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 HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #ifdef AROS
  25 #include "aros_compat.h"
  26 #endif
  27
  28 #ifdef WIN32
  29 #include "win32_compat.h"
  30 #endif
  31
  32 #ifdef HAVE_UTIME_H
  33 #include <utime.h>
  34 #endif
  35
  36 #ifdef ANDROID
  37 #define statvfs statfs
  38 #endif
  39
  40 #define _GNU_SOURCE
  41
  42 #ifdef HAVE_UNISTD_H
  43 #include <unistd.h>
  44 #endif
  45
  46 #ifdef HAVE_SYS_VFS_H
  47 #include <sys/vfs.h>
  48 #endif
  49
  50 #ifdef HAVE_SYS_STATVFS_H
  51 #include <sys/statvfs.h>
  52 #endif
  53
  54 #ifdef HAVE_NETINET_IN_H
  55 #include <netinet/in.h>
  56 #endif
  57
  58 #ifdef HAVE_STRINGS_H
  59 #include <strings.h>
  60 #endif
  61
  62 #include <stdio.h>
  63 #include <stdarg.h>
  64 #include <stdlib.h>
  65 #include <string.h>
  66 #include <assert.h>
  67 #include <errno.h>
  68 #include <sys/types.h>
  69 #include <sys/stat.h>
  70 #include <fcntl.h>
  71 #include "libnfs-zdr.h"
  72 #include "libnfs.h"
  73 #include "libnfs-raw.h"
  74 #include "libnfs-raw-mount.h"
  75 #include "libnfs-raw-nfs.h"
  76 #include "libnfs-private.h"
  77
  78 struct nfsdir {
  79        struct nfsdirent *entries;
  80        struct nfsdirent *current;
  81 };
  82
  83 struct nfsfh {
  84        struct nfs_fh3 fh;
  85        int is_sync;
  86        uint64_t offset;
  87 };
  88
  89 struct nfs_context {
  90        struct rpc_context *rpc;
  91        char *server;
  92        char *export;
  93        struct nfs_fh3 rootfh;
  94        uint64_t readmax;
  95        uint64_t writemax;
  96 };
  97
  98 void nfs_free_nfsdir(struct nfsdir *nfsdir)
  99 {
 100         while (nfsdir->entries) {
 101                 struct nfsdirent *dirent = nfsdir->entries->next;
 102                 if (nfsdir->entries->name != NULL) {
 103                         free(nfsdir->entries->name);
 104                 }
 105                 free(nfsdir->entries);
 106                 nfsdir->entries = dirent;
 107         }
 108         free(nfsdir);
 109 }
 110
 111 struct nfs_cb_data;
 112 typedef int (*continue_func)(struct nfs_context *nfs, struct nfs_cb_data *data);
 113
 114 struct nfs_cb_data {
 115        struct nfs_context *nfs;
 116        struct nfsfh *nfsfh;
 117        char *saved_path, *path;
 118
 119        nfs_cb cb;
 120        void *private_data;
 121
 122        continue_func continue_cb;
 123        void *continue_data;
 124        void (*free_continue_data)(void *);
 125        int continue_int;
 126
 127        struct nfs_fh3 fh;
 128
 129        /* for multi-read/write calls. */
 130        int error;
 131        int cancel;
 132        int num_calls;
 133        uint64_t start_offset, max_offset;
 134        char *buffer;
 135 };
 136
 137 struct nfs_mcb_data {
 138        struct nfs_cb_data *data;
 139        uint64_t offset;
 140        uint64_t count;
 141 };
 142
 143 static int nfs_lookup_path_async_internal(struct nfs_context *nfs, struct nfs_cb_data *data, struct nfs_fh3 *fh);
 144
 145
 146 void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth)
 147 {
 148         rpc_set_auth(nfs->rpc, auth);
 149 }
 150
 151 int nfs_get_fd(struct nfs_context *nfs)
 152 {
 153         return rpc_get_fd(nfs->rpc);
 154 }
 155
 156 int nfs_queue_length(struct nfs_context *nfs)
 157 {
 158         return rpc_queue_length(nfs->rpc);
 159 }
 160
 161 int nfs_which_events(struct nfs_context *nfs)
 162 {
 163         return rpc_which_events(nfs->rpc);
 164 }
 165
 166 int nfs_service(struct nfs_context *nfs, int revents)
 167 {
 168         return rpc_service(nfs->rpc, revents);
 169 }
 170
 171 char *nfs_get_error(struct nfs_context *nfs)
 172 {
 173         return rpc_get_error(nfs->rpc);
 174 };
 175
 176 static int nfs_set_context_args(struct nfs_context *nfs, char *arg, char *val)
 177 {
 178         if (!strncmp(arg, "tcp-syncnt", 10)) {
 179                 rpc_set_tcp_syncnt(nfs_get_rpc_context(nfs), atoi(val));
 180         } else if (!strncmp(arg, "uid", 3)) {
 181                 rpc_set_uid(nfs_get_rpc_context(nfs), atoi(val));
 182         } else if (!strncmp(arg, "gid", 3)) {
 183                 rpc_set_gid(nfs_get_rpc_context(nfs), atoi(val));
 184         }
 185         return 0;
 186 }
 187
 188 static struct nfs_url *nfs_parse_url(struct nfs_context *nfs, const char *url, int dir, int incomplete)
 189 {
 190         struct nfs_url *urls;
 191         char *strp, *flagsp, *strp2;
 192
 193         if (strncmp(url, "nfs://", 6)) {
 194                 rpc_set_error(nfs->rpc, "Invalid URL specified");
 195                 return NULL;
 196         }
 197
 198         urls = malloc(sizeof(struct nfs_url));
 199         if (urls == NULL) {
 200                 rpc_set_error(nfs->rpc, "Out of memory");
 201                 return NULL;
 202         }
 203
 204         memset(urls, 0x00, sizeof(struct nfs_url));
 205         urls->server = strdup(url + 6);
 206         if (urls->server == NULL) {
 207                 nfs_destroy_url(urls);
 208                 rpc_set_error(nfs->rpc, "Out of memory");
 209                 return NULL;
 210         }
 211
 212         if (urls->server[0] == '/' || urls->server[0] == '\0' ||
 213                 urls->server[0] == '?') {
 214                 if (incomplete) {
 215                         flagsp = strchr(urls->server, '?');
 216                         goto flags;
 217                 }
 218                 nfs_destroy_url(urls);
 219                 rpc_set_error(nfs->rpc, "Invalid server string");
 220                 return NULL;
 221         }
 222
 223         strp = strchr(urls->server, '/');
 224         if (strp == NULL) {
 225                 if (incomplete) {
 226                         flagsp = strchr(urls->server, '?');
 227                         goto flags;
 228                 }
 229                 nfs_destroy_url(urls);
 230                 rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
 231                 return NULL;
 232         }
 233
 234         urls->path = strdup(strp);
 235         if (urls->path == NULL) {
 236                 nfs_destroy_url(urls);
 237                 rpc_set_error(nfs->rpc, "Out of memory");
 238                 return NULL;
 239         }
 240         *strp = 0;
 241
 242         if (dir) {
 243                 flagsp = strchr(urls->path, '?');
 244                 goto flags;
 245         }
 246
 247         strp = strrchr(urls->path, '/');
 248         if (strp == NULL) {
 249                 if (incomplete) {
 250                         flagsp = strchr(urls->path, '?');
 251                         goto flags;
 252                 }
 253                 nfs_destroy_url(urls);
 254                 rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
 255                 return NULL;
 256         }
 257         urls->file = strdup(strp);
 258         if (urls->path == NULL) {
 259                 nfs_destroy_url(urls);
 260                 rpc_set_error(nfs->rpc, "Out of memory");
 261                 return NULL;
 262         }
 263         *strp = 0;
 264         flagsp = strchr(urls->file, '?');
 265
 266 flags:
 267         if (flagsp) {
 268                 *flagsp = 0;
 269         }
 270
 271         if (urls->file && !strlen(urls->file)) {
 272                 free(urls->file);
 273                 urls->file = NULL;
 274                 if (!incomplete) {
 275                         nfs_destroy_url(urls);
 276                         rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
 277                         return NULL;
 278                 }
 279         }
 280
 281         while (flagsp != NULL && *(flagsp+1) != 0) {
 282                 strp = flagsp + 1;
 283                 flagsp = strchr(strp, '&');
 284                 if (flagsp) {
 285                         *flagsp = 0;
 286                 }
 287                 strp2 = strchr(strp, '=');
 288                 if (strp2) {
 289                         *strp2 = 0;
 290                         strp2++;
 291                         nfs_set_context_args(nfs, strp, strp2);
 292                 }
 293         }
 294
 295         if (urls->server && strlen(urls->server) <= 1) {
 296                 free(urls->server);
 297                 urls->server = NULL;
 298         }
 299
 300         return urls;
 301 }
 302
 303 struct nfs_url *nfs_parse_url_full(struct nfs_context *nfs, const char *url)
 304 {
 305         return nfs_parse_url(nfs, url, 0, 0);
 306 }
 307
 308 struct nfs_url *nfs_parse_url_dir(struct nfs_context *nfs, const char *url)
 309 {
 310         return nfs_parse_url(nfs, url, 1, 0);
 311 }
 312
 313 struct nfs_url *nfs_parse_url_incomplete(struct nfs_context *nfs, const char *url)
 314 {
 315         return nfs_parse_url(nfs, url, 0, 1);
 316 }
 317
 318
 319 void nfs_destroy_url(struct nfs_url *url)
 320 {
 321         if (url) {
 322                 free(url->server);
 323                 free(url->path);
 324                 free(url->file);
 325         }
 326         free(url);
 327 }
 328
 329 struct nfs_context *nfs_init_context(void)
 330 {
 331         struct nfs_context *nfs;
 332
 333         nfs = malloc(sizeof(struct nfs_context));
 334         if (nfs == NULL) {
 335                 return NULL;
 336         }
 337         nfs->rpc = rpc_init_context();
 338         if (nfs->rpc == NULL) {
 339                 free(nfs);
 340                 return NULL;
 341         }
 342
 343         nfs->server = NULL;
 344         nfs->export = NULL;
 345
 346         nfs->rootfh.data.data_len = 0;
 347         nfs->rootfh.data.data_val = NULL;
 348
 349         return nfs;
 350 }
 351
 352 void nfs_destroy_context(struct nfs_context *nfs)
 353 {
 354         rpc_destroy_context(nfs->rpc);
 355         nfs->rpc = NULL;
 356
 357         if (nfs->server) {
 358                 free(nfs->server);
 359                 nfs->server = NULL;
 360         }
 361
 362         if (nfs->export) {
 363                 free(nfs->export);
 364                 nfs->export = NULL;
 365         }
 366
 367         if (nfs->rootfh.data.data_val != NULL) {
 368                 free(nfs->rootfh.data.data_val);
 369                 nfs->rootfh.data.data_val = NULL;
 370         }
 371
 372         free(nfs);
 373 }
 374
 375 struct rpc_cb_data {
 376        char *server;
 377        uint32_t program;
 378        uint32_t version;
 379
 380        rpc_cb cb;
 381        void *private_data;
 382 };
 383
 384 void free_rpc_cb_data(struct rpc_cb_data *data)
 385 {
 386         free(data->server);
 387         data->server = NULL;
 388         free(data);
 389 }
 390
 391 static void rpc_connect_program_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 392 {
 393         struct rpc_cb_data *data = private_data;
 394
 395         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 396
 397         /* Dont want any more callbacks even if the socket is closed */
 398         rpc->connect_cb = NULL;
 399
 400         if (status == RPC_STATUS_ERROR) {
 401                 data->cb(rpc, status, command_data, data->private_data);
 402                 free_rpc_cb_data(data);
 403                 return;
 404         }
 405         if (status == RPC_STATUS_CANCEL) {
 406                 data->cb(rpc, status, "Command was cancelled", data->private_data);
 407                 free_rpc_cb_data(data);
 408                 return;
 409         }
 410
 411         data->cb(rpc, status, NULL, data->private_data);
 412         free_rpc_cb_data(data);
 413 }
 414
 415 static void rpc_connect_program_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 416 {
 417         struct rpc_cb_data *data = private_data;
 418         uint32_t rpc_port;
 419
 420         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 421
 422         if (status == RPC_STATUS_ERROR) {
 423                 data->cb(rpc, status, command_data, data->private_data);
 424                 free_rpc_cb_data(data);
 425                 return;
 426         }
 427         if (status == RPC_STATUS_CANCEL) {
 428                 data->cb(rpc, status, "Command was cancelled", data->private_data);
 429                 free_rpc_cb_data(data);
 430                 return;
 431         }
 432
 433         rpc_port = *(uint32_t *)command_data;
 434         if (rpc_port == 0) {
 435                 rpc_set_error(rpc, "RPC error. Program is not available on %s", data->server);
 436                 data->cb(rpc, RPC_STATUS_ERROR, rpc_get_error(rpc), data->private_data);
 437                 free_rpc_cb_data(data);
 438                 return;
 439         }
 440
 441         rpc_disconnect(rpc, "normal disconnect");
 442         if (rpc_connect_async(rpc, data->server, rpc_port, rpc_connect_program_4_cb, data) != 0) {
 443                 data->cb(rpc, status, command_data, data->private_data);
 444                 free_rpc_cb_data(data);
 445                 return;
 446         }
 447 }
 448
 449 static void rpc_connect_program_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 450 {
 451         struct rpc_cb_data *data = private_data;
 452
 453         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 454
 455         if (status == RPC_STATUS_ERROR) {
 456                 data->cb(rpc, status, command_data, data->private_data);
 457                 free_rpc_cb_data(data);
 458                 return;
 459         }
 460         if (status == RPC_STATUS_CANCEL) {
 461                 data->cb(rpc, status, "Command was cancelled", data->private_data);
 462                 free_rpc_cb_data(data);
 463                 return;
 464         }
 465
 466         if (rpc_pmap_getport_async(rpc, data->program, data->version, IPPROTO_TCP, rpc_connect_program_3_cb, private_data) != 0) {
 467                 data->cb(rpc, status, command_data, data->private_data);
 468                 free_rpc_cb_data(data);
 469                 return;
 470         }
 471 }
 472
 473 static void rpc_connect_program_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 474 {
 475         struct rpc_cb_data *data = private_data;
 476
 477         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 478
 479         /* Dont want any more callbacks even if the socket is closed */
 480         rpc->connect_cb = NULL;
 481
 482         if (status == RPC_STATUS_ERROR) {
 483                 data->cb(rpc, status, command_data, data->private_data);
 484                 free_rpc_cb_data(data);
 485                 return;
 486         }
 487         if (status == RPC_STATUS_CANCEL) {
 488                 data->cb(rpc, status, "Command was cancelled", data->private_data);
 489                 free_rpc_cb_data(data);
 490                 return;
 491         }
 492
 493         if (rpc_pmap_null_async(rpc, rpc_connect_program_2_cb, data) != 0) {
 494                 data->cb(rpc, status, command_data, data->private_data);
 495                 free_rpc_cb_data(data);
 496                 return;
 497         }
 498 }
 499
 500 int rpc_connect_program_async(struct rpc_context *rpc, char *server, int program, int version, rpc_cb cb, void *private_data)
 501 {
 502         struct rpc_cb_data *data;
 503
 504         data = malloc(sizeof(struct rpc_cb_data));
 505         if (data == NULL) {
 506                 return -1;
 507         }
 508         memset(data, 0, sizeof(struct rpc_cb_data));
 509         data->server       = strdup(server);
 510         data->program      = program;
 511         data->version      = version;
 512
 513         data->cb           = cb;
 514         data->private_data = private_data;
 515
 516         if (rpc_connect_async(rpc, server, 111, rpc_connect_program_1_cb, data) != 0) {
 517                 rpc_set_error(rpc, "Failed to start connection");
 518                 free_rpc_cb_data(data);
 519                 return -1;
 520         }
 521         return 0;
 522 }
 523
 524 void free_nfs_cb_data(struct nfs_cb_data *data)
 525 {
 526         if (data->saved_path != NULL) {
 527                 free(data->saved_path);
 528                 data->saved_path = NULL;
 529         }
 530
 531         if (data->continue_data != NULL) {
 532                 data->free_continue_data(data->continue_data);
 533                 data->continue_data = NULL;
 534         }
 535
 536         if (data->fh.data.data_val != NULL) {
 537                 free(data->fh.data.data_val);
 538                 data->fh.data.data_val = NULL;
 539         }
 540
 541         if (data->buffer != NULL) {
 542                 free(data->buffer);
 543                 data->buffer = NULL;
 544         }
 545
 546         free(data);
 547 }
 548
 549
 550
 551
 552
 553 static void nfs_mount_10_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 554 {
 555         struct nfs_cb_data *data = private_data;
 556         struct nfs_context *nfs = data->nfs;
 557
 558         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 559
 560         if (status == RPC_STATUS_ERROR) {
 561                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 562                 free_nfs_cb_data(data);
 563                 return;
 564         }
 565         if (status == RPC_STATUS_CANCEL) {
 566                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 567                 free_nfs_cb_data(data);
 568                 return;
 569         }
 570
 571         data->cb(0, nfs, NULL, data->private_data);
 572         free_nfs_cb_data(data);
 573 }
 574
 575 static void nfs_mount_9_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 576 {
 577         struct nfs_cb_data *data = private_data;
 578         struct nfs_context *nfs = data->nfs;
 579         FSINFO3res *res = command_data;
 580         struct GETATTR3args args;
 581
 582         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 583
 584         if (status == RPC_STATUS_ERROR) {
 585                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 586                 free_nfs_cb_data(data);
 587                 return;
 588         }
 589         if (status == RPC_STATUS_CANCEL) {
 590                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 591                 free_nfs_cb_data(data);
 592                 return;
 593         }
 594
 595         nfs->readmax = res->FSINFO3res_u.resok.rtmax;
 596         nfs->writemax = res->FSINFO3res_u.resok.wtmax;
 597
 598         memset(&args, 0, sizeof(GETATTR3args));
 599         args.object = nfs->rootfh;
 600
 601         if (rpc_nfs3_getattr_async(rpc, nfs_mount_10_cb, &args, data) != 0) {
 602                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 603                 free_nfs_cb_data(data);
 604                 return;
 605         }
 606 }
 607
 608 static void nfs_mount_8_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 609 {
 610         struct nfs_cb_data *data = private_data;
 611         struct nfs_context *nfs = data->nfs;
 612         struct FSINFO3args args;
 613
 614         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 615
 616         if (status == RPC_STATUS_ERROR) {
 617                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 618                 free_nfs_cb_data(data);
 619                 return;
 620         }
 621         if (status == RPC_STATUS_CANCEL) {
 622                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 623                 free_nfs_cb_data(data);
 624                 return;
 625         }
 626
 627         args.fsroot = nfs->rootfh;
 628         if (rpc_nfs3_fsinfo_async(rpc, nfs_mount_9_cb, &args, data) != 0) {
 629                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 630                 free_nfs_cb_data(data);
 631                 return;
 632         }
 633 }
 634
 635
 636 static void nfs_mount_7_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 637 {
 638         struct nfs_cb_data *data = private_data;
 639         struct nfs_context *nfs = data->nfs;
 640
 641         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 642
 643         /* Dont want any more callbacks even if the socket is closed */
 644         rpc->connect_cb = NULL;
 645
 646         if (status == RPC_STATUS_ERROR) {
 647                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 648                 free_nfs_cb_data(data);
 649                 return;
 650         }
 651         if (status == RPC_STATUS_CANCEL) {
 652                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 653                 free_nfs_cb_data(data);
 654                 return;
 655         }
 656
 657         if (rpc_nfs3_null_async(rpc, nfs_mount_8_cb, data) != 0) {
 658                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 659                 free_nfs_cb_data(data);
 660                 return;
 661         }
 662 }
 663
 664
 665 static void nfs_mount_6_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 666 {
 667         struct nfs_cb_data *data = private_data;
 668         struct nfs_context *nfs = data->nfs;
 669         mountres3 *res;
 670
 671         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 672
 673         if (status == RPC_STATUS_ERROR) {
 674                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 675                 free_nfs_cb_data(data);
 676                 return;
 677         }
 678         if (status == RPC_STATUS_CANCEL) {
 679                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 680                 free_nfs_cb_data(data);
 681                 return;
 682         }
 683
 684         res = command_data;
 685         if (res->fhs_status != MNT3_OK) {
 686                 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));
 687                 data->cb(mountstat3_to_errno(res->fhs_status), nfs, rpc_get_error(rpc), data->private_data);
 688                 free_nfs_cb_data(data);
 689                 return;
 690         }
 691
 692         nfs->rootfh.data.data_len = res->mountres3_u.mountinfo.fhandle.fhandle3_len;
 693         nfs->rootfh.data.data_val = malloc(nfs->rootfh.data.data_len);
 694         if (nfs->rootfh.data.data_val == NULL) {
 695                 rpc_set_error(rpc, "Out of memory. Could not allocate memory to store root filehandle");
 696                 data->cb(-ENOMEM, nfs, rpc_get_error(rpc), data->private_data);
 697                 free_nfs_cb_data(data);
 698                 return;
 699         }
 700         memcpy(nfs->rootfh.data.data_val, res->mountres3_u.mountinfo.fhandle.fhandle3_val, nfs->rootfh.data.data_len);
 701
 702         rpc_disconnect(rpc, "normal disconnect");
 703         if (rpc_connect_async(rpc, nfs->server, 2049, nfs_mount_7_cb, data) != 0) {
 704                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 705                 free_nfs_cb_data(data);
 706                 return;
 707         }
 708         /* NFS TCP connections we want to autoreconnect after sessions are torn down (due to inactivity or error) */
 709         rpc_set_autoreconnect(rpc);
 710 }
 711
 712
 713 static void nfs_mount_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 714 {
 715         struct nfs_cb_data *data = private_data;
 716         struct nfs_context *nfs = data->nfs;
 717
 718         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 719
 720         if (status == RPC_STATUS_ERROR) {
 721                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 722                 free_nfs_cb_data(data);
 723                 return;
 724         }
 725         if (status == RPC_STATUS_CANCEL) {
 726                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 727                 free_nfs_cb_data(data);
 728                 return;
 729         }
 730
 731         if (rpc_mount3_mnt_async(rpc, nfs_mount_6_cb, nfs->export, data) != 0) {
 732                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 733                 free_nfs_cb_data(data);
 734                 return;
 735         }
 736 }
 737
 738 static void nfs_mount_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 739 {
 740         struct nfs_cb_data *data = private_data;
 741         struct nfs_context *nfs = data->nfs;
 742
 743         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 744
 745         /* Dont want any more callbacks even if the socket is closed */
 746         rpc->connect_cb = NULL;
 747
 748         if (status == RPC_STATUS_ERROR) {
 749                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 750                 free_nfs_cb_data(data);
 751                 return;
 752         }
 753         if (status == RPC_STATUS_CANCEL) {
 754                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 755                 free_nfs_cb_data(data);
 756                 return;
 757         }
 758
 759         if (rpc_mount3_null_async(rpc, nfs_mount_5_cb, data) != 0) {
 760                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 761                 free_nfs_cb_data(data);
 762                 return;
 763         }
 764 }
 765
 766 static void nfs_mount_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 767 {
 768         struct nfs_cb_data *data = private_data;
 769         struct nfs_context *nfs = data->nfs;
 770         uint32_t mount_port;
 771
 772         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 773
 774         if (status == RPC_STATUS_ERROR) {
 775                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 776                 free_nfs_cb_data(data);
 777                 return;
 778         }
 779         if (status == RPC_STATUS_CANCEL) {
 780                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 781                 free_nfs_cb_data(data);
 782                 return;
 783         }
 784
 785         mount_port = *(uint32_t *)command_data;
 786         if (mount_port == 0) {
 787                 rpc_set_error(rpc, "RPC error. Mount program is not available on %s", nfs->server);
 788                 data->cb(-ENOENT, nfs, command_data, data->private_data);
 789                 free_nfs_cb_data(data);
 790                 return;
 791         }
 792
 793         rpc_disconnect(rpc, "normal disconnect");
 794         if (rpc_connect_async(rpc, nfs->server, mount_port, nfs_mount_4_cb, data) != 0) {
 795                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 796                 free_nfs_cb_data(data);
 797                 return;
 798         }
 799 }
 800
 801
 802 static void nfs_mount_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 803 {
 804         struct nfs_cb_data *data = private_data;
 805         struct nfs_context *nfs = data->nfs;
 806
 807         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 808
 809         if (status == RPC_STATUS_ERROR) {
 810                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 811                 free_nfs_cb_data(data);
 812                 return;
 813         }
 814         if (status == RPC_STATUS_CANCEL) {
 815                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 816                 free_nfs_cb_data(data);
 817                 return;
 818         }
 819
 820         if (rpc_pmap_getport_async(rpc, MOUNT_PROGRAM, MOUNT_V3, IPPROTO_TCP, nfs_mount_3_cb, private_data) != 0) {
 821                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 822                 free_nfs_cb_data(data);
 823                 return;
 824         }
 825 }
 826
 827 static void nfs_mount_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 828 {
 829         struct nfs_cb_data *data = private_data;
 830         struct nfs_context *nfs = data->nfs;
 831
 832         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 833
 834         /* Dont want any more callbacks even if the socket is closed */
 835         rpc->connect_cb = NULL;
 836
 837         if (status == RPC_STATUS_ERROR) {
 838                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 839                 free_nfs_cb_data(data);
 840                 return;
 841         }
 842         if (status == RPC_STATUS_CANCEL) {
 843                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 844                 free_nfs_cb_data(data);
 845                 return;
 846         }
 847
 848         if (rpc_pmap_null_async(rpc, nfs_mount_2_cb, data) != 0) {
 849                 data->cb(-ENOMEM, nfs, command_data, data->private_data);
 850                 free_nfs_cb_data(data);
 851                 return;
 852         }
 853 }
 854
 855 /*
 856  * Async call for mounting an nfs share and geting the root filehandle
 857  */
 858 int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *export, nfs_cb cb, void *private_data)
 859 {
 860         struct nfs_cb_data *data;
 861         char *new_server, *new_export;
 862
 863         data = malloc(sizeof(struct nfs_cb_data));
 864         if (data == NULL) {
 865                 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
 866                 return -1;
 867         }
 868         memset(data, 0, sizeof(struct nfs_cb_data));
 869         new_server = strdup(server);
 870         new_export = strdup(export);
 871         if (nfs->server != NULL) {
 872                 free(nfs->server);
 873         }
 874         nfs->server        = new_server;
 875         if (nfs->export != NULL) {
 876                 free(nfs->export);
 877         }
 878         nfs->export        = new_export;
 879         data->nfs          = nfs;
 880         data->cb           = cb;
 881         data->private_data = private_data;
 882
 883         if (rpc_connect_async(nfs->rpc, server, 111, nfs_mount_1_cb, data) != 0) {
 884                 rpc_set_error(nfs->rpc, "Failed to start connection");
 885                 free_nfs_cb_data(data);
 886                 return -1;
 887         }
 888
 889         return 0;
 890 }
 891
 892
 893
 894 /*
 895  * Functions to first look up a path, component by component, and then finally call a specific function once
 896  * the filehandle for the final component is found.
 897  */
 898 static void nfs_lookup_path_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 899 {
 900         struct nfs_cb_data *data = private_data;
 901         struct nfs_context *nfs = data->nfs;
 902         LOOKUP3res *res;
 903
 904         assert(rpc->magic == RPC_CONTEXT_MAGIC);
 905
 906         if (status == RPC_STATUS_ERROR) {
 907                 data->cb(-EFAULT, nfs, command_data, data->private_data);
 908                 free_nfs_cb_data(data);
 909                 return;
 910         }
 911         if (status == RPC_STATUS_CANCEL) {
 912                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
 913                 free_nfs_cb_data(data);
 914                 return;
 915         }
 916
 917         res = command_data;
 918         if (res->status != NFS3_OK) {
 919                 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));
 920                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
 921                 free_nfs_cb_data(data);
 922                 return;
 923         }
 924
 925         if (nfs_lookup_path_async_internal(nfs, data, &res->LOOKUP3res_u.resok.object) != 0) {
 926                 rpc_set_error(nfs->rpc, "Failed to create lookup pdu");
 927                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 928                 free_nfs_cb_data(data);
 929                 return;
 930         }
 931 }
 932
 933 static int nfs_lookup_path_async_internal(struct nfs_context *nfs, struct nfs_cb_data *data, struct nfs_fh3 *fh)
 934 {
 935         char *path, *str;
 936         LOOKUP3args args;
 937
 938         while (*data->path == '/') {
 939               data->path++;
 940         }
 941
 942         path = data->path;
 943         str = strchr(path, '/');
 944         if (str != NULL) {
 945                 *str = 0;
 946                 data->path = str+1;
 947         } else {
 948                 while (*data->path != 0) {
 949                       data->path++;
 950                 }
 951         }
 952
 953         if (*path == 0) {
 954                 data->fh.data.data_len = fh->data.data_len;
 955                 data->fh.data.data_val = malloc(data->fh.data.data_len);
 956                 if (data->fh.data.data_val == NULL) {
 957                         rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh for %s", data->path);
 958                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 959                         free_nfs_cb_data(data);
 960                         return -1;
 961                 }
 962                 memcpy(data->fh.data.data_val, fh->data.data_val, data->fh.data.data_len);
 963                 data->continue_cb(nfs, data);
 964                 return 0;
 965         }
 966
 967
 968         memset(&args, 0, sizeof(LOOKUP3args));
 969         args.what.dir = *fh;
 970         args.what.name = path;
 971
 972         if (rpc_nfs3_lookup_async(nfs->rpc, nfs_lookup_path_1_cb, &args, data) != 0) {
 973                 rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s", data->path);
 974                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
 975                 free_nfs_cb_data(data);
 976                 return -1;
 977         }
 978         return 0;
 979 }
 980
 981 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)
 982 {
 983         struct nfs_cb_data *data;
 984
 985         if (path[0] != 0 && path[0] != '/') {
 986                 rpc_set_error(nfs->rpc, "Pathname is not absolute %s", path);
 987                 return -1;
 988         }
 989
 990         data = malloc(sizeof(struct nfs_cb_data));
 991         if (data == NULL) {
 992                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
 993                 return -1;
 994         }
 995         memset(data, 0, sizeof(struct nfs_cb_data));
 996         data->nfs                = nfs;
 997         data->cb                 = cb;
 998         data->continue_cb        = continue_cb;
 999         data->continue_data      = continue_data;
1000         data->free_continue_data = free_continue_data;
1001         data->continue_int       = continue_int;
1002         data->private_data       = private_data;
1003         data->saved_path         = strdup(path);
1004         if (data->saved_path == NULL) {
1005                 rpc_set_error(nfs->rpc, "out of memory: failed to copy path string");
1006                 free_nfs_cb_data(data);
1007                 return -1;
1008         }
1009         data->path = data->saved_path;
1010
1011         if (nfs_lookup_path_async_internal(nfs, data, &nfs->rootfh) != 0) {
1012                 /* return 0 here since the callback will be invoked if there is a failure */
1013                 return 0;
1014         }
1015         return 0;
1016 }
1017
1018
1019
1020
1021
1022 /*
1023  * Async stat()
1024  */
1025 static void nfs_stat_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1026 {
1027         GETATTR3res *res;
1028         struct nfs_cb_data *data = private_data;
1029         struct nfs_context *nfs = data->nfs;
1030 #ifdef WIN32
1031   struct __stat64 st;
1032 #else
1033         struct stat st;
1034 #endif
1035
1036         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1037
1038         if (status == RPC_STATUS_ERROR) {
1039                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1040                 free_nfs_cb_data(data);
1041                 return;
1042         }
1043         if (status == RPC_STATUS_CANCEL) {
1044                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1045                 free_nfs_cb_data(data);
1046                 return;
1047         }
1048
1049         res = command_data;
1050         if (res->status != NFS3_OK) {
1051                 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));
1052                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1053                 free_nfs_cb_data(data);
1054                 return;
1055         }
1056
1057         st.st_dev     = -1;
1058         st.st_ino     = res->GETATTR3res_u.resok.obj_attributes.fileid;
1059         st.st_mode    = res->GETATTR3res_u.resok.obj_attributes.mode;
1060         if (res->GETATTR3res_u.resok.obj_attributes.type == NF3DIR) {
1061                 st.st_mode |= S_IFDIR ;
1062         }
1063         if (res->GETATTR3res_u.resok.obj_attributes.type == NF3REG) {
1064                 st.st_mode |= S_IFREG ;
1065         }
1066         st.st_nlink   = res->GETATTR3res_u.resok.obj_attributes.nlink;
1067         st.st_uid     = res->GETATTR3res_u.resok.obj_attributes.uid;
1068         st.st_gid     = res->GETATTR3res_u.resok.obj_attributes.gid;
1069         st.st_rdev    = 0;
1070         st.st_size    = res->GETATTR3res_u.resok.obj_attributes.size;
1071 #ifndef WIN32
1072         st.st_blksize = 4096;
1073         st.st_blocks  = res->GETATTR3res_u.resok.obj_attributes.size / 4096;
1074 #endif//WIN32
1075         st.st_atime   = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
1076         st.st_mtime   = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
1077         st.st_ctime   = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
1078
1079         data->cb(0, nfs, &st, data->private_data);
1080         free_nfs_cb_data(data);
1081 }
1082
1083 static int nfs_stat_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1084 {
1085         struct GETATTR3args args;
1086
1087         memset(&args, 0, sizeof(GETATTR3args));
1088         args.object = data->fh;
1089
1090         if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat_1_cb, &args, data) != 0) {
1091                 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
1092                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1093                 free_nfs_cb_data(data);
1094                 return -1;
1095         }
1096         return 0;
1097 }
1098
1099 int nfs_stat_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1100 {
1101         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_stat_continue_internal, NULL, NULL, 0) != 0) {
1102                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1103                 return -1;
1104         }
1105
1106         return 0;
1107 }
1108
1109
1110
1111
1112
1113 /*
1114  * Async open()
1115  */
1116 static void nfs_open_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1117 {
1118         ACCESS3res *res;
1119         struct nfs_cb_data *data = private_data;
1120         struct nfs_context *nfs = data->nfs;
1121         struct nfsfh *nfsfh;
1122         unsigned int nfsmode = 0;
1123
1124         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1125
1126         if (status == RPC_STATUS_ERROR) {
1127                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1128                 free_nfs_cb_data(data);
1129                 return;
1130         }
1131         if (status == RPC_STATUS_CANCEL) {
1132                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1133                 free_nfs_cb_data(data);
1134                 return;
1135         }
1136
1137         res = command_data;
1138         if (res->status != NFS3_OK) {
1139                 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));
1140                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1141                 free_nfs_cb_data(data);
1142                 return;
1143         }
1144
1145         if (data->continue_int & O_WRONLY) {
1146                 nfsmode |= ACCESS3_MODIFY;
1147         }
1148         if (data->continue_int & O_RDWR) {
1149                 nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
1150         }
1151         if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
1152                 nfsmode |= ACCESS3_READ;
1153         }
1154
1155
1156         if (res->ACCESS3res_u.resok.access != nfsmode) {
1157                 rpc_set_error(nfs->rpc, "NFS: ACCESS denied. Required access %c%c%c. Allowed access %c%c%c",
1158                                         nfsmode&ACCESS3_READ?'r':'-',
1159                                         nfsmode&ACCESS3_MODIFY?'w':'-',
1160                                         nfsmode&ACCESS3_EXECUTE?'x':'-',
1161                                         res->ACCESS3res_u.resok.access&ACCESS3_READ?'r':'-',
1162                                         res->ACCESS3res_u.resok.access&ACCESS3_MODIFY?'w':'-',
1163                                         res->ACCESS3res_u.resok.access&ACCESS3_EXECUTE?'x':'-');
1164                 data->cb(-EACCES, nfs, rpc_get_error(nfs->rpc), data->private_data);
1165                 free_nfs_cb_data(data);
1166                 return;
1167         }
1168
1169         nfsfh = malloc(sizeof(struct nfsfh));
1170         if (nfsfh == NULL) {
1171                 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
1172                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1173                 free_nfs_cb_data(data);
1174                 return;
1175         }
1176         memset(nfsfh, 0, sizeof(struct nfsfh));
1177
1178         if (data->continue_int & O_SYNC) {
1179                 nfsfh->is_sync = 1;
1180         }
1181
1182         /* steal the filehandle */
1183         nfsfh->fh = data->fh;
1184         data->fh.data.data_val = NULL;
1185
1186         data->cb(0, nfs, nfsfh, data->private_data);
1187         free_nfs_cb_data(data);
1188 }
1189
1190 static int nfs_open_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1191 {
1192         int nfsmode = 0;
1193         ACCESS3args args;
1194
1195         if (data->continue_int & O_WRONLY) {
1196                 nfsmode |= ACCESS3_MODIFY;
1197         }
1198         if (data->continue_int & O_RDWR) {
1199                 nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
1200         }
1201         if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
1202                 nfsmode |= ACCESS3_READ;
1203         }
1204
1205         memset(&args, 0, sizeof(ACCESS3args));
1206         args.object = data->fh;
1207         args.access = nfsmode;
1208
1209         if (rpc_nfs3_access_async(nfs->rpc, nfs_open_cb, &args, data) != 0) {
1210                 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
1211                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1212                 free_nfs_cb_data(data);
1213                 return -1;
1214         }
1215         return 0;
1216 }
1217
1218 int nfs_open_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
1219 {
1220         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_open_continue_internal, NULL, NULL, mode) != 0) {
1221                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1222                 return -1;
1223         }
1224
1225         return 0;
1226 }
1227
1228
1229
1230
1231
1232 /*
1233  * Async pread()
1234  */
1235 static void nfs_pread_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1236 {
1237         struct nfs_cb_data *data = private_data;
1238         struct nfs_context *nfs = data->nfs;
1239         READ3res *res;
1240
1241         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1242
1243         if (status == RPC_STATUS_ERROR) {
1244                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1245                 free_nfs_cb_data(data);
1246                 return;
1247         }
1248         if (status == RPC_STATUS_CANCEL) {
1249                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1250                 free_nfs_cb_data(data);
1251                 return;
1252         }
1253
1254         res = command_data;
1255         if (res->status != NFS3_OK) {
1256                 rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1257                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1258                 free_nfs_cb_data(data);
1259                 return;
1260         }
1261
1262         data->nfsfh->offset += res->READ3res_u.resok.count;
1263         data->cb(res->READ3res_u.resok.count, nfs, res->READ3res_u.resok.data.data_val, data->private_data);
1264         free_nfs_cb_data(data);
1265 }
1266
1267 static void nfs_pread_mcb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1268 {
1269         struct nfs_mcb_data *mdata = private_data;
1270         struct nfs_cb_data *data = mdata->data;
1271         struct nfs_context *nfs = data->nfs;
1272         READ3res *res;
1273
1274         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1275
1276         data->num_calls--;
1277
1278         if (status == RPC_STATUS_ERROR) {
1279                 /* flag the failure but do not invoke callback until we have received all responses */
1280                 data->error = 1;
1281         }
1282         if (status == RPC_STATUS_CANCEL) {
1283                 /* flag the cancellation but do not invoke callback until we have received all responses */
1284                 data->cancel = 1;
1285         }
1286
1287         /* reassemble the data into the buffer */
1288         if (status == RPC_STATUS_SUCCESS) {
1289                 res = command_data;
1290                 if (res->status != NFS3_OK) {
1291                         rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1292                         data->error = 1;
1293                 } else  {
1294                         if (res->READ3res_u.resok.count > 0) {
1295                                 memcpy(&data->buffer[mdata->offset - data->start_offset], res->READ3res_u.resok.data.data_val, res->READ3res_u.resok.count);
1296                                 if ((unsigned)data->max_offset < mdata->offset + res->READ3res_u.resok.count) {
1297                                         data->max_offset = mdata->offset + res->READ3res_u.resok.count;
1298                                 }
1299                         }
1300                 }
1301         }
1302
1303         if (data->num_calls > 0) {
1304                 /* still waiting for more replies */
1305                 free(mdata);
1306                 return;
1307         }
1308
1309         if (data->error != 0) {
1310                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1311                 free_nfs_cb_data(data);
1312                 free(mdata);
1313                 return;
1314         }
1315         if (data->cancel != 0) {
1316                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1317                 free_nfs_cb_data(data);
1318                 free(mdata);
1319                 return;
1320         }
1321
1322         data->nfsfh->offset = data->max_offset;
1323         data->cb(data->max_offset - data->start_offset, nfs, data->buffer, data->private_data);
1324
1325         free_nfs_cb_data(data);
1326         free(mdata);
1327 }
1328
1329 int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, nfs_cb cb, void *private_data)
1330 {
1331         struct nfs_cb_data *data;
1332
1333         data = malloc(sizeof(struct nfs_cb_data));
1334         if (data == NULL) {
1335                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1336                 return -1;
1337         }
1338         memset(data, 0, sizeof(struct nfs_cb_data));
1339         data->nfs          = nfs;
1340         data->cb           = cb;
1341         data->private_data = private_data;
1342         data->nfsfh        = nfsfh;
1343
1344         nfsfh->offset = offset;
1345
1346         if (count <= nfs_get_readmax(nfs)) {
1347                 READ3args args;
1348
1349                 memset(&args, 0, sizeof(READ3args));
1350                 args.file = nfsfh->fh;
1351                 args.offset = offset;
1352                 args.count = count;
1353
1354                 if (rpc_nfs3_read_async(nfs->rpc, nfs_pread_cb, &args, data) != 0) {
1355                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
1356                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1357                         free_nfs_cb_data(data);
1358                         return -1;
1359                 }
1360                 return 0;
1361         }
1362
1363         /* trying to read more than maximum server read size, we has to chop it up into smaller
1364          * reads and collect into a reassembly buffer.
1365          * we send all reads in parallel so that performance is still good.
1366          */
1367         data->max_offset = offset;
1368         data->start_offset = offset;
1369
1370         data->buffer =  malloc(count);
1371         if (data->buffer == NULL) {
1372                 rpc_set_error(nfs->rpc, "Out-Of-Memory: Failed to allocate reassembly buffer for %d bytes", (int)count);
1373                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1374                 free_nfs_cb_data(data);
1375                 return -1;
1376         }
1377
1378         while (count > 0) {
1379                 uint64_t readcount = count;
1380                 struct nfs_mcb_data *mdata;
1381                 READ3args args;
1382
1383                 if (readcount > nfs_get_readmax(nfs)) {
1384                         readcount = nfs_get_readmax(nfs);
1385                 }
1386
1387                 mdata = malloc(sizeof(struct nfs_mcb_data));
1388                 if (mdata == NULL) {
1389                         rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
1390                         return -1;
1391                 }
1392                 memset(mdata, 0, sizeof(struct nfs_mcb_data));
1393                 mdata->data   = data;
1394                 mdata->offset = offset;
1395                 mdata->count  = readcount;
1396
1397                 memset(&args, 0, sizeof(READ3args));
1398                 args.file = nfsfh->fh;
1399                 args.offset = offset;
1400                 args.count = readcount;
1401
1402                 if (rpc_nfs3_read_async(nfs->rpc, nfs_pread_mcb, &args, mdata) != 0) {
1403                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
1404                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1405                         free(mdata);
1406                         return -1;
1407                 }
1408
1409                 count               -= readcount;
1410                 offset              += readcount;
1411                 data->num_calls++;
1412          }
1413
1414          return 0;
1415 }
1416
1417 /*
1418  * Async read()
1419  */
1420 int nfs_read_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, nfs_cb cb, void *private_data)
1421 {
1422         return nfs_pread_async(nfs, nfsfh, nfsfh->offset, count, cb, private_data);
1423 }
1424
1425
1426
1427 /*
1428  * Async pwrite()
1429  */
1430 static void nfs_pwrite_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1431 {
1432         struct nfs_cb_data *data = private_data;
1433         struct nfs_context *nfs = data->nfs;
1434         WRITE3res *res;
1435
1436         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1437
1438         if (status == RPC_STATUS_ERROR) {
1439                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1440                 free_nfs_cb_data(data);
1441                 return;
1442         }
1443         if (status == RPC_STATUS_CANCEL) {
1444                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1445                 free_nfs_cb_data(data);
1446                 return;
1447         }
1448
1449         res = command_data;
1450         if (res->status != NFS3_OK) {
1451                 rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1452                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1453                 free_nfs_cb_data(data);
1454                 return;
1455         }
1456
1457         data->nfsfh->offset += res->WRITE3res_u.resok.count;
1458         data->cb(res->WRITE3res_u.resok.count, nfs, NULL, data->private_data);
1459         free_nfs_cb_data(data);
1460 }
1461
1462 static void nfs_pwrite_mcb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1463 {
1464         struct nfs_mcb_data *mdata = private_data;
1465         struct nfs_cb_data *data = mdata->data;
1466         struct nfs_context *nfs = data->nfs;
1467         WRITE3res *res;
1468
1469         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1470
1471         data->num_calls--;
1472
1473         if (status == RPC_STATUS_ERROR) {
1474                 /* flag the failure but do not invoke callback until we have received all responses */
1475                 data->error = 1;
1476         }
1477         if (status == RPC_STATUS_CANCEL) {
1478                 /* flag the cancellation but do not invoke callback until we have received all responses */
1479                 data->cancel = 1;
1480         }
1481
1482         if (status == RPC_STATUS_SUCCESS) {
1483                 res = command_data;
1484                 if (res->status != NFS3_OK) {
1485                         rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1486                         data->error = 1;
1487                 } else  {
1488                         if (res->WRITE3res_u.resok.count > 0) {
1489                                 if ((unsigned)data->max_offset < mdata->offset + res->WRITE3res_u.resok.count) {
1490                                         data->max_offset = mdata->offset + res->WRITE3res_u.resok.count;
1491                                 }
1492                         }
1493                 }
1494         }
1495
1496         if (data->num_calls > 0) {
1497                 /* still waiting for more replies */
1498                 free(mdata);
1499                 return;
1500         }
1501
1502         if (data->error != 0) {
1503                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1504                 free_nfs_cb_data(data);
1505                 free(mdata);
1506                 return;
1507         }
1508         if (data->cancel != 0) {
1509                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1510                 free_nfs_cb_data(data);
1511                 free(mdata);
1512                 return;
1513         }
1514
1515         data->nfsfh->offset = data->max_offset;
1516         data->cb(data->max_offset - data->start_offset, nfs, NULL, data->private_data);
1517
1518         free_nfs_cb_data(data);
1519         free(mdata);
1520 }
1521
1522
1523 int nfs_pwrite_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buf, nfs_cb cb, void *private_data)
1524 {
1525         struct nfs_cb_data *data;
1526
1527         data = malloc(sizeof(struct nfs_cb_data));
1528         if (data == NULL) {
1529                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1530                 return -1;
1531         }
1532         memset(data, 0, sizeof(struct nfs_cb_data));
1533         data->nfs          = nfs;
1534         data->cb           = cb;
1535         data->private_data = private_data;
1536         data->nfsfh        = nfsfh;
1537
1538         nfsfh->offset = offset;
1539
1540         if (count <= nfs_get_writemax(nfs)) {
1541                 WRITE3args args;
1542
1543                 memset(&args, 0, sizeof(WRITE3args));
1544                 args.file = nfsfh->fh;
1545                 args.offset = offset;
1546                 args.count  = count;
1547                 args.stable = nfsfh->is_sync?FILE_SYNC:UNSTABLE;
1548                 args.data.data_len = count;
1549                 args.data.data_val = buf;
1550
1551                 if (rpc_nfs3_write_async(nfs->rpc, nfs_pwrite_cb, &args, data) != 0) {
1552                         rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
1553                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1554                         free_nfs_cb_data(data);
1555                         return -1;
1556                 }
1557                 return 0;
1558         }
1559
1560         /* trying to write more than maximum server write size, we has to chop it up into smaller
1561          * chunks.
1562          * we send all writes in parallel so that performance is still good.
1563          */
1564         data->max_offset = offset;
1565         data->start_offset = offset;
1566
1567         while (count > 0) {
1568                 uint64_t writecount = count;
1569                 struct nfs_mcb_data *mdata;
1570                 WRITE3args args;
1571
1572                 if (writecount > nfs_get_writemax(nfs)) {
1573                         writecount = nfs_get_writemax(nfs);
1574                 }
1575
1576                 mdata = malloc(sizeof(struct nfs_mcb_data));
1577                 if (mdata == NULL) {
1578                         rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
1579                         return -1;
1580                 }
1581                 memset(mdata, 0, sizeof(struct nfs_mcb_data));
1582                 mdata->data   = data;
1583                 mdata->offset = offset;
1584                 mdata->count  = writecount;
1585
1586                 memset(&args, 0, sizeof(WRITE3args));
1587                 args.file = nfsfh->fh;
1588                 args.offset = offset;
1589                 args.count  = writecount;
1590                 args.stable = nfsfh->is_sync?FILE_SYNC:UNSTABLE;
1591                 args.data.data_len = writecount;
1592                 args.data.data_val = &buf[offset - data->start_offset];
1593
1594                 if (rpc_nfs3_write_async(nfs->rpc, nfs_pwrite_mcb, &args, mdata) != 0) {
1595                         rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
1596                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1597                         free(mdata);
1598                         return -1;
1599                 }
1600
1601                 count               -= writecount;
1602                 offset              += writecount;
1603                 data->num_calls++;
1604         }
1605
1606         return 0;
1607 }
1608
1609 /*
1610  * Async write()
1611  */
1612 int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buf, nfs_cb cb, void *private_data)
1613 {
1614         return nfs_pwrite_async(nfs, nfsfh, nfsfh->offset, count, buf, cb, private_data);
1615 }
1616
1617
1618
1619
1620 /*
1621  * close
1622  */
1623
1624 int nfs_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
1625 {
1626         if (nfsfh->fh.data.data_val != NULL){
1627                 free(nfsfh->fh.data.data_val);
1628                 nfsfh->fh.data.data_val = NULL;
1629         }
1630         free(nfsfh);
1631
1632         cb(0, nfs, NULL, private_data);
1633         return 0;
1634 };
1635
1636
1637
1638
1639
1640 /*
1641  * Async fstat()
1642  */
1643 int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
1644 {
1645         struct nfs_cb_data *data;
1646         struct GETATTR3args args;
1647
1648         data = malloc(sizeof(struct nfs_cb_data));
1649         if (data == NULL) {
1650                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1651                 return -1;
1652         }
1653         memset(data, 0, sizeof(struct nfs_cb_data));
1654         data->nfs          = nfs;
1655         data->cb           = cb;
1656         data->private_data = private_data;
1657
1658         memset(&args, 0, sizeof(GETATTR3args));
1659         args.object = nfsfh->fh;
1660
1661         if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat_1_cb, &args, data) != 0) {
1662                 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
1663                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1664                 free_nfs_cb_data(data);
1665                 return -1;
1666         }
1667         return 0;
1668 }
1669
1670
1671
1672 /*
1673  * Async fsync()
1674  */
1675 static void nfs_fsync_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1676 {
1677         struct nfs_cb_data *data = private_data;
1678         struct nfs_context *nfs = data->nfs;
1679         COMMIT3res *res;
1680
1681         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1682
1683         if (status == RPC_STATUS_ERROR) {
1684                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1685                 free_nfs_cb_data(data);
1686                 return;
1687         }
1688         if (status == RPC_STATUS_CANCEL) {
1689                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1690                 free_nfs_cb_data(data);
1691                 return;
1692         }
1693
1694         res = command_data;
1695         if (res->status != NFS3_OK) {
1696                 rpc_set_error(nfs->rpc, "NFS: Commit failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1697                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1698                 free_nfs_cb_data(data);
1699                 return;
1700         }
1701
1702         data->cb(0, nfs, NULL, data->private_data);
1703         free_nfs_cb_data(data);
1704 }
1705
1706 int nfs_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
1707 {
1708         struct nfs_cb_data *data;
1709         struct COMMIT3args args;
1710
1711         data = malloc(sizeof(struct nfs_cb_data));
1712         if (data == NULL) {
1713                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1714                 return -1;
1715         }
1716         memset(data, 0, sizeof(struct nfs_cb_data));
1717         data->nfs          = nfs;
1718         data->cb           = cb;
1719         data->private_data = private_data;
1720
1721         args.file = nfsfh->fh;
1722         args.offset = 0;
1723         args.count = 0;
1724         if (rpc_nfs3_commit_async(nfs->rpc, nfs_fsync_cb, &args, data) != 0) {
1725                 rpc_set_error(nfs->rpc, "RPC error: Failed to send COMMIT call for %s", data->path);
1726                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1727                 free_nfs_cb_data(data);
1728                 return -1;
1729         }
1730         return 0;
1731 }
1732
1733
1734
1735
1736 /*
1737  * Async ftruncate()
1738  */
1739 static void nfs_ftruncate_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1740 {
1741         struct nfs_cb_data *data = private_data;
1742         struct nfs_context *nfs = data->nfs;
1743         SETATTR3res *res;
1744
1745         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1746
1747         if (status == RPC_STATUS_ERROR) {
1748                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1749                 free_nfs_cb_data(data);
1750                 return;
1751         }
1752         if (status == RPC_STATUS_CANCEL) {
1753                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1754                 free_nfs_cb_data(data);
1755                 return;
1756         }
1757
1758         res = command_data;
1759         if (res->status != NFS3_OK) {
1760                 rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1761                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1762                 free_nfs_cb_data(data);
1763                 return;
1764         }
1765
1766         data->cb(0, nfs, NULL, data->private_data);
1767         free_nfs_cb_data(data);
1768 }
1769
1770 int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t length, nfs_cb cb, void *private_data)
1771 {
1772         struct nfs_cb_data *data;
1773         SETATTR3args args;
1774
1775         data = malloc(sizeof(struct nfs_cb_data));
1776         if (data == NULL) {
1777                 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1778                 return -1;
1779         }
1780         memset(data, 0, sizeof(struct nfs_cb_data));
1781         data->nfs          = nfs;
1782         data->cb           = cb;
1783         data->private_data = private_data;
1784
1785         memset(&args, 0, sizeof(SETATTR3args));
1786         args.object = nfsfh->fh;
1787         args.new_attributes.size.set_it = 1;
1788         args.new_attributes.size.set_size3_u.size = length;
1789
1790         if (rpc_nfs3_setattr_async(nfs->rpc, nfs_ftruncate_cb, &args, data) != 0) {
1791                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
1792                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1793                 free_nfs_cb_data(data);
1794                 return -1;
1795         }
1796         return 0;
1797 }
1798
1799
1800 /*
1801  * Async truncate()
1802  */
1803 static int nfs_truncate_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1804 {
1805         uint64_t offset = data->continue_int;
1806         struct nfsfh nfsfh;
1807
1808         nfsfh.fh = data->fh;
1809
1810         if (nfs_ftruncate_async(nfs, &nfsfh, offset, data->cb, data->private_data) != 0) {
1811                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
1812                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1813                 free_nfs_cb_data(data);
1814                 return -1;
1815         }
1816         free_nfs_cb_data(data);
1817         return 0;
1818 }
1819
1820 int nfs_truncate_async(struct nfs_context *nfs, const char *path, uint64_t length, nfs_cb cb, void *private_data)
1821 {
1822         uint64_t offset;
1823
1824         offset = length;
1825
1826         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_truncate_continue_internal, NULL, NULL, offset) != 0) {
1827                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1828                 return -1;
1829         }
1830
1831         return 0;
1832 }
1833
1834
1835
1836
1837 /*
1838  * Async mkdir()
1839  */
1840 static void nfs_mkdir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1841 {
1842         MKDIR3res *res;
1843         struct nfs_cb_data *data = private_data;
1844         struct nfs_context *nfs = data->nfs;
1845         char *str = data->continue_data;
1846
1847         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1848
1849         str = &str[strlen(str) + 1];
1850
1851         if (status == RPC_STATUS_ERROR) {
1852                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1853                 free_nfs_cb_data(data);
1854                 return;
1855         }
1856         if (status == RPC_STATUS_CANCEL) {
1857                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1858                 free_nfs_cb_data(data);
1859                 return;
1860         }
1861
1862         res = command_data;
1863         if (res->status != NFS3_OK) {
1864                 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));
1865                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1866                 free_nfs_cb_data(data);
1867                 return;
1868         }
1869
1870         data->cb(0, nfs, NULL, data->private_data);
1871         free_nfs_cb_data(data);
1872 }
1873
1874 static int nfs_mkdir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1875 {
1876         char *str = data->continue_data;
1877         MKDIR3args args;
1878
1879         str = &str[strlen(str) + 1];
1880
1881         memset(&args, 0, sizeof(MKDIR3args));
1882         args.where.dir = data->fh;
1883         args.where.name = str;
1884         args.attributes.mode.set_it = 1;
1885         args.attributes.mode.set_mode3_u.mode = 0755;
1886
1887         if (rpc_nfs3_mkdir_async(nfs->rpc, nfs_mkdir_cb, &args, data) != 0) {
1888                 rpc_set_error(nfs->rpc, "RPC error: Failed to send MKDIR call for %s", data->path);
1889                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1890                 free_nfs_cb_data(data);
1891                 return -1;
1892         }
1893         return 0;
1894 }
1895
1896 int nfs_mkdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1897 {
1898         char *new_path;
1899         char *ptr;
1900
1901         new_path = strdup(path);
1902         if (new_path == NULL) {
1903                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
1904                 return -1;
1905         }
1906
1907         ptr = strrchr(new_path, '/');
1908         if (ptr == NULL) {
1909                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
1910                 return -1;
1911         }
1912         *ptr = 0;
1913
1914         /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
1915         if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_mkdir_continue_internal, new_path, free, 0) != 0) {
1916                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path component");
1917                 return -1;
1918         }
1919
1920         return 0;
1921 }
1922
1923
1924
1925
1926
1927 /*
1928  * Async rmdir()
1929  */
1930 static void nfs_rmdir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1931 {
1932         RMDIR3res *res;
1933         struct nfs_cb_data *data = private_data;
1934         struct nfs_context *nfs = data->nfs;
1935         char *str = data->continue_data;
1936
1937         assert(rpc->magic == RPC_CONTEXT_MAGIC);
1938
1939         str = &str[strlen(str) + 1];
1940
1941         if (status == RPC_STATUS_ERROR) {
1942                 data->cb(-EFAULT, nfs, command_data, data->private_data);
1943                 free_nfs_cb_data(data);
1944                 return;
1945         }
1946         if (status == RPC_STATUS_CANCEL) {
1947                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1948                 free_nfs_cb_data(data);
1949                 return;
1950         }
1951
1952         res = command_data;
1953         if (res->status != NFS3_OK) {
1954                 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));
1955                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1956                 free_nfs_cb_data(data);
1957                 return;
1958         }
1959
1960         data->cb(0, nfs, NULL, data->private_data);
1961         free_nfs_cb_data(data);
1962 }
1963
1964 static int nfs_rmdir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
1965 {
1966         char *str = data->continue_data;
1967         RMDIR3args args;
1968
1969         str = &str[strlen(str) + 1];
1970
1971         args.object.dir = data->fh;
1972         args.object.name = str;
1973         if (rpc_nfs3_rmdir_async(nfs->rpc, nfs_rmdir_cb, &args, data) != 0) {
1974                 rpc_set_error(nfs->rpc, "RPC error: Failed to send RMDIR call for %s", data->path);
1975                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1976                 free_nfs_cb_data(data);
1977                 return -1;
1978         }
1979         return 0;
1980 }
1981
1982 int nfs_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1983 {
1984         char *new_path;
1985         char *ptr;
1986
1987         new_path = strdup(path);
1988         if (new_path == NULL) {
1989                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
1990                 return -1;
1991         }
1992
1993         ptr = strrchr(new_path, '/');
1994         if (ptr == NULL) {
1995                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
1996                 return -1;
1997         }
1998         *ptr = 0;
1999
2000         /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
2001         if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_rmdir_continue_internal, new_path, free, 0) != 0) {
2002                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2003                 return -1;
2004         }
2005
2006         return 0;
2007 }
2008
2009
2010
2011
2012 /*
2013  * Async creat()
2014  */
2015 static void nfs_create_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2016 {
2017         LOOKUP3res *res;
2018         struct nfs_cb_data *data = private_data;
2019         struct nfs_context *nfs = data->nfs;
2020         struct nfsfh *nfsfh;
2021         char *str = data->continue_data;
2022
2023         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2024
2025         if (status == RPC_STATUS_ERROR) {
2026                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2027                 free_nfs_cb_data(data);
2028                 return;
2029         }
2030         if (status == RPC_STATUS_CANCEL) {
2031                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2032                 free_nfs_cb_data(data);
2033                 return;
2034         }
2035
2036         str = &str[strlen(str) + 1];
2037         res = command_data;
2038         if (res->status != NFS3_OK) {
2039                 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));
2040                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2041
2042                 return;
2043         }
2044
2045         nfsfh = malloc(sizeof(struct nfsfh));
2046         if (nfsfh == NULL) {
2047                 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
2048                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2049                 free_nfs_cb_data(data);
2050                 return;
2051         }
2052         memset(nfsfh, 0, sizeof(struct nfsfh));
2053
2054         /* copy the filehandle */
2055         nfsfh->fh.data.data_len = res->LOOKUP3res_u.resok.object.data.data_len;
2056         nfsfh->fh.data.data_val = malloc(nfsfh->fh.data.data_len);
2057         memcpy(nfsfh->fh.data.data_val, res->LOOKUP3res_u.resok.object.data.data_val, nfsfh->fh.data.data_len);
2058
2059         data->cb(0, nfs, nfsfh, data->private_data);
2060         free_nfs_cb_data(data);
2061 }
2062
2063
2064
2065 static void nfs_creat_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2066 {
2067         CREATE3res *res;
2068         struct nfs_cb_data *data = private_data;
2069         struct nfs_context *nfs = data->nfs;
2070         char *str = data->continue_data;
2071         LOOKUP3args args;
2072
2073         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2074
2075         if (status == RPC_STATUS_ERROR) {
2076                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2077                 free_nfs_cb_data(data);
2078                 return;
2079         }
2080         if (status == RPC_STATUS_CANCEL) {
2081                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2082                 free_nfs_cb_data(data);
2083                 return;
2084         }
2085
2086         str = &str[strlen(str) + 1];
2087         res = command_data;
2088         if (res->status != NFS3_OK) {
2089                 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));
2090                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2091                 free_nfs_cb_data(data);
2092                 return;
2093         }
2094
2095         memset(&args, 0, sizeof(LOOKUP3args));
2096         args.what.dir = data->fh;
2097         args.what.name = str;
2098
2099         if (rpc_nfs3_lookup_async(nfs->rpc, nfs_create_2_cb, &args, data) != 0) {
2100                 rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s/%s", data->saved_path, str);
2101                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2102                 free_nfs_cb_data(data);
2103                 return;
2104         }
2105         return;
2106 }
2107
2108 static int nfs_creat_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2109 {
2110         char *str = data->continue_data;
2111         CREATE3args args;
2112
2113         str = &str[strlen(str) + 1];
2114
2115         memset(&args, 0, sizeof(CREATE3args));
2116         args.where.dir = data->fh;
2117         args.where.name = str;
2118         args.how.mode = UNCHECKED;
2119         args.how.createhow3_u.obj_attributes.mode.set_it = 1;
2120         args.how.createhow3_u.obj_attributes.mode.set_mode3_u.mode = data->continue_int;
2121
2122         if (rpc_nfs3_create_async(nfs->rpc, nfs_creat_1_cb, &args, data) != 0) {
2123                 rpc_set_error(nfs->rpc, "RPC error: Failed to send CREATE call for %s/%s", data->path, str);
2124                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2125                 free_nfs_cb_data(data);
2126                 return -1;
2127         }
2128         return 0;
2129 }
2130
2131 int nfs_creat_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
2132 {
2133         char *new_path;
2134         char *ptr;
2135
2136         new_path = strdup(path);
2137         if (new_path == NULL) {
2138                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2139                 return -1;
2140         }
2141
2142         ptr = strrchr(new_path, '/');
2143         if (ptr == NULL) {
2144                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2145                 return -1;
2146         }
2147         *ptr = 0;
2148
2149         /* new_path now points to the parent directory,  and beyond the nul terminator is the new directory to create */
2150         if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_creat_continue_internal, new_path, free, mode) != 0) {
2151                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2152                 return -1;
2153         }
2154
2155         return 0;
2156 }
2157
2158
2159
2160
2161 /*
2162  * Async unlink()
2163  */
2164 static void nfs_unlink_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2165 {
2166         REMOVE3res *res;
2167         struct nfs_cb_data *data = private_data;
2168         struct nfs_context *nfs = data->nfs;
2169         char *str = data->continue_data;
2170
2171         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2172
2173         str = &str[strlen(str) + 1];
2174
2175         if (status == RPC_STATUS_ERROR) {
2176                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2177                 free_nfs_cb_data(data);
2178                 return;
2179         }
2180         if (status == RPC_STATUS_CANCEL) {
2181                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2182                 free_nfs_cb_data(data);
2183                 return;
2184         }
2185
2186         res = command_data;
2187         if (res->status != NFS3_OK) {
2188                 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));
2189                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2190                 free_nfs_cb_data(data);
2191                 return;
2192         }
2193
2194         data->cb(0, nfs, NULL, data->private_data);
2195         free_nfs_cb_data(data);
2196 }
2197
2198 static int nfs_unlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2199 {
2200         char *str = data->continue_data;
2201         struct REMOVE3args args;
2202
2203         str = &str[strlen(str) + 1];
2204
2205         args.object.dir = data->fh;
2206         args.object.name = str;
2207         if (rpc_nfs3_remove_async(nfs->rpc, nfs_unlink_cb, &args, data) != 0) {
2208                 rpc_set_error(nfs->rpc, "RPC error: Failed to send REMOVE call for %s", data->path);
2209                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2210                 free_nfs_cb_data(data);
2211                 return -1;
2212         }
2213         return 0;
2214 }
2215
2216 int nfs_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2217 {
2218         char *new_path;
2219         char *ptr;
2220
2221         new_path = strdup(path);
2222         if (new_path == NULL) {
2223                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2224                 return -1;
2225         }
2226
2227         ptr = strrchr(new_path, '/');
2228         if (ptr == NULL) {
2229                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2230                 return -1;
2231         }
2232         *ptr = 0;
2233
2234         /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
2235         if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_unlink_continue_internal, new_path, free, 0) != 0) {
2236                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2237                 return -1;
2238         }
2239
2240         return 0;
2241 }
2242
2243
2244 /*
2245  * Async mknod()
2246  */
2247 struct mknod_cb_data {
2248        char *path;
2249        int mode;
2250        int major;
2251        int minor;
2252 };
2253
2254 static void free_mknod_cb_data(void *ptr)
2255 {
2256         struct mknod_cb_data *data = ptr;
2257
2258         free(data->path);
2259         free(data);
2260 }
2261
2262 static void nfs_mknod_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2263 {
2264         MKNOD3res *res;
2265         struct nfs_cb_data *data = private_data;
2266         struct nfs_context *nfs = data->nfs;
2267         char *str = data->continue_data;
2268
2269         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2270
2271         str = &str[strlen(str) + 1];
2272
2273         if (status == RPC_STATUS_ERROR) {
2274                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2275                 free_nfs_cb_data(data);
2276                 return;
2277         }
2278         if (status == RPC_STATUS_CANCEL) {
2279                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2280                 free_nfs_cb_data(data);
2281                 return;
2282         }
2283
2284         res = command_data;
2285         if (res->status != NFS3_OK) {
2286                 rpc_set_error(nfs->rpc, "NFS: MKNOD of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2287                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2288                 free_nfs_cb_data(data);
2289                 return;
2290         }
2291
2292         data->cb(0, nfs, NULL, data->private_data);
2293         free_nfs_cb_data(data);
2294 }
2295
2296 static int nfs_mknod_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2297 {
2298         struct mknod_cb_data *cb_data = data->continue_data;
2299         char *str = cb_data->path;
2300         MKNOD3args args;
2301
2302         str = &str[strlen(str) + 1];
2303
2304         args.where.dir = data->fh;
2305         args.where.name = str;
2306         switch (cb_data->mode & S_IFMT) {
2307         case S_IFCHR:
2308                 args.what.type = NF3CHR;
2309                 args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_it = 1;
2310                 args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2311                 args.what.mknoddata3_u.chr_device.spec.specdata1 = cb_data->major;
2312                 args.what.mknoddata3_u.chr_device.spec.specdata2 = cb_data->minor;
2313                 break;
2314         case S_IFBLK:
2315                 args.what.type = NF3BLK;
2316                 args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_it = 1;
2317                 args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2318                 args.what.mknoddata3_u.blk_device.spec.specdata1 = cb_data->major;
2319                 args.what.mknoddata3_u.blk_device.spec.specdata2 = cb_data->minor;
2320         case S_IFSOCK:
2321                 args.what.type = NF3SOCK;
2322                 args.what.mknoddata3_u.sock_attributes.mode.set_it = 1;
2323                 args.what.mknoddata3_u.sock_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2324                 break;
2325         case S_IFIFO:
2326                 args.what.type = NF3FIFO;
2327                 args.what.mknoddata3_u.pipe_attributes.mode.set_it = 1;
2328                 args.what.mknoddata3_u.pipe_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
2329                 break;
2330         default:
2331                 rpc_set_error(nfs->rpc, "Invalid file type for NFS3/MKNOD call");
2332                 data->cb(-EINVAL, nfs, rpc_get_error(nfs->rpc), data->private_data);
2333                 free_nfs_cb_data(data);
2334                 return -1;
2335         }
2336
2337         if (rpc_nfs3_mknod_async(nfs->rpc, nfs_mknod_cb, &args, data) != 0) {
2338                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2339                 free_nfs_cb_data(data);
2340                 return -1;
2341         }
2342         return 0;
2343 }
2344
2345 int nfs_mknod_async(struct nfs_context *nfs, const char *path, int mode, int dev, nfs_cb cb, void *private_data)
2346 {
2347         char *ptr;
2348         struct mknod_cb_data *cb_data;
2349
2350         cb_data = malloc(sizeof(struct mknod_cb_data));
2351         if (cb_data == NULL) {
2352                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for cb data");
2353                 return -1;
2354         }
2355
2356         cb_data->path = strdup(path);
2357         if (cb_data->path == NULL) {
2358                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2359                 free(cb_data);
2360                 return -1;
2361         }
2362
2363         ptr = strrchr(cb_data->path, '/');
2364         if (ptr == NULL) {
2365                 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2366                 return -1;
2367         }
2368         *ptr = 0;
2369
2370         cb_data->mode = mode;
2371         cb_data->major = major(dev);
2372         cb_data->minor = minor(dev);
2373
2374         /* data->path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
2375         if (nfs_lookuppath_async(nfs, cb_data->path, cb, private_data, nfs_mknod_continue_internal, cb_data, free_mknod_cb_data, 0) != 0) {
2376                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2377                 free_mknod_cb_data(cb_data);
2378                 return -1;
2379         }
2380
2381         return 0;
2382 }
2383
2384 /*
2385  * Async opendir()
2386  */
2387
2388 /* ReadDirPlus Emulation Callback data */
2389 struct rdpe_cb_data {
2390         int getattrcount;
2391         int status;
2392         struct nfs_cb_data *data;
2393 };
2394
2395 /* ReadDirPlus Emulation LOOKUP Callback data */
2396 struct rdpe_lookup_cb_data {
2397         struct rdpe_cb_data *rdpe_cb_data;
2398         struct nfsdirent *nfsdirent;
2399 };
2400
2401 /* Workaround for servers lacking READDIRPLUS, use READDIR instead and a GETATTR-loop */
2402 static void nfs_opendir3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2403 {
2404         LOOKUP3res *res = command_data;
2405         struct rdpe_lookup_cb_data *rdpe_lookup_cb_data = private_data;
2406         struct rdpe_cb_data *rdpe_cb_data = rdpe_lookup_cb_data->rdpe_cb_data;
2407         struct nfs_cb_data *data = rdpe_cb_data->data;
2408         struct nfsdir *nfsdir = data->continue_data;
2409         struct nfs_context *nfs = data->nfs;
2410         struct nfsdirent *nfsdirent = rdpe_lookup_cb_data->nfsdirent;
2411
2412         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2413
2414         free(rdpe_lookup_cb_data);
2415
2416         rdpe_cb_data->getattrcount--;
2417
2418         if (status == RPC_STATUS_ERROR) {
2419                 rdpe_cb_data->status = RPC_STATUS_ERROR;
2420         }
2421         if (status == RPC_STATUS_CANCEL) {
2422                 rdpe_cb_data->status = RPC_STATUS_CANCEL;
2423         }
2424         if (status == RPC_STATUS_SUCCESS && res->status != NFS3_OK) {
2425                 rdpe_cb_data->status = RPC_STATUS_ERROR;
2426         }
2427         if (status == RPC_STATUS_SUCCESS && res->status == NFS3_OK) {
2428                 if (res->LOOKUP3res_u.resok.obj_attributes.attributes_follow) {
2429                         fattr3 *attributes = &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes;
2430
2431                         nfsdirent->type = attributes->type;
2432                         nfsdirent->mode = attributes->mode;
2433                         nfsdirent->size = attributes->size;
2434
2435                         nfsdirent->atime.tv_sec  = attributes->atime.seconds;
2436                         nfsdirent->atime.tv_usec = attributes->atime.nseconds/1000;
2437                         nfsdirent->mtime.tv_sec  = attributes->mtime.seconds;
2438                         nfsdirent->mtime.tv_usec = attributes->mtime.nseconds/1000;
2439                         nfsdirent->ctime.tv_sec  = attributes->ctime.seconds;
2440                         nfsdirent->ctime.tv_usec = attributes->ctime.nseconds/1000;
2441                         nfsdirent->uid = attributes->uid;
2442                         nfsdirent->gid = attributes->gid;
2443                 }
2444         }
2445
2446         if (rdpe_cb_data->getattrcount == 0) {
2447                 if (rdpe_cb_data->status != RPC_STATUS_SUCCESS) {
2448                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2449                         nfs_free_nfsdir(nfsdir);
2450                 } else {
2451                         data->cb(0, nfs, nfsdir, data->private_data);
2452                 }
2453                 free(rdpe_cb_data);
2454
2455                 data->continue_data = NULL;
2456                 free_nfs_cb_data(data);
2457         }
2458 }
2459
2460 static void nfs_opendir2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2461 {
2462         READDIR3res *res = command_data;
2463         struct nfs_cb_data *data = private_data;
2464         struct nfs_context *nfs = data->nfs;
2465         struct nfsdir *nfsdir = data->continue_data;
2466         struct nfsdirent *nfsdirent;
2467         struct entry3 *entry;
2468         uint64_t cookie;
2469         struct rdpe_cb_data *rdpe_cb_data;
2470
2471         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2472
2473         if (status == RPC_STATUS_ERROR) {
2474                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2475                 nfs_free_nfsdir(nfsdir);
2476                 data->continue_data = NULL;
2477                 free_nfs_cb_data(data);
2478                 return;
2479         }
2480
2481         if (status == RPC_STATUS_CANCEL) {
2482                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2483                 nfs_free_nfsdir(nfsdir);
2484                 data->continue_data = NULL;
2485                 free_nfs_cb_data(data);
2486                 return;
2487         }
2488
2489         if (res->status != NFS3_OK) {
2490                 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));
2491                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2492                 nfs_free_nfsdir(nfsdir);
2493                 data->continue_data = NULL;
2494                 free_nfs_cb_data(data);
2495                 return;
2496         }
2497
2498         entry =res->READDIR3res_u.resok.reply.entries;
2499         while (entry != NULL) {
2500                 nfsdirent = malloc(sizeof(struct nfsdirent));
2501                 if (nfsdirent == NULL) {
2502                         data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
2503                         nfs_free_nfsdir(nfsdir);
2504                         data->continue_data = NULL;
2505                         free_nfs_cb_data(data);
2506                         return;
2507                 }
2508                 memset(nfsdirent, 0, sizeof(struct nfsdirent));
2509                 nfsdirent->name = strdup(entry->name);
2510                 if (nfsdirent->name == NULL) {
2511                         data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
2512                         nfs_free_nfsdir(nfsdir);
2513                         data->continue_data = NULL;
2514                         free_nfs_cb_data(data);
2515                         return;
2516                 }
2517                 nfsdirent->inode = entry->fileid;
2518
2519                 nfsdirent->next  = nfsdir->entries;
2520                 nfsdir->entries  = nfsdirent;
2521
2522                 cookie = entry->cookie;
2523                 entry  = entry->nextentry;
2524         }
2525
2526         if (res->READDIR3res_u.resok.reply.eof == 0) {
2527                 READDIR3args args;
2528
2529                 args.dir = data->fh;
2530                 args.cookie = cookie;
2531                 memcpy(&args.cookieverf, res->READDIR3res_u.resok.cookieverf, sizeof(cookieverf3));
2532                 args.count = 8192;
2533
2534                 if (rpc_nfs3_readdir_async(nfs->rpc, nfs_opendir2_cb, &args, data) != 0) {
2535                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
2536                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2537                         nfs_free_nfsdir(nfsdir);
2538                         data->continue_data = NULL;
2539                         free_nfs_cb_data(data);
2540                         return;
2541                 }
2542                 return;
2543         }
2544
2545         /* steal the dirhandle */
2546         nfsdir->current = nfsdir->entries;
2547
2548         rdpe_cb_data = malloc(sizeof(struct rdpe_cb_data));
2549         rdpe_cb_data->getattrcount = 0;
2550         rdpe_cb_data->status = RPC_STATUS_SUCCESS;
2551         rdpe_cb_data->data = data;
2552         for (nfsdirent = nfsdir->entries; nfsdirent; nfsdirent = nfsdirent->next) {
2553                 struct rdpe_lookup_cb_data *rdpe_lookup_cb_data;
2554                 LOOKUP3args args;
2555
2556                 rdpe_lookup_cb_data = malloc(sizeof(struct rdpe_lookup_cb_data));
2557                 rdpe_lookup_cb_data->rdpe_cb_data = rdpe_cb_data;
2558                 rdpe_lookup_cb_data->nfsdirent = nfsdirent;
2559
2560                 memset(&args, 0, sizeof(LOOKUP3args));
2561                 args.what.dir = data->fh;
2562                 args.what.name = nfsdirent->name;
2563
2564                 if (rpc_nfs3_lookup_async(nfs->rpc, nfs_opendir3_cb, &args, rdpe_lookup_cb_data) != 0) {
2565                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR LOOKUP call");
2566
2567                         /* if we have already commands in flight, we cant just stop, we have to wait for the
2568                          * commands in flight to complete
2569                          */
2570                         if (rdpe_cb_data->getattrcount > 0) {
2571                                 rdpe_cb_data->status = RPC_STATUS_ERROR;
2572                                 free(rdpe_lookup_cb_data);
2573                                 return;
2574                         }
2575
2576                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2577                         nfs_free_nfsdir(nfsdir);
2578                         data->continue_data = NULL;
2579                         free_nfs_cb_data(data);
2580                         free(rdpe_lookup_cb_data);
2581                         free(rdpe_cb_data);
2582                         return;
2583                 }
2584                 rdpe_cb_data->getattrcount++;
2585         }
2586 }
2587
2588
2589 static void nfs_opendir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2590 {
2591         READDIRPLUS3res *res = command_data;
2592         struct nfs_cb_data *data = private_data;
2593         struct nfs_context *nfs = data->nfs;
2594         struct nfsdir *nfsdir = data->continue_data;
2595         struct entryplus3 *entry;
2596         uint64_t cookie;
2597
2598         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2599
2600         if (status == RPC_STATUS_ERROR || (status == RPC_STATUS_SUCCESS && res->status == NFS3ERR_NOTSUPP) ){
2601                 READDIR3args args;
2602
2603                 args.dir = data->fh;
2604                 args.cookie = cookie;
2605                 memset(&args.cookieverf, 0, sizeof(cookieverf3));
2606                 args.count = 8192;
2607
2608                 if (rpc_nfs3_readdir_async(nfs->rpc, nfs_opendir2_cb, &args, data) != 0) {
2609                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
2610                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2611                         nfs_free_nfsdir(nfsdir);
2612                         data->continue_data = NULL;
2613                         free_nfs_cb_data(data);
2614                         return;
2615                 }
2616                 return;
2617         }
2618
2619         if (status == RPC_STATUS_CANCEL) {
2620                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2621                 nfs_free_nfsdir(nfsdir);
2622                 data->continue_data = NULL;
2623                 free_nfs_cb_data(data);
2624                 return;
2625         }
2626
2627         if (res->status != NFS3_OK) {
2628                 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));
2629                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2630                 nfs_free_nfsdir(nfsdir);
2631                 data->continue_data = NULL;
2632                 free_nfs_cb_data(data);
2633                 return;
2634         }
2635
2636         entry =res->READDIRPLUS3res_u.resok.reply.entries;
2637         while (entry != NULL) {
2638                 struct nfsdirent *nfsdirent;
2639
2640                 nfsdirent = malloc(sizeof(struct nfsdirent));
2641                 if (nfsdirent == NULL) {
2642                         data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
2643                         nfs_free_nfsdir(nfsdir);
2644                         data->continue_data = NULL;
2645                         free_nfs_cb_data(data);
2646                         return;
2647                 }
2648                 memset(nfsdirent, 0, sizeof(struct nfsdirent));
2649                 nfsdirent->name = strdup(entry->name);
2650                 if (nfsdirent->name == NULL) {
2651                         data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
2652                         nfs_free_nfsdir(nfsdir);
2653                         data->continue_data = NULL;
2654                         free_nfs_cb_data(data);
2655                         return;
2656                 }
2657                 nfsdirent->inode = entry->fileid;
2658                 if (entry->name_attributes.attributes_follow) {
2659                         nfsdirent->type = entry->name_attributes.post_op_attr_u.attributes.type;
2660                         nfsdirent->mode = entry->name_attributes.post_op_attr_u.attributes.mode;
2661                         nfsdirent->size = entry->name_attributes.post_op_attr_u.attributes.size;
2662
2663                         nfsdirent->atime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.atime.seconds;
2664                         nfsdirent->atime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.atime.nseconds/1000;
2665                         nfsdirent->mtime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.mtime.seconds;
2666                         nfsdirent->mtime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.mtime.nseconds/1000;
2667                         nfsdirent->ctime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.ctime.seconds;
2668                         nfsdirent->ctime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.ctime.nseconds/1000;
2669                         nfsdirent->uid = entry->name_attributes.post_op_attr_u.attributes.uid;
2670                         nfsdirent->gid = entry->name_attributes.post_op_attr_u.attributes.gid;
2671                 }
2672
2673                 nfsdirent->next  = nfsdir->entries;
2674                 nfsdir->entries  = nfsdirent;
2675
2676                 cookie = entry->cookie;
2677                 entry  = entry->nextentry;
2678         }
2679
2680         if (res->READDIRPLUS3res_u.resok.reply.eof == 0) {
2681                 READDIRPLUS3args args;
2682
2683                 args.dir = data->fh;
2684                 args.cookie = cookie;
2685                 memcpy(&args.cookieverf, res->READDIRPLUS3res_u.resok.cookieverf, sizeof(cookieverf3));
2686                 args.dircount = 8192;
2687                 args.maxcount = 8192;
2688
2689                 if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs_opendir_cb, &args, data) != 0) {
2690                         rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
2691                         data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2692                         nfs_free_nfsdir(nfsdir);
2693                         data->continue_data = NULL;
2694                         free_nfs_cb_data(data);
2695                         return;
2696                 }
2697                 return;
2698         }
2699
2700         /* steal the dirhandle */
2701         data->continue_data = NULL;
2702         nfsdir->current = nfsdir->entries;
2703
2704         data->cb(0, nfs, nfsdir, data->private_data);
2705         free_nfs_cb_data(data);
2706 }
2707
2708 static int nfs_opendir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2709 {
2710         READDIRPLUS3args args;
2711
2712         args.dir = data->fh;
2713         args.cookie = 0;
2714         memset(&args.cookieverf, 0, sizeof(cookieverf3));
2715         args.dircount = 8192;
2716         args.maxcount = 8192;
2717         if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs_opendir_cb, &args, data) != 0) {
2718                 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
2719                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2720                 free_nfs_cb_data(data);
2721                 return -1;
2722         }
2723         return 0;
2724 }
2725
2726 int nfs_opendir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2727 {
2728         struct nfsdir *nfsdir;
2729
2730         nfsdir = malloc(sizeof(struct nfsdir));
2731         if (nfsdir == NULL) {
2732                 rpc_set_error(nfs->rpc, "failed to allocate buffer for nfsdir");
2733                 return -1;
2734         }
2735         memset(nfsdir, 0, sizeof(struct nfsdir));
2736
2737         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_opendir_continue_internal, nfsdir, free, 0) != 0) {
2738                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2739                 return -1;
2740         }
2741
2742         return 0;
2743 }
2744
2745
2746 struct nfsdirent *nfs_readdir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir)
2747 {
2748         struct nfsdirent *nfsdirent = nfsdir->current;
2749
2750         if (nfsdir->current != NULL) {
2751                 nfsdir->current = nfsdir->current->next;
2752         }
2753         return nfsdirent;
2754 }
2755
2756
2757 void nfs_closedir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir)
2758 {
2759         nfs_free_nfsdir(nfsdir);
2760 }
2761
2762
2763
2764
2765
2766
2767
2768 /*
2769  * Async lseek()
2770  */
2771 struct lseek_cb_data {
2772        struct nfs_context *nfs;
2773        struct nfsfh *nfsfh;
2774        uint64_t offset;
2775        nfs_cb cb;
2776        void *private_data;
2777 };
2778
2779 static void nfs_lseek_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2780 {
2781         GETATTR3res *res;
2782         struct lseek_cb_data *data = private_data;
2783         struct nfs_context *nfs = data->nfs;
2784
2785         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2786
2787         if (status == RPC_STATUS_ERROR) {
2788                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2789                 free(data);
2790                 return;
2791         }
2792         if (status == RPC_STATUS_CANCEL) {
2793                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2794                 free(data);
2795                 return;
2796         }
2797
2798         res = command_data;
2799         if (res->status != NFS3_OK) {
2800                 rpc_set_error(nfs->rpc, "NFS: GETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2801                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2802                 free(data);
2803                 return;
2804         }
2805
2806         data->nfsfh->offset = data->offset + res->GETATTR3res_u.resok.obj_attributes.size;
2807         data->cb(0, nfs, &data->nfsfh->offset, data->private_data);
2808         free(data);
2809 }
2810
2811 int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, int whence, nfs_cb cb, void *private_data)
2812 {
2813         struct lseek_cb_data *data;
2814         struct GETATTR3args args;
2815
2816         if (whence == SEEK_SET) {
2817                 nfsfh->offset = offset;
2818                 cb(0, nfs, &nfsfh->offset, private_data);
2819                 return 0;
2820         }
2821         if (whence == SEEK_CUR) {
2822                 nfsfh->offset += offset;
2823                 cb(0, nfs, &nfsfh->offset, private_data);
2824                 return 0;
2825         }
2826
2827         data = malloc(sizeof(struct lseek_cb_data));
2828         if (data == NULL) {
2829                 rpc_set_error(nfs->rpc, "Out Of Memory: Failed to malloc lseek cb data");
2830                 return -1;
2831         }
2832
2833         data->nfs          = nfs;
2834         data->nfsfh        = nfsfh;
2835         data->offset       = offset;
2836         data->cb           = cb;
2837         data->private_data = private_data;
2838
2839         memset(&args, 0, sizeof(GETATTR3args));
2840         args.object = nfsfh->fh;
2841
2842         if (rpc_nfs3_getattr_async(nfs->rpc, nfs_lseek_1_cb, &args, data) != 0) {
2843                 rpc_set_error(nfs->rpc, "RPC error: Failed to send LSEEK GETATTR call");
2844                 free(data);
2845                 return -1;
2846         }
2847         return 0;
2848 }
2849
2850
2851
2852
2853 /*
2854  * Async statvfs()
2855  */
2856 static void nfs_statvfs_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2857 {
2858         FSSTAT3res *res;
2859         struct nfs_cb_data *data = private_data;
2860         struct nfs_context *nfs = data->nfs;
2861         struct statvfs svfs;
2862
2863         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2864
2865         if (status == RPC_STATUS_ERROR) {
2866                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2867                 free_nfs_cb_data(data);
2868                 return;
2869         }
2870         if (status == RPC_STATUS_CANCEL) {
2871                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2872                 free_nfs_cb_data(data);
2873                 return;
2874         }
2875
2876         res = command_data;
2877         if (res->status != NFS3_OK) {
2878                 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));
2879                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2880                 free_nfs_cb_data(data);
2881                 return;
2882         }
2883
2884         svfs.f_bsize   = 4096;
2885         svfs.f_frsize  = 4096;
2886         svfs.f_blocks  = res->FSSTAT3res_u.resok.tbytes/4096;
2887         svfs.f_bfree   = res->FSSTAT3res_u.resok.fbytes/4096;
2888         svfs.f_bavail  = res->FSSTAT3res_u.resok.abytes/4096;
2889         svfs.f_files   = res->FSSTAT3res_u.resok.tfiles;
2890         svfs.f_ffree   = res->FSSTAT3res_u.resok.ffiles;
2891 #if !defined(ANDROID)
2892         svfs.f_favail  = res->FSSTAT3res_u.resok.afiles;
2893         svfs.f_fsid    = 0;
2894         svfs.f_flag    = 0;
2895         svfs.f_namemax = 256;
2896 #endif
2897
2898         data->cb(0, nfs, &svfs, data->private_data);
2899         free_nfs_cb_data(data);
2900 }
2901
2902 static int nfs_statvfs_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2903 {
2904         FSSTAT3args args;
2905
2906         args.fsroot = data->fh;
2907         if (rpc_nfs3_fsstat_async(nfs->rpc, nfs_statvfs_1_cb, &args, data) != 0) {
2908                 rpc_set_error(nfs->rpc, "RPC error: Failed to send FSSTAT call for %s", data->path);
2909                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2910                 free_nfs_cb_data(data);
2911                 return -1;
2912         }
2913         return 0;
2914 }
2915
2916 int nfs_statvfs_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2917 {
2918         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_statvfs_continue_internal, NULL, NULL, 0) != 0) {
2919                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2920                 return -1;
2921         }
2922
2923         return 0;
2924 }
2925
2926
2927
2928
2929 /*
2930  * Async readlink()
2931  */
2932 static void nfs_readlink_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2933 {
2934         READLINK3res *res;
2935         struct nfs_cb_data *data = private_data;
2936         struct nfs_context *nfs = data->nfs;
2937
2938         assert(rpc->magic == RPC_CONTEXT_MAGIC);
2939
2940         if (status == RPC_STATUS_ERROR) {
2941                 data->cb(-EFAULT, nfs, command_data, data->private_data);
2942                 free_nfs_cb_data(data);
2943                 return;
2944         }
2945         if (status == RPC_STATUS_CANCEL) {
2946                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2947                 free_nfs_cb_data(data);
2948                 return;
2949         }
2950
2951         res = command_data;
2952         if (res->status != NFS3_OK) {
2953                 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));
2954                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2955                 free_nfs_cb_data(data);
2956                 return;
2957         }
2958
2959
2960         data->cb(0, nfs, res->READLINK3res_u.resok.data, data->private_data);
2961         free_nfs_cb_data(data);
2962 }
2963
2964 static int nfs_readlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
2965 {
2966         READLINK3args args;
2967
2968         args.symlink = data->fh;
2969
2970         if (rpc_nfs3_readlink_async(nfs->rpc, nfs_readlink_1_cb, &args, data) != 0) {
2971                 rpc_set_error(nfs->rpc, "RPC error: Failed to send READLINK call for %s", data->path);
2972                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2973                 free_nfs_cb_data(data);
2974                 return -1;
2975         }
2976         return 0;
2977 }
2978
2979 int nfs_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2980 {
2981         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_readlink_continue_internal, NULL, NULL, 0) != 0) {
2982                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2983                 return -1;
2984         }
2985
2986         return 0;
2987 }
2988
2989
2990
2991
2992 /*
2993  * Async chmod()
2994  */
2995 static void nfs_chmod_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2996 {
2997         struct nfs_cb_data *data = private_data;
2998         struct nfs_context *nfs = data->nfs;
2999         SETATTR3res *res;
3000
3001         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3002
3003         if (status == RPC_STATUS_ERROR) {
3004                 data->cb(-EFAULT, nfs, command_data, data->private_data);
3005                 free_nfs_cb_data(data);
3006                 return;
3007         }
3008         if (status == RPC_STATUS_CANCEL) {
3009                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3010                 free_nfs_cb_data(data);
3011                 return;
3012         }
3013
3014         res = command_data;
3015         if (res->status != NFS3_OK) {
3016                 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3017                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3018                 free_nfs_cb_data(data);
3019                 return;
3020         }
3021
3022         data->cb(0, nfs, NULL, data->private_data);
3023         free_nfs_cb_data(data);
3024 }
3025
3026 static int nfs_chmod_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3027 {
3028         SETATTR3args args;
3029
3030         memset(&args, 0, sizeof(SETATTR3args));
3031         args.object = data->fh;
3032         args.new_attributes.mode.set_it = 1;
3033         args.new_attributes.mode.set_mode3_u.mode = data->continue_int;
3034
3035         if (rpc_nfs3_setattr_async(nfs->rpc, nfs_chmod_cb, &args, data) != 0) {
3036                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
3037                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3038                 free_nfs_cb_data(data);
3039                 return -1;
3040         }
3041         return 0;
3042 }
3043
3044
3045 int nfs_chmod_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
3046 {
3047         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_chmod_continue_internal, NULL, NULL, mode) != 0) {
3048                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3049                 return -1;
3050         }
3051
3052         return 0;
3053 }
3054
3055 /*
3056  * Async fchmod()
3057  */
3058 int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs_cb cb, void *private_data)
3059 {
3060         struct nfs_cb_data *data;
3061
3062         data = malloc(sizeof(struct nfs_cb_data));
3063         if (data == NULL) {
3064                 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
3065                 return -1;
3066         }
3067         memset(data, 0, sizeof(struct nfs_cb_data));
3068         data->nfs          = nfs;
3069         data->cb           = cb;
3070         data->private_data = private_data;
3071         data->continue_int = mode;
3072         data->fh.data.data_len = nfsfh->fh.data.data_len;
3073         data->fh.data.data_val = malloc(data->fh.data.data_len);
3074         if (data->fh.data.data_val == NULL) {
3075                 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh");
3076                 free_nfs_cb_data(data);
3077                 return -1;
3078         }
3079         memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
3080
3081         if (nfs_chmod_continue_internal(nfs, data) != 0) {
3082                 free_nfs_cb_data(data);
3083                 return -1;
3084         }
3085
3086         return 0;
3087 }
3088
3089
3090
3091 /*
3092  * Async chown()
3093  */
3094 static void nfs_chown_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3095 {
3096         struct nfs_cb_data *data = private_data;
3097         struct nfs_context *nfs = data->nfs;
3098         SETATTR3res *res;
3099
3100         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3101
3102         if (status == RPC_STATUS_ERROR) {
3103                 data->cb(-EFAULT, nfs, command_data, data->private_data);
3104                 free_nfs_cb_data(data);
3105                 return;
3106         }
3107         if (status == RPC_STATUS_CANCEL) {
3108                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3109                 free_nfs_cb_data(data);
3110                 return;
3111         }
3112
3113         res = command_data;
3114         if (res->status != NFS3_OK) {
3115                 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3116                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3117                 free_nfs_cb_data(data);
3118                 return;
3119         }
3120
3121         data->cb(0, nfs, NULL, data->private_data);
3122         free_nfs_cb_data(data);
3123 }
3124
3125 struct nfs_chown_data {
3126        uid_t uid;
3127        gid_t gid;
3128 };
3129
3130 static int nfs_chown_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3131 {
3132         SETATTR3args args;
3133         struct nfs_chown_data *chown_data = data->continue_data;
3134
3135         memset(&args, 0, sizeof(SETATTR3args));
3136         args.object = data->fh;
3137         if (chown_data->uid != (uid_t)-1) {
3138                 args.new_attributes.uid.set_it = 1;
3139                 args.new_attributes.uid.set_uid3_u.uid = chown_data->uid;
3140         }
3141         if (chown_data->gid != (gid_t)-1) {
3142                 args.new_attributes.gid.set_it = 1;
3143                 args.new_attributes.gid.set_gid3_u.gid = chown_data->gid;
3144         }
3145
3146         if (rpc_nfs3_setattr_async(nfs->rpc, nfs_chown_cb, &args, data) != 0) {
3147                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
3148                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3149                 free_nfs_cb_data(data);
3150                 return -1;
3151         }
3152         return 0;
3153 }
3154
3155
3156 int nfs_chown_async(struct nfs_context *nfs, const char *path, int uid, int gid, nfs_cb cb, void *private_data)
3157 {
3158         struct nfs_chown_data *chown_data;
3159
3160         chown_data = malloc(sizeof(struct nfs_chown_data));
3161         if (chown_data == NULL) {
3162                 rpc_set_error(nfs->rpc, "Failed to allocate memory for chown data structure");
3163                 return -1;
3164         }
3165
3166         chown_data->uid = uid;
3167         chown_data->gid = gid;
3168
3169         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_chown_continue_internal, chown_data, free, 0) != 0) {
3170                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3171                 return -1;
3172         }
3173
3174         return 0;
3175 }
3176
3177
3178 /*
3179  * Async fchown()
3180  */
3181 int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid, nfs_cb cb, void *private_data)
3182 {
3183         struct nfs_cb_data *data;
3184         struct nfs_chown_data *chown_data;
3185
3186         chown_data = malloc(sizeof(struct nfs_chown_data));
3187         if (chown_data == NULL) {
3188                 rpc_set_error(nfs->rpc, "Failed to allocate memory for chown data structure");
3189                 return -1;
3190         }
3191
3192         chown_data->uid = uid;
3193         chown_data->gid = gid;
3194
3195
3196         data = malloc(sizeof(struct nfs_cb_data));
3197         if (data == NULL) {
3198                 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for fchown data");
3199                 return -1;
3200         }
3201         memset(data, 0, sizeof(struct nfs_cb_data));
3202         data->nfs           = nfs;
3203         data->cb            = cb;
3204         data->private_data  = private_data;
3205         data->continue_data = chown_data;
3206         data->fh.data.data_len = nfsfh->fh.data.data_len;
3207         data->fh.data.data_val = malloc(data->fh.data.data_len);
3208         if (data->fh.data.data_val == NULL) {
3209                 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh");
3210                 free_nfs_cb_data(data);
3211                 return -1;
3212         }
3213         memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
3214
3215
3216         if (nfs_chown_continue_internal(nfs, data) != 0) {
3217                 free_nfs_cb_data(data);
3218                 return -1;
3219         }
3220
3221         return 0;
3222 }
3223
3224
3225
3226
3227
3228 /*
3229  * Async utimes()
3230  */
3231 static void nfs_utimes_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3232 {
3233         struct nfs_cb_data *data = private_data;
3234         struct nfs_context *nfs = data->nfs;
3235         SETATTR3res *res;
3236
3237         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3238
3239         if (status == RPC_STATUS_ERROR) {
3240                 data->cb(-EFAULT, nfs, command_data, data->private_data);
3241                 free_nfs_cb_data(data);
3242                 return;
3243         }
3244         if (status == RPC_STATUS_CANCEL) {
3245                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3246                 free_nfs_cb_data(data);
3247                 return;
3248         }
3249
3250         res = command_data;
3251         if (res->status != NFS3_OK) {
3252                 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3253                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3254                 free_nfs_cb_data(data);
3255                 return;
3256         }
3257
3258         data->cb(0, nfs, NULL, data->private_data);
3259         free_nfs_cb_data(data);
3260 }
3261
3262 static int nfs_utimes_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3263 {
3264         SETATTR3args args;
3265         struct timeval *utimes_data = data->continue_data;
3266
3267         memset(&args, 0, sizeof(SETATTR3args));
3268         args.object = data->fh;
3269         if (utimes_data != NULL) {
3270                 args.new_attributes.atime.set_it = SET_TO_CLIENT_TIME;
3271                 args.new_attributes.atime.set_atime_u.atime.seconds  = utimes_data[0].tv_sec;
3272                 args.new_attributes.atime.set_atime_u.atime.nseconds = utimes_data[0].tv_usec * 1000;
3273                 args.new_attributes.mtime.set_it = SET_TO_CLIENT_TIME;
3274                 args.new_attributes.mtime.set_mtime_u.mtime.seconds  = utimes_data[1].tv_sec;
3275                 args.new_attributes.mtime.set_mtime_u.mtime.nseconds = utimes_data[1].tv_usec * 1000;
3276         } else {
3277                 args.new_attributes.atime.set_it = SET_TO_SERVER_TIME;
3278                 args.new_attributes.mtime.set_it = SET_TO_SERVER_TIME;
3279         }
3280
3281         if (rpc_nfs3_setattr_async(nfs->rpc, nfs_utimes_cb, &args, data) != 0) {
3282                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
3283                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3284                 free_nfs_cb_data(data);
3285                 return -1;
3286         }
3287         return 0;
3288 }
3289
3290
3291 int nfs_utimes_async(struct nfs_context *nfs, const char *path, struct timeval *times, nfs_cb cb, void *private_data)
3292 {
3293         struct timeval *new_times = NULL;
3294
3295         if (times != NULL) {
3296                 new_times = malloc(sizeof(struct timeval)*2);
3297                 if (new_times == NULL) {
3298                         rpc_set_error(nfs->rpc, "Failed to allocate memory for timeval structure");
3299                         return -1;
3300                 }
3301
3302                 memcpy(new_times, times, sizeof(struct timeval)*2);
3303         }
3304
3305         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_utimes_continue_internal, new_times, free, 0) != 0) {
3306                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3307                 return -1;
3308         }
3309
3310         return 0;
3311 }
3312
3313 /*
3314  * Async utime()
3315  */
3316 int nfs_utime_async(struct nfs_context *nfs, const char *path, struct utimbuf *times, nfs_cb cb, void *private_data)
3317 {
3318         struct timeval *new_times = NULL;
3319
3320         if (times != NULL) {
3321                 new_times = malloc(sizeof(struct timeval)*2);
3322                 if (new_times == NULL) {
3323                         rpc_set_error(nfs->rpc, "Failed to allocate memory for timeval structure");
3324                         return -1;
3325                 }
3326
3327                 new_times[0].tv_sec  = times->actime;
3328                 new_times[0].tv_usec = 0;
3329                 new_times[1].tv_sec  = times->modtime;
3330                 new_times[1].tv_usec = 0;
3331         }
3332
3333         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_utimes_continue_internal, new_times, free, 0) != 0) {
3334                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3335                 return -1;
3336         }
3337
3338         return 0;
3339 }
3340
3341
3342 /*
3343  * Async access()
3344  */
3345 static void nfs_access_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3346 {
3347         ACCESS3res *res;
3348         struct nfs_cb_data *data = private_data;
3349         struct nfs_context *nfs = data->nfs;
3350         unsigned int nfsmode = 0;
3351
3352         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3353
3354         if (status == RPC_STATUS_ERROR) {
3355                 data->cb(-EFAULT, nfs, command_data, data->private_data);
3356                 free_nfs_cb_data(data);
3357                 return;
3358         }
3359         if (status == RPC_STATUS_CANCEL) {
3360                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3361                 free_nfs_cb_data(data);
3362                 return;
3363         }
3364
3365         res = command_data;
3366         if (res->status != NFS3_OK) {
3367                 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));
3368                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3369                 free_nfs_cb_data(data);
3370                 return;
3371         }
3372
3373         if (data->continue_int & R_OK) {
3374                 nfsmode |= ACCESS3_READ;
3375         }
3376         if (data->continue_int & W_OK) {
3377                 nfsmode |= ACCESS3_MODIFY;
3378         }
3379         if (data->continue_int & X_OK) {
3380                 nfsmode |= ACCESS3_EXECUTE;
3381         }
3382
3383         if (res->ACCESS3res_u.resok.access != nfsmode) {
3384                 rpc_set_error(nfs->rpc, "NFS: ACCESS denied. Required access %c%c%c. Allowed access %c%c%c",
3385                                         nfsmode&ACCESS3_READ?'r':'-',
3386                                         nfsmode&ACCESS3_MODIFY?'w':'-',
3387                                         nfsmode&ACCESS3_EXECUTE?'x':'-',
3388                                         res->ACCESS3res_u.resok.access&ACCESS3_READ?'r':'-',
3389                                         res->ACCESS3res_u.resok.access&ACCESS3_MODIFY?'w':'-',
3390                                         res->ACCESS3res_u.resok.access&ACCESS3_EXECUTE?'x':'-');
3391                 data->cb(-EACCES, nfs, rpc_get_error(nfs->rpc), data->private_data);
3392                 free_nfs_cb_data(data);
3393                 return;
3394         }
3395
3396         data->cb(0, nfs, NULL, data->private_data);
3397         free_nfs_cb_data(data);
3398 }
3399
3400 static int nfs_access_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3401 {
3402         int nfsmode = 0;
3403         ACCESS3args args;
3404
3405         if (data->continue_int & R_OK) {
3406                 nfsmode |= ACCESS3_READ;
3407         }
3408         if (data->continue_int & W_OK) {
3409                 nfsmode |= ACCESS3_MODIFY;
3410         }
3411         if (data->continue_int & X_OK) {
3412                 nfsmode |= ACCESS3_EXECUTE;
3413         }
3414
3415         memset(&args, 0, sizeof(ACCESS3args));
3416         args.object = data->fh;
3417         args.access = nfsmode;
3418
3419         if (rpc_nfs3_access_async(nfs->rpc, nfs_access_cb, &args, data) != 0) {
3420                 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
3421                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3422                 free_nfs_cb_data(data);
3423                 return -1;
3424         }
3425         return 0;
3426 }
3427
3428 int nfs_access_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
3429 {
3430         if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_access_continue_internal, NULL, NULL, mode) != 0) {
3431                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3432                 return -1;
3433         }
3434
3435         return 0;
3436 }
3437
3438
3439
3440 /*
3441  * Async symlink()
3442  */
3443 struct nfs_symlink_data {
3444        char *oldpath;
3445        char *newpathparent;
3446        char *newpathobject;
3447 };
3448
3449 static void free_nfs_symlink_data(void *mem)
3450 {
3451         struct nfs_symlink_data *data = mem;
3452
3453         if (data->oldpath != NULL) {
3454                 free(data->oldpath);
3455         }
3456         if (data->newpathparent != NULL) {
3457                 free(data->newpathparent);
3458         }
3459         if (data->newpathobject != NULL) {
3460                 free(data->newpathobject);
3461         }
3462         free(data);
3463 }
3464
3465 static void nfs_symlink_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3466 {
3467         SYMLINK3res *res;
3468         struct nfs_cb_data *data = private_data;
3469         struct nfs_context *nfs = data->nfs;
3470         struct nfs_symlink_data *symlink_data = data->continue_data;
3471
3472         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3473
3474         if (status == RPC_STATUS_ERROR) {
3475                 data->cb(-EFAULT, nfs, command_data, data->private_data);
3476                 free_nfs_cb_data(data);
3477                 return;
3478         }
3479         if (status == RPC_STATUS_CANCEL) {
3480                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3481                 free_nfs_cb_data(data);
3482                 return;
3483         }
3484
3485         res = command_data;
3486         if (res->status != NFS3_OK) {
3487                 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));
3488                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3489                 free_nfs_cb_data(data);
3490                 return;
3491         }
3492
3493         data->cb(0, nfs, NULL, data->private_data);
3494         free_nfs_cb_data(data);
3495 }
3496
3497 static int nfs_symlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3498 {
3499         struct nfs_symlink_data *symlink_data = data->continue_data;
3500         SYMLINK3args args;
3501
3502         memset(&args, 0, sizeof(SYMLINK3args));
3503         args.where.dir = data->fh;
3504         args.where.name = symlink_data->newpathobject;
3505         args.symlink.symlink_attributes.mode.set_it = 1;
3506         args.symlink.symlink_attributes.mode.set_mode3_u.mode = S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH;
3507         args.symlink.symlink_data = symlink_data->oldpath;
3508
3509         if (rpc_nfs3_symlink_async(nfs->rpc, nfs_symlink_cb, &args, data) != 0) {
3510                 rpc_set_error(nfs->rpc, "RPC error: Failed to send SYMLINK call for %s", data->path);
3511                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3512                 free_nfs_cb_data(data);
3513                 return -1;
3514         }
3515         return 0;
3516 }
3517
3518 int nfs_symlink_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
3519 {
3520         char *ptr;
3521         struct nfs_symlink_data *symlink_data;
3522
3523         symlink_data = malloc(sizeof(struct nfs_symlink_data));
3524         if (symlink_data == NULL) {
3525                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for symlink data");
3526                 return -1;
3527         }
3528         memset(symlink_data, 0, sizeof(struct nfs_symlink_data));
3529
3530         symlink_data->oldpath = strdup(oldpath);
3531         if (symlink_data->oldpath == NULL) {
3532                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
3533                 free_nfs_symlink_data(symlink_data);
3534                 return -1;
3535         }
3536
3537         symlink_data->newpathparent = strdup(newpath);
3538         if (symlink_data->newpathparent == NULL) {
3539                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for new path");
3540                 free_nfs_symlink_data(symlink_data);
3541                 return -1;
3542         }
3543
3544         ptr = strrchr(symlink_data->newpathparent, '/');
3545         if (ptr == NULL) {
3546                 rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
3547                 free_nfs_symlink_data(symlink_data);
3548                 return -1;
3549         }
3550         *ptr = 0;
3551         ptr++;
3552
3553         symlink_data->newpathobject = strdup(ptr);
3554         if (symlink_data->newpathobject == NULL) {
3555                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for new path");
3556                 free_nfs_symlink_data(symlink_data);
3557                 return -1;
3558         }
3559
3560         if (nfs_lookuppath_async(nfs, symlink_data->newpathparent, cb, private_data, nfs_symlink_continue_internal, symlink_data, free_nfs_symlink_data, 0) != 0) {
3561                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3562                 return -1;
3563         }
3564
3565         return 0;
3566 }
3567
3568
3569
3570 /*
3571  * Async rename()
3572  */
3573 struct nfs_rename_data {
3574        char *oldpath;
3575        char *oldobject;
3576        struct nfs_fh3 olddir;
3577        char *newpath;
3578        char *newobject;
3579        struct nfs_fh3 newdir;
3580 };
3581
3582 static void free_nfs_rename_data(void *mem)
3583 {
3584         struct nfs_rename_data *data = mem;
3585
3586         if (data->oldpath != NULL) {
3587                 free(data->oldpath);
3588         }
3589         if (data->olddir.data.data_val != NULL) {
3590                 free(data->olddir.data.data_val);
3591         }
3592         if (data->newpath != NULL) {
3593                 free(data->newpath);
3594         }
3595         if (data->newdir.data.data_val != NULL) {
3596                 free(data->newdir.data.data_val);
3597         }
3598         free(data);
3599 }
3600
3601 static void nfs_rename_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3602 {
3603         RENAME3res *res;
3604         struct nfs_cb_data *data = private_data;
3605         struct nfs_context *nfs = data->nfs;
3606         struct nfs_rename_data *rename_data = data->continue_data;
3607
3608         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3609
3610         if (status == RPC_STATUS_ERROR) {
3611                 data->cb(-EFAULT, nfs, command_data, data->private_data);
3612                 free_nfs_cb_data(data);
3613                 return;
3614         }
3615         if (status == RPC_STATUS_CANCEL) {
3616                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3617                 free_nfs_cb_data(data);
3618                 return;
3619         }
3620
3621         res = command_data;
3622         if (res->status != NFS3_OK) {
3623                 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));
3624                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3625                 free_nfs_cb_data(data);
3626                 return;
3627         }
3628
3629         data->cb(0, nfs, NULL, data->private_data);
3630         free_nfs_cb_data(data);
3631 }
3632
3633 static int nfs_rename_continue_2_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3634 {
3635         struct nfs_rename_data *rename_data = data->continue_data;
3636         RENAME3args args;
3637
3638         /* steal the filehandle */
3639         rename_data->newdir = data->fh;
3640         data->fh.data.data_val = NULL;
3641
3642         args.from.dir = rename_data->olddir;
3643         args.from.name = rename_data->oldobject;
3644         args.to.dir = rename_data->newdir;
3645         args.to.name = rename_data->newobject;
3646         if (rpc_nfs3_rename_async(nfs->rpc, nfs_rename_cb, &args, data) != 0) {
3647                 rpc_set_error(nfs->rpc, "RPC error: Failed to send RENAME call for %s", data->path);
3648                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3649                 free_nfs_cb_data(data);
3650                 return -1;
3651         }
3652         return 0;
3653 }
3654
3655
3656 static int nfs_rename_continue_1_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3657 {
3658         struct nfs_rename_data *rename_data = data->continue_data;
3659
3660         /* steal the filehandle */
3661         rename_data->olddir = data->fh;
3662         data->fh.data.data_val = NULL;
3663
3664         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) {
3665                 rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", rename_data->newpath);
3666                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3667                 free_nfs_cb_data(data);
3668                 return -1;
3669         }
3670         data->continue_data = NULL;
3671         free_nfs_cb_data(data);
3672
3673         return 0;
3674 }
3675
3676
3677 int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
3678 {
3679         char *ptr;
3680         struct nfs_rename_data *rename_data;
3681
3682         rename_data = malloc(sizeof(struct nfs_rename_data));
3683         if (rename_data == NULL) {
3684                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for rename data");
3685                 return -1;
3686         }
3687         memset(rename_data, 0, sizeof(struct nfs_rename_data));
3688
3689         rename_data->oldpath = strdup(oldpath);
3690         if (rename_data->oldpath == NULL) {
3691                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
3692                 free_nfs_rename_data(rename_data);
3693                 return -1;
3694         }
3695         ptr = strrchr(rename_data->oldpath, '/');
3696         if (ptr == NULL) {
3697                 rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
3698                 free_nfs_rename_data(rename_data);
3699                 return -1;
3700         }
3701         *ptr = 0;
3702         ptr++;
3703         rename_data->oldobject = ptr;
3704
3705
3706         rename_data->newpath = strdup(newpath);
3707         if (rename_data->newpath == NULL) {
3708                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for newpath");
3709                 free_nfs_rename_data(rename_data);
3710                 return -1;
3711         }
3712         ptr = strrchr(rename_data->newpath, '/');
3713         if (ptr == NULL) {
3714                 rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
3715                 free_nfs_rename_data(rename_data);
3716                 return -1;
3717         }
3718         *ptr = 0;
3719         ptr++;
3720         rename_data->newobject = ptr;
3721
3722
3723         if (nfs_lookuppath_async(nfs, rename_data->oldpath, cb, private_data, nfs_rename_continue_1_internal, rename_data, free_nfs_rename_data, 0) != 0) {
3724                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3725                 return -1;
3726         }
3727
3728         return 0;
3729 }
3730
3731
3732 /*
3733  * Async link()
3734  */
3735 struct nfs_link_data {
3736        char *oldpath;
3737        struct nfs_fh3 oldfh;
3738        char *newpath;
3739        char *newobject;
3740        struct nfs_fh3 newdir;
3741 };
3742
3743 static void free_nfs_link_data(void *mem)
3744 {
3745         struct nfs_link_data *data = mem;
3746
3747         if (data->oldpath != NULL) {
3748                 free(data->oldpath);
3749         }
3750         if (data->oldfh.data.data_val != NULL) {
3751                 free(data->oldfh.data.data_val);
3752         }
3753         if (data->newpath != NULL) {
3754                 free(data->newpath);
3755         }
3756         if (data->newdir.data.data_val != NULL) {
3757                 free(data->newdir.data.data_val);
3758         }
3759         free(data);
3760 }
3761
3762 static void nfs_link_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3763 {
3764         LINK3res *res;
3765         struct nfs_cb_data *data = private_data;
3766         struct nfs_context *nfs = data->nfs;
3767         struct nfs_link_data *link_data = data->continue_data;
3768
3769         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3770
3771         if (status == RPC_STATUS_ERROR) {
3772                 data->cb(-EFAULT, nfs, command_data, data->private_data);
3773                 free_nfs_cb_data(data);
3774                 return;
3775         }
3776         if (status == RPC_STATUS_CANCEL) {
3777                 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3778                 free_nfs_cb_data(data);
3779                 return;
3780         }
3781
3782         res = command_data;
3783         if (res->status != NFS3_OK) {
3784                 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));
3785                 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3786                 free_nfs_cb_data(data);
3787                 return;
3788         }
3789
3790         data->cb(0, nfs, NULL, data->private_data);
3791         free_nfs_cb_data(data);
3792 }
3793
3794 static int nfs_link_continue_2_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3795 {
3796         struct nfs_link_data *link_data = data->continue_data;
3797         LINK3args args;
3798
3799         /* steal the filehandle */
3800         link_data->newdir = data->fh;
3801         data->fh.data.data_val = NULL;
3802
3803         memset(&args, 0, sizeof(LINK3args));
3804         args.file = link_data->oldfh;
3805         args.link.dir = link_data->newdir;
3806         args.link.name = link_data->newobject;
3807         if (rpc_nfs3_link_async(nfs->rpc, nfs_link_cb, &args, data) != 0) {
3808                 rpc_set_error(nfs->rpc, "RPC error: Failed to send LINK call for %s", data->path);
3809                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3810                 free_nfs_cb_data(data);
3811                 return -1;
3812         }
3813         return 0;
3814 }
3815
3816
3817 static int nfs_link_continue_1_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
3818 {
3819         struct nfs_link_data *link_data = data->continue_data;
3820
3821         /* steal the filehandle */
3822         link_data->oldfh = data->fh;
3823         data->fh.data.data_val = NULL;
3824
3825         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) {
3826                 rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", link_data->newpath);
3827                 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3828                 free_nfs_cb_data(data);
3829                 return -1;
3830         }
3831         data->continue_data = NULL;
3832         free_nfs_cb_data(data);
3833
3834         return 0;
3835 }
3836
3837
3838 int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
3839 {
3840         char *ptr;
3841         struct nfs_link_data *link_data;
3842
3843         link_data = malloc(sizeof(struct nfs_link_data));
3844         if (link_data == NULL) {
3845                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for link data");
3846                 return -1;
3847         }
3848         memset(link_data, 0, sizeof(struct nfs_link_data));
3849
3850         link_data->oldpath = strdup(oldpath);
3851         if (link_data->oldpath == NULL) {
3852                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
3853                 free_nfs_link_data(link_data);
3854                 return -1;
3855         }
3856
3857         link_data->newpath = strdup(newpath);
3858         if (link_data->newpath == NULL) {
3859                 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for newpath");
3860                 free_nfs_link_data(link_data);
3861                 return -1;
3862         }
3863         ptr = strrchr(link_data->newpath, '/');
3864         if (ptr == NULL) {
3865                 rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
3866                 free_nfs_link_data(link_data);
3867                 return -1;
3868         }
3869         *ptr = 0;
3870         ptr++;
3871         link_data->newobject = ptr;
3872
3873
3874         if (nfs_lookuppath_async(nfs, link_data->oldpath, cb, private_data, nfs_link_continue_1_internal, link_data, free_nfs_link_data, 0) != 0) {
3875                 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3876                 return -1;
3877         }
3878
3879         return 0;
3880 }
3881
3882
3883 //qqq replace later with lseek()
3884 uint64_t nfs_get_current_offset(struct nfsfh *nfsfh)
3885 {
3886         return nfsfh->offset;
3887 }
3888
3889
3890
3891 /*
3892  * Get the maximum supported READ3 size by the server
3893  */
3894 uint64_t nfs_get_readmax(struct nfs_context *nfs)
3895 {
3896         return nfs->readmax;
3897 }
3898
3899 /*
3900  * Get the maximum supported WRITE3 size by the server
3901  */
3902 uint64_t nfs_get_writemax(struct nfs_context *nfs)
3903 {
3904         return nfs->writemax;
3905 }
3906
3907 void nfs_set_tcp_syncnt(struct nfs_context *nfs, int v) {
3908         rpc_set_tcp_syncnt(nfs->rpc, v);
3909 }
3910
3911 void nfs_set_uid(struct nfs_context *nfs, int uid) {
3912         rpc_set_uid(nfs->rpc, uid);
3913 }
3914
3915 void nfs_set_gid(struct nfs_context *nfs, int gid) {
3916         rpc_set_gid(nfs->rpc, gid);
3917 }
3918
3919 void nfs_set_error(struct nfs_context *nfs, char *error_string, ...)
3920 {
3921         va_list ap;
3922         char *str = NULL;
3923
3924         va_start(ap, error_string);
3925         str = malloc(1024);
3926         vsnprintf(str, 1024, error_string, ap);
3927         if (nfs->rpc->error_string != NULL) {
3928                 free(nfs->rpc->error_string);
3929         }
3930         nfs->rpc->error_string = str;
3931     va_end(ap);
3932 }
3933
3934
3935
3936 struct mount_cb_data {
3937        rpc_cb cb;
3938        void *private_data;
3939        char *server;
3940 };
3941
3942 static void free_mount_cb_data(struct mount_cb_data *data)
3943 {
3944         if (data->server != NULL) {
3945                 free(data->server);
3946                 data->server = NULL;
3947         }
3948
3949         free(data);
3950 }
3951
3952 static void mount_export_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3953 {
3954         struct mount_cb_data *data = private_data;
3955
3956         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3957
3958         if (status == RPC_STATUS_ERROR) {
3959                 data->cb(rpc, -EFAULT, command_data, data->private_data);
3960                 free_mount_cb_data(data);
3961                 return;
3962         }
3963         if (status == RPC_STATUS_CANCEL) {
3964                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
3965                 free_mount_cb_data(data);
3966                 return;
3967         }
3968
3969         data->cb(rpc, 0, command_data, data->private_data);
3970         if (rpc_disconnect(rpc, "normal disconnect") != 0) {
3971                 rpc_set_error(rpc, "Failed to disconnect\n");
3972         }
3973         free_mount_cb_data(data);
3974 }
3975
3976 static void mount_export_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3977 {
3978         struct mount_cb_data *data = private_data;
3979
3980         assert(rpc->magic == RPC_CONTEXT_MAGIC);
3981
3982         /* Dont want any more callbacks even if the socket is closed */
3983         rpc->connect_cb = NULL;
3984
3985         if (status == RPC_STATUS_ERROR) {
3986                 data->cb(rpc, -EFAULT, command_data, data->private_data);
3987                 free_mount_cb_data(data);
3988                 return;
3989         }
3990         if (status == RPC_STATUS_CANCEL) {
3991                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
3992                 free_mount_cb_data(data);
3993                 return;
3994         }
3995
3996         if (rpc_mount3_export_async(rpc, mount_export_5_cb, data) != 0) {
3997                 data->cb(rpc, -ENOMEM, command_data, data->private_data);
3998                 free_mount_cb_data(data);
3999                 return;
4000         }
4001 }
4002
4003 static void mount_export_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4004 {
4005         struct mount_cb_data *data = private_data;
4006         uint32_t mount_port;
4007
4008         assert(rpc->magic == RPC_CONTEXT_MAGIC);
4009
4010         if (status == RPC_STATUS_ERROR) {
4011                 data->cb(rpc, -EFAULT, command_data, data->private_data);
4012                 free_mount_cb_data(data);
4013                 return;
4014         }
4015         if (status == RPC_STATUS_CANCEL) {
4016                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
4017                 free_mount_cb_data(data);
4018                 return;
4019         }
4020
4021         mount_port = *(uint32_t *)command_data;
4022         if (mount_port == 0) {
4023                 rpc_set_error(rpc, "RPC error. Mount program is not available");
4024                 data->cb(rpc, -ENOENT, command_data, data->private_data);
4025                 free_mount_cb_data(data);
4026                 return;
4027         }
4028
4029         rpc_disconnect(rpc, "normal disconnect");
4030         if (rpc_connect_async(rpc, data->server, mount_port, mount_export_4_cb, data) != 0) {
4031                 data->cb(rpc, -ENOMEM, command_data, data->private_data);
4032                 free_mount_cb_data(data);
4033                 return;
4034         }
4035 }
4036
4037 static void mount_export_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4038 {
4039         struct mount_cb_data *data = private_data;
4040
4041         assert(rpc->magic == RPC_CONTEXT_MAGIC);
4042
4043         if (status == RPC_STATUS_ERROR) {
4044                 data->cb(rpc, -EFAULT, command_data, data->private_data);
4045                 free_mount_cb_data(data);
4046                 return;
4047         }
4048         if (status == RPC_STATUS_CANCEL) {
4049                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
4050                 free_mount_cb_data(data);
4051                 return;
4052         }
4053
4054         if (rpc_pmap_getport_async(rpc, MOUNT_PROGRAM, MOUNT_V3, IPPROTO_TCP, mount_export_3_cb, private_data) != 0) {
4055                 data->cb(rpc, -ENOMEM, command_data, data->private_data);
4056                 free_mount_cb_data(data);
4057                 return;
4058         }
4059 }
4060
4061 static void mount_export_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4062 {
4063         struct mount_cb_data *data = private_data;
4064
4065         assert(rpc->magic == RPC_CONTEXT_MAGIC);
4066
4067         /* Dont want any more callbacks even if the socket is closed */
4068         rpc->connect_cb = NULL;
4069
4070         if (status == RPC_STATUS_ERROR) {
4071                 data->cb(rpc, -EFAULT, command_data, data->private_data);
4072                 free_mount_cb_data(data);
4073                 return;
4074         }
4075         if (status == RPC_STATUS_CANCEL) {
4076                 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
4077                 free_mount_cb_data(data);
4078                 return;
4079         }
4080
4081         if (rpc_pmap_null_async(rpc, mount_export_2_cb, data) != 0) {
4082                 data->cb(rpc, -ENOMEM, command_data, data->private_data);
4083                 free_mount_cb_data(data);
4084                 return;
4085         }
4086 }
4087
4088 int mount_getexports_async(struct rpc_context *rpc, const char *server, rpc_cb cb, void *private_data)
4089 {
4090         struct mount_cb_data *data;
4091
4092         assert(rpc->magic == RPC_CONTEXT_MAGIC);
4093
4094         data = malloc(sizeof(struct mount_cb_data));
4095         if (data == NULL) {
4096                 return -1;
4097         }
4098         memset(data, 0, sizeof(struct mount_cb_data));
4099         data->cb           = cb;
4100         data->private_data = private_data;
4101         data->server       = strdup(server);
4102         if (data->server == NULL) {
4103                 free_mount_cb_data(data);
4104                 return -1;
4105         }
4106         if (rpc_connect_async(rpc, data->server, 111, mount_export_1_cb, data) != 0) {
4107                 free_mount_cb_data(data);
4108                 return -1;
4109         }
4110
4111         return 0;
4112 }
4113
4114 struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs)
4115 {
4116         assert(nfs->rpc->magic == RPC_CONTEXT_MAGIC);
4117         return nfs->rpc;
4118 }
4119
4120 const char *nfs_get_server(struct nfs_context *nfs) {
4121         return nfs->server;
4122 }
4123
4124 const char *nfs_get_export(struct nfs_context *nfs) {
4125         return nfs->export;
4126 }
4127
4128 const struct nfs_fh3 *nfs_get_rootfh(struct nfs_context *nfs) {
4129       return &nfs->rootfh;
4130 }
4131
4132 struct nfs_fh3 *nfs_get_fh(struct nfsfh *nfsfh) {
4133        return &nfsfh->fh;
4134 }