684         st.st_size    = res->GETATTR3res_u.resok.obj_attributes.size;
 685 #ifndef WIN32
 686         st.st_blksize = 4096;
 687         st.st_blocks  = res->GETATTR3res_u.resok.obj_attributes.size / 4096;
 688 #endif//WIN32
 689         st.st_atime   = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
 690         st.st_mtime   = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
 691         st.st_ctime   = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
 692
 693         data->cb(0, nfs, &st, data->private_data);
 694         free_nfs_cb_data(data);
 695 }
 696
 697 static int nfs_stat_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
 698 {
 699         if (rpc_nfs_getattr_async(nfs->rpc, nfs_stat_1_cb, &data->fh, data) != 0) {
 700                 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
 701                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 702                 free_nfs_cb_data(data);
 703                 return -1;
 704         }
 705         return 0;
 706 }
 707
 708 int nfs_stat_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
 709 {
 710         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_stat_continue_internal, NULL, NULL, 0) != 0) {
 711                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
 712                 return -1;
 713         }
 714
 715         return 0;
 716 }
 717
 718
 719
 720
 721
 722 /*
 723  * Async open()
 724  */
 725 static void nfs_open_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
 726 {
 727         ACCESS3res *res;
 728         struct nfs_cb_data *data = private_data;
 729         struct nfs_context *nfs = data->nfs;
 730         struct nfsfh *nfsfh;
 731         unsigned int nfsmode = 0;
 732
 733         if (status == RPC_STATUS_ERROR) {
 734                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 735                 free_nfs_cb_data(data);
 736                 return;
 737         }
 738         if (status == RPC_STATUS_CANCEL) {
 739                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 740                 free_nfs_cb_data(data);
 741                 return;
 742         }
 743
 744         res = command_data;
 745         if (res->status != NFS3_OK) {
 746                 rpc_set_error(nfs->rpc, "NFS: ACCESS of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
 747                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
 748                 free_nfs_cb_data(data);
 749                 return;
 750         }
 751
 752         if (data->continue_int & O_WRONLY) {
 753                 nfsmode |= ACCESS3_MODIFY;
 754         }
 755         if (data->continue_int & O_RDWR) {
 756                 nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
 757         }
 758         if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
 759                 nfsmode |= ACCESS3_READ;
 760         }
 761
 762
 763         if (res->ACCESS3res_u.resok.access != nfsmode) {
 764                 rpc_set_error(nfs->rpc, "NFS: ACCESS denied. Required access %c%c%c. Allowed access %c%c%c",
 765                                         nfsmode&ACCESS3_READ?'r':'-',
 766                                         nfsmode&ACCESS3_MODIFY?'w':'-',
 767                                         nfsmode&ACCESS3_EXECUTE?'x':'-',
 768                                         res->ACCESS3res_u.resok.access&ACCESS3_READ?'r':'-',
 769                                         res->ACCESS3res_u.resok.access&ACCESS3_MODIFY?'w':'-',
 770                                         res->ACCESS3res_u.resok.access&ACCESS3_EXECUTE?'x':'-');
 771                 data->cb(-EACCES, nfs, rpc_get_error(nfs->rpc), data->private_data);
 772                 free_nfs_cb_data(data);
 773                 return;
 774         }
 775
 776         nfsfh = malloc(sizeof(struct nfsfh));
 777         if (nfsfh == NULL) {
 778                 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
 779                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 780                 free_nfs_cb_data(data);
 781                 return;
 782         }
 783         memset(nfsfh, 0, sizeof(struct nfsfh));
 784
 785         if (data->continue_int & O_SYNC) {
 786                 nfsfh->is_sync = 1;
 787         }
 788
 789         /* steal the filehandle */
 790         nfsfh->fh.data.data_len = data->fh.data.data_len;
 791         nfsfh->fh.data.data_val = data->fh.data.data_val;
 792         data->fh.data.data_val = NULL;
 793
 794         data->cb(0, nfs, nfsfh, data->private_data);
 795         free_nfs_cb_data(data);
 796 }
 797
 798 static int nfs_open_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
 799 {
 800         int nfsmode = 0;
 801
 802         if (data->continue_int & O_WRONLY) {
 803                 nfsmode |= ACCESS3_MODIFY;
 804         }
 805         if (data->continue_int & O_RDWR) {
 806                 nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
 807         }
 808         if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
 809                 nfsmode |= ACCESS3_READ;
 810         }
 811
 812         if (rpc_nfs_access_async(nfs->rpc, nfs_open_cb, &data->fh, nfsmode, data) != 0) {
 813                 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
 814                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 815                 free_nfs_cb_data(data);
 816                 return -1;
 817         }
 818         return 0;
 819 }
 820
 821 int nfs_open_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
 822 {
 823         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_open_continue_internal, NULL, NULL, mode) != 0) {
 824                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
 825                 return -1;
 826         }
 827
 828         return 0;
 829 }
 830
 831
 832
 833
 834
 835 /*
 836  * Async pread()
 837  */
 838 static void nfs_pread_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
 839 {
 840         struct nfs_cb_data *data = private_data;
 841         struct nfs_context *nfs = data->nfs;
 842         READ3res *res;
 843
 844         if (status == RPC_STATUS_ERROR) {
 845                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 846                 free_nfs_cb_data(data);
 847                 return;
 848         }
 849         if (status == RPC_STATUS_CANCEL) {
 850                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 851                 free_nfs_cb_data(data);
 852                 return;
 853         }
 854
 855         res = command_data;
 856         if (res->status != NFS3_OK) {
 857                 rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
 858                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
 859                 free_nfs_cb_data(data);
 860                 return;
 861         }
 862
 863         data->nfsfh->offset += res->READ3res_u.resok.count;
 864         data->cb(res->READ3res_u.resok.count, nfs, res->READ3res_u.resok.data.data_val, data->private_data);
 865         free_nfs_cb_data(data);
 866 }
 867
 868 static void nfs_pread_mcb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
 869 {
 870         struct nfs_mcb_data *mdata = private_data;
 871         struct nfs_cb_data *data = mdata->data;
 872         struct nfs_context *nfs = data->nfs;
 873         READ3res *res;
 874
 875         data->num_calls--;
 876
 877         if (status == RPC_STATUS_ERROR) {
 878                 /* flag the failure but do not invoke callback until we have received all responses */
 879                 data->error = 1;
 880         }
 881         if (status == RPC_STATUS_CANCEL) {
 882                 /* flag the cancellation but do not invoke callback until we have received all responses */
 883                 data->cancel = 1;
 884         }
 885
 886         /* reassemble the data into the buffer */
 887         if (status == RPC_STATUS_SUCCESS) {
 888                 res = command_data;
 889                 if (res->status != NFS3_OK) {
 890                         rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
 891                         data->error = 1;
 892                 } else  {
 893                         if (res->READ3res_u.resok.count > 0) {
 894                                 memcpy(&data->buffer[mdata->offset - data->start_offset], res->READ3res_u.resok.data.data_val, res->READ3res_u.resok.count);
 895                                 if ((unsigned)data->max_offset < mdata->offset + res->READ3res_u.resok.count) {
 896                                         data->max_offset = mdata->offset + res->READ3res_u.resok.count;
 897                                 }
 898                         }
 899                 }
 900         }
 901
 902         if (data->num_calls > 0) {
 903                 /* still waiting for more replies */
 904                 free(mdata);
 905                 return;
 906         }
 907
 908         if (data->error != 0) {
 909                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 910                 free_nfs_cb_data(data);
 911                 free(mdata);
 912                 return;
 913         }
 914         if (data->cancel != 0) {
 915                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 916                 free_nfs_cb_data(data);
 917                 free(mdata);
 918                 return;
 919         }
 920
 921         data->nfsfh->offset = data->max_offset;
 922         data->cb(data->max_offset - data->start_offset, nfs, data->buffer, data->private_data);
 923
 924         free_nfs_cb_data(data);
 925         free(mdata);
 926 }
 927
 928 int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, nfs_cb cb, void *private_data)
 929 {
 930         struct nfs_cb_data *data;
 931
 932         data = malloc(sizeof(struct nfs_cb_data));
 933         if (data == NULL) {
 934                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
 935                 return -1;
 936         }
 937         memset(data, 0, sizeof(struct nfs_cb_data));
 938         data->nfs          = nfs;
 939         data->cb           = cb;
 940         data->private_data = private_data;
 941         data->nfsfh        = nfsfh;
 942
 943         nfsfh->offset = offset;
 944
 945         if (count <= nfs_get_readmax(nfs)) {
 946                 if (rpc_nfs_read_async(nfs->rpc, nfs_pread_cb, &nfsfh->fh, offset, count, data) != 0) {
 947                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
 948                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 949                         free_nfs_cb_data(data);
 950                         return -1;
 951                 }
 952                 return 0;
 953         }
 954
 955         /* trying to read more than maximum server read size, we has to chop it up into smaller
 956          * reads and collect into a reassembly buffer.
 957          * we send all reads in parallell so that performance is still good.
 958          */
 959         data->max_offset = offset;
 960         data->start_offset = offset;
 961
 962         data->buffer =  malloc(count);
 963         if (data->buffer == NULL) {
 964                 rpc_set_error(nfs->rpc, "Out-Of-Memory: Failed to allocate reassembly buffer for %d bytes", (int)count);
 965                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 966                 free_nfs_cb_data(data);
 967                 return -1;
 968         }
 969
 970         while (count > 0) {
 971                 size_t readcount = count;
 972                 struct nfs_mcb_data *mdata;
 973
 974                 if (readcount > nfs_get_readmax(nfs)) {
 975                         readcount = nfs_get_readmax(nfs);
 976                 }
 977
 978                 mdata = malloc(sizeof(struct nfs_mcb_data));
 979                 if (mdata == NULL) {
 980                         rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
 981                         return -1;
 982                 }
 983                 memset(mdata, 0, sizeof(struct nfs_mcb_data));
 984                 mdata->data   = data;
 985                 mdata->offset = offset;
 986                 mdata->count  = readcount;
 987                 if (rpc_nfs_read_async(nfs->rpc, nfs_pread_mcb, &nfsfh->fh, offset, readcount, mdata) != 0) {
 988                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
 989                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 990                         free(mdata);
 991                         return -1;
 992                 }
 993
 994                 count               -= readcount;
 995                 offset              += readcount;
 996                 data->num_calls++;
 997          }
 998
 999          return 0;
1000 }
1001
1002 /*
1003  * Async read()
1004  */
1005 int nfs_read_async(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, nfs_cb cb, void *private_data)
1006 {
1007         return nfs_pread_async(nfs, nfsfh, nfsfh->offset, count, cb, private_data);
1008 }
1009
1010
1011
1012 /*
1013  * Async pwrite()
1014  */
1015 static void nfs_pwrite_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1016 {
1017         struct nfs_cb_data *data = private_data;
1018         struct nfs_context *nfs = data->nfs;
1019         WRITE3res *res;
1020
1021         if (status == RPC_STATUS_ERROR) {
1022                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1023                 free_nfs_cb_data(data);
1024                 return;
1025         }
1026         if (status == RPC_STATUS_CANCEL) {
1027                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1028                 free_nfs_cb_data(data);
1029                 return;
1030         }
1031
1032         res = command_data;
1033         if (res->status != NFS3_OK) {
1034                 rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1035                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1036                 free_nfs_cb_data(data);
1037                 return;
1038         }
1039
1040         data->nfsfh->offset += res->WRITE3res_u.resok.count;
1041         data->cb(res->WRITE3res_u.resok.count, nfs, NULL, data->private_data);
1042         free_nfs_cb_data(data);
1043 }
1044
1045 static void nfs_pwrite_mcb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1046 {
1047         struct nfs_mcb_data *mdata = private_data;
1048         struct nfs_cb_data *data = mdata->data;
1049         struct nfs_context *nfs = data->nfs;
1050         WRITE3res *res;
1051
1052         data->num_calls--;
1053
1054         if (status == RPC_STATUS_ERROR) {
1055                 /* flag the failure but do not invoke callback until we have received all responses */
1056                 data->error = 1;
1057         }
1058         if (status == RPC_STATUS_CANCEL) {
1059                 /* flag the cancellation but do not invoke callback until we have received all responses */
1060                 data->cancel = 1;
1061         }
1062
1063         if (status == RPC_STATUS_SUCCESS) {
1064                 res = command_data;
1065                 if (res->status != NFS3_OK) {
1066                         rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1067                         data->error = 1;
1068                 } else  {
1069                         if (res->WRITE3res_u.resok.count > 0) {
1070                                 if ((unsigned)data->max_offset < mdata->offset + res->WRITE3res_u.resok.count) {
1071                                         data->max_offset = mdata->offset + res->WRITE3res_u.resok.count;
1072                                 }
1073                         }
1074                 }
1075         }
1076
1077         if (data->num_calls > 0) {
1078                 /* still waiting for more replies */
1079                 free(mdata);
1080                 return;
1081         }
1082
1083         if (data->error != 0) {
1084                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1085                 free_nfs_cb_data(data);
1086                 free(mdata);
1087                 return;
1088         }
1089         if (data->cancel != 0) {
1090                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1091                 free_nfs_cb_data(data);
1092                 free(mdata);
1093                 return;
1094         }
1095
1096         data->nfsfh->offset = data->max_offset;
1097         data->cb(data->max_offset - data->start_offset, nfs, NULL, data->private_data);
1098
1099         free_nfs_cb_data(data);
1100         free(mdata);
1101 }
1102
1103
1104 int nfs_pwrite_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, char *buf, nfs_cb cb, void *private_data)
1105 {
1106         struct nfs_cb_data *data;
1107
1108         data = malloc(sizeof(struct nfs_cb_data));
1109         if (data == NULL) {
1110                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1111                 return -1;
1112         }
1113         memset(data, 0, sizeof(struct nfs_cb_data));
1114         data->nfs          = nfs;
1115         data->cb           = cb;
1116         data->private_data = private_data;
1117         data->nfsfh        = nfsfh;
1118
1119         nfsfh->offset = offset;
1120
1121         if (count <= nfs_get_writemax(nfs)) {
1122                 if (rpc_nfs_write_async(nfs->rpc, nfs_pwrite_cb, &nfsfh->fh, buf, offset, count, nfsfh->is_sync?FILE_SYNC:UNSTABLE, data) != 0) {
1123                         rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
1124                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1125                         free_nfs_cb_data(data);
1126                         return -1;
1127                 }
1128                 return 0;
1129         }
1130
1131         /* trying to write more than maximum server write size, we has to chop it up into smaller
1132          * chunks.
1133          * we send all writes in parallell so that performance is still good.
1134          */
1135         data->max_offset = offset;
1136         data->start_offset = offset;
1137
1138         while (count > 0) {
1139                 size_t writecount = count;
1140                 struct nfs_mcb_data *mdata;
1141
1142                 if (writecount > nfs_get_writemax(nfs)) {
1143                         writecount = nfs_get_writemax(nfs);
1144                 }
1145
1146                 mdata = malloc(sizeof(struct nfs_mcb_data));
1147                 if (mdata == NULL) {
1148                         rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
1149                         return -1;
1150                 }
1151                 memset(mdata, 0, sizeof(struct nfs_mcb_data));
1152                 mdata->data   = data;
1153                 mdata->offset = offset;
1154                 mdata->count  = writecount;
1155
1156                 if (rpc_nfs_write_async(nfs->rpc, nfs_pwrite_mcb, &nfsfh->fh, &buf[offset - data->start_offset], offset, writecount, nfsfh->is_sync?FILE_SYNC:UNSTABLE, mdata) != 0) {
1157                         rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
1158                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1159                         free(mdata);
1160                         return -1;
1161                 }
1162
1163                 count               -= writecount;
1164                 offset              += writecount;
1165                 data->num_calls++;
1166         }
1167
1168         return 0;
1169 }
1170
1171 /*
1172  * Async write()
1173  */
1174 int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, char *buf, nfs_cb cb, void *private_data)
1175 {
1176         return nfs_pwrite_async(nfs, nfsfh, nfsfh->offset, count, buf, cb, private_data);
1177 }
1178
1179
1180
1181
1182 /*
1183  * close
1184  */
1185
1186 int nfs_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
1187 {
1188         if (nfsfh->fh.data.data_val != NULL){
1189                 free(nfsfh->fh.data.data_val);
1190                 nfsfh->fh.data.data_val = NULL;
1191         }
1192         free(nfsfh);
1193
1194         cb(0, nfs, NULL, private_data);
1195         return 0;
1196 };
1197
1198
1199
1200
1201
1202 /*
1203  * Async fstat()
1204  */
1205 int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
1206 {
1207         struct nfs_cb_data *data;
1208
1209         data = malloc(sizeof(struct nfs_cb_data));
1210         if (data == NULL) {
1211                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1212                 return -1;
1213         }
1214         memset(data, 0, sizeof(struct nfs_cb_data));
1215         data->nfs          = nfs;
1216         data->cb           = cb;
1217         data->private_data = private_data;
1218
1219         if (rpc_nfs_getattr_async(nfs->rpc, nfs_stat_1_cb, &nfsfh->fh, data) != 0) {
1220                 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
1221                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1222                 free_nfs_cb_data(data);
1223                 return -1;
1224         }
1225         return 0;
1226 }
1227
1228
1229
1230 /*
1231  * Async fsync()
1232  */
1233 static void nfs_fsync_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1234 {
1235         struct nfs_cb_data *data = private_data;
1236         struct nfs_context *nfs = data->nfs;
1237         COMMIT3res *res;
1238
1239         if (status == RPC_STATUS_ERROR) {
1240                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1241                 free_nfs_cb_data(data);
1242                 return;
1243         }
1244         if (status == RPC_STATUS_CANCEL) {
1245                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1246                 free_nfs_cb_data(data);
1247                 return;
1248         }
1249
1250         res = command_data;
1251         if (res->status != NFS3_OK) {
1252                 rpc_set_error(nfs->rpc, "NFS: Commit failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1253                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1254                 free_nfs_cb_data(data);
1255                 return;
1256         }
1257
1258         data->cb(0, nfs, NULL, data->private_data);
1259         free_nfs_cb_data(data);
1260 }
1261
1262 int nfs_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
1263 {
1264         struct nfs_cb_data *data;
1265
1266         data = malloc(sizeof(struct nfs_cb_data));
1267         if (data == NULL) {
1268                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1269                 return -1;
1270         }
1271         memset(data, 0, sizeof(struct nfs_cb_data));
1272         data->nfs          = nfs;
1273         data->cb           = cb;
1274         data->private_data = private_data;
1275
1276         if (rpc_nfs_commit_async(nfs->rpc, nfs_fsync_cb, &nfsfh->fh, data) != 0) {
1277                 rpc_set_error(nfs->rpc, "RPC error: Failed to send COMMIT call for %s", data->path);
1278                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1279                 free_nfs_cb_data(data);
1280                 return -1;
1281         }
1282         return 0;
1283 }
1284
1285
1286
1287
1288 /*
1289  * Async ftruncate()
1290  */
1291 static void nfs_ftruncate_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1292 {
1293         struct nfs_cb_data *data = private_data;
1294         struct nfs_context *nfs = data->nfs;
1295         SETATTR3res *res;
1296
1297         if (status == RPC_STATUS_ERROR) {
1298                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1299                 free_nfs_cb_data(data);
1300                 return;
1301         }
1302         if (status == RPC_STATUS_CANCEL) {
1303                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1304                 free_nfs_cb_data(data);
1305                 return;
1306         }
1307
1308         res = command_data;
1309         if (res->status != NFS3_OK) {
1310                 rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1311                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1312                 free_nfs_cb_data(data);
1313                 return;
1314         }
1315
1316         data->cb(0, nfs, NULL, data->private_data);
1317         free_nfs_cb_data(data);
1318 }
1319
1320 int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t length, nfs_cb cb, void *private_data)
1321 {
1322         struct nfs_cb_data *data;
1323         SETATTR3args args;
1324
1325         data = malloc(sizeof(struct nfs_cb_data));
1326         if (data == NULL) {
1327                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1328                 return -1;
1329         }
1330         memset(data, 0, sizeof(struct nfs_cb_data));
1331         data->nfs          = nfs;
1332         data->cb           = cb;
1333         data->private_data = private_data;
1334
1335         memset(&args, 0, sizeof(SETATTR3args));
1336         args.object.data.data_len = nfsfh->fh.data.data_len;
1337         args.object.data.data_val = nfsfh->fh.data.data_val;
1338         args.new_attributes.size.set_it = 1;
1339         args.new_attributes.size.set_size3_u.size = length;
1340
1341         if (rpc_nfs_setattr_async(nfs->rpc, nfs_ftruncate_cb, &args, data) != 0) {
1342                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
1343                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1344                 free_nfs_cb_data(data);
1345                 return -1;
1346         }
1347         return 0;
1348 }
1349
1350
1351 /*
1352  * Async truncate()
1353  */
1354 static int nfs_truncate_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1355 {
1356         off_t offset = data->continue_int;
1357         struct nfsfh nfsfh;
1358
1359         nfsfh.fh.data.data_val = data->fh.data.data_val;
1360         nfsfh.fh.data.data_len = data->fh.data.data_len;
1361
1362         if (nfs_ftruncate_async(nfs, &nfsfh, offset, data->cb, data->private_data) != 0) {
1363                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
1364                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1365                 free_nfs_cb_data(data);
1366                 return -1;
1367         }
1368         free_nfs_cb_data(data);
1369         return 0;
1370 }
1371
1372 int nfs_truncate_async(struct nfs_context *nfs, const char *path, off_t length, nfs_cb cb, void *private_data)
1373 {
1374         off_t offset;
1375
1376         offset = length;
1377
1378         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_truncate_continue_internal, NULL, NULL, offset) != 0) {
1379                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1380                 return -1;
1381         }
1382
1383         return 0;
1384 }
1385
1386
1387
1388
1389 /*
1390  * Async mkdir()
1391  */
1392 static void nfs_mkdir_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1393 {
1394         MKDIR3res *res;
1395         struct nfs_cb_data *data = private_data;
1396         struct nfs_context *nfs = data->nfs;
1397         char *str = data->continue_data;
1398
1399         str = &str[strlen(str) + 1];
1400
1401         if (status == RPC_STATUS_ERROR) {
1402                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1403                 free_nfs_cb_data(data);
1404                 return;
1405         }
1406         if (status == RPC_STATUS_CANCEL) {
1407                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1408                 free_nfs_cb_data(data);
1409                 return;
1410         }
1411
1412         res = command_data;
1413         if (res->status != NFS3_OK) {
1414                 rpc_set_error(nfs->rpc, "NFS: MKDIR of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1415                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1416                 free_nfs_cb_data(data);
1417                 return;
1418         }
1419
1420         data->cb(0, nfs, NULL, data->private_data);
1421         free_nfs_cb_data(data);
1422 }
1423
1424 static int nfs_mkdir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1425 {
1426         char *str = data->continue_data;
1427
1428         str = &str[strlen(str) + 1];
1429
1430         if (rpc_nfs_mkdir_async(nfs->rpc, nfs_mkdir_cb, &data->fh, str, data) != 0) {
1431                 rpc_set_error(nfs->rpc, "RPC error: Failed to send MKDIR call for %s", data->path);
1432                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1433                 free_nfs_cb_data(data);
1434                 return -1;
1435         }
1436         return 0;
1437 }
1438
1439 int nfs_mkdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1440 {
1441         char *new_path;
1442         char *ptr;
1443
1444         new_path = strdup(path);
1445         if (new_path == NULL) {
1446                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
1447                 return -1;
1448         }
1449
1450         ptr = strrchr(new_path, '/');
1451         if (ptr == NULL) {
1452                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
1453                 return -1;
1454         }
1455         *ptr = 0;
1456
1457         /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
1458         if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_mkdir_continue_internal, new_path, free, 0) != 0) {
1459                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path component");
1460                 return -1;
1461         }
1462
1463         return 0;
1464 }
1465
1466
1467
1468
1469
1470 /*
1471  * Async rmdir()
1472  */
1473 static void nfs_rmdir_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1474 {
1475         RMDIR3res *res;
1476         struct nfs_cb_data *data = private_data;
1477         struct nfs_context *nfs = data->nfs;
1478         char *str = data->continue_data;
1479
1480         str = &str[strlen(str) + 1];
1481
1482         if (status == RPC_STATUS_ERROR) {
1483                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1484                 free_nfs_cb_data(data);
1485                 return;
1486         }
1487         if (status == RPC_STATUS_CANCEL) {
1488                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1489                 free_nfs_cb_data(data);
1490                 return;
1491         }
1492
1493         res = command_data;
1494         if (res->status != NFS3_OK) {
1495                 rpc_set_error(nfs->rpc, "NFS: RMDIR of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1496                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1497                 free_nfs_cb_data(data);
1498                 return;
1499         }
1500
1501         data->cb(0, nfs, NULL, data->private_data);
1502         free_nfs_cb_data(data);
1503 }
1504
1505 static int nfs_rmdir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1506 {
1507         char *str = data->continue_data;
1508
1509         str = &str[strlen(str) + 1];
1510
1511         if (rpc_nfs_rmdir_async(nfs->rpc, nfs_rmdir_cb, &data->fh, str, data) != 0) {
1512                 rpc_set_error(nfs->rpc, "RPC error: Failed to send RMDIR call for %s", data->path);
1513                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1514                 free_nfs_cb_data(data);
1515                 return -1;
1516         }
1517         return 0;
1518 }
1519
1520 int nfs_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1521 {
1522         char *new_path;
1523         char *ptr;
1524
1525         new_path = strdup(path);
1526         if (new_path == NULL) {
1527                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
1528                 return -1;
1529         }
1530
1531         ptr = strrchr(new_path, '/');
1532         if (ptr == NULL) {
1533                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
1534                 return -1;
1535         }
1536         *ptr = 0;
1537
1538         /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
1539         if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_rmdir_continue_internal, new_path, free, 0) != 0) {
1540                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1541                 return -1;
1542         }
1543
1544         return 0;
1545 }
1546
1547
1548
1549
1550 /*
1551  * Async creat()
1552  */
1553 static void nfs_create_2_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1554 {
1555         LOOKUP3res *res;
1556         struct nfs_cb_data *data = private_data;
1557         struct nfs_context *nfs = data->nfs;
1558         struct nfsfh *nfsfh;
1559         char *str = data->continue_data;
1560
1561         if (status == RPC_STATUS_ERROR) {
1562                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1563                 free_nfs_cb_data(data);
1564                 return;
1565         }
1566         if (status == RPC_STATUS_CANCEL) {
1567                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1568                 free_nfs_cb_data(data);
1569                 return;
1570         }
1571
1572         str = &str[strlen(str) + 1];
1573         res = command_data;
1574         if (res->status != NFS3_OK) {
1575                 rpc_set_error(nfs->rpc, "NFS: CREATE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1576                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1577
1578                 return;
1579         }
1580
1581         nfsfh = malloc(sizeof(struct nfsfh));
1582         if (nfsfh == NULL) {
1583                 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
1584                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1585                 free_nfs_cb_data(data);
1586                 return;
1587         }
1588         memset(nfsfh, 0, sizeof(struct nfsfh));
1589
1590         /* steal the filehandle */
1591         nfsfh->fh.data.data_len = data->fh.data.data_len;
1592         nfsfh->fh.data.data_val = data->fh.data.data_val;
1593         data->fh.data.data_val = NULL;
1594
1595         data->cb(0, nfs, nfsfh, data->private_data);
1596         free_nfs_cb_data(data);
1597 }
1598
1599
1600
1601 static void nfs_creat_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1602 {
1603         CREATE3res *res;
1604         struct nfs_cb_data *data = private_data;
1605         struct nfs_context *nfs = data->nfs;
1606         char *str = data->continue_data;
1607
1608         if (status == RPC_STATUS_ERROR) {
1609                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1610                 free_nfs_cb_data(data);
1611                 return;
1612         }
1613         if (status == RPC_STATUS_CANCEL) {
1614                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1615                 free_nfs_cb_data(data);
1616                 return;
1617         }
1618
1619         str = &str[strlen(str) + 1];
1620         res = command_data;
1621         if (res->status != NFS3_OK) {
1622                 rpc_set_error(nfs->rpc, "NFS: CREATE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1623                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1624
1625                 return;
1626         }
1627
1628         if (rpc_nfs_lookup_async(nfs->rpc, nfs_create_2_cb, &data->fh, str, data) != 0) {
1629                 rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s/%s", data->saved_path, str);
1630                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1631                 free_nfs_cb_data(data);
1632                 return;
1633         }
1634         return;
1635 }
1636
1637 static int nfs_creat_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1638 {
1639         char *str = data->continue_data;
1640
1641         str = &str[strlen(str) + 1];
1642
1643         if (rpc_nfs_create_async(nfs->rpc, nfs_creat_1_cb, &data->fh, str, data->continue_int, data) != 0) {
1644                 rpc_set_error(nfs->rpc, "RPC error: Failed to send CREATE call for %s/%s", data->path, str);
1645                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1646                 free_nfs_cb_data(data);
1647                 return -1;
1648         }
1649         return 0;
1650 }
1651
1652 int nfs_creat_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
1653 {
1654         char *new_path;
1655         char *ptr;
1656
1657         new_path = strdup(path);
1658         if (new_path == NULL) {
1659                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
1660                 return -1;
1661         }
1662
1663         ptr = strrchr(new_path, '/');
1664         if (ptr == NULL) {
1665                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
1666                 return -1;
1667         }
1668         *ptr = 0;
1669
1670         /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
1671         if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_creat_continue_internal, new_path, free, mode) != 0) {
1672                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1673                 return -1;
1674         }
1675
1676         return 0;
1677 }
1678
1679
1680
1681
1682 /*
1683  * Async unlink()
1684  */
1685 static void nfs_unlink_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1686 {
1687         REMOVE3res *res;
1688         struct nfs_cb_data *data = private_data;
1689         struct nfs_context *nfs = data->nfs;
1690         char *str = data->continue_data;
1691
1692         str = &str[strlen(str) + 1];
1693
1694         if (status == RPC_STATUS_ERROR) {
1695                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1696                 free_nfs_cb_data(data);
1697                 return;
1698         }
1699         if (status == RPC_STATUS_CANCEL) {
1700                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1701                 free_nfs_cb_data(data);
1702                 return;
1703         }
1704
1705         res = command_data;
1706         if (res->status != NFS3_OK) {
1707                 rpc_set_error(nfs->rpc, "NFS: REMOVE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1708                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1709                 free_nfs_cb_data(data);
1710                 return;
1711         }
1712
1713         data->cb(0, nfs, NULL, data->private_data);
1714         free_nfs_cb_data(data);
1715 }
1716
1717 static int nfs_unlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1718 {
1719         char *str = data->continue_data;
1720
1721         str = &str[strlen(str) + 1];
1722
1723         if (rpc_nfs_remove_async(nfs->rpc, nfs_unlink_cb, &data->fh, str, data) != 0) {
1724                 rpc_set_error(nfs->rpc, "RPC error: Failed to send REMOVE call for %s", data->path);
1725                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1726                 free_nfs_cb_data(data);
1727                 return -1;
1728         }
1729         return 0;
1730 }
1731
1732 int nfs_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1733 {
1734         char *new_path;
1735         char *ptr;
1736
1737         new_path = strdup(path);
1738         if (new_path == NULL) {
1739                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
1740                 return -1;
1741         }
1742
1743         ptr = strrchr(new_path, '/');
1744         if (ptr == NULL) {
1745                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
1746                 return -1;
1747         }
1748         *ptr = 0;
1749
1750         /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
1751         if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_unlink_continue_internal, new_path, free, 0) != 0) {
1752                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1753                 return -1;
1754         }
1755
1756         return 0;
1757 }
1758
1759
1760
1761 /*
1762  * Async opendir()
1763  */
1764
1765 /* ReadDirPlus Emulation Callback data */
1766 struct rdpe_cb_data {
1767         int getattrcount;
1768         int status;
1769         struct nfs_cb_data *data;
1770 };
1771
1772 /* ReadDirPlus Emulation LOOKUP Callback data */
1773 struct rdpe_lookup_cb_data {
1774         struct rdpe_cb_data *rdpe_cb_data;
1775         struct nfsdirent *nfsdirent;
1776 };
1777
1778 /* Workaround for servers lacking READDIRPLUS, use READDIR instead and a GETATTR-loop */
1779 static void nfs_opendir3_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1780 {
1781         LOOKUP3res *res = command_data;
1782         struct rdpe_lookup_cb_data *rdpe_lookup_cb_data = private_data;
1783         struct rdpe_cb_data *rdpe_cb_data = rdpe_lookup_cb_data->rdpe_cb_data;
1784         struct nfs_cb_data *data = rdpe_cb_data->data;
1785         struct nfsdir *nfsdir = data->continue_data;
1786         struct nfs_context *nfs = data->nfs;
1787         struct nfsdirent *nfsdirent = rdpe_lookup_cb_data->nfsdirent;
1788
1789         free(rdpe_lookup_cb_data);
1790
1791         rdpe_cb_data->getattrcount--;
1792
1793         if (status == RPC_STATUS_ERROR) {
1794                 rdpe_cb_data->status = RPC_STATUS_ERROR;
1795         }
1796         if (status == RPC_STATUS_CANCEL) {
1797                 rdpe_cb_data->status = RPC_STATUS_CANCEL;
1798         }
1799         if (status == RPC_STATUS_SUCCESS && res->status != NFS3_OK) {
1800                 rdpe_cb_data->status = RPC_STATUS_ERROR;
1801         }
1802         if (status == RPC_STATUS_SUCCESS && res->status == NFS3_OK) {
1803                 if (res->LOOKUP3res_u.resok.obj_attributes.attributes_follow) {
1804                         fattr3 *attributes = &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes;
1805
1806                         nfsdirent->type = attributes->type;
1807                         nfsdirent->mode = attributes->mode;
1808                         nfsdirent->size = attributes->size;
1809
1810                         nfsdirent->atime.tv_sec  = attributes->atime.seconds;
1811                         nfsdirent->atime.tv_usec = attributes->atime.nseconds/1000;
1812                         nfsdirent->mtime.tv_sec  = attributes->mtime.seconds;
1813                         nfsdirent->mtime.tv_usec = attributes->mtime.nseconds/1000;
1814                         nfsdirent->ctime.tv_sec  = attributes->ctime.seconds;
1815                         nfsdirent->ctime.tv_usec = attributes->ctime.nseconds/1000;
1816                 }
1817         }
1818
1819         if (rdpe_cb_data->getattrcount == 0) {
1820                 if (rdpe_cb_data->status != RPC_STATUS_SUCCESS) {
1821                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1822                         nfs_free_nfsdir(nfsdir);
1823                 } else {
1824                         data->cb(0, nfs, nfsdir, data->private_data);
1825                 }
1826                 free(rdpe_cb_data);
1827
1828                 data->continue_data = NULL;
1829                 free_nfs_cb_data(data);
1830         }
1831 }
1832
1833 static void nfs_opendir2_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1834 {
1835         READDIR3res *res = command_data;
1836         struct nfs_cb_data *data = private_data;
1837         struct nfs_context *nfs = data->nfs;
1838         struct nfsdir *nfsdir = data->continue_data;
1839         struct nfsdirent *nfsdirent;
1840         struct entry3 *entry;
1841         uint64_t cookie;
1842         struct rdpe_cb_data *rdpe_cb_data;
1843
1844         if (status == RPC_STATUS_ERROR) {
1845                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1846                 nfs_free_nfsdir(nfsdir);
1847                 data->continue_data = NULL;
1848                 free_nfs_cb_data(data);
1849                 return;
1850         }
1851
1852         if (status == RPC_STATUS_CANCEL) {
1853                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1854                 nfs_free_nfsdir(nfsdir);
1855                 data->continue_data = NULL;
1856                 free_nfs_cb_data(data);
1857                 return;
1858         }
1859
1860         if (res->status != NFS3_OK) {
1861                 rpc_set_error(nfs->rpc, "NFS: READDIR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1862                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1863                 nfs_free_nfsdir(nfsdir);
1864                 data->continue_data = NULL;
1865                 free_nfs_cb_data(data);
1866                 return;
1867         }
1868
1869         entry =res->READDIR3res_u.resok.reply.entries;
1870         while (entry != NULL) {
1871                 nfsdirent = malloc(sizeof(struct nfsdirent));
1872                 if (nfsdirent == NULL) {
1873                         data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
1874                         nfs_free_nfsdir(nfsdir);
1875                         data->continue_data = NULL;
1876                         free_nfs_cb_data(data);
1877                         return;
1878                 }
1879                 memset(nfsdirent, 0, sizeof(struct nfsdirent));
1880                 nfsdirent->name = strdup(entry->name);
1881                 if (nfsdirent->name == NULL) {
1882                         data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
1883                         nfs_free_nfsdir(nfsdir);
1884                         data->continue_data = NULL;
1885                         free_nfs_cb_data(data);
1886                         return;
1887                 }
1888                 nfsdirent->inode = entry->fileid;
1889
1890                 nfsdirent->next  = nfsdir->entries;
1891                 nfsdir->entries  = nfsdirent;
1892
1893                 cookie = entry->cookie;
1894                 entry  = entry->nextentry;
1895         }
1896
1897         if (res->READDIR3res_u.resok.reply.eof == 0) {
1898                 if (rpc_nfs_readdir_async(nfs->rpc, nfs_opendir2_cb, &data->fh, cookie, res->READDIR3res_u.resok.cookieverf, 8192, data) != 0) {
1899                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
1900                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1901                         nfs_free_nfsdir(nfsdir);
1902                         data->continue_data = NULL;
1903                         free_nfs_cb_data(data);
1904                         return;
1905                 }
1906                 return;
1907         }
1908
1909         /* steal the dirhandle */
1910         nfsdir->current = nfsdir->entries;
1911
1912         rdpe_cb_data = malloc(sizeof(struct rdpe_cb_data));
1913         rdpe_cb_data->getattrcount = 0;
1914         rdpe_cb_data->status = RPC_STATUS_SUCCESS;
1915         rdpe_cb_data->data = data;
1916         for (nfsdirent = nfsdir->entries; nfsdirent; nfsdirent = nfsdirent->next) {
1917                 struct rdpe_lookup_cb_data *rdpe_lookup_cb_data;
1918
1919                 rdpe_lookup_cb_data = malloc(sizeof(struct rdpe_lookup_cb_data));
1920                 rdpe_lookup_cb_data->rdpe_cb_data = rdpe_cb_data;
1921                 rdpe_lookup_cb_data->nfsdirent = nfsdirent;
1922
1923                 if (rpc_nfs_lookup_async(nfs->rpc, nfs_opendir3_cb, &data->fh, nfsdirent->name, rdpe_lookup_cb_data) != 0) {
1924                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR LOOKUP call");
1925
1926                         /* if we have already commands in flight, we cant just stop, we have to wait for the
1927                          * commands in flight to complete
1928                          */
1929                         if (rdpe_cb_data->getattrcount > 0) {
1930                                 rdpe_cb_data->status = RPC_STATUS_ERROR;
1931                                 free(rdpe_lookup_cb_data);
1932                                 return;
1933                         }
1934
1935                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1936                         nfs_free_nfsdir(nfsdir);
1937                         data->continue_data = NULL;
1938                         free_nfs_cb_data(data);
1939                         free(rdpe_lookup_cb_data);
1940                         free(rdpe_cb_data);
1941                         return;
1942                 }
1943                 rdpe_cb_data->getattrcount++;
1944         }
1945 }
1946
1947
1948 static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
1949 {
1950         READDIRPLUS3res *res = command_data;
1951         struct nfs_cb_data *data = private_data;
1952         struct nfs_context *nfs = data->nfs;
1953         struct nfsdir *nfsdir = data->continue_data;
1954         struct entryplus3 *entry;
1955         uint64_t cookie;
1956
1957
1958         if (status == RPC_STATUS_ERROR || (status == RPC_STATUS_SUCCESS && res->status == NFS3ERR_NOTSUPP) ){
1959                 cookieverf3 cv;
1960
1961                 if (rpc_nfs_readdir_async(nfs->rpc, nfs_opendir2_cb, &data->fh, 0, (char *)&cv, 8192, data) != 0) {
1962                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
1963                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1964                         nfs_free_nfsdir(nfsdir);
1965                         data->continue_data = NULL;
1966                         free_nfs_cb_data(data);
1967                         return;
1968                 }
1969                 return;
1970         }
1971
1972         if (status == RPC_STATUS_CANCEL) {
1973                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1974                 nfs_free_nfsdir(nfsdir);
1975                 data->continue_data = NULL;
1976                 free_nfs_cb_data(data);
1977                 return;
1978         }
1979
1980         if (res->status != NFS3_OK) {
1981                 rpc_set_error(nfs->rpc, "NFS: READDIRPLUS of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1982                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1983                 nfs_free_nfsdir(nfsdir);
1984                 data->continue_data = NULL;
1985                 free_nfs_cb_data(data);
1986                 return;
1987         }
1988
1989         entry =res->READDIRPLUS3res_u.resok.reply.entries;
1990         while (entry != NULL) {
1991                 struct nfsdirent *nfsdirent;
1992
1993                 nfsdirent = malloc(sizeof(struct nfsdirent));
1994                 if (nfsdirent == NULL) {
1995                         data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
1996                         nfs_free_nfsdir(nfsdir);
1997                         data->continue_data = NULL;
1998                         free_nfs_cb_data(data);
1999                         return;
2000                 }
2001                 memset(nfsdirent, 0, sizeof(struct nfsdirent));
2002                 nfsdirent->name = strdup(entry->name);
2003                 if (nfsdirent->name == NULL) {
2004                         data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
2005                         nfs_free_nfsdir(nfsdir);
2006                         data->continue_data = NULL;
2007                         free_nfs_cb_data(data);
2008                         return;
2009                 }
2010                 nfsdirent->inode = entry->fileid;
2011                 if (entry->name_attributes.attributes_follow) {
2012                         nfsdirent->type = entry->name_attributes.post_op_attr_u.attributes.type;
2013                         nfsdirent->mode = entry->name_attributes.post_op_attr_u.attributes.mode;
2014                         nfsdirent->size = entry->name_attributes.post_op_attr_u.attributes.size;
2015
2016                         nfsdirent->atime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.atime.seconds;
2017                         nfsdirent->atime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.atime.nseconds/1000;
2018                         nfsdirent->mtime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.mtime.seconds;
2019                         nfsdirent->mtime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.mtime.nseconds/1000;
2020                         nfsdirent->ctime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.ctime.seconds;
2021                         nfsdirent->ctime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.ctime.nseconds/1000;
2022                 }
2023
2024                 nfsdirent->next  = nfsdir->entries;
2025                 nfsdir->entries  = nfsdirent;
2026
2027                 cookie = entry->cookie;
2028                 entry  = entry->nextentry;
2029         }
2030
2031         if (res->READDIRPLUS3res_u.resok.reply.eof == 0) {
2032                 if (rpc_nfs_readdirplus_async(nfs->rpc, nfs_opendir_cb, &data->fh, cookie, res->READDIRPLUS3res_u.resok.cookieverf, 8192, data) != 0) {
2033                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
2034                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2035                         nfs_free_nfsdir(nfsdir);
2036                         data->continue_data = NULL;
2037                         free_nfs_cb_data(data);
2038                         return;
2039                 }
2040                 return;
2041         }
2042
2043         /* steal the dirhandle */
2044         data->continue_data = NULL;
2045         nfsdir->current = nfsdir->entries;
2046
2047         data->cb(0, nfs, nfsdir, data->private_data);
2048         free_nfs_cb_data(data);
2049 }
2050
2051 static int nfs_opendir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2052 {
2053         cookieverf3 cv;
2054
2055         memset(cv, 0, sizeof(cookieverf3));
2056         if (rpc_nfs_readdirplus_async(nfs->rpc, nfs_opendir_cb, &data->fh, 0, (char *)&cv, 8192, data) != 0) {
2057                 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
2058                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2059                 free_nfs_cb_data(data);
2060                 return -1;
2061         }
2062         return 0;
2063 }
2064
2065 int nfs_opendir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2066 {
2067         struct nfsdir *nfsdir;
2068
2069         nfsdir = malloc(sizeof(struct nfsdir));
2070         if (nfsdir == NULL) {
2071                 rpc_set_error(nfs->rpc, "failed to allocate buffer for nfsdir");
2072                 return -1;
2073         }
2074         memset(nfsdir, 0, sizeof(struct nfsdir));
2075
2076         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_opendir_continue_internal, nfsdir, free, 0) != 0) {
2077                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2078                 return -1;
2079         }
2080
2081         return 0;
2082 }
2083
2084
2085 struct nfsdirent *nfs_readdir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir)
2086 {
2087         struct nfsdirent *nfsdirent = nfsdir->current;
2088
2089         if (nfsdir->current != NULL) {
2090                 nfsdir->current = nfsdir->current->next;
2091         }
2092         return nfsdirent;
2093 }
2094
2095
2096 void nfs_closedir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir)
2097 {
2098         nfs_free_nfsdir(nfsdir);
2099 }
2100
2101
2102
2103
2104
2105
2106
2107 /*
2108  * Async lseek()
2109  */
2110 struct lseek_cb_data {
2111        struct nfs_context *nfs;
2112        struct nfsfh *nfsfh;
2113        off_t offset;
2114        nfs_cb cb;
2115        void *private_data;
2116 };
2117
2118 static void nfs_lseek_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2119 {
2120         GETATTR3res *res;
2121         struct lseek_cb_data *data = private_data;
2122         struct nfs_context *nfs = data->nfs;
2123
2124         if (status == RPC_STATUS_ERROR) {
2125                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2126                 free(data);
2127                 return;
2128         }
2129         if (status == RPC_STATUS_CANCEL) {
2130                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2131                 free(data);
2132                 return;
2133         }
2134
2135         res = command_data;
2136         if (res->status != NFS3_OK) {
2137                 rpc_set_error(nfs->rpc, "NFS: GETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2138                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2139                 free(data);
2140                 return;
2141         }
2142
2143         data->nfsfh->offset = data->offset + res->GETATTR3res_u.resok.obj_attributes.size;
2144         data->cb(0, nfs, &data->nfsfh->offset, data->private_data);
2145         free(data);
2146 }
2147
2148 int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, int whence, nfs_cb cb, void *private_data)
2149 {
2150         struct lseek_cb_data *data;
2151
2152         if (whence == SEEK_SET) {
2153                 nfsfh->offset = offset;
2154                 cb(0, nfs, &nfsfh->offset, private_data);
2155                 return 0;
2156         }
2157         if (whence == SEEK_CUR) {
2158                 nfsfh->offset += offset;
2159                 cb(0, nfs, &nfsfh->offset, private_data);
2160                 return 0;
2161         }
2162
2163         data = malloc(sizeof(struct lseek_cb_data));
2164         if (data == NULL) {
2165                 rpc_set_error(nfs->rpc, "Out Of Memory: Failed to malloc lseek cb data");
2166                 return -1;
2167         }
2168
2169         data->nfs          = nfs;
2170         data->nfsfh        = nfsfh;
2171         data->offset       = offset;
2172         data->cb           = cb;
2173         data->private_data = private_data;
2174
2175         if (rpc_nfs_getattr_async(nfs->rpc, nfs_lseek_1_cb, &nfsfh->fh, data) != 0) {
2176                 rpc_set_error(nfs->rpc, "RPC error: Failed to send LSEEK GETATTR call");
2177                 free(data);
2178                 return -1;
2179         }
2180         return 0;
2181 }
2182
2183
2184
2185
2186 /*
2187  * Async statvfs()
2188  */
2189 static void nfs_statvfs_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2190 {
2191         FSSTAT3res *res;
2192         struct nfs_cb_data *data = private_data;
2193         struct nfs_context *nfs = data->nfs;
2194         struct statvfs svfs;
2195
2196         if (status == RPC_STATUS_ERROR) {
2197                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2198                 free_nfs_cb_data(data);
2199                 return;
2200         }
2201         if (status == RPC_STATUS_CANCEL) {
2202                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2203                 free_nfs_cb_data(data);
2204                 return;
2205         }
2206
2207         res = command_data;
2208         if (res->status != NFS3_OK) {
2209                 rpc_set_error(nfs->rpc, "NFS: FSSTAT of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2210                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2211                 free_nfs_cb_data(data);
2212                 return;
2213         }
2214
2215         svfs.f_bsize   = 4096;
2216         svfs.f_frsize  = 4096;
2217         svfs.f_blocks  = res->FSSTAT3res_u.resok.tbytes/4096;
2218         svfs.f_bfree   = res->FSSTAT3res_u.resok.fbytes/4096;
2219         svfs.f_bavail  = res->FSSTAT3res_u.resok.abytes/4096;
2220         svfs.f_files   = res->FSSTAT3res_u.resok.tfiles;
2221         svfs.f_ffree   = res->FSSTAT3res_u.resok.ffiles;
2222         svfs.f_favail  = res->FSSTAT3res_u.resok.afiles;
2223         svfs.f_fsid    = 0;
2224         svfs.f_flag    = 0;
2225         svfs.f_namemax = 256;
2226
2227         data->cb(0, nfs, &svfs, data->private_data);
2228         free_nfs_cb_data(data);
2229 }
2230
2231 static int nfs_statvfs_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2232 {
2233         if (rpc_nfs_fsstat_async(nfs->rpc, nfs_statvfs_1_cb, &data->fh, data) != 0) {
2234                 rpc_set_error(nfs->rpc, "RPC error: Failed to send FSSTAT call for %s", data->path);
2235                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2236                 free_nfs_cb_data(data);
2237                 return -1;
2238         }
2239         return 0;
2240 }
2241
2242 int nfs_statvfs_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2243 {
2244         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_statvfs_continue_internal, NULL, NULL, 0) != 0) {
2245                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2246                 return -1;
2247         }
2248
2249         return 0;
2250 }
2251
2252
2253
2254
2255 /*
2256  * Async readlink()
2257  */
2258 static void nfs_readlink_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2259 {
2260         READLINK3res *res;
2261         struct nfs_cb_data *data = private_data;
2262         struct nfs_context *nfs = data->nfs;
2263
2264         if (status == RPC_STATUS_ERROR) {
2265                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2266                 free_nfs_cb_data(data);
2267                 return;
2268         }
2269         if (status == RPC_STATUS_CANCEL) {
2270                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2271                 free_nfs_cb_data(data);
2272                 return;
2273         }
2274
2275         res = command_data;
2276         if (res->status != NFS3_OK) {
2277                 rpc_set_error(nfs->rpc, "NFS: READLINK of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2278                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2279                 free_nfs_cb_data(data);
2280                 return;
2281         }
2282
2283
2284         data->cb(0, nfs, res->READLINK3res_u.resok.data, data->private_data);
2285         free_nfs_cb_data(data);
2286 }
2287
2288 static int nfs_readlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2289 {
2290         if (rpc_nfs_readlink_async(nfs->rpc, nfs_readlink_1_cb, &data->fh, data) != 0) {
2291                 rpc_set_error(nfs->rpc, "RPC error: Failed to send READLINK call for %s", data->path);
2292                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2293                 free_nfs_cb_data(data);
2294                 return -1;
2295         }
2296         return 0;
2297 }
2298
2299 int nfs_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2300 {
2301         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_readlink_continue_internal, NULL, NULL, 0) != 0) {
2302                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2303                 return -1;
2304         }
2305
2306         return 0;
2307 }
2308
2309
2310
2311
2312 /*
2313  * Async chmod()
2314  */
2315 static void nfs_chmod_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2316 {
2317         struct nfs_cb_data *data = private_data;
2318         struct nfs_context *nfs = data->nfs;
2319         SETATTR3res *res;
2320
2321         if (status == RPC_STATUS_ERROR) {
2322                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2323                 free_nfs_cb_data(data);
2324                 return;
2325         }
2326         if (status == RPC_STATUS_CANCEL) {
2327                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2328                 free_nfs_cb_data(data);
2329                 return;
2330         }
2331
2332         res = command_data;
2333         if (res->status != NFS3_OK) {
2334                 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2335                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2336                 free_nfs_cb_data(data);
2337                 return;
2338         }
2339
2340         data->cb(0, nfs, NULL, data->private_data);
2341         free_nfs_cb_data(data);
2342 }
2343
2344 static int nfs_chmod_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2345 {
2346         SETATTR3args args;
2347
2348         memset(&args, 0, sizeof(SETATTR3args));
2349         args.object.data.data_len = data->fh.data.data_len;
2350         args.object.data.data_val = data->fh.data.data_val;
2351         args.new_attributes.mode.set_it = 1;
2352         args.new_attributes.mode.set_mode3_u.mode = data->continue_int;
2353
2354         if (rpc_nfs_setattr_async(nfs->rpc, nfs_chmod_cb, &args, data) != 0) {
2355                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
2356                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2357                 free_nfs_cb_data(data);
2358                 return -1;
2359         }
2360         return 0;
2361 }
2362
2363
2364 int nfs_chmod_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
2365 {
2366         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_chmod_continue_internal, NULL, NULL, mode) != 0) {
2367                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2368                 return -1;
2369         }
2370
2371         return 0;
2372 }
2373
2374 /*
2375  * Async fchmod()
2376  */
2377 int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs_cb cb, void *private_data)
2378 {
2379         struct nfs_cb_data *data;
2380
2381         data = malloc(sizeof(struct nfs_cb_data));
2382         if (data == NULL) {
2383                 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
2384                 return -1;
2385         }
2386         memset(data, 0, sizeof(struct nfs_cb_data));
2387         data->nfs          = nfs;
2388         data->cb           = cb;
2389         data->private_data = private_data;
2390         data->continue_int = mode;
2391         data->fh.data.data_len = nfsfh->fh.data.data_len;
2392         data->fh.data.data_val = malloc(data->fh.data.data_len);
2393         if (data->fh.data.data_val == NULL) {
2394                 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh");
2395                 free_nfs_cb_data(data);
2396                 return -1;
2397         }
2398         memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
2399
2400         if (nfs_chmod_continue_internal(nfs, data) != 0) {
2401                 free_nfs_cb_data(data);
2402                 return -1;
2403         }
2404
2405         return 0;
2406 }
2407
2408
2409
2410 /*
2411  * Async chown()
2412  */
2413 static void nfs_chown_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2414 {
2415         struct nfs_cb_data *data = private_data;
2416         struct nfs_context *nfs = data->nfs;
2417         SETATTR3res *res;
2418
2419         if (status == RPC_STATUS_ERROR) {
2420                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2421                 free_nfs_cb_data(data);
2422                 return;
2423         }
2424         if (status == RPC_STATUS_CANCEL) {
2425                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2426                 free_nfs_cb_data(data);
2427                 return;
2428         }
2429
2430         res = command_data;
2431         if (res->status != NFS3_OK) {
2432                 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2433                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2434                 free_nfs_cb_data(data);
2435                 return;
2436         }
2437
2438         data->cb(0, nfs, NULL, data->private_data);
2439         free_nfs_cb_data(data);
2440 }
2441
2442 struct nfs_chown_data {
2443        uid_t uid;
2444        gid_t gid;
2445 };
2446
2447 static int nfs_chown_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2448 {
2449         SETATTR3args args;
2450         struct nfs_chown_data *chown_data = data->continue_data;
2451
2452         memset(&args, 0, sizeof(SETATTR3args));
2453         args.object.data.data_len = data->fh.data.data_len;
2454         args.object.data.data_val = data->fh.data.data_val;
2455         if (chown_data->uid != (uid_t)-1) {
2456                 args.new_attributes.uid.set_it = 1;
2457                 args.new_attributes.uid.set_uid3_u.uid = chown_data->uid;
2458         }
2459         if (chown_data->gid != (gid_t)-1) {
2460                 args.new_attributes.gid.set_it = 1;
2461                 args.new_attributes.gid.set_gid3_u.gid = chown_data->gid;
2462         }
2463
2464         if (rpc_nfs_setattr_async(nfs->rpc, nfs_chown_cb, &args, data) != 0) {
2465                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
2466                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2467                 free_nfs_cb_data(data);
2468                 return -1;
2469         }
2470         return 0;
2471 }
2472
2473
2474 int nfs_chown_async(struct nfs_context *nfs, const char *path, int uid, int gid, nfs_cb cb, void *private_data)
2475 {
2476         struct nfs_chown_data *chown_data;
2477
2478         chown_data = malloc(sizeof(struct nfs_chown_data));
2479         if (chown_data == NULL) {
2480                 rpc_set_error(nfs->rpc, "Failed to allocate memory for chown data structure");
2481                 return -1;
2482         }
2483
2484         chown_data->uid = uid;
2485         chown_data->gid = gid;
2486
2487         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_chown_continue_internal, chown_data, free, 0) != 0) {
2488                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2489                 return -1;
2490         }
2491
2492         return 0;
2493 }
2494
2495
2496 /*
2497  * Async fchown()
2498  */
2499 int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid, nfs_cb cb, void *private_data)
2500 {
2501         struct nfs_cb_data *data;
2502         struct nfs_chown_data *chown_data;
2503
2504         chown_data = malloc(sizeof(struct nfs_chown_data));
2505         if (chown_data == NULL) {
2506                 rpc_set_error(nfs->rpc, "Failed to allocate memory for chown data structure");
2507                 return -1;
2508         }
2509
2510         chown_data->uid = uid;
2511         chown_data->gid = gid;
2512
2513
2514         data = malloc(sizeof(struct nfs_cb_data));
2515         if (data == NULL) {
2516                 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for fchown data");
2517                 return -1;
2518         }
2519         memset(data, 0, sizeof(struct nfs_cb_data));
2520         data->nfs           = nfs;
2521         data->cb            = cb;
2522         data->private_data  = private_data;
2523         data->continue_data = chown_data;
2524         data->fh.data.data_len = nfsfh->fh.data.data_len;
2525         data->fh.data.data_val = malloc(data->fh.data.data_len);
2526         if (data->fh.data.data_val == NULL) {
2527                 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh");
2528                 free_nfs_cb_data(data);
2529                 return -1;
2530         }
2531         memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
2532
2533
2534         if (nfs_chown_continue_internal(nfs, data) != 0) {
2535                 free_nfs_cb_data(data);
2536                 return -1;
2537         }
2538
2539         return 0;
2540 }
2541
2542
2543
2544
2545
2546 /*
2547  * Async utimes()
2548  */
2549 static void nfs_utimes_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2550 {
2551         struct nfs_cb_data *data = private_data;
2552         struct nfs_context *nfs = data->nfs;
2553         SETATTR3res *res;
2554
2555         if (status == RPC_STATUS_ERROR) {
2556                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2557                 free_nfs_cb_data(data);
2558                 return;
2559         }
2560         if (status == RPC_STATUS_CANCEL) {
2561                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2562                 free_nfs_cb_data(data);
2563                 return;
2564         }
2565
2566         res = command_data;
2567         if (res->status != NFS3_OK) {
2568                 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2569                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2570                 free_nfs_cb_data(data);
2571                 return;
2572         }
2573
2574         data->cb(0, nfs, NULL, data->private_data);
2575         free_nfs_cb_data(data);
2576 }
2577
2578 static int nfs_utimes_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2579 {
2580         SETATTR3args args;
2581         struct timeval *utimes_data = data->continue_data;
2582
2583         memset(&args, 0, sizeof(SETATTR3args));
2584         args.object.data.data_len = data->fh.data.data_len;
2585         args.object.data.data_val = data->fh.data.data_val;
2586         if (utimes_data != NULL) {
2587                 args.new_attributes.atime.set_it = SET_TO_CLIENT_TIME;
2588                 args.new_attributes.atime.set_atime_u.atime.seconds  = utimes_data[0].tv_sec;
2589                 args.new_attributes.atime.set_atime_u.atime.nseconds = utimes_data[0].tv_usec * 1000;
2590                 args.new_attributes.mtime.set_it = SET_TO_CLIENT_TIME;
2591                 args.new_attributes.mtime.set_mtime_u.mtime.seconds  = utimes_data[1].tv_sec;
2592                 args.new_attributes.mtime.set_mtime_u.mtime.nseconds = utimes_data[1].tv_usec * 1000;
2593         } else {
2594                 args.new_attributes.atime.set_it = SET_TO_SERVER_TIME;
2595                 args.new_attributes.mtime.set_it = SET_TO_SERVER_TIME;
2596         }
2597
2598         if (rpc_nfs_setattr_async(nfs->rpc, nfs_utimes_cb, &args, data) != 0) {
2599                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
2600                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2601                 free_nfs_cb_data(data);
2602                 return -1;
2603         }
2604         return 0;
2605 }
2606
2607
2608 int nfs_utimes_async(struct nfs_context *nfs, const char *path, struct timeval *times, nfs_cb cb, void *private_data)
2609 {
2610         struct timeval *new_times = NULL;
2611
2612         if (times != NULL) {
2613                 new_times = malloc(sizeof(struct timeval)*2);
2614                 if (new_times == NULL) {
2615                         rpc_set_error(nfs->rpc, "Failed to allocate memory for timeval structure");
2616                         return -1;
2617                 }
2618
2619                 memcpy(new_times, times, sizeof(struct timeval)*2);
2620         }
2621
2622         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_utimes_continue_internal, new_times, free, 0) != 0) {
2623                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2624                 return -1;
2625         }
2626
2627         return 0;
2628 }
2629
2630 /*
2631  * Async utime()
2632  */
2633 int nfs_utime_async(struct nfs_context *nfs, const char *path, struct utimbuf *times, nfs_cb cb, void *private_data)
2634 {
2635         struct timeval *new_times = NULL;
2636
2637         if (times != NULL) {
2638                 new_times = malloc(sizeof(struct timeval)*2);
2639                 if (new_times == NULL) {
2640                         rpc_set_error(nfs->rpc, "Failed to allocate memory for timeval structure");
2641                         return -1;
2642                 }
2643
2644                 new_times[0].tv_sec  = times->actime;
2645                 new_times[0].tv_usec = 0;
2646                 new_times[1].tv_sec  = times->modtime;
2647                 new_times[1].tv_usec = 0;
2648         }
2649
2650         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_utimes_continue_internal, new_times, free, 0) != 0) {
2651                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2652                 return -1;
2653         }
2654
2655         return 0;
2656 }
2657
2658
2659
2660
2661
2662 /*
2663  * Async access()
2664  */
2665 static void nfs_access_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2666 {
2667         ACCESS3res *res;
2668         struct nfs_cb_data *data = private_data;
2669         struct nfs_context *nfs = data->nfs;
2670         unsigned int nfsmode = 0;
2671
2672         if (status == RPC_STATUS_ERROR) {
2673                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2674                 free_nfs_cb_data(data);
2675                 return;
2676         }
2677         if (status == RPC_STATUS_CANCEL) {
2678                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2679                 free_nfs_cb_data(data);
2680                 return;
2681         }
2682
2683         res = command_data;
2684         if (res->status != NFS3_OK) {
2685                 rpc_set_error(nfs->rpc, "NFS: ACCESS of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2686                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2687                 free_nfs_cb_data(data);
2688                 return;
2689         }
2690
2691         if (data->continue_int & R_OK) {
2692                 nfsmode |= ACCESS3_READ;
2693         }
2694         if (data->continue_int & W_OK) {
2695                 nfsmode |= ACCESS3_MODIFY;
2696         }
2697         if (data->continue_int & X_OK) {
2698                 nfsmode |= ACCESS3_EXECUTE;
2699         }
2700
2701         if (res->ACCESS3res_u.resok.access != nfsmode) {
2702                 rpc_set_error(nfs->rpc, "NFS: ACCESS denied. Required access %c%c%c. Allowed access %c%c%c",
2703                                         nfsmode&ACCESS3_READ?'r':'-',
2704                                         nfsmode&ACCESS3_MODIFY?'w':'-',
2705                                         nfsmode&ACCESS3_EXECUTE?'x':'-',
2706                                         res->ACCESS3res_u.resok.access&ACCESS3_READ?'r':'-',
2707                                         res->ACCESS3res_u.resok.access&ACCESS3_MODIFY?'w':'-',
2708                                         res->ACCESS3res_u.resok.access&ACCESS3_EXECUTE?'x':'-');
2709                 data->cb(-EACCES, nfs, rpc_get_error(nfs->rpc), data->private_data);
2710                 free_nfs_cb_data(data);
2711                 return;
2712         }
2713
2714         data->cb(0, nfs, NULL, data->private_data);
2715         free_nfs_cb_data(data);
2716 }
2717
2718 static int nfs_access_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2719 {
2720         int nfsmode = 0;
2721
2722         if (data->continue_int & R_OK) {
2723                 nfsmode |= ACCESS3_READ;
2724         }
2725         if (data->continue_int & W_OK) {
2726                 nfsmode |= ACCESS3_MODIFY;
2727         }
2728         if (data->continue_int & X_OK) {
2729                 nfsmode |= ACCESS3_EXECUTE;
2730         }
2731
2732         if (rpc_nfs_access_async(nfs->rpc, nfs_access_cb, &data->fh, nfsmode, data) != 0) {
2733                 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
2734                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2735                 free_nfs_cb_data(data);
2736                 return -1;
2737         }
2738         return 0;
2739 }
2740
2741 int nfs_access_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
2742 {
2743         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_access_continue_internal, NULL, NULL, mode) != 0) {
2744                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2745                 return -1;
2746         }
2747
2748         return 0;
2749 }
2750
2751
2752
2753 /*
2754  * Async symlink()
2755  */
2756 struct nfs_symlink_data {
2757        char *oldpath;
2758        char *newpathparent;
2759        char *newpathobject;
2760 };
2761
2762 static void free_nfs_symlink_data(void *mem)
2763 {
2764         struct nfs_symlink_data *data = mem;
2765
2766         if (data->oldpath != NULL) {
2767                 free(data->oldpath);
2768         }
2769         if (data->newpathparent != NULL) {
2770                 free(data->newpathparent);
2771         }
2772         if (data->newpathobject != NULL) {
2773                 free(data->newpathobject);
2774         }
2775         free(data);
2776 }
2777
2778 static void nfs_symlink_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2779 {
2780         SYMLINK3res *res;
2781         struct nfs_cb_data *data = private_data;
2782         struct nfs_context *nfs = data->nfs;
2783         struct nfs_symlink_data *symlink_data = data->continue_data;
2784
2785         if (status == RPC_STATUS_ERROR) {
2786                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2787                 free_nfs_cb_data(data);
2788                 return;
2789         }
2790         if (status == RPC_STATUS_CANCEL) {
2791                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2792                 free_nfs_cb_data(data);
2793                 return;
2794         }
2795
2796         res = command_data;
2797         if (res->status != NFS3_OK) {
2798                 rpc_set_error(nfs->rpc, "NFS: SYMLINK %s/%s -> %s failed with %s(%d)", symlink_data->newpathparent, symlink_data->newpathobject, symlink_data->oldpath, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2799                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2800                 free_nfs_cb_data(data);
2801                 return;
2802         }
2803
2804         data->cb(0, nfs, NULL, data->private_data);
2805         free_nfs_cb_data(data);
2806 }
2807
2808 static int nfs_symlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2809 {
2810         struct nfs_symlink_data *symlink_data = data->continue_data;
2811
2812         if (rpc_nfs_symlink_async(nfs->rpc, nfs_symlink_cb, &data->fh, symlink_data->newpathobject, symlink_data->oldpath, data) != 0) {
2813                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SYMLINK call for %s", data->path);
2814                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2815                 free_nfs_cb_data(data);
2816                 return -1;
2817         }
2818         return 0;
2819 }
2820
2821 int nfs_symlink_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
2822 {
2823         char *ptr;
2824         struct nfs_symlink_data *symlink_data;
2825
2826         symlink_data = malloc(sizeof(struct nfs_symlink_data));
2827         if (symlink_data == NULL) {
2828                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for symlink data");
2829                 return -1;
2830         }
2831         memset(symlink_data, 0, sizeof(struct nfs_symlink_data));
2832
2833         symlink_data->oldpath = strdup(oldpath);
2834         if (symlink_data->oldpath == NULL) {
2835                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
2836                 free_nfs_symlink_data(symlink_data);
2837                 return -1;
2838         }
2839
2840         symlink_data->newpathparent = strdup(newpath);
2841         if (symlink_data->newpathparent == NULL) {
2842                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for new path");
2843                 free_nfs_symlink_data(symlink_data);
2844                 return -1;
2845         }
2846
2847         ptr = strrchr(symlink_data->newpathparent, '/');
2848         if (ptr == NULL) {
2849                 rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
2850                 free_nfs_symlink_data(symlink_data);
2851                 return -1;
2852         }
2853         *ptr = 0;
2854         ptr++;
2855
2856         symlink_data->newpathobject = strdup(ptr);
2857         if (symlink_data->newpathobject == NULL) {
2858                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for new path");
2859                 free_nfs_symlink_data(symlink_data);
2860                 return -1;
2861         }
2862
2863         if (nfs_lookuppath_async(nfs, symlink_data->newpathparent, cb, private_data, nfs_symlink_continue_internal, symlink_data, free_nfs_symlink_data, 0) != 0) {
2864                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2865                 return -1;
2866         }
2867
2868         return 0;
2869 }
2870
2871
2872
2873 /*
2874  * Async rename()
2875  */
2876 struct nfs_rename_data {
2877        char *oldpath;
2878        char *oldobject;
2879        struct nfs_fh3 olddir;
2880        char *newpath;
2881        char *newobject;
2882        struct nfs_fh3 newdir;
2883 };
2884
2885 static void free_nfs_rename_data(void *mem)
2886 {
2887         struct nfs_rename_data *data = mem;
2888
2889         if (data->oldpath != NULL) {
2890                 free(data->oldpath);
2891         }
2892         if (data->olddir.data.data_val != NULL) {
2893                 free(data->olddir.data.data_val);
2894         }
2895         if (data->newpath != NULL) {
2896                 free(data->newpath);
2897         }
2898         if (data->newdir.data.data_val != NULL) {
2899                 free(data->newdir.data.data_val);
2900         }
2901         free(data);
2902 }
2903
2904 static void nfs_rename_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
2905 {
2906         RENAME3res *res;
2907         struct nfs_cb_data *data = private_data;
2908         struct nfs_context *nfs = data->nfs;
2909         struct nfs_rename_data *rename_data = data->continue_data;
2910
2911         if (status == RPC_STATUS_ERROR) {
2912                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2913                 free_nfs_cb_data(data);
2914                 return;
2915         }
2916         if (status == RPC_STATUS_CANCEL) {
2917                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2918                 free_nfs_cb_data(data);
2919                 return;
2920         }
2921
2922         res = command_data;
2923         if (res->status != NFS3_OK) {
2924                 rpc_set_error(nfs->rpc, "NFS: RENAME %s/%s -> %s/%s failed with %s(%d)", rename_data->oldpath, rename_data->oldobject, rename_data->newpath, rename_data->newobject, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2925                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2926                 free_nfs_cb_data(data);
2927                 return;
2928         }
2929
2930         data->cb(0, nfs, NULL, data->private_data);
2931         free_nfs_cb_data(data);
2932 }
2933
2934 static int nfs_rename_continue_2_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2935 {
2936         struct nfs_rename_data *rename_data = data->continue_data;
2937
2938         /* steal the filehandle */
2939         rename_data->newdir.data.data_len = data->fh.data.data_len;
2940         rename_data->newdir.data.data_val = data->fh.data.data_val;
2941         data->fh.data.data_val = NULL;
2942
2943         if (rpc_nfs_rename_async(nfs->rpc, nfs_rename_cb, &rename_data->olddir, rename_data->oldobject, &rename_data->newdir, rename_data->newobject, data) != 0) {
2944                 rpc_set_error(nfs->rpc, "RPC error: Failed to send RENAME call for %s", data->path);
2945                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2946                 free_nfs_cb_data(data);
2947                 return -1;
2948         }
2949         return 0;
2950 }
2951
2952
2953 static int nfs_rename_continue_1_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2954 {
2955         struct nfs_rename_data *rename_data = data->continue_data;
2956
2957         /* steal the filehandle */
2958         rename_data->olddir.data.data_len = data->fh.data.data_len;
2959         rename_data->olddir.data.data_val = data->fh.data.data_val;
2960         data->fh.data.data_val = NULL;
2961
2962         if (nfs_lookuppath_async(nfs, rename_data->newpath, data->cb, data->private_data, nfs_rename_continue_2_internal, rename_data, free_nfs_rename_data, 0) != 0) {
2963                 rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", rename_data->newpath);
2964                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2965                 free_nfs_cb_data(data);
2966                 return -1;
2967         }
2968         data->continue_data = NULL;
2969         free_nfs_cb_data(data);
2970
2971         return 0;
2972 }
2973
2974
2975 int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
2976 {
2977         char *ptr;
2978         struct nfs_rename_data *rename_data;
2979
2980         rename_data = malloc(sizeof(struct nfs_rename_data));
2981         if (rename_data == NULL) {
2982                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for rename data");
2983                 return -1;
2984         }
2985         memset(rename_data, 0, sizeof(struct nfs_rename_data));
2986
2987         rename_data->oldpath = strdup(oldpath);
2988         if (rename_data->oldpath == NULL) {
2989                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
2990                 free_nfs_rename_data(rename_data);
2991                 return -1;
2992         }
2993         ptr = strrchr(rename_data->oldpath, '/');
2994         if (ptr == NULL) {
2995                 rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
2996                 free_nfs_rename_data(rename_data);
2997                 return -1;
2998         }
2999         *ptr = 0;
3000         ptr++;
3001         rename_data->oldobject = ptr;
3002
3003
3004         rename_data->newpath = strdup(newpath);
3005         if (rename_data->newpath == NULL) {
3006                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for newpath");
3007                 free_nfs_rename_data(rename_data);
3008                 return -1;
3009         }
3010         ptr = strrchr(rename_data->newpath, '/');
3011         if (ptr == NULL) {
3012                 rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
3013                 free_nfs_rename_data(rename_data);
3014                 return -1;
3015         }
3016         *ptr = 0;
3017         ptr++;
3018         rename_data->newobject = ptr;
3019
3020
3021         if (nfs_lookuppath_async(nfs, rename_data->oldpath, cb, private_data, nfs_rename_continue_1_internal, rename_data, free_nfs_rename_data, 0) != 0) {
3022                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3023                 return -1;
3024         }
3025
3026         return 0;
3027 }
3028
3029
3030 /*
3031  * Async link()
3032  */
3033 struct nfs_link_data {
3034        char *oldpath;
3035        struct nfs_fh3 oldfh;
3036        char *newpath;
3037        char *newobject;
3038        struct nfs_fh3 newdir;
3039 };
3040
3041 static void free_nfs_link_data(void *mem)
3042 {
3043         struct nfs_link_data *data = mem;
3044
3045         if (data->oldpath != NULL) {
3046                 free(data->oldpath);
3047         }
3048         if (data->oldfh.data.data_val != NULL) {
3049                 free(data->oldfh.data.data_val);
3050         }
3051         if (data->newpath != NULL) {
3052                 free(data->newpath);
3053         }
3054         if (data->newdir.data.data_val != NULL) {
3055                 free(data->newdir.data.data_val);
3056         }
3057         free(data);
3058 }
3059
3060 static void nfs_link_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
3061 {
3062         LINK3res *res;
3063         struct nfs_cb_data *data = private_data;
3064         struct nfs_context *nfs = data->nfs;
3065         struct nfs_link_data *link_data = data->continue_data;
3066
3067         if (status == RPC_STATUS_ERROR) {
3068                 data->cb(-EFAULT, nfs, command_data, data->private_data);
3069                 free_nfs_cb_data(data);
3070                 return;
3071         }
3072         if (status == RPC_STATUS_CANCEL) {
3073                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3074                 free_nfs_cb_data(data);
3075                 return;
3076         }
3077
3078         res = command_data;
3079         if (res->status != NFS3_OK) {
3080                 rpc_set_error(nfs->rpc, "NFS: LINK %s -> %s/%s failed with %s(%d)", link_data->oldpath, link_data->newpath, link_data->newobject, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3081                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3082                 free_nfs_cb_data(data);
3083                 return;
3084         }
3085
3086         data->cb(0, nfs, NULL, data->private_data);
3087         free_nfs_cb_data(data);
3088 }
3089
3090 static int nfs_link_continue_2_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3091 {
3092         struct nfs_link_data *link_data = data->continue_data;
3093
3094         /* steal the filehandle */
3095         link_data->newdir.data.data_len = data->fh.data.data_len;
3096         link_data->newdir.data.data_val = data->fh.data.data_val;
3097         data->fh.data.data_val = NULL;
3098
3099         if (rpc_nfs_link_async(nfs->rpc, nfs_link_cb, &link_data->oldfh, &link_data->newdir, link_data->newobject, data) != 0) {
3100                 rpc_set_error(nfs->rpc, "RPC error: Failed to send LINK call for %s", data->path);
3101                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3102                 free_nfs_cb_data(data);
3103                 return -1;
3104         }
3105         return 0;
3106 }
3107
3108
3109 static int nfs_link_continue_1_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3110 {
3111         struct nfs_link_data *link_data = data->continue_data;
3112
3113         /* steal the filehandle */
3114         link_data->oldfh.data.data_len = data->fh.data.data_len;
3115         link_data->oldfh.data.data_val = data->fh.data.data_val;
3116         data->fh.data.data_val = NULL;
3117
3118         if (nfs_lookuppath_async(nfs, link_data->newpath, data->cb, data->private_data, nfs_link_continue_2_internal, link_data, free_nfs_link_data, 0) != 0) {
3119                 rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", link_data->newpath);
3120                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3121                 free_nfs_cb_data(data);
3122                 return -1;
3123         }
3124         data->continue_data = NULL;
3125         free_nfs_cb_data(data);
3126
3127         return 0;
3128 }
3129
3130
3131 int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
3132 {
3133         char *ptr;
3134         struct nfs_link_data *link_data;
3135
3136         link_data = malloc(sizeof(struct nfs_link_data));
3137         if (link_data == NULL) {
3138                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for link data");
3139                 return -1;
3140         }
3141         memset(link_data, 0, sizeof(struct nfs_link_data));
3142
3143         link_data->oldpath = strdup(oldpath);
3144         if (link_data->oldpath == NULL) {
3145                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
3146                 free_nfs_link_data(link_data);
3147                 return -1;
3148         }
3149
3150         link_data->newpath = strdup(newpath);
3151         if (link_data->newpath == NULL) {
3152                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for newpath");
3153                 free_nfs_link_data(link_data);
3154                 return -1;
3155         }
3156         ptr = strrchr(link_data->newpath, '/');
3157         if (ptr == NULL) {
3158                 rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
3159                 free_nfs_link_data(link_data);
3160                 return -1;
3161         }
3162         *ptr = 0;
3163         ptr++;
3164         link_data->newobject = ptr;
3165
3166
3167         if (nfs_lookuppath_async(nfs, link_data->oldpath, cb, private_data, nfs_link_continue_1_internal, link_data, free_nfs_link_data, 0) != 0) {
3168                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3169                 return -1;
3170         }
3171
3172         return 0;
3173 }
3174
3175
3176 //qqq replace later with lseek()
3177 off_t nfs_get_current_offset(struct nfsfh *nfsfh)
3178 {
3179         return nfsfh->offset;
3180 }
3181
3182
3183
3184 /*
3185  * Get the maximum supported READ3 size by the server
3186  */
3187 size_t nfs_get_readmax(struct nfs_context *nfs)
3188 {
3189         return nfs->readmax;
3190 }
3191
3192 /*
3193  * Get the maximum supported WRITE3 size by the server
3194  */
3195 size_t nfs_get_writemax(struct nfs_context *nfs)
3196 {
3197         /* Some XDR libraries can not marshall PDUs bigger than this */
3198         if (nfs->writemax < 32768) {
3199                 return nfs->writemax;
3200         }
3201         return 32768;
3202 }
3203
3204 void nfs_set_error(struct nfs_context *nfs, char *error_string, ...)
3205 {
3206         va_list ap;
3207         char *str = NULL;
3208
3209         va_start(ap, error_string);
3210         str = malloc(1024);
3211         vsnprintf(str, 1024, error_string, ap);
3212         if (nfs->rpc->error_string != NULL) {
3213                 free(nfs->rpc->error_string);
3214         }
3215         nfs->rpc->error_string = str;
3216     va_end(ap);
3217 }
3218
3219
3220
3221 struct mount_cb_data {
3222        rpc_cb cb;
3223        void *private_data;
3224        char *server;
3225 };
3226
3227 static void free_mount_cb_data(struct mount_cb_data *data)
3228 {
3229         if (data->server != NULL) {
3230                 free(data->server);
3231                 data->server = NULL;
3232         }
3233
3234         free(data);
3235 }
3236
3237 static void mount_export_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3238 {
3239         struct mount_cb_data *data = private_data;
3240
3241         if (status == RPC_STATUS_ERROR) {
3242                 data->cb(rpc, -EFAULT, command_data, data->private_data);
3243                 free_mount_cb_data(data);
3244                 return;
3245         }
3246         if (status == RPC_STATUS_CANCEL) {
3247                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
3248                 free_mount_cb_data(data);
3249                 return;
3250         }
3251
3252         data->cb(rpc, 0, command_data, data->private_data);
3253         if (rpc_disconnect(rpc, "normal disconnect") != 0) {
3254                 rpc_set_error(rpc, "Failed to disconnect\n");
3255         }
3256         free_mount_cb_data(data);
3257 }
3258
3259 static void mount_export_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3260 {
3261         struct mount_cb_data *data = private_data;
3262
3263         if (status == RPC_STATUS_ERROR) {
3264                 data->cb(rpc, -EFAULT, command_data, data->private_data);
3265                 free_mount_cb_data(data);
3266                 return;
3267         }
3268         if (status == RPC_STATUS_CANCEL) {
3269                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
3270                 free_mount_cb_data(data);
3271                 return;
3272         }
3273
3274         if (rpc_mount_export_async(rpc, mount_export_5_cb, data) != 0) {
3275                 data->cb(rpc, -ENOMEM, command_data, data->private_data);
3276                 free_mount_cb_data(data);
3277                 return;
3278         }
3279 }
3280
3281 static void mount_export_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3282 {
3283         struct mount_cb_data *data = private_data;
3284         uint32_t mount_port;
3285
3286         if (status == RPC_STATUS_ERROR) {
3287                 data->cb(rpc, -EFAULT, command_data, data->private_data);
3288                 free_mount_cb_data(data);
3289                 return;
3290         }
3291         if (status == RPC_STATUS_CANCEL) {
3292                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
3293                 free_mount_cb_data(data);
3294                 return;
3295         }
3296
3297         mount_port = *(uint32_t *)command_data;
3298         if (mount_port == 0) {
3299                 rpc_set_error(rpc, "RPC error. Mount program is not available");
3300                 data->cb(rpc, -ENOENT, command_data, data->private_data);
3301                 free_mount_cb_data(data);
3302                 return;
3303         }
3304
3305         rpc_disconnect(rpc, "normal disconnect");
3306         if (rpc_connect_async(rpc, data->server, mount_port, mount_export_4_cb, data) != 0) {
3307                 data->cb(rpc, -ENOMEM, command_data, data->private_data);
3308                 free_mount_cb_data(data);
3309                 return;
3310         }
3311 }
3312
3313 static void mount_export_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3314 {
3315         struct mount_cb_data *data = private_data;
3316
3317         if (status == RPC_STATUS_ERROR) {
3318                 data->cb(rpc, -EFAULT, command_data, data->private_data);
3319                 free_mount_cb_data(data);
3320                 return;
3321         }
3322         if (status == RPC_STATUS_CANCEL) {
3323                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
3324                 free_mount_cb_data(data);
3325                 return;
3326         }
3327
3328         if (rpc_pmap_getport_async(rpc, MOUNT_PROGRAM, MOUNT_V3, mount_export_3_cb, private_data) != 0) {
3329                 data->cb(rpc, -ENOMEM, command_data, data->private_data);
3330                 free_mount_cb_data(data);
3331                 return;
3332         }
3333 }
3334
3335 static void mount_export_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3336 {
3337         struct mount_cb_data *data = private_data;
3338
3339         if (status == RPC_STATUS_ERROR) {
3340                 data->cb(rpc, -EFAULT, command_data, data->private_data);
3341                 free_mount_cb_data(data);
3342                 return;
3343         }
3344         if (status == RPC_STATUS_CANCEL) {
3345                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
3346                 free_mount_cb_data(data);
3347                 return;
3348         }
3349
3350         if (rpc_pmap_null_async(rpc, mount_export_2_cb, data) != 0) {
3351                 data->cb(rpc, -ENOMEM, command_data, data->private_data);
3352                 free_mount_cb_data(data);
3353                 return;
3354         }
3355 }
3356
3357 int mount_getexports_async(struct rpc_context *rpc, const char *server, rpc_cb cb, void *private_data)
3358 {
3359         struct mount_cb_data *data;
3360
3361         data = malloc(sizeof(struct mount_cb_data));
3362         if (data == NULL) {
3363                 return -1;
3364         }
3365         memset(data, 0, sizeof(struct mount_cb_data));
3366         data->cb           = cb;
3367         data->private_data = private_data;
3368         data->server       = strdup(server);
3369         if (data->server == NULL) {
3370                 free_mount_cb_data(data);
3371                 return -1;
3372         }
3373         if (rpc_connect_async(rpc, data->server, 111, mount_export_1_cb, data) != 0) {
3374                 free_mount_cb_data(data);
3375                 return -1;
3376         }
3377
3378         return 0;
3379 }
3380
3381 struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs)
3382 {
3383         return nfs->rpc;
3384 }
3385
3386 const char *nfs_get_server(struct nfs_context *nfs) {
3387         return nfs->server;
3388 }
3389
3390 const char *nfs_get_export(struct nfs_context *nfs) {
3391         return nfs->export;
3392 }
3393